projects / thirdparty / e2fsprogs.git / blame
| Commit | Line | Data |
|---|---|---|
| 8bd0c959 TT |
1 | /* |
| 2 | * alloc_stats.c --- Update allocation statistics for ext2fs | |
| 3 | * | |
| 4 | * Copyright (C) 2001 Theodore Ts'o. | |
| 5 | * | |
| 6 | * %Begin-Header% | |
| 7 | * This file may be redistributed under the terms of the GNU Public | |
| 8 | * License. | |
| 9 | * %End-Header% | |
| efc6f628 | 10 | * |
| 8bd0c959 TT |
11 | */ |
| 12 | ||
| 13 | #include <stdio.h> | |
| 14 | ||
| 15 | #include "ext2_fs.h" | |
| 16 | #include "ext2fs.h" | |
| 17 | ||
| 7f961d42 TT |
18 | void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, |
| 19 | int inuse, int isdir) | |
| 8bd0c959 TT |
20 | { |
| 21 | int group = ext2fs_group_of_ino(fs, ino); | |
| 22 | ||
| 23 | if (inuse > 0) | |
| 24 | ext2fs_mark_inode_bitmap(fs->inode_map, ino); | |
| 25 | else | |
| 26 | ext2fs_unmark_inode_bitmap(fs->inode_map, ino); | |
| 27 | fs->group_desc[group].bg_free_inodes_count -= inuse; | |
| 7f961d42 TT |
28 | if (isdir) |
| 29 | fs->group_desc[group].bg_used_dirs_count += inuse; | |
| d4f34d41 | 30 | |
| 5711ed29 | 31 | /* We don't strictly need to be clearing the uninit flag if inuse < 0 |
| d4f34d41 | 32 | * (i.e. freeing inodes) but it also means something is bad. */ |
| 5711ed29 | 33 | fs->group_desc[group].bg_flags &= ~EXT2_BG_INODE_UNINIT; |
| d4f34d41 JS |
34 | if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super, |
| 35 | EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) { | |
| 36 | ext2_ino_t first_unused_inode = fs->super->s_inodes_per_group - | |
| 37 | fs->group_desc[group].bg_itable_unused + | |
| 38 | group * fs->super->s_inodes_per_group + 1; | |
| 39 | ||
| 40 | if (ino >= first_unused_inode) | |
| 41 | fs->group_desc[group].bg_itable_unused = | |
| 42 | group * fs->super->s_inodes_per_group + | |
| 43 | fs->super->s_inodes_per_group - ino; | |
| d4f34d41 JS |
44 | ext2fs_group_desc_csum_set(fs, group); |
| 45 | } | |
| 46 | ||
| 8bd0c959 TT |
47 | fs->super->s_free_inodes_count -= inuse; |
| 48 | ext2fs_mark_super_dirty(fs); | |
| 49 | ext2fs_mark_ib_dirty(fs); | |
| 50 | } | |
| 51 | ||
| 7f961d42 TT |
52 | void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse) |
| 53 | { | |
| 54 | ext2fs_inode_alloc_stats2(fs, ino, inuse, 0); | |
| 55 | } | |
| 56 | ||
| 8bd0c959 TT |
57 | void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse) |
| 58 | { | |
| 59 | int group = ext2fs_group_of_blk(fs, blk); | |
| 60 | ||
| 61 | if (inuse > 0) | |
| 62 | ext2fs_mark_block_bitmap(fs->block_map, blk); | |
| 63 | else | |
| 64 | ext2fs_unmark_block_bitmap(fs->block_map, blk); | |
| 65 | fs->group_desc[group].bg_free_blocks_count -= inuse; | |
| d4f34d41 JS |
66 | fs->group_desc[group].bg_flags &= ~EXT2_BG_BLOCK_UNINIT; |
| 67 | ext2fs_group_desc_csum_set(fs, group); | |
| 68 | ||
| 8bd0c959 TT |
69 | fs->super->s_free_blocks_count -= inuse; |
| 70 | ext2fs_mark_super_dirty(fs); | |
| 71 | ext2fs_mark_bb_dirty(fs); | |
| f5c562e2 TT |
72 | if (fs->block_alloc_stats) |
| 73 | (fs->block_alloc_stats)(fs, (blk64_t) blk, inuse); | |
| 74 | } | |
| 75 | ||
| efc6f628 | 76 | void ext2fs_set_block_alloc_stats_callback(ext2_filsys fs, |
| f5c562e2 TT |
77 | void (*func)(ext2_filsys fs, |
| 78 | blk64_t blk, | |
| 79 | int inuse), | |
| 80 | void (**old)(ext2_filsys fs, | |
| 81 | blk64_t blk, | |
| 82 | int inuse)) | |
| 83 | { | |
| 84 | if (!fs || fs->magic != EXT2_ET_MAGIC_EXT2FS_FILSYS) | |
| 85 | return; | |
| 86 | if (old) | |
| 87 | *old = fs->block_alloc_stats; | |
| 88 | ||
| 89 | fs->block_alloc_stats = func; | |
| 8bd0c959 | 90 | } |