summaryrefslogtreecommitdiff
path: root/src/shared/install.h
blob: 82c62095d509989bb94a495ada2d4285693be024 (plain)
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
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
#pragma once

/***
  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/>.
***/

typedef enum UnitFileScope UnitFileScope;
typedef enum UnitFileState UnitFileState;
typedef enum UnitFilePresetMode UnitFilePresetMode;
typedef enum UnitFileChangeType UnitFileChangeType;
typedef enum UnitFileType UnitFileType;
typedef struct UnitFileChange UnitFileChange;
typedef struct UnitFileList UnitFileList;
typedef struct UnitFileInstallInfo UnitFileInstallInfo;

#include <stdbool.h>

#include "hashmap.h"
#include "macro.h"
#include "path-lookup.h"
#include "strv.h"
#include "unit-name.h"

enum UnitFileScope {
        UNIT_FILE_SYSTEM,
        UNIT_FILE_GLOBAL,
        UNIT_FILE_USER,
        _UNIT_FILE_SCOPE_MAX,
        _UNIT_FILE_SCOPE_INVALID = -1
};

enum UnitFileState {
        UNIT_FILE_ENABLED,
        UNIT_FILE_ENABLED_RUNTIME,
        UNIT_FILE_LINKED,
        UNIT_FILE_LINKED_RUNTIME,
        UNIT_FILE_MASKED,
        UNIT_FILE_MASKED_RUNTIME,
        UNIT_FILE_STATIC,
        UNIT_FILE_DISABLED,
        UNIT_FILE_INDIRECT,
        UNIT_FILE_GENERATED,
        UNIT_FILE_TRANSIENT,
        UNIT_FILE_BAD,
        _UNIT_FILE_STATE_MAX,
        _UNIT_FILE_STATE_INVALID = -1
};

enum UnitFilePresetMode {
        UNIT_FILE_PRESET_FULL,
        UNIT_FILE_PRESET_ENABLE_ONLY,
        UNIT_FILE_PRESET_DISABLE_ONLY,
        _UNIT_FILE_PRESET_MAX,
        _UNIT_FILE_PRESET_INVALID = -1
};

enum UnitFileChangeType {
        UNIT_FILE_SYMLINK,
        UNIT_FILE_UNLINK,
        UNIT_FILE_IS_MASKED,
        _UNIT_FILE_CHANGE_TYPE_MAX,
        _UNIT_FILE_CHANGE_TYPE_INVALID = -1
};

/* type can either one of the UnitFileChangeTypes listed above, or a negative error.
 * If source is specified, it should be the contents of the path symlink.
 * In case of an error, source should be the existing symlink contents or NULL
 */
struct UnitFileChange {
        int type; /* UnitFileChangeType or bust */
        char *path;
        char *source;
};

static inline bool unit_file_changes_have_modification(const UnitFileChange* changes, unsigned n_changes) {
        unsigned i;
        for (i = 0; i < n_changes; i++)
                if (IN_SET(changes[i].type, UNIT_FILE_SYMLINK, UNIT_FILE_UNLINK))
                        return true;
        return false;
}

struct UnitFileList {
        char *path;
        UnitFileState state;
};

enum UnitFileType {
        UNIT_FILE_TYPE_REGULAR,
        UNIT_FILE_TYPE_SYMLINK,
        UNIT_FILE_TYPE_MASKED,
        _UNIT_FILE_TYPE_MAX,
        _UNIT_FILE_TYPE_INVALID = -1,
};

struct UnitFileInstallInfo {
        char *name;
        char *path;

        char **aliases;
        char **wanted_by;
        char **required_by;
        char **also;

        char *default_instance;

        UnitFileType type;

        char *symlink_target;
};

static inline bool UNIT_FILE_INSTALL_INFO_HAS_RULES(UnitFileInstallInfo *i) {
        assert(i);

        return !strv_isempty(i->aliases) ||
               !strv_isempty(i->wanted_by) ||
               !strv_isempty(i->required_by);
}

static inline bool UNIT_FILE_INSTALL_INFO_HAS_ALSO(UnitFileInstallInfo *i) {
        assert(i);

        return !strv_isempty(i->also);
}

int unit_file_enable(
                UnitFileScope scope,
                bool runtime,
                const char *root_dir,
                char **files,
                bool force,
                UnitFileChange **changes,
                unsigned *n_changes);
int unit_file_disable(
                UnitFileScope scope,
                bool runtime,
                const char *root_dir,
                char **files,
                UnitFileChange **changes,
                unsigned *n_changes);
int unit_file_reenable(
                UnitFileScope scope,
                bool runtime,
                const char *root_dir,
                char **files,
                bool force,
                UnitFileChange **changes,
                unsigned *n_changes);
int unit_file_preset(
                UnitFileScope scope,
                bool runtime,
                const char *root_dir,
                char **files,
                UnitFilePresetMode mode,
                bool force,
                UnitFileChange **changes,
                unsigned *n_changes);
int unit_file_preset_all(
                UnitFileScope scope,
                bool runtime,
                const char *root_dir,
                UnitFilePresetMode mode,
                bool force,
                UnitFileChange **changes,
                unsigned *n_changes);
int unit_file_mask(
                UnitFileScope scope,
                bool runtime,
                const char *root_dir,
                char **files,
                bool force,
                UnitFileChange **changes,
                unsigned *n_changes);
int unit_file_unmask(
                UnitFileScope scope,
                bool runtime,
                const char *root_dir,
                char **files,
                UnitFileChange **changes,
                unsigned *n_changes);
int unit_file_link(
                UnitFileScope scope,
                bool runtime,
                const char *root_dir,
                char **files,
                bool force,
                UnitFileChange **changes,
                unsigned *n_changes);
int unit_file_revert(
                UnitFileScope scope,
                const char *root_dir,
                char **files,
                UnitFileChange **changes,
                unsigned *n_changes);
int unit_file_set_default(
                UnitFileScope scope,
                const char *root_dir,
                const char *file,
                bool force,
                UnitFileChange **changes,
                unsigned *n_changes);
int unit_file_get_default(
                UnitFileScope scope,
                const char *root_dir,
                char **name);
int unit_file_add_dependency(
                UnitFileScope scope,
                bool runtime,
                const char *root_dir,
                char **files,
                const char *target,
                UnitDependency dep,
                bool force,
                UnitFileChange **changes,
                unsigned *n_changes);

int unit_file_get_state(UnitFileScope scope, const char *root_dir, const char *filename, UnitFileState *ret);
int unit_file_exists(UnitFileScope scope, const LookupPaths *paths, const char *name);

int unit_file_get_list(UnitFileScope scope, const char *root_dir, Hashmap *h);
Hashmap* unit_file_list_free(Hashmap *h);

int unit_file_changes_add(UnitFileChange **changes, unsigned *n_changes, UnitFileChangeType type, const char *path, const char *source);
void unit_file_changes_free(UnitFileChange *changes, unsigned n_changes);
void unit_file_dump_changes(int r, const char *verb, const UnitFileChange *changes, unsigned n_changes, bool quiet);

int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char *name);

const char *unit_file_state_to_string(UnitFileState s) _const_;
UnitFileState unit_file_state_from_string(const char *s) _pure_;

const char *unit_file_change_type_to_string(UnitFileChangeType s) _const_;
UnitFileChangeType unit_file_change_type_from_string(const char *s) _pure_;

const char *unit_file_preset_mode_to_string(UnitFilePresetMode m) _const_;
UnitFilePresetMode unit_file_preset_mode_from_string(const char *s) _pure_;