xnu-2422.100.13.tar.gz

[apple/xnu.git] / bsd / sys / ucred.h

diff --git a/bsd/sys/ucred.h b/bsd/sys/ucred.h
index 7da8c28ebd190be68abf9c702891bc9ea657139b..7dcd85e18d84901030a1875c4be0d2fda1f103d9 100644 (file)
--- a/bsd/sys/ucred.h
+++ b/bsd/sys/ucred.h
@@ -1,23 +1,29 @@
 /*
  * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * 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.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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 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_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /* Copyright (c) 1995, 1997 Apple Computer, Inc. All Rights Reserved */
 /*
@@ -54,6 +60,12 @@
  *
  *     @(#)ucred.h     8.4 (Berkeley) 1/9/95
  */
+/*
+ * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce
+ * support for mandatory and extensible security protections.  This notice
+ * is included in support of clause 2.2 (b) of the Apple Public License,
+ * Version 2.0.
+ */
 
 #ifndef _SYS_UCRED_H_
 #define        _SYS_UCRED_H_
@@ -63,19 +75,26 @@
 #include <sys/param.h>
 #include <bsm/audit.h>
 
+struct label;
+
 #ifdef __APPLE_API_UNSTABLE
+#include <sys/queue.h>
 
 /*
  * In-kernel credential structure.
  *
  * Note that this structure should not be used outside the kernel, nor should
- * it or copies of it be exported outside.  
+ * it or copies of it be exported outside.
  */
 struct ucred {
        TAILQ_ENTRY(ucred)      cr_link; /* never modify this without KAUTH_CRED_HASH_LOCK */
        u_long  cr_ref;                 /* reference count */
        
-       /* credential hash depends on everything from this point on (see kauth_cred_get_hashkey) */
+struct posix_cred {
+       /*
+        * The credential hash depends on everything from this point on
+        * (see kauth_cred_get_hashkey)
+        */
        uid_t   cr_uid;                 /* effective user id */
        uid_t   cr_ruid;                /* real user id */
        uid_t   cr_svuid;               /* saved user id */
@@ -83,10 +102,29 @@ struct ucred {
        gid_t   cr_groups[NGROUPS];     /* advisory group list */
        gid_t   cr_rgid;                /* real group id */
        gid_t   cr_svgid;               /* saved group id */
-       uid_t   cr_gmuid;               /* user id for group membership purposes */
-       struct auditinfo cr_au;         /* user auditing data */
+       uid_t   cr_gmuid;               /* UID for group membership purposes */
+       int     cr_flags;               /* flags on credential */
+} cr_posix;
+       struct label    *cr_label;      /* MAC label */
+       /* 
+        * NOTE: If anything else (besides the flags)
+        * added after the label, you must change
+        * kauth_cred_find().
+        */
+       struct au_session cr_audit;             /* user auditing data */
 };
+#ifndef _KAUTH_CRED_T
+#define        _KAUTH_CRED_T
 typedef struct ucred *kauth_cred_t;
+typedef struct posix_cred *posix_cred_t;
+#endif /* !_KAUTH_CRED_T */
+
+/*
+ * Credential flags that can be set on a credential
+ */
+#define CRF_NOMEMBERD  0x00000001      /* memberd opt out by setgroups() */
+#define CRF_MAC_ENFORCE 0x00000002     /* force entry through MAC Framework */
+                                       /* also forces credential cache miss */
 
 /*
  * This is the external representation of struct ucred.
@@ -103,6 +141,8 @@ struct xucred {
 #define NOCRED ((kauth_cred_t )0)      /* no credential available */
 #define FSCRED ((kauth_cred_t )-1)     /* filesystem credential */
 
+#define IS_VALID_CRED(_cr)     ((_cr) != NOCRED && (_cr) != FSCRED)
+
 #ifdef KERNEL
 #ifdef __APPLE_API_OBSOLETE
 __BEGIN_DECLS