Update.
[glibc.git] / hurd / set-host.c
blob889f53288539d53fd2f1568652b531a5952ce893
1 /* Set a host configuration item kept as the whole contents of a file.
2 Copyright (C) 1996, 1997, 1999 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
20 #include <fcntl.h>
21 #include <hurd.h>
22 #include "hurdhost.h"
24 ssize_t
25 _hurd_set_host_config (const char *item, const char *value, size_t valuelen)
27 error_t err;
28 mach_msg_type_number_t nwrote;
29 file_t new, dir;
30 char *name;
32 dir = __file_name_split (item, &name);
33 if (dir == MACH_PORT_NULL)
34 return -1;
36 /* Create a new node. */
37 err = __dir_mkfile (dir, O_CREAT|O_TRUNC, 0644, &new);
38 if (! err)
40 /* Write the contents. */
41 err = __io_write (new, value, valuelen, 0, &nwrote);
42 if (! err)
43 /* Atomically link the new node onto the name. */
44 err = __dir_link (dir, new, name, 0);
45 __mach_port_deallocate (__mach_task_self (), new);
47 __mach_port_deallocate (__mach_task_self (), dir);
49 return err ? __hurd_fail (err) : nwrote;