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-rw-r--r--e2fsprogs/ext2fs/swapfs.c236
1 files changed, 0 insertions, 236 deletions
diff --git a/e2fsprogs/ext2fs/swapfs.c b/e2fsprogs/ext2fs/swapfs.c
deleted file mode 100644
index 2fca3cfbb..000000000
--- a/e2fsprogs/ext2fs/swapfs.c
+++ /dev/null
@@ -1,236 +0,0 @@
1/* vi: set sw=4 ts=4: */
2/*
3 * swapfs.c --- swap ext2 filesystem data structures
4 *
5 * Copyright (C) 1995, 1996, 2002 Theodore Ts'o.
6 *
7 * %Begin-Header%
8 * This file may be redistributed under the terms of the GNU Public
9 * License.
10 * %End-Header%
11 */
12
13#include <stdio.h>
14#include <unistd.h>
15#include <string.h>
16#include <time.h>
17
18#include "ext2_fs.h"
19#include "ext2fs.h"
20#include "ext2_ext_attr.h"
21
22#if BB_BIG_ENDIAN
23void ext2fs_swap_super(struct ext2_super_block * sb)
24{
25 int i;
26 sb->s_inodes_count = ext2fs_swab32(sb->s_inodes_count);
27 sb->s_blocks_count = ext2fs_swab32(sb->s_blocks_count);
28 sb->s_r_blocks_count = ext2fs_swab32(sb->s_r_blocks_count);
29 sb->s_free_blocks_count = ext2fs_swab32(sb->s_free_blocks_count);
30 sb->s_free_inodes_count = ext2fs_swab32(sb->s_free_inodes_count);
31 sb->s_first_data_block = ext2fs_swab32(sb->s_first_data_block);
32 sb->s_log_block_size = ext2fs_swab32(sb->s_log_block_size);
33 sb->s_log_frag_size = ext2fs_swab32(sb->s_log_frag_size);
34 sb->s_blocks_per_group = ext2fs_swab32(sb->s_blocks_per_group);
35 sb->s_frags_per_group = ext2fs_swab32(sb->s_frags_per_group);
36 sb->s_inodes_per_group = ext2fs_swab32(sb->s_inodes_per_group);
37 sb->s_mtime = ext2fs_swab32(sb->s_mtime);
38 sb->s_wtime = ext2fs_swab32(sb->s_wtime);
39 sb->s_mnt_count = ext2fs_swab16(sb->s_mnt_count);
40 sb->s_max_mnt_count = ext2fs_swab16(sb->s_max_mnt_count);
41 sb->s_magic = ext2fs_swab16(sb->s_magic);
42 sb->s_state = ext2fs_swab16(sb->s_state);
43 sb->s_errors = ext2fs_swab16(sb->s_errors);
44 sb->s_minor_rev_level = ext2fs_swab16(sb->s_minor_rev_level);
45 sb->s_lastcheck = ext2fs_swab32(sb->s_lastcheck);
46 sb->s_checkinterval = ext2fs_swab32(sb->s_checkinterval);
47 sb->s_creator_os = ext2fs_swab32(sb->s_creator_os);
48 sb->s_rev_level = ext2fs_swab32(sb->s_rev_level);
49 sb->s_def_resuid = ext2fs_swab16(sb->s_def_resuid);
50 sb->s_def_resgid = ext2fs_swab16(sb->s_def_resgid);
51 sb->s_first_ino = ext2fs_swab32(sb->s_first_ino);
52 sb->s_inode_size = ext2fs_swab16(sb->s_inode_size);
53 sb->s_block_group_nr = ext2fs_swab16(sb->s_block_group_nr);
54 sb->s_feature_compat = ext2fs_swab32(sb->s_feature_compat);
55 sb->s_feature_incompat = ext2fs_swab32(sb->s_feature_incompat);
56 sb->s_feature_ro_compat = ext2fs_swab32(sb->s_feature_ro_compat);
57 sb->s_algorithm_usage_bitmap = ext2fs_swab32(sb->s_algorithm_usage_bitmap);
58 sb->s_reserved_gdt_blocks = ext2fs_swab16(sb->s_reserved_gdt_blocks);
59 sb->s_journal_inum = ext2fs_swab32(sb->s_journal_inum);
60 sb->s_journal_dev = ext2fs_swab32(sb->s_journal_dev);
61 sb->s_last_orphan = ext2fs_swab32(sb->s_last_orphan);
62 sb->s_default_mount_opts = ext2fs_swab32(sb->s_default_mount_opts);
63 sb->s_first_meta_bg = ext2fs_swab32(sb->s_first_meta_bg);
64 sb->s_mkfs_time = ext2fs_swab32(sb->s_mkfs_time);
65 for (i=0; i < 4; i++)
66 sb->s_hash_seed[i] = ext2fs_swab32(sb->s_hash_seed[i]);
67 for (i=0; i < 17; i++)
68 sb->s_jnl_blocks[i] = ext2fs_swab32(sb->s_jnl_blocks[i]);
69
70}
71
72void ext2fs_swap_group_desc(struct ext2_group_desc *gdp)
73{
74 gdp->bg_block_bitmap = ext2fs_swab32(gdp->bg_block_bitmap);
75 gdp->bg_inode_bitmap = ext2fs_swab32(gdp->bg_inode_bitmap);
76 gdp->bg_inode_table = ext2fs_swab32(gdp->bg_inode_table);
77 gdp->bg_free_blocks_count = ext2fs_swab16(gdp->bg_free_blocks_count);
78 gdp->bg_free_inodes_count = ext2fs_swab16(gdp->bg_free_inodes_count);
79 gdp->bg_used_dirs_count = ext2fs_swab16(gdp->bg_used_dirs_count);
80}
81
82void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, int has_header)
83{
84 struct ext2_ext_attr_header *from_header =
85 (struct ext2_ext_attr_header *)from;
86 struct ext2_ext_attr_header *to_header =
87 (struct ext2_ext_attr_header *)to;
88 struct ext2_ext_attr_entry *from_entry, *to_entry;
89 char *from_end = (char *)from_header + bufsize;
90 int n;
91
92 if (to_header != from_header)
93 memcpy(to_header, from_header, bufsize);
94
95 from_entry = (struct ext2_ext_attr_entry *)from_header;
96 to_entry = (struct ext2_ext_attr_entry *)to_header;
97
98 if (has_header) {
99 to_header->h_magic = ext2fs_swab32(from_header->h_magic);
100 to_header->h_blocks = ext2fs_swab32(from_header->h_blocks);
101 to_header->h_refcount = ext2fs_swab32(from_header->h_refcount);
102 for (n=0; n<4; n++)
103 to_header->h_reserved[n] =
104 ext2fs_swab32(from_header->h_reserved[n]);
105 from_entry = (struct ext2_ext_attr_entry *)(from_header+1);
106 to_entry = (struct ext2_ext_attr_entry *)(to_header+1);
107 }
108
109 while ((char *)from_entry < from_end && *(__u32 *)from_entry) {
110 to_entry->e_value_offs =
111 ext2fs_swab16(from_entry->e_value_offs);
112 to_entry->e_value_block =
113 ext2fs_swab32(from_entry->e_value_block);
114 to_entry->e_value_size =
115 ext2fs_swab32(from_entry->e_value_size);
116 from_entry = EXT2_EXT_ATTR_NEXT(from_entry);
117 to_entry = EXT2_EXT_ATTR_NEXT(to_entry);
118 }
119}
120
121void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
122 struct ext2_inode_large *f, int hostorder,
123 int bufsize)
124{
125 unsigned i;
126 int islnk = 0;
127 __u32 *eaf, *eat;
128
129 if (hostorder && LINUX_S_ISLNK(f->i_mode))
130 islnk = 1;
131 t->i_mode = ext2fs_swab16(f->i_mode);
132 if (!hostorder && LINUX_S_ISLNK(t->i_mode))
133 islnk = 1;
134 t->i_uid = ext2fs_swab16(f->i_uid);
135 t->i_size = ext2fs_swab32(f->i_size);
136 t->i_atime = ext2fs_swab32(f->i_atime);
137 t->i_ctime = ext2fs_swab32(f->i_ctime);
138 t->i_mtime = ext2fs_swab32(f->i_mtime);
139 t->i_dtime = ext2fs_swab32(f->i_dtime);
140 t->i_gid = ext2fs_swab16(f->i_gid);
141 t->i_links_count = ext2fs_swab16(f->i_links_count);
142 t->i_blocks = ext2fs_swab32(f->i_blocks);
143 t->i_flags = ext2fs_swab32(f->i_flags);
144 t->i_file_acl = ext2fs_swab32(f->i_file_acl);
145 t->i_dir_acl = ext2fs_swab32(f->i_dir_acl);
146 if (!islnk || ext2fs_inode_data_blocks(fs, (struct ext2_inode *)t)) {
147 for (i = 0; i < EXT2_N_BLOCKS; i++)
148 t->i_block[i] = ext2fs_swab32(f->i_block[i]);
149 } else if (t != f) {
150 for (i = 0; i < EXT2_N_BLOCKS; i++)
151 t->i_block[i] = f->i_block[i];
152 }
153 t->i_generation = ext2fs_swab32(f->i_generation);
154 t->i_faddr = ext2fs_swab32(f->i_faddr);
155
156 switch (fs->super->s_creator_os) {
157 case EXT2_OS_LINUX:
158 t->osd1.linux1.l_i_reserved1 =
159 ext2fs_swab32(f->osd1.linux1.l_i_reserved1);
160 t->osd2.linux2.l_i_frag = f->osd2.linux2.l_i_frag;
161 t->osd2.linux2.l_i_fsize = f->osd2.linux2.l_i_fsize;
162 t->osd2.linux2.i_pad1 = ext2fs_swab16(f->osd2.linux2.i_pad1);
163 t->osd2.linux2.l_i_uid_high =
164 ext2fs_swab16 (f->osd2.linux2.l_i_uid_high);
165 t->osd2.linux2.l_i_gid_high =
166 ext2fs_swab16 (f->osd2.linux2.l_i_gid_high);
167 t->osd2.linux2.l_i_reserved2 =
168 ext2fs_swab32(f->osd2.linux2.l_i_reserved2);
169 break;
170 case EXT2_OS_HURD:
171 t->osd1.hurd1.h_i_translator =
172 ext2fs_swab32 (f->osd1.hurd1.h_i_translator);
173 t->osd2.hurd2.h_i_frag = f->osd2.hurd2.h_i_frag;
174 t->osd2.hurd2.h_i_fsize = f->osd2.hurd2.h_i_fsize;
175 t->osd2.hurd2.h_i_mode_high =
176 ext2fs_swab16 (f->osd2.hurd2.h_i_mode_high);
177 t->osd2.hurd2.h_i_uid_high =
178 ext2fs_swab16 (f->osd2.hurd2.h_i_uid_high);
179 t->osd2.hurd2.h_i_gid_high =
180 ext2fs_swab16 (f->osd2.hurd2.h_i_gid_high);
181 t->osd2.hurd2.h_i_author =
182 ext2fs_swab32 (f->osd2.hurd2.h_i_author);
183 break;
184 case EXT2_OS_MASIX:
185 t->osd1.masix1.m_i_reserved1 =
186 ext2fs_swab32(f->osd1.masix1.m_i_reserved1);
187 t->osd2.masix2.m_i_frag = f->osd2.masix2.m_i_frag;
188 t->osd2.masix2.m_i_fsize = f->osd2.masix2.m_i_fsize;
189 t->osd2.masix2.m_pad1 = ext2fs_swab16(f->osd2.masix2.m_pad1);
190 t->osd2.masix2.m_i_reserved2[0] =
191 ext2fs_swab32(f->osd2.masix2.m_i_reserved2[0]);
192 t->osd2.masix2.m_i_reserved2[1] =
193 ext2fs_swab32(f->osd2.masix2.m_i_reserved2[1]);
194 break;
195 }
196
197 if (bufsize < (int) (sizeof(struct ext2_inode) + sizeof(__u16)))
198 return; /* no i_extra_isize field */
199
200 t->i_extra_isize = ext2fs_swab16(f->i_extra_isize);
201 if (t->i_extra_isize > EXT2_INODE_SIZE(fs->super) -
202 sizeof(struct ext2_inode)) {
203 /* this is error case: i_extra_size is too large */
204 return;
205 }
206
207 i = sizeof(struct ext2_inode) + t->i_extra_isize + sizeof(__u32);
208 if (bufsize < (int) i)
209 return; /* no space for EA magic */
210
211 eaf = (__u32 *) (((char *) f) + sizeof(struct ext2_inode) +
212 f->i_extra_isize);
213
214 if (ext2fs_swab32(*eaf) != EXT2_EXT_ATTR_MAGIC)
215 return; /* it seems no magic here */
216
217 eat = (__u32 *) (((char *) t) + sizeof(struct ext2_inode) +
218 f->i_extra_isize);
219 *eat = ext2fs_swab32(*eaf);
220
221 /* convert EA(s) */
222 ext2fs_swap_ext_attr((char *) (eat + 1), (char *) (eaf + 1),
223 bufsize - sizeof(struct ext2_inode) -
224 t->i_extra_isize - sizeof(__u32), 0);
225
226}
227
228void ext2fs_swap_inode(ext2_filsys fs, struct ext2_inode *t,
229 struct ext2_inode *f, int hostorder)
230{
231 ext2fs_swap_inode_full(fs, (struct ext2_inode_large *) t,
232 (struct ext2_inode_large *) f, hostorder,
233 sizeof(struct ext2_inode));
234}
235
236#endif
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-08-14 13:21:31 +0000