ref: 7975eec3e602fd5bc3e93c78f4166259190f2fe9
dir: /libnandfs/updatepage.c/
#include "logfsos.h" #include "logfs.h" #include "nandfs.h" #include "nandecc.h" #include "local.h" char * nandfsupdatepage(Nandfs *nandfs, void *buf, ulong path, uchar tag, long block, int page) { uchar tbuf[NandfsFullSize]; ulong ecc1, ecc2; ulong rawoffset; NandfsAuxiliary *hdr; rawoffset = (nandfs->baseblock + block) * nandfs->rawblocksize + page * NandfsFullSize; memmove(tbuf, buf, NandfsPageSize); ecc1 = nandecc(tbuf); ecc2 = nandecc(tbuf + 256); hdr = (NandfsAuxiliary *)(tbuf + NandfsPageSize); memset(hdr, 0xff, sizeof(*hdr)); hdr->tag = tag; if (path < NandfsPathMask) { ulong tmp = _nandfshamming31_26calc(path << 6) | (1 << 5); putbig4(hdr->parth, tmp); } putlittle3(hdr->ecc1, ecc1); putlittle3(hdr->ecc2, ecc2); return (*nandfs->write)(nandfs->magic, tbuf, sizeof(tbuf), rawoffset); } char * nandfswritepage(Nandfs *nandfs, void *buf, long block, int page) { ulong writepath = nandfsgetpath(nandfs, block); uchar writetag = nandfsgettag(nandfs, block); //print("block %ld writepath 0x%.8lux writetag 0x%.2ux\n", block, writepath, writetag); return nandfsupdatepage(nandfs, buf, writepath, writetag, block, page); }