diff options
Diffstat (limited to 'gl/gethostname.c')
-rw-r--r-- | gl/gethostname.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/gl/gethostname.c b/gl/gethostname.c new file mode 100644 index 0000000..eedc40e --- /dev/null +++ b/gl/gethostname.c | |||
@@ -0,0 +1,52 @@ | |||
1 | /* gethostname emulation for SysV and POSIX.1. | ||
2 | |||
3 | Copyright (C) 1992, 2003, 2006 Free Software Foundation, Inc. | ||
4 | |||
5 | This program is free software; you can redistribute it and/or modify | ||
6 | it under the terms of the GNU General Public License as published by | ||
7 | the Free Software Foundation; either version 2, or (at your option) | ||
8 | any later version. | ||
9 | |||
10 | This program 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 | ||
13 | GNU General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU General Public License | ||
16 | along with this program; if not, write to the Free Software Foundation, | ||
17 | Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ | ||
18 | |||
19 | /* David MacKenzie <djm@gnu.ai.mit.edu> */ | ||
20 | |||
21 | #include <config.h> | ||
22 | |||
23 | #ifdef HAVE_UNAME | ||
24 | # include <sys/utsname.h> | ||
25 | #endif | ||
26 | |||
27 | /* Put up to LEN chars of the host name into NAME. | ||
28 | Null terminate it if the name is shorter than LEN. | ||
29 | Return 0 if ok, -1 if error. */ | ||
30 | |||
31 | #include <stddef.h> | ||
32 | |||
33 | int | ||
34 | gethostname (char *name, size_t len) | ||
35 | { | ||
36 | #ifdef HAVE_UNAME | ||
37 | struct utsname uts; | ||
38 | |||
39 | if (uname (&uts) == -1) | ||
40 | return -1; | ||
41 | if (len > sizeof (uts.nodename)) | ||
42 | { | ||
43 | /* More space than we need is available. */ | ||
44 | name[sizeof (uts.nodename)] = '\0'; | ||
45 | len = sizeof (uts.nodename); | ||
46 | } | ||
47 | strncpy (name, uts.nodename, len); | ||
48 | #else | ||
49 | strcpy (name, ""); /* Hardcode your system name if you want. */ | ||
50 | #endif | ||
51 | return 0; | ||
52 | } | ||