X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/d1c1c3d29960e872fe72d8d0d8d817847cade723..b19659b95312392eb1c937d7dd119d1bece8f057:/src/w32.c diff --git a/src/w32.c b/src/w32.c index da286ec781..f11ffb7a78 100644 --- a/src/w32.c +++ b/src/w32.c @@ -1,210 +1,373 @@ -/* Utility and Unix shadow routines for GNU Emacs on Windows NT. - Copyright (C) 1994, 1995 Free Software Foundation, Inc. +/* Utility and Unix shadow routines for GNU Emacs on the Microsoft W32 API. + Copyright (C) 1994, 1995, 2000, 2001, 2002, 2003, 2004, + 2005, 2006 Free Software Foundation, Inc. - This file is part of GNU Emacs. +This file is part of GNU Emacs. - GNU Emacs is free software; you can redistribute it and/or modify it - under the terms of the GNU General Public License as published by the - Free Software Foundation; either version 2, or (at your option) any later - version. +GNU Emacs is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. - GNU Emacs is distributed in the hope that it will be useful, but WITHOUT - ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - more details. +GNU Emacs is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. - You should have received a copy of the GNU General Public License along - with GNU Emacs; see the file COPYING. If not, write to the Free Software - Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. +You should have received a copy of the GNU General Public License +along with GNU Emacs; see the file COPYING. If not, write to +the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, +Boston, MA 02110-1301, USA. Geoff Voelker (voelker@cs.washington.edu) 7-29-94 */ - -/* Define stat before including config.h. */ -#include -#include -int -nt_stat (char *filename, struct stat *statbuf) -{ - int r, l = strlen (filename); - char *str = NULL; - extern long *xmalloc (); - extern void xfree (); - - /* stat has a bug when passed a name of a directory with a trailing - backslash (but a trailing forward slash works fine). */ - if (filename[l - 1] == '\\') - { - str = (char *) xmalloc (l + 1); - strcpy (str, filename); - str[l - 1] = '/'; - r = stat (str, statbuf); - xfree (str); - return r; - } - else - return stat (filename, statbuf); -} - -/* Place a wrapper around the NT version of ctime. It returns NULL - on network directories, so we handle that case here. - Define it before including config.h. (Ulrich Leodolter, 1/11/95). */ -char * -nt_ctime (const time_t *t) -{ - char *str = (char *) ctime (t); - return (str ? str : "Sun Jan 01 00:00:00 1970"); -} - -#include -#include +#include /* for offsetof */ #include #include #include +#include #include #include +#include +#include +#include +#include + +/* must include CRT headers *before* config.h */ + +#ifdef HAVE_CONFIG_H +#include +#endif + +#undef access +#undef chdir +#undef chmod +#undef creat +#undef ctime +#undef fopen +#undef link +#undef mkdir +#undef mktemp +#undef open +#undef rename +#undef rmdir +#undef unlink + +#undef close +#undef dup +#undef dup2 +#undef pipe +#undef read +#undef write + +#undef strerror -#define getwd _getwd #include "lisp.h" -#undef getwd #include +#include -#include "ndir.h" -#include "ntheap.h" - -extern int report_file_error (char *, Lisp_Object); +#ifdef __GNUC__ +#define _ANONYMOUS_UNION +#define _ANONYMOUS_STRUCT +#endif +#include +#include + +#ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */ +#include +#undef socket +#undef bind +#undef connect +#undef htons +#undef ntohs +#undef inet_addr +#undef gethostname +#undef gethostbyname +#undef getservbyname +#undef getpeername +#undef shutdown +#undef setsockopt +#undef listen +#undef getsockname +#undef accept +#undef recvfrom +#undef sendto +#endif -/* Get the current working directory. */ -int -getwd (char *dir) +#include "w32.h" +#include "ndir.h" +#include "w32heap.h" +#include "systime.h" + +typedef HRESULT (WINAPI * ShGetFolderPath_fn) + (IN HWND, IN int, IN HANDLE, IN DWORD, OUT char *); + +void globals_of_w32 (); + +extern Lisp_Object Vw32_downcase_file_names; +extern Lisp_Object Vw32_generate_fake_inodes; +extern Lisp_Object Vw32_get_true_file_attributes; +extern int w32_num_mouse_buttons; + + +/* + Initialization states + */ +static BOOL g_b_init_is_windows_9x; +static BOOL g_b_init_open_process_token; +static BOOL g_b_init_get_token_information; +static BOOL g_b_init_lookup_account_sid; +static BOOL g_b_init_get_sid_identifier_authority; + +/* + BEGIN: Wrapper functions around OpenProcessToken + and other functions in advapi32.dll that are only + supported in Windows NT / 2k / XP +*/ + /* ** Function pointer typedefs ** */ +typedef BOOL (WINAPI * OpenProcessToken_Proc) ( + HANDLE ProcessHandle, + DWORD DesiredAccess, + PHANDLE TokenHandle); +typedef BOOL (WINAPI * GetTokenInformation_Proc) ( + HANDLE TokenHandle, + TOKEN_INFORMATION_CLASS TokenInformationClass, + LPVOID TokenInformation, + DWORD TokenInformationLength, + PDWORD ReturnLength); +#ifdef _UNICODE +const char * const LookupAccountSid_Name = "LookupAccountSidW"; +#else +const char * const LookupAccountSid_Name = "LookupAccountSidA"; +#endif +typedef BOOL (WINAPI * LookupAccountSid_Proc) ( + LPCTSTR lpSystemName, + PSID Sid, + LPTSTR Name, + LPDWORD cbName, + LPTSTR DomainName, + LPDWORD cbDomainName, + PSID_NAME_USE peUse); +typedef PSID_IDENTIFIER_AUTHORITY (WINAPI * GetSidIdentifierAuthority_Proc) ( + PSID pSid); + + /* ** A utility function ** */ +static BOOL is_windows_9x () { - return GetCurrentDirectory (MAXPATHLEN, dir); + static BOOL s_b_ret=0; + OSVERSIONINFO os_ver; + if (g_b_init_is_windows_9x == 0) + { + g_b_init_is_windows_9x = 1; + ZeroMemory(&os_ver, sizeof(OSVERSIONINFO)); + os_ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); + if (GetVersionEx (&os_ver)) + { + s_b_ret = (os_ver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS); + } + } + return s_b_ret; } -/* Emulate gethostname. */ -int -gethostname (char *buffer, int size) -{ - /* NT only allows small host names, so the buffer is - certainly large enough. */ - return !GetComputerName (buffer, &size); -} + /* ** The wrapper functions ** */ -/* Emulate getloadavg. */ -int -getloadavg (double loadavg[], int nelem) +BOOL WINAPI open_process_token ( + HANDLE ProcessHandle, + DWORD DesiredAccess, + PHANDLE TokenHandle) { - int i; - - /* A faithful emulation is going to have to be saved for a rainy day. */ - for (i = 0; i < nelem; i++) + static OpenProcessToken_Proc s_pfn_Open_Process_Token = NULL; + HMODULE hm_advapi32 = NULL; + if (is_windows_9x () == TRUE) { - loadavg[i] = 0.0; + return FALSE; } - return i; + if (g_b_init_open_process_token == 0) + { + g_b_init_open_process_token = 1; + hm_advapi32 = LoadLibrary ("Advapi32.dll"); + s_pfn_Open_Process_Token = + (OpenProcessToken_Proc) GetProcAddress (hm_advapi32, "OpenProcessToken"); + } + if (s_pfn_Open_Process_Token == NULL) + { + return FALSE; + } + return ( + s_pfn_Open_Process_Token ( + ProcessHandle, + DesiredAccess, + TokenHandle) + ); } -/* Emulate sleep...we could have done this with a define, but that - would necessitate including windows.h in the files that used it. - This is much easier. */ -void -nt_sleep (int seconds) +BOOL WINAPI get_token_information ( + HANDLE TokenHandle, + TOKEN_INFORMATION_CLASS TokenInformationClass, + LPVOID TokenInformation, + DWORD TokenInformationLength, + PDWORD ReturnLength) { - Sleep (seconds * 1000); + static GetTokenInformation_Proc s_pfn_Get_Token_Information = NULL; + HMODULE hm_advapi32 = NULL; + if (is_windows_9x () == TRUE) + { + return FALSE; + } + if (g_b_init_get_token_information == 0) + { + g_b_init_get_token_information = 1; + hm_advapi32 = LoadLibrary ("Advapi32.dll"); + s_pfn_Get_Token_Information = + (GetTokenInformation_Proc) GetProcAddress (hm_advapi32, "GetTokenInformation"); + } + if (s_pfn_Get_Token_Information == NULL) + { + return FALSE; + } + return ( + s_pfn_Get_Token_Information ( + TokenHandle, + TokenInformationClass, + TokenInformation, + TokenInformationLength, + ReturnLength) + ); } -/* Emulate the Unix directory procedures opendir, closedir, - and readdir. We can't use the procedures supplied in sysdep.c, - so we provide them here. */ - -struct direct dir_static; /* simulated directory contents */ -static int dir_finding; -static HANDLE dir_find_handle; - -DIR * -opendir (char *filename) +BOOL WINAPI lookup_account_sid ( + LPCTSTR lpSystemName, + PSID Sid, + LPTSTR Name, + LPDWORD cbName, + LPTSTR DomainName, + LPDWORD cbDomainName, + PSID_NAME_USE peUse) { - DIR *dirp; - - /* Opening is done by FindFirstFile. However, a read is inherent to - this operation, so we have a flag to handle the open at read - time. This flag essentially means "there is a find-handle open and - it needs to be closed." */ - - if (!(dirp = (DIR *) malloc (sizeof (DIR)))) + static LookupAccountSid_Proc s_pfn_Lookup_Account_Sid = NULL; + HMODULE hm_advapi32 = NULL; + if (is_windows_9x () == TRUE) { - return 0; + return FALSE; } - - dirp->dd_fd = 0; - dirp->dd_loc = 0; - dirp->dd_size = 0; - - /* This is tacky, but we need the directory name for our - implementation of readdir. */ - strncpy (dirp->dd_buf, filename, DIRBLKSIZ); - return dirp; + if (g_b_init_lookup_account_sid == 0) + { + g_b_init_lookup_account_sid = 1; + hm_advapi32 = LoadLibrary ("Advapi32.dll"); + s_pfn_Lookup_Account_Sid = + (LookupAccountSid_Proc) GetProcAddress (hm_advapi32, LookupAccountSid_Name); + } + if (s_pfn_Lookup_Account_Sid == NULL) + { + return FALSE; + } + return ( + s_pfn_Lookup_Account_Sid ( + lpSystemName, + Sid, + Name, + cbName, + DomainName, + cbDomainName, + peUse) + ); } -void -closedir (DIR *dirp) +PSID_IDENTIFIER_AUTHORITY WINAPI get_sid_identifier_authority ( + PSID pSid) { - /* If we have a find-handle open, close it. */ - if (dir_finding) + static GetSidIdentifierAuthority_Proc s_pfn_Get_Sid_Identifier_Authority = NULL; + HMODULE hm_advapi32 = NULL; + if (is_windows_9x () == TRUE) { - FindClose (dir_find_handle); - dir_finding = 0; + return NULL; } - xfree ((char *) dirp); + if (g_b_init_get_sid_identifier_authority == 0) + { + g_b_init_get_sid_identifier_authority = 1; + hm_advapi32 = LoadLibrary ("Advapi32.dll"); + s_pfn_Get_Sid_Identifier_Authority = + (GetSidIdentifierAuthority_Proc) GetProcAddress ( + hm_advapi32, "GetSidIdentifierAuthority"); + } + if (s_pfn_Get_Sid_Identifier_Authority == NULL) + { + return NULL; + } + return (s_pfn_Get_Sid_Identifier_Authority (pSid)); } -struct direct * -readdir (DIR *dirp) +/* + END: Wrapper functions around OpenProcessToken + and other functions in advapi32.dll that are only + supported in Windows NT / 2k / XP +*/ + + +/* Equivalent of strerror for W32 error codes. */ +char * +w32_strerror (int error_no) { - WIN32_FIND_DATA find_data; - - /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */ - if (!dir_finding) - { - char filename[MAXNAMLEN + 3]; - int ln; + static char buf[500]; + + if (error_no == 0) + error_no = GetLastError (); + + buf[0] = '\0'; + if (!FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, NULL, + error_no, + 0, /* choose most suitable language */ + buf, sizeof (buf), NULL)) + sprintf (buf, "w32 error %u", error_no); + return buf; +} - strncpy (filename, dirp->dd_buf, MAXNAMLEN); - ln = strlen (filename)-1; - if (filename[ln] != '\\' && filename[ln] != ':') - strcat (filename, "\\"); - strcat (filename, "*.*"); +static char startup_dir[MAXPATHLEN]; + +/* Get the current working directory. */ +char * +getwd (char *dir) +{ +#if 0 + if (GetCurrentDirectory (MAXPATHLEN, dir) > 0) + return dir; + return NULL; +#else + /* Emacs doesn't actually change directory itself, and we want to + force our real wd to be where emacs.exe is to avoid unnecessary + conflicts when trying to rename or delete directories. */ + strcpy (dir, startup_dir); + return dir; +#endif +} - dir_find_handle = FindFirstFile (filename, &find_data); +#ifndef HAVE_SOCKETS +/* Emulate gethostname. */ +int +gethostname (char *buffer, int size) +{ + /* NT only allows small host names, so the buffer is + certainly large enough. */ + return !GetComputerName (buffer, &size); +} +#endif /* HAVE_SOCKETS */ - if (dir_find_handle == INVALID_HANDLE_VALUE) - return NULL; +/* Emulate getloadavg. */ +int +getloadavg (double loadavg[], int nelem) +{ + int i; - dir_finding = 1; - } - else + /* A faithful emulation is going to have to be saved for a rainy day. */ + for (i = 0; i < nelem; i++) { - if (!FindNextFile (dir_find_handle, &find_data)) - return NULL; + loadavg[i] = 0.0; } - - /* NT's unique ID for a file is 64 bits, so we have to fake it here. - This should work as long as we never use 0. */ - dir_static.d_ino = 1; - - dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + - dir_static.d_namlen - dir_static.d_namlen % 4; - - dir_static.d_namlen = strlen (find_data.cFileName); - strncpy (dir_static.d_name, find_data.cFileName, MAXNAMLEN); - - return &dir_static; + return i; } -/* Emulate getpwuid and getpwnam. */ - -int getuid (); /* forward declaration */ +/* Emulate getpwuid, getpwnam and others. */ #define PASSWD_FIELD_SIZE 256 @@ -214,7 +377,7 @@ static char the_passwd_gecos[PASSWD_FIELD_SIZE]; static char the_passwd_dir[PASSWD_FIELD_SIZE]; static char the_passwd_shell[PASSWD_FIELD_SIZE]; -static struct passwd the_passwd = +static struct passwd the_passwd = { the_passwd_name, the_passwd_passwd, @@ -226,447 +389,932 @@ static struct passwd the_passwd = the_passwd_shell, }; +static struct group the_group = +{ + /* There are no groups on NT, so we just return "root" as the + group name. */ + "root", +}; + +int +getuid () +{ + return the_passwd.pw_uid; +} + +int +geteuid () +{ + /* I could imagine arguing for checking to see whether the user is + in the Administrators group and returning a UID of 0 for that + case, but I don't know how wise that would be in the long run. */ + return getuid (); +} + +int +getgid () +{ + return the_passwd.pw_gid; +} + +int +getegid () +{ + return getgid (); +} + struct passwd * getpwuid (int uid) { - int size = PASSWD_FIELD_SIZE; - - if (!GetUserName (the_passwd.pw_name, &size)) - return NULL; - - the_passwd.pw_passwd[0] = '\0'; - the_passwd.pw_uid = 0; - the_passwd.pw_gid = 0; - strcpy (the_passwd.pw_gecos, the_passwd.pw_name); - the_passwd.pw_dir[0] = '\0'; - the_passwd.pw_shell[0] = '\0'; + if (uid == the_passwd.pw_uid) + return &the_passwd; + return NULL; +} - return &the_passwd; +struct group * +getgrgid (gid_t gid) +{ + return &the_group; } struct passwd * getpwnam (char *name) { struct passwd *pw; - + pw = getpwuid (getuid ()); if (!pw) return pw; - if (strcmp (name, pw->pw_name)) + if (stricmp (name, pw->pw_name)) return NULL; return pw; } - -/* We don't have scripts to automatically determine the system configuration - for Emacs before it's compiled, and we don't want to have to make the - user enter it, so we define EMACS_CONFIGURATION to invoke this runtime - routine. */ - -static char configuration_buffer[32]; - -char * -get_emacs_configuration (void) +void +init_user_info () { - char *arch, *oem, *os; - - /* Determine the processor type. */ - switch (get_processor_type ()) + /* Find the user's real name by opening the process token and + looking up the name associated with the user-sid in that token. + + Use the relative portion of the identifier authority value from + the user-sid as the user id value (same for group id using the + primary group sid from the process token). */ + + char user_sid[256], name[256], domain[256]; + DWORD length = sizeof (name), dlength = sizeof (domain), trash; + HANDLE token = NULL; + SID_NAME_USE user_type; + + if ( + open_process_token (GetCurrentProcess (), TOKEN_QUERY, &token) + && get_token_information ( + token, TokenUser, + (PVOID) user_sid, sizeof (user_sid), &trash) + && lookup_account_sid ( + NULL, *((PSID *) user_sid), name, &length, + domain, &dlength, &user_type) + ) { - -#ifdef PROCESSOR_INTEL_386 - case PROCESSOR_INTEL_386: - case PROCESSOR_INTEL_486: - case PROCESSOR_INTEL_PENTIUM: - arch = "i386"; - break; -#endif - -#ifdef PROCESSOR_INTEL_860 - case PROCESSOR_INTEL_860: - arch = "i860"; - break; -#endif - -#ifdef PROCESSOR_MIPS_R2000 - case PROCESSOR_MIPS_R2000: - case PROCESSOR_MIPS_R3000: - case PROCESSOR_MIPS_R4000: - arch = "mips"; - break; -#endif - -#ifdef PROCESSOR_ALPHA_21064 - case PROCESSOR_ALPHA_21064: - arch = "alpha"; - break; -#endif - - default: - arch = "unknown"; - break; + strcpy (the_passwd.pw_name, name); + /* Determine a reasonable uid value. */ + if (stricmp ("administrator", name) == 0) + { + the_passwd.pw_uid = 0; + the_passwd.pw_gid = 0; + } + else + { + SID_IDENTIFIER_AUTHORITY * pSIA; + + pSIA = get_sid_identifier_authority (*((PSID *) user_sid)); + /* I believe the relative portion is the last 4 bytes (of 6) + with msb first. */ + the_passwd.pw_uid = ((pSIA->Value[2] << 24) + + (pSIA->Value[3] << 16) + + (pSIA->Value[4] << 8) + + (pSIA->Value[5] << 0)); + /* restrict to conventional uid range for normal users */ + the_passwd.pw_uid = the_passwd.pw_uid % 60001; + + /* Get group id */ + if (get_token_information (token, TokenPrimaryGroup, + (PVOID) user_sid, sizeof (user_sid), &trash)) + { + SID_IDENTIFIER_AUTHORITY * pSIA; + + pSIA = get_sid_identifier_authority (*((PSID *) user_sid)); + the_passwd.pw_gid = ((pSIA->Value[2] << 24) + + (pSIA->Value[3] << 16) + + (pSIA->Value[4] << 8) + + (pSIA->Value[5] << 0)); + /* I don't know if this is necessary, but for safety... */ + the_passwd.pw_gid = the_passwd.pw_gid % 60001; + } + else + the_passwd.pw_gid = the_passwd.pw_uid; + } + } + /* If security calls are not supported (presumably because we + are running under Windows 95), fallback to this. */ + else if (GetUserName (name, &length)) + { + strcpy (the_passwd.pw_name, name); + if (stricmp ("administrator", name) == 0) + the_passwd.pw_uid = 0; + else + the_passwd.pw_uid = 123; + the_passwd.pw_gid = the_passwd.pw_uid; + } + else + { + strcpy (the_passwd.pw_name, "unknown"); + the_passwd.pw_uid = 123; + the_passwd.pw_gid = 123; } - /* Let oem be "*" until we figure out how to decode the OEM field. */ - oem = "*"; + /* Ensure HOME and SHELL are defined. */ + if (getenv ("HOME") == NULL) + abort (); + if (getenv ("SHELL") == NULL) + abort (); -#ifdef WINDOWS95 - os = "win"; -#else - os = "nt"; -#endif + /* Set dir and shell from environment variables. */ + strcpy (the_passwd.pw_dir, getenv ("HOME")); + strcpy (the_passwd.pw_shell, getenv ("SHELL")); - sprintf (configuration_buffer, "%s-%s-%s%d.%d", arch, oem, os, - get_nt_major_version (), get_nt_minor_version ()); - return configuration_buffer; + if (token) + CloseHandle (token); } -/* Conjure up inode and device numbers that will serve the purpose - of Emacs. Return 1 upon success, 0 upon failure. */ int -get_inode_and_device_vals (Lisp_Object filename, Lisp_Object *p_inode, - Lisp_Object *p_device) +random () { - /* File uids on NT are found using a handle to a file, which - implies that it has been opened. Since we want to be able - to stat an arbitrary file, we must open it, get the info, - and then close it. - - Also, NT file uids are 64-bits. This is a problem. */ + /* rand () on NT gives us 15 random bits...hack together 30 bits. */ + return ((rand () << 15) | rand ()); +} - HANDLE handle; - BOOL result; - DWORD attrs; - BY_HANDLE_FILE_INFORMATION info; +void +srandom (int seed) +{ + srand (seed); +} - /* We have to stat files and directories differently, so check - to see what filename references. */ - attrs = GetFileAttributes (XSTRING (filename)->data); - if (attrs == 0xFFFFFFFF) { - return 0; - } - if (attrs & FILE_ATTRIBUTE_DIRECTORY) { - /* Conjure up bogus, but unique, values. */ - attrs = GetTickCount (); - *p_inode = make_number (attrs); - *p_device = make_number (attrs); - return 1; - } - /* FIXME: It shouldn't be opened without READ access, but NT on x86 - doesn't allow GetFileInfo in that case (NT on mips does). */ - - handle = CreateFile (XSTRING (filename)->data, - GENERIC_READ, - FILE_SHARE_READ | FILE_SHARE_WRITE, - NULL, - OPEN_EXISTING, - FILE_ATTRIBUTE_NORMAL, - NULL); - if (handle == INVALID_HANDLE_VALUE) - return 0; +/* Normalize filename by converting all path separators to + the specified separator. Also conditionally convert upper + case path name components to lower case. */ - result = GetFileInformationByHandle (handle, &info); - CloseHandle (handle); - if (!result) - return 0; +static void +normalize_filename (fp, path_sep) + register char *fp; + char path_sep; +{ + char sep; + char *elem; + + /* Always lower-case drive letters a-z, even if the filesystem + preserves case in filenames. + This is so filenames can be compared by string comparison + functions that are case-sensitive. Even case-preserving filesystems + do not distinguish case in drive letters. */ + if (fp[1] == ':' && *fp >= 'A' && *fp <= 'Z') + { + *fp += 'a' - 'A'; + fp += 2; + } - *p_inode = make_number (info.nFileIndexLow); /* use the low value */ - *p_device = make_number (info.dwVolumeSerialNumber); + if (NILP (Vw32_downcase_file_names)) + { + while (*fp) + { + if (*fp == '/' || *fp == '\\') + *fp = path_sep; + fp++; + } + return; + } - return 1; + sep = path_sep; /* convert to this path separator */ + elem = fp; /* start of current path element */ + + do { + if (*fp >= 'a' && *fp <= 'z') + elem = 0; /* don't convert this element */ + + if (*fp == 0 || *fp == ':') + { + sep = *fp; /* restore current separator (or 0) */ + *fp = '/'; /* after conversion of this element */ + } + + if (*fp == '/' || *fp == '\\') + { + if (elem && elem != fp) + { + *fp = 0; /* temporary end of string */ + _strlwr (elem); /* while we convert to lower case */ + } + *fp = sep; /* convert (or restore) path separator */ + elem = fp + 1; /* next element starts after separator */ + sep = path_sep; + } + } while (*fp++); } -/* The following pipe routines are used to support our fork emulation. - Since NT's crt dup always creates inherited handles, we - must be careful in setting up pipes. First create - non-inherited pipe handles, then create an inherited handle - to the write end by dup-ing it, and then close the non-inherited - end that was just duped. This gives us one non-inherited handle - on the read end and one inherited handle to the write end. As - the parent, we close the inherited handle to the write end after - spawning the child. */ - -/* From callproc.c */ -extern Lisp_Object Vbinary_process_input; -extern Lisp_Object Vbinary_process_output; - +/* Destructively turn backslashes into slashes. */ void -pipe_with_inherited_out (int fds[2]) +dostounix_filename (p) + register char *p; { - int inherit_out; - unsigned int flags = _O_NOINHERIT; - - if (!NILP (Vbinary_process_output)) - flags |= _O_BINARY; - - _pipe (fds, 0, flags); - inherit_out = dup (fds[1]); - close (fds[1]); - fds[1] = inherit_out; + normalize_filename (p, '/'); } +/* Destructively turn slashes into backslashes. */ void -pipe_with_inherited_in (int fds[2]) +unixtodos_filename (p) + register char *p; { - int inherit_in; - unsigned int flags = _O_NOINHERIT; - - if (!NILP (Vbinary_process_input)) - flags |= _O_BINARY; - - _pipe (fds, 0, flags); - inherit_in = dup (fds[0]); - close (fds[0]); - fds[0] = inherit_in; + normalize_filename (p, '\\'); } -/* The following two routines are used to manipulate stdin, stdout, and - stderr of our child processes. - - Assuming that in, out, and err are inherited, we make them stdin, - stdout, and stderr of the child as follows: - - - Save the parent's current standard handles. - - Set the parent's standard handles to the handles being passed in. - (Note that _get_osfhandle is an io.h procedure that - maps crt file descriptors to NT file handles.) - - Spawn the child, which inherits in, out, and err as stdin, - stdout, and stderr. (see Spawnve) - - Reset the parent's standard handles to the saved handles. - (see reset_standard_handles) - We assume that the caller closes in, out, and err after calling us. */ - -void -prepare_standard_handles (int in, int out, int err, HANDLE handles[4]) +/* Remove all CR's that are followed by a LF. + (From msdos.c...probably should figure out a way to share it, + although this code isn't going to ever change.) */ +int +crlf_to_lf (n, buf) + register int n; + register unsigned char *buf; { - HANDLE parent, stdin_save, stdout_save, stderr_save, err_handle; - -#ifdef WINDOWS95 - /* The Win95 beta doesn't set the standard handles correctly. - Handicap subprocesses until we get a version that works correctly. - Undefining the subprocesses macro reveals other incompatibilities, - so, since we're expecting subprocs to work in the near future, - disable them here. */ - report_file_error ("Subprocesses currently disabled on Win95", Qnil); -#endif + unsigned char *np = buf; + unsigned char *startp = buf; + unsigned char *endp = buf + n; - parent = GetCurrentProcess (); - stdin_save = GetStdHandle (STD_INPUT_HANDLE); - stdout_save = GetStdHandle (STD_OUTPUT_HANDLE); - stderr_save = GetStdHandle (STD_ERROR_HANDLE); - - if (!DuplicateHandle (parent, - GetStdHandle (STD_INPUT_HANDLE), - parent, - &stdin_save, - 0, - FALSE, - DUPLICATE_SAME_ACCESS)) - report_file_error ("Duplicating parent's input handle", Qnil); - - if (!DuplicateHandle (parent, - GetStdHandle (STD_OUTPUT_HANDLE), - parent, - &stdout_save, - 0, - FALSE, - DUPLICATE_SAME_ACCESS)) - report_file_error ("Duplicating parent's output handle", Qnil); - - if (!DuplicateHandle (parent, - GetStdHandle (STD_ERROR_HANDLE), - parent, - &stderr_save, - 0, - FALSE, - DUPLICATE_SAME_ACCESS)) - report_file_error ("Duplicating parent's error handle", Qnil); - - if (!SetStdHandle (STD_INPUT_HANDLE, (HANDLE) _get_osfhandle (in))) - report_file_error ("Changing stdin handle", Qnil); - - if (!SetStdHandle (STD_OUTPUT_HANDLE, (HANDLE) _get_osfhandle (out))) - report_file_error ("Changing stdout handle", Qnil); - - /* We lose data if we use the same handle to the pipe for stdout and - stderr, so make a duplicate. This took a while to find. */ - if (out == err) - { - if (!DuplicateHandle (parent, - (HANDLE) _get_osfhandle (err), - parent, - &err_handle, - 0, - TRUE, - DUPLICATE_SAME_ACCESS)) - report_file_error ("Duplicating out handle to make err handle.", - Qnil); - } - else - { - err_handle = (HANDLE) _get_osfhandle (err); - } - - if (!SetStdHandle (STD_ERROR_HANDLE, err_handle)) - report_file_error ("Changing stderr handle", Qnil); - - handles[0] = stdin_save; - handles[1] = stdout_save; - handles[2] = stderr_save; - handles[3] = err_handle; + if (n == 0) + return n; + while (buf < endp - 1) + { + if (*buf == 0x0d) + { + if (*(++buf) != 0x0a) + *np++ = 0x0d; + } + else + *np++ = *buf++; + } + if (buf < endp) + *np++ = *buf++; + return np - startp; } -void -reset_standard_handles (int in, int out, int err, HANDLE handles[4]) +/* Parse the root part of file name, if present. Return length and + optionally store pointer to char after root. */ +static int +parse_root (char * name, char ** pPath) { - HANDLE stdin_save = handles[0]; - HANDLE stdout_save = handles[1]; - HANDLE stderr_save = handles[2]; - HANDLE err_handle = handles[3]; - int i; + char * start = name; + + if (name == NULL) + return 0; - if (!SetStdHandle (STD_INPUT_HANDLE, stdin_save)) - report_file_error ("Resetting input handle", Qnil); - - if (!SetStdHandle (STD_OUTPUT_HANDLE, stdout_save)) + /* find the root name of the volume if given */ + if (isalpha (name[0]) && name[1] == ':') { - i = GetLastError (); - report_file_error ("Resetting output handle", Qnil); + /* skip past drive specifier */ + name += 2; + if (IS_DIRECTORY_SEP (name[0])) + name++; } - - if (!SetStdHandle (STD_ERROR_HANDLE, stderr_save)) - report_file_error ("Resetting error handle", Qnil); - - if (out == err) + else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) { - /* If out and err are the same handle, then we duplicated out - and stuck it in err_handle. Close the duplicate to clean up. */ - if (!CloseHandle (err_handle)) - report_file_error ("Closing error handle duplicated from out.", - Qnil); + int slashes = 2; + name += 2; + do + { + if (IS_DIRECTORY_SEP (*name) && --slashes == 0) + break; + name++; + } + while ( *name ); + if (IS_DIRECTORY_SEP (name[0])) + name++; } -} -int -random () -{ - /* rand () on NT gives us 15 random bits...hack together 30 bits. */ - return ((rand () << 15) | rand ()); + if (pPath) + *pPath = name; + + return name - start; } -void -srandom (int seed) +/* Get long base name for name; name is assumed to be absolute. */ +static int +get_long_basename (char * name, char * buf, int size) { - srand (seed); + WIN32_FIND_DATA find_data; + HANDLE dir_handle; + int len = 0; + + /* must be valid filename, no wild cards or other invalid characters */ + if (strpbrk (name, "*?|<>\"")) + return 0; + + dir_handle = FindFirstFile (name, &find_data); + if (dir_handle != INVALID_HANDLE_VALUE) + { + if ((len = strlen (find_data.cFileName)) < size) + memcpy (buf, find_data.cFileName, len + 1); + else + len = 0; + FindClose (dir_handle); + } + return len; } -/* Destructively turn backslashes into slashes. */ -void -dostounix_filename (p) - register char *p; +/* Get long name for file, if possible (assumed to be absolute). */ +BOOL +w32_get_long_filename (char * name, char * buf, int size) { - while (*p) + char * o = buf; + char * p; + char * q; + char full[ MAX_PATH ]; + int len; + + len = strlen (name); + if (len >= MAX_PATH) + return FALSE; + + /* Use local copy for destructive modification. */ + memcpy (full, name, len+1); + unixtodos_filename (full); + + /* Copy root part verbatim. */ + len = parse_root (full, &p); + memcpy (o, full, len); + o += len; + *o = '\0'; + size -= len; + + while (p != NULL && *p) { - if (*p == '\\') - *p = '/'; - p++; + q = p; + p = strchr (q, '\\'); + if (p) *p = '\0'; + len = get_long_basename (full, o, size); + if (len > 0) + { + o += len; + size -= len; + if (p != NULL) + { + *p++ = '\\'; + if (size < 2) + return FALSE; + *o++ = '\\'; + size--; + *o = '\0'; + } + } + else + return FALSE; } + + return TRUE; } -/* Routines that are no-ops on NT but are defined to get Emacs to compile. */ +int +is_unc_volume (const char *filename) +{ + const char *ptr = filename; + if (!IS_DIRECTORY_SEP (ptr[0]) || !IS_DIRECTORY_SEP (ptr[1]) || !ptr[2]) + return 0; -int -sigsetmask (int signal_mask) -{ - return 0; + if (strpbrk (ptr + 2, "*?|<>\"\\/")) + return 0; + + return 1; } -int -sigblock (int sig) -{ +/* Routines that are no-ops on NT but are defined to get Emacs to compile. */ + +int +sigsetmask (int signal_mask) +{ return 0; } -int -kill (int pid, int signal) -{ +int +sigmask (int sig) +{ return 0; } -int -setpgrp (int pid, int gid) -{ +int +sigblock (int sig) +{ return 0; } -int -alarm (int seconds) -{ +int +sigunblock (int sig) +{ return 0; } -int -unrequest_sigio (void) -{ +int +setpgrp (int pid, int gid) +{ return 0; } -int -request_sigio (void) -{ +int +alarm (int seconds) +{ return 0; } -int -getuid () -{ - return 0; +void +unrequest_sigio (void) +{ + return; } -int -geteuid () -{ - return 0; +void +request_sigio (void) +{ + return; } -/* Remove all CR's that are followed by a LF. - (From msdos.c...probably should figure out a way to share it, - although this code isn't going to ever change.) */ -int -crlf_to_lf (n, buf) - register int n; - register unsigned char *buf; +#define REG_ROOT "SOFTWARE\\GNU\\Emacs" + +LPBYTE +w32_get_resource (key, lpdwtype) + char *key; + LPDWORD lpdwtype; { - unsigned char *np = buf; - unsigned char *startp = buf; - unsigned char *endp = buf + n; + LPBYTE lpvalue; + HKEY hrootkey = NULL; + DWORD cbData; + BOOL ok = FALSE; - if (n == 0) - return n; - while (buf < endp - 1) + /* Check both the current user and the local machine to see if + we have any resources. */ + + if (RegOpenKeyEx (HKEY_CURRENT_USER, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) { - if (*buf == 0x0d) + lpvalue = NULL; + + if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS + && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL + && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) { - if (*(++buf) != 0x0a) - *np++ = 0x0d; + return (lpvalue); } - else - *np++ = *buf++; + + if (lpvalue) xfree (lpvalue); + + RegCloseKey (hrootkey); } - if (buf < endp) - *np++ = *buf++; - return np - startp; + + if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) + { + lpvalue = NULL; + + if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS + && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL + && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) + { + return (lpvalue); + } + + if (lpvalue) xfree (lpvalue); + + RegCloseKey (hrootkey); + } + + return (NULL); +} + +char *get_emacs_configuration (void); +extern Lisp_Object Vsystem_configuration; + +void +init_environment (char ** argv) +{ + static const char * const tempdirs[] = { + "$TMPDIR", "$TEMP", "$TMP", "c:/" + }; + + int i; + + const int imax = sizeof (tempdirs) / sizeof (tempdirs[0]); + + /* Make sure they have a usable $TMPDIR. Many Emacs functions use + temporary files and assume "/tmp" if $TMPDIR is unset, which + will break on DOS/Windows. Refuse to work if we cannot find + a directory, not even "c:/", usable for that purpose. */ + for (i = 0; i < imax ; i++) + { + const char *tmp = tempdirs[i]; + + if (*tmp == '$') + tmp = getenv (tmp + 1); + /* Note that `access' can lie to us if the directory resides on a + read-only filesystem, like CD-ROM or a write-protected floppy. + The only way to be really sure is to actually create a file and + see if it succeeds. But I think that's too much to ask. */ + if (tmp && _access (tmp, D_OK) == 0) + { + char * var = alloca (strlen (tmp) + 8); + sprintf (var, "TMPDIR=%s", tmp); + _putenv (strdup (var)); + break; + } + } + if (i >= imax) + cmd_error_internal + (Fcons (Qerror, + Fcons (build_string ("no usable temporary directories found!!"), + Qnil)), + "While setting TMPDIR: "); + + /* Check for environment variables and use registry settings if they + don't exist. Fallback on default values where applicable. */ + { + int i; + LPBYTE lpval; + DWORD dwType; + char locale_name[32]; + struct stat ignored; + char default_home[MAX_PATH]; + + static const struct env_entry + { + char * name; + char * def_value; + } dflt_envvars[] = + { + {"HOME", "C:/"}, + {"PRELOAD_WINSOCK", NULL}, + {"emacs_dir", "C:/emacs"}, + {"EMACSLOADPATH", "%emacs_dir%/site-lisp;%emacs_dir%/../site-lisp;%emacs_dir%/lisp;%emacs_dir%/leim"}, + {"SHELL", "%emacs_dir%/bin/cmdproxy.exe"}, + {"EMACSDATA", "%emacs_dir%/etc"}, + {"EMACSPATH", "%emacs_dir%/bin"}, + /* We no longer set INFOPATH because Info-default-directory-list + is then ignored. */ + /* {"INFOPATH", "%emacs_dir%/info"}, */ + {"EMACSDOC", "%emacs_dir%/etc"}, + {"TERM", "cmd"}, + {"LANG", NULL}, + }; + +#define N_ENV_VARS sizeof(dflt_envvars)/sizeof(dflt_envvars[0]) + + /* We need to copy dflt_envvars[] and work on the copy because we + don't want the dumped Emacs to inherit the values of + environment variables we saw during dumping (which could be on + a different system). The defaults above must be left intact. */ + struct env_entry env_vars[N_ENV_VARS]; + + for (i = 0; i < N_ENV_VARS; i++) + env_vars[i] = dflt_envvars[i]; + + /* For backwards compatibility, check if a .emacs file exists in C:/ + If not, then we can try to default to the appdata directory under the + user's profile, which is more likely to be writable. */ + if (stat ("C:/.emacs", &ignored) < 0) + { + HRESULT profile_result; + /* Dynamically load ShGetFolderPath, as it won't exist on versions + of Windows 95 and NT4 that have not been updated to include + MSIE 5. Also we don't link with shell32.dll by default. */ + HMODULE shell32_dll; + ShGetFolderPath_fn get_folder_path; + shell32_dll = GetModuleHandle ("shell32.dll"); + get_folder_path = (ShGetFolderPath_fn) + GetProcAddress (shell32_dll, "SHGetFolderPathA"); + + if (get_folder_path != NULL) + { + profile_result = get_folder_path (NULL, CSIDL_APPDATA, NULL, + 0, default_home); + + /* If we can't get the appdata dir, revert to old behaviour. */ + if (profile_result == S_OK) + env_vars[0].def_value = default_home; + } + + /* Unload shell32.dll, it is not needed anymore. */ + FreeLibrary (shell32_dll); + } + + /* Get default locale info and use it for LANG. */ + if (GetLocaleInfo (LOCALE_USER_DEFAULT, + LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, + locale_name, sizeof (locale_name))) + { + for (i = 0; i < N_ENV_VARS; i++) + { + if (strcmp (env_vars[i].name, "LANG") == 0) + { + env_vars[i].def_value = locale_name; + break; + } + } + } + +#define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */ + + /* Treat emacs_dir specially: set it unconditionally based on our + location, if it appears that we are running from the bin subdir + of a standard installation. */ + { + char *p; + char modname[MAX_PATH]; + + if (!GetModuleFileName (NULL, modname, MAX_PATH)) + abort (); + if ((p = strrchr (modname, '\\')) == NULL) + abort (); + *p = 0; + + if ((p = strrchr (modname, '\\')) && stricmp (p, "\\bin") == 0) + { + char buf[SET_ENV_BUF_SIZE]; + + *p = 0; + for (p = modname; *p; p++) + if (*p == '\\') *p = '/'; + + _snprintf (buf, sizeof(buf)-1, "emacs_dir=%s", modname); + _putenv (strdup (buf)); + } + /* Handle running emacs from the build directory: src/oo-spd/i386/ */ + + /* FIXME: should use substring of get_emacs_configuration (). + But I don't think the Windows build supports alpha, mips etc + anymore, so have taken the easy option for now. */ + else if (p && stricmp (p, "\\i386") == 0) + { + *p = 0; + p = strrchr (modname, '\\'); + if (p != NULL) + { + *p = 0; + p = strrchr (modname, '\\'); + if (p && stricmp (p, "\\src") == 0) + { + char buf[SET_ENV_BUF_SIZE]; + + *p = 0; + for (p = modname; *p; p++) + if (*p == '\\') *p = '/'; + + _snprintf (buf, sizeof(buf)-1, "emacs_dir=%s", modname); + _putenv (strdup (buf)); + } + } + } + } + + for (i = 0; i < N_ENV_VARS; i++) + { + if (!getenv (env_vars[i].name)) + { + int dont_free = 0; + + if ((lpval = w32_get_resource (env_vars[i].name, &dwType)) == NULL) + { + lpval = env_vars[i].def_value; + dwType = REG_EXPAND_SZ; + dont_free = 1; + } + + if (lpval) + { + char buf1[SET_ENV_BUF_SIZE], buf2[SET_ENV_BUF_SIZE]; + + if (dwType == REG_EXPAND_SZ) + ExpandEnvironmentStrings ((LPSTR) lpval, buf1, sizeof(buf1)); + else if (dwType == REG_SZ) + strcpy (buf1, lpval); + if (dwType == REG_EXPAND_SZ || dwType == REG_SZ) + { + _snprintf (buf2, sizeof(buf2)-1, "%s=%s", env_vars[i].name, + buf1); + _putenv (strdup (buf2)); + } + + if (!dont_free) + xfree (lpval); + } + } + } + } + + /* Rebuild system configuration to reflect invoking system. */ + Vsystem_configuration = build_string (EMACS_CONFIGURATION); + + /* Another special case: on NT, the PATH variable is actually named + "Path" although cmd.exe (perhaps NT itself) arranges for + environment variable lookup and setting to be case insensitive. + However, Emacs assumes a fully case sensitive environment, so we + need to change "Path" to "PATH" to match the expectations of + various elisp packages. We do this by the sneaky method of + modifying the string in the C runtime environ entry. + + The same applies to COMSPEC. */ + { + char ** envp; + + for (envp = environ; *envp; envp++) + if (_strnicmp (*envp, "PATH=", 5) == 0) + memcpy (*envp, "PATH=", 5); + else if (_strnicmp (*envp, "COMSPEC=", 8) == 0) + memcpy (*envp, "COMSPEC=", 8); + } + + /* Remember the initial working directory for getwd, then make the + real wd be the location of emacs.exe to avoid conflicts when + renaming or deleting directories. (We also don't call chdir when + running subprocesses for the same reason.) */ + if (!GetCurrentDirectory (MAXPATHLEN, startup_dir)) + abort (); + + { + char *p; + static char modname[MAX_PATH]; + + if (!GetModuleFileName (NULL, modname, MAX_PATH)) + abort (); + if ((p = strrchr (modname, '\\')) == NULL) + abort (); + *p = 0; + + SetCurrentDirectory (modname); + + /* Ensure argv[0] has the full path to Emacs. */ + *p = '\\'; + argv[0] = modname; + } + + /* Determine if there is a middle mouse button, to allow parse_button + to decide whether right mouse events should be mouse-2 or + mouse-3. */ + w32_num_mouse_buttons = GetSystemMetrics (SM_CMOUSEBUTTONS); + + init_user_info (); +} + +char * +emacs_root_dir (void) +{ + static char root_dir[FILENAME_MAX]; + const char *p; + + p = getenv ("emacs_dir"); + if (p == NULL) + abort (); + strcpy (root_dir, p); + root_dir[parse_root (root_dir, NULL)] = '\0'; + dostounix_filename (root_dir); + return root_dir; +} + +/* We don't have scripts to automatically determine the system configuration + for Emacs before it's compiled, and we don't want to have to make the + user enter it, so we define EMACS_CONFIGURATION to invoke this runtime + routine. */ + +char * +get_emacs_configuration (void) +{ + char *arch, *oem, *os; + int build_num; + static char configuration_buffer[32]; + + /* Determine the processor type. */ + switch (get_processor_type ()) + { + +#ifdef PROCESSOR_INTEL_386 + case PROCESSOR_INTEL_386: + case PROCESSOR_INTEL_486: + case PROCESSOR_INTEL_PENTIUM: + arch = "i386"; + break; +#endif + +#ifdef PROCESSOR_INTEL_860 + case PROCESSOR_INTEL_860: + arch = "i860"; + break; +#endif + +#ifdef PROCESSOR_MIPS_R2000 + case PROCESSOR_MIPS_R2000: + case PROCESSOR_MIPS_R3000: + case PROCESSOR_MIPS_R4000: + arch = "mips"; + break; +#endif + +#ifdef PROCESSOR_ALPHA_21064 + case PROCESSOR_ALPHA_21064: + arch = "alpha"; + break; +#endif + + default: + arch = "unknown"; + break; + } + + /* Use the OEM field to reflect the compiler/library combination. */ +#ifdef _MSC_VER +#define COMPILER_NAME "msvc" +#else +#ifdef __GNUC__ +#define COMPILER_NAME "mingw" +#else +#define COMPILER_NAME "unknown" +#endif +#endif + oem = COMPILER_NAME; + + switch (osinfo_cache.dwPlatformId) { + case VER_PLATFORM_WIN32_NT: + os = "nt"; + build_num = osinfo_cache.dwBuildNumber; + break; + case VER_PLATFORM_WIN32_WINDOWS: + if (osinfo_cache.dwMinorVersion == 0) { + os = "windows95"; + } else { + os = "windows98"; + } + build_num = LOWORD (osinfo_cache.dwBuildNumber); + break; + case VER_PLATFORM_WIN32s: + /* Not supported, should not happen. */ + os = "windows32s"; + build_num = LOWORD (osinfo_cache.dwBuildNumber); + break; + default: + os = "unknown"; + build_num = 0; + break; + } + + if (osinfo_cache.dwPlatformId == VER_PLATFORM_WIN32_NT) { + sprintf (configuration_buffer, "%s-%s-%s%d.%d.%d", arch, oem, os, + get_w32_major_version (), get_w32_minor_version (), build_num); + } else { + sprintf (configuration_buffer, "%s-%s-%s.%d", arch, oem, os, build_num); + } + + return configuration_buffer; +} + +char * +get_emacs_configuration_options (void) +{ + static char options_buffer[256]; + +/* Work out the effective configure options for this build. */ +#ifdef _MSC_VER +#define COMPILER_VERSION "--with-msvc (%d.%02d)", _MSC_VER / 100, _MSC_VER % 100 +#else +#ifdef __GNUC__ +#define COMPILER_VERSION "--with-gcc (%d.%d)", __GNUC__, __GNUC_MINOR__ +#else +#define COMPILER_VERSION "" +#endif +#endif + + sprintf (options_buffer, COMPILER_VERSION); +#ifdef EMACSDEBUG + strcat (options_buffer, " --no-opt"); +#endif +#ifdef USER_CFLAGS + strcat (options_buffer, " --cflags"); + strcat (options_buffer, USER_CFLAGS); +#endif +#ifdef USER_LDFLAGS + strcat (options_buffer, " --ldflags"); + strcat (options_buffer, USER_LDFLAGS); +#endif + return options_buffer; } -#ifdef HAVE_TIMEVAL + #include /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */ -void +void gettimeofday (struct timeval *tv, struct timezone *tz) { struct _timeb tb; @@ -674,50 +1322,2746 @@ gettimeofday (struct timeval *tv, struct timezone *tz) tv->tv_sec = tb.time; tv->tv_usec = tb.millitm * 1000L; - if (tz) + if (tz) { tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */ tz->tz_dsttime = tb.dstflag; /* type of dst correction */ } } -#endif /* HAVE_TIMEVAL */ +/* ------------------------------------------------------------------------- */ +/* IO support and wrapper functions for W32 API. */ +/* ------------------------------------------------------------------------- */ -#ifdef PIGSFLY -Keep this around...we might need it later. -#ifdef WINDOWSNT +/* Place a wrapper around the MSVC version of ctime. It returns NULL + on network directories, so we handle that case here. + (Ulrich Leodolter, 1/11/95). */ +char * +sys_ctime (const time_t *t) { - /* - * Find the user's real name by opening the process token and looking - * up the name associated with the user-sid in that token. - */ - - char b[256], Name[256], RefD[256]; - DWORD length = 256, rlength = 256, trash; - HANDLE Token; - SID_NAME_USE User; + char *str = (char *) ctime (t); + return (str ? str : "Sun Jan 01 00:00:00 1970"); +} - if (1) - Vuser_real_login_name = build_string ("foo"); - else if (!OpenProcessToken (GetCurrentProcess (), TOKEN_QUERY, &Token)) - { - Vuser_real_login_name = build_string ("unknown"); - } - else if (!GetTokenInformation (Token, TokenUser, (PVOID)b, 256, - &trash)) - { - CloseHandle (Token); - Vuser_real_login_name = build_string ("unknown"); +/* Emulate sleep...we could have done this with a define, but that + would necessitate including windows.h in the files that used it. + This is much easier. */ +void +sys_sleep (int seconds) +{ + Sleep (seconds * 1000); +} + +/* Internal MSVC functions for low-level descriptor munging */ +extern int __cdecl _set_osfhnd (int fd, long h); +extern int __cdecl _free_osfhnd (int fd); + +/* parallel array of private info on file handles */ +filedesc fd_info [ MAXDESC ]; + +typedef struct volume_info_data { + struct volume_info_data * next; + + /* time when info was obtained */ + DWORD timestamp; + + /* actual volume info */ + char * root_dir; + DWORD serialnum; + DWORD maxcomp; + DWORD flags; + char * name; + char * type; +} volume_info_data; + +/* Global referenced by various functions. */ +static volume_info_data volume_info; + +/* Vector to indicate which drives are local and fixed (for which cached + data never expires). */ +static BOOL fixed_drives[26]; + +/* Consider cached volume information to be stale if older than 10s, + at least for non-local drives. Info for fixed drives is never stale. */ +#define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' ) +#define VOLINFO_STILL_VALID( root_dir, info ) \ + ( ( isalpha (root_dir[0]) && \ + fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \ + || GetTickCount () - info->timestamp < 10000 ) + +/* Cache support functions. */ + +/* Simple linked list with linear search is sufficient. */ +static volume_info_data *volume_cache = NULL; + +static volume_info_data * +lookup_volume_info (char * root_dir) +{ + volume_info_data * info; + + for (info = volume_cache; info; info = info->next) + if (stricmp (info->root_dir, root_dir) == 0) + break; + return info; +} + +static void +add_volume_info (char * root_dir, volume_info_data * info) +{ + info->root_dir = xstrdup (root_dir); + info->next = volume_cache; + volume_cache = info; +} + + +/* Wrapper for GetVolumeInformation, which uses caching to avoid + performance penalty (~2ms on 486 for local drives, 7.5ms for local + cdrom drive, ~5-10ms or more for remote drives on LAN). */ +volume_info_data * +GetCachedVolumeInformation (char * root_dir) +{ + volume_info_data * info; + char default_root[ MAX_PATH ]; + + /* NULL for root_dir means use root from current directory. */ + if (root_dir == NULL) + { + if (GetCurrentDirectory (MAX_PATH, default_root) == 0) + return NULL; + parse_root (default_root, &root_dir); + *root_dir = 0; + root_dir = default_root; + } + + /* Local fixed drives can be cached permanently. Removable drives + cannot be cached permanently, since the volume name and serial + number (if nothing else) can change. Remote drives should be + treated as if they are removable, since there is no sure way to + tell whether they are or not. Also, the UNC association of drive + letters mapped to remote volumes can be changed at any time (even + by other processes) without notice. + + As a compromise, so we can benefit from caching info for remote + volumes, we use a simple expiry mechanism to invalidate cache + entries that are more than ten seconds old. */ + +#if 0 + /* No point doing this, because WNetGetConnection is even slower than + GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW, + GetDriveType is about the only call of this type which does not + involve network access, and so is extremely quick). */ + + /* Map drive letter to UNC if remote. */ + if ( isalpha( root_dir[0] ) && !fixed[ DRIVE_INDEX( root_dir[0] ) ] ) + { + char remote_name[ 256 ]; + char drive[3] = { root_dir[0], ':' }; + + if (WNetGetConnection (drive, remote_name, sizeof (remote_name)) + == NO_ERROR) + /* do something */ ; + } +#endif + + info = lookup_volume_info (root_dir); + + if (info == NULL || ! VOLINFO_STILL_VALID (root_dir, info)) + { + char name[ 256 ]; + DWORD serialnum; + DWORD maxcomp; + DWORD flags; + char type[ 256 ]; + + /* Info is not cached, or is stale. */ + if (!GetVolumeInformation (root_dir, + name, sizeof (name), + &serialnum, + &maxcomp, + &flags, + type, sizeof (type))) + return NULL; + + /* Cache the volume information for future use, overwriting existing + entry if present. */ + if (info == NULL) + { + info = (volume_info_data *) xmalloc (sizeof (volume_info_data)); + add_volume_info (root_dir, info); + } + else + { + xfree (info->name); + xfree (info->type); + } + + info->name = xstrdup (name); + info->serialnum = serialnum; + info->maxcomp = maxcomp; + info->flags = flags; + info->type = xstrdup (type); + info->timestamp = GetTickCount (); + } + + return info; +} + +/* Get information on the volume where name is held; set path pointer to + start of pathname in name (past UNC header\volume header if present). */ +int +get_volume_info (const char * name, const char ** pPath) +{ + char temp[MAX_PATH]; + char *rootname = NULL; /* default to current volume */ + volume_info_data * info; + + if (name == NULL) + return FALSE; + + /* find the root name of the volume if given */ + if (isalpha (name[0]) && name[1] == ':') + { + rootname = temp; + temp[0] = *name++; + temp[1] = *name++; + temp[2] = '\\'; + temp[3] = 0; + } + else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) + { + char *str = temp; + int slashes = 4; + rootname = temp; + do + { + if (IS_DIRECTORY_SEP (*name) && --slashes == 0) + break; + *str++ = *name++; + } + while ( *name ); + + *str++ = '\\'; + *str = 0; + } + + if (pPath) + *pPath = name; + + info = GetCachedVolumeInformation (rootname); + if (info != NULL) + { + /* Set global referenced by other functions. */ + volume_info = *info; + return TRUE; + } + return FALSE; +} + +/* Determine if volume is FAT format (ie. only supports short 8.3 + names); also set path pointer to start of pathname in name. */ +int +is_fat_volume (const char * name, const char ** pPath) +{ + if (get_volume_info (name, pPath)) + return (volume_info.maxcomp == 12); + return FALSE; +} + +/* Map filename to a legal 8.3 name if necessary. */ +const char * +map_w32_filename (const char * name, const char ** pPath) +{ + static char shortname[MAX_PATH]; + char * str = shortname; + char c; + char * path; + const char * save_name = name; + + if (strlen (name) >= MAX_PATH) + { + /* Return a filename which will cause callers to fail. */ + strcpy (shortname, "?"); + return shortname; + } + + if (is_fat_volume (name, (const char **)&path)) /* truncate to 8.3 */ + { + register int left = 8; /* maximum number of chars in part */ + register int extn = 0; /* extension added? */ + register int dots = 2; /* maximum number of dots allowed */ + + while (name < path) + *str++ = *name++; /* skip past UNC header */ + + while ((c = *name++)) + { + switch ( c ) + { + case '\\': + case '/': + *str++ = '\\'; + extn = 0; /* reset extension flags */ + dots = 2; /* max 2 dots */ + left = 8; /* max length 8 for main part */ + break; + case ':': + *str++ = ':'; + extn = 0; /* reset extension flags */ + dots = 2; /* max 2 dots */ + left = 8; /* max length 8 for main part */ + break; + case '.': + if ( dots ) + { + /* Convert path components of the form .xxx to _xxx, + but leave . and .. as they are. This allows .emacs + to be read as _emacs, for example. */ + + if (! *name || + *name == '.' || + IS_DIRECTORY_SEP (*name)) + { + *str++ = '.'; + dots--; + } + else + { + *str++ = '_'; + left--; + dots = 0; + } + } + else if ( !extn ) + { + *str++ = '.'; + extn = 1; /* we've got an extension */ + left = 3; /* 3 chars in extension */ + } + else + { + /* any embedded dots after the first are converted to _ */ + *str++ = '_'; + } + break; + case '~': + case '#': /* don't lose these, they're important */ + if ( ! left ) + str[-1] = c; /* replace last character of part */ + /* FALLTHRU */ + default: + if ( left ) + { + *str++ = tolower (c); /* map to lower case (looks nicer) */ + left--; + dots = 0; /* started a path component */ + } + break; + } + } + *str = '\0'; + } + else + { + strcpy (shortname, name); + unixtodos_filename (shortname); + } + + if (pPath) + *pPath = shortname + (path - save_name); + + return shortname; +} + +static int +is_exec (const char * name) +{ + char * p = strrchr (name, '.'); + return + (p != NULL + && (stricmp (p, ".exe") == 0 || + stricmp (p, ".com") == 0 || + stricmp (p, ".bat") == 0 || + stricmp (p, ".cmd") == 0)); +} + +/* Emulate the Unix directory procedures opendir, closedir, + and readdir. We can't use the procedures supplied in sysdep.c, + so we provide them here. */ + +struct direct dir_static; /* simulated directory contents */ +static HANDLE dir_find_handle = INVALID_HANDLE_VALUE; +static int dir_is_fat; +static char dir_pathname[MAXPATHLEN+1]; +static WIN32_FIND_DATA dir_find_data; + +/* Support shares on a network resource as subdirectories of a read-only + root directory. */ +static HANDLE wnet_enum_handle = INVALID_HANDLE_VALUE; +HANDLE open_unc_volume (const char *); +char *read_unc_volume (HANDLE, char *, int); +void close_unc_volume (HANDLE); + +DIR * +opendir (char *filename) +{ + DIR *dirp; + + /* Opening is done by FindFirstFile. However, a read is inherent to + this operation, so we defer the open until read time. */ + + if (dir_find_handle != INVALID_HANDLE_VALUE) + return NULL; + if (wnet_enum_handle != INVALID_HANDLE_VALUE) + return NULL; + + if (is_unc_volume (filename)) + { + wnet_enum_handle = open_unc_volume (filename); + if (wnet_enum_handle == INVALID_HANDLE_VALUE) + return NULL; + } + + if (!(dirp = (DIR *) malloc (sizeof (DIR)))) + return NULL; + + dirp->dd_fd = 0; + dirp->dd_loc = 0; + dirp->dd_size = 0; + + strncpy (dir_pathname, map_w32_filename (filename, NULL), MAXPATHLEN); + dir_pathname[MAXPATHLEN] = '\0'; + dir_is_fat = is_fat_volume (filename, NULL); + + return dirp; +} + +void +closedir (DIR *dirp) +{ + /* If we have a find-handle open, close it. */ + if (dir_find_handle != INVALID_HANDLE_VALUE) + { + FindClose (dir_find_handle); + dir_find_handle = INVALID_HANDLE_VALUE; + } + else if (wnet_enum_handle != INVALID_HANDLE_VALUE) + { + close_unc_volume (wnet_enum_handle); + wnet_enum_handle = INVALID_HANDLE_VALUE; + } + xfree ((char *) dirp); +} + +struct direct * +readdir (DIR *dirp) +{ + if (wnet_enum_handle != INVALID_HANDLE_VALUE) + { + if (!read_unc_volume (wnet_enum_handle, + dir_find_data.cFileName, + MAX_PATH)) + return NULL; + } + /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */ + else if (dir_find_handle == INVALID_HANDLE_VALUE) + { + char filename[MAXNAMLEN + 3]; + int ln; + + strcpy (filename, dir_pathname); + ln = strlen (filename) - 1; + if (!IS_DIRECTORY_SEP (filename[ln])) + strcat (filename, "\\"); + strcat (filename, "*"); + + dir_find_handle = FindFirstFile (filename, &dir_find_data); + + if (dir_find_handle == INVALID_HANDLE_VALUE) + return NULL; + } + else + { + if (!FindNextFile (dir_find_handle, &dir_find_data)) + return NULL; + } + + /* Emacs never uses this value, so don't bother making it match + value returned by stat(). */ + dir_static.d_ino = 1; + + dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + + dir_static.d_namlen - dir_static.d_namlen % 4; + + dir_static.d_namlen = strlen (dir_find_data.cFileName); + strcpy (dir_static.d_name, dir_find_data.cFileName); + if (dir_is_fat) + _strlwr (dir_static.d_name); + else if (!NILP (Vw32_downcase_file_names)) + { + register char *p; + for (p = dir_static.d_name; *p; p++) + if (*p >= 'a' && *p <= 'z') + break; + if (!*p) + _strlwr (dir_static.d_name); + } + + return &dir_static; +} + +HANDLE +open_unc_volume (const char *path) +{ + NETRESOURCE nr; + HANDLE henum; + int result; + + nr.dwScope = RESOURCE_GLOBALNET; + nr.dwType = RESOURCETYPE_DISK; + nr.dwDisplayType = RESOURCEDISPLAYTYPE_SERVER; + nr.dwUsage = RESOURCEUSAGE_CONTAINER; + nr.lpLocalName = NULL; + nr.lpRemoteName = (LPSTR)map_w32_filename (path, NULL); + nr.lpComment = NULL; + nr.lpProvider = NULL; + + result = WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_DISK, + RESOURCEUSAGE_CONNECTABLE, &nr, &henum); + + if (result == NO_ERROR) + return henum; + else + return INVALID_HANDLE_VALUE; +} + +char * +read_unc_volume (HANDLE henum, char *readbuf, int size) +{ + DWORD count; + int result; + DWORD bufsize = 512; + char *buffer; + char *ptr; + + count = 1; + buffer = alloca (bufsize); + result = WNetEnumResource (wnet_enum_handle, &count, buffer, &bufsize); + if (result != NO_ERROR) + return NULL; + + /* WNetEnumResource returns \\resource\share...skip forward to "share". */ + ptr = ((LPNETRESOURCE) buffer)->lpRemoteName; + ptr += 2; + while (*ptr && !IS_DIRECTORY_SEP (*ptr)) ptr++; + ptr++; + + strncpy (readbuf, ptr, size); + return readbuf; +} + +void +close_unc_volume (HANDLE henum) +{ + if (henum != INVALID_HANDLE_VALUE) + WNetCloseEnum (henum); +} + +DWORD +unc_volume_file_attributes (const char *path) +{ + HANDLE henum; + DWORD attrs; + + henum = open_unc_volume (path); + if (henum == INVALID_HANDLE_VALUE) + return -1; + + attrs = FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_DIRECTORY; + + close_unc_volume (henum); + + return attrs; +} + + +/* Shadow some MSVC runtime functions to map requests for long filenames + to reasonable short names if necessary. This was originally added to + permit running Emacs on NT 3.1 on a FAT partition, which doesn't support + long file names. */ + +int +sys_access (const char * path, int mode) +{ + DWORD attributes; + + /* MSVC implementation doesn't recognize D_OK. */ + path = map_w32_filename (path, NULL); + if (is_unc_volume (path)) + { + attributes = unc_volume_file_attributes (path); + if (attributes == -1) { + errno = EACCES; + return -1; + } + } + else if ((attributes = GetFileAttributes (path)) == -1) + { + /* Should try mapping GetLastError to errno; for now just indicate + that path doesn't exist. */ + errno = EACCES; + return -1; + } + if ((mode & X_OK) != 0 && !is_exec (path)) + { + errno = EACCES; + return -1; + } + if ((mode & W_OK) != 0 && (attributes & FILE_ATTRIBUTE_READONLY) != 0) + { + errno = EACCES; + return -1; + } + if ((mode & D_OK) != 0 && (attributes & FILE_ATTRIBUTE_DIRECTORY) == 0) + { + errno = EACCES; + return -1; + } + return 0; +} + +int +sys_chdir (const char * path) +{ + return _chdir (map_w32_filename (path, NULL)); +} + +int +sys_chmod (const char * path, int mode) +{ + return _chmod (map_w32_filename (path, NULL), mode); +} + +int +sys_chown (const char *path, uid_t owner, gid_t group) +{ + if (sys_chmod (path, _S_IREAD) == -1) /* check if file exists */ + return -1; + return 0; +} + +int +sys_creat (const char * path, int mode) +{ + return _creat (map_w32_filename (path, NULL), mode); +} + +FILE * +sys_fopen(const char * path, const char * mode) +{ + int fd; + int oflag; + const char * mode_save = mode; + + /* Force all file handles to be non-inheritable. This is necessary to + ensure child processes don't unwittingly inherit handles that might + prevent future file access. */ + + if (mode[0] == 'r') + oflag = O_RDONLY; + else if (mode[0] == 'w' || mode[0] == 'a') + oflag = O_WRONLY | O_CREAT | O_TRUNC; + else + return NULL; + + /* Only do simplistic option parsing. */ + while (*++mode) + if (mode[0] == '+') + { + oflag &= ~(O_RDONLY | O_WRONLY); + oflag |= O_RDWR; + } + else if (mode[0] == 'b') + { + oflag &= ~O_TEXT; + oflag |= O_BINARY; + } + else if (mode[0] == 't') + { + oflag &= ~O_BINARY; + oflag |= O_TEXT; + } + else break; + + fd = _open (map_w32_filename (path, NULL), oflag | _O_NOINHERIT, 0644); + if (fd < 0) + return NULL; + + return _fdopen (fd, mode_save); +} + +/* This only works on NTFS volumes, but is useful to have. */ +int +sys_link (const char * old, const char * new) +{ + HANDLE fileh; + int result = -1; + char oldname[MAX_PATH], newname[MAX_PATH]; + + if (old == NULL || new == NULL) + { + errno = ENOENT; + return -1; + } + + strcpy (oldname, map_w32_filename (old, NULL)); + strcpy (newname, map_w32_filename (new, NULL)); + + fileh = CreateFile (oldname, 0, 0, NULL, OPEN_EXISTING, + FILE_FLAG_BACKUP_SEMANTICS, NULL); + if (fileh != INVALID_HANDLE_VALUE) + { + int wlen; + + /* Confusingly, the "alternate" stream name field does not apply + when restoring a hard link, and instead contains the actual + stream data for the link (ie. the name of the link to create). + The WIN32_STREAM_ID structure before the cStreamName field is + the stream header, which is then immediately followed by the + stream data. */ + + struct { + WIN32_STREAM_ID wid; + WCHAR wbuffer[MAX_PATH]; /* extra space for link name */ + } data; + + wlen = MultiByteToWideChar (CP_ACP, MB_PRECOMPOSED, newname, -1, + data.wid.cStreamName, MAX_PATH); + if (wlen > 0) + { + LPVOID context = NULL; + DWORD wbytes = 0; + + data.wid.dwStreamId = BACKUP_LINK; + data.wid.dwStreamAttributes = 0; + data.wid.Size.LowPart = wlen * sizeof(WCHAR); + data.wid.Size.HighPart = 0; + data.wid.dwStreamNameSize = 0; + + if (BackupWrite (fileh, (LPBYTE)&data, + offsetof (WIN32_STREAM_ID, cStreamName) + + data.wid.Size.LowPart, + &wbytes, FALSE, FALSE, &context) + && BackupWrite (fileh, NULL, 0, &wbytes, TRUE, FALSE, &context)) + { + /* succeeded */ + result = 0; + } + else + { + /* Should try mapping GetLastError to errno; for now just + indicate a general error (eg. links not supported). */ + errno = EINVAL; // perhaps EMLINK? + } + } + + CloseHandle (fileh); + } + else + errno = ENOENT; + + return result; +} + +int +sys_mkdir (const char * path) +{ + return _mkdir (map_w32_filename (path, NULL)); +} + +/* Because of long name mapping issues, we need to implement this + ourselves. Also, MSVC's _mktemp returns NULL when it can't generate + a unique name, instead of setting the input template to an empty + string. + + Standard algorithm seems to be use pid or tid with a letter on the + front (in place of the 6 X's) and cycle through the letters to find a + unique name. We extend that to allow any reasonable character as the + first of the 6 X's. */ +char * +sys_mktemp (char * template) +{ + char * p; + int i; + unsigned uid = GetCurrentThreadId (); + static char first_char[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#"; + + if (template == NULL) + return NULL; + p = template + strlen (template); + i = 5; + /* replace up to the last 5 X's with uid in decimal */ + while (--p >= template && p[0] == 'X' && --i >= 0) + { + p[0] = '0' + uid % 10; + uid /= 10; + } + + if (i < 0 && p[0] == 'X') + { + i = 0; + do + { + int save_errno = errno; + p[0] = first_char[i]; + if (sys_access (template, 0) < 0) + { + errno = save_errno; + return template; + } + } + while (++i < sizeof (first_char)); + } + + /* Template is badly formed or else we can't generate a unique name, + so return empty string */ + template[0] = 0; + return template; +} + +int +sys_open (const char * path, int oflag, int mode) +{ + const char* mpath = map_w32_filename (path, NULL); + /* Try to open file without _O_CREAT, to be able to write to hidden + and system files. Force all file handles to be + non-inheritable. */ + int res = _open (mpath, (oflag & ~_O_CREAT) | _O_NOINHERIT, mode); + if (res >= 0) + return res; + return _open (mpath, oflag | _O_NOINHERIT, mode); +} + +int +sys_rename (const char * oldname, const char * newname) +{ + BOOL result; + char temp[MAX_PATH]; + + /* MoveFile on Windows 95 doesn't correctly change the short file name + alias in a number of circumstances (it is not easy to predict when + just by looking at oldname and newname, unfortunately). In these + cases, renaming through a temporary name avoids the problem. + + A second problem on Windows 95 is that renaming through a temp name when + newname is uppercase fails (the final long name ends up in + lowercase, although the short alias might be uppercase) UNLESS the + long temp name is not 8.3. + + So, on Windows 95 we always rename through a temp name, and we make sure + the temp name has a long extension to ensure correct renaming. */ + + strcpy (temp, map_w32_filename (oldname, NULL)); + + if (os_subtype == OS_WIN95) + { + char * o; + char * p; + int i = 0; + + oldname = map_w32_filename (oldname, NULL); + if (o = strrchr (oldname, '\\')) + o++; + else + o = (char *) oldname; + + if (p = strrchr (temp, '\\')) + p++; + else + p = temp; + + do + { + /* Force temp name to require a manufactured 8.3 alias - this + seems to make the second rename work properly. */ + sprintf (p, "_.%s.%u", o, i); + i++; + result = rename (oldname, temp); + } + /* This loop must surely terminate! */ + while (result < 0 && errno == EEXIST); + if (result < 0) + return -1; + } + + /* Emulate Unix behaviour - newname is deleted if it already exists + (at least if it is a file; don't do this for directories). + + Since we mustn't do this if we are just changing the case of the + file name (we would end up deleting the file we are trying to + rename!), we let rename detect if the destination file already + exists - that way we avoid the possible pitfalls of trying to + determine ourselves whether two names really refer to the same + file, which is not always possible in the general case. (Consider + all the permutations of shared or subst'd drives, etc.) */ + + newname = map_w32_filename (newname, NULL); + result = rename (temp, newname); + + if (result < 0 + && errno == EEXIST + && _chmod (newname, 0666) == 0 + && _unlink (newname) == 0) + result = rename (temp, newname); + + return result; +} + +int +sys_rmdir (const char * path) +{ + return _rmdir (map_w32_filename (path, NULL)); +} + +int +sys_unlink (const char * path) +{ + path = map_w32_filename (path, NULL); + + /* On Unix, unlink works without write permission. */ + _chmod (path, 0666); + return _unlink (path); +} + +static FILETIME utc_base_ft; +static long double utc_base; +static int init = 0; + +static time_t +convert_time (FILETIME ft) +{ + long double ret; + + if (!init) + { + /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ + SYSTEMTIME st; + + st.wYear = 1970; + st.wMonth = 1; + st.wDay = 1; + st.wHour = 0; + st.wMinute = 0; + st.wSecond = 0; + st.wMilliseconds = 0; + + SystemTimeToFileTime (&st, &utc_base_ft); + utc_base = (long double) utc_base_ft.dwHighDateTime + * 4096 * 1024 * 1024 + utc_base_ft.dwLowDateTime; + init = 1; + } + + if (CompareFileTime (&ft, &utc_base_ft) < 0) + return 0; + + ret = (long double) ft.dwHighDateTime * 4096 * 1024 * 1024 + ft.dwLowDateTime; + ret -= utc_base; + return (time_t) (ret * 1e-7); +} + +void +convert_from_time_t (time_t time, FILETIME * pft) +{ + long double tmp; + + if (!init) + { + /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ + SYSTEMTIME st; + + st.wYear = 1970; + st.wMonth = 1; + st.wDay = 1; + st.wHour = 0; + st.wMinute = 0; + st.wSecond = 0; + st.wMilliseconds = 0; + + SystemTimeToFileTime (&st, &utc_base_ft); + utc_base = (long double) utc_base_ft.dwHighDateTime + * 4096 * 1024 * 1024 + utc_base_ft.dwLowDateTime; + init = 1; + } + + /* time in 100ns units since 1-Jan-1601 */ + tmp = (long double) time * 1e7 + utc_base; + pft->dwHighDateTime = (DWORD) (tmp / (4096.0 * 1024 * 1024)); + pft->dwLowDateTime = (DWORD) (tmp - (4096.0 * 1024 * 1024) * pft->dwHighDateTime); +} + +#if 0 +/* No reason to keep this; faking inode values either by hashing or even + using the file index from GetInformationByHandle, is not perfect and + so by default Emacs doesn't use the inode values on Windows. + Instead, we now determine file-truename correctly (except for + possible drive aliasing etc). */ + +/* Modified version of "PJW" algorithm (see the "Dragon" compiler book). */ +static unsigned +hashval (const unsigned char * str) +{ + unsigned h = 0; + while (*str) + { + h = (h << 4) + *str++; + h ^= (h >> 28); + } + return h; +} + +/* Return the hash value of the canonical pathname, excluding the + drive/UNC header, to get a hopefully unique inode number. */ +static DWORD +generate_inode_val (const char * name) +{ + char fullname[ MAX_PATH ]; + char * p; + unsigned hash; + + /* Get the truly canonical filename, if it exists. (Note: this + doesn't resolve aliasing due to subst commands, or recognise hard + links. */ + if (!w32_get_long_filename ((char *)name, fullname, MAX_PATH)) + abort (); + + parse_root (fullname, &p); + /* Normal W32 filesystems are still case insensitive. */ + _strlwr (p); + return hashval (p); +} + +#endif + +/* MSVC stat function can't cope with UNC names and has other bugs, so + replace it with our own. This also allows us to calculate consistent + inode values without hacks in the main Emacs code. */ +int +stat (const char * path, struct stat * buf) +{ + char *name, *r; + WIN32_FIND_DATA wfd; + HANDLE fh; + DWORD fake_inode; + int permission; + int len; + int rootdir = FALSE; + + if (path == NULL || buf == NULL) + { + errno = EFAULT; + return -1; + } + + name = (char *) map_w32_filename (path, &path); + /* must be valid filename, no wild cards or other invalid characters */ + if (strpbrk (name, "*?|<>\"")) + { + errno = ENOENT; + return -1; + } + + /* If name is "c:/.." or "/.." then stat "c:/" or "/". */ + r = IS_DEVICE_SEP (name[1]) ? &name[2] : name; + if (IS_DIRECTORY_SEP (r[0]) && r[1] == '.' && r[2] == '.' && r[3] == '\0') + { + r[1] = r[2] = '\0'; + } + + /* Remove trailing directory separator, unless name is the root + directory of a drive or UNC volume in which case ensure there + is a trailing separator. */ + len = strlen (name); + rootdir = (path >= name + len - 1 + && (IS_DIRECTORY_SEP (*path) || *path == 0)); + name = strcpy (alloca (len + 2), name); + + if (is_unc_volume (name)) + { + DWORD attrs = unc_volume_file_attributes (name); + + if (attrs == -1) + return -1; + + memset (&wfd, 0, sizeof (wfd)); + wfd.dwFileAttributes = attrs; + wfd.ftCreationTime = utc_base_ft; + wfd.ftLastAccessTime = utc_base_ft; + wfd.ftLastWriteTime = utc_base_ft; + strcpy (wfd.cFileName, name); + } + else if (rootdir) + { + if (!IS_DIRECTORY_SEP (name[len-1])) + strcat (name, "\\"); + if (GetDriveType (name) < 2) + { + errno = ENOENT; + return -1; + } + memset (&wfd, 0, sizeof (wfd)); + wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY; + wfd.ftCreationTime = utc_base_ft; + wfd.ftLastAccessTime = utc_base_ft; + wfd.ftLastWriteTime = utc_base_ft; + strcpy (wfd.cFileName, name); + } + else + { + if (IS_DIRECTORY_SEP (name[len-1])) + name[len - 1] = 0; + + /* (This is hacky, but helps when doing file completions on + network drives.) Optimize by using information available from + active readdir if possible. */ + len = strlen (dir_pathname); + if (IS_DIRECTORY_SEP (dir_pathname[len-1])) + len--; + if (dir_find_handle != INVALID_HANDLE_VALUE + && strnicmp (name, dir_pathname, len) == 0 + && IS_DIRECTORY_SEP (name[len]) + && stricmp (name + len + 1, dir_static.d_name) == 0) + { + /* This was the last entry returned by readdir. */ + wfd = dir_find_data; + } + else + { + fh = FindFirstFile (name, &wfd); + if (fh == INVALID_HANDLE_VALUE) + { + errno = ENOENT; + return -1; + } + FindClose (fh); + } + } + + if (!NILP (Vw32_get_true_file_attributes) + /* No access rights required to get info. */ + && (fh = CreateFile (name, 0, 0, NULL, OPEN_EXISTING, + FILE_FLAG_BACKUP_SEMANTICS, NULL)) + != INVALID_HANDLE_VALUE) + { + /* This is more accurate in terms of gettting the correct number + of links, but is quite slow (it is noticable when Emacs is + making a list of file name completions). */ + BY_HANDLE_FILE_INFORMATION info; + + if (GetFileInformationByHandle (fh, &info)) + { + buf->st_nlink = info.nNumberOfLinks; + /* Might as well use file index to fake inode values, but this + is not guaranteed to be unique unless we keep a handle open + all the time (even then there are situations where it is + not unique). Reputedly, there are at most 48 bits of info + (on NTFS, presumably less on FAT). */ + fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; + } + else + { + buf->st_nlink = 1; + fake_inode = 0; + } + + if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) + { + buf->st_mode = _S_IFDIR; + } + else + { + switch (GetFileType (fh)) + { + case FILE_TYPE_DISK: + buf->st_mode = _S_IFREG; + break; + case FILE_TYPE_PIPE: + buf->st_mode = _S_IFIFO; + break; + case FILE_TYPE_CHAR: + case FILE_TYPE_UNKNOWN: + default: + buf->st_mode = _S_IFCHR; + } + } + CloseHandle (fh); + } + else + { + /* Don't bother to make this information more accurate. */ + buf->st_mode = (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? + _S_IFDIR : _S_IFREG; + buf->st_nlink = 1; + fake_inode = 0; + } + +#if 0 + /* Not sure if there is any point in this. */ + if (!NILP (Vw32_generate_fake_inodes)) + fake_inode = generate_inode_val (name); + else if (fake_inode == 0) + { + /* For want of something better, try to make everything unique. */ + static DWORD gen_num = 0; + fake_inode = ++gen_num; + } +#endif + + /* MSVC defines _ino_t to be short; other libc's might not. */ + if (sizeof (buf->st_ino) == 2) + buf->st_ino = fake_inode ^ (fake_inode >> 16); + else + buf->st_ino = fake_inode; + + /* consider files to belong to current user */ + buf->st_uid = the_passwd.pw_uid; + buf->st_gid = the_passwd.pw_gid; + + /* volume_info is set indirectly by map_w32_filename */ + buf->st_dev = volume_info.serialnum; + buf->st_rdev = volume_info.serialnum; + + + buf->st_size = wfd.nFileSizeLow; + + /* Convert timestamps to Unix format. */ + buf->st_mtime = convert_time (wfd.ftLastWriteTime); + buf->st_atime = convert_time (wfd.ftLastAccessTime); + if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; + buf->st_ctime = convert_time (wfd.ftCreationTime); + if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; + + /* determine rwx permissions */ + if (wfd.dwFileAttributes & FILE_ATTRIBUTE_READONLY) + permission = _S_IREAD; + else + permission = _S_IREAD | _S_IWRITE; + + if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) + permission |= _S_IEXEC; + else if (is_exec (name)) + permission |= _S_IEXEC; + + buf->st_mode |= permission | (permission >> 3) | (permission >> 6); + + return 0; +} + +/* Provide fstat and utime as well as stat for consistent handling of + file timestamps. */ +int +fstat (int desc, struct stat * buf) +{ + HANDLE fh = (HANDLE) _get_osfhandle (desc); + BY_HANDLE_FILE_INFORMATION info; + DWORD fake_inode; + int permission; + + switch (GetFileType (fh) & ~FILE_TYPE_REMOTE) + { + case FILE_TYPE_DISK: + buf->st_mode = _S_IFREG; + if (!GetFileInformationByHandle (fh, &info)) + { + errno = EACCES; + return -1; + } + break; + case FILE_TYPE_PIPE: + buf->st_mode = _S_IFIFO; + goto non_disk; + case FILE_TYPE_CHAR: + case FILE_TYPE_UNKNOWN: + default: + buf->st_mode = _S_IFCHR; + non_disk: + memset (&info, 0, sizeof (info)); + info.dwFileAttributes = 0; + info.ftCreationTime = utc_base_ft; + info.ftLastAccessTime = utc_base_ft; + info.ftLastWriteTime = utc_base_ft; + } + + if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) + buf->st_mode = _S_IFDIR; + + buf->st_nlink = info.nNumberOfLinks; + /* Might as well use file index to fake inode values, but this + is not guaranteed to be unique unless we keep a handle open + all the time (even then there are situations where it is + not unique). Reputedly, there are at most 48 bits of info + (on NTFS, presumably less on FAT). */ + fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; + + /* MSVC defines _ino_t to be short; other libc's might not. */ + if (sizeof (buf->st_ino) == 2) + buf->st_ino = fake_inode ^ (fake_inode >> 16); + else + buf->st_ino = fake_inode; + + /* consider files to belong to current user */ + buf->st_uid = 0; + buf->st_gid = 0; + + buf->st_dev = info.dwVolumeSerialNumber; + buf->st_rdev = info.dwVolumeSerialNumber; + + buf->st_size = info.nFileSizeLow; + + /* Convert timestamps to Unix format. */ + buf->st_mtime = convert_time (info.ftLastWriteTime); + buf->st_atime = convert_time (info.ftLastAccessTime); + if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; + buf->st_ctime = convert_time (info.ftCreationTime); + if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; + + /* determine rwx permissions */ + if (info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) + permission = _S_IREAD; + else + permission = _S_IREAD | _S_IWRITE; + + if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) + permission |= _S_IEXEC; + else + { +#if 0 /* no way of knowing the filename */ + char * p = strrchr (name, '.'); + if (p != NULL && + (stricmp (p, ".exe") == 0 || + stricmp (p, ".com") == 0 || + stricmp (p, ".bat") == 0 || + stricmp (p, ".cmd") == 0)) + permission |= _S_IEXEC; +#endif + } + + buf->st_mode |= permission | (permission >> 3) | (permission >> 6); + + return 0; +} + +int +utime (const char *name, struct utimbuf *times) +{ + struct utimbuf deftime; + HANDLE fh; + FILETIME mtime; + FILETIME atime; + + if (times == NULL) + { + deftime.modtime = deftime.actime = time (NULL); + times = &deftime; + } + + /* Need write access to set times. */ + fh = CreateFile (name, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, + 0, OPEN_EXISTING, 0, NULL); + if (fh) + { + convert_from_time_t (times->actime, &atime); + convert_from_time_t (times->modtime, &mtime); + if (!SetFileTime (fh, NULL, &atime, &mtime)) + { + CloseHandle (fh); + errno = EACCES; + return -1; + } + CloseHandle (fh); + } + else + { + errno = EINVAL; + return -1; + } + return 0; +} + +#ifdef HAVE_SOCKETS + +/* Wrappers for winsock functions to map between our file descriptors + and winsock's handles; also set h_errno for convenience. + + To allow Emacs to run on systems which don't have winsock support + installed, we dynamically link to winsock on startup if present, and + otherwise provide the minimum necessary functionality + (eg. gethostname). */ + +/* function pointers for relevant socket functions */ +int (PASCAL *pfn_WSAStartup) (WORD wVersionRequired, LPWSADATA lpWSAData); +void (PASCAL *pfn_WSASetLastError) (int iError); +int (PASCAL *pfn_WSAGetLastError) (void); +int (PASCAL *pfn_socket) (int af, int type, int protocol); +int (PASCAL *pfn_bind) (SOCKET s, const struct sockaddr *addr, int namelen); +int (PASCAL *pfn_connect) (SOCKET s, const struct sockaddr *addr, int namelen); +int (PASCAL *pfn_ioctlsocket) (SOCKET s, long cmd, u_long *argp); +int (PASCAL *pfn_recv) (SOCKET s, char * buf, int len, int flags); +int (PASCAL *pfn_send) (SOCKET s, const char * buf, int len, int flags); +int (PASCAL *pfn_closesocket) (SOCKET s); +int (PASCAL *pfn_shutdown) (SOCKET s, int how); +int (PASCAL *pfn_WSACleanup) (void); + +u_short (PASCAL *pfn_htons) (u_short hostshort); +u_short (PASCAL *pfn_ntohs) (u_short netshort); +unsigned long (PASCAL *pfn_inet_addr) (const char * cp); +int (PASCAL *pfn_gethostname) (char * name, int namelen); +struct hostent * (PASCAL *pfn_gethostbyname) (const char * name); +struct servent * (PASCAL *pfn_getservbyname) (const char * name, const char * proto); +int (PASCAL *pfn_getpeername) (SOCKET s, struct sockaddr *addr, int * namelen); +int (PASCAL *pfn_setsockopt) (SOCKET s, int level, int optname, + const char * optval, int optlen); +int (PASCAL *pfn_listen) (SOCKET s, int backlog); +int (PASCAL *pfn_getsockname) (SOCKET s, struct sockaddr * name, + int * namelen); +SOCKET (PASCAL *pfn_accept) (SOCKET s, struct sockaddr * addr, int * addrlen); +int (PASCAL *pfn_recvfrom) (SOCKET s, char * buf, int len, int flags, + struct sockaddr * from, int * fromlen); +int (PASCAL *pfn_sendto) (SOCKET s, const char * buf, int len, int flags, + const struct sockaddr * to, int tolen); + +/* SetHandleInformation is only needed to make sockets non-inheritable. */ +BOOL (WINAPI *pfn_SetHandleInformation) (HANDLE object, DWORD mask, DWORD flags); +#ifndef HANDLE_FLAG_INHERIT +#define HANDLE_FLAG_INHERIT 1 +#endif + +HANDLE winsock_lib; +static int winsock_inuse; + +BOOL +term_winsock (void) +{ + if (winsock_lib != NULL && winsock_inuse == 0) + { + /* Not sure what would cause WSAENETDOWN, or even if it can happen + after WSAStartup returns successfully, but it seems reasonable + to allow unloading winsock anyway in that case. */ + if (pfn_WSACleanup () == 0 || + pfn_WSAGetLastError () == WSAENETDOWN) + { + if (FreeLibrary (winsock_lib)) + winsock_lib = NULL; + return TRUE; + } + } + return FALSE; +} + +BOOL +init_winsock (int load_now) +{ + WSADATA winsockData; + + if (winsock_lib != NULL) + return TRUE; + + pfn_SetHandleInformation = NULL; + pfn_SetHandleInformation + = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"), + "SetHandleInformation"); + + winsock_lib = LoadLibrary ("wsock32.dll"); + + if (winsock_lib != NULL) + { + /* dynamically link to socket functions */ + +#define LOAD_PROC(fn) \ + if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \ + goto fail; + + LOAD_PROC( WSAStartup ); + LOAD_PROC( WSASetLastError ); + LOAD_PROC( WSAGetLastError ); + LOAD_PROC( socket ); + LOAD_PROC( bind ); + LOAD_PROC( connect ); + LOAD_PROC( ioctlsocket ); + LOAD_PROC( recv ); + LOAD_PROC( send ); + LOAD_PROC( closesocket ); + LOAD_PROC( shutdown ); + LOAD_PROC( htons ); + LOAD_PROC( ntohs ); + LOAD_PROC( inet_addr ); + LOAD_PROC( gethostname ); + LOAD_PROC( gethostbyname ); + LOAD_PROC( getservbyname ); + LOAD_PROC( getpeername ); + LOAD_PROC( WSACleanup ); + LOAD_PROC( setsockopt ); + LOAD_PROC( listen ); + LOAD_PROC( getsockname ); + LOAD_PROC( accept ); + LOAD_PROC( recvfrom ); + LOAD_PROC( sendto ); +#undef LOAD_PROC + + /* specify version 1.1 of winsock */ + if (pfn_WSAStartup (0x101, &winsockData) == 0) + { + if (winsockData.wVersion != 0x101) + goto fail; + + if (!load_now) + { + /* Report that winsock exists and is usable, but leave + socket functions disabled. I am assuming that calling + WSAStartup does not require any network interaction, + and in particular does not cause or require a dial-up + connection to be established. */ + + pfn_WSACleanup (); + FreeLibrary (winsock_lib); + winsock_lib = NULL; + } + winsock_inuse = 0; + return TRUE; + } + + fail: + FreeLibrary (winsock_lib); + winsock_lib = NULL; + } + + return FALSE; +} + + +int h_errno = 0; + +/* function to set h_errno for compatability; map winsock error codes to + normal system codes where they overlap (non-overlapping definitions + are already in */ +static void set_errno () +{ + if (winsock_lib == NULL) + h_errno = EINVAL; + else + h_errno = pfn_WSAGetLastError (); + + switch (h_errno) + { + case WSAEACCES: h_errno = EACCES; break; + case WSAEBADF: h_errno = EBADF; break; + case WSAEFAULT: h_errno = EFAULT; break; + case WSAEINTR: h_errno = EINTR; break; + case WSAEINVAL: h_errno = EINVAL; break; + case WSAEMFILE: h_errno = EMFILE; break; + case WSAENAMETOOLONG: h_errno = ENAMETOOLONG; break; + case WSAENOTEMPTY: h_errno = ENOTEMPTY; break; + } + errno = h_errno; +} + +static void check_errno () +{ + if (h_errno == 0 && winsock_lib != NULL) + pfn_WSASetLastError (0); +} + +/* Extend strerror to handle the winsock-specific error codes. */ +struct { + int errnum; + char * msg; +} _wsa_errlist[] = { + WSAEINTR , "Interrupted function call", + WSAEBADF , "Bad file descriptor", + WSAEACCES , "Permission denied", + WSAEFAULT , "Bad address", + WSAEINVAL , "Invalid argument", + WSAEMFILE , "Too many open files", + + WSAEWOULDBLOCK , "Resource temporarily unavailable", + WSAEINPROGRESS , "Operation now in progress", + WSAEALREADY , "Operation already in progress", + WSAENOTSOCK , "Socket operation on non-socket", + WSAEDESTADDRREQ , "Destination address required", + WSAEMSGSIZE , "Message too long", + WSAEPROTOTYPE , "Protocol wrong type for socket", + WSAENOPROTOOPT , "Bad protocol option", + WSAEPROTONOSUPPORT , "Protocol not supported", + WSAESOCKTNOSUPPORT , "Socket type not supported", + WSAEOPNOTSUPP , "Operation not supported", + WSAEPFNOSUPPORT , "Protocol family not supported", + WSAEAFNOSUPPORT , "Address family not supported by protocol family", + WSAEADDRINUSE , "Address already in use", + WSAEADDRNOTAVAIL , "Cannot assign requested address", + WSAENETDOWN , "Network is down", + WSAENETUNREACH , "Network is unreachable", + WSAENETRESET , "Network dropped connection on reset", + WSAECONNABORTED , "Software caused connection abort", + WSAECONNRESET , "Connection reset by peer", + WSAENOBUFS , "No buffer space available", + WSAEISCONN , "Socket is already connected", + WSAENOTCONN , "Socket is not connected", + WSAESHUTDOWN , "Cannot send after socket shutdown", + WSAETOOMANYREFS , "Too many references", /* not sure */ + WSAETIMEDOUT , "Connection timed out", + WSAECONNREFUSED , "Connection refused", + WSAELOOP , "Network loop", /* not sure */ + WSAENAMETOOLONG , "Name is too long", + WSAEHOSTDOWN , "Host is down", + WSAEHOSTUNREACH , "No route to host", + WSAENOTEMPTY , "Buffer not empty", /* not sure */ + WSAEPROCLIM , "Too many processes", + WSAEUSERS , "Too many users", /* not sure */ + WSAEDQUOT , "Double quote in host name", /* really not sure */ + WSAESTALE , "Data is stale", /* not sure */ + WSAEREMOTE , "Remote error", /* not sure */ + + WSASYSNOTREADY , "Network subsystem is unavailable", + WSAVERNOTSUPPORTED , "WINSOCK.DLL version out of range", + WSANOTINITIALISED , "Winsock not initialized successfully", + WSAEDISCON , "Graceful shutdown in progress", +#ifdef WSAENOMORE + WSAENOMORE , "No more operations allowed", /* not sure */ + WSAECANCELLED , "Operation cancelled", /* not sure */ + WSAEINVALIDPROCTABLE , "Invalid procedure table from service provider", + WSAEINVALIDPROVIDER , "Invalid service provider version number", + WSAEPROVIDERFAILEDINIT , "Unable to initialize a service provider", + WSASYSCALLFAILURE , "System call failured", + WSASERVICE_NOT_FOUND , "Service not found", /* not sure */ + WSATYPE_NOT_FOUND , "Class type not found", + WSA_E_NO_MORE , "No more resources available", /* really not sure */ + WSA_E_CANCELLED , "Operation already cancelled", /* really not sure */ + WSAEREFUSED , "Operation refused", /* not sure */ +#endif + + WSAHOST_NOT_FOUND , "Host not found", + WSATRY_AGAIN , "Authoritative host not found during name lookup", + WSANO_RECOVERY , "Non-recoverable error during name lookup", + WSANO_DATA , "Valid name, no data record of requested type", + + -1, NULL +}; + +char * +sys_strerror(int error_no) +{ + int i; + static char unknown_msg[40]; + + if (error_no >= 0 && error_no < sys_nerr) + return sys_errlist[error_no]; + + for (i = 0; _wsa_errlist[i].errnum >= 0; i++) + if (_wsa_errlist[i].errnum == error_no) + return _wsa_errlist[i].msg; + + sprintf(unknown_msg, "Unidentified error: %d", error_no); + return unknown_msg; +} + +/* [andrewi 3-May-96] I've had conflicting results using both methods, + but I believe the method of keeping the socket handle separate (and + insuring it is not inheritable) is the correct one. */ + +//#define SOCK_REPLACE_HANDLE + +#ifdef SOCK_REPLACE_HANDLE +#define SOCK_HANDLE(fd) ((SOCKET) _get_osfhandle (fd)) +#else +#define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd) +#endif + +int socket_to_fd (SOCKET s); + +int +sys_socket(int af, int type, int protocol) +{ + SOCKET s; + + if (winsock_lib == NULL) + { + h_errno = ENETDOWN; + return INVALID_SOCKET; + } + + check_errno (); + + /* call the real socket function */ + s = pfn_socket (af, type, protocol); + + if (s != INVALID_SOCKET) + return socket_to_fd (s); + + set_errno (); + return -1; +} + +/* Convert a SOCKET to a file descriptor. */ +int +socket_to_fd (SOCKET s) +{ + int fd; + child_process * cp; + + /* Although under NT 3.5 _open_osfhandle will accept a socket + handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT, + that does not work under NT 3.1. However, we can get the same + effect by using a backdoor function to replace an existing + descriptor handle with the one we want. */ + + /* allocate a file descriptor (with appropriate flags) */ + fd = _open ("NUL:", _O_RDWR); + if (fd >= 0) + { +#ifdef SOCK_REPLACE_HANDLE + /* now replace handle to NUL with our socket handle */ + CloseHandle ((HANDLE) _get_osfhandle (fd)); + _free_osfhnd (fd); + _set_osfhnd (fd, s); + /* setmode (fd, _O_BINARY); */ +#else + /* Make a non-inheritable copy of the socket handle. Note + that it is possible that sockets aren't actually kernel + handles, which appears to be the case on Windows 9x when + the MS Proxy winsock client is installed. */ + { + /* Apparently there is a bug in NT 3.51 with some service + packs, which prevents using DuplicateHandle to make a + socket handle non-inheritable (causes WSACleanup to + hang). The work-around is to use SetHandleInformation + instead if it is available and implemented. */ + if (pfn_SetHandleInformation) + { + pfn_SetHandleInformation ((HANDLE) s, HANDLE_FLAG_INHERIT, 0); + } + else + { + HANDLE parent = GetCurrentProcess (); + HANDLE new_s = INVALID_HANDLE_VALUE; + + if (DuplicateHandle (parent, + (HANDLE) s, + parent, + &new_s, + 0, + FALSE, + DUPLICATE_SAME_ACCESS)) + { + /* It is possible that DuplicateHandle succeeds even + though the socket wasn't really a kernel handle, + because a real handle has the same value. So + test whether the new handle really is a socket. */ + long nonblocking = 0; + if (pfn_ioctlsocket ((SOCKET) new_s, FIONBIO, &nonblocking) == 0) + { + pfn_closesocket (s); + s = (SOCKET) new_s; + } + else + { + CloseHandle (new_s); + } + } + } + } + fd_info[fd].hnd = (HANDLE) s; +#endif + + /* set our own internal flags */ + fd_info[fd].flags = FILE_SOCKET | FILE_BINARY | FILE_READ | FILE_WRITE; + + cp = new_child (); + if (cp) + { + cp->fd = fd; + cp->status = STATUS_READ_ACKNOWLEDGED; + + /* attach child_process to fd_info */ + if (fd_info[ fd ].cp != NULL) + { + DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd)); + abort (); + } + + fd_info[ fd ].cp = cp; + + /* success! */ + winsock_inuse++; /* count open sockets */ + return fd; + } + + /* clean up */ + _close (fd); + } + pfn_closesocket (s); + h_errno = EMFILE; + return -1; +} + + +int +sys_bind (int s, const struct sockaddr * addr, int namelen) +{ + if (winsock_lib == NULL) + { + h_errno = ENOTSOCK; + return SOCKET_ERROR; + } + + check_errno (); + if (fd_info[s].flags & FILE_SOCKET) + { + int rc = pfn_bind (SOCK_HANDLE (s), addr, namelen); + if (rc == SOCKET_ERROR) + set_errno (); + return rc; + } + h_errno = ENOTSOCK; + return SOCKET_ERROR; +} + + +int +sys_connect (int s, const struct sockaddr * name, int namelen) +{ + if (winsock_lib == NULL) + { + h_errno = ENOTSOCK; + return SOCKET_ERROR; + } + + check_errno (); + if (fd_info[s].flags & FILE_SOCKET) + { + int rc = pfn_connect (SOCK_HANDLE (s), name, namelen); + if (rc == SOCKET_ERROR) + set_errno (); + return rc; + } + h_errno = ENOTSOCK; + return SOCKET_ERROR; +} + +u_short +sys_htons (u_short hostshort) +{ + return (winsock_lib != NULL) ? + pfn_htons (hostshort) : hostshort; +} + +u_short +sys_ntohs (u_short netshort) +{ + return (winsock_lib != NULL) ? + pfn_ntohs (netshort) : netshort; +} + +unsigned long +sys_inet_addr (const char * cp) +{ + return (winsock_lib != NULL) ? + pfn_inet_addr (cp) : INADDR_NONE; +} + +int +sys_gethostname (char * name, int namelen) +{ + if (winsock_lib != NULL) + return pfn_gethostname (name, namelen); + + if (namelen > MAX_COMPUTERNAME_LENGTH) + return !GetComputerName (name, (DWORD *)&namelen); + + h_errno = EFAULT; + return SOCKET_ERROR; +} + +struct hostent * +sys_gethostbyname(const char * name) +{ + struct hostent * host; + + if (winsock_lib == NULL) + { + h_errno = ENETDOWN; + return NULL; + } + + check_errno (); + host = pfn_gethostbyname (name); + if (!host) + set_errno (); + return host; +} + +struct servent * +sys_getservbyname(const char * name, const char * proto) +{ + struct servent * serv; + + if (winsock_lib == NULL) + { + h_errno = ENETDOWN; + return NULL; + } + + check_errno (); + serv = pfn_getservbyname (name, proto); + if (!serv) + set_errno (); + return serv; +} + +int +sys_getpeername (int s, struct sockaddr *addr, int * namelen) +{ + if (winsock_lib == NULL) + { + h_errno = ENETDOWN; + return SOCKET_ERROR; + } + + check_errno (); + if (fd_info[s].flags & FILE_SOCKET) + { + int rc = pfn_getpeername (SOCK_HANDLE (s), addr, namelen); + if (rc == SOCKET_ERROR) + set_errno (); + return rc; + } + h_errno = ENOTSOCK; + return SOCKET_ERROR; +} + + +int +sys_shutdown (int s, int how) +{ + if (winsock_lib == NULL) + { + h_errno = ENETDOWN; + return SOCKET_ERROR; + } + + check_errno (); + if (fd_info[s].flags & FILE_SOCKET) + { + int rc = pfn_shutdown (SOCK_HANDLE (s), how); + if (rc == SOCKET_ERROR) + set_errno (); + return rc; + } + h_errno = ENOTSOCK; + return SOCKET_ERROR; +} + +int +sys_setsockopt (int s, int level, int optname, const void * optval, int optlen) +{ + if (winsock_lib == NULL) + { + h_errno = ENETDOWN; + return SOCKET_ERROR; + } + + check_errno (); + if (fd_info[s].flags & FILE_SOCKET) + { + int rc = pfn_setsockopt (SOCK_HANDLE (s), level, optname, + (const char *)optval, optlen); + if (rc == SOCKET_ERROR) + set_errno (); + return rc; + } + h_errno = ENOTSOCK; + return SOCKET_ERROR; +} + +int +sys_listen (int s, int backlog) +{ + if (winsock_lib == NULL) + { + h_errno = ENETDOWN; + return SOCKET_ERROR; + } + + check_errno (); + if (fd_info[s].flags & FILE_SOCKET) + { + int rc = pfn_listen (SOCK_HANDLE (s), backlog); + if (rc == SOCKET_ERROR) + set_errno (); + return rc; + } + h_errno = ENOTSOCK; + return SOCKET_ERROR; +} + +int +sys_getsockname (int s, struct sockaddr * name, int * namelen) +{ + if (winsock_lib == NULL) + { + h_errno = ENETDOWN; + return SOCKET_ERROR; + } + + check_errno (); + if (fd_info[s].flags & FILE_SOCKET) + { + int rc = pfn_getsockname (SOCK_HANDLE (s), name, namelen); + if (rc == SOCKET_ERROR) + set_errno (); + return rc; + } + h_errno = ENOTSOCK; + return SOCKET_ERROR; +} + +int +sys_accept (int s, struct sockaddr * addr, int * addrlen) +{ + if (winsock_lib == NULL) + { + h_errno = ENETDOWN; + return -1; + } + + check_errno (); + if (fd_info[s].flags & FILE_SOCKET) + { + SOCKET t = pfn_accept (SOCK_HANDLE (s), addr, addrlen); + if (t != INVALID_SOCKET) + return socket_to_fd (t); + + set_errno (); + return -1; + } + h_errno = ENOTSOCK; + return -1; +} + +int +sys_recvfrom (int s, char * buf, int len, int flags, + struct sockaddr * from, int * fromlen) +{ + if (winsock_lib == NULL) + { + h_errno = ENETDOWN; + return SOCKET_ERROR; + } + + check_errno (); + if (fd_info[s].flags & FILE_SOCKET) + { + int rc = pfn_recvfrom (SOCK_HANDLE (s), buf, len, flags, from, fromlen); + if (rc == SOCKET_ERROR) + set_errno (); + return rc; + } + h_errno = ENOTSOCK; + return SOCKET_ERROR; +} + +int +sys_sendto (int s, const char * buf, int len, int flags, + const struct sockaddr * to, int tolen) +{ + if (winsock_lib == NULL) + { + h_errno = ENETDOWN; + return SOCKET_ERROR; + } + + check_errno (); + if (fd_info[s].flags & FILE_SOCKET) + { + int rc = pfn_sendto (SOCK_HANDLE (s), buf, len, flags, to, tolen); + if (rc == SOCKET_ERROR) + set_errno (); + return rc; + } + h_errno = ENOTSOCK; + return SOCKET_ERROR; +} + +/* Windows does not have an fcntl function. Provide an implementation + solely for making sockets non-blocking. */ +int +fcntl (int s, int cmd, int options) +{ + if (winsock_lib == NULL) + { + h_errno = ENETDOWN; + return -1; + } + + check_errno (); + if (fd_info[s].flags & FILE_SOCKET) + { + if (cmd == F_SETFL && options == O_NDELAY) + { + unsigned long nblock = 1; + int rc = pfn_ioctlsocket (SOCK_HANDLE (s), FIONBIO, &nblock); + if (rc == SOCKET_ERROR) + set_errno(); + /* Keep track of the fact that we set this to non-blocking. */ + fd_info[s].flags |= FILE_NDELAY; + return rc; + } + else + { + h_errno = EINVAL; + return SOCKET_ERROR; + } + } + h_errno = ENOTSOCK; + return SOCKET_ERROR; +} + +#endif /* HAVE_SOCKETS */ + + +/* Shadow main io functions: we need to handle pipes and sockets more + intelligently, and implement non-blocking mode as well. */ + +int +sys_close (int fd) +{ + int rc; + + if (fd < 0) + { + errno = EBADF; + return -1; + } + + if (fd < MAXDESC && fd_info[fd].cp) + { + child_process * cp = fd_info[fd].cp; + + fd_info[fd].cp = NULL; + + if (CHILD_ACTIVE (cp)) + { + /* if last descriptor to active child_process then cleanup */ + int i; + for (i = 0; i < MAXDESC; i++) + { + if (i == fd) + continue; + if (fd_info[i].cp == cp) + break; + } + if (i == MAXDESC) + { +#ifdef HAVE_SOCKETS + if (fd_info[fd].flags & FILE_SOCKET) + { +#ifndef SOCK_REPLACE_HANDLE + if (winsock_lib == NULL) abort (); + + pfn_shutdown (SOCK_HANDLE (fd), 2); + rc = pfn_closesocket (SOCK_HANDLE (fd)); +#endif + winsock_inuse--; /* count open sockets */ + } +#endif + delete_child (cp); + } + } + } + + /* Note that sockets do not need special treatment here (at least on + NT and Windows 95 using the standard tcp/ip stacks) - it appears that + closesocket is equivalent to CloseHandle, which is to be expected + because socket handles are fully fledged kernel handles. */ + rc = _close (fd); + + if (rc == 0 && fd < MAXDESC) + fd_info[fd].flags = 0; + + return rc; +} + +int +sys_dup (int fd) +{ + int new_fd; + + new_fd = _dup (fd); + if (new_fd >= 0 && new_fd < MAXDESC) + { + /* duplicate our internal info as well */ + fd_info[new_fd] = fd_info[fd]; + } + return new_fd; +} + + +int +sys_dup2 (int src, int dst) +{ + int rc; + + if (dst < 0 || dst >= MAXDESC) + { + errno = EBADF; + return -1; + } + + /* make sure we close the destination first if it's a pipe or socket */ + if (src != dst && fd_info[dst].flags != 0) + sys_close (dst); + + rc = _dup2 (src, dst); + if (rc == 0) + { + /* duplicate our internal info as well */ + fd_info[dst] = fd_info[src]; + } + return rc; +} + +/* Unix pipe() has only one arg */ +int +sys_pipe (int * phandles) +{ + int rc; + unsigned flags; + + /* make pipe handles non-inheritable; when we spawn a child, we + replace the relevant handle with an inheritable one. Also put + pipes into binary mode; we will do text mode translation ourselves + if required. */ + rc = _pipe (phandles, 0, _O_NOINHERIT | _O_BINARY); + + if (rc == 0) + { + /* Protect against overflow, since Windows can open more handles than + our fd_info array has room for. */ + if (phandles[0] >= MAXDESC || phandles[1] >= MAXDESC) + { + _close (phandles[0]); + _close (phandles[1]); + rc = -1; + } + else + { + flags = FILE_PIPE | FILE_READ | FILE_BINARY; + fd_info[phandles[0]].flags = flags; + + flags = FILE_PIPE | FILE_WRITE | FILE_BINARY; + fd_info[phandles[1]].flags = flags; + } + } + + return rc; +} + +/* From ntproc.c */ +extern int w32_pipe_read_delay; + +/* Function to do blocking read of one byte, needed to implement + select. It is only allowed on sockets and pipes. */ +int +_sys_read_ahead (int fd) +{ + child_process * cp; + int rc; + + if (fd < 0 || fd >= MAXDESC) + return STATUS_READ_ERROR; + + cp = fd_info[fd].cp; + + if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) + return STATUS_READ_ERROR; + + if ((fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) == 0 + || (fd_info[fd].flags & FILE_READ) == 0) + { + DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe or socket!\n", fd)); + abort (); + } + + cp->status = STATUS_READ_IN_PROGRESS; + + if (fd_info[fd].flags & FILE_PIPE) + { + rc = _read (fd, &cp->chr, sizeof (char)); + + /* Give subprocess time to buffer some more output for us before + reporting that input is available; we need this because Windows 95 + connects DOS programs to pipes by making the pipe appear to be + the normal console stdout - as a result most DOS programs will + write to stdout without buffering, ie. one character at a + time. Even some W32 programs do this - "dir" in a command + shell on NT is very slow if we don't do this. */ + if (rc > 0) + { + int wait = w32_pipe_read_delay; + + if (wait > 0) + Sleep (wait); + else if (wait < 0) + while (++wait <= 0) + /* Yield remainder of our time slice, effectively giving a + temporary priority boost to the child process. */ + Sleep (0); + } + } +#ifdef HAVE_SOCKETS + else if (fd_info[fd].flags & FILE_SOCKET) + { + unsigned long nblock = 0; + /* We always want this to block, so temporarily disable NDELAY. */ + if (fd_info[fd].flags & FILE_NDELAY) + pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); + + rc = pfn_recv (SOCK_HANDLE (fd), &cp->chr, sizeof (char), 0); + + if (fd_info[fd].flags & FILE_NDELAY) + { + nblock = 1; + pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); + } + } +#endif + + if (rc == sizeof (char)) + cp->status = STATUS_READ_SUCCEEDED; + else + cp->status = STATUS_READ_FAILED; + + return cp->status; +} + +int +sys_read (int fd, char * buffer, unsigned int count) +{ + int nchars; + int to_read; + DWORD waiting; + char * orig_buffer = buffer; + + if (fd < 0) + { + errno = EBADF; + return -1; + } + + if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) + { + child_process *cp = fd_info[fd].cp; + + if ((fd_info[fd].flags & FILE_READ) == 0) + { + errno = EBADF; + return -1; + } + + nchars = 0; + + /* re-read CR carried over from last read */ + if (fd_info[fd].flags & FILE_LAST_CR) + { + if (fd_info[fd].flags & FILE_BINARY) abort (); + *buffer++ = 0x0d; + count--; + nchars++; + fd_info[fd].flags &= ~FILE_LAST_CR; + } + + /* presence of a child_process structure means we are operating in + non-blocking mode - otherwise we just call _read directly. + Note that the child_process structure might be missing because + reap_subprocess has been called; in this case the pipe is + already broken, so calling _read on it is okay. */ + if (cp) + { + int current_status = cp->status; + + switch (current_status) + { + case STATUS_READ_FAILED: + case STATUS_READ_ERROR: + /* report normal EOF if nothing in buffer */ + if (nchars <= 0) + fd_info[fd].flags |= FILE_AT_EOF; + return nchars; + + case STATUS_READ_READY: + case STATUS_READ_IN_PROGRESS: + DebPrint (("sys_read called when read is in progress\n")); + errno = EWOULDBLOCK; + return -1; + + case STATUS_READ_SUCCEEDED: + /* consume read-ahead char */ + *buffer++ = cp->chr; + count--; + nchars++; + cp->status = STATUS_READ_ACKNOWLEDGED; + ResetEvent (cp->char_avail); + + case STATUS_READ_ACKNOWLEDGED: + break; + + default: + DebPrint (("sys_read: bad status %d\n", current_status)); + errno = EBADF; + return -1; + } + + if (fd_info[fd].flags & FILE_PIPE) + { + PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, &waiting, NULL); + to_read = min (waiting, (DWORD) count); + + if (to_read > 0) + nchars += _read (fd, buffer, to_read); + } +#ifdef HAVE_SOCKETS + else /* FILE_SOCKET */ + { + if (winsock_lib == NULL) abort (); + + /* do the equivalent of a non-blocking read */ + pfn_ioctlsocket (SOCK_HANDLE (fd), FIONREAD, &waiting); + if (waiting == 0 && nchars == 0) + { + h_errno = errno = EWOULDBLOCK; + return -1; + } + + if (waiting) + { + /* always use binary mode for sockets */ + int res = pfn_recv (SOCK_HANDLE (fd), buffer, count, 0); + if (res == SOCKET_ERROR) + { + DebPrint(("sys_read.recv failed with error %d on socket %ld\n", + pfn_WSAGetLastError (), SOCK_HANDLE (fd))); + set_errno (); + return -1; + } + nchars += res; + } + } +#endif + } + else + { + int nread = _read (fd, buffer, count); + if (nread >= 0) + nchars += nread; + else if (nchars == 0) + nchars = nread; + } + + if (nchars <= 0) + fd_info[fd].flags |= FILE_AT_EOF; + /* Perform text mode translation if required. */ + else if ((fd_info[fd].flags & FILE_BINARY) == 0) + { + nchars = crlf_to_lf (nchars, orig_buffer); + /* If buffer contains only CR, return that. To be absolutely + sure we should attempt to read the next char, but in + practice a CR to be followed by LF would not appear by + itself in the buffer. */ + if (nchars > 1 && orig_buffer[nchars - 1] == 0x0d) + { + fd_info[fd].flags |= FILE_LAST_CR; + nchars--; + } + } + } + else + nchars = _read (fd, buffer, count); + + return nchars; +} + +/* For now, don't bother with a non-blocking mode */ +int +sys_write (int fd, const void * buffer, unsigned int count) +{ + int nchars; + + if (fd < 0) + { + errno = EBADF; + return -1; + } + + if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) + { + if ((fd_info[fd].flags & FILE_WRITE) == 0) + { + errno = EBADF; + return -1; + } + + /* Perform text mode translation if required. */ + if ((fd_info[fd].flags & FILE_BINARY) == 0) + { + char * tmpbuf = alloca (count * 2); + unsigned char * src = (void *)buffer; + unsigned char * dst = tmpbuf; + int nbytes = count; + + while (1) + { + unsigned char *next; + /* copy next line or remaining bytes */ + next = _memccpy (dst, src, '\n', nbytes); + if (next) + { + /* copied one line ending with '\n' */ + int copied = next - dst; + nbytes -= copied; + src += copied; + /* insert '\r' before '\n' */ + next[-1] = '\r'; + next[0] = '\n'; + dst = next + 1; + count++; + } + else + /* copied remaining partial line -> now finished */ + break; + } + buffer = tmpbuf; + } } - else if (!LookupAccountSid ((void *)0, (PSID)b, Name, &length, RefD, - &rlength, &User)) + +#ifdef HAVE_SOCKETS + if (fd < MAXDESC && fd_info[fd].flags & FILE_SOCKET) { - CloseHandle (Token); - Vuser_real_login_name = build_string ("unknown"); + unsigned long nblock = 0; + if (winsock_lib == NULL) abort (); + + /* TODO: implement select() properly so non-blocking I/O works. */ + /* For now, make sure the write blocks. */ + if (fd_info[fd].flags & FILE_NDELAY) + pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); + + nchars = pfn_send (SOCK_HANDLE (fd), buffer, count, 0); + + /* Set the socket back to non-blocking if it was before, + for other operations that support it. */ + if (fd_info[fd].flags & FILE_NDELAY) + { + nblock = 1; + pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); + } + + if (nchars == SOCKET_ERROR) + { + DebPrint(("sys_write.send failed with error %d on socket %ld\n", + pfn_WSAGetLastError (), SOCK_HANDLE (fd))); + set_errno (); + } } else - Vuser_real_login_name = build_string (Name); +#endif + nchars = _write (fd, buffer, count); + + return nchars; +} + +static void +check_windows_init_file () +{ + extern int noninteractive, inhibit_window_system; + + /* A common indication that Emacs is not installed properly is when + it cannot find the Windows installation file. If this file does + not exist in the expected place, tell the user. */ + + if (!noninteractive && !inhibit_window_system) + { + extern Lisp_Object Vwindow_system, Vload_path, Qfile_exists_p; + Lisp_Object objs[2]; + Lisp_Object full_load_path; + Lisp_Object init_file; + int fd; + + objs[0] = Vload_path; + objs[1] = decode_env_path (0, (getenv ("EMACSLOADPATH"))); + full_load_path = Fappend (2, objs); + init_file = build_string ("term/w32-win"); + fd = openp (full_load_path, init_file, Fget_load_suffixes (), NULL, Qnil); + if (fd < 0) + { + Lisp_Object load_path_print = Fprin1_to_string (full_load_path, Qnil); + char *init_file_name = SDATA (init_file); + char *load_path = SDATA (load_path_print); + char *buffer = alloca (1024 + + strlen (init_file_name) + + strlen (load_path)); + + sprintf (buffer, + "The Emacs Windows initialization file \"%s.el\" " + "could not be found in your Emacs installation. " + "Emacs checked the following directories for this file:\n" + "\n%s\n\n" + "When Emacs cannot find this file, it usually means that it " + "was not installed properly, or its distribution file was " + "not unpacked properly.\nSee the README.W32 file in the " + "top-level Emacs directory for more information.", + init_file_name, load_path); + MessageBox (NULL, + buffer, + "Emacs Abort Dialog", + MB_OK | MB_ICONEXCLAMATION | MB_TASKMODAL); + /* Use the low-level Emacs abort. */ +#undef abort + abort (); + } + else + { + _close (fd); + } + } +} + +void +term_ntproc () +{ +#ifdef HAVE_SOCKETS + /* shutdown the socket interface if necessary */ + term_winsock (); +#endif + + term_w32select (); +} + +void +init_ntproc () +{ +#ifdef HAVE_SOCKETS + /* Initialise the socket interface now if available and requested by + the user by defining PRELOAD_WINSOCK; otherwise loading will be + delayed until open-network-stream is called (w32-has-winsock can + also be used to dynamically load or reload winsock). + + Conveniently, init_environment is called before us, so + PRELOAD_WINSOCK can be set in the registry. */ + + /* Always initialize this correctly. */ + winsock_lib = NULL; + + if (getenv ("PRELOAD_WINSOCK") != NULL) + init_winsock (TRUE); +#endif + + /* Initial preparation for subprocess support: replace our standard + handles with non-inheritable versions. */ + { + HANDLE parent; + HANDLE stdin_save = INVALID_HANDLE_VALUE; + HANDLE stdout_save = INVALID_HANDLE_VALUE; + HANDLE stderr_save = INVALID_HANDLE_VALUE; + + parent = GetCurrentProcess (); + + /* ignore errors when duplicating and closing; typically the + handles will be invalid when running as a gui program. */ + DuplicateHandle (parent, + GetStdHandle (STD_INPUT_HANDLE), + parent, + &stdin_save, + 0, + FALSE, + DUPLICATE_SAME_ACCESS); + + DuplicateHandle (parent, + GetStdHandle (STD_OUTPUT_HANDLE), + parent, + &stdout_save, + 0, + FALSE, + DUPLICATE_SAME_ACCESS); + + DuplicateHandle (parent, + GetStdHandle (STD_ERROR_HANDLE), + parent, + &stderr_save, + 0, + FALSE, + DUPLICATE_SAME_ACCESS); + + fclose (stdin); + fclose (stdout); + fclose (stderr); + + if (stdin_save != INVALID_HANDLE_VALUE) + _open_osfhandle ((long) stdin_save, O_TEXT); + else + _open ("nul", O_TEXT | O_NOINHERIT | O_RDONLY); + _fdopen (0, "r"); + + if (stdout_save != INVALID_HANDLE_VALUE) + _open_osfhandle ((long) stdout_save, O_TEXT); + else + _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); + _fdopen (1, "w"); + + if (stderr_save != INVALID_HANDLE_VALUE) + _open_osfhandle ((long) stderr_save, O_TEXT); + else + _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); + _fdopen (2, "w"); + } + + /* unfortunately, atexit depends on implementation of malloc */ + /* atexit (term_ntproc); */ + signal (SIGABRT, term_ntproc); + + /* determine which drives are fixed, for GetCachedVolumeInformation */ + { + /* GetDriveType must have trailing backslash. */ + char drive[] = "A:\\"; + + /* Loop over all possible drive letters */ + while (*drive <= 'Z') + { + /* Record if this drive letter refers to a fixed drive. */ + fixed_drives[DRIVE_INDEX (*drive)] = + (GetDriveType (drive) == DRIVE_FIXED); + + (*drive)++; + } + + /* Reset the volume info cache. */ + volume_cache = NULL; + } + + /* Check to see if Emacs has been installed correctly. */ + check_windows_init_file (); +} + +/* + globals_of_w32 is used to initialize those global variables that + must always be initialized on startup even when the global variable + initialized is non zero (see the function main in emacs.c). +*/ +void globals_of_w32 () +{ + g_b_init_is_windows_9x = 0; + g_b_init_open_process_token = 0; + g_b_init_get_token_information = 0; + g_b_init_lookup_account_sid = 0; + g_b_init_get_sid_identifier_authority = 0; } -#else /* not WINDOWSNT */ -#endif /* not WINDOWSNT */ -#endif /* PIGSFLY */ + +/* end of nt.c */ + +/* arch-tag: 90442dd3-37be-482b-b272-ac752e3049f1 + (do not change this comment) */