The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/security/mac/mac_audit.c

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    1 /*-
    2  * Copyright (c) 1999-2002, 2009 Robert N. M. Watson
    3  * Copyright (c) 2001 Ilmar S. Habibulin
    4  * Copyright (c) 2001-2004 Networks Associates Technology, Inc.
    5  * Copyright (c) 2006 SPARTA, Inc.
    6  *
    7  * This software was developed by Robert Watson and Ilmar Habibulin for the
    8  * TrustedBSD Project.
    9  *
   10  * This software was developed for the FreeBSD Project in part by Network
   11  * Associates Laboratories, the Security Research Division of Network
   12  * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
   13  * as part of the DARPA CHATS research program.
   14  *
   15  * This software was enhanced by SPARTA ISSO under SPAWAR contract
   16  * N66001-04-C-6019 ("SEFOS").
   17  *
   18  * This software was developed at the University of Cambridge Computer
   19  * Laboratory with support from a grant from Google, Inc. 
   20  *
   21  * Redistribution and use in source and binary forms, with or without
   22  * modification, are permitted provided that the following conditions
   23  * are met:
   24  * 1. Redistributions of source code must retain the above copyright
   25  *    notice, this list of conditions and the following disclaimer.
   26  * 2. Redistributions in binary form must reproduce the above copyright
   27  *    notice, this list of conditions and the following disclaimer in the
   28  *    documentation and/or other materials provided with the distribution.
   29  *
   30  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   31  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   32  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   33  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   34  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   35  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   36  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   37  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   38  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   39  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   40  * SUCH DAMAGE.
   41  */
   42 
   43 #include <sys/cdefs.h>
   44 __FBSDID("$FreeBSD: releng/9.0/sys/security/mac/mac_audit.c 191731 2009-05-01 21:05:40Z rwatson $");
   45 
   46 #include "opt_kdtrace.h"
   47 
   48 #include <sys/param.h>
   49 #include <sys/kernel.h>
   50 #include <sys/module.h>
   51 #include <sys/queue.h>
   52 #include <sys/sdt.h>
   53 #include <sys/vnode.h>
   54 
   55 #include <security/audit/audit.h>
   56 
   57 #include <security/mac/mac_framework.h>
   58 #include <security/mac/mac_internal.h>
   59 #include <security/mac/mac_policy.h>
   60 
   61 MAC_CHECK_PROBE_DEFINE2(cred_check_setaudit, "struct ucred *",
   62     "struct auditinfo *");
   63 
   64 int
   65 mac_cred_check_setaudit(struct ucred *cred, struct auditinfo *ai)
   66 {
   67         int error;
   68 
   69         MAC_POLICY_CHECK_NOSLEEP(cred_check_setaudit, cred, ai);
   70         MAC_CHECK_PROBE2(cred_check_setaudit, error, cred, ai);
   71 
   72         return (error);
   73 }
   74 
   75 MAC_CHECK_PROBE_DEFINE2(cred_check_setaudit_addr, "struct ucred *",
   76     "struct auditinfo_addr *");
   77 
   78 int
   79 mac_cred_check_setaudit_addr(struct ucred *cred, struct auditinfo_addr *aia)
   80 {
   81         int error;
   82 
   83         MAC_POLICY_CHECK_NOSLEEP(cred_check_setaudit_addr, cred, aia);
   84         MAC_CHECK_PROBE2(cred_check_setaudit_addr, error, cred, aia);
   85 
   86         return (error);
   87 }
   88 
   89 MAC_CHECK_PROBE_DEFINE2(cred_check_setauid, "struct ucred *", "uid_t");
   90 
   91 int
   92 mac_cred_check_setauid(struct ucred *cred, uid_t auid)
   93 {
   94         int error;
   95 
   96         MAC_POLICY_CHECK_NOSLEEP(cred_check_setauid, cred, auid);
   97         MAC_CHECK_PROBE2(cred_check_setauid, error, cred, auid);
   98 
   99         return (error);
  100 }
  101 
  102 MAC_CHECK_PROBE_DEFINE3(system_check_audit, "struct ucred *", "void *",
  103     "int");
  104 
  105 int
  106 mac_system_check_audit(struct ucred *cred, void *record, int length)
  107 {
  108         int error;
  109 
  110         MAC_POLICY_CHECK_NOSLEEP(system_check_audit, cred, record, length);
  111         MAC_CHECK_PROBE3(system_check_audit, error, cred, record, length);
  112 
  113         return (error);
  114 }
  115 
  116 MAC_CHECK_PROBE_DEFINE2(system_check_auditctl, "struct ucred *",
  117     "struct vnode *");
  118 
  119 int
  120 mac_system_check_auditctl(struct ucred *cred, struct vnode *vp)
  121 {
  122         int error;
  123         struct label *vl;
  124 
  125         ASSERT_VOP_LOCKED(vp, "mac_system_check_auditctl");
  126 
  127         vl = (vp != NULL) ? vp->v_label : NULL;
  128         MAC_POLICY_CHECK(system_check_auditctl, cred, vp, vl);
  129         MAC_CHECK_PROBE2(system_check_auditctl, error, cred, vp);
  130 
  131         return (error);
  132 }
  133 
  134 MAC_CHECK_PROBE_DEFINE2(system_check_auditon, "struct ucred *", "int");
  135 
  136 int
  137 mac_system_check_auditon(struct ucred *cred, int cmd)
  138 {
  139         int error;
  140 
  141         MAC_POLICY_CHECK_NOSLEEP(system_check_auditon, cred, cmd);
  142         MAC_CHECK_PROBE2(system_check_auditon, error, cred, cmd);
  143 
  144         return (error);
  145 }

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