diff options
Diffstat (limited to 'utils/gdmopen.c')
| -rw-r--r-- | utils/gdmopen.c | 254 |
1 files changed, 0 insertions, 254 deletions
diff --git a/utils/gdmopen.c b/utils/gdmopen.c deleted file mode 100644 index b49f51af..00000000 --- a/utils/gdmopen.c +++ /dev/null @@ -1,254 +0,0 @@ -/* - * gdmopen.c by the Queen of England, based upon original open. - * Simplified for the purposes of gdm. All useless (to me) - * functionality stripped. Also returns what the command returns. - * Return of 66 means error with open. - * - * Original header: - * - * open.c open a vt to run a new command (or shell). - * - * Copyright (c) 1994 by Jon Tombs <jon@gtex02.us.es> - * - * This program 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 of the License, or (at your option) any later version. - */ - -#include "config.h" -#include <stdio.h> -#include <signal.h> -#include <unistd.h> -#include <errno.h> -#include <stdlib.h> -#include <string.h> -#include <fcntl.h> -#include <dirent.h> -#include <pwd.h> -#include <sys/ioctl.h> -#include <sys/stat.h> -#include <sys/vt.h> -#include <sys/types.h> -#include <sys/wait.h> - -#define IGNORE_EINTR(expr) \ - do { \ - errno = 0; \ - expr; \ - } while (errno == EINTR); - -#ifndef FALSE -#define FALSE 0 -#define TRUE !FALSE -#endif - - -/* - * Where your VTs are hidden - */ -#ifdef __linux__ -#define VTNAME "/dev/tty%d" -#endif - -#ifdef ESIX_5_3_2_D -#define VTBASE "/dev/vt%02d" -#endif - -const char *GDMOPENversion = "gdmopen " VERSION " simplified (was: open: 1.4 (c) Jon Tombs 1994)"; - -#ifndef VTNAME -#error vt device name must be defined in open.c -#endif - -static pid_t child_pid = -1; -struct vt_stat vt; -static int vtno; -static int fd = 0; -static int do_switchback = FALSE; - -static void -sighandler (int sig) -{ - if (child_pid > 1) { - if (kill (child_pid, sig) == 0) - waitpid (child_pid, NULL, 0); - } - - if (do_switchback) { - /* Switch back... */ - (void) ioctl(fd, VT_ACTIVATE, vt.v_active); - /* wait to be really sure we have switched */ - (void) ioctl(fd, VT_WAITACTIVE, vt.v_active); - } - - /* Kill myself with this signal */ - signal (sig, SIG_DFL); - raise (sig); -} - -int -main (int argc, char *argv[]) -{ - char vtname[256]; - int status; - int cmd_start = 1; - char *command = NULL; - - if (getuid () != geteuid () || - getuid () != 0) { - fprintf (stderr, "gdmopen: Only root wants to run me\n"); - return 66; - } - - signal (SIGTERM, sighandler); - signal (SIGINT, sighandler); - signal (SIGHUP, sighandler); - - if (argc <= 1) { - fprintf (stderr, "gdmopen: must supply a command!\n"); - return 66; - } - - command = argv[1]; - - if (strcmp (argv[1], "-l") == 0) { - char *p; - if (argc <= 2) { - fprintf (stderr, "gdmopen: must supply a command!\n"); - return 66; - } - /* prepend '-' and start the command at - * argument 2 */ - cmd_start = 2; - command = argv[2]; - argv[2] = malloc (strlen (command) + 2); - if (argv[2] == NULL) { - fprintf (stderr, "gdmopen: cannot allocate memory!\n"); - return 66; - } - p = strrchr (command, '/'); - if (p != NULL) { - /* make it "-basename" */ - strcpy (argv[2]+1, p+1); - } else { - strcpy (argv[2]+1, command); - } - *(argv[2]) = '-'; - } - - fd = open ("/dev/console", O_WRONLY, 0); - if (fd < 0) { - perror ("gdmopen: Failed to open /dev/console"); - return 66; - } - - errno = 0; - if ((ioctl(fd, VT_OPENQRY, &vtno) < 0) || (vtno == -1)) { - perror ("gdmopen: Cannot find a free VT"); - IGNORE_EINTR (close (fd)); - return 66; - } - - if (ioctl(fd, VT_GETSTATE, &vt) < 0) { - perror ("gdmopen: can't get VTstate"); - IGNORE_EINTR (close(fd)); - return 66; - } - - snprintf (vtname, sizeof (vtname), VTNAME, vtno); - - chown (vtname, 0, -1); - - child_pid = fork(); - if (child_pid == 0) { - char VT_NUMBER[256]; - - if (getenv ("UNSAFE_TO_TRANSLATE") != NULL && - strcmp (getenv ("UNSAFE_TO_TRANSLATE"), "yes") == 0) { - putenv ("LANG=C"); - - /* portable way to truly unset with putenv? */ - putenv ("LC_ALL="); - putenv ("LC_MESSAGES="); - putenv ("LC_ALL"); - putenv ("LC_MESSAGES"); - } - -#ifdef __linux__ - putenv ("TERM=linux"); -#endif - - snprintf (VT_NUMBER, sizeof (VT_NUMBER), "VT_NUMBER=%d", vtno); - putenv (VT_NUMBER); - - signal (SIGTERM, SIG_DFL); - signal (SIGINT, SIG_DFL); - signal (SIGHUP, SIG_DFL); - - /* leave current vt */ - if ( -#ifdef ESIX_5_3_2_D - setpgrp() < 0 -#else - setsid() < 0 -#endif - ) { - fprintf(stderr, "open: Unable to set new session (%s)\n", - strerror(errno)); - } - IGNORE_EINTR (close (0)); - IGNORE_EINTR (close (1)); - IGNORE_EINTR (close (2)); - IGNORE_EINTR (close (fd)); - - /* and grab new one */ - fd = open (vtname, O_RDWR); - if (fd < 0) { /* Shouldn't happen */ - _exit (66); /* silently die */ - } - dup(fd); - dup(fd); - - /* - * Can't tell anyone if any of these fail, so throw away - * the return values - */ - (void) ioctl(fd, VT_ACTIVATE, vtno); - /* wait to be really sure we have switched */ - (void) ioctl(fd, VT_WAITACTIVE, vtno); - -#ifdef __linux__ - /* Turn on fonts */ - IGNORE_EINTR (write (0, "\033(K", 3)); -#endif /* __linux__ */ - - execvp (command, &argv[cmd_start]); - - _exit (66); /* failed */ - } - - if (child_pid < 0) { - perror ("gdmopen: fork() error"); - return 66; - } - - do_switchback = TRUE; - - IGNORE_EINTR (waitpid (child_pid, &status, 0)); - child_pid = -1; - - do_switchback = FALSE; - - /* Switch back... */ - (void) ioctl(fd, VT_ACTIVATE, vt.v_active); - /* wait to be really sure we have switched */ - (void) ioctl(fd, VT_WAITACTIVE, vt.v_active); - - IGNORE_EINTR (close (fd)); - - if (WIFEXITED (status)) - return WEXITSTATUS (status); - else - return 66; -} |