1 /* Utility and Unix shadow routines for GNU Emacs on the Microsoft Windows API.
3 Copyright (C) 1994-1995, 2000-2015 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
21 Geoff Voelker (voelker@cs.washington.edu) 7-29-94
24 #include <mingw_time.h>
25 #include <stddef.h> /* for offsetof */
28 #include <float.h> /* for DBL_EPSILON */
35 #include <time.h> /* must be before nt/inc/sys/time.h, for MinGW64 */
37 #include <sys/utime.h>
40 /* must include CRT headers *before* config.h */
43 #include <mbstring.h> /* for _mbspbrk, _mbslwr, _mbsrchr, ... */
70 #include "epaths.h" /* for SHELL */
75 /* MinGW64 defines these in its _mingw.h. */
76 #ifndef _ANONYMOUS_UNION
77 # define _ANONYMOUS_UNION
79 #ifndef _ANONYMOUS_STRUCT
80 # define _ANONYMOUS_STRUCT
83 /* Some versions of compiler define MEMORYSTATUSEX, some don't, so we
84 use a different name to avoid compilation problems. */
85 typedef struct _MEMORY_STATUS_EX
{
88 DWORDLONG ullTotalPhys
;
89 DWORDLONG ullAvailPhys
;
90 DWORDLONG ullTotalPageFile
;
91 DWORDLONG ullAvailPageFile
;
92 DWORDLONG ullTotalVirtual
;
93 DWORDLONG ullAvailVirtual
;
94 DWORDLONG ullAvailExtendedVirtual
;
95 } MEMORY_STATUS_EX
,*LPMEMORY_STATUS_EX
;
97 /* These are here so that GDB would know about these data types. This
98 allows to attach GDB to Emacs when a fatal exception is triggered
99 and Windows pops up the "application needs to be closed" dialog.
100 At that point, _gnu_exception_handler, the top-level exception
101 handler installed by the MinGW startup code, is somewhere on the
102 call-stack of the main thread, so going to that call frame and
103 looking at the argument to _gnu_exception_handler, which is a
104 PEXCEPTION_POINTERS pointer, can reveal the exception code
105 (excptr->ExceptionRecord->ExceptionCode) and the address where the
106 exception happened (excptr->ExceptionRecord->ExceptionAddress), as
107 well as some additional information specific to the exception. */
108 PEXCEPTION_POINTERS excptr
;
109 PEXCEPTION_RECORD excprec
;
115 #include <tlhelp32.h>
120 #if _WIN32_WINNT < 0x0500
121 #if !defined (__MINGW32__) || __W32API_MAJOR_VERSION < 3 || (__W32API_MAJOR_VERSION == 3 && __W32API_MINOR_VERSION < 15)
122 /* This either is not in psapi.h or guarded by higher value of
123 _WIN32_WINNT than what we use. w32api supplied with MinGW 3.15
124 defines it in psapi.h */
125 typedef struct _PROCESS_MEMORY_COUNTERS_EX
{
127 DWORD PageFaultCount
;
128 SIZE_T PeakWorkingSetSize
;
129 SIZE_T WorkingSetSize
;
130 SIZE_T QuotaPeakPagedPoolUsage
;
131 SIZE_T QuotaPagedPoolUsage
;
132 SIZE_T QuotaPeakNonPagedPoolUsage
;
133 SIZE_T QuotaNonPagedPoolUsage
;
134 SIZE_T PagefileUsage
;
135 SIZE_T PeakPagefileUsage
;
137 } PROCESS_MEMORY_COUNTERS_EX
,*PPROCESS_MEMORY_COUNTERS_EX
;
141 #include <winioctl.h>
148 /* This is not in MinGW's sddl.h (but they are in MSVC headers), so we
149 define them by hand if not already defined. */
150 #ifndef SDDL_REVISION_1
151 #define SDDL_REVISION_1 1
152 #endif /* SDDL_REVISION_1 */
154 #if defined(_MSC_VER) || defined(MINGW_W64)
155 /* MSVC and MinGW64 don't provide the definition of
156 REPARSE_DATA_BUFFER and the associated macros, except on ntifs.h,
157 which cannot be included because it triggers conflicts with other
158 Windows API headers. So we define it here by hand. */
160 typedef struct _REPARSE_DATA_BUFFER
{
162 USHORT ReparseDataLength
;
166 USHORT SubstituteNameOffset
;
167 USHORT SubstituteNameLength
;
168 USHORT PrintNameOffset
;
169 USHORT PrintNameLength
;
172 } SymbolicLinkReparseBuffer
;
174 USHORT SubstituteNameOffset
;
175 USHORT SubstituteNameLength
;
176 USHORT PrintNameOffset
;
177 USHORT PrintNameLength
;
179 } MountPointReparseBuffer
;
182 } GenericReparseBuffer
;
184 } REPARSE_DATA_BUFFER
, *PREPARSE_DATA_BUFFER
;
186 #ifndef FILE_DEVICE_FILE_SYSTEM
187 #define FILE_DEVICE_FILE_SYSTEM 9
189 #ifndef METHOD_BUFFERED
190 #define METHOD_BUFFERED 0
192 #ifndef FILE_ANY_ACCESS
193 #define FILE_ANY_ACCESS 0x00000000
196 #define CTL_CODE(t,f,m,a) (((t)<<16)|((a)<<14)|((f)<<2)|(m))
198 /* MinGW64 defines FSCTL_GET_REPARSE_POINT on winioctl.h. */
199 #ifndef FSCTL_GET_REPARSE_POINT
200 #define FSCTL_GET_REPARSE_POINT \
201 CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 42, METHOD_BUFFERED, FILE_ANY_ACCESS)
205 /* TCP connection support. */
206 #include <sys/socket.h>
225 #include <iphlpapi.h> /* should be after winsock2.h */
229 #include "w32common.h"
231 #include "w32select.h"
233 #include "dispextern.h" /* for xstrcasecmp */
234 #include "coding.h" /* for Vlocale_coding_system */
236 #include "careadlinkat.h"
237 #include "allocator.h"
239 /* For serial_configure and serial_open. */
242 typedef HRESULT (WINAPI
* ShGetFolderPath_fn
)
243 (IN HWND
, IN
int, IN HANDLE
, IN DWORD
, OUT
char *);
245 void globals_of_w32 (void);
246 static DWORD
get_rid (PSID
);
247 static int is_symlink (const char *);
248 static char * chase_symlinks (const char *);
249 static int enable_privilege (LPCTSTR
, BOOL
, TOKEN_PRIVILEGES
*);
250 static int restore_privilege (TOKEN_PRIVILEGES
*);
251 static BOOL WINAPI
revert_to_self (void);
253 static int sys_access (const char *, int);
254 extern void *e_malloc (size_t);
255 extern int sys_select (int, SELECT_TYPE
*, SELECT_TYPE
*, SELECT_TYPE
*,
256 struct timespec
*, void *);
257 extern int sys_dup (int);
262 /* Initialization states.
264 WARNING: If you add any more such variables for additional APIs,
265 you MUST add initialization for them to globals_of_w32
266 below. This is because these variables might get set
267 to non-NULL values during dumping, but the dumped Emacs
268 cannot reuse those values, because it could be run on a
269 different version of the OS, where API addresses are
271 static BOOL g_b_init_is_windows_9x
;
272 static BOOL g_b_init_open_process_token
;
273 static BOOL g_b_init_get_token_information
;
274 static BOOL g_b_init_lookup_account_sid
;
275 static BOOL g_b_init_get_sid_sub_authority
;
276 static BOOL g_b_init_get_sid_sub_authority_count
;
277 static BOOL g_b_init_get_security_info
;
278 static BOOL g_b_init_get_file_security_w
;
279 static BOOL g_b_init_get_file_security_a
;
280 static BOOL g_b_init_get_security_descriptor_owner
;
281 static BOOL g_b_init_get_security_descriptor_group
;
282 static BOOL g_b_init_is_valid_sid
;
283 static BOOL g_b_init_create_toolhelp32_snapshot
;
284 static BOOL g_b_init_process32_first
;
285 static BOOL g_b_init_process32_next
;
286 static BOOL g_b_init_open_thread_token
;
287 static BOOL g_b_init_impersonate_self
;
288 static BOOL g_b_init_revert_to_self
;
289 static BOOL g_b_init_get_process_memory_info
;
290 static BOOL g_b_init_get_process_working_set_size
;
291 static BOOL g_b_init_global_memory_status
;
292 static BOOL g_b_init_global_memory_status_ex
;
293 static BOOL g_b_init_get_length_sid
;
294 static BOOL g_b_init_equal_sid
;
295 static BOOL g_b_init_copy_sid
;
296 static BOOL g_b_init_get_native_system_info
;
297 static BOOL g_b_init_get_system_times
;
298 static BOOL g_b_init_create_symbolic_link_w
;
299 static BOOL g_b_init_create_symbolic_link_a
;
300 static BOOL g_b_init_get_security_descriptor_dacl
;
301 static BOOL g_b_init_convert_sd_to_sddl
;
302 static BOOL g_b_init_convert_sddl_to_sd
;
303 static BOOL g_b_init_is_valid_security_descriptor
;
304 static BOOL g_b_init_set_file_security_w
;
305 static BOOL g_b_init_set_file_security_a
;
306 static BOOL g_b_init_set_named_security_info_w
;
307 static BOOL g_b_init_set_named_security_info_a
;
308 static BOOL g_b_init_get_adapters_info
;
310 BOOL g_b_init_compare_string_w
;
313 BEGIN: Wrapper functions around OpenProcessToken
314 and other functions in advapi32.dll that are only
315 supported in Windows NT / 2k / XP
317 /* ** Function pointer typedefs ** */
318 typedef BOOL (WINAPI
* OpenProcessToken_Proc
) (
319 HANDLE ProcessHandle
,
321 PHANDLE TokenHandle
);
322 typedef BOOL (WINAPI
* GetTokenInformation_Proc
) (
324 TOKEN_INFORMATION_CLASS TokenInformationClass
,
325 LPVOID TokenInformation
,
326 DWORD TokenInformationLength
,
327 PDWORD ReturnLength
);
328 typedef BOOL (WINAPI
* GetProcessTimes_Proc
) (
329 HANDLE process_handle
,
330 LPFILETIME creation_time
,
331 LPFILETIME exit_time
,
332 LPFILETIME kernel_time
,
333 LPFILETIME user_time
);
335 GetProcessTimes_Proc get_process_times_fn
= NULL
;
338 const char * const LookupAccountSid_Name
= "LookupAccountSidW";
340 const char * const LookupAccountSid_Name
= "LookupAccountSidA";
342 typedef BOOL (WINAPI
* LookupAccountSid_Proc
) (
343 LPCTSTR lpSystemName
,
348 LPDWORD cbDomainName
,
349 PSID_NAME_USE peUse
);
350 typedef PDWORD (WINAPI
* GetSidSubAuthority_Proc
) (
353 typedef PUCHAR (WINAPI
* GetSidSubAuthorityCount_Proc
) (
355 typedef DWORD (WINAPI
* GetSecurityInfo_Proc
) (
357 SE_OBJECT_TYPE ObjectType
,
358 SECURITY_INFORMATION SecurityInfo
,
363 PSECURITY_DESCRIPTOR
*ppSecurityDescriptor
);
364 typedef BOOL (WINAPI
* GetFileSecurityW_Proc
) (
366 SECURITY_INFORMATION RequestedInformation
,
367 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
369 LPDWORD lpnLengthNeeded
);
370 typedef BOOL (WINAPI
* GetFileSecurityA_Proc
) (
372 SECURITY_INFORMATION RequestedInformation
,
373 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
375 LPDWORD lpnLengthNeeded
);
376 typedef BOOL (WINAPI
*SetFileSecurityW_Proc
) (
378 SECURITY_INFORMATION SecurityInformation
,
379 PSECURITY_DESCRIPTOR pSecurityDescriptor
);
380 typedef BOOL (WINAPI
*SetFileSecurityA_Proc
) (
382 SECURITY_INFORMATION SecurityInformation
,
383 PSECURITY_DESCRIPTOR pSecurityDescriptor
);
384 typedef DWORD (WINAPI
*SetNamedSecurityInfoW_Proc
) (
385 LPCWSTR lpObjectName
,
386 SE_OBJECT_TYPE ObjectType
,
387 SECURITY_INFORMATION SecurityInformation
,
392 typedef DWORD (WINAPI
*SetNamedSecurityInfoA_Proc
) (
394 SE_OBJECT_TYPE ObjectType
,
395 SECURITY_INFORMATION SecurityInformation
,
400 typedef BOOL (WINAPI
* GetSecurityDescriptorOwner_Proc
) (
401 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
403 LPBOOL lpbOwnerDefaulted
);
404 typedef BOOL (WINAPI
* GetSecurityDescriptorGroup_Proc
) (
405 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
407 LPBOOL lpbGroupDefaulted
);
408 typedef BOOL (WINAPI
*GetSecurityDescriptorDacl_Proc
) (
409 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
410 LPBOOL lpbDaclPresent
,
412 LPBOOL lpbDaclDefaulted
);
413 typedef BOOL (WINAPI
* IsValidSid_Proc
) (
415 typedef HANDLE (WINAPI
* CreateToolhelp32Snapshot_Proc
) (
417 DWORD th32ProcessID
);
418 typedef BOOL (WINAPI
* Process32First_Proc
) (
420 LPPROCESSENTRY32 lppe
);
421 typedef BOOL (WINAPI
* Process32Next_Proc
) (
423 LPPROCESSENTRY32 lppe
);
424 typedef BOOL (WINAPI
* OpenThreadToken_Proc
) (
428 PHANDLE TokenHandle
);
429 typedef BOOL (WINAPI
* ImpersonateSelf_Proc
) (
430 SECURITY_IMPERSONATION_LEVEL ImpersonationLevel
);
431 typedef BOOL (WINAPI
* RevertToSelf_Proc
) (void);
432 typedef BOOL (WINAPI
* GetProcessMemoryInfo_Proc
) (
434 PPROCESS_MEMORY_COUNTERS ppsmemCounters
,
436 typedef BOOL (WINAPI
* GetProcessWorkingSetSize_Proc
) (
438 PSIZE_T lpMinimumWorkingSetSize
,
439 PSIZE_T lpMaximumWorkingSetSize
);
440 typedef BOOL (WINAPI
* GlobalMemoryStatus_Proc
) (
441 LPMEMORYSTATUS lpBuffer
);
442 typedef BOOL (WINAPI
* GlobalMemoryStatusEx_Proc
) (
443 LPMEMORY_STATUS_EX lpBuffer
);
444 typedef BOOL (WINAPI
* CopySid_Proc
) (
445 DWORD nDestinationSidLength
,
446 PSID pDestinationSid
,
448 typedef BOOL (WINAPI
* EqualSid_Proc
) (
451 typedef DWORD (WINAPI
* GetLengthSid_Proc
) (
453 typedef void (WINAPI
* GetNativeSystemInfo_Proc
) (
454 LPSYSTEM_INFO lpSystemInfo
);
455 typedef BOOL (WINAPI
* GetSystemTimes_Proc
) (
456 LPFILETIME lpIdleTime
,
457 LPFILETIME lpKernelTime
,
458 LPFILETIME lpUserTime
);
459 typedef BOOLEAN (WINAPI
*CreateSymbolicLinkW_Proc
) (
460 LPCWSTR lpSymlinkFileName
,
461 LPCWSTR lpTargetFileName
,
463 typedef BOOLEAN (WINAPI
*CreateSymbolicLinkA_Proc
) (
464 LPCSTR lpSymlinkFileName
,
465 LPCSTR lpTargetFileName
,
467 typedef BOOL (WINAPI
*ConvertStringSecurityDescriptorToSecurityDescriptor_Proc
) (
468 LPCTSTR StringSecurityDescriptor
,
469 DWORD StringSDRevision
,
470 PSECURITY_DESCRIPTOR
*SecurityDescriptor
,
471 PULONG SecurityDescriptorSize
);
472 typedef BOOL (WINAPI
*ConvertSecurityDescriptorToStringSecurityDescriptor_Proc
) (
473 PSECURITY_DESCRIPTOR SecurityDescriptor
,
474 DWORD RequestedStringSDRevision
,
475 SECURITY_INFORMATION SecurityInformation
,
476 LPTSTR
*StringSecurityDescriptor
,
477 PULONG StringSecurityDescriptorLen
);
478 typedef BOOL (WINAPI
*IsValidSecurityDescriptor_Proc
) (PSECURITY_DESCRIPTOR
);
479 typedef DWORD (WINAPI
*GetAdaptersInfo_Proc
) (
480 PIP_ADAPTER_INFO pAdapterInfo
,
483 int (WINAPI
*pMultiByteToWideChar
)(UINT
,DWORD
,LPCSTR
,int,LPWSTR
,int);
484 int (WINAPI
*pWideCharToMultiByte
)(UINT
,DWORD
,LPCWSTR
,int,LPSTR
,int,LPCSTR
,LPBOOL
);
486 /* ** A utility function ** */
490 static BOOL s_b_ret
= 0;
491 OSVERSIONINFO os_ver
;
492 if (g_b_init_is_windows_9x
== 0)
494 g_b_init_is_windows_9x
= 1;
495 ZeroMemory (&os_ver
, sizeof (OSVERSIONINFO
));
496 os_ver
.dwOSVersionInfoSize
= sizeof (OSVERSIONINFO
);
497 if (GetVersionEx (&os_ver
))
499 s_b_ret
= (os_ver
.dwPlatformId
== VER_PLATFORM_WIN32_WINDOWS
);
505 static Lisp_Object
ltime (ULONGLONG
);
507 /* Get total user and system times for get-internal-run-time.
508 Returns a list of integers if the times are provided by the OS
509 (NT derivatives), otherwise it returns the result of current-time. */
511 w32_get_internal_run_time (void)
513 if (get_process_times_fn
)
515 FILETIME create
, exit
, kernel
, user
;
516 HANDLE proc
= GetCurrentProcess ();
517 if ((*get_process_times_fn
) (proc
, &create
, &exit
, &kernel
, &user
))
519 LARGE_INTEGER user_int
, kernel_int
, total
;
520 user_int
.LowPart
= user
.dwLowDateTime
;
521 user_int
.HighPart
= user
.dwHighDateTime
;
522 kernel_int
.LowPart
= kernel
.dwLowDateTime
;
523 kernel_int
.HighPart
= kernel
.dwHighDateTime
;
524 total
.QuadPart
= user_int
.QuadPart
+ kernel_int
.QuadPart
;
525 return ltime (total
.QuadPart
);
529 return Fcurrent_time ();
532 /* ** The wrapper functions ** */
535 open_process_token (HANDLE ProcessHandle
,
539 static OpenProcessToken_Proc s_pfn_Open_Process_Token
= NULL
;
540 HMODULE hm_advapi32
= NULL
;
541 if (is_windows_9x () == TRUE
)
545 if (g_b_init_open_process_token
== 0)
547 g_b_init_open_process_token
= 1;
548 hm_advapi32
= LoadLibrary ("Advapi32.dll");
549 s_pfn_Open_Process_Token
=
550 (OpenProcessToken_Proc
) GetProcAddress (hm_advapi32
, "OpenProcessToken");
552 if (s_pfn_Open_Process_Token
== NULL
)
557 s_pfn_Open_Process_Token (
565 get_token_information (HANDLE TokenHandle
,
566 TOKEN_INFORMATION_CLASS TokenInformationClass
,
567 LPVOID TokenInformation
,
568 DWORD TokenInformationLength
,
571 static GetTokenInformation_Proc s_pfn_Get_Token_Information
= NULL
;
572 HMODULE hm_advapi32
= NULL
;
573 if (is_windows_9x () == TRUE
)
577 if (g_b_init_get_token_information
== 0)
579 g_b_init_get_token_information
= 1;
580 hm_advapi32
= LoadLibrary ("Advapi32.dll");
581 s_pfn_Get_Token_Information
=
582 (GetTokenInformation_Proc
) GetProcAddress (hm_advapi32
, "GetTokenInformation");
584 if (s_pfn_Get_Token_Information
== NULL
)
589 s_pfn_Get_Token_Information (
591 TokenInformationClass
,
593 TokenInformationLength
,
599 lookup_account_sid (LPCTSTR lpSystemName
,
604 LPDWORD cbDomainName
,
607 static LookupAccountSid_Proc s_pfn_Lookup_Account_Sid
= NULL
;
608 HMODULE hm_advapi32
= NULL
;
609 if (is_windows_9x () == TRUE
)
613 if (g_b_init_lookup_account_sid
== 0)
615 g_b_init_lookup_account_sid
= 1;
616 hm_advapi32
= LoadLibrary ("Advapi32.dll");
617 s_pfn_Lookup_Account_Sid
=
618 (LookupAccountSid_Proc
) GetProcAddress (hm_advapi32
, LookupAccountSid_Name
);
620 if (s_pfn_Lookup_Account_Sid
== NULL
)
625 s_pfn_Lookup_Account_Sid (
637 get_sid_sub_authority (PSID pSid
, DWORD n
)
639 static GetSidSubAuthority_Proc s_pfn_Get_Sid_Sub_Authority
= NULL
;
640 static DWORD zero
= 0U;
641 HMODULE hm_advapi32
= NULL
;
642 if (is_windows_9x () == TRUE
)
646 if (g_b_init_get_sid_sub_authority
== 0)
648 g_b_init_get_sid_sub_authority
= 1;
649 hm_advapi32
= LoadLibrary ("Advapi32.dll");
650 s_pfn_Get_Sid_Sub_Authority
=
651 (GetSidSubAuthority_Proc
) GetProcAddress (
652 hm_advapi32
, "GetSidSubAuthority");
654 if (s_pfn_Get_Sid_Sub_Authority
== NULL
)
658 return (s_pfn_Get_Sid_Sub_Authority (pSid
, n
));
662 get_sid_sub_authority_count (PSID pSid
)
664 static GetSidSubAuthorityCount_Proc s_pfn_Get_Sid_Sub_Authority_Count
= NULL
;
665 static UCHAR zero
= 0U;
666 HMODULE hm_advapi32
= NULL
;
667 if (is_windows_9x () == TRUE
)
671 if (g_b_init_get_sid_sub_authority_count
== 0)
673 g_b_init_get_sid_sub_authority_count
= 1;
674 hm_advapi32
= LoadLibrary ("Advapi32.dll");
675 s_pfn_Get_Sid_Sub_Authority_Count
=
676 (GetSidSubAuthorityCount_Proc
) GetProcAddress (
677 hm_advapi32
, "GetSidSubAuthorityCount");
679 if (s_pfn_Get_Sid_Sub_Authority_Count
== NULL
)
683 return (s_pfn_Get_Sid_Sub_Authority_Count (pSid
));
687 get_security_info (HANDLE handle
,
688 SE_OBJECT_TYPE ObjectType
,
689 SECURITY_INFORMATION SecurityInfo
,
694 PSECURITY_DESCRIPTOR
*ppSecurityDescriptor
)
696 static GetSecurityInfo_Proc s_pfn_Get_Security_Info
= NULL
;
697 HMODULE hm_advapi32
= NULL
;
698 if (is_windows_9x () == TRUE
)
702 if (g_b_init_get_security_info
== 0)
704 g_b_init_get_security_info
= 1;
705 hm_advapi32
= LoadLibrary ("Advapi32.dll");
706 s_pfn_Get_Security_Info
=
707 (GetSecurityInfo_Proc
) GetProcAddress (
708 hm_advapi32
, "GetSecurityInfo");
710 if (s_pfn_Get_Security_Info
== NULL
)
714 return (s_pfn_Get_Security_Info (handle
, ObjectType
, SecurityInfo
,
715 ppsidOwner
, ppsidGroup
, ppDacl
, ppSacl
,
716 ppSecurityDescriptor
));
720 get_file_security (const char *lpFileName
,
721 SECURITY_INFORMATION RequestedInformation
,
722 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
724 LPDWORD lpnLengthNeeded
)
726 static GetFileSecurityA_Proc s_pfn_Get_File_SecurityA
= NULL
;
727 static GetFileSecurityW_Proc s_pfn_Get_File_SecurityW
= NULL
;
728 HMODULE hm_advapi32
= NULL
;
729 if (is_windows_9x () == TRUE
)
734 if (w32_unicode_filenames
)
736 wchar_t filename_w
[MAX_PATH
];
738 if (g_b_init_get_file_security_w
== 0)
740 g_b_init_get_file_security_w
= 1;
741 hm_advapi32
= LoadLibrary ("Advapi32.dll");
742 s_pfn_Get_File_SecurityW
=
743 (GetFileSecurityW_Proc
) GetProcAddress (hm_advapi32
,
746 if (s_pfn_Get_File_SecurityW
== NULL
)
751 filename_to_utf16 (lpFileName
, filename_w
);
752 return (s_pfn_Get_File_SecurityW (filename_w
, RequestedInformation
,
753 pSecurityDescriptor
, nLength
,
758 char filename_a
[MAX_PATH
];
760 if (g_b_init_get_file_security_a
== 0)
762 g_b_init_get_file_security_a
= 1;
763 hm_advapi32
= LoadLibrary ("Advapi32.dll");
764 s_pfn_Get_File_SecurityA
=
765 (GetFileSecurityA_Proc
) GetProcAddress (hm_advapi32
,
768 if (s_pfn_Get_File_SecurityA
== NULL
)
773 filename_to_ansi (lpFileName
, filename_a
);
774 return (s_pfn_Get_File_SecurityA (filename_a
, RequestedInformation
,
775 pSecurityDescriptor
, nLength
,
781 set_file_security (const char *lpFileName
,
782 SECURITY_INFORMATION SecurityInformation
,
783 PSECURITY_DESCRIPTOR pSecurityDescriptor
)
785 static SetFileSecurityW_Proc s_pfn_Set_File_SecurityW
= NULL
;
786 static SetFileSecurityA_Proc s_pfn_Set_File_SecurityA
= NULL
;
787 HMODULE hm_advapi32
= NULL
;
788 if (is_windows_9x () == TRUE
)
793 if (w32_unicode_filenames
)
795 wchar_t filename_w
[MAX_PATH
];
797 if (g_b_init_set_file_security_w
== 0)
799 g_b_init_set_file_security_w
= 1;
800 hm_advapi32
= LoadLibrary ("Advapi32.dll");
801 s_pfn_Set_File_SecurityW
=
802 (SetFileSecurityW_Proc
) GetProcAddress (hm_advapi32
,
805 if (s_pfn_Set_File_SecurityW
== NULL
)
810 filename_to_utf16 (lpFileName
, filename_w
);
811 return (s_pfn_Set_File_SecurityW (filename_w
, SecurityInformation
,
812 pSecurityDescriptor
));
816 char filename_a
[MAX_PATH
];
818 if (g_b_init_set_file_security_a
== 0)
820 g_b_init_set_file_security_a
= 1;
821 hm_advapi32
= LoadLibrary ("Advapi32.dll");
822 s_pfn_Set_File_SecurityA
=
823 (SetFileSecurityA_Proc
) GetProcAddress (hm_advapi32
,
826 if (s_pfn_Set_File_SecurityA
== NULL
)
831 filename_to_ansi (lpFileName
, filename_a
);
832 return (s_pfn_Set_File_SecurityA (filename_a
, SecurityInformation
,
833 pSecurityDescriptor
));
838 set_named_security_info (LPCTSTR lpObjectName
,
839 SE_OBJECT_TYPE ObjectType
,
840 SECURITY_INFORMATION SecurityInformation
,
846 static SetNamedSecurityInfoW_Proc s_pfn_Set_Named_Security_InfoW
= NULL
;
847 static SetNamedSecurityInfoA_Proc s_pfn_Set_Named_Security_InfoA
= NULL
;
848 HMODULE hm_advapi32
= NULL
;
849 if (is_windows_9x () == TRUE
)
854 if (w32_unicode_filenames
)
856 wchar_t filename_w
[MAX_PATH
];
858 if (g_b_init_set_named_security_info_w
== 0)
860 g_b_init_set_named_security_info_w
= 1;
861 hm_advapi32
= LoadLibrary ("Advapi32.dll");
862 s_pfn_Set_Named_Security_InfoW
=
863 (SetNamedSecurityInfoW_Proc
) GetProcAddress (hm_advapi32
,
864 "SetNamedSecurityInfoW");
866 if (s_pfn_Set_Named_Security_InfoW
== NULL
)
871 filename_to_utf16 (lpObjectName
, filename_w
);
872 return (s_pfn_Set_Named_Security_InfoW (filename_w
, ObjectType
,
873 SecurityInformation
, psidOwner
,
874 psidGroup
, pDacl
, pSacl
));
878 char filename_a
[MAX_PATH
];
880 if (g_b_init_set_named_security_info_a
== 0)
882 g_b_init_set_named_security_info_a
= 1;
883 hm_advapi32
= LoadLibrary ("Advapi32.dll");
884 s_pfn_Set_Named_Security_InfoA
=
885 (SetNamedSecurityInfoA_Proc
) GetProcAddress (hm_advapi32
,
886 "SetNamedSecurityInfoA");
888 if (s_pfn_Set_Named_Security_InfoA
== NULL
)
893 filename_to_ansi (lpObjectName
, filename_a
);
894 return (s_pfn_Set_Named_Security_InfoA (filename_a
, ObjectType
,
895 SecurityInformation
, psidOwner
,
896 psidGroup
, pDacl
, pSacl
));
901 get_security_descriptor_owner (PSECURITY_DESCRIPTOR pSecurityDescriptor
,
903 LPBOOL lpbOwnerDefaulted
)
905 static GetSecurityDescriptorOwner_Proc s_pfn_Get_Security_Descriptor_Owner
= NULL
;
906 HMODULE hm_advapi32
= NULL
;
907 if (is_windows_9x () == TRUE
)
912 if (g_b_init_get_security_descriptor_owner
== 0)
914 g_b_init_get_security_descriptor_owner
= 1;
915 hm_advapi32
= LoadLibrary ("Advapi32.dll");
916 s_pfn_Get_Security_Descriptor_Owner
=
917 (GetSecurityDescriptorOwner_Proc
) GetProcAddress (
918 hm_advapi32
, "GetSecurityDescriptorOwner");
920 if (s_pfn_Get_Security_Descriptor_Owner
== NULL
)
925 return (s_pfn_Get_Security_Descriptor_Owner (pSecurityDescriptor
, pOwner
,
930 get_security_descriptor_group (PSECURITY_DESCRIPTOR pSecurityDescriptor
,
932 LPBOOL lpbGroupDefaulted
)
934 static GetSecurityDescriptorGroup_Proc s_pfn_Get_Security_Descriptor_Group
= NULL
;
935 HMODULE hm_advapi32
= NULL
;
936 if (is_windows_9x () == TRUE
)
941 if (g_b_init_get_security_descriptor_group
== 0)
943 g_b_init_get_security_descriptor_group
= 1;
944 hm_advapi32
= LoadLibrary ("Advapi32.dll");
945 s_pfn_Get_Security_Descriptor_Group
=
946 (GetSecurityDescriptorGroup_Proc
) GetProcAddress (
947 hm_advapi32
, "GetSecurityDescriptorGroup");
949 if (s_pfn_Get_Security_Descriptor_Group
== NULL
)
954 return (s_pfn_Get_Security_Descriptor_Group (pSecurityDescriptor
, pGroup
,
959 get_security_descriptor_dacl (PSECURITY_DESCRIPTOR pSecurityDescriptor
,
960 LPBOOL lpbDaclPresent
,
962 LPBOOL lpbDaclDefaulted
)
964 static GetSecurityDescriptorDacl_Proc s_pfn_Get_Security_Descriptor_Dacl
= NULL
;
965 HMODULE hm_advapi32
= NULL
;
966 if (is_windows_9x () == TRUE
)
971 if (g_b_init_get_security_descriptor_dacl
== 0)
973 g_b_init_get_security_descriptor_dacl
= 1;
974 hm_advapi32
= LoadLibrary ("Advapi32.dll");
975 s_pfn_Get_Security_Descriptor_Dacl
=
976 (GetSecurityDescriptorDacl_Proc
) GetProcAddress (
977 hm_advapi32
, "GetSecurityDescriptorDacl");
979 if (s_pfn_Get_Security_Descriptor_Dacl
== NULL
)
984 return (s_pfn_Get_Security_Descriptor_Dacl (pSecurityDescriptor
,
985 lpbDaclPresent
, pDacl
,
990 is_valid_sid (PSID sid
)
992 static IsValidSid_Proc s_pfn_Is_Valid_Sid
= NULL
;
993 HMODULE hm_advapi32
= NULL
;
994 if (is_windows_9x () == TRUE
)
998 if (g_b_init_is_valid_sid
== 0)
1000 g_b_init_is_valid_sid
= 1;
1001 hm_advapi32
= LoadLibrary ("Advapi32.dll");
1002 s_pfn_Is_Valid_Sid
=
1003 (IsValidSid_Proc
) GetProcAddress (
1004 hm_advapi32
, "IsValidSid");
1006 if (s_pfn_Is_Valid_Sid
== NULL
)
1010 return (s_pfn_Is_Valid_Sid (sid
));
1014 equal_sid (PSID sid1
, PSID sid2
)
1016 static EqualSid_Proc s_pfn_Equal_Sid
= NULL
;
1017 HMODULE hm_advapi32
= NULL
;
1018 if (is_windows_9x () == TRUE
)
1022 if (g_b_init_equal_sid
== 0)
1024 g_b_init_equal_sid
= 1;
1025 hm_advapi32
= LoadLibrary ("Advapi32.dll");
1027 (EqualSid_Proc
) GetProcAddress (
1028 hm_advapi32
, "EqualSid");
1030 if (s_pfn_Equal_Sid
== NULL
)
1034 return (s_pfn_Equal_Sid (sid1
, sid2
));
1038 get_length_sid (PSID sid
)
1040 static GetLengthSid_Proc s_pfn_Get_Length_Sid
= NULL
;
1041 HMODULE hm_advapi32
= NULL
;
1042 if (is_windows_9x () == TRUE
)
1046 if (g_b_init_get_length_sid
== 0)
1048 g_b_init_get_length_sid
= 1;
1049 hm_advapi32
= LoadLibrary ("Advapi32.dll");
1050 s_pfn_Get_Length_Sid
=
1051 (GetLengthSid_Proc
) GetProcAddress (
1052 hm_advapi32
, "GetLengthSid");
1054 if (s_pfn_Get_Length_Sid
== NULL
)
1058 return (s_pfn_Get_Length_Sid (sid
));
1062 copy_sid (DWORD destlen
, PSID dest
, PSID src
)
1064 static CopySid_Proc s_pfn_Copy_Sid
= NULL
;
1065 HMODULE hm_advapi32
= NULL
;
1066 if (is_windows_9x () == TRUE
)
1070 if (g_b_init_copy_sid
== 0)
1072 g_b_init_copy_sid
= 1;
1073 hm_advapi32
= LoadLibrary ("Advapi32.dll");
1075 (CopySid_Proc
) GetProcAddress (
1076 hm_advapi32
, "CopySid");
1078 if (s_pfn_Copy_Sid
== NULL
)
1082 return (s_pfn_Copy_Sid (destlen
, dest
, src
));
1086 END: Wrapper functions around OpenProcessToken
1087 and other functions in advapi32.dll that are only
1088 supported in Windows NT / 2k / XP
1092 get_native_system_info (LPSYSTEM_INFO lpSystemInfo
)
1094 static GetNativeSystemInfo_Proc s_pfn_Get_Native_System_Info
= NULL
;
1095 if (is_windows_9x () != TRUE
)
1097 if (g_b_init_get_native_system_info
== 0)
1099 g_b_init_get_native_system_info
= 1;
1100 s_pfn_Get_Native_System_Info
=
1101 (GetNativeSystemInfo_Proc
)GetProcAddress (GetModuleHandle ("kernel32.dll"),
1102 "GetNativeSystemInfo");
1104 if (s_pfn_Get_Native_System_Info
!= NULL
)
1105 s_pfn_Get_Native_System_Info (lpSystemInfo
);
1108 lpSystemInfo
->dwNumberOfProcessors
= -1;
1112 get_system_times (LPFILETIME lpIdleTime
,
1113 LPFILETIME lpKernelTime
,
1114 LPFILETIME lpUserTime
)
1116 static GetSystemTimes_Proc s_pfn_Get_System_times
= NULL
;
1117 if (is_windows_9x () == TRUE
)
1121 if (g_b_init_get_system_times
== 0)
1123 g_b_init_get_system_times
= 1;
1124 s_pfn_Get_System_times
=
1125 (GetSystemTimes_Proc
)GetProcAddress (GetModuleHandle ("kernel32.dll"),
1128 if (s_pfn_Get_System_times
== NULL
)
1130 return (s_pfn_Get_System_times (lpIdleTime
, lpKernelTime
, lpUserTime
));
1133 static BOOLEAN WINAPI
1134 create_symbolic_link (LPCSTR lpSymlinkFilename
,
1135 LPCSTR lpTargetFileName
,
1138 static CreateSymbolicLinkW_Proc s_pfn_Create_Symbolic_LinkW
= NULL
;
1139 static CreateSymbolicLinkA_Proc s_pfn_Create_Symbolic_LinkA
= NULL
;
1142 if (is_windows_9x () == TRUE
)
1147 if (w32_unicode_filenames
)
1149 wchar_t symfn_w
[MAX_PATH
], tgtfn_w
[MAX_PATH
];
1151 if (g_b_init_create_symbolic_link_w
== 0)
1153 g_b_init_create_symbolic_link_w
= 1;
1154 s_pfn_Create_Symbolic_LinkW
=
1155 (CreateSymbolicLinkW_Proc
)GetProcAddress (GetModuleHandle ("kernel32.dll"),
1156 "CreateSymbolicLinkW");
1158 if (s_pfn_Create_Symbolic_LinkW
== NULL
)
1164 filename_to_utf16 (lpSymlinkFilename
, symfn_w
);
1165 filename_to_utf16 (lpTargetFileName
, tgtfn_w
);
1166 retval
= s_pfn_Create_Symbolic_LinkW (symfn_w
, tgtfn_w
, dwFlags
);
1167 /* If we were denied creation of the symlink, try again after
1168 enabling the SeCreateSymbolicLinkPrivilege for our process. */
1171 TOKEN_PRIVILEGES priv_current
;
1173 if (enable_privilege (SE_CREATE_SYMBOLIC_LINK_NAME
, TRUE
,
1176 retval
= s_pfn_Create_Symbolic_LinkW (symfn_w
, tgtfn_w
, dwFlags
);
1177 restore_privilege (&priv_current
);
1184 char symfn_a
[MAX_PATH
], tgtfn_a
[MAX_PATH
];
1186 if (g_b_init_create_symbolic_link_a
== 0)
1188 g_b_init_create_symbolic_link_a
= 1;
1189 s_pfn_Create_Symbolic_LinkA
=
1190 (CreateSymbolicLinkA_Proc
)GetProcAddress (GetModuleHandle ("kernel32.dll"),
1191 "CreateSymbolicLinkA");
1193 if (s_pfn_Create_Symbolic_LinkA
== NULL
)
1199 filename_to_ansi (lpSymlinkFilename
, symfn_a
);
1200 filename_to_ansi (lpTargetFileName
, tgtfn_a
);
1201 retval
= s_pfn_Create_Symbolic_LinkA (symfn_a
, tgtfn_a
, dwFlags
);
1202 /* If we were denied creation of the symlink, try again after
1203 enabling the SeCreateSymbolicLinkPrivilege for our process. */
1206 TOKEN_PRIVILEGES priv_current
;
1208 if (enable_privilege (SE_CREATE_SYMBOLIC_LINK_NAME
, TRUE
,
1211 retval
= s_pfn_Create_Symbolic_LinkA (symfn_a
, tgtfn_a
, dwFlags
);
1212 restore_privilege (&priv_current
);
1221 is_valid_security_descriptor (PSECURITY_DESCRIPTOR pSecurityDescriptor
)
1223 static IsValidSecurityDescriptor_Proc s_pfn_Is_Valid_Security_Descriptor_Proc
= NULL
;
1225 if (is_windows_9x () == TRUE
)
1231 if (g_b_init_is_valid_security_descriptor
== 0)
1233 g_b_init_is_valid_security_descriptor
= 1;
1234 s_pfn_Is_Valid_Security_Descriptor_Proc
=
1235 (IsValidSecurityDescriptor_Proc
)GetProcAddress (GetModuleHandle ("Advapi32.dll"),
1236 "IsValidSecurityDescriptor");
1238 if (s_pfn_Is_Valid_Security_Descriptor_Proc
== NULL
)
1244 return s_pfn_Is_Valid_Security_Descriptor_Proc (pSecurityDescriptor
);
1248 convert_sd_to_sddl (PSECURITY_DESCRIPTOR SecurityDescriptor
,
1249 DWORD RequestedStringSDRevision
,
1250 SECURITY_INFORMATION SecurityInformation
,
1251 LPTSTR
*StringSecurityDescriptor
,
1252 PULONG StringSecurityDescriptorLen
)
1254 static ConvertSecurityDescriptorToStringSecurityDescriptor_Proc s_pfn_Convert_SD_To_SDDL
= NULL
;
1257 if (is_windows_9x () == TRUE
)
1263 if (g_b_init_convert_sd_to_sddl
== 0)
1265 g_b_init_convert_sd_to_sddl
= 1;
1267 s_pfn_Convert_SD_To_SDDL
=
1268 (ConvertSecurityDescriptorToStringSecurityDescriptor_Proc
)GetProcAddress (GetModuleHandle ("Advapi32.dll"),
1269 "ConvertSecurityDescriptorToStringSecurityDescriptorW");
1271 s_pfn_Convert_SD_To_SDDL
=
1272 (ConvertSecurityDescriptorToStringSecurityDescriptor_Proc
)GetProcAddress (GetModuleHandle ("Advapi32.dll"),
1273 "ConvertSecurityDescriptorToStringSecurityDescriptorA");
1276 if (s_pfn_Convert_SD_To_SDDL
== NULL
)
1282 retval
= s_pfn_Convert_SD_To_SDDL (SecurityDescriptor
,
1283 RequestedStringSDRevision
,
1284 SecurityInformation
,
1285 StringSecurityDescriptor
,
1286 StringSecurityDescriptorLen
);
1292 convert_sddl_to_sd (LPCTSTR StringSecurityDescriptor
,
1293 DWORD StringSDRevision
,
1294 PSECURITY_DESCRIPTOR
*SecurityDescriptor
,
1295 PULONG SecurityDescriptorSize
)
1297 static ConvertStringSecurityDescriptorToSecurityDescriptor_Proc s_pfn_Convert_SDDL_To_SD
= NULL
;
1300 if (is_windows_9x () == TRUE
)
1306 if (g_b_init_convert_sddl_to_sd
== 0)
1308 g_b_init_convert_sddl_to_sd
= 1;
1310 s_pfn_Convert_SDDL_To_SD
=
1311 (ConvertStringSecurityDescriptorToSecurityDescriptor_Proc
)GetProcAddress (GetModuleHandle ("Advapi32.dll"),
1312 "ConvertStringSecurityDescriptorToSecurityDescriptorW");
1314 s_pfn_Convert_SDDL_To_SD
=
1315 (ConvertStringSecurityDescriptorToSecurityDescriptor_Proc
)GetProcAddress (GetModuleHandle ("Advapi32.dll"),
1316 "ConvertStringSecurityDescriptorToSecurityDescriptorA");
1319 if (s_pfn_Convert_SDDL_To_SD
== NULL
)
1325 retval
= s_pfn_Convert_SDDL_To_SD (StringSecurityDescriptor
,
1328 SecurityDescriptorSize
);
1334 get_adapters_info (PIP_ADAPTER_INFO pAdapterInfo
, PULONG pOutBufLen
)
1336 static GetAdaptersInfo_Proc s_pfn_Get_Adapters_Info
= NULL
;
1337 HMODULE hm_iphlpapi
= NULL
;
1339 if (is_windows_9x () == TRUE
)
1340 return ERROR_NOT_SUPPORTED
;
1342 if (g_b_init_get_adapters_info
== 0)
1344 g_b_init_get_adapters_info
= 1;
1345 hm_iphlpapi
= LoadLibrary ("Iphlpapi.dll");
1347 s_pfn_Get_Adapters_Info
= (GetAdaptersInfo_Proc
)
1348 GetProcAddress (hm_iphlpapi
, "GetAdaptersInfo");
1350 if (s_pfn_Get_Adapters_Info
== NULL
)
1351 return ERROR_NOT_SUPPORTED
;
1352 return s_pfn_Get_Adapters_Info (pAdapterInfo
, pOutBufLen
);
1357 /* Return 1 if P is a valid pointer to an object of size SIZE. Return
1358 0 if P is NOT a valid pointer. Return -1 if we cannot validate P.
1360 This is called from alloc.c:valid_pointer_p. */
1362 w32_valid_pointer_p (void *p
, int size
)
1365 HANDLE h
= OpenProcess (PROCESS_VM_READ
, FALSE
, GetCurrentProcessId ());
1369 unsigned char *buf
= alloca (size
);
1370 int retval
= ReadProcessMemory (h
, p
, buf
, size
, &done
);
1381 /* Here's an overview of how the Windows build supports file names
1382 that cannot be encoded by the current system codepage.
1384 From the POV of Lisp and layers of C code above the functions here,
1385 Emacs on Windows pretends that its file names are encoded in UTF-8;
1386 see encode_file and decode_file on coding.c. Any file name that is
1387 passed as a unibyte string to C functions defined here is assumed
1388 to be in UTF-8 encoding. Any file name returned by functions
1389 defined here must be in UTF-8 encoding, with only a few exceptions
1390 reserved for a couple of special cases. (Be sure to use
1391 MAX_UTF8_PATH for char arrays that store UTF-8 encoded file names,
1392 as they can be much longer than MAX_PATH!)
1394 The UTF-8 encoded file names cannot be passed to system APIs, as
1395 Windows does not support that. Therefore, they are converted
1396 either to UTF-16 or to the ANSI codepage, depending on the value of
1397 w32-unicode-filenames, before calling any system APIs or CRT library
1398 functions. The default value of that variable is determined by the
1399 OS on which Emacs runs: nil on Windows 9X and t otherwise, but the
1400 user can change that default (although I don't see why would she
1403 The 4 functions defined below, filename_to_utf16, filename_to_ansi,
1404 filename_from_utf16, and filename_from_ansi, are the workhorses of
1405 these conversions. They rely on Windows native APIs
1406 MultiByteToWideChar and WideCharToMultiByte; we cannot use
1407 functions from coding.c here, because they allocate memory, which
1408 is a bad idea on the level of libc, which is what the functions
1409 here emulate. (If you worry about performance due to constant
1410 conversion back and forth from UTF-8 to UTF-16, then don't: first,
1411 it was measured to take only a few microseconds on a not-so-fast
1412 machine, and second, that's exactly what the ANSI APIs we used
1413 before did anyway, because they are just thin wrappers around the
1416 The variables file-name-coding-system and default-file-name-coding-system
1417 still exist, but are actually used only when a file name needs to
1418 be converted to the ANSI codepage. This happens all the time when
1419 w32-unicode-filenames is nil, but can also happen from time to time
1420 when it is t. Otherwise, these variables have no effect on file-name
1421 encoding when w32-unicode-filenames is t; this is similar to
1422 selection-coding-system.
1424 This arrangement works very well, but it has a few gotchas and
1427 . Lisp code that encodes or decodes file names manually should
1428 normally use 'utf-8' as the coding-system on Windows,
1429 disregarding file-name-coding-system. This is a somewhat
1430 unpleasant consequence, but it cannot be avoided. Fortunately,
1431 very few Lisp packages need to do that.
1433 More generally, passing to library functions (e.g., fopen or
1434 opendir) file names already encoded in the ANSI codepage is
1435 explicitly *verboten*, as all those functions, as shadowed and
1436 emulated here, assume they will receive UTF-8 encoded file names.
1438 For the same reasons, no CRT function or Win32 API can be called
1439 directly in Emacs sources, without either converting the file
1440 names from UTF-8 to UTF-16 or ANSI codepage, or going through
1441 some shadowing function defined here.
1443 . Environment variables stored in Vprocess_environment are encoded
1444 in the ANSI codepage, so if getenv/egetenv is used for a variable
1445 whose value is a file name or a list of directories, it needs to
1446 be converted to UTF-8, before it is used as argument to functions
1447 or decoded into a Lisp string.
1449 . File names passed to external libraries, like the image libraries
1450 and GnuTLS, need special handling. These libraries generally
1451 don't support UTF-16 or UTF-8 file names, so they must get file
1452 names encoded in the ANSI codepage. To facilitate using these
1453 libraries with file names that are not encodable in the ANSI
1454 codepage, use the function ansi_encode_filename, which will try
1455 to use the short 8+3 alias of a file name if that file name is
1456 not encodable in the ANSI codepage. See image.c and gnutls.c for
1457 examples of how this should be done.
1459 . Running subprocesses in non-ASCII directories and with non-ASCII
1460 file arguments is limited to the current codepage (even though
1461 Emacs is perfectly capable of finding an executable program file
1462 in a directory whose name cannot be encoded in the current
1463 codepage). This is because the command-line arguments are
1464 encoded _before_ they get to the w32-specific level, and the
1465 encoding is not known in advance (it doesn't have to be the
1466 current ANSI codepage), so w32proc.c functions cannot re-encode
1467 them in UTF-16. This should be fixed, but will also require
1468 changes in cmdproxy. The current limitation is not terribly bad
1469 anyway, since very few, if any, Windows console programs that are
1470 likely to be invoked by Emacs support UTF-16 encoded command
1473 . For similar reasons, server.el and emacsclient are also limited
1474 to the current ANSI codepage for now.
1476 . Emacs itself can only handle command-line arguments encoded in
1477 the current codepage.
1479 . Turning on w32-unicode-filename on Windows 9X (if it at all
1480 works) requires UNICOWS.DLL, which is thus a requirement even in
1481 non-GUI sessions, something the we previously avoided. */
1485 /* Converting file names from UTF-8 to either UTF-16 or the ANSI
1486 codepage defined by file-name-coding-system. */
1488 /* Current codepage for encoding file names. */
1489 static int file_name_codepage
;
1491 /* Produce a Windows ANSI codepage suitable for encoding file names.
1492 Return the information about that codepage in CP_INFO. */
1494 codepage_for_filenames (CPINFO
*cp_info
)
1496 /* A simple cache to avoid calling GetCPInfo every time we need to
1497 encode/decode a file name. The file-name encoding is not
1498 supposed to be changed too frequently, if ever. */
1499 static Lisp_Object last_file_name_encoding
;
1501 Lisp_Object current_encoding
;
1503 current_encoding
= Vfile_name_coding_system
;
1504 if (NILP (current_encoding
))
1505 current_encoding
= Vdefault_file_name_coding_system
;
1507 if (!EQ (last_file_name_encoding
, current_encoding
))
1509 /* Default to the current ANSI codepage. */
1510 file_name_codepage
= w32_ansi_code_page
;
1512 if (NILP (current_encoding
))
1514 char *cpname
= SDATA (SYMBOL_NAME (current_encoding
));
1515 char *cp
= NULL
, *end
;
1518 if (strncmp (cpname
, "cp", 2) == 0)
1520 else if (strncmp (cpname
, "windows-", 8) == 0)
1526 cpnum
= strtol (cp
, &end
, 10);
1527 if (cpnum
&& *end
== '\0' && end
- cp
>= 2)
1528 file_name_codepage
= cpnum
;
1532 if (!file_name_codepage
)
1533 file_name_codepage
= CP_ACP
; /* CP_ACP = 0, but let's not assume that */
1535 if (!GetCPInfo (file_name_codepage
, &cp
))
1537 file_name_codepage
= CP_ACP
;
1538 if (!GetCPInfo (file_name_codepage
, &cp
))
1545 return file_name_codepage
;
1549 filename_to_utf16 (const char *fn_in
, wchar_t *fn_out
)
1551 int result
= pMultiByteToWideChar (CP_UTF8
, MB_ERR_INVALID_CHARS
, fn_in
, -1,
1556 DWORD err
= GetLastError ();
1560 case ERROR_INVALID_FLAGS
:
1561 case ERROR_INVALID_PARAMETER
:
1564 case ERROR_INSUFFICIENT_BUFFER
:
1565 case ERROR_NO_UNICODE_TRANSLATION
:
1576 filename_from_utf16 (const wchar_t *fn_in
, char *fn_out
)
1578 int result
= pWideCharToMultiByte (CP_UTF8
, 0, fn_in
, -1,
1579 fn_out
, MAX_UTF8_PATH
, NULL
, NULL
);
1583 DWORD err
= GetLastError ();
1587 case ERROR_INVALID_FLAGS
:
1588 case ERROR_INVALID_PARAMETER
:
1591 case ERROR_INSUFFICIENT_BUFFER
:
1592 case ERROR_NO_UNICODE_TRANSLATION
:
1603 filename_to_ansi (const char *fn_in
, char *fn_out
)
1605 wchar_t fn_utf16
[MAX_PATH
];
1607 if (filename_to_utf16 (fn_in
, fn_utf16
) == 0)
1610 int codepage
= codepage_for_filenames (NULL
);
1612 result
= pWideCharToMultiByte (codepage
, 0, fn_utf16
, -1,
1613 fn_out
, MAX_PATH
, NULL
, NULL
);
1616 DWORD err
= GetLastError ();
1620 case ERROR_INVALID_FLAGS
:
1621 case ERROR_INVALID_PARAMETER
:
1624 case ERROR_INSUFFICIENT_BUFFER
:
1625 case ERROR_NO_UNICODE_TRANSLATION
:
1638 filename_from_ansi (const char *fn_in
, char *fn_out
)
1640 wchar_t fn_utf16
[MAX_PATH
];
1641 int codepage
= codepage_for_filenames (NULL
);
1642 int result
= pMultiByteToWideChar (codepage
, MB_ERR_INVALID_CHARS
, fn_in
, -1,
1643 fn_utf16
, MAX_PATH
);
1647 DWORD err
= GetLastError ();
1651 case ERROR_INVALID_FLAGS
:
1652 case ERROR_INVALID_PARAMETER
:
1655 case ERROR_INSUFFICIENT_BUFFER
:
1656 case ERROR_NO_UNICODE_TRANSLATION
:
1663 return filename_from_utf16 (fn_utf16
, fn_out
);
1668 /* The directory where we started, in UTF-8. */
1669 static char startup_dir
[MAX_UTF8_PATH
];
1671 /* Get the current working directory. */
1673 getcwd (char *dir
, int dirsize
)
1680 if (dirsize
<= strlen (startup_dir
))
1686 if (GetCurrentDirectory (MAXPATHLEN
, dir
) > 0)
1690 /* Emacs doesn't actually change directory itself, it stays in the
1691 same directory where it was started. */
1692 strcpy (dir
, startup_dir
);
1697 /* Emulate getloadavg. */
1699 struct load_sample
{
1706 /* Number of processors on this machine. */
1707 static unsigned num_of_processors
;
1709 /* We maintain 1-sec samples for the last 16 minutes in a circular buffer. */
1710 static struct load_sample samples
[16*60];
1711 static int first_idx
= -1, last_idx
= -1;
1712 static int max_idx
= ARRAYELTS (samples
);
1717 int next_idx
= from
+ 1;
1719 if (next_idx
>= max_idx
)
1728 int prev_idx
= from
- 1;
1731 prev_idx
= max_idx
- 1;
1737 sample_system_load (ULONGLONG
*idle
, ULONGLONG
*kernel
, ULONGLONG
*user
)
1739 SYSTEM_INFO sysinfo
;
1740 FILETIME ft_idle
, ft_user
, ft_kernel
;
1742 /* Initialize the number of processors on this machine. */
1743 if (num_of_processors
<= 0)
1745 get_native_system_info (&sysinfo
);
1746 num_of_processors
= sysinfo
.dwNumberOfProcessors
;
1747 if (num_of_processors
<= 0)
1749 GetSystemInfo (&sysinfo
);
1750 num_of_processors
= sysinfo
.dwNumberOfProcessors
;
1752 if (num_of_processors
<= 0)
1753 num_of_processors
= 1;
1756 /* TODO: Take into account threads that are ready to run, by
1757 sampling the "\System\Processor Queue Length" performance
1758 counter. The code below accounts only for threads that are
1759 actually running. */
1761 if (get_system_times (&ft_idle
, &ft_kernel
, &ft_user
))
1763 ULARGE_INTEGER uidle
, ukernel
, uuser
;
1765 memcpy (&uidle
, &ft_idle
, sizeof (ft_idle
));
1766 memcpy (&ukernel
, &ft_kernel
, sizeof (ft_kernel
));
1767 memcpy (&uuser
, &ft_user
, sizeof (ft_user
));
1768 *idle
= uidle
.QuadPart
;
1769 *kernel
= ukernel
.QuadPart
;
1770 *user
= uuser
.QuadPart
;
1780 /* Produce the load average for a given time interval, using the
1781 samples in the samples[] array. WHICH can be 0, 1, or 2, meaning
1782 1-minute, 5-minute, or 15-minute average, respectively. */
1786 double retval
= -1.0;
1789 double span
= (which
== 0 ? 1.0 : (which
== 1 ? 5.0 : 15.0)) * 60;
1790 time_t now
= samples
[last_idx
].sample_time
;
1792 if (first_idx
!= last_idx
)
1794 for (idx
= buf_prev (last_idx
); ; idx
= buf_prev (idx
))
1796 tdiff
= difftime (now
, samples
[idx
].sample_time
);
1797 if (tdiff
>= span
- 2*DBL_EPSILON
*now
)
1800 samples
[last_idx
].kernel
+ samples
[last_idx
].user
1801 - (samples
[idx
].kernel
+ samples
[idx
].user
);
1802 long double idl
= samples
[last_idx
].idle
- samples
[idx
].idle
;
1804 retval
= (1.0 - idl
/ sys
) * num_of_processors
;
1807 if (idx
== first_idx
)
1816 getloadavg (double loadavg
[], int nelem
)
1819 ULONGLONG idle
, kernel
, user
;
1820 time_t now
= time (NULL
);
1822 /* If system time jumped back for some reason, delete all samples
1823 whose time is later than the current wall-clock time. This
1824 prevents load average figures from becoming frozen for prolonged
1825 periods of time, when system time is reset backwards. */
1828 while (difftime (now
, samples
[last_idx
].sample_time
) < -1.0)
1830 if (last_idx
== first_idx
)
1832 first_idx
= last_idx
= -1;
1835 last_idx
= buf_prev (last_idx
);
1839 /* Store another sample. We ignore samples that are less than 1 sec
1842 || (difftime (now
, samples
[last_idx
].sample_time
)
1843 >= 1.0 - 2*DBL_EPSILON
*now
))
1845 sample_system_load (&idle
, &kernel
, &user
);
1846 last_idx
= buf_next (last_idx
);
1847 samples
[last_idx
].sample_time
= now
;
1848 samples
[last_idx
].idle
= idle
;
1849 samples
[last_idx
].kernel
= kernel
;
1850 samples
[last_idx
].user
= user
;
1851 /* If the buffer has more that 15 min worth of samples, discard
1853 if (first_idx
== -1)
1854 first_idx
= last_idx
;
1855 while (first_idx
!= last_idx
1856 && (difftime (now
, samples
[first_idx
].sample_time
)
1857 >= 15.0*60 + 2*DBL_EPSILON
*now
))
1858 first_idx
= buf_next (first_idx
);
1861 for (elem
= 0; elem
< nelem
; elem
++)
1863 double avg
= getavg (elem
);
1867 loadavg
[elem
] = avg
;
1873 /* Emulate getpwuid, getpwnam and others. */
1875 #define PASSWD_FIELD_SIZE 256
1877 static char dflt_passwd_name
[PASSWD_FIELD_SIZE
];
1878 static char dflt_passwd_passwd
[PASSWD_FIELD_SIZE
];
1879 static char dflt_passwd_gecos
[PASSWD_FIELD_SIZE
];
1880 static char dflt_passwd_dir
[MAX_UTF8_PATH
];
1881 static char dflt_passwd_shell
[MAX_UTF8_PATH
];
1883 static struct passwd dflt_passwd
=
1895 static char dflt_group_name
[GNLEN
+1];
1897 static struct group dflt_group
=
1899 /* When group information is not available, we return this as the
1900 group for all files. */
1908 return dflt_passwd
.pw_uid
;
1914 /* I could imagine arguing for checking to see whether the user is
1915 in the Administrators group and returning a UID of 0 for that
1916 case, but I don't know how wise that would be in the long run. */
1923 return dflt_passwd
.pw_gid
;
1933 getpwuid (unsigned uid
)
1935 if (uid
== dflt_passwd
.pw_uid
)
1936 return &dflt_passwd
;
1941 getgrgid (gid_t gid
)
1947 getpwnam (char *name
)
1951 pw
= getpwuid (getuid ());
1955 if (xstrcasecmp (name
, pw
->pw_name
))
1962 init_user_info (void)
1964 /* Find the user's real name by opening the process token and
1965 looking up the name associated with the user-sid in that token.
1967 Use the relative portion of the identifier authority value from
1968 the user-sid as the user id value (same for group id using the
1969 primary group sid from the process token). */
1971 char uname
[UNLEN
+1], gname
[GNLEN
+1], domain
[1025];
1972 DWORD ulength
= sizeof (uname
), dlength
= sizeof (domain
), needed
;
1973 DWORD glength
= sizeof (gname
);
1974 HANDLE token
= NULL
;
1975 SID_NAME_USE user_type
;
1976 unsigned char *buf
= NULL
;
1978 TOKEN_USER user_token
;
1979 TOKEN_PRIMARY_GROUP group_token
;
1982 result
= open_process_token (GetCurrentProcess (), TOKEN_QUERY
, &token
);
1985 result
= get_token_information (token
, TokenUser
, NULL
, 0, &blen
);
1986 if (!result
&& GetLastError () == ERROR_INSUFFICIENT_BUFFER
)
1988 buf
= xmalloc (blen
);
1989 result
= get_token_information (token
, TokenUser
,
1990 (LPVOID
)buf
, blen
, &needed
);
1993 memcpy (&user_token
, buf
, sizeof (user_token
));
1994 result
= lookup_account_sid (NULL
, user_token
.User
.Sid
,
1996 domain
, &dlength
, &user_type
);
2004 strcpy (dflt_passwd
.pw_name
, uname
);
2005 /* Determine a reasonable uid value. */
2006 if (xstrcasecmp ("administrator", uname
) == 0)
2008 dflt_passwd
.pw_uid
= 500; /* well-known Administrator uid */
2009 dflt_passwd
.pw_gid
= 513; /* well-known None gid */
2013 /* Use the last sub-authority value of the RID, the relative
2014 portion of the SID, as user/group ID. */
2015 dflt_passwd
.pw_uid
= get_rid (user_token
.User
.Sid
);
2017 /* Get group id and name. */
2018 result
= get_token_information (token
, TokenPrimaryGroup
,
2019 (LPVOID
)buf
, blen
, &needed
);
2020 if (!result
&& GetLastError () == ERROR_INSUFFICIENT_BUFFER
)
2022 buf
= xrealloc (buf
, blen
= needed
);
2023 result
= get_token_information (token
, TokenPrimaryGroup
,
2024 (LPVOID
)buf
, blen
, &needed
);
2028 memcpy (&group_token
, buf
, sizeof (group_token
));
2029 dflt_passwd
.pw_gid
= get_rid (group_token
.PrimaryGroup
);
2030 dlength
= sizeof (domain
);
2031 /* If we can get at the real Primary Group name, use that.
2032 Otherwise, the default group name was already set to
2033 "None" in globals_of_w32. */
2034 if (lookup_account_sid (NULL
, group_token
.PrimaryGroup
,
2035 gname
, &glength
, NULL
, &dlength
,
2037 strcpy (dflt_group_name
, gname
);
2040 dflt_passwd
.pw_gid
= dflt_passwd
.pw_uid
;
2043 /* If security calls are not supported (presumably because we
2044 are running under Windows 9X), fallback to this: */
2045 else if (GetUserName (uname
, &ulength
))
2047 strcpy (dflt_passwd
.pw_name
, uname
);
2048 if (xstrcasecmp ("administrator", uname
) == 0)
2049 dflt_passwd
.pw_uid
= 0;
2051 dflt_passwd
.pw_uid
= 123;
2052 dflt_passwd
.pw_gid
= dflt_passwd
.pw_uid
;
2056 strcpy (dflt_passwd
.pw_name
, "unknown");
2057 dflt_passwd
.pw_uid
= 123;
2058 dflt_passwd
.pw_gid
= 123;
2060 dflt_group
.gr_gid
= dflt_passwd
.pw_gid
;
2062 /* Set dir and shell from environment variables. */
2063 if (w32_unicode_filenames
)
2065 wchar_t *home
= _wgetenv (L
"HOME");
2066 wchar_t *shell
= _wgetenv (L
"SHELL");
2068 /* Ensure HOME and SHELL are defined. */
2073 filename_from_utf16 (home
, dflt_passwd
.pw_dir
);
2074 filename_from_utf16 (shell
, dflt_passwd
.pw_shell
);
2078 char *home
= getenv ("HOME");
2079 char *shell
= getenv ("SHELL");
2085 filename_from_ansi (home
, dflt_passwd
.pw_dir
);
2086 filename_from_ansi (shell
, dflt_passwd
.pw_shell
);
2091 CloseHandle (token
);
2097 /* rand () on NT gives us 15 random bits...hack together 30 bits. */
2098 return ((rand () << 15) | rand ());
2107 /* Return the maximum length in bytes of a multibyte character
2108 sequence encoded in the current ANSI codepage. This is required to
2109 correctly walk the encoded file names one character at a time. */
2111 max_filename_mbslen (void)
2115 codepage_for_filenames (&cp_info
);
2116 return cp_info
.MaxCharSize
;
2119 /* Normalize filename by converting in-place all of its path
2120 separators to the separator specified by PATH_SEP. */
2123 normalize_filename (register char *fp
, char path_sep
)
2127 /* Always lower-case drive letters a-z, even if the filesystem
2128 preserves case in filenames.
2129 This is so filenames can be compared by string comparison
2130 functions that are case-sensitive. Even case-preserving filesystems
2131 do not distinguish case in drive letters. */
2134 if (*p2
== ':' && *fp
>= 'A' && *fp
<= 'Z')
2142 if ((*fp
== '/' || *fp
== '\\') && *fp
!= path_sep
)
2148 /* Destructively turn backslashes into slashes. */
2150 dostounix_filename (register char *p
)
2152 normalize_filename (p
, '/');
2155 /* Destructively turn slashes into backslashes. */
2157 unixtodos_filename (register char *p
)
2159 normalize_filename (p
, '\\');
2162 /* Remove all CR's that are followed by a LF.
2163 (From msdos.c...probably should figure out a way to share it,
2164 although this code isn't going to ever change.) */
2166 crlf_to_lf (register int n
, register unsigned char *buf
)
2168 unsigned char *np
= buf
;
2169 unsigned char *startp
= buf
;
2170 unsigned char *endp
= buf
+ n
;
2174 while (buf
< endp
- 1)
2178 if (*(++buf
) != 0x0a)
2189 /* Parse the root part of file name, if present. Return length and
2190 optionally store pointer to char after root. */
2192 parse_root (const char * name
, const char ** pPath
)
2194 const char * start
= name
;
2199 /* find the root name of the volume if given */
2200 if (isalpha (name
[0]) && name
[1] == ':')
2202 /* skip past drive specifier */
2204 if (IS_DIRECTORY_SEP (name
[0]))
2207 else if (IS_DIRECTORY_SEP (name
[0]) && IS_DIRECTORY_SEP (name
[1]))
2214 if (IS_DIRECTORY_SEP (*name
) && --slashes
== 0)
2219 if (IS_DIRECTORY_SEP (name
[0]))
2226 return name
- start
;
2229 /* Get long base name for name; name is assumed to be absolute. */
2231 get_long_basename (char * name
, char * buf
, int size
)
2233 HANDLE dir_handle
= INVALID_HANDLE_VALUE
;
2234 char fname_utf8
[MAX_UTF8_PATH
];
2238 /* Must be valid filename, no wild cards or other invalid characters. */
2239 if (strpbrk (name
, "*?|<>\""))
2242 if (w32_unicode_filenames
)
2244 wchar_t fname_utf16
[MAX_PATH
];
2245 WIN32_FIND_DATAW find_data_wide
;
2247 filename_to_utf16 (name
, fname_utf16
);
2248 dir_handle
= FindFirstFileW (fname_utf16
, &find_data_wide
);
2249 if (dir_handle
!= INVALID_HANDLE_VALUE
)
2250 cstatus
= filename_from_utf16 (find_data_wide
.cFileName
, fname_utf8
);
2254 char fname_ansi
[MAX_PATH
];
2255 WIN32_FIND_DATAA find_data_ansi
;
2257 filename_to_ansi (name
, fname_ansi
);
2258 /* If the ANSI name includes ? characters, it is not encodable
2259 in the ANSI codepage. In that case, we deliver the question
2260 marks to the caller; calling FindFirstFileA in this case
2261 could return some unrelated file name in the same
2263 if (_mbspbrk (fname_ansi
, "?"))
2265 /* Find the basename of fname_ansi. */
2266 char *p
= strrchr (fname_ansi
, '\\');
2272 cstatus
= filename_from_ansi (p
, fname_utf8
);
2276 dir_handle
= FindFirstFileA (fname_ansi
, &find_data_ansi
);
2277 if (dir_handle
!= INVALID_HANDLE_VALUE
)
2278 cstatus
= filename_from_ansi (find_data_ansi
.cFileName
, fname_utf8
);
2282 if (cstatus
== 0 && (len
= strlen (fname_utf8
)) < size
)
2283 memcpy (buf
, fname_utf8
, len
+ 1);
2287 if (dir_handle
!= INVALID_HANDLE_VALUE
)
2288 FindClose (dir_handle
);
2293 /* Get long name for file, if possible (assumed to be absolute). */
2295 w32_get_long_filename (const char * name
, char * buf
, int size
)
2300 char full
[ MAX_UTF8_PATH
];
2303 len
= strlen (name
);
2304 if (len
>= MAX_UTF8_PATH
)
2307 /* Use local copy for destructive modification. */
2308 memcpy (full
, name
, len
+1);
2309 unixtodos_filename (full
);
2311 /* Copy root part verbatim. */
2312 len
= parse_root (full
, (const char **)&p
);
2313 memcpy (o
, full
, len
);
2318 while (p
!= NULL
&& *p
)
2321 p
= strchr (q
, '\\');
2323 len
= get_long_basename (full
, o
, size
);
2346 w32_get_short_filename (const char * name
, char * buf
, int size
)
2348 if (w32_unicode_filenames
)
2350 wchar_t name_utf16
[MAX_PATH
], short_name
[MAX_PATH
];
2351 unsigned int retval
;
2353 filename_to_utf16 (name
, name_utf16
);
2354 retval
= GetShortPathNameW (name_utf16
, short_name
, size
);
2355 if (retval
&& retval
< size
)
2356 filename_from_utf16 (short_name
, buf
);
2361 char name_ansi
[MAX_PATH
];
2363 filename_to_ansi (name
, name_ansi
);
2364 return GetShortPathNameA (name_ansi
, buf
, size
);
2368 /* Re-encode FILENAME, a UTF-8 encoded unibyte string, using the
2369 MS-Windows ANSI codepage. If FILENAME includes characters not
2370 supported by the ANSI codepage, return the 8+3 alias of FILENAME,
2371 if it exists. This is needed because the w32 build wants to
2372 support file names outside of the system locale, but image
2373 libraries typically don't support wide (a.k.a. "Unicode") APIs
2374 required for that. */
2377 ansi_encode_filename (Lisp_Object filename
)
2379 Lisp_Object encoded_filename
;
2380 char fname
[MAX_PATH
];
2382 filename_to_ansi (SSDATA (filename
), fname
);
2383 if (_mbspbrk (fname
, "?"))
2385 char shortname
[MAX_PATH
];
2387 if (w32_get_short_filename (SDATA (filename
), shortname
, MAX_PATH
))
2389 dostounix_filename (shortname
);
2390 encoded_filename
= build_string (shortname
);
2393 encoded_filename
= build_unibyte_string (fname
);
2396 encoded_filename
= build_unibyte_string (fname
);
2397 return encoded_filename
;
2401 is_unc_volume (const char *filename
)
2403 const char *ptr
= filename
;
2405 if (!IS_DIRECTORY_SEP (ptr
[0]) || !IS_DIRECTORY_SEP (ptr
[1]) || !ptr
[2])
2408 if (strpbrk (ptr
+ 2, "*?|<>\"\\/"))
2414 /* Emulate the Posix unsetenv. */
2416 unsetenv (const char *name
)
2421 if (name
== NULL
|| *name
== '\0' || strchr (name
, '=') != NULL
)
2426 name_len
= strlen (name
);
2427 /* MS docs says an environment variable cannot be longer than 32K. */
2428 if (name_len
> 32767)
2433 /* It is safe to use 'alloca' with 32K size, since the stack is at
2434 least 2MB, and we set it to 8MB in the link command line. */
2435 var
= alloca (name_len
+ 2);
2436 strncpy (var
, name
, name_len
);
2437 var
[name_len
++] = '=';
2438 var
[name_len
] = '\0';
2439 return _putenv (var
);
2442 /* MS _putenv doesn't support removing a variable when the argument
2443 does not include the '=' character, so we fix that here. */
2445 sys_putenv (char *str
)
2447 const char *const name_end
= strchr (str
, '=');
2449 if (name_end
== NULL
)
2451 /* Remove the variable from the environment. */
2452 return unsetenv (str
);
2455 return _putenv (str
);
2458 #define REG_ROOT "SOFTWARE\\GNU\\Emacs"
2461 w32_get_resource (char *key
, LPDWORD lpdwtype
)
2464 HKEY hrootkey
= NULL
;
2467 /* Check both the current user and the local machine to see if
2468 we have any resources. */
2470 if (RegOpenKeyEx (HKEY_CURRENT_USER
, REG_ROOT
, 0, KEY_READ
, &hrootkey
) == ERROR_SUCCESS
)
2474 if (RegQueryValueEx (hrootkey
, key
, NULL
, NULL
, NULL
, &cbData
) == ERROR_SUCCESS
2475 && (lpvalue
= xmalloc (cbData
)) != NULL
2476 && RegQueryValueEx (hrootkey
, key
, NULL
, lpdwtype
, lpvalue
, &cbData
) == ERROR_SUCCESS
)
2478 RegCloseKey (hrootkey
);
2484 RegCloseKey (hrootkey
);
2487 if (RegOpenKeyEx (HKEY_LOCAL_MACHINE
, REG_ROOT
, 0, KEY_READ
, &hrootkey
) == ERROR_SUCCESS
)
2491 if (RegQueryValueEx (hrootkey
, key
, NULL
, NULL
, NULL
, &cbData
) == ERROR_SUCCESS
2492 && (lpvalue
= xmalloc (cbData
)) != NULL
2493 && RegQueryValueEx (hrootkey
, key
, NULL
, lpdwtype
, lpvalue
, &cbData
) == ERROR_SUCCESS
)
2495 RegCloseKey (hrootkey
);
2501 RegCloseKey (hrootkey
);
2507 /* The argv[] array holds ANSI-encoded strings, and so this function
2508 works with ANS_encoded strings. */
2510 init_environment (char ** argv
)
2512 static const char * const tempdirs
[] = {
2513 "$TMPDIR", "$TEMP", "$TMP", "c:/"
2518 const int imax
= ARRAYELTS (tempdirs
);
2520 /* Implementation note: This function explicitly works with ANSI
2521 file names, not with UTF-8 encoded file names. This is because
2522 this function pushes variables into the Emacs's environment, and
2523 the environment variables are always assumed to be in the
2524 locale-specific encoding. Do NOT call any functions that accept
2525 UTF-8 file names from this function! */
2527 /* Make sure they have a usable $TMPDIR. Many Emacs functions use
2528 temporary files and assume "/tmp" if $TMPDIR is unset, which
2529 will break on DOS/Windows. Refuse to work if we cannot find
2530 a directory, not even "c:/", usable for that purpose. */
2531 for (i
= 0; i
< imax
; i
++)
2533 const char *tmp
= tempdirs
[i
];
2536 tmp
= getenv (tmp
+ 1);
2537 /* Note that `access' can lie to us if the directory resides on a
2538 read-only filesystem, like CD-ROM or a write-protected floppy.
2539 The only way to be really sure is to actually create a file and
2540 see if it succeeds. But I think that's too much to ask. */
2542 /* MSVCRT's _access crashes with D_OK, so we use our replacement. */
2543 if (tmp
&& sys_access (tmp
, D_OK
) == 0)
2545 char * var
= alloca (strlen (tmp
) + 8);
2546 sprintf (var
, "TMPDIR=%s", tmp
);
2547 _putenv (strdup (var
));
2554 Fcons (build_string ("no usable temporary directories found!!"),
2556 "While setting TMPDIR: ");
2558 /* Check for environment variables and use registry settings if they
2559 don't exist. Fallback on default values where applicable. */
2564 char locale_name
[32];
2565 char default_home
[MAX_PATH
];
2568 static const struct env_entry
2574 /* If the default value is NULL, we will use the value from the
2575 outside environment or the Registry, but will not push the
2576 variable into the Emacs environment if it is defined neither
2577 in the Registry nor in the outside environment. */
2579 {"PRELOAD_WINSOCK", NULL
},
2580 {"emacs_dir", "C:/emacs"},
2581 {"EMACSLOADPATH", NULL
},
2582 {"SHELL", "cmdproxy.exe"}, /* perhaps it is somewhere on PATH */
2583 {"EMACSDATA", NULL
},
2584 {"EMACSPATH", NULL
},
2591 #define N_ENV_VARS ARRAYELTS (dflt_envvars)
2593 /* We need to copy dflt_envvars[] and work on the copy because we
2594 don't want the dumped Emacs to inherit the values of
2595 environment variables we saw during dumping (which could be on
2596 a different system). The defaults above must be left intact. */
2597 struct env_entry env_vars
[N_ENV_VARS
];
2599 for (i
= 0; i
< N_ENV_VARS
; i
++)
2600 env_vars
[i
] = dflt_envvars
[i
];
2602 /* For backwards compatibility, check if a .emacs file exists in C:/
2603 If not, then we can try to default to the appdata directory under the
2604 user's profile, which is more likely to be writable. */
2605 if (sys_access ("C:/.emacs", F_OK
) != 0)
2607 HRESULT profile_result
;
2608 /* Dynamically load ShGetFolderPath, as it won't exist on versions
2609 of Windows 95 and NT4 that have not been updated to include
2611 ShGetFolderPath_fn get_folder_path
;
2612 get_folder_path
= (ShGetFolderPath_fn
)
2613 GetProcAddress (GetModuleHandle ("shell32.dll"), "SHGetFolderPathA");
2615 if (get_folder_path
!= NULL
)
2617 profile_result
= get_folder_path (NULL
, CSIDL_APPDATA
, NULL
,
2620 /* If we can't get the appdata dir, revert to old behavior. */
2621 if (profile_result
== S_OK
)
2623 env_vars
[0].def_value
= default_home
;
2629 /* Get default locale info and use it for LANG. */
2630 if (GetLocaleInfo (LOCALE_USER_DEFAULT
,
2631 LOCALE_SABBREVLANGNAME
| LOCALE_USE_CP_ACP
,
2632 locale_name
, sizeof (locale_name
)))
2634 for (i
= 0; i
< N_ENV_VARS
; i
++)
2636 if (strcmp (env_vars
[i
].name
, "LANG") == 0)
2638 env_vars
[i
].def_value
= locale_name
;
2644 #define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */
2646 /* Treat emacs_dir specially: set it unconditionally based on our
2650 char modname
[MAX_PATH
];
2652 if (!GetModuleFileNameA (NULL
, modname
, MAX_PATH
))
2654 if ((p
= _mbsrchr (modname
, '\\')) == NULL
)
2658 if ((p
= _mbsrchr (modname
, '\\'))
2659 /* From bin means installed Emacs, from src means uninstalled. */
2660 && (xstrcasecmp (p
, "\\bin") == 0 || xstrcasecmp (p
, "\\src") == 0))
2662 char buf
[SET_ENV_BUF_SIZE
];
2663 int within_build_tree
= xstrcasecmp (p
, "\\src") == 0;
2666 for (p
= modname
; *p
; p
= CharNext (p
))
2667 if (*p
== '\\') *p
= '/';
2669 _snprintf (buf
, sizeof (buf
)-1, "emacs_dir=%s", modname
);
2670 _putenv (strdup (buf
));
2671 /* If we are running from the Posix-like build tree, define
2672 SHELL to point to our own cmdproxy. The loop below will
2673 then disregard PATH_EXEC and the default value. */
2674 if (within_build_tree
)
2676 _snprintf (buf
, sizeof (buf
) - 1,
2677 "SHELL=%s/nt/cmdproxy.exe", modname
);
2678 _putenv (strdup (buf
));
2683 for (i
= 0; i
< N_ENV_VARS
; i
++)
2685 if (!getenv (env_vars
[i
].name
))
2688 char bufc
[SET_ENV_BUF_SIZE
];
2690 if ((lpval
= w32_get_resource (env_vars
[i
].name
, &dwType
)) == NULL
2691 /* Also ignore empty environment variables. */
2696 if (strcmp (env_vars
[i
].name
, "SHELL") == 0)
2698 /* Look for cmdproxy.exe in every directory in
2699 PATH_EXEC. FIXME: This does not find cmdproxy
2700 in nt/ when we run uninstalled. */
2701 char fname
[MAX_PATH
];
2702 const char *pstart
= PATH_EXEC
, *pend
;
2705 pend
= _mbschr (pstart
, ';');
2707 pend
= pstart
+ strlen (pstart
);
2708 /* Be defensive against series of ;;; characters. */
2711 strncpy (fname
, pstart
, pend
- pstart
);
2712 fname
[pend
- pstart
] = '/';
2713 strcpy (&fname
[pend
- pstart
+ 1], "cmdproxy.exe");
2714 ExpandEnvironmentStrings ((LPSTR
) fname
, bufc
,
2716 if (sys_access (bufc
, F_OK
) == 0)
2729 /* If not found in any directory, use the
2730 default as the last resort. */
2731 lpval
= env_vars
[i
].def_value
;
2732 dwType
= REG_EXPAND_SZ
;
2738 lpval
= env_vars
[i
].def_value
;
2739 dwType
= REG_EXPAND_SZ
;
2741 if (strcmp (env_vars
[i
].name
, "HOME") == 0 && !appdata
)
2742 Vdelayed_warnings_list
2743 = Fcons (listn (CONSTYPE_HEAP
, 2,
2744 intern ("initialization"),
2745 build_string ("Setting HOME to C:\\ by default is deprecated")),
2746 Vdelayed_warnings_list
);
2751 char buf1
[SET_ENV_BUF_SIZE
], buf2
[SET_ENV_BUF_SIZE
];
2753 if (dwType
== REG_EXPAND_SZ
)
2754 ExpandEnvironmentStrings ((LPSTR
) lpval
, buf1
, sizeof (buf1
));
2755 else if (dwType
== REG_SZ
)
2756 strcpy (buf1
, lpval
);
2757 if (dwType
== REG_EXPAND_SZ
|| dwType
== REG_SZ
)
2759 _snprintf (buf2
, sizeof (buf2
)-1, "%s=%s", env_vars
[i
].name
,
2761 _putenv (strdup (buf2
));
2771 /* Rebuild system configuration to reflect invoking system. */
2772 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2774 /* Another special case: on NT, the PATH variable is actually named
2775 "Path" although cmd.exe (perhaps NT itself) arranges for
2776 environment variable lookup and setting to be case insensitive.
2777 However, Emacs assumes a fully case sensitive environment, so we
2778 need to change "Path" to "PATH" to match the expectations of
2779 various elisp packages. We do this by the sneaky method of
2780 modifying the string in the C runtime environ entry.
2782 The same applies to COMSPEC. */
2786 for (envp
= environ
; *envp
; envp
++)
2787 if (_strnicmp (*envp
, "PATH=", 5) == 0)
2788 memcpy (*envp
, "PATH=", 5);
2789 else if (_strnicmp (*envp
, "COMSPEC=", 8) == 0)
2790 memcpy (*envp
, "COMSPEC=", 8);
2793 /* Remember the initial working directory for getcwd. */
2794 /* FIXME: Do we need to resolve possible symlinks in startup_dir?
2795 Does it matter anywhere in Emacs? */
2796 if (w32_unicode_filenames
)
2798 wchar_t wstartup_dir
[MAX_PATH
];
2800 if (!GetCurrentDirectoryW (MAX_PATH
, wstartup_dir
))
2802 filename_from_utf16 (wstartup_dir
, startup_dir
);
2806 char astartup_dir
[MAX_PATH
];
2808 if (!GetCurrentDirectoryA (MAX_PATH
, astartup_dir
))
2810 filename_from_ansi (astartup_dir
, startup_dir
);
2814 static char modname
[MAX_PATH
];
2816 if (!GetModuleFileNameA (NULL
, modname
, MAX_PATH
))
2821 /* Determine if there is a middle mouse button, to allow parse_button
2822 to decide whether right mouse events should be mouse-2 or
2824 w32_num_mouse_buttons
= GetSystemMetrics (SM_CMOUSEBUTTONS
);
2829 /* Called from expand-file-name when default-directory is not a string. */
2832 emacs_root_dir (void)
2834 static char root_dir
[MAX_UTF8_PATH
];
2837 p
= getenv ("emacs_dir");
2840 filename_from_ansi (p
, root_dir
);
2841 root_dir
[parse_root (root_dir
, NULL
)] = '\0';
2842 dostounix_filename (root_dir
);
2846 #include <sys/timeb.h>
2848 /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */
2850 gettimeofday (struct timeval
*__restrict tv
, struct timezone
*__restrict tz
)
2855 tv
->tv_sec
= tb
.time
;
2856 tv
->tv_usec
= tb
.millitm
* 1000L;
2857 /* Implementation note: _ftime sometimes doesn't update the dstflag
2858 according to the new timezone when the system timezone is
2859 changed. We could fix that by using GetSystemTime and
2860 GetTimeZoneInformation, but that doesn't seem necessary, since
2861 Emacs always calls gettimeofday with the 2nd argument NULL (see
2862 current_emacs_time). */
2865 tz
->tz_minuteswest
= tb
.timezone
; /* minutes west of Greenwich */
2866 tz
->tz_dsttime
= tb
.dstflag
; /* type of dst correction */
2871 /* Emulate fdutimens. */
2873 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2874 TIMESPEC[0] and TIMESPEC[1], respectively.
2875 FD must be either negative -- in which case it is ignored --
2876 or a file descriptor that is open on FILE.
2877 If FD is nonnegative, then FILE can be NULL, which means
2878 use just futimes instead of utimes.
2879 If TIMESPEC is null, FAIL.
2880 Return 0 on success, -1 (setting errno) on failure. */
2883 fdutimens (int fd
, char const *file
, struct timespec
const timespec
[2])
2890 if (fd
< 0 && !file
)
2895 /* _futime's prototype defines 2nd arg as having the type 'struct
2896 _utimbuf', while utime needs to accept 'struct utimbuf' for
2897 compatibility with Posix. So we need to use 2 different (but
2898 equivalent) types to avoid compiler warnings, sigh. */
2901 struct _utimbuf _ut
;
2903 _ut
.actime
= timespec
[0].tv_sec
;
2904 _ut
.modtime
= timespec
[1].tv_sec
;
2905 return _futime (fd
, &_ut
);
2911 ut
.actime
= timespec
[0].tv_sec
;
2912 ut
.modtime
= timespec
[1].tv_sec
;
2913 /* Call 'utime', which is implemented below, not the MS library
2914 function, which fails on directories. */
2915 return utime (file
, &ut
);
2920 /* ------------------------------------------------------------------------- */
2921 /* IO support and wrapper functions for the Windows API. */
2922 /* ------------------------------------------------------------------------- */
2924 /* Place a wrapper around the MSVC version of ctime. It returns NULL
2925 on network directories, so we handle that case here.
2926 (Ulrich Leodolter, 1/11/95). */
2928 sys_ctime (const time_t *t
)
2930 char *str
= (char *) ctime (t
);
2931 return (str
? str
: "Sun Jan 01 00:00:00 1970");
2934 /* Emulate sleep...we could have done this with a define, but that
2935 would necessitate including windows.h in the files that used it.
2936 This is much easier. */
2938 sys_sleep (int seconds
)
2940 Sleep (seconds
* 1000);
2943 /* Internal MSVC functions for low-level descriptor munging */
2944 extern int __cdecl
_set_osfhnd (int fd
, long h
);
2945 extern int __cdecl
_free_osfhnd (int fd
);
2947 /* parallel array of private info on file handles */
2948 filedesc fd_info
[ MAXDESC
];
2950 typedef struct volume_info_data
{
2951 struct volume_info_data
* next
;
2953 /* time when info was obtained */
2956 /* actual volume info */
2965 /* Global referenced by various functions. */
2966 static volume_info_data volume_info
;
2968 /* Vector to indicate which drives are local and fixed (for which cached
2969 data never expires). */
2970 static BOOL fixed_drives
[26];
2972 /* Consider cached volume information to be stale if older than 10s,
2973 at least for non-local drives. Info for fixed drives is never stale. */
2974 #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' )
2975 #define VOLINFO_STILL_VALID( root_dir, info ) \
2976 ( ( isalpha (root_dir[0]) && \
2977 fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \
2978 || GetTickCount () - info->timestamp < 10000 )
2980 /* Cache support functions. */
2982 /* Simple linked list with linear search is sufficient. */
2983 static volume_info_data
*volume_cache
= NULL
;
2985 static volume_info_data
*
2986 lookup_volume_info (char * root_dir
)
2988 volume_info_data
* info
;
2990 for (info
= volume_cache
; info
; info
= info
->next
)
2991 if (xstrcasecmp (info
->root_dir
, root_dir
) == 0)
2997 add_volume_info (char * root_dir
, volume_info_data
* info
)
2999 info
->root_dir
= xstrdup (root_dir
);
3000 unixtodos_filename (info
->root_dir
);
3001 info
->next
= volume_cache
;
3002 volume_cache
= info
;
3006 /* Wrapper for GetVolumeInformation, which uses caching to avoid
3007 performance penalty (~2ms on 486 for local drives, 7.5ms for local
3008 cdrom drive, ~5-10ms or more for remote drives on LAN). */
3009 static volume_info_data
*
3010 GetCachedVolumeInformation (char * root_dir
)
3012 volume_info_data
* info
;
3013 char default_root
[ MAX_UTF8_PATH
];
3014 char name
[MAX_PATH
+1];
3015 char type
[MAX_PATH
+1];
3017 /* NULL for root_dir means use root from current directory. */
3018 if (root_dir
== NULL
)
3020 if (w32_unicode_filenames
)
3022 wchar_t curdirw
[MAX_PATH
];
3024 if (GetCurrentDirectoryW (MAX_PATH
, curdirw
) == 0)
3026 filename_from_utf16 (curdirw
, default_root
);
3030 char curdira
[MAX_PATH
];
3032 if (GetCurrentDirectoryA (MAX_PATH
, curdira
) == 0)
3034 filename_from_ansi (curdira
, default_root
);
3036 parse_root (default_root
, (const char **)&root_dir
);
3038 root_dir
= default_root
;
3041 /* Local fixed drives can be cached permanently. Removable drives
3042 cannot be cached permanently, since the volume name and serial
3043 number (if nothing else) can change. Remote drives should be
3044 treated as if they are removable, since there is no sure way to
3045 tell whether they are or not. Also, the UNC association of drive
3046 letters mapped to remote volumes can be changed at any time (even
3047 by other processes) without notice.
3049 As a compromise, so we can benefit from caching info for remote
3050 volumes, we use a simple expiry mechanism to invalidate cache
3051 entries that are more than ten seconds old. */
3054 /* No point doing this, because WNetGetConnection is even slower than
3055 GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW,
3056 GetDriveType is about the only call of this type which does not
3057 involve network access, and so is extremely quick). */
3059 /* Map drive letter to UNC if remote. */
3060 if (isalpha (root_dir
[0]) && !fixed
[DRIVE_INDEX (root_dir
[0])])
3062 char remote_name
[ 256 ];
3063 char drive
[3] = { root_dir
[0], ':' };
3065 if (WNetGetConnection (drive
, remote_name
, sizeof (remote_name
))
3067 /* do something */ ;
3071 info
= lookup_volume_info (root_dir
);
3073 if (info
== NULL
|| ! VOLINFO_STILL_VALID (root_dir
, info
))
3079 /* Info is not cached, or is stale. */
3080 if (w32_unicode_filenames
)
3082 wchar_t root_w
[MAX_PATH
];
3083 wchar_t name_w
[MAX_PATH
+1];
3084 wchar_t type_w
[MAX_PATH
+1];
3086 filename_to_utf16 (root_dir
, root_w
);
3087 if (!GetVolumeInformationW (root_w
,
3088 name_w
, sizeof (name_w
),
3092 type_w
, sizeof (type_w
)))
3094 /* Hmm... not really 100% correct, as these 2 are not file
3096 filename_from_utf16 (name_w
, name
);
3097 filename_from_utf16 (type_w
, type
);
3101 char root_a
[MAX_PATH
];
3102 char name_a
[MAX_PATH
+1];
3103 char type_a
[MAX_PATH
+1];
3105 filename_to_ansi (root_dir
, root_a
);
3106 if (!GetVolumeInformationA (root_a
,
3107 name_a
, sizeof (name_a
),
3111 type_a
, sizeof (type_a
)))
3113 filename_from_ansi (name_a
, name
);
3114 filename_from_ansi (type_a
, type
);
3117 /* Cache the volume information for future use, overwriting existing
3118 entry if present. */
3121 info
= xmalloc (sizeof (volume_info_data
));
3122 add_volume_info (root_dir
, info
);
3130 info
->name
= xstrdup (name
);
3131 unixtodos_filename (info
->name
);
3132 info
->serialnum
= serialnum
;
3133 info
->maxcomp
= maxcomp
;
3134 info
->flags
= flags
;
3135 info
->type
= xstrdup (type
);
3136 info
->timestamp
= GetTickCount ();
3142 /* Get information on the volume where NAME is held; set path pointer to
3143 start of pathname in NAME (past UNC header\volume header if present),
3144 if pPath is non-NULL.
3146 Note: if NAME includes symlinks, the information is for the volume
3147 of the symlink, not of its target. That's because, even though
3148 GetVolumeInformation returns information about the symlink target
3149 of its argument, we only pass the root directory to
3150 GetVolumeInformation, not the full NAME. */
3152 get_volume_info (const char * name
, const char ** pPath
)
3154 char temp
[MAX_UTF8_PATH
];
3155 char *rootname
= NULL
; /* default to current volume */
3156 volume_info_data
* info
;
3157 int root_len
= parse_root (name
, pPath
);
3162 /* Copy the root name of the volume, if given. */
3165 strncpy (temp
, name
, root_len
);
3166 temp
[root_len
] = '\0';
3167 unixtodos_filename (temp
);
3171 info
= GetCachedVolumeInformation (rootname
);
3174 /* Set global referenced by other functions. */
3175 volume_info
= *info
;
3181 /* Determine if volume is FAT format (ie. only supports short 8.3
3182 names); also set path pointer to start of pathname in name, if
3183 pPath is non-NULL. */
3185 is_fat_volume (const char * name
, const char ** pPath
)
3187 if (get_volume_info (name
, pPath
))
3188 return (volume_info
.maxcomp
== 12);
3192 /* Convert all slashes in a filename to backslashes, and map filename
3193 to a valid 8.3 name if necessary. The result is a pointer to a
3194 static buffer, so CAVEAT EMPTOR! */
3196 map_w32_filename (const char * name
, const char ** pPath
)
3198 static char shortname
[MAX_UTF8_PATH
];
3199 char * str
= shortname
;
3202 const char * save_name
= name
;
3204 if (strlen (name
) >= sizeof (shortname
))
3206 /* Return a filename which will cause callers to fail. */
3207 strcpy (shortname
, "?");
3211 if (is_fat_volume (name
, (const char **)&path
)) /* truncate to 8.3 */
3213 register int left
= 8; /* maximum number of chars in part */
3214 register int extn
= 0; /* extension added? */
3215 register int dots
= 2; /* maximum number of dots allowed */
3218 *str
++ = *name
++; /* skip past UNC header */
3220 while ((c
= *name
++))
3227 *str
++ = (c
== ':' ? ':' : '\\');
3228 extn
= 0; /* reset extension flags */
3229 dots
= 2; /* max 2 dots */
3230 left
= 8; /* max length 8 for main part */
3235 /* Convert path components of the form .xxx to _xxx,
3236 but leave . and .. as they are. This allows .emacs
3237 to be read as _emacs, for example. */
3241 IS_DIRECTORY_SEP (*name
))
3256 extn
= 1; /* we've got an extension */
3257 left
= 3; /* 3 chars in extension */
3261 /* any embedded dots after the first are converted to _ */
3266 case '#': /* don't lose these, they're important */
3268 str
[-1] = c
; /* replace last character of part */
3271 if ( left
&& 'A' <= c
&& c
<= 'Z' )
3273 *str
++ = tolower (c
); /* map to lower case (looks nicer) */
3275 dots
= 0; /* started a path component */
3284 strcpy (shortname
, name
);
3285 unixtodos_filename (shortname
);
3289 *pPath
= shortname
+ (path
- save_name
);
3295 is_exec (const char * name
)
3297 char * p
= strrchr (name
, '.');
3300 && (xstrcasecmp (p
, ".exe") == 0 ||
3301 xstrcasecmp (p
, ".com") == 0 ||
3302 xstrcasecmp (p
, ".bat") == 0 ||
3303 xstrcasecmp (p
, ".cmd") == 0));
3306 /* Emulate the Unix directory procedures opendir, closedir, and
3307 readdir. We rename them to sys_* names because some versions of
3308 MinGW startup code call opendir and readdir to glob wildcards, and
3309 the code that calls them doesn't grok UTF-8 encoded file names we
3310 produce in dirent->d_name[]. */
3312 struct dirent dir_static
; /* simulated directory contents */
3313 static HANDLE dir_find_handle
= INVALID_HANDLE_VALUE
;
3314 static int dir_is_fat
;
3315 static char dir_pathname
[MAX_UTF8_PATH
];
3316 static WIN32_FIND_DATAW dir_find_data_w
;
3317 static WIN32_FIND_DATAA dir_find_data_a
;
3318 #define DIR_FIND_DATA_W 1
3319 #define DIR_FIND_DATA_A 2
3320 static int last_dir_find_data
= -1;
3322 /* Support shares on a network resource as subdirectories of a read-only
3324 static HANDLE wnet_enum_handle
= INVALID_HANDLE_VALUE
;
3325 static HANDLE
open_unc_volume (const char *);
3326 static void *read_unc_volume (HANDLE
, wchar_t *, char *, int);
3327 static void close_unc_volume (HANDLE
);
3330 sys_opendir (const char *filename
)
3334 /* Opening is done by FindFirstFile. However, a read is inherent to
3335 this operation, so we defer the open until read time. */
3337 if (dir_find_handle
!= INVALID_HANDLE_VALUE
)
3339 if (wnet_enum_handle
!= INVALID_HANDLE_VALUE
)
3342 /* Note: We don't support traversal of UNC volumes via symlinks.
3343 Doing so would mean punishing 99.99% of use cases by resolving
3344 all the possible symlinks in FILENAME, recursively. */
3345 if (is_unc_volume (filename
))
3347 wnet_enum_handle
= open_unc_volume (filename
);
3348 if (wnet_enum_handle
== INVALID_HANDLE_VALUE
)
3352 if (!(dirp
= (DIR *) malloc (sizeof (DIR))))
3359 strncpy (dir_pathname
, map_w32_filename (filename
, NULL
), MAX_UTF8_PATH
- 1);
3360 dir_pathname
[MAX_UTF8_PATH
- 1] = '\0';
3361 /* Note: We don't support symlinks to file names on FAT volumes.
3362 Doing so would mean punishing 99.99% of use cases by resolving
3363 all the possible symlinks in FILENAME, recursively. */
3364 dir_is_fat
= is_fat_volume (filename
, NULL
);
3370 sys_closedir (DIR *dirp
)
3372 /* If we have a find-handle open, close it. */
3373 if (dir_find_handle
!= INVALID_HANDLE_VALUE
)
3375 FindClose (dir_find_handle
);
3376 dir_find_handle
= INVALID_HANDLE_VALUE
;
3378 else if (wnet_enum_handle
!= INVALID_HANDLE_VALUE
)
3380 close_unc_volume (wnet_enum_handle
);
3381 wnet_enum_handle
= INVALID_HANDLE_VALUE
;
3383 xfree ((char *) dirp
);
3387 sys_readdir (DIR *dirp
)
3389 int downcase
= !NILP (Vw32_downcase_file_names
);
3391 if (wnet_enum_handle
!= INVALID_HANDLE_VALUE
)
3393 if (!read_unc_volume (wnet_enum_handle
,
3394 dir_find_data_w
.cFileName
,
3395 dir_find_data_a
.cFileName
,
3399 /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */
3400 else if (dir_find_handle
== INVALID_HANDLE_VALUE
)
3402 char filename
[MAX_UTF8_PATH
+ 2];
3405 strcpy (filename
, dir_pathname
);
3406 ln
= strlen (filename
);
3407 if (!IS_DIRECTORY_SEP (filename
[ln
- 1]))
3408 filename
[ln
++] = '\\';
3409 strcpy (filename
+ ln
, "*");
3411 /* Note: No need to resolve symlinks in FILENAME, because
3412 FindFirst opens the directory that is the target of a
3414 if (w32_unicode_filenames
)
3416 wchar_t fnw
[MAX_PATH
];
3418 filename_to_utf16 (filename
, fnw
);
3419 dir_find_handle
= FindFirstFileW (fnw
, &dir_find_data_w
);
3425 filename_to_ansi (filename
, fna
);
3426 /* If FILENAME is not representable by the current ANSI
3427 codepage, we don't want FindFirstFileA to interpret the
3428 '?' characters as a wildcard. */
3429 if (_mbspbrk (fna
, "?"))
3430 dir_find_handle
= INVALID_HANDLE_VALUE
;
3432 dir_find_handle
= FindFirstFileA (fna
, &dir_find_data_a
);
3435 if (dir_find_handle
== INVALID_HANDLE_VALUE
)
3437 /* Any changes in the value of errno here should be in sync
3438 with what directory_files_internal does when it calls
3440 switch (GetLastError ())
3442 /* Windows uses this value when FindFirstFile finds no
3443 files that match the wildcard. This is not supposed
3444 to happen, since our wildcard is "*", but just in
3445 case, if there's some weird empty directory with not
3446 even "." and ".." entries... */
3447 case ERROR_FILE_NOT_FOUND
:
3452 case ERROR_ACCESS_DENIED
:
3453 case ERROR_NETWORK_ACCESS_DENIED
:
3456 case ERROR_PATH_NOT_FOUND
:
3457 case ERROR_INVALID_DRIVE
:
3458 case ERROR_BAD_NETPATH
:
3459 case ERROR_BAD_NET_NAME
:
3466 else if (w32_unicode_filenames
)
3468 if (!FindNextFileW (dir_find_handle
, &dir_find_data_w
))
3476 if (!FindNextFileA (dir_find_handle
, &dir_find_data_a
))
3483 /* Emacs never uses this value, so don't bother making it match
3484 value returned by stat(). */
3485 dir_static
.d_ino
= 1;
3487 if (w32_unicode_filenames
)
3489 if (downcase
|| dir_is_fat
)
3491 wchar_t tem
[MAX_PATH
];
3493 wcscpy (tem
, dir_find_data_w
.cFileName
);
3495 filename_from_utf16 (tem
, dir_static
.d_name
);
3498 filename_from_utf16 (dir_find_data_w
.cFileName
, dir_static
.d_name
);
3499 last_dir_find_data
= DIR_FIND_DATA_W
;
3505 /* If the file name in cFileName[] includes `?' characters, it
3506 means the original file name used characters that cannot be
3507 represented by the current ANSI codepage. To avoid total
3508 lossage, retrieve the short 8+3 alias of the long file
3510 if (_mbspbrk (dir_find_data_a
.cFileName
, "?"))
3512 strcpy (tem
, dir_find_data_a
.cAlternateFileName
);
3513 /* 8+3 aliases are returned in all caps, which could break
3514 various alists that look at filenames' extensions. */
3517 else if (downcase
|| dir_is_fat
)
3518 strcpy (tem
, dir_find_data_a
.cFileName
);
3520 filename_from_ansi (dir_find_data_a
.cFileName
, dir_static
.d_name
);
3521 if (downcase
|| dir_is_fat
)
3524 filename_from_ansi (tem
, dir_static
.d_name
);
3526 last_dir_find_data
= DIR_FIND_DATA_A
;
3529 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3530 dir_static
.d_reclen
= sizeof (struct dirent
) - MAX_UTF8_PATH
+ 3 +
3531 dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3537 open_unc_volume (const char *path
)
3539 const char *fn
= map_w32_filename (path
, NULL
);
3543 if (w32_unicode_filenames
)
3546 wchar_t fnw
[MAX_PATH
];
3548 nrw
.dwScope
= RESOURCE_GLOBALNET
;
3549 nrw
.dwType
= RESOURCETYPE_DISK
;
3550 nrw
.dwDisplayType
= RESOURCEDISPLAYTYPE_SERVER
;
3551 nrw
.dwUsage
= RESOURCEUSAGE_CONTAINER
;
3552 nrw
.lpLocalName
= NULL
;
3553 filename_to_utf16 (fn
, fnw
);
3554 nrw
.lpRemoteName
= fnw
;
3555 nrw
.lpComment
= NULL
;
3556 nrw
.lpProvider
= NULL
;
3558 result
= WNetOpenEnumW (RESOURCE_GLOBALNET
, RESOURCETYPE_DISK
,
3559 RESOURCEUSAGE_CONNECTABLE
, &nrw
, &henum
);
3566 nra
.dwScope
= RESOURCE_GLOBALNET
;
3567 nra
.dwType
= RESOURCETYPE_DISK
;
3568 nra
.dwDisplayType
= RESOURCEDISPLAYTYPE_SERVER
;
3569 nra
.dwUsage
= RESOURCEUSAGE_CONTAINER
;
3570 nra
.lpLocalName
= NULL
;
3571 filename_to_ansi (fn
, fna
);
3572 nra
.lpRemoteName
= fna
;
3573 nra
.lpComment
= NULL
;
3574 nra
.lpProvider
= NULL
;
3576 result
= WNetOpenEnumA (RESOURCE_GLOBALNET
, RESOURCETYPE_DISK
,
3577 RESOURCEUSAGE_CONNECTABLE
, &nra
, &henum
);
3579 if (result
== NO_ERROR
)
3583 /* Make sure directory_files_internal reports a sensible error. */
3585 return INVALID_HANDLE_VALUE
;
3590 read_unc_volume (HANDLE henum
, wchar_t *fname_w
, char *fname_a
, int size
)
3595 DWORD bufsize
= 512;
3599 if (w32_unicode_filenames
)
3604 buffer
= alloca (bufsize
);
3605 result
= WNetEnumResourceW (henum
, &count
, buffer
, &bufsize
);
3606 if (result
!= NO_ERROR
)
3608 /* WNetEnumResource returns \\resource\share...skip forward to "share". */
3609 ptrw
= ((LPNETRESOURCEW
) buffer
)->lpRemoteName
;
3611 while (*ptrw
&& *ptrw
!= L
'/' && *ptrw
!= L
'\\') ptrw
++;
3613 wcsncpy (fname_w
, ptrw
, size
);
3618 int dbcs_p
= max_filename_mbslen () > 1;
3621 buffer
= alloca (bufsize
);
3622 result
= WNetEnumResourceA (henum
, &count
, buffer
, &bufsize
);
3623 if (result
!= NO_ERROR
)
3625 ptra
= ((LPNETRESOURCEA
) buffer
)->lpRemoteName
;
3628 while (*ptra
&& !IS_DIRECTORY_SEP (*ptra
)) ptra
++;
3631 while (*ptra
&& !IS_DIRECTORY_SEP (*ptra
))
3632 ptra
= CharNextExA (file_name_codepage
, ptra
, 0);
3635 strncpy (fname_a
, ptra
, size
);
3643 close_unc_volume (HANDLE henum
)
3645 if (henum
!= INVALID_HANDLE_VALUE
)
3646 WNetCloseEnum (henum
);
3650 unc_volume_file_attributes (const char *path
)
3655 henum
= open_unc_volume (path
);
3656 if (henum
== INVALID_HANDLE_VALUE
)
3659 attrs
= FILE_ATTRIBUTE_READONLY
| FILE_ATTRIBUTE_DIRECTORY
;
3661 close_unc_volume (henum
);
3666 /* Ensure a network connection is authenticated. */
3668 logon_network_drive (const char *path
)
3670 char share
[MAX_UTF8_PATH
];
3677 if (IS_DIRECTORY_SEP (path
[0]) && IS_DIRECTORY_SEP (path
[1]))
3678 drvtype
= DRIVE_REMOTE
;
3679 else if (path
[0] == '\0' || path
[1] != ':')
3680 drvtype
= GetDriveType (NULL
);
3687 drvtype
= GetDriveType (drive
);
3690 /* Only logon to networked drives. */
3691 if (drvtype
!= DRIVE_REMOTE
)
3695 strncpy (share
, path
, MAX_UTF8_PATH
);
3696 /* Truncate to just server and share name. */
3697 for (p
= share
+ 2; *p
&& p
< share
+ MAX_UTF8_PATH
; p
++)
3699 if (IS_DIRECTORY_SEP (*p
) && ++n_slashes
> 3)
3706 if (w32_unicode_filenames
)
3708 NETRESOURCEW resourcew
;
3709 wchar_t share_w
[MAX_PATH
];
3711 resourcew
.dwScope
= RESOURCE_GLOBALNET
;
3712 resourcew
.dwType
= RESOURCETYPE_DISK
;
3713 resourcew
.dwDisplayType
= RESOURCEDISPLAYTYPE_SHARE
;
3714 resourcew
.dwUsage
= RESOURCEUSAGE_CONTAINER
;
3715 resourcew
.lpLocalName
= NULL
;
3716 filename_to_utf16 (share
, share_w
);
3717 resourcew
.lpRemoteName
= share_w
;
3718 resourcew
.lpProvider
= NULL
;
3720 val
= WNetAddConnection2W (&resourcew
, NULL
, NULL
, CONNECT_INTERACTIVE
);
3724 NETRESOURCEA resourcea
;
3725 char share_a
[MAX_PATH
];
3727 resourcea
.dwScope
= RESOURCE_GLOBALNET
;
3728 resourcea
.dwType
= RESOURCETYPE_DISK
;
3729 resourcea
.dwDisplayType
= RESOURCEDISPLAYTYPE_SHARE
;
3730 resourcea
.dwUsage
= RESOURCEUSAGE_CONTAINER
;
3731 resourcea
.lpLocalName
= NULL
;
3732 filename_to_ansi (share
, share_a
);
3733 resourcea
.lpRemoteName
= share_a
;
3734 resourcea
.lpProvider
= NULL
;
3736 val
= WNetAddConnection2A (&resourcea
, NULL
, NULL
, CONNECT_INTERACTIVE
);
3742 case ERROR_ALREADY_ASSIGNED
:
3744 case ERROR_ACCESS_DENIED
:
3745 case ERROR_LOGON_FAILURE
:
3751 case ERROR_BAD_NET_NAME
:
3752 case ERROR_NO_NET_OR_BAD_PATH
:
3753 case ERROR_NO_NETWORK
:
3754 case ERROR_CANCELLED
:
3761 /* Emulate faccessat(2). */
3763 faccessat (int dirfd
, const char * path
, int mode
, int flags
)
3767 if (dirfd
!= AT_FDCWD
3768 && !(IS_DIRECTORY_SEP (path
[0])
3769 || IS_DEVICE_SEP (path
[1])))
3775 /* MSVCRT implementation of 'access' doesn't recognize D_OK, and its
3776 newer versions blow up when passed D_OK. */
3777 path
= map_w32_filename (path
, NULL
);
3778 /* If the last element of PATH is a symlink, we need to resolve it
3779 to get the attributes of its target file. Note: any symlinks in
3780 PATH elements other than the last one are transparently resolved
3781 by GetFileAttributes below. */
3782 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) != 0
3783 && (flags
& AT_SYMLINK_NOFOLLOW
) == 0)
3784 path
= chase_symlinks (path
);
3786 if (w32_unicode_filenames
)
3788 wchar_t path_w
[MAX_PATH
];
3790 filename_to_utf16 (path
, path_w
);
3791 attributes
= GetFileAttributesW (path_w
);
3795 char path_a
[MAX_PATH
];
3797 filename_to_ansi (path
, path_a
);
3798 attributes
= GetFileAttributesA (path_a
);
3801 if (attributes
== -1)
3803 DWORD w32err
= GetLastError ();
3807 case ERROR_INVALID_NAME
:
3808 case ERROR_BAD_PATHNAME
:
3809 if (is_unc_volume (path
))
3811 attributes
= unc_volume_file_attributes (path
);
3812 if (attributes
== -1)
3820 case ERROR_FILE_NOT_FOUND
:
3821 case ERROR_BAD_NETPATH
:
3830 if ((mode
& X_OK
) != 0
3831 && !(is_exec (path
) || (attributes
& FILE_ATTRIBUTE_DIRECTORY
) != 0))
3836 if ((mode
& W_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_READONLY
) != 0)
3841 if ((mode
& D_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
) == 0)
3849 /* A version of 'access' to be used locally with file names in
3850 locale-specific encoding. Does not resolve symlinks and does not
3851 support file names on FAT12 and FAT16 volumes, but that's OK, since
3852 we only invoke this function for files inside the Emacs source or
3853 installation tree, on directories (so any symlinks should have the
3854 directory bit set), and on short file names such as "C:/.emacs". */
3856 sys_access (const char *fname
, int mode
)
3858 char fname_copy
[MAX_PATH
], *p
;
3861 strcpy (fname_copy
, fname
);
3862 /* Do the equivalent of unixtodos_filename. */
3863 for (p
= fname_copy
; *p
; p
= CharNext (p
))
3867 if ((attributes
= GetFileAttributesA (fname_copy
)) == -1)
3869 DWORD w32err
= GetLastError ();
3873 case ERROR_INVALID_NAME
:
3874 case ERROR_BAD_PATHNAME
:
3875 case ERROR_FILE_NOT_FOUND
:
3876 case ERROR_BAD_NETPATH
:
3885 if ((mode
& X_OK
) != 0
3886 && !(is_exec (fname_copy
)
3887 || (attributes
& FILE_ATTRIBUTE_DIRECTORY
) != 0))
3892 if ((mode
& W_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_READONLY
) != 0)
3897 if ((mode
& D_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
) == 0)
3905 /* Shadow some MSVC runtime functions to map requests for long filenames
3906 to reasonable short names if necessary. This was originally added to
3907 permit running Emacs on NT 3.1 on a FAT partition, which doesn't support
3911 sys_chdir (const char * path
)
3913 path
= map_w32_filename (path
, NULL
);
3914 if (w32_unicode_filenames
)
3916 wchar_t newdir_w
[MAX_PATH
];
3918 if (filename_to_utf16 (path
, newdir_w
) == 0)
3919 return _wchdir (newdir_w
);
3924 char newdir_a
[MAX_PATH
];
3926 if (filename_to_ansi (path
, newdir_a
) == 0)
3927 return _chdir (newdir_a
);
3933 sys_chmod (const char * path
, int mode
)
3935 path
= chase_symlinks (map_w32_filename (path
, NULL
));
3936 if (w32_unicode_filenames
)
3938 wchar_t path_w
[MAX_PATH
];
3940 filename_to_utf16 (path
, path_w
);
3941 return _wchmod (path_w
, mode
);
3945 char path_a
[MAX_PATH
];
3947 filename_to_ansi (path
, path_a
);
3948 return _chmod (path_a
, mode
);
3953 sys_creat (const char * path
, int mode
)
3955 path
= map_w32_filename (path
, NULL
);
3956 if (w32_unicode_filenames
)
3958 wchar_t path_w
[MAX_PATH
];
3960 filename_to_utf16 (path
, path_w
);
3961 return _wcreat (path_w
, mode
);
3965 char path_a
[MAX_PATH
];
3967 filename_to_ansi (path
, path_a
);
3968 return _creat (path_a
, mode
);
3973 sys_fopen (const char * path
, const char * mode
)
3977 const char * mode_save
= mode
;
3979 /* Force all file handles to be non-inheritable. This is necessary to
3980 ensure child processes don't unwittingly inherit handles that might
3981 prevent future file access. */
3985 else if (mode
[0] == 'w' || mode
[0] == 'a')
3986 oflag
= O_WRONLY
| O_CREAT
| O_TRUNC
;
3990 /* Only do simplistic option parsing. */
3994 oflag
&= ~(O_RDONLY
| O_WRONLY
);
3997 else if (mode
[0] == 'b')
4002 else if (mode
[0] == 't')
4009 path
= map_w32_filename (path
, NULL
);
4010 if (w32_unicode_filenames
)
4012 wchar_t path_w
[MAX_PATH
];
4014 filename_to_utf16 (path
, path_w
);
4015 fd
= _wopen (path_w
, oflag
| _O_NOINHERIT
, 0644);
4019 char path_a
[MAX_PATH
];
4021 filename_to_ansi (path
, path_a
);
4022 fd
= _open (path_a
, oflag
| _O_NOINHERIT
, 0644);
4027 return _fdopen (fd
, mode_save
);
4030 /* This only works on NTFS volumes, but is useful to have. */
4032 sys_link (const char * old
, const char * new)
4036 char oldname
[MAX_UTF8_PATH
], newname
[MAX_UTF8_PATH
];
4037 wchar_t oldname_w
[MAX_PATH
];
4038 char oldname_a
[MAX_PATH
];
4040 if (old
== NULL
|| new == NULL
)
4046 strcpy (oldname
, map_w32_filename (old
, NULL
));
4047 strcpy (newname
, map_w32_filename (new, NULL
));
4049 if (w32_unicode_filenames
)
4051 filename_to_utf16 (oldname
, oldname_w
);
4052 fileh
= CreateFileW (oldname_w
, 0, 0, NULL
, OPEN_EXISTING
,
4053 FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
4057 filename_to_ansi (oldname
, oldname_a
);
4058 fileh
= CreateFileA (oldname_a
, 0, 0, NULL
, OPEN_EXISTING
,
4059 FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
4061 if (fileh
!= INVALID_HANDLE_VALUE
)
4065 /* Confusingly, the "alternate" stream name field does not apply
4066 when restoring a hard link, and instead contains the actual
4067 stream data for the link (ie. the name of the link to create).
4068 The WIN32_STREAM_ID structure before the cStreamName field is
4069 the stream header, which is then immediately followed by the
4073 WIN32_STREAM_ID wid
;
4074 WCHAR wbuffer
[MAX_PATH
]; /* extra space for link name */
4077 /* We used to pass MB_PRECOMPOSED as the 2nd arg here, but MSDN
4078 indicates that flag is unsupported for CP_UTF8, and OTOH says
4079 it is the default anyway. */
4080 wlen
= pMultiByteToWideChar (CP_UTF8
, 0, newname
, -1,
4081 data
.wid
.cStreamName
, MAX_PATH
);
4084 LPVOID context
= NULL
;
4087 data
.wid
.dwStreamId
= BACKUP_LINK
;
4088 data
.wid
.dwStreamAttributes
= 0;
4089 data
.wid
.Size
.LowPart
= wlen
* sizeof (WCHAR
);
4090 data
.wid
.Size
.HighPart
= 0;
4091 data
.wid
.dwStreamNameSize
= 0;
4093 if (BackupWrite (fileh
, (LPBYTE
)&data
,
4094 offsetof (WIN32_STREAM_ID
, cStreamName
)
4095 + data
.wid
.Size
.LowPart
,
4096 &wbytes
, FALSE
, FALSE
, &context
)
4097 && BackupWrite (fileh
, NULL
, 0, &wbytes
, TRUE
, FALSE
, &context
))
4104 DWORD err
= GetLastError ();
4109 case ERROR_ACCESS_DENIED
:
4110 /* This is what happens when OLDNAME is a directory,
4111 since Windows doesn't support hard links to
4112 directories. Posix says to set errno to EPERM in
4114 if (w32_unicode_filenames
)
4115 attributes
= GetFileAttributesW (oldname_w
);
4117 attributes
= GetFileAttributesA (oldname_a
);
4118 if (attributes
!= -1
4119 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
) != 0)
4121 else if (attributes
== -1
4122 && is_unc_volume (oldname
)
4123 && unc_volume_file_attributes (oldname
) != -1)
4128 case ERROR_TOO_MANY_LINKS
:
4131 case ERROR_NOT_SAME_DEVICE
:
4141 CloseHandle (fileh
);
4150 sys_mkdir (const char * path
)
4152 path
= map_w32_filename (path
, NULL
);
4154 if (w32_unicode_filenames
)
4156 wchar_t path_w
[MAX_PATH
];
4158 filename_to_utf16 (path
, path_w
);
4159 return _wmkdir (path_w
);
4163 char path_a
[MAX_PATH
];
4165 filename_to_ansi (path
, path_a
);
4166 return _mkdir (path_a
);
4171 sys_open (const char * path
, int oflag
, int mode
)
4173 const char* mpath
= map_w32_filename (path
, NULL
);
4176 if (w32_unicode_filenames
)
4178 wchar_t mpath_w
[MAX_PATH
];
4180 filename_to_utf16 (mpath
, mpath_w
);
4181 /* If possible, try to open file without _O_CREAT, to be able to
4182 write to existing hidden and system files. Force all file
4183 handles to be non-inheritable. */
4184 if ((oflag
& (_O_CREAT
| _O_EXCL
)) != (_O_CREAT
| _O_EXCL
))
4185 res
= _wopen (mpath_w
, (oflag
& ~_O_CREAT
) | _O_NOINHERIT
, mode
);
4187 res
= _wopen (mpath_w
, oflag
| _O_NOINHERIT
, mode
);
4191 char mpath_a
[MAX_PATH
];
4193 filename_to_ansi (mpath
, mpath_a
);
4194 if ((oflag
& (_O_CREAT
| _O_EXCL
)) != (_O_CREAT
| _O_EXCL
))
4195 res
= _open (mpath_a
, (oflag
& ~_O_CREAT
) | _O_NOINHERIT
, mode
);
4197 res
= _open (mpath_a
, oflag
| _O_NOINHERIT
, mode
);
4203 /* Implementation of mkostemp for MS-Windows, to avoid race conditions
4206 Standard algorithm for generating a temporary file name seems to be
4207 use pid or tid with a letter on the front (in place of the 6 X's)
4208 and cycle through the letters to find a unique name. We extend
4209 that to allow any reasonable character as the first of the 6 X's,
4210 so that the number of simultaneously used temporary files will be
4214 mkostemp (char * template, int flags
)
4218 unsigned uid
= GetCurrentThreadId ();
4219 int save_errno
= errno
;
4220 static char first_char
[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#";
4223 if (template == NULL
)
4226 p
= template + strlen (template);
4228 /* replace up to the last 5 X's with uid in decimal */
4229 while (--p
>= template && p
[0] == 'X' && --i
>= 0)
4231 p
[0] = '0' + uid
% 10;
4235 if (i
< 0 && p
[0] == 'X')
4240 p
[0] = first_char
[i
];
4241 if ((fd
= sys_open (template,
4242 flags
| _O_CREAT
| _O_EXCL
| _O_RDWR
,
4243 S_IRUSR
| S_IWUSR
)) >= 0
4251 while (++i
< sizeof (first_char
));
4254 /* Template is badly formed or else we can't generate a unique name. */
4259 fchmod (int fd
, mode_t mode
)
4265 sys_rename_replace (const char *oldname
, const char *newname
, BOOL force
)
4268 char temp
[MAX_UTF8_PATH
], temp_a
[MAX_PATH
];;
4271 bool have_temp_a
= false;
4273 /* MoveFile on Windows 95 doesn't correctly change the short file name
4274 alias in a number of circumstances (it is not easy to predict when
4275 just by looking at oldname and newname, unfortunately). In these
4276 cases, renaming through a temporary name avoids the problem.
4278 A second problem on Windows 95 is that renaming through a temp name when
4279 newname is uppercase fails (the final long name ends up in
4280 lowercase, although the short alias might be uppercase) UNLESS the
4281 long temp name is not 8.3.
4283 So, on Windows 95 we always rename through a temp name, and we make sure
4284 the temp name has a long extension to ensure correct renaming. */
4286 strcpy (temp
, map_w32_filename (oldname
, NULL
));
4288 /* volume_info is set indirectly by map_w32_filename. */
4289 oldname_dev
= volume_info
.serialnum
;
4291 if (os_subtype
== OS_9X
)
4296 char oldname_a
[MAX_PATH
];
4298 oldname
= map_w32_filename (oldname
, NULL
);
4299 filename_to_ansi (oldname
, oldname_a
);
4300 filename_to_ansi (temp
, temp_a
);
4301 if ((o
= strrchr (oldname_a
, '\\')))
4304 o
= (char *) oldname_a
;
4306 if ((p
= strrchr (temp_a
, '\\')))
4313 /* Force temp name to require a manufactured 8.3 alias - this
4314 seems to make the second rename work properly. */
4315 sprintf (p
, "_.%s.%u", o
, i
);
4317 result
= rename (oldname_a
, temp_a
);
4319 /* This loop must surely terminate! */
4320 while (result
< 0 && errno
== EEXIST
);
4326 /* If FORCE, emulate Unix behavior - newname is deleted if it already exists
4327 (at least if it is a file; don't do this for directories).
4329 Since we mustn't do this if we are just changing the case of the
4330 file name (we would end up deleting the file we are trying to
4331 rename!), we let rename detect if the destination file already
4332 exists - that way we avoid the possible pitfalls of trying to
4333 determine ourselves whether two names really refer to the same
4334 file, which is not always possible in the general case. (Consider
4335 all the permutations of shared or subst'd drives, etc.) */
4337 newname
= map_w32_filename (newname
, NULL
);
4339 /* volume_info is set indirectly by map_w32_filename. */
4340 newname_dev
= volume_info
.serialnum
;
4342 if (w32_unicode_filenames
)
4344 wchar_t temp_w
[MAX_PATH
], newname_w
[MAX_PATH
];
4346 filename_to_utf16 (temp
, temp_w
);
4347 filename_to_utf16 (newname
, newname_w
);
4348 result
= _wrename (temp_w
, newname_w
);
4349 if (result
< 0 && force
)
4351 DWORD w32err
= GetLastError ();
4354 && newname_dev
!= oldname_dev
)
4356 /* The implementation of `rename' on Windows does not return
4357 errno = EXDEV when you are moving a directory to a
4358 different storage device (ex. logical disk). It returns
4359 EACCES instead. So here we handle such situations and
4363 if ((attributes
= GetFileAttributesW (temp_w
)) != -1
4364 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
))
4367 else if (errno
== EEXIST
)
4369 if (_wchmod (newname_w
, 0666) != 0)
4371 if (_wunlink (newname_w
) != 0)
4373 result
= _wrename (temp_w
, newname_w
);
4375 else if (w32err
== ERROR_PRIVILEGE_NOT_HELD
4376 && is_symlink (temp
))
4378 /* This is Windows prohibiting the user from creating a
4379 symlink in another place, since that requires
4387 char newname_a
[MAX_PATH
];
4390 filename_to_ansi (temp
, temp_a
);
4391 filename_to_ansi (newname
, newname_a
);
4392 result
= rename (temp_a
, newname_a
);
4393 if (result
< 0 && force
)
4395 DWORD w32err
= GetLastError ();
4398 && newname_dev
!= oldname_dev
)
4402 if ((attributes
= GetFileAttributesA (temp_a
)) != -1
4403 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
))
4406 else if (errno
== EEXIST
)
4408 if (_chmod (newname_a
, 0666) != 0)
4410 if (_unlink (newname_a
) != 0)
4412 result
= rename (temp_a
, newname_a
);
4414 else if (w32err
== ERROR_PRIVILEGE_NOT_HELD
4415 && is_symlink (temp
))
4424 sys_rename (char const *old
, char const *new)
4426 return sys_rename_replace (old
, new, TRUE
);
4430 sys_rmdir (const char * path
)
4432 path
= map_w32_filename (path
, NULL
);
4434 if (w32_unicode_filenames
)
4436 wchar_t path_w
[MAX_PATH
];
4438 filename_to_utf16 (path
, path_w
);
4439 return _wrmdir (path_w
);
4443 char path_a
[MAX_PATH
];
4445 filename_to_ansi (path
, path_a
);
4446 return _rmdir (path_a
);
4451 sys_unlink (const char * path
)
4453 path
= map_w32_filename (path
, NULL
);
4455 if (w32_unicode_filenames
)
4457 wchar_t path_w
[MAX_PATH
];
4459 filename_to_utf16 (path
, path_w
);
4460 /* On Unix, unlink works without write permission. */
4461 _wchmod (path_w
, 0666);
4462 return _wunlink (path_w
);
4466 char path_a
[MAX_PATH
];
4468 filename_to_ansi (path
, path_a
);
4469 _chmod (path_a
, 0666);
4470 return _unlink (path_a
);
4474 static FILETIME utc_base_ft
;
4475 static ULONGLONG utc_base
; /* In 100ns units */
4476 static int init
= 0;
4478 #define FILETIME_TO_U64(result, ft) \
4480 ULARGE_INTEGER uiTemp; \
4481 uiTemp.LowPart = (ft).dwLowDateTime; \
4482 uiTemp.HighPart = (ft).dwHighDateTime; \
4483 result = uiTemp.QuadPart; \
4487 initialize_utc_base (void)
4489 /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */
4498 st
.wMilliseconds
= 0;
4500 SystemTimeToFileTime (&st
, &utc_base_ft
);
4501 FILETIME_TO_U64 (utc_base
, utc_base_ft
);
4505 convert_time (FILETIME ft
)
4511 initialize_utc_base ();
4515 if (CompareFileTime (&ft
, &utc_base_ft
) < 0)
4518 FILETIME_TO_U64 (tmp
, ft
);
4519 return (time_t) ((tmp
- utc_base
) / 10000000L);
4523 convert_from_time_t (time_t time
, FILETIME
* pft
)
4529 initialize_utc_base ();
4533 /* time in 100ns units since 1-Jan-1601 */
4534 tmp
.QuadPart
= (ULONGLONG
) time
* 10000000L + utc_base
;
4535 pft
->dwHighDateTime
= tmp
.HighPart
;
4536 pft
->dwLowDateTime
= tmp
.LowPart
;
4539 static PSECURITY_DESCRIPTOR
4540 get_file_security_desc_by_handle (HANDLE h
)
4542 PSECURITY_DESCRIPTOR psd
= NULL
;
4544 SECURITY_INFORMATION si
= OWNER_SECURITY_INFORMATION
4545 | GROUP_SECURITY_INFORMATION
/* | DACL_SECURITY_INFORMATION */ ;
4547 err
= get_security_info (h
, SE_FILE_OBJECT
, si
,
4548 NULL
, NULL
, NULL
, NULL
, &psd
);
4549 if (err
!= ERROR_SUCCESS
)
4555 static PSECURITY_DESCRIPTOR
4556 get_file_security_desc_by_name (const char *fname
)
4558 PSECURITY_DESCRIPTOR psd
= NULL
;
4560 SECURITY_INFORMATION si
= OWNER_SECURITY_INFORMATION
4561 | GROUP_SECURITY_INFORMATION
/* | DACL_SECURITY_INFORMATION */ ;
4563 if (!get_file_security (fname
, si
, psd
, 0, &sd_len
))
4565 err
= GetLastError ();
4566 if (err
!= ERROR_INSUFFICIENT_BUFFER
)
4570 psd
= xmalloc (sd_len
);
4571 if (!get_file_security (fname
, si
, psd
, sd_len
, &sd_len
))
4583 unsigned n_subauthorities
;
4585 /* Use the last sub-authority value of the RID, the relative
4586 portion of the SID, as user/group ID. */
4587 n_subauthorities
= *get_sid_sub_authority_count (sid
);
4588 if (n_subauthorities
< 1)
4589 return 0; /* the "World" RID */
4590 return *get_sid_sub_authority (sid
, n_subauthorities
- 1);
4593 /* Caching SID and account values for faster lokup. */
4597 struct w32_id
*next
;
4599 unsigned char sid
[FLEXIBLE_ARRAY_MEMBER
];
4602 static struct w32_id
*w32_idlist
;
4605 w32_cached_id (PSID sid
, unsigned *id
, char *name
)
4607 struct w32_id
*tail
, *found
;
4609 for (found
= NULL
, tail
= w32_idlist
; tail
; tail
= tail
->next
)
4611 if (equal_sid ((PSID
)tail
->sid
, sid
))
4620 strcpy (name
, found
->name
);
4628 w32_add_to_cache (PSID sid
, unsigned id
, char *name
)
4631 struct w32_id
*new_entry
;
4633 /* We don't want to leave behind stale cache from when Emacs was
4637 sid_len
= get_length_sid (sid
);
4638 new_entry
= xmalloc (offsetof (struct w32_id
, sid
) + sid_len
);
4641 new_entry
->rid
= id
;
4642 strcpy (new_entry
->name
, name
);
4643 copy_sid (sid_len
, (PSID
)new_entry
->sid
, sid
);
4644 new_entry
->next
= w32_idlist
;
4645 w32_idlist
= new_entry
;
4654 get_name_and_id (PSECURITY_DESCRIPTOR psd
, unsigned *id
, char *nm
, int what
)
4658 SID_NAME_USE ignore
;
4660 DWORD name_len
= sizeof (name
);
4662 DWORD domain_len
= sizeof (domain
);
4667 result
= get_security_descriptor_owner (psd
, &sid
, &dflt
);
4668 else if (what
== GID
)
4669 result
= get_security_descriptor_group (psd
, &sid
, &dflt
);
4673 if (!result
|| !is_valid_sid (sid
))
4675 else if (!w32_cached_id (sid
, id
, nm
))
4677 if (!lookup_account_sid (NULL
, sid
, name
, &name_len
,
4678 domain
, &domain_len
, &ignore
)
4679 || name_len
> UNLEN
+1)
4683 *id
= get_rid (sid
);
4685 w32_add_to_cache (sid
, *id
, name
);
4692 get_file_owner_and_group (PSECURITY_DESCRIPTOR psd
, struct stat
*st
)
4694 int dflt_usr
= 0, dflt_grp
= 0;
4703 if (get_name_and_id (psd
, &st
->st_uid
, st
->st_uname
, UID
))
4705 if (get_name_and_id (psd
, &st
->st_gid
, st
->st_gname
, GID
))
4708 /* Consider files to belong to current user/group, if we cannot get
4709 more accurate information. */
4712 st
->st_uid
= dflt_passwd
.pw_uid
;
4713 strcpy (st
->st_uname
, dflt_passwd
.pw_name
);
4717 st
->st_gid
= dflt_passwd
.pw_gid
;
4718 strcpy (st
->st_gname
, dflt_group
.gr_name
);
4722 /* Return non-zero if NAME is a potentially slow filesystem. */
4724 is_slow_fs (const char *name
)
4729 if (IS_DIRECTORY_SEP (name
[0]) && IS_DIRECTORY_SEP (name
[1]))
4730 devtype
= DRIVE_REMOTE
; /* assume UNC name is remote */
4731 else if (!(strlen (name
) >= 2 && IS_DEVICE_SEP (name
[1])))
4732 devtype
= GetDriveType (NULL
); /* use root of current drive */
4735 /* GetDriveType needs the root directory of the drive. */
4736 strncpy (drive_root
, name
, 2);
4737 drive_root
[2] = '\\';
4738 drive_root
[3] = '\0';
4739 devtype
= GetDriveType (drive_root
);
4741 return !(devtype
== DRIVE_FIXED
|| devtype
== DRIVE_RAMDISK
);
4744 /* If this is non-zero, the caller wants accurate information about
4745 file's owner and group, which could be expensive to get. dired.c
4746 uses this flag when needed for the job at hand. */
4747 int w32_stat_get_owner_group
;
4749 /* MSVC stat function can't cope with UNC names and has other bugs, so
4750 replace it with our own. This also allows us to calculate consistent
4751 inode values and owner/group without hacks in the main Emacs code,
4752 and support file names encoded in UTF-8. */
4755 stat_worker (const char * path
, struct stat
* buf
, int follow_symlinks
)
4757 char *name
, *save_name
, *r
;
4758 WIN32_FIND_DATAW wfd_w
;
4759 WIN32_FIND_DATAA wfd_a
;
4761 unsigned __int64 fake_inode
= 0;
4764 int rootdir
= FALSE
;
4765 PSECURITY_DESCRIPTOR psd
= NULL
;
4766 int is_a_symlink
= 0;
4767 DWORD file_flags
= FILE_FLAG_BACKUP_SEMANTICS
;
4768 DWORD access_rights
= 0;
4769 DWORD fattrs
= 0, serialnum
= 0, fs_high
= 0, fs_low
= 0, nlinks
= 1;
4770 FILETIME ctime
, atime
, wtime
;
4771 wchar_t name_w
[MAX_PATH
];
4772 char name_a
[MAX_PATH
];
4774 if (path
== NULL
|| buf
== NULL
)
4780 save_name
= name
= (char *) map_w32_filename (path
, &path
);
4781 /* Must be valid filename, no wild cards or other invalid
4783 if (strpbrk (name
, "*?|<>\""))
4789 len
= strlen (name
);
4790 /* Allocate 1 extra byte so that we could append a slash to a root
4791 directory, down below. */
4792 name
= strcpy (alloca (len
+ 2), name
);
4794 /* Avoid a somewhat costly call to is_symlink if the filesystem
4795 doesn't support symlinks. */
4796 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) != 0)
4797 is_a_symlink
= is_symlink (name
);
4799 /* Plan A: Open the file and get all the necessary information via
4800 the resulting handle. This solves several issues in one blow:
4802 . retrieves attributes for the target of a symlink, if needed
4803 . gets attributes of root directories and symlinks pointing to
4804 root directories, thus avoiding the need for special-casing
4805 these and detecting them by examining the file-name format
4806 . retrieves more accurate attributes (e.g., non-zero size for
4807 some directories, esp. directories that are junction points)
4808 . correctly resolves "c:/..", "/.." and similar file names
4809 . avoids run-time penalties for 99% of use cases
4811 Plan A is always tried first, unless the user asked not to (but
4812 if the file is a symlink and we need to follow links, we try Plan
4813 A even if the user asked not to).
4815 If Plan A fails, we go to Plan B (below), where various
4816 potentially expensive techniques must be used to handle "special"
4817 files such as UNC volumes etc. */
4818 if (!(NILP (Vw32_get_true_file_attributes
)
4819 || (EQ (Vw32_get_true_file_attributes
, Qlocal
) && is_slow_fs (name
)))
4820 /* Following symlinks requires getting the info by handle. */
4821 || (is_a_symlink
&& follow_symlinks
))
4823 BY_HANDLE_FILE_INFORMATION info
;
4825 if (is_a_symlink
&& !follow_symlinks
)
4826 file_flags
|= FILE_FLAG_OPEN_REPARSE_POINT
;
4827 /* READ_CONTROL access rights are required to get security info
4828 by handle. But if the OS doesn't support security in the
4829 first place, we don't need to try. */
4830 if (is_windows_9x () != TRUE
)
4831 access_rights
|= READ_CONTROL
;
4833 if (w32_unicode_filenames
)
4835 filename_to_utf16 (name
, name_w
);
4836 fh
= CreateFileW (name_w
, access_rights
, 0, NULL
, OPEN_EXISTING
,
4838 /* If CreateFile fails with READ_CONTROL, try again with
4839 zero as access rights. */
4840 if (fh
== INVALID_HANDLE_VALUE
&& access_rights
)
4841 fh
= CreateFileW (name_w
, 0, 0, NULL
, OPEN_EXISTING
,
4846 filename_to_ansi (name
, name_a
);
4847 fh
= CreateFileA (name_a
, access_rights
, 0, NULL
, OPEN_EXISTING
,
4849 if (fh
== INVALID_HANDLE_VALUE
&& access_rights
)
4850 fh
= CreateFileA (name_a
, 0, 0, NULL
, OPEN_EXISTING
,
4853 if (fh
== INVALID_HANDLE_VALUE
)
4854 goto no_true_file_attributes
;
4856 /* This is more accurate in terms of getting the correct number
4857 of links, but is quite slow (it is noticeable when Emacs is
4858 making a list of file name completions). */
4859 if (GetFileInformationByHandle (fh
, &info
))
4861 nlinks
= info
.nNumberOfLinks
;
4862 /* Might as well use file index to fake inode values, but this
4863 is not guaranteed to be unique unless we keep a handle open
4864 all the time (even then there are situations where it is
4865 not unique). Reputedly, there are at most 48 bits of info
4866 (on NTFS, presumably less on FAT). */
4867 fake_inode
= info
.nFileIndexHigh
;
4869 fake_inode
+= info
.nFileIndexLow
;
4870 serialnum
= info
.dwVolumeSerialNumber
;
4871 fs_high
= info
.nFileSizeHigh
;
4872 fs_low
= info
.nFileSizeLow
;
4873 ctime
= info
.ftCreationTime
;
4874 atime
= info
.ftLastAccessTime
;
4875 wtime
= info
.ftLastWriteTime
;
4876 fattrs
= info
.dwFileAttributes
;
4880 /* We don't go to Plan B here, because it's not clear that
4881 it's a good idea. The only known use case where
4882 CreateFile succeeds, but GetFileInformationByHandle fails
4883 (with ERROR_INVALID_FUNCTION) is for character devices
4884 such as NUL, PRN, etc. For these, switching to Plan B is
4885 a net loss, because we lose the character device
4886 attribute returned by GetFileType below (FindFirstFile
4887 doesn't set that bit in the attributes), and the other
4888 fields don't make sense for character devices anyway.
4889 Emacs doesn't really care for non-file entities in the
4890 context of l?stat, so neither do we. */
4892 /* w32err is assigned so one could put a breakpoint here and
4893 examine its value, when GetFileInformationByHandle
4895 DWORD w32err
= GetLastError ();
4899 case ERROR_FILE_NOT_FOUND
: /* can this ever happen? */
4905 /* Test for a symlink before testing for a directory, since
4906 symlinks to directories have the directory bit set, but we
4907 don't want them to appear as directories. */
4908 if (is_a_symlink
&& !follow_symlinks
)
4909 buf
->st_mode
= S_IFLNK
;
4910 else if (fattrs
& FILE_ATTRIBUTE_DIRECTORY
)
4911 buf
->st_mode
= S_IFDIR
;
4914 DWORD ftype
= GetFileType (fh
);
4918 case FILE_TYPE_DISK
:
4919 buf
->st_mode
= S_IFREG
;
4921 case FILE_TYPE_PIPE
:
4922 buf
->st_mode
= S_IFIFO
;
4924 case FILE_TYPE_CHAR
:
4925 case FILE_TYPE_UNKNOWN
:
4927 buf
->st_mode
= S_IFCHR
;
4930 /* We produce the fallback owner and group data, based on the
4931 current user that runs Emacs, in the following cases:
4933 . caller didn't request owner and group info
4934 . this is Windows 9X
4935 . getting security by handle failed, and we need to produce
4936 information for the target of a symlink (this is better
4937 than producing a potentially misleading info about the
4940 If getting security by handle fails, and we don't need to
4941 resolve symlinks, we try getting security by name. */
4942 if (!w32_stat_get_owner_group
|| is_windows_9x () == TRUE
)
4943 get_file_owner_and_group (NULL
, buf
);
4946 psd
= get_file_security_desc_by_handle (fh
);
4949 get_file_owner_and_group (psd
, buf
);
4952 else if (!(is_a_symlink
&& follow_symlinks
))
4954 psd
= get_file_security_desc_by_name (name
);
4955 get_file_owner_and_group (psd
, buf
);
4959 get_file_owner_and_group (NULL
, buf
);
4965 no_true_file_attributes
:
4966 /* Plan B: Either getting a handle on the file failed, or the
4967 caller explicitly asked us to not bother making this
4968 information more accurate.
4970 Implementation note: In Plan B, we never bother to resolve
4971 symlinks, even if we got here because we tried Plan A and
4972 failed. That's because, even if the caller asked for extra
4973 precision by setting Vw32_get_true_file_attributes to t,
4974 resolving symlinks requires acquiring a file handle to the
4975 symlink, which we already know will fail. And if the user
4976 did not ask for extra precision, resolving symlinks will fly
4977 in the face of that request, since the user then wants the
4978 lightweight version of the code. */
4979 rootdir
= (path
>= save_name
+ len
- 1
4980 && (IS_DIRECTORY_SEP (*path
) || *path
== 0));
4982 /* If name is "c:/.." or "/.." then stat "c:/" or "/". */
4983 r
= IS_DEVICE_SEP (name
[1]) ? &name
[2] : name
;
4984 if (IS_DIRECTORY_SEP (r
[0])
4985 && r
[1] == '.' && r
[2] == '.' && r
[3] == '\0')
4988 /* Note: If NAME is a symlink to the root of a UNC volume
4989 (i.e. "\\SERVER"), we will not detect that here, and we will
4990 return data about the symlink as result of FindFirst below.
4991 This is unfortunate, but that marginal use case does not
4992 justify a call to chase_symlinks which would impose a penalty
4993 on all the other use cases. (We get here for symlinks to
4994 roots of UNC volumes because CreateFile above fails for them,
4995 unlike with symlinks to root directories X:\ of drives.) */
4996 if (is_unc_volume (name
))
4998 fattrs
= unc_volume_file_attributes (name
);
5002 ctime
= atime
= wtime
= utc_base_ft
;
5006 /* Make sure root directories end in a slash. */
5007 if (!IS_DIRECTORY_SEP (name
[len
-1]))
5008 strcpy (name
+ len
, "\\");
5009 if (GetDriveType (name
) < 2)
5015 fattrs
= FILE_ATTRIBUTE_DIRECTORY
;
5016 ctime
= atime
= wtime
= utc_base_ft
;
5022 /* Make sure non-root directories do NOT end in a slash,
5023 otherwise FindFirstFile might fail. */
5024 if (IS_DIRECTORY_SEP (name
[len
-1]))
5027 /* (This is hacky, but helps when doing file completions on
5028 network drives.) Optimize by using information available from
5029 active readdir if possible. */
5030 len
= strlen (dir_pathname
);
5031 if (IS_DIRECTORY_SEP (dir_pathname
[len
-1]))
5033 if (dir_find_handle
!= INVALID_HANDLE_VALUE
5034 && last_dir_find_data
!= -1
5035 && !(is_a_symlink
&& follow_symlinks
)
5036 /* The 2 file-name comparisons below support only ASCII
5037 characters, and will lose (compare not equal) when
5038 the file names include non-ASCII characters that are
5039 the same but for the case. However, doing this
5040 properly involves: (a) converting both file names to
5041 UTF-16, (b) lower-casing both names using CharLowerW,
5042 and (c) comparing the results; this would be quite a
5043 bit slower, whereas Plan B is for users who want
5044 lightweight albeit inaccurate version of 'stat'. */
5045 && c_strncasecmp (save_name
, dir_pathname
, len
) == 0
5046 && IS_DIRECTORY_SEP (name
[len
])
5047 && xstrcasecmp (name
+ len
+ 1, dir_static
.d_name
) == 0)
5049 have_wfd
= last_dir_find_data
;
5050 /* This was the last entry returned by readdir. */
5051 if (last_dir_find_data
== DIR_FIND_DATA_W
)
5052 wfd_w
= dir_find_data_w
;
5054 wfd_a
= dir_find_data_a
;
5058 logon_network_drive (name
);
5060 if (w32_unicode_filenames
)
5062 filename_to_utf16 (name
, name_w
);
5063 fh
= FindFirstFileW (name_w
, &wfd_w
);
5064 have_wfd
= DIR_FIND_DATA_W
;
5068 filename_to_ansi (name
, name_a
);
5069 /* If NAME includes characters not representable by
5070 the current ANSI codepage, filename_to_ansi
5071 usually replaces them with a '?'. We don't want
5072 to let FindFirstFileA interpret those as wildcards,
5073 and "succeed", returning us data from some random
5074 file in the same directory. */
5075 if (_mbspbrk (name_a
, "?"))
5076 fh
= INVALID_HANDLE_VALUE
;
5078 fh
= FindFirstFileA (name_a
, &wfd_a
);
5079 have_wfd
= DIR_FIND_DATA_A
;
5081 if (fh
== INVALID_HANDLE_VALUE
)
5088 /* Note: if NAME is a symlink, the information we get from
5089 FindFirstFile is for the symlink, not its target. */
5090 if (have_wfd
== DIR_FIND_DATA_W
)
5092 fattrs
= wfd_w
.dwFileAttributes
;
5093 ctime
= wfd_w
.ftCreationTime
;
5094 atime
= wfd_w
.ftLastAccessTime
;
5095 wtime
= wfd_w
.ftLastWriteTime
;
5096 fs_high
= wfd_w
.nFileSizeHigh
;
5097 fs_low
= wfd_w
.nFileSizeLow
;
5101 fattrs
= wfd_a
.dwFileAttributes
;
5102 ctime
= wfd_a
.ftCreationTime
;
5103 atime
= wfd_a
.ftLastAccessTime
;
5104 wtime
= wfd_a
.ftLastWriteTime
;
5105 fs_high
= wfd_a
.nFileSizeHigh
;
5106 fs_low
= wfd_a
.nFileSizeLow
;
5110 serialnum
= volume_info
.serialnum
;
5112 if (is_a_symlink
&& !follow_symlinks
)
5113 buf
->st_mode
= S_IFLNK
;
5114 else if (fattrs
& FILE_ATTRIBUTE_DIRECTORY
)
5115 buf
->st_mode
= S_IFDIR
;
5117 buf
->st_mode
= S_IFREG
;
5119 get_file_owner_and_group (NULL
, buf
);
5122 buf
->st_ino
= fake_inode
;
5124 buf
->st_dev
= serialnum
;
5125 buf
->st_rdev
= serialnum
;
5127 buf
->st_size
= fs_high
;
5128 buf
->st_size
<<= 32;
5129 buf
->st_size
+= fs_low
;
5130 buf
->st_nlink
= nlinks
;
5132 /* Convert timestamps to Unix format. */
5133 buf
->st_mtime
= convert_time (wtime
);
5134 buf
->st_atime
= convert_time (atime
);
5135 if (buf
->st_atime
== 0) buf
->st_atime
= buf
->st_mtime
;
5136 buf
->st_ctime
= convert_time (ctime
);
5137 if (buf
->st_ctime
== 0) buf
->st_ctime
= buf
->st_mtime
;
5139 /* determine rwx permissions */
5140 if (is_a_symlink
&& !follow_symlinks
)
5141 permission
= S_IREAD
| S_IWRITE
| S_IEXEC
; /* Posix expectations */
5144 if (fattrs
& FILE_ATTRIBUTE_READONLY
)
5145 permission
= S_IREAD
;
5147 permission
= S_IREAD
| S_IWRITE
;
5149 if (fattrs
& FILE_ATTRIBUTE_DIRECTORY
)
5150 permission
|= S_IEXEC
;
5151 else if (is_exec (name
))
5152 permission
|= S_IEXEC
;
5155 buf
->st_mode
|= permission
| (permission
>> 3) | (permission
>> 6);
5161 stat (const char * path
, struct stat
* buf
)
5163 return stat_worker (path
, buf
, 1);
5167 lstat (const char * path
, struct stat
* buf
)
5169 return stat_worker (path
, buf
, 0);
5173 fstatat (int fd
, char const *name
, struct stat
*st
, int flags
)
5175 /* Rely on a hack: an open directory is modeled as file descriptor 0.
5176 This is good enough for the current usage in Emacs, but is fragile.
5178 FIXME: Add proper support for fdopendir, fstatat, readlinkat.
5179 Gnulib does this and can serve as a model. */
5180 char fullname
[MAX_UTF8_PATH
];
5184 char lastc
= dir_pathname
[strlen (dir_pathname
) - 1];
5186 if (_snprintf (fullname
, sizeof fullname
, "%s%s%s",
5187 dir_pathname
, IS_DIRECTORY_SEP (lastc
) ? "" : "/", name
)
5190 errno
= ENAMETOOLONG
;
5196 return stat_worker (name
, st
, ! (flags
& AT_SYMLINK_NOFOLLOW
));
5199 /* Provide fstat and utime as well as stat for consistent handling of
5202 fstat (int desc
, struct stat
* buf
)
5204 HANDLE fh
= (HANDLE
) _get_osfhandle (desc
);
5205 BY_HANDLE_FILE_INFORMATION info
;
5206 unsigned __int64 fake_inode
;
5209 switch (GetFileType (fh
) & ~FILE_TYPE_REMOTE
)
5211 case FILE_TYPE_DISK
:
5212 buf
->st_mode
= S_IFREG
;
5213 if (!GetFileInformationByHandle (fh
, &info
))
5219 case FILE_TYPE_PIPE
:
5220 buf
->st_mode
= S_IFIFO
;
5222 case FILE_TYPE_CHAR
:
5223 case FILE_TYPE_UNKNOWN
:
5225 buf
->st_mode
= S_IFCHR
;
5227 memset (&info
, 0, sizeof (info
));
5228 info
.dwFileAttributes
= 0;
5229 info
.ftCreationTime
= utc_base_ft
;
5230 info
.ftLastAccessTime
= utc_base_ft
;
5231 info
.ftLastWriteTime
= utc_base_ft
;
5234 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_DIRECTORY
)
5235 buf
->st_mode
= S_IFDIR
;
5237 buf
->st_nlink
= info
.nNumberOfLinks
;
5238 /* Might as well use file index to fake inode values, but this
5239 is not guaranteed to be unique unless we keep a handle open
5240 all the time (even then there are situations where it is
5241 not unique). Reputedly, there are at most 48 bits of info
5242 (on NTFS, presumably less on FAT). */
5243 fake_inode
= info
.nFileIndexHigh
;
5245 fake_inode
+= info
.nFileIndexLow
;
5247 /* MSVC defines _ino_t to be short; other libc's might not. */
5248 if (sizeof (buf
->st_ino
) == 2)
5249 buf
->st_ino
= fake_inode
^ (fake_inode
>> 16);
5251 buf
->st_ino
= fake_inode
;
5253 /* If the caller so requested, get the true file owner and group.
5254 Otherwise, consider the file to belong to the current user. */
5255 if (!w32_stat_get_owner_group
|| is_windows_9x () == TRUE
)
5256 get_file_owner_and_group (NULL
, buf
);
5259 PSECURITY_DESCRIPTOR psd
= NULL
;
5261 psd
= get_file_security_desc_by_handle (fh
);
5264 get_file_owner_and_group (psd
, buf
);
5268 get_file_owner_and_group (NULL
, buf
);
5271 buf
->st_dev
= info
.dwVolumeSerialNumber
;
5272 buf
->st_rdev
= info
.dwVolumeSerialNumber
;
5274 buf
->st_size
= info
.nFileSizeHigh
;
5275 buf
->st_size
<<= 32;
5276 buf
->st_size
+= info
.nFileSizeLow
;
5278 /* Convert timestamps to Unix format. */
5279 buf
->st_mtime
= convert_time (info
.ftLastWriteTime
);
5280 buf
->st_atime
= convert_time (info
.ftLastAccessTime
);
5281 if (buf
->st_atime
== 0) buf
->st_atime
= buf
->st_mtime
;
5282 buf
->st_ctime
= convert_time (info
.ftCreationTime
);
5283 if (buf
->st_ctime
== 0) buf
->st_ctime
= buf
->st_mtime
;
5285 /* determine rwx permissions */
5286 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_READONLY
)
5287 permission
= S_IREAD
;
5289 permission
= S_IREAD
| S_IWRITE
;
5291 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_DIRECTORY
)
5292 permission
|= S_IEXEC
;
5295 #if 0 /* no way of knowing the filename */
5296 char * p
= strrchr (name
, '.');
5298 (xstrcasecmp (p
, ".exe") == 0 ||
5299 xstrcasecmp (p
, ".com") == 0 ||
5300 xstrcasecmp (p
, ".bat") == 0 ||
5301 xstrcasecmp (p
, ".cmd") == 0))
5302 permission
|= S_IEXEC
;
5306 buf
->st_mode
|= permission
| (permission
>> 3) | (permission
>> 6);
5311 /* A version of 'utime' which handles directories as well as
5315 utime (const char *name
, struct utimbuf
*times
)
5317 struct utimbuf deftime
;
5324 deftime
.modtime
= deftime
.actime
= time (NULL
);
5328 if (w32_unicode_filenames
)
5330 wchar_t name_utf16
[MAX_PATH
];
5332 if (filename_to_utf16 (name
, name_utf16
) != 0)
5333 return -1; /* errno set by filename_to_utf16 */
5335 /* Need write access to set times. */
5336 fh
= CreateFileW (name_utf16
, FILE_WRITE_ATTRIBUTES
,
5337 /* If NAME specifies a directory, FILE_SHARE_DELETE
5338 allows other processes to delete files inside it,
5339 while we have the directory open. */
5340 FILE_SHARE_READ
| FILE_SHARE_WRITE
| FILE_SHARE_DELETE
,
5341 0, OPEN_EXISTING
, FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
5345 char name_ansi
[MAX_PATH
];
5347 if (filename_to_ansi (name
, name_ansi
) != 0)
5348 return -1; /* errno set by filename_to_ansi */
5350 fh
= CreateFileA (name_ansi
, FILE_WRITE_ATTRIBUTES
,
5351 FILE_SHARE_READ
| FILE_SHARE_WRITE
| FILE_SHARE_DELETE
,
5352 0, OPEN_EXISTING
, FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
5354 if (fh
!= INVALID_HANDLE_VALUE
)
5356 convert_from_time_t (times
->actime
, &atime
);
5357 convert_from_time_t (times
->modtime
, &mtime
);
5358 if (!SetFileTime (fh
, NULL
, &atime
, &mtime
))
5368 DWORD err
= GetLastError ();
5372 case ERROR_FILE_NOT_FOUND
:
5373 case ERROR_PATH_NOT_FOUND
:
5374 case ERROR_INVALID_DRIVE
:
5375 case ERROR_BAD_NETPATH
:
5376 case ERROR_DEV_NOT_EXIST
:
5377 /* ERROR_INVALID_NAME is the error CreateFile sets when the
5378 file name includes ?s, i.e. translation to ANSI failed. */
5379 case ERROR_INVALID_NAME
:
5382 case ERROR_TOO_MANY_OPEN_FILES
:
5385 case ERROR_ACCESS_DENIED
:
5386 case ERROR_SHARING_VIOLATION
:
5399 sys_umask (int mode
)
5401 static int current_mask
;
5402 int retval
, arg
= 0;
5404 /* The only bit we really support is the write bit. Files are
5405 always readable on MS-Windows, and the execute bit does not exist
5407 /* FIXME: if the GROUP and OTHER bits are reset, we should use ACLs
5408 to prevent access by other users on NTFS. */
5409 if ((mode
& S_IWRITE
) != 0)
5412 retval
= _umask (arg
);
5413 /* Merge into the return value the bits they've set the last time,
5414 which msvcrt.dll ignores and never returns. Emacs insists on its
5415 notion of mask being identical to what we return. */
5416 retval
|= (current_mask
& ~S_IWRITE
);
5417 current_mask
= mode
;
5423 /* Symlink-related functions. */
5424 #ifndef SYMBOLIC_LINK_FLAG_DIRECTORY
5425 #define SYMBOLIC_LINK_FLAG_DIRECTORY 0x1
5429 symlink (char const *filename
, char const *linkname
)
5431 char linkfn
[MAX_UTF8_PATH
], *tgtfn
;
5433 int dir_access
, filename_ends_in_slash
;
5435 /* Diagnostics follows Posix as much as possible. */
5436 if (filename
== NULL
|| linkname
== NULL
)
5446 if (strlen (filename
) > MAX_UTF8_PATH
|| strlen (linkname
) > MAX_UTF8_PATH
)
5448 errno
= ENAMETOOLONG
;
5452 strcpy (linkfn
, map_w32_filename (linkname
, NULL
));
5453 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) == 0)
5459 /* Note: since empty FILENAME was already rejected, we can safely
5460 refer to FILENAME[1]. */
5461 if (!(IS_DIRECTORY_SEP (filename
[0]) || IS_DEVICE_SEP (filename
[1])))
5463 /* Non-absolute FILENAME is understood as being relative to
5464 LINKNAME's directory. We need to prepend that directory to
5465 FILENAME to get correct results from faccessat below, since
5466 otherwise it will interpret FILENAME relative to the
5467 directory where the Emacs process runs. Note that
5468 make-symbolic-link always makes sure LINKNAME is a fully
5469 expanded file name. */
5470 char tem
[MAX_UTF8_PATH
];
5471 char *p
= linkfn
+ strlen (linkfn
);
5473 while (p
> linkfn
&& !IS_ANY_SEP (p
[-1]))
5476 strncpy (tem
, linkfn
, p
- linkfn
);
5477 strcpy (tem
+ (p
- linkfn
), filename
);
5478 dir_access
= faccessat (AT_FDCWD
, tem
, D_OK
, AT_EACCESS
);
5481 dir_access
= faccessat (AT_FDCWD
, filename
, D_OK
, AT_EACCESS
);
5483 /* Since Windows distinguishes between symlinks to directories and
5484 to files, we provide a kludgy feature: if FILENAME doesn't
5485 exist, but ends in a slash, we create a symlink to directory. If
5486 FILENAME exists and is a directory, we always create a symlink to
5488 filename_ends_in_slash
= IS_DIRECTORY_SEP (filename
[strlen (filename
) - 1]);
5489 if (dir_access
== 0 || filename_ends_in_slash
)
5490 flags
= SYMBOLIC_LINK_FLAG_DIRECTORY
;
5492 tgtfn
= (char *)map_w32_filename (filename
, NULL
);
5493 if (filename_ends_in_slash
)
5494 tgtfn
[strlen (tgtfn
) - 1] = '\0';
5497 if (!create_symbolic_link (linkfn
, tgtfn
, flags
))
5499 /* ENOSYS is set by create_symbolic_link, when it detects that
5500 the OS doesn't support the CreateSymbolicLink API. */
5501 if (errno
!= ENOSYS
)
5503 DWORD w32err
= GetLastError ();
5507 /* ERROR_SUCCESS is sometimes returned when LINKFN and
5508 TGTFN point to the same file name, go figure. */
5510 case ERROR_FILE_EXISTS
:
5513 case ERROR_ACCESS_DENIED
:
5516 case ERROR_FILE_NOT_FOUND
:
5517 case ERROR_PATH_NOT_FOUND
:
5518 case ERROR_BAD_NETPATH
:
5519 case ERROR_INVALID_REPARSE_DATA
:
5522 case ERROR_DIRECTORY
:
5525 case ERROR_PRIVILEGE_NOT_HELD
:
5526 case ERROR_NOT_ALL_ASSIGNED
:
5529 case ERROR_DISK_FULL
:
5542 /* A quick inexpensive test of whether FILENAME identifies a file that
5543 is a symlink. Returns non-zero if it is, zero otherwise. FILENAME
5544 must already be in the normalized form returned by
5547 Note: for repeated operations on many files, it is best to test
5548 whether the underlying volume actually supports symlinks, by
5549 testing the FILE_SUPPORTS_REPARSE_POINTS bit in volume's flags, and
5550 avoid the call to this function if it doesn't. That's because the
5551 call to GetFileAttributes takes a non-negligible time, especially
5552 on non-local or removable filesystems. See stat_worker for an
5553 example of how to do that. */
5555 is_symlink (const char *filename
)
5558 wchar_t filename_w
[MAX_PATH
];
5559 char filename_a
[MAX_PATH
];
5560 WIN32_FIND_DATAW wfdw
;
5561 WIN32_FIND_DATAA wfda
;
5563 int attrs_mean_symlink
;
5565 if (w32_unicode_filenames
)
5567 filename_to_utf16 (filename
, filename_w
);
5568 attrs
= GetFileAttributesW (filename_w
);
5572 filename_to_ansi (filename
, filename_a
);
5573 attrs
= GetFileAttributesA (filename_a
);
5577 DWORD w32err
= GetLastError ();
5581 case ERROR_BAD_NETPATH
: /* network share, can't be a symlink */
5583 case ERROR_ACCESS_DENIED
:
5586 case ERROR_FILE_NOT_FOUND
:
5587 case ERROR_PATH_NOT_FOUND
:
5594 if ((attrs
& FILE_ATTRIBUTE_REPARSE_POINT
) == 0)
5596 logon_network_drive (filename
);
5597 if (w32_unicode_filenames
)
5599 fh
= FindFirstFileW (filename_w
, &wfdw
);
5600 attrs_mean_symlink
=
5601 (wfdw
.dwFileAttributes
& FILE_ATTRIBUTE_REPARSE_POINT
) != 0
5602 && (wfdw
.dwReserved0
& IO_REPARSE_TAG_SYMLINK
) == IO_REPARSE_TAG_SYMLINK
;
5604 else if (_mbspbrk (filename_a
, "?"))
5606 /* filename_to_ansi failed to convert the file name. */
5612 fh
= FindFirstFileA (filename_a
, &wfda
);
5613 attrs_mean_symlink
=
5614 (wfda
.dwFileAttributes
& FILE_ATTRIBUTE_REPARSE_POINT
) != 0
5615 && (wfda
.dwReserved0
& IO_REPARSE_TAG_SYMLINK
) == IO_REPARSE_TAG_SYMLINK
;
5617 if (fh
== INVALID_HANDLE_VALUE
)
5620 return attrs_mean_symlink
;
5623 /* If NAME identifies a symbolic link, copy into BUF the file name of
5624 the symlink's target. Copy at most BUF_SIZE bytes, and do NOT
5625 null-terminate the target name, even if it fits. Return the number
5626 of bytes copied, or -1 if NAME is not a symlink or any error was
5627 encountered while resolving it. The file name copied into BUF is
5628 encoded in the current ANSI codepage. */
5630 readlink (const char *name
, char *buf
, size_t buf_size
)
5633 TOKEN_PRIVILEGES privs
;
5634 int restore_privs
= 0;
5637 char resolved
[MAX_UTF8_PATH
];
5650 path
= map_w32_filename (name
, NULL
);
5652 if (strlen (path
) > MAX_UTF8_PATH
)
5654 errno
= ENAMETOOLONG
;
5659 if (is_windows_9x () == TRUE
5660 || (volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) == 0
5661 || !is_symlink (path
))
5664 errno
= EINVAL
; /* not a symlink */
5668 /* Done with simple tests, now we're in for some _real_ work. */
5669 if (enable_privilege (SE_BACKUP_NAME
, TRUE
, &privs
))
5671 /* Implementation note: From here and onward, don't return early,
5672 since that will fail to restore the original set of privileges of
5673 the calling thread. */
5675 retval
= -1; /* not too optimistic, are we? */
5677 /* Note: In the next call to CreateFile, we use zero as the 2nd
5678 argument because, when the symlink is a hidden/system file,
5679 e.g. 'C:\Users\All Users', GENERIC_READ fails with
5680 ERROR_ACCESS_DENIED. Zero seems to work just fine, both for file
5681 and directory symlinks. */
5682 if (w32_unicode_filenames
)
5684 wchar_t path_w
[MAX_PATH
];
5686 filename_to_utf16 (path
, path_w
);
5687 sh
= CreateFileW (path_w
, 0, 0, NULL
, OPEN_EXISTING
,
5688 FILE_FLAG_OPEN_REPARSE_POINT
5689 | FILE_FLAG_BACKUP_SEMANTICS
,
5694 char path_a
[MAX_PATH
];
5696 filename_to_ansi (path
, path_a
);
5697 sh
= CreateFileA (path_a
, 0, 0, NULL
, OPEN_EXISTING
,
5698 FILE_FLAG_OPEN_REPARSE_POINT
5699 | FILE_FLAG_BACKUP_SEMANTICS
,
5702 if (sh
!= INVALID_HANDLE_VALUE
)
5704 BYTE reparse_buf
[MAXIMUM_REPARSE_DATA_BUFFER_SIZE
];
5705 REPARSE_DATA_BUFFER
*reparse_data
= (REPARSE_DATA_BUFFER
*)&reparse_buf
[0];
5708 if (!DeviceIoControl (sh
, FSCTL_GET_REPARSE_POINT
, NULL
, 0,
5709 reparse_buf
, MAXIMUM_REPARSE_DATA_BUFFER_SIZE
,
5712 else if (reparse_data
->ReparseTag
!= IO_REPARSE_TAG_SYMLINK
)
5716 /* Copy the link target name, in wide characters, from
5717 reparse_data, then convert it to multibyte encoding in
5718 the current locale's codepage. */
5722 reparse_data
->SymbolicLinkReparseBuffer
.PrintNameLength
;
5724 reparse_data
->SymbolicLinkReparseBuffer
.PathBuffer
5725 + reparse_data
->SymbolicLinkReparseBuffer
.PrintNameOffset
/sizeof(WCHAR
);
5726 size_t size_to_copy
= buf_size
;
5728 /* According to MSDN, PrintNameLength does not include the
5729 terminating null character. */
5730 lwname
= alloca ((lwname_len
+ 1) * sizeof(WCHAR
));
5731 memcpy (lwname
, lwname_src
, lwname_len
);
5732 lwname
[lwname_len
/sizeof(WCHAR
)] = 0; /* null-terminate */
5733 filename_from_utf16 (lwname
, resolved
);
5734 dostounix_filename (resolved
);
5735 lname_size
= strlen (resolved
) + 1;
5736 if (lname_size
<= buf_size
)
5737 size_to_copy
= lname_size
;
5738 strncpy (buf
, resolved
, size_to_copy
);
5740 retval
= size_to_copy
;
5746 /* CreateFile failed. */
5747 DWORD w32err2
= GetLastError ();
5751 case ERROR_FILE_NOT_FOUND
:
5752 case ERROR_PATH_NOT_FOUND
:
5755 case ERROR_ACCESS_DENIED
:
5756 case ERROR_TOO_MANY_OPEN_FILES
:
5766 restore_privilege (&privs
);
5774 readlinkat (int fd
, char const *name
, char *buffer
,
5777 /* Rely on a hack: an open directory is modeled as file descriptor 0,
5778 as in fstatat. FIXME: Add proper support for readlinkat. */
5779 char fullname
[MAX_UTF8_PATH
];
5783 if (_snprintf (fullname
, sizeof fullname
, "%s/%s", dir_pathname
, name
)
5786 errno
= ENAMETOOLONG
;
5792 return readlink (name
, buffer
, buffer_size
);
5795 /* If FILE is a symlink, return its target (stored in a static
5796 buffer); otherwise return FILE.
5798 This function repeatedly resolves symlinks in the last component of
5799 a chain of symlink file names, as in foo -> bar -> baz -> ...,
5800 until it arrives at a file whose last component is not a symlink,
5801 or some error occurs. It returns the target of the last
5802 successfully resolved symlink in the chain. If it succeeds to
5803 resolve even a single symlink, the value returned is an absolute
5804 file name with backslashes (result of GetFullPathName). By
5805 contrast, if the original FILE is returned, it is unaltered.
5807 Note: This function can set errno even if it succeeds.
5809 Implementation note: we only resolve the last portion ("basename")
5810 of the argument FILE and of each following file in the chain,
5811 disregarding any possible symlinks in its leading directories.
5812 This is because Windows system calls and library functions
5813 transparently resolve symlinks in leading directories and return
5814 correct information, as long as the basename is not a symlink. */
5816 chase_symlinks (const char *file
)
5818 static char target
[MAX_UTF8_PATH
];
5819 char link
[MAX_UTF8_PATH
];
5820 wchar_t target_w
[MAX_PATH
], link_w
[MAX_PATH
];
5821 char target_a
[MAX_PATH
], link_a
[MAX_PATH
];
5822 ssize_t res
, link_len
;
5825 if (is_windows_9x () == TRUE
|| !is_symlink (file
))
5826 return (char *)file
;
5828 if (w32_unicode_filenames
)
5830 wchar_t file_w
[MAX_PATH
];
5832 filename_to_utf16 (file
, file_w
);
5833 if (GetFullPathNameW (file_w
, MAX_PATH
, link_w
, NULL
) == 0)
5834 return (char *)file
;
5835 filename_from_utf16 (link_w
, link
);
5839 char file_a
[MAX_PATH
];
5841 filename_to_ansi (file
, file_a
);
5842 if (GetFullPathNameA (file_a
, MAX_PATH
, link_a
, NULL
) == 0)
5843 return (char *)file
;
5844 filename_from_ansi (link_a
, link
);
5846 link_len
= strlen (link
);
5851 /* Remove trailing slashes, as we want to resolve the last
5852 non-trivial part of the link name. */
5853 while (link_len
> 3 && IS_DIRECTORY_SEP (link
[link_len
-1]))
5854 link
[link_len
--] = '\0';
5856 res
= readlink (link
, target
, MAX_UTF8_PATH
);
5860 if (!(IS_DEVICE_SEP (target
[1])
5861 || (IS_DIRECTORY_SEP (target
[0]) && IS_DIRECTORY_SEP (target
[1]))))
5863 /* Target is relative. Append it to the directory part of
5864 the symlink, then copy the result back to target. */
5865 char *p
= link
+ link_len
;
5867 while (p
> link
&& !IS_ANY_SEP (p
[-1]))
5870 strcpy (target
, link
);
5872 /* Resolve any "." and ".." to get a fully-qualified file name
5874 if (w32_unicode_filenames
)
5876 filename_to_utf16 (target
, target_w
);
5877 link_len
= GetFullPathNameW (target_w
, MAX_PATH
, link_w
, NULL
);
5879 filename_from_utf16 (link_w
, link
);
5883 filename_to_ansi (target
, target_a
);
5884 link_len
= GetFullPathNameA (target_a
, MAX_PATH
, link_a
, NULL
);
5886 filename_from_ansi (link_a
, link
);
5888 link_len
= strlen (link
);
5890 } while (res
> 0 && link_len
> 0 && ++loop_count
<= 100);
5892 if (loop_count
> 100)
5895 if (target
[0] == '\0') /* not a single call to readlink succeeded */
5896 return (char *)file
;
5901 /* Posix ACL emulation. */
5904 acl_valid (acl_t acl
)
5906 return is_valid_security_descriptor ((PSECURITY_DESCRIPTOR
)acl
) ? 0 : -1;
5910 acl_to_text (acl_t acl
, ssize_t
*size
)
5913 SECURITY_INFORMATION flags
=
5914 OWNER_SECURITY_INFORMATION
|
5915 GROUP_SECURITY_INFORMATION
|
5916 DACL_SECURITY_INFORMATION
;
5917 char *retval
= NULL
;
5923 if (convert_sd_to_sddl ((PSECURITY_DESCRIPTOR
)acl
, SDDL_REVISION_1
, flags
, &str_acl
, &local_size
))
5926 /* We don't want to mix heaps, so we duplicate the string in our
5927 heap and free the one allocated by the API. */
5928 retval
= xstrdup (str_acl
);
5931 LocalFree (str_acl
);
5933 else if (errno
!= ENOTSUP
)
5940 acl_from_text (const char *acl_str
)
5942 PSECURITY_DESCRIPTOR psd
, retval
= NULL
;
5948 if (convert_sddl_to_sd (acl_str
, SDDL_REVISION_1
, &psd
, &sd_size
))
5951 retval
= xmalloc (sd_size
);
5952 memcpy (retval
, psd
, sd_size
);
5955 else if (errno
!= ENOTSUP
)
5962 acl_free (void *ptr
)
5969 acl_get_file (const char *fname
, acl_type_t type
)
5971 PSECURITY_DESCRIPTOR psd
= NULL
;
5972 const char *filename
;
5974 if (type
== ACL_TYPE_ACCESS
)
5977 SECURITY_INFORMATION si
=
5978 OWNER_SECURITY_INFORMATION
|
5979 GROUP_SECURITY_INFORMATION
|
5980 DACL_SECURITY_INFORMATION
;
5983 filename
= map_w32_filename (fname
, NULL
);
5984 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) != 0)
5985 fname
= chase_symlinks (filename
);
5990 if (!get_file_security (fname
, si
, psd
, 0, &sd_len
)
5991 && errno
!= ENOTSUP
)
5993 err
= GetLastError ();
5994 if (err
== ERROR_INSUFFICIENT_BUFFER
)
5996 psd
= xmalloc (sd_len
);
5997 if (!get_file_security (fname
, si
, psd
, sd_len
, &sd_len
))
6004 else if (err
== ERROR_FILE_NOT_FOUND
6005 || err
== ERROR_PATH_NOT_FOUND
6006 /* ERROR_INVALID_NAME is what we get if
6007 w32-unicode-filenames is nil and the file cannot
6008 be encoded in the current ANSI codepage. */
6009 || err
== ERROR_INVALID_NAME
)
6017 else if (type
!= ACL_TYPE_DEFAULT
)
6024 acl_set_file (const char *fname
, acl_type_t type
, acl_t acl
)
6026 TOKEN_PRIVILEGES old1
, old2
;
6028 int st
= 0, retval
= -1;
6029 SECURITY_INFORMATION flags
= 0;
6030 PSID psidOwner
, psidGroup
;
6035 const char *filename
;
6037 if (acl_valid (acl
) != 0
6038 || (type
!= ACL_TYPE_DEFAULT
&& type
!= ACL_TYPE_ACCESS
))
6044 if (type
== ACL_TYPE_DEFAULT
)
6050 filename
= map_w32_filename (fname
, NULL
);
6051 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) != 0)
6052 fname
= chase_symlinks (filename
);
6056 if (get_security_descriptor_owner ((PSECURITY_DESCRIPTOR
)acl
, &psidOwner
,
6059 flags
|= OWNER_SECURITY_INFORMATION
;
6060 if (get_security_descriptor_group ((PSECURITY_DESCRIPTOR
)acl
, &psidGroup
,
6063 flags
|= GROUP_SECURITY_INFORMATION
;
6064 if (get_security_descriptor_dacl ((PSECURITY_DESCRIPTOR
)acl
, &dacl_present
,
6067 flags
|= DACL_SECURITY_INFORMATION
;
6071 /* According to KB-245153, setting the owner will succeed if either:
6072 (1) the caller is the user who will be the new owner, and has the
6073 SE_TAKE_OWNERSHIP privilege, or
6074 (2) the caller has the SE_RESTORE privilege, in which case she can
6075 set any valid user or group as the owner
6077 We request below both SE_TAKE_OWNERSHIP and SE_RESTORE
6078 privileges, and disregard any failures in obtaining them. If
6079 these privileges cannot be obtained, and do not already exist in
6080 the calling thread's security token, this function could fail
6082 if (enable_privilege (SE_TAKE_OWNERSHIP_NAME
, TRUE
, &old1
))
6084 if (enable_privilege (SE_RESTORE_NAME
, TRUE
, &old2
))
6089 /* SetFileSecurity is deprecated by MS, and sometimes fails when
6090 DACL inheritance is involved, but it seems to preserve ownership
6091 better than SetNamedSecurityInfo, which is important e.g., in
6093 if (!set_file_security (fname
, flags
, (PSECURITY_DESCRIPTOR
)acl
))
6095 err
= GetLastError ();
6097 if (errno
!= ENOTSUP
)
6098 err
= set_named_security_info (fname
, SE_FILE_OBJECT
, flags
,
6099 psidOwner
, psidGroup
, pacl
, NULL
);
6102 err
= ERROR_SUCCESS
;
6103 if (err
!= ERROR_SUCCESS
)
6105 if (errno
== ENOTSUP
)
6107 else if (err
== ERROR_INVALID_OWNER
6108 || err
== ERROR_NOT_ALL_ASSIGNED
6109 || err
== ERROR_ACCESS_DENIED
)
6111 /* Maybe the requested ACL and the one the file already has
6112 are identical, in which case we can silently ignore the
6113 failure. (And no, Windows doesn't.) */
6114 acl_t current_acl
= acl_get_file (fname
, ACL_TYPE_ACCESS
);
6119 char *acl_from
= acl_to_text (current_acl
, NULL
);
6120 char *acl_to
= acl_to_text (acl
, NULL
);
6122 if (acl_from
&& acl_to
&& xstrcasecmp (acl_from
, acl_to
) == 0)
6128 acl_free (acl_from
);
6131 acl_free (current_acl
);
6134 else if (err
== ERROR_FILE_NOT_FOUND
6135 || err
== ERROR_PATH_NOT_FOUND
6136 /* ERROR_INVALID_NAME is what we get if
6137 w32-unicode-filenames is nil and the file cannot be
6138 encoded in the current ANSI codepage. */
6139 || err
== ERROR_INVALID_NAME
)
6153 restore_privilege (&old2
);
6154 restore_privilege (&old1
);
6162 /* MS-Windows version of careadlinkat (cf. ../lib/careadlinkat.c). We
6163 have a fixed max size for file names, so we don't need the kind of
6164 alloc/malloc/realloc dance the gnulib version does. We also don't
6165 support FD-relative symlinks. */
6167 careadlinkat (int fd
, char const *filename
,
6168 char *buffer
, size_t buffer_size
,
6169 struct allocator
const *alloc
,
6170 ssize_t (*preadlinkat
) (int, char const *, char *, size_t))
6172 char linkname
[MAX_UTF8_PATH
];
6175 link_size
= preadlinkat (fd
, filename
, linkname
, sizeof(linkname
));
6179 char *retval
= buffer
;
6181 linkname
[link_size
++] = '\0';
6182 if (link_size
> buffer_size
)
6183 retval
= (char *)(alloc
? alloc
->allocate
: xmalloc
) (link_size
);
6185 memcpy (retval
, linkname
, link_size
);
6193 w32_copy_file (const char *from
, const char *to
,
6194 int keep_time
, int preserve_ownership
, int copy_acls
)
6198 wchar_t from_w
[MAX_PATH
], to_w
[MAX_PATH
];
6199 char from_a
[MAX_PATH
], to_a
[MAX_PATH
];
6201 /* We ignore preserve_ownership for now. */
6202 preserve_ownership
= preserve_ownership
;
6206 acl
= acl_get_file (from
, ACL_TYPE_ACCESS
);
6207 if (acl
== NULL
&& acl_errno_valid (errno
))
6210 if (w32_unicode_filenames
)
6212 filename_to_utf16 (from
, from_w
);
6213 filename_to_utf16 (to
, to_w
);
6214 copy_result
= CopyFileW (from_w
, to_w
, FALSE
);
6218 filename_to_ansi (from
, from_a
);
6219 filename_to_ansi (to
, to_a
);
6220 copy_result
= CopyFileA (from_a
, to_a
, FALSE
);
6224 /* CopyFile doesn't set errno when it fails. By far the most
6225 "popular" reason is that the target is read-only. */
6226 DWORD err
= GetLastError ();
6230 case ERROR_FILE_NOT_FOUND
:
6233 case ERROR_ACCESS_DENIED
:
6236 case ERROR_ENCRYPTION_FAILED
:
6248 /* CopyFile retains the timestamp by default. However, see
6249 "Community Additions" for CopyFile: it sounds like that is not
6250 entirely true. Testing on Windows XP confirms that modified time
6251 is copied, but creation and last-access times are not.
6253 else if (!keep_time
)
6255 struct timespec now
;
6258 if (w32_unicode_filenames
)
6260 /* Ensure file is writable while its times are set. */
6261 attributes
= GetFileAttributesW (to_w
);
6262 SetFileAttributesW (to_w
, attributes
& ~FILE_ATTRIBUTE_READONLY
);
6263 now
= current_timespec ();
6264 if (set_file_times (-1, to
, now
, now
))
6266 /* Restore original attributes. */
6267 SetFileAttributesW (to_w
, attributes
);
6272 /* Restore original attributes. */
6273 SetFileAttributesW (to_w
, attributes
);
6277 attributes
= GetFileAttributesA (to_a
);
6278 SetFileAttributesA (to_a
, attributes
& ~FILE_ATTRIBUTE_READONLY
);
6279 now
= current_timespec ();
6280 if (set_file_times (-1, to
, now
, now
))
6282 SetFileAttributesA (to_a
, attributes
);
6287 SetFileAttributesA (to_a
, attributes
);
6293 acl_set_file (to
, ACL_TYPE_ACCESS
, acl
) != 0;
6295 if (fail
&& acl_errno_valid (errno
))
6303 /* Support for browsing other processes and their attributes. See
6304 process.c for the Lisp bindings. */
6306 /* Helper wrapper functions. */
6308 static HANDLE WINAPI
6309 create_toolhelp32_snapshot (DWORD Flags
, DWORD Ignored
)
6311 static CreateToolhelp32Snapshot_Proc s_pfn_Create_Toolhelp32_Snapshot
= NULL
;
6313 if (g_b_init_create_toolhelp32_snapshot
== 0)
6315 g_b_init_create_toolhelp32_snapshot
= 1;
6316 s_pfn_Create_Toolhelp32_Snapshot
= (CreateToolhelp32Snapshot_Proc
)
6317 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6318 "CreateToolhelp32Snapshot");
6320 if (s_pfn_Create_Toolhelp32_Snapshot
== NULL
)
6322 return INVALID_HANDLE_VALUE
;
6324 return (s_pfn_Create_Toolhelp32_Snapshot (Flags
, Ignored
));
6328 process32_first (HANDLE hSnapshot
, LPPROCESSENTRY32 lppe
)
6330 static Process32First_Proc s_pfn_Process32_First
= NULL
;
6332 if (g_b_init_process32_first
== 0)
6334 g_b_init_process32_first
= 1;
6335 s_pfn_Process32_First
= (Process32First_Proc
)
6336 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6339 if (s_pfn_Process32_First
== NULL
)
6343 return (s_pfn_Process32_First (hSnapshot
, lppe
));
6347 process32_next (HANDLE hSnapshot
, LPPROCESSENTRY32 lppe
)
6349 static Process32Next_Proc s_pfn_Process32_Next
= NULL
;
6351 if (g_b_init_process32_next
== 0)
6353 g_b_init_process32_next
= 1;
6354 s_pfn_Process32_Next
= (Process32Next_Proc
)
6355 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6358 if (s_pfn_Process32_Next
== NULL
)
6362 return (s_pfn_Process32_Next (hSnapshot
, lppe
));
6366 open_thread_token (HANDLE ThreadHandle
,
6367 DWORD DesiredAccess
,
6369 PHANDLE TokenHandle
)
6371 static OpenThreadToken_Proc s_pfn_Open_Thread_Token
= NULL
;
6372 HMODULE hm_advapi32
= NULL
;
6373 if (is_windows_9x () == TRUE
)
6375 SetLastError (ERROR_NOT_SUPPORTED
);
6378 if (g_b_init_open_thread_token
== 0)
6380 g_b_init_open_thread_token
= 1;
6381 hm_advapi32
= LoadLibrary ("Advapi32.dll");
6382 s_pfn_Open_Thread_Token
=
6383 (OpenThreadToken_Proc
) GetProcAddress (hm_advapi32
, "OpenThreadToken");
6385 if (s_pfn_Open_Thread_Token
== NULL
)
6387 SetLastError (ERROR_NOT_SUPPORTED
);
6391 s_pfn_Open_Thread_Token (
6400 impersonate_self (SECURITY_IMPERSONATION_LEVEL ImpersonationLevel
)
6402 static ImpersonateSelf_Proc s_pfn_Impersonate_Self
= NULL
;
6403 HMODULE hm_advapi32
= NULL
;
6404 if (is_windows_9x () == TRUE
)
6408 if (g_b_init_impersonate_self
== 0)
6410 g_b_init_impersonate_self
= 1;
6411 hm_advapi32
= LoadLibrary ("Advapi32.dll");
6412 s_pfn_Impersonate_Self
=
6413 (ImpersonateSelf_Proc
) GetProcAddress (hm_advapi32
, "ImpersonateSelf");
6415 if (s_pfn_Impersonate_Self
== NULL
)
6419 return s_pfn_Impersonate_Self (ImpersonationLevel
);
6423 revert_to_self (void)
6425 static RevertToSelf_Proc s_pfn_Revert_To_Self
= NULL
;
6426 HMODULE hm_advapi32
= NULL
;
6427 if (is_windows_9x () == TRUE
)
6431 if (g_b_init_revert_to_self
== 0)
6433 g_b_init_revert_to_self
= 1;
6434 hm_advapi32
= LoadLibrary ("Advapi32.dll");
6435 s_pfn_Revert_To_Self
=
6436 (RevertToSelf_Proc
) GetProcAddress (hm_advapi32
, "RevertToSelf");
6438 if (s_pfn_Revert_To_Self
== NULL
)
6442 return s_pfn_Revert_To_Self ();
6446 get_process_memory_info (HANDLE h_proc
,
6447 PPROCESS_MEMORY_COUNTERS mem_counters
,
6450 static GetProcessMemoryInfo_Proc s_pfn_Get_Process_Memory_Info
= NULL
;
6451 HMODULE hm_psapi
= NULL
;
6452 if (is_windows_9x () == TRUE
)
6456 if (g_b_init_get_process_memory_info
== 0)
6458 g_b_init_get_process_memory_info
= 1;
6459 hm_psapi
= LoadLibrary ("Psapi.dll");
6461 s_pfn_Get_Process_Memory_Info
= (GetProcessMemoryInfo_Proc
)
6462 GetProcAddress (hm_psapi
, "GetProcessMemoryInfo");
6464 if (s_pfn_Get_Process_Memory_Info
== NULL
)
6468 return s_pfn_Get_Process_Memory_Info (h_proc
, mem_counters
, bufsize
);
6472 get_process_working_set_size (HANDLE h_proc
,
6476 static GetProcessWorkingSetSize_Proc
6477 s_pfn_Get_Process_Working_Set_Size
= NULL
;
6479 if (is_windows_9x () == TRUE
)
6483 if (g_b_init_get_process_working_set_size
== 0)
6485 g_b_init_get_process_working_set_size
= 1;
6486 s_pfn_Get_Process_Working_Set_Size
= (GetProcessWorkingSetSize_Proc
)
6487 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6488 "GetProcessWorkingSetSize");
6490 if (s_pfn_Get_Process_Working_Set_Size
== NULL
)
6494 return s_pfn_Get_Process_Working_Set_Size (h_proc
, minrss
, maxrss
);
6498 global_memory_status (MEMORYSTATUS
*buf
)
6500 static GlobalMemoryStatus_Proc s_pfn_Global_Memory_Status
= NULL
;
6502 if (is_windows_9x () == TRUE
)
6506 if (g_b_init_global_memory_status
== 0)
6508 g_b_init_global_memory_status
= 1;
6509 s_pfn_Global_Memory_Status
= (GlobalMemoryStatus_Proc
)
6510 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6511 "GlobalMemoryStatus");
6513 if (s_pfn_Global_Memory_Status
== NULL
)
6517 return s_pfn_Global_Memory_Status (buf
);
6521 global_memory_status_ex (MEMORY_STATUS_EX
*buf
)
6523 static GlobalMemoryStatusEx_Proc s_pfn_Global_Memory_Status_Ex
= NULL
;
6525 if (is_windows_9x () == TRUE
)
6529 if (g_b_init_global_memory_status_ex
== 0)
6531 g_b_init_global_memory_status_ex
= 1;
6532 s_pfn_Global_Memory_Status_Ex
= (GlobalMemoryStatusEx_Proc
)
6533 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6534 "GlobalMemoryStatusEx");
6536 if (s_pfn_Global_Memory_Status_Ex
== NULL
)
6540 return s_pfn_Global_Memory_Status_Ex (buf
);
6544 list_system_processes (void)
6546 struct gcpro gcpro1
;
6547 Lisp_Object proclist
= Qnil
;
6550 h_snapshot
= create_toolhelp32_snapshot (TH32CS_SNAPPROCESS
, 0);
6552 if (h_snapshot
!= INVALID_HANDLE_VALUE
)
6554 PROCESSENTRY32 proc_entry
;
6560 proc_entry
.dwSize
= sizeof (PROCESSENTRY32
);
6561 for (res
= process32_first (h_snapshot
, &proc_entry
); res
;
6562 res
= process32_next (h_snapshot
, &proc_entry
))
6564 proc_id
= proc_entry
.th32ProcessID
;
6565 proclist
= Fcons (make_fixnum_or_float (proc_id
), proclist
);
6568 CloseHandle (h_snapshot
);
6570 proclist
= Fnreverse (proclist
);
6577 enable_privilege (LPCTSTR priv_name
, BOOL enable_p
, TOKEN_PRIVILEGES
*old_priv
)
6579 TOKEN_PRIVILEGES priv
;
6580 DWORD priv_size
= sizeof (priv
);
6581 DWORD opriv_size
= sizeof (*old_priv
);
6582 HANDLE h_token
= NULL
;
6583 HANDLE h_thread
= GetCurrentThread ();
6587 res
= open_thread_token (h_thread
,
6588 TOKEN_QUERY
| TOKEN_ADJUST_PRIVILEGES
,
6590 if (!res
&& GetLastError () == ERROR_NO_TOKEN
)
6592 if (impersonate_self (SecurityImpersonation
))
6593 res
= open_thread_token (h_thread
,
6594 TOKEN_QUERY
| TOKEN_ADJUST_PRIVILEGES
,
6599 priv
.PrivilegeCount
= 1;
6600 priv
.Privileges
[0].Attributes
= enable_p
? SE_PRIVILEGE_ENABLED
: 0;
6601 LookupPrivilegeValue (NULL
, priv_name
, &priv
.Privileges
[0].Luid
);
6602 if (AdjustTokenPrivileges (h_token
, FALSE
, &priv
, priv_size
,
6603 old_priv
, &opriv_size
)
6604 && GetLastError () != ERROR_NOT_ALL_ASSIGNED
)
6608 CloseHandle (h_token
);
6614 restore_privilege (TOKEN_PRIVILEGES
*priv
)
6616 DWORD priv_size
= sizeof (*priv
);
6617 HANDLE h_token
= NULL
;
6620 if (open_thread_token (GetCurrentThread (),
6621 TOKEN_QUERY
| TOKEN_ADJUST_PRIVILEGES
,
6624 if (AdjustTokenPrivileges (h_token
, FALSE
, priv
, priv_size
, NULL
, NULL
)
6625 && GetLastError () != ERROR_NOT_ALL_ASSIGNED
)
6629 CloseHandle (h_token
);
6635 ltime (ULONGLONG time_100ns
)
6637 ULONGLONG time_sec
= time_100ns
/ 10000000;
6638 int subsec
= time_100ns
% 10000000;
6639 return list4i (time_sec
>> 16, time_sec
& 0xffff,
6640 subsec
/ 10, subsec
% 10 * 100000);
6643 #define U64_TO_LISP_TIME(time) ltime (time)
6646 process_times (HANDLE h_proc
, Lisp_Object
*ctime
, Lisp_Object
*etime
,
6647 Lisp_Object
*stime
, Lisp_Object
*utime
, Lisp_Object
*ttime
,
6650 FILETIME ft_creation
, ft_exit
, ft_kernel
, ft_user
, ft_current
;
6651 ULONGLONG tem1
, tem2
, tem3
, tem
;
6654 || !get_process_times_fn
6655 || !(*get_process_times_fn
) (h_proc
, &ft_creation
, &ft_exit
,
6656 &ft_kernel
, &ft_user
))
6659 GetSystemTimeAsFileTime (&ft_current
);
6661 FILETIME_TO_U64 (tem1
, ft_kernel
);
6662 *stime
= U64_TO_LISP_TIME (tem1
);
6664 FILETIME_TO_U64 (tem2
, ft_user
);
6665 *utime
= U64_TO_LISP_TIME (tem2
);
6668 *ttime
= U64_TO_LISP_TIME (tem3
);
6670 FILETIME_TO_U64 (tem
, ft_creation
);
6671 /* Process no 4 (System) returns zero creation time. */
6674 *ctime
= U64_TO_LISP_TIME (tem
);
6678 FILETIME_TO_U64 (tem3
, ft_current
);
6679 tem
= (tem3
- utc_base
) - tem
;
6681 *etime
= U64_TO_LISP_TIME (tem
);
6685 *pcpu
= 100.0 * (tem1
+ tem2
) / tem
;
6696 system_process_attributes (Lisp_Object pid
)
6698 struct gcpro gcpro1
, gcpro2
, gcpro3
;
6699 Lisp_Object attrs
= Qnil
;
6700 Lisp_Object cmd_str
, decoded_cmd
, tem
;
6701 HANDLE h_snapshot
, h_proc
;
6704 char uname
[UNLEN
+1], gname
[GNLEN
+1], domain
[1025];
6705 DWORD ulength
= sizeof (uname
), dlength
= sizeof (domain
), needed
;
6706 DWORD glength
= sizeof (gname
);
6707 HANDLE token
= NULL
;
6708 SID_NAME_USE user_type
;
6709 unsigned char *buf
= NULL
;
6711 TOKEN_USER user_token
;
6712 TOKEN_PRIMARY_GROUP group_token
;
6715 PROCESS_MEMORY_COUNTERS mem
;
6716 PROCESS_MEMORY_COUNTERS_EX mem_ex
;
6717 SIZE_T minrss
, maxrss
;
6719 MEMORY_STATUS_EX memstex
;
6720 double totphys
= 0.0;
6721 Lisp_Object ctime
, stime
, utime
, etime
, ttime
;
6723 BOOL result
= FALSE
;
6725 CHECK_NUMBER_OR_FLOAT (pid
);
6726 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
6728 h_snapshot
= create_toolhelp32_snapshot (TH32CS_SNAPPROCESS
, 0);
6730 GCPRO3 (attrs
, decoded_cmd
, tem
);
6732 if (h_snapshot
!= INVALID_HANDLE_VALUE
)
6737 pe
.dwSize
= sizeof (PROCESSENTRY32
);
6738 for (res
= process32_first (h_snapshot
, &pe
); res
;
6739 res
= process32_next (h_snapshot
, &pe
))
6741 if (proc_id
== pe
.th32ProcessID
)
6744 decoded_cmd
= build_string ("Idle");
6747 /* Decode the command name from locale-specific
6749 cmd_str
= build_unibyte_string (pe
.szExeFile
);
6752 code_convert_string_norecord (cmd_str
,
6753 Vlocale_coding_system
, 0);
6755 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
6756 attrs
= Fcons (Fcons (Qppid
,
6757 make_fixnum_or_float (pe
.th32ParentProcessID
)),
6759 attrs
= Fcons (Fcons (Qpri
, make_number (pe
.pcPriClassBase
)),
6761 attrs
= Fcons (Fcons (Qthcount
,
6762 make_fixnum_or_float (pe
.cntThreads
)),
6769 CloseHandle (h_snapshot
);
6778 h_proc
= OpenProcess (PROCESS_QUERY_INFORMATION
| PROCESS_VM_READ
,
6780 /* If we were denied a handle to the process, try again after
6781 enabling the SeDebugPrivilege in our process. */
6784 TOKEN_PRIVILEGES priv_current
;
6786 if (enable_privilege (SE_DEBUG_NAME
, TRUE
, &priv_current
))
6788 h_proc
= OpenProcess (PROCESS_QUERY_INFORMATION
| PROCESS_VM_READ
,
6790 restore_privilege (&priv_current
);
6796 result
= open_process_token (h_proc
, TOKEN_QUERY
, &token
);
6799 result
= get_token_information (token
, TokenUser
, NULL
, 0, &blen
);
6800 if (!result
&& GetLastError () == ERROR_INSUFFICIENT_BUFFER
)
6802 buf
= xmalloc (blen
);
6803 result
= get_token_information (token
, TokenUser
,
6804 (LPVOID
)buf
, blen
, &needed
);
6807 memcpy (&user_token
, buf
, sizeof (user_token
));
6808 if (!w32_cached_id (user_token
.User
.Sid
, &euid
, uname
))
6810 euid
= get_rid (user_token
.User
.Sid
);
6811 result
= lookup_account_sid (NULL
, user_token
.User
.Sid
,
6816 w32_add_to_cache (user_token
.User
.Sid
, euid
, uname
);
6819 strcpy (uname
, "unknown");
6823 ulength
= strlen (uname
);
6829 /* Determine a reasonable euid and gid values. */
6830 if (xstrcasecmp ("administrator", uname
) == 0)
6832 euid
= 500; /* well-known Administrator uid */
6833 egid
= 513; /* well-known None gid */
6837 /* Get group id and name. */
6838 result
= get_token_information (token
, TokenPrimaryGroup
,
6839 (LPVOID
)buf
, blen
, &needed
);
6840 if (!result
&& GetLastError () == ERROR_INSUFFICIENT_BUFFER
)
6842 buf
= xrealloc (buf
, blen
= needed
);
6843 result
= get_token_information (token
, TokenPrimaryGroup
,
6844 (LPVOID
)buf
, blen
, &needed
);
6848 memcpy (&group_token
, buf
, sizeof (group_token
));
6849 if (!w32_cached_id (group_token
.PrimaryGroup
, &egid
, gname
))
6851 egid
= get_rid (group_token
.PrimaryGroup
);
6852 dlength
= sizeof (domain
);
6854 lookup_account_sid (NULL
, group_token
.PrimaryGroup
,
6855 gname
, &glength
, NULL
, &dlength
,
6858 w32_add_to_cache (group_token
.PrimaryGroup
,
6862 strcpy (gname
, "None");
6866 glength
= strlen (gname
);
6874 if (!is_windows_9x ())
6876 /* We couldn't open the process token, presumably because of
6877 insufficient access rights. Assume this process is run
6879 strcpy (uname
, "SYSTEM");
6880 strcpy (gname
, "None");
6881 euid
= 18; /* SYSTEM */
6882 egid
= 513; /* None */
6883 glength
= strlen (gname
);
6884 ulength
= strlen (uname
);
6886 /* If we are running under Windows 9X, where security calls are
6887 not supported, we assume all processes are run by the current
6889 else if (GetUserName (uname
, &ulength
))
6891 if (xstrcasecmp ("administrator", uname
) == 0)
6896 strcpy (gname
, "None");
6897 glength
= strlen (gname
);
6898 ulength
= strlen (uname
);
6904 strcpy (uname
, "administrator");
6905 ulength
= strlen (uname
);
6906 strcpy (gname
, "None");
6907 glength
= strlen (gname
);
6910 CloseHandle (token
);
6913 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (euid
)), attrs
);
6914 tem
= make_unibyte_string (uname
, ulength
);
6915 attrs
= Fcons (Fcons (Quser
,
6916 code_convert_string_norecord (tem
, Vlocale_coding_system
, 0)),
6918 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (egid
)), attrs
);
6919 tem
= make_unibyte_string (gname
, glength
);
6920 attrs
= Fcons (Fcons (Qgroup
,
6921 code_convert_string_norecord (tem
, Vlocale_coding_system
, 0)),
6924 if (global_memory_status_ex (&memstex
))
6925 #if __GNUC__ || (defined (_MSC_VER) && _MSC_VER >= 1300)
6926 totphys
= memstex
.ullTotalPhys
/ 1024.0;
6928 /* Visual Studio 6 cannot convert an unsigned __int64 type to
6929 double, so we need to do this for it... */
6931 DWORD tot_hi
= memstex
.ullTotalPhys
>> 32;
6932 DWORD tot_md
= (memstex
.ullTotalPhys
& 0x00000000ffffffff) >> 10;
6933 DWORD tot_lo
= memstex
.ullTotalPhys
% 1024;
6935 totphys
= tot_hi
* 4194304.0 + tot_md
+ tot_lo
/ 1024.0;
6937 #endif /* __GNUC__ || _MSC_VER >= 1300 */
6938 else if (global_memory_status (&memst
))
6939 totphys
= memst
.dwTotalPhys
/ 1024.0;
6942 && get_process_memory_info (h_proc
, (PROCESS_MEMORY_COUNTERS
*)&mem_ex
,
6945 SIZE_T rss
= mem_ex
.WorkingSetSize
/ 1024;
6947 attrs
= Fcons (Fcons (Qmajflt
,
6948 make_fixnum_or_float (mem_ex
.PageFaultCount
)),
6950 attrs
= Fcons (Fcons (Qvsize
,
6951 make_fixnum_or_float (mem_ex
.PrivateUsage
/ 1024)),
6953 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (rss
)), attrs
);
6955 attrs
= Fcons (Fcons (Qpmem
, make_float (100. * rss
/ totphys
)), attrs
);
6958 && get_process_memory_info (h_proc
, &mem
, sizeof (mem
)))
6960 SIZE_T rss
= mem_ex
.WorkingSetSize
/ 1024;
6962 attrs
= Fcons (Fcons (Qmajflt
,
6963 make_fixnum_or_float (mem
.PageFaultCount
)),
6965 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (rss
)), attrs
);
6967 attrs
= Fcons (Fcons (Qpmem
, make_float (100. * rss
/ totphys
)), attrs
);
6970 && get_process_working_set_size (h_proc
, &minrss
, &maxrss
))
6972 DWORD rss
= maxrss
/ 1024;
6974 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (maxrss
/ 1024)), attrs
);
6976 attrs
= Fcons (Fcons (Qpmem
, make_float (100. * rss
/ totphys
)), attrs
);
6979 if (process_times (h_proc
, &ctime
, &etime
, &stime
, &utime
, &ttime
, &pcpu
))
6981 attrs
= Fcons (Fcons (Qutime
, utime
), attrs
);
6982 attrs
= Fcons (Fcons (Qstime
, stime
), attrs
);
6983 attrs
= Fcons (Fcons (Qtime
, ttime
), attrs
);
6984 attrs
= Fcons (Fcons (Qstart
, ctime
), attrs
);
6985 attrs
= Fcons (Fcons (Qetime
, etime
), attrs
);
6986 attrs
= Fcons (Fcons (Qpcpu
, make_float (pcpu
)), attrs
);
6989 /* FIXME: Retrieve command line by walking the PEB of the process. */
6992 CloseHandle (h_proc
);
6998 w32_memory_info (unsigned long long *totalram
, unsigned long long *freeram
,
6999 unsigned long long *totalswap
, unsigned long long *freeswap
)
7002 MEMORY_STATUS_EX memstex
;
7004 /* Use GlobalMemoryStatusEx if available, as it can report more than
7006 if (global_memory_status_ex (&memstex
))
7008 *totalram
= memstex
.ullTotalPhys
;
7009 *freeram
= memstex
.ullAvailPhys
;
7010 *totalswap
= memstex
.ullTotalPageFile
;
7011 *freeswap
= memstex
.ullAvailPageFile
;
7014 else if (global_memory_status (&memst
))
7016 *totalram
= memst
.dwTotalPhys
;
7017 *freeram
= memst
.dwAvailPhys
;
7018 *totalswap
= memst
.dwTotalPageFile
;
7019 *freeswap
= memst
.dwAvailPageFile
;
7027 /* Wrappers for winsock functions to map between our file descriptors
7028 and winsock's handles; also set h_errno for convenience.
7030 To allow Emacs to run on systems which don't have winsock support
7031 installed, we dynamically link to winsock on startup if present, and
7032 otherwise provide the minimum necessary functionality
7033 (eg. gethostname). */
7035 /* function pointers for relevant socket functions */
7036 int (PASCAL
*pfn_WSAStartup
) (WORD wVersionRequired
, LPWSADATA lpWSAData
);
7037 void (PASCAL
*pfn_WSASetLastError
) (int iError
);
7038 int (PASCAL
*pfn_WSAGetLastError
) (void);
7039 int (PASCAL
*pfn_WSAEventSelect
) (SOCKET s
, HANDLE hEventObject
, long lNetworkEvents
);
7040 HANDLE (PASCAL
*pfn_WSACreateEvent
) (void);
7041 int (PASCAL
*pfn_WSACloseEvent
) (HANDLE hEvent
);
7042 int (PASCAL
*pfn_socket
) (int af
, int type
, int protocol
);
7043 int (PASCAL
*pfn_bind
) (SOCKET s
, const struct sockaddr
*addr
, int namelen
);
7044 int (PASCAL
*pfn_connect
) (SOCKET s
, const struct sockaddr
*addr
, int namelen
);
7045 int (PASCAL
*pfn_ioctlsocket
) (SOCKET s
, long cmd
, u_long
*argp
);
7046 int (PASCAL
*pfn_recv
) (SOCKET s
, char * buf
, int len
, int flags
);
7047 int (PASCAL
*pfn_send
) (SOCKET s
, const char * buf
, int len
, int flags
);
7048 int (PASCAL
*pfn_closesocket
) (SOCKET s
);
7049 int (PASCAL
*pfn_shutdown
) (SOCKET s
, int how
);
7050 int (PASCAL
*pfn_WSACleanup
) (void);
7052 u_short (PASCAL
*pfn_htons
) (u_short hostshort
);
7053 u_short (PASCAL
*pfn_ntohs
) (u_short netshort
);
7054 unsigned long (PASCAL
*pfn_inet_addr
) (const char * cp
);
7055 int (PASCAL
*pfn_gethostname
) (char * name
, int namelen
);
7056 struct hostent
* (PASCAL
*pfn_gethostbyname
) (const char * name
);
7057 struct servent
* (PASCAL
*pfn_getservbyname
) (const char * name
, const char * proto
);
7058 int (PASCAL
*pfn_getpeername
) (SOCKET s
, struct sockaddr
*addr
, int * namelen
);
7059 int (PASCAL
*pfn_setsockopt
) (SOCKET s
, int level
, int optname
,
7060 const char * optval
, int optlen
);
7061 int (PASCAL
*pfn_listen
) (SOCKET s
, int backlog
);
7062 int (PASCAL
*pfn_getsockname
) (SOCKET s
, struct sockaddr
* name
,
7064 SOCKET (PASCAL
*pfn_accept
) (SOCKET s
, struct sockaddr
* addr
, int * addrlen
);
7065 int (PASCAL
*pfn_recvfrom
) (SOCKET s
, char * buf
, int len
, int flags
,
7066 struct sockaddr
* from
, int * fromlen
);
7067 int (PASCAL
*pfn_sendto
) (SOCKET s
, const char * buf
, int len
, int flags
,
7068 const struct sockaddr
* to
, int tolen
);
7070 /* SetHandleInformation is only needed to make sockets non-inheritable. */
7071 BOOL (WINAPI
*pfn_SetHandleInformation
) (HANDLE object
, DWORD mask
, DWORD flags
);
7072 #ifndef HANDLE_FLAG_INHERIT
7073 #define HANDLE_FLAG_INHERIT 1
7077 static int winsock_inuse
;
7082 if (winsock_lib
!= NULL
&& winsock_inuse
== 0)
7084 release_listen_threads ();
7085 /* Not sure what would cause WSAENETDOWN, or even if it can happen
7086 after WSAStartup returns successfully, but it seems reasonable
7087 to allow unloading winsock anyway in that case. */
7088 if (pfn_WSACleanup () == 0 ||
7089 pfn_WSAGetLastError () == WSAENETDOWN
)
7091 if (FreeLibrary (winsock_lib
))
7100 init_winsock (int load_now
)
7102 WSADATA winsockData
;
7104 if (winsock_lib
!= NULL
)
7107 pfn_SetHandleInformation
7108 = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"),
7109 "SetHandleInformation");
7111 winsock_lib
= LoadLibrary ("Ws2_32.dll");
7113 if (winsock_lib
!= NULL
)
7115 /* dynamically link to socket functions */
7117 #define LOAD_PROC(fn) \
7118 if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \
7121 LOAD_PROC (WSAStartup
);
7122 LOAD_PROC (WSASetLastError
);
7123 LOAD_PROC (WSAGetLastError
);
7124 LOAD_PROC (WSAEventSelect
);
7125 LOAD_PROC (WSACreateEvent
);
7126 LOAD_PROC (WSACloseEvent
);
7129 LOAD_PROC (connect
);
7130 LOAD_PROC (ioctlsocket
);
7133 LOAD_PROC (closesocket
);
7134 LOAD_PROC (shutdown
);
7137 LOAD_PROC (inet_addr
);
7138 LOAD_PROC (gethostname
);
7139 LOAD_PROC (gethostbyname
);
7140 LOAD_PROC (getservbyname
);
7141 LOAD_PROC (getpeername
);
7142 LOAD_PROC (WSACleanup
);
7143 LOAD_PROC (setsockopt
);
7145 LOAD_PROC (getsockname
);
7147 LOAD_PROC (recvfrom
);
7151 /* specify version 1.1 of winsock */
7152 if (pfn_WSAStartup (0x101, &winsockData
) == 0)
7154 if (winsockData
.wVersion
!= 0x101)
7159 /* Report that winsock exists and is usable, but leave
7160 socket functions disabled. I am assuming that calling
7161 WSAStartup does not require any network interaction,
7162 and in particular does not cause or require a dial-up
7163 connection to be established. */
7166 FreeLibrary (winsock_lib
);
7174 FreeLibrary (winsock_lib
);
7184 /* Function to map winsock error codes to errno codes for those errno
7185 code defined in errno.h (errno values not defined by errno.h are
7186 already in nt/inc/sys/socket.h). */
7193 if (winsock_lib
== NULL
)
7196 wsa_err
= pfn_WSAGetLastError ();
7200 case WSAEACCES
: errno
= EACCES
; break;
7201 case WSAEBADF
: errno
= EBADF
; break;
7202 case WSAEFAULT
: errno
= EFAULT
; break;
7203 case WSAEINTR
: errno
= EINTR
; break;
7204 case WSAEINVAL
: errno
= EINVAL
; break;
7205 case WSAEMFILE
: errno
= EMFILE
; break;
7206 case WSAENAMETOOLONG
: errno
= ENAMETOOLONG
; break;
7207 case WSAENOTEMPTY
: errno
= ENOTEMPTY
; break;
7208 default: errno
= wsa_err
; break;
7216 if (winsock_lib
!= NULL
)
7217 pfn_WSASetLastError (0);
7220 /* Extend strerror to handle the winsock-specific error codes. */
7224 } _wsa_errlist
[] = {
7225 {WSAEINTR
, "Interrupted function call"},
7226 {WSAEBADF
, "Bad file descriptor"},
7227 {WSAEACCES
, "Permission denied"},
7228 {WSAEFAULT
, "Bad address"},
7229 {WSAEINVAL
, "Invalid argument"},
7230 {WSAEMFILE
, "Too many open files"},
7232 {WSAEWOULDBLOCK
, "Resource temporarily unavailable"},
7233 {WSAEINPROGRESS
, "Operation now in progress"},
7234 {WSAEALREADY
, "Operation already in progress"},
7235 {WSAENOTSOCK
, "Socket operation on non-socket"},
7236 {WSAEDESTADDRREQ
, "Destination address required"},
7237 {WSAEMSGSIZE
, "Message too long"},
7238 {WSAEPROTOTYPE
, "Protocol wrong type for socket"},
7239 {WSAENOPROTOOPT
, "Bad protocol option"},
7240 {WSAEPROTONOSUPPORT
, "Protocol not supported"},
7241 {WSAESOCKTNOSUPPORT
, "Socket type not supported"},
7242 {WSAEOPNOTSUPP
, "Operation not supported"},
7243 {WSAEPFNOSUPPORT
, "Protocol family not supported"},
7244 {WSAEAFNOSUPPORT
, "Address family not supported by protocol family"},
7245 {WSAEADDRINUSE
, "Address already in use"},
7246 {WSAEADDRNOTAVAIL
, "Cannot assign requested address"},
7247 {WSAENETDOWN
, "Network is down"},
7248 {WSAENETUNREACH
, "Network is unreachable"},
7249 {WSAENETRESET
, "Network dropped connection on reset"},
7250 {WSAECONNABORTED
, "Software caused connection abort"},
7251 {WSAECONNRESET
, "Connection reset by peer"},
7252 {WSAENOBUFS
, "No buffer space available"},
7253 {WSAEISCONN
, "Socket is already connected"},
7254 {WSAENOTCONN
, "Socket is not connected"},
7255 {WSAESHUTDOWN
, "Cannot send after socket shutdown"},
7256 {WSAETOOMANYREFS
, "Too many references"}, /* not sure */
7257 {WSAETIMEDOUT
, "Connection timed out"},
7258 {WSAECONNREFUSED
, "Connection refused"},
7259 {WSAELOOP
, "Network loop"}, /* not sure */
7260 {WSAENAMETOOLONG
, "Name is too long"},
7261 {WSAEHOSTDOWN
, "Host is down"},
7262 {WSAEHOSTUNREACH
, "No route to host"},
7263 {WSAENOTEMPTY
, "Buffer not empty"}, /* not sure */
7264 {WSAEPROCLIM
, "Too many processes"},
7265 {WSAEUSERS
, "Too many users"}, /* not sure */
7266 {WSAEDQUOT
, "Double quote in host name"}, /* really not sure */
7267 {WSAESTALE
, "Data is stale"}, /* not sure */
7268 {WSAEREMOTE
, "Remote error"}, /* not sure */
7270 {WSASYSNOTREADY
, "Network subsystem is unavailable"},
7271 {WSAVERNOTSUPPORTED
, "WINSOCK.DLL version out of range"},
7272 {WSANOTINITIALISED
, "Winsock not initialized successfully"},
7273 {WSAEDISCON
, "Graceful shutdown in progress"},
7275 {WSAENOMORE
, "No more operations allowed"}, /* not sure */
7276 {WSAECANCELLED
, "Operation cancelled"}, /* not sure */
7277 {WSAEINVALIDPROCTABLE
, "Invalid procedure table from service provider"},
7278 {WSAEINVALIDPROVIDER
, "Invalid service provider version number"},
7279 {WSAEPROVIDERFAILEDINIT
, "Unable to initialize a service provider"},
7280 {WSASYSCALLFAILURE
, "System call failure"},
7281 {WSASERVICE_NOT_FOUND
, "Service not found"}, /* not sure */
7282 {WSATYPE_NOT_FOUND
, "Class type not found"},
7283 {WSA_E_NO_MORE
, "No more resources available"}, /* really not sure */
7284 {WSA_E_CANCELLED
, "Operation already cancelled"}, /* really not sure */
7285 {WSAEREFUSED
, "Operation refused"}, /* not sure */
7288 {WSAHOST_NOT_FOUND
, "Host not found"},
7289 {WSATRY_AGAIN
, "Authoritative host not found during name lookup"},
7290 {WSANO_RECOVERY
, "Non-recoverable error during name lookup"},
7291 {WSANO_DATA
, "Valid name, no data record of requested type"},
7297 sys_strerror (int error_no
)
7300 static char unknown_msg
[40];
7302 if (error_no
>= 0 && error_no
< sys_nerr
)
7303 return sys_errlist
[error_no
];
7305 for (i
= 0; _wsa_errlist
[i
].errnum
>= 0; i
++)
7306 if (_wsa_errlist
[i
].errnum
== error_no
)
7307 return _wsa_errlist
[i
].msg
;
7309 sprintf (unknown_msg
, "Unidentified error: %d", error_no
);
7313 /* [andrewi 3-May-96] I've had conflicting results using both methods,
7314 but I believe the method of keeping the socket handle separate (and
7315 insuring it is not inheritable) is the correct one. */
7317 #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd)
7319 static int socket_to_fd (SOCKET s
);
7322 sys_socket (int af
, int type
, int protocol
)
7326 if (winsock_lib
== NULL
)
7329 return INVALID_SOCKET
;
7334 /* call the real socket function */
7335 s
= pfn_socket (af
, type
, protocol
);
7337 if (s
!= INVALID_SOCKET
)
7338 return socket_to_fd (s
);
7344 /* Convert a SOCKET to a file descriptor. */
7346 socket_to_fd (SOCKET s
)
7351 /* Although under NT 3.5 _open_osfhandle will accept a socket
7352 handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT,
7353 that does not work under NT 3.1. However, we can get the same
7354 effect by using a backdoor function to replace an existing
7355 descriptor handle with the one we want. */
7357 /* allocate a file descriptor (with appropriate flags) */
7358 fd
= _open ("NUL:", _O_RDWR
);
7361 /* Make a non-inheritable copy of the socket handle. Note
7362 that it is possible that sockets aren't actually kernel
7363 handles, which appears to be the case on Windows 9x when
7364 the MS Proxy winsock client is installed. */
7366 /* Apparently there is a bug in NT 3.51 with some service
7367 packs, which prevents using DuplicateHandle to make a
7368 socket handle non-inheritable (causes WSACleanup to
7369 hang). The work-around is to use SetHandleInformation
7370 instead if it is available and implemented. */
7371 if (pfn_SetHandleInformation
)
7373 pfn_SetHandleInformation ((HANDLE
) s
, HANDLE_FLAG_INHERIT
, 0);
7377 HANDLE parent
= GetCurrentProcess ();
7378 HANDLE new_s
= INVALID_HANDLE_VALUE
;
7380 if (DuplicateHandle (parent
,
7386 DUPLICATE_SAME_ACCESS
))
7388 /* It is possible that DuplicateHandle succeeds even
7389 though the socket wasn't really a kernel handle,
7390 because a real handle has the same value. So
7391 test whether the new handle really is a socket. */
7392 long nonblocking
= 0;
7393 if (pfn_ioctlsocket ((SOCKET
) new_s
, FIONBIO
, &nonblocking
) == 0)
7395 pfn_closesocket (s
);
7400 CloseHandle (new_s
);
7405 eassert (fd
< MAXDESC
);
7406 fd_info
[fd
].hnd
= (HANDLE
) s
;
7408 /* set our own internal flags */
7409 fd_info
[fd
].flags
= FILE_SOCKET
| FILE_BINARY
| FILE_READ
| FILE_WRITE
;
7415 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
7417 /* attach child_process to fd_info */
7418 if (fd_info
[ fd
].cp
!= NULL
)
7420 DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd
));
7424 fd_info
[ fd
].cp
= cp
;
7427 winsock_inuse
++; /* count open sockets */
7435 pfn_closesocket (s
);
7441 sys_bind (int s
, const struct sockaddr
* addr
, int namelen
)
7443 if (winsock_lib
== NULL
)
7446 return SOCKET_ERROR
;
7450 if (fd_info
[s
].flags
& FILE_SOCKET
)
7452 int rc
= pfn_bind (SOCK_HANDLE (s
), addr
, namelen
);
7453 if (rc
== SOCKET_ERROR
)
7458 return SOCKET_ERROR
;
7462 sys_connect (int s
, const struct sockaddr
* name
, int namelen
)
7464 if (winsock_lib
== NULL
)
7467 return SOCKET_ERROR
;
7471 if (fd_info
[s
].flags
& FILE_SOCKET
)
7473 int rc
= pfn_connect (SOCK_HANDLE (s
), name
, namelen
);
7474 if (rc
== SOCKET_ERROR
)
7479 return SOCKET_ERROR
;
7483 sys_htons (u_short hostshort
)
7485 return (winsock_lib
!= NULL
) ?
7486 pfn_htons (hostshort
) : hostshort
;
7490 sys_ntohs (u_short netshort
)
7492 return (winsock_lib
!= NULL
) ?
7493 pfn_ntohs (netshort
) : netshort
;
7497 sys_inet_addr (const char * cp
)
7499 return (winsock_lib
!= NULL
) ?
7500 pfn_inet_addr (cp
) : INADDR_NONE
;
7504 sys_gethostname (char * name
, int namelen
)
7506 if (winsock_lib
!= NULL
)
7511 retval
= pfn_gethostname (name
, namelen
);
7512 if (retval
== SOCKET_ERROR
)
7517 if (namelen
> MAX_COMPUTERNAME_LENGTH
)
7518 return !GetComputerName (name
, (DWORD
*)&namelen
);
7521 return SOCKET_ERROR
;
7525 sys_gethostbyname (const char * name
)
7527 struct hostent
* host
;
7528 int h_err
= h_errno
;
7530 if (winsock_lib
== NULL
)
7532 h_errno
= NO_RECOVERY
;
7538 host
= pfn_gethostbyname (name
);
7550 sys_getservbyname (const char * name
, const char * proto
)
7552 struct servent
* serv
;
7554 if (winsock_lib
== NULL
)
7561 serv
= pfn_getservbyname (name
, proto
);
7568 sys_getpeername (int s
, struct sockaddr
*addr
, int * namelen
)
7570 if (winsock_lib
== NULL
)
7573 return SOCKET_ERROR
;
7577 if (fd_info
[s
].flags
& FILE_SOCKET
)
7579 int rc
= pfn_getpeername (SOCK_HANDLE (s
), addr
, namelen
);
7580 if (rc
== SOCKET_ERROR
)
7585 return SOCKET_ERROR
;
7589 sys_shutdown (int s
, int how
)
7591 if (winsock_lib
== NULL
)
7594 return SOCKET_ERROR
;
7598 if (fd_info
[s
].flags
& FILE_SOCKET
)
7600 int rc
= pfn_shutdown (SOCK_HANDLE (s
), how
);
7601 if (rc
== SOCKET_ERROR
)
7606 return SOCKET_ERROR
;
7610 sys_setsockopt (int s
, int level
, int optname
, const void * optval
, int optlen
)
7612 if (winsock_lib
== NULL
)
7615 return SOCKET_ERROR
;
7619 if (fd_info
[s
].flags
& FILE_SOCKET
)
7621 int rc
= pfn_setsockopt (SOCK_HANDLE (s
), level
, optname
,
7622 (const char *)optval
, optlen
);
7623 if (rc
== SOCKET_ERROR
)
7628 return SOCKET_ERROR
;
7632 sys_listen (int s
, int backlog
)
7634 if (winsock_lib
== NULL
)
7637 return SOCKET_ERROR
;
7641 if (fd_info
[s
].flags
& FILE_SOCKET
)
7643 int rc
= pfn_listen (SOCK_HANDLE (s
), backlog
);
7644 if (rc
== SOCKET_ERROR
)
7647 fd_info
[s
].flags
|= FILE_LISTEN
;
7651 return SOCKET_ERROR
;
7655 sys_getsockname (int s
, struct sockaddr
* name
, int * namelen
)
7657 if (winsock_lib
== NULL
)
7660 return SOCKET_ERROR
;
7664 if (fd_info
[s
].flags
& FILE_SOCKET
)
7666 int rc
= pfn_getsockname (SOCK_HANDLE (s
), name
, namelen
);
7667 if (rc
== SOCKET_ERROR
)
7672 return SOCKET_ERROR
;
7676 sys_accept (int s
, struct sockaddr
* addr
, int * addrlen
)
7678 if (winsock_lib
== NULL
)
7685 if (fd_info
[s
].flags
& FILE_LISTEN
)
7687 SOCKET t
= pfn_accept (SOCK_HANDLE (s
), addr
, addrlen
);
7689 if (t
== INVALID_SOCKET
)
7692 fd
= socket_to_fd (t
);
7696 fd_info
[s
].cp
->status
= STATUS_READ_ACKNOWLEDGED
;
7697 ResetEvent (fd_info
[s
].cp
->char_avail
);
7706 sys_recvfrom (int s
, char * buf
, int len
, int flags
,
7707 struct sockaddr
* from
, int * fromlen
)
7709 if (winsock_lib
== NULL
)
7712 return SOCKET_ERROR
;
7716 if (fd_info
[s
].flags
& FILE_SOCKET
)
7718 int rc
= pfn_recvfrom (SOCK_HANDLE (s
), buf
, len
, flags
, from
, fromlen
);
7719 if (rc
== SOCKET_ERROR
)
7724 return SOCKET_ERROR
;
7728 sys_sendto (int s
, const char * buf
, int len
, int flags
,
7729 const struct sockaddr
* to
, int tolen
)
7731 if (winsock_lib
== NULL
)
7734 return SOCKET_ERROR
;
7738 if (fd_info
[s
].flags
& FILE_SOCKET
)
7740 int rc
= pfn_sendto (SOCK_HANDLE (s
), buf
, len
, flags
, to
, tolen
);
7741 if (rc
== SOCKET_ERROR
)
7746 return SOCKET_ERROR
;
7749 /* Windows does not have an fcntl function. Provide an implementation
7750 good enough for Emacs. */
7752 fcntl (int s
, int cmd
, int options
)
7754 /* In the w32 Emacs port, fcntl (fd, F_DUPFD_CLOEXEC, fd1) is always
7755 invoked in a context where fd1 is closed and all descriptors less
7756 than fd1 are open, so sys_dup is an adequate implementation. */
7757 if (cmd
== F_DUPFD_CLOEXEC
)
7761 if (fd_info
[s
].flags
& FILE_SOCKET
)
7763 if (winsock_lib
== NULL
)
7769 if (cmd
== F_SETFL
&& options
== O_NONBLOCK
)
7771 unsigned long nblock
= 1;
7772 int rc
= pfn_ioctlsocket (SOCK_HANDLE (s
), FIONBIO
, &nblock
);
7773 if (rc
== SOCKET_ERROR
)
7775 /* Keep track of the fact that we set this to non-blocking. */
7776 fd_info
[s
].flags
|= FILE_NDELAY
;
7782 return SOCKET_ERROR
;
7785 else if ((fd_info
[s
].flags
& (FILE_PIPE
| FILE_WRITE
))
7786 == (FILE_PIPE
| FILE_WRITE
))
7788 /* Force our writes to pipes be non-blocking. */
7789 if (cmd
== F_SETFL
&& options
== O_NONBLOCK
)
7791 HANDLE h
= (HANDLE
)_get_osfhandle (s
);
7792 DWORD pipe_mode
= PIPE_NOWAIT
;
7794 if (!SetNamedPipeHandleState (h
, &pipe_mode
, NULL
, NULL
))
7796 DebPrint (("SetNamedPipeHandleState: %lu\n", GetLastError ()));
7797 return SOCKET_ERROR
;
7799 fd_info
[s
].flags
|= FILE_NDELAY
;
7805 return SOCKET_ERROR
;
7809 return SOCKET_ERROR
;
7813 /* Shadow main io functions: we need to handle pipes and sockets more
7827 if (fd
< MAXDESC
&& fd_info
[fd
].cp
)
7829 child_process
* cp
= fd_info
[fd
].cp
;
7831 fd_info
[fd
].cp
= NULL
;
7833 if (CHILD_ACTIVE (cp
))
7835 /* if last descriptor to active child_process then cleanup */
7837 for (i
= 0; i
< MAXDESC
; i
++)
7841 if (fd_info
[i
].cp
== cp
)
7846 if (fd_info
[fd
].flags
& FILE_SOCKET
)
7848 if (winsock_lib
== NULL
) emacs_abort ();
7850 pfn_shutdown (SOCK_HANDLE (fd
), 2);
7851 rc
= pfn_closesocket (SOCK_HANDLE (fd
));
7853 winsock_inuse
--; /* count open sockets */
7855 /* If the process handle is NULL, it's either a socket
7856 or serial connection, or a subprocess that was
7857 already reaped by reap_subprocess, but whose
7858 resources were not yet freed, because its output was
7859 not fully read yet by the time it was reaped. (This
7860 usually happens with async subprocesses whose output
7861 is being read by Emacs.) Otherwise, this process was
7862 not reaped yet, so we set its FD to a negative value
7863 to make sure sys_select will eventually get to
7864 calling the SIGCHLD handler for it, which will then
7865 invoke waitpid and reap_subprocess. */
7866 if (cp
->procinfo
.hProcess
== NULL
)
7874 if (fd
>= 0 && fd
< MAXDESC
)
7875 fd_info
[fd
].flags
= 0;
7877 /* Note that sockets do not need special treatment here (at least on
7878 NT and Windows 95 using the standard tcp/ip stacks) - it appears that
7879 closesocket is equivalent to CloseHandle, which is to be expected
7880 because socket handles are fully fledged kernel handles. */
7892 if (new_fd
>= 0 && new_fd
< MAXDESC
)
7894 /* duplicate our internal info as well */
7895 fd_info
[new_fd
] = fd_info
[fd
];
7901 sys_dup2 (int src
, int dst
)
7905 if (dst
< 0 || dst
>= MAXDESC
)
7911 /* make sure we close the destination first if it's a pipe or socket */
7912 if (src
!= dst
&& fd_info
[dst
].flags
!= 0)
7915 rc
= _dup2 (src
, dst
);
7918 /* duplicate our internal info as well */
7919 fd_info
[dst
] = fd_info
[src
];
7925 pipe2 (int * phandles
, int pipe2_flags
)
7930 eassert (pipe2_flags
== (O_BINARY
| O_CLOEXEC
));
7932 /* make pipe handles non-inheritable; when we spawn a child, we
7933 replace the relevant handle with an inheritable one. Also put
7934 pipes into binary mode; we will do text mode translation ourselves
7936 rc
= _pipe (phandles
, 0, _O_NOINHERIT
| _O_BINARY
);
7940 /* Protect against overflow, since Windows can open more handles than
7941 our fd_info array has room for. */
7942 if (phandles
[0] >= MAXDESC
|| phandles
[1] >= MAXDESC
)
7944 _close (phandles
[0]);
7945 _close (phandles
[1]);
7951 flags
= FILE_PIPE
| FILE_READ
| FILE_BINARY
;
7952 fd_info
[phandles
[0]].flags
= flags
;
7954 flags
= FILE_PIPE
| FILE_WRITE
| FILE_BINARY
;
7955 fd_info
[phandles
[1]].flags
= flags
;
7962 /* Function to do blocking read of one byte, needed to implement
7963 select. It is only allowed on communication ports, sockets, or
7966 _sys_read_ahead (int fd
)
7971 if (fd
< 0 || fd
>= MAXDESC
)
7972 return STATUS_READ_ERROR
;
7974 cp
= fd_info
[fd
].cp
;
7976 if (cp
== NULL
|| cp
->fd
!= fd
|| cp
->status
!= STATUS_READ_READY
)
7977 return STATUS_READ_ERROR
;
7979 if ((fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SERIAL
| FILE_SOCKET
)) == 0
7980 || (fd_info
[fd
].flags
& FILE_READ
) == 0)
7982 DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe, serial port, or socket!\n", fd
));
7986 cp
->status
= STATUS_READ_IN_PROGRESS
;
7988 if (fd_info
[fd
].flags
& FILE_PIPE
)
7990 rc
= _read (fd
, &cp
->chr
, sizeof (char));
7992 /* Give subprocess time to buffer some more output for us before
7993 reporting that input is available; we need this because Windows 95
7994 connects DOS programs to pipes by making the pipe appear to be
7995 the normal console stdout - as a result most DOS programs will
7996 write to stdout without buffering, ie. one character at a
7997 time. Even some W32 programs do this - "dir" in a command
7998 shell on NT is very slow if we don't do this. */
8001 int wait
= w32_pipe_read_delay
;
8007 /* Yield remainder of our time slice, effectively giving a
8008 temporary priority boost to the child process. */
8012 else if (fd_info
[fd
].flags
& FILE_SERIAL
)
8014 HANDLE hnd
= fd_info
[fd
].hnd
;
8015 OVERLAPPED
*ovl
= &fd_info
[fd
].cp
->ovl_read
;
8018 /* Configure timeouts for blocking read. */
8019 if (!GetCommTimeouts (hnd
, &ct
))
8021 cp
->status
= STATUS_READ_ERROR
;
8022 return STATUS_READ_ERROR
;
8024 ct
.ReadIntervalTimeout
= 0;
8025 ct
.ReadTotalTimeoutMultiplier
= 0;
8026 ct
.ReadTotalTimeoutConstant
= 0;
8027 if (!SetCommTimeouts (hnd
, &ct
))
8029 cp
->status
= STATUS_READ_ERROR
;
8030 return STATUS_READ_ERROR
;
8033 if (!ReadFile (hnd
, &cp
->chr
, sizeof (char), (DWORD
*) &rc
, ovl
))
8035 if (GetLastError () != ERROR_IO_PENDING
)
8037 cp
->status
= STATUS_READ_ERROR
;
8038 return STATUS_READ_ERROR
;
8040 if (!GetOverlappedResult (hnd
, ovl
, (DWORD
*) &rc
, TRUE
))
8042 cp
->status
= STATUS_READ_ERROR
;
8043 return STATUS_READ_ERROR
;
8047 else if (fd_info
[fd
].flags
& FILE_SOCKET
)
8049 unsigned long nblock
= 0;
8050 /* We always want this to block, so temporarily disable NDELAY. */
8051 if (fd_info
[fd
].flags
& FILE_NDELAY
)
8052 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
8054 rc
= pfn_recv (SOCK_HANDLE (fd
), &cp
->chr
, sizeof (char), 0);
8056 if (fd_info
[fd
].flags
& FILE_NDELAY
)
8059 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
8063 if (rc
== sizeof (char))
8064 cp
->status
= STATUS_READ_SUCCEEDED
;
8066 cp
->status
= STATUS_READ_FAILED
;
8072 _sys_wait_accept (int fd
)
8078 if (fd
< 0 || fd
>= MAXDESC
)
8079 return STATUS_READ_ERROR
;
8081 cp
= fd_info
[fd
].cp
;
8083 if (cp
== NULL
|| cp
->fd
!= fd
|| cp
->status
!= STATUS_READ_READY
)
8084 return STATUS_READ_ERROR
;
8086 cp
->status
= STATUS_READ_FAILED
;
8088 hEv
= pfn_WSACreateEvent ();
8089 rc
= pfn_WSAEventSelect (SOCK_HANDLE (fd
), hEv
, FD_ACCEPT
);
8090 if (rc
!= SOCKET_ERROR
)
8093 rc
= WaitForSingleObject (hEv
, 500);
8095 } while (rc
== WAIT_TIMEOUT
8096 && cp
->status
!= STATUS_READ_ERROR
8098 pfn_WSAEventSelect (SOCK_HANDLE (fd
), NULL
, 0);
8099 if (rc
== WAIT_OBJECT_0
)
8100 cp
->status
= STATUS_READ_SUCCEEDED
;
8102 pfn_WSACloseEvent (hEv
);
8108 sys_read (int fd
, char * buffer
, unsigned int count
)
8113 char * orig_buffer
= buffer
;
8121 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SOCKET
| FILE_SERIAL
))
8123 child_process
*cp
= fd_info
[fd
].cp
;
8125 if ((fd_info
[fd
].flags
& FILE_READ
) == 0)
8133 /* re-read CR carried over from last read */
8134 if (fd_info
[fd
].flags
& FILE_LAST_CR
)
8136 if (fd_info
[fd
].flags
& FILE_BINARY
) emacs_abort ();
8140 fd_info
[fd
].flags
&= ~FILE_LAST_CR
;
8143 /* presence of a child_process structure means we are operating in
8144 non-blocking mode - otherwise we just call _read directly.
8145 Note that the child_process structure might be missing because
8146 reap_subprocess has been called; in this case the pipe is
8147 already broken, so calling _read on it is okay. */
8150 int current_status
= cp
->status
;
8152 switch (current_status
)
8154 case STATUS_READ_FAILED
:
8155 case STATUS_READ_ERROR
:
8156 /* report normal EOF if nothing in buffer */
8158 fd_info
[fd
].flags
|= FILE_AT_EOF
;
8161 case STATUS_READ_READY
:
8162 case STATUS_READ_IN_PROGRESS
:
8163 DebPrint (("sys_read called when read is in progress\n"));
8164 errno
= EWOULDBLOCK
;
8167 case STATUS_READ_SUCCEEDED
:
8168 /* consume read-ahead char */
8169 *buffer
++ = cp
->chr
;
8172 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
8173 ResetEvent (cp
->char_avail
);
8175 case STATUS_READ_ACKNOWLEDGED
:
8179 DebPrint (("sys_read: bad status %d\n", current_status
));
8184 if (fd_info
[fd
].flags
& FILE_PIPE
)
8186 PeekNamedPipe ((HANDLE
) _get_osfhandle (fd
), NULL
, 0, NULL
, &waiting
, NULL
);
8187 to_read
= min (waiting
, (DWORD
) count
);
8190 nchars
+= _read (fd
, buffer
, to_read
);
8192 else if (fd_info
[fd
].flags
& FILE_SERIAL
)
8194 HANDLE hnd
= fd_info
[fd
].hnd
;
8195 OVERLAPPED
*ovl
= &fd_info
[fd
].cp
->ovl_read
;
8201 /* Configure timeouts for non-blocking read. */
8202 if (!GetCommTimeouts (hnd
, &ct
))
8207 ct
.ReadIntervalTimeout
= MAXDWORD
;
8208 ct
.ReadTotalTimeoutMultiplier
= 0;
8209 ct
.ReadTotalTimeoutConstant
= 0;
8210 if (!SetCommTimeouts (hnd
, &ct
))
8216 if (!ResetEvent (ovl
->hEvent
))
8221 if (!ReadFile (hnd
, buffer
, count
, (DWORD
*) &rc
, ovl
))
8223 if (GetLastError () != ERROR_IO_PENDING
)
8228 if (!GetOverlappedResult (hnd
, ovl
, (DWORD
*) &rc
, TRUE
))
8237 else /* FILE_SOCKET */
8239 if (winsock_lib
== NULL
) emacs_abort ();
8241 /* do the equivalent of a non-blocking read */
8242 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONREAD
, &waiting
);
8243 if (waiting
== 0 && nchars
== 0)
8245 errno
= EWOULDBLOCK
;
8251 /* always use binary mode for sockets */
8252 int res
= pfn_recv (SOCK_HANDLE (fd
), buffer
, count
, 0);
8253 if (res
== SOCKET_ERROR
)
8255 DebPrint (("sys_read.recv failed with error %d on socket %ld\n",
8256 pfn_WSAGetLastError (), SOCK_HANDLE (fd
)));
8266 int nread
= _read (fd
, buffer
, count
);
8269 else if (nchars
== 0)
8274 fd_info
[fd
].flags
|= FILE_AT_EOF
;
8275 /* Perform text mode translation if required. */
8276 else if ((fd_info
[fd
].flags
& FILE_BINARY
) == 0)
8278 nchars
= crlf_to_lf (nchars
, orig_buffer
);
8279 /* If buffer contains only CR, return that. To be absolutely
8280 sure we should attempt to read the next char, but in
8281 practice a CR to be followed by LF would not appear by
8282 itself in the buffer. */
8283 if (nchars
> 1 && orig_buffer
[nchars
- 1] == 0x0d)
8285 fd_info
[fd
].flags
|= FILE_LAST_CR
;
8291 nchars
= _read (fd
, buffer
, count
);
8296 /* From w32xfns.c */
8297 extern HANDLE interrupt_handle
;
8300 sys_write (int fd
, const void * buffer
, unsigned int count
)
8311 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SOCKET
| FILE_SERIAL
))
8313 if ((fd_info
[fd
].flags
& FILE_WRITE
) == 0)
8319 /* Perform text mode translation if required. */
8320 if ((fd_info
[fd
].flags
& FILE_BINARY
) == 0)
8323 const unsigned char * src
= buffer
;
8324 unsigned char * dst
;
8327 SAFE_NALLOCA (tmpbuf
, 2, count
);
8332 unsigned char *next
;
8333 /* Copy next line or remaining bytes. */
8334 next
= _memccpy (dst
, src
, '\n', nbytes
);
8337 /* Copied one line ending with '\n'. */
8338 int copied
= next
- dst
;
8341 /* Insert '\r' before '\n'. */
8348 /* Copied remaining partial line -> now finished. */
8355 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& FILE_SERIAL
)
8357 HANDLE hnd
= (HANDLE
) _get_osfhandle (fd
);
8358 OVERLAPPED
*ovl
= &fd_info
[fd
].cp
->ovl_write
;
8359 HANDLE wait_hnd
[2] = { interrupt_handle
, ovl
->hEvent
};
8362 /* This is async (a.k.a. "overlapped") I/O, so the return value
8363 of FALSE from WriteFile means either an error or the output
8364 will be completed asynchronously (ERROR_IO_PENDING). */
8365 if (!WriteFile (hnd
, buffer
, count
, (DWORD
*) &nchars
, ovl
))
8367 if (GetLastError () != ERROR_IO_PENDING
)
8374 /* Wait for the write to complete, and watch C-g while
8376 if (detect_input_pending ())
8377 active
= MsgWaitForMultipleObjects (2, wait_hnd
, FALSE
,
8378 INFINITE
, QS_ALLINPUT
);
8380 active
= WaitForMultipleObjects (2, wait_hnd
, FALSE
, INFINITE
);
8384 /* User pressed C-g, cancel write, then leave.
8385 Don't bother cleaning up as we may only get stuck
8386 in buggy drivers. */
8387 PurgeComm (hnd
, PURGE_TXABORT
| PURGE_TXCLEAR
);
8389 errno
= EIO
; /* Why not EINTR? */
8392 case WAIT_OBJECT_0
+ 1:
8393 if (!GetOverlappedResult (hnd
, ovl
, (DWORD
*) &nchars
, TRUE
))
8403 else if (fd
< MAXDESC
&& fd_info
[fd
].flags
& FILE_SOCKET
)
8405 unsigned long nblock
= 0;
8406 if (winsock_lib
== NULL
) emacs_abort ();
8408 /* TODO: implement select() properly so non-blocking I/O works. */
8409 /* For now, make sure the write blocks. */
8410 if (fd_info
[fd
].flags
& FILE_NDELAY
)
8411 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
8413 nchars
= pfn_send (SOCK_HANDLE (fd
), buffer
, count
, 0);
8415 /* Set the socket back to non-blocking if it was before,
8416 for other operations that support it. */
8417 if (fd_info
[fd
].flags
& FILE_NDELAY
)
8420 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
8423 if (nchars
== SOCKET_ERROR
)
8425 DebPrint (("sys_write.send failed with error %d on socket %ld\n",
8426 pfn_WSAGetLastError (), SOCK_HANDLE (fd
)));
8432 /* Some networked filesystems don't like too large writes, so
8433 break them into smaller chunks. See the Comments section of
8434 the MSDN documentation of WriteFile for details behind the
8435 choice of the value of CHUNK below. See also the thread
8436 http://thread.gmane.org/gmane.comp.version-control.git/145294
8437 in the git mailing list. */
8438 const unsigned char *p
= buffer
;
8439 const unsigned chunk
= 30 * 1024 * 1024;
8444 unsigned this_chunk
= count
< chunk
? count
: chunk
;
8445 int n
= _write (fd
, p
, this_chunk
);
8450 /* When there's no buffer space in a pipe that is in the
8451 non-blocking mode, _write returns ENOSPC. We return
8452 EAGAIN instead, which should trigger the logic in
8453 send_process that enters waiting loop and calls
8454 wait_reading_process_output to allow process input to
8455 be accepted during the wait. Those calls to
8456 wait_reading_process_output allow sys_select to
8457 notice when process input becomes available, thus
8458 avoiding deadlock whereby each side of the pipe is
8459 blocked on write, waiting for the other party to read
8460 its end of the pipe. */
8463 && ((fd_info
[fd
].flags
& (FILE_PIPE
| FILE_NDELAY
))
8464 == (FILE_PIPE
| FILE_NDELAY
)))
8469 else if (n
< this_chunk
)
8481 /* Emulation of SIOCGIFCONF and getifaddrs, see process.c. */
8483 extern Lisp_Object
conv_sockaddr_to_lisp (struct sockaddr
*, int);
8485 /* Return information about network interface IFNAME, or about all
8486 interfaces (if IFNAME is nil). */
8488 network_interface_get_info (Lisp_Object ifname
)
8490 ULONG ainfo_len
= sizeof (IP_ADAPTER_INFO
);
8491 IP_ADAPTER_INFO
*adapter
, *ainfo
= xmalloc (ainfo_len
);
8492 DWORD retval
= get_adapters_info (ainfo
, &ainfo_len
);
8493 Lisp_Object res
= Qnil
;
8495 if (retval
== ERROR_BUFFER_OVERFLOW
)
8497 ainfo
= xrealloc (ainfo
, ainfo_len
);
8498 retval
= get_adapters_info (ainfo
, &ainfo_len
);
8501 if (retval
== ERROR_SUCCESS
)
8503 int eth_count
= 0, tr_count
= 0, fddi_count
= 0, ppp_count
= 0;
8504 int sl_count
= 0, wlan_count
= 0, lo_count
= 0, ifx_count
= 0;
8506 struct sockaddr_in sa
;
8508 /* For the below, we need some winsock functions, so make sure
8509 the winsock DLL is loaded. If we cannot successfully load
8510 it, they will have no use of the information we provide,
8512 if (!winsock_lib
&& !init_winsock (1))
8515 for (adapter
= ainfo
; adapter
; adapter
= adapter
->Next
)
8517 char namebuf
[MAX_ADAPTER_NAME_LENGTH
+ 4];
8519 /* Present Unix-compatible interface names, instead of the
8520 Windows names, which are really GUIDs not readable by
8522 static const char *ifmt
[] = {
8523 "eth%d", "tr%d", "fddi%d", "ppp%d", "sl%d", "wlan%d",
8538 switch (adapter
->Type
)
8540 case MIB_IF_TYPE_ETHERNET
:
8541 /* Windows before Vista reports wireless adapters as
8542 Ethernet. Work around by looking at the Description
8544 if (strstr (adapter
->Description
, "Wireless "))
8547 if_num
= wlan_count
++;
8551 ifmt_idx
= ETHERNET
;
8552 if_num
= eth_count
++;
8555 case MIB_IF_TYPE_TOKENRING
:
8556 ifmt_idx
= TOKENRING
;
8557 if_num
= tr_count
++;
8559 case MIB_IF_TYPE_FDDI
:
8561 if_num
= fddi_count
++;
8563 case MIB_IF_TYPE_PPP
:
8565 if_num
= ppp_count
++;
8567 case MIB_IF_TYPE_SLIP
:
8569 if_num
= sl_count
++;
8571 case IF_TYPE_IEEE80211
:
8573 if_num
= wlan_count
++;
8575 case MIB_IF_TYPE_LOOPBACK
:
8578 ifmt_idx
= LOOPBACK
;
8579 if_num
= lo_count
++;
8585 ifmt_idx
= OTHER_IF
;
8586 if_num
= ifx_count
++;
8589 if (ifmt_idx
== NONE
)
8591 sprintf (namebuf
, ifmt
[ifmt_idx
], if_num
);
8593 sa
.sin_family
= AF_INET
;
8594 ip_addr
= sys_inet_addr (adapter
->IpAddressList
.IpAddress
.String
);
8595 if (ip_addr
== INADDR_NONE
)
8597 /* Bogus address, skip this interface. */
8600 sa
.sin_addr
.s_addr
= ip_addr
;
8603 res
= Fcons (Fcons (build_string (namebuf
),
8604 conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8605 sizeof (struct sockaddr
))),
8607 else if (strcmp (namebuf
, SSDATA (ifname
)) == 0)
8609 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
8610 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
8611 Lisp_Object flags
= Qnil
;
8615 /* Flags. We guess most of them by type, since the
8616 Windows flags are different and hard to get by. */
8617 flags
= Fcons (intern ("up"), flags
);
8618 if (ifmt_idx
== ETHERNET
|| ifmt_idx
== WLAN
)
8620 flags
= Fcons (intern ("broadcast"), flags
);
8621 flags
= Fcons (intern ("multicast"), flags
);
8623 flags
= Fcons (intern ("running"), flags
);
8624 if (ifmt_idx
== PPP
)
8626 flags
= Fcons (intern ("pointopoint"), flags
);
8627 flags
= Fcons (intern ("noarp"), flags
);
8629 if (adapter
->HaveWins
)
8630 flags
= Fcons (intern ("WINS"), flags
);
8631 if (adapter
->DhcpEnabled
)
8632 flags
= Fcons (intern ("dynamic"), flags
);
8634 res
= Fcons (flags
, res
);
8636 /* Hardware address and its family. */
8637 for (n
= 0; n
< adapter
->AddressLength
; n
++)
8638 p
->contents
[n
] = make_number ((int) adapter
->Address
[n
]);
8639 /* Windows does not support AF_LINK or AF_PACKET family
8640 of addresses. Use an arbitrary family number that is
8641 identical to what GNU/Linux returns. */
8642 res
= Fcons (Fcons (make_number (1), hwaddr
), res
);
8645 sa
.sin_family
= AF_INET
;
8646 net_mask
= sys_inet_addr (adapter
->IpAddressList
.IpMask
.String
);
8647 if (net_mask
!= INADDR_NONE
)
8649 sa
.sin_addr
.s_addr
= net_mask
;
8651 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8652 sizeof (struct sockaddr
)),
8656 res
= Fcons (Qnil
, res
);
8658 sa
.sin_family
= AF_INET
;
8659 if (ip_addr
!= INADDR_NONE
)
8661 /* Broadcast address is only reported by
8662 GetAdaptersAddresses, which is of limited
8663 availability. Generate it on our own. */
8664 u_long bcast_addr
= (ip_addr
& net_mask
) | ~net_mask
;
8666 sa
.sin_addr
.s_addr
= bcast_addr
;
8668 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8669 sizeof (struct sockaddr
)),
8673 sa
.sin_addr
.s_addr
= ip_addr
;
8675 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8676 sizeof (struct sockaddr
)),
8680 res
= Fcons (Qnil
, Fcons (Qnil
, res
));
8683 /* GetAdaptersInfo is documented to not report loopback
8684 interfaces, so we generate one out of thin air. */
8687 sa
.sin_family
= AF_INET
;
8691 sa
.sin_addr
.s_addr
= sys_inet_addr ("127.0.0.1");
8692 res
= Fcons (Fcons (build_string ("lo"),
8693 conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8694 sizeof (struct sockaddr
))),
8697 else if (strcmp (SSDATA (ifname
), "lo") == 0)
8699 res
= Fcons (Fcons (intern ("running"),
8700 Fcons (intern ("loopback"),
8701 Fcons (intern ("up"), Qnil
))), Qnil
);
8702 /* 772 is what 3 different GNU/Linux systems report for
8703 the loopback interface. */
8704 res
= Fcons (Fcons (make_number (772),
8705 Fmake_vector (make_number (6),
8708 sa
.sin_addr
.s_addr
= sys_inet_addr ("255.0.0.0");
8709 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8710 sizeof (struct sockaddr
)),
8712 sa
.sin_addr
.s_addr
= sys_inet_addr ("0.0.0.0");
8713 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8714 sizeof (struct sockaddr
)),
8716 sa
.sin_addr
.s_addr
= sys_inet_addr ("127.0.0.1");
8717 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8718 sizeof (struct sockaddr
)),
8731 network_interface_list (void)
8733 return network_interface_get_info (Qnil
);
8737 network_interface_info (Lisp_Object ifname
)
8739 CHECK_STRING (ifname
);
8740 return network_interface_get_info (ifname
);
8744 /* The Windows CRT functions are "optimized for speed", so they don't
8745 check for timezone and DST changes if they were last called less
8746 than 1 minute ago (see http://support.microsoft.com/kb/821231). So
8747 all Emacs features that repeatedly call time functions (e.g.,
8748 display-time) are in real danger of missing timezone and DST
8749 changes. Calling tzset before each localtime call fixes that. */
8751 sys_localtime (const time_t *t
)
8754 return localtime (t
);
8759 /* Try loading LIBRARY_ID from the file(s) specified in
8760 Vdynamic_library_alist. If the library is loaded successfully,
8761 return the handle of the DLL, and record the filename in the
8762 property :loaded-from of LIBRARY_ID. If the library could not be
8763 found, or when it was already loaded (because the handle is not
8764 recorded anywhere, and so is lost after use), return NULL.
8766 We could also save the handle in :loaded-from, but currently
8767 there's no use case for it. */
8769 w32_delayed_load (Lisp_Object library_id
)
8771 HMODULE dll_handle
= NULL
;
8773 CHECK_SYMBOL (library_id
);
8775 if (CONSP (Vdynamic_library_alist
)
8776 && NILP (Fassq (library_id
, Vlibrary_cache
)))
8778 Lisp_Object found
= Qnil
;
8779 Lisp_Object dlls
= Fassq (library_id
, Vdynamic_library_alist
);
8782 for (dlls
= XCDR (dlls
); CONSP (dlls
); dlls
= XCDR (dlls
))
8784 Lisp_Object dll
= XCAR (dlls
);
8785 char name
[MAX_UTF8_PATH
];
8789 dll
= ENCODE_FILE (dll
);
8790 if (w32_unicode_filenames
)
8792 wchar_t name_w
[MAX_PATH
];
8794 filename_to_utf16 (SSDATA (dll
), name_w
);
8795 dll_handle
= LoadLibraryW (name_w
);
8798 res
= GetModuleFileNameW (dll_handle
, name_w
,
8801 filename_from_utf16 (name_w
, name
);
8806 char name_a
[MAX_PATH
];
8808 filename_to_ansi (SSDATA (dll
), name_a
);
8809 dll_handle
= LoadLibraryA (name_a
);
8812 res
= GetModuleFileNameA (dll_handle
, name_a
,
8815 filename_from_ansi (name_a
, name
);
8820 ptrdiff_t len
= strlen (name
);
8823 /* Possibly truncated */
8824 ? make_specified_string (name
, -1, len
, 1)
8826 /* This prevents thread start and end notifications
8827 from being sent to the DLL, for every thread we
8828 start. We don't need those notifications because
8829 threads we create never use any of these DLLs, only
8830 the main thread uses them. This is supposed to
8831 speed up thread creation. */
8832 DisableThreadLibraryCalls (dll_handle
);
8837 Fput (library_id
, QCloaded_from
, found
);
8845 check_windows_init_file (void)
8847 /* A common indication that Emacs is not installed properly is when
8848 it cannot find the Windows installation file. If this file does
8849 not exist in the expected place, tell the user. */
8851 if (!noninteractive
&& !inhibit_window_system
8852 /* Vload_path is not yet initialized when we are loading
8854 && NILP (Vpurify_flag
))
8856 Lisp_Object init_file
;
8859 /* Implementation note: this function runs early during Emacs
8860 startup, before startup.el is run. So Vload_path is still in
8861 its initial unibyte form, but it holds UTF-8 encoded file
8862 names, since init_callproc was already called. So we do not
8863 need to ENCODE_FILE here, but we do need to convert the file
8864 names from UTF-8 to ANSI. */
8865 init_file
= build_string ("term/w32-win");
8866 fd
= openp (Vload_path
, init_file
, Fget_load_suffixes (), NULL
, Qnil
, 0);
8869 Lisp_Object load_path_print
= Fprin1_to_string (Vload_path
, Qnil
);
8870 char *init_file_name
= SDATA (init_file
);
8871 char *load_path
= SDATA (load_path_print
);
8872 char *buffer
= alloca (1024
8873 + strlen (init_file_name
)
8874 + strlen (load_path
));
8879 "The Emacs Windows initialization file \"%s.el\" "
8880 "could not be found in your Emacs installation. "
8881 "Emacs checked the following directories for this file:\n"
8883 "When Emacs cannot find this file, it usually means that it "
8884 "was not installed properly, or its distribution file was "
8885 "not unpacked properly.\nSee the README.W32 file in the "
8886 "top-level Emacs directory for more information.",
8887 init_file_name
, load_path
);
8888 needed
= pMultiByteToWideChar (CP_UTF8
, MB_ERR_INVALID_CHARS
, buffer
,
8892 wchar_t *msg_w
= alloca ((needed
+ 1) * sizeof (wchar_t));
8894 pMultiByteToWideChar (CP_UTF8
, MB_ERR_INVALID_CHARS
, buffer
, -1,
8896 needed
= pWideCharToMultiByte (CP_ACP
, 0, msg_w
, -1,
8897 NULL
, 0, NULL
, NULL
);
8900 char *msg_a
= alloca (needed
+ 1);
8902 pWideCharToMultiByte (CP_ACP
, 0, msg_w
, -1, msg_a
, needed
,
8909 "Emacs Abort Dialog",
8910 MB_OK
| MB_ICONEXCLAMATION
| MB_TASKMODAL
);
8911 /* Use the low-level system abort. */
8922 term_ntproc (int ignored
)
8928 /* shutdown the socket interface if necessary */
8935 init_ntproc (int dumping
)
8937 sigset_t initial_mask
= 0;
8939 /* Initialize the socket interface now if available and requested by
8940 the user by defining PRELOAD_WINSOCK; otherwise loading will be
8941 delayed until open-network-stream is called (w32-has-winsock can
8942 also be used to dynamically load or reload winsock).
8944 Conveniently, init_environment is called before us, so
8945 PRELOAD_WINSOCK can be set in the registry. */
8947 /* Always initialize this correctly. */
8950 if (getenv ("PRELOAD_WINSOCK") != NULL
)
8951 init_winsock (TRUE
);
8953 /* Initial preparation for subprocess support: replace our standard
8954 handles with non-inheritable versions. */
8957 HANDLE stdin_save
= INVALID_HANDLE_VALUE
;
8958 HANDLE stdout_save
= INVALID_HANDLE_VALUE
;
8959 HANDLE stderr_save
= INVALID_HANDLE_VALUE
;
8961 parent
= GetCurrentProcess ();
8963 /* ignore errors when duplicating and closing; typically the
8964 handles will be invalid when running as a gui program. */
8965 DuplicateHandle (parent
,
8966 GetStdHandle (STD_INPUT_HANDLE
),
8971 DUPLICATE_SAME_ACCESS
);
8973 DuplicateHandle (parent
,
8974 GetStdHandle (STD_OUTPUT_HANDLE
),
8979 DUPLICATE_SAME_ACCESS
);
8981 DuplicateHandle (parent
,
8982 GetStdHandle (STD_ERROR_HANDLE
),
8987 DUPLICATE_SAME_ACCESS
);
8993 if (stdin_save
!= INVALID_HANDLE_VALUE
)
8994 _open_osfhandle ((intptr_t) stdin_save
, O_TEXT
);
8996 _open ("nul", O_TEXT
| O_NOINHERIT
| O_RDONLY
);
8999 if (stdout_save
!= INVALID_HANDLE_VALUE
)
9000 _open_osfhandle ((intptr_t) stdout_save
, O_TEXT
);
9002 _open ("nul", O_TEXT
| O_NOINHERIT
| O_WRONLY
);
9005 if (stderr_save
!= INVALID_HANDLE_VALUE
)
9006 _open_osfhandle ((intptr_t) stderr_save
, O_TEXT
);
9008 _open ("nul", O_TEXT
| O_NOINHERIT
| O_WRONLY
);
9012 /* unfortunately, atexit depends on implementation of malloc */
9013 /* atexit (term_ntproc); */
9016 /* Make sure we start with all signals unblocked. */
9017 sigprocmask (SIG_SETMASK
, &initial_mask
, NULL
);
9018 signal (SIGABRT
, term_ntproc
);
9022 /* determine which drives are fixed, for GetCachedVolumeInformation */
9024 /* GetDriveType must have trailing backslash. */
9025 char drive
[] = "A:\\";
9027 /* Loop over all possible drive letters */
9028 while (*drive
<= 'Z')
9030 /* Record if this drive letter refers to a fixed drive. */
9031 fixed_drives
[DRIVE_INDEX (*drive
)] =
9032 (GetDriveType (drive
) == DRIVE_FIXED
);
9037 /* Reset the volume info cache. */
9038 volume_cache
= NULL
;
9043 shutdown_handler ensures that buffers' autosave files are
9044 up to date when the user logs off, or the system shuts down.
9047 shutdown_handler (DWORD type
)
9049 /* Ctrl-C and Ctrl-Break are already suppressed, so don't handle them. */
9050 if (type
== CTRL_CLOSE_EVENT
/* User closes console window. */
9051 || type
== CTRL_LOGOFF_EVENT
/* User logs off. */
9052 || type
== CTRL_SHUTDOWN_EVENT
) /* User shutsdown. */
9054 /* Shut down cleanly, making sure autosave files are up to date. */
9055 shut_down_emacs (0, Qnil
);
9058 /* Allow other handlers to handle this signal. */
9062 /* On Windows 9X, load UNICOWS.DLL and return its handle, or die. On
9063 NT, return a handle to GDI32.DLL. */
9065 maybe_load_unicows_dll (void)
9067 if (os_subtype
== OS_9X
)
9069 HANDLE ret
= LoadLibrary ("Unicows.dll");
9072 /* These two functions are present on Windows 9X as stubs
9073 that always fail. We need the real implementations from
9074 UNICOWS.DLL, so we must call these functions through
9075 pointers, and assign the correct addresses to these
9076 pointers at program startup (see emacs.c, which calls
9077 this function early on). */
9078 pMultiByteToWideChar
= GetProcAddress (ret
, "MultiByteToWideChar");
9079 pWideCharToMultiByte
= GetProcAddress (ret
, "WideCharToMultiByte");
9086 button
= MessageBox (NULL
,
9087 "Emacs cannot load the UNICOWS.DLL library.\n"
9088 "This library is essential for using Emacs\n"
9089 "on this system. You need to install it.\n\n"
9090 "Emacs will exit when you click OK.",
9091 "Emacs cannot load UNICOWS.DLL",
9092 MB_ICONERROR
| MB_TASKMODAL
9093 | MB_SETFOREGROUND
| MB_OK
);
9104 /* On NT family of Windows, these two functions are always
9105 linked in, so we just assign their addresses to the 2
9106 pointers; no need for the LoadLibrary dance. */
9107 pMultiByteToWideChar
= MultiByteToWideChar
;
9108 pWideCharToMultiByte
= WideCharToMultiByte
;
9109 return LoadLibrary ("Gdi32.dll");
9114 globals_of_w32 is used to initialize those global variables that
9115 must always be initialized on startup even when the global variable
9116 initialized is non zero (see the function main in emacs.c).
9119 globals_of_w32 (void)
9121 HMODULE kernel32
= GetModuleHandle ("kernel32.dll");
9123 get_process_times_fn
= (GetProcessTimes_Proc
)
9124 GetProcAddress (kernel32
, "GetProcessTimes");
9126 DEFSYM (QCloaded_from
, ":loaded-from");
9128 g_b_init_is_windows_9x
= 0;
9129 g_b_init_open_process_token
= 0;
9130 g_b_init_get_token_information
= 0;
9131 g_b_init_lookup_account_sid
= 0;
9132 g_b_init_get_sid_sub_authority
= 0;
9133 g_b_init_get_sid_sub_authority_count
= 0;
9134 g_b_init_get_security_info
= 0;
9135 g_b_init_get_file_security_w
= 0;
9136 g_b_init_get_file_security_a
= 0;
9137 g_b_init_get_security_descriptor_owner
= 0;
9138 g_b_init_get_security_descriptor_group
= 0;
9139 g_b_init_is_valid_sid
= 0;
9140 g_b_init_create_toolhelp32_snapshot
= 0;
9141 g_b_init_process32_first
= 0;
9142 g_b_init_process32_next
= 0;
9143 g_b_init_open_thread_token
= 0;
9144 g_b_init_impersonate_self
= 0;
9145 g_b_init_revert_to_self
= 0;
9146 g_b_init_get_process_memory_info
= 0;
9147 g_b_init_get_process_working_set_size
= 0;
9148 g_b_init_global_memory_status
= 0;
9149 g_b_init_global_memory_status_ex
= 0;
9150 g_b_init_equal_sid
= 0;
9151 g_b_init_copy_sid
= 0;
9152 g_b_init_get_length_sid
= 0;
9153 g_b_init_get_native_system_info
= 0;
9154 g_b_init_get_system_times
= 0;
9155 g_b_init_create_symbolic_link_w
= 0;
9156 g_b_init_create_symbolic_link_a
= 0;
9157 g_b_init_get_security_descriptor_dacl
= 0;
9158 g_b_init_convert_sd_to_sddl
= 0;
9159 g_b_init_convert_sddl_to_sd
= 0;
9160 g_b_init_is_valid_security_descriptor
= 0;
9161 g_b_init_set_file_security_w
= 0;
9162 g_b_init_set_file_security_a
= 0;
9163 g_b_init_set_named_security_info_w
= 0;
9164 g_b_init_set_named_security_info_a
= 0;
9165 g_b_init_get_adapters_info
= 0;
9166 g_b_init_compare_string_w
= 0;
9167 num_of_processors
= 0;
9168 /* The following sets a handler for shutdown notifications for
9169 console apps. This actually applies to Emacs in both console and
9170 GUI modes, since we had to fool windows into thinking emacs is a
9171 console application to get console mode to work. */
9172 SetConsoleCtrlHandler (shutdown_handler
, TRUE
);
9174 /* "None" is the default group name on standalone workstations. */
9175 strcpy (dflt_group_name
, "None");
9177 /* Reset, in case it has some value inherited from dump time. */
9178 w32_stat_get_owner_group
= 0;
9180 /* If w32_unicode_filenames is non-zero, we will be using Unicode
9181 (a.k.a. "wide") APIs to invoke functions that accept file
9183 if (is_windows_9x ())
9184 w32_unicode_filenames
= 0;
9186 w32_unicode_filenames
= 1;
9189 /* For make-serial-process */
9191 serial_open (Lisp_Object port_obj
)
9193 char *port
= SSDATA (port_obj
);
9198 hnd
= CreateFile (port
, GENERIC_READ
| GENERIC_WRITE
, 0, 0,
9199 OPEN_EXISTING
, FILE_FLAG_OVERLAPPED
, 0);
9200 if (hnd
== INVALID_HANDLE_VALUE
)
9201 error ("Could not open %s", port
);
9202 fd
= (int) _open_osfhandle ((intptr_t) hnd
, 0);
9204 error ("Could not open %s", port
);
9208 error ("Could not create child process");
9210 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
9211 fd_info
[ fd
].hnd
= hnd
;
9212 fd_info
[ fd
].flags
|=
9213 FILE_READ
| FILE_WRITE
| FILE_BINARY
| FILE_SERIAL
;
9214 if (fd_info
[ fd
].cp
!= NULL
)
9216 error ("fd_info[fd = %d] is already in use", fd
);
9218 fd_info
[ fd
].cp
= cp
;
9219 cp
->ovl_read
.hEvent
= CreateEvent (NULL
, TRUE
, FALSE
, NULL
);
9220 if (cp
->ovl_read
.hEvent
== NULL
)
9221 error ("Could not create read event");
9222 cp
->ovl_write
.hEvent
= CreateEvent (NULL
, TRUE
, FALSE
, NULL
);
9223 if (cp
->ovl_write
.hEvent
== NULL
)
9224 error ("Could not create write event");
9229 /* For serial-process-configure */
9231 serial_configure (struct Lisp_Process
*p
, Lisp_Object contact
)
9233 Lisp_Object childp2
= Qnil
;
9234 Lisp_Object tem
= Qnil
;
9238 char summary
[4] = "???"; /* This usually becomes "8N1". */
9240 if ((fd_info
[ p
->outfd
].flags
& FILE_SERIAL
) == 0)
9241 error ("Not a serial process");
9242 hnd
= fd_info
[ p
->outfd
].hnd
;
9244 childp2
= Fcopy_sequence (p
->childp
);
9246 /* Initialize timeouts for blocking read and blocking write. */
9247 if (!GetCommTimeouts (hnd
, &ct
))
9248 error ("GetCommTimeouts() failed");
9249 ct
.ReadIntervalTimeout
= 0;
9250 ct
.ReadTotalTimeoutMultiplier
= 0;
9251 ct
.ReadTotalTimeoutConstant
= 0;
9252 ct
.WriteTotalTimeoutMultiplier
= 0;
9253 ct
.WriteTotalTimeoutConstant
= 0;
9254 if (!SetCommTimeouts (hnd
, &ct
))
9255 error ("SetCommTimeouts() failed");
9256 /* Read port attributes and prepare default configuration. */
9257 memset (&dcb
, 0, sizeof (dcb
));
9258 dcb
.DCBlength
= sizeof (DCB
);
9259 if (!GetCommState (hnd
, &dcb
))
9260 error ("GetCommState() failed");
9263 dcb
.fAbortOnError
= FALSE
;
9264 /* dcb.XonLim and dcb.XoffLim are set by GetCommState() */
9269 /* Configure speed. */
9270 if (!NILP (Fplist_member (contact
, QCspeed
)))
9271 tem
= Fplist_get (contact
, QCspeed
);
9273 tem
= Fplist_get (p
->childp
, QCspeed
);
9275 dcb
.BaudRate
= XINT (tem
);
9276 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
9278 /* Configure bytesize. */
9279 if (!NILP (Fplist_member (contact
, QCbytesize
)))
9280 tem
= Fplist_get (contact
, QCbytesize
);
9282 tem
= Fplist_get (p
->childp
, QCbytesize
);
9284 tem
= make_number (8);
9286 if (XINT (tem
) != 7 && XINT (tem
) != 8)
9287 error (":bytesize must be nil (8), 7, or 8");
9288 dcb
.ByteSize
= XINT (tem
);
9289 summary
[0] = XINT (tem
) + '0';
9290 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
9292 /* Configure parity. */
9293 if (!NILP (Fplist_member (contact
, QCparity
)))
9294 tem
= Fplist_get (contact
, QCparity
);
9296 tem
= Fplist_get (p
->childp
, QCparity
);
9297 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
9298 error (":parity must be nil (no parity), `even', or `odd'");
9299 dcb
.fParity
= FALSE
;
9300 dcb
.Parity
= NOPARITY
;
9301 dcb
.fErrorChar
= FALSE
;
9306 else if (EQ (tem
, Qeven
))
9310 dcb
.Parity
= EVENPARITY
;
9311 dcb
.fErrorChar
= TRUE
;
9313 else if (EQ (tem
, Qodd
))
9317 dcb
.Parity
= ODDPARITY
;
9318 dcb
.fErrorChar
= TRUE
;
9320 childp2
= Fplist_put (childp2
, QCparity
, tem
);
9322 /* Configure stopbits. */
9323 if (!NILP (Fplist_member (contact
, QCstopbits
)))
9324 tem
= Fplist_get (contact
, QCstopbits
);
9326 tem
= Fplist_get (p
->childp
, QCstopbits
);
9328 tem
= make_number (1);
9330 if (XINT (tem
) != 1 && XINT (tem
) != 2)
9331 error (":stopbits must be nil (1 stopbit), 1, or 2");
9332 summary
[2] = XINT (tem
) + '0';
9333 if (XINT (tem
) == 1)
9334 dcb
.StopBits
= ONESTOPBIT
;
9335 else if (XINT (tem
) == 2)
9336 dcb
.StopBits
= TWOSTOPBITS
;
9337 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
9339 /* Configure flowcontrol. */
9340 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
9341 tem
= Fplist_get (contact
, QCflowcontrol
);
9343 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
9344 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
9345 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
9346 dcb
.fOutxCtsFlow
= FALSE
;
9347 dcb
.fOutxDsrFlow
= FALSE
;
9348 dcb
.fDtrControl
= DTR_CONTROL_DISABLE
;
9349 dcb
.fDsrSensitivity
= FALSE
;
9350 dcb
.fTXContinueOnXoff
= FALSE
;
9353 dcb
.fRtsControl
= RTS_CONTROL_DISABLE
;
9354 dcb
.XonChar
= 17; /* Control-Q */
9355 dcb
.XoffChar
= 19; /* Control-S */
9358 /* Already configured. */
9360 else if (EQ (tem
, Qhw
))
9362 dcb
.fRtsControl
= RTS_CONTROL_HANDSHAKE
;
9363 dcb
.fOutxCtsFlow
= TRUE
;
9365 else if (EQ (tem
, Qsw
))
9370 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
9372 /* Activate configuration. */
9373 if (!SetCommState (hnd
, &dcb
))
9374 error ("SetCommState() failed");
9376 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
9377 pset_childp (p
, childp2
);
9383 emacs_gnutls_pull (gnutls_transport_ptr_t p
, void* buf
, size_t sz
)
9386 struct Lisp_Process
*process
= (struct Lisp_Process
*)p
;
9387 int fd
= process
->infd
;
9389 n
= sys_read (fd
, (char*)buf
, sz
);
9396 /* Translate the WSAEWOULDBLOCK alias EWOULDBLOCK to EAGAIN. */
9397 if (err
== EWOULDBLOCK
)
9400 emacs_gnutls_transport_set_errno (process
->gnutls_state
, err
);
9406 emacs_gnutls_push (gnutls_transport_ptr_t p
, const void* buf
, size_t sz
)
9408 struct Lisp_Process
*process
= (struct Lisp_Process
*)p
;
9409 int fd
= process
->outfd
;
9410 ssize_t n
= sys_write (fd
, buf
, sz
);
9412 /* 0 or more bytes written means everything went fine. */
9416 /* Negative bytes written means we got an error in errno.
9417 Translate the WSAEWOULDBLOCK alias EWOULDBLOCK to EAGAIN. */
9418 emacs_gnutls_transport_set_errno (process
->gnutls_state
,
9419 errno
== EWOULDBLOCK
? EAGAIN
: errno
);
9423 #endif /* HAVE_GNUTLS */