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-rw-r--r--tools/hal-disable-polling.c276
1 files changed, 276 insertions, 0 deletions
diff --git a/tools/hal-disable-polling.c b/tools/hal-disable-polling.c
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+/***************************************************************************
+ * CVSID: $Id$
+ *
+ * hal-disable-polling.c : Disable polling on a drive
+ *
+ * Copyright (C) 2007 David Zeuthen, <david@fubar.dk>
+ *
+ * Licensed under the Academic Free License version 2.1
+ *
+ * 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 <string.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <glib.h>
+#include <libhal.h>
+
+/**
+ * usage:
+ * @argc: Number of arguments given to program
+ * @argv: Arguments given to program
+ *
+ * Print out program usage.
+ */
+static void
+usage (int argc, char *argv[])
+{
+ fprintf (stderr,
+ "\n"
+ "usage : hal-disable-polling [--udi <udi> | --device <device-file>]\n"
+ " [--enable-polling]\n"
+ " [--help] [--version]\n");
+ fprintf (stderr,
+ "\n"
+ " --udi Unique Device Id\n"
+ " --device Device file\n"
+ " --enable-polling Enable polling instead of disabling it\n"
+ " --version Show version and exit\n"
+ " --help Show this information and exit\n"
+ "\n"
+ "This program is provided to make HAL stop polling a drive. Please read.\n"
+ "the entire manual page before using this program.\n"
+ "\n");
+}
+
+/**
+ * main:
+ * @argc: Number of arguments given to program
+ * @argv: Arguments given to program
+ *
+ * Returns: Return code
+ *
+ * Main entry point
+ */
+int
+main (int argc, char *argv[])
+{
+ char *udi = NULL;
+ char *device = NULL;
+ dbus_bool_t is_version = FALSE;
+ dbus_bool_t enable_polling = FALSE;
+ DBusError error;
+ LibHalContext *hal_ctx;
+ FILE *f;
+ char *filename;
+
+ if (argc <= 1) {
+ usage (argc, argv);
+ return 1;
+ }
+
+ while (1) {
+ int c;
+ int option_index = 0;
+ const char *opt;
+ static struct option long_options[] = {
+ {"udi", 1, NULL, 0},
+ {"device", 1, NULL, 0},
+ {"enable-polling", 0, NULL, 0},
+ {"version", 0, NULL, 0},
+ {"help", 0, NULL, 0},
+ {NULL, 0, NULL, 0}
+ };
+
+ c = getopt_long (argc, argv, "",
+ long_options, &option_index);
+ if (c == -1)
+ break;
+
+ switch (c) {
+ case 0:
+ opt = long_options[option_index].name;
+
+ if (strcmp (opt, "help") == 0) {
+ usage (argc, argv);
+ return 0;
+ } else if (strcmp (opt, "version") == 0) {
+ is_version = TRUE;
+ } else if (strcmp (opt, "udi") == 0) {
+ udi = strdup (optarg);
+ } else if (strcmp (opt, "device") == 0) {
+ device = strdup (optarg);
+ } else if (strcmp (opt, "enable-polling") == 0) {
+ enable_polling = TRUE;
+ }
+ break;
+
+ default:
+ usage (argc, argv);
+ return 1;
+ break;
+ }
+ }
+
+ if (is_version) {
+ printf ("hal-disable-polling " PACKAGE_VERSION "\n");
+ return 0;
+ }
+
+ if (udi == NULL && device == NULL) {
+ usage (argc, argv);
+ return 1;
+ }
+
+ if (udi != NULL && device != NULL) {
+ usage (argc, argv);
+ return 1;
+ }
+
+ dbus_error_init (&error);
+ if ((hal_ctx = libhal_ctx_new ()) == NULL) {
+ fprintf (stderr, "error: libhal_ctx_new\n");
+ return 1;
+ }
+ if (!libhal_ctx_set_dbus_connection (hal_ctx, dbus_bus_get (DBUS_BUS_SYSTEM, &error))) {
+ fprintf (stderr, "error: libhal_ctx_set_dbus_connection: %s: %s\n", error.name, error.message);
+ LIBHAL_FREE_DBUS_ERROR (&error);
+ return 1;
+ }
+ if (!libhal_ctx_init (hal_ctx, &error)) {
+ if (dbus_error_is_set(&error)) {
+ fprintf (stderr, "error: libhal_ctx_init: %s: %s\n", error.name, error.message);
+ dbus_error_free (&error);
+ }
+ fprintf (stderr, "Could not initialise connection to hald.\n"
+ "Normally this means the HAL daemon (hald) is not running or not ready.\n");
+ return 1;
+ }
+
+ if (getuid () != 0) {
+ fprintf (stderr, "This program requires super user (root) privileges.\n");
+ return 1;
+ }
+
+ if (device != NULL) {
+ char **devices;
+ int num_devices;
+ int n;
+
+ devices = libhal_manager_find_device_string_match (hal_ctx, "block.device", device, &num_devices, NULL);
+ if (devices == NULL) {
+ fprintf (stderr, "Cannot find device %s.\n", device);
+ return 1;
+ }
+
+ for (n = 0; devices[n] != NULL; n++) {
+ if (libhal_device_query_capability (hal_ctx, devices[n], "storage", NULL)) {
+ udi = devices[n];
+ break;
+ }
+ }
+
+ if (udi == NULL) {
+ fprintf (stderr, "Cannot find storage device %s.\n", device);
+ return 1;
+ }
+
+ /* mmmkay, we don't care about leaking the variable devices... mmkay? mmkay! */
+ } else {
+ if (!libhal_device_exists (hal_ctx, udi, &error)) {
+ fprintf (stderr, "Cannot find device with udi %s.\n", udi);
+ return 1;
+ }
+ if (!libhal_device_query_capability (hal_ctx, udi, "storage", NULL)) {
+ fprintf (stderr, "Device with udi %s is not a storage device.\n", udi);
+ return 1;
+ }
+ device = libhal_device_get_property_string (hal_ctx, udi, "block.device", NULL);
+ if (device == NULL) {
+ fprintf (stderr, "Device with udi %s does not have block.device set.\n", udi);
+ return 1;
+ }
+ }
+
+ if (!libhal_device_get_property_bool (hal_ctx, udi, "storage.removable", NULL)) {
+ fprintf (stderr, "The given drive don't use removable media so it's not polled anyway.\n");
+ return 1;
+ }
+
+ filename = g_strdup_printf (PACKAGE_SYSCONF_DIR "/hal/fdi/information/media-check-disable-%s.fdi",
+ g_basename (udi));
+
+ if (enable_polling) {
+ if (libhal_device_get_property_bool (hal_ctx, udi, "storage.media_check_enabled", NULL)) {
+ fprintf (stderr, "Polling is already enabled on the given drive.\n");
+ return 1;
+ }
+
+ if (!g_file_test (filename, G_FILE_TEST_EXISTS)) {
+ fprintf (stderr, "Cannot find fdi file %s. Perhaps polling wasn't disabled using this tool?\n", filename);
+ return 1;
+ }
+ if (unlink (filename) != 0) {
+ fprintf (stderr, "Cannot delete fdi file %s.\n", filename);
+ return 1;
+ }
+ } else {
+ if (!libhal_device_get_property_bool (hal_ctx, udi, "storage.media_check_enabled", NULL)) {
+ fprintf (stderr, "Polling is already disabled on the given drive.\n");
+ return 1;
+ }
+
+ if (g_file_test (filename, G_FILE_TEST_EXISTS)) {
+ fprintf (stderr, "The fdi file %s already exist. Cowardly refusing to overwrite it.\n", filename);
+ return 1;
+ }
+
+ f = fopen (filename, "w");
+ if (f == NULL) {
+ fprintf (stderr, "Cannot open %s for writing.\n", filename);
+ return 1;
+ }
+ fprintf (f, "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+ "\n"
+ "<deviceinfo version=\"0.2\">\n"
+ " <device>\n"
+ " <match key=\"info.udi\" string=\"%s\">\n"
+ " <merge key=\"storage.media_check_enabled\" type=\"bool\">false</merge>\n"
+ " </match>\n"
+ " </device>\n"
+ "</deviceinfo>\n"
+ "\n", udi);
+ fclose (f);
+ }
+
+ libhal_device_reprobe (hal_ctx, udi, &error);
+
+ if (enable_polling)
+ printf ("Polling for drive %s have been enabled. The fdi file deleted was\n"
+ " %s\n", device, filename);
+ else
+ printf ("Polling for drive %s have been disabled. The fdi file written was\n"
+ " %s\n", device, filename);
+
+ return 0;
+}
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