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Commit | Line | Data |
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50e1e10f TT |
1 | /* |
2 | * swapfs.c --- swap ext2 filesystem data structures | |
3 | * | |
19c78dc0 TT |
4 | * Copyright (C) 1995, 1996 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% | |
50e1e10f TT |
10 | */ |
11 | ||
12 | #include <stdio.h> | |
4cbe8af4 | 13 | #if HAVE_UNISTD_H |
50e1e10f | 14 | #include <unistd.h> |
4cbe8af4 | 15 | #endif |
50e1e10f TT |
16 | #include <time.h> |
17 | ||
b5abe6fa TT |
18 | #if EXT2_FLAT_INCLUDES |
19 | #include "ext2_fs.h" | |
20 | #else | |
50e1e10f | 21 | #include <linux/ext2_fs.h> |
b5abe6fa | 22 | #endif |
50e1e10f TT |
23 | |
24 | #include "ext2fs.h" | |
25 | ||
26 | void ext2fs_swap_super(struct ext2_super_block * super) | |
27 | { | |
1e3472c5 TT |
28 | struct ext2fs_sb *s = (struct ext2fs_sb *) super; |
29 | ||
50e1e10f TT |
30 | super->s_inodes_count = ext2fs_swab32(super->s_inodes_count); |
31 | super->s_blocks_count = ext2fs_swab32(super->s_blocks_count); | |
32 | super->s_r_blocks_count = ext2fs_swab32(super->s_r_blocks_count); | |
33 | super->s_free_blocks_count = ext2fs_swab32(super->s_free_blocks_count); | |
34 | super->s_free_inodes_count = ext2fs_swab32(super->s_free_inodes_count); | |
35 | super->s_first_data_block = ext2fs_swab32(super->s_first_data_block); | |
36 | super->s_log_block_size = ext2fs_swab32(super->s_log_block_size); | |
37 | super->s_log_frag_size = ext2fs_swab32(super->s_log_frag_size); | |
38 | super->s_blocks_per_group = ext2fs_swab32(super->s_blocks_per_group); | |
39 | super->s_frags_per_group = ext2fs_swab32(super->s_frags_per_group); | |
40 | super->s_inodes_per_group = ext2fs_swab32(super->s_inodes_per_group); | |
41 | super->s_mtime = ext2fs_swab32(super->s_mtime); | |
42 | super->s_wtime = ext2fs_swab32(super->s_wtime); | |
43 | super->s_mnt_count = ext2fs_swab16(super->s_mnt_count); | |
44 | super->s_max_mnt_count = ext2fs_swab16(super->s_max_mnt_count); | |
45 | super->s_magic = ext2fs_swab16(super->s_magic); | |
46 | super->s_state = ext2fs_swab16(super->s_state); | |
47 | super->s_errors = ext2fs_swab16(super->s_errors); | |
1e3472c5 | 48 | s->s_minor_rev_level = ext2fs_swab16(s->s_minor_rev_level); |
50e1e10f TT |
49 | super->s_lastcheck = ext2fs_swab32(super->s_lastcheck); |
50 | super->s_checkinterval = ext2fs_swab32(super->s_checkinterval); | |
51 | super->s_creator_os = ext2fs_swab32(super->s_creator_os); | |
52 | super->s_rev_level = ext2fs_swab32(super->s_rev_level); | |
53 | #ifdef EXT2_DEF_RESUID | |
54 | super->s_def_resuid = ext2fs_swab16(super->s_def_resuid); | |
55 | super->s_def_resgid = ext2fs_swab16(super->s_def_resgid); | |
56 | #endif | |
1e3472c5 TT |
57 | s->s_first_ino = ext2fs_swab32(s->s_first_ino); |
58 | s->s_inode_size = ext2fs_swab16(s->s_inode_size); | |
59 | s->s_block_group_nr = ext2fs_swab16(s->s_block_group_nr); | |
60 | s->s_feature_compat = ext2fs_swab32(s->s_feature_compat); | |
61 | s->s_feature_incompat = ext2fs_swab32(s->s_feature_incompat); | |
62 | s->s_feature_ro_compat = ext2fs_swab32(s->s_feature_ro_compat); | |
50e1e10f TT |
63 | } |
64 | ||
65 | void ext2fs_swap_group_desc(struct ext2_group_desc *gdp) | |
66 | { | |
67 | gdp->bg_block_bitmap = ext2fs_swab32(gdp->bg_block_bitmap); | |
68 | gdp->bg_inode_bitmap = ext2fs_swab32(gdp->bg_inode_bitmap); | |
69 | gdp->bg_inode_table = ext2fs_swab32(gdp->bg_inode_table); | |
70 | gdp->bg_free_blocks_count = ext2fs_swab16(gdp->bg_free_blocks_count); | |
71 | gdp->bg_free_inodes_count = ext2fs_swab16(gdp->bg_free_inodes_count); | |
72 | gdp->bg_used_dirs_count = ext2fs_swab16(gdp->bg_used_dirs_count); | |
73 | } | |
74 | ||
1e3472c5 TT |
75 | void ext2fs_swap_inode(ext2_filsys fs, struct ext2_inode *t, |
76 | struct ext2_inode *f, int hostorder) | |
77 | { | |
78 | unsigned i; | |
79 | int islnk = 0; | |
50e1e10f | 80 | |
1e3472c5 TT |
81 | if (hostorder && LINUX_S_ISLNK(f->i_mode)) |
82 | islnk = 1; | |
83 | t->i_mode = ext2fs_swab16(f->i_mode); | |
84 | if (!hostorder && LINUX_S_ISLNK(t->i_mode)) | |
85 | islnk = 1; | |
86 | t->i_uid = ext2fs_swab16(f->i_uid); | |
87 | t->i_size = ext2fs_swab32(f->i_size); | |
88 | t->i_atime = ext2fs_swab32(f->i_atime); | |
89 | t->i_ctime = ext2fs_swab32(f->i_ctime); | |
90 | t->i_mtime = ext2fs_swab32(f->i_mtime); | |
91 | t->i_dtime = ext2fs_swab32(f->i_dtime); | |
92 | t->i_gid = ext2fs_swab16(f->i_gid); | |
93 | t->i_links_count = ext2fs_swab16(f->i_links_count); | |
94 | t->i_blocks = ext2fs_swab32(f->i_blocks); | |
95 | t->i_flags = ext2fs_swab32(f->i_flags); | |
96 | if (!islnk || f->i_blocks) { | |
97 | for (i = 0; i < EXT2_N_BLOCKS; i++) | |
98 | t->i_block[i] = ext2fs_swab32(f->i_block[i]); | |
99 | } else if (t != f) { | |
100 | for (i = 0; i < EXT2_N_BLOCKS; i++) | |
101 | t->i_block[i] = f->i_block[i]; | |
102 | } | |
e72a9ba3 | 103 | #if defined(HAVE_EXT2_INODE_VERSION) |
1e3472c5 | 104 | t->i_version = ext2fs_swab32(f->i_version); |
e72a9ba3 TT |
105 | #else |
106 | t->i_generation = ext2fs_swab32(f->i_generation); | |
107 | #endif | |
1e3472c5 TT |
108 | t->i_file_acl = ext2fs_swab32(f->i_file_acl); |
109 | t->i_dir_acl = ext2fs_swab32(f->i_dir_acl); | |
110 | t->i_faddr = ext2fs_swab32(f->i_faddr); | |
50e1e10f | 111 | |
1e3472c5 TT |
112 | switch (fs->super->s_creator_os) { |
113 | case EXT2_OS_LINUX: | |
19c78dc0 TT |
114 | t->osd1.linux1.l_i_reserved1 = |
115 | ext2fs_swab32(f->osd1.linux1.l_i_reserved1); | |
1e3472c5 TT |
116 | t->osd2.linux2.l_i_frag = f->osd2.linux2.l_i_frag; |
117 | t->osd2.linux2.l_i_fsize = f->osd2.linux2.l_i_fsize; | |
118 | t->osd2.linux2.i_pad1 = ext2fs_swab16(f->osd2.linux2.i_pad1); | |
19c78dc0 TT |
119 | t->osd2.linux2.l_i_reserved2[0] = |
120 | ext2fs_swab32(f->osd2.linux2.l_i_reserved2[0]); | |
121 | t->osd2.linux2.l_i_reserved2[1] = | |
122 | ext2fs_swab32(f->osd2.linux2.l_i_reserved2[1]); | |
1e3472c5 TT |
123 | break; |
124 | case EXT2_OS_HURD: | |
125 | t->osd1.hurd1.h_i_translator = | |
126 | ext2fs_swab32 (f->osd1.hurd1.h_i_translator); | |
127 | t->osd2.hurd2.h_i_frag = f->osd2.hurd2.h_i_frag; | |
128 | t->osd2.hurd2.h_i_fsize = f->osd2.hurd2.h_i_fsize; | |
129 | t->osd2.hurd2.h_i_mode_high = | |
130 | ext2fs_swab16 (f->osd2.hurd2.h_i_mode_high); | |
131 | t->osd2.hurd2.h_i_uid_high = | |
132 | ext2fs_swab16 (f->osd2.hurd2.h_i_uid_high); | |
133 | t->osd2.hurd2.h_i_gid_high = | |
134 | ext2fs_swab16 (f->osd2.hurd2.h_i_gid_high); | |
135 | t->osd2.hurd2.h_i_author = | |
136 | ext2fs_swab32 (f->osd2.hurd2.h_i_author); | |
137 | break; | |
138 | case EXT2_OS_MASIX: | |
19c78dc0 TT |
139 | t->osd1.masix1.m_i_reserved1 = |
140 | ext2fs_swab32(f->osd1.masix1.m_i_reserved1); | |
1e3472c5 TT |
141 | t->osd2.masix2.m_i_frag = f->osd2.masix2.m_i_frag; |
142 | t->osd2.masix2.m_i_fsize = f->osd2.masix2.m_i_fsize; | |
143 | t->osd2.masix2.m_pad1 = ext2fs_swab16(f->osd2.masix2.m_pad1); | |
19c78dc0 TT |
144 | t->osd2.masix2.m_i_reserved2[0] = |
145 | ext2fs_swab32(f->osd2.masix2.m_i_reserved2[0]); | |
146 | t->osd2.masix2.m_i_reserved2[1] = | |
147 | ext2fs_swab32(f->osd2.masix2.m_i_reserved2[1]); | |
1e3472c5 TT |
148 | break; |
149 | } | |
150 | } | |
151 |