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btrfs: add RENAME_NOREPLACE 

RENAME_NOREPLACE is trivial to implement for most filesystems: switch over
to ->rename2() and check for the supported flags.  The rest is done by the
VFS.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Cc: Chris Mason <clm@fb.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Miklos Szeredi 2014-07-23 15:15:32 +02:00 committed by Al Viro
parent a0dbc56610
commit 80ace85c91
1 changed files with 11 additions and 1 deletions
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12
fs/btrfs/inode.c
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@ -8476,6 +8476,16 @@ out_notrans:
return ret; return ret;
} }
static int btrfs_rename2(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry,
unsigned int flags)
{
if (flags & ~RENAME_NOREPLACE)
return -EINVAL;
return btrfs_rename(old_dir, old_dentry, new_dir, new_dentry);
}
static void btrfs_run_delalloc_work(struct btrfs_work *work) static void btrfs_run_delalloc_work(struct btrfs_work *work)
{ {
struct btrfs_delalloc_work *delalloc_work; struct btrfs_delalloc_work *delalloc_work;
@ -9019,7 +9029,7 @@ static const struct inode_operations btrfs_dir_inode_operations = {
.link = btrfs_link, .link = btrfs_link,
.mkdir = btrfs_mkdir, .mkdir = btrfs_mkdir,
.rmdir = btrfs_rmdir, .rmdir = btrfs_rmdir,
.rename = btrfs_rename, .rename2 = btrfs_rename2,
.symlink = btrfs_symlink, .symlink = btrfs_symlink,
.setattr = btrfs_setattr, .setattr = btrfs_setattr,
.mknod = btrfs_mknod, .mknod = btrfs_mknod,