view ffstools/tiffs-rd/struct.h @ 718:098fea21ba13

doc/Host-tools-overview: tiffs-mkfs description updated The first version of tiffs-mkfs did not include a journal file in the created FFS, expecting the firmware to create it on first boot. All historical firmwares prior to a recent FC fix (2020-05) contain a bug in that code path, thus images made with the first version of tiffs-mkfs were only acceptable to very recent FC firmwares. tiffs-mkfs has now been extended to include an empty journal in the created FFS, thus the restriction of working with recent fw only has been lifted.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 23 Aug 2020 04:55:02 +0000
parents e7502631a0f9
children
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/* actual TIFFS on-media structure */
struct inode_flash {
	u16	len;
	u8	reserved1;
	u8	type;
	u16	descend;
	u16	sibling;
	u32	dataptr;
	u16	sequence;
	u16	updates;
};

struct journal_entry {
	u8	status;
	u8	objtype;
	u16	this_ino;
	u16	link_ptr;
	u16	replacee;
	u32	location;
	u16	size;
	u16	repli;	/* ??? */
};

/* our own distilled info struct */
struct inode_info {
	int	ino;
	/* info from the inode record */
	int	type;
	int	descend;
	int	sibling;
	u16	len;
	u32	rawloc;
	u32	offset;
	u8	*dataptr;
	/* filled by treewalk */
	int	nparents;
	int	parent;
	/* filled by misc */
	u8	*byte_after_name;
};

/* chunk location and size info */
struct chunkinfo {
	u8	*start;
	u8	*end;
	size_t	len;
};