/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * 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.
- */
#include <errno.h>
#include <getopt.h>
#include <string.h>
#include <unistd.h>
+#include "creds-util.h"
#include "parse-util.h"
#include "process-util.h"
+#include "static-destruct.h"
+#include "strv.h"
#include "syslog-util.h"
#include "time-util.h"
#include "udevadm.h"
#include "udev-ctrl.h"
-#include "util.h"
#include "virt.h"
+static char **arg_env = NULL;
+static usec_t arg_timeout = 60 * USEC_PER_SEC;
+static bool arg_ping = false;
+static bool arg_reload = false;
+static bool arg_exit = false;
+static int arg_max_children = -1;
+static int arg_log_level = -1;
+static int arg_start_exec_queue = -1;
+static bool arg_load_credentials = false;
+
+STATIC_DESTRUCTOR_REGISTER(arg_env, strv_freep);
+
+static bool arg_has_control_commands(void) {
+ return
+ arg_exit ||
+ arg_log_level >= 0 ||
+ arg_start_exec_queue >= 0 ||
+ arg_reload ||
+ !strv_isempty(arg_env) ||
+ arg_max_children >= 0 ||
+ arg_ping;
+}
+
static int help(void) {
printf("%s control OPTION\n\n"
"Control the udev daemon.\n\n"
" -m --children-max=N Maximum number of children\n"
" --ping Wait for udev to respond to a ping message\n"
" -t --timeout=SECONDS Maximum time to block for a reply\n"
- , program_invocation_short_name);
+ " --load-credentials Load udev rules from credentials\n",
+ program_invocation_short_name);
return 0;
}
-int control_main(int argc, char *argv[], void *userdata) {
- _cleanup_(udev_ctrl_unrefp) struct udev_ctrl *uctrl = NULL;
- usec_t timeout = 60 * USEC_PER_SEC;
- int c, r;
-
+static int parse_argv(int argc, char *argv[]) {
enum {
ARG_PING = 0x100,
+ ARG_LOAD_CREDENTIALS,
};
static const struct option options[] = {
- { "exit", no_argument, NULL, 'e' },
- { "log-level", required_argument, NULL, 'l' },
- { "log-priority", required_argument, NULL, 'l' }, /* for backward compatibility */
- { "stop-exec-queue", no_argument, NULL, 's' },
- { "start-exec-queue", no_argument, NULL, 'S' },
- { "reload", no_argument, NULL, 'R' },
- { "reload-rules", no_argument, NULL, 'R' }, /* alias for -R */
- { "property", required_argument, NULL, 'p' },
- { "env", required_argument, NULL, 'p' }, /* alias for -p */
- { "children-max", required_argument, NULL, 'm' },
- { "ping", no_argument, NULL, ARG_PING },
- { "timeout", required_argument, NULL, 't' },
- { "version", no_argument, NULL, 'V' },
- { "help", no_argument, NULL, 'h' },
+ { "exit", no_argument, NULL, 'e' },
+ { "log-level", required_argument, NULL, 'l' },
+ { "log-priority", required_argument, NULL, 'l' }, /* for backward compatibility */
+ { "stop-exec-queue", no_argument, NULL, 's' },
+ { "start-exec-queue", no_argument, NULL, 'S' },
+ { "reload", no_argument, NULL, 'R' },
+ { "reload-rules", no_argument, NULL, 'R' }, /* alias for -R */
+ { "property", required_argument, NULL, 'p' },
+ { "env", required_argument, NULL, 'p' }, /* alias for -p */
+ { "children-max", required_argument, NULL, 'm' },
+ { "ping", no_argument, NULL, ARG_PING },
+ { "timeout", required_argument, NULL, 't' },
+ { "load-credentials", no_argument, NULL, ARG_LOAD_CREDENTIALS },
+ { "version", no_argument, NULL, 'V' },
+ { "help", no_argument, NULL, 'h' },
{}
};
- if (running_in_chroot() > 0) {
- log_info("Running in chroot, ignoring request.");
- return 0;
- }
-
- if (argc <= 1)
- return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
- "This command expects one or more options.");
+ int c, r;
- r = udev_ctrl_new(&uctrl);
- if (r < 0)
- return log_error_errno(r, "Failed to initialize udev control: %m");
+ assert(argc >= 0);
+ assert(argv);
while ((c = getopt_long(argc, argv, "el:sSRp:m:t:Vh", options, NULL)) >= 0)
switch (c) {
+
case 'e':
- r = udev_ctrl_send_exit(uctrl);
- if (r == -ENOANO)
- log_warning("Cannot specify --exit after --exit, ignoring.");
- else if (r < 0)
- return log_error_errno(r, "Failed to send exit request: %m");
+ arg_exit = true;
break;
- case 'l':
- r = log_level_from_string(optarg);
- if (r < 0)
- return log_error_errno(r, "Failed to parse log level '%s': %m", optarg);
- r = udev_ctrl_send_set_log_level(uctrl, r);
- if (r == -ENOANO)
- log_warning("Cannot specify --log-level after --exit, ignoring.");
- else if (r < 0)
- return log_error_errno(r, "Failed to send request to set log level: %m");
+ case 'l':
+ arg_log_level = log_level_from_string(optarg);
+ if (arg_log_level < 0)
+ return log_error_errno(arg_log_level, "Failed to parse log level '%s': %m", optarg);
break;
+
case 's':
- r = udev_ctrl_send_stop_exec_queue(uctrl);
- if (r == -ENOANO)
- log_warning("Cannot specify --stop-exec-queue after --exit, ignoring.");
- else if (r < 0)
- return log_error_errno(r, "Failed to send request to stop exec queue: %m");
+ arg_start_exec_queue = false;
break;
+
case 'S':
- r = udev_ctrl_send_start_exec_queue(uctrl);
- if (r == -ENOANO)
- log_warning("Cannot specify --start-exec-queue after --exit, ignoring.");
- else if (r < 0)
- return log_error_errno(r, "Failed to send request to start exec queue: %m");
+ arg_start_exec_queue = true;
break;
+
case 'R':
- r = udev_ctrl_send_reload(uctrl);
- if (r == -ENOANO)
- log_warning("Cannot specify --reload after --exit, ignoring.");
- else if (r < 0)
- return log_error_errno(r, "Failed to send reload request: %m");
+ arg_reload = true;
break;
+
case 'p':
if (!strchr(optarg, '='))
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "expect <KEY>=<value> instead of '%s'", optarg);
- r = udev_ctrl_send_set_env(uctrl, optarg);
- if (r == -ENOANO)
- log_warning("Cannot specify --property after --exit, ignoring.");
- else if (r < 0)
- return log_error_errno(r, "Failed to send request to update environment: %m");
+ r = strv_extend(&arg_env, optarg);
+ if (r < 0)
+ return log_error_errno(r, "Failed to extend environment: %m");
+
break;
+
case 'm': {
unsigned i;
-
r = safe_atou(optarg, &i);
if (r < 0)
- return log_error_errno(r, "Failed to parse maximum number of events '%s': %m", optarg);
-
- r = udev_ctrl_send_set_children_max(uctrl, i);
- if (r == -ENOANO)
- log_warning("Cannot specify --children-max after --exit, ignoring.");
- else if (r < 0)
- return log_error_errno(r, "Failed to send request to set number of children: %m");
+ return log_error_errno(r, "Failed to parse maximum number of children '%s': %m", optarg);
+ arg_max_children = i;
break;
}
+
case ARG_PING:
- r = udev_ctrl_send_ping(uctrl);
- if (r == -ENOANO)
- log_error("Cannot specify --ping after --exit, ignoring.");
- else if (r < 0)
- return log_error_errno(r, "Failed to send a ping message: %m");
+ arg_ping = true;
break;
+
case 't':
- r = parse_sec(optarg, &timeout);
+ r = parse_sec(optarg, &arg_timeout);
if (r < 0)
return log_error_errno(r, "Failed to parse timeout value '%s': %m", optarg);
break;
+
+ case ARG_LOAD_CREDENTIALS:
+ arg_load_credentials = true;
+ break;
+
case 'V':
return print_version();
+
case 'h':
return help();
+
case '?':
return -EINVAL;
+
default:
- assert_not_reached("Unknown option.");
+ assert_not_reached();
}
+ if (!arg_has_control_commands() && !arg_load_credentials)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "No control command option is specified.");
+
if (optind < argc)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Extraneous argument: %s", argv[optind]);
- r = udev_ctrl_wait(uctrl, timeout);
+ return 1;
+}
+
+static int send_control_commands(void) {
+ _cleanup_(udev_ctrl_unrefp) UdevCtrl *uctrl = NULL;
+ int r;
+
+ r = udev_ctrl_new(&uctrl);
+ if (r < 0)
+ return log_error_errno(r, "Failed to initialize udev control: %m");
+
+ if (arg_exit) {
+ r = udev_ctrl_send_exit(uctrl);
+ if (r < 0)
+ return log_error_errno(r, "Failed to send exit request: %m");
+ return 0;
+ }
+
+ if (arg_log_level >= 0) {
+ r = udev_ctrl_send_set_log_level(uctrl, arg_log_level);
+ if (r < 0)
+ return log_error_errno(r, "Failed to send request to set log level: %m");
+ }
+
+ if (arg_start_exec_queue == false) {
+ r = udev_ctrl_send_stop_exec_queue(uctrl);
+ if (r < 0)
+ return log_error_errno(r, "Failed to send request to stop exec queue: %m");
+ }
+
+ if (arg_start_exec_queue == true) {
+ r = udev_ctrl_send_start_exec_queue(uctrl);
+ if (r < 0)
+ return log_error_errno(r, "Failed to send request to start exec queue: %m");
+ }
+
+ if (arg_reload) {
+ r = udev_ctrl_send_reload(uctrl);
+ if (r < 0)
+ return log_error_errno(r, "Failed to send reload request: %m");
+ }
+
+ STRV_FOREACH(env, arg_env) {
+ r = udev_ctrl_send_set_env(uctrl, *env);
+ if (r < 0)
+ return log_error_errno(r, "Failed to send request to update environment: %m");
+ }
+
+ if (arg_max_children >= 0) {
+ r = udev_ctrl_send_set_children_max(uctrl, arg_max_children);
+ if (r < 0)
+ return log_error_errno(r, "Failed to send request to set number of children: %m");
+ }
+
+ if (arg_ping) {
+ r = udev_ctrl_send_ping(uctrl);
+ if (r < 0)
+ return log_error_errno(r, "Failed to send a ping message: %m");
+ }
+
+ r = udev_ctrl_wait(uctrl, arg_timeout);
if (r < 0)
return log_error_errno(r, "Failed to wait for daemon to reply: %m");
return 0;
}
+
+int control_main(int argc, char *argv[], void *userdata) {
+ int r;
+
+ if (running_in_chroot() > 0) {
+ log_info("Running in chroot, ignoring request.");
+ return 0;
+ }
+
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ return r;
+
+ if (arg_load_credentials) {
+ static const PickUpCredential table[] = {
+ { "udev.conf.", "/run/udev/udev.conf.d/", ".conf" },
+ { "udev.rules.", "/run/udev/rules.d/", ".rules" },
+ };
+ r = pick_up_credentials(table, ELEMENTSOF(table));
+ if (r < 0)
+ return r;
+ }
+
+ if (arg_has_control_commands()) {
+ r = send_control_commands();
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
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