1 /* Utility and Unix shadow routines for GNU Emacs on the Microsoft Windows API.
2 Copyright (C) 1994-1995, 2000-2012 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
20 Geoff Voelker (voelker@cs.washington.edu) 7-29-94
22 #include <stddef.h> /* for offsetof */
25 #include <float.h> /* for DBL_EPSILON */
33 #include <sys/utime.h>
34 #include <mbstring.h> /* for _mbspbrk */
39 /* must include CRT headers *before* config.h */
74 #define _ANONYMOUS_UNION
75 #define _ANONYMOUS_STRUCT
78 /* Some versions of compiler define MEMORYSTATUSEX, some don't, so we
79 use a different name to avoid compilation problems. */
80 typedef struct _MEMORY_STATUS_EX
{
83 DWORDLONG ullTotalPhys
;
84 DWORDLONG ullAvailPhys
;
85 DWORDLONG ullTotalPageFile
;
86 DWORDLONG ullAvailPageFile
;
87 DWORDLONG ullTotalVirtual
;
88 DWORDLONG ullAvailVirtual
;
89 DWORDLONG ullAvailExtendedVirtual
;
90 } MEMORY_STATUS_EX
,*LPMEMORY_STATUS_EX
;
100 #if !defined (__MINGW32__) || __W32API_MAJOR_VERSION < 3 || (__W32API_MAJOR_VERSION == 3 && __W32API_MINOR_VERSION < 15)
101 /* This either is not in psapi.h or guarded by higher value of
102 _WIN32_WINNT than what we use. w32api supplied with MinGW 3.15
103 defines it in psapi.h */
104 typedef struct _PROCESS_MEMORY_COUNTERS_EX
{
106 DWORD PageFaultCount
;
107 DWORD PeakWorkingSetSize
;
108 DWORD WorkingSetSize
;
109 DWORD QuotaPeakPagedPoolUsage
;
110 DWORD QuotaPagedPoolUsage
;
111 DWORD QuotaPeakNonPagedPoolUsage
;
112 DWORD QuotaNonPagedPoolUsage
;
114 DWORD PeakPagefileUsage
;
116 } PROCESS_MEMORY_COUNTERS_EX
,*PPROCESS_MEMORY_COUNTERS_EX
;
119 #include <winioctl.h>
123 /* MSVC doesn't provide the definition of REPARSE_DATA_BUFFER, except
124 on ntifs.h, which cannot be included because it triggers conflicts
125 with other Windows API headers. So we define it here by hand. */
127 typedef struct _REPARSE_DATA_BUFFER
{
129 USHORT ReparseDataLength
;
133 USHORT SubstituteNameOffset
;
134 USHORT SubstituteNameLength
;
135 USHORT PrintNameOffset
;
136 USHORT PrintNameLength
;
139 } SymbolicLinkReparseBuffer
;
141 USHORT SubstituteNameOffset
;
142 USHORT SubstituteNameLength
;
143 USHORT PrintNameOffset
;
144 USHORT PrintNameLength
;
146 } MountPointReparseBuffer
;
149 } GenericReparseBuffer
;
151 } REPARSE_DATA_BUFFER
, *PREPARSE_DATA_BUFFER
;
155 /* TCP connection support. */
156 #include <sys/socket.h>
179 #include "dispextern.h" /* for xstrcasecmp */
180 #include "coding.h" /* for Vlocale_coding_system */
182 #include "careadlinkat.h"
183 #include "allocator.h"
185 /* For serial_configure and serial_open. */
188 typedef HRESULT (WINAPI
* ShGetFolderPath_fn
)
189 (IN HWND
, IN
int, IN HANDLE
, IN DWORD
, OUT
char *);
191 Lisp_Object QCloaded_from
;
193 void globals_of_w32 (void);
194 static DWORD
get_rid (PSID
);
195 static int is_symlink (const char *);
196 static char * chase_symlinks (const char *);
197 static int enable_privilege (LPCTSTR
, BOOL
, TOKEN_PRIVILEGES
*);
198 static int restore_privilege (TOKEN_PRIVILEGES
*);
199 static BOOL WINAPI
revert_to_self (void);
202 /* Initialization states.
204 WARNING: If you add any more such variables for additional APIs,
205 you MUST add initialization for them to globals_of_w32
206 below. This is because these variables might get set
207 to non-NULL values during dumping, but the dumped Emacs
208 cannot reuse those values, because it could be run on a
209 different version of the OS, where API addresses are
211 static BOOL g_b_init_is_windows_9x
;
212 static BOOL g_b_init_open_process_token
;
213 static BOOL g_b_init_get_token_information
;
214 static BOOL g_b_init_lookup_account_sid
;
215 static BOOL g_b_init_get_sid_sub_authority
;
216 static BOOL g_b_init_get_sid_sub_authority_count
;
217 static BOOL g_b_init_get_security_info
;
218 static BOOL g_b_init_get_file_security
;
219 static BOOL g_b_init_get_security_descriptor_owner
;
220 static BOOL g_b_init_get_security_descriptor_group
;
221 static BOOL g_b_init_is_valid_sid
;
222 static BOOL g_b_init_create_toolhelp32_snapshot
;
223 static BOOL g_b_init_process32_first
;
224 static BOOL g_b_init_process32_next
;
225 static BOOL g_b_init_open_thread_token
;
226 static BOOL g_b_init_impersonate_self
;
227 static BOOL g_b_init_revert_to_self
;
228 static BOOL g_b_init_get_process_memory_info
;
229 static BOOL g_b_init_get_process_working_set_size
;
230 static BOOL g_b_init_global_memory_status
;
231 static BOOL g_b_init_global_memory_status_ex
;
232 static BOOL g_b_init_get_length_sid
;
233 static BOOL g_b_init_equal_sid
;
234 static BOOL g_b_init_copy_sid
;
235 static BOOL g_b_init_get_native_system_info
;
236 static BOOL g_b_init_get_system_times
;
237 static BOOL g_b_init_create_symbolic_link
;
240 BEGIN: Wrapper functions around OpenProcessToken
241 and other functions in advapi32.dll that are only
242 supported in Windows NT / 2k / XP
244 /* ** Function pointer typedefs ** */
245 typedef BOOL (WINAPI
* OpenProcessToken_Proc
) (
246 HANDLE ProcessHandle
,
248 PHANDLE TokenHandle
);
249 typedef BOOL (WINAPI
* GetTokenInformation_Proc
) (
251 TOKEN_INFORMATION_CLASS TokenInformationClass
,
252 LPVOID TokenInformation
,
253 DWORD TokenInformationLength
,
254 PDWORD ReturnLength
);
255 typedef BOOL (WINAPI
* GetProcessTimes_Proc
) (
256 HANDLE process_handle
,
257 LPFILETIME creation_time
,
258 LPFILETIME exit_time
,
259 LPFILETIME kernel_time
,
260 LPFILETIME user_time
);
262 GetProcessTimes_Proc get_process_times_fn
= NULL
;
265 const char * const LookupAccountSid_Name
= "LookupAccountSidW";
266 const char * const GetFileSecurity_Name
= "GetFileSecurityW";
268 const char * const LookupAccountSid_Name
= "LookupAccountSidA";
269 const char * const GetFileSecurity_Name
= "GetFileSecurityA";
271 typedef BOOL (WINAPI
* LookupAccountSid_Proc
) (
272 LPCTSTR lpSystemName
,
277 LPDWORD cbDomainName
,
278 PSID_NAME_USE peUse
);
279 typedef PDWORD (WINAPI
* GetSidSubAuthority_Proc
) (
282 typedef PUCHAR (WINAPI
* GetSidSubAuthorityCount_Proc
) (
284 typedef DWORD (WINAPI
* GetSecurityInfo_Proc
) (
286 SE_OBJECT_TYPE ObjectType
,
287 SECURITY_INFORMATION SecurityInfo
,
292 PSECURITY_DESCRIPTOR
*ppSecurityDescriptor
);
293 typedef BOOL (WINAPI
* GetFileSecurity_Proc
) (
295 SECURITY_INFORMATION RequestedInformation
,
296 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
298 LPDWORD lpnLengthNeeded
);
299 typedef BOOL (WINAPI
* GetSecurityDescriptorOwner_Proc
) (
300 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
302 LPBOOL lpbOwnerDefaulted
);
303 typedef BOOL (WINAPI
* GetSecurityDescriptorGroup_Proc
) (
304 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
306 LPBOOL lpbGroupDefaulted
);
307 typedef BOOL (WINAPI
* IsValidSid_Proc
) (
309 typedef HANDLE (WINAPI
* CreateToolhelp32Snapshot_Proc
) (
311 DWORD th32ProcessID
);
312 typedef BOOL (WINAPI
* Process32First_Proc
) (
314 LPPROCESSENTRY32 lppe
);
315 typedef BOOL (WINAPI
* Process32Next_Proc
) (
317 LPPROCESSENTRY32 lppe
);
318 typedef BOOL (WINAPI
* OpenThreadToken_Proc
) (
322 PHANDLE TokenHandle
);
323 typedef BOOL (WINAPI
* ImpersonateSelf_Proc
) (
324 SECURITY_IMPERSONATION_LEVEL ImpersonationLevel
);
325 typedef BOOL (WINAPI
* RevertToSelf_Proc
) (void);
326 typedef BOOL (WINAPI
* GetProcessMemoryInfo_Proc
) (
328 PPROCESS_MEMORY_COUNTERS ppsmemCounters
,
330 typedef BOOL (WINAPI
* GetProcessWorkingSetSize_Proc
) (
332 DWORD
* lpMinimumWorkingSetSize
,
333 DWORD
* lpMaximumWorkingSetSize
);
334 typedef BOOL (WINAPI
* GlobalMemoryStatus_Proc
) (
335 LPMEMORYSTATUS lpBuffer
);
336 typedef BOOL (WINAPI
* GlobalMemoryStatusEx_Proc
) (
337 LPMEMORY_STATUS_EX lpBuffer
);
338 typedef BOOL (WINAPI
* CopySid_Proc
) (
339 DWORD nDestinationSidLength
,
340 PSID pDestinationSid
,
342 typedef BOOL (WINAPI
* EqualSid_Proc
) (
345 typedef DWORD (WINAPI
* GetLengthSid_Proc
) (
347 typedef void (WINAPI
* GetNativeSystemInfo_Proc
) (
348 LPSYSTEM_INFO lpSystemInfo
);
349 typedef BOOL (WINAPI
* GetSystemTimes_Proc
) (
350 LPFILETIME lpIdleTime
,
351 LPFILETIME lpKernelTime
,
352 LPFILETIME lpUserTime
);
353 typedef BOOLEAN (WINAPI
*CreateSymbolicLink_Proc
) (
354 LPTSTR lpSymlinkFileName
,
355 LPTSTR lpTargetFileName
,
358 /* ** A utility function ** */
362 static BOOL s_b_ret
= 0;
363 OSVERSIONINFO os_ver
;
364 if (g_b_init_is_windows_9x
== 0)
366 g_b_init_is_windows_9x
= 1;
367 ZeroMemory (&os_ver
, sizeof (OSVERSIONINFO
));
368 os_ver
.dwOSVersionInfoSize
= sizeof (OSVERSIONINFO
);
369 if (GetVersionEx (&os_ver
))
371 s_b_ret
= (os_ver
.dwPlatformId
== VER_PLATFORM_WIN32_WINDOWS
);
377 static Lisp_Object
ltime (ULONGLONG
);
379 /* Get total user and system times for get-internal-run-time.
380 Returns a list of integers if the times are provided by the OS
381 (NT derivatives), otherwise it returns the result of current-time. */
383 w32_get_internal_run_time (void)
385 if (get_process_times_fn
)
387 FILETIME create
, exit
, kernel
, user
;
388 HANDLE proc
= GetCurrentProcess ();
389 if ((*get_process_times_fn
) (proc
, &create
, &exit
, &kernel
, &user
))
391 LARGE_INTEGER user_int
, kernel_int
, total
;
392 user_int
.LowPart
= user
.dwLowDateTime
;
393 user_int
.HighPart
= user
.dwHighDateTime
;
394 kernel_int
.LowPart
= kernel
.dwLowDateTime
;
395 kernel_int
.HighPart
= kernel
.dwHighDateTime
;
396 total
.QuadPart
= user_int
.QuadPart
+ kernel_int
.QuadPart
;
397 return ltime (total
.QuadPart
);
401 return Fcurrent_time ();
404 /* ** The wrapper functions ** */
407 open_process_token (HANDLE ProcessHandle
,
411 static OpenProcessToken_Proc s_pfn_Open_Process_Token
= NULL
;
412 HMODULE hm_advapi32
= NULL
;
413 if (is_windows_9x () == TRUE
)
417 if (g_b_init_open_process_token
== 0)
419 g_b_init_open_process_token
= 1;
420 hm_advapi32
= LoadLibrary ("Advapi32.dll");
421 s_pfn_Open_Process_Token
=
422 (OpenProcessToken_Proc
) GetProcAddress (hm_advapi32
, "OpenProcessToken");
424 if (s_pfn_Open_Process_Token
== NULL
)
429 s_pfn_Open_Process_Token (
437 get_token_information (HANDLE TokenHandle
,
438 TOKEN_INFORMATION_CLASS TokenInformationClass
,
439 LPVOID TokenInformation
,
440 DWORD TokenInformationLength
,
443 static GetTokenInformation_Proc s_pfn_Get_Token_Information
= NULL
;
444 HMODULE hm_advapi32
= NULL
;
445 if (is_windows_9x () == TRUE
)
449 if (g_b_init_get_token_information
== 0)
451 g_b_init_get_token_information
= 1;
452 hm_advapi32
= LoadLibrary ("Advapi32.dll");
453 s_pfn_Get_Token_Information
=
454 (GetTokenInformation_Proc
) GetProcAddress (hm_advapi32
, "GetTokenInformation");
456 if (s_pfn_Get_Token_Information
== NULL
)
461 s_pfn_Get_Token_Information (
463 TokenInformationClass
,
465 TokenInformationLength
,
471 lookup_account_sid (LPCTSTR lpSystemName
,
476 LPDWORD cbDomainName
,
479 static LookupAccountSid_Proc s_pfn_Lookup_Account_Sid
= NULL
;
480 HMODULE hm_advapi32
= NULL
;
481 if (is_windows_9x () == TRUE
)
485 if (g_b_init_lookup_account_sid
== 0)
487 g_b_init_lookup_account_sid
= 1;
488 hm_advapi32
= LoadLibrary ("Advapi32.dll");
489 s_pfn_Lookup_Account_Sid
=
490 (LookupAccountSid_Proc
) GetProcAddress (hm_advapi32
, LookupAccountSid_Name
);
492 if (s_pfn_Lookup_Account_Sid
== NULL
)
497 s_pfn_Lookup_Account_Sid (
509 get_sid_sub_authority (PSID pSid
, DWORD n
)
511 static GetSidSubAuthority_Proc s_pfn_Get_Sid_Sub_Authority
= NULL
;
512 static DWORD zero
= 0U;
513 HMODULE hm_advapi32
= NULL
;
514 if (is_windows_9x () == TRUE
)
518 if (g_b_init_get_sid_sub_authority
== 0)
520 g_b_init_get_sid_sub_authority
= 1;
521 hm_advapi32
= LoadLibrary ("Advapi32.dll");
522 s_pfn_Get_Sid_Sub_Authority
=
523 (GetSidSubAuthority_Proc
) GetProcAddress (
524 hm_advapi32
, "GetSidSubAuthority");
526 if (s_pfn_Get_Sid_Sub_Authority
== NULL
)
530 return (s_pfn_Get_Sid_Sub_Authority (pSid
, n
));
534 get_sid_sub_authority_count (PSID pSid
)
536 static GetSidSubAuthorityCount_Proc s_pfn_Get_Sid_Sub_Authority_Count
= NULL
;
537 static UCHAR zero
= 0U;
538 HMODULE hm_advapi32
= NULL
;
539 if (is_windows_9x () == TRUE
)
543 if (g_b_init_get_sid_sub_authority_count
== 0)
545 g_b_init_get_sid_sub_authority_count
= 1;
546 hm_advapi32
= LoadLibrary ("Advapi32.dll");
547 s_pfn_Get_Sid_Sub_Authority_Count
=
548 (GetSidSubAuthorityCount_Proc
) GetProcAddress (
549 hm_advapi32
, "GetSidSubAuthorityCount");
551 if (s_pfn_Get_Sid_Sub_Authority_Count
== NULL
)
555 return (s_pfn_Get_Sid_Sub_Authority_Count (pSid
));
559 get_security_info (HANDLE handle
,
560 SE_OBJECT_TYPE ObjectType
,
561 SECURITY_INFORMATION SecurityInfo
,
566 PSECURITY_DESCRIPTOR
*ppSecurityDescriptor
)
568 static GetSecurityInfo_Proc s_pfn_Get_Security_Info
= NULL
;
569 HMODULE hm_advapi32
= NULL
;
570 if (is_windows_9x () == TRUE
)
574 if (g_b_init_get_security_info
== 0)
576 g_b_init_get_security_info
= 1;
577 hm_advapi32
= LoadLibrary ("Advapi32.dll");
578 s_pfn_Get_Security_Info
=
579 (GetSecurityInfo_Proc
) GetProcAddress (
580 hm_advapi32
, "GetSecurityInfo");
582 if (s_pfn_Get_Security_Info
== NULL
)
586 return (s_pfn_Get_Security_Info (handle
, ObjectType
, SecurityInfo
,
587 ppsidOwner
, ppsidGroup
, ppDacl
, ppSacl
,
588 ppSecurityDescriptor
));
592 get_file_security (LPCTSTR lpFileName
,
593 SECURITY_INFORMATION RequestedInformation
,
594 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
596 LPDWORD lpnLengthNeeded
)
598 static GetFileSecurity_Proc s_pfn_Get_File_Security
= NULL
;
599 HMODULE hm_advapi32
= NULL
;
600 if (is_windows_9x () == TRUE
)
604 if (g_b_init_get_file_security
== 0)
606 g_b_init_get_file_security
= 1;
607 hm_advapi32
= LoadLibrary ("Advapi32.dll");
608 s_pfn_Get_File_Security
=
609 (GetFileSecurity_Proc
) GetProcAddress (
610 hm_advapi32
, GetFileSecurity_Name
);
612 if (s_pfn_Get_File_Security
== NULL
)
616 return (s_pfn_Get_File_Security (lpFileName
, RequestedInformation
,
617 pSecurityDescriptor
, nLength
,
622 get_security_descriptor_owner (PSECURITY_DESCRIPTOR pSecurityDescriptor
,
624 LPBOOL lpbOwnerDefaulted
)
626 static GetSecurityDescriptorOwner_Proc s_pfn_Get_Security_Descriptor_Owner
= NULL
;
627 HMODULE hm_advapi32
= NULL
;
628 if (is_windows_9x () == TRUE
)
632 if (g_b_init_get_security_descriptor_owner
== 0)
634 g_b_init_get_security_descriptor_owner
= 1;
635 hm_advapi32
= LoadLibrary ("Advapi32.dll");
636 s_pfn_Get_Security_Descriptor_Owner
=
637 (GetSecurityDescriptorOwner_Proc
) GetProcAddress (
638 hm_advapi32
, "GetSecurityDescriptorOwner");
640 if (s_pfn_Get_Security_Descriptor_Owner
== NULL
)
644 return (s_pfn_Get_Security_Descriptor_Owner (pSecurityDescriptor
, pOwner
,
649 get_security_descriptor_group (PSECURITY_DESCRIPTOR pSecurityDescriptor
,
651 LPBOOL lpbGroupDefaulted
)
653 static GetSecurityDescriptorGroup_Proc s_pfn_Get_Security_Descriptor_Group
= NULL
;
654 HMODULE hm_advapi32
= NULL
;
655 if (is_windows_9x () == TRUE
)
659 if (g_b_init_get_security_descriptor_group
== 0)
661 g_b_init_get_security_descriptor_group
= 1;
662 hm_advapi32
= LoadLibrary ("Advapi32.dll");
663 s_pfn_Get_Security_Descriptor_Group
=
664 (GetSecurityDescriptorGroup_Proc
) GetProcAddress (
665 hm_advapi32
, "GetSecurityDescriptorGroup");
667 if (s_pfn_Get_Security_Descriptor_Group
== NULL
)
671 return (s_pfn_Get_Security_Descriptor_Group (pSecurityDescriptor
, pGroup
,
676 is_valid_sid (PSID sid
)
678 static IsValidSid_Proc s_pfn_Is_Valid_Sid
= NULL
;
679 HMODULE hm_advapi32
= NULL
;
680 if (is_windows_9x () == TRUE
)
684 if (g_b_init_is_valid_sid
== 0)
686 g_b_init_is_valid_sid
= 1;
687 hm_advapi32
= LoadLibrary ("Advapi32.dll");
689 (IsValidSid_Proc
) GetProcAddress (
690 hm_advapi32
, "IsValidSid");
692 if (s_pfn_Is_Valid_Sid
== NULL
)
696 return (s_pfn_Is_Valid_Sid (sid
));
700 equal_sid (PSID sid1
, PSID sid2
)
702 static EqualSid_Proc s_pfn_Equal_Sid
= NULL
;
703 HMODULE hm_advapi32
= NULL
;
704 if (is_windows_9x () == TRUE
)
708 if (g_b_init_equal_sid
== 0)
710 g_b_init_equal_sid
= 1;
711 hm_advapi32
= LoadLibrary ("Advapi32.dll");
713 (EqualSid_Proc
) GetProcAddress (
714 hm_advapi32
, "EqualSid");
716 if (s_pfn_Equal_Sid
== NULL
)
720 return (s_pfn_Equal_Sid (sid1
, sid2
));
724 get_length_sid (PSID sid
)
726 static GetLengthSid_Proc s_pfn_Get_Length_Sid
= NULL
;
727 HMODULE hm_advapi32
= NULL
;
728 if (is_windows_9x () == TRUE
)
732 if (g_b_init_get_length_sid
== 0)
734 g_b_init_get_length_sid
= 1;
735 hm_advapi32
= LoadLibrary ("Advapi32.dll");
736 s_pfn_Get_Length_Sid
=
737 (GetLengthSid_Proc
) GetProcAddress (
738 hm_advapi32
, "GetLengthSid");
740 if (s_pfn_Get_Length_Sid
== NULL
)
744 return (s_pfn_Get_Length_Sid (sid
));
748 copy_sid (DWORD destlen
, PSID dest
, PSID src
)
750 static CopySid_Proc s_pfn_Copy_Sid
= NULL
;
751 HMODULE hm_advapi32
= NULL
;
752 if (is_windows_9x () == TRUE
)
756 if (g_b_init_copy_sid
== 0)
758 g_b_init_copy_sid
= 1;
759 hm_advapi32
= LoadLibrary ("Advapi32.dll");
761 (CopySid_Proc
) GetProcAddress (
762 hm_advapi32
, "CopySid");
764 if (s_pfn_Copy_Sid
== NULL
)
768 return (s_pfn_Copy_Sid (destlen
, dest
, src
));
772 END: Wrapper functions around OpenProcessToken
773 and other functions in advapi32.dll that are only
774 supported in Windows NT / 2k / XP
778 get_native_system_info (LPSYSTEM_INFO lpSystemInfo
)
780 static GetNativeSystemInfo_Proc s_pfn_Get_Native_System_Info
= NULL
;
781 if (is_windows_9x () != TRUE
)
783 if (g_b_init_get_native_system_info
== 0)
785 g_b_init_get_native_system_info
= 1;
786 s_pfn_Get_Native_System_Info
=
787 (GetNativeSystemInfo_Proc
)GetProcAddress (GetModuleHandle ("kernel32.dll"),
788 "GetNativeSystemInfo");
790 if (s_pfn_Get_Native_System_Info
!= NULL
)
791 s_pfn_Get_Native_System_Info (lpSystemInfo
);
794 lpSystemInfo
->dwNumberOfProcessors
= -1;
798 get_system_times (LPFILETIME lpIdleTime
,
799 LPFILETIME lpKernelTime
,
800 LPFILETIME lpUserTime
)
802 static GetSystemTimes_Proc s_pfn_Get_System_times
= NULL
;
803 if (is_windows_9x () == TRUE
)
807 if (g_b_init_get_system_times
== 0)
809 g_b_init_get_system_times
= 1;
810 s_pfn_Get_System_times
=
811 (GetSystemTimes_Proc
)GetProcAddress (GetModuleHandle ("kernel32.dll"),
814 if (s_pfn_Get_System_times
== NULL
)
816 return (s_pfn_Get_System_times (lpIdleTime
, lpKernelTime
, lpUserTime
));
819 static BOOLEAN WINAPI
820 create_symbolic_link (LPTSTR lpSymlinkFilename
,
821 LPTSTR lpTargetFileName
,
824 static CreateSymbolicLink_Proc s_pfn_Create_Symbolic_Link
= NULL
;
827 if (is_windows_9x () == TRUE
)
832 if (g_b_init_create_symbolic_link
== 0)
834 g_b_init_create_symbolic_link
= 1;
836 s_pfn_Create_Symbolic_Link
=
837 (CreateSymbolicLink_Proc
)GetProcAddress (GetModuleHandle ("kernel32.dll"),
838 "CreateSymbolicLinkW");
840 s_pfn_Create_Symbolic_Link
=
841 (CreateSymbolicLink_Proc
)GetProcAddress (GetModuleHandle ("kernel32.dll"),
842 "CreateSymbolicLinkA");
845 if (s_pfn_Create_Symbolic_Link
== NULL
)
851 retval
= s_pfn_Create_Symbolic_Link (lpSymlinkFilename
, lpTargetFileName
,
853 /* If we were denied creation of the symlink, try again after
854 enabling the SeCreateSymbolicLinkPrivilege for our process. */
857 TOKEN_PRIVILEGES priv_current
;
859 if (enable_privilege (SE_CREATE_SYMBOLIC_LINK_NAME
, TRUE
, &priv_current
))
861 retval
= s_pfn_Create_Symbolic_Link (lpSymlinkFilename
, lpTargetFileName
,
863 restore_privilege (&priv_current
);
870 /* Equivalent of strerror for W32 error codes. */
872 w32_strerror (int error_no
)
874 static char buf
[500];
877 error_no
= GetLastError ();
880 if (!FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM
, NULL
,
882 0, /* choose most suitable language */
883 buf
, sizeof (buf
), NULL
))
884 sprintf (buf
, "w32 error %u", error_no
);
888 /* Return 1 if P is a valid pointer to an object of size SIZE. Return
889 0 if P is NOT a valid pointer. Return -1 if we cannot validate P.
891 This is called from alloc.c:valid_pointer_p. */
893 w32_valid_pointer_p (void *p
, int size
)
896 HANDLE h
= OpenProcess (PROCESS_VM_READ
, FALSE
, GetCurrentProcessId ());
900 unsigned char *buf
= alloca (size
);
901 int retval
= ReadProcessMemory (h
, p
, buf
, size
, &done
);
910 static char startup_dir
[MAXPATHLEN
];
912 /* Get the current working directory. */
917 if (GetCurrentDirectory (MAXPATHLEN
, dir
) > 0)
921 /* Emacs doesn't actually change directory itself, it stays in the
922 same directory where it was started. */
923 strcpy (dir
, startup_dir
);
928 /* Emulate getloadavg. */
937 /* Number of processors on this machine. */
938 static unsigned num_of_processors
;
940 /* We maintain 1-sec samples for the last 16 minutes in a circular buffer. */
941 static struct load_sample samples
[16*60];
942 static int first_idx
= -1, last_idx
= -1;
943 static int max_idx
= sizeof (samples
) / sizeof (samples
[0]);
948 int next_idx
= from
+ 1;
950 if (next_idx
>= max_idx
)
959 int prev_idx
= from
- 1;
962 prev_idx
= max_idx
- 1;
968 sample_system_load (ULONGLONG
*idle
, ULONGLONG
*kernel
, ULONGLONG
*user
)
971 FILETIME ft_idle
, ft_user
, ft_kernel
;
973 /* Initialize the number of processors on this machine. */
974 if (num_of_processors
<= 0)
976 get_native_system_info (&sysinfo
);
977 num_of_processors
= sysinfo
.dwNumberOfProcessors
;
978 if (num_of_processors
<= 0)
980 GetSystemInfo (&sysinfo
);
981 num_of_processors
= sysinfo
.dwNumberOfProcessors
;
983 if (num_of_processors
<= 0)
984 num_of_processors
= 1;
987 /* TODO: Take into account threads that are ready to run, by
988 sampling the "\System\Processor Queue Length" performance
989 counter. The code below accounts only for threads that are
992 if (get_system_times (&ft_idle
, &ft_kernel
, &ft_user
))
994 ULARGE_INTEGER uidle
, ukernel
, uuser
;
996 memcpy (&uidle
, &ft_idle
, sizeof (ft_idle
));
997 memcpy (&ukernel
, &ft_kernel
, sizeof (ft_kernel
));
998 memcpy (&uuser
, &ft_user
, sizeof (ft_user
));
999 *idle
= uidle
.QuadPart
;
1000 *kernel
= ukernel
.QuadPart
;
1001 *user
= uuser
.QuadPart
;
1011 /* Produce the load average for a given time interval, using the
1012 samples in the samples[] array. WHICH can be 0, 1, or 2, meaning
1013 1-minute, 5-minute, or 15-minute average, respectively. */
1017 double retval
= -1.0;
1020 double span
= (which
== 0 ? 1.0 : (which
== 1 ? 5.0 : 15.0)) * 60;
1021 time_t now
= samples
[last_idx
].sample_time
;
1023 if (first_idx
!= last_idx
)
1025 for (idx
= buf_prev (last_idx
); ; idx
= buf_prev (idx
))
1027 tdiff
= difftime (now
, samples
[idx
].sample_time
);
1028 if (tdiff
>= span
- 2*DBL_EPSILON
*now
)
1031 samples
[last_idx
].kernel
+ samples
[last_idx
].user
1032 - (samples
[idx
].kernel
+ samples
[idx
].user
);
1033 long double idl
= samples
[last_idx
].idle
- samples
[idx
].idle
;
1035 retval
= (1.0 - idl
/ sys
) * num_of_processors
;
1038 if (idx
== first_idx
)
1047 getloadavg (double loadavg
[], int nelem
)
1050 ULONGLONG idle
, kernel
, user
;
1051 time_t now
= time (NULL
);
1053 /* Store another sample. We ignore samples that are less than 1 sec
1055 if (difftime (now
, samples
[last_idx
].sample_time
) >= 1.0 - 2*DBL_EPSILON
*now
)
1057 sample_system_load (&idle
, &kernel
, &user
);
1058 last_idx
= buf_next (last_idx
);
1059 samples
[last_idx
].sample_time
= now
;
1060 samples
[last_idx
].idle
= idle
;
1061 samples
[last_idx
].kernel
= kernel
;
1062 samples
[last_idx
].user
= user
;
1063 /* If the buffer has more that 15 min worth of samples, discard
1065 if (first_idx
== -1)
1066 first_idx
= last_idx
;
1067 while (first_idx
!= last_idx
1068 && (difftime (now
, samples
[first_idx
].sample_time
)
1069 >= 15.0*60 + 2*DBL_EPSILON
*now
))
1070 first_idx
= buf_next (first_idx
);
1073 for (elem
= 0; elem
< nelem
; elem
++)
1075 double avg
= getavg (elem
);
1079 loadavg
[elem
] = avg
;
1085 /* Emulate getpwuid, getpwnam and others. */
1087 #define PASSWD_FIELD_SIZE 256
1089 static char dflt_passwd_name
[PASSWD_FIELD_SIZE
];
1090 static char dflt_passwd_passwd
[PASSWD_FIELD_SIZE
];
1091 static char dflt_passwd_gecos
[PASSWD_FIELD_SIZE
];
1092 static char dflt_passwd_dir
[PASSWD_FIELD_SIZE
];
1093 static char dflt_passwd_shell
[PASSWD_FIELD_SIZE
];
1095 static struct passwd dflt_passwd
=
1107 static char dflt_group_name
[GNLEN
+1];
1109 static struct group dflt_group
=
1111 /* When group information is not available, we return this as the
1112 group for all files. */
1120 return dflt_passwd
.pw_uid
;
1126 /* I could imagine arguing for checking to see whether the user is
1127 in the Administrators group and returning a UID of 0 for that
1128 case, but I don't know how wise that would be in the long run. */
1135 return dflt_passwd
.pw_gid
;
1145 getpwuid (unsigned uid
)
1147 if (uid
== dflt_passwd
.pw_uid
)
1148 return &dflt_passwd
;
1153 getgrgid (gid_t gid
)
1159 getpwnam (char *name
)
1163 pw
= getpwuid (getuid ());
1167 if (xstrcasecmp (name
, pw
->pw_name
))
1174 init_user_info (void)
1176 /* Find the user's real name by opening the process token and
1177 looking up the name associated with the user-sid in that token.
1179 Use the relative portion of the identifier authority value from
1180 the user-sid as the user id value (same for group id using the
1181 primary group sid from the process token). */
1183 char uname
[UNLEN
+1], gname
[GNLEN
+1], domain
[1025];
1184 DWORD ulength
= sizeof (uname
), dlength
= sizeof (domain
), needed
;
1185 DWORD glength
= sizeof (gname
);
1186 HANDLE token
= NULL
;
1187 SID_NAME_USE user_type
;
1188 unsigned char *buf
= NULL
;
1190 TOKEN_USER user_token
;
1191 TOKEN_PRIMARY_GROUP group_token
;
1194 result
= open_process_token (GetCurrentProcess (), TOKEN_QUERY
, &token
);
1197 result
= get_token_information (token
, TokenUser
, NULL
, 0, &blen
);
1198 if (!result
&& GetLastError () == ERROR_INSUFFICIENT_BUFFER
)
1200 buf
= xmalloc (blen
);
1201 result
= get_token_information (token
, TokenUser
,
1202 (LPVOID
)buf
, blen
, &needed
);
1205 memcpy (&user_token
, buf
, sizeof (user_token
));
1206 result
= lookup_account_sid (NULL
, user_token
.User
.Sid
,
1208 domain
, &dlength
, &user_type
);
1216 strcpy (dflt_passwd
.pw_name
, uname
);
1217 /* Determine a reasonable uid value. */
1218 if (xstrcasecmp ("administrator", uname
) == 0)
1220 dflt_passwd
.pw_uid
= 500; /* well-known Administrator uid */
1221 dflt_passwd
.pw_gid
= 513; /* well-known None gid */
1225 /* Use the last sub-authority value of the RID, the relative
1226 portion of the SID, as user/group ID. */
1227 dflt_passwd
.pw_uid
= get_rid (user_token
.User
.Sid
);
1229 /* Get group id and name. */
1230 result
= get_token_information (token
, TokenPrimaryGroup
,
1231 (LPVOID
)buf
, blen
, &needed
);
1232 if (!result
&& GetLastError () == ERROR_INSUFFICIENT_BUFFER
)
1234 buf
= xrealloc (buf
, blen
= needed
);
1235 result
= get_token_information (token
, TokenPrimaryGroup
,
1236 (LPVOID
)buf
, blen
, &needed
);
1240 memcpy (&group_token
, buf
, sizeof (group_token
));
1241 dflt_passwd
.pw_gid
= get_rid (group_token
.PrimaryGroup
);
1242 dlength
= sizeof (domain
);
1243 /* If we can get at the real Primary Group name, use that.
1244 Otherwise, the default group name was already set to
1245 "None" in globals_of_w32. */
1246 if (lookup_account_sid (NULL
, group_token
.PrimaryGroup
,
1247 gname
, &glength
, NULL
, &dlength
,
1249 strcpy (dflt_group_name
, gname
);
1252 dflt_passwd
.pw_gid
= dflt_passwd
.pw_uid
;
1255 /* If security calls are not supported (presumably because we
1256 are running under Windows 9X), fallback to this: */
1257 else if (GetUserName (uname
, &ulength
))
1259 strcpy (dflt_passwd
.pw_name
, uname
);
1260 if (xstrcasecmp ("administrator", uname
) == 0)
1261 dflt_passwd
.pw_uid
= 0;
1263 dflt_passwd
.pw_uid
= 123;
1264 dflt_passwd
.pw_gid
= dflt_passwd
.pw_uid
;
1268 strcpy (dflt_passwd
.pw_name
, "unknown");
1269 dflt_passwd
.pw_uid
= 123;
1270 dflt_passwd
.pw_gid
= 123;
1272 dflt_group
.gr_gid
= dflt_passwd
.pw_gid
;
1274 /* Ensure HOME and SHELL are defined. */
1275 if (getenv ("HOME") == NULL
)
1277 if (getenv ("SHELL") == NULL
)
1280 /* Set dir and shell from environment variables. */
1281 strcpy (dflt_passwd
.pw_dir
, getenv ("HOME"));
1282 strcpy (dflt_passwd
.pw_shell
, getenv ("SHELL"));
1286 CloseHandle (token
);
1292 /* rand () on NT gives us 15 random bits...hack together 30 bits. */
1293 return ((rand () << 15) | rand ());
1303 /* Normalize filename by converting all path separators to
1304 the specified separator. Also conditionally convert upper
1305 case path name components to lower case. */
1308 normalize_filename (register char *fp
, char path_sep
)
1313 /* Always lower-case drive letters a-z, even if the filesystem
1314 preserves case in filenames.
1315 This is so filenames can be compared by string comparison
1316 functions that are case-sensitive. Even case-preserving filesystems
1317 do not distinguish case in drive letters. */
1318 if (fp
[1] == ':' && *fp
>= 'A' && *fp
<= 'Z')
1324 if (NILP (Vw32_downcase_file_names
))
1328 if (*fp
== '/' || *fp
== '\\')
1335 sep
= path_sep
; /* convert to this path separator */
1336 elem
= fp
; /* start of current path element */
1339 if (*fp
>= 'a' && *fp
<= 'z')
1340 elem
= 0; /* don't convert this element */
1342 if (*fp
== 0 || *fp
== ':')
1344 sep
= *fp
; /* restore current separator (or 0) */
1345 *fp
= '/'; /* after conversion of this element */
1348 if (*fp
== '/' || *fp
== '\\')
1350 if (elem
&& elem
!= fp
)
1352 *fp
= 0; /* temporary end of string */
1353 _strlwr (elem
); /* while we convert to lower case */
1355 *fp
= sep
; /* convert (or restore) path separator */
1356 elem
= fp
+ 1; /* next element starts after separator */
1362 /* Destructively turn backslashes into slashes. */
1364 dostounix_filename (register char *p
)
1366 normalize_filename (p
, '/');
1369 /* Destructively turn slashes into backslashes. */
1371 unixtodos_filename (register char *p
)
1373 normalize_filename (p
, '\\');
1376 /* Remove all CR's that are followed by a LF.
1377 (From msdos.c...probably should figure out a way to share it,
1378 although this code isn't going to ever change.) */
1380 crlf_to_lf (register int n
, register unsigned char *buf
)
1382 unsigned char *np
= buf
;
1383 unsigned char *startp
= buf
;
1384 unsigned char *endp
= buf
+ n
;
1388 while (buf
< endp
- 1)
1392 if (*(++buf
) != 0x0a)
1403 /* Parse the root part of file name, if present. Return length and
1404 optionally store pointer to char after root. */
1406 parse_root (char * name
, char ** pPath
)
1408 char * start
= name
;
1413 /* find the root name of the volume if given */
1414 if (isalpha (name
[0]) && name
[1] == ':')
1416 /* skip past drive specifier */
1418 if (IS_DIRECTORY_SEP (name
[0]))
1421 else if (IS_DIRECTORY_SEP (name
[0]) && IS_DIRECTORY_SEP (name
[1]))
1427 if (IS_DIRECTORY_SEP (*name
) && --slashes
== 0)
1432 if (IS_DIRECTORY_SEP (name
[0]))
1439 return name
- start
;
1442 /* Get long base name for name; name is assumed to be absolute. */
1444 get_long_basename (char * name
, char * buf
, int size
)
1446 WIN32_FIND_DATA find_data
;
1450 /* must be valid filename, no wild cards or other invalid characters */
1451 if (_mbspbrk (name
, "*?|<>\""))
1454 dir_handle
= FindFirstFile (name
, &find_data
);
1455 if (dir_handle
!= INVALID_HANDLE_VALUE
)
1457 if ((len
= strlen (find_data
.cFileName
)) < size
)
1458 memcpy (buf
, find_data
.cFileName
, len
+ 1);
1461 FindClose (dir_handle
);
1466 /* Get long name for file, if possible (assumed to be absolute). */
1468 w32_get_long_filename (char * name
, char * buf
, int size
)
1473 char full
[ MAX_PATH
];
1476 len
= strlen (name
);
1477 if (len
>= MAX_PATH
)
1480 /* Use local copy for destructive modification. */
1481 memcpy (full
, name
, len
+1);
1482 unixtodos_filename (full
);
1484 /* Copy root part verbatim. */
1485 len
= parse_root (full
, &p
);
1486 memcpy (o
, full
, len
);
1491 while (p
!= NULL
&& *p
)
1494 p
= strchr (q
, '\\');
1496 len
= get_long_basename (full
, o
, size
);
1519 is_unc_volume (const char *filename
)
1521 const char *ptr
= filename
;
1523 if (!IS_DIRECTORY_SEP (ptr
[0]) || !IS_DIRECTORY_SEP (ptr
[1]) || !ptr
[2])
1526 if (_mbspbrk (ptr
+ 2, "*?|<>\"\\/"))
1532 /* Routines that are no-ops on NT but are defined to get Emacs to compile. */
1535 sigsetmask (int signal_mask
)
1553 sigunblock (int sig
)
1559 sigemptyset (sigset_t
*set
)
1565 sigaddset (sigset_t
*set
, int signo
)
1571 sigfillset (sigset_t
*set
)
1577 sigprocmask (int how
, const sigset_t
*set
, sigset_t
*oset
)
1583 pthread_sigmask (int how
, const sigset_t
*set
, sigset_t
*oset
)
1585 if (sigprocmask (how
, set
, oset
) == -1)
1591 setpgrp (int pid
, int gid
)
1602 #define REG_ROOT "SOFTWARE\\GNU\\Emacs"
1605 w32_get_resource (char *key
, LPDWORD lpdwtype
)
1608 HKEY hrootkey
= NULL
;
1611 /* Check both the current user and the local machine to see if
1612 we have any resources. */
1614 if (RegOpenKeyEx (HKEY_CURRENT_USER
, REG_ROOT
, 0, KEY_READ
, &hrootkey
) == ERROR_SUCCESS
)
1618 if (RegQueryValueEx (hrootkey
, key
, NULL
, NULL
, NULL
, &cbData
) == ERROR_SUCCESS
1619 && (lpvalue
= xmalloc (cbData
)) != NULL
1620 && RegQueryValueEx (hrootkey
, key
, NULL
, lpdwtype
, lpvalue
, &cbData
) == ERROR_SUCCESS
)
1622 RegCloseKey (hrootkey
);
1628 RegCloseKey (hrootkey
);
1631 if (RegOpenKeyEx (HKEY_LOCAL_MACHINE
, REG_ROOT
, 0, KEY_READ
, &hrootkey
) == ERROR_SUCCESS
)
1635 if (RegQueryValueEx (hrootkey
, key
, NULL
, NULL
, NULL
, &cbData
) == ERROR_SUCCESS
1636 && (lpvalue
= xmalloc (cbData
)) != NULL
1637 && RegQueryValueEx (hrootkey
, key
, NULL
, lpdwtype
, lpvalue
, &cbData
) == ERROR_SUCCESS
)
1639 RegCloseKey (hrootkey
);
1645 RegCloseKey (hrootkey
);
1651 char *get_emacs_configuration (void);
1654 init_environment (char ** argv
)
1656 static const char * const tempdirs
[] = {
1657 "$TMPDIR", "$TEMP", "$TMP", "c:/"
1662 const int imax
= sizeof (tempdirs
) / sizeof (tempdirs
[0]);
1664 /* Make sure they have a usable $TMPDIR. Many Emacs functions use
1665 temporary files and assume "/tmp" if $TMPDIR is unset, which
1666 will break on DOS/Windows. Refuse to work if we cannot find
1667 a directory, not even "c:/", usable for that purpose. */
1668 for (i
= 0; i
< imax
; i
++)
1670 const char *tmp
= tempdirs
[i
];
1673 tmp
= getenv (tmp
+ 1);
1674 /* Note that `access' can lie to us if the directory resides on a
1675 read-only filesystem, like CD-ROM or a write-protected floppy.
1676 The only way to be really sure is to actually create a file and
1677 see if it succeeds. But I think that's too much to ask. */
1679 /* MSVCRT's _access crashes with D_OK. */
1680 if (tmp
&& sys_access (tmp
, D_OK
) == 0)
1682 char * var
= alloca (strlen (tmp
) + 8);
1683 sprintf (var
, "TMPDIR=%s", tmp
);
1684 _putenv (strdup (var
));
1691 Fcons (build_string ("no usable temporary directories found!!"),
1693 "While setting TMPDIR: ");
1695 /* Check for environment variables and use registry settings if they
1696 don't exist. Fallback on default values where applicable. */
1701 char locale_name
[32];
1702 struct stat ignored
;
1703 char default_home
[MAX_PATH
];
1706 static const struct env_entry
1712 /* If the default value is NULL, we will use the value from the
1713 outside environment or the Registry, but will not push the
1714 variable into the Emacs environment if it is defined neither
1715 in the Registry nor in the outside environment. */
1717 {"PRELOAD_WINSOCK", NULL
},
1718 {"emacs_dir", "C:/emacs"},
1719 {"EMACSLOADPATH", NULL
},
1720 {"SHELL", "%emacs_dir%/bin/cmdproxy.exe"},
1721 {"EMACSDATA", NULL
},
1722 {"EMACSPATH", NULL
},
1729 #define N_ENV_VARS sizeof (dflt_envvars)/sizeof (dflt_envvars[0])
1731 /* We need to copy dflt_envvars[] and work on the copy because we
1732 don't want the dumped Emacs to inherit the values of
1733 environment variables we saw during dumping (which could be on
1734 a different system). The defaults above must be left intact. */
1735 struct env_entry env_vars
[N_ENV_VARS
];
1737 for (i
= 0; i
< N_ENV_VARS
; i
++)
1738 env_vars
[i
] = dflt_envvars
[i
];
1740 /* For backwards compatibility, check if a .emacs file exists in C:/
1741 If not, then we can try to default to the appdata directory under the
1742 user's profile, which is more likely to be writable. */
1743 if (stat ("C:/.emacs", &ignored
) < 0)
1745 HRESULT profile_result
;
1746 /* Dynamically load ShGetFolderPath, as it won't exist on versions
1747 of Windows 95 and NT4 that have not been updated to include
1749 ShGetFolderPath_fn get_folder_path
;
1750 get_folder_path
= (ShGetFolderPath_fn
)
1751 GetProcAddress (GetModuleHandle ("shell32.dll"), "SHGetFolderPathA");
1753 if (get_folder_path
!= NULL
)
1755 profile_result
= get_folder_path (NULL
, CSIDL_APPDATA
, NULL
,
1758 /* If we can't get the appdata dir, revert to old behavior. */
1759 if (profile_result
== S_OK
)
1761 env_vars
[0].def_value
= default_home
;
1767 /* Get default locale info and use it for LANG. */
1768 if (GetLocaleInfo (LOCALE_USER_DEFAULT
,
1769 LOCALE_SABBREVLANGNAME
| LOCALE_USE_CP_ACP
,
1770 locale_name
, sizeof (locale_name
)))
1772 for (i
= 0; i
< N_ENV_VARS
; i
++)
1774 if (strcmp (env_vars
[i
].name
, "LANG") == 0)
1776 env_vars
[i
].def_value
= locale_name
;
1782 #define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */
1784 /* Treat emacs_dir specially: set it unconditionally based on our
1788 char modname
[MAX_PATH
];
1790 if (!GetModuleFileName (NULL
, modname
, MAX_PATH
))
1792 if ((p
= strrchr (modname
, '\\')) == NULL
)
1796 if ((p
= strrchr (modname
, '\\')) && xstrcasecmp (p
, "\\bin") == 0)
1798 char buf
[SET_ENV_BUF_SIZE
];
1801 for (p
= modname
; *p
; p
++)
1802 if (*p
== '\\') *p
= '/';
1804 _snprintf (buf
, sizeof (buf
)-1, "emacs_dir=%s", modname
);
1805 _putenv (strdup (buf
));
1807 /* Handle running emacs from the build directory: src/oo-spd/i386/ */
1809 /* FIXME: should use substring of get_emacs_configuration ().
1810 But I don't think the Windows build supports alpha, mips etc
1811 anymore, so have taken the easy option for now. */
1812 else if (p
&& xstrcasecmp (p
, "\\i386") == 0)
1815 p
= strrchr (modname
, '\\');
1819 p
= strrchr (modname
, '\\');
1820 if (p
&& xstrcasecmp (p
, "\\src") == 0)
1822 char buf
[SET_ENV_BUF_SIZE
];
1825 for (p
= modname
; *p
; p
++)
1826 if (*p
== '\\') *p
= '/';
1828 _snprintf (buf
, sizeof (buf
)-1, "emacs_dir=%s", modname
);
1829 _putenv (strdup (buf
));
1835 for (i
= 0; i
< N_ENV_VARS
; i
++)
1837 if (!getenv (env_vars
[i
].name
))
1841 if ((lpval
= w32_get_resource (env_vars
[i
].name
, &dwType
)) == NULL
1842 /* Also ignore empty environment variables. */
1846 lpval
= env_vars
[i
].def_value
;
1847 dwType
= REG_EXPAND_SZ
;
1849 if (!strcmp (env_vars
[i
].name
, "HOME") && !appdata
)
1850 Vdelayed_warnings_list
1851 = Fcons (listn (CONSTYPE_HEAP
, 2,
1852 intern ("initialization"),
1853 build_string ("Setting HOME to C:\\ by default is deprecated")),
1854 Vdelayed_warnings_list
);
1859 char buf1
[SET_ENV_BUF_SIZE
], buf2
[SET_ENV_BUF_SIZE
];
1861 if (dwType
== REG_EXPAND_SZ
)
1862 ExpandEnvironmentStrings ((LPSTR
) lpval
, buf1
, sizeof (buf1
));
1863 else if (dwType
== REG_SZ
)
1864 strcpy (buf1
, lpval
);
1865 if (dwType
== REG_EXPAND_SZ
|| dwType
== REG_SZ
)
1867 _snprintf (buf2
, sizeof (buf2
)-1, "%s=%s", env_vars
[i
].name
,
1869 _putenv (strdup (buf2
));
1879 /* Rebuild system configuration to reflect invoking system. */
1880 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
1882 /* Another special case: on NT, the PATH variable is actually named
1883 "Path" although cmd.exe (perhaps NT itself) arranges for
1884 environment variable lookup and setting to be case insensitive.
1885 However, Emacs assumes a fully case sensitive environment, so we
1886 need to change "Path" to "PATH" to match the expectations of
1887 various elisp packages. We do this by the sneaky method of
1888 modifying the string in the C runtime environ entry.
1890 The same applies to COMSPEC. */
1894 for (envp
= environ
; *envp
; envp
++)
1895 if (_strnicmp (*envp
, "PATH=", 5) == 0)
1896 memcpy (*envp
, "PATH=", 5);
1897 else if (_strnicmp (*envp
, "COMSPEC=", 8) == 0)
1898 memcpy (*envp
, "COMSPEC=", 8);
1901 /* Remember the initial working directory for getwd. */
1902 /* FIXME: Do we need to resolve possible symlinks in startup_dir?
1903 Does it matter anywhere in Emacs? */
1904 if (!GetCurrentDirectory (MAXPATHLEN
, startup_dir
))
1908 static char modname
[MAX_PATH
];
1910 if (!GetModuleFileName (NULL
, modname
, MAX_PATH
))
1915 /* Determine if there is a middle mouse button, to allow parse_button
1916 to decide whether right mouse events should be mouse-2 or
1918 w32_num_mouse_buttons
= GetSystemMetrics (SM_CMOUSEBUTTONS
);
1923 /* Called from expand-file-name when default-directory is not a string. */
1926 emacs_root_dir (void)
1928 static char root_dir
[FILENAME_MAX
];
1931 p
= getenv ("emacs_dir");
1934 strcpy (root_dir
, p
);
1935 root_dir
[parse_root (root_dir
, NULL
)] = '\0';
1936 dostounix_filename (root_dir
);
1940 /* We don't have scripts to automatically determine the system configuration
1941 for Emacs before it's compiled, and we don't want to have to make the
1942 user enter it, so we define EMACS_CONFIGURATION to invoke this runtime
1946 get_emacs_configuration (void)
1948 char *arch
, *oem
, *os
;
1950 static char configuration_buffer
[32];
1952 /* Determine the processor type. */
1953 switch (get_processor_type ())
1956 #ifdef PROCESSOR_INTEL_386
1957 case PROCESSOR_INTEL_386
:
1958 case PROCESSOR_INTEL_486
:
1959 case PROCESSOR_INTEL_PENTIUM
:
1964 #ifdef PROCESSOR_MIPS_R2000
1965 case PROCESSOR_MIPS_R2000
:
1966 case PROCESSOR_MIPS_R3000
:
1967 case PROCESSOR_MIPS_R4000
:
1972 #ifdef PROCESSOR_ALPHA_21064
1973 case PROCESSOR_ALPHA_21064
:
1983 /* Use the OEM field to reflect the compiler/library combination. */
1985 #define COMPILER_NAME "msvc"
1988 #define COMPILER_NAME "mingw"
1990 #define COMPILER_NAME "unknown"
1993 oem
= COMPILER_NAME
;
1995 switch (osinfo_cache
.dwPlatformId
) {
1996 case VER_PLATFORM_WIN32_NT
:
1998 build_num
= osinfo_cache
.dwBuildNumber
;
2000 case VER_PLATFORM_WIN32_WINDOWS
:
2001 if (osinfo_cache
.dwMinorVersion
== 0) {
2006 build_num
= LOWORD (osinfo_cache
.dwBuildNumber
);
2008 case VER_PLATFORM_WIN32s
:
2009 /* Not supported, should not happen. */
2011 build_num
= LOWORD (osinfo_cache
.dwBuildNumber
);
2019 if (osinfo_cache
.dwPlatformId
== VER_PLATFORM_WIN32_NT
) {
2020 sprintf (configuration_buffer
, "%s-%s-%s%d.%d.%d", arch
, oem
, os
,
2021 get_w32_major_version (), get_w32_minor_version (), build_num
);
2023 sprintf (configuration_buffer
, "%s-%s-%s.%d", arch
, oem
, os
, build_num
);
2026 return configuration_buffer
;
2030 get_emacs_configuration_options (void)
2032 static char *options_buffer
;
2033 char cv
[32]; /* Enough for COMPILER_VERSION. */
2035 cv
, /* To be filled later. */
2039 #ifdef ENABLE_CHECKING
2040 " --enable-checking",
2042 /* configure.bat already sets USER_CFLAGS and USER_LDFLAGS
2043 with a starting space to save work here. */
2045 " --cflags", USER_CFLAGS
,
2048 " --ldflags", USER_LDFLAGS
,
2055 /* Work out the effective configure options for this build. */
2057 #define COMPILER_VERSION "--with-msvc (%d.%02d)", _MSC_VER / 100, _MSC_VER % 100
2060 #define COMPILER_VERSION "--with-gcc (%d.%d)", __GNUC__, __GNUC_MINOR__
2062 #define COMPILER_VERSION ""
2066 if (_snprintf (cv
, sizeof (cv
) - 1, COMPILER_VERSION
) < 0)
2067 return "Error: not enough space for compiler version";
2068 cv
[sizeof (cv
) - 1] = '\0';
2070 for (i
= 0; options
[i
]; i
++)
2071 size
+= strlen (options
[i
]);
2073 options_buffer
= xmalloc (size
+ 1);
2074 options_buffer
[0] = '\0';
2076 for (i
= 0; options
[i
]; i
++)
2077 strcat (options_buffer
, options
[i
]);
2079 return options_buffer
;
2083 #include <sys/timeb.h>
2085 /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */
2087 gettimeofday (struct timeval
*tv
, struct timezone
*tz
)
2092 tv
->tv_sec
= tb
.time
;
2093 tv
->tv_usec
= tb
.millitm
* 1000L;
2094 /* Implementation note: _ftime sometimes doesn't update the dstflag
2095 according to the new timezone when the system timezone is
2096 changed. We could fix that by using GetSystemTime and
2097 GetTimeZoneInformation, but that doesn't seem necessary, since
2098 Emacs always calls gettimeofday with the 2nd argument NULL (see
2099 current_emacs_time). */
2102 tz
->tz_minuteswest
= tb
.timezone
; /* minutes west of Greenwich */
2103 tz
->tz_dsttime
= tb
.dstflag
; /* type of dst correction */
2107 /* Emulate fdutimens. */
2109 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2110 TIMESPEC[0] and TIMESPEC[1], respectively.
2111 FD must be either negative -- in which case it is ignored --
2112 or a file descriptor that is open on FILE.
2113 If FD is nonnegative, then FILE can be NULL, which means
2114 use just futimes instead of utimes.
2115 If TIMESPEC is null, FAIL.
2116 Return 0 on success, -1 (setting errno) on failure. */
2119 fdutimens (int fd
, char const *file
, struct timespec
const timespec
[2])
2128 if (fd
< 0 && !file
)
2133 ut
.actime
= timespec
[0].tv_sec
;
2134 ut
.modtime
= timespec
[1].tv_sec
;
2136 return _futime (fd
, &ut
);
2138 return _utime (file
, &ut
);
2142 /* ------------------------------------------------------------------------- */
2143 /* IO support and wrapper functions for the Windows API. */
2144 /* ------------------------------------------------------------------------- */
2146 /* Place a wrapper around the MSVC version of ctime. It returns NULL
2147 on network directories, so we handle that case here.
2148 (Ulrich Leodolter, 1/11/95). */
2150 sys_ctime (const time_t *t
)
2152 char *str
= (char *) ctime (t
);
2153 return (str
? str
: "Sun Jan 01 00:00:00 1970");
2156 /* Emulate sleep...we could have done this with a define, but that
2157 would necessitate including windows.h in the files that used it.
2158 This is much easier. */
2160 sys_sleep (int seconds
)
2162 Sleep (seconds
* 1000);
2165 /* Internal MSVC functions for low-level descriptor munging */
2166 extern int __cdecl
_set_osfhnd (int fd
, long h
);
2167 extern int __cdecl
_free_osfhnd (int fd
);
2169 /* parallel array of private info on file handles */
2170 filedesc fd_info
[ MAXDESC
];
2172 typedef struct volume_info_data
{
2173 struct volume_info_data
* next
;
2175 /* time when info was obtained */
2178 /* actual volume info */
2187 /* Global referenced by various functions. */
2188 static volume_info_data volume_info
;
2190 /* Vector to indicate which drives are local and fixed (for which cached
2191 data never expires). */
2192 static BOOL fixed_drives
[26];
2194 /* Consider cached volume information to be stale if older than 10s,
2195 at least for non-local drives. Info for fixed drives is never stale. */
2196 #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' )
2197 #define VOLINFO_STILL_VALID( root_dir, info ) \
2198 ( ( isalpha (root_dir[0]) && \
2199 fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \
2200 || GetTickCount () - info->timestamp < 10000 )
2202 /* Cache support functions. */
2204 /* Simple linked list with linear search is sufficient. */
2205 static volume_info_data
*volume_cache
= NULL
;
2207 static volume_info_data
*
2208 lookup_volume_info (char * root_dir
)
2210 volume_info_data
* info
;
2212 for (info
= volume_cache
; info
; info
= info
->next
)
2213 if (xstrcasecmp (info
->root_dir
, root_dir
) == 0)
2219 add_volume_info (char * root_dir
, volume_info_data
* info
)
2221 info
->root_dir
= xstrdup (root_dir
);
2222 info
->next
= volume_cache
;
2223 volume_cache
= info
;
2227 /* Wrapper for GetVolumeInformation, which uses caching to avoid
2228 performance penalty (~2ms on 486 for local drives, 7.5ms for local
2229 cdrom drive, ~5-10ms or more for remote drives on LAN). */
2230 static volume_info_data
*
2231 GetCachedVolumeInformation (char * root_dir
)
2233 volume_info_data
* info
;
2234 char default_root
[ MAX_PATH
];
2236 /* NULL for root_dir means use root from current directory. */
2237 if (root_dir
== NULL
)
2239 if (GetCurrentDirectory (MAX_PATH
, default_root
) == 0)
2241 parse_root (default_root
, &root_dir
);
2243 root_dir
= default_root
;
2246 /* Local fixed drives can be cached permanently. Removable drives
2247 cannot be cached permanently, since the volume name and serial
2248 number (if nothing else) can change. Remote drives should be
2249 treated as if they are removable, since there is no sure way to
2250 tell whether they are or not. Also, the UNC association of drive
2251 letters mapped to remote volumes can be changed at any time (even
2252 by other processes) without notice.
2254 As a compromise, so we can benefit from caching info for remote
2255 volumes, we use a simple expiry mechanism to invalidate cache
2256 entries that are more than ten seconds old. */
2259 /* No point doing this, because WNetGetConnection is even slower than
2260 GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW,
2261 GetDriveType is about the only call of this type which does not
2262 involve network access, and so is extremely quick). */
2264 /* Map drive letter to UNC if remote. */
2265 if (isalpha (root_dir
[0]) && !fixed
[DRIVE_INDEX (root_dir
[0])])
2267 char remote_name
[ 256 ];
2268 char drive
[3] = { root_dir
[0], ':' };
2270 if (WNetGetConnection (drive
, remote_name
, sizeof (remote_name
))
2272 /* do something */ ;
2276 info
= lookup_volume_info (root_dir
);
2278 if (info
== NULL
|| ! VOLINFO_STILL_VALID (root_dir
, info
))
2286 /* Info is not cached, or is stale. */
2287 if (!GetVolumeInformation (root_dir
,
2288 name
, sizeof (name
),
2292 type
, sizeof (type
)))
2295 /* Cache the volume information for future use, overwriting existing
2296 entry if present. */
2299 info
= xmalloc (sizeof (volume_info_data
));
2300 add_volume_info (root_dir
, info
);
2308 info
->name
= xstrdup (name
);
2309 info
->serialnum
= serialnum
;
2310 info
->maxcomp
= maxcomp
;
2311 info
->flags
= flags
;
2312 info
->type
= xstrdup (type
);
2313 info
->timestamp
= GetTickCount ();
2319 /* Get information on the volume where NAME is held; set path pointer to
2320 start of pathname in NAME (past UNC header\volume header if present),
2321 if pPath is non-NULL.
2323 Note: if NAME includes symlinks, the information is for the volume
2324 of the symlink, not of its target. That's because, even though
2325 GetVolumeInformation returns information about the symlink target
2326 of its argument, we only pass the root directory to
2327 GetVolumeInformation, not the full NAME. */
2329 get_volume_info (const char * name
, const char ** pPath
)
2331 char temp
[MAX_PATH
];
2332 char *rootname
= NULL
; /* default to current volume */
2333 volume_info_data
* info
;
2338 /* Find the root name of the volume if given. */
2339 if (isalpha (name
[0]) && name
[1] == ':')
2347 else if (IS_DIRECTORY_SEP (name
[0]) && IS_DIRECTORY_SEP (name
[1]))
2354 if (IS_DIRECTORY_SEP (*name
) && --slashes
== 0)
2367 info
= GetCachedVolumeInformation (rootname
);
2370 /* Set global referenced by other functions. */
2371 volume_info
= *info
;
2377 /* Determine if volume is FAT format (ie. only supports short 8.3
2378 names); also set path pointer to start of pathname in name, if
2379 pPath is non-NULL. */
2381 is_fat_volume (const char * name
, const char ** pPath
)
2383 if (get_volume_info (name
, pPath
))
2384 return (volume_info
.maxcomp
== 12);
2388 /* Map filename to a valid 8.3 name if necessary.
2389 The result is a pointer to a static buffer, so CAVEAT EMPTOR! */
2391 map_w32_filename (const char * name
, const char ** pPath
)
2393 static char shortname
[MAX_PATH
];
2394 char * str
= shortname
;
2397 const char * save_name
= name
;
2399 if (strlen (name
) >= MAX_PATH
)
2401 /* Return a filename which will cause callers to fail. */
2402 strcpy (shortname
, "?");
2406 if (is_fat_volume (name
, (const char **)&path
)) /* truncate to 8.3 */
2408 register int left
= 8; /* maximum number of chars in part */
2409 register int extn
= 0; /* extension added? */
2410 register int dots
= 2; /* maximum number of dots allowed */
2413 *str
++ = *name
++; /* skip past UNC header */
2415 while ((c
= *name
++))
2422 *str
++ = (c
== ':' ? ':' : '\\');
2423 extn
= 0; /* reset extension flags */
2424 dots
= 2; /* max 2 dots */
2425 left
= 8; /* max length 8 for main part */
2430 /* Convert path components of the form .xxx to _xxx,
2431 but leave . and .. as they are. This allows .emacs
2432 to be read as _emacs, for example. */
2436 IS_DIRECTORY_SEP (*name
))
2451 extn
= 1; /* we've got an extension */
2452 left
= 3; /* 3 chars in extension */
2456 /* any embedded dots after the first are converted to _ */
2461 case '#': /* don't lose these, they're important */
2463 str
[-1] = c
; /* replace last character of part */
2468 *str
++ = tolower (c
); /* map to lower case (looks nicer) */
2470 dots
= 0; /* started a path component */
2479 strcpy (shortname
, name
);
2480 unixtodos_filename (shortname
);
2484 *pPath
= shortname
+ (path
- save_name
);
2490 is_exec (const char * name
)
2492 char * p
= strrchr (name
, '.');
2495 && (xstrcasecmp (p
, ".exe") == 0 ||
2496 xstrcasecmp (p
, ".com") == 0 ||
2497 xstrcasecmp (p
, ".bat") == 0 ||
2498 xstrcasecmp (p
, ".cmd") == 0));
2501 /* Emulate the Unix directory procedures opendir, closedir,
2502 and readdir. We can't use the procedures supplied in sysdep.c,
2503 so we provide them here. */
2505 struct direct dir_static
; /* simulated directory contents */
2506 static HANDLE dir_find_handle
= INVALID_HANDLE_VALUE
;
2507 static int dir_is_fat
;
2508 static char dir_pathname
[MAXPATHLEN
+1];
2509 static WIN32_FIND_DATA dir_find_data
;
2511 /* Support shares on a network resource as subdirectories of a read-only
2513 static HANDLE wnet_enum_handle
= INVALID_HANDLE_VALUE
;
2514 static HANDLE
open_unc_volume (const char *);
2515 static char *read_unc_volume (HANDLE
, char *, int);
2516 static void close_unc_volume (HANDLE
);
2519 opendir (char *filename
)
2523 /* Opening is done by FindFirstFile. However, a read is inherent to
2524 this operation, so we defer the open until read time. */
2526 if (dir_find_handle
!= INVALID_HANDLE_VALUE
)
2528 if (wnet_enum_handle
!= INVALID_HANDLE_VALUE
)
2531 /* Note: We don't support traversal of UNC volumes via symlinks.
2532 Doing so would mean punishing 99.99% of use cases by resolving
2533 all the possible symlinks in FILENAME, recursively. */
2534 if (is_unc_volume (filename
))
2536 wnet_enum_handle
= open_unc_volume (filename
);
2537 if (wnet_enum_handle
== INVALID_HANDLE_VALUE
)
2541 if (!(dirp
= (DIR *) malloc (sizeof (DIR))))
2548 strncpy (dir_pathname
, map_w32_filename (filename
, NULL
), MAXPATHLEN
);
2549 dir_pathname
[MAXPATHLEN
] = '\0';
2550 /* Note: We don't support symlinks to file names on FAT volumes.
2551 Doing so would mean punishing 99.99% of use cases by resolving
2552 all the possible symlinks in FILENAME, recursively. */
2553 dir_is_fat
= is_fat_volume (filename
, NULL
);
2559 closedir (DIR *dirp
)
2561 /* If we have a find-handle open, close it. */
2562 if (dir_find_handle
!= INVALID_HANDLE_VALUE
)
2564 FindClose (dir_find_handle
);
2565 dir_find_handle
= INVALID_HANDLE_VALUE
;
2567 else if (wnet_enum_handle
!= INVALID_HANDLE_VALUE
)
2569 close_unc_volume (wnet_enum_handle
);
2570 wnet_enum_handle
= INVALID_HANDLE_VALUE
;
2572 xfree ((char *) dirp
);
2578 int downcase
= !NILP (Vw32_downcase_file_names
);
2580 if (wnet_enum_handle
!= INVALID_HANDLE_VALUE
)
2582 if (!read_unc_volume (wnet_enum_handle
,
2583 dir_find_data
.cFileName
,
2587 /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */
2588 else if (dir_find_handle
== INVALID_HANDLE_VALUE
)
2590 char filename
[MAXNAMLEN
+ 3];
2593 strcpy (filename
, dir_pathname
);
2594 ln
= strlen (filename
) - 1;
2595 if (!IS_DIRECTORY_SEP (filename
[ln
]))
2596 strcat (filename
, "\\");
2597 strcat (filename
, "*");
2599 /* Note: No need to resolve symlinks in FILENAME, because
2600 FindFirst opens the directory that is the target of a
2602 dir_find_handle
= FindFirstFile (filename
, &dir_find_data
);
2604 if (dir_find_handle
== INVALID_HANDLE_VALUE
)
2609 if (!FindNextFile (dir_find_handle
, &dir_find_data
))
2613 /* Emacs never uses this value, so don't bother making it match
2614 value returned by stat(). */
2615 dir_static
.d_ino
= 1;
2617 strcpy (dir_static
.d_name
, dir_find_data
.cFileName
);
2619 /* If the file name in cFileName[] includes `?' characters, it means
2620 the original file name used characters that cannot be represented
2621 by the current ANSI codepage. To avoid total lossage, retrieve
2622 the short 8+3 alias of the long file name. */
2623 if (_mbspbrk (dir_static
.d_name
, "?"))
2625 strcpy (dir_static
.d_name
, dir_find_data
.cAlternateFileName
);
2626 downcase
= 1; /* 8+3 aliases are returned in all caps */
2628 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
2629 dir_static
.d_reclen
= sizeof (struct direct
) - MAXNAMLEN
+ 3 +
2630 dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
2632 /* If the file name in cFileName[] includes `?' characters, it means
2633 the original file name used characters that cannot be represented
2634 by the current ANSI codepage. To avoid total lossage, retrieve
2635 the short 8+3 alias of the long file name. */
2636 if (_mbspbrk (dir_find_data
.cFileName
, "?"))
2638 strcpy (dir_static
.d_name
, dir_find_data
.cAlternateFileName
);
2639 /* 8+3 aliases are returned in all caps, which could break
2640 various alists that look at filenames' extensions. */
2644 strcpy (dir_static
.d_name
, dir_find_data
.cFileName
);
2645 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
2647 _strlwr (dir_static
.d_name
);
2651 for (p
= dir_static
.d_name
; *p
; p
++)
2652 if (*p
>= 'a' && *p
<= 'z')
2655 _strlwr (dir_static
.d_name
);
2662 open_unc_volume (const char *path
)
2668 nr
.dwScope
= RESOURCE_GLOBALNET
;
2669 nr
.dwType
= RESOURCETYPE_DISK
;
2670 nr
.dwDisplayType
= RESOURCEDISPLAYTYPE_SERVER
;
2671 nr
.dwUsage
= RESOURCEUSAGE_CONTAINER
;
2672 nr
.lpLocalName
= NULL
;
2673 nr
.lpRemoteName
= (LPSTR
)map_w32_filename (path
, NULL
);
2674 nr
.lpComment
= NULL
;
2675 nr
.lpProvider
= NULL
;
2677 result
= WNetOpenEnum (RESOURCE_GLOBALNET
, RESOURCETYPE_DISK
,
2678 RESOURCEUSAGE_CONNECTABLE
, &nr
, &henum
);
2680 if (result
== NO_ERROR
)
2683 return INVALID_HANDLE_VALUE
;
2687 read_unc_volume (HANDLE henum
, char *readbuf
, int size
)
2691 DWORD bufsize
= 512;
2696 buffer
= alloca (bufsize
);
2697 result
= WNetEnumResource (henum
, &count
, buffer
, &bufsize
);
2698 if (result
!= NO_ERROR
)
2701 /* WNetEnumResource returns \\resource\share...skip forward to "share". */
2702 ptr
= ((LPNETRESOURCE
) buffer
)->lpRemoteName
;
2704 while (*ptr
&& !IS_DIRECTORY_SEP (*ptr
)) ptr
++;
2707 strncpy (readbuf
, ptr
, size
);
2712 close_unc_volume (HANDLE henum
)
2714 if (henum
!= INVALID_HANDLE_VALUE
)
2715 WNetCloseEnum (henum
);
2719 unc_volume_file_attributes (const char *path
)
2724 henum
= open_unc_volume (path
);
2725 if (henum
== INVALID_HANDLE_VALUE
)
2728 attrs
= FILE_ATTRIBUTE_READONLY
| FILE_ATTRIBUTE_DIRECTORY
;
2730 close_unc_volume (henum
);
2735 /* Ensure a network connection is authenticated. */
2737 logon_network_drive (const char *path
)
2739 NETRESOURCE resource
;
2740 char share
[MAX_PATH
];
2745 if (IS_DIRECTORY_SEP (path
[0]) && IS_DIRECTORY_SEP (path
[1]))
2746 drvtype
= DRIVE_REMOTE
;
2747 else if (path
[0] == '\0' || path
[1] != ':')
2748 drvtype
= GetDriveType (NULL
);
2755 drvtype
= GetDriveType (drive
);
2758 /* Only logon to networked drives. */
2759 if (drvtype
!= DRIVE_REMOTE
)
2763 strncpy (share
, path
, MAX_PATH
);
2764 /* Truncate to just server and share name. */
2765 for (i
= 2; i
< MAX_PATH
; i
++)
2767 if (IS_DIRECTORY_SEP (share
[i
]) && ++n_slashes
> 3)
2774 resource
.dwType
= RESOURCETYPE_DISK
;
2775 resource
.lpLocalName
= NULL
;
2776 resource
.lpRemoteName
= share
;
2777 resource
.lpProvider
= NULL
;
2779 WNetAddConnection2 (&resource
, NULL
, NULL
, CONNECT_INTERACTIVE
);
2782 /* Shadow some MSVC runtime functions to map requests for long filenames
2783 to reasonable short names if necessary. This was originally added to
2784 permit running Emacs on NT 3.1 on a FAT partition, which doesn't support
2788 sys_access (const char * path
, int mode
)
2792 /* MSVCRT implementation of 'access' doesn't recognize D_OK, and its
2793 newer versions blow up when passed D_OK. */
2794 path
= map_w32_filename (path
, NULL
);
2795 /* If the last element of PATH is a symlink, we need to resolve it
2796 to get the attributes of its target file. Note: any symlinks in
2797 PATH elements other than the last one are transparently resolved
2798 by GetFileAttributes below. */
2799 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) != 0)
2800 path
= chase_symlinks (path
);
2802 if ((attributes
= GetFileAttributes (path
)) == -1)
2804 DWORD w32err
= GetLastError ();
2808 case ERROR_INVALID_NAME
:
2809 case ERROR_BAD_PATHNAME
:
2810 if (is_unc_volume (path
))
2812 attributes
= unc_volume_file_attributes (path
);
2813 if (attributes
== -1)
2821 case ERROR_FILE_NOT_FOUND
:
2822 case ERROR_BAD_NETPATH
:
2831 if ((mode
& X_OK
) != 0 && !is_exec (path
))
2836 if ((mode
& W_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_READONLY
) != 0)
2841 if ((mode
& D_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
) == 0)
2850 sys_chdir (const char * path
)
2852 return _chdir (map_w32_filename (path
, NULL
));
2856 sys_chmod (const char * path
, int mode
)
2858 path
= chase_symlinks (map_w32_filename (path
, NULL
));
2859 return _chmod (path
, mode
);
2863 sys_chown (const char *path
, uid_t owner
, gid_t group
)
2865 if (sys_chmod (path
, S_IREAD
) == -1) /* check if file exists */
2871 sys_creat (const char * path
, int mode
)
2873 return _creat (map_w32_filename (path
, NULL
), mode
);
2877 sys_fopen (const char * path
, const char * mode
)
2881 const char * mode_save
= mode
;
2883 /* Force all file handles to be non-inheritable. This is necessary to
2884 ensure child processes don't unwittingly inherit handles that might
2885 prevent future file access. */
2889 else if (mode
[0] == 'w' || mode
[0] == 'a')
2890 oflag
= O_WRONLY
| O_CREAT
| O_TRUNC
;
2894 /* Only do simplistic option parsing. */
2898 oflag
&= ~(O_RDONLY
| O_WRONLY
);
2901 else if (mode
[0] == 'b')
2906 else if (mode
[0] == 't')
2913 fd
= _open (map_w32_filename (path
, NULL
), oflag
| _O_NOINHERIT
, 0644);
2917 return _fdopen (fd
, mode_save
);
2920 /* This only works on NTFS volumes, but is useful to have. */
2922 sys_link (const char * old
, const char * new)
2926 char oldname
[MAX_PATH
], newname
[MAX_PATH
];
2928 if (old
== NULL
|| new == NULL
)
2934 strcpy (oldname
, map_w32_filename (old
, NULL
));
2935 strcpy (newname
, map_w32_filename (new, NULL
));
2937 fileh
= CreateFile (oldname
, 0, 0, NULL
, OPEN_EXISTING
,
2938 FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
2939 if (fileh
!= INVALID_HANDLE_VALUE
)
2943 /* Confusingly, the "alternate" stream name field does not apply
2944 when restoring a hard link, and instead contains the actual
2945 stream data for the link (ie. the name of the link to create).
2946 The WIN32_STREAM_ID structure before the cStreamName field is
2947 the stream header, which is then immediately followed by the
2951 WIN32_STREAM_ID wid
;
2952 WCHAR wbuffer
[MAX_PATH
]; /* extra space for link name */
2955 wlen
= MultiByteToWideChar (CP_ACP
, MB_PRECOMPOSED
, newname
, -1,
2956 data
.wid
.cStreamName
, MAX_PATH
);
2959 LPVOID context
= NULL
;
2962 data
.wid
.dwStreamId
= BACKUP_LINK
;
2963 data
.wid
.dwStreamAttributes
= 0;
2964 data
.wid
.Size
.LowPart
= wlen
* sizeof (WCHAR
);
2965 data
.wid
.Size
.HighPart
= 0;
2966 data
.wid
.dwStreamNameSize
= 0;
2968 if (BackupWrite (fileh
, (LPBYTE
)&data
,
2969 offsetof (WIN32_STREAM_ID
, cStreamName
)
2970 + data
.wid
.Size
.LowPart
,
2971 &wbytes
, FALSE
, FALSE
, &context
)
2972 && BackupWrite (fileh
, NULL
, 0, &wbytes
, TRUE
, FALSE
, &context
))
2979 /* Should try mapping GetLastError to errno; for now just
2980 indicate a general error (eg. links not supported). */
2981 errno
= EINVAL
; // perhaps EMLINK?
2985 CloseHandle (fileh
);
2994 sys_mkdir (const char * path
)
2996 return _mkdir (map_w32_filename (path
, NULL
));
2999 /* Because of long name mapping issues, we need to implement this
3000 ourselves. Also, MSVC's _mktemp returns NULL when it can't generate
3001 a unique name, instead of setting the input template to an empty
3004 Standard algorithm seems to be use pid or tid with a letter on the
3005 front (in place of the 6 X's) and cycle through the letters to find a
3006 unique name. We extend that to allow any reasonable character as the
3007 first of the 6 X's. */
3009 sys_mktemp (char * template)
3013 unsigned uid
= GetCurrentThreadId ();
3014 static char first_char
[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#";
3016 if (template == NULL
)
3018 p
= template + strlen (template);
3020 /* replace up to the last 5 X's with uid in decimal */
3021 while (--p
>= template && p
[0] == 'X' && --i
>= 0)
3023 p
[0] = '0' + uid
% 10;
3027 if (i
< 0 && p
[0] == 'X')
3032 int save_errno
= errno
;
3033 p
[0] = first_char
[i
];
3034 if (sys_access (template, 0) < 0)
3040 while (++i
< sizeof (first_char
));
3043 /* Template is badly formed or else we can't generate a unique name,
3044 so return empty string */
3050 sys_open (const char * path
, int oflag
, int mode
)
3052 const char* mpath
= map_w32_filename (path
, NULL
);
3053 /* Try to open file without _O_CREAT, to be able to write to hidden
3054 and system files. Force all file handles to be
3056 int res
= _open (mpath
, (oflag
& ~_O_CREAT
) | _O_NOINHERIT
, mode
);
3059 return _open (mpath
, oflag
| _O_NOINHERIT
, mode
);
3063 sys_rename (const char * oldname
, const char * newname
)
3066 char temp
[MAX_PATH
];
3070 /* MoveFile on Windows 95 doesn't correctly change the short file name
3071 alias in a number of circumstances (it is not easy to predict when
3072 just by looking at oldname and newname, unfortunately). In these
3073 cases, renaming through a temporary name avoids the problem.
3075 A second problem on Windows 95 is that renaming through a temp name when
3076 newname is uppercase fails (the final long name ends up in
3077 lowercase, although the short alias might be uppercase) UNLESS the
3078 long temp name is not 8.3.
3080 So, on Windows 95 we always rename through a temp name, and we make sure
3081 the temp name has a long extension to ensure correct renaming. */
3083 strcpy (temp
, map_w32_filename (oldname
, NULL
));
3085 /* volume_info is set indirectly by map_w32_filename. */
3086 oldname_dev
= volume_info
.serialnum
;
3088 if (os_subtype
== OS_9X
)
3094 oldname
= map_w32_filename (oldname
, NULL
);
3095 if ((o
= strrchr (oldname
, '\\')))
3098 o
= (char *) oldname
;
3100 if ((p
= strrchr (temp
, '\\')))
3107 /* Force temp name to require a manufactured 8.3 alias - this
3108 seems to make the second rename work properly. */
3109 sprintf (p
, "_.%s.%u", o
, i
);
3111 result
= rename (oldname
, temp
);
3113 /* This loop must surely terminate! */
3114 while (result
< 0 && errno
== EEXIST
);
3119 /* Emulate Unix behavior - newname is deleted if it already exists
3120 (at least if it is a file; don't do this for directories).
3122 Since we mustn't do this if we are just changing the case of the
3123 file name (we would end up deleting the file we are trying to
3124 rename!), we let rename detect if the destination file already
3125 exists - that way we avoid the possible pitfalls of trying to
3126 determine ourselves whether two names really refer to the same
3127 file, which is not always possible in the general case. (Consider
3128 all the permutations of shared or subst'd drives, etc.) */
3130 newname
= map_w32_filename (newname
, NULL
);
3132 /* volume_info is set indirectly by map_w32_filename. */
3133 newname_dev
= volume_info
.serialnum
;
3135 result
= rename (temp
, newname
);
3139 DWORD w32err
= GetLastError ();
3142 && newname_dev
!= oldname_dev
)
3144 /* The implementation of `rename' on Windows does not return
3145 errno = EXDEV when you are moving a directory to a
3146 different storage device (ex. logical disk). It returns
3147 EACCES instead. So here we handle such situations and
3151 if ((attributes
= GetFileAttributes (temp
)) != -1
3152 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
))
3155 else if (errno
== EEXIST
)
3157 if (_chmod (newname
, 0666) != 0)
3159 if (_unlink (newname
) != 0)
3161 result
= rename (temp
, newname
);
3163 else if (w32err
== ERROR_PRIVILEGE_NOT_HELD
3164 && is_symlink (temp
))
3166 /* This is Windows prohibiting the user from creating a
3167 symlink in another place, since that requires
3177 sys_rmdir (const char * path
)
3179 return _rmdir (map_w32_filename (path
, NULL
));
3183 sys_unlink (const char * path
)
3185 path
= map_w32_filename (path
, NULL
);
3187 /* On Unix, unlink works without write permission. */
3188 _chmod (path
, 0666);
3189 return _unlink (path
);
3192 static FILETIME utc_base_ft
;
3193 static ULONGLONG utc_base
; /* In 100ns units */
3194 static int init
= 0;
3196 #define FILETIME_TO_U64(result, ft) \
3198 ULARGE_INTEGER uiTemp; \
3199 uiTemp.LowPart = (ft).dwLowDateTime; \
3200 uiTemp.HighPart = (ft).dwHighDateTime; \
3201 result = uiTemp.QuadPart; \
3205 initialize_utc_base (void)
3207 /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */
3216 st
.wMilliseconds
= 0;
3218 SystemTimeToFileTime (&st
, &utc_base_ft
);
3219 FILETIME_TO_U64 (utc_base
, utc_base_ft
);
3223 convert_time (FILETIME ft
)
3229 initialize_utc_base ();
3233 if (CompareFileTime (&ft
, &utc_base_ft
) < 0)
3236 FILETIME_TO_U64 (tmp
, ft
);
3237 return (time_t) ((tmp
- utc_base
) / 10000000L);
3241 convert_from_time_t (time_t time
, FILETIME
* pft
)
3247 initialize_utc_base ();
3251 /* time in 100ns units since 1-Jan-1601 */
3252 tmp
.QuadPart
= (ULONGLONG
) time
* 10000000L + utc_base
;
3253 pft
->dwHighDateTime
= tmp
.HighPart
;
3254 pft
->dwLowDateTime
= tmp
.LowPart
;
3258 /* No reason to keep this; faking inode values either by hashing or even
3259 using the file index from GetInformationByHandle, is not perfect and
3260 so by default Emacs doesn't use the inode values on Windows.
3261 Instead, we now determine file-truename correctly (except for
3262 possible drive aliasing etc). */
3264 /* Modified version of "PJW" algorithm (see the "Dragon" compiler book). */
3266 hashval (const unsigned char * str
)
3271 h
= (h
<< 4) + *str
++;
3277 /* Return the hash value of the canonical pathname, excluding the
3278 drive/UNC header, to get a hopefully unique inode number. */
3280 generate_inode_val (const char * name
)
3282 char fullname
[ MAX_PATH
];
3286 /* Get the truly canonical filename, if it exists. (Note: this
3287 doesn't resolve aliasing due to subst commands, or recognize hard
3289 if (!w32_get_long_filename ((char *)name
, fullname
, MAX_PATH
))
3292 parse_root (fullname
, &p
);
3293 /* Normal W32 filesystems are still case insensitive. */
3300 static PSECURITY_DESCRIPTOR
3301 get_file_security_desc_by_handle (HANDLE h
)
3303 PSECURITY_DESCRIPTOR psd
= NULL
;
3305 SECURITY_INFORMATION si
= OWNER_SECURITY_INFORMATION
3306 | GROUP_SECURITY_INFORMATION
/* | DACL_SECURITY_INFORMATION */ ;
3308 err
= get_security_info (h
, SE_FILE_OBJECT
, si
,
3309 NULL
, NULL
, NULL
, NULL
, &psd
);
3310 if (err
!= ERROR_SUCCESS
)
3316 static PSECURITY_DESCRIPTOR
3317 get_file_security_desc_by_name (const char *fname
)
3319 PSECURITY_DESCRIPTOR psd
= NULL
;
3321 SECURITY_INFORMATION si
= OWNER_SECURITY_INFORMATION
3322 | GROUP_SECURITY_INFORMATION
/* | DACL_SECURITY_INFORMATION */ ;
3324 if (!get_file_security (fname
, si
, psd
, 0, &sd_len
))
3326 err
= GetLastError ();
3327 if (err
!= ERROR_INSUFFICIENT_BUFFER
)
3331 psd
= xmalloc (sd_len
);
3332 if (!get_file_security (fname
, si
, psd
, sd_len
, &sd_len
))
3344 unsigned n_subauthorities
;
3346 /* Use the last sub-authority value of the RID, the relative
3347 portion of the SID, as user/group ID. */
3348 n_subauthorities
= *get_sid_sub_authority_count (sid
);
3349 if (n_subauthorities
< 1)
3350 return 0; /* the "World" RID */
3351 return *get_sid_sub_authority (sid
, n_subauthorities
- 1);
3354 /* Caching SID and account values for faster lokup. */
3357 # define FLEXIBLE_ARRAY_MEMBER
3359 # define FLEXIBLE_ARRAY_MEMBER 1
3364 struct w32_id
*next
;
3366 unsigned char sid
[FLEXIBLE_ARRAY_MEMBER
];
3369 static struct w32_id
*w32_idlist
;
3372 w32_cached_id (PSID sid
, unsigned *id
, char *name
)
3374 struct w32_id
*tail
, *found
;
3376 for (found
= NULL
, tail
= w32_idlist
; tail
; tail
= tail
->next
)
3378 if (equal_sid ((PSID
)tail
->sid
, sid
))
3387 strcpy (name
, found
->name
);
3395 w32_add_to_cache (PSID sid
, unsigned id
, char *name
)
3398 struct w32_id
*new_entry
;
3400 /* We don't want to leave behind stale cache from when Emacs was
3404 sid_len
= get_length_sid (sid
);
3405 new_entry
= xmalloc (offsetof (struct w32_id
, sid
) + sid_len
);
3408 new_entry
->rid
= id
;
3409 strcpy (new_entry
->name
, name
);
3410 copy_sid (sid_len
, (PSID
)new_entry
->sid
, sid
);
3411 new_entry
->next
= w32_idlist
;
3412 w32_idlist
= new_entry
;
3421 get_name_and_id (PSECURITY_DESCRIPTOR psd
, const char *fname
,
3422 unsigned *id
, char *nm
, int what
)
3425 char machine
[MAX_COMPUTERNAME_LENGTH
+1];
3427 SID_NAME_USE ignore
;
3429 DWORD name_len
= sizeof (name
);
3431 DWORD domain_len
= sizeof (domain
);
3437 result
= get_security_descriptor_owner (psd
, &sid
, &dflt
);
3438 else if (what
== GID
)
3439 result
= get_security_descriptor_group (psd
, &sid
, &dflt
);
3443 if (!result
|| !is_valid_sid (sid
))
3445 else if (!w32_cached_id (sid
, id
, nm
))
3447 /* If FNAME is a UNC, we need to lookup account on the
3448 specified machine. */
3449 if (IS_DIRECTORY_SEP (fname
[0]) && IS_DIRECTORY_SEP (fname
[1])
3450 && fname
[2] != '\0')
3455 for (s
= fname
+ 2, p
= machine
;
3456 *s
&& !IS_DIRECTORY_SEP (*s
); s
++, p
++)
3462 if (!lookup_account_sid (mp
, sid
, name
, &name_len
,
3463 domain
, &domain_len
, &ignore
)
3464 || name_len
> UNLEN
+1)
3468 *id
= get_rid (sid
);
3470 w32_add_to_cache (sid
, *id
, name
);
3477 get_file_owner_and_group (PSECURITY_DESCRIPTOR psd
,
3481 int dflt_usr
= 0, dflt_grp
= 0;
3490 if (get_name_and_id (psd
, fname
, &st
->st_uid
, st
->st_uname
, UID
))
3492 if (get_name_and_id (psd
, fname
, &st
->st_gid
, st
->st_gname
, GID
))
3495 /* Consider files to belong to current user/group, if we cannot get
3496 more accurate information. */
3499 st
->st_uid
= dflt_passwd
.pw_uid
;
3500 strcpy (st
->st_uname
, dflt_passwd
.pw_name
);
3504 st
->st_gid
= dflt_passwd
.pw_gid
;
3505 strcpy (st
->st_gname
, dflt_group
.gr_name
);
3509 /* Return non-zero if NAME is a potentially slow filesystem. */
3511 is_slow_fs (const char *name
)
3516 if (IS_DIRECTORY_SEP (name
[0]) && IS_DIRECTORY_SEP (name
[1]))
3517 devtype
= DRIVE_REMOTE
; /* assume UNC name is remote */
3518 else if (!(strlen (name
) >= 2 && IS_DEVICE_SEP (name
[1])))
3519 devtype
= GetDriveType (NULL
); /* use root of current drive */
3522 /* GetDriveType needs the root directory of the drive. */
3523 strncpy (drive_root
, name
, 2);
3524 drive_root
[2] = '\\';
3525 drive_root
[3] = '\0';
3526 devtype
= GetDriveType (drive_root
);
3528 return !(devtype
== DRIVE_FIXED
|| devtype
== DRIVE_RAMDISK
);
3531 /* MSVC stat function can't cope with UNC names and has other bugs, so
3532 replace it with our own. This also allows us to calculate consistent
3533 inode values and owner/group without hacks in the main Emacs code. */
3536 stat_worker (const char * path
, struct stat
* buf
, int follow_symlinks
)
3538 char *name
, *save_name
, *r
;
3539 WIN32_FIND_DATA wfd
;
3541 unsigned __int64 fake_inode
= 0;
3544 int rootdir
= FALSE
;
3545 PSECURITY_DESCRIPTOR psd
= NULL
;
3546 int is_a_symlink
= 0;
3547 DWORD file_flags
= FILE_FLAG_BACKUP_SEMANTICS
;
3548 DWORD access_rights
= 0;
3549 DWORD fattrs
= 0, serialnum
= 0, fs_high
= 0, fs_low
= 0, nlinks
= 1;
3550 FILETIME ctime
, atime
, wtime
;
3552 if (path
== NULL
|| buf
== NULL
)
3558 save_name
= name
= (char *) map_w32_filename (path
, &path
);
3559 /* Must be valid filename, no wild cards or other invalid
3560 characters. We use _mbspbrk to support multibyte strings that
3561 might look to strpbrk as if they included literal *, ?, and other
3562 characters mentioned below that are disallowed by Windows
3564 if (_mbspbrk (name
, "*?|<>\""))
3570 /* Remove trailing directory separator, unless name is the root
3571 directory of a drive or UNC volume in which case ensure there
3572 is a trailing separator. */
3573 len
= strlen (name
);
3574 name
= strcpy (alloca (len
+ 2), name
);
3576 /* Avoid a somewhat costly call to is_symlink if the filesystem
3577 doesn't support symlinks. */
3578 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) != 0)
3579 is_a_symlink
= is_symlink (name
);
3581 /* Plan A: Open the file and get all the necessary information via
3582 the resulting handle. This solves several issues in one blow:
3584 . retrieves attributes for the target of a symlink, if needed
3585 . gets attributes of root directories and symlinks pointing to
3586 root directories, thus avoiding the need for special-casing
3587 these and detecting them by examining the file-name format
3588 . retrieves more accurate attributes (e.g., non-zero size for
3589 some directories, esp. directories that are junction points)
3590 . correctly resolves "c:/..", "/.." and similar file names
3591 . avoids run-time penalties for 99% of use cases
3593 Plan A is always tried first, unless the user asked not to (but
3594 if the file is a symlink and we need to follow links, we try Plan
3595 A even if the user asked not to).
3597 If Plan A fails, we go to Plan B (below), where various
3598 potentially expensive techniques must be used to handle "special"
3599 files such as UNC volumes etc. */
3600 if (!(NILP (Vw32_get_true_file_attributes
)
3601 || (EQ (Vw32_get_true_file_attributes
, Qlocal
) && is_slow_fs (name
)))
3602 /* Following symlinks requires getting the info by handle. */
3603 || (is_a_symlink
&& follow_symlinks
))
3605 BY_HANDLE_FILE_INFORMATION info
;
3607 if (is_a_symlink
&& !follow_symlinks
)
3608 file_flags
|= FILE_FLAG_OPEN_REPARSE_POINT
;
3609 /* READ_CONTROL access rights are required to get security info
3610 by handle. But if the OS doesn't support security in the
3611 first place, we don't need to try. */
3612 if (is_windows_9x () != TRUE
)
3613 access_rights
|= READ_CONTROL
;
3615 fh
= CreateFile (name
, access_rights
, 0, NULL
, OPEN_EXISTING
,
3617 /* If CreateFile fails with READ_CONTROL, try again with zero as
3619 if (fh
== INVALID_HANDLE_VALUE
&& access_rights
)
3620 fh
= CreateFile (name
, 0, 0, NULL
, OPEN_EXISTING
,
3622 if (fh
== INVALID_HANDLE_VALUE
)
3623 goto no_true_file_attributes
;
3625 /* This is more accurate in terms of getting the correct number
3626 of links, but is quite slow (it is noticeable when Emacs is
3627 making a list of file name completions). */
3628 if (GetFileInformationByHandle (fh
, &info
))
3630 nlinks
= info
.nNumberOfLinks
;
3631 /* Might as well use file index to fake inode values, but this
3632 is not guaranteed to be unique unless we keep a handle open
3633 all the time (even then there are situations where it is
3634 not unique). Reputedly, there are at most 48 bits of info
3635 (on NTFS, presumably less on FAT). */
3636 fake_inode
= info
.nFileIndexHigh
;
3638 fake_inode
+= info
.nFileIndexLow
;
3639 serialnum
= info
.dwVolumeSerialNumber
;
3640 fs_high
= info
.nFileSizeHigh
;
3641 fs_low
= info
.nFileSizeLow
;
3642 ctime
= info
.ftCreationTime
;
3643 atime
= info
.ftLastAccessTime
;
3644 wtime
= info
.ftLastWriteTime
;
3645 fattrs
= info
.dwFileAttributes
;
3649 /* We don't go to Plan B here, because it's not clear that
3650 it's a good idea. The only known use case where
3651 CreateFile succeeds, but GetFileInformationByHandle fails
3652 (with ERROR_INVALID_FUNCTION) is for character devices
3653 such as NUL, PRN, etc. For these, switching to Plan B is
3654 a net loss, because we lose the character device
3655 attribute returned by GetFileType below (FindFirstFile
3656 doesn't set that bit in the attributes), and the other
3657 fields don't make sense for character devices anyway.
3658 Emacs doesn't really care for non-file entities in the
3659 context of l?stat, so neither do we. */
3661 /* w32err is assigned so one could put a breakpoint here and
3662 examine its value, when GetFileInformationByHandle
3664 DWORD w32err
= GetLastError ();
3668 case ERROR_FILE_NOT_FOUND
: /* can this ever happen? */
3674 /* Test for a symlink before testing for a directory, since
3675 symlinks to directories have the directory bit set, but we
3676 don't want them to appear as directories. */
3677 if (is_a_symlink
&& !follow_symlinks
)
3678 buf
->st_mode
= S_IFLNK
;
3679 else if (fattrs
& FILE_ATTRIBUTE_DIRECTORY
)
3680 buf
->st_mode
= S_IFDIR
;
3683 DWORD ftype
= GetFileType (fh
);
3687 case FILE_TYPE_DISK
:
3688 buf
->st_mode
= S_IFREG
;
3690 case FILE_TYPE_PIPE
:
3691 buf
->st_mode
= S_IFIFO
;
3693 case FILE_TYPE_CHAR
:
3694 case FILE_TYPE_UNKNOWN
:
3696 buf
->st_mode
= S_IFCHR
;
3699 /* We produce the fallback owner and group data, based on the
3700 current user that runs Emacs, in the following cases:
3702 . this is Windows 9X
3703 . getting security by handle failed, and we need to produce
3704 information for the target of a symlink (this is better
3705 than producing a potentially misleading info about the
3708 If getting security by handle fails, and we don't need to
3709 resolve symlinks, we try getting security by name. */
3710 if (is_windows_9x () != TRUE
)
3711 psd
= get_file_security_desc_by_handle (fh
);
3714 get_file_owner_and_group (psd
, name
, buf
);
3717 else if (is_windows_9x () == TRUE
)
3718 get_file_owner_and_group (NULL
, name
, buf
);
3719 else if (!(is_a_symlink
&& follow_symlinks
))
3721 psd
= get_file_security_desc_by_name (name
);
3722 get_file_owner_and_group (psd
, name
, buf
);
3726 get_file_owner_and_group (NULL
, name
, buf
);
3731 no_true_file_attributes
:
3732 /* Plan B: Either getting a handle on the file failed, or the
3733 caller explicitly asked us to not bother making this
3734 information more accurate.
3736 Implementation note: In Plan B, we never bother to resolve
3737 symlinks, even if we got here because we tried Plan A and
3738 failed. That's because, even if the caller asked for extra
3739 precision by setting Vw32_get_true_file_attributes to t,
3740 resolving symlinks requires acquiring a file handle to the
3741 symlink, which we already know will fail. And if the user
3742 did not ask for extra precision, resolving symlinks will fly
3743 in the face of that request, since the user then wants the
3744 lightweight version of the code. */
3745 rootdir
= (path
>= save_name
+ len
- 1
3746 && (IS_DIRECTORY_SEP (*path
) || *path
== 0));
3748 /* If name is "c:/.." or "/.." then stat "c:/" or "/". */
3749 r
= IS_DEVICE_SEP (name
[1]) ? &name
[2] : name
;
3750 if (IS_DIRECTORY_SEP (r
[0])
3751 && r
[1] == '.' && r
[2] == '.' && r
[3] == '\0')
3754 /* Note: If NAME is a symlink to the root of a UNC volume
3755 (i.e. "\\SERVER"), we will not detect that here, and we will
3756 return data about the symlink as result of FindFirst below.
3757 This is unfortunate, but that marginal use case does not
3758 justify a call to chase_symlinks which would impose a penalty
3759 on all the other use cases. (We get here for symlinks to
3760 roots of UNC volumes because CreateFile above fails for them,
3761 unlike with symlinks to root directories X:\ of drives.) */
3762 if (is_unc_volume (name
))
3764 fattrs
= unc_volume_file_attributes (name
);
3768 ctime
= atime
= wtime
= utc_base_ft
;
3772 if (!IS_DIRECTORY_SEP (name
[len
-1]))
3773 strcat (name
, "\\");
3774 if (GetDriveType (name
) < 2)
3780 fattrs
= FILE_ATTRIBUTE_DIRECTORY
;
3781 ctime
= atime
= wtime
= utc_base_ft
;
3785 if (IS_DIRECTORY_SEP (name
[len
-1]))
3788 /* (This is hacky, but helps when doing file completions on
3789 network drives.) Optimize by using information available from
3790 active readdir if possible. */
3791 len
= strlen (dir_pathname
);
3792 if (IS_DIRECTORY_SEP (dir_pathname
[len
-1]))
3794 if (dir_find_handle
!= INVALID_HANDLE_VALUE
3795 && !(is_a_symlink
&& follow_symlinks
)
3796 && strnicmp (save_name
, dir_pathname
, len
) == 0
3797 && IS_DIRECTORY_SEP (name
[len
])
3798 && xstrcasecmp (name
+ len
+ 1, dir_static
.d_name
) == 0)
3800 /* This was the last entry returned by readdir. */
3801 wfd
= dir_find_data
;
3805 logon_network_drive (name
);
3807 fh
= FindFirstFile (name
, &wfd
);
3808 if (fh
== INVALID_HANDLE_VALUE
)
3815 /* Note: if NAME is a symlink, the information we get from
3816 FindFirstFile is for the symlink, not its target. */
3817 fattrs
= wfd
.dwFileAttributes
;
3818 ctime
= wfd
.ftCreationTime
;
3819 atime
= wfd
.ftLastAccessTime
;
3820 wtime
= wfd
.ftLastWriteTime
;
3821 fs_high
= wfd
.nFileSizeHigh
;
3822 fs_low
= wfd
.nFileSizeLow
;
3825 serialnum
= volume_info
.serialnum
;
3827 if (is_a_symlink
&& !follow_symlinks
)
3828 buf
->st_mode
= S_IFLNK
;
3829 else if (fattrs
& FILE_ATTRIBUTE_DIRECTORY
)
3830 buf
->st_mode
= S_IFDIR
;
3832 buf
->st_mode
= S_IFREG
;
3834 get_file_owner_and_group (NULL
, name
, buf
);
3838 /* Not sure if there is any point in this. */
3839 if (!NILP (Vw32_generate_fake_inodes
))
3840 fake_inode
= generate_inode_val (name
);
3841 else if (fake_inode
== 0)
3843 /* For want of something better, try to make everything unique. */
3844 static DWORD gen_num
= 0;
3845 fake_inode
= ++gen_num
;
3849 buf
->st_ino
= fake_inode
;
3851 buf
->st_dev
= serialnum
;
3852 buf
->st_rdev
= serialnum
;
3854 buf
->st_size
= fs_high
;
3855 buf
->st_size
<<= 32;
3856 buf
->st_size
+= fs_low
;
3857 buf
->st_nlink
= nlinks
;
3859 /* Convert timestamps to Unix format. */
3860 buf
->st_mtime
= convert_time (wtime
);
3861 buf
->st_atime
= convert_time (atime
);
3862 if (buf
->st_atime
== 0) buf
->st_atime
= buf
->st_mtime
;
3863 buf
->st_ctime
= convert_time (ctime
);
3864 if (buf
->st_ctime
== 0) buf
->st_ctime
= buf
->st_mtime
;
3866 /* determine rwx permissions */
3867 if (is_a_symlink
&& !follow_symlinks
)
3868 permission
= S_IREAD
| S_IWRITE
| S_IEXEC
; /* Posix expectations */
3871 if (fattrs
& FILE_ATTRIBUTE_READONLY
)
3872 permission
= S_IREAD
;
3874 permission
= S_IREAD
| S_IWRITE
;
3876 if (fattrs
& FILE_ATTRIBUTE_DIRECTORY
)
3877 permission
|= S_IEXEC
;
3878 else if (is_exec (name
))
3879 permission
|= S_IEXEC
;
3882 buf
->st_mode
|= permission
| (permission
>> 3) | (permission
>> 6);
3888 stat (const char * path
, struct stat
* buf
)
3890 return stat_worker (path
, buf
, 1);
3894 lstat (const char * path
, struct stat
* buf
)
3896 return stat_worker (path
, buf
, 0);
3899 /* Provide fstat and utime as well as stat for consistent handling of
3902 fstat (int desc
, struct stat
* buf
)
3904 HANDLE fh
= (HANDLE
) _get_osfhandle (desc
);
3905 BY_HANDLE_FILE_INFORMATION info
;
3906 unsigned __int64 fake_inode
;
3909 switch (GetFileType (fh
) & ~FILE_TYPE_REMOTE
)
3911 case FILE_TYPE_DISK
:
3912 buf
->st_mode
= S_IFREG
;
3913 if (!GetFileInformationByHandle (fh
, &info
))
3919 case FILE_TYPE_PIPE
:
3920 buf
->st_mode
= S_IFIFO
;
3922 case FILE_TYPE_CHAR
:
3923 case FILE_TYPE_UNKNOWN
:
3925 buf
->st_mode
= S_IFCHR
;
3927 memset (&info
, 0, sizeof (info
));
3928 info
.dwFileAttributes
= 0;
3929 info
.ftCreationTime
= utc_base_ft
;
3930 info
.ftLastAccessTime
= utc_base_ft
;
3931 info
.ftLastWriteTime
= utc_base_ft
;
3934 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_DIRECTORY
)
3935 buf
->st_mode
= S_IFDIR
;
3937 buf
->st_nlink
= info
.nNumberOfLinks
;
3938 /* Might as well use file index to fake inode values, but this
3939 is not guaranteed to be unique unless we keep a handle open
3940 all the time (even then there are situations where it is
3941 not unique). Reputedly, there are at most 48 bits of info
3942 (on NTFS, presumably less on FAT). */
3943 fake_inode
= info
.nFileIndexHigh
;
3945 fake_inode
+= info
.nFileIndexLow
;
3947 /* MSVC defines _ino_t to be short; other libc's might not. */
3948 if (sizeof (buf
->st_ino
) == 2)
3949 buf
->st_ino
= fake_inode
^ (fake_inode
>> 16);
3951 buf
->st_ino
= fake_inode
;
3953 /* Consider files to belong to current user.
3954 FIXME: this should use GetSecurityInfo API, but it is only
3955 available for _WIN32_WINNT >= 0x501. */
3956 buf
->st_uid
= dflt_passwd
.pw_uid
;
3957 buf
->st_gid
= dflt_passwd
.pw_gid
;
3958 strcpy (buf
->st_uname
, dflt_passwd
.pw_name
);
3959 strcpy (buf
->st_gname
, dflt_group
.gr_name
);
3961 buf
->st_dev
= info
.dwVolumeSerialNumber
;
3962 buf
->st_rdev
= info
.dwVolumeSerialNumber
;
3964 buf
->st_size
= info
.nFileSizeHigh
;
3965 buf
->st_size
<<= 32;
3966 buf
->st_size
+= info
.nFileSizeLow
;
3968 /* Convert timestamps to Unix format. */
3969 buf
->st_mtime
= convert_time (info
.ftLastWriteTime
);
3970 buf
->st_atime
= convert_time (info
.ftLastAccessTime
);
3971 if (buf
->st_atime
== 0) buf
->st_atime
= buf
->st_mtime
;
3972 buf
->st_ctime
= convert_time (info
.ftCreationTime
);
3973 if (buf
->st_ctime
== 0) buf
->st_ctime
= buf
->st_mtime
;
3975 /* determine rwx permissions */
3976 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_READONLY
)
3977 permission
= S_IREAD
;
3979 permission
= S_IREAD
| S_IWRITE
;
3981 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_DIRECTORY
)
3982 permission
|= S_IEXEC
;
3985 #if 0 /* no way of knowing the filename */
3986 char * p
= strrchr (name
, '.');
3988 (xstrcasecmp (p
, ".exe") == 0 ||
3989 xstrcasecmp (p
, ".com") == 0 ||
3990 xstrcasecmp (p
, ".bat") == 0 ||
3991 xstrcasecmp (p
, ".cmd") == 0))
3992 permission
|= S_IEXEC
;
3996 buf
->st_mode
|= permission
| (permission
>> 3) | (permission
>> 6);
4002 utime (const char *name
, struct utimbuf
*times
)
4004 struct utimbuf deftime
;
4011 deftime
.modtime
= deftime
.actime
= time (NULL
);
4015 /* Need write access to set times. */
4016 fh
= CreateFile (name
, GENERIC_WRITE
, FILE_SHARE_READ
| FILE_SHARE_WRITE
,
4017 0, OPEN_EXISTING
, 0, NULL
);
4020 convert_from_time_t (times
->actime
, &atime
);
4021 convert_from_time_t (times
->modtime
, &mtime
);
4022 if (!SetFileTime (fh
, NULL
, &atime
, &mtime
))
4039 /* Symlink-related functions. */
4040 #ifndef SYMBOLIC_LINK_FLAG_DIRECTORY
4041 #define SYMBOLIC_LINK_FLAG_DIRECTORY 0x1
4045 symlink (char const *filename
, char const *linkname
)
4047 char linkfn
[MAX_PATH
], *tgtfn
;
4049 int dir_access
, filename_ends_in_slash
;
4051 /* Diagnostics follows Posix as much as possible. */
4052 if (filename
== NULL
|| linkname
== NULL
)
4062 if (strlen (filename
) > MAX_PATH
|| strlen (linkname
) > MAX_PATH
)
4064 errno
= ENAMETOOLONG
;
4068 strcpy (linkfn
, map_w32_filename (linkname
, NULL
));
4069 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) == 0)
4075 /* Note: since empty FILENAME was already rejected, we can safely
4076 refer to FILENAME[1]. */
4077 if (!(IS_DIRECTORY_SEP (filename
[0]) || IS_DEVICE_SEP (filename
[1])))
4079 /* Non-absolute FILENAME is understood as being relative to
4080 LINKNAME's directory. We need to prepend that directory to
4081 FILENAME to get correct results from sys_access below, since
4082 otherwise it will interpret FILENAME relative to the
4083 directory where the Emacs process runs. Note that
4084 make-symbolic-link always makes sure LINKNAME is a fully
4085 expanded file name. */
4087 char *p
= linkfn
+ strlen (linkfn
);
4089 while (p
> linkfn
&& !IS_ANY_SEP (p
[-1]))
4092 strncpy (tem
, linkfn
, p
- linkfn
);
4093 tem
[p
- linkfn
] = '\0';
4094 strcat (tem
, filename
);
4095 dir_access
= sys_access (tem
, D_OK
);
4098 dir_access
= sys_access (filename
, D_OK
);
4100 /* Since Windows distinguishes between symlinks to directories and
4101 to files, we provide a kludgey feature: if FILENAME doesn't
4102 exist, but ends in a slash, we create a symlink to directory. If
4103 FILENAME exists and is a directory, we always create a symlink to
4105 filename_ends_in_slash
= IS_DIRECTORY_SEP (filename
[strlen (filename
) - 1]);
4106 if (dir_access
== 0 || filename_ends_in_slash
)
4107 flags
= SYMBOLIC_LINK_FLAG_DIRECTORY
;
4109 tgtfn
= (char *)map_w32_filename (filename
, NULL
);
4110 if (filename_ends_in_slash
)
4111 tgtfn
[strlen (tgtfn
) - 1] = '\0';
4114 if (!create_symbolic_link (linkfn
, tgtfn
, flags
))
4116 /* ENOSYS is set by create_symbolic_link, when it detects that
4117 the OS doesn't support the CreateSymbolicLink API. */
4118 if (errno
!= ENOSYS
)
4120 DWORD w32err
= GetLastError ();
4124 /* ERROR_SUCCESS is sometimes returned when LINKFN and
4125 TGTFN point to the same file name, go figure. */
4127 case ERROR_FILE_EXISTS
:
4130 case ERROR_ACCESS_DENIED
:
4133 case ERROR_FILE_NOT_FOUND
:
4134 case ERROR_PATH_NOT_FOUND
:
4135 case ERROR_BAD_NETPATH
:
4136 case ERROR_INVALID_REPARSE_DATA
:
4139 case ERROR_DIRECTORY
:
4142 case ERROR_PRIVILEGE_NOT_HELD
:
4143 case ERROR_NOT_ALL_ASSIGNED
:
4146 case ERROR_DISK_FULL
:
4159 /* A quick inexpensive test of whether FILENAME identifies a file that
4160 is a symlink. Returns non-zero if it is, zero otherwise. FILENAME
4161 must already be in the normalized form returned by
4164 Note: for repeated operations on many files, it is best to test
4165 whether the underlying volume actually supports symlinks, by
4166 testing the FILE_SUPPORTS_REPARSE_POINTS bit in volume's flags, and
4167 avoid the call to this function if it doesn't. That's because the
4168 call to GetFileAttributes takes a non-negligible time, expecially
4169 on non-local or removable filesystems. See stat_worker for an
4170 example of how to do that. */
4172 is_symlink (const char *filename
)
4175 WIN32_FIND_DATA wfd
;
4178 attrs
= GetFileAttributes (filename
);
4181 DWORD w32err
= GetLastError ();
4185 case ERROR_BAD_NETPATH
: /* network share, can't be a symlink */
4187 case ERROR_ACCESS_DENIED
:
4190 case ERROR_FILE_NOT_FOUND
:
4191 case ERROR_PATH_NOT_FOUND
:
4198 if ((attrs
& FILE_ATTRIBUTE_REPARSE_POINT
) == 0)
4200 logon_network_drive (filename
);
4201 fh
= FindFirstFile (filename
, &wfd
);
4202 if (fh
== INVALID_HANDLE_VALUE
)
4205 return (wfd
.dwFileAttributes
& FILE_ATTRIBUTE_REPARSE_POINT
) != 0
4206 && (wfd
.dwReserved0
& IO_REPARSE_TAG_SYMLINK
) == IO_REPARSE_TAG_SYMLINK
;
4209 /* If NAME identifies a symbolic link, copy into BUF the file name of
4210 the symlink's target. Copy at most BUF_SIZE bytes, and do NOT
4211 null-terminate the target name, even if it fits. Return the number
4212 of bytes copied, or -1 if NAME is not a symlink or any error was
4213 encountered while resolving it. The file name copied into BUF is
4214 encoded in the current ANSI codepage. */
4216 readlink (const char *name
, char *buf
, size_t buf_size
)
4219 TOKEN_PRIVILEGES privs
;
4220 int restore_privs
= 0;
4235 path
= map_w32_filename (name
, NULL
);
4237 if (strlen (path
) > MAX_PATH
)
4239 errno
= ENAMETOOLONG
;
4244 if (is_windows_9x () == TRUE
4245 || (volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) == 0
4246 || !is_symlink (path
))
4249 errno
= EINVAL
; /* not a symlink */
4253 /* Done with simple tests, now we're in for some _real_ work. */
4254 if (enable_privilege (SE_BACKUP_NAME
, TRUE
, &privs
))
4256 /* Implementation note: From here and onward, don't return early,
4257 since that will fail to restore the original set of privileges of
4258 the calling thread. */
4260 retval
= -1; /* not too optimistic, are we? */
4262 /* Note: In the next call to CreateFile, we use zero as the 2nd
4263 argument because, when the symlink is a hidden/system file,
4264 e.g. 'C:\Users\All Users', GENERIC_READ fails with
4265 ERROR_ACCESS_DENIED. Zero seems to work just fine, both for file
4266 and directory symlinks. */
4267 sh
= CreateFile (path
, 0, 0, NULL
, OPEN_EXISTING
,
4268 FILE_FLAG_OPEN_REPARSE_POINT
| FILE_FLAG_BACKUP_SEMANTICS
,
4270 if (sh
!= INVALID_HANDLE_VALUE
)
4272 BYTE reparse_buf
[MAXIMUM_REPARSE_DATA_BUFFER_SIZE
];
4273 REPARSE_DATA_BUFFER
*reparse_data
= (REPARSE_DATA_BUFFER
*)&reparse_buf
[0];
4276 if (!DeviceIoControl (sh
, FSCTL_GET_REPARSE_POINT
, NULL
, 0,
4277 reparse_buf
, MAXIMUM_REPARSE_DATA_BUFFER_SIZE
,
4280 else if (reparse_data
->ReparseTag
!= IO_REPARSE_TAG_SYMLINK
)
4284 /* Copy the link target name, in wide characters, fro
4285 reparse_data, then convert it to multibyte encoding in
4286 the current locale's codepage. */
4288 BYTE lname
[MAX_PATH
];
4291 reparse_data
->SymbolicLinkReparseBuffer
.PrintNameLength
;
4293 reparse_data
->SymbolicLinkReparseBuffer
.PathBuffer
4294 + reparse_data
->SymbolicLinkReparseBuffer
.PrintNameOffset
/sizeof(WCHAR
);
4296 /* According to MSDN, PrintNameLength does not include the
4297 terminating null character. */
4298 lwname
= alloca ((lwname_len
+ 1) * sizeof(WCHAR
));
4299 memcpy (lwname
, lwname_src
, lwname_len
);
4300 lwname
[lwname_len
/sizeof(WCHAR
)] = 0; /* null-terminate */
4302 /* FIXME: Should we use the current file-name coding system
4303 instead of the fixed value of the ANSI codepage? */
4304 lname_len
= WideCharToMultiByte (w32_ansi_code_page
, 0, lwname
, -1,
4305 lname
, MAX_PATH
, NULL
, NULL
);
4308 /* WideCharToMultiByte failed. */
4309 DWORD w32err1
= GetLastError ();
4313 case ERROR_INSUFFICIENT_BUFFER
:
4314 errno
= ENAMETOOLONG
;
4316 case ERROR_INVALID_PARAMETER
:
4319 case ERROR_NO_UNICODE_TRANSLATION
:
4329 size_t size_to_copy
= buf_size
;
4331 BYTE
*pend
= p
+ lname_len
;
4333 /* Normalize like dostounix_filename does, but we don't
4334 want to assume that lname is null-terminated. */
4335 if (*p
&& p
[1] == ':' && *p
>= 'A' && *p
<= 'Z')
4343 /* Testing for null-terminated LNAME is paranoia:
4344 WideCharToMultiByte should always return a
4345 null-terminated string when its 4th argument is -1
4346 and its 3rd argument is null-terminated (which they
4348 if (lname
[lname_len
- 1] == '\0')
4350 if (lname_len
<= buf_size
)
4351 size_to_copy
= lname_len
;
4352 strncpy (buf
, lname
, size_to_copy
);
4354 retval
= size_to_copy
;
4361 /* CreateFile failed. */
4362 DWORD w32err2
= GetLastError ();
4366 case ERROR_FILE_NOT_FOUND
:
4367 case ERROR_PATH_NOT_FOUND
:
4370 case ERROR_ACCESS_DENIED
:
4371 case ERROR_TOO_MANY_OPEN_FILES
:
4381 restore_privilege (&privs
);
4388 /* If FILE is a symlink, return its target (stored in a static
4389 buffer); otherwise return FILE.
4391 This function repeatedly resolves symlinks in the last component of
4392 a chain of symlink file names, as in foo -> bar -> baz -> ...,
4393 until it arrives at a file whose last component is not a symlink,
4394 or some error occurs. It returns the target of the last
4395 successfully resolved symlink in the chain. If it succeeds to
4396 resolve even a single symlink, the value returned is an absolute
4397 file name with backslashes (result of GetFullPathName). By
4398 contrast, if the original FILE is returned, it is unaltered.
4400 Note: This function can set errno even if it succeeds.
4402 Implementation note: we only resolve the last portion ("basename")
4403 of the argument FILE and of each following file in the chain,
4404 disregarding any possible symlinks in its leading directories.
4405 This is because Windows system calls and library functions
4406 transparently resolve symlinks in leading directories and return
4407 correct information, as long as the basename is not a symlink. */
4409 chase_symlinks (const char *file
)
4411 static char target
[MAX_PATH
];
4412 char link
[MAX_PATH
];
4413 ssize_t res
, link_len
;
4416 if (is_windows_9x () == TRUE
|| !is_symlink (file
))
4417 return (char *)file
;
4419 if ((link_len
= GetFullPathName (file
, MAX_PATH
, link
, NULL
)) == 0)
4420 return (char *)file
;
4425 /* Remove trailing slashes, as we want to resolve the last
4426 non-trivial part of the link name. */
4427 while (link_len
> 3 && IS_DIRECTORY_SEP (link
[link_len
-1]))
4428 link
[link_len
--] = '\0';
4430 res
= readlink (link
, target
, MAX_PATH
);
4434 if (!(IS_DEVICE_SEP (target
[1])
4435 || (IS_DIRECTORY_SEP (target
[0]) && IS_DIRECTORY_SEP (target
[1]))))
4437 /* Target is relative. Append it to the directory part of
4438 the symlink, then copy the result back to target. */
4439 char *p
= link
+ link_len
;
4441 while (p
> link
&& !IS_ANY_SEP (p
[-1]))
4444 strcpy (target
, link
);
4446 /* Resolve any "." and ".." to get a fully-qualified file name
4448 link_len
= GetFullPathName (target
, MAX_PATH
, link
, NULL
);
4450 } while (res
> 0 && link_len
> 0 && ++loop_count
<= 100);
4452 if (loop_count
> 100)
4455 if (target
[0] == '\0') /* not a single call to readlink succeeded */
4456 return (char *)file
;
4460 /* MS-Windows version of careadlinkat (cf. ../lib/careadlinkat.c). We
4461 have a fixed max size for file names, so we don't need the kind of
4462 alloc/malloc/realloc dance the gnulib version does. We also don't
4463 support FD-relative symlinks. */
4465 careadlinkat (int fd
, char const *filename
,
4466 char *buffer
, size_t buffer_size
,
4467 struct allocator
const *alloc
,
4468 ssize_t (*preadlinkat
) (int, char const *, char *, size_t))
4470 char linkname
[MAX_PATH
];
4479 link_size
= preadlinkat (fd
, filename
, linkname
, sizeof(linkname
));
4483 char *retval
= buffer
;
4485 linkname
[link_size
++] = '\0';
4486 if (link_size
> buffer_size
)
4487 retval
= (char *)(alloc
? alloc
->allocate
: xmalloc
) (link_size
);
4489 memcpy (retval
, linkname
, link_size
);
4497 careadlinkatcwd (int fd
, char const *filename
, char *buffer
,
4501 return readlink (filename
, buffer
, buffer_size
);
4505 /* Support for browsing other processes and their attributes. See
4506 process.c for the Lisp bindings. */
4508 /* Helper wrapper functions. */
4510 static HANDLE WINAPI
4511 create_toolhelp32_snapshot (DWORD Flags
, DWORD Ignored
)
4513 static CreateToolhelp32Snapshot_Proc s_pfn_Create_Toolhelp32_Snapshot
= NULL
;
4515 if (g_b_init_create_toolhelp32_snapshot
== 0)
4517 g_b_init_create_toolhelp32_snapshot
= 1;
4518 s_pfn_Create_Toolhelp32_Snapshot
= (CreateToolhelp32Snapshot_Proc
)
4519 GetProcAddress (GetModuleHandle ("kernel32.dll"),
4520 "CreateToolhelp32Snapshot");
4522 if (s_pfn_Create_Toolhelp32_Snapshot
== NULL
)
4524 return INVALID_HANDLE_VALUE
;
4526 return (s_pfn_Create_Toolhelp32_Snapshot (Flags
, Ignored
));
4530 process32_first (HANDLE hSnapshot
, LPPROCESSENTRY32 lppe
)
4532 static Process32First_Proc s_pfn_Process32_First
= NULL
;
4534 if (g_b_init_process32_first
== 0)
4536 g_b_init_process32_first
= 1;
4537 s_pfn_Process32_First
= (Process32First_Proc
)
4538 GetProcAddress (GetModuleHandle ("kernel32.dll"),
4541 if (s_pfn_Process32_First
== NULL
)
4545 return (s_pfn_Process32_First (hSnapshot
, lppe
));
4549 process32_next (HANDLE hSnapshot
, LPPROCESSENTRY32 lppe
)
4551 static Process32Next_Proc s_pfn_Process32_Next
= NULL
;
4553 if (g_b_init_process32_next
== 0)
4555 g_b_init_process32_next
= 1;
4556 s_pfn_Process32_Next
= (Process32Next_Proc
)
4557 GetProcAddress (GetModuleHandle ("kernel32.dll"),
4560 if (s_pfn_Process32_Next
== NULL
)
4564 return (s_pfn_Process32_Next (hSnapshot
, lppe
));
4568 open_thread_token (HANDLE ThreadHandle
,
4569 DWORD DesiredAccess
,
4571 PHANDLE TokenHandle
)
4573 static OpenThreadToken_Proc s_pfn_Open_Thread_Token
= NULL
;
4574 HMODULE hm_advapi32
= NULL
;
4575 if (is_windows_9x () == TRUE
)
4577 SetLastError (ERROR_NOT_SUPPORTED
);
4580 if (g_b_init_open_thread_token
== 0)
4582 g_b_init_open_thread_token
= 1;
4583 hm_advapi32
= LoadLibrary ("Advapi32.dll");
4584 s_pfn_Open_Thread_Token
=
4585 (OpenThreadToken_Proc
) GetProcAddress (hm_advapi32
, "OpenThreadToken");
4587 if (s_pfn_Open_Thread_Token
== NULL
)
4589 SetLastError (ERROR_NOT_SUPPORTED
);
4593 s_pfn_Open_Thread_Token (
4602 impersonate_self (SECURITY_IMPERSONATION_LEVEL ImpersonationLevel
)
4604 static ImpersonateSelf_Proc s_pfn_Impersonate_Self
= NULL
;
4605 HMODULE hm_advapi32
= NULL
;
4606 if (is_windows_9x () == TRUE
)
4610 if (g_b_init_impersonate_self
== 0)
4612 g_b_init_impersonate_self
= 1;
4613 hm_advapi32
= LoadLibrary ("Advapi32.dll");
4614 s_pfn_Impersonate_Self
=
4615 (ImpersonateSelf_Proc
) GetProcAddress (hm_advapi32
, "ImpersonateSelf");
4617 if (s_pfn_Impersonate_Self
== NULL
)
4621 return s_pfn_Impersonate_Self (ImpersonationLevel
);
4625 revert_to_self (void)
4627 static RevertToSelf_Proc s_pfn_Revert_To_Self
= NULL
;
4628 HMODULE hm_advapi32
= NULL
;
4629 if (is_windows_9x () == TRUE
)
4633 if (g_b_init_revert_to_self
== 0)
4635 g_b_init_revert_to_self
= 1;
4636 hm_advapi32
= LoadLibrary ("Advapi32.dll");
4637 s_pfn_Revert_To_Self
=
4638 (RevertToSelf_Proc
) GetProcAddress (hm_advapi32
, "RevertToSelf");
4640 if (s_pfn_Revert_To_Self
== NULL
)
4644 return s_pfn_Revert_To_Self ();
4648 get_process_memory_info (HANDLE h_proc
,
4649 PPROCESS_MEMORY_COUNTERS mem_counters
,
4652 static GetProcessMemoryInfo_Proc s_pfn_Get_Process_Memory_Info
= NULL
;
4653 HMODULE hm_psapi
= NULL
;
4654 if (is_windows_9x () == TRUE
)
4658 if (g_b_init_get_process_memory_info
== 0)
4660 g_b_init_get_process_memory_info
= 1;
4661 hm_psapi
= LoadLibrary ("Psapi.dll");
4663 s_pfn_Get_Process_Memory_Info
= (GetProcessMemoryInfo_Proc
)
4664 GetProcAddress (hm_psapi
, "GetProcessMemoryInfo");
4666 if (s_pfn_Get_Process_Memory_Info
== NULL
)
4670 return s_pfn_Get_Process_Memory_Info (h_proc
, mem_counters
, bufsize
);
4674 get_process_working_set_size (HANDLE h_proc
,
4678 static GetProcessWorkingSetSize_Proc
4679 s_pfn_Get_Process_Working_Set_Size
= NULL
;
4681 if (is_windows_9x () == TRUE
)
4685 if (g_b_init_get_process_working_set_size
== 0)
4687 g_b_init_get_process_working_set_size
= 1;
4688 s_pfn_Get_Process_Working_Set_Size
= (GetProcessWorkingSetSize_Proc
)
4689 GetProcAddress (GetModuleHandle ("kernel32.dll"),
4690 "GetProcessWorkingSetSize");
4692 if (s_pfn_Get_Process_Working_Set_Size
== NULL
)
4696 return s_pfn_Get_Process_Working_Set_Size (h_proc
, minrss
, maxrss
);
4700 global_memory_status (MEMORYSTATUS
*buf
)
4702 static GlobalMemoryStatus_Proc s_pfn_Global_Memory_Status
= NULL
;
4704 if (is_windows_9x () == TRUE
)
4708 if (g_b_init_global_memory_status
== 0)
4710 g_b_init_global_memory_status
= 1;
4711 s_pfn_Global_Memory_Status
= (GlobalMemoryStatus_Proc
)
4712 GetProcAddress (GetModuleHandle ("kernel32.dll"),
4713 "GlobalMemoryStatus");
4715 if (s_pfn_Global_Memory_Status
== NULL
)
4719 return s_pfn_Global_Memory_Status (buf
);
4723 global_memory_status_ex (MEMORY_STATUS_EX
*buf
)
4725 static GlobalMemoryStatusEx_Proc s_pfn_Global_Memory_Status_Ex
= NULL
;
4727 if (is_windows_9x () == TRUE
)
4731 if (g_b_init_global_memory_status_ex
== 0)
4733 g_b_init_global_memory_status_ex
= 1;
4734 s_pfn_Global_Memory_Status_Ex
= (GlobalMemoryStatusEx_Proc
)
4735 GetProcAddress (GetModuleHandle ("kernel32.dll"),
4736 "GlobalMemoryStatusEx");
4738 if (s_pfn_Global_Memory_Status_Ex
== NULL
)
4742 return s_pfn_Global_Memory_Status_Ex (buf
);
4746 list_system_processes (void)
4748 struct gcpro gcpro1
;
4749 Lisp_Object proclist
= Qnil
;
4752 h_snapshot
= create_toolhelp32_snapshot (TH32CS_SNAPPROCESS
, 0);
4754 if (h_snapshot
!= INVALID_HANDLE_VALUE
)
4756 PROCESSENTRY32 proc_entry
;
4762 proc_entry
.dwSize
= sizeof (PROCESSENTRY32
);
4763 for (res
= process32_first (h_snapshot
, &proc_entry
); res
;
4764 res
= process32_next (h_snapshot
, &proc_entry
))
4766 proc_id
= proc_entry
.th32ProcessID
;
4767 proclist
= Fcons (make_fixnum_or_float (proc_id
), proclist
);
4770 CloseHandle (h_snapshot
);
4772 proclist
= Fnreverse (proclist
);
4779 enable_privilege (LPCTSTR priv_name
, BOOL enable_p
, TOKEN_PRIVILEGES
*old_priv
)
4781 TOKEN_PRIVILEGES priv
;
4782 DWORD priv_size
= sizeof (priv
);
4783 DWORD opriv_size
= sizeof (*old_priv
);
4784 HANDLE h_token
= NULL
;
4785 HANDLE h_thread
= GetCurrentThread ();
4789 res
= open_thread_token (h_thread
,
4790 TOKEN_QUERY
| TOKEN_ADJUST_PRIVILEGES
,
4792 if (!res
&& GetLastError () == ERROR_NO_TOKEN
)
4794 if (impersonate_self (SecurityImpersonation
))
4795 res
= open_thread_token (h_thread
,
4796 TOKEN_QUERY
| TOKEN_ADJUST_PRIVILEGES
,
4801 priv
.PrivilegeCount
= 1;
4802 priv
.Privileges
[0].Attributes
= enable_p
? SE_PRIVILEGE_ENABLED
: 0;
4803 LookupPrivilegeValue (NULL
, priv_name
, &priv
.Privileges
[0].Luid
);
4804 if (AdjustTokenPrivileges (h_token
, FALSE
, &priv
, priv_size
,
4805 old_priv
, &opriv_size
)
4806 && GetLastError () != ERROR_NOT_ALL_ASSIGNED
)
4810 CloseHandle (h_token
);
4816 restore_privilege (TOKEN_PRIVILEGES
*priv
)
4818 DWORD priv_size
= sizeof (*priv
);
4819 HANDLE h_token
= NULL
;
4822 if (open_thread_token (GetCurrentThread (),
4823 TOKEN_QUERY
| TOKEN_ADJUST_PRIVILEGES
,
4826 if (AdjustTokenPrivileges (h_token
, FALSE
, priv
, priv_size
, NULL
, NULL
)
4827 && GetLastError () != ERROR_NOT_ALL_ASSIGNED
)
4831 CloseHandle (h_token
);
4837 ltime (ULONGLONG time_100ns
)
4839 ULONGLONG time_sec
= time_100ns
/ 10000000;
4840 int subsec
= time_100ns
% 10000000;
4841 return list4 (make_number (time_sec
>> 16),
4842 make_number (time_sec
& 0xffff),
4843 make_number (subsec
/ 10),
4844 make_number (subsec
% 10 * 100000));
4847 #define U64_TO_LISP_TIME(time) ltime (time)
4850 process_times (HANDLE h_proc
, Lisp_Object
*ctime
, Lisp_Object
*etime
,
4851 Lisp_Object
*stime
, Lisp_Object
*utime
, Lisp_Object
*ttime
,
4854 FILETIME ft_creation
, ft_exit
, ft_kernel
, ft_user
, ft_current
;
4855 ULONGLONG tem1
, tem2
, tem3
, tem
;
4858 || !get_process_times_fn
4859 || !(*get_process_times_fn
) (h_proc
, &ft_creation
, &ft_exit
,
4860 &ft_kernel
, &ft_user
))
4863 GetSystemTimeAsFileTime (&ft_current
);
4865 FILETIME_TO_U64 (tem1
, ft_kernel
);
4866 *stime
= U64_TO_LISP_TIME (tem1
);
4868 FILETIME_TO_U64 (tem2
, ft_user
);
4869 *utime
= U64_TO_LISP_TIME (tem2
);
4872 *ttime
= U64_TO_LISP_TIME (tem3
);
4874 FILETIME_TO_U64 (tem
, ft_creation
);
4875 /* Process no 4 (System) returns zero creation time. */
4878 *ctime
= U64_TO_LISP_TIME (tem
);
4882 FILETIME_TO_U64 (tem3
, ft_current
);
4883 tem
= (tem3
- utc_base
) - tem
;
4885 *etime
= U64_TO_LISP_TIME (tem
);
4889 *pcpu
= 100.0 * (tem1
+ tem2
) / tem
;
4900 system_process_attributes (Lisp_Object pid
)
4902 struct gcpro gcpro1
, gcpro2
, gcpro3
;
4903 Lisp_Object attrs
= Qnil
;
4904 Lisp_Object cmd_str
, decoded_cmd
, tem
;
4905 HANDLE h_snapshot
, h_proc
;
4908 char uname
[UNLEN
+1], gname
[GNLEN
+1], domain
[1025];
4909 DWORD ulength
= sizeof (uname
), dlength
= sizeof (domain
), needed
;
4910 DWORD glength
= sizeof (gname
);
4911 HANDLE token
= NULL
;
4912 SID_NAME_USE user_type
;
4913 unsigned char *buf
= NULL
;
4915 TOKEN_USER user_token
;
4916 TOKEN_PRIMARY_GROUP group_token
;
4919 PROCESS_MEMORY_COUNTERS mem
;
4920 PROCESS_MEMORY_COUNTERS_EX mem_ex
;
4921 DWORD minrss
, maxrss
;
4923 MEMORY_STATUS_EX memstex
;
4924 double totphys
= 0.0;
4925 Lisp_Object ctime
, stime
, utime
, etime
, ttime
;
4927 BOOL result
= FALSE
;
4929 CHECK_NUMBER_OR_FLOAT (pid
);
4930 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
4932 h_snapshot
= create_toolhelp32_snapshot (TH32CS_SNAPPROCESS
, 0);
4934 GCPRO3 (attrs
, decoded_cmd
, tem
);
4936 if (h_snapshot
!= INVALID_HANDLE_VALUE
)
4941 pe
.dwSize
= sizeof (PROCESSENTRY32
);
4942 for (res
= process32_first (h_snapshot
, &pe
); res
;
4943 res
= process32_next (h_snapshot
, &pe
))
4945 if (proc_id
== pe
.th32ProcessID
)
4948 decoded_cmd
= build_string ("Idle");
4951 /* Decode the command name from locale-specific
4953 cmd_str
= make_unibyte_string (pe
.szExeFile
,
4954 strlen (pe
.szExeFile
));
4956 code_convert_string_norecord (cmd_str
,
4957 Vlocale_coding_system
, 0);
4959 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
4960 attrs
= Fcons (Fcons (Qppid
,
4961 make_fixnum_or_float (pe
.th32ParentProcessID
)),
4963 attrs
= Fcons (Fcons (Qpri
, make_number (pe
.pcPriClassBase
)),
4965 attrs
= Fcons (Fcons (Qthcount
,
4966 make_fixnum_or_float (pe
.cntThreads
)),
4973 CloseHandle (h_snapshot
);
4982 h_proc
= OpenProcess (PROCESS_QUERY_INFORMATION
| PROCESS_VM_READ
,
4984 /* If we were denied a handle to the process, try again after
4985 enabling the SeDebugPrivilege in our process. */
4988 TOKEN_PRIVILEGES priv_current
;
4990 if (enable_privilege (SE_DEBUG_NAME
, TRUE
, &priv_current
))
4992 h_proc
= OpenProcess (PROCESS_QUERY_INFORMATION
| PROCESS_VM_READ
,
4994 restore_privilege (&priv_current
);
5000 result
= open_process_token (h_proc
, TOKEN_QUERY
, &token
);
5003 result
= get_token_information (token
, TokenUser
, NULL
, 0, &blen
);
5004 if (!result
&& GetLastError () == ERROR_INSUFFICIENT_BUFFER
)
5006 buf
= xmalloc (blen
);
5007 result
= get_token_information (token
, TokenUser
,
5008 (LPVOID
)buf
, blen
, &needed
);
5011 memcpy (&user_token
, buf
, sizeof (user_token
));
5012 if (!w32_cached_id (user_token
.User
.Sid
, &euid
, uname
))
5014 euid
= get_rid (user_token
.User
.Sid
);
5015 result
= lookup_account_sid (NULL
, user_token
.User
.Sid
,
5020 w32_add_to_cache (user_token
.User
.Sid
, euid
, uname
);
5023 strcpy (uname
, "unknown");
5027 ulength
= strlen (uname
);
5033 /* Determine a reasonable euid and gid values. */
5034 if (xstrcasecmp ("administrator", uname
) == 0)
5036 euid
= 500; /* well-known Administrator uid */
5037 egid
= 513; /* well-known None gid */
5041 /* Get group id and name. */
5042 result
= get_token_information (token
, TokenPrimaryGroup
,
5043 (LPVOID
)buf
, blen
, &needed
);
5044 if (!result
&& GetLastError () == ERROR_INSUFFICIENT_BUFFER
)
5046 buf
= xrealloc (buf
, blen
= needed
);
5047 result
= get_token_information (token
, TokenPrimaryGroup
,
5048 (LPVOID
)buf
, blen
, &needed
);
5052 memcpy (&group_token
, buf
, sizeof (group_token
));
5053 if (!w32_cached_id (group_token
.PrimaryGroup
, &egid
, gname
))
5055 egid
= get_rid (group_token
.PrimaryGroup
);
5056 dlength
= sizeof (domain
);
5058 lookup_account_sid (NULL
, group_token
.PrimaryGroup
,
5059 gname
, &glength
, NULL
, &dlength
,
5062 w32_add_to_cache (group_token
.PrimaryGroup
,
5066 strcpy (gname
, "None");
5070 glength
= strlen (gname
);
5078 if (!is_windows_9x ())
5080 /* We couldn't open the process token, presumably because of
5081 insufficient access rights. Assume this process is run
5083 strcpy (uname
, "SYSTEM");
5084 strcpy (gname
, "None");
5085 euid
= 18; /* SYSTEM */
5086 egid
= 513; /* None */
5087 glength
= strlen (gname
);
5088 ulength
= strlen (uname
);
5090 /* If we are running under Windows 9X, where security calls are
5091 not supported, we assume all processes are run by the current
5093 else if (GetUserName (uname
, &ulength
))
5095 if (xstrcasecmp ("administrator", uname
) == 0)
5100 strcpy (gname
, "None");
5101 glength
= strlen (gname
);
5102 ulength
= strlen (uname
);
5108 strcpy (uname
, "administrator");
5109 ulength
= strlen (uname
);
5110 strcpy (gname
, "None");
5111 glength
= strlen (gname
);
5114 CloseHandle (token
);
5117 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (euid
)), attrs
);
5118 tem
= make_unibyte_string (uname
, ulength
);
5119 attrs
= Fcons (Fcons (Quser
,
5120 code_convert_string_norecord (tem
, Vlocale_coding_system
, 0)),
5122 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (egid
)), attrs
);
5123 tem
= make_unibyte_string (gname
, glength
);
5124 attrs
= Fcons (Fcons (Qgroup
,
5125 code_convert_string_norecord (tem
, Vlocale_coding_system
, 0)),
5128 if (global_memory_status_ex (&memstex
))
5129 #if __GNUC__ || (defined (_MSC_VER) && _MSC_VER >= 1300)
5130 totphys
= memstex
.ullTotalPhys
/ 1024.0;
5132 /* Visual Studio 6 cannot convert an unsigned __int64 type to
5133 double, so we need to do this for it... */
5135 DWORD tot_hi
= memstex
.ullTotalPhys
>> 32;
5136 DWORD tot_md
= (memstex
.ullTotalPhys
& 0x00000000ffffffff) >> 10;
5137 DWORD tot_lo
= memstex
.ullTotalPhys
% 1024;
5139 totphys
= tot_hi
* 4194304.0 + tot_md
+ tot_lo
/ 1024.0;
5141 #endif /* __GNUC__ || _MSC_VER >= 1300 */
5142 else if (global_memory_status (&memst
))
5143 totphys
= memst
.dwTotalPhys
/ 1024.0;
5146 && get_process_memory_info (h_proc
, (PROCESS_MEMORY_COUNTERS
*)&mem_ex
,
5149 DWORD rss
= mem_ex
.WorkingSetSize
/ 1024;
5151 attrs
= Fcons (Fcons (Qmajflt
,
5152 make_fixnum_or_float (mem_ex
.PageFaultCount
)),
5154 attrs
= Fcons (Fcons (Qvsize
,
5155 make_fixnum_or_float (mem_ex
.PrivateUsage
/ 1024)),
5157 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (rss
)), attrs
);
5159 attrs
= Fcons (Fcons (Qpmem
, make_float (100. * rss
/ totphys
)), attrs
);
5162 && get_process_memory_info (h_proc
, &mem
, sizeof (mem
)))
5164 DWORD rss
= mem_ex
.WorkingSetSize
/ 1024;
5166 attrs
= Fcons (Fcons (Qmajflt
,
5167 make_fixnum_or_float (mem
.PageFaultCount
)),
5169 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (rss
)), attrs
);
5171 attrs
= Fcons (Fcons (Qpmem
, make_float (100. * rss
/ totphys
)), attrs
);
5174 && get_process_working_set_size (h_proc
, &minrss
, &maxrss
))
5176 DWORD rss
= maxrss
/ 1024;
5178 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (maxrss
/ 1024)), attrs
);
5180 attrs
= Fcons (Fcons (Qpmem
, make_float (100. * rss
/ totphys
)), attrs
);
5183 if (process_times (h_proc
, &ctime
, &etime
, &stime
, &utime
, &ttime
, &pcpu
))
5185 attrs
= Fcons (Fcons (Qutime
, utime
), attrs
);
5186 attrs
= Fcons (Fcons (Qstime
, stime
), attrs
);
5187 attrs
= Fcons (Fcons (Qtime
, ttime
), attrs
);
5188 attrs
= Fcons (Fcons (Qstart
, ctime
), attrs
);
5189 attrs
= Fcons (Fcons (Qetime
, etime
), attrs
);
5190 attrs
= Fcons (Fcons (Qpcpu
, make_float (pcpu
)), attrs
);
5193 /* FIXME: Retrieve command line by walking the PEB of the process. */
5196 CloseHandle (h_proc
);
5202 /* Wrappers for winsock functions to map between our file descriptors
5203 and winsock's handles; also set h_errno for convenience.
5205 To allow Emacs to run on systems which don't have winsock support
5206 installed, we dynamically link to winsock on startup if present, and
5207 otherwise provide the minimum necessary functionality
5208 (eg. gethostname). */
5210 /* function pointers for relevant socket functions */
5211 int (PASCAL
*pfn_WSAStartup
) (WORD wVersionRequired
, LPWSADATA lpWSAData
);
5212 void (PASCAL
*pfn_WSASetLastError
) (int iError
);
5213 int (PASCAL
*pfn_WSAGetLastError
) (void);
5214 int (PASCAL
*pfn_WSAEventSelect
) (SOCKET s
, HANDLE hEventObject
, long lNetworkEvents
);
5215 HANDLE (PASCAL
*pfn_WSACreateEvent
) (void);
5216 int (PASCAL
*pfn_WSACloseEvent
) (HANDLE hEvent
);
5217 int (PASCAL
*pfn_socket
) (int af
, int type
, int protocol
);
5218 int (PASCAL
*pfn_bind
) (SOCKET s
, const struct sockaddr
*addr
, int namelen
);
5219 int (PASCAL
*pfn_connect
) (SOCKET s
, const struct sockaddr
*addr
, int namelen
);
5220 int (PASCAL
*pfn_ioctlsocket
) (SOCKET s
, long cmd
, u_long
*argp
);
5221 int (PASCAL
*pfn_recv
) (SOCKET s
, char * buf
, int len
, int flags
);
5222 int (PASCAL
*pfn_send
) (SOCKET s
, const char * buf
, int len
, int flags
);
5223 int (PASCAL
*pfn_closesocket
) (SOCKET s
);
5224 int (PASCAL
*pfn_shutdown
) (SOCKET s
, int how
);
5225 int (PASCAL
*pfn_WSACleanup
) (void);
5227 u_short (PASCAL
*pfn_htons
) (u_short hostshort
);
5228 u_short (PASCAL
*pfn_ntohs
) (u_short netshort
);
5229 unsigned long (PASCAL
*pfn_inet_addr
) (const char * cp
);
5230 int (PASCAL
*pfn_gethostname
) (char * name
, int namelen
);
5231 struct hostent
* (PASCAL
*pfn_gethostbyname
) (const char * name
);
5232 struct servent
* (PASCAL
*pfn_getservbyname
) (const char * name
, const char * proto
);
5233 int (PASCAL
*pfn_getpeername
) (SOCKET s
, struct sockaddr
*addr
, int * namelen
);
5234 int (PASCAL
*pfn_setsockopt
) (SOCKET s
, int level
, int optname
,
5235 const char * optval
, int optlen
);
5236 int (PASCAL
*pfn_listen
) (SOCKET s
, int backlog
);
5237 int (PASCAL
*pfn_getsockname
) (SOCKET s
, struct sockaddr
* name
,
5239 SOCKET (PASCAL
*pfn_accept
) (SOCKET s
, struct sockaddr
* addr
, int * addrlen
);
5240 int (PASCAL
*pfn_recvfrom
) (SOCKET s
, char * buf
, int len
, int flags
,
5241 struct sockaddr
* from
, int * fromlen
);
5242 int (PASCAL
*pfn_sendto
) (SOCKET s
, const char * buf
, int len
, int flags
,
5243 const struct sockaddr
* to
, int tolen
);
5245 /* SetHandleInformation is only needed to make sockets non-inheritable. */
5246 BOOL (WINAPI
*pfn_SetHandleInformation
) (HANDLE object
, DWORD mask
, DWORD flags
);
5247 #ifndef HANDLE_FLAG_INHERIT
5248 #define HANDLE_FLAG_INHERIT 1
5252 static int winsock_inuse
;
5257 if (winsock_lib
!= NULL
&& winsock_inuse
== 0)
5259 /* Not sure what would cause WSAENETDOWN, or even if it can happen
5260 after WSAStartup returns successfully, but it seems reasonable
5261 to allow unloading winsock anyway in that case. */
5262 if (pfn_WSACleanup () == 0 ||
5263 pfn_WSAGetLastError () == WSAENETDOWN
)
5265 if (FreeLibrary (winsock_lib
))
5274 init_winsock (int load_now
)
5276 WSADATA winsockData
;
5278 if (winsock_lib
!= NULL
)
5281 pfn_SetHandleInformation
5282 = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"),
5283 "SetHandleInformation");
5285 winsock_lib
= LoadLibrary ("Ws2_32.dll");
5287 if (winsock_lib
!= NULL
)
5289 /* dynamically link to socket functions */
5291 #define LOAD_PROC(fn) \
5292 if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \
5295 LOAD_PROC (WSAStartup
);
5296 LOAD_PROC (WSASetLastError
);
5297 LOAD_PROC (WSAGetLastError
);
5298 LOAD_PROC (WSAEventSelect
);
5299 LOAD_PROC (WSACreateEvent
);
5300 LOAD_PROC (WSACloseEvent
);
5303 LOAD_PROC (connect
);
5304 LOAD_PROC (ioctlsocket
);
5307 LOAD_PROC (closesocket
);
5308 LOAD_PROC (shutdown
);
5311 LOAD_PROC (inet_addr
);
5312 LOAD_PROC (gethostname
);
5313 LOAD_PROC (gethostbyname
);
5314 LOAD_PROC (getservbyname
);
5315 LOAD_PROC (getpeername
);
5316 LOAD_PROC (WSACleanup
);
5317 LOAD_PROC (setsockopt
);
5319 LOAD_PROC (getsockname
);
5321 LOAD_PROC (recvfrom
);
5325 /* specify version 1.1 of winsock */
5326 if (pfn_WSAStartup (0x101, &winsockData
) == 0)
5328 if (winsockData
.wVersion
!= 0x101)
5333 /* Report that winsock exists and is usable, but leave
5334 socket functions disabled. I am assuming that calling
5335 WSAStartup does not require any network interaction,
5336 and in particular does not cause or require a dial-up
5337 connection to be established. */
5340 FreeLibrary (winsock_lib
);
5348 FreeLibrary (winsock_lib
);
5358 /* function to set h_errno for compatibility; map winsock error codes to
5359 normal system codes where they overlap (non-overlapping definitions
5360 are already in <sys/socket.h> */
5364 if (winsock_lib
== NULL
)
5367 h_errno
= pfn_WSAGetLastError ();
5371 case WSAEACCES
: h_errno
= EACCES
; break;
5372 case WSAEBADF
: h_errno
= EBADF
; break;
5373 case WSAEFAULT
: h_errno
= EFAULT
; break;
5374 case WSAEINTR
: h_errno
= EINTR
; break;
5375 case WSAEINVAL
: h_errno
= EINVAL
; break;
5376 case WSAEMFILE
: h_errno
= EMFILE
; break;
5377 case WSAENAMETOOLONG
: h_errno
= ENAMETOOLONG
; break;
5378 case WSAENOTEMPTY
: h_errno
= ENOTEMPTY
; break;
5386 if (h_errno
== 0 && winsock_lib
!= NULL
)
5387 pfn_WSASetLastError (0);
5390 /* Extend strerror to handle the winsock-specific error codes. */
5394 } _wsa_errlist
[] = {
5395 {WSAEINTR
, "Interrupted function call"},
5396 {WSAEBADF
, "Bad file descriptor"},
5397 {WSAEACCES
, "Permission denied"},
5398 {WSAEFAULT
, "Bad address"},
5399 {WSAEINVAL
, "Invalid argument"},
5400 {WSAEMFILE
, "Too many open files"},
5402 {WSAEWOULDBLOCK
, "Resource temporarily unavailable"},
5403 {WSAEINPROGRESS
, "Operation now in progress"},
5404 {WSAEALREADY
, "Operation already in progress"},
5405 {WSAENOTSOCK
, "Socket operation on non-socket"},
5406 {WSAEDESTADDRREQ
, "Destination address required"},
5407 {WSAEMSGSIZE
, "Message too long"},
5408 {WSAEPROTOTYPE
, "Protocol wrong type for socket"},
5409 {WSAENOPROTOOPT
, "Bad protocol option"},
5410 {WSAEPROTONOSUPPORT
, "Protocol not supported"},
5411 {WSAESOCKTNOSUPPORT
, "Socket type not supported"},
5412 {WSAEOPNOTSUPP
, "Operation not supported"},
5413 {WSAEPFNOSUPPORT
, "Protocol family not supported"},
5414 {WSAEAFNOSUPPORT
, "Address family not supported by protocol family"},
5415 {WSAEADDRINUSE
, "Address already in use"},
5416 {WSAEADDRNOTAVAIL
, "Cannot assign requested address"},
5417 {WSAENETDOWN
, "Network is down"},
5418 {WSAENETUNREACH
, "Network is unreachable"},
5419 {WSAENETRESET
, "Network dropped connection on reset"},
5420 {WSAECONNABORTED
, "Software caused connection abort"},
5421 {WSAECONNRESET
, "Connection reset by peer"},
5422 {WSAENOBUFS
, "No buffer space available"},
5423 {WSAEISCONN
, "Socket is already connected"},
5424 {WSAENOTCONN
, "Socket is not connected"},
5425 {WSAESHUTDOWN
, "Cannot send after socket shutdown"},
5426 {WSAETOOMANYREFS
, "Too many references"}, /* not sure */
5427 {WSAETIMEDOUT
, "Connection timed out"},
5428 {WSAECONNREFUSED
, "Connection refused"},
5429 {WSAELOOP
, "Network loop"}, /* not sure */
5430 {WSAENAMETOOLONG
, "Name is too long"},
5431 {WSAEHOSTDOWN
, "Host is down"},
5432 {WSAEHOSTUNREACH
, "No route to host"},
5433 {WSAENOTEMPTY
, "Buffer not empty"}, /* not sure */
5434 {WSAEPROCLIM
, "Too many processes"},
5435 {WSAEUSERS
, "Too many users"}, /* not sure */
5436 {WSAEDQUOT
, "Double quote in host name"}, /* really not sure */
5437 {WSAESTALE
, "Data is stale"}, /* not sure */
5438 {WSAEREMOTE
, "Remote error"}, /* not sure */
5440 {WSASYSNOTREADY
, "Network subsystem is unavailable"},
5441 {WSAVERNOTSUPPORTED
, "WINSOCK.DLL version out of range"},
5442 {WSANOTINITIALISED
, "Winsock not initialized successfully"},
5443 {WSAEDISCON
, "Graceful shutdown in progress"},
5445 {WSAENOMORE
, "No more operations allowed"}, /* not sure */
5446 {WSAECANCELLED
, "Operation cancelled"}, /* not sure */
5447 {WSAEINVALIDPROCTABLE
, "Invalid procedure table from service provider"},
5448 {WSAEINVALIDPROVIDER
, "Invalid service provider version number"},
5449 {WSAEPROVIDERFAILEDINIT
, "Unable to initialize a service provider"},
5450 {WSASYSCALLFAILURE
, "System call failure"},
5451 {WSASERVICE_NOT_FOUND
, "Service not found"}, /* not sure */
5452 {WSATYPE_NOT_FOUND
, "Class type not found"},
5453 {WSA_E_NO_MORE
, "No more resources available"}, /* really not sure */
5454 {WSA_E_CANCELLED
, "Operation already cancelled"}, /* really not sure */
5455 {WSAEREFUSED
, "Operation refused"}, /* not sure */
5458 {WSAHOST_NOT_FOUND
, "Host not found"},
5459 {WSATRY_AGAIN
, "Authoritative host not found during name lookup"},
5460 {WSANO_RECOVERY
, "Non-recoverable error during name lookup"},
5461 {WSANO_DATA
, "Valid name, no data record of requested type"},
5467 sys_strerror (int error_no
)
5470 static char unknown_msg
[40];
5472 if (error_no
>= 0 && error_no
< sys_nerr
)
5473 return sys_errlist
[error_no
];
5475 for (i
= 0; _wsa_errlist
[i
].errnum
>= 0; i
++)
5476 if (_wsa_errlist
[i
].errnum
== error_no
)
5477 return _wsa_errlist
[i
].msg
;
5479 sprintf (unknown_msg
, "Unidentified error: %d", error_no
);
5483 /* [andrewi 3-May-96] I've had conflicting results using both methods,
5484 but I believe the method of keeping the socket handle separate (and
5485 insuring it is not inheritable) is the correct one. */
5487 #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd)
5489 static int socket_to_fd (SOCKET s
);
5492 sys_socket (int af
, int type
, int protocol
)
5496 if (winsock_lib
== NULL
)
5499 return INVALID_SOCKET
;
5504 /* call the real socket function */
5505 s
= pfn_socket (af
, type
, protocol
);
5507 if (s
!= INVALID_SOCKET
)
5508 return socket_to_fd (s
);
5514 /* Convert a SOCKET to a file descriptor. */
5516 socket_to_fd (SOCKET s
)
5521 /* Although under NT 3.5 _open_osfhandle will accept a socket
5522 handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT,
5523 that does not work under NT 3.1. However, we can get the same
5524 effect by using a backdoor function to replace an existing
5525 descriptor handle with the one we want. */
5527 /* allocate a file descriptor (with appropriate flags) */
5528 fd
= _open ("NUL:", _O_RDWR
);
5531 /* Make a non-inheritable copy of the socket handle. Note
5532 that it is possible that sockets aren't actually kernel
5533 handles, which appears to be the case on Windows 9x when
5534 the MS Proxy winsock client is installed. */
5536 /* Apparently there is a bug in NT 3.51 with some service
5537 packs, which prevents using DuplicateHandle to make a
5538 socket handle non-inheritable (causes WSACleanup to
5539 hang). The work-around is to use SetHandleInformation
5540 instead if it is available and implemented. */
5541 if (pfn_SetHandleInformation
)
5543 pfn_SetHandleInformation ((HANDLE
) s
, HANDLE_FLAG_INHERIT
, 0);
5547 HANDLE parent
= GetCurrentProcess ();
5548 HANDLE new_s
= INVALID_HANDLE_VALUE
;
5550 if (DuplicateHandle (parent
,
5556 DUPLICATE_SAME_ACCESS
))
5558 /* It is possible that DuplicateHandle succeeds even
5559 though the socket wasn't really a kernel handle,
5560 because a real handle has the same value. So
5561 test whether the new handle really is a socket. */
5562 long nonblocking
= 0;
5563 if (pfn_ioctlsocket ((SOCKET
) new_s
, FIONBIO
, &nonblocking
) == 0)
5565 pfn_closesocket (s
);
5570 CloseHandle (new_s
);
5575 fd_info
[fd
].hnd
= (HANDLE
) s
;
5577 /* set our own internal flags */
5578 fd_info
[fd
].flags
= FILE_SOCKET
| FILE_BINARY
| FILE_READ
| FILE_WRITE
;
5584 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
5586 /* attach child_process to fd_info */
5587 if (fd_info
[ fd
].cp
!= NULL
)
5589 DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd
));
5593 fd_info
[ fd
].cp
= cp
;
5596 winsock_inuse
++; /* count open sockets */
5603 pfn_closesocket (s
);
5609 sys_bind (int s
, const struct sockaddr
* addr
, int namelen
)
5611 if (winsock_lib
== NULL
)
5614 return SOCKET_ERROR
;
5618 if (fd_info
[s
].flags
& FILE_SOCKET
)
5620 int rc
= pfn_bind (SOCK_HANDLE (s
), addr
, namelen
);
5621 if (rc
== SOCKET_ERROR
)
5626 return SOCKET_ERROR
;
5630 sys_connect (int s
, const struct sockaddr
* name
, int namelen
)
5632 if (winsock_lib
== NULL
)
5635 return SOCKET_ERROR
;
5639 if (fd_info
[s
].flags
& FILE_SOCKET
)
5641 int rc
= pfn_connect (SOCK_HANDLE (s
), name
, namelen
);
5642 if (rc
== SOCKET_ERROR
)
5647 return SOCKET_ERROR
;
5651 sys_htons (u_short hostshort
)
5653 return (winsock_lib
!= NULL
) ?
5654 pfn_htons (hostshort
) : hostshort
;
5658 sys_ntohs (u_short netshort
)
5660 return (winsock_lib
!= NULL
) ?
5661 pfn_ntohs (netshort
) : netshort
;
5665 sys_inet_addr (const char * cp
)
5667 return (winsock_lib
!= NULL
) ?
5668 pfn_inet_addr (cp
) : INADDR_NONE
;
5672 sys_gethostname (char * name
, int namelen
)
5674 if (winsock_lib
!= NULL
)
5675 return pfn_gethostname (name
, namelen
);
5677 if (namelen
> MAX_COMPUTERNAME_LENGTH
)
5678 return !GetComputerName (name
, (DWORD
*)&namelen
);
5681 return SOCKET_ERROR
;
5685 sys_gethostbyname (const char * name
)
5687 struct hostent
* host
;
5689 if (winsock_lib
== NULL
)
5696 host
= pfn_gethostbyname (name
);
5703 sys_getservbyname (const char * name
, const char * proto
)
5705 struct servent
* serv
;
5707 if (winsock_lib
== NULL
)
5714 serv
= pfn_getservbyname (name
, proto
);
5721 sys_getpeername (int s
, struct sockaddr
*addr
, int * namelen
)
5723 if (winsock_lib
== NULL
)
5726 return SOCKET_ERROR
;
5730 if (fd_info
[s
].flags
& FILE_SOCKET
)
5732 int rc
= pfn_getpeername (SOCK_HANDLE (s
), addr
, namelen
);
5733 if (rc
== SOCKET_ERROR
)
5738 return SOCKET_ERROR
;
5742 sys_shutdown (int s
, int how
)
5744 if (winsock_lib
== NULL
)
5747 return SOCKET_ERROR
;
5751 if (fd_info
[s
].flags
& FILE_SOCKET
)
5753 int rc
= pfn_shutdown (SOCK_HANDLE (s
), how
);
5754 if (rc
== SOCKET_ERROR
)
5759 return SOCKET_ERROR
;
5763 sys_setsockopt (int s
, int level
, int optname
, const void * optval
, int optlen
)
5765 if (winsock_lib
== NULL
)
5768 return SOCKET_ERROR
;
5772 if (fd_info
[s
].flags
& FILE_SOCKET
)
5774 int rc
= pfn_setsockopt (SOCK_HANDLE (s
), level
, optname
,
5775 (const char *)optval
, optlen
);
5776 if (rc
== SOCKET_ERROR
)
5781 return SOCKET_ERROR
;
5785 sys_listen (int s
, int backlog
)
5787 if (winsock_lib
== NULL
)
5790 return SOCKET_ERROR
;
5794 if (fd_info
[s
].flags
& FILE_SOCKET
)
5796 int rc
= pfn_listen (SOCK_HANDLE (s
), backlog
);
5797 if (rc
== SOCKET_ERROR
)
5800 fd_info
[s
].flags
|= FILE_LISTEN
;
5804 return SOCKET_ERROR
;
5808 sys_getsockname (int s
, struct sockaddr
* name
, int * namelen
)
5810 if (winsock_lib
== NULL
)
5813 return SOCKET_ERROR
;
5817 if (fd_info
[s
].flags
& FILE_SOCKET
)
5819 int rc
= pfn_getsockname (SOCK_HANDLE (s
), name
, namelen
);
5820 if (rc
== SOCKET_ERROR
)
5825 return SOCKET_ERROR
;
5829 sys_accept (int s
, struct sockaddr
* addr
, int * addrlen
)
5831 if (winsock_lib
== NULL
)
5838 if (fd_info
[s
].flags
& FILE_LISTEN
)
5840 SOCKET t
= pfn_accept (SOCK_HANDLE (s
), addr
, addrlen
);
5842 if (t
== INVALID_SOCKET
)
5845 fd
= socket_to_fd (t
);
5847 fd_info
[s
].cp
->status
= STATUS_READ_ACKNOWLEDGED
;
5848 ResetEvent (fd_info
[s
].cp
->char_avail
);
5856 sys_recvfrom (int s
, char * buf
, int len
, int flags
,
5857 struct sockaddr
* from
, int * fromlen
)
5859 if (winsock_lib
== NULL
)
5862 return SOCKET_ERROR
;
5866 if (fd_info
[s
].flags
& FILE_SOCKET
)
5868 int rc
= pfn_recvfrom (SOCK_HANDLE (s
), buf
, len
, flags
, from
, fromlen
);
5869 if (rc
== SOCKET_ERROR
)
5874 return SOCKET_ERROR
;
5878 sys_sendto (int s
, const char * buf
, int len
, int flags
,
5879 const struct sockaddr
* to
, int tolen
)
5881 if (winsock_lib
== NULL
)
5884 return SOCKET_ERROR
;
5888 if (fd_info
[s
].flags
& FILE_SOCKET
)
5890 int rc
= pfn_sendto (SOCK_HANDLE (s
), buf
, len
, flags
, to
, tolen
);
5891 if (rc
== SOCKET_ERROR
)
5896 return SOCKET_ERROR
;
5899 /* Windows does not have an fcntl function. Provide an implementation
5900 solely for making sockets non-blocking. */
5902 fcntl (int s
, int cmd
, int options
)
5904 if (winsock_lib
== NULL
)
5911 if (fd_info
[s
].flags
& FILE_SOCKET
)
5913 if (cmd
== F_SETFL
&& options
== O_NDELAY
)
5915 unsigned long nblock
= 1;
5916 int rc
= pfn_ioctlsocket (SOCK_HANDLE (s
), FIONBIO
, &nblock
);
5917 if (rc
== SOCKET_ERROR
)
5919 /* Keep track of the fact that we set this to non-blocking. */
5920 fd_info
[s
].flags
|= FILE_NDELAY
;
5926 return SOCKET_ERROR
;
5930 return SOCKET_ERROR
;
5934 /* Shadow main io functions: we need to handle pipes and sockets more
5935 intelligently, and implement non-blocking mode as well. */
5948 if (fd
< MAXDESC
&& fd_info
[fd
].cp
)
5950 child_process
* cp
= fd_info
[fd
].cp
;
5952 fd_info
[fd
].cp
= NULL
;
5954 if (CHILD_ACTIVE (cp
))
5956 /* if last descriptor to active child_process then cleanup */
5958 for (i
= 0; i
< MAXDESC
; i
++)
5962 if (fd_info
[i
].cp
== cp
)
5967 if (fd_info
[fd
].flags
& FILE_SOCKET
)
5969 if (winsock_lib
== NULL
) abort ();
5971 pfn_shutdown (SOCK_HANDLE (fd
), 2);
5972 rc
= pfn_closesocket (SOCK_HANDLE (fd
));
5974 winsock_inuse
--; /* count open sockets */
5981 /* Note that sockets do not need special treatment here (at least on
5982 NT and Windows 95 using the standard tcp/ip stacks) - it appears that
5983 closesocket is equivalent to CloseHandle, which is to be expected
5984 because socket handles are fully fledged kernel handles. */
5987 if (rc
== 0 && fd
< MAXDESC
)
5988 fd_info
[fd
].flags
= 0;
5999 if (new_fd
>= 0 && new_fd
< MAXDESC
)
6001 /* duplicate our internal info as well */
6002 fd_info
[new_fd
] = fd_info
[fd
];
6008 sys_dup2 (int src
, int dst
)
6012 if (dst
< 0 || dst
>= MAXDESC
)
6018 /* make sure we close the destination first if it's a pipe or socket */
6019 if (src
!= dst
&& fd_info
[dst
].flags
!= 0)
6022 rc
= _dup2 (src
, dst
);
6025 /* duplicate our internal info as well */
6026 fd_info
[dst
] = fd_info
[src
];
6031 /* Unix pipe() has only one arg */
6033 sys_pipe (int * phandles
)
6038 /* make pipe handles non-inheritable; when we spawn a child, we
6039 replace the relevant handle with an inheritable one. Also put
6040 pipes into binary mode; we will do text mode translation ourselves
6042 rc
= _pipe (phandles
, 0, _O_NOINHERIT
| _O_BINARY
);
6046 /* Protect against overflow, since Windows can open more handles than
6047 our fd_info array has room for. */
6048 if (phandles
[0] >= MAXDESC
|| phandles
[1] >= MAXDESC
)
6050 _close (phandles
[0]);
6051 _close (phandles
[1]);
6056 flags
= FILE_PIPE
| FILE_READ
| FILE_BINARY
;
6057 fd_info
[phandles
[0]].flags
= flags
;
6059 flags
= FILE_PIPE
| FILE_WRITE
| FILE_BINARY
;
6060 fd_info
[phandles
[1]].flags
= flags
;
6067 /* Function to do blocking read of one byte, needed to implement
6068 select. It is only allowed on sockets and pipes. */
6070 _sys_read_ahead (int fd
)
6075 if (fd
< 0 || fd
>= MAXDESC
)
6076 return STATUS_READ_ERROR
;
6078 cp
= fd_info
[fd
].cp
;
6080 if (cp
== NULL
|| cp
->fd
!= fd
|| cp
->status
!= STATUS_READ_READY
)
6081 return STATUS_READ_ERROR
;
6083 if ((fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SERIAL
| FILE_SOCKET
)) == 0
6084 || (fd_info
[fd
].flags
& FILE_READ
) == 0)
6086 DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe, serial port, or socket!\n", fd
));
6090 cp
->status
= STATUS_READ_IN_PROGRESS
;
6092 if (fd_info
[fd
].flags
& FILE_PIPE
)
6094 rc
= _read (fd
, &cp
->chr
, sizeof (char));
6096 /* Give subprocess time to buffer some more output for us before
6097 reporting that input is available; we need this because Windows 95
6098 connects DOS programs to pipes by making the pipe appear to be
6099 the normal console stdout - as a result most DOS programs will
6100 write to stdout without buffering, ie. one character at a
6101 time. Even some W32 programs do this - "dir" in a command
6102 shell on NT is very slow if we don't do this. */
6105 int wait
= w32_pipe_read_delay
;
6111 /* Yield remainder of our time slice, effectively giving a
6112 temporary priority boost to the child process. */
6116 else if (fd_info
[fd
].flags
& FILE_SERIAL
)
6118 HANDLE hnd
= fd_info
[fd
].hnd
;
6119 OVERLAPPED
*ovl
= &fd_info
[fd
].cp
->ovl_read
;
6122 /* Configure timeouts for blocking read. */
6123 if (!GetCommTimeouts (hnd
, &ct
))
6124 return STATUS_READ_ERROR
;
6125 ct
.ReadIntervalTimeout
= 0;
6126 ct
.ReadTotalTimeoutMultiplier
= 0;
6127 ct
.ReadTotalTimeoutConstant
= 0;
6128 if (!SetCommTimeouts (hnd
, &ct
))
6129 return STATUS_READ_ERROR
;
6131 if (!ReadFile (hnd
, &cp
->chr
, sizeof (char), (DWORD
*) &rc
, ovl
))
6133 if (GetLastError () != ERROR_IO_PENDING
)
6134 return STATUS_READ_ERROR
;
6135 if (!GetOverlappedResult (hnd
, ovl
, (DWORD
*) &rc
, TRUE
))
6136 return STATUS_READ_ERROR
;
6139 else if (fd_info
[fd
].flags
& FILE_SOCKET
)
6141 unsigned long nblock
= 0;
6142 /* We always want this to block, so temporarily disable NDELAY. */
6143 if (fd_info
[fd
].flags
& FILE_NDELAY
)
6144 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
6146 rc
= pfn_recv (SOCK_HANDLE (fd
), &cp
->chr
, sizeof (char), 0);
6148 if (fd_info
[fd
].flags
& FILE_NDELAY
)
6151 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
6155 if (rc
== sizeof (char))
6156 cp
->status
= STATUS_READ_SUCCEEDED
;
6158 cp
->status
= STATUS_READ_FAILED
;
6164 _sys_wait_accept (int fd
)
6170 if (fd
< 0 || fd
>= MAXDESC
)
6171 return STATUS_READ_ERROR
;
6173 cp
= fd_info
[fd
].cp
;
6175 if (cp
== NULL
|| cp
->fd
!= fd
|| cp
->status
!= STATUS_READ_READY
)
6176 return STATUS_READ_ERROR
;
6178 cp
->status
= STATUS_READ_FAILED
;
6180 hEv
= pfn_WSACreateEvent ();
6181 rc
= pfn_WSAEventSelect (SOCK_HANDLE (fd
), hEv
, FD_ACCEPT
);
6182 if (rc
!= SOCKET_ERROR
)
6184 rc
= WaitForSingleObject (hEv
, INFINITE
);
6185 pfn_WSAEventSelect (SOCK_HANDLE (fd
), NULL
, 0);
6186 if (rc
== WAIT_OBJECT_0
)
6187 cp
->status
= STATUS_READ_SUCCEEDED
;
6189 pfn_WSACloseEvent (hEv
);
6195 sys_read (int fd
, char * buffer
, unsigned int count
)
6200 char * orig_buffer
= buffer
;
6208 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SOCKET
| FILE_SERIAL
))
6210 child_process
*cp
= fd_info
[fd
].cp
;
6212 if ((fd_info
[fd
].flags
& FILE_READ
) == 0)
6220 /* re-read CR carried over from last read */
6221 if (fd_info
[fd
].flags
& FILE_LAST_CR
)
6223 if (fd_info
[fd
].flags
& FILE_BINARY
) abort ();
6227 fd_info
[fd
].flags
&= ~FILE_LAST_CR
;
6230 /* presence of a child_process structure means we are operating in
6231 non-blocking mode - otherwise we just call _read directly.
6232 Note that the child_process structure might be missing because
6233 reap_subprocess has been called; in this case the pipe is
6234 already broken, so calling _read on it is okay. */
6237 int current_status
= cp
->status
;
6239 switch (current_status
)
6241 case STATUS_READ_FAILED
:
6242 case STATUS_READ_ERROR
:
6243 /* report normal EOF if nothing in buffer */
6245 fd_info
[fd
].flags
|= FILE_AT_EOF
;
6248 case STATUS_READ_READY
:
6249 case STATUS_READ_IN_PROGRESS
:
6250 DebPrint (("sys_read called when read is in progress\n"));
6251 errno
= EWOULDBLOCK
;
6254 case STATUS_READ_SUCCEEDED
:
6255 /* consume read-ahead char */
6256 *buffer
++ = cp
->chr
;
6259 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
6260 ResetEvent (cp
->char_avail
);
6262 case STATUS_READ_ACKNOWLEDGED
:
6266 DebPrint (("sys_read: bad status %d\n", current_status
));
6271 if (fd_info
[fd
].flags
& FILE_PIPE
)
6273 PeekNamedPipe ((HANDLE
) _get_osfhandle (fd
), NULL
, 0, NULL
, &waiting
, NULL
);
6274 to_read
= min (waiting
, (DWORD
) count
);
6277 nchars
+= _read (fd
, buffer
, to_read
);
6279 else if (fd_info
[fd
].flags
& FILE_SERIAL
)
6281 HANDLE hnd
= fd_info
[fd
].hnd
;
6282 OVERLAPPED
*ovl
= &fd_info
[fd
].cp
->ovl_read
;
6288 /* Configure timeouts for non-blocking read. */
6289 if (!GetCommTimeouts (hnd
, &ct
))
6294 ct
.ReadIntervalTimeout
= MAXDWORD
;
6295 ct
.ReadTotalTimeoutMultiplier
= 0;
6296 ct
.ReadTotalTimeoutConstant
= 0;
6297 if (!SetCommTimeouts (hnd
, &ct
))
6303 if (!ResetEvent (ovl
->hEvent
))
6308 if (!ReadFile (hnd
, buffer
, count
, (DWORD
*) &rc
, ovl
))
6310 if (GetLastError () != ERROR_IO_PENDING
)
6315 if (!GetOverlappedResult (hnd
, ovl
, (DWORD
*) &rc
, TRUE
))
6324 else /* FILE_SOCKET */
6326 if (winsock_lib
== NULL
) abort ();
6328 /* do the equivalent of a non-blocking read */
6329 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONREAD
, &waiting
);
6330 if (waiting
== 0 && nchars
== 0)
6332 h_errno
= errno
= EWOULDBLOCK
;
6338 /* always use binary mode for sockets */
6339 int res
= pfn_recv (SOCK_HANDLE (fd
), buffer
, count
, 0);
6340 if (res
== SOCKET_ERROR
)
6342 DebPrint (("sys_read.recv failed with error %d on socket %ld\n",
6343 pfn_WSAGetLastError (), SOCK_HANDLE (fd
)));
6353 int nread
= _read (fd
, buffer
, count
);
6356 else if (nchars
== 0)
6361 fd_info
[fd
].flags
|= FILE_AT_EOF
;
6362 /* Perform text mode translation if required. */
6363 else if ((fd_info
[fd
].flags
& FILE_BINARY
) == 0)
6365 nchars
= crlf_to_lf (nchars
, orig_buffer
);
6366 /* If buffer contains only CR, return that. To be absolutely
6367 sure we should attempt to read the next char, but in
6368 practice a CR to be followed by LF would not appear by
6369 itself in the buffer. */
6370 if (nchars
> 1 && orig_buffer
[nchars
- 1] == 0x0d)
6372 fd_info
[fd
].flags
|= FILE_LAST_CR
;
6378 nchars
= _read (fd
, buffer
, count
);
6383 /* From w32xfns.c */
6384 extern HANDLE interrupt_handle
;
6386 /* For now, don't bother with a non-blocking mode */
6388 sys_write (int fd
, const void * buffer
, unsigned int count
)
6398 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SOCKET
| FILE_SERIAL
))
6400 if ((fd_info
[fd
].flags
& FILE_WRITE
) == 0)
6406 /* Perform text mode translation if required. */
6407 if ((fd_info
[fd
].flags
& FILE_BINARY
) == 0)
6409 char * tmpbuf
= alloca (count
* 2);
6410 unsigned char * src
= (void *)buffer
;
6411 unsigned char * dst
= tmpbuf
;
6416 unsigned char *next
;
6417 /* copy next line or remaining bytes */
6418 next
= _memccpy (dst
, src
, '\n', nbytes
);
6421 /* copied one line ending with '\n' */
6422 int copied
= next
- dst
;
6425 /* insert '\r' before '\n' */
6432 /* copied remaining partial line -> now finished */
6439 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& FILE_SERIAL
)
6441 HANDLE hnd
= (HANDLE
) _get_osfhandle (fd
);
6442 OVERLAPPED
*ovl
= &fd_info
[fd
].cp
->ovl_write
;
6443 HANDLE wait_hnd
[2] = { interrupt_handle
, ovl
->hEvent
};
6446 if (!WriteFile (hnd
, buffer
, count
, (DWORD
*) &nchars
, ovl
))
6448 if (GetLastError () != ERROR_IO_PENDING
)
6453 if (detect_input_pending ())
6454 active
= MsgWaitForMultipleObjects (2, wait_hnd
, FALSE
, INFINITE
,
6457 active
= WaitForMultipleObjects (2, wait_hnd
, FALSE
, INFINITE
);
6458 if (active
== WAIT_OBJECT_0
)
6459 { /* User pressed C-g, cancel write, then leave. Don't bother
6460 cleaning up as we may only get stuck in buggy drivers. */
6461 PurgeComm (hnd
, PURGE_TXABORT
| PURGE_TXCLEAR
);
6466 if (active
== WAIT_OBJECT_0
+ 1
6467 && !GetOverlappedResult (hnd
, ovl
, (DWORD
*) &nchars
, TRUE
))
6474 else if (fd
< MAXDESC
&& fd_info
[fd
].flags
& FILE_SOCKET
)
6476 unsigned long nblock
= 0;
6477 if (winsock_lib
== NULL
) abort ();
6479 /* TODO: implement select() properly so non-blocking I/O works. */
6480 /* For now, make sure the write blocks. */
6481 if (fd_info
[fd
].flags
& FILE_NDELAY
)
6482 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
6484 nchars
= pfn_send (SOCK_HANDLE (fd
), buffer
, count
, 0);
6486 /* Set the socket back to non-blocking if it was before,
6487 for other operations that support it. */
6488 if (fd_info
[fd
].flags
& FILE_NDELAY
)
6491 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
6494 if (nchars
== SOCKET_ERROR
)
6496 DebPrint (("sys_write.send failed with error %d on socket %ld\n",
6497 pfn_WSAGetLastError (), SOCK_HANDLE (fd
)));
6503 /* Some networked filesystems don't like too large writes, so
6504 break them into smaller chunks. See the Comments section of
6505 the MSDN documentation of WriteFile for details behind the
6506 choice of the value of CHUNK below. See also the thread
6507 http://thread.gmane.org/gmane.comp.version-control.git/145294
6508 in the git mailing list. */
6509 const unsigned char *p
= buffer
;
6510 const unsigned chunk
= 30 * 1024 * 1024;
6515 unsigned this_chunk
= count
< chunk
? count
: chunk
;
6516 int n
= _write (fd
, p
, this_chunk
);
6524 else if (n
< this_chunk
)
6534 /* The Windows CRT functions are "optimized for speed", so they don't
6535 check for timezone and DST changes if they were last called less
6536 than 1 minute ago (see http://support.microsoft.com/kb/821231). So
6537 all Emacs features that repeatedly call time functions (e.g.,
6538 display-time) are in real danger of missing timezone and DST
6539 changes. Calling tzset before each localtime call fixes that. */
6541 sys_localtime (const time_t *t
)
6544 return localtime (t
);
6549 /* Delayed loading of libraries. */
6551 Lisp_Object Vlibrary_cache
;
6553 /* The argument LIBRARIES is an alist that associates a symbol
6554 LIBRARY_ID, identifying an external DLL library known to Emacs, to
6555 a list of filenames under which the library is usually found. In
6556 most cases, the argument passed as LIBRARIES is the variable
6557 `dynamic-library-alist', which is initialized to a list of common
6558 library names. If the function loads the library successfully, it
6559 returns the handle of the DLL, and records the filename in the
6560 property :loaded-from of LIBRARY_ID; it returns NULL if the library
6561 could not be found, or when it was already loaded (because the
6562 handle is not recorded anywhere, and so is lost after use). It
6563 would be trivial to save the handle too in :loaded-from, but
6564 currently there's no use case for it. */
6566 w32_delayed_load (Lisp_Object libraries
, Lisp_Object library_id
)
6568 HMODULE library_dll
= NULL
;
6570 CHECK_SYMBOL (library_id
);
6572 if (CONSP (libraries
) && NILP (Fassq (library_id
, Vlibrary_cache
)))
6574 Lisp_Object found
= Qnil
;
6575 Lisp_Object dlls
= Fassq (library_id
, libraries
);
6578 for (dlls
= XCDR (dlls
); CONSP (dlls
); dlls
= XCDR (dlls
))
6580 CHECK_STRING_CAR (dlls
);
6581 if ((library_dll
= LoadLibrary (SDATA (XCAR (dlls
)))))
6583 char name
[MAX_PATH
];
6586 len
= GetModuleFileNameA (library_dll
, name
, sizeof (name
));
6587 found
= Fcons (XCAR (dlls
),
6589 /* Possibly truncated */
6590 ? make_specified_string (name
, -1, len
, 1)
6596 Fput (library_id
, QCloaded_from
, found
);
6604 check_windows_init_file (void)
6606 /* A common indication that Emacs is not installed properly is when
6607 it cannot find the Windows installation file. If this file does
6608 not exist in the expected place, tell the user. */
6610 if (!noninteractive
&& !inhibit_window_system
6611 /* Vload_path is not yet initialized when we are loading
6613 && NILP (Vpurify_flag
))
6615 Lisp_Object init_file
;
6618 init_file
= build_string ("term/w32-win");
6619 fd
= openp (Vload_path
, init_file
, Fget_load_suffixes (), NULL
, Qnil
);
6622 Lisp_Object load_path_print
= Fprin1_to_string (Vload_path
, Qnil
);
6623 char *init_file_name
= SDATA (init_file
);
6624 char *load_path
= SDATA (load_path_print
);
6625 char *buffer
= alloca (1024
6626 + strlen (init_file_name
)
6627 + strlen (load_path
));
6630 "The Emacs Windows initialization file \"%s.el\" "
6631 "could not be found in your Emacs installation. "
6632 "Emacs checked the following directories for this file:\n"
6634 "When Emacs cannot find this file, it usually means that it "
6635 "was not installed properly, or its distribution file was "
6636 "not unpacked properly.\nSee the README.W32 file in the "
6637 "top-level Emacs directory for more information.",
6638 init_file_name
, load_path
);
6641 "Emacs Abort Dialog",
6642 MB_OK
| MB_ICONEXCLAMATION
| MB_TASKMODAL
);
6643 /* Use the low-level Emacs abort. */
6657 /* shutdown the socket interface if necessary */
6666 /* Initialize the socket interface now if available and requested by
6667 the user by defining PRELOAD_WINSOCK; otherwise loading will be
6668 delayed until open-network-stream is called (w32-has-winsock can
6669 also be used to dynamically load or reload winsock).
6671 Conveniently, init_environment is called before us, so
6672 PRELOAD_WINSOCK can be set in the registry. */
6674 /* Always initialize this correctly. */
6677 if (getenv ("PRELOAD_WINSOCK") != NULL
)
6678 init_winsock (TRUE
);
6680 /* Initial preparation for subprocess support: replace our standard
6681 handles with non-inheritable versions. */
6684 HANDLE stdin_save
= INVALID_HANDLE_VALUE
;
6685 HANDLE stdout_save
= INVALID_HANDLE_VALUE
;
6686 HANDLE stderr_save
= INVALID_HANDLE_VALUE
;
6688 parent
= GetCurrentProcess ();
6690 /* ignore errors when duplicating and closing; typically the
6691 handles will be invalid when running as a gui program. */
6692 DuplicateHandle (parent
,
6693 GetStdHandle (STD_INPUT_HANDLE
),
6698 DUPLICATE_SAME_ACCESS
);
6700 DuplicateHandle (parent
,
6701 GetStdHandle (STD_OUTPUT_HANDLE
),
6706 DUPLICATE_SAME_ACCESS
);
6708 DuplicateHandle (parent
,
6709 GetStdHandle (STD_ERROR_HANDLE
),
6714 DUPLICATE_SAME_ACCESS
);
6720 if (stdin_save
!= INVALID_HANDLE_VALUE
)
6721 _open_osfhandle ((long) stdin_save
, O_TEXT
);
6723 _open ("nul", O_TEXT
| O_NOINHERIT
| O_RDONLY
);
6726 if (stdout_save
!= INVALID_HANDLE_VALUE
)
6727 _open_osfhandle ((long) stdout_save
, O_TEXT
);
6729 _open ("nul", O_TEXT
| O_NOINHERIT
| O_WRONLY
);
6732 if (stderr_save
!= INVALID_HANDLE_VALUE
)
6733 _open_osfhandle ((long) stderr_save
, O_TEXT
);
6735 _open ("nul", O_TEXT
| O_NOINHERIT
| O_WRONLY
);
6739 /* unfortunately, atexit depends on implementation of malloc */
6740 /* atexit (term_ntproc); */
6741 signal (SIGABRT
, term_ntproc
);
6743 /* determine which drives are fixed, for GetCachedVolumeInformation */
6745 /* GetDriveType must have trailing backslash. */
6746 char drive
[] = "A:\\";
6748 /* Loop over all possible drive letters */
6749 while (*drive
<= 'Z')
6751 /* Record if this drive letter refers to a fixed drive. */
6752 fixed_drives
[DRIVE_INDEX (*drive
)] =
6753 (GetDriveType (drive
) == DRIVE_FIXED
);
6758 /* Reset the volume info cache. */
6759 volume_cache
= NULL
;
6764 shutdown_handler ensures that buffers' autosave files are
6765 up to date when the user logs off, or the system shuts down.
6768 shutdown_handler (DWORD type
)
6770 /* Ctrl-C and Ctrl-Break are already suppressed, so don't handle them. */
6771 if (type
== CTRL_CLOSE_EVENT
/* User closes console window. */
6772 || type
== CTRL_LOGOFF_EVENT
/* User logs off. */
6773 || type
== CTRL_SHUTDOWN_EVENT
) /* User shutsdown. */
6775 /* Shut down cleanly, making sure autosave files are up to date. */
6776 shut_down_emacs (0, 0, Qnil
);
6779 /* Allow other handlers to handle this signal. */
6784 globals_of_w32 is used to initialize those global variables that
6785 must always be initialized on startup even when the global variable
6786 initialized is non zero (see the function main in emacs.c).
6789 globals_of_w32 (void)
6791 HMODULE kernel32
= GetModuleHandle ("kernel32.dll");
6793 get_process_times_fn
= (GetProcessTimes_Proc
)
6794 GetProcAddress (kernel32
, "GetProcessTimes");
6796 DEFSYM (QCloaded_from
, ":loaded-from");
6798 Vlibrary_cache
= Qnil
;
6799 staticpro (&Vlibrary_cache
);
6801 g_b_init_is_windows_9x
= 0;
6802 g_b_init_open_process_token
= 0;
6803 g_b_init_get_token_information
= 0;
6804 g_b_init_lookup_account_sid
= 0;
6805 g_b_init_get_sid_sub_authority
= 0;
6806 g_b_init_get_sid_sub_authority_count
= 0;
6807 g_b_init_get_security_info
= 0;
6808 g_b_init_get_file_security
= 0;
6809 g_b_init_get_security_descriptor_owner
= 0;
6810 g_b_init_get_security_descriptor_group
= 0;
6811 g_b_init_is_valid_sid
= 0;
6812 g_b_init_create_toolhelp32_snapshot
= 0;
6813 g_b_init_process32_first
= 0;
6814 g_b_init_process32_next
= 0;
6815 g_b_init_open_thread_token
= 0;
6816 g_b_init_impersonate_self
= 0;
6817 g_b_init_revert_to_self
= 0;
6818 g_b_init_get_process_memory_info
= 0;
6819 g_b_init_get_process_working_set_size
= 0;
6820 g_b_init_global_memory_status
= 0;
6821 g_b_init_global_memory_status_ex
= 0;
6822 g_b_init_equal_sid
= 0;
6823 g_b_init_copy_sid
= 0;
6824 g_b_init_get_length_sid
= 0;
6825 g_b_init_get_native_system_info
= 0;
6826 g_b_init_get_system_times
= 0;
6827 g_b_init_create_symbolic_link
= 0;
6828 num_of_processors
= 0;
6829 /* The following sets a handler for shutdown notifications for
6830 console apps. This actually applies to Emacs in both console and
6831 GUI modes, since we had to fool windows into thinking emacs is a
6832 console application to get console mode to work. */
6833 SetConsoleCtrlHandler (shutdown_handler
, TRUE
);
6835 /* "None" is the default group name on standalone workstations. */
6836 strcpy (dflt_group_name
, "None");
6839 /* For make-serial-process */
6841 serial_open (char *port
)
6847 hnd
= CreateFile (port
, GENERIC_READ
| GENERIC_WRITE
, 0, 0,
6848 OPEN_EXISTING
, FILE_FLAG_OVERLAPPED
, 0);
6849 if (hnd
== INVALID_HANDLE_VALUE
)
6850 error ("Could not open %s", port
);
6851 fd
= (int) _open_osfhandle ((int) hnd
, 0);
6853 error ("Could not open %s", port
);
6857 error ("Could not create child process");
6859 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
6860 fd_info
[ fd
].hnd
= hnd
;
6861 fd_info
[ fd
].flags
|=
6862 FILE_READ
| FILE_WRITE
| FILE_BINARY
| FILE_SERIAL
;
6863 if (fd_info
[ fd
].cp
!= NULL
)
6865 error ("fd_info[fd = %d] is already in use", fd
);
6867 fd_info
[ fd
].cp
= cp
;
6868 cp
->ovl_read
.hEvent
= CreateEvent (NULL
, TRUE
, FALSE
, NULL
);
6869 if (cp
->ovl_read
.hEvent
== NULL
)
6870 error ("Could not create read event");
6871 cp
->ovl_write
.hEvent
= CreateEvent (NULL
, TRUE
, FALSE
, NULL
);
6872 if (cp
->ovl_write
.hEvent
== NULL
)
6873 error ("Could not create write event");
6878 /* For serial-process-configure */
6880 serial_configure (struct Lisp_Process
*p
, Lisp_Object contact
)
6882 Lisp_Object childp2
= Qnil
;
6883 Lisp_Object tem
= Qnil
;
6887 char summary
[4] = "???"; /* This usually becomes "8N1". */
6889 if ((fd_info
[ p
->outfd
].flags
& FILE_SERIAL
) == 0)
6890 error ("Not a serial process");
6891 hnd
= fd_info
[ p
->outfd
].hnd
;
6893 childp2
= Fcopy_sequence (p
->childp
);
6895 /* Initialize timeouts for blocking read and blocking write. */
6896 if (!GetCommTimeouts (hnd
, &ct
))
6897 error ("GetCommTimeouts() failed");
6898 ct
.ReadIntervalTimeout
= 0;
6899 ct
.ReadTotalTimeoutMultiplier
= 0;
6900 ct
.ReadTotalTimeoutConstant
= 0;
6901 ct
.WriteTotalTimeoutMultiplier
= 0;
6902 ct
.WriteTotalTimeoutConstant
= 0;
6903 if (!SetCommTimeouts (hnd
, &ct
))
6904 error ("SetCommTimeouts() failed");
6905 /* Read port attributes and prepare default configuration. */
6906 memset (&dcb
, 0, sizeof (dcb
));
6907 dcb
.DCBlength
= sizeof (DCB
);
6908 if (!GetCommState (hnd
, &dcb
))
6909 error ("GetCommState() failed");
6912 dcb
.fAbortOnError
= FALSE
;
6913 /* dcb.XonLim and dcb.XoffLim are set by GetCommState() */
6918 /* Configure speed. */
6919 if (!NILP (Fplist_member (contact
, QCspeed
)))
6920 tem
= Fplist_get (contact
, QCspeed
);
6922 tem
= Fplist_get (p
->childp
, QCspeed
);
6924 dcb
.BaudRate
= XINT (tem
);
6925 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
6927 /* Configure bytesize. */
6928 if (!NILP (Fplist_member (contact
, QCbytesize
)))
6929 tem
= Fplist_get (contact
, QCbytesize
);
6931 tem
= Fplist_get (p
->childp
, QCbytesize
);
6933 tem
= make_number (8);
6935 if (XINT (tem
) != 7 && XINT (tem
) != 8)
6936 error (":bytesize must be nil (8), 7, or 8");
6937 dcb
.ByteSize
= XINT (tem
);
6938 summary
[0] = XINT (tem
) + '0';
6939 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
6941 /* Configure parity. */
6942 if (!NILP (Fplist_member (contact
, QCparity
)))
6943 tem
= Fplist_get (contact
, QCparity
);
6945 tem
= Fplist_get (p
->childp
, QCparity
);
6946 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
6947 error (":parity must be nil (no parity), `even', or `odd'");
6948 dcb
.fParity
= FALSE
;
6949 dcb
.Parity
= NOPARITY
;
6950 dcb
.fErrorChar
= FALSE
;
6955 else if (EQ (tem
, Qeven
))
6959 dcb
.Parity
= EVENPARITY
;
6960 dcb
.fErrorChar
= TRUE
;
6962 else if (EQ (tem
, Qodd
))
6966 dcb
.Parity
= ODDPARITY
;
6967 dcb
.fErrorChar
= TRUE
;
6969 childp2
= Fplist_put (childp2
, QCparity
, tem
);
6971 /* Configure stopbits. */
6972 if (!NILP (Fplist_member (contact
, QCstopbits
)))
6973 tem
= Fplist_get (contact
, QCstopbits
);
6975 tem
= Fplist_get (p
->childp
, QCstopbits
);
6977 tem
= make_number (1);
6979 if (XINT (tem
) != 1 && XINT (tem
) != 2)
6980 error (":stopbits must be nil (1 stopbit), 1, or 2");
6981 summary
[2] = XINT (tem
) + '0';
6982 if (XINT (tem
) == 1)
6983 dcb
.StopBits
= ONESTOPBIT
;
6984 else if (XINT (tem
) == 2)
6985 dcb
.StopBits
= TWOSTOPBITS
;
6986 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
6988 /* Configure flowcontrol. */
6989 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
6990 tem
= Fplist_get (contact
, QCflowcontrol
);
6992 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
6993 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
6994 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
6995 dcb
.fOutxCtsFlow
= FALSE
;
6996 dcb
.fOutxDsrFlow
= FALSE
;
6997 dcb
.fDtrControl
= DTR_CONTROL_DISABLE
;
6998 dcb
.fDsrSensitivity
= FALSE
;
6999 dcb
.fTXContinueOnXoff
= FALSE
;
7002 dcb
.fRtsControl
= RTS_CONTROL_DISABLE
;
7003 dcb
.XonChar
= 17; /* Control-Q */
7004 dcb
.XoffChar
= 19; /* Control-S */
7007 /* Already configured. */
7009 else if (EQ (tem
, Qhw
))
7011 dcb
.fRtsControl
= RTS_CONTROL_HANDSHAKE
;
7012 dcb
.fOutxCtsFlow
= TRUE
;
7014 else if (EQ (tem
, Qsw
))
7019 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
7021 /* Activate configuration. */
7022 if (!SetCommState (hnd
, &dcb
))
7023 error ("SetCommState() failed");
7025 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
7026 PSET (p
, childp
, childp2
);
7032 emacs_gnutls_pull (gnutls_transport_ptr_t p
, void* buf
, size_t sz
)
7036 struct timeval timeout
;
7037 struct Lisp_Process
*process
= (struct Lisp_Process
*)p
;
7038 int fd
= process
->infd
;
7042 n
= sys_read (fd
, (char*)buf
, sz
);
7049 if (err
== EWOULDBLOCK
)
7051 /* Set a small timeout. */
7053 timeout
.tv_usec
= 0;
7055 FD_SET ((int)fd
, &fdset
);
7057 /* Use select with the timeout to poll the selector. */
7058 sc
= select (fd
+ 1, &fdset
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
7062 continue; /* Try again. */
7064 /* Translate the WSAEWOULDBLOCK alias EWOULDBLOCK to EAGAIN.
7065 Also accept select return 0 as an indicator to EAGAIN. */
7066 if (sc
== 0 || errno
== EWOULDBLOCK
)
7069 err
= errno
; /* Other errors are just passed on. */
7072 emacs_gnutls_transport_set_errno (process
->gnutls_state
, err
);
7079 emacs_gnutls_push (gnutls_transport_ptr_t p
, const void* buf
, size_t sz
)
7081 struct Lisp_Process
*process
= (struct Lisp_Process
*)p
;
7082 int fd
= process
->outfd
;
7083 ssize_t n
= sys_write (fd
, buf
, sz
);
7085 /* 0 or more bytes written means everything went fine. */
7089 /* Negative bytes written means we got an error in errno.
7090 Translate the WSAEWOULDBLOCK alias EWOULDBLOCK to EAGAIN. */
7091 emacs_gnutls_transport_set_errno (process
->gnutls_state
,
7092 errno
== EWOULDBLOCK
? EAGAIN
: errno
);
7096 #endif /* HAVE_GNUTLS */