/*-
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
* ----------------------------------------------------------------------------
*
* $FreeBSD$
*
*/
#ifndef _SYS_JAIL_H_
#define _SYS_JAIL_H_
struct jail {
u_int32_t version;
char *path;
char *hostname;
u_int32_t ip_number;
};
struct xprison {
int pr_version;
int pr_id;
char pr_path[MAXPATHLEN];
char pr_host[MAXHOSTNAMELEN];
u_int32_t pr_ip;
};
#define XPRISON_VERSION 1
#ifndef _KERNEL
int jail(struct jail *);
int jail_attach(int);
#else /* _KERNEL */
#include <sys/queue.h>
#include <sys/_lock.h>
#include <sys/_mutex.h>
#include <sys/_task.h>
#define JAIL_MAX 999999
#ifdef MALLOC_DECLARE
MALLOC_DECLARE(M_PRISON);
#endif
#endif /* _KERNEL */
/*
* This structure describes a prison. It is pointed to by all struct
* ucreds's of the inmates. pr_ref keeps track of them and is used to
* delete the struture when the last inmate is dead.
*
* Lock key:
* (a) allprison_lock
* (p) locked by pr_mtx
* (c) set only during creation before the structure is shared, no mutex
* required to read
* (d) set only during destruction of jail, no mutex needed
*/
#if defined(_KERNEL) || defined(_WANT_PRISON)
struct prison {
LIST_ENTRY(prison) pr_list; /* (a) all prisons */
int pr_id; /* (c) prison id */
int pr_ref; /* (p) refcount */
char pr_path[MAXPATHLEN]; /* (c) chroot path */
struct vnode *pr_root; /* (c) vnode to rdir */
char pr_host[MAXHOSTNAMELEN]; /* (p) jail hostname */
u_int32_t pr_ip; /* (c) ip addr host */
void *pr_linux; /* (p) linux abi */
int pr_securelevel; /* (p) securelevel */
struct task pr_task; /* (d) destroy task */
struct mtx pr_mtx;
void **pr_slots; /* (p) additional data */
};
#endif /* _KERNEL || _WANT_PRISON */
#ifdef _KERNEL
/*
* Sysctl-set variables that determine global jail policy
*
* XXX MIB entries will need to be protected by a mutex.
*/
extern int jail_set_hostname_allowed;
extern int jail_socket_unixiproute_only;
extern int jail_sysvipc_allowed;
extern int jail_getfsstat_jailrootonly;
extern int jail_allow_raw_sockets;
extern int jail_chflags_allowed;
LIST_HEAD(prisonlist, prison);
extern struct prisonlist allprison;
extern struct sx allprison_lock;
/*
* Kernel support functions for jail().
*/
struct ucred;
struct mount;
struct sockaddr;
struct statfs;
int jailed(struct ucred *cred);
void getcredhostname(struct ucred *cred, char *, size_t);
int prison_check(struct ucred *cred1, struct ucred *cred2);
int prison_canseemount(struct ucred *cred, struct mount *mp);
void prison_enforce_statfs(struct ucred *cred, struct mount *mp,
struct statfs *sp);
struct prison *prison_find(int prid);
void prison_free(struct prison *pr);
u_int32_t prison_getip(struct ucred *cred);
void prison_hold(struct prison *pr);
int prison_if(struct ucred *cred, struct sockaddr *sa);
int prison_ip(struct ucred *cred, int flag, u_int32_t *ip);
int prison_priv_check(struct ucred *cred, int priv);
void prison_remote_ip(struct ucred *cred, int flags, u_int32_t *ip);
/*
* Kernel jail services.
*/
struct prison_service;
typedef int (*prison_create_t)(struct prison_service *psrv, struct prison *pr);
typedef int (*prison_destroy_t)(struct prison_service *psrv, struct prison *pr);
struct prison_service *prison_service_register(const char *name,
prison_create_t create, prison_destroy_t destroy);
void prison_service_deregister(struct prison_service *psrv);
void prison_service_data_set(struct prison_service *psrv, struct prison *pr,
void *data);
void *prison_service_data_get(struct prison_service *psrv, struct prison *pr);
void *prison_service_data_del(struct prison_service *psrv, struct prison *pr);
#endif /* _KERNEL */
#endif /* !_SYS_JAIL_H_ */
