Home | History | Annotate | Line # | Download | only in kernspace 
      1 /*	$NetBSD: sendsig.c,v 1.2 2020/05/23 23:42:44 ad Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2011 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  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
     17  * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
     18  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     19  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     20  * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
     23  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
     25  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     26  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
     27  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 
     30 #include <sys/cdefs.h>
     31 #if !defined(lint)
     32 __RCSID("$NetBSD: sendsig.c,v 1.2 2020/05/23 23:42:44 ad Exp $");
     33 #endif /* !lint */
     34 
     35 #include <sys/param.h>
     36 #include <sys/proc.h>
     37 
     38 #include <rump/rump.h>
     39 
     40 #include "kernspace.h"
     41 
     42 /*
     43  * loop until a non-system process appears and we can send it a signal
     44  */
     45 void
     46 rumptest_sendsig(char *signo)
     47 {
     48 	struct proc *p;
     49 	bool sent = false;
     50 	int sig;
     51 
     52 	sig = strtoull(signo, NULL, 10);
     53 	rump_boot_setsigmodel(RUMP_SIGMODEL_RAISE);
     54 
     55 	mutex_enter(&proc_lock);
     56 	while (!sent) {
     57 		PROCLIST_FOREACH(p, &allproc) {
     58 			if (p->p_pid > 1) {
     59 				mutex_enter(p->p_lock);
     60 				psignal(p, sig);
     61 				mutex_exit(p->p_lock);
     62 				sent = true;
     63 				break;
     64 			}
     65 		}
     66 		kpause("w8", false, 1, &proc_lock);
     67 	}
     68 	mutex_exit(&proc_lock);
     69 
     70 	/* restore default */
     71 	rump_boot_setsigmodel(RUMP_SIGMODEL_PANIC);
     72 }
     73 
     74 void
     75 rumptest_localsig(int signo)
     76 {
     77 	struct proc *p = curproc;
     78 
     79 	mutex_enter(p->p_lock);
     80 	psignal(p, signo);
     81 	mutex_exit(p->p_lock);
     82 }
     83