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-rw-r--r--init/do_mounts.c35
1 files changed, 22 insertions, 13 deletions
diff --git a/init/do_mounts.c b/init/do_mounts.c
index b28ec5819325..c950d7c93f98 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -119,27 +119,29 @@ static dev_t devt_from_partuuid(const char *uuid_str)
struct gendisk *disk;
struct hd_struct *part;
int offset = 0;
-
- if (strlen(uuid_str) < 36)
- goto done;
+ bool clear_root_wait = false;
+ char *slash;
cmp.uuid = uuid_str;
- cmp.len = 36;
+ slash = strchr(uuid_str, '/');
/* Check for optional partition number offset attributes. */
- if (uuid_str[36]) {
+ if (slash) {
char c = 0;
/* Explicitly fail on poor PARTUUID syntax. */
- if (sscanf(&uuid_str[36],
- "/PARTNROFF=%d%c", &offset, &c) != 1) {
- printk(KERN_ERR "VFS: PARTUUID= is invalid.\n"
- "Expected PARTUUID=<valid-uuid-id>[/PARTNROFF=%%d]\n");
- if (root_wait)
- printk(KERN_ERR
- "Disabling rootwait; root= is invalid.\n");
- root_wait = 0;
+ if (sscanf(slash + 1,
+ "PARTNROFF=%d%c", &offset, &c) != 1) {
+ clear_root_wait = true;
goto done;
}
+ cmp.len = slash - uuid_str;
+ } else {
+ cmp.len = strlen(uuid_str);
+ }
+
+ if (!cmp.len) {
+ clear_root_wait = true;
+ goto done;
}
dev = class_find_device(&block_class, NULL, &cmp,
@@ -164,6 +166,13 @@ static dev_t devt_from_partuuid(const char *uuid_str)
no_offset:
put_device(dev);
done:
+ if (clear_root_wait) {
+ pr_err("VFS: PARTUUID= is invalid.\n"
+ "Expected PARTUUID=<valid-uuid-id>[/PARTNROFF=%%d]\n");
+ if (root_wait)
+ pr_err("Disabling rootwait; root= is invalid.\n");
+ root_wait = 0;
+ }
return res;
}
#endif