commit e066b12927b496c9f3b442a5928bacfb48e6334e
from: Michael Teichgräber <mt4swm@googlemail.com>
date: Sun Aug 23 17:25:44 2009 UTC

rc: make read not ignore interrupts/errors (again)

http://codereview.appspot.com/110042

commit - 375b78fb110b7e1dd3686bc43aba38cf45c606e9
commit + e066b12927b496c9f3b442a5928bacfb48e6334e
blob - d71cbc38d1b47e2b5e23c29186657cc99560fe2f
blob + 9393fb23e98d14bf87c0265199d069085474740f
--- src/cmd/rc/unixcrap.c
+++ src/cmd/rc/unixcrap.c
@@ -222,8 +222,11 @@ readnb(int fd, char *buf, long cnt)
 	int flgs;
 
 	didreset = 0;
-	while((n = read(fd, buf, cnt)) == -1)
-		if(!didreset && errno == EAGAIN){
+again:
+	n = read(fd, buf, cnt);
+	if(n == -1)
+	if(errno == EAGAIN){
+		if(!didreset){
 			if((flgs = fcntl(fd, F_GETFL, 0)) == -1)
 				return -1;
 			flgs &= ~O_NONBLOCK;
@@ -231,6 +234,8 @@ readnb(int fd, char *buf, long cnt)
 				return -1;
 			didreset = 1;
 		}
+		goto again;
+	}
 
 	return n;
 }