FreeBSD/Linux Kernel Cross Reference
sys/sys/rctl.h
1 /*-
2 * Copyright (c) 2010 The FreeBSD Foundation
3 * All rights reserved.
4 *
5 * This software was developed by Edward Tomasz Napierala under sponsorship
6 * from the FreeBSD Foundation.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: releng/10.0/sys/sys/rctl.h 242139 2012-10-26 16:01:08Z trasz $
30 */
31
32 /*
33 * Resource Limits.
34 */
35
36 #ifndef _RCTL_H_
37 #define _RCTL_H_
38
39 #include <sys/cdefs.h>
40 #include <sys/queue.h>
41 #include <sys/types.h>
42 #include <sys/_task.h>
43
44 struct proc;
45 struct uidinfo;
46 struct loginclass;
47 struct prison_racct;
48 struct ucred;
49 struct rctl_rule_link;
50
51 #ifdef _KERNEL
52
53 /*
54 * Rules describe an action to be taken when conditions defined
55 * in the rule are met. There is no global list of rules; instead,
56 * rules are linked to by the racct structures for all the subjects
57 * they apply to - for example, a rule of type "user" is linked to the
58 * appropriate struct uidinfo, and to all the processes of that user.
59 *
60 * 'rr_refcount' is equal to the number of rctl_rule_link structures
61 * pointing to the rule.
62 *
63 * This structure must never change after being added, via rctl_rule_link
64 * structures, to subjects. In order to change a rule, add a new rule
65 * and remove the previous one.
66 */
67 struct rctl_rule {
68 int rr_subject_type;
69 union {
70 struct proc *rs_proc;
71 struct uidinfo *rs_uip;
72 struct loginclass *rs_loginclass;
73 struct prison_racct *rs_prison_racct;
74 } rr_subject;
75 int rr_per;
76 int rr_resource;
77 int rr_action;
78 int64_t rr_amount;
79 u_int rr_refcount;
80 struct task rr_task;
81 };
82
83 /*
84 * Allowed values for rr_subject_type and rr_per fields.
85 */
86 #define RCTL_SUBJECT_TYPE_UNDEFINED -1
87 #define RCTL_SUBJECT_TYPE_PROCESS 0x0000
88 #define RCTL_SUBJECT_TYPE_USER 0x0001
89 #define RCTL_SUBJECT_TYPE_LOGINCLASS 0x0003
90 #define RCTL_SUBJECT_TYPE_JAIL 0x0004
91 #define RCTL_SUBJECT_TYPE_MAX RCTL_SUBJECT_TYPE_JAIL
92
93 /*
94 * Allowed values for rr_action field.
95 */
96 #define RCTL_ACTION_UNDEFINED -1
97 #define RCTL_ACTION_SIGHUP SIGHUP
98 #define RCTL_ACTION_SIGINT SIGINT
99 #define RCTL_ACTION_SIGQUIT SIGQUIT
100 #define RCTL_ACTION_SIGILL SIGILL
101 #define RCTL_ACTION_SIGTRAP SIGTRAP
102 #define RCTL_ACTION_SIGABRT SIGABRT
103 #define RCTL_ACTION_SIGEMT SIGEMT
104 #define RCTL_ACTION_SIGFPE SIGFPE
105 #define RCTL_ACTION_SIGKILL SIGKILL
106 #define RCTL_ACTION_SIGBUS SIGBUS
107 #define RCTL_ACTION_SIGSEGV SIGSEGV
108 #define RCTL_ACTION_SIGSYS SIGSYS
109 #define RCTL_ACTION_SIGPIPE SIGPIPE
110 #define RCTL_ACTION_SIGALRM SIGALRM
111 #define RCTL_ACTION_SIGTERM SIGTERM
112 #define RCTL_ACTION_SIGURG SIGURG
113 #define RCTL_ACTION_SIGSTOP SIGSTOP
114 #define RCTL_ACTION_SIGTSTP SIGTSTP
115 #define RCTL_ACTION_SIGCHLD SIGCHLD
116 #define RCTL_ACTION_SIGTTIN SIGTTIN
117 #define RCTL_ACTION_SIGTTOU SIGTTOU
118 #define RCTL_ACTION_SIGIO SIGIO
119 #define RCTL_ACTION_SIGXCPU SIGXCPU
120 #define RCTL_ACTION_SIGXFSZ SIGXFSZ
121 #define RCTL_ACTION_SIGVTALRM SIGVTALRM
122 #define RCTL_ACTION_SIGPROF SIGPROF
123 #define RCTL_ACTION_SIGWINCH SIGWINCH
124 #define RCTL_ACTION_SIGINFO SIGINFO
125 #define RCTL_ACTION_SIGUSR1 SIGUSR1
126 #define RCTL_ACTION_SIGUSR2 SIGUSR2
127 #define RCTL_ACTION_SIGTHR SIGTHR
128 #define RCTL_ACTION_SIGNAL_MAX RCTL_ACTION_SIGTHR
129 #define RCTL_ACTION_DENY (RCTL_ACTION_SIGNAL_MAX + 1)
130 #define RCTL_ACTION_LOG (RCTL_ACTION_SIGNAL_MAX + 2)
131 #define RCTL_ACTION_DEVCTL (RCTL_ACTION_SIGNAL_MAX + 3)
132 #define RCTL_ACTION_MAX RCTL_ACTION_DEVCTL
133
134 #define RCTL_AMOUNT_UNDEFINED -1
135
136 struct rctl_rule *rctl_rule_alloc(int flags);
137 struct rctl_rule *rctl_rule_duplicate(const struct rctl_rule *rule, int flags);
138 void rctl_rule_acquire(struct rctl_rule *rule);
139 void rctl_rule_release(struct rctl_rule *rule);
140 int rctl_rule_add(struct rctl_rule *rule);
141 int rctl_rule_remove(struct rctl_rule *filter);
142 int rctl_enforce(struct proc *p, int resource, uint64_t amount);
143 int64_t rctl_pcpu_available(const struct proc *p);
144 uint64_t rctl_get_limit(struct proc *p, int resource);
145 uint64_t rctl_get_available(struct proc *p, int resource);
146 const char *rctl_resource_name(int resource);
147 void rctl_proc_ucred_changed(struct proc *p, struct ucred *newcred);
148 int rctl_proc_fork(struct proc *parent, struct proc *child);
149 void rctl_racct_release(struct racct *racct);
150 #else /* !_KERNEL */
151
152 /*
153 * Syscall interface.
154 */
155 __BEGIN_DECLS
156 int rctl_get_racct(const char *inbufp, size_t inbuflen, char *outbufp,
157 size_t outbuflen);
158 int rctl_get_rules(const char *inbufp, size_t inbuflen, char *outbufp,
159 size_t outbuflen);
160 int rctl_get_limits(const char *inbufp, size_t inbuflen, char *outbufp,
161 size_t outbuflen);
162 int rctl_add_rule(const char *inbufp, size_t inbuflen, char *outbufp,
163 size_t outbuflen);
164 int rctl_remove_rule(const char *inbufp, size_t inbuflen, char *outbufp,
165 size_t outbuflen);
166 __END_DECLS
167
168 #endif /* !_KERNEL */
169
170 #endif /* !_RCTL_H_ */
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