inferno-os tree was separated from the inferno-os-android (separated from the Android driver)

1 files changed, 36 insertions, 0 deletions

diff --git a/libnandfs/readblock.c b/libnandfs/readblock.c
new file mode 100644
index 0000000..4c4d9f7
--- /dev/null
+++ b/libnandfs/readblock.c
@@ -0,0 +1,36 @@
+#include "logfsos.h"
+#include "logfs.h"
+#include "nandfs.h"
+#include "local.h"
+
+char *
+nandfsreadblock(Nandfs *nandfs, void *buf, long block, LogfsLowLevelReadResult *blocke)
+{
+	int p;
+	uchar *bp;
+	int ppb;
+
+	*blocke = LogfsLowLevelReadResultOk;
+	ppb = 1 << nandfs->ll.l2pagesperblock;
+	for (p = 0, bp = buf; p < ppb; p++, bp += NandfsPageSize) {
+		LogfsLowLevelReadResult e;
+		char *errmsg;
+		errmsg = nandfsreadpage(nandfs, bp, nil, block, p, nandfs->printbad, &e);
+		if (errmsg)
+			return errmsg;
+		switch (e) {
+		case LogfsLowLevelReadResultOk:
+			break;
+		case LogfsLowLevelReadResultSoftError:
+			if (*blocke == LogfsLowLevelReadResultOk)
+				*blocke = LogfsLowLevelReadResultSoftError;
+			break;
+		case LogfsLowLevelReadResultHardError:
+			if (*blocke == LogfsLowLevelReadResultOk || *blocke == LogfsLowLevelReadResultSoftError)
+				*blocke = LogfsLowLevelReadResultHardError;
+			break;
+		}
+	}
+
+	return nil;
+}