#include <string.h>
#include <unistd.h>
+#include "parse-util.h"
#include "process-util.h"
+#include "syslog-util.h"
#include "time-util.h"
-#include "udev.h"
-#include "udevadm-util.h"
+#include "udevadm.h"
+#include "udev-ctrl.h"
+#include "util.h"
+#include "virt.h"
-static void print_help(void) {
+static int help(void) {
printf("%s control OPTION\n\n"
"Control the udev daemon.\n\n"
" -h --help Show this help\n"
" -R --reload Reload rules and databases\n"
" -p --property=KEY=VALUE Set a global property for all events\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);
+
+ return 0;
}
-static int adm_control(struct udev *udev, int argc, char *argv[]) {
+int control_main(int argc, char *argv[], void *userdata) {
_cleanup_(udev_ctrl_unrefp) struct udev_ctrl *uctrl = NULL;
- int timeout = 60;
- int rc = 1, c;
+ usec_t timeout = 60 * USEC_PER_SEC;
+ int c, r;
+
+ enum {
+ ARG_PING = 0x100,
+ };
static const struct option options[] = {
- { "exit", no_argument, NULL, 'e' },
- { "log-priority", required_argument, NULL, 'l' },
- { "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' },
- { "timeout", required_argument, NULL, 't' },
- { "version", no_argument, NULL, 'V' },
- { "help", no_argument, NULL, 'h' },
+ { "exit", no_argument, NULL, 'e' },
+ { "log-priority", required_argument, NULL, 'l' },
+ { "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' },
{}
};
- if (must_be_root() < 0)
- return 1;
+ if (running_in_chroot() > 0) {
+ log_info("Running in chroot, ignoring request.");
+ return 0;
+ }
- uctrl = udev_ctrl_new(udev);
- if (uctrl == NULL)
- return 2;
+ if (argc <= 1)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "This command expects one or more options.");
+
+ r = udev_ctrl_new(&uctrl);
+ if (r < 0)
+ return log_error_errno(r, "Failed to initialize udev control: %m");
while ((c = getopt_long(argc, argv, "el:sSRp:m:t:Vh", options, NULL)) >= 0)
switch (c) {
case 'e':
- if (udev_ctrl_send_exit(uctrl, timeout) < 0)
- rc = 2;
- else
- rc = 0;
+ 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");
break;
- case 'l': {
- int i;
-
- i = util_log_priority(optarg);
- if (i < 0) {
- log_error("invalid number '%s'", optarg);
- return rc;
- }
- if (udev_ctrl_send_set_log_level(uctrl, util_log_priority(optarg), timeout) < 0)
- rc = 2;
- else
- rc = 0;
+ case 'l':
+ r = log_level_from_string(optarg);
+ if (r < 0)
+ return log_error_errno(r, "Failed to parse log priority '%s': %m", optarg);
+
+ r = udev_ctrl_send_set_log_level(uctrl, r);
+ if (r == -ENOANO)
+ log_warning("Cannot specify --log-priority after --exit, ignoring.");
+ else if (r < 0)
+ return log_error_errno(r, "Failed to send request to set log level: %m");
break;
- }
case 's':
- if (udev_ctrl_send_stop_exec_queue(uctrl, timeout) < 0)
- rc = 2;
- else
- rc = 0;
+ 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");
break;
case 'S':
- if (udev_ctrl_send_start_exec_queue(uctrl, timeout) < 0)
- rc = 2;
- else
- rc = 0;
+ 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");
break;
case 'R':
- if (udev_ctrl_send_reload(uctrl, timeout) < 0)
- rc = 2;
- else
- rc = 0;
+ 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");
break;
case 'p':
- if (strchr(optarg, '=') == NULL) {
- log_error("expect <KEY>=<value> instead of '%s'", optarg);
- return rc;
- }
- if (udev_ctrl_send_set_env(uctrl, optarg, timeout) < 0)
- rc = 2;
- else
- rc = 0;
+ 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");
break;
case 'm': {
- char *endp;
- int i;
-
- i = strtoul(optarg, &endp, 0);
- if (endp[0] != '\0' || i < 1) {
- log_error("invalid number '%s'", optarg);
- return rc;
- }
- if (udev_ctrl_send_set_children_max(uctrl, i, timeout) < 0)
- rc = 2;
- else
- rc = 0;
- break;
- }
- case 't': {
- int r, seconds;
- usec_t s;
+ unsigned i;
- r = parse_sec(optarg, &s);
+ r = safe_atou(optarg, &i);
if (r < 0)
- return log_error_errno(r, "Failed to parse timeout value '%s'.", optarg);
-
- if (DIV_ROUND_UP(s, USEC_PER_SEC) > INT_MAX)
- log_error("Timeout value is out of range.");
- else {
- seconds = s != USEC_INFINITY ? (int) DIV_ROUND_UP(s, USEC_PER_SEC) : INT_MAX;
- timeout = seconds;
- rc = 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");
break;
}
- case 'V':
- print_version();
- rc = 0;
+ 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");
break;
- case 'h':
- print_help();
- rc = 0;
+ case 't':
+ r = parse_sec(optarg, &timeout);
+ if (r < 0)
+ return log_error_errno(r, "Failed to parse timeout value '%s': %m", optarg);
break;
+ case 'V':
+ return print_version();
+ case 'h':
+ return help();
+ case '?':
+ return -EINVAL;
+ default:
+ assert_not_reached("Unknown option.");
}
if (optind < argc)
- log_error("Extraneous argument: %s", argv[optind]);
- else if (optind == 1)
- log_error("Option missing");
- return rc;
-}
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Extraneous argument: %s", argv[optind]);
-const struct udevadm_cmd udevadm_control = {
- .name = "control",
- .cmd = adm_control,
- .help = "Control the udev daemon",
-};
+ r = udev_ctrl_wait(uctrl, timeout);
+ if (r < 0)
+ return log_error_errno(r, "Failed to wait for daemon to reply: %m");
+
+ return 0;
+}
projects / thirdparty / systemd.git / blobdiff