From 1cd66c93ba8cdb873258f58ae6a817b28a02bcc3 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Tue, 27 Sep 2016 11:03:58 +0200 Subject: 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 Acked-by: Greg Kroah-Hartman Acked-by: David Howells [AFS] Acked-by: Mike Marshall Cc: Eric Van Hensbergen Cc: Ilya Dryomov Cc: Jan Harkes Cc: Tyler Hicks Cc: Oleg Drokin Cc: Trond Myklebust Cc: Mark Fasheh --- fs/kernfs/dir.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'fs/kernfs/dir.c') 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) -- cgit v1.2.3-55-g7522