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/* Test of lstat() function.
Copyright (C) 2008-2023 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 Simon Josefsson, 2008; and Eric Blake, 2009. */
/* This file is designed to test both lstat(n,buf) and
fstatat(AT_FDCWD,n,buf,AT_SYMLINK_NOFOLLOW). FUNC is the function
to test. Assumes that BASE and ASSERT are already defined, and
that appropriate headers are already included. If PRINT, warn
before skipping symlink tests with status 77. */
static int
test_lstat_func (int (*func) (char const *, struct stat *), bool print)
{
struct stat st1;
struct stat st2;
/* Test for common directories. */
ASSERT (func (".", &st1) == 0);
ASSERT (func ("./", &st2) == 0);
#if !(defined _WIN32 && !defined __CYGWIN__ && !_GL_WINDOWS_STAT_INODES)
ASSERT (SAME_INODE (st1, st2));
#endif
ASSERT (S_ISDIR (st1.st_mode));
ASSERT (S_ISDIR (st2.st_mode));
ASSERT (func ("/", &st1) == 0);
ASSERT (func ("///", &st2) == 0);
#if !(defined _WIN32 && !defined __CYGWIN__ && !_GL_WINDOWS_STAT_INODES)
ASSERT (SAME_INODE (st1, st2));
#endif
ASSERT (S_ISDIR (st1.st_mode));
ASSERT (S_ISDIR (st2.st_mode));
ASSERT (func ("..", &st1) == 0);
ASSERT (S_ISDIR (st1.st_mode));
/* Test for error conditions. */
errno = 0;
ASSERT (func ("", &st1) == -1);
ASSERT (errno == ENOENT);
errno = 0;
ASSERT (func ("nosuch", &st1) == -1);
ASSERT (errno == ENOENT);
errno = 0;
ASSERT (func ("nosuch/", &st1) == -1);
ASSERT (errno == ENOENT);
ASSERT (close (creat (BASE "file", 0600)) == 0);
ASSERT (func (BASE "file", &st1) == 0);
ASSERT (S_ISREG (st1.st_mode));
errno = 0;
ASSERT (func (BASE "file/", &st1) == -1);
ASSERT (errno == ENOTDIR);
/* Now for some symlink tests, where supported. We set up:
link1 -> directory
link2 -> file
link3 -> dangling
link4 -> loop
then test behavior both with and without trailing slash.
*/
if (symlink (".", BASE "link1") != 0)
{
ASSERT (unlink (BASE "file") == 0);
if (print)
fputs ("skipping test: symlinks not supported on this file system\n",
stderr);
return 77;
}
ASSERT (symlink (BASE "file", BASE "link2") == 0);
ASSERT (symlink (BASE "nosuch", BASE "link3") == 0);
ASSERT (symlink (BASE "link4", BASE "link4") == 0);
ASSERT (func (BASE "link1", &st1) == 0);
ASSERT (S_ISLNK (st1.st_mode));
ASSERT (func (BASE "link1/", &st1) == 0);
ASSERT (stat (BASE "link1", &st2) == 0);
ASSERT (S_ISDIR (st1.st_mode));
ASSERT (S_ISDIR (st2.st_mode));
#if !(defined _WIN32 && !defined __CYGWIN__ && !_GL_WINDOWS_STAT_INODES)
ASSERT (SAME_INODE (st1, st2));
#endif
ASSERT (func (BASE "link2", &st1) == 0);
ASSERT (S_ISLNK (st1.st_mode));
errno = 0;
ASSERT (func (BASE "link2/", &st1) == -1);
ASSERT (errno == ENOTDIR);
ASSERT (func (BASE "link3", &st1) == 0);
ASSERT (S_ISLNK (st1.st_mode));
errno = 0;
ASSERT (func (BASE "link3/", &st1) == -1);
ASSERT (errno == ENOENT);
ASSERT (func (BASE "link4", &st1) == 0);
ASSERT (S_ISLNK (st1.st_mode));
errno = 0;
ASSERT (func (BASE "link4/", &st1) == -1);
ASSERT (errno == ELOOP);
/* Cleanup. */
ASSERT (unlink (BASE "file") == 0);
ASSERT (unlink (BASE "link1") == 0);
ASSERT (unlink (BASE "link2") == 0);
ASSERT (unlink (BASE "link3") == 0);
ASSERT (unlink (BASE "link4") == 0);
return 0;
}
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