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kern_stub.c revision 1.1 
      1 /*	$NetBSD: kern_stub.c,v 1.1 2007/02/10 11:32:21 ad Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2007 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the NetBSD
     18  *	Foundation, Inc. and its contributors.
     19  * 4. Neither the name of The NetBSD Foundation nor the names of its
     20  *    contributors may be used to endorse or promote products derived
     21  *    from this software without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     24  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     25  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     26  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     27  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     33  * POSSIBILITY OF SUCH DAMAGE.
     34  */
     35 
     36 /*
     37  * Stubs for system calls and facilities not included in the system.
     38  */
     39 
     40 #include <sys/cdefs.h>
     41 __KERNEL_RCSID(0, "$NetBSD: kern_stub.c,v 1.1 2007/02/10 11:32:21 ad Exp $");
     42 
     43 #include "opt_ptrace.h"
     44 
     45 #include <sys/param.h>
     46 #include <sys/kernel.h>
     47 #include <sys/proc.h>
     48 #include <sys/signalvar.h>
     49 #include <sys/syscallargs.h>
     50 
     51 /*
     52  * Nonexistent system call-- signal process (may want to handle it).  Flag
     53  * error in case process won't see signal immediately (blocked or ignored).
     54  */
     55 #ifndef PTRACE
     56 __weak_alias(sys_ptrace, sys_nosys);
     57 #endif
     58 
     59 /*
     60  * Scheduler activations system calls.  These need to remain until libc's
     61  * major version is bumped.
     62  */
     63 __strong_alias(sys_sa_register, sys_nosys);
     64 __strong_alias(sys_sa_stacks, sys_nosys);
     65 __strong_alias(sys_sa_enable, sys_nosys);
     66 __strong_alias(sys_sa_setconcurrency, sys_nosys);
     67 __strong_alias(sys_sa_yield, sys_nosys);
     68 __strong_alias(sys_sa_preempt, sys_nosys);
     69 __strong_alias(sys_sa_unblockyield, sys_nosys);
     70 
     71 /* ARGSUSED */
     72 int
     73 sys_nosys(struct lwp *l, void *v, register_t *retval)
     74 {
     75 
     76 	mutex_enter(&proclist_mutex);
     77 	psignal(l->l_proc, SIGSYS);
     78 	mutex_exit(&proclist_mutex);
     79 	return ENOSYS;
     80 }
     81