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1608c46ea4
These complement cap_sysctlbyname(3) to provide a drop-in replacement for the corresponding libc functions. Also revise the libcap_sysctl limit interface to provide access to sysctls by MIB, and to avoid direct manipulation of nvlists by the caller. Reviewed by: oshogbo Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D17854
75 lines
3.1 KiB
C
75 lines
3.1 KiB
C
/*-
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* Copyright (c) 2013 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Pawel Jakub Dawidek under sponsorship from
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* the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _CAP_SYSCTL_H_
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#define _CAP_SYSCTL_H_
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#ifdef HAVE_CASPER
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#define WITH_CASPER
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#endif
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#ifdef WITH_CASPER
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#define CAP_SYSCTL_READ 0x01
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#define CAP_SYSCTL_WRITE 0x02
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#define CAP_SYSCTL_RDWR (CAP_SYSCTL_READ | CAP_SYSCTL_WRITE)
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#define CAP_SYSCTL_RECURSIVE 0x04
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int cap_sysctl(cap_channel_t *chan, const int *name, u_int namelen, void *oldp,
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size_t *oldlenp, const void *newp, size_t newlen);
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int cap_sysctlbyname(cap_channel_t *chan, const char *name, void *oldp,
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size_t *oldlenp, const void *newp, size_t newlen);
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int cap_sysctlnametomib(cap_channel_t *chan, const char *name, int *mibp,
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size_t *sizep);
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struct cap_sysctl_limit;
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typedef struct cap_sysctl_limit cap_sysctl_limit_t;
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cap_sysctl_limit_t *cap_sysctl_limit_init(cap_channel_t *);
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cap_sysctl_limit_t *cap_sysctl_limit_name(cap_sysctl_limit_t *limit,
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const char *name, int flags);
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cap_sysctl_limit_t *cap_sysctl_limit_mib(cap_sysctl_limit_t *limit, int *mibp,
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u_int miblen, int flags);
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int cap_sysctl_limit(cap_sysctl_limit_t *limit);
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#else /* !WITH_CASPER */
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#define cap_sysctl(chan, name, namelen, oldp, oldlenp, newp, newlen) \
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sysctl((name), (namelen), (oldp), (oldlenp), (newp), (newlen))
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#define cap_sysctlbyname(chan, name, oldp, oldlenp, newp, newlen) \
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sysctlbyname((name), (oldp), (oldlenp), (newp), (newlen))
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#define cap_sysctlnametomib(chan, name, mibp, sizep) \
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sysctlnametomib((name), (mibp), (sizep))
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#define cap_sysctl_limit_init(chan) (NULL)
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#define cap_sysctl_limit_name(limit, name, flags) (NULL)
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#define cap_sysctl_limit_mib(limit, mibp, miblen, flags) (NULL)
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#define cap_sysctl_limit(limit) (0)
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#endif /* WITH_CASPER */
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#endif /* !_CAP_SYSCTL_H_ */
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