diff options
Diffstat (limited to 'dist/lib/libc/ttyio/t_ttyio.c')
| -rw-r--r-- | dist/lib/libc/ttyio/t_ttyio.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/dist/lib/libc/ttyio/t_ttyio.c b/dist/lib/libc/ttyio/t_ttyio.c new file mode 100644 index 0000000..5a5ec0f --- /dev/null +++ b/dist/lib/libc/ttyio/t_ttyio.c @@ -0,0 +1,163 @@ +/* $NetBSD: t_ttyio.c,v 1.2 2011/04/19 20:07:53 martin Exp $ */ + +/* + * Copyright (c) 2001, 2008 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Andrew Brown. + * + * 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_ttyio.c,v 1.2 2011/04/19 20:07:53 martin Exp $"); + +#include <sys/types.h> +#include <sys/wait.h> + +#include <err.h> +#include <errno.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <termios.h> +#include <unistd.h> + +#if defined(__NetBSD__) +#include <util.h> +#elif defined(__bsdi__) +int openpty(int *, int *, char *, struct termios *, struct winsize *); +#elif defined(__FreeBSD__) +#include <libutil.h> +#else +#error where openpty? +#endif + +#include <atf-c.h> + +#define REQUIRE_ERRNO(x, v) ATF_REQUIRE_MSG(x != v, "%s: %s", #x, strerror(errno)) + +ATF_TC(ioctl); +ATF_TC_HEAD(ioctl, tc) +{ + atf_tc_set_md_var(tc, "descr", + "Checks that ioctl calls are restarted " + "properly after being interrupted"); +} + +/* ARGSUSED */ +static void +sigchld(int nsig) +{ + REQUIRE_ERRNO(wait(NULL), -1); +} + +ATF_TC_BODY(ioctl, tc) +{ + int m, s, rc; + char name[128], buf[128]; + struct termios term; + struct sigaction sa; + + /* unbuffer stdout */ + setbuf(stdout, NULL); + + /* + * Create default termios settings for later use + */ + memset(&term, 0, sizeof(term)); + term.c_iflag = TTYDEF_IFLAG; + term.c_oflag = TTYDEF_OFLAG; + term.c_cflag = TTYDEF_CFLAG; + term.c_lflag = TTYDEF_LFLAG; + cfsetspeed(&term, TTYDEF_SPEED); + + /* get a tty */ + REQUIRE_ERRNO(openpty(&m, &s, name, &term, NULL), -1); + + switch (fork()) { + case -1: + atf_tc_fail("fork(): %s", strerror(errno)); + /* NOTREACHED */ + case 0: + /* wait for parent to get set up */ + (void)sleep(1); + (void)printf("child1: exiting\n"); + exit(0); + /* NOTREACHED */ + default: + (void)printf("parent: spawned child1\n"); + break; + } + + switch (fork()) { + case -1: + atf_tc_fail("fork(): %s", strerror(errno)); + /* NOTREACHED */ + case 0: + /* wait for parent to get upset */ + (void)sleep(2); + /* drain the tty q */ + if (read(m, buf, sizeof(buf)) == -1) + err(1, "read"); + (void)printf("child2: exiting\n"); + exit(0); + /* NOTREACHED */ + default: + (void)printf("parent: spawned child2\n"); + break; + } + + /* set up a restarting signal handler */ + (void)sigemptyset(&sa.sa_mask); + sa.sa_handler = sigchld; + sa.sa_flags = SA_RESTART; + REQUIRE_ERRNO(sigaction(SIGCHLD, &sa, NULL), -1); + + /* put something in the output q */ + REQUIRE_ERRNO(write(s, "Hello world\n", 12), -1); + + /* ask for output to drain but don't drain it */ + rc = 0; + if (tcsetattr(s, TCSADRAIN, &term) == -1) { + (void)printf("parent: tcsetattr: %s\n", strerror(errno)); + rc = 1; + } + + /* wait for last child */ + sa.sa_handler = SIG_DFL; + REQUIRE_ERRNO(sigaction(SIGCHLD, &sa, NULL), -1); + (void) wait(NULL); + + ATF_REQUIRE_EQ(rc, 0); +} + +ATF_TP_ADD_TCS(tp) +{ + ATF_TP_ADD_TC(tp, ioctl); + + return atf_no_error(); +} |
