1 /* Utility and Unix shadow routines for GNU Emacs on the Microsoft W32 API.
2 Copyright (C) 1994, 1995, 2000, 2001, 2002, 2003, 2004,
3 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA.
22 Geoff Voelker (voelker@cs.washington.edu) 7-29-94
24 #include <stddef.h> /* for offsetof */
34 #include <sys/utime.h>
35 #include <mbstring.h> /* for _mbspbrk */
37 /* must include CRT headers *before* config.h */
72 #define _ANONYMOUS_UNION
73 #define _ANONYMOUS_STRUCT
79 #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */
80 #include <sys/socket.h>
105 typedef HRESULT (WINAPI
* ShGetFolderPath_fn
)
106 (IN HWND
, IN
int, IN HANDLE
, IN DWORD
, OUT
char *);
108 void globals_of_w32 ();
110 extern Lisp_Object Vw32_downcase_file_names
;
111 extern Lisp_Object Vw32_generate_fake_inodes
;
112 extern Lisp_Object Vw32_get_true_file_attributes
;
113 extern int w32_num_mouse_buttons
;
116 /* Initialization states.
118 WARNING: If you add any more such variables for additional APIs,
119 you MUST add initialization for them to globals_of_w32
120 below. This is because these variables might get set
121 to non-NULL values during dumping, but the dumped Emacs
122 cannot reuse those values, because it could be run on a
123 different version of the OS, where API addresses are
125 static BOOL g_b_init_is_windows_9x
;
126 static BOOL g_b_init_open_process_token
;
127 static BOOL g_b_init_get_token_information
;
128 static BOOL g_b_init_lookup_account_sid
;
129 static BOOL g_b_init_get_sid_identifier_authority
;
130 static BOOL g_b_init_get_sid_sub_authority
;
131 static BOOL g_b_init_get_sid_sub_authority_count
;
134 BEGIN: Wrapper functions around OpenProcessToken
135 and other functions in advapi32.dll that are only
136 supported in Windows NT / 2k / XP
138 /* ** Function pointer typedefs ** */
139 typedef BOOL (WINAPI
* OpenProcessToken_Proc
) (
140 HANDLE ProcessHandle
,
142 PHANDLE TokenHandle
);
143 typedef BOOL (WINAPI
* GetTokenInformation_Proc
) (
145 TOKEN_INFORMATION_CLASS TokenInformationClass
,
146 LPVOID TokenInformation
,
147 DWORD TokenInformationLength
,
148 PDWORD ReturnLength
);
149 typedef BOOL (WINAPI
* GetProcessTimes_Proc
) (
150 HANDLE process_handle
,
151 LPFILETIME creation_time
,
152 LPFILETIME exit_time
,
153 LPFILETIME kernel_time
,
154 LPFILETIME user_time
);
156 GetProcessTimes_Proc get_process_times_fn
= NULL
;
159 const char * const LookupAccountSid_Name
= "LookupAccountSidW";
161 const char * const LookupAccountSid_Name
= "LookupAccountSidA";
163 typedef BOOL (WINAPI
* LookupAccountSid_Proc
) (
164 LPCTSTR lpSystemName
,
169 LPDWORD cbDomainName
,
170 PSID_NAME_USE peUse
);
171 typedef PSID_IDENTIFIER_AUTHORITY (WINAPI
* GetSidIdentifierAuthority_Proc
) (
173 typedef PDWORD (WINAPI
* GetSidSubAuthority_Proc
) (
176 typedef PUCHAR (WINAPI
* GetSidSubAuthorityCount_Proc
) (
180 /* ** A utility function ** */
184 static BOOL s_b_ret
=0;
185 OSVERSIONINFO os_ver
;
186 if (g_b_init_is_windows_9x
== 0)
188 g_b_init_is_windows_9x
= 1;
189 ZeroMemory(&os_ver
, sizeof(OSVERSIONINFO
));
190 os_ver
.dwOSVersionInfoSize
= sizeof(OSVERSIONINFO
);
191 if (GetVersionEx (&os_ver
))
193 s_b_ret
= (os_ver
.dwPlatformId
== VER_PLATFORM_WIN32_WINDOWS
);
199 /* Get total user and system times for get-internal-run-time.
200 Returns a list of three integers if the times are provided by the OS
201 (NT derivatives), otherwise it returns the result of current-time. */
203 w32_get_internal_run_time ()
205 if (get_process_times_fn
)
207 FILETIME create
, exit
, kernel
, user
;
208 HANDLE proc
= GetCurrentProcess();
209 if ((*get_process_times_fn
) (proc
, &create
, &exit
, &kernel
, &user
))
211 LARGE_INTEGER user_int
, kernel_int
, total
;
213 user_int
.LowPart
= user
.dwLowDateTime
;
214 user_int
.HighPart
= user
.dwHighDateTime
;
215 kernel_int
.LowPart
= kernel
.dwLowDateTime
;
216 kernel_int
.HighPart
= kernel
.dwHighDateTime
;
217 total
.QuadPart
= user_int
.QuadPart
+ kernel_int
.QuadPart
;
218 /* FILETIME is 100 nanosecond increments, Emacs only wants
219 microsecond resolution. */
220 total
.QuadPart
/= 10;
221 microseconds
= total
.QuadPart
% 1000000;
222 total
.QuadPart
/= 1000000;
224 /* Sanity check to make sure we can represent the result. */
225 if (total
.HighPart
== 0)
227 int secs
= total
.LowPart
;
229 return list3 (make_number ((secs
>> 16) & 0xffff),
230 make_number (secs
& 0xffff),
231 make_number (microseconds
));
236 return Fcurrent_time ();
239 /* ** The wrapper functions ** */
241 BOOL WINAPI
open_process_token (
242 HANDLE ProcessHandle
,
246 static OpenProcessToken_Proc s_pfn_Open_Process_Token
= NULL
;
247 HMODULE hm_advapi32
= NULL
;
248 if (is_windows_9x () == TRUE
)
252 if (g_b_init_open_process_token
== 0)
254 g_b_init_open_process_token
= 1;
255 hm_advapi32
= LoadLibrary ("Advapi32.dll");
256 s_pfn_Open_Process_Token
=
257 (OpenProcessToken_Proc
) GetProcAddress (hm_advapi32
, "OpenProcessToken");
259 if (s_pfn_Open_Process_Token
== NULL
)
264 s_pfn_Open_Process_Token (
271 BOOL WINAPI
get_token_information (
273 TOKEN_INFORMATION_CLASS TokenInformationClass
,
274 LPVOID TokenInformation
,
275 DWORD TokenInformationLength
,
278 static GetTokenInformation_Proc s_pfn_Get_Token_Information
= NULL
;
279 HMODULE hm_advapi32
= NULL
;
280 if (is_windows_9x () == TRUE
)
284 if (g_b_init_get_token_information
== 0)
286 g_b_init_get_token_information
= 1;
287 hm_advapi32
= LoadLibrary ("Advapi32.dll");
288 s_pfn_Get_Token_Information
=
289 (GetTokenInformation_Proc
) GetProcAddress (hm_advapi32
, "GetTokenInformation");
291 if (s_pfn_Get_Token_Information
== NULL
)
296 s_pfn_Get_Token_Information (
298 TokenInformationClass
,
300 TokenInformationLength
,
305 BOOL WINAPI
lookup_account_sid (
306 LPCTSTR lpSystemName
,
311 LPDWORD cbDomainName
,
314 static LookupAccountSid_Proc s_pfn_Lookup_Account_Sid
= NULL
;
315 HMODULE hm_advapi32
= NULL
;
316 if (is_windows_9x () == TRUE
)
320 if (g_b_init_lookup_account_sid
== 0)
322 g_b_init_lookup_account_sid
= 1;
323 hm_advapi32
= LoadLibrary ("Advapi32.dll");
324 s_pfn_Lookup_Account_Sid
=
325 (LookupAccountSid_Proc
) GetProcAddress (hm_advapi32
, LookupAccountSid_Name
);
327 if (s_pfn_Lookup_Account_Sid
== NULL
)
332 s_pfn_Lookup_Account_Sid (
343 PSID_IDENTIFIER_AUTHORITY WINAPI
get_sid_identifier_authority (
346 static GetSidIdentifierAuthority_Proc s_pfn_Get_Sid_Identifier_Authority
= NULL
;
347 HMODULE hm_advapi32
= NULL
;
348 if (is_windows_9x () == TRUE
)
352 if (g_b_init_get_sid_identifier_authority
== 0)
354 g_b_init_get_sid_identifier_authority
= 1;
355 hm_advapi32
= LoadLibrary ("Advapi32.dll");
356 s_pfn_Get_Sid_Identifier_Authority
=
357 (GetSidIdentifierAuthority_Proc
) GetProcAddress (
358 hm_advapi32
, "GetSidIdentifierAuthority");
360 if (s_pfn_Get_Sid_Identifier_Authority
== NULL
)
364 return (s_pfn_Get_Sid_Identifier_Authority (pSid
));
367 PDWORD WINAPI
get_sid_sub_authority (
371 static GetSidSubAuthority_Proc s_pfn_Get_Sid_Sub_Authority
= NULL
;
372 static DWORD zero
= 0U;
373 HMODULE hm_advapi32
= NULL
;
374 if (is_windows_9x () == TRUE
)
378 if (g_b_init_get_sid_sub_authority
== 0)
380 g_b_init_get_sid_sub_authority
= 1;
381 hm_advapi32
= LoadLibrary ("Advapi32.dll");
382 s_pfn_Get_Sid_Sub_Authority
=
383 (GetSidSubAuthority_Proc
) GetProcAddress (
384 hm_advapi32
, "GetSidSubAuthority");
386 if (s_pfn_Get_Sid_Sub_Authority
== NULL
)
390 return (s_pfn_Get_Sid_Sub_Authority (pSid
, n
));
393 PUCHAR WINAPI
get_sid_sub_authority_count (
396 static GetSidSubAuthorityCount_Proc s_pfn_Get_Sid_Sub_Authority_Count
= NULL
;
397 static UCHAR zero
= 0U;
398 HMODULE hm_advapi32
= NULL
;
399 if (is_windows_9x () == TRUE
)
403 if (g_b_init_get_sid_sub_authority_count
== 0)
405 g_b_init_get_sid_sub_authority_count
= 1;
406 hm_advapi32
= LoadLibrary ("Advapi32.dll");
407 s_pfn_Get_Sid_Sub_Authority_Count
=
408 (GetSidSubAuthorityCount_Proc
) GetProcAddress (
409 hm_advapi32
, "GetSidSubAuthorityCount");
411 if (s_pfn_Get_Sid_Sub_Authority_Count
== NULL
)
415 return (s_pfn_Get_Sid_Sub_Authority_Count (pSid
));
419 END: Wrapper functions around OpenProcessToken
420 and other functions in advapi32.dll that are only
421 supported in Windows NT / 2k / XP
425 /* Equivalent of strerror for W32 error codes. */
427 w32_strerror (int error_no
)
429 static char buf
[500];
432 error_no
= GetLastError ();
435 if (!FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM
, NULL
,
437 0, /* choose most suitable language */
438 buf
, sizeof (buf
), NULL
))
439 sprintf (buf
, "w32 error %u", error_no
);
443 /* Return 1 if P is a valid pointer to an object of size SIZE. Return
444 0 if P is NOT a valid pointer. Return -1 if we cannot validate P.
446 This is called from alloc.c:valid_pointer_p. */
448 w32_valid_pointer_p (void *p
, int size
)
451 HANDLE h
= OpenProcess (PROCESS_VM_READ
, FALSE
, GetCurrentProcessId ());
455 unsigned char *buf
= alloca (size
);
456 int retval
= ReadProcessMemory (h
, p
, buf
, size
, &done
);
465 static char startup_dir
[MAXPATHLEN
];
467 /* Get the current working directory. */
472 if (GetCurrentDirectory (MAXPATHLEN
, dir
) > 0)
476 /* Emacs doesn't actually change directory itself, and we want to
477 force our real wd to be where emacs.exe is to avoid unnecessary
478 conflicts when trying to rename or delete directories. */
479 strcpy (dir
, startup_dir
);
485 /* Emulate gethostname. */
487 gethostname (char *buffer
, int size
)
489 /* NT only allows small host names, so the buffer is
490 certainly large enough. */
491 return !GetComputerName (buffer
, &size
);
493 #endif /* HAVE_SOCKETS */
495 /* Emulate getloadavg. */
497 getloadavg (double loadavg
[], int nelem
)
501 /* A faithful emulation is going to have to be saved for a rainy day. */
502 for (i
= 0; i
< nelem
; i
++)
509 /* Emulate getpwuid, getpwnam and others. */
511 #define PASSWD_FIELD_SIZE 256
513 static char the_passwd_name
[PASSWD_FIELD_SIZE
];
514 static char the_passwd_passwd
[PASSWD_FIELD_SIZE
];
515 static char the_passwd_gecos
[PASSWD_FIELD_SIZE
];
516 static char the_passwd_dir
[PASSWD_FIELD_SIZE
];
517 static char the_passwd_shell
[PASSWD_FIELD_SIZE
];
519 static struct passwd the_passwd
=
531 static struct group the_group
=
533 /* There are no groups on NT, so we just return "root" as the
541 return the_passwd
.pw_uid
;
547 /* I could imagine arguing for checking to see whether the user is
548 in the Administrators group and returning a UID of 0 for that
549 case, but I don't know how wise that would be in the long run. */
556 return the_passwd
.pw_gid
;
568 if (uid
== the_passwd
.pw_uid
)
580 getpwnam (char *name
)
584 pw
= getpwuid (getuid ());
588 if (stricmp (name
, pw
->pw_name
))
597 /* Find the user's real name by opening the process token and
598 looking up the name associated with the user-sid in that token.
600 Use the relative portion of the identifier authority value from
601 the user-sid as the user id value (same for group id using the
602 primary group sid from the process token). */
604 char name
[UNLEN
+1], domain
[1025];
605 DWORD length
= sizeof (name
), dlength
= sizeof (domain
), trash
;
607 SID_NAME_USE user_type
;
608 unsigned char buf
[1024];
609 TOKEN_USER user_token
;
610 TOKEN_PRIMARY_GROUP group_token
;
612 if (open_process_token (GetCurrentProcess (), TOKEN_QUERY
, &token
)
613 && get_token_information (token
, TokenUser
,
614 (PVOID
)buf
, sizeof (buf
), &trash
)
615 && (memcpy (&user_token
, buf
, sizeof (user_token
)),
616 lookup_account_sid (NULL
, user_token
.User
.Sid
, name
, &length
,
617 domain
, &dlength
, &user_type
)))
619 strcpy (the_passwd
.pw_name
, name
);
620 /* Determine a reasonable uid value. */
621 if (stricmp ("administrator", name
) == 0)
623 the_passwd
.pw_uid
= 500; /* well-known Administrator uid */
624 the_passwd
.pw_gid
= 513; /* well-known None gid */
628 /* Use the last sub-authority value of the RID, the relative
629 portion of the SID, as user/group ID. */
630 DWORD n_subauthorities
=
631 *get_sid_sub_authority_count (user_token
.User
.Sid
);
633 if (n_subauthorities
< 1)
634 the_passwd
.pw_uid
= 0; /* the "World" RID */
638 *get_sid_sub_authority (user_token
.User
.Sid
,
639 n_subauthorities
- 1);
640 /* Restrict to conventional uid range for normal users. */
641 the_passwd
.pw_uid
%= 60001;
645 if (get_token_information (token
, TokenPrimaryGroup
,
646 (PVOID
)buf
, sizeof (buf
), &trash
))
648 memcpy (&group_token
, buf
, sizeof (group_token
));
650 *get_sid_sub_authority_count (group_token
.PrimaryGroup
);
652 if (n_subauthorities
< 1)
653 the_passwd
.pw_gid
= 0; /* the "World" RID */
657 *get_sid_sub_authority (group_token
.PrimaryGroup
,
658 n_subauthorities
- 1);
659 /* I don't know if this is necessary, but for safety... */
660 the_passwd
.pw_gid
%= 60001;
664 the_passwd
.pw_gid
= the_passwd
.pw_uid
;
667 /* If security calls are not supported (presumably because we
668 are running under Windows 95), fallback to this. */
669 else if (GetUserName (name
, &length
))
671 strcpy (the_passwd
.pw_name
, name
);
672 if (stricmp ("administrator", name
) == 0)
673 the_passwd
.pw_uid
= 0;
675 the_passwd
.pw_uid
= 123;
676 the_passwd
.pw_gid
= the_passwd
.pw_uid
;
680 strcpy (the_passwd
.pw_name
, "unknown");
681 the_passwd
.pw_uid
= 123;
682 the_passwd
.pw_gid
= 123;
685 /* Ensure HOME and SHELL are defined. */
686 if (getenv ("HOME") == NULL
)
688 if (getenv ("SHELL") == NULL
)
691 /* Set dir and shell from environment variables. */
692 strcpy (the_passwd
.pw_dir
, getenv ("HOME"));
693 strcpy (the_passwd
.pw_shell
, getenv ("SHELL"));
702 /* rand () on NT gives us 15 random bits...hack together 30 bits. */
703 return ((rand () << 15) | rand ());
713 /* Normalize filename by converting all path separators to
714 the specified separator. Also conditionally convert upper
715 case path name components to lower case. */
718 normalize_filename (fp
, path_sep
)
725 /* Always lower-case drive letters a-z, even if the filesystem
726 preserves case in filenames.
727 This is so filenames can be compared by string comparison
728 functions that are case-sensitive. Even case-preserving filesystems
729 do not distinguish case in drive letters. */
730 if (fp
[1] == ':' && *fp
>= 'A' && *fp
<= 'Z')
736 if (NILP (Vw32_downcase_file_names
))
740 if (*fp
== '/' || *fp
== '\\')
747 sep
= path_sep
; /* convert to this path separator */
748 elem
= fp
; /* start of current path element */
751 if (*fp
>= 'a' && *fp
<= 'z')
752 elem
= 0; /* don't convert this element */
754 if (*fp
== 0 || *fp
== ':')
756 sep
= *fp
; /* restore current separator (or 0) */
757 *fp
= '/'; /* after conversion of this element */
760 if (*fp
== '/' || *fp
== '\\')
762 if (elem
&& elem
!= fp
)
764 *fp
= 0; /* temporary end of string */
765 _strlwr (elem
); /* while we convert to lower case */
767 *fp
= sep
; /* convert (or restore) path separator */
768 elem
= fp
+ 1; /* next element starts after separator */
774 /* Destructively turn backslashes into slashes. */
776 dostounix_filename (p
)
779 normalize_filename (p
, '/');
782 /* Destructively turn slashes into backslashes. */
784 unixtodos_filename (p
)
787 normalize_filename (p
, '\\');
790 /* Remove all CR's that are followed by a LF.
791 (From msdos.c...probably should figure out a way to share it,
792 although this code isn't going to ever change.) */
796 register unsigned char *buf
;
798 unsigned char *np
= buf
;
799 unsigned char *startp
= buf
;
800 unsigned char *endp
= buf
+ n
;
804 while (buf
< endp
- 1)
808 if (*(++buf
) != 0x0a)
819 /* Parse the root part of file name, if present. Return length and
820 optionally store pointer to char after root. */
822 parse_root (char * name
, char ** pPath
)
829 /* find the root name of the volume if given */
830 if (isalpha (name
[0]) && name
[1] == ':')
832 /* skip past drive specifier */
834 if (IS_DIRECTORY_SEP (name
[0]))
837 else if (IS_DIRECTORY_SEP (name
[0]) && IS_DIRECTORY_SEP (name
[1]))
843 if (IS_DIRECTORY_SEP (*name
) && --slashes
== 0)
848 if (IS_DIRECTORY_SEP (name
[0]))
858 /* Get long base name for name; name is assumed to be absolute. */
860 get_long_basename (char * name
, char * buf
, int size
)
862 WIN32_FIND_DATA find_data
;
866 /* must be valid filename, no wild cards or other invalid characters */
867 if (_mbspbrk (name
, "*?|<>\""))
870 dir_handle
= FindFirstFile (name
, &find_data
);
871 if (dir_handle
!= INVALID_HANDLE_VALUE
)
873 if ((len
= strlen (find_data
.cFileName
)) < size
)
874 memcpy (buf
, find_data
.cFileName
, len
+ 1);
877 FindClose (dir_handle
);
882 /* Get long name for file, if possible (assumed to be absolute). */
884 w32_get_long_filename (char * name
, char * buf
, int size
)
889 char full
[ MAX_PATH
];
896 /* Use local copy for destructive modification. */
897 memcpy (full
, name
, len
+1);
898 unixtodos_filename (full
);
900 /* Copy root part verbatim. */
901 len
= parse_root (full
, &p
);
902 memcpy (o
, full
, len
);
907 while (p
!= NULL
&& *p
)
910 p
= strchr (q
, '\\');
912 len
= get_long_basename (full
, o
, size
);
935 is_unc_volume (const char *filename
)
937 const char *ptr
= filename
;
939 if (!IS_DIRECTORY_SEP (ptr
[0]) || !IS_DIRECTORY_SEP (ptr
[1]) || !ptr
[2])
942 if (_mbspbrk (ptr
+ 2, "*?|<>\"\\/"))
948 /* Routines that are no-ops on NT but are defined to get Emacs to compile. */
951 sigsetmask (int signal_mask
)
975 setpgrp (int pid
, int gid
)
986 #define REG_ROOT "SOFTWARE\\GNU\\Emacs"
989 w32_get_resource (key
, lpdwtype
)
994 HKEY hrootkey
= NULL
;
997 /* Check both the current user and the local machine to see if
998 we have any resources. */
1000 if (RegOpenKeyEx (HKEY_CURRENT_USER
, REG_ROOT
, 0, KEY_READ
, &hrootkey
) == ERROR_SUCCESS
)
1004 if (RegQueryValueEx (hrootkey
, key
, NULL
, NULL
, NULL
, &cbData
) == ERROR_SUCCESS
1005 && (lpvalue
= (LPBYTE
) xmalloc (cbData
)) != NULL
1006 && RegQueryValueEx (hrootkey
, key
, NULL
, lpdwtype
, lpvalue
, &cbData
) == ERROR_SUCCESS
)
1008 RegCloseKey (hrootkey
);
1012 if (lpvalue
) xfree (lpvalue
);
1014 RegCloseKey (hrootkey
);
1017 if (RegOpenKeyEx (HKEY_LOCAL_MACHINE
, REG_ROOT
, 0, KEY_READ
, &hrootkey
) == ERROR_SUCCESS
)
1021 if (RegQueryValueEx (hrootkey
, key
, NULL
, NULL
, NULL
, &cbData
) == ERROR_SUCCESS
1022 && (lpvalue
= (LPBYTE
) xmalloc (cbData
)) != NULL
1023 && RegQueryValueEx (hrootkey
, key
, NULL
, lpdwtype
, lpvalue
, &cbData
) == ERROR_SUCCESS
)
1025 RegCloseKey (hrootkey
);
1029 if (lpvalue
) xfree (lpvalue
);
1031 RegCloseKey (hrootkey
);
1037 char *get_emacs_configuration (void);
1038 extern Lisp_Object Vsystem_configuration
;
1041 init_environment (char ** argv
)
1043 static const char * const tempdirs
[] = {
1044 "$TMPDIR", "$TEMP", "$TMP", "c:/"
1049 const int imax
= sizeof (tempdirs
) / sizeof (tempdirs
[0]);
1051 /* Make sure they have a usable $TMPDIR. Many Emacs functions use
1052 temporary files and assume "/tmp" if $TMPDIR is unset, which
1053 will break on DOS/Windows. Refuse to work if we cannot find
1054 a directory, not even "c:/", usable for that purpose. */
1055 for (i
= 0; i
< imax
; i
++)
1057 const char *tmp
= tempdirs
[i
];
1060 tmp
= getenv (tmp
+ 1);
1061 /* Note that `access' can lie to us if the directory resides on a
1062 read-only filesystem, like CD-ROM or a write-protected floppy.
1063 The only way to be really sure is to actually create a file and
1064 see if it succeeds. But I think that's too much to ask. */
1065 if (tmp
&& _access (tmp
, D_OK
) == 0)
1067 char * var
= alloca (strlen (tmp
) + 8);
1068 sprintf (var
, "TMPDIR=%s", tmp
);
1069 _putenv (strdup (var
));
1076 Fcons (build_string ("no usable temporary directories found!!"),
1078 "While setting TMPDIR: ");
1080 /* Check for environment variables and use registry settings if they
1081 don't exist. Fallback on default values where applicable. */
1086 char locale_name
[32];
1087 struct stat ignored
;
1088 char default_home
[MAX_PATH
];
1090 static const struct env_entry
1097 {"PRELOAD_WINSOCK", NULL
},
1098 {"emacs_dir", "C:/emacs"},
1099 {"EMACSLOADPATH", "%emacs_dir%/site-lisp;%emacs_dir%/../site-lisp;%emacs_dir%/lisp;%emacs_dir%/leim"},
1100 {"SHELL", "%emacs_dir%/bin/cmdproxy.exe"},
1101 {"EMACSDATA", "%emacs_dir%/etc"},
1102 {"EMACSPATH", "%emacs_dir%/bin"},
1103 /* We no longer set INFOPATH because Info-default-directory-list
1105 /* {"INFOPATH", "%emacs_dir%/info"}, */
1106 {"EMACSDOC", "%emacs_dir%/etc"},
1111 #define N_ENV_VARS sizeof(dflt_envvars)/sizeof(dflt_envvars[0])
1113 /* We need to copy dflt_envvars[] and work on the copy because we
1114 don't want the dumped Emacs to inherit the values of
1115 environment variables we saw during dumping (which could be on
1116 a different system). The defaults above must be left intact. */
1117 struct env_entry env_vars
[N_ENV_VARS
];
1119 for (i
= 0; i
< N_ENV_VARS
; i
++)
1120 env_vars
[i
] = dflt_envvars
[i
];
1122 /* For backwards compatibility, check if a .emacs file exists in C:/
1123 If not, then we can try to default to the appdata directory under the
1124 user's profile, which is more likely to be writable. */
1125 if (stat ("C:/.emacs", &ignored
) < 0)
1127 HRESULT profile_result
;
1128 /* Dynamically load ShGetFolderPath, as it won't exist on versions
1129 of Windows 95 and NT4 that have not been updated to include
1130 MSIE 5. Also we don't link with shell32.dll by default. */
1131 HMODULE shell32_dll
;
1132 ShGetFolderPath_fn get_folder_path
;
1133 shell32_dll
= GetModuleHandle ("shell32.dll");
1134 get_folder_path
= (ShGetFolderPath_fn
)
1135 GetProcAddress (shell32_dll
, "SHGetFolderPathA");
1137 if (get_folder_path
!= NULL
)
1139 profile_result
= get_folder_path (NULL
, CSIDL_APPDATA
, NULL
,
1142 /* If we can't get the appdata dir, revert to old behaviour. */
1143 if (profile_result
== S_OK
)
1144 env_vars
[0].def_value
= default_home
;
1147 /* Unload shell32.dll, it is not needed anymore. */
1148 FreeLibrary (shell32_dll
);
1151 /* Get default locale info and use it for LANG. */
1152 if (GetLocaleInfo (LOCALE_USER_DEFAULT
,
1153 LOCALE_SABBREVLANGNAME
| LOCALE_USE_CP_ACP
,
1154 locale_name
, sizeof (locale_name
)))
1156 for (i
= 0; i
< N_ENV_VARS
; i
++)
1158 if (strcmp (env_vars
[i
].name
, "LANG") == 0)
1160 env_vars
[i
].def_value
= locale_name
;
1166 #define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */
1168 /* Treat emacs_dir specially: set it unconditionally based on our
1169 location, if it appears that we are running from the bin subdir
1170 of a standard installation. */
1173 char modname
[MAX_PATH
];
1175 if (!GetModuleFileName (NULL
, modname
, MAX_PATH
))
1177 if ((p
= strrchr (modname
, '\\')) == NULL
)
1181 if ((p
= strrchr (modname
, '\\')) && stricmp (p
, "\\bin") == 0)
1183 char buf
[SET_ENV_BUF_SIZE
];
1186 for (p
= modname
; *p
; p
++)
1187 if (*p
== '\\') *p
= '/';
1189 _snprintf (buf
, sizeof(buf
)-1, "emacs_dir=%s", modname
);
1190 _putenv (strdup (buf
));
1192 /* Handle running emacs from the build directory: src/oo-spd/i386/ */
1194 /* FIXME: should use substring of get_emacs_configuration ().
1195 But I don't think the Windows build supports alpha, mips etc
1196 anymore, so have taken the easy option for now. */
1197 else if (p
&& stricmp (p
, "\\i386") == 0)
1200 p
= strrchr (modname
, '\\');
1204 p
= strrchr (modname
, '\\');
1205 if (p
&& stricmp (p
, "\\src") == 0)
1207 char buf
[SET_ENV_BUF_SIZE
];
1210 for (p
= modname
; *p
; p
++)
1211 if (*p
== '\\') *p
= '/';
1213 _snprintf (buf
, sizeof(buf
)-1, "emacs_dir=%s", modname
);
1214 _putenv (strdup (buf
));
1220 for (i
= 0; i
< N_ENV_VARS
; i
++)
1222 if (!getenv (env_vars
[i
].name
))
1226 if ((lpval
= w32_get_resource (env_vars
[i
].name
, &dwType
)) == NULL
1227 /* Also ignore empty environment variables. */
1230 if (lpval
) xfree (lpval
);
1231 lpval
= env_vars
[i
].def_value
;
1232 dwType
= REG_EXPAND_SZ
;
1238 char buf1
[SET_ENV_BUF_SIZE
], buf2
[SET_ENV_BUF_SIZE
];
1240 if (dwType
== REG_EXPAND_SZ
)
1241 ExpandEnvironmentStrings ((LPSTR
) lpval
, buf1
, sizeof(buf1
));
1242 else if (dwType
== REG_SZ
)
1243 strcpy (buf1
, lpval
);
1244 if (dwType
== REG_EXPAND_SZ
|| dwType
== REG_SZ
)
1246 _snprintf (buf2
, sizeof(buf2
)-1, "%s=%s", env_vars
[i
].name
,
1248 _putenv (strdup (buf2
));
1258 /* Rebuild system configuration to reflect invoking system. */
1259 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
1261 /* Another special case: on NT, the PATH variable is actually named
1262 "Path" although cmd.exe (perhaps NT itself) arranges for
1263 environment variable lookup and setting to be case insensitive.
1264 However, Emacs assumes a fully case sensitive environment, so we
1265 need to change "Path" to "PATH" to match the expectations of
1266 various elisp packages. We do this by the sneaky method of
1267 modifying the string in the C runtime environ entry.
1269 The same applies to COMSPEC. */
1273 for (envp
= environ
; *envp
; envp
++)
1274 if (_strnicmp (*envp
, "PATH=", 5) == 0)
1275 memcpy (*envp
, "PATH=", 5);
1276 else if (_strnicmp (*envp
, "COMSPEC=", 8) == 0)
1277 memcpy (*envp
, "COMSPEC=", 8);
1280 /* Remember the initial working directory for getwd, then make the
1281 real wd be the location of emacs.exe to avoid conflicts when
1282 renaming or deleting directories. (We also don't call chdir when
1283 running subprocesses for the same reason.) */
1284 if (!GetCurrentDirectory (MAXPATHLEN
, startup_dir
))
1289 static char modname
[MAX_PATH
];
1291 if (!GetModuleFileName (NULL
, modname
, MAX_PATH
))
1293 if ((p
= strrchr (modname
, '\\')) == NULL
)
1297 SetCurrentDirectory (modname
);
1299 /* Ensure argv[0] has the full path to Emacs. */
1304 /* Determine if there is a middle mouse button, to allow parse_button
1305 to decide whether right mouse events should be mouse-2 or
1307 w32_num_mouse_buttons
= GetSystemMetrics (SM_CMOUSEBUTTONS
);
1313 emacs_root_dir (void)
1315 static char root_dir
[FILENAME_MAX
];
1318 p
= getenv ("emacs_dir");
1321 strcpy (root_dir
, p
);
1322 root_dir
[parse_root (root_dir
, NULL
)] = '\0';
1323 dostounix_filename (root_dir
);
1327 /* We don't have scripts to automatically determine the system configuration
1328 for Emacs before it's compiled, and we don't want to have to make the
1329 user enter it, so we define EMACS_CONFIGURATION to invoke this runtime
1333 get_emacs_configuration (void)
1335 char *arch
, *oem
, *os
;
1337 static char configuration_buffer
[32];
1339 /* Determine the processor type. */
1340 switch (get_processor_type ())
1343 #ifdef PROCESSOR_INTEL_386
1344 case PROCESSOR_INTEL_386
:
1345 case PROCESSOR_INTEL_486
:
1346 case PROCESSOR_INTEL_PENTIUM
:
1351 #ifdef PROCESSOR_MIPS_R2000
1352 case PROCESSOR_MIPS_R2000
:
1353 case PROCESSOR_MIPS_R3000
:
1354 case PROCESSOR_MIPS_R4000
:
1359 #ifdef PROCESSOR_ALPHA_21064
1360 case PROCESSOR_ALPHA_21064
:
1370 /* Use the OEM field to reflect the compiler/library combination. */
1372 #define COMPILER_NAME "msvc"
1375 #define COMPILER_NAME "mingw"
1377 #define COMPILER_NAME "unknown"
1380 oem
= COMPILER_NAME
;
1382 switch (osinfo_cache
.dwPlatformId
) {
1383 case VER_PLATFORM_WIN32_NT
:
1385 build_num
= osinfo_cache
.dwBuildNumber
;
1387 case VER_PLATFORM_WIN32_WINDOWS
:
1388 if (osinfo_cache
.dwMinorVersion
== 0) {
1393 build_num
= LOWORD (osinfo_cache
.dwBuildNumber
);
1395 case VER_PLATFORM_WIN32s
:
1396 /* Not supported, should not happen. */
1398 build_num
= LOWORD (osinfo_cache
.dwBuildNumber
);
1406 if (osinfo_cache
.dwPlatformId
== VER_PLATFORM_WIN32_NT
) {
1407 sprintf (configuration_buffer
, "%s-%s-%s%d.%d.%d", arch
, oem
, os
,
1408 get_w32_major_version (), get_w32_minor_version (), build_num
);
1410 sprintf (configuration_buffer
, "%s-%s-%s.%d", arch
, oem
, os
, build_num
);
1413 return configuration_buffer
;
1417 get_emacs_configuration_options (void)
1419 static char options_buffer
[256];
1421 /* Work out the effective configure options for this build. */
1423 #define COMPILER_VERSION "--with-msvc (%d.%02d)", _MSC_VER / 100, _MSC_VER % 100
1426 #define COMPILER_VERSION "--with-gcc (%d.%d)", __GNUC__, __GNUC_MINOR__
1428 #define COMPILER_VERSION ""
1432 sprintf (options_buffer
, COMPILER_VERSION
);
1434 strcat (options_buffer
, " --no-opt");
1437 strcat (options_buffer
, " --cflags");
1438 strcat (options_buffer
, USER_CFLAGS
);
1441 strcat (options_buffer
, " --ldflags");
1442 strcat (options_buffer
, USER_LDFLAGS
);
1444 return options_buffer
;
1448 #include <sys/timeb.h>
1450 /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */
1452 gettimeofday (struct timeval
*tv
, struct timezone
*tz
)
1457 tv
->tv_sec
= tb
.time
;
1458 tv
->tv_usec
= tb
.millitm
* 1000L;
1461 tz
->tz_minuteswest
= tb
.timezone
; /* minutes west of Greenwich */
1462 tz
->tz_dsttime
= tb
.dstflag
; /* type of dst correction */
1466 /* ------------------------------------------------------------------------- */
1467 /* IO support and wrapper functions for W32 API. */
1468 /* ------------------------------------------------------------------------- */
1470 /* Place a wrapper around the MSVC version of ctime. It returns NULL
1471 on network directories, so we handle that case here.
1472 (Ulrich Leodolter, 1/11/95). */
1474 sys_ctime (const time_t *t
)
1476 char *str
= (char *) ctime (t
);
1477 return (str
? str
: "Sun Jan 01 00:00:00 1970");
1480 /* Emulate sleep...we could have done this with a define, but that
1481 would necessitate including windows.h in the files that used it.
1482 This is much easier. */
1484 sys_sleep (int seconds
)
1486 Sleep (seconds
* 1000);
1489 /* Internal MSVC functions for low-level descriptor munging */
1490 extern int __cdecl
_set_osfhnd (int fd
, long h
);
1491 extern int __cdecl
_free_osfhnd (int fd
);
1493 /* parallel array of private info on file handles */
1494 filedesc fd_info
[ MAXDESC
];
1496 typedef struct volume_info_data
{
1497 struct volume_info_data
* next
;
1499 /* time when info was obtained */
1502 /* actual volume info */
1511 /* Global referenced by various functions. */
1512 static volume_info_data volume_info
;
1514 /* Vector to indicate which drives are local and fixed (for which cached
1515 data never expires). */
1516 static BOOL fixed_drives
[26];
1518 /* Consider cached volume information to be stale if older than 10s,
1519 at least for non-local drives. Info for fixed drives is never stale. */
1520 #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' )
1521 #define VOLINFO_STILL_VALID( root_dir, info ) \
1522 ( ( isalpha (root_dir[0]) && \
1523 fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \
1524 || GetTickCount () - info->timestamp < 10000 )
1526 /* Cache support functions. */
1528 /* Simple linked list with linear search is sufficient. */
1529 static volume_info_data
*volume_cache
= NULL
;
1531 static volume_info_data
*
1532 lookup_volume_info (char * root_dir
)
1534 volume_info_data
* info
;
1536 for (info
= volume_cache
; info
; info
= info
->next
)
1537 if (stricmp (info
->root_dir
, root_dir
) == 0)
1543 add_volume_info (char * root_dir
, volume_info_data
* info
)
1545 info
->root_dir
= xstrdup (root_dir
);
1546 info
->next
= volume_cache
;
1547 volume_cache
= info
;
1551 /* Wrapper for GetVolumeInformation, which uses caching to avoid
1552 performance penalty (~2ms on 486 for local drives, 7.5ms for local
1553 cdrom drive, ~5-10ms or more for remote drives on LAN). */
1555 GetCachedVolumeInformation (char * root_dir
)
1557 volume_info_data
* info
;
1558 char default_root
[ MAX_PATH
];
1560 /* NULL for root_dir means use root from current directory. */
1561 if (root_dir
== NULL
)
1563 if (GetCurrentDirectory (MAX_PATH
, default_root
) == 0)
1565 parse_root (default_root
, &root_dir
);
1567 root_dir
= default_root
;
1570 /* Local fixed drives can be cached permanently. Removable drives
1571 cannot be cached permanently, since the volume name and serial
1572 number (if nothing else) can change. Remote drives should be
1573 treated as if they are removable, since there is no sure way to
1574 tell whether they are or not. Also, the UNC association of drive
1575 letters mapped to remote volumes can be changed at any time (even
1576 by other processes) without notice.
1578 As a compromise, so we can benefit from caching info for remote
1579 volumes, we use a simple expiry mechanism to invalidate cache
1580 entries that are more than ten seconds old. */
1583 /* No point doing this, because WNetGetConnection is even slower than
1584 GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW,
1585 GetDriveType is about the only call of this type which does not
1586 involve network access, and so is extremely quick). */
1588 /* Map drive letter to UNC if remote. */
1589 if ( isalpha( root_dir
[0] ) && !fixed
[ DRIVE_INDEX( root_dir
[0] ) ] )
1591 char remote_name
[ 256 ];
1592 char drive
[3] = { root_dir
[0], ':' };
1594 if (WNetGetConnection (drive
, remote_name
, sizeof (remote_name
))
1596 /* do something */ ;
1600 info
= lookup_volume_info (root_dir
);
1602 if (info
== NULL
|| ! VOLINFO_STILL_VALID (root_dir
, info
))
1610 /* Info is not cached, or is stale. */
1611 if (!GetVolumeInformation (root_dir
,
1612 name
, sizeof (name
),
1616 type
, sizeof (type
)))
1619 /* Cache the volume information for future use, overwriting existing
1620 entry if present. */
1623 info
= (volume_info_data
*) xmalloc (sizeof (volume_info_data
));
1624 add_volume_info (root_dir
, info
);
1632 info
->name
= xstrdup (name
);
1633 info
->serialnum
= serialnum
;
1634 info
->maxcomp
= maxcomp
;
1635 info
->flags
= flags
;
1636 info
->type
= xstrdup (type
);
1637 info
->timestamp
= GetTickCount ();
1643 /* Get information on the volume where name is held; set path pointer to
1644 start of pathname in name (past UNC header\volume header if present). */
1646 get_volume_info (const char * name
, const char ** pPath
)
1648 char temp
[MAX_PATH
];
1649 char *rootname
= NULL
; /* default to current volume */
1650 volume_info_data
* info
;
1655 /* find the root name of the volume if given */
1656 if (isalpha (name
[0]) && name
[1] == ':')
1664 else if (IS_DIRECTORY_SEP (name
[0]) && IS_DIRECTORY_SEP (name
[1]))
1671 if (IS_DIRECTORY_SEP (*name
) && --slashes
== 0)
1684 info
= GetCachedVolumeInformation (rootname
);
1687 /* Set global referenced by other functions. */
1688 volume_info
= *info
;
1694 /* Determine if volume is FAT format (ie. only supports short 8.3
1695 names); also set path pointer to start of pathname in name. */
1697 is_fat_volume (const char * name
, const char ** pPath
)
1699 if (get_volume_info (name
, pPath
))
1700 return (volume_info
.maxcomp
== 12);
1704 /* Map filename to a valid 8.3 name if necessary. */
1706 map_w32_filename (const char * name
, const char ** pPath
)
1708 static char shortname
[MAX_PATH
];
1709 char * str
= shortname
;
1712 const char * save_name
= name
;
1714 if (strlen (name
) >= MAX_PATH
)
1716 /* Return a filename which will cause callers to fail. */
1717 strcpy (shortname
, "?");
1721 if (is_fat_volume (name
, (const char **)&path
)) /* truncate to 8.3 */
1723 register int left
= 8; /* maximum number of chars in part */
1724 register int extn
= 0; /* extension added? */
1725 register int dots
= 2; /* maximum number of dots allowed */
1728 *str
++ = *name
++; /* skip past UNC header */
1730 while ((c
= *name
++))
1737 extn
= 0; /* reset extension flags */
1738 dots
= 2; /* max 2 dots */
1739 left
= 8; /* max length 8 for main part */
1743 extn
= 0; /* reset extension flags */
1744 dots
= 2; /* max 2 dots */
1745 left
= 8; /* max length 8 for main part */
1750 /* Convert path components of the form .xxx to _xxx,
1751 but leave . and .. as they are. This allows .emacs
1752 to be read as _emacs, for example. */
1756 IS_DIRECTORY_SEP (*name
))
1771 extn
= 1; /* we've got an extension */
1772 left
= 3; /* 3 chars in extension */
1776 /* any embedded dots after the first are converted to _ */
1781 case '#': /* don't lose these, they're important */
1783 str
[-1] = c
; /* replace last character of part */
1788 *str
++ = tolower (c
); /* map to lower case (looks nicer) */
1790 dots
= 0; /* started a path component */
1799 strcpy (shortname
, name
);
1800 unixtodos_filename (shortname
);
1804 *pPath
= shortname
+ (path
- save_name
);
1810 is_exec (const char * name
)
1812 char * p
= strrchr (name
, '.');
1815 && (stricmp (p
, ".exe") == 0 ||
1816 stricmp (p
, ".com") == 0 ||
1817 stricmp (p
, ".bat") == 0 ||
1818 stricmp (p
, ".cmd") == 0));
1821 /* Emulate the Unix directory procedures opendir, closedir,
1822 and readdir. We can't use the procedures supplied in sysdep.c,
1823 so we provide them here. */
1825 struct direct dir_static
; /* simulated directory contents */
1826 static HANDLE dir_find_handle
= INVALID_HANDLE_VALUE
;
1827 static int dir_is_fat
;
1828 static char dir_pathname
[MAXPATHLEN
+1];
1829 static WIN32_FIND_DATA dir_find_data
;
1831 /* Support shares on a network resource as subdirectories of a read-only
1833 static HANDLE wnet_enum_handle
= INVALID_HANDLE_VALUE
;
1834 HANDLE
open_unc_volume (const char *);
1835 char *read_unc_volume (HANDLE
, char *, int);
1836 void close_unc_volume (HANDLE
);
1839 opendir (char *filename
)
1843 /* Opening is done by FindFirstFile. However, a read is inherent to
1844 this operation, so we defer the open until read time. */
1846 if (dir_find_handle
!= INVALID_HANDLE_VALUE
)
1848 if (wnet_enum_handle
!= INVALID_HANDLE_VALUE
)
1851 if (is_unc_volume (filename
))
1853 wnet_enum_handle
= open_unc_volume (filename
);
1854 if (wnet_enum_handle
== INVALID_HANDLE_VALUE
)
1858 if (!(dirp
= (DIR *) malloc (sizeof (DIR))))
1865 strncpy (dir_pathname
, map_w32_filename (filename
, NULL
), MAXPATHLEN
);
1866 dir_pathname
[MAXPATHLEN
] = '\0';
1867 dir_is_fat
= is_fat_volume (filename
, NULL
);
1873 closedir (DIR *dirp
)
1875 /* If we have a find-handle open, close it. */
1876 if (dir_find_handle
!= INVALID_HANDLE_VALUE
)
1878 FindClose (dir_find_handle
);
1879 dir_find_handle
= INVALID_HANDLE_VALUE
;
1881 else if (wnet_enum_handle
!= INVALID_HANDLE_VALUE
)
1883 close_unc_volume (wnet_enum_handle
);
1884 wnet_enum_handle
= INVALID_HANDLE_VALUE
;
1886 xfree ((char *) dirp
);
1892 int downcase
= !NILP (Vw32_downcase_file_names
);
1894 if (wnet_enum_handle
!= INVALID_HANDLE_VALUE
)
1896 if (!read_unc_volume (wnet_enum_handle
,
1897 dir_find_data
.cFileName
,
1901 /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */
1902 else if (dir_find_handle
== INVALID_HANDLE_VALUE
)
1904 char filename
[MAXNAMLEN
+ 3];
1907 strcpy (filename
, dir_pathname
);
1908 ln
= strlen (filename
) - 1;
1909 if (!IS_DIRECTORY_SEP (filename
[ln
]))
1910 strcat (filename
, "\\");
1911 strcat (filename
, "*");
1913 dir_find_handle
= FindFirstFile (filename
, &dir_find_data
);
1915 if (dir_find_handle
== INVALID_HANDLE_VALUE
)
1920 if (!FindNextFile (dir_find_handle
, &dir_find_data
))
1924 /* Emacs never uses this value, so don't bother making it match
1925 value returned by stat(). */
1926 dir_static
.d_ino
= 1;
1928 strcpy (dir_static
.d_name
, dir_find_data
.cFileName
);
1930 /* If the file name in cFileName[] includes `?' characters, it means
1931 the original file name used characters that cannot be represented
1932 by the current ANSI codepage. To avoid total lossage, retrieve
1933 the short 8+3 alias of the long file name. */
1934 if (_mbspbrk (dir_static
.d_name
, "?"))
1936 strcpy (dir_static
.d_name
, dir_find_data
.cAlternateFileName
);
1937 downcase
= 1; /* 8+3 aliases are returned in all caps */
1939 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
1940 dir_static
.d_reclen
= sizeof (struct direct
) - MAXNAMLEN
+ 3 +
1941 dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
1943 _strlwr (dir_static
.d_name
);
1947 for (p
= dir_static
.d_name
; *p
; p
++)
1948 if (*p
>= 'a' && *p
<= 'z')
1951 _strlwr (dir_static
.d_name
);
1958 open_unc_volume (const char *path
)
1964 nr
.dwScope
= RESOURCE_GLOBALNET
;
1965 nr
.dwType
= RESOURCETYPE_DISK
;
1966 nr
.dwDisplayType
= RESOURCEDISPLAYTYPE_SERVER
;
1967 nr
.dwUsage
= RESOURCEUSAGE_CONTAINER
;
1968 nr
.lpLocalName
= NULL
;
1969 nr
.lpRemoteName
= (LPSTR
)map_w32_filename (path
, NULL
);
1970 nr
.lpComment
= NULL
;
1971 nr
.lpProvider
= NULL
;
1973 result
= WNetOpenEnum(RESOURCE_GLOBALNET
, RESOURCETYPE_DISK
,
1974 RESOURCEUSAGE_CONNECTABLE
, &nr
, &henum
);
1976 if (result
== NO_ERROR
)
1979 return INVALID_HANDLE_VALUE
;
1983 read_unc_volume (HANDLE henum
, char *readbuf
, int size
)
1987 DWORD bufsize
= 512;
1992 buffer
= alloca (bufsize
);
1993 result
= WNetEnumResource (wnet_enum_handle
, &count
, buffer
, &bufsize
);
1994 if (result
!= NO_ERROR
)
1997 /* WNetEnumResource returns \\resource\share...skip forward to "share". */
1998 ptr
= ((LPNETRESOURCE
) buffer
)->lpRemoteName
;
2000 while (*ptr
&& !IS_DIRECTORY_SEP (*ptr
)) ptr
++;
2003 strncpy (readbuf
, ptr
, size
);
2008 close_unc_volume (HANDLE henum
)
2010 if (henum
!= INVALID_HANDLE_VALUE
)
2011 WNetCloseEnum (henum
);
2015 unc_volume_file_attributes (const char *path
)
2020 henum
= open_unc_volume (path
);
2021 if (henum
== INVALID_HANDLE_VALUE
)
2024 attrs
= FILE_ATTRIBUTE_READONLY
| FILE_ATTRIBUTE_DIRECTORY
;
2026 close_unc_volume (henum
);
2031 /* Ensure a network connection is authenticated. */
2033 logon_network_drive (const char *path
)
2035 NETRESOURCE resource
;
2036 char share
[MAX_PATH
];
2039 /* Only logon to networked drives. */
2040 if (!IS_DIRECTORY_SEP (path
[0]) || !IS_DIRECTORY_SEP (path
[1]))
2043 strncpy (share
, path
, MAX_PATH
);
2044 /* Truncate to just server and share name. */
2045 for (i
= 2; i
< MAX_PATH
; i
++)
2047 if (IS_DIRECTORY_SEP (share
[i
]) && ++n_slashes
> 3)
2054 resource
.dwType
= RESOURCETYPE_DISK
;
2055 resource
.lpLocalName
= NULL
;
2056 resource
.lpRemoteName
= share
;
2057 resource
.lpProvider
= NULL
;
2059 WNetAddConnection2 (&resource
, NULL
, NULL
, CONNECT_INTERACTIVE
);
2062 /* Shadow some MSVC runtime functions to map requests for long filenames
2063 to reasonable short names if necessary. This was originally added to
2064 permit running Emacs on NT 3.1 on a FAT partition, which doesn't support
2068 sys_access (const char * path
, int mode
)
2072 /* MSVC implementation doesn't recognize D_OK. */
2073 path
= map_w32_filename (path
, NULL
);
2074 if (is_unc_volume (path
))
2076 attributes
= unc_volume_file_attributes (path
);
2077 if (attributes
== -1) {
2082 else if ((attributes
= GetFileAttributes (path
)) == -1)
2084 /* Should try mapping GetLastError to errno; for now just indicate
2085 that path doesn't exist. */
2089 if ((mode
& X_OK
) != 0 && !is_exec (path
))
2094 if ((mode
& W_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_READONLY
) != 0)
2099 if ((mode
& D_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
) == 0)
2108 sys_chdir (const char * path
)
2110 return _chdir (map_w32_filename (path
, NULL
));
2114 sys_chmod (const char * path
, int mode
)
2116 return _chmod (map_w32_filename (path
, NULL
), mode
);
2120 sys_chown (const char *path
, uid_t owner
, gid_t group
)
2122 if (sys_chmod (path
, _S_IREAD
) == -1) /* check if file exists */
2128 sys_creat (const char * path
, int mode
)
2130 return _creat (map_w32_filename (path
, NULL
), mode
);
2134 sys_fopen(const char * path
, const char * mode
)
2138 const char * mode_save
= mode
;
2140 /* Force all file handles to be non-inheritable. This is necessary to
2141 ensure child processes don't unwittingly inherit handles that might
2142 prevent future file access. */
2146 else if (mode
[0] == 'w' || mode
[0] == 'a')
2147 oflag
= O_WRONLY
| O_CREAT
| O_TRUNC
;
2151 /* Only do simplistic option parsing. */
2155 oflag
&= ~(O_RDONLY
| O_WRONLY
);
2158 else if (mode
[0] == 'b')
2163 else if (mode
[0] == 't')
2170 fd
= _open (map_w32_filename (path
, NULL
), oflag
| _O_NOINHERIT
, 0644);
2174 return _fdopen (fd
, mode_save
);
2177 /* This only works on NTFS volumes, but is useful to have. */
2179 sys_link (const char * old
, const char * new)
2183 char oldname
[MAX_PATH
], newname
[MAX_PATH
];
2185 if (old
== NULL
|| new == NULL
)
2191 strcpy (oldname
, map_w32_filename (old
, NULL
));
2192 strcpy (newname
, map_w32_filename (new, NULL
));
2194 fileh
= CreateFile (oldname
, 0, 0, NULL
, OPEN_EXISTING
,
2195 FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
2196 if (fileh
!= INVALID_HANDLE_VALUE
)
2200 /* Confusingly, the "alternate" stream name field does not apply
2201 when restoring a hard link, and instead contains the actual
2202 stream data for the link (ie. the name of the link to create).
2203 The WIN32_STREAM_ID structure before the cStreamName field is
2204 the stream header, which is then immediately followed by the
2208 WIN32_STREAM_ID wid
;
2209 WCHAR wbuffer
[MAX_PATH
]; /* extra space for link name */
2212 wlen
= MultiByteToWideChar (CP_ACP
, MB_PRECOMPOSED
, newname
, -1,
2213 data
.wid
.cStreamName
, MAX_PATH
);
2216 LPVOID context
= NULL
;
2219 data
.wid
.dwStreamId
= BACKUP_LINK
;
2220 data
.wid
.dwStreamAttributes
= 0;
2221 data
.wid
.Size
.LowPart
= wlen
* sizeof(WCHAR
);
2222 data
.wid
.Size
.HighPart
= 0;
2223 data
.wid
.dwStreamNameSize
= 0;
2225 if (BackupWrite (fileh
, (LPBYTE
)&data
,
2226 offsetof (WIN32_STREAM_ID
, cStreamName
)
2227 + data
.wid
.Size
.LowPart
,
2228 &wbytes
, FALSE
, FALSE
, &context
)
2229 && BackupWrite (fileh
, NULL
, 0, &wbytes
, TRUE
, FALSE
, &context
))
2236 /* Should try mapping GetLastError to errno; for now just
2237 indicate a general error (eg. links not supported). */
2238 errno
= EINVAL
; // perhaps EMLINK?
2242 CloseHandle (fileh
);
2251 sys_mkdir (const char * path
)
2253 return _mkdir (map_w32_filename (path
, NULL
));
2256 /* Because of long name mapping issues, we need to implement this
2257 ourselves. Also, MSVC's _mktemp returns NULL when it can't generate
2258 a unique name, instead of setting the input template to an empty
2261 Standard algorithm seems to be use pid or tid with a letter on the
2262 front (in place of the 6 X's) and cycle through the letters to find a
2263 unique name. We extend that to allow any reasonable character as the
2264 first of the 6 X's. */
2266 sys_mktemp (char * template)
2270 unsigned uid
= GetCurrentThreadId ();
2271 static char first_char
[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#";
2273 if (template == NULL
)
2275 p
= template + strlen (template);
2277 /* replace up to the last 5 X's with uid in decimal */
2278 while (--p
>= template && p
[0] == 'X' && --i
>= 0)
2280 p
[0] = '0' + uid
% 10;
2284 if (i
< 0 && p
[0] == 'X')
2289 int save_errno
= errno
;
2290 p
[0] = first_char
[i
];
2291 if (sys_access (template, 0) < 0)
2297 while (++i
< sizeof (first_char
));
2300 /* Template is badly formed or else we can't generate a unique name,
2301 so return empty string */
2307 sys_open (const char * path
, int oflag
, int mode
)
2309 const char* mpath
= map_w32_filename (path
, NULL
);
2310 /* Try to open file without _O_CREAT, to be able to write to hidden
2311 and system files. Force all file handles to be
2313 int res
= _open (mpath
, (oflag
& ~_O_CREAT
) | _O_NOINHERIT
, mode
);
2316 return _open (mpath
, oflag
| _O_NOINHERIT
, mode
);
2320 sys_rename (const char * oldname
, const char * newname
)
2323 char temp
[MAX_PATH
];
2325 /* MoveFile on Windows 95 doesn't correctly change the short file name
2326 alias in a number of circumstances (it is not easy to predict when
2327 just by looking at oldname and newname, unfortunately). In these
2328 cases, renaming through a temporary name avoids the problem.
2330 A second problem on Windows 95 is that renaming through a temp name when
2331 newname is uppercase fails (the final long name ends up in
2332 lowercase, although the short alias might be uppercase) UNLESS the
2333 long temp name is not 8.3.
2335 So, on Windows 95 we always rename through a temp name, and we make sure
2336 the temp name has a long extension to ensure correct renaming. */
2338 strcpy (temp
, map_w32_filename (oldname
, NULL
));
2340 if (os_subtype
== OS_WIN95
)
2346 oldname
= map_w32_filename (oldname
, NULL
);
2347 if (o
= strrchr (oldname
, '\\'))
2350 o
= (char *) oldname
;
2352 if (p
= strrchr (temp
, '\\'))
2359 /* Force temp name to require a manufactured 8.3 alias - this
2360 seems to make the second rename work properly. */
2361 sprintf (p
, "_.%s.%u", o
, i
);
2363 result
= rename (oldname
, temp
);
2365 /* This loop must surely terminate! */
2366 while (result
< 0 && errno
== EEXIST
);
2371 /* Emulate Unix behaviour - newname is deleted if it already exists
2372 (at least if it is a file; don't do this for directories).
2374 Since we mustn't do this if we are just changing the case of the
2375 file name (we would end up deleting the file we are trying to
2376 rename!), we let rename detect if the destination file already
2377 exists - that way we avoid the possible pitfalls of trying to
2378 determine ourselves whether two names really refer to the same
2379 file, which is not always possible in the general case. (Consider
2380 all the permutations of shared or subst'd drives, etc.) */
2382 newname
= map_w32_filename (newname
, NULL
);
2383 result
= rename (temp
, newname
);
2387 && _chmod (newname
, 0666) == 0
2388 && _unlink (newname
) == 0)
2389 result
= rename (temp
, newname
);
2395 sys_rmdir (const char * path
)
2397 return _rmdir (map_w32_filename (path
, NULL
));
2401 sys_unlink (const char * path
)
2403 path
= map_w32_filename (path
, NULL
);
2405 /* On Unix, unlink works without write permission. */
2406 _chmod (path
, 0666);
2407 return _unlink (path
);
2410 static FILETIME utc_base_ft
;
2411 static long double utc_base
;
2412 static int init
= 0;
2415 convert_time (FILETIME ft
)
2421 /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */
2430 st
.wMilliseconds
= 0;
2432 SystemTimeToFileTime (&st
, &utc_base_ft
);
2433 utc_base
= (long double) utc_base_ft
.dwHighDateTime
2434 * 4096.0L * 1024.0L * 1024.0L + utc_base_ft
.dwLowDateTime
;
2438 if (CompareFileTime (&ft
, &utc_base_ft
) < 0)
2441 ret
= (long double) ft
.dwHighDateTime
2442 * 4096.0L * 1024.0L * 1024.0L + ft
.dwLowDateTime
;
2444 return (time_t) (ret
* 1e-7L);
2448 convert_from_time_t (time_t time
, FILETIME
* pft
)
2454 /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */
2463 st
.wMilliseconds
= 0;
2465 SystemTimeToFileTime (&st
, &utc_base_ft
);
2466 utc_base
= (long double) utc_base_ft
.dwHighDateTime
2467 * 4096 * 1024 * 1024 + utc_base_ft
.dwLowDateTime
;
2471 /* time in 100ns units since 1-Jan-1601 */
2472 tmp
= (long double) time
* 1e7
+ utc_base
;
2473 pft
->dwHighDateTime
= (DWORD
) (tmp
/ (4096.0 * 1024 * 1024));
2474 pft
->dwLowDateTime
= (DWORD
) (tmp
- (4096.0 * 1024 * 1024) * pft
->dwHighDateTime
);
2478 /* No reason to keep this; faking inode values either by hashing or even
2479 using the file index from GetInformationByHandle, is not perfect and
2480 so by default Emacs doesn't use the inode values on Windows.
2481 Instead, we now determine file-truename correctly (except for
2482 possible drive aliasing etc). */
2484 /* Modified version of "PJW" algorithm (see the "Dragon" compiler book). */
2486 hashval (const unsigned char * str
)
2491 h
= (h
<< 4) + *str
++;
2497 /* Return the hash value of the canonical pathname, excluding the
2498 drive/UNC header, to get a hopefully unique inode number. */
2500 generate_inode_val (const char * name
)
2502 char fullname
[ MAX_PATH
];
2506 /* Get the truly canonical filename, if it exists. (Note: this
2507 doesn't resolve aliasing due to subst commands, or recognise hard
2509 if (!w32_get_long_filename ((char *)name
, fullname
, MAX_PATH
))
2512 parse_root (fullname
, &p
);
2513 /* Normal W32 filesystems are still case insensitive. */
2520 /* MSVC stat function can't cope with UNC names and has other bugs, so
2521 replace it with our own. This also allows us to calculate consistent
2522 inode values without hacks in the main Emacs code. */
2524 stat (const char * path
, struct stat
* buf
)
2527 WIN32_FIND_DATA wfd
;
2532 int rootdir
= FALSE
;
2534 if (path
== NULL
|| buf
== NULL
)
2540 name
= (char *) map_w32_filename (path
, &path
);
2541 /* Must be valid filename, no wild cards or other invalid
2542 characters. We use _mbspbrk to support multibyte strings that
2543 might look to strpbrk as if they included literal *, ?, and other
2544 characters mentioned below that are disallowed by Windows
2546 if (_mbspbrk (name
, "*?|<>\""))
2552 /* If name is "c:/.." or "/.." then stat "c:/" or "/". */
2553 r
= IS_DEVICE_SEP (name
[1]) ? &name
[2] : name
;
2554 if (IS_DIRECTORY_SEP (r
[0]) && r
[1] == '.' && r
[2] == '.' && r
[3] == '\0')
2559 /* Remove trailing directory separator, unless name is the root
2560 directory of a drive or UNC volume in which case ensure there
2561 is a trailing separator. */
2562 len
= strlen (name
);
2563 rootdir
= (path
>= name
+ len
- 1
2564 && (IS_DIRECTORY_SEP (*path
) || *path
== 0));
2565 name
= strcpy (alloca (len
+ 2), name
);
2567 if (is_unc_volume (name
))
2569 DWORD attrs
= unc_volume_file_attributes (name
);
2574 memset (&wfd
, 0, sizeof (wfd
));
2575 wfd
.dwFileAttributes
= attrs
;
2576 wfd
.ftCreationTime
= utc_base_ft
;
2577 wfd
.ftLastAccessTime
= utc_base_ft
;
2578 wfd
.ftLastWriteTime
= utc_base_ft
;
2579 strcpy (wfd
.cFileName
, name
);
2583 if (!IS_DIRECTORY_SEP (name
[len
-1]))
2584 strcat (name
, "\\");
2585 if (GetDriveType (name
) < 2)
2590 memset (&wfd
, 0, sizeof (wfd
));
2591 wfd
.dwFileAttributes
= FILE_ATTRIBUTE_DIRECTORY
;
2592 wfd
.ftCreationTime
= utc_base_ft
;
2593 wfd
.ftLastAccessTime
= utc_base_ft
;
2594 wfd
.ftLastWriteTime
= utc_base_ft
;
2595 strcpy (wfd
.cFileName
, name
);
2599 if (IS_DIRECTORY_SEP (name
[len
-1]))
2602 /* (This is hacky, but helps when doing file completions on
2603 network drives.) Optimize by using information available from
2604 active readdir if possible. */
2605 len
= strlen (dir_pathname
);
2606 if (IS_DIRECTORY_SEP (dir_pathname
[len
-1]))
2608 if (dir_find_handle
!= INVALID_HANDLE_VALUE
2609 && strnicmp (name
, dir_pathname
, len
) == 0
2610 && IS_DIRECTORY_SEP (name
[len
])
2611 && stricmp (name
+ len
+ 1, dir_static
.d_name
) == 0)
2613 /* This was the last entry returned by readdir. */
2614 wfd
= dir_find_data
;
2618 logon_network_drive (name
);
2620 fh
= FindFirstFile (name
, &wfd
);
2621 if (fh
== INVALID_HANDLE_VALUE
)
2630 if (!NILP (Vw32_get_true_file_attributes
)
2631 /* No access rights required to get info. */
2632 && (fh
= CreateFile (name
, 0, 0, NULL
, OPEN_EXISTING
,
2633 FILE_FLAG_BACKUP_SEMANTICS
, NULL
))
2634 != INVALID_HANDLE_VALUE
)
2636 /* This is more accurate in terms of gettting the correct number
2637 of links, but is quite slow (it is noticeable when Emacs is
2638 making a list of file name completions). */
2639 BY_HANDLE_FILE_INFORMATION info
;
2641 if (GetFileInformationByHandle (fh
, &info
))
2643 buf
->st_nlink
= info
.nNumberOfLinks
;
2644 /* Might as well use file index to fake inode values, but this
2645 is not guaranteed to be unique unless we keep a handle open
2646 all the time (even then there are situations where it is
2647 not unique). Reputedly, there are at most 48 bits of info
2648 (on NTFS, presumably less on FAT). */
2649 fake_inode
= info
.nFileIndexLow
^ info
.nFileIndexHigh
;
2657 if (wfd
.dwFileAttributes
& FILE_ATTRIBUTE_DIRECTORY
)
2659 buf
->st_mode
= _S_IFDIR
;
2663 switch (GetFileType (fh
))
2665 case FILE_TYPE_DISK
:
2666 buf
->st_mode
= _S_IFREG
;
2668 case FILE_TYPE_PIPE
:
2669 buf
->st_mode
= _S_IFIFO
;
2671 case FILE_TYPE_CHAR
:
2672 case FILE_TYPE_UNKNOWN
:
2674 buf
->st_mode
= _S_IFCHR
;
2681 /* Don't bother to make this information more accurate. */
2682 buf
->st_mode
= (wfd
.dwFileAttributes
& FILE_ATTRIBUTE_DIRECTORY
) ?
2683 _S_IFDIR
: _S_IFREG
;
2689 /* Not sure if there is any point in this. */
2690 if (!NILP (Vw32_generate_fake_inodes
))
2691 fake_inode
= generate_inode_val (name
);
2692 else if (fake_inode
== 0)
2694 /* For want of something better, try to make everything unique. */
2695 static DWORD gen_num
= 0;
2696 fake_inode
= ++gen_num
;
2700 /* MSVC defines _ino_t to be short; other libc's might not. */
2701 if (sizeof (buf
->st_ino
) == 2)
2702 buf
->st_ino
= fake_inode
^ (fake_inode
>> 16);
2704 buf
->st_ino
= fake_inode
;
2706 /* consider files to belong to current user */
2707 buf
->st_uid
= the_passwd
.pw_uid
;
2708 buf
->st_gid
= the_passwd
.pw_gid
;
2710 /* volume_info is set indirectly by map_w32_filename */
2711 buf
->st_dev
= volume_info
.serialnum
;
2712 buf
->st_rdev
= volume_info
.serialnum
;
2715 buf
->st_size
= wfd
.nFileSizeLow
;
2717 /* Convert timestamps to Unix format. */
2718 buf
->st_mtime
= convert_time (wfd
.ftLastWriteTime
);
2719 buf
->st_atime
= convert_time (wfd
.ftLastAccessTime
);
2720 if (buf
->st_atime
== 0) buf
->st_atime
= buf
->st_mtime
;
2721 buf
->st_ctime
= convert_time (wfd
.ftCreationTime
);
2722 if (buf
->st_ctime
== 0) buf
->st_ctime
= buf
->st_mtime
;
2724 /* determine rwx permissions */
2725 if (wfd
.dwFileAttributes
& FILE_ATTRIBUTE_READONLY
)
2726 permission
= _S_IREAD
;
2728 permission
= _S_IREAD
| _S_IWRITE
;
2730 if (wfd
.dwFileAttributes
& FILE_ATTRIBUTE_DIRECTORY
)
2731 permission
|= _S_IEXEC
;
2732 else if (is_exec (name
))
2733 permission
|= _S_IEXEC
;
2735 buf
->st_mode
|= permission
| (permission
>> 3) | (permission
>> 6);
2740 /* Provide fstat and utime as well as stat for consistent handling of
2743 fstat (int desc
, struct stat
* buf
)
2745 HANDLE fh
= (HANDLE
) _get_osfhandle (desc
);
2746 BY_HANDLE_FILE_INFORMATION info
;
2750 switch (GetFileType (fh
) & ~FILE_TYPE_REMOTE
)
2752 case FILE_TYPE_DISK
:
2753 buf
->st_mode
= _S_IFREG
;
2754 if (!GetFileInformationByHandle (fh
, &info
))
2760 case FILE_TYPE_PIPE
:
2761 buf
->st_mode
= _S_IFIFO
;
2763 case FILE_TYPE_CHAR
:
2764 case FILE_TYPE_UNKNOWN
:
2766 buf
->st_mode
= _S_IFCHR
;
2768 memset (&info
, 0, sizeof (info
));
2769 info
.dwFileAttributes
= 0;
2770 info
.ftCreationTime
= utc_base_ft
;
2771 info
.ftLastAccessTime
= utc_base_ft
;
2772 info
.ftLastWriteTime
= utc_base_ft
;
2775 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_DIRECTORY
)
2776 buf
->st_mode
= _S_IFDIR
;
2778 buf
->st_nlink
= info
.nNumberOfLinks
;
2779 /* Might as well use file index to fake inode values, but this
2780 is not guaranteed to be unique unless we keep a handle open
2781 all the time (even then there are situations where it is
2782 not unique). Reputedly, there are at most 48 bits of info
2783 (on NTFS, presumably less on FAT). */
2784 fake_inode
= info
.nFileIndexLow
^ info
.nFileIndexHigh
;
2786 /* MSVC defines _ino_t to be short; other libc's might not. */
2787 if (sizeof (buf
->st_ino
) == 2)
2788 buf
->st_ino
= fake_inode
^ (fake_inode
>> 16);
2790 buf
->st_ino
= fake_inode
;
2792 /* consider files to belong to current user */
2793 buf
->st_uid
= the_passwd
.pw_uid
;
2794 buf
->st_gid
= the_passwd
.pw_gid
;
2796 buf
->st_dev
= info
.dwVolumeSerialNumber
;
2797 buf
->st_rdev
= info
.dwVolumeSerialNumber
;
2799 buf
->st_size
= info
.nFileSizeLow
;
2801 /* Convert timestamps to Unix format. */
2802 buf
->st_mtime
= convert_time (info
.ftLastWriteTime
);
2803 buf
->st_atime
= convert_time (info
.ftLastAccessTime
);
2804 if (buf
->st_atime
== 0) buf
->st_atime
= buf
->st_mtime
;
2805 buf
->st_ctime
= convert_time (info
.ftCreationTime
);
2806 if (buf
->st_ctime
== 0) buf
->st_ctime
= buf
->st_mtime
;
2808 /* determine rwx permissions */
2809 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_READONLY
)
2810 permission
= _S_IREAD
;
2812 permission
= _S_IREAD
| _S_IWRITE
;
2814 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_DIRECTORY
)
2815 permission
|= _S_IEXEC
;
2818 #if 0 /* no way of knowing the filename */
2819 char * p
= strrchr (name
, '.');
2821 (stricmp (p
, ".exe") == 0 ||
2822 stricmp (p
, ".com") == 0 ||
2823 stricmp (p
, ".bat") == 0 ||
2824 stricmp (p
, ".cmd") == 0))
2825 permission
|= _S_IEXEC
;
2829 buf
->st_mode
|= permission
| (permission
>> 3) | (permission
>> 6);
2835 utime (const char *name
, struct utimbuf
*times
)
2837 struct utimbuf deftime
;
2844 deftime
.modtime
= deftime
.actime
= time (NULL
);
2848 /* Need write access to set times. */
2849 fh
= CreateFile (name
, GENERIC_WRITE
, FILE_SHARE_READ
| FILE_SHARE_WRITE
,
2850 0, OPEN_EXISTING
, 0, NULL
);
2853 convert_from_time_t (times
->actime
, &atime
);
2854 convert_from_time_t (times
->modtime
, &mtime
);
2855 if (!SetFileTime (fh
, NULL
, &atime
, &mtime
))
2873 /* Wrappers for winsock functions to map between our file descriptors
2874 and winsock's handles; also set h_errno for convenience.
2876 To allow Emacs to run on systems which don't have winsock support
2877 installed, we dynamically link to winsock on startup if present, and
2878 otherwise provide the minimum necessary functionality
2879 (eg. gethostname). */
2881 /* function pointers for relevant socket functions */
2882 int (PASCAL
*pfn_WSAStartup
) (WORD wVersionRequired
, LPWSADATA lpWSAData
);
2883 void (PASCAL
*pfn_WSASetLastError
) (int iError
);
2884 int (PASCAL
*pfn_WSAGetLastError
) (void);
2885 int (PASCAL
*pfn_WSAEventSelect
) (SOCKET s
, HANDLE hEventObject
, long lNetworkEvents
);
2886 HANDLE (PASCAL
*pfn_WSACreateEvent
) (void);
2887 int (PASCAL
*pfn_WSACloseEvent
) (HANDLE hEvent
);
2888 int (PASCAL
*pfn_socket
) (int af
, int type
, int protocol
);
2889 int (PASCAL
*pfn_bind
) (SOCKET s
, const struct sockaddr
*addr
, int namelen
);
2890 int (PASCAL
*pfn_connect
) (SOCKET s
, const struct sockaddr
*addr
, int namelen
);
2891 int (PASCAL
*pfn_ioctlsocket
) (SOCKET s
, long cmd
, u_long
*argp
);
2892 int (PASCAL
*pfn_recv
) (SOCKET s
, char * buf
, int len
, int flags
);
2893 int (PASCAL
*pfn_send
) (SOCKET s
, const char * buf
, int len
, int flags
);
2894 int (PASCAL
*pfn_closesocket
) (SOCKET s
);
2895 int (PASCAL
*pfn_shutdown
) (SOCKET s
, int how
);
2896 int (PASCAL
*pfn_WSACleanup
) (void);
2898 u_short (PASCAL
*pfn_htons
) (u_short hostshort
);
2899 u_short (PASCAL
*pfn_ntohs
) (u_short netshort
);
2900 unsigned long (PASCAL
*pfn_inet_addr
) (const char * cp
);
2901 int (PASCAL
*pfn_gethostname
) (char * name
, int namelen
);
2902 struct hostent
* (PASCAL
*pfn_gethostbyname
) (const char * name
);
2903 struct servent
* (PASCAL
*pfn_getservbyname
) (const char * name
, const char * proto
);
2904 int (PASCAL
*pfn_getpeername
) (SOCKET s
, struct sockaddr
*addr
, int * namelen
);
2905 int (PASCAL
*pfn_setsockopt
) (SOCKET s
, int level
, int optname
,
2906 const char * optval
, int optlen
);
2907 int (PASCAL
*pfn_listen
) (SOCKET s
, int backlog
);
2908 int (PASCAL
*pfn_getsockname
) (SOCKET s
, struct sockaddr
* name
,
2910 SOCKET (PASCAL
*pfn_accept
) (SOCKET s
, struct sockaddr
* addr
, int * addrlen
);
2911 int (PASCAL
*pfn_recvfrom
) (SOCKET s
, char * buf
, int len
, int flags
,
2912 struct sockaddr
* from
, int * fromlen
);
2913 int (PASCAL
*pfn_sendto
) (SOCKET s
, const char * buf
, int len
, int flags
,
2914 const struct sockaddr
* to
, int tolen
);
2916 /* SetHandleInformation is only needed to make sockets non-inheritable. */
2917 BOOL (WINAPI
*pfn_SetHandleInformation
) (HANDLE object
, DWORD mask
, DWORD flags
);
2918 #ifndef HANDLE_FLAG_INHERIT
2919 #define HANDLE_FLAG_INHERIT 1
2923 static int winsock_inuse
;
2928 if (winsock_lib
!= NULL
&& winsock_inuse
== 0)
2930 /* Not sure what would cause WSAENETDOWN, or even if it can happen
2931 after WSAStartup returns successfully, but it seems reasonable
2932 to allow unloading winsock anyway in that case. */
2933 if (pfn_WSACleanup () == 0 ||
2934 pfn_WSAGetLastError () == WSAENETDOWN
)
2936 if (FreeLibrary (winsock_lib
))
2945 init_winsock (int load_now
)
2947 WSADATA winsockData
;
2949 if (winsock_lib
!= NULL
)
2952 pfn_SetHandleInformation
= NULL
;
2953 pfn_SetHandleInformation
2954 = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"),
2955 "SetHandleInformation");
2957 winsock_lib
= LoadLibrary ("Ws2_32.dll");
2959 if (winsock_lib
!= NULL
)
2961 /* dynamically link to socket functions */
2963 #define LOAD_PROC(fn) \
2964 if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \
2967 LOAD_PROC( WSAStartup
);
2968 LOAD_PROC( WSASetLastError
);
2969 LOAD_PROC( WSAGetLastError
);
2970 LOAD_PROC( WSAEventSelect
);
2971 LOAD_PROC( WSACreateEvent
);
2972 LOAD_PROC( WSACloseEvent
);
2973 LOAD_PROC( socket
);
2975 LOAD_PROC( connect
);
2976 LOAD_PROC( ioctlsocket
);
2979 LOAD_PROC( closesocket
);
2980 LOAD_PROC( shutdown
);
2983 LOAD_PROC( inet_addr
);
2984 LOAD_PROC( gethostname
);
2985 LOAD_PROC( gethostbyname
);
2986 LOAD_PROC( getservbyname
);
2987 LOAD_PROC( getpeername
);
2988 LOAD_PROC( WSACleanup
);
2989 LOAD_PROC( setsockopt
);
2990 LOAD_PROC( listen
);
2991 LOAD_PROC( getsockname
);
2992 LOAD_PROC( accept
);
2993 LOAD_PROC( recvfrom
);
2994 LOAD_PROC( sendto
);
2997 /* specify version 1.1 of winsock */
2998 if (pfn_WSAStartup (0x101, &winsockData
) == 0)
3000 if (winsockData
.wVersion
!= 0x101)
3005 /* Report that winsock exists and is usable, but leave
3006 socket functions disabled. I am assuming that calling
3007 WSAStartup does not require any network interaction,
3008 and in particular does not cause or require a dial-up
3009 connection to be established. */
3012 FreeLibrary (winsock_lib
);
3020 FreeLibrary (winsock_lib
);
3030 /* function to set h_errno for compatability; map winsock error codes to
3031 normal system codes where they overlap (non-overlapping definitions
3032 are already in <sys/socket.h> */
3036 if (winsock_lib
== NULL
)
3039 h_errno
= pfn_WSAGetLastError ();
3043 case WSAEACCES
: h_errno
= EACCES
; break;
3044 case WSAEBADF
: h_errno
= EBADF
; break;
3045 case WSAEFAULT
: h_errno
= EFAULT
; break;
3046 case WSAEINTR
: h_errno
= EINTR
; break;
3047 case WSAEINVAL
: h_errno
= EINVAL
; break;
3048 case WSAEMFILE
: h_errno
= EMFILE
; break;
3049 case WSAENAMETOOLONG
: h_errno
= ENAMETOOLONG
; break;
3050 case WSAENOTEMPTY
: h_errno
= ENOTEMPTY
; break;
3058 if (h_errno
== 0 && winsock_lib
!= NULL
)
3059 pfn_WSASetLastError (0);
3062 /* Extend strerror to handle the winsock-specific error codes. */
3066 } _wsa_errlist
[] = {
3067 WSAEINTR
, "Interrupted function call",
3068 WSAEBADF
, "Bad file descriptor",
3069 WSAEACCES
, "Permission denied",
3070 WSAEFAULT
, "Bad address",
3071 WSAEINVAL
, "Invalid argument",
3072 WSAEMFILE
, "Too many open files",
3074 WSAEWOULDBLOCK
, "Resource temporarily unavailable",
3075 WSAEINPROGRESS
, "Operation now in progress",
3076 WSAEALREADY
, "Operation already in progress",
3077 WSAENOTSOCK
, "Socket operation on non-socket",
3078 WSAEDESTADDRREQ
, "Destination address required",
3079 WSAEMSGSIZE
, "Message too long",
3080 WSAEPROTOTYPE
, "Protocol wrong type for socket",
3081 WSAENOPROTOOPT
, "Bad protocol option",
3082 WSAEPROTONOSUPPORT
, "Protocol not supported",
3083 WSAESOCKTNOSUPPORT
, "Socket type not supported",
3084 WSAEOPNOTSUPP
, "Operation not supported",
3085 WSAEPFNOSUPPORT
, "Protocol family not supported",
3086 WSAEAFNOSUPPORT
, "Address family not supported by protocol family",
3087 WSAEADDRINUSE
, "Address already in use",
3088 WSAEADDRNOTAVAIL
, "Cannot assign requested address",
3089 WSAENETDOWN
, "Network is down",
3090 WSAENETUNREACH
, "Network is unreachable",
3091 WSAENETRESET
, "Network dropped connection on reset",
3092 WSAECONNABORTED
, "Software caused connection abort",
3093 WSAECONNRESET
, "Connection reset by peer",
3094 WSAENOBUFS
, "No buffer space available",
3095 WSAEISCONN
, "Socket is already connected",
3096 WSAENOTCONN
, "Socket is not connected",
3097 WSAESHUTDOWN
, "Cannot send after socket shutdown",
3098 WSAETOOMANYREFS
, "Too many references", /* not sure */
3099 WSAETIMEDOUT
, "Connection timed out",
3100 WSAECONNREFUSED
, "Connection refused",
3101 WSAELOOP
, "Network loop", /* not sure */
3102 WSAENAMETOOLONG
, "Name is too long",
3103 WSAEHOSTDOWN
, "Host is down",
3104 WSAEHOSTUNREACH
, "No route to host",
3105 WSAENOTEMPTY
, "Buffer not empty", /* not sure */
3106 WSAEPROCLIM
, "Too many processes",
3107 WSAEUSERS
, "Too many users", /* not sure */
3108 WSAEDQUOT
, "Double quote in host name", /* really not sure */
3109 WSAESTALE
, "Data is stale", /* not sure */
3110 WSAEREMOTE
, "Remote error", /* not sure */
3112 WSASYSNOTREADY
, "Network subsystem is unavailable",
3113 WSAVERNOTSUPPORTED
, "WINSOCK.DLL version out of range",
3114 WSANOTINITIALISED
, "Winsock not initialized successfully",
3115 WSAEDISCON
, "Graceful shutdown in progress",
3117 WSAENOMORE
, "No more operations allowed", /* not sure */
3118 WSAECANCELLED
, "Operation cancelled", /* not sure */
3119 WSAEINVALIDPROCTABLE
, "Invalid procedure table from service provider",
3120 WSAEINVALIDPROVIDER
, "Invalid service provider version number",
3121 WSAEPROVIDERFAILEDINIT
, "Unable to initialize a service provider",
3122 WSASYSCALLFAILURE
, "System call failure",
3123 WSASERVICE_NOT_FOUND
, "Service not found", /* not sure */
3124 WSATYPE_NOT_FOUND
, "Class type not found",
3125 WSA_E_NO_MORE
, "No more resources available", /* really not sure */
3126 WSA_E_CANCELLED
, "Operation already cancelled", /* really not sure */
3127 WSAEREFUSED
, "Operation refused", /* not sure */
3130 WSAHOST_NOT_FOUND
, "Host not found",
3131 WSATRY_AGAIN
, "Authoritative host not found during name lookup",
3132 WSANO_RECOVERY
, "Non-recoverable error during name lookup",
3133 WSANO_DATA
, "Valid name, no data record of requested type",
3139 sys_strerror(int error_no
)
3142 static char unknown_msg
[40];
3144 if (error_no
>= 0 && error_no
< sys_nerr
)
3145 return sys_errlist
[error_no
];
3147 for (i
= 0; _wsa_errlist
[i
].errnum
>= 0; i
++)
3148 if (_wsa_errlist
[i
].errnum
== error_no
)
3149 return _wsa_errlist
[i
].msg
;
3151 sprintf(unknown_msg
, "Unidentified error: %d", error_no
);
3155 /* [andrewi 3-May-96] I've had conflicting results using both methods,
3156 but I believe the method of keeping the socket handle separate (and
3157 insuring it is not inheritable) is the correct one. */
3159 //#define SOCK_REPLACE_HANDLE
3161 #ifdef SOCK_REPLACE_HANDLE
3162 #define SOCK_HANDLE(fd) ((SOCKET) _get_osfhandle (fd))
3164 #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd)
3167 int socket_to_fd (SOCKET s
);
3170 sys_socket(int af
, int type
, int protocol
)
3174 if (winsock_lib
== NULL
)
3177 return INVALID_SOCKET
;
3182 /* call the real socket function */
3183 s
= pfn_socket (af
, type
, protocol
);
3185 if (s
!= INVALID_SOCKET
)
3186 return socket_to_fd (s
);
3192 /* Convert a SOCKET to a file descriptor. */
3194 socket_to_fd (SOCKET s
)
3199 /* Although under NT 3.5 _open_osfhandle will accept a socket
3200 handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT,
3201 that does not work under NT 3.1. However, we can get the same
3202 effect by using a backdoor function to replace an existing
3203 descriptor handle with the one we want. */
3205 /* allocate a file descriptor (with appropriate flags) */
3206 fd
= _open ("NUL:", _O_RDWR
);
3209 #ifdef SOCK_REPLACE_HANDLE
3210 /* now replace handle to NUL with our socket handle */
3211 CloseHandle ((HANDLE
) _get_osfhandle (fd
));
3213 _set_osfhnd (fd
, s
);
3214 /* setmode (fd, _O_BINARY); */
3216 /* Make a non-inheritable copy of the socket handle. Note
3217 that it is possible that sockets aren't actually kernel
3218 handles, which appears to be the case on Windows 9x when
3219 the MS Proxy winsock client is installed. */
3221 /* Apparently there is a bug in NT 3.51 with some service
3222 packs, which prevents using DuplicateHandle to make a
3223 socket handle non-inheritable (causes WSACleanup to
3224 hang). The work-around is to use SetHandleInformation
3225 instead if it is available and implemented. */
3226 if (pfn_SetHandleInformation
)
3228 pfn_SetHandleInformation ((HANDLE
) s
, HANDLE_FLAG_INHERIT
, 0);
3232 HANDLE parent
= GetCurrentProcess ();
3233 HANDLE new_s
= INVALID_HANDLE_VALUE
;
3235 if (DuplicateHandle (parent
,
3241 DUPLICATE_SAME_ACCESS
))
3243 /* It is possible that DuplicateHandle succeeds even
3244 though the socket wasn't really a kernel handle,
3245 because a real handle has the same value. So
3246 test whether the new handle really is a socket. */
3247 long nonblocking
= 0;
3248 if (pfn_ioctlsocket ((SOCKET
) new_s
, FIONBIO
, &nonblocking
) == 0)
3250 pfn_closesocket (s
);
3255 CloseHandle (new_s
);
3260 fd_info
[fd
].hnd
= (HANDLE
) s
;
3263 /* set our own internal flags */
3264 fd_info
[fd
].flags
= FILE_SOCKET
| FILE_BINARY
| FILE_READ
| FILE_WRITE
;
3270 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
3272 /* attach child_process to fd_info */
3273 if (fd_info
[ fd
].cp
!= NULL
)
3275 DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd
));
3279 fd_info
[ fd
].cp
= cp
;
3282 winsock_inuse
++; /* count open sockets */
3289 pfn_closesocket (s
);
3296 sys_bind (int s
, const struct sockaddr
* addr
, int namelen
)
3298 if (winsock_lib
== NULL
)
3301 return SOCKET_ERROR
;
3305 if (fd_info
[s
].flags
& FILE_SOCKET
)
3307 int rc
= pfn_bind (SOCK_HANDLE (s
), addr
, namelen
);
3308 if (rc
== SOCKET_ERROR
)
3313 return SOCKET_ERROR
;
3318 sys_connect (int s
, const struct sockaddr
* name
, int namelen
)
3320 if (winsock_lib
== NULL
)
3323 return SOCKET_ERROR
;
3327 if (fd_info
[s
].flags
& FILE_SOCKET
)
3329 int rc
= pfn_connect (SOCK_HANDLE (s
), name
, namelen
);
3330 if (rc
== SOCKET_ERROR
)
3335 return SOCKET_ERROR
;
3339 sys_htons (u_short hostshort
)
3341 return (winsock_lib
!= NULL
) ?
3342 pfn_htons (hostshort
) : hostshort
;
3346 sys_ntohs (u_short netshort
)
3348 return (winsock_lib
!= NULL
) ?
3349 pfn_ntohs (netshort
) : netshort
;
3353 sys_inet_addr (const char * cp
)
3355 return (winsock_lib
!= NULL
) ?
3356 pfn_inet_addr (cp
) : INADDR_NONE
;
3360 sys_gethostname (char * name
, int namelen
)
3362 if (winsock_lib
!= NULL
)
3363 return pfn_gethostname (name
, namelen
);
3365 if (namelen
> MAX_COMPUTERNAME_LENGTH
)
3366 return !GetComputerName (name
, (DWORD
*)&namelen
);
3369 return SOCKET_ERROR
;
3373 sys_gethostbyname(const char * name
)
3375 struct hostent
* host
;
3377 if (winsock_lib
== NULL
)
3384 host
= pfn_gethostbyname (name
);
3391 sys_getservbyname(const char * name
, const char * proto
)
3393 struct servent
* serv
;
3395 if (winsock_lib
== NULL
)
3402 serv
= pfn_getservbyname (name
, proto
);
3409 sys_getpeername (int s
, struct sockaddr
*addr
, int * namelen
)
3411 if (winsock_lib
== NULL
)
3414 return SOCKET_ERROR
;
3418 if (fd_info
[s
].flags
& FILE_SOCKET
)
3420 int rc
= pfn_getpeername (SOCK_HANDLE (s
), addr
, namelen
);
3421 if (rc
== SOCKET_ERROR
)
3426 return SOCKET_ERROR
;
3431 sys_shutdown (int s
, int how
)
3433 if (winsock_lib
== NULL
)
3436 return SOCKET_ERROR
;
3440 if (fd_info
[s
].flags
& FILE_SOCKET
)
3442 int rc
= pfn_shutdown (SOCK_HANDLE (s
), how
);
3443 if (rc
== SOCKET_ERROR
)
3448 return SOCKET_ERROR
;
3452 sys_setsockopt (int s
, int level
, int optname
, const void * optval
, int optlen
)
3454 if (winsock_lib
== NULL
)
3457 return SOCKET_ERROR
;
3461 if (fd_info
[s
].flags
& FILE_SOCKET
)
3463 int rc
= pfn_setsockopt (SOCK_HANDLE (s
), level
, optname
,
3464 (const char *)optval
, optlen
);
3465 if (rc
== SOCKET_ERROR
)
3470 return SOCKET_ERROR
;
3474 sys_listen (int s
, int backlog
)
3476 if (winsock_lib
== NULL
)
3479 return SOCKET_ERROR
;
3483 if (fd_info
[s
].flags
& FILE_SOCKET
)
3485 int rc
= pfn_listen (SOCK_HANDLE (s
), backlog
);
3486 if (rc
== SOCKET_ERROR
)
3489 fd_info
[s
].flags
|= FILE_LISTEN
;
3493 return SOCKET_ERROR
;
3497 sys_getsockname (int s
, struct sockaddr
* name
, int * namelen
)
3499 if (winsock_lib
== NULL
)
3502 return SOCKET_ERROR
;
3506 if (fd_info
[s
].flags
& FILE_SOCKET
)
3508 int rc
= pfn_getsockname (SOCK_HANDLE (s
), name
, namelen
);
3509 if (rc
== SOCKET_ERROR
)
3514 return SOCKET_ERROR
;
3518 sys_accept (int s
, struct sockaddr
* addr
, int * addrlen
)
3520 if (winsock_lib
== NULL
)
3527 if (fd_info
[s
].flags
& FILE_LISTEN
)
3529 SOCKET t
= pfn_accept (SOCK_HANDLE (s
), addr
, addrlen
);
3531 if (t
== INVALID_SOCKET
)
3534 fd
= socket_to_fd (t
);
3536 fd_info
[s
].cp
->status
= STATUS_READ_ACKNOWLEDGED
;
3537 ResetEvent (fd_info
[s
].cp
->char_avail
);
3545 sys_recvfrom (int s
, char * buf
, int len
, int flags
,
3546 struct sockaddr
* from
, int * fromlen
)
3548 if (winsock_lib
== NULL
)
3551 return SOCKET_ERROR
;
3555 if (fd_info
[s
].flags
& FILE_SOCKET
)
3557 int rc
= pfn_recvfrom (SOCK_HANDLE (s
), buf
, len
, flags
, from
, fromlen
);
3558 if (rc
== SOCKET_ERROR
)
3563 return SOCKET_ERROR
;
3567 sys_sendto (int s
, const char * buf
, int len
, int flags
,
3568 const struct sockaddr
* to
, int tolen
)
3570 if (winsock_lib
== NULL
)
3573 return SOCKET_ERROR
;
3577 if (fd_info
[s
].flags
& FILE_SOCKET
)
3579 int rc
= pfn_sendto (SOCK_HANDLE (s
), buf
, len
, flags
, to
, tolen
);
3580 if (rc
== SOCKET_ERROR
)
3585 return SOCKET_ERROR
;
3588 /* Windows does not have an fcntl function. Provide an implementation
3589 solely for making sockets non-blocking. */
3591 fcntl (int s
, int cmd
, int options
)
3593 if (winsock_lib
== NULL
)
3600 if (fd_info
[s
].flags
& FILE_SOCKET
)
3602 if (cmd
== F_SETFL
&& options
== O_NDELAY
)
3604 unsigned long nblock
= 1;
3605 int rc
= pfn_ioctlsocket (SOCK_HANDLE (s
), FIONBIO
, &nblock
);
3606 if (rc
== SOCKET_ERROR
)
3608 /* Keep track of the fact that we set this to non-blocking. */
3609 fd_info
[s
].flags
|= FILE_NDELAY
;
3615 return SOCKET_ERROR
;
3619 return SOCKET_ERROR
;
3622 #endif /* HAVE_SOCKETS */
3625 /* Shadow main io functions: we need to handle pipes and sockets more
3626 intelligently, and implement non-blocking mode as well. */
3639 if (fd
< MAXDESC
&& fd_info
[fd
].cp
)
3641 child_process
* cp
= fd_info
[fd
].cp
;
3643 fd_info
[fd
].cp
= NULL
;
3645 if (CHILD_ACTIVE (cp
))
3647 /* if last descriptor to active child_process then cleanup */
3649 for (i
= 0; i
< MAXDESC
; i
++)
3653 if (fd_info
[i
].cp
== cp
)
3659 if (fd_info
[fd
].flags
& FILE_SOCKET
)
3661 #ifndef SOCK_REPLACE_HANDLE
3662 if (winsock_lib
== NULL
) abort ();
3664 pfn_shutdown (SOCK_HANDLE (fd
), 2);
3665 rc
= pfn_closesocket (SOCK_HANDLE (fd
));
3667 winsock_inuse
--; /* count open sockets */
3675 /* Note that sockets do not need special treatment here (at least on
3676 NT and Windows 95 using the standard tcp/ip stacks) - it appears that
3677 closesocket is equivalent to CloseHandle, which is to be expected
3678 because socket handles are fully fledged kernel handles. */
3681 if (rc
== 0 && fd
< MAXDESC
)
3682 fd_info
[fd
].flags
= 0;
3693 if (new_fd
>= 0 && new_fd
< MAXDESC
)
3695 /* duplicate our internal info as well */
3696 fd_info
[new_fd
] = fd_info
[fd
];
3703 sys_dup2 (int src
, int dst
)
3707 if (dst
< 0 || dst
>= MAXDESC
)
3713 /* make sure we close the destination first if it's a pipe or socket */
3714 if (src
!= dst
&& fd_info
[dst
].flags
!= 0)
3717 rc
= _dup2 (src
, dst
);
3720 /* duplicate our internal info as well */
3721 fd_info
[dst
] = fd_info
[src
];
3726 /* Unix pipe() has only one arg */
3728 sys_pipe (int * phandles
)
3733 /* make pipe handles non-inheritable; when we spawn a child, we
3734 replace the relevant handle with an inheritable one. Also put
3735 pipes into binary mode; we will do text mode translation ourselves
3737 rc
= _pipe (phandles
, 0, _O_NOINHERIT
| _O_BINARY
);
3741 /* Protect against overflow, since Windows can open more handles than
3742 our fd_info array has room for. */
3743 if (phandles
[0] >= MAXDESC
|| phandles
[1] >= MAXDESC
)
3745 _close (phandles
[0]);
3746 _close (phandles
[1]);
3751 flags
= FILE_PIPE
| FILE_READ
| FILE_BINARY
;
3752 fd_info
[phandles
[0]].flags
= flags
;
3754 flags
= FILE_PIPE
| FILE_WRITE
| FILE_BINARY
;
3755 fd_info
[phandles
[1]].flags
= flags
;
3763 extern int w32_pipe_read_delay
;
3765 /* Function to do blocking read of one byte, needed to implement
3766 select. It is only allowed on sockets and pipes. */
3768 _sys_read_ahead (int fd
)
3773 if (fd
< 0 || fd
>= MAXDESC
)
3774 return STATUS_READ_ERROR
;
3776 cp
= fd_info
[fd
].cp
;
3778 if (cp
== NULL
|| cp
->fd
!= fd
|| cp
->status
!= STATUS_READ_READY
)
3779 return STATUS_READ_ERROR
;
3781 if ((fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SOCKET
)) == 0
3782 || (fd_info
[fd
].flags
& FILE_READ
) == 0)
3784 DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe or socket!\n", fd
));
3788 cp
->status
= STATUS_READ_IN_PROGRESS
;
3790 if (fd_info
[fd
].flags
& FILE_PIPE
)
3792 rc
= _read (fd
, &cp
->chr
, sizeof (char));
3794 /* Give subprocess time to buffer some more output for us before
3795 reporting that input is available; we need this because Windows 95
3796 connects DOS programs to pipes by making the pipe appear to be
3797 the normal console stdout - as a result most DOS programs will
3798 write to stdout without buffering, ie. one character at a
3799 time. Even some W32 programs do this - "dir" in a command
3800 shell on NT is very slow if we don't do this. */
3803 int wait
= w32_pipe_read_delay
;
3809 /* Yield remainder of our time slice, effectively giving a
3810 temporary priority boost to the child process. */
3815 else if (fd_info
[fd
].flags
& FILE_SOCKET
)
3817 unsigned long nblock
= 0;
3818 /* We always want this to block, so temporarily disable NDELAY. */
3819 if (fd_info
[fd
].flags
& FILE_NDELAY
)
3820 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
3822 rc
= pfn_recv (SOCK_HANDLE (fd
), &cp
->chr
, sizeof (char), 0);
3824 if (fd_info
[fd
].flags
& FILE_NDELAY
)
3827 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
3832 if (rc
== sizeof (char))
3833 cp
->status
= STATUS_READ_SUCCEEDED
;
3835 cp
->status
= STATUS_READ_FAILED
;
3841 _sys_wait_accept (int fd
)
3847 if (fd
< 0 || fd
>= MAXDESC
)
3848 return STATUS_READ_ERROR
;
3850 cp
= fd_info
[fd
].cp
;
3852 if (cp
== NULL
|| cp
->fd
!= fd
|| cp
->status
!= STATUS_READ_READY
)
3853 return STATUS_READ_ERROR
;
3855 cp
->status
= STATUS_READ_FAILED
;
3857 hEv
= pfn_WSACreateEvent ();
3858 rc
= pfn_WSAEventSelect (SOCK_HANDLE (fd
), hEv
, FD_ACCEPT
);
3859 if (rc
!= SOCKET_ERROR
)
3861 rc
= WaitForSingleObject (hEv
, INFINITE
);
3862 pfn_WSAEventSelect (SOCK_HANDLE (fd
), NULL
, 0);
3863 if (rc
== WAIT_OBJECT_0
)
3864 cp
->status
= STATUS_READ_SUCCEEDED
;
3866 pfn_WSACloseEvent (hEv
);
3872 sys_read (int fd
, char * buffer
, unsigned int count
)
3877 char * orig_buffer
= buffer
;
3885 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SOCKET
))
3887 child_process
*cp
= fd_info
[fd
].cp
;
3889 if ((fd_info
[fd
].flags
& FILE_READ
) == 0)
3897 /* re-read CR carried over from last read */
3898 if (fd_info
[fd
].flags
& FILE_LAST_CR
)
3900 if (fd_info
[fd
].flags
& FILE_BINARY
) abort ();
3904 fd_info
[fd
].flags
&= ~FILE_LAST_CR
;
3907 /* presence of a child_process structure means we are operating in
3908 non-blocking mode - otherwise we just call _read directly.
3909 Note that the child_process structure might be missing because
3910 reap_subprocess has been called; in this case the pipe is
3911 already broken, so calling _read on it is okay. */
3914 int current_status
= cp
->status
;
3916 switch (current_status
)
3918 case STATUS_READ_FAILED
:
3919 case STATUS_READ_ERROR
:
3920 /* report normal EOF if nothing in buffer */
3922 fd_info
[fd
].flags
|= FILE_AT_EOF
;
3925 case STATUS_READ_READY
:
3926 case STATUS_READ_IN_PROGRESS
:
3927 DebPrint (("sys_read called when read is in progress\n"));
3928 errno
= EWOULDBLOCK
;
3931 case STATUS_READ_SUCCEEDED
:
3932 /* consume read-ahead char */
3933 *buffer
++ = cp
->chr
;
3936 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
3937 ResetEvent (cp
->char_avail
);
3939 case STATUS_READ_ACKNOWLEDGED
:
3943 DebPrint (("sys_read: bad status %d\n", current_status
));
3948 if (fd_info
[fd
].flags
& FILE_PIPE
)
3950 PeekNamedPipe ((HANDLE
) _get_osfhandle (fd
), NULL
, 0, NULL
, &waiting
, NULL
);
3951 to_read
= min (waiting
, (DWORD
) count
);
3954 nchars
+= _read (fd
, buffer
, to_read
);
3957 else /* FILE_SOCKET */
3959 if (winsock_lib
== NULL
) abort ();
3961 /* do the equivalent of a non-blocking read */
3962 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONREAD
, &waiting
);
3963 if (waiting
== 0 && nchars
== 0)
3965 h_errno
= errno
= EWOULDBLOCK
;
3971 /* always use binary mode for sockets */
3972 int res
= pfn_recv (SOCK_HANDLE (fd
), buffer
, count
, 0);
3973 if (res
== SOCKET_ERROR
)
3975 DebPrint(("sys_read.recv failed with error %d on socket %ld\n",
3976 pfn_WSAGetLastError (), SOCK_HANDLE (fd
)));
3987 int nread
= _read (fd
, buffer
, count
);
3990 else if (nchars
== 0)
3995 fd_info
[fd
].flags
|= FILE_AT_EOF
;
3996 /* Perform text mode translation if required. */
3997 else if ((fd_info
[fd
].flags
& FILE_BINARY
) == 0)
3999 nchars
= crlf_to_lf (nchars
, orig_buffer
);
4000 /* If buffer contains only CR, return that. To be absolutely
4001 sure we should attempt to read the next char, but in
4002 practice a CR to be followed by LF would not appear by
4003 itself in the buffer. */
4004 if (nchars
> 1 && orig_buffer
[nchars
- 1] == 0x0d)
4006 fd_info
[fd
].flags
|= FILE_LAST_CR
;
4012 nchars
= _read (fd
, buffer
, count
);
4017 /* For now, don't bother with a non-blocking mode */
4019 sys_write (int fd
, const void * buffer
, unsigned int count
)
4029 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SOCKET
))
4031 if ((fd_info
[fd
].flags
& FILE_WRITE
) == 0)
4037 /* Perform text mode translation if required. */
4038 if ((fd_info
[fd
].flags
& FILE_BINARY
) == 0)
4040 char * tmpbuf
= alloca (count
* 2);
4041 unsigned char * src
= (void *)buffer
;
4042 unsigned char * dst
= tmpbuf
;
4047 unsigned char *next
;
4048 /* copy next line or remaining bytes */
4049 next
= _memccpy (dst
, src
, '\n', nbytes
);
4052 /* copied one line ending with '\n' */
4053 int copied
= next
- dst
;
4056 /* insert '\r' before '\n' */
4063 /* copied remaining partial line -> now finished */
4071 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& FILE_SOCKET
)
4073 unsigned long nblock
= 0;
4074 if (winsock_lib
== NULL
) abort ();
4076 /* TODO: implement select() properly so non-blocking I/O works. */
4077 /* For now, make sure the write blocks. */
4078 if (fd_info
[fd
].flags
& FILE_NDELAY
)
4079 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
4081 nchars
= pfn_send (SOCK_HANDLE (fd
), buffer
, count
, 0);
4083 /* Set the socket back to non-blocking if it was before,
4084 for other operations that support it. */
4085 if (fd_info
[fd
].flags
& FILE_NDELAY
)
4088 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
4091 if (nchars
== SOCKET_ERROR
)
4093 DebPrint(("sys_write.send failed with error %d on socket %ld\n",
4094 pfn_WSAGetLastError (), SOCK_HANDLE (fd
)));
4100 nchars
= _write (fd
, buffer
, count
);
4106 check_windows_init_file ()
4108 extern int noninteractive
, inhibit_window_system
;
4110 /* A common indication that Emacs is not installed properly is when
4111 it cannot find the Windows installation file. If this file does
4112 not exist in the expected place, tell the user. */
4114 if (!noninteractive
&& !inhibit_window_system
)
4116 extern Lisp_Object Vwindow_system
, Vload_path
, Qfile_exists_p
;
4117 Lisp_Object objs
[2];
4118 Lisp_Object full_load_path
;
4119 Lisp_Object init_file
;
4122 objs
[0] = Vload_path
;
4123 objs
[1] = decode_env_path (0, (getenv ("EMACSLOADPATH")));
4124 full_load_path
= Fappend (2, objs
);
4125 init_file
= build_string ("term/w32-win");
4126 fd
= openp (full_load_path
, init_file
, Fget_load_suffixes (), NULL
, Qnil
);
4129 Lisp_Object load_path_print
= Fprin1_to_string (full_load_path
, Qnil
);
4130 char *init_file_name
= SDATA (init_file
);
4131 char *load_path
= SDATA (load_path_print
);
4132 char *buffer
= alloca (1024
4133 + strlen (init_file_name
)
4134 + strlen (load_path
));
4137 "The Emacs Windows initialization file \"%s.el\" "
4138 "could not be found in your Emacs installation. "
4139 "Emacs checked the following directories for this file:\n"
4141 "When Emacs cannot find this file, it usually means that it "
4142 "was not installed properly, or its distribution file was "
4143 "not unpacked properly.\nSee the README.W32 file in the "
4144 "top-level Emacs directory for more information.",
4145 init_file_name
, load_path
);
4148 "Emacs Abort Dialog",
4149 MB_OK
| MB_ICONEXCLAMATION
| MB_TASKMODAL
);
4150 /* Use the low-level Emacs abort. */
4165 /* shutdown the socket interface if necessary */
4176 /* Initialise the socket interface now if available and requested by
4177 the user by defining PRELOAD_WINSOCK; otherwise loading will be
4178 delayed until open-network-stream is called (w32-has-winsock can
4179 also be used to dynamically load or reload winsock).
4181 Conveniently, init_environment is called before us, so
4182 PRELOAD_WINSOCK can be set in the registry. */
4184 /* Always initialize this correctly. */
4187 if (getenv ("PRELOAD_WINSOCK") != NULL
)
4188 init_winsock (TRUE
);
4191 /* Initial preparation for subprocess support: replace our standard
4192 handles with non-inheritable versions. */
4195 HANDLE stdin_save
= INVALID_HANDLE_VALUE
;
4196 HANDLE stdout_save
= INVALID_HANDLE_VALUE
;
4197 HANDLE stderr_save
= INVALID_HANDLE_VALUE
;
4199 parent
= GetCurrentProcess ();
4201 /* ignore errors when duplicating and closing; typically the
4202 handles will be invalid when running as a gui program. */
4203 DuplicateHandle (parent
,
4204 GetStdHandle (STD_INPUT_HANDLE
),
4209 DUPLICATE_SAME_ACCESS
);
4211 DuplicateHandle (parent
,
4212 GetStdHandle (STD_OUTPUT_HANDLE
),
4217 DUPLICATE_SAME_ACCESS
);
4219 DuplicateHandle (parent
,
4220 GetStdHandle (STD_ERROR_HANDLE
),
4225 DUPLICATE_SAME_ACCESS
);
4231 if (stdin_save
!= INVALID_HANDLE_VALUE
)
4232 _open_osfhandle ((long) stdin_save
, O_TEXT
);
4234 _open ("nul", O_TEXT
| O_NOINHERIT
| O_RDONLY
);
4237 if (stdout_save
!= INVALID_HANDLE_VALUE
)
4238 _open_osfhandle ((long) stdout_save
, O_TEXT
);
4240 _open ("nul", O_TEXT
| O_NOINHERIT
| O_WRONLY
);
4243 if (stderr_save
!= INVALID_HANDLE_VALUE
)
4244 _open_osfhandle ((long) stderr_save
, O_TEXT
);
4246 _open ("nul", O_TEXT
| O_NOINHERIT
| O_WRONLY
);
4250 /* unfortunately, atexit depends on implementation of malloc */
4251 /* atexit (term_ntproc); */
4252 signal (SIGABRT
, term_ntproc
);
4254 /* determine which drives are fixed, for GetCachedVolumeInformation */
4256 /* GetDriveType must have trailing backslash. */
4257 char drive
[] = "A:\\";
4259 /* Loop over all possible drive letters */
4260 while (*drive
<= 'Z')
4262 /* Record if this drive letter refers to a fixed drive. */
4263 fixed_drives
[DRIVE_INDEX (*drive
)] =
4264 (GetDriveType (drive
) == DRIVE_FIXED
);
4269 /* Reset the volume info cache. */
4270 volume_cache
= NULL
;
4273 /* Check to see if Emacs has been installed correctly. */
4274 check_windows_init_file ();
4278 shutdown_handler ensures that buffers' autosave files are
4279 up to date when the user logs off, or the system shuts down.
4281 BOOL WINAPI
shutdown_handler(DWORD type
)
4283 /* Ctrl-C and Ctrl-Break are already suppressed, so don't handle them. */
4284 if (type
== CTRL_CLOSE_EVENT
/* User closes console window. */
4285 || type
== CTRL_LOGOFF_EVENT
/* User logs off. */
4286 || type
== CTRL_SHUTDOWN_EVENT
) /* User shutsdown. */
4288 /* Shut down cleanly, making sure autosave files are up to date. */
4289 shut_down_emacs (0, 0, Qnil
);
4292 /* Allow other handlers to handle this signal. */
4297 globals_of_w32 is used to initialize those global variables that
4298 must always be initialized on startup even when the global variable
4299 initialized is non zero (see the function main in emacs.c).
4304 HMODULE kernel32
= GetModuleHandle ("kernel32.dll");
4306 get_process_times_fn
= (GetProcessTimes_Proc
)
4307 GetProcAddress (kernel32
, "GetProcessTimes");
4309 g_b_init_is_windows_9x
= 0;
4310 g_b_init_open_process_token
= 0;
4311 g_b_init_get_token_information
= 0;
4312 g_b_init_lookup_account_sid
= 0;
4313 g_b_init_get_sid_identifier_authority
= 0;
4314 g_b_init_get_sid_sub_authority
= 0;
4315 g_b_init_get_sid_sub_authority_count
= 0;
4316 /* The following sets a handler for shutdown notifications for
4317 console apps. This actually applies to Emacs in both console and
4318 GUI modes, since we had to fool windows into thinking emacs is a
4319 console application to get console mode to work. */
4320 SetConsoleCtrlHandler(shutdown_handler
, TRUE
);
4325 /* arch-tag: 90442dd3-37be-482b-b272-ac752e3049f1
4326 (do not change this comment) */