From patchwork Wed May 29 22:28:03 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Darrick J. Wong" X-Patchwork-Id: 10967875 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5EAC31398 for ; Wed, 29 May 2019 22:28:09 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4C6CD28A35 for ; Wed, 29 May 2019 22:28:09 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4120528A38; Wed, 29 May 2019 22:28:09 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AA48328A35 for ; Wed, 29 May 2019 22:28:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726311AbfE2W2I (ORCPT ); Wed, 29 May 2019 18:28:08 -0400 Received: from aserp2130.oracle.com ([141.146.126.79]:37388 "EHLO aserp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726408AbfE2W2I (ORCPT ); Wed, 29 May 2019 18:28:08 -0400 Received: from pps.filterd (aserp2130.oracle.com [127.0.0.1]) by aserp2130.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x4TM44Vx041579 for ; Wed, 29 May 2019 22:28:06 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=subject : from : to : cc : date : message-id : in-reply-to : references : mime-version : content-type : content-transfer-encoding; s=corp-2018-07-02; bh=QPVhv39vij19qyJc5TsPDZzaXpq7MozAm5zGUg3ZQ6g=; b=Cvd2wnQPtZLpzPdjuv36AuDqj5l6B/33pi4Z3S9TbDvXaCgycGoynZ7RkeRC6geUz2EH hv9jjkvqT0vUmBLRxXir+P5Er8xXaIjqeuqCgysNv4bAtVI5r9H8g0IerPNpemzmJElI yXwAFZzvHe13w/rI3EUbk8R0w9KQ18h+MBslE+NFNu8K/2UIT+1ioHWokP/UTjcoq64S Tr5xGXGa3IrSvi3rN9/tfsBSC4O5vOGs4r9w5GRyYofWGEJ4pyZOTqQy2l29CRhTH6gm qvMiWCyLXyxBhpf0i01sNl7tiX21603U5YGd9qbdcGrSwo4OXk0zHT8Y8/sygKTd4JcM rw== Received: from aserp3020.oracle.com (aserp3020.oracle.com [141.146.126.70]) by aserp2130.oracle.com with ESMTP id 2spu7dn1aj-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Wed, 29 May 2019 22:28:06 +0000 Received: from pps.filterd (aserp3020.oracle.com [127.0.0.1]) by aserp3020.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x4TMQZea172966 for ; Wed, 29 May 2019 22:28:06 GMT Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by aserp3020.oracle.com with ESMTP id 2sqh73ym6g-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Wed, 29 May 2019 22:28:05 +0000 Received: from abhmp0020.oracle.com (abhmp0020.oracle.com [141.146.116.26]) by userv0121.oracle.com (8.14.4/8.13.8) with ESMTP id x4TMS44h004175 for ; Wed, 29 May 2019 22:28:04 GMT Received: from localhost (/67.169.218.210) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 29 May 2019 15:28:04 -0700 Subject: [PATCH 5/9] xfs: wire up new v5 bulkstat ioctls From: "Darrick J. Wong" To: darrick.wong@oracle.com Cc: linux-xfs@vger.kernel.org Date: Wed, 29 May 2019 15:28:03 -0700 Message-ID: <155916888365.758159.10884362336065224287.stgit@magnolia> In-Reply-To: <155916885106.758159.3471602893858635007.stgit@magnolia> References: <155916885106.758159.3471602893858635007.stgit@magnolia> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9272 signatures=668687 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=1 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1905290138 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9272 signatures=668687 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1905290138 Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Darrick J. Wong Wire up the new v5 BULKSTAT ioctl and rename the old one to V1. Signed-off-by: Darrick J. Wong --- fs/xfs/libxfs/xfs_fs.h | 24 +++++++++++ fs/xfs/xfs_ioctl.c | 104 ++++++++++++++++++++++++++++++++++++++++++++++++ fs/xfs/xfs_ioctl32.c | 1 fs/xfs/xfs_ondisk.h | 1 4 files changed, 129 insertions(+), 1 deletion(-) diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h index 8b8fe78511fb..960f3542e207 100644 --- a/fs/xfs/libxfs/xfs_fs.h +++ b/fs/xfs/libxfs/xfs_fs.h @@ -435,7 +435,6 @@ struct xfs_fsop_bulkreq { __s32 __user *ocount; /* output count pointer */ }; - /* * Structures returned from xfs_inumbers routine (XFS_IOC_FSINUMBERS). */ @@ -457,6 +456,28 @@ struct xfs_inumbers { #define XFS_INUMBERS_VERSION_V1 (1) #define XFS_INUMBERS_VERSION_V5 (5) +/* Header for bulk inode requests. */ +struct xfs_bulk_ireq { + uint64_t ino; /* I/O: start with this inode */ + uint32_t flags; /* I/O: operation flags */ + uint32_t icount; /* I: count of entries in buffer */ + uint32_t ocount; /* O: count of entries filled out */ + uint32_t reserved32; /* must be zero */ + uint64_t reserved[5]; /* must be zero */ +}; + +#define XFS_BULK_IREQ_FLAGS_ALL (0) + +/* + * ioctl structures for v5 bulkstat and inumbers requests + */ +struct xfs_bulkstat_req { + struct xfs_bulk_ireq hdr; + struct xfs_bulkstat bulkstat[]; +}; +#define XFS_BULKSTAT_REQ_SIZE(nr) (sizeof(struct xfs_bulkstat_req) + \ + (nr) * sizeof(struct xfs_bulkstat)) + /* * Error injection. */ @@ -758,6 +779,7 @@ struct xfs_scrub_metadata { #define XFS_IOC_FSGEOMETRY_V4 _IOR ('X', 124, struct xfs_fsop_geom_v4) #define XFS_IOC_GOINGDOWN _IOR ('X', 125, uint32_t) #define XFS_IOC_FSGEOMETRY _IOR ('X', 126, struct xfs_fsop_geom) +#define XFS_IOC_BULKSTAT _IOR ('X', 127, struct xfs_bulkstat_req) /* XFS_IOC_GETFSUUID ---------- deprecated 140 */ diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c index e43ad688e683..f6724c75ba97 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -822,6 +822,107 @@ xfs_ioc_fsbulkstat( return 0; } +/* Return 0 on success or positive error */ +static int +xfs_bulkstat_fmt( + struct xfs_ibulk *breq, + const struct xfs_bulkstat *bstat) +{ + if (copy_to_user(breq->ubuffer, bstat, sizeof(struct xfs_bulkstat))) + return -EFAULT; + return xfs_ibulk_advance(breq, sizeof(struct xfs_bulkstat)); +} + +/* + * Check the incoming bulk request @hdr from userspace and initialize the + * internal @breq bulk request appropriately. Returns 0 if the bulk request + * should proceed; 1 if there's nothing to do; or the usual negative error + * code. + */ +static int +xfs_bulk_ireq_setup( + struct xfs_mount *mp, + struct xfs_bulk_ireq *hdr, + struct xfs_ibulk *breq, + void __user *ubuffer) +{ + if (hdr->icount == 0 || + (hdr->flags & ~XFS_BULK_IREQ_FLAGS_ALL) || + hdr->reserved32 || + memchr_inv(hdr->reserved, 0, sizeof(hdr->reserved))) + return -EINVAL; + + if (XFS_INO_TO_AGNO(mp, hdr->ino) >= mp->m_sb.sb_agcount) + goto no_results; + + breq->ubuffer = ubuffer; + breq->icount = hdr->icount; + breq->startino = hdr->ino; + return 0; +no_results: + hdr->ocount = 0; + return 1; +} + +/* + * Update the userspace bulk request @hdr to reflect the end state of the + * internal bulk request @breq. If @error is negative then we return just + * that; otherwise (@error is 0 or 1) we copy the state so that userspace + * can discover what happened. + */ +static int +xfs_bulk_ireq_teardown( + struct xfs_bulk_ireq *hdr, + struct xfs_ibulk *breq, + int error) +{ + if (error < 0) + return error; + + hdr->ino = breq->startino; + hdr->ocount = breq->ocount; + return 0; +} + +/* Handle the v5 bulkstat ioctl. */ +STATIC int +xfs_ioc_bulkstat( + struct xfs_mount *mp, + unsigned int cmd, + struct xfs_bulkstat_req __user *arg) +{ + struct xfs_bulk_ireq hdr; + struct xfs_ibulk breq = { + .mp = mp, + }; + int error; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (XFS_FORCED_SHUTDOWN(mp)) + return -EIO; + + if (copy_from_user(&hdr, &arg->hdr, sizeof(hdr))) + return -EFAULT; + + error = xfs_bulk_ireq_setup(mp, &hdr, &breq, arg->bulkstat); + if (error < 0) + return error; + + if (!error) + error = xfs_bulkstat(&breq, xfs_bulkstat_fmt); + + error = xfs_bulk_ireq_teardown(&hdr, &breq, error); + if (error) + return error; + + if (copy_to_user(&arg->hdr, &hdr, sizeof(hdr))) + return -EFAULT; + + return 0; +} + STATIC int xfs_ioc_fsgeometry( struct xfs_mount *mp, @@ -1986,6 +2087,9 @@ xfs_file_ioctl( case XFS_IOC_FSINUMBERS: return xfs_ioc_fsbulkstat(mp, cmd, arg); + case XFS_IOC_BULKSTAT: + return xfs_ioc_bulkstat(mp, cmd, arg); + case XFS_IOC_FSGEOMETRY_V1: return xfs_ioc_fsgeometry(mp, arg, 3); case XFS_IOC_FSGEOMETRY_V4: diff --git a/fs/xfs/xfs_ioctl32.c b/fs/xfs/xfs_ioctl32.c index bfe71747776b..84c342be4536 100644 --- a/fs/xfs/xfs_ioctl32.c +++ b/fs/xfs/xfs_ioctl32.c @@ -576,6 +576,7 @@ xfs_file_compat_ioctl( case XFS_IOC_ERROR_CLEARALL: case FS_IOC_GETFSMAP: case XFS_IOC_SCRUB_METADATA: + case XFS_IOC_BULKSTAT: return xfs_file_ioctl(filp, cmd, p); #if !defined(BROKEN_X86_ALIGNMENT) || defined(CONFIG_X86_X32) /* diff --git a/fs/xfs/xfs_ondisk.h b/fs/xfs/xfs_ondisk.h index d8f941b4d51c..954484c6eb96 100644 --- a/fs/xfs/xfs_ondisk.h +++ b/fs/xfs/xfs_ondisk.h @@ -149,6 +149,7 @@ xfs_check_ondisk_structs(void) XFS_CHECK_STRUCT_SIZE(struct xfs_bulkstat, 192); XFS_CHECK_STRUCT_SIZE(struct xfs_inumbers, 24); + XFS_CHECK_STRUCT_SIZE(struct xfs_bulkstat_req, 64); } #endif /* __XFS_ONDISK_H */