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authorMiklos Szeredi <mszeredi@redhat.com>2016-09-27 11:03:58 +0200
committerMiklos Szeredi <mszeredi@redhat.com>2016-09-27 11:03:58 +0200
commit1cd66c93ba8cdb873258f58ae6a817b28a02bcc3 (patch)
treef9a1f49b000c9959c5b278eae175b996ade3a7cd /fs/9p
parentlibfs: support RENAME_NOREPLACE in simple_rename() (diff)
downloadlinux-1cd66c93ba8cdb873258f58ae6a817b28a02bcc3.tar.xz
linux-1cd66c93ba8cdb873258f58ae6a817b28a02bcc3.zip
fs: make remaining filesystems use .rename2
This is trivial to do: - add flags argument to foo_rename() - check if flags is zero - assign foo_rename() to .rename2 instead of .rename This doesn't mean it's impossible to support RENAME_NOREPLACE for these filesystems, but it is not trivial, like for local filesystems. RENAME_NOREPLACE must guarantee atomicity (i.e. it shouldn't be possible for a file to be created on one host while it is overwritten by rename on another host). Filesystems converted: 9p, afs, ceph, coda, ecryptfs, kernfs, lustre, ncpfs, nfs, ocfs2, orangefs. After this, we can get rid of the duplicate interfaces for rename. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: David Howells <dhowells@redhat.com> [AFS] Acked-by: Mike Marshall <hubcap@omnibond.com> Cc: Eric Van Hensbergen <ericvh@gmail.com> Cc: Ilya Dryomov <idryomov@gmail.com> Cc: Jan Harkes <jaharkes@cs.cmu.edu> Cc: Tyler Hicks <tyhicks@canonical.com> Cc: Oleg Drokin <oleg.drokin@intel.com> Cc: Trond Myklebust <trond.myklebust@primarydata.com> Cc: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/9p')
-rw-r--r--fs/9p/v9fs.h3
-rw-r--r--fs/9p/vfs_inode.c10
-rw-r--r--fs/9p/vfs_inode_dotl.c2
3 files changed, 10 insertions, 5 deletions
diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h
index 6877050384a1..443d12e02043 100644
--- a/fs/9p/v9fs.h
+++ b/fs/9p/v9fs.h
@@ -148,7 +148,8 @@ extern struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
extern int v9fs_vfs_unlink(struct inode *i, struct dentry *d);
extern int v9fs_vfs_rmdir(struct inode *i, struct dentry *d);
extern int v9fs_vfs_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);
extern struct inode *v9fs_inode_from_fid(struct v9fs_session_info *v9ses,
struct p9_fid *fid,
struct super_block *sb, int new);
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 8b1999b528e9..50ab1a615207 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -955,7 +955,8 @@ int v9fs_vfs_rmdir(struct inode *i, struct dentry *d)
int
v9fs_vfs_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 retval;
struct inode *old_inode;
@@ -966,6 +967,9 @@ v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct p9_fid *newdirfid;
struct p9_wstat wstat;
+ if (flags)
+ return -EINVAL;
+
p9_debug(P9_DEBUG_VFS, "\n");
retval = 0;
old_inode = d_inode(old_dentry);
@@ -1436,7 +1440,7 @@ static const struct inode_operations v9fs_dir_inode_operations_dotu = {
.mkdir = v9fs_vfs_mkdir,
.rmdir = v9fs_vfs_rmdir,
.mknod = v9fs_vfs_mknod,
- .rename = v9fs_vfs_rename,
+ .rename2 = v9fs_vfs_rename,
.getattr = v9fs_vfs_getattr,
.setattr = v9fs_vfs_setattr,
};
@@ -1449,7 +1453,7 @@ static const struct inode_operations v9fs_dir_inode_operations = {
.mkdir = v9fs_vfs_mkdir,
.rmdir = v9fs_vfs_rmdir,
.mknod = v9fs_vfs_mknod,
- .rename = v9fs_vfs_rename,
+ .rename2 = v9fs_vfs_rename,
.getattr = v9fs_vfs_getattr,
.setattr = v9fs_vfs_setattr,
};
diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c
index eeabcb0bad12..8164be972b5c 100644
--- a/fs/9p/vfs_inode_dotl.c
+++ b/fs/9p/vfs_inode_dotl.c
@@ -964,7 +964,7 @@ const struct inode_operations v9fs_dir_inode_operations_dotl = {
.mkdir = v9fs_vfs_mkdir_dotl,
.rmdir = v9fs_vfs_rmdir,
.mknod = v9fs_vfs_mknod_dotl,
- .rename = v9fs_vfs_rename,
+ .rename2 = v9fs_vfs_rename,
.getattr = v9fs_vfs_getattr_dotl,
.setattr = v9fs_vfs_setattr_dotl,
.setxattr = generic_setxattr,