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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2013 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
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 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <errno.h> | |
23 | ||
24 | #include "dbus-unit.h" | |
25 | #include "dbus-common.h" | |
26 | #include "dbus-cgroup.h" | |
27 | #include "dbus-kill.h" | |
28 | #include "selinux-access.h" | |
29 | #include "dbus-scope.h" | |
30 | ||
31 | #define BUS_SCOPE_INTERFACE \ | |
32 | " <interface name=\"org.freedesktop.systemd1.Scope\">\n" \ | |
d7550a67 | 33 | BUS_UNIT_CGROUP_INTERFACE \ |
6c12b52e LP |
34 | " <property name=\"TimeoutStopUSec\" type=\"t\" access=\"read\"/>\n" \ |
35 | BUS_KILL_CONTEXT_INTERFACE \ | |
36 | BUS_CGROUP_CONTEXT_INTERFACE \ | |
37 | " <property name=\"Result\" type=\"s\" access=\"read\"/>\n" \ | |
38 | " </interface>\n" | |
39 | ||
40 | #define INTROSPECTION \ | |
41 | DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \ | |
42 | "<node>\n" \ | |
43 | BUS_UNIT_INTERFACE \ | |
44 | BUS_SCOPE_INTERFACE \ | |
45 | BUS_PROPERTIES_INTERFACE \ | |
46 | BUS_PEER_INTERFACE \ | |
47 | BUS_INTROSPECTABLE_INTERFACE \ | |
48 | "</node>\n" | |
49 | ||
50 | #define INTERFACES_LIST \ | |
51 | BUS_UNIT_INTERFACES_LIST \ | |
52 | "org.freedesktop.systemd1.Scope\0" | |
53 | ||
54 | const char bus_scope_interface[] _introspect_("Scope") = BUS_SCOPE_INTERFACE; | |
55 | ||
56 | static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_scope_append_scope_result, scope_result, ScopeResult); | |
57 | ||
58 | static const BusProperty bus_scope_properties[] = { | |
59 | { "TimeoutStopUSec", bus_property_append_usec, "t", offsetof(Scope, timeout_stop_usec) }, | |
60 | { "Result", bus_scope_append_scope_result, "s", offsetof(Scope, result) }, | |
61 | {} | |
62 | }; | |
63 | ||
64 | DBusHandlerResult bus_scope_message_handler(Unit *u, DBusConnection *c, DBusMessage *message) { | |
65 | Scope *s = SCOPE(u); | |
66 | ||
67 | const BusBoundProperties bps[] = { | |
68 | { "org.freedesktop.systemd1.Unit", bus_unit_properties, u }, | |
d7550a67 | 69 | { "org.freedesktop.systemd1.Scope", bus_unit_cgroup_properties, u }, |
6c12b52e LP |
70 | { "org.freedesktop.systemd1.Scope", bus_scope_properties, s }, |
71 | { "org.freedesktop.systemd1.Scope", bus_cgroup_context_properties, &s->cgroup_context }, | |
72 | { "org.freedesktop.systemd1.Scope", bus_kill_context_properties, &s->kill_context }, | |
73 | {} | |
74 | }; | |
75 | ||
76 | SELINUX_UNIT_ACCESS_CHECK(u, c, message, "status"); | |
77 | ||
78 | return bus_default_message_handler(c, message, INTROSPECTION, INTERFACES_LIST, bps); | |
79 | } | |
80 | ||
9f2e86af | 81 | static int bus_scope_set_transient_property( |
6c12b52e LP |
82 | Scope *s, |
83 | const char *name, | |
84 | DBusMessageIter *i, | |
85 | UnitSetPropertiesMode mode, | |
86 | DBusError *error) { | |
87 | ||
88 | int r; | |
89 | ||
90 | assert(name); | |
91 | assert(s); | |
92 | assert(i); | |
93 | ||
94 | if (streq(name, "PIDs")) { | |
95 | DBusMessageIter sub; | |
adb3a45d | 96 | unsigned n; |
6c12b52e LP |
97 | |
98 | if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_ARRAY || | |
99 | dbus_message_iter_get_element_type(i) != DBUS_TYPE_UINT32) | |
100 | return -EINVAL; | |
101 | ||
102 | r = set_ensure_allocated(&s->pids, trivial_hash_func, trivial_compare_func); | |
103 | if (r < 0) | |
104 | return r; | |
105 | ||
106 | dbus_message_iter_recurse(i, &sub); | |
107 | while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_UINT32) { | |
108 | uint32_t pid; | |
109 | ||
110 | dbus_message_iter_get_basic(&sub, &pid); | |
111 | ||
112 | if (pid <= 1) | |
113 | return -EINVAL; | |
114 | ||
adb3a45d LP |
115 | if (mode != UNIT_CHECK) { |
116 | r = set_put(s->pids, LONG_TO_PTR(pid)); | |
117 | if (r < 0 && r != -EEXIST) | |
118 | return r; | |
119 | } | |
6c12b52e LP |
120 | |
121 | dbus_message_iter_next(&sub); | |
adb3a45d | 122 | n++; |
6c12b52e LP |
123 | } |
124 | ||
adb3a45d | 125 | if (n <= 0) |
6c12b52e LP |
126 | return -EINVAL; |
127 | ||
128 | return 1; | |
cc23f9f1 LP |
129 | |
130 | } else if (streq(name, "TimeoutStopUSec")) { | |
131 | ||
132 | if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_UINT64) | |
133 | return -EINVAL; | |
134 | ||
135 | if (mode != UNIT_CHECK) { | |
136 | uint64_t t; | |
137 | ||
138 | dbus_message_iter_get_basic(i, &t); | |
139 | ||
140 | s->timeout_stop_usec = t; | |
141 | } | |
142 | ||
143 | return 1; | |
6c12b52e LP |
144 | } |
145 | ||
146 | return 0; | |
147 | } | |
148 | ||
149 | int bus_scope_set_property( | |
150 | Unit *u, | |
151 | const char *name, | |
152 | DBusMessageIter *i, | |
153 | UnitSetPropertiesMode mode, | |
154 | DBusError *error) { | |
155 | ||
156 | Scope *s = SCOPE(u); | |
157 | int r; | |
158 | ||
159 | assert(name); | |
160 | assert(u); | |
161 | assert(i); | |
162 | ||
163 | r = bus_cgroup_set_property(u, &s->cgroup_context, name, i, mode, error); | |
164 | if (r != 0) | |
165 | return r; | |
166 | ||
167 | if (u->load_state == UNIT_STUB) { | |
168 | /* While we are created we still accept PIDs */ | |
169 | ||
9f2e86af | 170 | r = bus_scope_set_transient_property(s, name, i, mode, error); |
6c12b52e LP |
171 | if (r != 0) |
172 | return r; | |
173 | } | |
174 | ||
175 | return 0; | |
176 | } | |
177 | ||
178 | int bus_scope_commit_properties(Unit *u) { | |
179 | assert(u); | |
180 | ||
181 | unit_realize_cgroup(u); | |
182 | return 0; | |
183 | } |