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boundary="_000_VE1PR03MB5248247EB66D8CF590CE204988CE0VE1PR03MB5248eurp_" MIME-Version: 1.0 X-OriginatorOrg: enea.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: VE1PR03MB5248.eurprd03.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: dea2dc18-af98-4a37-3f76-08d89a983e6f X-MS-Exchange-CrossTenant-originalarrivaltime: 07 Dec 2020 10:09:54.2112 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 8cdaed89-c47e-40b8-90b5-f28ad2c3fdca X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: 6KYNKwgB2p0mv4ACTAZXJANAcK8bjZbYZInrMYpQdTO8PY08O93VVOrELkL5lTFv X-MS-Exchange-Transport-CrossTenantHeadersStamped: VE1PR03MB5245 Subject: [musl] pthread_mutexattr_getprotocol() issue --_000_VE1PR03MB5248247EB66D8CF590CE204988CE0VE1PR03MB5248eurp_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi, While using MUSL C-library 1.1.22. we observed an issue with the pthread_mu= texattr_getprotocol() implementation. The same implementation is in the lat= est version also. When the priority inheritance mutexes were implemented, it seems that pthre= ad_mutexattr_getprotocol() wasn't updated to return the proper mutex protoc= ol type. The PI mutexes update was done in this commit: http://git.musl-libc.org/cgi= t/musl/commit/?id=3D54ca677983d47529bab8752315ac1a2b49888870 If possible, maybe the get protocol function can be updated in a future mer= ge. In order to fix the get protocol function, we changed it to: int pthread_mutexattr_getprotocol(const pthread_mutexattr_t *restrict a, in= t *restrict protocol) { if (a->__attr & 8) *protocol =3D PTHREAD_PRIO_INHERIT; else *protocol =3D PTHREAD_PRIO_NONE; return 0; } Best Regards, Bogdan Nistor Software Engineer Enterprise Business Unit Email Bogdan.Nistor@enea.com Phone +40 74 517 5795 Enea 319 Splaiul Independentei OB403A District 6 Bucharest 060044, ROMANIA [https://www.enea.com/globalassets/images/enea-email-signature.png] This message, including attachments, is CONFIDENTIAL. It may also be privil= eged or otherwise protected by law. If you received this email by mistake p= lease let us know by reply and then delete it from your system; you should = not copy it or disclose its contents to anyone. All messages sent to and fr= om Enea may be monitored to ensure compliance with internal policies and to= protect our business. Emails are not secure and cannot be guaranteed to be= error free as they can be intercepted, a mended, lost or destroyed, or con= tain viruses. The sender therefore does not accept liability for any errors= or omissions in the contents of this message, which arise as a result of e= mail transmission. Anyone who communicates with us by email accepts these r= isks. --_000_VE1PR03MB5248247EB66D8CF590CE204988CE0VE1PR03MB5248eurp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi,

 

While using MUSL C-library 1.1.= 22. we observed an issue with the pthread_mutexattr_getprotocol() implement= ation. The same implementation is in the latest version also.

When the priority inheritance m= utexes were implemented, it seems that pthread_mutexattr_getprotocol() wasn= ’t updated to return the proper mutex protocol type.

 

The PI mutexes update was done = in this commit: http://git.musl-libc.org/cgit/musl/commit/?id=3D54ca677983d47529bab8752315a= c1a2b49888870

 

If possible, maybe the get prot= ocol function can be updated in a future merge.

 

In order to fix the get protoco= l function, we changed it to:

int pthread_mutexattr_getprotoc= ol(const pthread_mutexattr_t *restrict a, int *restrict protocol)

{

   if (a->__attr &= amp; 8)

      =          *protocol =3D PTHREAD_PRIO= _INHERIT;

   else

      =          *protocol =3D PTHREAD_PRIO= _NONE;

     &= nbsp;         return 0;<= /span>

}

 

Best Regards,

Bogdan Nis= tor

Software Engi= neer
Enterprise Business Unit

Email

Bogdan.Nistor= @enea.com<= /p>

Phone

+40 74 517 57= 95


Enea
319 Splaiul Independentei
OB403A District 6
Bucharest 060044, ROMANIA

 <= /o:p>

 

 


This message, including attachments, is CONFIDENTIAL. It may also be privil= eged or otherwise protected by law. If you received this email by mist= ake please let us know by reply and then delete it from your system; you sh= ould not copy it or disclose its contents to anyone. All messages sent to and from Enea may be monitored to ensure c= ompliance with internal policies and to protect our business. Emails are no= t secure and cannot be guaranteed to be error free as they can be intercept= ed, a mended, lost or destroyed, or contain viruses. The sender therefore does not accept liability for any= errors or omissions in the contents of this message, which arise as a resu= lt of email transmission. Anyone who communicates with us by email accepts = these risks. --_000_VE1PR03MB5248247EB66D8CF590CE204988CE0VE1PR03MB5248eurp_--