// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2017 Cyril Hrubis <chrubis@suse.cz>
*/
#define _GNU_SOURCE
#include <unistd.h>
#include <errno.h>
#include <sched.h>
#include <sys/ptrace.h>
#include "config.h"
#ifdef HAVE_SYS_FANOTIFY_H
# include <sys/fanotify.h>
#endif
#define TST_NO_DEFAULT_MAIN
#include "tst_test.h"
#include "lapi/setns.h"
#include "tst_safe_macros.h"
#include "lapi/personality.h"
int safe_setpgid(const char *file, const int lineno, pid_t pid, pid_t pgid)
{
int rval;
rval = setpgid(pid, pgid);
if (rval) {
tst_brk(TBROK | TERRNO,
"%s:%d: setpgid(%i, %i) failed",
file, lineno, pid, pgid);
}
return rval;
}
pid_t safe_getpgid(const char *file, const int lineno, pid_t pid)
{
pid_t pgid;
pgid = getpgid(pid);
if (pgid == -1) {
tst_brk(TBROK | TERRNO,
"%s:%d: getpgid(%i) failed", file, lineno, pid);
}
return pgid;
}
int safe_fanotify_init(const char *file, const int lineno,
unsigned int flags, unsigned int event_f_flags)
{
int rval;
#ifdef HAVE_SYS_FANOTIFY_H
rval = fanotify_init(flags, event_f_flags);
if (rval == -1) {
if (errno == ENOSYS) {
tst_brk(TCONF,
"fanotify is not configured in this kernel.");
}
tst_brk(TBROK | TERRNO,
"%s:%d: fanotify_init() failed", file, lineno);
}
#else
tst_brk(TCONF, "Header <sys/fanotify.h> is not present");
#endif /* HAVE_SYS_FANOTIFY_H */
return rval;
}
int safe_personality(const char *filename, unsigned int lineno,
unsigned long persona)
{
int prev_persona = personality(persona);
if (prev_persona < 0) {
tst_brk_(filename, lineno, TBROK | TERRNO,
"persona(%ld) failed", persona);
}
return prev_persona;
}
int safe_setregid(const char *file, const int lineno,
gid_t rgid, gid_t egid)
{
int rval;
rval = setregid(rgid, egid);
if (rval == -1) {
tst_brk_(file, lineno, TBROK | TERRNO,
"setregid(%li, %li) failed",
(long)rgid, (long)egid);
}
return rval;
}
int safe_setreuid(const char *file, const int lineno,
uid_t ruid, uid_t euid)
{
int rval;
rval = setreuid(ruid, euid);
if (rval == -1) {
tst_brk_(file, lineno, TBROK | TERRNO,
"setreuid(%li, %li) failed",
(long)ruid, (long)euid);
}
return rval;
}
int safe_sigaction(const char *file, const int lineno,
int signum, const struct sigaction *act,
struct sigaction *oldact)
{
int rval;
rval = sigaction(signum, act, oldact);
if (rval == -1) {
tst_brk_(file, lineno, TBROK | TERRNO,
"sigaction(%s (%d), %p, %p) failed",
tst_strsig(signum), signum, act, oldact);
}
return rval;
}
void safe_sigaddset(const char *file, const int lineno,
sigset_t *sigs, int signo)
{
int rval;
rval = sigaddset(sigs, signo);
if (rval == -1) {
tst_brk_(file, lineno, TBROK | TERRNO,
"sigaddset() %s (%i) failed",
tst_strsig(signo), signo);
}
}
void safe_sigdelset(const char *file, const int lineno,
sigset_t *sigs, int signo)
{
int rval;
rval = sigdelset(sigs, signo);
if (rval == -1) {
tst_brk_(file, lineno, TBROK | TERRNO,
"sigdelset() %s (%i) failed",
tst_strsig(signo), signo);
}
}
void safe_sigemptyset(const char *file, const int lineno,
sigset_t *sigs)
{
int rval;
rval = sigemptyset(sigs);
if (rval == -1)
tst_brk_(file, lineno, TBROK | TERRNO, "sigemptyset() failed");
}
void safe_sigfillset(const char *file, const int lineno,
sigset_t *sigs)
{
int rval;
rval = sigfillset(sigs);
if (rval == -1)
tst_brk_(file, lineno, TBROK | TERRNO, "sigfillset() failed");
}
static const char *strhow(int how)
{
switch (how) {
case SIG_BLOCK:
return "SIG_BLOCK";
case SIG_UNBLOCK:
return "SIG_UNBLOCK";
case SIG_SETMASK:
return "SIG_SETMASK";
default:
return "???";
}
}
void safe_sigprocmask(const char *file, const int lineno,
int how, sigset_t *set, sigset_t *oldset)
{
int rval;
rval = sigprocmask(how, set, oldset);
if (rval == -1) {
tst_brk_(file, lineno, TBROK | TERRNO,
"sigprocmask(%s, %p, %p)", strhow(how), set, oldset);
}
}
void safe_sigwait(const char *file, const int lineno,
sigset_t *set, int *sig)
{
int rval;
rval = sigwait(set, sig);
if (rval != 0) {
errno = rval;
tst_brk_(file, lineno, TBROK, "sigwait(%p, %p)", set, sig);
}
}
struct group *safe_getgrnam(const char *file, const int lineno,
const char *name)
{
struct group *rval;
errno = 0;
rval = getgrnam(name);
if (rval == NULL) {
tst_brk_(file, lineno, TBROK | TERRNO,
"getgrnam(%s) failed", name);
}
return rval;
}
struct group *safe_getgrnam_fallback(const char *file, const int lineno,
const char *name, const char *fallback)
{
struct group *rval;
errno = 0;
rval = getgrnam(name);
if (rval == NULL) {
tst_res_(file, lineno, TINFO,
"getgrnam(%s) failed - try fallback %s",
name, fallback);
rval = safe_getgrnam(file, lineno, fallback);
}
return rval;
}
struct group *safe_getgrgid(const char *file, const int lineno, gid_t gid)
{
struct group *rval;
errno = 0;
rval = getgrgid(gid);
if (rval == NULL) {
tst_brk_(file, lineno, TBROK | TERRNO,
"getgrgid(%li) failed", (long)gid);
}
return rval;
}
int safe_chroot(const char *file, const int lineno, const char *path)
{
int rval;
rval = chroot(path);
if (rval == -1) {
tst_brk_(file, lineno, TBROK | TERRNO,
"chroot(%s) failed", path);
}
return rval;
}
void safe_unshare(const char *file, const int lineno, int flags)
{
int res;
res = unshare(flags);
if (res == -1) {
if (errno == EINVAL) {
tst_brk_(file, lineno, TCONF | TERRNO,
"unshare(%d) unsupported", flags);
} else {
tst_brk_(file, lineno, TBROK | TERRNO,
"unshare(%d) failed", flags);
}
}
}
void safe_setns(const char *file, const int lineno, int fd, int nstype)
{
int ret;
ret = setns(fd, nstype);
if (ret == -1) {
tst_brk_(file, lineno, TBROK | TERRNO, "setns(%i, %i) failed",
fd, nstype);
}
}
long tst_safe_ptrace(const char *file, const int lineno, int req, pid_t pid,
void *addr, void *data)
{
long ret;
errno = 0;
ret = ptrace(req, pid, addr, data);
if (ret == -1) {
tst_brk_(file, lineno, TBROK | TERRNO, "ptrace() failed");
} else if (ret) {
tst_brk_(file, lineno, TBROK | TERRNO,
"Invalid ptrace() return value %ld", ret);
}
return ret;
}
int safe_pipe2(const char *file, const int lineno, int fildes[2], int flags)
{
int ret;
ret = pipe2(fildes, flags);
if (ret == -1) {
tst_brk_(file, lineno, TBROK | TERRNO,
"pipe2({%d,%d}) failed with flag(%d)",
fildes[0], fildes[1], flags);
}
return ret;
}
