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-rw-r--r--include/libbb.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/libbb.h b/include/libbb.h
index 128aa92..bae7efb 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -965,6 +965,12 @@ enum {
/* How long the longest ESC sequence we know? */
KEYCODE_BUFFER_SIZE = 4
};
+/* Note: fd may be in blocking or non-blocking mode, both make sense.
+ * For one, less uses non-blocking mode.
+ * Only the first read syscall inside read_key may block indefinitely
+ * (unless fd is in non-blocking mode),
+ * subsequent reads will time out after a few milliseconds.
+ */
int read_key(int fd, smalluint *nbuffered, char *buffer) FAST_FUNC;