106 lines
3.5 KiB
C
106 lines
3.5 KiB
C
/*
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* Based on test by Dr. David Alan Gilbert <dave@treblig.org>
|
|
*/
|
|
|
|
#include <assert.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <sys/select.h>
|
|
|
|
static fd_set set[0x1000000 / sizeof(fd_set)];
|
|
|
|
int main(void)
|
|
{
|
|
int fds[2];
|
|
struct {
|
|
struct timeval tv;
|
|
int pad[2];
|
|
} tm_in = {
|
|
.tv = { .tv_sec = 0xc0de1, .tv_usec = 0xc0de2 },
|
|
.pad = { 0xdeadbeef, 0xbadc0ded }
|
|
}, tm = tm_in;
|
|
|
|
if (pipe(fds))
|
|
perror_msg_and_fail("pipe");
|
|
|
|
/*
|
|
* Start with a nice simple select.
|
|
*/
|
|
FD_ZERO(set);
|
|
FD_SET(fds[0], set);
|
|
FD_SET(fds[1], set);
|
|
int rc = syscall(TEST_SYSCALL_NR, fds[1] + 1, set, set, set, NULL);
|
|
if (rc < 0)
|
|
perror_msg_and_skip(TEST_SYSCALL_STR);
|
|
assert(rc == 1);
|
|
printf("%s(%d, [%d %d], [%d %d], [%d %d], NULL) = 1 ()\n",
|
|
TEST_SYSCALL_STR, fds[1] + 1, fds[0], fds[1],
|
|
fds[0], fds[1], fds[0], fds[1]);
|
|
|
|
/*
|
|
* Another simple one, with a timeout.
|
|
*/
|
|
FD_SET(1, set);
|
|
FD_SET(2, set);
|
|
FD_SET(fds[0], set);
|
|
FD_SET(fds[1], set);
|
|
assert(syscall(TEST_SYSCALL_NR, fds[1] + 1, NULL, set, NULL, &tm.tv) == 3);
|
|
printf("%s(%d, NULL, [1 2 %d %d], NULL, {tv_sec=%lld, tv_usec=%lld})"
|
|
" = 3 (out [1 2 %d], left {tv_sec=%lld, tv_usec=%lld})\n",
|
|
TEST_SYSCALL_STR, fds[1] + 1, fds[0], fds[1],
|
|
(long long) tm_in.tv.tv_sec, (long long) tm_in.tv.tv_usec,
|
|
fds[1],
|
|
(long long) tm.tv.tv_sec, (long long) tm.tv.tv_usec);
|
|
|
|
/*
|
|
* Now the crash case that trinity found, negative nfds
|
|
* but with a pointer to a large chunk of valid memory.
|
|
*/
|
|
FD_ZERO(set);
|
|
FD_SET(fds[1],set);
|
|
assert(syscall(TEST_SYSCALL_NR, -1, NULL, set, NULL, NULL) == -1);
|
|
printf("%s(-1, NULL, %p, NULL, NULL) = -1 EINVAL (%m)\n",
|
|
TEST_SYSCALL_STR, set);
|
|
|
|
/*
|
|
* Another variant, with nfds exceeding FD_SETSIZE limit.
|
|
*/
|
|
FD_ZERO(set);
|
|
FD_SET(fds[0],set);
|
|
tm.tv.tv_sec = 0;
|
|
tm.tv.tv_usec = 123;
|
|
assert(syscall(TEST_SYSCALL_NR, FD_SETSIZE + 1, set, set + 1, NULL, &tm.tv) == 0);
|
|
printf("%s(%d, [%d], [], NULL, {tv_sec=0, tv_usec=123}) = 0 (Timeout)\n",
|
|
TEST_SYSCALL_STR, FD_SETSIZE + 1, fds[0]);
|
|
|
|
puts("+++ exited with 0 +++");
|
|
return 0;
|
|
}
|