1 /*- 2 * Copyright (c) 2009-2010 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Pawel Jakub Dawidek under sponsorship from 6 * the FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include <sys/types.h> 34 #include <sys/socket.h> 35 36 #include <assert.h> 37 #include <errno.h> 38 #include <stdlib.h> 39 #include <strings.h> 40 41 #include "proto_impl.h" 42 43 /* Maximum size of packet we want to use when sending data. */ 44 #ifndef MAX_SEND_SIZE 45 //#define MAX_SEND_SIZE 32768 46 #define MAX_SEND_SIZE 131072 47 #endif 48 49 int 50 proto_common_send(int fd, const unsigned char *data, size_t size) 51 { 52 ssize_t done; 53 size_t sendsize; 54 55 do { 56 sendsize = size < MAX_SEND_SIZE ? size : MAX_SEND_SIZE; 57 done = send(fd, data, sendsize, MSG_NOSIGNAL); 58 if (done == 0) 59 return (ENOTCONN); 60 else if (done < 0) { 61 if (errno == EINTR) 62 continue; 63 return (errno); 64 } 65 data += done; 66 size -= done; 67 } while (size > 0); 68 69 return (0); 70 } 71 72 int 73 proto_common_recv(int fd, unsigned char *data, size_t size) 74 { 75 ssize_t done; 76 77 do { 78 done = recv(fd, data, size, MSG_WAITALL); 79 } while (done == -1 && errno == EINTR); 80 if (done == 0) 81 return (ENOTCONN); 82 else if (done < 0) 83 return (errno); 84 return (0); 85 } 86