From 00f98bd2b3cc8205ec70e2b1a6fc2132dba3d9ba Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Sat, 1 Nov 2008 19:12:20 +0100
Subject: [PATCH] skip entire rule containing device naming keys, if no device
 can be named

If rules set NAME, SYMLINK, OWNER, GROUP, MODE, events without a device node
and remove events will skip the entire rule. The old parser did the same.
---
 TODO              |  1 +
 udev/udev-rules.c | 19 +++++++++++++++++--
 udev/udevd.c      |  1 -
 3 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/TODO b/TODO
index a8d3fc051..ac0618ec1 100644
--- a/TODO
+++ b/TODO
@@ -1,4 +1,5 @@
 
+  o drop pnp shell script, acpi will take care of loading pnp modules
   o add DVB variables to kernel (patch sent), and drop shell script rule
   o DEVTYPE for disks is set by the kernel, they will be removed from
     the default rules
diff --git a/udev/udev-rules.c b/udev/udev-rules.c
index b5fe2f468..d1c02e920 100644
--- a/udev/udev-rules.c
+++ b/udev/udev-rules.c
@@ -877,11 +877,12 @@ static void dump_token(struct udev_rules *rules, struct token *token)
 			const char *tk_ptr = (char *)token;
 			unsigned int off = tk_ptr - tks_ptr;
 
-			dbg(rules->udev, "* RULE %s:%u, off: %u(%u), next: %u, label: '%s'\n",
+			dbg(rules->udev, "* RULE %s:%u, off: %u(%u), next: %u, label: '%s', flags: 0x%02x\n",
 			    &rules->buf[token->rule.filename_off], token->rule.filename_line,
 			    off / (unsigned int) sizeof(struct token), off,
 			    token->rule.next_rule,
-			    &rules->buf[token->rule.label_off]);
+			    &rules->buf[token->rule.label_off],
+			    token->rule.flags);
 			break;
 		}
 	case TK_M_ACTION:
@@ -1316,6 +1317,7 @@ static int add_rule(struct udev_rules *rules, char *line,
 					}
 				}
 			}
+			rule_tmp.rule.rule.flags = 1;
 			continue;
 		}
 
@@ -1324,6 +1326,7 @@ static int add_rule(struct udev_rules *rules, char *line,
 				rule_add_key(&rule_tmp, TK_M_DEVLINK, op, value, NULL);
 			else
 				rule_add_key(&rule_tmp, TK_A_DEVLINK, op, value, NULL);
+			rule_tmp.rule.rule.flags = 1;
 			valid = 1;
 			continue;
 		}
@@ -1341,6 +1344,7 @@ static int add_rule(struct udev_rules *rules, char *line,
 			} else {
 				rule_add_key(&rule_tmp, TK_A_OWNER, op, value, NULL);
 			}
+			rule_tmp.rule.rule.flags = 1;
 			valid = 1;
 			continue;
 		}
@@ -1358,6 +1362,7 @@ static int add_rule(struct udev_rules *rules, char *line,
 			} else {
 				rule_add_key(&rule_tmp, TK_A_GROUP, op, value, NULL);
 			}
+			rule_tmp.rule.rule.flags = 1;
 			valid = 1;
 			continue;
 		}
@@ -1371,6 +1376,7 @@ static int add_rule(struct udev_rules *rules, char *line,
 				rule_add_key(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode);
 			else
 				rule_add_key(&rule_tmp, TK_A_MODE, op, value, NULL);
+			rule_tmp.rule.rule.flags = 1;
 			valid = 1;
 			continue;
 		}
@@ -1856,10 +1862,16 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
 	struct token *cur;
 	struct token *rule;
 	enum escape_type esc = ESCAPE_UNSET;
+	int can_set_name;
 
 	if (rules->tokens == NULL)
 		return -1;
 
+	can_set_name = ((strcmp(udev_device_get_action(event->dev), "add") == 0 ||
+			 strcmp(udev_device_get_action(event->dev), "change") == 0) &&
+			(major(udev_device_get_devnum(event->dev)) > 0 ||
+			 strcmp(udev_device_get_subsystem(event->dev), "net") == 0));
+
 	/* loop through token list, match, run actions or forward to next rule */
 	cur = &rules->tokens[0];
 	rule = cur;
@@ -1871,6 +1883,9 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
 		case TK_RULE:
 			/* current rule */
 			rule = cur;
+			/* possibly skip rules which want to set NAME, SYMLINK, OWNER, GROUP, MODE */
+			if (!can_set_name && rule->rule.flags)
+				;//goto nomatch;
 			esc = ESCAPE_UNSET;
 			break;
 		case TK_M_ACTION:
diff --git a/udev/udevd.c b/udev/udevd.c
index 9096f9505..405a1ed90 100644
--- a/udev/udevd.c
+++ b/udev/udevd.c
@@ -430,7 +430,6 @@ static void event_queue_manager(struct udev *udev)
 			continue;
 		}
 
-		/* do dendencies, start event */
 		event_fork(loop_event);
 		dbg(udev, "moved seq %llu to running list\n", udev_device_get_seqnum(loop_event->dev));
 	}
-- 
2.30.2