Start on ram backed filesystemHEADmaster

2 files changed, 37 insertions, 0 deletions

diff --git a/os/filesystem/ramfs.c b/os/filesystem/ramfs.c
new file mode 100644
index 0000000..0c0fdff
--- /dev/null
+++ b/os/filesystem/ramfs.c
@@ -0,0 +1,27 @@
+#include "ramfs.h"
+#include "../../kernel/gpu/text_mode/display.h"
+
+#include "../stdlib/sdtlib.h"
+
+#define RAMDISK_SIZE 102400 // 100 blocks
+#define BLOCK_SIZE 1024
+#define MAX_FILES 128 // fixed size until mem management done
+
+unsigned char ramdisk[RAMDISK_SIZE];
+
+File_t files[MAX_FILES];
+int tip_file_idx = -1;
+
+File_t* ramfs_list_files() {
+  return files;
+}
+
+int ramfs_get_tip_file_idx() {
+  return tip_file_idx;
+}
+
+File_t ramfs_create_file(unsigned char *filename) {
+  int i = ++tip_file_idx;
+  strcpy(filename, files[i].name);
+  return files[i];
+}
diff --git a/os/filesystem/ramfs.h b/os/filesystem/ramfs.h
new file mode 100644
index 0000000..c0dd147
--- /dev/null
+++ b/os/filesystem/ramfs.h
@@ -0,0 +1,10 @@
+typedef struct
+{
+  char name[128]; // 128 max filename lentgh
+  int start_addr;
+  int end_addr;
+} File_t;
+
+File_t ramfs_create_file(unsigned char * filename);
+File_t* ramfs_list_files();
+int ramfs_get_tip_file_idx();
\ No newline at end of file