1dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 2168021c2827312e17a13d77b54f7d030a08b257bMark Salyzyn * Copyright (C) 2007-2014 The Android Open Source Project 3dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 4dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 5dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * you may not use this file except in compliance with the License. 6dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * You may obtain a copy of the License at 7dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 8dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 9dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 10dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 11dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 12dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * See the License for the specific language governing permissions and 14dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * limitations under the License. 15dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 16dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 17111e3d3d9cb6d59f0b2097c6641a7694a86edae5Elliott Hughes#if defined(_WIN32) 18dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 19dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <unistd.h> 20dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 216d753faaf8694792433eb78c5c3572efd74a3d54Mark Salyzyn#include <log/uio.h> 226d753faaf8694792433eb78c5c3572efd74a3d54Mark Salyzyn 23facf94c74a2cc44f294c4789d36d5c7281c7bc3fMark Salyzyn#include "log_portability.h" 246d753faaf8694792433eb78c5c3572efd74a3d54Mark Salyzyn 252ed51d708eda64516ec79ac6397f690de38f0075Mark SalyzynLIBLOG_ABI_PUBLIC int readv(int fd, struct iovec* vecs, int count) { 262ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int total = 0; 27dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 282ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn for (; count > 0; count--, vecs++) { 292ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn char* buf = vecs->iov_base; 302ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int len = vecs->iov_len; 316d753faaf8694792433eb78c5c3572efd74a3d54Mark Salyzyn 322ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn while (len > 0) { 332ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int ret = read(fd, buf, len); 342ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (ret < 0) { 352ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (total == 0) total = -1; 362ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn goto Exit; 372ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 382ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (ret == 0) goto Exit; 39dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 402ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn total += ret; 412ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn buf += ret; 422ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn len -= ret; 43dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 442ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 45dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source ProjectExit: 462ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return total; 47dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 48dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 492ed51d708eda64516ec79ac6397f690de38f0075Mark SalyzynLIBLOG_ABI_PUBLIC int writev(int fd, const struct iovec* vecs, int count) { 502ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int total = 0; 51dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 522ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn for (; count > 0; count--, vecs++) { 532ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn const char* buf = vecs->iov_base; 542ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int len = vecs->iov_len; 556d753faaf8694792433eb78c5c3572efd74a3d54Mark Salyzyn 562ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn while (len > 0) { 572ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int ret = write(fd, buf, len); 582ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (ret < 0) { 592ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (total == 0) total = -1; 602ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn goto Exit; 612ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 622ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (ret == 0) goto Exit; 63dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 642ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn total += ret; 652ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn buf += ret; 662ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn len -= ret; 67dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 682ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 696d753faaf8694792433eb78c5c3572efd74a3d54Mark SalyzynExit: 702ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return total; 71dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 72dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 73111e3d3d9cb6d59f0b2097c6641a7694a86edae5Elliott Hughes#endif 74