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#include "logfsos.h"
#include "logfs.h"
#include "nandfs.h"
#include "local.h"
char *
nandfswriteblock(Nandfs *nandfs, void *buf, uchar tag, ulong path, int xcount, long *data, long block)
{
int p;
char *errmsg;
ulong opath = nandfsgetpath(nandfs, block);
ulong writepath = (~opath | path) & NandfsPathMask;
uchar writetag = ~nandfsgettag(nandfs, block) | tag;
int ppb = 1 << nandfs->ll.l2pagesperblock;
for (p = 0; p < ppb; p++) {
ulong wp;
if (p > 0 && p <= 2 + xcount) {
switch (p) {
case 1:
wp = (~opath | nandfsgetbaseblock(nandfs)) & NandfsPathMask;
break;
case 2:
wp = (~opath | nandfs->ll.blocks) & NandfsPathMask;
break;
default:
wp = (~opath | data[p - 3]) & NandfsPathMask;
break;
}
}
else
wp = writepath;
errmsg = nandfsupdatepage(nandfs, buf, wp, writetag, block, p);
if (errmsg)
return errmsg;
#ifdef LOGFSTEST
if (logfstest.partialupdate && p > 0) {
print("skipping pageupdate\n");
break;
}
#endif
buf = (uchar *)buf + NandfsPageSize;
}
return nil;
}
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