Safety guard in the U-Boot filesystem glue code, because these functions
are called from different parts of the codebase. For generic filesystem
handling this should have been checked in blk_get_device_part_str()
already. Commands from cmd/ubifs.c should also check this before
calling those functions, but you never know?!
Signed-off-by: Alexander Dahl <a...@thorsis.com>
---
fs/ubifs/ubifs.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/fs/ubifs/ubifs.c b/fs/ubifs/ubifs.c
index 506e29958c3..9722cc440ab 100644
--- a/fs/ubifs/ubifs.c
+++ b/fs/ubifs/ubifs.c
@@ -573,6 +573,11 @@ int ubifs_ls(const char *filename)
unsigned long inum;
int ret = 0;
+ if (!ubifs_is_mounted()) {
+ debug("UBIFS not mounted, use ubifsmount to mount volume
first!\n");
+ return -1;
+ }
+
inum = ubifs_findfile(ubifs_sb, (char *)filename);
if (!inum) {
ret = -1;
@@ -613,6 +618,11 @@ int ubifs_exists(const char *filename)
{
unsigned long inum;
+ if (!ubifs_is_mounted()) {
+ debug("UBIFS not mounted, use ubifsmount to mount volume
first!\n");
+ return -1;
+ }
+
inum = ubifs_findfile(ubifs_sb, (char *)filename);
return inum != 0;
@@ -624,6 +634,11 @@ int ubifs_size(const char *filename, loff_t *size)
struct inode *inode;
int err = 0;
+ if (!ubifs_is_mounted()) {
+ debug("UBIFS not mounted, use ubifsmount to mount volume
first!\n");
+ return -1;
+ }
+
inum = ubifs_findfile(ubifs_sb, (char *)filename);
if (!inum) {
err = -1;
@@ -827,6 +842,11 @@ int ubifs_read(const char *filename, void *buf, loff_t
offset,
int count;
int last_block_size = 0;
+ if (!ubifs_is_mounted()) {
+ debug("UBIFS not mounted, use ubifsmount to mount volume
first!\n");
+ return -1;
+ }
+
*actread = 0;
if (offset & (PAGE_SIZE - 1)) {
--
2.39.2
