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authorChristian Brauner <christian.brauner@ubuntu.com>2021-01-21 16:19:32 +0300
committerChristian Brauner <christian.brauner@ubuntu.com>2021-01-24 16:27:18 +0300
commit9fe61450972d3900bffb1dc26a17ebb9cdd92db2 (patch)
tree895d7d6485f03c01afa9f1b575e59878162f9373 /fs/namei.c
parentba73d98745be1c10dc3cce68e8d7b95012d07d05 (diff)
downloadlinux-9fe61450972d3900bffb1dc26a17ebb9cdd92db2.tar.xz
namei: introduce struct renamedata
In order to handle idmapped mounts we will extend the vfs rename helper to take two new arguments in follow up patches. Since this operations already takes a bunch of arguments add a simple struct renamedata and make the current helper use it before we extend it. Link: https://lore.kernel.org/r/20210121131959.646623-14-christian.brauner@ubuntu.com Cc: Christoph Hellwig <hch@lst.de> Cc: David Howells <dhowells@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-fsdevel@vger.kernel.org Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Diffstat (limited to 'fs/namei.c')
-rw-r--r--fs/namei.c21
1 files changed, 15 insertions, 6 deletions
diff --git a/fs/namei.c b/fs/namei.c
index 93fa7d803fb2..38ab51881247 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -4311,12 +4311,15 @@ SYSCALL_DEFINE2(link, const char __user *, oldname, const char __user *, newname
* ->i_mutex on parents, which works but leads to some truly excessive
* locking].
*/
-int vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
- struct inode *new_dir, struct dentry *new_dentry,
- struct inode **delegated_inode, unsigned int flags)
+int vfs_rename(struct renamedata *rd)
{
int error;
struct user_namespace *mnt_userns = &init_user_ns;
+ struct inode *old_dir = rd->old_dir, *new_dir = rd->new_dir;
+ struct dentry *old_dentry = rd->old_dentry;
+ struct dentry *new_dentry = rd->new_dentry;
+ struct inode **delegated_inode = rd->delegated_inode;
+ unsigned int flags = rd->flags;
bool is_dir = d_is_dir(old_dentry);
struct inode *source = old_dentry->d_inode;
struct inode *target = new_dentry->d_inode;
@@ -4442,6 +4445,7 @@ EXPORT_SYMBOL(vfs_rename);
int do_renameat2(int olddfd, struct filename *from, int newdfd,
struct filename *to, unsigned int flags)
{
+ struct renamedata rd;
struct dentry *old_dentry, *new_dentry;
struct dentry *trap;
struct path old_path, new_path;
@@ -4545,9 +4549,14 @@ retry_deleg:
&new_path, new_dentry, flags);
if (error)
goto exit5;
- error = vfs_rename(old_path.dentry->d_inode, old_dentry,
- new_path.dentry->d_inode, new_dentry,
- &delegated_inode, flags);
+
+ rd.old_dir = old_path.dentry->d_inode;
+ rd.old_dentry = old_dentry;
+ rd.new_dir = new_path.dentry->d_inode;
+ rd.new_dentry = new_dentry;
+ rd.delegated_inode = &delegated_inode;
+ rd.flags = flags;
+ error = vfs_rename(&rd);
exit5:
dput(new_dentry);
exit4: