219 lines
7.5 KiB
C
219 lines
7.5 KiB
C
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/*-
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* Copyright (c) 2010 James Gritton.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/jail.h>
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#include <sys/queue.h>
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#include <sys/time.h>
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#include <jail.h>
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#define CONF_FILE "/etc/jail.conf"
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#define DEP_FROM 0
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#define DEP_TO 1
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#define DF_SEEN 0x01 /* Dependency has been followed */
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#define DF_LIGHT 0x02 /* Implied dependency on jail existence only */
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#define DF_NOFAIL 0x04 /* Don't propigate failed jails */
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#define PF_VAR 0x01 /* This is a variable, not a true parameter */
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#define PF_APPEND 0x02 /* Append to existing parameter list */
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#define PF_BAD 0x04 /* Unable to resolve parameter value */
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#define PF_INTERNAL 0x08 /* Internal parameter, not passed to kernel */
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#define PF_BOOL 0x10 /* Boolean parameter */
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#define PF_INT 0x20 /* Integer parameter */
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#define JF_START 0x0001 /* -c */
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#define JF_SET 0x0002 /* -m */
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#define JF_STOP 0x0004 /* -r */
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#define JF_DEPEND 0x0008 /* Operation required by dependency */
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#define JF_WILD 0x0010 /* Not specified on the command line */
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#define JF_FAILED 0x0020 /* Operation failed */
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#define JF_CHECKINT 0x0040 /* Checked internal parameters */
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#define JF_IPPARAMS 0x0080 /* Looked up jail hostname for IP_HOSTNAME */
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#define JF_RDTUN 0x0100 /* Create-only parameter check has been done */
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#define JF_IFUP 0x0200 /* IP addresses have been configured */
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#define JF_MOUNTED 0x0400 /* Filesystems have been mounted */
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#define JF_PERSIST 0x0800 /* Jail is temporarily persistent */
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#define JF_TIMEOUT 0x1000 /* A command (or process kill) timed out */
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#define JF_RUNQ 0x2000 /* Jail was in the run qeueue */
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#define JF_BACKGROUND 0x4000 /* Command was run in the background */
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#define JF_OP_MASK (JF_START | JF_SET | JF_STOP)
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#define JF_RESTART (JF_START | JF_STOP)
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#define JF_START_SET (JF_START | JF_SET)
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#define JF_SET_RESTART (JF_SET | JF_STOP)
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#define JF_START_SET_RESTART (JF_START | JF_SET | JF_STOP)
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#define JF_DO_STOP(js) (((js) & (JF_SET | JF_STOP)) == JF_STOP)
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enum intparam {
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IP_ALLOW_DYING = 1, /* Allow making changes to a dying jail */
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IP_COMMAND, /* Command run inside jail at creation */
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IP_DEPEND, /* Jail starts after (stops before) another */
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IP_EXEC_CLEAN, /* Run commands in a clean environment */
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IP_EXEC_CONSOLELOG, /* Redirect optput for commands run in jail */
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IP_EXEC_FIB, /* Run jailed commands with this FIB */
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IP_EXEC_JAIL_USER, /* Run jailed commands as this user */
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IP_EXEC_POSTSTART, /* Commands run outside jail after creating */
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IP_EXEC_POSTSTOP, /* Commands run outside jail after removing */
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IP_EXEC_PRESTART, /* Commands run outside jail before creating */
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IP_EXEC_PRESTOP, /* Commands run outside jail before removing */
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IP_EXEC_START, /* Commands run inside jail on creation */
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IP_EXEC_STOP, /* Commands run inside jail on removal */
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IP_EXEC_SYSTEM_JAIL_USER,/* Get jail_user from system passwd file */
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IP_EXEC_SYSTEM_USER, /* Run non-jailed commands as this user */
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IP_EXEC_TIMEOUT, /* Time to wait for a command to complete */
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IP_INTERFACE, /* Add IP addresses to this interface */
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IP_IP_HOSTNAME, /* Get jail IP address(es) from hostname */
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IP_MOUNT, /* Mount points in fstab(5) form */
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IP_MOUNT_FSTAB, /* A standard fstab(5) file */
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IP_MOUNT_DEVFS, /* Mount /dev under prison root */
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IP_MOUNT_DEVFS_RULESET, /* Ruleset for the devfs mount */
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IP_STOP_TIMEOUT, /* Time to wait after sending SIGTERM */
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IP__IP4_IFADDR, /* Copy of ip4.addr with interface/netmask */
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#ifdef INET6
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IP__IP6_IFADDR, /* Copy of ip6.addr with interface/prefixlen */
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#endif
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IP_VNET_INTERFACE, /* Assign interface(s) to vnet jail */
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KP_HOSTNAME,
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KP_IP4_ADDR,
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#ifdef INET6
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KP_IP6_ADDR,
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#endif
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KP_JID,
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KP_NAME,
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KP_PATH,
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KP_PERSIST,
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KP_VNET,
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IP_NPARAM
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};
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STAILQ_HEAD(cfvars, cfvar);
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struct cfvar {
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STAILQ_ENTRY(cfvar) tq;
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char *name;
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size_t pos;
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};
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STAILQ_HEAD(cfstrings, cfstring);
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struct cfstring {
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STAILQ_ENTRY(cfstring) tq;
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char *s;
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size_t len;
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struct cfvars vars;
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};
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TAILQ_HEAD(cfparams, cfparam);
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struct cfparam {
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TAILQ_ENTRY(cfparam) tq;
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char *name;
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struct cfstrings val;
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unsigned flags;
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int gen;
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};
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TAILQ_HEAD(cfjails, cfjail);
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STAILQ_HEAD(cfdepends, cfdepend);
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struct cfjail {
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TAILQ_ENTRY(cfjail) tq;
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char *name;
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char *comline;
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struct cfparams params;
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struct cfdepends dep[2];
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struct cfjails *queue;
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struct cfparam *intparams[IP_NPARAM];
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struct cfstring *comstring;
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struct jailparam *jp;
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struct timespec timeout;
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enum intparam comparam;
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unsigned flags;
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int jid;
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int seq;
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int pstatus;
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int ndeps;
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int njp;
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int nprocs;
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};
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struct cfdepend {
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STAILQ_ENTRY(cfdepend) tq[2];
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struct cfjail *j[2];
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unsigned flags;
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};
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extern void *emalloc(size_t);
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extern void *erealloc(void *, size_t);
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extern char *estrdup(const char *);
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extern void failed(struct cfjail *j);
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extern void jail_note(const struct cfjail *j, const char *fmt, ...);
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extern void jail_warnx(const struct cfjail *j, const char *fmt, ...);
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extern int run_command(struct cfjail *j, int *plimit, enum intparam comparam);
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extern int finish_command(struct cfjail *j, int *plimit);
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extern struct cfjail *next_proc(int nonblock);
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extern int term_procs(struct cfjail *j);
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extern void load_config(void);
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extern struct cfjail *add_jail(void);
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extern void add_param(struct cfjail *j, const struct cfparam *p,
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const char *name, const char *value);
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extern void find_intparams(void);
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extern int check_intparams(struct cfjail *j);
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extern int bool_param(const struct cfparam *p);
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extern int int_param(const struct cfparam *p, int *ip);
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extern const char *string_param(const struct cfparam *p);
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extern int ip_params(struct cfjail *j);
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extern int import_params(struct cfjail *j);
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extern int equalopts(const char *opt1, const char *opt2);
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extern int wild_jail_name(const char *wname);
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extern int wild_jail_match(const char *jname, const char *wname);
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extern void dep_setup(int docf);
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extern int dep_check(struct cfjail *j);
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extern void dep_done(struct cfjail *j, unsigned flags);
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extern void dep_reset(struct cfjail *j);
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extern struct cfjail *next_jail(void);
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extern int start_state(const char *target, unsigned state, int running);
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extern void requeue(struct cfjail *j, struct cfjails *queue);
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extern void yyerror(const char *);
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extern int yylex(void);
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extern int yyparse(void);
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extern struct cfjails cfjails;
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extern struct cfjails ready;
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extern struct cfjails waiting;
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extern const char *cfname;
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extern int verbose;
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