@@ -702,7 +702,7 @@ static int fanotify_find_path(int dfd, const char __user *filename,
}
/* you can only watch an inode if you have read permissions on it */
- ret = inode_permission(&init_user_ns, path->dentry->d_inode, MAY_READ);
+ ret = inode_permission(mnt_user_ns(path->mnt), path->dentry->d_inode, MAY_READ);
if (ret) {
path_put(path);
goto out;
@@ -31,6 +31,7 @@
#include <linux/wait.h>
#include <linux/memcontrol.h>
#include <linux/security.h>
+#include <linux/mount.h>
#include "inotify.h"
#include "../fdinfo.h"
@@ -352,7 +353,7 @@ static int inotify_find_inode(const char __user *dirname, struct path *path,
if (error)
return error;
/* you can only watch an inode if you have read permissions on it */
- error = inode_permission(&init_user_ns, path->dentry->d_inode, MAY_READ);
+ error = inode_permission(mnt_user_ns(path->mnt), path->dentry->d_inode, MAY_READ);
if (error) {
path_put(path);
return error;
Enable notify implementations 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. 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 Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com> --- /* v2 */ patch introduced /* v3 */ unchanged /* v4 */ unchanged /* v5 */ base-commit: 7c53f6b671f4aba70ff15e1b05148b10d58c2837 --- fs/notify/fanotify/fanotify_user.c | 2 +- fs/notify/inotify/inotify_user.c | 3 ++- 2 files changed, 3 insertions(+), 2 deletions(-)