Dmitry V. Levin
daaf8ab7fe
Headers updated automatically using maint/update_copyright_years.sh script.
61 lines
2.3 KiB
C
61 lines
2.3 KiB
C
/*
|
|
* This file is part of strace test suite.
|
|
*
|
|
* Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
|
|
* Copyright (c) 2016-2018 The strace developers.
|
|
* 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 <assert.h>
|
|
#include <limits.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
unsigned long
|
|
inode_of_sockfd(const int fd)
|
|
{
|
|
assert(fd >= 0);
|
|
|
|
char linkpath[sizeof("/proc/self/fd/%u") + sizeof(int) * 3];
|
|
assert(snprintf(linkpath, sizeof(linkpath), "/proc/self/fd/%u", fd)
|
|
< (int) sizeof(linkpath));
|
|
|
|
char path[PATH_MAX + 1];
|
|
const ssize_t path_len = readlink(linkpath, path, sizeof(path) - 1);
|
|
if (path_len < 0)
|
|
perror_msg_and_fail("readlink: %s", linkpath);
|
|
path[path_len] = '\0';
|
|
|
|
static const char prefix[] = "socket:[";
|
|
const size_t prefix_len = sizeof(prefix) - 1;
|
|
assert(strncmp(path, prefix, prefix_len) == 0
|
|
&& path[path_len - 1] == ']');
|
|
|
|
return strtoul(path + prefix_len, NULL, 10);
|
|
}
|