144 lines
4.4 KiB
C
144 lines
4.4 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
|
|
/***
|
|
This file is part of systemd.
|
|
|
|
Copyright 2013 Zbigniew Jędrzejewski-Szmek
|
|
|
|
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 <errno.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include "format-util.h"
|
|
#include "install-printf.h"
|
|
#include "install.h"
|
|
#include "macro.h"
|
|
#include "specifier.h"
|
|
#include "string-util.h"
|
|
#include "unit-name.h"
|
|
#include "user-util.h"
|
|
|
|
static int specifier_prefix_and_instance(char specifier, void *data, void *userdata, char **ret) {
|
|
const UnitFileInstallInfo *i = userdata;
|
|
_cleanup_free_ char *prefix = NULL;
|
|
int r;
|
|
|
|
assert(i);
|
|
|
|
r = unit_name_to_prefix_and_instance(i->name, &prefix);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (endswith(prefix, "@") && i->default_instance) {
|
|
char *ans;
|
|
|
|
ans = strjoin(prefix, i->default_instance);
|
|
if (!ans)
|
|
return -ENOMEM;
|
|
*ret = ans;
|
|
} else
|
|
*ret = TAKE_PTR(prefix);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int specifier_name(char specifier, void *data, void *userdata, char **ret) {
|
|
const UnitFileInstallInfo *i = userdata;
|
|
char *ans;
|
|
|
|
assert(i);
|
|
|
|
if (unit_name_is_valid(i->name, UNIT_NAME_TEMPLATE) && i->default_instance)
|
|
return unit_name_replace_instance(i->name, i->default_instance, ret);
|
|
|
|
ans = strdup(i->name);
|
|
if (!ans)
|
|
return -ENOMEM;
|
|
*ret = ans;
|
|
return 0;
|
|
}
|
|
|
|
static int specifier_prefix(char specifier, void *data, void *userdata, char **ret) {
|
|
const UnitFileInstallInfo *i = userdata;
|
|
|
|
assert(i);
|
|
|
|
return unit_name_to_prefix(i->name, ret);
|
|
}
|
|
|
|
static int specifier_instance(char specifier, void *data, void *userdata, char **ret) {
|
|
const UnitFileInstallInfo *i = userdata;
|
|
char *instance;
|
|
int r;
|
|
|
|
assert(i);
|
|
|
|
r = unit_name_to_instance(i->name, &instance);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (isempty(instance)) {
|
|
r = free_and_strdup(&instance, strempty(i->default_instance));
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
*ret = instance;
|
|
return 0;
|
|
}
|
|
|
|
int install_full_printf(UnitFileInstallInfo *i, const char *format, char **ret) {
|
|
|
|
/* This is similar to unit_full_printf() but does not support
|
|
* anything path-related.
|
|
*
|
|
* %n: the full id of the unit (foo@bar.waldo)
|
|
* %N: the id of the unit without the suffix (foo@bar)
|
|
* %p: the prefix (foo)
|
|
* %i: the instance (bar)
|
|
|
|
* %U the UID of the running user
|
|
* %u the username of running user
|
|
* %m the machine ID of the running system
|
|
* %H the host name of the running system
|
|
* %b the boot ID of the running system
|
|
* %v `uname -r` of the running system
|
|
*/
|
|
|
|
const Specifier table[] = {
|
|
{ 'n', specifier_name, NULL },
|
|
{ 'N', specifier_prefix_and_instance, NULL },
|
|
{ 'p', specifier_prefix, NULL },
|
|
{ 'i', specifier_instance, NULL },
|
|
|
|
{ 'U', specifier_user_id, NULL },
|
|
{ 'u', specifier_user_name, NULL },
|
|
|
|
{ 'm', specifier_machine_id, NULL },
|
|
{ 'H', specifier_host_name, NULL },
|
|
{ 'b', specifier_boot_id, NULL },
|
|
{ 'v', specifier_kernel_release, NULL },
|
|
{}
|
|
};
|
|
|
|
assert(i);
|
|
assert(format);
|
|
assert(ret);
|
|
|
|
return specifier_printf(format, table, i, ret);
|
|
}
|