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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" |
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; | |
4b875ef9 | 201 | int userns_self : 1; |
f6815906 | 202 | char userns_path[PATH_MAX]; |
e26cf563 | 203 | int userns_fd; |
423374e9 CB |
204 | unsigned long mnt_flags; |
205 | unsigned long prop_flags; | |
206 | char *data; | |
0b932f9d CB |
207 | }; |
208 | ||
13bb312d | 209 | /* Defines a structure to store the rootfs location, the |
33fcb7a0 | 210 | * optionals pivot_root, rootfs mount paths |
953db219 CB |
211 | * @path : the rootfs source (directory or device) |
212 | * @mount : where it is mounted | |
952b5031 | 213 | * @buf : static buffer to construct paths |
953db219 CB |
214 | * @bev_type : optional backing store type |
215 | * @options : mount options | |
953db219 | 216 | * @managed : whether it is managed by LXC |
ea57e424 | 217 | * @dfd_mnt : fd for @mount |
a5a08920 | 218 | * @dfd_dev : fd for /dev of the container |
33fcb7a0 DL |
219 | */ |
220 | struct lxc_rootfs { | |
ea11a215 | 221 | int dfd_host; |
79ff643d | 222 | |
33fcb7a0 | 223 | char *path; |
79ff643d | 224 | int fd_path_pin; |
4b875ef9 | 225 | int dfd_idmapped; |
79ff643d CB |
226 | |
227 | int dfd_mnt; | |
23b7ea69 | 228 | char *mount; |
79ff643d CB |
229 | |
230 | int dfd_dev; | |
231 | ||
952b5031 | 232 | char buf[PATH_MAX]; |
b3b8c97f | 233 | char *bdev_type; |
3437f95c CB |
234 | char *options; |
235 | unsigned long mountflags; | |
6e54330c | 236 | bool managed; |
0b932f9d | 237 | struct lxc_mount_options mnt_opts; |
4e86cad3 | 238 | struct lxc_storage *storage; |
33fcb7a0 DL |
239 | }; |
240 | ||
368bbc02 CS |
241 | /* |
242 | * Automatic mounts for LXC to perform inside the container | |
243 | */ | |
244 | enum { | |
3a0e314d CB |
245 | LXC_AUTO_PROC_RW = 0x001, /* /proc read-write */ |
246 | LXC_AUTO_PROC_MIXED = 0x002, /* /proc/sys and /proc/sysrq-trigger read-only */ | |
b06b8511 CS |
247 | LXC_AUTO_PROC_MASK = 0x003, |
248 | ||
3a0e314d CB |
249 | LXC_AUTO_SYS_RW = 0x004, /* /sys */ |
250 | LXC_AUTO_SYS_RO = 0x008, /* /sys read-only */ | |
251 | LXC_AUTO_SYS_MIXED = 0x00C, /* /sys read-only and /sys/class/net read-write */ | |
b06b8511 CS |
252 | LXC_AUTO_SYS_MASK = 0x00C, |
253 | ||
3a0e314d CB |
254 | LXC_AUTO_CGROUP_RO = 0x010, /* /sys/fs/cgroup (partial mount, read-only) */ |
255 | LXC_AUTO_CGROUP_RW = 0x020, /* /sys/fs/cgroup (partial mount, read-write) */ | |
256 | LXC_AUTO_CGROUP_MIXED = 0x030, /* /sys/fs/cgroup (partial mount, paths r/o, cgroup r/w) */ | |
257 | LXC_AUTO_CGROUP_FULL_RO = 0x040, /* /sys/fs/cgroup (full mount, read-only) */ | |
258 | LXC_AUTO_CGROUP_FULL_RW = 0x050, /* /sys/fs/cgroup (full mount, read-write) */ | |
259 | LXC_AUTO_CGROUP_FULL_MIXED = 0x060, /* /sys/fs/cgroup (full mount, parent r/o, own r/w) */ | |
260 | /* | |
261 | * These are defined in such a way as to retain binary compatibility | |
262 | * with earlier versions of this code. If the previous mask is applied, | |
263 | * both of these will default back to the _MIXED variants, which is | |
264 | * safe. | |
265 | */ | |
266 | LXC_AUTO_CGROUP_NOSPEC = 0x0B0, /* /sys/fs/cgroup (partial mount, r/w or mixed, depending on caps) */ | |
267 | LXC_AUTO_CGROUP_FULL_NOSPEC = 0x0E0, /* /sys/fs/cgroup (full mount, r/w or mixed, depending on caps) */ | |
268 | LXC_AUTO_CGROUP_FORCE = 0x100, /* mount cgroups even when cgroup namespaces are supported */ | |
6cc501f3 | 269 | LXC_AUTO_CGROUP_MASK = 0x1F0, /* all known cgroup options */ |
adf0ba1f LT |
270 | |
271 | LXC_AUTO_SHMOUNTS = 0x200, /* shared mount point */ | |
272 | LXC_AUTO_SHMOUNTS_MASK = 0x200, /* shared mount point mask */ | |
3a0e314d | 273 | LXC_AUTO_ALL_MASK = 0x1FF, /* all known settings */ |
368bbc02 CS |
274 | }; |
275 | ||
26ddeedd | 276 | enum lxchooks { |
1a0e70ac CB |
277 | LXCHOOK_PRESTART, |
278 | LXCHOOK_PREMOUNT, | |
279 | LXCHOOK_MOUNT, | |
280 | LXCHOOK_AUTODEV, | |
281 | LXCHOOK_START, | |
282 | LXCHOOK_STOP, | |
283 | LXCHOOK_POSTSTOP, | |
284 | LXCHOOK_CLONE, | |
285 | LXCHOOK_DESTROY, | |
08dd2805 | 286 | LXCHOOK_START_HOST, |
1a0e70ac CB |
287 | NUM_LXC_HOOKS |
288 | }; | |
72d0e1cb | 289 | |
59eac805 | 290 | __hidden extern char *lxchook_names[NUM_LXC_HOOKS]; |
7b35f3d6 | 291 | |
d39b10eb CB |
292 | struct lxc_state_client { |
293 | int clientfd; | |
294 | lxc_state_t states[MAX_STATE]; | |
295 | }; | |
296 | ||
4b9dc703 | 297 | typedef enum lxc_bpf_devices_rule_t { |
4b9dc703 CB |
298 | LXC_BPF_DEVICE_CGROUP_ALLOWLIST = 0, |
299 | LXC_BPF_DEVICE_CGROUP_DENYLIST = 1, | |
300 | } lxc_bpf_devices_rule_t; | |
fda39d45 | 301 | |
4bfb655e CB |
302 | struct device_item { |
303 | char type; | |
304 | int major; | |
305 | int minor; | |
306 | char access[4]; | |
307 | int allow; | |
a134099d CB |
308 | }; |
309 | ||
310 | struct bpf_devices { | |
311 | lxc_bpf_devices_rule_t list_type; | |
312 | struct lxc_list device_item; | |
4bfb655e CB |
313 | }; |
314 | ||
70fd7fc9 CB |
315 | struct timens_offsets { |
316 | /* Currently, either s_boot or ns_boot is set, but not both. */ | |
317 | int64_t s_boot; | |
318 | int64_t ns_boot; | |
319 | ||
320 | /* Currently, either s_monotonic or ns_monotonic is set, but not both. */ | |
321 | int64_t s_monotonic; | |
322 | int64_t ns_monotonic; | |
323 | }; | |
324 | ||
571e6ec8 | 325 | struct lxc_conf { |
c7b17051 CB |
326 | /* Pointer to the name of the container. Do not free! */ |
327 | const char *name; | |
07c4ea31 | 328 | bool is_execute; |
91480a0f | 329 | int reboot; |
9b8e3c96 | 330 | signed long personality; |
571e6ec8 | 331 | struct utsname *utsname; |
edd64e17 | 332 | |
54860ed0 CB |
333 | struct { |
334 | struct lxc_list cgroup; | |
335 | struct lxc_list cgroup2; | |
a134099d | 336 | struct bpf_devices bpf_devices; |
54860ed0 | 337 | }; |
edd64e17 | 338 | |
46ad64ab CB |
339 | struct { |
340 | struct lxc_list id_map; | |
c7e345ae | 341 | |
edd64e17 CB |
342 | /* |
343 | * Pointer to the idmap entry for the container's root uid in | |
344 | * the id_map list. Do not free! | |
345 | */ | |
5173b710 | 346 | const struct id_map *root_nsuid_map; |
c7e345ae | 347 | |
edd64e17 CB |
348 | /* |
349 | * Pointer to the idmap entry for the container's root gid in | |
350 | * the id_map list. Do not free! | |
351 | */ | |
5173b710 | 352 | const struct id_map *root_nsgid_map; |
46ad64ab | 353 | }; |
edd64e17 | 354 | |
5f4535a3 | 355 | struct lxc_list network; |
448d7b0c CB |
356 | |
357 | struct { | |
358 | char *fstab; | |
359 | int auto_mounts; | |
360 | struct lxc_list mount_list; | |
361 | }; | |
362 | ||
81810dd1 | 363 | struct lxc_list caps; |
1fb86a7c | 364 | struct lxc_list keepcaps; |
885766f5 | 365 | |
a2db71c0 | 366 | /* /dev/tty<idx> devices */ |
885766f5 | 367 | struct lxc_tty_info ttys; |
a2db71c0 CB |
368 | /* /dev/console device */ |
369 | struct lxc_terminal console; | |
370 | /* maximum pty devices allowed by devpts mount */ | |
e528c735 | 371 | size_t pty_max; |
f797f05e CB |
372 | /* file descriptor for the container's /dev/pts mount */ |
373 | int devpts_fd; | |
885766f5 | 374 | |
32fd6cf3 CB |
375 | /* set to true when rootfs has been setup */ |
376 | bool rootfs_setup; | |
33fcb7a0 | 377 | struct lxc_rootfs rootfs; |
32fd6cf3 | 378 | |
b3187a81 | 379 | bool close_all_fds; |
44ae0fb6 CB |
380 | |
381 | struct { | |
382 | unsigned int hooks_version; | |
383 | struct lxc_list hooks[NUM_LXC_HOOKS]; | |
384 | }; | |
4a85ce2a | 385 | |
fe4de9a6 | 386 | char *lsm_aa_profile; |
1800f924 WB |
387 | char *lsm_aa_profile_computed; |
388 | bool lsm_aa_profile_created; | |
389 | unsigned int lsm_aa_allow_nesting; | |
a56e2df9 | 390 | unsigned int lsm_aa_allow_incomplete; |
1800f924 | 391 | struct lxc_list lsm_aa_raw; |
fe4de9a6 | 392 | char *lsm_se_context; |
4fef78bc | 393 | char *lsm_se_keyring_context; |
8f818a84 | 394 | bool keyring_disable_session; |
952b5031 | 395 | bool transient_procfs_mnt; |
c3e3c21a | 396 | struct lxc_seccomp seccomp; |
72d0e1cb | 397 | int maincmd_fd; |
1a0e70ac | 398 | unsigned int autodev; /* if 1, mount and fill a /dev at start */ |
63012bdd | 399 | int autodevtmpfssize; /* size of the /dev tmpfs */ |
1a0e70ac CB |
400 | int haltsignal; /* signal used to halt container */ |
401 | int rebootsignal; /* signal used to reboot container */ | |
402 | int stopsignal; /* signal used to hard stop container */ | |
403 | char *rcfile; /* Copy of the top level rcfile we read */ | |
404 | ||
b9949538 | 405 | /* Logfile and loglevel can be set in a container config file. Those |
7b660465 | 406 | * function as defaults. The defaults can be overridden by command line. |
1a0e70ac CB |
407 | * However we don't want the command line specified values to be saved |
408 | * on c->save_config(). So we store the config file specified values | |
409 | * here. */ | |
98020c31 JS |
410 | char *logfile; /* the logfile as specified in config */ |
411 | int loglevel; /* loglevel as specified in config (if any) */ | |
858377e4 | 412 | int logfd; |
9f30a190 | 413 | |
3590152f CB |
414 | unsigned int start_auto; |
415 | unsigned int start_delay; | |
ee1e7aa0 SG |
416 | int start_order; |
417 | struct lxc_list groups; | |
76a26f55 | 418 | int nbd_idx; |
35120d9c | 419 | |
a8dfe4e0 | 420 | /* unshare the mount namespace in the monitor */ |
226dc30e | 421 | unsigned int monitor_unshare; |
258f8051 | 422 | unsigned int monitor_signal_pdeath; |
a8dfe4e0 | 423 | |
f979ac15 SH |
424 | /* list of included files */ |
425 | struct lxc_list includes; | |
4184c3e1 SH |
426 | /* config entries which are not "lxc.*" are aliens */ |
427 | struct lxc_list aliens; | |
7c661726 MP |
428 | |
429 | /* list of environment variables we'll add to the container when | |
430 | * started */ | |
431 | struct lxc_list environment; | |
6b0d5538 SH |
432 | |
433 | /* text representation of the config file */ | |
434 | char *unexpanded_config; | |
32fd6cf3 CB |
435 | size_t unexpanded_len; |
436 | size_t unexpanded_alloced; | |
67c660d0 | 437 | |
5cda27c1 SH |
438 | /* default command for lxc-execute */ |
439 | char *execute_cmd; | |
440 | ||
67c660d0 SG |
441 | /* init command */ |
442 | char *init_cmd; | |
56f8ff00 | 443 | |
4822319f | 444 | /* The uid to use for the container. */ |
c5cd20ce | 445 | uid_t init_uid; |
4822319f | 446 | /* The gid to use for the container. */ |
c5cd20ce | 447 | gid_t init_gid; |
4822319f CB |
448 | /* The groups to use for the container. */ |
449 | lxc_groups_t init_groups; | |
8796becf CB |
450 | |
451 | /* indicator if the container will be destroyed on shutdown */ | |
66ffdb1a | 452 | unsigned int ephemeral; |
76d0127f CB |
453 | |
454 | /* The facility to pass to syslog. Let's users establish as what type of | |
455 | * program liblxc is supposed to write to the syslog. */ | |
456 | char *syslog; | |
5a46f283 CB |
457 | |
458 | /* Whether PR_SET_NO_NEW_PRIVS will be set for the container. */ | |
459 | bool no_new_privs; | |
c6d09e15 WB |
460 | |
461 | /* RLIMIT_* limits */ | |
462 | struct lxc_list limits; | |
7ec2e32a | 463 | |
43654d34 CB |
464 | /* Contains generic info about the cgroup configuration for this |
465 | * container. Note that struct lxc_cgroup contains a union. It is only | |
466 | * valid to access the members of the anonymous "meta" struct within | |
467 | * that union. | |
468 | */ | |
469 | struct lxc_cgroup cgroup_meta; | |
28d9e29e | 470 | |
b074bbf1 | 471 | struct { |
1d8d3676 | 472 | int ns_clone; |
abeb5bba | 473 | int ns_keep; |
b074bbf1 CB |
474 | char *ns_share[LXC_NS_MAX]; |
475 | }; | |
3c491553 L |
476 | |
477 | /* init working directory */ | |
9e132956 | 478 | char *init_cwd; |
3c491553 | 479 | |
d39b10eb CB |
480 | /* A list of clients registered to be informed about a container state. */ |
481 | struct lxc_list state_clients; | |
7edd0540 L |
482 | |
483 | /* sysctls */ | |
484 | struct lxc_list sysctls; | |
61d7a733 YT |
485 | |
486 | /* procs */ | |
487 | struct lxc_list procs; | |
adf0ba1f | 488 | |
7a41e857 | 489 | struct shmount { |
adf0ba1f LT |
490 | /* Absolute path to the shared mount point on the host */ |
491 | char *path_host; | |
492 | /* Absolute path (in the container) to the shared mount point */ | |
493 | char *path_cont; | |
7a41e857 | 494 | } shmount; |
70fd7fc9 CB |
495 | |
496 | struct timens_offsets timens; | |
571e6ec8 DL |
497 | }; |
498 | ||
efb7e304 CB |
499 | __hidden extern int write_id_mapping(enum idtype idtype, pid_t pid, const char *buf, size_t buf_size) |
500 | __access_r(3, 4); | |
344c9d81 | 501 | |
d7f19646 | 502 | extern thread_local struct lxc_conf *current_config; |
858377e4 | 503 | |
efb7e304 CB |
504 | __hidden extern int run_lxc_hooks(const char *name, char *hook, struct lxc_conf *conf, char *argv[]); |
505 | __hidden extern struct lxc_conf *lxc_conf_init(void); | |
506 | __hidden extern void lxc_conf_free(struct lxc_conf *conf); | |
4e86cad3 CB |
507 | __hidden extern int lxc_storage_prepare(struct lxc_conf *conf); |
508 | __hidden extern int lxc_rootfs_prepare(struct lxc_conf *conf, bool userns); | |
509 | __hidden extern void lxc_storage_put(struct lxc_conf *conf); | |
239f29c9 | 510 | __hidden extern int lxc_rootfs_init(struct lxc_conf *conf, bool userns); |
4b875ef9 | 511 | __hidden extern int lxc_rootfs_prepare_parent(struct lxc_handler *handler); |
efb7e304 CB |
512 | __hidden extern int lxc_map_ids(struct lxc_list *idmap, pid_t pid); |
513 | __hidden extern int lxc_create_tty(const char *name, struct lxc_conf *conf); | |
514 | __hidden extern void lxc_delete_tty(struct lxc_tty_info *ttys); | |
515 | __hidden extern int lxc_clear_config_caps(struct lxc_conf *c); | |
516 | __hidden extern int lxc_clear_config_keepcaps(struct lxc_conf *c); | |
517 | __hidden extern int lxc_clear_cgroups(struct lxc_conf *c, const char *key, int version); | |
518 | __hidden extern int lxc_clear_mount_entries(struct lxc_conf *c); | |
519 | __hidden extern int lxc_clear_automounts(struct lxc_conf *c); | |
520 | __hidden extern int lxc_clear_hooks(struct lxc_conf *c, const char *key); | |
521 | __hidden extern int lxc_clear_idmaps(struct lxc_conf *c); | |
522 | __hidden extern int lxc_clear_groups(struct lxc_conf *c); | |
523 | __hidden extern int lxc_clear_environment(struct lxc_conf *c); | |
524 | __hidden extern int lxc_clear_limits(struct lxc_conf *c, const char *key); | |
525 | __hidden extern int lxc_delete_autodev(struct lxc_handler *handler); | |
526 | __hidden extern int lxc_clear_autodev_tmpfs_size(struct lxc_conf *c); | |
527 | __hidden extern void lxc_clear_includes(struct lxc_conf *conf); | |
528 | __hidden extern int lxc_setup_rootfs_prepare_root(struct lxc_conf *conf, const char *name, | |
529 | const char *lxcpath); | |
530 | __hidden extern int lxc_setup(struct lxc_handler *handler); | |
531 | __hidden extern int lxc_setup_parent(struct lxc_handler *handler); | |
532 | __hidden extern int setup_resource_limits(struct lxc_list *limits, pid_t pid); | |
533 | __hidden extern int find_unmapped_nsid(const struct lxc_conf *conf, enum idtype idtype); | |
534 | __hidden extern int mapped_hostid(unsigned id, const struct lxc_conf *conf, enum idtype idtype); | |
535 | __hidden extern int userns_exec_1(const struct lxc_conf *conf, int (*fn)(void *), void *data, | |
536 | const char *fn_name); | |
537 | __hidden extern int userns_exec_full(struct lxc_conf *conf, int (*fn)(void *), void *data, | |
538 | const char *fn_name); | |
539 | __hidden extern int parse_mntopts(const char *mntopts, unsigned long *mntflags, char **mntdata); | |
540 | __hidden extern int parse_propagationopts(const char *mntopts, unsigned long *pflags); | |
16fcdacc | 541 | __hidden extern int parse_lxc_mntopts(struct lxc_mount_options *opts, char *mnt_opts); |
efb7e304 | 542 | __hidden extern void tmp_proc_unmount(struct lxc_conf *lxc_conf); |
efb7e304 CB |
543 | __hidden extern void suggest_default_idmap(void); |
544 | __hidden extern FILE *make_anonymous_mount_file(struct lxc_list *mount, bool include_nesting_helpers); | |
545 | __hidden extern struct lxc_list *sort_cgroup_settings(struct lxc_list *cgroup_settings); | |
efb7e304 CB |
546 | __hidden extern int run_script(const char *name, const char *section, const char *script, ...); |
547 | __hidden extern int run_script_argv(const char *name, unsigned int hook_version, const char *section, | |
548 | const char *script, const char *hookname, char **argsin); | |
549 | __hidden extern int in_caplist(int cap, struct lxc_list *caps); | |
309ae287 | 550 | |
d84b26bc | 551 | static inline bool lxc_wants_cap(int cap, struct lxc_conf *conf) |
309ae287 | 552 | { |
d84b26bc CB |
553 | if (lxc_caps_last_cap() < cap) |
554 | return false; | |
555 | ||
309ae287 | 556 | if (!lxc_list_empty(&conf->keepcaps)) |
5d1bf4c4 | 557 | return in_caplist(cap, &conf->keepcaps); |
309ae287 | 558 | |
5d1bf4c4 | 559 | return !in_caplist(cap, &conf->caps); |
309ae287 CB |
560 | } |
561 | ||
efb7e304 CB |
562 | __hidden extern int setup_sysctl_parameters(struct lxc_list *sysctls); |
563 | __hidden extern int lxc_clear_sysctls(struct lxc_conf *c, const char *key); | |
564 | __hidden extern int setup_proc_filesystem(struct lxc_list *procs, pid_t pid); | |
565 | __hidden extern int lxc_clear_procs(struct lxc_conf *c, const char *key); | |
566 | __hidden extern int lxc_clear_apparmor_raw(struct lxc_conf *c); | |
567 | __hidden extern int lxc_clear_namespace(struct lxc_conf *c); | |
568 | __hidden extern int userns_exec_minimal(const struct lxc_conf *conf, int (*fn_parent)(void *), | |
569 | void *fn_parent_data, int (*fn_child)(void *), | |
570 | void *fn_child_data); | |
571 | __hidden extern int userns_exec_mapped_root(const char *path, int path_fd, | |
572 | const struct lxc_conf *conf); | |
6e1a327a CB |
573 | static inline int chown_mapped_root(const char *path, const struct lxc_conf *conf) |
574 | { | |
575 | return userns_exec_mapped_root(path, -EBADF, conf); | |
576 | } | |
5ae72b98 | 577 | |
68f3899e CB |
578 | __hidden int lxc_setup_devpts_parent(struct lxc_handler *handler); |
579 | ||
02efd041 CB |
580 | static inline const char *get_rootfs_mnt(const struct lxc_rootfs *rootfs) |
581 | { | |
582 | static const char *s = "/"; | |
583 | ||
584 | return !is_empty_string(rootfs->path) ? rootfs->mount : s; | |
585 | } | |
586 | ||
423374e9 CB |
587 | static inline void put_lxc_mount_options(struct lxc_mount_options *mnt_opts) |
588 | { | |
589 | mnt_opts->create_dir = 0; | |
590 | mnt_opts->create_file = 0; | |
591 | mnt_opts->optional = 0; | |
592 | mnt_opts->relative = 0; | |
4b875ef9 | 593 | mnt_opts->userns_self = 0; |
423374e9 CB |
594 | mnt_opts->userns_path[0] = '\0'; |
595 | mnt_opts->mnt_flags = 0; | |
596 | mnt_opts->prop_flags = 0; | |
597 | ||
598 | close_prot_errno_disarm(mnt_opts->userns_fd); | |
599 | free_disarm(mnt_opts->data); | |
600 | } | |
601 | ||
79ff643d CB |
602 | static inline void put_lxc_rootfs(struct lxc_rootfs *rootfs, bool unpin) |
603 | { | |
604 | if (rootfs) { | |
605 | close_prot_errno_disarm(rootfs->dfd_host); | |
606 | close_prot_errno_disarm(rootfs->dfd_mnt); | |
607 | close_prot_errno_disarm(rootfs->dfd_dev); | |
e26cf563 | 608 | close_prot_errno_disarm(rootfs->mnt_opts.userns_fd); |
79ff643d CB |
609 | if (unpin) |
610 | close_prot_errno_disarm(rootfs->fd_path_pin); | |
4b875ef9 | 611 | close_prot_errno_disarm(rootfs->dfd_idmapped); |
423374e9 | 612 | put_lxc_mount_options(&rootfs->mnt_opts); |
4e86cad3 CB |
613 | storage_put(rootfs->storage); |
614 | rootfs->storage = NULL; | |
79ff643d CB |
615 | } |
616 | } | |
617 | ||
a7744f12 CB |
618 | static inline void lxc_clear_cgroup2_devices(struct bpf_devices *bpf_devices) |
619 | { | |
620 | struct lxc_list *list = &bpf_devices->device_item; | |
621 | struct lxc_list *it, *next; | |
622 | ||
623 | lxc_list_for_each_safe (it, list, next) { | |
624 | lxc_list_del(it); | |
625 | free(it); | |
626 | } | |
627 | ||
628 | lxc_list_init(&bpf_devices->device_item); | |
629 | } | |
630 | ||
1a0e70ac | 631 | #endif /* __LXC_CONF_H */ |