diff -r 70ea59334d41 libixp/client.c
--- a/libixp/client.c	Mon Nov  5 14:52:11 2007
+++ b/libixp/client.c	Thu Nov 22 03:50:21 2007
@@ -415,7 +415,7 @@
 }
 
 static long
-_pwrite(IxpCFid *f, void *buf, long count, vlong offset) {
+_pwrite(const IxpCFid *f, void *buf, long count, vlong offset) {
 	Fcall fcall;
 	int n, len;
 
@@ -424,13 +424,12 @@
 		n = min(count-len, f->iounit);
 		fcall.type = TWrite;
 		fcall.fid = f->fid;
-		fcall.offset = f->offset;
+		fcall.offset = f->offset + len;
 		fcall.data = buf + len;
 		fcall.count = n;
 		if(dofcall(f->client, &fcall) == 0)
 			return -1;
 
-		f->offset += fcall.count;
 		len += fcall.count;
 
 		ixp_freefcall(&fcall);