1 /* Utility and Unix shadow routines for GNU Emacs on the Microsoft Windows API.
3 Copyright (C) 1994-1995, 2000-2014 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 (_W64) defines these in its _mingw.h. */
76 #if defined(__GNUC__) && !defined(_W64)
77 #define _ANONYMOUS_UNION
78 #define _ANONYMOUS_STRUCT
81 /* Some versions of compiler define MEMORYSTATUSEX, some don't, so we
82 use a different name to avoid compilation problems. */
83 typedef struct _MEMORY_STATUS_EX
{
86 DWORDLONG ullTotalPhys
;
87 DWORDLONG ullAvailPhys
;
88 DWORDLONG ullTotalPageFile
;
89 DWORDLONG ullAvailPageFile
;
90 DWORDLONG ullTotalVirtual
;
91 DWORDLONG ullAvailVirtual
;
92 DWORDLONG ullAvailExtendedVirtual
;
93 } MEMORY_STATUS_EX
,*LPMEMORY_STATUS_EX
;
95 /* These are here so that GDB would know about these data types. This
96 allows to attach GDB to Emacs when a fatal exception is triggered
97 and Windows pops up the "application needs to be closed" dialog.
98 At that point, _gnu_exception_handler, the top-level exception
99 handler installed by the MinGW startup code, is somewhere on the
100 call-stack of the main thread, so going to that call frame and
101 looking at the argument to _gnu_exception_handler, which is a
102 PEXCEPTION_POINTERS pointer, can reveal the exception code
103 (excptr->ExceptionRecord->ExceptionCode) and the address where the
104 exception happened (excptr->ExceptionRecord->ExceptionAddress), as
105 well as some additional information specific to the exception. */
106 PEXCEPTION_POINTERS excptr
;
107 PEXCEPTION_RECORD excprec
;
113 #include <tlhelp32.h>
118 #if _WIN32_WINNT < 0x0500
119 #if !defined (__MINGW32__) || __W32API_MAJOR_VERSION < 3 || (__W32API_MAJOR_VERSION == 3 && __W32API_MINOR_VERSION < 15)
120 /* This either is not in psapi.h or guarded by higher value of
121 _WIN32_WINNT than what we use. w32api supplied with MinGW 3.15
122 defines it in psapi.h */
123 typedef struct _PROCESS_MEMORY_COUNTERS_EX
{
125 DWORD PageFaultCount
;
126 SIZE_T PeakWorkingSetSize
;
127 SIZE_T WorkingSetSize
;
128 SIZE_T QuotaPeakPagedPoolUsage
;
129 SIZE_T QuotaPagedPoolUsage
;
130 SIZE_T QuotaPeakNonPagedPoolUsage
;
131 SIZE_T QuotaNonPagedPoolUsage
;
132 SIZE_T PagefileUsage
;
133 SIZE_T PeakPagefileUsage
;
135 } PROCESS_MEMORY_COUNTERS_EX
,*PPROCESS_MEMORY_COUNTERS_EX
;
139 #include <winioctl.h>
146 /* This is not in MinGW's sddl.h (but they are in MSVC headers), so we
147 define them by hand if not already defined. */
148 #ifndef SDDL_REVISION_1
149 #define SDDL_REVISION_1 1
150 #endif /* SDDL_REVISION_1 */
152 #if defined(_MSC_VER) || defined(_W64)
153 /* MSVC and MinGW64 don't provide the definition of
154 REPARSE_DATA_BUFFER and the associated macros, except on ntifs.h,
155 which cannot be included because it triggers conflicts with other
156 Windows API headers. So we define it here by hand. */
158 typedef struct _REPARSE_DATA_BUFFER
{
160 USHORT ReparseDataLength
;
164 USHORT SubstituteNameOffset
;
165 USHORT SubstituteNameLength
;
166 USHORT PrintNameOffset
;
167 USHORT PrintNameLength
;
170 } SymbolicLinkReparseBuffer
;
172 USHORT SubstituteNameOffset
;
173 USHORT SubstituteNameLength
;
174 USHORT PrintNameOffset
;
175 USHORT PrintNameLength
;
177 } MountPointReparseBuffer
;
180 } GenericReparseBuffer
;
182 } REPARSE_DATA_BUFFER
, *PREPARSE_DATA_BUFFER
;
184 #ifndef FILE_DEVICE_FILE_SYSTEM
185 #define FILE_DEVICE_FILE_SYSTEM 9
187 #ifndef METHOD_BUFFERED
188 #define METHOD_BUFFERED 0
190 #ifndef FILE_ANY_ACCESS
191 #define FILE_ANY_ACCESS 0x00000000
194 #define CTL_CODE(t,f,m,a) (((t)<<16)|((a)<<14)|((f)<<2)|(m))
196 /* MinGW64 defines FSCTL_GET_REPARSE_POINT on winioctl.h. */
197 #ifndef FSCTL_GET_REPARSE_POINT
198 #define FSCTL_GET_REPARSE_POINT \
199 CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 42, METHOD_BUFFERED, FILE_ANY_ACCESS)
203 /* TCP connection support. */
204 #include <sys/socket.h>
223 #include <iphlpapi.h> /* should be after winsock2.h */
227 #include "w32common.h"
229 #include "w32select.h"
231 #include "dispextern.h" /* for xstrcasecmp */
232 #include "coding.h" /* for Vlocale_coding_system */
234 #include "careadlinkat.h"
235 #include "allocator.h"
237 /* For serial_configure and serial_open. */
240 typedef HRESULT (WINAPI
* ShGetFolderPath_fn
)
241 (IN HWND
, IN
int, IN HANDLE
, IN DWORD
, OUT
char *);
243 Lisp_Object QCloaded_from
;
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
;
311 BEGIN: Wrapper functions around OpenProcessToken
312 and other functions in advapi32.dll that are only
313 supported in Windows NT / 2k / XP
315 /* ** Function pointer typedefs ** */
316 typedef BOOL (WINAPI
* OpenProcessToken_Proc
) (
317 HANDLE ProcessHandle
,
319 PHANDLE TokenHandle
);
320 typedef BOOL (WINAPI
* GetTokenInformation_Proc
) (
322 TOKEN_INFORMATION_CLASS TokenInformationClass
,
323 LPVOID TokenInformation
,
324 DWORD TokenInformationLength
,
325 PDWORD ReturnLength
);
326 typedef BOOL (WINAPI
* GetProcessTimes_Proc
) (
327 HANDLE process_handle
,
328 LPFILETIME creation_time
,
329 LPFILETIME exit_time
,
330 LPFILETIME kernel_time
,
331 LPFILETIME user_time
);
333 GetProcessTimes_Proc get_process_times_fn
= NULL
;
336 const char * const LookupAccountSid_Name
= "LookupAccountSidW";
338 const char * const LookupAccountSid_Name
= "LookupAccountSidA";
340 typedef BOOL (WINAPI
* LookupAccountSid_Proc
) (
341 LPCTSTR lpSystemName
,
346 LPDWORD cbDomainName
,
347 PSID_NAME_USE peUse
);
348 typedef PDWORD (WINAPI
* GetSidSubAuthority_Proc
) (
351 typedef PUCHAR (WINAPI
* GetSidSubAuthorityCount_Proc
) (
353 typedef DWORD (WINAPI
* GetSecurityInfo_Proc
) (
355 SE_OBJECT_TYPE ObjectType
,
356 SECURITY_INFORMATION SecurityInfo
,
361 PSECURITY_DESCRIPTOR
*ppSecurityDescriptor
);
362 typedef BOOL (WINAPI
* GetFileSecurityW_Proc
) (
364 SECURITY_INFORMATION RequestedInformation
,
365 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
367 LPDWORD lpnLengthNeeded
);
368 typedef BOOL (WINAPI
* GetFileSecurityA_Proc
) (
370 SECURITY_INFORMATION RequestedInformation
,
371 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
373 LPDWORD lpnLengthNeeded
);
374 typedef BOOL (WINAPI
*SetFileSecurityW_Proc
) (
376 SECURITY_INFORMATION SecurityInformation
,
377 PSECURITY_DESCRIPTOR pSecurityDescriptor
);
378 typedef BOOL (WINAPI
*SetFileSecurityA_Proc
) (
380 SECURITY_INFORMATION SecurityInformation
,
381 PSECURITY_DESCRIPTOR pSecurityDescriptor
);
382 typedef DWORD (WINAPI
*SetNamedSecurityInfoW_Proc
) (
383 LPCWSTR lpObjectName
,
384 SE_OBJECT_TYPE ObjectType
,
385 SECURITY_INFORMATION SecurityInformation
,
390 typedef DWORD (WINAPI
*SetNamedSecurityInfoA_Proc
) (
392 SE_OBJECT_TYPE ObjectType
,
393 SECURITY_INFORMATION SecurityInformation
,
398 typedef BOOL (WINAPI
* GetSecurityDescriptorOwner_Proc
) (
399 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
401 LPBOOL lpbOwnerDefaulted
);
402 typedef BOOL (WINAPI
* GetSecurityDescriptorGroup_Proc
) (
403 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
405 LPBOOL lpbGroupDefaulted
);
406 typedef BOOL (WINAPI
*GetSecurityDescriptorDacl_Proc
) (
407 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
408 LPBOOL lpbDaclPresent
,
410 LPBOOL lpbDaclDefaulted
);
411 typedef BOOL (WINAPI
* IsValidSid_Proc
) (
413 typedef HANDLE (WINAPI
* CreateToolhelp32Snapshot_Proc
) (
415 DWORD th32ProcessID
);
416 typedef BOOL (WINAPI
* Process32First_Proc
) (
418 LPPROCESSENTRY32 lppe
);
419 typedef BOOL (WINAPI
* Process32Next_Proc
) (
421 LPPROCESSENTRY32 lppe
);
422 typedef BOOL (WINAPI
* OpenThreadToken_Proc
) (
426 PHANDLE TokenHandle
);
427 typedef BOOL (WINAPI
* ImpersonateSelf_Proc
) (
428 SECURITY_IMPERSONATION_LEVEL ImpersonationLevel
);
429 typedef BOOL (WINAPI
* RevertToSelf_Proc
) (void);
430 typedef BOOL (WINAPI
* GetProcessMemoryInfo_Proc
) (
432 PPROCESS_MEMORY_COUNTERS ppsmemCounters
,
434 typedef BOOL (WINAPI
* GetProcessWorkingSetSize_Proc
) (
436 PSIZE_T lpMinimumWorkingSetSize
,
437 PSIZE_T lpMaximumWorkingSetSize
);
438 typedef BOOL (WINAPI
* GlobalMemoryStatus_Proc
) (
439 LPMEMORYSTATUS lpBuffer
);
440 typedef BOOL (WINAPI
* GlobalMemoryStatusEx_Proc
) (
441 LPMEMORY_STATUS_EX lpBuffer
);
442 typedef BOOL (WINAPI
* CopySid_Proc
) (
443 DWORD nDestinationSidLength
,
444 PSID pDestinationSid
,
446 typedef BOOL (WINAPI
* EqualSid_Proc
) (
449 typedef DWORD (WINAPI
* GetLengthSid_Proc
) (
451 typedef void (WINAPI
* GetNativeSystemInfo_Proc
) (
452 LPSYSTEM_INFO lpSystemInfo
);
453 typedef BOOL (WINAPI
* GetSystemTimes_Proc
) (
454 LPFILETIME lpIdleTime
,
455 LPFILETIME lpKernelTime
,
456 LPFILETIME lpUserTime
);
457 typedef BOOLEAN (WINAPI
*CreateSymbolicLinkW_Proc
) (
458 LPCWSTR lpSymlinkFileName
,
459 LPCWSTR lpTargetFileName
,
461 typedef BOOLEAN (WINAPI
*CreateSymbolicLinkA_Proc
) (
462 LPCSTR lpSymlinkFileName
,
463 LPCSTR lpTargetFileName
,
465 typedef BOOL (WINAPI
*ConvertStringSecurityDescriptorToSecurityDescriptor_Proc
) (
466 LPCTSTR StringSecurityDescriptor
,
467 DWORD StringSDRevision
,
468 PSECURITY_DESCRIPTOR
*SecurityDescriptor
,
469 PULONG SecurityDescriptorSize
);
470 typedef BOOL (WINAPI
*ConvertSecurityDescriptorToStringSecurityDescriptor_Proc
) (
471 PSECURITY_DESCRIPTOR SecurityDescriptor
,
472 DWORD RequestedStringSDRevision
,
473 SECURITY_INFORMATION SecurityInformation
,
474 LPTSTR
*StringSecurityDescriptor
,
475 PULONG StringSecurityDescriptorLen
);
476 typedef BOOL (WINAPI
*IsValidSecurityDescriptor_Proc
) (PSECURITY_DESCRIPTOR
);
477 typedef DWORD (WINAPI
*GetAdaptersInfo_Proc
) (
478 PIP_ADAPTER_INFO pAdapterInfo
,
481 int (WINAPI
*pMultiByteToWideChar
)(UINT
,DWORD
,LPCSTR
,int,LPWSTR
,int);
482 int (WINAPI
*pWideCharToMultiByte
)(UINT
,DWORD
,LPCWSTR
,int,LPSTR
,int,LPCSTR
,LPBOOL
);
484 /* ** A utility function ** */
488 static BOOL s_b_ret
= 0;
489 OSVERSIONINFO os_ver
;
490 if (g_b_init_is_windows_9x
== 0)
492 g_b_init_is_windows_9x
= 1;
493 ZeroMemory (&os_ver
, sizeof (OSVERSIONINFO
));
494 os_ver
.dwOSVersionInfoSize
= sizeof (OSVERSIONINFO
);
495 if (GetVersionEx (&os_ver
))
497 s_b_ret
= (os_ver
.dwPlatformId
== VER_PLATFORM_WIN32_WINDOWS
);
503 static Lisp_Object
ltime (ULONGLONG
);
505 /* Get total user and system times for get-internal-run-time.
506 Returns a list of integers if the times are provided by the OS
507 (NT derivatives), otherwise it returns the result of current-time. */
509 w32_get_internal_run_time (void)
511 if (get_process_times_fn
)
513 FILETIME create
, exit
, kernel
, user
;
514 HANDLE proc
= GetCurrentProcess ();
515 if ((*get_process_times_fn
) (proc
, &create
, &exit
, &kernel
, &user
))
517 LARGE_INTEGER user_int
, kernel_int
, total
;
518 user_int
.LowPart
= user
.dwLowDateTime
;
519 user_int
.HighPart
= user
.dwHighDateTime
;
520 kernel_int
.LowPart
= kernel
.dwLowDateTime
;
521 kernel_int
.HighPart
= kernel
.dwHighDateTime
;
522 total
.QuadPart
= user_int
.QuadPart
+ kernel_int
.QuadPart
;
523 return ltime (total
.QuadPart
);
527 return Fcurrent_time ();
530 /* ** The wrapper functions ** */
533 open_process_token (HANDLE ProcessHandle
,
537 static OpenProcessToken_Proc s_pfn_Open_Process_Token
= NULL
;
538 HMODULE hm_advapi32
= NULL
;
539 if (is_windows_9x () == TRUE
)
543 if (g_b_init_open_process_token
== 0)
545 g_b_init_open_process_token
= 1;
546 hm_advapi32
= LoadLibrary ("Advapi32.dll");
547 s_pfn_Open_Process_Token
=
548 (OpenProcessToken_Proc
) GetProcAddress (hm_advapi32
, "OpenProcessToken");
550 if (s_pfn_Open_Process_Token
== NULL
)
555 s_pfn_Open_Process_Token (
563 get_token_information (HANDLE TokenHandle
,
564 TOKEN_INFORMATION_CLASS TokenInformationClass
,
565 LPVOID TokenInformation
,
566 DWORD TokenInformationLength
,
569 static GetTokenInformation_Proc s_pfn_Get_Token_Information
= NULL
;
570 HMODULE hm_advapi32
= NULL
;
571 if (is_windows_9x () == TRUE
)
575 if (g_b_init_get_token_information
== 0)
577 g_b_init_get_token_information
= 1;
578 hm_advapi32
= LoadLibrary ("Advapi32.dll");
579 s_pfn_Get_Token_Information
=
580 (GetTokenInformation_Proc
) GetProcAddress (hm_advapi32
, "GetTokenInformation");
582 if (s_pfn_Get_Token_Information
== NULL
)
587 s_pfn_Get_Token_Information (
589 TokenInformationClass
,
591 TokenInformationLength
,
597 lookup_account_sid (LPCTSTR lpSystemName
,
602 LPDWORD cbDomainName
,
605 static LookupAccountSid_Proc s_pfn_Lookup_Account_Sid
= NULL
;
606 HMODULE hm_advapi32
= NULL
;
607 if (is_windows_9x () == TRUE
)
611 if (g_b_init_lookup_account_sid
== 0)
613 g_b_init_lookup_account_sid
= 1;
614 hm_advapi32
= LoadLibrary ("Advapi32.dll");
615 s_pfn_Lookup_Account_Sid
=
616 (LookupAccountSid_Proc
) GetProcAddress (hm_advapi32
, LookupAccountSid_Name
);
618 if (s_pfn_Lookup_Account_Sid
== NULL
)
623 s_pfn_Lookup_Account_Sid (
635 get_sid_sub_authority (PSID pSid
, DWORD n
)
637 static GetSidSubAuthority_Proc s_pfn_Get_Sid_Sub_Authority
= NULL
;
638 static DWORD zero
= 0U;
639 HMODULE hm_advapi32
= NULL
;
640 if (is_windows_9x () == TRUE
)
644 if (g_b_init_get_sid_sub_authority
== 0)
646 g_b_init_get_sid_sub_authority
= 1;
647 hm_advapi32
= LoadLibrary ("Advapi32.dll");
648 s_pfn_Get_Sid_Sub_Authority
=
649 (GetSidSubAuthority_Proc
) GetProcAddress (
650 hm_advapi32
, "GetSidSubAuthority");
652 if (s_pfn_Get_Sid_Sub_Authority
== NULL
)
656 return (s_pfn_Get_Sid_Sub_Authority (pSid
, n
));
660 get_sid_sub_authority_count (PSID pSid
)
662 static GetSidSubAuthorityCount_Proc s_pfn_Get_Sid_Sub_Authority_Count
= NULL
;
663 static UCHAR zero
= 0U;
664 HMODULE hm_advapi32
= NULL
;
665 if (is_windows_9x () == TRUE
)
669 if (g_b_init_get_sid_sub_authority_count
== 0)
671 g_b_init_get_sid_sub_authority_count
= 1;
672 hm_advapi32
= LoadLibrary ("Advapi32.dll");
673 s_pfn_Get_Sid_Sub_Authority_Count
=
674 (GetSidSubAuthorityCount_Proc
) GetProcAddress (
675 hm_advapi32
, "GetSidSubAuthorityCount");
677 if (s_pfn_Get_Sid_Sub_Authority_Count
== NULL
)
681 return (s_pfn_Get_Sid_Sub_Authority_Count (pSid
));
685 get_security_info (HANDLE handle
,
686 SE_OBJECT_TYPE ObjectType
,
687 SECURITY_INFORMATION SecurityInfo
,
692 PSECURITY_DESCRIPTOR
*ppSecurityDescriptor
)
694 static GetSecurityInfo_Proc s_pfn_Get_Security_Info
= NULL
;
695 HMODULE hm_advapi32
= NULL
;
696 if (is_windows_9x () == TRUE
)
700 if (g_b_init_get_security_info
== 0)
702 g_b_init_get_security_info
= 1;
703 hm_advapi32
= LoadLibrary ("Advapi32.dll");
704 s_pfn_Get_Security_Info
=
705 (GetSecurityInfo_Proc
) GetProcAddress (
706 hm_advapi32
, "GetSecurityInfo");
708 if (s_pfn_Get_Security_Info
== NULL
)
712 return (s_pfn_Get_Security_Info (handle
, ObjectType
, SecurityInfo
,
713 ppsidOwner
, ppsidGroup
, ppDacl
, ppSacl
,
714 ppSecurityDescriptor
));
718 get_file_security (const char *lpFileName
,
719 SECURITY_INFORMATION RequestedInformation
,
720 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
722 LPDWORD lpnLengthNeeded
)
724 static GetFileSecurityA_Proc s_pfn_Get_File_SecurityA
= NULL
;
725 static GetFileSecurityW_Proc s_pfn_Get_File_SecurityW
= NULL
;
726 HMODULE hm_advapi32
= NULL
;
727 if (is_windows_9x () == TRUE
)
732 if (w32_unicode_filenames
)
734 wchar_t filename_w
[MAX_PATH
];
736 if (g_b_init_get_file_security_w
== 0)
738 g_b_init_get_file_security_w
= 1;
739 hm_advapi32
= LoadLibrary ("Advapi32.dll");
740 s_pfn_Get_File_SecurityW
=
741 (GetFileSecurityW_Proc
) GetProcAddress (hm_advapi32
,
744 if (s_pfn_Get_File_SecurityW
== NULL
)
749 filename_to_utf16 (lpFileName
, filename_w
);
750 return (s_pfn_Get_File_SecurityW (filename_w
, RequestedInformation
,
751 pSecurityDescriptor
, nLength
,
756 char filename_a
[MAX_PATH
];
758 if (g_b_init_get_file_security_a
== 0)
760 g_b_init_get_file_security_a
= 1;
761 hm_advapi32
= LoadLibrary ("Advapi32.dll");
762 s_pfn_Get_File_SecurityA
=
763 (GetFileSecurityA_Proc
) GetProcAddress (hm_advapi32
,
766 if (s_pfn_Get_File_SecurityA
== NULL
)
771 filename_to_ansi (lpFileName
, filename_a
);
772 return (s_pfn_Get_File_SecurityA (filename_a
, RequestedInformation
,
773 pSecurityDescriptor
, nLength
,
779 set_file_security (const char *lpFileName
,
780 SECURITY_INFORMATION SecurityInformation
,
781 PSECURITY_DESCRIPTOR pSecurityDescriptor
)
783 static SetFileSecurityW_Proc s_pfn_Set_File_SecurityW
= NULL
;
784 static SetFileSecurityA_Proc s_pfn_Set_File_SecurityA
= NULL
;
785 HMODULE hm_advapi32
= NULL
;
786 if (is_windows_9x () == TRUE
)
791 if (w32_unicode_filenames
)
793 wchar_t filename_w
[MAX_PATH
];
795 if (g_b_init_set_file_security_w
== 0)
797 g_b_init_set_file_security_w
= 1;
798 hm_advapi32
= LoadLibrary ("Advapi32.dll");
799 s_pfn_Set_File_SecurityW
=
800 (SetFileSecurityW_Proc
) GetProcAddress (hm_advapi32
,
803 if (s_pfn_Set_File_SecurityW
== NULL
)
808 filename_to_utf16 (lpFileName
, filename_w
);
809 return (s_pfn_Set_File_SecurityW (filename_w
, SecurityInformation
,
810 pSecurityDescriptor
));
814 char filename_a
[MAX_PATH
];
816 if (g_b_init_set_file_security_a
== 0)
818 g_b_init_set_file_security_a
= 1;
819 hm_advapi32
= LoadLibrary ("Advapi32.dll");
820 s_pfn_Set_File_SecurityA
=
821 (SetFileSecurityA_Proc
) GetProcAddress (hm_advapi32
,
824 if (s_pfn_Set_File_SecurityA
== NULL
)
829 filename_to_ansi (lpFileName
, filename_a
);
830 return (s_pfn_Set_File_SecurityA (filename_a
, SecurityInformation
,
831 pSecurityDescriptor
));
836 set_named_security_info (LPCTSTR lpObjectName
,
837 SE_OBJECT_TYPE ObjectType
,
838 SECURITY_INFORMATION SecurityInformation
,
844 static SetNamedSecurityInfoW_Proc s_pfn_Set_Named_Security_InfoW
= NULL
;
845 static SetNamedSecurityInfoA_Proc s_pfn_Set_Named_Security_InfoA
= NULL
;
846 HMODULE hm_advapi32
= NULL
;
847 if (is_windows_9x () == TRUE
)
852 if (w32_unicode_filenames
)
854 wchar_t filename_w
[MAX_PATH
];
856 if (g_b_init_set_named_security_info_w
== 0)
858 g_b_init_set_named_security_info_w
= 1;
859 hm_advapi32
= LoadLibrary ("Advapi32.dll");
860 s_pfn_Set_Named_Security_InfoW
=
861 (SetNamedSecurityInfoW_Proc
) GetProcAddress (hm_advapi32
,
862 "SetNamedSecurityInfoW");
864 if (s_pfn_Set_Named_Security_InfoW
== NULL
)
869 filename_to_utf16 (lpObjectName
, filename_w
);
870 return (s_pfn_Set_Named_Security_InfoW (filename_w
, ObjectType
,
871 SecurityInformation
, psidOwner
,
872 psidGroup
, pDacl
, pSacl
));
876 char filename_a
[MAX_PATH
];
878 if (g_b_init_set_named_security_info_a
== 0)
880 g_b_init_set_named_security_info_a
= 1;
881 hm_advapi32
= LoadLibrary ("Advapi32.dll");
882 s_pfn_Set_Named_Security_InfoA
=
883 (SetNamedSecurityInfoA_Proc
) GetProcAddress (hm_advapi32
,
884 "SetNamedSecurityInfoA");
886 if (s_pfn_Set_Named_Security_InfoA
== NULL
)
891 filename_to_ansi (lpObjectName
, filename_a
);
892 return (s_pfn_Set_Named_Security_InfoA (filename_a
, ObjectType
,
893 SecurityInformation
, psidOwner
,
894 psidGroup
, pDacl
, pSacl
));
899 get_security_descriptor_owner (PSECURITY_DESCRIPTOR pSecurityDescriptor
,
901 LPBOOL lpbOwnerDefaulted
)
903 static GetSecurityDescriptorOwner_Proc s_pfn_Get_Security_Descriptor_Owner
= NULL
;
904 HMODULE hm_advapi32
= NULL
;
905 if (is_windows_9x () == TRUE
)
910 if (g_b_init_get_security_descriptor_owner
== 0)
912 g_b_init_get_security_descriptor_owner
= 1;
913 hm_advapi32
= LoadLibrary ("Advapi32.dll");
914 s_pfn_Get_Security_Descriptor_Owner
=
915 (GetSecurityDescriptorOwner_Proc
) GetProcAddress (
916 hm_advapi32
, "GetSecurityDescriptorOwner");
918 if (s_pfn_Get_Security_Descriptor_Owner
== NULL
)
923 return (s_pfn_Get_Security_Descriptor_Owner (pSecurityDescriptor
, pOwner
,
928 get_security_descriptor_group (PSECURITY_DESCRIPTOR pSecurityDescriptor
,
930 LPBOOL lpbGroupDefaulted
)
932 static GetSecurityDescriptorGroup_Proc s_pfn_Get_Security_Descriptor_Group
= NULL
;
933 HMODULE hm_advapi32
= NULL
;
934 if (is_windows_9x () == TRUE
)
939 if (g_b_init_get_security_descriptor_group
== 0)
941 g_b_init_get_security_descriptor_group
= 1;
942 hm_advapi32
= LoadLibrary ("Advapi32.dll");
943 s_pfn_Get_Security_Descriptor_Group
=
944 (GetSecurityDescriptorGroup_Proc
) GetProcAddress (
945 hm_advapi32
, "GetSecurityDescriptorGroup");
947 if (s_pfn_Get_Security_Descriptor_Group
== NULL
)
952 return (s_pfn_Get_Security_Descriptor_Group (pSecurityDescriptor
, pGroup
,
957 get_security_descriptor_dacl (PSECURITY_DESCRIPTOR pSecurityDescriptor
,
958 LPBOOL lpbDaclPresent
,
960 LPBOOL lpbDaclDefaulted
)
962 static GetSecurityDescriptorDacl_Proc s_pfn_Get_Security_Descriptor_Dacl
= NULL
;
963 HMODULE hm_advapi32
= NULL
;
964 if (is_windows_9x () == TRUE
)
969 if (g_b_init_get_security_descriptor_dacl
== 0)
971 g_b_init_get_security_descriptor_dacl
= 1;
972 hm_advapi32
= LoadLibrary ("Advapi32.dll");
973 s_pfn_Get_Security_Descriptor_Dacl
=
974 (GetSecurityDescriptorDacl_Proc
) GetProcAddress (
975 hm_advapi32
, "GetSecurityDescriptorDacl");
977 if (s_pfn_Get_Security_Descriptor_Dacl
== NULL
)
982 return (s_pfn_Get_Security_Descriptor_Dacl (pSecurityDescriptor
,
983 lpbDaclPresent
, pDacl
,
988 is_valid_sid (PSID sid
)
990 static IsValidSid_Proc s_pfn_Is_Valid_Sid
= NULL
;
991 HMODULE hm_advapi32
= NULL
;
992 if (is_windows_9x () == TRUE
)
996 if (g_b_init_is_valid_sid
== 0)
998 g_b_init_is_valid_sid
= 1;
999 hm_advapi32
= LoadLibrary ("Advapi32.dll");
1000 s_pfn_Is_Valid_Sid
=
1001 (IsValidSid_Proc
) GetProcAddress (
1002 hm_advapi32
, "IsValidSid");
1004 if (s_pfn_Is_Valid_Sid
== NULL
)
1008 return (s_pfn_Is_Valid_Sid (sid
));
1012 equal_sid (PSID sid1
, PSID sid2
)
1014 static EqualSid_Proc s_pfn_Equal_Sid
= NULL
;
1015 HMODULE hm_advapi32
= NULL
;
1016 if (is_windows_9x () == TRUE
)
1020 if (g_b_init_equal_sid
== 0)
1022 g_b_init_equal_sid
= 1;
1023 hm_advapi32
= LoadLibrary ("Advapi32.dll");
1025 (EqualSid_Proc
) GetProcAddress (
1026 hm_advapi32
, "EqualSid");
1028 if (s_pfn_Equal_Sid
== NULL
)
1032 return (s_pfn_Equal_Sid (sid1
, sid2
));
1036 get_length_sid (PSID sid
)
1038 static GetLengthSid_Proc s_pfn_Get_Length_Sid
= NULL
;
1039 HMODULE hm_advapi32
= NULL
;
1040 if (is_windows_9x () == TRUE
)
1044 if (g_b_init_get_length_sid
== 0)
1046 g_b_init_get_length_sid
= 1;
1047 hm_advapi32
= LoadLibrary ("Advapi32.dll");
1048 s_pfn_Get_Length_Sid
=
1049 (GetLengthSid_Proc
) GetProcAddress (
1050 hm_advapi32
, "GetLengthSid");
1052 if (s_pfn_Get_Length_Sid
== NULL
)
1056 return (s_pfn_Get_Length_Sid (sid
));
1060 copy_sid (DWORD destlen
, PSID dest
, PSID src
)
1062 static CopySid_Proc s_pfn_Copy_Sid
= NULL
;
1063 HMODULE hm_advapi32
= NULL
;
1064 if (is_windows_9x () == TRUE
)
1068 if (g_b_init_copy_sid
== 0)
1070 g_b_init_copy_sid
= 1;
1071 hm_advapi32
= LoadLibrary ("Advapi32.dll");
1073 (CopySid_Proc
) GetProcAddress (
1074 hm_advapi32
, "CopySid");
1076 if (s_pfn_Copy_Sid
== NULL
)
1080 return (s_pfn_Copy_Sid (destlen
, dest
, src
));
1084 END: Wrapper functions around OpenProcessToken
1085 and other functions in advapi32.dll that are only
1086 supported in Windows NT / 2k / XP
1090 get_native_system_info (LPSYSTEM_INFO lpSystemInfo
)
1092 static GetNativeSystemInfo_Proc s_pfn_Get_Native_System_Info
= NULL
;
1093 if (is_windows_9x () != TRUE
)
1095 if (g_b_init_get_native_system_info
== 0)
1097 g_b_init_get_native_system_info
= 1;
1098 s_pfn_Get_Native_System_Info
=
1099 (GetNativeSystemInfo_Proc
)GetProcAddress (GetModuleHandle ("kernel32.dll"),
1100 "GetNativeSystemInfo");
1102 if (s_pfn_Get_Native_System_Info
!= NULL
)
1103 s_pfn_Get_Native_System_Info (lpSystemInfo
);
1106 lpSystemInfo
->dwNumberOfProcessors
= -1;
1110 get_system_times (LPFILETIME lpIdleTime
,
1111 LPFILETIME lpKernelTime
,
1112 LPFILETIME lpUserTime
)
1114 static GetSystemTimes_Proc s_pfn_Get_System_times
= NULL
;
1115 if (is_windows_9x () == TRUE
)
1119 if (g_b_init_get_system_times
== 0)
1121 g_b_init_get_system_times
= 1;
1122 s_pfn_Get_System_times
=
1123 (GetSystemTimes_Proc
)GetProcAddress (GetModuleHandle ("kernel32.dll"),
1126 if (s_pfn_Get_System_times
== NULL
)
1128 return (s_pfn_Get_System_times (lpIdleTime
, lpKernelTime
, lpUserTime
));
1131 static BOOLEAN WINAPI
1132 create_symbolic_link (LPCSTR lpSymlinkFilename
,
1133 LPCSTR lpTargetFileName
,
1136 static CreateSymbolicLinkW_Proc s_pfn_Create_Symbolic_LinkW
= NULL
;
1137 static CreateSymbolicLinkA_Proc s_pfn_Create_Symbolic_LinkA
= NULL
;
1140 if (is_windows_9x () == TRUE
)
1145 if (w32_unicode_filenames
)
1147 wchar_t symfn_w
[MAX_PATH
], tgtfn_w
[MAX_PATH
];
1149 if (g_b_init_create_symbolic_link_w
== 0)
1151 g_b_init_create_symbolic_link_w
= 1;
1152 s_pfn_Create_Symbolic_LinkW
=
1153 (CreateSymbolicLinkW_Proc
)GetProcAddress (GetModuleHandle ("kernel32.dll"),
1154 "CreateSymbolicLinkW");
1156 if (s_pfn_Create_Symbolic_LinkW
== NULL
)
1162 filename_to_utf16 (lpSymlinkFilename
, symfn_w
);
1163 filename_to_utf16 (lpTargetFileName
, tgtfn_w
);
1164 retval
= s_pfn_Create_Symbolic_LinkW (symfn_w
, tgtfn_w
, dwFlags
);
1165 /* If we were denied creation of the symlink, try again after
1166 enabling the SeCreateSymbolicLinkPrivilege for our process. */
1169 TOKEN_PRIVILEGES priv_current
;
1171 if (enable_privilege (SE_CREATE_SYMBOLIC_LINK_NAME
, TRUE
,
1174 retval
= s_pfn_Create_Symbolic_LinkW (symfn_w
, tgtfn_w
, dwFlags
);
1175 restore_privilege (&priv_current
);
1182 char symfn_a
[MAX_PATH
], tgtfn_a
[MAX_PATH
];
1184 if (g_b_init_create_symbolic_link_a
== 0)
1186 g_b_init_create_symbolic_link_a
= 1;
1187 s_pfn_Create_Symbolic_LinkA
=
1188 (CreateSymbolicLinkA_Proc
)GetProcAddress (GetModuleHandle ("kernel32.dll"),
1189 "CreateSymbolicLinkA");
1191 if (s_pfn_Create_Symbolic_LinkA
== NULL
)
1197 filename_to_ansi (lpSymlinkFilename
, symfn_a
);
1198 filename_to_ansi (lpTargetFileName
, tgtfn_a
);
1199 retval
= s_pfn_Create_Symbolic_LinkA (symfn_a
, tgtfn_a
, dwFlags
);
1200 /* If we were denied creation of the symlink, try again after
1201 enabling the SeCreateSymbolicLinkPrivilege for our process. */
1204 TOKEN_PRIVILEGES priv_current
;
1206 if (enable_privilege (SE_CREATE_SYMBOLIC_LINK_NAME
, TRUE
,
1209 retval
= s_pfn_Create_Symbolic_LinkA (symfn_a
, tgtfn_a
, dwFlags
);
1210 restore_privilege (&priv_current
);
1219 is_valid_security_descriptor (PSECURITY_DESCRIPTOR pSecurityDescriptor
)
1221 static IsValidSecurityDescriptor_Proc s_pfn_Is_Valid_Security_Descriptor_Proc
= NULL
;
1223 if (is_windows_9x () == TRUE
)
1229 if (g_b_init_is_valid_security_descriptor
== 0)
1231 g_b_init_is_valid_security_descriptor
= 1;
1232 s_pfn_Is_Valid_Security_Descriptor_Proc
=
1233 (IsValidSecurityDescriptor_Proc
)GetProcAddress (GetModuleHandle ("Advapi32.dll"),
1234 "IsValidSecurityDescriptor");
1236 if (s_pfn_Is_Valid_Security_Descriptor_Proc
== NULL
)
1242 return s_pfn_Is_Valid_Security_Descriptor_Proc (pSecurityDescriptor
);
1246 convert_sd_to_sddl (PSECURITY_DESCRIPTOR SecurityDescriptor
,
1247 DWORD RequestedStringSDRevision
,
1248 SECURITY_INFORMATION SecurityInformation
,
1249 LPTSTR
*StringSecurityDescriptor
,
1250 PULONG StringSecurityDescriptorLen
)
1252 static ConvertSecurityDescriptorToStringSecurityDescriptor_Proc s_pfn_Convert_SD_To_SDDL
= NULL
;
1255 if (is_windows_9x () == TRUE
)
1261 if (g_b_init_convert_sd_to_sddl
== 0)
1263 g_b_init_convert_sd_to_sddl
= 1;
1265 s_pfn_Convert_SD_To_SDDL
=
1266 (ConvertSecurityDescriptorToStringSecurityDescriptor_Proc
)GetProcAddress (GetModuleHandle ("Advapi32.dll"),
1267 "ConvertSecurityDescriptorToStringSecurityDescriptorW");
1269 s_pfn_Convert_SD_To_SDDL
=
1270 (ConvertSecurityDescriptorToStringSecurityDescriptor_Proc
)GetProcAddress (GetModuleHandle ("Advapi32.dll"),
1271 "ConvertSecurityDescriptorToStringSecurityDescriptorA");
1274 if (s_pfn_Convert_SD_To_SDDL
== NULL
)
1280 retval
= s_pfn_Convert_SD_To_SDDL (SecurityDescriptor
,
1281 RequestedStringSDRevision
,
1282 SecurityInformation
,
1283 StringSecurityDescriptor
,
1284 StringSecurityDescriptorLen
);
1290 convert_sddl_to_sd (LPCTSTR StringSecurityDescriptor
,
1291 DWORD StringSDRevision
,
1292 PSECURITY_DESCRIPTOR
*SecurityDescriptor
,
1293 PULONG SecurityDescriptorSize
)
1295 static ConvertStringSecurityDescriptorToSecurityDescriptor_Proc s_pfn_Convert_SDDL_To_SD
= NULL
;
1298 if (is_windows_9x () == TRUE
)
1304 if (g_b_init_convert_sddl_to_sd
== 0)
1306 g_b_init_convert_sddl_to_sd
= 1;
1308 s_pfn_Convert_SDDL_To_SD
=
1309 (ConvertStringSecurityDescriptorToSecurityDescriptor_Proc
)GetProcAddress (GetModuleHandle ("Advapi32.dll"),
1310 "ConvertStringSecurityDescriptorToSecurityDescriptorW");
1312 s_pfn_Convert_SDDL_To_SD
=
1313 (ConvertStringSecurityDescriptorToSecurityDescriptor_Proc
)GetProcAddress (GetModuleHandle ("Advapi32.dll"),
1314 "ConvertStringSecurityDescriptorToSecurityDescriptorA");
1317 if (s_pfn_Convert_SDDL_To_SD
== NULL
)
1323 retval
= s_pfn_Convert_SDDL_To_SD (StringSecurityDescriptor
,
1326 SecurityDescriptorSize
);
1332 get_adapters_info (PIP_ADAPTER_INFO pAdapterInfo
, PULONG pOutBufLen
)
1334 static GetAdaptersInfo_Proc s_pfn_Get_Adapters_Info
= NULL
;
1335 HMODULE hm_iphlpapi
= NULL
;
1337 if (is_windows_9x () == TRUE
)
1338 return ERROR_NOT_SUPPORTED
;
1340 if (g_b_init_get_adapters_info
== 0)
1342 g_b_init_get_adapters_info
= 1;
1343 hm_iphlpapi
= LoadLibrary ("Iphlpapi.dll");
1345 s_pfn_Get_Adapters_Info
= (GetAdaptersInfo_Proc
)
1346 GetProcAddress (hm_iphlpapi
, "GetAdaptersInfo");
1348 if (s_pfn_Get_Adapters_Info
== NULL
)
1349 return ERROR_NOT_SUPPORTED
;
1350 return s_pfn_Get_Adapters_Info (pAdapterInfo
, pOutBufLen
);
1355 /* Return 1 if P is a valid pointer to an object of size SIZE. Return
1356 0 if P is NOT a valid pointer. Return -1 if we cannot validate P.
1358 This is called from alloc.c:valid_pointer_p. */
1360 w32_valid_pointer_p (void *p
, int size
)
1363 HANDLE h
= OpenProcess (PROCESS_VM_READ
, FALSE
, GetCurrentProcessId ());
1367 unsigned char *buf
= alloca (size
);
1368 int retval
= ReadProcessMemory (h
, p
, buf
, size
, &done
);
1379 /* Here's an overview of how the Windows build supports file names
1380 that cannot be encoded by the current system codepage.
1382 From the POV of Lisp and layers of C code above the functions here,
1383 Emacs on Windows pretends that its file names are encoded in UTF-8;
1384 see encode_file and decode_file on coding.c. Any file name that is
1385 passed as a unibyte string to C functions defined here is assumed
1386 to be in UTF-8 encoding. Any file name returned by functions
1387 defined here must be in UTF-8 encoding, with only a few exceptions
1388 reserved for a couple of special cases. (Be sure to use
1389 MAX_UTF8_PATH for char arrays that store UTF-8 encoded file names,
1390 as they can be much longer than MAX_PATH!)
1392 The UTF-8 encoded file names cannot be passed to system APIs, as
1393 Windows does not support that. Therefore, they are converted
1394 either to UTF-16 or to the ANSI codepage, depending on the value of
1395 w32-unicode-filenames, before calling any system APIs or CRT library
1396 functions. The default value of that variable is determined by the
1397 OS on which Emacs runs: nil on Windows 9X and t otherwise, but the
1398 user can change that default (although I don't see why would she
1401 The 4 functions defined below, filename_to_utf16, filename_to_ansi,
1402 filename_from_utf16, and filename_from_ansi, are the workhorses of
1403 these conversions. They rely on Windows native APIs
1404 MultiByteToWideChar and WideCharToMultiByte; we cannot use
1405 functions from coding.c here, because they allocate memory, which
1406 is a bad idea on the level of libc, which is what the functions
1407 here emulate. (If you worry about performance due to constant
1408 conversion back and forth from UTF-8 to UTF-16, then don't: first,
1409 it was measured to take only a few microseconds on a not-so-fast
1410 machine, and second, that's exactly what the ANSI APIs we used
1411 before did anyway, because they are just thin wrappers around the
1414 The variables file-name-coding-system and default-file-name-coding-system
1415 still exist, but are actually used only when a file name needs to
1416 be converted to the ANSI codepage. This happens all the time when
1417 w32-unicode-filenames is nil, but can also happen from time to time
1418 when it is t. Otherwise, these variables have no effect on file-name
1419 encoding when w32-unicode-filenames is t; this is similar to
1420 selection-coding-system.
1422 This arrangement works very well, but it has a few gotchas and
1425 . Lisp code that encodes or decodes file names manually should
1426 normally use 'utf-8' as the coding-system on Windows,
1427 disregarding file-name-coding-system. This is a somewhat
1428 unpleasant consequence, but it cannot be avoided. Fortunately,
1429 very few Lisp packages need to do that.
1431 More generally, passing to library functions (e.g., fopen or
1432 opendir) file names already encoded in the ANSI codepage is
1433 explicitly *verboten*, as all those functions, as shadowed and
1434 emulated here, assume they will receive UTF-8 encoded file names.
1436 For the same reasons, no CRT function or Win32 API can be called
1437 directly in Emacs sources, without either converting the file
1438 names from UTF-8 to UTF-16 or ANSI codepage, or going through
1439 some shadowing function defined here.
1441 . Environment variables stored in Vprocess_environment are encoded
1442 in the ANSI codepage, so if getenv/egetenv is used for a variable
1443 whose value is a file name or a list of directories, it needs to
1444 be converted to UTF-8, before it is used as argument to functions
1445 or decoded into a Lisp string.
1447 . File names passed to external libraries, like the image libraries
1448 and GnuTLS, need special handling. These libraries generally
1449 don't support UTF-16 or UTF-8 file names, so they must get file
1450 names encoded in the ANSI codepage. To facilitate using these
1451 libraries with file names that are not encodable in the ANSI
1452 codepage, use the function ansi_encode_filename, which will try
1453 to use the short 8+3 alias of a file name if that file name is
1454 not encodable in the ANSI codepage. See image.c and gnutls.c for
1455 examples of how this should be done.
1457 . Running subprocesses in non-ASCII directories and with non-ASCII
1458 file arguments is limited to the current codepage (even though
1459 Emacs is perfectly capable of finding an executable program file
1460 in a directory whose name cannot be encoded in the current
1461 codepage). This is because the command-line arguments are
1462 encoded _before_ they get to the w32-specific level, and the
1463 encoding is not known in advance (it doesn't have to be the
1464 current ANSI codepage), so w32proc.c functions cannot re-encode
1465 them in UTF-16. This should be fixed, but will also require
1466 changes in cmdproxy. The current limitation is not terribly bad
1467 anyway, since very few, if any, Windows console programs that are
1468 likely to be invoked by Emacs support UTF-16 encoded command
1471 . For similar reasons, server.el and emacsclient are also limited
1472 to the current ANSI codepage for now.
1474 . Emacs itself can only handle command-line arguments encoded in
1475 the current codepage.
1477 . Turning on w32-unicode-filename on Windows 9X (if it at all
1478 works) requires UNICOWS.DLL, which is thus a requirement even in
1479 non-GUI sessions, something the we previously avoided. */
1483 /* Converting file names from UTF-8 to either UTF-16 or the ANSI
1484 codepage defined by file-name-coding-system. */
1486 /* Current codepage for encoding file names. */
1487 static int file_name_codepage
;
1489 /* Produce a Windows ANSI codepage suitable for encoding file names.
1490 Return the information about that codepage in CP_INFO. */
1492 codepage_for_filenames (CPINFO
*cp_info
)
1494 /* A simple cache to avoid calling GetCPInfo every time we need to
1495 encode/decode a file name. The file-name encoding is not
1496 supposed to be changed too frequently, if ever. */
1497 static Lisp_Object last_file_name_encoding
;
1499 Lisp_Object current_encoding
;
1501 current_encoding
= Vfile_name_coding_system
;
1502 if (NILP (current_encoding
))
1503 current_encoding
= Vdefault_file_name_coding_system
;
1505 if (!EQ (last_file_name_encoding
, current_encoding
))
1507 /* Default to the current ANSI codepage. */
1508 file_name_codepage
= w32_ansi_code_page
;
1510 if (NILP (current_encoding
))
1512 char *cpname
= SDATA (SYMBOL_NAME (current_encoding
));
1513 char *cp
= NULL
, *end
;
1516 if (strncmp (cpname
, "cp", 2) == 0)
1518 else if (strncmp (cpname
, "windows-", 8) == 0)
1524 cpnum
= strtol (cp
, &end
, 10);
1525 if (cpnum
&& *end
== '\0' && end
- cp
>= 2)
1526 file_name_codepage
= cpnum
;
1530 if (!file_name_codepage
)
1531 file_name_codepage
= CP_ACP
; /* CP_ACP = 0, but let's not assume that */
1533 if (!GetCPInfo (file_name_codepage
, &cp
))
1535 file_name_codepage
= CP_ACP
;
1536 if (!GetCPInfo (file_name_codepage
, &cp
))
1543 return file_name_codepage
;
1547 filename_to_utf16 (const char *fn_in
, wchar_t *fn_out
)
1549 int result
= pMultiByteToWideChar (CP_UTF8
, MB_ERR_INVALID_CHARS
, fn_in
, -1,
1554 DWORD err
= GetLastError ();
1558 case ERROR_INVALID_FLAGS
:
1559 case ERROR_INVALID_PARAMETER
:
1562 case ERROR_INSUFFICIENT_BUFFER
:
1563 case ERROR_NO_UNICODE_TRANSLATION
:
1574 filename_from_utf16 (const wchar_t *fn_in
, char *fn_out
)
1576 int result
= pWideCharToMultiByte (CP_UTF8
, 0, fn_in
, -1,
1577 fn_out
, MAX_UTF8_PATH
, NULL
, NULL
);
1581 DWORD err
= GetLastError ();
1585 case ERROR_INVALID_FLAGS
:
1586 case ERROR_INVALID_PARAMETER
:
1589 case ERROR_INSUFFICIENT_BUFFER
:
1590 case ERROR_NO_UNICODE_TRANSLATION
:
1601 filename_to_ansi (const char *fn_in
, char *fn_out
)
1603 wchar_t fn_utf16
[MAX_PATH
];
1605 if (filename_to_utf16 (fn_in
, fn_utf16
) == 0)
1608 int codepage
= codepage_for_filenames (NULL
);
1610 result
= pWideCharToMultiByte (codepage
, 0, fn_utf16
, -1,
1611 fn_out
, MAX_PATH
, NULL
, NULL
);
1614 DWORD err
= GetLastError ();
1618 case ERROR_INVALID_FLAGS
:
1619 case ERROR_INVALID_PARAMETER
:
1622 case ERROR_INSUFFICIENT_BUFFER
:
1623 case ERROR_NO_UNICODE_TRANSLATION
:
1636 filename_from_ansi (const char *fn_in
, char *fn_out
)
1638 wchar_t fn_utf16
[MAX_PATH
];
1639 int codepage
= codepage_for_filenames (NULL
);
1640 int result
= pMultiByteToWideChar (codepage
, MB_ERR_INVALID_CHARS
, fn_in
, -1,
1641 fn_utf16
, MAX_PATH
);
1645 DWORD err
= GetLastError ();
1649 case ERROR_INVALID_FLAGS
:
1650 case ERROR_INVALID_PARAMETER
:
1653 case ERROR_INSUFFICIENT_BUFFER
:
1654 case ERROR_NO_UNICODE_TRANSLATION
:
1661 return filename_from_utf16 (fn_utf16
, fn_out
);
1666 /* The directory where we started, in UTF-8. */
1667 static char startup_dir
[MAX_UTF8_PATH
];
1669 /* Get the current working directory. */
1671 getcwd (char *dir
, int dirsize
)
1678 if (dirsize
<= strlen (startup_dir
))
1684 if (GetCurrentDirectory (MAXPATHLEN
, dir
) > 0)
1688 /* Emacs doesn't actually change directory itself, it stays in the
1689 same directory where it was started. */
1690 strcpy (dir
, startup_dir
);
1695 /* Emulate getloadavg. */
1697 struct load_sample
{
1704 /* Number of processors on this machine. */
1705 static unsigned num_of_processors
;
1707 /* We maintain 1-sec samples for the last 16 minutes in a circular buffer. */
1708 static struct load_sample samples
[16*60];
1709 static int first_idx
= -1, last_idx
= -1;
1710 static int max_idx
= sizeof (samples
) / sizeof (samples
[0]);
1715 int next_idx
= from
+ 1;
1717 if (next_idx
>= max_idx
)
1726 int prev_idx
= from
- 1;
1729 prev_idx
= max_idx
- 1;
1735 sample_system_load (ULONGLONG
*idle
, ULONGLONG
*kernel
, ULONGLONG
*user
)
1737 SYSTEM_INFO sysinfo
;
1738 FILETIME ft_idle
, ft_user
, ft_kernel
;
1740 /* Initialize the number of processors on this machine. */
1741 if (num_of_processors
<= 0)
1743 get_native_system_info (&sysinfo
);
1744 num_of_processors
= sysinfo
.dwNumberOfProcessors
;
1745 if (num_of_processors
<= 0)
1747 GetSystemInfo (&sysinfo
);
1748 num_of_processors
= sysinfo
.dwNumberOfProcessors
;
1750 if (num_of_processors
<= 0)
1751 num_of_processors
= 1;
1754 /* TODO: Take into account threads that are ready to run, by
1755 sampling the "\System\Processor Queue Length" performance
1756 counter. The code below accounts only for threads that are
1757 actually running. */
1759 if (get_system_times (&ft_idle
, &ft_kernel
, &ft_user
))
1761 ULARGE_INTEGER uidle
, ukernel
, uuser
;
1763 memcpy (&uidle
, &ft_idle
, sizeof (ft_idle
));
1764 memcpy (&ukernel
, &ft_kernel
, sizeof (ft_kernel
));
1765 memcpy (&uuser
, &ft_user
, sizeof (ft_user
));
1766 *idle
= uidle
.QuadPart
;
1767 *kernel
= ukernel
.QuadPart
;
1768 *user
= uuser
.QuadPart
;
1778 /* Produce the load average for a given time interval, using the
1779 samples in the samples[] array. WHICH can be 0, 1, or 2, meaning
1780 1-minute, 5-minute, or 15-minute average, respectively. */
1784 double retval
= -1.0;
1787 double span
= (which
== 0 ? 1.0 : (which
== 1 ? 5.0 : 15.0)) * 60;
1788 time_t now
= samples
[last_idx
].sample_time
;
1790 if (first_idx
!= last_idx
)
1792 for (idx
= buf_prev (last_idx
); ; idx
= buf_prev (idx
))
1794 tdiff
= difftime (now
, samples
[idx
].sample_time
);
1795 if (tdiff
>= span
- 2*DBL_EPSILON
*now
)
1798 samples
[last_idx
].kernel
+ samples
[last_idx
].user
1799 - (samples
[idx
].kernel
+ samples
[idx
].user
);
1800 long double idl
= samples
[last_idx
].idle
- samples
[idx
].idle
;
1802 retval
= (1.0 - idl
/ sys
) * num_of_processors
;
1805 if (idx
== first_idx
)
1814 getloadavg (double loadavg
[], int nelem
)
1817 ULONGLONG idle
, kernel
, user
;
1818 time_t now
= time (NULL
);
1820 /* If system time jumped back for some reason, delete all samples
1821 whose time is later than the current wall-clock time. This
1822 prevents load average figures from becoming frozen for prolonged
1823 periods of time, when system time is reset backwards. */
1826 while (difftime (now
, samples
[last_idx
].sample_time
) < -1.0)
1828 if (last_idx
== first_idx
)
1830 first_idx
= last_idx
= -1;
1833 last_idx
= buf_prev (last_idx
);
1837 /* Store another sample. We ignore samples that are less than 1 sec
1840 || (difftime (now
, samples
[last_idx
].sample_time
)
1841 >= 1.0 - 2*DBL_EPSILON
*now
))
1843 sample_system_load (&idle
, &kernel
, &user
);
1844 last_idx
= buf_next (last_idx
);
1845 samples
[last_idx
].sample_time
= now
;
1846 samples
[last_idx
].idle
= idle
;
1847 samples
[last_idx
].kernel
= kernel
;
1848 samples
[last_idx
].user
= user
;
1849 /* If the buffer has more that 15 min worth of samples, discard
1851 if (first_idx
== -1)
1852 first_idx
= last_idx
;
1853 while (first_idx
!= last_idx
1854 && (difftime (now
, samples
[first_idx
].sample_time
)
1855 >= 15.0*60 + 2*DBL_EPSILON
*now
))
1856 first_idx
= buf_next (first_idx
);
1859 for (elem
= 0; elem
< nelem
; elem
++)
1861 double avg
= getavg (elem
);
1865 loadavg
[elem
] = avg
;
1871 /* Emulate getpwuid, getpwnam and others. */
1873 #define PASSWD_FIELD_SIZE 256
1875 static char dflt_passwd_name
[PASSWD_FIELD_SIZE
];
1876 static char dflt_passwd_passwd
[PASSWD_FIELD_SIZE
];
1877 static char dflt_passwd_gecos
[PASSWD_FIELD_SIZE
];
1878 static char dflt_passwd_dir
[MAX_UTF8_PATH
];
1879 static char dflt_passwd_shell
[MAX_UTF8_PATH
];
1881 static struct passwd dflt_passwd
=
1893 static char dflt_group_name
[GNLEN
+1];
1895 static struct group dflt_group
=
1897 /* When group information is not available, we return this as the
1898 group for all files. */
1906 return dflt_passwd
.pw_uid
;
1912 /* I could imagine arguing for checking to see whether the user is
1913 in the Administrators group and returning a UID of 0 for that
1914 case, but I don't know how wise that would be in the long run. */
1921 return dflt_passwd
.pw_gid
;
1931 getpwuid (unsigned uid
)
1933 if (uid
== dflt_passwd
.pw_uid
)
1934 return &dflt_passwd
;
1939 getgrgid (gid_t gid
)
1945 getpwnam (char *name
)
1949 pw
= getpwuid (getuid ());
1953 if (xstrcasecmp (name
, pw
->pw_name
))
1960 init_user_info (void)
1962 /* Find the user's real name by opening the process token and
1963 looking up the name associated with the user-sid in that token.
1965 Use the relative portion of the identifier authority value from
1966 the user-sid as the user id value (same for group id using the
1967 primary group sid from the process token). */
1969 char uname
[UNLEN
+1], gname
[GNLEN
+1], domain
[1025];
1970 DWORD ulength
= sizeof (uname
), dlength
= sizeof (domain
), needed
;
1971 DWORD glength
= sizeof (gname
);
1972 HANDLE token
= NULL
;
1973 SID_NAME_USE user_type
;
1974 unsigned char *buf
= NULL
;
1976 TOKEN_USER user_token
;
1977 TOKEN_PRIMARY_GROUP group_token
;
1980 result
= open_process_token (GetCurrentProcess (), TOKEN_QUERY
, &token
);
1983 result
= get_token_information (token
, TokenUser
, NULL
, 0, &blen
);
1984 if (!result
&& GetLastError () == ERROR_INSUFFICIENT_BUFFER
)
1986 buf
= xmalloc (blen
);
1987 result
= get_token_information (token
, TokenUser
,
1988 (LPVOID
)buf
, blen
, &needed
);
1991 memcpy (&user_token
, buf
, sizeof (user_token
));
1992 result
= lookup_account_sid (NULL
, user_token
.User
.Sid
,
1994 domain
, &dlength
, &user_type
);
2002 strcpy (dflt_passwd
.pw_name
, uname
);
2003 /* Determine a reasonable uid value. */
2004 if (xstrcasecmp ("administrator", uname
) == 0)
2006 dflt_passwd
.pw_uid
= 500; /* well-known Administrator uid */
2007 dflt_passwd
.pw_gid
= 513; /* well-known None gid */
2011 /* Use the last sub-authority value of the RID, the relative
2012 portion of the SID, as user/group ID. */
2013 dflt_passwd
.pw_uid
= get_rid (user_token
.User
.Sid
);
2015 /* Get group id and name. */
2016 result
= get_token_information (token
, TokenPrimaryGroup
,
2017 (LPVOID
)buf
, blen
, &needed
);
2018 if (!result
&& GetLastError () == ERROR_INSUFFICIENT_BUFFER
)
2020 buf
= xrealloc (buf
, blen
= needed
);
2021 result
= get_token_information (token
, TokenPrimaryGroup
,
2022 (LPVOID
)buf
, blen
, &needed
);
2026 memcpy (&group_token
, buf
, sizeof (group_token
));
2027 dflt_passwd
.pw_gid
= get_rid (group_token
.PrimaryGroup
);
2028 dlength
= sizeof (domain
);
2029 /* If we can get at the real Primary Group name, use that.
2030 Otherwise, the default group name was already set to
2031 "None" in globals_of_w32. */
2032 if (lookup_account_sid (NULL
, group_token
.PrimaryGroup
,
2033 gname
, &glength
, NULL
, &dlength
,
2035 strcpy (dflt_group_name
, gname
);
2038 dflt_passwd
.pw_gid
= dflt_passwd
.pw_uid
;
2041 /* If security calls are not supported (presumably because we
2042 are running under Windows 9X), fallback to this: */
2043 else if (GetUserName (uname
, &ulength
))
2045 strcpy (dflt_passwd
.pw_name
, uname
);
2046 if (xstrcasecmp ("administrator", uname
) == 0)
2047 dflt_passwd
.pw_uid
= 0;
2049 dflt_passwd
.pw_uid
= 123;
2050 dflt_passwd
.pw_gid
= dflt_passwd
.pw_uid
;
2054 strcpy (dflt_passwd
.pw_name
, "unknown");
2055 dflt_passwd
.pw_uid
= 123;
2056 dflt_passwd
.pw_gid
= 123;
2058 dflt_group
.gr_gid
= dflt_passwd
.pw_gid
;
2060 /* Set dir and shell from environment variables. */
2061 if (w32_unicode_filenames
)
2063 wchar_t *home
= _wgetenv (L
"HOME");
2064 wchar_t *shell
= _wgetenv (L
"SHELL");
2066 /* Ensure HOME and SHELL are defined. */
2071 filename_from_utf16 (home
, dflt_passwd
.pw_dir
);
2072 filename_from_utf16 (shell
, dflt_passwd
.pw_shell
);
2076 char *home
= getenv ("HOME");
2077 char *shell
= getenv ("SHELL");
2083 filename_from_ansi (home
, dflt_passwd
.pw_dir
);
2084 filename_from_ansi (shell
, dflt_passwd
.pw_shell
);
2089 CloseHandle (token
);
2095 /* rand () on NT gives us 15 random bits...hack together 30 bits. */
2096 return ((rand () << 15) | rand ());
2105 /* Return the maximum length in bytes of a multibyte character
2106 sequence encoded in the current ANSI codepage. This is required to
2107 correctly walk the encoded file names one character at a time. */
2109 max_filename_mbslen (void)
2113 codepage_for_filenames (&cp_info
);
2114 return cp_info
.MaxCharSize
;
2117 /* Normalize filename by converting in-place all of its path
2118 separators to the separator specified by PATH_SEP. */
2121 normalize_filename (register char *fp
, char path_sep
)
2125 /* Always lower-case drive letters a-z, even if the filesystem
2126 preserves case in filenames.
2127 This is so filenames can be compared by string comparison
2128 functions that are case-sensitive. Even case-preserving filesystems
2129 do not distinguish case in drive letters. */
2132 if (*p2
== ':' && *fp
>= 'A' && *fp
<= 'Z')
2140 if ((*fp
== '/' || *fp
== '\\') && *fp
!= path_sep
)
2146 /* Destructively turn backslashes into slashes. */
2148 dostounix_filename (register char *p
)
2150 normalize_filename (p
, '/');
2153 /* Destructively turn slashes into backslashes. */
2155 unixtodos_filename (register char *p
)
2157 normalize_filename (p
, '\\');
2160 /* Remove all CR's that are followed by a LF.
2161 (From msdos.c...probably should figure out a way to share it,
2162 although this code isn't going to ever change.) */
2164 crlf_to_lf (register int n
, register unsigned char *buf
)
2166 unsigned char *np
= buf
;
2167 unsigned char *startp
= buf
;
2168 unsigned char *endp
= buf
+ n
;
2172 while (buf
< endp
- 1)
2176 if (*(++buf
) != 0x0a)
2187 /* Parse the root part of file name, if present. Return length and
2188 optionally store pointer to char after root. */
2190 parse_root (const char * name
, const char ** pPath
)
2192 const char * start
= name
;
2197 /* find the root name of the volume if given */
2198 if (isalpha (name
[0]) && name
[1] == ':')
2200 /* skip past drive specifier */
2202 if (IS_DIRECTORY_SEP (name
[0]))
2205 else if (IS_DIRECTORY_SEP (name
[0]) && IS_DIRECTORY_SEP (name
[1]))
2212 if (IS_DIRECTORY_SEP (*name
) && --slashes
== 0)
2217 if (IS_DIRECTORY_SEP (name
[0]))
2224 return name
- start
;
2227 /* Get long base name for name; name is assumed to be absolute. */
2229 get_long_basename (char * name
, char * buf
, int size
)
2231 HANDLE dir_handle
= INVALID_HANDLE_VALUE
;
2232 char fname_utf8
[MAX_UTF8_PATH
];
2236 /* Must be valid filename, no wild cards or other invalid characters. */
2237 if (strpbrk (name
, "*?|<>\""))
2240 if (w32_unicode_filenames
)
2242 wchar_t fname_utf16
[MAX_PATH
];
2243 WIN32_FIND_DATAW find_data_wide
;
2245 filename_to_utf16 (name
, fname_utf16
);
2246 dir_handle
= FindFirstFileW (fname_utf16
, &find_data_wide
);
2247 if (dir_handle
!= INVALID_HANDLE_VALUE
)
2248 cstatus
= filename_from_utf16 (find_data_wide
.cFileName
, fname_utf8
);
2252 char fname_ansi
[MAX_PATH
];
2253 WIN32_FIND_DATAA find_data_ansi
;
2255 filename_to_ansi (name
, fname_ansi
);
2256 /* If the ANSI name includes ? characters, it is not encodable
2257 in the ANSI codepage. In that case, we deliver the question
2258 marks to the caller; calling FindFirstFileA in this case
2259 could return some unrelated file name in the same
2261 if (_mbspbrk (fname_ansi
, "?"))
2263 /* Find the basename of fname_ansi. */
2264 char *p
= strrchr (fname_ansi
, '\\');
2270 cstatus
= filename_from_ansi (p
, fname_utf8
);
2274 dir_handle
= FindFirstFileA (fname_ansi
, &find_data_ansi
);
2275 if (dir_handle
!= INVALID_HANDLE_VALUE
)
2276 cstatus
= filename_from_ansi (find_data_ansi
.cFileName
, fname_utf8
);
2280 if (cstatus
== 0 && (len
= strlen (fname_utf8
)) < size
)
2281 memcpy (buf
, fname_utf8
, len
+ 1);
2285 if (dir_handle
!= INVALID_HANDLE_VALUE
)
2286 FindClose (dir_handle
);
2291 /* Get long name for file, if possible (assumed to be absolute). */
2293 w32_get_long_filename (char * name
, char * buf
, int size
)
2298 char full
[ MAX_UTF8_PATH
];
2301 len
= strlen (name
);
2302 if (len
>= MAX_UTF8_PATH
)
2305 /* Use local copy for destructive modification. */
2306 memcpy (full
, name
, len
+1);
2307 unixtodos_filename (full
);
2309 /* Copy root part verbatim. */
2310 len
= parse_root (full
, (const char **)&p
);
2311 memcpy (o
, full
, len
);
2316 while (p
!= NULL
&& *p
)
2319 p
= strchr (q
, '\\');
2321 len
= get_long_basename (full
, o
, size
);
2344 w32_get_short_filename (char * name
, char * buf
, int size
)
2346 if (w32_unicode_filenames
)
2348 wchar_t name_utf16
[MAX_PATH
], short_name
[MAX_PATH
];
2349 unsigned int retval
;
2351 filename_to_utf16 (name
, name_utf16
);
2352 retval
= GetShortPathNameW (name_utf16
, short_name
, size
);
2353 if (retval
&& retval
< size
)
2354 filename_from_utf16 (short_name
, buf
);
2359 char name_ansi
[MAX_PATH
];
2361 filename_to_ansi (name
, name_ansi
);
2362 return GetShortPathNameA (name_ansi
, buf
, size
);
2366 /* Re-encode FILENAME, a UTF-8 encoded unibyte string, using the
2367 MS-Windows ANSI codepage. If FILENAME includes characters not
2368 supported by the ANSI codepage, return the 8+3 alias of FILENAME,
2369 if it exists. This is needed because the w32 build wants to
2370 support file names outside of the system locale, but image
2371 libraries typically don't support wide (a.k.a. "Unicode") APIs
2372 required for that. */
2375 ansi_encode_filename (Lisp_Object filename
)
2377 Lisp_Object encoded_filename
;
2378 char fname
[MAX_PATH
];
2380 filename_to_ansi (SSDATA (filename
), fname
);
2381 if (_mbspbrk (fname
, "?"))
2383 char shortname
[MAX_PATH
];
2385 if (w32_get_short_filename (SDATA (filename
), shortname
, MAX_PATH
))
2387 dostounix_filename (shortname
);
2388 encoded_filename
= build_string (shortname
);
2392 encoded_filename
= build_unibyte_string (fname
);
2393 return encoded_filename
;
2397 is_unc_volume (const char *filename
)
2399 const char *ptr
= filename
;
2401 if (!IS_DIRECTORY_SEP (ptr
[0]) || !IS_DIRECTORY_SEP (ptr
[1]) || !ptr
[2])
2404 if (strpbrk (ptr
+ 2, "*?|<>\"\\/"))
2410 /* Emulate the Posix unsetenv. */
2412 unsetenv (const char *name
)
2418 if (name
== NULL
|| *name
== '\0' || strchr (name
, '=') != NULL
)
2423 name_len
= strlen (name
);
2424 /* MS docs says an environment variable cannot be longer than 32K. */
2425 if (name_len
> 32767)
2430 /* It is safe to use 'alloca' with 32K size, since the stack is at
2431 least 2MB, and we set it to 8MB in the link command line. */
2432 var
= alloca (name_len
+ 2);
2433 strncpy (var
, name
, name_len
);
2434 var
[name_len
++] = '=';
2435 var
[name_len
] = '\0';
2436 return _putenv (var
);
2439 /* MS _putenv doesn't support removing a variable when the argument
2440 does not include the '=' character, so we fix that here. */
2442 sys_putenv (char *str
)
2444 const char *const name_end
= strchr (str
, '=');
2446 if (name_end
== NULL
)
2448 /* Remove the variable from the environment. */
2449 return unsetenv (str
);
2452 return _putenv (str
);
2455 #define REG_ROOT "SOFTWARE\\GNU\\Emacs"
2458 w32_get_resource (char *key
, LPDWORD lpdwtype
)
2461 HKEY hrootkey
= NULL
;
2464 /* Check both the current user and the local machine to see if
2465 we have any resources. */
2467 if (RegOpenKeyEx (HKEY_CURRENT_USER
, REG_ROOT
, 0, KEY_READ
, &hrootkey
) == ERROR_SUCCESS
)
2471 if (RegQueryValueEx (hrootkey
, key
, NULL
, NULL
, NULL
, &cbData
) == ERROR_SUCCESS
2472 && (lpvalue
= xmalloc (cbData
)) != NULL
2473 && RegQueryValueEx (hrootkey
, key
, NULL
, lpdwtype
, lpvalue
, &cbData
) == ERROR_SUCCESS
)
2475 RegCloseKey (hrootkey
);
2481 RegCloseKey (hrootkey
);
2484 if (RegOpenKeyEx (HKEY_LOCAL_MACHINE
, REG_ROOT
, 0, KEY_READ
, &hrootkey
) == ERROR_SUCCESS
)
2488 if (RegQueryValueEx (hrootkey
, key
, NULL
, NULL
, NULL
, &cbData
) == ERROR_SUCCESS
2489 && (lpvalue
= xmalloc (cbData
)) != NULL
2490 && RegQueryValueEx (hrootkey
, key
, NULL
, lpdwtype
, lpvalue
, &cbData
) == ERROR_SUCCESS
)
2492 RegCloseKey (hrootkey
);
2498 RegCloseKey (hrootkey
);
2504 /* The argv[] array holds ANSI-encoded strings, and so this function
2505 works with ANS_encoded strings. */
2507 init_environment (char ** argv
)
2509 static const char * const tempdirs
[] = {
2510 "$TMPDIR", "$TEMP", "$TMP", "c:/"
2515 const int imax
= sizeof (tempdirs
) / sizeof (tempdirs
[0]);
2517 /* Implementation note: This function explicitly works with ANSI
2518 file names, not with UTF-8 encoded file names. This is because
2519 this function pushes variables into the Emacs's environment, and
2520 the environment variables are always assumed to be in the
2521 locale-specific encoding. Do NOT call any functions that accept
2522 UTF-8 file names from this function! */
2524 /* Make sure they have a usable $TMPDIR. Many Emacs functions use
2525 temporary files and assume "/tmp" if $TMPDIR is unset, which
2526 will break on DOS/Windows. Refuse to work if we cannot find
2527 a directory, not even "c:/", usable for that purpose. */
2528 for (i
= 0; i
< imax
; i
++)
2530 const char *tmp
= tempdirs
[i
];
2533 tmp
= getenv (tmp
+ 1);
2534 /* Note that `access' can lie to us if the directory resides on a
2535 read-only filesystem, like CD-ROM or a write-protected floppy.
2536 The only way to be really sure is to actually create a file and
2537 see if it succeeds. But I think that's too much to ask. */
2539 /* MSVCRT's _access crashes with D_OK, so we use our replacement. */
2540 if (tmp
&& sys_access (tmp
, D_OK
) == 0)
2542 char * var
= alloca (strlen (tmp
) + 8);
2543 sprintf (var
, "TMPDIR=%s", tmp
);
2544 _putenv (strdup (var
));
2551 Fcons (build_string ("no usable temporary directories found!!"),
2553 "While setting TMPDIR: ");
2555 /* Check for environment variables and use registry settings if they
2556 don't exist. Fallback on default values where applicable. */
2561 char locale_name
[32];
2562 char default_home
[MAX_PATH
];
2565 static const struct env_entry
2571 /* If the default value is NULL, we will use the value from the
2572 outside environment or the Registry, but will not push the
2573 variable into the Emacs environment if it is defined neither
2574 in the Registry nor in the outside environment. */
2576 {"PRELOAD_WINSOCK", NULL
},
2577 {"emacs_dir", "C:/emacs"},
2578 {"EMACSLOADPATH", NULL
},
2579 {"SHELL", "cmdproxy.exe"}, /* perhaps it is somewhere on PATH */
2580 {"EMACSDATA", NULL
},
2581 {"EMACSPATH", NULL
},
2588 #define N_ENV_VARS sizeof (dflt_envvars)/sizeof (dflt_envvars[0])
2590 /* We need to copy dflt_envvars[] and work on the copy because we
2591 don't want the dumped Emacs to inherit the values of
2592 environment variables we saw during dumping (which could be on
2593 a different system). The defaults above must be left intact. */
2594 struct env_entry env_vars
[N_ENV_VARS
];
2596 for (i
= 0; i
< N_ENV_VARS
; i
++)
2597 env_vars
[i
] = dflt_envvars
[i
];
2599 /* For backwards compatibility, check if a .emacs file exists in C:/
2600 If not, then we can try to default to the appdata directory under the
2601 user's profile, which is more likely to be writable. */
2602 if (sys_access ("C:/.emacs", F_OK
) != 0)
2604 HRESULT profile_result
;
2605 /* Dynamically load ShGetFolderPath, as it won't exist on versions
2606 of Windows 95 and NT4 that have not been updated to include
2608 ShGetFolderPath_fn get_folder_path
;
2609 get_folder_path
= (ShGetFolderPath_fn
)
2610 GetProcAddress (GetModuleHandle ("shell32.dll"), "SHGetFolderPathA");
2612 if (get_folder_path
!= NULL
)
2614 profile_result
= get_folder_path (NULL
, CSIDL_APPDATA
, NULL
,
2617 /* If we can't get the appdata dir, revert to old behavior. */
2618 if (profile_result
== S_OK
)
2620 env_vars
[0].def_value
= default_home
;
2626 /* Get default locale info and use it for LANG. */
2627 if (GetLocaleInfo (LOCALE_USER_DEFAULT
,
2628 LOCALE_SABBREVLANGNAME
| LOCALE_USE_CP_ACP
,
2629 locale_name
, sizeof (locale_name
)))
2631 for (i
= 0; i
< N_ENV_VARS
; i
++)
2633 if (strcmp (env_vars
[i
].name
, "LANG") == 0)
2635 env_vars
[i
].def_value
= locale_name
;
2641 #define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */
2643 /* Treat emacs_dir specially: set it unconditionally based on our
2647 char modname
[MAX_PATH
];
2649 if (!GetModuleFileNameA (NULL
, modname
, MAX_PATH
))
2651 if ((p
= _mbsrchr (modname
, '\\')) == NULL
)
2655 if ((p
= _mbsrchr (modname
, '\\'))
2656 /* From bin means installed Emacs, from src means uninstalled. */
2657 && (xstrcasecmp (p
, "\\bin") == 0 || xstrcasecmp (p
, "\\src") == 0))
2659 char buf
[SET_ENV_BUF_SIZE
];
2660 int within_build_tree
= xstrcasecmp (p
, "\\src") == 0;
2663 for (p
= modname
; *p
; p
= CharNext (p
))
2664 if (*p
== '\\') *p
= '/';
2666 _snprintf (buf
, sizeof (buf
)-1, "emacs_dir=%s", modname
);
2667 _putenv (strdup (buf
));
2668 /* If we are running from the Posix-like build tree, define
2669 SHELL to point to our own cmdproxy. The loop below will
2670 then disregard PATH_EXEC and the default value. */
2671 if (within_build_tree
)
2673 _snprintf (buf
, sizeof (buf
) - 1,
2674 "SHELL=%s/nt/cmdproxy.exe", modname
);
2675 _putenv (strdup (buf
));
2680 for (i
= 0; i
< N_ENV_VARS
; i
++)
2682 if (!getenv (env_vars
[i
].name
))
2685 char bufc
[SET_ENV_BUF_SIZE
];
2687 if ((lpval
= w32_get_resource (env_vars
[i
].name
, &dwType
)) == NULL
2688 /* Also ignore empty environment variables. */
2693 if (strcmp (env_vars
[i
].name
, "SHELL") == 0)
2695 /* Look for cmdproxy.exe in every directory in
2696 PATH_EXEC. FIXME: This does not find cmdproxy
2697 in nt/ when we run uninstalled. */
2698 char fname
[MAX_PATH
];
2699 const char *pstart
= PATH_EXEC
, *pend
;
2702 pend
= _mbschr (pstart
, ';');
2704 pend
= pstart
+ strlen (pstart
);
2705 /* Be defensive against series of ;;; characters. */
2708 strncpy (fname
, pstart
, pend
- pstart
);
2709 fname
[pend
- pstart
] = '/';
2710 strcpy (&fname
[pend
- pstart
+ 1], "cmdproxy.exe");
2711 ExpandEnvironmentStrings ((LPSTR
) fname
, bufc
,
2713 if (sys_access (bufc
, F_OK
) == 0)
2726 /* If not found in any directory, use the
2727 default as the last resort. */
2728 lpval
= env_vars
[i
].def_value
;
2729 dwType
= REG_EXPAND_SZ
;
2735 lpval
= env_vars
[i
].def_value
;
2736 dwType
= REG_EXPAND_SZ
;
2738 if (strcmp (env_vars
[i
].name
, "HOME") == 0 && !appdata
)
2739 Vdelayed_warnings_list
2740 = Fcons (listn (CONSTYPE_HEAP
, 2,
2741 intern ("initialization"),
2742 build_string ("Setting HOME to C:\\ by default is deprecated")),
2743 Vdelayed_warnings_list
);
2748 char buf1
[SET_ENV_BUF_SIZE
], buf2
[SET_ENV_BUF_SIZE
];
2750 if (dwType
== REG_EXPAND_SZ
)
2751 ExpandEnvironmentStrings ((LPSTR
) lpval
, buf1
, sizeof (buf1
));
2752 else if (dwType
== REG_SZ
)
2753 strcpy (buf1
, lpval
);
2754 if (dwType
== REG_EXPAND_SZ
|| dwType
== REG_SZ
)
2756 _snprintf (buf2
, sizeof (buf2
)-1, "%s=%s", env_vars
[i
].name
,
2758 _putenv (strdup (buf2
));
2768 /* Rebuild system configuration to reflect invoking system. */
2769 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2771 /* Another special case: on NT, the PATH variable is actually named
2772 "Path" although cmd.exe (perhaps NT itself) arranges for
2773 environment variable lookup and setting to be case insensitive.
2774 However, Emacs assumes a fully case sensitive environment, so we
2775 need to change "Path" to "PATH" to match the expectations of
2776 various elisp packages. We do this by the sneaky method of
2777 modifying the string in the C runtime environ entry.
2779 The same applies to COMSPEC. */
2783 for (envp
= environ
; *envp
; envp
++)
2784 if (_strnicmp (*envp
, "PATH=", 5) == 0)
2785 memcpy (*envp
, "PATH=", 5);
2786 else if (_strnicmp (*envp
, "COMSPEC=", 8) == 0)
2787 memcpy (*envp
, "COMSPEC=", 8);
2790 /* Remember the initial working directory for getcwd. */
2791 /* FIXME: Do we need to resolve possible symlinks in startup_dir?
2792 Does it matter anywhere in Emacs? */
2793 if (w32_unicode_filenames
)
2795 wchar_t wstartup_dir
[MAX_PATH
];
2797 if (!GetCurrentDirectoryW (MAX_PATH
, wstartup_dir
))
2799 filename_from_utf16 (wstartup_dir
, startup_dir
);
2803 char astartup_dir
[MAX_PATH
];
2805 if (!GetCurrentDirectoryA (MAX_PATH
, astartup_dir
))
2807 filename_from_ansi (astartup_dir
, startup_dir
);
2811 static char modname
[MAX_PATH
];
2813 if (!GetModuleFileNameA (NULL
, modname
, MAX_PATH
))
2818 /* Determine if there is a middle mouse button, to allow parse_button
2819 to decide whether right mouse events should be mouse-2 or
2821 w32_num_mouse_buttons
= GetSystemMetrics (SM_CMOUSEBUTTONS
);
2826 /* Called from expand-file-name when default-directory is not a string. */
2829 emacs_root_dir (void)
2831 static char root_dir
[MAX_UTF8_PATH
];
2834 p
= getenv ("emacs_dir");
2837 filename_from_ansi (p
, root_dir
);
2838 root_dir
[parse_root (root_dir
, NULL
)] = '\0';
2839 dostounix_filename (root_dir
);
2843 #include <sys/timeb.h>
2845 /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */
2847 gettimeofday (struct timeval
*__restrict tv
, struct timezone
*__restrict tz
)
2852 tv
->tv_sec
= tb
.time
;
2853 tv
->tv_usec
= tb
.millitm
* 1000L;
2854 /* Implementation note: _ftime sometimes doesn't update the dstflag
2855 according to the new timezone when the system timezone is
2856 changed. We could fix that by using GetSystemTime and
2857 GetTimeZoneInformation, but that doesn't seem necessary, since
2858 Emacs always calls gettimeofday with the 2nd argument NULL (see
2859 current_emacs_time). */
2862 tz
->tz_minuteswest
= tb
.timezone
; /* minutes west of Greenwich */
2863 tz
->tz_dsttime
= tb
.dstflag
; /* type of dst correction */
2868 /* Emulate fdutimens. */
2870 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2871 TIMESPEC[0] and TIMESPEC[1], respectively.
2872 FD must be either negative -- in which case it is ignored --
2873 or a file descriptor that is open on FILE.
2874 If FD is nonnegative, then FILE can be NULL, which means
2875 use just futimes instead of utimes.
2876 If TIMESPEC is null, FAIL.
2877 Return 0 on success, -1 (setting errno) on failure. */
2880 fdutimens (int fd
, char const *file
, struct timespec
const timespec
[2])
2887 if (fd
< 0 && !file
)
2892 /* _futime's prototype defines 2nd arg as having the type 'struct
2893 _utimbuf', while utime needs to accept 'struct utimbuf' for
2894 compatibility with Posix. So we need to use 2 different (but
2895 equivalent) types to avoid compiler warnings, sigh. */
2898 struct _utimbuf _ut
;
2900 _ut
.actime
= timespec
[0].tv_sec
;
2901 _ut
.modtime
= timespec
[1].tv_sec
;
2902 return _futime (fd
, &_ut
);
2908 ut
.actime
= timespec
[0].tv_sec
;
2909 ut
.modtime
= timespec
[1].tv_sec
;
2910 /* Call 'utime', which is implemented below, not the MS library
2911 function, which fails on directories. */
2912 return utime (file
, &ut
);
2917 /* ------------------------------------------------------------------------- */
2918 /* IO support and wrapper functions for the Windows API. */
2919 /* ------------------------------------------------------------------------- */
2921 /* Place a wrapper around the MSVC version of ctime. It returns NULL
2922 on network directories, so we handle that case here.
2923 (Ulrich Leodolter, 1/11/95). */
2925 sys_ctime (const time_t *t
)
2927 char *str
= (char *) ctime (t
);
2928 return (str
? str
: "Sun Jan 01 00:00:00 1970");
2931 /* Emulate sleep...we could have done this with a define, but that
2932 would necessitate including windows.h in the files that used it.
2933 This is much easier. */
2935 sys_sleep (int seconds
)
2937 Sleep (seconds
* 1000);
2940 /* Internal MSVC functions for low-level descriptor munging */
2941 extern int __cdecl
_set_osfhnd (int fd
, long h
);
2942 extern int __cdecl
_free_osfhnd (int fd
);
2944 /* parallel array of private info on file handles */
2945 filedesc fd_info
[ MAXDESC
];
2947 typedef struct volume_info_data
{
2948 struct volume_info_data
* next
;
2950 /* time when info was obtained */
2953 /* actual volume info */
2962 /* Global referenced by various functions. */
2963 static volume_info_data volume_info
;
2965 /* Vector to indicate which drives are local and fixed (for which cached
2966 data never expires). */
2967 static BOOL fixed_drives
[26];
2969 /* Consider cached volume information to be stale if older than 10s,
2970 at least for non-local drives. Info for fixed drives is never stale. */
2971 #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' )
2972 #define VOLINFO_STILL_VALID( root_dir, info ) \
2973 ( ( isalpha (root_dir[0]) && \
2974 fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \
2975 || GetTickCount () - info->timestamp < 10000 )
2977 /* Cache support functions. */
2979 /* Simple linked list with linear search is sufficient. */
2980 static volume_info_data
*volume_cache
= NULL
;
2982 static volume_info_data
*
2983 lookup_volume_info (char * root_dir
)
2985 volume_info_data
* info
;
2987 for (info
= volume_cache
; info
; info
= info
->next
)
2988 if (xstrcasecmp (info
->root_dir
, root_dir
) == 0)
2994 add_volume_info (char * root_dir
, volume_info_data
* info
)
2996 info
->root_dir
= xstrdup (root_dir
);
2997 unixtodos_filename (info
->root_dir
);
2998 info
->next
= volume_cache
;
2999 volume_cache
= info
;
3003 /* Wrapper for GetVolumeInformation, which uses caching to avoid
3004 performance penalty (~2ms on 486 for local drives, 7.5ms for local
3005 cdrom drive, ~5-10ms or more for remote drives on LAN). */
3006 static volume_info_data
*
3007 GetCachedVolumeInformation (char * root_dir
)
3009 volume_info_data
* info
;
3010 char default_root
[ MAX_UTF8_PATH
];
3011 char name
[MAX_PATH
+1];
3012 char type
[MAX_PATH
+1];
3014 /* NULL for root_dir means use root from current directory. */
3015 if (root_dir
== NULL
)
3017 if (w32_unicode_filenames
)
3019 wchar_t curdirw
[MAX_PATH
];
3021 if (GetCurrentDirectoryW (MAX_PATH
, curdirw
) == 0)
3023 filename_from_utf16 (curdirw
, default_root
);
3027 char curdira
[MAX_PATH
];
3029 if (GetCurrentDirectoryA (MAX_PATH
, curdira
) == 0)
3031 filename_from_ansi (curdira
, default_root
);
3033 parse_root (default_root
, (const char **)&root_dir
);
3035 root_dir
= default_root
;
3038 /* Local fixed drives can be cached permanently. Removable drives
3039 cannot be cached permanently, since the volume name and serial
3040 number (if nothing else) can change. Remote drives should be
3041 treated as if they are removable, since there is no sure way to
3042 tell whether they are or not. Also, the UNC association of drive
3043 letters mapped to remote volumes can be changed at any time (even
3044 by other processes) without notice.
3046 As a compromise, so we can benefit from caching info for remote
3047 volumes, we use a simple expiry mechanism to invalidate cache
3048 entries that are more than ten seconds old. */
3051 /* No point doing this, because WNetGetConnection is even slower than
3052 GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW,
3053 GetDriveType is about the only call of this type which does not
3054 involve network access, and so is extremely quick). */
3056 /* Map drive letter to UNC if remote. */
3057 if (isalpha (root_dir
[0]) && !fixed
[DRIVE_INDEX (root_dir
[0])])
3059 char remote_name
[ 256 ];
3060 char drive
[3] = { root_dir
[0], ':' };
3062 if (WNetGetConnection (drive
, remote_name
, sizeof (remote_name
))
3064 /* do something */ ;
3068 info
= lookup_volume_info (root_dir
);
3070 if (info
== NULL
|| ! VOLINFO_STILL_VALID (root_dir
, info
))
3076 /* Info is not cached, or is stale. */
3077 if (w32_unicode_filenames
)
3079 wchar_t root_w
[MAX_PATH
];
3080 wchar_t name_w
[MAX_PATH
+1];
3081 wchar_t type_w
[MAX_PATH
+1];
3083 filename_to_utf16 (root_dir
, root_w
);
3084 if (!GetVolumeInformationW (root_w
,
3085 name_w
, sizeof (name_w
),
3089 type_w
, sizeof (type_w
)))
3091 /* Hmm... not really 100% correct, as these 2 are not file
3093 filename_from_utf16 (name_w
, name
);
3094 filename_from_utf16 (type_w
, type
);
3098 char root_a
[MAX_PATH
];
3099 char name_a
[MAX_PATH
+1];
3100 char type_a
[MAX_PATH
+1];
3102 filename_to_ansi (root_dir
, root_a
);
3103 if (!GetVolumeInformationA (root_a
,
3104 name_a
, sizeof (name_a
),
3108 type_a
, sizeof (type_a
)))
3110 filename_from_ansi (name_a
, name
);
3111 filename_from_ansi (type_a
, type
);
3114 /* Cache the volume information for future use, overwriting existing
3115 entry if present. */
3118 info
= xmalloc (sizeof (volume_info_data
));
3119 add_volume_info (root_dir
, info
);
3127 info
->name
= xstrdup (name
);
3128 unixtodos_filename (info
->name
);
3129 info
->serialnum
= serialnum
;
3130 info
->maxcomp
= maxcomp
;
3131 info
->flags
= flags
;
3132 info
->type
= xstrdup (type
);
3133 info
->timestamp
= GetTickCount ();
3139 /* Get information on the volume where NAME is held; set path pointer to
3140 start of pathname in NAME (past UNC header\volume header if present),
3141 if pPath is non-NULL.
3143 Note: if NAME includes symlinks, the information is for the volume
3144 of the symlink, not of its target. That's because, even though
3145 GetVolumeInformation returns information about the symlink target
3146 of its argument, we only pass the root directory to
3147 GetVolumeInformation, not the full NAME. */
3149 get_volume_info (const char * name
, const char ** pPath
)
3151 char temp
[MAX_UTF8_PATH
];
3152 char *rootname
= NULL
; /* default to current volume */
3153 volume_info_data
* info
;
3154 int root_len
= parse_root (name
, pPath
);
3159 /* Copy the root name of the volume, if given. */
3162 strncpy (temp
, name
, root_len
);
3163 temp
[root_len
] = '\0';
3164 unixtodos_filename (temp
);
3168 info
= GetCachedVolumeInformation (rootname
);
3171 /* Set global referenced by other functions. */
3172 volume_info
= *info
;
3178 /* Determine if volume is FAT format (ie. only supports short 8.3
3179 names); also set path pointer to start of pathname in name, if
3180 pPath is non-NULL. */
3182 is_fat_volume (const char * name
, const char ** pPath
)
3184 if (get_volume_info (name
, pPath
))
3185 return (volume_info
.maxcomp
== 12);
3189 /* Convert all slashes in a filename to backslashes, and map filename
3190 to a valid 8.3 name if necessary. The result is a pointer to a
3191 static buffer, so CAVEAT EMPTOR! */
3193 map_w32_filename (const char * name
, const char ** pPath
)
3195 static char shortname
[MAX_UTF8_PATH
];
3196 char * str
= shortname
;
3199 const char * save_name
= name
;
3201 if (strlen (name
) >= sizeof (shortname
))
3203 /* Return a filename which will cause callers to fail. */
3204 strcpy (shortname
, "?");
3208 if (is_fat_volume (name
, (const char **)&path
)) /* truncate to 8.3 */
3210 register int left
= 8; /* maximum number of chars in part */
3211 register int extn
= 0; /* extension added? */
3212 register int dots
= 2; /* maximum number of dots allowed */
3215 *str
++ = *name
++; /* skip past UNC header */
3217 while ((c
= *name
++))
3224 *str
++ = (c
== ':' ? ':' : '\\');
3225 extn
= 0; /* reset extension flags */
3226 dots
= 2; /* max 2 dots */
3227 left
= 8; /* max length 8 for main part */
3232 /* Convert path components of the form .xxx to _xxx,
3233 but leave . and .. as they are. This allows .emacs
3234 to be read as _emacs, for example. */
3238 IS_DIRECTORY_SEP (*name
))
3253 extn
= 1; /* we've got an extension */
3254 left
= 3; /* 3 chars in extension */
3258 /* any embedded dots after the first are converted to _ */
3263 case '#': /* don't lose these, they're important */
3265 str
[-1] = c
; /* replace last character of part */
3268 if ( left
&& 'A' <= c
&& c
<= 'Z' )
3270 *str
++ = tolower (c
); /* map to lower case (looks nicer) */
3272 dots
= 0; /* started a path component */
3281 strcpy (shortname
, name
);
3282 unixtodos_filename (shortname
);
3286 *pPath
= shortname
+ (path
- save_name
);
3292 is_exec (const char * name
)
3294 char * p
= strrchr (name
, '.');
3297 && (xstrcasecmp (p
, ".exe") == 0 ||
3298 xstrcasecmp (p
, ".com") == 0 ||
3299 xstrcasecmp (p
, ".bat") == 0 ||
3300 xstrcasecmp (p
, ".cmd") == 0));
3303 /* Emulate the Unix directory procedures opendir, closedir, and
3304 readdir. We rename them to sys_* names because some versions of
3305 MinGW startup code call opendir and readdir to glob wildcards, and
3306 the code that calls them doesn't grok UTF-8 encoded file names we
3307 produce in dirent->d_name[]. */
3309 struct dirent dir_static
; /* simulated directory contents */
3310 static HANDLE dir_find_handle
= INVALID_HANDLE_VALUE
;
3311 static int dir_is_fat
;
3312 static char dir_pathname
[MAX_UTF8_PATH
];
3313 static WIN32_FIND_DATAW dir_find_data_w
;
3314 static WIN32_FIND_DATAA dir_find_data_a
;
3315 #define DIR_FIND_DATA_W 1
3316 #define DIR_FIND_DATA_A 2
3317 static int last_dir_find_data
= -1;
3319 /* Support shares on a network resource as subdirectories of a read-only
3321 static HANDLE wnet_enum_handle
= INVALID_HANDLE_VALUE
;
3322 static HANDLE
open_unc_volume (const char *);
3323 static void *read_unc_volume (HANDLE
, wchar_t *, char *, int);
3324 static void close_unc_volume (HANDLE
);
3327 sys_opendir (const char *filename
)
3331 /* Opening is done by FindFirstFile. However, a read is inherent to
3332 this operation, so we defer the open until read time. */
3334 if (dir_find_handle
!= INVALID_HANDLE_VALUE
)
3336 if (wnet_enum_handle
!= INVALID_HANDLE_VALUE
)
3339 /* Note: We don't support traversal of UNC volumes via symlinks.
3340 Doing so would mean punishing 99.99% of use cases by resolving
3341 all the possible symlinks in FILENAME, recursively. */
3342 if (is_unc_volume (filename
))
3344 wnet_enum_handle
= open_unc_volume (filename
);
3345 if (wnet_enum_handle
== INVALID_HANDLE_VALUE
)
3349 if (!(dirp
= (DIR *) malloc (sizeof (DIR))))
3356 strncpy (dir_pathname
, map_w32_filename (filename
, NULL
), MAX_UTF8_PATH
- 1);
3357 dir_pathname
[MAX_UTF8_PATH
- 1] = '\0';
3358 /* Note: We don't support symlinks to file names on FAT volumes.
3359 Doing so would mean punishing 99.99% of use cases by resolving
3360 all the possible symlinks in FILENAME, recursively. */
3361 dir_is_fat
= is_fat_volume (filename
, NULL
);
3367 sys_closedir (DIR *dirp
)
3369 /* If we have a find-handle open, close it. */
3370 if (dir_find_handle
!= INVALID_HANDLE_VALUE
)
3372 FindClose (dir_find_handle
);
3373 dir_find_handle
= INVALID_HANDLE_VALUE
;
3375 else if (wnet_enum_handle
!= INVALID_HANDLE_VALUE
)
3377 close_unc_volume (wnet_enum_handle
);
3378 wnet_enum_handle
= INVALID_HANDLE_VALUE
;
3380 xfree ((char *) dirp
);
3384 sys_readdir (DIR *dirp
)
3386 int downcase
= !NILP (Vw32_downcase_file_names
);
3388 if (wnet_enum_handle
!= INVALID_HANDLE_VALUE
)
3390 if (!read_unc_volume (wnet_enum_handle
,
3391 dir_find_data_w
.cFileName
,
3392 dir_find_data_a
.cFileName
,
3396 /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */
3397 else if (dir_find_handle
== INVALID_HANDLE_VALUE
)
3399 char filename
[MAX_UTF8_PATH
+ 2];
3402 strcpy (filename
, dir_pathname
);
3403 ln
= strlen (filename
) - 1;
3404 if (!IS_DIRECTORY_SEP (filename
[ln
]))
3405 strcat (filename
, "\\");
3406 strcat (filename
, "*");
3408 /* Note: No need to resolve symlinks in FILENAME, because
3409 FindFirst opens the directory that is the target of a
3411 if (w32_unicode_filenames
)
3413 wchar_t fnw
[MAX_PATH
];
3415 filename_to_utf16 (filename
, fnw
);
3416 dir_find_handle
= FindFirstFileW (fnw
, &dir_find_data_w
);
3422 filename_to_ansi (filename
, fna
);
3423 /* If FILENAME is not representable by the current ANSI
3424 codepage, we don't want FindFirstFileA to interpret the
3425 '?' characters as a wildcard. */
3426 if (_mbspbrk (fna
, "?"))
3427 dir_find_handle
= INVALID_HANDLE_VALUE
;
3429 dir_find_handle
= FindFirstFileA (fna
, &dir_find_data_a
);
3432 if (dir_find_handle
== INVALID_HANDLE_VALUE
)
3435 else if (w32_unicode_filenames
)
3437 if (!FindNextFileW (dir_find_handle
, &dir_find_data_w
))
3442 if (!FindNextFileA (dir_find_handle
, &dir_find_data_a
))
3446 /* Emacs never uses this value, so don't bother making it match
3447 value returned by stat(). */
3448 dir_static
.d_ino
= 1;
3450 if (w32_unicode_filenames
)
3452 if (downcase
|| dir_is_fat
)
3454 wchar_t tem
[MAX_PATH
];
3456 wcscpy (tem
, dir_find_data_w
.cFileName
);
3458 filename_from_utf16 (tem
, dir_static
.d_name
);
3461 filename_from_utf16 (dir_find_data_w
.cFileName
, dir_static
.d_name
);
3462 last_dir_find_data
= DIR_FIND_DATA_W
;
3468 /* If the file name in cFileName[] includes `?' characters, it
3469 means the original file name used characters that cannot be
3470 represented by the current ANSI codepage. To avoid total
3471 lossage, retrieve the short 8+3 alias of the long file
3473 if (_mbspbrk (dir_find_data_a
.cFileName
, "?"))
3475 strcpy (tem
, dir_find_data_a
.cAlternateFileName
);
3476 /* 8+3 aliases are returned in all caps, which could break
3477 various alists that look at filenames' extensions. */
3480 else if (downcase
|| dir_is_fat
)
3481 strcpy (tem
, dir_find_data_a
.cFileName
);
3483 filename_from_ansi (dir_find_data_a
.cFileName
, dir_static
.d_name
);
3484 if (downcase
|| dir_is_fat
)
3487 filename_from_ansi (tem
, dir_static
.d_name
);
3489 last_dir_find_data
= DIR_FIND_DATA_A
;
3492 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3493 dir_static
.d_reclen
= sizeof (struct dirent
) - MAX_UTF8_PATH
+ 3 +
3494 dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3500 open_unc_volume (const char *path
)
3502 const char *fn
= map_w32_filename (path
, NULL
);
3506 if (w32_unicode_filenames
)
3509 wchar_t fnw
[MAX_PATH
];
3511 nrw
.dwScope
= RESOURCE_GLOBALNET
;
3512 nrw
.dwType
= RESOURCETYPE_DISK
;
3513 nrw
.dwDisplayType
= RESOURCEDISPLAYTYPE_SERVER
;
3514 nrw
.dwUsage
= RESOURCEUSAGE_CONTAINER
;
3515 nrw
.lpLocalName
= NULL
;
3516 filename_to_utf16 (fn
, fnw
);
3517 nrw
.lpRemoteName
= fnw
;
3518 nrw
.lpComment
= NULL
;
3519 nrw
.lpProvider
= NULL
;
3521 result
= WNetOpenEnumW (RESOURCE_GLOBALNET
, RESOURCETYPE_DISK
,
3522 RESOURCEUSAGE_CONNECTABLE
, &nrw
, &henum
);
3529 nra
.dwScope
= RESOURCE_GLOBALNET
;
3530 nra
.dwType
= RESOURCETYPE_DISK
;
3531 nra
.dwDisplayType
= RESOURCEDISPLAYTYPE_SERVER
;
3532 nra
.dwUsage
= RESOURCEUSAGE_CONTAINER
;
3533 nra
.lpLocalName
= NULL
;
3534 filename_to_ansi (fn
, fna
);
3535 nra
.lpRemoteName
= fna
;
3536 nra
.lpComment
= NULL
;
3537 nra
.lpProvider
= NULL
;
3539 result
= WNetOpenEnumA (RESOURCE_GLOBALNET
, RESOURCETYPE_DISK
,
3540 RESOURCEUSAGE_CONNECTABLE
, &nra
, &henum
);
3542 if (result
== NO_ERROR
)
3545 return INVALID_HANDLE_VALUE
;
3549 read_unc_volume (HANDLE henum
, wchar_t *fname_w
, char *fname_a
, int size
)
3554 DWORD bufsize
= 512;
3558 if (w32_unicode_filenames
)
3563 buffer
= alloca (bufsize
);
3564 result
= WNetEnumResourceW (henum
, &count
, buffer
, &bufsize
);
3565 if (result
!= NO_ERROR
)
3567 /* WNetEnumResource returns \\resource\share...skip forward to "share". */
3568 ptrw
= ((LPNETRESOURCEW
) buffer
)->lpRemoteName
;
3570 while (*ptrw
&& *ptrw
!= L
'/' && *ptrw
!= L
'\\') ptrw
++;
3572 wcsncpy (fname_w
, ptrw
, size
);
3577 int dbcs_p
= max_filename_mbslen () > 1;
3580 buffer
= alloca (bufsize
);
3581 result
= WNetEnumResourceA (henum
, &count
, buffer
, &bufsize
);
3582 if (result
!= NO_ERROR
)
3584 ptra
= ((LPNETRESOURCEA
) buffer
)->lpRemoteName
;
3587 while (*ptra
&& !IS_DIRECTORY_SEP (*ptra
)) ptra
++;
3590 while (*ptra
&& !IS_DIRECTORY_SEP (*ptra
))
3591 ptra
= CharNextExA (file_name_codepage
, ptra
, 0);
3594 strncpy (fname_a
, ptra
, size
);
3602 close_unc_volume (HANDLE henum
)
3604 if (henum
!= INVALID_HANDLE_VALUE
)
3605 WNetCloseEnum (henum
);
3609 unc_volume_file_attributes (const char *path
)
3614 henum
= open_unc_volume (path
);
3615 if (henum
== INVALID_HANDLE_VALUE
)
3618 attrs
= FILE_ATTRIBUTE_READONLY
| FILE_ATTRIBUTE_DIRECTORY
;
3620 close_unc_volume (henum
);
3625 /* Ensure a network connection is authenticated. */
3627 logon_network_drive (const char *path
)
3629 char share
[MAX_UTF8_PATH
];
3636 if (IS_DIRECTORY_SEP (path
[0]) && IS_DIRECTORY_SEP (path
[1]))
3637 drvtype
= DRIVE_REMOTE
;
3638 else if (path
[0] == '\0' || path
[1] != ':')
3639 drvtype
= GetDriveType (NULL
);
3646 drvtype
= GetDriveType (drive
);
3649 /* Only logon to networked drives. */
3650 if (drvtype
!= DRIVE_REMOTE
)
3654 strncpy (share
, path
, MAX_UTF8_PATH
);
3655 /* Truncate to just server and share name. */
3656 for (p
= share
+ 2; *p
&& p
< share
+ MAX_UTF8_PATH
; p
++)
3658 if (IS_DIRECTORY_SEP (*p
) && ++n_slashes
> 3)
3665 if (w32_unicode_filenames
)
3667 NETRESOURCEW resourcew
;
3668 wchar_t share_w
[MAX_PATH
];
3670 resourcew
.dwScope
= RESOURCE_GLOBALNET
;
3671 resourcew
.dwType
= RESOURCETYPE_DISK
;
3672 resourcew
.dwDisplayType
= RESOURCEDISPLAYTYPE_SHARE
;
3673 resourcew
.dwUsage
= RESOURCEUSAGE_CONTAINER
;
3674 resourcew
.lpLocalName
= NULL
;
3675 filename_to_utf16 (share
, share_w
);
3676 resourcew
.lpRemoteName
= share_w
;
3677 resourcew
.lpProvider
= NULL
;
3679 val
= WNetAddConnection2W (&resourcew
, NULL
, NULL
, CONNECT_INTERACTIVE
);
3683 NETRESOURCEA resourcea
;
3684 char share_a
[MAX_PATH
];
3686 resourcea
.dwScope
= RESOURCE_GLOBALNET
;
3687 resourcea
.dwType
= RESOURCETYPE_DISK
;
3688 resourcea
.dwDisplayType
= RESOURCEDISPLAYTYPE_SHARE
;
3689 resourcea
.dwUsage
= RESOURCEUSAGE_CONTAINER
;
3690 resourcea
.lpLocalName
= NULL
;
3691 filename_to_ansi (share
, share_a
);
3692 resourcea
.lpRemoteName
= share_a
;
3693 resourcea
.lpProvider
= NULL
;
3695 val
= WNetAddConnection2A (&resourcea
, NULL
, NULL
, CONNECT_INTERACTIVE
);
3701 case ERROR_ALREADY_ASSIGNED
:
3703 case ERROR_ACCESS_DENIED
:
3704 case ERROR_LOGON_FAILURE
:
3710 case ERROR_BAD_NET_NAME
:
3711 case ERROR_NO_NET_OR_BAD_PATH
:
3712 case ERROR_NO_NETWORK
:
3713 case ERROR_CANCELLED
:
3720 /* Emulate faccessat(2). */
3722 faccessat (int dirfd
, const char * path
, int mode
, int flags
)
3726 if (dirfd
!= AT_FDCWD
3727 && !(IS_DIRECTORY_SEP (path
[0])
3728 || IS_DEVICE_SEP (path
[1])))
3734 /* MSVCRT implementation of 'access' doesn't recognize D_OK, and its
3735 newer versions blow up when passed D_OK. */
3736 path
= map_w32_filename (path
, NULL
);
3737 /* If the last element of PATH is a symlink, we need to resolve it
3738 to get the attributes of its target file. Note: any symlinks in
3739 PATH elements other than the last one are transparently resolved
3740 by GetFileAttributes below. */
3741 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) != 0
3742 && (flags
& AT_SYMLINK_NOFOLLOW
) == 0)
3743 path
= chase_symlinks (path
);
3745 if (w32_unicode_filenames
)
3747 wchar_t path_w
[MAX_PATH
];
3749 filename_to_utf16 (path
, path_w
);
3750 attributes
= GetFileAttributesW (path_w
);
3754 char path_a
[MAX_PATH
];
3756 filename_to_ansi (path
, path_a
);
3757 attributes
= GetFileAttributesA (path_a
);
3760 if (attributes
== -1)
3762 DWORD w32err
= GetLastError ();
3766 case ERROR_INVALID_NAME
:
3767 case ERROR_BAD_PATHNAME
:
3768 if (is_unc_volume (path
))
3770 attributes
= unc_volume_file_attributes (path
);
3771 if (attributes
== -1)
3779 case ERROR_FILE_NOT_FOUND
:
3780 case ERROR_BAD_NETPATH
:
3789 if ((mode
& X_OK
) != 0
3790 && !(is_exec (path
) || (attributes
& FILE_ATTRIBUTE_DIRECTORY
) != 0))
3795 if ((mode
& W_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_READONLY
) != 0)
3800 if ((mode
& D_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
) == 0)
3808 /* A version of 'access' to be used locally with file names in
3809 locale-specific encoding. Does not resolve symlinks and does not
3810 support file names on FAT12 and FAT16 volumes, but that's OK, since
3811 we only invoke this function for files inside the Emacs source or
3812 installation tree, on directories (so any symlinks should have the
3813 directory bit set), and on short file names such as "C:/.emacs". */
3815 sys_access (const char *fname
, int mode
)
3817 char fname_copy
[MAX_PATH
], *p
;
3820 strcpy (fname_copy
, fname
);
3821 /* Do the equivalent of unixtodos_filename. */
3822 for (p
= fname_copy
; *p
; p
= CharNext (p
))
3826 if ((attributes
= GetFileAttributesA (fname_copy
)) == -1)
3828 DWORD w32err
= GetLastError ();
3832 case ERROR_INVALID_NAME
:
3833 case ERROR_BAD_PATHNAME
:
3834 case ERROR_FILE_NOT_FOUND
:
3835 case ERROR_BAD_NETPATH
:
3844 if ((mode
& X_OK
) != 0
3845 && !(is_exec (fname_copy
)
3846 || (attributes
& FILE_ATTRIBUTE_DIRECTORY
) != 0))
3851 if ((mode
& W_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_READONLY
) != 0)
3856 if ((mode
& D_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
) == 0)
3864 /* Shadow some MSVC runtime functions to map requests for long filenames
3865 to reasonable short names if necessary. This was originally added to
3866 permit running Emacs on NT 3.1 on a FAT partition, which doesn't support
3870 sys_chdir (const char * path
)
3872 path
= map_w32_filename (path
, NULL
);
3873 if (w32_unicode_filenames
)
3875 wchar_t newdir_w
[MAX_PATH
];
3877 if (filename_to_utf16 (path
, newdir_w
) == 0)
3878 return _wchdir (newdir_w
);
3883 char newdir_a
[MAX_PATH
];
3885 if (filename_to_ansi (path
, newdir_a
) == 0)
3886 return _chdir (newdir_a
);
3892 sys_chmod (const char * path
, int mode
)
3894 path
= chase_symlinks (map_w32_filename (path
, NULL
));
3895 if (w32_unicode_filenames
)
3897 wchar_t path_w
[MAX_PATH
];
3899 filename_to_utf16 (path
, path_w
);
3900 return _wchmod (path_w
, mode
);
3904 char path_a
[MAX_PATH
];
3906 filename_to_ansi (path
, path_a
);
3907 return _chmod (path_a
, mode
);
3912 sys_creat (const char * path
, int mode
)
3914 path
= map_w32_filename (path
, NULL
);
3915 if (w32_unicode_filenames
)
3917 wchar_t path_w
[MAX_PATH
];
3919 filename_to_utf16 (path
, path_w
);
3920 return _wcreat (path_w
, mode
);
3924 char path_a
[MAX_PATH
];
3926 filename_to_ansi (path
, path_a
);
3927 return _creat (path_a
, mode
);
3932 sys_fopen (const char * path
, const char * mode
)
3936 const char * mode_save
= mode
;
3938 /* Force all file handles to be non-inheritable. This is necessary to
3939 ensure child processes don't unwittingly inherit handles that might
3940 prevent future file access. */
3944 else if (mode
[0] == 'w' || mode
[0] == 'a')
3945 oflag
= O_WRONLY
| O_CREAT
| O_TRUNC
;
3949 /* Only do simplistic option parsing. */
3953 oflag
&= ~(O_RDONLY
| O_WRONLY
);
3956 else if (mode
[0] == 'b')
3961 else if (mode
[0] == 't')
3968 path
= map_w32_filename (path
, NULL
);
3969 if (w32_unicode_filenames
)
3971 wchar_t path_w
[MAX_PATH
];
3973 filename_to_utf16 (path
, path_w
);
3974 fd
= _wopen (path_w
, oflag
| _O_NOINHERIT
, 0644);
3978 char path_a
[MAX_PATH
];
3980 filename_to_ansi (path
, path_a
);
3981 fd
= _open (path_a
, oflag
| _O_NOINHERIT
, 0644);
3986 return _fdopen (fd
, mode_save
);
3989 /* This only works on NTFS volumes, but is useful to have. */
3991 sys_link (const char * old
, const char * new)
3995 char oldname
[MAX_UTF8_PATH
], newname
[MAX_UTF8_PATH
];
3996 wchar_t oldname_w
[MAX_PATH
];
3997 char oldname_a
[MAX_PATH
];
3999 if (old
== NULL
|| new == NULL
)
4005 strcpy (oldname
, map_w32_filename (old
, NULL
));
4006 strcpy (newname
, map_w32_filename (new, NULL
));
4008 if (w32_unicode_filenames
)
4010 filename_to_utf16 (oldname
, oldname_w
);
4011 fileh
= CreateFileW (oldname_w
, 0, 0, NULL
, OPEN_EXISTING
,
4012 FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
4016 filename_to_ansi (oldname
, oldname_a
);
4017 fileh
= CreateFileA (oldname_a
, 0, 0, NULL
, OPEN_EXISTING
,
4018 FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
4020 if (fileh
!= INVALID_HANDLE_VALUE
)
4024 /* Confusingly, the "alternate" stream name field does not apply
4025 when restoring a hard link, and instead contains the actual
4026 stream data for the link (ie. the name of the link to create).
4027 The WIN32_STREAM_ID structure before the cStreamName field is
4028 the stream header, which is then immediately followed by the
4032 WIN32_STREAM_ID wid
;
4033 WCHAR wbuffer
[MAX_PATH
]; /* extra space for link name */
4036 /* We used to pass MB_PRECOMPOSED as the 2nd arg here, but MSDN
4037 indicates that flag is unsupported for CP_UTF8, and OTOH says
4038 it is the default anyway. */
4039 wlen
= pMultiByteToWideChar (CP_UTF8
, 0, newname
, -1,
4040 data
.wid
.cStreamName
, MAX_PATH
);
4043 LPVOID context
= NULL
;
4046 data
.wid
.dwStreamId
= BACKUP_LINK
;
4047 data
.wid
.dwStreamAttributes
= 0;
4048 data
.wid
.Size
.LowPart
= wlen
* sizeof (WCHAR
);
4049 data
.wid
.Size
.HighPart
= 0;
4050 data
.wid
.dwStreamNameSize
= 0;
4052 if (BackupWrite (fileh
, (LPBYTE
)&data
,
4053 offsetof (WIN32_STREAM_ID
, cStreamName
)
4054 + data
.wid
.Size
.LowPart
,
4055 &wbytes
, FALSE
, FALSE
, &context
)
4056 && BackupWrite (fileh
, NULL
, 0, &wbytes
, TRUE
, FALSE
, &context
))
4063 DWORD err
= GetLastError ();
4068 case ERROR_ACCESS_DENIED
:
4069 /* This is what happens when OLDNAME is a directory,
4070 since Windows doesn't support hard links to
4071 directories. Posix says to set errno to EPERM in
4073 if (w32_unicode_filenames
)
4074 attributes
= GetFileAttributesW (oldname_w
);
4076 attributes
= GetFileAttributesA (oldname_a
);
4077 if (attributes
!= -1
4078 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
) != 0)
4080 else if (attributes
== -1
4081 && is_unc_volume (oldname
)
4082 && unc_volume_file_attributes (oldname
) != -1)
4087 case ERROR_TOO_MANY_LINKS
:
4090 case ERROR_NOT_SAME_DEVICE
:
4100 CloseHandle (fileh
);
4109 sys_mkdir (const char * path
)
4111 path
= map_w32_filename (path
, NULL
);
4113 if (w32_unicode_filenames
)
4115 wchar_t path_w
[MAX_PATH
];
4117 filename_to_utf16 (path
, path_w
);
4118 return _wmkdir (path_w
);
4122 char path_a
[MAX_PATH
];
4124 filename_to_ansi (path
, path_a
);
4125 return _mkdir (path_a
);
4130 sys_open (const char * path
, int oflag
, int mode
)
4132 const char* mpath
= map_w32_filename (path
, NULL
);
4135 if (w32_unicode_filenames
)
4137 wchar_t mpath_w
[MAX_PATH
];
4139 filename_to_utf16 (mpath
, mpath_w
);
4140 /* If possible, try to open file without _O_CREAT, to be able to
4141 write to existing hidden and system files. Force all file
4142 handles to be non-inheritable. */
4143 if ((oflag
& (_O_CREAT
| _O_EXCL
)) != (_O_CREAT
| _O_EXCL
))
4144 res
= _wopen (mpath_w
, (oflag
& ~_O_CREAT
) | _O_NOINHERIT
, mode
);
4146 res
= _wopen (mpath_w
, oflag
| _O_NOINHERIT
, mode
);
4150 char mpath_a
[MAX_PATH
];
4152 filename_to_ansi (mpath
, mpath_a
);
4153 if ((oflag
& (_O_CREAT
| _O_EXCL
)) != (_O_CREAT
| _O_EXCL
))
4154 res
= _open (mpath_a
, (oflag
& ~_O_CREAT
) | _O_NOINHERIT
, mode
);
4156 res
= _open (mpath_a
, oflag
| _O_NOINHERIT
, mode
);
4162 /* Implementation of mkostemp for MS-Windows, to avoid race conditions
4165 Standard algorithm for generating a temporary file name seems to be
4166 use pid or tid with a letter on the front (in place of the 6 X's)
4167 and cycle through the letters to find a unique name. We extend
4168 that to allow any reasonable character as the first of the 6 X's,
4169 so that the number of simultaneously used temporary files will be
4173 mkostemp (char * template, int flags
)
4177 unsigned uid
= GetCurrentThreadId ();
4178 int save_errno
= errno
;
4179 static char first_char
[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#";
4182 if (template == NULL
)
4185 p
= template + strlen (template);
4187 /* replace up to the last 5 X's with uid in decimal */
4188 while (--p
>= template && p
[0] == 'X' && --i
>= 0)
4190 p
[0] = '0' + uid
% 10;
4194 if (i
< 0 && p
[0] == 'X')
4199 p
[0] = first_char
[i
];
4200 if ((fd
= sys_open (template,
4201 flags
| _O_CREAT
| _O_EXCL
| _O_RDWR
,
4202 S_IRUSR
| S_IWUSR
)) >= 0
4210 while (++i
< sizeof (first_char
));
4213 /* Template is badly formed or else we can't generate a unique name. */
4218 fchmod (int fd
, mode_t mode
)
4224 sys_rename_replace (const char *oldname
, const char *newname
, BOOL force
)
4227 char temp
[MAX_UTF8_PATH
], temp_a
[MAX_PATH
];;
4230 bool have_temp_a
= false;
4232 /* MoveFile on Windows 95 doesn't correctly change the short file name
4233 alias in a number of circumstances (it is not easy to predict when
4234 just by looking at oldname and newname, unfortunately). In these
4235 cases, renaming through a temporary name avoids the problem.
4237 A second problem on Windows 95 is that renaming through a temp name when
4238 newname is uppercase fails (the final long name ends up in
4239 lowercase, although the short alias might be uppercase) UNLESS the
4240 long temp name is not 8.3.
4242 So, on Windows 95 we always rename through a temp name, and we make sure
4243 the temp name has a long extension to ensure correct renaming. */
4245 strcpy (temp
, map_w32_filename (oldname
, NULL
));
4247 /* volume_info is set indirectly by map_w32_filename. */
4248 oldname_dev
= volume_info
.serialnum
;
4250 if (os_subtype
== OS_9X
)
4255 char oldname_a
[MAX_PATH
];
4257 oldname
= map_w32_filename (oldname
, NULL
);
4258 filename_to_ansi (oldname
, oldname_a
);
4259 filename_to_ansi (temp
, temp_a
);
4260 if ((o
= strrchr (oldname_a
, '\\')))
4263 o
= (char *) oldname_a
;
4265 if ((p
= strrchr (temp_a
, '\\')))
4272 /* Force temp name to require a manufactured 8.3 alias - this
4273 seems to make the second rename work properly. */
4274 sprintf (p
, "_.%s.%u", o
, i
);
4276 result
= rename (oldname_a
, temp_a
);
4278 /* This loop must surely terminate! */
4279 while (result
< 0 && errno
== EEXIST
);
4285 /* If FORCE, emulate Unix behavior - newname is deleted if it already exists
4286 (at least if it is a file; don't do this for directories).
4288 Since we mustn't do this if we are just changing the case of the
4289 file name (we would end up deleting the file we are trying to
4290 rename!), we let rename detect if the destination file already
4291 exists - that way we avoid the possible pitfalls of trying to
4292 determine ourselves whether two names really refer to the same
4293 file, which is not always possible in the general case. (Consider
4294 all the permutations of shared or subst'd drives, etc.) */
4296 newname
= map_w32_filename (newname
, NULL
);
4298 /* volume_info is set indirectly by map_w32_filename. */
4299 newname_dev
= volume_info
.serialnum
;
4301 if (w32_unicode_filenames
)
4303 wchar_t temp_w
[MAX_PATH
], newname_w
[MAX_PATH
];
4305 filename_to_utf16 (temp
, temp_w
);
4306 filename_to_utf16 (newname
, newname_w
);
4307 result
= _wrename (temp_w
, newname_w
);
4308 if (result
< 0 && force
)
4310 DWORD w32err
= GetLastError ();
4313 && newname_dev
!= oldname_dev
)
4315 /* The implementation of `rename' on Windows does not return
4316 errno = EXDEV when you are moving a directory to a
4317 different storage device (ex. logical disk). It returns
4318 EACCES instead. So here we handle such situations and
4322 if ((attributes
= GetFileAttributesW (temp_w
)) != -1
4323 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
))
4326 else if (errno
== EEXIST
)
4328 if (_wchmod (newname_w
, 0666) != 0)
4330 if (_wunlink (newname_w
) != 0)
4332 result
= _wrename (temp_w
, newname_w
);
4334 else if (w32err
== ERROR_PRIVILEGE_NOT_HELD
4335 && is_symlink (temp
))
4337 /* This is Windows prohibiting the user from creating a
4338 symlink in another place, since that requires
4346 char newname_a
[MAX_PATH
];
4349 filename_to_ansi (temp
, temp_a
);
4350 filename_to_ansi (newname
, newname_a
);
4351 result
= rename (temp_a
, newname_a
);
4352 if (result
< 0 && force
)
4354 DWORD w32err
= GetLastError ();
4357 && newname_dev
!= oldname_dev
)
4361 if ((attributes
= GetFileAttributesA (temp_a
)) != -1
4362 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
))
4365 else if (errno
== EEXIST
)
4367 if (_chmod (newname_a
, 0666) != 0)
4369 if (_unlink (newname_a
) != 0)
4371 result
= rename (temp_a
, newname_a
);
4373 else if (w32err
== ERROR_PRIVILEGE_NOT_HELD
4374 && is_symlink (temp
))
4383 sys_rename (char const *old
, char const *new)
4385 return sys_rename_replace (old
, new, TRUE
);
4389 sys_rmdir (const char * path
)
4391 path
= map_w32_filename (path
, NULL
);
4393 if (w32_unicode_filenames
)
4395 wchar_t path_w
[MAX_PATH
];
4397 filename_to_utf16 (path
, path_w
);
4398 return _wrmdir (path_w
);
4402 char path_a
[MAX_PATH
];
4404 filename_to_ansi (path
, path_a
);
4405 return _rmdir (path_a
);
4410 sys_unlink (const char * path
)
4412 path
= map_w32_filename (path
, NULL
);
4414 if (w32_unicode_filenames
)
4416 wchar_t path_w
[MAX_PATH
];
4418 filename_to_utf16 (path
, path_w
);
4419 /* On Unix, unlink works without write permission. */
4420 _wchmod (path_w
, 0666);
4421 return _wunlink (path_w
);
4425 char path_a
[MAX_PATH
];
4427 filename_to_ansi (path
, path_a
);
4428 _chmod (path_a
, 0666);
4429 return _unlink (path_a
);
4433 static FILETIME utc_base_ft
;
4434 static ULONGLONG utc_base
; /* In 100ns units */
4435 static int init
= 0;
4437 #define FILETIME_TO_U64(result, ft) \
4439 ULARGE_INTEGER uiTemp; \
4440 uiTemp.LowPart = (ft).dwLowDateTime; \
4441 uiTemp.HighPart = (ft).dwHighDateTime; \
4442 result = uiTemp.QuadPart; \
4446 initialize_utc_base (void)
4448 /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */
4457 st
.wMilliseconds
= 0;
4459 SystemTimeToFileTime (&st
, &utc_base_ft
);
4460 FILETIME_TO_U64 (utc_base
, utc_base_ft
);
4464 convert_time (FILETIME ft
)
4470 initialize_utc_base ();
4474 if (CompareFileTime (&ft
, &utc_base_ft
) < 0)
4477 FILETIME_TO_U64 (tmp
, ft
);
4478 return (time_t) ((tmp
- utc_base
) / 10000000L);
4482 convert_from_time_t (time_t time
, FILETIME
* pft
)
4488 initialize_utc_base ();
4492 /* time in 100ns units since 1-Jan-1601 */
4493 tmp
.QuadPart
= (ULONGLONG
) time
* 10000000L + utc_base
;
4494 pft
->dwHighDateTime
= tmp
.HighPart
;
4495 pft
->dwLowDateTime
= tmp
.LowPart
;
4498 static PSECURITY_DESCRIPTOR
4499 get_file_security_desc_by_handle (HANDLE h
)
4501 PSECURITY_DESCRIPTOR psd
= NULL
;
4503 SECURITY_INFORMATION si
= OWNER_SECURITY_INFORMATION
4504 | GROUP_SECURITY_INFORMATION
/* | DACL_SECURITY_INFORMATION */ ;
4506 err
= get_security_info (h
, SE_FILE_OBJECT
, si
,
4507 NULL
, NULL
, NULL
, NULL
, &psd
);
4508 if (err
!= ERROR_SUCCESS
)
4514 static PSECURITY_DESCRIPTOR
4515 get_file_security_desc_by_name (const char *fname
)
4517 PSECURITY_DESCRIPTOR psd
= NULL
;
4519 SECURITY_INFORMATION si
= OWNER_SECURITY_INFORMATION
4520 | GROUP_SECURITY_INFORMATION
/* | DACL_SECURITY_INFORMATION */ ;
4522 if (!get_file_security (fname
, si
, psd
, 0, &sd_len
))
4524 err
= GetLastError ();
4525 if (err
!= ERROR_INSUFFICIENT_BUFFER
)
4529 psd
= xmalloc (sd_len
);
4530 if (!get_file_security (fname
, si
, psd
, sd_len
, &sd_len
))
4542 unsigned n_subauthorities
;
4544 /* Use the last sub-authority value of the RID, the relative
4545 portion of the SID, as user/group ID. */
4546 n_subauthorities
= *get_sid_sub_authority_count (sid
);
4547 if (n_subauthorities
< 1)
4548 return 0; /* the "World" RID */
4549 return *get_sid_sub_authority (sid
, n_subauthorities
- 1);
4552 /* Caching SID and account values for faster lokup. */
4556 struct w32_id
*next
;
4558 unsigned char sid
[FLEXIBLE_ARRAY_MEMBER
];
4561 static struct w32_id
*w32_idlist
;
4564 w32_cached_id (PSID sid
, unsigned *id
, char *name
)
4566 struct w32_id
*tail
, *found
;
4568 for (found
= NULL
, tail
= w32_idlist
; tail
; tail
= tail
->next
)
4570 if (equal_sid ((PSID
)tail
->sid
, sid
))
4579 strcpy (name
, found
->name
);
4587 w32_add_to_cache (PSID sid
, unsigned id
, char *name
)
4590 struct w32_id
*new_entry
;
4592 /* We don't want to leave behind stale cache from when Emacs was
4596 sid_len
= get_length_sid (sid
);
4597 new_entry
= xmalloc (offsetof (struct w32_id
, sid
) + sid_len
);
4600 new_entry
->rid
= id
;
4601 strcpy (new_entry
->name
, name
);
4602 copy_sid (sid_len
, (PSID
)new_entry
->sid
, sid
);
4603 new_entry
->next
= w32_idlist
;
4604 w32_idlist
= new_entry
;
4613 get_name_and_id (PSECURITY_DESCRIPTOR psd
, unsigned *id
, char *nm
, int what
)
4617 SID_NAME_USE ignore
;
4619 DWORD name_len
= sizeof (name
);
4621 DWORD domain_len
= sizeof (domain
);
4626 result
= get_security_descriptor_owner (psd
, &sid
, &dflt
);
4627 else if (what
== GID
)
4628 result
= get_security_descriptor_group (psd
, &sid
, &dflt
);
4632 if (!result
|| !is_valid_sid (sid
))
4634 else if (!w32_cached_id (sid
, id
, nm
))
4636 if (!lookup_account_sid (NULL
, sid
, name
, &name_len
,
4637 domain
, &domain_len
, &ignore
)
4638 || name_len
> UNLEN
+1)
4642 *id
= get_rid (sid
);
4644 w32_add_to_cache (sid
, *id
, name
);
4651 get_file_owner_and_group (PSECURITY_DESCRIPTOR psd
, struct stat
*st
)
4653 int dflt_usr
= 0, dflt_grp
= 0;
4662 if (get_name_and_id (psd
, &st
->st_uid
, st
->st_uname
, UID
))
4664 if (get_name_and_id (psd
, &st
->st_gid
, st
->st_gname
, GID
))
4667 /* Consider files to belong to current user/group, if we cannot get
4668 more accurate information. */
4671 st
->st_uid
= dflt_passwd
.pw_uid
;
4672 strcpy (st
->st_uname
, dflt_passwd
.pw_name
);
4676 st
->st_gid
= dflt_passwd
.pw_gid
;
4677 strcpy (st
->st_gname
, dflt_group
.gr_name
);
4681 /* Return non-zero if NAME is a potentially slow filesystem. */
4683 is_slow_fs (const char *name
)
4688 if (IS_DIRECTORY_SEP (name
[0]) && IS_DIRECTORY_SEP (name
[1]))
4689 devtype
= DRIVE_REMOTE
; /* assume UNC name is remote */
4690 else if (!(strlen (name
) >= 2 && IS_DEVICE_SEP (name
[1])))
4691 devtype
= GetDriveType (NULL
); /* use root of current drive */
4694 /* GetDriveType needs the root directory of the drive. */
4695 strncpy (drive_root
, name
, 2);
4696 drive_root
[2] = '\\';
4697 drive_root
[3] = '\0';
4698 devtype
= GetDriveType (drive_root
);
4700 return !(devtype
== DRIVE_FIXED
|| devtype
== DRIVE_RAMDISK
);
4703 /* If this is non-zero, the caller wants accurate information about
4704 file's owner and group, which could be expensive to get. dired.c
4705 uses this flag when needed for the job at hand. */
4706 int w32_stat_get_owner_group
;
4708 /* MSVC stat function can't cope with UNC names and has other bugs, so
4709 replace it with our own. This also allows us to calculate consistent
4710 inode values and owner/group without hacks in the main Emacs code,
4711 and support file names encoded in UTF-8. */
4714 stat_worker (const char * path
, struct stat
* buf
, int follow_symlinks
)
4716 char *name
, *save_name
, *r
;
4717 WIN32_FIND_DATAW wfd_w
;
4718 WIN32_FIND_DATAA wfd_a
;
4720 unsigned __int64 fake_inode
= 0;
4723 int rootdir
= FALSE
;
4724 PSECURITY_DESCRIPTOR psd
= NULL
;
4725 int is_a_symlink
= 0;
4726 DWORD file_flags
= FILE_FLAG_BACKUP_SEMANTICS
;
4727 DWORD access_rights
= 0;
4728 DWORD fattrs
= 0, serialnum
= 0, fs_high
= 0, fs_low
= 0, nlinks
= 1;
4729 FILETIME ctime
, atime
, wtime
;
4730 wchar_t name_w
[MAX_PATH
];
4731 char name_a
[MAX_PATH
];
4733 if (path
== NULL
|| buf
== NULL
)
4739 save_name
= name
= (char *) map_w32_filename (path
, &path
);
4740 /* Must be valid filename, no wild cards or other invalid
4742 if (strpbrk (name
, "*?|<>\""))
4748 len
= strlen (name
);
4749 /* Allocate 1 extra byte so that we could append a slash to a root
4750 directory, down below. */
4751 name
= strcpy (alloca (len
+ 2), name
);
4753 /* Avoid a somewhat costly call to is_symlink if the filesystem
4754 doesn't support symlinks. */
4755 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) != 0)
4756 is_a_symlink
= is_symlink (name
);
4758 /* Plan A: Open the file and get all the necessary information via
4759 the resulting handle. This solves several issues in one blow:
4761 . retrieves attributes for the target of a symlink, if needed
4762 . gets attributes of root directories and symlinks pointing to
4763 root directories, thus avoiding the need for special-casing
4764 these and detecting them by examining the file-name format
4765 . retrieves more accurate attributes (e.g., non-zero size for
4766 some directories, esp. directories that are junction points)
4767 . correctly resolves "c:/..", "/.." and similar file names
4768 . avoids run-time penalties for 99% of use cases
4770 Plan A is always tried first, unless the user asked not to (but
4771 if the file is a symlink and we need to follow links, we try Plan
4772 A even if the user asked not to).
4774 If Plan A fails, we go to Plan B (below), where various
4775 potentially expensive techniques must be used to handle "special"
4776 files such as UNC volumes etc. */
4777 if (!(NILP (Vw32_get_true_file_attributes
)
4778 || (EQ (Vw32_get_true_file_attributes
, Qlocal
) && is_slow_fs (name
)))
4779 /* Following symlinks requires getting the info by handle. */
4780 || (is_a_symlink
&& follow_symlinks
))
4782 BY_HANDLE_FILE_INFORMATION info
;
4784 if (is_a_symlink
&& !follow_symlinks
)
4785 file_flags
|= FILE_FLAG_OPEN_REPARSE_POINT
;
4786 /* READ_CONTROL access rights are required to get security info
4787 by handle. But if the OS doesn't support security in the
4788 first place, we don't need to try. */
4789 if (is_windows_9x () != TRUE
)
4790 access_rights
|= READ_CONTROL
;
4792 if (w32_unicode_filenames
)
4794 filename_to_utf16 (name
, name_w
);
4795 fh
= CreateFileW (name_w
, access_rights
, 0, NULL
, OPEN_EXISTING
,
4797 /* If CreateFile fails with READ_CONTROL, try again with
4798 zero as access rights. */
4799 if (fh
== INVALID_HANDLE_VALUE
&& access_rights
)
4800 fh
= CreateFileW (name_w
, 0, 0, NULL
, OPEN_EXISTING
,
4805 filename_to_ansi (name
, name_a
);
4806 fh
= CreateFileA (name_a
, access_rights
, 0, NULL
, OPEN_EXISTING
,
4808 if (fh
== INVALID_HANDLE_VALUE
&& access_rights
)
4809 fh
= CreateFileA (name_a
, 0, 0, NULL
, OPEN_EXISTING
,
4812 if (fh
== INVALID_HANDLE_VALUE
)
4813 goto no_true_file_attributes
;
4815 /* This is more accurate in terms of getting the correct number
4816 of links, but is quite slow (it is noticeable when Emacs is
4817 making a list of file name completions). */
4818 if (GetFileInformationByHandle (fh
, &info
))
4820 nlinks
= info
.nNumberOfLinks
;
4821 /* Might as well use file index to fake inode values, but this
4822 is not guaranteed to be unique unless we keep a handle open
4823 all the time (even then there are situations where it is
4824 not unique). Reputedly, there are at most 48 bits of info
4825 (on NTFS, presumably less on FAT). */
4826 fake_inode
= info
.nFileIndexHigh
;
4828 fake_inode
+= info
.nFileIndexLow
;
4829 serialnum
= info
.dwVolumeSerialNumber
;
4830 fs_high
= info
.nFileSizeHigh
;
4831 fs_low
= info
.nFileSizeLow
;
4832 ctime
= info
.ftCreationTime
;
4833 atime
= info
.ftLastAccessTime
;
4834 wtime
= info
.ftLastWriteTime
;
4835 fattrs
= info
.dwFileAttributes
;
4839 /* We don't go to Plan B here, because it's not clear that
4840 it's a good idea. The only known use case where
4841 CreateFile succeeds, but GetFileInformationByHandle fails
4842 (with ERROR_INVALID_FUNCTION) is for character devices
4843 such as NUL, PRN, etc. For these, switching to Plan B is
4844 a net loss, because we lose the character device
4845 attribute returned by GetFileType below (FindFirstFile
4846 doesn't set that bit in the attributes), and the other
4847 fields don't make sense for character devices anyway.
4848 Emacs doesn't really care for non-file entities in the
4849 context of l?stat, so neither do we. */
4851 /* w32err is assigned so one could put a breakpoint here and
4852 examine its value, when GetFileInformationByHandle
4854 DWORD w32err
= GetLastError ();
4858 case ERROR_FILE_NOT_FOUND
: /* can this ever happen? */
4864 /* Test for a symlink before testing for a directory, since
4865 symlinks to directories have the directory bit set, but we
4866 don't want them to appear as directories. */
4867 if (is_a_symlink
&& !follow_symlinks
)
4868 buf
->st_mode
= S_IFLNK
;
4869 else if (fattrs
& FILE_ATTRIBUTE_DIRECTORY
)
4870 buf
->st_mode
= S_IFDIR
;
4873 DWORD ftype
= GetFileType (fh
);
4877 case FILE_TYPE_DISK
:
4878 buf
->st_mode
= S_IFREG
;
4880 case FILE_TYPE_PIPE
:
4881 buf
->st_mode
= S_IFIFO
;
4883 case FILE_TYPE_CHAR
:
4884 case FILE_TYPE_UNKNOWN
:
4886 buf
->st_mode
= S_IFCHR
;
4889 /* We produce the fallback owner and group data, based on the
4890 current user that runs Emacs, in the following cases:
4892 . caller didn't request owner and group info
4893 . this is Windows 9X
4894 . getting security by handle failed, and we need to produce
4895 information for the target of a symlink (this is better
4896 than producing a potentially misleading info about the
4899 If getting security by handle fails, and we don't need to
4900 resolve symlinks, we try getting security by name. */
4901 if (!w32_stat_get_owner_group
|| is_windows_9x () == TRUE
)
4902 get_file_owner_and_group (NULL
, buf
);
4905 psd
= get_file_security_desc_by_handle (fh
);
4908 get_file_owner_and_group (psd
, buf
);
4911 else if (!(is_a_symlink
&& follow_symlinks
))
4913 psd
= get_file_security_desc_by_name (name
);
4914 get_file_owner_and_group (psd
, buf
);
4918 get_file_owner_and_group (NULL
, buf
);
4924 no_true_file_attributes
:
4925 /* Plan B: Either getting a handle on the file failed, or the
4926 caller explicitly asked us to not bother making this
4927 information more accurate.
4929 Implementation note: In Plan B, we never bother to resolve
4930 symlinks, even if we got here because we tried Plan A and
4931 failed. That's because, even if the caller asked for extra
4932 precision by setting Vw32_get_true_file_attributes to t,
4933 resolving symlinks requires acquiring a file handle to the
4934 symlink, which we already know will fail. And if the user
4935 did not ask for extra precision, resolving symlinks will fly
4936 in the face of that request, since the user then wants the
4937 lightweight version of the code. */
4938 rootdir
= (path
>= save_name
+ len
- 1
4939 && (IS_DIRECTORY_SEP (*path
) || *path
== 0));
4941 /* If name is "c:/.." or "/.." then stat "c:/" or "/". */
4942 r
= IS_DEVICE_SEP (name
[1]) ? &name
[2] : name
;
4943 if (IS_DIRECTORY_SEP (r
[0])
4944 && r
[1] == '.' && r
[2] == '.' && r
[3] == '\0')
4947 /* Note: If NAME is a symlink to the root of a UNC volume
4948 (i.e. "\\SERVER"), we will not detect that here, and we will
4949 return data about the symlink as result of FindFirst below.
4950 This is unfortunate, but that marginal use case does not
4951 justify a call to chase_symlinks which would impose a penalty
4952 on all the other use cases. (We get here for symlinks to
4953 roots of UNC volumes because CreateFile above fails for them,
4954 unlike with symlinks to root directories X:\ of drives.) */
4955 if (is_unc_volume (name
))
4957 fattrs
= unc_volume_file_attributes (name
);
4961 ctime
= atime
= wtime
= utc_base_ft
;
4965 /* Make sure root directories end in a slash. */
4966 if (!IS_DIRECTORY_SEP (name
[len
-1]))
4967 strcat (name
, "\\");
4968 if (GetDriveType (name
) < 2)
4974 fattrs
= FILE_ATTRIBUTE_DIRECTORY
;
4975 ctime
= atime
= wtime
= utc_base_ft
;
4981 /* Make sure non-root directories do NOT end in a slash,
4982 otherwise FindFirstFile might fail. */
4983 if (IS_DIRECTORY_SEP (name
[len
-1]))
4986 /* (This is hacky, but helps when doing file completions on
4987 network drives.) Optimize by using information available from
4988 active readdir if possible. */
4989 len
= strlen (dir_pathname
);
4990 if (IS_DIRECTORY_SEP (dir_pathname
[len
-1]))
4992 if (dir_find_handle
!= INVALID_HANDLE_VALUE
4993 && last_dir_find_data
!= -1
4994 && !(is_a_symlink
&& follow_symlinks
)
4995 /* The 2 file-name comparisons below support only ASCII
4996 characters, and will lose (compare not equal) when
4997 the file names include non-ASCII characters that are
4998 the same but for the case. However, doing this
4999 properly involves: (a) converting both file names to
5000 UTF-16, (b) lower-casing both names using CharLowerW,
5001 and (c) comparing the results; this would be quite a
5002 bit slower, whereas Plan B is for users who want
5003 lightweight albeit inaccurate version of 'stat'. */
5004 && c_strncasecmp (save_name
, dir_pathname
, len
) == 0
5005 && IS_DIRECTORY_SEP (name
[len
])
5006 && xstrcasecmp (name
+ len
+ 1, dir_static
.d_name
) == 0)
5008 have_wfd
= last_dir_find_data
;
5009 /* This was the last entry returned by readdir. */
5010 if (last_dir_find_data
== DIR_FIND_DATA_W
)
5011 wfd_w
= dir_find_data_w
;
5013 wfd_a
= dir_find_data_a
;
5017 logon_network_drive (name
);
5019 if (w32_unicode_filenames
)
5021 filename_to_utf16 (name
, name_w
);
5022 fh
= FindFirstFileW (name_w
, &wfd_w
);
5023 have_wfd
= DIR_FIND_DATA_W
;
5027 filename_to_ansi (name
, name_a
);
5028 /* If NAME includes characters not representable by
5029 the current ANSI codepage, filename_to_ansi
5030 usually replaces them with a '?'. We don't want
5031 to let FindFirstFileA interpret those as wildcards,
5032 and "succeed", returning us data from some random
5033 file in the same directory. */
5034 if (_mbspbrk (name_a
, "?"))
5035 fh
= INVALID_HANDLE_VALUE
;
5037 fh
= FindFirstFileA (name_a
, &wfd_a
);
5038 have_wfd
= DIR_FIND_DATA_A
;
5040 if (fh
== INVALID_HANDLE_VALUE
)
5047 /* Note: if NAME is a symlink, the information we get from
5048 FindFirstFile is for the symlink, not its target. */
5049 if (have_wfd
== DIR_FIND_DATA_W
)
5051 fattrs
= wfd_w
.dwFileAttributes
;
5052 ctime
= wfd_w
.ftCreationTime
;
5053 atime
= wfd_w
.ftLastAccessTime
;
5054 wtime
= wfd_w
.ftLastWriteTime
;
5055 fs_high
= wfd_w
.nFileSizeHigh
;
5056 fs_low
= wfd_w
.nFileSizeLow
;
5060 fattrs
= wfd_a
.dwFileAttributes
;
5061 ctime
= wfd_a
.ftCreationTime
;
5062 atime
= wfd_a
.ftLastAccessTime
;
5063 wtime
= wfd_a
.ftLastWriteTime
;
5064 fs_high
= wfd_a
.nFileSizeHigh
;
5065 fs_low
= wfd_a
.nFileSizeLow
;
5069 serialnum
= volume_info
.serialnum
;
5071 if (is_a_symlink
&& !follow_symlinks
)
5072 buf
->st_mode
= S_IFLNK
;
5073 else if (fattrs
& FILE_ATTRIBUTE_DIRECTORY
)
5074 buf
->st_mode
= S_IFDIR
;
5076 buf
->st_mode
= S_IFREG
;
5078 get_file_owner_and_group (NULL
, buf
);
5081 buf
->st_ino
= fake_inode
;
5083 buf
->st_dev
= serialnum
;
5084 buf
->st_rdev
= serialnum
;
5086 buf
->st_size
= fs_high
;
5087 buf
->st_size
<<= 32;
5088 buf
->st_size
+= fs_low
;
5089 buf
->st_nlink
= nlinks
;
5091 /* Convert timestamps to Unix format. */
5092 buf
->st_mtime
= convert_time (wtime
);
5093 buf
->st_atime
= convert_time (atime
);
5094 if (buf
->st_atime
== 0) buf
->st_atime
= buf
->st_mtime
;
5095 buf
->st_ctime
= convert_time (ctime
);
5096 if (buf
->st_ctime
== 0) buf
->st_ctime
= buf
->st_mtime
;
5098 /* determine rwx permissions */
5099 if (is_a_symlink
&& !follow_symlinks
)
5100 permission
= S_IREAD
| S_IWRITE
| S_IEXEC
; /* Posix expectations */
5103 if (fattrs
& FILE_ATTRIBUTE_READONLY
)
5104 permission
= S_IREAD
;
5106 permission
= S_IREAD
| S_IWRITE
;
5108 if (fattrs
& FILE_ATTRIBUTE_DIRECTORY
)
5109 permission
|= S_IEXEC
;
5110 else if (is_exec (name
))
5111 permission
|= S_IEXEC
;
5114 buf
->st_mode
|= permission
| (permission
>> 3) | (permission
>> 6);
5120 stat (const char * path
, struct stat
* buf
)
5122 return stat_worker (path
, buf
, 1);
5126 lstat (const char * path
, struct stat
* buf
)
5128 return stat_worker (path
, buf
, 0);
5132 fstatat (int fd
, char const *name
, struct stat
*st
, int flags
)
5134 /* Rely on a hack: an open directory is modeled as file descriptor 0.
5135 This is good enough for the current usage in Emacs, but is fragile.
5137 FIXME: Add proper support for fdopendir, fstatat, readlinkat.
5138 Gnulib does this and can serve as a model. */
5139 char fullname
[MAX_UTF8_PATH
];
5143 char lastc
= dir_pathname
[strlen (dir_pathname
) - 1];
5145 if (_snprintf (fullname
, sizeof fullname
, "%s%s%s",
5146 dir_pathname
, IS_DIRECTORY_SEP (lastc
) ? "" : "/", name
)
5149 errno
= ENAMETOOLONG
;
5155 return stat_worker (name
, st
, ! (flags
& AT_SYMLINK_NOFOLLOW
));
5158 /* Provide fstat and utime as well as stat for consistent handling of
5161 fstat (int desc
, struct stat
* buf
)
5163 HANDLE fh
= (HANDLE
) _get_osfhandle (desc
);
5164 BY_HANDLE_FILE_INFORMATION info
;
5165 unsigned __int64 fake_inode
;
5168 switch (GetFileType (fh
) & ~FILE_TYPE_REMOTE
)
5170 case FILE_TYPE_DISK
:
5171 buf
->st_mode
= S_IFREG
;
5172 if (!GetFileInformationByHandle (fh
, &info
))
5178 case FILE_TYPE_PIPE
:
5179 buf
->st_mode
= S_IFIFO
;
5181 case FILE_TYPE_CHAR
:
5182 case FILE_TYPE_UNKNOWN
:
5184 buf
->st_mode
= S_IFCHR
;
5186 memset (&info
, 0, sizeof (info
));
5187 info
.dwFileAttributes
= 0;
5188 info
.ftCreationTime
= utc_base_ft
;
5189 info
.ftLastAccessTime
= utc_base_ft
;
5190 info
.ftLastWriteTime
= utc_base_ft
;
5193 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_DIRECTORY
)
5194 buf
->st_mode
= S_IFDIR
;
5196 buf
->st_nlink
= info
.nNumberOfLinks
;
5197 /* Might as well use file index to fake inode values, but this
5198 is not guaranteed to be unique unless we keep a handle open
5199 all the time (even then there are situations where it is
5200 not unique). Reputedly, there are at most 48 bits of info
5201 (on NTFS, presumably less on FAT). */
5202 fake_inode
= info
.nFileIndexHigh
;
5204 fake_inode
+= info
.nFileIndexLow
;
5206 /* MSVC defines _ino_t to be short; other libc's might not. */
5207 if (sizeof (buf
->st_ino
) == 2)
5208 buf
->st_ino
= fake_inode
^ (fake_inode
>> 16);
5210 buf
->st_ino
= fake_inode
;
5212 /* If the caller so requested, get the true file owner and group.
5213 Otherwise, consider the file to belong to the current user. */
5214 if (!w32_stat_get_owner_group
|| is_windows_9x () == TRUE
)
5215 get_file_owner_and_group (NULL
, buf
);
5218 PSECURITY_DESCRIPTOR psd
= NULL
;
5220 psd
= get_file_security_desc_by_handle (fh
);
5223 get_file_owner_and_group (psd
, buf
);
5227 get_file_owner_and_group (NULL
, buf
);
5230 buf
->st_dev
= info
.dwVolumeSerialNumber
;
5231 buf
->st_rdev
= info
.dwVolumeSerialNumber
;
5233 buf
->st_size
= info
.nFileSizeHigh
;
5234 buf
->st_size
<<= 32;
5235 buf
->st_size
+= info
.nFileSizeLow
;
5237 /* Convert timestamps to Unix format. */
5238 buf
->st_mtime
= convert_time (info
.ftLastWriteTime
);
5239 buf
->st_atime
= convert_time (info
.ftLastAccessTime
);
5240 if (buf
->st_atime
== 0) buf
->st_atime
= buf
->st_mtime
;
5241 buf
->st_ctime
= convert_time (info
.ftCreationTime
);
5242 if (buf
->st_ctime
== 0) buf
->st_ctime
= buf
->st_mtime
;
5244 /* determine rwx permissions */
5245 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_READONLY
)
5246 permission
= S_IREAD
;
5248 permission
= S_IREAD
| S_IWRITE
;
5250 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_DIRECTORY
)
5251 permission
|= S_IEXEC
;
5254 #if 0 /* no way of knowing the filename */
5255 char * p
= strrchr (name
, '.');
5257 (xstrcasecmp (p
, ".exe") == 0 ||
5258 xstrcasecmp (p
, ".com") == 0 ||
5259 xstrcasecmp (p
, ".bat") == 0 ||
5260 xstrcasecmp (p
, ".cmd") == 0))
5261 permission
|= S_IEXEC
;
5265 buf
->st_mode
|= permission
| (permission
>> 3) | (permission
>> 6);
5270 /* A version of 'utime' which handles directories as well as
5274 utime (const char *name
, struct utimbuf
*times
)
5276 struct utimbuf deftime
;
5283 deftime
.modtime
= deftime
.actime
= time (NULL
);
5287 if (w32_unicode_filenames
)
5289 wchar_t name_utf16
[MAX_PATH
];
5291 if (filename_to_utf16 (name
, name_utf16
) != 0)
5292 return -1; /* errno set by filename_to_utf16 */
5294 /* Need write access to set times. */
5295 fh
= CreateFileW (name_utf16
, FILE_WRITE_ATTRIBUTES
,
5296 /* If NAME specifies a directory, FILE_SHARE_DELETE
5297 allows other processes to delete files inside it,
5298 while we have the directory open. */
5299 FILE_SHARE_READ
| FILE_SHARE_WRITE
| FILE_SHARE_DELETE
,
5300 0, OPEN_EXISTING
, FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
5304 char name_ansi
[MAX_PATH
];
5306 if (filename_to_ansi (name
, name_ansi
) != 0)
5307 return -1; /* errno set by filename_to_ansi */
5309 fh
= CreateFileA (name_ansi
, FILE_WRITE_ATTRIBUTES
,
5310 FILE_SHARE_READ
| FILE_SHARE_WRITE
| FILE_SHARE_DELETE
,
5311 0, OPEN_EXISTING
, FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
5313 if (fh
!= INVALID_HANDLE_VALUE
)
5315 convert_from_time_t (times
->actime
, &atime
);
5316 convert_from_time_t (times
->modtime
, &mtime
);
5317 if (!SetFileTime (fh
, NULL
, &atime
, &mtime
))
5327 DWORD err
= GetLastError ();
5331 case ERROR_FILE_NOT_FOUND
:
5332 case ERROR_PATH_NOT_FOUND
:
5333 case ERROR_INVALID_DRIVE
:
5334 case ERROR_BAD_NETPATH
:
5335 case ERROR_DEV_NOT_EXIST
:
5336 /* ERROR_INVALID_NAME is the error CreateFile sets when the
5337 file name includes ?s, i.e. translation to ANSI failed. */
5338 case ERROR_INVALID_NAME
:
5341 case ERROR_TOO_MANY_OPEN_FILES
:
5344 case ERROR_ACCESS_DENIED
:
5345 case ERROR_SHARING_VIOLATION
:
5358 sys_umask (int mode
)
5360 static int current_mask
;
5361 int retval
, arg
= 0;
5363 /* The only bit we really support is the write bit. Files are
5364 always readable on MS-Windows, and the execute bit does not exist
5366 /* FIXME: if the GROUP and OTHER bits are reset, we should use ACLs
5367 to prevent access by other users on NTFS. */
5368 if ((mode
& S_IWRITE
) != 0)
5371 retval
= _umask (arg
);
5372 /* Merge into the return value the bits they've set the last time,
5373 which msvcrt.dll ignores and never returns. Emacs insists on its
5374 notion of mask being identical to what we return. */
5375 retval
|= (current_mask
& ~S_IWRITE
);
5376 current_mask
= mode
;
5382 /* Symlink-related functions. */
5383 #ifndef SYMBOLIC_LINK_FLAG_DIRECTORY
5384 #define SYMBOLIC_LINK_FLAG_DIRECTORY 0x1
5388 symlink (char const *filename
, char const *linkname
)
5390 char linkfn
[MAX_UTF8_PATH
], *tgtfn
;
5392 int dir_access
, filename_ends_in_slash
;
5394 /* Diagnostics follows Posix as much as possible. */
5395 if (filename
== NULL
|| linkname
== NULL
)
5405 if (strlen (filename
) > MAX_UTF8_PATH
|| strlen (linkname
) > MAX_UTF8_PATH
)
5407 errno
= ENAMETOOLONG
;
5411 strcpy (linkfn
, map_w32_filename (linkname
, NULL
));
5412 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) == 0)
5418 /* Note: since empty FILENAME was already rejected, we can safely
5419 refer to FILENAME[1]. */
5420 if (!(IS_DIRECTORY_SEP (filename
[0]) || IS_DEVICE_SEP (filename
[1])))
5422 /* Non-absolute FILENAME is understood as being relative to
5423 LINKNAME's directory. We need to prepend that directory to
5424 FILENAME to get correct results from faccessat below, since
5425 otherwise it will interpret FILENAME relative to the
5426 directory where the Emacs process runs. Note that
5427 make-symbolic-link always makes sure LINKNAME is a fully
5428 expanded file name. */
5429 char tem
[MAX_UTF8_PATH
];
5430 char *p
= linkfn
+ strlen (linkfn
);
5432 while (p
> linkfn
&& !IS_ANY_SEP (p
[-1]))
5435 strncpy (tem
, linkfn
, p
- linkfn
);
5436 tem
[p
- linkfn
] = '\0';
5437 strcat (tem
, filename
);
5438 dir_access
= faccessat (AT_FDCWD
, tem
, D_OK
, AT_EACCESS
);
5441 dir_access
= faccessat (AT_FDCWD
, filename
, D_OK
, AT_EACCESS
);
5443 /* Since Windows distinguishes between symlinks to directories and
5444 to files, we provide a kludgy feature: if FILENAME doesn't
5445 exist, but ends in a slash, we create a symlink to directory. If
5446 FILENAME exists and is a directory, we always create a symlink to
5448 filename_ends_in_slash
= IS_DIRECTORY_SEP (filename
[strlen (filename
) - 1]);
5449 if (dir_access
== 0 || filename_ends_in_slash
)
5450 flags
= SYMBOLIC_LINK_FLAG_DIRECTORY
;
5452 tgtfn
= (char *)map_w32_filename (filename
, NULL
);
5453 if (filename_ends_in_slash
)
5454 tgtfn
[strlen (tgtfn
) - 1] = '\0';
5457 if (!create_symbolic_link (linkfn
, tgtfn
, flags
))
5459 /* ENOSYS is set by create_symbolic_link, when it detects that
5460 the OS doesn't support the CreateSymbolicLink API. */
5461 if (errno
!= ENOSYS
)
5463 DWORD w32err
= GetLastError ();
5467 /* ERROR_SUCCESS is sometimes returned when LINKFN and
5468 TGTFN point to the same file name, go figure. */
5470 case ERROR_FILE_EXISTS
:
5473 case ERROR_ACCESS_DENIED
:
5476 case ERROR_FILE_NOT_FOUND
:
5477 case ERROR_PATH_NOT_FOUND
:
5478 case ERROR_BAD_NETPATH
:
5479 case ERROR_INVALID_REPARSE_DATA
:
5482 case ERROR_DIRECTORY
:
5485 case ERROR_PRIVILEGE_NOT_HELD
:
5486 case ERROR_NOT_ALL_ASSIGNED
:
5489 case ERROR_DISK_FULL
:
5502 /* A quick inexpensive test of whether FILENAME identifies a file that
5503 is a symlink. Returns non-zero if it is, zero otherwise. FILENAME
5504 must already be in the normalized form returned by
5507 Note: for repeated operations on many files, it is best to test
5508 whether the underlying volume actually supports symlinks, by
5509 testing the FILE_SUPPORTS_REPARSE_POINTS bit in volume's flags, and
5510 avoid the call to this function if it doesn't. That's because the
5511 call to GetFileAttributes takes a non-negligible time, especially
5512 on non-local or removable filesystems. See stat_worker for an
5513 example of how to do that. */
5515 is_symlink (const char *filename
)
5518 wchar_t filename_w
[MAX_PATH
];
5519 char filename_a
[MAX_PATH
];
5520 WIN32_FIND_DATAW wfdw
;
5521 WIN32_FIND_DATAA wfda
;
5523 int attrs_mean_symlink
;
5525 if (w32_unicode_filenames
)
5527 filename_to_utf16 (filename
, filename_w
);
5528 attrs
= GetFileAttributesW (filename_w
);
5532 filename_to_ansi (filename
, filename_a
);
5533 attrs
= GetFileAttributesA (filename_a
);
5537 DWORD w32err
= GetLastError ();
5541 case ERROR_BAD_NETPATH
: /* network share, can't be a symlink */
5543 case ERROR_ACCESS_DENIED
:
5546 case ERROR_FILE_NOT_FOUND
:
5547 case ERROR_PATH_NOT_FOUND
:
5554 if ((attrs
& FILE_ATTRIBUTE_REPARSE_POINT
) == 0)
5556 logon_network_drive (filename
);
5557 if (w32_unicode_filenames
)
5559 fh
= FindFirstFileW (filename_w
, &wfdw
);
5560 attrs_mean_symlink
=
5561 (wfdw
.dwFileAttributes
& FILE_ATTRIBUTE_REPARSE_POINT
) != 0
5562 && (wfdw
.dwReserved0
& IO_REPARSE_TAG_SYMLINK
) == IO_REPARSE_TAG_SYMLINK
;
5564 else if (_mbspbrk (filename_a
, "?"))
5566 /* filename_to_ansi failed to convert the file name. */
5572 fh
= FindFirstFileA (filename_a
, &wfda
);
5573 attrs_mean_symlink
=
5574 (wfda
.dwFileAttributes
& FILE_ATTRIBUTE_REPARSE_POINT
) != 0
5575 && (wfda
.dwReserved0
& IO_REPARSE_TAG_SYMLINK
) == IO_REPARSE_TAG_SYMLINK
;
5577 if (fh
== INVALID_HANDLE_VALUE
)
5580 return attrs_mean_symlink
;
5583 /* If NAME identifies a symbolic link, copy into BUF the file name of
5584 the symlink's target. Copy at most BUF_SIZE bytes, and do NOT
5585 null-terminate the target name, even if it fits. Return the number
5586 of bytes copied, or -1 if NAME is not a symlink or any error was
5587 encountered while resolving it. The file name copied into BUF is
5588 encoded in the current ANSI codepage. */
5590 readlink (const char *name
, char *buf
, size_t buf_size
)
5593 TOKEN_PRIVILEGES privs
;
5594 int restore_privs
= 0;
5597 char resolved
[MAX_UTF8_PATH
];
5610 path
= map_w32_filename (name
, NULL
);
5612 if (strlen (path
) > MAX_UTF8_PATH
)
5614 errno
= ENAMETOOLONG
;
5619 if (is_windows_9x () == TRUE
5620 || (volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) == 0
5621 || !is_symlink (path
))
5624 errno
= EINVAL
; /* not a symlink */
5628 /* Done with simple tests, now we're in for some _real_ work. */
5629 if (enable_privilege (SE_BACKUP_NAME
, TRUE
, &privs
))
5631 /* Implementation note: From here and onward, don't return early,
5632 since that will fail to restore the original set of privileges of
5633 the calling thread. */
5635 retval
= -1; /* not too optimistic, are we? */
5637 /* Note: In the next call to CreateFile, we use zero as the 2nd
5638 argument because, when the symlink is a hidden/system file,
5639 e.g. 'C:\Users\All Users', GENERIC_READ fails with
5640 ERROR_ACCESS_DENIED. Zero seems to work just fine, both for file
5641 and directory symlinks. */
5642 if (w32_unicode_filenames
)
5644 wchar_t path_w
[MAX_PATH
];
5646 filename_to_utf16 (path
, path_w
);
5647 sh
= CreateFileW (path_w
, 0, 0, NULL
, OPEN_EXISTING
,
5648 FILE_FLAG_OPEN_REPARSE_POINT
5649 | FILE_FLAG_BACKUP_SEMANTICS
,
5654 char path_a
[MAX_PATH
];
5656 filename_to_ansi (path
, path_a
);
5657 sh
= CreateFileA (path_a
, 0, 0, NULL
, OPEN_EXISTING
,
5658 FILE_FLAG_OPEN_REPARSE_POINT
5659 | FILE_FLAG_BACKUP_SEMANTICS
,
5662 if (sh
!= INVALID_HANDLE_VALUE
)
5664 BYTE reparse_buf
[MAXIMUM_REPARSE_DATA_BUFFER_SIZE
];
5665 REPARSE_DATA_BUFFER
*reparse_data
= (REPARSE_DATA_BUFFER
*)&reparse_buf
[0];
5668 if (!DeviceIoControl (sh
, FSCTL_GET_REPARSE_POINT
, NULL
, 0,
5669 reparse_buf
, MAXIMUM_REPARSE_DATA_BUFFER_SIZE
,
5672 else if (reparse_data
->ReparseTag
!= IO_REPARSE_TAG_SYMLINK
)
5676 /* Copy the link target name, in wide characters, from
5677 reparse_data, then convert it to multibyte encoding in
5678 the current locale's codepage. */
5682 reparse_data
->SymbolicLinkReparseBuffer
.PrintNameLength
;
5684 reparse_data
->SymbolicLinkReparseBuffer
.PathBuffer
5685 + reparse_data
->SymbolicLinkReparseBuffer
.PrintNameOffset
/sizeof(WCHAR
);
5686 size_t size_to_copy
= buf_size
;
5688 /* According to MSDN, PrintNameLength does not include the
5689 terminating null character. */
5690 lwname
= alloca ((lwname_len
+ 1) * sizeof(WCHAR
));
5691 memcpy (lwname
, lwname_src
, lwname_len
);
5692 lwname
[lwname_len
/sizeof(WCHAR
)] = 0; /* null-terminate */
5693 filename_from_utf16 (lwname
, resolved
);
5694 dostounix_filename (resolved
);
5695 lname_size
= strlen (resolved
) + 1;
5696 if (lname_size
<= buf_size
)
5697 size_to_copy
= lname_size
;
5698 strncpy (buf
, resolved
, size_to_copy
);
5700 retval
= size_to_copy
;
5706 /* CreateFile failed. */
5707 DWORD w32err2
= GetLastError ();
5711 case ERROR_FILE_NOT_FOUND
:
5712 case ERROR_PATH_NOT_FOUND
:
5715 case ERROR_ACCESS_DENIED
:
5716 case ERROR_TOO_MANY_OPEN_FILES
:
5726 restore_privilege (&privs
);
5734 readlinkat (int fd
, char const *name
, char *buffer
,
5737 /* Rely on a hack: an open directory is modeled as file descriptor 0,
5738 as in fstatat. FIXME: Add proper support for readlinkat. */
5739 char fullname
[MAX_UTF8_PATH
];
5743 if (_snprintf (fullname
, sizeof fullname
, "%s/%s", dir_pathname
, name
)
5746 errno
= ENAMETOOLONG
;
5752 return readlink (name
, buffer
, buffer_size
);
5755 /* If FILE is a symlink, return its target (stored in a static
5756 buffer); otherwise return FILE.
5758 This function repeatedly resolves symlinks in the last component of
5759 a chain of symlink file names, as in foo -> bar -> baz -> ...,
5760 until it arrives at a file whose last component is not a symlink,
5761 or some error occurs. It returns the target of the last
5762 successfully resolved symlink in the chain. If it succeeds to
5763 resolve even a single symlink, the value returned is an absolute
5764 file name with backslashes (result of GetFullPathName). By
5765 contrast, if the original FILE is returned, it is unaltered.
5767 Note: This function can set errno even if it succeeds.
5769 Implementation note: we only resolve the last portion ("basename")
5770 of the argument FILE and of each following file in the chain,
5771 disregarding any possible symlinks in its leading directories.
5772 This is because Windows system calls and library functions
5773 transparently resolve symlinks in leading directories and return
5774 correct information, as long as the basename is not a symlink. */
5776 chase_symlinks (const char *file
)
5778 static char target
[MAX_UTF8_PATH
];
5779 char link
[MAX_UTF8_PATH
];
5780 wchar_t target_w
[MAX_PATH
], link_w
[MAX_PATH
];
5781 char target_a
[MAX_PATH
], link_a
[MAX_PATH
];
5782 ssize_t res
, link_len
;
5785 if (is_windows_9x () == TRUE
|| !is_symlink (file
))
5786 return (char *)file
;
5788 if (w32_unicode_filenames
)
5790 wchar_t file_w
[MAX_PATH
];
5792 filename_to_utf16 (file
, file_w
);
5793 if (GetFullPathNameW (file_w
, MAX_PATH
, link_w
, NULL
) == 0)
5794 return (char *)file
;
5795 filename_from_utf16 (link_w
, link
);
5799 char file_a
[MAX_PATH
];
5801 filename_to_ansi (file
, file_a
);
5802 if (GetFullPathNameA (file_a
, MAX_PATH
, link_a
, NULL
) == 0)
5803 return (char *)file
;
5804 filename_from_ansi (link_a
, link
);
5806 link_len
= strlen (link
);
5811 /* Remove trailing slashes, as we want to resolve the last
5812 non-trivial part of the link name. */
5813 while (link_len
> 3 && IS_DIRECTORY_SEP (link
[link_len
-1]))
5814 link
[link_len
--] = '\0';
5816 res
= readlink (link
, target
, MAX_UTF8_PATH
);
5820 if (!(IS_DEVICE_SEP (target
[1])
5821 || (IS_DIRECTORY_SEP (target
[0]) && IS_DIRECTORY_SEP (target
[1]))))
5823 /* Target is relative. Append it to the directory part of
5824 the symlink, then copy the result back to target. */
5825 char *p
= link
+ link_len
;
5827 while (p
> link
&& !IS_ANY_SEP (p
[-1]))
5830 strcpy (target
, link
);
5832 /* Resolve any "." and ".." to get a fully-qualified file name
5834 if (w32_unicode_filenames
)
5836 filename_to_utf16 (target
, target_w
);
5837 link_len
= GetFullPathNameW (target_w
, MAX_PATH
, link_w
, NULL
);
5839 filename_from_utf16 (link_w
, link
);
5843 filename_to_ansi (target
, target_a
);
5844 link_len
= GetFullPathNameA (target_a
, MAX_PATH
, link_a
, NULL
);
5846 filename_from_ansi (link_a
, link
);
5848 link_len
= strlen (link
);
5850 } while (res
> 0 && link_len
> 0 && ++loop_count
<= 100);
5852 if (loop_count
> 100)
5855 if (target
[0] == '\0') /* not a single call to readlink succeeded */
5856 return (char *)file
;
5861 /* Posix ACL emulation. */
5864 acl_valid (acl_t acl
)
5866 return is_valid_security_descriptor ((PSECURITY_DESCRIPTOR
)acl
) ? 0 : -1;
5870 acl_to_text (acl_t acl
, ssize_t
*size
)
5873 SECURITY_INFORMATION flags
=
5874 OWNER_SECURITY_INFORMATION
|
5875 GROUP_SECURITY_INFORMATION
|
5876 DACL_SECURITY_INFORMATION
;
5877 char *retval
= NULL
;
5883 if (convert_sd_to_sddl ((PSECURITY_DESCRIPTOR
)acl
, SDDL_REVISION_1
, flags
, &str_acl
, &local_size
))
5886 /* We don't want to mix heaps, so we duplicate the string in our
5887 heap and free the one allocated by the API. */
5888 retval
= xstrdup (str_acl
);
5891 LocalFree (str_acl
);
5893 else if (errno
!= ENOTSUP
)
5900 acl_from_text (const char *acl_str
)
5902 PSECURITY_DESCRIPTOR psd
, retval
= NULL
;
5908 if (convert_sddl_to_sd (acl_str
, SDDL_REVISION_1
, &psd
, &sd_size
))
5911 retval
= xmalloc (sd_size
);
5912 memcpy (retval
, psd
, sd_size
);
5915 else if (errno
!= ENOTSUP
)
5922 acl_free (void *ptr
)
5929 acl_get_file (const char *fname
, acl_type_t type
)
5931 PSECURITY_DESCRIPTOR psd
= NULL
;
5932 const char *filename
;
5934 if (type
== ACL_TYPE_ACCESS
)
5937 SECURITY_INFORMATION si
=
5938 OWNER_SECURITY_INFORMATION
|
5939 GROUP_SECURITY_INFORMATION
|
5940 DACL_SECURITY_INFORMATION
;
5943 filename
= map_w32_filename (fname
, NULL
);
5944 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) != 0)
5945 fname
= chase_symlinks (filename
);
5950 if (!get_file_security (fname
, si
, psd
, 0, &sd_len
)
5951 && errno
!= ENOTSUP
)
5953 err
= GetLastError ();
5954 if (err
== ERROR_INSUFFICIENT_BUFFER
)
5956 psd
= xmalloc (sd_len
);
5957 if (!get_file_security (fname
, si
, psd
, sd_len
, &sd_len
))
5964 else if (err
== ERROR_FILE_NOT_FOUND
5965 || err
== ERROR_PATH_NOT_FOUND
5966 /* ERROR_INVALID_NAME is what we get if
5967 w32-unicode-filenames is nil and the file cannot
5968 be encoded in the current ANSI codepage. */
5969 || err
== ERROR_INVALID_NAME
)
5977 else if (type
!= ACL_TYPE_DEFAULT
)
5984 acl_set_file (const char *fname
, acl_type_t type
, acl_t acl
)
5986 TOKEN_PRIVILEGES old1
, old2
;
5988 int st
= 0, retval
= -1;
5989 SECURITY_INFORMATION flags
= 0;
5990 PSID psidOwner
, psidGroup
;
5995 const char *filename
;
5997 if (acl_valid (acl
) != 0
5998 || (type
!= ACL_TYPE_DEFAULT
&& type
!= ACL_TYPE_ACCESS
))
6004 if (type
== ACL_TYPE_DEFAULT
)
6010 filename
= map_w32_filename (fname
, NULL
);
6011 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) != 0)
6012 fname
= chase_symlinks (filename
);
6016 if (get_security_descriptor_owner ((PSECURITY_DESCRIPTOR
)acl
, &psidOwner
,
6019 flags
|= OWNER_SECURITY_INFORMATION
;
6020 if (get_security_descriptor_group ((PSECURITY_DESCRIPTOR
)acl
, &psidGroup
,
6023 flags
|= GROUP_SECURITY_INFORMATION
;
6024 if (get_security_descriptor_dacl ((PSECURITY_DESCRIPTOR
)acl
, &dacl_present
,
6027 flags
|= DACL_SECURITY_INFORMATION
;
6031 /* According to KB-245153, setting the owner will succeed if either:
6032 (1) the caller is the user who will be the new owner, and has the
6033 SE_TAKE_OWNERSHIP privilege, or
6034 (2) the caller has the SE_RESTORE privilege, in which case she can
6035 set any valid user or group as the owner
6037 We request below both SE_TAKE_OWNERSHIP and SE_RESTORE
6038 privileges, and disregard any failures in obtaining them. If
6039 these privileges cannot be obtained, and do not already exist in
6040 the calling thread's security token, this function could fail
6042 if (enable_privilege (SE_TAKE_OWNERSHIP_NAME
, TRUE
, &old1
))
6044 if (enable_privilege (SE_RESTORE_NAME
, TRUE
, &old2
))
6049 /* SetFileSecurity is deprecated by MS, and sometimes fails when
6050 DACL inheritance is involved, but it seems to preserve ownership
6051 better than SetNamedSecurityInfo, which is important e.g., in
6053 if (!set_file_security (fname
, flags
, (PSECURITY_DESCRIPTOR
)acl
))
6055 err
= GetLastError ();
6057 if (errno
!= ENOTSUP
)
6058 err
= set_named_security_info (fname
, SE_FILE_OBJECT
, flags
,
6059 psidOwner
, psidGroup
, pacl
, NULL
);
6062 err
= ERROR_SUCCESS
;
6063 if (err
!= ERROR_SUCCESS
)
6065 if (errno
== ENOTSUP
)
6067 else if (err
== ERROR_INVALID_OWNER
6068 || err
== ERROR_NOT_ALL_ASSIGNED
6069 || err
== ERROR_ACCESS_DENIED
)
6071 /* Maybe the requested ACL and the one the file already has
6072 are identical, in which case we can silently ignore the
6073 failure. (And no, Windows doesn't.) */
6074 acl_t current_acl
= acl_get_file (fname
, ACL_TYPE_ACCESS
);
6079 char *acl_from
= acl_to_text (current_acl
, NULL
);
6080 char *acl_to
= acl_to_text (acl
, NULL
);
6082 if (acl_from
&& acl_to
&& xstrcasecmp (acl_from
, acl_to
) == 0)
6088 acl_free (acl_from
);
6091 acl_free (current_acl
);
6094 else if (err
== ERROR_FILE_NOT_FOUND
6095 || err
== ERROR_PATH_NOT_FOUND
6096 /* ERROR_INVALID_NAME is what we get if
6097 w32-unicode-filenames is nil and the file cannot be
6098 encoded in the current ANSI codepage. */
6099 || err
== ERROR_INVALID_NAME
)
6113 restore_privilege (&old2
);
6114 restore_privilege (&old1
);
6122 /* MS-Windows version of careadlinkat (cf. ../lib/careadlinkat.c). We
6123 have a fixed max size for file names, so we don't need the kind of
6124 alloc/malloc/realloc dance the gnulib version does. We also don't
6125 support FD-relative symlinks. */
6127 careadlinkat (int fd
, char const *filename
,
6128 char *buffer
, size_t buffer_size
,
6129 struct allocator
const *alloc
,
6130 ssize_t (*preadlinkat
) (int, char const *, char *, size_t))
6132 char linkname
[MAX_UTF8_PATH
];
6135 link_size
= preadlinkat (fd
, filename
, linkname
, sizeof(linkname
));
6139 char *retval
= buffer
;
6141 linkname
[link_size
++] = '\0';
6142 if (link_size
> buffer_size
)
6143 retval
= (char *)(alloc
? alloc
->allocate
: xmalloc
) (link_size
);
6145 memcpy (retval
, linkname
, link_size
);
6153 w32_copy_file (const char *from
, const char *to
,
6154 int keep_time
, int preserve_ownership
, int copy_acls
)
6158 wchar_t from_w
[MAX_PATH
], to_w
[MAX_PATH
];
6159 char from_a
[MAX_PATH
], to_a
[MAX_PATH
];
6161 /* We ignore preserve_ownership for now. */
6162 preserve_ownership
= preserve_ownership
;
6166 acl
= acl_get_file (from
, ACL_TYPE_ACCESS
);
6167 if (acl
== NULL
&& acl_errno_valid (errno
))
6170 if (w32_unicode_filenames
)
6172 filename_to_utf16 (from
, from_w
);
6173 filename_to_utf16 (to
, to_w
);
6174 copy_result
= CopyFileW (from_w
, to_w
, FALSE
);
6178 filename_to_ansi (from
, from_a
);
6179 filename_to_ansi (to
, to_a
);
6180 copy_result
= CopyFileA (from_a
, to_a
, FALSE
);
6184 /* CopyFile doesn't set errno when it fails. By far the most
6185 "popular" reason is that the target is read-only. */
6186 DWORD err
= GetLastError ();
6190 case ERROR_FILE_NOT_FOUND
:
6193 case ERROR_ACCESS_DENIED
:
6196 case ERROR_ENCRYPTION_FAILED
:
6208 /* CopyFile retains the timestamp by default. However, see
6209 "Community Additions" for CopyFile: it sounds like that is not
6210 entirely true. Testing on Windows XP confirms that modified time
6211 is copied, but creation and last-access times are not.
6213 else if (!keep_time
)
6215 struct timespec now
;
6218 if (w32_unicode_filenames
)
6220 /* Ensure file is writable while its times are set. */
6221 attributes
= GetFileAttributesW (to_w
);
6222 SetFileAttributesW (to_w
, attributes
& ~FILE_ATTRIBUTE_READONLY
);
6223 now
= current_timespec ();
6224 if (set_file_times (-1, to
, now
, now
))
6226 /* Restore original attributes. */
6227 SetFileAttributesW (to_w
, attributes
);
6232 /* Restore original attributes. */
6233 SetFileAttributesW (to_w
, attributes
);
6237 attributes
= GetFileAttributesA (to_a
);
6238 SetFileAttributesA (to_a
, attributes
& ~FILE_ATTRIBUTE_READONLY
);
6239 now
= current_timespec ();
6240 if (set_file_times (-1, to
, now
, now
))
6242 SetFileAttributesA (to_a
, attributes
);
6247 SetFileAttributesA (to_a
, attributes
);
6253 acl_set_file (to
, ACL_TYPE_ACCESS
, acl
) != 0;
6255 if (fail
&& acl_errno_valid (errno
))
6263 /* Support for browsing other processes and their attributes. See
6264 process.c for the Lisp bindings. */
6266 /* Helper wrapper functions. */
6268 static HANDLE WINAPI
6269 create_toolhelp32_snapshot (DWORD Flags
, DWORD Ignored
)
6271 static CreateToolhelp32Snapshot_Proc s_pfn_Create_Toolhelp32_Snapshot
= NULL
;
6273 if (g_b_init_create_toolhelp32_snapshot
== 0)
6275 g_b_init_create_toolhelp32_snapshot
= 1;
6276 s_pfn_Create_Toolhelp32_Snapshot
= (CreateToolhelp32Snapshot_Proc
)
6277 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6278 "CreateToolhelp32Snapshot");
6280 if (s_pfn_Create_Toolhelp32_Snapshot
== NULL
)
6282 return INVALID_HANDLE_VALUE
;
6284 return (s_pfn_Create_Toolhelp32_Snapshot (Flags
, Ignored
));
6288 process32_first (HANDLE hSnapshot
, LPPROCESSENTRY32 lppe
)
6290 static Process32First_Proc s_pfn_Process32_First
= NULL
;
6292 if (g_b_init_process32_first
== 0)
6294 g_b_init_process32_first
= 1;
6295 s_pfn_Process32_First
= (Process32First_Proc
)
6296 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6299 if (s_pfn_Process32_First
== NULL
)
6303 return (s_pfn_Process32_First (hSnapshot
, lppe
));
6307 process32_next (HANDLE hSnapshot
, LPPROCESSENTRY32 lppe
)
6309 static Process32Next_Proc s_pfn_Process32_Next
= NULL
;
6311 if (g_b_init_process32_next
== 0)
6313 g_b_init_process32_next
= 1;
6314 s_pfn_Process32_Next
= (Process32Next_Proc
)
6315 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6318 if (s_pfn_Process32_Next
== NULL
)
6322 return (s_pfn_Process32_Next (hSnapshot
, lppe
));
6326 open_thread_token (HANDLE ThreadHandle
,
6327 DWORD DesiredAccess
,
6329 PHANDLE TokenHandle
)
6331 static OpenThreadToken_Proc s_pfn_Open_Thread_Token
= NULL
;
6332 HMODULE hm_advapi32
= NULL
;
6333 if (is_windows_9x () == TRUE
)
6335 SetLastError (ERROR_NOT_SUPPORTED
);
6338 if (g_b_init_open_thread_token
== 0)
6340 g_b_init_open_thread_token
= 1;
6341 hm_advapi32
= LoadLibrary ("Advapi32.dll");
6342 s_pfn_Open_Thread_Token
=
6343 (OpenThreadToken_Proc
) GetProcAddress (hm_advapi32
, "OpenThreadToken");
6345 if (s_pfn_Open_Thread_Token
== NULL
)
6347 SetLastError (ERROR_NOT_SUPPORTED
);
6351 s_pfn_Open_Thread_Token (
6360 impersonate_self (SECURITY_IMPERSONATION_LEVEL ImpersonationLevel
)
6362 static ImpersonateSelf_Proc s_pfn_Impersonate_Self
= NULL
;
6363 HMODULE hm_advapi32
= NULL
;
6364 if (is_windows_9x () == TRUE
)
6368 if (g_b_init_impersonate_self
== 0)
6370 g_b_init_impersonate_self
= 1;
6371 hm_advapi32
= LoadLibrary ("Advapi32.dll");
6372 s_pfn_Impersonate_Self
=
6373 (ImpersonateSelf_Proc
) GetProcAddress (hm_advapi32
, "ImpersonateSelf");
6375 if (s_pfn_Impersonate_Self
== NULL
)
6379 return s_pfn_Impersonate_Self (ImpersonationLevel
);
6383 revert_to_self (void)
6385 static RevertToSelf_Proc s_pfn_Revert_To_Self
= NULL
;
6386 HMODULE hm_advapi32
= NULL
;
6387 if (is_windows_9x () == TRUE
)
6391 if (g_b_init_revert_to_self
== 0)
6393 g_b_init_revert_to_self
= 1;
6394 hm_advapi32
= LoadLibrary ("Advapi32.dll");
6395 s_pfn_Revert_To_Self
=
6396 (RevertToSelf_Proc
) GetProcAddress (hm_advapi32
, "RevertToSelf");
6398 if (s_pfn_Revert_To_Self
== NULL
)
6402 return s_pfn_Revert_To_Self ();
6406 get_process_memory_info (HANDLE h_proc
,
6407 PPROCESS_MEMORY_COUNTERS mem_counters
,
6410 static GetProcessMemoryInfo_Proc s_pfn_Get_Process_Memory_Info
= NULL
;
6411 HMODULE hm_psapi
= NULL
;
6412 if (is_windows_9x () == TRUE
)
6416 if (g_b_init_get_process_memory_info
== 0)
6418 g_b_init_get_process_memory_info
= 1;
6419 hm_psapi
= LoadLibrary ("Psapi.dll");
6421 s_pfn_Get_Process_Memory_Info
= (GetProcessMemoryInfo_Proc
)
6422 GetProcAddress (hm_psapi
, "GetProcessMemoryInfo");
6424 if (s_pfn_Get_Process_Memory_Info
== NULL
)
6428 return s_pfn_Get_Process_Memory_Info (h_proc
, mem_counters
, bufsize
);
6432 get_process_working_set_size (HANDLE h_proc
,
6436 static GetProcessWorkingSetSize_Proc
6437 s_pfn_Get_Process_Working_Set_Size
= NULL
;
6439 if (is_windows_9x () == TRUE
)
6443 if (g_b_init_get_process_working_set_size
== 0)
6445 g_b_init_get_process_working_set_size
= 1;
6446 s_pfn_Get_Process_Working_Set_Size
= (GetProcessWorkingSetSize_Proc
)
6447 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6448 "GetProcessWorkingSetSize");
6450 if (s_pfn_Get_Process_Working_Set_Size
== NULL
)
6454 return s_pfn_Get_Process_Working_Set_Size (h_proc
, minrss
, maxrss
);
6458 global_memory_status (MEMORYSTATUS
*buf
)
6460 static GlobalMemoryStatus_Proc s_pfn_Global_Memory_Status
= NULL
;
6462 if (is_windows_9x () == TRUE
)
6466 if (g_b_init_global_memory_status
== 0)
6468 g_b_init_global_memory_status
= 1;
6469 s_pfn_Global_Memory_Status
= (GlobalMemoryStatus_Proc
)
6470 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6471 "GlobalMemoryStatus");
6473 if (s_pfn_Global_Memory_Status
== NULL
)
6477 return s_pfn_Global_Memory_Status (buf
);
6481 global_memory_status_ex (MEMORY_STATUS_EX
*buf
)
6483 static GlobalMemoryStatusEx_Proc s_pfn_Global_Memory_Status_Ex
= NULL
;
6485 if (is_windows_9x () == TRUE
)
6489 if (g_b_init_global_memory_status_ex
== 0)
6491 g_b_init_global_memory_status_ex
= 1;
6492 s_pfn_Global_Memory_Status_Ex
= (GlobalMemoryStatusEx_Proc
)
6493 GetProcAddress (GetModuleHandle ("kernel32.dll"),
6494 "GlobalMemoryStatusEx");
6496 if (s_pfn_Global_Memory_Status_Ex
== NULL
)
6500 return s_pfn_Global_Memory_Status_Ex (buf
);
6504 list_system_processes (void)
6506 struct gcpro gcpro1
;
6507 Lisp_Object proclist
= Qnil
;
6510 h_snapshot
= create_toolhelp32_snapshot (TH32CS_SNAPPROCESS
, 0);
6512 if (h_snapshot
!= INVALID_HANDLE_VALUE
)
6514 PROCESSENTRY32 proc_entry
;
6520 proc_entry
.dwSize
= sizeof (PROCESSENTRY32
);
6521 for (res
= process32_first (h_snapshot
, &proc_entry
); res
;
6522 res
= process32_next (h_snapshot
, &proc_entry
))
6524 proc_id
= proc_entry
.th32ProcessID
;
6525 proclist
= Fcons (make_fixnum_or_float (proc_id
), proclist
);
6528 CloseHandle (h_snapshot
);
6530 proclist
= Fnreverse (proclist
);
6537 enable_privilege (LPCTSTR priv_name
, BOOL enable_p
, TOKEN_PRIVILEGES
*old_priv
)
6539 TOKEN_PRIVILEGES priv
;
6540 DWORD priv_size
= sizeof (priv
);
6541 DWORD opriv_size
= sizeof (*old_priv
);
6542 HANDLE h_token
= NULL
;
6543 HANDLE h_thread
= GetCurrentThread ();
6547 res
= open_thread_token (h_thread
,
6548 TOKEN_QUERY
| TOKEN_ADJUST_PRIVILEGES
,
6550 if (!res
&& GetLastError () == ERROR_NO_TOKEN
)
6552 if (impersonate_self (SecurityImpersonation
))
6553 res
= open_thread_token (h_thread
,
6554 TOKEN_QUERY
| TOKEN_ADJUST_PRIVILEGES
,
6559 priv
.PrivilegeCount
= 1;
6560 priv
.Privileges
[0].Attributes
= enable_p
? SE_PRIVILEGE_ENABLED
: 0;
6561 LookupPrivilegeValue (NULL
, priv_name
, &priv
.Privileges
[0].Luid
);
6562 if (AdjustTokenPrivileges (h_token
, FALSE
, &priv
, priv_size
,
6563 old_priv
, &opriv_size
)
6564 && GetLastError () != ERROR_NOT_ALL_ASSIGNED
)
6568 CloseHandle (h_token
);
6574 restore_privilege (TOKEN_PRIVILEGES
*priv
)
6576 DWORD priv_size
= sizeof (*priv
);
6577 HANDLE h_token
= NULL
;
6580 if (open_thread_token (GetCurrentThread (),
6581 TOKEN_QUERY
| TOKEN_ADJUST_PRIVILEGES
,
6584 if (AdjustTokenPrivileges (h_token
, FALSE
, priv
, priv_size
, NULL
, NULL
)
6585 && GetLastError () != ERROR_NOT_ALL_ASSIGNED
)
6589 CloseHandle (h_token
);
6595 ltime (ULONGLONG time_100ns
)
6597 ULONGLONG time_sec
= time_100ns
/ 10000000;
6598 int subsec
= time_100ns
% 10000000;
6599 return list4i (time_sec
>> 16, time_sec
& 0xffff,
6600 subsec
/ 10, subsec
% 10 * 100000);
6603 #define U64_TO_LISP_TIME(time) ltime (time)
6606 process_times (HANDLE h_proc
, Lisp_Object
*ctime
, Lisp_Object
*etime
,
6607 Lisp_Object
*stime
, Lisp_Object
*utime
, Lisp_Object
*ttime
,
6610 FILETIME ft_creation
, ft_exit
, ft_kernel
, ft_user
, ft_current
;
6611 ULONGLONG tem1
, tem2
, tem3
, tem
;
6614 || !get_process_times_fn
6615 || !(*get_process_times_fn
) (h_proc
, &ft_creation
, &ft_exit
,
6616 &ft_kernel
, &ft_user
))
6619 GetSystemTimeAsFileTime (&ft_current
);
6621 FILETIME_TO_U64 (tem1
, ft_kernel
);
6622 *stime
= U64_TO_LISP_TIME (tem1
);
6624 FILETIME_TO_U64 (tem2
, ft_user
);
6625 *utime
= U64_TO_LISP_TIME (tem2
);
6628 *ttime
= U64_TO_LISP_TIME (tem3
);
6630 FILETIME_TO_U64 (tem
, ft_creation
);
6631 /* Process no 4 (System) returns zero creation time. */
6634 *ctime
= U64_TO_LISP_TIME (tem
);
6638 FILETIME_TO_U64 (tem3
, ft_current
);
6639 tem
= (tem3
- utc_base
) - tem
;
6641 *etime
= U64_TO_LISP_TIME (tem
);
6645 *pcpu
= 100.0 * (tem1
+ tem2
) / tem
;
6656 system_process_attributes (Lisp_Object pid
)
6658 struct gcpro gcpro1
, gcpro2
, gcpro3
;
6659 Lisp_Object attrs
= Qnil
;
6660 Lisp_Object cmd_str
, decoded_cmd
, tem
;
6661 HANDLE h_snapshot
, h_proc
;
6664 char uname
[UNLEN
+1], gname
[GNLEN
+1], domain
[1025];
6665 DWORD ulength
= sizeof (uname
), dlength
= sizeof (domain
), needed
;
6666 DWORD glength
= sizeof (gname
);
6667 HANDLE token
= NULL
;
6668 SID_NAME_USE user_type
;
6669 unsigned char *buf
= NULL
;
6671 TOKEN_USER user_token
;
6672 TOKEN_PRIMARY_GROUP group_token
;
6675 PROCESS_MEMORY_COUNTERS mem
;
6676 PROCESS_MEMORY_COUNTERS_EX mem_ex
;
6677 SIZE_T minrss
, maxrss
;
6679 MEMORY_STATUS_EX memstex
;
6680 double totphys
= 0.0;
6681 Lisp_Object ctime
, stime
, utime
, etime
, ttime
;
6683 BOOL result
= FALSE
;
6685 CHECK_NUMBER_OR_FLOAT (pid
);
6686 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
6688 h_snapshot
= create_toolhelp32_snapshot (TH32CS_SNAPPROCESS
, 0);
6690 GCPRO3 (attrs
, decoded_cmd
, tem
);
6692 if (h_snapshot
!= INVALID_HANDLE_VALUE
)
6697 pe
.dwSize
= sizeof (PROCESSENTRY32
);
6698 for (res
= process32_first (h_snapshot
, &pe
); res
;
6699 res
= process32_next (h_snapshot
, &pe
))
6701 if (proc_id
== pe
.th32ProcessID
)
6704 decoded_cmd
= build_string ("Idle");
6707 /* Decode the command name from locale-specific
6709 cmd_str
= build_unibyte_string (pe
.szExeFile
);
6712 code_convert_string_norecord (cmd_str
,
6713 Vlocale_coding_system
, 0);
6715 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
6716 attrs
= Fcons (Fcons (Qppid
,
6717 make_fixnum_or_float (pe
.th32ParentProcessID
)),
6719 attrs
= Fcons (Fcons (Qpri
, make_number (pe
.pcPriClassBase
)),
6721 attrs
= Fcons (Fcons (Qthcount
,
6722 make_fixnum_or_float (pe
.cntThreads
)),
6729 CloseHandle (h_snapshot
);
6738 h_proc
= OpenProcess (PROCESS_QUERY_INFORMATION
| PROCESS_VM_READ
,
6740 /* If we were denied a handle to the process, try again after
6741 enabling the SeDebugPrivilege in our process. */
6744 TOKEN_PRIVILEGES priv_current
;
6746 if (enable_privilege (SE_DEBUG_NAME
, TRUE
, &priv_current
))
6748 h_proc
= OpenProcess (PROCESS_QUERY_INFORMATION
| PROCESS_VM_READ
,
6750 restore_privilege (&priv_current
);
6756 result
= open_process_token (h_proc
, TOKEN_QUERY
, &token
);
6759 result
= get_token_information (token
, TokenUser
, NULL
, 0, &blen
);
6760 if (!result
&& GetLastError () == ERROR_INSUFFICIENT_BUFFER
)
6762 buf
= xmalloc (blen
);
6763 result
= get_token_information (token
, TokenUser
,
6764 (LPVOID
)buf
, blen
, &needed
);
6767 memcpy (&user_token
, buf
, sizeof (user_token
));
6768 if (!w32_cached_id (user_token
.User
.Sid
, &euid
, uname
))
6770 euid
= get_rid (user_token
.User
.Sid
);
6771 result
= lookup_account_sid (NULL
, user_token
.User
.Sid
,
6776 w32_add_to_cache (user_token
.User
.Sid
, euid
, uname
);
6779 strcpy (uname
, "unknown");
6783 ulength
= strlen (uname
);
6789 /* Determine a reasonable euid and gid values. */
6790 if (xstrcasecmp ("administrator", uname
) == 0)
6792 euid
= 500; /* well-known Administrator uid */
6793 egid
= 513; /* well-known None gid */
6797 /* Get group id and name. */
6798 result
= get_token_information (token
, TokenPrimaryGroup
,
6799 (LPVOID
)buf
, blen
, &needed
);
6800 if (!result
&& GetLastError () == ERROR_INSUFFICIENT_BUFFER
)
6802 buf
= xrealloc (buf
, blen
= needed
);
6803 result
= get_token_information (token
, TokenPrimaryGroup
,
6804 (LPVOID
)buf
, blen
, &needed
);
6808 memcpy (&group_token
, buf
, sizeof (group_token
));
6809 if (!w32_cached_id (group_token
.PrimaryGroup
, &egid
, gname
))
6811 egid
= get_rid (group_token
.PrimaryGroup
);
6812 dlength
= sizeof (domain
);
6814 lookup_account_sid (NULL
, group_token
.PrimaryGroup
,
6815 gname
, &glength
, NULL
, &dlength
,
6818 w32_add_to_cache (group_token
.PrimaryGroup
,
6822 strcpy (gname
, "None");
6826 glength
= strlen (gname
);
6834 if (!is_windows_9x ())
6836 /* We couldn't open the process token, presumably because of
6837 insufficient access rights. Assume this process is run
6839 strcpy (uname
, "SYSTEM");
6840 strcpy (gname
, "None");
6841 euid
= 18; /* SYSTEM */
6842 egid
= 513; /* None */
6843 glength
= strlen (gname
);
6844 ulength
= strlen (uname
);
6846 /* If we are running under Windows 9X, where security calls are
6847 not supported, we assume all processes are run by the current
6849 else if (GetUserName (uname
, &ulength
))
6851 if (xstrcasecmp ("administrator", uname
) == 0)
6856 strcpy (gname
, "None");
6857 glength
= strlen (gname
);
6858 ulength
= strlen (uname
);
6864 strcpy (uname
, "administrator");
6865 ulength
= strlen (uname
);
6866 strcpy (gname
, "None");
6867 glength
= strlen (gname
);
6870 CloseHandle (token
);
6873 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (euid
)), attrs
);
6874 tem
= make_unibyte_string (uname
, ulength
);
6875 attrs
= Fcons (Fcons (Quser
,
6876 code_convert_string_norecord (tem
, Vlocale_coding_system
, 0)),
6878 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (egid
)), attrs
);
6879 tem
= make_unibyte_string (gname
, glength
);
6880 attrs
= Fcons (Fcons (Qgroup
,
6881 code_convert_string_norecord (tem
, Vlocale_coding_system
, 0)),
6884 if (global_memory_status_ex (&memstex
))
6885 #if __GNUC__ || (defined (_MSC_VER) && _MSC_VER >= 1300)
6886 totphys
= memstex
.ullTotalPhys
/ 1024.0;
6888 /* Visual Studio 6 cannot convert an unsigned __int64 type to
6889 double, so we need to do this for it... */
6891 DWORD tot_hi
= memstex
.ullTotalPhys
>> 32;
6892 DWORD tot_md
= (memstex
.ullTotalPhys
& 0x00000000ffffffff) >> 10;
6893 DWORD tot_lo
= memstex
.ullTotalPhys
% 1024;
6895 totphys
= tot_hi
* 4194304.0 + tot_md
+ tot_lo
/ 1024.0;
6897 #endif /* __GNUC__ || _MSC_VER >= 1300 */
6898 else if (global_memory_status (&memst
))
6899 totphys
= memst
.dwTotalPhys
/ 1024.0;
6902 && get_process_memory_info (h_proc
, (PROCESS_MEMORY_COUNTERS
*)&mem_ex
,
6905 SIZE_T rss
= mem_ex
.WorkingSetSize
/ 1024;
6907 attrs
= Fcons (Fcons (Qmajflt
,
6908 make_fixnum_or_float (mem_ex
.PageFaultCount
)),
6910 attrs
= Fcons (Fcons (Qvsize
,
6911 make_fixnum_or_float (mem_ex
.PrivateUsage
/ 1024)),
6913 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (rss
)), attrs
);
6915 attrs
= Fcons (Fcons (Qpmem
, make_float (100. * rss
/ totphys
)), attrs
);
6918 && get_process_memory_info (h_proc
, &mem
, sizeof (mem
)))
6920 SIZE_T rss
= mem_ex
.WorkingSetSize
/ 1024;
6922 attrs
= Fcons (Fcons (Qmajflt
,
6923 make_fixnum_or_float (mem
.PageFaultCount
)),
6925 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (rss
)), attrs
);
6927 attrs
= Fcons (Fcons (Qpmem
, make_float (100. * rss
/ totphys
)), attrs
);
6930 && get_process_working_set_size (h_proc
, &minrss
, &maxrss
))
6932 DWORD rss
= maxrss
/ 1024;
6934 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (maxrss
/ 1024)), attrs
);
6936 attrs
= Fcons (Fcons (Qpmem
, make_float (100. * rss
/ totphys
)), attrs
);
6939 if (process_times (h_proc
, &ctime
, &etime
, &stime
, &utime
, &ttime
, &pcpu
))
6941 attrs
= Fcons (Fcons (Qutime
, utime
), attrs
);
6942 attrs
= Fcons (Fcons (Qstime
, stime
), attrs
);
6943 attrs
= Fcons (Fcons (Qtime
, ttime
), attrs
);
6944 attrs
= Fcons (Fcons (Qstart
, ctime
), attrs
);
6945 attrs
= Fcons (Fcons (Qetime
, etime
), attrs
);
6946 attrs
= Fcons (Fcons (Qpcpu
, make_float (pcpu
)), attrs
);
6949 /* FIXME: Retrieve command line by walking the PEB of the process. */
6952 CloseHandle (h_proc
);
6958 /* Wrappers for winsock functions to map between our file descriptors
6959 and winsock's handles; also set h_errno for convenience.
6961 To allow Emacs to run on systems which don't have winsock support
6962 installed, we dynamically link to winsock on startup if present, and
6963 otherwise provide the minimum necessary functionality
6964 (eg. gethostname). */
6966 /* function pointers for relevant socket functions */
6967 int (PASCAL
*pfn_WSAStartup
) (WORD wVersionRequired
, LPWSADATA lpWSAData
);
6968 void (PASCAL
*pfn_WSASetLastError
) (int iError
);
6969 int (PASCAL
*pfn_WSAGetLastError
) (void);
6970 int (PASCAL
*pfn_WSAEventSelect
) (SOCKET s
, HANDLE hEventObject
, long lNetworkEvents
);
6971 HANDLE (PASCAL
*pfn_WSACreateEvent
) (void);
6972 int (PASCAL
*pfn_WSACloseEvent
) (HANDLE hEvent
);
6973 int (PASCAL
*pfn_socket
) (int af
, int type
, int protocol
);
6974 int (PASCAL
*pfn_bind
) (SOCKET s
, const struct sockaddr
*addr
, int namelen
);
6975 int (PASCAL
*pfn_connect
) (SOCKET s
, const struct sockaddr
*addr
, int namelen
);
6976 int (PASCAL
*pfn_ioctlsocket
) (SOCKET s
, long cmd
, u_long
*argp
);
6977 int (PASCAL
*pfn_recv
) (SOCKET s
, char * buf
, int len
, int flags
);
6978 int (PASCAL
*pfn_send
) (SOCKET s
, const char * buf
, int len
, int flags
);
6979 int (PASCAL
*pfn_closesocket
) (SOCKET s
);
6980 int (PASCAL
*pfn_shutdown
) (SOCKET s
, int how
);
6981 int (PASCAL
*pfn_WSACleanup
) (void);
6983 u_short (PASCAL
*pfn_htons
) (u_short hostshort
);
6984 u_short (PASCAL
*pfn_ntohs
) (u_short netshort
);
6985 unsigned long (PASCAL
*pfn_inet_addr
) (const char * cp
);
6986 int (PASCAL
*pfn_gethostname
) (char * name
, int namelen
);
6987 struct hostent
* (PASCAL
*pfn_gethostbyname
) (const char * name
);
6988 struct servent
* (PASCAL
*pfn_getservbyname
) (const char * name
, const char * proto
);
6989 int (PASCAL
*pfn_getpeername
) (SOCKET s
, struct sockaddr
*addr
, int * namelen
);
6990 int (PASCAL
*pfn_setsockopt
) (SOCKET s
, int level
, int optname
,
6991 const char * optval
, int optlen
);
6992 int (PASCAL
*pfn_listen
) (SOCKET s
, int backlog
);
6993 int (PASCAL
*pfn_getsockname
) (SOCKET s
, struct sockaddr
* name
,
6995 SOCKET (PASCAL
*pfn_accept
) (SOCKET s
, struct sockaddr
* addr
, int * addrlen
);
6996 int (PASCAL
*pfn_recvfrom
) (SOCKET s
, char * buf
, int len
, int flags
,
6997 struct sockaddr
* from
, int * fromlen
);
6998 int (PASCAL
*pfn_sendto
) (SOCKET s
, const char * buf
, int len
, int flags
,
6999 const struct sockaddr
* to
, int tolen
);
7001 /* SetHandleInformation is only needed to make sockets non-inheritable. */
7002 BOOL (WINAPI
*pfn_SetHandleInformation
) (HANDLE object
, DWORD mask
, DWORD flags
);
7003 #ifndef HANDLE_FLAG_INHERIT
7004 #define HANDLE_FLAG_INHERIT 1
7008 static int winsock_inuse
;
7013 if (winsock_lib
!= NULL
&& winsock_inuse
== 0)
7015 release_listen_threads ();
7016 /* Not sure what would cause WSAENETDOWN, or even if it can happen
7017 after WSAStartup returns successfully, but it seems reasonable
7018 to allow unloading winsock anyway in that case. */
7019 if (pfn_WSACleanup () == 0 ||
7020 pfn_WSAGetLastError () == WSAENETDOWN
)
7022 if (FreeLibrary (winsock_lib
))
7031 init_winsock (int load_now
)
7033 WSADATA winsockData
;
7035 if (winsock_lib
!= NULL
)
7038 pfn_SetHandleInformation
7039 = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"),
7040 "SetHandleInformation");
7042 winsock_lib
= LoadLibrary ("Ws2_32.dll");
7044 if (winsock_lib
!= NULL
)
7046 /* dynamically link to socket functions */
7048 #define LOAD_PROC(fn) \
7049 if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \
7052 LOAD_PROC (WSAStartup
);
7053 LOAD_PROC (WSASetLastError
);
7054 LOAD_PROC (WSAGetLastError
);
7055 LOAD_PROC (WSAEventSelect
);
7056 LOAD_PROC (WSACreateEvent
);
7057 LOAD_PROC (WSACloseEvent
);
7060 LOAD_PROC (connect
);
7061 LOAD_PROC (ioctlsocket
);
7064 LOAD_PROC (closesocket
);
7065 LOAD_PROC (shutdown
);
7068 LOAD_PROC (inet_addr
);
7069 LOAD_PROC (gethostname
);
7070 LOAD_PROC (gethostbyname
);
7071 LOAD_PROC (getservbyname
);
7072 LOAD_PROC (getpeername
);
7073 LOAD_PROC (WSACleanup
);
7074 LOAD_PROC (setsockopt
);
7076 LOAD_PROC (getsockname
);
7078 LOAD_PROC (recvfrom
);
7082 /* specify version 1.1 of winsock */
7083 if (pfn_WSAStartup (0x101, &winsockData
) == 0)
7085 if (winsockData
.wVersion
!= 0x101)
7090 /* Report that winsock exists and is usable, but leave
7091 socket functions disabled. I am assuming that calling
7092 WSAStartup does not require any network interaction,
7093 and in particular does not cause or require a dial-up
7094 connection to be established. */
7097 FreeLibrary (winsock_lib
);
7105 FreeLibrary (winsock_lib
);
7115 /* Function to map winsock error codes to errno codes for those errno
7116 code defined in errno.h (errno values not defined by errno.h are
7117 already in nt/inc/sys/socket.h). */
7124 if (winsock_lib
== NULL
)
7127 wsa_err
= pfn_WSAGetLastError ();
7131 case WSAEACCES
: errno
= EACCES
; break;
7132 case WSAEBADF
: errno
= EBADF
; break;
7133 case WSAEFAULT
: errno
= EFAULT
; break;
7134 case WSAEINTR
: errno
= EINTR
; break;
7135 case WSAEINVAL
: errno
= EINVAL
; break;
7136 case WSAEMFILE
: errno
= EMFILE
; break;
7137 case WSAENAMETOOLONG
: errno
= ENAMETOOLONG
; break;
7138 case WSAENOTEMPTY
: errno
= ENOTEMPTY
; break;
7139 default: errno
= wsa_err
; break;
7147 if (winsock_lib
!= NULL
)
7148 pfn_WSASetLastError (0);
7151 /* Extend strerror to handle the winsock-specific error codes. */
7155 } _wsa_errlist
[] = {
7156 {WSAEINTR
, "Interrupted function call"},
7157 {WSAEBADF
, "Bad file descriptor"},
7158 {WSAEACCES
, "Permission denied"},
7159 {WSAEFAULT
, "Bad address"},
7160 {WSAEINVAL
, "Invalid argument"},
7161 {WSAEMFILE
, "Too many open files"},
7163 {WSAEWOULDBLOCK
, "Resource temporarily unavailable"},
7164 {WSAEINPROGRESS
, "Operation now in progress"},
7165 {WSAEALREADY
, "Operation already in progress"},
7166 {WSAENOTSOCK
, "Socket operation on non-socket"},
7167 {WSAEDESTADDRREQ
, "Destination address required"},
7168 {WSAEMSGSIZE
, "Message too long"},
7169 {WSAEPROTOTYPE
, "Protocol wrong type for socket"},
7170 {WSAENOPROTOOPT
, "Bad protocol option"},
7171 {WSAEPROTONOSUPPORT
, "Protocol not supported"},
7172 {WSAESOCKTNOSUPPORT
, "Socket type not supported"},
7173 {WSAEOPNOTSUPP
, "Operation not supported"},
7174 {WSAEPFNOSUPPORT
, "Protocol family not supported"},
7175 {WSAEAFNOSUPPORT
, "Address family not supported by protocol family"},
7176 {WSAEADDRINUSE
, "Address already in use"},
7177 {WSAEADDRNOTAVAIL
, "Cannot assign requested address"},
7178 {WSAENETDOWN
, "Network is down"},
7179 {WSAENETUNREACH
, "Network is unreachable"},
7180 {WSAENETRESET
, "Network dropped connection on reset"},
7181 {WSAECONNABORTED
, "Software caused connection abort"},
7182 {WSAECONNRESET
, "Connection reset by peer"},
7183 {WSAENOBUFS
, "No buffer space available"},
7184 {WSAEISCONN
, "Socket is already connected"},
7185 {WSAENOTCONN
, "Socket is not connected"},
7186 {WSAESHUTDOWN
, "Cannot send after socket shutdown"},
7187 {WSAETOOMANYREFS
, "Too many references"}, /* not sure */
7188 {WSAETIMEDOUT
, "Connection timed out"},
7189 {WSAECONNREFUSED
, "Connection refused"},
7190 {WSAELOOP
, "Network loop"}, /* not sure */
7191 {WSAENAMETOOLONG
, "Name is too long"},
7192 {WSAEHOSTDOWN
, "Host is down"},
7193 {WSAEHOSTUNREACH
, "No route to host"},
7194 {WSAENOTEMPTY
, "Buffer not empty"}, /* not sure */
7195 {WSAEPROCLIM
, "Too many processes"},
7196 {WSAEUSERS
, "Too many users"}, /* not sure */
7197 {WSAEDQUOT
, "Double quote in host name"}, /* really not sure */
7198 {WSAESTALE
, "Data is stale"}, /* not sure */
7199 {WSAEREMOTE
, "Remote error"}, /* not sure */
7201 {WSASYSNOTREADY
, "Network subsystem is unavailable"},
7202 {WSAVERNOTSUPPORTED
, "WINSOCK.DLL version out of range"},
7203 {WSANOTINITIALISED
, "Winsock not initialized successfully"},
7204 {WSAEDISCON
, "Graceful shutdown in progress"},
7206 {WSAENOMORE
, "No more operations allowed"}, /* not sure */
7207 {WSAECANCELLED
, "Operation cancelled"}, /* not sure */
7208 {WSAEINVALIDPROCTABLE
, "Invalid procedure table from service provider"},
7209 {WSAEINVALIDPROVIDER
, "Invalid service provider version number"},
7210 {WSAEPROVIDERFAILEDINIT
, "Unable to initialize a service provider"},
7211 {WSASYSCALLFAILURE
, "System call failure"},
7212 {WSASERVICE_NOT_FOUND
, "Service not found"}, /* not sure */
7213 {WSATYPE_NOT_FOUND
, "Class type not found"},
7214 {WSA_E_NO_MORE
, "No more resources available"}, /* really not sure */
7215 {WSA_E_CANCELLED
, "Operation already cancelled"}, /* really not sure */
7216 {WSAEREFUSED
, "Operation refused"}, /* not sure */
7219 {WSAHOST_NOT_FOUND
, "Host not found"},
7220 {WSATRY_AGAIN
, "Authoritative host not found during name lookup"},
7221 {WSANO_RECOVERY
, "Non-recoverable error during name lookup"},
7222 {WSANO_DATA
, "Valid name, no data record of requested type"},
7228 sys_strerror (int error_no
)
7231 static char unknown_msg
[40];
7233 if (error_no
>= 0 && error_no
< sys_nerr
)
7234 return sys_errlist
[error_no
];
7236 for (i
= 0; _wsa_errlist
[i
].errnum
>= 0; i
++)
7237 if (_wsa_errlist
[i
].errnum
== error_no
)
7238 return _wsa_errlist
[i
].msg
;
7240 sprintf (unknown_msg
, "Unidentified error: %d", error_no
);
7244 /* [andrewi 3-May-96] I've had conflicting results using both methods,
7245 but I believe the method of keeping the socket handle separate (and
7246 insuring it is not inheritable) is the correct one. */
7248 #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd)
7250 static int socket_to_fd (SOCKET s
);
7253 sys_socket (int af
, int type
, int protocol
)
7257 if (winsock_lib
== NULL
)
7260 return INVALID_SOCKET
;
7265 /* call the real socket function */
7266 s
= pfn_socket (af
, type
, protocol
);
7268 if (s
!= INVALID_SOCKET
)
7269 return socket_to_fd (s
);
7275 /* Convert a SOCKET to a file descriptor. */
7277 socket_to_fd (SOCKET s
)
7282 /* Although under NT 3.5 _open_osfhandle will accept a socket
7283 handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT,
7284 that does not work under NT 3.1. However, we can get the same
7285 effect by using a backdoor function to replace an existing
7286 descriptor handle with the one we want. */
7288 /* allocate a file descriptor (with appropriate flags) */
7289 fd
= _open ("NUL:", _O_RDWR
);
7292 /* Make a non-inheritable copy of the socket handle. Note
7293 that it is possible that sockets aren't actually kernel
7294 handles, which appears to be the case on Windows 9x when
7295 the MS Proxy winsock client is installed. */
7297 /* Apparently there is a bug in NT 3.51 with some service
7298 packs, which prevents using DuplicateHandle to make a
7299 socket handle non-inheritable (causes WSACleanup to
7300 hang). The work-around is to use SetHandleInformation
7301 instead if it is available and implemented. */
7302 if (pfn_SetHandleInformation
)
7304 pfn_SetHandleInformation ((HANDLE
) s
, HANDLE_FLAG_INHERIT
, 0);
7308 HANDLE parent
= GetCurrentProcess ();
7309 HANDLE new_s
= INVALID_HANDLE_VALUE
;
7311 if (DuplicateHandle (parent
,
7317 DUPLICATE_SAME_ACCESS
))
7319 /* It is possible that DuplicateHandle succeeds even
7320 though the socket wasn't really a kernel handle,
7321 because a real handle has the same value. So
7322 test whether the new handle really is a socket. */
7323 long nonblocking
= 0;
7324 if (pfn_ioctlsocket ((SOCKET
) new_s
, FIONBIO
, &nonblocking
) == 0)
7326 pfn_closesocket (s
);
7331 CloseHandle (new_s
);
7336 eassert (fd
< MAXDESC
);
7337 fd_info
[fd
].hnd
= (HANDLE
) s
;
7339 /* set our own internal flags */
7340 fd_info
[fd
].flags
= FILE_SOCKET
| FILE_BINARY
| FILE_READ
| FILE_WRITE
;
7346 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
7348 /* attach child_process to fd_info */
7349 if (fd_info
[ fd
].cp
!= NULL
)
7351 DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd
));
7355 fd_info
[ fd
].cp
= cp
;
7358 winsock_inuse
++; /* count open sockets */
7366 pfn_closesocket (s
);
7372 sys_bind (int s
, const struct sockaddr
* addr
, int namelen
)
7374 if (winsock_lib
== NULL
)
7377 return SOCKET_ERROR
;
7381 if (fd_info
[s
].flags
& FILE_SOCKET
)
7383 int rc
= pfn_bind (SOCK_HANDLE (s
), addr
, namelen
);
7384 if (rc
== SOCKET_ERROR
)
7389 return SOCKET_ERROR
;
7393 sys_connect (int s
, const struct sockaddr
* name
, int namelen
)
7395 if (winsock_lib
== NULL
)
7398 return SOCKET_ERROR
;
7402 if (fd_info
[s
].flags
& FILE_SOCKET
)
7404 int rc
= pfn_connect (SOCK_HANDLE (s
), name
, namelen
);
7405 if (rc
== SOCKET_ERROR
)
7410 return SOCKET_ERROR
;
7414 sys_htons (u_short hostshort
)
7416 return (winsock_lib
!= NULL
) ?
7417 pfn_htons (hostshort
) : hostshort
;
7421 sys_ntohs (u_short netshort
)
7423 return (winsock_lib
!= NULL
) ?
7424 pfn_ntohs (netshort
) : netshort
;
7428 sys_inet_addr (const char * cp
)
7430 return (winsock_lib
!= NULL
) ?
7431 pfn_inet_addr (cp
) : INADDR_NONE
;
7435 sys_gethostname (char * name
, int namelen
)
7437 if (winsock_lib
!= NULL
)
7442 retval
= pfn_gethostname (name
, namelen
);
7443 if (retval
== SOCKET_ERROR
)
7448 if (namelen
> MAX_COMPUTERNAME_LENGTH
)
7449 return !GetComputerName (name
, (DWORD
*)&namelen
);
7452 return SOCKET_ERROR
;
7456 sys_gethostbyname (const char * name
)
7458 struct hostent
* host
;
7459 int h_err
= h_errno
;
7461 if (winsock_lib
== NULL
)
7463 h_errno
= NO_RECOVERY
;
7469 host
= pfn_gethostbyname (name
);
7481 sys_getservbyname (const char * name
, const char * proto
)
7483 struct servent
* serv
;
7485 if (winsock_lib
== NULL
)
7492 serv
= pfn_getservbyname (name
, proto
);
7499 sys_getpeername (int s
, struct sockaddr
*addr
, int * namelen
)
7501 if (winsock_lib
== NULL
)
7504 return SOCKET_ERROR
;
7508 if (fd_info
[s
].flags
& FILE_SOCKET
)
7510 int rc
= pfn_getpeername (SOCK_HANDLE (s
), addr
, namelen
);
7511 if (rc
== SOCKET_ERROR
)
7516 return SOCKET_ERROR
;
7520 sys_shutdown (int s
, int how
)
7522 if (winsock_lib
== NULL
)
7525 return SOCKET_ERROR
;
7529 if (fd_info
[s
].flags
& FILE_SOCKET
)
7531 int rc
= pfn_shutdown (SOCK_HANDLE (s
), how
);
7532 if (rc
== SOCKET_ERROR
)
7537 return SOCKET_ERROR
;
7541 sys_setsockopt (int s
, int level
, int optname
, const void * optval
, int optlen
)
7543 if (winsock_lib
== NULL
)
7546 return SOCKET_ERROR
;
7550 if (fd_info
[s
].flags
& FILE_SOCKET
)
7552 int rc
= pfn_setsockopt (SOCK_HANDLE (s
), level
, optname
,
7553 (const char *)optval
, optlen
);
7554 if (rc
== SOCKET_ERROR
)
7559 return SOCKET_ERROR
;
7563 sys_listen (int s
, int backlog
)
7565 if (winsock_lib
== NULL
)
7568 return SOCKET_ERROR
;
7572 if (fd_info
[s
].flags
& FILE_SOCKET
)
7574 int rc
= pfn_listen (SOCK_HANDLE (s
), backlog
);
7575 if (rc
== SOCKET_ERROR
)
7578 fd_info
[s
].flags
|= FILE_LISTEN
;
7582 return SOCKET_ERROR
;
7586 sys_getsockname (int s
, struct sockaddr
* name
, int * namelen
)
7588 if (winsock_lib
== NULL
)
7591 return SOCKET_ERROR
;
7595 if (fd_info
[s
].flags
& FILE_SOCKET
)
7597 int rc
= pfn_getsockname (SOCK_HANDLE (s
), name
, namelen
);
7598 if (rc
== SOCKET_ERROR
)
7603 return SOCKET_ERROR
;
7607 sys_accept (int s
, struct sockaddr
* addr
, int * addrlen
)
7609 if (winsock_lib
== NULL
)
7616 if (fd_info
[s
].flags
& FILE_LISTEN
)
7618 SOCKET t
= pfn_accept (SOCK_HANDLE (s
), addr
, addrlen
);
7620 if (t
== INVALID_SOCKET
)
7623 fd
= socket_to_fd (t
);
7627 fd_info
[s
].cp
->status
= STATUS_READ_ACKNOWLEDGED
;
7628 ResetEvent (fd_info
[s
].cp
->char_avail
);
7637 sys_recvfrom (int s
, char * buf
, int len
, int flags
,
7638 struct sockaddr
* from
, int * fromlen
)
7640 if (winsock_lib
== NULL
)
7643 return SOCKET_ERROR
;
7647 if (fd_info
[s
].flags
& FILE_SOCKET
)
7649 int rc
= pfn_recvfrom (SOCK_HANDLE (s
), buf
, len
, flags
, from
, fromlen
);
7650 if (rc
== SOCKET_ERROR
)
7655 return SOCKET_ERROR
;
7659 sys_sendto (int s
, const char * buf
, int len
, int flags
,
7660 const struct sockaddr
* to
, int tolen
)
7662 if (winsock_lib
== NULL
)
7665 return SOCKET_ERROR
;
7669 if (fd_info
[s
].flags
& FILE_SOCKET
)
7671 int rc
= pfn_sendto (SOCK_HANDLE (s
), buf
, len
, flags
, to
, tolen
);
7672 if (rc
== SOCKET_ERROR
)
7677 return SOCKET_ERROR
;
7680 /* Windows does not have an fcntl function. Provide an implementation
7681 good enough for Emacs. */
7683 fcntl (int s
, int cmd
, int options
)
7685 /* In the w32 Emacs port, fcntl (fd, F_DUPFD_CLOEXEC, fd1) is always
7686 invoked in a context where fd1 is closed and all descriptors less
7687 than fd1 are open, so sys_dup is an adequate implementation. */
7688 if (cmd
== F_DUPFD_CLOEXEC
)
7691 if (winsock_lib
== NULL
)
7698 if (fd_info
[s
].flags
& FILE_SOCKET
)
7700 if (cmd
== F_SETFL
&& options
== O_NONBLOCK
)
7702 unsigned long nblock
= 1;
7703 int rc
= pfn_ioctlsocket (SOCK_HANDLE (s
), FIONBIO
, &nblock
);
7704 if (rc
== SOCKET_ERROR
)
7706 /* Keep track of the fact that we set this to non-blocking. */
7707 fd_info
[s
].flags
|= FILE_NDELAY
;
7713 return SOCKET_ERROR
;
7717 return SOCKET_ERROR
;
7721 /* Shadow main io functions: we need to handle pipes and sockets more
7722 intelligently, and implement non-blocking mode as well. */
7735 if (fd
< MAXDESC
&& fd_info
[fd
].cp
)
7737 child_process
* cp
= fd_info
[fd
].cp
;
7739 fd_info
[fd
].cp
= NULL
;
7741 if (CHILD_ACTIVE (cp
))
7743 /* if last descriptor to active child_process then cleanup */
7745 for (i
= 0; i
< MAXDESC
; i
++)
7749 if (fd_info
[i
].cp
== cp
)
7754 if (fd_info
[fd
].flags
& FILE_SOCKET
)
7756 if (winsock_lib
== NULL
) emacs_abort ();
7758 pfn_shutdown (SOCK_HANDLE (fd
), 2);
7759 rc
= pfn_closesocket (SOCK_HANDLE (fd
));
7761 winsock_inuse
--; /* count open sockets */
7763 /* If the process handle is NULL, it's either a socket
7764 or serial connection, or a subprocess that was
7765 already reaped by reap_subprocess, but whose
7766 resources were not yet freed, because its output was
7767 not fully read yet by the time it was reaped. (This
7768 usually happens with async subprocesses whose output
7769 is being read by Emacs.) Otherwise, this process was
7770 not reaped yet, so we set its FD to a negative value
7771 to make sure sys_select will eventually get to
7772 calling the SIGCHLD handler for it, which will then
7773 invoke waitpid and reap_subprocess. */
7774 if (cp
->procinfo
.hProcess
== NULL
)
7782 if (fd
>= 0 && fd
< MAXDESC
)
7783 fd_info
[fd
].flags
= 0;
7785 /* Note that sockets do not need special treatment here (at least on
7786 NT and Windows 95 using the standard tcp/ip stacks) - it appears that
7787 closesocket is equivalent to CloseHandle, which is to be expected
7788 because socket handles are fully fledged kernel handles. */
7800 if (new_fd
>= 0 && new_fd
< MAXDESC
)
7802 /* duplicate our internal info as well */
7803 fd_info
[new_fd
] = fd_info
[fd
];
7809 sys_dup2 (int src
, int dst
)
7813 if (dst
< 0 || dst
>= MAXDESC
)
7819 /* make sure we close the destination first if it's a pipe or socket */
7820 if (src
!= dst
&& fd_info
[dst
].flags
!= 0)
7823 rc
= _dup2 (src
, dst
);
7826 /* duplicate our internal info as well */
7827 fd_info
[dst
] = fd_info
[src
];
7833 pipe2 (int * phandles
, int pipe2_flags
)
7838 eassert (pipe2_flags
== O_CLOEXEC
);
7840 /* make pipe handles non-inheritable; when we spawn a child, we
7841 replace the relevant handle with an inheritable one. Also put
7842 pipes into binary mode; we will do text mode translation ourselves
7844 rc
= _pipe (phandles
, 0, _O_NOINHERIT
| _O_BINARY
);
7848 /* Protect against overflow, since Windows can open more handles than
7849 our fd_info array has room for. */
7850 if (phandles
[0] >= MAXDESC
|| phandles
[1] >= MAXDESC
)
7852 _close (phandles
[0]);
7853 _close (phandles
[1]);
7859 flags
= FILE_PIPE
| FILE_READ
| FILE_BINARY
;
7860 fd_info
[phandles
[0]].flags
= flags
;
7862 flags
= FILE_PIPE
| FILE_WRITE
| FILE_BINARY
;
7863 fd_info
[phandles
[1]].flags
= flags
;
7870 /* Function to do blocking read of one byte, needed to implement
7871 select. It is only allowed on communication ports, sockets, or
7874 _sys_read_ahead (int fd
)
7879 if (fd
< 0 || fd
>= MAXDESC
)
7880 return STATUS_READ_ERROR
;
7882 cp
= fd_info
[fd
].cp
;
7884 if (cp
== NULL
|| cp
->fd
!= fd
|| cp
->status
!= STATUS_READ_READY
)
7885 return STATUS_READ_ERROR
;
7887 if ((fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SERIAL
| FILE_SOCKET
)) == 0
7888 || (fd_info
[fd
].flags
& FILE_READ
) == 0)
7890 DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe, serial port, or socket!\n", fd
));
7894 cp
->status
= STATUS_READ_IN_PROGRESS
;
7896 if (fd_info
[fd
].flags
& FILE_PIPE
)
7898 rc
= _read (fd
, &cp
->chr
, sizeof (char));
7900 /* Give subprocess time to buffer some more output for us before
7901 reporting that input is available; we need this because Windows 95
7902 connects DOS programs to pipes by making the pipe appear to be
7903 the normal console stdout - as a result most DOS programs will
7904 write to stdout without buffering, ie. one character at a
7905 time. Even some W32 programs do this - "dir" in a command
7906 shell on NT is very slow if we don't do this. */
7909 int wait
= w32_pipe_read_delay
;
7915 /* Yield remainder of our time slice, effectively giving a
7916 temporary priority boost to the child process. */
7920 else if (fd_info
[fd
].flags
& FILE_SERIAL
)
7922 HANDLE hnd
= fd_info
[fd
].hnd
;
7923 OVERLAPPED
*ovl
= &fd_info
[fd
].cp
->ovl_read
;
7926 /* Configure timeouts for blocking read. */
7927 if (!GetCommTimeouts (hnd
, &ct
))
7929 cp
->status
= STATUS_READ_ERROR
;
7930 return STATUS_READ_ERROR
;
7932 ct
.ReadIntervalTimeout
= 0;
7933 ct
.ReadTotalTimeoutMultiplier
= 0;
7934 ct
.ReadTotalTimeoutConstant
= 0;
7935 if (!SetCommTimeouts (hnd
, &ct
))
7937 cp
->status
= STATUS_READ_ERROR
;
7938 return STATUS_READ_ERROR
;
7941 if (!ReadFile (hnd
, &cp
->chr
, sizeof (char), (DWORD
*) &rc
, ovl
))
7943 if (GetLastError () != ERROR_IO_PENDING
)
7945 cp
->status
= STATUS_READ_ERROR
;
7946 return STATUS_READ_ERROR
;
7948 if (!GetOverlappedResult (hnd
, ovl
, (DWORD
*) &rc
, TRUE
))
7950 cp
->status
= STATUS_READ_ERROR
;
7951 return STATUS_READ_ERROR
;
7955 else if (fd_info
[fd
].flags
& FILE_SOCKET
)
7957 unsigned long nblock
= 0;
7958 /* We always want this to block, so temporarily disable NDELAY. */
7959 if (fd_info
[fd
].flags
& FILE_NDELAY
)
7960 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
7962 rc
= pfn_recv (SOCK_HANDLE (fd
), &cp
->chr
, sizeof (char), 0);
7964 if (fd_info
[fd
].flags
& FILE_NDELAY
)
7967 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
7971 if (rc
== sizeof (char))
7972 cp
->status
= STATUS_READ_SUCCEEDED
;
7974 cp
->status
= STATUS_READ_FAILED
;
7980 _sys_wait_accept (int fd
)
7986 if (fd
< 0 || fd
>= MAXDESC
)
7987 return STATUS_READ_ERROR
;
7989 cp
= fd_info
[fd
].cp
;
7991 if (cp
== NULL
|| cp
->fd
!= fd
|| cp
->status
!= STATUS_READ_READY
)
7992 return STATUS_READ_ERROR
;
7994 cp
->status
= STATUS_READ_FAILED
;
7996 hEv
= pfn_WSACreateEvent ();
7997 rc
= pfn_WSAEventSelect (SOCK_HANDLE (fd
), hEv
, FD_ACCEPT
);
7998 if (rc
!= SOCKET_ERROR
)
8001 rc
= WaitForSingleObject (hEv
, 500);
8003 } while (rc
== WAIT_TIMEOUT
8004 && cp
->status
!= STATUS_READ_ERROR
8006 pfn_WSAEventSelect (SOCK_HANDLE (fd
), NULL
, 0);
8007 if (rc
== WAIT_OBJECT_0
)
8008 cp
->status
= STATUS_READ_SUCCEEDED
;
8010 pfn_WSACloseEvent (hEv
);
8016 sys_read (int fd
, char * buffer
, unsigned int count
)
8021 char * orig_buffer
= buffer
;
8029 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SOCKET
| FILE_SERIAL
))
8031 child_process
*cp
= fd_info
[fd
].cp
;
8033 if ((fd_info
[fd
].flags
& FILE_READ
) == 0)
8041 /* re-read CR carried over from last read */
8042 if (fd_info
[fd
].flags
& FILE_LAST_CR
)
8044 if (fd_info
[fd
].flags
& FILE_BINARY
) emacs_abort ();
8048 fd_info
[fd
].flags
&= ~FILE_LAST_CR
;
8051 /* presence of a child_process structure means we are operating in
8052 non-blocking mode - otherwise we just call _read directly.
8053 Note that the child_process structure might be missing because
8054 reap_subprocess has been called; in this case the pipe is
8055 already broken, so calling _read on it is okay. */
8058 int current_status
= cp
->status
;
8060 switch (current_status
)
8062 case STATUS_READ_FAILED
:
8063 case STATUS_READ_ERROR
:
8064 /* report normal EOF if nothing in buffer */
8066 fd_info
[fd
].flags
|= FILE_AT_EOF
;
8069 case STATUS_READ_READY
:
8070 case STATUS_READ_IN_PROGRESS
:
8071 DebPrint (("sys_read called when read is in progress\n"));
8072 errno
= EWOULDBLOCK
;
8075 case STATUS_READ_SUCCEEDED
:
8076 /* consume read-ahead char */
8077 *buffer
++ = cp
->chr
;
8080 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
8081 ResetEvent (cp
->char_avail
);
8083 case STATUS_READ_ACKNOWLEDGED
:
8087 DebPrint (("sys_read: bad status %d\n", current_status
));
8092 if (fd_info
[fd
].flags
& FILE_PIPE
)
8094 PeekNamedPipe ((HANDLE
) _get_osfhandle (fd
), NULL
, 0, NULL
, &waiting
, NULL
);
8095 to_read
= min (waiting
, (DWORD
) count
);
8098 nchars
+= _read (fd
, buffer
, to_read
);
8100 else if (fd_info
[fd
].flags
& FILE_SERIAL
)
8102 HANDLE hnd
= fd_info
[fd
].hnd
;
8103 OVERLAPPED
*ovl
= &fd_info
[fd
].cp
->ovl_read
;
8109 /* Configure timeouts for non-blocking read. */
8110 if (!GetCommTimeouts (hnd
, &ct
))
8115 ct
.ReadIntervalTimeout
= MAXDWORD
;
8116 ct
.ReadTotalTimeoutMultiplier
= 0;
8117 ct
.ReadTotalTimeoutConstant
= 0;
8118 if (!SetCommTimeouts (hnd
, &ct
))
8124 if (!ResetEvent (ovl
->hEvent
))
8129 if (!ReadFile (hnd
, buffer
, count
, (DWORD
*) &rc
, ovl
))
8131 if (GetLastError () != ERROR_IO_PENDING
)
8136 if (!GetOverlappedResult (hnd
, ovl
, (DWORD
*) &rc
, TRUE
))
8145 else /* FILE_SOCKET */
8147 if (winsock_lib
== NULL
) emacs_abort ();
8149 /* do the equivalent of a non-blocking read */
8150 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONREAD
, &waiting
);
8151 if (waiting
== 0 && nchars
== 0)
8153 errno
= EWOULDBLOCK
;
8159 /* always use binary mode for sockets */
8160 int res
= pfn_recv (SOCK_HANDLE (fd
), buffer
, count
, 0);
8161 if (res
== SOCKET_ERROR
)
8163 DebPrint (("sys_read.recv failed with error %d on socket %ld\n",
8164 pfn_WSAGetLastError (), SOCK_HANDLE (fd
)));
8174 int nread
= _read (fd
, buffer
, count
);
8177 else if (nchars
== 0)
8182 fd_info
[fd
].flags
|= FILE_AT_EOF
;
8183 /* Perform text mode translation if required. */
8184 else if ((fd_info
[fd
].flags
& FILE_BINARY
) == 0)
8186 nchars
= crlf_to_lf (nchars
, orig_buffer
);
8187 /* If buffer contains only CR, return that. To be absolutely
8188 sure we should attempt to read the next char, but in
8189 practice a CR to be followed by LF would not appear by
8190 itself in the buffer. */
8191 if (nchars
> 1 && orig_buffer
[nchars
- 1] == 0x0d)
8193 fd_info
[fd
].flags
|= FILE_LAST_CR
;
8199 nchars
= _read (fd
, buffer
, count
);
8204 /* From w32xfns.c */
8205 extern HANDLE interrupt_handle
;
8207 /* For now, don't bother with a non-blocking mode */
8209 sys_write (int fd
, const void * buffer
, unsigned int count
)
8219 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SOCKET
| FILE_SERIAL
))
8221 if ((fd_info
[fd
].flags
& FILE_WRITE
) == 0)
8227 /* Perform text mode translation if required. */
8228 if ((fd_info
[fd
].flags
& FILE_BINARY
) == 0)
8230 char * tmpbuf
= alloca (count
* 2);
8231 unsigned char * src
= (void *)buffer
;
8232 unsigned char * dst
= tmpbuf
;
8237 unsigned char *next
;
8238 /* copy next line or remaining bytes */
8239 next
= _memccpy (dst
, src
, '\n', nbytes
);
8242 /* copied one line ending with '\n' */
8243 int copied
= next
- dst
;
8246 /* insert '\r' before '\n' */
8253 /* copied remaining partial line -> now finished */
8260 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& FILE_SERIAL
)
8262 HANDLE hnd
= (HANDLE
) _get_osfhandle (fd
);
8263 OVERLAPPED
*ovl
= &fd_info
[fd
].cp
->ovl_write
;
8264 HANDLE wait_hnd
[2] = { interrupt_handle
, ovl
->hEvent
};
8267 if (!WriteFile (hnd
, buffer
, count
, (DWORD
*) &nchars
, ovl
))
8269 if (GetLastError () != ERROR_IO_PENDING
)
8274 if (detect_input_pending ())
8275 active
= MsgWaitForMultipleObjects (2, wait_hnd
, FALSE
, INFINITE
,
8278 active
= WaitForMultipleObjects (2, wait_hnd
, FALSE
, INFINITE
);
8279 if (active
== WAIT_OBJECT_0
)
8280 { /* User pressed C-g, cancel write, then leave. Don't bother
8281 cleaning up as we may only get stuck in buggy drivers. */
8282 PurgeComm (hnd
, PURGE_TXABORT
| PURGE_TXCLEAR
);
8287 if (active
== WAIT_OBJECT_0
+ 1
8288 && !GetOverlappedResult (hnd
, ovl
, (DWORD
*) &nchars
, TRUE
))
8295 else if (fd
< MAXDESC
&& fd_info
[fd
].flags
& FILE_SOCKET
)
8297 unsigned long nblock
= 0;
8298 if (winsock_lib
== NULL
) emacs_abort ();
8300 /* TODO: implement select() properly so non-blocking I/O works. */
8301 /* For now, make sure the write blocks. */
8302 if (fd_info
[fd
].flags
& FILE_NDELAY
)
8303 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
8305 nchars
= pfn_send (SOCK_HANDLE (fd
), buffer
, count
, 0);
8307 /* Set the socket back to non-blocking if it was before,
8308 for other operations that support it. */
8309 if (fd_info
[fd
].flags
& FILE_NDELAY
)
8312 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
8315 if (nchars
== SOCKET_ERROR
)
8317 DebPrint (("sys_write.send failed with error %d on socket %ld\n",
8318 pfn_WSAGetLastError (), SOCK_HANDLE (fd
)));
8324 /* Some networked filesystems don't like too large writes, so
8325 break them into smaller chunks. See the Comments section of
8326 the MSDN documentation of WriteFile for details behind the
8327 choice of the value of CHUNK below. See also the thread
8328 http://thread.gmane.org/gmane.comp.version-control.git/145294
8329 in the git mailing list. */
8330 const unsigned char *p
= buffer
;
8331 const unsigned chunk
= 30 * 1024 * 1024;
8336 unsigned this_chunk
= count
< chunk
? count
: chunk
;
8337 int n
= _write (fd
, p
, this_chunk
);
8345 else if (n
< this_chunk
)
8356 /* Emulation of SIOCGIFCONF and getifaddrs, see process.c. */
8358 extern Lisp_Object
conv_sockaddr_to_lisp (struct sockaddr
*, int);
8360 /* Return information about network interface IFNAME, or about all
8361 interfaces (if IFNAME is nil). */
8363 network_interface_get_info (Lisp_Object ifname
)
8365 ULONG ainfo_len
= sizeof (IP_ADAPTER_INFO
);
8366 IP_ADAPTER_INFO
*adapter
, *ainfo
= xmalloc (ainfo_len
);
8367 DWORD retval
= get_adapters_info (ainfo
, &ainfo_len
);
8368 Lisp_Object res
= Qnil
;
8370 if (retval
== ERROR_BUFFER_OVERFLOW
)
8372 ainfo
= xrealloc (ainfo
, ainfo_len
);
8373 retval
= get_adapters_info (ainfo
, &ainfo_len
);
8376 if (retval
== ERROR_SUCCESS
)
8378 int eth_count
= 0, tr_count
= 0, fddi_count
= 0, ppp_count
= 0;
8379 int sl_count
= 0, wlan_count
= 0, lo_count
= 0, ifx_count
= 0;
8381 struct sockaddr_in sa
;
8383 /* For the below, we need some winsock functions, so make sure
8384 the winsock DLL is loaded. If we cannot successfully load
8385 it, they will have no use of the information we provide,
8387 if (!winsock_lib
&& !init_winsock (1))
8390 for (adapter
= ainfo
; adapter
; adapter
= adapter
->Next
)
8392 char namebuf
[MAX_ADAPTER_NAME_LENGTH
+ 4];
8394 /* Present Unix-compatible interface names, instead of the
8395 Windows names, which are really GUIDs not readable by
8397 static const char *ifmt
[] = {
8398 "eth%d", "tr%d", "fddi%d", "ppp%d", "sl%d", "wlan%d",
8413 switch (adapter
->Type
)
8415 case MIB_IF_TYPE_ETHERNET
:
8416 /* Windows before Vista reports wireless adapters as
8417 Ethernet. Work around by looking at the Description
8419 if (strstr (adapter
->Description
, "Wireless "))
8422 if_num
= wlan_count
++;
8426 ifmt_idx
= ETHERNET
;
8427 if_num
= eth_count
++;
8430 case MIB_IF_TYPE_TOKENRING
:
8431 ifmt_idx
= TOKENRING
;
8432 if_num
= tr_count
++;
8434 case MIB_IF_TYPE_FDDI
:
8436 if_num
= fddi_count
++;
8438 case MIB_IF_TYPE_PPP
:
8440 if_num
= ppp_count
++;
8442 case MIB_IF_TYPE_SLIP
:
8444 if_num
= sl_count
++;
8446 case IF_TYPE_IEEE80211
:
8448 if_num
= wlan_count
++;
8450 case MIB_IF_TYPE_LOOPBACK
:
8453 ifmt_idx
= LOOPBACK
;
8454 if_num
= lo_count
++;
8460 ifmt_idx
= OTHER_IF
;
8461 if_num
= ifx_count
++;
8464 if (ifmt_idx
== NONE
)
8466 sprintf (namebuf
, ifmt
[ifmt_idx
], if_num
);
8468 sa
.sin_family
= AF_INET
;
8469 ip_addr
= sys_inet_addr (adapter
->IpAddressList
.IpAddress
.String
);
8470 if (ip_addr
== INADDR_NONE
)
8472 /* Bogus address, skip this interface. */
8475 sa
.sin_addr
.s_addr
= ip_addr
;
8478 res
= Fcons (Fcons (build_string (namebuf
),
8479 conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8480 sizeof (struct sockaddr
))),
8482 else if (strcmp (namebuf
, SSDATA (ifname
)) == 0)
8484 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
8485 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
8486 Lisp_Object flags
= Qnil
;
8490 /* Flags. We guess most of them by type, since the
8491 Windows flags are different and hard to get by. */
8492 flags
= Fcons (intern ("up"), flags
);
8493 if (ifmt_idx
== ETHERNET
|| ifmt_idx
== WLAN
)
8495 flags
= Fcons (intern ("broadcast"), flags
);
8496 flags
= Fcons (intern ("multicast"), flags
);
8498 flags
= Fcons (intern ("running"), flags
);
8499 if (ifmt_idx
== PPP
)
8501 flags
= Fcons (intern ("pointopoint"), flags
);
8502 flags
= Fcons (intern ("noarp"), flags
);
8504 if (adapter
->HaveWins
)
8505 flags
= Fcons (intern ("WINS"), flags
);
8506 if (adapter
->DhcpEnabled
)
8507 flags
= Fcons (intern ("dynamic"), flags
);
8509 res
= Fcons (flags
, res
);
8511 /* Hardware address and its family. */
8512 for (n
= 0; n
< adapter
->AddressLength
; n
++)
8513 p
->contents
[n
] = make_number ((int) adapter
->Address
[n
]);
8514 /* Windows does not support AF_LINK or AF_PACKET family
8515 of addresses. Use an arbitrary family number that is
8516 identical to what GNU/Linux returns. */
8517 res
= Fcons (Fcons (make_number (1), hwaddr
), res
);
8520 sa
.sin_family
= AF_INET
;
8521 net_mask
= sys_inet_addr (adapter
->IpAddressList
.IpMask
.String
);
8522 if (net_mask
!= INADDR_NONE
)
8524 sa
.sin_addr
.s_addr
= net_mask
;
8526 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8527 sizeof (struct sockaddr
)),
8531 res
= Fcons (Qnil
, res
);
8533 sa
.sin_family
= AF_INET
;
8534 if (ip_addr
!= INADDR_NONE
)
8536 /* Broadcast address is only reported by
8537 GetAdaptersAddresses, which is of limited
8538 availability. Generate it on our own. */
8539 u_long bcast_addr
= (ip_addr
& net_mask
) | ~net_mask
;
8541 sa
.sin_addr
.s_addr
= bcast_addr
;
8543 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8544 sizeof (struct sockaddr
)),
8548 sa
.sin_addr
.s_addr
= ip_addr
;
8550 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8551 sizeof (struct sockaddr
)),
8555 res
= Fcons (Qnil
, Fcons (Qnil
, res
));
8558 /* GetAdaptersInfo is documented to not report loopback
8559 interfaces, so we generate one out of thin air. */
8562 sa
.sin_family
= AF_INET
;
8566 sa
.sin_addr
.s_addr
= sys_inet_addr ("127.0.0.1");
8567 res
= Fcons (Fcons (build_string ("lo"),
8568 conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8569 sizeof (struct sockaddr
))),
8572 else if (strcmp (SSDATA (ifname
), "lo") == 0)
8574 res
= Fcons (Fcons (intern ("running"),
8575 Fcons (intern ("loopback"),
8576 Fcons (intern ("up"), Qnil
))), Qnil
);
8577 /* 772 is what 3 different GNU/Linux systems report for
8578 the loopback interface. */
8579 res
= Fcons (Fcons (make_number (772),
8580 Fmake_vector (make_number (6),
8583 sa
.sin_addr
.s_addr
= sys_inet_addr ("255.0.0.0");
8584 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8585 sizeof (struct sockaddr
)),
8587 sa
.sin_addr
.s_addr
= sys_inet_addr ("0.0.0.0");
8588 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8589 sizeof (struct sockaddr
)),
8591 sa
.sin_addr
.s_addr
= sys_inet_addr ("127.0.0.1");
8592 res
= Fcons (conv_sockaddr_to_lisp ((struct sockaddr
*) &sa
,
8593 sizeof (struct sockaddr
)),
8606 network_interface_list (void)
8608 return network_interface_get_info (Qnil
);
8612 network_interface_info (Lisp_Object ifname
)
8614 CHECK_STRING (ifname
);
8615 return network_interface_get_info (ifname
);
8619 /* The Windows CRT functions are "optimized for speed", so they don't
8620 check for timezone and DST changes if they were last called less
8621 than 1 minute ago (see http://support.microsoft.com/kb/821231). So
8622 all Emacs features that repeatedly call time functions (e.g.,
8623 display-time) are in real danger of missing timezone and DST
8624 changes. Calling tzset before each localtime call fixes that. */
8626 sys_localtime (const time_t *t
)
8629 return localtime (t
);
8634 /* Try loading LIBRARY_ID from the file(s) specified in
8635 Vdynamic_library_alist. If the library is loaded successfully,
8636 return the handle of the DLL, and record the filename in the
8637 property :loaded-from of LIBRARY_ID. If the library could not be
8638 found, or when it was already loaded (because the handle is not
8639 recorded anywhere, and so is lost after use), return NULL.
8641 We could also save the handle in :loaded-from, but currently
8642 there's no use case for it. */
8644 w32_delayed_load (Lisp_Object library_id
)
8646 HMODULE dll_handle
= NULL
;
8648 CHECK_SYMBOL (library_id
);
8650 if (CONSP (Vdynamic_library_alist
)
8651 && NILP (Fassq (library_id
, Vlibrary_cache
)))
8653 Lisp_Object found
= Qnil
;
8654 Lisp_Object dlls
= Fassq (library_id
, Vdynamic_library_alist
);
8657 for (dlls
= XCDR (dlls
); CONSP (dlls
); dlls
= XCDR (dlls
))
8659 Lisp_Object dll
= XCAR (dlls
);
8660 char name
[MAX_UTF8_PATH
];
8664 dll
= ENCODE_FILE (dll
);
8665 if (w32_unicode_filenames
)
8667 wchar_t name_w
[MAX_PATH
];
8669 filename_to_utf16 (SSDATA (dll
), name_w
);
8670 dll_handle
= LoadLibraryW (name_w
);
8673 res
= GetModuleFileNameW (dll_handle
, name_w
,
8676 filename_from_utf16 (name_w
, name
);
8681 char name_a
[MAX_PATH
];
8683 filename_to_ansi (SSDATA (dll
), name_a
);
8684 dll_handle
= LoadLibraryA (name_a
);
8687 res
= GetModuleFileNameA (dll_handle
, name_a
,
8690 filename_from_ansi (name_a
, name
);
8695 ptrdiff_t len
= strlen (name
);
8698 /* Possibly truncated */
8699 ? make_specified_string (name
, -1, len
, 1)
8705 Fput (library_id
, QCloaded_from
, found
);
8713 check_windows_init_file (void)
8715 /* A common indication that Emacs is not installed properly is when
8716 it cannot find the Windows installation file. If this file does
8717 not exist in the expected place, tell the user. */
8719 if (!noninteractive
&& !inhibit_window_system
8720 /* Vload_path is not yet initialized when we are loading
8722 && NILP (Vpurify_flag
))
8724 Lisp_Object init_file
;
8727 /* Implementation note: this function runs early during Emacs
8728 startup, before startup.el is run. So Vload_path is still in
8729 its initial unibyte form, but it holds UTF-8 encoded file
8730 names, since init_callproc was already called. So we do not
8731 need to ENCODE_FILE here, but we do need to convert the file
8732 names from UTF-8 to ANSI. */
8733 init_file
= build_string ("term/w32-win");
8734 fd
= openp (Vload_path
, init_file
, Fget_load_suffixes (), NULL
, Qnil
, 0);
8737 Lisp_Object load_path_print
= Fprin1_to_string (Vload_path
, Qnil
);
8738 char *init_file_name
= SDATA (init_file
);
8739 char *load_path
= SDATA (load_path_print
);
8740 char *buffer
= alloca (1024
8741 + strlen (init_file_name
)
8742 + strlen (load_path
));
8747 "The Emacs Windows initialization file \"%s.el\" "
8748 "could not be found in your Emacs installation. "
8749 "Emacs checked the following directories for this file:\n"
8751 "When Emacs cannot find this file, it usually means that it "
8752 "was not installed properly, or its distribution file was "
8753 "not unpacked properly.\nSee the README.W32 file in the "
8754 "top-level Emacs directory for more information.",
8755 init_file_name
, load_path
);
8756 needed
= pMultiByteToWideChar (CP_UTF8
, MB_ERR_INVALID_CHARS
, buffer
,
8760 wchar_t *msg_w
= alloca ((needed
+ 1) * sizeof (wchar_t));
8762 pMultiByteToWideChar (CP_UTF8
, MB_ERR_INVALID_CHARS
, buffer
, -1,
8764 needed
= pWideCharToMultiByte (CP_ACP
, 0, msg_w
, -1,
8765 NULL
, 0, NULL
, NULL
);
8768 char *msg_a
= alloca (needed
+ 1);
8770 pWideCharToMultiByte (CP_ACP
, 0, msg_w
, -1, msg_a
, needed
,
8777 "Emacs Abort Dialog",
8778 MB_OK
| MB_ICONEXCLAMATION
| MB_TASKMODAL
);
8779 /* Use the low-level system abort. */
8790 term_ntproc (int ignored
)
8796 /* shutdown the socket interface if necessary */
8803 init_ntproc (int dumping
)
8805 sigset_t initial_mask
= 0;
8807 /* Initialize the socket interface now if available and requested by
8808 the user by defining PRELOAD_WINSOCK; otherwise loading will be
8809 delayed until open-network-stream is called (w32-has-winsock can
8810 also be used to dynamically load or reload winsock).
8812 Conveniently, init_environment is called before us, so
8813 PRELOAD_WINSOCK can be set in the registry. */
8815 /* Always initialize this correctly. */
8818 if (getenv ("PRELOAD_WINSOCK") != NULL
)
8819 init_winsock (TRUE
);
8821 /* Initial preparation for subprocess support: replace our standard
8822 handles with non-inheritable versions. */
8825 HANDLE stdin_save
= INVALID_HANDLE_VALUE
;
8826 HANDLE stdout_save
= INVALID_HANDLE_VALUE
;
8827 HANDLE stderr_save
= INVALID_HANDLE_VALUE
;
8829 parent
= GetCurrentProcess ();
8831 /* ignore errors when duplicating and closing; typically the
8832 handles will be invalid when running as a gui program. */
8833 DuplicateHandle (parent
,
8834 GetStdHandle (STD_INPUT_HANDLE
),
8839 DUPLICATE_SAME_ACCESS
);
8841 DuplicateHandle (parent
,
8842 GetStdHandle (STD_OUTPUT_HANDLE
),
8847 DUPLICATE_SAME_ACCESS
);
8849 DuplicateHandle (parent
,
8850 GetStdHandle (STD_ERROR_HANDLE
),
8855 DUPLICATE_SAME_ACCESS
);
8861 if (stdin_save
!= INVALID_HANDLE_VALUE
)
8862 _open_osfhandle ((intptr_t) stdin_save
, O_TEXT
);
8864 _open ("nul", O_TEXT
| O_NOINHERIT
| O_RDONLY
);
8867 if (stdout_save
!= INVALID_HANDLE_VALUE
)
8868 _open_osfhandle ((intptr_t) stdout_save
, O_TEXT
);
8870 _open ("nul", O_TEXT
| O_NOINHERIT
| O_WRONLY
);
8873 if (stderr_save
!= INVALID_HANDLE_VALUE
)
8874 _open_osfhandle ((intptr_t) stderr_save
, O_TEXT
);
8876 _open ("nul", O_TEXT
| O_NOINHERIT
| O_WRONLY
);
8880 /* unfortunately, atexit depends on implementation of malloc */
8881 /* atexit (term_ntproc); */
8884 /* Make sure we start with all signals unblocked. */
8885 sigprocmask (SIG_SETMASK
, &initial_mask
, NULL
);
8886 signal (SIGABRT
, term_ntproc
);
8890 /* determine which drives are fixed, for GetCachedVolumeInformation */
8892 /* GetDriveType must have trailing backslash. */
8893 char drive
[] = "A:\\";
8895 /* Loop over all possible drive letters */
8896 while (*drive
<= 'Z')
8898 /* Record if this drive letter refers to a fixed drive. */
8899 fixed_drives
[DRIVE_INDEX (*drive
)] =
8900 (GetDriveType (drive
) == DRIVE_FIXED
);
8905 /* Reset the volume info cache. */
8906 volume_cache
= NULL
;
8911 shutdown_handler ensures that buffers' autosave files are
8912 up to date when the user logs off, or the system shuts down.
8915 shutdown_handler (DWORD type
)
8917 /* Ctrl-C and Ctrl-Break are already suppressed, so don't handle them. */
8918 if (type
== CTRL_CLOSE_EVENT
/* User closes console window. */
8919 || type
== CTRL_LOGOFF_EVENT
/* User logs off. */
8920 || type
== CTRL_SHUTDOWN_EVENT
) /* User shutsdown. */
8922 /* Shut down cleanly, making sure autosave files are up to date. */
8923 shut_down_emacs (0, Qnil
);
8926 /* Allow other handlers to handle this signal. */
8930 /* On Windows 9X, load UNICOWS.DLL and return its handle, or die. On
8931 NT, return a handle to GDI32.DLL. */
8933 maybe_load_unicows_dll (void)
8935 if (os_subtype
== OS_9X
)
8937 HANDLE ret
= LoadLibrary ("Unicows.dll");
8940 /* These two functions are present on Windows 9X as stubs
8941 that always fail. We need the real implementations from
8942 UNICOWS.DLL, so we must call these functions through
8943 pointers, and assign the correct addresses to these
8944 pointers at program startup (see emacs.c, which calls
8945 this function early on). */
8946 pMultiByteToWideChar
= GetProcAddress (ret
, "MultiByteToWideChar");
8947 pWideCharToMultiByte
= GetProcAddress (ret
, "WideCharToMultiByte");
8954 button
= MessageBox (NULL
,
8955 "Emacs cannot load the UNICOWS.DLL library.\n"
8956 "This library is essential for using Emacs\n"
8957 "on this system. You need to install it.\n\n"
8958 "Emacs will exit when you click OK.",
8959 "Emacs cannot load UNICOWS.DLL",
8960 MB_ICONERROR
| MB_TASKMODAL
8961 | MB_SETFOREGROUND
| MB_OK
);
8972 /* On NT family of Windows, these two functions are always
8973 linked in, so we just assign their addresses to the 2
8974 pointers; no need for the LoadLibrary dance. */
8975 pMultiByteToWideChar
= MultiByteToWideChar
;
8976 pWideCharToMultiByte
= WideCharToMultiByte
;
8977 return LoadLibrary ("Gdi32.dll");
8982 globals_of_w32 is used to initialize those global variables that
8983 must always be initialized on startup even when the global variable
8984 initialized is non zero (see the function main in emacs.c).
8987 globals_of_w32 (void)
8989 HMODULE kernel32
= GetModuleHandle ("kernel32.dll");
8991 get_process_times_fn
= (GetProcessTimes_Proc
)
8992 GetProcAddress (kernel32
, "GetProcessTimes");
8994 DEFSYM (QCloaded_from
, ":loaded-from");
8996 g_b_init_is_windows_9x
= 0;
8997 g_b_init_open_process_token
= 0;
8998 g_b_init_get_token_information
= 0;
8999 g_b_init_lookup_account_sid
= 0;
9000 g_b_init_get_sid_sub_authority
= 0;
9001 g_b_init_get_sid_sub_authority_count
= 0;
9002 g_b_init_get_security_info
= 0;
9003 g_b_init_get_file_security_w
= 0;
9004 g_b_init_get_file_security_a
= 0;
9005 g_b_init_get_security_descriptor_owner
= 0;
9006 g_b_init_get_security_descriptor_group
= 0;
9007 g_b_init_is_valid_sid
= 0;
9008 g_b_init_create_toolhelp32_snapshot
= 0;
9009 g_b_init_process32_first
= 0;
9010 g_b_init_process32_next
= 0;
9011 g_b_init_open_thread_token
= 0;
9012 g_b_init_impersonate_self
= 0;
9013 g_b_init_revert_to_self
= 0;
9014 g_b_init_get_process_memory_info
= 0;
9015 g_b_init_get_process_working_set_size
= 0;
9016 g_b_init_global_memory_status
= 0;
9017 g_b_init_global_memory_status_ex
= 0;
9018 g_b_init_equal_sid
= 0;
9019 g_b_init_copy_sid
= 0;
9020 g_b_init_get_length_sid
= 0;
9021 g_b_init_get_native_system_info
= 0;
9022 g_b_init_get_system_times
= 0;
9023 g_b_init_create_symbolic_link_w
= 0;
9024 g_b_init_create_symbolic_link_a
= 0;
9025 g_b_init_get_security_descriptor_dacl
= 0;
9026 g_b_init_convert_sd_to_sddl
= 0;
9027 g_b_init_convert_sddl_to_sd
= 0;
9028 g_b_init_is_valid_security_descriptor
= 0;
9029 g_b_init_set_file_security_w
= 0;
9030 g_b_init_set_file_security_a
= 0;
9031 g_b_init_set_named_security_info_w
= 0;
9032 g_b_init_set_named_security_info_a
= 0;
9033 g_b_init_get_adapters_info
= 0;
9034 num_of_processors
= 0;
9035 /* The following sets a handler for shutdown notifications for
9036 console apps. This actually applies to Emacs in both console and
9037 GUI modes, since we had to fool windows into thinking emacs is a
9038 console application to get console mode to work. */
9039 SetConsoleCtrlHandler (shutdown_handler
, TRUE
);
9041 /* "None" is the default group name on standalone workstations. */
9042 strcpy (dflt_group_name
, "None");
9044 /* Reset, in case it has some value inherited from dump time. */
9045 w32_stat_get_owner_group
= 0;
9047 /* If w32_unicode_filenames is non-zero, we will be using Unicode
9048 (a.k.a. "wide") APIs to invoke functions that accept file
9050 if (is_windows_9x ())
9051 w32_unicode_filenames
= 0;
9053 w32_unicode_filenames
= 1;
9056 /* For make-serial-process */
9058 serial_open (Lisp_Object port_obj
)
9060 char *port
= SSDATA (port_obj
);
9065 hnd
= CreateFile (port
, GENERIC_READ
| GENERIC_WRITE
, 0, 0,
9066 OPEN_EXISTING
, FILE_FLAG_OVERLAPPED
, 0);
9067 if (hnd
== INVALID_HANDLE_VALUE
)
9068 error ("Could not open %s", port
);
9069 fd
= (int) _open_osfhandle ((intptr_t) hnd
, 0);
9071 error ("Could not open %s", port
);
9075 error ("Could not create child process");
9077 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
9078 fd_info
[ fd
].hnd
= hnd
;
9079 fd_info
[ fd
].flags
|=
9080 FILE_READ
| FILE_WRITE
| FILE_BINARY
| FILE_SERIAL
;
9081 if (fd_info
[ fd
].cp
!= NULL
)
9083 error ("fd_info[fd = %d] is already in use", fd
);
9085 fd_info
[ fd
].cp
= cp
;
9086 cp
->ovl_read
.hEvent
= CreateEvent (NULL
, TRUE
, FALSE
, NULL
);
9087 if (cp
->ovl_read
.hEvent
== NULL
)
9088 error ("Could not create read event");
9089 cp
->ovl_write
.hEvent
= CreateEvent (NULL
, TRUE
, FALSE
, NULL
);
9090 if (cp
->ovl_write
.hEvent
== NULL
)
9091 error ("Could not create write event");
9096 /* For serial-process-configure */
9098 serial_configure (struct Lisp_Process
*p
, Lisp_Object contact
)
9100 Lisp_Object childp2
= Qnil
;
9101 Lisp_Object tem
= Qnil
;
9105 char summary
[4] = "???"; /* This usually becomes "8N1". */
9107 if ((fd_info
[ p
->outfd
].flags
& FILE_SERIAL
) == 0)
9108 error ("Not a serial process");
9109 hnd
= fd_info
[ p
->outfd
].hnd
;
9111 childp2
= Fcopy_sequence (p
->childp
);
9113 /* Initialize timeouts for blocking read and blocking write. */
9114 if (!GetCommTimeouts (hnd
, &ct
))
9115 error ("GetCommTimeouts() failed");
9116 ct
.ReadIntervalTimeout
= 0;
9117 ct
.ReadTotalTimeoutMultiplier
= 0;
9118 ct
.ReadTotalTimeoutConstant
= 0;
9119 ct
.WriteTotalTimeoutMultiplier
= 0;
9120 ct
.WriteTotalTimeoutConstant
= 0;
9121 if (!SetCommTimeouts (hnd
, &ct
))
9122 error ("SetCommTimeouts() failed");
9123 /* Read port attributes and prepare default configuration. */
9124 memset (&dcb
, 0, sizeof (dcb
));
9125 dcb
.DCBlength
= sizeof (DCB
);
9126 if (!GetCommState (hnd
, &dcb
))
9127 error ("GetCommState() failed");
9130 dcb
.fAbortOnError
= FALSE
;
9131 /* dcb.XonLim and dcb.XoffLim are set by GetCommState() */
9136 /* Configure speed. */
9137 if (!NILP (Fplist_member (contact
, QCspeed
)))
9138 tem
= Fplist_get (contact
, QCspeed
);
9140 tem
= Fplist_get (p
->childp
, QCspeed
);
9142 dcb
.BaudRate
= XINT (tem
);
9143 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
9145 /* Configure bytesize. */
9146 if (!NILP (Fplist_member (contact
, QCbytesize
)))
9147 tem
= Fplist_get (contact
, QCbytesize
);
9149 tem
= Fplist_get (p
->childp
, QCbytesize
);
9151 tem
= make_number (8);
9153 if (XINT (tem
) != 7 && XINT (tem
) != 8)
9154 error (":bytesize must be nil (8), 7, or 8");
9155 dcb
.ByteSize
= XINT (tem
);
9156 summary
[0] = XINT (tem
) + '0';
9157 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
9159 /* Configure parity. */
9160 if (!NILP (Fplist_member (contact
, QCparity
)))
9161 tem
= Fplist_get (contact
, QCparity
);
9163 tem
= Fplist_get (p
->childp
, QCparity
);
9164 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
9165 error (":parity must be nil (no parity), `even', or `odd'");
9166 dcb
.fParity
= FALSE
;
9167 dcb
.Parity
= NOPARITY
;
9168 dcb
.fErrorChar
= FALSE
;
9173 else if (EQ (tem
, Qeven
))
9177 dcb
.Parity
= EVENPARITY
;
9178 dcb
.fErrorChar
= TRUE
;
9180 else if (EQ (tem
, Qodd
))
9184 dcb
.Parity
= ODDPARITY
;
9185 dcb
.fErrorChar
= TRUE
;
9187 childp2
= Fplist_put (childp2
, QCparity
, tem
);
9189 /* Configure stopbits. */
9190 if (!NILP (Fplist_member (contact
, QCstopbits
)))
9191 tem
= Fplist_get (contact
, QCstopbits
);
9193 tem
= Fplist_get (p
->childp
, QCstopbits
);
9195 tem
= make_number (1);
9197 if (XINT (tem
) != 1 && XINT (tem
) != 2)
9198 error (":stopbits must be nil (1 stopbit), 1, or 2");
9199 summary
[2] = XINT (tem
) + '0';
9200 if (XINT (tem
) == 1)
9201 dcb
.StopBits
= ONESTOPBIT
;
9202 else if (XINT (tem
) == 2)
9203 dcb
.StopBits
= TWOSTOPBITS
;
9204 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
9206 /* Configure flowcontrol. */
9207 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
9208 tem
= Fplist_get (contact
, QCflowcontrol
);
9210 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
9211 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
9212 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
9213 dcb
.fOutxCtsFlow
= FALSE
;
9214 dcb
.fOutxDsrFlow
= FALSE
;
9215 dcb
.fDtrControl
= DTR_CONTROL_DISABLE
;
9216 dcb
.fDsrSensitivity
= FALSE
;
9217 dcb
.fTXContinueOnXoff
= FALSE
;
9220 dcb
.fRtsControl
= RTS_CONTROL_DISABLE
;
9221 dcb
.XonChar
= 17; /* Control-Q */
9222 dcb
.XoffChar
= 19; /* Control-S */
9225 /* Already configured. */
9227 else if (EQ (tem
, Qhw
))
9229 dcb
.fRtsControl
= RTS_CONTROL_HANDSHAKE
;
9230 dcb
.fOutxCtsFlow
= TRUE
;
9232 else if (EQ (tem
, Qsw
))
9237 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
9239 /* Activate configuration. */
9240 if (!SetCommState (hnd
, &dcb
))
9241 error ("SetCommState() failed");
9243 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
9244 pset_childp (p
, childp2
);
9250 emacs_gnutls_pull (gnutls_transport_ptr_t p
, void* buf
, size_t sz
)
9254 struct timespec timeout
;
9255 struct Lisp_Process
*process
= (struct Lisp_Process
*)p
;
9256 int fd
= process
->infd
;
9258 n
= sys_read (fd
, (char*)buf
, sz
);
9265 /* Translate the WSAEWOULDBLOCK alias EWOULDBLOCK to EAGAIN. */
9266 if (err
== EWOULDBLOCK
)
9269 emacs_gnutls_transport_set_errno (process
->gnutls_state
, err
);
9275 emacs_gnutls_push (gnutls_transport_ptr_t p
, const void* buf
, size_t sz
)
9277 struct Lisp_Process
*process
= (struct Lisp_Process
*)p
;
9278 int fd
= process
->outfd
;
9279 ssize_t n
= sys_write (fd
, buf
, sz
);
9281 /* 0 or more bytes written means everything went fine. */
9285 /* Negative bytes written means we got an error in errno.
9286 Translate the WSAEWOULDBLOCK alias EWOULDBLOCK to EAGAIN. */
9287 emacs_gnutls_transport_set_errno (process
->gnutls_state
,
9288 errno
== EWOULDBLOCK
? EAGAIN
: errno
);
9292 #endif /* HAVE_GNUTLS */