Date: Mon, 21 Jul 2008 10:33:39 +0200 From: "Antoine Brodin" <antoine@FreeBSD.org> To: "Garrett Cooper" <yanefbsd@gmail.com> Cc: freebsd-bugs@freebsd.org Subject: Re: bin/125680: atacontrol(8): atacontrol depends on executable in /usr Message-ID: <f19c444a0807210133m3f057089id8dcc5017488df43@mail.gmail.com> In-Reply-To: <7d6fde3d0807210104t188b6ab5hc61dc67c49d27188@mail.gmail.com> References: <200807202210.m6KMA4cm032331@freefall.freebsd.org> <7d6fde3d0807201714g49eb4a80ncfcc1cc800ad595e@mail.gmail.com> <f19c444a0807210039v99e8701g6c9c1fcb4f3e7b5@mail.gmail.com> <7d6fde3d0807210104t188b6ab5hc61dc67c49d27188@mail.gmail.com>
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------=_Part_91012_9625174.1216629219724 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline On Mon, Jul 21, 2008 at 10:04 AM, Garrett Cooper <yanefbsd@gmail.com> wrote: > Antoine, > You're right. I flip-flopped parent and child there in my > original statement. > I also saw the async ('&') terminal command. > But what is ultimately gained by forking another process to read > a device other than just resuming control for the terminal to the > user? It seems like all this does is create potential for additional > zombie processes on the system... > Just as an experiment, could you insert another printf or some > statement to ensure that the read is deterministically completed every > time? I have attached a patch with an extra printf. I guess that the dd/read is done in the background because it can take hours, so the user doesn't have to wait hours to have his terminal back. Cheers, Antoine ------=_Part_91012_9625174.1216629219724 Content-Type: text/plain; name=atacontrol2-diff.txt Content-Transfer-Encoding: base64 X-Attachment-Id: f_fiwtfvsn0 Content-Disposition: attachment; filename=atacontrol2-diff.txt SW5kZXg6IHNiaW4vYXRhY29udHJvbC9hdGFjb250cm9sLmMKPT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PQpSQ1MgZmlsZTog L2hvbWUvbmN2cy9zcmMvc2Jpbi9hdGFjb250cm9sL2F0YWNvbnRyb2wuYyx2CnJldHJpZXZpbmcg cmV2aXNpb24gMS40OApkaWZmIC11IC1wIC1yMS40OCBhdGFjb250cm9sLmMKLS0tIHNiaW4vYXRh Y29udHJvbC9hdGFjb250cm9sLmMJMTUgTWF5IDIwMDggMDE6MjU6MjkgLTAwMDAJMS40OAorKysg c2Jpbi9hdGFjb250cm9sL2F0YWNvbnRyb2wuYwkyMSBKdWwgMjAwOCAwODoxOTo0NiAtMDAwMApA QCAtMzcsNiArMzcsNyBAQAogI2luY2x1ZGUgPHN0ZGxpYi5oPgogI2luY2x1ZGUgPHN0cmluZy5o PgogI2luY2x1ZGUgPHN5c2V4aXRzLmg+CisjaW5jbHVkZSA8dW5pc3RkLmg+CiAKIHN0YXRpYyBj b25zdCBjaGFyICoKIG1vZGUyc3RyKGludCBtb2RlKQpAQCAtNTE3LDEyICs1MTgsMzEgQEAgbWFp bihpbnQgYXJnYywgY2hhciAqKmFyZ3YpCiAJCWlmIChpb2N0bChmZCwgSU9DQVRBUkFJRFJFQlVJ TEQsICZhcnJheSkgPCAwKQogCQkJd2FybigiaW9jdGwoSU9DQVRBUkFJRFJFQlVJTEQpIik7CiAJ CWVsc2UgewotCQkJY2hhciBidWZmZXJbMTI4XTsKLQkJCXNwcmludGYoYnVmZmVyLCAiL3Vzci9i aW4vbmljZSAtbiAyMCAvYmluL2RkICIKLQkJCQkiaWY9L2Rldi9hciVkIG9mPS9kZXYvbnVsbCBi cz0xbSAmIiwKLQkJCQlhcnJheSk7Ci0JCQlpZiAoc3lzdGVtKGJ1ZmZlcikpCi0JCQkJd2Fybigi YmFja2dyb3VuZCBkZCIpOworCQkJY2hhciBkZXZpY2VbNjRdOworCQkJY2hhciAqYnVmZmVyOwor CQkJaW50IGFyZmQ7CisKKwkJCXN3aXRjaCAoZm9yaygpKSB7CisJCQljYXNlIC0xOgorCQkJCWVy cigxLCAiZm9yayIpOworCQkJY2FzZSAwOgorCQkJCW5pY2UoMjApOworCQkJCXNucHJpbnRmKGRl dmljZSwgc2l6ZW9mKGRldmljZSksICIvZGV2L2FyJWQiLAorCQkJCQlhcnJheSk7CisJCQkJaWYg KChhcmZkID0gb3BlbihkZXZpY2UsIE9fUkRPTkxZKSkgPT0gLTEpCisJCQkJCWVycigxLCAib3Bl biAlcyIsIGRldmljZSk7CisJCQkJaWYgKChidWZmZXIgPSBtYWxsb2MoMTAyNCAqIDEwMjQpKSA9 PSBOVUxMKQorCQkJCQllcnIoMSwgIm1hbGxvYyIpOworCQkJCXdoaWxlIChyZWFkKGFyZmQsIGJ1 ZmZlciwgMTAyNCAqIDEwMjQpID4gMCkKKwkJCQkJOworCQkJCXByaW50ZigiYXRhY29udHJvbDog YXIlZCByZWJ1aWxkIGNvbXBsZXRlZFxuIiwKKwkJCQkJYXJyYXkpOworCQkJCWZyZWUoYnVmZmVy KTsKKwkJCQljbG9zZShhcmZkKTsKKwkJCQlicmVhazsKKwkJCWRlZmF1bHQ6CisJCQkJYnJlYWs7 CisJCQl9CiAJCX0KIAkJZXhpdChFWF9PSyk7CiAJfQo= ------=_Part_91012_9625174.1216629219724--
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