26ae2b86b6
variable name conventions for arguments passed into the framework -- for example, name network interfaces 'ifp', sockets 'so', mounts 'mp', mbufs 'm', processes 'p', etc, wherever possible. Previously there was significant variation in this regard. Normalize copyright lists to ranges where sensible.
219 lines
4.7 KiB
C
219 lines
4.7 KiB
C
/*-
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* Copyright (c) 2002-2003 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed for the FreeBSD Project in part by Network
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* Associates Laboratories, the Security Research Division of Network
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* Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
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* as part of the DARPA CHATS research program.
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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 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_mac.h"
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/sbuf.h>
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#include <sys/systm.h>
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#include <sys/vnode.h>
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#include <sys/pipe.h>
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#include <sys/sysctl.h>
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#include <security/mac/mac_framework.h>
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#include <security/mac/mac_internal.h>
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#include <security/mac/mac_policy.h>
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struct label *
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mac_pipe_label_alloc(void)
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{
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struct label *label;
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label = mac_labelzone_alloc(M_WAITOK);
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MAC_PERFORM(init_pipe_label, label);
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return (label);
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}
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void
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mac_init_pipe(struct pipepair *pp)
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{
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pp->pp_label = mac_pipe_label_alloc();
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}
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void
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mac_pipe_label_free(struct label *label)
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{
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MAC_PERFORM(destroy_pipe_label, label);
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mac_labelzone_free(label);
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}
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void
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mac_destroy_pipe(struct pipepair *pp)
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{
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mac_pipe_label_free(pp->pp_label);
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pp->pp_label = NULL;
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}
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void
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mac_copy_pipe_label(struct label *src, struct label *dest)
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{
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MAC_PERFORM(copy_pipe_label, src, dest);
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}
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int
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mac_externalize_pipe_label(struct label *label, char *elements,
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char *outbuf, size_t outbuflen)
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{
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int error;
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MAC_EXTERNALIZE(pipe, label, elements, outbuf, outbuflen);
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return (error);
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}
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int
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mac_internalize_pipe_label(struct label *label, char *string)
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{
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int error;
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MAC_INTERNALIZE(pipe, label, string);
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return (error);
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}
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void
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mac_create_pipe(struct ucred *cred, struct pipepair *pp)
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{
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MAC_PERFORM(create_pipe, cred, pp, pp->pp_label);
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}
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static void
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mac_relabel_pipe(struct ucred *cred, struct pipepair *pp,
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struct label *newlabel)
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{
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MAC_PERFORM(relabel_pipe, cred, pp, pp->pp_label, newlabel);
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}
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int
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mac_check_pipe_ioctl(struct ucred *cred, struct pipepair *pp,
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unsigned long cmd, void *data)
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{
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int error;
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mtx_assert(&pp->pp_mtx, MA_OWNED);
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MAC_CHECK(check_pipe_ioctl, cred, pp, pp->pp_label, cmd, data);
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return (error);
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}
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int
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mac_check_pipe_poll(struct ucred *cred, struct pipepair *pp)
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{
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int error;
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mtx_assert(&pp->pp_mtx, MA_OWNED);
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MAC_CHECK(check_pipe_poll, cred, pp, pp->pp_label);
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return (error);
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}
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int
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mac_check_pipe_read(struct ucred *cred, struct pipepair *pp)
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{
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int error;
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mtx_assert(&pp->pp_mtx, MA_OWNED);
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MAC_CHECK(check_pipe_read, cred, pp, pp->pp_label);
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return (error);
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}
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static int
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mac_check_pipe_relabel(struct ucred *cred, struct pipepair *pp,
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struct label *newlabel)
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{
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int error;
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mtx_assert(&pp->pp_mtx, MA_OWNED);
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MAC_CHECK(check_pipe_relabel, cred, pp, pp->pp_label, newlabel);
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return (error);
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}
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int
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mac_check_pipe_stat(struct ucred *cred, struct pipepair *pp)
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{
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int error;
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mtx_assert(&pp->pp_mtx, MA_OWNED);
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MAC_CHECK(check_pipe_stat, cred, pp, pp->pp_label);
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return (error);
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}
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int
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mac_check_pipe_write(struct ucred *cred, struct pipepair *pp)
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{
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int error;
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mtx_assert(&pp->pp_mtx, MA_OWNED);
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MAC_CHECK(check_pipe_write, cred, pp, pp->pp_label);
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return (error);
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}
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int
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mac_pipe_label_set(struct ucred *cred, struct pipepair *pp,
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struct label *label)
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{
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int error;
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mtx_assert(&pp->pp_mtx, MA_OWNED);
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error = mac_check_pipe_relabel(cred, pp, label);
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if (error)
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return (error);
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mac_relabel_pipe(cred, pp, label);
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return (0);
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}
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