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 "hdr/types/FILE.h" 13 #include "src/__support/macros/config.h" 14 #include "src/errno/libc_errno.h" 15 #include <stddef.h> 16 17 namespace LIBC_NAMESPACE_DECL { 18 19 LLVM_LIBC_FUNCTION(size_t, fread_unlocked, 20 (void *__restrict buffer, size_t size, size_t nmemb, 21 ::FILE *stream)) { 22 if (size == 0 || nmemb == 0) 23 return 0; 24 auto result = reinterpret_cast<LIBC_NAMESPACE::File *>(stream)->read_unlocked( 25 buffer, size * nmemb); 26 if (result.has_error()) 27 libc_errno = result.error; 28 return result.value / size; 29 } 30 31 } // namespace LIBC_NAMESPACE_DECL 32