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 #define RESIZE_DEBUG_RTRACK 0x0010 80 #define RESIZE_DEBUG_MIN_CALC 0x0020 81 82 #define RESIZE_PERCENT_COMPLETE 0x0100 83 #define RESIZE_VERBOSE 0x0200 84 85 /* 86 * This structure is used for keeping track of how much resources have 87 * been used for a particular resize2fs pass. 88 */ 89 struct resource_track { 90 const char *desc; 91 struct timeval time_start; 92 struct timeval user_start; 93 struct timeval system_start; 94 void *brk_start; 95 unsigned long long bytes_read; 96 unsigned long long bytes_written; 97 }; 98 99 /* 100 * The core state structure for the ext2 resizer 101 */ 102 typedef struct ext2_resize_struct *ext2_resize_t; 103 104 struct ext2_resize_struct { 105 ext2_filsys old_fs; 106 ext2_filsys new_fs; 107 ext2fs_block_bitmap reserve_blocks; 108 ext2fs_block_bitmap move_blocks; 109 ext2_extent bmap; 110 ext2_extent imap; 111 blk64_t needed_blocks; 112 int flags; 113 char *itable_buf; 114 115 /* 116 * For the block allocator 117 */ 118 blk64_t new_blk; 119 int alloc_state; 120 121 /* 122 * For the progress meter 123 */ 124 errcode_t (*progress)(ext2_resize_t rfs, int pass, 125 unsigned long cur, 126 unsigned long max); 127 void *prog_data; 128 }; 129 130 /* 131 * Progress pass numbers... 132 */ 133 #define E2_RSZ_EXTEND_ITABLE_PASS 1 134 #define E2_RSZ_BLOCK_RELOC_PASS 2 135 #define E2_RSZ_INODE_SCAN_PASS 3 136 #define E2_RSZ_INODE_REF_UPD_PASS 4 137 #define E2_RSZ_MOVE_ITABLE_PASS 5 138 139 140 /* prototypes */ 141 extern errcode_t resize_fs(ext2_filsys fs, blk64_t *new_size, int flags, 142 errcode_t (*progress)(ext2_resize_t rfs, 143 int pass, unsigned long cur, 144 unsigned long max)); 145 146 extern errcode_t adjust_fs_info(ext2_filsys fs, ext2_filsys old_fs, 147 ext2fs_block_bitmap reserve_blocks, 148 blk64_t new_size); 149 extern blk64_t calculate_minimum_resize_size(ext2_filsys fs, int flags); 150 151 152 /* extent.c */ 153 extern errcode_t ext2fs_create_extent_table(ext2_extent *ret_extent, 154 __u64 size); 155 extern void ext2fs_free_extent_table(ext2_extent extent); 156 extern errcode_t ext2fs_add_extent_entry(ext2_extent extent, 157 __u64 old_loc, __u64 new_loc); 158 extern __u64 ext2fs_extent_translate(ext2_extent extent, __u64 old_loc); 159 extern void ext2fs_extent_dump(ext2_extent extent, FILE *out); 160 extern errcode_t ext2fs_iterate_extent(ext2_extent extent, __u64 *old_loc, 161 __u64 *new_loc, __u64 *size); 162 163 /* main.c */ 164 extern char *program_name; 165 166 /* online.c */ 167 extern errcode_t online_resize_fs(ext2_filsys fs, const char *mtpt, 168 blk64_t *new_size, int flags); 169 170 /* resource_track.c */ 171 extern void init_resource_track(struct resource_track *track, const char *desc, 172 io_channel channel); 173 extern void print_resource_track(ext2_resize_t rfs, 174 struct resource_track *track, 175 io_channel channel); 176 177 /* sim_progress.c */ 178 extern errcode_t ext2fs_progress_init(ext2_sim_progmeter *ret_prog, 179 const char *label, 180 int labelwidth, int barwidth, 181 __u32 maxdone, int flags); 182 extern void ext2fs_progress_update(ext2_sim_progmeter prog, 183 __u32 current); 184 extern void ext2fs_progress_close(ext2_sim_progmeter prog); 185 186 187