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| author | Christian Neukirchen <chneukirchen@gmail.com> | 2015-08-27 14:18:20 +0200 |
|---|---|---|
| committer | Christian Neukirchen <chneukirchen@gmail.com> | 2015-08-27 14:18:20 +0200 |
| commit | f6db8d670e6055d1db83aed1dcda593beee37c67 (patch) | |
| tree | c25e83b128c8f529dc322f1aa591407e0c7171af | |
| parent | 0bbe2e436fc51df3091e28464dfac2f6d3bf5f38 (diff) | |
| download | nq-f6db8d670e6055d1db83aed1dcda593beee37c67.tar.gz nq-f6db8d670e6055d1db83aed1dcda593beee37c67.tar.xz nq-f6db8d670e6055d1db83aed1dcda593beee37c67.zip | |
nq: error handling for dup2
| -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) { |