hostname: check return value of getdomainname

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

hostname: check return value of getdomainname
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
153ab835 · Mike Frysinger · 9cd07a6f · 153ab835
Commit 153ab835 authored Dec 10, 2011 by Mike Frysinger
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hostname.c hostname.c +4 -1

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--- a/hostname.c
+++ b/hostname.c
@@ -422,7 +422,10 @@ int main(int argc, char **argv)
 	    setdname(argv[optind]);
 	    break;
 	}
-	getdomainname(myname, sizeof(myname));
+	if (getdomainname(myname, sizeof(myname)) < 0) {
+	    perror("getdomainname()");
+	    exit(1);
+	}
 	if (opt_v)
 	    fprintf(stderr, _("getdomainname()=`%s'\n"), myname);
 	printf("%s\n", myname);