1 /*
2 * ext2fsP.h --- private header file for ext2 library
3 *
4 * Copyright (C) 1997 Theodore Ts'o.
5 *
6 * %Begin-Header%
7 * This file may be redistributed under the terms of the GNU Library
8 * General Public License, version 2.
9 * %End-Header%
10 */
11
12 #if HAVE_SYS_STAT_H
13 #include <sys/stat.h>
14 #endif
15
16 #include "ext2fs.h"
17
18 #define EXT2FS_MAX_NESTED_LINKS 8
19
ext2fsP_is_disk_device(mode_t mode)20 static inline int ext2fsP_is_disk_device(mode_t mode)
21 {
22 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
23 return S_ISBLK(mode) || S_ISCHR(mode);
24 #else
25 return S_ISBLK(mode);
26 #endif
27 }
28
29 /*
30 * Badblocks list
31 */
32 struct ext2_struct_u32_list {
33 int magic;
34 int num;
35 int size;
36 __u32 *list;
37 int badblocks_flags;
38 };
39
40 struct ext2_struct_u32_iterate {
41 int magic;
42 ext2_u32_list bb;
43 int ptr;
44 };
45
46
47 /*
48 * Directory block iterator definition
49 */
50 struct ext2_struct_dblist {
51 int magic;
52 ext2_filsys fs;
53 unsigned long long size;
54 unsigned long long count;
55 int sorted;
56 struct ext2_db_entry2 * list;
57 };
58
59 /*
60 * For directory iterators
61 */
62 struct dir_context {
63 ext2_ino_t dir;
64 int flags;
65 char *buf;
66 unsigned int buflen;
67 int (*func)(ext2_ino_t dir,
68 int entry,
69 struct ext2_dir_entry *dirent,
70 int offset,
71 int blocksize,
72 char *buf,
73 void *priv_data);
74 void *priv_data;
75 errcode_t errcode;
76 };
77
78 /*
79 * Inode cache structure
80 */
81 struct ext2_inode_cache {
82 void * buffer;
83 blk64_t buffer_blk;
84 int cache_last;
85 unsigned int cache_size;
86 int refcount;
87 struct ext2_inode_cache_ent *cache;
88 };
89
90 struct ext2_inode_cache_ent {
91 ext2_ino_t ino;
92 struct ext2_inode *inode;
93 };
94
95 /* Function prototypes */
96
97 extern int ext2fs_process_dir_block(ext2_filsys fs,
98 blk64_t *blocknr,
99 e2_blkcnt_t blockcnt,
100 blk64_t ref_block,
101 int ref_offset,
102 void *priv_data);
103
104 extern errcode_t ext2fs_inline_data_ea_remove(ext2_filsys fs, ext2_ino_t ino);
105 extern errcode_t ext2fs_inline_data_expand(ext2_filsys fs, ext2_ino_t ino);
106 extern int ext2fs_inline_data_dir_iterate(ext2_filsys fs,
107 ext2_ino_t ino,
108 void *priv_data);
109
110 /* Generic numeric progress meter */
111
112 struct ext2fs_numeric_progress_struct {
113 __u64 max;
114 int log_max;
115 int skip_progress;
116 };
117
118 /*
119 * progress callback functions
120 */
121 struct ext2fs_progress_ops {
122 void (*init)(ext2_filsys fs,
123 struct ext2fs_numeric_progress_struct * progress,
124 const char *label, __u64 max);
125 void (*update)(ext2_filsys fs,
126 struct ext2fs_numeric_progress_struct * progress,
127 __u64 val);
128 void (*close)(ext2_filsys fs,
129 struct ext2fs_numeric_progress_struct * progress,
130 const char *message);
131 };
132
133 extern struct ext2fs_progress_ops ext2fs_numeric_progress_ops;
134
135 extern void ext2fs_numeric_progress_init(ext2_filsys fs,
136 struct ext2fs_numeric_progress_struct * progress,
137 const char *label, __u64 max);
138 extern void ext2fs_numeric_progress_update(ext2_filsys fs,
139 struct ext2fs_numeric_progress_struct * progress,
140 __u64 val);
141 extern void ext2fs_numeric_progress_close(ext2_filsys fs,
142 struct ext2fs_numeric_progress_struct * progress,
143 const char *message);
144
145 /*
146 * 64-bit bitmap support
147 */
148
149 extern errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic,
150 int type, __u64 start, __u64 end,
151 __u64 real_end,
152 const char * description,
153 ext2fs_generic_bitmap *bmap);
154
155 extern void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap);
156
157 extern errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src,
158 ext2fs_generic_bitmap *dest);
159
160 extern errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap,
161 __u64 new_end,
162 __u64 new_real_end);
163 extern errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap,
164 errcode_t neq,
165 __u64 end, __u64 *oend);
166 extern int ext2fs_mark_generic_bmap(ext2fs_generic_bitmap bitmap,
167 __u64 arg);
168 extern int ext2fs_unmark_generic_bmap(ext2fs_generic_bitmap bitmap,
169 __u64 arg);
170 extern int ext2fs_test_generic_bmap(ext2fs_generic_bitmap bitmap,
171 __u64 arg);
172 extern errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bitmap,
173 __u64 start, unsigned int num,
174 void *in);
175 extern errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bitmap,
176 __u64 start, unsigned int num,
177 void *out);
178 extern void ext2fs_warn_bitmap32(ext2fs_generic_bitmap bitmap,const char *func);
179
180 extern int ext2fs_mem_is_zero(const char *mem, size_t len);
181
182 extern int ext2fs_file_block_offset_too_big(ext2_filsys fs,
183 struct ext2_inode *inode,
184 blk64_t offset);
185
186 /* atexit support */
187 typedef void (*ext2_exit_fn)(void *);
188 errcode_t ext2fs_add_exit_fn(ext2_exit_fn fn, void *data);
189 errcode_t ext2fs_remove_exit_fn(ext2_exit_fn fn, void *data);
190
191 #define EXT2FS_BUILD_BUG_ON(cond) ((void)sizeof(char[1 - 2*!!(cond)]))
192