xref: /freebsd/lib/libcasper/services/cap_sysctl/cap_sysctl.h (revision 643ac419fafba89f5adda0e0ea75b538727453fb)
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  * $FreeBSD$
30  */
31 
32 #ifndef _CAP_SYSCTL_H_
33 #define	_CAP_SYSCTL_H_
34 
35 #ifdef HAVE_CASPER
36 #define	WITH_CASPER
37 #endif
38 
39 #include <sys/cdefs.h>
40 
41 #define	CAP_SYSCTL_READ		0x01
42 #define	CAP_SYSCTL_WRITE	0x02
43 #define	CAP_SYSCTL_RDWR		(CAP_SYSCTL_READ | CAP_SYSCTL_WRITE)
44 #define	CAP_SYSCTL_RECURSIVE	0x04
45 
46 struct cap_sysctl_limit;
47 typedef struct cap_sysctl_limit cap_sysctl_limit_t;
48 
49 #ifdef WITH_CASPER
50 
51 __BEGIN_DECLS
52 
53 int cap_sysctl(cap_channel_t *chan, const int *name, u_int namelen, void *oldp,
54     size_t *oldlenp, const void *newp, size_t newlen);
55 int cap_sysctlbyname(cap_channel_t *chan, const char *name, void *oldp,
56     size_t *oldlenp, const void *newp, size_t newlen);
57 int cap_sysctlnametomib(cap_channel_t *chan, const char *name, int *mibp,
58     size_t *sizep);
59 
60 cap_sysctl_limit_t *cap_sysctl_limit_init(cap_channel_t *);
61 cap_sysctl_limit_t *cap_sysctl_limit_name(cap_sysctl_limit_t *limit,
62     const char *name, int flags);
63 cap_sysctl_limit_t *cap_sysctl_limit_mib(cap_sysctl_limit_t *limit,
64     const int *mibp, u_int miblen, int flags);
65 int cap_sysctl_limit(cap_sysctl_limit_t *limit);
66 
67 __END_DECLS
68 
69 #else /* !WITH_CASPER */
70 static inline int
71 cap_sysctl(cap_channel_t *chan __unused, const int *name, u_int namelen,
72     void *oldp, size_t *oldlenp, const void *newp, size_t newlen)
73 {
74 
75 	return (sysctl(name, namelen, oldp, oldlenp, newp, newlen));
76 }
77 
78 static inline int
79 cap_sysctlbyname(cap_channel_t *chan __unused, const char *name,
80     void *oldp, size_t *oldlenp, const void *newp, size_t newlen)
81 {
82 
83 	return (sysctlbyname(name, oldp, oldlenp, newp, newlen));
84 }
85 
86 static inline int
87 cap_sysctlnametomib(cap_channel_t *chan __unused, const char *name, int *mibp,
88     size_t *sizep)
89 {
90 
91 	return (sysctlnametomib(name, mibp, sizep));
92 }
93 
94 static inline cap_sysctl_limit_t *
95 cap_sysctl_limit_init(cap_channel_t *limit __unused)
96 {
97 
98 	return (NULL);
99 }
100 
101 static inline cap_sysctl_limit_t *
102 cap_sysctl_limit_name(cap_sysctl_limit_t *limit __unused,
103     const char *name __unused, int flags __unused)
104 {
105 
106 	return (NULL);
107 }
108 
109 static inline cap_sysctl_limit_t *
110 cap_sysctl_limit_mib(cap_sysctl_limit_t *limit __unused,
111     const int *mibp __unused, u_int miblen __unused,
112     int flags __unused)
113 {
114 
115 	return (NULL);
116 }
117 
118 static inline int
119 cap_sysctl_limit(cap_sysctl_limit_t *limit __unused)
120 {
121 
122 	return (0);
123 }
124 #endif /* WITH_CASPER */
125 
126 #endif /* !_CAP_SYSCTL_H_ */
127