sdutil Initialize CHS too (some BIOSes dont like it), libfat Add update callback function

libfat/_fatctx.h

@@ -1,6 +1,8 @@
 #ifndef _KERNEL_FS_FATFS_CTX_H
 #define _KERNEL_FS_FATFS_CTX_H
 
+#include <stddef.h>
+
 struct fatfs_ctx {
   FL_FILE _files[FATFS_MAX_OPEN_FILES];
   int _filelib_init;
@@ -9,6 +11,7 @@ struct fatfs_ctx {
   struct fat_list _open_file_list;
   struct fat_list _free_file_list;
   char device_name[0x100];
+  void (*update_cb) (size_t sector, size_t sector_count);
 };
 
 #endif // _KERNEL_FS_FATFS_CTX_H

libfat/libfat.c

@@ -41,6 +41,9 @@ static int fat_diskio_read (struct fatfs_ctx* ctx, uint32_t sector, uint8_t* buf
                         NULL)) < 0)
     return 0;
 
+  if (ctx->update_cb != NULL)
+    ctx->update_cb (phys_sector, phys_sector_count);
+
   return 1;
 }
 
@@ -65,18 +68,20 @@ static int fat_diskio_write (struct fatfs_ctx* ctx, uint32_t sector, uint8_t* bu
                         NULL)) < 0)
     return 0;
 
+  if (ctx->update_cb != NULL)
+    ctx->update_cb (phys_sector, phys_sector_count);
+
   return 1;
 }
 
 int fat_format_drive (struct fatfs_ctx* ctx, const char* device_key, int fs_type) {
-  memset (ctx, 0, sizeof (*ctx));
-  memcpy (ctx->device_name, device_key, min (sizeof (ctx->device_name) - 1, strlen (device_key)));
+  memcpy (ctx->device_name, device_key, strlen (device_key));
+
+  int r = -1;
 
   size_t total_size = 0;
-  device_do (device_key, XDRV_GET_SIZE, &total_size, NULL, NULL, NULL);
-
-  if (total_size == 0)
-    return -ST_NOT_FOUND;
+  if ((r = device_do (device_key, XDRV_GET_SIZE, &total_size, NULL, NULL, NULL)) < 0)
+    return r;
 
   size_t sectors = ((total_size + FAT_SECTOR_SIZE) / FAT_SECTOR_SIZE);
 
@@ -84,7 +89,7 @@ int fat_format_drive (struct fatfs_ctx* ctx, const char* device_key, int fs_type
   ctx->_fs.disk_io.read_media = &fat_diskio_read;
   ctx->_fs.disk_io.write_media = &fat_diskio_write;
 
-  int r = -1;
+  r = -1;
 
   switch (fs_type) {
   case FS_FAT16: