tests/lib/libc/sys/t_umask.c

   1 /* $NetBSD: t_umask.c,v 1.1 2011/07/07 06:57:54 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_umask.c,v 1.1 2011/07/07 06:57:54 jruoho Exp $");
  33
  34 #include <sys/stat.h>
  35 #include <sys/wait.h>
  36
  37 #include <atf-c.h>
  38 #include <fcntl.h>
  39 #include <stdlib.h>
  40 #include <string.h>
  41 #include <unistd.h>
  42
  43 static const char path[] = "umask";
  44 static const mode_t mask[] = {
  45         S_IRWXU,
  46         S_IRUSR,
  47         S_IWUSR,
  48         S_IXUSR,
  49         S_IRWXG,
  50         S_IRGRP,
  51         S_IWGRP,
  52         S_IXGRP,
  53         S_IRWXO,
  54         S_IROTH,
  55         S_IWOTH,
  56         S_IXOTH
  57 };
  58
  59 ATF_TC_WITH_CLEANUP(umask_fork);
  60 ATF_TC_HEAD(umask_fork, tc)
  61 {
  62         atf_tc_set_md_var(tc, "descr", "Check that umask(2) is inherited");
  63 }
  64
  65 ATF_TC_BODY(umask_fork, tc)
  66 {
  67         mode_t mode;
  68         pid_t pid;
  69         size_t i;
  70         int sta;
  71
  72         for (i = 0; i < __arraycount(mask) - 1; i++) {
  73
  74                 (void)umask(mask[i] | mask[i + 1]);
  75
  76                 pid = fork();
  77
  78                 if (pid < 0)
  79                         continue;
  80
  81                 if (pid == 0) {
  82
  83                         mode = umask(mask[i]);
  84
  85                         if (mode != (mask[i] | mask[i + 1]))
  86                                 _exit(EXIT_FAILURE);
  87
  88                         _exit(EXIT_SUCCESS);
  89                 }
  90
  91                 (void)wait(&sta);
  92
  93                 if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS)
  94                         goto fail;
  95         }
  96
  97         return;
  98
  99 fail:
 100         (void)umask(S_IWGRP | S_IWOTH);
 101
 102         atf_tc_fail("umask(2) was not inherited");
 103 }
 104
 105 ATF_TC_CLEANUP(umask_fork, tc)
 106 {
 107         (void)umask(S_IWGRP | S_IWOTH);
 108 }
 109
 110 ATF_TC_WITH_CLEANUP(umask_open);
 111 ATF_TC_HEAD(umask_open, tc)
 112 {
 113         atf_tc_set_md_var(tc, "descr", "A basic test of open(2) and umask(2)");
 114 }
 115
 116 ATF_TC_BODY(umask_open, tc)
 117 {
 118         const char *str = NULL;
 119         struct stat st;
 120         size_t i;
 121         int fd;
 122
 123         for (i = 0; i < __arraycount(mask); i++) {
 124
 125                 (void)umask(mask[i]);
 126
 127                 fd = open(path, O_RDWR | O_CREAT, 0777);
 128
 129                 if (fd < 0)
 130                         continue;
 131
 132                 (void)memset(&st, 0, sizeof(struct stat));
 133
 134                 if (stat(path, &st) != 0) {
 135                         str = "failed to stat(2)";
 136                         goto out;
 137                 }
 138
 139                 if ((st.st_mode & mask[i]) != 0) {
 140                         str = "invalid umask(2)";
 141                         goto out;
 142                 }
 143
 144                 if (unlink(path) != 0) {
 145                         str = "failed to unlink(2)";
 146                         goto out;
 147                 }
 148
 149         }
 150
 151 out:
 152         (void)umask(S_IWGRP | S_IWOTH);
 153
 154         if (str != NULL)
 155                 atf_tc_fail("%s", str);
 156 }
 157
 158 ATF_TC_CLEANUP(umask_open, tc)
 159 {
 160         (void)umask(S_IWGRP | S_IWOTH);
 161         (void)unlink(path);
 162 }
 163
 164 ATF_TC_WITH_CLEANUP(umask_previous);
 165 ATF_TC_HEAD(umask_previous, tc)
 166 {
 167         atf_tc_set_md_var(tc, "descr", "Test the return value from umask(2)");
 168 }
 169
 170 ATF_TC_BODY(umask_previous, tc)
 171 {
 172         mode_t mode;
 173         size_t i;
 174
 175         for (i = 0; i < __arraycount(mask); i++) {
 176
 177                 mode = umask(mask[i]);
 178                 mode = umask(mask[i]);
 179
 180                 if (mode != mask[i])
 181                         goto fail;
 182         }
 183
 184         return;
 185
 186 fail:
 187         (void)umask(S_IWGRP | S_IWOTH);
 188
 189         atf_tc_fail("umask(2) did not return the previous mask");
 190 }
 191
 192 ATF_TC_CLEANUP(umask_previous, tc)
 193 {
 194         (void)umask(S_IWGRP | S_IWOTH);
 195 }
 196
 197 ATF_TP_ADD_TCS(tp)
 198 {
 199
 200         ATF_TP_ADD_TC(tp, umask_fork);
 201         ATF_TP_ADD_TC(tp, umask_open);
 202         ATF_TP_ADD_TC(tp, umask_previous);
 203
 204         return atf_no_error();
 205 }