Date: Sat, 16 Oct 2004 20:19:55 +0400 (MSD) From: Dmitry Morozovsky <marck@FreeBSD.org> To: hackers@FreeBSD.org Cc: oleg@rinet.ru Subject: thread-safe popen(3) at 4-STABLE Message-ID: <20041016201612.N53591@woozle.rinet.ru>
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This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --0-1254507317-1097943567=:53591 Content-Type: TEXT/PLAIN; CHARSET=US-ASCII; FORMAT=flowed Content-ID: <20041016201933.R53591@woozle.rinet.ru> Dear colleagues, checking for hanged and CPU-eating clamav, my colleague (oleg@rinet.ru) found that popen(3) is not thread safe. What about commiting tjr's fix (attached) to RELENG_4? Sincerely, D.Marck [DM5020, MCK-RIPE, DM3-RIPN] --------------------------------------------------------------------------- *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@FreeBSD.org *** --------------------------------------------------------------------------- --0-1254507317-1097943567=:53591 Content-Type: TEXT/PLAIN; CHARSET=US-ASCII; NAME="popen.patch" Content-Transfer-Encoding: BASE64 Content-ID: <20041016201927.L53591@woozle.rinet.ru> Content-Description: Content-Disposition: ATTACHMENT; FILENAME="popen.patch" SW5kZXg6IGxpYi9saWJjL2dlbi9wb3Blbi5jDQo9PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09DQpSQ1MgZmlsZTogL2hvbWUvbmN2cy9zcmMvbGliL2xpYmMvZ2Vu L3BvcGVuLmMsdg0KcmV0cmlldmluZyByZXZpc2lvbiAxLjE0DQpkaWZmIC11 IC1yMS4xNCBwb3Blbi5jDQotLS0gbGliL2xpYmMvZ2VuL3BvcGVuLmMJMjcg SmFuIDIwMDAgMjM6MDY6MTkgLTAwMDAJMS4xNA0KKysrIGxpYi9saWJjL2dl bi9wb3Blbi5jCTE2IE9jdCAyMDA0IDE2OjE0OjM4IC0wMDAwDQpAQCAtNTEs NiArNTEsMTcgQEANCiAjaW5jbHVkZSA8c3RyaW5nLmg+DQogI2luY2x1ZGUg PHBhdGhzLmg+DQogDQorI2lmbmRlZiBfVEhSRUFEX1NBRkUNCisjZGVmaW5l IFRIUkVBRF9MT0NLKCkNCisjZGVmaW5lIFRIUkVBRF9VTkxPQ0soKQ0KKyNl bHNlDQorI2luY2x1ZGUgPHB0aHJlYWQuaD4NCisjaW5jbHVkZSAibGliY19w cml2YXRlLmgiDQorc3RhdGljIHB0aHJlYWRfbXV0ZXhfdCBwaWRsaXN0X211 dGV4ID0gUFRIUkVBRF9NVVRFWF9JTklUSUFMSVpFUjsNCisjZGVmaW5lCVRI UkVBRF9MT0NLKCkJaWYgKF9faXN0aHJlYWRlZCkgX3B0aHJlYWRfbXV0ZXhf bG9jaygmcGlkbGlzdF9tdXRleCkNCisjZGVmaW5lCVRIUkVBRF9VTkxPQ0so KQlpZiAoX19pc3RocmVhZGVkKSBfcHRocmVhZF9tdXRleF91bmxvY2soJnBp ZGxpc3RfbXV0ZXgpDQorI2VuZGlmIC8qIF9USFJFQURfU0FGRSAqLw0KKw0K IGV4dGVybiBjaGFyICoqZW52aXJvbjsNCiANCiBzdGF0aWMgc3RydWN0IHBp ZCB7DQpAQCAtOTUsOCArMTA2LDEwIEBADQogCWFyZ3ZbMl0gPSAoY2hhciAq KWNvbW1hbmQ7DQogCWFyZ3ZbM10gPSBOVUxMOw0KIA0KKwlUSFJFQURfTE9D SygpOw0KIAlzd2l0Y2ggKHBpZCA9IHZmb3JrKCkpIHsNCiAJY2FzZSAtMToJ CQkvKiBFcnJvci4gKi8NCisJCVRIUkVBRF9VTkxPQ0soKTsNCiAJCSh2b2lk KV9jbG9zZShwZGVzWzBdKTsNCiAJCSh2b2lkKV9jbG9zZShwZGVzWzFdKTsN CiAJCWZyZWUoY3VyKTsNCkBAIC0xMzQsNiArMTQ3LDcgQEANCiAJCV9leGl0 KDEyNyk7DQogCQkvKiBOT1RSRUFDSEVEICovDQogCX0NCisJVEhSRUFEX1VO TE9DSygpOw0KIA0KIAkvKiBQYXJlbnQ7IGFzc3VtZSBmZG9wZW4gY2FuJ3Qg ZmFpbC4gKi8NCiAJaWYgKCp0eXBlID09ICdyJykgew0KQEAgLTE0Niw5ICsx NjAsMTEgQEANCiANCiAJLyogTGluayBpbnRvIGxpc3Qgb2YgZmlsZSBkZXNj cmlwdG9ycy4gKi8NCiAJY3VyLT5mcCA9IGlvcDsNCi0JY3VyLT5waWQgPSAg cGlkOw0KKwljdXItPnBpZCA9IHBpZDsNCisJVEhSRUFEX0xPQ0soKTsNCiAJ Y3VyLT5uZXh0ID0gcGlkbGlzdDsNCiAJcGlkbGlzdCA9IGN1cjsNCisJVEhS RUFEX1VOTE9DSygpOw0KIA0KIAlyZXR1cm4gKGlvcCk7DQogfQ0KQEAgLTE2 NywxMiArMTgzLDIzIEBADQogCWludCBwc3RhdDsNCiAJcGlkX3QgcGlkOw0K IA0KLQkvKiBGaW5kIHRoZSBhcHByb3ByaWF0ZSBmaWxlIHBvaW50ZXIuICov DQorCS8qDQorCSAqIEZpbmQgdGhlIGFwcHJvcHJpYXRlIGZpbGUgcG9pbnRl ciBhbmQgcmVtb3ZlIGl0IGZyb20gdGhlIGxpc3QuDQorCSAqLw0KKwlUSFJF QURfTE9DSygpOw0KIAlmb3IgKGxhc3QgPSBOVUxMLCBjdXIgPSBwaWRsaXN0 OyBjdXI7IGxhc3QgPSBjdXIsIGN1ciA9IGN1ci0+bmV4dCkNCiAJCWlmIChj dXItPmZwID09IGlvcCkNCiAJCQlicmVhazsNCi0JaWYgKGN1ciA9PSBOVUxM KQ0KKwlpZiAoY3VyID09IE5VTEwpIHsNCisJCVRIUkVBRF9VTkxPQ0soKTsN CiAJCXJldHVybiAoLTEpOw0KKwl9DQorCS8qIFJlbW92ZSB0aGUgZW50cnkg ZnJvbSB0aGUgbGlua2VkIGxpc3QuICovDQorCWlmIChsYXN0ID09IE5VTEwp DQorCQlwaWRsaXN0ID0gY3VyLT5uZXh0Ow0KKwllbHNlDQorCQlsYXN0LT5u ZXh0ID0gY3VyLT5uZXh0Ow0KKwlUSFJFQURfVU5MT0NLKCk7DQogDQogCSh2 b2lkKWZjbG9zZShpb3ApOw0KIA0KQEAgLTE4MCwxMSArMjA3LDYgQEANCiAJ CXBpZCA9IF93YWl0NChjdXItPnBpZCwgJnBzdGF0LCAwLCAoc3RydWN0IHJ1 c2FnZSAqKTApOw0KIAl9IHdoaWxlIChwaWQgPT0gLTEgJiYgZXJybm8gPT0g RUlOVFIpOw0KIA0KLQkvKiBSZW1vdmUgdGhlIGVudHJ5IGZyb20gdGhlIGxp bmtlZCBsaXN0LiAqLw0KLQlpZiAobGFzdCA9PSBOVUxMKQ0KLQkJcGlkbGlz dCA9IGN1ci0+bmV4dDsNCi0JZWxzZQ0KLQkJbGFzdC0+bmV4dCA9IGN1ci0+ bmV4dDsNCiAJZnJlZShjdXIpOw0KIA0KIAlyZXR1cm4gKHBpZCA9PSAtMSA/ IC0xIDogcHN0YXQpOw0K --0-1254507317-1097943567=:53591--
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