119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project/* 219dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project * swapfs.c --- swap ext2 filesystem data structures 33984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt * 419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project * Copyright (C) 1995, 1996, 2002 Theodore Ts'o. 519dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project * 619dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project * %Begin-Header% 78558eab78390d1924cd6b255686ceef133f294d5Ken Sumrall * This file may be redistributed under the terms of the GNU Library 88558eab78390d1924cd6b255686ceef133f294d5Ken Sumrall * General Public License, version 2. 919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project * %End-Header% 1019dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project */ 1119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project 1219dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project#include <stdio.h> 1319dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project#if HAVE_UNISTD_H 1419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project#include <unistd.h> 1519dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project#endif 1619dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project#include <string.h> 1719dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project#include <time.h> 1819dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project 1919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project#include "ext2_fs.h" 2019dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project#include "ext2fs.h" 2119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project#include <ext2fs/ext2_ext_attr.h> 2219dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project 233984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt#ifdef WORDS_BIGENDIAN 2419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Projectvoid ext2fs_swap_super(struct ext2_super_block * sb) 2519dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project{ 2619dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project int i; 2719dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_inodes_count = ext2fs_swab32(sb->s_inodes_count); 2819dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_blocks_count = ext2fs_swab32(sb->s_blocks_count); 2919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_r_blocks_count = ext2fs_swab32(sb->s_r_blocks_count); 3019dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_free_blocks_count = ext2fs_swab32(sb->s_free_blocks_count); 3119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_free_inodes_count = ext2fs_swab32(sb->s_free_inodes_count); 3219dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_first_data_block = ext2fs_swab32(sb->s_first_data_block); 3319dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_log_block_size = ext2fs_swab32(sb->s_log_block_size); 3419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_log_frag_size = ext2fs_swab32(sb->s_log_frag_size); 3519dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_blocks_per_group = ext2fs_swab32(sb->s_blocks_per_group); 3619dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_frags_per_group = ext2fs_swab32(sb->s_frags_per_group); 3719dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_inodes_per_group = ext2fs_swab32(sb->s_inodes_per_group); 3819dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_mtime = ext2fs_swab32(sb->s_mtime); 3919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_wtime = ext2fs_swab32(sb->s_wtime); 4019dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_mnt_count = ext2fs_swab16(sb->s_mnt_count); 4119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_max_mnt_count = ext2fs_swab16(sb->s_max_mnt_count); 4219dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_magic = ext2fs_swab16(sb->s_magic); 4319dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_state = ext2fs_swab16(sb->s_state); 4419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_errors = ext2fs_swab16(sb->s_errors); 4519dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_minor_rev_level = ext2fs_swab16(sb->s_minor_rev_level); 4619dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_lastcheck = ext2fs_swab32(sb->s_lastcheck); 4719dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_checkinterval = ext2fs_swab32(sb->s_checkinterval); 4819dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_creator_os = ext2fs_swab32(sb->s_creator_os); 4919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_rev_level = ext2fs_swab32(sb->s_rev_level); 5019dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_def_resuid = ext2fs_swab16(sb->s_def_resuid); 5119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_def_resgid = ext2fs_swab16(sb->s_def_resgid); 5219dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_first_ino = ext2fs_swab32(sb->s_first_ino); 5319dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_inode_size = ext2fs_swab16(sb->s_inode_size); 5419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_block_group_nr = ext2fs_swab16(sb->s_block_group_nr); 5519dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_feature_compat = ext2fs_swab32(sb->s_feature_compat); 5619dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_feature_incompat = ext2fs_swab32(sb->s_feature_incompat); 5719dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_feature_ro_compat = ext2fs_swab32(sb->s_feature_ro_compat); 5819dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_algorithm_usage_bitmap = ext2fs_swab32(sb->s_algorithm_usage_bitmap); 5919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_reserved_gdt_blocks = ext2fs_swab16(sb->s_reserved_gdt_blocks); 6019dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_journal_inum = ext2fs_swab32(sb->s_journal_inum); 6119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_journal_dev = ext2fs_swab32(sb->s_journal_dev); 6219dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_last_orphan = ext2fs_swab32(sb->s_last_orphan); 6319dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_desc_size = ext2fs_swab16(sb->s_desc_size); 6419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_default_mount_opts = ext2fs_swab32(sb->s_default_mount_opts); 6519dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_first_meta_bg = ext2fs_swab32(sb->s_first_meta_bg); 6619dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_mkfs_time = ext2fs_swab32(sb->s_mkfs_time); 6719dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_blocks_count_hi = ext2fs_swab32(sb->s_blocks_count_hi); 6819dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_r_blocks_count_hi = ext2fs_swab32(sb->s_r_blocks_count_hi); 6919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_free_blocks_hi = ext2fs_swab32(sb->s_free_blocks_hi); 7019dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_min_extra_isize = ext2fs_swab16(sb->s_min_extra_isize); 7119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_want_extra_isize = ext2fs_swab16(sb->s_want_extra_isize); 7219dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_flags = ext2fs_swab32(sb->s_flags); 733984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt sb->s_kbytes_written = ext2fs_swab64(sb->s_kbytes_written); 748558eab78390d1924cd6b255686ceef133f294d5Ken Sumrall sb->s_snapshot_inum = ext2fs_swab32(sb->s_snapshot_inum); 758558eab78390d1924cd6b255686ceef133f294d5Ken Sumrall sb->s_snapshot_id = ext2fs_swab32(sb->s_snapshot_id); 768558eab78390d1924cd6b255686ceef133f294d5Ken Sumrall sb->s_snapshot_r_blocks_count = 778558eab78390d1924cd6b255686ceef133f294d5Ken Sumrall ext2fs_swab64(sb->s_snapshot_r_blocks_count); 788558eab78390d1924cd6b255686ceef133f294d5Ken Sumrall sb->s_snapshot_list = ext2fs_swab32(sb->s_snapshot_list); 798558eab78390d1924cd6b255686ceef133f294d5Ken Sumrall 8019dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project for (i=0; i < 4; i++) 8119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_hash_seed[i] = ext2fs_swab32(sb->s_hash_seed[i]); 823984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt 833984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt /* if journal backup is for a valid extent-based journal... */ 843984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt if (!ext2fs_extent_header_verify(sb->s_jnl_blocks, 853984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt sizeof(sb->s_jnl_blocks))) { 863984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt /* ... swap only the journal i_size */ 873984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt sb->s_jnl_blocks[16] = ext2fs_swab32(sb->s_jnl_blocks[16]); 883984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt /* and the extent data is not swapped on read */ 893984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt return; 903984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt } 913984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt 923984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt /* direct/indirect journal: swap it all */ 9319dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project for (i=0; i < 17; i++) 9419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sb->s_jnl_blocks[i] = ext2fs_swab32(sb->s_jnl_blocks[i]); 9519dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project} 9619dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project 9719dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Projectvoid ext2fs_swap_group_desc(struct ext2_group_desc *gdp) 9819dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project{ 9919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project gdp->bg_block_bitmap = ext2fs_swab32(gdp->bg_block_bitmap); 10019dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project gdp->bg_inode_bitmap = ext2fs_swab32(gdp->bg_inode_bitmap); 10119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project gdp->bg_inode_table = ext2fs_swab32(gdp->bg_inode_table); 10219dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project gdp->bg_free_blocks_count = ext2fs_swab16(gdp->bg_free_blocks_count); 10319dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project gdp->bg_free_inodes_count = ext2fs_swab16(gdp->bg_free_inodes_count); 10419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project gdp->bg_used_dirs_count = ext2fs_swab16(gdp->bg_used_dirs_count); 10519dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project gdp->bg_flags = ext2fs_swab16(gdp->bg_flags); 10619dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project gdp->bg_itable_unused = ext2fs_swab16(gdp->bg_itable_unused); 10719dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project gdp->bg_checksum = ext2fs_swab16(gdp->bg_checksum); 10819dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project} 10919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project 1103984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidtvoid ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header, 1113984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt struct ext2_ext_attr_header *from_header) 1123984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt{ 1133984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt int n; 1143984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt 1153984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt to_header->h_magic = ext2fs_swab32(from_header->h_magic); 1163984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt to_header->h_blocks = ext2fs_swab32(from_header->h_blocks); 1173984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt to_header->h_refcount = ext2fs_swab32(from_header->h_refcount); 1183984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt to_header->h_hash = ext2fs_swab32(from_header->h_hash); 1193984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt for (n = 0; n < 4; n++) 1203984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt to_header->h_reserved[n] = 1213984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt ext2fs_swab32(from_header->h_reserved[n]); 1223984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt} 1233984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt 1243984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidtvoid ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry, 1253984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt struct ext2_ext_attr_entry *from_entry) 1263984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt{ 1273984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt to_entry->e_value_offs = ext2fs_swab16(from_entry->e_value_offs); 1283984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt to_entry->e_value_block = ext2fs_swab32(from_entry->e_value_block); 1293984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt to_entry->e_value_size = ext2fs_swab32(from_entry->e_value_size); 1303984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt to_entry->e_hash = ext2fs_swab32(from_entry->e_hash); 1313984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt} 1323984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt 13319dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Projectvoid ext2fs_swap_ext_attr(char *to, char *from, int bufsize, int has_header) 13419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project{ 13519dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project struct ext2_ext_attr_header *from_header = 13619dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project (struct ext2_ext_attr_header *)from; 13719dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project struct ext2_ext_attr_header *to_header = 13819dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project (struct ext2_ext_attr_header *)to; 13919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project struct ext2_ext_attr_entry *from_entry, *to_entry; 14019dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project char *from_end = (char *)from_header + bufsize; 14119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project 14219dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project if (to_header != from_header) 14319dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project memcpy(to_header, from_header, bufsize); 14419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project 14519dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project if (has_header) { 1463984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt ext2fs_swap_ext_attr_header(to_header, from_header); 1473984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt 14819dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project from_entry = (struct ext2_ext_attr_entry *)(from_header+1); 14919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project to_entry = (struct ext2_ext_attr_entry *)(to_header+1); 1503984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt } else { 1513984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt from_entry = (struct ext2_ext_attr_entry *)from_header; 1523984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt to_entry = (struct ext2_ext_attr_entry *)to_header; 15319dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project } 15419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project 15519dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project while ((char *)from_entry < from_end && *(__u32 *)from_entry) { 1563984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt ext2fs_swap_ext_attr_entry(to_entry, from_entry); 15719dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project from_entry = EXT2_EXT_ATTR_NEXT(from_entry); 15819dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project to_entry = EXT2_EXT_ATTR_NEXT(to_entry); 15919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project } 16019dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project} 16119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project 16219dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Projectvoid ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t, 16319dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project struct ext2_inode_large *f, int hostorder, 16419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project int bufsize) 16519dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project{ 1663984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt unsigned i, has_data_blocks, extra_isize, attr_magic; 1673984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt int has_extents = 0; 16819dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project int islnk = 0; 16919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project __u32 *eaf, *eat; 17019dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project 17119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project if (hostorder && LINUX_S_ISLNK(f->i_mode)) 17219dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project islnk = 1; 17319dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->i_mode = ext2fs_swab16(f->i_mode); 17419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project if (!hostorder && LINUX_S_ISLNK(t->i_mode)) 17519dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project islnk = 1; 17619dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->i_uid = ext2fs_swab16(f->i_uid); 17719dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->i_size = ext2fs_swab32(f->i_size); 17819dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->i_atime = ext2fs_swab32(f->i_atime); 17919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->i_ctime = ext2fs_swab32(f->i_ctime); 18019dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->i_mtime = ext2fs_swab32(f->i_mtime); 18119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->i_dtime = ext2fs_swab32(f->i_dtime); 18219dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->i_gid = ext2fs_swab16(f->i_gid); 18319dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->i_links_count = ext2fs_swab16(f->i_links_count); 18419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->i_file_acl = ext2fs_swab32(f->i_file_acl); 18519dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project if (hostorder) 1863984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt has_data_blocks = ext2fs_inode_data_blocks(fs, 18719dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project (struct ext2_inode *) f); 18819dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->i_blocks = ext2fs_swab32(f->i_blocks); 18919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project if (!hostorder) 1903984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt has_data_blocks = ext2fs_inode_data_blocks(fs, 19119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project (struct ext2_inode *) t); 1923984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt if (hostorder && (f->i_flags & EXT4_EXTENTS_FL)) 1933984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt has_extents = 1; 19419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->i_flags = ext2fs_swab32(f->i_flags); 1953984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt if (!hostorder && (t->i_flags & EXT4_EXTENTS_FL)) 1963984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt has_extents = 1; 19719dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->i_dir_acl = ext2fs_swab32(f->i_dir_acl); 1983984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt /* extent data are swapped on access, not here */ 1993984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt if (!has_extents && (!islnk || has_data_blocks)) { 20019dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project for (i = 0; i < EXT2_N_BLOCKS; i++) 20119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->i_block[i] = ext2fs_swab32(f->i_block[i]); 20219dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project } else if (t != f) { 20319dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project for (i = 0; i < EXT2_N_BLOCKS; i++) 20419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->i_block[i] = f->i_block[i]; 20519dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project } 20619dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->i_generation = ext2fs_swab32(f->i_generation); 20719dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->i_faddr = ext2fs_swab32(f->i_faddr); 20819dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project 20919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project switch (fs->super->s_creator_os) { 21019dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project case EXT2_OS_LINUX: 21119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->osd1.linux1.l_i_version = 21219dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project ext2fs_swab32(f->osd1.linux1.l_i_version); 2133984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt t->osd2.linux2.l_i_blocks_hi = 21419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project ext2fs_swab16(f->osd2.linux2.l_i_blocks_hi); 2153984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt t->osd2.linux2.l_i_file_acl_high = 2163984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt ext2fs_swab16(f->osd2.linux2.l_i_file_acl_high); 21719dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->osd2.linux2.l_i_uid_high = 21819dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project ext2fs_swab16 (f->osd2.linux2.l_i_uid_high); 21919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->osd2.linux2.l_i_gid_high = 22019dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project ext2fs_swab16 (f->osd2.linux2.l_i_gid_high); 22119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->osd2.linux2.l_i_reserved2 = 22219dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project ext2fs_swab32(f->osd2.linux2.l_i_reserved2); 22319dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project break; 22419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project case EXT2_OS_HURD: 22519dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->osd1.hurd1.h_i_translator = 22619dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project ext2fs_swab32 (f->osd1.hurd1.h_i_translator); 22719dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->osd2.hurd2.h_i_frag = f->osd2.hurd2.h_i_frag; 22819dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->osd2.hurd2.h_i_fsize = f->osd2.hurd2.h_i_fsize; 22919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->osd2.hurd2.h_i_mode_high = 23019dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project ext2fs_swab16 (f->osd2.hurd2.h_i_mode_high); 23119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->osd2.hurd2.h_i_uid_high = 23219dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project ext2fs_swab16 (f->osd2.hurd2.h_i_uid_high); 23319dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->osd2.hurd2.h_i_gid_high = 23419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project ext2fs_swab16 (f->osd2.hurd2.h_i_gid_high); 23519dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->osd2.hurd2.h_i_author = 23619dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project ext2fs_swab32 (f->osd2.hurd2.h_i_author); 23719dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project break; 2383984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt default: 23919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project break; 24019dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project } 24119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project 24219dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project if (bufsize < (int) (sizeof(struct ext2_inode) + sizeof(__u16))) 24319dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project return; /* no i_extra_isize field */ 24419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project 24519dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project if (hostorder) 24619dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project extra_isize = f->i_extra_isize; 24719dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project t->i_extra_isize = ext2fs_swab16(f->i_extra_isize); 24819dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project if (!hostorder) 24919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project extra_isize = t->i_extra_isize; 25019dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project if (extra_isize > EXT2_INODE_SIZE(fs->super) - 25119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sizeof(struct ext2_inode)) { 25219dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project /* this is error case: i_extra_size is too large */ 25319dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project return; 25419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project } 25519dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project 25619dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project i = sizeof(struct ext2_inode) + extra_isize + sizeof(__u32); 25719dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project if (bufsize < (int) i) 25819dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project return; /* no space for EA magic */ 25919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project 26019dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project eaf = (__u32 *) (((char *) f) + sizeof(struct ext2_inode) + 26119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project extra_isize); 26219dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project 2633984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt attr_magic = *eaf; 2643984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt if (!hostorder) 2653984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt attr_magic = ext2fs_swab32(attr_magic); 2663984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt 2673984b61df41c68966bdfbb2a5e5a45ef4b9a536cDmitry Shmidt if (attr_magic != EXT2_EXT_ATTR_MAGIC) 26819dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project return; /* it seems no magic here */ 26919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project 27019dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project eat = (__u32 *) (((char *) t) + sizeof(struct ext2_inode) + 27119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project extra_isize); 27219dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project *eat = ext2fs_swab32(*eaf); 27319dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project 27419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project /* convert EA(s) */ 27519dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project ext2fs_swap_ext_attr((char *) (eat + 1), (char *) (eaf + 1), 27619dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project bufsize - sizeof(struct ext2_inode) - 27719dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project extra_isize - sizeof(__u32), 0); 27819dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project 27919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project} 28019dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project 28119dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Projectvoid ext2fs_swap_inode(ext2_filsys fs, struct ext2_inode *t, 28219dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project struct ext2_inode *f, int hostorder) 28319dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project{ 28419dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project ext2fs_swap_inode_full(fs, (struct ext2_inode_large *) t, 28519dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project (struct ext2_inode_large *) f, hostorder, 28619dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project sizeof(struct ext2_inode)); 28719dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project} 28819dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project 28919dacda2b02bb08c0ffb649f84526b249c749279The Android Open Source Project#endif 290