From 25537c3d3b9b68af91573dec39d1f46c3d97f735 Mon Sep 17 00:00:00 2001
From: Nicholas Noll <nbnoll@eml.cc>
Date: Fri, 10 Dec 2021 09:16:08 -0800
Subject: Checkin: small sprawling updates

Small touches to multiple locations in base.
Nothing major
---
 src/cmd/core/cat.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'src/cmd/core/cat.c')

diff --git a/src/cmd/core/cat.c b/src/cmd/core/cat.c
index aeed1be..92b082d 100644
--- a/src/cmd/core/cat.c
+++ b/src/cmd/core/cat.c
@@ -11,15 +11,16 @@ usage(void)
 static void
 cat(int fd, char *s)
 {
+    int err;
     intptr nr, nw;
     char buf[8192];
 
-    while(!(sys·read(fd, buf, sizeof(buf), &nr))){
+    while(!(err=sys·read(fd, buf, sizeof(buf), &nr)) && nr>0){
         if(sys·write(1, buf, nr, &nw) || nr != nw)
             fmt·panic("write error copying %s: %r", s);
     }
 
-    if(nr<0)
+    if(err)
         fmt·panic("error reading %s: %r", s);
 }
 
-- 
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