fs/squashfs: Fix index off by 1 for inode SQFS_LDIR_TYPE

I've created a squashfs file system with Yocto (it use squashfs-tools)
and u-boot command sqfsls give the error:'Error while searching inode:
unknown type.'
After some digging in the code I found that the index is off by 1.
This patch fix this issue and I can successful use the sqfsls command.
After search for the squashfs format I found a link talk about a
similar issue but this time in the documentation. The link is:
https://github.com/AgentD/squashfs-tools-ng/commit/e6588526838caece9529

Signed-off-by: Gerard Koskamp <gerard.koskamp@nedap.com>
Tested-by: Joao Marcos Costa <joaomarcos.costa@bootlin.com>
[jh80.chung: cherry picked from mainline commit c49b0eb034710f08fc68cbfa2c23811e10667ad9]
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Change-Id: I02ba72c07ea7c57ebace7103357e2b81bcf48772

diff --git a/fs/squashfs/sqfs_inode.c b/fs/squashfs/sqfs_inode.c
index 14d70cf6789d9f6974f4c1a12dd62f0d2157a70e..e76ec7cbdfd97d4b9c155a3666ad4d28273417c3 100644 (file)
--- a/fs/squashfs/sqfs_inode.c
+++ b/fs/squashfs/sqfs_inode.c
@@ -49,7 +49,7 @@ int sqfs_inode_size(struct squashfs_base_inode *inode, u32 blk_size)
                        return sizeof(*ldir);
 
                di = ldir->index;
-               while (l < i_count + 1) {
+               while (l < i_count) {
                        sz = get_unaligned_le32(&di->size) + 1;
                        index_list_size += sz;
                        di = (void *)di + sizeof(*di) + sz;
@@ -57,7 +57,7 @@ int sqfs_inode_size(struct squashfs_base_inode *inode, u32 blk_size)
                }
 
                return sizeof(*ldir) + index_list_size +
-                       (i_count + 1) * SQFS_DIR_INDEX_BASE_LENGTH;
+                       i_count * SQFS_DIR_INDEX_BASE_LENGTH;
        }
 
        case SQFS_LREG_TYPE: {