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udevadm monitor - add --subsystem-match=

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This commit is contained in:
Kay Sievers 2009-04-22 05:00:15 +02:00
parent 4277453fd2
commit a9550eb11f
1 changed files with 18 additions and 1 deletions
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19
udev/udevadm-monitor.c
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@ -71,6 +71,7 @@ int udevadm_monitor(struct udev *udev, int argc, char *argv[])
int env = 0;
int print_kernel = 0;
int print_udev = 0;
struct udev_list_node subsystem_match_list;
struct udev_monitor *udev_monitor = NULL;
struct udev_monitor *kernel_monitor = NULL;
fd_set readfds;
@ -80,12 +81,14 @@ int udevadm_monitor(struct udev *udev, int argc, char *argv[])
{ "environment", no_argument, NULL, 'e' },
{ "kernel", no_argument, NULL, 'k' },
{ "udev", no_argument, NULL, 'u' },
{ "subsystem-match", required_argument, NULL, 's' },
{ "help", no_argument, NULL, 'h' },
{}
};
udev_list_init(&subsystem_match_list);
while (1) {
option = getopt_long(argc, argv, "ekuh", options, NULL);
option = getopt_long(argc, argv, "ekus:h", options, NULL);
if (option == -1)
break;
@ -99,6 +102,9 @@ int udevadm_monitor(struct udev *udev, int argc, char *argv[])
case 'u':
print_udev = 1;
break;
case 's':
udev_list_entry_add(udev, &subsystem_match_list, optarg, NULL, 1, 0);
break;
case 'h':
printf("Usage: udevadm monitor [--environment] [--kernel] [--udev] [--help]\n"
" --env print the whole event environment\n"
@ -125,12 +131,22 @@ int udevadm_monitor(struct udev *udev, int argc, char *argv[])
printf("monitor will print the received events for:\n");
if (print_udev) {
struct udev_list_entry *entry;
udev_monitor = udev_monitor_new_from_netlink(udev, "udev");
if (udev_monitor == NULL) {
fprintf(stderr, "error: unable to create netlink socket\n");
rc = 1;
goto out;
}
udev_list_entry_foreach(entry, udev_list_get_entry(&subsystem_match_list)) {
const char *subsys = udev_list_entry_get_name(entry);
if (udev_monitor_filter_add_match_subsystem(udev_monitor, subsys) < 0)
fprintf(stderr, "error: unable to apply subsystem filter '%s'\n", subsys);
}
if (udev_monitor_enable_receiving(udev_monitor) < 0) {
fprintf(stderr, "error: unable to subscribe to udev events\n");
rc = 2;
@ -195,5 +211,6 @@ int udevadm_monitor(struct udev *udev, int argc, char *argv[])
out:
udev_monitor_unref(udev_monitor);
udev_monitor_unref(kernel_monitor);
udev_list_cleanup_entries(udev, &subsystem_match_list);
return rc;
}