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
)
3438 else if (w32_unicode_filenames
)
3440 if (!FindNextFileW (dir_find_handle
, &dir_find_data_w
))
3445 if (!FindNextFileA (dir_find_handle
, &dir_find_data_a
))
3449 /* Emacs never uses this value, so don't bother making it match
3450 value returned by stat(). */
3451 dir_static
.d_ino
= 1;
3453 if (w32_unicode_filenames
)
3455 if (downcase
|| dir_is_fat
)
3457 wchar_t tem
[MAX_PATH
];
3459 wcscpy (tem
, dir_find_data_w
.cFileName
);
3461 filename_from_utf16 (tem
, dir_static
.d_name
);
3464 filename_from_utf16 (dir_find_data_w
.cFileName
, dir_static
.d_name
);
3465 last_dir_find_data
= DIR_FIND_DATA_W
;
3471 /* If the file name in cFileName[] includes `?' characters, it
3472 means the original file name used characters that cannot be
3473 represented by the current ANSI codepage. To avoid total
3474 lossage, retrieve the short 8+3 alias of the long file
3476 if (_mbspbrk (dir_find_data_a
.cFileName
, "?"))
3478 strcpy (tem
, dir_find_data_a
.cAlternateFileName
);
3479 /* 8+3 aliases are returned in all caps, which could break
3480 various alists that look at filenames' extensions. */
3483 else if (downcase
|| dir_is_fat
)
3484 strcpy (tem
, dir_find_data_a
.cFileName
);
3486 filename_from_ansi (dir_find_data_a
.cFileName
, dir_static
.d_name
);
3487 if (downcase
|| dir_is_fat
)
3490 filename_from_ansi (tem
, dir_static
.d_name
);
3492 last_dir_find_data
= DIR_FIND_DATA_A
;
3495 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3496 dir_static
.d_reclen
= sizeof (struct dirent
) - MAX_UTF8_PATH
+ 3 +
3497 dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3503 open_unc_volume (const char *path
)
3505 const char *fn
= map_w32_filename (path
, NULL
);
3509 if (w32_unicode_filenames
)
3512 wchar_t fnw
[MAX_PATH
];
3514 nrw
.dwScope
= RESOURCE_GLOBALNET
;
3515 nrw
.dwType
= RESOURCETYPE_DISK
;
3516 nrw
.dwDisplayType
= RESOURCEDISPLAYTYPE_SERVER
;
3517 nrw
.dwUsage
= RESOURCEUSAGE_CONTAINER
;
3518 nrw
.lpLocalName
= NULL
;
3519 filename_to_utf16 (fn
, fnw
);
3520 nrw
.lpRemoteName
= fnw
;
3521 nrw
.lpComment
= NULL
;
3522 nrw
.lpProvider
= NULL
;
3524 result
= WNetOpenEnumW (RESOURCE_GLOBALNET
, RESOURCETYPE_DISK
,
3525 RESOURCEUSAGE_CONNECTABLE
, &nrw
, &henum
);
3532 nra
.dwScope
= RESOURCE_GLOBALNET
;
3533 nra
.dwType
= RESOURCETYPE_DISK
;
3534 nra
.dwDisplayType
= RESOURCEDISPLAYTYPE_SERVER
;
3535 nra
.dwUsage
= RESOURCEUSAGE_CONTAINER
;
3536 nra
.lpLocalName
= NULL
;
3537 filename_to_ansi (fn
, fna
);
3538 nra
.lpRemoteName
= fna
;
3539 nra
.lpComment
= NULL
;
3540 nra
.lpProvider
= NULL
;
3542 result
= WNetOpenEnumA (RESOURCE_GLOBALNET
, RESOURCETYPE_DISK
,
3543 RESOURCEUSAGE_CONNECTABLE
, &nra
, &henum
);
3545 if (result
== NO_ERROR
)
3548 return INVALID_HANDLE_VALUE
;
3552 read_unc_volume (HANDLE henum
, wchar_t *fname_w
, char *fname_a
, int size
)
3557 DWORD bufsize
= 512;
3561 if (w32_unicode_filenames
)
3566 buffer
= alloca (bufsize
);
3567 result
= WNetEnumResourceW (henum
, &count
, buffer
, &bufsize
);
3568 if (result
!= NO_ERROR
)
3570 /* WNetEnumResource returns \\resource\share...skip forward to "share". */
3571 ptrw
= ((LPNETRESOURCEW
) buffer
)->lpRemoteName
;
3573 while (*ptrw
&& *ptrw
!= L
'/' && *ptrw
!= L
'\\') ptrw
++;
3575 wcsncpy (fname_w
, ptrw
, size
);
3580 int dbcs_p
= max_filename_mbslen () > 1;
3583 buffer
= alloca (bufsize
);
3584 result
= WNetEnumResourceA (henum
, &count
, buffer
, &bufsize
);
3585 if (result
!= NO_ERROR
)
3587 ptra
= ((LPNETRESOURCEA
) buffer
)->lpRemoteName
;
3590 while (*ptra
&& !IS_DIRECTORY_SEP (*ptra
)) ptra
++;
3593 while (*ptra
&& !IS_DIRECTORY_SEP (*ptra
))
3594 ptra
= CharNextExA (file_name_codepage
, ptra
, 0);
3597 strncpy (fname_a
, ptra
, size
);
3605 close_unc_volume (HANDLE henum
)
3607 if (henum
!= INVALID_HANDLE_VALUE
)
3608 WNetCloseEnum (henum
);
3612 unc_volume_file_attributes (const char *path
)
3617 henum
= open_unc_volume (path
);
3618 if (henum
== INVALID_HANDLE_VALUE
)
3621 attrs
= FILE_ATTRIBUTE_READONLY
| FILE_ATTRIBUTE_DIRECTORY
;
3623 close_unc_volume (henum
);
3628 /* Ensure a network connection is authenticated. */
3630 logon_network_drive (const char *path
)
3632 char share
[MAX_UTF8_PATH
];
3639 if (IS_DIRECTORY_SEP (path
[0]) && IS_DIRECTORY_SEP (path
[1]))
3640 drvtype
= DRIVE_REMOTE
;
3641 else if (path
[0] == '\0' || path
[1] != ':')
3642 drvtype
= GetDriveType (NULL
);
3649 drvtype
= GetDriveType (drive
);
3652 /* Only logon to networked drives. */
3653 if (drvtype
!= DRIVE_REMOTE
)
3657 strncpy (share
, path
, MAX_UTF8_PATH
);
3658 /* Truncate to just server and share name. */
3659 for (p
= share
+ 2; *p
&& p
< share
+ MAX_UTF8_PATH
; p
++)
3661 if (IS_DIRECTORY_SEP (*p
) && ++n_slashes
> 3)
3668 if (w32_unicode_filenames
)
3670 NETRESOURCEW resourcew
;
3671 wchar_t share_w
[MAX_PATH
];
3673 resourcew
.dwScope
= RESOURCE_GLOBALNET
;
3674 resourcew
.dwType
= RESOURCETYPE_DISK
;
3675 resourcew
.dwDisplayType
= RESOURCEDISPLAYTYPE_SHARE
;
3676 resourcew
.dwUsage
= RESOURCEUSAGE_CONTAINER
;
3677 resourcew
.lpLocalName
= NULL
;
3678 filename_to_utf16 (share
, share_w
);
3679 resourcew
.lpRemoteName
= share_w
;
3680 resourcew
.lpProvider
= NULL
;
3682 val
= WNetAddConnection2W (&resourcew
, NULL
, NULL
, CONNECT_INTERACTIVE
);
3686 NETRESOURCEA resourcea
;
3687 char share_a
[MAX_PATH
];
3689 resourcea
.dwScope
= RESOURCE_GLOBALNET
;
3690 resourcea
.dwType
= RESOURCETYPE_DISK
;
3691 resourcea
.dwDisplayType
= RESOURCEDISPLAYTYPE_SHARE
;
3692 resourcea
.dwUsage
= RESOURCEUSAGE_CONTAINER
;
3693 resourcea
.lpLocalName
= NULL
;
3694 filename_to_ansi (share
, share_a
);
3695 resourcea
.lpRemoteName
= share_a
;
3696 resourcea
.lpProvider
= NULL
;
3698 val
= WNetAddConnection2A (&resourcea
, NULL
, NULL
, CONNECT_INTERACTIVE
);
3704 case ERROR_ALREADY_ASSIGNED
:
3706 case ERROR_ACCESS_DENIED
:
3707 case ERROR_LOGON_FAILURE
:
3713 case ERROR_BAD_NET_NAME
:
3714 case ERROR_NO_NET_OR_BAD_PATH
:
3715 case ERROR_NO_NETWORK
:
3716 case ERROR_CANCELLED
:
3723 /* Emulate faccessat(2). */
3725 faccessat (int dirfd
, const char * path
, int mode
, int flags
)
3729 if (dirfd
!= AT_FDCWD
3730 && !(IS_DIRECTORY_SEP (path
[0])
3731 || IS_DEVICE_SEP (path
[1])))
3737 /* MSVCRT implementation of 'access' doesn't recognize D_OK, and its
3738 newer versions blow up when passed D_OK. */
3739 path
= map_w32_filename (path
, NULL
);
3740 /* If the last element of PATH is a symlink, we need to resolve it
3741 to get the attributes of its target file. Note: any symlinks in
3742 PATH elements other than the last one are transparently resolved
3743 by GetFileAttributes below. */
3744 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) != 0
3745 && (flags
& AT_SYMLINK_NOFOLLOW
) == 0)
3746 path
= chase_symlinks (path
);
3748 if (w32_unicode_filenames
)
3750 wchar_t path_w
[MAX_PATH
];
3752 filename_to_utf16 (path
, path_w
);
3753 attributes
= GetFileAttributesW (path_w
);
3757 char path_a
[MAX_PATH
];
3759 filename_to_ansi (path
, path_a
);
3760 attributes
= GetFileAttributesA (path_a
);
3763 if (attributes
== -1)
3765 DWORD w32err
= GetLastError ();
3769 case ERROR_INVALID_NAME
:
3770 case ERROR_BAD_PATHNAME
:
3771 if (is_unc_volume (path
))
3773 attributes
= unc_volume_file_attributes (path
);
3774 if (attributes
== -1)
3782 case ERROR_FILE_NOT_FOUND
:
3783 case ERROR_BAD_NETPATH
:
3792 if ((mode
& X_OK
) != 0
3793 && !(is_exec (path
) || (attributes
& FILE_ATTRIBUTE_DIRECTORY
) != 0))
3798 if ((mode
& W_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_READONLY
) != 0)
3803 if ((mode
& D_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
) == 0)
3811 /* A version of 'access' to be used locally with file names in
3812 locale-specific encoding. Does not resolve symlinks and does not
3813 support file names on FAT12 and FAT16 volumes, but that's OK, since
3814 we only invoke this function for files inside the Emacs source or
3815 installation tree, on directories (so any symlinks should have the
3816 directory bit set), and on short file names such as "C:/.emacs". */
3818 sys_access (const char *fname
, int mode
)
3820 char fname_copy
[MAX_PATH
], *p
;
3823 strcpy (fname_copy
, fname
);
3824 /* Do the equivalent of unixtodos_filename. */
3825 for (p
= fname_copy
; *p
; p
= CharNext (p
))
3829 if ((attributes
= GetFileAttributesA (fname_copy
)) == -1)
3831 DWORD w32err
= GetLastError ();
3835 case ERROR_INVALID_NAME
:
3836 case ERROR_BAD_PATHNAME
:
3837 case ERROR_FILE_NOT_FOUND
:
3838 case ERROR_BAD_NETPATH
:
3847 if ((mode
& X_OK
) != 0
3848 && !(is_exec (fname_copy
)
3849 || (attributes
& FILE_ATTRIBUTE_DIRECTORY
) != 0))
3854 if ((mode
& W_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_READONLY
) != 0)
3859 if ((mode
& D_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
) == 0)
3867 /* Shadow some MSVC runtime functions to map requests for long filenames
3868 to reasonable short names if necessary. This was originally added to
3869 permit running Emacs on NT 3.1 on a FAT partition, which doesn't support
3873 sys_chdir (const char * path
)
3875 path
= map_w32_filename (path
, NULL
);
3876 if (w32_unicode_filenames
)
3878 wchar_t newdir_w
[MAX_PATH
];
3880 if (filename_to_utf16 (path
, newdir_w
) == 0)
3881 return _wchdir (newdir_w
);
3886 char newdir_a
[MAX_PATH
];
3888 if (filename_to_ansi (path
, newdir_a
) == 0)
3889 return _chdir (newdir_a
);
3895 sys_chmod (const char * path
, int mode
)
3897 path
= chase_symlinks (map_w32_filename (path
, NULL
));
3898 if (w32_unicode_filenames
)
3900 wchar_t path_w
[MAX_PATH
];
3902 filename_to_utf16 (path
, path_w
);
3903 return _wchmod (path_w
, mode
);
3907 char path_a
[MAX_PATH
];
3909 filename_to_ansi (path
, path_a
);
3910 return _chmod (path_a
, mode
);
3915 sys_creat (const char * path
, int mode
)
3917 path
= map_w32_filename (path
, NULL
);
3918 if (w32_unicode_filenames
)
3920 wchar_t path_w
[MAX_PATH
];
3922 filename_to_utf16 (path
, path_w
);
3923 return _wcreat (path_w
, mode
);
3927 char path_a
[MAX_PATH
];
3929 filename_to_ansi (path
, path_a
);
3930 return _creat (path_a
, mode
);
3935 sys_fopen (const char * path
, const char * mode
)
3939 const char * mode_save
= mode
;
3941 /* Force all file handles to be non-inheritable. This is necessary to
3942 ensure child processes don't unwittingly inherit handles that might
3943 prevent future file access. */
3947 else if (mode
[0] == 'w' || mode
[0] == 'a')
3948 oflag
= O_WRONLY
| O_CREAT
| O_TRUNC
;
3952 /* Only do simplistic option parsing. */
3956 oflag
&= ~(O_RDONLY
| O_WRONLY
);
3959 else if (mode
[0] == 'b')
3964 else if (mode
[0] == 't')
3971 path
= map_w32_filename (path
, NULL
);
3972 if (w32_unicode_filenames
)
3974 wchar_t path_w
[MAX_PATH
];
3976 filename_to_utf16 (path
, path_w
);
3977 fd
= _wopen (path_w
, oflag
| _O_NOINHERIT
, 0644);
3981 char path_a
[MAX_PATH
];
3983 filename_to_ansi (path
, path_a
);
3984 fd
= _open (path_a
, oflag
| _O_NOINHERIT
, 0644);
3989 return _fdopen (fd
, mode_save
);
3992 /* This only works on NTFS volumes, but is useful to have. */
3994 sys_link (const char * old
, const char * new)
3998 char oldname
[MAX_UTF8_PATH
], newname
[MAX_UTF8_PATH
];
3999 wchar_t oldname_w
[MAX_PATH
];
4000 char oldname_a
[MAX_PATH
];
4002 if (old
== NULL
|| new == NULL
)
4008 strcpy (oldname
, map_w32_filename (old
, NULL
));
4009 strcpy (newname
, map_w32_filename (new, NULL
));
4011 if (w32_unicode_filenames
)
4013 filename_to_utf16 (oldname
, oldname_w
);
4014 fileh
= CreateFileW (oldname_w
, 0, 0, NULL
, OPEN_EXISTING
,
4015 FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
4019 filename_to_ansi (oldname
, oldname_a
);
4020 fileh
= CreateFileA (oldname_a
, 0, 0, NULL
, OPEN_EXISTING
,
4021 FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
4023 if (fileh
!= INVALID_HANDLE_VALUE
)
4027 /* Confusingly, the "alternate" stream name field does not apply
4028 when restoring a hard link, and instead contains the actual
4029 stream data for the link (ie. the name of the link to create).
4030 The WIN32_STREAM_ID structure before the cStreamName field is
4031 the stream header, which is then immediately followed by the
4035 WIN32_STREAM_ID wid
;
4036 WCHAR wbuffer
[MAX_PATH
]; /* extra space for link name */
4039 /* We used to pass MB_PRECOMPOSED as the 2nd arg here, but MSDN
4040 indicates that flag is unsupported for CP_UTF8, and OTOH says
4041 it is the default anyway. */
4042 wlen
= pMultiByteToWideChar (CP_UTF8
, 0, newname
, -1,
4043 data
.wid
.cStreamName
, MAX_PATH
);
4046 LPVOID context
= NULL
;
4049 data
.wid
.dwStreamId
= BACKUP_LINK
;
4050 data
.wid
.dwStreamAttributes
= 0;
4051 data
.wid
.Size
.LowPart
= wlen
* sizeof (WCHAR
);
4052 data
.wid
.Size
.HighPart
= 0;
4053 data
.wid
.dwStreamNameSize
= 0;
4055 if (BackupWrite (fileh
, (LPBYTE
)&data
,
4056 offsetof (WIN32_STREAM_ID
, cStreamName
)
4057 + data
.wid
.Size
.LowPart
,
4058 &wbytes
, FALSE
, FALSE
, &context
)
4059 && BackupWrite (fileh
, NULL
, 0, &wbytes
, TRUE
, FALSE
, &context
))
4066 DWORD err
= GetLastError ();
4071 case ERROR_ACCESS_DENIED
:
4072 /* This is what happens when OLDNAME is a directory,
4073 since Windows doesn't support hard links to
4074 directories. Posix says to set errno to EPERM in
4076 if (w32_unicode_filenames
)
4077 attributes
= GetFileAttributesW (oldname_w
);
4079 attributes
= GetFileAttributesA (oldname_a
);
4080 if (attributes
!= -1
4081 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
) != 0)
4083 else if (attributes
== -1
4084 && is_unc_volume (oldname
)
4085 && unc_volume_file_attributes (oldname
) != -1)
4090 case ERROR_TOO_MANY_LINKS
:
4093 case ERROR_NOT_SAME_DEVICE
:
4103 CloseHandle (fileh
);
4112 sys_mkdir (const char * path
)
4114 path
= map_w32_filename (path
, NULL
);
4116 if (w32_unicode_filenames
)
4118 wchar_t path_w
[MAX_PATH
];
4120 filename_to_utf16 (path
, path_w
);
4121 return _wmkdir (path_w
);
4125 char path_a
[MAX_PATH
];
4127 filename_to_ansi (path
, path_a
);
4128 return _mkdir (path_a
);
4133 sys_open (const char * path
, int oflag
, int mode
)
4135 const char* mpath
= map_w32_filename (path
, NULL
);
4138 if (w32_unicode_filenames
)
4140 wchar_t mpath_w
[MAX_PATH
];
4142 filename_to_utf16 (mpath
, mpath_w
);
4143 /* If possible, try to open file without _O_CREAT, to be able to
4144 write to existing hidden and system files. Force all file
4145 handles to be non-inheritable. */
4146 if ((oflag
& (_O_CREAT
| _O_EXCL
)) != (_O_CREAT
| _O_EXCL
))
4147 res
= _wopen (mpath_w
, (oflag
& ~_O_CREAT
) | _O_NOINHERIT
, mode
);
4149 res
= _wopen (mpath_w
, oflag
| _O_NOINHERIT
, mode
);
4153 char mpath_a
[MAX_PATH
];
4155 filename_to_ansi (mpath
, mpath_a
);
4156 if ((oflag
& (_O_CREAT
| _O_EXCL
)) != (_O_CREAT
| _O_EXCL
))
4157 res
= _open (mpath_a
, (oflag
& ~_O_CREAT
) | _O_NOINHERIT
, mode
);
4159 res
= _open (mpath_a
, oflag
| _O_NOINHERIT
, mode
);
4165 /* Implementation of mkostemp for MS-Windows, to avoid race conditions
4168 Standard algorithm for generating a temporary file name seems to be
4169 use pid or tid with a letter on the front (in place of the 6 X's)
4170 and cycle through the letters to find a unique name. We extend
4171 that to allow any reasonable character as the first of the 6 X's,
4172 so that the number of simultaneously used temporary files will be
4176 mkostemp (char * template, int flags
)
4180 unsigned uid
= GetCurrentThreadId ();
4181 int save_errno
= errno
;
4182 static char first_char
[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#";
4185 if (template == NULL
)
4188 p
= template + strlen (template);
4190 /* replace up to the last 5 X's with uid in decimal */
4191 while (--p
>= template && p
[0] == 'X' && --i
>= 0)
4193 p
[0] = '0' + uid
% 10;
4197 if (i
< 0 && p
[0] == 'X')
4202 p
[0] = first_char
[i
];
4203 if ((fd
= sys_open (template,
4204 flags
| _O_CREAT
| _O_EXCL
| _O_RDWR
,
4205 S_IRUSR
| S_IWUSR
)) >= 0
4213 while (++i
< sizeof (first_char
));
4216 /* Template is badly formed or else we can't generate a unique name. */
4221 fchmod (int fd
, mode_t mode
)
4227 sys_rename_replace (const char *oldname
, const char *newname
, BOOL force
)
4230 char temp
[MAX_UTF8_PATH
], temp_a
[MAX_PATH
];;
4233 bool have_temp_a
= false;
4235 /* MoveFile on Windows 95 doesn't correctly change the short file name
4236 alias in a number of circumstances (it is not easy to predict when
4237 just by looking at oldname and newname, unfortunately). In these
4238 cases, renaming through a temporary name avoids the problem.
4240 A second problem on Windows 95 is that renaming through a temp name when
4241 newname is uppercase fails (the final long name ends up in
4242 lowercase, although the short alias might be uppercase) UNLESS the
4243 long temp name is not 8.3.
4245 So, on Windows 95 we always rename through a temp name, and we make sure
4246 the temp name has a long extension to ensure correct renaming. */
4248 strcpy (temp
, map_w32_filename (oldname
, NULL
));
4250 /* volume_info is set indirectly by map_w32_filename. */
4251 oldname_dev
= volume_info
.serialnum
;
4253 if (os_subtype
== OS_9X
)
4258 char oldname_a
[MAX_PATH
];
4260 oldname
= map_w32_filename (oldname
, NULL
);
4261 filename_to_ansi (oldname
, oldname_a
);
4262 filename_to_ansi (temp
, temp_a
);
4263 if ((o
= strrchr (oldname_a
, '\\')))
4266 o
= (char *) oldname_a
;
4268 if ((p
= strrchr (temp_a
, '\\')))
4275 /* Force temp name to require a manufactured 8.3 alias - this
4276 seems to make the second rename work properly. */
4277 sprintf (p
, "_.%s.%u", o
, i
);
4279 result
= rename (oldname_a
, temp_a
);
4281 /* This loop must surely terminate! */
4282 while (result
< 0 && errno
== EEXIST
);
4288 /* If FORCE, emulate Unix behavior - newname is deleted if it already exists
4289 (at least if it is a file; don't do this for directories).
4291 Since we mustn't do this if we are just changing the case of the
4292 file name (we would end up deleting the file we are trying to
4293 rename!), we let rename detect if the destination file already
4294 exists - that way we avoid the possible pitfalls of trying to
4295 determine ourselves whether two names really refer to the same
4296 file, which is not always possible in the general case. (Consider
4297 all the permutations of shared or subst'd drives, etc.) */
4299 newname
= map_w32_filename (newname
, NULL
);
4301 /* volume_info is set indirectly by map_w32_filename. */
4302 newname_dev
= volume_info
.serialnum
;
4304 if (w32_unicode_filenames
)
4306 wchar_t temp_w
[MAX_PATH
], newname_w
[MAX_PATH
];
4308 filename_to_utf16 (temp
, temp_w
);
4309 filename_to_utf16 (newname
, newname_w
);
4310 result
= _wrename (temp_w
, newname_w
);
4311 if (result
< 0 && force
)
4313 DWORD w32err
= GetLastError ();
4316 && newname_dev
!= oldname_dev
)
4318 /* The implementation of `rename' on Windows does not return
4319 errno = EXDEV when you are moving a directory to a
4320 different storage device (ex. logical disk). It returns
4321 EACCES instead. So here we handle such situations and
4325 if ((attributes
= GetFileAttributesW (temp_w
)) != -1
4326 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
))
4329 else if (errno
== EEXIST
)
4331 if (_wchmod (newname_w
, 0666) != 0)
4333 if (_wunlink (newname_w
) != 0)
4335 result
= _wrename (temp_w
, newname_w
);
4337 else if (w32err
== ERROR_PRIVILEGE_NOT_HELD
4338 && is_symlink (temp
))
4340 /* This is Windows prohibiting the user from creating a
4341 symlink in another place, since that requires
4349 char newname_a
[MAX_PATH
];
4352 filename_to_ansi (temp
, temp_a
);
4353 filename_to_ansi (newname
, newname_a
);
4354 result
= rename (temp_a
, newname_a
);
4355 if (result
< 0 && force
)
4357 DWORD w32err
= GetLastError ();
4360 && newname_dev
!= oldname_dev
)
4364 if ((attributes
= GetFileAttributesA (temp_a
)) != -1
4365 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
))
4368 else if (errno
== EEXIST
)
4370 if (_chmod (newname_a
, 0666) != 0)
4372 if (_unlink (newname_a
) != 0)
4374 result
= rename (temp_a
, newname_a
);
4376 else if (w32err
== ERROR_PRIVILEGE_NOT_HELD
4377 && is_symlink (temp
))
4386 sys_rename (char const *old
, char const *new)
4388 return sys_rename_replace (old
, new, TRUE
);
4392 sys_rmdir (const char * path
)
4394 path
= map_w32_filename (path
, NULL
);
4396 if (w32_unicode_filenames
)
4398 wchar_t path_w
[MAX_PATH
];
4400 filename_to_utf16 (path
, path_w
);
4401 return _wrmdir (path_w
);
4405 char path_a
[MAX_PATH
];
4407 filename_to_ansi (path
, path_a
);
4408 return _rmdir (path_a
);
4413 sys_unlink (const char * path
)
4415 path
= map_w32_filename (path
, NULL
);
4417 if (w32_unicode_filenames
)
4419 wchar_t path_w
[MAX_PATH
];
4421 filename_to_utf16 (path
, path_w
);
4422 /* On Unix, unlink works without write permission. */
4423 _wchmod (path_w
, 0666);
4424 return _wunlink (path_w
);
4428 char path_a
[MAX_PATH
];
4430 filename_to_ansi (path
, path_a
);
4431 _chmod (path_a
, 0666);
4432 return _unlink (path_a
);
4436 static FILETIME utc_base_ft
;
4437 static ULONGLONG utc_base
; /* In 100ns units */
4438 static int init
= 0;
4440 #define FILETIME_TO_U64(result, ft) \
4442 ULARGE_INTEGER uiTemp; \
4443 uiTemp.LowPart = (ft).dwLowDateTime; \
4444 uiTemp.HighPart = (ft).dwHighDateTime; \
4445 result = uiTemp.QuadPart; \
4449 initialize_utc_base (void)
4451 /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */
4460 st
.wMilliseconds
= 0;
4462 SystemTimeToFileTime (&st
, &utc_base_ft
);
4463 FILETIME_TO_U64 (utc_base
, utc_base_ft
);
4467 convert_time (FILETIME ft
)
4473 initialize_utc_base ();
4477 if (CompareFileTime (&ft
, &utc_base_ft
) < 0)
4480 FILETIME_TO_U64 (tmp
, ft
);
4481 return (time_t) ((tmp
- utc_base
) / 10000000L);
4485 convert_from_time_t (time_t time
, FILETIME
* pft
)
4491 initialize_utc_base ();
4495 /* time in 100ns units since 1-Jan-1601 */
4496 tmp
.QuadPart
= (ULONGLONG
) time
* 10000000L + utc_base
;
4497 pft
->dwHighDateTime
= tmp
.HighPart
;
4498 pft
->dwLowDateTime
= tmp
.LowPart
;
4501 static PSECURITY_DESCRIPTOR
4502 get_file_security_desc_by_handle (HANDLE h
)
4504 PSECURITY_DESCRIPTOR psd
= NULL
;
4506 SECURITY_INFORMATION si
= OWNER_SECURITY_INFORMATION
4507 | GROUP_SECURITY_INFORMATION
/* | DACL_SECURITY_INFORMATION */ ;
4509 err
= get_security_info (h
, SE_FILE_OBJECT
, si
,
4510 NULL
, NULL
, NULL
, NULL
, &psd
);
4511 if (err
!= ERROR_SUCCESS
)
4517 static PSECURITY_DESCRIPTOR
4518 get_file_security_desc_by_name (const char *fname
)
4520 PSECURITY_DESCRIPTOR psd
= NULL
;
4522 SECURITY_INFORMATION si
= OWNER_SECURITY_INFORMATION
4523 | GROUP_SECURITY_INFORMATION
/* | DACL_SECURITY_INFORMATION */ ;
4525 if (!get_file_security (fname
, si
, psd
, 0, &sd_len
))
4527 err
= GetLastError ();
4528 if (err
!= ERROR_INSUFFICIENT_BUFFER
)
4532 psd
= xmalloc (sd_len
);
4533 if (!get_file_security (fname
, si
, psd
, sd_len
, &sd_len
))
4545 unsigned n_subauthorities
;
4547 /* Use the last sub-authority value of the RID, the relative
4548 portion of the SID, as user/group ID. */
4549 n_subauthorities
= *get_sid_sub_authority_count (sid
);
4550 if (n_subauthorities
< 1)
4551 return 0; /* the "World" RID */
4552 return *get_sid_sub_authority (sid
, n_subauthorities
- 1);
4555 /* Caching SID and account values for faster lokup. */
4559 struct w32_id
*next
;
4561 unsigned char sid
[FLEXIBLE_ARRAY_MEMBER
];
4564 static struct w32_id
*w32_idlist
;
4567 w32_cached_id (PSID sid
, unsigned *id
, char *name
)
4569 struct w32_id
*tail
, *found
;
4571 for (found
= NULL
, tail
= w32_idlist
; tail
; tail
= tail
->next
)
4573 if (equal_sid ((PSID
)tail
->sid
, sid
))
4582 strcpy (name
, found
->name
);
4590 w32_add_to_cache (PSID sid
, unsigned id
, char *name
)
4593 struct w32_id
*new_entry
;
4595 /* We don't want to leave behind stale cache from when Emacs was
4599 sid_len
= get_length_sid (sid
);
4600 new_entry
= xmalloc (offsetof (struct w32_id
, sid
) + sid_len
);
4603 new_entry
->rid
= id
;
4604 strcpy (new_entry
->name
, name
);
4605 copy_sid (sid_len
, (PSID
)new_entry
->sid
, sid
);
4606 new_entry
->next
= w32_idlist
;
4607 w32_idlist
= new_entry
;
4616 get_name_and_id (PSECURITY_DESCRIPTOR psd
, unsigned *id
, char *nm
, int what
)
4620 SID_NAME_USE ignore
;
4622 DWORD name_len
= sizeof (name
);
4624 DWORD domain_len
= sizeof (domain
);
4629 result
= get_security_descriptor_owner (psd
, &sid
, &dflt
);
4630 else if (what
== GID
)
4631 result
= get_security_descriptor_group (psd
, &sid
, &dflt
);
4635 if (!result
|| !is_valid_sid (sid
))
4637 else if (!w32_cached_id (sid
, id
, nm
))
4639 if (!lookup_account_sid (NULL
, sid
, name
, &name_len
,
4640 domain
, &domain_len
, &ignore
)
4641 || name_len
> UNLEN
+1)
4645 *id
= get_rid (sid
);
4647 w32_add_to_cache (sid
, *id
, name
);
4654 get_file_owner_and_group (PSECURITY_DESCRIPTOR psd
, struct stat
*st
)
4656 int dflt_usr
= 0, dflt_grp
= 0;
4665 if (get_name_and_id (psd
, &st
->st_uid
, st
->st_uname
, UID
))
4667 if (get_name_and_id (psd
, &st
->st_gid
, st
->st_gname
, GID
))
4670 /* Consider files to belong to current user/group, if we cannot get
4671 more accurate information. */
4674 st
->st_uid
= dflt_passwd
.pw_uid
;
4675 strcpy (st
->st_uname
, dflt_passwd
.pw_name
);
4679 st
->st_gid
= dflt_passwd
.pw_gid
;
4680 strcpy (st
->st_gname
, dflt_group
.gr_name
);
4684 /* Return non-zero if NAME is a potentially slow filesystem. */
4686 is_slow_fs (const char *name
)
4691 if (IS_DIRECTORY_SEP (name
[0]) && IS_DIRECTORY_SEP (name
[1]))
4692 devtype
= DRIVE_REMOTE
; /* assume UNC name is remote */
4693 else if (!(strlen (name
) >= 2 && IS_DEVICE_SEP (name
[1])))
4694 devtype
= GetDriveType (NULL
); /* use root of current drive */
4697 /* GetDriveType needs the root directory of the drive. */
4698 strncpy (drive_root
, name
, 2);
4699 drive_root
[2] = '\\';
4700 drive_root
[3] = '\0';
4701 devtype
= GetDriveType (drive_root
);
4703 return !(devtype
== DRIVE_FIXED
|| devtype
== DRIVE_RAMDISK
);
4706 /* If this is non-zero, the caller wants accurate information about
4707 file's owner and group, which could be expensive to get. dired.c
4708 uses this flag when needed for the job at hand. */
4709 int w32_stat_get_owner_group
;
4711 /* MSVC stat function can't cope with UNC names and has other bugs, so
4712 replace it with our own. This also allows us to calculate consistent
4713 inode values and owner/group without hacks in the main Emacs code,
4714 and support file names encoded in UTF-8. */
4717 stat_worker (const char * path
, struct stat
* buf
, int follow_symlinks
)
4719 char *name
, *save_name
, *r
;
4720 WIN32_FIND_DATAW wfd_w
;
4721 WIN32_FIND_DATAA wfd_a
;
4723 unsigned __int64 fake_inode
= 0;
4726 int rootdir
= FALSE
;
4727 PSECURITY_DESCRIPTOR psd
= NULL
;
4728 int is_a_symlink
= 0;
4729 DWORD file_flags
= FILE_FLAG_BACKUP_SEMANTICS
;
4730 DWORD access_rights
= 0;
4731 DWORD fattrs
= 0, serialnum
= 0, fs_high
= 0, fs_low
= 0, nlinks
= 1;
4732 FILETIME ctime
, atime
, wtime
;
4733 wchar_t name_w
[MAX_PATH
];
4734 char name_a
[MAX_PATH
];
4736 if (path
== NULL
|| buf
== NULL
)
4742 save_name
= name
= (char *) map_w32_filename (path
, &path
);
4743 /* Must be valid filename, no wild cards or other invalid
4745 if (strpbrk (name
, "*?|<>\""))
4751 len
= strlen (name
);
4752 /* Allocate 1 extra byte so that we could append a slash to a root
4753 directory, down below. */
4754 name
= strcpy (alloca (len
+ 2), name
);
4756 /* Avoid a somewhat costly call to is_symlink if the filesystem
4757 doesn't support symlinks. */
4758 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) != 0)
4759 is_a_symlink
= is_symlink (name
);
4761 /* Plan A: Open the file and get all the necessary information via
4762 the resulting handle. This solves several issues in one blow:
4764 . retrieves attributes for the target of a symlink, if needed
4765 . gets attributes of root directories and symlinks pointing to
4766 root directories, thus avoiding the need for special-casing
4767 these and detecting them by examining the file-name format
4768 . retrieves more accurate attributes (e.g., non-zero size for
4769 some directories, esp. directories that are junction points)
4770 . correctly resolves "c:/..", "/.." and similar file names
4771 . avoids run-time penalties for 99% of use cases
4773 Plan A is always tried first, unless the user asked not to (but
4774 if the file is a symlink and we need to follow links, we try Plan
4775 A even if the user asked not to).
4777 If Plan A fails, we go to Plan B (below), where various
4778 potentially expensive techniques must be used to handle "special"
4779 files such as UNC volumes etc. */
4780 if (!(NILP (Vw32_get_true_file_attributes
)
4781 || (EQ (Vw32_get_true_file_attributes
, Qlocal
) && is_slow_fs (name
)))
4782 /* Following symlinks requires getting the info by handle. */
4783 || (is_a_symlink
&& follow_symlinks
))
4785 BY_HANDLE_FILE_INFORMATION info
;
4787 if (is_a_symlink
&& !follow_symlinks
)
4788 file_flags
|= FILE_FLAG_OPEN_REPARSE_POINT
;
4789 /* READ_CONTROL access rights are required to get security info
4790 by handle. But if the OS doesn't support security in the
4791 first place, we don't need to try. */
4792 if (is_windows_9x () != TRUE
)
4793 access_rights
|= READ_CONTROL
;
4795 if (w32_unicode_filenames
)
4797 filename_to_utf16 (name
, name_w
);
4798 fh
= CreateFileW (name_w
, access_rights
, 0, NULL
, OPEN_EXISTING
,
4800 /* If CreateFile fails with READ_CONTROL, try again with
4801 zero as access rights. */
4802 if (fh
== INVALID_HANDLE_VALUE
&& access_rights
)
4803 fh
= CreateFileW (name_w
, 0, 0, NULL
, OPEN_EXISTING
,
4808 filename_to_ansi (name
, name_a
);
4809 fh
= CreateFileA (name_a
, access_rights
, 0, NULL
, OPEN_EXISTING
,
4811 if (fh
== INVALID_HANDLE_VALUE
&& access_rights
)
4812 fh
= CreateFileA (name_a
, 0, 0, NULL
, OPEN_EXISTING
,
4815 if (fh
== INVALID_HANDLE_VALUE
)
4816 goto no_true_file_attributes
;
4818 /* This is more accurate in terms of getting the correct number
4819 of links, but is quite slow (it is noticeable when Emacs is
4820 making a list of file name completions). */
4821 if (GetFileInformationByHandle (fh
, &info
))
4823 nlinks
= info
.nNumberOfLinks
;
4824 /* Might as well use file index to fake inode values, but this
4825 is not guaranteed to be unique unless we keep a handle open
4826 all the time (even then there are situations where it is
4827 not unique). Reputedly, there are at most 48 bits of info
4828 (on NTFS, presumably less on FAT). */
4829 fake_inode
= info
.nFileIndexHigh
;
4831 fake_inode
+= info
.nFileIndexLow
;
4832 serialnum
= info
.dwVolumeSerialNumber
;
4833 fs_high
= info
.nFileSizeHigh
;
4834 fs_low
= info
.nFileSizeLow
;
4835 ctime
= info
.ftCreationTime
;
4836 atime
= info
.ftLastAccessTime
;
4837 wtime
= info
.ftLastWriteTime
;
4838 fattrs
= info
.dwFileAttributes
;
4842 /* We don't go to Plan B here, because it's not clear that
4843 it's a good idea. The only known use case where
4844 CreateFile succeeds, but GetFileInformationByHandle fails
4845 (with ERROR_INVALID_FUNCTION) is for character devices
4846 such as NUL, PRN, etc. For these, switching to Plan B is
4847 a net loss, because we lose the character device
4848 attribute returned by GetFileType below (FindFirstFile
4849 doesn't set that bit in the attributes), and the other
4850 fields don't make sense for character devices anyway.
4851 Emacs doesn't really care for non-file entities in the
4852 context of l?stat, so neither do we. */
4854 /* w32err is assigned so one could put a breakpoint here and
4855 examine its value, when GetFileInformationByHandle
4857 DWORD w32err
= GetLastError ();
4861 case ERROR_FILE_NOT_FOUND
: /* can this ever happen? */
4867 /* Test for a symlink before testing for a directory, since
4868 symlinks to directories have the directory bit set, but we
4869 don't want them to appear as directories. */
4870 if (is_a_symlink
&& !follow_symlinks
)
4871 buf
->st_mode
= S_IFLNK
;
4872 else if (fattrs
& FILE_ATTRIBUTE_DIRECTORY
)
4873 buf
->st_mode
= S_IFDIR
;
4876 DWORD ftype
= GetFileType (fh
);
4880 case FILE_TYPE_DISK
:
4881 buf
->st_mode
= S_IFREG
;
4883 case FILE_TYPE_PIPE
:
4884 buf
->st_mode
= S_IFIFO
;
4886 case FILE_TYPE_CHAR
:
4887 case FILE_TYPE_UNKNOWN
:
4889 buf
->st_mode
= S_IFCHR
;
4892 /* We produce the fallback owner and group data, based on the
4893 current user that runs Emacs, in the following cases:
4895 . caller didn't request owner and group info
4896 . this is Windows 9X
4897 . getting security by handle failed, and we need to produce
4898 information for the target of a symlink (this is better
4899 than producing a potentially misleading info about the
4902 If getting security by handle fails, and we don't need to
4903 resolve symlinks, we try getting security by name. */
4904 if (!w32_stat_get_owner_group
|| is_windows_9x () == TRUE
)
4905 get_file_owner_and_group (NULL
, buf
);
4908 psd
= get_file_security_desc_by_handle (fh
);
4911 get_file_owner_and_group (psd
, buf
);
4914 else if (!(is_a_symlink
&& follow_symlinks
))
4916 psd
= get_file_security_desc_by_name (name
);
4917 get_file_owner_and_group (psd
, buf
);
4921 get_file_owner_and_group (NULL
, buf
);
4927 no_true_file_attributes
:
4928 /* Plan B: Either getting a handle on the file failed, or the
4929 caller explicitly asked us to not bother making this
4930 information more accurate.
4932 Implementation note: In Plan B, we never bother to resolve
4933 symlinks, even if we got here because we tried Plan A and
4934 failed. That's because, even if the caller asked for extra
4935 precision by setting Vw32_get_true_file_attributes to t,
4936 resolving symlinks requires acquiring a file handle to the
4937 symlink, which we already know will fail. And if the user
4938 did not ask for extra precision, resolving symlinks will fly
4939 in the face of that request, since the user then wants the
4940 lightweight version of the code. */
4941 rootdir
= (path
>= save_name
+ len
- 1
4942 && (IS_DIRECTORY_SEP (*path
) || *path
== 0));
4944 /* If name is "c:/.." or "/.." then stat "c:/" or "/". */
4945 r
= IS_DEVICE_SEP (name
[1]) ? &name
[2] : name
;
4946 if (IS_DIRECTORY_SEP (r
[0])
4947 && r
[1] == '.' && r
[2] == '.' && r
[3] == '\0')
4950 /* Note: If NAME is a symlink to the root of a UNC volume
4951 (i.e. "\\SERVER"), we will not detect that here, and we will
4952 return data about the symlink as result of FindFirst below.
4953 This is unfortunate, but that marginal use case does not
4954 justify a call to chase_symlinks which would impose a penalty
4955 on all the other use cases. (We get here for symlinks to
4956 roots of UNC volumes because CreateFile above fails for them,
4957 unlike with symlinks to root directories X:\ of drives.) */
4958 if (is_unc_volume (name
))
4960 fattrs
= unc_volume_file_attributes (name
);
4964 ctime
= atime
= wtime
= utc_base_ft
;
4968 /* Make sure root directories end in a slash. */
4969 if (!IS_DIRECTORY_SEP (name
[len
-1]))
4970 strcpy (name
+ len
, "\\");
4971 if (GetDriveType (name
) < 2)
4977 fattrs
= FILE_ATTRIBUTE_DIRECTORY
;
4978 ctime
= atime
= wtime
= utc_base_ft
;
4984 /* Make sure non-root directories do NOT end in a slash,
4985 otherwise FindFirstFile might fail. */
4986 if (IS_DIRECTORY_SEP (name
[len
-1]))
4989 /* (This is hacky, but helps when doing file completions on
4990 network drives.) Optimize by using information available from
4991 active readdir if possible. */
4992 len
= strlen (dir_pathname
);
4993 if (IS_DIRECTORY_SEP (dir_pathname
[len
-1]))
4995 if (dir_find_handle
!= INVALID_HANDLE_VALUE
4996 && last_dir_find_data
!= -1
4997 && !(is_a_symlink
&& follow_symlinks
)
4998 /* The 2 file-name comparisons below support only ASCII
4999 characters, and will lose (compare not equal) when
5000 the file names include non-ASCII characters that are
5001 the same but for the case. However, doing this
5002 properly involves: (a) converting both file names to
5003 UTF-16, (b) lower-casing both names using CharLowerW,
5004 and (c) comparing the results; this would be quite a
5005 bit slower, whereas Plan B is for users who want
5006 lightweight albeit inaccurate version of 'stat'. */
5007 && c_strncasecmp (save_name
, dir_pathname
, len
) == 0
5008 && IS_DIRECTORY_SEP (name
[len
])
5009 && xstrcasecmp (name
+ len
+ 1, dir_static
.d_name
) == 0)
5011 have_wfd
= last_dir_find_data
;
5012 /* This was the last entry returned by readdir. */
5013 if (last_dir_find_data
== DIR_FIND_DATA_W
)
5014 wfd_w
= dir_find_data_w
;
5016 wfd_a
= dir_find_data_a
;
5020 logon_network_drive (name
);
5022 if (w32_unicode_filenames
)
5024 filename_to_utf16 (name
, name_w
);
5025 fh
= FindFirstFileW (name_w
, &wfd_w
);
5026 have_wfd
= DIR_FIND_DATA_W
;
5030 filename_to_ansi (name
, name_a
);
5031 /* If NAME includes characters not representable by
5032 the current ANSI codepage, filename_to_ansi
5033 usually replaces them with a '?'. We don't want
5034 to let FindFirstFileA interpret those as wildcards,
5035 and "succeed", returning us data from some random
5036 file in the same directory. */
5037 if (_mbspbrk (name_a
, "?"))
5038 fh
= INVALID_HANDLE_VALUE
;
5040 fh
= FindFirstFileA (name_a
, &wfd_a
);
5041 have_wfd
= DIR_FIND_DATA_A
;
5043 if (fh
== INVALID_HANDLE_VALUE
)
5050 /* Note: if NAME is a symlink, the information we get from
5051 FindFirstFile is for the symlink, not its target. */
5052 if (have_wfd
== DIR_FIND_DATA_W
)
5054 fattrs
= wfd_w
.dwFileAttributes
;
5055 ctime
= wfd_w
.ftCreationTime
;
5056 atime
= wfd_w
.ftLastAccessTime
;
5057 wtime
= wfd_w
.ftLastWriteTime
;
5058 fs_high
= wfd_w
.nFileSizeHigh
;
5059 fs_low
= wfd_w
.nFileSizeLow
;
5063 fattrs
= wfd_a
.dwFileAttributes
;
5064 ctime
= wfd_a
.ftCreationTime
;
5065 atime
= wfd_a
.ftLastAccessTime
;
5066 wtime
= wfd_a
.ftLastWriteTime
;
5067 fs_high
= wfd_a
.nFileSizeHigh
;
5068 fs_low
= wfd_a
.nFileSizeLow
;
5072 serialnum
= volume_info
.serialnum
;
5074 if (is_a_symlink
&& !follow_symlinks
)
5075 buf
->st_mode
= S_IFLNK
;
5076 else if (fattrs
& FILE_ATTRIBUTE_DIRECTORY
)
5077 buf
->st_mode
= S_IFDIR
;
5079 buf
->st_mode
= S_IFREG
;
5081 get_file_owner_and_group (NULL
, buf
);
5084 buf
->st_ino
= fake_inode
;
5086 buf
->st_dev
= serialnum
;
5087 buf
->st_rdev
= serialnum
;
5089 buf
->st_size
= fs_high
;
5090 buf
->st_size
<<= 32;
5091 buf
->st_size
+= fs_low
;
5092 buf
->st_nlink
= nlinks
;
5094 /* Convert timestamps to Unix format. */
5095 buf
->st_mtime
= convert_time (wtime
);
5096 buf
->st_atime
= convert_time (atime
);
5097 if (buf
->st_atime
== 0) buf
->st_atime
= buf
->st_mtime
;
5098 buf
->st_ctime
= convert_time (ctime
);
5099 if (buf
->st_ctime
== 0) buf
->st_ctime
= buf
->st_mtime
;
5101 /* determine rwx permissions */
5102 if (is_a_symlink
&& !follow_symlinks
)
5103 permission
= S_IREAD
| S_IWRITE
| S_IEXEC
; /* Posix expectations */
5106 if (fattrs
& FILE_ATTRIBUTE_READONLY
)
5107 permission
= S_IREAD
;
5109 permission
= S_IREAD
| S_IWRITE
;
5111 if (fattrs
& FILE_ATTRIBUTE_DIRECTORY
)
5112 permission
|= S_IEXEC
;
5113 else if (is_exec (name
))
5114 permission
|= S_IEXEC
;
5117 buf
->st_mode
|= permission
| (permission
>> 3) | (permission
>> 6);
5123 stat (const char * path
, struct stat
* buf
)
5125 return stat_worker (path
, buf
, 1);
5129 lstat (const char * path
, struct stat
* buf
)
5131 return stat_worker (path
, buf
, 0);
5135 fstatat (int fd
, char const *name
, struct stat
*st
, int flags
)
5137 /* Rely on a hack: an open directory is modeled as file descriptor 0.
5138 This is good enough for the current usage in Emacs, but is fragile.
5140 FIXME: Add proper support for fdopendir, fstatat, readlinkat.
5141 Gnulib does this and can serve as a model. */
5142 char fullname
[MAX_UTF8_PATH
];
5146 char lastc
= dir_pathname
[strlen (dir_pathname
) - 1];
5148 if (_snprintf (fullname
, sizeof fullname
, "%s%s%s",
5149 dir_pathname
, IS_DIRECTORY_SEP (lastc
) ? "" : "/", name
)
5152 errno
= ENAMETOOLONG
;
5158 return stat_worker (name
, st
, ! (flags
& AT_SYMLINK_NOFOLLOW
));
5161 /* Provide fstat and utime as well as stat for consistent handling of
5164 fstat (int desc
, struct stat
* buf
)
5166 HANDLE fh
= (HANDLE
) _get_osfhandle (desc
);
5167 BY_HANDLE_FILE_INFORMATION info
;
5168 unsigned __int64 fake_inode
;
5171 switch (GetFileType (fh
) & ~FILE_TYPE_REMOTE
)
5173 case FILE_TYPE_DISK
:
5174 buf
->st_mode
= S_IFREG
;
5175 if (!GetFileInformationByHandle (fh
, &info
))
5181 case FILE_TYPE_PIPE
:
5182 buf
->st_mode
= S_IFIFO
;
5184 case FILE_TYPE_CHAR
:
5185 case FILE_TYPE_UNKNOWN
:
5187 buf
->st_mode
= S_IFCHR
;
5189 memset (&info
, 0, sizeof (info
));
5190 info
.dwFileAttributes
= 0;
5191 info
.ftCreationTime
= utc_base_ft
;
5192 info
.ftLastAccessTime
= utc_base_ft
;
5193 info
.ftLastWriteTime
= utc_base_ft
;
5196 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_DIRECTORY
)
5197 buf
->st_mode
= S_IFDIR
;
5199 buf
->st_nlink
= info
.nNumberOfLinks
;
5200 /* Might as well use file index to fake inode values, but this
5201 is not guaranteed to be unique unless we keep a handle open
5202 all the time (even then there are situations where it is
5203 not unique). Reputedly, there are at most 48 bits of info
5204 (on NTFS, presumably less on FAT). */
5205 fake_inode
= info
.nFileIndexHigh
;
5207 fake_inode
+= info
.nFileIndexLow
;
5209 /* MSVC defines _ino_t to be short; other libc's might not. */
5210 if (sizeof (buf
->st_ino
) == 2)
5211 buf
->st_ino
= fake_inode
^ (fake_inode
>> 16);
5213 buf
->st_ino
= fake_inode
;
5215 /* If the caller so requested, get the true file owner and group.
5216 Otherwise, consider the file to belong to the current user. */
5217 if (!w32_stat_get_owner_group
|| is_windows_9x () == TRUE
)
5218 get_file_owner_and_group (NULL
, buf
);
5221 PSECURITY_DESCRIPTOR psd
= NULL
;
5223 psd
= get_file_security_desc_by_handle (fh
);
5226 get_file_owner_and_group (psd
, buf
);
5230 get_file_owner_and_group (NULL
, buf
);
5233 buf
->st_dev
= info
.dwVolumeSerialNumber
;
5234 buf
->st_rdev
= info
.dwVolumeSerialNumber
;
5236 buf
->st_size
= info
.nFileSizeHigh
;
5237 buf
->st_size
<<= 32;
5238 buf
->st_size
+= info
.nFileSizeLow
;
5240 /* Convert timestamps to Unix format. */
5241 buf
->st_mtime
= convert_time (info
.ftLastWriteTime
);
5242 buf
->st_atime
= convert_time (info
.ftLastAccessTime
);
5243 if (buf
->st_atime
== 0) buf
->st_atime
= buf
->st_mtime
;
5244 buf
->st_ctime
= convert_time (info
.ftCreationTime
);
5245 if (buf
->st_ctime
== 0) buf
->st_ctime
= buf
->st_mtime
;
5247 /* determine rwx permissions */
5248 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_READONLY
)
5249 permission
= S_IREAD
;
5251 permission
= S_IREAD
| S_IWRITE
;
5253 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_DIRECTORY
)
5254 permission
|= S_IEXEC
;
5257 #if 0 /* no way of knowing the filename */
5258 char * p
= strrchr (name
, '.');
5260 (xstrcasecmp (p
, ".exe") == 0 ||
5261 xstrcasecmp (p
, ".com") == 0 ||
5262 xstrcasecmp (p
, ".bat") == 0 ||
5263 xstrcasecmp (p
, ".cmd") == 0))
5264 permission
|= S_IEXEC
;
5268 buf
->st_mode
|= permission
| (permission
>> 3) | (permission
>> 6);
5273 /* A version of 'utime' which handles directories as well as
5277 utime (const char *name
, struct utimbuf
*times
)
5279 struct utimbuf deftime
;
5286 deftime
.modtime
= deftime
.actime
= time (NULL
);
5290 if (w32_unicode_filenames
)
5292 wchar_t name_utf16
[MAX_PATH
];
5294 if (filename_to_utf16 (name
, name_utf16
) != 0)
5295 return -1; /* errno set by filename_to_utf16 */
5297 /* Need write access to set times. */
5298 fh
= CreateFileW (name_utf16
, FILE_WRITE_ATTRIBUTES
,
5299 /* If NAME specifies a directory, FILE_SHARE_DELETE
5300 allows other processes to delete files inside it,
5301 while we have the directory open. */
5302 FILE_SHARE_READ
| FILE_SHARE_WRITE
| FILE_SHARE_DELETE
,
5303 0, OPEN_EXISTING
, FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
5307 char name_ansi
[MAX_PATH
];
5309 if (filename_to_ansi (name
, name_ansi
) != 0)
5310 return -1; /* errno set by filename_to_ansi */
5312 fh
= CreateFileA (name_ansi
, FILE_WRITE_ATTRIBUTES
,
5313 FILE_SHARE_READ
| FILE_SHARE_WRITE
| FILE_SHARE_DELETE
,
5314 0, OPEN_EXISTING
, FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
5316 if (fh
!= INVALID_HANDLE_VALUE
)
5318 convert_from_time_t (times
->actime
, &atime
);
5319 convert_from_time_t (times
->modtime
, &mtime
);
5320 if (!SetFileTime (fh
, NULL
, &atime
, &mtime
))
5330 DWORD err
= GetLastError ();
5334 case ERROR_FILE_NOT_FOUND
:
5335 case ERROR_PATH_NOT_FOUND
:
5336 case ERROR_INVALID_DRIVE
:
5337 case ERROR_BAD_NETPATH
:
5338 case ERROR_DEV_NOT_EXIST
:
5339 /* ERROR_INVALID_NAME is the error CreateFile sets when the
5340 file name includes ?s, i.e. translation to ANSI failed. */
5341 case ERROR_INVALID_NAME
:
5344 case ERROR_TOO_MANY_OPEN_FILES
:
5347 case ERROR_ACCESS_DENIED
:
5348 case ERROR_SHARING_VIOLATION
:
5361 sys_umask (int mode
)
5363 static int current_mask
;
5364 int retval
, arg
= 0;
5366 /* The only bit we really support is the write bit. Files are
5367 always readable on MS-Windows, and the execute bit does not exist
5369 /* FIXME: if the GROUP and OTHER bits are reset, we should use ACLs
5370 to prevent access by other users on NTFS. */
5371 if ((mode
& S_IWRITE
) != 0)
5374 retval
= _umask (arg
);
5375 /* Merge into the return value the bits they've set the last time,
5376 which msvcrt.dll ignores and never returns. Emacs insists on its
5377 notion of mask being identical to what we return. */
5378 retval
|= (current_mask
& ~S_IWRITE
);
5379 current_mask
= mode
;
5385 /* Symlink-related functions. */
5386 #ifndef SYMBOLIC_LINK_FLAG_DIRECTORY
5387 #define SYMBOLIC_LINK_FLAG_DIRECTORY 0x1
5391 symlink (char const *filename
, char const *linkname
)
5393 char linkfn
[MAX_UTF8_PATH
], *tgtfn
;
5395 int dir_access
, filename_ends_in_slash
;
5397 /* Diagnostics follows Posix as much as possible. */
5398 if (filename
== NULL
|| linkname
== NULL
)
5408 if (strlen (filename
) > MAX_UTF8_PATH
|| strlen (linkname
) > MAX_UTF8_PATH
)
5410 errno
= ENAMETOOLONG
;
5414 strcpy (linkfn
, map_w32_filename (linkname
, NULL
));
5415 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) == 0)
5421 /* Note: since empty FILENAME was already rejected, we can safely
5422 refer to FILENAME[1]. */
5423 if (!(IS_DIRECTORY_SEP (filename
[0]) || IS_DEVICE_SEP (filename
[1])))
5425 /* Non-absolute FILENAME is understood as being relative to
5426 LINKNAME's directory. We need to prepend that directory to
5427 FILENAME to get correct results from faccessat below, since
5428 otherwise it will interpret FILENAME relative to the
5429 directory where the Emacs process runs. Note that
5430 make-symbolic-link always makes sure LINKNAME is a fully
5431 expanded file name. */
5432 char tem
[MAX_UTF8_PATH
];
5433 char *p
= linkfn
+ strlen (linkfn
);
5435 while (p
> linkfn
&& !IS_ANY_SEP (p
[-1]))
5438 strncpy (tem
, linkfn
, p
- linkfn
);
5439 strcpy (tem
+ (p
- linkfn
), filename
);
5440 dir_access
= faccessat (AT_FDCWD
, tem
, D_OK
, AT_EACCESS
);
5443 dir_access
= faccessat (AT_FDCWD
, filename
, D_OK
, AT_EACCESS
);
5445 /* Since Windows distinguishes between symlinks to directories and
5446 to files, we provide a kludgy feature: if FILENAME doesn't
5447 exist, but ends in a slash, we create a symlink to directory. If
5448 FILENAME exists and is a directory, we always create a symlink to
5450 filename_ends_in_slash
= IS_DIRECTORY_SEP (filename
[strlen (filename
) - 1]);
5451 if (dir_access
== 0 || filename_ends_in_slash
)
5452 flags
= SYMBOLIC_LINK_FLAG_DIRECTORY
;
5454 tgtfn
= (char *)map_w32_filename (filename
, NULL
);
5455 if (filename_ends_in_slash
)
5456 tgtfn
[strlen (tgtfn
) - 1] = '\0';
5459 if (!create_symbolic_link (linkfn
, tgtfn
, flags
))
5461 /* ENOSYS is set by create_symbolic_link, when it detects that
5462 the OS doesn't support the CreateSymbolicLink API. */
5463 if (errno
!= ENOSYS
)
5465 DWORD w32err
= GetLastError ();
5469 /* ERROR_SUCCESS is sometimes returned when LINKFN and
5470 TGTFN point to the same file name, go figure. */
5472 case ERROR_FILE_EXISTS
:
5475 case ERROR_ACCESS_DENIED
:
5478 case ERROR_FILE_NOT_FOUND
:
5479 case ERROR_PATH_NOT_FOUND
:
5480 case ERROR_BAD_NETPATH
:
5481 case ERROR_INVALID_REPARSE_DATA
:
5484 case ERROR_DIRECTORY
:
5487 case ERROR_PRIVILEGE_NOT_HELD
:
5488 case ERROR_NOT_ALL_ASSIGNED
:
5491 case ERROR_DISK_FULL
:
5504 /* A quick inexpensive test of whether FILENAME identifies a file that
5505 is a symlink. Returns non-zero if it is, zero otherwise. FILENAME
5506 must already be in the normalized form returned by
5509 Note: for repeated operations on many files, it is best to test
5510 whether the underlying volume actually supports symlinks, by
5511 testing the FILE_SUPPORTS_REPARSE_POINTS bit in volume's flags, and
5512 avoid the call to this function if it doesn't. That's because the
5513 call to GetFileAttributes takes a non-negligible time, especially
5514 on non-local or removable filesystems. See stat_worker for an
5515 example of how to do that. */
5517 is_symlink (const char *filename
)
5520 wchar_t filename_w
[MAX_PATH
];
5521 char filename_a
[MAX_PATH
];
5522 WIN32_FIND_DATAW wfdw
;
5523 WIN32_FIND_DATAA wfda
;
5525 int attrs_mean_symlink
;
5527 if (w32_unicode_filenames
)
5529 filename_to_utf16 (filename
, filename_w
);
5530 attrs
= GetFileAttributesW (filename_w
);
5534 filename_to_ansi (filename
, filename_a
);
5535 attrs
= GetFileAttributesA (filename_a
);
5539 DWORD w32err
= GetLastError ();
5543 case ERROR_BAD_NETPATH
: /* network share, can't be a symlink */
5545 case ERROR_ACCESS_DENIED
:
5548 case ERROR_FILE_NOT_FOUND
:
5549 case ERROR_PATH_NOT_FOUND
:
5556 if ((attrs
& FILE_ATTRIBUTE_REPARSE_POINT
) == 0)
5558 logon_network_drive (filename
);
5559 if (w32_unicode_filenames
)
5561 fh
= FindFirstFileW (filename_w
, &wfdw
);
5562 attrs_mean_symlink
=
5563 (wfdw
.dwFileAttributes
& FILE_ATTRIBUTE_REPARSE_POINT
) != 0
5564 && (wfdw
.dwReserved0
& IO_REPARSE_TAG_SYMLINK
) == IO_REPARSE_TAG_SYMLINK
;
5566 else if (_mbspbrk (filename_a
, "?"))
5568 /* filename_to_ansi failed to convert the file name. */
5574 fh
= FindFirstFileA (filename_a
, &wfda
);
5575 attrs_mean_symlink
=
5576 (wfda
.dwFileAttributes
& FILE_ATTRIBUTE_REPARSE_POINT
) != 0
5577 && (wfda
.dwReserved0
& IO_REPARSE_TAG_SYMLINK
) == IO_REPARSE_TAG_SYMLINK
;
5579 if (fh
== INVALID_HANDLE_VALUE
)
5582 return attrs_mean_symlink
;
5585 /* If NAME identifies a symbolic link, copy into BUF the file name of
5586 the symlink's target. Copy at most BUF_SIZE bytes, and do NOT
5587 null-terminate the target name, even if it fits. Return the number
5588 of bytes copied, or -1 if NAME is not a symlink or any error was
5589 encountered while resolving it. The file name copied into BUF is
5590 encoded in the current ANSI codepage. */
5592 readlink (const char *name
, char *buf
, size_t buf_size
)
5595 TOKEN_PRIVILEGES privs
;
5596 int restore_privs
= 0;
5599 char resolved
[MAX_UTF8_PATH
];
5612 path
= map_w32_filename (name
, NULL
);
5614 if (strlen (path
) > MAX_UTF8_PATH
)
5616 errno
= ENAMETOOLONG
;
5621 if (is_windows_9x () == TRUE
5622 || (volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) == 0
5623 || !is_symlink (path
))
5626 errno
= EINVAL
; /* not a symlink */
5630 /* Done with simple tests, now we're in for some _real_ work. */
5631 if (enable_privilege (SE_BACKUP_NAME
, TRUE
, &privs
))
5633 /* Implementation note: From here and onward, don't return early,
5634 since that will fail to restore the original set of privileges of
5635 the calling thread. */
5637 retval
= -1; /* not too optimistic, are we? */
5639 /* Note: In the next call to CreateFile, we use zero as the 2nd
5640 argument because, when the symlink is a hidden/system file,
5641 e.g. 'C:\Users\All Users', GENERIC_READ fails with
5642 ERROR_ACCESS_DENIED. Zero seems to work just fine, both for file
5643 and directory symlinks. */
5644 if (w32_unicode_filenames
)
5646 wchar_t path_w
[MAX_PATH
];
5648 filename_to_utf16 (path
, path_w
);
5649 sh
= CreateFileW (path_w
, 0, 0, NULL
, OPEN_EXISTING
,
5650 FILE_FLAG_OPEN_REPARSE_POINT
5651 | FILE_FLAG_BACKUP_SEMANTICS
,
5656 char path_a
[MAX_PATH
];
5658 filename_to_ansi (path
, path_a
);
5659 sh
= CreateFileA (path_a
, 0, 0, NULL
, OPEN_EXISTING
,
5660 FILE_FLAG_OPEN_REPARSE_POINT
5661 | FILE_FLAG_BACKUP_SEMANTICS
,
5664 if (sh
!= INVALID_HANDLE_VALUE
)
5666 BYTE reparse_buf
[MAXIMUM_REPARSE_DATA_BUFFER_SIZE
];
5667 REPARSE_DATA_BUFFER
*reparse_data
= (REPARSE_DATA_BUFFER
*)&reparse_buf
[0];
5670 if (!DeviceIoControl (sh
, FSCTL_GET_REPARSE_POINT
, NULL
, 0,
5671 reparse_buf
, MAXIMUM_REPARSE_DATA_BUFFER_SIZE
,
5674 else if (reparse_data
->ReparseTag
!= IO_REPARSE_TAG_SYMLINK
)
5678 /* Copy the link target name, in wide characters, from
5679 reparse_data, then convert it to multibyte encoding in
5680 the current locale's codepage. */
5684 reparse_data
->SymbolicLinkReparseBuffer
.PrintNameLength
;
5686 reparse_data
->SymbolicLinkReparseBuffer
.PathBuffer
5687 + reparse_data
->SymbolicLinkReparseBuffer
.PrintNameOffset
/sizeof(WCHAR
);
5688 size_t size_to_copy
= buf_size
;
5690 /* According to MSDN, PrintNameLength does not include the
5691 terminating null character. */
5692 lwname
= alloca ((lwname_len
+ 1) * sizeof(WCHAR
));
5693 memcpy (lwname
, lwname_src
, lwname_len
);
5694 lwname
[lwname_len
/sizeof(WCHAR
)] = 0; /* null-terminate */
5695 filename_from_utf16 (lwname
, resolved
);
5696 dostounix_filename (resolved
);
5697 lname_size
= strlen (resolved
) + 1;
5698 if (lname_size
<= buf_size
)
5699 size_to_copy
= lname_size
;
5700 strncpy (buf
, resolved
, size_to_copy
);
5702 retval
= size_to_copy
;
5708 /* CreateFile failed. */
5709 DWORD w32err2
= GetLastError ();
5713 case ERROR_FILE_NOT_FOUND
:
5714 case ERROR_PATH_NOT_FOUND
:
5717 case ERROR_ACCESS_DENIED
:
5718 case ERROR_TOO_MANY_OPEN_FILES
:
5728 restore_privilege (&privs
);
5736 readlinkat (int fd
, char const *name
, char *buffer
,
5739 /* Rely on a hack: an open directory is modeled as file descriptor 0,
5740 as in fstatat. FIXME: Add proper support for readlinkat. */
5741 char fullname
[MAX_UTF8_PATH
];
5745 if (_snprintf (fullname
, sizeof fullname
, "%s/%s", dir_pathname
, name
)
5748 errno
= ENAMETOOLONG
;
5754 return readlink (name
, buffer
, buffer_size
);
5757 /* If FILE is a symlink, return its target (stored in a static
5758 buffer); otherwise return FILE.
5760 This function repeatedly resolves symlinks in the last component of
5761 a chain of symlink file names, as in foo -> bar -> baz -> ...,
5762 until it arrives at a file whose last component is not a symlink,
5763 or some error occurs. It returns the target of the last
5764 successfully resolved symlink in the chain. If it succeeds to
5765 resolve even a single symlink, the value returned is an absolute
5766 file name with backslashes (result of GetFullPathName). By
5767 contrast, if the original FILE is returned, it is unaltered.
5769 Note: This function can set errno even if it succeeds.
5771 Implementation note: we only resolve the last portion ("basename")
5772 of the argument FILE and of each following file in the chain,
5773 disregarding any possible symlinks in its leading directories.
5774 This is because Windows system calls and library functions
5775 transparently resolve symlinks in leading directories and return
5776 correct information, as long as the basename is not a symlink. */
5778 chase_symlinks (const char *file
)
5780 static char target
[MAX_UTF8_PATH
];
5781 char link
[MAX_UTF8_PATH
];
5782 wchar_t target_w
[MAX_PATH
], link_w
[MAX_PATH
];
5783 char target_a
[MAX_PATH
], link_a
[MAX_PATH
];
5784 ssize_t res
, link_len
;
5787 if (is_windows_9x () == TRUE
|| !is_symlink (file
))
5788 return (char *)file
;
5790 if (w32_unicode_filenames
)
5792 wchar_t file_w
[MAX_PATH
];
5794 filename_to_utf16 (file
, file_w
);
5795 if (GetFullPathNameW (file_w
, MAX_PATH
, link_w
, NULL
) == 0)
5796 return (char *)file
;
5797 filename_from_utf16 (link_w
, link
);
5801 char file_a
[MAX_PATH
];
5803 filename_to_ansi (file
, file_a
);
5804 if (GetFullPathNameA (file_a
, MAX_PATH
, link_a
, NULL
) == 0)
5805 return (char *)file
;
5806 filename_from_ansi (link_a
, link
);
5808 link_len
= strlen (link
);
5813 /* Remove trailing slashes, as we want to resolve the last
5814 non-trivial part of the link name. */
5815 while (link_len
> 3 && IS_DIRECTORY_SEP (link
[link_len
-1]))
5816 link
[link_len
--] = '\0';
5818 res
= readlink (link
, target
, MAX_UTF8_PATH
);
5822 if (!(IS_DEVICE_SEP (target
[1])
5823 || (IS_DIRECTORY_SEP (target
[0]) && IS_DIRECTORY_SEP (target
[1]))))
5825 /* Target is relative. Append it to the directory part of
5826 the symlink, then copy the result back to target. */
5827 char *p
= link
+ link_len
;
5829 while (p
> link
&& !IS_ANY_SEP (p
[-1]))
5832 strcpy (target
, link
);
5834 /* Resolve any "." and ".." to get a fully-qualified file name
5836 if (w32_unicode_filenames
)
5838 filename_to_utf16 (target
, target_w
);
5839 link_len
= GetFullPathNameW (target_w
, MAX_PATH
, link_w
, NULL
);
5841 filename_from_utf16 (link_w
, link
);
5845 filename_to_ansi (target
, target_a
);
5846 link_len
= GetFullPathNameA (target_a
, MAX_PATH
, link_a
, NULL
);
5848 filename_from_ansi (link_a
, link
);
5850 link_len
= strlen (link
);
5852 } while (res
> 0 && link_len
> 0 && ++loop_count
<= 100);
5854 if (loop_count
> 100)
5857 if (target
[0] == '\0') /* not a single call to readlink succeeded */
5858 return (char *)file
;
5863 /* Posix ACL emulation. */
5866 acl_valid (acl_t acl
)
5868 return is_valid_security_descriptor ((PSECURITY_DESCRIPTOR
)acl
) ? 0 : -1;
5872 acl_to_text (acl_t acl
, ssize_t
*size
)
5875 SECURITY_INFORMATION flags
=
5876 OWNER_SECURITY_INFORMATION
|
5877 GROUP_SECURITY_INFORMATION
|
5878 DACL_SECURITY_INFORMATION
;
5879 char *retval
= NULL
;
5885 if (convert_sd_to_sddl ((PSECURITY_DESCRIPTOR
)acl
, SDDL_REVISION_1
, flags
, &str_acl
, &local_size
))
5888 /* We don't want to mix heaps, so we duplicate the string in our
5889 heap and free the one allocated by the API. */
5890 retval
= xstrdup (str_acl
);
5893 LocalFree (str_acl
);
5895 else if (errno
!= ENOTSUP
)
5902 acl_from_text (const char *acl_str
)
5904 PSECURITY_DESCRIPTOR psd
, retval
= NULL
;
5910 if (convert_sddl_to_sd (acl_str
, SDDL_REVISION_1
, &psd
, &sd_size
))
5913 retval
= xmalloc (sd_size
);
5914 memcpy (retval
, psd
, sd_size
);
5917 else if (errno
!= ENOTSUP
)
5924 acl_free (void *ptr
)
5931 acl_get_file (const char *fname
, acl_type_t type
)
5933 PSECURITY_DESCRIPTOR psd
= NULL
;
5934 const char *filename
;
5936 if (type
== ACL_TYPE_ACCESS
)
5939 SECURITY_INFORMATION si
=
5940 OWNER_SECURITY_INFORMATION
|
5941 GROUP_SECURITY_INFORMATION
|
5942 DACL_SECURITY_INFORMATION
;
5945 filename
= map_w32_filename (fname
, NULL
);
5946 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) != 0)
5947 fname
= chase_symlinks (filename
);
5952 if (!get_file_security (fname
, si
, psd
, 0, &sd_len
)
5953 && errno
!= ENOTSUP
)
5955 err
= GetLastError ();
5956 if (err
== ERROR_INSUFFICIENT_BUFFER
)
5958 psd
= xmalloc (sd_len
);
5959 if (!get_file_security (fname
, si
, psd
, sd_len
, &sd_len
))
5966 else if (err
== ERROR_FILE_NOT_FOUND
5967 || err
== ERROR_PATH_NOT_FOUND
5968 /* ERROR_INVALID_NAME is what we get if
5969 w32-unicode-filenames is nil and the file cannot
5970 be encoded in the current ANSI codepage. */
5971 || err
== ERROR_INVALID_NAME
)
5979 else if (type
!= ACL_TYPE_DEFAULT
)
5986 acl_set_file (const char *fname
, acl_type_t type
, acl_t acl
)
5988 TOKEN_PRIVILEGES old1
, old2
;
5990 int st
= 0, retval
= -1;
5991 SECURITY_INFORMATION flags
= 0;
5992 PSID psidOwner
, psidGroup
;
5997 const char *filename
;
5999 if (acl_valid (acl
) != 0
6000 || (type
!= ACL_TYPE_DEFAULT
&& type
!= ACL_TYPE_ACCESS
))
6006 if (type
== ACL_TYPE_DEFAULT
)
6012 filename
= map_w32_filename (fname
, NULL
);
6013 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) != 0)
6014 fname
= chase_symlinks (filename
);
6018 if (get_security_descriptor_owner ((PSECURITY_DESCRIPTOR
)acl
, &psidOwner
,
6021 flags
|= OWNER_SECURITY_INFORMATION
;
6022 if (get_security_descriptor_group ((PSECURITY_DESCRIPTOR
)acl
, &psidGroup
,
6025 flags
|= GROUP_SECURITY_INFORMATION
;
6026 if (get_security_descriptor_dacl ((PSECURITY_DESCRIPTOR
)acl
, &dacl_present
,
6029 flags
|= DACL_SECURITY_INFORMATION
;
6033 /* According to KB-245153, setting the owner will succeed if either:
6034 (1) the caller is the user who will be the new owner, and has the
6035 SE_TAKE_OWNERSHIP privilege, or
6036 (2) the caller has the SE_RESTORE privilege, in which case she can
6037 set any valid user or group as the owner
6039 We request below both SE_TAKE_OWNERSHIP and SE_RESTORE
6040 privileges, and disregard any failures in obtaining them. If
6041 these privileges cannot be obtained, and do not already exist in
6042 the calling thread's security token, this function could fail
6044 if (enable_privilege (SE_TAKE_OWNERSHIP_NAME
, TRUE
, &old1
))
6046 if (enable_privilege (SE_RESTORE_NAME
, TRUE
, &old2
))
6051 /* SetFileSecurity is deprecated by MS, and sometimes fails when
6052 DACL inheritance is involved, but it seems to preserve ownership
6053 better than SetNamedSecurityInfo, which is important e.g., in
6055 if (!set_file_security (fname
, flags
, (PSECURITY_DESCRIPTOR
)acl
))
6057 err
= GetLastError ();
6059 if (errno
!= ENOTSUP
)
6060 err
= set_named_security_info (fname
, SE_FILE_OBJECT
, flags
,
6061 psidOwner
, psidGroup
, pacl
, NULL
);
6064 err
= ERROR_SUCCESS
;
6065 if (err
!= ERROR_SUCCESS
)
6067 if (errno
== ENOTSUP
)
6069 else if (err
== ERROR_INVALID_OWNER
6070 || err
== ERROR_NOT_ALL_ASSIGNED
6071 || err
== ERROR_ACCESS_DENIED
)
6073 /* Maybe the requested ACL and the one the file already has
6074 are identical, in which case we can silently ignore the
6075 failure. (And no, Windows doesn't.) */
6076 acl_t current_acl
= acl_get_file (fname
, ACL_TYPE_ACCESS
);
6081 char *acl_from
= acl_to_text (current_acl
, NULL
);
6082 char *acl_to
= acl_to_text (acl
, NULL
);
6084 if (acl_from
&& acl_to
&& xstrcasecmp (acl_from
, acl_to
) == 0)
6090 acl_free (acl_from
);
6093 acl_free (current_acl
);
6096 else if (err
== ERROR_FILE_NOT_FOUND
6097 || err
== ERROR_PATH_NOT_FOUND
6098 /* ERROR_INVALID_NAME is what we get if
6099 w32-unicode-filenames is nil and the file cannot be
6100 encoded in the current ANSI codepage. */
6101 || err
== ERROR_INVALID_NAME
)
6115 restore_privilege (&old2
);
6116 restore_privilege (&old1
);
6124 /* MS-Windows version of careadlinkat (cf. ../lib/careadlinkat.c). We
6125 have a fixed max size for file names, so we don't need the kind of
6126 alloc/malloc/realloc dance the gnulib version does. We also don't
6127 support FD-relative symlinks. */
6129 careadlinkat (int fd
, char const *filename
,
6130 char *buffer
, size_t buffer_size
,
6131 struct allocator
const *alloc
,
6132 ssize_t (*preadlinkat
) (int, char const *, char *, size_t))
6134 char linkname
[MAX_UTF8_PATH
];
6137 link_size
= preadlinkat (fd
, filename
, linkname
, sizeof(linkname
));
6141 char *retval
= buffer
;
6143 linkname
[link_size
++] = '\0';
6144 if (link_size
> buffer_size
)
6145 retval
= (char *)(alloc
? alloc
->allocate
: xmalloc
) (link_size
);
6147 memcpy (retval
, linkname
, link_size
);
6155 w32_copy_file (const char *from
, const char *to
,
6156 int keep_time
, int preserve_ownership
, int copy_acls
)
6160 wchar_t from_w
[MAX_PATH
], to_w
[MAX_PATH
];
6161 char from_a
[MAX_PATH
], to_a
[MAX_PATH
];
6163 /* We ignore preserve_ownership for now. */
6164 preserve_ownership
= preserve_ownership
;
6168 acl
= acl_get_file (from
, ACL_TYPE_ACCESS
);
6169 if (acl
== NULL
&& acl_errno_valid (errno
))
6172 if (w32_unicode_filenames
)
6174 filename_to_utf16 (from
, from_w
);
6175 filename_to_utf16 (to
, to_w
);
6176 copy_result
= CopyFileW (from_w
, to_w
, FALSE
);
6180 filename_to_ansi (from
, from_a
);
6181 filename_to_ansi (to
, to_a
);
6182 copy_result
= CopyFileA (from_a
, to_a
, FALSE
);
6186 /* CopyFile doesn't set errno when it fails. By far the most
6187 "popular" reason is that the target is read-only. */
6188 DWORD err
= GetLastError ();
6192 case ERROR_FILE_NOT_FOUND
:
6195 case ERROR_ACCESS_DENIED
:
6198 case ERROR_ENCRYPTION_FAILED
:
6210 /* CopyFile retains the timestamp by default. However, see
6211 "Community Additions" for CopyFile: it sounds like that is not
6212 entirely true. Testing on Windows XP confirms that modified time
6213 is copied, but creation and last-access times are not.
6215 else if (!keep_time
)
6217 struct timespec now
;
6220 if (w32_unicode_filenames
)
6222 /* Ensure file is writable while its times are set. */
6223 attributes
= GetFileAttributesW (to_w
);
6224 SetFileAttributesW (to_w
, attributes
& ~FILE_ATTRIBUTE_READONLY
);
6225 now
= current_timespec ();
6226 if (set_file_times (-1, to
, now
, now
))
6228 /* Restore original attributes. */
6229 SetFileAttributesW (to_w
, attributes
);
6234 /* Restore original attributes. */
6235 SetFileAttributesW (to_w
, attributes
);
6239 attributes
= GetFileAttributesA (to_a
);
6240 SetFileAttributesA (to_a
, attributes
& ~FILE_ATTRIBUTE_READONLY
);
6241 now
= current_timespec ();
6242 if (set_file_times (-1, to
, now
, now
))
6244 SetFileAttributesA (to_a
, attributes
);
6249 SetFileAttributesA (to_a
, attributes
);
6255 acl_set_file (to
, ACL_TYPE_ACCESS
, acl
) != 0;
6257 if (fail
&& acl_errno_valid (errno
))
6265 /* Support for browsing other processes and their attributes. See
6266 process.c for the Lisp bindings. */
6268 /* Helper wrapper functions. */
6270 static HANDLE WINAPI
6271 create_toolhelp32_snapshot (DWORD Flags
, DWORD Ignored
)
6273 static CreateToolhelp32Snapshot_Proc s_pfn_Create_Toolhelp32_Snapshot
= NULL
;
6275 if (g_b_init_create_toolhelp32_snapshot
== 0)
6277 g_b_init_create_toolhelp32_snapshot
= 1;
6278 s_pfn_Create_Toolhelp32_Snapshot
= (CreateToolhelp32Snapshot_Proc
)
6279 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6280 "CreateToolhelp32Snapshot");
6282 if (s_pfn_Create_Toolhelp32_Snapshot
== NULL
)
6284 return INVALID_HANDLE_VALUE
;
6286 return (s_pfn_Create_Toolhelp32_Snapshot (Flags
, Ignored
));
6290 process32_first (HANDLE hSnapshot
, LPPROCESSENTRY32 lppe
)
6292 static Process32First_Proc s_pfn_Process32_First
= NULL
;
6294 if (g_b_init_process32_first
== 0)
6296 g_b_init_process32_first
= 1;
6297 s_pfn_Process32_First
= (Process32First_Proc
)
6298 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6301 if (s_pfn_Process32_First
== NULL
)
6305 return (s_pfn_Process32_First (hSnapshot
, lppe
));
6309 process32_next (HANDLE hSnapshot
, LPPROCESSENTRY32 lppe
)
6311 static Process32Next_Proc s_pfn_Process32_Next
= NULL
;
6313 if (g_b_init_process32_next
== 0)
6315 g_b_init_process32_next
= 1;
6316 s_pfn_Process32_Next
= (Process32Next_Proc
)
6317 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6320 if (s_pfn_Process32_Next
== NULL
)
6324 return (s_pfn_Process32_Next (hSnapshot
, lppe
));
6328 open_thread_token (HANDLE ThreadHandle
,
6329 DWORD DesiredAccess
,
6331 PHANDLE TokenHandle
)
6333 static OpenThreadToken_Proc s_pfn_Open_Thread_Token
= NULL
;
6334 HMODULE hm_advapi32
= NULL
;
6335 if (is_windows_9x () == TRUE
)
6337 SetLastError (ERROR_NOT_SUPPORTED
);
6340 if (g_b_init_open_thread_token
== 0)
6342 g_b_init_open_thread_token
= 1;
6343 hm_advapi32
= LoadLibrary ("Advapi32.dll");
6344 s_pfn_Open_Thread_Token
=
6345 (OpenThreadToken_Proc
) GetProcAddress (hm_advapi32
, "OpenThreadToken");
6347 if (s_pfn_Open_Thread_Token
== NULL
)
6349 SetLastError (ERROR_NOT_SUPPORTED
);
6353 s_pfn_Open_Thread_Token (
6362 impersonate_self (SECURITY_IMPERSONATION_LEVEL ImpersonationLevel
)
6364 static ImpersonateSelf_Proc s_pfn_Impersonate_Self
= NULL
;
6365 HMODULE hm_advapi32
= NULL
;
6366 if (is_windows_9x () == TRUE
)
6370 if (g_b_init_impersonate_self
== 0)
6372 g_b_init_impersonate_self
= 1;
6373 hm_advapi32
= LoadLibrary ("Advapi32.dll");
6374 s_pfn_Impersonate_Self
=
6375 (ImpersonateSelf_Proc
) GetProcAddress (hm_advapi32
, "ImpersonateSelf");
6377 if (s_pfn_Impersonate_Self
== NULL
)
6381 return s_pfn_Impersonate_Self (ImpersonationLevel
);
6385 revert_to_self (void)
6387 static RevertToSelf_Proc s_pfn_Revert_To_Self
= NULL
;
6388 HMODULE hm_advapi32
= NULL
;
6389 if (is_windows_9x () == TRUE
)
6393 if (g_b_init_revert_to_self
== 0)
6395 g_b_init_revert_to_self
= 1;
6396 hm_advapi32
= LoadLibrary ("Advapi32.dll");
6397 s_pfn_Revert_To_Self
=
6398 (RevertToSelf_Proc
) GetProcAddress (hm_advapi32
, "RevertToSelf");
6400 if (s_pfn_Revert_To_Self
== NULL
)
6404 return s_pfn_Revert_To_Self ();
6408 get_process_memory_info (HANDLE h_proc
,
6409 PPROCESS_MEMORY_COUNTERS mem_counters
,
6412 static GetProcessMemoryInfo_Proc s_pfn_Get_Process_Memory_Info
= NULL
;
6413 HMODULE hm_psapi
= NULL
;
6414 if (is_windows_9x () == TRUE
)
6418 if (g_b_init_get_process_memory_info
== 0)
6420 g_b_init_get_process_memory_info
= 1;
6421 hm_psapi
= LoadLibrary ("Psapi.dll");
6423 s_pfn_Get_Process_Memory_Info
= (GetProcessMemoryInfo_Proc
)
6424 GetProcAddress (hm_psapi
, "GetProcessMemoryInfo");
6426 if (s_pfn_Get_Process_Memory_Info
== NULL
)
6430 return s_pfn_Get_Process_Memory_Info (h_proc
, mem_counters
, bufsize
);
6434 get_process_working_set_size (HANDLE h_proc
,
6438 static GetProcessWorkingSetSize_Proc
6439 s_pfn_Get_Process_Working_Set_Size
= NULL
;
6441 if (is_windows_9x () == TRUE
)
6445 if (g_b_init_get_process_working_set_size
== 0)
6447 g_b_init_get_process_working_set_size
= 1;
6448 s_pfn_Get_Process_Working_Set_Size
= (GetProcessWorkingSetSize_Proc
)
6449 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6450 "GetProcessWorkingSetSize");
6452 if (s_pfn_Get_Process_Working_Set_Size
== NULL
)
6456 return s_pfn_Get_Process_Working_Set_Size (h_proc
, minrss
, maxrss
);
6460 global_memory_status (MEMORYSTATUS
*buf
)
6462 static GlobalMemoryStatus_Proc s_pfn_Global_Memory_Status
= NULL
;
6464 if (is_windows_9x () == TRUE
)
6468 if (g_b_init_global_memory_status
== 0)
6470 g_b_init_global_memory_status
= 1;
6471 s_pfn_Global_Memory_Status
= (GlobalMemoryStatus_Proc
)
6472 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6473 "GlobalMemoryStatus");
6475 if (s_pfn_Global_Memory_Status
== NULL
)
6479 return s_pfn_Global_Memory_Status (buf
);
6483 global_memory_status_ex (MEMORY_STATUS_EX
*buf
)
6485 static GlobalMemoryStatusEx_Proc s_pfn_Global_Memory_Status_Ex
= NULL
;
6487 if (is_windows_9x () == TRUE
)
6491 if (g_b_init_global_memory_status_ex
== 0)
6493 g_b_init_global_memory_status_ex
= 1;
6494 s_pfn_Global_Memory_Status_Ex
= (GlobalMemoryStatusEx_Proc
)
6495 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6496 "GlobalMemoryStatusEx");
6498 if (s_pfn_Global_Memory_Status_Ex
== NULL
)
6502 return s_pfn_Global_Memory_Status_Ex (buf
);
6506 list_system_processes (void)
6508 struct gcpro gcpro1
;
6509 Lisp_Object proclist
= Qnil
;
6512 h_snapshot
= create_toolhelp32_snapshot (TH32CS_SNAPPROCESS
, 0);
6514 if (h_snapshot
!= INVALID_HANDLE_VALUE
)
6516 PROCESSENTRY32 proc_entry
;
6522 proc_entry
.dwSize
= sizeof (PROCESSENTRY32
);
6523 for (res
= process32_first (h_snapshot
, &proc_entry
); res
;
6524 res
= process32_next (h_snapshot
, &proc_entry
))
6526 proc_id
= proc_entry
.th32ProcessID
;
6527 proclist
= Fcons (make_fixnum_or_float (proc_id
), proclist
);
6530 CloseHandle (h_snapshot
);
6532 proclist
= Fnreverse (proclist
);
6539 enable_privilege (LPCTSTR priv_name
, BOOL enable_p
, TOKEN_PRIVILEGES
*old_priv
)
6541 TOKEN_PRIVILEGES priv
;
6542 DWORD priv_size
= sizeof (priv
);
6543 DWORD opriv_size
= sizeof (*old_priv
);
6544 HANDLE h_token
= NULL
;
6545 HANDLE h_thread
= GetCurrentThread ();
6549 res
= open_thread_token (h_thread
,
6550 TOKEN_QUERY
| TOKEN_ADJUST_PRIVILEGES
,
6552 if (!res
&& GetLastError () == ERROR_NO_TOKEN
)
6554 if (impersonate_self (SecurityImpersonation
))
6555 res
= open_thread_token (h_thread
,
6556 TOKEN_QUERY
| TOKEN_ADJUST_PRIVILEGES
,
6561 priv
.PrivilegeCount
= 1;
6562 priv
.Privileges
[0].Attributes
= enable_p
? SE_PRIVILEGE_ENABLED
: 0;
6563 LookupPrivilegeValue (NULL
, priv_name
, &priv
.Privileges
[0].Luid
);
6564 if (AdjustTokenPrivileges (h_token
, FALSE
, &priv
, priv_size
,
6565 old_priv
, &opriv_size
)
6566 && GetLastError () != ERROR_NOT_ALL_ASSIGNED
)
6570 CloseHandle (h_token
);
6576 restore_privilege (TOKEN_PRIVILEGES
*priv
)
6578 DWORD priv_size
= sizeof (*priv
);
6579 HANDLE h_token
= NULL
;
6582 if (open_thread_token (GetCurrentThread (),
6583 TOKEN_QUERY
| TOKEN_ADJUST_PRIVILEGES
,
6586 if (AdjustTokenPrivileges (h_token
, FALSE
, priv
, priv_size
, NULL
, NULL
)
6587 && GetLastError () != ERROR_NOT_ALL_ASSIGNED
)
6591 CloseHandle (h_token
);
6597 ltime (ULONGLONG time_100ns
)
6599 ULONGLONG time_sec
= time_100ns
/ 10000000;
6600 int subsec
= time_100ns
% 10000000;
6601 return list4i (time_sec
>> 16, time_sec
& 0xffff,
6602 subsec
/ 10, subsec
% 10 * 100000);
6605 #define U64_TO_LISP_TIME(time) ltime (time)
6608 process_times (HANDLE h_proc
, Lisp_Object
*ctime
, Lisp_Object
*etime
,
6609 Lisp_Object
*stime
, Lisp_Object
*utime
, Lisp_Object
*ttime
,
6612 FILETIME ft_creation
, ft_exit
, ft_kernel
, ft_user
, ft_current
;
6613 ULONGLONG tem1
, tem2
, tem3
, tem
;
6616 || !get_process_times_fn
6617 || !(*get_process_times_fn
) (h_proc
, &ft_creation
, &ft_exit
,
6618 &ft_kernel
, &ft_user
))
6621 GetSystemTimeAsFileTime (&ft_current
);
6623 FILETIME_TO_U64 (tem1
, ft_kernel
);
6624 *stime
= U64_TO_LISP_TIME (tem1
);
6626 FILETIME_TO_U64 (tem2
, ft_user
);
6627 *utime
= U64_TO_LISP_TIME (tem2
);
6630 *ttime
= U64_TO_LISP_TIME (tem3
);
6632 FILETIME_TO_U64 (tem
, ft_creation
);
6633 /* Process no 4 (System) returns zero creation time. */
6636 *ctime
= U64_TO_LISP_TIME (tem
);
6640 FILETIME_TO_U64 (tem3
, ft_current
);
6641 tem
= (tem3
- utc_base
) - tem
;
6643 *etime
= U64_TO_LISP_TIME (tem
);
6647 *pcpu
= 100.0 * (tem1
+ tem2
) / tem
;
6658 system_process_attributes (Lisp_Object pid
)
6660 struct gcpro gcpro1
, gcpro2
, gcpro3
;
6661 Lisp_Object attrs
= Qnil
;
6662 Lisp_Object cmd_str
, decoded_cmd
, tem
;
6663 HANDLE h_snapshot
, h_proc
;
6666 char uname
[UNLEN
+1], gname
[GNLEN
+1], domain
[1025];
6667 DWORD ulength
= sizeof (uname
), dlength
= sizeof (domain
), needed
;
6668 DWORD glength
= sizeof (gname
);
6669 HANDLE token
= NULL
;
6670 SID_NAME_USE user_type
;
6671 unsigned char *buf
= NULL
;
6673 TOKEN_USER user_token
;
6674 TOKEN_PRIMARY_GROUP group_token
;
6677 PROCESS_MEMORY_COUNTERS mem
;
6678 PROCESS_MEMORY_COUNTERS_EX mem_ex
;
6679 SIZE_T minrss
, maxrss
;
6681 MEMORY_STATUS_EX memstex
;
6682 double totphys
= 0.0;
6683 Lisp_Object ctime
, stime
, utime
, etime
, ttime
;
6685 BOOL result
= FALSE
;
6687 CHECK_NUMBER_OR_FLOAT (pid
);
6688 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
6690 h_snapshot
= create_toolhelp32_snapshot (TH32CS_SNAPPROCESS
, 0);
6692 GCPRO3 (attrs
, decoded_cmd
, tem
);
6694 if (h_snapshot
!= INVALID_HANDLE_VALUE
)
6699 pe
.dwSize
= sizeof (PROCESSENTRY32
);
6700 for (res
= process32_first (h_snapshot
, &pe
); res
;
6701 res
= process32_next (h_snapshot
, &pe
))
6703 if (proc_id
== pe
.th32ProcessID
)
6706 decoded_cmd
= build_string ("Idle");
6709 /* Decode the command name from locale-specific
6711 cmd_str
= build_unibyte_string (pe
.szExeFile
);
6714 code_convert_string_norecord (cmd_str
,
6715 Vlocale_coding_system
, 0);
6717 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
6718 attrs
= Fcons (Fcons (Qppid
,
6719 make_fixnum_or_float (pe
.th32ParentProcessID
)),
6721 attrs
= Fcons (Fcons (Qpri
, make_number (pe
.pcPriClassBase
)),
6723 attrs
= Fcons (Fcons (Qthcount
,
6724 make_fixnum_or_float (pe
.cntThreads
)),
6731 CloseHandle (h_snapshot
);
6740 h_proc
= OpenProcess (PROCESS_QUERY_INFORMATION
| PROCESS_VM_READ
,
6742 /* If we were denied a handle to the process, try again after
6743 enabling the SeDebugPrivilege in our process. */
6746 TOKEN_PRIVILEGES priv_current
;
6748 if (enable_privilege (SE_DEBUG_NAME
, TRUE
, &priv_current
))
6750 h_proc
= OpenProcess (PROCESS_QUERY_INFORMATION
| PROCESS_VM_READ
,
6752 restore_privilege (&priv_current
);
6758 result
= open_process_token (h_proc
, TOKEN_QUERY
, &token
);
6761 result
= get_token_information (token
, TokenUser
, NULL
, 0, &blen
);
6762 if (!result
&& GetLastError () == ERROR_INSUFFICIENT_BUFFER
)
6764 buf
= xmalloc (blen
);
6765 result
= get_token_information (token
, TokenUser
,
6766 (LPVOID
)buf
, blen
, &needed
);
6769 memcpy (&user_token
, buf
, sizeof (user_token
));
6770 if (!w32_cached_id (user_token
.User
.Sid
, &euid
, uname
))
6772 euid
= get_rid (user_token
.User
.Sid
);
6773 result
= lookup_account_sid (NULL
, user_token
.User
.Sid
,
6778 w32_add_to_cache (user_token
.User
.Sid
, euid
, uname
);
6781 strcpy (uname
, "unknown");
6785 ulength
= strlen (uname
);
6791 /* Determine a reasonable euid and gid values. */
6792 if (xstrcasecmp ("administrator", uname
) == 0)
6794 euid
= 500; /* well-known Administrator uid */
6795 egid
= 513; /* well-known None gid */
6799 /* Get group id and name. */
6800 result
= get_token_information (token
, TokenPrimaryGroup
,
6801 (LPVOID
)buf
, blen
, &needed
);
6802 if (!result
&& GetLastError () == ERROR_INSUFFICIENT_BUFFER
)
6804 buf
= xrealloc (buf
, blen
= needed
);
6805 result
= get_token_information (token
, TokenPrimaryGroup
,
6806 (LPVOID
)buf
, blen
, &needed
);
6810 memcpy (&group_token
, buf
, sizeof (group_token
));
6811 if (!w32_cached_id (group_token
.PrimaryGroup
, &egid
, gname
))
6813 egid
= get_rid (group_token
.PrimaryGroup
);
6814 dlength
= sizeof (domain
);
6816 lookup_account_sid (NULL
, group_token
.PrimaryGroup
,
6817 gname
, &glength
, NULL
, &dlength
,
6820 w32_add_to_cache (group_token
.PrimaryGroup
,
6824 strcpy (gname
, "None");
6828 glength
= strlen (gname
);
6836 if (!is_windows_9x ())
6838 /* We couldn't open the process token, presumably because of
6839 insufficient access rights. Assume this process is run
6841 strcpy (uname
, "SYSTEM");
6842 strcpy (gname
, "None");
6843 euid
= 18; /* SYSTEM */
6844 egid
= 513; /* None */
6845 glength
= strlen (gname
);
6846 ulength
= strlen (uname
);
6848 /* If we are running under Windows 9X, where security calls are
6849 not supported, we assume all processes are run by the current
6851 else if (GetUserName (uname
, &ulength
))
6853 if (xstrcasecmp ("administrator", uname
) == 0)
6858 strcpy (gname
, "None");
6859 glength
= strlen (gname
);
6860 ulength
= strlen (uname
);
6866 strcpy (uname
, "administrator");
6867 ulength
= strlen (uname
);
6868 strcpy (gname
, "None");
6869 glength
= strlen (gname
);
6872 CloseHandle (token
);
6875 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (euid
)), attrs
);
6876 tem
= make_unibyte_string (uname
, ulength
);
6877 attrs
= Fcons (Fcons (Quser
,
6878 code_convert_string_norecord (tem
, Vlocale_coding_system
, 0)),
6880 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (egid
)), attrs
);
6881 tem
= make_unibyte_string (gname
, glength
);
6882 attrs
= Fcons (Fcons (Qgroup
,
6883 code_convert_string_norecord (tem
, Vlocale_coding_system
, 0)),
6886 if (global_memory_status_ex (&memstex
))
6887 #if __GNUC__ || (defined (_MSC_VER) && _MSC_VER >= 1300)
6888 totphys
= memstex
.ullTotalPhys
/ 1024.0;
6890 /* Visual Studio 6 cannot convert an unsigned __int64 type to
6891 double, so we need to do this for it... */
6893 DWORD tot_hi
= memstex
.ullTotalPhys
>> 32;
6894 DWORD tot_md
= (memstex
.ullTotalPhys
& 0x00000000ffffffff) >> 10;
6895 DWORD tot_lo
= memstex
.ullTotalPhys
% 1024;
6897 totphys
= tot_hi
* 4194304.0 + tot_md
+ tot_lo
/ 1024.0;
6899 #endif /* __GNUC__ || _MSC_VER >= 1300 */
6900 else if (global_memory_status (&memst
))
6901 totphys
= memst
.dwTotalPhys
/ 1024.0;
6904 && get_process_memory_info (h_proc
, (PROCESS_MEMORY_COUNTERS
*)&mem_ex
,
6907 SIZE_T rss
= mem_ex
.WorkingSetSize
/ 1024;
6909 attrs
= Fcons (Fcons (Qmajflt
,
6910 make_fixnum_or_float (mem_ex
.PageFaultCount
)),
6912 attrs
= Fcons (Fcons (Qvsize
,
6913 make_fixnum_or_float (mem_ex
.PrivateUsage
/ 1024)),
6915 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (rss
)), attrs
);
6917 attrs
= Fcons (Fcons (Qpmem
, make_float (100. * rss
/ totphys
)), attrs
);
6920 && get_process_memory_info (h_proc
, &mem
, sizeof (mem
)))
6922 SIZE_T rss
= mem_ex
.WorkingSetSize
/ 1024;
6924 attrs
= Fcons (Fcons (Qmajflt
,
6925 make_fixnum_or_float (mem
.PageFaultCount
)),
6927 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (rss
)), attrs
);
6929 attrs
= Fcons (Fcons (Qpmem
, make_float (100. * rss
/ totphys
)), attrs
);
6932 && get_process_working_set_size (h_proc
, &minrss
, &maxrss
))
6934 DWORD rss
= maxrss
/ 1024;
6936 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (maxrss
/ 1024)), attrs
);
6938 attrs
= Fcons (Fcons (Qpmem
, make_float (100. * rss
/ totphys
)), attrs
);
6941 if (process_times (h_proc
, &ctime
, &etime
, &stime
, &utime
, &ttime
, &pcpu
))
6943 attrs
= Fcons (Fcons (Qutime
, utime
), attrs
);
6944 attrs
= Fcons (Fcons (Qstime
, stime
), attrs
);
6945 attrs
= Fcons (Fcons (Qtime
, ttime
), attrs
);
6946 attrs
= Fcons (Fcons (Qstart
, ctime
), attrs
);
6947 attrs
= Fcons (Fcons (Qetime
, etime
), attrs
);
6948 attrs
= Fcons (Fcons (Qpcpu
, make_float (pcpu
)), attrs
);
6951 /* FIXME: Retrieve command line by walking the PEB of the process. */
6954 CloseHandle (h_proc
);
6960 w32_memory_info (unsigned long long *totalram
, unsigned long long *freeram
,
6961 unsigned long long *totalswap
, unsigned long long *freeswap
)
6964 MEMORY_STATUS_EX memstex
;
6966 /* Use GlobalMemoryStatusEx if available, as it can report more than
6968 if (global_memory_status_ex (&memstex
))
6970 *totalram
= memstex
.ullTotalPhys
;
6971 *freeram
= memstex
.ullAvailPhys
;
6972 *totalswap
= memstex
.ullTotalPageFile
;
6973 *freeswap
= memstex
.ullAvailPageFile
;
6976 else if (global_memory_status (&memst
))
6978 *totalram
= memst
.dwTotalPhys
;
6979 *freeram
= memst
.dwAvailPhys
;
6980 *totalswap
= memst
.dwTotalPageFile
;
6981 *freeswap
= memst
.dwAvailPageFile
;
6989 /* Wrappers for winsock functions to map between our file descriptors
6990 and winsock's handles; also set h_errno for convenience.
6992 To allow Emacs to run on systems which don't have winsock support
6993 installed, we dynamically link to winsock on startup if present, and
6994 otherwise provide the minimum necessary functionality
6995 (eg. gethostname). */
6997 /* function pointers for relevant socket functions */
6998 int (PASCAL
*pfn_WSAStartup
) (WORD wVersionRequired
, LPWSADATA lpWSAData
);
6999 void (PASCAL
*pfn_WSASetLastError
) (int iError
);
7000 int (PASCAL
*pfn_WSAGetLastError
) (void);
7001 int (PASCAL
*pfn_WSAEventSelect
) (SOCKET s
, HANDLE hEventObject
, long lNetworkEvents
);
7002 HANDLE (PASCAL
*pfn_WSACreateEvent
) (void);
7003 int (PASCAL
*pfn_WSACloseEvent
) (HANDLE hEvent
);
7004 int (PASCAL
*pfn_socket
) (int af
, int type
, int protocol
);
7005 int (PASCAL
*pfn_bind
) (SOCKET s
, const struct sockaddr
*addr
, int namelen
);
7006 int (PASCAL
*pfn_connect
) (SOCKET s
, const struct sockaddr
*addr
, int namelen
);
7007 int (PASCAL
*pfn_ioctlsocket
) (SOCKET s
, long cmd
, u_long
*argp
);
7008 int (PASCAL
*pfn_recv
) (SOCKET s
, char * buf
, int len
, int flags
);
7009 int (PASCAL
*pfn_send
) (SOCKET s
, const char * buf
, int len
, int flags
);
7010 int (PASCAL
*pfn_closesocket
) (SOCKET s
);
7011 int (PASCAL
*pfn_shutdown
) (SOCKET s
, int how
);
7012 int (PASCAL
*pfn_WSACleanup
) (void);
7014 u_short (PASCAL
*pfn_htons
) (u_short hostshort
);
7015 u_short (PASCAL
*pfn_ntohs
) (u_short netshort
);
7016 unsigned long (PASCAL
*pfn_inet_addr
) (const char * cp
);
7017 int (PASCAL
*pfn_gethostname
) (char * name
, int namelen
);
7018 struct hostent
* (PASCAL
*pfn_gethostbyname
) (const char * name
);
7019 struct servent
* (PASCAL
*pfn_getservbyname
) (const char * name
, const char * proto
);
7020 int (PASCAL
*pfn_getpeername
) (SOCKET s
, struct sockaddr
*addr
, int * namelen
);
7021 int (PASCAL
*pfn_setsockopt
) (SOCKET s
, int level
, int optname
,
7022 const char * optval
, int optlen
);
7023 int (PASCAL
*pfn_listen
) (SOCKET s
, int backlog
);
7024 int (PASCAL
*pfn_getsockname
) (SOCKET s
, struct sockaddr
* name
,
7026 SOCKET (PASCAL
*pfn_accept
) (SOCKET s
, struct sockaddr
* addr
, int * addrlen
);
7027 int (PASCAL
*pfn_recvfrom
) (SOCKET s
, char * buf
, int len
, int flags
,
7028 struct sockaddr
* from
, int * fromlen
);
7029 int (PASCAL
*pfn_sendto
) (SOCKET s
, const char * buf
, int len
, int flags
,
7030 const struct sockaddr
* to
, int tolen
);
7032 /* SetHandleInformation is only needed to make sockets non-inheritable. */
7033 BOOL (WINAPI
*pfn_SetHandleInformation
) (HANDLE object
, DWORD mask
, DWORD flags
);
7034 #ifndef HANDLE_FLAG_INHERIT
7035 #define HANDLE_FLAG_INHERIT 1
7039 static int winsock_inuse
;
7044 if (winsock_lib
!= NULL
&& winsock_inuse
== 0)
7046 release_listen_threads ();
7047 /* Not sure what would cause WSAENETDOWN, or even if it can happen
7048 after WSAStartup returns successfully, but it seems reasonable
7049 to allow unloading winsock anyway in that case. */
7050 if (pfn_WSACleanup () == 0 ||
7051 pfn_WSAGetLastError () == WSAENETDOWN
)
7053 if (FreeLibrary (winsock_lib
))
7062 init_winsock (int load_now
)
7064 WSADATA winsockData
;
7066 if (winsock_lib
!= NULL
)
7069 pfn_SetHandleInformation
7070 = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"),
7071 "SetHandleInformation");
7073 winsock_lib
= LoadLibrary ("Ws2_32.dll");
7075 if (winsock_lib
!= NULL
)
7077 /* dynamically link to socket functions */
7079 #define LOAD_PROC(fn) \
7080 if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \
7083 LOAD_PROC (WSAStartup
);
7084 LOAD_PROC (WSASetLastError
);
7085 LOAD_PROC (WSAGetLastError
);
7086 LOAD_PROC (WSAEventSelect
);
7087 LOAD_PROC (WSACreateEvent
);
7088 LOAD_PROC (WSACloseEvent
);
7091 LOAD_PROC (connect
);
7092 LOAD_PROC (ioctlsocket
);
7095 LOAD_PROC (closesocket
);
7096 LOAD_PROC (shutdown
);
7099 LOAD_PROC (inet_addr
);
7100 LOAD_PROC (gethostname
);
7101 LOAD_PROC (gethostbyname
);
7102 LOAD_PROC (getservbyname
);
7103 LOAD_PROC (getpeername
);
7104 LOAD_PROC (WSACleanup
);
7105 LOAD_PROC (setsockopt
);
7107 LOAD_PROC (getsockname
);
7109 LOAD_PROC (recvfrom
);
7113 /* specify version 1.1 of winsock */
7114 if (pfn_WSAStartup (0x101, &winsockData
) == 0)
7116 if (winsockData
.wVersion
!= 0x101)
7121 /* Report that winsock exists and is usable, but leave
7122 socket functions disabled. I am assuming that calling
7123 WSAStartup does not require any network interaction,
7124 and in particular does not cause or require a dial-up
7125 connection to be established. */
7128 FreeLibrary (winsock_lib
);
7136 FreeLibrary (winsock_lib
);
7146 /* Function to map winsock error codes to errno codes for those errno
7147 code defined in errno.h (errno values not defined by errno.h are
7148 already in nt/inc/sys/socket.h). */
7155 if (winsock_lib
== NULL
)
7158 wsa_err
= pfn_WSAGetLastError ();
7162 case WSAEACCES
: errno
= EACCES
; break;
7163 case WSAEBADF
: errno
= EBADF
; break;
7164 case WSAEFAULT
: errno
= EFAULT
; break;
7165 case WSAEINTR
: errno
= EINTR
; break;
7166 case WSAEINVAL
: errno
= EINVAL
; break;
7167 case WSAEMFILE
: errno
= EMFILE
; break;
7168 case WSAENAMETOOLONG
: errno
= ENAMETOOLONG
; break;
7169 case WSAENOTEMPTY
: errno
= ENOTEMPTY
; break;
7170 default: errno
= wsa_err
; break;
7178 if (winsock_lib
!= NULL
)
7179 pfn_WSASetLastError (0);
7182 /* Extend strerror to handle the winsock-specific error codes. */
7186 } _wsa_errlist
[] = {
7187 {WSAEINTR
, "Interrupted function call"},
7188 {WSAEBADF
, "Bad file descriptor"},
7189 {WSAEACCES
, "Permission denied"},
7190 {WSAEFAULT
, "Bad address"},
7191 {WSAEINVAL
, "Invalid argument"},
7192 {WSAEMFILE
, "Too many open files"},
7194 {WSAEWOULDBLOCK
, "Resource temporarily unavailable"},
7195 {WSAEINPROGRESS
, "Operation now in progress"},
7196 {WSAEALREADY
, "Operation already in progress"},
7197 {WSAENOTSOCK
, "Socket operation on non-socket"},
7198 {WSAEDESTADDRREQ
, "Destination address required"},
7199 {WSAEMSGSIZE
, "Message too long"},
7200 {WSAEPROTOTYPE
, "Protocol wrong type for socket"},
7201 {WSAENOPROTOOPT
, "Bad protocol option"},
7202 {WSAEPROTONOSUPPORT
, "Protocol not supported"},
7203 {WSAESOCKTNOSUPPORT
, "Socket type not supported"},
7204 {WSAEOPNOTSUPP
, "Operation not supported"},
7205 {WSAEPFNOSUPPORT
, "Protocol family not supported"},
7206 {WSAEAFNOSUPPORT
, "Address family not supported by protocol family"},
7207 {WSAEADDRINUSE
, "Address already in use"},
7208 {WSAEADDRNOTAVAIL
, "Cannot assign requested address"},
7209 {WSAENETDOWN
, "Network is down"},
7210 {WSAENETUNREACH
, "Network is unreachable"},
7211 {WSAENETRESET
, "Network dropped connection on reset"},
7212 {WSAECONNABORTED
, "Software caused connection abort"},
7213 {WSAECONNRESET
, "Connection reset by peer"},
7214 {WSAENOBUFS
, "No buffer space available"},
7215 {WSAEISCONN
, "Socket is already connected"},
7216 {WSAENOTCONN
, "Socket is not connected"},
7217 {WSAESHUTDOWN
, "Cannot send after socket shutdown"},
7218 {WSAETOOMANYREFS
, "Too many references"}, /* not sure */
7219 {WSAETIMEDOUT
, "Connection timed out"},
7220 {WSAECONNREFUSED
, "Connection refused"},
7221 {WSAELOOP
, "Network loop"}, /* not sure */
7222 {WSAENAMETOOLONG
, "Name is too long"},
7223 {WSAEHOSTDOWN
, "Host is down"},
7224 {WSAEHOSTUNREACH
, "No route to host"},
7225 {WSAENOTEMPTY
, "Buffer not empty"}, /* not sure */
7226 {WSAEPROCLIM
, "Too many processes"},
7227 {WSAEUSERS
, "Too many users"}, /* not sure */
7228 {WSAEDQUOT
, "Double quote in host name"}, /* really not sure */
7229 {WSAESTALE
, "Data is stale"}, /* not sure */
7230 {WSAEREMOTE
, "Remote error"}, /* not sure */
7232 {WSASYSNOTREADY
, "Network subsystem is unavailable"},
7233 {WSAVERNOTSUPPORTED
, "WINSOCK.DLL version out of range"},
7234 {WSANOTINITIALISED
, "Winsock not initialized successfully"},
7235 {WSAEDISCON
, "Graceful shutdown in progress"},
7237 {WSAENOMORE
, "No more operations allowed"}, /* not sure */
7238 {WSAECANCELLED
, "Operation cancelled"}, /* not sure */
7239 {WSAEINVALIDPROCTABLE
, "Invalid procedure table from service provider"},
7240 {WSAEINVALIDPROVIDER
, "Invalid service provider version number"},
7241 {WSAEPROVIDERFAILEDINIT
, "Unable to initialize a service provider"},
7242 {WSASYSCALLFAILURE
, "System call failure"},
7243 {WSASERVICE_NOT_FOUND
, "Service not found"}, /* not sure */
7244 {WSATYPE_NOT_FOUND
, "Class type not found"},
7245 {WSA_E_NO_MORE
, "No more resources available"}, /* really not sure */
7246 {WSA_E_CANCELLED
, "Operation already cancelled"}, /* really not sure */
7247 {WSAEREFUSED
, "Operation refused"}, /* not sure */
7250 {WSAHOST_NOT_FOUND
, "Host not found"},
7251 {WSATRY_AGAIN
, "Authoritative host not found during name lookup"},
7252 {WSANO_RECOVERY
, "Non-recoverable error during name lookup"},
7253 {WSANO_DATA
, "Valid name, no data record of requested type"},
7259 sys_strerror (int error_no
)
7262 static char unknown_msg
[40];
7264 if (error_no
>= 0 && error_no
< sys_nerr
)
7265 return sys_errlist
[error_no
];
7267 for (i
= 0; _wsa_errlist
[i
].errnum
>= 0; i
++)
7268 if (_wsa_errlist
[i
].errnum
== error_no
)
7269 return _wsa_errlist
[i
].msg
;
7271 sprintf (unknown_msg
, "Unidentified error: %d", error_no
);
7275 /* [andrewi 3-May-96] I've had conflicting results using both methods,
7276 but I believe the method of keeping the socket handle separate (and
7277 insuring it is not inheritable) is the correct one. */
7279 #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd)
7281 static int socket_to_fd (SOCKET s
);
7284 sys_socket (int af
, int type
, int protocol
)
7288 if (winsock_lib
== NULL
)
7291 return INVALID_SOCKET
;
7296 /* call the real socket function */
7297 s
= pfn_socket (af
, type
, protocol
);
7299 if (s
!= INVALID_SOCKET
)
7300 return socket_to_fd (s
);
7306 /* Convert a SOCKET to a file descriptor. */
7308 socket_to_fd (SOCKET s
)
7313 /* Although under NT 3.5 _open_osfhandle will accept a socket
7314 handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT,
7315 that does not work under NT 3.1. However, we can get the same
7316 effect by using a backdoor function to replace an existing
7317 descriptor handle with the one we want. */
7319 /* allocate a file descriptor (with appropriate flags) */
7320 fd
= _open ("NUL:", _O_RDWR
);
7323 /* Make a non-inheritable copy of the socket handle. Note
7324 that it is possible that sockets aren't actually kernel
7325 handles, which appears to be the case on Windows 9x when
7326 the MS Proxy winsock client is installed. */
7328 /* Apparently there is a bug in NT 3.51 with some service
7329 packs, which prevents using DuplicateHandle to make a
7330 socket handle non-inheritable (causes WSACleanup to
7331 hang). The work-around is to use SetHandleInformation
7332 instead if it is available and implemented. */
7333 if (pfn_SetHandleInformation
)
7335 pfn_SetHandleInformation ((HANDLE
) s
, HANDLE_FLAG_INHERIT
, 0);
7339 HANDLE parent
= GetCurrentProcess ();
7340 HANDLE new_s
= INVALID_HANDLE_VALUE
;
7342 if (DuplicateHandle (parent
,
7348 DUPLICATE_SAME_ACCESS
))
7350 /* It is possible that DuplicateHandle succeeds even
7351 though the socket wasn't really a kernel handle,
7352 because a real handle has the same value. So
7353 test whether the new handle really is a socket. */
7354 long nonblocking
= 0;
7355 if (pfn_ioctlsocket ((SOCKET
) new_s
, FIONBIO
, &nonblocking
) == 0)
7357 pfn_closesocket (s
);
7362 CloseHandle (new_s
);
7367 eassert (fd
< MAXDESC
);
7368 fd_info
[fd
].hnd
= (HANDLE
) s
;
7370 /* set our own internal flags */
7371 fd_info
[fd
].flags
= FILE_SOCKET
| FILE_BINARY
| FILE_READ
| FILE_WRITE
;
7377 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
7379 /* attach child_process to fd_info */
7380 if (fd_info
[ fd
].cp
!= NULL
)
7382 DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd
));
7386 fd_info
[ fd
].cp
= cp
;
7389 winsock_inuse
++; /* count open sockets */
7397 pfn_closesocket (s
);
7403 sys_bind (int s
, const struct sockaddr
* addr
, int namelen
)
7405 if (winsock_lib
== NULL
)
7408 return SOCKET_ERROR
;
7412 if (fd_info
[s
].flags
& FILE_SOCKET
)
7414 int rc
= pfn_bind (SOCK_HANDLE (s
), addr
, namelen
);
7415 if (rc
== SOCKET_ERROR
)
7420 return SOCKET_ERROR
;
7424 sys_connect (int s
, const struct sockaddr
* name
, int namelen
)
7426 if (winsock_lib
== NULL
)
7429 return SOCKET_ERROR
;
7433 if (fd_info
[s
].flags
& FILE_SOCKET
)
7435 int rc
= pfn_connect (SOCK_HANDLE (s
), name
, namelen
);
7436 if (rc
== SOCKET_ERROR
)
7441 return SOCKET_ERROR
;
7445 sys_htons (u_short hostshort
)
7447 return (winsock_lib
!= NULL
) ?
7448 pfn_htons (hostshort
) : hostshort
;
7452 sys_ntohs (u_short netshort
)
7454 return (winsock_lib
!= NULL
) ?
7455 pfn_ntohs (netshort
) : netshort
;
7459 sys_inet_addr (const char * cp
)
7461 return (winsock_lib
!= NULL
) ?
7462 pfn_inet_addr (cp
) : INADDR_NONE
;
7466 sys_gethostname (char * name
, int namelen
)
7468 if (winsock_lib
!= NULL
)
7473 retval
= pfn_gethostname (name
, namelen
);
7474 if (retval
== SOCKET_ERROR
)
7479 if (namelen
> MAX_COMPUTERNAME_LENGTH
)
7480 return !GetComputerName (name
, (DWORD
*)&namelen
);
7483 return SOCKET_ERROR
;
7487 sys_gethostbyname (const char * name
)
7489 struct hostent
* host
;
7490 int h_err
= h_errno
;
7492 if (winsock_lib
== NULL
)
7494 h_errno
= NO_RECOVERY
;
7500 host
= pfn_gethostbyname (name
);
7512 sys_getservbyname (const char * name
, const char * proto
)
7514 struct servent
* serv
;
7516 if (winsock_lib
== NULL
)
7523 serv
= pfn_getservbyname (name
, proto
);
7530 sys_getpeername (int s
, struct sockaddr
*addr
, int * namelen
)
7532 if (winsock_lib
== NULL
)
7535 return SOCKET_ERROR
;
7539 if (fd_info
[s
].flags
& FILE_SOCKET
)
7541 int rc
= pfn_getpeername (SOCK_HANDLE (s
), addr
, namelen
);
7542 if (rc
== SOCKET_ERROR
)
7547 return SOCKET_ERROR
;
7551 sys_shutdown (int s
, int how
)
7553 if (winsock_lib
== NULL
)
7556 return SOCKET_ERROR
;
7560 if (fd_info
[s
].flags
& FILE_SOCKET
)
7562 int rc
= pfn_shutdown (SOCK_HANDLE (s
), how
);
7563 if (rc
== SOCKET_ERROR
)
7568 return SOCKET_ERROR
;
7572 sys_setsockopt (int s
, int level
, int optname
, const void * optval
, int optlen
)
7574 if (winsock_lib
== NULL
)
7577 return SOCKET_ERROR
;
7581 if (fd_info
[s
].flags
& FILE_SOCKET
)
7583 int rc
= pfn_setsockopt (SOCK_HANDLE (s
), level
, optname
,
7584 (const char *)optval
, optlen
);
7585 if (rc
== SOCKET_ERROR
)
7590 return SOCKET_ERROR
;
7594 sys_listen (int s
, int backlog
)
7596 if (winsock_lib
== NULL
)
7599 return SOCKET_ERROR
;
7603 if (fd_info
[s
].flags
& FILE_SOCKET
)
7605 int rc
= pfn_listen (SOCK_HANDLE (s
), backlog
);
7606 if (rc
== SOCKET_ERROR
)
7609 fd_info
[s
].flags
|= FILE_LISTEN
;
7613 return SOCKET_ERROR
;
7617 sys_getsockname (int s
, struct sockaddr
* name
, int * namelen
)
7619 if (winsock_lib
== NULL
)
7622 return SOCKET_ERROR
;
7626 if (fd_info
[s
].flags
& FILE_SOCKET
)
7628 int rc
= pfn_getsockname (SOCK_HANDLE (s
), name
, namelen
);
7629 if (rc
== SOCKET_ERROR
)
7634 return SOCKET_ERROR
;
7638 sys_accept (int s
, struct sockaddr
* addr
, int * addrlen
)
7640 if (winsock_lib
== NULL
)
7647 if (fd_info
[s
].flags
& FILE_LISTEN
)
7649 SOCKET t
= pfn_accept (SOCK_HANDLE (s
), addr
, addrlen
);
7651 if (t
== INVALID_SOCKET
)
7654 fd
= socket_to_fd (t
);
7658 fd_info
[s
].cp
->status
= STATUS_READ_ACKNOWLEDGED
;
7659 ResetEvent (fd_info
[s
].cp
->char_avail
);
7668 sys_recvfrom (int s
, char * buf
, int len
, int flags
,
7669 struct sockaddr
* from
, int * fromlen
)
7671 if (winsock_lib
== NULL
)
7674 return SOCKET_ERROR
;
7678 if (fd_info
[s
].flags
& FILE_SOCKET
)
7680 int rc
= pfn_recvfrom (SOCK_HANDLE (s
), buf
, len
, flags
, from
, fromlen
);
7681 if (rc
== SOCKET_ERROR
)
7686 return SOCKET_ERROR
;
7690 sys_sendto (int s
, const char * buf
, int len
, int flags
,
7691 const struct sockaddr
* to
, int tolen
)
7693 if (winsock_lib
== NULL
)
7696 return SOCKET_ERROR
;
7700 if (fd_info
[s
].flags
& FILE_SOCKET
)
7702 int rc
= pfn_sendto (SOCK_HANDLE (s
), buf
, len
, flags
, to
, tolen
);
7703 if (rc
== SOCKET_ERROR
)
7708 return SOCKET_ERROR
;
7711 /* Windows does not have an fcntl function. Provide an implementation
7712 good enough for Emacs. */
7714 fcntl (int s
, int cmd
, int options
)
7716 /* In the w32 Emacs port, fcntl (fd, F_DUPFD_CLOEXEC, fd1) is always
7717 invoked in a context where fd1 is closed and all descriptors less
7718 than fd1 are open, so sys_dup is an adequate implementation. */
7719 if (cmd
== F_DUPFD_CLOEXEC
)
7723 if (fd_info
[s
].flags
& FILE_SOCKET
)
7725 if (winsock_lib
== NULL
)
7731 if (cmd
== F_SETFL
&& options
== O_NONBLOCK
)
7733 unsigned long nblock
= 1;
7734 int rc
= pfn_ioctlsocket (SOCK_HANDLE (s
), FIONBIO
, &nblock
);
7735 if (rc
== SOCKET_ERROR
)
7737 /* Keep track of the fact that we set this to non-blocking. */
7738 fd_info
[s
].flags
|= FILE_NDELAY
;
7744 return SOCKET_ERROR
;
7747 else if ((fd_info
[s
].flags
& (FILE_PIPE
| FILE_WRITE
))
7748 == (FILE_PIPE
| FILE_WRITE
))
7750 /* Force our writes to pipes be non-blocking. */
7751 if (cmd
== F_SETFL
&& options
== O_NONBLOCK
)
7753 HANDLE h
= (HANDLE
)_get_osfhandle (s
);
7754 DWORD pipe_mode
= PIPE_NOWAIT
;
7756 if (!SetNamedPipeHandleState (h
, &pipe_mode
, NULL
, NULL
))
7758 DebPrint (("SetNamedPipeHandleState: %lu\n", GetLastError ()));
7759 return SOCKET_ERROR
;
7761 fd_info
[s
].flags
|= FILE_NDELAY
;
7767 return SOCKET_ERROR
;
7771 return SOCKET_ERROR
;
7775 /* Shadow main io functions: we need to handle pipes and sockets more
7789 if (fd
< MAXDESC
&& fd_info
[fd
].cp
)
7791 child_process
* cp
= fd_info
[fd
].cp
;
7793 fd_info
[fd
].cp
= NULL
;
7795 if (CHILD_ACTIVE (cp
))
7797 /* if last descriptor to active child_process then cleanup */
7799 for (i
= 0; i
< MAXDESC
; i
++)
7803 if (fd_info
[i
].cp
== cp
)
7808 if (fd_info
[fd
].flags
& FILE_SOCKET
)
7810 if (winsock_lib
== NULL
) emacs_abort ();
7812 pfn_shutdown (SOCK_HANDLE (fd
), 2);
7813 rc
= pfn_closesocket (SOCK_HANDLE (fd
));
7815 winsock_inuse
--; /* count open sockets */
7817 /* If the process handle is NULL, it's either a socket
7818 or serial connection, or a subprocess that was
7819 already reaped by reap_subprocess, but whose
7820 resources were not yet freed, because its output was
7821 not fully read yet by the time it was reaped. (This
7822 usually happens with async subprocesses whose output
7823 is being read by Emacs.) Otherwise, this process was
7824 not reaped yet, so we set its FD to a negative value
7825 to make sure sys_select will eventually get to
7826 calling the SIGCHLD handler for it, which will then
7827 invoke waitpid and reap_subprocess. */
7828 if (cp
->procinfo
.hProcess
== NULL
)
7836 if (fd
>= 0 && fd
< MAXDESC
)
7837 fd_info
[fd
].flags
= 0;
7839 /* Note that sockets do not need special treatment here (at least on
7840 NT and Windows 95 using the standard tcp/ip stacks) - it appears that
7841 closesocket is equivalent to CloseHandle, which is to be expected
7842 because socket handles are fully fledged kernel handles. */
7854 if (new_fd
>= 0 && new_fd
< MAXDESC
)
7856 /* duplicate our internal info as well */
7857 fd_info
[new_fd
] = fd_info
[fd
];
7863 sys_dup2 (int src
, int dst
)
7867 if (dst
< 0 || dst
>= MAXDESC
)
7873 /* make sure we close the destination first if it's a pipe or socket */
7874 if (src
!= dst
&& fd_info
[dst
].flags
!= 0)
7877 rc
= _dup2 (src
, dst
);
7880 /* duplicate our internal info as well */
7881 fd_info
[dst
] = fd_info
[src
];
7887 pipe2 (int * phandles
, int pipe2_flags
)
7892 eassert (pipe2_flags
== (O_BINARY
| O_CLOEXEC
));
7894 /* make pipe handles non-inheritable; when we spawn a child, we
7895 replace the relevant handle with an inheritable one. Also put
7896 pipes into binary mode; we will do text mode translation ourselves
7898 rc
= _pipe (phandles
, 0, _O_NOINHERIT
| _O_BINARY
);
7902 /* Protect against overflow, since Windows can open more handles than
7903 our fd_info array has room for. */
7904 if (phandles
[0] >= MAXDESC
|| phandles
[1] >= MAXDESC
)
7906 _close (phandles
[0]);
7907 _close (phandles
[1]);
7913 flags
= FILE_PIPE
| FILE_READ
| FILE_BINARY
;
7914 fd_info
[phandles
[0]].flags
= flags
;
7916 flags
= FILE_PIPE
| FILE_WRITE
| FILE_BINARY
;
7917 fd_info
[phandles
[1]].flags
= flags
;
7924 /* Function to do blocking read of one byte, needed to implement
7925 select. It is only allowed on communication ports, sockets, or
7928 _sys_read_ahead (int fd
)
7933 if (fd
< 0 || fd
>= MAXDESC
)
7934 return STATUS_READ_ERROR
;
7936 cp
= fd_info
[fd
].cp
;
7938 if (cp
== NULL
|| cp
->fd
!= fd
|| cp
->status
!= STATUS_READ_READY
)
7939 return STATUS_READ_ERROR
;
7941 if ((fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SERIAL
| FILE_SOCKET
)) == 0
7942 || (fd_info
[fd
].flags
& FILE_READ
) == 0)
7944 DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe, serial port, or socket!\n", fd
));
7948 cp
->status
= STATUS_READ_IN_PROGRESS
;
7950 if (fd_info
[fd
].flags
& FILE_PIPE
)
7952 rc
= _read (fd
, &cp
->chr
, sizeof (char));
7954 /* Give subprocess time to buffer some more output for us before
7955 reporting that input is available; we need this because Windows 95
7956 connects DOS programs to pipes by making the pipe appear to be
7957 the normal console stdout - as a result most DOS programs will
7958 write to stdout without buffering, ie. one character at a
7959 time. Even some W32 programs do this - "dir" in a command
7960 shell on NT is very slow if we don't do this. */
7963 int wait
= w32_pipe_read_delay
;
7969 /* Yield remainder of our time slice, effectively giving a
7970 temporary priority boost to the child process. */
7974 else if (fd_info
[fd
].flags
& FILE_SERIAL
)
7976 HANDLE hnd
= fd_info
[fd
].hnd
;
7977 OVERLAPPED
*ovl
= &fd_info
[fd
].cp
->ovl_read
;
7980 /* Configure timeouts for blocking read. */
7981 if (!GetCommTimeouts (hnd
, &ct
))
7983 cp
->status
= STATUS_READ_ERROR
;
7984 return STATUS_READ_ERROR
;
7986 ct
.ReadIntervalTimeout
= 0;
7987 ct
.ReadTotalTimeoutMultiplier
= 0;
7988 ct
.ReadTotalTimeoutConstant
= 0;
7989 if (!SetCommTimeouts (hnd
, &ct
))
7991 cp
->status
= STATUS_READ_ERROR
;
7992 return STATUS_READ_ERROR
;
7995 if (!ReadFile (hnd
, &cp
->chr
, sizeof (char), (DWORD
*) &rc
, ovl
))
7997 if (GetLastError () != ERROR_IO_PENDING
)
7999 cp
->status
= STATUS_READ_ERROR
;
8000 return STATUS_READ_ERROR
;
8002 if (!GetOverlappedResult (hnd
, ovl
, (DWORD
*) &rc
, TRUE
))
8004 cp
->status
= STATUS_READ_ERROR
;
8005 return STATUS_READ_ERROR
;
8009 else if (fd_info
[fd
].flags
& FILE_SOCKET
)
8011 unsigned long nblock
= 0;
8012 /* We always want this to block, so temporarily disable NDELAY. */
8013 if (fd_info
[fd
].flags
& FILE_NDELAY
)
8014 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
8016 rc
= pfn_recv (SOCK_HANDLE (fd
), &cp
->chr
, sizeof (char), 0);
8018 if (fd_info
[fd
].flags
& FILE_NDELAY
)
8021 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
8025 if (rc
== sizeof (char))
8026 cp
->status
= STATUS_READ_SUCCEEDED
;
8028 cp
->status
= STATUS_READ_FAILED
;
8034 _sys_wait_accept (int fd
)
8040 if (fd
< 0 || fd
>= MAXDESC
)
8041 return STATUS_READ_ERROR
;
8043 cp
= fd_info
[fd
].cp
;
8045 if (cp
== NULL
|| cp
->fd
!= fd
|| cp
->status
!= STATUS_READ_READY
)
8046 return STATUS_READ_ERROR
;
8048 cp
->status
= STATUS_READ_FAILED
;
8050 hEv
= pfn_WSACreateEvent ();
8051 rc
= pfn_WSAEventSelect (SOCK_HANDLE (fd
), hEv
, FD_ACCEPT
);
8052 if (rc
!= SOCKET_ERROR
)
8055 rc
= WaitForSingleObject (hEv
, 500);
8057 } while (rc
== WAIT_TIMEOUT
8058 && cp
->status
!= STATUS_READ_ERROR
8060 pfn_WSAEventSelect (SOCK_HANDLE (fd
), NULL
, 0);
8061 if (rc
== WAIT_OBJECT_0
)
8062 cp
->status
= STATUS_READ_SUCCEEDED
;
8064 pfn_WSACloseEvent (hEv
);
8070 sys_read (int fd
, char * buffer
, unsigned int count
)
8075 char * orig_buffer
= buffer
;
8083 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SOCKET
| FILE_SERIAL
))
8085 child_process
*cp
= fd_info
[fd
].cp
;
8087 if ((fd_info
[fd
].flags
& FILE_READ
) == 0)
8095 /* re-read CR carried over from last read */
8096 if (fd_info
[fd
].flags
& FILE_LAST_CR
)
8098 if (fd_info
[fd
].flags
& FILE_BINARY
) emacs_abort ();
8102 fd_info
[fd
].flags
&= ~FILE_LAST_CR
;
8105 /* presence of a child_process structure means we are operating in
8106 non-blocking mode - otherwise we just call _read directly.
8107 Note that the child_process structure might be missing because
8108 reap_subprocess has been called; in this case the pipe is
8109 already broken, so calling _read on it is okay. */
8112 int current_status
= cp
->status
;
8114 switch (current_status
)
8116 case STATUS_READ_FAILED
:
8117 case STATUS_READ_ERROR
:
8118 /* report normal EOF if nothing in buffer */
8120 fd_info
[fd
].flags
|= FILE_AT_EOF
;
8123 case STATUS_READ_READY
:
8124 case STATUS_READ_IN_PROGRESS
:
8125 DebPrint (("sys_read called when read is in progress\n"));
8126 errno
= EWOULDBLOCK
;
8129 case STATUS_READ_SUCCEEDED
:
8130 /* consume read-ahead char */
8131 *buffer
++ = cp
->chr
;
8134 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
8135 ResetEvent (cp
->char_avail
);
8137 case STATUS_READ_ACKNOWLEDGED
:
8141 DebPrint (("sys_read: bad status %d\n", current_status
));
8146 if (fd_info
[fd
].flags
& FILE_PIPE
)
8148 PeekNamedPipe ((HANDLE
) _get_osfhandle (fd
), NULL
, 0, NULL
, &waiting
, NULL
);
8149 to_read
= min (waiting
, (DWORD
) count
);
8152 nchars
+= _read (fd
, buffer
, to_read
);
8154 else if (fd_info
[fd
].flags
& FILE_SERIAL
)
8156 HANDLE hnd
= fd_info
[fd
].hnd
;
8157 OVERLAPPED
*ovl
= &fd_info
[fd
].cp
->ovl_read
;
8163 /* Configure timeouts for non-blocking read. */
8164 if (!GetCommTimeouts (hnd
, &ct
))
8169 ct
.ReadIntervalTimeout
= MAXDWORD
;
8170 ct
.ReadTotalTimeoutMultiplier
= 0;
8171 ct
.ReadTotalTimeoutConstant
= 0;
8172 if (!SetCommTimeouts (hnd
, &ct
))
8178 if (!ResetEvent (ovl
->hEvent
))
8183 if (!ReadFile (hnd
, buffer
, count
, (DWORD
*) &rc
, ovl
))
8185 if (GetLastError () != ERROR_IO_PENDING
)
8190 if (!GetOverlappedResult (hnd
, ovl
, (DWORD
*) &rc
, TRUE
))
8199 else /* FILE_SOCKET */
8201 if (winsock_lib
== NULL
) emacs_abort ();
8203 /* do the equivalent of a non-blocking read */
8204 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONREAD
, &waiting
);
8205 if (waiting
== 0 && nchars
== 0)
8207 errno
= EWOULDBLOCK
;
8213 /* always use binary mode for sockets */
8214 int res
= pfn_recv (SOCK_HANDLE (fd
), buffer
, count
, 0);
8215 if (res
== SOCKET_ERROR
)
8217 DebPrint (("sys_read.recv failed with error %d on socket %ld\n",
8218 pfn_WSAGetLastError (), SOCK_HANDLE (fd
)));
8228 int nread
= _read (fd
, buffer
, count
);
8231 else if (nchars
== 0)
8236 fd_info
[fd
].flags
|= FILE_AT_EOF
;
8237 /* Perform text mode translation if required. */
8238 else if ((fd_info
[fd
].flags
& FILE_BINARY
) == 0)
8240 nchars
= crlf_to_lf (nchars
, orig_buffer
);
8241 /* If buffer contains only CR, return that. To be absolutely
8242 sure we should attempt to read the next char, but in
8243 practice a CR to be followed by LF would not appear by
8244 itself in the buffer. */
8245 if (nchars
> 1 && orig_buffer
[nchars
- 1] == 0x0d)
8247 fd_info
[fd
].flags
|= FILE_LAST_CR
;
8253 nchars
= _read (fd
, buffer
, count
);
8258 /* From w32xfns.c */
8259 extern HANDLE interrupt_handle
;
8262 sys_write (int fd
, const void * buffer
, unsigned int count
)
8273 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SOCKET
| FILE_SERIAL
))
8275 if ((fd_info
[fd
].flags
& FILE_WRITE
) == 0)
8281 /* Perform text mode translation if required. */
8282 if ((fd_info
[fd
].flags
& FILE_BINARY
) == 0)
8285 const unsigned char * src
= buffer
;
8286 unsigned char * dst
;
8289 SAFE_NALLOCA (tmpbuf
, 2, count
);
8294 unsigned char *next
;
8295 /* Copy next line or remaining bytes. */
8296 next
= _memccpy (dst
, src
, '\n', nbytes
);
8299 /* Copied one line ending with '\n'. */
8300 int copied
= next
- dst
;
8303 /* Insert '\r' before '\n'. */
8310 /* Copied remaining partial line -> now finished. */
8317 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& FILE_SERIAL
)
8319 HANDLE hnd
= (HANDLE
) _get_osfhandle (fd
);
8320 OVERLAPPED
*ovl
= &fd_info
[fd
].cp
->ovl_write
;
8321 HANDLE wait_hnd
[2] = { interrupt_handle
, ovl
->hEvent
};
8324 /* This is async (a.k.a. "overlapped") I/O, so the return value
8325 of FALSE from WriteFile means either an error or the output
8326 will be completed asynchronously (ERROR_IO_PENDING). */
8327 if (!WriteFile (hnd
, buffer
, count
, (DWORD
*) &nchars
, ovl
))
8329 if (GetLastError () != ERROR_IO_PENDING
)
8336 /* Wait for the write to complete, and watch C-g while
8338 if (detect_input_pending ())
8339 active
= MsgWaitForMultipleObjects (2, wait_hnd
, FALSE
,
8340 INFINITE
, QS_ALLINPUT
);
8342 active
= WaitForMultipleObjects (2, wait_hnd
, FALSE
, INFINITE
);
8346 /* User pressed C-g, cancel write, then leave.
8347 Don't bother cleaning up as we may only get stuck
8348 in buggy drivers. */
8349 PurgeComm (hnd
, PURGE_TXABORT
| PURGE_TXCLEAR
);
8351 errno
= EIO
; /* Why not EINTR? */
8354 case WAIT_OBJECT_0
+ 1:
8355 if (!GetOverlappedResult (hnd
, ovl
, (DWORD
*) &nchars
, TRUE
))
8365 else if (fd
< MAXDESC
&& fd_info
[fd
].flags
& FILE_SOCKET
)
8367 unsigned long nblock
= 0;
8368 if (winsock_lib
== NULL
) emacs_abort ();
8370 /* TODO: implement select() properly so non-blocking I/O works. */
8371 /* For now, make sure the write blocks. */
8372 if (fd_info
[fd
].flags
& FILE_NDELAY
)
8373 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
8375 nchars
= pfn_send (SOCK_HANDLE (fd
), buffer
, count
, 0);
8377 /* Set the socket back to non-blocking if it was before,
8378 for other operations that support it. */
8379 if (fd_info
[fd
].flags
& FILE_NDELAY
)
8382 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
8385 if (nchars
== SOCKET_ERROR
)
8387 DebPrint (("sys_write.send failed with error %d on socket %ld\n",
8388 pfn_WSAGetLastError (), SOCK_HANDLE (fd
)));
8394 /* Some networked filesystems don't like too large writes, so
8395 break them into smaller chunks. See the Comments section of
8396 the MSDN documentation of WriteFile for details behind the
8397 choice of the value of CHUNK below. See also the thread
8398 http://thread.gmane.org/gmane.comp.version-control.git/145294
8399 in the git mailing list. */
8400 const unsigned char *p
= buffer
;
8401 const unsigned chunk
= 30 * 1024 * 1024;
8406 unsigned this_chunk
= count
< chunk
? count
: chunk
;
8407 int n
= _write (fd
, p
, this_chunk
);
8412 /* When there's no buffer space in a pipe that is in the
8413 non-blocking mode, _write returns ENOSPC. We return
8414 EAGAIN instead, which should trigger the logic in
8415 send_process that enters waiting loop and calls
8416 wait_reading_process_output to allow process input to
8417 be accepted during the wait. Those calls to
8418 wait_reading_process_output allow sys_select to
8419 notice when process input becomes available, thus
8420 avoiding deadlock whereby each side of the pipe is
8421 blocked on write, waiting for the other party to read
8422 its end of the pipe. */
8425 && ((fd_info
[fd
].flags
& (FILE_PIPE
| FILE_NDELAY
))
8426 == (FILE_PIPE
| FILE_NDELAY
)))
8431 else if (n
< this_chunk
)
8443 /* Emulation of SIOCGIFCONF and getifaddrs, see process.c. */
8445 extern Lisp_Object
conv_sockaddr_to_lisp (struct sockaddr
*, int);
8447 /* Return information about network interface IFNAME, or about all
8448 interfaces (if IFNAME is nil). */
8450 network_interface_get_info (Lisp_Object ifname
)
8452 ULONG ainfo_len
= sizeof (IP_ADAPTER_INFO
);
8453 IP_ADAPTER_INFO
*adapter
, *ainfo
= xmalloc (ainfo_len
);
8454 DWORD retval
= get_adapters_info (ainfo
, &ainfo_len
);
8455 Lisp_Object res
= Qnil
;
8457 if (retval
== ERROR_BUFFER_OVERFLOW
)
8459 ainfo
= xrealloc (ainfo
, ainfo_len
);
8460 retval
= get_adapters_info (ainfo
, &ainfo_len
);
8463 if (retval
== ERROR_SUCCESS
)
8465 int eth_count
= 0, tr_count
= 0, fddi_count
= 0, ppp_count
= 0;
8466 int sl_count
= 0, wlan_count
= 0, lo_count
= 0, ifx_count
= 0;
8468 struct sockaddr_in sa
;
8470 /* For the below, we need some winsock functions, so make sure
8471 the winsock DLL is loaded. If we cannot successfully load
8472 it, they will have no use of the information we provide,
8474 if (!winsock_lib
&& !init_winsock (1))
8477 for (adapter
= ainfo
; adapter
; adapter
= adapter
->Next
)
8479 char namebuf
[MAX_ADAPTER_NAME_LENGTH
+ 4];
8481 /* Present Unix-compatible interface names, instead of the
8482 Windows names, which are really GUIDs not readable by
8484 static const char *ifmt
[] = {
8485 "eth%d", "tr%d", "fddi%d", "ppp%d", "sl%d", "wlan%d",
8500 switch (adapter
->Type
)
8502 case MIB_IF_TYPE_ETHERNET
:
8503 /* Windows before Vista reports wireless adapters as
8504 Ethernet. Work around by looking at the Description
8506 if (strstr (adapter
->Description
, "Wireless "))
8509 if_num
= wlan_count
++;
8513 ifmt_idx
= ETHERNET
;
8514 if_num
= eth_count
++;
8517 case MIB_IF_TYPE_TOKENRING
:
8518 ifmt_idx
= TOKENRING
;
8519 if_num
= tr_count
++;
8521 case MIB_IF_TYPE_FDDI
:
8523 if_num
= fddi_count
++;
8525 case MIB_IF_TYPE_PPP
:
8527 if_num
= ppp_count
++;
8529 case MIB_IF_TYPE_SLIP
:
8531 if_num
= sl_count
++;
8533 case IF_TYPE_IEEE80211
:
8535 if_num
= wlan_count
++;
8537 case MIB_IF_TYPE_LOOPBACK
:
8540 ifmt_idx
= LOOPBACK
;
8541 if_num
= lo_count
++;
8547 ifmt_idx
= OTHER_IF
;
8548 if_num
= ifx_count
++;
8551 if (ifmt_idx
== NONE
)
8553 sprintf (namebuf
, ifmt
[ifmt_idx
], if_num
);
8555 sa
.sin_family
= AF_INET
;
8556 ip_addr
= sys_inet_addr (adapter
->IpAddressList
.IpAddress
.String
);
8557 if (ip_addr
== INADDR_NONE
)
8559 /* Bogus address, skip this interface. */
8562 sa
.sin_addr
.s_addr
= ip_addr
;
8565 res
= Fcons (Fcons (build_string (namebuf
),
8566 conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8567 sizeof (struct sockaddr
))),
8569 else if (strcmp (namebuf
, SSDATA (ifname
)) == 0)
8571 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
8572 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
8573 Lisp_Object flags
= Qnil
;
8577 /* Flags. We guess most of them by type, since the
8578 Windows flags are different and hard to get by. */
8579 flags
= Fcons (intern ("up"), flags
);
8580 if (ifmt_idx
== ETHERNET
|| ifmt_idx
== WLAN
)
8582 flags
= Fcons (intern ("broadcast"), flags
);
8583 flags
= Fcons (intern ("multicast"), flags
);
8585 flags
= Fcons (intern ("running"), flags
);
8586 if (ifmt_idx
== PPP
)
8588 flags
= Fcons (intern ("pointopoint"), flags
);
8589 flags
= Fcons (intern ("noarp"), flags
);
8591 if (adapter
->HaveWins
)
8592 flags
= Fcons (intern ("WINS"), flags
);
8593 if (adapter
->DhcpEnabled
)
8594 flags
= Fcons (intern ("dynamic"), flags
);
8596 res
= Fcons (flags
, res
);
8598 /* Hardware address and its family. */
8599 for (n
= 0; n
< adapter
->AddressLength
; n
++)
8600 p
->contents
[n
] = make_number ((int) adapter
->Address
[n
]);
8601 /* Windows does not support AF_LINK or AF_PACKET family
8602 of addresses. Use an arbitrary family number that is
8603 identical to what GNU/Linux returns. */
8604 res
= Fcons (Fcons (make_number (1), hwaddr
), res
);
8607 sa
.sin_family
= AF_INET
;
8608 net_mask
= sys_inet_addr (adapter
->IpAddressList
.IpMask
.String
);
8609 if (net_mask
!= INADDR_NONE
)
8611 sa
.sin_addr
.s_addr
= net_mask
;
8613 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8614 sizeof (struct sockaddr
)),
8618 res
= Fcons (Qnil
, res
);
8620 sa
.sin_family
= AF_INET
;
8621 if (ip_addr
!= INADDR_NONE
)
8623 /* Broadcast address is only reported by
8624 GetAdaptersAddresses, which is of limited
8625 availability. Generate it on our own. */
8626 u_long bcast_addr
= (ip_addr
& net_mask
) | ~net_mask
;
8628 sa
.sin_addr
.s_addr
= bcast_addr
;
8630 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8631 sizeof (struct sockaddr
)),
8635 sa
.sin_addr
.s_addr
= ip_addr
;
8637 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8638 sizeof (struct sockaddr
)),
8642 res
= Fcons (Qnil
, Fcons (Qnil
, res
));
8645 /* GetAdaptersInfo is documented to not report loopback
8646 interfaces, so we generate one out of thin air. */
8649 sa
.sin_family
= AF_INET
;
8653 sa
.sin_addr
.s_addr
= sys_inet_addr ("127.0.0.1");
8654 res
= Fcons (Fcons (build_string ("lo"),
8655 conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8656 sizeof (struct sockaddr
))),
8659 else if (strcmp (SSDATA (ifname
), "lo") == 0)
8661 res
= Fcons (Fcons (intern ("running"),
8662 Fcons (intern ("loopback"),
8663 Fcons (intern ("up"), Qnil
))), Qnil
);
8664 /* 772 is what 3 different GNU/Linux systems report for
8665 the loopback interface. */
8666 res
= Fcons (Fcons (make_number (772),
8667 Fmake_vector (make_number (6),
8670 sa
.sin_addr
.s_addr
= sys_inet_addr ("255.0.0.0");
8671 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8672 sizeof (struct sockaddr
)),
8674 sa
.sin_addr
.s_addr
= sys_inet_addr ("0.0.0.0");
8675 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8676 sizeof (struct sockaddr
)),
8678 sa
.sin_addr
.s_addr
= sys_inet_addr ("127.0.0.1");
8679 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8680 sizeof (struct sockaddr
)),
8693 network_interface_list (void)
8695 return network_interface_get_info (Qnil
);
8699 network_interface_info (Lisp_Object ifname
)
8701 CHECK_STRING (ifname
);
8702 return network_interface_get_info (ifname
);
8706 /* The Windows CRT functions are "optimized for speed", so they don't
8707 check for timezone and DST changes if they were last called less
8708 than 1 minute ago (see http://support.microsoft.com/kb/821231). So
8709 all Emacs features that repeatedly call time functions (e.g.,
8710 display-time) are in real danger of missing timezone and DST
8711 changes. Calling tzset before each localtime call fixes that. */
8713 sys_localtime (const time_t *t
)
8716 return localtime (t
);
8721 /* Try loading LIBRARY_ID from the file(s) specified in
8722 Vdynamic_library_alist. If the library is loaded successfully,
8723 return the handle of the DLL, and record the filename in the
8724 property :loaded-from of LIBRARY_ID. If the library could not be
8725 found, or when it was already loaded (because the handle is not
8726 recorded anywhere, and so is lost after use), return NULL.
8728 We could also save the handle in :loaded-from, but currently
8729 there's no use case for it. */
8731 w32_delayed_load (Lisp_Object library_id
)
8733 HMODULE dll_handle
= NULL
;
8735 CHECK_SYMBOL (library_id
);
8737 if (CONSP (Vdynamic_library_alist
)
8738 && NILP (Fassq (library_id
, Vlibrary_cache
)))
8740 Lisp_Object found
= Qnil
;
8741 Lisp_Object dlls
= Fassq (library_id
, Vdynamic_library_alist
);
8744 for (dlls
= XCDR (dlls
); CONSP (dlls
); dlls
= XCDR (dlls
))
8746 Lisp_Object dll
= XCAR (dlls
);
8747 char name
[MAX_UTF8_PATH
];
8751 dll
= ENCODE_FILE (dll
);
8752 if (w32_unicode_filenames
)
8754 wchar_t name_w
[MAX_PATH
];
8756 filename_to_utf16 (SSDATA (dll
), name_w
);
8757 dll_handle
= LoadLibraryW (name_w
);
8760 res
= GetModuleFileNameW (dll_handle
, name_w
,
8763 filename_from_utf16 (name_w
, name
);
8768 char name_a
[MAX_PATH
];
8770 filename_to_ansi (SSDATA (dll
), name_a
);
8771 dll_handle
= LoadLibraryA (name_a
);
8774 res
= GetModuleFileNameA (dll_handle
, name_a
,
8777 filename_from_ansi (name_a
, name
);
8782 ptrdiff_t len
= strlen (name
);
8785 /* Possibly truncated */
8786 ? make_specified_string (name
, -1, len
, 1)
8788 /* This prevents thread start and end notifications
8789 from being sent to the DLL, for every thread we
8790 start. We don't need those notifications because
8791 threads we create never use any of these DLLs, only
8792 the main thread uses them. This is supposed to
8793 speed up thread creation. */
8794 DisableThreadLibraryCalls (dll_handle
);
8799 Fput (library_id
, QCloaded_from
, found
);
8807 check_windows_init_file (void)
8809 /* A common indication that Emacs is not installed properly is when
8810 it cannot find the Windows installation file. If this file does
8811 not exist in the expected place, tell the user. */
8813 if (!noninteractive
&& !inhibit_window_system
8814 /* Vload_path is not yet initialized when we are loading
8816 && NILP (Vpurify_flag
))
8818 Lisp_Object init_file
;
8821 /* Implementation note: this function runs early during Emacs
8822 startup, before startup.el is run. So Vload_path is still in
8823 its initial unibyte form, but it holds UTF-8 encoded file
8824 names, since init_callproc was already called. So we do not
8825 need to ENCODE_FILE here, but we do need to convert the file
8826 names from UTF-8 to ANSI. */
8827 init_file
= build_string ("term/w32-win");
8828 fd
= openp (Vload_path
, init_file
, Fget_load_suffixes (), NULL
, Qnil
, 0);
8831 Lisp_Object load_path_print
= Fprin1_to_string (Vload_path
, Qnil
);
8832 char *init_file_name
= SDATA (init_file
);
8833 char *load_path
= SDATA (load_path_print
);
8834 char *buffer
= alloca (1024
8835 + strlen (init_file_name
)
8836 + strlen (load_path
));
8841 "The Emacs Windows initialization file \"%s.el\" "
8842 "could not be found in your Emacs installation. "
8843 "Emacs checked the following directories for this file:\n"
8845 "When Emacs cannot find this file, it usually means that it "
8846 "was not installed properly, or its distribution file was "
8847 "not unpacked properly.\nSee the README.W32 file in the "
8848 "top-level Emacs directory for more information.",
8849 init_file_name
, load_path
);
8850 needed
= pMultiByteToWideChar (CP_UTF8
, MB_ERR_INVALID_CHARS
, buffer
,
8854 wchar_t *msg_w
= alloca ((needed
+ 1) * sizeof (wchar_t));
8856 pMultiByteToWideChar (CP_UTF8
, MB_ERR_INVALID_CHARS
, buffer
, -1,
8858 needed
= pWideCharToMultiByte (CP_ACP
, 0, msg_w
, -1,
8859 NULL
, 0, NULL
, NULL
);
8862 char *msg_a
= alloca (needed
+ 1);
8864 pWideCharToMultiByte (CP_ACP
, 0, msg_w
, -1, msg_a
, needed
,
8871 "Emacs Abort Dialog",
8872 MB_OK
| MB_ICONEXCLAMATION
| MB_TASKMODAL
);
8873 /* Use the low-level system abort. */
8884 term_ntproc (int ignored
)
8890 /* shutdown the socket interface if necessary */
8897 init_ntproc (int dumping
)
8899 sigset_t initial_mask
= 0;
8901 /* Initialize the socket interface now if available and requested by
8902 the user by defining PRELOAD_WINSOCK; otherwise loading will be
8903 delayed until open-network-stream is called (w32-has-winsock can
8904 also be used to dynamically load or reload winsock).
8906 Conveniently, init_environment is called before us, so
8907 PRELOAD_WINSOCK can be set in the registry. */
8909 /* Always initialize this correctly. */
8912 if (getenv ("PRELOAD_WINSOCK") != NULL
)
8913 init_winsock (TRUE
);
8915 /* Initial preparation for subprocess support: replace our standard
8916 handles with non-inheritable versions. */
8919 HANDLE stdin_save
= INVALID_HANDLE_VALUE
;
8920 HANDLE stdout_save
= INVALID_HANDLE_VALUE
;
8921 HANDLE stderr_save
= INVALID_HANDLE_VALUE
;
8923 parent
= GetCurrentProcess ();
8925 /* ignore errors when duplicating and closing; typically the
8926 handles will be invalid when running as a gui program. */
8927 DuplicateHandle (parent
,
8928 GetStdHandle (STD_INPUT_HANDLE
),
8933 DUPLICATE_SAME_ACCESS
);
8935 DuplicateHandle (parent
,
8936 GetStdHandle (STD_OUTPUT_HANDLE
),
8941 DUPLICATE_SAME_ACCESS
);
8943 DuplicateHandle (parent
,
8944 GetStdHandle (STD_ERROR_HANDLE
),
8949 DUPLICATE_SAME_ACCESS
);
8955 if (stdin_save
!= INVALID_HANDLE_VALUE
)
8956 _open_osfhandle ((intptr_t) stdin_save
, O_TEXT
);
8958 _open ("nul", O_TEXT
| O_NOINHERIT
| O_RDONLY
);
8961 if (stdout_save
!= INVALID_HANDLE_VALUE
)
8962 _open_osfhandle ((intptr_t) stdout_save
, O_TEXT
);
8964 _open ("nul", O_TEXT
| O_NOINHERIT
| O_WRONLY
);
8967 if (stderr_save
!= INVALID_HANDLE_VALUE
)
8968 _open_osfhandle ((intptr_t) stderr_save
, O_TEXT
);
8970 _open ("nul", O_TEXT
| O_NOINHERIT
| O_WRONLY
);
8974 /* unfortunately, atexit depends on implementation of malloc */
8975 /* atexit (term_ntproc); */
8978 /* Make sure we start with all signals unblocked. */
8979 sigprocmask (SIG_SETMASK
, &initial_mask
, NULL
);
8980 signal (SIGABRT
, term_ntproc
);
8984 /* determine which drives are fixed, for GetCachedVolumeInformation */
8986 /* GetDriveType must have trailing backslash. */
8987 char drive
[] = "A:\\";
8989 /* Loop over all possible drive letters */
8990 while (*drive
<= 'Z')
8992 /* Record if this drive letter refers to a fixed drive. */
8993 fixed_drives
[DRIVE_INDEX (*drive
)] =
8994 (GetDriveType (drive
) == DRIVE_FIXED
);
8999 /* Reset the volume info cache. */
9000 volume_cache
= NULL
;
9005 shutdown_handler ensures that buffers' autosave files are
9006 up to date when the user logs off, or the system shuts down.
9009 shutdown_handler (DWORD type
)
9011 /* Ctrl-C and Ctrl-Break are already suppressed, so don't handle them. */
9012 if (type
== CTRL_CLOSE_EVENT
/* User closes console window. */
9013 || type
== CTRL_LOGOFF_EVENT
/* User logs off. */
9014 || type
== CTRL_SHUTDOWN_EVENT
) /* User shutsdown. */
9016 /* Shut down cleanly, making sure autosave files are up to date. */
9017 shut_down_emacs (0, Qnil
);
9020 /* Allow other handlers to handle this signal. */
9024 /* On Windows 9X, load UNICOWS.DLL and return its handle, or die. On
9025 NT, return a handle to GDI32.DLL. */
9027 maybe_load_unicows_dll (void)
9029 if (os_subtype
== OS_9X
)
9031 HANDLE ret
= LoadLibrary ("Unicows.dll");
9034 /* These two functions are present on Windows 9X as stubs
9035 that always fail. We need the real implementations from
9036 UNICOWS.DLL, so we must call these functions through
9037 pointers, and assign the correct addresses to these
9038 pointers at program startup (see emacs.c, which calls
9039 this function early on). */
9040 pMultiByteToWideChar
= GetProcAddress (ret
, "MultiByteToWideChar");
9041 pWideCharToMultiByte
= GetProcAddress (ret
, "WideCharToMultiByte");
9048 button
= MessageBox (NULL
,
9049 "Emacs cannot load the UNICOWS.DLL library.\n"
9050 "This library is essential for using Emacs\n"
9051 "on this system. You need to install it.\n\n"
9052 "Emacs will exit when you click OK.",
9053 "Emacs cannot load UNICOWS.DLL",
9054 MB_ICONERROR
| MB_TASKMODAL
9055 | MB_SETFOREGROUND
| MB_OK
);
9066 /* On NT family of Windows, these two functions are always
9067 linked in, so we just assign their addresses to the 2
9068 pointers; no need for the LoadLibrary dance. */
9069 pMultiByteToWideChar
= MultiByteToWideChar
;
9070 pWideCharToMultiByte
= WideCharToMultiByte
;
9071 return LoadLibrary ("Gdi32.dll");
9076 globals_of_w32 is used to initialize those global variables that
9077 must always be initialized on startup even when the global variable
9078 initialized is non zero (see the function main in emacs.c).
9081 globals_of_w32 (void)
9083 HMODULE kernel32
= GetModuleHandle ("kernel32.dll");
9085 get_process_times_fn
= (GetProcessTimes_Proc
)
9086 GetProcAddress (kernel32
, "GetProcessTimes");
9088 DEFSYM (QCloaded_from
, ":loaded-from");
9090 g_b_init_is_windows_9x
= 0;
9091 g_b_init_open_process_token
= 0;
9092 g_b_init_get_token_information
= 0;
9093 g_b_init_lookup_account_sid
= 0;
9094 g_b_init_get_sid_sub_authority
= 0;
9095 g_b_init_get_sid_sub_authority_count
= 0;
9096 g_b_init_get_security_info
= 0;
9097 g_b_init_get_file_security_w
= 0;
9098 g_b_init_get_file_security_a
= 0;
9099 g_b_init_get_security_descriptor_owner
= 0;
9100 g_b_init_get_security_descriptor_group
= 0;
9101 g_b_init_is_valid_sid
= 0;
9102 g_b_init_create_toolhelp32_snapshot
= 0;
9103 g_b_init_process32_first
= 0;
9104 g_b_init_process32_next
= 0;
9105 g_b_init_open_thread_token
= 0;
9106 g_b_init_impersonate_self
= 0;
9107 g_b_init_revert_to_self
= 0;
9108 g_b_init_get_process_memory_info
= 0;
9109 g_b_init_get_process_working_set_size
= 0;
9110 g_b_init_global_memory_status
= 0;
9111 g_b_init_global_memory_status_ex
= 0;
9112 g_b_init_equal_sid
= 0;
9113 g_b_init_copy_sid
= 0;
9114 g_b_init_get_length_sid
= 0;
9115 g_b_init_get_native_system_info
= 0;
9116 g_b_init_get_system_times
= 0;
9117 g_b_init_create_symbolic_link_w
= 0;
9118 g_b_init_create_symbolic_link_a
= 0;
9119 g_b_init_get_security_descriptor_dacl
= 0;
9120 g_b_init_convert_sd_to_sddl
= 0;
9121 g_b_init_convert_sddl_to_sd
= 0;
9122 g_b_init_is_valid_security_descriptor
= 0;
9123 g_b_init_set_file_security_w
= 0;
9124 g_b_init_set_file_security_a
= 0;
9125 g_b_init_set_named_security_info_w
= 0;
9126 g_b_init_set_named_security_info_a
= 0;
9127 g_b_init_get_adapters_info
= 0;
9128 g_b_init_compare_string_w
= 0;
9129 num_of_processors
= 0;
9130 /* The following sets a handler for shutdown notifications for
9131 console apps. This actually applies to Emacs in both console and
9132 GUI modes, since we had to fool windows into thinking emacs is a
9133 console application to get console mode to work. */
9134 SetConsoleCtrlHandler (shutdown_handler
, TRUE
);
9136 /* "None" is the default group name on standalone workstations. */
9137 strcpy (dflt_group_name
, "None");
9139 /* Reset, in case it has some value inherited from dump time. */
9140 w32_stat_get_owner_group
= 0;
9142 /* If w32_unicode_filenames is non-zero, we will be using Unicode
9143 (a.k.a. "wide") APIs to invoke functions that accept file
9145 if (is_windows_9x ())
9146 w32_unicode_filenames
= 0;
9148 w32_unicode_filenames
= 1;
9151 /* For make-serial-process */
9153 serial_open (Lisp_Object port_obj
)
9155 char *port
= SSDATA (port_obj
);
9160 hnd
= CreateFile (port
, GENERIC_READ
| GENERIC_WRITE
, 0, 0,
9161 OPEN_EXISTING
, FILE_FLAG_OVERLAPPED
, 0);
9162 if (hnd
== INVALID_HANDLE_VALUE
)
9163 error ("Could not open %s", port
);
9164 fd
= (int) _open_osfhandle ((intptr_t) hnd
, 0);
9166 error ("Could not open %s", port
);
9170 error ("Could not create child process");
9172 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
9173 fd_info
[ fd
].hnd
= hnd
;
9174 fd_info
[ fd
].flags
|=
9175 FILE_READ
| FILE_WRITE
| FILE_BINARY
| FILE_SERIAL
;
9176 if (fd_info
[ fd
].cp
!= NULL
)
9178 error ("fd_info[fd = %d] is already in use", fd
);
9180 fd_info
[ fd
].cp
= cp
;
9181 cp
->ovl_read
.hEvent
= CreateEvent (NULL
, TRUE
, FALSE
, NULL
);
9182 if (cp
->ovl_read
.hEvent
== NULL
)
9183 error ("Could not create read event");
9184 cp
->ovl_write
.hEvent
= CreateEvent (NULL
, TRUE
, FALSE
, NULL
);
9185 if (cp
->ovl_write
.hEvent
== NULL
)
9186 error ("Could not create write event");
9191 /* For serial-process-configure */
9193 serial_configure (struct Lisp_Process
*p
, Lisp_Object contact
)
9195 Lisp_Object childp2
= Qnil
;
9196 Lisp_Object tem
= Qnil
;
9200 char summary
[4] = "???"; /* This usually becomes "8N1". */
9202 if ((fd_info
[ p
->outfd
].flags
& FILE_SERIAL
) == 0)
9203 error ("Not a serial process");
9204 hnd
= fd_info
[ p
->outfd
].hnd
;
9206 childp2
= Fcopy_sequence (p
->childp
);
9208 /* Initialize timeouts for blocking read and blocking write. */
9209 if (!GetCommTimeouts (hnd
, &ct
))
9210 error ("GetCommTimeouts() failed");
9211 ct
.ReadIntervalTimeout
= 0;
9212 ct
.ReadTotalTimeoutMultiplier
= 0;
9213 ct
.ReadTotalTimeoutConstant
= 0;
9214 ct
.WriteTotalTimeoutMultiplier
= 0;
9215 ct
.WriteTotalTimeoutConstant
= 0;
9216 if (!SetCommTimeouts (hnd
, &ct
))
9217 error ("SetCommTimeouts() failed");
9218 /* Read port attributes and prepare default configuration. */
9219 memset (&dcb
, 0, sizeof (dcb
));
9220 dcb
.DCBlength
= sizeof (DCB
);
9221 if (!GetCommState (hnd
, &dcb
))
9222 error ("GetCommState() failed");
9225 dcb
.fAbortOnError
= FALSE
;
9226 /* dcb.XonLim and dcb.XoffLim are set by GetCommState() */
9231 /* Configure speed. */
9232 if (!NILP (Fplist_member (contact
, QCspeed
)))
9233 tem
= Fplist_get (contact
, QCspeed
);
9235 tem
= Fplist_get (p
->childp
, QCspeed
);
9237 dcb
.BaudRate
= XINT (tem
);
9238 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
9240 /* Configure bytesize. */
9241 if (!NILP (Fplist_member (contact
, QCbytesize
)))
9242 tem
= Fplist_get (contact
, QCbytesize
);
9244 tem
= Fplist_get (p
->childp
, QCbytesize
);
9246 tem
= make_number (8);
9248 if (XINT (tem
) != 7 && XINT (tem
) != 8)
9249 error (":bytesize must be nil (8), 7, or 8");
9250 dcb
.ByteSize
= XINT (tem
);
9251 summary
[0] = XINT (tem
) + '0';
9252 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
9254 /* Configure parity. */
9255 if (!NILP (Fplist_member (contact
, QCparity
)))
9256 tem
= Fplist_get (contact
, QCparity
);
9258 tem
= Fplist_get (p
->childp
, QCparity
);
9259 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
9260 error (":parity must be nil (no parity), `even', or `odd'");
9261 dcb
.fParity
= FALSE
;
9262 dcb
.Parity
= NOPARITY
;
9263 dcb
.fErrorChar
= FALSE
;
9268 else if (EQ (tem
, Qeven
))
9272 dcb
.Parity
= EVENPARITY
;
9273 dcb
.fErrorChar
= TRUE
;
9275 else if (EQ (tem
, Qodd
))
9279 dcb
.Parity
= ODDPARITY
;
9280 dcb
.fErrorChar
= TRUE
;
9282 childp2
= Fplist_put (childp2
, QCparity
, tem
);
9284 /* Configure stopbits. */
9285 if (!NILP (Fplist_member (contact
, QCstopbits
)))
9286 tem
= Fplist_get (contact
, QCstopbits
);
9288 tem
= Fplist_get (p
->childp
, QCstopbits
);
9290 tem
= make_number (1);
9292 if (XINT (tem
) != 1 && XINT (tem
) != 2)
9293 error (":stopbits must be nil (1 stopbit), 1, or 2");
9294 summary
[2] = XINT (tem
) + '0';
9295 if (XINT (tem
) == 1)
9296 dcb
.StopBits
= ONESTOPBIT
;
9297 else if (XINT (tem
) == 2)
9298 dcb
.StopBits
= TWOSTOPBITS
;
9299 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
9301 /* Configure flowcontrol. */
9302 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
9303 tem
= Fplist_get (contact
, QCflowcontrol
);
9305 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
9306 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
9307 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
9308 dcb
.fOutxCtsFlow
= FALSE
;
9309 dcb
.fOutxDsrFlow
= FALSE
;
9310 dcb
.fDtrControl
= DTR_CONTROL_DISABLE
;
9311 dcb
.fDsrSensitivity
= FALSE
;
9312 dcb
.fTXContinueOnXoff
= FALSE
;
9315 dcb
.fRtsControl
= RTS_CONTROL_DISABLE
;
9316 dcb
.XonChar
= 17; /* Control-Q */
9317 dcb
.XoffChar
= 19; /* Control-S */
9320 /* Already configured. */
9322 else if (EQ (tem
, Qhw
))
9324 dcb
.fRtsControl
= RTS_CONTROL_HANDSHAKE
;
9325 dcb
.fOutxCtsFlow
= TRUE
;
9327 else if (EQ (tem
, Qsw
))
9332 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
9334 /* Activate configuration. */
9335 if (!SetCommState (hnd
, &dcb
))
9336 error ("SetCommState() failed");
9338 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
9339 pset_childp (p
, childp2
);
9345 emacs_gnutls_pull (gnutls_transport_ptr_t p
, void* buf
, size_t sz
)
9348 struct Lisp_Process
*process
= (struct Lisp_Process
*)p
;
9349 int fd
= process
->infd
;
9351 n
= sys_read (fd
, (char*)buf
, sz
);
9358 /* Translate the WSAEWOULDBLOCK alias EWOULDBLOCK to EAGAIN. */
9359 if (err
== EWOULDBLOCK
)
9362 emacs_gnutls_transport_set_errno (process
->gnutls_state
, err
);
9368 emacs_gnutls_push (gnutls_transport_ptr_t p
, const void* buf
, size_t sz
)
9370 struct Lisp_Process
*process
= (struct Lisp_Process
*)p
;
9371 int fd
= process
->outfd
;
9372 ssize_t n
= sys_write (fd
, buf
, sz
);
9374 /* 0 or more bytes written means everything went fine. */
9378 /* Negative bytes written means we got an error in errno.
9379 Translate the WSAEWOULDBLOCK alias EWOULDBLOCK to EAGAIN. */
9380 emacs_gnutls_transport_set_errno (process
->gnutls_state
,
9381 errno
== EWOULDBLOCK
? EAGAIN
: errno
);
9385 #endif /* HAVE_GNUTLS */