resize/resize2fs.h

   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 Theodore 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 #define RESIZE_ENABLE_64BIT             0x0400
  86 #define RESIZE_DISABLE_64BIT            0x0800
  87
  88 /*
  89  * This structure is used for keeping track of how much resources have
  90  * been used for a particular resize2fs pass.
  91  */
  92 struct resource_track {
  93         const char *desc;
  94         struct timeval time_start;
  95         struct timeval user_start;
  96         struct timeval system_start;
  97         void    *brk_start;
  98         unsigned long long bytes_read;
  99         unsigned long long bytes_written;
 100 };
 101
 102 /*
 103  * The core state structure for the ext2 resizer
 104  */
 105 typedef struct ext2_resize_struct *ext2_resize_t;
 106
 107 struct ext2_resize_struct {
 108         ext2_filsys     old_fs;
 109         ext2_filsys     new_fs;
 110         ext2fs_block_bitmap reserve_blocks;
 111         ext2fs_block_bitmap move_blocks;
 112         ext2_extent     bmap;
 113         ext2_extent     imap;
 114         blk64_t         needed_blocks;
 115         int             flags;
 116         char            *itable_buf;
 117
 118         /*
 119          * For the block allocator
 120          */
 121         blk64_t         new_blk;
 122         int             alloc_state;
 123
 124         /*
 125          * For the progress meter
 126          */
 127         errcode_t       (*progress)(ext2_resize_t rfs, int pass,
 128                                     unsigned long cur,
 129                                     unsigned long max);
 130         void            *prog_data;
 131 };
 132
 133 /*
 134  * Progress pass numbers...
 135  */
 136 #define E2_RSZ_EXTEND_ITABLE_PASS       1
 137 #define E2_RSZ_BLOCK_RELOC_PASS         2
 138 #define E2_RSZ_INODE_SCAN_PASS          3
 139 #define E2_RSZ_INODE_REF_UPD_PASS       4
 140 #define E2_RSZ_MOVE_ITABLE_PASS         5
 141
 142
 143 /* prototypes */
 144 extern errcode_t resize_fs(ext2_filsys fs, blk64_t *new_size, int flags,
 145                            errcode_t    (*progress)(ext2_resize_t rfs,
 146                                             int pass, unsigned long cur,
 147                                             unsigned long max));
 148
 149 extern errcode_t adjust_fs_info(ext2_filsys fs, ext2_filsys old_fs,
 150                                 ext2fs_block_bitmap reserve_blocks,
 151                                 blk64_t new_size);
 152 extern blk64_t calculate_minimum_resize_size(ext2_filsys fs, int flags);
 153
 154
 155 /* extent.c */
 156 extern errcode_t ext2fs_create_extent_table(ext2_extent *ret_extent,
 157                                             __u64 size);
 158 extern void ext2fs_free_extent_table(ext2_extent extent);
 159 extern errcode_t ext2fs_add_extent_entry(ext2_extent extent,
 160                                          __u64 old_loc, __u64 new_loc);
 161 extern __u64 ext2fs_extent_translate(ext2_extent extent, __u64 old_loc);
 162 extern void ext2fs_extent_dump(ext2_extent extent, FILE *out);
 163 extern errcode_t ext2fs_iterate_extent(ext2_extent extent, __u64 *old_loc,
 164                                        __u64 *new_loc, __u64 *size);
 165
 166 /* main.c */
 167 extern char *program_name;
 168
 169 /* online.c */
 170 extern errcode_t online_resize_fs(ext2_filsys fs, const char *mtpt,
 171                                   blk64_t *new_size, int flags);
 172
 173 /* resource_track.c */
 174 extern void init_resource_track(struct resource_track *track, const char *desc,
 175                                 io_channel channel);
 176 extern void print_resource_track(ext2_resize_t rfs,
 177                                  struct resource_track *track,
 178                                  io_channel channel);
 179
 180 /* sim_progress.c */
 181 extern errcode_t ext2fs_progress_init(ext2_sim_progmeter *ret_prog,
 182                                       const char *label,
 183                                       int labelwidth, int barwidth,
 184                                       __u32 maxdone, int flags);
 185 extern void ext2fs_progress_update(ext2_sim_progmeter prog,
 186                                         __u32 current);
 187 extern void ext2fs_progress_close(ext2_sim_progmeter prog);
 188
 189