Convert DEVFS from an "opt-in" to an "opt-out" option.

If for some reason DEVFS is undesired, the "NODEVFS" option is
needed now.

Pending any significant issues, DEVFS will be made mandatory in
-current on july 1st so that we can start reaping the full
benefits of having it.

sys/alpha/conf/GENERIC

@@ -58,7 +58,6 @@ options 	NFS			#Network Filesystem
 options 	NFS_ROOT		#NFS usable as root device
 options 	MSDOSFS			#MSDOS Filesystem
 options 	CD9660			#ISO 9660 Filesystem
-options 	DEVFS			#Device Filesystem
 options 	PROCFS			#Process filesystem
 options 	COMPAT_43		#Compatible with BSD 4.3 [KEEP THIS!]
 options 	SCSI_DELAY=15000	#Delay (in ms) before probing SCSI 

sys/alpha/conf/NOTES

@@ -58,7 +58,6 @@ options 	NFS			#Network Filesystem
 options 	NFS_ROOT		#NFS usable as root device
 options 	MSDOSFS			#MSDOS Filesystem
 options 	CD9660			#ISO 9660 Filesystem
-options 	DEVFS			#Device Filesystem
 options 	PROCFS			#Process filesystem
 options 	COMPAT_43		#Compatible with BSD 4.3 [KEEP THIS!]
 options 	SCSI_DELAY=15000	#Delay (in ms) before probing SCSI 

sys/amd64/conf/GENERIC

@@ -40,7 +40,6 @@ options 	NFS			#Network Filesystem
 options 	NFS_ROOT		#NFS usable as root device, NFS required
 options 	MSDOSFS			#MSDOS Filesystem
 options 	CD9660			#ISO 9660 Filesystem
-options 	DEVFS			#Device Filesystem
 options 	PROCFS			#Process filesystem
 options 	COMPAT_43		#Compatible with BSD 4.3 [KEEP THIS!]
 options 	SCSI_DELAY=15000	#Delay (in ms) before probing SCSI

sys/conf/NOTES

@@ -672,7 +672,7 @@ options 	PORTAL			#Portal filesystem
 options 	PROCFS			#Process filesystem
 options 	UMAPFS			#UID map filesystem
 options 	UNION			#Union filesystem
-options 	DEVFS			#devices filesystem
+# options 	NODEVFS			#disable devices filesystem
 # The xFS_ROOT options REQUIRE the associated ``options xFS''
 options 	NFS_ROOT		#NFS usable as root device
 # This code enables IFS, an FFS which exports inodes as the namespace.

sys/conf/files

@@ -585,9 +585,9 @@ dev/wds/wd7000.c		optional wds isa
 dev/wi/if_wi.c			optional wi card
 dev/wi/if_wi.c			optional wi pccard
 dev/xe/if_xe.c			optional xe card
-fs/devfs/devfs_vnops.c		optional devfs
+fs/devfs/devfs_vnops.c		standard
-fs/devfs/devfs_vfsops.c		optional devfs
+fs/devfs/devfs_vfsops.c		standard
-fs/devfs/devfs_devs.c		optional devfs
+fs/devfs/devfs_devs.c		standard
 fs/hpfs/hpfs_vfsops.c		optional hpfs
 fs/hpfs/hpfs_vnops.c		optional hpfs
 fs/hpfs/hpfs_hash.c		optional hpfs

sys/conf/options

@@ -62,7 +62,7 @@ CY_PCI_FASTINTR
 DDB
 DDB_UNATTENDED	opt_ddb.h
 GDB_REMOTE_CHAT	opt_ddb.h
-DEVFS
+NODEVFS		opt_devfs.h
 HW_WDOG
 KTRACE
 LIBICONV

sys/fs/devfs/devfs_devs.c

@@ -30,6 +30,7 @@
  */
 
 #include "opt_devfs.h"
+#ifndef NODEVFS
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -431,3 +432,4 @@ devfs_destroy(dev_t dev)
 devfs_create_t *devfs_create_hook = devfs_create;
 devfs_destroy_t *devfs_destroy_hook = devfs_destroy;
 int devfs_present = 1;
+#endif

sys/fs/devfs/devfs_vfsops.c

@@ -35,6 +35,7 @@
  */
 
 #include "opt_devfs.h"
+#ifndef NODEVFS
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -207,3 +208,4 @@ static struct vfsops devfs_vfsops = {
 };
 
 VFS_SET(devfs_vfsops, devfs, VFCF_SYNTHETIC);
+#endif

sys/fs/devfs/devfs_vnops.c

@@ -1,4 +1,3 @@
-#define DEBUG 1
 /*
  * Copyright (c) 1992, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -35,6 +34,9 @@
  * $FreeBSD$
  */
 
+#include <opt_devfs.h>
+#ifndef NODEVFS
+
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/conf.h>
@@ -193,10 +195,6 @@ devfs_getattr(ap)
 	vap->va_nlink = de->de_links;
 	vap->va_fileid = de->de_inode;
 
-#ifdef DEBUG
-	if (error)
-		printf("devfs_getattr: return error %d\n", error);
-#endif
 	return (error);
 }
 
@@ -711,3 +709,4 @@ static struct vnodeopv_desc devfs_specop_opv_desc =
 	{ &devfs_specop_p, devfs_specop_entries };
 
 VNODEOP_SET(devfs_specop_opv_desc);
+#endif

sys/i386/conf/GENERIC

@@ -40,7 +40,6 @@ options 	NFS			#Network Filesystem
 options 	NFS_ROOT		#NFS usable as root device, NFS required
 options 	MSDOSFS			#MSDOS Filesystem
 options 	CD9660			#ISO 9660 Filesystem
-options 	DEVFS			#Device Filesystem
 options 	PROCFS			#Process filesystem
 options 	COMPAT_43		#Compatible with BSD 4.3 [KEEP THIS!]
 options 	SCSI_DELAY=15000	#Delay (in ms) before probing SCSI

sys/i386/conf/NEWCARD

@@ -44,7 +44,6 @@ options 	NFS			#Network Filesystem
 options 	NFS_ROOT		#NFS usable as root device, NFS required
 options 	MSDOSFS			#MSDOS Filesystem
 options 	CD9660			#ISO 9660 Filesystem
-options 	DEVFS			#Device Filesystem
 options 	PROCFS			#Process filesystem
 options 	COMPAT_43		#Compatible with BSD 4.3 [KEEP THIS!]
 options 	SCSI_DELAY=15000	#Delay (in ms) before probing SCSI

sys/i386/conf/NOTES

@@ -672,7 +672,7 @@ options 	PORTAL			#Portal filesystem
 options 	PROCFS			#Process filesystem
 options 	UMAPFS			#UID map filesystem
 options 	UNION			#Union filesystem
-options 	DEVFS			#devices filesystem
+# options 	NODEVFS			#disable devices filesystem
 # The xFS_ROOT options REQUIRE the associated ``options xFS''
 options 	NFS_ROOT		#NFS usable as root device
 # This code enables IFS, an FFS which exports inodes as the namespace.

sys/ia64/conf/GENERIC

@@ -36,7 +36,6 @@ options 	INET6			#IPv6 communications protocols
 options 	FFS			#Berkeley Fast Filesystem
 options 	SOFTUPDATES		#Enable FFS soft updates support
 options 	MFS			#Memory Filesystem
-#options 	DEVFS			#Device Filesystem
 options 	MD_ROOT			#MD is a potential root device
 options 	NFS			#Network Filesystem
 options 	NFS_ROOT		#NFS usable as root device

sys/pc98/conf/GENERIC

@@ -42,7 +42,6 @@ options 	NFS			#Network Filesystem
 options 	NFS_ROOT		#NFS usable as root device, NFS required
 options 	MSDOSFS			#MSDOS Filesystem
 options 	CD9660			#ISO 9660 Filesystem
-#options 	DEVFS			#Device Filesystem
 options 	PROCFS			#Process filesystem
 options 	COMPAT_43		#Compatible with BSD 4.3 [KEEP THIS!]
 options 	SCSI_DELAY=15000	#Delay (in ms) before probing SCSI