mirror of
https://git.savannah.gnu.org/git/gnulib.git
synced 2025-08-17 12:41:05 +03:00
88 lines
2.7 KiB
C
88 lines
2.7 KiB
C
/* Test of opening a file descriptor.
|
|
Copyright (C) 2007-2011 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 <http://www.gnu.org/licenses/>. */
|
|
|
|
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
|
|
|
|
/* This file is designed to test both open(n,buf[,mode]) and
|
|
openat(AT_FDCWD,n,buf[,mode]). 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_open (int (*func) (char const *, int, ...), bool print)
|
|
{
|
|
int fd;
|
|
/* Remove anything from prior partial run. */
|
|
unlink (BASE "file");
|
|
|
|
/* Cannot create directory. */
|
|
errno = 0;
|
|
ASSERT (func ("nonexist.ent/", O_CREAT | O_RDONLY, 0600) == -1);
|
|
ASSERT (errno == ENOTDIR || errno == EISDIR || errno == ENOENT
|
|
|| errno == EINVAL);
|
|
|
|
/* Create a regular file. */
|
|
fd = func (BASE "file", O_CREAT | O_RDONLY, 0600);
|
|
ASSERT (0 <= fd);
|
|
ASSERT (close (fd) == 0);
|
|
|
|
/* Trailing slash handling. */
|
|
errno = 0;
|
|
ASSERT (func (BASE "file/", O_RDONLY) == -1);
|
|
ASSERT (errno == ENOTDIR || errno == EISDIR || errno == EINVAL);
|
|
|
|
/* Directories cannot be opened for writing. */
|
|
errno = 0;
|
|
ASSERT (func (".", O_WRONLY) == -1);
|
|
ASSERT (errno == EISDIR || errno == EACCES);
|
|
|
|
/* /dev/null must exist, and be writable. */
|
|
fd = func ("/dev/null", O_RDONLY);
|
|
ASSERT (0 <= fd);
|
|
{
|
|
char c;
|
|
ASSERT (read (fd, &c, 1) == 0);
|
|
}
|
|
ASSERT (close (fd) == 0);
|
|
fd = func ("/dev/null", O_WRONLY);
|
|
ASSERT (0 <= fd);
|
|
ASSERT (write (fd, "c", 1) == 1);
|
|
ASSERT (close (fd) == 0);
|
|
|
|
/* Symlink handling, where supported. */
|
|
if (symlink (BASE "file", BASE "link") != 0)
|
|
{
|
|
ASSERT (unlink (BASE "file") == 0);
|
|
if (print)
|
|
fputs ("skipping test: symlinks not supported on this file system\n",
|
|
stderr);
|
|
return 77;
|
|
}
|
|
errno = 0;
|
|
ASSERT (func (BASE "link/", O_RDONLY) == -1);
|
|
ASSERT (errno == ENOTDIR);
|
|
fd = func (BASE "link", O_RDONLY);
|
|
ASSERT (0 <= fd);
|
|
ASSERT (close (fd) == 0);
|
|
|
|
/* Cleanup. */
|
|
ASSERT (unlink (BASE "file") == 0);
|
|
ASSERT (unlink (BASE "link") == 0);
|
|
|
|
return 0;
|
|
}
|