1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
/*-*- 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 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 "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(name);
LIST_FOREACH(by_unit, a, first) {
if (controller) {
if (streq(a->controller, controller) && streq(a->name, name))
return a;
} else if (streq(a->name, name)) {
size_t x, y;
x = strlen(a->controller);
y = strlen(name);
if (y > x &&
memcmp(a->controller, name, x) == 0 &&
name[x] == '.')
return a;
}
}
return NULL;
}
void cgroup_attribute_free(CGroupAttribute *a) {
assert(a);
if (a->unit)
LIST_REMOVE(CGroupAttribute, by_unit, a->unit->cgroup_attributes, 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);
}
|
