/* $NetBSD: nilfs_subr.h,v 1.4.48.1 2023/06/27 18:42:39 martin Exp $ */ /* * Copyright (c) 2008, 2009 Reinoud Zandijk * 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 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 _FS_NILFS_NILFS_SUBR_H_ #define _FS_NILFS_NILFS_SUBR_H_ /* handies */ #define VFSTONILFS(mp) ((struct nilfs_mount *)mp->mnt_data) /* basic calculators */ uint64_t nilfs_get_segnum_of_block(struct nilfs_device *nilfsdev, uint64_t blocknr); void nilfs_get_segment_range(struct nilfs_device *nilfsdev, uint64_t segnum, uint64_t *seg_start, uint64_t *seg_end); void nilfs_calc_mdt_consts(struct nilfs_device *nilfsdev, struct nilfs_mdt *mdt, int entry_size); uint32_t crc32_le(uint32_t crc, const uint8_t *buf, size_t len); /* log reading / volume helpers */ int nilfs_get_segment_log(struct nilfs_device *nilfsdev, uint64_t *blocknr, uint64_t *offset, struct buf **bpp, int len, void *blob); void nilfs_search_super_root(struct nilfs_device *nilfsdev); /* reading */ int nilfs_bread(struct nilfs_node *node, uint64_t blocknr, int flags, struct buf **bpp); /* btree operations */ int nilfs_btree_nlookup(struct nilfs_node *node, uint64_t from, uint64_t blks, uint64_t *l2vmap); /* vtop operations */ void nilfs_mdt_trans(struct nilfs_mdt *mdt, uint64_t index, uint64_t *blocknr, uint32_t *entry_in_block); int nilfs_nvtop(struct nilfs_node *node, uint64_t blks, uint64_t *l2vmap, uint64_t *v2pmap); /* node action implementators */ int nilfs_get_node_raw(struct nilfs_device *nilfsdev, struct nilfs_mount *ump, uint64_t ino, struct nilfs_inode *inode, struct nilfs_node **nodep); void nilfs_dispose_node(struct nilfs_node **node); int nilfs_grow_node(struct nilfs_node *node, uint64_t new_size); int nilfs_shrink_node(struct nilfs_node *node, uint64_t new_size); void nilfs_itimes(struct nilfs_node *nilfs_node, struct timespec *acc, struct timespec *mod, struct timespec *birth); int nilfs_update(struct vnode *node, struct timespec *acc, struct timespec *mod, struct timespec *birth, int updflags); /* return vpp? */ int nilfs_lookup_name_in_dir(struct vnode *dvp, const char *name, int namelen, uint64_t *ino, int *found); int nilfs_create_node(struct vnode *dvp, struct vnode **vpp, struct vattr *vap, struct componentname *cnp); void nilfs_delete_node(struct nilfs_node *nilfs_node); int nilfs_chsize(struct vnode *vp, u_quad_t newsize, kauth_cred_t cred); int nilfs_dir_detach(struct nilfs_mount *ump, struct nilfs_node *dir_node, struct nilfs_node *nilfs_node, struct componentname *cnp); int nilfs_dir_attach(struct nilfs_mount *ump, struct nilfs_node *dir_node, struct nilfs_node *nilfs_node, struct vattr *vap, struct componentname *cnp); /* vnode operations */ int nilfs_inactive(void *v); int nilfs_reclaim(void *v); int nilfs_readdir(void *v); int nilfs_getattr(void *v); int nilfs_setattr(void *v); int nilfs_pathconf(void *v); int nilfs_open(void *v); int nilfs_close(void *v); int nilfs_access(void *v); int nilfs_read(void *v); int nilfs_write(void *v); int nilfs_trivial_bmap(void *v); int nilfs_vfsstrategy(void *v); int nilfs_lookup(void *v); int nilfs_create(void *v); int nilfs_mknod(void *v); int nilfs_link(void *); int nilfs_symlink(void *v); int nilfs_readlink(void *v); int nilfs_rename(void *v); int nilfs_remove(void *v); int nilfs_mkdir(void *v); int nilfs_rmdir(void *v); int nilfs_fsync(void *v); int nilfs_advlock(void *v); #endif /* !_FS_NILFS_NILFS_SUBR_H_ */