tests/lib/libc/c063/t_linkat.c

   1 /*      $NetBSD: t_linkat.c,v 1.2 2013/03/17 04:46:06 jmmv Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2012 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Emmanuel Dreyfus.
   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_linkat.c,v 1.2 2013/03/17 04:46:06 jmmv Exp $");
  33
  34 #include <atf-c.h>
  35 #include <errno.h>
  36 #include <fcntl.h>
  37 #include <limits.h>
  38 #include <paths.h>
  39 #include <stdio.h>
  40 #include <string.h>
  41 #include <unistd.h>
  42 #include <sys/param.h>
  43 #include <sys/stat.h>
  44
  45 #define ODIR "olddir"
  46 #define NDIR "newdir"
  47 #define FILE "olddir/old"
  48 #define BASEFILE "old"
  49 #define RELFILE "../olddir/old"
  50 #define TARGET "newdir/new"
  51 #define BASETARGET "new"
  52 #define LINK "olddir/symlink"
  53 #define BASELINK "symlink"
  54 #define FILEERR "olddir/olderr"
  55
  56 ATF_TC(linkat_fd);
  57 ATF_TC_HEAD(linkat_fd, tc)
  58 {
  59         atf_tc_set_md_var(tc, "descr", "See that linkat works with fd");
  60 }
  61 ATF_TC_BODY(linkat_fd, tc)
  62 {
  63         int ofd, nfd, fd;
  64         struct stat ost, nst;
  65
  66         ATF_REQUIRE(mkdir(ODIR, 0755) == 0);
  67         ATF_REQUIRE(mkdir(NDIR, 0755) == 0);
  68         ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
  69         ATF_REQUIRE(close(fd) != -1);
  70
  71         ATF_REQUIRE((ofd = open(ODIR, O_RDONLY, 0)) != -1);
  72         ATF_REQUIRE((nfd = open(NDIR, O_RDONLY, 0)) != -1);
  73         ATF_REQUIRE(linkat(ofd, BASEFILE, nfd, BASETARGET, 0) == 0);
  74         ATF_REQUIRE(close(ofd) == 0);
  75         ATF_REQUIRE(close(nfd) == 0);
  76
  77         ATF_REQUIRE(stat(FILE, &ost) == 0);
  78         ATF_REQUIRE(stat(TARGET, &nst) == 0);
  79         ATF_REQUIRE(ost.st_ino == nst.st_ino);
  80 }
  81
  82 ATF_TC(linkat_fdcwd);
  83 ATF_TC_HEAD(linkat_fdcwd, tc)
  84 {
  85         atf_tc_set_md_var(tc, "descr",
  86                           "See that linkat works with fd as AT_FDCWD");
  87 }
  88 ATF_TC_BODY(linkat_fdcwd, tc)
  89 {
  90         int fd;
  91         struct stat ost, nst;
  92
  93         ATF_REQUIRE(mkdir(ODIR, 0755) == 0);
  94         ATF_REQUIRE(mkdir(NDIR, 0755) == 0);
  95         ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
  96         ATF_REQUIRE(close(fd) != -1);
  97
  98         ATF_REQUIRE(linkat(AT_FDCWD, FILE, AT_FDCWD, TARGET, 0) == 0);
  99
 100         ATF_REQUIRE(stat(FILE, &ost) == 0);
 101         ATF_REQUIRE(stat(TARGET, &nst) == 0);
 102         ATF_REQUIRE(ost.st_ino == nst.st_ino);
 103 }
 104
 105 ATF_TC(linkat_fdcwderr);
 106 ATF_TC_HEAD(linkat_fdcwderr, tc)
 107 {
 108         atf_tc_set_md_var(tc, "descr",
 109                   "See that linkat fails with fd as AT_FDCWD and bad path");
 110 }
 111 ATF_TC_BODY(linkat_fdcwderr, tc)
 112 {
 113         int fd;
 114
 115         ATF_REQUIRE(mkdir(ODIR, 0755) == 0);
 116         ATF_REQUIRE(mkdir(NDIR, 0755) == 0);
 117         ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
 118         ATF_REQUIRE(close(fd) != -1);
 119
 120         ATF_REQUIRE(linkat(AT_FDCWD, FILEERR, AT_FDCWD, TARGET, 0) == -1);
 121 }
 122
 123 ATF_TC(linkat_fderr);
 124 ATF_TC_HEAD(linkat_fderr, tc)
 125 {
 126         atf_tc_set_md_var(tc, "descr", "See that linkat fails with fd as -1");
 127 }
 128 ATF_TC_BODY(linkat_fderr, tc)
 129 {
 130         int fd;
 131
 132         ATF_REQUIRE(mkdir(ODIR, 0755) == 0);
 133         ATF_REQUIRE(mkdir(NDIR, 0755) == 0);
 134         ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
 135         ATF_REQUIRE(close(fd) != -1);
 136
 137         ATF_REQUIRE(linkat(-1, FILE, AT_FDCWD, TARGET, 0) == -1);
 138         ATF_REQUIRE(linkat(AT_FDCWD, FILE, -1, TARGET, 0) == -1);
 139         ATF_REQUIRE(linkat(-1, FILE, -1, TARGET, 0) == -1);
 140 }
 141
 142 ATF_TC(linkat_fdlink1);
 143 ATF_TC_HEAD(linkat_fdlink1, tc)
 144 {
 145         atf_tc_set_md_var(tc, "descr", "See that linkat works on symlink target");
 146 }
 147 ATF_TC_BODY(linkat_fdlink1, tc)
 148 {
 149         int ofd, nfd, fd;
 150         struct stat ost, nst;
 151
 152         ATF_REQUIRE(mkdir(ODIR, 0755) == 0);
 153         ATF_REQUIRE(mkdir(NDIR, 0755) == 0);
 154         ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
 155         ATF_REQUIRE(close(fd) != -1);
 156         ATF_REQUIRE(symlink(RELFILE, LINK) == 0);
 157
 158         ATF_REQUIRE((ofd = open(ODIR, O_RDONLY, 0)) != -1);
 159         ATF_REQUIRE((nfd = open(NDIR, O_RDONLY, 0)) != -1);
 160         ATF_REQUIRE(linkat(ofd, BASELINK, nfd, BASETARGET,
 161             AT_SYMLINK_FOLLOW) == 0);
 162         ATF_REQUIRE(close(ofd) == 0);
 163         ATF_REQUIRE(close(nfd) == 0);
 164
 165         ATF_REQUIRE(lstat(LINK, &ost) == 0);
 166         ATF_REQUIRE(lstat(TARGET, &nst) == 0);
 167         ATF_REQUIRE(ost.st_ino != nst.st_ino);
 168
 169         ATF_REQUIRE(lstat(FILE, &ost) == 0);
 170         ATF_REQUIRE(lstat(TARGET, &nst) == 0);
 171         ATF_REQUIRE(ost.st_ino == nst.st_ino);
 172 }
 173
 174
 175 ATF_TC(linkat_fdlink2);
 176 ATF_TC_HEAD(linkat_fdlink2, tc)
 177 {
 178         atf_tc_set_md_var(tc, "descr", "See that linkat works on symlink source");
 179 }
 180 ATF_TC_BODY(linkat_fdlink2, tc)
 181 {
 182         int ofd, nfd, fd;
 183         struct stat ost, nst;
 184
 185         ATF_REQUIRE(mkdir(ODIR, 0755) == 0);
 186         ATF_REQUIRE(mkdir(NDIR, 0755) == 0);
 187         ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
 188         ATF_REQUIRE(close(fd) != -1);
 189         ATF_REQUIRE(symlink(RELFILE, LINK) == 0);
 190
 191         ATF_REQUIRE((ofd = open(ODIR, O_RDONLY, 0)) != -1);
 192         ATF_REQUIRE((nfd = open(NDIR, O_RDONLY, 0)) != -1);
 193         ATF_REQUIRE(linkat(ofd, BASELINK, nfd, BASETARGET, 0) == 0);
 194         ATF_REQUIRE(close(ofd) == 0);
 195         ATF_REQUIRE(close(nfd) == 0);
 196
 197         ATF_REQUIRE(lstat(LINK, &ost) == 0);
 198         ATF_REQUIRE(lstat(TARGET, &nst) == 0);
 199         ATF_REQUIRE(ost.st_ino == nst.st_ino);
 200
 201         ATF_REQUIRE(lstat(FILE, &ost) == 0);
 202         ATF_REQUIRE(lstat(TARGET, &nst) == 0);
 203         ATF_REQUIRE(ost.st_ino != nst.st_ino);
 204 }
 205
 206 ATF_TP_ADD_TCS(tp)
 207 {
 208
 209         ATF_TP_ADD_TC(tp, linkat_fd);
 210         ATF_TP_ADD_TC(tp, linkat_fdcwd);
 211         ATF_TP_ADD_TC(tp, linkat_fdcwderr);
 212         ATF_TP_ADD_TC(tp, linkat_fderr);
 213         ATF_TP_ADD_TC(tp, linkat_fdlink1);
 214         ATF_TP_ADD_TC(tp, linkat_fdlink2);
 215
 216         return atf_no_error();
 217 }