1 files changed, 15 insertions, 0 deletions
diff --git a/hw2/xwrap.h b/hw2/xwrap.h
index 7759ae9..05504c3 100644
--- a/hw2/xwrap.h
+++ b/hw2/xwrap.h
@@ -31,4 +31,19 @@ static inline int xmin (int a, int b) {
 	return a < b ? a : b;
 }
 
+#define XBUFSIZ 512
+
+typedef struct {
+	char    buf[XBUFSIZ];
+	off_t   buf_start;
+	off_t   buf_len;
+	char*   buf_line;
+	ssize_t buf_line_len;
+	int     buf_error : 1;
+	int     buf_eof   : 1;
+} XBuf;
+
+void    xbufinit (XBuf* buf);
+char*   xgetline (int fd, XBuf* buf, int delim);
+
 #endif /* X_GENERAL_WRAPPER */