blob: acff351d8717f4e0f59bdd41f1bab217e237832e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
/* gethostname emulation for SysV and POSIX.1.
Copyright (C) 1992, 2003, 2006, 2008 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* David MacKenzie <djm@gnu.ai.mit.edu> */
#include <config.h>
/* Specification. */
#include <unistd.h>
#ifdef HAVE_UNAME
# include <sys/utsname.h>
#endif
#include <string.h>
/* Put up to LEN chars of the host name into NAME.
Null terminate it if the name is shorter than LEN.
Return 0 if ok, -1 if error. */
#include <stddef.h>
int
gethostname (char *name, size_t len)
{
#ifdef HAVE_UNAME
struct utsname uts;
if (uname (&uts) == -1)
return -1;
if (len > sizeof (uts.nodename))
{
/* More space than we need is available. */
name[sizeof (uts.nodename)] = '\0';
len = sizeof (uts.nodename);
}
strncpy (name, uts.nodename, len);
#else
strcpy (name, ""); /* Hardcode your system name if you want. */
#endif
return 0;
}
|