| 1 | //===-- Linux implementation of lseek -------------------------------------===// |
|---|---|
| 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/unistd/lseek.h" |
| 10 | #include "src/errno/libc_errno.h" |
| 11 | |
| 12 | #include "src/__support/File/linux/lseekImpl.h" |
| 13 | #include "src/__support/OSUtil/syscall.h" // For internal syscall function. |
| 14 | #include "src/__support/common.h" |
| 15 | |
| 16 | #include <sys/syscall.h> // For syscall numbers. |
| 17 | #include <unistd.h> // For off_t. |
| 18 | |
| 19 | namespace LIBC_NAMESPACE { |
| 20 | |
| 21 | LLVM_LIBC_FUNCTION(off_t, lseek, (int fd, off_t offset, int whence)) { |
| 22 | auto result = internal::lseekimpl(fd, offset, whence); |
| 23 | if (!result.has_value()) { |
| 24 | libc_errno = result.error(); |
| 25 | return -1; |
| 26 | } |
| 27 | return result.value(); |
| 28 | } |
| 29 | |
| 30 | } // namespace LIBC_NAMESPACE |
| 31 |