| /* |
| * Copyright (c) 2015 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> |
| */ |
| |
| #ifdef TEST_SYSCALL_NAME |
| |
| # include <stdio.h> |
| # include <unistd.h> |
| # include <sys/select.h> |
| |
| # define TEST_SYSCALL_NR nrify(TEST_SYSCALL_NAME) |
| # define nrify(arg) nrify_(arg) |
| # define nrify_(arg) __NR_ ## arg |
| |
| # define TEST_SYSCALL_STR stringify(TEST_SYSCALL_NAME) |
| # define stringify(arg) stringify_(arg) |
| # define stringify_(arg) #arg |
| |
| 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)) |
| return 77; |
| |
| /* |
| * Start with a nice simple select. |
| */ |
| FD_ZERO(set); |
| FD_SET(fds[0], set); |
| FD_SET(fds[1], set); |
| if (syscall(TEST_SYSCALL_NR, fds[1] + 1, set, set, set, NULL) != 1) |
| return 77; |
| 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); |
| if (syscall(TEST_SYSCALL_NR, fds[1] + 1, NULL, set, NULL, &tm.tv) != 3) |
| return 77; |
| printf("%s(%d, NULL, [1 2 %d %d], NULL, {%lld, %lld})" |
| " = 3 (out [1 2 %d], left {%lld, %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); |
| if (syscall(TEST_SYSCALL_NR, -1, NULL, set, NULL, NULL) != -1) |
| return 77; |
| 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; |
| if (syscall(TEST_SYSCALL_NR, FD_SETSIZE + 1, set, set + 1, NULL, &tm.tv)) |
| return 77; |
| printf("%s(%d, [%d], [], NULL, {0, 123}) = 0 (Timeout)\n", |
| TEST_SYSCALL_STR, FD_SETSIZE + 1, fds[0]); |
| |
| puts("+++ exited with 0 +++"); |
| return 0; |
| } |
| |
| #else |
| |
| int |
| main(void) |
| { |
| return 77; |
| } |
| |
| #endif |