ref: c11957a7915d355d80ff7e6a21721ba05441ca29
dir: /libnandfs/readpageauxilliary.c/
#include "logfsos.h" #include "logfs.h" #include "nandfs.h" #include "local.h" static int countzeros(uchar byte) { int b, count; for (b = 0x80, count = 0; b; b>>= 1) if ((byte & b) == 0) count++; return count; } char * nandfsreadpageauxiliary(Nandfs *nandfs, NandfsTags *tags, long block, int page, int correct, LogfsLowLevelReadResult *result) { NandfsAuxiliary hdr; char *rv; rv = (*nandfs->read)(nandfs->magic, &hdr, sizeof(hdr), nandfs->rawblocksize * (nandfs->baseblock + block) + page * NandfsFullSize + NandfsPageSize); if (rv) return rv; if (countzeros(hdr.blockstatus) > 2) { *result = LogfsLowLevelReadResultBad; return nil; } if (correct) *result = _nandfscorrectauxiliary(&hdr); else *result = LogfsLowLevelReadResultOk; _nandfsextracttags(&hdr, tags); return nil; }