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Add some diagnostic printf's when we reset permissions.

This commit is contained in:
christos 2016-04-04 16:47:39 +00:00
parent 849c4feb3c
commit 43b93ab851
1 changed files with 12 additions and 2 deletions
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14
sys/kern/kern_pax.c
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@ -1,4 +1,4 @@
/* $NetBSD: kern_pax.c,v 1.36 2016/03/20 16:39:36 christos Exp $ */
/* $NetBSD: kern_pax.c,v 1.37 2016/04/04 16:47:39 christos Exp $ */
/*
* Copyright (c) 2015 The NetBSD Foundation, Inc.
@ -57,7 +57,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kern_pax.c,v 1.36 2016/03/20 16:39:36 christos Exp $");
__KERNEL_RCSID(0, "$NetBSD: kern_pax.c,v 1.37 2016/04/04 16:47:39 christos Exp $");
#include "opt_pax.h"
@ -363,9 +363,19 @@ pax_mprotect(struct lwp *l, vm_prot_t *prot, vm_prot_t *maxprot)
return;
if ((*prot & (VM_PROT_WRITE|VM_PROT_EXECUTE)) != VM_PROT_EXECUTE) {
#ifdef DIAGNOSTIC
struct proc *p = l->l_proc;
printf("%s: %d.%d (%s): clearing execute bit\n", __func__,
p->p_pid, l->l_lid, p->p_comm);
#endif
*prot &= ~VM_PROT_EXECUTE;
*maxprot &= ~VM_PROT_EXECUTE;
} else {
#ifdef DIAGNOSTIC
struct proc *p = l->l_proc;
printf("%s: %d.%d (%s): clearing write bit\n", __func__,
p->p_pid, l->l_lid, p->p_comm);
#endif
*prot &= ~VM_PROT_WRITE;
*maxprot &= ~VM_PROT_WRITE;
}