diff options
Diffstat (limited to 'lib/gethostname.c')
-rw-r--r-- | lib/gethostname.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/lib/gethostname.c b/lib/gethostname.c new file mode 100644 index 000000000..fe78dbb4a --- /dev/null +++ b/lib/gethostname.c @@ -0,0 +1,49 @@ +/* gethostname emulation for SysV and POSIX.1. + Copyright (C) 1992 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 2, 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, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* David MacKenzie <djm@gnu.ai.mit.edu> */ + +#ifdef HAVE_UNAME +#include <sys/utsname.h> +#endif + +/* 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. */ + +int +gethostname (name, len) + char *name; + int 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; +} |