126 lines
4.3 KiB
C
126 lines
4.3 KiB
C
/* Tests for socket address type definitions.
|
|
Copyright (C) 2016-2022 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public License as
|
|
published by the Free Software Foundation; either version 2.1 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, see <https://www.gnu.org/licenses/>. */
|
|
|
|
#include <netinet/in.h>
|
|
#include <stdbool.h>
|
|
#include <stddef.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/un.h>
|
|
|
|
/* This is a copy of the previous definition of struct
|
|
sockaddr_storage. It is not equal to the old value of _SS_SIZE
|
|
(128) on all architectures. We must stay compatible with the old
|
|
definition. */
|
|
|
|
#define OLD_REFERENCE_SIZE 128
|
|
#define OLD_PADSIZE (OLD_REFERENCE_SIZE - (2 * sizeof (__ss_aligntype)))
|
|
struct sockaddr_storage_old
|
|
{
|
|
__SOCKADDR_COMMON (old_);
|
|
__ss_aligntype old_align;
|
|
char old_padding[OLD_PADSIZE];
|
|
};
|
|
|
|
static bool errors;
|
|
|
|
static void
|
|
check (bool ok, const char *message)
|
|
{
|
|
if (!ok)
|
|
{
|
|
printf ("error: failed check: %s\n", message);
|
|
errors = true;
|
|
}
|
|
}
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
check (OLD_REFERENCE_SIZE >= _SS_SIZE,
|
|
"old target size is not smaller than actual size");
|
|
check (sizeof (struct sockaddr_storage_old)
|
|
== sizeof (struct sockaddr_storage),
|
|
"old and new sizes match");
|
|
check (__alignof (struct sockaddr_storage_old)
|
|
== __alignof (struct sockaddr_storage),
|
|
"old and new alignment matches");
|
|
check (offsetof (struct sockaddr_storage_old, old_family)
|
|
== offsetof (struct sockaddr_storage, ss_family),
|
|
"old and new family offsets match");
|
|
check (sizeof (struct sockaddr_storage) == _SS_SIZE,
|
|
"struct sockaddr_storage size");
|
|
|
|
/* Check for lack of holes in the struct definition. */
|
|
check (offsetof (struct sockaddr_storage, __ss_padding)
|
|
== __SOCKADDR_COMMON_SIZE,
|
|
"implicit padding before explicit padding");
|
|
check (offsetof (struct sockaddr_storage, __ss_align)
|
|
== __SOCKADDR_COMMON_SIZE
|
|
+ sizeof (((struct sockaddr_storage) {}).__ss_padding),
|
|
"implicit padding before explicit padding");
|
|
|
|
/* Check for POSIX compatibility requirements between struct
|
|
sockaddr_storage and struct sockaddr_un. */
|
|
check (sizeof (struct sockaddr_storage) >= sizeof (struct sockaddr_un),
|
|
"sockaddr_storage is at least as large as sockaddr_un");
|
|
check (__alignof (struct sockaddr_storage)
|
|
>= __alignof (struct sockaddr_un),
|
|
"sockaddr_storage is at least as aligned as sockaddr_un");
|
|
check (offsetof (struct sockaddr_storage, ss_family)
|
|
== offsetof (struct sockaddr_un, sun_family),
|
|
"family offsets match");
|
|
|
|
/* Check that the compiler preserves bit patterns in aggregate
|
|
copies. Based on <https://gcc.gnu.org/PR71120>. */
|
|
check (sizeof (struct sockaddr_storage) >= sizeof (struct sockaddr_in),
|
|
"sockaddr_storage is at least as large as sockaddr_in");
|
|
{
|
|
struct sockaddr_storage addr;
|
|
memset (&addr, 0, sizeof (addr));
|
|
{
|
|
struct sockaddr_in *sinp = (struct sockaddr_in *)&addr;
|
|
sinp->sin_family = AF_INET;
|
|
sinp->sin_addr.s_addr = htonl (INADDR_LOOPBACK);
|
|
sinp->sin_port = htons (80);
|
|
}
|
|
struct sockaddr_storage copy;
|
|
copy = addr;
|
|
|
|
struct sockaddr_storage *p = malloc (sizeof (*p));
|
|
if (p == NULL)
|
|
{
|
|
printf ("error: malloc: %m\n");
|
|
return 1;
|
|
}
|
|
*p = copy;
|
|
const struct sockaddr_in *sinp = (const struct sockaddr_in *)p;
|
|
check (sinp->sin_family == AF_INET, "sin_family");
|
|
check (sinp->sin_addr.s_addr == htonl (INADDR_LOOPBACK), "sin_addr");
|
|
check (sinp->sin_port == htons (80), "sin_port");
|
|
free (p);
|
|
}
|
|
|
|
return errors;
|
|
}
|
|
|
|
#define TEST_FUNCTION do_test ()
|
|
#include "../test-skeleton.c"
|