From: Ronnie Sahlberg <lsahlber@redhat.com>
Date: Wed, 28 Jul 2021 06:38:29 +0000 (+1000)
Subject: cifs: add missing parsing of backupuid
X-Git-Tag: v5.15~629^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b946dbcfa4df80ec81b442964e07ad37000cc059;p=platform%2Fkernel%2Flinux-starfive.git

cifs: add missing parsing of backupuid

We lost parsing of backupuid in the switch to new mount API.
Add it back.

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Cc: <stable@vger.kernel.org> # v5.11+
Reported-by: Xiaoli Feng <xifeng@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
---

diff --git a/fs/cifs/fs_context.c b/fs/cifs/fs_context.c
index 9a59d7f..eed59bc 100644
--- a/fs/cifs/fs_context.c
+++ b/fs/cifs/fs_context.c
@@ -925,6 +925,13 @@ static int smb3_fs_context_parse_param(struct fs_context *fc,
 		ctx->cred_uid = uid;
 		ctx->cruid_specified = true;
 		break;
+	case Opt_backupuid:
+		uid = make_kuid(current_user_ns(), result.uint_32);
+		if (!uid_valid(uid))
+			goto cifs_parse_mount_err;
+		ctx->backupuid = uid;
+		ctx->backupuid_specified = true;
+		break;
 	case Opt_backupgid:
 		gid = make_kgid(current_user_ns(), result.uint_32);
 		if (!gid_valid(gid))