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      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 
     66 ATF_TC_WITH_CLEANUP(popen_zeropad);
     67 ATF_TC_HEAD(popen_zeropad, tc)
     68 {
     69 
     70 	atf_tc_set_md_var(tc, "descr", "output format zero padding");
     71 }
     72 
     73 ATF_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 
    124 ATF_TC_CLEANUP(popen_zeropad, tc)
    125 {
    126 	(void)unlink(DATAFILE);
    127 }
    128 
    129 ATF_TP_ADD_TCS(tp)
    130 {
    131 
    132 	ATF_TP_ADD_TC(tp, popen_zeropad);
    133 
    134 	return atf_no_error();
    135 }
    136