tests/lib/libc/sys/t_mknod.c

   1 /* $NetBSD: t_mknod.c,v 1.2 2012/03/18 07:00:52 jruoho 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_mknod.c,v 1.2 2012/03/18 07:00:52 jruoho Exp $");
  33
  34 #include <sys/stat.h>
  35
  36 #include <atf-c.h>
  37 #include <errno.h>
  38 #include <fcntl.h>
  39 #include <limits.h>
  40 #include <paths.h>
  41 #include <stdio.h>
  42 #include <string.h>
  43 #include <unistd.h>
  44
  45 static char      path[] = "node";
  46
  47 ATF_TC_WITH_CLEANUP(mknod_err);
  48 ATF_TC_HEAD(mknod_err, tc)
  49 {
  50         atf_tc_set_md_var(tc, "descr",
  51             "Test error conditions of mknod(2) (PR kern/45111)");
  52         atf_tc_set_md_var(tc, "require.user", "root");
  53 }
  54
  55 ATF_TC_BODY(mknod_err, tc)
  56 {
  57         char buf[PATH_MAX + 1];
  58
  59         (void)memset(buf, 'x', sizeof(buf));
  60
  61         errno = 0;
  62         ATF_REQUIRE_ERRNO(EINVAL, mknod(path, S_IFCHR, -1) == -1);
  63
  64         errno = 0;
  65         ATF_REQUIRE_ERRNO(ENAMETOOLONG, mknod(buf, S_IFCHR, 0) == -1);
  66
  67         errno = 0;
  68         ATF_REQUIRE_ERRNO(EFAULT, mknod((char *)-1, S_IFCHR, 0) == -1);
  69
  70         errno = 0;
  71         ATF_REQUIRE_ERRNO(ENOENT, mknod("/a/b/c/d/e/f/g", S_IFCHR, 0) == -1);
  72 }
  73
  74 ATF_TC_CLEANUP(mknod_err, tc)
  75 {
  76         (void)unlink(path);
  77 }
  78
  79 ATF_TC_WITH_CLEANUP(mknod_exist);
  80 ATF_TC_HEAD(mknod_exist, tc)
  81 {
  82         atf_tc_set_md_var(tc, "descr", "Test EEXIST from mknod(2)");
  83         atf_tc_set_md_var(tc, "require.user", "root");
  84 }
  85
  86 ATF_TC_BODY(mknod_exist, tc)
  87 {
  88         int fd;
  89
  90         fd = open("/etc/passwd", O_RDONLY);
  91
  92         if (fd >= 0) {
  93
  94                 (void)close(fd);
  95
  96                 errno = 0;
  97                 ATF_REQUIRE_ERRNO(EEXIST,
  98                     mknod("/etc/passwd", S_IFCHR, 0) == -1);
  99         }
 100
 101         ATF_REQUIRE(mknod(path, S_IFCHR, 0) == 0);
 102
 103         errno = 0;
 104         ATF_REQUIRE_ERRNO(EEXIST, mknod(path, S_IFCHR, 0) == -1);
 105
 106         ATF_REQUIRE(unlink(path) == 0);
 107 }
 108
 109 ATF_TC_CLEANUP(mknod_exist, tc)
 110 {
 111         (void)unlink(path);
 112 }
 113
 114 ATF_TC_WITH_CLEANUP(mknod_perm);
 115 ATF_TC_HEAD(mknod_perm, tc)
 116 {
 117         atf_tc_set_md_var(tc, "descr", "Test permissions of mknod(2)");
 118         atf_tc_set_md_var(tc, "require.user", "unprivileged");
 119 }
 120
 121 ATF_TC_BODY(mknod_perm, tc)
 122 {
 123
 124         errno = 0;
 125         ATF_REQUIRE_ERRNO(EPERM, mknod(path, S_IFCHR, 0) == -1);
 126
 127         errno = 0;
 128         ATF_REQUIRE_ERRNO(EPERM, mknod(path, S_IFBLK, 0) == -1);
 129 }
 130
 131 ATF_TC_CLEANUP(mknod_perm, tc)
 132 {
 133         (void)unlink(path);
 134 }
 135
 136 ATF_TC_WITH_CLEANUP(mknod_stat);
 137 ATF_TC_HEAD(mknod_stat, tc)
 138 {
 139         atf_tc_set_md_var(tc, "descr", "A basic test of mknod(2)");
 140         atf_tc_set_md_var(tc, "require.user", "root");
 141 }
 142
 143 ATF_TC_BODY(mknod_stat, tc)
 144 {
 145         struct stat st;
 146
 147         (void)memset(&st, 0, sizeof(struct stat));
 148
 149         ATF_REQUIRE(mknod(path, S_IFCHR, 0) == 0);
 150         ATF_REQUIRE(stat(path, &st) == 0);
 151
 152         if (S_ISCHR(st.st_mode) == 0)
 153                 atf_tc_fail_nonfatal("invalid mode from mknod(2) (S_IFCHR)");
 154
 155         ATF_REQUIRE(unlink(path) == 0);
 156
 157         (void)memset(&st, 0, sizeof(struct stat));
 158
 159         ATF_REQUIRE(mknod(path, S_IFBLK, 0) == 0);
 160         ATF_REQUIRE(stat(path, &st) == 0);
 161
 162         if (S_ISBLK(st.st_mode) == 0)
 163                 atf_tc_fail_nonfatal("invalid mode from mknod(2) (S_IFBLK)");
 164
 165         ATF_REQUIRE(unlink(path) == 0);
 166
 167         (void)memset(&st, 0, sizeof(struct stat));
 168
 169         ATF_REQUIRE(mknod(path, S_IFREG, 0) == 0);
 170         ATF_REQUIRE(stat(path, &st) == 0);
 171
 172         if (S_ISREG(st.st_mode) == 0)
 173                 atf_tc_fail_nonfatal("invalid mode from mknod(2) (S_IFREG)");
 174
 175         ATF_REQUIRE(unlink(path) == 0);
 176 }
 177
 178 ATF_TC_CLEANUP(mknod_stat, tc)
 179 {
 180         (void)unlink(path);
 181 }
 182
 183 ATF_TP_ADD_TCS(tp)
 184 {
 185
 186         ATF_TP_ADD_TC(tp, mknod_err);
 187         ATF_TP_ADD_TC(tp, mknod_exist);
 188         ATF_TP_ADD_TC(tp, mknod_perm);
 189         ATF_TP_ADD_TC(tp, mknod_stat);
 190
 191         return atf_no_error();
 192 }