tests/lib/libc/stdio/t_popen.c

   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 }