[mirror_lxc.git] / src / lxc / conf.h

/*
 * lxc: linux Container library
 *
 * (C) Copyright IBM Corp. 2007, 2008
 *
 * Authors:
 * Daniel Lezcano <daniel.lezcano at free.fr>
 *
 * This library 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.
 *
 * This library 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 this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
#ifndef __LXC_CONF_H
#define __LXC_CONF_H

#include "config.h"

#include <stdio.h>
#include <net/if.h>
#include <netinet/in.h>
#include <sys/param.h>
#include <sys/types.h>
#if HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
#include <stdbool.h>

#include "list.h"
#include "ringbuf.h"
#include "start.h" /* for lxc_handler */
#include "terminal.h"

#if HAVE_SCMP_FILTER_CTX
typedef void * scmp_filter_ctx;
#endif

/* worth moving to configure.ac? */
#define subuidfile "/etc/subuid"
#define subgidfile "/etc/subgid"

/*
 * Defines a generic struct to configure the control group. It is up to the
 * programmer to specify the right subsystem.
 * @subsystem : the targeted subsystem
 * @value     : the value to set
 * @version   : The version of the cgroup filesystem on which the controller
 *              resides.
 *
 * @controllers : The controllers to use for this container.
 * @dir         : The name of the directory containing the container's cgroup.
 *                Not that this is a per-container setting.
 */
struct lxc_cgroup {
	union {
		/* information about a specific controller */
		struct /* controller */ {
			int version;
			char *subsystem;
			char *value;
		};

		/* meta information about cgroup configuration */
		struct /* meta */ {
			char *controllers;
			char *dir;
		};
	};
};

#if !HAVE_SYS_RESOURCE_H
#define RLIM_INFINITY ((unsigned long)-1)
struct rlimit {
	unsigned long rlim_cur;
	unsigned long rlim_max;
};
#endif

/*
 * Defines a structure to configure resource limits to set via setrlimit().
 * @resource : the resource name in lowercase without the RLIMIT_ prefix
 * @limit    : the limit to set
 */
struct lxc_limit {
	char *resource;
	struct rlimit limit;
};

enum idtype {
	ID_TYPE_UID,
	ID_TYPE_GID
};

/*
 * Defines a structure to configure kernel parameters at runtime.
 * @key      : the kernel parameters will be configured without the "lxc.sysctl" prefix
 * @value    : the value to set
 */
struct lxc_sysctl {
	char *key;
	char *value;
};

/*
 * Defines a structure to configure proc filesystem at runtime.
 * @filename : the proc filesystem will be configured without the "lxc.proc" prefix
 * @value    : the value to set
 */
struct lxc_proc {
	char *filename;
	char *value;
};

/*
 * id_map is an id map entry.  Form in confile is:
 * lxc.idmap = u 0    9800 100
 * lxc.idmap = u 1000 9900 100
 * lxc.idmap = g 0    9800 100
 * lxc.idmap = g 1000 9900 100
 * meaning the container can use uids and gids 0-99 and 1000-1099,
 * with [ug]id 0 mapping to [ug]id 9800 on the host, and [ug]id 1000 to
 * [ug]id 9900 on the host.
 */
struct id_map {
	enum idtype idtype;
	unsigned long hostid, nsid, range;
};

/* Defines the number of tty configured and contains the
 * instantiated ptys
 * @max = number of configured ttys
 */
struct lxc_tty_info {
	size_t max;
	char *dir;
	char *tty_names;
	struct lxc_terminal_info *tty;
};

/* Defines a structure to store the rootfs location, the
 * optionals pivot_root, rootfs mount paths
 * @path       : the rootfs source (directory or device)
 * @mount      : where it is mounted
 * @options    : mount options
 * @bev_type   : optional backing store type
 */
struct lxc_rootfs {
	char *path;
	char *mount;
	char *options;
	char *bdev_type;
};

/*
 * Automatic mounts for LXC to perform inside the container
 */
enum {
	LXC_AUTO_PROC_RW              = 0x001, /* /proc read-write */
	LXC_AUTO_PROC_MIXED           = 0x002, /* /proc/sys and /proc/sysrq-trigger read-only */
	LXC_AUTO_PROC_MASK            = 0x003,

	LXC_AUTO_SYS_RW               = 0x004, /* /sys */
	LXC_AUTO_SYS_RO               = 0x008, /* /sys read-only */
	LXC_AUTO_SYS_MIXED            = 0x00C, /* /sys read-only and /sys/class/net read-write */
	LXC_AUTO_SYS_MASK             = 0x00C,

	LXC_AUTO_CGROUP_RO            = 0x010, /* /sys/fs/cgroup (partial mount, read-only) */
	LXC_AUTO_CGROUP_RW            = 0x020, /* /sys/fs/cgroup (partial mount, read-write) */
	LXC_AUTO_CGROUP_MIXED         = 0x030, /* /sys/fs/cgroup (partial mount, paths r/o, cgroup r/w) */
	LXC_AUTO_CGROUP_FULL_RO       = 0x040, /* /sys/fs/cgroup (full mount, read-only) */
	LXC_AUTO_CGROUP_FULL_RW       = 0x050, /* /sys/fs/cgroup (full mount, read-write) */
	LXC_AUTO_CGROUP_FULL_MIXED    = 0x060, /* /sys/fs/cgroup (full mount, parent r/o, own r/w) */
	/*
	 * These are defined in such a way as to retain binary compatibility
	 * with earlier versions of this code. If the previous mask is applied,
	 * both of these will default back to the _MIXED variants, which is
	 * safe.
	 */
	LXC_AUTO_CGROUP_NOSPEC        = 0x0B0, /* /sys/fs/cgroup (partial mount, r/w or mixed, depending on caps) */
	LXC_AUTO_CGROUP_FULL_NOSPEC   = 0x0E0, /* /sys/fs/cgroup (full mount, r/w or mixed, depending on caps) */
	LXC_AUTO_CGROUP_FORCE         = 0x100, /* mount cgroups even when cgroup namespaces are supported */
	LXC_AUTO_CGROUP_MASK          = 0x1F0, /* all known cgroup options, doe not contain LXC_AUTO_CGROUP_FORCE */
	LXC_AUTO_ALL_MASK             = 0x1FF, /* all known settings */
};

enum lxchooks {
	LXCHOOK_PRESTART,
	LXCHOOK_PREMOUNT,
	LXCHOOK_MOUNT,
	LXCHOOK_AUTODEV,
	LXCHOOK_START,
	LXCHOOK_STOP,
	LXCHOOK_POSTSTOP,
	LXCHOOK_CLONE,
	LXCHOOK_DESTROY,
	LXCHOOK_START_HOST,
	NUM_LXC_HOOKS
};

extern char *lxchook_names[NUM_LXC_HOOKS];

struct lxc_state_client {
	int clientfd;
	lxc_state_t states[MAX_STATE];
};

struct lxc_conf {
	/* Pointer to the name of the container. Do not free! */
	const char *name;
	bool is_execute;
	int reboot;
	signed long personality;
	struct utsname *utsname;

	struct {
		struct lxc_list cgroup;
		struct lxc_list cgroup2;
	};

	struct {
		struct lxc_list id_map;

		/*
		 * Pointer to the idmap entry for the container's root uid in
		 * the id_map list. Do not free!
		 */
		const struct id_map *root_nsuid_map;

		/*
		 * Pointer to the idmap entry for the container's root gid in
		 * the id_map list. Do not free!
		 */
		const struct id_map *root_nsgid_map;
	};

	struct lxc_list network;

	struct {
		char *fstab;
		int auto_mounts;
		struct lxc_list mount_list;
	};

	struct lxc_list caps;
	struct lxc_list keepcaps;

	/* /dev/tty<idx> devices */
	struct lxc_tty_info ttys;
	/* /dev/console device */
	struct lxc_terminal console;
	/* maximum pty devices allowed by devpts mount */
	size_t pty_max;

	struct lxc_rootfs rootfs;
	bool close_all_fds;

	struct {
		unsigned int hooks_version;
		struct lxc_list hooks[NUM_LXC_HOOKS];
	};

	char *lsm_aa_profile;
	unsigned int lsm_aa_allow_incomplete;
	char *lsm_se_context;
	int tmp_umount_proc;
	char *seccomp;  /* filename with the seccomp rules */
#if HAVE_SCMP_FILTER_CTX
	scmp_filter_ctx seccomp_ctx;
#endif
	int maincmd_fd;
	unsigned int autodev;  /* if 1, mount and fill a /dev at start */
	int haltsignal; /* signal used to halt container */
	int rebootsignal; /* signal used to reboot container */
	int stopsignal; /* signal used to hard stop container */
	char *rcfile;	/* Copy of the top level rcfile we read */

	/* Logfile and logleve can be set in a container config file. Those
	 * function as defaults. The defaults can be overriden by command line.
	 * However we don't want the command line specified values to be saved
	 * on c->save_config(). So we store the config file specified values
	 * here. */
	char *logfile; /* the logfile as specifed in config */
	int loglevel; /* loglevel as specifed in config (if any) */
	int logfd;

	unsigned int start_auto;
	unsigned int start_delay;
	int start_order;
	struct lxc_list groups;
	int nbd_idx;

	/* unshare the mount namespace in the monitor */
	unsigned int monitor_unshare;

	/* set to true when rootfs has been setup */
	bool rootfs_setup;

	/* list of included files */
	struct lxc_list includes;
	/* config entries which are not "lxc.*" are aliens */
	struct lxc_list aliens;

	/* list of environment variables we'll add to the container when
	 * started */
	struct lxc_list environment;

	/* text representation of the config file */
	char *unexpanded_config;
	size_t unexpanded_len, unexpanded_alloced;

	/* default command for lxc-execute */
	char *execute_cmd;

	/* init command */
	char *init_cmd;

	/* if running in a new user namespace, the UID/GID that init and COMMAND
	 * should run under when using lxc-execute */
	uid_t init_uid;
	gid_t init_gid;

	/* indicator if the container will be destroyed on shutdown */
	unsigned int ephemeral;

	/* The facility to pass to syslog. Let's users establish as what type of
	 * program liblxc is supposed to write to the syslog. */
	char *syslog;

	/* Whether PR_SET_NO_NEW_PRIVS will be set for the container. */
	bool no_new_privs;

	/* RLIMIT_* limits */
	struct lxc_list limits;

	/* Contains generic info about the cgroup configuration for this
	 * container. Note that struct lxc_cgroup contains a union. It is only
	 * valid to access the members of the anonymous "meta" struct within
	 * that union.
	 */
	struct lxc_cgroup cgroup_meta;

	struct {
		int ns_clone;
		int ns_keep;
		char *ns_share[LXC_NS_MAX];
	};

	/* init working directory */
	char *init_cwd;

	/* A list of clients registered to be informed about a container state. */
	struct lxc_list state_clients;

	/* sysctls */
	struct lxc_list sysctls;

	/* procs */
	struct lxc_list procs;
};

extern int write_id_mapping(enum idtype idtype, pid_t pid, const char *buf,
			    size_t buf_size);

#ifdef HAVE_TLS
extern __thread struct lxc_conf *current_config;
#else
extern struct lxc_conf *current_config;
#endif

extern int run_lxc_hooks(const char *name, char *hook, struct lxc_conf *conf,
			 char *argv[]);
extern int detect_shared_rootfs(void);
extern struct lxc_conf *lxc_conf_init(void);
extern void lxc_conf_free(struct lxc_conf *conf);
extern int pin_rootfs(const char *rootfs);
extern int lxc_map_ids(struct lxc_list *idmap, pid_t pid);
extern int lxc_create_tty(const char *name, struct lxc_conf *conf);
extern void lxc_delete_tty(struct lxc_tty_info *ttys);
extern int lxc_clear_config_caps(struct lxc_conf *c);
extern int lxc_clear_config_keepcaps(struct lxc_conf *c);
extern int lxc_clear_cgroups(struct lxc_conf *c, const char *key, int version);
extern int lxc_clear_mount_entries(struct lxc_conf *c);
extern int lxc_clear_automounts(struct lxc_conf *c);
extern int lxc_clear_hooks(struct lxc_conf *c, const char *key);
extern int lxc_clear_idmaps(struct lxc_conf *c);
extern int lxc_clear_groups(struct lxc_conf *c);
extern int lxc_clear_environment(struct lxc_conf *c);
extern int lxc_clear_limits(struct lxc_conf *c, const char *key);
extern int lxc_delete_autodev(struct lxc_handler *handler);
extern void lxc_clear_includes(struct lxc_conf *conf);
extern int do_rootfs_setup(struct lxc_conf *conf, const char *name,
			   const char *lxcpath);
extern int lxc_setup(struct lxc_handler *handler);
extern int lxc_setup_parent(struct lxc_handler *handler);
extern int setup_resource_limits(struct lxc_list *limits, pid_t pid);
extern int find_unmapped_nsid(struct lxc_conf *conf, enum idtype idtype);
extern int mapped_hostid(unsigned id, struct lxc_conf *conf,
			 enum idtype idtype);
extern int chown_mapped_root(const char *path, struct lxc_conf *conf);
extern int userns_exec_1(struct lxc_conf *conf, int (*fn)(void *), void *data,
			 const char *fn_name);
extern int userns_exec_full(struct lxc_conf *conf, int (*fn)(void *),
			    void *data, const char *fn_name);
extern int parse_mntopts(const char *mntopts, unsigned long *mntflags,
			 char **mntdata);
extern void tmp_proc_unmount(struct lxc_conf *lxc_conf);
extern void remount_all_slave(void);
extern void suggest_default_idmap(void);
extern FILE *make_anonymous_mount_file(struct lxc_list *mount);
extern struct lxc_list *sort_cgroup_settings(struct lxc_list *cgroup_settings);
extern unsigned long add_required_remount_flags(const char *s, const char *d,
						unsigned long flags);
extern int run_script(const char *name, const char *section, const char *script,
		      ...);
extern int run_script_argv(const char *name, unsigned int hook_version,
			   const char *section, const char *script,
			   const char *hookname, char **argsin);
extern int in_caplist(int cap, struct lxc_list *caps);
extern int setup_sysctl_parameters(struct lxc_list *sysctls);
extern int lxc_clear_sysctls(struct lxc_conf *c, const char *key);
extern int setup_proc_filesystem(struct lxc_list *procs, pid_t pid);
extern int lxc_clear_procs(struct lxc_conf *c, const char *key);

#endif /* __LXC_CONF_H */
Commit	Line	Data
0ad19a3f	1	/*
	2	* lxc: linux Container library
	3	*
	4	* (C) Copyright IBM Corp. 2007, 2008
	5	*
	6	* Authors:
9afe19d6	7	* Daniel Lezcano <daniel.lezcano at free.fr>
0ad19a3f	8	*
	9	* This library is free software; you can redistribute it and/or
	10	* modify it under the terms of the GNU Lesser General Public
	11	* License as published by the Free Software Foundation; either
	12	* version 2.1 of the License, or (at your option) any later version.
	13	*
	14	* This library is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	17	* Lesser General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU Lesser General Public
	20	* License along with this library; if not, write to the Free Software
250b1eec	21	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
0ad19a3f	22	*/
f1a4a029 ÇO	23	#ifndef __LXC_CONF_H
f1a4a029 ÇO	24	#define __LXC_CONF_H
0ad19a3f	25
f424fa8f SG	26	#include "config.h"
f424fa8f SG	27
9fc7f8c0	28	#include <stdio.h>
74a2b586	29	#include <net/if.h>
1a0e70ac	30	#include <netinet/in.h>
b0a33c1e	31	#include <sys/param.h>
8173e600	32	#include <sys/types.h>
c6d09e15 WB	33	#if HAVE_SYS_RESOURCE_H
	34	#include <sys/resource.h>
	35	#endif
19a26f82	36	#include <stdbool.h>
0ad19a3f	37
f2363e38	38	#include "list.h"
732375f5	39	#include "ringbuf.h"
f2363e38	40	#include "start.h" /* for lxc_handler */
0ed9b1bc	41	#include "terminal.h"
e3b4c4c4	42
769872f9 SH	43	#if HAVE_SCMP_FILTER_CTX
	44	typedef void * scmp_filter_ctx;
	45	#endif
	46
97e9cfa0 SH	47	/* worth moving to configure.ac? */
	48	#define subuidfile "/etc/subuid"
	49	#define subgidfile "/etc/subgid"
	50
0ad19a3f	51	/*
43654d34 CB	52	* Defines a generic struct to configure the control group. It is up to the
43654d34 CB	53	* programmer to specify the right subsystem.
ec64264d	54	* @subsystem : the targeted subsystem
576f946d	55	* @value : the value to set
54860ed0 CB	56	* @version : The version of the cgroup filesystem on which the controller
54860ed0 CB	57	* resides.
43654d34 CB	58	*
	59	* @controllers : The controllers to use for this container.
	60	* @dir : The name of the directory containing the container's cgroup.
	61	* Not that this is a per-container setting.
0ad19a3f	62	*/
0ad19a3f	63	struct lxc_cgroup {
43654d34 CB	64	union {
	65	/* information about a specific controller */
	66	struct /* controller */ {
54860ed0	67	int version;
43654d34 CB	68	char *subsystem;
	69	char *value;
	70	};
	71
	72	/* meta information about cgroup configuration */
	73	struct /* meta */ {
	74	char *controllers;
	75	char *dir;
	76	};
	77	};
0ad19a3f	78	};
0ad19a3f	79
c6d09e15	80	#if !HAVE_SYS_RESOURCE_H
3a0e314d	81	#define RLIM_INFINITY ((unsigned long)-1)
c6d09e15 WB	82	struct rlimit {
	83	unsigned long rlim_cur;
	84	unsigned long rlim_max;
	85	};
	86	#endif
3a0e314d	87
c6d09e15 WB	88	/*
	89	* Defines a structure to configure resource limits to set via setrlimit().
	90	* @resource : the resource name in lowercase without the RLIMIT_ prefix
	91	* @limit : the limit to set
	92	*/
	93	struct lxc_limit {
	94	char *resource;
	95	struct rlimit limit;
	96	};
	97
f6d3e3e4 SH	98	enum idtype {
	99	ID_TYPE_UID,
	100	ID_TYPE_GID
	101	};
	102
7edd0540 L	103	/*
	104	* Defines a structure to configure kernel parameters at runtime.
	105	* @key : the kernel parameters will be configured without the "lxc.sysctl" prefix
	106	* @value : the value to set
	107	*/
	108	struct lxc_sysctl {
	109	char *key;
	110	char *value;
	111	};
	112
61d7a733 YT	113	/*
	114	* Defines a structure to configure proc filesystem at runtime.
	115	* @filename : the proc filesystem will be configured without the "lxc.proc" prefix
	116	* @value : the value to set
	117	*/
	118	struct lxc_proc {
	119	char *filename;
	120	char *value;
	121	};
	122
f6d3e3e4 SH	123	/*
f6d3e3e4 SH	124	* id_map is an id map entry. Form in confile is:
bdcbb6b3 CB	125	* lxc.idmap = u 0 9800 100
	126	* lxc.idmap = u 1000 9900 100
	127	* lxc.idmap = g 0 9800 100
	128	* lxc.idmap = g 1000 9900 100
251d0d2a DE	129	* meaning the container can use uids and gids 0-99 and 1000-1099,
	130	* with [ug]id 0 mapping to [ug]id 9800 on the host, and [ug]id 1000 to
	131	* [ug]id 9900 on the host.
f6d3e3e4 SH	132	*/
	133	struct id_map {
	134	enum idtype idtype;
251d0d2a	135	unsigned long hostid, nsid, range;
f6d3e3e4 SH	136	};
f6d3e3e4 SH	137
0e4be3cf	138	/* Defines the number of tty configured and contains the
a589434e	139	* instantiated ptys
885766f5	140	* @max = number of configured ttys
b0a33c1e	141	*/
b0a33c1e	142	struct lxc_tty_info {
885766f5 CB	143	size_t max;
	144	char *dir;
	145	char *tty_names;
2520facd	146	struct lxc_terminal_info *tty;
b0a33c1e	147	};
b0a33c1e	148
13bb312d	149	/* Defines a structure to store the rootfs location, the
33fcb7a0	150	* optionals pivot_root, rootfs mount paths
59bb8698 SH	151	* @path : the rootfs source (directory or device)
	152	* @mount : where it is mounted
	153	* @options : mount options
b3b8c97f	154	* @bev_type : optional backing store type
33fcb7a0 DL	155	*/
	156	struct lxc_rootfs {
	157	char *path;
23b7ea69	158	char *mount;
a17b1e65	159	char *options;
b3b8c97f	160	char *bdev_type;
33fcb7a0 DL	161	};
33fcb7a0 DL	162
368bbc02 CS	163	/*
	164	* Automatic mounts for LXC to perform inside the container
	165	*/
	166	enum {
3a0e314d CB	167	LXC_AUTO_PROC_RW = 0x001, /* /proc read-write */
3a0e314d CB	168	LXC_AUTO_PROC_MIXED = 0x002, /* /proc/sys and /proc/sysrq-trigger read-only */
b06b8511 CS	169	LXC_AUTO_PROC_MASK = 0x003,
b06b8511 CS	170
3a0e314d CB	171	LXC_AUTO_SYS_RW = 0x004, /* /sys */
	172	LXC_AUTO_SYS_RO = 0x008, /* /sys read-only */
	173	LXC_AUTO_SYS_MIXED = 0x00C, /* /sys read-only and /sys/class/net read-write */
b06b8511 CS	174	LXC_AUTO_SYS_MASK = 0x00C,
b06b8511 CS	175
3a0e314d CB	176	LXC_AUTO_CGROUP_RO = 0x010, /* /sys/fs/cgroup (partial mount, read-only) */
	177	LXC_AUTO_CGROUP_RW = 0x020, /* /sys/fs/cgroup (partial mount, read-write) */
	178	LXC_AUTO_CGROUP_MIXED = 0x030, /* /sys/fs/cgroup (partial mount, paths r/o, cgroup r/w) */
	179	LXC_AUTO_CGROUP_FULL_RO = 0x040, /* /sys/fs/cgroup (full mount, read-only) */
	180	LXC_AUTO_CGROUP_FULL_RW = 0x050, /* /sys/fs/cgroup (full mount, read-write) */
	181	LXC_AUTO_CGROUP_FULL_MIXED = 0x060, /* /sys/fs/cgroup (full mount, parent r/o, own r/w) */
	182	/*
	183	* These are defined in such a way as to retain binary compatibility
	184	* with earlier versions of this code. If the previous mask is applied,
	185	* both of these will default back to the _MIXED variants, which is
	186	* safe.
	187	*/
	188	LXC_AUTO_CGROUP_NOSPEC = 0x0B0, /* /sys/fs/cgroup (partial mount, r/w or mixed, depending on caps) */
	189	LXC_AUTO_CGROUP_FULL_NOSPEC = 0x0E0, /* /sys/fs/cgroup (full mount, r/w or mixed, depending on caps) */
	190	LXC_AUTO_CGROUP_FORCE = 0x100, /* mount cgroups even when cgroup namespaces are supported */
	191	LXC_AUTO_CGROUP_MASK = 0x1F0, /* all known cgroup options, doe not contain LXC_AUTO_CGROUP_FORCE */
	192	LXC_AUTO_ALL_MASK = 0x1FF, /* all known settings */
368bbc02 CS	193	};
368bbc02 CS	194
26ddeedd	195	enum lxchooks {
1a0e70ac CB	196	LXCHOOK_PRESTART,
	197	LXCHOOK_PREMOUNT,
	198	LXCHOOK_MOUNT,
	199	LXCHOOK_AUTODEV,
	200	LXCHOOK_START,
	201	LXCHOOK_STOP,
	202	LXCHOOK_POSTSTOP,
	203	LXCHOOK_CLONE,
	204	LXCHOOK_DESTROY,
08dd2805	205	LXCHOOK_START_HOST,
1a0e70ac CB	206	NUM_LXC_HOOKS
1a0e70ac CB	207	};
72d0e1cb	208
811ef482	209	extern char *lxchook_names[NUM_LXC_HOOKS];
7b35f3d6	210
d39b10eb CB	211	struct lxc_state_client {
	212	int clientfd;
	213	lxc_state_t states[MAX_STATE];
	214	};
	215
571e6ec8	216	struct lxc_conf {
c7b17051 CB	217	/* Pointer to the name of the container. Do not free! */
c7b17051 CB	218	const char *name;
07c4ea31	219	bool is_execute;
91480a0f	220	int reboot;
9b8e3c96	221	signed long personality;
571e6ec8	222	struct utsname *utsname;
edd64e17	223
54860ed0 CB	224	struct {
	225	struct lxc_list cgroup;
	226	struct lxc_list cgroup2;
	227	};
edd64e17	228
46ad64ab CB	229	struct {
46ad64ab CB	230	struct lxc_list id_map;
c7e345ae	231
edd64e17 CB	232	/*
	233	* Pointer to the idmap entry for the container's root uid in
	234	* the id_map list. Do not free!
	235	*/
5173b710	236	const struct id_map *root_nsuid_map;
c7e345ae	237
edd64e17 CB	238	/*
	239	* Pointer to the idmap entry for the container's root gid in
	240	* the id_map list. Do not free!
	241	*/
5173b710	242	const struct id_map *root_nsgid_map;
46ad64ab	243	};
edd64e17	244
5f4535a3	245	struct lxc_list network;
448d7b0c CB	246
	247	struct {
	248	char *fstab;
	249	int auto_mounts;
	250	struct lxc_list mount_list;
	251	};
	252
81810dd1	253	struct lxc_list caps;
1fb86a7c	254	struct lxc_list keepcaps;
885766f5	255
a2db71c0	256	/* /dev/tty<idx> devices */
885766f5	257	struct lxc_tty_info ttys;
a2db71c0 CB	258	/* /dev/console device */
	259	struct lxc_terminal console;
	260	/* maximum pty devices allowed by devpts mount */
e528c735	261	size_t pty_max;
885766f5	262
33fcb7a0	263	struct lxc_rootfs rootfs;
b3187a81	264	bool close_all_fds;
44ae0fb6 CB	265
	266	struct {
	267	unsigned int hooks_version;
	268	struct lxc_list hooks[NUM_LXC_HOOKS];
	269	};
4a85ce2a	270
fe4de9a6	271	char *lsm_aa_profile;
a56e2df9	272	unsigned int lsm_aa_allow_incomplete;
fe4de9a6	273	char *lsm_se_context;
5112cd70	274	int tmp_umount_proc;
1a0e70ac	275	char seccomp; / filename with the seccomp rules */
769872f9	276	#if HAVE_SCMP_FILTER_CTX
d58c6ad0	277	scmp_filter_ctx seccomp_ctx;
769872f9	278	#endif
72d0e1cb	279	int maincmd_fd;
1a0e70ac CB	280	unsigned int autodev; /* if 1, mount and fill a /dev at start */
	281	int haltsignal; /* signal used to halt container */
	282	int rebootsignal; /* signal used to reboot container */
	283	int stopsignal; /* signal used to hard stop container */
	284	char rcfile; / Copy of the top level rcfile we read */
	285
	286	/* Logfile and logleve can be set in a container config file. Those
	287	* function as defaults. The defaults can be overriden by command line.
	288	* However we don't want the command line specified values to be saved
	289	* on c->save_config(). So we store the config file specified values
	290	* here. */
	291	char logfile; / the logfile as specifed in config */
	292	int loglevel; /* loglevel as specifed in config (if any) */
858377e4	293	int logfd;
9f30a190	294
3590152f CB	295	unsigned int start_auto;
3590152f CB	296	unsigned int start_delay;
ee1e7aa0 SG	297	int start_order;
ee1e7aa0 SG	298	struct lxc_list groups;
76a26f55	299	int nbd_idx;
35120d9c	300
a8dfe4e0	301	/* unshare the mount namespace in the monitor */
226dc30e	302	unsigned int monitor_unshare;
a8dfe4e0	303
35120d9c SH	304	/* set to true when rootfs has been setup */
35120d9c SH	305	bool rootfs_setup;
f979ac15 SH	306
	307	/* list of included files */
	308	struct lxc_list includes;
4184c3e1 SH	309	/* config entries which are not "lxc." are aliens /
4184c3e1 SH	310	struct lxc_list aliens;
7c661726 MP	311
	312	/* list of environment variables we'll add to the container when
	313	* started */
	314	struct lxc_list environment;
6b0d5538 SH	315
	316	/* text representation of the config file */
	317	char *unexpanded_config;
	318	size_t unexpanded_len, unexpanded_alloced;
67c660d0	319
5cda27c1 SH	320	/* default command for lxc-execute */
	321	char *execute_cmd;
	322
67c660d0 SG	323	/* init command */
67c660d0 SG	324	char *init_cmd;
56f8ff00	325
72bb04e4 PT	326	/* if running in a new user namespace, the UID/GID that init and COMMAND
72bb04e4 PT	327	* should run under when using lxc-execute */
c5cd20ce PT	328	uid_t init_uid;
c5cd20ce PT	329	gid_t init_gid;
8796becf CB	330
8796becf CB	331	/* indicator if the container will be destroyed on shutdown */
66ffdb1a	332	unsigned int ephemeral;
76d0127f CB	333
	334	/* The facility to pass to syslog. Let's users establish as what type of
	335	* program liblxc is supposed to write to the syslog. */
	336	char *syslog;
5a46f283 CB	337
	338	/* Whether PR_SET_NO_NEW_PRIVS will be set for the container. */
	339	bool no_new_privs;
c6d09e15 WB	340
	341	/* RLIMIT_* limits */
	342	struct lxc_list limits;
7ec2e32a	343
43654d34 CB	344	/* Contains generic info about the cgroup configuration for this
	345	* container. Note that struct lxc_cgroup contains a union. It is only
	346	* valid to access the members of the anonymous "meta" struct within
	347	* that union.
	348	*/
	349	struct lxc_cgroup cgroup_meta;
28d9e29e	350
b074bbf1	351	struct {
1d8d3676	352	int ns_clone;
abeb5bba	353	int ns_keep;
b074bbf1 CB	354	char *ns_share[LXC_NS_MAX];
b074bbf1 CB	355	};
3c491553 L	356
3c491553 L	357	/* init working directory */
9e132956	358	char *init_cwd;
3c491553	359
d39b10eb CB	360	/* A list of clients registered to be informed about a container state. */
d39b10eb CB	361	struct lxc_list state_clients;
7edd0540 L	362
	363	/* sysctls */
	364	struct lxc_list sysctls;
61d7a733 YT	365
	366	/* procs */
	367	struct lxc_list procs;
571e6ec8 DL	368	};
571e6ec8 DL	369
a19b974f	370	extern int write_id_mapping(enum idtype idtype, pid_t pid, const char *buf,
344c9d81 MPS	371	size_t buf_size);
344c9d81 MPS	372
858377e4 SH	373	#ifdef HAVE_TLS
	374	extern __thread struct lxc_conf *current_config;
	375	#else
	376	extern struct lxc_conf *current_config;
	377	#endif
	378
1a0e70ac	379	extern int run_lxc_hooks(const char name, char hook, struct lxc_conf *conf,
14a7b0f9	380	char *argv[]);
cc28d0b0	381	extern int detect_shared_rootfs(void);
7b379ab3	382	extern struct lxc_conf *lxc_conf_init(void);
8eb5694b	383	extern void lxc_conf_free(struct lxc_conf *conf);
0c547523	384	extern int pin_rootfs(const char *rootfs);
f6d3e3e4	385	extern int lxc_map_ids(struct lxc_list *idmap, pid_t pid);
5e4a62bf	386	extern int lxc_create_tty(const char name, struct lxc_conf conf);
0e4be3cf	387	extern void lxc_delete_tty(struct lxc_tty_info *ttys);
72d0e1cb	388	extern int lxc_clear_config_caps(struct lxc_conf *c);
1fb86a7c	389	extern int lxc_clear_config_keepcaps(struct lxc_conf *c);
54860ed0	390	extern int lxc_clear_cgroups(struct lxc_conf c, const char key, int version);
72d0e1cb	391	extern int lxc_clear_mount_entries(struct lxc_conf *c);
b099e9e9	392	extern int lxc_clear_automounts(struct lxc_conf *c);
12a50cc6	393	extern int lxc_clear_hooks(struct lxc_conf c, const char key);
7d0eb87e	394	extern int lxc_clear_idmaps(struct lxc_conf *c);
ee1e7aa0	395	extern int lxc_clear_groups(struct lxc_conf *c);
ab799c0b	396	extern int lxc_clear_environment(struct lxc_conf *c);
c6d09e15	397	extern int lxc_clear_limits(struct lxc_conf c, const char key);
f0d02950	398	extern int lxc_delete_autodev(struct lxc_handler *handler);
c7b15d1e	399	extern void lxc_clear_includes(struct lxc_conf *conf);
35120d9c SH	400	extern int do_rootfs_setup(struct lxc_conf conf, const char name,
35120d9c SH	401	const char *lxcpath);
3b988b33	402	extern int lxc_setup(struct lxc_handler *handler);
732375f5	403	extern int lxc_setup_parent(struct lxc_handler *handler);
c6d09e15	404	extern int setup_resource_limits(struct lxc_list *limits, pid_t pid);
339efad9	405	extern int find_unmapped_nsid(struct lxc_conf *conf, enum idtype idtype);
1a0e70ac CB	406	extern int mapped_hostid(unsigned id, struct lxc_conf *conf,
1a0e70ac CB	407	enum idtype idtype);
41dc7155	408	extern int chown_mapped_root(const char path, struct lxc_conf conf);
c9b7c33e CB	409	extern int userns_exec_1(struct lxc_conf conf, int (fn)(void ), void data,
c9b7c33e CB	410	const char *fn_name);
415a8851 CB	411	extern int userns_exec_full(struct lxc_conf conf, int (fn)(void *),
415a8851 CB	412	void data, const char fn_name);
a17b1e65 SG	413	extern int parse_mntopts(const char mntopts, unsigned long mntflags,
a17b1e65 SG	414	char **mntdata);
5112cd70	415	extern void tmp_proc_unmount(struct lxc_conf *lxc_conf);
1a0e70ac	416	extern void remount_all_slave(void);
97e9cfa0	417	extern void suggest_default_idmap(void);
1a0e70ac CB	418	extern FILE make_anonymous_mount_file(struct lxc_list mount);
	419	extern struct lxc_list sort_cgroup_settings(struct lxc_list cgroup_settings);
	420	extern unsigned long add_required_remount_flags(const char s, const char d,
	421	unsigned long flags);
811ef482 CB	422	extern int run_script(const char name, const char section, const char *script,
811ef482 CB	423	...);
14a7b0f9 CB	424	extern int run_script_argv(const char *name, unsigned int hook_version,
	425	const char section, const char script,
	426	const char hookname, char *argsin);
b635e92d	427	extern int in_caplist(int cap, struct lxc_list *caps);
7edd0540 L	428	extern int setup_sysctl_parameters(struct lxc_list *sysctls);
7edd0540 L	429	extern int lxc_clear_sysctls(struct lxc_conf c, const char key);
61d7a733 YT	430	extern int setup_proc_filesystem(struct lxc_list *procs, pid_t pid);
61d7a733 YT	431	extern int lxc_clear_procs(struct lxc_conf c, const char key);
5ae72b98	432
1a0e70ac	433	#endif /* __LXC_CONF_H */