From patchwork Tue Apr 9 12:40:25 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Shilovsky X-Patchwork-Id: 2415101 Return-Path: X-Original-To: patchwork-cifs-client@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id 0C90FDF25A for ; Tue, 9 Apr 2013 12:38:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964867Ab3DIMgp (ORCPT ); Tue, 9 Apr 2013 08:36:45 -0400 Received: from mail-la0-f52.google.com ([209.85.215.52]:64591 "EHLO mail-la0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S936962Ab3DIMgm (ORCPT ); Tue, 9 Apr 2013 08:36:42 -0400 Received: by mail-la0-f52.google.com with SMTP id ej20so2156262lab.11 for ; Tue, 09 Apr 2013 05:36:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-received:sender:from:to:cc:subject:date:message-id:x-mailer :in-reply-to:references; bh=zoCCnXp8xk46uQimfs7VRN0G8L5x9w+/lnp7VR6wxQ8=; b=z5YydwR1+mXw49dxidcIVWU57uPXwnVKnpvX2k/NFDz0EZIWDOTczMBrs2vpB+PqMA dqLs/qiHLsffkddlyrzzzrMT/kpXlChm6xB46d53OnLleaOludZA1Q9jWbW1NKjSpt9c PuZxWvc5QhD+szHJGPlhC3BvxyHJsJ8/FePxWmpfIuZt/iImQVAisRSWrr+jIsDzVFfe qY05w9Rguo09qwliIptMUrIzy5FOe+GC20M681HCJwN6/CZ42ZLCiqE1hcdGKfS87EWR cEjbKKCmJ/8KPTkPR1fIi7p+66mQtNcBwPBocKiXSl0PfK2kGf1sRAtLZEwvOzf62IlY jWVw== X-Received: by 10.112.146.133 with SMTP id tc5mr13639395lbb.88.1365511000014; Tue, 09 Apr 2013 05:36:40 -0700 (PDT) Received: from workstation.localdomain (PPPoE-78-29-80-229.san.ru. [78.29.80.229]) by mx.google.com with ESMTPS id i3sm12413591lbn.0.2013.04.09.05.36.37 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 09 Apr 2013 05:36:38 -0700 (PDT) From: Pavel Shilovsky To: linux-kernel@vger.kernel.org Cc: linux-cifs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-nfs@vger.kernel.org, wine-devel@winehq.org Subject: [PATCH v5 5/7] NFSv4: Add O_DENY* open flags support Date: Tue, 9 Apr 2013 16:40:25 +0400 Message-Id: <1365511227-17626-6-git-send-email-piastry@etersoft.ru> X-Mailer: git-send-email 1.8.1.5 In-Reply-To: <1365511227-17626-1-git-send-email-piastry@etersoft.ru> References: <1365511227-17626-1-git-send-email-piastry@etersoft.ru> Sender: linux-cifs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org by passing these flags to NFSv4 open request. Also make it return -EBUSY on share conflicts with other opens. Signed-off-by: Pavel Shilovsky --- fs/nfs/internal.h | 3 ++- fs/nfs/nfs4proc.c | 4 +++- fs/nfs/nfs4super.c | 9 ++++++--- fs/nfs/nfs4xdr.c | 21 +++++++++++++++++---- fs/nfs/super.c | 7 +++++-- 5 files changed, 33 insertions(+), 11 deletions(-) diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index f0e6c7d..c770830 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -6,7 +6,8 @@ #include #include -#define NFS_MS_MASK (MS_RDONLY|MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS) +#define NFS_MS_MASK (MS_RDONLY | MS_NOSUID | MS_NODEV | MS_NOEXEC | \ + MS_SYNCHRONOUS | MS_SHARELOCK) struct nfs_string; diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 3cb5e77..5d44763 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -100,7 +100,7 @@ static int nfs4_map_errors(int err) case -NFS4ERR_BADNAME: return -EINVAL; case -NFS4ERR_SHARE_DENIED: - return -EACCES; + return -EBUSY; case -NFS4ERR_MINOR_VERS_MISMATCH: return -EPROTONOSUPPORT; case -NFS4ERR_ACCESS: @@ -793,6 +793,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, atomic_inc(&sp->so_count); p->o_arg.fh = NFS_FH(dir); p->o_arg.open_flags = flags; + if (!IS_SHARELOCK(dir)) + p->o_arg.open_flags &= ~(O_DENYREAD | O_DENYWRITE); p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS * will return permission denied for all bits until close */ diff --git a/fs/nfs/nfs4super.c b/fs/nfs/nfs4super.c index 84d2e9e..ca791cd 100644 --- a/fs/nfs/nfs4super.c +++ b/fs/nfs/nfs4super.c @@ -28,7 +28,8 @@ static struct file_system_type nfs4_remote_fs_type = { .name = "nfs4", .mount = nfs4_remote_mount, .kill_sb = nfs_kill_super, - .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA, + .fs_flags = FS_RENAME_DOES_D_MOVE | FS_REVAL_DOT | + FS_BINARY_MOUNTDATA | FS_DOES_SHARELOCK, }; static struct file_system_type nfs4_remote_referral_fs_type = { @@ -36,7 +37,8 @@ static struct file_system_type nfs4_remote_referral_fs_type = { .name = "nfs4", .mount = nfs4_remote_referral_mount, .kill_sb = nfs_kill_super, - .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA, + .fs_flags = FS_RENAME_DOES_D_MOVE | FS_REVAL_DOT | + FS_BINARY_MOUNTDATA | FS_DOES_SHARELOCK, }; struct file_system_type nfs4_referral_fs_type = { @@ -44,7 +46,8 @@ struct file_system_type nfs4_referral_fs_type = { .name = "nfs4", .mount = nfs4_referral_mount, .kill_sb = nfs_kill_super, - .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA, + .fs_flags = FS_RENAME_DOES_D_MOVE | FS_REVAL_DOT | + FS_BINARY_MOUNTDATA | FS_DOES_SHARELOCK, }; static const struct super_operations nfs4_sops = { diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 26b1439..8fe0221 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -1325,7 +1325,8 @@ static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struc encode_string(xdr, name->len, name->name); } -static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode) +static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode, + int open_flags) { __be32 *p; @@ -1343,7 +1344,19 @@ static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode) default: *p++ = cpu_to_be32(0); } - *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */ + switch (open_flags & (O_DENYREAD|O_DENYWRITE)) { + case O_DENYREAD: + *p = cpu_to_be32(NFS4_SHARE_DENY_READ); + break; + case O_DENYWRITE: + *p = cpu_to_be32(NFS4_SHARE_DENY_WRITE); + break; + case O_DENYREAD|O_DENYWRITE: + *p = cpu_to_be32(NFS4_SHARE_DENY_BOTH); + break; + default: + *p = cpu_to_be32(0); + } } static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg) @@ -1354,7 +1367,7 @@ static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_opena * owner 4 = 32 */ encode_nfs4_seqid(xdr, arg->seqid); - encode_share_access(xdr, arg->fmode); + encode_share_access(xdr, arg->fmode, arg->open_flags); p = reserve_space(xdr, 36); p = xdr_encode_hyper(p, arg->clientid); *p++ = cpu_to_be32(24); @@ -1491,7 +1504,7 @@ static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_close encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr); encode_nfs4_stateid(xdr, arg->stateid); encode_nfs4_seqid(xdr, arg->seqid); - encode_share_access(xdr, arg->fmode); + encode_share_access(xdr, arg->fmode, 0); } static void diff --git a/fs/nfs/super.c b/fs/nfs/super.c index b056b16..cf9db61 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -331,7 +331,8 @@ struct file_system_type nfs4_fs_type = { .name = "nfs4", .mount = nfs_fs_mount, .kill_sb = nfs_kill_super, - .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA, + .fs_flags = FS_RENAME_DOES_D_MOVE | FS_REVAL_DOT | + FS_BINARY_MOUNTDATA | FS_DOES_SHARELOCK, }; EXPORT_SYMBOL_GPL(nfs4_fs_type); @@ -2589,6 +2590,8 @@ nfs_xdev_mount(struct file_system_type *fs_type, int flags, struct nfs_server *server; struct dentry *mntroot = ERR_PTR(-ENOMEM); struct nfs_subversion *nfs_mod = NFS_SB(data->sb)->nfs_client->cl_nfs_mod; + /* save sharelock option */ + int sharelock = data->sb->s_flags & MS_SHARELOCK; dprintk("--> nfs_xdev_mount()\n"); @@ -2600,7 +2603,7 @@ nfs_xdev_mount(struct file_system_type *fs_type, int flags, if (IS_ERR(server)) mntroot = ERR_CAST(server); else - mntroot = nfs_fs_mount_common(server, flags, + mntroot = nfs_fs_mount_common(server, flags | sharelock, dev_name, &mount_info, nfs_mod); dprintk("<-- nfs_xdev_mount() = %ld\n",