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the tracer, not the tracee determine if we are going to convert the ptrace

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data from 64 to 32.
This commit is contained in:
christos 2019-06-24 20:29:41 +00:00
parent 5db96cbc84
commit 92a7bfb176
1 changed files with 17 additions and 5 deletions
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22
sys/kern/sys_ptrace_common.c
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@ -1,4 +1,4 @@
/* $NetBSD: sys_ptrace_common.c,v 1.55 2019/06/11 23:18:55 kamil Exp $ */
/* $NetBSD: sys_ptrace_common.c,v 1.56 2019/06/24 20:29:41 christos Exp $ */
/*-
* Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
@ -118,7 +118,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: sys_ptrace_common.c,v 1.55 2019/06/11 23:18:55 kamil Exp $");
__KERNEL_RCSID(0, "$NetBSD: sys_ptrace_common.c,v 1.56 2019/06/24 20:29:41 christos Exp $");
#ifdef _KERNEL_OPT
#include "opt_ptrace.h"
@ -1483,9 +1483,13 @@ process_doregs(struct lwp *curl /*tracer*/,
regwfunc_t w;
#ifdef COMPAT_NETBSD32
const bool pk32 = (l->l_proc->p_flag & PK_32) != 0;
const bool pk32 = (curl->l_proc->p_flag & PK_32) != 0;
if (__predict_false(pk32)) {
if ((l->l_proc->p_flag & PK_32) == 0) {
// 32 bit tracer can't trace 64 bit process
return EINVAL;
}
s = sizeof(process_reg32);
r = (regrfunc_t)process_read_regs32;
w = (regwfunc_t)process_write_regs32;
@ -1524,9 +1528,13 @@ process_dofpregs(struct lwp *curl /*tracer*/,
regwfunc_t w;
#ifdef COMPAT_NETBSD32
const bool pk32 = (l->l_proc->p_flag & PK_32) != 0;
const bool pk32 = (curl->l_proc->p_flag & PK_32) != 0;
if (__predict_false(pk32)) {
if ((l->l_proc->p_flag & PK_32) == 0) {
// 32 bit tracer can't trace 64 bit process
return EINVAL;
}
s = sizeof(process_fpreg32);
r = (regrfunc_t)process_read_fpregs32;
w = (regwfunc_t)process_write_fpregs32;
@ -1565,9 +1573,13 @@ process_dodbregs(struct lwp *curl /*tracer*/,
regwfunc_t w;
#ifdef COMPAT_NETBSD32
const bool pk32 = (l->l_proc->p_flag & PK_32) != 0;
const bool pk32 = (curl->l_proc->p_flag & PK_32) != 0;
if (__predict_false(pk32)) {
if ((l->l_proc->p_flag & PK_32) == 0) {
// 32 bit tracer can't trace 64 bit process
return EINVAL;
}
s = sizeof(process_dbreg32);
r = (regrfunc_t)process_read_dbregs32;
w = (regwfunc_t)process_write_dbregs32;