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/*
* Check decoding of get_robust_list and set_robust_list syscalls.
*
* Copyright (c) 2015-2016 Dmitry V. Levin <ldv@strace.io>
* Copyright (c) 2015-2021 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "scno.h"
#include "pidns.h"
#include <stdio.h>
#include <unistd.h>
static const char *
sprintaddr(void *addr)
{
static char buf[sizeof(addr) * 2 + sizeof("0x")];
if (!addr)
return "NULL";
else
snprintf(buf, sizeof(buf), "%p", addr);
return buf;
}
int
main(void)
{
PIDNS_TEST_INIT;
const pid_t pid = getpid();
const char *pid_str = pidns_pid2str(PT_TGID);
const long long_pid = (unsigned long) (0xdeadbeef00000000LL | pid);
TAIL_ALLOC_OBJECT_CONST_PTR(void *, p_head);
TAIL_ALLOC_OBJECT_CONST_PTR(size_t, p_len);
/* It has dual-use as a marker of the beginning of the test output */
long rc = syscall(__NR_get_robust_list, 0, 0, 0);
pidns_print_leader();
printf("get_robust_list(0, NULL, NULL) = %s\n", sprintrc(rc));
if (syscall(__NR_get_robust_list, long_pid, p_head, p_len))
perror_msg_and_skip("get_robust_list");
pidns_print_leader();
printf("get_robust_list(%d%s, [%s], [%lu]) = 0\n",
pid, pid_str, sprintaddr(*p_head),
(unsigned long) *p_len);
void *head = tail_alloc(*p_len);
if (syscall(__NR_set_robust_list, head, *p_len))
perror_msg_and_skip("set_robust_list");
pidns_print_leader();
printf("set_robust_list(%p, %lu) = 0\n",
head, (unsigned long) *p_len);
if (syscall(__NR_get_robust_list, long_pid, p_head, p_len))
perror_msg_and_skip("get_robust_list");
pidns_print_leader();
printf("get_robust_list(%d%s, [%s], [%lu]) = 0\n",
pid, pid_str, sprintaddr(*p_head),
(unsigned long) *p_len);
pidns_print_leader();
puts("+++ exited with 0 +++");
return 0;
}
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