diff options
| author |   Miklos Szeredi <mszeredi@suse.cz> | 2014-07-23 15:15:36 +0200 |
|---|---|---|
| committer |   Al Viro <viro@zeniv.linux.org.uk> | 2014-08-07 14:40:09 -0400 |
| commit | 7c33d5972ce382bcc506d16235f1e9b7d22cbef8 (patch) | |
| tree | 6c14b1457b9dfa34d6798c67f1b7031fdcf9ff76 | |
| parent | hostfs: support rename flags (diff) | |
| download | linux-dev-7c33d5972ce382bcc506d16235f1e9b7d22cbef8.tar.xz linux-dev-7c33d5972ce382bcc506d16235f1e9b7d22cbef8.zip | |
cifs: support RENAME_NOREPLACE
This flag gives CIFS the ability to support its native rename semantics.
Implementation is simple: just bail out before trying to hack around the
noreplace semantics.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Cc: Steve French <smfrench@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/cifs/cifsfs.c | 2 | ||||
| -rw-r--r-- | fs/cifs/cifsfs.h | 4 | ||||
| -rw-r--r-- | fs/cifs/inode.c | 14 |
3 files changed, 15 insertions, 5 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 888398067420..ac4f260155c8 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -848,7 +848,7 @@ const struct inode_operations cifs_dir_inode_ops = { .link = cifs_hardlink, .mkdir = cifs_mkdir, .rmdir = cifs_rmdir, - .rename = cifs_rename, + .rename2 = cifs_rename2, .permission = cifs_permission, /* revalidate:cifs_revalidate, */ .setattr = cifs_setattr, diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h index 70f178a7c759..ed58c88f5f5d 100644 --- a/fs/cifs/cifsfs.h +++ b/fs/cifs/cifsfs.h @@ -68,8 +68,8 @@ extern int cifs_hardlink(struct dentry *, struct inode *, struct dentry *); extern int cifs_mknod(struct inode *, struct dentry *, umode_t, dev_t); extern int cifs_mkdir(struct inode *, struct dentry *, umode_t); extern int cifs_rmdir(struct inode *, struct dentry *); -extern int cifs_rename(struct inode *, struct dentry *, struct inode *, - struct dentry *); +extern int cifs_rename2(struct inode *, struct dentry *, struct inode *, + struct dentry *, unsigned int); extern int cifs_revalidate_file_attr(struct file *filp); extern int cifs_revalidate_dentry_attr(struct dentry *); extern int cifs_revalidate_file(struct file *filp); diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index a174605f6afa..bec0a0831be6 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -1627,8 +1627,9 @@ do_rename_exit: } int -cifs_rename(struct inode *source_dir, struct dentry *source_dentry, - struct inode *target_dir, struct dentry *target_dentry) +cifs_rename2(struct inode *source_dir, struct dentry *source_dentry, + struct inode *target_dir, struct dentry *target_dentry, + unsigned int flags) { char *from_name = NULL; char *to_name = NULL; @@ -1640,6 +1641,9 @@ cifs_rename(struct inode *source_dir, struct dentry *source_dentry, unsigned int xid; int rc, tmprc; + if (flags & ~RENAME_NOREPLACE) + return -EINVAL; + cifs_sb = CIFS_SB(source_dir->i_sb); tlink = cifs_sb_tlink(cifs_sb); if (IS_ERR(tlink)) @@ -1667,6 +1671,12 @@ cifs_rename(struct inode *source_dir, struct dentry *source_dentry, rc = cifs_do_rename(xid, source_dentry, from_name, target_dentry, to_name); + /* + * No-replace is the natural behavior for CIFS, so skip unlink hacks. + */ + if (flags & RENAME_NOREPLACE) + goto cifs_rename_exit; + if (rc == -EEXIST && tcon->unix_ext) { /* * Are src and dst hardlinks of same inode? We can only tell |