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 14 static ssize_t fdopen_read(void *cookie, char *buf, size_t size) { 15 return read((int) cookie, buf, size); 16 } 17 18 static ssize_t fdopen_write(void *cookie, const char *buf, size_t size) { 19 return write((int) cookie, buf, size); 20 } 21 22 static 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 31 static int fdopen_close(void *cookie) { 32 return close((int) cookie); 33 } 34 35 static 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 */ 48 FILE *fdopen(int fildes, const char *mode) { 49 return fopencookie((void *) fildes, mode, fdopen_functions); 50 } 51 52 #endif /* defined(__native_client__) && defined(__GLIBC__) */ 53
