ext2-inode.h

用于汇编领域的,运用于OS的MAIN函数.基于硬件基础的源代码

#ifndef EXT2INODE_H
#define EXT2INODE_H
// Ext2Inode
#define EXT2_N_BLOCKS 15
#define EXT2_INODE_SIZE 128
#define EXT2_INODES_PER_BLOCK (BLKSIZE/EXT2_INODE_SIZE)
#define EXT2_INODE_TABLE_LOCATION 5  // starting block for inode table in 1.44
                                     // floppy disk
struct Ext2Inode { // each inode has 128 bytes.
   unsigned short i_mode;
   unsigned short i_uid;
   unsigned long i_size;
   unsigned long i_atime;
   unsigned long i_ctime;
   unsigned long i_mtime;
   unsigned long i_dtime;
   unsigned short i_gid;
   unsigned short i_links_count;
   unsigned long i_blocks;
   unsigned long i_flags;
   union {
      struct{
	     unsigned long l_i_reserved1;
      } linux1;
	  struct{
	     unsigned long h_i_translator;
	  } hurd1;
	  struct{
	     unsigned long m_i_reserved1;
	  } masix1;
   } osd1;  // OS dependent 1
   unsigned long i_block[EXT2_N_BLOCKS]; // block location
   unsigned long i_generation; // file version (for NFS)
   unsigned long i_file_acl;
   unsigned long i_dir_acl;
   unsigned long i_faddr; // fragment address
   union {
      struct{
	     char l_i_frag; // fragment number
		 char l_i_fsize; // fragment size
         unsigned short i_pad1;
         unsigned short l_i_uid_high;
         unsigned short i_i_gid_high;
	     unsigned long l_i_reserved2;
      } linux2;
	  struct{
	     char h_i_frag; // fragment number
		 char h_i_fsize; // fragment size
         unsigned short h_i_mode_high;
         unsigned short h_i_uid_high;
         unsigned short h_i_gid_high;
	     unsigned long h_i_author;
	  } hurd2;
	  struct{
	     char m_i_frag; // fragment number
		 char m_i_fsize; // fragment size
         unsigned short m_pad1;
	     unsigned long m_i_reserved2i[2];
	  } masix2;
   } osd2;  // OS dependent 2 

/*
   short ino;
   short num_blk; //number of blocks assigned to this inode
   long blk[MAX_INODE_BLK]; // max 7 blocks per file
   */
};
/*
struct ITable{ // 16 inodes in inode table
   struct Inode arr[MAX_INODE_ITABLE];
};
*/
#endif