7176eb1b5e
MAC_BOOLEAN -> MAC_POLICY_BOOLEAN MAC_BOOLEAN_NOSLEEP -> MAC_POLICY_BOOLEANN_NOSLEEP MAC_CHECK -> MAC_POLICY_CHECK MAC_CHECK_NOSLEEP -> MAC_POLICY_CHECK_NOSLEEP MAC_EXTERNALIZE -> MAC_POLICY_EXTERNALIZE MAC_GRANT -> MAC_POLICY_GRANT MAC_GRANT_NOSLEEP -> MAC_POLICY_GRANT_NOSLEEP MAC_INTERNALIZE -> MAC_POLICY_INTERNALIZE MAC_PERFORM -> MAC_POLICY_PERFORM_CHECK MAC_PERFORM_NOSLEEP -> MAC_POLICY_PERFORM_NOSLEEP This frees up those macro names for use in wrapping calls into the MAC Framework from the remainder of the kernel. Obtained from: TrustedBSD Project
261 lines
6.2 KiB
C
261 lines
6.2 KiB
C
/*-
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* Copyright (c) 2002-2003 Networks Associates Technology, Inc.
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* Copyright (c) 2006 SPARTA, Inc.
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* Copyright (c) 2009 Robert N. M. Watson
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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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* This software was enhanced by SPARTA ISSO under SPAWAR contract
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* N66001-04-C-6019 ("SEFOS").
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*
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* This software was developed at the University of Cambridge Computer
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* Laboratory with support from a grant from Google, Inc.
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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_kdtrace.h"
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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/sdt.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_POLICY_PERFORM(pipe_init_label, label);
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return (label);
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}
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void
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mac_pipe_init(struct pipepair *pp)
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{
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if (mac_labeled & MPC_OBJECT_PIPE)
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pp->pp_label = mac_pipe_label_alloc();
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else
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pp->pp_label = NULL;
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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_POLICY_PERFORM_NOSLEEP(pipe_destroy_label, label);
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mac_labelzone_free(label);
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}
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void
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mac_pipe_destroy(struct pipepair *pp)
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{
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if (pp->pp_label != NULL) {
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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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}
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void
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mac_pipe_copy_label(struct label *src, struct label *dest)
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{
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MAC_POLICY_PERFORM_NOSLEEP(pipe_copy_label, src, dest);
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}
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int
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mac_pipe_externalize_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_POLICY_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_pipe_internalize_label(struct label *label, char *string)
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{
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int error;
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MAC_POLICY_INTERNALIZE(pipe, label, string);
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return (error);
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}
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void
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mac_pipe_create(struct ucred *cred, struct pipepair *pp)
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{
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MAC_POLICY_PERFORM_NOSLEEP(pipe_create, cred, pp, pp->pp_label);
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}
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static void
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mac_pipe_relabel(struct ucred *cred, struct pipepair *pp,
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struct label *newlabel)
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{
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MAC_POLICY_PERFORM_NOSLEEP(pipe_relabel, cred, pp, pp->pp_label,
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newlabel);
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}
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MAC_CHECK_PROBE_DEFINE4(pipe_check_ioctl, "struct ucred *",
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"struct pipepair *", "unsigned long", "void *");
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int
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mac_pipe_check_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_POLICY_CHECK_NOSLEEP(pipe_check_ioctl, cred, pp, pp->pp_label,
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cmd, data);
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MAC_CHECK_PROBE4(pipe_check_ioctl, error, cred, pp, cmd, data);
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return (error);
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}
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MAC_CHECK_PROBE_DEFINE2(pipe_check_poll, "struct ucred *",
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"struct pipepair *");
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int
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mac_pipe_check_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_POLICY_CHECK_NOSLEEP(pipe_check_poll, cred, pp, pp->pp_label);
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MAC_CHECK_PROBE2(pipe_check_poll, error, cred, pp);
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return (error);
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}
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MAC_CHECK_PROBE_DEFINE2(pipe_check_read, "struct ucred *",
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"struct pipepair *");
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int
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mac_pipe_check_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_POLICY_CHECK_NOSLEEP(pipe_check_read, cred, pp, pp->pp_label);
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MAC_CHECK_PROBE2(pipe_check_read, error, cred, pp);
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return (error);
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}
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MAC_CHECK_PROBE_DEFINE3(pipe_check_relabel, "struct ucred *",
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"struct pipepair *", "struct label *");
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static int
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mac_pipe_check_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_POLICY_CHECK_NOSLEEP(pipe_check_relabel, cred, pp, pp->pp_label,
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newlabel);
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MAC_CHECK_PROBE3(pipe_check_relabel, error, cred, pp, newlabel);
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return (error);
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}
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MAC_CHECK_PROBE_DEFINE2(pipe_check_stat, "struct ucred *",
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"struct pipepair *");
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int
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mac_pipe_check_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_POLICY_CHECK_NOSLEEP(pipe_check_stat, cred, pp, pp->pp_label);
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MAC_CHECK_PROBE2(pipe_check_stat, error, cred, pp);
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return (error);
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}
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MAC_CHECK_PROBE_DEFINE2(pipe_check_write, "struct ucred *",
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"struct pipepair *");
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int
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mac_pipe_check_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_POLICY_CHECK_NOSLEEP(pipe_check_write, cred, pp, pp->pp_label);
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MAC_CHECK_PROBE2(pipe_check_write, error, cred, pp);
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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_pipe_check_relabel(cred, pp, label);
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if (error)
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return (error);
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mac_pipe_relabel(cred, pp, label);
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return (0);
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}
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