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-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "src/unistd/write.h" 10 11 #include "config/linux/syscall.h" // For internal syscall function. 12 #include "include/sys/syscall.h" // For syscall numbers. 13 #include "src/__support/common.h" 14 #include "src/errno/llvmlibc_errno.h" 15 16 namespace __llvm_libc { 17 LLVM_LIBC_ENTRYPOINT(write)18ssize_t LLVM_LIBC_ENTRYPOINT(write)(int fd, const void *buf, size_t count) { 19 long ret = __llvm_libc::syscall(SYS_write, fd, buf, count); 20 if (ret < 0) { 21 llvmlibc_errno = -ret; 22 return -1; 23 } 24 return ret; 25 } 26 27 } // namespace __llvm_libc 28