1b528cefcSMark Murray /* 2b528cefcSMark Murray * Copyright (c) 1995, 1996, 1997, 1998 Kungliga Tekniska H�gskolan 3b528cefcSMark Murray * (Royal Institute of Technology, Stockholm, Sweden). 4b528cefcSMark Murray * All rights reserved. 5b528cefcSMark Murray * 6b528cefcSMark Murray * Redistribution and use in source and binary forms, with or without 7b528cefcSMark Murray * modification, are permitted provided that the following conditions 8b528cefcSMark Murray * are met: 9b528cefcSMark Murray * 10b528cefcSMark Murray * 1. Redistributions of source code must retain the above copyright 11b528cefcSMark Murray * notice, this list of conditions and the following disclaimer. 12b528cefcSMark Murray * 13b528cefcSMark Murray * 2. Redistributions in binary form must reproduce the above copyright 14b528cefcSMark Murray * notice, this list of conditions and the following disclaimer in the 15b528cefcSMark Murray * documentation and/or other materials provided with the distribution. 16b528cefcSMark Murray * 17b528cefcSMark Murray * 3. Neither the name of the Institute nor the names of its contributors 18b528cefcSMark Murray * may be used to endorse or promote products derived from this software 19b528cefcSMark Murray * without specific prior written permission. 20b528cefcSMark Murray * 21b528cefcSMark Murray * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22b528cefcSMark Murray * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23b528cefcSMark Murray * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24b528cefcSMark Murray * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25b528cefcSMark Murray * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26b528cefcSMark Murray * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27b528cefcSMark Murray * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28b528cefcSMark Murray * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29b528cefcSMark Murray * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30b528cefcSMark Murray * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31b528cefcSMark Murray * SUCH DAMAGE. 32b528cefcSMark Murray */ 33b528cefcSMark Murray 34b528cefcSMark Murray #ifdef HAVE_CONFIG_H 35b528cefcSMark Murray #include <config.h> 36c19800e8SDoug Rabson RCSID("$Id: net_read.c 21005 2007-06-08 01:54:35Z lha $"); 37b528cefcSMark Murray #endif 38b528cefcSMark Murray 39b528cefcSMark Murray #include <sys/types.h> 40b528cefcSMark Murray #include <unistd.h> 41b528cefcSMark Murray #include <errno.h> 42b528cefcSMark Murray 43c19800e8SDoug Rabson #include "roken.h" 44b528cefcSMark Murray 45b528cefcSMark Murray /* 46b528cefcSMark Murray * Like read but never return partial data. 47b528cefcSMark Murray */ 48b528cefcSMark Murray 49c19800e8SDoug Rabson ssize_t ROKEN_LIB_FUNCTION 50b528cefcSMark Murray net_read (int fd, void *buf, size_t nbytes) 51b528cefcSMark Murray { 52b528cefcSMark Murray char *cbuf = (char *)buf; 53b528cefcSMark Murray ssize_t count; 54b528cefcSMark Murray size_t rem = nbytes; 55b528cefcSMark Murray 56b528cefcSMark Murray while (rem > 0) { 57b528cefcSMark Murray #ifdef WIN32 58b528cefcSMark Murray count = recv (fd, cbuf, rem, 0); 59b528cefcSMark Murray #else 60b528cefcSMark Murray count = read (fd, cbuf, rem); 61b528cefcSMark Murray #endif 62b528cefcSMark Murray if (count < 0) { 63b528cefcSMark Murray if (errno == EINTR) 64b528cefcSMark Murray continue; 65b528cefcSMark Murray else 66b528cefcSMark Murray return count; 67b528cefcSMark Murray } else if (count == 0) { 68b528cefcSMark Murray return count; 69b528cefcSMark Murray } 70b528cefcSMark Murray cbuf += count; 71b528cefcSMark Murray rem -= count; 72b528cefcSMark Murray } 73b528cefcSMark Murray return nbytes; 74b528cefcSMark Murray } 75