1 files changed, 0 insertions, 144 deletions

diff --git a/src/kernel/fs.c b/src/kernel/fs.c
deleted file mode 100644
index 0d51c22..0000000
--- a/src/kernel/fs.c
+++ /dev/null
@@ -1,144 +0,0 @@
-#include <stdint.h>
-#include "fs.h"
-#include "ata.h"
-#include "fat.h"
-#include <stdbool.h>
-#include "panic.h"
-#include "util.h"
-
-#define MAX_HANDLES 32
-#define FILE_BUFFER(h) ((void *)(0x0002be00 + (h << 9)))
-#define HANDLE(h) ((handles - 1)[h])
-#define HEAD(h) (FILE_BUFFER(h) + HANDLE(h).seek % 512)
-
-enum {
-  FH_DIRTY     = 0x01,
-  FH_NO_WRITE  = 0x02,
-  FH_NO_EXPAND = 0x04,
-  FH_ROOT      = 0x08
-};
-
-struct handle_info {
-  uint16_t first_cluster;
-  uint16_t loaded_cluster;
-  uint32_t seek;
-  uint32_t length;
-  uint8_t flags;
-};
-
-struct handle_info handles[MAX_HANDLES];
-
-void clear_fs_handles() {
-  struct handle_info *f = handles;
-  while (f < handles + MAX_HANDLES)
-    (f++)->first_cluster = 0;
-}
-
-fs_handle next_handle() {
-  fs_handle r = 0;
-  while (HANDLE(++r).first_cluster)
-    if (r == MAX_HANDLES)
-      return 0;
-  return r;
-}
-
-void write_buffer(fs_handle handle) {
-  HANDLE(handle).flags &= ~FH_DIRTY;
-  if (HANDLE(handle).flags & FH_ROOT)
-    write_sectors(HANDLE(handle).loaded_cluster, 1, FILE_BUFFER(handle));
-  else
-    write_sectors(CTOS(HANDLE(handle).loaded_cluster), 1, FILE_BUFFER(handle));
-}
-
-void read_buffer(fs_handle handle) {
-  if (HANDLE(handle).flags & FH_DIRTY)
-    write_buffer(handle);
-  uint16_t s = HANDLE(handle).seek >> 9;
-  if (HANDLE(handle).flags & FH_ROOT) {
-    HANDLE(handle).loaded_cluster = HANDLE(handle).first_cluster + s;
-    read_sectors(HANDLE(handle).first_cluster + s, 1, FILE_BUFFER(handle));
-  }
-  else {
-    uint16_t c = HANDLE(handle).first_cluster;
-    while (s--)
-      c = FAT[c];
-    HANDLE(handle).loaded_cluster = c;
-    read_sectors(CTOS(c), 1, FILE_BUFFER(handle));
-  }
-}
-
-fs_handle fs_open(uint8_t *path) {
-  fs_handle next = next_handle();
-  if (!next)
-    return 0;
-  struct directory_entry e;
-  if (get_entry(path, &e))
-    return 0;
-  HANDLE(next).first_cluster = e.first_cluster;
-  HANDLE(next).seek = 0;
-  HANDLE(next).length = e.length;
-  HANDLE(next).flags = (e.attrib & FA_READ_ONLY ? FH_NO_WRITE  : 0) |
-                       (e.attrib & FA_SYSTEM    ? FH_NO_EXPAND : 0);
-  read_buffer(next);
-  return next;
-}
-
-fs_handle fs_open_root() {
-  fs_handle next = next_handle();
-  if (!next)
-    return 0;
-  HANDLE(next).first_cluster = FAT_INFO->reserved_sectors + FAT_INFO->sectors_per_fat;
-  HANDLE(next).seek = 0;
-  HANDLE(next).length = FAT_INFO->root_entries * 32;
-  HANDLE(next).flags = FH_NO_EXPAND | FH_ROOT;
-  read_buffer(next);
-  return next;
-}
-
-int32_t fs_seek(fs_handle handle, int32_t by) {
-  uint32_t old = HANDLE(handle).seek;
-  uint32_t to = -by > old ? 0 : old + by > HANDLE(handle).length ? HANDLE(handle).length : old + by;
-  HANDLE(handle).seek = to;
-  if ((to ^ old) & 0xfe00)
-    read_buffer(handle);
-  return to - old;
-}
-
-uint32_t fs_read(fs_handle handle, uint32_t max, void *buffer) {
-  max = HANDLE(handle).seek + max > HANDLE(handle).length ? HANDLE(handle).length - HANDLE(handle).seek : max;
-  uint32_t left = max, eos = 512 - (HANDLE(handle).seek & 0x1ff);
-  if (left < eos) {
-    memcpy(buffer, FILE_BUFFER(handle) + (HANDLE(handle).seek & 0x1ff), left);
-    HANDLE(handle).seek += left;
-    return max;
-  }
-  memcpy(buffer, FILE_BUFFER(handle) + (HANDLE(handle).seek & 0x1ff), eos);
-  left -= eos;
-  buffer += eos;
-  HANDLE(handle).seek += eos;
-  while (left >= 512) {
-    read_buffer(handle);
-    memcpy(buffer, FILE_BUFFER(handle), 512);
-    left -= 512;
-    buffer += 512;
-    HANDLE(handle).seek += 512;
-  }
-  if (left) {
-    read_buffer(handle);
-    memcpy(buffer, FILE_BUFFER(handle), left);
-    HANDLE(handle).seek += left;
-  }
-  return max;
-}
-
-uint32_t fs_write(fs_handle handle, uint32_t max, void *buffer) {
-  if (HANDLE(handle).flags & FH_NO_WRITE)
-    return 0;
-  panic("Not implemented (fs_write).");
-}
-
-void fs_close(fs_handle handle) {
-  if (HANDLE(handle).flags & FH_DIRTY)
-    write_buffer(handle);
-  HANDLE(handle).first_cluster = 0;
-}
\ No newline at end of file