1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * befs.h
4 *
5 * Copyright (C) 2001-2002 Will Dyson <will_dyson@pobox.com>
6 * Copyright (C) 1999 Makoto Kato (m_kato@ga2.so-net.ne.jp)
7 */
8
9#ifndef _LINUX_BEFS_H
10#define _LINUX_BEFS_H
11
12#include "befs_fs_types.h"
13
14/* used in debug.c */
15#define BEFS_VERSION "0.9.3"
16
17
18typedef u64 befs_blocknr_t;
19/*
20 * BeFS in memory structures
21 */
22
23struct befs_mount_options {
24	kgid_t gid;
25	kuid_t uid;
26	int use_gid;
27	int use_uid;
28	int debug;
29	char *iocharset;
30};
31
32struct befs_sb_info {
33	u32 magic1;
34	u32 block_size;
35	u32 block_shift;
36	int byte_order;
37	befs_off_t num_blocks;
38	befs_off_t used_blocks;
39	u32 inode_size;
40	u32 magic2;
41
42	/* Allocation group information */
43	u32 blocks_per_ag;
44	u32 ag_shift;
45	u32 num_ags;
46
47	/* State of the superblock */
48	u32 flags;
49
50	/* Journal log entry */
51	befs_block_run log_blocks;
52	befs_off_t log_start;
53	befs_off_t log_end;
54
55	befs_inode_addr root_dir;
56	befs_inode_addr indices;
57	u32 magic3;
58
59	struct befs_mount_options mount_opts;
60	struct nls_table *nls;
61};
62
63struct befs_inode_info {
64	u32 i_flags;
65	u32 i_type;
66
67	befs_inode_addr i_inode_num;
68	befs_inode_addr i_parent;
69	befs_inode_addr i_attribute;
70
71	union {
72		befs_data_stream ds;
73		char symlink[BEFS_SYMLINK_LEN];
74	} i_data;
75
76	struct inode vfs_inode;
77};
78
79enum befs_err {
80	BEFS_OK,
81	BEFS_ERR,
82	BEFS_BAD_INODE,
83	BEFS_BT_END,
84	BEFS_BT_EMPTY,
85	BEFS_BT_MATCH,
86	BEFS_BT_OVERFLOW,
87	BEFS_BT_NOT_FOUND
88};
89
90
91/****************************/
92/* debug.c */
93__printf(2, 3)
94void befs_error(const struct super_block *sb, const char *fmt, ...);
95__printf(2, 3)
96void befs_warning(const struct super_block *sb, const char *fmt, ...);
97__printf(2, 3)
98void befs_debug(const struct super_block *sb, const char *fmt, ...);
99
100void befs_dump_super_block(const struct super_block *sb, befs_super_block *);
101void befs_dump_inode(const struct super_block *sb, befs_inode *);
102void befs_dump_index_entry(const struct super_block *sb, befs_disk_btree_super *);
103void befs_dump_index_node(const struct super_block *sb, befs_btree_nodehead *);
104/****************************/
105
106
107/* Gets a pointer to the private portion of the super_block
108 * structure from the public part
109 */
110static inline struct befs_sb_info *
111BEFS_SB(const struct super_block *super)
112{
113	return (struct befs_sb_info *) super->s_fs_info;
114}
115
116static inline struct befs_inode_info *
117BEFS_I(const struct inode *inode)
118{
119	return container_of(inode, struct befs_inode_info, vfs_inode);
120}
121
122static inline befs_blocknr_t
123iaddr2blockno(struct super_block *sb, const befs_inode_addr *iaddr)
124{
125	return ((iaddr->allocation_group << BEFS_SB(sb)->ag_shift) +
126		iaddr->start);
127}
128
129static inline befs_inode_addr
130blockno2iaddr(struct super_block *sb, befs_blocknr_t blockno)
131{
132	befs_inode_addr iaddr;
133
134	iaddr.allocation_group = blockno >> BEFS_SB(sb)->ag_shift;
135	iaddr.start =
136	    blockno - (iaddr.allocation_group << BEFS_SB(sb)->ag_shift);
137	iaddr.len = 1;
138
139	return iaddr;
140}
141
142static inline unsigned int
143befs_iaddrs_per_block(struct super_block *sb)
144{
145	return BEFS_SB(sb)->block_size / sizeof(befs_disk_inode_addr);
146}
147
148#include "endian.h"
149
150#endif				/* _LINUX_BEFS_H */
151