82 lines
2.7 KiB
C
82 lines
2.7 KiB
C
/*
|
|
* Copyright (c) 2015 Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org>
|
|
* Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include "tests.h"
|
|
#include <asm/unistd.h>
|
|
|
|
#ifdef __NR_readlinkat
|
|
|
|
# include <stdio.h>
|
|
# include <unistd.h>
|
|
|
|
# define PREFIX "test.readlinkat"
|
|
# define TARGET (PREFIX ".target")
|
|
# define LINKPATH (PREFIX ".link")
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
const char * const fname = tail_memdup(LINKPATH, sizeof(LINKPATH));
|
|
const char * const hex_fname =
|
|
hexquote_strndup(fname, sizeof(LINKPATH) - 1);
|
|
|
|
const unsigned int size = sizeof(TARGET) - 1;
|
|
char * const buf = tail_alloc(size);
|
|
|
|
(void) unlink(fname);
|
|
|
|
long rc = syscall(__NR_readlinkat, -100, fname, buf, size);
|
|
printf("readlinkat(AT_FDCWD, \"%s\", %p, %u) = -1 ENOENT (%m)\n",
|
|
hex_fname, buf, size);
|
|
|
|
if (symlink(TARGET, fname))
|
|
perror_msg_and_fail("symlink");
|
|
|
|
rc = syscall(__NR_readlinkat, -100, fname, buf, size);
|
|
if (rc < 0) {
|
|
perror("readlinkat");
|
|
(void) unlink(fname);
|
|
return 77;
|
|
}
|
|
const char * const hex_buf = hexquote_strndup(buf, size);
|
|
printf("readlinkat(AT_FDCWD, \"%s\", \"%s\", %u) = %u\n",
|
|
hex_fname, hex_buf, size, size);
|
|
|
|
if (unlink(fname))
|
|
perror_msg_and_fail("unlink");
|
|
|
|
puts("+++ exited with 0 +++");
|
|
return 0;
|
|
}
|
|
|
|
#else
|
|
|
|
SKIP_MAIN_UNDEFINED("__NR_readlink")
|
|
|
|
#endif
|