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/*
* Check SIGCHLD siginfo_t decoding.
*
* Copyright (c) 2015-2018 Dmitry V. Levin <ldv@strace.io>
* Copyright (c) 2016-2022 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <assert.h>
#include <signal.h>
#include <string.h>
#include <unistd.h>
#include <sys/wait.h>
#include "time_enjoyment.h"
enum {
CPUTIME_LIMIT_NSEC = 100000000,
};
static siginfo_t sinfo;
static void
handler(int no, siginfo_t *si, void *uc)
{
memcpy(&sinfo, si, sizeof(sinfo));
}
int
main(void)
{
char utime_str[64];
char stime_str[64];
tprintf("%s", "");
int fds[2];
if (pipe(fds))
perror_msg_and_fail("pipe");
pid_t pid = fork();
if (pid < 0)
perror_msg_and_fail("fork");
if (!pid) {
char c;
(void) close(1);
assert(read(0, &c, sizeof(c)) == 1);
return 42;
}
(void) close(0);
struct sigaction sa = {
.sa_sigaction = handler,
.sa_flags = SA_SIGINFO
};
assert(sigaction(SIGCHLD, &sa, NULL) == 0);
sigset_t block_mask, unblock_mask;
assert(sigprocmask(SIG_SETMASK, NULL, &block_mask) == 0);
sigaddset(&block_mask, SIGCHLD);
assert(sigprocmask(SIG_SETMASK, &block_mask, NULL) == 0);
unblock_mask = block_mask;
sigdelset(&unblock_mask, SIGCHLD);
assert(write(1, "", 1) == 1);
(void) close(1);
sigsuspend(&unblock_mask);
tprintf("--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED"
", si_pid=%d, si_uid=%d, si_status=%d"
", si_utime=%s, si_stime=%s} ---\n",
sinfo.si_pid, sinfo.si_uid, sinfo.si_status,
clock_t_str(zero_extend_signed_to_ull(sinfo.si_utime),
ARRSZ_PAIR(utime_str)),
clock_t_str(zero_extend_signed_to_ull(sinfo.si_stime),
ARRSZ_PAIR(stime_str)));
int s;
assert(wait(&s) == pid);
assert(WIFEXITED(s) && WEXITSTATUS(s) == 42);
if (pipe(fds))
perror_msg_and_fail("pipe");
pid = fork();
if (pid < 0)
perror_msg_and_fail("fork");
if (!pid) {
(void) close(1);
char c;
assert(read(0, &c, sizeof(c)) == 1);
enjoy_time(CPUTIME_LIMIT_NSEC);
(void) raise(SIGUSR1);
return 1;
}
(void) close(0);
assert(write(1, "", 1) == 1);
(void) close(1);
sigsuspend(&unblock_mask);
tprintf("--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED"
", si_pid=%d, si_uid=%d, si_status=SIGUSR1"
", si_utime=%s, si_stime=%s} ---\n",
sinfo.si_pid, sinfo.si_uid,
clock_t_str(zero_extend_signed_to_ull(sinfo.si_utime),
ARRSZ_PAIR(utime_str)),
clock_t_str(zero_extend_signed_to_ull(sinfo.si_stime),
ARRSZ_PAIR(stime_str)));
assert(wait(&s) == pid);
assert(WIFSIGNALED(s) && WTERMSIG(s) == SIGUSR1);
if (pipe(fds))
perror_msg_and_fail("pipe");
pid = fork();
if (pid < 0)
perror_msg_and_fail("fork");
if (!pid) {
(void) close(1);
enjoy_time(CPUTIME_LIMIT_NSEC);
raise(SIGSTOP);
char c;
assert(read(0, &c, sizeof(c)) == 1);
return 0;
}
(void) close(0);
sigsuspend(&unblock_mask);
tprintf("--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_STOPPED"
", si_pid=%d, si_uid=%d, si_status=SIGSTOP"
", si_utime=%s, si_stime=%s} ---\n",
sinfo.si_pid, sinfo.si_uid,
clock_t_str(zero_extend_signed_to_ull(sinfo.si_utime),
ARRSZ_PAIR(utime_str)),
clock_t_str(zero_extend_signed_to_ull(sinfo.si_stime),
ARRSZ_PAIR(stime_str)));
assert(kill(pid, SIGCONT) == 0);
sigsuspend(&unblock_mask);
tprintf("--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_CONTINUED"
", si_pid=%d, si_uid=%d, si_status=SIGCONT"
", si_utime=%s, si_stime=%s} ---\n",
sinfo.si_pid, sinfo.si_uid,
clock_t_str(zero_extend_signed_to_ull(sinfo.si_utime),
ARRSZ_PAIR(utime_str)),
clock_t_str(zero_extend_signed_to_ull(sinfo.si_stime),
ARRSZ_PAIR(stime_str)));
assert(write(1, "", 1) == 1);
(void) close(1);
sigsuspend(&unblock_mask);
tprintf("--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED"
", si_pid=%d, si_uid=%d, si_status=0"
", si_utime=%s, si_stime=%s} ---\n",
sinfo.si_pid, sinfo.si_uid,
clock_t_str(zero_extend_signed_to_ull(sinfo.si_utime),
ARRSZ_PAIR(utime_str)),
clock_t_str(zero_extend_signed_to_ull(sinfo.si_stime),
ARRSZ_PAIR(stime_str)));
assert(wait(&s) == pid && s == 0);
tprintf("%s\n", "+++ exited with 0 +++");
return 0;
}
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