minix/tests/fs/puffs/h_dtfs/dtfs.h

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/* $NetBSD: dtfs.h,v 1.2 2010/07/14 13:09:52 pooka Exp $ */
/*
* Copyright (c) 2006 Antti Kantee. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef DTFS_H_
#define DTFS_H_
#include <sys/types.h>
#include <puffs.h>
PUFFSOP_PROTOS(dtfs);
int dtfs_domount(struct puffs_usermount *, const char *);
#define DTFS_BLOCKSHIFT (12)
#define DTFS_BLOCKSIZE (1<<DTFS_BLOCKSHIFT)
#define ROUNDUP(a,b) ((a) & ((b)-1))
#define BLOCKNUM(a,b) (((a) & ~((1<<(b))-1)) >> (b))
struct dtfs_fid;
struct dtfs_mount {
ino_t dtm_nextfileid; /* running number for file id */
size_t dtm_fsizes; /* sum of file sizes in bytes */
fsfilcnt_t dtm_nfiles; /* number of files */
LIST_HEAD(, dtfs_poll) dtm_pollent;
int dtm_needwakeup;
vm_prot_t dtm_allowprot;
};
struct dtfs_file {
union {
struct {
uint8_t **blocks;
size_t numblocks;
size_t datalen;
} reg;
struct {
struct puffs_node *dotdot;
LIST_HEAD(, dtfs_dirent) dirents;
} dir;
struct {
char *target;
} link;
} u;
#define df_blocks u.reg.blocks
#define df_numblocks u.reg.numblocks
#define df_datalen u.reg.datalen
#define df_dotdot u.dir.dotdot
#define df_dirents u.dir.dirents
#define df_linktarget u.link.target
};
struct dtfs_dirent {
struct puffs_node *dfd_node;
struct puffs_node *dfd_parent;
char *dfd_name;
size_t dfd_namelen;
LIST_ENTRY(dtfs_dirent) dfd_entries;
};
struct dtfs_fid {
struct puffs_node *dfid_addr;
/* best^Wsome-effort extra sanity check */
ino_t dfid_fileid;
u_long dfid_gen;
};
#define DTFS_FIDSIZE (sizeof(struct dtfs_fid))
struct dtfs_poll {
struct puffs_cc *dp_pcc;
LIST_ENTRY(dtfs_poll) dp_entries;
};
struct puffs_node * dtfs_genfile(struct puffs_node *,
const struct puffs_cn *, enum vtype);
struct dtfs_file * dtfs_newdir(void);
struct dtfs_file * dtfs_newfile(void);
struct dtfs_dirent * dtfs_dirgetnth(struct dtfs_file *, int);
struct dtfs_dirent * dtfs_dirgetbyname(struct dtfs_file *,
const char *, size_t);
void dtfs_nukenode(struct puffs_node *, struct puffs_node *,
const char *, size_t);
void dtfs_freenode(struct puffs_node *);
void dtfs_setsize(struct puffs_node *, off_t);
void dtfs_adddent(struct puffs_node *, struct dtfs_dirent *);
void dtfs_removedent(struct puffs_node *, struct dtfs_dirent *);
void dtfs_baseattrs(struct vattr *, enum vtype, ino_t);
void dtfs_updatetimes(struct puffs_node *, int, int, int);
bool dtfs_isunder(struct puffs_node *, struct puffs_node *);
#define DTFS_CTOF(a) ((struct dtfs_file *)(((struct puffs_node *)a)->pn_data))
#define DTFS_PTOF(a) ((struct dtfs_file *)(a->pn_data))
#endif /* DTFS_H_ */