Aren/NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

sproc: Correctly interpret NULL stack and stacklen when shared vm space is not

Browse Source 
requested
This commit is contained in:
manu 2002-04-29 16:01:12 +00:00
parent c85510bdd7
commit 27cb16e028
1 changed files with 11 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
sys/compat/irix/irix_prctl.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: irix_prctl.c,v 1.7 2002/04/28 19:42:13 manu Exp $ */
/* $NetBSD: irix_prctl.c,v 1.8 2002/04/29 16:01:12 manu Exp $ */
/*-
* Copyright (c) 2001-2002 The NetBSD Foundation, Inc.
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: irix_prctl.c,v 1.7 2002/04/28 19:42:13 manu Exp $");
__KERNEL_RCSID(0, "$NetBSD: irix_prctl.c,v 1.8 2002/04/29 16:01:12 manu Exp $");
#include <sys/errno.h>
#include <sys/types.h>
@ -200,17 +200,16 @@ static int irix_sproc(entry, inh, arg, sp, len, pid, p, retval)
/*
* Setting up child stack
*/
if (len == 0)
len = p->p_rlimit[RLIMIT_STACK].rlim_cur;
if (sp == NULL) {
sp = (caddr_t)(round_page(tf->f_regs[SP])
- IRIX_SPROC_STACK_OFFSET - len);
while (trunc_page((u_long)sp) >=
(u_long)p->p_vmspace->vm_maxsaddr)
sp -= IRIX_SPROC_STACK_OFFSET;
}
if (inh & IRIX_PR_SADDR) {
if (len == 0)
len = p->p_rlimit[RLIMIT_STACK].rlim_cur;
if (sp == NULL)
sp = (caddr_t)(round_page(tf->f_regs[SP])
- IRIX_SPROC_STACK_OFFSET - len);
while (trunc_page((u_long)sp) >=
(u_long)p->p_vmspace->vm_maxsaddr)
sp -= IRIX_SPROC_STACK_OFFSET;
bzero(&vmc, sizeof(vmc));
vmc.ev_addr = trunc_page((u_long)sp);
vmc.ev_len = round_page(len);