Add previous work

.gitignore

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+# Prerequisites
+*.d
+
+# Object files
+*.o
+*.ko
+*.obj
+*.elf
+
+# Linker output
+*.ilk
+*.map
+*.exp
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Libraries
+*.lib
+*.a
+*.la
+*.lo
+
+# Shared objects (inc. Windows DLLs)
+*.dll
+*.so
+*.so.*
+*.dylib
+
+# Executables
+*.exe
+*.out
+*.app
+*.i*86
+*.x86_64
+*.hex
+
+# Debug files
+*.dSYM/
+*.su
+*.idb
+*.pdb
+
+# Kernel Module Compile Results
+*.mod*
+*.cmd
+.tmp_versions/
+modules.order
+Module.symvers
+Mkfile.old
+dkms.conf

Makefile

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+LINUX_SRC := "./linux-3.10.x-bromolow-25426"
+PWD   := $(shell pwd)
+SRCS   = internal/call_protected.c internal/override_symbol.c internal/stealth.c \
+		 config/cmdline_delegate.c config/runtime_config.c \
+		 shim/boot_device_shim.c shim/bios/bios_shims_collection.c shim/bios_shim.c \
+	     redpill_main.c
+OBJS   = $(SRCS:.c=.o)
+#this module name CAN NEVER be the same as the main file (or it will get weird ;)) and the main file has to be included
+# in object file. So here we say the module file(s) which will create .ko(s) is "redpill.o" and that other objects which
+# must be linked (redpill-objs variable)
+obj-m += redpill.o
+redpill-objs := $(OBJS)
+ccflags-y := -std=gnu99 -fgnu89-inline -Wno-declaration-after-statement -g -fno-inline
+
+all:
+	make -C $(LINUX_SRC) M=$(PWD) modules
+clean:
+	make -C $(LINUX_SRC) M=$(PWD) clean

README.md

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+# 💊 RedPill LKM
+
+---
+
+## THIS IS WORK IN PROGRESS
+There's nothing to run/see here (yet ;)).
+
+---
+
+## What is this?
+This is a major part of a tool which will be able to run a DSM instance for research purposes without
+engaging your real DS machine and risking your data in the process (ask me how I know...).
+
+## Target audience
+This repository is target towards **developers** willing to learn and help with implementation of peculiarities of 
+Synology's DSM Linux distribution.
+
+Read about the quirk in a separate repo: https://github.com/RedPill-TTG/dsm-research/tree/master/quirks
+
+## How to build?
+1. You need Synology's GPL sources for the kernel. Check the [Makefile](Makefile) for details
+2. `cd` to kernel sources
+3. `cp synconfig/bromolow .config` (or any desired one)
+4. `make oldconfig ; make modules_prepare`
+5. `cd` back to the module directory
+5. `make`
+6. You will get a `redpill.ko` module as the result, you can `insmod` it
+
+## Documentation split
+The documentation regarding actual quirks/mechanisms/discoveries regarding DSM is present in a dedicated research repo 
+at https://github.com/RedPill-TTG/dsm-research/. Documentation in this repository is solely aimed to explain 
+implementation details of the kernel module. It will mostly be available in forms of long(ish) doc blocks.

common.h

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+#ifndef REDPILLLKM_COMMON_H
+#define REDPILLLKM_COMMON_H
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/slab.h> //kmalloc
+#include <linux/string.h>
+#include <linux/types.h> //bool & others
+
+#define __FILENAME__ (strrchr(__FILE__, '/') ? strrchr(__FILE__, '/') + 1 : __FILE__)
+
+#ifdef STEALTH_MODE
+#define pr_loc_err(fmt, ...)
+#define pr_loc_inf(fmt, ...)
+#define pr_loc_wrn(fmt, ...)
+#define pr_loc_dbg(fmt, ...)
+#else
+//TODO currently debug is printed with info
+#define pr_loc_crt(fmt, ...) pr_crit( "<%s/%s:%d> " pr_fmt(fmt) "\n", KBUILD_MODNAME, __FILENAME__, __LINE__, ##__VA_ARGS__)
+#define pr_loc_err(fmt, ...) pr_err ( "<%s/%s:%d> " pr_fmt(fmt) "\n", KBUILD_MODNAME, __FILENAME__, __LINE__, ##__VA_ARGS__)
+#define pr_loc_inf(fmt, ...) pr_info( "<%s/%s:%d> " pr_fmt(fmt) "\n", KBUILD_MODNAME, __FILENAME__, __LINE__, ##__VA_ARGS__)
+#define pr_loc_wrn(fmt, ...) pr_warn( "<%s/%s:%d> " pr_fmt(fmt) "\n", KBUILD_MODNAME, __FILENAME__, __LINE__, ##__VA_ARGS__)
+#define pr_loc_dbg(fmt, ...) pr_info( "<%s/%s:%d> " pr_fmt(fmt) "\n", KBUILD_MODNAME, __FILENAME__, __LINE__, ##__VA_ARGS__)
+
+#define pr_loc_bug(fmt, ...) pr_err ( "<%s/%s:%d> !!BUG!! " pr_fmt(fmt) "\n", KBUILD_MODNAME, __FILENAME__, __LINE__, ##__VA_ARGS__)
+#endif //STEALTH_MODE
+
+#define sizeof_str_chunk(param) sizeof(param)-1 //gets the size of a string minus trailing nullbyte (useful for partial matches)
+
+#endif //REDPILLLKM_COMMON_H