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(char *s)
77 int version = -EINVAL;
79 if (!strcmp(s, "9p2000")) {
80 version = p9_proto_legacy;
81 P9_DPRINTK(P9_DEBUG_9P, "Protocol version: Legacy\n");
82 } else if (!strcmp(s, "9p2000.u")) {
83 version = p9_proto_2000u;
84 P9_DPRINTK(P9_DEBUG_9P, "Protocol version: 9P2000.u\n");
85 } else if (!strcmp(s, "9p2000.L")) {
86 version = p9_proto_2000L;
87 P9_DPRINTK(P9_DEBUG_9P, "Protocol version: 9P2000.L\n");
89 printk(KERN_INFO "9p: Unknown protocol version %s.\n", s);
95 * parse_options - parse mount options into client structure
96 * @opts: options string passed from mount
97 * @clnt: existing v9fs client information
99 * Return 0 upon success, -ERRNO upon failure
102 static int parse_opts(char *opts, struct p9_client *clnt)
104 char *options, *tmp_options;
106 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 s = match_strdup(&args[0]);
147 P9_DPRINTK(P9_DEBUG_ERROR,
148 "problem allocating copy of trans arg\n");
149 goto free_and_return;
151 clnt->trans_mod = v9fs_get_trans_by_name(s);
152 if (clnt->trans_mod == NULL) {
154 "9p: Could not find "
155 "request transport: %s\n", s);
158 goto free_and_return;
163 clnt->proto_version = p9_proto_legacy;
166 s = match_strdup(&args[0]);
169 P9_DPRINTK(P9_DEBUG_ERROR,
170 "problem allocating copy of version arg\n");
171 goto free_and_return;
173 ret = get_protocol_version(s);
174 if (ret == -EINVAL) {
176 goto free_and_return;
179 clnt->proto_version = ret;
192 * p9_tag_alloc - lookup/allocate a request by tag
193 * @c: client session to lookup tag within
194 * @tag: numeric id for transaction
196 * this is a simple array lookup, but will grow the
197 * request_slots as necessary to accommodate transaction
198 * ids which did not previously have a slot.
200 * this code relies on the client spinlock to manage locks, its
201 * possible we should switch to something else, but I'd rather
202 * stick with something low-overhead for the common case.
206 static struct p9_req_t *p9_tag_alloc(struct p9_client *c, u16 tag)
210 struct p9_req_t *req;
212 /* This looks up the original request by tag so we know which
213 * buffer to read the data into */
216 if (tag >= c->max_tag) {
217 spin_lock_irqsave(&c->lock, flags);
218 /* check again since original check was outside of lock */
219 while (tag >= c->max_tag) {
220 row = (tag / P9_ROW_MAXTAG);
221 c->reqs[row] = kcalloc(P9_ROW_MAXTAG,
222 sizeof(struct p9_req_t), GFP_ATOMIC);
225 printk(KERN_ERR "Couldn't grow tag array\n");
226 spin_unlock_irqrestore(&c->lock, flags);
227 return ERR_PTR(-ENOMEM);
229 for (col = 0; col < P9_ROW_MAXTAG; col++) {
230 c->reqs[row][col].status = REQ_STATUS_IDLE;
231 c->reqs[row][col].tc = NULL;
233 c->max_tag += P9_ROW_MAXTAG;
235 spin_unlock_irqrestore(&c->lock, flags);
237 row = tag / P9_ROW_MAXTAG;
238 col = tag % P9_ROW_MAXTAG;
240 req = &c->reqs[row][col];
242 req->wq = kmalloc(sizeof(wait_queue_head_t), GFP_NOFS);
244 printk(KERN_ERR "Couldn't grow tag array\n");
245 return ERR_PTR(-ENOMEM);
247 init_waitqueue_head(req->wq);
248 if ((c->trans_mod->pref & P9_TRANS_PREF_PAYLOAD_MASK) ==
249 P9_TRANS_PREF_PAYLOAD_SEP) {
250 int alloc_msize = min(c->msize, 4096);
251 req->tc = kmalloc(sizeof(struct p9_fcall)+alloc_msize,
253 req->tc->capacity = alloc_msize;
254 req->rc = kmalloc(sizeof(struct p9_fcall)+alloc_msize,
256 req->rc->capacity = alloc_msize;
258 req->tc = kmalloc(sizeof(struct p9_fcall)+c->msize,
260 req->tc->capacity = c->msize;
261 req->rc = kmalloc(sizeof(struct p9_fcall)+c->msize,
263 req->rc->capacity = c->msize;
265 if ((!req->tc) || (!req->rc)) {
266 printk(KERN_ERR "Couldn't grow tag array\n");
270 req->tc = req->rc = NULL;
272 return ERR_PTR(-ENOMEM);
274 req->tc->sdata = (char *) req->tc + sizeof(struct p9_fcall);
275 req->rc->sdata = (char *) req->rc + sizeof(struct p9_fcall);
278 p9pdu_reset(req->tc);
279 p9pdu_reset(req->rc);
281 req->tc->tag = tag-1;
282 req->status = REQ_STATUS_ALLOC;
284 return &c->reqs[row][col];
288 * p9_tag_lookup - lookup a request by tag
289 * @c: client session to lookup tag within
290 * @tag: numeric id for transaction
294 struct p9_req_t *p9_tag_lookup(struct p9_client *c, u16 tag)
298 /* This looks up the original request by tag so we know which
299 * buffer to read the data into */
302 if(tag >= c->max_tag)
305 row = tag / P9_ROW_MAXTAG;
306 col = tag % P9_ROW_MAXTAG;
308 return &c->reqs[row][col];
310 EXPORT_SYMBOL(p9_tag_lookup);
313 * p9_tag_init - setup tags structure and contents
314 * @c: v9fs client struct
316 * This initializes the tags structure for each client instance.
320 static int p9_tag_init(struct p9_client *c)
324 c->tagpool = p9_idpool_create();
325 if (IS_ERR(c->tagpool)) {
326 err = PTR_ERR(c->tagpool);
329 err = p9_idpool_get(c->tagpool); /* reserve tag 0 */
331 p9_idpool_destroy(c->tagpool);
340 * p9_tag_cleanup - cleans up tags structure and reclaims resources
341 * @c: v9fs client struct
343 * This frees resources associated with the tags structure
346 static void p9_tag_cleanup(struct p9_client *c)
350 /* check to insure all requests are idle */
351 for (row = 0; row < (c->max_tag/P9_ROW_MAXTAG); row++) {
352 for (col = 0; col < P9_ROW_MAXTAG; col++) {
353 if (c->reqs[row][col].status != REQ_STATUS_IDLE) {
354 P9_DPRINTK(P9_DEBUG_MUX,
355 "Attempting to cleanup non-free tag %d,%d\n",
357 /* TODO: delay execution of cleanup */
364 p9_idpool_put(0, c->tagpool); /* free reserved tag 0 */
365 p9_idpool_destroy(c->tagpool);
368 /* free requests associated with tags */
369 for (row = 0; row < (c->max_tag/P9_ROW_MAXTAG); row++) {
370 for (col = 0; col < P9_ROW_MAXTAG; col++) {
371 kfree(c->reqs[row][col].wq);
372 kfree(c->reqs[row][col].tc);
373 kfree(c->reqs[row][col].rc);
381 * p9_free_req - free a request and clean-up as necessary
383 * r: request to release
387 static void p9_free_req(struct p9_client *c, struct p9_req_t *r)
389 int tag = r->tc->tag;
390 P9_DPRINTK(P9_DEBUG_MUX, "clnt %p req %p tag: %d\n", c, r, tag);
392 r->status = REQ_STATUS_IDLE;
393 if (tag != P9_NOTAG && p9_idpool_check(tag, c->tagpool))
394 p9_idpool_put(tag, c->tagpool);
398 * p9_client_cb - call back from transport to client
400 * req: request received
403 void p9_client_cb(struct p9_client *c, struct p9_req_t *req)
405 P9_DPRINTK(P9_DEBUG_MUX, " tag %d\n", req->tc->tag);
407 P9_DPRINTK(P9_DEBUG_MUX, "wakeup: %d\n", req->tc->tag);
409 EXPORT_SYMBOL(p9_client_cb);
412 * p9_parse_header - parse header arguments out of a packet
413 * @pdu: packet to parse
414 * @size: size of packet
415 * @type: type of request
416 * @tag: tag of packet
417 * @rewind: set if we need to rewind offset afterwards
421 p9_parse_header(struct p9_fcall *pdu, int32_t *size, int8_t *type, int16_t *tag,
427 int offset = pdu->offset;
434 err = p9pdu_readf(pdu, 0, "dbw", &r_size, &r_type, &r_tag);
436 goto rewind_and_exit;
442 P9_DPRINTK(P9_DEBUG_9P, "<<< size=%d type: %d tag: %d\n", pdu->size,
455 pdu->offset = offset;
458 EXPORT_SYMBOL(p9_parse_header);
461 * p9_check_errors - check 9p packet for error return and process it
462 * @c: current client instance
463 * @req: request to parse and check for error conditions
465 * returns error code if one is discovered, otherwise returns 0
467 * this will have to be more complicated if we have multiple
471 static int p9_check_errors(struct p9_client *c, struct p9_req_t *req)
477 err = p9_parse_header(req->rc, NULL, &type, NULL, 0);
479 P9_DPRINTK(P9_DEBUG_ERROR, "couldn't parse header %d\n", err);
483 if (type != P9_RERROR && type != P9_RLERROR)
486 if (!p9_is_proto_dotl(c)) {
489 if (req->tc->pbuf_size) {
490 /* Handle user buffers */
491 size_t len = req->rc->size - req->rc->offset;
492 if (req->tc->pubuf) {
494 err = copy_from_user(
495 &req->rc->sdata[req->rc->offset],
496 req->tc->pubuf, len);
503 memmove(&req->rc->sdata[req->rc->offset],
504 req->tc->pkbuf, len);
507 err = p9pdu_readf(req->rc, c->proto_version, "s?d",
512 if (p9_is_proto_dotu(c))
515 if (!err || !IS_ERR_VALUE(err)) {
516 err = p9_errstr2errno(ename, strlen(ename));
518 P9_DPRINTK(P9_DEBUG_9P, "<<< RERROR (%d) %s\n", -ecode,
524 err = p9pdu_readf(req->rc, c->proto_version, "d", &ecode);
527 P9_DPRINTK(P9_DEBUG_9P, "<<< RLERROR (%d)\n", -ecode);
534 P9_DPRINTK(P9_DEBUG_ERROR, "couldn't parse error%d\n", err);
539 static struct p9_req_t *
540 p9_client_rpc(struct p9_client *c, int8_t type, const char *fmt, ...);
543 * p9_client_flush - flush (cancel) a request
545 * @oldreq: request to cancel
547 * This sents a flush for a particular request and links
548 * the flush request to the original request. The current
549 * code only supports a single flush request although the protocol
550 * allows for multiple flush requests to be sent for a single request.
554 static int p9_client_flush(struct p9_client *c, struct p9_req_t *oldreq)
556 struct p9_req_t *req;
560 err = p9_parse_header(oldreq->tc, NULL, NULL, &oldtag, 1);
564 P9_DPRINTK(P9_DEBUG_9P, ">>> TFLUSH tag %d\n", oldtag);
566 req = p9_client_rpc(c, P9_TFLUSH, "w", oldtag);
571 /* if we haven't received a response for oldreq,
572 remove it from the list. */
574 if (oldreq->status == REQ_STATUS_FLSH)
575 list_del(&oldreq->req_list);
576 spin_unlock(&c->lock);
583 * p9_client_rpc - issue a request and wait for a response
585 * @type: type of request
586 * @fmt: protocol format string (see protocol.c)
588 * Returns request structure (which client must free using p9_free_req)
591 static struct p9_req_t *
592 p9_client_rpc(struct p9_client *c, int8_t type, const char *fmt, ...)
596 struct p9_req_t *req;
600 P9_DPRINTK(P9_DEBUG_MUX, "client %p op %d\n", c, type);
602 /* we allow for any status other than disconnected */
603 if (c->status == Disconnected)
604 return ERR_PTR(-EIO);
606 /* if status is begin_disconnected we allow only clunk request */
607 if ((c->status == BeginDisconnect) && (type != P9_TCLUNK))
608 return ERR_PTR(-EIO);
610 if (signal_pending(current)) {
612 clear_thread_flag(TIF_SIGPENDING);
617 if (type != P9_TVERSION) {
618 tag = p9_idpool_get(c->tagpool);
620 return ERR_PTR(-ENOMEM);
623 req = p9_tag_alloc(c, tag);
627 /* marshall the data */
628 p9pdu_prepare(req->tc, tag, type);
630 err = p9pdu_vwritef(req->tc, c->proto_version, fmt, ap);
634 p9pdu_finalize(req->tc);
636 err = c->trans_mod->request(c, req);
638 if (err != -ERESTARTSYS && err != -EFAULT)
639 c->status = Disconnected;
643 P9_DPRINTK(P9_DEBUG_MUX, "wait %p tag: %d\n", req->wq, tag);
644 err = wait_event_interruptible(*req->wq,
645 req->status >= REQ_STATUS_RCVD);
646 P9_DPRINTK(P9_DEBUG_MUX, "wait %p tag: %d returned %d\n",
649 if (req->status == REQ_STATUS_ERROR) {
650 P9_DPRINTK(P9_DEBUG_ERROR, "req_status error %d\n", req->t_err);
654 if ((err == -ERESTARTSYS) && (c->status == Connected)) {
655 P9_DPRINTK(P9_DEBUG_MUX, "flushing\n");
657 clear_thread_flag(TIF_SIGPENDING);
659 if (c->trans_mod->cancel(c, req))
660 p9_client_flush(c, req);
662 /* if we received the response anyway, don't signal error */
663 if (req->status == REQ_STATUS_RCVD)
668 spin_lock_irqsave(¤t->sighand->siglock, flags);
670 spin_unlock_irqrestore(¤t->sighand->siglock, flags);
676 err = p9_check_errors(c, req);
678 P9_DPRINTK(P9_DEBUG_MUX, "exit: client %p op %d\n", c, type);
683 P9_DPRINTK(P9_DEBUG_MUX, "exit: client %p op %d error: %d\n", c, type,
689 static struct p9_fid *p9_fid_create(struct p9_client *clnt)
695 P9_DPRINTK(P9_DEBUG_FID, "clnt %p\n", clnt);
696 fid = kmalloc(sizeof(struct p9_fid), GFP_KERNEL);
698 return ERR_PTR(-ENOMEM);
700 ret = p9_idpool_get(clnt->fidpool);
707 memset(&fid->qid, 0, sizeof(struct p9_qid));
709 fid->uid = current_fsuid();
712 spin_lock_irqsave(&clnt->lock, flags);
713 list_add(&fid->flist, &clnt->fidlist);
714 spin_unlock_irqrestore(&clnt->lock, flags);
723 static void p9_fid_destroy(struct p9_fid *fid)
725 struct p9_client *clnt;
728 P9_DPRINTK(P9_DEBUG_FID, "fid %d\n", fid->fid);
730 p9_idpool_put(fid->fid, clnt->fidpool);
731 spin_lock_irqsave(&clnt->lock, flags);
732 list_del(&fid->flist);
733 spin_unlock_irqrestore(&clnt->lock, flags);
738 static int p9_client_version(struct p9_client *c)
741 struct p9_req_t *req;
745 P9_DPRINTK(P9_DEBUG_9P, ">>> TVERSION msize %d protocol %d\n",
746 c->msize, c->proto_version);
748 switch (c->proto_version) {
750 req = p9_client_rpc(c, P9_TVERSION, "ds",
751 c->msize, "9P2000.L");
754 req = p9_client_rpc(c, P9_TVERSION, "ds",
755 c->msize, "9P2000.u");
757 case p9_proto_legacy:
758 req = p9_client_rpc(c, P9_TVERSION, "ds",
769 err = p9pdu_readf(req->rc, c->proto_version, "ds", &msize, &version);
771 P9_DPRINTK(P9_DEBUG_9P, "version error %d\n", err);
772 P9_DUMP_PKT(1, req->rc);
776 P9_DPRINTK(P9_DEBUG_9P, "<<< RVERSION msize %d %s\n", msize, version);
777 if (!strncmp(version, "9P2000.L", 8))
778 c->proto_version = p9_proto_2000L;
779 else if (!strncmp(version, "9P2000.u", 8))
780 c->proto_version = p9_proto_2000u;
781 else if (!strncmp(version, "9P2000", 6))
782 c->proto_version = p9_proto_legacy;
788 if (msize < c->msize)
798 struct p9_client *p9_client_create(const char *dev_name, char *options)
801 struct p9_client *clnt;
804 clnt = kmalloc(sizeof(struct p9_client), GFP_KERNEL);
806 return ERR_PTR(-ENOMEM);
808 clnt->trans_mod = NULL;
810 spin_lock_init(&clnt->lock);
811 INIT_LIST_HEAD(&clnt->fidlist);
813 err = p9_tag_init(clnt);
817 err = parse_opts(options, clnt);
819 goto destroy_tagpool;
821 if (!clnt->trans_mod)
822 clnt->trans_mod = v9fs_get_default_trans();
824 if (clnt->trans_mod == NULL) {
825 err = -EPROTONOSUPPORT;
826 P9_DPRINTK(P9_DEBUG_ERROR,
827 "No transport defined or default transport\n");
828 goto destroy_tagpool;
831 clnt->fidpool = p9_idpool_create();
832 if (IS_ERR(clnt->fidpool)) {
833 err = PTR_ERR(clnt->fidpool);
837 P9_DPRINTK(P9_DEBUG_MUX, "clnt %p trans %p msize %d protocol %d\n",
838 clnt, clnt->trans_mod, clnt->msize, clnt->proto_version);
840 err = clnt->trans_mod->create(clnt, dev_name, options);
842 goto destroy_fidpool;
844 if ((clnt->msize+P9_IOHDRSZ) > clnt->trans_mod->maxsize)
845 clnt->msize = clnt->trans_mod->maxsize-P9_IOHDRSZ;
847 err = p9_client_version(clnt);
854 clnt->trans_mod->close(clnt);
856 p9_idpool_destroy(clnt->fidpool);
858 v9fs_put_trans(clnt->trans_mod);
860 p9_idpool_destroy(clnt->tagpool);
865 EXPORT_SYMBOL(p9_client_create);
867 void p9_client_destroy(struct p9_client *clnt)
869 struct p9_fid *fid, *fidptr;
871 P9_DPRINTK(P9_DEBUG_MUX, "clnt %p\n", clnt);
874 clnt->trans_mod->close(clnt);
876 v9fs_put_trans(clnt->trans_mod);
878 list_for_each_entry_safe(fid, fidptr, &clnt->fidlist, flist) {
879 printk(KERN_INFO "Found fid %d not clunked\n", fid->fid);
884 p9_idpool_destroy(clnt->fidpool);
886 p9_tag_cleanup(clnt);
890 EXPORT_SYMBOL(p9_client_destroy);
892 void p9_client_disconnect(struct p9_client *clnt)
894 P9_DPRINTK(P9_DEBUG_9P, "clnt %p\n", clnt);
895 clnt->status = Disconnected;
897 EXPORT_SYMBOL(p9_client_disconnect);
899 void p9_client_begin_disconnect(struct p9_client *clnt)
901 P9_DPRINTK(P9_DEBUG_9P, "clnt %p\n", clnt);
902 clnt->status = BeginDisconnect;
904 EXPORT_SYMBOL(p9_client_begin_disconnect);
906 struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,
907 char *uname, u32 n_uname, char *aname)
910 struct p9_req_t *req;
914 P9_DPRINTK(P9_DEBUG_9P, ">>> TATTACH afid %d uname %s aname %s\n",
915 afid ? afid->fid : -1, uname, aname);
918 fid = p9_fid_create(clnt);
925 req = p9_client_rpc(clnt, P9_TATTACH, "ddss?d", fid->fid,
926 afid ? afid->fid : P9_NOFID, uname, aname, n_uname);
932 err = p9pdu_readf(req->rc, clnt->proto_version, "Q", &qid);
934 P9_DUMP_PKT(1, req->rc);
935 p9_free_req(clnt, req);
939 P9_DPRINTK(P9_DEBUG_9P, "<<< RATTACH qid %x.%llx.%x\n",
941 (unsigned long long)qid.path,
944 memmove(&fid->qid, &qid, sizeof(struct p9_qid));
946 p9_free_req(clnt, req);
954 EXPORT_SYMBOL(p9_client_attach);
956 struct p9_fid *p9_client_walk(struct p9_fid *oldfid, uint16_t nwname,
957 char **wnames, int clone)
960 struct p9_client *clnt;
962 struct p9_qid *wqids;
963 struct p9_req_t *req;
964 uint16_t nwqids, count;
970 fid = p9_fid_create(clnt);
977 fid->uid = oldfid->uid;
982 P9_DPRINTK(P9_DEBUG_9P, ">>> TWALK fids %d,%d nwname %ud wname[0] %s\n",
983 oldfid->fid, fid->fid, nwname, wnames ? wnames[0] : NULL);
985 req = p9_client_rpc(clnt, P9_TWALK, "ddT", oldfid->fid, fid->fid,
992 err = p9pdu_readf(req->rc, clnt->proto_version, "R", &nwqids, &wqids);
994 P9_DUMP_PKT(1, req->rc);
995 p9_free_req(clnt, req);
998 p9_free_req(clnt, req);
1000 P9_DPRINTK(P9_DEBUG_9P, "<<< RWALK nwqid %d:\n", nwqids);
1002 if (nwqids != nwname) {
1007 for (count = 0; count < nwqids; count++)
1008 P9_DPRINTK(P9_DEBUG_9P, "<<< [%d] %x.%llx.%x\n",
1009 count, wqids[count].type,
1010 (unsigned long long)wqids[count].path,
1011 wqids[count].version);
1014 memmove(&fid->qid, &wqids[nwqids - 1], sizeof(struct p9_qid));
1016 fid->qid = oldfid->qid;
1023 p9_client_clunk(fid);
1027 if (fid && (fid != oldfid))
1028 p9_fid_destroy(fid);
1030 return ERR_PTR(err);
1032 EXPORT_SYMBOL(p9_client_walk);
1034 int p9_client_open(struct p9_fid *fid, int mode)
1037 struct p9_client *clnt;
1038 struct p9_req_t *req;
1043 P9_DPRINTK(P9_DEBUG_9P, ">>> %s fid %d mode %d\n",
1044 p9_is_proto_dotl(clnt) ? "TLOPEN" : "TOPEN", fid->fid, mode);
1047 if (fid->mode != -1)
1050 if (p9_is_proto_dotl(clnt))
1051 req = p9_client_rpc(clnt, P9_TLOPEN, "dd", fid->fid, mode);
1053 req = p9_client_rpc(clnt, P9_TOPEN, "db", fid->fid, mode);
1059 err = p9pdu_readf(req->rc, clnt->proto_version, "Qd", &qid, &iounit);
1061 P9_DUMP_PKT(1, req->rc);
1062 goto free_and_error;
1065 P9_DPRINTK(P9_DEBUG_9P, "<<< %s qid %x.%llx.%x iounit %x\n",
1066 p9_is_proto_dotl(clnt) ? "RLOPEN" : "ROPEN", qid.type,
1067 (unsigned long long)qid.path, qid.version, iounit);
1070 fid->iounit = iounit;
1073 p9_free_req(clnt, req);
1077 EXPORT_SYMBOL(p9_client_open);
1079 int p9_client_create_dotl(struct p9_fid *ofid, char *name, u32 flags, u32 mode,
1080 gid_t gid, struct p9_qid *qid)
1083 struct p9_client *clnt;
1084 struct p9_req_t *req;
1087 P9_DPRINTK(P9_DEBUG_9P,
1088 ">>> TLCREATE fid %d name %s flags %d mode %d gid %d\n",
1089 ofid->fid, name, flags, mode, gid);
1092 if (ofid->mode != -1)
1095 req = p9_client_rpc(clnt, P9_TLCREATE, "dsddd", ofid->fid, name, flags,
1102 err = p9pdu_readf(req->rc, clnt->proto_version, "Qd", qid, &iounit);
1104 P9_DUMP_PKT(1, req->rc);
1105 goto free_and_error;
1108 P9_DPRINTK(P9_DEBUG_9P, "<<< RLCREATE qid %x.%llx.%x iounit %x\n",
1110 (unsigned long long)qid->path,
1111 qid->version, iounit);
1114 ofid->iounit = iounit;
1117 p9_free_req(clnt, req);
1121 EXPORT_SYMBOL(p9_client_create_dotl);
1123 int p9_client_fcreate(struct p9_fid *fid, char *name, u32 perm, int mode,
1127 struct p9_client *clnt;
1128 struct p9_req_t *req;
1132 P9_DPRINTK(P9_DEBUG_9P, ">>> TCREATE fid %d name %s perm %d mode %d\n",
1133 fid->fid, name, perm, mode);
1137 if (fid->mode != -1)
1140 req = p9_client_rpc(clnt, P9_TCREATE, "dsdb?s", fid->fid, name, perm,
1147 err = p9pdu_readf(req->rc, clnt->proto_version, "Qd", &qid, &iounit);
1149 P9_DUMP_PKT(1, req->rc);
1150 goto free_and_error;
1153 P9_DPRINTK(P9_DEBUG_9P, "<<< RCREATE qid %x.%llx.%x iounit %x\n",
1155 (unsigned long long)qid.path,
1156 qid.version, iounit);
1159 fid->iounit = iounit;
1162 p9_free_req(clnt, req);
1166 EXPORT_SYMBOL(p9_client_fcreate);
1168 int p9_client_symlink(struct p9_fid *dfid, char *name, char *symtgt, gid_t gid,
1172 struct p9_client *clnt;
1173 struct p9_req_t *req;
1175 P9_DPRINTK(P9_DEBUG_9P, ">>> TSYMLINK dfid %d name %s symtgt %s\n",
1176 dfid->fid, name, symtgt);
1179 req = p9_client_rpc(clnt, P9_TSYMLINK, "dssd", dfid->fid, name, symtgt,
1186 err = p9pdu_readf(req->rc, clnt->proto_version, "Q", qid);
1188 P9_DUMP_PKT(1, req->rc);
1189 goto free_and_error;
1192 P9_DPRINTK(P9_DEBUG_9P, "<<< RSYMLINK qid %x.%llx.%x\n",
1193 qid->type, (unsigned long long)qid->path, qid->version);
1196 p9_free_req(clnt, req);
1200 EXPORT_SYMBOL(p9_client_symlink);
1202 int p9_client_link(struct p9_fid *dfid, struct p9_fid *oldfid, char *newname)
1204 struct p9_client *clnt;
1205 struct p9_req_t *req;
1207 P9_DPRINTK(P9_DEBUG_9P, ">>> TLINK dfid %d oldfid %d newname %s\n",
1208 dfid->fid, oldfid->fid, newname);
1210 req = p9_client_rpc(clnt, P9_TLINK, "dds", dfid->fid, oldfid->fid,
1213 return PTR_ERR(req);
1215 P9_DPRINTK(P9_DEBUG_9P, "<<< RLINK\n");
1216 p9_free_req(clnt, req);
1219 EXPORT_SYMBOL(p9_client_link);
1221 int p9_client_fsync(struct p9_fid *fid, int datasync)
1224 struct p9_client *clnt;
1225 struct p9_req_t *req;
1227 P9_DPRINTK(P9_DEBUG_9P, ">>> TFSYNC fid %d datasync:%d\n",
1228 fid->fid, datasync);
1232 req = p9_client_rpc(clnt, P9_TFSYNC, "dd", fid->fid, datasync);
1238 P9_DPRINTK(P9_DEBUG_9P, "<<< RFSYNC fid %d\n", fid->fid);
1240 p9_free_req(clnt, req);
1245 EXPORT_SYMBOL(p9_client_fsync);
1247 int p9_client_clunk(struct p9_fid *fid)
1250 struct p9_client *clnt;
1251 struct p9_req_t *req;
1254 P9_EPRINTK(KERN_WARNING, "Trying to clunk with NULL fid\n");
1259 P9_DPRINTK(P9_DEBUG_9P, ">>> TCLUNK fid %d\n", fid->fid);
1263 req = p9_client_rpc(clnt, P9_TCLUNK, "d", fid->fid);
1269 P9_DPRINTK(P9_DEBUG_9P, "<<< RCLUNK fid %d\n", fid->fid);
1271 p9_free_req(clnt, req);
1274 * Fid is not valid even after a failed clunk
1276 p9_fid_destroy(fid);
1279 EXPORT_SYMBOL(p9_client_clunk);
1281 int p9_client_remove(struct p9_fid *fid)
1284 struct p9_client *clnt;
1285 struct p9_req_t *req;
1287 P9_DPRINTK(P9_DEBUG_9P, ">>> TREMOVE fid %d\n", fid->fid);
1291 req = p9_client_rpc(clnt, P9_TREMOVE, "d", fid->fid);
1297 P9_DPRINTK(P9_DEBUG_9P, "<<< RREMOVE fid %d\n", fid->fid);
1299 p9_free_req(clnt, req);
1301 p9_fid_destroy(fid);
1304 EXPORT_SYMBOL(p9_client_remove);
1307 p9_client_read(struct p9_fid *fid, char *data, char __user *udata, u64 offset,
1311 struct p9_client *clnt;
1312 struct p9_req_t *req;
1315 P9_DPRINTK(P9_DEBUG_9P, ">>> TREAD fid %d offset %llu %d\n", fid->fid,
1316 (long long unsigned) offset, count);
1320 rsize = fid->iounit;
1321 if (!rsize || rsize > clnt->msize-P9_IOHDRSZ)
1322 rsize = clnt->msize - P9_IOHDRSZ;
1327 /* Don't bother zerocopy for small IO (< 1024) */
1328 if (((clnt->trans_mod->pref & P9_TRANS_PREF_PAYLOAD_MASK) ==
1329 P9_TRANS_PREF_PAYLOAD_SEP) && (rsize > 1024)) {
1330 req = p9_client_rpc(clnt, P9_TREAD, "dqE", fid->fid, offset,
1331 rsize, data, udata);
1333 req = p9_client_rpc(clnt, P9_TREAD, "dqd", fid->fid, offset,
1341 err = p9pdu_readf(req->rc, clnt->proto_version, "D", &count, &dataptr);
1343 P9_DUMP_PKT(1, req->rc);
1344 goto free_and_error;
1347 P9_DPRINTK(P9_DEBUG_9P, "<<< RREAD count %d\n", count);
1348 P9_DUMP_PKT(1, req->rc);
1350 if (!req->tc->pbuf_size) {
1352 memmove(data, dataptr, count);
1354 err = copy_to_user(udata, dataptr, count);
1357 goto free_and_error;
1361 p9_free_req(clnt, req);
1365 p9_free_req(clnt, req);
1369 EXPORT_SYMBOL(p9_client_read);
1372 p9_client_write(struct p9_fid *fid, char *data, const char __user *udata,
1373 u64 offset, u32 count)
1376 struct p9_client *clnt;
1377 struct p9_req_t *req;
1379 P9_DPRINTK(P9_DEBUG_9P, ">>> TWRITE fid %d offset %llu count %d\n",
1380 fid->fid, (long long unsigned) offset, count);
1384 rsize = fid->iounit;
1385 if (!rsize || rsize > clnt->msize-P9_IOHDRSZ)
1386 rsize = clnt->msize - P9_IOHDRSZ;
1391 /* Don't bother zerocopy form small IO (< 1024) */
1392 if (((clnt->trans_mod->pref & P9_TRANS_PREF_PAYLOAD_MASK) ==
1393 P9_TRANS_PREF_PAYLOAD_SEP) && (rsize > 1024)) {
1394 req = p9_client_rpc(clnt, P9_TWRITE, "dqE", fid->fid, offset,
1395 rsize, data, udata);
1399 req = p9_client_rpc(clnt, P9_TWRITE, "dqD", fid->fid,
1400 offset, rsize, data);
1402 req = p9_client_rpc(clnt, P9_TWRITE, "dqU", fid->fid,
1403 offset, rsize, udata);
1410 err = p9pdu_readf(req->rc, clnt->proto_version, "d", &count);
1412 P9_DUMP_PKT(1, req->rc);
1413 goto free_and_error;
1416 P9_DPRINTK(P9_DEBUG_9P, "<<< RWRITE count %d\n", count);
1418 p9_free_req(clnt, req);
1422 p9_free_req(clnt, req);
1426 EXPORT_SYMBOL(p9_client_write);
1428 struct p9_wstat *p9_client_stat(struct p9_fid *fid)
1431 struct p9_client *clnt;
1432 struct p9_wstat *ret = kmalloc(sizeof(struct p9_wstat), GFP_KERNEL);
1433 struct p9_req_t *req;
1436 P9_DPRINTK(P9_DEBUG_9P, ">>> TSTAT fid %d\n", fid->fid);
1439 return ERR_PTR(-ENOMEM);
1444 req = p9_client_rpc(clnt, P9_TSTAT, "d", fid->fid);
1450 err = p9pdu_readf(req->rc, clnt->proto_version, "wS", &ignored, ret);
1452 P9_DUMP_PKT(1, req->rc);
1453 p9_free_req(clnt, req);
1457 P9_DPRINTK(P9_DEBUG_9P,
1458 "<<< RSTAT sz=%x type=%x dev=%x qid=%x.%llx.%x\n"
1459 "<<< mode=%8.8x atime=%8.8x mtime=%8.8x length=%llx\n"
1460 "<<< name=%s uid=%s gid=%s muid=%s extension=(%s)\n"
1461 "<<< uid=%d gid=%d n_muid=%d\n",
1462 ret->size, ret->type, ret->dev, ret->qid.type,
1463 (unsigned long long)ret->qid.path, ret->qid.version, ret->mode,
1464 ret->atime, ret->mtime, (unsigned long long)ret->length,
1465 ret->name, ret->uid, ret->gid, ret->muid, ret->extension,
1466 ret->n_uid, ret->n_gid, ret->n_muid);
1468 p9_free_req(clnt, req);
1473 return ERR_PTR(err);
1475 EXPORT_SYMBOL(p9_client_stat);
1477 struct p9_stat_dotl *p9_client_getattr_dotl(struct p9_fid *fid,
1481 struct p9_client *clnt;
1482 struct p9_stat_dotl *ret = kmalloc(sizeof(struct p9_stat_dotl),
1484 struct p9_req_t *req;
1486 P9_DPRINTK(P9_DEBUG_9P, ">>> TGETATTR fid %d, request_mask %lld\n",
1487 fid->fid, request_mask);
1490 return ERR_PTR(-ENOMEM);
1495 req = p9_client_rpc(clnt, P9_TGETATTR, "dq", fid->fid, request_mask);
1501 err = p9pdu_readf(req->rc, clnt->proto_version, "A", ret);
1503 P9_DUMP_PKT(1, req->rc);
1504 p9_free_req(clnt, req);
1508 P9_DPRINTK(P9_DEBUG_9P,
1509 "<<< RGETATTR st_result_mask=%lld\n"
1510 "<<< qid=%x.%llx.%x\n"
1511 "<<< st_mode=%8.8x st_nlink=%llu\n"
1512 "<<< st_uid=%d st_gid=%d\n"
1513 "<<< st_rdev=%llx st_size=%llx st_blksize=%llu st_blocks=%llu\n"
1514 "<<< st_atime_sec=%lld st_atime_nsec=%lld\n"
1515 "<<< st_mtime_sec=%lld st_mtime_nsec=%lld\n"
1516 "<<< st_ctime_sec=%lld st_ctime_nsec=%lld\n"
1517 "<<< st_btime_sec=%lld st_btime_nsec=%lld\n"
1518 "<<< st_gen=%lld st_data_version=%lld",
1519 ret->st_result_mask, ret->qid.type, ret->qid.path,
1520 ret->qid.version, ret->st_mode, ret->st_nlink, ret->st_uid,
1521 ret->st_gid, ret->st_rdev, ret->st_size, ret->st_blksize,
1522 ret->st_blocks, ret->st_atime_sec, ret->st_atime_nsec,
1523 ret->st_mtime_sec, ret->st_mtime_nsec, ret->st_ctime_sec,
1524 ret->st_ctime_nsec, ret->st_btime_sec, ret->st_btime_nsec,
1525 ret->st_gen, ret->st_data_version);
1527 p9_free_req(clnt, req);
1532 return ERR_PTR(err);
1534 EXPORT_SYMBOL(p9_client_getattr_dotl);
1536 static int p9_client_statsize(struct p9_wstat *wst, int proto_version)
1540 /* NOTE: size shouldn't include its own length */
1541 /* size[2] type[2] dev[4] qid[13] */
1542 /* mode[4] atime[4] mtime[4] length[8]*/
1543 /* name[s] uid[s] gid[s] muid[s] */
1544 ret = 2+4+13+4+4+4+8+2+2+2+2;
1547 ret += strlen(wst->name);
1549 ret += strlen(wst->uid);
1551 ret += strlen(wst->gid);
1553 ret += strlen(wst->muid);
1555 if ((proto_version == p9_proto_2000u) ||
1556 (proto_version == p9_proto_2000L)) {
1557 ret += 2+4+4+4; /* extension[s] n_uid[4] n_gid[4] n_muid[4] */
1559 ret += strlen(wst->extension);
1565 int p9_client_wstat(struct p9_fid *fid, struct p9_wstat *wst)
1568 struct p9_req_t *req;
1569 struct p9_client *clnt;
1573 wst->size = p9_client_statsize(wst, clnt->proto_version);
1574 P9_DPRINTK(P9_DEBUG_9P, ">>> TWSTAT fid %d\n", fid->fid);
1575 P9_DPRINTK(P9_DEBUG_9P,
1576 " sz=%x type=%x dev=%x qid=%x.%llx.%x\n"
1577 " mode=%8.8x atime=%8.8x mtime=%8.8x length=%llx\n"
1578 " name=%s uid=%s gid=%s muid=%s extension=(%s)\n"
1579 " uid=%d gid=%d n_muid=%d\n",
1580 wst->size, wst->type, wst->dev, wst->qid.type,
1581 (unsigned long long)wst->qid.path, wst->qid.version, wst->mode,
1582 wst->atime, wst->mtime, (unsigned long long)wst->length,
1583 wst->name, wst->uid, wst->gid, wst->muid, wst->extension,
1584 wst->n_uid, wst->n_gid, wst->n_muid);
1586 req = p9_client_rpc(clnt, P9_TWSTAT, "dwS", fid->fid, wst->size+2, wst);
1592 P9_DPRINTK(P9_DEBUG_9P, "<<< RWSTAT fid %d\n", fid->fid);
1594 p9_free_req(clnt, req);
1598 EXPORT_SYMBOL(p9_client_wstat);
1600 int p9_client_setattr(struct p9_fid *fid, struct p9_iattr_dotl *p9attr)
1603 struct p9_req_t *req;
1604 struct p9_client *clnt;
1608 P9_DPRINTK(P9_DEBUG_9P, ">>> TSETATTR fid %d\n", fid->fid);
1609 P9_DPRINTK(P9_DEBUG_9P,
1610 " valid=%x mode=%x uid=%d gid=%d size=%lld\n"
1611 " atime_sec=%lld atime_nsec=%lld\n"
1612 " mtime_sec=%lld mtime_nsec=%lld\n",
1613 p9attr->valid, p9attr->mode, p9attr->uid, p9attr->gid,
1614 p9attr->size, p9attr->atime_sec, p9attr->atime_nsec,
1615 p9attr->mtime_sec, p9attr->mtime_nsec);
1617 req = p9_client_rpc(clnt, P9_TSETATTR, "dI", fid->fid, p9attr);
1623 P9_DPRINTK(P9_DEBUG_9P, "<<< RSETATTR fid %d\n", fid->fid);
1624 p9_free_req(clnt, req);
1628 EXPORT_SYMBOL(p9_client_setattr);
1630 int p9_client_statfs(struct p9_fid *fid, struct p9_rstatfs *sb)
1633 struct p9_req_t *req;
1634 struct p9_client *clnt;
1639 P9_DPRINTK(P9_DEBUG_9P, ">>> TSTATFS fid %d\n", fid->fid);
1641 req = p9_client_rpc(clnt, P9_TSTATFS, "d", fid->fid);
1647 err = p9pdu_readf(req->rc, clnt->proto_version, "ddqqqqqqd", &sb->type,
1648 &sb->bsize, &sb->blocks, &sb->bfree, &sb->bavail,
1649 &sb->files, &sb->ffree, &sb->fsid, &sb->namelen);
1651 P9_DUMP_PKT(1, req->rc);
1652 p9_free_req(clnt, req);
1656 P9_DPRINTK(P9_DEBUG_9P, "<<< RSTATFS fid %d type 0x%lx bsize %ld "
1657 "blocks %llu bfree %llu bavail %llu files %llu ffree %llu "
1658 "fsid %llu namelen %ld\n",
1659 fid->fid, (long unsigned int)sb->type, (long int)sb->bsize,
1660 sb->blocks, sb->bfree, sb->bavail, sb->files, sb->ffree,
1661 sb->fsid, (long int)sb->namelen);
1663 p9_free_req(clnt, req);
1667 EXPORT_SYMBOL(p9_client_statfs);
1669 int p9_client_rename(struct p9_fid *fid,
1670 struct p9_fid *newdirfid, const char *name)
1673 struct p9_req_t *req;
1674 struct p9_client *clnt;
1679 P9_DPRINTK(P9_DEBUG_9P, ">>> TRENAME fid %d newdirfid %d name %s\n",
1680 fid->fid, newdirfid->fid, name);
1682 req = p9_client_rpc(clnt, P9_TRENAME, "dds", fid->fid,
1683 newdirfid->fid, name);
1689 P9_DPRINTK(P9_DEBUG_9P, "<<< RRENAME fid %d\n", fid->fid);
1691 p9_free_req(clnt, req);
1695 EXPORT_SYMBOL(p9_client_rename);
1697 int p9_client_renameat(struct p9_fid *olddirfid, const char *old_name,
1698 struct p9_fid *newdirfid, const char *new_name)
1701 struct p9_req_t *req;
1702 struct p9_client *clnt;
1705 clnt = olddirfid->clnt;
1707 P9_DPRINTK(P9_DEBUG_9P, ">>> TRENAMEAT olddirfid %d old name %s"
1708 " newdirfid %d new name %s\n", olddirfid->fid, old_name,
1709 newdirfid->fid, new_name);
1711 req = p9_client_rpc(clnt, P9_TRENAMEAT, "dsds", olddirfid->fid,
1712 old_name, newdirfid->fid, new_name);
1718 P9_DPRINTK(P9_DEBUG_9P, "<<< RRENAMEAT newdirfid %d new name %s\n",
1719 newdirfid->fid, new_name);
1721 p9_free_req(clnt, req);
1725 EXPORT_SYMBOL(p9_client_renameat);
1728 * An xattrwalk without @attr_name gives the fid for the lisxattr namespace
1730 struct p9_fid *p9_client_xattrwalk(struct p9_fid *file_fid,
1731 const char *attr_name, u64 *attr_size)
1734 struct p9_req_t *req;
1735 struct p9_client *clnt;
1736 struct p9_fid *attr_fid;
1739 clnt = file_fid->clnt;
1740 attr_fid = p9_fid_create(clnt);
1741 if (IS_ERR(attr_fid)) {
1742 err = PTR_ERR(attr_fid);
1746 P9_DPRINTK(P9_DEBUG_9P,
1747 ">>> TXATTRWALK file_fid %d, attr_fid %d name %s\n",
1748 file_fid->fid, attr_fid->fid, attr_name);
1750 req = p9_client_rpc(clnt, P9_TXATTRWALK, "dds",
1751 file_fid->fid, attr_fid->fid, attr_name);
1756 err = p9pdu_readf(req->rc, clnt->proto_version, "q", attr_size);
1758 P9_DUMP_PKT(1, req->rc);
1759 p9_free_req(clnt, req);
1762 p9_free_req(clnt, req);
1763 P9_DPRINTK(P9_DEBUG_9P, "<<< RXATTRWALK fid %d size %llu\n",
1764 attr_fid->fid, *attr_size);
1767 p9_client_clunk(attr_fid);
1770 if (attr_fid && (attr_fid != file_fid))
1771 p9_fid_destroy(attr_fid);
1773 return ERR_PTR(err);
1775 EXPORT_SYMBOL_GPL(p9_client_xattrwalk);
1777 int p9_client_xattrcreate(struct p9_fid *fid, const char *name,
1778 u64 attr_size, int flags)
1781 struct p9_req_t *req;
1782 struct p9_client *clnt;
1784 P9_DPRINTK(P9_DEBUG_9P,
1785 ">>> TXATTRCREATE fid %d name %s size %lld flag %d\n",
1786 fid->fid, name, (long long)attr_size, flags);
1789 req = p9_client_rpc(clnt, P9_TXATTRCREATE, "dsqd",
1790 fid->fid, name, attr_size, flags);
1795 P9_DPRINTK(P9_DEBUG_9P, "<<< RXATTRCREATE fid %d\n", fid->fid);
1796 p9_free_req(clnt, req);
1800 EXPORT_SYMBOL_GPL(p9_client_xattrcreate);
1802 int p9_client_readdir(struct p9_fid *fid, char *data, u32 count, u64 offset)
1805 struct p9_client *clnt;
1806 struct p9_req_t *req;
1809 P9_DPRINTK(P9_DEBUG_9P, ">>> TREADDIR fid %d offset %llu count %d\n",
1810 fid->fid, (long long unsigned) offset, count);
1815 rsize = fid->iounit;
1816 if (!rsize || rsize > clnt->msize-P9_READDIRHDRSZ)
1817 rsize = clnt->msize - P9_READDIRHDRSZ;
1822 if ((clnt->trans_mod->pref & P9_TRANS_PREF_PAYLOAD_MASK) ==
1823 P9_TRANS_PREF_PAYLOAD_SEP) {
1824 req = p9_client_rpc(clnt, P9_TREADDIR, "dqF", fid->fid,
1825 offset, rsize, data);
1827 req = p9_client_rpc(clnt, P9_TREADDIR, "dqd", fid->fid,
1835 err = p9pdu_readf(req->rc, clnt->proto_version, "D", &count, &dataptr);
1837 P9_DUMP_PKT(1, req->rc);
1838 goto free_and_error;
1841 P9_DPRINTK(P9_DEBUG_9P, "<<< RREADDIR count %d\n", count);
1843 if (!req->tc->pbuf_size && data)
1844 memmove(data, dataptr, count);
1846 p9_free_req(clnt, req);
1850 p9_free_req(clnt, req);
1854 EXPORT_SYMBOL(p9_client_readdir);
1856 int p9_client_mknod_dotl(struct p9_fid *fid, char *name, int mode,
1857 dev_t rdev, gid_t gid, struct p9_qid *qid)
1860 struct p9_client *clnt;
1861 struct p9_req_t *req;
1865 P9_DPRINTK(P9_DEBUG_9P, ">>> TMKNOD fid %d name %s mode %d major %d "
1866 "minor %d\n", fid->fid, name, mode, MAJOR(rdev), MINOR(rdev));
1867 req = p9_client_rpc(clnt, P9_TMKNOD, "dsdddd", fid->fid, name, mode,
1868 MAJOR(rdev), MINOR(rdev), gid);
1870 return PTR_ERR(req);
1872 err = p9pdu_readf(req->rc, clnt->proto_version, "Q", qid);
1874 P9_DUMP_PKT(1, req->rc);
1877 P9_DPRINTK(P9_DEBUG_9P, "<<< RMKNOD qid %x.%llx.%x\n", qid->type,
1878 (unsigned long long)qid->path, qid->version);
1881 p9_free_req(clnt, req);
1885 EXPORT_SYMBOL(p9_client_mknod_dotl);
1887 int p9_client_mkdir_dotl(struct p9_fid *fid, char *name, int mode,
1888 gid_t gid, struct p9_qid *qid)
1891 struct p9_client *clnt;
1892 struct p9_req_t *req;
1896 P9_DPRINTK(P9_DEBUG_9P, ">>> TMKDIR fid %d name %s mode %d gid %d\n",
1897 fid->fid, name, mode, gid);
1898 req = p9_client_rpc(clnt, P9_TMKDIR, "dsdd", fid->fid, name, mode,
1901 return PTR_ERR(req);
1903 err = p9pdu_readf(req->rc, clnt->proto_version, "Q", qid);
1905 P9_DUMP_PKT(1, req->rc);
1908 P9_DPRINTK(P9_DEBUG_9P, "<<< RMKDIR qid %x.%llx.%x\n", qid->type,
1909 (unsigned long long)qid->path, qid->version);
1912 p9_free_req(clnt, req);
1916 EXPORT_SYMBOL(p9_client_mkdir_dotl);
1918 int p9_client_lock_dotl(struct p9_fid *fid, struct p9_flock *flock, u8 *status)
1921 struct p9_client *clnt;
1922 struct p9_req_t *req;
1926 P9_DPRINTK(P9_DEBUG_9P, ">>> TLOCK fid %d type %i flags %d "
1927 "start %lld length %lld proc_id %d client_id %s\n",
1928 fid->fid, flock->type, flock->flags, flock->start,
1929 flock->length, flock->proc_id, flock->client_id);
1931 req = p9_client_rpc(clnt, P9_TLOCK, "dbdqqds", fid->fid, flock->type,
1932 flock->flags, flock->start, flock->length,
1933 flock->proc_id, flock->client_id);
1936 return PTR_ERR(req);
1938 err = p9pdu_readf(req->rc, clnt->proto_version, "b", status);
1940 P9_DUMP_PKT(1, req->rc);
1943 P9_DPRINTK(P9_DEBUG_9P, "<<< RLOCK status %i\n", *status);
1945 p9_free_req(clnt, req);
1949 EXPORT_SYMBOL(p9_client_lock_dotl);
1951 int p9_client_getlock_dotl(struct p9_fid *fid, struct p9_getlock *glock)
1954 struct p9_client *clnt;
1955 struct p9_req_t *req;
1959 P9_DPRINTK(P9_DEBUG_9P, ">>> TGETLOCK fid %d, type %i start %lld "
1960 "length %lld proc_id %d client_id %s\n", fid->fid, glock->type,
1961 glock->start, glock->length, glock->proc_id, glock->client_id);
1963 req = p9_client_rpc(clnt, P9_TGETLOCK, "dbqqds", fid->fid, glock->type,
1964 glock->start, glock->length, glock->proc_id, glock->client_id);
1967 return PTR_ERR(req);
1969 err = p9pdu_readf(req->rc, clnt->proto_version, "bqqds", &glock->type,
1970 &glock->start, &glock->length, &glock->proc_id,
1973 P9_DUMP_PKT(1, req->rc);
1976 P9_DPRINTK(P9_DEBUG_9P, "<<< RGETLOCK type %i start %lld length %lld "
1977 "proc_id %d client_id %s\n", glock->type, glock->start,
1978 glock->length, glock->proc_id, glock->client_id);
1980 p9_free_req(clnt, req);
1983 EXPORT_SYMBOL(p9_client_getlock_dotl);
1985 int p9_client_readlink(struct p9_fid *fid, char **target)
1988 struct p9_client *clnt;
1989 struct p9_req_t *req;
1993 P9_DPRINTK(P9_DEBUG_9P, ">>> TREADLINK fid %d\n", fid->fid);
1995 req = p9_client_rpc(clnt, P9_TREADLINK, "d", fid->fid);
1997 return PTR_ERR(req);
1999 err = p9pdu_readf(req->rc, clnt->proto_version, "s", target);
2001 P9_DUMP_PKT(1, req->rc);
2004 P9_DPRINTK(P9_DEBUG_9P, "<<< RREADLINK target %s\n", *target);
2006 p9_free_req(clnt, req);
2009 EXPORT_SYMBOL(p9_client_readlink);