xnu-7195.101.1.tar.gz

[apple/xnu.git] / security / mac_system.c

diff --git a/security/mac_system.c b/security/mac_system.c
index 621d242449feaef3e7e879bcb9db64440188f518..9f2ccf759d01a0939d9c8fb74f414d5f92cd7b15 100644 (file)
--- a/security/mac_system.c
+++ b/security/mac_system.c
@@ -2,7 +2,7 @@
  * Copyright (c) 2007 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 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
  * 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


@@ -11,10 +11,10 @@
  * 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.
  * 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.
  * 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,
  * 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,


@@ -22,7 +22,7 @@
  * 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.
  * 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@
  */
 
  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 


@@ -74,26 +74,17 @@ mac_system_check_acct(kauth_cred_t cred, struct vnode *vp)
 {
        int error;
 
 {
        int error;
 

-       if (!mac_system_enforce)
-               return (0);
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_system_enforce) {
+               return 0;
+       }
+#endif

 
        MAC_CHECK(system_check_acct, cred, vp,
            vp != NULL ? vp->v_label : NULL);
 
 
        MAC_CHECK(system_check_acct, cred, vp,
            vp != NULL ? vp->v_label : NULL);
 

-       return (error);
-}
-
-int
-mac_system_check_chud(kauth_cred_t cred)
-{
-       int error;
-
-       if (!mac_system_enforce)
-               return (0);
-
-       MAC_CHECK(system_check_chud, cred);
-
-       return (error);
+       return error;

 }
 
 int
 }
 
 int


@@ -101,12 +92,16 @@ mac_system_check_host_priv(kauth_cred_t cred)
 {
        int error;
 
 {
        int error;
 

-       if (!mac_system_enforce)
-               return (0);
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_system_enforce) {
+               return 0;
+       }
+#endif

 
        MAC_CHECK(system_check_host_priv, cred);
 
 
        MAC_CHECK(system_check_host_priv, cred);
 

-       return (error);
+       return error;

 }
 
 int
 }
 
 int


@@ -114,12 +109,16 @@ mac_system_check_info(kauth_cred_t cred, const char *info_type)
 {
        int error;
 
 {
        int error;
 

-       if (!mac_system_enforce)
-               return (0);
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_system_enforce) {
+               return 0;
+       }
+#endif

 
        MAC_CHECK(system_check_info, cred, info_type);
 
 
        MAC_CHECK(system_check_info, cred, info_type);
 

-       return (error);
+       return error;

 }
 
 int
 }
 
 int


@@ -127,12 +126,16 @@ mac_system_check_nfsd(kauth_cred_t cred)
 {
        int error;
 
 {
        int error;
 

-       if (!mac_system_enforce)
-               return (0);
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_system_enforce) {
+               return 0;
+       }
+#endif

 
        MAC_CHECK(system_check_nfsd, cred);
 
 
        MAC_CHECK(system_check_nfsd, cred);
 

-       return (error);
+       return error;

 }
 
 int
 }
 
 int


@@ -140,25 +143,34 @@ mac_system_check_reboot(kauth_cred_t cred, int howto)
 {
        int error;
 
 {
        int error;
 

-       if (!mac_system_enforce)
-               return (0);
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_system_enforce) {
+               return 0;
+       }
+#endif

 
        MAC_CHECK(system_check_reboot, cred, howto);
 
 
        MAC_CHECK(system_check_reboot, cred, howto);
 

-       return (error);
+       return error;

 }
 
 }
 

+

 int
 mac_system_check_settime(kauth_cred_t cred)
 {
        int error;
 
 int
 mac_system_check_settime(kauth_cred_t cred)
 {
        int error;
 

-       if (!mac_system_enforce)
-               return (0);
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_system_enforce) {
+               return 0;
+       }
+#endif

 
        MAC_CHECK(system_check_settime, cred);
 
 
        MAC_CHECK(system_check_settime, cred);
 

-       return (error);
+       return error;

 }
 
 int
 }
 
 int


@@ -166,11 +178,15 @@ mac_system_check_swapon(kauth_cred_t cred, struct vnode *vp)
 {
        int error;
 
 {
        int error;
 

-       if (!mac_system_enforce)
-               return (0);
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_system_enforce) {
+               return 0;
+       }
+#endif

 
        MAC_CHECK(system_check_swapon, cred, vp, vp->v_label);
 
        MAC_CHECK(system_check_swapon, cred, vp, vp->v_label);

-       return (error);
+       return error;

 }
 
 int
 }
 
 int


@@ -178,32 +194,35 @@ mac_system_check_swapoff(kauth_cred_t cred, struct vnode *vp)
 {
        int error;
 
 {
        int error;
 

-
-
-       if (!mac_system_enforce)
-               return (0);
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_system_enforce) {
+               return 0;
+       }
+#endif

 
        MAC_CHECK(system_check_swapoff, cred, vp, vp->v_label);
 
        MAC_CHECK(system_check_swapoff, cred, vp, vp->v_label);

-       return (error);
+       return error;

 }
 
 int
 }
 
 int

-mac_system_check_sysctl(kauth_cred_t cred, int *name, u_int namelen,
-    user_addr_t old, user_addr_t oldlenp, int inkernel, user_addr_t new, size_t newlen)
+mac_system_check_sysctlbyname(kauth_cred_t cred, const char *namestring, int *name,
+    size_t namelen, user_addr_t oldctl, size_t oldlen,
+    user_addr_t newctl, size_t newlen)

 {
        int error;
 
 {
        int error;
 

-       /*
-        * XXXMAC: We're very much like to assert the SYSCTL_LOCK here,
-        * but since it's not exported from kern_sysctl.c, we can't.
-        */
-       if (!mac_system_enforce)
-               return (0);
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_system_enforce) {
+               return 0;
+       }
+#endif

 
 

-       MAC_CHECK(system_check_sysctl, cred, name, namelen, old, oldlenp,
-           inkernel, new, newlen);
+       MAC_CHECK(system_check_sysctlbyname, cred, namestring,
+           name, namelen, oldctl, oldlen, newctl, newlen);

 
 

-       return (error);
+       return error;

 }
 
 int
 }
 
 int


@@ -211,10 +230,14 @@ mac_system_check_kas_info(kauth_cred_t cred, int selector)
 {
        int error;
 
 {
        int error;
 

-       if (!mac_system_enforce)
-               return (0);
+#if SECURITY_MAC_CHECK_ENFORCE
+       /* 21167099 - only check if we allow write */
+       if (!mac_system_enforce) {
+               return 0;
+       }
+#endif

 
        MAC_CHECK(system_check_kas_info, cred, selector);
 
 
        MAC_CHECK(system_check_kas_info, cred, selector);
 

-       return (error);
+       return error;

 }
 }