diff --git a/programs/develop/ktcc/trunk/bin/lib/libck.a b/programs/develop/ktcc/trunk/bin/lib/libck.a
index cd0266c337..f41bc4736d 100644
Binary files a/programs/develop/ktcc/trunk/bin/lib/libck.a and b/programs/develop/ktcc/trunk/bin/lib/libck.a differ
diff --git a/programs/develop/ktcc/trunk/libc/makefile b/programs/develop/ktcc/trunk/libc/Makefile
similarity index 80%
rename from programs/develop/ktcc/trunk/libc/makefile
rename to programs/develop/ktcc/trunk/libc/Makefile
index 1e4c6b4539..cc383c8538 100644
--- a/programs/develop/ktcc/trunk/libc/makefile
+++ b/programs/develop/ktcc/trunk/libc/Makefile
@@ -1,9 +1,9 @@
 INCLUDE = include
 LIBSFORBUILD = math
 LIBNAME = libck.a
-CC = gcc
+CC = ../bin/kos32-tcc
 CFLAGS = -I$(INCLUDE) -m32 -nostdinc -nostdlib -DGNUC
-DIRS := stdio kolibrisys string stdlib memory math 
+DIRS := stdio memory kolibrisys string stdlib math dlfcn libgen fs
 
 ##############################################################
 #files := $(foreach dir,$(DIRS),$(dir)/$(wildcard $(dir)/*))
@@ -28,3 +28,6 @@ $(asmfiles):
 
 clean:
 	$(doClean)
+
+install:
+	cp $(LIBNAME) ../bin/lib
diff --git a/programs/develop/ktcc/trunk/libc/fs/dir.c b/programs/develop/ktcc/trunk/libc/fs/dir.c
new file mode 100644
index 0000000000..b4a1d73a02
--- /dev/null
+++ b/programs/develop/ktcc/trunk/libc/fs/dir.c
@@ -0,0 +1,64 @@
+#include <stdlib.h>
+#include <dir.h>
+#include <stdbool.h>
+
+#pragma pack(push,1)
+typedef struct {
+    unsigned	p00;
+    unsigned long long	p04;
+    unsigned	p12;
+    unsigned	p16;
+    char		p20;
+    char		*p21;
+} kol_struct70;
+#pragma pack(pop)
+
+int kol_file_70(kol_struct70 *k)
+{
+    asm volatile ("int $0x40"::"a"(70), "b"(k));
+}
+
+bool dir_operations(unsigned char fun_num, char *path)
+{
+    kol_struct70 inf;
+    inf.p00 = fun_num;
+    inf.p04 = 0;
+    inf.p12 = 0;
+    inf.p16 = 0;
+    inf.p20 = 0;
+    inf.p21 = path;
+    if(!kol_file_70(&inf)){
+        return true;
+    }
+    else {
+	    return false;
+    }
+}
+
+char *getcwd(char *buf, unsigned size)
+{
+    if(buf == NULL){
+        buf = malloc(size);
+    }
+    __asm__ __volatile__(
+    "int $0x40"
+    ::"a"(30),"b"(2),"c"(buf), "d"(size));
+    return(buf);
+}
+
+void setcwd(const char* cwd)
+{
+    __asm__ __volatile__(
+    "int $0x40"
+    ::"a"(30),"b"(1),"c"(cwd));
+}
+
+bool rmdir(const char* dir)
+{
+    return dir_operations(8, dir);
+}
+
+bool mkdir(const char* dir)
+{
+    return dir_operations(9, dir);
+}
diff --git a/programs/develop/ktcc/trunk/libc/include/dir.h b/programs/develop/ktcc/trunk/libc/include/dir.h
new file mode 100644
index 0000000000..f22ad7be20
--- /dev/null
+++ b/programs/develop/ktcc/trunk/libc/include/dir.h
@@ -0,0 +1,20 @@
+#ifndef _DIR_H
+#define _DIR_H 
+
+#include <stdbool.h>
+
+#define PATH_MAX 4096
+
+// Get the path to the working directory(if buf is NULL, then memory will be allocated automatically)
+char *getcwd(char *buf, unsigned size);
+
+// Set path to working directory
+void setcwd(const char* cwd);
+
+// Remove directory (returns "true" if successful)
+bool rmdir(const char* dir);
+
+// Create directory (returns "true" if successful)
+bool mkdir(const char* dir);
+
+#endif
diff --git a/programs/develop/ktcc/trunk/samples/build_all.sh b/programs/develop/ktcc/trunk/samples/build_all.sh
index 60c0dc970d..8ef72d69ff 100644
--- a/programs/develop/ktcc/trunk/samples/build_all.sh
+++ b/programs/develop/ktcc/trunk/samples/build_all.sh
@@ -11,4 +11,5 @@
 ../tcc clayer/boxlib.c -lck -lbox -o /tmp0/1/boxlib_ex
 ../tcc clayer/libimg.c -lck -limg -o /tmp0/1/libimg_ex
 ../tcc console/console.c -lck -limg -o /tmp0/1/console
+../tcc dir_example.c -lck -o /tmp0/1/dir_example
 exit
diff --git a/programs/develop/ktcc/trunk/samples/dir_example.c b/programs/develop/ktcc/trunk/samples/dir_example.c
new file mode 100644
index 0000000000..3c56fb8ab4
--- /dev/null
+++ b/programs/develop/ktcc/trunk/samples/dir_example.c
@@ -0,0 +1,21 @@
+#include <dir.h>
+#include <stdio.h>
+#include <stdbool.h>
+#include <stdlib.h>
+int main()
+{
+    char *path=getcwd(NULL, PATH_MAX);
+    printf("Current directory: %s\n", path); 
+    setcwd("/sys"); //String must be null terminated!
+    path=getcwd(NULL, PATH_MAX);
+    printf("Move to the directory: %s\n", path);
+    free(path);
+    if(true==mkdir("TEST1")){
+        puts("Test folder created!");
+        return(0);
+    }
+    else{
+        puts("Error creating folder!");
+        return(-1);
+    }
+}