better error handling

2004-04-21 22:47:01 +00:00
parent 63b6732301
commit 2b4b2ae191
1 changed files with 2 additions and 1 deletions
--- 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){