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authorMiklos Szeredi <mszeredi@redhat.com>2016-09-27 11:03:57 +0200
committerMiklos Szeredi <mszeredi@redhat.com>2016-09-27 11:03:57 +0200
commitf03b8ad8d38634d13e802165cc15917481b47835 (patch)
tree4dc9c060684f242d1e6c07d28d1ff625db63fd6c /fs/fat
parent9a232de4999666b2e8ea6775b2b0e3e4feb09b7a (diff)
downloadlinux-f03b8ad8d38634d13e802165cc15917481b47835.tar.bz2
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>
Diffstat (limited to 'fs/fat')
-rw-r--r--fs/fat/namei_msdos.c8
-rw-r--r--fs/fat/namei_vfat.c8
2 files changed, 12 insertions, 4 deletions
diff --git a/fs/fat/namei_msdos.c b/fs/fat/namei_msdos.c
index 664655b2c55f..6c814699d5d5 100644
--- a/fs/fat/namei_msdos.c
+++ b/fs/fat/namei_msdos.c
@@ -596,12 +596,16 @@ error_inode:
/***** Rename, a wrapper for rename_same_dir & rename_diff_dir */
static int msdos_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 super_block *sb = old_dir->i_sb;
unsigned char old_msdos_name[MSDOS_NAME], new_msdos_name[MSDOS_NAME];
int err, is_hid;
+ if (flags & ~RENAME_NOREPLACE)
+ return -EINVAL;
+
mutex_lock(&MSDOS_SB(sb)->s_lock);
err = msdos_format_name(old_dentry->d_name.name,
@@ -633,7 +637,7 @@ static const struct inode_operations msdos_dir_inode_operations = {
.unlink = msdos_unlink,
.mkdir = msdos_mkdir,
.rmdir = msdos_rmdir,
- .rename = msdos_rename,
+ .rename2 = msdos_rename,
.setattr = fat_setattr,
.getattr = fat_getattr,
};
diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c
index 92b7363dafa9..ce8986f3918a 100644
--- a/fs/fat/namei_vfat.c
+++ b/fs/fat/namei_vfat.c
@@ -903,7 +903,8 @@ out:
}
static int vfat_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 buffer_head *dotdot_bh;
struct msdos_dir_entry *dotdot_de;
@@ -914,6 +915,9 @@ static int vfat_rename(struct inode *old_dir, struct dentry *old_dentry,
int err, is_dir, update_dotdot, corrupt = 0;
struct super_block *sb = old_dir->i_sb;
+ if (flags & ~RENAME_NOREPLACE)
+ return -EINVAL;
+
old_sinfo.bh = sinfo.bh = dotdot_bh = NULL;
old_inode = d_inode(old_dentry);
new_inode = d_inode(new_dentry);
@@ -1036,7 +1040,7 @@ static const struct inode_operations vfat_dir_inode_operations = {
.unlink = vfat_unlink,
.mkdir = vfat_mkdir,
.rmdir = vfat_rmdir,
- .rename = vfat_rename,
+ .rename2 = vfat_rename,
.setattr = fat_setattr,
.getattr = fat_getattr,
};