X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/0c530ab8987f0ae6a1a3d9284f40182b88852816..2d21ac55c334faf3a56e5634905ed6987fc787d4:/security/mac_pipe.c diff --git a/security/mac_pipe.c b/security/mac_pipe.c new file mode 100644 index 000000000..fce1303ac --- /dev/null +++ b/security/mac_pipe.c @@ -0,0 +1,249 @@ +/* + * Copyright (c) 2007 Apple Inc. All rights reserved. + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ + * + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. + * + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, + * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ + */ +/*- + * Copyright (c) 2002, 2003 Networks Associates Technology, Inc. + * Copyright (c) 2005 SPARTA, Inc. + * All rights reserved. + * + * This software was developed for the FreeBSD Project in part by Network + * Associates Laboratories, the Security Research Division of Network + * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), + * as part of the DARPA CHATS research program. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + + +struct label * +mac_pipe_label_alloc(void) +{ + struct label *label; + + label = mac_labelzone_alloc(MAC_WAITOK); + if (label == NULL) + return (NULL); + MAC_PERFORM(pipe_label_init, label); + return (label); +} + +void +mac_pipe_label_init(struct pipe *cpipe) +{ + + cpipe->pipe_label = mac_pipe_label_alloc(); +} + +void +mac_pipe_label_free(struct label *label) +{ + + MAC_PERFORM(pipe_label_destroy, label); + mac_labelzone_free(label); +} + +void +mac_pipe_label_destroy(struct pipe *cpipe) +{ + + mac_pipe_label_free(cpipe->pipe_label); + cpipe->pipe_label = NULL; +} + +void +mac_pipe_label_copy(struct label *src, struct label *dest) +{ + + MAC_PERFORM(pipe_label_copy, src, dest); +} + +int +mac_pipe_label_externalize(struct label *label, char *elements, + char *outbuf, size_t outbuflen) +{ + int error; + + error = MAC_EXTERNALIZE(pipe, label, elements, outbuf, outbuflen); + + return (error); +} + +int +mac_pipe_label_internalize(struct label *label, char *string) +{ + int error; + + error = MAC_INTERNALIZE(pipe, label, string); + + return (error); +} + +void +mac_pipe_label_associate(kauth_cred_t cred, struct pipe *cpipe) +{ + + MAC_PERFORM(pipe_label_associate, cred, cpipe, cpipe->pipe_label); +} + +int +mac_pipe_check_kqfilter(kauth_cred_t cred, struct knote *kn, + struct pipe *cpipe) +{ + int error; + + if (!mac_pipe_enforce) + return (0); + + MAC_CHECK(pipe_check_kqfilter, cred, kn, cpipe, cpipe->pipe_label); + return (error); +} +int +mac_pipe_check_ioctl(kauth_cred_t cred, struct pipe *cpipe, u_int cmd) +{ + int error; + + if (!mac_pipe_enforce) + return (0); + + MAC_CHECK(pipe_check_ioctl, cred, cpipe, cpipe->pipe_label, cmd); + + return (error); +} + +int +mac_pipe_check_read(kauth_cred_t cred, struct pipe *cpipe) +{ + int error; + + if (!mac_pipe_enforce) + return (0); + + MAC_CHECK(pipe_check_read, cred, cpipe, cpipe->pipe_label); + + return (error); +} + +static int +mac_pipe_check_label_update(kauth_cred_t cred, struct pipe *cpipe, + struct label *newlabel) +{ + int error; + + if (!mac_pipe_enforce) + return (0); + + MAC_CHECK(pipe_check_label_update, cred, cpipe, cpipe->pipe_label, newlabel); + + return (error); +} + +int +mac_pipe_check_select(kauth_cred_t cred, struct pipe *cpipe, int which) +{ + int error; + + if (!mac_pipe_enforce) + return (0); + + MAC_CHECK(pipe_check_select, cred, cpipe, cpipe->pipe_label, which); + + return (error); +} + +int +mac_pipe_check_stat(kauth_cred_t cred, struct pipe *cpipe) +{ + int error; + + if (!mac_pipe_enforce) + return (0); + + MAC_CHECK(pipe_check_stat, cred, cpipe, cpipe->pipe_label); + + return (error); +} + +int +mac_pipe_check_write(kauth_cred_t cred, struct pipe *cpipe) +{ + int error; + + if (!mac_pipe_enforce) + return (0); + + MAC_CHECK(pipe_check_write, cred, cpipe, cpipe->pipe_label); + + return (error); +} + +int +mac_pipe_label_update(kauth_cred_t cred, struct pipe *cpipe, + struct label *label) +{ + int error; + + error = mac_pipe_check_label_update(cred, cpipe, label); + if (error) + return (error); + + MAC_PERFORM(pipe_label_update, cred, cpipe, cpipe->pipe_label, label); + + return (0); +}