1 //===-- Implementation of fread_unlocked ----------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "src/stdio/fread_unlocked.h" 10 #include "src/__support/File/file.h" 11 12 #include "src/errno/libc_errno.h" 13 #include <stdio.h> 14 15 namespace LIBC_NAMESPACE { 16 17 LLVM_LIBC_FUNCTION(size_t, fread_unlocked, 18 (void *__restrict buffer, size_t size, size_t nmemb, 19 ::FILE *stream)) { 20 if (size == 0 || nmemb == 0) 21 return 0; 22 auto result = reinterpret_cast<LIBC_NAMESPACE::File *>(stream)->read_unlocked( 23 buffer, size * nmemb); 24 if (result.has_error()) 25 libc_errno = result.error; 26 return result.value / size; 27 } 28 29 } // namespace LIBC_NAMESPACE 30