]>
Commit | Line | Data |
---|---|---|
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" |
0ed9b1bc | 29 | #include "terminal.h" |
e3b4c4c4 | 30 | |
d38dd64a CB |
31 | #if HAVE_SYS_RESOURCE_H |
32 | #include <sys/resource.h> | |
33 | #endif | |
34 | ||
769872f9 SH |
35 | #if HAVE_SCMP_FILTER_CTX |
36 | typedef void * scmp_filter_ctx; | |
37 | #endif | |
38 | ||
97e9cfa0 SH |
39 | /* worth moving to configure.ac? */ |
40 | #define subuidfile "/etc/subuid" | |
41 | #define subgidfile "/etc/subgid" | |
42 | ||
0ad19a3f | 43 | /* |
43654d34 CB |
44 | * Defines a generic struct to configure the control group. It is up to the |
45 | * programmer to specify the right subsystem. | |
ec64264d | 46 | * @subsystem : the targeted subsystem |
576f946d | 47 | * @value : the value to set |
54860ed0 CB |
48 | * @version : The version of the cgroup filesystem on which the controller |
49 | * resides. | |
43654d34 CB |
50 | * |
51 | * @controllers : The controllers to use for this container. | |
52 | * @dir : The name of the directory containing the container's cgroup. | |
53 | * Not that this is a per-container setting. | |
0ad19a3f | 54 | */ |
55 | struct lxc_cgroup { | |
43654d34 CB |
56 | union { |
57 | /* information about a specific controller */ | |
58 | struct /* controller */ { | |
54860ed0 | 59 | int version; |
43654d34 CB |
60 | char *subsystem; |
61 | char *value; | |
62 | }; | |
63 | ||
64 | /* meta information about cgroup configuration */ | |
65 | struct /* meta */ { | |
66 | char *controllers; | |
67 | char *dir; | |
a900cbaf | 68 | char *monitor_dir; |
7696c1f9 | 69 | char *monitor_pivot_dir; |
a900cbaf WB |
70 | char *container_dir; |
71 | char *namespace_dir; | |
9caee129 | 72 | bool relative; |
43654d34 CB |
73 | }; |
74 | }; | |
0ad19a3f | 75 | }; |
76 | ||
ee91fa06 CB |
77 | static void free_lxc_cgroup(struct lxc_cgroup *ptr) |
78 | { | |
79 | if (ptr) { | |
80 | free(ptr->subsystem); | |
81 | free(ptr->value); | |
82 | free_disarm(ptr); | |
83 | } | |
84 | } | |
85 | define_cleanup_function(struct lxc_cgroup *, free_lxc_cgroup); | |
86 | ||
c6d09e15 | 87 | #if !HAVE_SYS_RESOURCE_H |
3a0e314d | 88 | #define RLIM_INFINITY ((unsigned long)-1) |
c6d09e15 WB |
89 | struct rlimit { |
90 | unsigned long rlim_cur; | |
91 | unsigned long rlim_max; | |
92 | }; | |
93 | #endif | |
3a0e314d | 94 | |
c6d09e15 WB |
95 | /* |
96 | * Defines a structure to configure resource limits to set via setrlimit(). | |
97 | * @resource : the resource name in lowercase without the RLIMIT_ prefix | |
98 | * @limit : the limit to set | |
99 | */ | |
100 | struct lxc_limit { | |
101 | char *resource; | |
102 | struct rlimit limit; | |
103 | }; | |
104 | ||
8fa831e0 CB |
105 | static void free_lxc_limit(struct lxc_limit *ptr) |
106 | { | |
107 | if (ptr) { | |
631d2715 | 108 | free_disarm(ptr->resource); |
8fa831e0 CB |
109 | free_disarm(ptr); |
110 | } | |
111 | } | |
112 | define_cleanup_function(struct lxc_limit *, free_lxc_limit); | |
113 | ||
f6d3e3e4 SH |
114 | enum idtype { |
115 | ID_TYPE_UID, | |
116 | ID_TYPE_GID | |
117 | }; | |
118 | ||
7edd0540 L |
119 | /* |
120 | * Defines a structure to configure kernel parameters at runtime. | |
121 | * @key : the kernel parameters will be configured without the "lxc.sysctl" prefix | |
122 | * @value : the value to set | |
123 | */ | |
124 | struct lxc_sysctl { | |
125 | char *key; | |
126 | char *value; | |
127 | }; | |
128 | ||
f10c80d2 CB |
129 | static void free_lxc_sysctl(struct lxc_sysctl *ptr) |
130 | { | |
131 | if (ptr) { | |
132 | free(ptr->key); | |
133 | free(ptr->value); | |
134 | free_disarm(ptr); | |
135 | } | |
136 | } | |
137 | define_cleanup_function(struct lxc_sysctl *, free_lxc_sysctl); | |
138 | ||
61d7a733 YT |
139 | /* |
140 | * Defines a structure to configure proc filesystem at runtime. | |
141 | * @filename : the proc filesystem will be configured without the "lxc.proc" prefix | |
142 | * @value : the value to set | |
143 | */ | |
144 | struct lxc_proc { | |
145 | char *filename; | |
146 | char *value; | |
147 | }; | |
148 | ||
83332c24 CB |
149 | static void free_lxc_proc(struct lxc_proc *ptr) |
150 | { | |
151 | if (ptr) { | |
152 | free(ptr->filename); | |
153 | free(ptr->value); | |
154 | free_disarm(ptr); | |
155 | } | |
156 | } | |
157 | define_cleanup_function(struct lxc_proc *, free_lxc_proc); | |
158 | ||
f6d3e3e4 SH |
159 | /* |
160 | * id_map is an id map entry. Form in confile is: | |
bdcbb6b3 CB |
161 | * lxc.idmap = u 0 9800 100 |
162 | * lxc.idmap = u 1000 9900 100 | |
163 | * lxc.idmap = g 0 9800 100 | |
164 | * lxc.idmap = g 1000 9900 100 | |
251d0d2a DE |
165 | * meaning the container can use uids and gids 0-99 and 1000-1099, |
166 | * with [ug]id 0 mapping to [ug]id 9800 on the host, and [ug]id 1000 to | |
167 | * [ug]id 9900 on the host. | |
f6d3e3e4 SH |
168 | */ |
169 | struct id_map { | |
170 | enum idtype idtype; | |
251d0d2a | 171 | unsigned long hostid, nsid, range; |
f6d3e3e4 SH |
172 | }; |
173 | ||
0e4be3cf | 174 | /* Defines the number of tty configured and contains the |
a589434e | 175 | * instantiated ptys |
885766f5 | 176 | * @max = number of configured ttys |
b0a33c1e | 177 | */ |
178 | struct lxc_tty_info { | |
885766f5 CB |
179 | size_t max; |
180 | char *dir; | |
181 | char *tty_names; | |
2520facd | 182 | struct lxc_terminal_info *tty; |
b0a33c1e | 183 | }; |
184 | ||
0b932f9d CB |
185 | typedef enum lxc_mount_options_t { |
186 | LXC_MOUNT_CREATE_DIR = 0, | |
187 | LXC_MOUNT_CREATE_FILE = 1, | |
188 | LXC_MOUNT_OPTIONAL = 2, | |
189 | LXC_MOUNT_RELATIVE = 3, | |
f6815906 CB |
190 | LXC_MOUNT_IDMAP = 4, |
191 | LXC_MOUNT_MAX = 5, | |
0b932f9d CB |
192 | } lxc_mount_options_t; |
193 | ||
194 | __hidden extern const char *lxc_mount_options_info[LXC_MOUNT_MAX]; | |
195 | ||
196 | struct lxc_mount_options { | |
197 | int create_dir : 1; | |
198 | int create_file : 1; | |
199 | int optional : 1; | |
200 | int relative : 1; | |
f6815906 | 201 | char userns_path[PATH_MAX]; |
e26cf563 | 202 | int userns_fd; |
0b932f9d CB |
203 | }; |
204 | ||
13bb312d | 205 | /* Defines a structure to store the rootfs location, the |
33fcb7a0 | 206 | * optionals pivot_root, rootfs mount paths |
953db219 CB |
207 | * @path : the rootfs source (directory or device) |
208 | * @mount : where it is mounted | |
952b5031 | 209 | * @buf : static buffer to construct paths |
953db219 CB |
210 | * @bev_type : optional backing store type |
211 | * @options : mount options | |
212 | * @mountflags : the portion of @options that are flags | |
213 | * @data : the portion of @options that are not flags | |
214 | * @managed : whether it is managed by LXC | |
ea57e424 | 215 | * @dfd_mnt : fd for @mount |
a5a08920 | 216 | * @dfd_dev : fd for /dev of the container |
33fcb7a0 DL |
217 | */ |
218 | struct lxc_rootfs { | |
ea11a215 | 219 | int dfd_host; |
79ff643d | 220 | |
33fcb7a0 | 221 | char *path; |
79ff643d CB |
222 | int fd_path_pin; |
223 | ||
224 | int dfd_mnt; | |
23b7ea69 | 225 | char *mount; |
79ff643d CB |
226 | |
227 | int dfd_dev; | |
228 | ||
952b5031 | 229 | char buf[PATH_MAX]; |
b3b8c97f | 230 | char *bdev_type; |
3437f95c CB |
231 | char *options; |
232 | unsigned long mountflags; | |
233 | char *data; | |
6e54330c | 234 | bool managed; |
0b932f9d | 235 | struct lxc_mount_options mnt_opts; |
4e86cad3 | 236 | struct lxc_storage *storage; |
33fcb7a0 DL |
237 | }; |
238 | ||
368bbc02 CS |
239 | /* |
240 | * Automatic mounts for LXC to perform inside the container | |
241 | */ | |
242 | enum { | |
3a0e314d CB |
243 | LXC_AUTO_PROC_RW = 0x001, /* /proc read-write */ |
244 | LXC_AUTO_PROC_MIXED = 0x002, /* /proc/sys and /proc/sysrq-trigger read-only */ | |
b06b8511 CS |
245 | LXC_AUTO_PROC_MASK = 0x003, |
246 | ||
3a0e314d CB |
247 | LXC_AUTO_SYS_RW = 0x004, /* /sys */ |
248 | LXC_AUTO_SYS_RO = 0x008, /* /sys read-only */ | |
249 | LXC_AUTO_SYS_MIXED = 0x00C, /* /sys read-only and /sys/class/net read-write */ | |
b06b8511 CS |
250 | LXC_AUTO_SYS_MASK = 0x00C, |
251 | ||
3a0e314d CB |
252 | LXC_AUTO_CGROUP_RO = 0x010, /* /sys/fs/cgroup (partial mount, read-only) */ |
253 | LXC_AUTO_CGROUP_RW = 0x020, /* /sys/fs/cgroup (partial mount, read-write) */ | |
254 | LXC_AUTO_CGROUP_MIXED = 0x030, /* /sys/fs/cgroup (partial mount, paths r/o, cgroup r/w) */ | |
255 | LXC_AUTO_CGROUP_FULL_RO = 0x040, /* /sys/fs/cgroup (full mount, read-only) */ | |
256 | LXC_AUTO_CGROUP_FULL_RW = 0x050, /* /sys/fs/cgroup (full mount, read-write) */ | |
257 | LXC_AUTO_CGROUP_FULL_MIXED = 0x060, /* /sys/fs/cgroup (full mount, parent r/o, own r/w) */ | |
258 | /* | |
259 | * These are defined in such a way as to retain binary compatibility | |
260 | * with earlier versions of this code. If the previous mask is applied, | |
261 | * both of these will default back to the _MIXED variants, which is | |
262 | * safe. | |
263 | */ | |
264 | LXC_AUTO_CGROUP_NOSPEC = 0x0B0, /* /sys/fs/cgroup (partial mount, r/w or mixed, depending on caps) */ | |
265 | LXC_AUTO_CGROUP_FULL_NOSPEC = 0x0E0, /* /sys/fs/cgroup (full mount, r/w or mixed, depending on caps) */ | |
266 | LXC_AUTO_CGROUP_FORCE = 0x100, /* mount cgroups even when cgroup namespaces are supported */ | |
6cc501f3 | 267 | LXC_AUTO_CGROUP_MASK = 0x1F0, /* all known cgroup options */ |
adf0ba1f LT |
268 | |
269 | LXC_AUTO_SHMOUNTS = 0x200, /* shared mount point */ | |
270 | LXC_AUTO_SHMOUNTS_MASK = 0x200, /* shared mount point mask */ | |
3a0e314d | 271 | LXC_AUTO_ALL_MASK = 0x1FF, /* all known settings */ |
368bbc02 CS |
272 | }; |
273 | ||
26ddeedd | 274 | enum lxchooks { |
1a0e70ac CB |
275 | LXCHOOK_PRESTART, |
276 | LXCHOOK_PREMOUNT, | |
277 | LXCHOOK_MOUNT, | |
278 | LXCHOOK_AUTODEV, | |
279 | LXCHOOK_START, | |
280 | LXCHOOK_STOP, | |
281 | LXCHOOK_POSTSTOP, | |
282 | LXCHOOK_CLONE, | |
283 | LXCHOOK_DESTROY, | |
08dd2805 | 284 | LXCHOOK_START_HOST, |
1a0e70ac CB |
285 | NUM_LXC_HOOKS |
286 | }; | |
72d0e1cb | 287 | |
59eac805 | 288 | __hidden extern char *lxchook_names[NUM_LXC_HOOKS]; |
7b35f3d6 | 289 | |
d39b10eb CB |
290 | struct lxc_state_client { |
291 | int clientfd; | |
292 | lxc_state_t states[MAX_STATE]; | |
293 | }; | |
294 | ||
4b9dc703 | 295 | typedef enum lxc_bpf_devices_rule_t { |
4b9dc703 CB |
296 | LXC_BPF_DEVICE_CGROUP_ALLOWLIST = 0, |
297 | LXC_BPF_DEVICE_CGROUP_DENYLIST = 1, | |
298 | } lxc_bpf_devices_rule_t; | |
fda39d45 | 299 | |
4bfb655e CB |
300 | struct device_item { |
301 | char type; | |
302 | int major; | |
303 | int minor; | |
304 | char access[4]; | |
305 | int allow; | |
a134099d CB |
306 | }; |
307 | ||
308 | struct bpf_devices { | |
309 | lxc_bpf_devices_rule_t list_type; | |
310 | struct lxc_list device_item; | |
4bfb655e CB |
311 | }; |
312 | ||
70fd7fc9 CB |
313 | struct timens_offsets { |
314 | /* Currently, either s_boot or ns_boot is set, but not both. */ | |
315 | int64_t s_boot; | |
316 | int64_t ns_boot; | |
317 | ||
318 | /* Currently, either s_monotonic or ns_monotonic is set, but not both. */ | |
319 | int64_t s_monotonic; | |
320 | int64_t ns_monotonic; | |
321 | }; | |
322 | ||
571e6ec8 | 323 | struct lxc_conf { |
c7b17051 CB |
324 | /* Pointer to the name of the container. Do not free! */ |
325 | const char *name; | |
07c4ea31 | 326 | bool is_execute; |
91480a0f | 327 | int reboot; |
9b8e3c96 | 328 | signed long personality; |
571e6ec8 | 329 | struct utsname *utsname; |
edd64e17 | 330 | |
54860ed0 CB |
331 | struct { |
332 | struct lxc_list cgroup; | |
333 | struct lxc_list cgroup2; | |
a134099d | 334 | struct bpf_devices bpf_devices; |
54860ed0 | 335 | }; |
edd64e17 | 336 | |
46ad64ab CB |
337 | struct { |
338 | struct lxc_list id_map; | |
c7e345ae | 339 | |
edd64e17 CB |
340 | /* |
341 | * Pointer to the idmap entry for the container's root uid in | |
342 | * the id_map list. Do not free! | |
343 | */ | |
5173b710 | 344 | const struct id_map *root_nsuid_map; |
c7e345ae | 345 | |
edd64e17 CB |
346 | /* |
347 | * Pointer to the idmap entry for the container's root gid in | |
348 | * the id_map list. Do not free! | |
349 | */ | |
5173b710 | 350 | const struct id_map *root_nsgid_map; |
46ad64ab | 351 | }; |
edd64e17 | 352 | |
5f4535a3 | 353 | struct lxc_list network; |
448d7b0c CB |
354 | |
355 | struct { | |
356 | char *fstab; | |
357 | int auto_mounts; | |
358 | struct lxc_list mount_list; | |
359 | }; | |
360 | ||
81810dd1 | 361 | struct lxc_list caps; |
1fb86a7c | 362 | struct lxc_list keepcaps; |
885766f5 | 363 | |
a2db71c0 | 364 | /* /dev/tty<idx> devices */ |
885766f5 | 365 | struct lxc_tty_info ttys; |
a2db71c0 CB |
366 | /* /dev/console device */ |
367 | struct lxc_terminal console; | |
368 | /* maximum pty devices allowed by devpts mount */ | |
e528c735 | 369 | size_t pty_max; |
f797f05e CB |
370 | /* file descriptor for the container's /dev/pts mount */ |
371 | int devpts_fd; | |
885766f5 | 372 | |
32fd6cf3 CB |
373 | /* set to true when rootfs has been setup */ |
374 | bool rootfs_setup; | |
33fcb7a0 | 375 | struct lxc_rootfs rootfs; |
32fd6cf3 | 376 | |
b3187a81 | 377 | bool close_all_fds; |
44ae0fb6 CB |
378 | |
379 | struct { | |
380 | unsigned int hooks_version; | |
381 | struct lxc_list hooks[NUM_LXC_HOOKS]; | |
382 | }; | |
4a85ce2a | 383 | |
fe4de9a6 | 384 | char *lsm_aa_profile; |
1800f924 WB |
385 | char *lsm_aa_profile_computed; |
386 | bool lsm_aa_profile_created; | |
387 | unsigned int lsm_aa_allow_nesting; | |
a56e2df9 | 388 | unsigned int lsm_aa_allow_incomplete; |
1800f924 | 389 | struct lxc_list lsm_aa_raw; |
fe4de9a6 | 390 | char *lsm_se_context; |
4fef78bc | 391 | char *lsm_se_keyring_context; |
8f818a84 | 392 | bool keyring_disable_session; |
952b5031 | 393 | bool transient_procfs_mnt; |
c3e3c21a | 394 | struct lxc_seccomp seccomp; |
72d0e1cb | 395 | int maincmd_fd; |
1a0e70ac | 396 | unsigned int autodev; /* if 1, mount and fill a /dev at start */ |
63012bdd | 397 | int autodevtmpfssize; /* size of the /dev tmpfs */ |
1a0e70ac CB |
398 | int haltsignal; /* signal used to halt container */ |
399 | int rebootsignal; /* signal used to reboot container */ | |
400 | int stopsignal; /* signal used to hard stop container */ | |
401 | char *rcfile; /* Copy of the top level rcfile we read */ | |
402 | ||
b9949538 | 403 | /* Logfile and loglevel can be set in a container config file. Those |
7b660465 | 404 | * function as defaults. The defaults can be overridden by command line. |
1a0e70ac CB |
405 | * However we don't want the command line specified values to be saved |
406 | * on c->save_config(). So we store the config file specified values | |
407 | * here. */ | |
98020c31 JS |
408 | char *logfile; /* the logfile as specified in config */ |
409 | int loglevel; /* loglevel as specified in config (if any) */ | |
858377e4 | 410 | int logfd; |
9f30a190 | 411 | |
3590152f CB |
412 | unsigned int start_auto; |
413 | unsigned int start_delay; | |
ee1e7aa0 SG |
414 | int start_order; |
415 | struct lxc_list groups; | |
76a26f55 | 416 | int nbd_idx; |
35120d9c | 417 | |
a8dfe4e0 | 418 | /* unshare the mount namespace in the monitor */ |
226dc30e | 419 | unsigned int monitor_unshare; |
258f8051 | 420 | unsigned int monitor_signal_pdeath; |
a8dfe4e0 | 421 | |
f979ac15 SH |
422 | /* list of included files */ |
423 | struct lxc_list includes; | |
4184c3e1 SH |
424 | /* config entries which are not "lxc.*" are aliens */ |
425 | struct lxc_list aliens; | |
7c661726 MP |
426 | |
427 | /* list of environment variables we'll add to the container when | |
428 | * started */ | |
429 | struct lxc_list environment; | |
6b0d5538 SH |
430 | |
431 | /* text representation of the config file */ | |
432 | char *unexpanded_config; | |
32fd6cf3 CB |
433 | size_t unexpanded_len; |
434 | size_t unexpanded_alloced; | |
67c660d0 | 435 | |
5cda27c1 SH |
436 | /* default command for lxc-execute */ |
437 | char *execute_cmd; | |
438 | ||
67c660d0 SG |
439 | /* init command */ |
440 | char *init_cmd; | |
56f8ff00 | 441 | |
4822319f | 442 | /* The uid to use for the container. */ |
c5cd20ce | 443 | uid_t init_uid; |
4822319f | 444 | /* The gid to use for the container. */ |
c5cd20ce | 445 | gid_t init_gid; |
4822319f CB |
446 | /* The groups to use for the container. */ |
447 | lxc_groups_t init_groups; | |
8796becf CB |
448 | |
449 | /* indicator if the container will be destroyed on shutdown */ | |
66ffdb1a | 450 | unsigned int ephemeral; |
76d0127f CB |
451 | |
452 | /* The facility to pass to syslog. Let's users establish as what type of | |
453 | * program liblxc is supposed to write to the syslog. */ | |
454 | char *syslog; | |
5a46f283 CB |
455 | |
456 | /* Whether PR_SET_NO_NEW_PRIVS will be set for the container. */ | |
457 | bool no_new_privs; | |
c6d09e15 WB |
458 | |
459 | /* RLIMIT_* limits */ | |
460 | struct lxc_list limits; | |
7ec2e32a | 461 | |
43654d34 CB |
462 | /* Contains generic info about the cgroup configuration for this |
463 | * container. Note that struct lxc_cgroup contains a union. It is only | |
464 | * valid to access the members of the anonymous "meta" struct within | |
465 | * that union. | |
466 | */ | |
467 | struct lxc_cgroup cgroup_meta; | |
28d9e29e | 468 | |
b074bbf1 | 469 | struct { |
1d8d3676 | 470 | int ns_clone; |
abeb5bba | 471 | int ns_keep; |
b074bbf1 CB |
472 | char *ns_share[LXC_NS_MAX]; |
473 | }; | |
3c491553 L |
474 | |
475 | /* init working directory */ | |
9e132956 | 476 | char *init_cwd; |
3c491553 | 477 | |
d39b10eb CB |
478 | /* A list of clients registered to be informed about a container state. */ |
479 | struct lxc_list state_clients; | |
7edd0540 L |
480 | |
481 | /* sysctls */ | |
482 | struct lxc_list sysctls; | |
61d7a733 YT |
483 | |
484 | /* procs */ | |
485 | struct lxc_list procs; | |
adf0ba1f | 486 | |
7a41e857 | 487 | struct shmount { |
adf0ba1f LT |
488 | /* Absolute path to the shared mount point on the host */ |
489 | char *path_host; | |
490 | /* Absolute path (in the container) to the shared mount point */ | |
491 | char *path_cont; | |
7a41e857 | 492 | } shmount; |
70fd7fc9 CB |
493 | |
494 | struct timens_offsets timens; | |
571e6ec8 DL |
495 | }; |
496 | ||
efb7e304 CB |
497 | __hidden extern int write_id_mapping(enum idtype idtype, pid_t pid, const char *buf, size_t buf_size) |
498 | __access_r(3, 4); | |
344c9d81 | 499 | |
d7f19646 | 500 | extern thread_local struct lxc_conf *current_config; |
858377e4 | 501 | |
efb7e304 CB |
502 | __hidden extern int run_lxc_hooks(const char *name, char *hook, struct lxc_conf *conf, char *argv[]); |
503 | __hidden extern struct lxc_conf *lxc_conf_init(void); | |
504 | __hidden extern void lxc_conf_free(struct lxc_conf *conf); | |
4e86cad3 CB |
505 | __hidden extern int lxc_storage_prepare(struct lxc_conf *conf); |
506 | __hidden extern int lxc_rootfs_prepare(struct lxc_conf *conf, bool userns); | |
507 | __hidden extern void lxc_storage_put(struct lxc_conf *conf); | |
efb7e304 CB |
508 | __hidden extern int lxc_map_ids(struct lxc_list *idmap, pid_t pid); |
509 | __hidden extern int lxc_create_tty(const char *name, struct lxc_conf *conf); | |
510 | __hidden extern void lxc_delete_tty(struct lxc_tty_info *ttys); | |
511 | __hidden extern int lxc_clear_config_caps(struct lxc_conf *c); | |
512 | __hidden extern int lxc_clear_config_keepcaps(struct lxc_conf *c); | |
513 | __hidden extern int lxc_clear_cgroups(struct lxc_conf *c, const char *key, int version); | |
514 | __hidden extern int lxc_clear_mount_entries(struct lxc_conf *c); | |
515 | __hidden extern int lxc_clear_automounts(struct lxc_conf *c); | |
516 | __hidden extern int lxc_clear_hooks(struct lxc_conf *c, const char *key); | |
517 | __hidden extern int lxc_clear_idmaps(struct lxc_conf *c); | |
518 | __hidden extern int lxc_clear_groups(struct lxc_conf *c); | |
519 | __hidden extern int lxc_clear_environment(struct lxc_conf *c); | |
520 | __hidden extern int lxc_clear_limits(struct lxc_conf *c, const char *key); | |
521 | __hidden extern int lxc_delete_autodev(struct lxc_handler *handler); | |
522 | __hidden extern int lxc_clear_autodev_tmpfs_size(struct lxc_conf *c); | |
523 | __hidden extern void lxc_clear_includes(struct lxc_conf *conf); | |
524 | __hidden extern int lxc_setup_rootfs_prepare_root(struct lxc_conf *conf, const char *name, | |
525 | const char *lxcpath); | |
526 | __hidden extern int lxc_setup(struct lxc_handler *handler); | |
527 | __hidden extern int lxc_setup_parent(struct lxc_handler *handler); | |
528 | __hidden extern int setup_resource_limits(struct lxc_list *limits, pid_t pid); | |
529 | __hidden extern int find_unmapped_nsid(const struct lxc_conf *conf, enum idtype idtype); | |
530 | __hidden extern int mapped_hostid(unsigned id, const struct lxc_conf *conf, enum idtype idtype); | |
531 | __hidden extern int userns_exec_1(const struct lxc_conf *conf, int (*fn)(void *), void *data, | |
532 | const char *fn_name); | |
533 | __hidden extern int userns_exec_full(struct lxc_conf *conf, int (*fn)(void *), void *data, | |
534 | const char *fn_name); | |
535 | __hidden extern int parse_mntopts(const char *mntopts, unsigned long *mntflags, char **mntdata); | |
536 | __hidden extern int parse_propagationopts(const char *mntopts, unsigned long *pflags); | |
16fcdacc | 537 | __hidden extern int parse_lxc_mntopts(struct lxc_mount_options *opts, char *mnt_opts); |
efb7e304 | 538 | __hidden extern void tmp_proc_unmount(struct lxc_conf *lxc_conf); |
efb7e304 CB |
539 | __hidden extern void suggest_default_idmap(void); |
540 | __hidden extern FILE *make_anonymous_mount_file(struct lxc_list *mount, bool include_nesting_helpers); | |
541 | __hidden extern struct lxc_list *sort_cgroup_settings(struct lxc_list *cgroup_settings); | |
efb7e304 CB |
542 | __hidden extern int run_script(const char *name, const char *section, const char *script, ...); |
543 | __hidden extern int run_script_argv(const char *name, unsigned int hook_version, const char *section, | |
544 | const char *script, const char *hookname, char **argsin); | |
545 | __hidden extern int in_caplist(int cap, struct lxc_list *caps); | |
309ae287 | 546 | |
d84b26bc | 547 | static inline bool lxc_wants_cap(int cap, struct lxc_conf *conf) |
309ae287 | 548 | { |
d84b26bc CB |
549 | if (lxc_caps_last_cap() < cap) |
550 | return false; | |
551 | ||
309ae287 | 552 | if (!lxc_list_empty(&conf->keepcaps)) |
5d1bf4c4 | 553 | return in_caplist(cap, &conf->keepcaps); |
309ae287 | 554 | |
5d1bf4c4 | 555 | return !in_caplist(cap, &conf->caps); |
309ae287 CB |
556 | } |
557 | ||
efb7e304 CB |
558 | __hidden extern int setup_sysctl_parameters(struct lxc_list *sysctls); |
559 | __hidden extern int lxc_clear_sysctls(struct lxc_conf *c, const char *key); | |
560 | __hidden extern int setup_proc_filesystem(struct lxc_list *procs, pid_t pid); | |
561 | __hidden extern int lxc_clear_procs(struct lxc_conf *c, const char *key); | |
562 | __hidden extern int lxc_clear_apparmor_raw(struct lxc_conf *c); | |
563 | __hidden extern int lxc_clear_namespace(struct lxc_conf *c); | |
564 | __hidden extern int userns_exec_minimal(const struct lxc_conf *conf, int (*fn_parent)(void *), | |
565 | void *fn_parent_data, int (*fn_child)(void *), | |
566 | void *fn_child_data); | |
567 | __hidden extern int userns_exec_mapped_root(const char *path, int path_fd, | |
568 | const struct lxc_conf *conf); | |
6e1a327a CB |
569 | static inline int chown_mapped_root(const char *path, const struct lxc_conf *conf) |
570 | { | |
571 | return userns_exec_mapped_root(path, -EBADF, conf); | |
572 | } | |
5ae72b98 | 573 | |
68f3899e CB |
574 | __hidden int lxc_setup_devpts_parent(struct lxc_handler *handler); |
575 | ||
02efd041 CB |
576 | static inline const char *get_rootfs_mnt(const struct lxc_rootfs *rootfs) |
577 | { | |
578 | static const char *s = "/"; | |
579 | ||
580 | return !is_empty_string(rootfs->path) ? rootfs->mount : s; | |
581 | } | |
582 | ||
e26cf563 CB |
583 | static inline bool idmapped_rootfs_mnt(const struct lxc_rootfs *rootfs) |
584 | { | |
585 | return rootfs->mnt_opts.userns_fd >= 0; | |
586 | } | |
587 | ||
79ff643d CB |
588 | static inline void put_lxc_rootfs(struct lxc_rootfs *rootfs, bool unpin) |
589 | { | |
590 | if (rootfs) { | |
591 | close_prot_errno_disarm(rootfs->dfd_host); | |
592 | close_prot_errno_disarm(rootfs->dfd_mnt); | |
593 | close_prot_errno_disarm(rootfs->dfd_dev); | |
e26cf563 | 594 | close_prot_errno_disarm(rootfs->mnt_opts.userns_fd); |
79ff643d CB |
595 | if (unpin) |
596 | close_prot_errno_disarm(rootfs->fd_path_pin); | |
4e86cad3 CB |
597 | storage_put(rootfs->storage); |
598 | rootfs->storage = NULL; | |
79ff643d CB |
599 | } |
600 | } | |
601 | ||
a7744f12 CB |
602 | static inline void lxc_clear_cgroup2_devices(struct bpf_devices *bpf_devices) |
603 | { | |
604 | struct lxc_list *list = &bpf_devices->device_item; | |
605 | struct lxc_list *it, *next; | |
606 | ||
607 | lxc_list_for_each_safe (it, list, next) { | |
608 | lxc_list_del(it); | |
609 | free(it); | |
610 | } | |
611 | ||
612 | lxc_list_init(&bpf_devices->device_item); | |
613 | } | |
614 | ||
1a0e70ac | 615 | #endif /* __LXC_CONF_H */ |