diff options
| -rw-r--r-- | nq.c | 7 |
1 files 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) { |