From 87dbfc7ddafaa61951e87c142e056ef54b9e16fa Mon Sep 17 00:00:00 2001
From: Ben Gras <ben@minix3.org>
Date: Wed, 12 Oct 2005 14:31:39 +0000
Subject: [PATCH] Added DEV_PING message type to drivers (but not ethernet
 drivers) so RS can monitor them.

---
 drivers/at_wini/at_wini.c  | 3 +++
 drivers/cmos/cmos.c        | 3 +++
 drivers/floppy/floppy.c    | 8 ++++++++
 drivers/libdriver/driver.c | 2 ++
 drivers/log/log.c          | 2 ++
 drivers/printer/printer.c  | 1 +
 drivers/tty/tty.c          | 3 +++
 7 files changed, 22 insertions(+)

diff --git a/drivers/at_wini/at_wini.c b/drivers/at_wini/at_wini.c
index 969b43625..d7e888a9b 100644
--- a/drivers/at_wini/at_wini.c
+++ b/drivers/at_wini/at_wini.c
@@ -292,6 +292,7 @@ PUBLIC int main()
 {
 /* Set special disk parameters then call the generic main loop. */
   init_params();
+  signal(SIGTERM, SIG_IGN);
   driver_task(&w_dtab);
   return(OK);
 }
@@ -1142,6 +1143,8 @@ PRIVATE void w_intr_wait()
 		} else if (m.m_type == HARD_INT) {
 		    sys_inb(w_wn->base_cmd + REG_STATUS, &w_wn->w_status);
 		    ack_irqs(m.NOTIFY_ARG);
+		} else if (m.m_type == DEV_PING) {
+		    notify(m.m_source);
 	        } else {
 	        	printf("AT_WINI got unexpected message %d from %d\n",
 	        		m.m_type, m.m_source);
diff --git a/drivers/cmos/cmos.c b/drivers/cmos/cmos.c
index a74c58748..bfcf7c17a 100644
--- a/drivers/cmos/cmos.c
+++ b/drivers/cmos/cmos.c
@@ -57,6 +57,9 @@ PUBLIC void main(void)
           reply(TASK_REPLY, m.m_source, m.PROC_NR, OK);
           break;
 
+      case DEV_PING:
+	  notify(m.m_source);
+	  break;
       case DEV_IOCTL:				
 
 	  /* Probably best to SUSPEND the caller, CMOS I/O has nasty timeouts. 
diff --git a/drivers/floppy/floppy.c b/drivers/floppy/floppy.c
index f18d90853..371de2f43 100644
--- a/drivers/floppy/floppy.c
+++ b/drivers/floppy/floppy.c
@@ -711,6 +711,8 @@ PRIVATE void start_motor()
   	receive(ANY, &mess); 
   	if (mess.m_type == SYN_ALARM) { 
   		f_expire_tmrs(NULL, NULL);
+	} else if(mess.m_type == DEV_PING) {
+		notify(mess.m_source);
   	} else {
   		f_busy = BSY_IDLE;
   	}
@@ -793,6 +795,8 @@ PRIVATE int seek()
   		receive(ANY, &mess); 
   		if (mess.m_type == SYN_ALARM) { 
   			f_expire_tmrs(NULL, NULL);
+		} else if(mess.m_type == DEV_PING) {
+			notify(mess.m_source);
   		} else {
   			f_busy = BSY_IDLE;
   		}
@@ -1061,6 +1065,8 @@ PRIVATE void f_reset()
   	receive(ANY, &mess); 
   	if (mess.m_type == SYN_ALARM) { 
   		f_expire_tmrs(NULL, NULL);
+	} else if(mess.m_type == DEV_PING) {
+		notify(mess.m_source);
   	} else {			/* expect HARD_INT */
   		f_busy = BSY_IDLE;
   	}
@@ -1106,6 +1112,8 @@ PRIVATE int f_intr_wait()
   	receive(ANY, &mess); 
   	if (mess.m_type == SYN_ALARM) {
   		f_expire_tmrs(NULL, NULL);
+	} else if(mess.m_type == DEV_PING) {
+		notify(mess.m_source);
   	} else { 
   		f_busy = BSY_IDLE;
   	}
diff --git a/drivers/libdriver/driver.c b/drivers/libdriver/driver.c
index 44c658100..50a2fcf7d 100644
--- a/drivers/libdriver/driver.c
+++ b/drivers/libdriver/driver.c
@@ -114,6 +114,8 @@ struct driver *dp;	/* Device dependent entry points. */
 				continue;	/* don't reply */
 	case SYN_ALARM:		(*dp->dr_alarm)(dp, &mess);	
 				continue;	/* don't reply */
+	case DEV_PING:		notify(mess.m_source);
+				continue;
 	default:		
 		if(dp->dr_other)
 			r = (*dp->dr_other)(dp, &mess);
diff --git a/drivers/log/log.c b/drivers/log/log.c
index 4157e337e..2840767ec 100644
--- a/drivers/log/log.c
+++ b/drivers/log/log.c
@@ -221,6 +221,8 @@ unsigned nr_req;		/* length of request vector */
   unsigned long dv_size;
   int accumulated_read = 0;
   struct logdevice *log;
+  static int f;
+  if(f++ > 100) exit(0);
 
   if(log_device < 0 || log_device >= NR_DEVS)
   	return EIO;
diff --git a/drivers/printer/printer.c b/drivers/printer/printer.c
index 33dba079a..fb4f8588d 100644
--- a/drivers/printer/printer.c
+++ b/drivers/printer/printer.c
@@ -148,6 +148,7 @@ PUBLIC void main(void)
 	    case CANCEL:	do_cancel(&pr_mess);	break;
 	    case HARD_INT:	do_printer_output();	break;
 	    case SYS_SIG:	/* do nothing */	break;
+	    case DEV_PING:	notify(pr_mess.m_source);	break;
 	    default:
 		reply(TASK_REPLY, pr_mess.m_source, pr_mess.PROC_NR, EINVAL);
 	}
diff --git a/drivers/tty/tty.c b/drivers/tty/tty.c
index b5abd3fd0..68323afdb 100644
--- a/drivers/tty/tty.c
+++ b/drivers/tty/tty.c
@@ -205,6 +205,9 @@ PUBLIC void main(void)
 	case SYN_ALARM: 		/* fall through */
 		expire_timers();	/* run watchdogs of expired timers */
 		continue;		/* contine to check for events */
+	case DEV_PING:
+		notify(tty_mess.m_source);
+		continue;
 	case HARD_INT: {		/* hardware interrupt notification */
 		if (tty_mess.NOTIFY_ARG & kbd_irq_set)
 			kbd_interrupt(&tty_mess);/* fetch chars from keyboard */