base-files: preinit: get rid of /dev/null redirections and use grep -q where applicable

SVN-Revision: 19478

package/base-files/files/lib/network/config.sh

@@ -161,6 +161,10 @@ setup_interface_none() {
 	env -i ACTION="ifup" INTERFACE="$2" DEVICE="$1" PROTO=none /sbin/hotplug-call "iface" &
 }
 
+stop_interface_none() {
+	env -i ACTION="ifdown" INTERFACE="$2" DEVICE="$1" PROTO=none /sbin/hotplug-call "iface" &
+}
+
 setup_interface_static() {
 	local iface="$1"
 	local config="$2"

package/base-files/files/lib/preinit/10_check_for_mtd

@@ -10,7 +10,7 @@ mount_no_mtd() {
 
 check_for_mtd() {
     check_skip || {
-	grep rootfs_data /proc/mtd >/dev/null 2>/dev/null || {
+	grep -qs rootfs_data /proc/mtd || {
 	    mount_no_mtd && pi_mount_skip_next=true
 	}
     }

package/base-files/files/lib/preinit/10_indicate_preinit

@@ -9,19 +9,19 @@ preinit_ip() {
 	pi_ifname=$ifname    
     fi
 
-    [ -n "$pi_ifname" ] && grep "$pi_ifname" /proc/net/dev >/dev/null && {
+    [ -n "$pi_ifname" ] && grep -q "$pi_ifname" /proc/net/dev && {
 	ifconfig $pi_ifname $pi_ip netmask $pi_netmask broadcast $pi_broadcast up
     }
 }
 
 preinit_ip_deconfig() {
-    [ -n "$pi_ifname" ] && grep "$pi_ifname" /proc/net/dev >/dev/null && {
+    [ -n "$pi_ifname" ] && grep -q "$pi_ifname" /proc/net/dev && {
 	ifconfig $pi_ifname 0.0.0.0 down
     }
 }
 
 preinit_net_echo() {
-	[ -n "$pi_ifname" ] && grep "$pi_ifname" /proc/net/dev >/dev/null && {
+	[ -n "$pi_ifname" ] && grep -q "$pi_ifname" /proc/net/dev && {
 		{ 
 			[ "$pi_preinit_net_messages" = "y" ] || {
     		     		[ "$pi_failsafe_net_message"  = "true" ] && 

package/base-files/files/lib/preinit/30_device_fs_daemons

@@ -23,7 +23,7 @@ init_udev() {
 
 init_device_fs() {
     HOTPLUG=
-    if grep devfs /proc/filesystems > /dev/null; then
+    if grep -q devfs /proc/filesystems; then
 	init_devfs
     elif [ -x /sbin/hotplug2 ]; then
 	init_hotplug2

package/base-files/files/lib/preinit/50_choose_console

@@ -7,7 +7,7 @@ choose_console() {
     # that's why we use /dev/pty/m0 and m1 (or equivalent) as replacement
     # for /dev/console if there's no serial console available
 
-    if grep devfs /proc/filesystems > /dev/null; then
+    if grep -q devfs /proc/filesystems; then
 	M0=/dev/pty/m0
 	M1=/dev/pty/m1
 	M2=/dev/pty/m1