mirror of
https://github.com/opnsense/src.git
synced 2026-02-10 06:15:40 -05:00
07d3738b82
Add parens around _STACK_FLAG_GROWS expression to fix GCC warning about arithmetic in operand of '|'. Sponsored by: The FreeBSD Foundation
51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
/*-
|
|
* Copyright (c) 2023 Dmitry Chagin <dchagin@FreeBSD.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/user.h>
|
|
|
|
#include <assert.h>
|
|
#include <libprocstat.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
int checkstack(void);
|
|
|
|
#define _STACK_FLAG_GROWS (KVME_FLAG_GROWS_UP | KVME_FLAG_GROWS_DOWN)
|
|
int
|
|
checkstack(void)
|
|
{
|
|
struct kinfo_vmentry *freep, *kve;
|
|
struct kinfo_proc *p;
|
|
struct procstat *prstat;
|
|
uint64_t stack;
|
|
int i, cnt;
|
|
|
|
prstat = procstat_open_sysctl();
|
|
assert(prstat != NULL);
|
|
p = procstat_getprocs(prstat, KERN_PROC_PID, getpid(), &cnt);
|
|
assert(p != NULL);
|
|
freep = procstat_getvmmap(prstat, p, &cnt);
|
|
assert(freep != NULL);
|
|
|
|
stack = (uint64_t)&i;
|
|
for (i = 0; i < cnt; i++) {
|
|
kve = &freep[i];
|
|
if (stack < kve->kve_start || stack > kve->kve_end)
|
|
continue;
|
|
if ((kve->kve_flags & _STACK_FLAG_GROWS) != 0 &&
|
|
(kve->kve_protection & KVME_PROT_EXEC) != 0)
|
|
stack = 0;
|
|
break;
|
|
}
|
|
|
|
free(freep);
|
|
procstat_freeprocs(prstat, p);
|
|
procstat_close(prstat);
|
|
return (stack != 0);
|
|
}
|