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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2011 Lennart Poettering
systemd 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 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include "cgroup-attr.h"
#include "cgroup-util.h"
#include "list.h"
int cgroup_attribute_apply(CGroupAttribute *a, CGroupBonding *b) {
int r;
char *path = NULL;
char *v = NULL;
assert(a);
b = cgroup_bonding_find_list(b, a->controller);
if (!b)
return 0;
if (a->map_callback) {
r = a->map_callback(a->controller, a->name, a->value, &v);
if (r < 0)
return r;
}
r = cg_get_path(a->controller, b->path, a->name, &path);
if (r < 0) {
free(v);
return r;
}
r = write_one_line_file(path, v ? v : a->value);
if (r < 0)
log_warning("Failed to write '%s' to %s: %s", v ? v : a->value, path, strerror(-r));
free(path);
free(v);
return r;
}
int cgroup_attribute_apply_list(CGroupAttribute *first, CGroupBonding *b) {
CGroupAttribute *a;
int r = 0;
LIST_FOREACH(by_unit, a, first) {
int k;
k = cgroup_attribute_apply(a, b);
if (r == 0)
r = k;
}
return r;
}
CGroupAttribute *cgroup_attribute_find_list(CGroupAttribute *first, const char *controller, const char *name) {
CGroupAttribute *a;
assert(controller);
assert(name);
LIST_FOREACH(by_unit, a, first)
if (streq(a->controller, controller) &&
streq(a->name, name))
return a;
return NULL;
}
static void cgroup_attribute_free(CGroupAttribute *a) {
assert(a);
free(a->controller);
free(a->name);
free(a->value);
free(a);
}
void cgroup_attribute_free_list(CGroupAttribute *first) {
CGroupAttribute *a, *n;
LIST_FOREACH_SAFE(by_unit, a, n, first)
cgroup_attribute_free(a);
}
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