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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
daf71ef6 LP |
2 | |
3 | #include "bus-error.h" | |
4 | #include "bus-locator.h" | |
5 | #include "locale-util.h" | |
6 | #include "path-util.h" | |
7 | #include "systemctl-daemon-reload.h" | |
8 | #include "systemctl-enable.h" | |
9 | #include "systemctl-start-unit.h" | |
10 | #include "systemctl-sysv-compat.h" | |
11 | #include "systemctl-util.h" | |
12 | #include "systemctl.h" | |
13 | ||
14 | static int normalize_filenames(char **names) { | |
daf71ef6 LP |
15 | int r; |
16 | ||
17 | STRV_FOREACH(u, names) | |
18 | if (!path_is_absolute(*u)) { | |
19 | char* normalized_path; | |
20 | ||
21 | if (!isempty(arg_root)) | |
22 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
23 | "Non-absolute paths are not allowed when --root is used: %s", | |
24 | *u); | |
25 | ||
26 | if (!strchr(*u,'/')) | |
27 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
28 | "Link argument does contain at least one directory separator: %s", | |
29 | *u); | |
30 | ||
31 | r = path_make_absolute_cwd(*u, &normalized_path); | |
32 | if (r < 0) | |
33 | return r; | |
34 | ||
35 | free_and_replace(*u, normalized_path); | |
36 | } | |
37 | ||
38 | return 0; | |
39 | } | |
40 | ||
20afd9a1 | 41 | static int normalize_names(char **names) { |
daf71ef6 LP |
42 | bool was_path = false; |
43 | ||
44 | STRV_FOREACH(u, names) { | |
45 | int r; | |
46 | ||
47 | if (!is_path(*u)) | |
48 | continue; | |
49 | ||
50 | r = free_and_strdup(u, basename(*u)); | |
51 | if (r < 0) | |
52 | return log_error_errno(r, "Failed to normalize unit file path: %m"); | |
53 | ||
54 | was_path = true; | |
55 | } | |
56 | ||
20afd9a1 | 57 | if (was_path) |
daf71ef6 LP |
58 | log_warning("Warning: Can't execute disable on the unit file path. Proceeding with the unit name."); |
59 | ||
60 | return 0; | |
61 | } | |
62 | ||
32baf64d | 63 | int verb_enable(int argc, char *argv[], void *userdata) { |
daf71ef6 LP |
64 | _cleanup_strv_free_ char **names = NULL; |
65 | const char *verb = argv[0]; | |
66 | UnitFileChange *changes = NULL; | |
67 | size_t n_changes = 0; | |
68 | int carries_install_info = -1; | |
69 | bool ignore_carries_install_info = arg_quiet; | |
70 | int r; | |
71 | ||
72 | if (!argv[1]) | |
73 | return 0; | |
74 | ||
75 | r = mangle_names("to enable", strv_skip(argv, 1), &names); | |
76 | if (r < 0) | |
77 | return r; | |
78 | ||
79 | r = enable_sysv_units(verb, names); | |
80 | if (r < 0) | |
81 | return r; | |
82 | ||
83 | /* If the operation was fully executed by the SysV compat, let's finish early */ | |
84 | if (strv_isempty(names)) { | |
85 | if (arg_no_reload || install_client_side()) | |
86 | return 0; | |
623461c1 LP |
87 | |
88 | r = daemon_reload(ACTION_RELOAD, /* graceful= */ false); | |
89 | return r > 0 ? 0 : r; | |
daf71ef6 LP |
90 | } |
91 | ||
92 | if (streq(verb, "disable")) { | |
20afd9a1 | 93 | r = normalize_names(names); |
daf71ef6 LP |
94 | if (r < 0) |
95 | return r; | |
96 | } | |
97 | ||
98 | if (streq(verb, "link")) { | |
99 | r = normalize_filenames(names); | |
100 | if (r < 0) | |
101 | return r; | |
102 | } | |
103 | ||
104 | if (install_client_side()) { | |
105 | UnitFileFlags flags; | |
106 | ||
107 | flags = unit_file_flags_from_args(); | |
108 | if (streq(verb, "enable")) { | |
109 | r = unit_file_enable(arg_scope, flags, arg_root, names, &changes, &n_changes); | |
110 | carries_install_info = r; | |
111 | } else if (streq(verb, "disable")) | |
112 | r = unit_file_disable(arg_scope, flags, arg_root, names, &changes, &n_changes); | |
113 | else if (streq(verb, "reenable")) { | |
114 | r = unit_file_reenable(arg_scope, flags, arg_root, names, &changes, &n_changes); | |
115 | carries_install_info = r; | |
116 | } else if (streq(verb, "link")) | |
117 | r = unit_file_link(arg_scope, flags, arg_root, names, &changes, &n_changes); | |
4f516069 | 118 | else if (streq(verb, "preset")) |
daf71ef6 | 119 | r = unit_file_preset(arg_scope, flags, arg_root, names, arg_preset_mode, &changes, &n_changes); |
4f516069 | 120 | else if (streq(verb, "mask")) |
daf71ef6 LP |
121 | r = unit_file_mask(arg_scope, flags, arg_root, names, &changes, &n_changes); |
122 | else if (streq(verb, "unmask")) | |
123 | r = unit_file_unmask(arg_scope, flags, arg_root, names, &changes, &n_changes); | |
124 | else if (streq(verb, "revert")) | |
125 | r = unit_file_revert(arg_scope, arg_root, names, &changes, &n_changes); | |
126 | else | |
04499a70 | 127 | assert_not_reached(); |
daf71ef6 LP |
128 | |
129 | unit_file_dump_changes(r, verb, changes, n_changes, arg_quiet); | |
130 | if (r < 0) | |
131 | goto finish; | |
132 | r = 0; | |
133 | } else { | |
134 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL, *m = NULL; | |
135 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
136 | bool expect_carries_install_info = false; | |
137 | bool send_runtime = true, send_force = true, send_preset_mode = false; | |
138 | const char *method; | |
139 | sd_bus *bus; | |
140 | ||
141 | if (STR_IN_SET(verb, "mask", "unmask")) { | |
daf71ef6 LP |
142 | _cleanup_(lookup_paths_free) LookupPaths lp = {}; |
143 | ||
144 | r = lookup_paths_init(&lp, arg_scope, 0, arg_root); | |
145 | if (r < 0) | |
146 | return r; | |
147 | ||
148 | STRV_FOREACH(name, names) { | |
149 | r = unit_exists(&lp, *name); | |
150 | if (r < 0) | |
151 | return r; | |
152 | if (r == 0) | |
153 | log_notice("Unit %s does not exist, proceeding anyway.", *name); | |
154 | } | |
155 | } | |
156 | ||
157 | r = acquire_bus(BUS_MANAGER, &bus); | |
158 | if (r < 0) | |
159 | return r; | |
160 | ||
161 | polkit_agent_open_maybe(); | |
162 | ||
163 | if (streq(verb, "enable")) { | |
164 | method = "EnableUnitFiles"; | |
165 | expect_carries_install_info = true; | |
166 | } else if (streq(verb, "disable")) { | |
167 | method = "DisableUnitFiles"; | |
168 | send_force = false; | |
169 | } else if (streq(verb, "reenable")) { | |
170 | method = "ReenableUnitFiles"; | |
171 | expect_carries_install_info = true; | |
172 | } else if (streq(verb, "link")) | |
173 | method = "LinkUnitFiles"; | |
174 | else if (streq(verb, "preset")) { | |
175 | ||
176 | if (arg_preset_mode != UNIT_FILE_PRESET_FULL) { | |
177 | method = "PresetUnitFilesWithMode"; | |
178 | send_preset_mode = true; | |
179 | } else | |
180 | method = "PresetUnitFiles"; | |
181 | ||
182 | expect_carries_install_info = true; | |
183 | ignore_carries_install_info = true; | |
184 | } else if (streq(verb, "mask")) | |
185 | method = "MaskUnitFiles"; | |
186 | else if (streq(verb, "unmask")) { | |
187 | method = "UnmaskUnitFiles"; | |
188 | send_force = false; | |
189 | } else if (streq(verb, "revert")) { | |
190 | method = "RevertUnitFiles"; | |
191 | send_runtime = send_force = false; | |
192 | } else | |
04499a70 | 193 | assert_not_reached(); |
daf71ef6 LP |
194 | |
195 | r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, method); | |
196 | if (r < 0) | |
197 | return bus_log_create_error(r); | |
198 | ||
199 | r = sd_bus_message_append_strv(m, names); | |
200 | if (r < 0) | |
201 | return bus_log_create_error(r); | |
202 | ||
203 | if (send_preset_mode) { | |
204 | r = sd_bus_message_append(m, "s", unit_file_preset_mode_to_string(arg_preset_mode)); | |
205 | if (r < 0) | |
206 | return bus_log_create_error(r); | |
207 | } | |
208 | ||
209 | if (send_runtime) { | |
210 | r = sd_bus_message_append(m, "b", arg_runtime); | |
211 | if (r < 0) | |
212 | return bus_log_create_error(r); | |
213 | } | |
214 | ||
215 | if (send_force) { | |
216 | r = sd_bus_message_append(m, "b", arg_force); | |
217 | if (r < 0) | |
218 | return bus_log_create_error(r); | |
219 | } | |
220 | ||
221 | r = sd_bus_call(bus, m, 0, &error, &reply); | |
222 | if (r < 0) | |
223 | return log_error_errno(r, "Failed to %s unit: %s", verb, bus_error_message(&error, r)); | |
224 | ||
225 | if (expect_carries_install_info) { | |
226 | r = sd_bus_message_read(reply, "b", &carries_install_info); | |
227 | if (r < 0) | |
228 | return bus_log_parse_error(r); | |
229 | } | |
230 | ||
231 | r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet, &changes, &n_changes); | |
232 | if (r < 0) | |
233 | goto finish; | |
234 | ||
235 | /* Try to reload if enabled */ | |
623461c1 LP |
236 | if (!arg_no_reload) { |
237 | r = daemon_reload(ACTION_RELOAD, /* graceful= */ false); | |
238 | if (r > 0) | |
239 | r = 0; | |
240 | } else | |
daf71ef6 LP |
241 | r = 0; |
242 | } | |
243 | ||
244 | if (carries_install_info == 0 && !ignore_carries_install_info) | |
245 | log_notice("The unit files have no installation config (WantedBy=, RequiredBy=, Also=,\n" | |
246 | "Alias= settings in the [Install] section, and DefaultInstance= for template\n" | |
247 | "units). This means they are not meant to be enabled using systemctl.\n" | |
248 | " \n" /* trick: the space is needed so that the line does not get stripped from output */ | |
249 | "Possible reasons for having this kind of units are:\n" | |
250 | "%1$s A unit may be statically enabled by being symlinked from another unit's\n" | |
251 | " .wants/ or .requires/ directory.\n" | |
252 | "%1$s A unit's purpose may be to act as a helper for some other unit which has\n" | |
253 | " a requirement dependency on it.\n" | |
254 | "%1$s A unit may be started when needed via activation (socket, path, timer,\n" | |
255 | " D-Bus, udev, scripted systemctl call, ...).\n" | |
256 | "%1$s In case of template units, the unit is meant to be enabled with some\n" | |
257 | " instance name specified.", | |
258 | special_glyph(SPECIAL_GLYPH_BULLET)); | |
259 | ||
260 | if (arg_now && STR_IN_SET(argv[0], "enable", "disable", "mask")) { | |
261 | sd_bus *bus; | |
262 | size_t len, i; | |
263 | ||
264 | r = acquire_bus(BUS_MANAGER, &bus); | |
265 | if (r < 0) | |
266 | goto finish; | |
267 | ||
268 | len = strv_length(names); | |
269 | { | |
270 | char *new_args[len + 2]; | |
271 | ||
272 | new_args[0] = (char*) (streq(argv[0], "enable") ? "start" : "stop"); | |
273 | for (i = 0; i < len; i++) | |
274 | new_args[i + 1] = basename(names[i]); | |
275 | new_args[i + 1] = NULL; | |
276 | ||
32baf64d | 277 | r = verb_start(len + 1, new_args, userdata); |
daf71ef6 LP |
278 | } |
279 | } | |
280 | ||
281 | finish: | |
282 | unit_file_changes_free(changes, n_changes); | |
283 | ||
284 | return r; | |
285 | } |