put small subset of e2fsprogs back in the tree:

lsattr, chattr, fsck. Old e2fsprogs tree is in
e2fsprogs/old_e2fsprogs/*.

1 files changed, 264 insertions, 0 deletions

diff --git a/e2fsprogs/old_e2fsprogs/ext2fs/bmap.c b/e2fsprogs/old_e2fsprogs/ext2fs/bmap.c
new file mode 100644
index 0000000..b22fe3d
--- /dev/null
+++ b/e2fsprogs/old_e2fsprogs/ext2fs/bmap.c
@@ -0,0 +1,264 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * bmap.c --- logical to physical block mapping
+ *
+ * Copyright (C) 1997 Theodore Ts'o.
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Public
+ * License.
+ * %End-Header%
+ */
+
+#include <stdio.h>
+#include <string.h>
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include "ext2_fs.h"
+#include "ext2fs.h"
+
+extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino,
+			     struct ext2_inode *inode,
+			     char *block_buf, int bmap_flags,
+			     blk_t block, blk_t *phys_blk);
+
+#define inode_bmap(inode, nr) ((inode)->i_block[(nr)])
+
+static errcode_t block_ind_bmap(ext2_filsys fs, int flags,
+					      blk_t ind, char *block_buf,
+					      int *blocks_alloc,
+					      blk_t nr, blk_t *ret_blk)
+{
+	errcode_t	retval;
+	blk_t		b;
+
+	if (!ind) {
+		if (flags & BMAP_SET)
+			return EXT2_ET_SET_BMAP_NO_IND;
+		*ret_blk = 0;
+		return 0;
+	}
+	retval = io_channel_read_blk(fs->io, ind, 1, block_buf);
+	if (retval)
+		return retval;
+
+	if (flags & BMAP_SET) {
+		b = *ret_blk;
+#if BB_BIG_ENDIAN
+		if ((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
+		    (fs->flags & EXT2_FLAG_SWAP_BYTES_WRITE))
+			b = ext2fs_swab32(b);
+#endif
+		((blk_t *) block_buf)[nr] = b;
+		return io_channel_write_blk(fs->io, ind, 1, block_buf);
+	}
+
+	b = ((blk_t *) block_buf)[nr];
+
+#if BB_BIG_ENDIAN
+	if ((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
+	    (fs->flags & EXT2_FLAG_SWAP_BYTES_READ))
+		b = ext2fs_swab32(b);
+#endif
+
+	if (!b && (flags & BMAP_ALLOC)) {
+		b = nr ? ((blk_t *) block_buf)[nr-1] : 0;
+		retval = ext2fs_alloc_block(fs, b,
+					    block_buf + fs->blocksize, &b);
+		if (retval)
+			return retval;
+
+#if BB_BIG_ENDIAN
+		if ((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
+		    (fs->flags & EXT2_FLAG_SWAP_BYTES_WRITE))
+			((blk_t *) block_buf)[nr] = ext2fs_swab32(b);
+		else
+#endif
+			((blk_t *) block_buf)[nr] = b;
+
+		retval = io_channel_write_blk(fs->io, ind, 1, block_buf);
+		if (retval)
+			return retval;
+
+		(*blocks_alloc)++;
+	}
+
+	*ret_blk = b;
+	return 0;
+}
+
+static errcode_t block_dind_bmap(ext2_filsys fs, int flags,
+					       blk_t dind, char *block_buf,
+					       int *blocks_alloc,
+					       blk_t nr, blk_t *ret_blk)
+{
+	blk_t		b;
+	errcode_t	retval;
+	blk_t		addr_per_block;
+
+	addr_per_block = (blk_t) fs->blocksize >> 2;
+
+	retval = block_ind_bmap(fs, flags & ~BMAP_SET, dind, block_buf,
+				blocks_alloc, nr / addr_per_block, &b);
+	if (retval)
+		return retval;
+	retval = block_ind_bmap(fs, flags, b, block_buf, blocks_alloc,
+				nr % addr_per_block, ret_blk);
+	return retval;
+}
+
+static errcode_t block_tind_bmap(ext2_filsys fs, int flags,
+					       blk_t tind, char *block_buf,
+					       int *blocks_alloc,
+					       blk_t nr, blk_t *ret_blk)
+{
+	blk_t		b;
+	errcode_t	retval;
+	blk_t		addr_per_block;
+
+	addr_per_block = (blk_t) fs->blocksize >> 2;
+
+	retval = block_dind_bmap(fs, flags & ~BMAP_SET, tind, block_buf,
+				 blocks_alloc, nr / addr_per_block, &b);
+	if (retval)
+		return retval;
+	retval = block_ind_bmap(fs, flags, b, block_buf, blocks_alloc,
+				nr % addr_per_block, ret_blk);
+	return retval;
+}
+
+errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, struct ext2_inode *inode,
+		      char *block_buf, int bmap_flags, blk_t block,
+		      blk_t *phys_blk)
+{
+	struct ext2_inode inode_buf;
+	blk_t addr_per_block;
+	blk_t	b;
+	char	*buf = 0;
+	errcode_t	retval = 0;
+	int		blocks_alloc = 0, inode_dirty = 0;
+
+	if (!(bmap_flags & BMAP_SET))
+		*phys_blk = 0;
+
+	/* Read inode structure if necessary */
+	if (!inode) {
+		retval = ext2fs_read_inode(fs, ino, &inode_buf);
+		if (retval)
+			return retval;
+		inode = &inode_buf;
+	}
+	addr_per_block = (blk_t) fs->blocksize >> 2;
+
+	if (!block_buf) {
+		retval = ext2fs_get_mem(fs->blocksize * 2, &buf);
+		if (retval)
+			return retval;
+		block_buf = buf;
+	}
+
+	if (block < EXT2_NDIR_BLOCKS) {
+		if (bmap_flags & BMAP_SET) {
+			b = *phys_blk;
+#if BB_BIG_ENDIAN
+			if ((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
+			    (fs->flags & EXT2_FLAG_SWAP_BYTES_READ))
+				b = ext2fs_swab32(b);
+#endif
+			inode_bmap(inode, block) = b;
+			inode_dirty++;
+			goto done;
+		}
+
+		*phys_blk = inode_bmap(inode, block);
+		b = block ? inode_bmap(inode, block-1) : 0;
+
+		if ((*phys_blk == 0) && (bmap_flags & BMAP_ALLOC)) {
+			retval = ext2fs_alloc_block(fs, b, block_buf, &b);
+			if (retval)
+				goto done;
+			inode_bmap(inode, block) = b;
+			blocks_alloc++;
+			*phys_blk = b;
+		}
+		goto done;
+	}
+
+	/* Indirect block */
+	block -= EXT2_NDIR_BLOCKS;
+	if (block < addr_per_block) {
+		b = inode_bmap(inode, EXT2_IND_BLOCK);
+		if (!b) {
+			if (!(bmap_flags & BMAP_ALLOC)) {
+				if (bmap_flags & BMAP_SET)
+					retval = EXT2_ET_SET_BMAP_NO_IND;
+				goto done;
+			}
+
+			b = inode_bmap(inode, EXT2_IND_BLOCK-1);
+			retval = ext2fs_alloc_block(fs, b, block_buf, &b);
+			if (retval)
+				goto done;
+			inode_bmap(inode, EXT2_IND_BLOCK) = b;
+			blocks_alloc++;
+		}
+		retval = block_ind_bmap(fs, bmap_flags, b, block_buf,
+					&blocks_alloc, block, phys_blk);
+		goto done;
+	}
+
+	/* Doubly indirect block  */
+	block -= addr_per_block;
+	if (block < addr_per_block * addr_per_block) {
+		b = inode_bmap(inode, EXT2_DIND_BLOCK);
+		if (!b) {
+			if (!(bmap_flags & BMAP_ALLOC)) {
+				if (bmap_flags & BMAP_SET)
+					retval = EXT2_ET_SET_BMAP_NO_IND;
+				goto done;
+			}
+
+			b = inode_bmap(inode, EXT2_IND_BLOCK);
+			retval = ext2fs_alloc_block(fs, b, block_buf, &b);
+			if (retval)
+				goto done;
+			inode_bmap(inode, EXT2_DIND_BLOCK) = b;
+			blocks_alloc++;
+		}
+		retval = block_dind_bmap(fs, bmap_flags, b, block_buf,
+					 &blocks_alloc, block, phys_blk);
+		goto done;
+	}
+
+	/* Triply indirect block */
+	block -= addr_per_block * addr_per_block;
+	b = inode_bmap(inode, EXT2_TIND_BLOCK);
+	if (!b) {
+		if (!(bmap_flags & BMAP_ALLOC)) {
+			if (bmap_flags & BMAP_SET)
+				retval = EXT2_ET_SET_BMAP_NO_IND;
+			goto done;
+		}
+
+		b = inode_bmap(inode, EXT2_DIND_BLOCK);
+		retval = ext2fs_alloc_block(fs, b, block_buf, &b);
+		if (retval)
+			goto done;
+		inode_bmap(inode, EXT2_TIND_BLOCK) = b;
+		blocks_alloc++;
+	}
+	retval = block_tind_bmap(fs, bmap_flags, b, block_buf,
+				 &blocks_alloc, block, phys_blk);
+done:
+	ext2fs_free_mem(&buf);
+	if ((retval == 0) && (blocks_alloc || inode_dirty)) {
+		inode->i_blocks += (blocks_alloc * fs->blocksize) / 512;
+		retval = ext2fs_write_inode(fs, ino, inode);
+	}
+	return retval;
+}
+
+
+