| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| /// |
| /// \file |
| /// This file contains the bare-metal implementation of fseek. |
| /// |
| //===----------------------------------------------------------------------===// |
| |
| #include "src/stdio/fseek.h" |
| |
| #include "hdr/errno_macros.h" |
| #include "src/__support/OSUtil/io.h" |
| #include "src/__support/common.h" |
| #include "src/__support/libc_errno.h" |
| #include "src/__support/macros/config.h" |
| |
| namespace LIBC_NAMESPACE_DECL { |
| |
| LLVM_LIBC_FUNCTION(int, fseek, (::FILE * stream, long offset, int whence)) { |
| if (stream == nullptr) { |
| libc_errno = EINVAL; |
| return -1; |
| } |
| off_t result = |
| __llvm_libc_stdio_seek(stream, static_cast<off_t>(offset), whence); |
| if (result < 0) { |
| libc_errno = static_cast<int>(-result); |
| return -1; |
| } |
| return 0; |
| } |
| |
| } // namespace LIBC_NAMESPACE_DECL |
