hardenedbsd/HardenedBSD
1
0
Fork 0
mirror of https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git synced 2024-11-17 08:00:48 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Moved call to vnode_pager_uncache in rename() to before the VOP_RENAME.

Browse Source 
It was previously after the VOP_RENAME and the reference and lock on
the vnode had already been lost, allowing interesting internel
inconsistencies. This is one of the two reasons why freefall was crashing
every hour or two (the other being nullfs bugs).
Don't call vnode_pager_uncache in revoke(). revoke() is only allowed on
VCHR and VBLK vnodes.
This commit is contained in:
David Greenman 1995-03-19 11:16:58 +00:00
parent ae1f8971f2
commit ab828ab8bd
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=7158
2 changed files with 8 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
sys/kern/vfs_extattr.c
View File

@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)vfs_syscalls.c 8.13 (Berkeley) 4/15/94
* $Id: vfs_syscalls.c,v 1.18 1995/02/28 02:52:48 davidg Exp $
* $Id: vfs_syscalls.c,v 1.19 1995/03/16 18:12:50 bde Exp $
*/
#include <sys/param.h>
@ -1850,12 +1850,12 @@ out:
LEASE_CHECK(tdvp, p, p->p_ucred, LEASE_WRITE);
if (fromnd.ni_dvp != tdvp)
LEASE_CHECK(fromnd.ni_dvp, p, p->p_ucred, LEASE_WRITE);
if (tvp)
if (tvp) {
LEASE_CHECK(tvp, p, p->p_ucred, LEASE_WRITE);
(void) vnode_pager_uncache(tvp);
}
error = VOP_RENAME(fromnd.ni_dvp, fromnd.ni_vp, &fromnd.ni_cnd,
tond.ni_dvp, tond.ni_vp, &tond.ni_cnd);
if (tvp && !error)
(void) vnode_pager_uncache(tvp);
} else {
VOP_ABORTOP(tond.ni_dvp, &tond.ni_cnd);
if (tdvp == tvp)
@ -2222,8 +2222,6 @@ revoke(p, uap, retval)
if (p->p_ucred->cr_uid != vattr.va_uid &&
(error = suser(p->p_ucred, &p->p_acflag)))
goto out;
if( vp->v_vmdata)
vnode_pager_uncache( vp);
if (vp->v_usecount > 1 || (vp->v_flag & VALIASED))
vgoneall(vp);
out:

10
sys/kern/vfs_syscalls.c
View File

@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)vfs_syscalls.c 8.13 (Berkeley) 4/15/94
* $Id: vfs_syscalls.c,v 1.18 1995/02/28 02:52:48 davidg Exp $
* $Id: vfs_syscalls.c,v 1.19 1995/03/16 18:12:50 bde Exp $
*/
#include <sys/param.h>
@ -1850,12 +1850,12 @@ out:
LEASE_CHECK(tdvp, p, p->p_ucred, LEASE_WRITE);
if (fromnd.ni_dvp != tdvp)
LEASE_CHECK(fromnd.ni_dvp, p, p->p_ucred, LEASE_WRITE);
if (tvp)
if (tvp) {
LEASE_CHECK(tvp, p, p->p_ucred, LEASE_WRITE);
(void) vnode_pager_uncache(tvp);
}
error = VOP_RENAME(fromnd.ni_dvp, fromnd.ni_vp, &fromnd.ni_cnd,
tond.ni_dvp, tond.ni_vp, &tond.ni_cnd);
if (tvp && !error)
(void) vnode_pager_uncache(tvp);
} else {
VOP_ABORTOP(tond.ni_dvp, &tond.ni_cnd);
if (tdvp == tvp)
@ -2222,8 +2222,6 @@ revoke(p, uap, retval)
if (p->p_ucred->cr_uid != vattr.va_uid &&
(error = suser(p->p_ucred, &p->p_acflag)))
goto out;
if( vp->v_vmdata)
vnode_pager_uncache( vp);
if (vp->v_usecount > 1 || (vp->v_flag & VALIASED))
vgoneall(vp);
out: