---

tarfs_common.h File Reference

Go to the source code of this file.

Defines
#define	TARFS_BLKSIZE   512
#define	TARFS_BLKSIZE_BITS   9
#define	TARFS_MAGIC   0x4625
#define	FSNAME   "tarfs"
#define	TARFS_EVAL   ((unsigned long) - 1)
#define	TARFS_THISDIR_FPOS   ((unsigned long) - 2)
#define	TARFS_PARENTDIR_FPOS   ((unsigned long) - 3)
#define	TARFS_ROOT_INO   ((unsigned long) - 4)
#define	TARFS_NUMLENGTH   11
#define	TARFS_CAN_ADD   -1
#define	PRINTD(X)

---

Detailed Description

Contains defines of various constants and debugging macros

Author:

Jaroslav Drazan <jaroslavdrazan@seznam.cz>

Petr Cermak <xgxg@seznam.cz>

Definition in file tarfs_common.h.

---

Define Documentation

#define FSNAME   "tarfs"

Registered name of this fs Definition at line 29 of file tarfs_common.h.

#define PRINTD (  X   )

Definition at line 55 of file tarfs_common.h. Referenced by tarfs_get_new_root_inode(), tarfs_lookup(), tarfs_read_inode(), tarfs_read_super(), tarfs_readdir(), tarfs_readpage(), and tarfs_statfs().

#define TARFS_BLKSIZE   512

Size of one tar block Definition at line 26 of file tarfs_common.h. Referenced by offset_by_name(), offset_by_name2(), pom_read_name(), read_block(), skip_blocks(), symlinkname(), tar_get_root_ino(), tar_length(), tar_lookup(), tar_read_page(), tar_readdir(), tarfs_read_super(), and tarfs_statfs().

#define TARFS_BLKSIZE_BITS   9

No. of bits of size Definition at line 27 of file tarfs_common.h. Referenced by tarfs_read_super().

#define TARFS_CAN_ADD   -1

influences return value of function is_right_prefix() to allow reading/listing files added to tar archive later it's nessery to search the archive to the end, so the function is_right_prefix must return -1 also in case dname doesn't contain fname. So if this macro is set to 0, it's more effective to read dirs, but adding files is not supported to allow reading added files set this macro to -1, otherwise to 0 See also: is_right_prefix() Definition at line 50 of file tarfs_common.h. Referenced by is_right_prefix().

#define TARFS_EVAL   ((unsigned long) - 1)

Error return value when returning unsigned long values Definition at line 30 of file tarfs_common.h. Referenced by find_nolink(), get_root_ino_pom(), oct_to_dec(), offset_by_name(), offset_by_name2(), skip_blocks(), tar_fill_inode(), tar_get_root_ino(), tar_lookup(), tar_read_page(), tar_readdir(), tarfs_lookup(), tarfs_read_super(), tarfs_readdir(), and tarfs_readpage().

#define TARFS_MAGIC   0x4625

Magic number of this filesystem Definition at line 28 of file tarfs_common.h. Referenced by tarfs_read_super(), and tarfs_statfs().

#define TARFS_NUMLENGTH   11

Length of octal number in tar Definition at line 34 of file tarfs_common.h. Referenced by find_nolink(), offset_by_name(), offset_by_name2(), skip_blocks(), symlinkname(), tar_fill_inode(), tar_get_root_ino(), tar_length(), tar_lookup(), and tar_readdir().

#define TARFS_PARENTDIR_FPOS   ((unsigned long) - 3)

Value of filp->f_pos. Means '..' directory Definition at line 32 of file tarfs_common.h. Referenced by tar_readdir().

#define TARFS_ROOT_INO   ((unsigned long) - 4)

Inode number of root directory if not present in tar Definition at line 33 of file tarfs_common.h. Referenced by get_root_ino_pom(), tar_fill_inode(), tar_lookup(), tar_read_page(), tar_readdir(), and tarfs_read_inode().

#define TARFS_THISDIR_FPOS   ((unsigned long) - 2)

Value of filp->f_pos. Means '.' directory Definition at line 31 of file tarfs_common.h. Referenced by tar_readdir().

---