i86/mtx-16-bit/mtx/samples/LAB5_FS/type.h

   1 typedef unsigned long  u32;
   2 typedef unsigned short u16;
   3 typedef unsigned char  u8;
   4
   5 typedef unsigned short ushort;
   6 typedef unsigned long  ulong;
   7
   8 #define NULL      0
   9 #define NPROC     9
  10 #define SSIZE  512
  11 #define NQUEUE NPROC    // at most NPROC ready queues
  12
  13 #define FREE      0    /* proc statuc */
  14 #define READY     1
  15 #define SLEEP     2
  16 #define ZOMBIE    3
  17 #define KILLED    4
  18 #define BLOCK     5
  19
  20 typedef struct ext2_super_block {
  21         u32     s_inodes_count;         /* Inodes count */
  22         u32     s_blocks_count;         /* Blocks count */
  23         u32     s_r_blocks_count;       /* Reserved blocks count */
  24         u32     s_free_blocks_count;    /* Free blocks count */
  25         u32     s_free_inodes_count;    /* Free inodes count */
  26         u32     s_first_data_block;     /* First Data Block */
  27         u32     s_log_block_size;       /* Block size */
  28         u32     s_log_frag_size;        /* Fragment size */
  29         u32     s_blocks_per_group;     /* # Blocks per group */
  30         u32     s_frags_per_group;      /* # Fragments per group */
  31         u32     s_inodes_per_group;     /* # Inodes per group */
  32         u32     s_mtime;                /* Mount time */
  33         u32     s_wtime;                /* Write time */
  34         u16     s_mnt_count;            /* Mount count */
  35         u16     s_max_mnt_count;        /* Maximal mount count */
  36         u16     s_magic;                /* Magic signature */
  37         u16     s_state;                /* File system state */
  38         u16     s_errors;               /* Behaviour when detecting errors */
  39 } SUPER;
  40
  41 typedef struct ext2_group_desc
  42 {
  43         u32     bg_block_bitmap;        /* Blocks bitmap block */
  44         u32     bg_inode_bitmap;        /* Inodes bitmap block */
  45         u32     bg_inode_table;         /* Inodes table block */
  46         u16     bg_free_blocks_count;   /* Free blocks count */
  47         u16     bg_free_inodes_count;   /* Free inodes count */
  48         u16     bg_used_dirs_count;     /* Directories count */
  49         u16     bg_pad;
  50         u32     bg_reserved[3];
  51 } GD;
  52
  53 typedef struct ext2_inode {
  54         u16     i_mode;         /* File mode */
  55         u16     i_uid;          /* Owner Uid */
  56         u32     i_size;         /* Size in bytes */
  57         u32     i_atime;        /* Access time */
  58         u32     i_ctime;        /* Creation time */
  59         u32     i_mtime;        /* Modification time */
  60         u32     i_dtime;        /* Deletion Time */
  61         u16     i_gid;          /* Group Id */
  62         u16     i_links_count;  /* Links count */
  63         u32     i_blocks;       /* Blocks count */
  64         u32     i_flags;        /* File flags */
  65         u32     dummy;
  66         u32     i_block[15];    /* Pointers to blocks */
  67         u32     pad[7];         /* inode size MUST be 128 bytes */
  68 } INODE;
  69
  70 typedef struct ext2_dir_entry_2 {
  71         u32     inode;                  /* Inode number */
  72         u16     rec_len;                /* Directory entry length */
  73         u8      name_len;               /* Name length */
  74         u8      file_type;
  75         char    name[255];              /* File name */
  76 } DIR;
  77
  78 #define NMINODES          20
  79 #define NMOUNT             4
  80 #define NFD               10
  81 #define NOFT              20
  82 #define NPIPES            20
  83 #define PSIZE            256
  84
  85 #define READ       0
  86 #define WRITE      1
  87 #define RW         2
  88 #define APPEND     3
  89 #define READ_PIPE  4
  90 #define WRITE_PIPE 5
  91
  92 typedef struct Oft{
  93   int   mode;
  94   int   refCount;
  95   struct Minode *inodeptr;
  96   struct pipe *pipe_ptr;
  97   long  offset;
  98   char  name[32];
  99 } OFT;
 100
 101 typedef struct Minode{
 102   INODE    INODE;
 103   ushort   dev, ino;
 104   ushort   refCount;
 105   ushort   dirty;
 106   ushort   mounted;
 107   struct Mount *mountptr;
 108   char     name[32];
 109 } MINODE;
 110
 111
 112 typedef struct Mount{
 113         int    ninodes;
 114         int    nblocks;
 115         int    dev, busy;
 116         struct Minode *mounted_inode;
 117         char   name[32];
 118         char   mount_name[32];
 119 } MOUNT;
 120
 121 typedef struct pipe{
 122         char  buf[PSIZE];
 123         int   head, tail, hasData, hasRoom;
 124         OFT   *read, *write;
 125         int   busy;
 126 }PIPE;
 127
 128
 129 typedef struct stat {
 130   ushort st_dev;                /* major/minor device number */
 131   ushort st_ino;                /* i-node number */
 132   ushort st_mode;               /* file mode, protection bits, etc. */
 133   ushort st_nlink;              /* # links; TEMPORARY HACK: should be nlink_t*/
 134   ushort st_uid;                        /* uid of the file's owner */
 135   ushort st_gid;                /* gid; TEMPORARY HACK: should be gid_t */
 136   ushort st_rdev;
 137   long   st_size;               /* file size */
 138   long   st_atime;              /* time of last access */
 139   long   st_mtime;              /* time of last data modification */
 140   long   st_ctime;              /* time of last file status change */
 141 } STAT;
 142
 143 typedef struct stty TTY;
 144
 145 #define SSIZE 512
 146
 147 typedef struct proc{
 148         struct  proc *next;
 149         int    *ksp;
 150         int     uss,usp;
 151
 152         int     uid;
 153         int     gid;
 154         int     pid;
 155         int     ppid;
 156   struct proc *parent;
 157
 158         int     exitValue;
 159         int     status;
 160         int     pri;           /* scheduling priority */
 161         char    name[16];      /* name string */
 162         int     event;
 163
 164         OFT    *fd[NFD];       /* file descriptors */
 165         MINODE *cwd;           /* CWD */
 166         char    tty[16];        /* opened /dev/ttyXX */
 167         int     time;
 168   int     signal;
 169   int     sig[10];
 170   struct semaphore *sem;       // ptr to semaphore currently BLOCKed on
 171   ushort  segment, tsize, dsize, size; // memory image location & size
 172
 173   int kstack[SSIZE];
 174 }PROC;
 175
 176 /* Default dir and regulsr file modes */
 177 #define DIR_MODE          0040777
 178 #define FILE_MODE         0100644
 179 #define SUPER_MAGIC       0xEF53
 180 #define SUPER_USER        0