diff options
| -rw-r--r-- | include/net/9p/9p.h | 2 | ||||
| -rw-r--r-- | include/net/9p/client.h | 1 | ||||
| -rw-r--r-- | net/9p/client.c | 50 |
3 files changed, 53 insertions, 0 deletions
diff --git a/include/net/9p/9p.h b/include/net/9p/9p.h index cf580a40e299..6fabb5e559ba 100644 --- a/include/net/9p/9p.h +++ b/include/net/9p/9p.h @@ -153,6 +153,8 @@ enum p9_msg_t { P9_RGETATTR, P9_TSETATTR = 26, P9_RSETATTR, + P9_TXATTRWALK = 30, + P9_RXATTRWALK, P9_TREADDIR = 40, P9_RREADDIR, P9_TLINK = 70, diff --git a/include/net/9p/client.h b/include/net/9p/client.h index d755c0ed6750..60398b1a3f75 100644 --- a/include/net/9p/client.h +++ b/include/net/9p/client.h @@ -260,5 +260,6 @@ void p9stat_free(struct p9_wstat *); int p9_is_proto_dotu(struct p9_client *clnt); int p9_is_proto_dotl(struct p9_client *clnt); +struct p9_fid *p9_client_xattrwalk(struct p9_fid *, const char *, u64 *); #endif /* NET_9P_CLIENT_H */ diff --git a/net/9p/client.c b/net/9p/client.c index c458e042d384..ec80ee71d453 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -1622,6 +1622,56 @@ 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); + int p9_client_readdir(struct p9_fid *fid, char *data, u32 count, u64 offset) { int err, rsize, total; |