| 0,0 → 1,141 |
|---|
| /* Constants of all file system. Some of them are not used here in |
| * current version, but will be used in later versions probably. |
| */ |
| |
| #ifndef _CONST_H |
| #define _CONST_H |
| |
| /* Defined in ../share/base_const.h */ |
| /* |
| #define FALSE 0 |
| #define TRUE 1 |
| #define OK 0 |
| */ |
| |
| #define BLOCK_SIZE 1024 /* # bytes in a disk block */ |
| #define MAJOR 8 /* major device = (dev>>MAJOR) & 0377 */ |
| #define MINOR 0 /* minor device = (dev>>MINOR) & 0377 */ |
| #define BYTE 0377 /* mask for 8 bits */ |
| #define NO_NUM 0x8000 /* used as numerical argument to panic() */ |
| |
| /* Not used here. */ |
| #define NR_SEGS 3 /* # segments per process */ |
| #define T 0 /* proc[i].mem_map[T] is for text */ |
| #define D 1 /* proc[i].mem_map[D] is for data */ |
| #define S 2 /* proc[i].mem_map[S] is for stack */ |
| |
| #define MAX(a, b) ((a) > (b) ? (a) : (b)) |
| #define MIN(a, b) ((a) < (b) ? (a) : (b)) |
| |
| //#define FS_PROC_NR SERVICE_FS /* process number of file system */ |
| |
| #define I_NOT_ALLOC 0000000 /* this inode is free */ |
| |
| #define I_TYPE 0170000 /* this field gives inode type */ |
| #define I_REGULAR 0100000 /* regular file, not dir or special */ |
| #define I_DIRECTORY 0040000 /* file is a directory */ |
| #define I_BLOCK_SPECIAL 0060000 /* block special file */ |
| #define I_CHAR_SPECIAL 0020000 /* character special file */ |
| |
| #define MAX_FILE_POS ((off_t) 037777777777) /* largest legal file offset */ |
| |
| #define R_BIT 0000004 /* Rwx protection bit */ |
| #define W_BIT 0000002 /* rWx protection bit */ |
| #define X_BIT 0000001 /* rwX protection bit */ |
| |
| #define NO_BLOCK ((block_num_t) 0) /* absence of a block number */ |
| #define NO_ZONE ((zone_t) 0) /* absence of a zone number */ |
| #define NO_DEV ((dev_t) 0) /* absence of a device numb */ |
| |
| |
| /* Tables sizes. */ |
| #define V1_NR_DZONES 7 /* # direct zone numbers in a V1 inode */ |
| #define V1_NR_TZONES 9 /* total # zone numbers in a V1 inode */ |
| #define V2_NR_DZONES 7 /* # direct zone numbers in a V2 inode */ |
| #define V2_NR_TZONES 10 /* total # zone numbers in a V2 inode */ |
| |
| #define NR_FILPS 128 /* # slots in filp table */ |
| #define NR_INODES 64 /* # slots in "in core" inode table */ |
| |
| |
| /* The type of sizeof may be (unsigned) long. Use the following macro for |
| * taking the sizes of small objects so that there are no surprises like |
| * (small) long constants being passed to routines expecting an int. |
| */ |
| #define usizeof(t) ((unsigned) sizeof(t)) |
| |
| |
| /* File system macros corresponding with given versions. */ |
| #define SUPER_MAGIC 0x137F /* magic number for V1 file systems */ |
| #define SUPER_MAGIC2 0x138F /* magic number for V1 file systems - 30 char names */ |
| #define SUPER_V2 0x2468 /* magic number for V2 file systems */ |
| #define SUPER_V2E 0x2478 /* magic number for V2 file systems - 30 char names */ |
| |
| #define TOTAL_VERSIONS 2 /* number of versions of file system */ |
| |
| #define V1 1 /* version number of V2 file systems */ |
| #define V2 2 /* version number of V2 file systems */ |
| |
| #define LOOK_UP 0 /* tells search_dir to lookup string */ |
| #define IS_EMPTY 3 /* tells search_dir to ret. OK or ENOTEMPTY */ |
| |
| #define BYTE_SWAP 0 /* tells conv2/conv4 to swap bytes */ |
| #define DONT_SWAP 1 /* tells conv2/conv4 not to swap bytes */ |
| |
| #define END_OF_FILE (-104) /* eof detected */ |
| |
| #define ROOT_INODE 1 /* inode number for root directory */ |
| #define BOOT_BLOCK ((block_num_t) 0) /* block number of boot block */ |
| #define SUPER_BLOCK ((block_num_t) 1) /* block number of super block */ |
| |
| /* For normal version. */ |
| #define DIR_ENTRY_SIZE usizeof (direct_t) /* # bytes/dir entry */ |
| #define NR_DIR_ENTRIES (BLOCK_SIZE/DIR_ENTRY_SIZE) /* # dir entries/blk */ |
| |
| /* For extended version. */ |
| #define DIR_ENTRY_SIZE_EX usizeof (directex_t) /* # bytes/dir entry */ |
| #define NR_DIR_ENTRIES_EX (BLOCK_SIZE/DIR_ENTRY_SIZE_EX) /* # dir entries/blk */ |
| |
| #define SUPER_SIZE usizeof (super_block_t) /* super_block size */ |
| |
| |
| /* Derived sizes pertaining to the V1 file system. */ |
| #define V1_ZONE_NUM_SIZE usizeof (zone1_t) /* # bytes in V1 zone */ |
| #define V1_INODE_SIZE usizeof (d1_inode_t) /* bytes in V1 dsk ino */ |
| #define V1_INDIRECTS (BLOCK_SIZE/V1_ZONE_NUM_SIZE) /* # zones/indir block */ |
| #define V1_INODES_PER_BLOCK (BLOCK_SIZE/V1_INODE_SIZE)/* # V1 dsk inodes/blk */ |
| |
| /* Derived sizes pertaining to the V2 file system. */ |
| #define V2_ZONE_NUM_SIZE usizeof (zone_t) /* # bytes in V2 zone */ |
| #define V2_INODE_SIZE usizeof (d2_inode_t) /* bytes in V2 dsk ino */ |
| #define V2_INDIRECTS (BLOCK_SIZE/V2_ZONE_NUM_SIZE) /* # zones/indir block */ |
| #define V2_INODES_PER_BLOCK (BLOCK_SIZE/V2_INODE_SIZE)/* # V2 dsk inodes/blk */ |
| |
| |
| /* Filesystem supported operations. */ |
| #define FS_NEW_CONSUMER (FIRST_USER_METHOD + 50) /* this is not file system system call */ |
| |
| #define FS_BASE FIRST_USER_METHOD |
| #define FS_NOSYS (0 + FS_BASE) |
| #define FS_OPEN (1 + FS_BASE) |
| #define FS_SEEK (2 + FS_BASE) |
| #define FS_READ (3 + FS_BASE) |
| #define FS_CLOSE (4 + FS_BASE) |
| #define FS_CHDIR (5 + FS_BASE) |
| #define FS_STAT (6 + FS_BASE) |
| #define FS_FSTAT (7 + FS_BASE) |
| #define FS_DSUM (8 + FS_BASE) |
| #define FS_READENTRY (9 + FS_BASE) |
| |
| #define FS_CALLS 10 |
| |
| #define FS_MIN (FS_BASE) |
| #define FS_MAX (FS_BASE + FS_CALLS) |
| |
| #define FS_IN_RANGE(VAL) ((FS_MIN <= VAL && VAL < FS_MAX)? TRUE:FALSE) |
| |
| /* Number of attempts the FS will try to connect to each defined services. */ |
| #define CON_CONN_ATTEMPTS 1000 |
| #define RD_CONN_ATTEMPTS 1000 |
| |
| #endif /* _CONST_H */ |