fs: support RENAME_NOREPLACE for local filesystems
This is trivial to do:
- add flags argument to foo_rename()
- check if flags doesn't have any other than RENAME_NOREPLACE
- assign foo_rename() to .rename2 instead of .rename
Filesystems converted:
affs, bfs, exofs, ext2, hfs, hfsplus, jffs2, jfs, logfs, minix, msdos,
nilfs2, omfs, reiserfs, sysvfs, ubifs, udf, ufs, vfat.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Acked-by: Boaz Harrosh <ooo@electrozaur.com>
Acked-by: Richard Weinberger <richard@nod.at>
Acked-by: Bob Copeland <me@bobcopeland.com>
Acked-by: Jan Kara <jack@suse.cz>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Dave Kleikamp <shaggy@kernel.org>
Cc: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Cc: Christoph Hellwig <hch@infradead.org>
diff --git a/fs/nilfs2/namei.c b/fs/nilfs2/namei.c
index dbcf1dc..8540c13 100644
--- a/fs/nilfs2/namei.c
+++ b/fs/nilfs2/namei.c
@@ -350,7 +350,8 @@
}
static int nilfs_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 inode *old_inode = d_inode(old_dentry);
struct inode *new_inode = d_inode(new_dentry);
@@ -361,6 +362,9 @@
struct nilfs_transaction_info ti;
int err;
+ if (flags & ~RENAME_NOREPLACE)
+ return -EINVAL;
+
err = nilfs_transaction_begin(old_dir->i_sb, &ti, 1);
if (unlikely(err))
return err;
@@ -552,7 +556,7 @@
.mkdir = nilfs_mkdir,
.rmdir = nilfs_rmdir,
.mknod = nilfs_mknod,
- .rename = nilfs_rename,
+ .rename2 = nilfs_rename,
.setattr = nilfs_setattr,
.permission = nilfs_permission,
.fiemap = nilfs_fiemap,