[BACK]Return to dtfs.h CVS log [TXT][DIR] Up to [cvs.NetBSD.org] / src / tests / fs / puffs / h_dtfs

File: [cvs.NetBSD.org] / src / tests / fs / puffs / h_dtfs / dtfs.h (download)

Revision 1.2, Wed Jul 14 13:09:52 2010 UTC (12 years, 1 month ago) by pooka
Branch: MAIN
CVS Tags: yamt-pagecache-tag8, yamt-pagecache-base9, yamt-pagecache-base8, yamt-pagecache-base7, yamt-pagecache-base6, yamt-pagecache-base5, yamt-pagecache-base4, yamt-pagecache-base3, yamt-pagecache-base2, yamt-pagecache-base, yamt-pagecache, tls-maxphys-base, tls-maxphys, tls-earlyentropy-base, tls-earlyentropy, riastradh-xf86-video-intel-2-7-1-pre-2-21-15, riastradh-drm2-base3, riastradh-drm2-base2, riastradh-drm2-base1, riastradh-drm2-base, riastradh-drm2, prg-localcount2-base3, prg-localcount2-base2, prg-localcount2-base1, prg-localcount2-base, prg-localcount2, phil-wifi-base, phil-wifi-20200421, phil-wifi-20200411, phil-wifi-20200406, phil-wifi-20191119, phil-wifi-20190609, phil-wifi, pgoyette-localcount-base, pgoyette-localcount-20170426, pgoyette-localcount-20170320, pgoyette-localcount-20170107, pgoyette-localcount-20161104, pgoyette-localcount-20160806, pgoyette-localcount-20160726, pgoyette-localcount, pgoyette-compat-merge-20190127, pgoyette-compat-base, pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, pgoyette-compat-1126, pgoyette-compat-1020, pgoyette-compat-0930, pgoyette-compat-0906, pgoyette-compat-0728, pgoyette-compat-0625, pgoyette-compat-0521, pgoyette-compat-0502, pgoyette-compat-0422, pgoyette-compat-0415, pgoyette-compat-0407, pgoyette-compat-0330, pgoyette-compat-0322, pgoyette-compat-0315, pgoyette-compat, perseant-stdc-iso10646-base, perseant-stdc-iso10646, netbsd-9-base, netbsd-9-3-RELEASE, netbsd-9-2-RELEASE, netbsd-9-1-RELEASE, netbsd-9-0-RELEASE, netbsd-9-0-RC2, netbsd-9-0-RC1, netbsd-9, netbsd-8-base, netbsd-8-2-RELEASE, netbsd-8-1-RELEASE, netbsd-8-1-RC1, netbsd-8-0-RELEASE, netbsd-8-0-RC2, netbsd-8-0-RC1, netbsd-8, netbsd-7-nhusb-base-20170116, netbsd-7-nhusb-base, netbsd-7-nhusb, netbsd-7-base, netbsd-7-2-RELEASE, netbsd-7-1-RELEASE, netbsd-7-1-RC2, netbsd-7-1-RC1, netbsd-7-1-2-RELEASE, netbsd-7-1-1-RELEASE, netbsd-7-1, netbsd-7-0-RELEASE, netbsd-7-0-RC3, netbsd-7-0-RC2, netbsd-7-0-RC1, netbsd-7-0-2-RELEASE, netbsd-7-0-1-RELEASE, netbsd-7-0, netbsd-7, netbsd-6-base, netbsd-6-1-RELEASE, netbsd-6-1-RC4, netbsd-6-1-RC3, netbsd-6-1-RC2, netbsd-6-1-RC1, netbsd-6-1-5-RELEASE, netbsd-6-1-4-RELEASE, netbsd-6-1-3-RELEASE, netbsd-6-1-2-RELEASE, netbsd-6-1-1-RELEASE, netbsd-6-1, netbsd-6-0-RELEASE, netbsd-6-0-RC2, netbsd-6-0-RC1, netbsd-6-0-6-RELEASE, netbsd-6-0-5-RELEASE, netbsd-6-0-4-RELEASE, netbsd-6-0-3-RELEASE, netbsd-6-0-2-RELEASE, netbsd-6-0-1-RELEASE, netbsd-6-0, netbsd-6, matt-nb8-mediatek-base, matt-nb8-mediatek, matt-nb6-plus-nbase, matt-nb6-plus-base, matt-nb6-plus, matt-mips64-premerge-20101231, localcount-20160914, is-mlppp-base, is-mlppp, cjep_sun2x-base1, cjep_sun2x-base, cjep_sun2x, cjep_staticlib_x-base1, cjep_staticlib_x-base, cjep_staticlib_x, cherry-xenmp-base, cherry-xenmp, bouyer-socketcan-base1, bouyer-socketcan-base, bouyer-socketcan, bouyer-quota2-nbase, bouyer-quota2-base, bouyer-quota2, agc-symver-base, agc-symver, HEAD
Changes since 1.1: +3 -1 lines

prevent rename of source directory under itself

/*	$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_ */