ubifs: Fix directory size calculation for symlinks

We have to account the name of the symlink and not the target length.

Fixes: ca7f85be8d6c ("ubifs: Add support for encrypted symlinks")
Cc: <stable@vger.kernel.org>
Signed-off-by: Richard Weinberger <richard@nod.at>

1 files changed, 3 insertions, 2 deletions

diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index 9da224d4f2da..e8616040bffc 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -1123,8 +1123,7 @@ static int ubifs_symlink(struct inode *dir, struct dentry *dentry,
         struct ubifs_inode *ui;
         struct ubifs_inode *dir_ui = ubifs_inode(dir);
         struct ubifs_info *c = dir->i_sb->s_fs_info;
-        int err, len = strlen(symname);
-        int sz_change = CALC_DENT_SIZE(len);
+        int err, sz_change, len = strlen(symname);
         struct fscrypt_str disk_link;
         struct ubifs_budget_req req = { .new_ino = 1, .new_dent = 1,
                                         .new_ino_d = ALIGN(len, 8),
@@ -1151,6 +1150,8 @@ static int ubifs_symlink(struct inode *dir, struct dentry *dentry,
         if (err)
                 goto out_budg;
 
+        sz_change = CALC_DENT_SIZE(fname_len(&nm));
+
         inode = ubifs_new_inode(c, dir, S_IFLNK | S_IRWXUGO);
         if (IS_ERR(inode)) {
                 err = PTR_ERR(inode);