tests/lib/libc/sys/t_truncate.c

   1 /* $NetBSD: t_truncate.c,v 1.2 2011/08/18 19:48:03 dholland Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2011 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jukka Ruohonen.
   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 #include <sys/cdefs.h>
  32 __RCSID("$NetBSD: t_truncate.c,v 1.2 2011/08/18 19:48:03 dholland Exp $");
  33
  34 #include <sys/stat.h>
  35
  36 #include <atf-c.h>
  37 #include <errno.h>
  38 #include <fcntl.h>
  39 #include <stdio.h>
  40 #include <string.h>
  41 #include <unistd.h>
  42
  43 static const char path[] = "truncate";
  44 static const size_t sizes[] = { 8, 16, 512, 1024, 2048, 4094, 3000, 30 };
  45
  46 ATF_TC_WITH_CLEANUP(ftruncate_basic);
  47 ATF_TC_HEAD(ftruncate_basic, tc)
  48 {
  49         atf_tc_set_md_var(tc, "descr", "A basic test of ftruncate(2)");
  50 }
  51
  52 ATF_TC_BODY(ftruncate_basic, tc)
  53 {
  54         struct stat st;
  55         size_t i;
  56         int fd;
  57
  58         fd = open(path, O_RDWR | O_CREAT, 0600);
  59         ATF_REQUIRE(fd >= 0);
  60
  61         for (i = 0; i < __arraycount(sizes); i++) {
  62
  63                 (void)memset(&st, 0, sizeof(struct stat));
  64
  65                 ATF_REQUIRE(ftruncate(fd, sizes[i]) == 0);
  66                 ATF_REQUIRE(fstat(fd, &st) == 0);
  67
  68                 (void)fprintf(stderr, "truncating to %zu bytes\n", sizes[i]);
  69
  70                 if (sizes[i] != (size_t)st.st_size)
  71                         atf_tc_fail("ftruncate(2) did not truncate");
  72         }
  73
  74         (void)close(fd);
  75         (void)unlink(path);
  76 }
  77
  78 ATF_TC_CLEANUP(ftruncate_basic, tc)
  79 {
  80         (void)unlink(path);
  81 }
  82
  83 ATF_TC(ftruncate_err);
  84 ATF_TC_HEAD(ftruncate_err, tc)
  85 {
  86         atf_tc_set_md_var(tc, "descr", "Test errors from ftruncate(2)");
  87         atf_tc_set_md_var(tc, "require.user", "unprivileged");
  88 }
  89
  90 ATF_TC_BODY(ftruncate_err, tc)
  91 {
  92         int fd;
  93
  94         fd = open("/etc/passwd", O_RDONLY, 0400);
  95         ATF_REQUIRE(fd >= 0);
  96
  97         errno = 0;
  98         ATF_REQUIRE_ERRNO(EBADF, ftruncate(-1, 999) == -1);
  99
 100         errno = 0;
 101         ATF_REQUIRE_ERRNO(EINVAL, ftruncate(fd, 999) == -1);
 102
 103         (void)close(fd);
 104 }
 105
 106 ATF_TC_WITH_CLEANUP(truncate_basic);
 107 ATF_TC_HEAD(truncate_basic, tc)
 108 {
 109         atf_tc_set_md_var(tc, "descr", "A basic test of truncate(2)");
 110 }
 111
 112 ATF_TC_BODY(truncate_basic, tc)
 113 {
 114         struct stat st;
 115         size_t i;
 116         int fd;
 117
 118         fd = open(path, O_RDWR | O_CREAT, 0600);
 119         ATF_REQUIRE(fd >= 0);
 120
 121         for (i = 0; i < __arraycount(sizes); i++) {
 122
 123                 (void)memset(&st, 0, sizeof(struct stat));
 124
 125                 ATF_REQUIRE(truncate(path, sizes[i]) == 0);
 126                 ATF_REQUIRE(fstat(fd, &st) == 0);
 127
 128                 (void)fprintf(stderr, "truncating to %zu bytes\n", sizes[i]);
 129
 130                 if (sizes[i] != (size_t)st.st_size)
 131                         atf_tc_fail("truncate(2) did not truncate");
 132         }
 133
 134         (void)close(fd);
 135         (void)unlink(path);
 136 }
 137
 138 ATF_TC_CLEANUP(truncate_basic, tc)
 139 {
 140         (void)unlink(path);
 141 }
 142
 143 ATF_TC(truncate_err);
 144 ATF_TC_HEAD(truncate_err, tc)
 145 {
 146         atf_tc_set_md_var(tc, "descr", "Test errors from truncate(2)");
 147         atf_tc_set_md_var(tc, "require.user", "unprivileged");
 148 }
 149
 150 ATF_TC_BODY(truncate_err, tc)
 151 {
 152
 153         errno = 0;
 154         ATF_REQUIRE_ERRNO(EFAULT, truncate((void *)-1, 999) == -1);
 155
 156         errno = 0;
 157         ATF_REQUIRE_ERRNO(EISDIR, truncate("/etc", 999) == -1);
 158
 159         errno = 0;
 160         ATF_REQUIRE_ERRNO(ENOENT, truncate("/a/b/c/d/e/f/g", 999) == -1);
 161
 162         errno = 0;
 163         ATF_REQUIRE_ERRNO(EACCES, truncate("/usr/bin/fpr", 999) == -1);
 164 }
 165
 166 ATF_TP_ADD_TCS(tp)
 167 {
 168
 169         ATF_TP_ADD_TC(tp, ftruncate_basic);
 170         ATF_TP_ADD_TC(tp, ftruncate_err);
 171         ATF_TP_ADD_TC(tp, truncate_basic);
 172         ATF_TP_ADD_TC(tp, truncate_err);
 173
 174         return atf_no_error();
 175 }