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/* Tests of remove.
Copyright (C) 2009-2023 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 Eric Blake <ebb9@byu.net>, 2009. */
#include <config.h>
#include <stdio.h>
#include "signature.h"
SIGNATURE_CHECK (remove, int, (char const *));
#include <fcntl.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include "ignore-value.h"
#include "macros.h"
#define BASE "test-remove.t"
int
main (void)
{
/* Remove any leftovers from a previous partial run. */
ignore_value (system ("rm -rf " BASE "*"));
/* Setup. */
ASSERT (mkdir (BASE "dir", 0700) == 0);
ASSERT (close (creat (BASE "dir/file", 0600)) == 0);
/* Basic error conditions. */
errno = 0;
ASSERT (remove ("") == -1);
ASSERT (errno == ENOENT);
errno = 0;
ASSERT (remove ("nosuch") == -1);
ASSERT (errno == ENOENT);
errno = 0;
ASSERT (remove ("nosuch/") == -1);
ASSERT (errno == ENOENT);
errno = 0;
ASSERT (remove (".") == -1);
ASSERT (errno == EINVAL || errno == EBUSY);
/* Resulting errno after ".." or "/" is too varied to test; it is
reasonable to see any of EINVAL, EEXIST, ENOTEMPTY, EACCES. */
ASSERT (remove ("..") == -1);
ASSERT (remove ("/") == -1);
ASSERT (remove ("///") == -1);
errno = 0;
ASSERT (remove (BASE "dir/file/") == -1);
ASSERT (errno == ENOTDIR);
/* Non-empty directory. */
errno = 0;
ASSERT (remove (BASE "dir") == -1);
ASSERT (errno == EEXIST || errno == ENOTEMPTY);
/* Non-directory. */
ASSERT (remove (BASE "dir/file") == 0);
/* Empty directory. */
errno = 0;
ASSERT (remove (BASE "dir/.//") == -1);
ASSERT (errno == EINVAL || errno == EBUSY || errno == EEXIST);
ASSERT (remove (BASE "dir") == 0);
/* Test symlink behavior. Specifying trailing slash should remove
referent directory, or cause ENOTDIR failure, but not touch
symlink. */
if (symlink (BASE "dir", BASE "link") != 0)
{
fputs ("skipping test: symlinks not supported on this file system\n",
stderr);
return 77;
}
ASSERT (mkdir (BASE "dir", 0700) == 0);
errno = 0;
if (remove (BASE "link/") == 0)
{
struct stat st;
errno = 0;
ASSERT (stat (BASE "link", &st) == -1);
ASSERT (errno == ENOENT);
}
else
ASSERT (remove (BASE "dir") == 0);
{
struct stat st;
ASSERT (lstat (BASE "link", &st) == 0);
ASSERT (S_ISLNK (st.st_mode));
}
ASSERT (remove (BASE "link") == 0);
/* Trailing slash on symlink to non-directory is an error. */
ASSERT (symlink (BASE "loop", BASE "loop") == 0);
errno = 0;
ASSERT (remove (BASE "loop/") == -1);
ASSERT (errno == ELOOP || errno == ENOTDIR);
ASSERT (remove (BASE "loop") == 0);
ASSERT (close (creat (BASE "file", 0600)) == 0);
ASSERT (symlink (BASE "file", BASE "link") == 0);
errno = 0;
ASSERT (remove (BASE "link/") == -1);
ASSERT (errno == ENOTDIR);
ASSERT (remove (BASE "link") == 0);
ASSERT (remove (BASE "file") == 0);
return 0;
}
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