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https://git.savannah.gnu.org/git/emacs.git
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361 lines
7.7 KiB
C
361 lines
7.7 KiB
C
/* Utility and Unix shadow routines for GNU Emacs support programs on NT.
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Copyright (C) 1994, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
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2008 Free Software Foundation, Inc.
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This file is part of GNU Emacs.
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GNU Emacs is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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GNU Emacs is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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Geoff Voelker (voelker@cs.washington.edu) 10-8-94
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*/
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#include <windows.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <time.h>
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#include <direct.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include "ntlib.h"
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#define MAXPATHLEN _MAX_PATH
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/* Emulate sleep...we could have done this with a define, but that
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would necessitate including windows.h in the files that used it.
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This is much easier. */
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void
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sleep(unsigned long seconds)
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{
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Sleep (seconds * 1000);
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}
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/* Get the current working directory. */
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char *
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getwd (char *dir)
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{
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if (GetCurrentDirectory (MAXPATHLEN, dir) > 0)
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return dir;
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return NULL;
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}
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static HANDLE getppid_parent;
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static int getppid_ppid;
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int
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getppid(void)
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{
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char *ppid;
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DWORD result;
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ppid = getenv ("EM_PARENT_PROCESS_ID");
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if (!ppid)
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{
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printf("no pid.\n");
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return 0;
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}
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else
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{
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getppid_ppid = atoi (ppid);
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}
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if (!getppid_parent)
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{
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getppid_parent = OpenProcess (SYNCHRONIZE, FALSE, atoi(ppid));
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if (!getppid_parent)
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{
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printf ("Failed to open handle to parent process: %d\n",
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GetLastError());
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exit (1);
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}
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}
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result = WaitForSingleObject (getppid_parent, 0);
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switch (result)
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{
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case WAIT_TIMEOUT:
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/* The parent is still alive. */
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return getppid_ppid;
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case WAIT_OBJECT_0:
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/* The parent is gone. Return the pid of Unix init (1). */
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return 1;
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case WAIT_FAILED:
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default:
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printf ("Checking parent status failed: %d\n", GetLastError());
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exit (1);
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}
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}
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char *
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getlogin ()
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{
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static char user_name[256];
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DWORD length = sizeof (user_name);
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if (GetUserName (user_name, &length))
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return user_name;
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return NULL;
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}
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char *
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cuserid (char * s)
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{
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char * name = getlogin ();
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if (s)
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return strcpy (s, name ? name : "");
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return name;
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}
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int
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getuid ()
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{
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return 0;
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}
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int
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setuid (int uid)
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{
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return 0;
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}
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struct passwd *
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getpwuid (int uid)
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{
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return NULL;
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}
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char *
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getpass (const char * prompt)
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{
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static char input[256];
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HANDLE in;
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HANDLE err;
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DWORD count;
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in = GetStdHandle (STD_INPUT_HANDLE);
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err = GetStdHandle (STD_ERROR_HANDLE);
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if (in == INVALID_HANDLE_VALUE || err == INVALID_HANDLE_VALUE)
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return NULL;
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if (WriteFile (err, prompt, strlen (prompt), &count, NULL))
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{
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int istty = (GetFileType (in) == FILE_TYPE_CHAR);
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DWORD old_flags;
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int rc;
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if (istty)
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{
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if (GetConsoleMode (in, &old_flags))
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SetConsoleMode (in, ENABLE_LINE_INPUT | ENABLE_PROCESSED_INPUT);
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else
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istty = 0;
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}
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rc = ReadFile (in, input, sizeof (input), &count, NULL);
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if (count >= 2 && input[count - 2] == '\r')
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input[count - 2] = '\0';
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else
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{
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char buf[256];
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while (ReadFile (in, buf, sizeof (buf), &count, NULL) > 0)
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if (count >= 2 && buf[count - 2] == '\r')
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break;
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}
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WriteFile (err, "\r\n", 2, &count, NULL);
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if (istty)
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SetConsoleMode (in, old_flags);
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if (rc)
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return input;
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}
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return NULL;
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}
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int
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fchown (int fd, int uid, int gid)
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{
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return 0;
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}
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/* Place a wrapper around the MSVC version of ctime. It returns NULL
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on network directories, so we handle that case here.
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(Ulrich Leodolter, 1/11/95). */
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char *
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sys_ctime (const time_t *t)
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{
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char *str = (char *) ctime (t);
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return (str ? str : "Sun Jan 01 00:00:00 1970");
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}
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FILE *
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sys_fopen(const char * path, const char * mode)
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{
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return fopen (path, mode);
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}
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int
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sys_chdir (const char * path)
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{
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return _chdir (path);
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}
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static FILETIME utc_base_ft;
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static long double utc_base;
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static int init = 0;
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static time_t
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convert_time (FILETIME ft)
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{
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long double ret;
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if (CompareFileTime (&ft, &utc_base_ft) < 0)
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return 0;
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ret = (long double) ft.dwHighDateTime
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* 4096.0L * 1024.0L * 1024.0L + ft.dwLowDateTime;
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ret -= utc_base;
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return (time_t) (ret * 1e-7L);
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}
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static int
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is_exec (const char * name)
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{
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char * p = strrchr (name, '.');
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return
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(p != NULL
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&& (stricmp (p, ".exe") == 0 ||
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stricmp (p, ".com") == 0 ||
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stricmp (p, ".bat") == 0 ||
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stricmp (p, ".cmd") == 0));
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}
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#define IS_DIRECTORY_SEP(x) ((x) == '/' || (x) == '\\')
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/* We need this because nt/inc/sys/stat.h defines struct stat that is
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incompatible with the MS run-time libraries. */
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int
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stat (const char * path, struct stat * buf)
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{
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WIN32_FIND_DATA wfd;
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HANDLE fh;
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int permission;
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int len;
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int rootdir = FALSE;
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char *name = alloca (FILENAME_MAX);
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if (!init)
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{
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/* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */
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SYSTEMTIME st;
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st.wYear = 1970;
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st.wMonth = 1;
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st.wDay = 1;
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st.wHour = 0;
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st.wMinute = 0;
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st.wSecond = 0;
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st.wMilliseconds = 0;
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SystemTimeToFileTime (&st, &utc_base_ft);
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utc_base = (long double) utc_base_ft.dwHighDateTime
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* 4096.0L * 1024.0L * 1024.0L + utc_base_ft.dwLowDateTime;
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init = 1;
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}
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if (path == NULL || buf == NULL || *path == '\0')
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{
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errno = EFAULT;
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return -1;
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}
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if (_mbspbrk (path, "*?|<>\""))
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{
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errno = ENOENT;
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return -1;
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}
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strcpy (name, path);
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/* Remove trailing directory separator, unless name is the root
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directory of a drive in which case ensure there is a trailing
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separator. */
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len = strlen (name);
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rootdir = IS_DIRECTORY_SEP (name[0])
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|| (len == 3 && name[1] == ':' && IS_DIRECTORY_SEP (name[2]));
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if (rootdir)
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{
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if (GetDriveType (name) < 2)
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{
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errno = ENOENT;
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return -1;
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}
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memset (&wfd, 0, sizeof (wfd));
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wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY;
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wfd.ftCreationTime = utc_base_ft;
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wfd.ftLastAccessTime = utc_base_ft;
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wfd.ftLastWriteTime = utc_base_ft;
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strcpy (wfd.cFileName, name);
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}
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else
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{
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if (IS_DIRECTORY_SEP (name[len-1]))
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name[len - 1] = 0;
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fh = FindFirstFile (name, &wfd);
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if (fh == INVALID_HANDLE_VALUE)
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{
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errno = ENOENT;
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return -1;
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}
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FindClose (fh);
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}
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buf->st_mode = (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ?
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S_IFDIR : S_IFREG;
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buf->st_nlink = 1;
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buf->st_ino = 0;
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if (name[0] && name[1] == ':')
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buf->st_dev = tolower (name[0]) - 'a' + 1;
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else
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buf->st_dev = _getdrive ();
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buf->st_rdev = buf->st_dev;
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buf->st_size = wfd.nFileSizeLow;
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/* Convert timestamps to Unix format. */
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buf->st_mtime = convert_time (wfd.ftLastWriteTime);
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buf->st_atime = convert_time (wfd.ftLastAccessTime);
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if (buf->st_atime == 0) buf->st_atime = buf->st_mtime;
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buf->st_ctime = convert_time (wfd.ftCreationTime);
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if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime;
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/* determine rwx permissions */
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if (wfd.dwFileAttributes & FILE_ATTRIBUTE_READONLY)
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permission = S_IREAD;
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else
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permission = S_IREAD | S_IWRITE;
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if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
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permission |= S_IEXEC;
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else if (is_exec (name))
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permission |= S_IEXEC;
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buf->st_mode |= permission | (permission >> 3) | (permission >> 6);
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return 0;
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}
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/* arch-tag: 7b63fb83-70ee-4124-8822-54e53e5d0773
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(do not change this comment) */
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