| /* Copyright (C) 1992-2016 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <errno.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <sys/utsname.h> |
| |
| /* Put the name of the current host in no more than LEN bytes of NAME. |
| The result is null-terminated if LEN is large enough for the full |
| name and the terminator. */ |
| int |
| __gethostname (char *name, size_t len) |
| { |
| struct utsname buf; |
| size_t node_len; |
| |
| if (uname (&buf)) |
| return -1; |
| |
| node_len = strlen (buf.nodename) + 1; |
| memcpy (name, buf.nodename, len < node_len ? len : node_len); |
| |
| if (node_len > len) |
| { |
| __set_errno (ENAMETOOLONG); |
| return -1; |
| } |
| return 0; |
| } |
| |
| weak_alias (__gethostname, gethostname) |