1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
/*-
* Copyright (c) 2010 James Gritton.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/jail.h>
#include <sys/queue.h>
#include <sys/time.h>
#include <jail.h>
#define CONF_FILE "/etc/jail.conf"
#define DEP_FROM 0
#define DEP_TO 1
#define DF_SEEN 0x01 /* Dependency has been followed */
#define DF_LIGHT 0x02 /* Implied dependency on jail existence only */
#define DF_NOFAIL 0x04 /* Don't propigate failed jails */
#define PF_VAR 0x01 /* This is a variable, not a true parameter */
#define PF_APPEND 0x02 /* Append to existing parameter list */
#define PF_BAD 0x04 /* Unable to resolve parameter value */
#define PF_INTERNAL 0x08 /* Internal parameter, not passed to kernel */
#define PF_BOOL 0x10 /* Boolean parameter */
#define PF_INT 0x20 /* Integer parameter */
#define PF_CONV 0x40 /* Parameter duplicated in converted form */
#define JF_START 0x0001 /* -c */
#define JF_SET 0x0002 /* -m */
#define JF_STOP 0x0004 /* -r */
#define JF_DEPEND 0x0008 /* Operation required by dependency */
#define JF_WILD 0x0010 /* Not specified on the command line */
#define JF_FAILED 0x0020 /* Operation failed */
#define JF_PARAMS 0x0040 /* Parameters checked and imported */
#define JF_RDTUN 0x0080 /* Create-only parameter check has been done */
#define JF_PERSIST 0x0100 /* Jail is temporarily persistent */
#define JF_TIMEOUT 0x0200 /* A command (or process kill) timed out */
#define JF_SLEEPQ 0x0400 /* Waiting on a command and/or timeout */
#define JF_OP_MASK (JF_START | JF_SET | JF_STOP)
#define JF_RESTART (JF_START | JF_STOP)
#define JF_START_SET (JF_START | JF_SET)
#define JF_SET_RESTART (JF_SET | JF_STOP)
#define JF_START_SET_RESTART (JF_START | JF_SET | JF_STOP)
#define JF_DO_STOP(js) (((js) & (JF_SET | JF_STOP)) == JF_STOP)
enum intparam {
IP_ALLOW_DYING = 1, /* Allow making changes to a dying jail */
IP_COMMAND, /* Command run inside jail at creation */
IP_DEPEND, /* Jail starts after (stops before) another */
IP_EXEC_CLEAN, /* Run commands in a clean environment */
IP_EXEC_CONSOLELOG, /* Redirect optput for commands run in jail */
IP_EXEC_FIB, /* Run jailed commands with this FIB */
IP_EXEC_JAIL_USER, /* Run jailed commands as this user */
IP_EXEC_POSTSTART, /* Commands run outside jail after creating */
IP_EXEC_POSTSTOP, /* Commands run outside jail after removing */
IP_EXEC_PRESTART, /* Commands run outside jail before creating */
IP_EXEC_PRESTOP, /* Commands run outside jail before removing */
IP_EXEC_START, /* Commands run inside jail on creation */
IP_EXEC_STOP, /* Commands run inside jail on removal */
IP_EXEC_SYSTEM_JAIL_USER,/* Get jail_user from system passwd file */
IP_EXEC_SYSTEM_USER, /* Run non-jailed commands as this user */
IP_EXEC_TIMEOUT, /* Time to wait for a command to complete */
IP_INTERFACE, /* Add IP addresses to this interface */
IP_IP_HOSTNAME, /* Get jail IP address(es) from hostname */
IP_MOUNT, /* Mount points in fstab(5) form */
IP_MOUNT_DEVFS, /* Mount /dev under prison root */
IP_MOUNT_DEVFS_RULESET, /* Ruleset for the devfs mount */
IP_MOUNT_FSTAB, /* A standard fstab(5) file */
IP_STOP_TIMEOUT, /* Time to wait after sending SIGTERM */
IP_VNET_INTERFACE, /* Assign interface(s) to vnet jail */
IP__IP4_IFADDR, /* Copy of ip4.addr with interface/netmask */
#ifdef INET6
IP__IP6_IFADDR, /* Copy of ip6.addr with interface/prefixlen */
#endif
IP__MOUNT_FROM_FSTAB, /* Line from mount.fstab file */
IP__OP, /* Placeholder for requested operation */
KP_ALLOW_CHFLAGS,
KP_ALLOW_MOUNT,
KP_ALLOW_RAW_SOCKETS,
KP_ALLOW_SET_HOSTNAME,
KP_ALLOW_SOCKET_AF,
KP_ALLOW_SYSVIPC,
KP_ENFORCE_STATFS,
KP_HOST_HOSTNAME,
KP_IP4_ADDR,
#ifdef INET6
KP_IP6_ADDR,
#endif
KP_JID,
KP_NAME,
KP_PATH,
KP_PERSIST,
KP_SECURELEVEL,
KP_VNET,
IP_NPARAM
};
STAILQ_HEAD(cfvars, cfvar);
struct cfvar {
STAILQ_ENTRY(cfvar) tq;
char *name;
size_t pos;
};
TAILQ_HEAD(cfstrings, cfstring);
struct cfstring {
TAILQ_ENTRY(cfstring) tq;
char *s;
size_t len;
struct cfvars vars;
};
TAILQ_HEAD(cfparams, cfparam);
struct cfparam {
TAILQ_ENTRY(cfparam) tq;
char *name;
struct cfstrings val;
unsigned flags;
int gen;
};
TAILQ_HEAD(cfjails, cfjail);
STAILQ_HEAD(cfdepends, cfdepend);
struct cfjail {
TAILQ_ENTRY(cfjail) tq;
char *name;
char *comline;
struct cfparams params;
struct cfdepends dep[2];
struct cfjails *queue;
struct cfparam *intparams[IP_NPARAM];
struct cfstring *comstring;
struct jailparam *jp;
struct timespec timeout;
const enum intparam *comparam;
unsigned flags;
int jid;
int seq;
int pstatus;
int ndeps;
int njp;
int nprocs;
};
struct cfdepend {
STAILQ_ENTRY(cfdepend) tq[2];
struct cfjail *j[2];
unsigned flags;
};
extern void *emalloc(size_t);
extern void *erealloc(void *, size_t);
extern char *estrdup(const char *);
extern void failed(struct cfjail *j);
extern void jail_note(const struct cfjail *j, const char *fmt, ...);
extern void jail_warnx(const struct cfjail *j, const char *fmt, ...);
extern int next_command(struct cfjail *j);
extern int finish_command(struct cfjail *j);
extern struct cfjail *next_proc(int nonblock);
extern void load_config(void);
extern struct cfjail *add_jail(void);
extern void add_param(struct cfjail *j, const struct cfparam *p,
enum intparam ipnum, const char *value);
extern int bool_param(const struct cfparam *p);
extern int int_param(const struct cfparam *p, int *ip);
extern const char *string_param(const struct cfparam *p);
extern int check_intparams(struct cfjail *j);
extern int import_params(struct cfjail *j);
extern int equalopts(const char *opt1, const char *opt2);
extern int wild_jail_name(const char *wname);
extern int wild_jail_match(const char *jname, const char *wname);
extern void dep_setup(int docf);
extern int dep_check(struct cfjail *j);
extern void dep_done(struct cfjail *j, unsigned flags);
extern void dep_reset(struct cfjail *j);
extern struct cfjail *next_jail(void);
extern int start_state(const char *target, unsigned state, int running);
extern void requeue(struct cfjail *j, struct cfjails *queue);
extern void yyerror(const char *);
extern int yylex(void);
extern int yyparse(void);
extern struct cfjails cfjails;
extern struct cfjails ready;
extern struct cfjails depend;
extern const char *cfname;
extern int paralimit;
extern int verbose;
|