1 /*-
2  * Copyright (c) 2013 The FreeBSD Foundation
3  * All rights reserved.
4  *
5  * This software was developed by Pawel Jakub Dawidek under sponsorship from
6  * 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 AUTHORS 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 AUTHORS 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 
30 #ifndef _CAP_SYSCTL_H_
31 #define	_CAP_SYSCTL_H_
32 
33 #ifdef HAVE_CASPER
34 #define	WITH_CASPER
35 #endif
36 
37 #include <sys/cdefs.h>
38 
39 #define	CAP_SYSCTL_READ		0x01
40 #define	CAP_SYSCTL_WRITE	0x02
41 #define	CAP_SYSCTL_RDWR		(CAP_SYSCTL_READ | CAP_SYSCTL_WRITE)
42 #define	CAP_SYSCTL_RECURSIVE	0x04
43 
44 struct cap_sysctl_limit;
45 typedef struct cap_sysctl_limit cap_sysctl_limit_t;
46 
47 #ifdef WITH_CASPER
48 
49 __BEGIN_DECLS
50 
51 int cap_sysctl(cap_channel_t *chan, const int *name, u_int namelen, void *oldp,
52     size_t *oldlenp, const void *newp, size_t newlen);
53 int cap_sysctlbyname(cap_channel_t *chan, const char *name, void *oldp,
54     size_t *oldlenp, const void *newp, size_t newlen);
55 int cap_sysctlnametomib(cap_channel_t *chan, const char *name, int *mibp,
56     size_t *sizep);
57 
58 cap_sysctl_limit_t *cap_sysctl_limit_init(cap_channel_t *);
59 cap_sysctl_limit_t *cap_sysctl_limit_name(cap_sysctl_limit_t *limit,
60     const char *name, int flags);
61 cap_sysctl_limit_t *cap_sysctl_limit_mib(cap_sysctl_limit_t *limit,
62     const int *mibp, u_int miblen, int flags);
63 int cap_sysctl_limit(cap_sysctl_limit_t *limit);
64 
65 __END_DECLS
66 
67 #else /* !WITH_CASPER */
68 static inline int
69 cap_sysctl(cap_channel_t *chan __unused, const int *name, u_int namelen,
70     void *oldp, size_t *oldlenp, const void *newp, size_t newlen)
71 {
72 
73 	return (sysctl(name, namelen, oldp, oldlenp, newp, newlen));
74 }
75 
76 static inline int
77 cap_sysctlbyname(cap_channel_t *chan __unused, const char *name,
78     void *oldp, size_t *oldlenp, const void *newp, size_t newlen)
79 {
80 
81 	return (sysctlbyname(name, oldp, oldlenp, newp, newlen));
82 }
83 
84 static inline int
85 cap_sysctlnametomib(cap_channel_t *chan __unused, const char *name, int *mibp,
86     size_t *sizep)
87 {
88 
89 	return (sysctlnametomib(name, mibp, sizep));
90 }
91 
92 static inline cap_sysctl_limit_t *
93 cap_sysctl_limit_init(cap_channel_t *limit __unused)
94 {
95 
96 	return (NULL);
97 }
98 
99 static inline cap_sysctl_limit_t *
100 cap_sysctl_limit_name(cap_sysctl_limit_t *limit __unused,
101     const char *name __unused, int flags __unused)
102 {
103 
104 	return (NULL);
105 }
106 
107 static inline cap_sysctl_limit_t *
108 cap_sysctl_limit_mib(cap_sysctl_limit_t *limit __unused,
109     const int *mibp __unused, u_int miblen __unused,
110     int flags __unused)
111 {
112 
113 	return (NULL);
114 }
115 
116 static inline int
117 cap_sysctl_limit(cap_sysctl_limit_t *limit __unused)
118 {
119 
120 	return (0);
121 }
122 #endif /* WITH_CASPER */
123 
124 #endif /* !_CAP_SYSCTL_H_ */
125