From f03b8ad8d38634d13e802165cc15917481b47835 Mon Sep 17 00:00:00 2001
From: Miklos Szeredi <mszeredi@redhat.com>
Date: Tue, 27 Sep 2016 11:03:57 +0200
Subject: 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>
---
 fs/sysv/namei.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'fs/sysv')

diff --git a/fs/sysv/namei.c b/fs/sysv/namei.c
index a42de45ce40d..765d79de1217 100644
--- a/fs/sysv/namei.c
+++ b/fs/sysv/namei.c
@@ -206,7 +206,8 @@ static int sysv_rmdir(struct inode * dir, struct dentry * dentry)
  * higher-level routines.
  */
 static int sysv_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);
@@ -216,6 +217,9 @@ static int sysv_rename(struct inode * old_dir, struct dentry * old_dentry,
 	struct sysv_dir_entry * old_de;
 	int err = -ENOENT;
 
+	if (flags & ~RENAME_NOREPLACE)
+		return -EINVAL;
+
 	old_de = sysv_find_entry(old_dentry, &old_page);
 	if (!old_de)
 		goto out;
@@ -285,6 +289,6 @@ const struct inode_operations sysv_dir_inode_operations = {
 	.mkdir		= sysv_mkdir,
 	.rmdir		= sysv_rmdir,
 	.mknod		= sysv_mknod,
-	.rename		= sysv_rename,
+	.rename2	= sysv_rename,
 	.getattr	= sysv_getattr,
 };
-- 
cgit 


From 2773bf00aeb9bf39e022463272a61dd0ec9f55f4 Mon Sep 17 00:00:00 2001
From: Miklos Szeredi <mszeredi@redhat.com>
Date: Tue, 27 Sep 2016 11:03:58 +0200
Subject: fs: rename "rename2" i_op to "rename"

Generated patch:

sed -i "s/\.rename2\t/\.rename\t\t/" `git grep -wl rename2`
sed -i "s/\brename2\b/rename/g" `git grep -wl rename2`

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
---
 fs/sysv/namei.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'fs/sysv')

diff --git a/fs/sysv/namei.c b/fs/sysv/namei.c
index 765d79de1217..30bf6780985a 100644
--- a/fs/sysv/namei.c
+++ b/fs/sysv/namei.c
@@ -289,6 +289,6 @@ const struct inode_operations sysv_dir_inode_operations = {
 	.mkdir		= sysv_mkdir,
 	.rmdir		= sysv_rmdir,
 	.mknod		= sysv_mknod,
-	.rename2	= sysv_rename,
+	.rename		= sysv_rename,
 	.getattr	= sysv_getattr,
 };
-- 
cgit