| Dmitry V. Levin | aaf526c | 2016-07-19 15:09:05 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Wrappers for recvmmsg and sendmmsg syscalls. |
| 3 | * |
| 4 | * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org> |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * 3. The name of the author may not be used to endorse or promote products |
| 16 | * derived from this software without specific prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 28 | */ |
| 29 | |
| 30 | #include "tests.h" |
| 31 | #include <errno.h> |
| Dmitry V. Levin | 6a2f43c | 2016-08-09 14:38:29 +0000 | [diff] [blame^] | 32 | #include <asm/unistd.h> |
| Dmitry V. Levin | aaf526c | 2016-07-19 15:09:05 +0000 | [diff] [blame] | 33 | |
| 34 | #ifndef __NR_recvmmsg |
| 35 | # define __NR_recvmmsg -1 |
| 36 | #endif |
| 37 | #define SC_recvmmsg 19 |
| 38 | |
| 39 | #ifndef __NR_sendmmsg |
| 40 | # define __NR_sendmmsg -1 |
| 41 | #endif |
| 42 | #define SC_sendmmsg 20 |
| 43 | |
| 44 | int |
| 45 | recv_mmsg(const int fd, struct mmsghdr *const vec, |
| 46 | const unsigned int vlen, const unsigned int flags, |
| 47 | struct timespec *const timeout) |
| 48 | { |
| 49 | int rc = socketcall(__NR_recvmmsg, SC_recvmmsg, |
| 50 | fd, (long) vec, vlen, flags, (long) timeout); |
| 51 | |
| 52 | if (rc < 0 && ENOSYS == errno) |
| 53 | perror_msg_and_skip("recvmmsg"); |
| 54 | |
| 55 | return rc; |
| 56 | } |
| 57 | |
| 58 | int |
| 59 | send_mmsg(const int fd, struct mmsghdr *const vec, |
| 60 | const unsigned int vlen, const unsigned int flags) |
| 61 | { |
| 62 | int rc = socketcall(__NR_sendmmsg, SC_sendmmsg, |
| 63 | fd, (long) vec, vlen, flags, 0); |
| 64 | |
| 65 | if (rc < 0 && ENOSYS == errno) |
| 66 | perror_msg_and_skip("sendmmsg"); |
| 67 | |
| 68 | return rc; |
| 69 | } |