From 2b4b2ae19107f2c7e45ca6ab6f73c9c8a5fb84dd Mon Sep 17 00:00:00 2001
From: rsc <devnull@localhost>
Date: Wed, 21 Apr 2004 22:47:01 +0000
Subject: better error handling

---
 src/libthread/fdwait.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/libthread/fdwait.c b/src/libthread/fdwait.c
index 5dd7e868..927fc64f 100644
--- a/src/libthread/fdwait.c
+++ b/src/libthread/fdwait.c
@@ -233,8 +233,9 @@ threadread(int fd, void *a, long n)
 
 	threadfdnoblock(fd);
 again:
+	errno = 0;
 	nn = read(fd, a, n);
-	if(nn < 0){
+	if(nn <= 0){
 		if(errno == EINTR)
 			goto again;
 		if(errno == EAGAIN || errno == EWOULDBLOCK){
-- 
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