libexec/rtld-elf/tests/ld_library_pathfds.c

   1 /*-
   2  * Copyright 2014 Jonathan Anderson.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  17  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  *
  25  * $FreeBSD$
  26  */
  27
  28 #include <atf-c.h>
  29 #include <fcntl.h>
  30 #include <stdio.h>
  31
  32
  33 struct descriptors {
  34         int     binary;
  35         int     testdir;
  36         int     root;
  37         int     etc;
  38         int     usr;
  39 };
  40
  41 static void     setup(struct descriptors *, const atf_tc_t *);
  42 static void     expect_success(int binary, char *pathfds);
  43 static void     expect_missing_library(int binary, char *pathfds);
  44
  45 static void     try_to_run(int binary, int expected_exit_status,
  46     char * const *env, const char *expected_out, const char *expected_err);
  47 static int      opendir(const char *name);
  48 static int      opendirat(int parent, const char *name);
  49
  50
  51 ATF_TC_WITHOUT_HEAD(missing_library);
  52 ATF_TC_BODY(missing_library, tc)
  53 {
  54         struct descriptors files;
  55
  56         setup(&files, tc);
  57         expect_missing_library(files.binary, NULL);
  58 }
  59
  60
  61 ATF_TC_WITHOUT_HEAD(wrong_library_directories);
  62 ATF_TC_BODY(wrong_library_directories, tc)
  63 {
  64         struct descriptors files;
  65         char *pathfds;
  66
  67         setup(&files, tc);
  68         ATF_REQUIRE(
  69                 asprintf(&pathfds, "LD_LIBRARY_PATH_FDS=%d", files.etc) > 0);
  70
  71         expect_missing_library(files.binary, pathfds);
  72 }
  73
  74
  75 ATF_TC_WITHOUT_HEAD(bad_library_directories);
  76 ATF_TC_BODY(bad_library_directories, tc)
  77 {
  78         struct descriptors files;
  79         char *pathfds;
  80
  81         setup(&files, tc);
  82         ATF_REQUIRE(asprintf(&pathfds, "LD_LIBRARY_PATH_FDS=::") > 0);
  83
  84         expect_missing_library(files.binary, pathfds);
  85 }
  86
  87
  88 ATF_TC_WITHOUT_HEAD(single_library_directory);
  89 ATF_TC_BODY(single_library_directory, tc)
  90 {
  91         struct descriptors files;
  92         char *pathfds;
  93
  94         setup(&files, tc);
  95         ATF_REQUIRE(
  96             asprintf(&pathfds, "LD_LIBRARY_PATH_FDS=%d", files.testdir) > 0);
  97
  98         expect_success(files.binary, pathfds);
  99 }
 100
 101
 102 ATF_TC_WITHOUT_HEAD(first_library_directory);
 103 ATF_TC_BODY(first_library_directory, tc)
 104 {
 105         struct descriptors files;
 106         char *pathfds;
 107
 108         setup(&files, tc);
 109         ATF_REQUIRE(
 110             asprintf(&pathfds, "LD_LIBRARY_PATH_FDS=%d:%d",
 111                 files.testdir, files.etc) > 0);
 112
 113         expect_success(files.binary, pathfds);
 114 }
 115
 116
 117 ATF_TC_WITHOUT_HEAD(middle_library_directory);
 118 ATF_TC_BODY(middle_library_directory, tc)
 119 {
 120         struct descriptors files;
 121         char *pathfds;
 122
 123         setup(&files, tc);
 124         ATF_REQUIRE(
 125             asprintf(&pathfds, "LD_LIBRARY_PATH_FDS=%d:%d:%d",
 126                 files.root, files.testdir, files.usr) > 0);
 127
 128         expect_success(files.binary, pathfds);
 129 }
 130
 131
 132 ATF_TC_WITHOUT_HEAD(last_library_directory);
 133 ATF_TC_BODY(last_library_directory, tc)
 134 {
 135         struct descriptors files;
 136         char *pathfds;
 137
 138         setup(&files, tc);
 139         ATF_REQUIRE(
 140             asprintf(&pathfds, "LD_LIBRARY_PATH_FDS=%d:%d",
 141                 files.root, files.testdir) > 0);
 142
 143         expect_success(files.binary, pathfds);
 144 }
 145
 146
 147
 148 /* Register test cases with ATF. */
 149 ATF_TP_ADD_TCS(tp)
 150 {
 151         ATF_TP_ADD_TC(tp, missing_library);
 152         ATF_TP_ADD_TC(tp, wrong_library_directories);
 153         ATF_TP_ADD_TC(tp, bad_library_directories);
 154         ATF_TP_ADD_TC(tp, single_library_directory);
 155         ATF_TP_ADD_TC(tp, first_library_directory);
 156         ATF_TP_ADD_TC(tp, middle_library_directory);
 157         ATF_TP_ADD_TC(tp, last_library_directory);
 158
 159         return atf_no_error();
 160 }
 161
 162
 163 static void
 164 setup(struct descriptors *dp, const atf_tc_t *tc)
 165 {
 166
 167         dp->testdir = opendir(atf_tc_get_config_var(tc, "srcdir"));
 168         ATF_REQUIRE(dp->testdir >= 0);
 169         ATF_REQUIRE(
 170             (dp->binary = openat(dp->testdir, "target", O_RDONLY)) >= 0);
 171
 172         ATF_REQUIRE((dp->root = opendir("/")) >= 0);
 173         ATF_REQUIRE((dp->etc = opendirat(dp->root, "etc")) >= 0);
 174         ATF_REQUIRE((dp->usr = opendirat(dp->root, "usr")) >= 0);
 175 }
 176
 177 static void
 178 expect_success(int binary, char *pathfds)
 179 {
 180         char * const env[] = { pathfds, NULL };
 181         try_to_run(binary, 0, env, "the hypotenuse of 3 and 4 is 5\n", "");
 182 }
 183
 184 static void
 185 expect_missing_library(int binary, char *pathfds)
 186 {
 187         char * const env[] = { pathfds, NULL };
 188         try_to_run(binary, 1, env, "",
 189            "ld-elf.so.1: Shared object \"libpythagoras.so.0\" not found,"
 190             " required by \"target\"\n");
 191 }
 192
 193
 194 static void
 195 try_to_run(int binary, int exit_status, char * const *env,
 196         const char *expected_out, const char *expected_err)
 197 {
 198         pid_t child = atf_utils_fork();
 199
 200         if (child == 0) {
 201                 char * const args[] = { "target", NULL };
 202
 203                 fexecve(binary, args, env);
 204                 atf_tc_fail("fexecve() failed");
 205         }
 206
 207         atf_utils_wait(child, exit_status, expected_out, expected_err);
 208 }
 209
 210
 211 static int
 212 opendir(const char *name)
 213 {
 214         return open(name, O_RDONLY | O_DIRECTORY);
 215 }
 216
 217 static int
 218 opendirat(int parent, const char *name)
 219 {
 220         return openat(parent, name, O_RDONLY | O_DIRECTORY);
 221 }