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/*
* Check decoding of ppoll syscall.
*
* Copyright (c) 2015-2018 Dmitry V. Levin <ldv@strace.io>
* Copyright (c) 2015-2023 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "scno.h"
#ifdef __NR_ppoll
# include <errno.h>
# include <poll.h>
# include <signal.h>
# include <stdio.h>
# include <string.h>
# include <unistd.h>
# ifndef PATH_TRACING_FD
# define PATH_TRACING_FD 0
# endif
# ifndef TRACING_FDS
# define TRACING_FDS 0
# endif
# ifndef TRACING_FD1
# define TRACING_FD1 0
# endif
# ifndef TRACING_FD2
# define TRACING_FD2 0
# endif
# ifndef TRACE_FD1
# define TRACE_FD1 (!PATH_TRACING_FD && (!TRACING_FDS || TRACING_FD1))
# endif
# ifndef TRACE_FD2
# define TRACE_FD2 (!PATH_TRACING_FD && (!TRACING_FDS || TRACING_FD2))
# endif
# ifndef TRACE_OTHER_FDS
# define TRACE_OTHER_FDS (!PATH_TRACING_FD && !TRACING_FDS)
# endif
static const char *errstr;
static long
sys_ppoll(const kernel_ulong_t ufds,
const kernel_ulong_t nfds,
const kernel_ulong_t tsp,
const kernel_ulong_t sigmask,
const kernel_ulong_t sigsetsize)
{
long rc = syscall(__NR_ppoll, ufds, nfds, tsp, sigmask, sigsetsize);
errstr = sprintrc(rc);
return rc;
}
int
main(void)
{
# if PATH_TRACING_FD
skip_if_unavailable("/proc/self/fd/");
# endif
static const kernel_ulong_t bogus_nfds =
(kernel_ulong_t) 0xdeadbeeffacefeedULL;
static const kernel_ulong_t bogus_sigsetsize =
(kernel_ulong_t) 0xdeadbeefbadc0dedULL;
static const char *const POLLWRNORM_str =
(POLLWRNORM == POLLOUT) ? "" : "|POLLWRNORM";
static const char *const USR2_CHLD_str =
(SIGUSR2 < SIGCHLD) ? "USR2 CHLD" : "CHLD USR2";
void *const efault = tail_alloc(1024) + 1024;
TAIL_ALLOC_OBJECT_CONST_PTR(kernel_old_timespec_t, ts);
const unsigned int sigset_size = get_sigset_size();
void *const sigmask = tail_alloc(sigset_size);
struct pollfd *fds;
sigset_t mask;
int pipe_fd[4];
long rc;
sys_ppoll(0, bogus_nfds, 0, 0, bogus_sigsetsize);
if (ENOSYS == errno)
perror_msg_and_skip("ppoll");
# if !PATH_TRACING_FD && !TRACING_FDS
printf("ppoll(NULL, %u, NULL, NULL, %llu) = %s\n",
(unsigned) bogus_nfds, (unsigned long long) bogus_sigsetsize,
errstr);
# endif
sys_ppoll((unsigned long) efault, 42, (unsigned long) efault + 8,
(unsigned long) efault + 16, sigset_size);
# if !PATH_TRACING_FD && !TRACING_FDS
printf("ppoll(%p, %u, %p, %p, %u) = %s\n",
efault, 42, efault + 8, efault + 16, sigset_size, errstr);
# endif
ts->tv_sec = 0xdeadbeefU;
ts->tv_nsec = 0xfacefeedU;
sys_ppoll(0, 0, (unsigned long) ts, 0, sigset_size);
# if !PATH_TRACING_FD && !TRACING_FDS
printf("ppoll(NULL, 0, {tv_sec=%lld, tv_nsec=%llu}, NULL, %u) = %s\n",
(long long) ts->tv_sec, zero_extend_signed_to_ull(ts->tv_nsec),
sigset_size, errstr);
# endif
ts->tv_sec = (typeof(ts->tv_sec)) 0xcafef00ddeadbeefLL;
ts->tv_nsec = (long) 0xbadc0dedfacefeedL;
sys_ppoll(0, 0, (unsigned long) ts, 0, sigset_size);
# if !PATH_TRACING_FD && !TRACING_FDS
printf("ppoll(NULL, 0, {tv_sec=%lld, tv_nsec=%llu}, NULL, %u) = %s\n",
(long long) ts->tv_sec, zero_extend_signed_to_ull(ts->tv_nsec),
sigset_size, errstr);
# endif
if (pipe(pipe_fd) || pipe(pipe_fd + 2))
perror_msg_and_fail("pipe");
# if TRACING_FD1
if (dup2(pipe_fd[3], TRACING_FD1) < 0)
perror_msg_and_fail("dup2 1");
close(pipe_fd[3]);
pipe_fd[3] = TRACING_FD1;
# endif
# if TRACING_FD2
if (dup2(pipe_fd[1], TRACING_FD2) < 0)
perror_msg_and_fail("dup2 2");
close(pipe_fd[1]);
pipe_fd[1] = TRACING_FD2;
# endif
ts->tv_sec = 42;
ts->tv_nsec = 999999999;
const struct pollfd fds1[] = {
{ .fd = pipe_fd[0], .events = POLLIN | POLLPRI | POLLRDNORM | POLLRDBAND },
{ .fd = pipe_fd[1], .events = POLLOUT | POLLWRNORM | POLLWRBAND },
{ .fd = pipe_fd[2], .events = POLLIN | POLLPRI },
{ .fd = pipe_fd[3], .events = POLLOUT }
};
fds = efault - sizeof(fds1);
memcpy(fds, fds1, sizeof(fds1));
sigemptyset(&mask);
sigaddset(&mask, SIGUSR2);
sigaddset(&mask, SIGCHLD);
memcpy(sigmask, &mask, sigset_size);
rc = sys_ppoll((unsigned long) fds,
F8ILL_KULONG_MASK | ARRAY_SIZE(fds1), (unsigned long) ts,
(unsigned long) sigmask, sigset_size);
if (rc != 2)
perror_msg_and_fail("ppoll 1");
# if TRACE_FD1 || TRACE_FD2 || TRACE_OTHER_FDS
printf("ppoll([{fd=%d, events=POLLIN|POLLPRI|POLLRDNORM|POLLRDBAND}"
", {fd=%d, events=POLLOUT%s|POLLWRBAND}"
# if VERBOSE
", {fd=%d, events=POLLIN|POLLPRI}, {fd=%d, events=POLLOUT}]"
# else
", ...]"
# endif
", %u, {tv_sec=42, tv_nsec=999999999}, [%s], %u) = %ld"
" ([{fd=%d, revents=POLLOUT%s}, {fd=%d, revents=POLLOUT}]"
", left {tv_sec=%u, tv_nsec=%u})\n",
pipe_fd[0], pipe_fd[1], POLLWRNORM_str,
# if VERBOSE
pipe_fd[2], pipe_fd[3],
# endif
(unsigned int) ARRAY_SIZE(fds1), USR2_CHLD_str,
(unsigned int) sigset_size, rc, pipe_fd[1], POLLWRNORM_str,
pipe_fd[3], (unsigned int) ts->tv_sec,
(unsigned int) ts->tv_nsec);
# endif /* !PATH_TRACING_FDS */
ts->tv_sec = 23;
ts->tv_nsec = 123456789;
rc = sys_ppoll((unsigned long) fds,
F8ILL_KULONG_MASK | (ARRAY_SIZE(fds1) - 2),
(unsigned long) ts,
(unsigned long) sigmask, sigset_size);
if (rc != 1)
perror_msg_and_fail("ppoll 1.5");
# if TRACE_FD2 || TRACE_OTHER_FDS
printf("ppoll([{fd=%d, events=POLLIN|POLLPRI|POLLRDNORM|POLLRDBAND}"
", {fd=%d, events=POLLOUT%s|POLLWRBAND}]"
", %u, {tv_sec=23, tv_nsec=123456789}, [%s], %u) = %ld"
" ([{fd=%d, revents=POLLOUT%s}]"
", left {tv_sec=%u, tv_nsec=%u})\n",
pipe_fd[0], pipe_fd[1], POLLWRNORM_str,
(unsigned int) ARRAY_SIZE(fds1) - 2, USR2_CHLD_str,
(unsigned int) sigset_size, rc, pipe_fd[1], POLLWRNORM_str,
(unsigned int) ts->tv_sec, (unsigned int) ts->tv_nsec);
# endif /* !PATH_TRACING_FDS */
# if PATH_TRACING_FD
ts->tv_sec = 123;
ts->tv_nsec = 987654321;
fds[3].fd = PATH_TRACING_FD;
rc = sys_ppoll((unsigned long) fds,
F8ILL_KULONG_MASK | ARRAY_SIZE(fds1), (unsigned long) ts,
(unsigned long) sigmask, sigset_size);
if (rc != 2)
perror_msg_and_fail("ppoll -P");
printf("ppoll([{fd=%d, events=POLLIN|POLLPRI|POLLRDNORM|POLLRDBAND}"
", {fd=%d, events=POLLOUT%s|POLLWRBAND}"
# if VERBOSE
", {fd=%d, events=POLLIN|POLLPRI}, {fd=%d, events=POLLOUT}]"
# else
", ...]"
# endif
", %u, {tv_sec=123, tv_nsec=987654321}, [%s], %u) = %ld"
" ([{fd=%d, revents=POLLOUT%s}, {fd=%d, revents=POLLOUT}]"
", left {tv_sec=%u, tv_nsec=%u})\n",
pipe_fd[0], pipe_fd[1], POLLWRNORM_str,
# if VERBOSE
pipe_fd[2], PATH_TRACING_FD,
# endif
(unsigned int) ARRAY_SIZE(fds1), USR2_CHLD_str,
(unsigned int) sigset_size, rc, pipe_fd[1], POLLWRNORM_str,
PATH_TRACING_FD, (unsigned int) ts->tv_sec,
(unsigned int) ts->tv_nsec);
# endif /* PATH_TRACING_FD */
ts->tv_sec = 0;
ts->tv_nsec = 999;
const struct pollfd fds2[] = {
{ .fd = pipe_fd[1], .events = POLLIN | POLLPRI | POLLRDNORM | POLLRDBAND },
{ .fd = pipe_fd[0], .events = POLLOUT | POLLWRNORM | POLLWRBAND }
};
fds = efault - sizeof(fds2);
memcpy(fds, fds2, sizeof(fds2));
memset(&mask, -1, sizeof(mask));
sigdelset(&mask, SIGHUP);
sigdelset(&mask, SIGKILL);
sigdelset(&mask, SIGSTOP);
memcpy(sigmask, &mask, sigset_size);
rc = sys_ppoll((unsigned long) fds,
F8ILL_KULONG_MASK | ARRAY_SIZE(fds2), (unsigned long) ts,
(unsigned long) sigmask, sigset_size);
if (rc != 0)
perror_msg_and_fail("ppoll 2");
# if TRACE_FD2 || TRACE_OTHER_FDS
printf("ppoll([{fd=%d, events=POLLIN|POLLPRI|POLLRDNORM|POLLRDBAND}"
", {fd=%d, events=POLLOUT%s|POLLWRBAND}], %u"
", {tv_sec=0, tv_nsec=999}, ~[HUP KILL STOP], %u)"
" = %ld (Timeout)\n",
pipe_fd[1], pipe_fd[0], POLLWRNORM_str,
(unsigned) ARRAY_SIZE(fds2), sigset_size, rc);
# endif /* !PATH_TRACING_FD */
ts->tv_sec = 0;
ts->tv_nsec = 1;
rc = sys_ppoll((unsigned long) fds,
F8ILL_KULONG_MASK | 1, (unsigned long) ts,
(unsigned long) sigmask, sigset_size);
if (rc != 0)
perror_msg_and_fail("ppoll 2");
# if !PATH_TRACING_FD && TRACE_FD2
printf("ppoll([{fd=%d, events=POLLIN|POLLPRI|POLLRDNORM|POLLRDBAND}], 1"
", {tv_sec=0, tv_nsec=1}, ~[HUP KILL STOP], %u)"
" = %ld (Timeout)\n",
pipe_fd[1], sigset_size, rc);
# endif /* !PATH_TRACING_FD */
if (F8ILL_KULONG_SUPPORTED) {
sys_ppoll(f8ill_ptr_to_kulong(fds), ARRAY_SIZE(fds2),
f8ill_ptr_to_kulong(ts), f8ill_ptr_to_kulong(sigmask),
sigset_size);
# if !PATH_TRACING_FD && !TRACING_FDS
printf("ppoll(%#llx, %u, %#llx, %#llx, %u) = %s\n",
(unsigned long long) f8ill_ptr_to_kulong(fds),
(unsigned) ARRAY_SIZE(fds2),
(unsigned long long) f8ill_ptr_to_kulong(ts),
(unsigned long long) f8ill_ptr_to_kulong(sigmask),
(unsigned) sigset_size, errstr);
# endif /* !PATH_TRACING_FD */
}
puts("+++ exited with 0 +++");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("__NR_ppoll")
#endif
|
