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 "src/__support/OSUtil/syscall.h" // For internal syscall function.
12 #include "src/__support/common.h"
13 
14 #include <errno.h>
15 #include <sys/syscall.h> // For syscall numbers.
16 
17 namespace __llvm_libc {
18 
19 LLVM_LIBC_FUNCTION(ssize_t, write, (int fd, const void *buf, size_t count)) {
20   long ret = __llvm_libc::syscall(SYS_write, fd, buf, count);
21   if (ret < 0) {
22     errno = -ret;
23     return -1;
24   }
25   return ret;
26 }
27 
28 } // namespace __llvm_libc
29