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920325ee1d
SO_PEERLABEL. This provides an interface to query the label of a socket peer without embedding implementation details of mac_t in the application. Previously, sizeof(*mac_t) had to be specified by an application when performing getsockopt(). Document mac_get_peer(3), and expand documentation of the other mac_get(3) functions. Note that it's possible to get EINVAL back from mac_get_fd(3) when pointing it at an inappropriate object. NOTE: mac_get_fd() and mac_set_fd() support for sockets will follow shortly, so the documentation is slightly ahead of the code. Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
87 lines
2.5 KiB
C
87 lines
2.5 KiB
C
/*
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* Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
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* All rights reserved.
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*
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* This software was developed by Robert Watson for the TrustedBSD Project.
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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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* 3. The names of the authors may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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#include <sys/types.h>
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#include <sys/mac.h>
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#include <sys/socket.h>
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extern int __mac_get_fd(int fd, struct mac *mac_p);
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extern int __mac_get_file(const char *path_p, struct mac *mac_p);
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extern int __mac_get_link(const char *path_p, struct mac *mac_p);
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extern int __mac_get_pid(pid_t pid, struct mac *mac_p);
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extern int __mac_get_proc(struct mac *mac_p);
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int
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mac_get_fd(int fd, struct mac *label)
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{
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return (__mac_get_fd(fd, label));
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}
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int
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mac_get_file(const char *path, struct mac *label)
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{
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return (__mac_get_file(path, label));
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}
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int
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mac_get_link(const char *path, struct mac *label)
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{
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return (__mac_get_link(path, label));
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}
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int
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mac_get_peer(int fd, struct mac *label)
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{
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socklen_t len;
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len = sizeof(*label);
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return (getsockopt(fd, SOL_SOCKET, SO_PEERLABEL, label, &len));
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}
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int
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mac_get_pid(pid_t pid, struct mac *label)
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{
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return (__mac_get_pid(pid, label));
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}
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int
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mac_get_proc(struct mac *label)
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{
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return (__mac_get_proc(label));
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}
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