OpenSolaris_b135/cmd/hal/tools/hal-storage-eject.c
/***************************************************************************
*
* hal-storage-eject.c : Eject method handler
*
* 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>
#include <sys/types.h>
#include <unistd.h>
#include <libhal.h>
#include <libhal-storage.h>
#ifdef HAVE_POLKIT
#include <libpolkit.h>
#endif
#include "hal-storage-shared.h"
/* possible values: "Volume", "Storage" */
static char *devtype = "Volume";
static void
usage (void)
{
fprintf (stderr, "This program should only be started by hald.\n");
exit (1);
}
void static
unknown_eject_error (const char *detail)
{
fprintf (stderr, "org.freedesktop.Hal.Device.%s.UnknownFailure\n", devtype);
fprintf (stderr, "%s\n", detail);
exit (1);
}
static void
invalid_eject_option (const char *option, const char *uid)
{
fprintf (stderr, "org.freedesktop.Hal.Device.Volume.InvalidEjectOption\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;
const char *drive_udi;
LibHalDrive *drive;
LibHalVolume *volume;
DBusError error;
LibHalContext *hal_ctx = NULL;
DBusConnection *system_bus = NULL;
#ifdef HAVE_POLKIT
LibPolKitContext *pol_ctx = NULL;
#endif
char *invoked_by_uid;
char *invoked_by_syscon_name;
char **volume_udis;
int num_volumes;
int i;
char eject_options[1024];
char **given_options;
const char *end;
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");
LIBHAL_FREE_DBUS_ERROR (&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");
LIBHAL_FREE_DBUS_ERROR (&error);
usage ();
}
#ifdef HAVE_POLKIT
pol_ctx = libpolkit_new_context (system_bus);
if (pol_ctx == NULL) {
printf ("Cannot get libpolkit context\n");
unknown_eject_error ("Cannot get libpolkit context");
}
#endif
/* read from stdin */
if (strlen (fgets (eject_options, sizeof (eject_options), stdin)) > 0)
eject_options [strlen (eject_options) - 1] = '\0';
/* validate that input from stdin is UTF-8 */
if (!g_utf8_validate (eject_options, -1, &end))
unknown_eject_error ("Error validating eject_options as UTF-8");
#ifdef DEBUG
printf ("eject_options = '%s'\n", eject_options);
#endif
/* delete any trailing whitespace options from splitting the string */
given_options = g_strsplit (eject_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;
}
/* check eject options */
for (i = 0; given_options[i] != NULL; i++) {
char *given = given_options[i];
/* none supported right now */
invalid_eject_option (given, invoked_by_uid);
}
g_strfreev (given_options);
/* should be either volume or storage */
if ((volume = libhal_volume_from_udi (hal_ctx, udi)) != NULL) {
drive_udi = libhal_volume_get_storage_device_udi (volume);
} else {
drive_udi = g_strdup (udi);
devtype = "Storage";
}
if (drive_udi == NULL) {
unknown_eject_error ("Cannot get drive udi");
}
if ((drive = libhal_drive_from_udi (hal_ctx, drive_udi)) == NULL) {
unknown_eject_error ("Cannot get drive from udi");
}
/* first, unmount all volumes */
volume_udis = libhal_drive_find_all_volumes (hal_ctx, drive, &num_volumes);
if (volume_udis == NULL)
unknown_eject_error ("Cannot get all enclosed volumes");
for (i = 0; i < num_volumes; i++) {
char *volume_udi;
LibHalVolume *volume_to_unmount;
volume_udi = volume_udis[i];
#ifdef DEBUG
printf ("processing drive's volume %s (%d of %d)\n", volume_udi, i + 1, num_volumes);
#endif
volume_to_unmount = libhal_volume_from_udi (hal_ctx, volume_udi);
if (volume_to_unmount == NULL) {
unknown_eject_error ("Cannot get volume object");
}
if (libhal_volume_is_mounted (volume_to_unmount)) {
#ifdef DEBUG
printf (" unmounting\n");
#endif
/* only lock around unmount call because hald's /proc/mounts handler
* will also want to lock the /media/.hal-mtab-lock file for peeking
*/
if (!lock_hal_mtab ()) {
unknown_eject_error ("Cannot obtain lock on /media/.hal-mtab");
}
handle_unmount (hal_ctx,
#ifdef HAVE_POLKIT
pol_ctx,
#endif
volume_udi, volume_to_unmount, drive,
libhal_volume_get_device_file (volume_to_unmount),
invoked_by_uid, invoked_by_syscon_name,
FALSE, FALSE, system_bus); /* use neither lazy nor force */
unlock_hal_mtab ();
} else {
#ifdef DEBUG
printf (" not mounted\n");
#endif
}
libhal_volume_free (volume_to_unmount);
}
libhal_free_string_array (volume_udis);
/* now attempt the eject */
handle_eject (hal_ctx,
#ifdef HAVE_POLKIT
pol_ctx,
#endif
libhal_drive_get_udi (drive),
drive,
libhal_drive_get_device_file (drive),
invoked_by_uid,
invoked_by_syscon_name,
FALSE, system_bus);
return 0;
}