Initial commit

1 files changed, 54 insertions, 0 deletions

diff --git a/defs.h b/defs.h
new file mode 100644
index 0000000..d74abd5
--- /dev/null
+++ b/defs.h
@@ -0,0 +1,54 @@
+#ifndef _DEFS_H
+#define _DEFS_H
+
+/* Gatos */
+/* Parámetros del disco */
+#define BLOCKS 65536
+#define BLOCK_SIZE 512
+#define MDFS_FILENAME "disk.mdfs"
+#define BLOCKPOOL_BLOCKS 64491
+#define INODEPOOL_BLOCKS 1024
+/* Parámetros de la organización lógica del disco */
+/* superblock */
+#define MDFS_SUPER_MAGIC (0x14F5)
+#define SUPERBLOCK_SIZE (1*BLOCK_SIZE)
+/* inode bitmap */
+#define FIB_BLOCKS 4
+#define FIB_SIZE (FIB_BLOCKS*BLOCK_SIZE)
+/* free block bitmap */
+#define FBB_SIZE (16*BLOCK_SIZE)
+/* inode info */
+#define INODE_ENTRIES 16384
+#define INODE_SIZE 32
+#define NAME_LENGTH 26
+#define INODEPOOL_SIZE (1024*BLOCK_SIZE)
+/* Posiciones absolutas de cada una de las secciones del disco */
+#define SUPERBLOCK_OFFSET 0
+#define FIB_OFFSET (SUPERBLOCK_OFFSET+SUPERBLOCK_SIZE)
+#define FBB_OFFSET (FIB_OFFSET+FIB_SIZE)
+#define INODEPOOL_OFFSET (FBB_OFFSET+FBB_SIZE)
+#define BLOCKPOOL_OFFSET (INODEPOOL_OFFSET+INODEPOOL_SIZE)
+
+/* Operaciones FBB */
+#define SET_BIT_0(buf, i) ((buf)[(i)/8]&=~(1u<<(i)%8))
+#define SET_BIT_1(buf, i) ((buf)[(i)/8]|=1<<(i)%8)
+#define GET_BIT(buf, i) ((buf)[(i)/8]>>(i)%8&1)
+
+/* Operaciones varias */
+#ifndef MAX
+#define MAX(a,b) (((a)>(b))?(a):(b))
+#endif
+
+#ifndef MIN
+#define MIN(a,b) (((a)<(b))?(a):(b))
+#endif
+
+#define DIV_CEIL(a,b) (((a)+(b)-1)/(b))
+
+/* No quiero huecos al medio */
+#define PACKED __attribute__((packed))
+
+/* Nos hartamos de poner lo mismo */
+#define NEW_TIME (uint32_t) time(NULL)
+
+#endif