31 lines · cpp
1//===-- Linux implementation of write -------------------------------------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#include "src/unistd/write.h"10 11#include "src/__support/OSUtil/syscall.h" // For internal syscall function.12#include "src/__support/common.h"13#include "src/__support/libc_errno.h"14#include "src/__support/macros/config.h"15 16#include <sys/syscall.h> // For syscall numbers.17 18namespace LIBC_NAMESPACE_DECL {19 20LLVM_LIBC_FUNCTION(ssize_t, write, (int fd, const void *buf, size_t count)) {21 ssize_t ret =22 LIBC_NAMESPACE::syscall_impl<ssize_t>(SYS_write, fd, buf, count);23 if (ret < 0) {24 libc_errno = static_cast<int>(-ret);25 return -1;26 }27 return ret;28}29 30} // namespace LIBC_NAMESPACE_DECL31