| /* |
| * swapfs.c --- swap ext2 filesystem data structures |
| * |
| * Copyright (C) 1995, 1996 Theodore Ts'o. |
| * |
| * %Begin-Header% |
| * This file may be redistributed under the terms of the GNU Public |
| * License. |
| * %End-Header% |
| */ |
| |
| #include <stdio.h> |
| #if HAVE_UNISTD_H |
| #include <unistd.h> |
| #endif |
| #include <stdlib.h> |
| #include <time.h> |
| |
| #include <linux/ext2_fs.h> |
| |
| #include "ext2fs.h" |
| |
| void ext2fs_swap_super(struct ext2_super_block * super) |
| { |
| struct ext2fs_sb *s = (struct ext2fs_sb *) super; |
| |
| super->s_inodes_count = ext2fs_swab32(super->s_inodes_count); |
| super->s_blocks_count = ext2fs_swab32(super->s_blocks_count); |
| super->s_r_blocks_count = ext2fs_swab32(super->s_r_blocks_count); |
| super->s_free_blocks_count = ext2fs_swab32(super->s_free_blocks_count); |
| super->s_free_inodes_count = ext2fs_swab32(super->s_free_inodes_count); |
| super->s_first_data_block = ext2fs_swab32(super->s_first_data_block); |
| super->s_log_block_size = ext2fs_swab32(super->s_log_block_size); |
| super->s_log_frag_size = ext2fs_swab32(super->s_log_frag_size); |
| super->s_blocks_per_group = ext2fs_swab32(super->s_blocks_per_group); |
| super->s_frags_per_group = ext2fs_swab32(super->s_frags_per_group); |
| super->s_inodes_per_group = ext2fs_swab32(super->s_inodes_per_group); |
| super->s_mtime = ext2fs_swab32(super->s_mtime); |
| super->s_wtime = ext2fs_swab32(super->s_wtime); |
| super->s_mnt_count = ext2fs_swab16(super->s_mnt_count); |
| super->s_max_mnt_count = ext2fs_swab16(super->s_max_mnt_count); |
| super->s_magic = ext2fs_swab16(super->s_magic); |
| super->s_state = ext2fs_swab16(super->s_state); |
| super->s_errors = ext2fs_swab16(super->s_errors); |
| s->s_minor_rev_level = ext2fs_swab16(s->s_minor_rev_level); |
| super->s_lastcheck = ext2fs_swab32(super->s_lastcheck); |
| super->s_checkinterval = ext2fs_swab32(super->s_checkinterval); |
| super->s_creator_os = ext2fs_swab32(super->s_creator_os); |
| super->s_rev_level = ext2fs_swab32(super->s_rev_level); |
| #ifdef EXT2_DEF_RESUID |
| super->s_def_resuid = ext2fs_swab16(super->s_def_resuid); |
| super->s_def_resgid = ext2fs_swab16(super->s_def_resgid); |
| #endif |
| s->s_first_ino = ext2fs_swab32(s->s_first_ino); |
| s->s_inode_size = ext2fs_swab16(s->s_inode_size); |
| s->s_block_group_nr = ext2fs_swab16(s->s_block_group_nr); |
| s->s_feature_compat = ext2fs_swab32(s->s_feature_compat); |
| s->s_feature_incompat = ext2fs_swab32(s->s_feature_incompat); |
| s->s_feature_ro_compat = ext2fs_swab32(s->s_feature_ro_compat); |
| } |
| |
| void ext2fs_swap_group_desc(struct ext2_group_desc *gdp) |
| { |
| gdp->bg_block_bitmap = ext2fs_swab32(gdp->bg_block_bitmap); |
| gdp->bg_inode_bitmap = ext2fs_swab32(gdp->bg_inode_bitmap); |
| gdp->bg_inode_table = ext2fs_swab32(gdp->bg_inode_table); |
| gdp->bg_free_blocks_count = ext2fs_swab16(gdp->bg_free_blocks_count); |
| gdp->bg_free_inodes_count = ext2fs_swab16(gdp->bg_free_inodes_count); |
| gdp->bg_used_dirs_count = ext2fs_swab16(gdp->bg_used_dirs_count); |
| } |
| |
| void ext2fs_swap_inode(ext2_filsys fs, struct ext2_inode *t, |
| struct ext2_inode *f, int hostorder) |
| { |
| unsigned i; |
| int islnk = 0; |
| |
| if (hostorder && LINUX_S_ISLNK(f->i_mode)) |
| islnk = 1; |
| t->i_mode = ext2fs_swab16(f->i_mode); |
| if (!hostorder && LINUX_S_ISLNK(t->i_mode)) |
| islnk = 1; |
| t->i_uid = ext2fs_swab16(f->i_uid); |
| t->i_size = ext2fs_swab32(f->i_size); |
| t->i_atime = ext2fs_swab32(f->i_atime); |
| t->i_ctime = ext2fs_swab32(f->i_ctime); |
| t->i_mtime = ext2fs_swab32(f->i_mtime); |
| t->i_dtime = ext2fs_swab32(f->i_dtime); |
| t->i_gid = ext2fs_swab16(f->i_gid); |
| t->i_links_count = ext2fs_swab16(f->i_links_count); |
| t->i_blocks = ext2fs_swab32(f->i_blocks); |
| t->i_flags = ext2fs_swab32(f->i_flags); |
| if (!islnk || f->i_blocks) { |
| for (i = 0; i < EXT2_N_BLOCKS; i++) |
| t->i_block[i] = ext2fs_swab32(f->i_block[i]); |
| } else if (t != f) { |
| for (i = 0; i < EXT2_N_BLOCKS; i++) |
| t->i_block[i] = f->i_block[i]; |
| } |
| t->i_version = ext2fs_swab32(f->i_version); |
| t->i_file_acl = ext2fs_swab32(f->i_file_acl); |
| t->i_dir_acl = ext2fs_swab32(f->i_dir_acl); |
| t->i_faddr = ext2fs_swab32(f->i_faddr); |
| |
| switch (fs->super->s_creator_os) { |
| case EXT2_OS_LINUX: |
| t->osd1.linux1.l_i_reserved1 = |
| ext2fs_swab32(f->osd1.linux1.l_i_reserved1); |
| t->osd2.linux2.l_i_frag = f->osd2.linux2.l_i_frag; |
| t->osd2.linux2.l_i_fsize = f->osd2.linux2.l_i_fsize; |
| t->osd2.linux2.i_pad1 = ext2fs_swab16(f->osd2.linux2.i_pad1); |
| t->osd2.linux2.l_i_reserved2[0] = |
| ext2fs_swab32(f->osd2.linux2.l_i_reserved2[0]); |
| t->osd2.linux2.l_i_reserved2[1] = |
| ext2fs_swab32(f->osd2.linux2.l_i_reserved2[1]); |
| break; |
| case EXT2_OS_HURD: |
| t->osd1.hurd1.h_i_translator = |
| ext2fs_swab32 (f->osd1.hurd1.h_i_translator); |
| t->osd2.hurd2.h_i_frag = f->osd2.hurd2.h_i_frag; |
| t->osd2.hurd2.h_i_fsize = f->osd2.hurd2.h_i_fsize; |
| t->osd2.hurd2.h_i_mode_high = |
| ext2fs_swab16 (f->osd2.hurd2.h_i_mode_high); |
| t->osd2.hurd2.h_i_uid_high = |
| ext2fs_swab16 (f->osd2.hurd2.h_i_uid_high); |
| t->osd2.hurd2.h_i_gid_high = |
| ext2fs_swab16 (f->osd2.hurd2.h_i_gid_high); |
| t->osd2.hurd2.h_i_author = |
| ext2fs_swab32 (f->osd2.hurd2.h_i_author); |
| break; |
| case EXT2_OS_MASIX: |
| t->osd1.masix1.m_i_reserved1 = |
| ext2fs_swab32(f->osd1.masix1.m_i_reserved1); |
| t->osd2.masix2.m_i_frag = f->osd2.masix2.m_i_frag; |
| t->osd2.masix2.m_i_fsize = f->osd2.masix2.m_i_fsize; |
| t->osd2.masix2.m_pad1 = ext2fs_swab16(f->osd2.masix2.m_pad1); |
| t->osd2.masix2.m_i_reserved2[0] = |
| ext2fs_swab32(f->osd2.masix2.m_i_reserved2[0]); |
| t->osd2.masix2.m_i_reserved2[1] = |
| ext2fs_swab32(f->osd2.masix2.m_i_reserved2[1]); |
| break; |
| } |
| } |
| |