tests/lib/libc/gen/t_realpath.c

   1 /* $NetBSD: t_realpath.c,v 1.2 2012/03/27 07:54:58 njoly 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 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_realpath.c,v 1.2 2012/03/27 07:54:58 njoly Exp $");
  33
  34 #include <sys/param.h>
  35
  36 #include <atf-c.h>
  37 #include <fcntl.h>
  38 #include <stdio.h>
  39 #include <stdlib.h>
  40 #include <string.h>
  41 #include <unistd.h>
  42
  43 static const struct {
  44         const char *path;
  45         const char *result;
  46 } paths[] = {
  47
  48         { "/",                  "/"             },
  49         { "///////",            "/"             },
  50         { "",                   NULL            },
  51         { "       ",            NULL            },
  52         { "/      ",            NULL            },
  53         { "      /",            NULL            },
  54         { "/etc///",            "/etc"          },
  55         { "///////etc",         "/etc"          },
  56         { "/a/b/c/d/e",         NULL            },
  57         { "    /usr/bin    ",   NULL            },
  58         { "\\//////usr//bin",   NULL            },
  59         { "//usr//bin//",       "/usr/bin"      },
  60         { "//////usr//bin//",   "/usr/bin"      },
  61         { "/usr/bin//////////", "/usr/bin"      },
  62 };
  63
  64 ATF_TC(realpath_basic);
  65 ATF_TC_HEAD(realpath_basic, tc)
  66 {
  67         atf_tc_set_md_var(tc, "descr", "A basic test of realpath(3)");
  68 }
  69
  70 ATF_TC_BODY(realpath_basic, tc)
  71 {
  72         char buf[MAXPATHLEN];
  73         char *ptr;
  74         size_t i;
  75
  76         for (i = 0; i < __arraycount(paths); i++) {
  77
  78                 (void)memset(buf, '\0', sizeof(buf));
  79
  80                 ptr = realpath(paths[i].path, buf);
  81
  82                 if (ptr == NULL && paths[i].result == NULL)
  83                         continue;
  84
  85                 if (ptr == NULL && paths[i].result != NULL)
  86                         atf_tc_fail("realpath failed for '%s'", paths[i].path);
  87
  88                 if (strcmp(paths[i].result, buf) != 0)
  89                         atf_tc_fail("expected '%s', got '%s'",
  90                             paths[i].result, buf);
  91         }
  92 }
  93
  94 ATF_TC(realpath_huge);
  95 ATF_TC_HEAD(realpath_huge, tc)
  96 {
  97         atf_tc_set_md_var(tc, "descr", "Test huge path with realpath(3)");
  98 }
  99
 100 ATF_TC_BODY(realpath_huge, tc)
 101 {
 102         char result[MAXPATHLEN] = { 0 };
 103         char buffer[MAXPATHLEN] = { 0 };
 104
 105         (void)memset(buffer, '/', sizeof(buffer) - 1);
 106
 107         ATF_CHECK(realpath(buffer, result) != NULL);
 108         ATF_CHECK(strlen(result) == 1);
 109         ATF_CHECK(result[0] == '/');
 110 }
 111
 112 ATF_TC(realpath_symlink);
 113 ATF_TC_HEAD(realpath_symlink, tc)
 114 {
 115         atf_tc_set_md_var(tc, "descr", "Test symbolic link with realpath(3)");
 116 }
 117
 118 ATF_TC_BODY(realpath_symlink, tc)
 119 {
 120         char path[MAXPATHLEN] = { 0 };
 121         char slnk[MAXPATHLEN] = { 0 };
 122         char resb[MAXPATHLEN] = { 0 };
 123         int fd;
 124
 125         (void)getcwd(path, sizeof(path));
 126         (void)getcwd(slnk, sizeof(slnk));
 127
 128         (void)strlcat(path, "/realpath", sizeof(path));
 129         (void)strlcat(slnk, "/symbolic", sizeof(slnk));
 130
 131         fd = open(path, O_RDONLY | O_CREAT, 0600);
 132
 133         ATF_REQUIRE(fd >= 0);
 134         ATF_REQUIRE(symlink(path, slnk) == 0);
 135         ATF_REQUIRE(close(fd) == 0);
 136
 137         ATF_REQUIRE(realpath(slnk, resb) != NULL);
 138         ATF_REQUIRE(strcmp(resb, path) == 0);
 139
 140         ATF_REQUIRE(unlink(path) == 0);
 141         ATF_REQUIRE(unlink(slnk) == 0);
 142 }
 143
 144 ATF_TP_ADD_TCS(tp)
 145 {
 146
 147         ATF_TP_ADD_TC(tp, realpath_basic);
 148         ATF_TP_ADD_TC(tp, realpath_huge);
 149         ATF_TP_ADD_TC(tp, realpath_symlink);
 150
 151         return atf_no_error();
 152 }