Author: jh
Date: Wed Aug 25 15:29:12 2010
New Revision: 211816
URL: http://svn.freebsd.org/changeset/base/211816
Log:
Call devfs_populate_vp() from devfs_getattr(). It was possible that
fstat(2) returned stale information through an open file descriptor.
Modified:
head/sys/fs/devfs/devfs_vnops.c
Modified: head/sys/fs/devfs/devfs_vnops.c
==============================================================================
--- head/sys/fs/devfs/devfs_vnops.c Wed Aug 25 15:21:26 2010
(r211815)
+++ head/sys/fs/devfs/devfs_vnops.c Wed Aug 25 15:29:12 2010
(r211816)
@@ -618,10 +618,18 @@ devfs_getattr(struct vop_getattr_args *a
{
struct vnode *vp = ap->a_vp;
struct vattr *vap = ap->a_vap;
- int error = 0;
+ int error;
struct devfs_dirent *de;
+ struct devfs_mount *dmp;
struct cdev *dev;
+ error = devfs_populate_vp(vp);
+ if (error != 0)
+ return (error);
+
+ dmp = VFSTODEVFS(vp->v_mount);
+ sx_xunlock(&dmp->dm_lock);
+
de = vp->v_data;
KASSERT(de != NULL, ("Null dirent in devfs_getattr vp=%p", vp));
if (vp->v_type == VDIR) {
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