This is a note to let you know that I've just added the patch titled
smb: client: set correct id, uid and cruid for multiuser automounts
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
smb-client-set-correct-id-uid-and-cruid-for-multiuser-automounts.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 4508ec17357094e2075f334948393ddedbb75157 Mon Sep 17 00:00:00 2001
From: Paulo Alcantara <pc@xxxxxxxxxxxxx>
Date: Sun, 11 Feb 2024 20:19:30 -0300
Subject: smb: client: set correct id, uid and cruid for multiuser automounts
From: Paulo Alcantara <pc@xxxxxxxxxxxxx>
commit 4508ec17357094e2075f334948393ddedbb75157 upstream.
When uid, gid and cruid are not specified, we need to dynamically
set them into the filesystem context used for automounting otherwise
they'll end up reusing the values from the parent mount.
Fixes: 9fd29a5bae6e ("cifs: use fs_context for automounts")
Reported-by: Shane Nehring <snehring@xxxxxxxxxxx>
Closes: https://bugzilla.redhat.com/show_bug.cgi?id=2259257
Cc: stable@xxxxxxxxxxxxxxx # 6.2+
Signed-off-by: Paulo Alcantara (Red Hat) <pc@xxxxxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/smb/client/namespace.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
--- a/fs/smb/client/namespace.c
+++ b/fs/smb/client/namespace.c
@@ -168,6 +168,21 @@ static char *automount_fullpath(struct d
return s;
}
+static void fs_context_set_ids(struct smb3_fs_context *ctx)
+{
+ kuid_t uid = current_fsuid();
+ kgid_t gid = current_fsgid();
+
+ if (ctx->multiuser) {
+ if (!ctx->uid_specified)
+ ctx->linux_uid = uid;
+ if (!ctx->gid_specified)
+ ctx->linux_gid = gid;
+ }
+ if (!ctx->cruid_specified)
+ ctx->cred_uid = uid;
+}
+
/*
* Create a vfsmount that we can automount
*/
@@ -205,6 +220,7 @@ static struct vfsmount *cifs_do_automoun
tmp.leaf_fullpath = NULL;
tmp.UNC = tmp.prepath = NULL;
tmp.dfs_root_ses = NULL;
+ fs_context_set_ids(&tmp);
rc = smb3_fs_context_dup(ctx, &tmp);
if (rc) {
Patches currently in stable-queue which might be from pc@xxxxxxxxxxxxx are
queue-6.6/smb-client-set-correct-id-uid-and-cruid-for-multiuser-automounts.patch
