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git.ipfire.org Git - people/ms/systemd.git/blob - hostname-setup.c
1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
28 #include "hostname-setup.h"
35 static int read_hostname(char **hn
) {
37 #if defined(TARGET_FEDORA)
43 if (!(f
= fopen("/etc/sysconfig/network", "re")))
50 if (!fgets(line
, sizeof(line
), f
)) {
60 if (!startswith(s
, "HOSTNAME="))
63 if (!(k
= strdup(s
+9))) {
78 #elif defined(TARGET_SUSE)
84 if ((r
= read_one_line_file("/etc/HOSTNAME", &s
)) < 0)
87 k
= strdup(strstrip(s
));
95 #elif defined(TARGET_DEBIAN)
101 if ((r
= read_one_line_file("/etc/hostname", &s
)) < 0)
104 k
= strdup(strstrip(s
));
112 #warning "Don't know how to read the hostname"
120 int hostname_setup(void) {
124 if ((r
= read_hostname(&hn
)) < 0) {
126 log_warning("Failed to read configured hostname: %s", strerror(-r
));
131 r
= sethostname(hn
, strlen(hn
)) < 0 ? -errno
: 0;
134 log_warning("Failed to set hostname to <%s>: %s", hn
, strerror(-r
));
136 log_info("Set hostname to <%s>.", hn
);