From 958926fd7382d2c44828cdc70ca6c27bb281ff0d Mon Sep 17 00:00:00 2001
From: Nick Bowler <nbowler@draconx.ca>
Date: Thu, 4 Feb 2010 11:47:18 -0500
Subject: [PATCH] liblbx: Don't ignore whence parameter in pipe_seek.

The code from which this derived only supported SEEK_SET-like
operations, so SEEK_CUR was forgotten when converting it.
SEEK_END obviously cannot be supported on pipes.
---
 src/fops.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/fops.c b/src/fops.c
index 2ae6c61..834c8b2 100644
--- a/src/fops.c
+++ b/src/fops.c
@@ -66,7 +66,18 @@ static int pipe_seek(void *handle, long offset, int whence)
 	struct lbx_pipe_state *state = handle;
 	long distance;
 
-	distance = offset - state->offset;
+	switch (whence) {
+	case SEEK_SET:
+		distance = offset - state->offset;
+		break;
+	case SEEK_CUR:
+		distance = offset;
+		break;
+	case SEEK_END:
+		distance = -1;
+		break;
+	}
+
 	if (distance < 0)
 		return -1;
 
-- 
2.43.2