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Diffstat (limited to 'fs/ext4/namei.c')
-rw-r--r--fs/ext4/namei.c23
1 files changed, 13 insertions, 10 deletions
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index d252935f9c..05b647e6bc 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -2388,8 +2388,6 @@ static int ext4_add_entry(handle_t *handle, struct dentry *dentry,
sb = dir->i_sb;
blocksize = sb->s_blocksize;
- if (!dentry->d_name.len)
- return -EINVAL;
if (fscrypt_is_nokey_name(dentry))
return -ENOKEY;
@@ -3591,10 +3589,14 @@ struct ext4_renament {
int dir_inlined;
};
-static int ext4_rename_dir_prepare(handle_t *handle, struct ext4_renament *ent)
+static int ext4_rename_dir_prepare(handle_t *handle, struct ext4_renament *ent, bool is_cross)
{
int retval;
+ ent->is_dir = true;
+ if (!is_cross)
+ return 0;
+
ent->dir_bh = ext4_get_first_dir_block(handle, ent->inode,
&retval, &ent->parent_de,
&ent->dir_inlined);
@@ -3612,6 +3614,9 @@ static int ext4_rename_dir_finish(handle_t *handle, struct ext4_renament *ent,
{
int retval;
+ if (!ent->dir_bh)
+ return 0;
+
ent->parent_de->inode = cpu_to_le32(dir_ino);
BUFFER_TRACE(ent->dir_bh, "call ext4_handle_dirty_metadata");
if (!ent->dir_inlined) {
@@ -3900,7 +3905,7 @@ static int ext4_rename(struct mnt_idmap *idmap, struct inode *old_dir,
if (new.dir != old.dir && EXT4_DIR_LINK_MAX(new.dir))
goto end_rename;
}
- retval = ext4_rename_dir_prepare(handle, &old);
+ retval = ext4_rename_dir_prepare(handle, &old, new.dir != old.dir);
if (retval)
goto end_rename;
}
@@ -3964,7 +3969,7 @@ static int ext4_rename(struct mnt_idmap *idmap, struct inode *old_dir,
}
inode_set_mtime_to_ts(old.dir, inode_set_ctime_current(old.dir));
ext4_update_dx_flag(old.dir);
- if (old.dir_bh) {
+ if (old.is_dir) {
retval = ext4_rename_dir_finish(handle, &old, new.dir->i_ino);
if (retval)
goto end_rename;
@@ -3987,7 +3992,7 @@ static int ext4_rename(struct mnt_idmap *idmap, struct inode *old_dir,
if (unlikely(retval))
goto end_rename;
- if (S_ISDIR(old.inode->i_mode)) {
+ if (old.is_dir) {
/*
* We disable fast commits here that's because the
* replay code is not yet capable of changing dot dot
@@ -4114,14 +4119,12 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
ext4_handle_sync(handle);
if (S_ISDIR(old.inode->i_mode)) {
- old.is_dir = true;
- retval = ext4_rename_dir_prepare(handle, &old);
+ retval = ext4_rename_dir_prepare(handle, &old, new.dir != old.dir);
if (retval)
goto end_rename;
}
if (S_ISDIR(new.inode->i_mode)) {
- new.is_dir = true;
- retval = ext4_rename_dir_prepare(handle, &new);
+ retval = ext4_rename_dir_prepare(handle, &new, new.dir != old.dir);
if (retval)
goto end_rename;
}