1 /* Utility and Unix shadow routines for GNU Emacs on the Microsoft Windows API.
2 Copyright (C) 1994-1995, 2000-2013 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>
37 /* must include CRT headers *before* config.h */
40 #include <mbstring.h> /* for _mbspbrk and _mbslwr */
73 #define _ANONYMOUS_UNION
74 #define _ANONYMOUS_STRUCT
77 /* Some versions of compiler define MEMORYSTATUSEX, some don't, so we
78 use a different name to avoid compilation problems. */
79 typedef struct _MEMORY_STATUS_EX
{
82 DWORDLONG ullTotalPhys
;
83 DWORDLONG ullAvailPhys
;
84 DWORDLONG ullTotalPageFile
;
85 DWORDLONG ullAvailPageFile
;
86 DWORDLONG ullTotalVirtual
;
87 DWORDLONG ullAvailVirtual
;
88 DWORDLONG ullAvailExtendedVirtual
;
89 } MEMORY_STATUS_EX
,*LPMEMORY_STATUS_EX
;
99 #if !defined (__MINGW32__) || __W32API_MAJOR_VERSION < 3 || (__W32API_MAJOR_VERSION == 3 && __W32API_MINOR_VERSION < 15)
100 /* This either is not in psapi.h or guarded by higher value of
101 _WIN32_WINNT than what we use. w32api supplied with MinGW 3.15
102 defines it in psapi.h */
103 typedef struct _PROCESS_MEMORY_COUNTERS_EX
{
105 DWORD PageFaultCount
;
106 SIZE_T PeakWorkingSetSize
;
107 SIZE_T WorkingSetSize
;
108 SIZE_T QuotaPeakPagedPoolUsage
;
109 SIZE_T QuotaPagedPoolUsage
;
110 SIZE_T QuotaPeakNonPagedPoolUsage
;
111 SIZE_T QuotaNonPagedPoolUsage
;
112 SIZE_T PagefileUsage
;
113 SIZE_T PeakPagefileUsage
;
115 } PROCESS_MEMORY_COUNTERS_EX
,*PPROCESS_MEMORY_COUNTERS_EX
;
118 #include <winioctl.h>
122 /* MSVC doesn't provide the definition of REPARSE_DATA_BUFFER and the
123 associated macros, except on ntifs.h, which cannot be included
124 because it triggers conflicts with other Windows API headers. So
125 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
;
153 #ifndef FILE_DEVICE_FILE_SYSTEM
154 #define FILE_DEVICE_FILE_SYSTEM 9
156 #ifndef METHOD_BUFFERED
157 #define METHOD_BUFFERED 0
159 #ifndef FILE_ANY_ACCESS
160 #define FILE_ANY_ACCESS 0x00000000
163 #define CTL_CODE(t,f,m,a) (((t)<<16)|((a)<<14)|((f)<<2)|(m))
165 #define FSCTL_GET_REPARSE_POINT \
166 CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 42, METHOD_BUFFERED, FILE_ANY_ACCESS)
169 /* TCP connection support. */
170 #include <sys/socket.h>
191 #include "w32common.h"
193 #include "w32select.h"
195 #include "dispextern.h" /* for xstrcasecmp */
196 #include "coding.h" /* for Vlocale_coding_system */
198 #include "careadlinkat.h"
199 #include "allocator.h"
201 /* For serial_configure and serial_open. */
204 typedef HRESULT (WINAPI
* ShGetFolderPath_fn
)
205 (IN HWND
, IN
int, IN HANDLE
, IN DWORD
, OUT
char *);
207 Lisp_Object QCloaded_from
;
209 void globals_of_w32 (void);
210 static DWORD
get_rid (PSID
);
211 static int is_symlink (const char *);
212 static char * chase_symlinks (const char *);
213 static int enable_privilege (LPCTSTR
, BOOL
, TOKEN_PRIVILEGES
*);
214 static int restore_privilege (TOKEN_PRIVILEGES
*);
215 static BOOL WINAPI
revert_to_self (void);
217 extern int sys_access (const char *, int);
218 extern void *e_malloc (size_t);
219 extern int sys_select (int, SELECT_TYPE
*, SELECT_TYPE
*, SELECT_TYPE
*,
220 EMACS_TIME
*, void *);
224 /* Initialization states.
226 WARNING: If you add any more such variables for additional APIs,
227 you MUST add initialization for them to globals_of_w32
228 below. This is because these variables might get set
229 to non-NULL values during dumping, but the dumped Emacs
230 cannot reuse those values, because it could be run on a
231 different version of the OS, where API addresses are
233 static BOOL g_b_init_is_windows_9x
;
234 static BOOL g_b_init_open_process_token
;
235 static BOOL g_b_init_get_token_information
;
236 static BOOL g_b_init_lookup_account_sid
;
237 static BOOL g_b_init_get_sid_sub_authority
;
238 static BOOL g_b_init_get_sid_sub_authority_count
;
239 static BOOL g_b_init_get_security_info
;
240 static BOOL g_b_init_get_file_security
;
241 static BOOL g_b_init_get_security_descriptor_owner
;
242 static BOOL g_b_init_get_security_descriptor_group
;
243 static BOOL g_b_init_is_valid_sid
;
244 static BOOL g_b_init_create_toolhelp32_snapshot
;
245 static BOOL g_b_init_process32_first
;
246 static BOOL g_b_init_process32_next
;
247 static BOOL g_b_init_open_thread_token
;
248 static BOOL g_b_init_impersonate_self
;
249 static BOOL g_b_init_revert_to_self
;
250 static BOOL g_b_init_get_process_memory_info
;
251 static BOOL g_b_init_get_process_working_set_size
;
252 static BOOL g_b_init_global_memory_status
;
253 static BOOL g_b_init_global_memory_status_ex
;
254 static BOOL g_b_init_get_length_sid
;
255 static BOOL g_b_init_equal_sid
;
256 static BOOL g_b_init_copy_sid
;
257 static BOOL g_b_init_get_native_system_info
;
258 static BOOL g_b_init_get_system_times
;
259 static BOOL g_b_init_create_symbolic_link
;
262 BEGIN: Wrapper functions around OpenProcessToken
263 and other functions in advapi32.dll that are only
264 supported in Windows NT / 2k / XP
266 /* ** Function pointer typedefs ** */
267 typedef BOOL (WINAPI
* OpenProcessToken_Proc
) (
268 HANDLE ProcessHandle
,
270 PHANDLE TokenHandle
);
271 typedef BOOL (WINAPI
* GetTokenInformation_Proc
) (
273 TOKEN_INFORMATION_CLASS TokenInformationClass
,
274 LPVOID TokenInformation
,
275 DWORD TokenInformationLength
,
276 PDWORD ReturnLength
);
277 typedef BOOL (WINAPI
* GetProcessTimes_Proc
) (
278 HANDLE process_handle
,
279 LPFILETIME creation_time
,
280 LPFILETIME exit_time
,
281 LPFILETIME kernel_time
,
282 LPFILETIME user_time
);
284 GetProcessTimes_Proc get_process_times_fn
= NULL
;
287 const char * const LookupAccountSid_Name
= "LookupAccountSidW";
288 const char * const GetFileSecurity_Name
= "GetFileSecurityW";
290 const char * const LookupAccountSid_Name
= "LookupAccountSidA";
291 const char * const GetFileSecurity_Name
= "GetFileSecurityA";
293 typedef BOOL (WINAPI
* LookupAccountSid_Proc
) (
294 LPCTSTR lpSystemName
,
299 LPDWORD cbDomainName
,
300 PSID_NAME_USE peUse
);
301 typedef PDWORD (WINAPI
* GetSidSubAuthority_Proc
) (
304 typedef PUCHAR (WINAPI
* GetSidSubAuthorityCount_Proc
) (
306 typedef DWORD (WINAPI
* GetSecurityInfo_Proc
) (
308 SE_OBJECT_TYPE ObjectType
,
309 SECURITY_INFORMATION SecurityInfo
,
314 PSECURITY_DESCRIPTOR
*ppSecurityDescriptor
);
315 typedef BOOL (WINAPI
* GetFileSecurity_Proc
) (
317 SECURITY_INFORMATION RequestedInformation
,
318 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
320 LPDWORD lpnLengthNeeded
);
321 typedef BOOL (WINAPI
* GetSecurityDescriptorOwner_Proc
) (
322 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
324 LPBOOL lpbOwnerDefaulted
);
325 typedef BOOL (WINAPI
* GetSecurityDescriptorGroup_Proc
) (
326 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
328 LPBOOL lpbGroupDefaulted
);
329 typedef BOOL (WINAPI
* IsValidSid_Proc
) (
331 typedef HANDLE (WINAPI
* CreateToolhelp32Snapshot_Proc
) (
333 DWORD th32ProcessID
);
334 typedef BOOL (WINAPI
* Process32First_Proc
) (
336 LPPROCESSENTRY32 lppe
);
337 typedef BOOL (WINAPI
* Process32Next_Proc
) (
339 LPPROCESSENTRY32 lppe
);
340 typedef BOOL (WINAPI
* OpenThreadToken_Proc
) (
344 PHANDLE TokenHandle
);
345 typedef BOOL (WINAPI
* ImpersonateSelf_Proc
) (
346 SECURITY_IMPERSONATION_LEVEL ImpersonationLevel
);
347 typedef BOOL (WINAPI
* RevertToSelf_Proc
) (void);
348 typedef BOOL (WINAPI
* GetProcessMemoryInfo_Proc
) (
350 PPROCESS_MEMORY_COUNTERS ppsmemCounters
,
352 typedef BOOL (WINAPI
* GetProcessWorkingSetSize_Proc
) (
354 PSIZE_T lpMinimumWorkingSetSize
,
355 PSIZE_T lpMaximumWorkingSetSize
);
356 typedef BOOL (WINAPI
* GlobalMemoryStatus_Proc
) (
357 LPMEMORYSTATUS lpBuffer
);
358 typedef BOOL (WINAPI
* GlobalMemoryStatusEx_Proc
) (
359 LPMEMORY_STATUS_EX lpBuffer
);
360 typedef BOOL (WINAPI
* CopySid_Proc
) (
361 DWORD nDestinationSidLength
,
362 PSID pDestinationSid
,
364 typedef BOOL (WINAPI
* EqualSid_Proc
) (
367 typedef DWORD (WINAPI
* GetLengthSid_Proc
) (
369 typedef void (WINAPI
* GetNativeSystemInfo_Proc
) (
370 LPSYSTEM_INFO lpSystemInfo
);
371 typedef BOOL (WINAPI
* GetSystemTimes_Proc
) (
372 LPFILETIME lpIdleTime
,
373 LPFILETIME lpKernelTime
,
374 LPFILETIME lpUserTime
);
375 typedef BOOLEAN (WINAPI
*CreateSymbolicLink_Proc
) (
376 LPTSTR lpSymlinkFileName
,
377 LPTSTR lpTargetFileName
,
380 /* ** A utility function ** */
384 static BOOL s_b_ret
= 0;
385 OSVERSIONINFO os_ver
;
386 if (g_b_init_is_windows_9x
== 0)
388 g_b_init_is_windows_9x
= 1;
389 ZeroMemory (&os_ver
, sizeof (OSVERSIONINFO
));
390 os_ver
.dwOSVersionInfoSize
= sizeof (OSVERSIONINFO
);
391 if (GetVersionEx (&os_ver
))
393 s_b_ret
= (os_ver
.dwPlatformId
== VER_PLATFORM_WIN32_WINDOWS
);
399 static Lisp_Object
ltime (ULONGLONG
);
401 /* Get total user and system times for get-internal-run-time.
402 Returns a list of integers if the times are provided by the OS
403 (NT derivatives), otherwise it returns the result of current-time. */
405 w32_get_internal_run_time (void)
407 if (get_process_times_fn
)
409 FILETIME create
, exit
, kernel
, user
;
410 HANDLE proc
= GetCurrentProcess ();
411 if ((*get_process_times_fn
) (proc
, &create
, &exit
, &kernel
, &user
))
413 LARGE_INTEGER user_int
, kernel_int
, total
;
414 user_int
.LowPart
= user
.dwLowDateTime
;
415 user_int
.HighPart
= user
.dwHighDateTime
;
416 kernel_int
.LowPart
= kernel
.dwLowDateTime
;
417 kernel_int
.HighPart
= kernel
.dwHighDateTime
;
418 total
.QuadPart
= user_int
.QuadPart
+ kernel_int
.QuadPart
;
419 return ltime (total
.QuadPart
);
423 return Fcurrent_time ();
426 /* ** The wrapper functions ** */
429 open_process_token (HANDLE ProcessHandle
,
433 static OpenProcessToken_Proc s_pfn_Open_Process_Token
= NULL
;
434 HMODULE hm_advapi32
= NULL
;
435 if (is_windows_9x () == TRUE
)
439 if (g_b_init_open_process_token
== 0)
441 g_b_init_open_process_token
= 1;
442 hm_advapi32
= LoadLibrary ("Advapi32.dll");
443 s_pfn_Open_Process_Token
=
444 (OpenProcessToken_Proc
) GetProcAddress (hm_advapi32
, "OpenProcessToken");
446 if (s_pfn_Open_Process_Token
== NULL
)
451 s_pfn_Open_Process_Token (
459 get_token_information (HANDLE TokenHandle
,
460 TOKEN_INFORMATION_CLASS TokenInformationClass
,
461 LPVOID TokenInformation
,
462 DWORD TokenInformationLength
,
465 static GetTokenInformation_Proc s_pfn_Get_Token_Information
= NULL
;
466 HMODULE hm_advapi32
= NULL
;
467 if (is_windows_9x () == TRUE
)
471 if (g_b_init_get_token_information
== 0)
473 g_b_init_get_token_information
= 1;
474 hm_advapi32
= LoadLibrary ("Advapi32.dll");
475 s_pfn_Get_Token_Information
=
476 (GetTokenInformation_Proc
) GetProcAddress (hm_advapi32
, "GetTokenInformation");
478 if (s_pfn_Get_Token_Information
== NULL
)
483 s_pfn_Get_Token_Information (
485 TokenInformationClass
,
487 TokenInformationLength
,
493 lookup_account_sid (LPCTSTR lpSystemName
,
498 LPDWORD cbDomainName
,
501 static LookupAccountSid_Proc s_pfn_Lookup_Account_Sid
= NULL
;
502 HMODULE hm_advapi32
= NULL
;
503 if (is_windows_9x () == TRUE
)
507 if (g_b_init_lookup_account_sid
== 0)
509 g_b_init_lookup_account_sid
= 1;
510 hm_advapi32
= LoadLibrary ("Advapi32.dll");
511 s_pfn_Lookup_Account_Sid
=
512 (LookupAccountSid_Proc
) GetProcAddress (hm_advapi32
, LookupAccountSid_Name
);
514 if (s_pfn_Lookup_Account_Sid
== NULL
)
519 s_pfn_Lookup_Account_Sid (
531 get_sid_sub_authority (PSID pSid
, DWORD n
)
533 static GetSidSubAuthority_Proc s_pfn_Get_Sid_Sub_Authority
= NULL
;
534 static DWORD zero
= 0U;
535 HMODULE hm_advapi32
= NULL
;
536 if (is_windows_9x () == TRUE
)
540 if (g_b_init_get_sid_sub_authority
== 0)
542 g_b_init_get_sid_sub_authority
= 1;
543 hm_advapi32
= LoadLibrary ("Advapi32.dll");
544 s_pfn_Get_Sid_Sub_Authority
=
545 (GetSidSubAuthority_Proc
) GetProcAddress (
546 hm_advapi32
, "GetSidSubAuthority");
548 if (s_pfn_Get_Sid_Sub_Authority
== NULL
)
552 return (s_pfn_Get_Sid_Sub_Authority (pSid
, n
));
556 get_sid_sub_authority_count (PSID pSid
)
558 static GetSidSubAuthorityCount_Proc s_pfn_Get_Sid_Sub_Authority_Count
= NULL
;
559 static UCHAR zero
= 0U;
560 HMODULE hm_advapi32
= NULL
;
561 if (is_windows_9x () == TRUE
)
565 if (g_b_init_get_sid_sub_authority_count
== 0)
567 g_b_init_get_sid_sub_authority_count
= 1;
568 hm_advapi32
= LoadLibrary ("Advapi32.dll");
569 s_pfn_Get_Sid_Sub_Authority_Count
=
570 (GetSidSubAuthorityCount_Proc
) GetProcAddress (
571 hm_advapi32
, "GetSidSubAuthorityCount");
573 if (s_pfn_Get_Sid_Sub_Authority_Count
== NULL
)
577 return (s_pfn_Get_Sid_Sub_Authority_Count (pSid
));
581 get_security_info (HANDLE handle
,
582 SE_OBJECT_TYPE ObjectType
,
583 SECURITY_INFORMATION SecurityInfo
,
588 PSECURITY_DESCRIPTOR
*ppSecurityDescriptor
)
590 static GetSecurityInfo_Proc s_pfn_Get_Security_Info
= NULL
;
591 HMODULE hm_advapi32
= NULL
;
592 if (is_windows_9x () == TRUE
)
596 if (g_b_init_get_security_info
== 0)
598 g_b_init_get_security_info
= 1;
599 hm_advapi32
= LoadLibrary ("Advapi32.dll");
600 s_pfn_Get_Security_Info
=
601 (GetSecurityInfo_Proc
) GetProcAddress (
602 hm_advapi32
, "GetSecurityInfo");
604 if (s_pfn_Get_Security_Info
== NULL
)
608 return (s_pfn_Get_Security_Info (handle
, ObjectType
, SecurityInfo
,
609 ppsidOwner
, ppsidGroup
, ppDacl
, ppSacl
,
610 ppSecurityDescriptor
));
614 get_file_security (LPCTSTR lpFileName
,
615 SECURITY_INFORMATION RequestedInformation
,
616 PSECURITY_DESCRIPTOR pSecurityDescriptor
,
618 LPDWORD lpnLengthNeeded
)
620 static GetFileSecurity_Proc s_pfn_Get_File_Security
= NULL
;
621 HMODULE hm_advapi32
= NULL
;
622 if (is_windows_9x () == TRUE
)
626 if (g_b_init_get_file_security
== 0)
628 g_b_init_get_file_security
= 1;
629 hm_advapi32
= LoadLibrary ("Advapi32.dll");
630 s_pfn_Get_File_Security
=
631 (GetFileSecurity_Proc
) GetProcAddress (
632 hm_advapi32
, GetFileSecurity_Name
);
634 if (s_pfn_Get_File_Security
== NULL
)
638 return (s_pfn_Get_File_Security (lpFileName
, RequestedInformation
,
639 pSecurityDescriptor
, nLength
,
644 get_security_descriptor_owner (PSECURITY_DESCRIPTOR pSecurityDescriptor
,
646 LPBOOL lpbOwnerDefaulted
)
648 static GetSecurityDescriptorOwner_Proc s_pfn_Get_Security_Descriptor_Owner
= NULL
;
649 HMODULE hm_advapi32
= NULL
;
650 if (is_windows_9x () == TRUE
)
654 if (g_b_init_get_security_descriptor_owner
== 0)
656 g_b_init_get_security_descriptor_owner
= 1;
657 hm_advapi32
= LoadLibrary ("Advapi32.dll");
658 s_pfn_Get_Security_Descriptor_Owner
=
659 (GetSecurityDescriptorOwner_Proc
) GetProcAddress (
660 hm_advapi32
, "GetSecurityDescriptorOwner");
662 if (s_pfn_Get_Security_Descriptor_Owner
== NULL
)
666 return (s_pfn_Get_Security_Descriptor_Owner (pSecurityDescriptor
, pOwner
,
671 get_security_descriptor_group (PSECURITY_DESCRIPTOR pSecurityDescriptor
,
673 LPBOOL lpbGroupDefaulted
)
675 static GetSecurityDescriptorGroup_Proc s_pfn_Get_Security_Descriptor_Group
= NULL
;
676 HMODULE hm_advapi32
= NULL
;
677 if (is_windows_9x () == TRUE
)
681 if (g_b_init_get_security_descriptor_group
== 0)
683 g_b_init_get_security_descriptor_group
= 1;
684 hm_advapi32
= LoadLibrary ("Advapi32.dll");
685 s_pfn_Get_Security_Descriptor_Group
=
686 (GetSecurityDescriptorGroup_Proc
) GetProcAddress (
687 hm_advapi32
, "GetSecurityDescriptorGroup");
689 if (s_pfn_Get_Security_Descriptor_Group
== NULL
)
693 return (s_pfn_Get_Security_Descriptor_Group (pSecurityDescriptor
, pGroup
,
698 is_valid_sid (PSID sid
)
700 static IsValidSid_Proc s_pfn_Is_Valid_Sid
= NULL
;
701 HMODULE hm_advapi32
= NULL
;
702 if (is_windows_9x () == TRUE
)
706 if (g_b_init_is_valid_sid
== 0)
708 g_b_init_is_valid_sid
= 1;
709 hm_advapi32
= LoadLibrary ("Advapi32.dll");
711 (IsValidSid_Proc
) GetProcAddress (
712 hm_advapi32
, "IsValidSid");
714 if (s_pfn_Is_Valid_Sid
== NULL
)
718 return (s_pfn_Is_Valid_Sid (sid
));
722 equal_sid (PSID sid1
, PSID sid2
)
724 static EqualSid_Proc s_pfn_Equal_Sid
= NULL
;
725 HMODULE hm_advapi32
= NULL
;
726 if (is_windows_9x () == TRUE
)
730 if (g_b_init_equal_sid
== 0)
732 g_b_init_equal_sid
= 1;
733 hm_advapi32
= LoadLibrary ("Advapi32.dll");
735 (EqualSid_Proc
) GetProcAddress (
736 hm_advapi32
, "EqualSid");
738 if (s_pfn_Equal_Sid
== NULL
)
742 return (s_pfn_Equal_Sid (sid1
, sid2
));
746 get_length_sid (PSID sid
)
748 static GetLengthSid_Proc s_pfn_Get_Length_Sid
= NULL
;
749 HMODULE hm_advapi32
= NULL
;
750 if (is_windows_9x () == TRUE
)
754 if (g_b_init_get_length_sid
== 0)
756 g_b_init_get_length_sid
= 1;
757 hm_advapi32
= LoadLibrary ("Advapi32.dll");
758 s_pfn_Get_Length_Sid
=
759 (GetLengthSid_Proc
) GetProcAddress (
760 hm_advapi32
, "GetLengthSid");
762 if (s_pfn_Get_Length_Sid
== NULL
)
766 return (s_pfn_Get_Length_Sid (sid
));
770 copy_sid (DWORD destlen
, PSID dest
, PSID src
)
772 static CopySid_Proc s_pfn_Copy_Sid
= NULL
;
773 HMODULE hm_advapi32
= NULL
;
774 if (is_windows_9x () == TRUE
)
778 if (g_b_init_copy_sid
== 0)
780 g_b_init_copy_sid
= 1;
781 hm_advapi32
= LoadLibrary ("Advapi32.dll");
783 (CopySid_Proc
) GetProcAddress (
784 hm_advapi32
, "CopySid");
786 if (s_pfn_Copy_Sid
== NULL
)
790 return (s_pfn_Copy_Sid (destlen
, dest
, src
));
794 END: Wrapper functions around OpenProcessToken
795 and other functions in advapi32.dll that are only
796 supported in Windows NT / 2k / XP
800 get_native_system_info (LPSYSTEM_INFO lpSystemInfo
)
802 static GetNativeSystemInfo_Proc s_pfn_Get_Native_System_Info
= NULL
;
803 if (is_windows_9x () != TRUE
)
805 if (g_b_init_get_native_system_info
== 0)
807 g_b_init_get_native_system_info
= 1;
808 s_pfn_Get_Native_System_Info
=
809 (GetNativeSystemInfo_Proc
)GetProcAddress (GetModuleHandle ("kernel32.dll"),
810 "GetNativeSystemInfo");
812 if (s_pfn_Get_Native_System_Info
!= NULL
)
813 s_pfn_Get_Native_System_Info (lpSystemInfo
);
816 lpSystemInfo
->dwNumberOfProcessors
= -1;
820 get_system_times (LPFILETIME lpIdleTime
,
821 LPFILETIME lpKernelTime
,
822 LPFILETIME lpUserTime
)
824 static GetSystemTimes_Proc s_pfn_Get_System_times
= NULL
;
825 if (is_windows_9x () == TRUE
)
829 if (g_b_init_get_system_times
== 0)
831 g_b_init_get_system_times
= 1;
832 s_pfn_Get_System_times
=
833 (GetSystemTimes_Proc
)GetProcAddress (GetModuleHandle ("kernel32.dll"),
836 if (s_pfn_Get_System_times
== NULL
)
838 return (s_pfn_Get_System_times (lpIdleTime
, lpKernelTime
, lpUserTime
));
841 static BOOLEAN WINAPI
842 create_symbolic_link (LPTSTR lpSymlinkFilename
,
843 LPTSTR lpTargetFileName
,
846 static CreateSymbolicLink_Proc s_pfn_Create_Symbolic_Link
= NULL
;
849 if (is_windows_9x () == TRUE
)
854 if (g_b_init_create_symbolic_link
== 0)
856 g_b_init_create_symbolic_link
= 1;
858 s_pfn_Create_Symbolic_Link
=
859 (CreateSymbolicLink_Proc
)GetProcAddress (GetModuleHandle ("kernel32.dll"),
860 "CreateSymbolicLinkW");
862 s_pfn_Create_Symbolic_Link
=
863 (CreateSymbolicLink_Proc
)GetProcAddress (GetModuleHandle ("kernel32.dll"),
864 "CreateSymbolicLinkA");
867 if (s_pfn_Create_Symbolic_Link
== NULL
)
873 retval
= s_pfn_Create_Symbolic_Link (lpSymlinkFilename
, lpTargetFileName
,
875 /* If we were denied creation of the symlink, try again after
876 enabling the SeCreateSymbolicLinkPrivilege for our process. */
879 TOKEN_PRIVILEGES priv_current
;
881 if (enable_privilege (SE_CREATE_SYMBOLIC_LINK_NAME
, TRUE
, &priv_current
))
883 retval
= s_pfn_Create_Symbolic_Link (lpSymlinkFilename
, lpTargetFileName
,
885 restore_privilege (&priv_current
);
893 /* Return 1 if P is a valid pointer to an object of size SIZE. Return
894 0 if P is NOT a valid pointer. Return -1 if we cannot validate P.
896 This is called from alloc.c:valid_pointer_p. */
898 w32_valid_pointer_p (void *p
, int size
)
901 HANDLE h
= OpenProcess (PROCESS_VM_READ
, FALSE
, GetCurrentProcessId ());
905 unsigned char *buf
= alloca (size
);
906 int retval
= ReadProcessMemory (h
, p
, buf
, size
, &done
);
915 static char startup_dir
[MAXPATHLEN
];
917 /* Get the current working directory. */
922 if (GetCurrentDirectory (MAXPATHLEN
, dir
) > 0)
926 /* Emacs doesn't actually change directory itself, it stays in the
927 same directory where it was started. */
928 strcpy (dir
, startup_dir
);
933 /* Emulate getloadavg. */
942 /* Number of processors on this machine. */
943 static unsigned num_of_processors
;
945 /* We maintain 1-sec samples for the last 16 minutes in a circular buffer. */
946 static struct load_sample samples
[16*60];
947 static int first_idx
= -1, last_idx
= -1;
948 static int max_idx
= sizeof (samples
) / sizeof (samples
[0]);
953 int next_idx
= from
+ 1;
955 if (next_idx
>= max_idx
)
964 int prev_idx
= from
- 1;
967 prev_idx
= max_idx
- 1;
973 sample_system_load (ULONGLONG
*idle
, ULONGLONG
*kernel
, ULONGLONG
*user
)
976 FILETIME ft_idle
, ft_user
, ft_kernel
;
978 /* Initialize the number of processors on this machine. */
979 if (num_of_processors
<= 0)
981 get_native_system_info (&sysinfo
);
982 num_of_processors
= sysinfo
.dwNumberOfProcessors
;
983 if (num_of_processors
<= 0)
985 GetSystemInfo (&sysinfo
);
986 num_of_processors
= sysinfo
.dwNumberOfProcessors
;
988 if (num_of_processors
<= 0)
989 num_of_processors
= 1;
992 /* TODO: Take into account threads that are ready to run, by
993 sampling the "\System\Processor Queue Length" performance
994 counter. The code below accounts only for threads that are
997 if (get_system_times (&ft_idle
, &ft_kernel
, &ft_user
))
999 ULARGE_INTEGER uidle
, ukernel
, uuser
;
1001 memcpy (&uidle
, &ft_idle
, sizeof (ft_idle
));
1002 memcpy (&ukernel
, &ft_kernel
, sizeof (ft_kernel
));
1003 memcpy (&uuser
, &ft_user
, sizeof (ft_user
));
1004 *idle
= uidle
.QuadPart
;
1005 *kernel
= ukernel
.QuadPart
;
1006 *user
= uuser
.QuadPart
;
1016 /* Produce the load average for a given time interval, using the
1017 samples in the samples[] array. WHICH can be 0, 1, or 2, meaning
1018 1-minute, 5-minute, or 15-minute average, respectively. */
1022 double retval
= -1.0;
1025 double span
= (which
== 0 ? 1.0 : (which
== 1 ? 5.0 : 15.0)) * 60;
1026 time_t now
= samples
[last_idx
].sample_time
;
1028 if (first_idx
!= last_idx
)
1030 for (idx
= buf_prev (last_idx
); ; idx
= buf_prev (idx
))
1032 tdiff
= difftime (now
, samples
[idx
].sample_time
);
1033 if (tdiff
>= span
- 2*DBL_EPSILON
*now
)
1036 samples
[last_idx
].kernel
+ samples
[last_idx
].user
1037 - (samples
[idx
].kernel
+ samples
[idx
].user
);
1038 long double idl
= samples
[last_idx
].idle
- samples
[idx
].idle
;
1040 retval
= (1.0 - idl
/ sys
) * num_of_processors
;
1043 if (idx
== first_idx
)
1052 getloadavg (double loadavg
[], int nelem
)
1055 ULONGLONG idle
, kernel
, user
;
1056 time_t now
= time (NULL
);
1058 /* Store another sample. We ignore samples that are less than 1 sec
1060 if (difftime (now
, samples
[last_idx
].sample_time
) >= 1.0 - 2*DBL_EPSILON
*now
)
1062 sample_system_load (&idle
, &kernel
, &user
);
1063 last_idx
= buf_next (last_idx
);
1064 samples
[last_idx
].sample_time
= now
;
1065 samples
[last_idx
].idle
= idle
;
1066 samples
[last_idx
].kernel
= kernel
;
1067 samples
[last_idx
].user
= user
;
1068 /* If the buffer has more that 15 min worth of samples, discard
1070 if (first_idx
== -1)
1071 first_idx
= last_idx
;
1072 while (first_idx
!= last_idx
1073 && (difftime (now
, samples
[first_idx
].sample_time
)
1074 >= 15.0*60 + 2*DBL_EPSILON
*now
))
1075 first_idx
= buf_next (first_idx
);
1078 for (elem
= 0; elem
< nelem
; elem
++)
1080 double avg
= getavg (elem
);
1084 loadavg
[elem
] = avg
;
1090 /* Emulate getpwuid, getpwnam and others. */
1092 #define PASSWD_FIELD_SIZE 256
1094 static char dflt_passwd_name
[PASSWD_FIELD_SIZE
];
1095 static char dflt_passwd_passwd
[PASSWD_FIELD_SIZE
];
1096 static char dflt_passwd_gecos
[PASSWD_FIELD_SIZE
];
1097 static char dflt_passwd_dir
[PASSWD_FIELD_SIZE
];
1098 static char dflt_passwd_shell
[PASSWD_FIELD_SIZE
];
1100 static struct passwd dflt_passwd
=
1112 static char dflt_group_name
[GNLEN
+1];
1114 static struct group dflt_group
=
1116 /* When group information is not available, we return this as the
1117 group for all files. */
1125 return dflt_passwd
.pw_uid
;
1131 /* I could imagine arguing for checking to see whether the user is
1132 in the Administrators group and returning a UID of 0 for that
1133 case, but I don't know how wise that would be in the long run. */
1140 return dflt_passwd
.pw_gid
;
1150 getpwuid (unsigned uid
)
1152 if (uid
== dflt_passwd
.pw_uid
)
1153 return &dflt_passwd
;
1158 getgrgid (gid_t gid
)
1164 getpwnam (char *name
)
1168 pw
= getpwuid (getuid ());
1172 if (xstrcasecmp (name
, pw
->pw_name
))
1179 init_user_info (void)
1181 /* Find the user's real name by opening the process token and
1182 looking up the name associated with the user-sid in that token.
1184 Use the relative portion of the identifier authority value from
1185 the user-sid as the user id value (same for group id using the
1186 primary group sid from the process token). */
1188 char uname
[UNLEN
+1], gname
[GNLEN
+1], domain
[1025];
1189 DWORD ulength
= sizeof (uname
), dlength
= sizeof (domain
), needed
;
1190 DWORD glength
= sizeof (gname
);
1191 HANDLE token
= NULL
;
1192 SID_NAME_USE user_type
;
1193 unsigned char *buf
= NULL
;
1195 TOKEN_USER user_token
;
1196 TOKEN_PRIMARY_GROUP group_token
;
1199 result
= open_process_token (GetCurrentProcess (), TOKEN_QUERY
, &token
);
1202 result
= get_token_information (token
, TokenUser
, NULL
, 0, &blen
);
1203 if (!result
&& GetLastError () == ERROR_INSUFFICIENT_BUFFER
)
1205 buf
= xmalloc (blen
);
1206 result
= get_token_information (token
, TokenUser
,
1207 (LPVOID
)buf
, blen
, &needed
);
1210 memcpy (&user_token
, buf
, sizeof (user_token
));
1211 result
= lookup_account_sid (NULL
, user_token
.User
.Sid
,
1213 domain
, &dlength
, &user_type
);
1221 strcpy (dflt_passwd
.pw_name
, uname
);
1222 /* Determine a reasonable uid value. */
1223 if (xstrcasecmp ("administrator", uname
) == 0)
1225 dflt_passwd
.pw_uid
= 500; /* well-known Administrator uid */
1226 dflt_passwd
.pw_gid
= 513; /* well-known None gid */
1230 /* Use the last sub-authority value of the RID, the relative
1231 portion of the SID, as user/group ID. */
1232 dflt_passwd
.pw_uid
= get_rid (user_token
.User
.Sid
);
1234 /* Get group id and name. */
1235 result
= get_token_information (token
, TokenPrimaryGroup
,
1236 (LPVOID
)buf
, blen
, &needed
);
1237 if (!result
&& GetLastError () == ERROR_INSUFFICIENT_BUFFER
)
1239 buf
= xrealloc (buf
, blen
= needed
);
1240 result
= get_token_information (token
, TokenPrimaryGroup
,
1241 (LPVOID
)buf
, blen
, &needed
);
1245 memcpy (&group_token
, buf
, sizeof (group_token
));
1246 dflt_passwd
.pw_gid
= get_rid (group_token
.PrimaryGroup
);
1247 dlength
= sizeof (domain
);
1248 /* If we can get at the real Primary Group name, use that.
1249 Otherwise, the default group name was already set to
1250 "None" in globals_of_w32. */
1251 if (lookup_account_sid (NULL
, group_token
.PrimaryGroup
,
1252 gname
, &glength
, NULL
, &dlength
,
1254 strcpy (dflt_group_name
, gname
);
1257 dflt_passwd
.pw_gid
= dflt_passwd
.pw_uid
;
1260 /* If security calls are not supported (presumably because we
1261 are running under Windows 9X), fallback to this: */
1262 else if (GetUserName (uname
, &ulength
))
1264 strcpy (dflt_passwd
.pw_name
, uname
);
1265 if (xstrcasecmp ("administrator", uname
) == 0)
1266 dflt_passwd
.pw_uid
= 0;
1268 dflt_passwd
.pw_uid
= 123;
1269 dflt_passwd
.pw_gid
= dflt_passwd
.pw_uid
;
1273 strcpy (dflt_passwd
.pw_name
, "unknown");
1274 dflt_passwd
.pw_uid
= 123;
1275 dflt_passwd
.pw_gid
= 123;
1277 dflt_group
.gr_gid
= dflt_passwd
.pw_gid
;
1279 /* Ensure HOME and SHELL are defined. */
1280 if (getenv ("HOME") == NULL
)
1282 if (getenv ("SHELL") == NULL
)
1285 /* Set dir and shell from environment variables. */
1286 strcpy (dflt_passwd
.pw_dir
, getenv ("HOME"));
1287 strcpy (dflt_passwd
.pw_shell
, getenv ("SHELL"));
1291 CloseHandle (token
);
1297 /* rand () on NT gives us 15 random bits...hack together 30 bits. */
1298 return ((rand () << 15) | rand ());
1307 /* Current codepage for encoding file names. */
1308 static int file_name_codepage
;
1310 /* Return the maximum length in bytes of a multibyte character
1311 sequence encoded in the current ANSI codepage. This is required to
1312 correctly walk the encoded file names one character at a time. */
1314 max_filename_mbslen (void)
1316 /* A simple cache to avoid calling GetCPInfo every time we need to
1317 normalize a file name. The file-name encoding is not supposed to
1318 be changed too frequently, if ever. */
1319 static Lisp_Object last_file_name_encoding
;
1320 static int last_max_mbslen
;
1321 Lisp_Object current_encoding
;
1323 current_encoding
= Vfile_name_coding_system
;
1324 if (NILP (current_encoding
))
1325 current_encoding
= Vdefault_file_name_coding_system
;
1327 if (!EQ (last_file_name_encoding
, current_encoding
))
1331 last_file_name_encoding
= current_encoding
;
1332 /* Default to the current ANSI codepage. */
1333 file_name_codepage
= w32_ansi_code_page
;
1334 if (!NILP (current_encoding
))
1336 char *cpname
= SDATA (SYMBOL_NAME (current_encoding
));
1337 char *cp
= NULL
, *end
;
1340 if (strncmp (cpname
, "cp", 2) == 0)
1342 else if (strncmp (cpname
, "windows-", 8) == 0)
1348 cpnum
= strtol (cp
, &end
, 10);
1349 if (cpnum
&& *end
== '\0' && end
- cp
>= 2)
1350 file_name_codepage
= cpnum
;
1354 if (!file_name_codepage
)
1355 file_name_codepage
= CP_ACP
; /* CP_ACP = 0, but let's not assume that */
1357 if (!GetCPInfo (file_name_codepage
, &cp_info
))
1359 file_name_codepage
= CP_ACP
;
1360 if (!GetCPInfo (file_name_codepage
, &cp_info
))
1363 last_max_mbslen
= cp_info
.MaxCharSize
;
1366 return last_max_mbslen
;
1369 /* Normalize filename by converting all path separators to
1370 the specified separator. Also conditionally convert upper
1371 case path name components to lower case. */
1374 normalize_filename (register char *fp
, char path_sep
)
1378 int dbcs_p
= max_filename_mbslen () > 1;
1380 /* Always lower-case drive letters a-z, even if the filesystem
1381 preserves case in filenames.
1382 This is so filenames can be compared by string comparison
1383 functions that are case-sensitive. Even case-preserving filesystems
1384 do not distinguish case in drive letters. */
1386 p2
= CharNextExA (file_name_codepage
, fp
, 0);
1390 if (*p2
== ':' && *fp
>= 'A' && *fp
<= 'Z')
1396 if (NILP (Vw32_downcase_file_names
))
1400 if (*fp
== '/' || *fp
== '\\')
1405 fp
= CharNextExA (file_name_codepage
, fp
, 0);
1410 sep
= path_sep
; /* convert to this path separator */
1411 elem
= fp
; /* start of current path element */
1414 if (*fp
>= 'a' && *fp
<= 'z')
1415 elem
= 0; /* don't convert this element */
1417 if (*fp
== 0 || *fp
== ':')
1419 sep
= *fp
; /* restore current separator (or 0) */
1420 *fp
= '/'; /* after conversion of this element */
1423 if (*fp
== '/' || *fp
== '\\')
1425 if (elem
&& elem
!= fp
)
1427 *fp
= 0; /* temporary end of string */
1428 _mbslwr (elem
); /* while we convert to lower case */
1430 *fp
= sep
; /* convert (or restore) path separator */
1431 elem
= fp
+ 1; /* next element starts after separator */
1439 fp
= CharNextExA (file_name_codepage
, fp
, 0);
1444 /* Destructively turn backslashes into slashes. */
1446 dostounix_filename (register char *p
)
1448 normalize_filename (p
, '/');
1451 /* Destructively turn slashes into backslashes. */
1453 unixtodos_filename (register char *p
)
1455 normalize_filename (p
, '\\');
1458 /* Remove all CR's that are followed by a LF.
1459 (From msdos.c...probably should figure out a way to share it,
1460 although this code isn't going to ever change.) */
1462 crlf_to_lf (register int n
, register unsigned char *buf
)
1464 unsigned char *np
= buf
;
1465 unsigned char *startp
= buf
;
1466 unsigned char *endp
= buf
+ n
;
1470 while (buf
< endp
- 1)
1474 if (*(++buf
) != 0x0a)
1485 /* Parse the root part of file name, if present. Return length and
1486 optionally store pointer to char after root. */
1488 parse_root (char * name
, char ** pPath
)
1490 char * start
= name
;
1495 /* find the root name of the volume if given */
1496 if (isalpha (name
[0]) && name
[1] == ':')
1498 /* skip past drive specifier */
1500 if (IS_DIRECTORY_SEP (name
[0]))
1503 else if (IS_DIRECTORY_SEP (name
[0]) && IS_DIRECTORY_SEP (name
[1]))
1509 if (IS_DIRECTORY_SEP (*name
) && --slashes
== 0)
1514 if (IS_DIRECTORY_SEP (name
[0]))
1521 return name
- start
;
1524 /* Get long base name for name; name is assumed to be absolute. */
1526 get_long_basename (char * name
, char * buf
, int size
)
1528 WIN32_FIND_DATA find_data
;
1532 /* must be valid filename, no wild cards or other invalid characters */
1533 if (_mbspbrk (name
, "*?|<>\""))
1536 dir_handle
= FindFirstFile (name
, &find_data
);
1537 if (dir_handle
!= INVALID_HANDLE_VALUE
)
1539 if ((len
= strlen (find_data
.cFileName
)) < size
)
1540 memcpy (buf
, find_data
.cFileName
, len
+ 1);
1543 FindClose (dir_handle
);
1548 /* Get long name for file, if possible (assumed to be absolute). */
1550 w32_get_long_filename (char * name
, char * buf
, int size
)
1555 char full
[ MAX_PATH
];
1558 len
= strlen (name
);
1559 if (len
>= MAX_PATH
)
1562 /* Use local copy for destructive modification. */
1563 memcpy (full
, name
, len
+1);
1564 unixtodos_filename (full
);
1566 /* Copy root part verbatim. */
1567 len
= parse_root (full
, &p
);
1568 memcpy (o
, full
, len
);
1573 while (p
!= NULL
&& *p
)
1576 p
= strchr (q
, '\\');
1578 len
= get_long_basename (full
, o
, size
);
1601 is_unc_volume (const char *filename
)
1603 const char *ptr
= filename
;
1605 if (!IS_DIRECTORY_SEP (ptr
[0]) || !IS_DIRECTORY_SEP (ptr
[1]) || !ptr
[2])
1608 if (_mbspbrk (ptr
+ 2, "*?|<>\"\\/"))
1614 #define REG_ROOT "SOFTWARE\\GNU\\Emacs"
1617 w32_get_resource (char *key
, LPDWORD lpdwtype
)
1620 HKEY hrootkey
= NULL
;
1623 /* Check both the current user and the local machine to see if
1624 we have any resources. */
1626 if (RegOpenKeyEx (HKEY_CURRENT_USER
, REG_ROOT
, 0, KEY_READ
, &hrootkey
) == ERROR_SUCCESS
)
1630 if (RegQueryValueEx (hrootkey
, key
, NULL
, NULL
, NULL
, &cbData
) == ERROR_SUCCESS
1631 && (lpvalue
= xmalloc (cbData
)) != NULL
1632 && RegQueryValueEx (hrootkey
, key
, NULL
, lpdwtype
, lpvalue
, &cbData
) == ERROR_SUCCESS
)
1634 RegCloseKey (hrootkey
);
1640 RegCloseKey (hrootkey
);
1643 if (RegOpenKeyEx (HKEY_LOCAL_MACHINE
, REG_ROOT
, 0, KEY_READ
, &hrootkey
) == ERROR_SUCCESS
)
1647 if (RegQueryValueEx (hrootkey
, key
, NULL
, NULL
, NULL
, &cbData
) == ERROR_SUCCESS
1648 && (lpvalue
= xmalloc (cbData
)) != NULL
1649 && RegQueryValueEx (hrootkey
, key
, NULL
, lpdwtype
, lpvalue
, &cbData
) == ERROR_SUCCESS
)
1651 RegCloseKey (hrootkey
);
1657 RegCloseKey (hrootkey
);
1663 char *get_emacs_configuration (void);
1666 init_environment (char ** argv
)
1668 static const char * const tempdirs
[] = {
1669 "$TMPDIR", "$TEMP", "$TMP", "c:/"
1674 const int imax
= sizeof (tempdirs
) / sizeof (tempdirs
[0]);
1676 /* Make sure they have a usable $TMPDIR. Many Emacs functions use
1677 temporary files and assume "/tmp" if $TMPDIR is unset, which
1678 will break on DOS/Windows. Refuse to work if we cannot find
1679 a directory, not even "c:/", usable for that purpose. */
1680 for (i
= 0; i
< imax
; i
++)
1682 const char *tmp
= tempdirs
[i
];
1685 tmp
= getenv (tmp
+ 1);
1686 /* Note that `access' can lie to us if the directory resides on a
1687 read-only filesystem, like CD-ROM or a write-protected floppy.
1688 The only way to be really sure is to actually create a file and
1689 see if it succeeds. But I think that's too much to ask. */
1691 /* MSVCRT's _access crashes with D_OK. */
1692 if (tmp
&& sys_access (tmp
, D_OK
) == 0)
1694 char * var
= alloca (strlen (tmp
) + 8);
1695 sprintf (var
, "TMPDIR=%s", tmp
);
1696 _putenv (strdup (var
));
1703 Fcons (build_string ("no usable temporary directories found!!"),
1705 "While setting TMPDIR: ");
1707 /* Check for environment variables and use registry settings if they
1708 don't exist. Fallback on default values where applicable. */
1713 char locale_name
[32];
1714 char default_home
[MAX_PATH
];
1717 static const struct env_entry
1723 /* If the default value is NULL, we will use the value from the
1724 outside environment or the Registry, but will not push the
1725 variable into the Emacs environment if it is defined neither
1726 in the Registry nor in the outside environment. */
1728 {"PRELOAD_WINSOCK", NULL
},
1729 {"emacs_dir", "C:/emacs"},
1730 {"EMACSLOADPATH", NULL
},
1731 {"SHELL", "%emacs_dir%/bin/cmdproxy.exe"},
1732 {"EMACSDATA", NULL
},
1733 {"EMACSPATH", NULL
},
1740 #define N_ENV_VARS sizeof (dflt_envvars)/sizeof (dflt_envvars[0])
1742 /* We need to copy dflt_envvars[] and work on the copy because we
1743 don't want the dumped Emacs to inherit the values of
1744 environment variables we saw during dumping (which could be on
1745 a different system). The defaults above must be left intact. */
1746 struct env_entry env_vars
[N_ENV_VARS
];
1748 for (i
= 0; i
< N_ENV_VARS
; i
++)
1749 env_vars
[i
] = dflt_envvars
[i
];
1751 /* For backwards compatibility, check if a .emacs file exists in C:/
1752 If not, then we can try to default to the appdata directory under the
1753 user's profile, which is more likely to be writable. */
1754 if (!check_existing ("C:/.emacs"))
1756 HRESULT profile_result
;
1757 /* Dynamically load ShGetFolderPath, as it won't exist on versions
1758 of Windows 95 and NT4 that have not been updated to include
1760 ShGetFolderPath_fn get_folder_path
;
1761 get_folder_path
= (ShGetFolderPath_fn
)
1762 GetProcAddress (GetModuleHandle ("shell32.dll"), "SHGetFolderPathA");
1764 if (get_folder_path
!= NULL
)
1766 profile_result
= get_folder_path (NULL
, CSIDL_APPDATA
, NULL
,
1769 /* If we can't get the appdata dir, revert to old behavior. */
1770 if (profile_result
== S_OK
)
1772 env_vars
[0].def_value
= default_home
;
1778 /* Get default locale info and use it for LANG. */
1779 if (GetLocaleInfo (LOCALE_USER_DEFAULT
,
1780 LOCALE_SABBREVLANGNAME
| LOCALE_USE_CP_ACP
,
1781 locale_name
, sizeof (locale_name
)))
1783 for (i
= 0; i
< N_ENV_VARS
; i
++)
1785 if (strcmp (env_vars
[i
].name
, "LANG") == 0)
1787 env_vars
[i
].def_value
= locale_name
;
1793 #define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */
1795 /* Treat emacs_dir specially: set it unconditionally based on our
1799 char modname
[MAX_PATH
];
1801 if (!GetModuleFileName (NULL
, modname
, MAX_PATH
))
1803 if ((p
= strrchr (modname
, '\\')) == NULL
)
1807 if ((p
= strrchr (modname
, '\\')) && xstrcasecmp (p
, "\\bin") == 0)
1809 char buf
[SET_ENV_BUF_SIZE
];
1812 for (p
= modname
; *p
; p
++)
1813 if (*p
== '\\') *p
= '/';
1815 _snprintf (buf
, sizeof (buf
)-1, "emacs_dir=%s", modname
);
1816 _putenv (strdup (buf
));
1818 /* Handle running emacs from the build directory: src/oo-spd/i386/ */
1820 /* FIXME: should use substring of get_emacs_configuration ().
1821 But I don't think the Windows build supports alpha, mips etc
1822 anymore, so have taken the easy option for now. */
1823 else if (p
&& (xstrcasecmp (p
, "\\i386") == 0
1824 || xstrcasecmp (p
, "\\AMD64") == 0))
1827 p
= strrchr (modname
, '\\');
1831 p
= strrchr (modname
, '\\');
1832 if (p
&& xstrcasecmp (p
, "\\src") == 0)
1834 char buf
[SET_ENV_BUF_SIZE
];
1837 for (p
= modname
; *p
; p
++)
1838 if (*p
== '\\') *p
= '/';
1840 _snprintf (buf
, sizeof (buf
)-1, "emacs_dir=%s", modname
);
1841 _putenv (strdup (buf
));
1847 for (i
= 0; i
< N_ENV_VARS
; i
++)
1849 if (!getenv (env_vars
[i
].name
))
1853 if ((lpval
= w32_get_resource (env_vars
[i
].name
, &dwType
)) == NULL
1854 /* Also ignore empty environment variables. */
1858 lpval
= env_vars
[i
].def_value
;
1859 dwType
= REG_EXPAND_SZ
;
1861 if (!strcmp (env_vars
[i
].name
, "HOME") && !appdata
)
1862 Vdelayed_warnings_list
1863 = Fcons (listn (CONSTYPE_HEAP
, 2,
1864 intern ("initialization"),
1865 build_string ("Setting HOME to C:\\ by default is deprecated")),
1866 Vdelayed_warnings_list
);
1871 char buf1
[SET_ENV_BUF_SIZE
], buf2
[SET_ENV_BUF_SIZE
];
1873 if (dwType
== REG_EXPAND_SZ
)
1874 ExpandEnvironmentStrings ((LPSTR
) lpval
, buf1
, sizeof (buf1
));
1875 else if (dwType
== REG_SZ
)
1876 strcpy (buf1
, lpval
);
1877 if (dwType
== REG_EXPAND_SZ
|| dwType
== REG_SZ
)
1879 _snprintf (buf2
, sizeof (buf2
)-1, "%s=%s", env_vars
[i
].name
,
1881 _putenv (strdup (buf2
));
1891 /* Rebuild system configuration to reflect invoking system. */
1892 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
1894 /* Another special case: on NT, the PATH variable is actually named
1895 "Path" although cmd.exe (perhaps NT itself) arranges for
1896 environment variable lookup and setting to be case insensitive.
1897 However, Emacs assumes a fully case sensitive environment, so we
1898 need to change "Path" to "PATH" to match the expectations of
1899 various elisp packages. We do this by the sneaky method of
1900 modifying the string in the C runtime environ entry.
1902 The same applies to COMSPEC. */
1906 for (envp
= environ
; *envp
; envp
++)
1907 if (_strnicmp (*envp
, "PATH=", 5) == 0)
1908 memcpy (*envp
, "PATH=", 5);
1909 else if (_strnicmp (*envp
, "COMSPEC=", 8) == 0)
1910 memcpy (*envp
, "COMSPEC=", 8);
1913 /* Remember the initial working directory for getwd. */
1914 /* FIXME: Do we need to resolve possible symlinks in startup_dir?
1915 Does it matter anywhere in Emacs? */
1916 if (!GetCurrentDirectory (MAXPATHLEN
, startup_dir
))
1920 static char modname
[MAX_PATH
];
1922 if (!GetModuleFileName (NULL
, modname
, MAX_PATH
))
1927 /* Determine if there is a middle mouse button, to allow parse_button
1928 to decide whether right mouse events should be mouse-2 or
1930 w32_num_mouse_buttons
= GetSystemMetrics (SM_CMOUSEBUTTONS
);
1935 /* Called from expand-file-name when default-directory is not a string. */
1938 emacs_root_dir (void)
1940 static char root_dir
[FILENAME_MAX
];
1943 p
= getenv ("emacs_dir");
1946 strcpy (root_dir
, p
);
1947 root_dir
[parse_root (root_dir
, NULL
)] = '\0';
1948 dostounix_filename (root_dir
);
1952 /* We don't have scripts to automatically determine the system configuration
1953 for Emacs before it's compiled, and we don't want to have to make the
1954 user enter it, so we define EMACS_CONFIGURATION to invoke this runtime
1958 get_emacs_configuration (void)
1960 char *arch
, *oem
, *os
;
1962 static char configuration_buffer
[32];
1964 /* Determine the processor type. */
1965 switch (get_processor_type ())
1968 #ifdef PROCESSOR_INTEL_386
1969 case PROCESSOR_INTEL_386
:
1970 case PROCESSOR_INTEL_486
:
1971 case PROCESSOR_INTEL_PENTIUM
:
1979 #ifdef PROCESSOR_AMD_X8664
1980 case PROCESSOR_AMD_X8664
:
1985 #ifdef PROCESSOR_MIPS_R2000
1986 case PROCESSOR_MIPS_R2000
:
1987 case PROCESSOR_MIPS_R3000
:
1988 case PROCESSOR_MIPS_R4000
:
1993 #ifdef PROCESSOR_ALPHA_21064
1994 case PROCESSOR_ALPHA_21064
:
2004 /* Use the OEM field to reflect the compiler/library combination. */
2006 #define COMPILER_NAME "msvc"
2009 #define COMPILER_NAME "mingw"
2011 #define COMPILER_NAME "unknown"
2014 oem
= COMPILER_NAME
;
2016 switch (osinfo_cache
.dwPlatformId
) {
2017 case VER_PLATFORM_WIN32_NT
:
2019 build_num
= osinfo_cache
.dwBuildNumber
;
2021 case VER_PLATFORM_WIN32_WINDOWS
:
2022 if (osinfo_cache
.dwMinorVersion
== 0) {
2027 build_num
= LOWORD (osinfo_cache
.dwBuildNumber
);
2029 case VER_PLATFORM_WIN32s
:
2030 /* Not supported, should not happen. */
2032 build_num
= LOWORD (osinfo_cache
.dwBuildNumber
);
2040 if (osinfo_cache
.dwPlatformId
== VER_PLATFORM_WIN32_NT
) {
2041 sprintf (configuration_buffer
, "%s-%s-%s%d.%d.%d", arch
, oem
, os
,
2042 get_w32_major_version (), get_w32_minor_version (), build_num
);
2044 sprintf (configuration_buffer
, "%s-%s-%s.%d", arch
, oem
, os
, build_num
);
2047 return configuration_buffer
;
2051 get_emacs_configuration_options (void)
2053 static char *options_buffer
;
2054 char cv
[32]; /* Enough for COMPILER_VERSION. */
2056 cv
, /* To be filled later. */
2060 #ifdef ENABLE_CHECKING
2061 " --enable-checking",
2063 /* configure.bat already sets USER_CFLAGS and USER_LDFLAGS
2064 with a starting space to save work here. */
2066 " --cflags", USER_CFLAGS
,
2069 " --ldflags", USER_LDFLAGS
,
2076 /* Work out the effective configure options for this build. */
2078 #define COMPILER_VERSION "--with-msvc (%d.%02d)", _MSC_VER / 100, _MSC_VER % 100
2081 #define COMPILER_VERSION "--with-gcc (%d.%d)", __GNUC__, __GNUC_MINOR__
2083 #define COMPILER_VERSION ""
2087 if (_snprintf (cv
, sizeof (cv
) - 1, COMPILER_VERSION
) < 0)
2088 return "Error: not enough space for compiler version";
2089 cv
[sizeof (cv
) - 1] = '\0';
2091 for (i
= 0; options
[i
]; i
++)
2092 size
+= strlen (options
[i
]);
2094 options_buffer
= xmalloc (size
+ 1);
2095 options_buffer
[0] = '\0';
2097 for (i
= 0; options
[i
]; i
++)
2098 strcat (options_buffer
, options
[i
]);
2100 return options_buffer
;
2104 #include <sys/timeb.h>
2106 /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */
2108 gettimeofday (struct timeval
*tv
, struct timezone
*tz
)
2113 tv
->tv_sec
= tb
.time
;
2114 tv
->tv_usec
= tb
.millitm
* 1000L;
2115 /* Implementation note: _ftime sometimes doesn't update the dstflag
2116 according to the new timezone when the system timezone is
2117 changed. We could fix that by using GetSystemTime and
2118 GetTimeZoneInformation, but that doesn't seem necessary, since
2119 Emacs always calls gettimeofday with the 2nd argument NULL (see
2120 current_emacs_time). */
2123 tz
->tz_minuteswest
= tb
.timezone
; /* minutes west of Greenwich */
2124 tz
->tz_dsttime
= tb
.dstflag
; /* type of dst correction */
2128 /* Emulate fdutimens. */
2130 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2131 TIMESPEC[0] and TIMESPEC[1], respectively.
2132 FD must be either negative -- in which case it is ignored --
2133 or a file descriptor that is open on FILE.
2134 If FD is nonnegative, then FILE can be NULL, which means
2135 use just futimes instead of utimes.
2136 If TIMESPEC is null, FAIL.
2137 Return 0 on success, -1 (setting errno) on failure. */
2140 fdutimens (int fd
, char const *file
, struct timespec
const timespec
[2])
2149 if (fd
< 0 && !file
)
2154 ut
.actime
= timespec
[0].tv_sec
;
2155 ut
.modtime
= timespec
[1].tv_sec
;
2157 return _futime (fd
, &ut
);
2159 return _utime (file
, &ut
);
2163 /* ------------------------------------------------------------------------- */
2164 /* IO support and wrapper functions for the Windows API. */
2165 /* ------------------------------------------------------------------------- */
2167 /* Place a wrapper around the MSVC version of ctime. It returns NULL
2168 on network directories, so we handle that case here.
2169 (Ulrich Leodolter, 1/11/95). */
2171 sys_ctime (const time_t *t
)
2173 char *str
= (char *) ctime (t
);
2174 return (str
? str
: "Sun Jan 01 00:00:00 1970");
2177 /* Emulate sleep...we could have done this with a define, but that
2178 would necessitate including windows.h in the files that used it.
2179 This is much easier. */
2181 sys_sleep (int seconds
)
2183 Sleep (seconds
* 1000);
2186 /* Internal MSVC functions for low-level descriptor munging */
2187 extern int __cdecl
_set_osfhnd (int fd
, long h
);
2188 extern int __cdecl
_free_osfhnd (int fd
);
2190 /* parallel array of private info on file handles */
2191 filedesc fd_info
[ MAXDESC
];
2193 typedef struct volume_info_data
{
2194 struct volume_info_data
* next
;
2196 /* time when info was obtained */
2199 /* actual volume info */
2208 /* Global referenced by various functions. */
2209 static volume_info_data volume_info
;
2211 /* Vector to indicate which drives are local and fixed (for which cached
2212 data never expires). */
2213 static BOOL fixed_drives
[26];
2215 /* Consider cached volume information to be stale if older than 10s,
2216 at least for non-local drives. Info for fixed drives is never stale. */
2217 #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' )
2218 #define VOLINFO_STILL_VALID( root_dir, info ) \
2219 ( ( isalpha (root_dir[0]) && \
2220 fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \
2221 || GetTickCount () - info->timestamp < 10000 )
2223 /* Cache support functions. */
2225 /* Simple linked list with linear search is sufficient. */
2226 static volume_info_data
*volume_cache
= NULL
;
2228 static volume_info_data
*
2229 lookup_volume_info (char * root_dir
)
2231 volume_info_data
* info
;
2233 for (info
= volume_cache
; info
; info
= info
->next
)
2234 if (xstrcasecmp (info
->root_dir
, root_dir
) == 0)
2240 add_volume_info (char * root_dir
, volume_info_data
* info
)
2242 info
->root_dir
= xstrdup (root_dir
);
2243 info
->next
= volume_cache
;
2244 volume_cache
= info
;
2248 /* Wrapper for GetVolumeInformation, which uses caching to avoid
2249 performance penalty (~2ms on 486 for local drives, 7.5ms for local
2250 cdrom drive, ~5-10ms or more for remote drives on LAN). */
2251 static volume_info_data
*
2252 GetCachedVolumeInformation (char * root_dir
)
2254 volume_info_data
* info
;
2255 char default_root
[ MAX_PATH
];
2257 /* NULL for root_dir means use root from current directory. */
2258 if (root_dir
== NULL
)
2260 if (GetCurrentDirectory (MAX_PATH
, default_root
) == 0)
2262 parse_root (default_root
, &root_dir
);
2264 root_dir
= default_root
;
2267 /* Local fixed drives can be cached permanently. Removable drives
2268 cannot be cached permanently, since the volume name and serial
2269 number (if nothing else) can change. Remote drives should be
2270 treated as if they are removable, since there is no sure way to
2271 tell whether they are or not. Also, the UNC association of drive
2272 letters mapped to remote volumes can be changed at any time (even
2273 by other processes) without notice.
2275 As a compromise, so we can benefit from caching info for remote
2276 volumes, we use a simple expiry mechanism to invalidate cache
2277 entries that are more than ten seconds old. */
2280 /* No point doing this, because WNetGetConnection is even slower than
2281 GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW,
2282 GetDriveType is about the only call of this type which does not
2283 involve network access, and so is extremely quick). */
2285 /* Map drive letter to UNC if remote. */
2286 if (isalpha (root_dir
[0]) && !fixed
[DRIVE_INDEX (root_dir
[0])])
2288 char remote_name
[ 256 ];
2289 char drive
[3] = { root_dir
[0], ':' };
2291 if (WNetGetConnection (drive
, remote_name
, sizeof (remote_name
))
2293 /* do something */ ;
2297 info
= lookup_volume_info (root_dir
);
2299 if (info
== NULL
|| ! VOLINFO_STILL_VALID (root_dir
, info
))
2307 /* Info is not cached, or is stale. */
2308 if (!GetVolumeInformation (root_dir
,
2309 name
, sizeof (name
),
2313 type
, sizeof (type
)))
2316 /* Cache the volume information for future use, overwriting existing
2317 entry if present. */
2320 info
= xmalloc (sizeof (volume_info_data
));
2321 add_volume_info (root_dir
, info
);
2329 info
->name
= xstrdup (name
);
2330 info
->serialnum
= serialnum
;
2331 info
->maxcomp
= maxcomp
;
2332 info
->flags
= flags
;
2333 info
->type
= xstrdup (type
);
2334 info
->timestamp
= GetTickCount ();
2340 /* Get information on the volume where NAME is held; set path pointer to
2341 start of pathname in NAME (past UNC header\volume header if present),
2342 if pPath is non-NULL.
2344 Note: if NAME includes symlinks, the information is for the volume
2345 of the symlink, not of its target. That's because, even though
2346 GetVolumeInformation returns information about the symlink target
2347 of its argument, we only pass the root directory to
2348 GetVolumeInformation, not the full NAME. */
2350 get_volume_info (const char * name
, const char ** pPath
)
2352 char temp
[MAX_PATH
];
2353 char *rootname
= NULL
; /* default to current volume */
2354 volume_info_data
* info
;
2359 /* Find the root name of the volume if given. */
2360 if (isalpha (name
[0]) && name
[1] == ':')
2368 else if (IS_DIRECTORY_SEP (name
[0]) && IS_DIRECTORY_SEP (name
[1]))
2375 if (IS_DIRECTORY_SEP (*name
) && --slashes
== 0)
2388 info
= GetCachedVolumeInformation (rootname
);
2391 /* Set global referenced by other functions. */
2392 volume_info
= *info
;
2398 /* Determine if volume is FAT format (ie. only supports short 8.3
2399 names); also set path pointer to start of pathname in name, if
2400 pPath is non-NULL. */
2402 is_fat_volume (const char * name
, const char ** pPath
)
2404 if (get_volume_info (name
, pPath
))
2405 return (volume_info
.maxcomp
== 12);
2409 /* Map filename to a valid 8.3 name if necessary.
2410 The result is a pointer to a static buffer, so CAVEAT EMPTOR! */
2412 map_w32_filename (const char * name
, const char ** pPath
)
2414 static char shortname
[MAX_PATH
];
2415 char * str
= shortname
;
2418 const char * save_name
= name
;
2420 if (strlen (name
) >= MAX_PATH
)
2422 /* Return a filename which will cause callers to fail. */
2423 strcpy (shortname
, "?");
2427 if (is_fat_volume (name
, (const char **)&path
)) /* truncate to 8.3 */
2429 register int left
= 8; /* maximum number of chars in part */
2430 register int extn
= 0; /* extension added? */
2431 register int dots
= 2; /* maximum number of dots allowed */
2434 *str
++ = *name
++; /* skip past UNC header */
2436 while ((c
= *name
++))
2443 *str
++ = (c
== ':' ? ':' : '\\');
2444 extn
= 0; /* reset extension flags */
2445 dots
= 2; /* max 2 dots */
2446 left
= 8; /* max length 8 for main part */
2451 /* Convert path components of the form .xxx to _xxx,
2452 but leave . and .. as they are. This allows .emacs
2453 to be read as _emacs, for example. */
2457 IS_DIRECTORY_SEP (*name
))
2472 extn
= 1; /* we've got an extension */
2473 left
= 3; /* 3 chars in extension */
2477 /* any embedded dots after the first are converted to _ */
2482 case '#': /* don't lose these, they're important */
2484 str
[-1] = c
; /* replace last character of part */
2489 *str
++ = tolower (c
); /* map to lower case (looks nicer) */
2491 dots
= 0; /* started a path component */
2500 strcpy (shortname
, name
);
2501 unixtodos_filename (shortname
);
2505 *pPath
= shortname
+ (path
- save_name
);
2511 is_exec (const char * name
)
2513 char * p
= strrchr (name
, '.');
2516 && (xstrcasecmp (p
, ".exe") == 0 ||
2517 xstrcasecmp (p
, ".com") == 0 ||
2518 xstrcasecmp (p
, ".bat") == 0 ||
2519 xstrcasecmp (p
, ".cmd") == 0));
2522 /* Emulate the Unix directory procedures opendir, closedir,
2523 and readdir. We can't use the procedures supplied in sysdep.c,
2524 so we provide them here. */
2526 struct direct dir_static
; /* simulated directory contents */
2527 static HANDLE dir_find_handle
= INVALID_HANDLE_VALUE
;
2528 static int dir_is_fat
;
2529 static char dir_pathname
[MAXPATHLEN
+1];
2530 static WIN32_FIND_DATA dir_find_data
;
2532 /* Support shares on a network resource as subdirectories of a read-only
2534 static HANDLE wnet_enum_handle
= INVALID_HANDLE_VALUE
;
2535 static HANDLE
open_unc_volume (const char *);
2536 static char *read_unc_volume (HANDLE
, char *, int);
2537 static void close_unc_volume (HANDLE
);
2540 opendir (char *filename
)
2544 /* Opening is done by FindFirstFile. However, a read is inherent to
2545 this operation, so we defer the open until read time. */
2547 if (dir_find_handle
!= INVALID_HANDLE_VALUE
)
2549 if (wnet_enum_handle
!= INVALID_HANDLE_VALUE
)
2552 /* Note: We don't support traversal of UNC volumes via symlinks.
2553 Doing so would mean punishing 99.99% of use cases by resolving
2554 all the possible symlinks in FILENAME, recursively. */
2555 if (is_unc_volume (filename
))
2557 wnet_enum_handle
= open_unc_volume (filename
);
2558 if (wnet_enum_handle
== INVALID_HANDLE_VALUE
)
2562 if (!(dirp
= (DIR *) malloc (sizeof (DIR))))
2569 strncpy (dir_pathname
, map_w32_filename (filename
, NULL
), MAXPATHLEN
);
2570 dir_pathname
[MAXPATHLEN
] = '\0';
2571 /* Note: We don't support symlinks to file names on FAT volumes.
2572 Doing so would mean punishing 99.99% of use cases by resolving
2573 all the possible symlinks in FILENAME, recursively. */
2574 dir_is_fat
= is_fat_volume (filename
, NULL
);
2580 closedir (DIR *dirp
)
2582 /* If we have a find-handle open, close it. */
2583 if (dir_find_handle
!= INVALID_HANDLE_VALUE
)
2585 FindClose (dir_find_handle
);
2586 dir_find_handle
= INVALID_HANDLE_VALUE
;
2588 else if (wnet_enum_handle
!= INVALID_HANDLE_VALUE
)
2590 close_unc_volume (wnet_enum_handle
);
2591 wnet_enum_handle
= INVALID_HANDLE_VALUE
;
2593 xfree ((char *) dirp
);
2599 int downcase
= !NILP (Vw32_downcase_file_names
);
2601 if (wnet_enum_handle
!= INVALID_HANDLE_VALUE
)
2603 if (!read_unc_volume (wnet_enum_handle
,
2604 dir_find_data
.cFileName
,
2608 /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */
2609 else if (dir_find_handle
== INVALID_HANDLE_VALUE
)
2611 char filename
[MAXNAMLEN
+ 3];
2614 strcpy (filename
, dir_pathname
);
2615 ln
= strlen (filename
) - 1;
2616 if (!IS_DIRECTORY_SEP (filename
[ln
]))
2617 strcat (filename
, "\\");
2618 strcat (filename
, "*");
2620 /* Note: No need to resolve symlinks in FILENAME, because
2621 FindFirst opens the directory that is the target of a
2623 dir_find_handle
= FindFirstFile (filename
, &dir_find_data
);
2625 if (dir_find_handle
== INVALID_HANDLE_VALUE
)
2630 if (!FindNextFile (dir_find_handle
, &dir_find_data
))
2634 /* Emacs never uses this value, so don't bother making it match
2635 value returned by stat(). */
2636 dir_static
.d_ino
= 1;
2638 strcpy (dir_static
.d_name
, dir_find_data
.cFileName
);
2640 /* If the file name in cFileName[] includes `?' characters, it means
2641 the original file name used characters that cannot be represented
2642 by the current ANSI codepage. To avoid total lossage, retrieve
2643 the short 8+3 alias of the long file name. */
2644 if (_mbspbrk (dir_static
.d_name
, "?"))
2646 strcpy (dir_static
.d_name
, dir_find_data
.cAlternateFileName
);
2647 downcase
= 1; /* 8+3 aliases are returned in all caps */
2649 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
2650 dir_static
.d_reclen
= sizeof (struct direct
) - MAXNAMLEN
+ 3 +
2651 dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
2653 /* If the file name in cFileName[] includes `?' characters, it means
2654 the original file name used characters that cannot be represented
2655 by the current ANSI codepage. To avoid total lossage, retrieve
2656 the short 8+3 alias of the long file name. */
2657 if (_mbspbrk (dir_find_data
.cFileName
, "?"))
2659 strcpy (dir_static
.d_name
, dir_find_data
.cAlternateFileName
);
2660 /* 8+3 aliases are returned in all caps, which could break
2661 various alists that look at filenames' extensions. */
2665 strcpy (dir_static
.d_name
, dir_find_data
.cFileName
);
2666 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
2668 _mbslwr (dir_static
.d_name
);
2672 int dbcs_p
= max_filename_mbslen () > 1;
2673 for (p
= dir_static
.d_name
; *p
; )
2675 if (*p
>= 'a' && *p
<= 'z')
2678 p
= CharNextExA (file_name_codepage
, p
, 0);
2683 _mbslwr (dir_static
.d_name
);
2690 open_unc_volume (const char *path
)
2696 nr
.dwScope
= RESOURCE_GLOBALNET
;
2697 nr
.dwType
= RESOURCETYPE_DISK
;
2698 nr
.dwDisplayType
= RESOURCEDISPLAYTYPE_SERVER
;
2699 nr
.dwUsage
= RESOURCEUSAGE_CONTAINER
;
2700 nr
.lpLocalName
= NULL
;
2701 nr
.lpRemoteName
= (LPSTR
)map_w32_filename (path
, NULL
);
2702 nr
.lpComment
= NULL
;
2703 nr
.lpProvider
= NULL
;
2705 result
= WNetOpenEnum (RESOURCE_GLOBALNET
, RESOURCETYPE_DISK
,
2706 RESOURCEUSAGE_CONNECTABLE
, &nr
, &henum
);
2708 if (result
== NO_ERROR
)
2711 return INVALID_HANDLE_VALUE
;
2715 read_unc_volume (HANDLE henum
, char *readbuf
, int size
)
2719 DWORD bufsize
= 512;
2724 buffer
= alloca (bufsize
);
2725 result
= WNetEnumResource (henum
, &count
, buffer
, &bufsize
);
2726 if (result
!= NO_ERROR
)
2729 /* WNetEnumResource returns \\resource\share...skip forward to "share". */
2730 ptr
= ((LPNETRESOURCE
) buffer
)->lpRemoteName
;
2732 while (*ptr
&& !IS_DIRECTORY_SEP (*ptr
)) ptr
++;
2735 strncpy (readbuf
, ptr
, size
);
2740 close_unc_volume (HANDLE henum
)
2742 if (henum
!= INVALID_HANDLE_VALUE
)
2743 WNetCloseEnum (henum
);
2747 unc_volume_file_attributes (const char *path
)
2752 henum
= open_unc_volume (path
);
2753 if (henum
== INVALID_HANDLE_VALUE
)
2756 attrs
= FILE_ATTRIBUTE_READONLY
| FILE_ATTRIBUTE_DIRECTORY
;
2758 close_unc_volume (henum
);
2763 /* Ensure a network connection is authenticated. */
2765 logon_network_drive (const char *path
)
2767 NETRESOURCE resource
;
2768 char share
[MAX_PATH
];
2773 if (IS_DIRECTORY_SEP (path
[0]) && IS_DIRECTORY_SEP (path
[1]))
2774 drvtype
= DRIVE_REMOTE
;
2775 else if (path
[0] == '\0' || path
[1] != ':')
2776 drvtype
= GetDriveType (NULL
);
2783 drvtype
= GetDriveType (drive
);
2786 /* Only logon to networked drives. */
2787 if (drvtype
!= DRIVE_REMOTE
)
2791 strncpy (share
, path
, MAX_PATH
);
2792 /* Truncate to just server and share name. */
2793 for (i
= 2; i
< MAX_PATH
; i
++)
2795 if (IS_DIRECTORY_SEP (share
[i
]) && ++n_slashes
> 3)
2802 resource
.dwType
= RESOURCETYPE_DISK
;
2803 resource
.lpLocalName
= NULL
;
2804 resource
.lpRemoteName
= share
;
2805 resource
.lpProvider
= NULL
;
2807 WNetAddConnection2 (&resource
, NULL
, NULL
, CONNECT_INTERACTIVE
);
2810 /* Shadow some MSVC runtime functions to map requests for long filenames
2811 to reasonable short names if necessary. This was originally added to
2812 permit running Emacs on NT 3.1 on a FAT partition, which doesn't support
2816 sys_access (const char * path
, int mode
)
2820 /* MSVCRT implementation of 'access' doesn't recognize D_OK, and its
2821 newer versions blow up when passed D_OK. */
2822 path
= map_w32_filename (path
, NULL
);
2823 /* If the last element of PATH is a symlink, we need to resolve it
2824 to get the attributes of its target file. Note: any symlinks in
2825 PATH elements other than the last one are transparently resolved
2826 by GetFileAttributes below. */
2827 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) != 0)
2828 path
= chase_symlinks (path
);
2830 if ((attributes
= GetFileAttributes (path
)) == -1)
2832 DWORD w32err
= GetLastError ();
2836 case ERROR_INVALID_NAME
:
2837 case ERROR_BAD_PATHNAME
:
2838 if (is_unc_volume (path
))
2840 attributes
= unc_volume_file_attributes (path
);
2841 if (attributes
== -1)
2849 case ERROR_FILE_NOT_FOUND
:
2850 case ERROR_BAD_NETPATH
:
2859 if ((mode
& X_OK
) != 0 && !is_exec (path
))
2864 if ((mode
& W_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_READONLY
) != 0)
2869 if ((mode
& D_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
) == 0)
2878 sys_chdir (const char * path
)
2880 return _chdir (map_w32_filename (path
, NULL
));
2884 sys_chmod (const char * path
, int mode
)
2886 path
= chase_symlinks (map_w32_filename (path
, NULL
));
2887 return _chmod (path
, mode
);
2891 sys_chown (const char *path
, uid_t owner
, gid_t group
)
2893 if (sys_chmod (path
, S_IREAD
) == -1) /* check if file exists */
2899 sys_creat (const char * path
, int mode
)
2901 return _creat (map_w32_filename (path
, NULL
), mode
);
2905 sys_fopen (const char * path
, const char * mode
)
2909 const char * mode_save
= mode
;
2911 /* Force all file handles to be non-inheritable. This is necessary to
2912 ensure child processes don't unwittingly inherit handles that might
2913 prevent future file access. */
2917 else if (mode
[0] == 'w' || mode
[0] == 'a')
2918 oflag
= O_WRONLY
| O_CREAT
| O_TRUNC
;
2922 /* Only do simplistic option parsing. */
2926 oflag
&= ~(O_RDONLY
| O_WRONLY
);
2929 else if (mode
[0] == 'b')
2934 else if (mode
[0] == 't')
2941 fd
= _open (map_w32_filename (path
, NULL
), oflag
| _O_NOINHERIT
, 0644);
2945 return _fdopen (fd
, mode_save
);
2948 /* This only works on NTFS volumes, but is useful to have. */
2950 sys_link (const char * old
, const char * new)
2954 char oldname
[MAX_PATH
], newname
[MAX_PATH
];
2956 if (old
== NULL
|| new == NULL
)
2962 strcpy (oldname
, map_w32_filename (old
, NULL
));
2963 strcpy (newname
, map_w32_filename (new, NULL
));
2965 fileh
= CreateFile (oldname
, 0, 0, NULL
, OPEN_EXISTING
,
2966 FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
2967 if (fileh
!= INVALID_HANDLE_VALUE
)
2971 /* Confusingly, the "alternate" stream name field does not apply
2972 when restoring a hard link, and instead contains the actual
2973 stream data for the link (ie. the name of the link to create).
2974 The WIN32_STREAM_ID structure before the cStreamName field is
2975 the stream header, which is then immediately followed by the
2979 WIN32_STREAM_ID wid
;
2980 WCHAR wbuffer
[MAX_PATH
]; /* extra space for link name */
2983 wlen
= MultiByteToWideChar (CP_ACP
, MB_PRECOMPOSED
, newname
, -1,
2984 data
.wid
.cStreamName
, MAX_PATH
);
2987 LPVOID context
= NULL
;
2990 data
.wid
.dwStreamId
= BACKUP_LINK
;
2991 data
.wid
.dwStreamAttributes
= 0;
2992 data
.wid
.Size
.LowPart
= wlen
* sizeof (WCHAR
);
2993 data
.wid
.Size
.HighPart
= 0;
2994 data
.wid
.dwStreamNameSize
= 0;
2996 if (BackupWrite (fileh
, (LPBYTE
)&data
,
2997 offsetof (WIN32_STREAM_ID
, cStreamName
)
2998 + data
.wid
.Size
.LowPart
,
2999 &wbytes
, FALSE
, FALSE
, &context
)
3000 && BackupWrite (fileh
, NULL
, 0, &wbytes
, TRUE
, FALSE
, &context
))
3007 /* Should try mapping GetLastError to errno; for now just
3008 indicate a general error (eg. links not supported). */
3009 errno
= EINVAL
; // perhaps EMLINK?
3013 CloseHandle (fileh
);
3022 sys_mkdir (const char * path
)
3024 return _mkdir (map_w32_filename (path
, NULL
));
3027 /* Because of long name mapping issues, we need to implement this
3028 ourselves. Also, MSVC's _mktemp returns NULL when it can't generate
3029 a unique name, instead of setting the input template to an empty
3032 Standard algorithm seems to be use pid or tid with a letter on the
3033 front (in place of the 6 X's) and cycle through the letters to find a
3034 unique name. We extend that to allow any reasonable character as the
3035 first of the 6 X's. */
3037 sys_mktemp (char * template)
3041 unsigned uid
= GetCurrentThreadId ();
3042 static char first_char
[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#";
3044 if (template == NULL
)
3046 p
= template + strlen (template);
3048 /* replace up to the last 5 X's with uid in decimal */
3049 while (--p
>= template && p
[0] == 'X' && --i
>= 0)
3051 p
[0] = '0' + uid
% 10;
3055 if (i
< 0 && p
[0] == 'X')
3060 int save_errno
= errno
;
3061 p
[0] = first_char
[i
];
3062 if (sys_access (template, 0) < 0)
3068 while (++i
< sizeof (first_char
));
3071 /* Template is badly formed or else we can't generate a unique name,
3072 so return empty string */
3078 sys_open (const char * path
, int oflag
, int mode
)
3080 const char* mpath
= map_w32_filename (path
, NULL
);
3081 /* Try to open file without _O_CREAT, to be able to write to hidden
3082 and system files. Force all file handles to be
3084 int res
= _open (mpath
, (oflag
& ~_O_CREAT
) | _O_NOINHERIT
, mode
);
3087 return _open (mpath
, oflag
| _O_NOINHERIT
, mode
);
3091 sys_rename (const char * oldname
, const char * newname
)
3094 char temp
[MAX_PATH
];
3098 /* MoveFile on Windows 95 doesn't correctly change the short file name
3099 alias in a number of circumstances (it is not easy to predict when
3100 just by looking at oldname and newname, unfortunately). In these
3101 cases, renaming through a temporary name avoids the problem.
3103 A second problem on Windows 95 is that renaming through a temp name when
3104 newname is uppercase fails (the final long name ends up in
3105 lowercase, although the short alias might be uppercase) UNLESS the
3106 long temp name is not 8.3.
3108 So, on Windows 95 we always rename through a temp name, and we make sure
3109 the temp name has a long extension to ensure correct renaming. */
3111 strcpy (temp
, map_w32_filename (oldname
, NULL
));
3113 /* volume_info is set indirectly by map_w32_filename. */
3114 oldname_dev
= volume_info
.serialnum
;
3116 if (os_subtype
== OS_9X
)
3122 oldname
= map_w32_filename (oldname
, NULL
);
3123 if ((o
= strrchr (oldname
, '\\')))
3126 o
= (char *) oldname
;
3128 if ((p
= strrchr (temp
, '\\')))
3135 /* Force temp name to require a manufactured 8.3 alias - this
3136 seems to make the second rename work properly. */
3137 sprintf (p
, "_.%s.%u", o
, i
);
3139 result
= rename (oldname
, temp
);
3141 /* This loop must surely terminate! */
3142 while (result
< 0 && errno
== EEXIST
);
3147 /* Emulate Unix behavior - newname is deleted if it already exists
3148 (at least if it is a file; don't do this for directories).
3150 Since we mustn't do this if we are just changing the case of the
3151 file name (we would end up deleting the file we are trying to
3152 rename!), we let rename detect if the destination file already
3153 exists - that way we avoid the possible pitfalls of trying to
3154 determine ourselves whether two names really refer to the same
3155 file, which is not always possible in the general case. (Consider
3156 all the permutations of shared or subst'd drives, etc.) */
3158 newname
= map_w32_filename (newname
, NULL
);
3160 /* volume_info is set indirectly by map_w32_filename. */
3161 newname_dev
= volume_info
.serialnum
;
3163 result
= rename (temp
, newname
);
3167 DWORD w32err
= GetLastError ();
3170 && newname_dev
!= oldname_dev
)
3172 /* The implementation of `rename' on Windows does not return
3173 errno = EXDEV when you are moving a directory to a
3174 different storage device (ex. logical disk). It returns
3175 EACCES instead. So here we handle such situations and
3179 if ((attributes
= GetFileAttributes (temp
)) != -1
3180 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
))
3183 else if (errno
== EEXIST
)
3185 if (_chmod (newname
, 0666) != 0)
3187 if (_unlink (newname
) != 0)
3189 result
= rename (temp
, newname
);
3191 else if (w32err
== ERROR_PRIVILEGE_NOT_HELD
3192 && is_symlink (temp
))
3194 /* This is Windows prohibiting the user from creating a
3195 symlink in another place, since that requires
3205 sys_rmdir (const char * path
)
3207 return _rmdir (map_w32_filename (path
, NULL
));
3211 sys_unlink (const char * path
)
3213 path
= map_w32_filename (path
, NULL
);
3215 /* On Unix, unlink works without write permission. */
3216 _chmod (path
, 0666);
3217 return _unlink (path
);
3220 static FILETIME utc_base_ft
;
3221 static ULONGLONG utc_base
; /* In 100ns units */
3222 static int init
= 0;
3224 #define FILETIME_TO_U64(result, ft) \
3226 ULARGE_INTEGER uiTemp; \
3227 uiTemp.LowPart = (ft).dwLowDateTime; \
3228 uiTemp.HighPart = (ft).dwHighDateTime; \
3229 result = uiTemp.QuadPart; \
3233 initialize_utc_base (void)
3235 /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */
3244 st
.wMilliseconds
= 0;
3246 SystemTimeToFileTime (&st
, &utc_base_ft
);
3247 FILETIME_TO_U64 (utc_base
, utc_base_ft
);
3251 convert_time (FILETIME ft
)
3257 initialize_utc_base ();
3261 if (CompareFileTime (&ft
, &utc_base_ft
) < 0)
3264 FILETIME_TO_U64 (tmp
, ft
);
3265 return (time_t) ((tmp
- utc_base
) / 10000000L);
3269 convert_from_time_t (time_t time
, FILETIME
* pft
)
3275 initialize_utc_base ();
3279 /* time in 100ns units since 1-Jan-1601 */
3280 tmp
.QuadPart
= (ULONGLONG
) time
* 10000000L + utc_base
;
3281 pft
->dwHighDateTime
= tmp
.HighPart
;
3282 pft
->dwLowDateTime
= tmp
.LowPart
;
3286 /* No reason to keep this; faking inode values either by hashing or even
3287 using the file index from GetInformationByHandle, is not perfect and
3288 so by default Emacs doesn't use the inode values on Windows.
3289 Instead, we now determine file-truename correctly (except for
3290 possible drive aliasing etc). */
3292 /* Modified version of "PJW" algorithm (see the "Dragon" compiler book). */
3294 hashval (const unsigned char * str
)
3299 h
= (h
<< 4) + *str
++;
3305 /* Return the hash value of the canonical pathname, excluding the
3306 drive/UNC header, to get a hopefully unique inode number. */
3308 generate_inode_val (const char * name
)
3310 char fullname
[ MAX_PATH
];
3314 /* Get the truly canonical filename, if it exists. (Note: this
3315 doesn't resolve aliasing due to subst commands, or recognize hard
3317 if (!w32_get_long_filename ((char *)name
, fullname
, MAX_PATH
))
3320 parse_root (fullname
, &p
);
3321 /* Normal W32 filesystems are still case insensitive. */
3328 static PSECURITY_DESCRIPTOR
3329 get_file_security_desc_by_handle (HANDLE h
)
3331 PSECURITY_DESCRIPTOR psd
= NULL
;
3333 SECURITY_INFORMATION si
= OWNER_SECURITY_INFORMATION
3334 | GROUP_SECURITY_INFORMATION
/* | DACL_SECURITY_INFORMATION */ ;
3336 err
= get_security_info (h
, SE_FILE_OBJECT
, si
,
3337 NULL
, NULL
, NULL
, NULL
, &psd
);
3338 if (err
!= ERROR_SUCCESS
)
3344 static PSECURITY_DESCRIPTOR
3345 get_file_security_desc_by_name (const char *fname
)
3347 PSECURITY_DESCRIPTOR psd
= NULL
;
3349 SECURITY_INFORMATION si
= OWNER_SECURITY_INFORMATION
3350 | GROUP_SECURITY_INFORMATION
/* | DACL_SECURITY_INFORMATION */ ;
3352 if (!get_file_security (fname
, si
, psd
, 0, &sd_len
))
3354 err
= GetLastError ();
3355 if (err
!= ERROR_INSUFFICIENT_BUFFER
)
3359 psd
= xmalloc (sd_len
);
3360 if (!get_file_security (fname
, si
, psd
, sd_len
, &sd_len
))
3372 unsigned n_subauthorities
;
3374 /* Use the last sub-authority value of the RID, the relative
3375 portion of the SID, as user/group ID. */
3376 n_subauthorities
= *get_sid_sub_authority_count (sid
);
3377 if (n_subauthorities
< 1)
3378 return 0; /* the "World" RID */
3379 return *get_sid_sub_authority (sid
, n_subauthorities
- 1);
3382 /* Caching SID and account values for faster lokup. */
3385 # define FLEXIBLE_ARRAY_MEMBER
3387 # define FLEXIBLE_ARRAY_MEMBER 1
3392 struct w32_id
*next
;
3394 unsigned char sid
[FLEXIBLE_ARRAY_MEMBER
];
3397 static struct w32_id
*w32_idlist
;
3400 w32_cached_id (PSID sid
, unsigned *id
, char *name
)
3402 struct w32_id
*tail
, *found
;
3404 for (found
= NULL
, tail
= w32_idlist
; tail
; tail
= tail
->next
)
3406 if (equal_sid ((PSID
)tail
->sid
, sid
))
3415 strcpy (name
, found
->name
);
3423 w32_add_to_cache (PSID sid
, unsigned id
, char *name
)
3426 struct w32_id
*new_entry
;
3428 /* We don't want to leave behind stale cache from when Emacs was
3432 sid_len
= get_length_sid (sid
);
3433 new_entry
= xmalloc (offsetof (struct w32_id
, sid
) + sid_len
);
3436 new_entry
->rid
= id
;
3437 strcpy (new_entry
->name
, name
);
3438 copy_sid (sid_len
, (PSID
)new_entry
->sid
, sid
);
3439 new_entry
->next
= w32_idlist
;
3440 w32_idlist
= new_entry
;
3449 get_name_and_id (PSECURITY_DESCRIPTOR psd
, unsigned *id
, char *nm
, int what
)
3452 char machine
[MAX_COMPUTERNAME_LENGTH
+1];
3454 SID_NAME_USE ignore
;
3456 DWORD name_len
= sizeof (name
);
3458 DWORD domain_len
= sizeof (domain
);
3463 result
= get_security_descriptor_owner (psd
, &sid
, &dflt
);
3464 else if (what
== GID
)
3465 result
= get_security_descriptor_group (psd
, &sid
, &dflt
);
3469 if (!result
|| !is_valid_sid (sid
))
3471 else if (!w32_cached_id (sid
, id
, nm
))
3473 if (!lookup_account_sid (NULL
, sid
, name
, &name_len
,
3474 domain
, &domain_len
, &ignore
)
3475 || name_len
> UNLEN
+1)
3479 *id
= get_rid (sid
);
3481 w32_add_to_cache (sid
, *id
, name
);
3488 get_file_owner_and_group (PSECURITY_DESCRIPTOR psd
, struct stat
*st
)
3490 int dflt_usr
= 0, dflt_grp
= 0;
3499 if (get_name_and_id (psd
, &st
->st_uid
, st
->st_uname
, UID
))
3501 if (get_name_and_id (psd
, &st
->st_gid
, st
->st_gname
, GID
))
3504 /* Consider files to belong to current user/group, if we cannot get
3505 more accurate information. */
3508 st
->st_uid
= dflt_passwd
.pw_uid
;
3509 strcpy (st
->st_uname
, dflt_passwd
.pw_name
);
3513 st
->st_gid
= dflt_passwd
.pw_gid
;
3514 strcpy (st
->st_gname
, dflt_group
.gr_name
);
3518 /* Return non-zero if NAME is a potentially slow filesystem. */
3520 is_slow_fs (const char *name
)
3525 if (IS_DIRECTORY_SEP (name
[0]) && IS_DIRECTORY_SEP (name
[1]))
3526 devtype
= DRIVE_REMOTE
; /* assume UNC name is remote */
3527 else if (!(strlen (name
) >= 2 && IS_DEVICE_SEP (name
[1])))
3528 devtype
= GetDriveType (NULL
); /* use root of current drive */
3531 /* GetDriveType needs the root directory of the drive. */
3532 strncpy (drive_root
, name
, 2);
3533 drive_root
[2] = '\\';
3534 drive_root
[3] = '\0';
3535 devtype
= GetDriveType (drive_root
);
3537 return !(devtype
== DRIVE_FIXED
|| devtype
== DRIVE_RAMDISK
);
3540 /* MSVC stat function can't cope with UNC names and has other bugs, so
3541 replace it with our own. This also allows us to calculate consistent
3542 inode values and owner/group without hacks in the main Emacs code. */
3545 stat_worker (const char * path
, struct stat
* buf
, int follow_symlinks
)
3547 char *name
, *save_name
, *r
;
3548 WIN32_FIND_DATA wfd
;
3550 unsigned __int64 fake_inode
= 0;
3553 int rootdir
= FALSE
;
3554 PSECURITY_DESCRIPTOR psd
= NULL
;
3555 int is_a_symlink
= 0;
3556 DWORD file_flags
= FILE_FLAG_BACKUP_SEMANTICS
;
3557 DWORD access_rights
= 0;
3558 DWORD fattrs
= 0, serialnum
= 0, fs_high
= 0, fs_low
= 0, nlinks
= 1;
3559 FILETIME ctime
, atime
, wtime
;
3561 if (path
== NULL
|| buf
== NULL
)
3567 save_name
= name
= (char *) map_w32_filename (path
, &path
);
3568 /* Must be valid filename, no wild cards or other invalid
3569 characters. We use _mbspbrk to support multibyte strings that
3570 might look to strpbrk as if they included literal *, ?, and other
3571 characters mentioned below that are disallowed by Windows
3573 if (_mbspbrk (name
, "*?|<>\""))
3579 /* Remove trailing directory separator, unless name is the root
3580 directory of a drive or UNC volume in which case ensure there
3581 is a trailing separator. */
3582 len
= strlen (name
);
3583 name
= strcpy (alloca (len
+ 2), name
);
3585 /* Avoid a somewhat costly call to is_symlink if the filesystem
3586 doesn't support symlinks. */
3587 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) != 0)
3588 is_a_symlink
= is_symlink (name
);
3590 /* Plan A: Open the file and get all the necessary information via
3591 the resulting handle. This solves several issues in one blow:
3593 . retrieves attributes for the target of a symlink, if needed
3594 . gets attributes of root directories and symlinks pointing to
3595 root directories, thus avoiding the need for special-casing
3596 these and detecting them by examining the file-name format
3597 . retrieves more accurate attributes (e.g., non-zero size for
3598 some directories, esp. directories that are junction points)
3599 . correctly resolves "c:/..", "/.." and similar file names
3600 . avoids run-time penalties for 99% of use cases
3602 Plan A is always tried first, unless the user asked not to (but
3603 if the file is a symlink and we need to follow links, we try Plan
3604 A even if the user asked not to).
3606 If Plan A fails, we go to Plan B (below), where various
3607 potentially expensive techniques must be used to handle "special"
3608 files such as UNC volumes etc. */
3609 if (!(NILP (Vw32_get_true_file_attributes
)
3610 || (EQ (Vw32_get_true_file_attributes
, Qlocal
) && is_slow_fs (name
)))
3611 /* Following symlinks requires getting the info by handle. */
3612 || (is_a_symlink
&& follow_symlinks
))
3614 BY_HANDLE_FILE_INFORMATION info
;
3616 if (is_a_symlink
&& !follow_symlinks
)
3617 file_flags
|= FILE_FLAG_OPEN_REPARSE_POINT
;
3618 /* READ_CONTROL access rights are required to get security info
3619 by handle. But if the OS doesn't support security in the
3620 first place, we don't need to try. */
3621 if (is_windows_9x () != TRUE
)
3622 access_rights
|= READ_CONTROL
;
3624 fh
= CreateFile (name
, access_rights
, 0, NULL
, OPEN_EXISTING
,
3626 /* If CreateFile fails with READ_CONTROL, try again with zero as
3628 if (fh
== INVALID_HANDLE_VALUE
&& access_rights
)
3629 fh
= CreateFile (name
, 0, 0, NULL
, OPEN_EXISTING
,
3631 if (fh
== INVALID_HANDLE_VALUE
)
3632 goto no_true_file_attributes
;
3634 /* This is more accurate in terms of getting the correct number
3635 of links, but is quite slow (it is noticeable when Emacs is
3636 making a list of file name completions). */
3637 if (GetFileInformationByHandle (fh
, &info
))
3639 nlinks
= info
.nNumberOfLinks
;
3640 /* Might as well use file index to fake inode values, but this
3641 is not guaranteed to be unique unless we keep a handle open
3642 all the time (even then there are situations where it is
3643 not unique). Reputedly, there are at most 48 bits of info
3644 (on NTFS, presumably less on FAT). */
3645 fake_inode
= info
.nFileIndexHigh
;
3647 fake_inode
+= info
.nFileIndexLow
;
3648 serialnum
= info
.dwVolumeSerialNumber
;
3649 fs_high
= info
.nFileSizeHigh
;
3650 fs_low
= info
.nFileSizeLow
;
3651 ctime
= info
.ftCreationTime
;
3652 atime
= info
.ftLastAccessTime
;
3653 wtime
= info
.ftLastWriteTime
;
3654 fattrs
= info
.dwFileAttributes
;
3658 /* We don't go to Plan B here, because it's not clear that
3659 it's a good idea. The only known use case where
3660 CreateFile succeeds, but GetFileInformationByHandle fails
3661 (with ERROR_INVALID_FUNCTION) is for character devices
3662 such as NUL, PRN, etc. For these, switching to Plan B is
3663 a net loss, because we lose the character device
3664 attribute returned by GetFileType below (FindFirstFile
3665 doesn't set that bit in the attributes), and the other
3666 fields don't make sense for character devices anyway.
3667 Emacs doesn't really care for non-file entities in the
3668 context of l?stat, so neither do we. */
3670 /* w32err is assigned so one could put a breakpoint here and
3671 examine its value, when GetFileInformationByHandle
3673 DWORD w32err
= GetLastError ();
3677 case ERROR_FILE_NOT_FOUND
: /* can this ever happen? */
3683 /* Test for a symlink before testing for a directory, since
3684 symlinks to directories have the directory bit set, but we
3685 don't want them to appear as directories. */
3686 if (is_a_symlink
&& !follow_symlinks
)
3687 buf
->st_mode
= S_IFLNK
;
3688 else if (fattrs
& FILE_ATTRIBUTE_DIRECTORY
)
3689 buf
->st_mode
= S_IFDIR
;
3692 DWORD ftype
= GetFileType (fh
);
3696 case FILE_TYPE_DISK
:
3697 buf
->st_mode
= S_IFREG
;
3699 case FILE_TYPE_PIPE
:
3700 buf
->st_mode
= S_IFIFO
;
3702 case FILE_TYPE_CHAR
:
3703 case FILE_TYPE_UNKNOWN
:
3705 buf
->st_mode
= S_IFCHR
;
3708 /* We produce the fallback owner and group data, based on the
3709 current user that runs Emacs, in the following cases:
3711 . this is Windows 9X
3712 . getting security by handle failed, and we need to produce
3713 information for the target of a symlink (this is better
3714 than producing a potentially misleading info about the
3717 If getting security by handle fails, and we don't need to
3718 resolve symlinks, we try getting security by name. */
3719 if (is_windows_9x () != TRUE
)
3720 psd
= get_file_security_desc_by_handle (fh
);
3723 get_file_owner_and_group (psd
, buf
);
3726 else if (is_windows_9x () == TRUE
)
3727 get_file_owner_and_group (NULL
, buf
);
3728 else if (!(is_a_symlink
&& follow_symlinks
))
3730 psd
= get_file_security_desc_by_name (name
);
3731 get_file_owner_and_group (psd
, buf
);
3735 get_file_owner_and_group (NULL
, buf
);
3740 no_true_file_attributes
:
3741 /* Plan B: Either getting a handle on the file failed, or the
3742 caller explicitly asked us to not bother making this
3743 information more accurate.
3745 Implementation note: In Plan B, we never bother to resolve
3746 symlinks, even if we got here because we tried Plan A and
3747 failed. That's because, even if the caller asked for extra
3748 precision by setting Vw32_get_true_file_attributes to t,
3749 resolving symlinks requires acquiring a file handle to the
3750 symlink, which we already know will fail. And if the user
3751 did not ask for extra precision, resolving symlinks will fly
3752 in the face of that request, since the user then wants the
3753 lightweight version of the code. */
3754 rootdir
= (path
>= save_name
+ len
- 1
3755 && (IS_DIRECTORY_SEP (*path
) || *path
== 0));
3757 /* If name is "c:/.." or "/.." then stat "c:/" or "/". */
3758 r
= IS_DEVICE_SEP (name
[1]) ? &name
[2] : name
;
3759 if (IS_DIRECTORY_SEP (r
[0])
3760 && r
[1] == '.' && r
[2] == '.' && r
[3] == '\0')
3763 /* Note: If NAME is a symlink to the root of a UNC volume
3764 (i.e. "\\SERVER"), we will not detect that here, and we will
3765 return data about the symlink as result of FindFirst below.
3766 This is unfortunate, but that marginal use case does not
3767 justify a call to chase_symlinks which would impose a penalty
3768 on all the other use cases. (We get here for symlinks to
3769 roots of UNC volumes because CreateFile above fails for them,
3770 unlike with symlinks to root directories X:\ of drives.) */
3771 if (is_unc_volume (name
))
3773 fattrs
= unc_volume_file_attributes (name
);
3777 ctime
= atime
= wtime
= utc_base_ft
;
3781 if (!IS_DIRECTORY_SEP (name
[len
-1]))
3782 strcat (name
, "\\");
3783 if (GetDriveType (name
) < 2)
3789 fattrs
= FILE_ATTRIBUTE_DIRECTORY
;
3790 ctime
= atime
= wtime
= utc_base_ft
;
3794 if (IS_DIRECTORY_SEP (name
[len
-1]))
3797 /* (This is hacky, but helps when doing file completions on
3798 network drives.) Optimize by using information available from
3799 active readdir if possible. */
3800 len
= strlen (dir_pathname
);
3801 if (IS_DIRECTORY_SEP (dir_pathname
[len
-1]))
3803 if (dir_find_handle
!= INVALID_HANDLE_VALUE
3804 && !(is_a_symlink
&& follow_symlinks
)
3805 && strnicmp (save_name
, dir_pathname
, len
) == 0
3806 && IS_DIRECTORY_SEP (name
[len
])
3807 && xstrcasecmp (name
+ len
+ 1, dir_static
.d_name
) == 0)
3809 /* This was the last entry returned by readdir. */
3810 wfd
= dir_find_data
;
3814 logon_network_drive (name
);
3816 fh
= FindFirstFile (name
, &wfd
);
3817 if (fh
== INVALID_HANDLE_VALUE
)
3824 /* Note: if NAME is a symlink, the information we get from
3825 FindFirstFile is for the symlink, not its target. */
3826 fattrs
= wfd
.dwFileAttributes
;
3827 ctime
= wfd
.ftCreationTime
;
3828 atime
= wfd
.ftLastAccessTime
;
3829 wtime
= wfd
.ftLastWriteTime
;
3830 fs_high
= wfd
.nFileSizeHigh
;
3831 fs_low
= wfd
.nFileSizeLow
;
3834 serialnum
= volume_info
.serialnum
;
3836 if (is_a_symlink
&& !follow_symlinks
)
3837 buf
->st_mode
= S_IFLNK
;
3838 else if (fattrs
& FILE_ATTRIBUTE_DIRECTORY
)
3839 buf
->st_mode
= S_IFDIR
;
3841 buf
->st_mode
= S_IFREG
;
3843 get_file_owner_and_group (NULL
, buf
);
3847 /* Not sure if there is any point in this. */
3848 if (!NILP (Vw32_generate_fake_inodes
))
3849 fake_inode
= generate_inode_val (name
);
3850 else if (fake_inode
== 0)
3852 /* For want of something better, try to make everything unique. */
3853 static DWORD gen_num
= 0;
3854 fake_inode
= ++gen_num
;
3858 buf
->st_ino
= fake_inode
;
3860 buf
->st_dev
= serialnum
;
3861 buf
->st_rdev
= serialnum
;
3863 buf
->st_size
= fs_high
;
3864 buf
->st_size
<<= 32;
3865 buf
->st_size
+= fs_low
;
3866 buf
->st_nlink
= nlinks
;
3868 /* Convert timestamps to Unix format. */
3869 buf
->st_mtime
= convert_time (wtime
);
3870 buf
->st_atime
= convert_time (atime
);
3871 if (buf
->st_atime
== 0) buf
->st_atime
= buf
->st_mtime
;
3872 buf
->st_ctime
= convert_time (ctime
);
3873 if (buf
->st_ctime
== 0) buf
->st_ctime
= buf
->st_mtime
;
3875 /* determine rwx permissions */
3876 if (is_a_symlink
&& !follow_symlinks
)
3877 permission
= S_IREAD
| S_IWRITE
| S_IEXEC
; /* Posix expectations */
3880 if (fattrs
& FILE_ATTRIBUTE_READONLY
)
3881 permission
= S_IREAD
;
3883 permission
= S_IREAD
| S_IWRITE
;
3885 if (fattrs
& FILE_ATTRIBUTE_DIRECTORY
)
3886 permission
|= S_IEXEC
;
3887 else if (is_exec (name
))
3888 permission
|= S_IEXEC
;
3891 buf
->st_mode
|= permission
| (permission
>> 3) | (permission
>> 6);
3897 stat (const char * path
, struct stat
* buf
)
3899 return stat_worker (path
, buf
, 1);
3903 lstat (const char * path
, struct stat
* buf
)
3905 return stat_worker (path
, buf
, 0);
3908 /* Provide fstat and utime as well as stat for consistent handling of
3911 fstat (int desc
, struct stat
* buf
)
3913 HANDLE fh
= (HANDLE
) _get_osfhandle (desc
);
3914 BY_HANDLE_FILE_INFORMATION info
;
3915 unsigned __int64 fake_inode
;
3918 switch (GetFileType (fh
) & ~FILE_TYPE_REMOTE
)
3920 case FILE_TYPE_DISK
:
3921 buf
->st_mode
= S_IFREG
;
3922 if (!GetFileInformationByHandle (fh
, &info
))
3928 case FILE_TYPE_PIPE
:
3929 buf
->st_mode
= S_IFIFO
;
3931 case FILE_TYPE_CHAR
:
3932 case FILE_TYPE_UNKNOWN
:
3934 buf
->st_mode
= S_IFCHR
;
3936 memset (&info
, 0, sizeof (info
));
3937 info
.dwFileAttributes
= 0;
3938 info
.ftCreationTime
= utc_base_ft
;
3939 info
.ftLastAccessTime
= utc_base_ft
;
3940 info
.ftLastWriteTime
= utc_base_ft
;
3943 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_DIRECTORY
)
3944 buf
->st_mode
= S_IFDIR
;
3946 buf
->st_nlink
= info
.nNumberOfLinks
;
3947 /* Might as well use file index to fake inode values, but this
3948 is not guaranteed to be unique unless we keep a handle open
3949 all the time (even then there are situations where it is
3950 not unique). Reputedly, there are at most 48 bits of info
3951 (on NTFS, presumably less on FAT). */
3952 fake_inode
= info
.nFileIndexHigh
;
3954 fake_inode
+= info
.nFileIndexLow
;
3956 /* MSVC defines _ino_t to be short; other libc's might not. */
3957 if (sizeof (buf
->st_ino
) == 2)
3958 buf
->st_ino
= fake_inode
^ (fake_inode
>> 16);
3960 buf
->st_ino
= fake_inode
;
3962 /* Consider files to belong to current user.
3963 FIXME: this should use GetSecurityInfo API, but it is only
3964 available for _WIN32_WINNT >= 0x501. */
3965 buf
->st_uid
= dflt_passwd
.pw_uid
;
3966 buf
->st_gid
= dflt_passwd
.pw_gid
;
3967 strcpy (buf
->st_uname
, dflt_passwd
.pw_name
);
3968 strcpy (buf
->st_gname
, dflt_group
.gr_name
);
3970 buf
->st_dev
= info
.dwVolumeSerialNumber
;
3971 buf
->st_rdev
= info
.dwVolumeSerialNumber
;
3973 buf
->st_size
= info
.nFileSizeHigh
;
3974 buf
->st_size
<<= 32;
3975 buf
->st_size
+= info
.nFileSizeLow
;
3977 /* Convert timestamps to Unix format. */
3978 buf
->st_mtime
= convert_time (info
.ftLastWriteTime
);
3979 buf
->st_atime
= convert_time (info
.ftLastAccessTime
);
3980 if (buf
->st_atime
== 0) buf
->st_atime
= buf
->st_mtime
;
3981 buf
->st_ctime
= convert_time (info
.ftCreationTime
);
3982 if (buf
->st_ctime
== 0) buf
->st_ctime
= buf
->st_mtime
;
3984 /* determine rwx permissions */
3985 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_READONLY
)
3986 permission
= S_IREAD
;
3988 permission
= S_IREAD
| S_IWRITE
;
3990 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_DIRECTORY
)
3991 permission
|= S_IEXEC
;
3994 #if 0 /* no way of knowing the filename */
3995 char * p
= strrchr (name
, '.');
3997 (xstrcasecmp (p
, ".exe") == 0 ||
3998 xstrcasecmp (p
, ".com") == 0 ||
3999 xstrcasecmp (p
, ".bat") == 0 ||
4000 xstrcasecmp (p
, ".cmd") == 0))
4001 permission
|= S_IEXEC
;
4005 buf
->st_mode
|= permission
| (permission
>> 3) | (permission
>> 6);
4011 utime (const char *name
, struct utimbuf
*times
)
4013 struct utimbuf deftime
;
4020 deftime
.modtime
= deftime
.actime
= time (NULL
);
4024 /* Need write access to set times. */
4025 fh
= CreateFile (name
, FILE_WRITE_ATTRIBUTES
,
4026 /* If NAME specifies a directory, FILE_SHARE_DELETE
4027 allows other processes to delete files inside it,
4028 while we have the directory open. */
4029 FILE_SHARE_READ
| FILE_SHARE_WRITE
| FILE_SHARE_DELETE
,
4030 0, OPEN_EXISTING
, FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
4031 if (fh
!= INVALID_HANDLE_VALUE
)
4033 convert_from_time_t (times
->actime
, &atime
);
4034 convert_from_time_t (times
->modtime
, &mtime
);
4035 if (!SetFileTime (fh
, NULL
, &atime
, &mtime
))
4052 /* Symlink-related functions. */
4053 #ifndef SYMBOLIC_LINK_FLAG_DIRECTORY
4054 #define SYMBOLIC_LINK_FLAG_DIRECTORY 0x1
4058 symlink (char const *filename
, char const *linkname
)
4060 char linkfn
[MAX_PATH
], *tgtfn
;
4062 int dir_access
, filename_ends_in_slash
;
4064 /* Diagnostics follows Posix as much as possible. */
4065 if (filename
== NULL
|| linkname
== NULL
)
4075 if (strlen (filename
) > MAX_PATH
|| strlen (linkname
) > MAX_PATH
)
4077 errno
= ENAMETOOLONG
;
4081 strcpy (linkfn
, map_w32_filename (linkname
, NULL
));
4082 if ((volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) == 0)
4088 /* Note: since empty FILENAME was already rejected, we can safely
4089 refer to FILENAME[1]. */
4090 if (!(IS_DIRECTORY_SEP (filename
[0]) || IS_DEVICE_SEP (filename
[1])))
4092 /* Non-absolute FILENAME is understood as being relative to
4093 LINKNAME's directory. We need to prepend that directory to
4094 FILENAME to get correct results from sys_access below, since
4095 otherwise it will interpret FILENAME relative to the
4096 directory where the Emacs process runs. Note that
4097 make-symbolic-link always makes sure LINKNAME is a fully
4098 expanded file name. */
4100 char *p
= linkfn
+ strlen (linkfn
);
4102 while (p
> linkfn
&& !IS_ANY_SEP (p
[-1]))
4105 strncpy (tem
, linkfn
, p
- linkfn
);
4106 tem
[p
- linkfn
] = '\0';
4107 strcat (tem
, filename
);
4108 dir_access
= sys_access (tem
, D_OK
);
4111 dir_access
= sys_access (filename
, D_OK
);
4113 /* Since Windows distinguishes between symlinks to directories and
4114 to files, we provide a kludgy feature: if FILENAME doesn't
4115 exist, but ends in a slash, we create a symlink to directory. If
4116 FILENAME exists and is a directory, we always create a symlink to
4118 filename_ends_in_slash
= IS_DIRECTORY_SEP (filename
[strlen (filename
) - 1]);
4119 if (dir_access
== 0 || filename_ends_in_slash
)
4120 flags
= SYMBOLIC_LINK_FLAG_DIRECTORY
;
4122 tgtfn
= (char *)map_w32_filename (filename
, NULL
);
4123 if (filename_ends_in_slash
)
4124 tgtfn
[strlen (tgtfn
) - 1] = '\0';
4127 if (!create_symbolic_link (linkfn
, tgtfn
, flags
))
4129 /* ENOSYS is set by create_symbolic_link, when it detects that
4130 the OS doesn't support the CreateSymbolicLink API. */
4131 if (errno
!= ENOSYS
)
4133 DWORD w32err
= GetLastError ();
4137 /* ERROR_SUCCESS is sometimes returned when LINKFN and
4138 TGTFN point to the same file name, go figure. */
4140 case ERROR_FILE_EXISTS
:
4143 case ERROR_ACCESS_DENIED
:
4146 case ERROR_FILE_NOT_FOUND
:
4147 case ERROR_PATH_NOT_FOUND
:
4148 case ERROR_BAD_NETPATH
:
4149 case ERROR_INVALID_REPARSE_DATA
:
4152 case ERROR_DIRECTORY
:
4155 case ERROR_PRIVILEGE_NOT_HELD
:
4156 case ERROR_NOT_ALL_ASSIGNED
:
4159 case ERROR_DISK_FULL
:
4172 /* A quick inexpensive test of whether FILENAME identifies a file that
4173 is a symlink. Returns non-zero if it is, zero otherwise. FILENAME
4174 must already be in the normalized form returned by
4177 Note: for repeated operations on many files, it is best to test
4178 whether the underlying volume actually supports symlinks, by
4179 testing the FILE_SUPPORTS_REPARSE_POINTS bit in volume's flags, and
4180 avoid the call to this function if it doesn't. That's because the
4181 call to GetFileAttributes takes a non-negligible time, especially
4182 on non-local or removable filesystems. See stat_worker for an
4183 example of how to do that. */
4185 is_symlink (const char *filename
)
4188 WIN32_FIND_DATA wfd
;
4191 attrs
= GetFileAttributes (filename
);
4194 DWORD w32err
= GetLastError ();
4198 case ERROR_BAD_NETPATH
: /* network share, can't be a symlink */
4200 case ERROR_ACCESS_DENIED
:
4203 case ERROR_FILE_NOT_FOUND
:
4204 case ERROR_PATH_NOT_FOUND
:
4211 if ((attrs
& FILE_ATTRIBUTE_REPARSE_POINT
) == 0)
4213 logon_network_drive (filename
);
4214 fh
= FindFirstFile (filename
, &wfd
);
4215 if (fh
== INVALID_HANDLE_VALUE
)
4218 return (wfd
.dwFileAttributes
& FILE_ATTRIBUTE_REPARSE_POINT
) != 0
4219 && (wfd
.dwReserved0
& IO_REPARSE_TAG_SYMLINK
) == IO_REPARSE_TAG_SYMLINK
;
4222 /* If NAME identifies a symbolic link, copy into BUF the file name of
4223 the symlink's target. Copy at most BUF_SIZE bytes, and do NOT
4224 null-terminate the target name, even if it fits. Return the number
4225 of bytes copied, or -1 if NAME is not a symlink or any error was
4226 encountered while resolving it. The file name copied into BUF is
4227 encoded in the current ANSI codepage. */
4229 readlink (const char *name
, char *buf
, size_t buf_size
)
4232 TOKEN_PRIVILEGES privs
;
4233 int restore_privs
= 0;
4248 path
= map_w32_filename (name
, NULL
);
4250 if (strlen (path
) > MAX_PATH
)
4252 errno
= ENAMETOOLONG
;
4257 if (is_windows_9x () == TRUE
4258 || (volume_info
.flags
& FILE_SUPPORTS_REPARSE_POINTS
) == 0
4259 || !is_symlink (path
))
4262 errno
= EINVAL
; /* not a symlink */
4266 /* Done with simple tests, now we're in for some _real_ work. */
4267 if (enable_privilege (SE_BACKUP_NAME
, TRUE
, &privs
))
4269 /* Implementation note: From here and onward, don't return early,
4270 since that will fail to restore the original set of privileges of
4271 the calling thread. */
4273 retval
= -1; /* not too optimistic, are we? */
4275 /* Note: In the next call to CreateFile, we use zero as the 2nd
4276 argument because, when the symlink is a hidden/system file,
4277 e.g. 'C:\Users\All Users', GENERIC_READ fails with
4278 ERROR_ACCESS_DENIED. Zero seems to work just fine, both for file
4279 and directory symlinks. */
4280 sh
= CreateFile (path
, 0, 0, NULL
, OPEN_EXISTING
,
4281 FILE_FLAG_OPEN_REPARSE_POINT
| FILE_FLAG_BACKUP_SEMANTICS
,
4283 if (sh
!= INVALID_HANDLE_VALUE
)
4285 BYTE reparse_buf
[MAXIMUM_REPARSE_DATA_BUFFER_SIZE
];
4286 REPARSE_DATA_BUFFER
*reparse_data
= (REPARSE_DATA_BUFFER
*)&reparse_buf
[0];
4289 if (!DeviceIoControl (sh
, FSCTL_GET_REPARSE_POINT
, NULL
, 0,
4290 reparse_buf
, MAXIMUM_REPARSE_DATA_BUFFER_SIZE
,
4293 else if (reparse_data
->ReparseTag
!= IO_REPARSE_TAG_SYMLINK
)
4297 /* Copy the link target name, in wide characters, fro
4298 reparse_data, then convert it to multibyte encoding in
4299 the current locale's codepage. */
4301 BYTE lname
[MAX_PATH
];
4304 reparse_data
->SymbolicLinkReparseBuffer
.PrintNameLength
;
4306 reparse_data
->SymbolicLinkReparseBuffer
.PathBuffer
4307 + reparse_data
->SymbolicLinkReparseBuffer
.PrintNameOffset
/sizeof(WCHAR
);
4309 /* According to MSDN, PrintNameLength does not include the
4310 terminating null character. */
4311 lwname
= alloca ((lwname_len
+ 1) * sizeof(WCHAR
));
4312 memcpy (lwname
, lwname_src
, lwname_len
);
4313 lwname
[lwname_len
/sizeof(WCHAR
)] = 0; /* null-terminate */
4315 /* FIXME: Should we use the current file-name coding system
4316 instead of the fixed value of the ANSI codepage? */
4317 lname_len
= WideCharToMultiByte (w32_ansi_code_page
, 0, lwname
, -1,
4318 lname
, MAX_PATH
, NULL
, NULL
);
4321 /* WideCharToMultiByte failed. */
4322 DWORD w32err1
= GetLastError ();
4326 case ERROR_INSUFFICIENT_BUFFER
:
4327 errno
= ENAMETOOLONG
;
4329 case ERROR_INVALID_PARAMETER
:
4332 case ERROR_NO_UNICODE_TRANSLATION
:
4342 size_t size_to_copy
= buf_size
;
4344 BYTE
*pend
= p
+ lname_len
;
4346 /* Normalize like dostounix_filename does, but we don't
4347 want to assume that lname is null-terminated. */
4348 if (*p
&& p
[1] == ':' && *p
>= 'A' && *p
<= 'Z')
4356 /* Testing for null-terminated LNAME is paranoia:
4357 WideCharToMultiByte should always return a
4358 null-terminated string when its 4th argument is -1
4359 and its 3rd argument is null-terminated (which they
4361 if (lname
[lname_len
- 1] == '\0')
4363 if (lname_len
<= buf_size
)
4364 size_to_copy
= lname_len
;
4365 strncpy (buf
, lname
, size_to_copy
);
4367 retval
= size_to_copy
;
4374 /* CreateFile failed. */
4375 DWORD w32err2
= GetLastError ();
4379 case ERROR_FILE_NOT_FOUND
:
4380 case ERROR_PATH_NOT_FOUND
:
4383 case ERROR_ACCESS_DENIED
:
4384 case ERROR_TOO_MANY_OPEN_FILES
:
4394 restore_privilege (&privs
);
4401 /* If FILE is a symlink, return its target (stored in a static
4402 buffer); otherwise return FILE.
4404 This function repeatedly resolves symlinks in the last component of
4405 a chain of symlink file names, as in foo -> bar -> baz -> ...,
4406 until it arrives at a file whose last component is not a symlink,
4407 or some error occurs. It returns the target of the last
4408 successfully resolved symlink in the chain. If it succeeds to
4409 resolve even a single symlink, the value returned is an absolute
4410 file name with backslashes (result of GetFullPathName). By
4411 contrast, if the original FILE is returned, it is unaltered.
4413 Note: This function can set errno even if it succeeds.
4415 Implementation note: we only resolve the last portion ("basename")
4416 of the argument FILE and of each following file in the chain,
4417 disregarding any possible symlinks in its leading directories.
4418 This is because Windows system calls and library functions
4419 transparently resolve symlinks in leading directories and return
4420 correct information, as long as the basename is not a symlink. */
4422 chase_symlinks (const char *file
)
4424 static char target
[MAX_PATH
];
4425 char link
[MAX_PATH
];
4426 ssize_t res
, link_len
;
4429 if (is_windows_9x () == TRUE
|| !is_symlink (file
))
4430 return (char *)file
;
4432 if ((link_len
= GetFullPathName (file
, MAX_PATH
, link
, NULL
)) == 0)
4433 return (char *)file
;
4438 /* Remove trailing slashes, as we want to resolve the last
4439 non-trivial part of the link name. */
4440 while (link_len
> 3 && IS_DIRECTORY_SEP (link
[link_len
-1]))
4441 link
[link_len
--] = '\0';
4443 res
= readlink (link
, target
, MAX_PATH
);
4447 if (!(IS_DEVICE_SEP (target
[1])
4448 || (IS_DIRECTORY_SEP (target
[0]) && IS_DIRECTORY_SEP (target
[1]))))
4450 /* Target is relative. Append it to the directory part of
4451 the symlink, then copy the result back to target. */
4452 char *p
= link
+ link_len
;
4454 while (p
> link
&& !IS_ANY_SEP (p
[-1]))
4457 strcpy (target
, link
);
4459 /* Resolve any "." and ".." to get a fully-qualified file name
4461 link_len
= GetFullPathName (target
, MAX_PATH
, link
, NULL
);
4463 } while (res
> 0 && link_len
> 0 && ++loop_count
<= 100);
4465 if (loop_count
> 100)
4468 if (target
[0] == '\0') /* not a single call to readlink succeeded */
4469 return (char *)file
;
4473 /* MS-Windows version of careadlinkat (cf. ../lib/careadlinkat.c). We
4474 have a fixed max size for file names, so we don't need the kind of
4475 alloc/malloc/realloc dance the gnulib version does. We also don't
4476 support FD-relative symlinks. */
4478 careadlinkat (int fd
, char const *filename
,
4479 char *buffer
, size_t buffer_size
,
4480 struct allocator
const *alloc
,
4481 ssize_t (*preadlinkat
) (int, char const *, char *, size_t))
4483 char linkname
[MAX_PATH
];
4492 link_size
= preadlinkat (fd
, filename
, linkname
, sizeof(linkname
));
4496 char *retval
= buffer
;
4498 linkname
[link_size
++] = '\0';
4499 if (link_size
> buffer_size
)
4500 retval
= (char *)(alloc
? alloc
->allocate
: xmalloc
) (link_size
);
4502 memcpy (retval
, linkname
, link_size
);
4510 careadlinkatcwd (int fd
, char const *filename
, char *buffer
,
4514 return readlink (filename
, buffer
, buffer_size
);
4518 /* Support for browsing other processes and their attributes. See
4519 process.c for the Lisp bindings. */
4521 /* Helper wrapper functions. */
4523 static HANDLE WINAPI
4524 create_toolhelp32_snapshot (DWORD Flags
, DWORD Ignored
)
4526 static CreateToolhelp32Snapshot_Proc s_pfn_Create_Toolhelp32_Snapshot
= NULL
;
4528 if (g_b_init_create_toolhelp32_snapshot
== 0)
4530 g_b_init_create_toolhelp32_snapshot
= 1;
4531 s_pfn_Create_Toolhelp32_Snapshot
= (CreateToolhelp32Snapshot_Proc
)
4532 GetProcAddress (GetModuleHandle ("kernel32.dll"),
4533 "CreateToolhelp32Snapshot");
4535 if (s_pfn_Create_Toolhelp32_Snapshot
== NULL
)
4537 return INVALID_HANDLE_VALUE
;
4539 return (s_pfn_Create_Toolhelp32_Snapshot (Flags
, Ignored
));
4543 process32_first (HANDLE hSnapshot
, LPPROCESSENTRY32 lppe
)
4545 static Process32First_Proc s_pfn_Process32_First
= NULL
;
4547 if (g_b_init_process32_first
== 0)
4549 g_b_init_process32_first
= 1;
4550 s_pfn_Process32_First
= (Process32First_Proc
)
4551 GetProcAddress (GetModuleHandle ("kernel32.dll"),
4554 if (s_pfn_Process32_First
== NULL
)
4558 return (s_pfn_Process32_First (hSnapshot
, lppe
));
4562 process32_next (HANDLE hSnapshot
, LPPROCESSENTRY32 lppe
)
4564 static Process32Next_Proc s_pfn_Process32_Next
= NULL
;
4566 if (g_b_init_process32_next
== 0)
4568 g_b_init_process32_next
= 1;
4569 s_pfn_Process32_Next
= (Process32Next_Proc
)
4570 GetProcAddress (GetModuleHandle ("kernel32.dll"),
4573 if (s_pfn_Process32_Next
== NULL
)
4577 return (s_pfn_Process32_Next (hSnapshot
, lppe
));
4581 open_thread_token (HANDLE ThreadHandle
,
4582 DWORD DesiredAccess
,
4584 PHANDLE TokenHandle
)
4586 static OpenThreadToken_Proc s_pfn_Open_Thread_Token
= NULL
;
4587 HMODULE hm_advapi32
= NULL
;
4588 if (is_windows_9x () == TRUE
)
4590 SetLastError (ERROR_NOT_SUPPORTED
);
4593 if (g_b_init_open_thread_token
== 0)
4595 g_b_init_open_thread_token
= 1;
4596 hm_advapi32
= LoadLibrary ("Advapi32.dll");
4597 s_pfn_Open_Thread_Token
=
4598 (OpenThreadToken_Proc
) GetProcAddress (hm_advapi32
, "OpenThreadToken");
4600 if (s_pfn_Open_Thread_Token
== NULL
)
4602 SetLastError (ERROR_NOT_SUPPORTED
);
4606 s_pfn_Open_Thread_Token (
4615 impersonate_self (SECURITY_IMPERSONATION_LEVEL ImpersonationLevel
)
4617 static ImpersonateSelf_Proc s_pfn_Impersonate_Self
= NULL
;
4618 HMODULE hm_advapi32
= NULL
;
4619 if (is_windows_9x () == TRUE
)
4623 if (g_b_init_impersonate_self
== 0)
4625 g_b_init_impersonate_self
= 1;
4626 hm_advapi32
= LoadLibrary ("Advapi32.dll");
4627 s_pfn_Impersonate_Self
=
4628 (ImpersonateSelf_Proc
) GetProcAddress (hm_advapi32
, "ImpersonateSelf");
4630 if (s_pfn_Impersonate_Self
== NULL
)
4634 return s_pfn_Impersonate_Self (ImpersonationLevel
);
4638 revert_to_self (void)
4640 static RevertToSelf_Proc s_pfn_Revert_To_Self
= NULL
;
4641 HMODULE hm_advapi32
= NULL
;
4642 if (is_windows_9x () == TRUE
)
4646 if (g_b_init_revert_to_self
== 0)
4648 g_b_init_revert_to_self
= 1;
4649 hm_advapi32
= LoadLibrary ("Advapi32.dll");
4650 s_pfn_Revert_To_Self
=
4651 (RevertToSelf_Proc
) GetProcAddress (hm_advapi32
, "RevertToSelf");
4653 if (s_pfn_Revert_To_Self
== NULL
)
4657 return s_pfn_Revert_To_Self ();
4661 get_process_memory_info (HANDLE h_proc
,
4662 PPROCESS_MEMORY_COUNTERS mem_counters
,
4665 static GetProcessMemoryInfo_Proc s_pfn_Get_Process_Memory_Info
= NULL
;
4666 HMODULE hm_psapi
= NULL
;
4667 if (is_windows_9x () == TRUE
)
4671 if (g_b_init_get_process_memory_info
== 0)
4673 g_b_init_get_process_memory_info
= 1;
4674 hm_psapi
= LoadLibrary ("Psapi.dll");
4676 s_pfn_Get_Process_Memory_Info
= (GetProcessMemoryInfo_Proc
)
4677 GetProcAddress (hm_psapi
, "GetProcessMemoryInfo");
4679 if (s_pfn_Get_Process_Memory_Info
== NULL
)
4683 return s_pfn_Get_Process_Memory_Info (h_proc
, mem_counters
, bufsize
);
4687 get_process_working_set_size (HANDLE h_proc
,
4691 static GetProcessWorkingSetSize_Proc
4692 s_pfn_Get_Process_Working_Set_Size
= NULL
;
4694 if (is_windows_9x () == TRUE
)
4698 if (g_b_init_get_process_working_set_size
== 0)
4700 g_b_init_get_process_working_set_size
= 1;
4701 s_pfn_Get_Process_Working_Set_Size
= (GetProcessWorkingSetSize_Proc
)
4702 GetProcAddress (GetModuleHandle ("kernel32.dll"),
4703 "GetProcessWorkingSetSize");
4705 if (s_pfn_Get_Process_Working_Set_Size
== NULL
)
4709 return s_pfn_Get_Process_Working_Set_Size (h_proc
, minrss
, maxrss
);
4713 global_memory_status (MEMORYSTATUS
*buf
)
4715 static GlobalMemoryStatus_Proc s_pfn_Global_Memory_Status
= NULL
;
4717 if (is_windows_9x () == TRUE
)
4721 if (g_b_init_global_memory_status
== 0)
4723 g_b_init_global_memory_status
= 1;
4724 s_pfn_Global_Memory_Status
= (GlobalMemoryStatus_Proc
)
4725 GetProcAddress (GetModuleHandle ("kernel32.dll"),
4726 "GlobalMemoryStatus");
4728 if (s_pfn_Global_Memory_Status
== NULL
)
4732 return s_pfn_Global_Memory_Status (buf
);
4736 global_memory_status_ex (MEMORY_STATUS_EX
*buf
)
4738 static GlobalMemoryStatusEx_Proc s_pfn_Global_Memory_Status_Ex
= NULL
;
4740 if (is_windows_9x () == TRUE
)
4744 if (g_b_init_global_memory_status_ex
== 0)
4746 g_b_init_global_memory_status_ex
= 1;
4747 s_pfn_Global_Memory_Status_Ex
= (GlobalMemoryStatusEx_Proc
)
4748 GetProcAddress (GetModuleHandle ("kernel32.dll"),
4749 "GlobalMemoryStatusEx");
4751 if (s_pfn_Global_Memory_Status_Ex
== NULL
)
4755 return s_pfn_Global_Memory_Status_Ex (buf
);
4759 list_system_processes (void)
4761 struct gcpro gcpro1
;
4762 Lisp_Object proclist
= Qnil
;
4765 h_snapshot
= create_toolhelp32_snapshot (TH32CS_SNAPPROCESS
, 0);
4767 if (h_snapshot
!= INVALID_HANDLE_VALUE
)
4769 PROCESSENTRY32 proc_entry
;
4775 proc_entry
.dwSize
= sizeof (PROCESSENTRY32
);
4776 for (res
= process32_first (h_snapshot
, &proc_entry
); res
;
4777 res
= process32_next (h_snapshot
, &proc_entry
))
4779 proc_id
= proc_entry
.th32ProcessID
;
4780 proclist
= Fcons (make_fixnum_or_float (proc_id
), proclist
);
4783 CloseHandle (h_snapshot
);
4785 proclist
= Fnreverse (proclist
);
4792 enable_privilege (LPCTSTR priv_name
, BOOL enable_p
, TOKEN_PRIVILEGES
*old_priv
)
4794 TOKEN_PRIVILEGES priv
;
4795 DWORD priv_size
= sizeof (priv
);
4796 DWORD opriv_size
= sizeof (*old_priv
);
4797 HANDLE h_token
= NULL
;
4798 HANDLE h_thread
= GetCurrentThread ();
4802 res
= open_thread_token (h_thread
,
4803 TOKEN_QUERY
| TOKEN_ADJUST_PRIVILEGES
,
4805 if (!res
&& GetLastError () == ERROR_NO_TOKEN
)
4807 if (impersonate_self (SecurityImpersonation
))
4808 res
= open_thread_token (h_thread
,
4809 TOKEN_QUERY
| TOKEN_ADJUST_PRIVILEGES
,
4814 priv
.PrivilegeCount
= 1;
4815 priv
.Privileges
[0].Attributes
= enable_p
? SE_PRIVILEGE_ENABLED
: 0;
4816 LookupPrivilegeValue (NULL
, priv_name
, &priv
.Privileges
[0].Luid
);
4817 if (AdjustTokenPrivileges (h_token
, FALSE
, &priv
, priv_size
,
4818 old_priv
, &opriv_size
)
4819 && GetLastError () != ERROR_NOT_ALL_ASSIGNED
)
4823 CloseHandle (h_token
);
4829 restore_privilege (TOKEN_PRIVILEGES
*priv
)
4831 DWORD priv_size
= sizeof (*priv
);
4832 HANDLE h_token
= NULL
;
4835 if (open_thread_token (GetCurrentThread (),
4836 TOKEN_QUERY
| TOKEN_ADJUST_PRIVILEGES
,
4839 if (AdjustTokenPrivileges (h_token
, FALSE
, priv
, priv_size
, NULL
, NULL
)
4840 && GetLastError () != ERROR_NOT_ALL_ASSIGNED
)
4844 CloseHandle (h_token
);
4850 ltime (ULONGLONG time_100ns
)
4852 ULONGLONG time_sec
= time_100ns
/ 10000000;
4853 int subsec
= time_100ns
% 10000000;
4854 return list4 (make_number (time_sec
>> 16),
4855 make_number (time_sec
& 0xffff),
4856 make_number (subsec
/ 10),
4857 make_number (subsec
% 10 * 100000));
4860 #define U64_TO_LISP_TIME(time) ltime (time)
4863 process_times (HANDLE h_proc
, Lisp_Object
*ctime
, Lisp_Object
*etime
,
4864 Lisp_Object
*stime
, Lisp_Object
*utime
, Lisp_Object
*ttime
,
4867 FILETIME ft_creation
, ft_exit
, ft_kernel
, ft_user
, ft_current
;
4868 ULONGLONG tem1
, tem2
, tem3
, tem
;
4871 || !get_process_times_fn
4872 || !(*get_process_times_fn
) (h_proc
, &ft_creation
, &ft_exit
,
4873 &ft_kernel
, &ft_user
))
4876 GetSystemTimeAsFileTime (&ft_current
);
4878 FILETIME_TO_U64 (tem1
, ft_kernel
);
4879 *stime
= U64_TO_LISP_TIME (tem1
);
4881 FILETIME_TO_U64 (tem2
, ft_user
);
4882 *utime
= U64_TO_LISP_TIME (tem2
);
4885 *ttime
= U64_TO_LISP_TIME (tem3
);
4887 FILETIME_TO_U64 (tem
, ft_creation
);
4888 /* Process no 4 (System) returns zero creation time. */
4891 *ctime
= U64_TO_LISP_TIME (tem
);
4895 FILETIME_TO_U64 (tem3
, ft_current
);
4896 tem
= (tem3
- utc_base
) - tem
;
4898 *etime
= U64_TO_LISP_TIME (tem
);
4902 *pcpu
= 100.0 * (tem1
+ tem2
) / tem
;
4913 system_process_attributes (Lisp_Object pid
)
4915 struct gcpro gcpro1
, gcpro2
, gcpro3
;
4916 Lisp_Object attrs
= Qnil
;
4917 Lisp_Object cmd_str
, decoded_cmd
, tem
;
4918 HANDLE h_snapshot
, h_proc
;
4921 char uname
[UNLEN
+1], gname
[GNLEN
+1], domain
[1025];
4922 DWORD ulength
= sizeof (uname
), dlength
= sizeof (domain
), needed
;
4923 DWORD glength
= sizeof (gname
);
4924 HANDLE token
= NULL
;
4925 SID_NAME_USE user_type
;
4926 unsigned char *buf
= NULL
;
4928 TOKEN_USER user_token
;
4929 TOKEN_PRIMARY_GROUP group_token
;
4932 PROCESS_MEMORY_COUNTERS mem
;
4933 PROCESS_MEMORY_COUNTERS_EX mem_ex
;
4934 SIZE_T minrss
, maxrss
;
4936 MEMORY_STATUS_EX memstex
;
4937 double totphys
= 0.0;
4938 Lisp_Object ctime
, stime
, utime
, etime
, ttime
;
4940 BOOL result
= FALSE
;
4942 CHECK_NUMBER_OR_FLOAT (pid
);
4943 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
4945 h_snapshot
= create_toolhelp32_snapshot (TH32CS_SNAPPROCESS
, 0);
4947 GCPRO3 (attrs
, decoded_cmd
, tem
);
4949 if (h_snapshot
!= INVALID_HANDLE_VALUE
)
4954 pe
.dwSize
= sizeof (PROCESSENTRY32
);
4955 for (res
= process32_first (h_snapshot
, &pe
); res
;
4956 res
= process32_next (h_snapshot
, &pe
))
4958 if (proc_id
== pe
.th32ProcessID
)
4961 decoded_cmd
= build_string ("Idle");
4964 /* Decode the command name from locale-specific
4966 cmd_str
= make_unibyte_string (pe
.szExeFile
,
4967 strlen (pe
.szExeFile
));
4969 code_convert_string_norecord (cmd_str
,
4970 Vlocale_coding_system
, 0);
4972 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
4973 attrs
= Fcons (Fcons (Qppid
,
4974 make_fixnum_or_float (pe
.th32ParentProcessID
)),
4976 attrs
= Fcons (Fcons (Qpri
, make_number (pe
.pcPriClassBase
)),
4978 attrs
= Fcons (Fcons (Qthcount
,
4979 make_fixnum_or_float (pe
.cntThreads
)),
4986 CloseHandle (h_snapshot
);
4995 h_proc
= OpenProcess (PROCESS_QUERY_INFORMATION
| PROCESS_VM_READ
,
4997 /* If we were denied a handle to the process, try again after
4998 enabling the SeDebugPrivilege in our process. */
5001 TOKEN_PRIVILEGES priv_current
;
5003 if (enable_privilege (SE_DEBUG_NAME
, TRUE
, &priv_current
))
5005 h_proc
= OpenProcess (PROCESS_QUERY_INFORMATION
| PROCESS_VM_READ
,
5007 restore_privilege (&priv_current
);
5013 result
= open_process_token (h_proc
, TOKEN_QUERY
, &token
);
5016 result
= get_token_information (token
, TokenUser
, NULL
, 0, &blen
);
5017 if (!result
&& GetLastError () == ERROR_INSUFFICIENT_BUFFER
)
5019 buf
= xmalloc (blen
);
5020 result
= get_token_information (token
, TokenUser
,
5021 (LPVOID
)buf
, blen
, &needed
);
5024 memcpy (&user_token
, buf
, sizeof (user_token
));
5025 if (!w32_cached_id (user_token
.User
.Sid
, &euid
, uname
))
5027 euid
= get_rid (user_token
.User
.Sid
);
5028 result
= lookup_account_sid (NULL
, user_token
.User
.Sid
,
5033 w32_add_to_cache (user_token
.User
.Sid
, euid
, uname
);
5036 strcpy (uname
, "unknown");
5040 ulength
= strlen (uname
);
5046 /* Determine a reasonable euid and gid values. */
5047 if (xstrcasecmp ("administrator", uname
) == 0)
5049 euid
= 500; /* well-known Administrator uid */
5050 egid
= 513; /* well-known None gid */
5054 /* Get group id and name. */
5055 result
= get_token_information (token
, TokenPrimaryGroup
,
5056 (LPVOID
)buf
, blen
, &needed
);
5057 if (!result
&& GetLastError () == ERROR_INSUFFICIENT_BUFFER
)
5059 buf
= xrealloc (buf
, blen
= needed
);
5060 result
= get_token_information (token
, TokenPrimaryGroup
,
5061 (LPVOID
)buf
, blen
, &needed
);
5065 memcpy (&group_token
, buf
, sizeof (group_token
));
5066 if (!w32_cached_id (group_token
.PrimaryGroup
, &egid
, gname
))
5068 egid
= get_rid (group_token
.PrimaryGroup
);
5069 dlength
= sizeof (domain
);
5071 lookup_account_sid (NULL
, group_token
.PrimaryGroup
,
5072 gname
, &glength
, NULL
, &dlength
,
5075 w32_add_to_cache (group_token
.PrimaryGroup
,
5079 strcpy (gname
, "None");
5083 glength
= strlen (gname
);
5091 if (!is_windows_9x ())
5093 /* We couldn't open the process token, presumably because of
5094 insufficient access rights. Assume this process is run
5096 strcpy (uname
, "SYSTEM");
5097 strcpy (gname
, "None");
5098 euid
= 18; /* SYSTEM */
5099 egid
= 513; /* None */
5100 glength
= strlen (gname
);
5101 ulength
= strlen (uname
);
5103 /* If we are running under Windows 9X, where security calls are
5104 not supported, we assume all processes are run by the current
5106 else if (GetUserName (uname
, &ulength
))
5108 if (xstrcasecmp ("administrator", uname
) == 0)
5113 strcpy (gname
, "None");
5114 glength
= strlen (gname
);
5115 ulength
= strlen (uname
);
5121 strcpy (uname
, "administrator");
5122 ulength
= strlen (uname
);
5123 strcpy (gname
, "None");
5124 glength
= strlen (gname
);
5127 CloseHandle (token
);
5130 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (euid
)), attrs
);
5131 tem
= make_unibyte_string (uname
, ulength
);
5132 attrs
= Fcons (Fcons (Quser
,
5133 code_convert_string_norecord (tem
, Vlocale_coding_system
, 0)),
5135 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (egid
)), attrs
);
5136 tem
= make_unibyte_string (gname
, glength
);
5137 attrs
= Fcons (Fcons (Qgroup
,
5138 code_convert_string_norecord (tem
, Vlocale_coding_system
, 0)),
5141 if (global_memory_status_ex (&memstex
))
5142 #if __GNUC__ || (defined (_MSC_VER) && _MSC_VER >= 1300)
5143 totphys
= memstex
.ullTotalPhys
/ 1024.0;
5145 /* Visual Studio 6 cannot convert an unsigned __int64 type to
5146 double, so we need to do this for it... */
5148 DWORD tot_hi
= memstex
.ullTotalPhys
>> 32;
5149 DWORD tot_md
= (memstex
.ullTotalPhys
& 0x00000000ffffffff) >> 10;
5150 DWORD tot_lo
= memstex
.ullTotalPhys
% 1024;
5152 totphys
= tot_hi
* 4194304.0 + tot_md
+ tot_lo
/ 1024.0;
5154 #endif /* __GNUC__ || _MSC_VER >= 1300 */
5155 else if (global_memory_status (&memst
))
5156 totphys
= memst
.dwTotalPhys
/ 1024.0;
5159 && get_process_memory_info (h_proc
, (PROCESS_MEMORY_COUNTERS
*)&mem_ex
,
5162 SIZE_T rss
= mem_ex
.WorkingSetSize
/ 1024;
5164 attrs
= Fcons (Fcons (Qmajflt
,
5165 make_fixnum_or_float (mem_ex
.PageFaultCount
)),
5167 attrs
= Fcons (Fcons (Qvsize
,
5168 make_fixnum_or_float (mem_ex
.PrivateUsage
/ 1024)),
5170 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (rss
)), attrs
);
5172 attrs
= Fcons (Fcons (Qpmem
, make_float (100. * rss
/ totphys
)), attrs
);
5175 && get_process_memory_info (h_proc
, &mem
, sizeof (mem
)))
5177 SIZE_T rss
= mem_ex
.WorkingSetSize
/ 1024;
5179 attrs
= Fcons (Fcons (Qmajflt
,
5180 make_fixnum_or_float (mem
.PageFaultCount
)),
5182 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (rss
)), attrs
);
5184 attrs
= Fcons (Fcons (Qpmem
, make_float (100. * rss
/ totphys
)), attrs
);
5187 && get_process_working_set_size (h_proc
, &minrss
, &maxrss
))
5189 DWORD rss
= maxrss
/ 1024;
5191 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (maxrss
/ 1024)), attrs
);
5193 attrs
= Fcons (Fcons (Qpmem
, make_float (100. * rss
/ totphys
)), attrs
);
5196 if (process_times (h_proc
, &ctime
, &etime
, &stime
, &utime
, &ttime
, &pcpu
))
5198 attrs
= Fcons (Fcons (Qutime
, utime
), attrs
);
5199 attrs
= Fcons (Fcons (Qstime
, stime
), attrs
);
5200 attrs
= Fcons (Fcons (Qtime
, ttime
), attrs
);
5201 attrs
= Fcons (Fcons (Qstart
, ctime
), attrs
);
5202 attrs
= Fcons (Fcons (Qetime
, etime
), attrs
);
5203 attrs
= Fcons (Fcons (Qpcpu
, make_float (pcpu
)), attrs
);
5206 /* FIXME: Retrieve command line by walking the PEB of the process. */
5209 CloseHandle (h_proc
);
5215 /* Wrappers for winsock functions to map between our file descriptors
5216 and winsock's handles; also set h_errno for convenience.
5218 To allow Emacs to run on systems which don't have winsock support
5219 installed, we dynamically link to winsock on startup if present, and
5220 otherwise provide the minimum necessary functionality
5221 (eg. gethostname). */
5223 /* function pointers for relevant socket functions */
5224 int (PASCAL
*pfn_WSAStartup
) (WORD wVersionRequired
, LPWSADATA lpWSAData
);
5225 void (PASCAL
*pfn_WSASetLastError
) (int iError
);
5226 int (PASCAL
*pfn_WSAGetLastError
) (void);
5227 int (PASCAL
*pfn_WSAEventSelect
) (SOCKET s
, HANDLE hEventObject
, long lNetworkEvents
);
5228 HANDLE (PASCAL
*pfn_WSACreateEvent
) (void);
5229 int (PASCAL
*pfn_WSACloseEvent
) (HANDLE hEvent
);
5230 int (PASCAL
*pfn_socket
) (int af
, int type
, int protocol
);
5231 int (PASCAL
*pfn_bind
) (SOCKET s
, const struct sockaddr
*addr
, int namelen
);
5232 int (PASCAL
*pfn_connect
) (SOCKET s
, const struct sockaddr
*addr
, int namelen
);
5233 int (PASCAL
*pfn_ioctlsocket
) (SOCKET s
, long cmd
, u_long
*argp
);
5234 int (PASCAL
*pfn_recv
) (SOCKET s
, char * buf
, int len
, int flags
);
5235 int (PASCAL
*pfn_send
) (SOCKET s
, const char * buf
, int len
, int flags
);
5236 int (PASCAL
*pfn_closesocket
) (SOCKET s
);
5237 int (PASCAL
*pfn_shutdown
) (SOCKET s
, int how
);
5238 int (PASCAL
*pfn_WSACleanup
) (void);
5240 u_short (PASCAL
*pfn_htons
) (u_short hostshort
);
5241 u_short (PASCAL
*pfn_ntohs
) (u_short netshort
);
5242 unsigned long (PASCAL
*pfn_inet_addr
) (const char * cp
);
5243 int (PASCAL
*pfn_gethostname
) (char * name
, int namelen
);
5244 struct hostent
* (PASCAL
*pfn_gethostbyname
) (const char * name
);
5245 struct servent
* (PASCAL
*pfn_getservbyname
) (const char * name
, const char * proto
);
5246 int (PASCAL
*pfn_getpeername
) (SOCKET s
, struct sockaddr
*addr
, int * namelen
);
5247 int (PASCAL
*pfn_setsockopt
) (SOCKET s
, int level
, int optname
,
5248 const char * optval
, int optlen
);
5249 int (PASCAL
*pfn_listen
) (SOCKET s
, int backlog
);
5250 int (PASCAL
*pfn_getsockname
) (SOCKET s
, struct sockaddr
* name
,
5252 SOCKET (PASCAL
*pfn_accept
) (SOCKET s
, struct sockaddr
* addr
, int * addrlen
);
5253 int (PASCAL
*pfn_recvfrom
) (SOCKET s
, char * buf
, int len
, int flags
,
5254 struct sockaddr
* from
, int * fromlen
);
5255 int (PASCAL
*pfn_sendto
) (SOCKET s
, const char * buf
, int len
, int flags
,
5256 const struct sockaddr
* to
, int tolen
);
5258 /* SetHandleInformation is only needed to make sockets non-inheritable. */
5259 BOOL (WINAPI
*pfn_SetHandleInformation
) (HANDLE object
, DWORD mask
, DWORD flags
);
5260 #ifndef HANDLE_FLAG_INHERIT
5261 #define HANDLE_FLAG_INHERIT 1
5265 static int winsock_inuse
;
5270 if (winsock_lib
!= NULL
&& winsock_inuse
== 0)
5272 /* Not sure what would cause WSAENETDOWN, or even if it can happen
5273 after WSAStartup returns successfully, but it seems reasonable
5274 to allow unloading winsock anyway in that case. */
5275 if (pfn_WSACleanup () == 0 ||
5276 pfn_WSAGetLastError () == WSAENETDOWN
)
5278 if (FreeLibrary (winsock_lib
))
5287 init_winsock (int load_now
)
5289 WSADATA winsockData
;
5291 if (winsock_lib
!= NULL
)
5294 pfn_SetHandleInformation
5295 = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"),
5296 "SetHandleInformation");
5298 winsock_lib
= LoadLibrary ("Ws2_32.dll");
5300 if (winsock_lib
!= NULL
)
5302 /* dynamically link to socket functions */
5304 #define LOAD_PROC(fn) \
5305 if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \
5308 LOAD_PROC (WSAStartup
);
5309 LOAD_PROC (WSASetLastError
);
5310 LOAD_PROC (WSAGetLastError
);
5311 LOAD_PROC (WSAEventSelect
);
5312 LOAD_PROC (WSACreateEvent
);
5313 LOAD_PROC (WSACloseEvent
);
5316 LOAD_PROC (connect
);
5317 LOAD_PROC (ioctlsocket
);
5320 LOAD_PROC (closesocket
);
5321 LOAD_PROC (shutdown
);
5324 LOAD_PROC (inet_addr
);
5325 LOAD_PROC (gethostname
);
5326 LOAD_PROC (gethostbyname
);
5327 LOAD_PROC (getservbyname
);
5328 LOAD_PROC (getpeername
);
5329 LOAD_PROC (WSACleanup
);
5330 LOAD_PROC (setsockopt
);
5332 LOAD_PROC (getsockname
);
5334 LOAD_PROC (recvfrom
);
5338 /* specify version 1.1 of winsock */
5339 if (pfn_WSAStartup (0x101, &winsockData
) == 0)
5341 if (winsockData
.wVersion
!= 0x101)
5346 /* Report that winsock exists and is usable, but leave
5347 socket functions disabled. I am assuming that calling
5348 WSAStartup does not require any network interaction,
5349 and in particular does not cause or require a dial-up
5350 connection to be established. */
5353 FreeLibrary (winsock_lib
);
5361 FreeLibrary (winsock_lib
);
5371 /* function to set h_errno for compatibility; map winsock error codes to
5372 normal system codes where they overlap (non-overlapping definitions
5373 are already in <sys/socket.h> */
5377 if (winsock_lib
== NULL
)
5380 h_errno
= pfn_WSAGetLastError ();
5384 case WSAEACCES
: h_errno
= EACCES
; break;
5385 case WSAEBADF
: h_errno
= EBADF
; break;
5386 case WSAEFAULT
: h_errno
= EFAULT
; break;
5387 case WSAEINTR
: h_errno
= EINTR
; break;
5388 case WSAEINVAL
: h_errno
= EINVAL
; break;
5389 case WSAEMFILE
: h_errno
= EMFILE
; break;
5390 case WSAENAMETOOLONG
: h_errno
= ENAMETOOLONG
; break;
5391 case WSAENOTEMPTY
: h_errno
= ENOTEMPTY
; break;
5399 if (h_errno
== 0 && winsock_lib
!= NULL
)
5400 pfn_WSASetLastError (0);
5403 /* Extend strerror to handle the winsock-specific error codes. */
5407 } _wsa_errlist
[] = {
5408 {WSAEINTR
, "Interrupted function call"},
5409 {WSAEBADF
, "Bad file descriptor"},
5410 {WSAEACCES
, "Permission denied"},
5411 {WSAEFAULT
, "Bad address"},
5412 {WSAEINVAL
, "Invalid argument"},
5413 {WSAEMFILE
, "Too many open files"},
5415 {WSAEWOULDBLOCK
, "Resource temporarily unavailable"},
5416 {WSAEINPROGRESS
, "Operation now in progress"},
5417 {WSAEALREADY
, "Operation already in progress"},
5418 {WSAENOTSOCK
, "Socket operation on non-socket"},
5419 {WSAEDESTADDRREQ
, "Destination address required"},
5420 {WSAEMSGSIZE
, "Message too long"},
5421 {WSAEPROTOTYPE
, "Protocol wrong type for socket"},
5422 {WSAENOPROTOOPT
, "Bad protocol option"},
5423 {WSAEPROTONOSUPPORT
, "Protocol not supported"},
5424 {WSAESOCKTNOSUPPORT
, "Socket type not supported"},
5425 {WSAEOPNOTSUPP
, "Operation not supported"},
5426 {WSAEPFNOSUPPORT
, "Protocol family not supported"},
5427 {WSAEAFNOSUPPORT
, "Address family not supported by protocol family"},
5428 {WSAEADDRINUSE
, "Address already in use"},
5429 {WSAEADDRNOTAVAIL
, "Cannot assign requested address"},
5430 {WSAENETDOWN
, "Network is down"},
5431 {WSAENETUNREACH
, "Network is unreachable"},
5432 {WSAENETRESET
, "Network dropped connection on reset"},
5433 {WSAECONNABORTED
, "Software caused connection abort"},
5434 {WSAECONNRESET
, "Connection reset by peer"},
5435 {WSAENOBUFS
, "No buffer space available"},
5436 {WSAEISCONN
, "Socket is already connected"},
5437 {WSAENOTCONN
, "Socket is not connected"},
5438 {WSAESHUTDOWN
, "Cannot send after socket shutdown"},
5439 {WSAETOOMANYREFS
, "Too many references"}, /* not sure */
5440 {WSAETIMEDOUT
, "Connection timed out"},
5441 {WSAECONNREFUSED
, "Connection refused"},
5442 {WSAELOOP
, "Network loop"}, /* not sure */
5443 {WSAENAMETOOLONG
, "Name is too long"},
5444 {WSAEHOSTDOWN
, "Host is down"},
5445 {WSAEHOSTUNREACH
, "No route to host"},
5446 {WSAENOTEMPTY
, "Buffer not empty"}, /* not sure */
5447 {WSAEPROCLIM
, "Too many processes"},
5448 {WSAEUSERS
, "Too many users"}, /* not sure */
5449 {WSAEDQUOT
, "Double quote in host name"}, /* really not sure */
5450 {WSAESTALE
, "Data is stale"}, /* not sure */
5451 {WSAEREMOTE
, "Remote error"}, /* not sure */
5453 {WSASYSNOTREADY
, "Network subsystem is unavailable"},
5454 {WSAVERNOTSUPPORTED
, "WINSOCK.DLL version out of range"},
5455 {WSANOTINITIALISED
, "Winsock not initialized successfully"},
5456 {WSAEDISCON
, "Graceful shutdown in progress"},
5458 {WSAENOMORE
, "No more operations allowed"}, /* not sure */
5459 {WSAECANCELLED
, "Operation cancelled"}, /* not sure */
5460 {WSAEINVALIDPROCTABLE
, "Invalid procedure table from service provider"},
5461 {WSAEINVALIDPROVIDER
, "Invalid service provider version number"},
5462 {WSAEPROVIDERFAILEDINIT
, "Unable to initialize a service provider"},
5463 {WSASYSCALLFAILURE
, "System call failure"},
5464 {WSASERVICE_NOT_FOUND
, "Service not found"}, /* not sure */
5465 {WSATYPE_NOT_FOUND
, "Class type not found"},
5466 {WSA_E_NO_MORE
, "No more resources available"}, /* really not sure */
5467 {WSA_E_CANCELLED
, "Operation already cancelled"}, /* really not sure */
5468 {WSAEREFUSED
, "Operation refused"}, /* not sure */
5471 {WSAHOST_NOT_FOUND
, "Host not found"},
5472 {WSATRY_AGAIN
, "Authoritative host not found during name lookup"},
5473 {WSANO_RECOVERY
, "Non-recoverable error during name lookup"},
5474 {WSANO_DATA
, "Valid name, no data record of requested type"},
5480 sys_strerror (int error_no
)
5483 static char unknown_msg
[40];
5485 if (error_no
>= 0 && error_no
< sys_nerr
)
5486 return sys_errlist
[error_no
];
5488 for (i
= 0; _wsa_errlist
[i
].errnum
>= 0; i
++)
5489 if (_wsa_errlist
[i
].errnum
== error_no
)
5490 return _wsa_errlist
[i
].msg
;
5492 sprintf (unknown_msg
, "Unidentified error: %d", error_no
);
5496 /* [andrewi 3-May-96] I've had conflicting results using both methods,
5497 but I believe the method of keeping the socket handle separate (and
5498 insuring it is not inheritable) is the correct one. */
5500 #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd)
5502 static int socket_to_fd (SOCKET s
);
5505 sys_socket (int af
, int type
, int protocol
)
5509 if (winsock_lib
== NULL
)
5512 return INVALID_SOCKET
;
5517 /* call the real socket function */
5518 s
= pfn_socket (af
, type
, protocol
);
5520 if (s
!= INVALID_SOCKET
)
5521 return socket_to_fd (s
);
5527 /* Convert a SOCKET to a file descriptor. */
5529 socket_to_fd (SOCKET s
)
5534 /* Although under NT 3.5 _open_osfhandle will accept a socket
5535 handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT,
5536 that does not work under NT 3.1. However, we can get the same
5537 effect by using a backdoor function to replace an existing
5538 descriptor handle with the one we want. */
5540 /* allocate a file descriptor (with appropriate flags) */
5541 fd
= _open ("NUL:", _O_RDWR
);
5544 /* Make a non-inheritable copy of the socket handle. Note
5545 that it is possible that sockets aren't actually kernel
5546 handles, which appears to be the case on Windows 9x when
5547 the MS Proxy winsock client is installed. */
5549 /* Apparently there is a bug in NT 3.51 with some service
5550 packs, which prevents using DuplicateHandle to make a
5551 socket handle non-inheritable (causes WSACleanup to
5552 hang). The work-around is to use SetHandleInformation
5553 instead if it is available and implemented. */
5554 if (pfn_SetHandleInformation
)
5556 pfn_SetHandleInformation ((HANDLE
) s
, HANDLE_FLAG_INHERIT
, 0);
5560 HANDLE parent
= GetCurrentProcess ();
5561 HANDLE new_s
= INVALID_HANDLE_VALUE
;
5563 if (DuplicateHandle (parent
,
5569 DUPLICATE_SAME_ACCESS
))
5571 /* It is possible that DuplicateHandle succeeds even
5572 though the socket wasn't really a kernel handle,
5573 because a real handle has the same value. So
5574 test whether the new handle really is a socket. */
5575 long nonblocking
= 0;
5576 if (pfn_ioctlsocket ((SOCKET
) new_s
, FIONBIO
, &nonblocking
) == 0)
5578 pfn_closesocket (s
);
5583 CloseHandle (new_s
);
5588 fd_info
[fd
].hnd
= (HANDLE
) s
;
5590 /* set our own internal flags */
5591 fd_info
[fd
].flags
= FILE_SOCKET
| FILE_BINARY
| FILE_READ
| FILE_WRITE
;
5597 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
5599 /* attach child_process to fd_info */
5600 if (fd_info
[ fd
].cp
!= NULL
)
5602 DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd
));
5606 fd_info
[ fd
].cp
= cp
;
5609 winsock_inuse
++; /* count open sockets */
5616 pfn_closesocket (s
);
5622 sys_bind (int s
, const struct sockaddr
* addr
, int namelen
)
5624 if (winsock_lib
== NULL
)
5627 return SOCKET_ERROR
;
5631 if (fd_info
[s
].flags
& FILE_SOCKET
)
5633 int rc
= pfn_bind (SOCK_HANDLE (s
), addr
, namelen
);
5634 if (rc
== SOCKET_ERROR
)
5639 return SOCKET_ERROR
;
5643 sys_connect (int s
, const struct sockaddr
* name
, int namelen
)
5645 if (winsock_lib
== NULL
)
5648 return SOCKET_ERROR
;
5652 if (fd_info
[s
].flags
& FILE_SOCKET
)
5654 int rc
= pfn_connect (SOCK_HANDLE (s
), name
, namelen
);
5655 if (rc
== SOCKET_ERROR
)
5660 return SOCKET_ERROR
;
5664 sys_htons (u_short hostshort
)
5666 return (winsock_lib
!= NULL
) ?
5667 pfn_htons (hostshort
) : hostshort
;
5671 sys_ntohs (u_short netshort
)
5673 return (winsock_lib
!= NULL
) ?
5674 pfn_ntohs (netshort
) : netshort
;
5678 sys_inet_addr (const char * cp
)
5680 return (winsock_lib
!= NULL
) ?
5681 pfn_inet_addr (cp
) : INADDR_NONE
;
5685 sys_gethostname (char * name
, int namelen
)
5687 if (winsock_lib
!= NULL
)
5688 return pfn_gethostname (name
, namelen
);
5690 if (namelen
> MAX_COMPUTERNAME_LENGTH
)
5691 return !GetComputerName (name
, (DWORD
*)&namelen
);
5694 return SOCKET_ERROR
;
5698 sys_gethostbyname (const char * name
)
5700 struct hostent
* host
;
5702 if (winsock_lib
== NULL
)
5709 host
= pfn_gethostbyname (name
);
5716 sys_getservbyname (const char * name
, const char * proto
)
5718 struct servent
* serv
;
5720 if (winsock_lib
== NULL
)
5727 serv
= pfn_getservbyname (name
, proto
);
5734 sys_getpeername (int s
, struct sockaddr
*addr
, int * namelen
)
5736 if (winsock_lib
== NULL
)
5739 return SOCKET_ERROR
;
5743 if (fd_info
[s
].flags
& FILE_SOCKET
)
5745 int rc
= pfn_getpeername (SOCK_HANDLE (s
), addr
, namelen
);
5746 if (rc
== SOCKET_ERROR
)
5751 return SOCKET_ERROR
;
5755 sys_shutdown (int s
, int how
)
5757 if (winsock_lib
== NULL
)
5760 return SOCKET_ERROR
;
5764 if (fd_info
[s
].flags
& FILE_SOCKET
)
5766 int rc
= pfn_shutdown (SOCK_HANDLE (s
), how
);
5767 if (rc
== SOCKET_ERROR
)
5772 return SOCKET_ERROR
;
5776 sys_setsockopt (int s
, int level
, int optname
, const void * optval
, int optlen
)
5778 if (winsock_lib
== NULL
)
5781 return SOCKET_ERROR
;
5785 if (fd_info
[s
].flags
& FILE_SOCKET
)
5787 int rc
= pfn_setsockopt (SOCK_HANDLE (s
), level
, optname
,
5788 (const char *)optval
, optlen
);
5789 if (rc
== SOCKET_ERROR
)
5794 return SOCKET_ERROR
;
5798 sys_listen (int s
, int backlog
)
5800 if (winsock_lib
== NULL
)
5803 return SOCKET_ERROR
;
5807 if (fd_info
[s
].flags
& FILE_SOCKET
)
5809 int rc
= pfn_listen (SOCK_HANDLE (s
), backlog
);
5810 if (rc
== SOCKET_ERROR
)
5813 fd_info
[s
].flags
|= FILE_LISTEN
;
5817 return SOCKET_ERROR
;
5821 sys_getsockname (int s
, struct sockaddr
* name
, int * namelen
)
5823 if (winsock_lib
== NULL
)
5826 return SOCKET_ERROR
;
5830 if (fd_info
[s
].flags
& FILE_SOCKET
)
5832 int rc
= pfn_getsockname (SOCK_HANDLE (s
), name
, namelen
);
5833 if (rc
== SOCKET_ERROR
)
5838 return SOCKET_ERROR
;
5842 sys_accept (int s
, struct sockaddr
* addr
, int * addrlen
)
5844 if (winsock_lib
== NULL
)
5851 if (fd_info
[s
].flags
& FILE_LISTEN
)
5853 SOCKET t
= pfn_accept (SOCK_HANDLE (s
), addr
, addrlen
);
5855 if (t
== INVALID_SOCKET
)
5858 fd
= socket_to_fd (t
);
5860 fd_info
[s
].cp
->status
= STATUS_READ_ACKNOWLEDGED
;
5861 ResetEvent (fd_info
[s
].cp
->char_avail
);
5869 sys_recvfrom (int s
, char * buf
, int len
, int flags
,
5870 struct sockaddr
* from
, int * fromlen
)
5872 if (winsock_lib
== NULL
)
5875 return SOCKET_ERROR
;
5879 if (fd_info
[s
].flags
& FILE_SOCKET
)
5881 int rc
= pfn_recvfrom (SOCK_HANDLE (s
), buf
, len
, flags
, from
, fromlen
);
5882 if (rc
== SOCKET_ERROR
)
5887 return SOCKET_ERROR
;
5891 sys_sendto (int s
, const char * buf
, int len
, int flags
,
5892 const struct sockaddr
* to
, int tolen
)
5894 if (winsock_lib
== NULL
)
5897 return SOCKET_ERROR
;
5901 if (fd_info
[s
].flags
& FILE_SOCKET
)
5903 int rc
= pfn_sendto (SOCK_HANDLE (s
), buf
, len
, flags
, to
, tolen
);
5904 if (rc
== SOCKET_ERROR
)
5909 return SOCKET_ERROR
;
5912 /* Windows does not have an fcntl function. Provide an implementation
5913 solely for making sockets non-blocking. */
5915 fcntl (int s
, int cmd
, int options
)
5917 if (winsock_lib
== NULL
)
5924 if (fd_info
[s
].flags
& FILE_SOCKET
)
5926 if (cmd
== F_SETFL
&& options
== O_NDELAY
)
5928 unsigned long nblock
= 1;
5929 int rc
= pfn_ioctlsocket (SOCK_HANDLE (s
), FIONBIO
, &nblock
);
5930 if (rc
== SOCKET_ERROR
)
5932 /* Keep track of the fact that we set this to non-blocking. */
5933 fd_info
[s
].flags
|= FILE_NDELAY
;
5939 return SOCKET_ERROR
;
5943 return SOCKET_ERROR
;
5947 /* Shadow main io functions: we need to handle pipes and sockets more
5948 intelligently, and implement non-blocking mode as well. */
5961 if (fd
< MAXDESC
&& fd_info
[fd
].cp
)
5963 child_process
* cp
= fd_info
[fd
].cp
;
5965 fd_info
[fd
].cp
= NULL
;
5967 if (CHILD_ACTIVE (cp
))
5969 /* if last descriptor to active child_process then cleanup */
5971 for (i
= 0; i
< MAXDESC
; i
++)
5975 if (fd_info
[i
].cp
== cp
)
5980 if (fd_info
[fd
].flags
& FILE_SOCKET
)
5982 if (winsock_lib
== NULL
) emacs_abort ();
5984 pfn_shutdown (SOCK_HANDLE (fd
), 2);
5985 rc
= pfn_closesocket (SOCK_HANDLE (fd
));
5987 winsock_inuse
--; /* count open sockets */
5994 /* Note that sockets do not need special treatment here (at least on
5995 NT and Windows 95 using the standard tcp/ip stacks) - it appears that
5996 closesocket is equivalent to CloseHandle, which is to be expected
5997 because socket handles are fully fledged kernel handles. */
6000 if (rc
== 0 && fd
< MAXDESC
)
6001 fd_info
[fd
].flags
= 0;
6012 if (new_fd
>= 0 && new_fd
< MAXDESC
)
6014 /* duplicate our internal info as well */
6015 fd_info
[new_fd
] = fd_info
[fd
];
6021 sys_dup2 (int src
, int dst
)
6025 if (dst
< 0 || dst
>= MAXDESC
)
6031 /* make sure we close the destination first if it's a pipe or socket */
6032 if (src
!= dst
&& fd_info
[dst
].flags
!= 0)
6035 rc
= _dup2 (src
, dst
);
6038 /* duplicate our internal info as well */
6039 fd_info
[dst
] = fd_info
[src
];
6044 /* Unix pipe() has only one arg */
6046 sys_pipe (int * phandles
)
6051 /* make pipe handles non-inheritable; when we spawn a child, we
6052 replace the relevant handle with an inheritable one. Also put
6053 pipes into binary mode; we will do text mode translation ourselves
6055 rc
= _pipe (phandles
, 0, _O_NOINHERIT
| _O_BINARY
);
6059 /* Protect against overflow, since Windows can open more handles than
6060 our fd_info array has room for. */
6061 if (phandles
[0] >= MAXDESC
|| phandles
[1] >= MAXDESC
)
6063 _close (phandles
[0]);
6064 _close (phandles
[1]);
6069 flags
= FILE_PIPE
| FILE_READ
| FILE_BINARY
;
6070 fd_info
[phandles
[0]].flags
= flags
;
6072 flags
= FILE_PIPE
| FILE_WRITE
| FILE_BINARY
;
6073 fd_info
[phandles
[1]].flags
= flags
;
6080 /* Function to do blocking read of one byte, needed to implement
6081 select. It is only allowed on sockets and pipes. */
6083 _sys_read_ahead (int fd
)
6088 if (fd
< 0 || fd
>= MAXDESC
)
6089 return STATUS_READ_ERROR
;
6091 cp
= fd_info
[fd
].cp
;
6093 if (cp
== NULL
|| cp
->fd
!= fd
|| cp
->status
!= STATUS_READ_READY
)
6094 return STATUS_READ_ERROR
;
6096 if ((fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SERIAL
| FILE_SOCKET
)) == 0
6097 || (fd_info
[fd
].flags
& FILE_READ
) == 0)
6099 DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe, serial port, or socket!\n", fd
));
6103 cp
->status
= STATUS_READ_IN_PROGRESS
;
6105 if (fd_info
[fd
].flags
& FILE_PIPE
)
6107 rc
= _read (fd
, &cp
->chr
, sizeof (char));
6109 /* Give subprocess time to buffer some more output for us before
6110 reporting that input is available; we need this because Windows 95
6111 connects DOS programs to pipes by making the pipe appear to be
6112 the normal console stdout - as a result most DOS programs will
6113 write to stdout without buffering, ie. one character at a
6114 time. Even some W32 programs do this - "dir" in a command
6115 shell on NT is very slow if we don't do this. */
6118 int wait
= w32_pipe_read_delay
;
6124 /* Yield remainder of our time slice, effectively giving a
6125 temporary priority boost to the child process. */
6129 else if (fd_info
[fd
].flags
& FILE_SERIAL
)
6131 HANDLE hnd
= fd_info
[fd
].hnd
;
6132 OVERLAPPED
*ovl
= &fd_info
[fd
].cp
->ovl_read
;
6135 /* Configure timeouts for blocking read. */
6136 if (!GetCommTimeouts (hnd
, &ct
))
6137 return STATUS_READ_ERROR
;
6138 ct
.ReadIntervalTimeout
= 0;
6139 ct
.ReadTotalTimeoutMultiplier
= 0;
6140 ct
.ReadTotalTimeoutConstant
= 0;
6141 if (!SetCommTimeouts (hnd
, &ct
))
6142 return STATUS_READ_ERROR
;
6144 if (!ReadFile (hnd
, &cp
->chr
, sizeof (char), (DWORD
*) &rc
, ovl
))
6146 if (GetLastError () != ERROR_IO_PENDING
)
6147 return STATUS_READ_ERROR
;
6148 if (!GetOverlappedResult (hnd
, ovl
, (DWORD
*) &rc
, TRUE
))
6149 return STATUS_READ_ERROR
;
6152 else if (fd_info
[fd
].flags
& FILE_SOCKET
)
6154 unsigned long nblock
= 0;
6155 /* We always want this to block, so temporarily disable NDELAY. */
6156 if (fd_info
[fd
].flags
& FILE_NDELAY
)
6157 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
6159 rc
= pfn_recv (SOCK_HANDLE (fd
), &cp
->chr
, sizeof (char), 0);
6161 if (fd_info
[fd
].flags
& FILE_NDELAY
)
6164 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
6168 if (rc
== sizeof (char))
6169 cp
->status
= STATUS_READ_SUCCEEDED
;
6171 cp
->status
= STATUS_READ_FAILED
;
6177 _sys_wait_accept (int fd
)
6183 if (fd
< 0 || fd
>= MAXDESC
)
6184 return STATUS_READ_ERROR
;
6186 cp
= fd_info
[fd
].cp
;
6188 if (cp
== NULL
|| cp
->fd
!= fd
|| cp
->status
!= STATUS_READ_READY
)
6189 return STATUS_READ_ERROR
;
6191 cp
->status
= STATUS_READ_FAILED
;
6193 hEv
= pfn_WSACreateEvent ();
6194 rc
= pfn_WSAEventSelect (SOCK_HANDLE (fd
), hEv
, FD_ACCEPT
);
6195 if (rc
!= SOCKET_ERROR
)
6197 rc
= WaitForSingleObject (hEv
, INFINITE
);
6198 pfn_WSAEventSelect (SOCK_HANDLE (fd
), NULL
, 0);
6199 if (rc
== WAIT_OBJECT_0
)
6200 cp
->status
= STATUS_READ_SUCCEEDED
;
6202 pfn_WSACloseEvent (hEv
);
6208 sys_read (int fd
, char * buffer
, unsigned int count
)
6213 char * orig_buffer
= buffer
;
6221 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SOCKET
| FILE_SERIAL
))
6223 child_process
*cp
= fd_info
[fd
].cp
;
6225 if ((fd_info
[fd
].flags
& FILE_READ
) == 0)
6233 /* re-read CR carried over from last read */
6234 if (fd_info
[fd
].flags
& FILE_LAST_CR
)
6236 if (fd_info
[fd
].flags
& FILE_BINARY
) emacs_abort ();
6240 fd_info
[fd
].flags
&= ~FILE_LAST_CR
;
6243 /* presence of a child_process structure means we are operating in
6244 non-blocking mode - otherwise we just call _read directly.
6245 Note that the child_process structure might be missing because
6246 reap_subprocess has been called; in this case the pipe is
6247 already broken, so calling _read on it is okay. */
6250 int current_status
= cp
->status
;
6252 switch (current_status
)
6254 case STATUS_READ_FAILED
:
6255 case STATUS_READ_ERROR
:
6256 /* report normal EOF if nothing in buffer */
6258 fd_info
[fd
].flags
|= FILE_AT_EOF
;
6261 case STATUS_READ_READY
:
6262 case STATUS_READ_IN_PROGRESS
:
6263 DebPrint (("sys_read called when read is in progress\n"));
6264 errno
= EWOULDBLOCK
;
6267 case STATUS_READ_SUCCEEDED
:
6268 /* consume read-ahead char */
6269 *buffer
++ = cp
->chr
;
6272 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
6273 ResetEvent (cp
->char_avail
);
6275 case STATUS_READ_ACKNOWLEDGED
:
6279 DebPrint (("sys_read: bad status %d\n", current_status
));
6284 if (fd_info
[fd
].flags
& FILE_PIPE
)
6286 PeekNamedPipe ((HANDLE
) _get_osfhandle (fd
), NULL
, 0, NULL
, &waiting
, NULL
);
6287 to_read
= min (waiting
, (DWORD
) count
);
6290 nchars
+= _read (fd
, buffer
, to_read
);
6292 else if (fd_info
[fd
].flags
& FILE_SERIAL
)
6294 HANDLE hnd
= fd_info
[fd
].hnd
;
6295 OVERLAPPED
*ovl
= &fd_info
[fd
].cp
->ovl_read
;
6301 /* Configure timeouts for non-blocking read. */
6302 if (!GetCommTimeouts (hnd
, &ct
))
6307 ct
.ReadIntervalTimeout
= MAXDWORD
;
6308 ct
.ReadTotalTimeoutMultiplier
= 0;
6309 ct
.ReadTotalTimeoutConstant
= 0;
6310 if (!SetCommTimeouts (hnd
, &ct
))
6316 if (!ResetEvent (ovl
->hEvent
))
6321 if (!ReadFile (hnd
, buffer
, count
, (DWORD
*) &rc
, ovl
))
6323 if (GetLastError () != ERROR_IO_PENDING
)
6328 if (!GetOverlappedResult (hnd
, ovl
, (DWORD
*) &rc
, TRUE
))
6337 else /* FILE_SOCKET */
6339 if (winsock_lib
== NULL
) emacs_abort ();
6341 /* do the equivalent of a non-blocking read */
6342 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONREAD
, &waiting
);
6343 if (waiting
== 0 && nchars
== 0)
6345 h_errno
= errno
= EWOULDBLOCK
;
6351 /* always use binary mode for sockets */
6352 int res
= pfn_recv (SOCK_HANDLE (fd
), buffer
, count
, 0);
6353 if (res
== SOCKET_ERROR
)
6355 DebPrint (("sys_read.recv failed with error %d on socket %ld\n",
6356 pfn_WSAGetLastError (), SOCK_HANDLE (fd
)));
6366 int nread
= _read (fd
, buffer
, count
);
6369 else if (nchars
== 0)
6374 fd_info
[fd
].flags
|= FILE_AT_EOF
;
6375 /* Perform text mode translation if required. */
6376 else if ((fd_info
[fd
].flags
& FILE_BINARY
) == 0)
6378 nchars
= crlf_to_lf (nchars
, orig_buffer
);
6379 /* If buffer contains only CR, return that. To be absolutely
6380 sure we should attempt to read the next char, but in
6381 practice a CR to be followed by LF would not appear by
6382 itself in the buffer. */
6383 if (nchars
> 1 && orig_buffer
[nchars
- 1] == 0x0d)
6385 fd_info
[fd
].flags
|= FILE_LAST_CR
;
6391 nchars
= _read (fd
, buffer
, count
);
6396 /* From w32xfns.c */
6397 extern HANDLE interrupt_handle
;
6399 /* For now, don't bother with a non-blocking mode */
6401 sys_write (int fd
, const void * buffer
, unsigned int count
)
6411 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SOCKET
| FILE_SERIAL
))
6413 if ((fd_info
[fd
].flags
& FILE_WRITE
) == 0)
6419 /* Perform text mode translation if required. */
6420 if ((fd_info
[fd
].flags
& FILE_BINARY
) == 0)
6422 char * tmpbuf
= alloca (count
* 2);
6423 unsigned char * src
= (void *)buffer
;
6424 unsigned char * dst
= tmpbuf
;
6429 unsigned char *next
;
6430 /* copy next line or remaining bytes */
6431 next
= _memccpy (dst
, src
, '\n', nbytes
);
6434 /* copied one line ending with '\n' */
6435 int copied
= next
- dst
;
6438 /* insert '\r' before '\n' */
6445 /* copied remaining partial line -> now finished */
6452 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& FILE_SERIAL
)
6454 HANDLE hnd
= (HANDLE
) _get_osfhandle (fd
);
6455 OVERLAPPED
*ovl
= &fd_info
[fd
].cp
->ovl_write
;
6456 HANDLE wait_hnd
[2] = { interrupt_handle
, ovl
->hEvent
};
6459 if (!WriteFile (hnd
, buffer
, count
, (DWORD
*) &nchars
, ovl
))
6461 if (GetLastError () != ERROR_IO_PENDING
)
6466 if (detect_input_pending ())
6467 active
= MsgWaitForMultipleObjects (2, wait_hnd
, FALSE
, INFINITE
,
6470 active
= WaitForMultipleObjects (2, wait_hnd
, FALSE
, INFINITE
);
6471 if (active
== WAIT_OBJECT_0
)
6472 { /* User pressed C-g, cancel write, then leave. Don't bother
6473 cleaning up as we may only get stuck in buggy drivers. */
6474 PurgeComm (hnd
, PURGE_TXABORT
| PURGE_TXCLEAR
);
6479 if (active
== WAIT_OBJECT_0
+ 1
6480 && !GetOverlappedResult (hnd
, ovl
, (DWORD
*) &nchars
, TRUE
))
6487 else if (fd
< MAXDESC
&& fd_info
[fd
].flags
& FILE_SOCKET
)
6489 unsigned long nblock
= 0;
6490 if (winsock_lib
== NULL
) emacs_abort ();
6492 /* TODO: implement select() properly so non-blocking I/O works. */
6493 /* For now, make sure the write blocks. */
6494 if (fd_info
[fd
].flags
& FILE_NDELAY
)
6495 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
6497 nchars
= pfn_send (SOCK_HANDLE (fd
), buffer
, count
, 0);
6499 /* Set the socket back to non-blocking if it was before,
6500 for other operations that support it. */
6501 if (fd_info
[fd
].flags
& FILE_NDELAY
)
6504 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
6507 if (nchars
== SOCKET_ERROR
)
6509 DebPrint (("sys_write.send failed with error %d on socket %ld\n",
6510 pfn_WSAGetLastError (), SOCK_HANDLE (fd
)));
6516 /* Some networked filesystems don't like too large writes, so
6517 break them into smaller chunks. See the Comments section of
6518 the MSDN documentation of WriteFile for details behind the
6519 choice of the value of CHUNK below. See also the thread
6520 http://thread.gmane.org/gmane.comp.version-control.git/145294
6521 in the git mailing list. */
6522 const unsigned char *p
= buffer
;
6523 const unsigned chunk
= 30 * 1024 * 1024;
6528 unsigned this_chunk
= count
< chunk
? count
: chunk
;
6529 int n
= _write (fd
, p
, this_chunk
);
6537 else if (n
< this_chunk
)
6547 /* The Windows CRT functions are "optimized for speed", so they don't
6548 check for timezone and DST changes if they were last called less
6549 than 1 minute ago (see http://support.microsoft.com/kb/821231). So
6550 all Emacs features that repeatedly call time functions (e.g.,
6551 display-time) are in real danger of missing timezone and DST
6552 changes. Calling tzset before each localtime call fixes that. */
6554 sys_localtime (const time_t *t
)
6557 return localtime (t
);
6562 /* Try loading LIBRARY_ID from the file(s) specified in
6563 Vdynamic_library_alist. If the library is loaded successfully,
6564 return the handle of the DLL, and record the filename in the
6565 property :loaded-from of LIBRARY_ID. If the library could not be
6566 found, or when it was already loaded (because the handle is not
6567 recorded anywhere, and so is lost after use), return NULL.
6569 We could also save the handle in :loaded-from, but currently
6570 there's no use case for it. */
6572 w32_delayed_load (Lisp_Object library_id
)
6574 HMODULE library_dll
= NULL
;
6576 CHECK_SYMBOL (library_id
);
6578 if (CONSP (Vdynamic_library_alist
)
6579 && NILP (Fassq (library_id
, Vlibrary_cache
)))
6581 Lisp_Object found
= Qnil
;
6582 Lisp_Object dlls
= Fassq (library_id
, Vdynamic_library_alist
);
6585 for (dlls
= XCDR (dlls
); CONSP (dlls
); dlls
= XCDR (dlls
))
6587 CHECK_STRING_CAR (dlls
);
6588 if ((library_dll
= LoadLibrary (SDATA (XCAR (dlls
)))))
6590 char name
[MAX_PATH
];
6593 len
= GetModuleFileNameA (library_dll
, name
, sizeof (name
));
6594 found
= Fcons (XCAR (dlls
),
6596 /* Possibly truncated */
6597 ? make_specified_string (name
, -1, len
, 1)
6603 Fput (library_id
, QCloaded_from
, found
);
6611 check_windows_init_file (void)
6613 /* A common indication that Emacs is not installed properly is when
6614 it cannot find the Windows installation file. If this file does
6615 not exist in the expected place, tell the user. */
6617 if (!noninteractive
&& !inhibit_window_system
6618 /* Vload_path is not yet initialized when we are loading
6620 && NILP (Vpurify_flag
))
6622 Lisp_Object init_file
;
6625 init_file
= build_string ("term/w32-win");
6626 fd
= openp (Vload_path
, init_file
, Fget_load_suffixes (), NULL
, Qnil
);
6629 Lisp_Object load_path_print
= Fprin1_to_string (Vload_path
, Qnil
);
6630 char *init_file_name
= SDATA (init_file
);
6631 char *load_path
= SDATA (load_path_print
);
6632 char *buffer
= alloca (1024
6633 + strlen (init_file_name
)
6634 + strlen (load_path
));
6637 "The Emacs Windows initialization file \"%s.el\" "
6638 "could not be found in your Emacs installation. "
6639 "Emacs checked the following directories for this file:\n"
6641 "When Emacs cannot find this file, it usually means that it "
6642 "was not installed properly, or its distribution file was "
6643 "not unpacked properly.\nSee the README.W32 file in the "
6644 "top-level Emacs directory for more information.",
6645 init_file_name
, load_path
);
6648 "Emacs Abort Dialog",
6649 MB_OK
| MB_ICONEXCLAMATION
| MB_TASKMODAL
);
6650 /* Use the low-level system abort. */
6661 term_ntproc (int ignored
)
6667 /* shutdown the socket interface if necessary */
6674 init_ntproc (int dumping
)
6676 sigset_t initial_mask
= 0;
6678 /* Initialize the socket interface now if available and requested by
6679 the user by defining PRELOAD_WINSOCK; otherwise loading will be
6680 delayed until open-network-stream is called (w32-has-winsock can
6681 also be used to dynamically load or reload winsock).
6683 Conveniently, init_environment is called before us, so
6684 PRELOAD_WINSOCK can be set in the registry. */
6686 /* Always initialize this correctly. */
6689 if (getenv ("PRELOAD_WINSOCK") != NULL
)
6690 init_winsock (TRUE
);
6692 /* Initial preparation for subprocess support: replace our standard
6693 handles with non-inheritable versions. */
6696 HANDLE stdin_save
= INVALID_HANDLE_VALUE
;
6697 HANDLE stdout_save
= INVALID_HANDLE_VALUE
;
6698 HANDLE stderr_save
= INVALID_HANDLE_VALUE
;
6700 parent
= GetCurrentProcess ();
6702 /* ignore errors when duplicating and closing; typically the
6703 handles will be invalid when running as a gui program. */
6704 DuplicateHandle (parent
,
6705 GetStdHandle (STD_INPUT_HANDLE
),
6710 DUPLICATE_SAME_ACCESS
);
6712 DuplicateHandle (parent
,
6713 GetStdHandle (STD_OUTPUT_HANDLE
),
6718 DUPLICATE_SAME_ACCESS
);
6720 DuplicateHandle (parent
,
6721 GetStdHandle (STD_ERROR_HANDLE
),
6726 DUPLICATE_SAME_ACCESS
);
6732 if (stdin_save
!= INVALID_HANDLE_VALUE
)
6733 _open_osfhandle ((intptr_t) stdin_save
, O_TEXT
);
6735 _open ("nul", O_TEXT
| O_NOINHERIT
| O_RDONLY
);
6738 if (stdout_save
!= INVALID_HANDLE_VALUE
)
6739 _open_osfhandle ((intptr_t) stdout_save
, O_TEXT
);
6741 _open ("nul", O_TEXT
| O_NOINHERIT
| O_WRONLY
);
6744 if (stderr_save
!= INVALID_HANDLE_VALUE
)
6745 _open_osfhandle ((intptr_t) stderr_save
, O_TEXT
);
6747 _open ("nul", O_TEXT
| O_NOINHERIT
| O_WRONLY
);
6751 /* unfortunately, atexit depends on implementation of malloc */
6752 /* atexit (term_ntproc); */
6755 /* Make sure we start with all signals unblocked. */
6756 sigprocmask (SIG_SETMASK
, &initial_mask
, NULL
);
6757 signal (SIGABRT
, term_ntproc
);
6761 /* determine which drives are fixed, for GetCachedVolumeInformation */
6763 /* GetDriveType must have trailing backslash. */
6764 char drive
[] = "A:\\";
6766 /* Loop over all possible drive letters */
6767 while (*drive
<= 'Z')
6769 /* Record if this drive letter refers to a fixed drive. */
6770 fixed_drives
[DRIVE_INDEX (*drive
)] =
6771 (GetDriveType (drive
) == DRIVE_FIXED
);
6776 /* Reset the volume info cache. */
6777 volume_cache
= NULL
;
6782 shutdown_handler ensures that buffers' autosave files are
6783 up to date when the user logs off, or the system shuts down.
6786 shutdown_handler (DWORD type
)
6788 /* Ctrl-C and Ctrl-Break are already suppressed, so don't handle them. */
6789 if (type
== CTRL_CLOSE_EVENT
/* User closes console window. */
6790 || type
== CTRL_LOGOFF_EVENT
/* User logs off. */
6791 || type
== CTRL_SHUTDOWN_EVENT
) /* User shutsdown. */
6793 /* Shut down cleanly, making sure autosave files are up to date. */
6794 shut_down_emacs (0, Qnil
);
6797 /* Allow other handlers to handle this signal. */
6802 globals_of_w32 is used to initialize those global variables that
6803 must always be initialized on startup even when the global variable
6804 initialized is non zero (see the function main in emacs.c).
6807 globals_of_w32 (void)
6809 HMODULE kernel32
= GetModuleHandle ("kernel32.dll");
6811 get_process_times_fn
= (GetProcessTimes_Proc
)
6812 GetProcAddress (kernel32
, "GetProcessTimes");
6814 DEFSYM (QCloaded_from
, ":loaded-from");
6816 g_b_init_is_windows_9x
= 0;
6817 g_b_init_open_process_token
= 0;
6818 g_b_init_get_token_information
= 0;
6819 g_b_init_lookup_account_sid
= 0;
6820 g_b_init_get_sid_sub_authority
= 0;
6821 g_b_init_get_sid_sub_authority_count
= 0;
6822 g_b_init_get_security_info
= 0;
6823 g_b_init_get_file_security
= 0;
6824 g_b_init_get_security_descriptor_owner
= 0;
6825 g_b_init_get_security_descriptor_group
= 0;
6826 g_b_init_is_valid_sid
= 0;
6827 g_b_init_create_toolhelp32_snapshot
= 0;
6828 g_b_init_process32_first
= 0;
6829 g_b_init_process32_next
= 0;
6830 g_b_init_open_thread_token
= 0;
6831 g_b_init_impersonate_self
= 0;
6832 g_b_init_revert_to_self
= 0;
6833 g_b_init_get_process_memory_info
= 0;
6834 g_b_init_get_process_working_set_size
= 0;
6835 g_b_init_global_memory_status
= 0;
6836 g_b_init_global_memory_status_ex
= 0;
6837 g_b_init_equal_sid
= 0;
6838 g_b_init_copy_sid
= 0;
6839 g_b_init_get_length_sid
= 0;
6840 g_b_init_get_native_system_info
= 0;
6841 g_b_init_get_system_times
= 0;
6842 g_b_init_create_symbolic_link
= 0;
6843 num_of_processors
= 0;
6844 /* The following sets a handler for shutdown notifications for
6845 console apps. This actually applies to Emacs in both console and
6846 GUI modes, since we had to fool windows into thinking emacs is a
6847 console application to get console mode to work. */
6848 SetConsoleCtrlHandler (shutdown_handler
, TRUE
);
6850 /* "None" is the default group name on standalone workstations. */
6851 strcpy (dflt_group_name
, "None");
6854 /* For make-serial-process */
6856 serial_open (char *port
)
6862 hnd
= CreateFile (port
, GENERIC_READ
| GENERIC_WRITE
, 0, 0,
6863 OPEN_EXISTING
, FILE_FLAG_OVERLAPPED
, 0);
6864 if (hnd
== INVALID_HANDLE_VALUE
)
6865 error ("Could not open %s", port
);
6866 fd
= (int) _open_osfhandle ((intptr_t) hnd
, 0);
6868 error ("Could not open %s", port
);
6872 error ("Could not create child process");
6874 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
6875 fd_info
[ fd
].hnd
= hnd
;
6876 fd_info
[ fd
].flags
|=
6877 FILE_READ
| FILE_WRITE
| FILE_BINARY
| FILE_SERIAL
;
6878 if (fd_info
[ fd
].cp
!= NULL
)
6880 error ("fd_info[fd = %d] is already in use", fd
);
6882 fd_info
[ fd
].cp
= cp
;
6883 cp
->ovl_read
.hEvent
= CreateEvent (NULL
, TRUE
, FALSE
, NULL
);
6884 if (cp
->ovl_read
.hEvent
== NULL
)
6885 error ("Could not create read event");
6886 cp
->ovl_write
.hEvent
= CreateEvent (NULL
, TRUE
, FALSE
, NULL
);
6887 if (cp
->ovl_write
.hEvent
== NULL
)
6888 error ("Could not create write event");
6893 /* For serial-process-configure */
6895 serial_configure (struct Lisp_Process
*p
, Lisp_Object contact
)
6897 Lisp_Object childp2
= Qnil
;
6898 Lisp_Object tem
= Qnil
;
6902 char summary
[4] = "???"; /* This usually becomes "8N1". */
6904 if ((fd_info
[ p
->outfd
].flags
& FILE_SERIAL
) == 0)
6905 error ("Not a serial process");
6906 hnd
= fd_info
[ p
->outfd
].hnd
;
6908 childp2
= Fcopy_sequence (p
->childp
);
6910 /* Initialize timeouts for blocking read and blocking write. */
6911 if (!GetCommTimeouts (hnd
, &ct
))
6912 error ("GetCommTimeouts() failed");
6913 ct
.ReadIntervalTimeout
= 0;
6914 ct
.ReadTotalTimeoutMultiplier
= 0;
6915 ct
.ReadTotalTimeoutConstant
= 0;
6916 ct
.WriteTotalTimeoutMultiplier
= 0;
6917 ct
.WriteTotalTimeoutConstant
= 0;
6918 if (!SetCommTimeouts (hnd
, &ct
))
6919 error ("SetCommTimeouts() failed");
6920 /* Read port attributes and prepare default configuration. */
6921 memset (&dcb
, 0, sizeof (dcb
));
6922 dcb
.DCBlength
= sizeof (DCB
);
6923 if (!GetCommState (hnd
, &dcb
))
6924 error ("GetCommState() failed");
6927 dcb
.fAbortOnError
= FALSE
;
6928 /* dcb.XonLim and dcb.XoffLim are set by GetCommState() */
6933 /* Configure speed. */
6934 if (!NILP (Fplist_member (contact
, QCspeed
)))
6935 tem
= Fplist_get (contact
, QCspeed
);
6937 tem
= Fplist_get (p
->childp
, QCspeed
);
6939 dcb
.BaudRate
= XINT (tem
);
6940 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
6942 /* Configure bytesize. */
6943 if (!NILP (Fplist_member (contact
, QCbytesize
)))
6944 tem
= Fplist_get (contact
, QCbytesize
);
6946 tem
= Fplist_get (p
->childp
, QCbytesize
);
6948 tem
= make_number (8);
6950 if (XINT (tem
) != 7 && XINT (tem
) != 8)
6951 error (":bytesize must be nil (8), 7, or 8");
6952 dcb
.ByteSize
= XINT (tem
);
6953 summary
[0] = XINT (tem
) + '0';
6954 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
6956 /* Configure parity. */
6957 if (!NILP (Fplist_member (contact
, QCparity
)))
6958 tem
= Fplist_get (contact
, QCparity
);
6960 tem
= Fplist_get (p
->childp
, QCparity
);
6961 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
6962 error (":parity must be nil (no parity), `even', or `odd'");
6963 dcb
.fParity
= FALSE
;
6964 dcb
.Parity
= NOPARITY
;
6965 dcb
.fErrorChar
= FALSE
;
6970 else if (EQ (tem
, Qeven
))
6974 dcb
.Parity
= EVENPARITY
;
6975 dcb
.fErrorChar
= TRUE
;
6977 else if (EQ (tem
, Qodd
))
6981 dcb
.Parity
= ODDPARITY
;
6982 dcb
.fErrorChar
= TRUE
;
6984 childp2
= Fplist_put (childp2
, QCparity
, tem
);
6986 /* Configure stopbits. */
6987 if (!NILP (Fplist_member (contact
, QCstopbits
)))
6988 tem
= Fplist_get (contact
, QCstopbits
);
6990 tem
= Fplist_get (p
->childp
, QCstopbits
);
6992 tem
= make_number (1);
6994 if (XINT (tem
) != 1 && XINT (tem
) != 2)
6995 error (":stopbits must be nil (1 stopbit), 1, or 2");
6996 summary
[2] = XINT (tem
) + '0';
6997 if (XINT (tem
) == 1)
6998 dcb
.StopBits
= ONESTOPBIT
;
6999 else if (XINT (tem
) == 2)
7000 dcb
.StopBits
= TWOSTOPBITS
;
7001 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
7003 /* Configure flowcontrol. */
7004 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
7005 tem
= Fplist_get (contact
, QCflowcontrol
);
7007 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
7008 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
7009 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
7010 dcb
.fOutxCtsFlow
= FALSE
;
7011 dcb
.fOutxDsrFlow
= FALSE
;
7012 dcb
.fDtrControl
= DTR_CONTROL_DISABLE
;
7013 dcb
.fDsrSensitivity
= FALSE
;
7014 dcb
.fTXContinueOnXoff
= FALSE
;
7017 dcb
.fRtsControl
= RTS_CONTROL_DISABLE
;
7018 dcb
.XonChar
= 17; /* Control-Q */
7019 dcb
.XoffChar
= 19; /* Control-S */
7022 /* Already configured. */
7024 else if (EQ (tem
, Qhw
))
7026 dcb
.fRtsControl
= RTS_CONTROL_HANDSHAKE
;
7027 dcb
.fOutxCtsFlow
= TRUE
;
7029 else if (EQ (tem
, Qsw
))
7034 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
7036 /* Activate configuration. */
7037 if (!SetCommState (hnd
, &dcb
))
7038 error ("SetCommState() failed");
7040 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
7041 pset_childp (p
, childp2
);
7047 emacs_gnutls_pull (gnutls_transport_ptr_t p
, void* buf
, size_t sz
)
7052 struct Lisp_Process
*process
= (struct Lisp_Process
*)p
;
7053 int fd
= process
->infd
;
7057 n
= sys_read (fd
, (char*)buf
, sz
);
7064 if (err
== EWOULDBLOCK
)
7066 /* Set a small timeout. */
7067 timeout
= make_emacs_time (1, 0);
7069 FD_SET ((int)fd
, &fdset
);
7071 /* Use select with the timeout to poll the selector. */
7072 sc
= select (fd
+ 1, &fdset
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
7076 continue; /* Try again. */
7078 /* Translate the WSAEWOULDBLOCK alias EWOULDBLOCK to EAGAIN.
7079 Also accept select return 0 as an indicator to EAGAIN. */
7080 if (sc
== 0 || errno
== EWOULDBLOCK
)
7083 err
= errno
; /* Other errors are just passed on. */
7086 emacs_gnutls_transport_set_errno (process
->gnutls_state
, err
);
7093 emacs_gnutls_push (gnutls_transport_ptr_t p
, const void* buf
, size_t sz
)
7095 struct Lisp_Process
*process
= (struct Lisp_Process
*)p
;
7096 int fd
= process
->outfd
;
7097 ssize_t n
= sys_write (fd
, buf
, sz
);
7099 /* 0 or more bytes written means everything went fine. */
7103 /* Negative bytes written means we got an error in errno.
7104 Translate the WSAEWOULDBLOCK alias EWOULDBLOCK to EAGAIN. */
7105 emacs_gnutls_transport_set_errno (process
->gnutls_state
,
7106 errno
== EWOULDBLOCK
? EAGAIN
: errno
);
7110 #endif /* HAVE_GNUTLS */