rule-generator: net - whitelist NICs that violate MAC local scheme

[elogind.git] / udev / udevadm-monitor.c

diff --git a/udev/udevadm-monitor.c b/udev/udevadm-monitor.c
index d8ec066467e9fbb001d3587b7580e80bc08b1e67..27520f70614f90d25076d0452790d26a2c3777b0 100644 (file)
--- a/udev/udevadm-monitor.c
+++ b/udev/udevadm-monitor.c
@@ -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;
 
@@ -99,11 +102,26 @@ int udevadm_monitor(struct udev *udev, int argc, char *argv[])
                case 'u':
                        print_udev = 1;
                        break;
+               case 's':
+                       {
+                               char subsys[UTIL_NAME_SIZE];
+                               char *devtype;
+
+                               util_strlcpy(subsys, optarg, sizeof(subsys));
+                               devtype = strchr(subsys, ':');
+                               if (devtype != NULL) {
+                                       devtype[0] = '\0';
+                                       devtype++;
+                               }
+                               udev_list_entry_add(udev, &subsystem_match_list, subsys, devtype, 0, 0);
+                               break;
+                       }
                case 'h':
                        printf("Usage: udevadm monitor [--environment] [--kernel] [--udev] [--help]\n"
-                              "  --env    print the whole event environment\n"
-                              "  --kernel print kernel uevents\n"
-                              "  --udev   print udev events\n"
+                              "  --env                         print the whole event environment\n"
+                              "  --kernel                      print kernel uevents\n"
+                              "  --udev                        print udev events\n"
+                              "  --subsystem-match=<subsystem> filter events\n"
                               "  --help\n\n");
                default:
                        goto out;
@@ -125,25 +143,49 @@ 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);
+                       const char *devtype = udev_list_entry_get_value(entry);
+
+                       if (udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, subsys, devtype) < 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;
                        goto out;
                }
                printf("UDEV - the event which udev sends out after rule processing\n");
        }
        if (print_kernel) {
+               struct udev_list_entry *entry;
+
                kernel_monitor = udev_monitor_new_from_netlink(udev, "kernel");
                if (kernel_monitor == NULL) {
-                       fprintf(stderr, "unable to subscribe to kernel events\n");
+                       fprintf(stderr, "error: unable to create netlink socket\n");
                        rc = 3;
                        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_devtype(kernel_monitor, subsys, NULL) < 0)
+                               fprintf(stderr, "error: unable to apply subsystem filter '%s'\n", subsys);
+               }
+
                if (udev_monitor_enable_receiving(kernel_monitor) < 0) {
+                       fprintf(stderr, "error: unable to subscribe to kernel events\n");
                        rc = 4;
                        goto out;
                }
@@ -192,5 +234,6 @@ 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;
 }