From: Karel Zak <kzak@redhat.com>
Date: Wed, 20 Jul 2016 11:20:14 +0000 (+0200)
Subject: agetty: call uname() only when necessary
X-Git-Tag: v2.28.1~17
X-Git-Url: http://git.ipfire.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=ae1fc92c07b6b04fa1233001e008e525f6110f33;p=thirdparty%2Futil-linux.git

agetty: call uname() only when necessary

Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/term-utils/agetty.c b/term-utils/agetty.c
index 0914ad1dce..4c1ed04e40 100644
--- a/term-utils/agetty.c
+++ b/term-utils/agetty.c
@@ -2341,8 +2341,6 @@ static void output_special_char(unsigned char c, struct options *op,
 {
 	struct utsname uts;
 
-	uname(&uts);
-
 	switch (c) {
 	case 'e':
 	{
@@ -2357,18 +2355,23 @@ static void output_special_char(unsigned char c, struct options *op,
 		break;
 	}
 	case 's':
+		uname(&uts);
 		printf("%s", uts.sysname);
 		break;
 	case 'n':
+		uname(&uts);
 		printf("%s", uts.nodename);
 		break;
 	case 'r':
+		uname(&uts);
 		printf("%s", uts.release);
 		break;
 	case 'v':
+		uname(&uts);
 		printf("%s", uts.version);
 		break;
 	case 'm':
+		uname(&uts);
 		printf("%s", uts.machine);
 		break;
 	case 'o':
@@ -2460,6 +2463,7 @@ static void output_special_char(unsigned char c, struct options *op,
 
 		/* \S and PRETTY_NAME not found */
 		} else {
+			uname(&uts);
 			fputs(uts.sysname, stdout);
 		}
 		break;