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/*
* Check decoding of NS_GET_{PID,TGID}_{FROM,IN}_PIDNS commands of ioctl syscall.
*
* Copyright (c) 2017-2024 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "scno.h"
#include "pidns.h"
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <linux/ioctl.h>
#include <linux/nsfs.h>
int
main(void)
{
PIDNS_TEST_INIT;
#ifdef PIDNS_TRANSLATION
pidns_print_leader();
errno = EBADF;
printf("ioctl(-1, NS_GET_USERNS)" RVAL_EBADF);
fflush(NULL);
ioctl(-1, NS_GET_USERNS);
#endif
static const struct {
unsigned int pt;
enum {
TRANS_RET,
TRANS_ARG,
} tr;
unsigned int val;
const char *str;
} ns_get_pid_ops[] = {
{ PT_TID, TRANS_RET, ARG_STR(NS_GET_PID_FROM_PIDNS) },
{ PT_TGID, TRANS_RET, ARG_STR(NS_GET_TGID_FROM_PIDNS) },
{ PT_TID, TRANS_ARG, ARG_STR(NS_GET_PID_IN_PIDNS) },
{ PT_TGID, TRANS_ARG, ARG_STR(NS_GET_TGID_IN_PIDNS) },
};
for (size_t i = 0; i < ARRAY_SIZE(ns_get_pid_ops); ++i) {
int pid = 0xfacefed1 + i;
int rc = ioctl(-1, ns_get_pid_ops[i].val, pid);
pidns_print_leader();
printf("ioctl(-1, %s, %d) = %s\n",
ns_get_pid_ops[i].str, pid, sprintrc(rc));
}
static const char ns_pid_path[] = "/proc/self/ns/pid";
int ns_pid_fd = open(ns_pid_path, O_RDONLY);
if (ns_pid_fd < 0) {
perror(ns_pid_path);
} else {
int pid = getpid();
const char *pid_str = pidns_pid2str(PT_TGID);
int tid = syscall(__NR_gettid);
const char *tid_str = pidns_pid2str(PT_TID);
for (size_t i = 0; i < ARRAY_SIZE(ns_get_pid_ops); ++i) {
int id = ns_get_pid_ops[i].pt == PT_TID ? tid : pid;
const char *id_str = ns_get_pid_ops[i].pt == PT_TID ?
tid_str : pid_str;
int rc = ioctl(ns_pid_fd, ns_get_pid_ops[i].val, id);
pidns_print_leader();
printf("ioctl(%d, %s, %d%s) = %s%s\n",
ns_pid_fd, ns_get_pid_ops[i].str, id,
ns_get_pid_ops[i].tr == TRANS_ARG ? id_str : "",
sprintrc(rc),
(ns_get_pid_ops[i].tr == TRANS_RET
&& rc != -1) ? id_str : "");
}
close(ns_pid_fd);
}
pidns_print_leader();
puts("+++ exited with 0 +++");
return 0;
}
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