configure tweaks, support $libc_add_on_config_subdirs
[glibc/pb-stable.git] / io / write.c
blob928d43ced270abac77ced62b33fa93af3f0e69e1
1 /* Copyright (C) 1991, 1995, 1996, 1997, 2002 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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.
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.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17 02111-1307 USA. */
19 #include <sysdep.h>
20 #include <errno.h>
21 #include <unistd.h>
22 #include <stddef.h>
24 /* Write NBYTES of BUF to FD. Return the number written, or -1. */
25 ssize_t
26 __libc_write (int fd, const void *buf, size_t nbytes)
28 if (nbytes == 0)
29 return 0;
30 if (fd < 0)
32 __set_errno (EBADF);
33 return -1;
35 if (buf == NULL)
37 __set_errno (EINVAL);
38 return -1;
41 __set_errno (ENOSYS);
42 return -1;
44 libc_hidden_def (__libc_write)
45 stub_warning (write)
47 weak_alias (__libc_write, __write)
48 libc_hidden_weak (__write)
49 weak_alias (__libc_write, write)
50 #include <stub-tag.h>