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Petersen" , Hannes Reinecke CC: Damien Le Moal , Niklas Cassel , "stable@vger.kernel.org" , Jens Axboe , "linux-block@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: RE: [PATCH v3 1/2] blk-zoned: allow zone management send operations without CAP_SYS_ADMIN Thread-Topic: [PATCH v3 1/2] blk-zoned: allow zone management send operations without CAP_SYS_ADMIN Thread-Index: AQHXYRgmF8KejSRZnk+qFcY64aClOqsWpS8g Date: Wed, 16 Jun 2021 13:42:47 +0000 Message-ID: References: <20210614122303.154378-1-Niklas.Cassel@wdc.com> <20210614122303.154378-2-Niklas.Cassel@wdc.com> In-Reply-To: <20210614122303.154378-2-Niklas.Cassel@wdc.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: wdc.com; dkim=none (message not signed) header.d=none;wdc.com; dmarc=none action=none header.from=wdc.com; x-originating-ip: [87.116.37.42] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 30d8c825-6cf9-435c-0ad4-08d930cca069 x-ms-traffictypediagnostic: BYAPR04MB6133: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: wdcipoutbound: EOP-TRUE x-ms-oob-tlc-oobclassifiers: OLM:8273; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: BYAPR04MB4056.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 30d8c825-6cf9-435c-0ad4-08d930cca069 X-MS-Exchange-CrossTenant-originalarrivaltime: 16 Jun 2021 13:42:47.1176 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: vA4ndkPUMciYh7WVlDnsiGHk2hwgS5ZcP2rBTRNbH2MrDpS11UOe0+hMb4fpEyQVx8LCf+HqMBZV79o9x6CdCw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR04MB6133 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > -----Original Message----- > From: Niklas Cassel > Sent: Monday, June 14, 2021 5:53 PM > To: Jens Axboe ; Damien Le Moal ; > Shaun Tancheff ; Martin K. Petersen > ; Hannes Reinecke > Cc: Damien Le Moal ; Niklas Cassel > ; stable@vger.kernel.org; Jens Axboe ; > linux-block@vger.kernel.org; linux-kernel@vger.kernel.org > Subject: [PATCH v3 1/2] blk-zoned: allow zone management send operations > without CAP_SYS_ADMIN >=20 > From: Niklas Cassel >=20 > Zone management send operations (BLKRESETZONE, BLKOPENZONE, > BLKCLOSEZONE and BLKFINISHZONE) should be allowed under the same permissi= ons > as write(). > (write() does not require CAP_SYS_ADMIN). >=20 > Additionally, other ioctls like BLKSECDISCARD and BLKZEROOUT only check i= f the fd > was successfully opened with FMODE_WRITE. > (They do not require CAP_SYS_ADMIN). >=20 > Currently, zone management send operations require both CAP_SYS_ADMIN and > that the fd was successfully opened with FMODE_WRITE. >=20 > Remove the CAP_SYS_ADMIN requirement, so that zone management send > operations match the access control requirement of write(), BLKSECDISCARD= and > BLKZEROOUT. >=20 > Fixes: 3ed05a987e0f ("blk-zoned: implement ioctls") > Signed-off-by: Niklas Cassel > Reviewed-by: Damien Le Moal > Cc: stable@vger.kernel.org # v4.10+ > --- > Changes since v2: > -None >=20 > Note to backporter: > Function was added as blkdev_reset_zones_ioctl() in v4.10. > Function was renamed to blkdev_zone_mgmt_ioctl() in v5.5. > The patch is valid both before and after the function rename. >=20 > block/blk-zoned.c | 3 --- > 1 file changed, 3 deletions(-) >=20 > diff --git a/block/blk-zoned.c b/block/blk-zoned.c index > 250cb76ee615..0789e6e9f7db 100644 > --- a/block/blk-zoned.c > +++ b/block/blk-zoned.c > @@ -349,9 +349,6 @@ int blkdev_zone_mgmt_ioctl(struct block_device *bdev, > fmode_t mode, > if (!blk_queue_is_zoned(q)) > return -ENOTTY; >=20 > - if (!capable(CAP_SYS_ADMIN)) > - return -EACCES; > - > if (!(mode & FMODE_WRITE)) > return -EBADF; >=20 > -- > 2.31.1 Looks good, Reviewed-by: Aravind Ramesh From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,PDS_BAD_THREAD_QP_64,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 779D2C48BE6 for ; Wed, 16 Jun 2021 13:42:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 56A7C611EE for ; Wed, 16 Jun 2021 13:42:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233468AbhFPNo4 (ORCPT ); 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Wed, 16 Jun 2021 13:42:47 +0000 Content-Type: multipart/mixed; boundary="_000_BYAPR04MB4056CD5501CAB658B2B274358C0F9BYAPR04MB4056namp_" From: Aravind Ramesh To: Niklas Cassel , Jens Axboe , Damien Le Moal , Shaun Tancheff , "Martin K. Petersen" , Hannes Reinecke CC: Damien Le Moal , Niklas Cassel , "stable@vger.kernel.org" , Jens Axboe , "linux-block@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: RE: [PATCH v3 1/2] blk-zoned: allow zone management send operations without CAP_SYS_ADMIN Thread-Topic: [PATCH v3 1/2] blk-zoned: allow zone management send operations without CAP_SYS_ADMIN Thread-Index: AQHXYRgmF8KejSRZnk+qFcY64aClOqsWpS8g Date: Wed, 16 Jun 2021 13:42:47 +0000 Message-ID: References: <20210614122303.154378-1-Niklas.Cassel@wdc.com> <20210614122303.154378-2-Niklas.Cassel@wdc.com> In-Reply-To: <20210614122303.154378-2-Niklas.Cassel@wdc.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: wdc.com; dkim=none (message not signed) header.d=none;wdc.com; dmarc=none action=none header.from=wdc.com; x-originating-ip: [87.116.37.42] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 30d8c825-6cf9-435c-0ad4-08d930cca069 x-ms-traffictypediagnostic: BYAPR04MB6133: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: wdcipoutbound: EOP-TRUE x-ms-oob-tlc-oobclassifiers: OLM:8273; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable > -----Original Message----- > From: Niklas Cassel > Sent: Monday, June 14, 2021 5:53 PM > To: Jens Axboe ; Damien Le Moal ; > Shaun Tancheff ; Martin K. Petersen > ; Hannes Reinecke > Cc: Damien Le Moal ; Niklas Cassel > ; stable@vger.kernel.org; Jens Axboe ; > linux-block@vger.kernel.org; linux-kernel@vger.kernel.org > Subject: [PATCH v3 1/2] blk-zoned: allow zone management send operations > without CAP_SYS_ADMIN >=20 > From: Niklas Cassel >=20 > Zone management send operations (BLKRESETZONE, BLKOPENZONE, > BLKCLOSEZONE and BLKFINISHZONE) should be allowed under the same permissi= ons > as write(). > (write() does not require CAP_SYS_ADMIN). >=20 > Additionally, other ioctls like BLKSECDISCARD and BLKZEROOUT only check i= f the fd > was successfully opened with FMODE_WRITE. > (They do not require CAP_SYS_ADMIN). >=20 > Currently, zone management send operations require both CAP_SYS_ADMIN and > that the fd was successfully opened with FMODE_WRITE. >=20 > Remove the CAP_SYS_ADMIN requirement, so that zone management send > operations match the access control requirement of write(), BLKSECDISCARD= and > BLKZEROOUT. >=20 > Fixes: 3ed05a987e0f ("blk-zoned: implement ioctls") > Signed-off-by: Niklas Cassel > Reviewed-by: Damien Le Moal > Cc: stable@vger.kernel.org # v4.10+ > --- > Changes since v2: > -None >=20 > Note to backporter: > Function was added as blkdev_reset_zones_ioctl() in v4.10. > Function was renamed to blkdev_zone_mgmt_ioctl() in v5.5. > The patch is valid both before and after the function rename. >=20 > block/blk-zoned.c | 3 --- > 1 file changed, 3 deletions(-) >=20 > diff --git a/block/blk-zoned.c b/block/blk-zoned.c index > 250cb76ee615..0789e6e9f7db 100644 > --- a/block/blk-zoned.c > +++ b/block/blk-zoned.c > @@ -349,9 +349,6 @@ int blkdev_zone_mgmt_ioctl(struct block_device *bdev, > fmode_t mode, > if (!blk_queue_is_zoned(q)) > return -ENOTTY; >=20 > - if (!capable(CAP_SYS_ADMIN)) > - return -EACCES; > - > if (!(mode & FMODE_WRITE)) > return -EBADF; >=20 > -- > 2.31.1 Looks good, Reviewed-by: Aravind Ramesh --_000_BYAPR04MB4056CD5501CAB658B2B274358C0F9BYAPR04MB4056namp_ Content-Disposition: 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