From patchwork Fri May 21 07:29:07 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Aneesh Kumar K.V" X-Patchwork-Id: 101307 Received: from lists.sourceforge.net (lists.sourceforge.net [216.34.181.88]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o4L7TZ4J013590 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Fri, 21 May 2010 07:30:11 GMT Received: from localhost ([127.0.0.1] helo=sfs-ml-4.v29.ch3.sourceforge.com) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.69) (envelope-from ) id 1OFMfd-0006qO-PN; Fri, 21 May 2010 07:29:25 +0000 Received: from sfi-mx-2.v28.ch3.sourceforge.com ([172.29.28.122] helo=mx.sourceforge.net) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.69) (envelope-from ) id 1OFMfb-0006qA-Us for v9fs-developer@lists.sourceforge.net; Fri, 21 May 2010 07:29:23 +0000 X-ACL-Warn: Received: from e23smtp03.au.ibm.com ([202.81.31.145]) by sfi-mx-2.v28.ch3.sourceforge.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.69) id 1OFMfZ-0002sR-V1 for v9fs-developer@lists.sourceforge.net; Fri, 21 May 2010 07:29:23 +0000 Received: from d23relay05.au.ibm.com (d23relay05.au.ibm.com [202.81.31.247]) by e23smtp03.au.ibm.com (8.14.3/8.13.1) with ESMTP id o4L7Po90032517 for ; Fri, 21 May 2010 17:25:50 +1000 Received: from d23av03.au.ibm.com (d23av03.au.ibm.com [9.190.234.97]) by d23relay05.au.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id o4L7LuJv1597556 for ; Fri, 21 May 2010 17:21:56 +1000 Received: from d23av03.au.ibm.com (loopback [127.0.0.1]) by d23av03.au.ibm.com (8.14.3/8.13.1/NCO v10.0 AVout) with ESMTP id o4L7TEVg016721 for ; Fri, 21 May 2010 17:29:14 +1000 Received: from skywalker.in.ibm.com ([9.77.206.20]) by d23av03.au.ibm.com (8.14.3/8.13.1/NCO v10.0 AVin) with ESMTP id o4L7TBGF016674; Fri, 21 May 2010 17:29:12 +1000 From: "Aneesh Kumar K.V" To: v9fs-developer@lists.sourceforge.net Date: Fri, 21 May 2010 12:59:07 +0530 Message-Id: <1274426949-17713-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.1.78.g212f0 X-Spam-Score: 0.0 (/) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. _SUMMARY_ X-Headers-End: 1OFMfZ-0002sR-V1 Subject: [V9fs-developer] [PATCH 1/3] net/9p: Implement attrwalk 9p call X-BeenThere: v9fs-developer@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: v9fs-developer-bounces@lists.sourceforge.net X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Fri, 21 May 2010 07:30:11 +0000 (UTC) diff --git a/include/net/9p/9p.h b/include/net/9p/9p.h index 156c26b..f45104b 100644 --- a/include/net/9p/9p.h +++ b/include/net/9p/9p.h @@ -133,6 +133,8 @@ enum p9_msg_t { P9_RSTATFS, P9_TRENAME = 20, P9_RRENAME, + P9_TXATTRWALK = 30, + P9_RXATTRWALK, P9_TVERSION = 100, P9_RVERSION, P9_TAUTH = 102, diff --git a/include/net/9p/client.h b/include/net/9p/client.h index 7dd3ed8..1eb365d 100644 --- a/include/net/9p/client.h +++ b/include/net/9p/client.h @@ -219,7 +219,7 @@ int p9_client_write(struct p9_fid *fid, char *data, const char __user *udata, u64 offset, u32 count); struct p9_wstat *p9_client_stat(struct p9_fid *fid); int p9_client_wstat(struct p9_fid *fid, struct p9_wstat *wst); - +extern struct p9_fid *p9_client_xattrwalk(struct p9_fid *, const char *, u64 *); struct p9_req_t *p9_tag_lookup(struct p9_client *, u16); void p9_client_cb(struct p9_client *c, struct p9_req_t *req); diff --git a/net/9p/client.c b/net/9p/client.c index 37c8da0..6217739 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -1432,3 +1432,52 @@ error: } EXPORT_SYMBOL(p9_client_rename); +/* + * An xattrwalk without @attr_name gives the fid for the lisxattr namespace + */ +struct p9_fid *p9_client_xattrwalk(struct p9_fid *file_fid, + const char *attr_name, u64 *attr_size) +{ + int err; + struct p9_req_t *req; + struct p9_client *clnt; + struct p9_fid *attr_fid; + + err = 0; + clnt = file_fid->clnt; + attr_fid = p9_fid_create(clnt); + if (IS_ERR(attr_fid)) { + err = PTR_ERR(attr_fid); + attr_fid = NULL; + goto error; + } + P9_DPRINTK(P9_DEBUG_9P, + ">>> TXATTRWALK file_fid %d, attr_fid %d name %s\n", + file_fid->fid, attr_fid->fid, attr_name); + + req = p9_client_rpc(clnt, P9_TXATTRWALK, "dds", + file_fid->fid, attr_fid->fid, attr_name); + if (IS_ERR(req)) { + err = PTR_ERR(req); + goto error; + } + err = p9pdu_readf(req->rc, clnt->proto_version, "q", attr_size); + if (err) { + p9pdu_dump(1, req->rc); + p9_free_req(clnt, req); + goto clunk_fid; + } + p9_free_req(clnt, req); + P9_DPRINTK(P9_DEBUG_9P, "<<< RXATTRWALK fid %d size %llu\n", + attr_fid->fid, *attr_size); + return attr_fid; +clunk_fid: + p9_client_clunk(attr_fid); + attr_fid = NULL; +error: + if (attr_fid && (attr_fid != file_fid)) + p9_fid_destroy(attr_fid); + + return ERR_PTR(err); +} +EXPORT_SYMBOL_GPL(p9_client_xattrwalk);