18c2aff776a775d34a4c9893a4c72e0434d68e36artem/***************************************************************************
18c2aff776a775d34a4c9893a4c72e0434d68e36artem * CVSID: $Id: hal-storage-mount.c,v 1.7 2006/06/21 00:44:03 david Exp $
18c2aff776a775d34a4c9893a4c72e0434d68e36artem *
18c2aff776a775d34a4c9893a4c72e0434d68e36artem * hal-storage-cleanup-mountpoint.c : Cleanup mount point when hald detects
18c2aff776a775d34a4c9893a4c72e0434d68e36artem * that an unmount not done through Unmount()
18c2aff776a775d34a4c9893a4c72e0434d68e36artem *
18c2aff776a775d34a4c9893a4c72e0434d68e36artem * Copyright (C) 2006 David Zeuthen, <david@fubar.dk>
18c2aff776a775d34a4c9893a4c72e0434d68e36artem *
18c2aff776a775d34a4c9893a4c72e0434d68e36artem * This program is free software; you can redistribute it and/or modify
18c2aff776a775d34a4c9893a4c72e0434d68e36artem * it under the terms of the GNU General Public License as published by
18c2aff776a775d34a4c9893a4c72e0434d68e36artem * the Free Software Foundation; either version 2 of the License, or
18c2aff776a775d34a4c9893a4c72e0434d68e36artem * (at your option) any later version.
18c2aff776a775d34a4c9893a4c72e0434d68e36artem *
18c2aff776a775d34a4c9893a4c72e0434d68e36artem * This program is distributed in the hope that it will be useful,
18c2aff776a775d34a4c9893a4c72e0434d68e36artem * but WITHOUT ANY WARRANTY; without even the implied warranty of
18c2aff776a775d34a4c9893a4c72e0434d68e36artem * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18c2aff776a775d34a4c9893a4c72e0434d68e36artem * GNU General Public License for more details.
18c2aff776a775d34a4c9893a4c72e0434d68e36artem *
18c2aff776a775d34a4c9893a4c72e0434d68e36artem * You should have received a copy of the GNU General Public License
18c2aff776a775d34a4c9893a4c72e0434d68e36artem * along with this program; if not, write to the Free Software
18c2aff776a775d34a4c9893a4c72e0434d68e36artem * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18c2aff776a775d34a4c9893a4c72e0434d68e36artem *
18c2aff776a775d34a4c9893a4c72e0434d68e36artem **************************************************************************/
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem#ifdef HAVE_CONFIG_H
18c2aff776a775d34a4c9893a4c72e0434d68e36artem# include <config.h>
18c2aff776a775d34a4c9893a4c72e0434d68e36artem#endif
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem#include <unistd.h>
18c2aff776a775d34a4c9893a4c72e0434d68e36artem#include <stdio.h>
18c2aff776a775d34a4c9893a4c72e0434d68e36artem#include <stdlib.h>
18c2aff776a775d34a4c9893a4c72e0434d68e36artem#include <string.h>
18c2aff776a775d34a4c9893a4c72e0434d68e36artem#include <glib.h>
18c2aff776a775d34a4c9893a4c72e0434d68e36artem#include <glib/gstdio.h>
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem#include "hal-storage-shared.h"
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem/*#define DEBUG*/
18c2aff776a775d34a4c9893a4c72e0434d68e36artem#define DEBUG
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artemstatic void
18c2aff776a775d34a4c9893a4c72e0434d68e36artemusage (void)
18c2aff776a775d34a4c9893a4c72e0434d68e36artem{
18c2aff776a775d34a4c9893a4c72e0434d68e36artem fprintf (stderr, "This program should only be started by hald.\n");
18c2aff776a775d34a4c9893a4c72e0434d68e36artem exit (1);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem}
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artemstatic void
18c2aff776a775d34a4c9893a4c72e0434d68e36artemdo_cleanup (const char *mount_point)
18c2aff776a775d34a4c9893a4c72e0434d68e36artem{
18c2aff776a775d34a4c9893a4c72e0434d68e36artem int i, j;
18c2aff776a775d34a4c9893a4c72e0434d68e36artem FILE *hal_mtab_orig;
18c2aff776a775d34a4c9893a4c72e0434d68e36artem int hal_mtab_orig_len;
18c2aff776a775d34a4c9893a4c72e0434d68e36artem int num_read;
18c2aff776a775d34a4c9893a4c72e0434d68e36artem char *hal_mtab_buf;
18c2aff776a775d34a4c9893a4c72e0434d68e36artem char **lines;
18c2aff776a775d34a4c9893a4c72e0434d68e36artem FILE *hal_mtab_new;
18c2aff776a775d34a4c9893a4c72e0434d68e36artem gboolean found;
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem hal_mtab_orig = fopen ("/media/.hal-mtab", "r");
18c2aff776a775d34a4c9893a4c72e0434d68e36artem if (hal_mtab_orig == NULL) {
18c2aff776a775d34a4c9893a4c72e0434d68e36artem unknown_error ("Cannot open /media/.hal-mtab");
18c2aff776a775d34a4c9893a4c72e0434d68e36artem }
18c2aff776a775d34a4c9893a4c72e0434d68e36artem if (fseek (hal_mtab_orig, 0L, SEEK_END) != 0) {
18c2aff776a775d34a4c9893a4c72e0434d68e36artem unknown_error ("Cannot seek to end of /media/.hal-mtab");
18c2aff776a775d34a4c9893a4c72e0434d68e36artem }
18c2aff776a775d34a4c9893a4c72e0434d68e36artem hal_mtab_orig_len = ftell (hal_mtab_orig);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem if (hal_mtab_orig_len < 0) {
18c2aff776a775d34a4c9893a4c72e0434d68e36artem unknown_error ("Cannot determine size of /media/.hal-mtab");
18c2aff776a775d34a4c9893a4c72e0434d68e36artem }
18c2aff776a775d34a4c9893a4c72e0434d68e36artem rewind (hal_mtab_orig);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem hal_mtab_buf = g_new0 (char, hal_mtab_orig_len + 1);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem num_read = fread (hal_mtab_buf, 1, hal_mtab_orig_len, hal_mtab_orig);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem if (num_read != hal_mtab_orig_len) {
18c2aff776a775d34a4c9893a4c72e0434d68e36artem unknown_error ("Cannot read from /media/.hal-mtab");
18c2aff776a775d34a4c9893a4c72e0434d68e36artem }
18c2aff776a775d34a4c9893a4c72e0434d68e36artem fclose (hal_mtab_orig);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem#ifdef DEBUG
18c2aff776a775d34a4c9893a4c72e0434d68e36artem printf ("hal_mtab = '%s'\n", hal_mtab_buf);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem#endif
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem lines = g_strsplit (hal_mtab_buf, "\n", 0);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem g_free (hal_mtab_buf);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem /* find the entry we're going to unmount */
18c2aff776a775d34a4c9893a4c72e0434d68e36artem found = FALSE;
18c2aff776a775d34a4c9893a4c72e0434d68e36artem for (i = 0; lines[i] != NULL && !found; i++) {
18c2aff776a775d34a4c9893a4c72e0434d68e36artem char **line_elements;
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem#ifdef DEBUG
18c2aff776a775d34a4c9893a4c72e0434d68e36artem printf (" line = '%s'\n", lines[i]);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem#endif
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem if ((lines[i])[0] == '#')
18c2aff776a775d34a4c9893a4c72e0434d68e36artem continue;
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem line_elements = g_strsplit (lines[i], "\t", 6);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem if (g_strv_length (line_elements) == 6) {
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem#ifdef DEBUG
18c2aff776a775d34a4c9893a4c72e0434d68e36artem printf (" devfile = '%s'\n", line_elements[0]);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem printf (" uid = '%s'\n", line_elements[1]);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem printf (" session id = '%s'\n", line_elements[2]);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem printf (" fs = '%s'\n", line_elements[3]);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem printf (" options = '%s'\n", line_elements[4]);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem printf (" mount_point = '%s'\n", line_elements[5]);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem#endif
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem if (strcmp (line_elements[5], mount_point) == 0) {
18c2aff776a775d34a4c9893a4c72e0434d68e36artem char *line_to_free;
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem found = TRUE;
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem line_to_free = lines[i];
18c2aff776a775d34a4c9893a4c72e0434d68e36artem for (j = i; lines[j] != NULL; j++) {
18c2aff776a775d34a4c9893a4c72e0434d68e36artem lines[j] = lines[j+1];
18c2aff776a775d34a4c9893a4c72e0434d68e36artem }
18c2aff776a775d34a4c9893a4c72e0434d68e36artem lines[j] = NULL;
18c2aff776a775d34a4c9893a4c72e0434d68e36artem g_free (line_to_free);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem }
18c2aff776a775d34a4c9893a4c72e0434d68e36artem }
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem g_strfreev (line_elements);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem }
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem if (!found) {
18c2aff776a775d34a4c9893a4c72e0434d68e36artem unknown_error ("mount point is not /media/.hal-mtab");
18c2aff776a775d34a4c9893a4c72e0434d68e36artem }
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem#ifdef DEBUG
18c2aff776a775d34a4c9893a4c72e0434d68e36artem printf ("Found entry for mount point '%s' in /media/.hal-mtab", mount_point);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem#endif
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem /* create new .hal-mtab~ file without the entry we're going to unmount */
18c2aff776a775d34a4c9893a4c72e0434d68e36artem hal_mtab_new = fopen ("/media/.hal-mtab~", "w");
18c2aff776a775d34a4c9893a4c72e0434d68e36artem if (hal_mtab_new == NULL) {
18c2aff776a775d34a4c9893a4c72e0434d68e36artem unknown_error ("Cannot create /media/.hal-mtab~");
18c2aff776a775d34a4c9893a4c72e0434d68e36artem }
18c2aff776a775d34a4c9893a4c72e0434d68e36artem for (i = 0; lines[i] != NULL; i++) {
18c2aff776a775d34a4c9893a4c72e0434d68e36artem if (i > 0) {
18c2aff776a775d34a4c9893a4c72e0434d68e36artem char anewl[2] = "\n\0";
18c2aff776a775d34a4c9893a4c72e0434d68e36artem if (fwrite (anewl, 1, 1, hal_mtab_new) != 1) {
18c2aff776a775d34a4c9893a4c72e0434d68e36artem unknown_error ("Cannot write to /media/.hal-mtab~");
18c2aff776a775d34a4c9893a4c72e0434d68e36artem }
18c2aff776a775d34a4c9893a4c72e0434d68e36artem }
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem if (fwrite (lines[i], 1, strlen (lines[i]), hal_mtab_new) != strlen (lines[i])) {
18c2aff776a775d34a4c9893a4c72e0434d68e36artem unknown_error ("Cannot write to /media/.hal-mtab~");
18c2aff776a775d34a4c9893a4c72e0434d68e36artem }
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem }
18c2aff776a775d34a4c9893a4c72e0434d68e36artem fclose (hal_mtab_new);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem g_strfreev (lines);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem /* remove directory */
18c2aff776a775d34a4c9893a4c72e0434d68e36artem if (g_rmdir (mount_point) != 0) {
18c2aff776a775d34a4c9893a4c72e0434d68e36artem unlink ("/media/.hal-mtab~");
18c2aff776a775d34a4c9893a4c72e0434d68e36artem unknown_error ("Cannot remove directory");
18c2aff776a775d34a4c9893a4c72e0434d68e36artem }
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem /* set new .hal-mtab file */
18c2aff776a775d34a4c9893a4c72e0434d68e36artem if (rename ("/media/.hal-mtab~", "/media/.hal-mtab") != 0) {
18c2aff776a775d34a4c9893a4c72e0434d68e36artem unlink ("/media/.hal-mtab~");
18c2aff776a775d34a4c9893a4c72e0434d68e36artem unknown_error ("Cannot rename /media/.hal-mtab~ to /media/.hal-mtab");
18c2aff776a775d34a4c9893a4c72e0434d68e36artem }
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem}
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artemint
18c2aff776a775d34a4c9893a4c72e0434d68e36artemmain (int argc, char *argv[])
18c2aff776a775d34a4c9893a4c72e0434d68e36artem{
18c2aff776a775d34a4c9893a4c72e0434d68e36artem char *mount_point;
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem if (!lock_hal_mtab ()) {
18c2aff776a775d34a4c9893a4c72e0434d68e36artem unknown_error ("Cannot obtain lock on /media/.hal-mtab");
18c2aff776a775d34a4c9893a4c72e0434d68e36artem }
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem mount_point = getenv ("HALD_CLEANUP");
18c2aff776a775d34a4c9893a4c72e0434d68e36artem if (mount_point == NULL)
18c2aff776a775d34a4c9893a4c72e0434d68e36artem usage ();
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem#ifdef DEBUG
18c2aff776a775d34a4c9893a4c72e0434d68e36artem printf ("in hal-storage-cleanup-mountpoint for mount point '%s'\n", mount_point);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem#endif
18c2aff776a775d34a4c9893a4c72e0434d68e36artem do_cleanup (mount_point);
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem
18c2aff776a775d34a4c9893a4c72e0434d68e36artem unlock_hal_mtab ();
18c2aff776a775d34a4c9893a4c72e0434d68e36artem return 0;
18c2aff776a775d34a4c9893a4c72e0434d68e36artem}