2 * Copyright (c) 2012-2013 The FreeBSD Foundation
5 * This software was developed by Pawel Jakub Dawidek under sponsorship from
6 * the FreeBSD Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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
32 #ifndef _LIBCAPSICUM_H_
33 #define _LIBCAPSICUM_H_
35 #ifndef _NVLIST_T_DECLARED
36 #define _NVLIST_T_DECLARED
39 typedef struct nvlist nvlist_t;
42 #ifndef _CAP_CHANNEL_T_DECLARED
43 #define _CAP_CHANNEL_T_DECLARED
46 typedef struct cap_channel cap_channel_t;
50 * The function opens unrestricted communication channel to Casper.
52 cap_channel_t *cap_init(void);
55 * The function creates cap_channel_t based on the given socket.
57 cap_channel_t *cap_wrap(int sock);
60 * The function returns communication socket and frees cap_channel_t.
62 int cap_unwrap(cap_channel_t *chan);
65 * The function clones the given capability.
67 cap_channel_t *cap_clone(const cap_channel_t *chan);
70 * The function closes the given capability.
72 void cap_close(cap_channel_t *chan);
75 * The function returns socket descriptor associated with the given
76 * cap_channel_t for use with select(2)/kqueue(2)/etc.
78 int cap_sock(const cap_channel_t *chan);
81 * The function limits the given capability.
82 * It always destroys 'limits' on return.
84 int cap_limit_set(const cap_channel_t *chan, nvlist_t *limits);
87 * The function returns current limits of the given capability.
89 int cap_limit_get(const cap_channel_t *chan, nvlist_t **limitsp);
93 * The function registers a service within provided Casper's capability.
94 * It will run with the same privileges the process has at the time of
95 * calling this function.
97 int cap_service_register(cap_channel_t *chan, const char *name,
102 * Function sends nvlist over the given capability.
104 int cap_send_nvlist(const cap_channel_t *chan, const nvlist_t *nvl);
106 * Function receives nvlist over the given capability.
108 nvlist_t *cap_recv_nvlist(const cap_channel_t *chan);
110 * Function sends the given nvlist, destroys it and receives new nvlist in
111 * response over the given capability.
113 nvlist_t *cap_xfer_nvlist(const cap_channel_t *chan, nvlist_t *nvl);
115 #endif /* !_LIBCAPSICUM_H_ */