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/*
* Copyright (C) 2006-2018 Free Software Foundation, Inc.
* Copyright (C) 2018 Christoph Hellwig.
* License: LGPLv2.1 or later.
*
* Description: test aio poll and io_pgetevents signal handling.
*
* Very roughly based on glibc tst-pselect.c.
*/
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/poll.h>
#include <sys/wait.h>
#include <stdlib.h>
static volatile int handler_called;
static void
handler(int sig)
{
handler_called = 1;
}
int test_main(void)
{
struct timespec to = { .tv_sec = 0, .tv_nsec = 500000000 };
pid_t parent = getpid(), p;
int pipe1[2], pipe2[2];
struct sigaction sa = { .sa_flags = 0 };
sigset_t sigmask;
struct io_context *ctx = NULL;
struct io_event ev;
struct iocb iocb;
struct iocb *iocbs[] = { &iocb };
int ret;
sigemptyset(&sa.sa_mask);
sa.sa_handler = handler;
if (sigaction(SIGUSR1, &sa, NULL) != 0) {
printf("sigaction(1) failed\n");
return 1;
}
sa.sa_handler = SIG_IGN;
if (sigaction(SIGCHLD, &sa, NULL) != 0) {
printf("sigaction(2) failed\n");
return 1;
}
sigemptyset(&sigmask);
sigaddset(&sigmask, SIGUSR1);
if (sigprocmask(SIG_BLOCK, &sigmask, NULL) != 0) {
printf("sigprocmask failed\n");
return 1;
}
if (pipe(pipe1) != 0 || pipe(pipe2) != 0) {
printf("pipe failed\n");
return 1;
}
sigprocmask(SIG_SETMASK, NULL, &sigmask);
sigdelset(&sigmask, SIGUSR1);
p = fork();
switch (p) {
case -1:
printf("fork failed\n");
exit(2);
case 0:
close(pipe1[1]);
close(pipe2[0]);
ret = io_setup(1, &ctx);
if (ret) {
printf("child: io_setup failed: %s\n", strerror(-ret));
return 1;
}
io_prep_poll(&iocb, pipe1[0], POLLIN);
ret = io_submit(ctx, 1, iocbs);
if (ret != 1) {
/* if poll isn't supported, skip the test */
if (ret == -EINVAL)
return 3;
printf("child: io_submit failed: %s\n", strerror(-ret));
return 1;
}
do {
if (getppid() != parent) {
printf("parent died\n");
exit(2);
}
ret = io_pgetevents(ctx, 1, 1, &ev, &to, &sigmask);
} while (ret == 0);
/* SKIP if the syscall has not been implemented. */
if (ret == -ENOSYS)
return 3;
if (ret != -EINTR) {
printf("child: io_pgetevents did not set errno to "
"EINTR: %s\n", strerror(-ret));
return 1;
}
do {
errno = 0;
ret = write(pipe2[1], "foo", 3);
} while (ret == -1 && errno == EINTR);
exit(0);
default:
close(pipe1[0]);
close(pipe2[1]);
io_prep_poll(&iocb, pipe2[0], POLLIN);
ret = io_setup(1, &ctx);
if (ret) {
printf("parent: io_setup failed: %s\n", strerror(-ret));
return 1;
}
ret = io_submit(ctx, 1, iocbs);
if (ret != 1) {
/* if poll isn't supported, skip the test */
if (ret == -EINVAL)
return 3;
printf("parent: io_submit failed with %d: %s\n",
ret, strerror(-ret));
return 1;
}
kill(p, SIGUSR1);
ret = io_pgetevents(ctx, 1, 1, &ev, NULL, &sigmask);
/* SKIP if the syscall has not been implemented. */
if (ret == -ENOSYS)
return 3;
if (ret < 0) {
printf("parent: io_pgetevents failed: %s\n",
strerror(-ret));
return 1;
}
if (ret != 1) {
printf("parent: io_pgetevents did not report event\n");
return 1;
}
if (ev.obj != &iocb) {
printf("parent: io_pgetevents reports wrong fd\n");
return 1;
}
if ((ev.res & POLLIN) != POLLIN) {
printf("parent: io_pgetevents did not report readable fd\n");
return 1;
}
return 0;
}
}
/*
* Local variables:
* mode: c
* c-basic-offset: 8
* End:
*/
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