xnu-517.7.7.tar.gz

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

diff --git a/bsd/kern/kern_sysctl.c b/bsd/kern/kern_sysctl.c
index 19eaed4ae69ddcf5c179ea30d798da15dc8a5e32..afff9561865a85abcf0edf26dae2a124c309a25b 100644 (file)
--- a/bsd/kern/kern_sysctl.c
+++ b/bsd/kern/kern_sysctl.c
@@ -1,24 +1,21 @@
 /*
- * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * 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. 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
+ * This 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.
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
  * 
  * @APPLE_LICENSE_HEADER_END@
  */
@@ -82,6 +79,9 @@
 #include <sys/sysctl.h>
 #include <sys/user.h>
 #include <sys/aio_kern.h>
+
+#include <bsm/audit_kernel.h>
+
 #include <mach/machine.h>
 #include <mach/mach_types.h>
 #include <mach/vm_param.h>
@@ -215,6 +215,8 @@ __sysctl(p, uap, retval)
            copyin(uap->name, &name, uap->namelen * sizeof(int)))
                return (error);
 
+       AUDIT_ARG(ctlname, name, uap->namelen);
+
        /* CTL_UNSPEC is used to get oid to AUTO_OID */
        if (uap->new != NULL
                && ((name[0] == CTL_KERN
@@ -328,6 +330,10 @@ extern int domainnamelen;
 extern char classichandler[32];
 extern long classichandler_fsid;
 extern long classichandler_fileid;
+__private_extern__ char corefilename[MAXPATHLEN+1];
+__private_extern__ do_coredump;
+__private_extern__ sugid_coredump;
+
 
 extern long hostid;
 #ifdef INSECURE
@@ -471,7 +477,7 @@ kern_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
        size_t newlen;
        struct proc *p;
 {
-       int error, level, inthostid;
+       int error, level, inthostid, tmp;
        unsigned int oldval=0;
        char *str;
        extern char ostype[], osrelease[], version[];
@@ -608,6 +614,26 @@ kern_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
                return( sysctl_aioprocmax( oldp, oldlenp, newp, newlen ) );
        case KERN_AIOTHREADS:
                return( sysctl_aiothreads( oldp, oldlenp, newp, newlen ) );
+       case KERN_COREFILE:
+               error = sysctl_string(oldp, oldlenp, newp, newlen,
+                   corefilename, sizeof(corefilename));
+               return (error);
+       case KERN_COREDUMP:
+               tmp = do_coredump;
+               error = sysctl_int(oldp, oldlenp, newp, newlen, &do_coredump);
+               if (!error && (do_coredump < 0) || (do_coredump > 1)) {
+                       do_coredump = tmp;
+                       error = EINVAL;
+               }
+               return (error);
+       case KERN_SUGID_COREDUMP:
+               tmp = sugid_coredump;
+               error = sysctl_int(oldp, oldlenp, newp, newlen, &sugid_coredump);
+               if (!error && (sugid_coredump < 0) || (sugid_coredump > 1)) {
+                       sugid_coredump = tmp;
+                       error = EINVAL;
+               }
+               return (error);
        default:
                return (EOPNOTSUPP);
        }
@@ -683,8 +709,10 @@ sysctl_int(oldp, oldlenp, newp, newlen, valp)
        *oldlenp = sizeof(int);
        if (oldp)
                error = copyout(valp, oldp, sizeof(int));
-       if (error == 0 && newp)
+       if (error == 0 && newp) {
                error = copyin(newp, valp, sizeof(int));
+               AUDIT_ARG(value, *valp);
+       }
        return (error);
 }
 
@@ -785,6 +813,7 @@ sysctl_string(oldp, oldlenp, newp, newlen, str, maxlen)
        if (error == 0 && newp) {
                error = copyin(newp, str, newlen);
                str[newlen] = 0;
+               AUDIT_ARG(text, (char *)str);
        }
        return (error);
 }
@@ -1554,8 +1583,13 @@ sysctl_maxprocperuid( void *oldp, size_t *oldlenp, void *newp, size_t newlen )
                error = copyout( &maxprocperuid, oldp, sizeof(int) );
        if ( error == 0 && newp != NULL ) {
                error = copyin( newp, &new_value, sizeof(int) );
-               if ( error == 0 && new_value <= maxproc && new_value > 0 )
-                       maxprocperuid = new_value;
+               if ( error == 0 ) {
+                       AUDIT_ARG(value, new_value);
+                       if ( new_value <= maxproc && new_value > 0 )
+                               maxprocperuid = new_value;
+                       else
+                               error = EINVAL;
+               }
                else
                        error = EINVAL;
        }
@@ -1585,8 +1619,13 @@ sysctl_maxfilesperproc( void *oldp, size_t *oldlenp, void *newp, size_t newlen )
                error = copyout( &maxfilesperproc, oldp, sizeof(int) );
        if ( error == 0 && newp != NULL ) {
                error = copyin( newp, &new_value, sizeof(int) );
-               if ( error == 0 && new_value < maxfiles && new_value > 0 )
-                       maxfilesperproc = new_value;
+               if ( error == 0 ) {
+                       AUDIT_ARG(value, new_value);
+                       if ( new_value < maxfiles && new_value > 0 )
+                               maxfilesperproc = new_value;
+                       else
+                               error = EINVAL;
+               }
                else
                        error = EINVAL;
        }
@@ -1617,8 +1656,13 @@ sysctl_maxproc( void *oldp, size_t *oldlenp, void *newp, size_t newlen )
                error = copyout( &maxproc, oldp, sizeof(int) );
        if ( error == 0 && newp != NULL ) {
                error = copyin( newp, &new_value, sizeof(int) );
-               if ( error == 0 && new_value <= hard_maxproc && new_value > 0 )
-                       maxproc = new_value;
+               if ( error == 0 ) {
+                       AUDIT_ARG(value, new_value);
+                       if ( new_value <= hard_maxproc && new_value > 0 )
+                               maxproc = new_value;
+                       else
+                               error = EINVAL;
+               }
                else
                        error = EINVAL;
        }