minix/tests/lib/libc/sys/t_pipe.c
Lionel Sambuc 11be35a165 Importing NetBSD "Kyua" test framework
To do so, a few dependencies have been imported:

 * external/bsd/lutok
 * external/mit/lua
 * external/public-domain/sqlite
 * external/public-domain/xz

The Kyua framework is the new generation of ATF (Automated Test
Framework), it is composed of:

 * external/bsd/atf
 * external/bsd/kyua-atf-compat
 * external/bsd/kyua-cli
 * external/bsd/kyua-tester
 * tests

Kyua/ATF being written in C++, it depends on libstdc++ which is
provided by GCC. As this is not part of the sources, Kyua is only
compiled when the native GCC utils are installed.

To install Kyua do the following:

 * In a cross-build enviromnent, add the following to the build.sh
   commandline: -V MKBINUTILS=yes -V MKGCCCMDS=yes

WARNING:
  At this point the import is still experimental, and not supported
  on native builds (a.k.a make build).

Change-Id: I26aee23c5bbd2d64adcb7c1beb98fe0d479d7ada
2013-07-23 20:43:41 +02:00

163 lines
4.4 KiB
C

/* $NetBSD: t_pipe.c,v 1.3 2011/10/31 15:41:31 christos Exp $ */
/*-
* Copyright (c) 2001, 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__COPYRIGHT("@(#) Copyright (c) 2008\
The NetBSD Foundation, inc. All rights reserved.");
__RCSID("$NetBSD: t_pipe.c,v 1.3 2011/10/31 15:41:31 christos Exp $");
#include <sys/types.h>
#include <sys/wait.h>
#include <errno.h>
#include <fcntl.h>
#include <poll.h>
#include <sched.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <atf-c.h>
#include "../../../h_macros.h"
static pid_t pid;
static int nsiginfo = 0;
/*
* This is used for both parent and child. Handle parent's SIGALRM,
* the childs SIGINFO doesn't need anything.
*/
static void
sighand(int sig)
{
if (sig == SIGALRM) {
kill(pid, SIGINFO);
}
if (sig == SIGINFO) {
nsiginfo++;
}
}
ATF_TC(pipe_restart);
ATF_TC_HEAD(pipe_restart, tc)
{
atf_tc_set_md_var(tc, "descr", "Checks that writing to pipe "
"works correctly after being interrupted and restarted "
"(kern/14087)");
}
ATF_TC_BODY(pipe_restart, tc)
{
int pp[2], st;
ssize_t sz, todo, done;
char *f;
sigset_t asigset, osigset, emptysigset;
/* Initialise signal masks */
RL(sigemptyset(&emptysigset));
RL(sigemptyset(&asigset));
RL(sigaddset(&asigset, SIGINFO));
/* Register signal handlers for both read and writer */
REQUIRE_LIBC(signal(SIGINFO, sighand), SIG_ERR);
REQUIRE_LIBC(signal(SIGALRM, sighand), SIG_ERR);
todo = 2 * 1024 * 1024;
REQUIRE_LIBC(f = malloc(todo), NULL);
RL(pipe(pp));
RL(pid = fork());
if (pid == 0) {
/* child */
RL(close(pp[1]));
/* Do inital write. This should succeed, make
* the other side do partial write and wait for us to pick
* rest up.
*/
RL(done = read(pp[0], f, 128 * 1024));
/* Wait until parent is alarmed and awakens us */
RL(sigprocmask(SIG_BLOCK, &asigset, &osigset));
while (nsiginfo == 0) {
if (sigsuspend(&emptysigset) != -1 || errno != EINTR)
atf_tc_fail("sigsuspend(&emptysigset): %s",
strerror(errno));
}
RL(sigprocmask(SIG_SETMASK, &osigset, NULL));
/* Read all what parent wants to give us */
while((sz = read(pp[0], f, 1024 * 1024)) > 0)
done += sz;
/*
* Exit with 1 if number of bytes read doesn't match
* number of expected bytes
*/
printf("Read: %#zx\n", (size_t)done);
printf("Expected: %#zx\n", (size_t)todo);
exit(done != todo);
/* NOTREACHED */
} else {
RL(close(pp[0]));
/*
* Arrange for alarm after two seconds. Since we have
* handler setup for SIGARLM, the write(2) call should
* be restarted internally by kernel.
*/
(void)alarm(2);
/* We write exactly 'todo' bytes. The very first write(2)
* should partially succeed, block and eventually
* be restarted by kernel
*/
while(todo > 0 && ((sz = write(pp[1], f, todo)) > 0))
todo -= sz;
/* Close the pipe, so that child would stop reading */
RL(close(pp[1]));
/* And pickup child's exit status */
RL(waitpid(pid, &st, 0));
ATF_REQUIRE_EQ(WEXITSTATUS(st), 0);
}
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, pipe_restart);
return atf_no_error();
}