| /* Test of getcwd function. |
| Copyright (C) 2000-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <errno.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <sys/param.h> |
| |
| |
| #define TEST_FUNCTION do_test () |
| static int |
| do_test (void) |
| { |
| char thepath[4096]; /* Yes, this limits the environment this test |
| can run it but I honestly don't care about |
| people which have this problem. */ |
| char *bufs[10]; |
| size_t lens[10]; |
| size_t sbs; |
| size_t len, i; |
| |
| if (getcwd (thepath, sizeof thepath) == NULL) |
| { |
| if (errno == ERANGE) |
| /* The path is too long, skip all tests. */ |
| return 0; |
| |
| puts ("getcwd (thepath, sizeof thepath) failed"); |
| return 1; |
| } |
| len = strlen (thepath); |
| |
| sbs = 1; |
| while (sbs < len + 1) |
| sbs <<= 1; |
| |
| for (i = 0; i < 4; ++i) |
| { |
| lens[i] = sbs; |
| bufs[i] = (char *) malloc (sbs); |
| } |
| |
| bufs[i] = getcwd (NULL, sbs); |
| lens[i] = sbs; |
| if (bufs[i] == NULL) |
| { |
| puts ("getcwd (NULL, sbs) failed"); |
| return 1; |
| } |
| ++i; |
| |
| for (; i < 10; sbs >>= 1, ++i) |
| { |
| bufs[i] = (char *) malloc (MAX (1, sbs)); |
| lens[i] = sbs; |
| } |
| |
| /* Before we test the result write something in the memory to see |
| whether the allocation went right. */ |
| for (i = 0; i < 10; ++i) |
| if (i != 4 && bufs[i] != NULL) |
| memset (bufs[i], '\xff', lens[i]); |
| |
| if (strcmp (thepath, bufs[4]) != 0) |
| { |
| printf ("\ |
| getcwd (NULL, sbs) = \"%s\", getcwd (thepath, sizeof thepath) = \"%s\"\n", |
| bufs[4], thepath); |
| return 1; |
| } |
| |
| /* Now overwrite all buffers to see that getcwd allocated the buffer |
| of right size. */ |
| for (i = 0; i < 10; ++i) |
| memset (bufs[i], i, lens[i]); |
| |
| for (i = 0; i < 10; ++i) |
| free (bufs[i]); |
| |
| /* Test whether the function signals success despite the buffer |
| being too small. */ |
| if (getcwd (NULL, len) != NULL) |
| { |
| puts ("getcwd (NULL, len) didn't failed"); |
| return 1; |
| } |
| |
| bufs[0] = malloc (len); |
| bufs[1] = malloc (len); |
| bufs[2] = malloc (len); |
| if (bufs[1] != NULL) |
| { |
| if (getcwd (bufs[1], len) != NULL) |
| { |
| puts ("getcwd (bufs[1], len) didn't failed"); |
| return 1; |
| } |
| free (bufs[0]); |
| free (bufs[1]); |
| free (bufs[2]); |
| } |
| |
| memset (thepath, '\xfe', sizeof (thepath)); |
| if (getcwd (thepath, len) != NULL) |
| { |
| puts ("getcwd (thepath, len) didn't failed"); |
| return 1; |
| } |
| |
| for (i = len; i < sizeof thepath; ++i) |
| if (thepath[i] != '\xfe') |
| { |
| puts ("thepath[i] != '\xfe'"); |
| return 1; |
| } |
| |
| /* Now test handling of correctly sized buffers. */ |
| bufs[0] = getcwd (NULL, len + 1); |
| if (bufs[0] == NULL) |
| { |
| puts ("getcwd (NULL, len + 1) failed"); |
| return 1; |
| } |
| free (bufs[0]); |
| |
| memset (thepath, '\xff', sizeof thepath); |
| if (getcwd (thepath, len + 1) == NULL) |
| { |
| puts ("getcwd (thepath, len + 1) failed"); |
| return 1; |
| } |
| |
| for (i = len + 1; i < sizeof thepath; ++i) |
| if (thepath[i] != '\xff') |
| { |
| printf ("thepath[%zd] != '\xff'\n", i); |
| return 1; |
| } |
| |
| puts ("everything OK"); |
| |
| return 0; |
| } |
| |
| #include "../test-skeleton.c" |