1/* Copyright (c) 2013 The Chromium Authors. All rights reserved. 2 * Use of this source code is governed by a BSD-style license that can be 3 * found in the LICENSE file. */ 4 5#ifndef _GNU_SOURCE 6#define _GNU_SOURCE 7#endif 8#include <stdio.h> 9#include <sys/types.h> 10#include <unistd.h> 11 12#if defined(__native_client__) && defined(__GLIBC__) 13 14static ssize_t fdopen_read(void *cookie, char *buf, size_t size) { 15 return read((int) cookie, buf, size); 16} 17 18static ssize_t fdopen_write(void *cookie, const char *buf, size_t size) { 19 return write((int) cookie, buf, size); 20} 21 22static int fdopen_seek(void *cookie, off_t *offset, int whence) { 23 off_t ret = lseek((int) cookie, *offset, whence); 24 if (ret < 0) { 25 return -1; 26 } 27 *offset = ret; 28 return 0; 29} 30 31static int fdopen_close(void *cookie) { 32 return close((int) cookie); 33} 34 35static cookie_io_functions_t fdopen_functions = { 36 fdopen_read, 37 fdopen_write, 38 fdopen_seek, 39 fdopen_close, 40}; 41 42/* 43 * TODO(bradnelson): Remove this glibc is fixed. 44 * See: https://code.google.com/p/nativeclient/issues/detail?id=3362 45 * Workaround fdopen in glibc failing due to it vetting the provided file 46 * handles with fcntl which is not currently interceptable. 47 */ 48FILE *fdopen(int fildes, const char *mode) { 49 return fopencookie((void *) fildes, mode, fdopen_functions); 50} 51 52#endif /* defined(__native_client__) && defined(__GLIBC__) */ 53