New applet, udhcp client

include/applets.h

@@ -479,6 +479,9 @@
 #ifdef CONFIG_TTY
 	APPLET(tty, tty_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER)
 #endif
+#ifdef CONFIG_UDHCPC
+	APPLET(udhcpc, udhcpc_main, _BB_DIR_SBIN, _BB_SUID_NEVER)
+#endif
 #ifdef CONFIG_UMOUNT
 	APPLET(umount, umount_main, _BB_DIR_BIN, _BB_SUID_NEVER)
 #endif

include/usage.h

@@ -1905,6 +1905,20 @@
 	"$ tty\n" \
 	"/dev/tty2\n"
 
+#define udhcpc_trivial_usage \
+	"[-fqv] [-c CLIENTID] [-H HOSTNAME] [-i INTERFACE]\n\[-p file] [-r IP] [-s script]"
+#define udhcpc_full_usage \
+	"\t-c,\t--clientid=CLIENTID\tClient identifier\n" \
+	"\t-H,\t--hostname=HOSTNAME\tClient hostname\n" \
+	"\t-f,\t--foreground\tDo not fork after getting lease\n" \
+	"\t-i,\t--interface=INTERFACE\tInterface to use (default: eth0)\n" \
+	"\t-n,\t--now\tExit with failure if lease cannot be immediately negotiated.\n" \
+	"\t-p,\t--pidfile=file\tStore process ID of daemon in file\n" \
+	"\t-q,\t--quit\tQuit after obtaining lease\n" \
+	"\t-r,\t--request=IP\tIP address to request (default: none)\n" \
+	"\t-s,\t--script=file\tRun file at dhcp events (default: /usr/share/udhcpc/default.script)\n" \
+	"\t-v,\t--version\tDisplay version"
+
 #ifdef CONFIG_FEATURE_MOUNT_FORCE
   #define USAGE_MOUNT_FORCE(a) a
 #else

networking/Makefile.in

@@ -34,6 +34,7 @@ NETWORKING-$(CONFIG_ROUTE)		+= route.o
 NETWORKING-$(CONFIG_TELNET)		+= telnet.o
 NETWORKING-$(CONFIG_TFTP)		+= tftp.o
 NETWORKING-$(CONFIG_TRACEROUTE)		+= traceroute.o
+NETWORKING-$(CONFIG_UDHCPC)		+= udhcpc.o
 NETWORKING-$(CONFIG_WGET)		+= wget.o
 
 libraries-y+=$(NETWORKING_DIR)$(NETWORKING_AR)

networking/config.in

@@ -46,6 +46,7 @@ if [ "$CONFIG_TRACEROUTE" = "y" ]; then
     bool '  Enable verbose output'			CONFIG_FEATURE_TRACEROUTE_VERBOSE
     bool '  Enable SO_DEBUG option'	CONFIG_FEATURE_TRACEROUTE_SO_DEBUG
 fi
+bool 'udhcpc'       CONFIG_UDHCPC
 bool 'wget'	    CONFIG_WGET
 if [ "$CONFIG_WGET" = "y" ]; then
     bool '  Enable a nifty process meter (+2k)'	CONFIG_FEATURE_WGET_STATUSBAR