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typedef struct NandfsBlockData {
ulong path;
short tag;
ulong nerase;
int partial;
} NandfsBlockData;
struct Nandfs {
LogfsLowLevel ll;
char *(*read)(void *magic, void *buf, long nbytes, ulong offset);
char *(*write)(void *magic, void *buf, long nbytes, ulong offset);
char *(*erase)(void *magic, long blockaddr);
char *(*sync)(void *magic);
void *magic;
long rawblocksize;
long baseblock;
long limitblock;
NandfsBlockData *blockdata;
int trace;
int worseblocks;
int printbad;
};
typedef struct NandfsAuxiliary {
uchar parth[4]; // ggpppppp pppppppp pppppppp pp1hhhhh (bigendian) self-protected
uchar tag; // self-protecting
uchar blockstatus; // self-protecting
uchar nerasemagicmsw[2]; // see nerasemagiclsw
uchar ecc2[3]; // self-protecting
uchar nerasemagiclsw[2]; // mmmmmm mmeeeeee eeeeeeeeee ee1hhhhh (bigendian) self-protected
uchar ecc1[3]; // self-protecting
} NandfsAuxiliary;
#define getbig2(p) (((p)[0] << 8) | (p)[1])
#define getbig4(p) (((p)[0] << 24) | ((p)[1] << 16) | ((p)[2] << 8) | (p)[3])
#define getlittle3(p) (((p)[2] << 16) | ((p)[1] << 8) | (p)[0])
#define putlittle3(p, q) ((p)[0] = (q), (p)[1] = (q) >> 8, (p)[2] = (q) >> 16)
#define putbig2(p, q) ((p)[0] = (q) >> 8, (p)[1] = (q))
#define putbig4(p, q) ((p)[0] = (q) >> 24, (p)[1] = (q) >> 16, (p)[2] = (q) >> 8, (p)[3] = (q))
LogfsLowLevelReadResult _nandfscorrectauxiliary(NandfsAuxiliary *hdr);
extern uchar _nandfsvalidtags[];
extern int _nandfsvalidtagscount;
ulong _nandfshamming31_26calc(ulong in);
int _nandfshamming31_26correct(ulong *in);
void _nandfsextracttags(NandfsAuxiliary *hdr, NandfsTags *tags);
extern char Enomem[], Eperm[], Eio[];
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