xnu-4570.41.2.tar.gz

[apple/xnu.git] / bsd / kern / kern_xxx.c

diff --git a/bsd/kern/kern_xxx.c b/bsd/kern/kern_xxx.c
index 470a220e87c8bc21717cca2a910f559e29fbf5ff..c922c1641894ee97851121a48153fbb060e48531 100644 (file)
--- a/bsd/kern/kern_xxx.c
+++ b/bsd/kern/kern_xxx.c
@@ -1,23 +1,29 @@
 /*
- * Copyright (c) 2000-2003 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2009 Apple 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 NeXT Computer, Inc. All Rights Reserved */
 /*
@@ -54,8 +60,12 @@
  *
  *     @(#)kern_xxx.c  8.2 (Berkeley) 11/14/93
  */
-
-#include <cputypes.h> 
+/*
+ * 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.
+ */
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -67,32 +77,83 @@
 #include <sys/sysctl.h>
 #include <sys/buf.h>
 
-#include <bsm/audit_kernel.h>
+#include <security/audit/audit.h>
 
 #include <sys/mount_internal.h>
 #include <sys/sysproto.h>
+#if CONFIG_MACF
+#include <security/mac_framework.h>
+#endif
+
+int pshm_cache_purge_all(proc_t p);
+int psem_cache_purge_all(proc_t p);
 
 int
-reboot(struct proc *p, register struct reboot_args *uap, __unused register_t *retval)
+reboot(struct proc *p, struct reboot_args *uap, __unused int32_t *retval)
 {
-       char command[64];
-       int error;
-       int dummy=0;
+       char message[256];
+       int error=0;
+       size_t dummy=0;
+#if CONFIG_MACF
+       kauth_cred_t my_cred;
+#endif
 
        AUDIT_ARG(cmd, uap->opt);
 
-       command[0] = '\0';
+       message[0] = '\0';
+
+       if ((error = suser(kauth_cred_get(), &p->p_acflag))) {
+#if (DEVELOPMENT || DEBUG)
+               /* allow non-root user to call panic on dev/debug kernels */
+               if (!(uap->opt & RB_PANIC))
+                       return error;
+#else
+               return error;
+#endif
+       }
 
-       if ((error = suser(kauth_cred_get(), &p->p_acflag)))
-               return(error);  
-       
        if (uap->opt & RB_COMMAND)
-               error = copyinstr(uap->command,
-                                       (void *)command, sizeof(command), (size_t *)&dummy);
+                return ENOSYS;
+
+        if (uap->opt & RB_PANIC) {
+               error = copyinstr(uap->command, (void *)message, sizeof(message), (size_t *)&dummy);
+        }
+
+#if CONFIG_MACF
+#if (DEVELOPMENT || DEBUG)
+        if (uap->opt & RB_PANIC) {
+               /* on dev/debug kernels: allow anyone to call panic */
+               goto skip_cred_check;
+       }
+#endif
+       if (error)
+               return (error);
+       my_cred = kauth_cred_proc_ref(p);
+       error = mac_system_check_reboot(my_cred, uap->opt);
+       kauth_cred_unref(&my_cred);
+#if (DEVELOPMENT || DEBUG)
+skip_cred_check:
+#endif
+#endif
        if (!error) {
-               SET(p->p_flag, P_REBOOT);       /* No more signals for this proc */
-               boot(RB_BOOT, uap->opt, command);
+               OSBitOrAtomic(P_REBOOT, &p->p_flag);  /* No more signals for this proc */
+               error = reboot_kernel(uap->opt, message);
        }
        return(error);
 }
 
+int
+usrctl(struct proc *p, __unused struct usrctl_args *uap, __unused int32_t *retval)
+{
+       if (p != initproc) {
+               return EPERM;
+       }
+
+       int error = 0;
+       error = pshm_cache_purge_all(p);
+       if (error)
+               return error;
+
+       error = psem_cache_purge_all(p);
+       return error;
+}