udevd: optionally watch device nodes with inotify

[elogind.git] / udev / udev-rules.c

diff --git a/udev/udev-rules.c b/udev/udev-rules.c
index f0b11aa85b9880c3c395b1336f9b0b1dce23ccdf..3751cbb36d55b311d41a19245cdd92205c15a156 100644 (file)
--- a/udev/udev-rules.c
+++ b/udev/udev-rules.c
@@ -140,6 +140,7 @@ enum token_type {
        TK_A_IGNORE_DEVICE,
        TK_A_STRING_ESCAPE_NONE,
        TK_A_STRING_ESCAPE_REPLACE,
+       TK_A_INOTIFY_WATCH,
        TK_A_NUM_FAKE_PART,             /* int */
        TK_A_DEVLINK_PRIO,              /* int */
        TK_A_OWNER,                     /* val */
@@ -270,6 +271,7 @@ static const char *token_str(enum token_type type)
                [TK_A_IGNORE_DEVICE] =          "A IGNORE_DEVICE",
                [TK_A_STRING_ESCAPE_NONE] =     "A STRING_ESCAPE_NONE",
                [TK_A_STRING_ESCAPE_REPLACE] =  "A STRING_ESCAPE_REPLACE",
+               [TK_A_INOTIFY_WATCH] =          "A INOTIFY_WATCH",
                [TK_A_NUM_FAKE_PART] =          "A NUM_FAKE_PART",
                [TK_A_DEVLINK_PRIO] =           "A DEVLINK_PRIO",
                [TK_A_OWNER] =                  "A OWNER",
@@ -352,6 +354,7 @@ static void dump_token(struct udev_rules *rules, struct token *token)
        case TK_A_IGNORE_DEVICE:
        case TK_A_STRING_ESCAPE_NONE:
        case TK_A_STRING_ESCAPE_REPLACE:
+       case TK_A_INOTIFY_WATCH:
        case TK_A_LAST_RULE:
        case TK_A_IGNORE_REMOVE:
                dbg(rules->udev, "%s\n", token_str(type));
@@ -1020,6 +1023,7 @@ static int rule_add_key(struct rule_tmp *rule_tmp, enum token_type type,
        case TK_A_IGNORE_DEVICE:
        case TK_A_STRING_ESCAPE_NONE:
        case TK_A_STRING_ESCAPE_REPLACE:
+       case TK_A_INOTIFY_WATCH:
        case TK_A_IGNORE_REMOVE:
        case TK_A_LAST_RULE:
                break;
@@ -1512,6 +1516,11 @@ static int add_rule(struct udev_rules *rules, char *line,
                                rule_add_key(&rule_tmp, TK_A_NUM_FAKE_PART, 0, NULL, &num);
                                dbg(rules->udev, "creation of partition nodes requested\n");
                        }
+                       pos = strstr(value, "watch");
+                       if (pos != NULL) {
+                               rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, 0, NULL, NULL);
+                               dbg(rules->udev, "inotify watch of device requested\n");
+                       }
                        continue;
                }
                err(rules->udev, "unknown key '%s' in %s:%u\n", key, filename, lineno);
@@ -2244,6 +2253,9 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                                break;
                        udev_device_set_num_fake_partitions(event->dev, cur->key.num_fake_part);
                        break;
+               case TK_A_INOTIFY_WATCH:
+                       event->inotify_watch = 1;
+                       break;
                case TK_A_DEVLINK_PRIO:
                        udev_device_set_devlink_priority(event->dev, cur->key.devlink_prio);
                        break;