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 <[email protected]>
Acked-by: Boaz Harrosh <[email protected]>
Acked-by: Richard Weinberger <[email protected]>
Acked-by: Bob Copeland <[email protected]>
Acked-by: Jan Kara <[email protected]>
Cc: Theodore Ts'o <[email protected]>
Cc: Jaegeuk Kim <[email protected]>
Cc: OGAWA Hirofumi <[email protected]>
Cc: Mikulas Patocka <[email protected]>
Cc: David Woodhouse <[email protected]>
Cc: Dave Kleikamp <[email protected]>
Cc: Ryusuke Konishi <[email protected]>
Cc: Christoph Hellwig <[email protected]>
This commit is contained in:
Miklos Szeredi 2016-09-27 11:03:57 +02:00
commit f03b8ad8d3
22 changed files with 123 additions and 42 deletions

View file

@ -286,10 +286,14 @@ static int hfs_remove(struct inode *dir, struct dentry *dentry)
* XXX: how do you handle must_be dir?
*/
static int hfs_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)
{
int res;
if (flags & ~RENAME_NOREPLACE)
return -EINVAL;
/* Unlink destination if it already exists */
if (d_really_is_positive(new_dentry)) {
res = hfs_remove(new_dir, new_dentry);
@ -320,6 +324,6 @@ const struct inode_operations hfs_dir_inode_operations = {
.unlink = hfs_remove,
.mkdir = hfs_mkdir,
.rmdir = hfs_remove,
.rename = hfs_rename,
.rename2 = hfs_rename,
.setattr = hfs_inode_setattr,
};