1 /* Copyright (C) 1991-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #include <sysdep.h>
19 #include <errno.h>
20 #include <unistd.h>
21 #include <stddef.h>
22
23 /* Write NBYTES of BUF to FD. Return the number written, or -1. */
24 ssize_t
__libc_write(int fd,const void * buf,size_t nbytes)25 __libc_write (int fd, const void *buf, size_t nbytes)
26 {
27 if (nbytes == 0)
28 return 0;
29 if (fd < 0)
30 {
31 __set_errno (EBADF);
32 return -1;
33 }
34 if (buf == NULL)
35 {
36 __set_errno (EINVAL);
37 return -1;
38 }
39
40 __set_errno (ENOSYS);
41 return -1;
42 }
43 libc_hidden_def (__libc_write)
44 stub_warning (write)
45
46 weak_alias (__libc_write, __write)
47 libc_hidden_weak (__write)
48 weak_alias (__libc_write, write)
49 libc_hidden_weak (write)
50