int p9_client_remove(struct p9_fid *fid)
{
int err;
struct p9_fcall *tc, *rc;
struct p9_client *clnt;
P9_DPRINTK(P9_DEBUG_9P, "fid %d\n", fid->fid);
err = 0;
tc = NULL;
rc = NULL;
clnt = fid->clnt;
tc = p9_create_tremove(fid->fid);
if (IS_ERR(tc)) {
err = PTR_ERR(tc);
tc = NULL;
goto done;
}
err = p9_conn_rpc(clnt->conn, tc, &rc);
if (err)
goto done;
p9_fid_destroy(fid);
done:
kfree(tc);
kfree(rc);
return err;
}
struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,
char *uname, u32 n_uname, char *aname)
{
int err;
struct p9_req_t *req;
struct p9_fid *fid;
struct p9_qid qid;
P9_DPRINTK(P9_DEBUG_9P, ">>> TATTACH afid %d uname %s aname %s\n",
afid ? afid->fid : -1, uname, aname);
err = 0;
fid = p9_fid_create(clnt);
if (IS_ERR(fid)) {
err = PTR_ERR(fid);
fid = NULL;
goto error;
}
req = p9_client_rpc(clnt, P9_TATTACH, "ddss?d", fid->fid,
afid ? afid->fid : P9_NOFID, uname, aname, n_uname);
if (IS_ERR(req)) {
err = PTR_ERR(req);
goto error;
}
err = p9pdu_readf(req->rc, clnt->dotu, "Q", &qid);
if (err) {
p9pdu_dump(1, req->rc);
p9_free_req(clnt, req);
goto error;
}
P9_DPRINTK(P9_DEBUG_9P, "<<< RATTACH qid %x.%llx.%x\n",
qid.type,
(unsigned long long)qid.path,
qid.version);
memmove(&fid->qid, &qid, sizeof(struct p9_qid));
p9_free_req(clnt, req);
return fid;
error:
if (fid)
p9_fid_destroy(fid);
return ERR_PTR(err);
}
struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,
char *uname, u32 n_uname, char *aname)
{
int err;
struct p9_fcall *tc, *rc;
struct p9_fid *fid;
P9_DPRINTK(P9_DEBUG_9P, "clnt %p afid %d uname %s aname %s\n",
clnt, afid?afid->fid:-1, uname, aname);
err = 0;
tc = NULL;
rc = NULL;
fid = p9_fid_create(clnt);
if (IS_ERR(fid)) {
err = PTR_ERR(fid);
fid = NULL;
goto error;
}
tc = p9_create_tattach(fid->fid, afid?afid->fid:P9_NOFID, uname, aname,
n_uname, clnt->dotu);
if (IS_ERR(tc)) {
err = PTR_ERR(tc);
tc = NULL;
goto error;
}
err = p9_conn_rpc(clnt->conn, tc, &rc);
if (err)
goto error;
memmove(&fid->qid, &rc->params.rattach.qid, sizeof(struct p9_qid));
kfree(tc);
kfree(rc);
return fid;
error:
kfree(tc);
kfree(rc);
if (fid)
p9_fid_destroy(fid);
return ERR_PTR(err);
}
void p9_client_destroy(struct p9_client *clnt)
{
struct p9_fid *fid, *fidptr;
P9_DPRINTK(P9_DEBUG_MUX, "clnt %p\n", clnt);
if (clnt->trans_mod)
clnt->trans_mod->close(clnt);
v9fs_put_trans(clnt->trans_mod);
list_for_each_entry_safe(fid, fidptr, &clnt->fidlist, flist)
p9_fid_destroy(fid);
if (clnt->fidpool)
p9_idpool_destroy(clnt->fidpool);
p9_tag_cleanup(clnt);
kfree(clnt);
}
int p9_client_remove(struct p9_fid *fid)
{
int err;
struct p9_client *clnt;
struct p9_req_t *req;
P9_DPRINTK(P9_DEBUG_9P, ">>> TREMOVE fid %d\n", fid->fid);
err = 0;
clnt = fid->clnt;
req = p9_client_rpc(clnt, P9_TREMOVE, "d", fid->fid);
if (IS_ERR(req)) {
err = PTR_ERR(req);
goto error;
}
P9_DPRINTK(P9_DEBUG_9P, "<<< RREMOVE fid %d\n", fid->fid);
p9_free_req(clnt, req);
p9_fid_destroy(fid);
error:
return err;
}
void p9_client_destroy(struct p9_client *clnt)
{
struct p9_fid *fid, *fidptr;
P9_DPRINTK(P9_DEBUG_9P, "clnt %p\n", clnt);
if (clnt->conn) {
p9_conn_destroy(clnt->conn);
clnt->conn = NULL;
}
if (clnt->trans) {
clnt->trans->close(clnt->trans);
kfree(clnt->trans);
clnt->trans = NULL;
}
list_for_each_entry_safe(fid, fidptr, &clnt->fidlist, flist)
p9_fid_destroy(fid);
if (clnt->fidpool)
p9_idpool_destroy(clnt->fidpool);
kfree(clnt);
}
struct p9_fid *p9_client_walk(struct p9_fid *oldfid, int nwname, char **wnames,
int clone)
{
int err;
struct p9_client *clnt;
struct p9_fid *fid;
struct p9_qid *wqids;
struct p9_req_t *req;
int16_t nwqids, count;
err = 0;
clnt = oldfid->clnt;
if (clone) {
fid = p9_fid_create(clnt);
if (IS_ERR(fid)) {
err = PTR_ERR(fid);
fid = NULL;
goto error;
}
fid->uid = oldfid->uid;
} else
fid = oldfid;
P9_DPRINTK(P9_DEBUG_9P, ">>> TWALK fids %d,%d nwname %d wname[0] %s\n",
oldfid->fid, fid->fid, nwname, wnames ? wnames[0] : NULL);
req = p9_client_rpc(clnt, P9_TWALK, "ddT", oldfid->fid, fid->fid,
nwname, wnames);
if (IS_ERR(req)) {
err = PTR_ERR(req);
goto error;
}
err = p9pdu_readf(req->rc, clnt->dotu, "R", &nwqids, &wqids);
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, "<<< RWALK nwqid %d:\n", nwqids);
if (nwqids != nwname) {
err = -ENOENT;
goto clunk_fid;
}
for (count = 0; count < nwqids; count++)
P9_DPRINTK(P9_DEBUG_9P, "<<< [%d] %x.%llx.%x\n",
count, wqids[count].type, wqids[count].path,
wqids[count].version);
if (nwname)
memmove(&fid->qid, &wqids[nwqids - 1], sizeof(struct p9_qid));
else
fid->qid = oldfid->qid;
return fid;
clunk_fid:
p9_client_clunk(fid);
fid = NULL;
error:
if (fid && (fid != oldfid))
p9_fid_destroy(fid);
return ERR_PTR(err);
}
struct p9_fid *p9_client_walk(struct p9_fid *oldfid, int nwname, char **wnames,
int clone)
{
int err;
struct p9_fcall *tc, *rc;
struct p9_client *clnt;
struct p9_fid *fid;
P9_DPRINTK(P9_DEBUG_9P, "fid %d nwname %d wname[0] %s\n",
oldfid->fid, nwname, wnames?wnames[0]:NULL);
err = 0;
tc = NULL;
rc = NULL;
clnt = oldfid->clnt;
if (clone) {
fid = p9_fid_create(clnt);
if (IS_ERR(fid)) {
err = PTR_ERR(fid);
fid = NULL;
goto error;
}
fid->uid = oldfid->uid;
} else
fid = oldfid;
tc = p9_create_twalk(oldfid->fid, fid->fid, nwname, wnames);
if (IS_ERR(tc)) {
err = PTR_ERR(tc);
tc = NULL;
goto error;
}
err = p9_conn_rpc(clnt->conn, tc, &rc);
if (err) {
if (rc && rc->id == P9_RWALK)
goto clunk_fid;
else
goto error;
}
if (rc->params.rwalk.nwqid != nwname) {
err = -ENOENT;
goto clunk_fid;
}
if (nwname)
memmove(&fid->qid,
&rc->params.rwalk.wqids[rc->params.rwalk.nwqid - 1],
sizeof(struct p9_qid));
else
fid->qid = oldfid->qid;
kfree(tc);
kfree(rc);
return fid;
clunk_fid:
kfree(tc);
kfree(rc);
rc = NULL;
tc = p9_create_tclunk(fid->fid);
if (IS_ERR(tc)) {
err = PTR_ERR(tc);
tc = NULL;
goto error;
}
p9_conn_rpc(clnt->conn, tc, &rc);
error:
kfree(tc);
kfree(rc);
if (fid && (fid != oldfid))
p9_fid_destroy(fid);
return ERR_PTR(err);
}
