1 files changed, 236 insertions, 0 deletions

diff --git a/release/src/router/busybox/e2fsprogs/old_e2fsprogs/ext2fs/swapfs.c b/release/src/router/busybox/e2fsprogs/old_e2fsprogs/ext2fs/swapfs.c
new file mode 100644
index 00000000..2fca3cfb
--- /dev/null
+++ b/release/src/router/busybox/e2fsprogs/old_e2fsprogs/ext2fs/swapfs.c
@@ -0,0 +1,236 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * swapfs.c --- swap ext2 filesystem data structures
+ *
+ * Copyright (C) 1995, 1996, 2002 Theodore Ts'o.
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Public
+ * License.
+ * %End-Header%
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <time.h>
+
+#include "ext2_fs.h"
+#include "ext2fs.h"
+#include "ext2_ext_attr.h"
+
+#if BB_BIG_ENDIAN
+void ext2fs_swap_super(struct ext2_super_block * sb)
+{
+	int i;
+	sb->s_inodes_count = ext2fs_swab32(sb->s_inodes_count);
+	sb->s_blocks_count = ext2fs_swab32(sb->s_blocks_count);
+	sb->s_r_blocks_count = ext2fs_swab32(sb->s_r_blocks_count);
+	sb->s_free_blocks_count = ext2fs_swab32(sb->s_free_blocks_count);
+	sb->s_free_inodes_count = ext2fs_swab32(sb->s_free_inodes_count);
+	sb->s_first_data_block = ext2fs_swab32(sb->s_first_data_block);
+	sb->s_log_block_size = ext2fs_swab32(sb->s_log_block_size);
+	sb->s_log_frag_size = ext2fs_swab32(sb->s_log_frag_size);
+	sb->s_blocks_per_group = ext2fs_swab32(sb->s_blocks_per_group);
+	sb->s_frags_per_group = ext2fs_swab32(sb->s_frags_per_group);
+	sb->s_inodes_per_group = ext2fs_swab32(sb->s_inodes_per_group);
+	sb->s_mtime = ext2fs_swab32(sb->s_mtime);
+	sb->s_wtime = ext2fs_swab32(sb->s_wtime);
+	sb->s_mnt_count = ext2fs_swab16(sb->s_mnt_count);
+	sb->s_max_mnt_count = ext2fs_swab16(sb->s_max_mnt_count);
+	sb->s_magic = ext2fs_swab16(sb->s_magic);
+	sb->s_state = ext2fs_swab16(sb->s_state);
+	sb->s_errors = ext2fs_swab16(sb->s_errors);
+	sb->s_minor_rev_level = ext2fs_swab16(sb->s_minor_rev_level);
+	sb->s_lastcheck = ext2fs_swab32(sb->s_lastcheck);
+	sb->s_checkinterval = ext2fs_swab32(sb->s_checkinterval);
+	sb->s_creator_os = ext2fs_swab32(sb->s_creator_os);
+	sb->s_rev_level = ext2fs_swab32(sb->s_rev_level);
+	sb->s_def_resuid = ext2fs_swab16(sb->s_def_resuid);
+	sb->s_def_resgid = ext2fs_swab16(sb->s_def_resgid);
+	sb->s_first_ino = ext2fs_swab32(sb->s_first_ino);
+	sb->s_inode_size = ext2fs_swab16(sb->s_inode_size);
+	sb->s_block_group_nr = ext2fs_swab16(sb->s_block_group_nr);
+	sb->s_feature_compat = ext2fs_swab32(sb->s_feature_compat);
+	sb->s_feature_incompat = ext2fs_swab32(sb->s_feature_incompat);
+	sb->s_feature_ro_compat = ext2fs_swab32(sb->s_feature_ro_compat);
+	sb->s_algorithm_usage_bitmap = ext2fs_swab32(sb->s_algorithm_usage_bitmap);
+	sb->s_reserved_gdt_blocks = ext2fs_swab16(sb->s_reserved_gdt_blocks);
+	sb->s_journal_inum = ext2fs_swab32(sb->s_journal_inum);
+	sb->s_journal_dev = ext2fs_swab32(sb->s_journal_dev);
+	sb->s_last_orphan = ext2fs_swab32(sb->s_last_orphan);
+	sb->s_default_mount_opts = ext2fs_swab32(sb->s_default_mount_opts);
+	sb->s_first_meta_bg = ext2fs_swab32(sb->s_first_meta_bg);
+	sb->s_mkfs_time = ext2fs_swab32(sb->s_mkfs_time);
+	for (i=0; i < 4; i++)
+		sb->s_hash_seed[i] = ext2fs_swab32(sb->s_hash_seed[i]);
+	for (i=0; i < 17; i++)
+		sb->s_jnl_blocks[i] = ext2fs_swab32(sb->s_jnl_blocks[i]);
+
+}
+
+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_ext_attr(char *to, char *from, int bufsize, int has_header)
+{
+	struct ext2_ext_attr_header *from_header =
+		(struct ext2_ext_attr_header *)from;
+	struct ext2_ext_attr_header *to_header =
+		(struct ext2_ext_attr_header *)to;
+	struct ext2_ext_attr_entry *from_entry, *to_entry;
+	char *from_end = (char *)from_header + bufsize;
+	int n;
+
+	if (to_header != from_header)
+		memcpy(to_header, from_header, bufsize);
+
+	from_entry = (struct ext2_ext_attr_entry *)from_header;
+	to_entry   = (struct ext2_ext_attr_entry *)to_header;
+
+	if (has_header) {
+		to_header->h_magic    = ext2fs_swab32(from_header->h_magic);
+		to_header->h_blocks   = ext2fs_swab32(from_header->h_blocks);
+		to_header->h_refcount = ext2fs_swab32(from_header->h_refcount);
+		for (n=0; n<4; n++)
+			to_header->h_reserved[n] =
+				ext2fs_swab32(from_header->h_reserved[n]);
+		from_entry = (struct ext2_ext_attr_entry *)(from_header+1);
+		to_entry   = (struct ext2_ext_attr_entry *)(to_header+1);
+	}
+
+	while ((char *)from_entry < from_end && *(__u32 *)from_entry) {
+		to_entry->e_value_offs  =
+			ext2fs_swab16(from_entry->e_value_offs);
+		to_entry->e_value_block =
+			ext2fs_swab32(from_entry->e_value_block);
+		to_entry->e_value_size  =
+			ext2fs_swab32(from_entry->e_value_size);
+		from_entry = EXT2_EXT_ATTR_NEXT(from_entry);
+		to_entry   = EXT2_EXT_ATTR_NEXT(to_entry);
+	}
+}
+
+void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
+			    struct ext2_inode_large *f, int hostorder,
+			    int bufsize)
+{
+	unsigned i;
+	int islnk = 0;
+	__u32 *eaf, *eat;
+
+	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);
+	t->i_file_acl = ext2fs_swab32(f->i_file_acl);
+	t->i_dir_acl = ext2fs_swab32(f->i_dir_acl);
+	if (!islnk || ext2fs_inode_data_blocks(fs, (struct ext2_inode *)t)) {
+		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_generation = ext2fs_swab32(f->i_generation);
+	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_uid_high =
+		  ext2fs_swab16 (f->osd2.linux2.l_i_uid_high);
+		t->osd2.linux2.l_i_gid_high =
+		  ext2fs_swab16 (f->osd2.linux2.l_i_gid_high);
+		t->osd2.linux2.l_i_reserved2 =
+			ext2fs_swab32(f->osd2.linux2.l_i_reserved2);
+		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;
+	}
+
+	if (bufsize < (int) (sizeof(struct ext2_inode) + sizeof(__u16)))
+		return; /* no i_extra_isize field */
+
+	t->i_extra_isize = ext2fs_swab16(f->i_extra_isize);
+	if (t->i_extra_isize > EXT2_INODE_SIZE(fs->super) -
+				sizeof(struct ext2_inode)) {
+		/* this is error case: i_extra_size is too large */
+		return;
+	}
+
+	i = sizeof(struct ext2_inode) + t->i_extra_isize + sizeof(__u32);
+	if (bufsize < (int) i)
+		return; /* no space for EA magic */
+
+	eaf = (__u32 *) (((char *) f) + sizeof(struct ext2_inode) +
+					f->i_extra_isize);
+
+	if (ext2fs_swab32(*eaf) != EXT2_EXT_ATTR_MAGIC)
+		return; /* it seems no magic here */
+
+	eat = (__u32 *) (((char *) t) + sizeof(struct ext2_inode) +
+					f->i_extra_isize);
+	*eat = ext2fs_swab32(*eaf);
+
+	/* convert EA(s) */
+	ext2fs_swap_ext_attr((char *) (eat + 1), (char *) (eaf + 1),
+			     bufsize - sizeof(struct ext2_inode) -
+			     t->i_extra_isize - sizeof(__u32), 0);
+
+}
+
+void ext2fs_swap_inode(ext2_filsys fs, struct ext2_inode *t,
+		       struct ext2_inode *f, int hostorder)
+{
+	ext2fs_swap_inode_full(fs, (struct ext2_inode_large *) t,
+				(struct ext2_inode_large *) f, hostorder,
+				sizeof(struct ext2_inode));
+}
+
+#endif