From 1fd0c9b0e1f27098f9bf86e86285335e640317a5 Mon Sep 17 00:00:00 2001
From: Stefano Brivio <sbrivio@redhat.com>
Date: Fri, 15 Oct 2021 22:39:17 +0200
Subject: util, pasta: Don't read() and lseek() every single line in
 read_line()

...periodically checking bound ports becomes quite expensive
otherwise.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
---
 conf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'conf.c')

diff --git a/conf.c b/conf.c
index b92a7d9..b91d09b 100644
--- a/conf.c
+++ b/conf.c
@@ -293,7 +293,7 @@ static void get_dns(struct ctx *c)
 	if ((fd = open("/etc/resolv.conf", O_RDONLY)) < 0)
 		goto out;
 
-	while (line_read(buf, BUFSIZ, fd)) {
+	while (!(*buf = 0) && line_read(buf, BUFSIZ, fd)) {
 		if (!dns_set && strstr(buf, "nameserver ") == buf) {
 			p = strrchr(buf, ' ');
 			if (!p)
-- 
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