From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Trond Myklebust Subject: Re: readdir returns d_type=DT_UNKNOWN to overlay exported dir (NFSv3) Date: Wed, 14 Mar 2018 14:16:55 +0000 Message-ID: <1521037013.40526.8.camel@primarydata.com> References: <1521025377.4552.6.camel@kernel.org> In-Reply-To: <1521025377.4552.6.camel@kernel.org> Content-Language: en-US Content-ID: <599B08CC21D65E48AB9DC82EF7CD23CE@namprd11.prod.outlook.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 To: "eddiehorng.tw@gmail.com" , "jlayton@kernel.org" Cc: "bfields@fieldses.org" , "miklos@szeredi.hu" , "amir73il@gmail.com" , "linux-unionfs@vger.kernel.org" List-ID: T24gV2VkLCAyMDE4LTAzLTE0IGF0IDA3OjAyIC0wNDAwLCBKZWZmIExheXRvbiB3cm90ZToNCj4g T24gV2VkLCAyMDE4LTAzLTE0IGF0IDE2OjQyICswODAwLCBFZGRpZSBIb3JuZyB3cm90ZToNCj4g PiBIaSBBbWlyLA0KPiA+IFNpbmNlIHRoZSBmbG9jayBpc3N1ZSBpcyBjbGFyaWZpZWQsIEkgd291 bGQgbGlrZSB0byBzdGFydCB0aGlzIG5ldw0KPiA+IHRocmVhZCB0byBkaXNjdXNzIGlmIHdlIGNh biBmaW5kIHRoZSBjYXVzZSBvZiBkX3R5cGU9RFRfVU5LTk9XTi4NCj4gPiBGaXJzdA0KPiANCj4g VGhpcyBzb3VuZHMgbGlrZSBOT1RBQlVHIHRvIG1lLiBBcyByZWFkZGlyKDMpIHN0YXRlczoNCj4g DQo+IEN1cnJlbnRseSwgb25seSBzb21lIGZpbGVzeXN0ZW1zIChhbW9uZyB0aGVtOiBCdHJmcywg ZXh0MiwgZXh0MywNCj4gYW5kIGV4dDQpIGhhdmUgZnVsbCBzdXBwb3J0ICBmb3IgIHJldHVybmlu ZyAgdGhlICBmaWxlICB0eXBlICBpbg0KPiBkX3R5cGUuICAgQWxsICBhcHBsaWNhdGlvbnMgIG11 c3QgIHByb3Blcmx5ICBoYW5kbGUgIGEgcmV0dXJuIG9mDQo+IERUX1VOS05PV04uDQo+IA0KPiBB cHBsaWNhdGlvbnMgdGhhdCByZWx5IHNvbGVseSBvbiBkX3R5cGUgYXJlIGVmZmVjdGl2ZWx5IGJy b2tlbi4gWW91DQo+IGFsd2F5cyBuZWVkIHRvIGJlIGFibGUgdG8gZm9sbG93IHVwIHdpdGggYSBz dGF0IG9yIGVxdWl2YWxlbnQuDQo+IA0KDQpZZXMsIGJ1dCBvbmUgb2YgdGhlIG1haW4gc3VjaCBh cHBsaWNhdGlvbnMgaXMgdGhlICJmaW5kIiB1dGlsaXR5LCB3aGljaA0KdXNlcyBpdCB0byBhdm9p ZCBjYWxsaW5nIHN0YXQoKSBpbiBvcmRlciB0byBkaXNjb3ZlciB0aGUgZGlyZWN0b3JpZXMuDQpG b3IgdGhhdCByZWFzb24sIE5GUyBkb2VzIHRyeSB0byBzZXQgdGhlIGRfdHlwZSBmbGFnIHdoZW4g aXQgaXMgdXNpbmcNCnJlYWRkaXJwbHVzLCBhbmQgdGhlIHNlcnZlciByZXR1cm5zIGF0dHJpYnV0 ZXMgZm9yIHRoZSBlbnRyeSBpbg0KcXVlc3Rpb24uIE90aGVyd2lzZSwgaXQgaXMgZm9yY2VkIHRv IGRlZmF1bHQgdG8gRFRfVU5LTk9XTi4NCg0KTm90ZSB0aGF0IGluIHRoZSBjYXNlcyB3aGVyZSB0 aGUgcmVhZGRpciBlbnRyeSBoYXMgYSBtYXRjaGluZyBkZW50cnksDQp3ZSBwcm9iYWJseSBjb3Vs ZCB0cnkgdG8gZG8gYmV0dGVyIGJ5IGRvaW5nIGEgZF9sb29rdXAoKSBhbmQgdGhlbg0KZmlsbGlu ZyB0aGUgZF90eXBlLiBJcyB0aGF0IHdvcnRoIGRvaW5nPw0KDQo+ID4gb2YgYWxsIEkgdHJpZWQg cmRpcnBsdXMgYW5kIG5vcmRpcnBsdXMgbW91bnQgb3B0aW9uIGJ1dCBnb3Qgbm8NCj4gPiBkaWZm ZXJlbmNlLiBUaGVuIEkgcm91Z2hseSB0cmFjZSBjYWxsIGZsb3cgb2YgbmZzM19kZWNvZGVfZGly ZW50KCApDQo+ID4gYXMNCj4gPiBiZWxvdzoNCj4gPiANCj4gPiBkZWNvZGVfZmF0dHIzKCkNCj4g PiAgICAgZmF0dHItPm1vZGUgPSAoYmUzMl90b19jcHVwKHArKykgJiB+U19JRk1UKSB8IGZtb2Rl Ow0KPiA+ICAgICBmYXR0ci0+dmFsaWQgfD0gTkZTX0FUVFJfRkFUVFJfVjM7DQo+ID4gDQo+ID4g ZGVjb2RlX3Bvc3Rfb3BfYXR0cigpDQo+ID4gICAgIHAgPSB4ZHJfaW5saW5lX2RlY29kZSh4ZHIs IDQpOw0KPiA+ICAgICBpZiAoKnAgIT0geGRyX3plcm8pDQo+ID4gICAgICAgIHJldHVybiBkZWNv ZGVfZmF0dHIzKHhkciwgZmF0dHIpOw0KPiA+IA0KPiA+IG5mczNfZGVjb2RlX2RpcmVudCgpDQo+ ID4gICAgIGVudHJ5LT5kX3R5cGUgPSBEVF9VTktOT1dOOw0KPiA+ICAgICBpZiAoZW50cnktPmZh dHRyLT52YWxpZCAmIE5GU19BVFRSX0ZBVFRSX1YzKQ0KPiA+ICAgICAgICAgZW50cnktPmRfdHlw ZSA9IG5mc191bW9kZV90b19kdHlwZShlbnRyeS0+ZmF0dHItPm1vZGUpOw0KPiA+IA0KPiA+IElu IG92ZXJsYXkgZXhwb3J0ZWQgY2FzZSwgZGVjb2RlX3Bvc3Rfb3BfYXR0ciBoaXRzICpwPT14ZHJf emVybywgc28NCj4gPiBkZWNvZGVfZmF0dHIzIGlzIG5vdCBjYWxsZWQsIHRoZW4gZF90eXBlIHJl YW1pbnMgRFRfVU5LTk9XTiBpbg0KPiA+IG5mczNfZGVjb2RlX2RpcmVudC4gSXQgc2VlbXMgbmZz NF9kZWNvZGVfZGlyZW50IGhhcyB2ZXJ5IGRpZmZlcmVudA0KPiA+IHdheQ0KPiA+IHRvIGRlY29k ZSBmaWxlIGF0dHIgYW5kIG1heWJlIHRoZSB4ZHIgbGF5b3V0IGlzIHF1aXRlIGRpZmZlcmVudCBh cw0KPiA+IHdlbGwuSSBoYXZlIG5vdCBpZGVhIGFib3V0IGhvdyB0aGUgeGRyIHRvIGJlIGZpbGxl ZCBmcm9tIG92ZXJsYXkNCj4gPiBhbmQNCj4gPiBuZnNkJ3Mgb3V0cHV0LiBDb3VsZCBzb21lIG9m IHlvdSBtYXN0ZXIgZ2l2ZSBhIGhpbnQ/DQo+IA0KPiBWZXJ5IGRpZmZlcmVudC4NCj4gDQo+IFRo ZSB2MyBjbGllbnQgd2lsbCBzb21ldGltZXMgaXNzdWUgYSBSRUFERElSIChqdXN0IG5hbWVzIGFu ZCBmaWxlaWRzDQo+IG9mDQo+IGRpcmVudHMpIGFuZCBzb21ldGltZXMgYSBSRUFERElSUExVUyAo c2FtZSBhcyBSRUFERElSICsgYXR0cmlidXRlcykNCj4gZGVwZW5kaW5nIG9uIHRoZSBleHBlY3Rl ZCBzaXplIG9mIHRoZSByZXN1bHQgYW5kIHdoYXQgc29ydCBvZiBhY2Nlc3MNCj4gcGF0dGVybiB0 aGUgYXBwbGljYXRpb24gaGFzLiBJZiB5b3UgZ2V0IGJhY2sgRFRfVU5LTk9XTiwgaXQncyBxdWl0 ZQ0KPiBwb3NzaWJsZSB0aGF0IGl0IGNob3NlIHRvIHVzZSBhIFJFQURESVIgYW5kIHRoZXJlZm9y ZSBkb2Vzbid0IGhhdmUNCj4gZW5vdWdoIGluZm8gdG8gZmlsbCBvdXQgdGhlIGRfdHlwZS4NCj4g DQo+IENoZWVycywNCi0tIA0KVHJvbmQgTXlrbGVidXN0DQpMaW51eCBORlMgY2xpZW50IG1haW50 YWluZXIsIFByaW1hcnlEYXRhDQp0cm9uZC5teWtsZWJ1c3RAcHJpbWFyeWRhdGEuY29tDQo=