allow SYMLINK== match

[elogind.git] / udev_rules.c

diff --git a/udev_rules.c b/udev_rules.c
index 400ebad9e33b6841302065576e528feed81707b4..daf3d7fff7992841ab766b10a0339712828dabf2 100644 (file)
--- a/udev_rules.c
+++ b/udev_rules.c
@@ -940,10 +940,25 @@ static int match_rule(struct udevice *udev, struct udev_rule *rule)
        if (match_key("DRIVER", rule, &rule->driver, udev->dev->driver))
                goto nomatch;
 
-       /* match NAME against a value assigned by an earlier rule */
        if (match_key("NAME", rule, &rule->name, udev->name))
                goto nomatch;
 
+       /* match against current list of symlinks */
+       if (rule->symlink_match.operation == KEY_OP_MATCH ||
+           rule->symlink_match.operation == KEY_OP_NOMATCH) {
+               struct name_entry *name_loop;
+               int match = 0;
+
+               list_for_each_entry(name_loop, &udev->symlink_list, node) {
+                       if (match_key("SYMLINK", rule, &rule->symlink_match, name_loop->name) == 0) {
+                               match = 1;
+                               break;
+                       }
+               }
+               if (!match)
+                       goto nomatch;
+       }
+
        for (i = 0; i < rule->env.count; i++) {
                struct key_pair *pair = &rule->env.keys[i];
 
@@ -1250,6 +1265,9 @@ int udev_rules_get_name(struct udev_rules *rules, struct udevice *udev)
        dbg("udev->dev->devpath='%s'", udev->dev->devpath);
        dbg("udev->dev->kernel='%s'", udev->dev->kernel);
 
+       /* use kernel name as default node name */
+       strlcpy(udev->name, udev->dev->kernel, sizeof(udev->name));
+
        /* look for a matching rule to apply */
        udev_rules_iter_init(rules);
        while (1) {
@@ -1311,14 +1329,18 @@ int udev_rules_get_name(struct udev_rules *rules, struct udevice *udev)
                        }
 
                        /* collect symlinks */
-                       if (!udev->symlink_final && rule->symlink.operation != KEY_OP_UNSET) {
+                       if (!udev->symlink_final &&
+                           (rule->symlink.operation == KEY_OP_ASSIGN ||
+                            rule->symlink.operation == KEY_OP_ASSIGN_FINAL ||
+                            rule->symlink.operation == KEY_OP_ADD)) {
                                char temp[PATH_SIZE];
                                char *pos, *next;
                                int count;
 
                                if (rule->symlink.operation == KEY_OP_ASSIGN_FINAL)
                                        udev->symlink_final = 1;
-                               if (rule->symlink.operation == KEY_OP_ASSIGN || rule->symlink.operation == KEY_OP_ASSIGN_FINAL) {
+                               if (rule->symlink.operation == KEY_OP_ASSIGN ||
+                                   rule->symlink.operation == KEY_OP_ASSIGN_FINAL) {
                                        info("reset symlink list");
                                        name_list_cleanup(&udev->symlink_list);
                                }
@@ -1400,10 +1422,8 @@ int udev_rules_get_name(struct udev_rules *rules, struct udevice *udev)
                }
        }
 
-       if (!name_set) {
-               strlcpy(udev->name, udev->dev->kernel, sizeof(udev->name));
+       if (!name_set)
                info("no node name set, will use kernel name '%s'", udev->name);
-       }
 
        if (udev->tmp_node[0] != '\0') {
                dbg("removing temporary device node");