+++ /dev/null
-/*
- * Copyright (C) 2008-2009 Kay Sievers <kay@vrfy.org>
- *
- * 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, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stddef.h>
-#include <string.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <getopt.h>
-#include <errno.h>
-#include <fcntl.h>
-
-#include "udev.h"
-#include "udev-util.h"
-#include "udevadm-util.h"
-#include "util.h"
-
-static int verbose;
-static int dry_run;
-
-static void exec_list(struct udev_enumerate *udev_enumerate, const char *action) {
- struct udev_list_entry *entry;
-
- udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(udev_enumerate)) {
- char filename[UTIL_PATH_SIZE];
- int fd;
-
- if (verbose)
- printf("%s\n", udev_list_entry_get_name(entry));
- if (dry_run)
- continue;
- strscpyl(filename, sizeof(filename), udev_list_entry_get_name(entry), "/uevent", NULL);
- fd = open(filename, O_WRONLY|O_CLOEXEC);
- if (fd < 0)
- continue;
- if (write(fd, action, strlen(action)) < 0)
- log_debug_errno(errno, "error writing '%s' to '%s': %m", action, filename);
- close(fd);
- }
-}
-
-static const char *keyval(const char *str, const char **val, char *buf, size_t size) {
- char *pos;
-
- strscpy(buf, size,str);
- pos = strchr(buf, '=');
- if (pos != NULL) {
- pos[0] = 0;
- pos++;
- }
- *val = pos;
- return buf;
-}
-
-static void help(void) {
- printf("%s trigger OPTIONS\n\n"
- "Request events from the kernel.\n\n"
- " -h --help Show this help\n"
- " --version Show package version\n"
- " -v --verbose Print the list of devices while running\n"
- " -n --dry-run Do not actually trigger the events\n"
- " -t --type= Type of events to trigger\n"
- " devices sysfs devices (default)\n"
- " subsystems sysfs subsystems and drivers\n"
- " -c --action=ACTION Event action value, default is \"change\"\n"
- " -s --subsystem-match=SUBSYSTEM Trigger devices from a matching subsystem\n"
- " -S --subsystem-nomatch=SUBSYSTEM Exclude devices from a matching subsystem\n"
- " -a --attr-match=FILE[=VALUE] Trigger devices with a matching attribute\n"
- " -A --attr-nomatch=FILE[=VALUE] Exclude devices with a matching attribute\n"
- " -p --property-match=KEY=VALUE Trigger devices with a matching property\n"
- " -g --tag-match=KEY=VALUE Trigger devices with a matching property\n"
- " -y --sysname-match=NAME Trigger devices with this /sys path\n"
- " --name-match=NAME Trigger devices with this /dev name\n"
- " -b --parent-match=NAME Trigger devices with that parent device\n"
- , program_invocation_short_name);
-}
-
-static int adm_trigger(struct udev *udev, int argc, char *argv[]) {
- enum {
- ARG_NAME = 0x100,
- };
-
- static const struct option options[] = {
- { "verbose", no_argument, NULL, 'v' },
- { "dry-run", no_argument, NULL, 'n' },
- { "type", required_argument, NULL, 't' },
- { "action", required_argument, NULL, 'c' },
- { "subsystem-match", required_argument, NULL, 's' },
- { "subsystem-nomatch", required_argument, NULL, 'S' },
- { "attr-match", required_argument, NULL, 'a' },
- { "attr-nomatch", required_argument, NULL, 'A' },
- { "property-match", required_argument, NULL, 'p' },
- { "tag-match", required_argument, NULL, 'g' },
- { "sysname-match", required_argument, NULL, 'y' },
- { "name-match", required_argument, NULL, ARG_NAME },
- { "parent-match", required_argument, NULL, 'b' },
- { "help", no_argument, NULL, 'h' },
- {}
- };
- enum {
- TYPE_DEVICES,
- TYPE_SUBSYSTEMS,
- } device_type = TYPE_DEVICES;
- const char *action = "change";
- _cleanup_udev_enumerate_unref_ struct udev_enumerate *udev_enumerate = NULL;
- int c;
-
- udev_enumerate = udev_enumerate_new(udev);
- if (udev_enumerate == NULL)
- return 1;
-
- while ((c = getopt_long(argc, argv, "vno:t:c:s:S:a:A:p:g:y:b:h", options, NULL)) >= 0) {
- const char *key;
- const char *val;
- char buf[UTIL_PATH_SIZE];
-
- switch (c) {
- case 'v':
- verbose = 1;
- break;
- case 'n':
- dry_run = 1;
- break;
- case 't':
- if (streq(optarg, "devices"))
- device_type = TYPE_DEVICES;
- else if (streq(optarg, "subsystems"))
- device_type = TYPE_SUBSYSTEMS;
- else {
- log_error("unknown type --type=%s", optarg);
- return 2;
- }
- break;
- case 'c':
- if (!nulstr_contains("add\0" "remove\0" "change\0", optarg)) {
- log_error("unknown action '%s'", optarg);
- return 2;
- } else
- action = optarg;
-
- break;
- case 's':
- udev_enumerate_add_match_subsystem(udev_enumerate, optarg);
- break;
- case 'S':
- udev_enumerate_add_nomatch_subsystem(udev_enumerate, optarg);
- break;
- case 'a':
- key = keyval(optarg, &val, buf, sizeof(buf));
- udev_enumerate_add_match_sysattr(udev_enumerate, key, val);
- break;
- case 'A':
- key = keyval(optarg, &val, buf, sizeof(buf));
- udev_enumerate_add_nomatch_sysattr(udev_enumerate, key, val);
- break;
- case 'p':
- key = keyval(optarg, &val, buf, sizeof(buf));
- udev_enumerate_add_match_property(udev_enumerate, key, val);
- break;
- case 'g':
- udev_enumerate_add_match_tag(udev_enumerate, optarg);
- break;
- case 'y':
- udev_enumerate_add_match_sysname(udev_enumerate, optarg);
- break;
- case 'b': {
- _cleanup_udev_device_unref_ struct udev_device *dev;
-
- dev = find_device(udev, optarg, "/sys");
- if (dev == NULL) {
- log_error("unable to open the device '%s'", optarg);
- return 2;
- }
-
- udev_enumerate_add_match_parent(udev_enumerate, dev);
- break;
- }
-
- case ARG_NAME: {
- _cleanup_udev_device_unref_ struct udev_device *dev;
-
- dev = find_device(udev, optarg, "/dev/");
- if (dev == NULL) {
- log_error("unable to open the device '%s'", optarg);
- return 2;
- }
-
- udev_enumerate_add_match_parent(udev_enumerate, dev);
- break;
- }
-
- case 'h':
- help();
- return 0;
- case '?':
- return 1;
- default:
- assert_not_reached("Unknown option");
- }
- }
-
- for (; optind < argc; optind++) {
- _cleanup_udev_device_unref_ struct udev_device *dev;
-
- dev = find_device(udev, argv[optind], NULL);
- if (dev == NULL) {
- log_error("unable to open the device '%s'", argv[optind]);
- return 2;
- }
-
- udev_enumerate_add_match_parent(udev_enumerate, dev);
- }
-
- switch (device_type) {
- case TYPE_SUBSYSTEMS:
- udev_enumerate_scan_subsystems(udev_enumerate);
- exec_list(udev_enumerate, action);
- return 0;
- case TYPE_DEVICES:
- udev_enumerate_scan_devices(udev_enumerate);
- exec_list(udev_enumerate, action);
- return 0;
- default:
- assert_not_reached("device_type");
- }
-}
-
-const struct udevadm_cmd udevadm_trigger = {
- .name = "trigger",
- .cmd = adm_trigger,
- .help = "Request events from the kernel",
-};
~ianmdlvl / elogind.git / blobdiff