From adf0b6fb26d8970a0142c0adaad8a212e634b942 Mon Sep 17 00:00:00 2001
From: Ben Gras <ben@minix3.org>
Date: Wed, 3 Mar 2010 15:47:16 +0000
Subject: [PATCH] No more E{SRC,DST}DIED errno's, replaced by EDEADSRCDST.

The callers don't care about the difference and had to check 3 error
codes instead of one.
---
 drivers/filter/driver.c    | 3 +--
 include/errno.h            | 2 --
 servers/iso9660fs/device.c | 6 +++---
 servers/mfs/device.c       | 6 +++---
 servers/vfs/device.c       | 4 +---
 5 files changed, 8 insertions(+), 13 deletions(-)

diff --git a/drivers/filter/driver.c b/drivers/filter/driver.c
index 97afc6888..dd7c4af53 100644
--- a/drivers/filter/driver.c
+++ b/drivers/filter/driver.c
@@ -564,8 +564,7 @@ static int check_senda(int which)
 
 	amp = &amsgtable[which];
 
-	if ((amp->flags & AMF_DONE) &&
-		(amp->result == EDEADSRCDST || amp->result == EDSTDIED)) {
+	if ((amp->flags & AMF_DONE) && (amp->result == EDEADSRCDST)) {
 
 		return BD_DEAD;
 	}
diff --git a/include/errno.h b/include/errno.h
index a6b6ac25a..3a252cae6 100644
--- a/include/errno.h
+++ b/include/errno.h
@@ -119,8 +119,6 @@ extern int errno;		  /* place where the error numbers go */
 #define EDEADSRCDST  (_SIGN 105)  /* source or destination is not alive */
 #define ENOTREADY    (_SIGN 106)  /* source or destination is not ready */
 #define EBADREQUEST  (_SIGN 107)  /* destination cannot handle request */
-#define ESRCDIED     (_SIGN 108)  /* source just died */
-#define EDSTDIED     (_SIGN 109)  /* destination just died */
 #define ETRAPDENIED  (_SIGN 110)  /* IPC trap not allowed */
 #define EDONTREPLY   (_SIGN 201)  /* pseudo-code: don't send a reply */
 
diff --git a/servers/iso9660fs/device.c b/servers/iso9660fs/device.c
index 0b8cf25cd..1c867a8cc 100644
--- a/servers/iso9660fs/device.c
+++ b/servers/iso9660fs/device.c
@@ -188,7 +188,7 @@ int flags;			/* special flags, like O_NONBLOCK */
   driver_e = driver_endpoints[(dev >> MAJOR) & BYTE].driver_e;
   
   /* See if driver is roughly valid. */
-  if (driver_e == NONE) return(EDSTDIED);
+  if (driver_e == NONE) return(EDEADSRCDST);
   
   /* The io vector copying relies on this I/O being for FS itself. */
   if(proc_e != SELF_E) {
@@ -229,7 +229,7 @@ int flags;			/* special flags, like O_NONBLOCK */
    * - VFS sends the new driver endp for the FS proc and the request again 
    */
   if (r != OK) {
-      if (r == EDEADSRCDST || r == EDSTDIED || r == ESRCDIED) {
+      if (r == EDEADSRCDST) {
           printf("ISOFS(%d) dead driver %d\n", SELF_E, driver_e);
           driver_endpoints[(dev >> MAJOR) & BYTE].driver_e = NONE;
           return(r);
@@ -302,7 +302,7 @@ message *mess_ptr;		/* pointer to message for task */
 
   r = sendrec(task_nr, mess_ptr);
 	if (r != OK) {
-		if (r == EDEADSRCDST || r == EDSTDIED || r == ESRCDIED) {
+		if (r == EDEADSRCDST) {
 			printf("fs: dead driver %d\n", task_nr);
 			panic(__FILE__, "should handle crashed drivers",
 				NO_NUM);
diff --git a/servers/mfs/device.c b/servers/mfs/device.c
index b42829179..668e18639 100644
--- a/servers/mfs/device.c
+++ b/servers/mfs/device.c
@@ -178,7 +178,7 @@ int flags;			/* special flags, like O_NONBLOCK */
   /* See if driver is roughly valid. */
   if (driver_e == NONE) {
       printf("MFS(%d) block_dev_io: no driver for dev %x\n", SELF_E, dev);
-      return(EDSTDIED);
+      return(EDEADSRCDST);
   }
   
   /* The io vector copying relies on this I/O being for FS itself. */
@@ -220,7 +220,7 @@ int flags;			/* special flags, like O_NONBLOCK */
    * - VFS sends the new driver endp for the FS proc and the request again 
    */
   if (r != OK) {
-      if (r == EDEADSRCDST || r == EDSTDIED || r == ESRCDIED) {
+      if (r == EDEADSRCDST) {
           printf("MFS(%d) dead driver %d\n", SELF_E, driver_e);
           driver_endpoints[(dev >> MAJOR) & BYTE].driver_e = NONE;
           return r;
@@ -329,7 +329,7 @@ message *mess_ptr;		/* pointer to message for task */
 
   r = sendrec(task_nr, mess_ptr);
 	if (r != OK) {
-		if (r == EDEADSRCDST || r == EDSTDIED || r == ESRCDIED) {
+		if (r == EDEADSRCDST) {
 			printf("fs: dead driver %d\n", task_nr);
 			panic(__FILE__, "should handle crashed drivers",
 				NO_NUM);
diff --git a/servers/vfs/device.c b/servers/vfs/device.c
index 8ccb12b51..ddf980e96 100644
--- a/servers/vfs/device.c
+++ b/servers/vfs/device.c
@@ -158,8 +158,6 @@ PUBLIC void dev_status(message *m)
 		if ((r = sendrec(m->m_source, &st)) != OK) {
 			printf("DEV_STATUS failed to %d: %d\n", m->m_source, r);
 			if (r == EDEADSRCDST) return;
-			if (r == EDSTDIED) return;
-			if (r == ESRCDIED) return;
 			panic(__FILE__,"couldn't sendrec for DEV_STATUS", r);
 		}
 
@@ -619,7 +617,7 @@ message *mess_ptr;		/* pointer to message for task */
   proc_e = mess_ptr->IO_ENDPT;
   r = sendrec(task_nr, mess_ptr);
   if (r != OK) {
-	if (r == EDEADSRCDST || r == EDSTDIED || r == ESRCDIED) {
+	if (r == EDEADSRCDST) {
 		printf("fs: dead driver %d\n", task_nr);
 		dmap_unmap_by_endpt(task_nr);
 		return(r);