diff options
| author |   Miklos Szeredi <mszeredi@redhat.com> | 2016-09-27 11:03:58 +0200 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2016-09-27 11:03:58 +0200 |
| commit | 1cd66c93ba8cdb873258f58ae6a817b28a02bcc3 (patch) | |
| tree | f9a1f49b000c9959c5b278eae175b996ade3a7cd /fs/kernfs | |
| parent | libfs: support RENAME_NOREPLACE in simple_rename() (diff) | |
| download | linux-dev-1cd66c93ba8cdb873258f58ae6a817b28a02bcc3.tar.xz linux-dev-1cd66c93ba8cdb873258f58ae6a817b28a02bcc3.zip | |
fs: make remaining filesystems use .rename2
This is trivial to do:
- add flags argument to foo_rename()
- check if flags is zero
- assign foo_rename() to .rename2 instead of .rename
This doesn't mean it's impossible to support RENAME_NOREPLACE for these
filesystems, but it is not trivial, like for local filesystems.
RENAME_NOREPLACE must guarantee atomicity (i.e. it shouldn't be possible
for a file to be created on one host while it is overwritten by rename on
another host).
Filesystems converted:
9p, afs, ceph, coda, ecryptfs, kernfs, lustre, ncpfs, nfs, ocfs2, orangefs.
After this, we can get rid of the duplicate interfaces for rename.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: David Howells <dhowells@redhat.com> [AFS]
Acked-by: Mike Marshall <hubcap@omnibond.com>
Cc: Eric Van Hensbergen <ericvh@gmail.com>
Cc: Ilya Dryomov <idryomov@gmail.com>
Cc: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Tyler Hicks <tyhicks@canonical.com>
Cc: Oleg Drokin <oleg.drokin@intel.com>
Cc: Trond Myklebust <trond.myklebust@primarydata.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/kernfs')
| -rw-r--r-- | fs/kernfs/dir.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c index e57174d43683..c7e23ca945ab 100644 --- a/fs/kernfs/dir.c +++ b/fs/kernfs/dir.c @@ -1096,13 +1096,17 @@ static int kernfs_iop_rmdir(struct inode *dir, struct dentry *dentry) } static int kernfs_iop_rename(struct inode *old_dir, struct dentry *old_dentry, - struct inode *new_dir, struct dentry *new_dentry) + struct inode *new_dir, struct dentry *new_dentry, + unsigned int flags) { struct kernfs_node *kn = old_dentry->d_fsdata; struct kernfs_node *new_parent = new_dir->i_private; struct kernfs_syscall_ops *scops = kernfs_root(kn)->syscall_ops; int ret; + if (flags) + return -EINVAL; + if (!scops || !scops->rename) return -EPERM; @@ -1133,7 +1137,7 @@ const struct inode_operations kernfs_dir_iops = { .mkdir = kernfs_iop_mkdir, .rmdir = kernfs_iop_rmdir, - .rename = kernfs_iop_rename, + .rename2 = kernfs_iop_rename, }; static struct kernfs_node *kernfs_leftmost_descendant(struct kernfs_node *pos) |