plan9port

commit 39e5957ace14f1dcff62014fd26f368e87c79c29
parent eb9be70308f0397b13312e2472d7764d481e5a73
Author: rsc <devnull@localhost>
Date:   Sun,  5 Feb 2006 15:34:18 +0000

Experiment: ignore double-responds.
Also allow nil string as empty string in readstr.

Diffstat:
M
src/lib9p/srv.c
 | 
12
++++++++++--
M
src/lib9p/util.c
 | 
5
++++-

2 files changed, 14 insertions(+), 3 deletions(-)
diff --git a/src/lib9p/srv.c b/src/lib9p/srv.c
@@ -755,6 +755,11 @@ respond(Req *r, char *error)
 	srv = r->srv;
 	assert(srv != nil);
 
+	if(r->responded){
+		assert(r->pool);
+		goto free;
+	}
+		
 	assert(r->responded == 0);
 	r->error = error;
 
@@ -806,13 +811,16 @@ if(chatty9p)
 		sysfatal("lib9p srv: write %d returned %d on fd %d: %r", n, m, srv->outfd);
 	qunlock(&srv->wlock);
 
+free:
 	qlock(&r->lk);	/* no one will add flushes now */
 	r->responded = 1;
-	qunlock(&r->lk);
-
+	
 	for(i=0; i<r->nflush; i++)
 		respond(r->flush[i], nil);
 	free(r->flush);
+	r->nflush = 0;
+	r->flush = nil;
+	qunlock(&r->lk);
 
 	if(r->pool)
 		closereq(r);
diff --git a/src/lib9p/util.c b/src/lib9p/util.c
@@ -21,5 +21,8 @@ readbuf(Req *r, void *s, long n)
 void
 readstr(Req *r, char *s)
 {
-	readbuf(r, s, strlen(s));
+	if(s == nil)
+		r->ofcall.count = 0;
+	else
+		readbuf(r, s, strlen(s));
 }