tests/lib/libc/c063/t_symlinkat.c

   1 /*      $NetBSD: t_symlinkat.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_symlinkat.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 LINK "newdir/symlink"
  51 #define BASELINK "symlink"
  52 #define FILEERR "olddir/olderr"
  53
  54 ATF_TC(symlinkat_fd);
  55 ATF_TC_HEAD(symlinkat_fd, tc)
  56 {
  57         atf_tc_set_md_var(tc, "descr", "See that symlinkat works with fd");
  58 }
  59 ATF_TC_BODY(symlinkat_fd, tc)
  60 {
  61         int dfd, fd;
  62         struct stat ost, nst;
  63
  64         ATF_REQUIRE(mkdir(ODIR, 0755) == 0);
  65         ATF_REQUIRE(mkdir(NDIR, 0755) == 0);
  66         ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
  67         ATF_REQUIRE(close(fd) != -1);
  68
  69         ATF_REQUIRE((dfd = open(NDIR, O_RDONLY, 0)) != -1);
  70         ATF_REQUIRE(symlinkat(RELFILE, dfd, BASELINK) == 0);
  71         ATF_REQUIRE(close(dfd) == 0);
  72
  73         ATF_REQUIRE(stat(FILE, &ost) == 0);
  74         ATF_REQUIRE(stat(LINK, &nst) == 0);
  75         ATF_REQUIRE(ost.st_ino == nst.st_ino);
  76 }
  77
  78 ATF_TC(symlinkat_fdcwd);
  79 ATF_TC_HEAD(symlinkat_fdcwd, tc)
  80 {
  81         atf_tc_set_md_var(tc, "descr",
  82                           "See that symlinkat works with fd as AT_FDCWD");
  83 }
  84 ATF_TC_BODY(symlinkat_fdcwd, tc)
  85 {
  86         int fd;
  87         struct stat ost, nst;
  88
  89         ATF_REQUIRE(mkdir(ODIR, 0755) == 0);
  90         ATF_REQUIRE(mkdir(NDIR, 0755) == 0);
  91         ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
  92         ATF_REQUIRE(close(fd) != -1);
  93
  94         ATF_REQUIRE(symlinkat(RELFILE, AT_FDCWD, LINK) == 0);
  95
  96         ATF_REQUIRE(stat(FILE, &ost) == 0);
  97         ATF_REQUIRE(stat(LINK, &nst) == 0);
  98         ATF_REQUIRE(ost.st_ino == nst.st_ino);
  99 }
 100
 101 ATF_TC(symlinkat_fdcwderr);
 102 ATF_TC_HEAD(symlinkat_fdcwderr, tc)
 103 {
 104         atf_tc_set_md_var(tc, "descr",
 105                   "See that symlinkat works with fd as AT_FDCWD and bad path");
 106 }
 107 ATF_TC_BODY(symlinkat_fdcwderr, tc)
 108 {
 109         int fd;
 110         struct stat st;
 111
 112         ATF_REQUIRE(mkdir(ODIR, 0755) == 0);
 113         ATF_REQUIRE(mkdir(NDIR, 0755) == 0);
 114         ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
 115         ATF_REQUIRE(close(fd) != -1);
 116
 117         ATF_REQUIRE(symlinkat(FILEERR, AT_FDCWD, LINK) == 0);
 118         ATF_REQUIRE(lstat(LINK, &st) == 0);
 119         ATF_REQUIRE(stat(LINK, &st) == -1);
 120         ATF_REQUIRE(errno == ENOENT);
 121
 122 }
 123
 124 ATF_TC(symlinkat_fderr);
 125 ATF_TC_HEAD(symlinkat_fderr, tc)
 126 {
 127         atf_tc_set_md_var(tc, "descr", "See that symlinkat fails with fd as -1");
 128 }
 129 ATF_TC_BODY(symlinkat_fderr, tc)
 130 {
 131         int fd;
 132
 133         ATF_REQUIRE(mkdir(ODIR, 0755) == 0);
 134         ATF_REQUIRE(mkdir(NDIR, 0755) == 0);
 135         ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
 136         ATF_REQUIRE(close(fd) != -1);
 137
 138         ATF_REQUIRE(symlinkat(RELFILE, -1, LINK) == -1);
 139 }
 140
 141 ATF_TP_ADD_TCS(tp)
 142 {
 143
 144         ATF_TP_ADD_TC(tp, symlinkat_fd);
 145         ATF_TP_ADD_TC(tp, symlinkat_fdcwd);
 146         ATF_TP_ADD_TC(tp, symlinkat_fdcwderr);
 147         ATF_TP_ADD_TC(tp, symlinkat_fderr);
 148
 149         return atf_no_error();
 150 }