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-rw-r--r--buf.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/buf.h b/buf.h
index e3f6b14..7ab352a 100644
--- a/buf.h
+++ b/buf.h
@@ -5,3 +5,4 @@ struct buf {
uchar data[512];
};
#define B_BUSY 0x1
+#define B_VALID 0x2