1 /* Utility and Unix shadow routines for GNU Emacs on the Microsoft Windows API.
3 Copyright (C) 1994-1995, 2000-2015 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
21 Geoff Voelker (voelker@cs.washington.edu) 7-29-94
24 #include <mingw_time.h>
25 #include <stddef.h> /* for offsetof */
28 #include <float.h> /* for DBL_EPSILON */
35 #include <time.h> /* must be before nt/inc/sys/time.h, for MinGW64 */
37 #include <sys/utime.h>
40 /* must include CRT headers *before* config.h */
43 #include <mbstring.h> /* for _mbspbrk, _mbslwr, _mbsrchr, ... */
70 #include "epaths.h" /* for SHELL */
75 /* MinGW64 defines these in its _mingw.h. */
76 #ifndef _ANONYMOUS_UNION
77 # define _ANONYMOUS_UNION
79 #ifndef _ANONYMOUS_STRUCT
80 # define _ANONYMOUS_STRUCT
83 /* Some versions of compiler define MEMORYSTATUSEX, some don't, so we
84 use a different name to avoid compilation problems. */
85 typedef struct _MEMORY_STATUS_EX
{
88 DWORDLONG ullTotalPhys
;
89 DWORDLONG ullAvailPhys
;
90 DWORDLONG ullTotalPageFile
;
91 DWORDLONG ullAvailPageFile
;
92 DWORDLONG ullTotalVirtual
;
93 DWORDLONG ullAvailVirtual
;
94 DWORDLONG ullAvailExtendedVirtual
;
95 } MEMORY_STATUS_EX
,*LPMEMORY_STATUS_EX
;
97 /* These are here so that GDB would know about these data types. This
98 allows to attach GDB to Emacs when a fatal exception is triggered
99 and Windows pops up the "application needs to be closed" dialog.
100 At that point, _gnu_exception_handler, the top-level exception
101 handler installed by the MinGW startup code, is somewhere on the
102 call-stack of the main thread, so going to that call frame and
103 looking at the argument to _gnu_exception_handler, which is a
104 PEXCEPTION_POINTERS pointer, can reveal the exception code
105 (excptr->ExceptionRecord->ExceptionCode) and the address where the
106 exception happened (excptr->ExceptionRecord->ExceptionAddress), as
107 well as some additional information specific to the exception. */
108 PEXCEPTION_POINTERS excptr
;
109 PEXCEPTION_RECORD excprec
;
115 #include <tlhelp32.h>
120 #if _WIN32_WINNT < 0x0500
121 #if !defined (__MINGW32__) || __W32API_MAJOR_VERSION < 3 || (__W32API_MAJOR_VERSION == 3 && __W32API_MINOR_VERSION < 15)
122 /* This either is not in psapi.h or guarded by higher value of
123 _WIN32_WINNT than what we use. w32api supplied with MinGW 3.15
124 defines it in psapi.h */
125 typedef struct _PROCESS_MEMORY_COUNTERS_EX
{
127 DWORD PageFaultCount
;
128 SIZE_T PeakWorkingSetSize
;
129 SIZE_T WorkingSetSize
;
130 SIZE_T QuotaPeakPagedPoolUsage
;
131 SIZE_T QuotaPagedPoolUsage
;
132 SIZE_T QuotaPeakNonPagedPoolUsage
;
133 SIZE_T QuotaNonPagedPoolUsage
;
134 SIZE_T PagefileUsage
;
135 SIZE_T PeakPagefileUsage
;
137 } PROCESS_MEMORY_COUNTERS_EX
,*PPROCESS_MEMORY_COUNTERS_EX
;
141 #include <winioctl.h>
148 /* This is not in MinGW's sddl.h (but they are in MSVC headers), so we
149 define them by hand if not already defined. */
150 #ifndef SDDL_REVISION_1
151 #define SDDL_REVISION_1 1
152 #endif /* SDDL_REVISION_1 */
154 #if defined(_MSC_VER) || defined(MINGW_W64)
155 /* MSVC and MinGW64 don't provide the definition of
156 REPARSE_DATA_BUFFER and the associated macros, except on ntifs.h,
157 which cannot be included because it triggers conflicts with other
158 Windows API headers. So we define it here by hand. */
160 typedef struct _REPARSE_DATA_BUFFER
{
162 USHORT ReparseDataLength
;
166 USHORT SubstituteNameOffset
;
167 USHORT SubstituteNameLength
;
168 USHORT PrintNameOffset
;
169 USHORT PrintNameLength
;
172 } SymbolicLinkReparseBuffer
;
174 USHORT SubstituteNameOffset
;
175 USHORT SubstituteNameLength
;
176 USHORT PrintNameOffset
;
177 USHORT PrintNameLength
;
179 } MountPointReparseBuffer
;
182 } GenericReparseBuffer
;
184 } REPARSE_DATA_BUFFER
, *PREPARSE_DATA_BUFFER
;
186 #ifndef FILE_DEVICE_FILE_SYSTEM
187 #define FILE_DEVICE_FILE_SYSTEM 9
189 #ifndef METHOD_BUFFERED
190 #define METHOD_BUFFERED 0
192 #ifndef FILE_ANY_ACCESS
193 #define FILE_ANY_ACCESS 0x00000000
196 #define CTL_CODE(t,f,m,a) (((t)<<16)|((a)<<14)|((f)<<2)|(m))
198 /* MinGW64 defines FSCTL_GET_REPARSE_POINT on winioctl.h. */
199 #ifndef FSCTL_GET_REPARSE_POINT
200 #define FSCTL_GET_REPARSE_POINT \
201 CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 42, METHOD_BUFFERED, FILE_ANY_ACCESS)
205 /* TCP connection support. */
206 #include <sys/socket.h>
225 #include <iphlpapi.h> /* should be after winsock2.h */
229 #include "w32common.h"
231 #include "w32select.h"
233 #include "dispextern.h" /* for xstrcasecmp */
234 #include "coding.h" /* for Vlocale_coding_system */
236 #include "careadlinkat.h"
237 #include "allocator.h"
239 /* For serial_configure and serial_open. */
242 typedef HRESULT (WINAPI
* ShGetFolderPath_fn
)
243 (IN HWND
, IN
int, IN HANDLE
, IN DWORD
, OUT
char *);
245 void globals_of_w32 (void);
246 static DWORD
get_rid (PSID
);
247 static int is_symlink (const char *);
248 static char * chase_symlinks (const char *);
249 static int enable_privilege (LPCTSTR
, BOOL
, TOKEN_PRIVILEGES
*);
250 static int restore_privilege (TOKEN_PRIVILEGES
*);
251 static BOOL WINAPI
revert_to_self (void);
253 static int sys_access (const char *, int);
254 extern void *e_malloc (size_t);
255 extern int sys_select (int, SELECT_TYPE
*, SELECT_TYPE
*, SELECT_TYPE
*,
256 struct timespec
*, void *);
257 extern int sys_dup (int);
262 /* Initialization states.
264 WARNING: If you add any more such variables for additional APIs,
265 you MUST add initialization for them to globals_of_w32
266 below. This is because these variables might get set
267 to non-NULL values during dumping, but the dumped Emacs
268 cannot reuse those values, because it could be run on a
269 different version of the OS, where API addresses are
271 static BOOL g_b_init_is_windows_9x
;
272 static BOOL g_b_init_open_process_token
;
273 static BOOL g_b_init_get_token_information
;
274 static BOOL g_b_init_lookup_account_sid
;
275 static BOOL g_b_init_get_sid_sub_authority
;
276 static BOOL g_b_init_get_sid_sub_authority_count
;
277 static BOOL g_b_init_get_security_info
;
278 static BOOL g_b_init_get_file_security_w
;
279 static BOOL g_b_init_get_file_security_a
;
280 static BOOL g_b_init_get_security_descriptor_owner
;
281 static BOOL g_b_init_get_security_descriptor_group
;
282 static BOOL g_b_init_is_valid_sid
;
283 static BOOL g_b_init_create_toolhelp32_snapshot
;
284 static BOOL g_b_init_process32_first
;
285 static BOOL g_b_init_process32_next
;
286 static BOOL g_b_init_open_thread_token
;
287 static BOOL g_b_init_impersonate_self
;
288 static BOOL g_b_init_revert_to_self
;
289 static BOOL g_b_init_get_process_memory_info
;
290 static BOOL g_b_init_get_process_working_set_size
;
291 static BOOL g_b_init_global_memory_status
;
292 static BOOL g_b_init_global_memory_status_ex
;
293 static BOOL g_b_init_get_length_sid
;
294 static BOOL g_b_init_equal_sid
;
295 static BOOL g_b_init_copy_sid
;
296 static BOOL g_b_init_get_native_system_info
;
297 static BOOL g_b_init_get_system_times
;
298 static BOOL g_b_init_create_symbolic_link_w
;
299 static BOOL g_b_init_create_symbolic_link_a
;
300 static BOOL g_b_init_get_security_descriptor_dacl
;
301 static BOOL g_b_init_convert_sd_to_sddl
;
302 static BOOL g_b_init_convert_sddl_to_sd
;
303 static BOOL g_b_init_is_valid_security_descriptor
;
304 static BOOL g_b_init_set_file_security_w
;
305 static BOOL g_b_init_set_file_security_a
;
306 static BOOL g_b_init_set_named_security_info_w
;
307 static BOOL g_b_init_set_named_security_info_a
;
308 static BOOL g_b_init_get_adapters_info
;
310 BOOL g_b_init_compare_string_w
;
313 BEGIN: Wrapper functions around OpenProcessToken
314 and other functions in advapi32.dll that are only
315 supported in Windows NT / 2k / XP
317 /* ** Function pointer typedefs ** */
318 typedef BOOL (WINAPI
* OpenProcessToken_Proc
) (
319 HANDLE ProcessHandle
,
321 PHANDLE TokenHandle
);
322 typedef BOOL (WINAPI
* GetTokenInformation_Proc
) (
324 TOKEN_INFORMATION_CLASS TokenInformationClass
,
325 LPVOID TokenInformation
,
326 DWORD TokenInformationLength
,
327 PDWORD ReturnLength
);
328 typedef BOOL (WINAPI
* GetProcessTimes_Proc
) (
329 HANDLE process_handle
,
330 LPFILETIME creation_time
,
331 LPFILETIME exit_time
,
332 LPFILETIME kernel_time
,
333 LPFILETIME user_time
);
335 GetProcessTimes_Proc get_process_times_fn
= NULL
;
338 const char * const LookupAccountSid_Name
= "LookupAccountSidW";
340 const char * const LookupAccountSid_Name
= "LookupAccountSidA";
342 typedef BOOL (WINAPI
* LookupAccountSid_Proc
) (
343 LPCTSTR lpSystemName
,
348 LPDWORD cbDomainName
,
349 PSID_NAME_USE peUse
);
350 typedef PDWORD (WINAPI
* GetSidSubAuthority_Proc
) (
353 typedef PUCHAR (WINAPI
* GetSidSubAuthorityCount_Proc
) (
355 typedef DWORD (WINAPI
* GetSecurityInfo_Proc
) (
357 SE_OBJECT_TYPE ObjectType
,
358 SECURITY_INFORMATION SecurityInfo
,
363 PSECURITY_DESCRIPTOR
*ppSecurityDescriptor
);
364 typedef BOOL (WINAPI
* GetFileSecurityW_Proc
) (
366 SECURITY_INFORMATION RequestedInformation
,
367 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
369 LPDWORD lpnLengthNeeded
);
370 typedef BOOL (WINAPI
* GetFileSecurityA_Proc
) (
372 SECURITY_INFORMATION RequestedInformation
,
373 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
375 LPDWORD lpnLengthNeeded
);
376 typedef BOOL (WINAPI
*SetFileSecurityW_Proc
) (
378 SECURITY_INFORMATION SecurityInformation
,
379 PSECURITY_DESCRIPTOR pSecurityDescriptor
);
380 typedef BOOL (WINAPI
*SetFileSecurityA_Proc
) (
382 SECURITY_INFORMATION SecurityInformation
,
383 PSECURITY_DESCRIPTOR pSecurityDescriptor
);
384 typedef DWORD (WINAPI
*SetNamedSecurityInfoW_Proc
) (
385 LPCWSTR lpObjectName
,
386 SE_OBJECT_TYPE ObjectType
,
387 SECURITY_INFORMATION SecurityInformation
,
392 typedef DWORD (WINAPI
*SetNamedSecurityInfoA_Proc
) (
394 SE_OBJECT_TYPE ObjectType
,
395 SECURITY_INFORMATION SecurityInformation
,
400 typedef BOOL (WINAPI
* GetSecurityDescriptorOwner_Proc
) (
401 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
403 LPBOOL lpbOwnerDefaulted
);
404 typedef BOOL (WINAPI
* GetSecurityDescriptorGroup_Proc
) (
405 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
407 LPBOOL lpbGroupDefaulted
);
408 typedef BOOL (WINAPI
*GetSecurityDescriptorDacl_Proc
) (
409 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
410 LPBOOL lpbDaclPresent
,
412 LPBOOL lpbDaclDefaulted
);
413 typedef BOOL (WINAPI
* IsValidSid_Proc
) (
415 typedef HANDLE (WINAPI
* CreateToolhelp32Snapshot_Proc
) (
417 DWORD th32ProcessID
);
418 typedef BOOL (WINAPI
* Process32First_Proc
) (
420 LPPROCESSENTRY32 lppe
);
421 typedef BOOL (WINAPI
* Process32Next_Proc
) (
423 LPPROCESSENTRY32 lppe
);
424 typedef BOOL (WINAPI
* OpenThreadToken_Proc
) (
428 PHANDLE TokenHandle
);
429 typedef BOOL (WINAPI
* ImpersonateSelf_Proc
) (
430 SECURITY_IMPERSONATION_LEVEL ImpersonationLevel
);
431 typedef BOOL (WINAPI
* RevertToSelf_Proc
) (void);
432 typedef BOOL (WINAPI
* GetProcessMemoryInfo_Proc
) (
434 PPROCESS_MEMORY_COUNTERS ppsmemCounters
,
436 typedef BOOL (WINAPI
* GetProcessWorkingSetSize_Proc
) (
438 PSIZE_T lpMinimumWorkingSetSize
,
439 PSIZE_T lpMaximumWorkingSetSize
);
440 typedef BOOL (WINAPI
* GlobalMemoryStatus_Proc
) (
441 LPMEMORYSTATUS lpBuffer
);
442 typedef BOOL (WINAPI
* GlobalMemoryStatusEx_Proc
) (
443 LPMEMORY_STATUS_EX lpBuffer
);
444 typedef BOOL (WINAPI
* CopySid_Proc
) (
445 DWORD nDestinationSidLength
,
446 PSID pDestinationSid
,
448 typedef BOOL (WINAPI
* EqualSid_Proc
) (
451 typedef DWORD (WINAPI
* GetLengthSid_Proc
) (
453 typedef void (WINAPI
* GetNativeSystemInfo_Proc
) (
454 LPSYSTEM_INFO lpSystemInfo
);
455 typedef BOOL (WINAPI
* GetSystemTimes_Proc
) (
456 LPFILETIME lpIdleTime
,
457 LPFILETIME lpKernelTime
,
458 LPFILETIME lpUserTime
);
459 typedef BOOLEAN (WINAPI
*CreateSymbolicLinkW_Proc
) (
460 LPCWSTR lpSymlinkFileName
,
461 LPCWSTR lpTargetFileName
,
463 typedef BOOLEAN (WINAPI
*CreateSymbolicLinkA_Proc
) (
464 LPCSTR lpSymlinkFileName
,
465 LPCSTR lpTargetFileName
,
467 typedef BOOL (WINAPI
*ConvertStringSecurityDescriptorToSecurityDescriptor_Proc
) (
468 LPCTSTR StringSecurityDescriptor
,
469 DWORD StringSDRevision
,
470 PSECURITY_DESCRIPTOR
*SecurityDescriptor
,
471 PULONG SecurityDescriptorSize
);
472 typedef BOOL (WINAPI
*ConvertSecurityDescriptorToStringSecurityDescriptor_Proc
) (
473 PSECURITY_DESCRIPTOR SecurityDescriptor
,
474 DWORD RequestedStringSDRevision
,
475 SECURITY_INFORMATION SecurityInformation
,
476 LPTSTR
*StringSecurityDescriptor
,
477 PULONG StringSecurityDescriptorLen
);
478 typedef BOOL (WINAPI
*IsValidSecurityDescriptor_Proc
) (PSECURITY_DESCRIPTOR
);
479 typedef DWORD (WINAPI
*GetAdaptersInfo_Proc
) (
480 PIP_ADAPTER_INFO pAdapterInfo
,
483 int (WINAPI
*pMultiByteToWideChar
)(UINT
,DWORD
,LPCSTR
,int,LPWSTR
,int);
484 int (WINAPI
*pWideCharToMultiByte
)(UINT
,DWORD
,LPCWSTR
,int,LPSTR
,int,LPCSTR
,LPBOOL
);
486 /* ** A utility function ** */
490 static BOOL s_b_ret
= 0;
491 OSVERSIONINFO os_ver
;
492 if (g_b_init_is_windows_9x
== 0)
494 g_b_init_is_windows_9x
= 1;
495 ZeroMemory (&os_ver
, sizeof (OSVERSIONINFO
));
496 os_ver
.dwOSVersionInfoSize
= sizeof (OSVERSIONINFO
);
497 if (GetVersionEx (&os_ver
))
499 s_b_ret
= (os_ver
.dwPlatformId
== VER_PLATFORM_WIN32_WINDOWS
);
505 static Lisp_Object
ltime (ULONGLONG
);
507 /* Get total user and system times for get-internal-run-time.
508 Returns a list of integers if the times are provided by the OS
509 (NT derivatives), otherwise it returns the result of current-time. */
511 w32_get_internal_run_time (void)
513 if (get_process_times_fn
)
515 FILETIME create
, exit
, kernel
, user
;
516 HANDLE proc
= GetCurrentProcess ();
517 if ((*get_process_times_fn
) (proc
, &create
, &exit
, &kernel
, &user
))
519 LARGE_INTEGER user_int
, kernel_int
, total
;
520 user_int
.LowPart
= user
.dwLowDateTime
;
521 user_int
.HighPart
= user
.dwHighDateTime
;
522 kernel_int
.LowPart
= kernel
.dwLowDateTime
;
523 kernel_int
.HighPart
= kernel
.dwHighDateTime
;
524 total
.QuadPart
= user_int
.QuadPart
+ kernel_int
.QuadPart
;
525 return ltime (total
.QuadPart
);
529 return Fcurrent_time ();
532 /* ** The wrapper functions ** */
535 open_process_token (HANDLE ProcessHandle
,
539 static OpenProcessToken_Proc s_pfn_Open_Process_Token
= NULL
;
540 HMODULE hm_advapi32
= NULL
;
541 if (is_windows_9x () == TRUE
)
545 if (g_b_init_open_process_token
== 0)
547 g_b_init_open_process_token
= 1;
548 hm_advapi32
= LoadLibrary ("Advapi32.dll");
549 s_pfn_Open_Process_Token
=
550 (OpenProcessToken_Proc
) GetProcAddress (hm_advapi32
, "OpenProcessToken");
552 if (s_pfn_Open_Process_Token
== NULL
)
557 s_pfn_Open_Process_Token (
565 get_token_information (HANDLE TokenHandle
,
566 TOKEN_INFORMATION_CLASS TokenInformationClass
,
567 LPVOID TokenInformation
,
568 DWORD TokenInformationLength
,
571 static GetTokenInformation_Proc s_pfn_Get_Token_Information
= NULL
;
572 HMODULE hm_advapi32
= NULL
;
573 if (is_windows_9x () == TRUE
)
577 if (g_b_init_get_token_information
== 0)
579 g_b_init_get_token_information
= 1;
580 hm_advapi32
= LoadLibrary ("Advapi32.dll");
581 s_pfn_Get_Token_Information
=
582 (GetTokenInformation_Proc
) GetProcAddress (hm_advapi32
, "GetTokenInformation");
584 if (s_pfn_Get_Token_Information
== NULL
)
589 s_pfn_Get_Token_Information (
591 TokenInformationClass
,
593 TokenInformationLength
,
599 lookup_account_sid (LPCTSTR lpSystemName
,
604 LPDWORD cbDomainName
,
607 static LookupAccountSid_Proc s_pfn_Lookup_Account_Sid
= NULL
;
608 HMODULE hm_advapi32
= NULL
;
609 if (is_windows_9x () == TRUE
)
613 if (g_b_init_lookup_account_sid
== 0)
615 g_b_init_lookup_account_sid
= 1;
616 hm_advapi32
= LoadLibrary ("Advapi32.dll");
617 s_pfn_Lookup_Account_Sid
=
618 (LookupAccountSid_Proc
) GetProcAddress (hm_advapi32
, LookupAccountSid_Name
);
620 if (s_pfn_Lookup_Account_Sid
== NULL
)
625 s_pfn_Lookup_Account_Sid (
637 get_sid_sub_authority (PSID pSid
, DWORD n
)
639 static GetSidSubAuthority_Proc s_pfn_Get_Sid_Sub_Authority
= NULL
;
640 static DWORD zero
= 0U;
641 HMODULE hm_advapi32
= NULL
;
642 if (is_windows_9x () == TRUE
)
646 if (g_b_init_get_sid_sub_authority
== 0)
648 g_b_init_get_sid_sub_authority
= 1;
649 hm_advapi32
= LoadLibrary ("Advapi32.dll");
650 s_pfn_Get_Sid_Sub_Authority
=
651 (GetSidSubAuthority_Proc
) GetProcAddress (
652 hm_advapi32
, "GetSidSubAuthority");
654 if (s_pfn_Get_Sid_Sub_Authority
== NULL
)
658 return (s_pfn_Get_Sid_Sub_Authority (pSid
, n
));
662 get_sid_sub_authority_count (PSID pSid
)
664 static GetSidSubAuthorityCount_Proc s_pfn_Get_Sid_Sub_Authority_Count
= NULL
;
665 static UCHAR zero
= 0U;
666 HMODULE hm_advapi32
= NULL
;
667 if (is_windows_9x () == TRUE
)
671 if (g_b_init_get_sid_sub_authority_count
== 0)
673 g_b_init_get_sid_sub_authority_count
= 1;
674 hm_advapi32
= LoadLibrary ("Advapi32.dll");
675 s_pfn_Get_Sid_Sub_Authority_Count
=
676 (GetSidSubAuthorityCount_Proc
) GetProcAddress (
677 hm_advapi32
, "GetSidSubAuthorityCount");
679 if (s_pfn_Get_Sid_Sub_Authority_Count
== NULL
)
683 return (s_pfn_Get_Sid_Sub_Authority_Count (pSid
));
687 get_security_info (HANDLE handle
,
688 SE_OBJECT_TYPE ObjectType
,
689 SECURITY_INFORMATION SecurityInfo
,
694 PSECURITY_DESCRIPTOR
*ppSecurityDescriptor
)
696 static GetSecurityInfo_Proc s_pfn_Get_Security_Info
= NULL
;
697 HMODULE hm_advapi32
= NULL
;
698 if (is_windows_9x () == TRUE
)
702 if (g_b_init_get_security_info
== 0)
704 g_b_init_get_security_info
= 1;
705 hm_advapi32
= LoadLibrary ("Advapi32.dll");
706 s_pfn_Get_Security_Info
=
707 (GetSecurityInfo_Proc
) GetProcAddress (
708 hm_advapi32
, "GetSecurityInfo");
710 if (s_pfn_Get_Security_Info
== NULL
)
714 return (s_pfn_Get_Security_Info (handle
, ObjectType
, SecurityInfo
,
715 ppsidOwner
, ppsidGroup
, ppDacl
, ppSacl
,
716 ppSecurityDescriptor
));
720 get_file_security (const char *lpFileName
,
721 SECURITY_INFORMATION RequestedInformation
,
722 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
724 LPDWORD lpnLengthNeeded
)
726 static GetFileSecurityA_Proc s_pfn_Get_File_SecurityA
= NULL
;
727 static GetFileSecurityW_Proc s_pfn_Get_File_SecurityW
= NULL
;
728 HMODULE hm_advapi32
= NULL
;
729 if (is_windows_9x () == TRUE
)
734 if (w32_unicode_filenames
)
736 wchar_t filename_w
[MAX_PATH
];
738 if (g_b_init_get_file_security_w
== 0)
740 g_b_init_get_file_security_w
= 1;
741 hm_advapi32
= LoadLibrary ("Advapi32.dll");
742 s_pfn_Get_File_SecurityW
=
743 (GetFileSecurityW_Proc
) GetProcAddress (hm_advapi32
,
746 if (s_pfn_Get_File_SecurityW
== NULL
)
751 filename_to_utf16 (lpFileName
, filename_w
);
752 return (s_pfn_Get_File_SecurityW (filename_w
, RequestedInformation
,
753 pSecurityDescriptor
, nLength
,
758 char filename_a
[MAX_PATH
];
760 if (g_b_init_get_file_security_a
== 0)
762 g_b_init_get_file_security_a
= 1;
763 hm_advapi32
= LoadLibrary ("Advapi32.dll");
764 s_pfn_Get_File_SecurityA
=
765 (GetFileSecurityA_Proc
) GetProcAddress (hm_advapi32
,
768 if (s_pfn_Get_File_SecurityA
== NULL
)
773 filename_to_ansi (lpFileName
, filename_a
);
774 return (s_pfn_Get_File_SecurityA (filename_a
, RequestedInformation
,
775 pSecurityDescriptor
, nLength
,
781 set_file_security (const char *lpFileName
,
782 SECURITY_INFORMATION SecurityInformation
,
783 PSECURITY_DESCRIPTOR pSecurityDescriptor
)
785 static SetFileSecurityW_Proc s_pfn_Set_File_SecurityW
= NULL
;
786 static SetFileSecurityA_Proc s_pfn_Set_File_SecurityA
= NULL
;
787 HMODULE hm_advapi32
= NULL
;
788 if (is_windows_9x () == TRUE
)
793 if (w32_unicode_filenames
)
795 wchar_t filename_w
[MAX_PATH
];
797 if (g_b_init_set_file_security_w
== 0)
799 g_b_init_set_file_security_w
= 1;
800 hm_advapi32
= LoadLibrary ("Advapi32.dll");
801 s_pfn_Set_File_SecurityW
=
802 (SetFileSecurityW_Proc
) GetProcAddress (hm_advapi32
,
805 if (s_pfn_Set_File_SecurityW
== NULL
)
810 filename_to_utf16 (lpFileName
, filename_w
);
811 return (s_pfn_Set_File_SecurityW (filename_w
, SecurityInformation
,
812 pSecurityDescriptor
));
816 char filename_a
[MAX_PATH
];
818 if (g_b_init_set_file_security_a
== 0)
820 g_b_init_set_file_security_a
= 1;
821 hm_advapi32
= LoadLibrary ("Advapi32.dll");
822 s_pfn_Set_File_SecurityA
=
823 (SetFileSecurityA_Proc
) GetProcAddress (hm_advapi32
,
826 if (s_pfn_Set_File_SecurityA
== NULL
)
831 filename_to_ansi (lpFileName
, filename_a
);
832 return (s_pfn_Set_File_SecurityA (filename_a
, SecurityInformation
,
833 pSecurityDescriptor
));
838 set_named_security_info (LPCTSTR lpObjectName
,
839 SE_OBJECT_TYPE ObjectType
,
840 SECURITY_INFORMATION SecurityInformation
,
846 static SetNamedSecurityInfoW_Proc s_pfn_Set_Named_Security_InfoW
= NULL
;
847 static SetNamedSecurityInfoA_Proc s_pfn_Set_Named_Security_InfoA
= NULL
;
848 HMODULE hm_advapi32
= NULL
;
849 if (is_windows_9x () == TRUE
)
854 if (w32_unicode_filenames
)
856 wchar_t filename_w
[MAX_PATH
];
858 if (g_b_init_set_named_security_info_w
== 0)
860 g_b_init_set_named_security_info_w
= 1;
861 hm_advapi32
= LoadLibrary ("Advapi32.dll");
862 s_pfn_Set_Named_Security_InfoW
=
863 (SetNamedSecurityInfoW_Proc
) GetProcAddress (hm_advapi32
,
864 "SetNamedSecurityInfoW");
866 if (s_pfn_Set_Named_Security_InfoW
== NULL
)
871 filename_to_utf16 (lpObjectName
, filename_w
);
872 return (s_pfn_Set_Named_Security_InfoW (filename_w
, ObjectType
,
873 SecurityInformation
, psidOwner
,
874 psidGroup
, pDacl
, pSacl
));
878 char filename_a
[MAX_PATH
];
880 if (g_b_init_set_named_security_info_a
== 0)
882 g_b_init_set_named_security_info_a
= 1;
883 hm_advapi32
= LoadLibrary ("Advapi32.dll");
884 s_pfn_Set_Named_Security_InfoA
=
885 (SetNamedSecurityInfoA_Proc
) GetProcAddress (hm_advapi32
,
886 "SetNamedSecurityInfoA");
888 if (s_pfn_Set_Named_Security_InfoA
== NULL
)
893 filename_to_ansi (lpObjectName
, filename_a
);
894 return (s_pfn_Set_Named_Security_InfoA (filename_a
, ObjectType
,
895 SecurityInformation
, psidOwner
,
896 psidGroup
, pDacl
, pSacl
));
901 get_security_descriptor_owner (PSECURITY_DESCRIPTOR pSecurityDescriptor
,
903 LPBOOL lpbOwnerDefaulted
)
905 static GetSecurityDescriptorOwner_Proc s_pfn_Get_Security_Descriptor_Owner
= NULL
;
906 HMODULE hm_advapi32
= NULL
;
907 if (is_windows_9x () == TRUE
)
912 if (g_b_init_get_security_descriptor_owner
== 0)
914 g_b_init_get_security_descriptor_owner
= 1;
915 hm_advapi32
= LoadLibrary ("Advapi32.dll");
916 s_pfn_Get_Security_Descriptor_Owner
=
917 (GetSecurityDescriptorOwner_Proc
) GetProcAddress (
918 hm_advapi32
, "GetSecurityDescriptorOwner");
920 if (s_pfn_Get_Security_Descriptor_Owner
== NULL
)
925 return (s_pfn_Get_Security_Descriptor_Owner (pSecurityDescriptor
, pOwner
,
930 get_security_descriptor_group (PSECURITY_DESCRIPTOR pSecurityDescriptor
,
932 LPBOOL lpbGroupDefaulted
)
934 static GetSecurityDescriptorGroup_Proc s_pfn_Get_Security_Descriptor_Group
= NULL
;
935 HMODULE hm_advapi32
= NULL
;
936 if (is_windows_9x () == TRUE
)
941 if (g_b_init_get_security_descriptor_group
== 0)
943 g_b_init_get_security_descriptor_group
= 1;
944 hm_advapi32
= LoadLibrary ("Advapi32.dll");
945 s_pfn_Get_Security_Descriptor_Group
=
946 (GetSecurityDescriptorGroup_Proc
) GetProcAddress (
947 hm_advapi32
, "GetSecurityDescriptorGroup");
949 if (s_pfn_Get_Security_Descriptor_Group
== NULL
)
954 return (s_pfn_Get_Security_Descriptor_Group (pSecurityDescriptor
, pGroup
,
959 get_security_descriptor_dacl (PSECURITY_DESCRIPTOR pSecurityDescriptor
,
960 LPBOOL lpbDaclPresent
,
962 LPBOOL lpbDaclDefaulted
)
964 static GetSecurityDescriptorDacl_Proc s_pfn_Get_Security_Descriptor_Dacl
= NULL
;
965 HMODULE hm_advapi32
= NULL
;
966 if (is_windows_9x () == TRUE
)
971 if (g_b_init_get_security_descriptor_dacl
== 0)
973 g_b_init_get_security_descriptor_dacl
= 1;
974 hm_advapi32
= LoadLibrary ("Advapi32.dll");
975 s_pfn_Get_Security_Descriptor_Dacl
=
976 (GetSecurityDescriptorDacl_Proc
) GetProcAddress (
977 hm_advapi32
, "GetSecurityDescriptorDacl");
979 if (s_pfn_Get_Security_Descriptor_Dacl
== NULL
)
984 return (s_pfn_Get_Security_Descriptor_Dacl (pSecurityDescriptor
,
985 lpbDaclPresent
, pDacl
,
990 is_valid_sid (PSID sid
)
992 static IsValidSid_Proc s_pfn_Is_Valid_Sid
= NULL
;
993 HMODULE hm_advapi32
= NULL
;
994 if (is_windows_9x () == TRUE
)
998 if (g_b_init_is_valid_sid
== 0)
1000 g_b_init_is_valid_sid
= 1;
1001 hm_advapi32
= LoadLibrary ("Advapi32.dll");
1002 s_pfn_Is_Valid_Sid
=
1003 (IsValidSid_Proc
) GetProcAddress (
1004 hm_advapi32
, "IsValidSid");
1006 if (s_pfn_Is_Valid_Sid
== NULL
)
1010 return (s_pfn_Is_Valid_Sid (sid
));
1014 equal_sid (PSID sid1
, PSID sid2
)
1016 static EqualSid_Proc s_pfn_Equal_Sid
= NULL
;
1017 HMODULE hm_advapi32
= NULL
;
1018 if (is_windows_9x () == TRUE
)
1022 if (g_b_init_equal_sid
== 0)
1024 g_b_init_equal_sid
= 1;
1025 hm_advapi32
= LoadLibrary ("Advapi32.dll");
1027 (EqualSid_Proc
) GetProcAddress (
1028 hm_advapi32
, "EqualSid");
1030 if (s_pfn_Equal_Sid
== NULL
)
1034 return (s_pfn_Equal_Sid (sid1
, sid2
));
1038 get_length_sid (PSID sid
)
1040 static GetLengthSid_Proc s_pfn_Get_Length_Sid
= NULL
;
1041 HMODULE hm_advapi32
= NULL
;
1042 if (is_windows_9x () == TRUE
)
1046 if (g_b_init_get_length_sid
== 0)
1048 g_b_init_get_length_sid
= 1;
1049 hm_advapi32
= LoadLibrary ("Advapi32.dll");
1050 s_pfn_Get_Length_Sid
=
1051 (GetLengthSid_Proc
) GetProcAddress (
1052 hm_advapi32
, "GetLengthSid");
1054 if (s_pfn_Get_Length_Sid
== NULL
)
1058 return (s_pfn_Get_Length_Sid (sid
));
1062 copy_sid (DWORD destlen
, PSID dest
, PSID src
)
1064 static CopySid_Proc s_pfn_Copy_Sid
= NULL
;
1065 HMODULE hm_advapi32
= NULL
;
1066 if (is_windows_9x () == TRUE
)
1070 if (g_b_init_copy_sid
== 0)
1072 g_b_init_copy_sid
= 1;
1073 hm_advapi32
= LoadLibrary ("Advapi32.dll");
1075 (CopySid_Proc
) GetProcAddress (
1076 hm_advapi32
, "CopySid");
1078 if (s_pfn_Copy_Sid
== NULL
)
1082 return (s_pfn_Copy_Sid (destlen
, dest
, src
));
1086 END: Wrapper functions around OpenProcessToken
1087 and other functions in advapi32.dll that are only
1088 supported in Windows NT / 2k / XP
1092 get_native_system_info (LPSYSTEM_INFO lpSystemInfo
)
1094 static GetNativeSystemInfo_Proc s_pfn_Get_Native_System_Info
= NULL
;
1095 if (is_windows_9x () != TRUE
)
1097 if (g_b_init_get_native_system_info
== 0)
1099 g_b_init_get_native_system_info
= 1;
1100 s_pfn_Get_Native_System_Info
=
1101 (GetNativeSystemInfo_Proc
)GetProcAddress (GetModuleHandle ("kernel32.dll"),
1102 "GetNativeSystemInfo");
1104 if (s_pfn_Get_Native_System_Info
!= NULL
)
1105 s_pfn_Get_Native_System_Info (lpSystemInfo
);
1108 lpSystemInfo
->dwNumberOfProcessors
= -1;
1112 get_system_times (LPFILETIME lpIdleTime
,
1113 LPFILETIME lpKernelTime
,
1114 LPFILETIME lpUserTime
)
1116 static GetSystemTimes_Proc s_pfn_Get_System_times
= NULL
;
1117 if (is_windows_9x () == TRUE
)
1121 if (g_b_init_get_system_times
== 0)
1123 g_b_init_get_system_times
= 1;
1124 s_pfn_Get_System_times
=
1125 (GetSystemTimes_Proc
)GetProcAddress (GetModuleHandle ("kernel32.dll"),
1128 if (s_pfn_Get_System_times
== NULL
)
1130 return (s_pfn_Get_System_times (lpIdleTime
, lpKernelTime
, lpUserTime
));
1133 static BOOLEAN WINAPI
1134 create_symbolic_link (LPCSTR lpSymlinkFilename
,
1135 LPCSTR lpTargetFileName
,
1138 static CreateSymbolicLinkW_Proc s_pfn_Create_Symbolic_LinkW
= NULL
;
1139 static CreateSymbolicLinkA_Proc s_pfn_Create_Symbolic_LinkA
= NULL
;
1142 if (is_windows_9x () == TRUE
)
1147 if (w32_unicode_filenames
)
1149 wchar_t symfn_w
[MAX_PATH
], tgtfn_w
[MAX_PATH
];
1151 if (g_b_init_create_symbolic_link_w
== 0)
1153 g_b_init_create_symbolic_link_w
= 1;
1154 s_pfn_Create_Symbolic_LinkW
=
1155 (CreateSymbolicLinkW_Proc
)GetProcAddress (GetModuleHandle ("kernel32.dll"),
1156 "CreateSymbolicLinkW");
1158 if (s_pfn_Create_Symbolic_LinkW
== NULL
)
1164 filename_to_utf16 (lpSymlinkFilename
, symfn_w
);
1165 filename_to_utf16 (lpTargetFileName
, tgtfn_w
);
1166 retval
= s_pfn_Create_Symbolic_LinkW (symfn_w
, tgtfn_w
, dwFlags
);
1167 /* If we were denied creation of the symlink, try again after
1168 enabling the SeCreateSymbolicLinkPrivilege for our process. */
1171 TOKEN_PRIVILEGES priv_current
;
1173 if (enable_privilege (SE_CREATE_SYMBOLIC_LINK_NAME
, TRUE
,
1176 retval
= s_pfn_Create_Symbolic_LinkW (symfn_w
, tgtfn_w
, dwFlags
);
1177 restore_privilege (&priv_current
);
1184 char symfn_a
[MAX_PATH
], tgtfn_a
[MAX_PATH
];
1186 if (g_b_init_create_symbolic_link_a
== 0)
1188 g_b_init_create_symbolic_link_a
= 1;
1189 s_pfn_Create_Symbolic_LinkA
=
1190 (CreateSymbolicLinkA_Proc
)GetProcAddress (GetModuleHandle ("kernel32.dll"),
1191 "CreateSymbolicLinkA");
1193 if (s_pfn_Create_Symbolic_LinkA
== NULL
)
1199 filename_to_ansi (lpSymlinkFilename
, symfn_a
);
1200 filename_to_ansi (lpTargetFileName
, tgtfn_a
);
1201 retval
= s_pfn_Create_Symbolic_LinkA (symfn_a
, tgtfn_a
, dwFlags
);
1202 /* If we were denied creation of the symlink, try again after
1203 enabling the SeCreateSymbolicLinkPrivilege for our process. */
1206 TOKEN_PRIVILEGES priv_current
;
1208 if (enable_privilege (SE_CREATE_SYMBOLIC_LINK_NAME
, TRUE
,
1211 retval
= s_pfn_Create_Symbolic_LinkA (symfn_a
, tgtfn_a
, dwFlags
);
1212 restore_privilege (&priv_current
);
1221 is_valid_security_descriptor (PSECURITY_DESCRIPTOR pSecurityDescriptor
)
1223 static IsValidSecurityDescriptor_Proc s_pfn_Is_Valid_Security_Descriptor_Proc
= NULL
;
1225 if (is_windows_9x () == TRUE
)
1231 if (g_b_init_is_valid_security_descriptor
== 0)
1233 g_b_init_is_valid_security_descriptor
= 1;
1234 s_pfn_Is_Valid_Security_Descriptor_Proc
=
1235 (IsValidSecurityDescriptor_Proc
)GetProcAddress (GetModuleHandle ("Advapi32.dll"),
1236 "IsValidSecurityDescriptor");
1238 if (s_pfn_Is_Valid_Security_Descriptor_Proc
== NULL
)
1244 return s_pfn_Is_Valid_Security_Descriptor_Proc (pSecurityDescriptor
);
1248 convert_sd_to_sddl (PSECURITY_DESCRIPTOR SecurityDescriptor
,
1249 DWORD RequestedStringSDRevision
,
1250 SECURITY_INFORMATION SecurityInformation
,
1251 LPTSTR
*StringSecurityDescriptor
,
1252 PULONG StringSecurityDescriptorLen
)
1254 static ConvertSecurityDescriptorToStringSecurityDescriptor_Proc s_pfn_Convert_SD_To_SDDL
= NULL
;
1257 if (is_windows_9x () == TRUE
)
1263 if (g_b_init_convert_sd_to_sddl
== 0)
1265 g_b_init_convert_sd_to_sddl
= 1;
1267 s_pfn_Convert_SD_To_SDDL
=
1268 (ConvertSecurityDescriptorToStringSecurityDescriptor_Proc
)GetProcAddress (GetModuleHandle ("Advapi32.dll"),
1269 "ConvertSecurityDescriptorToStringSecurityDescriptorW");
1271 s_pfn_Convert_SD_To_SDDL
=
1272 (ConvertSecurityDescriptorToStringSecurityDescriptor_Proc
)GetProcAddress (GetModuleHandle ("Advapi32.dll"),
1273 "ConvertSecurityDescriptorToStringSecurityDescriptorA");
1276 if (s_pfn_Convert_SD_To_SDDL
== NULL
)
1282 retval
= s_pfn_Convert_SD_To_SDDL (SecurityDescriptor
,
1283 RequestedStringSDRevision
,
1284 SecurityInformation
,
1285 StringSecurityDescriptor
,
1286 StringSecurityDescriptorLen
);
1292 convert_sddl_to_sd (LPCTSTR StringSecurityDescriptor
,
1293 DWORD StringSDRevision
,
1294 PSECURITY_DESCRIPTOR
*SecurityDescriptor
,
1295 PULONG SecurityDescriptorSize
)
1297 static ConvertStringSecurityDescriptorToSecurityDescriptor_Proc s_pfn_Convert_SDDL_To_SD
= NULL
;
1300 if (is_windows_9x () == TRUE
)
1306 if (g_b_init_convert_sddl_to_sd
== 0)
1308 g_b_init_convert_sddl_to_sd
= 1;
1310 s_pfn_Convert_SDDL_To_SD
=
1311 (ConvertStringSecurityDescriptorToSecurityDescriptor_Proc
)GetProcAddress (GetModuleHandle ("Advapi32.dll"),
1312 "ConvertStringSecurityDescriptorToSecurityDescriptorW");
1314 s_pfn_Convert_SDDL_To_SD
=
1315 (ConvertStringSecurityDescriptorToSecurityDescriptor_Proc
)GetProcAddress (GetModuleHandle ("Advapi32.dll"),
1316 "ConvertStringSecurityDescriptorToSecurityDescriptorA");
1319 if (s_pfn_Convert_SDDL_To_SD
== NULL
)
1325 retval
= s_pfn_Convert_SDDL_To_SD (StringSecurityDescriptor
,
1328 SecurityDescriptorSize
);
1334 get_adapters_info (PIP_ADAPTER_INFO pAdapterInfo
, PULONG pOutBufLen
)
1336 static GetAdaptersInfo_Proc s_pfn_Get_Adapters_Info
= NULL
;
1337 HMODULE hm_iphlpapi
= NULL
;
1339 if (is_windows_9x () == TRUE
)
1340 return ERROR_NOT_SUPPORTED
;
1342 if (g_b_init_get_adapters_info
== 0)
1344 g_b_init_get_adapters_info
= 1;
1345 hm_iphlpapi
= LoadLibrary ("Iphlpapi.dll");
1347 s_pfn_Get_Adapters_Info
= (GetAdaptersInfo_Proc
)
1348 GetProcAddress (hm_iphlpapi
, "GetAdaptersInfo");
1350 if (s_pfn_Get_Adapters_Info
== NULL
)
1351 return ERROR_NOT_SUPPORTED
;
1352 return s_pfn_Get_Adapters_Info (pAdapterInfo
, pOutBufLen
);
1357 /* Return 1 if P is a valid pointer to an object of size SIZE. Return
1358 0 if P is NOT a valid pointer. Return -1 if we cannot validate P.
1360 This is called from alloc.c:valid_pointer_p. */
1362 w32_valid_pointer_p (void *p
, int size
)
1365 HANDLE h
= OpenProcess (PROCESS_VM_READ
, FALSE
, GetCurrentProcessId ());
1369 unsigned char *buf
= alloca (size
);
1370 int retval
= ReadProcessMemory (h
, p
, buf
, size
, &done
);
1381 /* Here's an overview of how the Windows build supports file names
1382 that cannot be encoded by the current system codepage.
1384 From the POV of Lisp and layers of C code above the functions here,
1385 Emacs on Windows pretends that its file names are encoded in UTF-8;
1386 see encode_file and decode_file on coding.c. Any file name that is
1387 passed as a unibyte string to C functions defined here is assumed
1388 to be in UTF-8 encoding. Any file name returned by functions
1389 defined here must be in UTF-8 encoding, with only a few exceptions
1390 reserved for a couple of special cases. (Be sure to use
1391 MAX_UTF8_PATH for char arrays that store UTF-8 encoded file names,
1392 as they can be much longer than MAX_PATH!)
1394 The UTF-8 encoded file names cannot be passed to system APIs, as
1395 Windows does not support that. Therefore, they are converted
1396 either to UTF-16 or to the ANSI codepage, depending on the value of
1397 w32-unicode-filenames, before calling any system APIs or CRT library
1398 functions. The default value of that variable is determined by the
1399 OS on which Emacs runs: nil on Windows 9X and t otherwise, but the
1400 user can change that default (although I don't see why would she
1403 The 4 functions defined below, filename_to_utf16, filename_to_ansi,
1404 filename_from_utf16, and filename_from_ansi, are the workhorses of
1405 these conversions. They rely on Windows native APIs
1406 MultiByteToWideChar and WideCharToMultiByte; we cannot use
1407 functions from coding.c here, because they allocate memory, which
1408 is a bad idea on the level of libc, which is what the functions
1409 here emulate. (If you worry about performance due to constant
1410 conversion back and forth from UTF-8 to UTF-16, then don't: first,
1411 it was measured to take only a few microseconds on a not-so-fast
1412 machine, and second, that's exactly what the ANSI APIs we used
1413 before did anyway, because they are just thin wrappers around the
1416 The variables file-name-coding-system and default-file-name-coding-system
1417 still exist, but are actually used only when a file name needs to
1418 be converted to the ANSI codepage. This happens all the time when
1419 w32-unicode-filenames is nil, but can also happen from time to time
1420 when it is t. Otherwise, these variables have no effect on file-name
1421 encoding when w32-unicode-filenames is t; this is similar to
1422 selection-coding-system.
1424 This arrangement works very well, but it has a few gotchas and
1427 . Lisp code that encodes or decodes file names manually should
1428 normally use 'utf-8' as the coding-system on Windows,
1429 disregarding file-name-coding-system. This is a somewhat
1430 unpleasant consequence, but it cannot be avoided. Fortunately,
1431 very few Lisp packages need to do that.
1433 More generally, passing to library functions (e.g., fopen or
1434 opendir) file names already encoded in the ANSI codepage is
1435 explicitly *verboten*, as all those functions, as shadowed and
1436 emulated here, assume they will receive UTF-8 encoded file names.
1438 For the same reasons, no CRT function or Win32 API can be called
1439 directly in Emacs sources, without either converting the file
1440 names from UTF-8 to UTF-16 or ANSI codepage, or going through
1441 some shadowing function defined here.
1443 . Environment variables stored in Vprocess_environment are encoded
1444 in the ANSI codepage, so if getenv/egetenv is used for a variable
1445 whose value is a file name or a list of directories, it needs to
1446 be converted to UTF-8, before it is used as argument to functions
1447 or decoded into a Lisp string.
1449 . File names passed to external libraries, like the image libraries
1450 and GnuTLS, need special handling. These libraries generally
1451 don't support UTF-16 or UTF-8 file names, so they must get file
1452 names encoded in the ANSI codepage. To facilitate using these
1453 libraries with file names that are not encodable in the ANSI
1454 codepage, use the function ansi_encode_filename, which will try
1455 to use the short 8+3 alias of a file name if that file name is
1456 not encodable in the ANSI codepage. See image.c and gnutls.c for
1457 examples of how this should be done.
1459 . Running subprocesses in non-ASCII directories and with non-ASCII
1460 file arguments is limited to the current codepage (even though
1461 Emacs is perfectly capable of finding an executable program file
1462 in a directory whose name cannot be encoded in the current
1463 codepage). This is because the command-line arguments are
1464 encoded _before_ they get to the w32-specific level, and the
1465 encoding is not known in advance (it doesn't have to be the
1466 current ANSI codepage), so w32proc.c functions cannot re-encode
1467 them in UTF-16. This should be fixed, but will also require
1468 changes in cmdproxy. The current limitation is not terribly bad
1469 anyway, since very few, if any, Windows console programs that are
1470 likely to be invoked by Emacs support UTF-16 encoded command
1473 . For similar reasons, server.el and emacsclient are also limited
1474 to the current ANSI codepage for now.
1476 . Emacs itself can only handle command-line arguments encoded in
1477 the current codepage.
1479 . Turning on w32-unicode-filename on Windows 9X (if it at all
1480 works) requires UNICOWS.DLL, which is thus a requirement even in
1481 non-GUI sessions, something the we previously avoided. */
1485 /* Converting file names from UTF-8 to either UTF-16 or the ANSI
1486 codepage defined by file-name-coding-system. */
1488 /* Current codepage for encoding file names. */
1489 static int file_name_codepage
;
1491 /* Produce a Windows ANSI codepage suitable for encoding file names.
1492 Return the information about that codepage in CP_INFO. */
1494 codepage_for_filenames (CPINFO
*cp_info
)
1496 /* A simple cache to avoid calling GetCPInfo every time we need to
1497 encode/decode a file name. The file-name encoding is not
1498 supposed to be changed too frequently, if ever. */
1499 static Lisp_Object last_file_name_encoding
;
1501 Lisp_Object current_encoding
;
1503 current_encoding
= Vfile_name_coding_system
;
1504 if (NILP (current_encoding
))
1505 current_encoding
= Vdefault_file_name_coding_system
;
1507 if (!EQ (last_file_name_encoding
, current_encoding
))
1509 /* Default to the current ANSI codepage. */
1510 file_name_codepage
= w32_ansi_code_page
;
1512 if (NILP (current_encoding
))
1514 char *cpname
= SDATA (SYMBOL_NAME (current_encoding
));
1515 char *cp
= NULL
, *end
;
1518 if (strncmp (cpname
, "cp", 2) == 0)
1520 else if (strncmp (cpname
, "windows-", 8) == 0)
1526 cpnum
= strtol (cp
, &end
, 10);
1527 if (cpnum
&& *end
== '\0' && end
- cp
>= 2)
1528 file_name_codepage
= cpnum
;
1532 if (!file_name_codepage
)
1533 file_name_codepage
= CP_ACP
; /* CP_ACP = 0, but let's not assume that */
1535 if (!GetCPInfo (file_name_codepage
, &cp
))
1537 file_name_codepage
= CP_ACP
;
1538 if (!GetCPInfo (file_name_codepage
, &cp
))
1545 return file_name_codepage
;
1549 filename_to_utf16 (const char *fn_in
, wchar_t *fn_out
)
1551 int result
= pMultiByteToWideChar (CP_UTF8
, MB_ERR_INVALID_CHARS
, fn_in
, -1,
1556 DWORD err
= GetLastError ();
1560 case ERROR_INVALID_FLAGS
:
1561 case ERROR_INVALID_PARAMETER
:
1564 case ERROR_INSUFFICIENT_BUFFER
:
1565 case ERROR_NO_UNICODE_TRANSLATION
:
1576 filename_from_utf16 (const wchar_t *fn_in
, char *fn_out
)
1578 int result
= pWideCharToMultiByte (CP_UTF8
, 0, fn_in
, -1,
1579 fn_out
, MAX_UTF8_PATH
, NULL
, NULL
);
1583 DWORD err
= GetLastError ();
1587 case ERROR_INVALID_FLAGS
:
1588 case ERROR_INVALID_PARAMETER
:
1591 case ERROR_INSUFFICIENT_BUFFER
:
1592 case ERROR_NO_UNICODE_TRANSLATION
:
1603 filename_to_ansi (const char *fn_in
, char *fn_out
)
1605 wchar_t fn_utf16
[MAX_PATH
];
1607 if (filename_to_utf16 (fn_in
, fn_utf16
) == 0)
1610 int codepage
= codepage_for_filenames (NULL
);
1612 result
= pWideCharToMultiByte (codepage
, 0, fn_utf16
, -1,
1613 fn_out
, MAX_PATH
, NULL
, NULL
);
1616 DWORD err
= GetLastError ();
1620 case ERROR_INVALID_FLAGS
:
1621 case ERROR_INVALID_PARAMETER
:
1624 case ERROR_INSUFFICIENT_BUFFER
:
1625 case ERROR_NO_UNICODE_TRANSLATION
:
1638 filename_from_ansi (const char *fn_in
, char *fn_out
)
1640 wchar_t fn_utf16
[MAX_PATH
];
1641 int codepage
= codepage_for_filenames (NULL
);
1642 int result
= pMultiByteToWideChar (codepage
, MB_ERR_INVALID_CHARS
, fn_in
, -1,
1643 fn_utf16
, MAX_PATH
);
1647 DWORD err
= GetLastError ();
1651 case ERROR_INVALID_FLAGS
:
1652 case ERROR_INVALID_PARAMETER
:
1655 case ERROR_INSUFFICIENT_BUFFER
:
1656 case ERROR_NO_UNICODE_TRANSLATION
:
1663 return filename_from_utf16 (fn_utf16
, fn_out
);
1668 /* The directory where we started, in UTF-8. */
1669 static char startup_dir
[MAX_UTF8_PATH
];
1671 /* Get the current working directory. */
1673 getcwd (char *dir
, int dirsize
)
1680 if (dirsize
<= strlen (startup_dir
))
1686 if (GetCurrentDirectory (MAXPATHLEN
, dir
) > 0)
1690 /* Emacs doesn't actually change directory itself, it stays in the
1691 same directory where it was started. */
1692 strcpy (dir
, startup_dir
);
1697 /* Emulate getloadavg. */
1699 struct load_sample
{
1706 /* Number of processors on this machine. */
1707 static unsigned num_of_processors
;
1709 /* We maintain 1-sec samples for the last 16 minutes in a circular buffer. */
1710 static struct load_sample samples
[16*60];
1711 static int first_idx
= -1, last_idx
= -1;
1712 static int max_idx
= ARRAYELTS (samples
);
1717 int next_idx
= from
+ 1;
1719 if (next_idx
>= max_idx
)
1728 int prev_idx
= from
- 1;
1731 prev_idx
= max_idx
- 1;
1737 sample_system_load (ULONGLONG
*idle
, ULONGLONG
*kernel
, ULONGLONG
*user
)
1739 SYSTEM_INFO sysinfo
;
1740 FILETIME ft_idle
, ft_user
, ft_kernel
;
1742 /* Initialize the number of processors on this machine. */
1743 if (num_of_processors
<= 0)
1745 get_native_system_info (&sysinfo
);
1746 num_of_processors
= sysinfo
.dwNumberOfProcessors
;
1747 if (num_of_processors
<= 0)
1749 GetSystemInfo (&sysinfo
);
1750 num_of_processors
= sysinfo
.dwNumberOfProcessors
;
1752 if (num_of_processors
<= 0)
1753 num_of_processors
= 1;
1756 /* TODO: Take into account threads that are ready to run, by
1757 sampling the "\System\Processor Queue Length" performance
1758 counter. The code below accounts only for threads that are
1759 actually running. */
1761 if (get_system_times (&ft_idle
, &ft_kernel
, &ft_user
))
1763 ULARGE_INTEGER uidle
, ukernel
, uuser
;
1765 memcpy (&uidle
, &ft_idle
, sizeof (ft_idle
));
1766 memcpy (&ukernel
, &ft_kernel
, sizeof (ft_kernel
));
1767 memcpy (&uuser
, &ft_user
, sizeof (ft_user
));
1768 *idle
= uidle
.QuadPart
;
1769 *kernel
= ukernel
.QuadPart
;
1770 *user
= uuser
.QuadPart
;
1780 /* Produce the load average for a given time interval, using the
1781 samples in the samples[] array. WHICH can be 0, 1, or 2, meaning
1782 1-minute, 5-minute, or 15-minute average, respectively. */
1786 double retval
= -1.0;
1789 double span
= (which
== 0 ? 1.0 : (which
== 1 ? 5.0 : 15.0)) * 60;
1790 time_t now
= samples
[last_idx
].sample_time
;
1792 if (first_idx
!= last_idx
)
1794 for (idx
= buf_prev (last_idx
); ; idx
= buf_prev (idx
))
1796 tdiff
= difftime (now
, samples
[idx
].sample_time
);
1797 if (tdiff
>= span
- 2*DBL_EPSILON
*now
)
1800 samples
[last_idx
].kernel
+ samples
[last_idx
].user
1801 - (samples
[idx
].kernel
+ samples
[idx
].user
);
1802 long double idl
= samples
[last_idx
].idle
- samples
[idx
].idle
;
1804 retval
= (1.0 - idl
/ sys
) * num_of_processors
;
1807 if (idx
== first_idx
)
1816 getloadavg (double loadavg
[], int nelem
)
1819 ULONGLONG idle
, kernel
, user
;
1820 time_t now
= time (NULL
);
1822 /* If system time jumped back for some reason, delete all samples
1823 whose time is later than the current wall-clock time. This
1824 prevents load average figures from becoming frozen for prolonged
1825 periods of time, when system time is reset backwards. */
1828 while (difftime (now
, samples
[last_idx
].sample_time
) < -1.0)
1830 if (last_idx
== first_idx
)
1832 first_idx
= last_idx
= -1;
1835 last_idx
= buf_prev (last_idx
);
1839 /* Store another sample. We ignore samples that are less than 1 sec
1842 || (difftime (now
, samples
[last_idx
].sample_time
)
1843 >= 1.0 - 2*DBL_EPSILON
*now
))
1845 sample_system_load (&idle
, &kernel
, &user
);
1846 last_idx
= buf_next (last_idx
);
1847 samples
[last_idx
].sample_time
= now
;
1848 samples
[last_idx
].idle
= idle
;
1849 samples
[last_idx
].kernel
= kernel
;
1850 samples
[last_idx
].user
= user
;
1851 /* If the buffer has more that 15 min worth of samples, discard
1853 if (first_idx
== -1)
1854 first_idx
= last_idx
;
1855 while (first_idx
!= last_idx
1856 && (difftime (now
, samples
[first_idx
].sample_time
)
1857 >= 15.0*60 + 2*DBL_EPSILON
*now
))
1858 first_idx
= buf_next (first_idx
);
1861 for (elem
= 0; elem
< nelem
; elem
++)
1863 double avg
= getavg (elem
);
1867 loadavg
[elem
] = avg
;
1873 /* Emulate getpwuid, getpwnam and others. */
1875 #define PASSWD_FIELD_SIZE 256
1877 static char dflt_passwd_name
[PASSWD_FIELD_SIZE
];
1878 static char dflt_passwd_passwd
[PASSWD_FIELD_SIZE
];
1879 static char dflt_passwd_gecos
[PASSWD_FIELD_SIZE
];
1880 static char dflt_passwd_dir
[MAX_UTF8_PATH
];
1881 static char dflt_passwd_shell
[MAX_UTF8_PATH
];
1883 static struct passwd dflt_passwd
=
1895 static char dflt_group_name
[GNLEN
+1];
1897 static struct group dflt_group
=
1899 /* When group information is not available, we return this as the
1900 group for all files. */
1908 return dflt_passwd
.pw_uid
;
1914 /* I could imagine arguing for checking to see whether the user is
1915 in the Administrators group and returning a UID of 0 for that
1916 case, but I don't know how wise that would be in the long run. */
1923 return dflt_passwd
.pw_gid
;
1933 getpwuid (unsigned uid
)
1935 if (uid
== dflt_passwd
.pw_uid
)
1936 return &dflt_passwd
;
1941 getgrgid (gid_t gid
)
1947 getpwnam (char *name
)
1951 pw
= getpwuid (getuid ());
1955 if (xstrcasecmp (name
, pw
->pw_name
))
1962 init_user_info (void)
1964 /* Find the user's real name by opening the process token and
1965 looking up the name associated with the user-sid in that token.
1967 Use the relative portion of the identifier authority value from
1968 the user-sid as the user id value (same for group id using the
1969 primary group sid from the process token). */
1971 char uname
[UNLEN
+1], gname
[GNLEN
+1], domain
[1025];
1972 DWORD ulength
= sizeof (uname
), dlength
= sizeof (domain
), needed
;
1973 DWORD glength
= sizeof (gname
);
1974 HANDLE token
= NULL
;
1975 SID_NAME_USE user_type
;
1976 unsigned char *buf
= NULL
;
1978 TOKEN_USER user_token
;
1979 TOKEN_PRIMARY_GROUP group_token
;
1982 result
= open_process_token (GetCurrentProcess (), TOKEN_QUERY
, &token
);
1985 result
= get_token_information (token
, TokenUser
, NULL
, 0, &blen
);
1986 if (!result
&& GetLastError () == ERROR_INSUFFICIENT_BUFFER
)
1988 buf
= xmalloc (blen
);
1989 result
= get_token_information (token
, TokenUser
,
1990 (LPVOID
)buf
, blen
, &needed
);
1993 memcpy (&user_token
, buf
, sizeof (user_token
));
1994 result
= lookup_account_sid (NULL
, user_token
.User
.Sid
,
1996 domain
, &dlength
, &user_type
);
2004 strcpy (dflt_passwd
.pw_name
, uname
);
2005 /* Determine a reasonable uid value. */
2006 if (xstrcasecmp ("administrator", uname
) == 0)
2008 dflt_passwd
.pw_uid
= 500; /* well-known Administrator uid */
2009 dflt_passwd
.pw_gid
= 513; /* well-known None gid */
2013 /* Use the last sub-authority value of the RID, the relative
2014 portion of the SID, as user/group ID. */
2015 dflt_passwd
.pw_uid
= get_rid (user_token
.User
.Sid
);
2017 /* Get group id and name. */
2018 result
= get_token_information (token
, TokenPrimaryGroup
,
2019 (LPVOID
)buf
, blen
, &needed
);
2020 if (!result
&& GetLastError () == ERROR_INSUFFICIENT_BUFFER
)
2022 buf
= xrealloc (buf
, blen
= needed
);
2023 result
= get_token_information (token
, TokenPrimaryGroup
,
2024 (LPVOID
)buf
, blen
, &needed
);
2028 memcpy (&group_token
, buf
, sizeof (group_token
));
2029 dflt_passwd
.pw_gid
= get_rid (group_token
.PrimaryGroup
);
2030 dlength
= sizeof (domain
);
2031 /* If we can get at the real Primary Group name, use that.
2032 Otherwise, the default group name was already set to
2033 "None" in globals_of_w32. */
2034 if (lookup_account_sid (NULL
, group_token
.PrimaryGroup
,
2035 gname
, &glength
, NULL
, &dlength
,
2037 strcpy (dflt_group_name
, gname
);
2040 dflt_passwd
.pw_gid
= dflt_passwd
.pw_uid
;
2043 /* If security calls are not supported (presumably because we
2044 are running under Windows 9X), fallback to this: */
2045 else if (GetUserName (uname
, &ulength
))
2047 strcpy (dflt_passwd
.pw_name
, uname
);
2048 if (xstrcasecmp ("administrator", uname
) == 0)
2049 dflt_passwd
.pw_uid
= 0;
2051 dflt_passwd
.pw_uid
= 123;
2052 dflt_passwd
.pw_gid
= dflt_passwd
.pw_uid
;
2056 strcpy (dflt_passwd
.pw_name
, "unknown");
2057 dflt_passwd
.pw_uid
= 123;
2058 dflt_passwd
.pw_gid
= 123;
2060 dflt_group
.gr_gid
= dflt_passwd
.pw_gid
;
2062 /* Set dir and shell from environment variables. */
2063 if (w32_unicode_filenames
)
2065 wchar_t *home
= _wgetenv (L
"HOME");
2066 wchar_t *shell
= _wgetenv (L
"SHELL");
2068 /* Ensure HOME and SHELL are defined. */
2073 filename_from_utf16 (home
, dflt_passwd
.pw_dir
);
2074 filename_from_utf16 (shell
, dflt_passwd
.pw_shell
);
2078 char *home
= getenv ("HOME");
2079 char *shell
= getenv ("SHELL");
2085 filename_from_ansi (home
, dflt_passwd
.pw_dir
);
2086 filename_from_ansi (shell
, dflt_passwd
.pw_shell
);
2091 CloseHandle (token
);
2097 /* rand () on NT gives us 15 random bits...hack together 30 bits. */
2098 return ((rand () << 15) | rand ());
2107 /* Return the maximum length in bytes of a multibyte character
2108 sequence encoded in the current ANSI codepage. This is required to
2109 correctly walk the encoded file names one character at a time. */
2111 max_filename_mbslen (void)
2115 codepage_for_filenames (&cp_info
);
2116 return cp_info
.MaxCharSize
;
2119 /* Normalize filename by converting in-place all of its path
2120 separators to the separator specified by PATH_SEP. */
2123 normalize_filename (register char *fp
, char path_sep
)
2127 /* Always lower-case drive letters a-z, even if the filesystem
2128 preserves case in filenames.
2129 This is so filenames can be compared by string comparison
2130 functions that are case-sensitive. Even case-preserving filesystems
2131 do not distinguish case in drive letters. */
2134 if (*p2
== ':' && *fp
>= 'A' && *fp
<= 'Z')
2142 if ((*fp
== '/' || *fp
== '\\') && *fp
!= path_sep
)
2148 /* Destructively turn backslashes into slashes. */
2150 dostounix_filename (register char *p
)
2152 normalize_filename (p
, '/');
2155 /* Destructively turn slashes into backslashes. */
2157 unixtodos_filename (register char *p
)
2159 normalize_filename (p
, '\\');
2162 /* Remove all CR's that are followed by a LF.
2163 (From msdos.c...probably should figure out a way to share it,
2164 although this code isn't going to ever change.) */
2166 crlf_to_lf (register int n
, register unsigned char *buf
)
2168 unsigned char *np
= buf
;
2169 unsigned char *startp
= buf
;
2170 unsigned char *endp
= buf
+ n
;
2174 while (buf
< endp
- 1)
2178 if (*(++buf
) != 0x0a)
2189 /* Parse the root part of file name, if present. Return length and
2190 optionally store pointer to char after root. */
2192 parse_root (const char * name
, const char ** pPath
)
2194 const char * start
= name
;
2199 /* find the root name of the volume if given */
2200 if (isalpha (name
[0]) && name
[1] == ':')
2202 /* skip past drive specifier */
2204 if (IS_DIRECTORY_SEP (name
[0]))
2207 else if (IS_DIRECTORY_SEP (name
[0]) && IS_DIRECTORY_SEP (name
[1]))
2214 if (IS_DIRECTORY_SEP (*name
) && --slashes
== 0)
2219 if (IS_DIRECTORY_SEP (name
[0]))
2226 return name
- start
;
2229 /* Get long base name for name; name is assumed to be absolute. */
2231 get_long_basename (char * name
, char * buf
, int size
)
2233 HANDLE dir_handle
= INVALID_HANDLE_VALUE
;
2234 char fname_utf8
[MAX_UTF8_PATH
];
2238 /* Must be valid filename, no wild cards or other invalid characters. */
2239 if (strpbrk (name
, "*?|<>\""))
2242 if (w32_unicode_filenames
)
2244 wchar_t fname_utf16
[MAX_PATH
];
2245 WIN32_FIND_DATAW find_data_wide
;
2247 filename_to_utf16 (name
, fname_utf16
);
2248 dir_handle
= FindFirstFileW (fname_utf16
, &find_data_wide
);
2249 if (dir_handle
!= INVALID_HANDLE_VALUE
)
2250 cstatus
= filename_from_utf16 (find_data_wide
.cFileName
, fname_utf8
);
2254 char fname_ansi
[MAX_PATH
];
2255 WIN32_FIND_DATAA find_data_ansi
;
2257 filename_to_ansi (name
, fname_ansi
);
2258 /* If the ANSI name includes ? characters, it is not encodable
2259 in the ANSI codepage. In that case, we deliver the question
2260 marks to the caller; calling FindFirstFileA in this case
2261 could return some unrelated file name in the same
2263 if (_mbspbrk (fname_ansi
, "?"))
2265 /* Find the basename of fname_ansi. */
2266 char *p
= strrchr (fname_ansi
, '\\');
2272 cstatus
= filename_from_ansi (p
, fname_utf8
);
2276 dir_handle
= FindFirstFileA (fname_ansi
, &find_data_ansi
);
2277 if (dir_handle
!= INVALID_HANDLE_VALUE
)
2278 cstatus
= filename_from_ansi (find_data_ansi
.cFileName
, fname_utf8
);
2282 if (cstatus
== 0 && (len
= strlen (fname_utf8
)) < size
)
2283 memcpy (buf
, fname_utf8
, len
+ 1);
2287 if (dir_handle
!= INVALID_HANDLE_VALUE
)
2288 FindClose (dir_handle
);
2293 /* Get long name for file, if possible (assumed to be absolute). */
2295 w32_get_long_filename (const char * name
, char * buf
, int size
)
2300 char full
[ MAX_UTF8_PATH
];
2303 len
= strlen (name
);
2304 if (len
>= MAX_UTF8_PATH
)
2307 /* Use local copy for destructive modification. */
2308 memcpy (full
, name
, len
+1);
2309 unixtodos_filename (full
);
2311 /* Copy root part verbatim. */
2312 len
= parse_root (full
, (const char **)&p
);
2313 memcpy (o
, full
, len
);
2318 while (p
!= NULL
&& *p
)
2321 p
= strchr (q
, '\\');
2323 len
= get_long_basename (full
, o
, size
);
2346 w32_get_short_filename (const char * name
, char * buf
, int size
)
2348 if (w32_unicode_filenames
)
2350 wchar_t name_utf16
[MAX_PATH
], short_name
[MAX_PATH
];
2351 unsigned int retval
;
2353 filename_to_utf16 (name
, name_utf16
);
2354 retval
= GetShortPathNameW (name_utf16
, short_name
, size
);
2355 if (retval
&& retval
< size
)
2356 filename_from_utf16 (short_name
, buf
);
2361 char name_ansi
[MAX_PATH
];
2363 filename_to_ansi (name
, name_ansi
);
2364 return GetShortPathNameA (name_ansi
, buf
, size
);
2368 /* Re-encode FILENAME, a UTF-8 encoded unibyte string, using the
2369 MS-Windows ANSI codepage. If FILENAME includes characters not
2370 supported by the ANSI codepage, return the 8+3 alias of FILENAME,
2371 if it exists. This is needed because the w32 build wants to
2372 support file names outside of the system locale, but image
2373 libraries typically don't support wide (a.k.a. "Unicode") APIs
2374 required for that. */
2377 ansi_encode_filename (Lisp_Object filename
)
2379 Lisp_Object encoded_filename
;
2380 char fname
[MAX_PATH
];
2382 filename_to_ansi (SSDATA (filename
), fname
);
2383 if (_mbspbrk (fname
, "?"))
2385 char shortname
[MAX_PATH
];
2387 if (w32_get_short_filename (SDATA (filename
), shortname
, MAX_PATH
))
2389 dostounix_filename (shortname
);
2390 encoded_filename
= build_string (shortname
);
2393 encoded_filename
= build_unibyte_string (fname
);
2396 encoded_filename
= build_unibyte_string (fname
);
2397 return encoded_filename
;
2401 is_unc_volume (const char *filename
)
2403 const char *ptr
= filename
;
2405 if (!IS_DIRECTORY_SEP (ptr
[0]) || !IS_DIRECTORY_SEP (ptr
[1]) || !ptr
[2])
2408 if (strpbrk (ptr
+ 2, "*?|<>\"\\/"))
2414 /* Emulate the Posix unsetenv. */
2416 unsetenv (const char *name
)
2421 if (name
== NULL
|| *name
== '\0' || strchr (name
, '=') != NULL
)
2426 name_len
= strlen (name
);
2427 /* MS docs says an environment variable cannot be longer than 32K. */
2428 if (name_len
> 32767)
2433 /* It is safe to use 'alloca' with 32K size, since the stack is at
2434 least 2MB, and we set it to 8MB in the link command line. */
2435 var
= alloca (name_len
+ 2);
2436 strncpy (var
, name
, name_len
);
2437 var
[name_len
++] = '=';
2438 var
[name_len
] = '\0';
2439 return _putenv (var
);
2442 /* MS _putenv doesn't support removing a variable when the argument
2443 does not include the '=' character, so we fix that here. */
2445 sys_putenv (char *str
)
2447 const char *const name_end
= strchr (str
, '=');
2449 if (name_end
== NULL
)
2451 /* Remove the variable from the environment. */
2452 return unsetenv (str
);
2455 return _putenv (str
);
2458 #define REG_ROOT "SOFTWARE\\GNU\\Emacs"
2461 w32_get_resource (char *key
, LPDWORD lpdwtype
)
2464 HKEY hrootkey
= NULL
;
2467 /* Check both the current user and the local machine to see if
2468 we have any resources. */
2470 if (RegOpenKeyEx (HKEY_CURRENT_USER
, REG_ROOT
, 0, KEY_READ
, &hrootkey
) == ERROR_SUCCESS
)
2474 if (RegQueryValueEx (hrootkey
, key
, NULL
, NULL
, NULL
, &cbData
) == ERROR_SUCCESS
2475 && (lpvalue
= xmalloc (cbData
)) != NULL
2476 && RegQueryValueEx (hrootkey
, key
, NULL
, lpdwtype
, lpvalue
, &cbData
) == ERROR_SUCCESS
)
2478 RegCloseKey (hrootkey
);
2484 RegCloseKey (hrootkey
);
2487 if (RegOpenKeyEx (HKEY_LOCAL_MACHINE
, REG_ROOT
, 0, KEY_READ
, &hrootkey
) == ERROR_SUCCESS
)
2491 if (RegQueryValueEx (hrootkey
, key
, NULL
, NULL
, NULL
, &cbData
) == ERROR_SUCCESS
2492 && (lpvalue
= xmalloc (cbData
)) != NULL
2493 && RegQueryValueEx (hrootkey
, key
, NULL
, lpdwtype
, lpvalue
, &cbData
) == ERROR_SUCCESS
)
2495 RegCloseKey (hrootkey
);
2501 RegCloseKey (hrootkey
);
2507 /* The argv[] array holds ANSI-encoded strings, and so this function
2508 works with ANS_encoded strings. */
2510 init_environment (char ** argv
)
2512 static const char * const tempdirs
[] = {
2513 "$TMPDIR", "$TEMP", "$TMP", "c:/"
2518 const int imax
= ARRAYELTS (tempdirs
);
2520 /* Implementation note: This function explicitly works with ANSI
2521 file names, not with UTF-8 encoded file names. This is because
2522 this function pushes variables into the Emacs's environment, and
2523 the environment variables are always assumed to be in the
2524 locale-specific encoding. Do NOT call any functions that accept
2525 UTF-8 file names from this function! */
2527 /* Make sure they have a usable $TMPDIR. Many Emacs functions use
2528 temporary files and assume "/tmp" if $TMPDIR is unset, which
2529 will break on DOS/Windows. Refuse to work if we cannot find
2530 a directory, not even "c:/", usable for that purpose. */
2531 for (i
= 0; i
< imax
; i
++)
2533 const char *tmp
= tempdirs
[i
];
2536 tmp
= getenv (tmp
+ 1);
2537 /* Note that `access' can lie to us if the directory resides on a
2538 read-only filesystem, like CD-ROM or a write-protected floppy.
2539 The only way to be really sure is to actually create a file and
2540 see if it succeeds. But I think that's too much to ask. */
2542 /* MSVCRT's _access crashes with D_OK, so we use our replacement. */
2543 if (tmp
&& sys_access (tmp
, D_OK
) == 0)
2545 char * var
= alloca (strlen (tmp
) + 8);
2546 sprintf (var
, "TMPDIR=%s", tmp
);
2547 _putenv (strdup (var
));
2554 Fcons (build_string ("no usable temporary directories found!!"),
2556 "While setting TMPDIR: ");
2558 /* Check for environment variables and use registry settings if they
2559 don't exist. Fallback on default values where applicable. */
2564 char locale_name
[32];
2565 char default_home
[MAX_PATH
];
2568 static const struct env_entry
2574 /* If the default value is NULL, we will use the value from the
2575 outside environment or the Registry, but will not push the
2576 variable into the Emacs environment if it is defined neither
2577 in the Registry nor in the outside environment. */
2579 {"PRELOAD_WINSOCK", NULL
},
2580 {"emacs_dir", "C:/emacs"},
2581 {"EMACSLOADPATH", NULL
},
2582 {"SHELL", "cmdproxy.exe"}, /* perhaps it is somewhere on PATH */
2583 {"EMACSDATA", NULL
},
2584 {"EMACSPATH", NULL
},
2591 #define N_ENV_VARS ARRAYELTS (dflt_envvars)
2593 /* We need to copy dflt_envvars[] and work on the copy because we
2594 don't want the dumped Emacs to inherit the values of
2595 environment variables we saw during dumping (which could be on
2596 a different system). The defaults above must be left intact. */
2597 struct env_entry env_vars
[N_ENV_VARS
];
2599 for (i
= 0; i
< N_ENV_VARS
; i
++)
2600 env_vars
[i
] = dflt_envvars
[i
];
2602 /* For backwards compatibility, check if a .emacs file exists in C:/
2603 If not, then we can try to default to the appdata directory under the
2604 user's profile, which is more likely to be writable. */
2605 if (sys_access ("C:/.emacs", F_OK
) != 0)
2607 HRESULT profile_result
;
2608 /* Dynamically load ShGetFolderPath, as it won't exist on versions
2609 of Windows 95 and NT4 that have not been updated to include
2611 ShGetFolderPath_fn get_folder_path
;
2612 get_folder_path
= (ShGetFolderPath_fn
)
2613 GetProcAddress (GetModuleHandle ("shell32.dll"), "SHGetFolderPathA");
2615 if (get_folder_path
!= NULL
)
2617 profile_result
= get_folder_path (NULL
, CSIDL_APPDATA
, NULL
,
2620 /* If we can't get the appdata dir, revert to old behavior. */
2621 if (profile_result
== S_OK
)
2623 env_vars
[0].def_value
= default_home
;
2629 /* Get default locale info and use it for LANG. */
2630 if (GetLocaleInfo (LOCALE_USER_DEFAULT
,
2631 LOCALE_SABBREVLANGNAME
| LOCALE_USE_CP_ACP
,
2632 locale_name
, sizeof (locale_name
)))
2634 for (i
= 0; i
< N_ENV_VARS
; i
++)
2636 if (strcmp (env_vars
[i
].name
, "LANG") == 0)
2638 env_vars
[i
].def_value
= locale_name
;
2644 #define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */
2646 /* Treat emacs_dir specially: set it unconditionally based on our
2650 char modname
[MAX_PATH
];
2652 if (!GetModuleFileNameA (NULL
, modname
, MAX_PATH
))
2654 if ((p
= _mbsrchr (modname
, '\\')) == NULL
)
2658 if ((p
= _mbsrchr (modname
, '\\'))
2659 /* From bin means installed Emacs, from src means uninstalled. */
2660 && (xstrcasecmp (p
, "\\bin") == 0 || xstrcasecmp (p
, "\\src") == 0))
2662 char buf
[SET_ENV_BUF_SIZE
];
2663 int within_build_tree
= xstrcasecmp (p
, "\\src") == 0;
2666 for (p
= modname
; *p
; p
= CharNext (p
))
2667 if (*p
== '\\') *p
= '/';
2669 _snprintf (buf
, sizeof (buf
)-1, "emacs_dir=%s", modname
);
2670 _putenv (strdup (buf
));
2671 /* If we are running from the Posix-like build tree, define
2672 SHELL to point to our own cmdproxy. The loop below will
2673 then disregard PATH_EXEC and the default value. */
2674 if (within_build_tree
)
2676 _snprintf (buf
, sizeof (buf
) - 1,
2677 "SHELL=%s/nt/cmdproxy.exe", modname
);
2678 _putenv (strdup (buf
));
2683 for (i
= 0; i
< N_ENV_VARS
; i
++)
2685 if (!getenv (env_vars
[i
].name
))
2688 char bufc
[SET_ENV_BUF_SIZE
];
2690 if ((lpval
= w32_get_resource (env_vars
[i
].name
, &dwType
)) == NULL
2691 /* Also ignore empty environment variables. */
2696 if (strcmp (env_vars
[i
].name
, "SHELL") == 0)
2698 /* Look for cmdproxy.exe in every directory in
2699 PATH_EXEC. FIXME: This does not find cmdproxy
2700 in nt/ when we run uninstalled. */
2701 char fname
[MAX_PATH
];
2702 const char *pstart
= PATH_EXEC
, *pend
;
2705 pend
= _mbschr (pstart
, ';');
2707 pend
= pstart
+ strlen (pstart
);
2708 /* Be defensive against series of ;;; characters. */
2711 strncpy (fname
, pstart
, pend
- pstart
);
2712 fname
[pend
- pstart
] = '/';
2713 strcpy (&fname
[pend
- pstart
+ 1], "cmdproxy.exe");
2714 ExpandEnvironmentStrings ((LPSTR
) fname
, bufc
,
2716 if (sys_access (bufc
, F_OK
) == 0)
2729 /* If not found in any directory, use the
2730 default as the last resort. */
2731 lpval
= env_vars
[i
].def_value
;
2732 dwType
= REG_EXPAND_SZ
;
2738 lpval
= env_vars
[i
].def_value
;
2739 dwType
= REG_EXPAND_SZ
;
2741 if (strcmp (env_vars
[i
].name
, "HOME") == 0 && !appdata
)
2742 Vdelayed_warnings_list
2743 = Fcons (listn (CONSTYPE_HEAP
, 2,
2744 intern ("initialization"),
2745 build_string ("Setting HOME to C:\\ by default is deprecated")),
2746 Vdelayed_warnings_list
);
2751 char buf1
[SET_ENV_BUF_SIZE
], buf2
[SET_ENV_BUF_SIZE
];
2753 if (dwType
== REG_EXPAND_SZ
)
2754 ExpandEnvironmentStrings ((LPSTR
) lpval
, buf1
, sizeof (buf1
));
2755 else if (dwType
== REG_SZ
)
2756 strcpy (buf1
, lpval
);
2757 if (dwType
== REG_EXPAND_SZ
|| dwType
== REG_SZ
)
2759 _snprintf (buf2
, sizeof (buf2
)-1, "%s=%s", env_vars
[i
].name
,
2761 _putenv (strdup (buf2
));
2771 /* Rebuild system configuration to reflect invoking system. */
2772 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2774 /* Another special case: on NT, the PATH variable is actually named
2775 "Path" although cmd.exe (perhaps NT itself) arranges for
2776 environment variable lookup and setting to be case insensitive.
2777 However, Emacs assumes a fully case sensitive environment, so we
2778 need to change "Path" to "PATH" to match the expectations of
2779 various elisp packages. We do this by the sneaky method of
2780 modifying the string in the C runtime environ entry.
2782 The same applies to COMSPEC. */
2786 for (envp
= environ
; *envp
; envp
++)
2787 if (_strnicmp (*envp
, "PATH=", 5) == 0)
2788 memcpy (*envp
, "PATH=", 5);
2789 else if (_strnicmp (*envp
, "COMSPEC=", 8) == 0)
2790 memcpy (*envp
, "COMSPEC=", 8);
2793 /* Remember the initial working directory for getcwd. */
2794 /* FIXME: Do we need to resolve possible symlinks in startup_dir?
2795 Does it matter anywhere in Emacs? */
2796 if (w32_unicode_filenames
)
2798 wchar_t wstartup_dir
[MAX_PATH
];
2800 if (!GetCurrentDirectoryW (MAX_PATH
, wstartup_dir
))
2802 filename_from_utf16 (wstartup_dir
, startup_dir
);
2806 char astartup_dir
[MAX_PATH
];
2808 if (!GetCurrentDirectoryA (MAX_PATH
, astartup_dir
))
2810 filename_from_ansi (astartup_dir
, startup_dir
);
2814 static char modname
[MAX_PATH
];
2816 if (!GetModuleFileNameA (NULL
, modname
, MAX_PATH
))
2821 /* Determine if there is a middle mouse button, to allow parse_button
2822 to decide whether right mouse events should be mouse-2 or
2824 w32_num_mouse_buttons
= GetSystemMetrics (SM_CMOUSEBUTTONS
);
2829 /* Called from expand-file-name when default-directory is not a string. */
2832 emacs_root_dir (void)
2834 static char root_dir
[MAX_UTF8_PATH
];
2837 p
= getenv ("emacs_dir");
2840 filename_from_ansi (p
, root_dir
);
2841 root_dir
[parse_root (root_dir
, NULL
)] = '\0';
2842 dostounix_filename (root_dir
);
2846 #include <sys/timeb.h>
2848 /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */
2850 gettimeofday (struct timeval
*__restrict tv
, struct timezone
*__restrict tz
)
2855 tv
->tv_sec
= tb
.time
;
2856 tv
->tv_usec
= tb
.millitm
* 1000L;
2857 /* Implementation note: _ftime sometimes doesn't update the dstflag
2858 according to the new timezone when the system timezone is
2859 changed. We could fix that by using GetSystemTime and
2860 GetTimeZoneInformation, but that doesn't seem necessary, since
2861 Emacs always calls gettimeofday with the 2nd argument NULL (see
2862 current_emacs_time). */
2865 tz
->tz_minuteswest
= tb
.timezone
; /* minutes west of Greenwich */
2866 tz
->tz_dsttime
= tb
.dstflag
; /* type of dst correction */
2871 /* Emulate fdutimens. */
2873 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2874 TIMESPEC[0] and TIMESPEC[1], respectively.
2875 FD must be either negative -- in which case it is ignored --
2876 or a file descriptor that is open on FILE.
2877 If FD is nonnegative, then FILE can be NULL, which means
2878 use just futimes instead of utimes.
2879 If TIMESPEC is null, FAIL.
2880 Return 0 on success, -1 (setting errno) on failure. */
2883 fdutimens (int fd
, char const *file
, struct timespec
const timespec
[2])
2890 if (fd
< 0 && !file
)
2895 /* _futime's prototype defines 2nd arg as having the type 'struct
2896 _utimbuf', while utime needs to accept 'struct utimbuf' for
2897 compatibility with Posix. So we need to use 2 different (but
2898 equivalent) types to avoid compiler warnings, sigh. */
2901 struct _utimbuf _ut
;
2903 _ut
.actime
= timespec
[0].tv_sec
;
2904 _ut
.modtime
= timespec
[1].tv_sec
;
2905 return _futime (fd
, &_ut
);
2911 ut
.actime
= timespec
[0].tv_sec
;
2912 ut
.modtime
= timespec
[1].tv_sec
;
2913 /* Call 'utime', which is implemented below, not the MS library
2914 function, which fails on directories. */
2915 return utime (file
, &ut
);
2920 /* ------------------------------------------------------------------------- */
2921 /* IO support and wrapper functions for the Windows API. */
2922 /* ------------------------------------------------------------------------- */
2924 /* Place a wrapper around the MSVC version of ctime. It returns NULL
2925 on network directories, so we handle that case here.
2926 (Ulrich Leodolter, 1/11/95). */
2928 sys_ctime (const time_t *t
)
2930 char *str
= (char *) ctime (t
);
2931 return (str
? str
: "Sun Jan 01 00:00:00 1970");
2934 /* Emulate sleep...we could have done this with a define, but that
2935 would necessitate including windows.h in the files that used it.
2936 This is much easier. */
2938 sys_sleep (int seconds
)
2940 Sleep (seconds
* 1000);
2943 /* Internal MSVC functions for low-level descriptor munging */
2944 extern int __cdecl
_set_osfhnd (int fd
, long h
);
2945 extern int __cdecl
_free_osfhnd (int fd
);
2947 /* parallel array of private info on file handles */
2948 filedesc fd_info
[ MAXDESC
];
2950 typedef struct volume_info_data
{
2951 struct volume_info_data
* next
;
2953 /* time when info was obtained */
2956 /* actual volume info */
2965 /* Global referenced by various functions. */
2966 static volume_info_data volume_info
;
2968 /* Vector to indicate which drives are local and fixed (for which cached
2969 data never expires). */
2970 static BOOL fixed_drives
[26];
2972 /* Consider cached volume information to be stale if older than 10s,
2973 at least for non-local drives. Info for fixed drives is never stale. */
2974 #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' )
2975 #define VOLINFO_STILL_VALID( root_dir, info ) \
2976 ( ( isalpha (root_dir[0]) && \
2977 fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \
2978 || GetTickCount () - info->timestamp < 10000 )
2980 /* Cache support functions. */
2982 /* Simple linked list with linear search is sufficient. */
2983 static volume_info_data
*volume_cache
= NULL
;
2985 static volume_info_data
*
2986 lookup_volume_info (char * root_dir
)
2988 volume_info_data
* info
;
2990 for (info
= volume_cache
; info
; info
= info
->next
)
2991 if (xstrcasecmp (info
->root_dir
, root_dir
) == 0)
2997 add_volume_info (char * root_dir
, volume_info_data
* info
)
2999 info
->root_dir
= xstrdup (root_dir
);
3000 unixtodos_filename (info
->root_dir
);
3001 info
->next
= volume_cache
;
3002 volume_cache
= info
;
3006 /* Wrapper for GetVolumeInformation, which uses caching to avoid
3007 performance penalty (~2ms on 486 for local drives, 7.5ms for local
3008 cdrom drive, ~5-10ms or more for remote drives on LAN). */
3009 static volume_info_data
*
3010 GetCachedVolumeInformation (char * root_dir
)
3012 volume_info_data
* info
;
3013 char default_root
[ MAX_UTF8_PATH
];
3014 char name
[MAX_PATH
+1];
3015 char type
[MAX_PATH
+1];
3017 /* NULL for root_dir means use root from current directory. */
3018 if (root_dir
== NULL
)
3020 if (w32_unicode_filenames
)
3022 wchar_t curdirw
[MAX_PATH
];
3024 if (GetCurrentDirectoryW (MAX_PATH
, curdirw
) == 0)
3026 filename_from_utf16 (curdirw
, default_root
);
3030 char curdira
[MAX_PATH
];
3032 if (GetCurrentDirectoryA (MAX_PATH
, curdira
) == 0)
3034 filename_from_ansi (curdira
, default_root
);
3036 parse_root (default_root
, (const char **)&root_dir
);
3038 root_dir
= default_root
;
3041 /* Local fixed drives can be cached permanently. Removable drives
3042 cannot be cached permanently, since the volume name and serial
3043 number (if nothing else) can change. Remote drives should be
3044 treated as if they are removable, since there is no sure way to
3045 tell whether they are or not. Also, the UNC association of drive
3046 letters mapped to remote volumes can be changed at any time (even
3047 by other processes) without notice.
3049 As a compromise, so we can benefit from caching info for remote
3050 volumes, we use a simple expiry mechanism to invalidate cache
3051 entries that are more than ten seconds old. */
3054 /* No point doing this, because WNetGetConnection is even slower than
3055 GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW,
3056 GetDriveType is about the only call of this type which does not
3057 involve network access, and so is extremely quick). */
3059 /* Map drive letter to UNC if remote. */
3060 if (isalpha (root_dir
[0]) && !fixed
[DRIVE_INDEX (root_dir
[0])])
3062 char remote_name
[ 256 ];
3063 char drive
[3] = { root_dir
[0], ':' };
3065 if (WNetGetConnection (drive
, remote_name
, sizeof (remote_name
))
3067 /* do something */ ;
3071 info
= lookup_volume_info (root_dir
);
3073 if (info
== NULL
|| ! VOLINFO_STILL_VALID (root_dir
, info
))
3079 /* Info is not cached, or is stale. */
3080 if (w32_unicode_filenames
)
3082 wchar_t root_w
[MAX_PATH
];
3083 wchar_t name_w
[MAX_PATH
+1];
3084 wchar_t type_w
[MAX_PATH
+1];
3086 filename_to_utf16 (root_dir
, root_w
);
3087 if (!GetVolumeInformationW (root_w
,
3088 name_w
, sizeof (name_w
),
3092 type_w
, sizeof (type_w
)))
3094 /* Hmm... not really 100% correct, as these 2 are not file
3096 filename_from_utf16 (name_w
, name
);
3097 filename_from_utf16 (type_w
, type
);
3101 char root_a
[MAX_PATH
];
3102 char name_a
[MAX_PATH
+1];
3103 char type_a
[MAX_PATH
+1];
3105 filename_to_ansi (root_dir
, root_a
);
3106 if (!GetVolumeInformationA (root_a
,
3107 name_a
, sizeof (name_a
),
3111 type_a
, sizeof (type_a
)))
3113 filename_from_ansi (name_a
, name
);
3114 filename_from_ansi (type_a
, type
);
3117 /* Cache the volume information for future use, overwriting existing
3118 entry if present. */
3121 info
= xmalloc (sizeof (volume_info_data
));
3122 add_volume_info (root_dir
, info
);
3130 info
->name
= xstrdup (name
);
3131 unixtodos_filename (info
->name
);
3132 info
->serialnum
= serialnum
;
3133 info
->maxcomp
= maxcomp
;
3134 info
->flags
= flags
;
3135 info
->type
= xstrdup (type
);
3136 info
->timestamp
= GetTickCount ();
3142 /* Get information on the volume where NAME is held; set path pointer to
3143 start of pathname in NAME (past UNC header\volume header if present),
3144 if pPath is non-NULL.
3146 Note: if NAME includes symlinks, the information is for the volume
3147 of the symlink, not of its target. That's because, even though
3148 GetVolumeInformation returns information about the symlink target
3149 of its argument, we only pass the root directory to
3150 GetVolumeInformation, not the full NAME. */
3152 get_volume_info (const char * name
, const char ** pPath
)
3154 char temp
[MAX_UTF8_PATH
];
3155 char *rootname
= NULL
; /* default to current volume */
3156 volume_info_data
* info
;
3157 int root_len
= parse_root (name
, pPath
);
3162 /* Copy the root name of the volume, if given. */
3165 strncpy (temp
, name
, root_len
);
3166 temp
[root_len
] = '\0';
3167 unixtodos_filename (temp
);
3171 info
= GetCachedVolumeInformation (rootname
);
3174 /* Set global referenced by other functions. */
3175 volume_info
= *info
;
3181 /* Determine if volume is FAT format (ie. only supports short 8.3
3182 names); also set path pointer to start of pathname in name, if
3183 pPath is non-NULL. */
3185 is_fat_volume (const char * name
, const char ** pPath
)
3187 if (get_volume_info (name
, pPath
))
3188 return (volume_info
.maxcomp
== 12);
3192 /* Convert all slashes in a filename to backslashes, and map filename
3193 to a valid 8.3 name if necessary. The result is a pointer to a
3194 static buffer, so CAVEAT EMPTOR! */
3196 map_w32_filename (const char * name
, const char ** pPath
)
3198 static char shortname
[MAX_UTF8_PATH
];
3199 char * str
= shortname
;
3202 const char * save_name
= name
;
3204 if (strlen (name
) >= sizeof (shortname
))
3206 /* Return a filename which will cause callers to fail. */
3207 strcpy (shortname
, "?");
3211 if (is_fat_volume (name
, (const char **)&path
)) /* truncate to 8.3 */
3213 register int left
= 8; /* maximum number of chars in part */
3214 register int extn
= 0; /* extension added? */
3215 register int dots
= 2; /* maximum number of dots allowed */
3218 *str
++ = *name
++; /* skip past UNC header */
3220 while ((c
= *name
++))
3227 *str
++ = (c
== ':' ? ':' : '\\');
3228 extn
= 0; /* reset extension flags */
3229 dots
= 2; /* max 2 dots */
3230 left
= 8; /* max length 8 for main part */
3235 /* Convert path components of the form .xxx to _xxx,
3236 but leave . and .. as they are. This allows .emacs
3237 to be read as _emacs, for example. */
3241 IS_DIRECTORY_SEP (*name
))
3256 extn
= 1; /* we've got an extension */
3257 left
= 3; /* 3 chars in extension */
3261 /* any embedded dots after the first are converted to _ */
3266 case '#': /* don't lose these, they're important */
3268 str
[-1] = c
; /* replace last character of part */
3271 if ( left
&& 'A' <= c
&& c
<= 'Z' )
3273 *str
++ = tolower (c
); /* map to lower case (looks nicer) */
3275 dots
= 0; /* started a path component */
3284 strcpy (shortname
, name
);
3285 unixtodos_filename (shortname
);
3289 *pPath
= shortname
+ (path
- save_name
);
3295 is_exec (const char * name
)
3297 char * p
= strrchr (name
, '.');
3300 && (xstrcasecmp (p
, ".exe") == 0 ||
3301 xstrcasecmp (p
, ".com") == 0 ||
3302 xstrcasecmp (p
, ".bat") == 0 ||
3303 xstrcasecmp (p
, ".cmd") == 0));
3306 /* Emulate the Unix directory procedures opendir, closedir, and
3307 readdir. We rename them to sys_* names because some versions of
3308 MinGW startup code call opendir and readdir to glob wildcards, and
3309 the code that calls them doesn't grok UTF-8 encoded file names we
3310 produce in dirent->d_name[]. */
3312 struct dirent dir_static
; /* simulated directory contents */
3313 static HANDLE dir_find_handle
= INVALID_HANDLE_VALUE
;
3314 static int dir_is_fat
;
3315 static char dir_pathname
[MAX_UTF8_PATH
];
3316 static WIN32_FIND_DATAW dir_find_data_w
;
3317 static WIN32_FIND_DATAA dir_find_data_a
;
3318 #define DIR_FIND_DATA_W 1
3319 #define DIR_FIND_DATA_A 2
3320 static int last_dir_find_data
= -1;
3322 /* Support shares on a network resource as subdirectories of a read-only
3324 static HANDLE wnet_enum_handle
= INVALID_HANDLE_VALUE
;
3325 static HANDLE
open_unc_volume (const char *);
3326 static void *read_unc_volume (HANDLE
, wchar_t *, char *, int);
3327 static void close_unc_volume (HANDLE
);
3330 sys_opendir (const char *filename
)
3334 /* Opening is done by FindFirstFile. However, a read is inherent to
3335 this operation, so we defer the open until read time. */
3337 if (dir_find_handle
!= INVALID_HANDLE_VALUE
)
3339 if (wnet_enum_handle
!= INVALID_HANDLE_VALUE
)
3342 /* Note: We don't support traversal of UNC volumes via symlinks.
3343 Doing so would mean punishing 99.99% of use cases by resolving
3344 all the possible symlinks in FILENAME, recursively. */
3345 if (is_unc_volume (filename
))
3347 wnet_enum_handle
= open_unc_volume (filename
);
3348 if (wnet_enum_handle
== INVALID_HANDLE_VALUE
)
3352 if (!(dirp
= (DIR *) malloc (sizeof (DIR))))
3359 strncpy (dir_pathname
, map_w32_filename (filename
, NULL
), MAX_UTF8_PATH
- 1);
3360 dir_pathname
[MAX_UTF8_PATH
- 1] = '\0';
3361 /* Note: We don't support symlinks to file names on FAT volumes.
3362 Doing so would mean punishing 99.99% of use cases by resolving
3363 all the possible symlinks in FILENAME, recursively. */
3364 dir_is_fat
= is_fat_volume (filename
, NULL
);
3370 sys_closedir (DIR *dirp
)
3372 /* If we have a find-handle open, close it. */
3373 if (dir_find_handle
!= INVALID_HANDLE_VALUE
)
3375 FindClose (dir_find_handle
);
3376 dir_find_handle
= INVALID_HANDLE_VALUE
;
3378 else if (wnet_enum_handle
!= INVALID_HANDLE_VALUE
)
3380 close_unc_volume (wnet_enum_handle
);
3381 wnet_enum_handle
= INVALID_HANDLE_VALUE
;
3383 xfree ((char *) dirp
);
3387 sys_readdir (DIR *dirp
)
3389 int downcase
= !NILP (Vw32_downcase_file_names
);
3391 if (wnet_enum_handle
!= INVALID_HANDLE_VALUE
)
3393 if (!read_unc_volume (wnet_enum_handle
,
3394 dir_find_data_w
.cFileName
,
3395 dir_find_data_a
.cFileName
,
3399 /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */
3400 else if (dir_find_handle
== INVALID_HANDLE_VALUE
)
3402 char filename
[MAX_UTF8_PATH
+ 2];
3405 strcpy (filename
, dir_pathname
);
3406 ln
= strlen (filename
);
3407 if (!IS_DIRECTORY_SEP (filename
[ln
- 1]))
3408 filename
[ln
++] = '\\';
3409 strcpy (filename
+ ln
, "*");
3411 /* Note: No need to resolve symlinks in FILENAME, because
3412 FindFirst opens the directory that is the target of a
3414 if (w32_unicode_filenames
)
3416 wchar_t fnw
[MAX_PATH
];
3418 filename_to_utf16 (filename
, fnw
);
3419 dir_find_handle
= FindFirstFileW (fnw
, &dir_find_data_w
);
3425 filename_to_ansi (filename
, fna
);
3426 /* If FILENAME is not representable by the current ANSI
3427 codepage, we don't want FindFirstFileA to interpret the
3428 '?' characters as a wildcard. */
3429 if (_mbspbrk (fna
, "?"))
3430 dir_find_handle
= INVALID_HANDLE_VALUE
;
3432 dir_find_handle
= FindFirstFileA (fna
, &dir_find_data_a
);
3435 if (dir_find_handle
== INVALID_HANDLE_VALUE
)
3437 /* Any changes in the value of errno here should be in sync
3438 with what directory_files_internal does when it calls
3440 switch (GetLastError ())
3442 /* Windows uses this value when FindFirstFile finds no
3443 files that match the wildcard. This is not supposed
3444 to happen, since our wildcard is "*", but just in
3445 case, if there's some weird empty directory with not
3446 even "." and ".." entries... */
3447 case ERROR_FILE_NOT_FOUND
:
3452 case ERROR_ACCESS_DENIED
:
3453 case ERROR_NETWORK_ACCESS_DENIED
:
3456 case ERROR_PATH_NOT_FOUND
:
3457 case ERROR_INVALID_DRIVE
:
3458 case ERROR_NOT_READY
:
3459 case ERROR_BAD_NETPATH
:
3460 case ERROR_BAD_NET_NAME
:
3467 else if (w32_unicode_filenames
)
3469 if (!FindNextFileW (dir_find_handle
, &dir_find_data_w
))
3477 if (!FindNextFileA (dir_find_handle
, &dir_find_data_a
))
3484 /* Emacs never uses this value, so don't bother making it match
3485 value returned by stat(). */
3486 dir_static
.d_ino
= 1;
3488 if (w32_unicode_filenames
)
3490 if (downcase
|| dir_is_fat
)
3492 wchar_t tem
[MAX_PATH
];
3494 wcscpy (tem
, dir_find_data_w
.cFileName
);
3496 filename_from_utf16 (tem
, dir_static
.d_name
);
3499 filename_from_utf16 (dir_find_data_w
.cFileName
, dir_static
.d_name
);
3500 last_dir_find_data
= DIR_FIND_DATA_W
;
3506 /* If the file name in cFileName[] includes `?' characters, it
3507 means the original file name used characters that cannot be
3508 represented by the current ANSI codepage. To avoid total
3509 lossage, retrieve the short 8+3 alias of the long file
3511 if (_mbspbrk (dir_find_data_a
.cFileName
, "?"))
3513 strcpy (tem
, dir_find_data_a
.cAlternateFileName
);
3514 /* 8+3 aliases are returned in all caps, which could break
3515 various alists that look at filenames' extensions. */
3518 else if (downcase
|| dir_is_fat
)
3519 strcpy (tem
, dir_find_data_a
.cFileName
);
3521 filename_from_ansi (dir_find_data_a
.cFileName
, dir_static
.d_name
);
3522 if (downcase
|| dir_is_fat
)
3525 filename_from_ansi (tem
, dir_static
.d_name
);
3527 last_dir_find_data
= DIR_FIND_DATA_A
;
3530 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3531 dir_static
.d_reclen
= sizeof (struct dirent
) - MAX_UTF8_PATH
+ 3 +
3532 dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3538 open_unc_volume (const char *path
)
3540 const char *fn
= map_w32_filename (path
, NULL
);
3544 if (w32_unicode_filenames
)
3547 wchar_t fnw
[MAX_PATH
];
3549 nrw
.dwScope
= RESOURCE_GLOBALNET
;
3550 nrw
.dwType
= RESOURCETYPE_DISK
;
3551 nrw
.dwDisplayType
= RESOURCEDISPLAYTYPE_SERVER
;
3552 nrw
.dwUsage
= RESOURCEUSAGE_CONTAINER
;
3553 nrw
.lpLocalName
= NULL
;
3554 filename_to_utf16 (fn
, fnw
);
3555 nrw
.lpRemoteName
= fnw
;
3556 nrw
.lpComment
= NULL
;
3557 nrw
.lpProvider
= NULL
;
3559 result
= WNetOpenEnumW (RESOURCE_GLOBALNET
, RESOURCETYPE_DISK
,
3560 RESOURCEUSAGE_CONNECTABLE
, &nrw
, &henum
);
3567 nra
.dwScope
= RESOURCE_GLOBALNET
;
3568 nra
.dwType
= RESOURCETYPE_DISK
;
3569 nra
.dwDisplayType
= RESOURCEDISPLAYTYPE_SERVER
;
3570 nra
.dwUsage
= RESOURCEUSAGE_CONTAINER
;
3571 nra
.lpLocalName
= NULL
;
3572 filename_to_ansi (fn
, fna
);
3573 nra
.lpRemoteName
= fna
;
3574 nra
.lpComment
= NULL
;
3575 nra
.lpProvider
= NULL
;
3577 result
= WNetOpenEnumA (RESOURCE_GLOBALNET
, RESOURCETYPE_DISK
,
3578 RESOURCEUSAGE_CONNECTABLE
, &nra
, &henum
);
3580 if (result
== NO_ERROR
)
3584 /* Make sure directory_files_internal reports a sensible error. */
3586 return INVALID_HANDLE_VALUE
;
3591 read_unc_volume (HANDLE henum
, wchar_t *fname_w
, char *fname_a
, int size
)
3596 DWORD bufsize
= 512;
3600 if (w32_unicode_filenames
)
3605 buffer
= alloca (bufsize
);
3606 result
= WNetEnumResourceW (henum
, &count
, buffer
, &bufsize
);
3607 if (result
!= NO_ERROR
)
3609 /* WNetEnumResource returns \\resource\share...skip forward to "share". */
3610 ptrw
= ((LPNETRESOURCEW
) buffer
)->lpRemoteName
;
3612 while (*ptrw
&& *ptrw
!= L
'/' && *ptrw
!= L
'\\') ptrw
++;
3614 wcsncpy (fname_w
, ptrw
, size
);
3619 int dbcs_p
= max_filename_mbslen () > 1;
3622 buffer
= alloca (bufsize
);
3623 result
= WNetEnumResourceA (henum
, &count
, buffer
, &bufsize
);
3624 if (result
!= NO_ERROR
)
3626 ptra
= ((LPNETRESOURCEA
) buffer
)->lpRemoteName
;
3629 while (*ptra
&& !IS_DIRECTORY_SEP (*ptra
)) ptra
++;
3632 while (*ptra
&& !IS_DIRECTORY_SEP (*ptra
))
3633 ptra
= CharNextExA (file_name_codepage
, ptra
, 0);
3636 strncpy (fname_a
, ptra
, size
);
3644 close_unc_volume (HANDLE henum
)
3646 if (henum
!= INVALID_HANDLE_VALUE
)
3647 WNetCloseEnum (henum
);
3651 unc_volume_file_attributes (const char *path
)
3656 henum
= open_unc_volume (path
);
3657 if (henum
== INVALID_HANDLE_VALUE
)
3660 attrs
= FILE_ATTRIBUTE_READONLY
| FILE_ATTRIBUTE_DIRECTORY
;
3662 close_unc_volume (henum
);
3667 /* Ensure a network connection is authenticated. */
3669 logon_network_drive (const char *path
)
3671 char share
[MAX_UTF8_PATH
];
3678 if (IS_DIRECTORY_SEP (path
[0]) && IS_DIRECTORY_SEP (path
[1]))
3679 drvtype
= DRIVE_REMOTE
;
3680 else if (path
[0] == '\0' || path
[1] != ':')
3681 drvtype
= GetDriveType (NULL
);
3688 drvtype
= GetDriveType (drive
);
3691 /* Only logon to networked drives. */
3692 if (drvtype
!= DRIVE_REMOTE
)
3696 strncpy (share
, path
, MAX_UTF8_PATH
);
3697 /* Truncate to just server and share name. */
3698 for (p
= share
+ 2; *p
&& p
< share
+ MAX_UTF8_PATH
; p
++)
3700 if (IS_DIRECTORY_SEP (*p
) && ++n_slashes
> 3)
3707 if (w32_unicode_filenames
)
3709 NETRESOURCEW resourcew
;
3710 wchar_t share_w
[MAX_PATH
];
3712 resourcew
.dwScope
= RESOURCE_GLOBALNET
;
3713 resourcew
.dwType
= RESOURCETYPE_DISK
;
3714 resourcew
.dwDisplayType
= RESOURCEDISPLAYTYPE_SHARE
;
3715 resourcew
.dwUsage
= RESOURCEUSAGE_CONTAINER
;
3716 resourcew
.lpLocalName
= NULL
;
3717 filename_to_utf16 (share
, share_w
);
3718 resourcew
.lpRemoteName
= share_w
;
3719 resourcew
.lpProvider
= NULL
;
3721 val
= WNetAddConnection2W (&resourcew
, NULL
, NULL
, CONNECT_INTERACTIVE
);
3725 NETRESOURCEA resourcea
;
3726 char share_a
[MAX_PATH
];
3728 resourcea
.dwScope
= RESOURCE_GLOBALNET
;
3729 resourcea
.dwType
= RESOURCETYPE_DISK
;
3730 resourcea
.dwDisplayType
= RESOURCEDISPLAYTYPE_SHARE
;
3731 resourcea
.dwUsage
= RESOURCEUSAGE_CONTAINER
;
3732 resourcea
.lpLocalName
= NULL
;
3733 filename_to_ansi (share
, share_a
);
3734 resourcea
.lpRemoteName
= share_a
;
3735 resourcea
.lpProvider
= NULL
;
3737 val
= WNetAddConnection2A (&resourcea
, NULL
, NULL
, CONNECT_INTERACTIVE
);
3743 case ERROR_ALREADY_ASSIGNED
:
3745 case ERROR_ACCESS_DENIED
:
3746 case ERROR_LOGON_FAILURE
:
3752 case ERROR_BAD_NET_NAME
:
3753 case ERROR_NO_NET_OR_BAD_PATH
:
3754 case ERROR_NO_NETWORK
:
3755 case ERROR_CANCELLED
:
3762 /* Emulate faccessat(2). */
3764 faccessat (int dirfd
, const char * path
, int mode
, int flags
)
3768 if (dirfd
!= AT_FDCWD
3769 && !(IS_DIRECTORY_SEP (path
[0])
3770 || IS_DEVICE_SEP (path
[1])))
3776 /* MSVCRT implementation of 'access' doesn't recognize D_OK, and its
3777 newer versions blow up when passed D_OK. */
3778 path
= map_w32_filename (path
, NULL
);
3779 /* If the last element of PATH is a symlink, we need to resolve it
3780 to get the attributes of its target file. Note: any symlinks in
3781 PATH elements other than the last one are transparently resolved
3782 by GetFileAttributes below. */
3783 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) != 0
3784 && (flags
& AT_SYMLINK_NOFOLLOW
) == 0)
3785 path
= chase_symlinks (path
);
3787 if (w32_unicode_filenames
)
3789 wchar_t path_w
[MAX_PATH
];
3791 filename_to_utf16 (path
, path_w
);
3792 attributes
= GetFileAttributesW (path_w
);
3796 char path_a
[MAX_PATH
];
3798 filename_to_ansi (path
, path_a
);
3799 attributes
= GetFileAttributesA (path_a
);
3802 if (attributes
== -1)
3804 DWORD w32err
= GetLastError ();
3808 case ERROR_INVALID_NAME
:
3809 case ERROR_BAD_PATHNAME
:
3810 if (is_unc_volume (path
))
3812 attributes
= unc_volume_file_attributes (path
);
3813 if (attributes
== -1)
3821 case ERROR_FILE_NOT_FOUND
:
3822 case ERROR_BAD_NETPATH
:
3831 if ((mode
& X_OK
) != 0
3832 && !(is_exec (path
) || (attributes
& FILE_ATTRIBUTE_DIRECTORY
) != 0))
3837 if ((mode
& W_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_READONLY
) != 0)
3842 if ((mode
& D_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
) == 0)
3850 /* A special test for DIRNAME being a directory accessible by the
3851 current user. This is needed because the security permissions in
3852 directory's ACLs are not visible in the Posix-style mode bits
3853 returned by 'stat' and in attributes returned by GetFileAttributes.
3854 So a directory would seem like it's readable by the current user,
3855 but will in fact error out with EACCES when they actually try. */
3857 w32_accessible_directory_p (const char *dirname
, ptrdiff_t dirlen
)
3859 char pattern
[MAX_UTF8_PATH
];
3860 bool last_slash
= dirlen
> 0 && IS_DIRECTORY_SEP (dirname
[dirlen
- 1]);
3863 strcpy (pattern
, map_w32_filename (dirname
, NULL
));
3865 /* Note: No need to resolve symlinks in FILENAME, because FindFirst
3866 opens the directory that is the target of a symlink. */
3867 if (w32_unicode_filenames
)
3869 wchar_t pat_w
[MAX_PATH
+ 2];
3870 WIN32_FIND_DATAW dfd_w
;
3872 filename_to_utf16 (pattern
, pat_w
);
3874 wcscat (pat_w
, L
"\\");
3875 wcscat (pat_w
, L
"*");
3876 dh
= FindFirstFileW (pat_w
, &dfd_w
);
3880 char pat_a
[MAX_PATH
+ 2];
3881 WIN32_FIND_DATAA dfd_a
;
3883 filename_to_ansi (pattern
, pat_a
);
3885 strcpy (pat_a
, "\\");
3886 strcat (pat_a
, "*");
3887 /* In case DIRNAME cannot be expressed in characters from the
3888 current ANSI codepage. */
3889 if (_mbspbrk (pat_a
, "?"))
3890 dh
= INVALID_HANDLE_VALUE
;
3892 dh
= FindFirstFileA (pat_a
, &dfd_a
);
3895 if (dh
== INVALID_HANDLE_VALUE
)
3901 /* A version of 'access' to be used locally with file names in
3902 locale-specific encoding. Does not resolve symlinks and does not
3903 support file names on FAT12 and FAT16 volumes, but that's OK, since
3904 we only invoke this function for files inside the Emacs source or
3905 installation tree, on directories (so any symlinks should have the
3906 directory bit set), and on short file names such as "C:/.emacs". */
3908 sys_access (const char *fname
, int mode
)
3910 char fname_copy
[MAX_PATH
], *p
;
3913 strcpy (fname_copy
, fname
);
3914 /* Do the equivalent of unixtodos_filename. */
3915 for (p
= fname_copy
; *p
; p
= CharNext (p
))
3919 if ((attributes
= GetFileAttributesA (fname_copy
)) == -1)
3921 DWORD w32err
= GetLastError ();
3925 case ERROR_INVALID_NAME
:
3926 case ERROR_BAD_PATHNAME
:
3927 case ERROR_FILE_NOT_FOUND
:
3928 case ERROR_BAD_NETPATH
:
3937 if ((mode
& X_OK
) != 0
3938 && !(is_exec (fname_copy
)
3939 || (attributes
& FILE_ATTRIBUTE_DIRECTORY
) != 0))
3944 if ((mode
& W_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_READONLY
) != 0)
3949 if ((mode
& D_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
) == 0)
3957 /* Shadow some MSVC runtime functions to map requests for long filenames
3958 to reasonable short names if necessary. This was originally added to
3959 permit running Emacs on NT 3.1 on a FAT partition, which doesn't support
3963 sys_chdir (const char * path
)
3965 path
= map_w32_filename (path
, NULL
);
3966 if (w32_unicode_filenames
)
3968 wchar_t newdir_w
[MAX_PATH
];
3970 if (filename_to_utf16 (path
, newdir_w
) == 0)
3971 return _wchdir (newdir_w
);
3976 char newdir_a
[MAX_PATH
];
3978 if (filename_to_ansi (path
, newdir_a
) == 0)
3979 return _chdir (newdir_a
);
3985 sys_chmod (const char * path
, int mode
)
3987 path
= chase_symlinks (map_w32_filename (path
, NULL
));
3988 if (w32_unicode_filenames
)
3990 wchar_t path_w
[MAX_PATH
];
3992 filename_to_utf16 (path
, path_w
);
3993 return _wchmod (path_w
, mode
);
3997 char path_a
[MAX_PATH
];
3999 filename_to_ansi (path
, path_a
);
4000 return _chmod (path_a
, mode
);
4005 sys_creat (const char * path
, int mode
)
4007 path
= map_w32_filename (path
, NULL
);
4008 if (w32_unicode_filenames
)
4010 wchar_t path_w
[MAX_PATH
];
4012 filename_to_utf16 (path
, path_w
);
4013 return _wcreat (path_w
, mode
);
4017 char path_a
[MAX_PATH
];
4019 filename_to_ansi (path
, path_a
);
4020 return _creat (path_a
, mode
);
4025 sys_fopen (const char * path
, const char * mode
)
4029 const char * mode_save
= mode
;
4031 /* Force all file handles to be non-inheritable. This is necessary to
4032 ensure child processes don't unwittingly inherit handles that might
4033 prevent future file access. */
4037 else if (mode
[0] == 'w' || mode
[0] == 'a')
4038 oflag
= O_WRONLY
| O_CREAT
| O_TRUNC
;
4042 /* Only do simplistic option parsing. */
4046 oflag
&= ~(O_RDONLY
| O_WRONLY
);
4049 else if (mode
[0] == 'b')
4054 else if (mode
[0] == 't')
4061 path
= map_w32_filename (path
, NULL
);
4062 if (w32_unicode_filenames
)
4064 wchar_t path_w
[MAX_PATH
];
4066 filename_to_utf16 (path
, path_w
);
4067 fd
= _wopen (path_w
, oflag
| _O_NOINHERIT
, 0644);
4071 char path_a
[MAX_PATH
];
4073 filename_to_ansi (path
, path_a
);
4074 fd
= _open (path_a
, oflag
| _O_NOINHERIT
, 0644);
4079 return _fdopen (fd
, mode_save
);
4082 /* This only works on NTFS volumes, but is useful to have. */
4084 sys_link (const char * old
, const char * new)
4088 char oldname
[MAX_UTF8_PATH
], newname
[MAX_UTF8_PATH
];
4089 wchar_t oldname_w
[MAX_PATH
];
4090 char oldname_a
[MAX_PATH
];
4092 if (old
== NULL
|| new == NULL
)
4098 strcpy (oldname
, map_w32_filename (old
, NULL
));
4099 strcpy (newname
, map_w32_filename (new, NULL
));
4101 if (w32_unicode_filenames
)
4103 filename_to_utf16 (oldname
, oldname_w
);
4104 fileh
= CreateFileW (oldname_w
, 0, 0, NULL
, OPEN_EXISTING
,
4105 FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
4109 filename_to_ansi (oldname
, oldname_a
);
4110 fileh
= CreateFileA (oldname_a
, 0, 0, NULL
, OPEN_EXISTING
,
4111 FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
4113 if (fileh
!= INVALID_HANDLE_VALUE
)
4117 /* Confusingly, the "alternate" stream name field does not apply
4118 when restoring a hard link, and instead contains the actual
4119 stream data for the link (ie. the name of the link to create).
4120 The WIN32_STREAM_ID structure before the cStreamName field is
4121 the stream header, which is then immediately followed by the
4125 WIN32_STREAM_ID wid
;
4126 WCHAR wbuffer
[MAX_PATH
]; /* extra space for link name */
4129 /* We used to pass MB_PRECOMPOSED as the 2nd arg here, but MSDN
4130 indicates that flag is unsupported for CP_UTF8, and OTOH says
4131 it is the default anyway. */
4132 wlen
= pMultiByteToWideChar (CP_UTF8
, 0, newname
, -1,
4133 data
.wid
.cStreamName
, MAX_PATH
);
4136 LPVOID context
= NULL
;
4139 data
.wid
.dwStreamId
= BACKUP_LINK
;
4140 data
.wid
.dwStreamAttributes
= 0;
4141 data
.wid
.Size
.LowPart
= wlen
* sizeof (WCHAR
);
4142 data
.wid
.Size
.HighPart
= 0;
4143 data
.wid
.dwStreamNameSize
= 0;
4145 if (BackupWrite (fileh
, (LPBYTE
)&data
,
4146 offsetof (WIN32_STREAM_ID
, cStreamName
)
4147 + data
.wid
.Size
.LowPart
,
4148 &wbytes
, FALSE
, FALSE
, &context
)
4149 && BackupWrite (fileh
, NULL
, 0, &wbytes
, TRUE
, FALSE
, &context
))
4156 DWORD err
= GetLastError ();
4161 case ERROR_ACCESS_DENIED
:
4162 /* This is what happens when OLDNAME is a directory,
4163 since Windows doesn't support hard links to
4164 directories. Posix says to set errno to EPERM in
4166 if (w32_unicode_filenames
)
4167 attributes
= GetFileAttributesW (oldname_w
);
4169 attributes
= GetFileAttributesA (oldname_a
);
4170 if (attributes
!= -1
4171 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
) != 0)
4173 else if (attributes
== -1
4174 && is_unc_volume (oldname
)
4175 && unc_volume_file_attributes (oldname
) != -1)
4180 case ERROR_TOO_MANY_LINKS
:
4183 case ERROR_NOT_SAME_DEVICE
:
4193 CloseHandle (fileh
);
4202 sys_mkdir (const char * path
)
4204 path
= map_w32_filename (path
, NULL
);
4206 if (w32_unicode_filenames
)
4208 wchar_t path_w
[MAX_PATH
];
4210 filename_to_utf16 (path
, path_w
);
4211 return _wmkdir (path_w
);
4215 char path_a
[MAX_PATH
];
4217 filename_to_ansi (path
, path_a
);
4218 return _mkdir (path_a
);
4223 sys_open (const char * path
, int oflag
, int mode
)
4225 const char* mpath
= map_w32_filename (path
, NULL
);
4228 if (w32_unicode_filenames
)
4230 wchar_t mpath_w
[MAX_PATH
];
4232 filename_to_utf16 (mpath
, mpath_w
);
4233 /* If possible, try to open file without _O_CREAT, to be able to
4234 write to existing hidden and system files. Force all file
4235 handles to be non-inheritable. */
4236 if ((oflag
& (_O_CREAT
| _O_EXCL
)) != (_O_CREAT
| _O_EXCL
))
4237 res
= _wopen (mpath_w
, (oflag
& ~_O_CREAT
) | _O_NOINHERIT
, mode
);
4239 res
= _wopen (mpath_w
, oflag
| _O_NOINHERIT
, mode
);
4243 char mpath_a
[MAX_PATH
];
4245 filename_to_ansi (mpath
, mpath_a
);
4246 if ((oflag
& (_O_CREAT
| _O_EXCL
)) != (_O_CREAT
| _O_EXCL
))
4247 res
= _open (mpath_a
, (oflag
& ~_O_CREAT
) | _O_NOINHERIT
, mode
);
4249 res
= _open (mpath_a
, oflag
| _O_NOINHERIT
, mode
);
4255 /* Implementation of mkostemp for MS-Windows, to avoid race conditions
4258 Standard algorithm for generating a temporary file name seems to be
4259 use pid or tid with a letter on the front (in place of the 6 X's)
4260 and cycle through the letters to find a unique name. We extend
4261 that to allow any reasonable character as the first of the 6 X's,
4262 so that the number of simultaneously used temporary files will be
4266 mkostemp (char * template, int flags
)
4270 unsigned uid
= GetCurrentThreadId ();
4271 int save_errno
= errno
;
4272 static char first_char
[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#";
4275 if (template == NULL
)
4278 p
= template + strlen (template);
4280 /* replace up to the last 5 X's with uid in decimal */
4281 while (--p
>= template && p
[0] == 'X' && --i
>= 0)
4283 p
[0] = '0' + uid
% 10;
4287 if (i
< 0 && p
[0] == 'X')
4292 p
[0] = first_char
[i
];
4293 if ((fd
= sys_open (template,
4294 flags
| _O_CREAT
| _O_EXCL
| _O_RDWR
,
4295 S_IRUSR
| S_IWUSR
)) >= 0
4303 while (++i
< sizeof (first_char
));
4306 /* Template is badly formed or else we can't generate a unique name. */
4311 fchmod (int fd
, mode_t mode
)
4317 sys_rename_replace (const char *oldname
, const char *newname
, BOOL force
)
4320 char temp
[MAX_UTF8_PATH
], temp_a
[MAX_PATH
];;
4323 bool have_temp_a
= false;
4325 /* MoveFile on Windows 95 doesn't correctly change the short file name
4326 alias in a number of circumstances (it is not easy to predict when
4327 just by looking at oldname and newname, unfortunately). In these
4328 cases, renaming through a temporary name avoids the problem.
4330 A second problem on Windows 95 is that renaming through a temp name when
4331 newname is uppercase fails (the final long name ends up in
4332 lowercase, although the short alias might be uppercase) UNLESS the
4333 long temp name is not 8.3.
4335 So, on Windows 95 we always rename through a temp name, and we make sure
4336 the temp name has a long extension to ensure correct renaming. */
4338 strcpy (temp
, map_w32_filename (oldname
, NULL
));
4340 /* volume_info is set indirectly by map_w32_filename. */
4341 oldname_dev
= volume_info
.serialnum
;
4343 if (os_subtype
== OS_9X
)
4348 char oldname_a
[MAX_PATH
];
4350 oldname
= map_w32_filename (oldname
, NULL
);
4351 filename_to_ansi (oldname
, oldname_a
);
4352 filename_to_ansi (temp
, temp_a
);
4353 if ((o
= strrchr (oldname_a
, '\\')))
4356 o
= (char *) oldname_a
;
4358 if ((p
= strrchr (temp_a
, '\\')))
4365 /* Force temp name to require a manufactured 8.3 alias - this
4366 seems to make the second rename work properly. */
4367 sprintf (p
, "_.%s.%u", o
, i
);
4369 result
= rename (oldname_a
, temp_a
);
4371 /* This loop must surely terminate! */
4372 while (result
< 0 && errno
== EEXIST
);
4378 /* If FORCE, emulate Unix behavior - newname is deleted if it already exists
4379 (at least if it is a file; don't do this for directories).
4381 Since we mustn't do this if we are just changing the case of the
4382 file name (we would end up deleting the file we are trying to
4383 rename!), we let rename detect if the destination file already
4384 exists - that way we avoid the possible pitfalls of trying to
4385 determine ourselves whether two names really refer to the same
4386 file, which is not always possible in the general case. (Consider
4387 all the permutations of shared or subst'd drives, etc.) */
4389 newname
= map_w32_filename (newname
, NULL
);
4391 /* volume_info is set indirectly by map_w32_filename. */
4392 newname_dev
= volume_info
.serialnum
;
4394 if (w32_unicode_filenames
)
4396 wchar_t temp_w
[MAX_PATH
], newname_w
[MAX_PATH
];
4398 filename_to_utf16 (temp
, temp_w
);
4399 filename_to_utf16 (newname
, newname_w
);
4400 result
= _wrename (temp_w
, newname_w
);
4401 if (result
< 0 && force
)
4403 DWORD w32err
= GetLastError ();
4406 && newname_dev
!= oldname_dev
)
4408 /* The implementation of `rename' on Windows does not return
4409 errno = EXDEV when you are moving a directory to a
4410 different storage device (ex. logical disk). It returns
4411 EACCES instead. So here we handle such situations and
4415 if ((attributes
= GetFileAttributesW (temp_w
)) != -1
4416 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
))
4419 else if (errno
== EEXIST
)
4421 if (_wchmod (newname_w
, 0666) != 0)
4423 if (_wunlink (newname_w
) != 0)
4425 result
= _wrename (temp_w
, newname_w
);
4427 else if (w32err
== ERROR_PRIVILEGE_NOT_HELD
4428 && is_symlink (temp
))
4430 /* This is Windows prohibiting the user from creating a
4431 symlink in another place, since that requires
4439 char newname_a
[MAX_PATH
];
4442 filename_to_ansi (temp
, temp_a
);
4443 filename_to_ansi (newname
, newname_a
);
4444 result
= rename (temp_a
, newname_a
);
4445 if (result
< 0 && force
)
4447 DWORD w32err
= GetLastError ();
4450 && newname_dev
!= oldname_dev
)
4454 if ((attributes
= GetFileAttributesA (temp_a
)) != -1
4455 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
))
4458 else if (errno
== EEXIST
)
4460 if (_chmod (newname_a
, 0666) != 0)
4462 if (_unlink (newname_a
) != 0)
4464 result
= rename (temp_a
, newname_a
);
4466 else if (w32err
== ERROR_PRIVILEGE_NOT_HELD
4467 && is_symlink (temp
))
4476 sys_rename (char const *old
, char const *new)
4478 return sys_rename_replace (old
, new, TRUE
);
4482 sys_rmdir (const char * path
)
4484 path
= map_w32_filename (path
, NULL
);
4486 if (w32_unicode_filenames
)
4488 wchar_t path_w
[MAX_PATH
];
4490 filename_to_utf16 (path
, path_w
);
4491 return _wrmdir (path_w
);
4495 char path_a
[MAX_PATH
];
4497 filename_to_ansi (path
, path_a
);
4498 return _rmdir (path_a
);
4503 sys_unlink (const char * path
)
4505 path
= map_w32_filename (path
, NULL
);
4507 if (w32_unicode_filenames
)
4509 wchar_t path_w
[MAX_PATH
];
4511 filename_to_utf16 (path
, path_w
);
4512 /* On Unix, unlink works without write permission. */
4513 _wchmod (path_w
, 0666);
4514 return _wunlink (path_w
);
4518 char path_a
[MAX_PATH
];
4520 filename_to_ansi (path
, path_a
);
4521 _chmod (path_a
, 0666);
4522 return _unlink (path_a
);
4526 static FILETIME utc_base_ft
;
4527 static ULONGLONG utc_base
; /* In 100ns units */
4528 static int init
= 0;
4530 #define FILETIME_TO_U64(result, ft) \
4532 ULARGE_INTEGER uiTemp; \
4533 uiTemp.LowPart = (ft).dwLowDateTime; \
4534 uiTemp.HighPart = (ft).dwHighDateTime; \
4535 result = uiTemp.QuadPart; \
4539 initialize_utc_base (void)
4541 /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */
4550 st
.wMilliseconds
= 0;
4552 SystemTimeToFileTime (&st
, &utc_base_ft
);
4553 FILETIME_TO_U64 (utc_base
, utc_base_ft
);
4557 convert_time (FILETIME ft
)
4563 initialize_utc_base ();
4567 if (CompareFileTime (&ft
, &utc_base_ft
) < 0)
4570 FILETIME_TO_U64 (tmp
, ft
);
4571 return (time_t) ((tmp
- utc_base
) / 10000000L);
4575 convert_from_time_t (time_t time
, FILETIME
* pft
)
4581 initialize_utc_base ();
4585 /* time in 100ns units since 1-Jan-1601 */
4586 tmp
.QuadPart
= (ULONGLONG
) time
* 10000000L + utc_base
;
4587 pft
->dwHighDateTime
= tmp
.HighPart
;
4588 pft
->dwLowDateTime
= tmp
.LowPart
;
4591 static PSECURITY_DESCRIPTOR
4592 get_file_security_desc_by_handle (HANDLE h
)
4594 PSECURITY_DESCRIPTOR psd
= NULL
;
4596 SECURITY_INFORMATION si
= OWNER_SECURITY_INFORMATION
4597 | GROUP_SECURITY_INFORMATION
/* | DACL_SECURITY_INFORMATION */ ;
4599 err
= get_security_info (h
, SE_FILE_OBJECT
, si
,
4600 NULL
, NULL
, NULL
, NULL
, &psd
);
4601 if (err
!= ERROR_SUCCESS
)
4607 static PSECURITY_DESCRIPTOR
4608 get_file_security_desc_by_name (const char *fname
)
4610 PSECURITY_DESCRIPTOR psd
= NULL
;
4612 SECURITY_INFORMATION si
= OWNER_SECURITY_INFORMATION
4613 | GROUP_SECURITY_INFORMATION
/* | DACL_SECURITY_INFORMATION */ ;
4615 if (!get_file_security (fname
, si
, psd
, 0, &sd_len
))
4617 err
= GetLastError ();
4618 if (err
!= ERROR_INSUFFICIENT_BUFFER
)
4622 psd
= xmalloc (sd_len
);
4623 if (!get_file_security (fname
, si
, psd
, sd_len
, &sd_len
))
4635 unsigned n_subauthorities
;
4637 /* Use the last sub-authority value of the RID, the relative
4638 portion of the SID, as user/group ID. */
4639 n_subauthorities
= *get_sid_sub_authority_count (sid
);
4640 if (n_subauthorities
< 1)
4641 return 0; /* the "World" RID */
4642 return *get_sid_sub_authority (sid
, n_subauthorities
- 1);
4645 /* Caching SID and account values for faster lokup. */
4649 struct w32_id
*next
;
4651 unsigned char sid
[FLEXIBLE_ARRAY_MEMBER
];
4654 static struct w32_id
*w32_idlist
;
4657 w32_cached_id (PSID sid
, unsigned *id
, char *name
)
4659 struct w32_id
*tail
, *found
;
4661 for (found
= NULL
, tail
= w32_idlist
; tail
; tail
= tail
->next
)
4663 if (equal_sid ((PSID
)tail
->sid
, sid
))
4672 strcpy (name
, found
->name
);
4680 w32_add_to_cache (PSID sid
, unsigned id
, char *name
)
4683 struct w32_id
*new_entry
;
4685 /* We don't want to leave behind stale cache from when Emacs was
4689 sid_len
= get_length_sid (sid
);
4690 new_entry
= xmalloc (offsetof (struct w32_id
, sid
) + sid_len
);
4693 new_entry
->rid
= id
;
4694 strcpy (new_entry
->name
, name
);
4695 copy_sid (sid_len
, (PSID
)new_entry
->sid
, sid
);
4696 new_entry
->next
= w32_idlist
;
4697 w32_idlist
= new_entry
;
4706 get_name_and_id (PSECURITY_DESCRIPTOR psd
, unsigned *id
, char *nm
, int what
)
4710 SID_NAME_USE ignore
;
4712 DWORD name_len
= sizeof (name
);
4714 DWORD domain_len
= sizeof (domain
);
4719 result
= get_security_descriptor_owner (psd
, &sid
, &dflt
);
4720 else if (what
== GID
)
4721 result
= get_security_descriptor_group (psd
, &sid
, &dflt
);
4725 if (!result
|| !is_valid_sid (sid
))
4727 else if (!w32_cached_id (sid
, id
, nm
))
4729 if (!lookup_account_sid (NULL
, sid
, name
, &name_len
,
4730 domain
, &domain_len
, &ignore
)
4731 || name_len
> UNLEN
+1)
4735 *id
= get_rid (sid
);
4737 w32_add_to_cache (sid
, *id
, name
);
4744 get_file_owner_and_group (PSECURITY_DESCRIPTOR psd
, struct stat
*st
)
4746 int dflt_usr
= 0, dflt_grp
= 0;
4755 if (get_name_and_id (psd
, &st
->st_uid
, st
->st_uname
, UID
))
4757 if (get_name_and_id (psd
, &st
->st_gid
, st
->st_gname
, GID
))
4760 /* Consider files to belong to current user/group, if we cannot get
4761 more accurate information. */
4764 st
->st_uid
= dflt_passwd
.pw_uid
;
4765 strcpy (st
->st_uname
, dflt_passwd
.pw_name
);
4769 st
->st_gid
= dflt_passwd
.pw_gid
;
4770 strcpy (st
->st_gname
, dflt_group
.gr_name
);
4774 /* Return non-zero if NAME is a potentially slow filesystem. */
4776 is_slow_fs (const char *name
)
4781 if (IS_DIRECTORY_SEP (name
[0]) && IS_DIRECTORY_SEP (name
[1]))
4782 devtype
= DRIVE_REMOTE
; /* assume UNC name is remote */
4783 else if (!(strlen (name
) >= 2 && IS_DEVICE_SEP (name
[1])))
4784 devtype
= GetDriveType (NULL
); /* use root of current drive */
4787 /* GetDriveType needs the root directory of the drive. */
4788 strncpy (drive_root
, name
, 2);
4789 drive_root
[2] = '\\';
4790 drive_root
[3] = '\0';
4791 devtype
= GetDriveType (drive_root
);
4793 return !(devtype
== DRIVE_FIXED
|| devtype
== DRIVE_RAMDISK
);
4796 /* If this is non-zero, the caller wants accurate information about
4797 file's owner and group, which could be expensive to get. dired.c
4798 uses this flag when needed for the job at hand. */
4799 int w32_stat_get_owner_group
;
4801 /* MSVC stat function can't cope with UNC names and has other bugs, so
4802 replace it with our own. This also allows us to calculate consistent
4803 inode values and owner/group without hacks in the main Emacs code,
4804 and support file names encoded in UTF-8. */
4807 stat_worker (const char * path
, struct stat
* buf
, int follow_symlinks
)
4809 char *name
, *save_name
, *r
;
4810 WIN32_FIND_DATAW wfd_w
;
4811 WIN32_FIND_DATAA wfd_a
;
4813 unsigned __int64 fake_inode
= 0;
4816 int rootdir
= FALSE
;
4817 PSECURITY_DESCRIPTOR psd
= NULL
;
4818 int is_a_symlink
= 0;
4819 DWORD file_flags
= FILE_FLAG_BACKUP_SEMANTICS
;
4820 DWORD access_rights
= 0;
4821 DWORD fattrs
= 0, serialnum
= 0, fs_high
= 0, fs_low
= 0, nlinks
= 1;
4822 FILETIME ctime
, atime
, wtime
;
4823 wchar_t name_w
[MAX_PATH
];
4824 char name_a
[MAX_PATH
];
4826 if (path
== NULL
|| buf
== NULL
)
4832 save_name
= name
= (char *) map_w32_filename (path
, &path
);
4833 /* Must be valid filename, no wild cards or other invalid
4835 if (strpbrk (name
, "*?|<>\""))
4841 len
= strlen (name
);
4842 /* Allocate 1 extra byte so that we could append a slash to a root
4843 directory, down below. */
4844 name
= strcpy (alloca (len
+ 2), name
);
4846 /* Avoid a somewhat costly call to is_symlink if the filesystem
4847 doesn't support symlinks. */
4848 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) != 0)
4849 is_a_symlink
= is_symlink (name
);
4851 /* Plan A: Open the file and get all the necessary information via
4852 the resulting handle. This solves several issues in one blow:
4854 . retrieves attributes for the target of a symlink, if needed
4855 . gets attributes of root directories and symlinks pointing to
4856 root directories, thus avoiding the need for special-casing
4857 these and detecting them by examining the file-name format
4858 . retrieves more accurate attributes (e.g., non-zero size for
4859 some directories, esp. directories that are junction points)
4860 . correctly resolves "c:/..", "/.." and similar file names
4861 . avoids run-time penalties for 99% of use cases
4863 Plan A is always tried first, unless the user asked not to (but
4864 if the file is a symlink and we need to follow links, we try Plan
4865 A even if the user asked not to).
4867 If Plan A fails, we go to Plan B (below), where various
4868 potentially expensive techniques must be used to handle "special"
4869 files such as UNC volumes etc. */
4870 if (!(NILP (Vw32_get_true_file_attributes
)
4871 || (EQ (Vw32_get_true_file_attributes
, Qlocal
) && is_slow_fs (name
)))
4872 /* Following symlinks requires getting the info by handle. */
4873 || (is_a_symlink
&& follow_symlinks
))
4875 BY_HANDLE_FILE_INFORMATION info
;
4877 if (is_a_symlink
&& !follow_symlinks
)
4878 file_flags
|= FILE_FLAG_OPEN_REPARSE_POINT
;
4879 /* READ_CONTROL access rights are required to get security info
4880 by handle. But if the OS doesn't support security in the
4881 first place, we don't need to try. */
4882 if (is_windows_9x () != TRUE
)
4883 access_rights
|= READ_CONTROL
;
4885 if (w32_unicode_filenames
)
4887 filename_to_utf16 (name
, name_w
);
4888 fh
= CreateFileW (name_w
, access_rights
, 0, NULL
, OPEN_EXISTING
,
4890 /* If CreateFile fails with READ_CONTROL, try again with
4891 zero as access rights. */
4892 if (fh
== INVALID_HANDLE_VALUE
&& access_rights
)
4893 fh
= CreateFileW (name_w
, 0, 0, NULL
, OPEN_EXISTING
,
4898 filename_to_ansi (name
, name_a
);
4899 fh
= CreateFileA (name_a
, access_rights
, 0, NULL
, OPEN_EXISTING
,
4901 if (fh
== INVALID_HANDLE_VALUE
&& access_rights
)
4902 fh
= CreateFileA (name_a
, 0, 0, NULL
, OPEN_EXISTING
,
4905 if (fh
== INVALID_HANDLE_VALUE
)
4906 goto no_true_file_attributes
;
4908 /* This is more accurate in terms of getting the correct number
4909 of links, but is quite slow (it is noticeable when Emacs is
4910 making a list of file name completions). */
4911 if (GetFileInformationByHandle (fh
, &info
))
4913 nlinks
= info
.nNumberOfLinks
;
4914 /* Might as well use file index to fake inode values, but this
4915 is not guaranteed to be unique unless we keep a handle open
4916 all the time (even then there are situations where it is
4917 not unique). Reputedly, there are at most 48 bits of info
4918 (on NTFS, presumably less on FAT). */
4919 fake_inode
= info
.nFileIndexHigh
;
4921 fake_inode
+= info
.nFileIndexLow
;
4922 serialnum
= info
.dwVolumeSerialNumber
;
4923 fs_high
= info
.nFileSizeHigh
;
4924 fs_low
= info
.nFileSizeLow
;
4925 ctime
= info
.ftCreationTime
;
4926 atime
= info
.ftLastAccessTime
;
4927 wtime
= info
.ftLastWriteTime
;
4928 fattrs
= info
.dwFileAttributes
;
4932 /* We don't go to Plan B here, because it's not clear that
4933 it's a good idea. The only known use case where
4934 CreateFile succeeds, but GetFileInformationByHandle fails
4935 (with ERROR_INVALID_FUNCTION) is for character devices
4936 such as NUL, PRN, etc. For these, switching to Plan B is
4937 a net loss, because we lose the character device
4938 attribute returned by GetFileType below (FindFirstFile
4939 doesn't set that bit in the attributes), and the other
4940 fields don't make sense for character devices anyway.
4941 Emacs doesn't really care for non-file entities in the
4942 context of l?stat, so neither do we. */
4944 /* w32err is assigned so one could put a breakpoint here and
4945 examine its value, when GetFileInformationByHandle
4947 DWORD w32err
= GetLastError ();
4951 case ERROR_FILE_NOT_FOUND
: /* can this ever happen? */
4957 /* Test for a symlink before testing for a directory, since
4958 symlinks to directories have the directory bit set, but we
4959 don't want them to appear as directories. */
4960 if (is_a_symlink
&& !follow_symlinks
)
4961 buf
->st_mode
= S_IFLNK
;
4962 else if (fattrs
& FILE_ATTRIBUTE_DIRECTORY
)
4963 buf
->st_mode
= S_IFDIR
;
4966 DWORD ftype
= GetFileType (fh
);
4970 case FILE_TYPE_DISK
:
4971 buf
->st_mode
= S_IFREG
;
4973 case FILE_TYPE_PIPE
:
4974 buf
->st_mode
= S_IFIFO
;
4976 case FILE_TYPE_CHAR
:
4977 case FILE_TYPE_UNKNOWN
:
4979 buf
->st_mode
= S_IFCHR
;
4982 /* We produce the fallback owner and group data, based on the
4983 current user that runs Emacs, in the following cases:
4985 . caller didn't request owner and group info
4986 . this is Windows 9X
4987 . getting security by handle failed, and we need to produce
4988 information for the target of a symlink (this is better
4989 than producing a potentially misleading info about the
4992 If getting security by handle fails, and we don't need to
4993 resolve symlinks, we try getting security by name. */
4994 if (!w32_stat_get_owner_group
|| is_windows_9x () == TRUE
)
4995 get_file_owner_and_group (NULL
, buf
);
4998 psd
= get_file_security_desc_by_handle (fh
);
5001 get_file_owner_and_group (psd
, buf
);
5004 else if (!(is_a_symlink
&& follow_symlinks
))
5006 psd
= get_file_security_desc_by_name (name
);
5007 get_file_owner_and_group (psd
, buf
);
5011 get_file_owner_and_group (NULL
, buf
);
5017 no_true_file_attributes
:
5018 /* Plan B: Either getting a handle on the file failed, or the
5019 caller explicitly asked us to not bother making this
5020 information more accurate.
5022 Implementation note: In Plan B, we never bother to resolve
5023 symlinks, even if we got here because we tried Plan A and
5024 failed. That's because, even if the caller asked for extra
5025 precision by setting Vw32_get_true_file_attributes to t,
5026 resolving symlinks requires acquiring a file handle to the
5027 symlink, which we already know will fail. And if the user
5028 did not ask for extra precision, resolving symlinks will fly
5029 in the face of that request, since the user then wants the
5030 lightweight version of the code. */
5031 rootdir
= (path
>= save_name
+ len
- 1
5032 && (IS_DIRECTORY_SEP (*path
) || *path
== 0));
5034 /* If name is "c:/.." or "/.." then stat "c:/" or "/". */
5035 r
= IS_DEVICE_SEP (name
[1]) ? &name
[2] : name
;
5036 if (IS_DIRECTORY_SEP (r
[0])
5037 && r
[1] == '.' && r
[2] == '.' && r
[3] == '\0')
5040 /* Note: If NAME is a symlink to the root of a UNC volume
5041 (i.e. "\\SERVER"), we will not detect that here, and we will
5042 return data about the symlink as result of FindFirst below.
5043 This is unfortunate, but that marginal use case does not
5044 justify a call to chase_symlinks which would impose a penalty
5045 on all the other use cases. (We get here for symlinks to
5046 roots of UNC volumes because CreateFile above fails for them,
5047 unlike with symlinks to root directories X:\ of drives.) */
5048 if (is_unc_volume (name
))
5050 fattrs
= unc_volume_file_attributes (name
);
5054 ctime
= atime
= wtime
= utc_base_ft
;
5058 /* Make sure root directories end in a slash. */
5059 if (!IS_DIRECTORY_SEP (name
[len
-1]))
5060 strcpy (name
+ len
, "\\");
5061 if (GetDriveType (name
) < 2)
5067 fattrs
= FILE_ATTRIBUTE_DIRECTORY
;
5068 ctime
= atime
= wtime
= utc_base_ft
;
5074 /* Make sure non-root directories do NOT end in a slash,
5075 otherwise FindFirstFile might fail. */
5076 if (IS_DIRECTORY_SEP (name
[len
-1]))
5079 /* (This is hacky, but helps when doing file completions on
5080 network drives.) Optimize by using information available from
5081 active readdir if possible. */
5082 len
= strlen (dir_pathname
);
5083 if (IS_DIRECTORY_SEP (dir_pathname
[len
-1]))
5085 if (dir_find_handle
!= INVALID_HANDLE_VALUE
5086 && last_dir_find_data
!= -1
5087 && !(is_a_symlink
&& follow_symlinks
)
5088 /* The 2 file-name comparisons below support only ASCII
5089 characters, and will lose (compare not equal) when
5090 the file names include non-ASCII characters that are
5091 the same but for the case. However, doing this
5092 properly involves: (a) converting both file names to
5093 UTF-16, (b) lower-casing both names using CharLowerW,
5094 and (c) comparing the results; this would be quite a
5095 bit slower, whereas Plan B is for users who want
5096 lightweight albeit inaccurate version of 'stat'. */
5097 && c_strncasecmp (save_name
, dir_pathname
, len
) == 0
5098 && IS_DIRECTORY_SEP (name
[len
])
5099 && xstrcasecmp (name
+ len
+ 1, dir_static
.d_name
) == 0)
5101 have_wfd
= last_dir_find_data
;
5102 /* This was the last entry returned by readdir. */
5103 if (last_dir_find_data
== DIR_FIND_DATA_W
)
5104 wfd_w
= dir_find_data_w
;
5106 wfd_a
= dir_find_data_a
;
5110 logon_network_drive (name
);
5112 if (w32_unicode_filenames
)
5114 filename_to_utf16 (name
, name_w
);
5115 fh
= FindFirstFileW (name_w
, &wfd_w
);
5116 have_wfd
= DIR_FIND_DATA_W
;
5120 filename_to_ansi (name
, name_a
);
5121 /* If NAME includes characters not representable by
5122 the current ANSI codepage, filename_to_ansi
5123 usually replaces them with a '?'. We don't want
5124 to let FindFirstFileA interpret those as wildcards,
5125 and "succeed", returning us data from some random
5126 file in the same directory. */
5127 if (_mbspbrk (name_a
, "?"))
5128 fh
= INVALID_HANDLE_VALUE
;
5130 fh
= FindFirstFileA (name_a
, &wfd_a
);
5131 have_wfd
= DIR_FIND_DATA_A
;
5133 if (fh
== INVALID_HANDLE_VALUE
)
5140 /* Note: if NAME is a symlink, the information we get from
5141 FindFirstFile is for the symlink, not its target. */
5142 if (have_wfd
== DIR_FIND_DATA_W
)
5144 fattrs
= wfd_w
.dwFileAttributes
;
5145 ctime
= wfd_w
.ftCreationTime
;
5146 atime
= wfd_w
.ftLastAccessTime
;
5147 wtime
= wfd_w
.ftLastWriteTime
;
5148 fs_high
= wfd_w
.nFileSizeHigh
;
5149 fs_low
= wfd_w
.nFileSizeLow
;
5153 fattrs
= wfd_a
.dwFileAttributes
;
5154 ctime
= wfd_a
.ftCreationTime
;
5155 atime
= wfd_a
.ftLastAccessTime
;
5156 wtime
= wfd_a
.ftLastWriteTime
;
5157 fs_high
= wfd_a
.nFileSizeHigh
;
5158 fs_low
= wfd_a
.nFileSizeLow
;
5162 serialnum
= volume_info
.serialnum
;
5164 if (is_a_symlink
&& !follow_symlinks
)
5165 buf
->st_mode
= S_IFLNK
;
5166 else if (fattrs
& FILE_ATTRIBUTE_DIRECTORY
)
5167 buf
->st_mode
= S_IFDIR
;
5169 buf
->st_mode
= S_IFREG
;
5171 get_file_owner_and_group (NULL
, buf
);
5174 buf
->st_ino
= fake_inode
;
5176 buf
->st_dev
= serialnum
;
5177 buf
->st_rdev
= serialnum
;
5179 buf
->st_size
= fs_high
;
5180 buf
->st_size
<<= 32;
5181 buf
->st_size
+= fs_low
;
5182 buf
->st_nlink
= nlinks
;
5184 /* Convert timestamps to Unix format. */
5185 buf
->st_mtime
= convert_time (wtime
);
5186 buf
->st_atime
= convert_time (atime
);
5187 if (buf
->st_atime
== 0) buf
->st_atime
= buf
->st_mtime
;
5188 buf
->st_ctime
= convert_time (ctime
);
5189 if (buf
->st_ctime
== 0) buf
->st_ctime
= buf
->st_mtime
;
5191 /* determine rwx permissions */
5192 if (is_a_symlink
&& !follow_symlinks
)
5193 permission
= S_IREAD
| S_IWRITE
| S_IEXEC
; /* Posix expectations */
5196 if (fattrs
& FILE_ATTRIBUTE_READONLY
)
5197 permission
= S_IREAD
;
5199 permission
= S_IREAD
| S_IWRITE
;
5201 if (fattrs
& FILE_ATTRIBUTE_DIRECTORY
)
5202 permission
|= S_IEXEC
;
5203 else if (is_exec (name
))
5204 permission
|= S_IEXEC
;
5207 buf
->st_mode
|= permission
| (permission
>> 3) | (permission
>> 6);
5213 stat (const char * path
, struct stat
* buf
)
5215 return stat_worker (path
, buf
, 1);
5219 lstat (const char * path
, struct stat
* buf
)
5221 return stat_worker (path
, buf
, 0);
5225 fstatat (int fd
, char const *name
, struct stat
*st
, int flags
)
5227 /* Rely on a hack: an open directory is modeled as file descriptor 0.
5228 This is good enough for the current usage in Emacs, but is fragile.
5230 FIXME: Add proper support for fdopendir, fstatat, readlinkat.
5231 Gnulib does this and can serve as a model. */
5232 char fullname
[MAX_UTF8_PATH
];
5236 char lastc
= dir_pathname
[strlen (dir_pathname
) - 1];
5238 if (_snprintf (fullname
, sizeof fullname
, "%s%s%s",
5239 dir_pathname
, IS_DIRECTORY_SEP (lastc
) ? "" : "/", name
)
5242 errno
= ENAMETOOLONG
;
5248 return stat_worker (name
, st
, ! (flags
& AT_SYMLINK_NOFOLLOW
));
5251 /* Provide fstat and utime as well as stat for consistent handling of
5254 fstat (int desc
, struct stat
* buf
)
5256 HANDLE fh
= (HANDLE
) _get_osfhandle (desc
);
5257 BY_HANDLE_FILE_INFORMATION info
;
5258 unsigned __int64 fake_inode
;
5261 switch (GetFileType (fh
) & ~FILE_TYPE_REMOTE
)
5263 case FILE_TYPE_DISK
:
5264 buf
->st_mode
= S_IFREG
;
5265 if (!GetFileInformationByHandle (fh
, &info
))
5271 case FILE_TYPE_PIPE
:
5272 buf
->st_mode
= S_IFIFO
;
5274 case FILE_TYPE_CHAR
:
5275 case FILE_TYPE_UNKNOWN
:
5277 buf
->st_mode
= S_IFCHR
;
5279 memset (&info
, 0, sizeof (info
));
5280 info
.dwFileAttributes
= 0;
5281 info
.ftCreationTime
= utc_base_ft
;
5282 info
.ftLastAccessTime
= utc_base_ft
;
5283 info
.ftLastWriteTime
= utc_base_ft
;
5286 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_DIRECTORY
)
5287 buf
->st_mode
= S_IFDIR
;
5289 buf
->st_nlink
= info
.nNumberOfLinks
;
5290 /* Might as well use file index to fake inode values, but this
5291 is not guaranteed to be unique unless we keep a handle open
5292 all the time (even then there are situations where it is
5293 not unique). Reputedly, there are at most 48 bits of info
5294 (on NTFS, presumably less on FAT). */
5295 fake_inode
= info
.nFileIndexHigh
;
5297 fake_inode
+= info
.nFileIndexLow
;
5299 /* MSVC defines _ino_t to be short; other libc's might not. */
5300 if (sizeof (buf
->st_ino
) == 2)
5301 buf
->st_ino
= fake_inode
^ (fake_inode
>> 16);
5303 buf
->st_ino
= fake_inode
;
5305 /* If the caller so requested, get the true file owner and group.
5306 Otherwise, consider the file to belong to the current user. */
5307 if (!w32_stat_get_owner_group
|| is_windows_9x () == TRUE
)
5308 get_file_owner_and_group (NULL
, buf
);
5311 PSECURITY_DESCRIPTOR psd
= NULL
;
5313 psd
= get_file_security_desc_by_handle (fh
);
5316 get_file_owner_and_group (psd
, buf
);
5320 get_file_owner_and_group (NULL
, buf
);
5323 buf
->st_dev
= info
.dwVolumeSerialNumber
;
5324 buf
->st_rdev
= info
.dwVolumeSerialNumber
;
5326 buf
->st_size
= info
.nFileSizeHigh
;
5327 buf
->st_size
<<= 32;
5328 buf
->st_size
+= info
.nFileSizeLow
;
5330 /* Convert timestamps to Unix format. */
5331 buf
->st_mtime
= convert_time (info
.ftLastWriteTime
);
5332 buf
->st_atime
= convert_time (info
.ftLastAccessTime
);
5333 if (buf
->st_atime
== 0) buf
->st_atime
= buf
->st_mtime
;
5334 buf
->st_ctime
= convert_time (info
.ftCreationTime
);
5335 if (buf
->st_ctime
== 0) buf
->st_ctime
= buf
->st_mtime
;
5337 /* determine rwx permissions */
5338 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_READONLY
)
5339 permission
= S_IREAD
;
5341 permission
= S_IREAD
| S_IWRITE
;
5343 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_DIRECTORY
)
5344 permission
|= S_IEXEC
;
5347 #if 0 /* no way of knowing the filename */
5348 char * p
= strrchr (name
, '.');
5350 (xstrcasecmp (p
, ".exe") == 0 ||
5351 xstrcasecmp (p
, ".com") == 0 ||
5352 xstrcasecmp (p
, ".bat") == 0 ||
5353 xstrcasecmp (p
, ".cmd") == 0))
5354 permission
|= S_IEXEC
;
5358 buf
->st_mode
|= permission
| (permission
>> 3) | (permission
>> 6);
5363 /* A version of 'utime' which handles directories as well as
5367 utime (const char *name
, struct utimbuf
*times
)
5369 struct utimbuf deftime
;
5376 deftime
.modtime
= deftime
.actime
= time (NULL
);
5380 if (w32_unicode_filenames
)
5382 wchar_t name_utf16
[MAX_PATH
];
5384 if (filename_to_utf16 (name
, name_utf16
) != 0)
5385 return -1; /* errno set by filename_to_utf16 */
5387 /* Need write access to set times. */
5388 fh
= CreateFileW (name_utf16
, FILE_WRITE_ATTRIBUTES
,
5389 /* If NAME specifies a directory, FILE_SHARE_DELETE
5390 allows other processes to delete files inside it,
5391 while we have the directory open. */
5392 FILE_SHARE_READ
| FILE_SHARE_WRITE
| FILE_SHARE_DELETE
,
5393 0, OPEN_EXISTING
, FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
5397 char name_ansi
[MAX_PATH
];
5399 if (filename_to_ansi (name
, name_ansi
) != 0)
5400 return -1; /* errno set by filename_to_ansi */
5402 fh
= CreateFileA (name_ansi
, FILE_WRITE_ATTRIBUTES
,
5403 FILE_SHARE_READ
| FILE_SHARE_WRITE
| FILE_SHARE_DELETE
,
5404 0, OPEN_EXISTING
, FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
5406 if (fh
!= INVALID_HANDLE_VALUE
)
5408 convert_from_time_t (times
->actime
, &atime
);
5409 convert_from_time_t (times
->modtime
, &mtime
);
5410 if (!SetFileTime (fh
, NULL
, &atime
, &mtime
))
5420 DWORD err
= GetLastError ();
5424 case ERROR_FILE_NOT_FOUND
:
5425 case ERROR_PATH_NOT_FOUND
:
5426 case ERROR_INVALID_DRIVE
:
5427 case ERROR_BAD_NETPATH
:
5428 case ERROR_DEV_NOT_EXIST
:
5429 /* ERROR_INVALID_NAME is the error CreateFile sets when the
5430 file name includes ?s, i.e. translation to ANSI failed. */
5431 case ERROR_INVALID_NAME
:
5434 case ERROR_TOO_MANY_OPEN_FILES
:
5437 case ERROR_ACCESS_DENIED
:
5438 case ERROR_SHARING_VIOLATION
:
5451 sys_umask (int mode
)
5453 static int current_mask
;
5454 int retval
, arg
= 0;
5456 /* The only bit we really support is the write bit. Files are
5457 always readable on MS-Windows, and the execute bit does not exist
5459 /* FIXME: if the GROUP and OTHER bits are reset, we should use ACLs
5460 to prevent access by other users on NTFS. */
5461 if ((mode
& S_IWRITE
) != 0)
5464 retval
= _umask (arg
);
5465 /* Merge into the return value the bits they've set the last time,
5466 which msvcrt.dll ignores and never returns. Emacs insists on its
5467 notion of mask being identical to what we return. */
5468 retval
|= (current_mask
& ~S_IWRITE
);
5469 current_mask
= mode
;
5475 /* Symlink-related functions. */
5476 #ifndef SYMBOLIC_LINK_FLAG_DIRECTORY
5477 #define SYMBOLIC_LINK_FLAG_DIRECTORY 0x1
5481 symlink (char const *filename
, char const *linkname
)
5483 char linkfn
[MAX_UTF8_PATH
], *tgtfn
;
5485 int dir_access
, filename_ends_in_slash
;
5487 /* Diagnostics follows Posix as much as possible. */
5488 if (filename
== NULL
|| linkname
== NULL
)
5498 if (strlen (filename
) > MAX_UTF8_PATH
|| strlen (linkname
) > MAX_UTF8_PATH
)
5500 errno
= ENAMETOOLONG
;
5504 strcpy (linkfn
, map_w32_filename (linkname
, NULL
));
5505 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) == 0)
5511 /* Note: since empty FILENAME was already rejected, we can safely
5512 refer to FILENAME[1]. */
5513 if (!(IS_DIRECTORY_SEP (filename
[0]) || IS_DEVICE_SEP (filename
[1])))
5515 /* Non-absolute FILENAME is understood as being relative to
5516 LINKNAME's directory. We need to prepend that directory to
5517 FILENAME to get correct results from faccessat below, since
5518 otherwise it will interpret FILENAME relative to the
5519 directory where the Emacs process runs. Note that
5520 make-symbolic-link always makes sure LINKNAME is a fully
5521 expanded file name. */
5522 char tem
[MAX_UTF8_PATH
];
5523 char *p
= linkfn
+ strlen (linkfn
);
5525 while (p
> linkfn
&& !IS_ANY_SEP (p
[-1]))
5528 strncpy (tem
, linkfn
, p
- linkfn
);
5529 strcpy (tem
+ (p
- linkfn
), filename
);
5530 dir_access
= faccessat (AT_FDCWD
, tem
, D_OK
, AT_EACCESS
);
5533 dir_access
= faccessat (AT_FDCWD
, filename
, D_OK
, AT_EACCESS
);
5535 /* Since Windows distinguishes between symlinks to directories and
5536 to files, we provide a kludgy feature: if FILENAME doesn't
5537 exist, but ends in a slash, we create a symlink to directory. If
5538 FILENAME exists and is a directory, we always create a symlink to
5540 filename_ends_in_slash
= IS_DIRECTORY_SEP (filename
[strlen (filename
) - 1]);
5541 if (dir_access
== 0 || filename_ends_in_slash
)
5542 flags
= SYMBOLIC_LINK_FLAG_DIRECTORY
;
5544 tgtfn
= (char *)map_w32_filename (filename
, NULL
);
5545 if (filename_ends_in_slash
)
5546 tgtfn
[strlen (tgtfn
) - 1] = '\0';
5549 if (!create_symbolic_link (linkfn
, tgtfn
, flags
))
5551 /* ENOSYS is set by create_symbolic_link, when it detects that
5552 the OS doesn't support the CreateSymbolicLink API. */
5553 if (errno
!= ENOSYS
)
5555 DWORD w32err
= GetLastError ();
5559 /* ERROR_SUCCESS is sometimes returned when LINKFN and
5560 TGTFN point to the same file name, go figure. */
5562 case ERROR_FILE_EXISTS
:
5565 case ERROR_ACCESS_DENIED
:
5568 case ERROR_FILE_NOT_FOUND
:
5569 case ERROR_PATH_NOT_FOUND
:
5570 case ERROR_BAD_NETPATH
:
5571 case ERROR_INVALID_REPARSE_DATA
:
5574 case ERROR_DIRECTORY
:
5577 case ERROR_PRIVILEGE_NOT_HELD
:
5578 case ERROR_NOT_ALL_ASSIGNED
:
5581 case ERROR_DISK_FULL
:
5594 /* A quick inexpensive test of whether FILENAME identifies a file that
5595 is a symlink. Returns non-zero if it is, zero otherwise. FILENAME
5596 must already be in the normalized form returned by
5599 Note: for repeated operations on many files, it is best to test
5600 whether the underlying volume actually supports symlinks, by
5601 testing the FILE_SUPPORTS_REPARSE_POINTS bit in volume's flags, and
5602 avoid the call to this function if it doesn't. That's because the
5603 call to GetFileAttributes takes a non-negligible time, especially
5604 on non-local or removable filesystems. See stat_worker for an
5605 example of how to do that. */
5607 is_symlink (const char *filename
)
5610 wchar_t filename_w
[MAX_PATH
];
5611 char filename_a
[MAX_PATH
];
5612 WIN32_FIND_DATAW wfdw
;
5613 WIN32_FIND_DATAA wfda
;
5615 int attrs_mean_symlink
;
5617 if (w32_unicode_filenames
)
5619 filename_to_utf16 (filename
, filename_w
);
5620 attrs
= GetFileAttributesW (filename_w
);
5624 filename_to_ansi (filename
, filename_a
);
5625 attrs
= GetFileAttributesA (filename_a
);
5629 DWORD w32err
= GetLastError ();
5633 case ERROR_BAD_NETPATH
: /* network share, can't be a symlink */
5635 case ERROR_ACCESS_DENIED
:
5638 case ERROR_FILE_NOT_FOUND
:
5639 case ERROR_PATH_NOT_FOUND
:
5646 if ((attrs
& FILE_ATTRIBUTE_REPARSE_POINT
) == 0)
5648 logon_network_drive (filename
);
5649 if (w32_unicode_filenames
)
5651 fh
= FindFirstFileW (filename_w
, &wfdw
);
5652 attrs_mean_symlink
=
5653 (wfdw
.dwFileAttributes
& FILE_ATTRIBUTE_REPARSE_POINT
) != 0
5654 && (wfdw
.dwReserved0
& IO_REPARSE_TAG_SYMLINK
) == IO_REPARSE_TAG_SYMLINK
;
5656 else if (_mbspbrk (filename_a
, "?"))
5658 /* filename_to_ansi failed to convert the file name. */
5664 fh
= FindFirstFileA (filename_a
, &wfda
);
5665 attrs_mean_symlink
=
5666 (wfda
.dwFileAttributes
& FILE_ATTRIBUTE_REPARSE_POINT
) != 0
5667 && (wfda
.dwReserved0
& IO_REPARSE_TAG_SYMLINK
) == IO_REPARSE_TAG_SYMLINK
;
5669 if (fh
== INVALID_HANDLE_VALUE
)
5672 return attrs_mean_symlink
;
5675 /* If NAME identifies a symbolic link, copy into BUF the file name of
5676 the symlink's target. Copy at most BUF_SIZE bytes, and do NOT
5677 null-terminate the target name, even if it fits. Return the number
5678 of bytes copied, or -1 if NAME is not a symlink or any error was
5679 encountered while resolving it. The file name copied into BUF is
5680 encoded in the current ANSI codepage. */
5682 readlink (const char *name
, char *buf
, size_t buf_size
)
5685 TOKEN_PRIVILEGES privs
;
5686 int restore_privs
= 0;
5689 char resolved
[MAX_UTF8_PATH
];
5702 path
= map_w32_filename (name
, NULL
);
5704 if (strlen (path
) > MAX_UTF8_PATH
)
5706 errno
= ENAMETOOLONG
;
5711 if (is_windows_9x () == TRUE
5712 || (volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) == 0
5713 || !is_symlink (path
))
5716 errno
= EINVAL
; /* not a symlink */
5720 /* Done with simple tests, now we're in for some _real_ work. */
5721 if (enable_privilege (SE_BACKUP_NAME
, TRUE
, &privs
))
5723 /* Implementation note: From here and onward, don't return early,
5724 since that will fail to restore the original set of privileges of
5725 the calling thread. */
5727 retval
= -1; /* not too optimistic, are we? */
5729 /* Note: In the next call to CreateFile, we use zero as the 2nd
5730 argument because, when the symlink is a hidden/system file,
5731 e.g. 'C:\Users\All Users', GENERIC_READ fails with
5732 ERROR_ACCESS_DENIED. Zero seems to work just fine, both for file
5733 and directory symlinks. */
5734 if (w32_unicode_filenames
)
5736 wchar_t path_w
[MAX_PATH
];
5738 filename_to_utf16 (path
, path_w
);
5739 sh
= CreateFileW (path_w
, 0, 0, NULL
, OPEN_EXISTING
,
5740 FILE_FLAG_OPEN_REPARSE_POINT
5741 | FILE_FLAG_BACKUP_SEMANTICS
,
5746 char path_a
[MAX_PATH
];
5748 filename_to_ansi (path
, path_a
);
5749 sh
= CreateFileA (path_a
, 0, 0, NULL
, OPEN_EXISTING
,
5750 FILE_FLAG_OPEN_REPARSE_POINT
5751 | FILE_FLAG_BACKUP_SEMANTICS
,
5754 if (sh
!= INVALID_HANDLE_VALUE
)
5756 BYTE reparse_buf
[MAXIMUM_REPARSE_DATA_BUFFER_SIZE
];
5757 REPARSE_DATA_BUFFER
*reparse_data
= (REPARSE_DATA_BUFFER
*)&reparse_buf
[0];
5760 if (!DeviceIoControl (sh
, FSCTL_GET_REPARSE_POINT
, NULL
, 0,
5761 reparse_buf
, MAXIMUM_REPARSE_DATA_BUFFER_SIZE
,
5764 else if (reparse_data
->ReparseTag
!= IO_REPARSE_TAG_SYMLINK
)
5768 /* Copy the link target name, in wide characters, from
5769 reparse_data, then convert it to multibyte encoding in
5770 the current locale's codepage. */
5774 reparse_data
->SymbolicLinkReparseBuffer
.PrintNameLength
;
5776 reparse_data
->SymbolicLinkReparseBuffer
.PathBuffer
5777 + reparse_data
->SymbolicLinkReparseBuffer
.PrintNameOffset
/sizeof(WCHAR
);
5778 size_t size_to_copy
= buf_size
;
5780 /* According to MSDN, PrintNameLength does not include the
5781 terminating null character. */
5782 lwname
= alloca ((lwname_len
+ 1) * sizeof(WCHAR
));
5783 memcpy (lwname
, lwname_src
, lwname_len
);
5784 lwname
[lwname_len
/sizeof(WCHAR
)] = 0; /* null-terminate */
5785 filename_from_utf16 (lwname
, resolved
);
5786 dostounix_filename (resolved
);
5787 lname_size
= strlen (resolved
) + 1;
5788 if (lname_size
<= buf_size
)
5789 size_to_copy
= lname_size
;
5790 strncpy (buf
, resolved
, size_to_copy
);
5792 retval
= size_to_copy
;
5798 /* CreateFile failed. */
5799 DWORD w32err2
= GetLastError ();
5803 case ERROR_FILE_NOT_FOUND
:
5804 case ERROR_PATH_NOT_FOUND
:
5807 case ERROR_ACCESS_DENIED
:
5808 case ERROR_TOO_MANY_OPEN_FILES
:
5818 restore_privilege (&privs
);
5826 readlinkat (int fd
, char const *name
, char *buffer
,
5829 /* Rely on a hack: an open directory is modeled as file descriptor 0,
5830 as in fstatat. FIXME: Add proper support for readlinkat. */
5831 char fullname
[MAX_UTF8_PATH
];
5835 if (_snprintf (fullname
, sizeof fullname
, "%s/%s", dir_pathname
, name
)
5838 errno
= ENAMETOOLONG
;
5844 return readlink (name
, buffer
, buffer_size
);
5847 /* If FILE is a symlink, return its target (stored in a static
5848 buffer); otherwise return FILE.
5850 This function repeatedly resolves symlinks in the last component of
5851 a chain of symlink file names, as in foo -> bar -> baz -> ...,
5852 until it arrives at a file whose last component is not a symlink,
5853 or some error occurs. It returns the target of the last
5854 successfully resolved symlink in the chain. If it succeeds to
5855 resolve even a single symlink, the value returned is an absolute
5856 file name with backslashes (result of GetFullPathName). By
5857 contrast, if the original FILE is returned, it is unaltered.
5859 Note: This function can set errno even if it succeeds.
5861 Implementation note: we only resolve the last portion ("basename")
5862 of the argument FILE and of each following file in the chain,
5863 disregarding any possible symlinks in its leading directories.
5864 This is because Windows system calls and library functions
5865 transparently resolve symlinks in leading directories and return
5866 correct information, as long as the basename is not a symlink. */
5868 chase_symlinks (const char *file
)
5870 static char target
[MAX_UTF8_PATH
];
5871 char link
[MAX_UTF8_PATH
];
5872 wchar_t target_w
[MAX_PATH
], link_w
[MAX_PATH
];
5873 char target_a
[MAX_PATH
], link_a
[MAX_PATH
];
5874 ssize_t res
, link_len
;
5877 if (is_windows_9x () == TRUE
|| !is_symlink (file
))
5878 return (char *)file
;
5880 if (w32_unicode_filenames
)
5882 wchar_t file_w
[MAX_PATH
];
5884 filename_to_utf16 (file
, file_w
);
5885 if (GetFullPathNameW (file_w
, MAX_PATH
, link_w
, NULL
) == 0)
5886 return (char *)file
;
5887 filename_from_utf16 (link_w
, link
);
5891 char file_a
[MAX_PATH
];
5893 filename_to_ansi (file
, file_a
);
5894 if (GetFullPathNameA (file_a
, MAX_PATH
, link_a
, NULL
) == 0)
5895 return (char *)file
;
5896 filename_from_ansi (link_a
, link
);
5898 link_len
= strlen (link
);
5903 /* Remove trailing slashes, as we want to resolve the last
5904 non-trivial part of the link name. */
5905 while (link_len
> 3 && IS_DIRECTORY_SEP (link
[link_len
-1]))
5906 link
[link_len
--] = '\0';
5908 res
= readlink (link
, target
, MAX_UTF8_PATH
);
5912 if (!(IS_DEVICE_SEP (target
[1])
5913 || (IS_DIRECTORY_SEP (target
[0]) && IS_DIRECTORY_SEP (target
[1]))))
5915 /* Target is relative. Append it to the directory part of
5916 the symlink, then copy the result back to target. */
5917 char *p
= link
+ link_len
;
5919 while (p
> link
&& !IS_ANY_SEP (p
[-1]))
5922 strcpy (target
, link
);
5924 /* Resolve any "." and ".." to get a fully-qualified file name
5926 if (w32_unicode_filenames
)
5928 filename_to_utf16 (target
, target_w
);
5929 link_len
= GetFullPathNameW (target_w
, MAX_PATH
, link_w
, NULL
);
5931 filename_from_utf16 (link_w
, link
);
5935 filename_to_ansi (target
, target_a
);
5936 link_len
= GetFullPathNameA (target_a
, MAX_PATH
, link_a
, NULL
);
5938 filename_from_ansi (link_a
, link
);
5940 link_len
= strlen (link
);
5942 } while (res
> 0 && link_len
> 0 && ++loop_count
<= 100);
5944 if (loop_count
> 100)
5947 if (target
[0] == '\0') /* not a single call to readlink succeeded */
5948 return (char *)file
;
5953 /* Posix ACL emulation. */
5956 acl_valid (acl_t acl
)
5958 return is_valid_security_descriptor ((PSECURITY_DESCRIPTOR
)acl
) ? 0 : -1;
5962 acl_to_text (acl_t acl
, ssize_t
*size
)
5965 SECURITY_INFORMATION flags
=
5966 OWNER_SECURITY_INFORMATION
|
5967 GROUP_SECURITY_INFORMATION
|
5968 DACL_SECURITY_INFORMATION
;
5969 char *retval
= NULL
;
5975 if (convert_sd_to_sddl ((PSECURITY_DESCRIPTOR
)acl
, SDDL_REVISION_1
, flags
, &str_acl
, &local_size
))
5978 /* We don't want to mix heaps, so we duplicate the string in our
5979 heap and free the one allocated by the API. */
5980 retval
= xstrdup (str_acl
);
5983 LocalFree (str_acl
);
5985 else if (errno
!= ENOTSUP
)
5992 acl_from_text (const char *acl_str
)
5994 PSECURITY_DESCRIPTOR psd
, retval
= NULL
;
6000 if (convert_sddl_to_sd (acl_str
, SDDL_REVISION_1
, &psd
, &sd_size
))
6003 retval
= xmalloc (sd_size
);
6004 memcpy (retval
, psd
, sd_size
);
6007 else if (errno
!= ENOTSUP
)
6014 acl_free (void *ptr
)
6021 acl_get_file (const char *fname
, acl_type_t type
)
6023 PSECURITY_DESCRIPTOR psd
= NULL
;
6024 const char *filename
;
6026 if (type
== ACL_TYPE_ACCESS
)
6029 SECURITY_INFORMATION si
=
6030 OWNER_SECURITY_INFORMATION
|
6031 GROUP_SECURITY_INFORMATION
|
6032 DACL_SECURITY_INFORMATION
;
6035 filename
= map_w32_filename (fname
, NULL
);
6036 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) != 0)
6037 fname
= chase_symlinks (filename
);
6042 if (!get_file_security (fname
, si
, psd
, 0, &sd_len
)
6043 && errno
!= ENOTSUP
)
6045 err
= GetLastError ();
6046 if (err
== ERROR_INSUFFICIENT_BUFFER
)
6048 psd
= xmalloc (sd_len
);
6049 if (!get_file_security (fname
, si
, psd
, sd_len
, &sd_len
))
6056 else if (err
== ERROR_FILE_NOT_FOUND
6057 || err
== ERROR_PATH_NOT_FOUND
6058 /* ERROR_INVALID_NAME is what we get if
6059 w32-unicode-filenames is nil and the file cannot
6060 be encoded in the current ANSI codepage. */
6061 || err
== ERROR_INVALID_NAME
)
6069 else if (type
!= ACL_TYPE_DEFAULT
)
6076 acl_set_file (const char *fname
, acl_type_t type
, acl_t acl
)
6078 TOKEN_PRIVILEGES old1
, old2
;
6080 int st
= 0, retval
= -1;
6081 SECURITY_INFORMATION flags
= 0;
6082 PSID psidOwner
, psidGroup
;
6087 const char *filename
;
6089 if (acl_valid (acl
) != 0
6090 || (type
!= ACL_TYPE_DEFAULT
&& type
!= ACL_TYPE_ACCESS
))
6096 if (type
== ACL_TYPE_DEFAULT
)
6102 filename
= map_w32_filename (fname
, NULL
);
6103 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) != 0)
6104 fname
= chase_symlinks (filename
);
6108 if (get_security_descriptor_owner ((PSECURITY_DESCRIPTOR
)acl
, &psidOwner
,
6111 flags
|= OWNER_SECURITY_INFORMATION
;
6112 if (get_security_descriptor_group ((PSECURITY_DESCRIPTOR
)acl
, &psidGroup
,
6115 flags
|= GROUP_SECURITY_INFORMATION
;
6116 if (get_security_descriptor_dacl ((PSECURITY_DESCRIPTOR
)acl
, &dacl_present
,
6119 flags
|= DACL_SECURITY_INFORMATION
;
6123 /* According to KB-245153, setting the owner will succeed if either:
6124 (1) the caller is the user who will be the new owner, and has the
6125 SE_TAKE_OWNERSHIP privilege, or
6126 (2) the caller has the SE_RESTORE privilege, in which case she can
6127 set any valid user or group as the owner
6129 We request below both SE_TAKE_OWNERSHIP and SE_RESTORE
6130 privileges, and disregard any failures in obtaining them. If
6131 these privileges cannot be obtained, and do not already exist in
6132 the calling thread's security token, this function could fail
6134 if (enable_privilege (SE_TAKE_OWNERSHIP_NAME
, TRUE
, &old1
))
6136 if (enable_privilege (SE_RESTORE_NAME
, TRUE
, &old2
))
6141 /* SetFileSecurity is deprecated by MS, and sometimes fails when
6142 DACL inheritance is involved, but it seems to preserve ownership
6143 better than SetNamedSecurityInfo, which is important e.g., in
6145 if (!set_file_security (fname
, flags
, (PSECURITY_DESCRIPTOR
)acl
))
6147 err
= GetLastError ();
6149 if (errno
!= ENOTSUP
)
6150 err
= set_named_security_info (fname
, SE_FILE_OBJECT
, flags
,
6151 psidOwner
, psidGroup
, pacl
, NULL
);
6154 err
= ERROR_SUCCESS
;
6155 if (err
!= ERROR_SUCCESS
)
6157 if (errno
== ENOTSUP
)
6159 else if (err
== ERROR_INVALID_OWNER
6160 || err
== ERROR_NOT_ALL_ASSIGNED
6161 || err
== ERROR_ACCESS_DENIED
)
6163 /* Maybe the requested ACL and the one the file already has
6164 are identical, in which case we can silently ignore the
6165 failure. (And no, Windows doesn't.) */
6166 acl_t current_acl
= acl_get_file (fname
, ACL_TYPE_ACCESS
);
6171 char *acl_from
= acl_to_text (current_acl
, NULL
);
6172 char *acl_to
= acl_to_text (acl
, NULL
);
6174 if (acl_from
&& acl_to
&& xstrcasecmp (acl_from
, acl_to
) == 0)
6180 acl_free (acl_from
);
6183 acl_free (current_acl
);
6186 else if (err
== ERROR_FILE_NOT_FOUND
6187 || err
== ERROR_PATH_NOT_FOUND
6188 /* ERROR_INVALID_NAME is what we get if
6189 w32-unicode-filenames is nil and the file cannot be
6190 encoded in the current ANSI codepage. */
6191 || err
== ERROR_INVALID_NAME
)
6205 restore_privilege (&old2
);
6206 restore_privilege (&old1
);
6214 /* MS-Windows version of careadlinkat (cf. ../lib/careadlinkat.c). We
6215 have a fixed max size for file names, so we don't need the kind of
6216 alloc/malloc/realloc dance the gnulib version does. We also don't
6217 support FD-relative symlinks. */
6219 careadlinkat (int fd
, char const *filename
,
6220 char *buffer
, size_t buffer_size
,
6221 struct allocator
const *alloc
,
6222 ssize_t (*preadlinkat
) (int, char const *, char *, size_t))
6224 char linkname
[MAX_UTF8_PATH
];
6227 link_size
= preadlinkat (fd
, filename
, linkname
, sizeof(linkname
));
6231 char *retval
= buffer
;
6233 linkname
[link_size
++] = '\0';
6234 if (link_size
> buffer_size
)
6235 retval
= (char *)(alloc
? alloc
->allocate
: xmalloc
) (link_size
);
6237 memcpy (retval
, linkname
, link_size
);
6245 w32_copy_file (const char *from
, const char *to
,
6246 int keep_time
, int preserve_ownership
, int copy_acls
)
6250 wchar_t from_w
[MAX_PATH
], to_w
[MAX_PATH
];
6251 char from_a
[MAX_PATH
], to_a
[MAX_PATH
];
6253 /* We ignore preserve_ownership for now. */
6254 preserve_ownership
= preserve_ownership
;
6258 acl
= acl_get_file (from
, ACL_TYPE_ACCESS
);
6259 if (acl
== NULL
&& acl_errno_valid (errno
))
6262 if (w32_unicode_filenames
)
6264 filename_to_utf16 (from
, from_w
);
6265 filename_to_utf16 (to
, to_w
);
6266 copy_result
= CopyFileW (from_w
, to_w
, FALSE
);
6270 filename_to_ansi (from
, from_a
);
6271 filename_to_ansi (to
, to_a
);
6272 copy_result
= CopyFileA (from_a
, to_a
, FALSE
);
6276 /* CopyFile doesn't set errno when it fails. By far the most
6277 "popular" reason is that the target is read-only. */
6278 DWORD err
= GetLastError ();
6282 case ERROR_FILE_NOT_FOUND
:
6285 case ERROR_ACCESS_DENIED
:
6288 case ERROR_ENCRYPTION_FAILED
:
6300 /* CopyFile retains the timestamp by default. However, see
6301 "Community Additions" for CopyFile: it sounds like that is not
6302 entirely true. Testing on Windows XP confirms that modified time
6303 is copied, but creation and last-access times are not.
6305 else if (!keep_time
)
6307 struct timespec now
;
6310 if (w32_unicode_filenames
)
6312 /* Ensure file is writable while its times are set. */
6313 attributes
= GetFileAttributesW (to_w
);
6314 SetFileAttributesW (to_w
, attributes
& ~FILE_ATTRIBUTE_READONLY
);
6315 now
= current_timespec ();
6316 if (set_file_times (-1, to
, now
, now
))
6318 /* Restore original attributes. */
6319 SetFileAttributesW (to_w
, attributes
);
6324 /* Restore original attributes. */
6325 SetFileAttributesW (to_w
, attributes
);
6329 attributes
= GetFileAttributesA (to_a
);
6330 SetFileAttributesA (to_a
, attributes
& ~FILE_ATTRIBUTE_READONLY
);
6331 now
= current_timespec ();
6332 if (set_file_times (-1, to
, now
, now
))
6334 SetFileAttributesA (to_a
, attributes
);
6339 SetFileAttributesA (to_a
, attributes
);
6345 acl_set_file (to
, ACL_TYPE_ACCESS
, acl
) != 0;
6347 if (fail
&& acl_errno_valid (errno
))
6355 /* Support for browsing other processes and their attributes. See
6356 process.c for the Lisp bindings. */
6358 /* Helper wrapper functions. */
6360 static HANDLE WINAPI
6361 create_toolhelp32_snapshot (DWORD Flags
, DWORD Ignored
)
6363 static CreateToolhelp32Snapshot_Proc s_pfn_Create_Toolhelp32_Snapshot
= NULL
;
6365 if (g_b_init_create_toolhelp32_snapshot
== 0)
6367 g_b_init_create_toolhelp32_snapshot
= 1;
6368 s_pfn_Create_Toolhelp32_Snapshot
= (CreateToolhelp32Snapshot_Proc
)
6369 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6370 "CreateToolhelp32Snapshot");
6372 if (s_pfn_Create_Toolhelp32_Snapshot
== NULL
)
6374 return INVALID_HANDLE_VALUE
;
6376 return (s_pfn_Create_Toolhelp32_Snapshot (Flags
, Ignored
));
6380 process32_first (HANDLE hSnapshot
, LPPROCESSENTRY32 lppe
)
6382 static Process32First_Proc s_pfn_Process32_First
= NULL
;
6384 if (g_b_init_process32_first
== 0)
6386 g_b_init_process32_first
= 1;
6387 s_pfn_Process32_First
= (Process32First_Proc
)
6388 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6391 if (s_pfn_Process32_First
== NULL
)
6395 return (s_pfn_Process32_First (hSnapshot
, lppe
));
6399 process32_next (HANDLE hSnapshot
, LPPROCESSENTRY32 lppe
)
6401 static Process32Next_Proc s_pfn_Process32_Next
= NULL
;
6403 if (g_b_init_process32_next
== 0)
6405 g_b_init_process32_next
= 1;
6406 s_pfn_Process32_Next
= (Process32Next_Proc
)
6407 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6410 if (s_pfn_Process32_Next
== NULL
)
6414 return (s_pfn_Process32_Next (hSnapshot
, lppe
));
6418 open_thread_token (HANDLE ThreadHandle
,
6419 DWORD DesiredAccess
,
6421 PHANDLE TokenHandle
)
6423 static OpenThreadToken_Proc s_pfn_Open_Thread_Token
= NULL
;
6424 HMODULE hm_advapi32
= NULL
;
6425 if (is_windows_9x () == TRUE
)
6427 SetLastError (ERROR_NOT_SUPPORTED
);
6430 if (g_b_init_open_thread_token
== 0)
6432 g_b_init_open_thread_token
= 1;
6433 hm_advapi32
= LoadLibrary ("Advapi32.dll");
6434 s_pfn_Open_Thread_Token
=
6435 (OpenThreadToken_Proc
) GetProcAddress (hm_advapi32
, "OpenThreadToken");
6437 if (s_pfn_Open_Thread_Token
== NULL
)
6439 SetLastError (ERROR_NOT_SUPPORTED
);
6443 s_pfn_Open_Thread_Token (
6452 impersonate_self (SECURITY_IMPERSONATION_LEVEL ImpersonationLevel
)
6454 static ImpersonateSelf_Proc s_pfn_Impersonate_Self
= NULL
;
6455 HMODULE hm_advapi32
= NULL
;
6456 if (is_windows_9x () == TRUE
)
6460 if (g_b_init_impersonate_self
== 0)
6462 g_b_init_impersonate_self
= 1;
6463 hm_advapi32
= LoadLibrary ("Advapi32.dll");
6464 s_pfn_Impersonate_Self
=
6465 (ImpersonateSelf_Proc
) GetProcAddress (hm_advapi32
, "ImpersonateSelf");
6467 if (s_pfn_Impersonate_Self
== NULL
)
6471 return s_pfn_Impersonate_Self (ImpersonationLevel
);
6475 revert_to_self (void)
6477 static RevertToSelf_Proc s_pfn_Revert_To_Self
= NULL
;
6478 HMODULE hm_advapi32
= NULL
;
6479 if (is_windows_9x () == TRUE
)
6483 if (g_b_init_revert_to_self
== 0)
6485 g_b_init_revert_to_self
= 1;
6486 hm_advapi32
= LoadLibrary ("Advapi32.dll");
6487 s_pfn_Revert_To_Self
=
6488 (RevertToSelf_Proc
) GetProcAddress (hm_advapi32
, "RevertToSelf");
6490 if (s_pfn_Revert_To_Self
== NULL
)
6494 return s_pfn_Revert_To_Self ();
6498 get_process_memory_info (HANDLE h_proc
,
6499 PPROCESS_MEMORY_COUNTERS mem_counters
,
6502 static GetProcessMemoryInfo_Proc s_pfn_Get_Process_Memory_Info
= NULL
;
6503 HMODULE hm_psapi
= NULL
;
6504 if (is_windows_9x () == TRUE
)
6508 if (g_b_init_get_process_memory_info
== 0)
6510 g_b_init_get_process_memory_info
= 1;
6511 hm_psapi
= LoadLibrary ("Psapi.dll");
6513 s_pfn_Get_Process_Memory_Info
= (GetProcessMemoryInfo_Proc
)
6514 GetProcAddress (hm_psapi
, "GetProcessMemoryInfo");
6516 if (s_pfn_Get_Process_Memory_Info
== NULL
)
6520 return s_pfn_Get_Process_Memory_Info (h_proc
, mem_counters
, bufsize
);
6524 get_process_working_set_size (HANDLE h_proc
,
6528 static GetProcessWorkingSetSize_Proc
6529 s_pfn_Get_Process_Working_Set_Size
= NULL
;
6531 if (is_windows_9x () == TRUE
)
6535 if (g_b_init_get_process_working_set_size
== 0)
6537 g_b_init_get_process_working_set_size
= 1;
6538 s_pfn_Get_Process_Working_Set_Size
= (GetProcessWorkingSetSize_Proc
)
6539 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6540 "GetProcessWorkingSetSize");
6542 if (s_pfn_Get_Process_Working_Set_Size
== NULL
)
6546 return s_pfn_Get_Process_Working_Set_Size (h_proc
, minrss
, maxrss
);
6550 global_memory_status (MEMORYSTATUS
*buf
)
6552 static GlobalMemoryStatus_Proc s_pfn_Global_Memory_Status
= NULL
;
6554 if (is_windows_9x () == TRUE
)
6558 if (g_b_init_global_memory_status
== 0)
6560 g_b_init_global_memory_status
= 1;
6561 s_pfn_Global_Memory_Status
= (GlobalMemoryStatus_Proc
)
6562 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6563 "GlobalMemoryStatus");
6565 if (s_pfn_Global_Memory_Status
== NULL
)
6569 return s_pfn_Global_Memory_Status (buf
);
6573 global_memory_status_ex (MEMORY_STATUS_EX
*buf
)
6575 static GlobalMemoryStatusEx_Proc s_pfn_Global_Memory_Status_Ex
= NULL
;
6577 if (is_windows_9x () == TRUE
)
6581 if (g_b_init_global_memory_status_ex
== 0)
6583 g_b_init_global_memory_status_ex
= 1;
6584 s_pfn_Global_Memory_Status_Ex
= (GlobalMemoryStatusEx_Proc
)
6585 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6586 "GlobalMemoryStatusEx");
6588 if (s_pfn_Global_Memory_Status_Ex
== NULL
)
6592 return s_pfn_Global_Memory_Status_Ex (buf
);
6596 list_system_processes (void)
6598 Lisp_Object proclist
= Qnil
;
6601 h_snapshot
= create_toolhelp32_snapshot (TH32CS_SNAPPROCESS
, 0);
6603 if (h_snapshot
!= INVALID_HANDLE_VALUE
)
6605 PROCESSENTRY32 proc_entry
;
6609 proc_entry
.dwSize
= sizeof (PROCESSENTRY32
);
6610 for (res
= process32_first (h_snapshot
, &proc_entry
); res
;
6611 res
= process32_next (h_snapshot
, &proc_entry
))
6613 proc_id
= proc_entry
.th32ProcessID
;
6614 proclist
= Fcons (make_fixnum_or_float (proc_id
), proclist
);
6617 CloseHandle (h_snapshot
);
6618 proclist
= Fnreverse (proclist
);
6625 enable_privilege (LPCTSTR priv_name
, BOOL enable_p
, TOKEN_PRIVILEGES
*old_priv
)
6627 TOKEN_PRIVILEGES priv
;
6628 DWORD priv_size
= sizeof (priv
);
6629 DWORD opriv_size
= sizeof (*old_priv
);
6630 HANDLE h_token
= NULL
;
6631 HANDLE h_thread
= GetCurrentThread ();
6635 res
= open_thread_token (h_thread
,
6636 TOKEN_QUERY
| TOKEN_ADJUST_PRIVILEGES
,
6638 if (!res
&& GetLastError () == ERROR_NO_TOKEN
)
6640 if (impersonate_self (SecurityImpersonation
))
6641 res
= open_thread_token (h_thread
,
6642 TOKEN_QUERY
| TOKEN_ADJUST_PRIVILEGES
,
6647 priv
.PrivilegeCount
= 1;
6648 priv
.Privileges
[0].Attributes
= enable_p
? SE_PRIVILEGE_ENABLED
: 0;
6649 LookupPrivilegeValue (NULL
, priv_name
, &priv
.Privileges
[0].Luid
);
6650 if (AdjustTokenPrivileges (h_token
, FALSE
, &priv
, priv_size
,
6651 old_priv
, &opriv_size
)
6652 && GetLastError () != ERROR_NOT_ALL_ASSIGNED
)
6656 CloseHandle (h_token
);
6662 restore_privilege (TOKEN_PRIVILEGES
*priv
)
6664 DWORD priv_size
= sizeof (*priv
);
6665 HANDLE h_token
= NULL
;
6668 if (open_thread_token (GetCurrentThread (),
6669 TOKEN_QUERY
| TOKEN_ADJUST_PRIVILEGES
,
6672 if (AdjustTokenPrivileges (h_token
, FALSE
, priv
, priv_size
, NULL
, NULL
)
6673 && GetLastError () != ERROR_NOT_ALL_ASSIGNED
)
6677 CloseHandle (h_token
);
6683 ltime (ULONGLONG time_100ns
)
6685 ULONGLONG time_sec
= time_100ns
/ 10000000;
6686 int subsec
= time_100ns
% 10000000;
6687 return list4i (time_sec
>> 16, time_sec
& 0xffff,
6688 subsec
/ 10, subsec
% 10 * 100000);
6691 #define U64_TO_LISP_TIME(time) ltime (time)
6694 process_times (HANDLE h_proc
, Lisp_Object
*ctime
, Lisp_Object
*etime
,
6695 Lisp_Object
*stime
, Lisp_Object
*utime
, Lisp_Object
*ttime
,
6698 FILETIME ft_creation
, ft_exit
, ft_kernel
, ft_user
, ft_current
;
6699 ULONGLONG tem1
, tem2
, tem3
, tem
;
6702 || !get_process_times_fn
6703 || !(*get_process_times_fn
) (h_proc
, &ft_creation
, &ft_exit
,
6704 &ft_kernel
, &ft_user
))
6707 GetSystemTimeAsFileTime (&ft_current
);
6709 FILETIME_TO_U64 (tem1
, ft_kernel
);
6710 *stime
= U64_TO_LISP_TIME (tem1
);
6712 FILETIME_TO_U64 (tem2
, ft_user
);
6713 *utime
= U64_TO_LISP_TIME (tem2
);
6716 *ttime
= U64_TO_LISP_TIME (tem3
);
6718 FILETIME_TO_U64 (tem
, ft_creation
);
6719 /* Process no 4 (System) returns zero creation time. */
6722 *ctime
= U64_TO_LISP_TIME (tem
);
6726 FILETIME_TO_U64 (tem3
, ft_current
);
6727 tem
= (tem3
- utc_base
) - tem
;
6729 *etime
= U64_TO_LISP_TIME (tem
);
6733 *pcpu
= 100.0 * (tem1
+ tem2
) / tem
;
6744 system_process_attributes (Lisp_Object pid
)
6746 Lisp_Object attrs
= Qnil
;
6747 Lisp_Object cmd_str
, decoded_cmd
, tem
;
6748 HANDLE h_snapshot
, h_proc
;
6751 char uname
[UNLEN
+1], gname
[GNLEN
+1], domain
[1025];
6752 DWORD ulength
= sizeof (uname
), dlength
= sizeof (domain
), needed
;
6753 DWORD glength
= sizeof (gname
);
6754 HANDLE token
= NULL
;
6755 SID_NAME_USE user_type
;
6756 unsigned char *buf
= NULL
;
6758 TOKEN_USER user_token
;
6759 TOKEN_PRIMARY_GROUP group_token
;
6762 PROCESS_MEMORY_COUNTERS mem
;
6763 PROCESS_MEMORY_COUNTERS_EX mem_ex
;
6764 SIZE_T minrss
, maxrss
;
6766 MEMORY_STATUS_EX memstex
;
6767 double totphys
= 0.0;
6768 Lisp_Object ctime
, stime
, utime
, etime
, ttime
;
6770 BOOL result
= FALSE
;
6772 CHECK_NUMBER_OR_FLOAT (pid
);
6773 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
6775 h_snapshot
= create_toolhelp32_snapshot (TH32CS_SNAPPROCESS
, 0);
6777 if (h_snapshot
!= INVALID_HANDLE_VALUE
)
6782 pe
.dwSize
= sizeof (PROCESSENTRY32
);
6783 for (res
= process32_first (h_snapshot
, &pe
); res
;
6784 res
= process32_next (h_snapshot
, &pe
))
6786 if (proc_id
== pe
.th32ProcessID
)
6789 decoded_cmd
= build_string ("Idle");
6792 /* Decode the command name from locale-specific
6794 cmd_str
= build_unibyte_string (pe
.szExeFile
);
6797 code_convert_string_norecord (cmd_str
,
6798 Vlocale_coding_system
, 0);
6800 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
6801 attrs
= Fcons (Fcons (Qppid
,
6802 make_fixnum_or_float (pe
.th32ParentProcessID
)),
6804 attrs
= Fcons (Fcons (Qpri
, make_number (pe
.pcPriClassBase
)),
6806 attrs
= Fcons (Fcons (Qthcount
,
6807 make_fixnum_or_float (pe
.cntThreads
)),
6814 CloseHandle (h_snapshot
);
6820 h_proc
= OpenProcess (PROCESS_QUERY_INFORMATION
| PROCESS_VM_READ
,
6822 /* If we were denied a handle to the process, try again after
6823 enabling the SeDebugPrivilege in our process. */
6826 TOKEN_PRIVILEGES priv_current
;
6828 if (enable_privilege (SE_DEBUG_NAME
, TRUE
, &priv_current
))
6830 h_proc
= OpenProcess (PROCESS_QUERY_INFORMATION
| PROCESS_VM_READ
,
6832 restore_privilege (&priv_current
);
6838 result
= open_process_token (h_proc
, TOKEN_QUERY
, &token
);
6841 result
= get_token_information (token
, TokenUser
, NULL
, 0, &blen
);
6842 if (!result
&& GetLastError () == ERROR_INSUFFICIENT_BUFFER
)
6844 buf
= xmalloc (blen
);
6845 result
= get_token_information (token
, TokenUser
,
6846 (LPVOID
)buf
, blen
, &needed
);
6849 memcpy (&user_token
, buf
, sizeof (user_token
));
6850 if (!w32_cached_id (user_token
.User
.Sid
, &euid
, uname
))
6852 euid
= get_rid (user_token
.User
.Sid
);
6853 result
= lookup_account_sid (NULL
, user_token
.User
.Sid
,
6858 w32_add_to_cache (user_token
.User
.Sid
, euid
, uname
);
6861 strcpy (uname
, "unknown");
6865 ulength
= strlen (uname
);
6871 /* Determine a reasonable euid and gid values. */
6872 if (xstrcasecmp ("administrator", uname
) == 0)
6874 euid
= 500; /* well-known Administrator uid */
6875 egid
= 513; /* well-known None gid */
6879 /* Get group id and name. */
6880 result
= get_token_information (token
, TokenPrimaryGroup
,
6881 (LPVOID
)buf
, blen
, &needed
);
6882 if (!result
&& GetLastError () == ERROR_INSUFFICIENT_BUFFER
)
6884 buf
= xrealloc (buf
, blen
= needed
);
6885 result
= get_token_information (token
, TokenPrimaryGroup
,
6886 (LPVOID
)buf
, blen
, &needed
);
6890 memcpy (&group_token
, buf
, sizeof (group_token
));
6891 if (!w32_cached_id (group_token
.PrimaryGroup
, &egid
, gname
))
6893 egid
= get_rid (group_token
.PrimaryGroup
);
6894 dlength
= sizeof (domain
);
6896 lookup_account_sid (NULL
, group_token
.PrimaryGroup
,
6897 gname
, &glength
, NULL
, &dlength
,
6900 w32_add_to_cache (group_token
.PrimaryGroup
,
6904 strcpy (gname
, "None");
6908 glength
= strlen (gname
);
6916 if (!is_windows_9x ())
6918 /* We couldn't open the process token, presumably because of
6919 insufficient access rights. Assume this process is run
6921 strcpy (uname
, "SYSTEM");
6922 strcpy (gname
, "None");
6923 euid
= 18; /* SYSTEM */
6924 egid
= 513; /* None */
6925 glength
= strlen (gname
);
6926 ulength
= strlen (uname
);
6928 /* If we are running under Windows 9X, where security calls are
6929 not supported, we assume all processes are run by the current
6931 else if (GetUserName (uname
, &ulength
))
6933 if (xstrcasecmp ("administrator", uname
) == 0)
6938 strcpy (gname
, "None");
6939 glength
= strlen (gname
);
6940 ulength
= strlen (uname
);
6946 strcpy (uname
, "administrator");
6947 ulength
= strlen (uname
);
6948 strcpy (gname
, "None");
6949 glength
= strlen (gname
);
6952 CloseHandle (token
);
6955 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (euid
)), attrs
);
6956 tem
= make_unibyte_string (uname
, ulength
);
6957 attrs
= Fcons (Fcons (Quser
,
6958 code_convert_string_norecord (tem
, Vlocale_coding_system
, 0)),
6960 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (egid
)), attrs
);
6961 tem
= make_unibyte_string (gname
, glength
);
6962 attrs
= Fcons (Fcons (Qgroup
,
6963 code_convert_string_norecord (tem
, Vlocale_coding_system
, 0)),
6966 if (global_memory_status_ex (&memstex
))
6967 #if __GNUC__ || (defined (_MSC_VER) && _MSC_VER >= 1300)
6968 totphys
= memstex
.ullTotalPhys
/ 1024.0;
6970 /* Visual Studio 6 cannot convert an unsigned __int64 type to
6971 double, so we need to do this for it... */
6973 DWORD tot_hi
= memstex
.ullTotalPhys
>> 32;
6974 DWORD tot_md
= (memstex
.ullTotalPhys
& 0x00000000ffffffff) >> 10;
6975 DWORD tot_lo
= memstex
.ullTotalPhys
% 1024;
6977 totphys
= tot_hi
* 4194304.0 + tot_md
+ tot_lo
/ 1024.0;
6979 #endif /* __GNUC__ || _MSC_VER >= 1300 */
6980 else if (global_memory_status (&memst
))
6981 totphys
= memst
.dwTotalPhys
/ 1024.0;
6984 && get_process_memory_info (h_proc
, (PROCESS_MEMORY_COUNTERS
*)&mem_ex
,
6987 SIZE_T rss
= mem_ex
.WorkingSetSize
/ 1024;
6989 attrs
= Fcons (Fcons (Qmajflt
,
6990 make_fixnum_or_float (mem_ex
.PageFaultCount
)),
6992 attrs
= Fcons (Fcons (Qvsize
,
6993 make_fixnum_or_float (mem_ex
.PrivateUsage
/ 1024)),
6995 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (rss
)), attrs
);
6997 attrs
= Fcons (Fcons (Qpmem
, make_float (100. * rss
/ totphys
)), attrs
);
7000 && get_process_memory_info (h_proc
, &mem
, sizeof (mem
)))
7002 SIZE_T rss
= mem_ex
.WorkingSetSize
/ 1024;
7004 attrs
= Fcons (Fcons (Qmajflt
,
7005 make_fixnum_or_float (mem
.PageFaultCount
)),
7007 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (rss
)), attrs
);
7009 attrs
= Fcons (Fcons (Qpmem
, make_float (100. * rss
/ totphys
)), attrs
);
7012 && get_process_working_set_size (h_proc
, &minrss
, &maxrss
))
7014 DWORD rss
= maxrss
/ 1024;
7016 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (maxrss
/ 1024)), attrs
);
7018 attrs
= Fcons (Fcons (Qpmem
, make_float (100. * rss
/ totphys
)), attrs
);
7021 if (process_times (h_proc
, &ctime
, &etime
, &stime
, &utime
, &ttime
, &pcpu
))
7023 attrs
= Fcons (Fcons (Qutime
, utime
), attrs
);
7024 attrs
= Fcons (Fcons (Qstime
, stime
), attrs
);
7025 attrs
= Fcons (Fcons (Qtime
, ttime
), attrs
);
7026 attrs
= Fcons (Fcons (Qstart
, ctime
), attrs
);
7027 attrs
= Fcons (Fcons (Qetime
, etime
), attrs
);
7028 attrs
= Fcons (Fcons (Qpcpu
, make_float (pcpu
)), attrs
);
7031 /* FIXME: Retrieve command line by walking the PEB of the process. */
7034 CloseHandle (h_proc
);
7039 w32_memory_info (unsigned long long *totalram
, unsigned long long *freeram
,
7040 unsigned long long *totalswap
, unsigned long long *freeswap
)
7043 MEMORY_STATUS_EX memstex
;
7045 /* Use GlobalMemoryStatusEx if available, as it can report more than
7047 if (global_memory_status_ex (&memstex
))
7049 *totalram
= memstex
.ullTotalPhys
;
7050 *freeram
= memstex
.ullAvailPhys
;
7051 *totalswap
= memstex
.ullTotalPageFile
;
7052 *freeswap
= memstex
.ullAvailPageFile
;
7055 else if (global_memory_status (&memst
))
7057 *totalram
= memst
.dwTotalPhys
;
7058 *freeram
= memst
.dwAvailPhys
;
7059 *totalswap
= memst
.dwTotalPageFile
;
7060 *freeswap
= memst
.dwAvailPageFile
;
7068 /* Wrappers for winsock functions to map between our file descriptors
7069 and winsock's handles; also set h_errno for convenience.
7071 To allow Emacs to run on systems which don't have winsock support
7072 installed, we dynamically link to winsock on startup if present, and
7073 otherwise provide the minimum necessary functionality
7074 (eg. gethostname). */
7076 /* function pointers for relevant socket functions */
7077 int (PASCAL
*pfn_WSAStartup
) (WORD wVersionRequired
, LPWSADATA lpWSAData
);
7078 void (PASCAL
*pfn_WSASetLastError
) (int iError
);
7079 int (PASCAL
*pfn_WSAGetLastError
) (void);
7080 int (PASCAL
*pfn_WSAEventSelect
) (SOCKET s
, HANDLE hEventObject
, long lNetworkEvents
);
7081 int (PASCAL
*pfn_WSAEnumNetworkEvents
) (SOCKET s
, HANDLE hEventObject
,
7082 WSANETWORKEVENTS
*NetworkEvents
);
7084 HANDLE (PASCAL
*pfn_WSACreateEvent
) (void);
7085 int (PASCAL
*pfn_WSACloseEvent
) (HANDLE hEvent
);
7086 int (PASCAL
*pfn_socket
) (int af
, int type
, int protocol
);
7087 int (PASCAL
*pfn_bind
) (SOCKET s
, const struct sockaddr
*addr
, int namelen
);
7088 int (PASCAL
*pfn_connect
) (SOCKET s
, const struct sockaddr
*addr
, int namelen
);
7089 int (PASCAL
*pfn_ioctlsocket
) (SOCKET s
, long cmd
, u_long
*argp
);
7090 int (PASCAL
*pfn_recv
) (SOCKET s
, char * buf
, int len
, int flags
);
7091 int (PASCAL
*pfn_send
) (SOCKET s
, const char * buf
, int len
, int flags
);
7092 int (PASCAL
*pfn_closesocket
) (SOCKET s
);
7093 int (PASCAL
*pfn_shutdown
) (SOCKET s
, int how
);
7094 int (PASCAL
*pfn_WSACleanup
) (void);
7096 u_short (PASCAL
*pfn_htons
) (u_short hostshort
);
7097 u_short (PASCAL
*pfn_ntohs
) (u_short netshort
);
7098 unsigned long (PASCAL
*pfn_inet_addr
) (const char * cp
);
7099 int (PASCAL
*pfn_gethostname
) (char * name
, int namelen
);
7100 struct hostent
* (PASCAL
*pfn_gethostbyname
) (const char * name
);
7101 struct servent
* (PASCAL
*pfn_getservbyname
) (const char * name
, const char * proto
);
7102 int (PASCAL
*pfn_getpeername
) (SOCKET s
, struct sockaddr
*addr
, int * namelen
);
7103 int (PASCAL
*pfn_setsockopt
) (SOCKET s
, int level
, int optname
,
7104 const char * optval
, int optlen
);
7105 int (PASCAL
*pfn_listen
) (SOCKET s
, int backlog
);
7106 int (PASCAL
*pfn_getsockname
) (SOCKET s
, struct sockaddr
* name
,
7108 SOCKET (PASCAL
*pfn_accept
) (SOCKET s
, struct sockaddr
* addr
, int * addrlen
);
7109 int (PASCAL
*pfn_recvfrom
) (SOCKET s
, char * buf
, int len
, int flags
,
7110 struct sockaddr
* from
, int * fromlen
);
7111 int (PASCAL
*pfn_sendto
) (SOCKET s
, const char * buf
, int len
, int flags
,
7112 const struct sockaddr
* to
, int tolen
);
7114 /* SetHandleInformation is only needed to make sockets non-inheritable. */
7115 BOOL (WINAPI
*pfn_SetHandleInformation
) (HANDLE object
, DWORD mask
, DWORD flags
);
7116 #ifndef HANDLE_FLAG_INHERIT
7117 #define HANDLE_FLAG_INHERIT 1
7121 static int winsock_inuse
;
7126 if (winsock_lib
!= NULL
&& winsock_inuse
== 0)
7128 release_listen_threads ();
7129 /* Not sure what would cause WSAENETDOWN, or even if it can happen
7130 after WSAStartup returns successfully, but it seems reasonable
7131 to allow unloading winsock anyway in that case. */
7132 if (pfn_WSACleanup () == 0 ||
7133 pfn_WSAGetLastError () == WSAENETDOWN
)
7135 if (FreeLibrary (winsock_lib
))
7144 init_winsock (int load_now
)
7146 WSADATA winsockData
;
7148 if (winsock_lib
!= NULL
)
7151 pfn_SetHandleInformation
7152 = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"),
7153 "SetHandleInformation");
7155 winsock_lib
= LoadLibrary ("Ws2_32.dll");
7157 if (winsock_lib
!= NULL
)
7159 /* dynamically link to socket functions */
7161 #define LOAD_PROC(fn) \
7162 if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \
7165 LOAD_PROC (WSAStartup
);
7166 LOAD_PROC (WSASetLastError
);
7167 LOAD_PROC (WSAGetLastError
);
7168 LOAD_PROC (WSAEventSelect
);
7169 LOAD_PROC (WSAEnumNetworkEvents
);
7170 LOAD_PROC (WSACreateEvent
);
7171 LOAD_PROC (WSACloseEvent
);
7174 LOAD_PROC (connect
);
7175 LOAD_PROC (ioctlsocket
);
7178 LOAD_PROC (closesocket
);
7179 LOAD_PROC (shutdown
);
7182 LOAD_PROC (inet_addr
);
7183 LOAD_PROC (gethostname
);
7184 LOAD_PROC (gethostbyname
);
7185 LOAD_PROC (getservbyname
);
7186 LOAD_PROC (getpeername
);
7187 LOAD_PROC (WSACleanup
);
7188 LOAD_PROC (setsockopt
);
7190 LOAD_PROC (getsockname
);
7192 LOAD_PROC (recvfrom
);
7196 /* specify version 1.1 of winsock */
7197 if (pfn_WSAStartup (0x101, &winsockData
) == 0)
7199 if (winsockData
.wVersion
!= 0x101)
7204 /* Report that winsock exists and is usable, but leave
7205 socket functions disabled. I am assuming that calling
7206 WSAStartup does not require any network interaction,
7207 and in particular does not cause or require a dial-up
7208 connection to be established. */
7211 FreeLibrary (winsock_lib
);
7219 FreeLibrary (winsock_lib
);
7229 /* Function to map winsock error codes to errno codes for those errno
7230 code defined in errno.h (errno values not defined by errno.h are
7231 already in nt/inc/sys/socket.h). */
7238 if (winsock_lib
== NULL
)
7241 wsa_err
= pfn_WSAGetLastError ();
7245 case WSAEACCES
: errno
= EACCES
; break;
7246 case WSAEBADF
: errno
= EBADF
; break;
7247 case WSAEFAULT
: errno
= EFAULT
; break;
7248 case WSAEINTR
: errno
= EINTR
; break;
7249 case WSAEINVAL
: errno
= EINVAL
; break;
7250 case WSAEMFILE
: errno
= EMFILE
; break;
7251 case WSAENAMETOOLONG
: errno
= ENAMETOOLONG
; break;
7252 case WSAENOTEMPTY
: errno
= ENOTEMPTY
; break;
7253 case WSAEWOULDBLOCK
: errno
= EWOULDBLOCK
; break;
7254 case WSAENOTCONN
: errno
= ENOTCONN
; break;
7255 default: errno
= wsa_err
; break;
7263 if (winsock_lib
!= NULL
)
7264 pfn_WSASetLastError (0);
7267 /* Extend strerror to handle the winsock-specific error codes. */
7271 } _wsa_errlist
[] = {
7272 {WSAEINTR
, "Interrupted function call"},
7273 {WSAEBADF
, "Bad file descriptor"},
7274 {WSAEACCES
, "Permission denied"},
7275 {WSAEFAULT
, "Bad address"},
7276 {WSAEINVAL
, "Invalid argument"},
7277 {WSAEMFILE
, "Too many open files"},
7279 {WSAEWOULDBLOCK
, "Resource temporarily unavailable"},
7280 {WSAEINPROGRESS
, "Operation now in progress"},
7281 {WSAEALREADY
, "Operation already in progress"},
7282 {WSAENOTSOCK
, "Socket operation on non-socket"},
7283 {WSAEDESTADDRREQ
, "Destination address required"},
7284 {WSAEMSGSIZE
, "Message too long"},
7285 {WSAEPROTOTYPE
, "Protocol wrong type for socket"},
7286 {WSAENOPROTOOPT
, "Bad protocol option"},
7287 {WSAEPROTONOSUPPORT
, "Protocol not supported"},
7288 {WSAESOCKTNOSUPPORT
, "Socket type not supported"},
7289 {WSAEOPNOTSUPP
, "Operation not supported"},
7290 {WSAEPFNOSUPPORT
, "Protocol family not supported"},
7291 {WSAEAFNOSUPPORT
, "Address family not supported by protocol family"},
7292 {WSAEADDRINUSE
, "Address already in use"},
7293 {WSAEADDRNOTAVAIL
, "Cannot assign requested address"},
7294 {WSAENETDOWN
, "Network is down"},
7295 {WSAENETUNREACH
, "Network is unreachable"},
7296 {WSAENETRESET
, "Network dropped connection on reset"},
7297 {WSAECONNABORTED
, "Software caused connection abort"},
7298 {WSAECONNRESET
, "Connection reset by peer"},
7299 {WSAENOBUFS
, "No buffer space available"},
7300 {WSAEISCONN
, "Socket is already connected"},
7301 {WSAENOTCONN
, "Socket is not connected"},
7302 {WSAESHUTDOWN
, "Cannot send after socket shutdown"},
7303 {WSAETOOMANYREFS
, "Too many references"}, /* not sure */
7304 {WSAETIMEDOUT
, "Connection timed out"},
7305 {WSAECONNREFUSED
, "Connection refused"},
7306 {WSAELOOP
, "Network loop"}, /* not sure */
7307 {WSAENAMETOOLONG
, "Name is too long"},
7308 {WSAEHOSTDOWN
, "Host is down"},
7309 {WSAEHOSTUNREACH
, "No route to host"},
7310 {WSAENOTEMPTY
, "Buffer not empty"}, /* not sure */
7311 {WSAEPROCLIM
, "Too many processes"},
7312 {WSAEUSERS
, "Too many users"}, /* not sure */
7313 {WSAEDQUOT
, "Double quote in host name"}, /* really not sure */
7314 {WSAESTALE
, "Data is stale"}, /* not sure */
7315 {WSAEREMOTE
, "Remote error"}, /* not sure */
7317 {WSASYSNOTREADY
, "Network subsystem is unavailable"},
7318 {WSAVERNOTSUPPORTED
, "WINSOCK.DLL version out of range"},
7319 {WSANOTINITIALISED
, "Winsock not initialized successfully"},
7320 {WSAEDISCON
, "Graceful shutdown in progress"},
7322 {WSAENOMORE
, "No more operations allowed"}, /* not sure */
7323 {WSAECANCELLED
, "Operation cancelled"}, /* not sure */
7324 {WSAEINVALIDPROCTABLE
, "Invalid procedure table from service provider"},
7325 {WSAEINVALIDPROVIDER
, "Invalid service provider version number"},
7326 {WSAEPROVIDERFAILEDINIT
, "Unable to initialize a service provider"},
7327 {WSASYSCALLFAILURE
, "System call failure"},
7328 {WSASERVICE_NOT_FOUND
, "Service not found"}, /* not sure */
7329 {WSATYPE_NOT_FOUND
, "Class type not found"},
7330 {WSA_E_NO_MORE
, "No more resources available"}, /* really not sure */
7331 {WSA_E_CANCELLED
, "Operation already cancelled"}, /* really not sure */
7332 {WSAEREFUSED
, "Operation refused"}, /* not sure */
7335 {WSAHOST_NOT_FOUND
, "Host not found"},
7336 {WSATRY_AGAIN
, "Authoritative host not found during name lookup"},
7337 {WSANO_RECOVERY
, "Non-recoverable error during name lookup"},
7338 {WSANO_DATA
, "Valid name, no data record of requested type"},
7344 sys_strerror (int error_no
)
7347 static char unknown_msg
[40];
7349 if (error_no
>= 0 && error_no
< sys_nerr
)
7350 return sys_errlist
[error_no
];
7352 for (i
= 0; _wsa_errlist
[i
].errnum
>= 0; i
++)
7353 if (_wsa_errlist
[i
].errnum
== error_no
)
7354 return _wsa_errlist
[i
].msg
;
7356 sprintf (unknown_msg
, "Unidentified error: %d", error_no
);
7360 /* [andrewi 3-May-96] I've had conflicting results using both methods,
7361 but I believe the method of keeping the socket handle separate (and
7362 insuring it is not inheritable) is the correct one. */
7364 #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd)
7366 static int socket_to_fd (SOCKET s
);
7369 sys_socket (int af
, int type
, int protocol
)
7373 if (winsock_lib
== NULL
)
7376 return INVALID_SOCKET
;
7381 /* call the real socket function */
7382 s
= pfn_socket (af
, type
, protocol
);
7384 if (s
!= INVALID_SOCKET
)
7385 return socket_to_fd (s
);
7391 /* Convert a SOCKET to a file descriptor. */
7393 socket_to_fd (SOCKET s
)
7398 /* Although under NT 3.5 _open_osfhandle will accept a socket
7399 handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT,
7400 that does not work under NT 3.1. However, we can get the same
7401 effect by using a backdoor function to replace an existing
7402 descriptor handle with the one we want. */
7404 /* allocate a file descriptor (with appropriate flags) */
7405 fd
= _open ("NUL:", _O_RDWR
);
7408 /* Make a non-inheritable copy of the socket handle. Note
7409 that it is possible that sockets aren't actually kernel
7410 handles, which appears to be the case on Windows 9x when
7411 the MS Proxy winsock client is installed. */
7413 /* Apparently there is a bug in NT 3.51 with some service
7414 packs, which prevents using DuplicateHandle to make a
7415 socket handle non-inheritable (causes WSACleanup to
7416 hang). The work-around is to use SetHandleInformation
7417 instead if it is available and implemented. */
7418 if (pfn_SetHandleInformation
)
7420 pfn_SetHandleInformation ((HANDLE
) s
, HANDLE_FLAG_INHERIT
, 0);
7424 HANDLE parent
= GetCurrentProcess ();
7425 HANDLE new_s
= INVALID_HANDLE_VALUE
;
7427 if (DuplicateHandle (parent
,
7433 DUPLICATE_SAME_ACCESS
))
7435 /* It is possible that DuplicateHandle succeeds even
7436 though the socket wasn't really a kernel handle,
7437 because a real handle has the same value. So
7438 test whether the new handle really is a socket. */
7439 long nonblocking
= 0;
7440 if (pfn_ioctlsocket ((SOCKET
) new_s
, FIONBIO
, &nonblocking
) == 0)
7442 pfn_closesocket (s
);
7447 CloseHandle (new_s
);
7452 eassert (fd
< MAXDESC
);
7453 fd_info
[fd
].hnd
= (HANDLE
) s
;
7455 /* set our own internal flags */
7456 fd_info
[fd
].flags
= FILE_SOCKET
| FILE_BINARY
| FILE_READ
| FILE_WRITE
;
7462 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
7464 /* attach child_process to fd_info */
7465 if (fd_info
[ fd
].cp
!= NULL
)
7467 DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd
));
7471 fd_info
[ fd
].cp
= cp
;
7474 winsock_inuse
++; /* count open sockets */
7482 pfn_closesocket (s
);
7488 sys_bind (int s
, const struct sockaddr
* addr
, int namelen
)
7490 if (winsock_lib
== NULL
)
7493 return SOCKET_ERROR
;
7497 if (fd_info
[s
].flags
& FILE_SOCKET
)
7499 int rc
= pfn_bind (SOCK_HANDLE (s
), addr
, namelen
);
7500 if (rc
== SOCKET_ERROR
)
7505 return SOCKET_ERROR
;
7509 sys_connect (int s
, const struct sockaddr
* name
, int namelen
)
7511 if (winsock_lib
== NULL
)
7514 return SOCKET_ERROR
;
7518 if (fd_info
[s
].flags
& FILE_SOCKET
)
7520 int rc
= pfn_connect (SOCK_HANDLE (s
), name
, namelen
);
7521 if (rc
== SOCKET_ERROR
)
7524 /* If this is a non-blocking 'connect', set the bit in flags
7525 that will tell reader_thread to wait for connection
7526 before trying to read. */
7527 if (errno
== EWOULDBLOCK
&& (fd_info
[s
].flags
& FILE_NDELAY
) != 0)
7529 errno
= EINPROGRESS
; /* that's what process.c expects */
7530 fd_info
[s
].flags
|= FILE_CONNECT
;
7536 return SOCKET_ERROR
;
7540 sys_htons (u_short hostshort
)
7542 return (winsock_lib
!= NULL
) ?
7543 pfn_htons (hostshort
) : hostshort
;
7547 sys_ntohs (u_short netshort
)
7549 return (winsock_lib
!= NULL
) ?
7550 pfn_ntohs (netshort
) : netshort
;
7554 sys_inet_addr (const char * cp
)
7556 return (winsock_lib
!= NULL
) ?
7557 pfn_inet_addr (cp
) : INADDR_NONE
;
7561 sys_gethostname (char * name
, int namelen
)
7563 if (winsock_lib
!= NULL
)
7568 retval
= pfn_gethostname (name
, namelen
);
7569 if (retval
== SOCKET_ERROR
)
7574 if (namelen
> MAX_COMPUTERNAME_LENGTH
)
7575 return !GetComputerName (name
, (DWORD
*)&namelen
);
7578 return SOCKET_ERROR
;
7582 sys_gethostbyname (const char * name
)
7584 struct hostent
* host
;
7585 int h_err
= h_errno
;
7587 if (winsock_lib
== NULL
)
7589 h_errno
= NO_RECOVERY
;
7595 host
= pfn_gethostbyname (name
);
7607 sys_getservbyname (const char * name
, const char * proto
)
7609 struct servent
* serv
;
7611 if (winsock_lib
== NULL
)
7618 serv
= pfn_getservbyname (name
, proto
);
7625 sys_getpeername (int s
, struct sockaddr
*addr
, int * namelen
)
7627 if (winsock_lib
== NULL
)
7630 return SOCKET_ERROR
;
7634 if (fd_info
[s
].flags
& FILE_SOCKET
)
7636 int rc
= pfn_getpeername (SOCK_HANDLE (s
), addr
, namelen
);
7637 if (rc
== SOCKET_ERROR
)
7642 return SOCKET_ERROR
;
7646 sys_shutdown (int s
, int how
)
7648 if (winsock_lib
== NULL
)
7651 return SOCKET_ERROR
;
7655 if (fd_info
[s
].flags
& FILE_SOCKET
)
7657 int rc
= pfn_shutdown (SOCK_HANDLE (s
), how
);
7658 if (rc
== SOCKET_ERROR
)
7663 return SOCKET_ERROR
;
7667 sys_setsockopt (int s
, int level
, int optname
, const void * optval
, int optlen
)
7669 if (winsock_lib
== NULL
)
7672 return SOCKET_ERROR
;
7676 if (fd_info
[s
].flags
& FILE_SOCKET
)
7678 int rc
= pfn_setsockopt (SOCK_HANDLE (s
), level
, optname
,
7679 (const char *)optval
, optlen
);
7680 if (rc
== SOCKET_ERROR
)
7685 return SOCKET_ERROR
;
7689 sys_listen (int s
, int backlog
)
7691 if (winsock_lib
== NULL
)
7694 return SOCKET_ERROR
;
7698 if (fd_info
[s
].flags
& FILE_SOCKET
)
7700 int rc
= pfn_listen (SOCK_HANDLE (s
), backlog
);
7701 if (rc
== SOCKET_ERROR
)
7704 fd_info
[s
].flags
|= FILE_LISTEN
;
7708 return SOCKET_ERROR
;
7712 sys_getsockname (int s
, struct sockaddr
* name
, int * namelen
)
7714 if (winsock_lib
== NULL
)
7717 return SOCKET_ERROR
;
7721 if (fd_info
[s
].flags
& FILE_SOCKET
)
7723 int rc
= pfn_getsockname (SOCK_HANDLE (s
), name
, namelen
);
7724 if (rc
== SOCKET_ERROR
)
7729 return SOCKET_ERROR
;
7733 sys_accept (int s
, struct sockaddr
* addr
, int * addrlen
)
7735 if (winsock_lib
== NULL
)
7742 if (fd_info
[s
].flags
& FILE_LISTEN
)
7744 SOCKET t
= pfn_accept (SOCK_HANDLE (s
), addr
, addrlen
);
7746 if (t
== INVALID_SOCKET
)
7749 fd
= socket_to_fd (t
);
7753 fd_info
[s
].cp
->status
= STATUS_READ_ACKNOWLEDGED
;
7754 ResetEvent (fd_info
[s
].cp
->char_avail
);
7763 sys_recvfrom (int s
, char * buf
, int len
, int flags
,
7764 struct sockaddr
* from
, int * fromlen
)
7766 if (winsock_lib
== NULL
)
7769 return SOCKET_ERROR
;
7773 if (fd_info
[s
].flags
& FILE_SOCKET
)
7775 int rc
= pfn_recvfrom (SOCK_HANDLE (s
), buf
, len
, flags
, from
, fromlen
);
7776 if (rc
== SOCKET_ERROR
)
7781 return SOCKET_ERROR
;
7785 sys_sendto (int s
, const char * buf
, int len
, int flags
,
7786 const struct sockaddr
* to
, int tolen
)
7788 if (winsock_lib
== NULL
)
7791 return SOCKET_ERROR
;
7795 if (fd_info
[s
].flags
& FILE_SOCKET
)
7797 int rc
= pfn_sendto (SOCK_HANDLE (s
), buf
, len
, flags
, to
, tolen
);
7798 if (rc
== SOCKET_ERROR
)
7803 return SOCKET_ERROR
;
7806 /* Windows does not have an fcntl function. Provide an implementation
7807 good enough for Emacs. */
7809 fcntl (int s
, int cmd
, int options
)
7811 /* In the w32 Emacs port, fcntl (fd, F_DUPFD_CLOEXEC, fd1) is always
7812 invoked in a context where fd1 is closed and all descriptors less
7813 than fd1 are open, so sys_dup is an adequate implementation. */
7814 if (cmd
== F_DUPFD_CLOEXEC
)
7818 if (fd_info
[s
].flags
& FILE_SOCKET
)
7820 if (winsock_lib
== NULL
)
7826 if (cmd
== F_SETFL
&& options
== O_NONBLOCK
)
7828 unsigned long nblock
= 1;
7829 int rc
= pfn_ioctlsocket (SOCK_HANDLE (s
), FIONBIO
, &nblock
);
7830 if (rc
== SOCKET_ERROR
)
7832 /* Keep track of the fact that we set this to non-blocking. */
7833 fd_info
[s
].flags
|= FILE_NDELAY
;
7839 return SOCKET_ERROR
;
7842 else if ((fd_info
[s
].flags
& (FILE_PIPE
| FILE_WRITE
))
7843 == (FILE_PIPE
| FILE_WRITE
))
7845 /* Force our writes to pipes be non-blocking. */
7846 if (cmd
== F_SETFL
&& options
== O_NONBLOCK
)
7848 HANDLE h
= (HANDLE
)_get_osfhandle (s
);
7849 DWORD pipe_mode
= PIPE_NOWAIT
;
7851 if (!SetNamedPipeHandleState (h
, &pipe_mode
, NULL
, NULL
))
7853 DebPrint (("SetNamedPipeHandleState: %lu\n", GetLastError ()));
7854 return SOCKET_ERROR
;
7856 fd_info
[s
].flags
|= FILE_NDELAY
;
7862 return SOCKET_ERROR
;
7866 return SOCKET_ERROR
;
7870 /* Shadow main io functions: we need to handle pipes and sockets more
7884 if (fd
< MAXDESC
&& fd_info
[fd
].cp
)
7886 child_process
* cp
= fd_info
[fd
].cp
;
7888 fd_info
[fd
].cp
= NULL
;
7890 if (CHILD_ACTIVE (cp
))
7892 /* if last descriptor to active child_process then cleanup */
7894 for (i
= 0; i
< MAXDESC
; i
++)
7898 if (fd_info
[i
].cp
== cp
)
7903 if (fd_info
[fd
].flags
& FILE_SOCKET
)
7905 if (winsock_lib
== NULL
) emacs_abort ();
7907 pfn_shutdown (SOCK_HANDLE (fd
), 2);
7908 rc
= pfn_closesocket (SOCK_HANDLE (fd
));
7910 winsock_inuse
--; /* count open sockets */
7912 /* If the process handle is NULL, it's either a socket
7913 or serial connection, or a subprocess that was
7914 already reaped by reap_subprocess, but whose
7915 resources were not yet freed, because its output was
7916 not fully read yet by the time it was reaped. (This
7917 usually happens with async subprocesses whose output
7918 is being read by Emacs.) Otherwise, this process was
7919 not reaped yet, so we set its FD to a negative value
7920 to make sure sys_select will eventually get to
7921 calling the SIGCHLD handler for it, which will then
7922 invoke waitpid and reap_subprocess. */
7923 if (cp
->procinfo
.hProcess
== NULL
)
7931 if (fd
>= 0 && fd
< MAXDESC
)
7932 fd_info
[fd
].flags
= 0;
7934 /* Note that sockets do not need special treatment here (at least on
7935 NT and Windows 95 using the standard tcp/ip stacks) - it appears that
7936 closesocket is equivalent to CloseHandle, which is to be expected
7937 because socket handles are fully fledged kernel handles. */
7949 if (new_fd
>= 0 && new_fd
< MAXDESC
)
7951 /* duplicate our internal info as well */
7952 fd_info
[new_fd
] = fd_info
[fd
];
7958 sys_dup2 (int src
, int dst
)
7962 if (dst
< 0 || dst
>= MAXDESC
)
7968 /* make sure we close the destination first if it's a pipe or socket */
7969 if (src
!= dst
&& fd_info
[dst
].flags
!= 0)
7972 rc
= _dup2 (src
, dst
);
7975 /* duplicate our internal info as well */
7976 fd_info
[dst
] = fd_info
[src
];
7982 pipe2 (int * phandles
, int pipe2_flags
)
7987 eassert (pipe2_flags
== (O_BINARY
| O_CLOEXEC
));
7989 /* make pipe handles non-inheritable; when we spawn a child, we
7990 replace the relevant handle with an inheritable one. Also put
7991 pipes into binary mode; we will do text mode translation ourselves
7993 rc
= _pipe (phandles
, 0, _O_NOINHERIT
| _O_BINARY
);
7997 /* Protect against overflow, since Windows can open more handles than
7998 our fd_info array has room for. */
7999 if (phandles
[0] >= MAXDESC
|| phandles
[1] >= MAXDESC
)
8001 _close (phandles
[0]);
8002 _close (phandles
[1]);
8008 flags
= FILE_PIPE
| FILE_READ
| FILE_BINARY
;
8009 fd_info
[phandles
[0]].flags
= flags
;
8011 flags
= FILE_PIPE
| FILE_WRITE
| FILE_BINARY
;
8012 fd_info
[phandles
[1]].flags
= flags
;
8019 /* Function to do blocking read of one byte, needed to implement
8020 select. It is only allowed on communication ports, sockets, or
8023 _sys_read_ahead (int fd
)
8028 if (fd
< 0 || fd
>= MAXDESC
)
8029 return STATUS_READ_ERROR
;
8031 cp
= fd_info
[fd
].cp
;
8033 if (cp
== NULL
|| cp
->fd
!= fd
|| cp
->status
!= STATUS_READ_READY
)
8034 return STATUS_READ_ERROR
;
8036 if ((fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SERIAL
| FILE_SOCKET
)) == 0
8037 || (fd_info
[fd
].flags
& FILE_READ
) == 0)
8039 DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe, serial port, or socket!\n", fd
));
8043 if ((fd_info
[fd
].flags
& FILE_CONNECT
) != 0)
8044 DebPrint (("_sys_read_ahead: read requested from fd %d, which waits for async connect!\n", fd
));
8045 cp
->status
= STATUS_READ_IN_PROGRESS
;
8047 if (fd_info
[fd
].flags
& FILE_PIPE
)
8049 rc
= _read (fd
, &cp
->chr
, sizeof (char));
8051 /* Give subprocess time to buffer some more output for us before
8052 reporting that input is available; we need this because Windows 95
8053 connects DOS programs to pipes by making the pipe appear to be
8054 the normal console stdout - as a result most DOS programs will
8055 write to stdout without buffering, ie. one character at a
8056 time. Even some W32 programs do this - "dir" in a command
8057 shell on NT is very slow if we don't do this. */
8060 int wait
= w32_pipe_read_delay
;
8066 /* Yield remainder of our time slice, effectively giving a
8067 temporary priority boost to the child process. */
8071 else if (fd_info
[fd
].flags
& FILE_SERIAL
)
8073 HANDLE hnd
= fd_info
[fd
].hnd
;
8074 OVERLAPPED
*ovl
= &fd_info
[fd
].cp
->ovl_read
;
8077 /* Configure timeouts for blocking read. */
8078 if (!GetCommTimeouts (hnd
, &ct
))
8080 cp
->status
= STATUS_READ_ERROR
;
8081 return STATUS_READ_ERROR
;
8083 ct
.ReadIntervalTimeout
= 0;
8084 ct
.ReadTotalTimeoutMultiplier
= 0;
8085 ct
.ReadTotalTimeoutConstant
= 0;
8086 if (!SetCommTimeouts (hnd
, &ct
))
8088 cp
->status
= STATUS_READ_ERROR
;
8089 return STATUS_READ_ERROR
;
8092 if (!ReadFile (hnd
, &cp
->chr
, sizeof (char), (DWORD
*) &rc
, ovl
))
8094 if (GetLastError () != ERROR_IO_PENDING
)
8096 cp
->status
= STATUS_READ_ERROR
;
8097 return STATUS_READ_ERROR
;
8099 if (!GetOverlappedResult (hnd
, ovl
, (DWORD
*) &rc
, TRUE
))
8101 cp
->status
= STATUS_READ_ERROR
;
8102 return STATUS_READ_ERROR
;
8106 else if (fd_info
[fd
].flags
& FILE_SOCKET
)
8108 unsigned long nblock
= 0;
8109 /* We always want this to block, so temporarily disable NDELAY. */
8110 if (fd_info
[fd
].flags
& FILE_NDELAY
)
8111 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
8113 rc
= pfn_recv (SOCK_HANDLE (fd
), &cp
->chr
, sizeof (char), 0);
8115 if (fd_info
[fd
].flags
& FILE_NDELAY
)
8118 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
8122 if (rc
== sizeof (char))
8123 cp
->status
= STATUS_READ_SUCCEEDED
;
8125 cp
->status
= STATUS_READ_FAILED
;
8131 _sys_wait_accept (int fd
)
8137 if (fd
< 0 || fd
>= MAXDESC
)
8138 return STATUS_READ_ERROR
;
8140 cp
= fd_info
[fd
].cp
;
8142 if (cp
== NULL
|| cp
->fd
!= fd
|| cp
->status
!= STATUS_READ_READY
)
8143 return STATUS_READ_ERROR
;
8145 cp
->status
= STATUS_READ_FAILED
;
8147 hEv
= pfn_WSACreateEvent ();
8148 rc
= pfn_WSAEventSelect (SOCK_HANDLE (fd
), hEv
, FD_ACCEPT
);
8149 if (rc
!= SOCKET_ERROR
)
8152 rc
= WaitForSingleObject (hEv
, 500);
8154 } while (rc
== WAIT_TIMEOUT
8155 && cp
->status
!= STATUS_READ_ERROR
8157 pfn_WSAEventSelect (SOCK_HANDLE (fd
), NULL
, 0);
8158 if (rc
== WAIT_OBJECT_0
)
8159 cp
->status
= STATUS_READ_SUCCEEDED
;
8161 pfn_WSACloseEvent (hEv
);
8167 _sys_wait_connect (int fd
)
8173 if (fd
< 0 || fd
>= MAXDESC
)
8174 return STATUS_READ_ERROR
;
8176 cp
= fd_info
[fd
].cp
;
8177 if (cp
== NULL
|| cp
->fd
!= fd
|| cp
->status
!= STATUS_READ_READY
)
8178 return STATUS_READ_ERROR
;
8180 cp
->status
= STATUS_READ_FAILED
;
8182 hEv
= pfn_WSACreateEvent ();
8183 rc
= pfn_WSAEventSelect (SOCK_HANDLE (fd
), hEv
, FD_CONNECT
);
8184 if (rc
!= SOCKET_ERROR
)
8187 rc
= WaitForSingleObject (hEv
, 500);
8189 } while (rc
== WAIT_TIMEOUT
8190 && cp
->status
!= STATUS_READ_ERROR
8192 if (rc
== WAIT_OBJECT_0
)
8194 /* We've got an event, but it could be a successful
8195 connection, or it could be a failure. Find out
8197 WSANETWORKEVENTS events
;
8199 pfn_WSAEnumNetworkEvents (SOCK_HANDLE (fd
), hEv
, &events
);
8200 if ((events
.lNetworkEvents
& FD_CONNECT
) != 0
8201 && events
.iErrorCode
[FD_CONNECT_BIT
])
8203 cp
->status
= STATUS_CONNECT_FAILED
;
8204 cp
->errcode
= events
.iErrorCode
[FD_CONNECT_BIT
];
8208 cp
->status
= STATUS_READ_SUCCEEDED
;
8212 pfn_WSAEventSelect (SOCK_HANDLE (fd
), NULL
, 0);
8215 pfn_WSACloseEvent (hEv
);
8221 sys_read (int fd
, char * buffer
, unsigned int count
)
8226 char * orig_buffer
= buffer
;
8234 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SOCKET
| FILE_SERIAL
))
8236 child_process
*cp
= fd_info
[fd
].cp
;
8238 if ((fd_info
[fd
].flags
& FILE_READ
) == 0)
8246 /* re-read CR carried over from last read */
8247 if (fd_info
[fd
].flags
& FILE_LAST_CR
)
8249 if (fd_info
[fd
].flags
& FILE_BINARY
) emacs_abort ();
8253 fd_info
[fd
].flags
&= ~FILE_LAST_CR
;
8256 /* presence of a child_process structure means we are operating in
8257 non-blocking mode - otherwise we just call _read directly.
8258 Note that the child_process structure might be missing because
8259 reap_subprocess has been called; in this case the pipe is
8260 already broken, so calling _read on it is okay. */
8263 int current_status
= cp
->status
;
8265 switch (current_status
)
8267 case STATUS_READ_FAILED
:
8268 case STATUS_READ_ERROR
:
8269 /* report normal EOF if nothing in buffer */
8271 fd_info
[fd
].flags
|= FILE_AT_EOF
;
8274 case STATUS_READ_READY
:
8275 case STATUS_READ_IN_PROGRESS
:
8276 DebPrint (("sys_read called when read is in progress\n"));
8277 errno
= EWOULDBLOCK
;
8280 case STATUS_READ_SUCCEEDED
:
8281 /* consume read-ahead char */
8282 *buffer
++ = cp
->chr
;
8285 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
8286 ResetEvent (cp
->char_avail
);
8288 case STATUS_READ_ACKNOWLEDGED
:
8289 case STATUS_CONNECT_FAILED
:
8293 DebPrint (("sys_read: bad status %d\n", current_status
));
8298 if (fd_info
[fd
].flags
& FILE_PIPE
)
8300 PeekNamedPipe ((HANDLE
) _get_osfhandle (fd
), NULL
, 0, NULL
, &waiting
, NULL
);
8301 to_read
= min (waiting
, (DWORD
) count
);
8304 nchars
+= _read (fd
, buffer
, to_read
);
8306 else if (fd_info
[fd
].flags
& FILE_SERIAL
)
8308 HANDLE hnd
= fd_info
[fd
].hnd
;
8309 OVERLAPPED
*ovl
= &fd_info
[fd
].cp
->ovl_read
;
8315 /* Configure timeouts for non-blocking read. */
8316 if (!GetCommTimeouts (hnd
, &ct
))
8321 ct
.ReadIntervalTimeout
= MAXDWORD
;
8322 ct
.ReadTotalTimeoutMultiplier
= 0;
8323 ct
.ReadTotalTimeoutConstant
= 0;
8324 if (!SetCommTimeouts (hnd
, &ct
))
8330 if (!ResetEvent (ovl
->hEvent
))
8335 if (!ReadFile (hnd
, buffer
, count
, (DWORD
*) &rc
, ovl
))
8337 if (GetLastError () != ERROR_IO_PENDING
)
8342 if (!GetOverlappedResult (hnd
, ovl
, (DWORD
*) &rc
, TRUE
))
8351 else /* FILE_SOCKET */
8353 if (winsock_lib
== NULL
) emacs_abort ();
8355 /* When a non-blocking 'connect' call fails,
8356 wait_reading_process_output detects this by calling
8357 'getpeername', and then attempts to obtain the connection
8358 error code by trying to read 1 byte from the socket. If
8359 we try to serve that read by calling 'recv' below, the
8360 error we get is a generic WSAENOTCONN, not the actual
8361 connection error. So instead, we use the actual error
8362 code stashed by '_sys_wait_connect' in cp->errcode.
8363 Alternatively, we could have used 'getsockopt', like on
8364 GNU/Linux, but: (a) I have no idea whether the winsock
8365 version could hang, as it does "on some systems" (see the
8366 comment in process.c); and (b) 'getsockopt' on Windows is
8367 documented to clear the socket error for the entire
8368 process, which I'm not sure is TRT; FIXME. */
8369 if (current_status
== STATUS_CONNECT_FAILED
8370 && (fd_info
[fd
].flags
& FILE_CONNECT
) != 0
8371 && cp
->errcode
!= 0)
8373 pfn_WSASetLastError (cp
->errcode
);
8377 /* Do the equivalent of a non-blocking read. */
8378 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONREAD
, &waiting
);
8379 if (waiting
== 0 && nchars
== 0)
8381 errno
= EWOULDBLOCK
;
8387 /* always use binary mode for sockets */
8388 int res
= pfn_recv (SOCK_HANDLE (fd
), buffer
, count
, 0);
8389 if (res
== SOCKET_ERROR
)
8392 DebPrint (("sys_read.recv failed with error %d on socket %ld\n",
8393 errno
, SOCK_HANDLE (fd
)));
8402 int nread
= _read (fd
, buffer
, count
);
8405 else if (nchars
== 0)
8410 fd_info
[fd
].flags
|= FILE_AT_EOF
;
8411 /* Perform text mode translation if required. */
8412 else if ((fd_info
[fd
].flags
& FILE_BINARY
) == 0)
8414 nchars
= crlf_to_lf (nchars
, orig_buffer
);
8415 /* If buffer contains only CR, return that. To be absolutely
8416 sure we should attempt to read the next char, but in
8417 practice a CR to be followed by LF would not appear by
8418 itself in the buffer. */
8419 if (nchars
> 1 && orig_buffer
[nchars
- 1] == 0x0d)
8421 fd_info
[fd
].flags
|= FILE_LAST_CR
;
8427 nchars
= _read (fd
, buffer
, count
);
8432 /* From w32xfns.c */
8433 extern HANDLE interrupt_handle
;
8436 sys_write (int fd
, const void * buffer
, unsigned int count
)
8447 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SOCKET
| FILE_SERIAL
))
8449 if ((fd_info
[fd
].flags
& FILE_WRITE
) == 0)
8455 /* Perform text mode translation if required. */
8456 if ((fd_info
[fd
].flags
& FILE_BINARY
) == 0)
8459 const unsigned char * src
= buffer
;
8460 unsigned char * dst
;
8463 SAFE_NALLOCA (tmpbuf
, 2, count
);
8468 unsigned char *next
;
8469 /* Copy next line or remaining bytes. */
8470 next
= _memccpy (dst
, src
, '\n', nbytes
);
8473 /* Copied one line ending with '\n'. */
8474 int copied
= next
- dst
;
8477 /* Insert '\r' before '\n'. */
8484 /* Copied remaining partial line -> now finished. */
8491 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& FILE_SERIAL
)
8493 HANDLE hnd
= (HANDLE
) _get_osfhandle (fd
);
8494 OVERLAPPED
*ovl
= &fd_info
[fd
].cp
->ovl_write
;
8495 HANDLE wait_hnd
[2] = { interrupt_handle
, ovl
->hEvent
};
8498 /* This is async (a.k.a. "overlapped") I/O, so the return value
8499 of FALSE from WriteFile means either an error or the output
8500 will be completed asynchronously (ERROR_IO_PENDING). */
8501 if (!WriteFile (hnd
, buffer
, count
, (DWORD
*) &nchars
, ovl
))
8503 if (GetLastError () != ERROR_IO_PENDING
)
8510 /* Wait for the write to complete, and watch C-g while
8512 if (detect_input_pending ())
8513 active
= MsgWaitForMultipleObjects (2, wait_hnd
, FALSE
,
8514 INFINITE
, QS_ALLINPUT
);
8516 active
= WaitForMultipleObjects (2, wait_hnd
, FALSE
, INFINITE
);
8520 /* User pressed C-g, cancel write, then leave.
8521 Don't bother cleaning up as we may only get stuck
8522 in buggy drivers. */
8523 PurgeComm (hnd
, PURGE_TXABORT
| PURGE_TXCLEAR
);
8525 errno
= EIO
; /* Why not EINTR? */
8528 case WAIT_OBJECT_0
+ 1:
8529 if (!GetOverlappedResult (hnd
, ovl
, (DWORD
*) &nchars
, TRUE
))
8539 else if (fd
< MAXDESC
&& fd_info
[fd
].flags
& FILE_SOCKET
)
8541 unsigned long nblock
= 0;
8542 if (winsock_lib
== NULL
) emacs_abort ();
8544 /* TODO: implement select() properly so non-blocking I/O works. */
8545 /* For now, make sure the write blocks. */
8546 if (fd_info
[fd
].flags
& FILE_NDELAY
)
8547 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
8549 nchars
= pfn_send (SOCK_HANDLE (fd
), buffer
, count
, 0);
8551 /* Set the socket back to non-blocking if it was before,
8552 for other operations that support it. */
8553 if (fd_info
[fd
].flags
& FILE_NDELAY
)
8556 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
8559 if (nchars
== SOCKET_ERROR
)
8561 DebPrint (("sys_write.send failed with error %d on socket %ld\n",
8562 pfn_WSAGetLastError (), SOCK_HANDLE (fd
)));
8568 /* Some networked filesystems don't like too large writes, so
8569 break them into smaller chunks. See the Comments section of
8570 the MSDN documentation of WriteFile for details behind the
8571 choice of the value of CHUNK below. See also the thread
8572 http://thread.gmane.org/gmane.comp.version-control.git/145294
8573 in the git mailing list. */
8574 const unsigned char *p
= buffer
;
8575 const unsigned chunk
= 30 * 1024 * 1024;
8580 unsigned this_chunk
= count
< chunk
? count
: chunk
;
8581 int n
= _write (fd
, p
, this_chunk
);
8586 /* When there's no buffer space in a pipe that is in the
8587 non-blocking mode, _write returns ENOSPC. We return
8588 EAGAIN instead, which should trigger the logic in
8589 send_process that enters waiting loop and calls
8590 wait_reading_process_output to allow process input to
8591 be accepted during the wait. Those calls to
8592 wait_reading_process_output allow sys_select to
8593 notice when process input becomes available, thus
8594 avoiding deadlock whereby each side of the pipe is
8595 blocked on write, waiting for the other party to read
8596 its end of the pipe. */
8599 && ((fd_info
[fd
].flags
& (FILE_PIPE
| FILE_NDELAY
))
8600 == (FILE_PIPE
| FILE_NDELAY
)))
8605 else if (n
< this_chunk
)
8617 /* Emulation of SIOCGIFCONF and getifaddrs, see process.c. */
8619 extern Lisp_Object
conv_sockaddr_to_lisp (struct sockaddr
*, int);
8621 /* Return information about network interface IFNAME, or about all
8622 interfaces (if IFNAME is nil). */
8624 network_interface_get_info (Lisp_Object ifname
)
8626 ULONG ainfo_len
= sizeof (IP_ADAPTER_INFO
);
8627 IP_ADAPTER_INFO
*adapter
, *ainfo
= xmalloc (ainfo_len
);
8628 DWORD retval
= get_adapters_info (ainfo
, &ainfo_len
);
8629 Lisp_Object res
= Qnil
;
8631 if (retval
== ERROR_BUFFER_OVERFLOW
)
8633 ainfo
= xrealloc (ainfo
, ainfo_len
);
8634 retval
= get_adapters_info (ainfo
, &ainfo_len
);
8637 if (retval
== ERROR_SUCCESS
)
8639 int eth_count
= 0, tr_count
= 0, fddi_count
= 0, ppp_count
= 0;
8640 int sl_count
= 0, wlan_count
= 0, lo_count
= 0, ifx_count
= 0;
8642 struct sockaddr_in sa
;
8644 /* For the below, we need some winsock functions, so make sure
8645 the winsock DLL is loaded. If we cannot successfully load
8646 it, they will have no use of the information we provide,
8648 if (!winsock_lib
&& !init_winsock (1))
8651 for (adapter
= ainfo
; adapter
; adapter
= adapter
->Next
)
8653 char namebuf
[MAX_ADAPTER_NAME_LENGTH
+ 4];
8655 /* Present Unix-compatible interface names, instead of the
8656 Windows names, which are really GUIDs not readable by
8658 static const char *ifmt
[] = {
8659 "eth%d", "tr%d", "fddi%d", "ppp%d", "sl%d", "wlan%d",
8674 switch (adapter
->Type
)
8676 case MIB_IF_TYPE_ETHERNET
:
8677 /* Windows before Vista reports wireless adapters as
8678 Ethernet. Work around by looking at the Description
8680 if (strstr (adapter
->Description
, "Wireless "))
8683 if_num
= wlan_count
++;
8687 ifmt_idx
= ETHERNET
;
8688 if_num
= eth_count
++;
8691 case MIB_IF_TYPE_TOKENRING
:
8692 ifmt_idx
= TOKENRING
;
8693 if_num
= tr_count
++;
8695 case MIB_IF_TYPE_FDDI
:
8697 if_num
= fddi_count
++;
8699 case MIB_IF_TYPE_PPP
:
8701 if_num
= ppp_count
++;
8703 case MIB_IF_TYPE_SLIP
:
8705 if_num
= sl_count
++;
8707 case IF_TYPE_IEEE80211
:
8709 if_num
= wlan_count
++;
8711 case MIB_IF_TYPE_LOOPBACK
:
8714 ifmt_idx
= LOOPBACK
;
8715 if_num
= lo_count
++;
8721 ifmt_idx
= OTHER_IF
;
8722 if_num
= ifx_count
++;
8725 if (ifmt_idx
== NONE
)
8727 sprintf (namebuf
, ifmt
[ifmt_idx
], if_num
);
8729 sa
.sin_family
= AF_INET
;
8730 ip_addr
= sys_inet_addr (adapter
->IpAddressList
.IpAddress
.String
);
8731 if (ip_addr
== INADDR_NONE
)
8733 /* Bogus address, skip this interface. */
8736 sa
.sin_addr
.s_addr
= ip_addr
;
8739 res
= Fcons (Fcons (build_string (namebuf
),
8740 conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8741 sizeof (struct sockaddr
))),
8743 else if (strcmp (namebuf
, SSDATA (ifname
)) == 0)
8745 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
8746 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
8747 Lisp_Object flags
= Qnil
;
8751 /* Flags. We guess most of them by type, since the
8752 Windows flags are different and hard to get by. */
8753 flags
= Fcons (intern ("up"), flags
);
8754 if (ifmt_idx
== ETHERNET
|| ifmt_idx
== WLAN
)
8756 flags
= Fcons (intern ("broadcast"), flags
);
8757 flags
= Fcons (intern ("multicast"), flags
);
8759 flags
= Fcons (intern ("running"), flags
);
8760 if (ifmt_idx
== PPP
)
8762 flags
= Fcons (intern ("pointopoint"), flags
);
8763 flags
= Fcons (intern ("noarp"), flags
);
8765 if (adapter
->HaveWins
)
8766 flags
= Fcons (intern ("WINS"), flags
);
8767 if (adapter
->DhcpEnabled
)
8768 flags
= Fcons (intern ("dynamic"), flags
);
8770 res
= Fcons (flags
, res
);
8772 /* Hardware address and its family. */
8773 for (n
= 0; n
< adapter
->AddressLength
; n
++)
8774 p
->contents
[n
] = make_number ((int) adapter
->Address
[n
]);
8775 /* Windows does not support AF_LINK or AF_PACKET family
8776 of addresses. Use an arbitrary family number that is
8777 identical to what GNU/Linux returns. */
8778 res
= Fcons (Fcons (make_number (1), hwaddr
), res
);
8781 sa
.sin_family
= AF_INET
;
8782 net_mask
= sys_inet_addr (adapter
->IpAddressList
.IpMask
.String
);
8783 if (net_mask
!= INADDR_NONE
)
8785 sa
.sin_addr
.s_addr
= net_mask
;
8787 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8788 sizeof (struct sockaddr
)),
8792 res
= Fcons (Qnil
, res
);
8794 sa
.sin_family
= AF_INET
;
8795 if (ip_addr
!= INADDR_NONE
)
8797 /* Broadcast address is only reported by
8798 GetAdaptersAddresses, which is of limited
8799 availability. Generate it on our own. */
8800 u_long bcast_addr
= (ip_addr
& net_mask
) | ~net_mask
;
8802 sa
.sin_addr
.s_addr
= bcast_addr
;
8804 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8805 sizeof (struct sockaddr
)),
8809 sa
.sin_addr
.s_addr
= ip_addr
;
8811 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8812 sizeof (struct sockaddr
)),
8816 res
= Fcons (Qnil
, Fcons (Qnil
, res
));
8819 /* GetAdaptersInfo is documented to not report loopback
8820 interfaces, so we generate one out of thin air. */
8823 sa
.sin_family
= AF_INET
;
8827 sa
.sin_addr
.s_addr
= sys_inet_addr ("127.0.0.1");
8828 res
= Fcons (Fcons (build_string ("lo"),
8829 conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8830 sizeof (struct sockaddr
))),
8833 else if (strcmp (SSDATA (ifname
), "lo") == 0)
8835 res
= Fcons (Fcons (intern ("running"),
8836 Fcons (intern ("loopback"),
8837 Fcons (intern ("up"), Qnil
))), Qnil
);
8838 /* 772 is what 3 different GNU/Linux systems report for
8839 the loopback interface. */
8840 res
= Fcons (Fcons (make_number (772),
8841 Fmake_vector (make_number (6),
8844 sa
.sin_addr
.s_addr
= sys_inet_addr ("255.0.0.0");
8845 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8846 sizeof (struct sockaddr
)),
8848 sa
.sin_addr
.s_addr
= sys_inet_addr ("0.0.0.0");
8849 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8850 sizeof (struct sockaddr
)),
8852 sa
.sin_addr
.s_addr
= sys_inet_addr ("127.0.0.1");
8853 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8854 sizeof (struct sockaddr
)),
8867 network_interface_list (void)
8869 return network_interface_get_info (Qnil
);
8873 network_interface_info (Lisp_Object ifname
)
8875 CHECK_STRING (ifname
);
8876 return network_interface_get_info (ifname
);
8880 /* The Windows CRT functions are "optimized for speed", so they don't
8881 check for timezone and DST changes if they were last called less
8882 than 1 minute ago (see http://support.microsoft.com/kb/821231). So
8883 all Emacs features that repeatedly call time functions (e.g.,
8884 display-time) are in real danger of missing timezone and DST
8885 changes. Calling tzset before each localtime call fixes that. */
8887 sys_localtime (const time_t *t
)
8890 return localtime (t
);
8895 /* Try loading LIBRARY_ID from the file(s) specified in
8896 Vdynamic_library_alist. If the library is loaded successfully,
8897 return the handle of the DLL, and record the filename in the
8898 property :loaded-from of LIBRARY_ID. If the library could not be
8899 found, or when it was already loaded (because the handle is not
8900 recorded anywhere, and so is lost after use), return NULL.
8902 We could also save the handle in :loaded-from, but currently
8903 there's no use case for it. */
8905 w32_delayed_load (Lisp_Object library_id
)
8907 HMODULE dll_handle
= NULL
;
8909 CHECK_SYMBOL (library_id
);
8911 if (CONSP (Vdynamic_library_alist
)
8912 && NILP (Fassq (library_id
, Vlibrary_cache
)))
8914 Lisp_Object found
= Qnil
;
8915 Lisp_Object dlls
= Fassq (library_id
, Vdynamic_library_alist
);
8918 for (dlls
= XCDR (dlls
); CONSP (dlls
); dlls
= XCDR (dlls
))
8920 Lisp_Object dll
= XCAR (dlls
);
8921 char name
[MAX_UTF8_PATH
];
8925 dll
= ENCODE_FILE (dll
);
8926 if (w32_unicode_filenames
)
8928 wchar_t name_w
[MAX_PATH
];
8930 filename_to_utf16 (SSDATA (dll
), name_w
);
8931 dll_handle
= LoadLibraryW (name_w
);
8934 res
= GetModuleFileNameW (dll_handle
, name_w
,
8937 filename_from_utf16 (name_w
, name
);
8942 char name_a
[MAX_PATH
];
8944 filename_to_ansi (SSDATA (dll
), name_a
);
8945 dll_handle
= LoadLibraryA (name_a
);
8948 res
= GetModuleFileNameA (dll_handle
, name_a
,
8951 filename_from_ansi (name_a
, name
);
8956 ptrdiff_t len
= strlen (name
);
8959 /* Possibly truncated */
8960 ? make_specified_string (name
, -1, len
, 1)
8962 /* This prevents thread start and end notifications
8963 from being sent to the DLL, for every thread we
8964 start. We don't need those notifications because
8965 threads we create never use any of these DLLs, only
8966 the main thread uses them. This is supposed to
8967 speed up thread creation. */
8968 DisableThreadLibraryCalls (dll_handle
);
8973 Fput (library_id
, QCloaded_from
, found
);
8981 check_windows_init_file (void)
8983 /* A common indication that Emacs is not installed properly is when
8984 it cannot find the Windows installation file. If this file does
8985 not exist in the expected place, tell the user. */
8987 if (!noninteractive
&& !inhibit_window_system
8988 /* Vload_path is not yet initialized when we are loading
8990 && NILP (Vpurify_flag
))
8992 Lisp_Object init_file
;
8995 /* Implementation note: this function runs early during Emacs
8996 startup, before startup.el is run. So Vload_path is still in
8997 its initial unibyte form, but it holds UTF-8 encoded file
8998 names, since init_callproc was already called. So we do not
8999 need to ENCODE_FILE here, but we do need to convert the file
9000 names from UTF-8 to ANSI. */
9001 init_file
= build_string ("term/w32-win");
9002 fd
= openp (Vload_path
, init_file
, Fget_load_suffixes (), NULL
, Qnil
, 0);
9005 Lisp_Object load_path_print
= Fprin1_to_string (Vload_path
, Qnil
);
9006 char *init_file_name
= SDATA (init_file
);
9007 char *load_path
= SDATA (load_path_print
);
9008 char *buffer
= alloca (1024
9009 + strlen (init_file_name
)
9010 + strlen (load_path
));
9015 "The Emacs Windows initialization file \"%s.el\" "
9016 "could not be found in your Emacs installation. "
9017 "Emacs checked the following directories for this file:\n"
9019 "When Emacs cannot find this file, it usually means that it "
9020 "was not installed properly, or its distribution file was "
9021 "not unpacked properly.\nSee the README.W32 file in the "
9022 "top-level Emacs directory for more information.",
9023 init_file_name
, load_path
);
9024 needed
= pMultiByteToWideChar (CP_UTF8
, MB_ERR_INVALID_CHARS
, buffer
,
9028 wchar_t *msg_w
= alloca ((needed
+ 1) * sizeof (wchar_t));
9030 pMultiByteToWideChar (CP_UTF8
, MB_ERR_INVALID_CHARS
, buffer
, -1,
9032 needed
= pWideCharToMultiByte (CP_ACP
, 0, msg_w
, -1,
9033 NULL
, 0, NULL
, NULL
);
9036 char *msg_a
= alloca (needed
+ 1);
9038 pWideCharToMultiByte (CP_ACP
, 0, msg_w
, -1, msg_a
, needed
,
9045 "Emacs Abort Dialog",
9046 MB_OK
| MB_ICONEXCLAMATION
| MB_TASKMODAL
);
9047 /* Use the low-level system abort. */
9058 term_ntproc (int ignored
)
9064 /* shutdown the socket interface if necessary */
9071 init_ntproc (int dumping
)
9073 sigset_t initial_mask
= 0;
9075 /* Initialize the socket interface now if available and requested by
9076 the user by defining PRELOAD_WINSOCK; otherwise loading will be
9077 delayed until open-network-stream is called (w32-has-winsock can
9078 also be used to dynamically load or reload winsock).
9080 Conveniently, init_environment is called before us, so
9081 PRELOAD_WINSOCK can be set in the registry. */
9083 /* Always initialize this correctly. */
9086 if (getenv ("PRELOAD_WINSOCK") != NULL
)
9087 init_winsock (TRUE
);
9089 /* Initial preparation for subprocess support: replace our standard
9090 handles with non-inheritable versions. */
9093 HANDLE stdin_save
= INVALID_HANDLE_VALUE
;
9094 HANDLE stdout_save
= INVALID_HANDLE_VALUE
;
9095 HANDLE stderr_save
= INVALID_HANDLE_VALUE
;
9097 parent
= GetCurrentProcess ();
9099 /* ignore errors when duplicating and closing; typically the
9100 handles will be invalid when running as a gui program. */
9101 DuplicateHandle (parent
,
9102 GetStdHandle (STD_INPUT_HANDLE
),
9107 DUPLICATE_SAME_ACCESS
);
9109 DuplicateHandle (parent
,
9110 GetStdHandle (STD_OUTPUT_HANDLE
),
9115 DUPLICATE_SAME_ACCESS
);
9117 DuplicateHandle (parent
,
9118 GetStdHandle (STD_ERROR_HANDLE
),
9123 DUPLICATE_SAME_ACCESS
);
9129 if (stdin_save
!= INVALID_HANDLE_VALUE
)
9130 _open_osfhandle ((intptr_t) stdin_save
, O_TEXT
);
9132 _open ("nul", O_TEXT
| O_NOINHERIT
| O_RDONLY
);
9135 if (stdout_save
!= INVALID_HANDLE_VALUE
)
9136 _open_osfhandle ((intptr_t) stdout_save
, O_TEXT
);
9138 _open ("nul", O_TEXT
| O_NOINHERIT
| O_WRONLY
);
9141 if (stderr_save
!= INVALID_HANDLE_VALUE
)
9142 _open_osfhandle ((intptr_t) stderr_save
, O_TEXT
);
9144 _open ("nul", O_TEXT
| O_NOINHERIT
| O_WRONLY
);
9148 /* unfortunately, atexit depends on implementation of malloc */
9149 /* atexit (term_ntproc); */
9152 /* Make sure we start with all signals unblocked. */
9153 sigprocmask (SIG_SETMASK
, &initial_mask
, NULL
);
9154 signal (SIGABRT
, term_ntproc
);
9158 /* determine which drives are fixed, for GetCachedVolumeInformation */
9160 /* GetDriveType must have trailing backslash. */
9161 char drive
[] = "A:\\";
9163 /* Loop over all possible drive letters */
9164 while (*drive
<= 'Z')
9166 /* Record if this drive letter refers to a fixed drive. */
9167 fixed_drives
[DRIVE_INDEX (*drive
)] =
9168 (GetDriveType (drive
) == DRIVE_FIXED
);
9173 /* Reset the volume info cache. */
9174 volume_cache
= NULL
;
9179 shutdown_handler ensures that buffers' autosave files are
9180 up to date when the user logs off, or the system shuts down.
9183 shutdown_handler (DWORD type
)
9185 /* Ctrl-C and Ctrl-Break are already suppressed, so don't handle them. */
9186 if (type
== CTRL_CLOSE_EVENT
/* User closes console window. */
9187 || type
== CTRL_LOGOFF_EVENT
/* User logs off. */
9188 || type
== CTRL_SHUTDOWN_EVENT
) /* User shutsdown. */
9190 /* Shut down cleanly, making sure autosave files are up to date. */
9191 shut_down_emacs (0, Qnil
);
9194 /* Allow other handlers to handle this signal. */
9198 /* On Windows 9X, load UNICOWS.DLL and return its handle, or die. On
9199 NT, return a handle to GDI32.DLL. */
9201 maybe_load_unicows_dll (void)
9203 if (os_subtype
== OS_9X
)
9205 HANDLE ret
= LoadLibrary ("Unicows.dll");
9208 /* These two functions are present on Windows 9X as stubs
9209 that always fail. We need the real implementations from
9210 UNICOWS.DLL, so we must call these functions through
9211 pointers, and assign the correct addresses to these
9212 pointers at program startup (see emacs.c, which calls
9213 this function early on). */
9214 pMultiByteToWideChar
= GetProcAddress (ret
, "MultiByteToWideChar");
9215 pWideCharToMultiByte
= GetProcAddress (ret
, "WideCharToMultiByte");
9222 button
= MessageBox (NULL
,
9223 "Emacs cannot load the UNICOWS.DLL library.\n"
9224 "This library is essential for using Emacs\n"
9225 "on this system. You need to install it.\n\n"
9226 "Emacs will exit when you click OK.",
9227 "Emacs cannot load UNICOWS.DLL",
9228 MB_ICONERROR
| MB_TASKMODAL
9229 | MB_SETFOREGROUND
| MB_OK
);
9240 /* On NT family of Windows, these two functions are always
9241 linked in, so we just assign their addresses to the 2
9242 pointers; no need for the LoadLibrary dance. */
9243 pMultiByteToWideChar
= MultiByteToWideChar
;
9244 pWideCharToMultiByte
= WideCharToMultiByte
;
9245 return LoadLibrary ("Gdi32.dll");
9250 globals_of_w32 is used to initialize those global variables that
9251 must always be initialized on startup even when the global variable
9252 initialized is non zero (see the function main in emacs.c).
9255 globals_of_w32 (void)
9257 HMODULE kernel32
= GetModuleHandle ("kernel32.dll");
9259 get_process_times_fn
= (GetProcessTimes_Proc
)
9260 GetProcAddress (kernel32
, "GetProcessTimes");
9262 DEFSYM (QCloaded_from
, ":loaded-from");
9264 g_b_init_is_windows_9x
= 0;
9265 g_b_init_open_process_token
= 0;
9266 g_b_init_get_token_information
= 0;
9267 g_b_init_lookup_account_sid
= 0;
9268 g_b_init_get_sid_sub_authority
= 0;
9269 g_b_init_get_sid_sub_authority_count
= 0;
9270 g_b_init_get_security_info
= 0;
9271 g_b_init_get_file_security_w
= 0;
9272 g_b_init_get_file_security_a
= 0;
9273 g_b_init_get_security_descriptor_owner
= 0;
9274 g_b_init_get_security_descriptor_group
= 0;
9275 g_b_init_is_valid_sid
= 0;
9276 g_b_init_create_toolhelp32_snapshot
= 0;
9277 g_b_init_process32_first
= 0;
9278 g_b_init_process32_next
= 0;
9279 g_b_init_open_thread_token
= 0;
9280 g_b_init_impersonate_self
= 0;
9281 g_b_init_revert_to_self
= 0;
9282 g_b_init_get_process_memory_info
= 0;
9283 g_b_init_get_process_working_set_size
= 0;
9284 g_b_init_global_memory_status
= 0;
9285 g_b_init_global_memory_status_ex
= 0;
9286 g_b_init_equal_sid
= 0;
9287 g_b_init_copy_sid
= 0;
9288 g_b_init_get_length_sid
= 0;
9289 g_b_init_get_native_system_info
= 0;
9290 g_b_init_get_system_times
= 0;
9291 g_b_init_create_symbolic_link_w
= 0;
9292 g_b_init_create_symbolic_link_a
= 0;
9293 g_b_init_get_security_descriptor_dacl
= 0;
9294 g_b_init_convert_sd_to_sddl
= 0;
9295 g_b_init_convert_sddl_to_sd
= 0;
9296 g_b_init_is_valid_security_descriptor
= 0;
9297 g_b_init_set_file_security_w
= 0;
9298 g_b_init_set_file_security_a
= 0;
9299 g_b_init_set_named_security_info_w
= 0;
9300 g_b_init_set_named_security_info_a
= 0;
9301 g_b_init_get_adapters_info
= 0;
9302 g_b_init_compare_string_w
= 0;
9303 num_of_processors
= 0;
9304 /* The following sets a handler for shutdown notifications for
9305 console apps. This actually applies to Emacs in both console and
9306 GUI modes, since we had to fool windows into thinking emacs is a
9307 console application to get console mode to work. */
9308 SetConsoleCtrlHandler (shutdown_handler
, TRUE
);
9310 /* "None" is the default group name on standalone workstations. */
9311 strcpy (dflt_group_name
, "None");
9313 /* Reset, in case it has some value inherited from dump time. */
9314 w32_stat_get_owner_group
= 0;
9316 /* If w32_unicode_filenames is non-zero, we will be using Unicode
9317 (a.k.a. "wide") APIs to invoke functions that accept file
9319 if (is_windows_9x ())
9320 w32_unicode_filenames
= 0;
9322 w32_unicode_filenames
= 1;
9325 /* For make-serial-process */
9327 serial_open (Lisp_Object port_obj
)
9329 char *port
= SSDATA (port_obj
);
9334 hnd
= CreateFile (port
, GENERIC_READ
| GENERIC_WRITE
, 0, 0,
9335 OPEN_EXISTING
, FILE_FLAG_OVERLAPPED
, 0);
9336 if (hnd
== INVALID_HANDLE_VALUE
)
9337 error ("Could not open %s", port
);
9338 fd
= (int) _open_osfhandle ((intptr_t) hnd
, 0);
9340 error ("Could not open %s", port
);
9344 error ("Could not create child process");
9346 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
9347 fd_info
[ fd
].hnd
= hnd
;
9348 fd_info
[ fd
].flags
|=
9349 FILE_READ
| FILE_WRITE
| FILE_BINARY
| FILE_SERIAL
;
9350 if (fd_info
[ fd
].cp
!= NULL
)
9352 error ("fd_info[fd = %d] is already in use", fd
);
9354 fd_info
[ fd
].cp
= cp
;
9355 cp
->ovl_read
.hEvent
= CreateEvent (NULL
, TRUE
, FALSE
, NULL
);
9356 if (cp
->ovl_read
.hEvent
== NULL
)
9357 error ("Could not create read event");
9358 cp
->ovl_write
.hEvent
= CreateEvent (NULL
, TRUE
, FALSE
, NULL
);
9359 if (cp
->ovl_write
.hEvent
== NULL
)
9360 error ("Could not create write event");
9365 /* For serial-process-configure */
9367 serial_configure (struct Lisp_Process
*p
, Lisp_Object contact
)
9369 Lisp_Object childp2
= Qnil
;
9370 Lisp_Object tem
= Qnil
;
9374 char summary
[4] = "???"; /* This usually becomes "8N1". */
9376 if ((fd_info
[ p
->outfd
].flags
& FILE_SERIAL
) == 0)
9377 error ("Not a serial process");
9378 hnd
= fd_info
[ p
->outfd
].hnd
;
9380 childp2
= Fcopy_sequence (p
->childp
);
9382 /* Initialize timeouts for blocking read and blocking write. */
9383 if (!GetCommTimeouts (hnd
, &ct
))
9384 error ("GetCommTimeouts() failed");
9385 ct
.ReadIntervalTimeout
= 0;
9386 ct
.ReadTotalTimeoutMultiplier
= 0;
9387 ct
.ReadTotalTimeoutConstant
= 0;
9388 ct
.WriteTotalTimeoutMultiplier
= 0;
9389 ct
.WriteTotalTimeoutConstant
= 0;
9390 if (!SetCommTimeouts (hnd
, &ct
))
9391 error ("SetCommTimeouts() failed");
9392 /* Read port attributes and prepare default configuration. */
9393 memset (&dcb
, 0, sizeof (dcb
));
9394 dcb
.DCBlength
= sizeof (DCB
);
9395 if (!GetCommState (hnd
, &dcb
))
9396 error ("GetCommState() failed");
9399 dcb
.fAbortOnError
= FALSE
;
9400 /* dcb.XonLim and dcb.XoffLim are set by GetCommState() */
9405 /* Configure speed. */
9406 if (!NILP (Fplist_member (contact
, QCspeed
)))
9407 tem
= Fplist_get (contact
, QCspeed
);
9409 tem
= Fplist_get (p
->childp
, QCspeed
);
9411 dcb
.BaudRate
= XINT (tem
);
9412 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
9414 /* Configure bytesize. */
9415 if (!NILP (Fplist_member (contact
, QCbytesize
)))
9416 tem
= Fplist_get (contact
, QCbytesize
);
9418 tem
= Fplist_get (p
->childp
, QCbytesize
);
9420 tem
= make_number (8);
9422 if (XINT (tem
) != 7 && XINT (tem
) != 8)
9423 error (":bytesize must be nil (8), 7, or 8");
9424 dcb
.ByteSize
= XINT (tem
);
9425 summary
[0] = XINT (tem
) + '0';
9426 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
9428 /* Configure parity. */
9429 if (!NILP (Fplist_member (contact
, QCparity
)))
9430 tem
= Fplist_get (contact
, QCparity
);
9432 tem
= Fplist_get (p
->childp
, QCparity
);
9433 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
9434 error (":parity must be nil (no parity), `even', or `odd'");
9435 dcb
.fParity
= FALSE
;
9436 dcb
.Parity
= NOPARITY
;
9437 dcb
.fErrorChar
= FALSE
;
9442 else if (EQ (tem
, Qeven
))
9446 dcb
.Parity
= EVENPARITY
;
9447 dcb
.fErrorChar
= TRUE
;
9449 else if (EQ (tem
, Qodd
))
9453 dcb
.Parity
= ODDPARITY
;
9454 dcb
.fErrorChar
= TRUE
;
9456 childp2
= Fplist_put (childp2
, QCparity
, tem
);
9458 /* Configure stopbits. */
9459 if (!NILP (Fplist_member (contact
, QCstopbits
)))
9460 tem
= Fplist_get (contact
, QCstopbits
);
9462 tem
= Fplist_get (p
->childp
, QCstopbits
);
9464 tem
= make_number (1);
9466 if (XINT (tem
) != 1 && XINT (tem
) != 2)
9467 error (":stopbits must be nil (1 stopbit), 1, or 2");
9468 summary
[2] = XINT (tem
) + '0';
9469 if (XINT (tem
) == 1)
9470 dcb
.StopBits
= ONESTOPBIT
;
9471 else if (XINT (tem
) == 2)
9472 dcb
.StopBits
= TWOSTOPBITS
;
9473 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
9475 /* Configure flowcontrol. */
9476 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
9477 tem
= Fplist_get (contact
, QCflowcontrol
);
9479 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
9480 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
9481 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
9482 dcb
.fOutxCtsFlow
= FALSE
;
9483 dcb
.fOutxDsrFlow
= FALSE
;
9484 dcb
.fDtrControl
= DTR_CONTROL_DISABLE
;
9485 dcb
.fDsrSensitivity
= FALSE
;
9486 dcb
.fTXContinueOnXoff
= FALSE
;
9489 dcb
.fRtsControl
= RTS_CONTROL_DISABLE
;
9490 dcb
.XonChar
= 17; /* Control-Q */
9491 dcb
.XoffChar
= 19; /* Control-S */
9494 /* Already configured. */
9496 else if (EQ (tem
, Qhw
))
9498 dcb
.fRtsControl
= RTS_CONTROL_HANDSHAKE
;
9499 dcb
.fOutxCtsFlow
= TRUE
;
9501 else if (EQ (tem
, Qsw
))
9506 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
9508 /* Activate configuration. */
9509 if (!SetCommState (hnd
, &dcb
))
9510 error ("SetCommState() failed");
9512 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
9513 pset_childp (p
, childp2
);
9516 /* For make-pipe-process */
9518 register_aux_fd (int infd
)
9524 error ("Could not create child process");
9526 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
9528 if (fd_info
[ infd
].cp
!= NULL
)
9530 error ("fd_info[fd = %d] is already in use", infd
);
9532 fd_info
[ infd
].cp
= cp
;
9533 fd_info
[ infd
].hnd
= (HANDLE
) _get_osfhandle (infd
);
9539 emacs_gnutls_pull (gnutls_transport_ptr_t p
, void* buf
, size_t sz
)
9542 struct Lisp_Process
*process
= (struct Lisp_Process
*)p
;
9543 int fd
= process
->infd
;
9545 n
= sys_read (fd
, (char*)buf
, sz
);
9552 /* Translate the WSAEWOULDBLOCK alias EWOULDBLOCK to EAGAIN. */
9553 if (err
== EWOULDBLOCK
)
9556 emacs_gnutls_transport_set_errno (process
->gnutls_state
, err
);
9562 emacs_gnutls_push (gnutls_transport_ptr_t p
, const void* buf
, size_t sz
)
9564 struct Lisp_Process
*process
= (struct Lisp_Process
*)p
;
9565 int fd
= process
->outfd
;
9566 ssize_t n
= sys_write (fd
, buf
, sz
);
9568 /* 0 or more bytes written means everything went fine. */
9572 /* Negative bytes written means we got an error in errno.
9573 Translate the WSAEWOULDBLOCK alias EWOULDBLOCK to EAGAIN. */
9574 emacs_gnutls_transport_set_errno (process
->gnutls_state
,
9575 errno
== EWOULDBLOCK
? EAGAIN
: errno
);
9579 #endif /* HAVE_GNUTLS */