diff mbox series

[v1,5/9] fs/fuse: support idmapped ->permission inode op

Message ID 20240108120824.122178-6-aleksandr.mikhalitsyn@canonical.com
State New
Headers
Series fuse: basic support for idmapped mounts |

Commit Message

Aleksandr Mikhalitsyn Jan. 8, 2024, 12:08 p.m. UTC 
  We only cover the case when "default_permissions" flag
is used. A reason for that is that otherwise all the permission
checks are done in the userspace and we have to deal with
VFS idmapping in the userspace (which is bad), alternatively
we have to provide the userspace with idmapped req->in.h.uid/req->in.h.gid
which is also not align with VFS idmaps philosophy.

Cc: Christian Brauner <brauner@kernel.org>
Cc: Seth Forshee <sforshee@kernel.org>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Cc: Amir Goldstein <amir73il@gmail.com>
Cc: Bernd Schubert <bschubert@ddn.com>
Cc: <linux-fsdevel@vger.kernel.org>
Signed-off-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
---
 fs/fuse/dir.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 5efcf06622f0..f7c2c54f7122 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -1558,7 +1558,7 @@  static int fuse_permission(struct mnt_idmap *idmap,
 	}
 
 	if (fc->default_permissions) {
-		err = generic_permission(&nop_mnt_idmap, inode, mask);
+		err = generic_permission(idmap, inode, mask);
 
 		/* If permission is denied, try to refresh file
 		   attributes.  This is also needed, because the root
@@ -1566,7 +1566,7 @@  static int fuse_permission(struct mnt_idmap *idmap,
 		if (err == -EACCES && !refreshed) {
 			err = fuse_perm_getattr(inode, mask);
 			if (!err)
-				err = generic_permission(&nop_mnt_idmap,
+				err = generic_permission(idmap,
 							 inode, mask);
 		}