added initial files.

Makefile

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+# Makefile for diethotplug
+#
+# Copyright (C) 2000,2001 Greg Kroah-Hartman <greg@kroah.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+#
+
+# Set the following to `true' to make a debuggable build.
+# Leave this set to `false' for production use.
+DEBUG = false
+
+
+ROOT =		udev
+#PREFIX =	diet
+VERSION =	0.01
+INSTALL_DIR =	/usr/local/bin
+RELEASE_NAME =	$(PREFIX)$(ROOT)-$(VERSION)
+
+
+# Comment out this line to build with something other 
+# than the local version of klibc
+#KLIBC = true
+
+# If you are running a cross compiler, you may want to set this
+# to something more interesting, like "arm-linux-".  I you want
+# to compile vs uClibc, that can be done here as well.
+CROSS = #/usr/i386-linux-uclibc/usr/bin/i386-uclibc-
+CC = $(CROSS)gcc
+AR = $(CROSS)ar
+STRIP = $(CROSS)strip
+
+
+# code taken from uClibc to determine the current arch
+ARCH := ${shell $(CC) -dumpmachine | sed -e s'/-.*//' -e 's/i.86/i386/' -e 's/sparc.*/sparc/' \
+	-e 's/arm.*/arm/g' -e 's/m68k.*/m68k/' -e 's/ppc/powerpc/g'}
+
+# code taken from uClibc to determine the gcc include dir
+GCCINCDIR := ${shell $(CC) -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp"}
+
+# code taken from uClibc to determine the libgcc.a filename
+GCC_LIB := $(shell $(CC) -print-libgcc-file-name )
+
+# use '-Os' optimization if available, else use -O2
+OPTIMIZATION := ${shell if $(CC) -Os -S -o /dev/null -xc /dev/null >/dev/null 2>&1; \
+		then echo "-Os"; else echo "-O2" ; fi}
+
+WARNINGS := -Wall -Wshadow -Wstrict-prototypes 
+
+# Some nice architecture specific optimizations
+ifeq ($(strip $(TARGET_ARCH)),arm)
+	OPTIMIZATION+=-fstrict-aliasing
+endif
+ifeq ($(strip $(TARGET_ARCH)),i386)
+	OPTIMIZATION+=-march=i386
+	OPTIMIZATION += ${shell if $(CC) -mpreferred-stack-boundary=2 -S -o /dev/null -xc \
+		/dev/null >/dev/null 2>&1; then echo "-mpreferred-stack-boundary=2"; fi}
+	OPTIMIZATION += ${shell if $(CC) -malign-functions=0 -malign-jumps=0 -S -o /dev/null -xc \
+		/dev/null >/dev/null 2>&1; then echo "-malign-functions=0 -malign-jumps=0"; fi}
+	CFLAGS+=-pipe
+else
+	CFLAGS+=-pipe
+endif
+
+# if DEBUG is enabled, then we do not strip or optimize
+ifeq ($(strip $(DEBUG)),true)
+	CFLAGS  += $(WARNINGS) -O1 -g -DDEBUG -D_GNU_SOURCE
+	LDFLAGS += -Wl,-warn-common
+	STRIPCMD = /bin/true -Since_we_are_debugging
+else
+	CFLAGS  += $(WARNINGS) $(OPTIMIZATION) -fomit-frame-pointer -D_GNU_SOURCE
+	LDFLAGS += -s -Wl,-warn-common
+	STRIPCMD = $(STRIP) -s --remove-section=.note --remove-section=.comment
+endif
+
+# If we are using our version of klibc, then we need to build and link it.
+# Otherwise, use glibc and link statically.
+ifeq ($(strip $(KLIBC)),true)
+	KLIBC_DIR	= klibc
+	INCLUDE_DIR	:= $(KLIBC_DIR)/include
+	# arch specific objects
+	ARCH_LIB_OBJS =	\
+			$(KLIBC_DIR)/bin-$(ARCH)/start.o	\
+			$(KLIBC_DIR)/bin-$(ARCH)/klibc.a
+
+	LIB_OBJS =	$(GCC_LIB)
+
+	LIBC =	$(ARCH_LIB_OBJS) $(LIB_OBJS)
+	CFLAGS += -nostdinc -I$(INCLUDE_DIR) -I$(GCCINCDIR)
+	LDFLAGS = --static --nostdlib -nostartfiles
+else
+	LIBC = 
+	CFLAGS += -I$(GCCINCDIR)
+	LIB_OBJS = -lc
+	LDFLAGS = --static 
+endif
+
+all: $(LIBC) $(ROOT)
+
+$(ARCH_LIB_OBJS) :
+	$(MAKE) -C klibc
+
+OBJS =	udev.o		\
+	logging.o
+
+
+# header files automatically generated
+GEN_HEADERS =	udev_version.h
+
+# Rules on how to create the generated header files
+udev_version.h:
+	@echo \#define UDEV_VERSION \"$(VERSION)\" > $@
+
+
+$(ROOT): $(GEN_HEADERS) $(OBJS)
+	$(CC) $(LDFLAGS) -o $(ROOT) $(OBJS) $(LIB_OBJS) $(ARCH_LIB_OBJS)
+	$(STRIPCMD) $(ROOT)
+
+clean:
+	-find . \( -not -type d \) -and \( -name '*~' -o -name '*.[oas]' \) -type f -print \
+	 | xargs rm -f 
+	-rm -f core $(ROOT) $(GEN_HEADERS)
+	$(MAKE) -C klibc clean
+
+DISTFILES = $(shell find . \( -not -name '.' \) -print | grep -v CVS | grep -v "\.tar\.gz" | grep -v "\/\." | grep -v releases | grep -v BitKeeper | grep -v SCCS )
+DISTDIR := $(RELEASE_NAME)
+srcdir = .
+release: $(DISTFILES) clean
+#	@echo $(DISTFILES)
+	@-rm -rf $(DISTDIR)
+	@mkdir $(DISTDIR)
+	@-chmod 777 $(DISTDIR)
+	@for file in $(DISTFILES); do			\
+		if test -d $$file; then			\
+		  	mkdir $(DISTDIR)/$$file;	\
+		else					\
+			cp -p $$file $(DISTDIR)/$$file;	\
+		fi;					\
+	done
+	@tar -c $(DISTDIR) | gzip -9 > $(RELEASE_NAME).tar.gz
+	@rm -rf $(DISTDIR)
+	@echo "Built $(RELEASE_NAME).tar.gz"

klibc/Makefile

@@ -0,0 +1,3 @@
+
+clean:
+	@echo "all clean"

logging.c

@@ -0,0 +1,52 @@
+/*
+ * logging.c
+ *
+ * Simple logging functions that can be compiled away into nothing.
+ *
+ * Copyright (C) 2001-2003 Greg Kroah-Hartman <greg@kroah.com>
+ *
+ *	This program is free software; you can redistribute it and/or modify it
+ *	under the terms of the GNU General Public License as published by the
+ *	Free Software Foundation, version 2 of the License.
+ * 
+ *	This program is distributed in the hope that it will be useful, but
+ *	WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *	General Public License for more details.
+ * 
+ *	You should have received a copy of the GNU General Public License along
+ *	with this program; if not, write to the Free Software Foundation, Inc.,
+ *	675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <stdarg.h>
+#include <syslog.h>
+#include "udev.h"
+
+#ifdef DEBUG
+
+static int logging_init = 0;
+
+static void init_logging (void)
+{
+	openlog ("udev", 0, LOG_DAEMON);
+	logging_init = 1;
+}
+
+/**
+ * log_message - sends a message to the logging facility
+ */
+int log_message (int level, const char *format, ...)
+{
+	va_list	args;
+
+	if (!logging_init)
+		init_logging();
+	va_start (args, format);
+	vsyslog (level, format, args);
+	va_end (args);
+	return 1;
+}
+
+#endif

udev.c

@@ -0,0 +1,83 @@
+/*
+ * udev.c
+ *
+ * Userspace devfs
+ *
+ * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
+ *
+ *
+ *	This program is free software; you can redistribute it and/or modify it
+ *	under the terms of the GNU General Public License as published by the
+ *	Free Software Foundation version 2 of the License.
+ * 
+ *	This program is distributed in the hope that it will be useful, but
+ *	WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *	General Public License for more details.
+ * 
+ *	You should have received a copy of the GNU General Public License along
+ *	with this program; if not, write to the Free Software Foundation, Inc.,
+ *	675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include "udev.h"
+#include "udev_version.h"
+
+
+static char *get_action(void)
+{
+	char *action;
+
+	action = getenv("ACTION");
+	return action;
+}
+
+
+/* yeah this should be dynamically allocated... */
+static char device[255];
+
+static char *get_device(void)
+{
+	char *temp;
+
+	temp = getenv("DEVPATH");
+	if (temp == NULL)
+		return NULL;
+	strcpy(device, SYSFS_ROOT);
+	strcat(device, temp);
+
+	return device;
+}
+
+
+int main(int argc, char *argv[])
+{
+	char *subsystem;
+	char *action;
+	char *dev;
+	
+	if (argc != 2) {
+		dbg ("unknown number of arguments");
+		return 1;
+	}
+
+	subsystem = argv[1];
+
+	action = get_action();
+	if (!action) {
+		dbg ("no action?");
+		return 1;
+	}
+
+	dev = get_device();
+	if (!dev) {
+		dbg ("no device?");
+		return 1;
+	}
+
+	return 0;
+}
+

udev.h

@@ -0,0 +1,41 @@
+/*
+ * udev.h
+ *
+ * Userspace devfs
+ *
+ * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
+ *
+ *	This program is free software; you can redistribute it and/or modify it
+ *	under the terms of the GNU General Public License as published by the
+ *	Free Software Foundation version 2 of the License.
+ * 
+ *	This program is distributed in the hope that it will be useful, but
+ *	WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *	General Public License for more details.
+ * 
+ *	You should have received a copy of the GNU General Public License along
+ *	with this program; if not, write to the Free Software Foundation, Inc.,
+ *	675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#ifndef UDEV_H
+#define UDEV_H
+
+
+#ifdef DEBUG
+#include <syslog.h>
+	#define dbg(format, arg...) do { log_message (LOG_DEBUG, __FUNCTION__ ": " format, ## arg); } while (0)
+#else
+	#define dbg(format, arg...) do { } while (0)
+#endif
+
+
+/* Lots of constants that should be in a config file sometime */
+#define SYSFS_ROOT	"/sys"
+#define MKNOD		"/bin/mknod"
+
+
+#endif
+