1/*	$NetBSD: t_popen.c,v 1.4 2013/02/15 23:27:19 christos Exp $ */
2
3/*-
4 * Copyright (c) 1999 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Matthias Scheler.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33#ifndef lint
34__COPYRIGHT("@(#) Copyright (c) 1999\
35 The NetBSD Foundation, Inc.  All rights reserved.");
36#endif /* not lint */
37
38#ifndef lint
39__RCSID("$NetBSD: t_popen.c,v 1.4 2013/02/15 23:27:19 christos Exp $");
40#endif /* not lint */
41
42#include <atf-c.h>
43
44#include <sys/param.h>
45
46#include <errno.h>
47#include <err.h>
48#include <paths.h>
49#include <stdio.h>
50#include <stdlib.h>
51#include <time.h>
52#include <unistd.h>
53
54#define _PATH_CAT	"/bin/cat"
55#define BUFSIZE		(640*1024)
56			/* 640KB ought to be enough for everyone. */
57#define DATAFILE	"popen.data"
58
59#define TEST_ERROR(a)						\
60	do							\
61	{							\
62		warn(a);					\
63		atf_tc_fail("Check stderr for error details.");	\
64	} while ( /*CONSTCOND*/ 0 )
65
66ATF_TC_WITH_CLEANUP(popen_zeropad);
67ATF_TC_HEAD(popen_zeropad, tc)
68{
69
70	atf_tc_set_md_var(tc, "descr", "output format zero padding");
71}
72
73ATF_TC_BODY(popen_zeropad, tc)
74{
75	char *buffer, command[MAXPATHLEN];
76	int idx, in;
77	FILE *my_pipe;
78
79	if ((buffer = malloc(BUFSIZE)) == NULL)
80		atf_tc_skip("Unable to allocate buffer.");
81
82	srand ((unsigned int)time(NULL));
83
84	for (idx = 0; idx < BUFSIZE; idx++)
85		buffer[idx]=(char)rand();
86
87	(void)snprintf(command, sizeof(command), "%s >%s",
88	    _PATH_CAT, DATAFILE);
89
90	if ((my_pipe = popen(command, "w")) == NULL)
91		TEST_ERROR("popen write");
92
93	if (fwrite(buffer, sizeof(char), BUFSIZE, my_pipe) != BUFSIZE)
94		TEST_ERROR("fwrite");
95
96	if (pclose(my_pipe) == -1)
97		TEST_ERROR("pclose");
98
99	(void)snprintf(command, sizeof(command), "%s %s", _PATH_CAT, DATAFILE);
100
101	if ((my_pipe = popen(command, "r")) == NULL)
102		TEST_ERROR("popen read");
103
104	idx = 0;
105	while ((in = fgetc(my_pipe)) != EOF)
106		if (idx == BUFSIZE) {
107			errno = EFBIG;
108			TEST_ERROR("read");
109		}
110		else if ((char)in != buffer[idx++]) {
111		    	errno = EINVAL;
112			TEST_ERROR("read");
113		}
114
115	if (idx < BUFSIZE) {
116		errno = EIO;
117		TEST_ERROR("read");
118	}
119
120	if (pclose(my_pipe) == -1)
121		TEST_ERROR("pclose");
122}
123
124ATF_TC_CLEANUP(popen_zeropad, tc)
125{
126	(void)unlink(DATAFILE);
127}
128
129ATF_TP_ADD_TCS(tp)
130{
131
132	ATF_TP_ADD_TC(tp, popen_zeropad);
133
134	return atf_no_error();
135}
136