f984dbba70
. move mfs-specific struct, constants to mfs/, so mfs-specific, on-disk format structs and consts are fully isolated from generic structs and functions . removes de and readfs utils
52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
/* rawfs.h - Raw Minix file system support. Author: Kees J. Bot
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*
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* off_t r_super(int *block_size);
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* Initialize variables, returns the size of a valid Minix
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* file system blocks, but zero on error.
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*
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* void r_stat(ino_t file, struct stat *stp);
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* Return information about a file like stat(2) and
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* remembers file for the next two calls.
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*
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* off_t r_vir2abs(off_t virblockno);
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* Translate virtual block number in file to absolute
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* disk block number. Returns 0 if the file contains
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* a hole, or -1 if the block lies past the end of file.
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*
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* ino_t r_readdir(char *name);
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* Return next directory entry or 0 if there are no more.
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* Returns -1 and sets errno on error.
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*
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* ino_t r_lookup(ino_t cwd, const char *path);
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* A utility function that translates a pathname to an
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* inode number. It starts from directory "cwd" unless
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* path starts with a '/', then from ROOT_INO.
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* Returns 0 and sets errno on error.
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*
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* One function needs to be provided by the outside world:
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*
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* void readblock(off_t blockno, char *buf, int block_size);
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* Read a block into the buffer. Outside world handles
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* errors.
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*/
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#ifndef INC_RAWFS_H
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#define INC_RAWFS_H
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#include <minix/dirent.h>
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#include <servers/mfs/mfsdir.h>
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#define ROOT_INO ((ino_t) 1) /* Inode nr of root dir. */
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extern off_t r_super(int *);
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extern void r_stat(Ino_t file, struct stat *stp);
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extern off_t r_vir2abs(off_t virblockno);
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extern ino_t r_readdir(char *name);
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extern ino_t r_lookup(Ino_t cwd, const char *path);
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/*
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* $PchId: rawfs.h,v 1.4 1996/04/19 08:16:36 philip Exp $
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*/
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#endif
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