Initial NTFS readonly support code to Syslinux

Basically add the NTFS filesystem structures and also implement
ntfs_fs_init() to only initialize the filesystem metadata and return the
block size in bits.

Signed-off-by: Paulo Alcantara <pcacjr@gmail.com>

1 files changed, 64 insertions, 0 deletions

diff --git a/core/fs/ntfs/ntfs.h b/core/fs/ntfs/ntfs.h
new file mode 100644
index 00000000..b5919a3e
--- /dev/null
+++ b/core/fs/ntfs/ntfs.h
@@ -0,0 +1,64 @@
+/* ----------------------------------------------------------------------- *
+ *
+ *   Copyright 2011 Paulo Alcantara <pcacjr@gmail.com>
+ *
+ *   This program 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, Inc., 53 Temple Place Ste 330,
+ *   Boston MA 02111-1307, USA; either version 2 of the License, or
+ *   (at your option) any later version; incorporated herein by reference.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * ntfs.h - The NTFS filesystem structures
+ */
+
+#ifndef _NTFS_H_
+#define _NTFS_H_
+
+struct ntfs_bpb {
+    uint8_t jmp_boot[3];
+    char oem_name[8];
+    uint16_t sector_size;
+    uint8_t sec_per_clust;
+    uint16_t res_sectors;
+    uint8_t zero_0[3];
+    uint16_t zero_1;
+    uint8_t media;
+    uint16_t zero_2;
+    uint16_t unused_0;
+    uint16_t unused_1;
+    uint32_t unused_2;
+    uint32_t zero_3;
+    uint32_t unused_3;
+    uint64_t total_sectors;
+    uint64_t mft_lclust;
+    uint64_t mft_mirr_lclust;
+    uint8_t clust_per_mft_record;
+    uint8_t unused_4[3];
+    uint8_t clust_per_idx_buf;
+    uint8_t unused_5[3];
+    uint64_t vol_serial;
+    uint32_t unused_6;
+
+    uint8_t pad[428];       /* padding to a sector boundary (512 bytes) */
+} __attribute__((packed));
+
+struct ntfs_sb_info {
+    sector_t mft;                   /* The MFT region */
+    sector_t root;                  /* The root dir region */
+
+    unsigned mft_size;              /* The MFT size in sectors */
+    unsigned mft_record_size;       /* MFT record size in bytes */
+
+    unsigned long long clusters;    /* Total number of clusters */
+
+    unsigned clust_shift;           /* Based on sectors */
+    unsigned clust_byte_shift;      /* Based on bytes */
+    unsigned clust_mask;
+    unsigned clust_size;
+
+} __attribute__((packed));
+
+#endif /* _NTFS_H_ */