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utimes: handle idmapped mounts 

Enable the vfs_utimes() helper to handle idmapped mounts by passing down
the mount's user namespace. If the initial user namespace is passed
nothing changes so non-idmapped mounts will see identical behavior as
before.

Link: https://lore.kernel.org/r/20210121131959.646623-19-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>
Reviewed-by: James Morris <jamorris@linux.microsoft.com>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
This commit is contained in:
Christian Brauner 2021-01-21 14:19:37 +01:00
parent 7c02cf73d0
commit d06c26f196
No known key found for this signature in database
GPG Key ID: 91C61BC06578DCA2
1 changed files with 1 additions and 1 deletions
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fs/utimes.c
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@ -62,7 +62,7 @@ int vfs_utimes(const struct path *path, struct timespec64 *times)
} }
retry_deleg: retry_deleg:
inode_lock(inode); inode_lock(inode);
error = notify_change(&init_user_ns, path->dentry, &newattrs, error = notify_change(mnt_user_ns(path->mnt), path->dentry, &newattrs,
&delegated_inode); &delegated_inode);
inode_unlock(inode); inode_unlock(inode);
if (delegated_inode) { if (delegated_inode) {