+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering
-
- systemd 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.
-
- systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <unistd.h>
-#include <stdio.h>
-#include <errno.h>
-#include <string.h>
-#include <stdlib.h>
-
-#include "hostname-setup.h"
-#include "macro.h"
-#include "util.h"
-#include "log.h"
-
-#if defined(TARGET_FEDORA) || defined(TARGET_ALTLINUX) || defined(TARGET_MANDRIVA) || defined(TARGET_MEEGO) || defined(TARGET_MAGEIA)
-#define FILENAME "/etc/sysconfig/network"
-#elif defined(TARGET_SUSE) || defined(TARGET_SLACKWARE)
-#define FILENAME "/etc/HOSTNAME"
-#elif defined(TARGET_ARCH)
-#define FILENAME "/etc/rc.conf"
-#elif defined(TARGET_GENTOO)
-#define FILENAME "/etc/conf.d/hostname"
-#endif
-
-static int read_and_strip_hostname(const char *path, char **hn) {
- char *s;
- int r;
-
- assert(path);
- assert(hn);
-
- if ((r = read_one_line_file(path, &s)) < 0)
- return r;
-
- hostname_cleanup(s);
-
- if (isempty(s)) {
- free(s);
- return -ENOENT;
- }
-
- *hn = s;
-
- return 0;
-}
-
-static int read_distro_hostname(char **hn) {
-
-#if defined(TARGET_FEDORA) || defined(TARGET_ARCH) || defined(TARGET_GENTOO) || defined(TARGET_ALTLINUX) || defined(TARGET_MANDRIVA) || defined(TARGET_MEEGO) || defined(TARGET_MAGEIA)
- int r;
- FILE *f;
-
- assert(hn);
-
- if (!(f = fopen(FILENAME, "re")))
- return -errno;
-
- for (;;) {
- char line[LINE_MAX];
- char *s, *k;
-
- if (!fgets(line, sizeof(line), f)) {
- if (feof(f))
- break;
-
- r = -errno;
- goto finish;
- }
-
- s = strstrip(line);
-
- if (!startswith_no_case(s, "HOSTNAME="))
- continue;
-
- if (!(k = strdup(s+9))) {
- r = -ENOMEM;
- goto finish;
- }
-
- hostname_cleanup(k);
-
- if (isempty(k)) {
- free(k);
- r = -ENOENT;
- goto finish;
- }
-
- *hn = k;
- r = 0;
- goto finish;
- }
-
- r = -ENOENT;
-
-finish:
- fclose(f);
- return r;
-
-#elif defined(TARGET_SUSE) || defined(TARGET_SLACKWARE)
- return read_and_strip_hostname(FILENAME, hn);
-#else
- return -ENOENT;
-#endif
-}
-
-static int read_hostname(char **hn) {
- int r;
-
- assert(hn);
-
- /* First, try to load the generic hostname configuration file,
- * that we support on all distributions */
-
- if ((r = read_and_strip_hostname("/etc/hostname", hn)) < 0) {
-
- if (r == -ENOENT)
- return read_distro_hostname(hn);
-
- return r;
- }
-
- return 0;
-}
-
-int hostname_setup(void) {
- int r;
- char *b = NULL;
- const char *hn = NULL;
-
- if ((r = read_hostname(&b)) < 0) {
- if (r == -ENOENT)
- log_info("No hostname configured.");
- else
- log_warning("Failed to read configured hostname: %s", strerror(-r));
-
- hn = NULL;
- } else
- hn = b;
-
- if (!hn) {
- /* Don't override the hostname if it is unset and not
- * explicitly configured */
-
- char *old_hostname = NULL;
-
- if ((old_hostname = gethostname_malloc())) {
- bool already_set;
-
- already_set = old_hostname[0] != 0;
- free(old_hostname);
-
- if (already_set)
- goto finish;
- }
-
- hn = "localhost";
- }
-
- if (sethostname(hn, strlen(hn)) < 0) {
- log_warning("Failed to set hostname to <%s>: %m", hn);
- r = -errno;
- } else
- log_info("Set hostname to <%s>.", hn);
-
-finish:
- free(b);
-
- return r;
-}
~ianmdlvl / elogind.git / blobdiff