From f6db8d670e6055d1db83aed1dcda593beee37c67 Mon Sep 17 00:00:00 2001 From: Christian Neukirchen Date: Thu, 27 Aug 2015 14:18:20 +0200 Subject: nq: error handling for dup2 --- nq.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/nq.c b/nq.c index 6fe739c..c5c7223 100644 --- a/nq.c +++ b/nq.c @@ -214,8 +214,11 @@ usage: write_execline(lockfd, argc, argv); - dup2(lockfd, 2); - dup2(lockfd, 1); + if (dup2(lockfd, 2) < 0 || + dup2(lockfd, 1) < 0) { + perror("dup2"); + exit(222); + } wait: if ((tflag || wflag) && argc - optind > 0) { -- cgit 1.4.1