X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fudev%2Fudevadm-trigger.c;h=4dc756a28b55f522303082b33ac8d00ba5a64228;hb=6cb8e687f038424ef54b5c5c3c433be974fbe371;hp=a52d1b5ad5072120cad792274d3448ef0d46cf29;hpb=5168f84a29b9f0002c9d44133cc9830046bb0619;p=elogind.git diff --git a/src/udev/udevadm-trigger.c b/src/udev/udevadm-trigger.c index a52d1b5ad..4dc756a28 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= event action value, default is \"change\"\n" - " -s,--subsystem-match= trigger devices from a matching subsystem\n" - " -S,--subsystem-nomatch= exclude devices from a matching subsystem\n" - " -a,--attr-match=]> trigger devices with a matching attribute\n" - " -A,--attr-nomatch=]> exclude devices with a matching attribute\n" - " -p,--property-match== trigger devices with a matching property\n" - " -g,--tag-match== trigger devices with a matching property\n" - " -y,--sysname-match= trigger devices with a matching name\n" - " -b,--parent-match= 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", };