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Catch up with chuck's stack changes. Don't map the linux stuff executable 

and avoid mapping segments that have 0 size.
This commit is contained in:
christos 2003-10-06 03:45:40 +00:00
parent ecc092a6f3
commit 07ceba4419
1 changed files with 8 additions and 6 deletions
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14
sys/compat/linux/arch/i386/linux_machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: linux_machdep.c,v 1.99 2003/09/25 22:00:02 christos Exp $ */
/* $NetBSD: linux_machdep.c,v 1.100 2003/10/06 03:45:40 christos Exp $ */
/*-
* Copyright (c) 1995, 2000 The NetBSD Foundation, Inc.
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: linux_machdep.c,v 1.99 2003/09/25 22:00:02 christos Exp $");
__KERNEL_RCSID(0, "$NetBSD: linux_machdep.c,v 1.100 2003/10/06 03:45:40 christos Exp $");
#if defined(_KERNEL_OPT)
#include "opt_vm86.h"
@ -1210,11 +1210,13 @@ linux_exec_setup_stack(struct proc *p, struct exec_package *epp)
noaccess_size = max_stack_size - access_size;
noaccess_linear_min = (u_long)STACK_ALLOC(STACK_GROW(epp->ep_minsaddr,
access_size), noaccess_size);
NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_zero, noaccess_size,
noaccess_linear_min, NULLVP, 0, VM_PROT_NONE);
if (noaccess_size > 0) {
NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_zero, noaccess_size,
noaccess_linear_min, NULLVP, 0, VM_PROT_NONE);
}
KASSERT(access_size > 0);
NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_zero, access_size,
access_linear_min, NULLVP, 0,
VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE);
access_linear_min, NULLVP, 0, VM_PROT_READ | VM_PROT_WRITE);
return 0;
}