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Diffstat (limited to 'src/udev/udevadm-trigger.c')
-rw-r--r--src/udev/udevadm-trigger.c115
1 files changed, 69 insertions, 46 deletions
diff --git a/src/udev/udevadm-trigger.c b/src/udev/udevadm-trigger.c
index a52d1b5ad5..4dc756a28b 100644
--- a/src/udev/udevadm-trigger.c
+++ b/src/udev/udevadm-trigger.c
@@ -32,6 +32,7 @@
#include "udev.h"
#include "udev-util.h"
+#include "udevadm-util.h"
#include "util.h"
static int verbose;
@@ -53,7 +54,7 @@ static void exec_list(struct udev_enumerate *udev_enumerate, const char *action)
if (fd < 0)
continue;
if (write(fd, action, strlen(action)) < 0)
- log_debug("error writing '%s' to '%s': %m", action, filename);
+ log_debug_errno(errno, "error writing '%s' to '%s': %m", action, filename);
close(fd);
}
}
@@ -72,39 +73,48 @@ static const char *keyval(const char *str, const char **val, char *buf, size_t s
}
static void help(void) {
- printf("Usage: udevadm trigger OPTIONS\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 sys devices (default)\n"
- " subsystems sys 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 a matching name\n"
- " -b,--parent-match=<name> trigger devices with that parent device\n"
- " -h,--help\n\n");
+ 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' },
- { "parent-match", required_argument, NULL, 'b' },
- { "help", no_argument, NULL, 'h' },
+ { "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 {
@@ -174,25 +184,31 @@ static int adm_trigger(struct udev *udev, int argc, char *argv[]) {
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 (!startswith(optarg, "/sys"))
- strscpyl(path, sizeof(path), "/sys", optarg, NULL);
- else
- strscpy(path, sizeof(path), optarg);
- util_remove_trailing_chars(path, '/');
- dev = udev_device_new_from_syspath(udev, path);
+ _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);
- /* drop reference immediately, enumerate pins the device as long as needed */
- udev_device_unref(dev);
break;
}
+
case 'h':
help();
return 0;
@@ -203,9 +219,16 @@ static int adm_trigger(struct udev *udev, int argc, char *argv[]) {
}
}
- if (optind < argc) {
- fprintf(stderr, "Extraneous argument: '%s'\n", argv[optind]);
- return 1;
+ 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) {
@@ -225,5 +248,5 @@ static int adm_trigger(struct udev *udev, int argc, char *argv[]) {
const struct udevadm_cmd udevadm_trigger = {
.name = "trigger",
.cmd = adm_trigger,
- .help = "request events from the kernel",
+ .help = "Request events from the kernel",
};
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2025-02-08 16:18:48 +0000