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 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