[PATCH] allow unlimitied count of symlinks

1 files changed, 59 insertions, 36 deletions

diff --git a/udev_db.c b/udev_db.c
index a423247d6b..1015d21221 100644
--- a/udev_db.c
+++ b/udev_db.c
@@ -60,6 +60,7 @@ static int get_db_filename(const char *devpath, char *filename, int len)
 int udev_db_add_device(struct udevice *udev)
 {
 	char filename[SYSFS_PATH_MAX];
+	struct name_entry *name_loop;
 	FILE *f;
 
 	if (udev->test_run)
@@ -78,7 +79,8 @@ int udev_db_add_device(struct udevice *udev)
 
 	fprintf(f, "P:%s\n", udev->devpath);
 	fprintf(f, "N:%s\n", udev->name);
-	fprintf(f, "S:%s\n", udev->symlink);
+	list_for_each_entry(name_loop, &udev->symlink_list, node)
+		fprintf(f, "S:%s\n", name_loop->name);
 	fprintf(f, "M:%u:%u\n", major(udev->devt), minor(udev->devt));
 	fprintf(f, "A:%u\n", udev->partitions);
 	fprintf(f, "R:%u\n", udev->ignore_remove);
@@ -134,8 +136,9 @@ static int parse_db_file(struct udevice *udev, const char *filename)
 		case 'S':
 			if (count > NAME_SIZE)
 				count = NAME_SIZE-1;
-			strncpy(udev->symlink, &bufline[2], count-2);
-			udev->symlink[count-2] = '\0';
+			strncpy(temp, &bufline[2], count-2);
+			temp[count-2] = '\0';
+			name_list_add(&udev->symlink_list, temp, 0);
 			break;
 		case 'A':
 			if (count > NAME_SIZE)
@@ -171,21 +174,23 @@ int udev_db_delete_device(struct udevice *udev)
 	return 0;
 }
 
-int udev_db_get_device_by_devpath(struct udevice *udev, const char *devpath)
+int udev_db_get_device(struct udevice *udev, const char *devpath)
 {
 	char filename[SYSFS_PATH_MAX];
 
 	get_db_filename(devpath, filename, SYSFS_PATH_MAX);
 
-	return parse_db_file(udev, filename);
+	if (parse_db_file(udev, filename) != 0)
+		return -1;
+
+	return 0;
 }
 
-int udev_db_get_device_by_name(struct udevice *udev, const char *name)
+int udev_db_search_name(char *devpath, size_t len, const char *name)
 {
 	struct dirent *ent;
 	DIR *dir;
 	char filename[NAME_SIZE];
-	struct udevice db_udev;
 
 	dir = opendir(udev_db_path);
 	if (dir == NULL) {
@@ -194,6 +199,14 @@ int udev_db_get_device_by_name(struct udevice *udev, const char *name)
 	}
 
 	while (1) {
+		char path[DEVPATH_SIZE];
+		char nodename[NAME_SIZE];
+		char *bufline;
+		char *buf;
+		size_t bufsize;
+		size_t cur;
+		size_t count;
+
 		ent = readdir(dir);
 		if (ent == NULL || ent->d_name[0] == '\0')
 			break;
@@ -203,42 +216,50 @@ int udev_db_get_device_by_name(struct udevice *udev, const char *name)
 
 		snprintf(filename, NAME_SIZE, "%s/%s", udev_db_path, ent->d_name);
 		filename[NAME_SIZE-1] = '\0';
+		dbg("looking at '%s'", filename);
 
-		memset(&db_udev, 0x00, sizeof(struct udevice));
-		if (parse_db_file(&db_udev, filename) == 0) {
-			char *pos;
-			unsigned int len;
-
-			if (strncmp(name, db_udev.name, NAME_SIZE) == 0) {
-				goto found;
-			}
-
-			foreach_strpart(db_udev.symlink, " ", pos, len) {
-				if (strncmp(name, pos, len) != 0)
-					continue;
+		if (file_map(filename, &buf, &bufsize) != 0) {
+			dbg("unable to read db file '%s'", filename);
+			continue;
+		}
 
-				if (len == strlen(name))
-					goto found;
+		cur = 0;
+		while (cur < bufsize) {
+			count = buf_get_line(buf, bufsize, cur);
+			bufline = &buf[cur];
+			cur += count+1;
+
+			switch(bufline[0]) {
+			case 'P':
+				if (count > DEVPATH_SIZE)
+					count = DEVPATH_SIZE-1;
+				strncpy(path, &bufline[2], count-2);
+				path[count-2] = '\0';
+				break;
+			case 'N':
+			case 'S':
+				if (count > NAME_SIZE)
+				count = NAME_SIZE-1;
+				strncpy(nodename, &bufline[2], count-2);
+				nodename[count-2] = '\0';
+				dbg("compare '%s' '%s'", nodename, name);
+				if (strcmp(nodename, name) == 0) {
+					strncpy(devpath, path, len);
+					devpath[len] = '\0';
+					file_unmap(buf, bufsize);
+					closedir(dir);
+					return 0;
+				}
+				break;
+			default:
+				continue;
 			}
-
 		}
+		file_unmap(buf, bufsize);
 	}
 
 	closedir(dir);
-
 	return -1;
-
-found:
-	closedir(dir);
-
-	strfieldcpy(udev->devpath, db_udev.devpath);
-	strfieldcpy(udev->name, db_udev.name);
-	strfieldcpy(udev->symlink, db_udev.symlink);
-	udev->partitions = db_udev.partitions;
-	udev->ignore_remove = db_udev.ignore_remove;
-	udev->devt = db_udev.devt;
-
-	return 0;
 }
 
 int udev_db_call_foreach(int (*handler_function)(struct udevice *udev))
@@ -265,7 +286,9 @@ int udev_db_call_foreach(int (*handler_function)(struct udevice *udev))
 		snprintf(filename, NAME_SIZE, "%s/%s", udev_db_path, ent->d_name);
 		filename[NAME_SIZE-1] = '\0';
 
-		memset(&db_udev, 0x00, sizeof(struct udevice));
+		dbg("found '%s'", filename);
+
+		udev_init_device(&db_udev, NULL, NULL);
 		if (parse_db_file(&db_udev, filename) == 0) {
 			if (handler_function(&db_udev) != 0)
 				break;