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/* Test of execution of program termination handlers.
Copyright (C) 2007-2018 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
#include <config.h>
#include <stdlib.h>
#include "signature.h"
SIGNATURE_CHECK (realpath, char *, (const char *, char *));
SIGNATURE_CHECK (canonicalize_file_name, char *, (const char *));
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include "same-inode.h"
#include "ignore-value.h"
#include "null-ptr.h"
#include "macros.h"
#define BASE "t-can-lgpl.tmp"
int
main (void)
{
#if GNULIB_TEST_CANONICALIZE
/* No need to test canonicalize-lgpl module if canonicalize is also
in use. */
return 0;
#endif
/* Setup some hierarchy to be used by this test. Start by removing
any leftovers from a previous partial run. */
{
int fd;
ignore_value (system ("rm -rf " BASE " ise"));
ASSERT (mkdir (BASE, 0700) == 0);
fd = creat (BASE "/tra", 0600);
ASSERT (0 <= fd);
ASSERT (close (fd) == 0);
}
/* Check for ., .., intermediate // handling, and for error cases. */
{
char *result = canonicalize_file_name (BASE "//./..//" BASE "/tra");
ASSERT (result != NULL);
ASSERT (strstr (result, "/" BASE "/tra")
== result + strlen (result) - strlen ("/" BASE "/tra"));
free (result);
errno = 0;
result = canonicalize_file_name ("");
ASSERT (result == NULL);
ASSERT (errno == ENOENT);
errno = 0;
result = canonicalize_file_name (null_ptr ());
ASSERT (result == NULL);
ASSERT (errno == EINVAL);
}
/* Check that a non-directory with trailing slash yields NULL. */
{
char *result;
errno = 0;
result = canonicalize_file_name (BASE "/tra/");
ASSERT (result == NULL);
ASSERT (errno == ENOTDIR);
}
/* Check that a missing directory yields NULL. */
{
char *result;
errno = 0;
result = canonicalize_file_name (BASE "/zzz/..");
ASSERT (result == NULL);
ASSERT (errno == ENOENT);
}
/* From here on out, tests involve symlinks. */
if (symlink (BASE "/ket", "ise") != 0)
{
ASSERT (remove (BASE "/tra") == 0);
ASSERT (rmdir (BASE) == 0);
fputs ("skipping test: symlinks not supported on this file system\n",
stderr);
return 77;
}
ASSERT (symlink ("bef", BASE "/plo") == 0);
ASSERT (symlink ("tra", BASE "/huk") == 0);
ASSERT (symlink ("lum", BASE "/bef") == 0);
ASSERT (symlink ("wum", BASE "/ouk") == 0);
ASSERT (symlink ("../ise", BASE "/ket") == 0);
ASSERT (mkdir (BASE "/lum", 0700) == 0);
ASSERT (symlink ("//.//../..", BASE "/droot") == 0);
/* Check that the symbolic link to a file can be resolved. */
{
char *result1 = canonicalize_file_name (BASE "/huk");
char *result2 = canonicalize_file_name (BASE "/tra");
ASSERT (result1 != NULL);
ASSERT (result2 != NULL);
ASSERT (strcmp (result1, result2) == 0);
ASSERT (strcmp (result1 + strlen (result1) - strlen ("/" BASE "/tra"),
"/" BASE "/tra") == 0);
free (result1);
free (result2);
}
/* Check that the symbolic link to a directory can be resolved. */
{
char *result1 = canonicalize_file_name (BASE "/plo");
char *result2 = canonicalize_file_name (BASE "/bef");
char *result3 = canonicalize_file_name (BASE "/lum");
ASSERT (result1 != NULL);
ASSERT (result2 != NULL);
ASSERT (result3 != NULL);
ASSERT (strcmp (result1, result2) == 0);
ASSERT (strcmp (result2, result3) == 0);
ASSERT (strcmp (result1 + strlen (result1) - strlen ("/" BASE "/lum"),
"/" BASE "/lum") == 0);
free (result1);
free (result2);
free (result3);
}
/* Check that a symbolic link to a nonexistent file yields NULL. */
{
char *result;
errno = 0;
result = canonicalize_file_name (BASE "/ouk");
ASSERT (result == NULL);
ASSERT (errno == ENOENT);
}
/* Check that a non-directory symlink with trailing slash yields NULL. */
{
char *result;
errno = 0;
result = canonicalize_file_name (BASE "/huk/");
ASSERT (result == NULL);
ASSERT (errno == ENOTDIR);
}
/* Check that a missing directory via symlink yields NULL. */
{
char *result;
errno = 0;
result = canonicalize_file_name (BASE "/ouk/..");
ASSERT (result == NULL);
ASSERT (errno == ENOENT);
}
/* Check that a loop of symbolic links is detected. */
{
char *result;
errno = 0;
result = canonicalize_file_name ("ise");
ASSERT (result == NULL);
ASSERT (errno == ELOOP);
}
/* Check that leading // is honored correctly. */
{
struct stat st1;
struct stat st2;
char *result1 = canonicalize_file_name ("//.");
char *result2 = canonicalize_file_name (BASE "/droot");
ASSERT (result1);
ASSERT (result2);
ASSERT (stat ("/", &st1) == 0);
ASSERT (stat ("//", &st2) == 0);
/* On IBM z/OS, "/" and "//" are distinct, yet they both have
st_dev == st_ino == 1. */
#ifndef __MVS__
if (SAME_INODE (st1, st2))
{
ASSERT (strcmp (result1, "/") == 0);
ASSERT (strcmp (result2, "/") == 0);
}
else
#endif
{
ASSERT (strcmp (result1, "//") == 0);
ASSERT (strcmp (result2, "//") == 0);
}
free (result1);
free (result2);
}
/* Cleanup. */
ASSERT (remove (BASE "/droot") == 0);
ASSERT (remove (BASE "/plo") == 0);
ASSERT (remove (BASE "/huk") == 0);
ASSERT (remove (BASE "/bef") == 0);
ASSERT (remove (BASE "/ouk") == 0);
ASSERT (remove (BASE "/ket") == 0);
ASSERT (remove (BASE "/lum") == 0);
ASSERT (remove (BASE "/tra") == 0);
ASSERT (remove (BASE) == 0);
ASSERT (remove ("ise") == 0);
return 0;
}
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