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authorrwatson <rwatson@FreeBSD.org>2002-02-10 21:44:30 +0000
committerrwatson <rwatson@FreeBSD.org>2002-02-10 21:44:30 +0000
commit2bbae54d18d15c9c93f9567d79fe63538dd04bfd (patch)
tree069df193b86466f9270600030958b981aceda286 /sys/kern/vfs_vnops.c
parentef612b7ce49f905c66a8d08360c010cbcbd07aba (diff)
downloadFreeBSD-src-2bbae54d18d15c9c93f9567d79fe63538dd04bfd.zip
FreeBSD-src-2bbae54d18d15c9c93f9567d79fe63538dd04bfd.tar.gz
Make sure to hold vnode lock when calling into VOP_GETATTR().
Discussed with: mckusick, phk
Diffstat (limited to 'sys/kern/vfs_vnops.c')
-rw-r--r--sys/kern/vfs_vnops.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/sys/kern/vfs_vnops.c b/sys/kern/vfs_vnops.c
index d7c4bc8..e9b3e90 100644
--- a/sys/kern/vfs_vnops.c
+++ b/sys/kern/vfs_vnops.c
@@ -485,8 +485,13 @@ vn_statfile(fp, sb, td)
struct thread *td;
{
struct vnode *vp = (struct vnode *)fp->f_data;
+ int error;
- return vn_stat(vp, sb, td);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
+ error = vn_stat(vp, sb, td);
+ VOP_UNLOCK(vp, 0, td);
+
+ return (error);
}
int
@@ -617,7 +622,9 @@ vn_ioctl(fp, com, data, td)
case VREG:
case VDIR:
if (com == FIONREAD) {
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
error = VOP_GETATTR(vp, &vattr, td->td_proc->p_ucred, td);
+ VOP_UNLOCK(vp, 0, td);
if (error)
return (error);
*(int *)data = vattr.va_size - fp->f_offset;
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