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/***************************************************************************
*
* umount-hal.c : Plug-in for umount(8) - see RH #188193
*
* https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=188193
*
* Copyright (C) 2007 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 <libhal.h>
#include <libhal-storage.h>
int
main (int argc, char *argv[])
{
int ret;
char *device_file_or_mount_point;
DBusError error;
DBusConnection *con;
LibHalContext *hal_ctx;
LibHalVolume *vol;
DBusMessage *message;
DBusMessage *reply;
int hal_retcode;
char **options = NULL;
int num_options = 0;
ret = 1;
if (argc < 2 || strlen (argv[1]) == 0) {
fprintf (stderr, "%s: this program is only supposed to be invoked by umount(8).\n", argv[0]);
goto out;
}
/* it appears the device file / mount point is always the
* first argument. TODO XXX FIXME: we ought to honor
* umount(8) options like -v for verbose.
*/
device_file_or_mount_point = argv[1];
dbus_error_init (&error);
con = dbus_bus_get (DBUS_BUS_SYSTEM, &error);
if (con == NULL) {
fprintf (stderr, "%s: dbus_bus_get(): %s: %s\n", argv[0], error.name, error.message);
goto out;
}
hal_ctx = libhal_ctx_new ();
libhal_ctx_set_dbus_connection (hal_ctx, con);
if (!libhal_ctx_init (hal_ctx, &error)) {
if (dbus_error_is_set(&error)) {
fprintf (stderr, "%s: libhal_ctx_init: %s: %s\n", argv[0], error.name, error.message);
dbus_error_free (&error);
} else {
fprintf (stderr, "%s: libhal_ctx_init failed. Is hald running?\n", argv[0]);
}
goto out;
}
vol = libhal_volume_from_device_file (hal_ctx, device_file_or_mount_point);
if (vol == NULL) {
/* it might be a mount point! */
if (device_file_or_mount_point[strlen (device_file_or_mount_point) - 1] == '/') {
device_file_or_mount_point[strlen (device_file_or_mount_point) - 1] = '\0';
}
vol = libhal_volume_from_mount_point (hal_ctx, device_file_or_mount_point);
if (vol == NULL) {
fprintf (stderr, "%s: %s is not recognized by hal\n", argv[0], device_file_or_mount_point);
goto out;
}
}
message = dbus_message_new_method_call ("org.freedesktop.Hal",
libhal_volume_get_udi (vol),
"org.freedesktop.Hal.Device.Volume",
"Unmount");
if (message == NULL) {
goto out;
}
if (!dbus_message_append_args (message,
DBUS_TYPE_ARRAY, DBUS_TYPE_STRING, &options, num_options,
DBUS_TYPE_INVALID)) {
goto out;
}
if (!(reply = dbus_connection_send_with_reply_and_block (con,
message,
-1,
&error)) || dbus_error_is_set (&error)) {
fprintf (stderr, "%s: Unmounting %s failed: %s: %s\n",
argv[0], device_file_or_mount_point, error.name, error.message);
goto out;
}
if (!dbus_message_get_args (reply,
&error,
DBUS_TYPE_INT32, &hal_retcode,
DBUS_TYPE_INVALID)) {
/* should never happen */
goto out;
}
if (hal_retcode != 0) {
/* should never happen; we should get an exception instead */
goto out;
}
ret = 0;
out:
return ret;
}
|
