Return-Path: linux-nfs-owner@vger.kernel.org Received: from dgate10.ts.fujitsu.com ([80.70.172.49]:5583 "EHLO dgate10.ts.fujitsu.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752144AbaKEUYa (ORCPT ); Wed, 5 Nov 2014 15:24:30 -0500 Message-Id: Date: 05 Nov 2014 21:24:29 +0100 From: bstroesser@ts.fujitsu.com To: neilb@suse.de, linux-nfs@vger.kernel.org Cc: bfields@fieldses.org, bstroesser@ts.fujitsu.com Subject: [nfs-utils] [PATCH 3/3] rpc.mountd: set libtirpc nonblocking mode to avoid DOS Content-Type: text/plain; charset=us-ascii Sender: linux-nfs-owner@vger.kernel.org List-ID: RnJvbTogQm9kbyBTdHJvZXNzZXIgPGJzdHJvZXNzZXJAdHMuZnVqaXRzdS5jb20+CkRhdGU6 IFRodSwgMDkgT2N0IDIwMTQgMTM6MDY6MTkgKzAyMDAKU3ViamVjdDogW25mcy11dGlsc10g W1BBVENIIDMvM10gcnBjLm1vdW50ZDogc2V0IGxpYnRpcnBjIG5vbmJsb2NraW5nIG1vZGUg dG8gYXZvaWQgRE9TCgpUaGlzIHBhdGNoIGlzIGV4cGVyaW1lbnRhbC4gSW4gd29ya3MgZmlu ZSBpbiB0aGF0IGl0IHJlbW92ZXMgdGhlIHZ1bG5lcmFiaWxpdHkKYWdhaW5zdCBhIERPUyBh dHRhY2suIHJwYy5tb3VudGQgY2FuIGJlIGJsb2NrZWQgYnkgYSBiYWQgY2xpZW50LCB0aGF0 IHNlbmRzCm1hbnkgUlBDIHJlcXVlc3RzIGJ1dCBuZXZlciByZWFkcyB0aGUgcmVzcG9uc2Vz LiBUaGlzIG1pZ2h0IGhhcHBlbiBpbnRlbnRpb25hbGx5Cm9yIGNhdXNlZCBieSBhIHdyb25n IG5ldHdvcmsgY29uZmlnIChNVFUpLgpUaGUgcGF0Y2ggc3dpdGNoZXMgb24gdGhlIG5vbmJs b2NraW5nIG1vZGUgb2YgbGlidGlycGMuIEluIHRoYXQgbW9kZSB3cml0ZXMgY2FuCmJsb2Nr IGZvciBhIG1heC4gb2YgMiBzZWNvbmRzLiBBdHRhY2tlcnMgYXJlIGZvcmNlZCB0byBzZW5k IHJlcXVlc3RzIHNsb3dlciwgYXMKbGlidGlycGMgd2lsbCBjbG9zZSBhIGNvbm5lY3Rpb24g aWYgaXQgZmluZHMgdHdvIHJlcXVlc3RzIHRvIHJlYWQgYXQgdGhlIHNhbWUKdGltZS4KSSBk byBub3Qga25vdywgd2hldGhlciBzZXR0aW5nIE1BWFJFQyBjb3VsZCBjYXVzZSB0cm91Ymxl IGUuZy4gd2l0aCBiaWcgcmVwbGllcy4KIAoKU2lnbmVkLW9mZi1ieTogQm9kbyBTdHJvZXNz ZXIgPGJzdHJvZXNzZXJAdHMuZnVqaXRzdS5jb20+Ci0tLQoKLS0tIG5mcy11dGlscy0xLjMu MS9zdXBwb3J0L25mcy9zdmNfY3JlYXRlLmMJMjAxNC0xMC0wOSAxMjowOToxNS4wMDAwMDAw MDAgKzAyMDAKKysrIG5mcy11dGlscy0xLjMuMS9zdXBwb3J0L25mcy9zdmNfY3JlYXRlLmMJ MjAxNC0xMC0wOSAxMjoxMzozMi4wMDAwMDAwMDAgKzAyMDAKQEAgLTQ5LDYgKzQ5LDggQEAK IAogI2lmZGVmIEhBVkVfTElCVElSUEMKIAorI2luY2x1ZGUgPHJwYy9ycGNfY29tLmg+CisK ICNkZWZpbmUgU1ZDX0NSRUFURV9YUFJUX0NBQ0hFX1NJWkUJKDgpCiBzdGF0aWMgU1ZDWFBS VCAqc3ZjX2NyZWF0ZV94cHJ0X2NhY2hlW1NWQ19DUkVBVEVfWFBSVF9DQUNIRV9TSVpFXSA9 IHsgTlVMTCwgfTsKIApAQCAtNDAxLDYgKzQwMyw3IEBACiAJY29uc3Qgc3RydWN0IHNpZ2Fj dGlvbiBjcmVhdGVfc2lnYWN0aW9uID0gewogCQkuc2FfaGFuZGxlcgk9IFNJR19JR04sCiAJ fTsKKwlpbnQgbWF4cmVjID0gUlBDX01BWERBVEFTSVpFOwogCXVuc2lnbmVkIGludCB2aXNp YmxlLCB1cCwgc2VydnBvcnQ7CiAJc3RydWN0IG5ldGNvbmZpZyAqbmNvbmY7CiAJdm9pZCAq aGFuZGxlcDsKQEAgLTQxMiw2ICs0MTUsMjAgQEAKIAkgKi8KIAkodm9pZClzaWdhY3Rpb24o U0lHUElQRSwgJmNyZWF0ZV9zaWdhY3Rpb24sIE5VTEwpOwogCisJLyoKKwkgKiBTZXR0aW5n IE1BWFJFQyBhbHNvIGVuYWJsZXMgbm9uLWJsb2NraW5nIG1vZGUgZm9yIHRjcCBjb25uZWN0 aW9ucy4KKwkgKiBUaGlzIGF2b2lkcyBET1MgYXR0YWNrcyBieSBhIGNsaWVudCBzZW5kaW5n IG1hbnkgcmVxdWVzdHMgYnV0IG5ldmVyCisJICogcmVhZGluZyB0aGUgcmVwbHk6CisJICog LSBpZiBhIHNlY29uZCByZXF1ZXN0IGFscmVhZHkgaXMgcHJlc2VudCBmb3IgcmVhZGluZyBp biB0aGUgc29ja2V0LAorCSAqICAgYWZ0ZXIgdGhlIGZpcnN0IHJlcXVlc3QganVzdCB3YXMg cmVhZCwgbGlidGlycGMgd2lsbCBicmVhayB0aGUKKwkgKiAgIGNvbm5lY3Rpb24uIFRodXMg YW4gYXR0YWNrZXIgY2FuJ3Qgc2ltcGx5IHNlbmQgcmVxdWVzdHMgYXMgZmFzdCBhcworCSAq ICAgaGUgY2FuIHdpdGhvdXQgd2FpdGluZyBmb3IgdGhlIHJlc3BvbnNlLgorCSAqIC0gaWYg dGhlIHdyaXRlIGJ1ZmZlciBvZiB0aGUgc29ja2V0IGlzIGZ1bGwsIHRoZSBuZXh0IHdyaXRl KCkgd2lsbAorCSAqICAgZmFpbCB3aXRoIEVBR0FJTi4gbGlidGlycGMgd2lsbCByZXRyeSB0 aGUgd3JpdGUgaW4gYSBsb29wIGZvciBtYXguCisJICogICAyIHNlY29uZHMuIElmIHdyaXRl IHN0aWxsIGZhaWxzLCB0aGUgY29ubmVjdGlvbiB3aWxsIGJlIGNsb3NlZC4KKwkgKi8gICAK KwlycGNfY29udHJvbChSUENfU1ZDX0NPTk5NQVhSRUNfU0VULCAmbWF4cmVjKTsKKwogCWhh bmRsZXAgPSBzZXRuZXRjb25maWcoKTsKIAlpZiAoaGFuZGxlcCA9PSBOVUxMKSB7CiAJCXhs b2coTF9FUlJPUiwgIkZhaWxlZCB0byBhY2Nlc3MgbG9jYWwgbmV0Y29uZmlnIGRhdGFiYXNl OiAlcyIsCg==