reactos/drivers/fs/minix/minix.h

   1 #include <ddk/ntddk.h>
   2 #include <ddk/ntifs.h>
   3
   4 #define MINIX_ROOT_INO 1
   5
   6 /* Not the same as the bogus LINK_MAX in <linux/limits.h>. Oh well. */
   7 #define MINIX_LINK_MAX  250
   8
   9 #define MINIX_I_MAP_SLOTS       8
  10 #define MINIX_Z_MAP_SLOTS       64
  11 #define MINIX_SUPER_MAGIC       0x137F          /* original minix fs */
  12 #define MINIX_SUPER_MAGIC2      0x138F          /* minix fs, 30 char names */
  13 #define MINIX2_SUPER_MAGIC      0x2468          /* minix V2 fs */
  14 #define MINIX2_SUPER_MAGIC2     0x2478          /* minix V2 fs, 30 char names */
  15 #define MINIX_VALID_FS          0x0001          /* Clean fs. */
  16 #define MINIX_ERROR_FS          0x0002          /* fs has errors. */
  17
  18 #define MINIX_INODES_PER_BLOCK ((BLOCKSIZE)/(sizeof (struct minix_inode)))
  19 #define MINIX2_INODES_PER_BLOCK ((BLOCKSIZE)/(sizeof (struct minix2_inode)))
  20
  21 #define MINIX_V1                0x0001          /* original minix fs */
  22 #define MINIX_V2                0x0002          /* minix V2 fs */
  23
  24
  25 /*
  26  * This is the original minix inode layout on disk.
  27  * Note the 8-bit gid and atime and ctime.
  28  */
  29 struct minix_inode {
  30         unsigned short int i_mode;
  31         unsigned short int i_uid;
  32         unsigned long i_size;
  33         unsigned long i_time;
  34         unsigned char  i_gid;
  35         unsigned char  i_nlinks;
  36         unsigned short int i_zone[9];
  37 };
  38
  39 /*
  40  * The new minix inode has all the time entries, as well as
  41  * long block numbers and a third indirect block (7+1+1+1
  42  * instead of 7+1+1). Also, some previously 8-bit values are
  43  * now 16-bit. The inode is now 64 bytes instead of 32.
  44  */
  45 struct minix2_inode {
  46         unsigned short int i_mode;
  47         unsigned short int i_nlinks;
  48         unsigned short int i_uid;
  49         unsigned short int i_gid;
  50         unsigned long i_size;
  51         unsigned long i_atime;
  52         unsigned long i_mtime;
  53         unsigned long i_ctime;
  54         unsigned long i_zone[10];
  55 };
  56
  57 /*
  58  * minix super-block data on disk
  59  */
  60 struct minix_super_block {
  61         unsigned short int s_ninodes;
  62         unsigned short int s_nzones;
  63         unsigned short int s_imap_blocks;
  64         unsigned short int s_zmap_blocks;
  65         unsigned short int s_firstdatazone;
  66         unsigned short int s_log_zone_size;
  67         unsigned long s_max_size;
  68         unsigned short int s_magic;
  69         unsigned short int s_state;
  70         unsigned long s_zones;
  71 };
  72
  73 struct minix_dir_entry {
  74         unsigned short int inode;
  75         char name[0];
  76 };
  77 #define MINIX_DIR_ENTRY_SIZE (sizeof(struct minix_dir_entry)+30)
  78
  79 BOOLEAN MinixReadSector(IN PDEVICE_OBJECT pDeviceObject,
  80                         IN ULONG        DiskSector,
  81                         IN PVOID        Buffer);
  82 BOOLEAN MinixWriteSector(IN PDEVICE_OBJECT pDeviceObject,
  83                         IN ULONG        DiskSector,
  84                         IN PVOID        Buffer);
  85
  86 #define BLOCKSIZE (1024)
  87
  88 //extern PDRIVER_OBJECT DriverObject;
  89
  90 typedef struct
  91 {
  92    PDEVICE_OBJECT AttachedDevice;
  93    struct minix_inode root_inode;
  94    char superblock_buf[BLOCKSIZE];
  95    struct minix_super_block* sb;
  96    PFILE_OBJECT FileObject;
  97 } MINIX_DEVICE_EXTENSION, *PMINIX_DEVICE_EXTENSION;
  98
  99 typedef struct
 100 {
 101    struct minix_inode inode;
 102 } MINIX_FSCONTEXT, *PMINIX_FSCONTEXT;
 103
 104 NTSTATUS STDCALL MinixCreate(PDEVICE_OBJECT DeviceObject, PIRP Irp);
 105 NTSTATUS STDCALL MinixClose(PDEVICE_OBJECT DeviceObject, PIRP Irp);
 106 NTSTATUS STDCALL MinixWrite(PDEVICE_OBJECT DeviceObject, PIRP Irp);
 107 NTSTATUS STDCALL MinixRead(PDEVICE_OBJECT DeviceObject, PIRP Irp);
 108 NTSTATUS STDCALL MinixDirectoryControl(PDEVICE_OBJECT DeviceObject, PIRP Irp);
 109
 110 ULONG MinixNewInode(PDEVICE_OBJECT Volume,
 111                     MINIX_DEVICE_EXTENSION* DeviceExt,
 112                     struct minix_inode* new_inode);
 113 NTSTATUS MinixWriteInode(PDEVICE_OBJECT Volume,
 114                          MINIX_DEVICE_EXTENSION* DeviceExt,
 115                          ULONG ino,
 116                          struct minix_inode* result);
 117 NTSTATUS MinixReadInode(PDEVICE_OBJECT DeviceObject,
 118                         MINIX_DEVICE_EXTENSION* DeviceExt,
 119                         ULONG ino,
 120                         struct minix_inode* result);
 121 NTSTATUS MinixDeleteInode(PDEVICE_OBJECT Volume,
 122                           MINIX_DEVICE_EXTENSION* DeviceExt,
 123                           ULONG ino);
 124
 125 NTSTATUS MinixReadBlock(PDEVICE_OBJECT DeviceObject,
 126                         PMINIX_DEVICE_EXTENSION DeviceExt,
 127                         struct minix_inode* inode,
 128                         ULONG FileOffset,
 129                         PULONG DiskOffset);
 130
 131 BOOLEAN MinixReadPage(PDEVICE_OBJECT DeviceObject,
 132                       ULONG Offset,
 133                       PVOID Buffer);