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/* $FreeBSD$ */
#include <sys/poll.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <err.h>
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
static const char *
decode_events(int events)
{
char *ncresult;
const char *result;
switch (events) {
case POLLIN:
result = "POLLIN";
break;
case POLLOUT:
result = "POLLOUT";
break;
case POLLIN | POLLOUT:
result = "POLLIN | POLLOUT";
break;
case POLLHUP:
result = "POLLHUP";
break;
case POLLIN | POLLHUP:
result = "POLLIN | POLLHUP";
break;
case POLLOUT | POLLHUP:
result = "POLLOUT | POLLHUP";
break;
case POLLIN | POLLOUT | POLLHUP:
result = "POLLIN | POLLOUT | POLLHUP";
break;
default:
asprintf(&ncresult, "%#x", events);
result = ncresult;
break;
}
return (result);
}
static void
report(int num, const char *state, int expected, int got)
{
if (expected == got)
printf("ok %-2d ", num);
else
printf("not ok %-2d", num);
printf(" state %s: expected %s; got %s\n",
state, decode_events(expected), decode_events(got));
fflush(stdout);
}
static int
set_nonblocking(int sck)
{
int flags;
flags = fcntl(sck, F_GETFL, 0);
flags |= O_NONBLOCK;
if (fcntl(sck, F_SETFL, flags))
return -1;
return 0;
}
static char largeblock[1048576]; /* should be more than AF_UNIX sockbuf size */
static int fd[2];
static struct pollfd pfd0;
static struct pollfd pfd1;
void
setup(void)
{
if (socketpair(AF_UNIX, SOCK_STREAM, 0, fd) != 0)
err(1, "socketpair");
if (set_nonblocking(fd[0]) == -1)
err(1, "fcntl");
if (set_nonblocking(fd[1]) == -1)
err(1, "fcntl");
pfd0.fd = fd[0];
pfd0.events = POLLIN | POLLOUT;
pfd1.fd = fd[1];
pfd1.events = POLLIN | POLLOUT;
}
int
main(void)
{
int num;
num = 1;
printf("1..18\n");
fflush(stdout);
/* Large write with close */
setup();
if (poll(&pfd0, 1, 0) == -1)
err(1, "poll");
report(num++, "initial 0", POLLOUT, pfd0.revents);
if (poll(&pfd1, 1, 0) == -1)
err(1, "poll");
report(num++, "initial 1", POLLOUT, pfd1.revents);
if (write(fd[0], largeblock, sizeof(largeblock)) == -1)
err(1, "write");
if (poll(&pfd0, 1, 0) == -1)
err(1, "poll");
report(num++, "after large write", 0, pfd0.revents);
if (poll(&pfd1, 1, 0) == -1)
err(1, "poll");
report(num++, "other side after large write", POLLIN | POLLOUT, pfd1.revents);
close(fd[0]);
if (poll(&pfd1, 1, 0) == -1)
err(1, "poll");
report(num++, "other side after close", POLLIN | POLLHUP, pfd1.revents);
if (read(fd[1], largeblock, sizeof(largeblock)) == -1)
err(1, "read");
if (poll(&pfd1, 1, 0) == -1)
err(1, "poll");
report(num++, "other side after reading input", POLLHUP, pfd1.revents);
close(fd[1]);
/* With shutdown(SHUT_WR) */
setup();
if (shutdown(fd[0], SHUT_WR) == -1)
err(1, "shutdown");
if (poll(&pfd0, 1, 0) == -1)
err(1, "poll");
report(num++, "after shutdown(SHUT_WR)", POLLOUT, pfd0.revents);
if (poll(&pfd1, 1, 0) == -1)
err(1, "poll");
report(num++, "other side after shutdown(SHUT_WR)", POLLIN | POLLOUT, pfd1.revents);
switch (read(fd[1], largeblock, sizeof(largeblock))) {
case 0:
break;
case -1:
err(1, "read after other side shutdown");
break;
default:
errx(1, "kernel made up data that was never written");
}
if (poll(&pfd1, 1, 0) == -1)
err(1, "poll");
report(num++, "other side after reading EOF", POLLIN | POLLOUT, pfd1.revents);
if (write(fd[1], largeblock, sizeof(largeblock)) == -1)
err(1, "write");
if (poll(&pfd0, 1, 0) == -1)
err(1, "poll");
report(num++, "after data from other side", POLLIN | POLLOUT, pfd0.revents);
if (poll(&pfd1, 1, 0) == -1)
err(1, "poll");
report(num++, "after writing", POLLIN, pfd1.revents);
if (shutdown(fd[1], SHUT_WR) == -1)
err(1, "shutdown second");
if (poll(&pfd0, 1, 0) == -1)
err(1, "poll");
report(num++, "after second shutdown", POLLIN | POLLHUP, pfd0.revents);
if (poll(&pfd1, 1, 0) == -1)
err(1, "poll");
report(num++, "after second shutdown", POLLHUP, pfd1.revents);
close(fd[0]);
if (poll(&pfd1, 1, 0) == -1)
err(1, "poll");
report(num++, "after close", POLLHUP, pfd1.revents);
close(fd[1]);
/*
* With shutdown(SHUT_RD)
* Note that shutdown(SHUT_WR) is passed to the peer, but
* shutdown(SHUT_RD) is not.
*/
setup();
if (shutdown(fd[0], SHUT_RD) == -1)
err(1, "shutdown");
if (poll(&pfd0, 1, 0) == -1)
err(1, "poll");
report(num++, "after shutdown(SHUT_RD)", POLLIN | POLLOUT, pfd0.revents);
if (poll(&pfd1, 1, 0) == -1)
err(1, "poll");
report(num++, "other side after shutdown(SHUT_RD)", POLLOUT, pfd1.revents);
if (shutdown(fd[0], SHUT_WR) == -1)
err(1, "shutdown");
if (poll(&pfd0, 1, 0) == -1)
err(1, "poll");
report(num++, "after shutdown(SHUT_WR)", POLLHUP, pfd0.revents);
if (poll(&pfd1, 1, 0) == -1)
err(1, "poll");
report(num++, "other side after shutdown(SHUT_WR)", POLLIN | POLLOUT, pfd1.revents);
close(fd[0]);
close(fd[1]);
return (0);
}
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