Esempi in C++ (Cpp) per ext2fs_extent_set_bmap

Esempio n. 1

File: extent_inode.c Progetto: Angeloyd/e2fsprogs

void do_set_bmap(int argc, char **argv)
{
	const char	*usage = "[--uninit] <lblk> <pblk>";
	struct ext2fs_extent extent;
	errcode_t	retval;
	blk_t		logical;
	blk_t		physical;
	char		*cmd = argv[0];
	int		flags = 0;
	int		err;

	if (common_extent_args_process(argc, argv, 3, 5, "set_bmap",
				       usage, CHECK_FS_RW | CHECK_FS_BITMAPS))
		return;

	if (argc > 2 && !strcmp(argv[1], "--uninit")) {
		argc--;
		argv++;
		flags |= EXT2_EXTENT_SET_BMAP_UNINIT;
	}

	if (argc != 3) {
		fprintf(stderr, "Usage: %s %s\n", cmd, usage);
		return;
	}

	logical = parse_ulong(argv[1], cmd,
				    "logical block", &err);
	if (err)
		return;

	physical = parse_ulong(argv[2], cmd,
				    "physical block", &err);
	if (err)
		return;

	retval = ext2fs_extent_set_bmap(current_handle, logical,
					(blk64_t) physical, flags);
	if (retval) {
		com_err(cmd, retval, 0);
		return;
	}

	retval = ext2fs_extent_get(current_handle, EXT2_EXTENT_CURRENT,
				   &extent);
	if (retval)
		return;
	dbg_print_extent(0, &extent);
}

Esempio n. 2

File: mkdir.c Progetto: AOSP-JF/platform_external_e2fsprogs

errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum,
		       const char *name)
{
	ext2_extent_handle_t	handle;
	errcode_t		retval;
	struct ext2_inode	parent_inode, inode;
	ext2_ino_t		ino = inum;
	ext2_ino_t		scratch_ino;
	blk64_t			blk;
	char			*block = 0;

	EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);

	/*
	 * Allocate an inode, if necessary
	 */
	if (!ino) {
		retval = ext2fs_new_inode(fs, parent, LINUX_S_IFDIR | 0755,
					  0, &ino);
		if (retval)
			goto cleanup;
	}

	/*
	 * Allocate a data block for the directory
	 */
	retval = ext2fs_new_block2(fs, 0, 0, &blk);
	if (retval)
		goto cleanup;

	/*
	 * Create a scratch template for the directory
	 */
	retval = ext2fs_new_dir_block(fs, ino, parent, &block);
	if (retval)
		goto cleanup;

	/*
	 * Get the parent's inode, if necessary
	 */
	if (parent != ino) {
		retval = ext2fs_read_inode(fs, parent, &parent_inode);
		if (retval)
			goto cleanup;
	} else
		memset(&parent_inode, 0, sizeof(parent_inode));

	/*
	 * Create the inode structure....
	 */
	memset(&inode, 0, sizeof(struct ext2_inode));
	inode.i_mode = LINUX_S_IFDIR | (0777 & ~fs->umask);
	inode.i_uid = inode.i_gid = 0;
	ext2fs_iblk_set(fs, &inode, 1);
	if (fs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_EXTENTS)
		inode.i_flags |= EXT4_EXTENTS_FL;
	else
		inode.i_block[0] = blk;
	inode.i_links_count = 2;
	inode.i_size = fs->blocksize;

	/*
	 * Write out the inode and inode data block
	 */
	retval = ext2fs_write_dir_block(fs, blk, block);
	if (retval)
		goto cleanup;
	retval = ext2fs_write_new_inode(fs, ino, &inode);
	if (retval)
		goto cleanup;

	if (fs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_EXTENTS) {
		retval = ext2fs_extent_open2(fs, ino, &inode, &handle);
		if (retval)
			goto cleanup;
		retval = ext2fs_extent_set_bmap(handle, 0, blk, 0);
		ext2fs_extent_free(handle);
		if (retval)
			goto cleanup;
	}

	/*
	 * Link the directory into the filesystem hierarchy
	 */
	if (name) {
		retval = ext2fs_lookup(fs, parent, name, strlen(name), 0,
				       &scratch_ino);
		if (!retval) {
			retval = EXT2_ET_DIR_EXISTS;
			name = 0;
			goto cleanup;
		}
		if (retval != EXT2_ET_FILE_NOT_FOUND)
			goto cleanup;
		retval = ext2fs_link(fs, parent, name, ino, EXT2_FT_DIR);
		if (retval)
			goto cleanup;
	}

	/*
	 * Update parent inode's counts
	 */
	if (parent != ino) {
		parent_inode.i_links_count++;
		retval = ext2fs_write_inode(fs, parent, &parent_inode);
		if (retval)
			goto cleanup;
	}

	/*
	 * Update accounting....
	 */
	ext2fs_block_alloc_stats2(fs, blk, +1);
	ext2fs_inode_alloc_stats2(fs, ino, +1, 1);

cleanup:
	if (block)
		ext2fs_free_mem(&block);
	return retval;

}