1 /* 2 * Wrappers for recvmmsg and sendmmsg syscalls. 3 * 4 * Copyright (c) 2016 Dmitry V. Levin <ldv (at) 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> 32 #include <asm/unistd.h> 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 } 70