259 lines
12 KiB
C
259 lines
12 KiB
C
/* $NetBSD: nilfs_subr.h,v 1.1 2009/07/18 16:31:42 reinoud Exp $ */
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/*
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* Copyright (c) 2008, 2009 Reinoud Zandijk
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef _FS_NILFS_NILFS_SUBR_H_
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#define _FS_NILFS_NILFS_SUBR_H_
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/* handies */
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#define VFSTONILFS(mp) ((struct nilfs_mount *)mp->mnt_data)
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/* basic calculators */
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uint64_t nilfs_get_segnum_of_block(struct nilfs_device *nilfsdev, uint64_t blocknr);
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void nilfs_get_segment_range(struct nilfs_device *nilfsdev, uint64_t segnum,
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uint64_t *seg_start, uint64_t *seg_end);
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void nilfs_calc_mdt_consts(struct nilfs_device *nilfsdev,
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struct nilfs_mdt *mdt, int entry_size);
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uint32_t crc32_le(uint32_t crc, const uint8_t *buf, size_t len);
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/* log reading / volume helpers */
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int nilfs_get_segment_log(struct nilfs_device *nilfsdev, uint64_t *blocknr,
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uint64_t *offset, struct buf **bpp, int len, void *blob);
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void nilfs_search_super_root(struct nilfs_device *nilfsdev);
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/* reading */
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int nilfs_bread(struct nilfs_node *node, uint64_t blocknr, struct kauth_cred *cred,
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int flags, struct buf **bpp);
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/* btree operations */
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int nilfs_btree_nlookup(struct nilfs_node *node, uint64_t from, uint64_t blks, uint64_t *l2vmap);
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/* vtop operations */
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int nilfs_nvtop(struct nilfs_node *node, uint64_t blks, uint64_t *l2vmap, uint64_t *v2pmap);
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/* node action implementators */
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int nilfs_get_node(struct nilfs_mount *ump, uint64_t ino, struct nilfs_node **nodep);
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int nilfs_get_node_raw(struct nilfs_device *nilfsdev, struct nilfs_mount *ump, uint64_t ino, struct nilfs_inode *inode, struct nilfs_node **nodep);
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void nilfs_dispose_node(struct nilfs_node **node);
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int nilfs_grow_node(struct nilfs_node *node, uint64_t new_size);
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int nilfs_shrink_node(struct nilfs_node *node, uint64_t new_size);
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void nilfs_itimes(struct nilfs_node *nilfs_node, struct timespec *acc,
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struct timespec *mod, struct timespec *birth);
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int nilfs_update(struct vnode *node, struct timespec *acc,
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struct timespec *mod, struct timespec *birth, int updflags);
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/* return vpp? */
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int nilfs_lookup_name_in_dir(struct vnode *dvp, const char *name, int namelen, uint64_t *ino, int *found);
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int nilfs_create_node(struct vnode *dvp, struct vnode **vpp, struct vattr *vap, struct componentname *cnp);
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void nilfs_delete_node(struct nilfs_node *nilfs_node);
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int nilfs_chsize(struct vnode *vp, u_quad_t newsize, kauth_cred_t cred);
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int nilfs_dir_detach(struct nilfs_mount *ump, struct nilfs_node *dir_node, struct nilfs_node *nilfs_node, struct componentname *cnp);
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int nilfs_dir_attach(struct nilfs_mount *ump, struct nilfs_node *dir_node, struct nilfs_node *nilfs_node, struct vattr *vap, struct componentname *cnp);
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/* vnode operations */
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int nilfs_inactive(void *v);
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int nilfs_reclaim(void *v);
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int nilfs_readdir(void *v);
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int nilfs_getattr(void *v);
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int nilfs_setattr(void *v);
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int nilfs_pathconf(void *v);
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int nilfs_open(void *v);
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int nilfs_close(void *v);
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int nilfs_access(void *v);
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int nilfs_read(void *v);
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int nilfs_write(void *v);
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int nilfs_trivial_bmap(void *v);
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int nilfs_vfsstrategy(void *v);
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int nilfs_lookup(void *v);
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int nilfs_create(void *v);
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int nilfs_mknod(void *v);
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int nilfs_link(void *);
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int nilfs_symlink(void *v);
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int nilfs_readlink(void *v);
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int nilfs_rename(void *v);
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int nilfs_remove(void *v);
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int nilfs_mkdir(void *v);
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int nilfs_rmdir(void *v);
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int nilfs_fsync(void *v);
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int nilfs_advlock(void *v);
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#endif /* !_FS_NILFS_NILFS_SUBR_H_ */
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#if 0
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/* device information updating */
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int nilfs_update_trackinfo(struct nilfs_mount *ump, struct mmc_trackinfo *trackinfo);
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int nilfs_update_discinfo(struct nilfs_mount *ump);
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int nilfs_search_tracks(struct nilfs_mount *ump, struct nilfs_args *args,
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int *first_tracknr, int *last_tracknr);
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int nilfs_search_writing_tracks(struct nilfs_mount *ump);
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int nilfs_setup_writeparams(struct nilfs_mount *ump);
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int nilfs_synchronise_caches(struct nilfs_mount *ump);
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/* tags operations */
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int nilfs_fidsize(struct fileid_desc *fid);
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int nilfs_check_tag(void *blob);
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int nilfs_check_tag_payload(void *blob, uint32_t max_length);
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void nilfs_validate_tag_sum(void *blob);
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void nilfs_validate_tag_and_crc_sums(void *blob);
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int nilfs_tagsize(union dscrptr *dscr, uint32_t nilfs_sector_size);
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/* read/write descriptors */
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int nilfs_read_phys_dscr(
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struct nilfs_mount *ump,
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uint32_t sector,
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struct malloc_type *mtype, /* where to allocate */
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union dscrptr **dstp); /* out */
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int nilfs_write_phys_dscr_sync(struct nilfs_mount *ump, struct nilfs_node *nilfs_node,
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int what, union dscrptr *dscr,
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uint32_t sector, uint32_t logsector);
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int nilfs_write_phys_dscr_async(struct nilfs_mount *ump, struct nilfs_node *nilfs_node,
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int what, union dscrptr *dscr,
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uint32_t sector, uint32_t logsector,
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void (*dscrwr_callback)(struct buf *));
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/* read/write node descriptors */
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int nilfs_create_logvol_dscr(struct nilfs_mount *ump, struct nilfs_node *nilfs_node,
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struct long_ad *icb, union dscrptr **dscrptr);
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void nilfs_free_logvol_dscr(struct nilfs_mount *ump, struct long_ad *icb_loc,
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void *dscr);
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int nilfs_read_logvol_dscr(struct nilfs_mount *ump, struct long_ad *icb,
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union dscrptr **dscrptr);
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int nilfs_write_logvol_dscr(struct nilfs_node *nilfs_node, union dscrptr *dscr,
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struct long_ad *icb, int waitfor);
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/* volume descriptors readers and checkers */
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int nilfs_read_anchors(struct nilfs_mount *ump);
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int nilfs_read_vds_space(struct nilfs_mount *ump);
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int nilfs_process_vds(struct nilfs_mount *ump);
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int nilfs_read_vds_tables(struct nilfs_mount *ump);
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int nilfs_read_rootdirs(struct nilfs_mount *ump);
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/* open/close and sync volumes */
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int nilfs_open_logvol(struct nilfs_mount *ump);
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int nilfs_close_logvol(struct nilfs_mount *ump, int mntflags);
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int nilfs_writeout_vat(struct nilfs_mount *ump);
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int nilfs_write_physical_partition_spacetables(struct nilfs_mount *ump, int waitfor);
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int nilfs_write_metadata_partition_spacetable(struct nilfs_mount *ump, int waitfor);
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void nilfs_do_sync(struct nilfs_mount *ump, kauth_cred_t cred, int waitfor);
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/* translation services */
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int nilfs_translate_vtop(struct nilfs_mount *ump, struct long_ad *icb_loc,
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uint32_t *lb_numres, uint32_t *extres);
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void nilfs_translate_vtop_list(struct nilfs_mount *ump, uint32_t sectors,
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uint16_t vpart_num, uint64_t *lmapping, uint64_t *pmapping);
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int nilfs_translate_file_extent(struct nilfs_node *node,
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uint32_t from, uint32_t num_lb, uint64_t *map);
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void nilfs_get_adslot(struct nilfs_node *nilfs_node, int slot, struct long_ad *icb, int *eof);
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int nilfs_append_adslot(struct nilfs_node *nilfs_node, int *slot, struct long_ad *icb);
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int nilfs_vat_read(struct nilfs_node *vat_node, uint8_t *blob, int size, uint32_t offset);
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int nilfs_vat_write(struct nilfs_node *vat_node, uint8_t *blob, int size, uint32_t offset);
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/* disc allocation */
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void nilfs_late_allocate_buf(struct nilfs_mount *ump, struct buf *buf, uint64_t *lmapping, struct long_ad *node_ad_cpy, uint16_t *vpart_num);
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void nilfs_free_allocated_space(struct nilfs_mount *ump, uint32_t lb_num, uint16_t vpart_num, uint32_t num_lb);
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int nilfs_pre_allocate_space(struct nilfs_mount *ump, int nilfs_c_type, uint32_t num_lb, uint16_t vpartnr, uint64_t *lmapping);
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int nilfs_grow_node(struct nilfs_node *node, uint64_t new_size);
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int nilfs_shrink_node(struct nilfs_node *node, uint64_t new_size);
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/* node readers and writers */
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uint64_t nilfs_advance_uniqueid(struct nilfs_mount *ump);
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#define NILFS_LOCK_NODE(nilfs_node, flag) nilfs_lock_node(nilfs_node, (flag), __FILE__, __LINE__)
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#define NILFS_UNLOCK_NODE(nilfs_node, flag) nilfs_unlock_node(nilfs_node, (flag))
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void nilfs_lock_node(struct nilfs_node *nilfs_node, int flag, char const *fname, const int lineno);
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void nilfs_unlock_node(struct nilfs_node *nilfs_node, int flag);
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int nilfs_get_node(struct nilfs_mount *ump, struct long_ad *icbloc, struct nilfs_node **noderes);
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int nilfs_writeout_node(struct nilfs_node *nilfs_node, int waitfor);
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int nilfs_dispose_node(struct nilfs_node *node);
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/* node ops */
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int nilfs_resize_node(struct nilfs_node *node, uint64_t new_size, int *extended);
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int nilfs_extattr_search_intern(struct nilfs_node *node, uint32_t sattr, char const *sattrname, uint32_t *offsetp, uint32_t *lengthp);
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/* node data buffer read/write */
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void nilfs_read_filebuf(struct nilfs_node *node, struct buf *buf);
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void nilfs_write_filebuf(struct nilfs_node *node, struct buf *buf);
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void nilfs_fixup_fid_block(uint8_t *blob, int lb_size, int rfix_pos, int max_rfix_pos, uint32_t lb_num);
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void nilfs_fixup_internal_extattr(uint8_t *blob, uint32_t lb_num);
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void nilfs_fixup_node_internals(struct nilfs_mount *ump, uint8_t *blob, int nilfs_c_type);
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/* device strategy */
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void nilfs_discstrat_init(struct nilfs_mount *ump);
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void nilfs_discstrat_finish(struct nilfs_mount *ump);
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void nilfs_discstrat_queuebuf(struct nilfs_mount *ump, struct buf *nestbuf);
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/* structure writers */
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int nilfs_write_terminator(struct nilfs_mount *ump, uint32_t sector);
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/* structure creators */
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void nilfs_inittag(struct nilfs_mount *ump, struct desc_tag *tag, int tagid, uint32_t sector);
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void nilfs_set_regid(struct regid *regid, char const *name);
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void nilfs_add_domain_regid(struct nilfs_mount *ump, struct regid *regid);
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void nilfs_add_nilfs_regid(struct nilfs_mount *ump, struct regid *regid);
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void nilfs_add_impl_regid(struct nilfs_mount *ump, struct regid *regid);
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void nilfs_add_app_regid(struct nilfs_mount *ump, struct regid *regid);
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/* directory operations and helpers */
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void nilfs_osta_charset(struct charspec *charspec);
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int nilfs_read_fid_stream(struct vnode *vp, uint64_t *offset, struct fileid_desc *fid, struct dirent *dirent);
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int nilfs_lookup_name_in_dir(struct vnode *vp, const char *name, int namelen, struct long_ad *icb_loc, int *found);
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int nilfs_create_node(struct vnode *dvp, struct vnode **vpp, struct vattr *vap, struct componentname *cnp);
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void nilfs_delete_node(struct nilfs_node *nilfs_node);
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int nilfs_chsize(struct vnode *vp, u_quad_t newsize, kauth_cred_t cred);
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int nilfs_dir_detach(struct nilfs_mount *ump, struct nilfs_node *dir_node, struct nilfs_node *nilfs_node, struct componentname *cnp);
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int nilfs_dir_attach(struct nilfs_mount *ump, struct nilfs_node *dir_node, struct nilfs_node *nilfs_node, struct vattr *vap, struct componentname *cnp);
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/* update and times */
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void nilfs_add_to_dirtylist(struct nilfs_node *nilfs_node);
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void nilfs_remove_from_dirtylist(struct nilfs_node *nilfs_node);
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void nilfs_itimes(struct nilfs_node *nilfs_node, struct timespec *acc,
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struct timespec *mod, struct timespec *birth);
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int nilfs_update(struct vnode *node, struct timespec *acc,
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struct timespec *mod, struct timespec *birth, int updflags);
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/* helpers and converters */
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long nilfs_calchash(struct long_ad *icbptr); /* for `inode' numbering */
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uint32_t nilfs_getaccessmode(struct nilfs_node *node);
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void nilfs_setaccessmode(struct nilfs_node *nilfs_node, mode_t mode);
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void nilfs_getownership(struct nilfs_node *nilfs_node, uid_t *uidp, gid_t *gidp);
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void nilfs_setownership(struct nilfs_node *nilfs_node, uid_t uid, gid_t gid);
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void nilfs_to_unix_name(char *result, int result_len, char *id, int len, struct charspec *chsp);
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void unix_to_nilfs_name(char *result, uint8_t *result_len, char const *name, int name_len, struct charspec *chsp);
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void nilfs_timestamp_to_timespec(struct nilfs_mount *ump, struct timestamp *timestamp, struct timespec *timespec);
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void nilfs_timespec_to_timestamp(struct timespec *timespec, struct timestamp *timestamp);
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#endif
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