From: Miklos Szeredi <mszeredi@xxxxxxx>
Introduce path_rename(). Make vfs_rename() static.
Signed-off-by: Miklos Szeredi <mszeredi@xxxxxxx>
---
fs/ecryptfs/inode.c | 22 ++++++++++++----------
fs/namei.c | 33 ++++++++++++++++++++++++---------
fs/nfsd/vfs.c | 19 +++++--------------
include/linux/fs.h | 3 ++-
4 files changed, 43 insertions(+), 34 deletions(-)
Index: linux-2.6/fs/ecryptfs/inode.c
===================================================================
--- linux-2.6.orig/fs/ecryptfs/inode.c 2008-05-16 17:50:50.000000000 +0200
+++ linux-2.6/fs/ecryptfs/inode.c 2008-05-16 17:50:51.000000000 +0200
@@ -555,25 +555,27 @@ ecryptfs_rename(struct inode *old_dir, s
int rc;
struct dentry *lower_old_dentry;
struct dentry *lower_new_dentry;
- struct dentry *lower_old_dir_dentry;
- struct dentry *lower_new_dir_dentry;
+ struct path lower_old_dir;
+ struct path lower_new_dir;
lower_old_dentry = ecryptfs_dentry_to_lower(old_dentry);
lower_new_dentry = ecryptfs_dentry_to_lower(new_dentry);
dget(lower_old_dentry);
dget(lower_new_dentry);
- lower_old_dir_dentry = dget_parent(lower_old_dentry);
- lower_new_dir_dentry = dget_parent(lower_new_dentry);
- lock_rename(lower_old_dir_dentry, lower_new_dir_dentry);
- rc = vfs_rename(lower_old_dir_dentry->d_inode, lower_old_dentry,
- lower_new_dir_dentry->d_inode, lower_new_dentry);
+ lower_old_dir.mnt = ecryptfs_dentry_to_lower_mnt(old_dentry);
+ lower_old_dir.dentry = dget_parent(lower_old_dentry);
+ lower_new_dir.mnt = ecryptfs_dentry_to_lower_mnt(new_dentry);
+ lower_new_dir.dentry = dget_parent(lower_new_dentry);
+ lock_rename(lower_old_dir.dentry, lower_new_dir.dentry);
+ rc = path_rename(&lower_old_dir, lower_old_dentry,
+ &lower_new_dir, lower_new_dentry);
if (rc)
goto out_lock;
- fsstack_copy_attr_all(new_dir, lower_new_dir_dentry->d_inode, NULL);
+ fsstack_copy_attr_all(new_dir, lower_new_dir.dentry->d_inode, NULL);
if (new_dir != old_dir)
- fsstack_copy_attr_all(old_dir, lower_old_dir_dentry->d_inode, NULL);
+ fsstack_copy_attr_all(old_dir, lower_old_dir.dentry->d_inode, NULL);
out_lock:
- unlock_rename(lower_old_dir_dentry, lower_new_dir_dentry);
+ unlock_rename(lower_old_dir.dentry, lower_new_dir.dentry);
dput(lower_new_dentry->d_parent);
dput(lower_old_dentry->d_parent);
dput(lower_new_dentry);
Index: linux-2.6/fs/namei.c
===================================================================
--- linux-2.6.orig/fs/namei.c 2008-05-16 17:50:50.000000000 +0200
+++ linux-2.6/fs/namei.c 2008-05-16 17:50:51.000000000 +0200
@@ -2732,8 +2732,8 @@ static int vfs_rename_other(struct inode
return error;
}
-int vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
- struct inode *new_dir, struct dentry *new_dentry)
+static int vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
+ struct inode *new_dir, struct dentry *new_dentry)
{
int error;
int is_dir = S_ISDIR(old_dentry->d_inode->i_mode);
@@ -2775,6 +2775,27 @@ int vfs_rename(struct inode *old_dir, st
return error;
}
+int path_rename(struct path *old_dir_path, struct dentry *old_dentry,
+ struct path *new_dir_path, struct dentry *new_dentry)
+{
+ int error;
+ struct vfsmount *mnt = old_dir_path->mnt;
+
+ BUG_ON(mnt != new_dir_path->mnt);
+
+ error = mnt_want_write(mnt);
+ if (!error) {
+ struct inode *old_dir = old_dir_path->dentry->d_inode;
+ struct inode *new_dir = new_dir_path->dentry->d_inode;
+
+ error = vfs_rename(old_dir, old_dentry, new_dir, new_dentry);
+ mnt_drop_write(mnt);
+ }
+
+ return error;
+}
+EXPORT_SYMBOL(path_rename);
+
static int do_rename(int olddfd, const char *oldname,
int newdfd, const char *newname)
{
@@ -2836,12 +2857,7 @@ static int do_rename(int olddfd, const c
if (new_dentry == trap)
goto exit5;
- error = mnt_want_write(oldnd.path.mnt);
- if (error)
- goto exit5;
- error = vfs_rename(old_dir->d_inode, old_dentry,
- new_dir->d_inode, new_dentry);
- mnt_drop_write(oldnd.path.mnt);
+ error = path_rename(&oldnd.path, old_dentry, &newnd.path, new_dentry);
exit5:
dput(new_dentry);
exit4:
@@ -3032,6 +3048,5 @@ EXPORT_SYMBOL(unlock_rename);
EXPORT_SYMBOL(vfs_follow_link);
EXPORT_SYMBOL(generic_permission);
EXPORT_SYMBOL(vfs_readlink);
-EXPORT_SYMBOL(vfs_rename);
EXPORT_SYMBOL(dentry_unhash);
EXPORT_SYMBOL(generic_readlink);
Index: linux-2.6/fs/nfsd/vfs.c
===================================================================
--- linux-2.6.orig/fs/nfsd/vfs.c 2008-05-16 17:50:50.000000000 +0200
+++ linux-2.6/fs/nfsd/vfs.c 2008-05-16 17:50:51.000000000 +0200
@@ -1650,8 +1650,9 @@ __be32
nfsd_rename(struct svc_rqst *rqstp, struct svc_fh *ffhp, char *fname, int flen,
struct svc_fh *tfhp, char *tname, int tlen)
{
+ struct path old_dir_path;
+ struct path new_dir_path;
struct dentry *fdentry, *tdentry, *odentry, *ndentry, *trap;
- struct inode *fdir, *tdir;
__be32 err;
int host_err;
@@ -1663,10 +1664,7 @@ nfsd_rename(struct svc_rqst *rqstp, stru
goto out;
fdentry = ffhp->fh_dentry;
- fdir = fdentry->d_inode;
-
tdentry = tfhp->fh_dentry;
- tdir = tdentry->d_inode;
err = (rqstp->rq_vers == 2) ? nfserr_acces : nfserr_xdev;
if (ffhp->fh_export != tfhp->fh_export)
@@ -1710,22 +1708,15 @@ nfsd_rename(struct svc_rqst *rqstp, stru
goto out_dput_new;
}
- host_err = -EXDEV;
- if (ffhp->fh_export->ex_path.mnt != tfhp->fh_export->ex_path.mnt)
- goto out_dput_new;
- host_err = mnt_want_write(ffhp->fh_export->ex_path.mnt);
- if (host_err)
- goto out_dput_new;
-
- host_err = vfs_rename(fdir, odentry, tdir, ndentry);
+ fh_to_path(ffhp, &old_dir_path);
+ fh_to_path(tfhp, &new_dir_path);
+ host_err = path_rename(&old_dir_path, odentry, &new_dir_path, ndentry);
if (!host_err && EX_ISSYNC(tfhp->fh_export)) {
host_err = nfsd_sync_dir(tdentry);
if (!host_err)
host_err = nfsd_sync_dir(fdentry);
}
- mnt_drop_write(ffhp->fh_export->ex_path.mnt);
-
out_dput_new:
dput(ndentry);
out_dput_old:
Index: linux-2.6/include/linux/fs.h
===================================================================
--- linux-2.6.orig/include/linux/fs.h 2008-05-16 17:50:50.000000000 +0200
+++ linux-2.6/include/linux/fs.h 2008-05-16 17:50:51.000000000 +0200
@@ -1131,7 +1131,8 @@ extern int path_symlink(struct path *, s
extern int path_link(struct dentry *, struct path *, struct dentry *);
extern int path_rmdir(struct path *, struct dentry *);
extern int path_unlink(struct path *, struct dentry *);
-extern int vfs_rename(struct inode *, struct dentry *, struct inode *, struct dentry *);
+extern int path_rename(struct path *, struct dentry *,
+ struct path *, struct dentry *);
/*
* VFS dentry helper functions.
--
--
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