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Pointing one element past an array is fine, pointing before it isn't.

This commit is contained in:
cbiere 2006-11-01 11:37:59 +00:00
parent 80b96f1aa4
commit 7aa8c7d98c
1 changed files with 6 additions and 6 deletions
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12
sys/kern/uipc_usrreq.c
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@ -1,4 +1,4 @@
/* $NetBSD: uipc_usrreq.c,v 1.93 2006/09/03 21:15:29 christos Exp $ */
/* $NetBSD: uipc_usrreq.c,v 1.94 2006/11/01 11:37:59 cbiere Exp $ */
/*-
* Copyright (c) 1998, 2000, 2004 The NetBSD Foundation, Inc.
@ -103,7 +103,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: uipc_usrreq.c,v 1.93 2006/09/03 21:15:29 christos Exp $");
__KERNEL_RCSID(0, "$NetBSD: uipc_usrreq.c,v 1.94 2006/11/01 11:37:59 cbiere Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -1012,16 +1012,16 @@ unp_internalize(struct mbuf *control, struct lwp *l)
* reverse order so that if pointers are bigger than ints, the
* int won't get until we're done.
*/
fdp = (int *)CMSG_DATA(cm) + nfds - 1;
rp = files + nfds - 1;
fdp = (int *)CMSG_DATA(cm) + nfds;
rp = files + nfds;
for (i = 0; i < nfds; i++) {
fp = fdescp->fd_ofiles[*fdp--];
fp = fdescp->fd_ofiles[*--fdp];
simple_lock(&fp->f_slock);
#ifdef DIAGNOSTIC
if (fp->f_iflags & FIF_WANTCLOSE)
panic("unp_internalize: file already closed");
#endif
*rp-- = fp;
*--rp = fp;
fp->f_count++;
fp->f_msgcount++;
simple_unlock(&fp->f_slock);