static bool arg_verbose = false;
static bool arg_dry_run = false;
-static int exec_list(sd_device_enumerator *e, const char *action, Set *settle_set) {
+static int exec_list(sd_device_enumerator *e, const char *action, Set **settle_set) {
sd_device *d;
int r, ret = 0;
r = write_string_file(filename, action, WRITE_STRING_FILE_DISABLE_BUFFER);
if (r < 0) {
- log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_ERR, r,
- "Failed to write '%s' to '%s': %m", action, filename);
- if (ret == 0 && r != -ENOENT)
+ bool ignore = IN_SET(r, -ENOENT, -EACCES, -ENODEV, -EROFS);
+
+ log_full_errno(ignore ? LOG_DEBUG : LOG_ERR, r,
+ "Failed to write '%s' to '%s'%s: %m",
+ action, filename, ignore ? ", ignoring" : "");
+ if (r == -EROFS)
+ return 0; /* Read only filesystem. Return earlier. */
+ if (ret == 0 && !ignore)
ret = r;
continue;
}
" -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"
+ " -c --action=ACTION|help 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"
_cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL;
_cleanup_(sd_device_monitor_unrefp) sd_device_monitor *m = NULL;
_cleanup_(sd_event_unrefp) sd_event *event = NULL;
- _cleanup_set_free_free_ Set *settle_set = NULL;
+ _cleanup_set_free_ Set *settle_set = NULL;
usec_t ping_timeout_usec = 5 * USEC_PER_SEC;
bool settle = false, ping = false;
int c, r;
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unknown type --type=%s", optarg);
break;
case 'c':
+ if (streq(optarg, "help")) {
+ dump_device_action_table();
+ return 0;
+ }
if (device_action_from_string(optarg) < 0)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unknown action '%s'", optarg);
}
if (settle) {
- settle_set = set_new(&string_hash_ops);
+ settle_set = set_new(&string_hash_ops_free);
if (!settle_set)
return log_oom();
default:
assert_not_reached("Unknown device type");
}
- r = exec_list(e, action, settle_set);
+
+ r = exec_list(e, action, settle ? &settle_set : NULL);
if (r < 0)
return r;