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/*
* Copyright © 2012 Collabora, Ltd.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#define _GNU_SOURCE
#include <stdlib.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <unistd.h>
#include <dlfcn.h>
#include <errno.h>
#include <stdarg.h>
#include <fcntl.h>
#include "test-runner.h"
#include "../src/wayland-os.h"
static int fall_back;
static int (*real_socket)(int, int, int);
static int wrapped_calls_socket;
static int (*real_fcntl)(int, int, ...);
static int wrapped_calls_fcntl;
static void
init_fallbacks(int do_fallbacks)
{
fall_back = do_fallbacks;
real_socket = dlsym(RTLD_NEXT, "socket");
real_fcntl = dlsym(RTLD_NEXT, "fcntl");
}
__attribute__ ((visibility("default"))) int
socket(int domain, int type, int protocol)
{
wrapped_calls_socket++;
if (fall_back && (type & SOCK_CLOEXEC)) {
errno = EINVAL;
return -1;
}
return real_socket(domain, type, protocol);
}
__attribute__ ((visibility("default"))) int
fcntl(int fd, int cmd, ...)
{
va_list ap;
void *arg;
wrapped_calls_fcntl++;
if (fall_back && (cmd == F_DUPFD_CLOEXEC)) {
errno = EINVAL;
return -1;
}
va_start(ap, cmd);
arg = va_arg(ap, void*);
va_end(ap);
return real_fcntl(fd, cmd, arg);
}
static void
do_os_wrappers_socket_cloexec(int n)
{
int fd;
int nr_fds;
nr_fds = count_open_fds();
/* simply create a socket that closes on exec */
fd = wl_os_socket_cloexec(PF_LOCAL, SOCK_STREAM, 0);
assert(fd >= 0);
/*
* Must have 2 calls if falling back, but must also allow
* falling back without a forced fallback.
*/
assert(wrapped_calls_socket > n);
exec_fd_leak_check(nr_fds);
}
TEST(os_wrappers_socket_cloexec)
{
/* normal case */
init_fallbacks(0);
do_os_wrappers_socket_cloexec(0);
}
TEST(os_wrappers_socket_cloexec_fallback)
{
/* forced fallback */
init_fallbacks(1);
do_os_wrappers_socket_cloexec(1);
}
static void
do_os_wrappers_dupfd_cloexec(int n)
{
int base_fd;
int fd;
int nr_fds;
nr_fds = count_open_fds();
base_fd = socket(PF_LOCAL, SOCK_STREAM, 0);
assert(base_fd >= 0);
fd = wl_os_dupfd_cloexec(base_fd, 13);
assert(fd >= 13);
close(base_fd);
/*
* Must have 4 calls if falling back, but must also allow
* falling back without a forced fallback.
*/
assert(wrapped_calls_fcntl > n);
exec_fd_leak_check(nr_fds);
}
TEST(os_wrappers_dupfd_cloexec)
{
init_fallbacks(0);
do_os_wrappers_dupfd_cloexec(0);
}
TEST(os_wrappers_dupfd_cloexec_fallback)
{
init_fallbacks(1);
do_os_wrappers_dupfd_cloexec(3);
}
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