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/***************************************************************************
* CVSID: $Id$
*
* hal-storage-unmount.c : Unmount wrapper
*
* Copyright (C) 2006 David Zeuthen, <david@fubar.dk>
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
**************************************************************************/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <glib.h>
#include <glib/gstdio.h>
#ifdef __FreeBSD__
#include <fstab.h>
#include <sys/param.h>
#include <sys/ucred.h>
#include <sys/mount.h>
#include <limits.h>
#include <pwd.h>
#elif sun
#include <fcntl.h>
#include <sys/mnttab.h>
#include <sys/vfstab.h>
#else
#include <mntent.h>
#endif
#include <sys/types.h>
#include <unistd.h>
#include <libhal.h>
#include <libhal-storage.h>
#include "hal-storage-shared.h"
static void
usage (void)
{
fprintf (stderr, "This program should only be started by hald.\n");
exit (1);
}
static void
invalid_unmount_option (const char *option, const char *uid)
{
fprintf (stderr, "org.freedesktop.Hal.Device.Volume.InvalidUnmountOption\n");
fprintf (stderr, "The option '%s' is not allowed for uid=%s\n", option, uid);
exit (1);
}
int
main (int argc, char *argv[])
{
char *udi;
char *device;
LibHalVolume *volume;
DBusError error;
LibHalContext *hal_ctx = NULL;
DBusConnection *system_bus = NULL;
char *invoked_by_uid;
char *invoked_by_syscon_name;
int i;
char unmount_options[1024];
char **given_options;
gboolean use_lazy;
gboolean use_force;
const char *end;
if (!lock_hal_mtab ()) {
unknown_error ("Cannot obtain lock on /media/.hal-mtab");
}
device = getenv ("HAL_PROP_BLOCK_DEVICE");
if (device == NULL)
usage ();
udi = getenv ("HAL_PROP_INFO_UDI");
if (udi == NULL)
usage ();
invoked_by_uid = getenv ("HAL_METHOD_INVOKED_BY_UID");
invoked_by_syscon_name = getenv ("HAL_METHOD_INVOKED_BY_SYSTEMBUS_CONNECTION_NAME");
dbus_error_init (&error);
if ((hal_ctx = libhal_ctx_init_direct (&error)) == NULL) {
printf ("Cannot connect to hald\n");
if (dbus_error_is_set (&error)) {
dbus_error_free (&error);
}
usage ();
}
dbus_error_init (&error);
system_bus = dbus_bus_get (DBUS_BUS_SYSTEM, &error);
if (system_bus == NULL) {
printf ("Cannot connect to the system bus\n");
if (dbus_error_is_set (&error)) {
dbus_error_free (&error);
}
usage ();
}
/* read from stdin */
if (strlen (fgets (unmount_options, sizeof (unmount_options), stdin)) > 0)
unmount_options [strlen (unmount_options) - 1] = '\0';
/* validate that input from stdin is UTF-8 */
if (!g_utf8_validate (unmount_options, -1, &end))
unknown_error ("Error validating unmount_options as UTF-8");
#ifdef DEBUG
printf ("unmount_options = '%s'\n", unmount_options);
#endif
/* delete any trailing whitespace options from splitting the string */
given_options = g_strsplit (unmount_options, "\t", 0);
for (i = g_strv_length (given_options) - 1; i >= 0; --i) {
if (strlen (given_options[i]) > 0)
break;
given_options[i] = NULL;
}
use_lazy = FALSE;
use_force = FALSE;
/* check unmount options */
for (i = 0; given_options[i] != NULL; i++) {
char *given = given_options[i];
if (strcmp (given, "lazy") == 0) {
use_lazy = TRUE;
} else if (strcmp (given, "force") == 0) {
use_force = TRUE;
} else {
invalid_unmount_option (given, invoked_by_uid);
}
}
g_strfreev (given_options);
volume = libhal_volume_from_udi (hal_ctx, udi);
if (volume == NULL) {
LibHalDrive *drive;
drive = libhal_drive_from_udi (hal_ctx, udi);
if (drive == NULL) {
usage ();
} else {
handle_unmount (hal_ctx,
udi, NULL, drive, device, invoked_by_uid,
invoked_by_syscon_name, use_lazy, use_force);
}
} else {
const char *drive_udi;
LibHalDrive *drive;
drive_udi = libhal_volume_get_storage_device_udi (volume);
if (drive_udi == NULL)
unknown_error ("Cannot get drive_udi from volume");
drive = libhal_drive_from_udi (hal_ctx, drive_udi);
if (drive == NULL)
unknown_error ("Cannot get drive from hal");
handle_unmount (hal_ctx,
udi, volume, drive, device, invoked_by_uid,
invoked_by_syscon_name, use_lazy, use_force);
}
unlock_hal_mtab ();
return 0;
}
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