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/* Test of getcwd function.
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Copyright (C) 2000-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/param.h>
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#define TEST_FUNCTION do_test ()
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static int
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do_test (void)
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{
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char thepath[4096]; /* Yes, this limits the environment this test
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can run it but I honestly don't care about
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people which have this problem. */
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char *bufs[10];
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size_t lens[10];
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size_t sbs;
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size_t len, i;
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if (getcwd (thepath, sizeof thepath) == NULL)
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{
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if (errno == ERANGE)
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/* The path is too long, skip all tests. */
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return 0;
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puts ("getcwd (thepath, sizeof thepath) failed");
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return 1;
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}
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len = strlen (thepath);
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sbs = 1;
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while (sbs < len + 1)
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sbs <<= 1;
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for (i = 0; i < 4; ++i)
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{
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lens[i] = sbs;
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bufs[i] = (char *) malloc (sbs);
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}
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bufs[i] = getcwd (NULL, sbs);
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lens[i] = sbs;
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if (bufs[i] == NULL)
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{
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puts ("getcwd (NULL, sbs) failed");
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return 1;
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}
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++i;
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for (; i < 10; sbs >>= 1, ++i)
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{
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bufs[i] = (char *) malloc (MAX (1, sbs));
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lens[i] = sbs;
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}
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/* Before we test the result write something in the memory to see
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whether the allocation went right. */
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for (i = 0; i < 10; ++i)
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if (i != 4 && bufs[i] != NULL)
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memset (bufs[i], '\xff', lens[i]);
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if (strcmp (thepath, bufs[4]) != 0)
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{
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printf ("\
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getcwd (NULL, sbs) = \"%s\", getcwd (thepath, sizeof thepath) = \"%s\"\n",
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bufs[4], thepath);
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return 1;
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}
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/* Now overwrite all buffers to see that getcwd allocated the buffer
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of right size. */
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for (i = 0; i < 10; ++i)
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memset (bufs[i], i, lens[i]);
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for (i = 0; i < 10; ++i)
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free (bufs[i]);
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/* Test whether the function signals success despite the buffer
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being too small. */
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if (getcwd (NULL, len) != NULL)
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{
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puts ("getcwd (NULL, len) didn't failed");
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return 1;
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}
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bufs[0] = malloc (len);
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bufs[1] = malloc (len);
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bufs[2] = malloc (len);
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if (bufs[1] != NULL)
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{
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if (getcwd (bufs[1], len) != NULL)
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{
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puts ("getcwd (bufs[1], len) didn't failed");
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return 1;
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}
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free (bufs[0]);
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free (bufs[1]);
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free (bufs[2]);
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}
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memset (thepath, '\xfe', sizeof (thepath));
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if (getcwd (thepath, len) != NULL)
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{
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puts ("getcwd (thepath, len) didn't failed");
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return 1;
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}
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for (i = len; i < sizeof thepath; ++i)
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if (thepath[i] != '\xfe')
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{
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puts ("thepath[i] != '\xfe'");
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return 1;
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}
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/* Now test handling of correctly sized buffers. */
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bufs[0] = getcwd (NULL, len + 1);
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if (bufs[0] == NULL)
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{
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puts ("getcwd (NULL, len + 1) failed");
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return 1;
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}
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free (bufs[0]);
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memset (thepath, '\xff', sizeof thepath);
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if (getcwd (thepath, len + 1) == NULL)
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{
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puts ("getcwd (thepath, len + 1) failed");
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return 1;
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}
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for (i = len + 1; i < sizeof thepath; ++i)
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if (thepath[i] != '\xff')
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{
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printf ("thepath[%zd] != '\xff'\n", i);
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return 1;
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}
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puts ("everything OK");
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return 0;
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}
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#include "../test-skeleton.c"
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