2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2022 The FreeBSD Foundation
6 * This software was developed by Mark Johnston under sponsorship from
7 * the FreeBSD Foundation.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions are
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #ifndef _MAKEFS_ZFS_H_
32 #define _MAKEFS_ZFS_H_
34 #include <sys/types.h>
35 #include <sys/queue.h>
37 #include <bitstring.h>
42 #include "zfs/nvlist.h"
44 #include "zfs/zfsimpl.h"
46 #define MAXBLOCKSHIFT 17 /* 128KB */
47 #define MAXBLOCKSIZE ((off_t)(1 << MAXBLOCKSHIFT))
48 _Static_assert(MAXBLOCKSIZE == SPA_OLDMAXBLOCKSIZE, "");
49 #define MINBLOCKSHIFT 9 /* 512B */
50 #define MINBLOCKSIZE ((off_t)(1 << MINBLOCKSHIFT))
51 _Static_assert(MINBLOCKSIZE == SPA_MINBLOCKSIZE, "");
52 #define MINDEVSIZE ((off_t)SPA_MINDEVSIZE)
54 /* All data was written in this transaction group. */
57 typedef struct zfs_dsl_dataset zfs_dsl_dataset_t;
58 typedef struct zfs_dsl_dir zfs_dsl_dir_t;
59 typedef struct zfs_objset zfs_objset_t;
60 typedef struct zfs_zap zfs_zap_t;
64 STAILQ_ENTRY(dataset_desc) next;
70 /* I/O buffer, just for convenience. */
71 char filebuf[MAXBLOCKSIZE];
73 /* Pool parameters. */
75 char *rootpath; /* implicit mount point prefix */
76 char *bootfs; /* bootable dataset, pool property */
77 int ashift; /* vdev block size */
78 uint64_t mssize; /* metaslab size */
79 STAILQ_HEAD(, dataset_desc) datasetdescs; /* non-root dataset descrs */
82 uint64_t poolguid; /* pool and root vdev GUID */
86 zfs_objset_t *mos; /* meta object set */
87 uint64_t objarrid; /* space map object array */
90 zfs_dsl_dir_t *rootdsldir; /* root DSL directory */
91 zfs_dsl_dataset_t *rootds;
92 zfs_dsl_dir_t *origindsldir; /* $ORIGIN */
93 zfs_dsl_dataset_t *originds;
94 zfs_dsl_dataset_t *snapds;
96 zfs_dsl_dir_t *freedsldir; /* $FREE */
97 zfs_dsl_dir_t *mosdsldir; /* $MOS */
100 int fd; /* vdev disk fd */
101 uint64_t vdevguid; /* disk vdev GUID */
102 off_t vdevsize; /* vdev size, including labels */
103 off_t asize; /* vdev size, excluding labels */
104 bitstr_t *spacemap; /* space allocation tracking */
105 int spacemapbits; /* one bit per ashift-sized block */
106 uint64_t msshift; /* log2(metaslab size) */
107 uint64_t mscount; /* number of metaslabs for this vdev */
111 void dsl_init(zfs_opt_t *);
112 const char *dsl_dir_fullname(const zfs_dsl_dir_t *);
113 uint64_t dsl_dir_id(zfs_dsl_dir_t *);
114 uint64_t dsl_dir_dataset_id(zfs_dsl_dir_t *);
115 void dsl_dir_foreach(zfs_opt_t *, zfs_dsl_dir_t *,
116 void (*)(zfs_opt_t *, zfs_dsl_dir_t *, void *), void *);
117 int dsl_dir_get_canmount(zfs_dsl_dir_t *, uint64_t *);
118 char *dsl_dir_get_mountpoint(zfs_opt_t *, zfs_dsl_dir_t *);
119 bool dsl_dir_has_dataset(zfs_dsl_dir_t *);
120 bool dsl_dir_dataset_has_objset(zfs_dsl_dir_t *);
121 void dsl_dir_dataset_write(zfs_opt_t *, zfs_objset_t *, zfs_dsl_dir_t *);
122 void dsl_dir_size_set(zfs_dsl_dir_t *, uint64_t);
123 void dsl_write(zfs_opt_t *);
126 void fs_build(zfs_opt_t *, int, fsnode *);
129 zfs_objset_t *objset_alloc(zfs_opt_t *zfs, uint64_t type);
130 off_t objset_space_alloc(zfs_opt_t *, zfs_objset_t *, off_t *);
131 dnode_phys_t *objset_dnode_alloc(zfs_objset_t *, uint8_t, uint64_t *);
132 dnode_phys_t *objset_dnode_bonus_alloc(zfs_objset_t *, uint8_t, uint8_t,
133 uint16_t, uint64_t *);
134 dnode_phys_t *objset_dnode_lookup(zfs_objset_t *, uint64_t);
135 void objset_root_blkptr_copy(const zfs_objset_t *, blkptr_t *);
136 uint64_t objset_space(const zfs_objset_t *);
137 void objset_write(zfs_opt_t *zfs, zfs_objset_t *os);
140 void vdev_init(zfs_opt_t *, const char *);
141 off_t vdev_space_alloc(zfs_opt_t *zfs, off_t *lenp);
142 void vdev_pwrite_data(zfs_opt_t *zfs, uint8_t datatype, uint8_t cksumtype,
143 uint8_t level, uint64_t fill, const void *data, off_t sz, off_t loc,
145 void vdev_pwrite_dnode_indir(zfs_opt_t *zfs, dnode_phys_t *dnode, uint8_t level,
146 uint64_t fill, const void *data, off_t sz, off_t loc, blkptr_t *bp);
147 void vdev_pwrite_dnode_data(zfs_opt_t *zfs, dnode_phys_t *dnode, const void *data,
148 off_t sz, off_t loc);
149 void vdev_label_write(zfs_opt_t *zfs, int ind, const vdev_label_t *labelp);
150 void vdev_spacemap_write(zfs_opt_t *);
151 void vdev_fini(zfs_opt_t *zfs);
154 zfs_zap_t *zap_alloc(zfs_objset_t *, dnode_phys_t *);
155 void zap_add(zfs_zap_t *, const char *, size_t, size_t, const uint8_t *);
156 void zap_add_uint64(zfs_zap_t *, const char *, uint64_t);
157 void zap_add_string(zfs_zap_t *, const char *, const char *);
158 bool zap_entry_exists(zfs_zap_t *, const char *);
159 void zap_write(zfs_opt_t *, zfs_zap_t *);
162 struct dnode_cursor *dnode_cursor_init(zfs_opt_t *, zfs_objset_t *,
163 dnode_phys_t *, off_t, off_t);
164 blkptr_t *dnode_cursor_next(zfs_opt_t *, struct dnode_cursor *, off_t);
165 void dnode_cursor_finish(zfs_opt_t *, struct dnode_cursor *);
167 #endif /* !_MAKEFS_ZFS_H_ */