6 * Copyright (C) 2008 by Eric Van Hensbergen <ericvh@gmail.com>
7 * Copyright (C) 2007 by Latchesar Ionkov <lucho@ionkov.net>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2
11 * as published by the Free Software Foundation.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to:
20 * Free Software Foundation
21 * 51 Franklin Street, Fifth Floor
22 * Boston, MA 02111-1301 USA
26 #include <linux/module.h>
27 #include <linux/errno.h>
29 #include <linux/poll.h>
30 #include <linux/idr.h>
31 #include <linux/mutex.h>
32 #include <linux/slab.h>
33 #include <linux/sched.h>
34 #include <linux/uaccess.h>
35 #include <net/9p/9p.h>
36 #include <linux/parser.h>
37 #include <net/9p/client.h>
38 #include <net/9p/transport.h>
42 * Client Option Parsing (code inspired by NFS code)
43 * - a little lazy - parse all client options
54 static const match_table_t tokens = {
55 {Opt_msize, "msize=%u"},
56 {Opt_legacy, "noextend"},
57 {Opt_trans, "trans=%s"},
58 {Opt_version, "version=%s"},
62 inline int p9_is_proto_dotl(struct p9_client *clnt)
64 return clnt->proto_version == p9_proto_2000L;
66 EXPORT_SYMBOL(p9_is_proto_dotl);
68 inline int p9_is_proto_dotu(struct p9_client *clnt)
70 return clnt->proto_version == p9_proto_2000u;
72 EXPORT_SYMBOL(p9_is_proto_dotu);
74 /* Interpret mount option for protocol version */
75 static int get_protocol_version(const substring_t *name)
77 int version = -EINVAL;
79 if (!strncmp("9p2000", name->from, name->to-name->from)) {
80 version = p9_proto_legacy;
81 P9_DPRINTK(P9_DEBUG_9P, "Protocol version: Legacy\n");
82 } else if (!strncmp("9p2000.u", name->from, name->to-name->from)) {
83 version = p9_proto_2000u;
84 P9_DPRINTK(P9_DEBUG_9P, "Protocol version: 9P2000.u\n");
85 } else if (!strncmp("9p2000.L", name->from, name->to-name->from)) {
86 version = p9_proto_2000L;
87 P9_DPRINTK(P9_DEBUG_9P, "Protocol version: 9P2000.L\n");
89 P9_DPRINTK(P9_DEBUG_ERROR, "Unknown protocol version %s. ",
96 * parse_options - parse mount options into client structure
97 * @opts: options string passed from mount
98 * @clnt: existing v9fs client information
100 * Return 0 upon success, -ERRNO upon failure
103 static int parse_opts(char *opts, struct p9_client *clnt)
105 char *options, *tmp_options;
107 substring_t args[MAX_OPT_ARGS];
111 clnt->proto_version = p9_proto_2000u;
117 tmp_options = kstrdup(opts, GFP_KERNEL);
119 P9_DPRINTK(P9_DEBUG_ERROR,
120 "failed to allocate copy of option string\n");
123 options = tmp_options;
125 while ((p = strsep(&options, ",")) != NULL) {
129 token = match_token(p, tokens, args);
130 if (token < Opt_trans) {
131 int r = match_int(&args[0], &option);
133 P9_DPRINTK(P9_DEBUG_ERROR,
134 "integer field, but no integer?\n");
141 clnt->msize = option;
144 clnt->trans_mod = v9fs_get_trans_by_name(&args[0]);
145 if(clnt->trans_mod == NULL) {
146 P9_DPRINTK(P9_DEBUG_ERROR,
147 "Could not find request transport: %s\n",
150 goto free_and_return;
154 clnt->proto_version = p9_proto_legacy;
157 ret = get_protocol_version(&args[0]);
159 goto free_and_return;
160 clnt->proto_version = ret;
173 * p9_tag_alloc - lookup/allocate a request by tag
174 * @c: client session to lookup tag within
175 * @tag: numeric id for transaction
177 * this is a simple array lookup, but will grow the
178 * request_slots as necessary to accommodate transaction
179 * ids which did not previously have a slot.
181 * this code relies on the client spinlock to manage locks, its
182 * possible we should switch to something else, but I'd rather
183 * stick with something low-overhead for the common case.
187 static struct p9_req_t *p9_tag_alloc(struct p9_client *c, u16 tag)
191 struct p9_req_t *req;
193 /* This looks up the original request by tag so we know which
194 * buffer to read the data into */
197 if (tag >= c->max_tag) {
198 spin_lock_irqsave(&c->lock, flags);
199 /* check again since original check was outside of lock */
200 while (tag >= c->max_tag) {
201 row = (tag / P9_ROW_MAXTAG);
202 c->reqs[row] = kcalloc(P9_ROW_MAXTAG,
203 sizeof(struct p9_req_t), GFP_ATOMIC);
206 printk(KERN_ERR "Couldn't grow tag array\n");
207 spin_unlock_irqrestore(&c->lock, flags);
208 return ERR_PTR(-ENOMEM);
210 for (col = 0; col < P9_ROW_MAXTAG; col++) {
211 c->reqs[row][col].status = REQ_STATUS_IDLE;
212 c->reqs[row][col].tc = NULL;
214 c->max_tag += P9_ROW_MAXTAG;
216 spin_unlock_irqrestore(&c->lock, flags);
218 row = tag / P9_ROW_MAXTAG;
219 col = tag % P9_ROW_MAXTAG;
221 req = &c->reqs[row][col];
223 req->wq = kmalloc(sizeof(wait_queue_head_t), GFP_NOFS);
225 printk(KERN_ERR "Couldn't grow tag array\n");
226 return ERR_PTR(-ENOMEM);
228 init_waitqueue_head(req->wq);
229 if ((c->trans_mod->pref & P9_TRANS_PREF_PAYLOAD_MASK) ==
230 P9_TRANS_PREF_PAYLOAD_SEP) {
231 int alloc_msize = min(c->msize, 4096);
232 req->tc = kmalloc(sizeof(struct p9_fcall)+alloc_msize,
234 req->tc->capacity = alloc_msize;
235 req->rc = kmalloc(sizeof(struct p9_fcall)+alloc_msize,
237 req->rc->capacity = alloc_msize;
239 req->tc = kmalloc(sizeof(struct p9_fcall)+c->msize,
241 req->tc->capacity = c->msize;
242 req->rc = kmalloc(sizeof(struct p9_fcall)+c->msize,
244 req->rc->capacity = c->msize;
246 if ((!req->tc) || (!req->rc)) {
247 printk(KERN_ERR "Couldn't grow tag array\n");
251 req->tc = req->rc = NULL;
253 return ERR_PTR(-ENOMEM);
255 req->tc->sdata = (char *) req->tc + sizeof(struct p9_fcall);
256 req->rc->sdata = (char *) req->rc + sizeof(struct p9_fcall);
259 p9pdu_reset(req->tc);
260 p9pdu_reset(req->rc);
262 req->tc->tag = tag-1;
263 req->status = REQ_STATUS_ALLOC;
265 return &c->reqs[row][col];
269 * p9_tag_lookup - lookup a request by tag
270 * @c: client session to lookup tag within
271 * @tag: numeric id for transaction
275 struct p9_req_t *p9_tag_lookup(struct p9_client *c, u16 tag)
279 /* This looks up the original request by tag so we know which
280 * buffer to read the data into */
283 if(tag >= c->max_tag)
286 row = tag / P9_ROW_MAXTAG;
287 col = tag % P9_ROW_MAXTAG;
289 return &c->reqs[row][col];
291 EXPORT_SYMBOL(p9_tag_lookup);
294 * p9_tag_init - setup tags structure and contents
295 * @c: v9fs client struct
297 * This initializes the tags structure for each client instance.
301 static int p9_tag_init(struct p9_client *c)
305 c->tagpool = p9_idpool_create();
306 if (IS_ERR(c->tagpool)) {
307 err = PTR_ERR(c->tagpool);
310 err = p9_idpool_get(c->tagpool); /* reserve tag 0 */
312 p9_idpool_destroy(c->tagpool);
321 * p9_tag_cleanup - cleans up tags structure and reclaims resources
322 * @c: v9fs client struct
324 * This frees resources associated with the tags structure
327 static void p9_tag_cleanup(struct p9_client *c)
331 /* check to insure all requests are idle */
332 for (row = 0; row < (c->max_tag/P9_ROW_MAXTAG); row++) {
333 for (col = 0; col < P9_ROW_MAXTAG; col++) {
334 if (c->reqs[row][col].status != REQ_STATUS_IDLE) {
335 P9_DPRINTK(P9_DEBUG_MUX,
336 "Attempting to cleanup non-free tag %d,%d\n",
338 /* TODO: delay execution of cleanup */
345 p9_idpool_put(0, c->tagpool); /* free reserved tag 0 */
346 p9_idpool_destroy(c->tagpool);
349 /* free requests associated with tags */
350 for (row = 0; row < (c->max_tag/P9_ROW_MAXTAG); row++) {
351 for (col = 0; col < P9_ROW_MAXTAG; col++) {
352 kfree(c->reqs[row][col].wq);
353 kfree(c->reqs[row][col].tc);
354 kfree(c->reqs[row][col].rc);
362 * p9_free_req - free a request and clean-up as necessary
364 * r: request to release
368 static void p9_free_req(struct p9_client *c, struct p9_req_t *r)
370 int tag = r->tc->tag;
371 P9_DPRINTK(P9_DEBUG_MUX, "clnt %p req %p tag: %d\n", c, r, tag);
373 r->status = REQ_STATUS_IDLE;
374 if (tag != P9_NOTAG && p9_idpool_check(tag, c->tagpool))
375 p9_idpool_put(tag, c->tagpool);
379 * p9_client_cb - call back from transport to client
381 * req: request received
384 void p9_client_cb(struct p9_client *c, struct p9_req_t *req)
386 P9_DPRINTK(P9_DEBUG_MUX, " tag %d\n", req->tc->tag);
388 P9_DPRINTK(P9_DEBUG_MUX, "wakeup: %d\n", req->tc->tag);
390 EXPORT_SYMBOL(p9_client_cb);
393 * p9_parse_header - parse header arguments out of a packet
394 * @pdu: packet to parse
395 * @size: size of packet
396 * @type: type of request
397 * @tag: tag of packet
398 * @rewind: set if we need to rewind offset afterwards
402 p9_parse_header(struct p9_fcall *pdu, int32_t *size, int8_t *type, int16_t *tag,
408 int offset = pdu->offset;
415 err = p9pdu_readf(pdu, 0, "dbw", &r_size, &r_type, &r_tag);
417 goto rewind_and_exit;
423 P9_DPRINTK(P9_DEBUG_9P, "<<< size=%d type: %d tag: %d\n", pdu->size,
436 pdu->offset = offset;
439 EXPORT_SYMBOL(p9_parse_header);
442 * p9_check_errors - check 9p packet for error return and process it
443 * @c: current client instance
444 * @req: request to parse and check for error conditions
446 * returns error code if one is discovered, otherwise returns 0
448 * this will have to be more complicated if we have multiple
452 static int p9_check_errors(struct p9_client *c, struct p9_req_t *req)
458 err = p9_parse_header(req->rc, NULL, &type, NULL, 0);
460 P9_DPRINTK(P9_DEBUG_ERROR, "couldn't parse header %d\n", err);
464 if (type != P9_RERROR && type != P9_RLERROR)
467 if (!p9_is_proto_dotl(c)) {
470 if (req->tc->pbuf_size) {
471 /* Handle user buffers */
472 size_t len = req->rc->size - req->rc->offset;
473 if (req->tc->pubuf) {
475 err = copy_from_user(
476 &req->rc->sdata[req->rc->offset],
477 req->tc->pubuf, len);
484 memmove(&req->rc->sdata[req->rc->offset],
485 req->tc->pkbuf, len);
488 err = p9pdu_readf(req->rc, c->proto_version, "s?d",
493 if (p9_is_proto_dotu(c))
496 if (!err || !IS_ERR_VALUE(err)) {
497 err = p9_errstr2errno(ename, strlen(ename));
499 P9_DPRINTK(P9_DEBUG_9P, "<<< RERROR (%d) %s\n", -ecode,
505 err = p9pdu_readf(req->rc, c->proto_version, "d", &ecode);
508 P9_DPRINTK(P9_DEBUG_9P, "<<< RLERROR (%d)\n", -ecode);
515 P9_DPRINTK(P9_DEBUG_ERROR, "couldn't parse error%d\n", err);
520 static struct p9_req_t *
521 p9_client_rpc(struct p9_client *c, int8_t type, const char *fmt, ...);
524 * p9_client_flush - flush (cancel) a request
526 * @oldreq: request to cancel
528 * This sents a flush for a particular request and links
529 * the flush request to the original request. The current
530 * code only supports a single flush request although the protocol
531 * allows for multiple flush requests to be sent for a single request.
535 static int p9_client_flush(struct p9_client *c, struct p9_req_t *oldreq)
537 struct p9_req_t *req;
541 err = p9_parse_header(oldreq->tc, NULL, NULL, &oldtag, 1);
545 P9_DPRINTK(P9_DEBUG_9P, ">>> TFLUSH tag %d\n", oldtag);
547 req = p9_client_rpc(c, P9_TFLUSH, "w", oldtag);
552 /* if we haven't received a response for oldreq,
553 remove it from the list. */
555 if (oldreq->status == REQ_STATUS_FLSH)
556 list_del(&oldreq->req_list);
557 spin_unlock(&c->lock);
564 * p9_client_rpc - issue a request and wait for a response
566 * @type: type of request
567 * @fmt: protocol format string (see protocol.c)
569 * Returns request structure (which client must free using p9_free_req)
572 static struct p9_req_t *
573 p9_client_rpc(struct p9_client *c, int8_t type, const char *fmt, ...)
577 struct p9_req_t *req;
581 P9_DPRINTK(P9_DEBUG_MUX, "client %p op %d\n", c, type);
583 /* we allow for any status other than disconnected */
584 if (c->status == Disconnected)
585 return ERR_PTR(-EIO);
587 /* if status is begin_disconnected we allow only clunk request */
588 if ((c->status == BeginDisconnect) && (type != P9_TCLUNK))
589 return ERR_PTR(-EIO);
591 if (signal_pending(current)) {
593 clear_thread_flag(TIF_SIGPENDING);
598 if (type != P9_TVERSION) {
599 tag = p9_idpool_get(c->tagpool);
601 return ERR_PTR(-ENOMEM);
604 req = p9_tag_alloc(c, tag);
608 /* marshall the data */
609 p9pdu_prepare(req->tc, tag, type);
611 err = p9pdu_vwritef(req->tc, c->proto_version, fmt, ap);
615 p9pdu_finalize(req->tc);
617 err = c->trans_mod->request(c, req);
619 if (err != -ERESTARTSYS && err != -EFAULT)
620 c->status = Disconnected;
624 P9_DPRINTK(P9_DEBUG_MUX, "wait %p tag: %d\n", req->wq, tag);
625 err = wait_event_interruptible(*req->wq,
626 req->status >= REQ_STATUS_RCVD);
627 P9_DPRINTK(P9_DEBUG_MUX, "wait %p tag: %d returned %d\n",
630 if (req->status == REQ_STATUS_ERROR) {
631 P9_DPRINTK(P9_DEBUG_ERROR, "req_status error %d\n", req->t_err);
635 if ((err == -ERESTARTSYS) && (c->status == Connected)) {
636 P9_DPRINTK(P9_DEBUG_MUX, "flushing\n");
638 clear_thread_flag(TIF_SIGPENDING);
640 if (c->trans_mod->cancel(c, req))
641 p9_client_flush(c, req);
643 /* if we received the response anyway, don't signal error */
644 if (req->status == REQ_STATUS_RCVD)
649 spin_lock_irqsave(¤t->sighand->siglock, flags);
651 spin_unlock_irqrestore(¤t->sighand->siglock, flags);
657 err = p9_check_errors(c, req);
659 P9_DPRINTK(P9_DEBUG_MUX, "exit: client %p op %d\n", c, type);
664 P9_DPRINTK(P9_DEBUG_MUX, "exit: client %p op %d error: %d\n", c, type,
670 static struct p9_fid *p9_fid_create(struct p9_client *clnt)
676 P9_DPRINTK(P9_DEBUG_FID, "clnt %p\n", clnt);
677 fid = kmalloc(sizeof(struct p9_fid), GFP_KERNEL);
679 return ERR_PTR(-ENOMEM);
681 ret = p9_idpool_get(clnt->fidpool);
688 memset(&fid->qid, 0, sizeof(struct p9_qid));
690 fid->uid = current_fsuid();
693 spin_lock_irqsave(&clnt->lock, flags);
694 list_add(&fid->flist, &clnt->fidlist);
695 spin_unlock_irqrestore(&clnt->lock, flags);
704 static void p9_fid_destroy(struct p9_fid *fid)
706 struct p9_client *clnt;
709 P9_DPRINTK(P9_DEBUG_FID, "fid %d\n", fid->fid);
711 p9_idpool_put(fid->fid, clnt->fidpool);
712 spin_lock_irqsave(&clnt->lock, flags);
713 list_del(&fid->flist);
714 spin_unlock_irqrestore(&clnt->lock, flags);
719 static int p9_client_version(struct p9_client *c)
722 struct p9_req_t *req;
726 P9_DPRINTK(P9_DEBUG_9P, ">>> TVERSION msize %d protocol %d\n",
727 c->msize, c->proto_version);
729 switch (c->proto_version) {
731 req = p9_client_rpc(c, P9_TVERSION, "ds",
732 c->msize, "9P2000.L");
735 req = p9_client_rpc(c, P9_TVERSION, "ds",
736 c->msize, "9P2000.u");
738 case p9_proto_legacy:
739 req = p9_client_rpc(c, P9_TVERSION, "ds",
750 err = p9pdu_readf(req->rc, c->proto_version, "ds", &msize, &version);
752 P9_DPRINTK(P9_DEBUG_9P, "version error %d\n", err);
753 p9pdu_dump(1, req->rc);
757 P9_DPRINTK(P9_DEBUG_9P, "<<< RVERSION msize %d %s\n", msize, version);
758 if (!strncmp(version, "9P2000.L", 8))
759 c->proto_version = p9_proto_2000L;
760 else if (!strncmp(version, "9P2000.u", 8))
761 c->proto_version = p9_proto_2000u;
762 else if (!strncmp(version, "9P2000", 6))
763 c->proto_version = p9_proto_legacy;
769 if (msize < c->msize)
779 struct p9_client *p9_client_create(const char *dev_name, char *options)
782 struct p9_client *clnt;
785 clnt = kmalloc(sizeof(struct p9_client), GFP_KERNEL);
787 return ERR_PTR(-ENOMEM);
789 clnt->trans_mod = NULL;
791 spin_lock_init(&clnt->lock);
792 INIT_LIST_HEAD(&clnt->fidlist);
794 err = p9_tag_init(clnt);
798 err = parse_opts(options, clnt);
800 goto destroy_tagpool;
802 if (!clnt->trans_mod)
803 clnt->trans_mod = v9fs_get_default_trans();
805 if (clnt->trans_mod == NULL) {
806 err = -EPROTONOSUPPORT;
807 P9_DPRINTK(P9_DEBUG_ERROR,
808 "No transport defined or default transport\n");
809 goto destroy_tagpool;
812 clnt->fidpool = p9_idpool_create();
813 if (IS_ERR(clnt->fidpool)) {
814 err = PTR_ERR(clnt->fidpool);
818 P9_DPRINTK(P9_DEBUG_MUX, "clnt %p trans %p msize %d protocol %d\n",
819 clnt, clnt->trans_mod, clnt->msize, clnt->proto_version);
821 err = clnt->trans_mod->create(clnt, dev_name, options);
823 goto destroy_fidpool;
825 if ((clnt->msize+P9_IOHDRSZ) > clnt->trans_mod->maxsize)
826 clnt->msize = clnt->trans_mod->maxsize-P9_IOHDRSZ;
828 err = p9_client_version(clnt);
835 clnt->trans_mod->close(clnt);
837 p9_idpool_destroy(clnt->fidpool);
839 v9fs_put_trans(clnt->trans_mod);
841 p9_idpool_destroy(clnt->tagpool);
846 EXPORT_SYMBOL(p9_client_create);
848 void p9_client_destroy(struct p9_client *clnt)
850 struct p9_fid *fid, *fidptr;
852 P9_DPRINTK(P9_DEBUG_MUX, "clnt %p\n", clnt);
855 clnt->trans_mod->close(clnt);
857 v9fs_put_trans(clnt->trans_mod);
859 list_for_each_entry_safe(fid, fidptr, &clnt->fidlist, flist) {
860 printk(KERN_INFO "Found fid %d not clunked\n", fid->fid);
865 p9_idpool_destroy(clnt->fidpool);
867 p9_tag_cleanup(clnt);
871 EXPORT_SYMBOL(p9_client_destroy);
873 void p9_client_disconnect(struct p9_client *clnt)
875 P9_DPRINTK(P9_DEBUG_9P, "clnt %p\n", clnt);
876 clnt->status = Disconnected;
878 EXPORT_SYMBOL(p9_client_disconnect);
880 void p9_client_begin_disconnect(struct p9_client *clnt)
882 P9_DPRINTK(P9_DEBUG_9P, "clnt %p\n", clnt);
883 clnt->status = BeginDisconnect;
885 EXPORT_SYMBOL(p9_client_begin_disconnect);
887 struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,
888 char *uname, u32 n_uname, char *aname)
891 struct p9_req_t *req;
895 P9_DPRINTK(P9_DEBUG_9P, ">>> TATTACH afid %d uname %s aname %s\n",
896 afid ? afid->fid : -1, uname, aname);
899 fid = p9_fid_create(clnt);
906 req = p9_client_rpc(clnt, P9_TATTACH, "ddss?d", fid->fid,
907 afid ? afid->fid : P9_NOFID, uname, aname, n_uname);
913 err = p9pdu_readf(req->rc, clnt->proto_version, "Q", &qid);
915 p9pdu_dump(1, req->rc);
916 p9_free_req(clnt, req);
920 P9_DPRINTK(P9_DEBUG_9P, "<<< RATTACH qid %x.%llx.%x\n",
922 (unsigned long long)qid.path,
925 memmove(&fid->qid, &qid, sizeof(struct p9_qid));
927 p9_free_req(clnt, req);
935 EXPORT_SYMBOL(p9_client_attach);
937 struct p9_fid *p9_client_walk(struct p9_fid *oldfid, uint16_t nwname,
938 char **wnames, int clone)
941 struct p9_client *clnt;
943 struct p9_qid *wqids;
944 struct p9_req_t *req;
945 uint16_t nwqids, count;
951 fid = p9_fid_create(clnt);
958 fid->uid = oldfid->uid;
963 P9_DPRINTK(P9_DEBUG_9P, ">>> TWALK fids %d,%d nwname %ud wname[0] %s\n",
964 oldfid->fid, fid->fid, nwname, wnames ? wnames[0] : NULL);
966 req = p9_client_rpc(clnt, P9_TWALK, "ddT", oldfid->fid, fid->fid,
973 err = p9pdu_readf(req->rc, clnt->proto_version, "R", &nwqids, &wqids);
975 p9pdu_dump(1, req->rc);
976 p9_free_req(clnt, req);
979 p9_free_req(clnt, req);
981 P9_DPRINTK(P9_DEBUG_9P, "<<< RWALK nwqid %d:\n", nwqids);
983 if (nwqids != nwname) {
988 for (count = 0; count < nwqids; count++)
989 P9_DPRINTK(P9_DEBUG_9P, "<<< [%d] %x.%llx.%x\n",
990 count, wqids[count].type,
991 (unsigned long long)wqids[count].path,
992 wqids[count].version);
995 memmove(&fid->qid, &wqids[nwqids - 1], sizeof(struct p9_qid));
997 fid->qid = oldfid->qid;
1004 p9_client_clunk(fid);
1008 if (fid && (fid != oldfid))
1009 p9_fid_destroy(fid);
1011 return ERR_PTR(err);
1013 EXPORT_SYMBOL(p9_client_walk);
1015 int p9_client_open(struct p9_fid *fid, int mode)
1018 struct p9_client *clnt;
1019 struct p9_req_t *req;
1024 P9_DPRINTK(P9_DEBUG_9P, ">>> %s fid %d mode %d\n",
1025 p9_is_proto_dotl(clnt) ? "TLOPEN" : "TOPEN", fid->fid, mode);
1028 if (fid->mode != -1)
1031 if (p9_is_proto_dotl(clnt))
1032 req = p9_client_rpc(clnt, P9_TLOPEN, "dd", fid->fid, mode);
1034 req = p9_client_rpc(clnt, P9_TOPEN, "db", fid->fid, mode);
1040 err = p9pdu_readf(req->rc, clnt->proto_version, "Qd", &qid, &iounit);
1042 p9pdu_dump(1, req->rc);
1043 goto free_and_error;
1046 P9_DPRINTK(P9_DEBUG_9P, "<<< %s qid %x.%llx.%x iounit %x\n",
1047 p9_is_proto_dotl(clnt) ? "RLOPEN" : "ROPEN", qid.type,
1048 (unsigned long long)qid.path, qid.version, iounit);
1051 fid->iounit = iounit;
1054 p9_free_req(clnt, req);
1058 EXPORT_SYMBOL(p9_client_open);
1060 int p9_client_create_dotl(struct p9_fid *ofid, char *name, u32 flags, u32 mode,
1061 gid_t gid, struct p9_qid *qid)
1064 struct p9_client *clnt;
1065 struct p9_req_t *req;
1068 P9_DPRINTK(P9_DEBUG_9P,
1069 ">>> TLCREATE fid %d name %s flags %d mode %d gid %d\n",
1070 ofid->fid, name, flags, mode, gid);
1073 if (ofid->mode != -1)
1076 req = p9_client_rpc(clnt, P9_TLCREATE, "dsddd", ofid->fid, name, flags,
1083 err = p9pdu_readf(req->rc, clnt->proto_version, "Qd", qid, &iounit);
1085 p9pdu_dump(1, req->rc);
1086 goto free_and_error;
1089 P9_DPRINTK(P9_DEBUG_9P, "<<< RLCREATE qid %x.%llx.%x iounit %x\n",
1091 (unsigned long long)qid->path,
1092 qid->version, iounit);
1095 ofid->iounit = iounit;
1098 p9_free_req(clnt, req);
1102 EXPORT_SYMBOL(p9_client_create_dotl);
1104 int p9_client_fcreate(struct p9_fid *fid, char *name, u32 perm, int mode,
1108 struct p9_client *clnt;
1109 struct p9_req_t *req;
1113 P9_DPRINTK(P9_DEBUG_9P, ">>> TCREATE fid %d name %s perm %d mode %d\n",
1114 fid->fid, name, perm, mode);
1118 if (fid->mode != -1)
1121 req = p9_client_rpc(clnt, P9_TCREATE, "dsdb?s", fid->fid, name, perm,
1128 err = p9pdu_readf(req->rc, clnt->proto_version, "Qd", &qid, &iounit);
1130 p9pdu_dump(1, req->rc);
1131 goto free_and_error;
1134 P9_DPRINTK(P9_DEBUG_9P, "<<< RCREATE qid %x.%llx.%x iounit %x\n",
1136 (unsigned long long)qid.path,
1137 qid.version, iounit);
1140 fid->iounit = iounit;
1143 p9_free_req(clnt, req);
1147 EXPORT_SYMBOL(p9_client_fcreate);
1149 int p9_client_symlink(struct p9_fid *dfid, char *name, char *symtgt, gid_t gid,
1153 struct p9_client *clnt;
1154 struct p9_req_t *req;
1156 P9_DPRINTK(P9_DEBUG_9P, ">>> TSYMLINK dfid %d name %s symtgt %s\n",
1157 dfid->fid, name, symtgt);
1160 req = p9_client_rpc(clnt, P9_TSYMLINK, "dssd", dfid->fid, name, symtgt,
1167 err = p9pdu_readf(req->rc, clnt->proto_version, "Q", qid);
1169 p9pdu_dump(1, req->rc);
1170 goto free_and_error;
1173 P9_DPRINTK(P9_DEBUG_9P, "<<< RSYMLINK qid %x.%llx.%x\n",
1174 qid->type, (unsigned long long)qid->path, qid->version);
1177 p9_free_req(clnt, req);
1181 EXPORT_SYMBOL(p9_client_symlink);
1183 int p9_client_link(struct p9_fid *dfid, struct p9_fid *oldfid, char *newname)
1185 struct p9_client *clnt;
1186 struct p9_req_t *req;
1188 P9_DPRINTK(P9_DEBUG_9P, ">>> TLINK dfid %d oldfid %d newname %s\n",
1189 dfid->fid, oldfid->fid, newname);
1191 req = p9_client_rpc(clnt, P9_TLINK, "dds", dfid->fid, oldfid->fid,
1194 return PTR_ERR(req);
1196 P9_DPRINTK(P9_DEBUG_9P, "<<< RLINK\n");
1197 p9_free_req(clnt, req);
1200 EXPORT_SYMBOL(p9_client_link);
1202 int p9_client_fsync(struct p9_fid *fid, int datasync)
1205 struct p9_client *clnt;
1206 struct p9_req_t *req;
1208 P9_DPRINTK(P9_DEBUG_9P, ">>> TFSYNC fid %d datasync:%d\n",
1209 fid->fid, datasync);
1213 req = p9_client_rpc(clnt, P9_TFSYNC, "dd", fid->fid, datasync);
1219 P9_DPRINTK(P9_DEBUG_9P, "<<< RFSYNC fid %d\n", fid->fid);
1221 p9_free_req(clnt, req);
1226 EXPORT_SYMBOL(p9_client_fsync);
1228 int p9_client_clunk(struct p9_fid *fid)
1231 struct p9_client *clnt;
1232 struct p9_req_t *req;
1235 P9_EPRINTK(KERN_WARNING, "Trying to clunk with NULL fid\n");
1240 P9_DPRINTK(P9_DEBUG_9P, ">>> TCLUNK fid %d\n", fid->fid);
1244 req = p9_client_rpc(clnt, P9_TCLUNK, "d", fid->fid);
1250 P9_DPRINTK(P9_DEBUG_9P, "<<< RCLUNK fid %d\n", fid->fid);
1252 p9_free_req(clnt, req);
1253 p9_fid_destroy(fid);
1258 EXPORT_SYMBOL(p9_client_clunk);
1260 int p9_client_remove(struct p9_fid *fid)
1263 struct p9_client *clnt;
1264 struct p9_req_t *req;
1266 P9_DPRINTK(P9_DEBUG_9P, ">>> TREMOVE fid %d\n", fid->fid);
1270 req = p9_client_rpc(clnt, P9_TREMOVE, "d", fid->fid);
1276 P9_DPRINTK(P9_DEBUG_9P, "<<< RREMOVE fid %d\n", fid->fid);
1278 p9_free_req(clnt, req);
1280 p9_fid_destroy(fid);
1283 EXPORT_SYMBOL(p9_client_remove);
1286 p9_client_read(struct p9_fid *fid, char *data, char __user *udata, u64 offset,
1290 struct p9_client *clnt;
1291 struct p9_req_t *req;
1294 P9_DPRINTK(P9_DEBUG_9P, ">>> TREAD fid %d offset %llu %d\n", fid->fid,
1295 (long long unsigned) offset, count);
1299 rsize = fid->iounit;
1300 if (!rsize || rsize > clnt->msize-P9_IOHDRSZ)
1301 rsize = clnt->msize - P9_IOHDRSZ;
1306 /* Don't bother zerocopy for small IO (< 1024) */
1307 if (((clnt->trans_mod->pref & P9_TRANS_PREF_PAYLOAD_MASK) ==
1308 P9_TRANS_PREF_PAYLOAD_SEP) && (rsize > 1024)) {
1309 req = p9_client_rpc(clnt, P9_TREAD, "dqE", fid->fid, offset,
1310 rsize, data, udata);
1312 req = p9_client_rpc(clnt, P9_TREAD, "dqd", fid->fid, offset,
1320 err = p9pdu_readf(req->rc, clnt->proto_version, "D", &count, &dataptr);
1322 p9pdu_dump(1, req->rc);
1323 goto free_and_error;
1326 P9_DPRINTK(P9_DEBUG_9P, "<<< RREAD count %d\n", count);
1328 if (!req->tc->pbuf_size) {
1330 memmove(data, dataptr, count);
1332 err = copy_to_user(udata, dataptr, count);
1335 goto free_and_error;
1339 p9_free_req(clnt, req);
1343 p9_free_req(clnt, req);
1347 EXPORT_SYMBOL(p9_client_read);
1350 p9_client_write(struct p9_fid *fid, char *data, const char __user *udata,
1351 u64 offset, u32 count)
1354 struct p9_client *clnt;
1355 struct p9_req_t *req;
1357 P9_DPRINTK(P9_DEBUG_9P, ">>> TWRITE fid %d offset %llu count %d\n",
1358 fid->fid, (long long unsigned) offset, count);
1362 rsize = fid->iounit;
1363 if (!rsize || rsize > clnt->msize-P9_IOHDRSZ)
1364 rsize = clnt->msize - P9_IOHDRSZ;
1369 /* Don't bother zerocopy form small IO (< 1024) */
1370 if (((clnt->trans_mod->pref & P9_TRANS_PREF_PAYLOAD_MASK) ==
1371 P9_TRANS_PREF_PAYLOAD_SEP) && (rsize > 1024)) {
1372 req = p9_client_rpc(clnt, P9_TWRITE, "dqE", fid->fid, offset,
1373 rsize, data, udata);
1377 req = p9_client_rpc(clnt, P9_TWRITE, "dqD", fid->fid,
1378 offset, rsize, data);
1380 req = p9_client_rpc(clnt, P9_TWRITE, "dqU", fid->fid,
1381 offset, rsize, udata);
1388 err = p9pdu_readf(req->rc, clnt->proto_version, "d", &count);
1390 p9pdu_dump(1, req->rc);
1391 goto free_and_error;
1394 P9_DPRINTK(P9_DEBUG_9P, "<<< RWRITE count %d\n", count);
1396 p9_free_req(clnt, req);
1400 p9_free_req(clnt, req);
1404 EXPORT_SYMBOL(p9_client_write);
1406 struct p9_wstat *p9_client_stat(struct p9_fid *fid)
1409 struct p9_client *clnt;
1410 struct p9_wstat *ret = kmalloc(sizeof(struct p9_wstat), GFP_KERNEL);
1411 struct p9_req_t *req;
1414 P9_DPRINTK(P9_DEBUG_9P, ">>> TSTAT fid %d\n", fid->fid);
1417 return ERR_PTR(-ENOMEM);
1422 req = p9_client_rpc(clnt, P9_TSTAT, "d", fid->fid);
1428 err = p9pdu_readf(req->rc, clnt->proto_version, "wS", &ignored, ret);
1430 p9pdu_dump(1, req->rc);
1431 p9_free_req(clnt, req);
1435 P9_DPRINTK(P9_DEBUG_9P,
1436 "<<< RSTAT sz=%x type=%x dev=%x qid=%x.%llx.%x\n"
1437 "<<< mode=%8.8x atime=%8.8x mtime=%8.8x length=%llx\n"
1438 "<<< name=%s uid=%s gid=%s muid=%s extension=(%s)\n"
1439 "<<< uid=%d gid=%d n_muid=%d\n",
1440 ret->size, ret->type, ret->dev, ret->qid.type,
1441 (unsigned long long)ret->qid.path, ret->qid.version, ret->mode,
1442 ret->atime, ret->mtime, (unsigned long long)ret->length,
1443 ret->name, ret->uid, ret->gid, ret->muid, ret->extension,
1444 ret->n_uid, ret->n_gid, ret->n_muid);
1446 p9_free_req(clnt, req);
1451 return ERR_PTR(err);
1453 EXPORT_SYMBOL(p9_client_stat);
1455 struct p9_stat_dotl *p9_client_getattr_dotl(struct p9_fid *fid,
1459 struct p9_client *clnt;
1460 struct p9_stat_dotl *ret = kmalloc(sizeof(struct p9_stat_dotl),
1462 struct p9_req_t *req;
1464 P9_DPRINTK(P9_DEBUG_9P, ">>> TGETATTR fid %d, request_mask %lld\n",
1465 fid->fid, request_mask);
1468 return ERR_PTR(-ENOMEM);
1473 req = p9_client_rpc(clnt, P9_TGETATTR, "dq", fid->fid, request_mask);
1479 err = p9pdu_readf(req->rc, clnt->proto_version, "A", ret);
1481 p9pdu_dump(1, req->rc);
1482 p9_free_req(clnt, req);
1486 P9_DPRINTK(P9_DEBUG_9P,
1487 "<<< RGETATTR st_result_mask=%lld\n"
1488 "<<< qid=%x.%llx.%x\n"
1489 "<<< st_mode=%8.8x st_nlink=%llu\n"
1490 "<<< st_uid=%d st_gid=%d\n"
1491 "<<< st_rdev=%llx st_size=%llx st_blksize=%llu st_blocks=%llu\n"
1492 "<<< st_atime_sec=%lld st_atime_nsec=%lld\n"
1493 "<<< st_mtime_sec=%lld st_mtime_nsec=%lld\n"
1494 "<<< st_ctime_sec=%lld st_ctime_nsec=%lld\n"
1495 "<<< st_btime_sec=%lld st_btime_nsec=%lld\n"
1496 "<<< st_gen=%lld st_data_version=%lld",
1497 ret->st_result_mask, ret->qid.type, ret->qid.path,
1498 ret->qid.version, ret->st_mode, ret->st_nlink, ret->st_uid,
1499 ret->st_gid, ret->st_rdev, ret->st_size, ret->st_blksize,
1500 ret->st_blocks, ret->st_atime_sec, ret->st_atime_nsec,
1501 ret->st_mtime_sec, ret->st_mtime_nsec, ret->st_ctime_sec,
1502 ret->st_ctime_nsec, ret->st_btime_sec, ret->st_btime_nsec,
1503 ret->st_gen, ret->st_data_version);
1505 p9_free_req(clnt, req);
1510 return ERR_PTR(err);
1512 EXPORT_SYMBOL(p9_client_getattr_dotl);
1514 static int p9_client_statsize(struct p9_wstat *wst, int proto_version)
1518 /* NOTE: size shouldn't include its own length */
1519 /* size[2] type[2] dev[4] qid[13] */
1520 /* mode[4] atime[4] mtime[4] length[8]*/
1521 /* name[s] uid[s] gid[s] muid[s] */
1522 ret = 2+4+13+4+4+4+8+2+2+2+2;
1525 ret += strlen(wst->name);
1527 ret += strlen(wst->uid);
1529 ret += strlen(wst->gid);
1531 ret += strlen(wst->muid);
1533 if ((proto_version == p9_proto_2000u) ||
1534 (proto_version == p9_proto_2000L)) {
1535 ret += 2+4+4+4; /* extension[s] n_uid[4] n_gid[4] n_muid[4] */
1537 ret += strlen(wst->extension);
1543 int p9_client_wstat(struct p9_fid *fid, struct p9_wstat *wst)
1546 struct p9_req_t *req;
1547 struct p9_client *clnt;
1551 wst->size = p9_client_statsize(wst, clnt->proto_version);
1552 P9_DPRINTK(P9_DEBUG_9P, ">>> TWSTAT fid %d\n", fid->fid);
1553 P9_DPRINTK(P9_DEBUG_9P,
1554 " sz=%x type=%x dev=%x qid=%x.%llx.%x\n"
1555 " mode=%8.8x atime=%8.8x mtime=%8.8x length=%llx\n"
1556 " name=%s uid=%s gid=%s muid=%s extension=(%s)\n"
1557 " uid=%d gid=%d n_muid=%d\n",
1558 wst->size, wst->type, wst->dev, wst->qid.type,
1559 (unsigned long long)wst->qid.path, wst->qid.version, wst->mode,
1560 wst->atime, wst->mtime, (unsigned long long)wst->length,
1561 wst->name, wst->uid, wst->gid, wst->muid, wst->extension,
1562 wst->n_uid, wst->n_gid, wst->n_muid);
1564 req = p9_client_rpc(clnt, P9_TWSTAT, "dwS", fid->fid, wst->size+2, wst);
1570 P9_DPRINTK(P9_DEBUG_9P, "<<< RWSTAT fid %d\n", fid->fid);
1572 p9_free_req(clnt, req);
1576 EXPORT_SYMBOL(p9_client_wstat);
1578 int p9_client_setattr(struct p9_fid *fid, struct p9_iattr_dotl *p9attr)
1581 struct p9_req_t *req;
1582 struct p9_client *clnt;
1586 P9_DPRINTK(P9_DEBUG_9P, ">>> TSETATTR fid %d\n", fid->fid);
1587 P9_DPRINTK(P9_DEBUG_9P,
1588 " valid=%x mode=%x uid=%d gid=%d size=%lld\n"
1589 " atime_sec=%lld atime_nsec=%lld\n"
1590 " mtime_sec=%lld mtime_nsec=%lld\n",
1591 p9attr->valid, p9attr->mode, p9attr->uid, p9attr->gid,
1592 p9attr->size, p9attr->atime_sec, p9attr->atime_nsec,
1593 p9attr->mtime_sec, p9attr->mtime_nsec);
1595 req = p9_client_rpc(clnt, P9_TSETATTR, "dI", fid->fid, p9attr);
1601 P9_DPRINTK(P9_DEBUG_9P, "<<< RSETATTR fid %d\n", fid->fid);
1602 p9_free_req(clnt, req);
1606 EXPORT_SYMBOL(p9_client_setattr);
1608 int p9_client_statfs(struct p9_fid *fid, struct p9_rstatfs *sb)
1611 struct p9_req_t *req;
1612 struct p9_client *clnt;
1617 P9_DPRINTK(P9_DEBUG_9P, ">>> TSTATFS fid %d\n", fid->fid);
1619 req = p9_client_rpc(clnt, P9_TSTATFS, "d", fid->fid);
1625 err = p9pdu_readf(req->rc, clnt->proto_version, "ddqqqqqqd", &sb->type,
1626 &sb->bsize, &sb->blocks, &sb->bfree, &sb->bavail,
1627 &sb->files, &sb->ffree, &sb->fsid, &sb->namelen);
1629 p9pdu_dump(1, req->rc);
1630 p9_free_req(clnt, req);
1634 P9_DPRINTK(P9_DEBUG_9P, "<<< RSTATFS fid %d type 0x%lx bsize %ld "
1635 "blocks %llu bfree %llu bavail %llu files %llu ffree %llu "
1636 "fsid %llu namelen %ld\n",
1637 fid->fid, (long unsigned int)sb->type, (long int)sb->bsize,
1638 sb->blocks, sb->bfree, sb->bavail, sb->files, sb->ffree,
1639 sb->fsid, (long int)sb->namelen);
1641 p9_free_req(clnt, req);
1645 EXPORT_SYMBOL(p9_client_statfs);
1647 int p9_client_rename(struct p9_fid *fid, struct p9_fid *newdirfid, char *name)
1650 struct p9_req_t *req;
1651 struct p9_client *clnt;
1656 P9_DPRINTK(P9_DEBUG_9P, ">>> TRENAME fid %d newdirfid %d name %s\n",
1657 fid->fid, newdirfid->fid, name);
1659 req = p9_client_rpc(clnt, P9_TRENAME, "dds", fid->fid,
1660 newdirfid->fid, name);
1666 P9_DPRINTK(P9_DEBUG_9P, "<<< RRENAME fid %d\n", fid->fid);
1668 p9_free_req(clnt, req);
1672 EXPORT_SYMBOL(p9_client_rename);
1675 * An xattrwalk without @attr_name gives the fid for the lisxattr namespace
1677 struct p9_fid *p9_client_xattrwalk(struct p9_fid *file_fid,
1678 const char *attr_name, u64 *attr_size)
1681 struct p9_req_t *req;
1682 struct p9_client *clnt;
1683 struct p9_fid *attr_fid;
1686 clnt = file_fid->clnt;
1687 attr_fid = p9_fid_create(clnt);
1688 if (IS_ERR(attr_fid)) {
1689 err = PTR_ERR(attr_fid);
1693 P9_DPRINTK(P9_DEBUG_9P,
1694 ">>> TXATTRWALK file_fid %d, attr_fid %d name %s\n",
1695 file_fid->fid, attr_fid->fid, attr_name);
1697 req = p9_client_rpc(clnt, P9_TXATTRWALK, "dds",
1698 file_fid->fid, attr_fid->fid, attr_name);
1703 err = p9pdu_readf(req->rc, clnt->proto_version, "q", attr_size);
1705 p9pdu_dump(1, req->rc);
1706 p9_free_req(clnt, req);
1709 p9_free_req(clnt, req);
1710 P9_DPRINTK(P9_DEBUG_9P, "<<< RXATTRWALK fid %d size %llu\n",
1711 attr_fid->fid, *attr_size);
1714 p9_client_clunk(attr_fid);
1717 if (attr_fid && (attr_fid != file_fid))
1718 p9_fid_destroy(attr_fid);
1720 return ERR_PTR(err);
1722 EXPORT_SYMBOL_GPL(p9_client_xattrwalk);
1724 int p9_client_xattrcreate(struct p9_fid *fid, const char *name,
1725 u64 attr_size, int flags)
1728 struct p9_req_t *req;
1729 struct p9_client *clnt;
1731 P9_DPRINTK(P9_DEBUG_9P,
1732 ">>> TXATTRCREATE fid %d name %s size %lld flag %d\n",
1733 fid->fid, name, (long long)attr_size, flags);
1736 req = p9_client_rpc(clnt, P9_TXATTRCREATE, "dsqd",
1737 fid->fid, name, attr_size, flags);
1742 P9_DPRINTK(P9_DEBUG_9P, "<<< RXATTRCREATE fid %d\n", fid->fid);
1743 p9_free_req(clnt, req);
1747 EXPORT_SYMBOL_GPL(p9_client_xattrcreate);
1749 int p9_client_readdir(struct p9_fid *fid, char *data, u32 count, u64 offset)
1752 struct p9_client *clnt;
1753 struct p9_req_t *req;
1756 P9_DPRINTK(P9_DEBUG_9P, ">>> TREADDIR fid %d offset %llu count %d\n",
1757 fid->fid, (long long unsigned) offset, count);
1762 rsize = fid->iounit;
1763 if (!rsize || rsize > clnt->msize-P9_READDIRHDRSZ)
1764 rsize = clnt->msize - P9_READDIRHDRSZ;
1769 if ((clnt->trans_mod->pref & P9_TRANS_PREF_PAYLOAD_MASK) ==
1770 P9_TRANS_PREF_PAYLOAD_SEP) {
1771 req = p9_client_rpc(clnt, P9_TREADDIR, "dqF", fid->fid,
1772 offset, rsize, data);
1774 req = p9_client_rpc(clnt, P9_TREADDIR, "dqd", fid->fid,
1782 err = p9pdu_readf(req->rc, clnt->proto_version, "D", &count, &dataptr);
1784 p9pdu_dump(1, req->rc);
1785 goto free_and_error;
1788 P9_DPRINTK(P9_DEBUG_9P, "<<< RREADDIR count %d\n", count);
1790 if (!req->tc->pbuf_size && data)
1791 memmove(data, dataptr, count);
1793 p9_free_req(clnt, req);
1797 p9_free_req(clnt, req);
1801 EXPORT_SYMBOL(p9_client_readdir);
1803 int p9_client_mknod_dotl(struct p9_fid *fid, char *name, int mode,
1804 dev_t rdev, gid_t gid, struct p9_qid *qid)
1807 struct p9_client *clnt;
1808 struct p9_req_t *req;
1812 P9_DPRINTK(P9_DEBUG_9P, ">>> TMKNOD fid %d name %s mode %d major %d "
1813 "minor %d\n", fid->fid, name, mode, MAJOR(rdev), MINOR(rdev));
1814 req = p9_client_rpc(clnt, P9_TMKNOD, "dsdddd", fid->fid, name, mode,
1815 MAJOR(rdev), MINOR(rdev), gid);
1817 return PTR_ERR(req);
1819 err = p9pdu_readf(req->rc, clnt->proto_version, "Q", qid);
1821 p9pdu_dump(1, req->rc);
1824 P9_DPRINTK(P9_DEBUG_9P, "<<< RMKNOD qid %x.%llx.%x\n", qid->type,
1825 (unsigned long long)qid->path, qid->version);
1828 p9_free_req(clnt, req);
1832 EXPORT_SYMBOL(p9_client_mknod_dotl);
1834 int p9_client_mkdir_dotl(struct p9_fid *fid, char *name, int mode,
1835 gid_t gid, struct p9_qid *qid)
1838 struct p9_client *clnt;
1839 struct p9_req_t *req;
1843 P9_DPRINTK(P9_DEBUG_9P, ">>> TMKDIR fid %d name %s mode %d gid %d\n",
1844 fid->fid, name, mode, gid);
1845 req = p9_client_rpc(clnt, P9_TMKDIR, "dsdd", fid->fid, name, mode,
1848 return PTR_ERR(req);
1850 err = p9pdu_readf(req->rc, clnt->proto_version, "Q", qid);
1852 p9pdu_dump(1, req->rc);
1855 P9_DPRINTK(P9_DEBUG_9P, "<<< RMKDIR qid %x.%llx.%x\n", qid->type,
1856 (unsigned long long)qid->path, qid->version);
1859 p9_free_req(clnt, req);
1863 EXPORT_SYMBOL(p9_client_mkdir_dotl);
1865 int p9_client_lock_dotl(struct p9_fid *fid, struct p9_flock *flock, u8 *status)
1868 struct p9_client *clnt;
1869 struct p9_req_t *req;
1873 P9_DPRINTK(P9_DEBUG_9P, ">>> TLOCK fid %d type %i flags %d "
1874 "start %lld length %lld proc_id %d client_id %s\n",
1875 fid->fid, flock->type, flock->flags, flock->start,
1876 flock->length, flock->proc_id, flock->client_id);
1878 req = p9_client_rpc(clnt, P9_TLOCK, "dbdqqds", fid->fid, flock->type,
1879 flock->flags, flock->start, flock->length,
1880 flock->proc_id, flock->client_id);
1883 return PTR_ERR(req);
1885 err = p9pdu_readf(req->rc, clnt->proto_version, "b", status);
1887 p9pdu_dump(1, req->rc);
1890 P9_DPRINTK(P9_DEBUG_9P, "<<< RLOCK status %i\n", *status);
1892 p9_free_req(clnt, req);
1896 EXPORT_SYMBOL(p9_client_lock_dotl);
1898 int p9_client_getlock_dotl(struct p9_fid *fid, struct p9_getlock *glock)
1901 struct p9_client *clnt;
1902 struct p9_req_t *req;
1906 P9_DPRINTK(P9_DEBUG_9P, ">>> TGETLOCK fid %d, type %i start %lld "
1907 "length %lld proc_id %d client_id %s\n", fid->fid, glock->type,
1908 glock->start, glock->length, glock->proc_id, glock->client_id);
1910 req = p9_client_rpc(clnt, P9_TGETLOCK, "dbqqds", fid->fid, glock->type,
1911 glock->start, glock->length, glock->proc_id, glock->client_id);
1914 return PTR_ERR(req);
1916 err = p9pdu_readf(req->rc, clnt->proto_version, "bqqds", &glock->type,
1917 &glock->start, &glock->length, &glock->proc_id,
1920 p9pdu_dump(1, req->rc);
1923 P9_DPRINTK(P9_DEBUG_9P, "<<< RGETLOCK type %i start %lld length %lld "
1924 "proc_id %d client_id %s\n", glock->type, glock->start,
1925 glock->length, glock->proc_id, glock->client_id);
1927 p9_free_req(clnt, req);
1930 EXPORT_SYMBOL(p9_client_getlock_dotl);
1932 int p9_client_readlink(struct p9_fid *fid, char **target)
1935 struct p9_client *clnt;
1936 struct p9_req_t *req;
1940 P9_DPRINTK(P9_DEBUG_9P, ">>> TREADLINK fid %d\n", fid->fid);
1942 req = p9_client_rpc(clnt, P9_TREADLINK, "d", fid->fid);
1944 return PTR_ERR(req);
1946 err = p9pdu_readf(req->rc, clnt->proto_version, "s", target);
1948 p9pdu_dump(1, req->rc);
1951 P9_DPRINTK(P9_DEBUG_9P, "<<< RREADLINK target %s\n", *target);
1953 p9_free_req(clnt, req);
1956 EXPORT_SYMBOL(p9_client_readlink);