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. ",
95 static struct p9_req_t
*
96 p9_client_rpc(struct p9_client
*c
, int8_t type
, const char *fmt
, ...);
99 * parse_options - parse mount options into client structure
100 * @opts: options string passed from mount
101 * @clnt: existing v9fs client information
103 * Return 0 upon success, -ERRNO upon failure
106 static int parse_opts(char *opts
, struct p9_client
*clnt
)
108 char *options
, *tmp_options
;
110 substring_t args
[MAX_OPT_ARGS
];
114 clnt
->proto_version
= p9_proto_2000u
;
120 tmp_options
= kstrdup(opts
, GFP_KERNEL
);
122 P9_DPRINTK(P9_DEBUG_ERROR
,
123 "failed to allocate copy of option string\n");
126 options
= tmp_options
;
128 while ((p
= strsep(&options
, ",")) != NULL
) {
132 token
= match_token(p
, tokens
, args
);
133 if (token
< Opt_trans
) {
134 int r
= match_int(&args
[0], &option
);
136 P9_DPRINTK(P9_DEBUG_ERROR
,
137 "integer field, but no integer?\n");
144 clnt
->msize
= option
;
147 clnt
->trans_mod
= v9fs_get_trans_by_name(&args
[0]);
148 if(clnt
->trans_mod
== NULL
) {
149 P9_DPRINTK(P9_DEBUG_ERROR
,
150 "Could not find request transport: %s\n",
153 goto free_and_return
;
157 clnt
->proto_version
= p9_proto_legacy
;
160 ret
= get_protocol_version(&args
[0]);
162 goto free_and_return
;
163 clnt
->proto_version
= ret
;
176 * p9_tag_alloc - lookup/allocate a request by tag
177 * @c: client session to lookup tag within
178 * @tag: numeric id for transaction
180 * this is a simple array lookup, but will grow the
181 * request_slots as necessary to accomodate transaction
182 * ids which did not previously have a slot.
184 * this code relies on the client spinlock to manage locks, its
185 * possible we should switch to something else, but I'd rather
186 * stick with something low-overhead for the common case.
190 static struct p9_req_t
*p9_tag_alloc(struct p9_client
*c
, u16 tag
)
194 struct p9_req_t
*req
;
196 /* This looks up the original request by tag so we know which
197 * buffer to read the data into */
200 if (tag
>= c
->max_tag
) {
201 spin_lock_irqsave(&c
->lock
, flags
);
202 /* check again since original check was outside of lock */
203 while (tag
>= c
->max_tag
) {
204 row
= (tag
/ P9_ROW_MAXTAG
);
205 c
->reqs
[row
] = kcalloc(P9_ROW_MAXTAG
,
206 sizeof(struct p9_req_t
), GFP_ATOMIC
);
209 printk(KERN_ERR
"Couldn't grow tag array\n");
210 spin_unlock_irqrestore(&c
->lock
, flags
);
211 return ERR_PTR(-ENOMEM
);
213 for (col
= 0; col
< P9_ROW_MAXTAG
; col
++) {
214 c
->reqs
[row
][col
].status
= REQ_STATUS_IDLE
;
215 c
->reqs
[row
][col
].tc
= NULL
;
217 c
->max_tag
+= P9_ROW_MAXTAG
;
219 spin_unlock_irqrestore(&c
->lock
, flags
);
221 row
= tag
/ P9_ROW_MAXTAG
;
222 col
= tag
% P9_ROW_MAXTAG
;
224 req
= &c
->reqs
[row
][col
];
226 req
->wq
= kmalloc(sizeof(wait_queue_head_t
), GFP_KERNEL
);
228 printk(KERN_ERR
"Couldn't grow tag array\n");
229 return ERR_PTR(-ENOMEM
);
231 init_waitqueue_head(req
->wq
);
232 req
->tc
= kmalloc(sizeof(struct p9_fcall
)+c
->msize
,
234 req
->rc
= kmalloc(sizeof(struct p9_fcall
)+c
->msize
,
236 if ((!req
->tc
) || (!req
->rc
)) {
237 printk(KERN_ERR
"Couldn't grow tag array\n");
241 req
->tc
= req
->rc
= NULL
;
243 return ERR_PTR(-ENOMEM
);
245 req
->tc
->sdata
= (char *) req
->tc
+ sizeof(struct p9_fcall
);
246 req
->tc
->capacity
= c
->msize
;
247 req
->rc
->sdata
= (char *) req
->rc
+ sizeof(struct p9_fcall
);
248 req
->rc
->capacity
= c
->msize
;
251 p9pdu_reset(req
->tc
);
252 p9pdu_reset(req
->rc
);
254 req
->tc
->tag
= tag
-1;
255 req
->status
= REQ_STATUS_ALLOC
;
257 return &c
->reqs
[row
][col
];
261 * p9_tag_lookup - lookup a request by tag
262 * @c: client session to lookup tag within
263 * @tag: numeric id for transaction
267 struct p9_req_t
*p9_tag_lookup(struct p9_client
*c
, u16 tag
)
271 /* This looks up the original request by tag so we know which
272 * buffer to read the data into */
275 BUG_ON(tag
>= c
->max_tag
);
277 row
= tag
/ P9_ROW_MAXTAG
;
278 col
= tag
% P9_ROW_MAXTAG
;
280 return &c
->reqs
[row
][col
];
282 EXPORT_SYMBOL(p9_tag_lookup
);
285 * p9_tag_init - setup tags structure and contents
286 * @c: v9fs client struct
288 * This initializes the tags structure for each client instance.
292 static int p9_tag_init(struct p9_client
*c
)
296 c
->tagpool
= p9_idpool_create();
297 if (IS_ERR(c
->tagpool
)) {
298 err
= PTR_ERR(c
->tagpool
);
303 p9_idpool_get(c
->tagpool
); /* reserve tag 0 */
311 * p9_tag_cleanup - cleans up tags structure and reclaims resources
312 * @c: v9fs client struct
314 * This frees resources associated with the tags structure
317 static void p9_tag_cleanup(struct p9_client
*c
)
321 /* check to insure all requests are idle */
322 for (row
= 0; row
< (c
->max_tag
/P9_ROW_MAXTAG
); row
++) {
323 for (col
= 0; col
< P9_ROW_MAXTAG
; col
++) {
324 if (c
->reqs
[row
][col
].status
!= REQ_STATUS_IDLE
) {
325 P9_DPRINTK(P9_DEBUG_MUX
,
326 "Attempting to cleanup non-free tag %d,%d\n",
328 /* TODO: delay execution of cleanup */
335 p9_idpool_put(0, c
->tagpool
); /* free reserved tag 0 */
336 p9_idpool_destroy(c
->tagpool
);
339 /* free requests associated with tags */
340 for (row
= 0; row
< (c
->max_tag
/P9_ROW_MAXTAG
); row
++) {
341 for (col
= 0; col
< P9_ROW_MAXTAG
; col
++) {
342 kfree(c
->reqs
[row
][col
].wq
);
343 kfree(c
->reqs
[row
][col
].tc
);
344 kfree(c
->reqs
[row
][col
].rc
);
352 * p9_free_req - free a request and clean-up as necessary
354 * r: request to release
358 static void p9_free_req(struct p9_client
*c
, struct p9_req_t
*r
)
360 int tag
= r
->tc
->tag
;
361 P9_DPRINTK(P9_DEBUG_MUX
, "clnt %p req %p tag: %d\n", c
, r
, tag
);
363 r
->status
= REQ_STATUS_IDLE
;
364 if (tag
!= P9_NOTAG
&& p9_idpool_check(tag
, c
->tagpool
))
365 p9_idpool_put(tag
, c
->tagpool
);
369 * p9_client_cb - call back from transport to client
371 * req: request received
374 void p9_client_cb(struct p9_client
*c
, struct p9_req_t
*req
)
376 P9_DPRINTK(P9_DEBUG_MUX
, " tag %d\n", req
->tc
->tag
);
378 P9_DPRINTK(P9_DEBUG_MUX
, "wakeup: %d\n", req
->tc
->tag
);
380 EXPORT_SYMBOL(p9_client_cb
);
383 * p9_parse_header - parse header arguments out of a packet
384 * @pdu: packet to parse
385 * @size: size of packet
386 * @type: type of request
387 * @tag: tag of packet
388 * @rewind: set if we need to rewind offset afterwards
392 p9_parse_header(struct p9_fcall
*pdu
, int32_t *size
, int8_t *type
, int16_t *tag
,
398 int offset
= pdu
->offset
;
405 err
= p9pdu_readf(pdu
, 0, "dbw", &r_size
, &r_type
, &r_tag
);
407 goto rewind_and_exit
;
413 P9_DPRINTK(P9_DEBUG_9P
, "<<< size=%d type: %d tag: %d\n", pdu
->size
,
426 pdu
->offset
= offset
;
429 EXPORT_SYMBOL(p9_parse_header
);
432 * p9_check_errors - check 9p packet for error return and process it
433 * @c: current client instance
434 * @req: request to parse and check for error conditions
436 * returns error code if one is discovered, otherwise returns 0
438 * this will have to be more complicated if we have multiple
442 static int p9_check_errors(struct p9_client
*c
, struct p9_req_t
*req
)
447 err
= p9_parse_header(req
->rc
, NULL
, &type
, NULL
, 0);
449 P9_DPRINTK(P9_DEBUG_ERROR
, "couldn't parse header %d\n", err
);
453 if (type
== P9_RERROR
) {
457 err
= p9pdu_readf(req
->rc
, c
->proto_version
, "s?d",
460 P9_DPRINTK(P9_DEBUG_ERROR
, "couldn't parse error%d\n",
465 if (p9_is_proto_dotu(c
) ||
469 if (!err
|| !IS_ERR_VALUE(err
))
470 err
= p9_errstr2errno(ename
, strlen(ename
));
472 P9_DPRINTK(P9_DEBUG_9P
, "<<< RERROR (%d) %s\n", -ecode
, ename
);
482 * p9_client_flush - flush (cancel) a request
484 * @oldreq: request to cancel
486 * This sents a flush for a particular requests and links
487 * the flush request to the original request. The current
488 * code only supports a single flush request although the protocol
489 * allows for multiple flush requests to be sent for a single request.
493 static int p9_client_flush(struct p9_client
*c
, struct p9_req_t
*oldreq
)
495 struct p9_req_t
*req
;
499 err
= p9_parse_header(oldreq
->tc
, NULL
, NULL
, &oldtag
, 1);
503 P9_DPRINTK(P9_DEBUG_9P
, ">>> TFLUSH tag %d\n", oldtag
);
505 req
= p9_client_rpc(c
, P9_TFLUSH
, "w", oldtag
);
510 /* if we haven't received a response for oldreq,
511 remove it from the list. */
513 if (oldreq
->status
== REQ_STATUS_FLSH
)
514 list_del(&oldreq
->req_list
);
515 spin_unlock(&c
->lock
);
522 * p9_client_rpc - issue a request and wait for a response
524 * @type: type of request
525 * @fmt: protocol format string (see protocol.c)
527 * Returns request structure (which client must free using p9_free_req)
530 static struct p9_req_t
*
531 p9_client_rpc(struct p9_client
*c
, int8_t type
, const char *fmt
, ...)
535 struct p9_req_t
*req
;
539 P9_DPRINTK(P9_DEBUG_MUX
, "client %p op %d\n", c
, type
);
541 /* we allow for any status other than disconnected */
542 if (c
->status
== Disconnected
)
543 return ERR_PTR(-EIO
);
545 /* if status is begin_disconnected we allow only clunk request */
546 if ((c
->status
== BeginDisconnect
) && (type
!= P9_TCLUNK
))
547 return ERR_PTR(-EIO
);
549 if (signal_pending(current
)) {
551 clear_thread_flag(TIF_SIGPENDING
);
556 if (type
!= P9_TVERSION
) {
557 tag
= p9_idpool_get(c
->tagpool
);
559 return ERR_PTR(-ENOMEM
);
562 req
= p9_tag_alloc(c
, tag
);
566 /* marshall the data */
567 p9pdu_prepare(req
->tc
, tag
, type
);
569 err
= p9pdu_vwritef(req
->tc
, c
->proto_version
, fmt
, ap
);
571 p9pdu_finalize(req
->tc
);
573 err
= c
->trans_mod
->request(c
, req
);
575 c
->status
= Disconnected
;
579 P9_DPRINTK(P9_DEBUG_MUX
, "wait %p tag: %d\n", req
->wq
, tag
);
580 err
= wait_event_interruptible(*req
->wq
,
581 req
->status
>= REQ_STATUS_RCVD
);
582 P9_DPRINTK(P9_DEBUG_MUX
, "wait %p tag: %d returned %d\n",
585 if (req
->status
== REQ_STATUS_ERROR
) {
586 P9_DPRINTK(P9_DEBUG_ERROR
, "req_status error %d\n", req
->t_err
);
590 if ((err
== -ERESTARTSYS
) && (c
->status
== Connected
)) {
591 P9_DPRINTK(P9_DEBUG_MUX
, "flushing\n");
593 clear_thread_flag(TIF_SIGPENDING
);
595 if (c
->trans_mod
->cancel(c
, req
))
596 p9_client_flush(c
, req
);
598 /* if we received the response anyway, don't signal error */
599 if (req
->status
== REQ_STATUS_RCVD
)
604 spin_lock_irqsave(¤t
->sighand
->siglock
, flags
);
606 spin_unlock_irqrestore(¤t
->sighand
->siglock
, flags
);
612 err
= p9_check_errors(c
, req
);
614 P9_DPRINTK(P9_DEBUG_MUX
, "exit: client %p op %d\n", c
, type
);
619 P9_DPRINTK(P9_DEBUG_MUX
, "exit: client %p op %d error: %d\n", c
, type
,
625 static struct p9_fid
*p9_fid_create(struct p9_client
*clnt
)
631 P9_DPRINTK(P9_DEBUG_FID
, "clnt %p\n", clnt
);
632 fid
= kmalloc(sizeof(struct p9_fid
), GFP_KERNEL
);
634 return ERR_PTR(-ENOMEM
);
636 ret
= p9_idpool_get(clnt
->fidpool
);
643 memset(&fid
->qid
, 0, sizeof(struct p9_qid
));
645 fid
->uid
= current_fsuid();
648 spin_lock_irqsave(&clnt
->lock
, flags
);
649 list_add(&fid
->flist
, &clnt
->fidlist
);
650 spin_unlock_irqrestore(&clnt
->lock
, flags
);
659 static void p9_fid_destroy(struct p9_fid
*fid
)
661 struct p9_client
*clnt
;
664 P9_DPRINTK(P9_DEBUG_FID
, "fid %d\n", fid
->fid
);
666 p9_idpool_put(fid
->fid
, clnt
->fidpool
);
667 spin_lock_irqsave(&clnt
->lock
, flags
);
668 list_del(&fid
->flist
);
669 spin_unlock_irqrestore(&clnt
->lock
, flags
);
674 int p9_client_version(struct p9_client
*c
)
677 struct p9_req_t
*req
;
681 P9_DPRINTK(P9_DEBUG_9P
, ">>> TVERSION msize %d protocol %d\n",
682 c
->msize
, c
->proto_version
);
684 switch (c
->proto_version
) {
686 req
= p9_client_rpc(c
, P9_TVERSION
, "ds",
687 c
->msize
, "9P2000.L");
690 req
= p9_client_rpc(c
, P9_TVERSION
, "ds",
691 c
->msize
, "9P2000.u");
693 case p9_proto_legacy
:
694 req
= p9_client_rpc(c
, P9_TVERSION
, "ds",
705 err
= p9pdu_readf(req
->rc
, c
->proto_version
, "ds", &msize
, &version
);
707 P9_DPRINTK(P9_DEBUG_9P
, "version error %d\n", err
);
708 p9pdu_dump(1, req
->rc
);
712 P9_DPRINTK(P9_DEBUG_9P
, "<<< RVERSION msize %d %s\n", msize
, version
);
713 if (!strncmp(version
, "9P2000.L", 8))
714 c
->proto_version
= p9_proto_2000L
;
715 else if (!strncmp(version
, "9P2000.u", 8))
716 c
->proto_version
= p9_proto_2000u
;
717 else if (!strncmp(version
, "9P2000", 6))
718 c
->proto_version
= p9_proto_legacy
;
724 if (msize
< c
->msize
)
733 EXPORT_SYMBOL(p9_client_version
);
735 struct p9_client
*p9_client_create(const char *dev_name
, char *options
)
738 struct p9_client
*clnt
;
741 clnt
= kmalloc(sizeof(struct p9_client
), GFP_KERNEL
);
743 return ERR_PTR(-ENOMEM
);
745 clnt
->trans_mod
= NULL
;
747 spin_lock_init(&clnt
->lock
);
748 INIT_LIST_HEAD(&clnt
->fidlist
);
752 err
= parse_opts(options
, clnt
);
756 if (!clnt
->trans_mod
)
757 clnt
->trans_mod
= v9fs_get_default_trans();
759 if (clnt
->trans_mod
== NULL
) {
760 err
= -EPROTONOSUPPORT
;
761 P9_DPRINTK(P9_DEBUG_ERROR
,
762 "No transport defined or default transport\n");
766 clnt
->fidpool
= p9_idpool_create();
767 if (IS_ERR(clnt
->fidpool
)) {
768 err
= PTR_ERR(clnt
->fidpool
);
769 clnt
->fidpool
= NULL
;
773 P9_DPRINTK(P9_DEBUG_MUX
, "clnt %p trans %p msize %d protocol %d\n",
774 clnt
, clnt
->trans_mod
, clnt
->msize
, clnt
->proto_version
);
776 err
= clnt
->trans_mod
->create(clnt
, dev_name
, options
);
778 goto destroy_fidpool
;
780 if ((clnt
->msize
+P9_IOHDRSZ
) > clnt
->trans_mod
->maxsize
)
781 clnt
->msize
= clnt
->trans_mod
->maxsize
-P9_IOHDRSZ
;
783 err
= p9_client_version(clnt
);
790 clnt
->trans_mod
->close(clnt
);
792 p9_idpool_destroy(clnt
->fidpool
);
794 v9fs_put_trans(clnt
->trans_mod
);
799 EXPORT_SYMBOL(p9_client_create
);
801 void p9_client_destroy(struct p9_client
*clnt
)
803 struct p9_fid
*fid
, *fidptr
;
805 P9_DPRINTK(P9_DEBUG_MUX
, "clnt %p\n", clnt
);
808 clnt
->trans_mod
->close(clnt
);
810 v9fs_put_trans(clnt
->trans_mod
);
812 list_for_each_entry_safe(fid
, fidptr
, &clnt
->fidlist
, flist
) {
813 printk(KERN_INFO
"Found fid %d not clunked\n", fid
->fid
);
818 p9_idpool_destroy(clnt
->fidpool
);
820 p9_tag_cleanup(clnt
);
824 EXPORT_SYMBOL(p9_client_destroy
);
826 void p9_client_disconnect(struct p9_client
*clnt
)
828 P9_DPRINTK(P9_DEBUG_9P
, "clnt %p\n", clnt
);
829 clnt
->status
= Disconnected
;
831 EXPORT_SYMBOL(p9_client_disconnect
);
833 void p9_client_begin_disconnect(struct p9_client
*clnt
)
835 P9_DPRINTK(P9_DEBUG_9P
, "clnt %p\n", clnt
);
836 clnt
->status
= BeginDisconnect
;
838 EXPORT_SYMBOL(p9_client_begin_disconnect
);
840 struct p9_fid
*p9_client_attach(struct p9_client
*clnt
, struct p9_fid
*afid
,
841 char *uname
, u32 n_uname
, char *aname
)
844 struct p9_req_t
*req
;
848 P9_DPRINTK(P9_DEBUG_9P
, ">>> TATTACH afid %d uname %s aname %s\n",
849 afid
? afid
->fid
: -1, uname
, aname
);
852 fid
= p9_fid_create(clnt
);
859 req
= p9_client_rpc(clnt
, P9_TATTACH
, "ddss?d", fid
->fid
,
860 afid
? afid
->fid
: P9_NOFID
, uname
, aname
, n_uname
);
866 err
= p9pdu_readf(req
->rc
, clnt
->proto_version
, "Q", &qid
);
868 p9pdu_dump(1, req
->rc
);
869 p9_free_req(clnt
, req
);
873 P9_DPRINTK(P9_DEBUG_9P
, "<<< RATTACH qid %x.%llx.%x\n",
875 (unsigned long long)qid
.path
,
878 memmove(&fid
->qid
, &qid
, sizeof(struct p9_qid
));
880 p9_free_req(clnt
, req
);
888 EXPORT_SYMBOL(p9_client_attach
);
891 p9_client_auth(struct p9_client
*clnt
, char *uname
, u32 n_uname
, char *aname
)
894 struct p9_req_t
*req
;
898 P9_DPRINTK(P9_DEBUG_9P
, ">>> TAUTH uname %s aname %s\n", uname
, aname
);
901 afid
= p9_fid_create(clnt
);
908 req
= p9_client_rpc(clnt
, P9_TAUTH
, "dss?d",
909 afid
? afid
->fid
: P9_NOFID
, uname
, aname
, n_uname
);
915 err
= p9pdu_readf(req
->rc
, clnt
->proto_version
, "Q", &qid
);
917 p9pdu_dump(1, req
->rc
);
918 p9_free_req(clnt
, req
);
922 P9_DPRINTK(P9_DEBUG_9P
, "<<< RAUTH qid %x.%llx.%x\n",
924 (unsigned long long)qid
.path
,
927 memmove(&afid
->qid
, &qid
, sizeof(struct p9_qid
));
928 p9_free_req(clnt
, req
);
933 p9_fid_destroy(afid
);
936 EXPORT_SYMBOL(p9_client_auth
);
938 struct p9_fid
*p9_client_walk(struct p9_fid
*oldfid
, int nwname
, char **wnames
,
942 struct p9_client
*clnt
;
944 struct p9_qid
*wqids
;
945 struct p9_req_t
*req
;
946 int16_t nwqids
, count
;
952 fid
= p9_fid_create(clnt
);
959 fid
->uid
= oldfid
->uid
;
964 P9_DPRINTK(P9_DEBUG_9P
, ">>> TWALK fids %d,%d nwname %d wname[0] %s\n",
965 oldfid
->fid
, fid
->fid
, nwname
, wnames
? wnames
[0] : NULL
);
967 req
= p9_client_rpc(clnt
, P9_TWALK
, "ddT", oldfid
->fid
, fid
->fid
,
974 err
= p9pdu_readf(req
->rc
, clnt
->proto_version
, "R", &nwqids
, &wqids
);
976 p9pdu_dump(1, req
->rc
);
977 p9_free_req(clnt
, req
);
980 p9_free_req(clnt
, req
);
982 P9_DPRINTK(P9_DEBUG_9P
, "<<< RWALK nwqid %d:\n", nwqids
);
984 if (nwqids
!= nwname
) {
989 for (count
= 0; count
< nwqids
; count
++)
990 P9_DPRINTK(P9_DEBUG_9P
, "<<< [%d] %x.%llx.%x\n",
991 count
, wqids
[count
].type
,
992 (unsigned long long)wqids
[count
].path
,
993 wqids
[count
].version
);
996 memmove(&fid
->qid
, &wqids
[nwqids
- 1], sizeof(struct p9_qid
));
998 fid
->qid
= oldfid
->qid
;
1005 p9_client_clunk(fid
);
1009 if (fid
&& (fid
!= oldfid
))
1010 p9_fid_destroy(fid
);
1012 return ERR_PTR(err
);
1014 EXPORT_SYMBOL(p9_client_walk
);
1016 int p9_client_open(struct p9_fid
*fid
, int mode
)
1019 struct p9_client
*clnt
;
1020 struct p9_req_t
*req
;
1025 P9_DPRINTK(P9_DEBUG_9P
, ">>> %s fid %d mode %d\n",
1026 p9_is_proto_dotl(clnt
) ? "TLOPEN" : "TOPEN", fid
->fid
, mode
);
1029 if (fid
->mode
!= -1)
1032 if (p9_is_proto_dotl(clnt
))
1033 req
= p9_client_rpc(clnt
, P9_TLOPEN
, "dd", fid
->fid
, mode
);
1035 req
= p9_client_rpc(clnt
, P9_TOPEN
, "db", fid
->fid
, mode
);
1041 err
= p9pdu_readf(req
->rc
, clnt
->proto_version
, "Qd", &qid
, &iounit
);
1043 p9pdu_dump(1, req
->rc
);
1044 goto free_and_error
;
1047 P9_DPRINTK(P9_DEBUG_9P
, "<<< %s qid %x.%llx.%x iounit %x\n",
1048 p9_is_proto_dotl(clnt
) ? "RLOPEN" : "ROPEN", qid
.type
,
1049 (unsigned long long)qid
.path
, qid
.version
, iounit
);
1052 fid
->iounit
= iounit
;
1055 p9_free_req(clnt
, req
);
1059 EXPORT_SYMBOL(p9_client_open
);
1061 int p9_client_create_dotl(struct p9_fid
*ofid
, char *name
, u32 flags
, u32 mode
,
1062 gid_t gid
, struct p9_qid
*qid
)
1065 struct p9_client
*clnt
;
1066 struct p9_req_t
*req
;
1069 P9_DPRINTK(P9_DEBUG_9P
,
1070 ">>> TLCREATE fid %d name %s flags %d mode %d gid %d\n",
1071 ofid
->fid
, name
, flags
, mode
, gid
);
1074 if (ofid
->mode
!= -1)
1077 req
= p9_client_rpc(clnt
, P9_TLCREATE
, "dsddd", ofid
->fid
, name
, flags
,
1084 err
= p9pdu_readf(req
->rc
, clnt
->proto_version
, "Qd", qid
, &iounit
);
1086 p9pdu_dump(1, req
->rc
);
1087 goto free_and_error
;
1090 P9_DPRINTK(P9_DEBUG_9P
, "<<< RLCREATE qid %x.%llx.%x iounit %x\n",
1092 (unsigned long long)qid
->path
,
1093 qid
->version
, iounit
);
1096 ofid
->iounit
= iounit
;
1099 p9_free_req(clnt
, req
);
1103 EXPORT_SYMBOL(p9_client_create_dotl
);
1105 int p9_client_fcreate(struct p9_fid
*fid
, char *name
, u32 perm
, int mode
,
1109 struct p9_client
*clnt
;
1110 struct p9_req_t
*req
;
1114 P9_DPRINTK(P9_DEBUG_9P
, ">>> TCREATE fid %d name %s perm %d mode %d\n",
1115 fid
->fid
, name
, perm
, mode
);
1119 if (fid
->mode
!= -1)
1122 req
= p9_client_rpc(clnt
, P9_TCREATE
, "dsdb?s", fid
->fid
, name
, perm
,
1129 err
= p9pdu_readf(req
->rc
, clnt
->proto_version
, "Qd", &qid
, &iounit
);
1131 p9pdu_dump(1, req
->rc
);
1132 goto free_and_error
;
1135 P9_DPRINTK(P9_DEBUG_9P
, "<<< RCREATE qid %x.%llx.%x iounit %x\n",
1137 (unsigned long long)qid
.path
,
1138 qid
.version
, iounit
);
1141 fid
->iounit
= iounit
;
1144 p9_free_req(clnt
, req
);
1148 EXPORT_SYMBOL(p9_client_fcreate
);
1150 int p9_client_symlink(struct p9_fid
*dfid
, char *name
, char *symtgt
, gid_t gid
,
1154 struct p9_client
*clnt
;
1155 struct p9_req_t
*req
;
1157 P9_DPRINTK(P9_DEBUG_9P
, ">>> TSYMLINK dfid %d name %s symtgt %s\n",
1158 dfid
->fid
, name
, symtgt
);
1161 req
= p9_client_rpc(clnt
, P9_TSYMLINK
, "dssd", dfid
->fid
, name
, symtgt
,
1168 err
= p9pdu_readf(req
->rc
, clnt
->proto_version
, "Q", qid
);
1170 p9pdu_dump(1, req
->rc
);
1171 goto free_and_error
;
1174 P9_DPRINTK(P9_DEBUG_9P
, "<<< RSYMLINK qid %x.%llx.%x\n",
1175 qid
->type
, (unsigned long long)qid
->path
, qid
->version
);
1178 p9_free_req(clnt
, req
);
1182 EXPORT_SYMBOL(p9_client_symlink
);
1184 int p9_client_link(struct p9_fid
*dfid
, struct p9_fid
*oldfid
, char *newname
)
1186 struct p9_client
*clnt
;
1187 struct p9_req_t
*req
;
1189 P9_DPRINTK(P9_DEBUG_9P
, ">>> TLINK dfid %d oldfid %d newname %s\n",
1190 dfid
->fid
, oldfid
->fid
, newname
);
1192 req
= p9_client_rpc(clnt
, P9_TLINK
, "dds", dfid
->fid
, oldfid
->fid
,
1195 return PTR_ERR(req
);
1197 P9_DPRINTK(P9_DEBUG_9P
, "<<< RLINK\n");
1198 p9_free_req(clnt
, req
);
1201 EXPORT_SYMBOL(p9_client_link
);
1203 int p9_client_clunk(struct p9_fid
*fid
)
1206 struct p9_client
*clnt
;
1207 struct p9_req_t
*req
;
1209 P9_DPRINTK(P9_DEBUG_9P
, ">>> TCLUNK fid %d\n", fid
->fid
);
1213 req
= p9_client_rpc(clnt
, P9_TCLUNK
, "d", fid
->fid
);
1219 P9_DPRINTK(P9_DEBUG_9P
, "<<< RCLUNK fid %d\n", fid
->fid
);
1221 p9_free_req(clnt
, req
);
1222 p9_fid_destroy(fid
);
1227 EXPORT_SYMBOL(p9_client_clunk
);
1229 int p9_client_remove(struct p9_fid
*fid
)
1232 struct p9_client
*clnt
;
1233 struct p9_req_t
*req
;
1235 P9_DPRINTK(P9_DEBUG_9P
, ">>> TREMOVE fid %d\n", fid
->fid
);
1239 req
= p9_client_rpc(clnt
, P9_TREMOVE
, "d", fid
->fid
);
1245 P9_DPRINTK(P9_DEBUG_9P
, "<<< RREMOVE fid %d\n", fid
->fid
);
1247 p9_free_req(clnt
, req
);
1249 p9_fid_destroy(fid
);
1252 EXPORT_SYMBOL(p9_client_remove
);
1255 p9_client_read(struct p9_fid
*fid
, char *data
, char __user
*udata
, u64 offset
,
1258 int err
, rsize
, total
;
1259 struct p9_client
*clnt
;
1260 struct p9_req_t
*req
;
1263 P9_DPRINTK(P9_DEBUG_9P
, ">>> TREAD fid %d offset %llu %d\n", fid
->fid
,
1264 (long long unsigned) offset
, count
);
1269 rsize
= fid
->iounit
;
1270 if (!rsize
|| rsize
> clnt
->msize
-P9_IOHDRSZ
)
1271 rsize
= clnt
->msize
- P9_IOHDRSZ
;
1276 req
= p9_client_rpc(clnt
, P9_TREAD
, "dqd", fid
->fid
, offset
, rsize
);
1282 err
= p9pdu_readf(req
->rc
, clnt
->proto_version
, "D", &count
, &dataptr
);
1284 p9pdu_dump(1, req
->rc
);
1285 goto free_and_error
;
1288 P9_DPRINTK(P9_DEBUG_9P
, "<<< RREAD count %d\n", count
);
1291 memmove(data
, dataptr
, count
);
1295 err
= copy_to_user(udata
, dataptr
, count
);
1298 goto free_and_error
;
1302 p9_free_req(clnt
, req
);
1306 p9_free_req(clnt
, req
);
1310 EXPORT_SYMBOL(p9_client_read
);
1313 p9_client_write(struct p9_fid
*fid
, char *data
, const char __user
*udata
,
1314 u64 offset
, u32 count
)
1316 int err
, rsize
, total
;
1317 struct p9_client
*clnt
;
1318 struct p9_req_t
*req
;
1320 P9_DPRINTK(P9_DEBUG_9P
, ">>> TWRITE fid %d offset %llu count %d\n",
1321 fid
->fid
, (long long unsigned) offset
, count
);
1326 rsize
= fid
->iounit
;
1327 if (!rsize
|| rsize
> clnt
->msize
-P9_IOHDRSZ
)
1328 rsize
= clnt
->msize
- P9_IOHDRSZ
;
1333 req
= p9_client_rpc(clnt
, P9_TWRITE
, "dqD", fid
->fid
, offset
,
1336 req
= p9_client_rpc(clnt
, P9_TWRITE
, "dqU", fid
->fid
, offset
,
1343 err
= p9pdu_readf(req
->rc
, clnt
->proto_version
, "d", &count
);
1345 p9pdu_dump(1, req
->rc
);
1346 goto free_and_error
;
1349 P9_DPRINTK(P9_DEBUG_9P
, "<<< RWRITE count %d\n", count
);
1351 p9_free_req(clnt
, req
);
1355 p9_free_req(clnt
, req
);
1359 EXPORT_SYMBOL(p9_client_write
);
1361 struct p9_wstat
*p9_client_stat(struct p9_fid
*fid
)
1364 struct p9_client
*clnt
;
1365 struct p9_wstat
*ret
= kmalloc(sizeof(struct p9_wstat
), GFP_KERNEL
);
1366 struct p9_req_t
*req
;
1369 P9_DPRINTK(P9_DEBUG_9P
, ">>> TSTAT fid %d\n", fid
->fid
);
1372 return ERR_PTR(-ENOMEM
);
1377 req
= p9_client_rpc(clnt
, P9_TSTAT
, "d", fid
->fid
);
1383 err
= p9pdu_readf(req
->rc
, clnt
->proto_version
, "wS", &ignored
, ret
);
1385 p9pdu_dump(1, req
->rc
);
1386 p9_free_req(clnt
, req
);
1390 P9_DPRINTK(P9_DEBUG_9P
,
1391 "<<< RSTAT sz=%x type=%x dev=%x qid=%x.%llx.%x\n"
1392 "<<< mode=%8.8x atime=%8.8x mtime=%8.8x length=%llx\n"
1393 "<<< name=%s uid=%s gid=%s muid=%s extension=(%s)\n"
1394 "<<< uid=%d gid=%d n_muid=%d\n",
1395 ret
->size
, ret
->type
, ret
->dev
, ret
->qid
.type
,
1396 (unsigned long long)ret
->qid
.path
, ret
->qid
.version
, ret
->mode
,
1397 ret
->atime
, ret
->mtime
, (unsigned long long)ret
->length
,
1398 ret
->name
, ret
->uid
, ret
->gid
, ret
->muid
, ret
->extension
,
1399 ret
->n_uid
, ret
->n_gid
, ret
->n_muid
);
1401 p9_free_req(clnt
, req
);
1406 return ERR_PTR(err
);
1408 EXPORT_SYMBOL(p9_client_stat
);
1410 struct p9_stat_dotl
*p9_client_getattr_dotl(struct p9_fid
*fid
,
1414 struct p9_client
*clnt
;
1415 struct p9_stat_dotl
*ret
= kmalloc(sizeof(struct p9_stat_dotl
),
1417 struct p9_req_t
*req
;
1419 P9_DPRINTK(P9_DEBUG_9P
, ">>> TGETATTR fid %d, request_mask %lld\n",
1420 fid
->fid
, request_mask
);
1423 return ERR_PTR(-ENOMEM
);
1428 req
= p9_client_rpc(clnt
, P9_TGETATTR
, "dq", fid
->fid
, request_mask
);
1434 err
= p9pdu_readf(req
->rc
, clnt
->proto_version
, "A", ret
);
1436 p9pdu_dump(1, req
->rc
);
1437 p9_free_req(clnt
, req
);
1441 P9_DPRINTK(P9_DEBUG_9P
,
1442 "<<< RGETATTR st_result_mask=%lld\n"
1443 "<<< qid=%x.%llx.%x\n"
1444 "<<< st_mode=%8.8x st_nlink=%llu\n"
1445 "<<< st_uid=%d st_gid=%d\n"
1446 "<<< st_rdev=%llx st_size=%llx st_blksize=%llu st_blocks=%llu\n"
1447 "<<< st_atime_sec=%lld st_atime_nsec=%lld\n"
1448 "<<< st_mtime_sec=%lld st_mtime_nsec=%lld\n"
1449 "<<< st_ctime_sec=%lld st_ctime_nsec=%lld\n"
1450 "<<< st_btime_sec=%lld st_btime_nsec=%lld\n"
1451 "<<< st_gen=%lld st_data_version=%lld",
1452 ret
->st_result_mask
, ret
->qid
.type
, ret
->qid
.path
,
1453 ret
->qid
.version
, ret
->st_mode
, ret
->st_nlink
, ret
->st_uid
,
1454 ret
->st_gid
, ret
->st_rdev
, ret
->st_size
, ret
->st_blksize
,
1455 ret
->st_blocks
, ret
->st_atime_sec
, ret
->st_atime_nsec
,
1456 ret
->st_mtime_sec
, ret
->st_mtime_nsec
, ret
->st_ctime_sec
,
1457 ret
->st_ctime_nsec
, ret
->st_btime_sec
, ret
->st_btime_nsec
,
1458 ret
->st_gen
, ret
->st_data_version
);
1460 p9_free_req(clnt
, req
);
1465 return ERR_PTR(err
);
1467 EXPORT_SYMBOL(p9_client_getattr_dotl
);
1469 static int p9_client_statsize(struct p9_wstat
*wst
, int proto_version
)
1473 /* NOTE: size shouldn't include its own length */
1474 /* size[2] type[2] dev[4] qid[13] */
1475 /* mode[4] atime[4] mtime[4] length[8]*/
1476 /* name[s] uid[s] gid[s] muid[s] */
1477 ret
= 2+4+13+4+4+4+8+2+2+2+2;
1480 ret
+= strlen(wst
->name
);
1482 ret
+= strlen(wst
->uid
);
1484 ret
+= strlen(wst
->gid
);
1486 ret
+= strlen(wst
->muid
);
1488 if ((proto_version
== p9_proto_2000u
) ||
1489 (proto_version
== p9_proto_2000L
)) {
1490 ret
+= 2+4+4+4; /* extension[s] n_uid[4] n_gid[4] n_muid[4] */
1492 ret
+= strlen(wst
->extension
);
1498 int p9_client_wstat(struct p9_fid
*fid
, struct p9_wstat
*wst
)
1501 struct p9_req_t
*req
;
1502 struct p9_client
*clnt
;
1506 wst
->size
= p9_client_statsize(wst
, clnt
->proto_version
);
1507 P9_DPRINTK(P9_DEBUG_9P
, ">>> TWSTAT fid %d\n", fid
->fid
);
1508 P9_DPRINTK(P9_DEBUG_9P
,
1509 " sz=%x type=%x dev=%x qid=%x.%llx.%x\n"
1510 " mode=%8.8x atime=%8.8x mtime=%8.8x length=%llx\n"
1511 " name=%s uid=%s gid=%s muid=%s extension=(%s)\n"
1512 " uid=%d gid=%d n_muid=%d\n",
1513 wst
->size
, wst
->type
, wst
->dev
, wst
->qid
.type
,
1514 (unsigned long long)wst
->qid
.path
, wst
->qid
.version
, wst
->mode
,
1515 wst
->atime
, wst
->mtime
, (unsigned long long)wst
->length
,
1516 wst
->name
, wst
->uid
, wst
->gid
, wst
->muid
, wst
->extension
,
1517 wst
->n_uid
, wst
->n_gid
, wst
->n_muid
);
1519 req
= p9_client_rpc(clnt
, P9_TWSTAT
, "dwS", fid
->fid
, wst
->size
+2, wst
);
1525 P9_DPRINTK(P9_DEBUG_9P
, "<<< RWSTAT fid %d\n", fid
->fid
);
1527 p9_free_req(clnt
, req
);
1531 EXPORT_SYMBOL(p9_client_wstat
);
1533 int p9_client_setattr(struct p9_fid
*fid
, struct p9_iattr_dotl
*p9attr
)
1536 struct p9_req_t
*req
;
1537 struct p9_client
*clnt
;
1541 P9_DPRINTK(P9_DEBUG_9P
, ">>> TSETATTR fid %d\n", fid
->fid
);
1542 P9_DPRINTK(P9_DEBUG_9P
,
1543 " valid=%x mode=%x uid=%d gid=%d size=%lld\n"
1544 " atime_sec=%lld atime_nsec=%lld\n"
1545 " mtime_sec=%lld mtime_nsec=%lld\n",
1546 p9attr
->valid
, p9attr
->mode
, p9attr
->uid
, p9attr
->gid
,
1547 p9attr
->size
, p9attr
->atime_sec
, p9attr
->atime_nsec
,
1548 p9attr
->mtime_sec
, p9attr
->mtime_nsec
);
1550 req
= p9_client_rpc(clnt
, P9_TSETATTR
, "dI", fid
->fid
, p9attr
);
1556 P9_DPRINTK(P9_DEBUG_9P
, "<<< RSETATTR fid %d\n", fid
->fid
);
1557 p9_free_req(clnt
, req
);
1561 EXPORT_SYMBOL(p9_client_setattr
);
1563 int p9_client_statfs(struct p9_fid
*fid
, struct p9_rstatfs
*sb
)
1566 struct p9_req_t
*req
;
1567 struct p9_client
*clnt
;
1572 P9_DPRINTK(P9_DEBUG_9P
, ">>> TSTATFS fid %d\n", fid
->fid
);
1574 req
= p9_client_rpc(clnt
, P9_TSTATFS
, "d", fid
->fid
);
1580 err
= p9pdu_readf(req
->rc
, clnt
->proto_version
, "ddqqqqqqd", &sb
->type
,
1581 &sb
->bsize
, &sb
->blocks
, &sb
->bfree
, &sb
->bavail
,
1582 &sb
->files
, &sb
->ffree
, &sb
->fsid
, &sb
->namelen
);
1584 p9pdu_dump(1, req
->rc
);
1585 p9_free_req(clnt
, req
);
1589 P9_DPRINTK(P9_DEBUG_9P
, "<<< RSTATFS fid %d type 0x%lx bsize %ld "
1590 "blocks %llu bfree %llu bavail %llu files %llu ffree %llu "
1591 "fsid %llu namelen %ld\n",
1592 fid
->fid
, (long unsigned int)sb
->type
, (long int)sb
->bsize
,
1593 sb
->blocks
, sb
->bfree
, sb
->bavail
, sb
->files
, sb
->ffree
,
1594 sb
->fsid
, (long int)sb
->namelen
);
1596 p9_free_req(clnt
, req
);
1600 EXPORT_SYMBOL(p9_client_statfs
);
1602 int p9_client_rename(struct p9_fid
*fid
, struct p9_fid
*newdirfid
, char *name
)
1605 struct p9_req_t
*req
;
1606 struct p9_client
*clnt
;
1611 P9_DPRINTK(P9_DEBUG_9P
, ">>> TRENAME fid %d newdirfid %d name %s\n",
1612 fid
->fid
, newdirfid
->fid
, name
);
1614 req
= p9_client_rpc(clnt
, P9_TRENAME
, "dds", fid
->fid
,
1615 newdirfid
->fid
, name
);
1621 P9_DPRINTK(P9_DEBUG_9P
, "<<< RRENAME fid %d\n", fid
->fid
);
1623 p9_free_req(clnt
, req
);
1627 EXPORT_SYMBOL(p9_client_rename
);
1630 * An xattrwalk without @attr_name gives the fid for the lisxattr namespace
1632 struct p9_fid
*p9_client_xattrwalk(struct p9_fid
*file_fid
,
1633 const char *attr_name
, u64
*attr_size
)
1636 struct p9_req_t
*req
;
1637 struct p9_client
*clnt
;
1638 struct p9_fid
*attr_fid
;
1641 clnt
= file_fid
->clnt
;
1642 attr_fid
= p9_fid_create(clnt
);
1643 if (IS_ERR(attr_fid
)) {
1644 err
= PTR_ERR(attr_fid
);
1648 P9_DPRINTK(P9_DEBUG_9P
,
1649 ">>> TXATTRWALK file_fid %d, attr_fid %d name %s\n",
1650 file_fid
->fid
, attr_fid
->fid
, attr_name
);
1652 req
= p9_client_rpc(clnt
, P9_TXATTRWALK
, "dds",
1653 file_fid
->fid
, attr_fid
->fid
, attr_name
);
1658 err
= p9pdu_readf(req
->rc
, clnt
->proto_version
, "q", attr_size
);
1660 p9pdu_dump(1, req
->rc
);
1661 p9_free_req(clnt
, req
);
1664 p9_free_req(clnt
, req
);
1665 P9_DPRINTK(P9_DEBUG_9P
, "<<< RXATTRWALK fid %d size %llu\n",
1666 attr_fid
->fid
, *attr_size
);
1669 p9_client_clunk(attr_fid
);
1672 if (attr_fid
&& (attr_fid
!= file_fid
))
1673 p9_fid_destroy(attr_fid
);
1675 return ERR_PTR(err
);
1677 EXPORT_SYMBOL_GPL(p9_client_xattrwalk
);
1679 int p9_client_xattrcreate(struct p9_fid
*fid
, const char *name
,
1680 u64 attr_size
, int flags
)
1683 struct p9_req_t
*req
;
1684 struct p9_client
*clnt
;
1686 P9_DPRINTK(P9_DEBUG_9P
,
1687 ">>> TXATTRCREATE fid %d name %s size %lld flag %d\n",
1688 fid
->fid
, name
, (long long)attr_size
, flags
);
1691 req
= p9_client_rpc(clnt
, P9_TXATTRCREATE
, "dsqd",
1692 fid
->fid
, name
, attr_size
, flags
);
1697 P9_DPRINTK(P9_DEBUG_9P
, "<<< RXATTRCREATE fid %d\n", fid
->fid
);
1698 p9_free_req(clnt
, req
);
1702 EXPORT_SYMBOL_GPL(p9_client_xattrcreate
);
1704 int p9_client_readdir(struct p9_fid
*fid
, char *data
, u32 count
, u64 offset
)
1706 int err
, rsize
, total
;
1707 struct p9_client
*clnt
;
1708 struct p9_req_t
*req
;
1711 P9_DPRINTK(P9_DEBUG_9P
, ">>> TREADDIR fid %d offset %llu count %d\n",
1712 fid
->fid
, (long long unsigned) offset
, count
);
1718 rsize
= fid
->iounit
;
1719 if (!rsize
|| rsize
> clnt
->msize
-P9_READDIRHDRSZ
)
1720 rsize
= clnt
->msize
- P9_READDIRHDRSZ
;
1725 req
= p9_client_rpc(clnt
, P9_TREADDIR
, "dqd", fid
->fid
, offset
, rsize
);
1731 err
= p9pdu_readf(req
->rc
, clnt
->proto_version
, "D", &count
, &dataptr
);
1733 p9pdu_dump(1, req
->rc
);
1734 goto free_and_error
;
1737 P9_DPRINTK(P9_DEBUG_9P
, "<<< RREADDIR count %d\n", count
);
1740 memmove(data
, dataptr
, count
);
1742 p9_free_req(clnt
, req
);
1746 p9_free_req(clnt
, req
);
1750 EXPORT_SYMBOL(p9_client_readdir
);
1752 int p9_client_mknod_dotl(struct p9_fid
*fid
, char *name
, int mode
,
1753 dev_t rdev
, gid_t gid
, struct p9_qid
*qid
)
1756 struct p9_client
*clnt
;
1757 struct p9_req_t
*req
;
1761 P9_DPRINTK(P9_DEBUG_9P
, ">>> TMKNOD fid %d name %s mode %d major %d "
1762 "minor %d\n", fid
->fid
, name
, mode
, MAJOR(rdev
), MINOR(rdev
));
1763 req
= p9_client_rpc(clnt
, P9_TMKNOD
, "dsdddd", fid
->fid
, name
, mode
,
1764 MAJOR(rdev
), MINOR(rdev
), gid
);
1766 return PTR_ERR(req
);
1768 err
= p9pdu_readf(req
->rc
, clnt
->proto_version
, "Q", qid
);
1770 p9pdu_dump(1, req
->rc
);
1773 P9_DPRINTK(P9_DEBUG_9P
, "<<< RMKNOD qid %x.%llx.%x\n", qid
->type
,
1774 (unsigned long long)qid
->path
, qid
->version
);
1777 p9_free_req(clnt
, req
);
1781 EXPORT_SYMBOL(p9_client_mknod_dotl
);
1783 int p9_client_mkdir_dotl(struct p9_fid
*fid
, char *name
, int mode
,
1784 gid_t gid
, struct p9_qid
*qid
)
1787 struct p9_client
*clnt
;
1788 struct p9_req_t
*req
;
1792 P9_DPRINTK(P9_DEBUG_9P
, ">>> TMKDIR fid %d name %s mode %d gid %d\n",
1793 fid
->fid
, name
, mode
, gid
);
1794 req
= p9_client_rpc(clnt
, P9_TMKDIR
, "dsdd", fid
->fid
, name
, mode
,
1797 return PTR_ERR(req
);
1799 err
= p9pdu_readf(req
->rc
, clnt
->proto_version
, "Q", qid
);
1801 p9pdu_dump(1, req
->rc
);
1804 P9_DPRINTK(P9_DEBUG_9P
, "<<< RMKDIR qid %x.%llx.%x\n", qid
->type
,
1805 (unsigned long long)qid
->path
, qid
->version
);
1808 p9_free_req(clnt
, req
);
1812 EXPORT_SYMBOL(p9_client_mkdir_dotl
);