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 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
78 #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */
79 #include <sys/socket.h>
104 typedef HRESULT (WINAPI
* ShGetFolderPath_fn
)
105 (IN HWND
, IN
int, IN HANDLE
, IN DWORD
, OUT
char *);
107 void globals_of_w32 ();
109 extern Lisp_Object Vw32_downcase_file_names
;
110 extern Lisp_Object Vw32_generate_fake_inodes
;
111 extern Lisp_Object Vw32_get_true_file_attributes
;
112 extern int w32_num_mouse_buttons
;
116 Initialization states
118 static BOOL g_b_init_is_windows_9x
;
119 static BOOL g_b_init_open_process_token
;
120 static BOOL g_b_init_get_token_information
;
121 static BOOL g_b_init_lookup_account_sid
;
122 static BOOL g_b_init_get_sid_identifier_authority
;
125 BEGIN: Wrapper functions around OpenProcessToken
126 and other functions in advapi32.dll that are only
127 supported in Windows NT / 2k / XP
129 /* ** Function pointer typedefs ** */
130 typedef BOOL (WINAPI
* OpenProcessToken_Proc
) (
131 HANDLE ProcessHandle
,
133 PHANDLE TokenHandle
);
134 typedef BOOL (WINAPI
* GetTokenInformation_Proc
) (
136 TOKEN_INFORMATION_CLASS TokenInformationClass
,
137 LPVOID TokenInformation
,
138 DWORD TokenInformationLength
,
139 PDWORD ReturnLength
);
141 const char * const LookupAccountSid_Name
= "LookupAccountSidW";
143 const char * const LookupAccountSid_Name
= "LookupAccountSidA";
145 typedef BOOL (WINAPI
* LookupAccountSid_Proc
) (
146 LPCTSTR lpSystemName
,
151 LPDWORD cbDomainName
,
152 PSID_NAME_USE peUse
);
153 typedef PSID_IDENTIFIER_AUTHORITY (WINAPI
* GetSidIdentifierAuthority_Proc
) (
156 /* ** A utility function ** */
160 static BOOL s_b_ret
=0;
161 OSVERSIONINFO os_ver
;
162 if (g_b_init_is_windows_9x
== 0)
164 g_b_init_is_windows_9x
= 1;
165 ZeroMemory(&os_ver
, sizeof(OSVERSIONINFO
));
166 os_ver
.dwOSVersionInfoSize
= sizeof(OSVERSIONINFO
);
167 if (GetVersionEx (&os_ver
))
169 s_b_ret
= (os_ver
.dwPlatformId
== VER_PLATFORM_WIN32_WINDOWS
);
175 /* ** The wrapper functions ** */
177 BOOL WINAPI
open_process_token (
178 HANDLE ProcessHandle
,
182 static OpenProcessToken_Proc s_pfn_Open_Process_Token
= NULL
;
183 HMODULE hm_advapi32
= NULL
;
184 if (is_windows_9x () == TRUE
)
188 if (g_b_init_open_process_token
== 0)
190 g_b_init_open_process_token
= 1;
191 hm_advapi32
= LoadLibrary ("Advapi32.dll");
192 s_pfn_Open_Process_Token
=
193 (OpenProcessToken_Proc
) GetProcAddress (hm_advapi32
, "OpenProcessToken");
195 if (s_pfn_Open_Process_Token
== NULL
)
200 s_pfn_Open_Process_Token (
207 BOOL WINAPI
get_token_information (
209 TOKEN_INFORMATION_CLASS TokenInformationClass
,
210 LPVOID TokenInformation
,
211 DWORD TokenInformationLength
,
214 static GetTokenInformation_Proc s_pfn_Get_Token_Information
= NULL
;
215 HMODULE hm_advapi32
= NULL
;
216 if (is_windows_9x () == TRUE
)
220 if (g_b_init_get_token_information
== 0)
222 g_b_init_get_token_information
= 1;
223 hm_advapi32
= LoadLibrary ("Advapi32.dll");
224 s_pfn_Get_Token_Information
=
225 (GetTokenInformation_Proc
) GetProcAddress (hm_advapi32
, "GetTokenInformation");
227 if (s_pfn_Get_Token_Information
== NULL
)
232 s_pfn_Get_Token_Information (
234 TokenInformationClass
,
236 TokenInformationLength
,
241 BOOL WINAPI
lookup_account_sid (
242 LPCTSTR lpSystemName
,
247 LPDWORD cbDomainName
,
250 static LookupAccountSid_Proc s_pfn_Lookup_Account_Sid
= NULL
;
251 HMODULE hm_advapi32
= NULL
;
252 if (is_windows_9x () == TRUE
)
256 if (g_b_init_lookup_account_sid
== 0)
258 g_b_init_lookup_account_sid
= 1;
259 hm_advapi32
= LoadLibrary ("Advapi32.dll");
260 s_pfn_Lookup_Account_Sid
=
261 (LookupAccountSid_Proc
) GetProcAddress (hm_advapi32
, LookupAccountSid_Name
);
263 if (s_pfn_Lookup_Account_Sid
== NULL
)
268 s_pfn_Lookup_Account_Sid (
279 PSID_IDENTIFIER_AUTHORITY WINAPI
get_sid_identifier_authority (
282 static GetSidIdentifierAuthority_Proc s_pfn_Get_Sid_Identifier_Authority
= NULL
;
283 HMODULE hm_advapi32
= NULL
;
284 if (is_windows_9x () == TRUE
)
288 if (g_b_init_get_sid_identifier_authority
== 0)
290 g_b_init_get_sid_identifier_authority
= 1;
291 hm_advapi32
= LoadLibrary ("Advapi32.dll");
292 s_pfn_Get_Sid_Identifier_Authority
=
293 (GetSidIdentifierAuthority_Proc
) GetProcAddress (
294 hm_advapi32
, "GetSidIdentifierAuthority");
296 if (s_pfn_Get_Sid_Identifier_Authority
== NULL
)
300 return (s_pfn_Get_Sid_Identifier_Authority (pSid
));
304 END: Wrapper functions around OpenProcessToken
305 and other functions in advapi32.dll that are only
306 supported in Windows NT / 2k / XP
310 /* Equivalent of strerror for W32 error codes. */
312 w32_strerror (int error_no
)
314 static char buf
[500];
317 error_no
= GetLastError ();
320 if (!FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM
, NULL
,
322 0, /* choose most suitable language */
323 buf
, sizeof (buf
), NULL
))
324 sprintf (buf
, "w32 error %u", error_no
);
328 /* Return 1 if P is a valid pointer to an object of size SIZE. Return
329 0 if P is NOT a valid pointer. Return -1 if we cannot validate P.
331 This is called from alloc.c:valid_pointer_p. */
333 w32_valid_pointer_p (void *p
, int size
)
336 HANDLE h
= OpenProcess (PROCESS_VM_READ
, FALSE
, GetCurrentProcessId ());
340 unsigned char *buf
= alloca (size
);
341 int retval
= ReadProcessMemory (h
, p
, buf
, size
, &done
);
350 static char startup_dir
[MAXPATHLEN
];
352 /* Get the current working directory. */
357 if (GetCurrentDirectory (MAXPATHLEN
, dir
) > 0)
361 /* Emacs doesn't actually change directory itself, and we want to
362 force our real wd to be where emacs.exe is to avoid unnecessary
363 conflicts when trying to rename or delete directories. */
364 strcpy (dir
, startup_dir
);
370 /* Emulate gethostname. */
372 gethostname (char *buffer
, int size
)
374 /* NT only allows small host names, so the buffer is
375 certainly large enough. */
376 return !GetComputerName (buffer
, &size
);
378 #endif /* HAVE_SOCKETS */
380 /* Emulate getloadavg. */
382 getloadavg (double loadavg
[], int nelem
)
386 /* A faithful emulation is going to have to be saved for a rainy day. */
387 for (i
= 0; i
< nelem
; i
++)
394 /* Emulate getpwuid, getpwnam and others. */
396 #define PASSWD_FIELD_SIZE 256
398 static char the_passwd_name
[PASSWD_FIELD_SIZE
];
399 static char the_passwd_passwd
[PASSWD_FIELD_SIZE
];
400 static char the_passwd_gecos
[PASSWD_FIELD_SIZE
];
401 static char the_passwd_dir
[PASSWD_FIELD_SIZE
];
402 static char the_passwd_shell
[PASSWD_FIELD_SIZE
];
404 static struct passwd the_passwd
=
416 static struct group the_group
=
418 /* There are no groups on NT, so we just return "root" as the
426 return the_passwd
.pw_uid
;
432 /* I could imagine arguing for checking to see whether the user is
433 in the Administrators group and returning a UID of 0 for that
434 case, but I don't know how wise that would be in the long run. */
441 return the_passwd
.pw_gid
;
453 if (uid
== the_passwd
.pw_uid
)
465 getpwnam (char *name
)
469 pw
= getpwuid (getuid ());
473 if (stricmp (name
, pw
->pw_name
))
482 /* Find the user's real name by opening the process token and
483 looking up the name associated with the user-sid in that token.
485 Use the relative portion of the identifier authority value from
486 the user-sid as the user id value (same for group id using the
487 primary group sid from the process token). */
489 char user_sid
[256], name
[256], domain
[256];
490 DWORD length
= sizeof (name
), dlength
= sizeof (domain
), trash
;
492 SID_NAME_USE user_type
;
494 if (open_process_token (GetCurrentProcess (), TOKEN_QUERY
, &token
)
495 && get_token_information (token
, TokenUser
,
496 (PVOID
) user_sid
, sizeof (user_sid
), &trash
)
497 && lookup_account_sid (NULL
, *((PSID
*) user_sid
), name
, &length
,
498 domain
, &dlength
, &user_type
))
500 strcpy (the_passwd
.pw_name
, name
);
501 /* Determine a reasonable uid value. */
502 if (stricmp ("administrator", name
) == 0)
504 the_passwd
.pw_uid
= 0;
505 the_passwd
.pw_gid
= 0;
509 SID_IDENTIFIER_AUTHORITY
* pSIA
;
511 pSIA
= get_sid_identifier_authority (*((PSID
*) user_sid
));
512 /* I believe the relative portion is the last 4 bytes (of 6)
514 the_passwd
.pw_uid
= ((pSIA
->Value
[2] << 24) +
515 (pSIA
->Value
[3] << 16) +
516 (pSIA
->Value
[4] << 8) +
517 (pSIA
->Value
[5] << 0));
518 /* restrict to conventional uid range for normal users */
519 the_passwd
.pw_uid
= the_passwd
.pw_uid
% 60001;
522 if (get_token_information (token
, TokenPrimaryGroup
,
523 (PVOID
) user_sid
, sizeof (user_sid
), &trash
))
525 SID_IDENTIFIER_AUTHORITY
* pSIA
;
527 pSIA
= get_sid_identifier_authority (*((PSID
*) user_sid
));
528 the_passwd
.pw_gid
= ((pSIA
->Value
[2] << 24) +
529 (pSIA
->Value
[3] << 16) +
530 (pSIA
->Value
[4] << 8) +
531 (pSIA
->Value
[5] << 0));
532 /* I don't know if this is necessary, but for safety... */
533 the_passwd
.pw_gid
= the_passwd
.pw_gid
% 60001;
536 the_passwd
.pw_gid
= the_passwd
.pw_uid
;
539 /* If security calls are not supported (presumably because we
540 are running under Windows 95), fallback to this. */
541 else if (GetUserName (name
, &length
))
543 strcpy (the_passwd
.pw_name
, name
);
544 if (stricmp ("administrator", name
) == 0)
545 the_passwd
.pw_uid
= 0;
547 the_passwd
.pw_uid
= 123;
548 the_passwd
.pw_gid
= the_passwd
.pw_uid
;
552 strcpy (the_passwd
.pw_name
, "unknown");
553 the_passwd
.pw_uid
= 123;
554 the_passwd
.pw_gid
= 123;
557 /* Ensure HOME and SHELL are defined. */
558 if (getenv ("HOME") == NULL
)
560 if (getenv ("SHELL") == NULL
)
563 /* Set dir and shell from environment variables. */
564 strcpy (the_passwd
.pw_dir
, getenv ("HOME"));
565 strcpy (the_passwd
.pw_shell
, getenv ("SHELL"));
574 /* rand () on NT gives us 15 random bits...hack together 30 bits. */
575 return ((rand () << 15) | rand ());
585 /* Normalize filename by converting all path separators to
586 the specified separator. Also conditionally convert upper
587 case path name components to lower case. */
590 normalize_filename (fp
, path_sep
)
597 /* Always lower-case drive letters a-z, even if the filesystem
598 preserves case in filenames.
599 This is so filenames can be compared by string comparison
600 functions that are case-sensitive. Even case-preserving filesystems
601 do not distinguish case in drive letters. */
602 if (fp
[1] == ':' && *fp
>= 'A' && *fp
<= 'Z')
608 if (NILP (Vw32_downcase_file_names
))
612 if (*fp
== '/' || *fp
== '\\')
619 sep
= path_sep
; /* convert to this path separator */
620 elem
= fp
; /* start of current path element */
623 if (*fp
>= 'a' && *fp
<= 'z')
624 elem
= 0; /* don't convert this element */
626 if (*fp
== 0 || *fp
== ':')
628 sep
= *fp
; /* restore current separator (or 0) */
629 *fp
= '/'; /* after conversion of this element */
632 if (*fp
== '/' || *fp
== '\\')
634 if (elem
&& elem
!= fp
)
636 *fp
= 0; /* temporary end of string */
637 _strlwr (elem
); /* while we convert to lower case */
639 *fp
= sep
; /* convert (or restore) path separator */
640 elem
= fp
+ 1; /* next element starts after separator */
646 /* Destructively turn backslashes into slashes. */
648 dostounix_filename (p
)
651 normalize_filename (p
, '/');
654 /* Destructively turn slashes into backslashes. */
656 unixtodos_filename (p
)
659 normalize_filename (p
, '\\');
662 /* Remove all CR's that are followed by a LF.
663 (From msdos.c...probably should figure out a way to share it,
664 although this code isn't going to ever change.) */
668 register unsigned char *buf
;
670 unsigned char *np
= buf
;
671 unsigned char *startp
= buf
;
672 unsigned char *endp
= buf
+ n
;
676 while (buf
< endp
- 1)
680 if (*(++buf
) != 0x0a)
691 /* Parse the root part of file name, if present. Return length and
692 optionally store pointer to char after root. */
694 parse_root (char * name
, char ** pPath
)
701 /* find the root name of the volume if given */
702 if (isalpha (name
[0]) && name
[1] == ':')
704 /* skip past drive specifier */
706 if (IS_DIRECTORY_SEP (name
[0]))
709 else if (IS_DIRECTORY_SEP (name
[0]) && IS_DIRECTORY_SEP (name
[1]))
715 if (IS_DIRECTORY_SEP (*name
) && --slashes
== 0)
720 if (IS_DIRECTORY_SEP (name
[0]))
730 /* Get long base name for name; name is assumed to be absolute. */
732 get_long_basename (char * name
, char * buf
, int size
)
734 WIN32_FIND_DATA find_data
;
738 /* must be valid filename, no wild cards or other invalid characters */
739 if (_mbspbrk (name
, "*?|<>\""))
742 dir_handle
= FindFirstFile (name
, &find_data
);
743 if (dir_handle
!= INVALID_HANDLE_VALUE
)
745 if ((len
= strlen (find_data
.cFileName
)) < size
)
746 memcpy (buf
, find_data
.cFileName
, len
+ 1);
749 FindClose (dir_handle
);
754 /* Get long name for file, if possible (assumed to be absolute). */
756 w32_get_long_filename (char * name
, char * buf
, int size
)
761 char full
[ MAX_PATH
];
768 /* Use local copy for destructive modification. */
769 memcpy (full
, name
, len
+1);
770 unixtodos_filename (full
);
772 /* Copy root part verbatim. */
773 len
= parse_root (full
, &p
);
774 memcpy (o
, full
, len
);
779 while (p
!= NULL
&& *p
)
782 p
= strchr (q
, '\\');
784 len
= get_long_basename (full
, o
, size
);
807 is_unc_volume (const char *filename
)
809 const char *ptr
= filename
;
811 if (!IS_DIRECTORY_SEP (ptr
[0]) || !IS_DIRECTORY_SEP (ptr
[1]) || !ptr
[2])
814 if (_mbspbrk (ptr
+ 2, "*?|<>\"\\/"))
820 /* Routines that are no-ops on NT but are defined to get Emacs to compile. */
823 sigsetmask (int signal_mask
)
847 setpgrp (int pid
, int gid
)
859 unrequest_sigio (void)
870 #define REG_ROOT "SOFTWARE\\GNU\\Emacs"
873 w32_get_resource (key
, lpdwtype
)
878 HKEY hrootkey
= NULL
;
881 /* Check both the current user and the local machine to see if
882 we have any resources. */
884 if (RegOpenKeyEx (HKEY_CURRENT_USER
, REG_ROOT
, 0, KEY_READ
, &hrootkey
) == ERROR_SUCCESS
)
888 if (RegQueryValueEx (hrootkey
, key
, NULL
, NULL
, NULL
, &cbData
) == ERROR_SUCCESS
889 && (lpvalue
= (LPBYTE
) xmalloc (cbData
)) != NULL
890 && RegQueryValueEx (hrootkey
, key
, NULL
, lpdwtype
, lpvalue
, &cbData
) == ERROR_SUCCESS
)
892 RegCloseKey (hrootkey
);
896 if (lpvalue
) xfree (lpvalue
);
898 RegCloseKey (hrootkey
);
901 if (RegOpenKeyEx (HKEY_LOCAL_MACHINE
, REG_ROOT
, 0, KEY_READ
, &hrootkey
) == ERROR_SUCCESS
)
905 if (RegQueryValueEx (hrootkey
, key
, NULL
, NULL
, NULL
, &cbData
) == ERROR_SUCCESS
906 && (lpvalue
= (LPBYTE
) xmalloc (cbData
)) != NULL
907 && RegQueryValueEx (hrootkey
, key
, NULL
, lpdwtype
, lpvalue
, &cbData
) == ERROR_SUCCESS
)
909 RegCloseKey (hrootkey
);
913 if (lpvalue
) xfree (lpvalue
);
915 RegCloseKey (hrootkey
);
921 char *get_emacs_configuration (void);
922 extern Lisp_Object Vsystem_configuration
;
925 init_environment (char ** argv
)
927 static const char * const tempdirs
[] = {
928 "$TMPDIR", "$TEMP", "$TMP", "c:/"
933 const int imax
= sizeof (tempdirs
) / sizeof (tempdirs
[0]);
935 /* Make sure they have a usable $TMPDIR. Many Emacs functions use
936 temporary files and assume "/tmp" if $TMPDIR is unset, which
937 will break on DOS/Windows. Refuse to work if we cannot find
938 a directory, not even "c:/", usable for that purpose. */
939 for (i
= 0; i
< imax
; i
++)
941 const char *tmp
= tempdirs
[i
];
944 tmp
= getenv (tmp
+ 1);
945 /* Note that `access' can lie to us if the directory resides on a
946 read-only filesystem, like CD-ROM or a write-protected floppy.
947 The only way to be really sure is to actually create a file and
948 see if it succeeds. But I think that's too much to ask. */
949 if (tmp
&& _access (tmp
, D_OK
) == 0)
951 char * var
= alloca (strlen (tmp
) + 8);
952 sprintf (var
, "TMPDIR=%s", tmp
);
953 _putenv (strdup (var
));
960 Fcons (build_string ("no usable temporary directories found!!"),
962 "While setting TMPDIR: ");
964 /* Check for environment variables and use registry settings if they
965 don't exist. Fallback on default values where applicable. */
970 char locale_name
[32];
972 char default_home
[MAX_PATH
];
974 static const struct env_entry
981 {"PRELOAD_WINSOCK", NULL
},
982 {"emacs_dir", "C:/emacs"},
983 {"EMACSLOADPATH", "%emacs_dir%/site-lisp;%emacs_dir%/../site-lisp;%emacs_dir%/lisp;%emacs_dir%/leim"},
984 {"SHELL", "%emacs_dir%/bin/cmdproxy.exe"},
985 {"EMACSDATA", "%emacs_dir%/etc"},
986 {"EMACSPATH", "%emacs_dir%/bin"},
987 /* We no longer set INFOPATH because Info-default-directory-list
989 /* {"INFOPATH", "%emacs_dir%/info"}, */
990 {"EMACSDOC", "%emacs_dir%/etc"},
995 #define N_ENV_VARS sizeof(dflt_envvars)/sizeof(dflt_envvars[0])
997 /* We need to copy dflt_envvars[] and work on the copy because we
998 don't want the dumped Emacs to inherit the values of
999 environment variables we saw during dumping (which could be on
1000 a different system). The defaults above must be left intact. */
1001 struct env_entry env_vars
[N_ENV_VARS
];
1003 for (i
= 0; i
< N_ENV_VARS
; i
++)
1004 env_vars
[i
] = dflt_envvars
[i
];
1006 /* For backwards compatibility, check if a .emacs file exists in C:/
1007 If not, then we can try to default to the appdata directory under the
1008 user's profile, which is more likely to be writable. */
1009 if (stat ("C:/.emacs", &ignored
) < 0)
1011 HRESULT profile_result
;
1012 /* Dynamically load ShGetFolderPath, as it won't exist on versions
1013 of Windows 95 and NT4 that have not been updated to include
1014 MSIE 5. Also we don't link with shell32.dll by default. */
1015 HMODULE shell32_dll
;
1016 ShGetFolderPath_fn get_folder_path
;
1017 shell32_dll
= GetModuleHandle ("shell32.dll");
1018 get_folder_path
= (ShGetFolderPath_fn
)
1019 GetProcAddress (shell32_dll
, "SHGetFolderPathA");
1021 if (get_folder_path
!= NULL
)
1023 profile_result
= get_folder_path (NULL
, CSIDL_APPDATA
, NULL
,
1026 /* If we can't get the appdata dir, revert to old behaviour. */
1027 if (profile_result
== S_OK
)
1028 env_vars
[0].def_value
= default_home
;
1031 /* Unload shell32.dll, it is not needed anymore. */
1032 FreeLibrary (shell32_dll
);
1035 /* Get default locale info and use it for LANG. */
1036 if (GetLocaleInfo (LOCALE_USER_DEFAULT
,
1037 LOCALE_SABBREVLANGNAME
| LOCALE_USE_CP_ACP
,
1038 locale_name
, sizeof (locale_name
)))
1040 for (i
= 0; i
< N_ENV_VARS
; i
++)
1042 if (strcmp (env_vars
[i
].name
, "LANG") == 0)
1044 env_vars
[i
].def_value
= locale_name
;
1050 #define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */
1052 /* Treat emacs_dir specially: set it unconditionally based on our
1053 location, if it appears that we are running from the bin subdir
1054 of a standard installation. */
1057 char modname
[MAX_PATH
];
1059 if (!GetModuleFileName (NULL
, modname
, MAX_PATH
))
1061 if ((p
= strrchr (modname
, '\\')) == NULL
)
1065 if ((p
= strrchr (modname
, '\\')) && stricmp (p
, "\\bin") == 0)
1067 char buf
[SET_ENV_BUF_SIZE
];
1070 for (p
= modname
; *p
; p
++)
1071 if (*p
== '\\') *p
= '/';
1073 _snprintf (buf
, sizeof(buf
)-1, "emacs_dir=%s", modname
);
1074 _putenv (strdup (buf
));
1076 /* Handle running emacs from the build directory: src/oo-spd/i386/ */
1078 /* FIXME: should use substring of get_emacs_configuration ().
1079 But I don't think the Windows build supports alpha, mips etc
1080 anymore, so have taken the easy option for now. */
1081 else if (p
&& stricmp (p
, "\\i386") == 0)
1084 p
= strrchr (modname
, '\\');
1088 p
= strrchr (modname
, '\\');
1089 if (p
&& stricmp (p
, "\\src") == 0)
1091 char buf
[SET_ENV_BUF_SIZE
];
1094 for (p
= modname
; *p
; p
++)
1095 if (*p
== '\\') *p
= '/';
1097 _snprintf (buf
, sizeof(buf
)-1, "emacs_dir=%s", modname
);
1098 _putenv (strdup (buf
));
1104 for (i
= 0; i
< N_ENV_VARS
; i
++)
1106 if (!getenv (env_vars
[i
].name
))
1110 if ((lpval
= w32_get_resource (env_vars
[i
].name
, &dwType
)) == NULL
1111 /* Also ignore empty environment variables. */
1114 if (lpval
) xfree (lpval
);
1115 lpval
= env_vars
[i
].def_value
;
1116 dwType
= REG_EXPAND_SZ
;
1122 char buf1
[SET_ENV_BUF_SIZE
], buf2
[SET_ENV_BUF_SIZE
];
1124 if (dwType
== REG_EXPAND_SZ
)
1125 ExpandEnvironmentStrings ((LPSTR
) lpval
, buf1
, sizeof(buf1
));
1126 else if (dwType
== REG_SZ
)
1127 strcpy (buf1
, lpval
);
1128 if (dwType
== REG_EXPAND_SZ
|| dwType
== REG_SZ
)
1130 _snprintf (buf2
, sizeof(buf2
)-1, "%s=%s", env_vars
[i
].name
,
1132 _putenv (strdup (buf2
));
1142 /* Rebuild system configuration to reflect invoking system. */
1143 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
1145 /* Another special case: on NT, the PATH variable is actually named
1146 "Path" although cmd.exe (perhaps NT itself) arranges for
1147 environment variable lookup and setting to be case insensitive.
1148 However, Emacs assumes a fully case sensitive environment, so we
1149 need to change "Path" to "PATH" to match the expectations of
1150 various elisp packages. We do this by the sneaky method of
1151 modifying the string in the C runtime environ entry.
1153 The same applies to COMSPEC. */
1157 for (envp
= environ
; *envp
; envp
++)
1158 if (_strnicmp (*envp
, "PATH=", 5) == 0)
1159 memcpy (*envp
, "PATH=", 5);
1160 else if (_strnicmp (*envp
, "COMSPEC=", 8) == 0)
1161 memcpy (*envp
, "COMSPEC=", 8);
1164 /* Remember the initial working directory for getwd, then make the
1165 real wd be the location of emacs.exe to avoid conflicts when
1166 renaming or deleting directories. (We also don't call chdir when
1167 running subprocesses for the same reason.) */
1168 if (!GetCurrentDirectory (MAXPATHLEN
, startup_dir
))
1173 static char modname
[MAX_PATH
];
1175 if (!GetModuleFileName (NULL
, modname
, MAX_PATH
))
1177 if ((p
= strrchr (modname
, '\\')) == NULL
)
1181 SetCurrentDirectory (modname
);
1183 /* Ensure argv[0] has the full path to Emacs. */
1188 /* Determine if there is a middle mouse button, to allow parse_button
1189 to decide whether right mouse events should be mouse-2 or
1191 w32_num_mouse_buttons
= GetSystemMetrics (SM_CMOUSEBUTTONS
);
1197 emacs_root_dir (void)
1199 static char root_dir
[FILENAME_MAX
];
1202 p
= getenv ("emacs_dir");
1205 strcpy (root_dir
, p
);
1206 root_dir
[parse_root (root_dir
, NULL
)] = '\0';
1207 dostounix_filename (root_dir
);
1211 /* We don't have scripts to automatically determine the system configuration
1212 for Emacs before it's compiled, and we don't want to have to make the
1213 user enter it, so we define EMACS_CONFIGURATION to invoke this runtime
1217 get_emacs_configuration (void)
1219 char *arch
, *oem
, *os
;
1221 static char configuration_buffer
[32];
1223 /* Determine the processor type. */
1224 switch (get_processor_type ())
1227 #ifdef PROCESSOR_INTEL_386
1228 case PROCESSOR_INTEL_386
:
1229 case PROCESSOR_INTEL_486
:
1230 case PROCESSOR_INTEL_PENTIUM
:
1235 #ifdef PROCESSOR_INTEL_860
1236 case PROCESSOR_INTEL_860
:
1241 #ifdef PROCESSOR_MIPS_R2000
1242 case PROCESSOR_MIPS_R2000
:
1243 case PROCESSOR_MIPS_R3000
:
1244 case PROCESSOR_MIPS_R4000
:
1249 #ifdef PROCESSOR_ALPHA_21064
1250 case PROCESSOR_ALPHA_21064
:
1260 /* Use the OEM field to reflect the compiler/library combination. */
1262 #define COMPILER_NAME "msvc"
1265 #define COMPILER_NAME "mingw"
1267 #define COMPILER_NAME "unknown"
1270 oem
= COMPILER_NAME
;
1272 switch (osinfo_cache
.dwPlatformId
) {
1273 case VER_PLATFORM_WIN32_NT
:
1275 build_num
= osinfo_cache
.dwBuildNumber
;
1277 case VER_PLATFORM_WIN32_WINDOWS
:
1278 if (osinfo_cache
.dwMinorVersion
== 0) {
1283 build_num
= LOWORD (osinfo_cache
.dwBuildNumber
);
1285 case VER_PLATFORM_WIN32s
:
1286 /* Not supported, should not happen. */
1288 build_num
= LOWORD (osinfo_cache
.dwBuildNumber
);
1296 if (osinfo_cache
.dwPlatformId
== VER_PLATFORM_WIN32_NT
) {
1297 sprintf (configuration_buffer
, "%s-%s-%s%d.%d.%d", arch
, oem
, os
,
1298 get_w32_major_version (), get_w32_minor_version (), build_num
);
1300 sprintf (configuration_buffer
, "%s-%s-%s.%d", arch
, oem
, os
, build_num
);
1303 return configuration_buffer
;
1307 get_emacs_configuration_options (void)
1309 static char options_buffer
[256];
1311 /* Work out the effective configure options for this build. */
1313 #define COMPILER_VERSION "--with-msvc (%d.%02d)", _MSC_VER / 100, _MSC_VER % 100
1316 #define COMPILER_VERSION "--with-gcc (%d.%d)", __GNUC__, __GNUC_MINOR__
1318 #define COMPILER_VERSION ""
1322 sprintf (options_buffer
, COMPILER_VERSION
);
1324 strcat (options_buffer
, " --no-opt");
1327 strcat (options_buffer
, " --cflags");
1328 strcat (options_buffer
, USER_CFLAGS
);
1331 strcat (options_buffer
, " --ldflags");
1332 strcat (options_buffer
, USER_LDFLAGS
);
1334 return options_buffer
;
1338 #include <sys/timeb.h>
1340 /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */
1342 gettimeofday (struct timeval
*tv
, struct timezone
*tz
)
1347 tv
->tv_sec
= tb
.time
;
1348 tv
->tv_usec
= tb
.millitm
* 1000L;
1351 tz
->tz_minuteswest
= tb
.timezone
; /* minutes west of Greenwich */
1352 tz
->tz_dsttime
= tb
.dstflag
; /* type of dst correction */
1356 /* ------------------------------------------------------------------------- */
1357 /* IO support and wrapper functions for W32 API. */
1358 /* ------------------------------------------------------------------------- */
1360 /* Place a wrapper around the MSVC version of ctime. It returns NULL
1361 on network directories, so we handle that case here.
1362 (Ulrich Leodolter, 1/11/95). */
1364 sys_ctime (const time_t *t
)
1366 char *str
= (char *) ctime (t
);
1367 return (str
? str
: "Sun Jan 01 00:00:00 1970");
1370 /* Emulate sleep...we could have done this with a define, but that
1371 would necessitate including windows.h in the files that used it.
1372 This is much easier. */
1374 sys_sleep (int seconds
)
1376 Sleep (seconds
* 1000);
1379 /* Internal MSVC functions for low-level descriptor munging */
1380 extern int __cdecl
_set_osfhnd (int fd
, long h
);
1381 extern int __cdecl
_free_osfhnd (int fd
);
1383 /* parallel array of private info on file handles */
1384 filedesc fd_info
[ MAXDESC
];
1386 typedef struct volume_info_data
{
1387 struct volume_info_data
* next
;
1389 /* time when info was obtained */
1392 /* actual volume info */
1401 /* Global referenced by various functions. */
1402 static volume_info_data volume_info
;
1404 /* Vector to indicate which drives are local and fixed (for which cached
1405 data never expires). */
1406 static BOOL fixed_drives
[26];
1408 /* Consider cached volume information to be stale if older than 10s,
1409 at least for non-local drives. Info for fixed drives is never stale. */
1410 #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' )
1411 #define VOLINFO_STILL_VALID( root_dir, info ) \
1412 ( ( isalpha (root_dir[0]) && \
1413 fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \
1414 || GetTickCount () - info->timestamp < 10000 )
1416 /* Cache support functions. */
1418 /* Simple linked list with linear search is sufficient. */
1419 static volume_info_data
*volume_cache
= NULL
;
1421 static volume_info_data
*
1422 lookup_volume_info (char * root_dir
)
1424 volume_info_data
* info
;
1426 for (info
= volume_cache
; info
; info
= info
->next
)
1427 if (stricmp (info
->root_dir
, root_dir
) == 0)
1433 add_volume_info (char * root_dir
, volume_info_data
* info
)
1435 info
->root_dir
= xstrdup (root_dir
);
1436 info
->next
= volume_cache
;
1437 volume_cache
= info
;
1441 /* Wrapper for GetVolumeInformation, which uses caching to avoid
1442 performance penalty (~2ms on 486 for local drives, 7.5ms for local
1443 cdrom drive, ~5-10ms or more for remote drives on LAN). */
1445 GetCachedVolumeInformation (char * root_dir
)
1447 volume_info_data
* info
;
1448 char default_root
[ MAX_PATH
];
1450 /* NULL for root_dir means use root from current directory. */
1451 if (root_dir
== NULL
)
1453 if (GetCurrentDirectory (MAX_PATH
, default_root
) == 0)
1455 parse_root (default_root
, &root_dir
);
1457 root_dir
= default_root
;
1460 /* Local fixed drives can be cached permanently. Removable drives
1461 cannot be cached permanently, since the volume name and serial
1462 number (if nothing else) can change. Remote drives should be
1463 treated as if they are removable, since there is no sure way to
1464 tell whether they are or not. Also, the UNC association of drive
1465 letters mapped to remote volumes can be changed at any time (even
1466 by other processes) without notice.
1468 As a compromise, so we can benefit from caching info for remote
1469 volumes, we use a simple expiry mechanism to invalidate cache
1470 entries that are more than ten seconds old. */
1473 /* No point doing this, because WNetGetConnection is even slower than
1474 GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW,
1475 GetDriveType is about the only call of this type which does not
1476 involve network access, and so is extremely quick). */
1478 /* Map drive letter to UNC if remote. */
1479 if ( isalpha( root_dir
[0] ) && !fixed
[ DRIVE_INDEX( root_dir
[0] ) ] )
1481 char remote_name
[ 256 ];
1482 char drive
[3] = { root_dir
[0], ':' };
1484 if (WNetGetConnection (drive
, remote_name
, sizeof (remote_name
))
1486 /* do something */ ;
1490 info
= lookup_volume_info (root_dir
);
1492 if (info
== NULL
|| ! VOLINFO_STILL_VALID (root_dir
, info
))
1500 /* Info is not cached, or is stale. */
1501 if (!GetVolumeInformation (root_dir
,
1502 name
, sizeof (name
),
1506 type
, sizeof (type
)))
1509 /* Cache the volume information for future use, overwriting existing
1510 entry if present. */
1513 info
= (volume_info_data
*) xmalloc (sizeof (volume_info_data
));
1514 add_volume_info (root_dir
, info
);
1522 info
->name
= xstrdup (name
);
1523 info
->serialnum
= serialnum
;
1524 info
->maxcomp
= maxcomp
;
1525 info
->flags
= flags
;
1526 info
->type
= xstrdup (type
);
1527 info
->timestamp
= GetTickCount ();
1533 /* Get information on the volume where name is held; set path pointer to
1534 start of pathname in name (past UNC header\volume header if present). */
1536 get_volume_info (const char * name
, const char ** pPath
)
1538 char temp
[MAX_PATH
];
1539 char *rootname
= NULL
; /* default to current volume */
1540 volume_info_data
* info
;
1545 /* find the root name of the volume if given */
1546 if (isalpha (name
[0]) && name
[1] == ':')
1554 else if (IS_DIRECTORY_SEP (name
[0]) && IS_DIRECTORY_SEP (name
[1]))
1561 if (IS_DIRECTORY_SEP (*name
) && --slashes
== 0)
1574 info
= GetCachedVolumeInformation (rootname
);
1577 /* Set global referenced by other functions. */
1578 volume_info
= *info
;
1584 /* Determine if volume is FAT format (ie. only supports short 8.3
1585 names); also set path pointer to start of pathname in name. */
1587 is_fat_volume (const char * name
, const char ** pPath
)
1589 if (get_volume_info (name
, pPath
))
1590 return (volume_info
.maxcomp
== 12);
1594 /* Map filename to a legal 8.3 name if necessary. */
1596 map_w32_filename (const char * name
, const char ** pPath
)
1598 static char shortname
[MAX_PATH
];
1599 char * str
= shortname
;
1602 const char * save_name
= name
;
1604 if (strlen (name
) >= MAX_PATH
)
1606 /* Return a filename which will cause callers to fail. */
1607 strcpy (shortname
, "?");
1611 if (is_fat_volume (name
, (const char **)&path
)) /* truncate to 8.3 */
1613 register int left
= 8; /* maximum number of chars in part */
1614 register int extn
= 0; /* extension added? */
1615 register int dots
= 2; /* maximum number of dots allowed */
1618 *str
++ = *name
++; /* skip past UNC header */
1620 while ((c
= *name
++))
1627 extn
= 0; /* reset extension flags */
1628 dots
= 2; /* max 2 dots */
1629 left
= 8; /* max length 8 for main part */
1633 extn
= 0; /* reset extension flags */
1634 dots
= 2; /* max 2 dots */
1635 left
= 8; /* max length 8 for main part */
1640 /* Convert path components of the form .xxx to _xxx,
1641 but leave . and .. as they are. This allows .emacs
1642 to be read as _emacs, for example. */
1646 IS_DIRECTORY_SEP (*name
))
1661 extn
= 1; /* we've got an extension */
1662 left
= 3; /* 3 chars in extension */
1666 /* any embedded dots after the first are converted to _ */
1671 case '#': /* don't lose these, they're important */
1673 str
[-1] = c
; /* replace last character of part */
1678 *str
++ = tolower (c
); /* map to lower case (looks nicer) */
1680 dots
= 0; /* started a path component */
1689 strcpy (shortname
, name
);
1690 unixtodos_filename (shortname
);
1694 *pPath
= shortname
+ (path
- save_name
);
1700 is_exec (const char * name
)
1702 char * p
= strrchr (name
, '.');
1705 && (stricmp (p
, ".exe") == 0 ||
1706 stricmp (p
, ".com") == 0 ||
1707 stricmp (p
, ".bat") == 0 ||
1708 stricmp (p
, ".cmd") == 0));
1711 /* Emulate the Unix directory procedures opendir, closedir,
1712 and readdir. We can't use the procedures supplied in sysdep.c,
1713 so we provide them here. */
1715 struct direct dir_static
; /* simulated directory contents */
1716 static HANDLE dir_find_handle
= INVALID_HANDLE_VALUE
;
1717 static int dir_is_fat
;
1718 static char dir_pathname
[MAXPATHLEN
+1];
1719 static WIN32_FIND_DATA dir_find_data
;
1721 /* Support shares on a network resource as subdirectories of a read-only
1723 static HANDLE wnet_enum_handle
= INVALID_HANDLE_VALUE
;
1724 HANDLE
open_unc_volume (const char *);
1725 char *read_unc_volume (HANDLE
, char *, int);
1726 void close_unc_volume (HANDLE
);
1729 opendir (char *filename
)
1733 /* Opening is done by FindFirstFile. However, a read is inherent to
1734 this operation, so we defer the open until read time. */
1736 if (dir_find_handle
!= INVALID_HANDLE_VALUE
)
1738 if (wnet_enum_handle
!= INVALID_HANDLE_VALUE
)
1741 if (is_unc_volume (filename
))
1743 wnet_enum_handle
= open_unc_volume (filename
);
1744 if (wnet_enum_handle
== INVALID_HANDLE_VALUE
)
1748 if (!(dirp
= (DIR *) malloc (sizeof (DIR))))
1755 strncpy (dir_pathname
, map_w32_filename (filename
, NULL
), MAXPATHLEN
);
1756 dir_pathname
[MAXPATHLEN
] = '\0';
1757 dir_is_fat
= is_fat_volume (filename
, NULL
);
1763 closedir (DIR *dirp
)
1765 /* If we have a find-handle open, close it. */
1766 if (dir_find_handle
!= INVALID_HANDLE_VALUE
)
1768 FindClose (dir_find_handle
);
1769 dir_find_handle
= INVALID_HANDLE_VALUE
;
1771 else if (wnet_enum_handle
!= INVALID_HANDLE_VALUE
)
1773 close_unc_volume (wnet_enum_handle
);
1774 wnet_enum_handle
= INVALID_HANDLE_VALUE
;
1776 xfree ((char *) dirp
);
1782 if (wnet_enum_handle
!= INVALID_HANDLE_VALUE
)
1784 if (!read_unc_volume (wnet_enum_handle
,
1785 dir_find_data
.cFileName
,
1789 /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */
1790 else if (dir_find_handle
== INVALID_HANDLE_VALUE
)
1792 char filename
[MAXNAMLEN
+ 3];
1795 strcpy (filename
, dir_pathname
);
1796 ln
= strlen (filename
) - 1;
1797 if (!IS_DIRECTORY_SEP (filename
[ln
]))
1798 strcat (filename
, "\\");
1799 strcat (filename
, "*");
1801 dir_find_handle
= FindFirstFile (filename
, &dir_find_data
);
1803 if (dir_find_handle
== INVALID_HANDLE_VALUE
)
1808 if (!FindNextFile (dir_find_handle
, &dir_find_data
))
1812 /* Emacs never uses this value, so don't bother making it match
1813 value returned by stat(). */
1814 dir_static
.d_ino
= 1;
1816 dir_static
.d_reclen
= sizeof (struct direct
) - MAXNAMLEN
+ 3 +
1817 dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
1819 dir_static
.d_namlen
= strlen (dir_find_data
.cFileName
);
1820 strcpy (dir_static
.d_name
, dir_find_data
.cFileName
);
1822 _strlwr (dir_static
.d_name
);
1823 else if (!NILP (Vw32_downcase_file_names
))
1826 for (p
= dir_static
.d_name
; *p
; p
++)
1827 if (*p
>= 'a' && *p
<= 'z')
1830 _strlwr (dir_static
.d_name
);
1837 open_unc_volume (const char *path
)
1843 nr
.dwScope
= RESOURCE_GLOBALNET
;
1844 nr
.dwType
= RESOURCETYPE_DISK
;
1845 nr
.dwDisplayType
= RESOURCEDISPLAYTYPE_SERVER
;
1846 nr
.dwUsage
= RESOURCEUSAGE_CONTAINER
;
1847 nr
.lpLocalName
= NULL
;
1848 nr
.lpRemoteName
= (LPSTR
)map_w32_filename (path
, NULL
);
1849 nr
.lpComment
= NULL
;
1850 nr
.lpProvider
= NULL
;
1852 result
= WNetOpenEnum(RESOURCE_GLOBALNET
, RESOURCETYPE_DISK
,
1853 RESOURCEUSAGE_CONNECTABLE
, &nr
, &henum
);
1855 if (result
== NO_ERROR
)
1858 return INVALID_HANDLE_VALUE
;
1862 read_unc_volume (HANDLE henum
, char *readbuf
, int size
)
1866 DWORD bufsize
= 512;
1871 buffer
= alloca (bufsize
);
1872 result
= WNetEnumResource (wnet_enum_handle
, &count
, buffer
, &bufsize
);
1873 if (result
!= NO_ERROR
)
1876 /* WNetEnumResource returns \\resource\share...skip forward to "share". */
1877 ptr
= ((LPNETRESOURCE
) buffer
)->lpRemoteName
;
1879 while (*ptr
&& !IS_DIRECTORY_SEP (*ptr
)) ptr
++;
1882 strncpy (readbuf
, ptr
, size
);
1887 close_unc_volume (HANDLE henum
)
1889 if (henum
!= INVALID_HANDLE_VALUE
)
1890 WNetCloseEnum (henum
);
1894 unc_volume_file_attributes (const char *path
)
1899 henum
= open_unc_volume (path
);
1900 if (henum
== INVALID_HANDLE_VALUE
)
1903 attrs
= FILE_ATTRIBUTE_READONLY
| FILE_ATTRIBUTE_DIRECTORY
;
1905 close_unc_volume (henum
);
1911 /* Shadow some MSVC runtime functions to map requests for long filenames
1912 to reasonable short names if necessary. This was originally added to
1913 permit running Emacs on NT 3.1 on a FAT partition, which doesn't support
1917 sys_access (const char * path
, int mode
)
1921 /* MSVC implementation doesn't recognize D_OK. */
1922 path
= map_w32_filename (path
, NULL
);
1923 if (is_unc_volume (path
))
1925 attributes
= unc_volume_file_attributes (path
);
1926 if (attributes
== -1) {
1931 else if ((attributes
= GetFileAttributes (path
)) == -1)
1933 /* Should try mapping GetLastError to errno; for now just indicate
1934 that path doesn't exist. */
1938 if ((mode
& X_OK
) != 0 && !is_exec (path
))
1943 if ((mode
& W_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_READONLY
) != 0)
1948 if ((mode
& D_OK
) != 0 && (attributes
& FILE_ATTRIBUTE_DIRECTORY
) == 0)
1957 sys_chdir (const char * path
)
1959 return _chdir (map_w32_filename (path
, NULL
));
1963 sys_chmod (const char * path
, int mode
)
1965 return _chmod (map_w32_filename (path
, NULL
), mode
);
1969 sys_chown (const char *path
, uid_t owner
, gid_t group
)
1971 if (sys_chmod (path
, _S_IREAD
) == -1) /* check if file exists */
1977 sys_creat (const char * path
, int mode
)
1979 return _creat (map_w32_filename (path
, NULL
), mode
);
1983 sys_fopen(const char * path
, const char * mode
)
1987 const char * mode_save
= mode
;
1989 /* Force all file handles to be non-inheritable. This is necessary to
1990 ensure child processes don't unwittingly inherit handles that might
1991 prevent future file access. */
1995 else if (mode
[0] == 'w' || mode
[0] == 'a')
1996 oflag
= O_WRONLY
| O_CREAT
| O_TRUNC
;
2000 /* Only do simplistic option parsing. */
2004 oflag
&= ~(O_RDONLY
| O_WRONLY
);
2007 else if (mode
[0] == 'b')
2012 else if (mode
[0] == 't')
2019 fd
= _open (map_w32_filename (path
, NULL
), oflag
| _O_NOINHERIT
, 0644);
2023 return _fdopen (fd
, mode_save
);
2026 /* This only works on NTFS volumes, but is useful to have. */
2028 sys_link (const char * old
, const char * new)
2032 char oldname
[MAX_PATH
], newname
[MAX_PATH
];
2034 if (old
== NULL
|| new == NULL
)
2040 strcpy (oldname
, map_w32_filename (old
, NULL
));
2041 strcpy (newname
, map_w32_filename (new, NULL
));
2043 fileh
= CreateFile (oldname
, 0, 0, NULL
, OPEN_EXISTING
,
2044 FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
2045 if (fileh
!= INVALID_HANDLE_VALUE
)
2049 /* Confusingly, the "alternate" stream name field does not apply
2050 when restoring a hard link, and instead contains the actual
2051 stream data for the link (ie. the name of the link to create).
2052 The WIN32_STREAM_ID structure before the cStreamName field is
2053 the stream header, which is then immediately followed by the
2057 WIN32_STREAM_ID wid
;
2058 WCHAR wbuffer
[MAX_PATH
]; /* extra space for link name */
2061 wlen
= MultiByteToWideChar (CP_ACP
, MB_PRECOMPOSED
, newname
, -1,
2062 data
.wid
.cStreamName
, MAX_PATH
);
2065 LPVOID context
= NULL
;
2068 data
.wid
.dwStreamId
= BACKUP_LINK
;
2069 data
.wid
.dwStreamAttributes
= 0;
2070 data
.wid
.Size
.LowPart
= wlen
* sizeof(WCHAR
);
2071 data
.wid
.Size
.HighPart
= 0;
2072 data
.wid
.dwStreamNameSize
= 0;
2074 if (BackupWrite (fileh
, (LPBYTE
)&data
,
2075 offsetof (WIN32_STREAM_ID
, cStreamName
)
2076 + data
.wid
.Size
.LowPart
,
2077 &wbytes
, FALSE
, FALSE
, &context
)
2078 && BackupWrite (fileh
, NULL
, 0, &wbytes
, TRUE
, FALSE
, &context
))
2085 /* Should try mapping GetLastError to errno; for now just
2086 indicate a general error (eg. links not supported). */
2087 errno
= EINVAL
; // perhaps EMLINK?
2091 CloseHandle (fileh
);
2100 sys_mkdir (const char * path
)
2102 return _mkdir (map_w32_filename (path
, NULL
));
2105 /* Because of long name mapping issues, we need to implement this
2106 ourselves. Also, MSVC's _mktemp returns NULL when it can't generate
2107 a unique name, instead of setting the input template to an empty
2110 Standard algorithm seems to be use pid or tid with a letter on the
2111 front (in place of the 6 X's) and cycle through the letters to find a
2112 unique name. We extend that to allow any reasonable character as the
2113 first of the 6 X's. */
2115 sys_mktemp (char * template)
2119 unsigned uid
= GetCurrentThreadId ();
2120 static char first_char
[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#";
2122 if (template == NULL
)
2124 p
= template + strlen (template);
2126 /* replace up to the last 5 X's with uid in decimal */
2127 while (--p
>= template && p
[0] == 'X' && --i
>= 0)
2129 p
[0] = '0' + uid
% 10;
2133 if (i
< 0 && p
[0] == 'X')
2138 int save_errno
= errno
;
2139 p
[0] = first_char
[i
];
2140 if (sys_access (template, 0) < 0)
2146 while (++i
< sizeof (first_char
));
2149 /* Template is badly formed or else we can't generate a unique name,
2150 so return empty string */
2156 sys_open (const char * path
, int oflag
, int mode
)
2158 const char* mpath
= map_w32_filename (path
, NULL
);
2159 /* Try to open file without _O_CREAT, to be able to write to hidden
2160 and system files. Force all file handles to be
2162 int res
= _open (mpath
, (oflag
& ~_O_CREAT
) | _O_NOINHERIT
, mode
);
2165 return _open (mpath
, oflag
| _O_NOINHERIT
, mode
);
2169 sys_rename (const char * oldname
, const char * newname
)
2172 char temp
[MAX_PATH
];
2174 /* MoveFile on Windows 95 doesn't correctly change the short file name
2175 alias in a number of circumstances (it is not easy to predict when
2176 just by looking at oldname and newname, unfortunately). In these
2177 cases, renaming through a temporary name avoids the problem.
2179 A second problem on Windows 95 is that renaming through a temp name when
2180 newname is uppercase fails (the final long name ends up in
2181 lowercase, although the short alias might be uppercase) UNLESS the
2182 long temp name is not 8.3.
2184 So, on Windows 95 we always rename through a temp name, and we make sure
2185 the temp name has a long extension to ensure correct renaming. */
2187 strcpy (temp
, map_w32_filename (oldname
, NULL
));
2189 if (os_subtype
== OS_WIN95
)
2195 oldname
= map_w32_filename (oldname
, NULL
);
2196 if (o
= strrchr (oldname
, '\\'))
2199 o
= (char *) oldname
;
2201 if (p
= strrchr (temp
, '\\'))
2208 /* Force temp name to require a manufactured 8.3 alias - this
2209 seems to make the second rename work properly. */
2210 sprintf (p
, "_.%s.%u", o
, i
);
2212 result
= rename (oldname
, temp
);
2214 /* This loop must surely terminate! */
2215 while (result
< 0 && errno
== EEXIST
);
2220 /* Emulate Unix behaviour - newname is deleted if it already exists
2221 (at least if it is a file; don't do this for directories).
2223 Since we mustn't do this if we are just changing the case of the
2224 file name (we would end up deleting the file we are trying to
2225 rename!), we let rename detect if the destination file already
2226 exists - that way we avoid the possible pitfalls of trying to
2227 determine ourselves whether two names really refer to the same
2228 file, which is not always possible in the general case. (Consider
2229 all the permutations of shared or subst'd drives, etc.) */
2231 newname
= map_w32_filename (newname
, NULL
);
2232 result
= rename (temp
, newname
);
2236 && _chmod (newname
, 0666) == 0
2237 && _unlink (newname
) == 0)
2238 result
= rename (temp
, newname
);
2244 sys_rmdir (const char * path
)
2246 return _rmdir (map_w32_filename (path
, NULL
));
2250 sys_unlink (const char * path
)
2252 path
= map_w32_filename (path
, NULL
);
2254 /* On Unix, unlink works without write permission. */
2255 _chmod (path
, 0666);
2256 return _unlink (path
);
2259 static FILETIME utc_base_ft
;
2260 static long double utc_base
;
2261 static int init
= 0;
2264 convert_time (FILETIME ft
)
2270 /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */
2279 st
.wMilliseconds
= 0;
2281 SystemTimeToFileTime (&st
, &utc_base_ft
);
2282 utc_base
= (long double) utc_base_ft
.dwHighDateTime
2283 * 4096.0L * 1024.0L * 1024.0L + utc_base_ft
.dwLowDateTime
;
2287 if (CompareFileTime (&ft
, &utc_base_ft
) < 0)
2290 ret
= (long double) ft
.dwHighDateTime
2291 * 4096.0L * 1024.0L * 1024.0L + ft
.dwLowDateTime
;
2293 return (time_t) (ret
* 1e-7L);
2297 convert_from_time_t (time_t time
, FILETIME
* pft
)
2303 /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */
2312 st
.wMilliseconds
= 0;
2314 SystemTimeToFileTime (&st
, &utc_base_ft
);
2315 utc_base
= (long double) utc_base_ft
.dwHighDateTime
2316 * 4096 * 1024 * 1024 + utc_base_ft
.dwLowDateTime
;
2320 /* time in 100ns units since 1-Jan-1601 */
2321 tmp
= (long double) time
* 1e7
+ utc_base
;
2322 pft
->dwHighDateTime
= (DWORD
) (tmp
/ (4096.0 * 1024 * 1024));
2323 pft
->dwLowDateTime
= (DWORD
) (tmp
- (4096.0 * 1024 * 1024) * pft
->dwHighDateTime
);
2327 /* No reason to keep this; faking inode values either by hashing or even
2328 using the file index from GetInformationByHandle, is not perfect and
2329 so by default Emacs doesn't use the inode values on Windows.
2330 Instead, we now determine file-truename correctly (except for
2331 possible drive aliasing etc). */
2333 /* Modified version of "PJW" algorithm (see the "Dragon" compiler book). */
2335 hashval (const unsigned char * str
)
2340 h
= (h
<< 4) + *str
++;
2346 /* Return the hash value of the canonical pathname, excluding the
2347 drive/UNC header, to get a hopefully unique inode number. */
2349 generate_inode_val (const char * name
)
2351 char fullname
[ MAX_PATH
];
2355 /* Get the truly canonical filename, if it exists. (Note: this
2356 doesn't resolve aliasing due to subst commands, or recognise hard
2358 if (!w32_get_long_filename ((char *)name
, fullname
, MAX_PATH
))
2361 parse_root (fullname
, &p
);
2362 /* Normal W32 filesystems are still case insensitive. */
2369 /* MSVC stat function can't cope with UNC names and has other bugs, so
2370 replace it with our own. This also allows us to calculate consistent
2371 inode values without hacks in the main Emacs code. */
2373 stat (const char * path
, struct stat
* buf
)
2376 WIN32_FIND_DATA wfd
;
2381 int rootdir
= FALSE
;
2383 if (path
== NULL
|| buf
== NULL
)
2389 name
= (char *) map_w32_filename (path
, &path
);
2390 /* Must be valid filename, no wild cards or other invalid
2391 characters. We use _mbspbrk to support multibyte strings that
2392 might look to strpbrk as if they included literal *, ?, and other
2393 characters mentioned below that are disallowed by Windows
2395 if (_mbspbrk (name
, "*?|<>\""))
2401 /* If name is "c:/.." or "/.." then stat "c:/" or "/". */
2402 r
= IS_DEVICE_SEP (name
[1]) ? &name
[2] : name
;
2403 if (IS_DIRECTORY_SEP (r
[0]) && r
[1] == '.' && r
[2] == '.' && r
[3] == '\0')
2408 /* Remove trailing directory separator, unless name is the root
2409 directory of a drive or UNC volume in which case ensure there
2410 is a trailing separator. */
2411 len
= strlen (name
);
2412 rootdir
= (path
>= name
+ len
- 1
2413 && (IS_DIRECTORY_SEP (*path
) || *path
== 0));
2414 name
= strcpy (alloca (len
+ 2), name
);
2416 if (is_unc_volume (name
))
2418 DWORD attrs
= unc_volume_file_attributes (name
);
2423 memset (&wfd
, 0, sizeof (wfd
));
2424 wfd
.dwFileAttributes
= attrs
;
2425 wfd
.ftCreationTime
= utc_base_ft
;
2426 wfd
.ftLastAccessTime
= utc_base_ft
;
2427 wfd
.ftLastWriteTime
= utc_base_ft
;
2428 strcpy (wfd
.cFileName
, name
);
2432 if (!IS_DIRECTORY_SEP (name
[len
-1]))
2433 strcat (name
, "\\");
2434 if (GetDriveType (name
) < 2)
2439 memset (&wfd
, 0, sizeof (wfd
));
2440 wfd
.dwFileAttributes
= FILE_ATTRIBUTE_DIRECTORY
;
2441 wfd
.ftCreationTime
= utc_base_ft
;
2442 wfd
.ftLastAccessTime
= utc_base_ft
;
2443 wfd
.ftLastWriteTime
= utc_base_ft
;
2444 strcpy (wfd
.cFileName
, name
);
2448 if (IS_DIRECTORY_SEP (name
[len
-1]))
2451 /* (This is hacky, but helps when doing file completions on
2452 network drives.) Optimize by using information available from
2453 active readdir if possible. */
2454 len
= strlen (dir_pathname
);
2455 if (IS_DIRECTORY_SEP (dir_pathname
[len
-1]))
2457 if (dir_find_handle
!= INVALID_HANDLE_VALUE
2458 && strnicmp (name
, dir_pathname
, len
) == 0
2459 && IS_DIRECTORY_SEP (name
[len
])
2460 && stricmp (name
+ len
+ 1, dir_static
.d_name
) == 0)
2462 /* This was the last entry returned by readdir. */
2463 wfd
= dir_find_data
;
2467 fh
= FindFirstFile (name
, &wfd
);
2468 if (fh
== INVALID_HANDLE_VALUE
)
2477 if (!NILP (Vw32_get_true_file_attributes
)
2478 /* No access rights required to get info. */
2479 && (fh
= CreateFile (name
, 0, 0, NULL
, OPEN_EXISTING
,
2480 FILE_FLAG_BACKUP_SEMANTICS
, NULL
))
2481 != INVALID_HANDLE_VALUE
)
2483 /* This is more accurate in terms of gettting the correct number
2484 of links, but is quite slow (it is noticeable when Emacs is
2485 making a list of file name completions). */
2486 BY_HANDLE_FILE_INFORMATION info
;
2488 if (GetFileInformationByHandle (fh
, &info
))
2490 buf
->st_nlink
= info
.nNumberOfLinks
;
2491 /* Might as well use file index to fake inode values, but this
2492 is not guaranteed to be unique unless we keep a handle open
2493 all the time (even then there are situations where it is
2494 not unique). Reputedly, there are at most 48 bits of info
2495 (on NTFS, presumably less on FAT). */
2496 fake_inode
= info
.nFileIndexLow
^ info
.nFileIndexHigh
;
2504 if (wfd
.dwFileAttributes
& FILE_ATTRIBUTE_DIRECTORY
)
2506 buf
->st_mode
= _S_IFDIR
;
2510 switch (GetFileType (fh
))
2512 case FILE_TYPE_DISK
:
2513 buf
->st_mode
= _S_IFREG
;
2515 case FILE_TYPE_PIPE
:
2516 buf
->st_mode
= _S_IFIFO
;
2518 case FILE_TYPE_CHAR
:
2519 case FILE_TYPE_UNKNOWN
:
2521 buf
->st_mode
= _S_IFCHR
;
2528 /* Don't bother to make this information more accurate. */
2529 buf
->st_mode
= (wfd
.dwFileAttributes
& FILE_ATTRIBUTE_DIRECTORY
) ?
2530 _S_IFDIR
: _S_IFREG
;
2536 /* Not sure if there is any point in this. */
2537 if (!NILP (Vw32_generate_fake_inodes
))
2538 fake_inode
= generate_inode_val (name
);
2539 else if (fake_inode
== 0)
2541 /* For want of something better, try to make everything unique. */
2542 static DWORD gen_num
= 0;
2543 fake_inode
= ++gen_num
;
2547 /* MSVC defines _ino_t to be short; other libc's might not. */
2548 if (sizeof (buf
->st_ino
) == 2)
2549 buf
->st_ino
= fake_inode
^ (fake_inode
>> 16);
2551 buf
->st_ino
= fake_inode
;
2553 /* consider files to belong to current user */
2554 buf
->st_uid
= the_passwd
.pw_uid
;
2555 buf
->st_gid
= the_passwd
.pw_gid
;
2557 /* volume_info is set indirectly by map_w32_filename */
2558 buf
->st_dev
= volume_info
.serialnum
;
2559 buf
->st_rdev
= volume_info
.serialnum
;
2562 buf
->st_size
= wfd
.nFileSizeLow
;
2564 /* Convert timestamps to Unix format. */
2565 buf
->st_mtime
= convert_time (wfd
.ftLastWriteTime
);
2566 buf
->st_atime
= convert_time (wfd
.ftLastAccessTime
);
2567 if (buf
->st_atime
== 0) buf
->st_atime
= buf
->st_mtime
;
2568 buf
->st_ctime
= convert_time (wfd
.ftCreationTime
);
2569 if (buf
->st_ctime
== 0) buf
->st_ctime
= buf
->st_mtime
;
2571 /* determine rwx permissions */
2572 if (wfd
.dwFileAttributes
& FILE_ATTRIBUTE_READONLY
)
2573 permission
= _S_IREAD
;
2575 permission
= _S_IREAD
| _S_IWRITE
;
2577 if (wfd
.dwFileAttributes
& FILE_ATTRIBUTE_DIRECTORY
)
2578 permission
|= _S_IEXEC
;
2579 else if (is_exec (name
))
2580 permission
|= _S_IEXEC
;
2582 buf
->st_mode
|= permission
| (permission
>> 3) | (permission
>> 6);
2587 /* Provide fstat and utime as well as stat for consistent handling of
2590 fstat (int desc
, struct stat
* buf
)
2592 HANDLE fh
= (HANDLE
) _get_osfhandle (desc
);
2593 BY_HANDLE_FILE_INFORMATION info
;
2597 switch (GetFileType (fh
) & ~FILE_TYPE_REMOTE
)
2599 case FILE_TYPE_DISK
:
2600 buf
->st_mode
= _S_IFREG
;
2601 if (!GetFileInformationByHandle (fh
, &info
))
2607 case FILE_TYPE_PIPE
:
2608 buf
->st_mode
= _S_IFIFO
;
2610 case FILE_TYPE_CHAR
:
2611 case FILE_TYPE_UNKNOWN
:
2613 buf
->st_mode
= _S_IFCHR
;
2615 memset (&info
, 0, sizeof (info
));
2616 info
.dwFileAttributes
= 0;
2617 info
.ftCreationTime
= utc_base_ft
;
2618 info
.ftLastAccessTime
= utc_base_ft
;
2619 info
.ftLastWriteTime
= utc_base_ft
;
2622 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_DIRECTORY
)
2623 buf
->st_mode
= _S_IFDIR
;
2625 buf
->st_nlink
= info
.nNumberOfLinks
;
2626 /* Might as well use file index to fake inode values, but this
2627 is not guaranteed to be unique unless we keep a handle open
2628 all the time (even then there are situations where it is
2629 not unique). Reputedly, there are at most 48 bits of info
2630 (on NTFS, presumably less on FAT). */
2631 fake_inode
= info
.nFileIndexLow
^ info
.nFileIndexHigh
;
2633 /* MSVC defines _ino_t to be short; other libc's might not. */
2634 if (sizeof (buf
->st_ino
) == 2)
2635 buf
->st_ino
= fake_inode
^ (fake_inode
>> 16);
2637 buf
->st_ino
= fake_inode
;
2639 /* consider files to belong to current user */
2643 buf
->st_dev
= info
.dwVolumeSerialNumber
;
2644 buf
->st_rdev
= info
.dwVolumeSerialNumber
;
2646 buf
->st_size
= info
.nFileSizeLow
;
2648 /* Convert timestamps to Unix format. */
2649 buf
->st_mtime
= convert_time (info
.ftLastWriteTime
);
2650 buf
->st_atime
= convert_time (info
.ftLastAccessTime
);
2651 if (buf
->st_atime
== 0) buf
->st_atime
= buf
->st_mtime
;
2652 buf
->st_ctime
= convert_time (info
.ftCreationTime
);
2653 if (buf
->st_ctime
== 0) buf
->st_ctime
= buf
->st_mtime
;
2655 /* determine rwx permissions */
2656 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_READONLY
)
2657 permission
= _S_IREAD
;
2659 permission
= _S_IREAD
| _S_IWRITE
;
2661 if (info
.dwFileAttributes
& FILE_ATTRIBUTE_DIRECTORY
)
2662 permission
|= _S_IEXEC
;
2665 #if 0 /* no way of knowing the filename */
2666 char * p
= strrchr (name
, '.');
2668 (stricmp (p
, ".exe") == 0 ||
2669 stricmp (p
, ".com") == 0 ||
2670 stricmp (p
, ".bat") == 0 ||
2671 stricmp (p
, ".cmd") == 0))
2672 permission
|= _S_IEXEC
;
2676 buf
->st_mode
|= permission
| (permission
>> 3) | (permission
>> 6);
2682 utime (const char *name
, struct utimbuf
*times
)
2684 struct utimbuf deftime
;
2691 deftime
.modtime
= deftime
.actime
= time (NULL
);
2695 /* Need write access to set times. */
2696 fh
= CreateFile (name
, GENERIC_WRITE
, FILE_SHARE_READ
| FILE_SHARE_WRITE
,
2697 0, OPEN_EXISTING
, 0, NULL
);
2700 convert_from_time_t (times
->actime
, &atime
);
2701 convert_from_time_t (times
->modtime
, &mtime
);
2702 if (!SetFileTime (fh
, NULL
, &atime
, &mtime
))
2720 /* Wrappers for winsock functions to map between our file descriptors
2721 and winsock's handles; also set h_errno for convenience.
2723 To allow Emacs to run on systems which don't have winsock support
2724 installed, we dynamically link to winsock on startup if present, and
2725 otherwise provide the minimum necessary functionality
2726 (eg. gethostname). */
2728 /* function pointers for relevant socket functions */
2729 int (PASCAL
*pfn_WSAStartup
) (WORD wVersionRequired
, LPWSADATA lpWSAData
);
2730 void (PASCAL
*pfn_WSASetLastError
) (int iError
);
2731 int (PASCAL
*pfn_WSAGetLastError
) (void);
2732 int (PASCAL
*pfn_WSAEventSelect
) (SOCKET s
, HANDLE hEventObject
, long lNetworkEvents
);
2733 HANDLE (PASCAL
*pfn_WSACreateEvent
) (void);
2734 int (PASCAL
*pfn_WSACloseEvent
) (HANDLE hEvent
);
2735 int (PASCAL
*pfn_socket
) (int af
, int type
, int protocol
);
2736 int (PASCAL
*pfn_bind
) (SOCKET s
, const struct sockaddr
*addr
, int namelen
);
2737 int (PASCAL
*pfn_connect
) (SOCKET s
, const struct sockaddr
*addr
, int namelen
);
2738 int (PASCAL
*pfn_ioctlsocket
) (SOCKET s
, long cmd
, u_long
*argp
);
2739 int (PASCAL
*pfn_recv
) (SOCKET s
, char * buf
, int len
, int flags
);
2740 int (PASCAL
*pfn_send
) (SOCKET s
, const char * buf
, int len
, int flags
);
2741 int (PASCAL
*pfn_closesocket
) (SOCKET s
);
2742 int (PASCAL
*pfn_shutdown
) (SOCKET s
, int how
);
2743 int (PASCAL
*pfn_WSACleanup
) (void);
2745 u_short (PASCAL
*pfn_htons
) (u_short hostshort
);
2746 u_short (PASCAL
*pfn_ntohs
) (u_short netshort
);
2747 unsigned long (PASCAL
*pfn_inet_addr
) (const char * cp
);
2748 int (PASCAL
*pfn_gethostname
) (char * name
, int namelen
);
2749 struct hostent
* (PASCAL
*pfn_gethostbyname
) (const char * name
);
2750 struct servent
* (PASCAL
*pfn_getservbyname
) (const char * name
, const char * proto
);
2751 int (PASCAL
*pfn_getpeername
) (SOCKET s
, struct sockaddr
*addr
, int * namelen
);
2752 int (PASCAL
*pfn_setsockopt
) (SOCKET s
, int level
, int optname
,
2753 const char * optval
, int optlen
);
2754 int (PASCAL
*pfn_listen
) (SOCKET s
, int backlog
);
2755 int (PASCAL
*pfn_getsockname
) (SOCKET s
, struct sockaddr
* name
,
2757 SOCKET (PASCAL
*pfn_accept
) (SOCKET s
, struct sockaddr
* addr
, int * addrlen
);
2758 int (PASCAL
*pfn_recvfrom
) (SOCKET s
, char * buf
, int len
, int flags
,
2759 struct sockaddr
* from
, int * fromlen
);
2760 int (PASCAL
*pfn_sendto
) (SOCKET s
, const char * buf
, int len
, int flags
,
2761 const struct sockaddr
* to
, int tolen
);
2763 /* SetHandleInformation is only needed to make sockets non-inheritable. */
2764 BOOL (WINAPI
*pfn_SetHandleInformation
) (HANDLE object
, DWORD mask
, DWORD flags
);
2765 #ifndef HANDLE_FLAG_INHERIT
2766 #define HANDLE_FLAG_INHERIT 1
2770 static int winsock_inuse
;
2775 if (winsock_lib
!= NULL
&& winsock_inuse
== 0)
2777 /* Not sure what would cause WSAENETDOWN, or even if it can happen
2778 after WSAStartup returns successfully, but it seems reasonable
2779 to allow unloading winsock anyway in that case. */
2780 if (pfn_WSACleanup () == 0 ||
2781 pfn_WSAGetLastError () == WSAENETDOWN
)
2783 if (FreeLibrary (winsock_lib
))
2792 init_winsock (int load_now
)
2794 WSADATA winsockData
;
2796 if (winsock_lib
!= NULL
)
2799 pfn_SetHandleInformation
= NULL
;
2800 pfn_SetHandleInformation
2801 = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"),
2802 "SetHandleInformation");
2804 winsock_lib
= LoadLibrary ("Ws2_32.dll");
2806 if (winsock_lib
!= NULL
)
2808 /* dynamically link to socket functions */
2810 #define LOAD_PROC(fn) \
2811 if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \
2814 LOAD_PROC( WSAStartup
);
2815 LOAD_PROC( WSASetLastError
);
2816 LOAD_PROC( WSAGetLastError
);
2817 LOAD_PROC( WSAEventSelect
);
2818 LOAD_PROC( WSACreateEvent
);
2819 LOAD_PROC( WSACloseEvent
);
2820 LOAD_PROC( socket
);
2822 LOAD_PROC( connect
);
2823 LOAD_PROC( ioctlsocket
);
2826 LOAD_PROC( closesocket
);
2827 LOAD_PROC( shutdown
);
2830 LOAD_PROC( inet_addr
);
2831 LOAD_PROC( gethostname
);
2832 LOAD_PROC( gethostbyname
);
2833 LOAD_PROC( getservbyname
);
2834 LOAD_PROC( getpeername
);
2835 LOAD_PROC( WSACleanup
);
2836 LOAD_PROC( setsockopt
);
2837 LOAD_PROC( listen
);
2838 LOAD_PROC( getsockname
);
2839 LOAD_PROC( accept
);
2840 LOAD_PROC( recvfrom
);
2841 LOAD_PROC( sendto
);
2844 /* specify version 1.1 of winsock */
2845 if (pfn_WSAStartup (0x101, &winsockData
) == 0)
2847 if (winsockData
.wVersion
!= 0x101)
2852 /* Report that winsock exists and is usable, but leave
2853 socket functions disabled. I am assuming that calling
2854 WSAStartup does not require any network interaction,
2855 and in particular does not cause or require a dial-up
2856 connection to be established. */
2859 FreeLibrary (winsock_lib
);
2867 FreeLibrary (winsock_lib
);
2877 /* function to set h_errno for compatability; map winsock error codes to
2878 normal system codes where they overlap (non-overlapping definitions
2879 are already in <sys/socket.h> */
2883 if (winsock_lib
== NULL
)
2886 h_errno
= pfn_WSAGetLastError ();
2890 case WSAEACCES
: h_errno
= EACCES
; break;
2891 case WSAEBADF
: h_errno
= EBADF
; break;
2892 case WSAEFAULT
: h_errno
= EFAULT
; break;
2893 case WSAEINTR
: h_errno
= EINTR
; break;
2894 case WSAEINVAL
: h_errno
= EINVAL
; break;
2895 case WSAEMFILE
: h_errno
= EMFILE
; break;
2896 case WSAENAMETOOLONG
: h_errno
= ENAMETOOLONG
; break;
2897 case WSAENOTEMPTY
: h_errno
= ENOTEMPTY
; break;
2905 if (h_errno
== 0 && winsock_lib
!= NULL
)
2906 pfn_WSASetLastError (0);
2909 /* Extend strerror to handle the winsock-specific error codes. */
2913 } _wsa_errlist
[] = {
2914 WSAEINTR
, "Interrupted function call",
2915 WSAEBADF
, "Bad file descriptor",
2916 WSAEACCES
, "Permission denied",
2917 WSAEFAULT
, "Bad address",
2918 WSAEINVAL
, "Invalid argument",
2919 WSAEMFILE
, "Too many open files",
2921 WSAEWOULDBLOCK
, "Resource temporarily unavailable",
2922 WSAEINPROGRESS
, "Operation now in progress",
2923 WSAEALREADY
, "Operation already in progress",
2924 WSAENOTSOCK
, "Socket operation on non-socket",
2925 WSAEDESTADDRREQ
, "Destination address required",
2926 WSAEMSGSIZE
, "Message too long",
2927 WSAEPROTOTYPE
, "Protocol wrong type for socket",
2928 WSAENOPROTOOPT
, "Bad protocol option",
2929 WSAEPROTONOSUPPORT
, "Protocol not supported",
2930 WSAESOCKTNOSUPPORT
, "Socket type not supported",
2931 WSAEOPNOTSUPP
, "Operation not supported",
2932 WSAEPFNOSUPPORT
, "Protocol family not supported",
2933 WSAEAFNOSUPPORT
, "Address family not supported by protocol family",
2934 WSAEADDRINUSE
, "Address already in use",
2935 WSAEADDRNOTAVAIL
, "Cannot assign requested address",
2936 WSAENETDOWN
, "Network is down",
2937 WSAENETUNREACH
, "Network is unreachable",
2938 WSAENETRESET
, "Network dropped connection on reset",
2939 WSAECONNABORTED
, "Software caused connection abort",
2940 WSAECONNRESET
, "Connection reset by peer",
2941 WSAENOBUFS
, "No buffer space available",
2942 WSAEISCONN
, "Socket is already connected",
2943 WSAENOTCONN
, "Socket is not connected",
2944 WSAESHUTDOWN
, "Cannot send after socket shutdown",
2945 WSAETOOMANYREFS
, "Too many references", /* not sure */
2946 WSAETIMEDOUT
, "Connection timed out",
2947 WSAECONNREFUSED
, "Connection refused",
2948 WSAELOOP
, "Network loop", /* not sure */
2949 WSAENAMETOOLONG
, "Name is too long",
2950 WSAEHOSTDOWN
, "Host is down",
2951 WSAEHOSTUNREACH
, "No route to host",
2952 WSAENOTEMPTY
, "Buffer not empty", /* not sure */
2953 WSAEPROCLIM
, "Too many processes",
2954 WSAEUSERS
, "Too many users", /* not sure */
2955 WSAEDQUOT
, "Double quote in host name", /* really not sure */
2956 WSAESTALE
, "Data is stale", /* not sure */
2957 WSAEREMOTE
, "Remote error", /* not sure */
2959 WSASYSNOTREADY
, "Network subsystem is unavailable",
2960 WSAVERNOTSUPPORTED
, "WINSOCK.DLL version out of range",
2961 WSANOTINITIALISED
, "Winsock not initialized successfully",
2962 WSAEDISCON
, "Graceful shutdown in progress",
2964 WSAENOMORE
, "No more operations allowed", /* not sure */
2965 WSAECANCELLED
, "Operation cancelled", /* not sure */
2966 WSAEINVALIDPROCTABLE
, "Invalid procedure table from service provider",
2967 WSAEINVALIDPROVIDER
, "Invalid service provider version number",
2968 WSAEPROVIDERFAILEDINIT
, "Unable to initialize a service provider",
2969 WSASYSCALLFAILURE
, "System call failure",
2970 WSASERVICE_NOT_FOUND
, "Service not found", /* not sure */
2971 WSATYPE_NOT_FOUND
, "Class type not found",
2972 WSA_E_NO_MORE
, "No more resources available", /* really not sure */
2973 WSA_E_CANCELLED
, "Operation already cancelled", /* really not sure */
2974 WSAEREFUSED
, "Operation refused", /* not sure */
2977 WSAHOST_NOT_FOUND
, "Host not found",
2978 WSATRY_AGAIN
, "Authoritative host not found during name lookup",
2979 WSANO_RECOVERY
, "Non-recoverable error during name lookup",
2980 WSANO_DATA
, "Valid name, no data record of requested type",
2986 sys_strerror(int error_no
)
2989 static char unknown_msg
[40];
2991 if (error_no
>= 0 && error_no
< sys_nerr
)
2992 return sys_errlist
[error_no
];
2994 for (i
= 0; _wsa_errlist
[i
].errnum
>= 0; i
++)
2995 if (_wsa_errlist
[i
].errnum
== error_no
)
2996 return _wsa_errlist
[i
].msg
;
2998 sprintf(unknown_msg
, "Unidentified error: %d", error_no
);
3002 /* [andrewi 3-May-96] I've had conflicting results using both methods,
3003 but I believe the method of keeping the socket handle separate (and
3004 insuring it is not inheritable) is the correct one. */
3006 //#define SOCK_REPLACE_HANDLE
3008 #ifdef SOCK_REPLACE_HANDLE
3009 #define SOCK_HANDLE(fd) ((SOCKET) _get_osfhandle (fd))
3011 #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd)
3014 int socket_to_fd (SOCKET s
);
3017 sys_socket(int af
, int type
, int protocol
)
3021 if (winsock_lib
== NULL
)
3024 return INVALID_SOCKET
;
3029 /* call the real socket function */
3030 s
= pfn_socket (af
, type
, protocol
);
3032 if (s
!= INVALID_SOCKET
)
3033 return socket_to_fd (s
);
3039 /* Convert a SOCKET to a file descriptor. */
3041 socket_to_fd (SOCKET s
)
3046 /* Although under NT 3.5 _open_osfhandle will accept a socket
3047 handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT,
3048 that does not work under NT 3.1. However, we can get the same
3049 effect by using a backdoor function to replace an existing
3050 descriptor handle with the one we want. */
3052 /* allocate a file descriptor (with appropriate flags) */
3053 fd
= _open ("NUL:", _O_RDWR
);
3056 #ifdef SOCK_REPLACE_HANDLE
3057 /* now replace handle to NUL with our socket handle */
3058 CloseHandle ((HANDLE
) _get_osfhandle (fd
));
3060 _set_osfhnd (fd
, s
);
3061 /* setmode (fd, _O_BINARY); */
3063 /* Make a non-inheritable copy of the socket handle. Note
3064 that it is possible that sockets aren't actually kernel
3065 handles, which appears to be the case on Windows 9x when
3066 the MS Proxy winsock client is installed. */
3068 /* Apparently there is a bug in NT 3.51 with some service
3069 packs, which prevents using DuplicateHandle to make a
3070 socket handle non-inheritable (causes WSACleanup to
3071 hang). The work-around is to use SetHandleInformation
3072 instead if it is available and implemented. */
3073 if (pfn_SetHandleInformation
)
3075 pfn_SetHandleInformation ((HANDLE
) s
, HANDLE_FLAG_INHERIT
, 0);
3079 HANDLE parent
= GetCurrentProcess ();
3080 HANDLE new_s
= INVALID_HANDLE_VALUE
;
3082 if (DuplicateHandle (parent
,
3088 DUPLICATE_SAME_ACCESS
))
3090 /* It is possible that DuplicateHandle succeeds even
3091 though the socket wasn't really a kernel handle,
3092 because a real handle has the same value. So
3093 test whether the new handle really is a socket. */
3094 long nonblocking
= 0;
3095 if (pfn_ioctlsocket ((SOCKET
) new_s
, FIONBIO
, &nonblocking
) == 0)
3097 pfn_closesocket (s
);
3102 CloseHandle (new_s
);
3107 fd_info
[fd
].hnd
= (HANDLE
) s
;
3110 /* set our own internal flags */
3111 fd_info
[fd
].flags
= FILE_SOCKET
| FILE_BINARY
| FILE_READ
| FILE_WRITE
;
3117 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
3119 /* attach child_process to fd_info */
3120 if (fd_info
[ fd
].cp
!= NULL
)
3122 DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd
));
3126 fd_info
[ fd
].cp
= cp
;
3129 winsock_inuse
++; /* count open sockets */
3136 pfn_closesocket (s
);
3143 sys_bind (int s
, const struct sockaddr
* addr
, int namelen
)
3145 if (winsock_lib
== NULL
)
3148 return SOCKET_ERROR
;
3152 if (fd_info
[s
].flags
& FILE_SOCKET
)
3154 int rc
= pfn_bind (SOCK_HANDLE (s
), addr
, namelen
);
3155 if (rc
== SOCKET_ERROR
)
3160 return SOCKET_ERROR
;
3165 sys_connect (int s
, const struct sockaddr
* name
, int namelen
)
3167 if (winsock_lib
== NULL
)
3170 return SOCKET_ERROR
;
3174 if (fd_info
[s
].flags
& FILE_SOCKET
)
3176 int rc
= pfn_connect (SOCK_HANDLE (s
), name
, namelen
);
3177 if (rc
== SOCKET_ERROR
)
3182 return SOCKET_ERROR
;
3186 sys_htons (u_short hostshort
)
3188 return (winsock_lib
!= NULL
) ?
3189 pfn_htons (hostshort
) : hostshort
;
3193 sys_ntohs (u_short netshort
)
3195 return (winsock_lib
!= NULL
) ?
3196 pfn_ntohs (netshort
) : netshort
;
3200 sys_inet_addr (const char * cp
)
3202 return (winsock_lib
!= NULL
) ?
3203 pfn_inet_addr (cp
) : INADDR_NONE
;
3207 sys_gethostname (char * name
, int namelen
)
3209 if (winsock_lib
!= NULL
)
3210 return pfn_gethostname (name
, namelen
);
3212 if (namelen
> MAX_COMPUTERNAME_LENGTH
)
3213 return !GetComputerName (name
, (DWORD
*)&namelen
);
3216 return SOCKET_ERROR
;
3220 sys_gethostbyname(const char * name
)
3222 struct hostent
* host
;
3224 if (winsock_lib
== NULL
)
3231 host
= pfn_gethostbyname (name
);
3238 sys_getservbyname(const char * name
, const char * proto
)
3240 struct servent
* serv
;
3242 if (winsock_lib
== NULL
)
3249 serv
= pfn_getservbyname (name
, proto
);
3256 sys_getpeername (int s
, struct sockaddr
*addr
, int * namelen
)
3258 if (winsock_lib
== NULL
)
3261 return SOCKET_ERROR
;
3265 if (fd_info
[s
].flags
& FILE_SOCKET
)
3267 int rc
= pfn_getpeername (SOCK_HANDLE (s
), addr
, namelen
);
3268 if (rc
== SOCKET_ERROR
)
3273 return SOCKET_ERROR
;
3278 sys_shutdown (int s
, int how
)
3280 if (winsock_lib
== NULL
)
3283 return SOCKET_ERROR
;
3287 if (fd_info
[s
].flags
& FILE_SOCKET
)
3289 int rc
= pfn_shutdown (SOCK_HANDLE (s
), how
);
3290 if (rc
== SOCKET_ERROR
)
3295 return SOCKET_ERROR
;
3299 sys_setsockopt (int s
, int level
, int optname
, const void * optval
, int optlen
)
3301 if (winsock_lib
== NULL
)
3304 return SOCKET_ERROR
;
3308 if (fd_info
[s
].flags
& FILE_SOCKET
)
3310 int rc
= pfn_setsockopt (SOCK_HANDLE (s
), level
, optname
,
3311 (const char *)optval
, optlen
);
3312 if (rc
== SOCKET_ERROR
)
3317 return SOCKET_ERROR
;
3321 sys_listen (int s
, int backlog
)
3323 if (winsock_lib
== NULL
)
3326 return SOCKET_ERROR
;
3330 if (fd_info
[s
].flags
& FILE_SOCKET
)
3332 int rc
= pfn_listen (SOCK_HANDLE (s
), backlog
);
3333 if (rc
== SOCKET_ERROR
)
3336 fd_info
[s
].flags
|= FILE_LISTEN
;
3340 return SOCKET_ERROR
;
3344 sys_getsockname (int s
, struct sockaddr
* name
, int * namelen
)
3346 if (winsock_lib
== NULL
)
3349 return SOCKET_ERROR
;
3353 if (fd_info
[s
].flags
& FILE_SOCKET
)
3355 int rc
= pfn_getsockname (SOCK_HANDLE (s
), name
, namelen
);
3356 if (rc
== SOCKET_ERROR
)
3361 return SOCKET_ERROR
;
3365 sys_accept (int s
, struct sockaddr
* addr
, int * addrlen
)
3367 if (winsock_lib
== NULL
)
3374 if (fd_info
[s
].flags
& FILE_LISTEN
)
3376 SOCKET t
= pfn_accept (SOCK_HANDLE (s
), addr
, addrlen
);
3378 if (t
== INVALID_SOCKET
)
3381 fd
= socket_to_fd (t
);
3383 fd_info
[s
].cp
->status
= STATUS_READ_ACKNOWLEDGED
;
3384 ResetEvent (fd_info
[s
].cp
->char_avail
);
3392 sys_recvfrom (int s
, char * buf
, int len
, int flags
,
3393 struct sockaddr
* from
, int * fromlen
)
3395 if (winsock_lib
== NULL
)
3398 return SOCKET_ERROR
;
3402 if (fd_info
[s
].flags
& FILE_SOCKET
)
3404 int rc
= pfn_recvfrom (SOCK_HANDLE (s
), buf
, len
, flags
, from
, fromlen
);
3405 if (rc
== SOCKET_ERROR
)
3410 return SOCKET_ERROR
;
3414 sys_sendto (int s
, const char * buf
, int len
, int flags
,
3415 const struct sockaddr
* to
, int tolen
)
3417 if (winsock_lib
== NULL
)
3420 return SOCKET_ERROR
;
3424 if (fd_info
[s
].flags
& FILE_SOCKET
)
3426 int rc
= pfn_sendto (SOCK_HANDLE (s
), buf
, len
, flags
, to
, tolen
);
3427 if (rc
== SOCKET_ERROR
)
3432 return SOCKET_ERROR
;
3435 /* Windows does not have an fcntl function. Provide an implementation
3436 solely for making sockets non-blocking. */
3438 fcntl (int s
, int cmd
, int options
)
3440 if (winsock_lib
== NULL
)
3447 if (fd_info
[s
].flags
& FILE_SOCKET
)
3449 if (cmd
== F_SETFL
&& options
== O_NDELAY
)
3451 unsigned long nblock
= 1;
3452 int rc
= pfn_ioctlsocket (SOCK_HANDLE (s
), FIONBIO
, &nblock
);
3453 if (rc
== SOCKET_ERROR
)
3455 /* Keep track of the fact that we set this to non-blocking. */
3456 fd_info
[s
].flags
|= FILE_NDELAY
;
3462 return SOCKET_ERROR
;
3466 return SOCKET_ERROR
;
3469 #endif /* HAVE_SOCKETS */
3472 /* Shadow main io functions: we need to handle pipes and sockets more
3473 intelligently, and implement non-blocking mode as well. */
3486 if (fd
< MAXDESC
&& fd_info
[fd
].cp
)
3488 child_process
* cp
= fd_info
[fd
].cp
;
3490 fd_info
[fd
].cp
= NULL
;
3492 if (CHILD_ACTIVE (cp
))
3494 /* if last descriptor to active child_process then cleanup */
3496 for (i
= 0; i
< MAXDESC
; i
++)
3500 if (fd_info
[i
].cp
== cp
)
3506 if (fd_info
[fd
].flags
& FILE_SOCKET
)
3508 #ifndef SOCK_REPLACE_HANDLE
3509 if (winsock_lib
== NULL
) abort ();
3511 pfn_shutdown (SOCK_HANDLE (fd
), 2);
3512 rc
= pfn_closesocket (SOCK_HANDLE (fd
));
3514 winsock_inuse
--; /* count open sockets */
3522 /* Note that sockets do not need special treatment here (at least on
3523 NT and Windows 95 using the standard tcp/ip stacks) - it appears that
3524 closesocket is equivalent to CloseHandle, which is to be expected
3525 because socket handles are fully fledged kernel handles. */
3528 if (rc
== 0 && fd
< MAXDESC
)
3529 fd_info
[fd
].flags
= 0;
3540 if (new_fd
>= 0 && new_fd
< MAXDESC
)
3542 /* duplicate our internal info as well */
3543 fd_info
[new_fd
] = fd_info
[fd
];
3550 sys_dup2 (int src
, int dst
)
3554 if (dst
< 0 || dst
>= MAXDESC
)
3560 /* make sure we close the destination first if it's a pipe or socket */
3561 if (src
!= dst
&& fd_info
[dst
].flags
!= 0)
3564 rc
= _dup2 (src
, dst
);
3567 /* duplicate our internal info as well */
3568 fd_info
[dst
] = fd_info
[src
];
3573 /* Unix pipe() has only one arg */
3575 sys_pipe (int * phandles
)
3580 /* make pipe handles non-inheritable; when we spawn a child, we
3581 replace the relevant handle with an inheritable one. Also put
3582 pipes into binary mode; we will do text mode translation ourselves
3584 rc
= _pipe (phandles
, 0, _O_NOINHERIT
| _O_BINARY
);
3588 /* Protect against overflow, since Windows can open more handles than
3589 our fd_info array has room for. */
3590 if (phandles
[0] >= MAXDESC
|| phandles
[1] >= MAXDESC
)
3592 _close (phandles
[0]);
3593 _close (phandles
[1]);
3598 flags
= FILE_PIPE
| FILE_READ
| FILE_BINARY
;
3599 fd_info
[phandles
[0]].flags
= flags
;
3601 flags
= FILE_PIPE
| FILE_WRITE
| FILE_BINARY
;
3602 fd_info
[phandles
[1]].flags
= flags
;
3610 extern int w32_pipe_read_delay
;
3612 /* Function to do blocking read of one byte, needed to implement
3613 select. It is only allowed on sockets and pipes. */
3615 _sys_read_ahead (int fd
)
3620 if (fd
< 0 || fd
>= MAXDESC
)
3621 return STATUS_READ_ERROR
;
3623 cp
= fd_info
[fd
].cp
;
3625 if (cp
== NULL
|| cp
->fd
!= fd
|| cp
->status
!= STATUS_READ_READY
)
3626 return STATUS_READ_ERROR
;
3628 if ((fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SOCKET
)) == 0
3629 || (fd_info
[fd
].flags
& FILE_READ
) == 0)
3631 DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe or socket!\n", fd
));
3635 cp
->status
= STATUS_READ_IN_PROGRESS
;
3637 if (fd_info
[fd
].flags
& FILE_PIPE
)
3639 rc
= _read (fd
, &cp
->chr
, sizeof (char));
3641 /* Give subprocess time to buffer some more output for us before
3642 reporting that input is available; we need this because Windows 95
3643 connects DOS programs to pipes by making the pipe appear to be
3644 the normal console stdout - as a result most DOS programs will
3645 write to stdout without buffering, ie. one character at a
3646 time. Even some W32 programs do this - "dir" in a command
3647 shell on NT is very slow if we don't do this. */
3650 int wait
= w32_pipe_read_delay
;
3656 /* Yield remainder of our time slice, effectively giving a
3657 temporary priority boost to the child process. */
3662 else if (fd_info
[fd
].flags
& FILE_SOCKET
)
3664 unsigned long nblock
= 0;
3665 /* We always want this to block, so temporarily disable NDELAY. */
3666 if (fd_info
[fd
].flags
& FILE_NDELAY
)
3667 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
3669 rc
= pfn_recv (SOCK_HANDLE (fd
), &cp
->chr
, sizeof (char), 0);
3671 if (fd_info
[fd
].flags
& FILE_NDELAY
)
3674 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
3679 if (rc
== sizeof (char))
3680 cp
->status
= STATUS_READ_SUCCEEDED
;
3682 cp
->status
= STATUS_READ_FAILED
;
3688 _sys_wait_accept (int fd
)
3694 if (fd
< 0 || fd
>= MAXDESC
)
3695 return STATUS_READ_ERROR
;
3697 cp
= fd_info
[fd
].cp
;
3699 if (cp
== NULL
|| cp
->fd
!= fd
|| cp
->status
!= STATUS_READ_READY
)
3700 return STATUS_READ_ERROR
;
3702 cp
->status
= STATUS_READ_FAILED
;
3704 hEv
= pfn_WSACreateEvent ();
3705 rc
= pfn_WSAEventSelect (SOCK_HANDLE (fd
), hEv
, FD_ACCEPT
);
3706 if (rc
!= SOCKET_ERROR
)
3708 rc
= WaitForSingleObject (hEv
, INFINITE
);
3709 pfn_WSAEventSelect (SOCK_HANDLE (fd
), NULL
, 0);
3710 if (rc
== WAIT_OBJECT_0
)
3711 cp
->status
= STATUS_READ_SUCCEEDED
;
3713 pfn_WSACloseEvent (hEv
);
3719 sys_read (int fd
, char * buffer
, unsigned int count
)
3724 char * orig_buffer
= buffer
;
3732 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SOCKET
))
3734 child_process
*cp
= fd_info
[fd
].cp
;
3736 if ((fd_info
[fd
].flags
& FILE_READ
) == 0)
3744 /* re-read CR carried over from last read */
3745 if (fd_info
[fd
].flags
& FILE_LAST_CR
)
3747 if (fd_info
[fd
].flags
& FILE_BINARY
) abort ();
3751 fd_info
[fd
].flags
&= ~FILE_LAST_CR
;
3754 /* presence of a child_process structure means we are operating in
3755 non-blocking mode - otherwise we just call _read directly.
3756 Note that the child_process structure might be missing because
3757 reap_subprocess has been called; in this case the pipe is
3758 already broken, so calling _read on it is okay. */
3761 int current_status
= cp
->status
;
3763 switch (current_status
)
3765 case STATUS_READ_FAILED
:
3766 case STATUS_READ_ERROR
:
3767 /* report normal EOF if nothing in buffer */
3769 fd_info
[fd
].flags
|= FILE_AT_EOF
;
3772 case STATUS_READ_READY
:
3773 case STATUS_READ_IN_PROGRESS
:
3774 DebPrint (("sys_read called when read is in progress\n"));
3775 errno
= EWOULDBLOCK
;
3778 case STATUS_READ_SUCCEEDED
:
3779 /* consume read-ahead char */
3780 *buffer
++ = cp
->chr
;
3783 cp
->status
= STATUS_READ_ACKNOWLEDGED
;
3784 ResetEvent (cp
->char_avail
);
3786 case STATUS_READ_ACKNOWLEDGED
:
3790 DebPrint (("sys_read: bad status %d\n", current_status
));
3795 if (fd_info
[fd
].flags
& FILE_PIPE
)
3797 PeekNamedPipe ((HANDLE
) _get_osfhandle (fd
), NULL
, 0, NULL
, &waiting
, NULL
);
3798 to_read
= min (waiting
, (DWORD
) count
);
3801 nchars
+= _read (fd
, buffer
, to_read
);
3804 else /* FILE_SOCKET */
3806 if (winsock_lib
== NULL
) abort ();
3808 /* do the equivalent of a non-blocking read */
3809 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONREAD
, &waiting
);
3810 if (waiting
== 0 && nchars
== 0)
3812 h_errno
= errno
= EWOULDBLOCK
;
3818 /* always use binary mode for sockets */
3819 int res
= pfn_recv (SOCK_HANDLE (fd
), buffer
, count
, 0);
3820 if (res
== SOCKET_ERROR
)
3822 DebPrint(("sys_read.recv failed with error %d on socket %ld\n",
3823 pfn_WSAGetLastError (), SOCK_HANDLE (fd
)));
3834 int nread
= _read (fd
, buffer
, count
);
3837 else if (nchars
== 0)
3842 fd_info
[fd
].flags
|= FILE_AT_EOF
;
3843 /* Perform text mode translation if required. */
3844 else if ((fd_info
[fd
].flags
& FILE_BINARY
) == 0)
3846 nchars
= crlf_to_lf (nchars
, orig_buffer
);
3847 /* If buffer contains only CR, return that. To be absolutely
3848 sure we should attempt to read the next char, but in
3849 practice a CR to be followed by LF would not appear by
3850 itself in the buffer. */
3851 if (nchars
> 1 && orig_buffer
[nchars
- 1] == 0x0d)
3853 fd_info
[fd
].flags
|= FILE_LAST_CR
;
3859 nchars
= _read (fd
, buffer
, count
);
3864 /* For now, don't bother with a non-blocking mode */
3866 sys_write (int fd
, const void * buffer
, unsigned int count
)
3876 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& (FILE_PIPE
| FILE_SOCKET
))
3878 if ((fd_info
[fd
].flags
& FILE_WRITE
) == 0)
3884 /* Perform text mode translation if required. */
3885 if ((fd_info
[fd
].flags
& FILE_BINARY
) == 0)
3887 char * tmpbuf
= alloca (count
* 2);
3888 unsigned char * src
= (void *)buffer
;
3889 unsigned char * dst
= tmpbuf
;
3894 unsigned char *next
;
3895 /* copy next line or remaining bytes */
3896 next
= _memccpy (dst
, src
, '\n', nbytes
);
3899 /* copied one line ending with '\n' */
3900 int copied
= next
- dst
;
3903 /* insert '\r' before '\n' */
3910 /* copied remaining partial line -> now finished */
3918 if (fd
< MAXDESC
&& fd_info
[fd
].flags
& FILE_SOCKET
)
3920 unsigned long nblock
= 0;
3921 if (winsock_lib
== NULL
) abort ();
3923 /* TODO: implement select() properly so non-blocking I/O works. */
3924 /* For now, make sure the write blocks. */
3925 if (fd_info
[fd
].flags
& FILE_NDELAY
)
3926 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
3928 nchars
= pfn_send (SOCK_HANDLE (fd
), buffer
, count
, 0);
3930 /* Set the socket back to non-blocking if it was before,
3931 for other operations that support it. */
3932 if (fd_info
[fd
].flags
& FILE_NDELAY
)
3935 pfn_ioctlsocket (SOCK_HANDLE (fd
), FIONBIO
, &nblock
);
3938 if (nchars
== SOCKET_ERROR
)
3940 DebPrint(("sys_write.send failed with error %d on socket %ld\n",
3941 pfn_WSAGetLastError (), SOCK_HANDLE (fd
)));
3947 nchars
= _write (fd
, buffer
, count
);
3953 check_windows_init_file ()
3955 extern int noninteractive
, inhibit_window_system
;
3957 /* A common indication that Emacs is not installed properly is when
3958 it cannot find the Windows installation file. If this file does
3959 not exist in the expected place, tell the user. */
3961 if (!noninteractive
&& !inhibit_window_system
)
3963 extern Lisp_Object Vwindow_system
, Vload_path
, Qfile_exists_p
;
3964 Lisp_Object objs
[2];
3965 Lisp_Object full_load_path
;
3966 Lisp_Object init_file
;
3969 objs
[0] = Vload_path
;
3970 objs
[1] = decode_env_path (0, (getenv ("EMACSLOADPATH")));
3971 full_load_path
= Fappend (2, objs
);
3972 init_file
= build_string ("term/w32-win");
3973 fd
= openp (full_load_path
, init_file
, Fget_load_suffixes (), NULL
, Qnil
);
3976 Lisp_Object load_path_print
= Fprin1_to_string (full_load_path
, Qnil
);
3977 char *init_file_name
= SDATA (init_file
);
3978 char *load_path
= SDATA (load_path_print
);
3979 char *buffer
= alloca (1024
3980 + strlen (init_file_name
)
3981 + strlen (load_path
));
3984 "The Emacs Windows initialization file \"%s.el\" "
3985 "could not be found in your Emacs installation. "
3986 "Emacs checked the following directories for this file:\n"
3988 "When Emacs cannot find this file, it usually means that it "
3989 "was not installed properly, or its distribution file was "
3990 "not unpacked properly.\nSee the README.W32 file in the "
3991 "top-level Emacs directory for more information.",
3992 init_file_name
, load_path
);
3995 "Emacs Abort Dialog",
3996 MB_OK
| MB_ICONEXCLAMATION
| MB_TASKMODAL
);
3997 /* Use the low-level Emacs abort. */
4012 /* shutdown the socket interface if necessary */
4023 /* Initialise the socket interface now if available and requested by
4024 the user by defining PRELOAD_WINSOCK; otherwise loading will be
4025 delayed until open-network-stream is called (w32-has-winsock can
4026 also be used to dynamically load or reload winsock).
4028 Conveniently, init_environment is called before us, so
4029 PRELOAD_WINSOCK can be set in the registry. */
4031 /* Always initialize this correctly. */
4034 if (getenv ("PRELOAD_WINSOCK") != NULL
)
4035 init_winsock (TRUE
);
4038 /* Initial preparation for subprocess support: replace our standard
4039 handles with non-inheritable versions. */
4042 HANDLE stdin_save
= INVALID_HANDLE_VALUE
;
4043 HANDLE stdout_save
= INVALID_HANDLE_VALUE
;
4044 HANDLE stderr_save
= INVALID_HANDLE_VALUE
;
4046 parent
= GetCurrentProcess ();
4048 /* ignore errors when duplicating and closing; typically the
4049 handles will be invalid when running as a gui program. */
4050 DuplicateHandle (parent
,
4051 GetStdHandle (STD_INPUT_HANDLE
),
4056 DUPLICATE_SAME_ACCESS
);
4058 DuplicateHandle (parent
,
4059 GetStdHandle (STD_OUTPUT_HANDLE
),
4064 DUPLICATE_SAME_ACCESS
);
4066 DuplicateHandle (parent
,
4067 GetStdHandle (STD_ERROR_HANDLE
),
4072 DUPLICATE_SAME_ACCESS
);
4078 if (stdin_save
!= INVALID_HANDLE_VALUE
)
4079 _open_osfhandle ((long) stdin_save
, O_TEXT
);
4081 _open ("nul", O_TEXT
| O_NOINHERIT
| O_RDONLY
);
4084 if (stdout_save
!= INVALID_HANDLE_VALUE
)
4085 _open_osfhandle ((long) stdout_save
, O_TEXT
);
4087 _open ("nul", O_TEXT
| O_NOINHERIT
| O_WRONLY
);
4090 if (stderr_save
!= INVALID_HANDLE_VALUE
)
4091 _open_osfhandle ((long) stderr_save
, O_TEXT
);
4093 _open ("nul", O_TEXT
| O_NOINHERIT
| O_WRONLY
);
4097 /* unfortunately, atexit depends on implementation of malloc */
4098 /* atexit (term_ntproc); */
4099 signal (SIGABRT
, term_ntproc
);
4101 /* determine which drives are fixed, for GetCachedVolumeInformation */
4103 /* GetDriveType must have trailing backslash. */
4104 char drive
[] = "A:\\";
4106 /* Loop over all possible drive letters */
4107 while (*drive
<= 'Z')
4109 /* Record if this drive letter refers to a fixed drive. */
4110 fixed_drives
[DRIVE_INDEX (*drive
)] =
4111 (GetDriveType (drive
) == DRIVE_FIXED
);
4116 /* Reset the volume info cache. */
4117 volume_cache
= NULL
;
4120 /* Check to see if Emacs has been installed correctly. */
4121 check_windows_init_file ();
4125 shutdown_handler ensures that buffers' autosave files are
4126 up to date when the user logs off, or the system shuts down.
4128 BOOL WINAPI
shutdown_handler(DWORD type
)
4130 /* Ctrl-C and Ctrl-Break are already suppressed, so don't handle them. */
4131 if (type
== CTRL_CLOSE_EVENT
/* User closes console window. */
4132 || type
== CTRL_LOGOFF_EVENT
/* User logs off. */
4133 || type
== CTRL_SHUTDOWN_EVENT
) /* User shutsdown. */
4135 /* Shut down cleanly, making sure autosave files are up to date. */
4136 shut_down_emacs (0, 0, Qnil
);
4139 /* Allow other handlers to handle this signal. */
4144 globals_of_w32 is used to initialize those global variables that
4145 must always be initialized on startup even when the global variable
4146 initialized is non zero (see the function main in emacs.c).
4151 g_b_init_is_windows_9x
= 0;
4152 g_b_init_open_process_token
= 0;
4153 g_b_init_get_token_information
= 0;
4154 g_b_init_lookup_account_sid
= 0;
4155 g_b_init_get_sid_identifier_authority
= 0;
4156 /* The following sets a handler for shutdown notifications for
4157 console apps. This actually applies to Emacs in both console and
4158 GUI modes, since we had to fool windows into thinking emacs is a
4159 console application to get console mode to work. */
4160 SetConsoleCtrlHandler(shutdown_handler
, TRUE
);
4165 /* arch-tag: 90442dd3-37be-482b-b272-ac752e3049f1
4166 (do not change this comment) */