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Commit | Line | Data |
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cc73685d CB |
1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
2 | ||
f1a4a029 ÇO |
3 | #ifndef __LXC_CONF_H |
4 | #define __LXC_CONF_H | |
0ad19a3f | 5 | |
d38dd64a CB |
6 | #ifndef _GNU_SOURCE |
7 | #define _GNU_SOURCE 1 | |
8 | #endif | |
9e99997b | 9 | #include <linux/magic.h> |
74a2b586 | 10 | #include <net/if.h> |
1a0e70ac | 11 | #include <netinet/in.h> |
d38dd64a CB |
12 | #include <stdbool.h> |
13 | #include <stdio.h> | |
b0a33c1e | 14 | #include <sys/param.h> |
8173e600 | 15 | #include <sys/types.h> |
9e99997b CB |
16 | #include <sys/vfs.h> |
17 | ||
4822319f | 18 | #include "attach_options.h" |
d84b26bc | 19 | #include "caps.h" |
d7f19646 | 20 | #include "compiler.h" |
d38dd64a | 21 | #include "config.h" |
f2363e38 | 22 | #include "list.h" |
c3e3c21a | 23 | #include "lxcseccomp.h" |
ee91fa06 | 24 | #include "memory_utils.h" |
732375f5 | 25 | #include "ringbuf.h" |
d38dd64a | 26 | #include "start.h" |
4e86cad3 | 27 | #include "storage/storage.h" |
02efd041 | 28 | #include "string_utils.h" |
64a04c84 | 29 | #include "syscall_wrappers.h" |
0ed9b1bc | 30 | #include "terminal.h" |
e3b4c4c4 | 31 | |
d38dd64a CB |
32 | #if HAVE_SYS_RESOURCE_H |
33 | #include <sys/resource.h> | |
34 | #endif | |
35 | ||
769872f9 SH |
36 | #if HAVE_SCMP_FILTER_CTX |
37 | typedef void * scmp_filter_ctx; | |
38 | #endif | |
39 | ||
64a04c84 CB |
40 | typedef signed long personality_t; |
41 | ||
97e9cfa0 SH |
42 | /* worth moving to configure.ac? */ |
43 | #define subuidfile "/etc/subuid" | |
44 | #define subgidfile "/etc/subgid" | |
45 | ||
0ad19a3f | 46 | /* |
43654d34 CB |
47 | * Defines a generic struct to configure the control group. It is up to the |
48 | * programmer to specify the right subsystem. | |
ec64264d | 49 | * @subsystem : the targeted subsystem |
576f946d | 50 | * @value : the value to set |
54860ed0 CB |
51 | * @version : The version of the cgroup filesystem on which the controller |
52 | * resides. | |
43654d34 CB |
53 | * |
54 | * @controllers : The controllers to use for this container. | |
55 | * @dir : The name of the directory containing the container's cgroup. | |
56 | * Not that this is a per-container setting. | |
0ad19a3f | 57 | */ |
58 | struct lxc_cgroup { | |
43654d34 CB |
59 | union { |
60 | /* information about a specific controller */ | |
61 | struct /* controller */ { | |
54860ed0 | 62 | int version; |
43654d34 CB |
63 | char *subsystem; |
64 | char *value; | |
65 | }; | |
66 | ||
67 | /* meta information about cgroup configuration */ | |
68 | struct /* meta */ { | |
69 | char *controllers; | |
70 | char *dir; | |
a900cbaf | 71 | char *monitor_dir; |
7696c1f9 | 72 | char *monitor_pivot_dir; |
a900cbaf WB |
73 | char *container_dir; |
74 | char *namespace_dir; | |
9caee129 | 75 | bool relative; |
43654d34 CB |
76 | }; |
77 | }; | |
0ad19a3f | 78 | }; |
79 | ||
ee91fa06 CB |
80 | static void free_lxc_cgroup(struct lxc_cgroup *ptr) |
81 | { | |
82 | if (ptr) { | |
83 | free(ptr->subsystem); | |
84 | free(ptr->value); | |
85 | free_disarm(ptr); | |
86 | } | |
87 | } | |
88 | define_cleanup_function(struct lxc_cgroup *, free_lxc_cgroup); | |
89 | ||
c6d09e15 | 90 | #if !HAVE_SYS_RESOURCE_H |
3a0e314d | 91 | #define RLIM_INFINITY ((unsigned long)-1) |
c6d09e15 WB |
92 | struct rlimit { |
93 | unsigned long rlim_cur; | |
94 | unsigned long rlim_max; | |
95 | }; | |
96 | #endif | |
3a0e314d | 97 | |
c6d09e15 WB |
98 | /* |
99 | * Defines a structure to configure resource limits to set via setrlimit(). | |
100 | * @resource : the resource name in lowercase without the RLIMIT_ prefix | |
101 | * @limit : the limit to set | |
102 | */ | |
103 | struct lxc_limit { | |
104 | char *resource; | |
105 | struct rlimit limit; | |
106 | }; | |
107 | ||
8fa831e0 CB |
108 | static void free_lxc_limit(struct lxc_limit *ptr) |
109 | { | |
110 | if (ptr) { | |
631d2715 | 111 | free_disarm(ptr->resource); |
8fa831e0 CB |
112 | free_disarm(ptr); |
113 | } | |
114 | } | |
115 | define_cleanup_function(struct lxc_limit *, free_lxc_limit); | |
116 | ||
f6d3e3e4 SH |
117 | enum idtype { |
118 | ID_TYPE_UID, | |
119 | ID_TYPE_GID | |
120 | }; | |
121 | ||
7edd0540 L |
122 | /* |
123 | * Defines a structure to configure kernel parameters at runtime. | |
124 | * @key : the kernel parameters will be configured without the "lxc.sysctl" prefix | |
125 | * @value : the value to set | |
126 | */ | |
127 | struct lxc_sysctl { | |
128 | char *key; | |
129 | char *value; | |
130 | }; | |
131 | ||
f10c80d2 CB |
132 | static void free_lxc_sysctl(struct lxc_sysctl *ptr) |
133 | { | |
134 | if (ptr) { | |
135 | free(ptr->key); | |
136 | free(ptr->value); | |
137 | free_disarm(ptr); | |
138 | } | |
139 | } | |
140 | define_cleanup_function(struct lxc_sysctl *, free_lxc_sysctl); | |
141 | ||
61d7a733 YT |
142 | /* |
143 | * Defines a structure to configure proc filesystem at runtime. | |
144 | * @filename : the proc filesystem will be configured without the "lxc.proc" prefix | |
145 | * @value : the value to set | |
146 | */ | |
147 | struct lxc_proc { | |
148 | char *filename; | |
149 | char *value; | |
150 | }; | |
151 | ||
83332c24 CB |
152 | static void free_lxc_proc(struct lxc_proc *ptr) |
153 | { | |
154 | if (ptr) { | |
155 | free(ptr->filename); | |
156 | free(ptr->value); | |
157 | free_disarm(ptr); | |
158 | } | |
159 | } | |
160 | define_cleanup_function(struct lxc_proc *, free_lxc_proc); | |
161 | ||
f6d3e3e4 SH |
162 | /* |
163 | * id_map is an id map entry. Form in confile is: | |
bdcbb6b3 CB |
164 | * lxc.idmap = u 0 9800 100 |
165 | * lxc.idmap = u 1000 9900 100 | |
166 | * lxc.idmap = g 0 9800 100 | |
167 | * lxc.idmap = g 1000 9900 100 | |
251d0d2a DE |
168 | * meaning the container can use uids and gids 0-99 and 1000-1099, |
169 | * with [ug]id 0 mapping to [ug]id 9800 on the host, and [ug]id 1000 to | |
170 | * [ug]id 9900 on the host. | |
f6d3e3e4 SH |
171 | */ |
172 | struct id_map { | |
173 | enum idtype idtype; | |
251d0d2a | 174 | unsigned long hostid, nsid, range; |
f6d3e3e4 SH |
175 | }; |
176 | ||
0e4be3cf | 177 | /* Defines the number of tty configured and contains the |
a589434e | 178 | * instantiated ptys |
885766f5 | 179 | * @max = number of configured ttys |
b0a33c1e | 180 | */ |
181 | struct lxc_tty_info { | |
885766f5 CB |
182 | size_t max; |
183 | char *dir; | |
184 | char *tty_names; | |
2520facd | 185 | struct lxc_terminal_info *tty; |
b0a33c1e | 186 | }; |
187 | ||
0b932f9d CB |
188 | typedef enum lxc_mount_options_t { |
189 | LXC_MOUNT_CREATE_DIR = 0, | |
190 | LXC_MOUNT_CREATE_FILE = 1, | |
191 | LXC_MOUNT_OPTIONAL = 2, | |
192 | LXC_MOUNT_RELATIVE = 3, | |
f6815906 CB |
193 | LXC_MOUNT_IDMAP = 4, |
194 | LXC_MOUNT_MAX = 5, | |
0b932f9d CB |
195 | } lxc_mount_options_t; |
196 | ||
197 | __hidden extern const char *lxc_mount_options_info[LXC_MOUNT_MAX]; | |
198 | ||
199 | struct lxc_mount_options { | |
2df612d4 CB |
200 | unsigned int create_dir : 1; |
201 | unsigned int create_file : 1; | |
202 | unsigned int optional : 1; | |
203 | unsigned int relative : 1; | |
204 | unsigned int recursive : 1; | |
205 | unsigned int bind : 1; | |
f6815906 | 206 | char userns_path[PATH_MAX]; |
423374e9 CB |
207 | unsigned long mnt_flags; |
208 | unsigned long prop_flags; | |
209 | char *data; | |
1b82d721 | 210 | struct lxc_mount_attr attr; |
0b932f9d CB |
211 | }; |
212 | ||
13bb312d | 213 | /* Defines a structure to store the rootfs location, the |
33fcb7a0 | 214 | * optionals pivot_root, rootfs mount paths |
953db219 CB |
215 | * @path : the rootfs source (directory or device) |
216 | * @mount : where it is mounted | |
952b5031 | 217 | * @buf : static buffer to construct paths |
953db219 CB |
218 | * @bev_type : optional backing store type |
219 | * @options : mount options | |
953db219 | 220 | * @managed : whether it is managed by LXC |
ea57e424 | 221 | * @dfd_mnt : fd for @mount |
a5a08920 | 222 | * @dfd_dev : fd for /dev of the container |
33fcb7a0 DL |
223 | */ |
224 | struct lxc_rootfs { | |
ea11a215 | 225 | int dfd_host; |
79ff643d | 226 | |
33fcb7a0 | 227 | char *path; |
79ff643d | 228 | int fd_path_pin; |
4b875ef9 | 229 | int dfd_idmapped; |
79ff643d CB |
230 | |
231 | int dfd_mnt; | |
23b7ea69 | 232 | char *mount; |
79ff643d CB |
233 | |
234 | int dfd_dev; | |
235 | ||
952b5031 | 236 | char buf[PATH_MAX]; |
b3b8c97f | 237 | char *bdev_type; |
3437f95c CB |
238 | char *options; |
239 | unsigned long mountflags; | |
6e54330c | 240 | bool managed; |
0b932f9d | 241 | struct lxc_mount_options mnt_opts; |
4e86cad3 | 242 | struct lxc_storage *storage; |
33fcb7a0 DL |
243 | }; |
244 | ||
368bbc02 CS |
245 | /* |
246 | * Automatic mounts for LXC to perform inside the container | |
247 | */ | |
248 | enum { | |
3a0e314d CB |
249 | LXC_AUTO_PROC_RW = 0x001, /* /proc read-write */ |
250 | LXC_AUTO_PROC_MIXED = 0x002, /* /proc/sys and /proc/sysrq-trigger read-only */ | |
b06b8511 CS |
251 | LXC_AUTO_PROC_MASK = 0x003, |
252 | ||
3a0e314d CB |
253 | LXC_AUTO_SYS_RW = 0x004, /* /sys */ |
254 | LXC_AUTO_SYS_RO = 0x008, /* /sys read-only */ | |
255 | LXC_AUTO_SYS_MIXED = 0x00C, /* /sys read-only and /sys/class/net read-write */ | |
b06b8511 CS |
256 | LXC_AUTO_SYS_MASK = 0x00C, |
257 | ||
3a0e314d CB |
258 | LXC_AUTO_CGROUP_RO = 0x010, /* /sys/fs/cgroup (partial mount, read-only) */ |
259 | LXC_AUTO_CGROUP_RW = 0x020, /* /sys/fs/cgroup (partial mount, read-write) */ | |
260 | LXC_AUTO_CGROUP_MIXED = 0x030, /* /sys/fs/cgroup (partial mount, paths r/o, cgroup r/w) */ | |
261 | LXC_AUTO_CGROUP_FULL_RO = 0x040, /* /sys/fs/cgroup (full mount, read-only) */ | |
262 | LXC_AUTO_CGROUP_FULL_RW = 0x050, /* /sys/fs/cgroup (full mount, read-write) */ | |
263 | LXC_AUTO_CGROUP_FULL_MIXED = 0x060, /* /sys/fs/cgroup (full mount, parent r/o, own r/w) */ | |
264 | /* | |
265 | * These are defined in such a way as to retain binary compatibility | |
266 | * with earlier versions of this code. If the previous mask is applied, | |
267 | * both of these will default back to the _MIXED variants, which is | |
268 | * safe. | |
269 | */ | |
270 | LXC_AUTO_CGROUP_NOSPEC = 0x0B0, /* /sys/fs/cgroup (partial mount, r/w or mixed, depending on caps) */ | |
271 | LXC_AUTO_CGROUP_FULL_NOSPEC = 0x0E0, /* /sys/fs/cgroup (full mount, r/w or mixed, depending on caps) */ | |
272 | LXC_AUTO_CGROUP_FORCE = 0x100, /* mount cgroups even when cgroup namespaces are supported */ | |
6cc501f3 | 273 | LXC_AUTO_CGROUP_MASK = 0x1F0, /* all known cgroup options */ |
adf0ba1f LT |
274 | |
275 | LXC_AUTO_SHMOUNTS = 0x200, /* shared mount point */ | |
276 | LXC_AUTO_SHMOUNTS_MASK = 0x200, /* shared mount point mask */ | |
3a0e314d | 277 | LXC_AUTO_ALL_MASK = 0x1FF, /* all known settings */ |
368bbc02 CS |
278 | }; |
279 | ||
26ddeedd | 280 | enum lxchooks { |
1a0e70ac CB |
281 | LXCHOOK_PRESTART, |
282 | LXCHOOK_PREMOUNT, | |
283 | LXCHOOK_MOUNT, | |
284 | LXCHOOK_AUTODEV, | |
285 | LXCHOOK_START, | |
286 | LXCHOOK_STOP, | |
287 | LXCHOOK_POSTSTOP, | |
288 | LXCHOOK_CLONE, | |
289 | LXCHOOK_DESTROY, | |
08dd2805 | 290 | LXCHOOK_START_HOST, |
1a0e70ac CB |
291 | NUM_LXC_HOOKS |
292 | }; | |
72d0e1cb | 293 | |
59eac805 | 294 | __hidden extern char *lxchook_names[NUM_LXC_HOOKS]; |
7b35f3d6 | 295 | |
d39b10eb CB |
296 | struct lxc_state_client { |
297 | int clientfd; | |
298 | lxc_state_t states[MAX_STATE]; | |
299 | }; | |
300 | ||
4b9dc703 | 301 | typedef enum lxc_bpf_devices_rule_t { |
4b9dc703 CB |
302 | LXC_BPF_DEVICE_CGROUP_ALLOWLIST = 0, |
303 | LXC_BPF_DEVICE_CGROUP_DENYLIST = 1, | |
304 | } lxc_bpf_devices_rule_t; | |
fda39d45 | 305 | |
4bfb655e CB |
306 | struct device_item { |
307 | char type; | |
308 | int major; | |
309 | int minor; | |
310 | char access[4]; | |
311 | int allow; | |
a134099d CB |
312 | }; |
313 | ||
314 | struct bpf_devices { | |
315 | lxc_bpf_devices_rule_t list_type; | |
316 | struct lxc_list device_item; | |
4bfb655e CB |
317 | }; |
318 | ||
70fd7fc9 CB |
319 | struct timens_offsets { |
320 | /* Currently, either s_boot or ns_boot is set, but not both. */ | |
321 | int64_t s_boot; | |
322 | int64_t ns_boot; | |
323 | ||
324 | /* Currently, either s_monotonic or ns_monotonic is set, but not both. */ | |
325 | int64_t s_monotonic; | |
326 | int64_t ns_monotonic; | |
327 | }; | |
328 | ||
571e6ec8 | 329 | struct lxc_conf { |
c7b17051 CB |
330 | /* Pointer to the name of the container. Do not free! */ |
331 | const char *name; | |
07c4ea31 | 332 | bool is_execute; |
91480a0f | 333 | int reboot; |
64a04c84 | 334 | personality_t personality; |
571e6ec8 | 335 | struct utsname *utsname; |
edd64e17 | 336 | |
54860ed0 CB |
337 | struct { |
338 | struct lxc_list cgroup; | |
339 | struct lxc_list cgroup2; | |
a134099d | 340 | struct bpf_devices bpf_devices; |
54860ed0 | 341 | }; |
edd64e17 | 342 | |
46ad64ab CB |
343 | struct { |
344 | struct lxc_list id_map; | |
c7e345ae | 345 | |
edd64e17 CB |
346 | /* |
347 | * Pointer to the idmap entry for the container's root uid in | |
348 | * the id_map list. Do not free! | |
349 | */ | |
5173b710 | 350 | const struct id_map *root_nsuid_map; |
c7e345ae | 351 | |
edd64e17 CB |
352 | /* |
353 | * Pointer to the idmap entry for the container's root gid in | |
354 | * the id_map list. Do not free! | |
355 | */ | |
5173b710 | 356 | const struct id_map *root_nsgid_map; |
46ad64ab | 357 | }; |
edd64e17 | 358 | |
5f4535a3 | 359 | struct lxc_list network; |
448d7b0c CB |
360 | |
361 | struct { | |
362 | char *fstab; | |
363 | int auto_mounts; | |
364 | struct lxc_list mount_list; | |
365 | }; | |
366 | ||
81810dd1 | 367 | struct lxc_list caps; |
1fb86a7c | 368 | struct lxc_list keepcaps; |
885766f5 | 369 | |
a2db71c0 | 370 | /* /dev/tty<idx> devices */ |
885766f5 | 371 | struct lxc_tty_info ttys; |
a2db71c0 CB |
372 | /* /dev/console device */ |
373 | struct lxc_terminal console; | |
374 | /* maximum pty devices allowed by devpts mount */ | |
e528c735 | 375 | size_t pty_max; |
f797f05e CB |
376 | /* file descriptor for the container's /dev/pts mount */ |
377 | int devpts_fd; | |
885766f5 | 378 | |
32fd6cf3 CB |
379 | /* set to true when rootfs has been setup */ |
380 | bool rootfs_setup; | |
33fcb7a0 | 381 | struct lxc_rootfs rootfs; |
32fd6cf3 | 382 | |
b3187a81 | 383 | bool close_all_fds; |
44ae0fb6 CB |
384 | |
385 | struct { | |
386 | unsigned int hooks_version; | |
387 | struct lxc_list hooks[NUM_LXC_HOOKS]; | |
388 | }; | |
4a85ce2a | 389 | |
fe4de9a6 | 390 | char *lsm_aa_profile; |
1800f924 WB |
391 | char *lsm_aa_profile_computed; |
392 | bool lsm_aa_profile_created; | |
393 | unsigned int lsm_aa_allow_nesting; | |
a56e2df9 | 394 | unsigned int lsm_aa_allow_incomplete; |
1800f924 | 395 | struct lxc_list lsm_aa_raw; |
fe4de9a6 | 396 | char *lsm_se_context; |
4fef78bc | 397 | char *lsm_se_keyring_context; |
8f818a84 | 398 | bool keyring_disable_session; |
952b5031 | 399 | bool transient_procfs_mnt; |
c3e3c21a | 400 | struct lxc_seccomp seccomp; |
72d0e1cb | 401 | int maincmd_fd; |
1a0e70ac | 402 | unsigned int autodev; /* if 1, mount and fill a /dev at start */ |
63012bdd | 403 | int autodevtmpfssize; /* size of the /dev tmpfs */ |
1a0e70ac CB |
404 | int haltsignal; /* signal used to halt container */ |
405 | int rebootsignal; /* signal used to reboot container */ | |
406 | int stopsignal; /* signal used to hard stop container */ | |
407 | char *rcfile; /* Copy of the top level rcfile we read */ | |
408 | ||
b9949538 | 409 | /* Logfile and loglevel can be set in a container config file. Those |
7b660465 | 410 | * function as defaults. The defaults can be overridden by command line. |
1a0e70ac CB |
411 | * However we don't want the command line specified values to be saved |
412 | * on c->save_config(). So we store the config file specified values | |
413 | * here. */ | |
98020c31 JS |
414 | char *logfile; /* the logfile as specified in config */ |
415 | int loglevel; /* loglevel as specified in config (if any) */ | |
858377e4 | 416 | int logfd; |
9f30a190 | 417 | |
3590152f CB |
418 | unsigned int start_auto; |
419 | unsigned int start_delay; | |
ee1e7aa0 SG |
420 | int start_order; |
421 | struct lxc_list groups; | |
76a26f55 | 422 | int nbd_idx; |
35120d9c | 423 | |
a8dfe4e0 | 424 | /* unshare the mount namespace in the monitor */ |
226dc30e | 425 | unsigned int monitor_unshare; |
258f8051 | 426 | unsigned int monitor_signal_pdeath; |
a8dfe4e0 | 427 | |
f979ac15 SH |
428 | /* list of included files */ |
429 | struct lxc_list includes; | |
4184c3e1 SH |
430 | /* config entries which are not "lxc.*" are aliens */ |
431 | struct lxc_list aliens; | |
7c661726 MP |
432 | |
433 | /* list of environment variables we'll add to the container when | |
434 | * started */ | |
435 | struct lxc_list environment; | |
6b0d5538 SH |
436 | |
437 | /* text representation of the config file */ | |
438 | char *unexpanded_config; | |
32fd6cf3 CB |
439 | size_t unexpanded_len; |
440 | size_t unexpanded_alloced; | |
67c660d0 | 441 | |
5cda27c1 SH |
442 | /* default command for lxc-execute */ |
443 | char *execute_cmd; | |
444 | ||
67c660d0 SG |
445 | /* init command */ |
446 | char *init_cmd; | |
56f8ff00 | 447 | |
4822319f | 448 | /* The uid to use for the container. */ |
c5cd20ce | 449 | uid_t init_uid; |
4822319f | 450 | /* The gid to use for the container. */ |
c5cd20ce | 451 | gid_t init_gid; |
4822319f CB |
452 | /* The groups to use for the container. */ |
453 | lxc_groups_t init_groups; | |
8796becf CB |
454 | |
455 | /* indicator if the container will be destroyed on shutdown */ | |
66ffdb1a | 456 | unsigned int ephemeral; |
76d0127f CB |
457 | |
458 | /* The facility to pass to syslog. Let's users establish as what type of | |
459 | * program liblxc is supposed to write to the syslog. */ | |
460 | char *syslog; | |
5a46f283 CB |
461 | |
462 | /* Whether PR_SET_NO_NEW_PRIVS will be set for the container. */ | |
463 | bool no_new_privs; | |
c6d09e15 WB |
464 | |
465 | /* RLIMIT_* limits */ | |
466 | struct lxc_list limits; | |
7ec2e32a | 467 | |
43654d34 CB |
468 | /* Contains generic info about the cgroup configuration for this |
469 | * container. Note that struct lxc_cgroup contains a union. It is only | |
470 | * valid to access the members of the anonymous "meta" struct within | |
471 | * that union. | |
472 | */ | |
473 | struct lxc_cgroup cgroup_meta; | |
28d9e29e | 474 | |
b074bbf1 | 475 | struct { |
1d8d3676 | 476 | int ns_clone; |
abeb5bba | 477 | int ns_keep; |
b074bbf1 CB |
478 | char *ns_share[LXC_NS_MAX]; |
479 | }; | |
3c491553 L |
480 | |
481 | /* init working directory */ | |
9e132956 | 482 | char *init_cwd; |
3c491553 | 483 | |
d39b10eb CB |
484 | /* A list of clients registered to be informed about a container state. */ |
485 | struct lxc_list state_clients; | |
7edd0540 L |
486 | |
487 | /* sysctls */ | |
488 | struct lxc_list sysctls; | |
61d7a733 YT |
489 | |
490 | /* procs */ | |
491 | struct lxc_list procs; | |
adf0ba1f | 492 | |
7a41e857 | 493 | struct shmount { |
adf0ba1f LT |
494 | /* Absolute path to the shared mount point on the host */ |
495 | char *path_host; | |
496 | /* Absolute path (in the container) to the shared mount point */ | |
497 | char *path_cont; | |
7a41e857 | 498 | } shmount; |
70fd7fc9 CB |
499 | |
500 | struct timens_offsets timens; | |
571e6ec8 DL |
501 | }; |
502 | ||
efb7e304 CB |
503 | __hidden extern int write_id_mapping(enum idtype idtype, pid_t pid, const char *buf, size_t buf_size) |
504 | __access_r(3, 4); | |
344c9d81 | 505 | |
d7f19646 | 506 | extern thread_local struct lxc_conf *current_config; |
858377e4 | 507 | |
efb7e304 CB |
508 | __hidden extern int run_lxc_hooks(const char *name, char *hook, struct lxc_conf *conf, char *argv[]); |
509 | __hidden extern struct lxc_conf *lxc_conf_init(void); | |
510 | __hidden extern void lxc_conf_free(struct lxc_conf *conf); | |
4e86cad3 CB |
511 | __hidden extern int lxc_storage_prepare(struct lxc_conf *conf); |
512 | __hidden extern int lxc_rootfs_prepare(struct lxc_conf *conf, bool userns); | |
513 | __hidden extern void lxc_storage_put(struct lxc_conf *conf); | |
239f29c9 | 514 | __hidden extern int lxc_rootfs_init(struct lxc_conf *conf, bool userns); |
4b875ef9 | 515 | __hidden extern int lxc_rootfs_prepare_parent(struct lxc_handler *handler); |
1b82d721 | 516 | __hidden extern int lxc_idmapped_mounts_parent(struct lxc_handler *handler); |
efb7e304 CB |
517 | __hidden extern int lxc_map_ids(struct lxc_list *idmap, pid_t pid); |
518 | __hidden extern int lxc_create_tty(const char *name, struct lxc_conf *conf); | |
519 | __hidden extern void lxc_delete_tty(struct lxc_tty_info *ttys); | |
520 | __hidden extern int lxc_clear_config_caps(struct lxc_conf *c); | |
521 | __hidden extern int lxc_clear_config_keepcaps(struct lxc_conf *c); | |
522 | __hidden extern int lxc_clear_cgroups(struct lxc_conf *c, const char *key, int version); | |
523 | __hidden extern int lxc_clear_mount_entries(struct lxc_conf *c); | |
524 | __hidden extern int lxc_clear_automounts(struct lxc_conf *c); | |
525 | __hidden extern int lxc_clear_hooks(struct lxc_conf *c, const char *key); | |
526 | __hidden extern int lxc_clear_idmaps(struct lxc_conf *c); | |
527 | __hidden extern int lxc_clear_groups(struct lxc_conf *c); | |
528 | __hidden extern int lxc_clear_environment(struct lxc_conf *c); | |
529 | __hidden extern int lxc_clear_limits(struct lxc_conf *c, const char *key); | |
530 | __hidden extern int lxc_delete_autodev(struct lxc_handler *handler); | |
531 | __hidden extern int lxc_clear_autodev_tmpfs_size(struct lxc_conf *c); | |
532 | __hidden extern void lxc_clear_includes(struct lxc_conf *conf); | |
533 | __hidden extern int lxc_setup_rootfs_prepare_root(struct lxc_conf *conf, const char *name, | |
534 | const char *lxcpath); | |
535 | __hidden extern int lxc_setup(struct lxc_handler *handler); | |
536 | __hidden extern int lxc_setup_parent(struct lxc_handler *handler); | |
537 | __hidden extern int setup_resource_limits(struct lxc_list *limits, pid_t pid); | |
538 | __hidden extern int find_unmapped_nsid(const struct lxc_conf *conf, enum idtype idtype); | |
539 | __hidden extern int mapped_hostid(unsigned id, const struct lxc_conf *conf, enum idtype idtype); | |
540 | __hidden extern int userns_exec_1(const struct lxc_conf *conf, int (*fn)(void *), void *data, | |
541 | const char *fn_name); | |
542 | __hidden extern int userns_exec_full(struct lxc_conf *conf, int (*fn)(void *), void *data, | |
543 | const char *fn_name); | |
d94eb390 | 544 | __hidden extern int parse_mntopts_legacy(const char *mntopts, unsigned long *mntflags, char **mntdata); |
efb7e304 | 545 | __hidden extern int parse_propagationopts(const char *mntopts, unsigned long *pflags); |
1b82d721 | 546 | __hidden extern int parse_lxc_mount_attrs(struct lxc_mount_options *opts, char *mnt_opts); |
efb7e304 | 547 | __hidden extern void tmp_proc_unmount(struct lxc_conf *lxc_conf); |
efb7e304 CB |
548 | __hidden extern void suggest_default_idmap(void); |
549 | __hidden extern FILE *make_anonymous_mount_file(struct lxc_list *mount, bool include_nesting_helpers); | |
550 | __hidden extern struct lxc_list *sort_cgroup_settings(struct lxc_list *cgroup_settings); | |
efb7e304 CB |
551 | __hidden extern int run_script(const char *name, const char *section, const char *script, ...); |
552 | __hidden extern int run_script_argv(const char *name, unsigned int hook_version, const char *section, | |
553 | const char *script, const char *hookname, char **argsin); | |
554 | __hidden extern int in_caplist(int cap, struct lxc_list *caps); | |
309ae287 | 555 | |
d84b26bc | 556 | static inline bool lxc_wants_cap(int cap, struct lxc_conf *conf) |
309ae287 | 557 | { |
d84b26bc CB |
558 | if (lxc_caps_last_cap() < cap) |
559 | return false; | |
560 | ||
309ae287 | 561 | if (!lxc_list_empty(&conf->keepcaps)) |
5d1bf4c4 | 562 | return in_caplist(cap, &conf->keepcaps); |
309ae287 | 563 | |
5d1bf4c4 | 564 | return !in_caplist(cap, &conf->caps); |
309ae287 CB |
565 | } |
566 | ||
efb7e304 CB |
567 | __hidden extern int setup_sysctl_parameters(struct lxc_list *sysctls); |
568 | __hidden extern int lxc_clear_sysctls(struct lxc_conf *c, const char *key); | |
569 | __hidden extern int setup_proc_filesystem(struct lxc_list *procs, pid_t pid); | |
570 | __hidden extern int lxc_clear_procs(struct lxc_conf *c, const char *key); | |
571 | __hidden extern int lxc_clear_apparmor_raw(struct lxc_conf *c); | |
572 | __hidden extern int lxc_clear_namespace(struct lxc_conf *c); | |
573 | __hidden extern int userns_exec_minimal(const struct lxc_conf *conf, int (*fn_parent)(void *), | |
574 | void *fn_parent_data, int (*fn_child)(void *), | |
575 | void *fn_child_data); | |
576 | __hidden extern int userns_exec_mapped_root(const char *path, int path_fd, | |
577 | const struct lxc_conf *conf); | |
6e1a327a CB |
578 | static inline int chown_mapped_root(const char *path, const struct lxc_conf *conf) |
579 | { | |
580 | return userns_exec_mapped_root(path, -EBADF, conf); | |
581 | } | |
5ae72b98 | 582 | |
493ae3fe | 583 | __hidden extern int lxc_sync_fds_parent(struct lxc_handler *handler); |
111ed96e | 584 | __hidden extern int lxc_sync_fds_child(struct lxc_handler *handler); |
68f3899e | 585 | |
02efd041 CB |
586 | static inline const char *get_rootfs_mnt(const struct lxc_rootfs *rootfs) |
587 | { | |
588 | static const char *s = "/"; | |
589 | ||
590 | return !is_empty_string(rootfs->path) ? rootfs->mount : s; | |
591 | } | |
592 | ||
423374e9 CB |
593 | static inline void put_lxc_mount_options(struct lxc_mount_options *mnt_opts) |
594 | { | |
595 | mnt_opts->create_dir = 0; | |
596 | mnt_opts->create_file = 0; | |
597 | mnt_opts->optional = 0; | |
598 | mnt_opts->relative = 0; | |
599 | mnt_opts->userns_path[0] = '\0'; | |
600 | mnt_opts->mnt_flags = 0; | |
601 | mnt_opts->prop_flags = 0; | |
602 | ||
423374e9 CB |
603 | free_disarm(mnt_opts->data); |
604 | } | |
605 | ||
79ff643d CB |
606 | static inline void put_lxc_rootfs(struct lxc_rootfs *rootfs, bool unpin) |
607 | { | |
608 | if (rootfs) { | |
609 | close_prot_errno_disarm(rootfs->dfd_host); | |
610 | close_prot_errno_disarm(rootfs->dfd_mnt); | |
611 | close_prot_errno_disarm(rootfs->dfd_dev); | |
612 | if (unpin) | |
613 | close_prot_errno_disarm(rootfs->fd_path_pin); | |
4b875ef9 | 614 | close_prot_errno_disarm(rootfs->dfd_idmapped); |
423374e9 | 615 | put_lxc_mount_options(&rootfs->mnt_opts); |
4e86cad3 CB |
616 | storage_put(rootfs->storage); |
617 | rootfs->storage = NULL; | |
79ff643d CB |
618 | } |
619 | } | |
620 | ||
a7744f12 CB |
621 | static inline void lxc_clear_cgroup2_devices(struct bpf_devices *bpf_devices) |
622 | { | |
623 | struct lxc_list *list = &bpf_devices->device_item; | |
624 | struct lxc_list *it, *next; | |
625 | ||
626 | lxc_list_for_each_safe (it, list, next) { | |
627 | lxc_list_del(it); | |
628 | free(it); | |
629 | } | |
630 | ||
631 | lxc_list_init(&bpf_devices->device_item); | |
632 | } | |
633 | ||
64a04c84 CB |
634 | static inline int lxc_personality(personality_t persona) |
635 | { | |
636 | if (persona < 0) | |
637 | return ret_errno(EINVAL); | |
638 | ||
639 | return personality(persona); | |
640 | } | |
641 | ||
1a0e70ac | 642 | #endif /* __LXC_CONF_H */ |