From 2dbb47f8606d18b14e981fb5cf245e8aaaad2de1 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Fri, 16 Mar 2007 15:16:08 +0100
Subject: [PATCH] add link_priority to rule options, and store it in database

---
 udev.h             | 1 +
 udev_db.c          | 9 +++++++++
 udev_rules.c       | 4 ++++
 udev_rules.h       | 1 +
 udev_rules_parse.c | 7 +++++++
 5 files changed, 22 insertions(+)

diff --git a/udev.h b/udev.h
index 7fc7fd3b..31542243 100644
--- a/udev.h
+++ b/udev.h
@@ -86,6 +86,7 @@ struct udevice {
 	int ignore_device;
 	int ignore_remove;
 	char program_result[PATH_SIZE];
+	int link_priority;
 	int test_run;
 };
 
diff --git a/udev_db.c b/udev_db.c
index 13d96894..5ac016a0 100644
--- a/udev_db.c
+++ b/udev_db.c
@@ -118,6 +118,8 @@ int udev_db_add_device(struct udevice *udev)
 			name_index(udev->dev->devpath, name_loop->name, 1);
 		}
 		fprintf(f, "M:%u:%u\n", major(udev->devt), minor(udev->devt));
+		if (udev->link_priority)
+			fprintf(f, "L:%u\n", udev->link_priority);
 		if (udev->partitions)
 			fprintf(f, "A:%u\n", udev->partitions);
 		if (udev->ignore_remove)
@@ -198,6 +200,13 @@ int udev_db_get_device(struct udevice *udev, const char *devpath)
 			line[count-2] = '\0';
 			name_list_add(&udev->symlink_list, line, 0);
 			break;
+		case 'L':
+			if (count > sizeof(line))
+				count =  sizeof(line);
+			memcpy(line, &bufline[2], count-2);
+			line[count-2] = '\0';
+			udev->link_priority = atoi(line);
+			break;
 		case 'A':
 			if (count > sizeof(line))
 				count =  sizeof(line);
diff --git a/udev_rules.c b/udev_rules.c
index 7ab3bba7..c0f4cd20 100644
--- a/udev_rules.c
+++ b/udev_rules.c
@@ -909,6 +909,10 @@ int udev_rules_get_name(struct udev_rules *rules, struct udevice *udev)
 				udev->ignore_remove = 1;
 				dbg("remove event should be ignored");
 			}
+			if (rule->link_priority) {
+				udev->link_priority = rule->link_priority;
+				info("link_priority=%i", udev->link_priority);
+			}
 			/* apply all_partitions option only at a main block device */
 			if (rule->partitions &&
 			    strcmp(udev->dev->subsystem, "block") == 0 && udev->dev->kernel_number[0] == '\0') {
diff --git a/udev_rules.h b/udev_rules.h
index 56153519..7fbf88ba 100644
--- a/udev_rules.h
+++ b/udev_rules.h
@@ -87,6 +87,7 @@ struct udev_rule {
 	mode_t mode;
 	enum key_operation mode_operation;
 
+	unsigned int link_priority;
 	unsigned int partitions;
 	unsigned int last_rule:1,
 		     ignore_device:1,
diff --git a/udev_rules_parse.c b/udev_rules_parse.c
index 5ce91df3..bfbad367 100644
--- a/udev_rules_parse.c
+++ b/udev_rules_parse.c
@@ -555,6 +555,8 @@ static int add_to_rules(struct udev_rules *rules, char *line, const char *filena
 		}
 
 		if (strcasecmp(key, "OPTIONS") == 0) {
+			const char *pos;
+
 			if (strstr(value, "last_rule") != NULL) {
 				dbg("last rule to be applied");
 				rule->last_rule = 1;
@@ -567,6 +569,11 @@ static int add_to_rules(struct udev_rules *rules, char *line, const char *filena
 				dbg("remove event should be ignored");
 				rule->ignore_remove = 1;
 			}
+			pos = strstr(value, "link_priority=");
+			if (pos != NULL) {
+				rule->link_priority = atoi(&pos[strlen("link_priority=")]);
+				info("link priority=%i", rule->link_priority);
+			}
 			if (strstr(value, "all_partitions") != NULL) {
 				dbg("creation of partition nodes requested");
 				rule->partitions = DEFAULT_PARTITIONS_COUNT;
-- 
2.39.5