Module Name: src
Committed By: hannken
Date: Sat Mar 19 13:50:28 UTC 2022
Modified Files:
src/sys/kern: vfs_mount.c
Log Message:
Lock vnode across VOP_OPEN.
To generate a diff of this commit:
cvs rdiff -u -r1.89 -r1.90 src/sys/kern/vfs_mount.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/kern/vfs_mount.c
diff -u src/sys/kern/vfs_mount.c:1.89 src/sys/kern/vfs_mount.c:1.90
--- src/sys/kern/vfs_mount.c:1.89 Wed Mar 16 20:31:02 2022
+++ src/sys/kern/vfs_mount.c Sat Mar 19 13:50:28 2022
@@ -1,4 +1,4 @@
-/* $NetBSD: vfs_mount.c,v 1.89 2022/03/16 20:31:02 andvar Exp $ */
+/* $NetBSD: vfs_mount.c,v 1.90 2022/03/19 13:50:28 hannken Exp $ */
/*-
* Copyright (c) 1997-2020 The NetBSD Foundation, Inc.
@@ -67,7 +67,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vfs_mount.c,v 1.89 2022/03/16 20:31:02 andvar Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vfs_mount.c,v 1.90 2022/03/19 13:50:28 hannken Exp $");
#include <sys/param.h>
#include <sys/kernel.h>
@@ -1178,7 +1178,9 @@ vfs_mountroot(void)
panic("vfs_mountroot: rootdev not set for DV_DISK");
if (bdevvp(rootdev, &rootvp))
panic("vfs_mountroot: can't get vnode for rootdev");
+ vn_lock(rootvp, LK_EXCLUSIVE | LK_RETRY);
error = VOP_OPEN(rootvp, FREAD, FSCRED);
+ VOP_UNLOCK(rootvp);
if (error) {
printf("vfs_mountroot: can't open root device\n");
return (error);
