[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 <netinet/in.h>
#include <net/if.h>
#include <sys/param.h>
#include <sys/types.h>
#include <stdbool.h>

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

#if HAVE_SCMP_FILTER_CTX
typedef void * scmp_filter_ctx;
#endif

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

enum {
	LXC_NET_EMPTY,
	LXC_NET_VETH,
	LXC_NET_MACVLAN,
	LXC_NET_PHYS,
	LXC_NET_VLAN,
	LXC_NET_NONE,
	LXC_NET_MAXCONFTYPE,
};

/*
 * Defines the structure to configure an ipv4 address
 * @address   : ipv4 address
 * @broadcast : ipv4 broadcast address
 * @mask      : network mask
 */
struct lxc_inetdev {
	struct in_addr addr;
	struct in_addr bcast;
	int prefix;
};

struct lxc_route {
	struct in_addr addr;
};

/*
 * Defines the structure to configure an ipv6 address
 * @flags     : set the address up
 * @address   : ipv6 address
 * @broadcast : ipv6 broadcast address
 * @mask      : network mask
 */
struct lxc_inet6dev {
	struct in6_addr addr;
	struct in6_addr mcast;
	struct in6_addr acast;
	int prefix;
};

struct lxc_route6 {
	struct in6_addr addr;
};

struct ifla_veth {
	char *pair; /* pair name */
	char veth1[IFNAMSIZ]; /* needed for deconf */
};

struct ifla_vlan {
	unsigned int   flags;
	unsigned int   fmask;
	unsigned short   vid;
	unsigned short   pad;
};

struct ifla_macvlan {
	int mode; /* private, vepa, bridge, passthru */
};

union netdev_p {
	struct ifla_veth veth_attr;
	struct ifla_vlan vlan_attr;
	struct ifla_macvlan macvlan_attr;
};

/*
 * Defines a structure to configure a network device
 * @link       : lxc.network.link, name of bridge or host iface to attach if any
 * @name       : lxc.network.name, name of iface on the container side
 * @flags      : flag of the network device (IFF_UP, ... )
 * @ipv4       : a list of ipv4 addresses to be set on the network device
 * @ipv6       : a list of ipv6 addresses to be set on the network device
 * @upscript   : a script filename to be executed during interface configuration
 * @downscript : a script filename to be executed during interface destruction
 */
struct lxc_netdev {
	int type;
	int flags;
	int ifindex;
	char *link;
	char *name;
	char *hwaddr;
	char *mtu;
	union netdev_p priv;
	struct lxc_list ipv4;
	struct lxc_list ipv6;
	struct in_addr *ipv4_gateway;
	bool ipv4_gateway_auto;
	struct in6_addr *ipv6_gateway;
	bool ipv6_gateway_auto;
	char *upscript;
	char *downscript;
};

/*
 * 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
 */
struct lxc_cgroup {
	char *subsystem;
	char *value;
};

enum idtype {
	ID_TYPE_UID,
	ID_TYPE_GID
};

/*
 * id_map is an id map entry.  Form in confile is:
 * lxc.id_map = u 0    9800 100
 * lxc.id_map = u 1000 9900 100
 * lxc.id_map = g 0    9800 100
 * lxc.id_map = 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 a structure containing a pty information for
 * virtualizing a tty
 * @name   : the path name of the slave pty side
 * @master : the file descriptor of the master
 * @slave  : the file descriptor of the slave
 */
struct lxc_pty_info {
	char name[MAXPATHLEN];
	int master;
	int slave;
	int busy;
};

/*
 * Defines the number of tty configured and contains the
 * instantiated ptys
 * @nbtty = number of configured ttys
 */
struct lxc_tty_info {
	int nbtty;
	struct lxc_pty_info *pty_info;
};

struct lxc_tty_state;

/*
 * Defines the structure to store the console information
 * @peer   : the file descriptor put/get console traffic
 * @name   : the file name of the slave pty
 */
struct lxc_console {
	int slave;
	int master;
	int peer;
	struct lxc_pty_info peerpty;
	struct lxc_epoll_descr *descr;
	char *path;
	char *log_path;
	int log_fd;
	char name[MAXPATHLEN];
	struct termios *tios;
	struct lxc_tty_state *tty_state;
};

/*
 * Defines a structure to store the rootfs location, the
 * optionals pivot_root, rootfs mount paths
 * @rootfs     : a path to the rootfs
 * @pivot_root : a path to a pivot_root location to be used
 */
struct lxc_rootfs {
	char *path;
	char *mount;
	char *pivot;
	char *options;
};

/*
 * 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_MASK          = 0x0F0,

	LXC_AUTO_ALL_MASK             = 0x0FF,   /* all known settings */
};

/*
 * Defines the global container configuration
 * @rootfs     : root directory to run the container
 * @pivotdir   : pivotdir path, if not set default will be used
 * @mount      : list of mount points
 * @tty        : numbers of tty
 * @pts        : new pts instance
 * @mount_list : list of mount point (alternative to fstab file)
 * @network    : network configuration
 * @utsname    : container utsname
 * @fstab      : path to a fstab file format
 * @caps       : list of the capabilities to drop
 * @keepcaps   : list of the capabilities to keep
 * @tty_info   : tty data
 * @console    : console data
 * @ttydir     : directory (under /dev) in which to create console and ttys
 * @lsm_aa_profile : apparmor profile to switch to or NULL
 * @lsm_se_context : selinux type to switch to or NULL
 */
enum lxchooks {
	LXCHOOK_PRESTART, LXCHOOK_PREMOUNT, LXCHOOK_MOUNT, LXCHOOK_AUTODEV,
	LXCHOOK_START, LXCHOOK_POSTSTOP, LXCHOOK_CLONE, LXCHOOK_DESTROY,
	NUM_LXC_HOOKS};
extern char *lxchook_names[NUM_LXC_HOOKS];

struct saved_nic {
	int ifindex;
	char *orig_name;
};

struct lxc_conf {
	int is_execute;
	char *fstab;
	int tty;
	int pts;
	int reboot;
	int need_utmp_watch;
	signed long personality;
	struct utsname *utsname;
	struct lxc_list cgroup;
	struct lxc_list id_map;
	struct lxc_list network;
	struct saved_nic *saved_nics;
	int num_savednics;
	int auto_mounts;
	struct lxc_list mount_list;
	struct lxc_list caps;
	struct lxc_list keepcaps;
	struct lxc_tty_info tty_info;
	char *pty_names; // comma-separated list of lxc.tty pty names
	struct lxc_console console;
	struct lxc_rootfs rootfs;
	char *ttydir;
	int close_all_fds;
	struct lxc_list hooks[NUM_LXC_HOOKS];

	char *lsm_aa_profile;
	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;
	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
	int kmsg;  // if 1, create /dev/kmsg symlink
	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;

	int inherit_ns_fd[LXC_NS_MAX];

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

	/* 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;

	/* init command */
	char *init_cmd;

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

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

int run_lxc_hooks(const char *name, char *hook, struct lxc_conf *conf,
		  const char *lxcpath, char *argv[]);

extern int detect_shared_rootfs(void);

/*
 * Initialize the lxc configuration structure
 */
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_requests_empty_network(struct lxc_handler *handler);
extern int lxc_create_network(struct lxc_handler *handler);
extern void lxc_delete_network(struct lxc_handler *handler);
extern int lxc_assign_network(struct lxc_list *networks, pid_t pid);
extern int lxc_map_ids(struct lxc_list *idmap, pid_t pid);
extern int lxc_find_gateway_addresses(struct lxc_handler *handler);

extern int lxc_create_tty(const char *name, struct lxc_conf *conf);
extern void lxc_delete_tty(struct lxc_tty_info *tty_info);

extern int lxc_clear_config_network(struct lxc_conf *c);
extern int lxc_clear_nic(struct lxc_conf *c, const char *key);
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);
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_delete_autodev(struct lxc_handler *handler);

extern int do_rootfs_setup(struct lxc_conf *conf, const char *name,
			   const char *lxcpath);

/*
 * Configure the container from inside
 */

struct cgroup_process_info;
extern int lxc_setup(struct lxc_handler *handler);

extern void lxc_rename_phys_nics_on_shutdown(int netnsfd, struct lxc_conf *conf);

extern int find_unmapped_nsuid(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(char *path, struct lxc_conf *conf);
extern int ttys_shift_ids(struct lxc_conf *c);
extern int userns_exec_1(struct lxc_conf *conf, int (*fn)(void *), void *data);
extern int parse_mntopts(const char *mntopts, unsigned long *mntflags,
			 char **mntdata);
extern void tmp_proc_unmount(struct lxc_conf *lxc_conf);
void remount_all_slave(void);
extern void suggest_default_idmap(void);
FILE *write_mount_file(struct lxc_list *mount);
struct lxc_list *sort_cgroup_settings(struct lxc_list* cgroup_settings);
#endif
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>
0ad19a3f	29	#include <netinet/in.h>
74a2b586	30	#include <net/if.h>
b0a33c1e	31	#include <sys/param.h>
8173e600	32	#include <sys/types.h>
19a26f82	33	#include <stdbool.h>
0ad19a3f	34
f2363e38 ÇO	35	#include "list.h"
f2363e38 ÇO	36	#include "start.h" /* for lxc_handler */
e3b4c4c4	37
769872f9 SH	38	#if HAVE_SCMP_FILTER_CTX
	39	typedef void * scmp_filter_ctx;
	40	#endif
	41
97e9cfa0 SH	42	/* worth moving to configure.ac? */
	43	#define subuidfile "/etc/subuid"
	44	#define subgidfile "/etc/subgid"
	45
13954cce	46	enum {
24654103 DL	47	LXC_NET_EMPTY,
	48	LXC_NET_VETH,
	49	LXC_NET_MACVLAN,
	50	LXC_NET_PHYS,
	51	LXC_NET_VLAN,
26b797f3	52	LXC_NET_NONE,
24654103	53	LXC_NET_MAXCONFTYPE,
0ad19a3f	54	};
	55
	56	/*
	57	* Defines the structure to configure an ipv4 address
	58	* @address : ipv4 address
	59	* @broadcast : ipv4 broadcast address
	60	* @mask : network mask
	61	*/
	62	struct lxc_inetdev {
	63	struct in_addr addr;
	64	struct in_addr bcast;
	65	int prefix;
	66	};
	67
	68	struct lxc_route {
	69	struct in_addr addr;
	70	};
	71
	72	/*
	73	* Defines the structure to configure an ipv6 address
	74	* @flags : set the address up
	75	* @address : ipv6 address
	76	* @broadcast : ipv6 broadcast address
	77	* @mask : network mask
	78	*/
	79	struct lxc_inet6dev {
	80	struct in6_addr addr;
0093bb8c	81	struct in6_addr mcast;
0ad19a3f	82	struct in6_addr acast;
	83	int prefix;
	84	};
	85
	86	struct lxc_route6 {
	87	struct in6_addr addr;
	88	};
26c39028	89
e892973e DL	90	struct ifla_veth {
e892973e DL	91	char pair; / pair name */
74a2b586	92	char veth1[IFNAMSIZ]; /* needed for deconf */
e892973e DL	93	};
e892973e DL	94
26c39028	95	struct ifla_vlan {
85dce4a5 NC	96	unsigned int flags;
85dce4a5 NC	97	unsigned int fmask;
7c11d57a SG	98	unsigned short vid;
7c11d57a SG	99	unsigned short pad;
26c39028 JHS	100	};
26c39028 JHS	101
e892973e	102	struct ifla_macvlan {
99854161	103	int mode; /* private, vepa, bridge, passthru */
e892973e DL	104	};
e892973e DL	105
f6cc1de1	106	union netdev_p {
e892973e	107	struct ifla_veth veth_attr;
f6cc1de1	108	struct ifla_vlan vlan_attr;
e892973e	109	struct ifla_macvlan macvlan_attr;
f6cc1de1 JHS	110	};
f6cc1de1 JHS	111
0ad19a3f	112	/*
0ad19a3f	113	* Defines a structure to configure a network device
e3b4c4c4 ST	114	* @link : lxc.network.link, name of bridge or host iface to attach if any
	115	* @name : lxc.network.name, name of iface on the container side
	116	* @flags : flag of the network device (IFF_UP, ... )
	117	* @ipv4 : a list of ipv4 addresses to be set on the network device
	118	* @ipv6 : a list of ipv6 addresses to be set on the network device
	119	* @upscript : a script filename to be executed during interface configuration
74a2b586	120	* @downscript : a script filename to be executed during interface destruction
0ad19a3f	121	*/
0ad19a3f	122	struct lxc_netdev {
5f4535a3	123	int type;
0ad19a3f	124	int flags;
82d5ae15	125	int ifindex;
9d083402 MT	126	char *link;
9d083402 MT	127	char *name;
0ad19a3f	128	char *hwaddr;
442cbbe6	129	char *mtu;
f6cc1de1	130	union netdev_p priv;
0ad19a3f	131	struct lxc_list ipv4;
0ad19a3f	132	struct lxc_list ipv6;
f8fee0e2	133	struct in_addr *ipv4_gateway;
19a26f82	134	bool ipv4_gateway_auto;
f8fee0e2	135	struct in6_addr *ipv6_gateway;
19a26f82	136	bool ipv6_gateway_auto;
e3b4c4c4	137	char *upscript;
74a2b586	138	char *downscript;
0ad19a3f	139	};
	140
	141	/*
576f946d	142	* Defines a generic struct to configure the control group.
576f946d	143	* It is up to the programmer to specify the right subsystem.
ec64264d	144	* @subsystem : the targeted subsystem
576f946d	145	* @value : the value to set
0ad19a3f	146	*/
0ad19a3f	147	struct lxc_cgroup {
576f946d	148	char *subsystem;
576f946d	149	char *value;
0ad19a3f	150	};
0ad19a3f	151
f6d3e3e4 SH	152	enum idtype {
	153	ID_TYPE_UID,
	154	ID_TYPE_GID
	155	};
	156
	157	/*
	158	* id_map is an id map entry. Form in confile is:
251d0d2a DE	159	* lxc.id_map = u 0 9800 100
	160	* lxc.id_map = u 1000 9900 100
	161	* lxc.id_map = g 0 9800 100
	162	* lxc.id_map = g 1000 9900 100
	163	* meaning the container can use uids and gids 0-99 and 1000-1099,
	164	* with [ug]id 0 mapping to [ug]id 9800 on the host, and [ug]id 1000 to
	165	* [ug]id 9900 on the host.
f6d3e3e4 SH	166	*/
	167	struct id_map {
	168	enum idtype idtype;
251d0d2a	169	unsigned long hostid, nsid, range;
f6d3e3e4 SH	170	};
f6d3e3e4 SH	171
b0a33c1e	172	/*
	173	* Defines a structure containing a pty information for
	174	* virtualizing a tty
	175	* @name : the path name of the slave pty side
	176	* @master : the file descriptor of the master
	177	* @slave : the file descriptor of the slave
	178	*/
	179	struct lxc_pty_info {
	180	char name[MAXPATHLEN];
	181	int master;
	182	int slave;
	183	int busy;
	184	};
	185
	186	/*
	187	* Defines the number of tty configured and contains the
a589434e	188	* instantiated ptys
b0a33c1e	189	* @nbtty = number of configured ttys
	190	*/
	191	struct lxc_tty_info {
	192	int nbtty;
	193	struct lxc_pty_info *pty_info;
	194	};
	195
b5159817 DE	196	struct lxc_tty_state;
b5159817 DE	197
63376d7d DL	198	/*
	199	* Defines the structure to store the console information
	200	* @peer : the file descriptor put/get console traffic
	201	* @name : the file name of the slave pty
	202	*/
	203	struct lxc_console {
	204	int slave;
	205	int master;
	206	int peer;
b5159817 DE	207	struct lxc_pty_info peerpty;
b5159817 DE	208	struct lxc_epoll_descr *descr;
28a4b0e5	209	char *path;
596a818d DE	210	char *log_path;
596a818d DE	211	int log_fd;
63376d7d	212	char name[MAXPATHLEN];
e0dc0de7	213	struct termios *tios;
b5159817	214	struct lxc_tty_state *tty_state;
63376d7d DL	215	};
63376d7d DL	216
33fcb7a0 DL	217	/*
	218	* Defines a structure to store the rootfs location, the
	219	* optionals pivot_root, rootfs mount paths
	220	* @rootfs : a path to the rootfs
	221	* @pivot_root : a path to a pivot_root location to be used
	222	*/
	223	struct lxc_rootfs {
	224	char *path;
23b7ea69	225	char *mount;
33fcb7a0	226	char *pivot;
a17b1e65	227	char *options;
33fcb7a0 DL	228	};
33fcb7a0 DL	229
368bbc02 CS	230	/*
	231	* Automatic mounts for LXC to perform inside the container
	232	*/
	233	enum {
b06b8511 CS	234	LXC_AUTO_PROC_RW = 0x001, /* /proc read-write */
	235	LXC_AUTO_PROC_MIXED = 0x002, /* /proc/sys and /proc/sysrq-trigger read-only */
	236	LXC_AUTO_PROC_MASK = 0x003,
	237
	238	LXC_AUTO_SYS_RW = 0x004, /* /sys */
	239	LXC_AUTO_SYS_RO = 0x008, /* /sys read-only */
f24a52d5	240	LXC_AUTO_SYS_MIXED = 0x00C, /* /sys read-only and /sys/class/net read-write */
b06b8511 CS	241	LXC_AUTO_SYS_MASK = 0x00C,
	242
	243	LXC_AUTO_CGROUP_RO = 0x010, /* /sys/fs/cgroup (partial mount, read-only) */
	244	LXC_AUTO_CGROUP_RW = 0x020, /* /sys/fs/cgroup (partial mount, read-write) */
	245	LXC_AUTO_CGROUP_MIXED = 0x030, /* /sys/fs/cgroup (partial mount, paths r/o, cgroup r/w) */
	246	LXC_AUTO_CGROUP_FULL_RO = 0x040, /* /sys/fs/cgroup (full mount, read-only) */
	247	LXC_AUTO_CGROUP_FULL_RW = 0x050, /* /sys/fs/cgroup (full mount, read-write) */
	248	LXC_AUTO_CGROUP_FULL_MIXED = 0x060, /* /sys/fs/cgroup (full mount, parent r/o, own r/w) */
0769b82a CS	249	/* These are defined in such a way as to retain
	250	* binary compatibility with earlier versions of
	251	* this code. If the previous mask is applied,
	252	* both of these will default back to the _MIXED
	253	* variants, which is safe. */
	254	LXC_AUTO_CGROUP_NOSPEC = 0x0B0, /* /sys/fs/cgroup (partial mount, r/w or mixed, depending on caps) */
	255	LXC_AUTO_CGROUP_FULL_NOSPEC = 0x0E0, /* /sys/fs/cgroup (full mount, r/w or mixed, depending on caps) */
	256	LXC_AUTO_CGROUP_MASK = 0x0F0,
b06b8511	257
0769b82a	258	LXC_AUTO_ALL_MASK = 0x0FF, /* all known settings */
368bbc02 CS	259	};
368bbc02 CS	260
571e6ec8 DL	261	/*
571e6ec8 DL	262	* Defines the global container configuration
63376d7d DL	263	* @rootfs : root directory to run the container
	264	* @pivotdir : pivotdir path, if not set default will be used
	265	* @mount : list of mount points
	266	* @tty : numbers of tty
	267	* @pts : new pts instance
	268	* @mount_list : list of mount point (alternative to fstab file)
	269	* @network : network configuration
	270	* @utsname : container utsname
	271	* @fstab : path to a fstab file format
1fb86a7c SH	272	* @caps : list of the capabilities to drop
1fb86a7c SH	273	* @keepcaps : list of the capabilities to keep
63376d7d DL	274	* @tty_info : tty data
63376d7d DL	275	* @console : console data
7c6ef2a2	276	* @ttydir : directory (under /dev) in which to create console and ttys
fe4de9a6 DE	277	* @lsm_aa_profile : apparmor profile to switch to or NULL
fe4de9a6 DE	278	* @lsm_se_context : selinux type to switch to or NULL
571e6ec8	279	*/
26ddeedd	280	enum lxchooks {
f7bee6c6	281	LXCHOOK_PRESTART, LXCHOOK_PREMOUNT, LXCHOOK_MOUNT, LXCHOOK_AUTODEV,
37cf711b SY	282	LXCHOOK_START, LXCHOOK_POSTSTOP, LXCHOOK_CLONE, LXCHOOK_DESTROY,
37cf711b SY	283	NUM_LXC_HOOKS};
72d0e1cb SG	284	extern char *lxchook_names[NUM_LXC_HOOKS];
72d0e1cb SG	285
7b35f3d6 SH	286	struct saved_nic {
	287	int ifindex;
	288	char *orig_name;
	289	};
	290
571e6ec8	291	struct lxc_conf {
37903589	292	int is_execute;
571e6ec8 DL	293	char *fstab;
	294	int tty;
	295	int pts;
91480a0f	296	int reboot;
828695d9	297	int need_utmp_watch;
9b8e3c96	298	signed long personality;
571e6ec8 DL	299	struct utsname *utsname;
571e6ec8 DL	300	struct lxc_list cgroup;
f6d3e3e4	301	struct lxc_list id_map;
5f4535a3	302	struct lxc_list network;
7b35f3d6 SH	303	struct saved_nic *saved_nics;
7b35f3d6 SH	304	int num_savednics;
368bbc02	305	int auto_mounts;
e7938e9e	306	struct lxc_list mount_list;
81810dd1	307	struct lxc_list caps;
1fb86a7c	308	struct lxc_list keepcaps;
571e6ec8	309	struct lxc_tty_info tty_info;
393903d1	310	char *pty_names; // comma-separated list of lxc.tty pty names
63376d7d	311	struct lxc_console console;
33fcb7a0	312	struct lxc_rootfs rootfs;
7c6ef2a2	313	char *ttydir;
b119f362	314	int close_all_fds;
26ddeedd	315	struct lxc_list hooks[NUM_LXC_HOOKS];
4a85ce2a	316
fe4de9a6	317	char *lsm_aa_profile;
7aff4f43	318	int lsm_aa_allow_incomplete;
fe4de9a6	319	char *lsm_se_context;
5112cd70	320	int tmp_umount_proc;
8f2c3a70	321	char *seccomp; // filename with the seccomp rules
769872f9	322	#if HAVE_SCMP_FILTER_CTX
d58c6ad0	323	scmp_filter_ctx seccomp_ctx;
769872f9	324	#endif
72d0e1cb	325	int maincmd_fd;
c6883f38	326	int autodev; // if 1, mount and fill a /dev at start
f0f1d8c0	327	int haltsignal; // signal used to halt container
dd267776	328	int rebootsignal; // signal used to reboot container
f0f1d8c0	329	int stopsignal; // signal used to hard stop container
7e0e1d94	330	int kmsg; // if 1, create /dev/kmsg symlink
f7bee6c6	331	char *rcfile; // Copy of the top level rcfile we read
b40a606e SH	332
	333	// Logfile and logleve can be set in a container config file.
	334	// Those function as defaults. The defaults can be overriden
	335	// by command line. However we don't want the command line
	336	// specified values to be saved on c->save_config(). So we
	337	// store the config file specified values here.
	338	char *logfile; // the logfile as specifed in config
	339	int loglevel; // loglevel as specifed in config (if any)
858377e4	340	int logfd;
9f30a190 MM	341
9f30a190 MM	342	int inherit_ns_fd[LXC_NS_MAX];
ee1e7aa0 SG	343
	344	int start_auto;
	345	int start_delay;
	346	int start_order;
	347	struct lxc_list groups;
76a26f55	348	int nbd_idx;
35120d9c SH	349
	350	/* set to true when rootfs has been setup */
	351	bool rootfs_setup;
f979ac15 SH	352
	353	/* list of included files */
	354	struct lxc_list includes;
4184c3e1 SH	355	/* config entries which are not "lxc." are aliens /
4184c3e1 SH	356	struct lxc_list aliens;
7c661726 MP	357
	358	/* list of environment variables we'll add to the container when
	359	* started */
	360	struct lxc_list environment;
6b0d5538 SH	361
	362	/* text representation of the config file */
	363	char *unexpanded_config;
	364	size_t unexpanded_len, unexpanded_alloced;
67c660d0 SG	365
	366	/* init command */
	367	char *init_cmd;
56f8ff00	368
fd9f399b PT	369	/* if running in a new user namespace, the UID/GID that COMMAND for
fd9f399b PT	370	* lxc-execute should run under */
c5cd20ce PT	371	uid_t init_uid;
c5cd20ce PT	372	gid_t init_gid;
571e6ec8 DL	373	};
571e6ec8 DL	374
858377e4 SH	375	#ifdef HAVE_TLS
	376	extern __thread struct lxc_conf *current_config;
	377	#else
	378	extern struct lxc_conf *current_config;
	379	#endif
	380
283678ed SH	381	int run_lxc_hooks(const char name, char hook, struct lxc_conf *conf,
283678ed SH	382	const char lxcpath, char argv[]);
26ddeedd	383
cc28d0b0 SH	384	extern int detect_shared_rootfs(void);
cc28d0b0 SH	385
089cd8b8 DL	386	/*
	387	* Initialize the lxc configuration structure
	388	*/
7b379ab3	389	extern struct lxc_conf *lxc_conf_init(void);
8eb5694b	390	extern void lxc_conf_free(struct lxc_conf *conf);
089cd8b8	391
0c547523 SH	392	extern int pin_rootfs(const char *rootfs);
0c547523 SH	393
26b797f3	394	extern int lxc_requests_empty_network(struct lxc_handler *handler);
e3b4c4c4	395	extern int lxc_create_network(struct lxc_handler *handler);
74a2b586	396	extern void lxc_delete_network(struct lxc_handler *handler);
82d5ae15	397	extern int lxc_assign_network(struct lxc_list *networks, pid_t pid);
f6d3e3e4	398	extern int lxc_map_ids(struct lxc_list *idmap, pid_t pid);
19a26f82	399	extern int lxc_find_gateway_addresses(struct lxc_handler *handler);
0ad19a3f	400
5e4a62bf	401	extern int lxc_create_tty(const char name, struct lxc_conf conf);
b0a33c1e	402	extern void lxc_delete_tty(struct lxc_tty_info *tty_info);
b0a33c1e	403
72d0e1cb	404	extern int lxc_clear_config_network(struct lxc_conf *c);
12a50cc6	405	extern int lxc_clear_nic(struct lxc_conf c, const char key);
72d0e1cb	406	extern int lxc_clear_config_caps(struct lxc_conf *c);
1fb86a7c	407	extern int lxc_clear_config_keepcaps(struct lxc_conf *c);
12a50cc6	408	extern int lxc_clear_cgroups(struct lxc_conf c, const char key);
72d0e1cb	409	extern int lxc_clear_mount_entries(struct lxc_conf *c);
b099e9e9	410	extern int lxc_clear_automounts(struct lxc_conf *c);
12a50cc6	411	extern int lxc_clear_hooks(struct lxc_conf c, const char key);
7d0eb87e	412	extern int lxc_clear_idmaps(struct lxc_conf *c);
ee1e7aa0	413	extern int lxc_clear_groups(struct lxc_conf *c);
ab799c0b	414	extern int lxc_clear_environment(struct lxc_conf *c);
f0d02950	415	extern int lxc_delete_autodev(struct lxc_handler *handler);
72d0e1cb	416
35120d9c SH	417	extern int do_rootfs_setup(struct lxc_conf conf, const char name,
	418	const char *lxcpath);
	419
0ad19a3f	420	/*
	421	* Configure the container from inside
	422	*/
88d5514d	423
368bbc02	424	struct cgroup_process_info;
d4ef7c50	425	extern int lxc_setup(struct lxc_handler *handler);
7b35f3d6	426
2af6bd1b	427	extern void lxc_rename_phys_nics_on_shutdown(int netnsfd, struct lxc_conf *conf);
cf3ef16d	428
2133f58c SH	429	extern int find_unmapped_nsuid(struct lxc_conf *conf, enum idtype idtype);
2133f58c SH	430	extern int mapped_hostid(unsigned id, struct lxc_conf *conf, enum idtype idtype);
c4d10a05 SH	431	extern int chown_mapped_root(char path, struct lxc_conf conf);
c4d10a05 SH	432	extern int ttys_shift_ids(struct lxc_conf *c);
4355ab5f	433	extern int userns_exec_1(struct lxc_conf conf, int (fn)(void ), void data);
a17b1e65 SG	434	extern int parse_mntopts(const char mntopts, unsigned long mntflags,
a17b1e65 SG	435	char **mntdata);
5112cd70	436	extern void tmp_proc_unmount(struct lxc_conf *lxc_conf);
6a0c909a	437	void remount_all_slave(void);
97e9cfa0	438	extern void suggest_default_idmap(void);
9fc7f8c0	439	FILE write_mount_file(struct lxc_list mount);
aaf26830	440	struct lxc_list sort_cgroup_settings(struct lxc_list cgroup_settings);
0ad19a3f	441	#endif