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1 /*
2  * resize2fs.h --- ext2 resizer header file
3  *
4  * Copyright (C) 1997, 1998 by Theodore Ts'o and
5  * 	PowerQuest, Inc.
6  *
7  * Copyright (C) 1999, 2000 by Theosore Ts'o
8  *
9  * %Begin-Header%
10  * This file may be redistributed under the terms of the GNU Public
11  * License.
12  * %End-Header%
13  */
14 
15 #include <stdio.h>
16 #include <string.h>
17 #ifdef HAVE_UNISTD_H
18 #include <unistd.h>
19 #endif
20 #include <stdlib.h>
21 #ifdef HAVE_SYS_TYPES_H
22 #include <sys/types.h>
23 #endif
24 #ifdef HAVE_SYS_TIME_H
25 #include <sys/time.h>
26 #endif
27 #if HAVE_ERRNO_H
28 #include <errno.h>
29 #endif
30 
31 #if EXT2_FLAT_INCLUDES
32 #include "ext2_fs.h"
33 #include "ext2fs.h"
34 #include "e2p.h"
35 #else
36 #include "ext2fs/ext2_fs.h"
37 #include "ext2fs/ext2fs.h"
38 #include "e2p/e2p.h"
39 #endif
40 
41 #ifdef ENABLE_NLS
42 #include <libintl.h>
43 #include <locale.h>
44 #define _(a) (gettext (a))
45 #ifdef gettext_noop
46 #define N_(a) gettext_noop (a)
47 #else
48 #define N_(a) (a)
49 #endif
50 #ifndef NLS_CAT_NAME
51 #define NLS_CAT_NAME "e2fsprogs"
52 #endif
53 #ifndef LOCALEDIR
54 #define LOCALEDIR "/usr/share/locale"
55 #endif
56 #else
57 #define _(a) (a)
58 #define N_(a) a
59 #endif
60 
61 
62 /*
63  * For the extent map
64  */
65 typedef struct _ext2_extent *ext2_extent;
66 
67 /*
68  * For the simple progress meter
69  */
70 typedef struct ext2_sim_progress *ext2_sim_progmeter;
71 
72 /*
73  * Flags for the resizer; most are debugging flags only
74  */
75 #define RESIZE_DEBUG_IO			0x0001
76 #define RESIZE_DEBUG_BMOVE		0x0002
77 #define RESIZE_DEBUG_INODEMAP		0x0004
78 #define RESIZE_DEBUG_ITABLEMOVE		0x0008
79 
80 #define RESIZE_PERCENT_COMPLETE		0x0100
81 #define RESIZE_VERBOSE			0x0200
82 
83 /*
84  * The core state structure for the ext2 resizer
85  */
86 typedef struct ext2_resize_struct *ext2_resize_t;
87 
88 struct ext2_resize_struct {
89 	ext2_filsys	old_fs;
90 	ext2_filsys	new_fs;
91 	ext2fs_block_bitmap reserve_blocks;
92 	ext2fs_block_bitmap move_blocks;
93 	ext2_extent	bmap;
94 	ext2_extent	imap;
95 	int		needed_blocks;
96 	int		flags;
97 	char		*itable_buf;
98 
99 	/*
100 	 * For the block allocator
101 	 */
102 	blk_t		new_blk;
103 	int		alloc_state;
104 
105 	/*
106 	 * For the progress meter
107 	 */
108 	errcode_t	(*progress)(ext2_resize_t rfs, int pass,
109 				    unsigned long cur,
110 				    unsigned long max);
111 	void		*prog_data;
112 };
113 
114 /*
115  * Progress pass numbers...
116  */
117 #define E2_RSZ_EXTEND_ITABLE_PASS	1
118 #define E2_RSZ_BLOCK_RELOC_PASS		2
119 #define E2_RSZ_INODE_SCAN_PASS		3
120 #define E2_RSZ_INODE_REF_UPD_PASS	4
121 #define E2_RSZ_MOVE_ITABLE_PASS		5
122 
123 
124 /* prototypes */
125 extern errcode_t resize_fs(ext2_filsys fs, blk_t *new_size, int flags,
126 			   errcode_t	(*progress)(ext2_resize_t rfs,
127 					    int pass, unsigned long cur,
128 					    unsigned long max));
129 
130 extern errcode_t adjust_fs_info(ext2_filsys fs, ext2_filsys old_fs,
131 				blk_t new_size);
132 
133 
134 /* extent.c */
135 extern errcode_t ext2fs_create_extent_table(ext2_extent *ret_extent,
136 					    int size);
137 extern void ext2fs_free_extent_table(ext2_extent extent);
138 extern errcode_t ext2fs_add_extent_entry(ext2_extent extent,
139 					 __u32 old_loc, __u32 new_loc);
140 extern __u32 ext2fs_extent_translate(ext2_extent extent, __u32 old_loc);
141 extern void ext2fs_extent_dump(ext2_extent extent, FILE *out);
142 extern errcode_t ext2fs_iterate_extent(ext2_extent extent, __u32 *old_loc,
143 				       __u32 *new_loc, int *size);
144 
145 /* online.c */
146 extern errcode_t online_resize_fs(ext2_filsys fs, const char *mtpt,
147 				  blk_t *new_size, int flags);
148 
149 /* sim_progress.c */
150 extern errcode_t ext2fs_progress_init(ext2_sim_progmeter *ret_prog,
151 				      const char *label,
152 				      int labelwidth, int barwidth,
153 				      __u32 maxdone, int flags);
154 extern void ext2fs_progress_update(ext2_sim_progmeter prog,
155 					__u32 current);
156 extern void ext2fs_progress_close(ext2_sim_progmeter prog);
157 
158 
159