chiark / gitweb /
do not remove static nodes on module unload
[elogind.git] / udev / udevadm-trigger.c
index e475e409495fdacd209c9d7e4274e3181b39829d..d94c9568d1793aa8da64bd3311111410783b585c 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008 Kay Sievers <kayi.sievers@vrfy.org>
+ * Copyright (C) 2008-2009 Kay Sievers <kay.sievers@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
@@ -49,8 +49,7 @@ static void exec_list(struct udev_enumerate *udev_enumerate, const char *action)
                        printf("%s\n", udev_list_entry_get_name(entry));
                if (dry_run)
                        continue;
-               util_strlcpy(filename, udev_list_entry_get_name(entry), sizeof(filename));
-               util_strlcat(filename, "/uevent", sizeof(filename));
+               util_strscpyl(filename, sizeof(filename), udev_list_entry_get_name(entry), "/uevent", NULL);
                fd = open(filename, O_WRONLY);
                if (fd < 0) {
                        dbg(udev, "error on opening %s: %m\n", filename);
@@ -76,18 +75,35 @@ static int scan_failed(struct udev_enumerate *udev_enumerate)
        return 0;
 }
 
-int udevadm_trigger(struct udev *udev, int argc, char *argv[])
+static const char *keyval(const char *str, const char **val, char *buf, size_t size)
+{
+       char *pos;
+
+       util_strscpy(buf, size,str);
+       pos = strchr(buf, '=');
+       if (pos != NULL) {
+               pos[0] = 0;
+               pos++;
+       }
+       *val = pos;
+       return buf;
+}
+
+static int adm_trigger(struct udev *udev, int argc, char *argv[])
 {
        static const struct option options[] = {
                { "verbose", no_argument, NULL, 'v' },
                { "dry-run", no_argument, NULL, 'n' },
                { "type", required_argument, NULL, 't' },
-               { "retry-failed", no_argument, NULL, 'F' },
                { "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' },
+               { "parent-match", required_argument, NULL, 'b' },
                { "help", no_argument, NULL, 'h' },
                {}
        };
@@ -96,7 +112,7 @@ int udevadm_trigger(struct udev *udev, int argc, char *argv[])
                TYPE_SUBSYSTEMS,
                TYPE_FAILED,
        } device_type = TYPE_DEVICES;
-       const char *action = "add";
+       const char *action = "change";
        struct udev_enumerate *udev_enumerate;
        int rc = 0;
 
@@ -107,12 +123,13 @@ int udevadm_trigger(struct udev *udev, int argc, char *argv[])
                goto exit;
        }
 
-       while (1) {
+       for (;;) {
                int option;
-               char attr[UTIL_PATH_SIZE];
-               char *val;
+               const char *key;
+               const char *val;
+               char buf[UTIL_PATH_SIZE];
 
-               option = getopt_long(argc, argv, "vnFo:t:hce::s:S:a:A:", options, NULL);
+               option = getopt_long(argc, argv, "vng:o:t:hc:p:s:S:a:A:y:b:", options, NULL);
                if (option == -1)
                        break;
 
@@ -131,15 +148,11 @@ int udevadm_trigger(struct udev *udev, int argc, char *argv[])
                        } else if (strcmp(optarg, "failed") == 0) {
                                device_type = TYPE_FAILED;
                        } else {
-                               fprintf(stderr, "unknown type --type=%s\n", optarg);
                                err(udev, "unknown type --type=%s\n", optarg);
                                rc = 2;
                                goto exit;
                        }
                        break;
-               case 'F':
-                       device_type = TYPE_FAILED;
-                       break;
                case 'c':
                        action = optarg;
                        break;
@@ -150,46 +163,73 @@ int udevadm_trigger(struct udev *udev, int argc, char *argv[])
                        udev_enumerate_add_nomatch_subsystem(udev_enumerate, optarg);
                        break;
                case 'a':
-                       util_strlcpy(attr, optarg, sizeof(attr));
-                       val = strchr(attr, '=');
-                       if (val != NULL) {
-                               val[0] = 0;
-                               val = &val[1];
-                       }
-                       udev_enumerate_add_match_sysattr(udev_enumerate, attr, val);
+                       key = keyval(optarg, &val, buf, sizeof(buf));
+                       udev_enumerate_add_match_sysattr(udev_enumerate, key, val);
                        break;
                case 'A':
-                       util_strlcpy(attr, optarg, sizeof(attr));
-                       val = strchr(attr, '=');
-                       if (val != NULL) {
-                               val[0] = 0;
-                               val = &val[1];
+                       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': {
+                       char path[UTIL_PATH_SIZE];
+                       struct udev_device *dev;
+
+                       /* add sys dir if needed */
+                       if (strncmp(optarg, udev_get_sys_path(udev), strlen(udev_get_sys_path(udev))) != 0)
+                               util_strscpyl(path, sizeof(path), udev_get_sys_path(udev), optarg, NULL);
+                       else
+                               util_strscpy(path, sizeof(path), optarg);
+                       util_remove_trailing_chars(path, '/');
+                       dev = udev_device_new_from_syspath(udev, path);
+                       if (dev == NULL) {
+                               err(udev, "unable to open the device '%s'\n", optarg);
+                               rc = 2;
+                               goto exit;
                        }
-                       udev_enumerate_add_nomatch_sysattr(udev_enumerate, attr, val);
+                       udev_enumerate_add_match_parent(udev_enumerate, dev);
+                       /* drop reference immediately, enumerate pins the device as long as needed */
+                       udev_device_unref(dev);
                        break;
+               }
                case 'h':
                        printf("Usage: udevadm trigger OPTIONS\n"
                               "  --verbose                       print the list of devices while running\n"
                               "  --dry-run                       do not actually trigger the events\n"
                               "  --type=                         type of events to trigger\n"
-                              "      devices                       sys devices\n"
+                              "      devices                       sys devices (default)\n"
                               "      subsystems                    sys subsystems and drivers\n"
                               "      failed                        trigger only the events which have been\n"
                               "                                    marked as failed during a previous run\n"
-                              "  --subsystem-match=<subsystem>   trigger devices from a matching subystem\n"
-                              "  --subsystem-nomatch=<subsystem> exclude devices from a matching subystem\n"
+                              "  --action=<action>               event action value, default is \"change\"\n"
+                              "  --subsystem-match=<subsystem>   trigger devices from a matching subsystem\n"
+                              "  --subsystem-nomatch=<subsystem> exclude devices from a matching subsystem\n"
                               "  --attr-match=<file[=<value>]>   trigger devices with a matching attribute\n"
                               "  --attr-nomatch=<file[=<value>]> exclude devices with a matching attribute\n"
-                              "  --help                          print this text\n"
-                              "\n");
+                              "  --property-match=<key>=<value>  trigger devices with a matching property\n"
+                              "  --tag-match=<key>=<value>       trigger devices with a matching property\n"
+                              "  --sysname-match=<name>          trigger devices with a matching name\n"
+                              "  --parent-match=<name>           trigger devices with that parent device\n"
+                              "  --help\n\n");
                        goto exit;
                default:
+                       rc = 1;
                        goto exit;
                }
        }
 
        switch (device_type) {
        case TYPE_FAILED:
+               err(udev, "--type=failed is deprecated and will be removed from a future udev release.\n");
                scan_failed(udev_enumerate);
                exec_list(udev_enumerate, action);
                goto exit;
@@ -208,3 +248,9 @@ exit:
        udev_enumerate_unref(udev_enumerate);
        return rc;
 }
+
+const struct udevadm_cmd udevadm_trigger = {
+       .name = "trigger",
+       .cmd = adm_trigger,
+       .help = "request events from the kernel",
+};