diff options
Diffstat (limited to 'daemon/getvt.c')
| -rw-r--r-- | daemon/getvt.c | 310 |
1 files changed, 0 insertions, 310 deletions
diff --git a/daemon/getvt.c b/daemon/getvt.c deleted file mode 100644 index c8eddfe2..00000000 --- a/daemon/getvt.c +++ /dev/null @@ -1,310 +0,0 @@ -/* GDM - The GNOME Display Manager - * Copyright (C) 1998, 1999, 2000 Martin K. Petersen <mkp@mkp.net> - * - * 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. - * - * This program 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 this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include "config.h" - -#include <stdio.h> -#include <unistd.h> -#include <stdlib.h> -#include <string.h> -#include <fcntl.h> -#include <dirent.h> -#include <errno.h> -#include <sys/ioctl.h> -#include <sys/stat.h> -#include <sys/types.h> - -#include "gdm.h" -#include "misc.h" -#include "getvt.h" -#include "gdmconfig.h" - -/* Virtual terminals only supported on Linux, FreeBSD, or DragonFly */ - -#if defined (__linux__) || defined (__FreeBSD__) || defined (__DragonFly__) - -#if defined (__linux__) -#include <sys/vt.h> -#elif defined (__FreeBSD__) || defined (__DragonFly__) -#include <sys/consio.h> - -static const char* -__itovty (int val) -{ - static char str[8]; - char* next = str + sizeof (str) - 1; - - *next = '\0'; - do { - *--next = "0123456789abcdefghigklmnopqrstuv"[val % 32]; - } while (val /= 32); - - return next; -} -#endif - -static int -open_vt (int vtno) -{ - char *vtname; - int fd; - -#if defined (__linux__) - vtname = g_strdup_printf ("/dev/tty%d", vtno); -#elif defined (__FreeBSD__) || defined (__DragonFly__) - vtname = g_strdup_printf ("/dev/ttyv%s", __itovty (vtno - 1)); -#endif - do { - errno = 0; - fd = open (vtname, O_RDWR -#ifdef O_NOCTTY - |O_NOCTTY -#endif - , 0); - } while G_UNLIKELY (errno == EINTR); - g_free (vtname); - return fd; -} - -#if defined (__linux__) - -static int -get_free_vt_linux (int *vtfd) -{ - int fd, fdv; - int vtno; - unsigned short vtmask; - struct vt_stat vtstat; - - *vtfd = -1; - - do { - errno = 0; - fd = open ("/dev/console", O_WRONLY -#ifdef O_NOCTTY - |O_NOCTTY -#endif - , 0); - } while G_UNLIKELY (errno == EINTR); - if (fd < 0) - return -1; - - if (ioctl (fd, VT_GETSTATE, &vtstat) < 0) { - VE_IGNORE_EINTR (close (fd)); - return -1; - } - - for (vtno = gdm_get_value_int (GDM_KEY_FIRST_VT), vtmask = 1 << vtno; - vtstat.v_state & vtmask; vtno++, vtmask <<= 1); - if (!vtmask) { - VE_IGNORE_EINTR (close (fd)); - return -1; - } - - fdv = open_vt (vtno); - if (fdv < 0) { - VE_IGNORE_EINTR (close (fd)); - return -1; - } - *vtfd = fdv; - return vtno; -} - -#elif defined (__FreeBSD__) || defined (__DragonFly__) - -static int -get_free_vt_freebsd_dragonfly (int *vtfd) -{ - int fd, fdv; - int vtno; - GList *to_close_vts = NULL, *li; - - *vtfd = -1; - - do { - errno = 0; - fd = open ("/dev/console", O_WRONLY -#ifdef O_NOCTTY - |O_NOCTTY -#endif - , 0); - } while G_UNLIKELY (errno == EINTR); - if (fd < 0) - return -1; - - if ((ioctl (fd, VT_OPENQRY, &vtno) < 0) || (vtno == -1)) { - VE_IGNORE_EINTR (close (fd)); - return -1; - } - - fdv = open_vt (vtno); - if (fdv < 0) { - VE_IGNORE_EINTR (close (fd)); - return -1; - } - - while (vtno < gdm_get_value_int (GDM_KEY_FIRST_VT)) { - int oldvt = vtno; - to_close_vts = g_list_prepend (to_close_vts, - GINT_TO_POINTER (fdv)); - - if (ioctl (fd, VT_OPENQRY, &vtno) == -1) { - vtno = -1; - goto cleanup; - } - - if (oldvt == vtno) { - vtno = -1; - goto cleanup; - } - - fdv = open_vt (vtno); - if (fdv < 0) { - vtno = -1; - goto cleanup; - } - } - - *vtfd = fdv; - -cleanup: - for (li = to_close_vts; li != NULL; li = li->next) { - VE_IGNORE_EINTR (close (GPOINTER_TO_INT (li->data))); - } - return vtno; -} - -#endif - -char * -gdm_get_empty_vt_argument (int *fd, int *vt) -{ - if ( ! gdm_get_value_bool (GDM_KEY_VT_ALLOCATION)) { - *fd = -1; - return NULL; - } - -#if defined (__linux__) - *vt = get_free_vt_linux (fd); -#elif defined (__FreeBSD__) || defined (__DragonFly__) - *vt = get_free_vt_freebsd_dragonfly (fd); -#endif - - if (*vt < 0) - return NULL; - else - return g_strdup_printf ("vt%d", *vt); -} - -/* change to an existing vt */ -void -gdm_change_vt (int vt) -{ - int fd; - if (vt < 0) - return; - - do { - errno = 0; - fd = open ("/dev/console", O_WRONLY -#ifdef O_NOCTTY - |O_NOCTTY -#endif - , 0); - } while G_UNLIKELY (errno == EINTR); - if (fd < 0) - return; - - ioctl (fd, VT_ACTIVATE, vt); - ioctl (fd, VT_WAITACTIVE, vt); - - VE_IGNORE_EINTR (close (fd)); -} - -int -gdm_get_cur_vt (void) -{ -#if defined (__linux__) - struct vt_stat s; -#elif defined (__FreeBSD__) || defined (__DragonFly__) - int vtno; -#endif - int fd; - - do { - errno = 0; - fd = open ("/dev/console", O_WRONLY -#ifdef O_NOCTTY - |O_NOCTTY -#endif - , 0); - } while G_UNLIKELY (errno == EINTR); - if (fd < 0) - return -1; -#if defined (__linux__) - ioctl (fd, VT_GETSTATE, &s); - - VE_IGNORE_EINTR (close (fd)); - - /* debug */ - /* - printf ("current_Active %d\n", (int)s.v_active); - */ - - return s.v_active; -#elif defined (__FreeBSD__) || defined (__DragonFly__) - if (ioctl (fd, VT_GETACTIVE, &vtno) == -1) { - VE_IGNORE_EINTR (close (fd)); - return -1; - } - - VE_IGNORE_EINTR (close (fd)); - - /* debug */ - /* - printf ("current_Active %d\n", vtno); - */ - - return vtno; -#endif -} - -#else /* here this is just a stub, we don't know how to do this outside - of linux really */ - -char * -gdm_get_empty_vt_argument (int *fd, int *vt) -{ - *fd = -1; - *vt = -1; - return NULL; -} - -void -gdm_change_vt (int vt) -{ - return; -} - -int -gdm_get_cur_vt (void) -{ - return -1; -} - -#endif |