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libnfs: Don't perform operations on nfsfh after user callback
[deb_libnfs.git] / lib / libnfs.c
1 /*
2 Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU Lesser General Public License as published by
6 the Free Software Foundation; either version 2.1 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public License
15 along with this program; if not, see <http://www.gnu.org/licenses/>.
16 */
17 /*
18 * High level api to nfs filesystems
19 */
20 #ifdef HAVE_CONFIG_H
21 #include "config.h"
22 #endif
23
24 #ifdef AROS
25 #include "aros_compat.h"
26 #endif
27
28 #ifdef WIN32
29 #include "win32_compat.h"
30 #endif
31
32 #ifdef HAVE_UTIME_H
33 #include <utime.h>
34 #endif
35
36 #ifdef ANDROID
37 #define statvfs statfs
38 #endif
39
40 #define _GNU_SOURCE
41
42 #ifdef HAVE_UNISTD_H
43 #include <unistd.h>
44 #endif
45
46 #ifdef HAVE_SYS_VFS_H
47 #include <sys/vfs.h>
48 #endif
49
50 #ifdef HAVE_SYS_STATVFS_H
51 #include <sys/statvfs.h>
52 #endif
53
54 #ifdef HAVE_NETINET_IN_H
55 #include <netinet/in.h>
56 #endif
57
58 #ifdef HAVE_STRINGS_H
59 #include <strings.h>
60 #endif
61
62 #ifdef MAJOR_IN_MKDEV
63 #include <sys/mkdev.h>
64 #endif
65
66 #ifdef MAJOR_IN_SYSMACROS
67 #include <sys/sysmacros.h>
68 #endif
69
70 #include <stdio.h>
71 #include <stdarg.h>
72 #include <stdlib.h>
73 #include <string.h>
74 #include <assert.h>
75 #include <errno.h>
76 #include <sys/types.h>
77 #include <sys/stat.h>
78 #include <fcntl.h>
79 #include "libnfs-zdr.h"
80 #include "slist.h"
81 #include "libnfs.h"
82 #include "libnfs-raw.h"
83 #include "libnfs-raw-mount.h"
84 #include "libnfs-raw-nfs.h"
85 #include "libnfs-raw-portmap.h"
86 #include "libnfs-private.h"
87
88 #define MAX_DIR_CACHE 128
89 #define MAX_LINK_COUNT 40
90
91 struct nfsdir {
92 struct nfs_fh3 fh;
93 fattr3 attr;
94 struct nfsdir *next;
95
96 struct nfsdirent *entries;
97 struct nfsdirent *current;
98 };
99
100 struct nfs_readahead {
101 uint64_t fh_offset;
102 uint64_t last_offset;
103 uint64_t buf_offset;
104 uint64_t buf_count;
105 time_t buf_ts;
106 void *buf;
107 uint32_t cur_ra;
108 };
109
110 struct nfsfh {
111 struct nfs_fh3 fh;
112 int is_sync;
113 int is_append;
114 uint64_t offset;
115 struct nfs_readahead ra;
116 };
117
118 struct nfs_context {
119 struct rpc_context *rpc;
120 char *server;
121 char *export;
122 struct nfs_fh3 rootfh;
123 uint64_t readmax;
124 uint64_t writemax;
125 char *cwd;
126 struct nfsdir *dircache;
127 };
128
129 void nfs_free_nfsdir(struct nfsdir *nfsdir)
130 {
131 while (nfsdir->entries) {
132 struct nfsdirent *dirent = nfsdir->entries->next;
133 if (nfsdir->entries->name != NULL) {
134 free(nfsdir->entries->name);
135 }
136 free(nfsdir->entries);
137 nfsdir->entries = dirent;
138 }
139 free(nfsdir->fh.data.data_val);
140 free(nfsdir);
141 }
142
143 static void nfs_dircache_add(struct nfs_context *nfs, struct nfsdir *nfsdir)
144 {
145 int i;
146 LIBNFS_LIST_ADD(&nfs->dircache, nfsdir);
147
148 for (nfsdir = nfs->dircache, i = 0; nfsdir; nfsdir = nfsdir->next, i++) {
149 if (i > MAX_DIR_CACHE) {
150 LIBNFS_LIST_REMOVE(&nfs->dircache, nfsdir);
151 nfs_free_nfsdir(nfsdir);
152 break;
153 }
154 }
155 }
156
157 static struct nfsdir *nfs_dircache_find(struct nfs_context *nfs, struct nfs_fh3 *fh)
158 {
159 struct nfsdir *nfsdir;
160
161 for (nfsdir = nfs->dircache; nfsdir; nfsdir = nfsdir->next) {
162 if (nfsdir->fh.data.data_len == fh->data.data_len &&
163 !memcmp(nfsdir->fh.data.data_val, fh->data.data_val, fh->data.data_len)) {
164 LIBNFS_LIST_REMOVE(&nfs->dircache, nfsdir);
165 return nfsdir;
166 }
167 }
168
169 return NULL;
170 }
171
172 struct nfs_cb_data;
173 typedef int (*continue_func)(struct nfs_context *nfs, fattr3 *attr,
174 struct nfs_cb_data *data);
175
176 struct nfs_cb_data {
177 struct nfs_context *nfs;
178 struct nfsfh *nfsfh;
179 char *saved_path, *path;
180 int link_count, no_follow;
181
182 nfs_cb cb;
183 void *private_data;
184
185 continue_func continue_cb;
186 void *continue_data;
187 void (*free_continue_data)(void *);
188 int continue_int;
189
190 struct nfs_fh3 fh;
191
192 /* for multi-read/write calls. */
193 int error;
194 int cancel;
195 int oom;
196 int num_calls;
197 uint64_t offset, count, max_offset, org_offset, org_count;
198 char *buffer;
199 char *usrbuf;
200 };
201
202 struct nfs_mcb_data {
203 struct nfs_cb_data *data;
204 uint64_t offset;
205 uint64_t count;
206 int update_pos;
207 };
208
209 static int nfs_lookup_path_async_internal(struct nfs_context *nfs, fattr3 *attr, struct nfs_cb_data *data, struct nfs_fh3 *fh);
210 static int nfs_normalize_path(struct nfs_context *nfs, char *path);
211
212 void nfs_set_auth(struct nfs_context *nfs, struct AUTH *auth)
213 {
214 rpc_set_auth(nfs->rpc, auth);
215 }
216
217 int nfs_get_fd(struct nfs_context *nfs)
218 {
219 return rpc_get_fd(nfs->rpc);
220 }
221
222 int nfs_queue_length(struct nfs_context *nfs)
223 {
224 return rpc_queue_length(nfs->rpc);
225 }
226
227 int nfs_which_events(struct nfs_context *nfs)
228 {
229 return rpc_which_events(nfs->rpc);
230 }
231
232 int nfs_service(struct nfs_context *nfs, int revents)
233 {
234 return rpc_service(nfs->rpc, revents);
235 }
236
237 char *nfs_get_error(struct nfs_context *nfs)
238 {
239 return rpc_get_error(nfs->rpc);
240 };
241
242 static int nfs_set_context_args(struct nfs_context *nfs, char *arg, char *val)
243 {
244 if (!strcmp(arg, "tcp-syncnt")) {
245 rpc_set_tcp_syncnt(nfs_get_rpc_context(nfs), atoi(val));
246 } else if (!strcmp(arg, "uid")) {
247 rpc_set_uid(nfs_get_rpc_context(nfs), atoi(val));
248 } else if (!strcmp(arg, "gid")) {
249 rpc_set_gid(nfs_get_rpc_context(nfs), atoi(val));
250 } else if (!strcmp(arg, "readahaed")) {
251 rpc_set_readahead(nfs_get_rpc_context(nfs), atoi(val));
252 }
253 return 0;
254 }
255
256 static struct nfs_url *nfs_parse_url(struct nfs_context *nfs, const char *url, int dir, int incomplete)
257 {
258 struct nfs_url *urls;
259 char *strp, *flagsp, *strp2;
260
261 if (strncmp(url, "nfs://", 6)) {
262 rpc_set_error(nfs->rpc, "Invalid URL specified");
263 return NULL;
264 }
265
266 urls = malloc(sizeof(struct nfs_url));
267 if (urls == NULL) {
268 rpc_set_error(nfs->rpc, "Out of memory");
269 return NULL;
270 }
271
272 memset(urls, 0x00, sizeof(struct nfs_url));
273 urls->server = strdup(url + 6);
274 if (urls->server == NULL) {
275 nfs_destroy_url(urls);
276 rpc_set_error(nfs->rpc, "Out of memory");
277 return NULL;
278 }
279
280 if (urls->server[0] == '/' || urls->server[0] == '\0' ||
281 urls->server[0] == '?') {
282 if (incomplete) {
283 flagsp = strchr(urls->server, '?');
284 goto flags;
285 }
286 nfs_destroy_url(urls);
287 rpc_set_error(nfs->rpc, "Invalid server string");
288 return NULL;
289 }
290
291 strp = strchr(urls->server, '/');
292 if (strp == NULL) {
293 if (incomplete) {
294 flagsp = strchr(urls->server, '?');
295 goto flags;
296 }
297 nfs_destroy_url(urls);
298 rpc_set_error(nfs->rpc, "Incomplete or invalid URL specified.");
299 return NULL;
300 }
301
302 urls->path = strdup(strp);
303 if (urls->path == NULL) {
304 nfs_destroy_url(urls);
305 rpc_set_error(nfs->rpc, "Out of memory");
306 return NULL;
307 }
308 *strp = 0;
309
310 if (dir) {
311 flagsp = strchr(urls->path, '?');
312 goto flags;
313 }
314
315 strp = strrchr(urls->path, '/');
316 if (strp == NULL) {
317 if (incomplete) {
318 flagsp = strchr(urls->path, '?');
319 goto flags;
320 }
321 nfs_destroy_url(urls);
322 rpc_set_error(nfs->rpc, "Incomplete or invalid URL specified.");
323 return NULL;
324 }
325 urls->file = strdup(strp);
326 if (urls->path == NULL) {
327 nfs_destroy_url(urls);
328 rpc_set_error(nfs->rpc, "Out of memory");
329 return NULL;
330 }
331 *strp = 0;
332 flagsp = strchr(urls->file, '?');
333
334 flags:
335 if (flagsp) {
336 *flagsp = 0;
337 }
338
339 if (urls->file && !strlen(urls->file)) {
340 free(urls->file);
341 urls->file = NULL;
342 if (!incomplete) {
343 nfs_destroy_url(urls);
344 rpc_set_error(nfs->rpc, "Incomplete or invalid URL specified.");
345 return NULL;
346 }
347 }
348
349 while (flagsp != NULL && *(flagsp+1) != 0) {
350 strp = flagsp + 1;
351 flagsp = strchr(strp, '&');
352 if (flagsp) {
353 *flagsp = 0;
354 }
355 strp2 = strchr(strp, '=');
356 if (strp2) {
357 *strp2 = 0;
358 strp2++;
359 nfs_set_context_args(nfs, strp, strp2);
360 }
361 }
362
363 if (urls->server && strlen(urls->server) <= 1) {
364 free(urls->server);
365 urls->server = NULL;
366 }
367
368 return urls;
369 }
370
371 struct nfs_url *nfs_parse_url_full(struct nfs_context *nfs, const char *url)
372 {
373 return nfs_parse_url(nfs, url, 0, 0);
374 }
375
376 struct nfs_url *nfs_parse_url_dir(struct nfs_context *nfs, const char *url)
377 {
378 return nfs_parse_url(nfs, url, 1, 0);
379 }
380
381 struct nfs_url *nfs_parse_url_incomplete(struct nfs_context *nfs, const char *url)
382 {
383 return nfs_parse_url(nfs, url, 0, 1);
384 }
385
386
387 void nfs_destroy_url(struct nfs_url *url)
388 {
389 if (url) {
390 free(url->server);
391 free(url->path);
392 free(url->file);
393 }
394 free(url);
395 }
396
397 struct nfs_context *nfs_init_context(void)
398 {
399 struct nfs_context *nfs;
400
401 nfs = malloc(sizeof(struct nfs_context));
402 if (nfs == NULL) {
403 return NULL;
404 }
405 memset(nfs, 0, sizeof(struct nfs_context));
406
407 nfs->rpc = rpc_init_context();
408 if (nfs->rpc == NULL) {
409 free(nfs);
410 return NULL;
411 }
412
413 nfs->cwd = strdup("/");
414
415 return nfs;
416 }
417
418 void nfs_destroy_context(struct nfs_context *nfs)
419 {
420 rpc_destroy_context(nfs->rpc);
421 nfs->rpc = NULL;
422
423 if (nfs->server) {
424 free(nfs->server);
425 nfs->server = NULL;
426 }
427
428 if (nfs->export) {
429 free(nfs->export);
430 nfs->export = NULL;
431 }
432
433 if (nfs->cwd) {
434 free(nfs->cwd);
435 nfs->cwd = NULL;
436 }
437
438 if (nfs->rootfh.data.data_val != NULL) {
439 free(nfs->rootfh.data.data_val);
440 nfs->rootfh.data.data_val = NULL;
441 }
442
443 while (nfs->dircache) {
444 struct nfsdir *nfsdir = nfs->dircache;
445 LIBNFS_LIST_REMOVE(&nfs->dircache, nfsdir);
446 nfs_free_nfsdir(nfsdir);
447 }
448
449 free(nfs);
450 }
451
452 struct rpc_cb_data {
453 char *server;
454 uint32_t program;
455 uint32_t version;
456
457 rpc_cb cb;
458 void *private_data;
459 };
460
461 void free_rpc_cb_data(struct rpc_cb_data *data)
462 {
463 free(data->server);
464 data->server = NULL;
465 free(data);
466 }
467
468 static void rpc_connect_program_5_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
469 {
470 struct rpc_cb_data *data = private_data;
471
472 assert(rpc->magic == RPC_CONTEXT_MAGIC);
473
474 /* Dont want any more callbacks even if the socket is closed */
475 rpc->connect_cb = NULL;
476
477 if (status == RPC_STATUS_ERROR) {
478 data->cb(rpc, status, command_data, data->private_data);
479 free_rpc_cb_data(data);
480 return;
481 }
482 if (status == RPC_STATUS_CANCEL) {
483 data->cb(rpc, status, "Command was cancelled", data->private_data);
484 free_rpc_cb_data(data);
485 return;
486 }
487
488 data->cb(rpc, status, NULL, data->private_data);
489 free_rpc_cb_data(data);
490 }
491
492 static void rpc_connect_program_4_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
493 {
494 struct rpc_cb_data *data = private_data;
495
496 assert(rpc->magic == RPC_CONTEXT_MAGIC);
497
498 /* Dont want any more callbacks even if the socket is closed */
499 rpc->connect_cb = NULL;
500
501 if (status == RPC_STATUS_ERROR) {
502 data->cb(rpc, status, command_data, data->private_data);
503 free_rpc_cb_data(data);
504 return;
505 }
506 if (status == RPC_STATUS_CANCEL) {
507 data->cb(rpc, status, "Command was cancelled", data->private_data);
508 free_rpc_cb_data(data);
509 return;
510 }
511
512 switch (data->program) {
513 case MOUNT_PROGRAM:
514 if (rpc_mount3_null_async(rpc, rpc_connect_program_5_cb,
515 data) != 0) {
516 data->cb(rpc, status, command_data, data->private_data);
517 free_rpc_cb_data(data);
518 return;
519 }
520 return;
521 case NFS_PROGRAM:
522 if (rpc_nfs3_null_async(rpc, rpc_connect_program_5_cb,
523 data) != 0) {
524 data->cb(rpc, status, command_data, data->private_data);
525 free_rpc_cb_data(data);
526 return;
527 }
528 return;
529 }
530
531 data->cb(rpc, status, NULL, data->private_data);
532 free_rpc_cb_data(data);
533 }
534
535 static void rpc_connect_program_3_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
536 {
537 struct rpc_cb_data *data = private_data;
538 struct pmap3_string_result *gar;
539 uint32_t rpc_port = 0;
540 unsigned char *ptr;
541
542 assert(rpc->magic == RPC_CONTEXT_MAGIC);
543
544 if (status == RPC_STATUS_ERROR) {
545 data->cb(rpc, status, command_data, data->private_data);
546 free_rpc_cb_data(data);
547 return;
548 }
549 if (status == RPC_STATUS_CANCEL) {
550 data->cb(rpc, status, "Command was cancelled", data->private_data);
551 free_rpc_cb_data(data);
552 return;
553 }
554
555 switch (rpc->s.ss_family) {
556 case AF_INET:
557 rpc_port = *(uint32_t *)command_data;
558 break;
559 case AF_INET6:
560 /* ouch. portmapper and ipv6 are not great */
561 gar = command_data;
562 if (gar->addr == NULL) {
563 break;
564 }
565 ptr = strrchr(gar->addr, '.');
566 if (ptr == NULL) {
567 break;
568 }
569 rpc_port = atoi(ptr + 1);
570 *ptr = 0;
571 ptr = strrchr(gar->addr, '.');
572 if (ptr == NULL) {
573 break;
574 }
575 rpc_port += 256 * atoi(ptr + 1);
576 break;
577 }
578 if (rpc_port == 0) {
579 rpc_set_error(rpc, "RPC error. Program is not available on %s", data->server);
580 data->cb(rpc, RPC_STATUS_ERROR, rpc_get_error(rpc), data->private_data);
581 free_rpc_cb_data(data);
582 return;
583 }
584
585 rpc_disconnect(rpc, "normal disconnect");
586 if (rpc_connect_async(rpc, data->server, rpc_port, rpc_connect_program_4_cb, data) != 0) {
587 data->cb(rpc, status, command_data, data->private_data);
588 free_rpc_cb_data(data);
589 return;
590 }
591 }
592
593 static void rpc_connect_program_2_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
594 {
595 struct rpc_cb_data *data = private_data;
596 struct pmap3_mapping map;
597
598 assert(rpc->magic == RPC_CONTEXT_MAGIC);
599
600 if (status == RPC_STATUS_ERROR) {
601 data->cb(rpc, status, command_data, data->private_data);
602 free_rpc_cb_data(data);
603 return;
604 }
605 if (status == RPC_STATUS_CANCEL) {
606 data->cb(rpc, status, "Command was cancelled", data->private_data);
607 free_rpc_cb_data(data);
608 return;
609 }
610
611 switch (rpc->s.ss_family) {
612 case AF_INET:
613 if (rpc_pmap2_getport_async(rpc, data->program, data->version, IPPROTO_TCP, rpc_connect_program_3_cb, private_data) != 0) {
614 data->cb(rpc, status, command_data, data->private_data);
615 free_rpc_cb_data(data);
616 return;
617 }
618 break;
619 case AF_INET6:
620 map.prog=data->program;
621 map.vers=data->version;
622 map.netid="";
623 map.addr="";
624 map.owner="";
625 if (rpc_pmap3_getaddr_async(rpc, &map, rpc_connect_program_3_cb, private_data) != 0) {
626 data->cb(rpc, status, command_data, data->private_data);
627 free_rpc_cb_data(data);
628 return;
629 }
630 break;
631 }
632 }
633
634 static void rpc_connect_program_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
635 {
636 struct rpc_cb_data *data = private_data;
637
638 assert(rpc->magic == RPC_CONTEXT_MAGIC);
639
640 /* Dont want any more callbacks even if the socket is closed */
641 rpc->connect_cb = NULL;
642
643 if (status == RPC_STATUS_ERROR) {
644 data->cb(rpc, status, command_data, data->private_data);
645 free_rpc_cb_data(data);
646 return;
647 }
648 if (status == RPC_STATUS_CANCEL) {
649 data->cb(rpc, status, "Command was cancelled", data->private_data);
650 free_rpc_cb_data(data);
651 return;
652 }
653
654 switch (rpc->s.ss_family) {
655 case AF_INET:
656 if (rpc_pmap2_null_async(rpc, rpc_connect_program_2_cb, data) != 0) {
657 data->cb(rpc, status, command_data, data->private_data);
658 free_rpc_cb_data(data);
659 return;
660 }
661 break;
662 case AF_INET6:
663 if (rpc_pmap3_null_async(rpc, rpc_connect_program_2_cb, data) != 0) {
664 data->cb(rpc, status, command_data, data->private_data);
665 free_rpc_cb_data(data);
666 return;
667 }
668 break;
669 }
670 }
671
672 int rpc_connect_program_async(struct rpc_context *rpc, const char *server, int program, int version, rpc_cb cb, void *private_data)
673 {
674 struct rpc_cb_data *data;
675
676 data = malloc(sizeof(struct rpc_cb_data));
677 if (data == NULL) {
678 return -1;
679 }
680 memset(data, 0, sizeof(struct rpc_cb_data));
681 data->server = strdup(server);
682 data->program = program;
683 data->version = version;
684
685 data->cb = cb;
686 data->private_data = private_data;
687
688 if (rpc_connect_async(rpc, server, 111, rpc_connect_program_1_cb, data) != 0) {
689 rpc_set_error(rpc, "Failed to start connection");
690 free_rpc_cb_data(data);
691 return -1;
692 }
693 return 0;
694 }
695
696 static void free_nfs_cb_data(struct nfs_cb_data *data)
697 {
698 if (data->continue_data != NULL) {
699 assert(data->free_continue_data);
700 data->free_continue_data(data->continue_data);
701 }
702
703 free(data->saved_path);
704 free(data->fh.data.data_val);
705 free(data->buffer);
706
707 free(data);
708 }
709
710 static void free_nfsfh(struct nfsfh *nfsfh)
711 {
712 if (nfsfh->fh.data.data_val != NULL) {
713 free(nfsfh->fh.data.data_val);
714 nfsfh->fh.data.data_val = NULL;
715 }
716 free(nfsfh->ra.buf);
717 free(nfsfh);
718 }
719
720
721 static void nfs_mount_10_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
722 {
723 struct nfs_cb_data *data = private_data;
724 struct nfs_context *nfs = data->nfs;
725
726 assert(rpc->magic == RPC_CONTEXT_MAGIC);
727
728 if (status == RPC_STATUS_ERROR) {
729 data->cb(-EFAULT, nfs, command_data, data->private_data);
730 free_nfs_cb_data(data);
731 return;
732 }
733 if (status == RPC_STATUS_CANCEL) {
734 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
735 free_nfs_cb_data(data);
736 return;
737 }
738
739 data->cb(0, nfs, NULL, data->private_data);
740 free_nfs_cb_data(data);
741 }
742
743 static void nfs_mount_9_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
744 {
745 struct nfs_cb_data *data = private_data;
746 struct nfs_context *nfs = data->nfs;
747 FSINFO3res *res = command_data;
748 struct GETATTR3args args;
749
750 assert(rpc->magic == RPC_CONTEXT_MAGIC);
751
752 if (status == RPC_STATUS_ERROR) {
753 data->cb(-EFAULT, nfs, command_data, data->private_data);
754 free_nfs_cb_data(data);
755 return;
756 }
757 if (status == RPC_STATUS_CANCEL) {
758 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
759 free_nfs_cb_data(data);
760 return;
761 }
762
763 nfs->readmax = res->FSINFO3res_u.resok.rtmax;
764 nfs->writemax = res->FSINFO3res_u.resok.wtmax;
765
766 memset(&args, 0, sizeof(GETATTR3args));
767 args.object = nfs->rootfh;
768
769 if (rpc_nfs3_getattr_async(rpc, nfs_mount_10_cb, &args, data) != 0) {
770 data->cb(-ENOMEM, nfs, command_data, data->private_data);
771 free_nfs_cb_data(data);
772 return;
773 }
774 }
775
776 static void nfs_mount_8_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
777 {
778 struct nfs_cb_data *data = private_data;
779 struct nfs_context *nfs = data->nfs;
780 struct FSINFO3args args;
781
782 assert(rpc->magic == RPC_CONTEXT_MAGIC);
783
784 if (status == RPC_STATUS_ERROR) {
785 data->cb(-EFAULT, nfs, command_data, data->private_data);
786 free_nfs_cb_data(data);
787 return;
788 }
789 if (status == RPC_STATUS_CANCEL) {
790 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
791 free_nfs_cb_data(data);
792 return;
793 }
794
795 /* NFS TCP connections we want to autoreconnect after sessions are torn down (due to inactivity or error) */
796 rpc_set_autoreconnect(rpc);
797
798 args.fsroot = nfs->rootfh;
799 if (rpc_nfs3_fsinfo_async(rpc, nfs_mount_9_cb, &args, data) != 0) {
800 data->cb(-ENOMEM, nfs, command_data, data->private_data);
801 free_nfs_cb_data(data);
802 return;
803 }
804 }
805
806 static void nfs_mount_6_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
807 {
808 struct nfs_cb_data *data = private_data;
809 struct nfs_context *nfs = data->nfs;
810 mountres3 *res;
811
812 assert(rpc->magic == RPC_CONTEXT_MAGIC);
813
814 if (status == RPC_STATUS_ERROR) {
815 data->cb(-EFAULT, nfs, command_data, data->private_data);
816 free_nfs_cb_data(data);
817 return;
818 }
819 if (status == RPC_STATUS_CANCEL) {
820 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
821 free_nfs_cb_data(data);
822 return;
823 }
824
825 res = command_data;
826 if (res->fhs_status != MNT3_OK) {
827 rpc_set_error(rpc, "RPC error: Mount failed with error %s(%d) %s(%d)", mountstat3_to_str(res->fhs_status), res->fhs_status, strerror(-mountstat3_to_errno(res->fhs_status)), -mountstat3_to_errno(res->fhs_status));
828 data->cb(mountstat3_to_errno(res->fhs_status), nfs, rpc_get_error(rpc), data->private_data);
829 free_nfs_cb_data(data);
830 return;
831 }
832
833 nfs->rootfh.data.data_len = res->mountres3_u.mountinfo.fhandle.fhandle3_len;
834 nfs->rootfh.data.data_val = malloc(nfs->rootfh.data.data_len);
835 if (nfs->rootfh.data.data_val == NULL) {
836 rpc_set_error(rpc, "Out of memory. Could not allocate memory to store root filehandle");
837 data->cb(-ENOMEM, nfs, rpc_get_error(rpc), data->private_data);
838 free_nfs_cb_data(data);
839 return;
840 }
841 memcpy(nfs->rootfh.data.data_val, res->mountres3_u.mountinfo.fhandle.fhandle3_val, nfs->rootfh.data.data_len);
842
843 rpc_disconnect(rpc, "normal disconnect");
844
845 if (rpc_connect_program_async(nfs->rpc, nfs->server, NFS_PROGRAM, NFS_V3, nfs_mount_8_cb, data) != 0) {
846 data->cb(-ENOMEM, nfs, command_data, data->private_data);
847 free_nfs_cb_data(data);
848 return;
849 }
850 }
851
852
853 static void nfs_mount_5_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
854 {
855 struct nfs_cb_data *data = private_data;
856 struct nfs_context *nfs = data->nfs;
857
858 assert(rpc->magic == RPC_CONTEXT_MAGIC);
859
860 if (status == RPC_STATUS_ERROR) {
861 data->cb(-EFAULT, nfs, command_data, data->private_data);
862 free_nfs_cb_data(data);
863 return;
864 }
865 if (status == RPC_STATUS_CANCEL) {
866 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
867 free_nfs_cb_data(data);
868 return;
869 }
870
871 if (rpc_mount3_mnt_async(rpc, nfs_mount_6_cb, nfs->export, data) != 0) {
872 data->cb(-ENOMEM, nfs, command_data, data->private_data);
873 free_nfs_cb_data(data);
874 return;
875 }
876 }
877
878 /*
879 * Async call for mounting an nfs share and geting the root filehandle
880 */
881 int nfs_mount_async(struct nfs_context *nfs, const char *server, const char *export, nfs_cb cb, void *private_data)
882 {
883 struct nfs_cb_data *data;
884 char *new_server, *new_export;
885
886 data = malloc(sizeof(struct nfs_cb_data));
887 if (data == NULL) {
888 rpc_set_error(nfs->rpc, "out of memory. failed to allocate memory for nfs mount data");
889 return -1;
890 }
891 memset(data, 0, sizeof(struct nfs_cb_data));
892 new_server = strdup(server);
893 new_export = strdup(export);
894 if (nfs->server != NULL) {
895 free(nfs->server);
896 }
897 nfs->server = new_server;
898 if (nfs->export != NULL) {
899 free(nfs->export);
900 }
901 nfs->export = new_export;
902 data->nfs = nfs;
903 data->cb = cb;
904 data->private_data = private_data;
905
906 if (rpc_connect_program_async(nfs->rpc, server, MOUNT_PROGRAM, MOUNT_V3, nfs_mount_5_cb, data) != 0) {
907 rpc_set_error(nfs->rpc, "Failed to start connection");
908 free_nfs_cb_data(data);
909 return -1;
910 }
911
912 return 0;
913 }
914
915
916
917 /*
918 * Functions to first look up a path, component by component, and then finally call a specific function once
919 * the filehandle for the final component is found.
920 */
921 static void nfs_lookup_path_2_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
922 {
923 struct nfs_cb_data *data = private_data;
924 struct nfs_context *nfs = data->nfs;
925 READLINK3res *res;
926 char *path, *newpath;
927
928 assert(rpc->magic == RPC_CONTEXT_MAGIC);
929
930 if (status == RPC_STATUS_ERROR) {
931 data->cb(-EFAULT, nfs, command_data, data->private_data);
932 free_nfs_cb_data(data);
933 return;
934 }
935 if (status == RPC_STATUS_CANCEL) {
936 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
937 free_nfs_cb_data(data);
938 return;
939 }
940
941 res = command_data;
942 if (res->status != NFS3_OK) {
943 rpc_set_error(nfs->rpc, "NFS: READLINK of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
944 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
945 free_nfs_cb_data(data);
946 return;
947 }
948
949 path = res->READLINK3res_u.resok.data;
950
951 /* Handle absolute paths, ensuring that the path lies within the
952 * export. */
953 if (path[0] == '/') {
954 if (strstr(path, nfs->export) == path) {
955 char *ptr = path + strlen(nfs->export);
956 if (*ptr == '/') {
957 newpath = strdup(ptr);
958 } else if (*ptr == '\0') {
959 newpath = strdup("/");
960 } else {
961 data->cb(-ENOENT, nfs, "Symbolic link points outside export", data->private_data);
962 free_nfs_cb_data(data);
963 return;
964 }
965 } else {
966 data->cb(-ENOENT, nfs, "Symbolic link points outside export", data->private_data);
967 free_nfs_cb_data(data);
968 return;
969 }
970
971 if (!newpath)
972 goto nomem;
973 } else {
974 /* Handle relative paths, both the case where the current
975 * component is an intermediate component and when it is the
976 * final component. */
977 if (data->path[0]) {
978 /* Since path points to a component and saved_path
979 * always starts with '/', path[-1] is valid. */
980 data->path[-1] = '\0';
981 newpath = malloc(strlen(data->saved_path) + strlen(path) + strlen(data->path) + 6);
982 if (!newpath)
983 goto nomem;
984
985 sprintf(newpath, "%s/../%s/%s", data->saved_path, path, data->path);
986 } else {
987 newpath = malloc(strlen(data->saved_path) + strlen(path) + 5);
988 if (!newpath)
989 goto nomem;
990
991 sprintf(newpath, "%s/../%s", data->saved_path, path);
992 }
993 }
994 free(data->saved_path);
995 data->saved_path = newpath;
996
997 if (nfs_normalize_path(nfs, data->saved_path) != 0) {
998 data->cb(-ENOENT, nfs, "Symbolic link resolves to invalid path", data->private_data);
999 free_nfs_cb_data(data);
1000 return;
1001 }
1002
1003 data->path = data->saved_path;
1004 nfs_lookup_path_async_internal(nfs, NULL, data, &nfs->rootfh);
1005 return;
1006
1007 nomem:
1008 data->cb(-ENOMEM, nfs, "Failed to allocate memory for path", data->private_data);
1009 free_nfs_cb_data(data);
1010 }
1011
1012 static void nfs_lookup_path_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1013 {
1014 struct nfs_cb_data *data = private_data;
1015 struct nfs_context *nfs = data->nfs;
1016 LOOKUP3res *res;
1017 fattr3 *attr;
1018
1019 assert(rpc->magic == RPC_CONTEXT_MAGIC);
1020
1021 if (status == RPC_STATUS_ERROR) {
1022 data->cb(-EFAULT, nfs, command_data, data->private_data);
1023 free_nfs_cb_data(data);
1024 return;
1025 }
1026 if (status == RPC_STATUS_CANCEL) {
1027 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1028 free_nfs_cb_data(data);
1029 return;
1030 }
1031
1032 res = command_data;
1033 if (res->status != NFS3_OK) {
1034 rpc_set_error(nfs->rpc, "NFS: Lookup of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1035 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1036 free_nfs_cb_data(data);
1037 return;
1038 }
1039
1040 attr = res->LOOKUP3res_u.resok.obj_attributes.attributes_follow ?
1041 &res->LOOKUP3res_u.resok.obj_attributes.post_op_attr_u.attributes :
1042 NULL;
1043
1044 /* This function will always invoke the callback and cleanup
1045 * for failures. So no need to check the return value.
1046 */
1047 nfs_lookup_path_async_internal(nfs, attr, data, &res->LOOKUP3res_u.resok.object);
1048 }
1049
1050 static int nfs_lookup_path_async_internal(struct nfs_context *nfs, fattr3 *attr, struct nfs_cb_data *data, struct nfs_fh3 *fh)
1051 {
1052 char *path, *slash;
1053 LOOKUP3args args;
1054
1055 while (*data->path == '/') {
1056 data->path++;
1057 }
1058
1059 path = data->path;
1060 slash = strchr(path, '/');
1061
1062 if (attr && attr->type == NF3LNK && (!data->no_follow || *path != '\0')) {
1063 READLINK3args args;
1064
1065 if (data->link_count++ >= MAX_LINK_COUNT) {
1066 data->cb(-ELOOP, nfs, "Too many levels of symbolic links", data->private_data);
1067 free_nfs_cb_data(data);
1068 return -1;
1069 }
1070
1071 args.symlink = *fh;
1072
1073 if (rpc_nfs3_readlink_async(nfs->rpc, nfs_lookup_path_2_cb, &args, data) != 0) {
1074 rpc_set_error(nfs->rpc, "RPC error: Failed to send READLINK call for %s", data->path);
1075 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1076 free_nfs_cb_data(data);
1077 return -1;
1078 }
1079
1080 if (slash != NULL) {
1081 *slash = '/';
1082 }
1083 return 0;
1084 }
1085
1086 if (slash != NULL) {
1087 /* Clear slash so that path is a zero terminated string for
1088 * the current path component. Set it back to '/' again later
1089 * when we are finished referencing this component so that
1090 * data->saved_path will still point to the full
1091 * normalized path.
1092 */
1093 *slash = 0;
1094 data->path = slash+1;
1095 } else {
1096 while (*data->path != 0) {
1097 data->path++;
1098 }
1099 }
1100
1101 if (*path == 0) {
1102 data->fh.data.data_len = fh->data.data_len;
1103 data->fh.data.data_val = malloc(data->fh.data.data_len);
1104 if (data->fh.data.data_val == NULL) {
1105 rpc_set_error(nfs->rpc, "Out of memory: Failed to allocate fh for %s", data->path);
1106 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1107 free_nfs_cb_data(data);
1108 return -1;
1109 }
1110 memcpy(data->fh.data.data_val, fh->data.data_val, data->fh.data.data_len);
1111 if (slash != NULL) {
1112 *slash = '/';
1113 }
1114 data->continue_cb(nfs, attr, data);
1115 return 0;
1116 }
1117
1118 memset(&args, 0, sizeof(LOOKUP3args));
1119 args.what.dir = *fh;
1120 args.what.name = path;
1121
1122 if (rpc_nfs3_lookup_async(nfs->rpc, nfs_lookup_path_1_cb, &args, data) != 0) {
1123 rpc_set_error(nfs->rpc, "RPC error: Failed to send lookup call for %s", data->path);
1124 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1125 free_nfs_cb_data(data);
1126 return -1;
1127 }
1128 if (slash != NULL) {
1129 *slash = '/';
1130 }
1131 return 0;
1132 }
1133
1134 static int nfs_normalize_path(struct nfs_context *nfs, char *path)
1135 {
1136 char *str;
1137 int len;
1138
1139 /* // -> / */
1140 while ((str = strstr(path, "//"))) {
1141 while(*str) {
1142 *str = *(str + 1);
1143 str++;
1144 }
1145 }
1146
1147 /* /./ -> / */
1148 while ((str = strstr(path, "/./"))) {
1149 while(*(str + 1)) {
1150 *str = *(str + 2);
1151 str++;
1152 }
1153 }
1154
1155 /* ^/../ -> error */
1156 if (!strncmp(path, "/../", 4)) {
1157 rpc_set_error(nfs->rpc,
1158 "Absolute path starts with '/../' "
1159 "during normalization");
1160 return -1;
1161 }
1162
1163 /* ^[^/] -> error */
1164 if (path[0] != '/') {
1165 rpc_set_error(nfs->rpc,
1166 "Absolute path does not start with '/'");
1167 return -1;
1168 }
1169
1170 /* /string/../ -> / */
1171 while ((str = strstr(path, "/../"))) {
1172 char *tmp;
1173
1174 if (!strncmp(path, "/../", 4)) {
1175 rpc_set_error(nfs->rpc,
1176 "Absolute path starts with '/../' "
1177 "during normalization");
1178 return -1;
1179 }
1180
1181 tmp = str - 1;
1182 while (*tmp != '/') {
1183 tmp--;
1184 }
1185 str += 3;
1186 while((*(tmp++) = *(str++)) != '\0')
1187 ;
1188 }
1189
1190 /* /$ -> \0 */
1191 len = strlen(path);
1192 if (len > 1) {
1193 if (path[len - 1] == '/') {
1194 path[len - 1] = '\0';
1195 len--;
1196 }
1197 }
1198 if (path[0] == '\0') {
1199 rpc_set_error(nfs->rpc,
1200 "Absolute path became '' "
1201 "during normalization");
1202 return -1;
1203 }
1204
1205 /* /.$ -> \0 */
1206 if (len >= 2) {
1207 if (!strcmp(&path[len - 2], "/.")) {
1208 path[len - 2] = '\0';
1209 len -= 2;
1210 }
1211 }
1212
1213 /* ^/..$ -> error */
1214 if (!strcmp(path, "/..")) {
1215 rpc_set_error(nfs->rpc,
1216 "Absolute path is '/..' "
1217 "during normalization");
1218 return -1;
1219 }
1220
1221 /* /string/..$ -> / */
1222 if (len >= 3) {
1223 if (!strcmp(&path[len - 3], "/..")) {
1224 char *tmp = &path[len - 3];
1225 while (*--tmp != '/')
1226 ;
1227 *tmp = '\0';
1228 }
1229 }
1230
1231 return 0;
1232 }
1233
1234 static void nfs_lookup_path_getattr_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1235 {
1236 struct nfs_cb_data *data = private_data;
1237 struct nfs_context *nfs = data->nfs;
1238 GETATTR3res *res;
1239 fattr3 *attr;
1240
1241 assert(rpc->magic == RPC_CONTEXT_MAGIC);
1242
1243 if (status == RPC_STATUS_ERROR) {
1244 data->cb(-EFAULT, nfs, command_data, data->private_data);
1245 free_nfs_cb_data(data);
1246 return;
1247 }
1248 if (status == RPC_STATUS_CANCEL) {
1249 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1250 free_nfs_cb_data(data);
1251 return;
1252 }
1253
1254 res = command_data;
1255 if (res->status != NFS3_OK) {
1256 rpc_set_error(nfs->rpc, "NFS: GETATTR of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1257 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1258 free_nfs_cb_data(data);
1259 return;
1260 }
1261
1262 attr = &res->GETATTR3res_u.resok.obj_attributes;
1263 /* This function will always invoke the callback and cleanup
1264 * for failures. So no need to check the return value.
1265 */
1266 nfs_lookup_path_async_internal(nfs, attr, data, &nfs->rootfh);
1267 }
1268
1269 static int nfs_lookuppath_async(struct nfs_context *nfs, const char *path, int no_follow, nfs_cb cb, void *private_data, continue_func continue_cb, void *continue_data, void (*free_continue_data)(void *), int continue_int)
1270 {
1271 struct nfs_cb_data *data;
1272 struct GETATTR3args args;
1273
1274 if (path[0] == '\0') {
1275 path = ".";
1276 }
1277
1278 data = malloc(sizeof(struct nfs_cb_data));
1279 if (data == NULL) {
1280 rpc_set_error(nfs->rpc, "out of memory: failed to allocate "
1281 "nfs_cb_data structure");
1282 if (free_continue_data)
1283 free_continue_data(continue_data);
1284 return -1;
1285 }
1286 memset(data, 0, sizeof(struct nfs_cb_data));
1287 data->nfs = nfs;
1288 data->cb = cb;
1289 data->continue_cb = continue_cb;
1290 data->continue_data = continue_data;
1291 data->free_continue_data = free_continue_data;
1292 data->continue_int = continue_int;
1293 data->private_data = private_data;
1294 data->no_follow = no_follow;
1295 if (path[0] == '/') {
1296 data->saved_path = strdup(path);
1297 } else {
1298 data->saved_path = malloc(strlen(path) + strlen(nfs->cwd) + 2);
1299 if (data->saved_path == NULL) {
1300 rpc_set_error(nfs->rpc, "out of memory: failed to "
1301 "malloc path string");
1302 free_nfs_cb_data(data);
1303 return -1;
1304 }
1305 sprintf(data->saved_path, "%s/%s", nfs->cwd, path);
1306 }
1307
1308 if (data->saved_path == NULL) {
1309 rpc_set_error(nfs->rpc, "out of memory: failed to copy path string");
1310 free_nfs_cb_data(data);
1311 return -1;
1312 }
1313 if (nfs_normalize_path(nfs, data->saved_path) != 0) {
1314 free_nfs_cb_data(data);
1315 return -1;
1316 }
1317
1318 data->path = data->saved_path;
1319 if (data->path[0]) {
1320 /* This function will always invoke the callback and cleanup
1321 * for failures. So no need to check the return value.
1322 */
1323 nfs_lookup_path_async_internal(nfs, NULL, data, &nfs->rootfh);
1324 return 0;
1325 }
1326
1327 /* We have a request for "", so just perform a GETATTR3 so we can
1328 * return the attributes to the caller.
1329 */
1330 memset(&args, 0, sizeof(GETATTR3args));
1331 args.object = nfs->rootfh;
1332 if (rpc_nfs3_getattr_async(nfs->rpc, nfs_lookup_path_getattr_cb, &args, data) != 0) {
1333 free_nfs_cb_data(data);
1334 return -1;
1335 }
1336 return 0;
1337 }
1338
1339
1340 /*
1341 * Async stat()
1342 */
1343 static dev_t specdata3_to_rdev(struct specdata3 *rdev)
1344 {
1345 #ifdef makedev
1346 return makedev(rdev->specdata1, rdev->specdata2);
1347 #else
1348 return 0;
1349 #endif
1350 }
1351
1352 static void nfs_stat_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1353 {
1354 GETATTR3res *res;
1355 struct nfs_cb_data *data = private_data;
1356 struct nfs_context *nfs = data->nfs;
1357 #ifdef WIN32
1358 struct __stat64 st;
1359 #else
1360 struct stat st;
1361 #endif
1362
1363 assert(rpc->magic == RPC_CONTEXT_MAGIC);
1364
1365 if (status == RPC_STATUS_ERROR) {
1366 data->cb(-EFAULT, nfs, command_data, data->private_data);
1367 free_nfs_cb_data(data);
1368 return;
1369 }
1370 if (status == RPC_STATUS_CANCEL) {
1371 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1372 free_nfs_cb_data(data);
1373 return;
1374 }
1375
1376 res = command_data;
1377 if (res->status != NFS3_OK) {
1378 rpc_set_error(nfs->rpc, "NFS: GETATTR of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1379 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1380 free_nfs_cb_data(data);
1381 return;
1382 }
1383
1384 st.st_dev = res->GETATTR3res_u.resok.obj_attributes.fsid;
1385 st.st_ino = res->GETATTR3res_u.resok.obj_attributes.fileid;
1386 st.st_mode = res->GETATTR3res_u.resok.obj_attributes.mode;
1387 switch (res->GETATTR3res_u.resok.obj_attributes.type) {
1388 case NF3REG:
1389 st.st_mode |= S_IFREG;
1390 break;
1391 case NF3DIR:
1392 st.st_mode |= S_IFDIR;
1393 break;
1394 case NF3BLK:
1395 st.st_mode |= S_IFBLK;
1396 break;
1397 case NF3CHR:
1398 st.st_mode |= S_IFCHR;
1399 break;
1400 case NF3LNK:
1401 st.st_mode |= S_IFLNK;
1402 break;
1403 case NF3SOCK:
1404 st.st_mode |= S_IFSOCK;
1405 break;
1406 case NF3FIFO:
1407 st.st_mode |= S_IFIFO;
1408 break;
1409 }
1410 st.st_nlink = res->GETATTR3res_u.resok.obj_attributes.nlink;
1411 st.st_uid = res->GETATTR3res_u.resok.obj_attributes.uid;
1412 st.st_gid = res->GETATTR3res_u.resok.obj_attributes.gid;
1413 st.st_rdev = specdata3_to_rdev(&res->GETATTR3res_u.resok.obj_attributes.rdev);
1414 st.st_size = res->GETATTR3res_u.resok.obj_attributes.size;
1415 #ifndef WIN32
1416 st.st_blksize = NFS_BLKSIZE;
1417 st.st_blocks = (res->GETATTR3res_u.resok.obj_attributes.used + 512 - 1) / 512;
1418 #endif//WIN32
1419 st.st_atime = res->GETATTR3res_u.resok.obj_attributes.atime.seconds;
1420 st.st_mtime = res->GETATTR3res_u.resok.obj_attributes.mtime.seconds;
1421 st.st_ctime = res->GETATTR3res_u.resok.obj_attributes.ctime.seconds;
1422 #ifdef HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
1423 st.st_atim.tv_nsec = res->GETATTR3res_u.resok.obj_attributes.atime.nseconds;
1424 st.st_mtim.tv_nsec = res->GETATTR3res_u.resok.obj_attributes.mtime.nseconds;
1425 st.st_ctim.tv_nsec = res->GETATTR3res_u.resok.obj_attributes.ctime.nseconds;
1426 #endif
1427
1428 data->cb(0, nfs, &st, data->private_data);
1429 free_nfs_cb_data(data);
1430 }
1431
1432 static int nfs_stat_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
1433 {
1434 struct GETATTR3args args;
1435
1436 memset(&args, 0, sizeof(GETATTR3args));
1437 args.object = data->fh;
1438
1439 if (rpc_nfs3_getattr_async(nfs->rpc, nfs_stat_1_cb, &args, data) != 0) {
1440 rpc_set_error(nfs->rpc, "RPC error: Failed to send STAT GETATTR call for %s", data->path);
1441 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1442 free_nfs_cb_data(data);
1443 return -1;
1444 }
1445 return 0;
1446 }
1447
1448 int nfs_stat_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
1449 {
1450 if (nfs_lookuppath_async(nfs, path, 0, cb, private_data, nfs_stat_continue_internal, NULL, NULL, 0) != 0) {
1451 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
1452 return -1;
1453 }
1454
1455 return 0;
1456 }
1457
1458
1459 /*
1460 * Async nfs_stat64()
1461 */
1462 static void nfs_stat64_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1463 {
1464 GETATTR3res *res;
1465 struct nfs_cb_data *data = private_data;
1466 struct nfs_context *nfs = data->nfs;
1467 struct nfs_stat_64 st;
1468
1469 assert(rpc->magic == RPC_CONTEXT_MAGIC);
1470
1471 if (status == RPC_STATUS_ERROR) {
1472 data->cb(-EFAULT, nfs, command_data, data->private_data);
1473 free_nfs_cb_data(data);
1474 return;
1475 }
1476 if (status == RPC_STATUS_CANCEL) {
1477 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1478 free_nfs_cb_data(data);
1479 return;
1480 }
1481
1482 res = command_data;
1483 if (res->status != NFS3_OK) {
1484 rpc_set_error(nfs->rpc, "NFS: GETATTR of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1485 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1486 free_nfs_cb_data(data);
1487 return;
1488 }
1489
1490 st.nfs_dev = res->GETATTR3res_u.resok.obj_attributes.fsid;
1491 st.nfs_ino = res->GETATTR3res_u.resok.obj_attributes.fileid;
1492 st.nfs_mode = res->GETATTR3res_u.resok.obj_attributes.mode;
1493 switch (res->GETATTR3res_u.resok.obj_attributes.type) {
1494 case NF3REG:
1495 st.nfs_mode |= S_IFREG;
1496 break;
1497 case NF3DIR:
1498 st.nfs_mode |= S_IFDIR;
1499 break;
1500 case NF3BLK:
1501 st.nfs_mode |= S_IFBLK;
1502 break;
1503 case NF3CHR:
1504 st.nfs_mode |= S_IFCHR;
1505 break;
1506 case NF3LNK:
1507 st.nfs_mode |= S_IFLNK;
1508 break;
1509 case NF3SOCK:
1510 st.nfs_mode |= S_IFSOCK;
1511 break;
1512 case NF3FIFO:
1513 st.nfs_mode |= S_IFIFO;
1514 break;
1515 }
1516 st.nfs_nlink = res->GETATTR3res_u.resok.obj_attributes.nlink;
1517 st.nfs_uid = res->GETATTR3res_u.resok.obj_attributes.uid;
1518 st.nfs_gid = res->GETATTR3res_u.resok.obj_attributes.gid;
1519 st.nfs_rdev = specdata3_to_rdev(&res->GETATTR3res_u.resok.obj_attributes.rdev);
1520 st.nfs_size = res->GETATTR3res_u.resok.obj_attributes.size;
1521 st.nfs_blksize = NFS_BLKSIZE;
1522 st.nfs_blocks = (res->GETATTR3res_u.resok.obj_attributes.used + 512 - 1) / 512;
1523 st.nfs_atime = res->GETATTR3res_u.resok.obj_attributes.atime.seconds;
1524 st.nfs_mtime = res->GETATTR3res_u.resok.obj_attributes.mtime.seconds;
1525 st.nfs_ctime = res->GETATTR3res_u.resok.obj_attributes.ctime.seconds;
1526 st.nfs_atime_nsec = res->GETATTR3res_u.resok.obj_attributes.atime.nseconds;
1527 st.nfs_mtime_nsec = res->GETATTR3res_u.resok.obj_attributes.mtime.nseconds;
1528 st.nfs_ctime_nsec = res->GETATTR3res_u.resok.obj_attributes.ctime.nseconds;
1529 st.nfs_used = res->GETATTR3res_u.resok.obj_attributes.used;
1530
1531 data->cb(0, nfs, &st, data->private_data);
1532 free_nfs_cb_data(data);
1533 }
1534
1535 static int nfs_stat64_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
1536 {
1537 struct GETATTR3args args;
1538
1539 memset(&args, 0, sizeof(GETATTR3args));
1540 args.object = data->fh;
1541
1542 if (rpc_nfs3_getattr_async(nfs->rpc, nfs_stat64_1_cb, &args, data) != 0) {
1543 rpc_set_error(nfs->rpc, "RPC error: Failed to send STAT GETATTR call for %s", data->path);
1544 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1545 free_nfs_cb_data(data);
1546 return -1;
1547 }
1548 return 0;
1549 }
1550
1551 int nfs_stat64_async_internal(struct nfs_context *nfs, const char *path, int no_follow, nfs_cb cb, void *private_data)
1552 {
1553 if (nfs_lookuppath_async(nfs, path, no_follow, cb, private_data, nfs_stat64_continue_internal, NULL, NULL, 0) != 0) {
1554 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
1555 return -1;
1556 }
1557
1558 return 0;
1559 }
1560
1561 int nfs_stat64_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
1562 {
1563 return nfs_stat64_async_internal(nfs, path, 0, cb, private_data);
1564 }
1565
1566 int nfs_lstat64_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
1567 {
1568 return nfs_stat64_async_internal(nfs, path, 1, cb, private_data);
1569 }
1570
1571 /*
1572 * Async open()
1573 */
1574 static void nfs_open_trunc_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1575 {
1576 struct nfs_cb_data *data = private_data;
1577 struct nfs_context *nfs = data->nfs;
1578 struct nfsfh *nfsfh;
1579 SETATTR3res *res;
1580
1581 assert(rpc->magic == RPC_CONTEXT_MAGIC);
1582
1583 if (status == RPC_STATUS_ERROR) {
1584 data->cb(-EFAULT, nfs, command_data, data->private_data);
1585 free_nfs_cb_data(data);
1586 return;
1587 }
1588 if (status == RPC_STATUS_CANCEL) {
1589 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1590 free_nfs_cb_data(data);
1591 return;
1592 }
1593
1594 res = command_data;
1595 if (res->status != NFS3_OK) {
1596 rpc_set_error(nfs->rpc, "NFS: Setattr failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1597 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1598 free_nfs_cb_data(data);
1599 return;
1600 }
1601
1602 nfsfh = malloc(sizeof(struct nfsfh));
1603 if (nfsfh == NULL) {
1604 rpc_set_error(nfs->rpc, "NFS: Failed to allocate nfsfh structure");
1605 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1606 free_nfs_cb_data(data);
1607 return;
1608 }
1609 memset(nfsfh, 0, sizeof(struct nfsfh));
1610
1611 if (data->continue_int & O_SYNC) {
1612 nfsfh->is_sync = 1;
1613 }
1614 if (data->continue_int & O_APPEND) {
1615 nfsfh->is_append = 1;
1616 }
1617
1618 /* steal the filehandle */
1619 nfsfh->fh = data->fh;
1620 data->fh.data.data_val = NULL;
1621
1622 data->cb(0, nfs, nfsfh, data->private_data);
1623 free_nfs_cb_data(data);
1624 }
1625
1626 static void nfs_open_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1627 {
1628 ACCESS3res *res;
1629 struct nfs_cb_data *data = private_data;
1630 struct nfs_context *nfs = data->nfs;
1631 struct nfsfh *nfsfh;
1632 unsigned int nfsmode = 0;
1633
1634 assert(rpc->magic == RPC_CONTEXT_MAGIC);
1635
1636 if (status == RPC_STATUS_ERROR) {
1637 data->cb(-EFAULT, nfs, command_data, data->private_data);
1638 free_nfs_cb_data(data);
1639 return;
1640 }
1641 if (status == RPC_STATUS_CANCEL) {
1642 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1643 free_nfs_cb_data(data);
1644 return;
1645 }
1646
1647 res = command_data;
1648 if (res->status != NFS3_OK) {
1649 rpc_set_error(nfs->rpc, "NFS: ACCESS of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1650 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1651 free_nfs_cb_data(data);
1652 return;
1653 }
1654
1655 if (data->continue_int & O_WRONLY) {
1656 nfsmode |= ACCESS3_MODIFY;
1657 }
1658 if (data->continue_int & O_RDWR) {
1659 nfsmode |= ACCESS3_READ|ACCESS3_MODIFY;
1660 }
1661 if (!(data->continue_int & (O_WRONLY|O_RDWR))) {
1662 nfsmode |= ACCESS3_READ;
1663 }
1664
1665
1666 if (res->ACCESS3res_u.resok.access != nfsmode) {
1667 rpc_set_error(nfs->rpc, "NFS: ACCESS denied. Required access %c%c%c. Allowed access %c%c%c",
1668 nfsmode&ACCESS3_READ?'r':'-',
1669 nfsmode&ACCESS3_MODIFY?'w':'-',
1670 nfsmode&ACCESS3_EXECUTE?'x':'-',
1671 res->ACCESS3res_u.resok.access&ACCESS3_READ?'r':'-',
1672 res->ACCESS3res_u.resok.access&ACCESS3_MODIFY?'w':'-',
1673 res->ACCESS3res_u.resok.access&ACCESS3_EXECUTE?'x':'-');
1674 data->cb(-EACCES, nfs, rpc_get_error(nfs->rpc), data->private_data);
1675 free_nfs_cb_data(data);
1676 return;
1677 }
1678
1679 /* Try to truncate it if we were requested to */
1680 if ((data->continue_int & O_TRUNC) &&
1681 (data->continue_int & (O_RDWR|O_WRONLY))) {
1682 SETATTR3args args;
1683
1684 memset(&args, 0, sizeof(SETATTR3args));
1685 args.object = data->fh;
1686 args.new_attributes.size.set_it = 1;
1687 args.new_attributes.size.set_size3_u.size = 0;
1688
1689 if (rpc_nfs3_setattr_async(nfs->rpc, nfs_open_trunc_cb, &args,
1690 data) != 0) {
1691 rpc_set_error(nfs->rpc, "RPC error: Failed to send "
1692 "SETATTR call for %s", data->path);
1693 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc),
1694 data->private_data);
1695 free_nfs_cb_data(data);
1696 return;
1697 }
1698 return;
1699 }
1700
1701 nfsfh = malloc(sizeof(struct nfsfh));
1702 if (nfsfh == NULL) {
1703 rpc_set_error(nfs->rpc, "NFS: Failed to allocate nfsfh structure");
1704 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1705 free_nfs_cb_data(data);
1706 return;
1707 }
1708 memset(nfsfh, 0, sizeof(struct nfsfh));
1709
1710 if (data->continue_int & O_SYNC) {
1711 nfsfh->is_sync = 1;
1712 }
1713 if (data->continue_int & O_APPEND) {
1714 nfsfh->is_append = 1;
1715 }
1716
1717 /* steal the filehandle */
1718 nfsfh->fh = data->fh;
1719 data->fh.data.data_val = NULL;
1720
1721 data->cb(0, nfs, nfsfh, data->private_data);
1722 free_nfs_cb_data(data);
1723 }
1724
1725 static int nfs_open_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
1726 {
1727 int nfsmode = 0;
1728 ACCESS3args args;
1729
1730 if (data->continue_int & O_WRONLY) {
1731 nfsmode |= ACCESS3_MODIFY;
1732 }
1733 if (data->continue_int & O_RDWR) {
1734 nfsmode |= ACCESS3_READ|ACCESS3_MODIFY;
1735 }
1736 if (!(data->continue_int & (O_WRONLY|O_RDWR))) {
1737 nfsmode |= ACCESS3_READ;
1738 }
1739
1740 memset(&args, 0, sizeof(ACCESS3args));
1741 args.object = data->fh;
1742 args.access = nfsmode;
1743
1744 if (rpc_nfs3_access_async(nfs->rpc, nfs_open_cb, &args, data) != 0) {
1745 rpc_set_error(nfs->rpc, "RPC error: Failed to send OPEN ACCESS "
1746 "call for %s", data->path);
1747 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc),
1748 data->private_data);
1749 free_nfs_cb_data(data);
1750 return -1;
1751 }
1752 return 0;
1753 }
1754
1755 int nfs_open_async(struct nfs_context *nfs, const char *path, int flags, nfs_cb cb, void *private_data)
1756 {
1757 if (nfs_lookuppath_async(nfs, path, 0, cb, private_data, nfs_open_continue_internal, NULL, NULL, flags) != 0) {
1758 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
1759 return -1;
1760 }
1761
1762 return 0;
1763 }
1764
1765
1766 /*
1767 * Async chdir()
1768 */
1769 static int nfs_chdir_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
1770 {
1771 /* steal saved_path */
1772 free(nfs->cwd);
1773 nfs->cwd = data->saved_path;
1774 data->saved_path = NULL;
1775
1776 data->cb(0, nfs, NULL, data->private_data);
1777 free_nfs_cb_data(data);
1778
1779 return 0;
1780 }
1781
1782 int nfs_chdir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
1783 {
1784 if (nfs_lookuppath_async(nfs, path, 0, cb, private_data, nfs_chdir_continue_internal, NULL, NULL, 0) != 0) {
1785 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
1786 return -1;
1787 }
1788
1789 return 0;
1790 }
1791
1792
1793 /*
1794 * Async pread()
1795 */
1796 static void nfs_fill_READ3args(READ3args *args, struct nfsfh *fh, uint64_t offset, uint64_t count)
1797 {
1798 memset(args, 0, sizeof(READ3args));
1799 args->file = fh->fh;
1800 args->offset = offset;
1801 args->count = count;
1802 }
1803
1804 static void nfs_pread_mcb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1805 {
1806 struct nfs_mcb_data *mdata = private_data;
1807 struct nfs_cb_data *data = mdata->data;
1808 struct nfs_context *nfs = data->nfs;
1809 READ3res *res;
1810 int cb_err;
1811 void *cb_data;
1812
1813 assert(rpc->magic == RPC_CONTEXT_MAGIC);
1814
1815 data->num_calls--;
1816
1817 if (status == RPC_STATUS_ERROR) {
1818 /* flag the failure but do not invoke callback until we have received all responses */
1819 data->error = 1;
1820 }
1821 if (status == RPC_STATUS_CANCEL) {
1822 /* flag the cancellation but do not invoke callback until we have received all responses */
1823 data->cancel = 1;
1824 }
1825
1826 if (status == RPC_STATUS_SUCCESS) {
1827 res = command_data;
1828 if (res->status != NFS3_OK) {
1829 rpc_set_error(nfs->rpc, "NFS: Read failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1830 data->error = 1;
1831 } else {
1832 uint64_t count = res->READ3res_u.resok.count;
1833
1834 if (mdata->update_pos)
1835 data->nfsfh->offset += count;
1836
1837 /* if we have more than one call or we have received a short read we need a reassembly buffer */
1838 if (data->num_calls || (count < mdata->count && !res->READ3res_u.resok.eof)) {
1839 if (data->buffer == NULL) {
1840 data->buffer = malloc(data->count);
1841 if (data->buffer == NULL) {
1842 rpc_set_error(nfs->rpc, "Out-Of-Memory: Failed to allocate reassembly buffer for %d bytes", (int)data->count);
1843 data->oom = 1;
1844 }
1845 }
1846 }
1847 if (count > 0) {
1848 if (count <= mdata->count) {
1849 /* copy data into reassembly buffer if we have one */
1850 if (data->buffer != NULL) {
1851 memcpy(&data->buffer[mdata->offset - data->offset], res->READ3res_u.resok.data.data_val, count);
1852 }
1853 if (data->max_offset < mdata->offset + count) {
1854 data->max_offset = mdata->offset + count;
1855 }
1856 } else {
1857 rpc_set_error(nfs->rpc, "NFS: Read overflow. Server has sent more data than requested!");
1858 data->error = 1;
1859 }
1860 }
1861 /* check if we have received a short read */
1862 if (count < mdata->count && !res->READ3res_u.resok.eof) {
1863 if (count == 0) {
1864 rpc_set_error(nfs->rpc, "NFS: Read failed. No bytes read and not at EOF!");
1865 data->error = 1;
1866 } else {
1867 /* reissue reminder of this read request */
1868 READ3args args;
1869 mdata->offset += count;
1870 mdata->count -= count;
1871 nfs_fill_READ3args(&args, data->nfsfh, mdata->offset, mdata->count);
1872 if (rpc_nfs3_read_async(nfs->rpc, nfs_pread_mcb, &args, mdata) == 0) {
1873 data->num_calls++;
1874 return;
1875 } else {
1876 rpc_set_error(nfs->rpc, "RPC error: Failed to send READ call for %s", data->path);
1877 data->oom = 1;
1878 }
1879 }
1880 }
1881 }
1882 }
1883
1884 free(mdata);
1885
1886 if (data->num_calls > 0) {
1887 /* still waiting for more replies */
1888 return;
1889 }
1890 if (data->oom != 0) {
1891 data->cb(-ENOMEM, nfs, command_data, data->private_data);
1892 free_nfs_cb_data(data);
1893 return;
1894 }
1895 if (data->error != 0) {
1896 data->cb(-EFAULT, nfs, command_data, data->private_data);
1897 free_nfs_cb_data(data);
1898 return;
1899 }
1900 if (data->cancel != 0) {
1901 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1902 free_nfs_cb_data(data);
1903 return;
1904 }
1905
1906 if (data->buffer) {
1907 if (data->max_offset > data->org_offset + data->org_count) {
1908 data->max_offset = data->org_offset + data->org_count;
1909 }
1910 cb_err = data->max_offset - data->org_offset;
1911 cb_data = data->buffer + (data->org_offset - data->offset);
1912 } else {
1913 cb_err = res->READ3res_u.resok.count;
1914 cb_data = res->READ3res_u.resok.data.data_val;
1915 }
1916
1917 data->nfsfh->ra.fh_offset = data->max_offset;
1918 if (data->nfsfh->ra.cur_ra) {
1919 free(data->nfsfh->ra.buf);
1920 data->nfsfh->ra.buf = data->buffer;
1921 data->nfsfh->ra.buf_offset = data->offset;
1922 data->nfsfh->ra.buf_count = data->count;
1923 data->nfsfh->ra.buf_ts = time(NULL);
1924 data->buffer = NULL;
1925 }
1926
1927 data->cb(cb_err, nfs, cb_data, data->private_data);
1928 free_nfs_cb_data(data);
1929 }
1930
1931 static void nfs_ra_invalidate(struct nfsfh *nfsfh) {
1932 free(nfsfh->ra.buf);
1933 nfsfh->ra.buf = NULL;
1934 nfsfh->ra.buf_offset = 0;
1935 nfsfh->ra.buf_count = 0;
1936 nfsfh->ra.buf_ts = time(NULL);
1937 nfsfh->ra.cur_ra = NFS_BLKSIZE;
1938 }
1939
1940 static int nfs_pread_async_internal(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t offset, uint64_t count, nfs_cb cb, void *private_data, int update_pos)
1941 {
1942 struct nfs_cb_data *data;
1943
1944 data = malloc(sizeof(struct nfs_cb_data));
1945 if (data == NULL) {
1946 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
1947 return -1;
1948 }
1949 memset(data, 0, sizeof(struct nfs_cb_data));
1950 data->nfs = nfs;
1951 data->cb = cb;
1952 data->private_data = private_data;
1953 data->nfsfh = nfsfh;
1954 data->org_offset = offset;
1955 data->org_count = count;
1956
1957 assert(data->num_calls == 0);
1958
1959 if (nfs->rpc->readahead && time(NULL) - nfsfh->ra.buf_ts > NFS_RA_TIMEOUT) {
1960 /* readahead cache timeout */
1961 nfs_ra_invalidate(nfsfh);
1962 }
1963
1964 if (nfs->rpc->readahead) {
1965 if (offset >= nfsfh->ra.last_offset &&
1966 offset - NFS_BLKSIZE <= nfsfh->ra.fh_offset + nfsfh->ra.cur_ra) {
1967 if (nfs->rpc->readahead > nfsfh->ra.cur_ra) {
1968 nfsfh->ra.cur_ra <<= 1;
1969 }
1970 } else {
1971 nfsfh->ra.cur_ra = NFS_BLKSIZE;
1972 }
1973
1974 nfsfh->ra.last_offset = offset;
1975
1976 if (nfsfh->ra.buf_offset <= offset &&
1977 nfsfh->ra.buf_offset + nfsfh->ra.buf_count >= offset + count) {
1978 /* serve request completely from cache */
1979 data->buffer = malloc(count);
1980 if (data->buffer == NULL) {
1981 free_nfs_cb_data(data);
1982 return -ENOMEM;
1983 }
1984 memcpy(data->buffer, nfsfh->ra.buf + (offset - nfsfh->ra.buf_offset), count);
1985 data->cb(count, nfs, data->buffer, data->private_data);
1986 nfsfh->ra.fh_offset = offset + count;
1987 free_nfs_cb_data(data);
1988 return 0;
1989 }
1990
1991 /* align start offset to blocksize */
1992 count += offset & (NFS_BLKSIZE - 1);
1993 offset &= ~(NFS_BLKSIZE - 1);
1994
1995 /* align end offset to blocksize and add readahead */
1996 count += nfsfh->ra.cur_ra - 1;
1997 count &= ~(NFS_BLKSIZE - 1);
1998
1999 data->buffer = malloc(count);
2000 if (data->buffer == NULL) {
2001 free_nfs_cb_data(data);
2002 return -ENOMEM;
2003 }
2004 data->offset = offset;
2005 data->count = count;
2006
2007 if (nfsfh->ra.buf_count && nfsfh->ra.buf_offset <= offset &&
2008 nfsfh->ra.buf_offset + nfsfh->ra.buf_count >= offset) {
2009 /* serve request partially from cache */
2010 size_t overlap = (nfsfh->ra.buf_offset + nfsfh->ra.buf_count) - offset;
2011 if (overlap > count) count = overlap;
2012 memcpy(data->buffer, nfsfh->ra.buf + (offset - nfsfh->ra.buf_offset), overlap);
2013 offset += overlap;
2014 count -= overlap;
2015 }
2016 } else {
2017 data->offset = offset;
2018 data->count = count;
2019 }
2020
2021 data->max_offset = offset;
2022
2023 /* chop requests into chunks of at most READMAX bytes if necessary.
2024 * we send all reads in parallel so that performance is still good.
2025 */
2026 do {
2027 uint64_t readcount = count;
2028 struct nfs_mcb_data *mdata;
2029 READ3args args;
2030
2031 if (readcount > nfs_get_readmax(nfs)) {
2032 readcount = nfs_get_readmax(nfs);
2033 }
2034
2035 mdata = malloc(sizeof(struct nfs_mcb_data));
2036 if (mdata == NULL) {
2037 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_mcb_data structure");
2038 if (data->num_calls == 0) {
2039 free_nfs_cb_data(data);
2040 return -1;
2041 }
2042 data->oom = 1;
2043 break;
2044 }
2045 memset(mdata, 0, sizeof(struct nfs_mcb_data));
2046 mdata->data = data;
2047 mdata->offset = offset;
2048 mdata->count = readcount;
2049 mdata->update_pos = update_pos;
2050
2051 nfs_fill_READ3args(&args, nfsfh, offset, readcount);
2052
2053 if (rpc_nfs3_read_async(nfs->rpc, nfs_pread_mcb, &args, mdata) != 0) {
2054 rpc_set_error(nfs->rpc, "RPC error: Failed to send READ call for %s", data->path);
2055 free(mdata);
2056 if (data->num_calls == 0) {
2057 free_nfs_cb_data(data);
2058 return -1;
2059 }
2060 data->oom = 1;
2061 break;
2062 }
2063
2064 count -= readcount;
2065 offset += readcount;
2066 data->num_calls++;
2067 } while (count > 0);
2068
2069 return 0;
2070 }
2071
2072 int nfs_pread_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t offset, uint64_t count, nfs_cb cb, void *private_data)
2073 {
2074 return nfs_pread_async_internal(nfs, nfsfh, offset, count, cb, private_data, 0);
2075 }
2076
2077 /*
2078 * Async read()
2079 */
2080 int nfs_read_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t count, nfs_cb cb, void *private_data)
2081 {
2082 return nfs_pread_async_internal(nfs, nfsfh, nfsfh->offset, count, cb, private_data, 1);
2083 }
2084
2085
2086
2087 /*
2088 * Async pwrite()
2089 */
2090 static void nfs_fill_WRITE3args (WRITE3args *args, struct nfsfh *fh, uint64_t offset, uint64_t count,
2091 void *buf)
2092 {
2093 memset(args, 0, sizeof(WRITE3args));
2094 args->file = fh->fh;
2095 args->offset = offset;
2096 args->count = count;
2097 args->stable = fh->is_sync ? FILE_SYNC : UNSTABLE;
2098 args->data.data_len = count;
2099 args->data.data_val = buf;
2100 }
2101
2102 static void nfs_pwrite_mcb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2103 {
2104 struct nfs_mcb_data *mdata = private_data;
2105 struct nfs_cb_data *data = mdata->data;
2106 struct nfs_context *nfs = data->nfs;
2107 WRITE3res *res;
2108
2109 assert(rpc->magic == RPC_CONTEXT_MAGIC);
2110
2111 data->num_calls--;
2112
2113 if (status == RPC_STATUS_ERROR) {
2114 /* flag the failure but do not invoke callback until we have received all responses */
2115 data->error = 1;
2116 }
2117 if (status == RPC_STATUS_CANCEL) {
2118 /* flag the cancellation but do not invoke callback until we have received all responses */
2119 data->cancel = 1;
2120 }
2121
2122 if (status == RPC_STATUS_SUCCESS) {
2123 res = command_data;
2124 if (res->status != NFS3_OK) {
2125 rpc_set_error(nfs->rpc, "NFS: Write failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2126 data->error = 1;
2127 } else {
2128 uint64_t count = res->WRITE3res_u.resok.count;
2129
2130 if (mdata->update_pos)
2131 data->nfsfh->offset += count;
2132
2133 if (count < mdata->count) {
2134 if (count == 0) {
2135 rpc_set_error(nfs->rpc, "NFS: Write failed. No bytes written!");
2136 data->error = 1;
2137 } else {
2138 /* reissue reminder of this write request */
2139 WRITE3args args;
2140 mdata->offset += count;
2141 mdata->count -= count;
2142
2143 nfs_fill_WRITE3args(&args, data->nfsfh, mdata->offset, mdata->count,
2144 &data->usrbuf[mdata->offset - data->offset]);
2145 if (rpc_nfs3_write_async(nfs->rpc, nfs_pwrite_mcb, &args, mdata) == 0) {
2146 data->num_calls++;
2147 return;
2148 } else {
2149 rpc_set_error(nfs->rpc, "RPC error: Failed to send WRITE call for %s", data->path);
2150 data->oom = 1;
2151 }
2152 }
2153 }
2154 if (count > 0) {
2155 if (data->max_offset < mdata->offset + count) {
2156 data->max_offset = mdata->offset + count;
2157 }
2158 }
2159 }
2160 }
2161
2162 free(mdata);
2163
2164 if (data->num_calls > 0) {
2165 /* still waiting for more replies */
2166 return;
2167 }
2168 if (data->oom != 0) {
2169 data->cb(-ENOMEM, nfs, command_data, data->private_data);
2170 free_nfs_cb_data(data);
2171 return;
2172 }
2173 if (data->error != 0) {
2174 data->cb(-EFAULT, nfs, command_data, data->private_data);
2175 free_nfs_cb_data(data);
2176 return;
2177 }
2178 if (data->cancel != 0) {
2179 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2180 free_nfs_cb_data(data);
2181 return;
2182 }
2183
2184 data->cb(data->max_offset - data->offset, nfs, NULL, data->private_data);
2185
2186 free_nfs_cb_data(data);
2187 }
2188
2189
2190 static int nfs_pwrite_async_internal(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t offset, uint64_t count, char *buf, nfs_cb cb, void *private_data, int update_pos)
2191 {
2192 struct nfs_cb_data *data;
2193
2194 data = malloc(sizeof(struct nfs_cb_data));
2195 if (data == NULL) {
2196 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
2197 return -1;
2198 }
2199 memset(data, 0, sizeof(struct nfs_cb_data));
2200 data->nfs = nfs;
2201 data->cb = cb;
2202 data->private_data = private_data;
2203 data->nfsfh = nfsfh;
2204 data->usrbuf = buf;
2205
2206 /* hello, clang-analyzer */
2207 assert(data->num_calls == 0);
2208
2209 /* chop requests into chunks of at most WRITEMAX bytes if necessary.
2210 * we send all writes in parallel so that performance is still good.
2211 */
2212 data->max_offset = offset;
2213 data->offset = offset;
2214
2215 do {
2216 uint64_t writecount = count;
2217 struct nfs_mcb_data *mdata;
2218 WRITE3args args;
2219
2220 if (writecount > nfs_get_writemax(nfs)) {
2221 writecount = nfs_get_writemax(nfs);
2222 }
2223
2224 mdata = malloc(sizeof(struct nfs_mcb_data));
2225 if (mdata == NULL) {
2226 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_mcb_data structure");
2227 if (data->num_calls == 0) {
2228 free_nfs_cb_data(data);
2229 return -1;
2230 }
2231 data->oom = 1;
2232 break;
2233 }
2234 memset(mdata, 0, sizeof(struct nfs_mcb_data));
2235 mdata->data = data;
2236 mdata->offset = offset;
2237 mdata->count = writecount;
2238 mdata->update_pos = update_pos;
2239
2240 nfs_fill_WRITE3args(&args, nfsfh, offset, writecount, &buf[offset - data->offset]);
2241
2242 if (rpc_nfs3_write_async(nfs->rpc, nfs_pwrite_mcb, &args, mdata) != 0) {
2243 rpc_set_error(nfs->rpc, "RPC error: Failed to send WRITE call for %s", data->path);
2244 free(mdata);
2245 if (data->num_calls == 0) {
2246 free_nfs_cb_data(data);
2247 return -1;
2248 }
2249 data->oom = 1;
2250 break;
2251 }
2252
2253 count -= writecount;
2254 offset += writecount;
2255 data->num_calls++;
2256 } while (count > 0);
2257
2258 return 0;
2259 }
2260
2261 int nfs_pwrite_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t offset, uint64_t count, char *buf, nfs_cb cb, void *private_data)
2262 {
2263 return nfs_pwrite_async_internal(nfs, nfsfh, offset, count, buf, cb, private_data, 0);
2264 }
2265
2266 /*
2267 * Async write()
2268 */
2269 static void nfs_write_append_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2270 {
2271 struct nfs_cb_data *data = private_data;
2272 struct nfs_context *nfs = data->nfs;
2273 GETATTR3res *res;
2274
2275 assert(rpc->magic == RPC_CONTEXT_MAGIC);
2276
2277 if (status == RPC_STATUS_ERROR) {
2278 data->cb(-EFAULT, nfs, command_data, data->private_data);
2279 free_nfs_cb_data(data);
2280 return;
2281 }
2282 if (status == RPC_STATUS_CANCEL) {
2283 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2284 free_nfs_cb_data(data);
2285 return;
2286 }
2287
2288 res = command_data;
2289 if (res->status != NFS3_OK) {
2290 rpc_set_error(nfs->rpc, "NFS: GETATTR failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2291 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2292 free_nfs_cb_data(data);
2293 return;
2294 }
2295
2296 if (nfs_pwrite_async_internal(nfs, data->nfsfh, res->GETATTR3res_u.resok.obj_attributes.size, data->count, data->usrbuf, data->cb, data->private_data, 1) != 0) {
2297 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2298 free_nfs_cb_data(data);
2299 return;
2300 }
2301 free_nfs_cb_data(data);
2302 }
2303
2304 int nfs_write_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t count, char *buf, nfs_cb cb, void *private_data)
2305 {
2306 nfs_ra_invalidate(nfsfh);
2307 if (nfsfh->is_append) {
2308 struct GETATTR3args args;
2309 struct nfs_cb_data *data;
2310
2311 data = malloc(sizeof(struct nfs_cb_data));
2312 if (data == NULL) {
2313 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
2314 return -1;
2315 }
2316 memset(data, 0, sizeof(struct nfs_cb_data));
2317 data->nfs = nfs;
2318 data->cb = cb;
2319 data->private_data = private_data;
2320 data->nfsfh = nfsfh;
2321 data->usrbuf = buf;
2322 data->count = count;
2323
2324 memset(&args, 0, sizeof(GETATTR3args));
2325 args.object = nfsfh->fh;
2326
2327 if (rpc_nfs3_getattr_async(nfs->rpc, nfs_write_append_cb, &args, data) != 0) {
2328 rpc_set_error(nfs->rpc, "out of memory: failed to send GETATTR");
2329 free_nfs_cb_data(data);
2330 return -1;
2331 }
2332 return 0;
2333 }
2334 return nfs_pwrite_async_internal(nfs, nfsfh, nfsfh->offset, count, buf, cb, private_data, 1);
2335 }
2336
2337
2338
2339
2340 /*
2341 * close
2342 */
2343
2344 int nfs_close_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data)
2345 {
2346 free_nfsfh(nfsfh);
2347 cb(0, nfs, NULL, private_data);
2348 return 0;
2349 };
2350
2351
2352
2353
2354
2355 /*
2356 * Async fstat()
2357 */
2358 int nfs_fstat_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data)
2359 {
2360 struct nfs_cb_data *data;
2361 struct GETATTR3args args;
2362
2363 data = malloc(sizeof(struct nfs_cb_data));
2364 if (data == NULL) {
2365 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
2366 return -1;
2367 }
2368 memset(data, 0, sizeof(struct nfs_cb_data));
2369 data->nfs = nfs;
2370 data->cb = cb;
2371 data->private_data = private_data;
2372
2373 memset(&args, 0, sizeof(GETATTR3args));
2374 args.object = nfsfh->fh;
2375
2376 if (rpc_nfs3_getattr_async(nfs->rpc, nfs_stat_1_cb, &args, data) != 0) {
2377 rpc_set_error(nfs->rpc, "RPC error: Failed to send STAT GETATTR call for %s", data->path);
2378 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2379 free_nfs_cb_data(data);
2380 return -1;
2381 }
2382 return 0;
2383 }
2384
2385 /*
2386 * Async fstat64()
2387 */
2388 int nfs_fstat64_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data)
2389 {
2390 struct nfs_cb_data *data;
2391 struct GETATTR3args args;
2392
2393 data = malloc(sizeof(struct nfs_cb_data));
2394 if (data == NULL) {
2395 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
2396 return -1;
2397 }
2398 memset(data, 0, sizeof(struct nfs_cb_data));
2399 data->nfs = nfs;
2400 data->cb = cb;
2401 data->private_data = private_data;
2402
2403 memset(&args, 0, sizeof(GETATTR3args));
2404 args.object = nfsfh->fh;
2405
2406 if (rpc_nfs3_getattr_async(nfs->rpc, nfs_stat64_1_cb, &args, data) != 0) {
2407 rpc_set_error(nfs->rpc, "RPC error: Failed to send STAT GETATTR call for %s", data->path);
2408 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2409 free_nfs_cb_data(data);
2410 return -1;
2411 }
2412 return 0;
2413 }
2414
2415
2416
2417 /*
2418 * Async fsync()
2419 */
2420 static void nfs_fsync_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2421 {
2422 struct nfs_cb_data *data = private_data;
2423 struct nfs_context *nfs = data->nfs;
2424 COMMIT3res *res;
2425
2426 assert(rpc->magic == RPC_CONTEXT_MAGIC);
2427
2428 if (status == RPC_STATUS_ERROR) {
2429 data->cb(-EFAULT, nfs, command_data, data->private_data);
2430 free_nfs_cb_data(data);
2431 return;
2432 }
2433 if (status == RPC_STATUS_CANCEL) {
2434 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2435 free_nfs_cb_data(data);
2436 return;
2437 }
2438
2439 res = command_data;
2440 if (res->status != NFS3_OK) {
2441 rpc_set_error(nfs->rpc, "NFS: Commit failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2442 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2443 free_nfs_cb_data(data);
2444 return;
2445 }
2446
2447 data->cb(0, nfs, NULL, data->private_data);
2448 free_nfs_cb_data(data);
2449 }
2450
2451 int nfs_fsync_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data)
2452 {
2453 struct nfs_cb_data *data;
2454 struct COMMIT3args args;
2455
2456 data = malloc(sizeof(struct nfs_cb_data));
2457 if (data == NULL) {
2458 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
2459 return -1;
2460 }
2461 memset(data, 0, sizeof(struct nfs_cb_data));
2462 data->nfs = nfs;
2463 data->cb = cb;
2464 data->private_data = private_data;
2465
2466 args.file = nfsfh->fh;
2467 args.offset = 0;
2468 args.count = 0;
2469 if (rpc_nfs3_commit_async(nfs->rpc, nfs_fsync_cb, &args, data) != 0) {
2470 rpc_set_error(nfs->rpc, "RPC error: Failed to send COMMIT call for %s", data->path);
2471 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2472 free_nfs_cb_data(data);
2473 return -1;
2474 }
2475 return 0;
2476 }
2477
2478
2479
2480
2481 /*
2482 * Async ftruncate()
2483 */
2484 static void nfs_ftruncate_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2485 {
2486 struct nfs_cb_data *data = private_data;
2487 struct nfs_context *nfs = data->nfs;
2488 SETATTR3res *res;
2489
2490 assert(rpc->magic == RPC_CONTEXT_MAGIC);
2491
2492 if (status == RPC_STATUS_ERROR) {
2493 data->cb(-EFAULT, nfs, command_data, data->private_data);
2494 free_nfs_cb_data(data);
2495 return;
2496 }
2497 if (status == RPC_STATUS_CANCEL) {
2498 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2499 free_nfs_cb_data(data);
2500 return;
2501 }
2502
2503 res = command_data;
2504 if (res->status != NFS3_OK) {
2505 rpc_set_error(nfs->rpc, "NFS: Setattr failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2506 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2507 free_nfs_cb_data(data);
2508 return;
2509 }
2510
2511 data->cb(0, nfs, NULL, data->private_data);
2512 free_nfs_cb_data(data);
2513 }
2514
2515 int nfs_ftruncate_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t length, nfs_cb cb, void *private_data)
2516 {
2517 struct nfs_cb_data *data;
2518 SETATTR3args args;
2519
2520 data = malloc(sizeof(struct nfs_cb_data));
2521 if (data == NULL) {
2522 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
2523 return -1;
2524 }
2525 memset(data, 0, sizeof(struct nfs_cb_data));
2526 data->nfs = nfs;
2527 data->cb = cb;
2528 data->private_data = private_data;
2529
2530 memset(&args, 0, sizeof(SETATTR3args));
2531 args.object = nfsfh->fh;
2532 args.new_attributes.size.set_it = 1;
2533 args.new_attributes.size.set_size3_u.size = length;
2534
2535 if (rpc_nfs3_setattr_async(nfs->rpc, nfs_ftruncate_cb, &args, data) != 0) {
2536 rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
2537 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2538 free_nfs_cb_data(data);
2539 return -1;
2540 }
2541 return 0;
2542 }
2543
2544
2545 /*
2546 * Async truncate()
2547 */
2548 static int nfs_truncate_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
2549 {
2550 uint64_t offset = data->continue_int;
2551 struct nfsfh nfsfh;
2552
2553 nfsfh.fh = data->fh;
2554
2555 if (nfs_ftruncate_async(nfs, &nfsfh, offset, data->cb, data->private_data) != 0) {
2556 rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
2557 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2558 free_nfs_cb_data(data);
2559 return -1;
2560 }
2561 free_nfs_cb_data(data);
2562 return 0;
2563 }
2564
2565 int nfs_truncate_async(struct nfs_context *nfs, const char *path, uint64_t length, nfs_cb cb, void *private_data)
2566 {
2567 uint64_t offset;
2568
2569 offset = length;
2570
2571 if (nfs_lookuppath_async(nfs, path, 0, cb, private_data, nfs_truncate_continue_internal, NULL, NULL, offset) != 0) {
2572 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
2573 return -1;
2574 }
2575
2576 return 0;
2577 }
2578
2579
2580
2581
2582 /*
2583 * Async mkdir()
2584 */
2585 static void nfs_mkdir_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2586 {
2587 MKDIR3res *res;
2588 struct nfs_cb_data *data = private_data;
2589 struct nfs_context *nfs = data->nfs;
2590 char *str = data->continue_data;
2591
2592 assert(rpc->magic == RPC_CONTEXT_MAGIC);
2593
2594 str = &str[strlen(str) + 1];
2595
2596 if (status == RPC_STATUS_ERROR) {
2597 data->cb(-EFAULT, nfs, command_data, data->private_data);
2598 free_nfs_cb_data(data);
2599 return;
2600 }
2601 if (status == RPC_STATUS_CANCEL) {
2602 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2603 free_nfs_cb_data(data);
2604 return;
2605 }
2606
2607 res = command_data;
2608 if (res->status != NFS3_OK) {
2609 rpc_set_error(nfs->rpc, "NFS: MKDIR of %s/%s failed with %s(%d)", data->saved_path, str, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2610 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2611 free_nfs_cb_data(data);
2612 return;
2613 }
2614
2615 data->cb(0, nfs, NULL, data->private_data);
2616 free_nfs_cb_data(data);
2617 }
2618
2619 static int nfs_mkdir_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
2620 {
2621 char *str = data->continue_data;
2622 MKDIR3args args;
2623
2624 str = &str[strlen(str) + 1];
2625
2626 memset(&args, 0, sizeof(MKDIR3args));
2627 args.where.dir = data->fh;
2628 args.where.name = str;
2629 args.attributes.mode.set_it = 1;
2630 args.attributes.mode.set_mode3_u.mode = 0755;
2631
2632 if (rpc_nfs3_mkdir_async(nfs->rpc, nfs_mkdir_cb, &args, data) != 0) {
2633 rpc_set_error(nfs->rpc, "RPC error: Failed to send MKDIR call for %s", data->path);
2634 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2635 free_nfs_cb_data(data);
2636 return -1;
2637 }
2638 return 0;
2639 }
2640
2641 int nfs_mkdir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
2642 {
2643 char *new_path;
2644 char *ptr;
2645
2646 new_path = strdup(path);
2647 if (new_path == NULL) {
2648 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for path");
2649 return -1;
2650 }
2651
2652 ptr = strrchr(new_path, '/');
2653 if (ptr == NULL) {
2654 free(new_path);
2655 rpc_set_error(nfs->rpc, "Invalid path %s", path);
2656 return -1;
2657 }
2658 *ptr = 0;
2659
2660 /* new_path now points to the parent directory, and beyond the nul terminateor is the new directory to create */
2661 if (nfs_lookuppath_async(nfs, new_path, 0, cb, private_data, nfs_mkdir_continue_internal, new_path, free, 0) != 0) {
2662 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path component");
2663 return -1;
2664 }
2665
2666 return 0;
2667 }
2668
2669
2670
2671
2672
2673 /*
2674 * Async rmdir()
2675 */
2676 static void nfs_rmdir_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2677 {
2678 RMDIR3res *res;
2679 struct nfs_cb_data *data = private_data;
2680 struct nfs_context *nfs = data->nfs;
2681 char *str = data->continue_data;
2682
2683 assert(rpc->magic == RPC_CONTEXT_MAGIC);
2684
2685 str = &str[strlen(str) + 1];
2686
2687 if (status == RPC_STATUS_ERROR) {
2688 data->cb(-EFAULT, nfs, command_data, data->private_data);
2689 free_nfs_cb_data(data);
2690 return;
2691 }
2692 if (status == RPC_STATUS_CANCEL) {
2693 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2694 free_nfs_cb_data(data);
2695 return;
2696 }
2697
2698 res = command_data;
2699 if (res->status != NFS3_OK) {
2700 rpc_set_error(nfs->rpc, "NFS: RMDIR of %s/%s failed with %s(%d)", data->saved_path, str, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2701 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2702 free_nfs_cb_data(data);
2703 return;
2704 }
2705
2706 data->cb(0, nfs, NULL, data->private_data);
2707 free_nfs_cb_data(data);
2708 }
2709
2710 static int nfs_rmdir_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
2711 {
2712 char *str = data->continue_data;
2713 RMDIR3args args;
2714
2715 str = &str[strlen(str) + 1];
2716
2717 args.object.dir = data->fh;
2718 args.object.name = str;
2719 if (rpc_nfs3_rmdir_async(nfs->rpc, nfs_rmdir_cb, &args, data) != 0) {
2720 rpc_set_error(nfs->rpc, "RPC error: Failed to send RMDIR call for %s", data->path);
2721 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2722 free_nfs_cb_data(data);
2723 return -1;
2724 }
2725 return 0;
2726 }
2727
2728 int nfs_rmdir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
2729 {
2730 char *new_path;
2731 char *ptr;
2732
2733 new_path = strdup(path);
2734 if (new_path == NULL) {
2735 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for path");
2736 return -1;
2737 }
2738
2739 ptr = strrchr(new_path, '/');
2740 if (ptr == NULL) {
2741 free(new_path);
2742 rpc_set_error(nfs->rpc, "Invalid path %s", path);
2743 return -1;
2744 }
2745 *ptr = 0;
2746
2747 /* new_path now points to the parent directory, and beyond the nul terminateor is the new directory to create */
2748 if (nfs_lookuppath_async(nfs, new_path, 0, cb, private_data, nfs_rmdir_continue_internal, new_path, free, 0) != 0) {
2749 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
2750 return -1;
2751 }
2752
2753 return 0;
2754 }
2755
2756
2757
2758
2759 /*
2760 * Async creat()
2761 */
2762 struct create_cb_data {
2763 char *path;
2764 int flags;
2765 int mode;
2766 };
2767
2768 static void free_create_cb_data(void *ptr)
2769 {
2770 struct create_cb_data *data = ptr;
2771
2772 free(data->path);
2773 free(data);
2774 }
2775
2776 static void nfs_create_trunc_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2777 {
2778 struct nfs_cb_data *data = private_data;
2779 struct nfs_context *nfs = data->nfs;
2780 struct nfsfh *nfsfh;
2781 SETATTR3res *res;
2782
2783 assert(rpc->magic == RPC_CONTEXT_MAGIC);
2784
2785 if (status == RPC_STATUS_ERROR) {
2786 data->cb(-EFAULT, nfs, command_data, data->private_data);
2787 free_nfs_cb_data(data);
2788 free_nfsfh(nfsfh);
2789 return;
2790 }
2791 if (status == RPC_STATUS_CANCEL) {
2792 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2793 free_nfs_cb_data(data);
2794 free_nfsfh(nfsfh);
2795 return;
2796 }
2797
2798 res = command_data;
2799 if (res->status != NFS3_OK) {
2800 rpc_set_error(nfs->rpc, "NFS: Setattr failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2801 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2802 free_nfs_cb_data(data);
2803 free_nfsfh(nfsfh);
2804 return;
2805 }
2806
2807 data->cb(0, nfs, data->nfsfh, data->private_data);
2808 free_nfs_cb_data(data);
2809 }
2810
2811 static void nfs_create_2_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2812 {
2813 LOOKUP3res *res;
2814 struct nfs_cb_data *data = private_data;
2815 struct nfs_context *nfs = data->nfs;
2816 struct nfsfh *nfsfh;
2817 struct create_cb_data *cb_data = data->continue_data;
2818 char *str = cb_data->path;
2819
2820 assert(rpc->magic == RPC_CONTEXT_MAGIC);
2821
2822 if (status == RPC_STATUS_ERROR) {
2823 data->cb(-EFAULT, nfs, command_data, data->private_data);
2824 free_nfs_cb_data(data);
2825 return;
2826 }
2827 if (status == RPC_STATUS_CANCEL) {
2828 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2829 free_nfs_cb_data(data);
2830 return;
2831 }
2832
2833 str = &str[strlen(str) + 1];
2834 res = command_data;
2835 if (res->status != NFS3_OK) {
2836 rpc_set_error(nfs->rpc, "NFS: CREATE of %s/%s failed with %s(%d)", data->saved_path, str, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2837 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2838
2839 return;
2840 }
2841
2842 nfsfh = malloc(sizeof(struct nfsfh));
2843 if (nfsfh == NULL) {
2844 rpc_set_error(nfs->rpc, "NFS: Failed to allocate nfsfh structure");
2845 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2846 free_nfs_cb_data(data);
2847 return;
2848 }
2849 memset(nfsfh, 0, sizeof(struct nfsfh));
2850
2851 if (cb_data->flags & O_SYNC) {
2852 nfsfh->is_sync = 1;
2853 }
2854 if (cb_data->flags & O_APPEND) {
2855 nfsfh->is_append = 1;
2856 }
2857
2858 /* copy the filehandle */
2859 nfsfh->fh.data.data_len = res->LOOKUP3res_u.resok.object.data.data_len;
2860 nfsfh->fh.data.data_val = malloc(nfsfh->fh.data.data_len);
2861 if (nfsfh->fh.data.data_val == NULL) {
2862 rpc_set_error(nfs->rpc, "Out of memory: Failed to allocate fh structure");
2863 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2864 free_nfs_cb_data(data);
2865 free(nfsfh);
2866 return;
2867 }
2868 memcpy(nfsfh->fh.data.data_val, res->LOOKUP3res_u.resok.object.data.data_val, nfsfh->fh.data.data_len);
2869
2870 /* Try to truncate it if we were requested to */
2871 if (cb_data->flags & O_TRUNC) {
2872 SETATTR3args args;
2873
2874 data->nfsfh = nfsfh;
2875
2876 memset(&args, 0, sizeof(SETATTR3args));
2877 args.object = nfsfh->fh;
2878 args.new_attributes.size.set_it = 1;
2879 args.new_attributes.size.set_size3_u.size = 0;
2880
2881 if (rpc_nfs3_setattr_async(nfs->rpc, nfs_create_trunc_cb,
2882 &args, data) != 0) {
2883 rpc_set_error(nfs->rpc, "RPC error: Failed to send "
2884 "SETATTR call for %s", data->path);
2885 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc),
2886 data->private_data);
2887 free_nfs_cb_data(data);
2888 free_nfsfh(nfsfh);
2889 return;
2890 }
2891 return;
2892 }
2893
2894 data->cb(0, nfs, nfsfh, data->private_data);
2895 free_nfs_cb_data(data);
2896 }
2897
2898
2899
2900 static void nfs_create_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2901 {
2902 CREATE3res *res;
2903 struct nfs_cb_data *data = private_data;
2904 struct nfs_context *nfs = data->nfs;
2905 struct create_cb_data *cb_data = data->continue_data;
2906 char *str = cb_data->path;
2907 LOOKUP3args args;
2908
2909 assert(rpc->magic == RPC_CONTEXT_MAGIC);
2910
2911 if (status == RPC_STATUS_ERROR) {
2912 data->cb(-EFAULT, nfs, command_data, data->private_data);
2913 free_nfs_cb_data(data);
2914 return;
2915 }
2916 if (status == RPC_STATUS_CANCEL) {
2917 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2918 free_nfs_cb_data(data);
2919 return;
2920 }
2921
2922 str = &str[strlen(str) + 1];
2923 res = command_data;
2924 if (res->status != NFS3_OK) {
2925 rpc_set_error(nfs->rpc, "NFS: CREATE of %s/%s failed with %s(%d)", data->saved_path, str, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2926 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2927 free_nfs_cb_data(data);
2928 return;
2929 }
2930
2931 memset(&args, 0, sizeof(LOOKUP3args));
2932 args.what.dir = data->fh;
2933 args.what.name = str;
2934
2935 if (rpc_nfs3_lookup_async(nfs->rpc, nfs_create_2_cb, &args, data) != 0) {
2936 rpc_set_error(nfs->rpc, "RPC error: Failed to send lookup call for %s/%s", data->saved_path, str);
2937 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2938 free_nfs_cb_data(data);
2939 return;
2940 }
2941 return;
2942 }
2943
2944 static int nfs_create_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
2945 {
2946 struct create_cb_data *cb_data = data->continue_data;
2947 char *str = cb_data->path;
2948 CREATE3args args;
2949
2950 str = &str[strlen(str) + 1];
2951
2952 memset(&args, 0, sizeof(CREATE3args));
2953 args.where.dir = data->fh;
2954 args.where.name = str;
2955 args.how.mode = (cb_data->flags & O_EXCL) ? GUARDED : UNCHECKED;
2956 args.how.createhow3_u.obj_attributes.mode.set_it = 1;
2957 args.how.createhow3_u.obj_attributes.mode.set_mode3_u.mode = cb_data->mode;
2958
2959 if (rpc_nfs3_create_async(nfs->rpc, nfs_create_1_cb, &args, data) != 0) {
2960 rpc_set_error(nfs->rpc, "RPC error: Failed to send CREATE call for %s/%s", data->path, str);
2961 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2962 free_nfs_cb_data(data);
2963 return -1;
2964 }
2965 return 0;
2966 }
2967
2968 int nfs_create_async(struct nfs_context *nfs, const char *path, int flags, int mode, nfs_cb cb, void *private_data)
2969 {
2970 struct create_cb_data *cb_data;
2971 char *ptr;
2972
2973 cb_data = malloc(sizeof(struct create_cb_data));
2974 if (cb_data == NULL) {
2975 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for cb data");
2976 return -1;
2977 }
2978
2979 cb_data->path = strdup(path);
2980 if (cb_data->path == NULL) {
2981 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for path");
2982 free(cb_data);
2983 return -1;
2984 }
2985
2986 ptr = strrchr(cb_data->path, '/');
2987 if (ptr == NULL) {
2988 rpc_set_error(nfs->rpc, "Invalid path %s", path);
2989 free_create_cb_data(cb_data);
2990 return -1;
2991 }
2992 *ptr = 0;
2993
2994 cb_data->flags = flags;
2995 cb_data->mode = mode;
2996
2997 /* new_path now points to the parent directory, and beyond the nul terminator is the new directory to create */
2998 if (nfs_lookuppath_async(nfs, cb_data->path, 0, cb, private_data, nfs_create_continue_internal, cb_data, free_create_cb_data, 0) != 0) {
2999 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3000 return -1;
3001 }
3002
3003 return 0;
3004 }
3005
3006 int nfs_creat_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data)
3007 {
3008 return nfs_create_async(nfs, path, 0, mode, cb, private_data);
3009 }
3010
3011
3012
3013
3014 /*
3015 * Async unlink()
3016 */
3017 static void nfs_unlink_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3018 {
3019 REMOVE3res *res;
3020 struct nfs_cb_data *data = private_data;
3021 struct nfs_context *nfs = data->nfs;
3022 char *str = data->continue_data;
3023
3024 assert(rpc->magic == RPC_CONTEXT_MAGIC);
3025
3026 str = &str[strlen(str) + 1];
3027
3028 if (status == RPC_STATUS_ERROR) {
3029 data->cb(-EFAULT, nfs, command_data, data->private_data);
3030 free_nfs_cb_data(data);
3031 return;
3032 }
3033 if (status == RPC_STATUS_CANCEL) {
3034 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3035 free_nfs_cb_data(data);
3036 return;
3037 }
3038
3039 res = command_data;
3040 if (res->status != NFS3_OK) {
3041 rpc_set_error(nfs->rpc, "NFS: REMOVE of %s/%s failed with %s(%d)", data->saved_path, str, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
3042 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3043 free_nfs_cb_data(data);
3044 return;
3045 }
3046
3047 data->cb(0, nfs, NULL, data->private_data);
3048 free_nfs_cb_data(data);
3049 }
3050
3051 static int nfs_unlink_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
3052 {
3053 char *str = data->continue_data;
3054 struct REMOVE3args args;
3055
3056 str = &str[strlen(str) + 1];
3057
3058 args.object.dir = data->fh;
3059 args.object.name = str;
3060 if (rpc_nfs3_remove_async(nfs->rpc, nfs_unlink_cb, &args, data) != 0) {
3061 rpc_set_error(nfs->rpc, "RPC error: Failed to send REMOVE call for %s", data->path);
3062 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3063 free_nfs_cb_data(data);
3064 return -1;
3065 }
3066 return 0;
3067 }
3068
3069 int nfs_unlink_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
3070 {
3071 char *new_path;
3072 char *ptr;
3073
3074 new_path = strdup(path);
3075 if (new_path == NULL) {
3076 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for path");
3077 return -1;
3078 }
3079
3080 ptr = strrchr(new_path, '/');
3081 if (ptr == NULL) {
3082 free(new_path);
3083 rpc_set_error(nfs->rpc, "Invalid path %s", path);
3084 return -1;
3085 }
3086 *ptr = 0;
3087
3088 /* new_path now points to the parent directory, and beyond the nul terminateor is the new directory to create */
3089 if (nfs_lookuppath_async(nfs, new_path, 0, cb, private_data, nfs_unlink_continue_internal, new_path, free, 0) != 0) {
3090 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3091 return -1;
3092 }
3093
3094 return 0;
3095 }
3096
3097
3098 /*
3099 * Async mknod()
3100 */
3101 struct mknod_cb_data {
3102 char *path;
3103 int mode;
3104 int major;
3105 int minor;
3106 };
3107
3108 static void free_mknod_cb_data(void *ptr)
3109 {
3110 struct mknod_cb_data *data = ptr;
3111
3112 free(data->path);
3113 free(data);
3114 }
3115
3116 static void nfs_mknod_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3117 {
3118 MKNOD3res *res;
3119 struct nfs_cb_data *data = private_data;
3120 struct nfs_context *nfs = data->nfs;
3121 char *str = data->continue_data;
3122
3123 assert(rpc->magic == RPC_CONTEXT_MAGIC);
3124
3125 str = &str[strlen(str) + 1];
3126
3127 if (status == RPC_STATUS_ERROR) {
3128 data->cb(-EFAULT, nfs, command_data, data->private_data);
3129 free_nfs_cb_data(data);
3130 return;
3131 }
3132 if (status == RPC_STATUS_CANCEL) {
3133 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3134 free_nfs_cb_data(data);
3135 return;
3136 }
3137
3138 res = command_data;
3139 if (res->status != NFS3_OK) {
3140 rpc_set_error(nfs->rpc, "NFS: MKNOD of %s/%s failed with %s(%d)", data->saved_path, str, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
3141 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3142 free_nfs_cb_data(data);
3143 return;
3144 }
3145
3146 data->cb(0, nfs, NULL, data->private_data);
3147 free_nfs_cb_data(data);
3148 }
3149
3150 static int nfs_mknod_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
3151 {
3152 struct mknod_cb_data *cb_data = data->continue_data;
3153 char *str = cb_data->path;
3154 MKNOD3args args;
3155
3156 str = &str[strlen(str) + 1];
3157
3158 args.where.dir = data->fh;
3159 args.where.name = str;
3160 switch (cb_data->mode & S_IFMT) {
3161 case S_IFCHR:
3162 args.what.type = NF3CHR;
3163 args.what.mknoddata3_u.chr_device.dev_attributes.mode.set_it = 1;
3164 args.what.mknoddata3_u.chr_device.dev_attributes.mode.set_mode3_u.mode = cb_data->mode & (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH);
3165 args.what.mknoddata3_u.chr_device.spec.specdata1 = cb_data->major;
3166 args.what.mknoddata3_u.chr_device.spec.specdata2 = cb_data->minor;
3167 break;
3168 case S_IFBLK:
3169 args.what.type = NF3BLK;
3170 args.what.mknoddata3_u.blk_device.dev_attributes.mode.set_it = 1;
3171 args.what.mknoddata3_u.blk_device.dev_attributes.mode.set_mode3_u.mode = cb_data->mode & (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH);
3172 args.what.mknoddata3_u.blk_device.spec.specdata1 = cb_data->major;
3173 args.what.mknoddata3_u.blk_device.spec.specdata2 = cb_data->minor;
3174 case S_IFSOCK:
3175 args.what.type = NF3SOCK;
3176 args.what.mknoddata3_u.sock_attributes.mode.set_it = 1;
3177 args.what.mknoddata3_u.sock_attributes.mode.set_mode3_u.mode = cb_data->mode & (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH);
3178 break;
3179 case S_IFIFO:
3180 args.what.type = NF3FIFO;
3181 args.what.mknoddata3_u.pipe_attributes.mode.set_it = 1;
3182 args.what.mknoddata3_u.pipe_attributes.mode.set_mode3_u.mode = cb_data->mode & (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH);
3183 break;
3184 default:
3185 rpc_set_error(nfs->rpc, "Invalid file type for NFS3/MKNOD call");
3186 data->cb(-EINVAL, nfs, rpc_get_error(nfs->rpc), data->private_data);
3187 free_nfs_cb_data(data);
3188 return -1;
3189 }
3190
3191 if (rpc_nfs3_mknod_async(nfs->rpc, nfs_mknod_cb, &args, data) != 0) {
3192 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3193 free_nfs_cb_data(data);
3194 return -1;
3195 }
3196 return 0;
3197 }
3198
3199 int nfs_mknod_async(struct nfs_context *nfs, const char *path, int mode, int dev, nfs_cb cb, void *private_data)
3200 {
3201 char *ptr;
3202 struct mknod_cb_data *cb_data;
3203
3204 cb_data = malloc(sizeof(struct mknod_cb_data));
3205 if (cb_data == NULL) {
3206 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for cb data");
3207 return -1;
3208 }
3209
3210 cb_data->path = strdup(path);
3211 if (cb_data->path == NULL) {
3212 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for path");
3213 free(cb_data);
3214 return -1;
3215 }
3216
3217 ptr = strrchr(cb_data->path, '/');
3218 if (ptr == NULL) {
3219 rpc_set_error(nfs->rpc, "Invalid path %s", path);
3220 free_mknod_cb_data(cb_data);
3221 return -1;
3222 }
3223 *ptr = 0;
3224
3225 cb_data->mode = mode;
3226 cb_data->major = major(dev);
3227 cb_data->minor = minor(dev);
3228
3229 /* data->path now points to the parent directory, and beyond the nul terminateor is the new directory to create */
3230 if (nfs_lookuppath_async(nfs, cb_data->path, 0, cb, private_data, nfs_mknod_continue_internal, cb_data, free_mknod_cb_data, 0) != 0) {
3231 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3232 return -1;
3233 }
3234
3235 return 0;
3236 }
3237
3238 /*
3239 * Async opendir()
3240 */
3241
3242 /* ReadDirPlus Emulation Callback data */
3243 struct rdpe_cb_data {
3244 int getattrcount;
3245 int status;
3246 struct nfs_cb_data *data;
3247 };
3248
3249 /* ReadDirPlus Emulation LOOKUP Callback data */
3250 struct rdpe_lookup_cb_data {
3251 struct rdpe_cb_data *rdpe_cb_data;
3252 struct nfsdirent *nfsdirent;
3253 };
3254
3255 /* Workaround for servers lacking READDIRPLUS, use READDIR instead and a GETATTR-loop */
3256 static void nfs_opendir3_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3257 {
3258 LOOKUP3res *res = command_data;
3259 struct rdpe_lookup_cb_data *rdpe_lookup_cb_data = private_data;
3260 struct rdpe_cb_data *rdpe_cb_data = rdpe_lookup_cb_data->rdpe_cb_data;
3261 struct nfs_cb_data *data = rdpe_cb_data->data;
3262 struct nfsdir *nfsdir = data->continue_data;
3263 struct nfs_context *nfs = data->nfs;
3264 struct nfsdirent *nfsdirent = rdpe_lookup_cb_data->nfsdirent;
3265
3266 assert(rpc->magic == RPC_CONTEXT_MAGIC);
3267
3268 free(rdpe_lookup_cb_data);
3269
3270 rdpe_cb_data->getattrcount--;
3271
3272 if (status == RPC_STATUS_ERROR) {
3273 rpc_set_error(nfs->rpc, "LOOKUP during READDIRPLUS emulation "
3274 "failed with RPC_STATUS_ERROR");
3275 rdpe_cb_data->status = RPC_STATUS_ERROR;
3276 }
3277 if (status == RPC_STATUS_CANCEL) {
3278 rpc_set_error(nfs->rpc, "LOOKUP during READDIRPLUS emulation "
3279 "failed with RPC_STATUS_CANCEL");
3280 rdpe_cb_data->status = RPC_STATUS_CANCEL;
3281 }
3282 if (status == RPC_STATUS_SUCCESS && res->status == NFS3_OK) {
3283 if (res->LOOKUP3res_u.resok.obj_attributes.attributes_follow) {
3284 fattr3 *attributes = &res->LOOKUP3res_u.resok.obj_attributes.post_op_attr_u.attributes;
3285
3286 nfsdirent->type = attributes->type;
3287 nfsdirent->mode = attributes->mode;
3288 nfsdirent->size = attributes->size;
3289
3290 nfsdirent->atime.tv_sec = attributes->atime.seconds;
3291 nfsdirent->atime.tv_usec = attributes->atime.nseconds/1000;
3292 nfsdirent->atime_nsec = attributes->atime.nseconds;
3293 nfsdirent->mtime.tv_sec = attributes->mtime.seconds;
3294 nfsdirent->mtime.tv_usec = attributes->mtime.nseconds/1000;
3295 nfsdirent->mtime_nsec = attributes->mtime.nseconds;
3296 nfsdirent->ctime.tv_sec = attributes->ctime.seconds;
3297 nfsdirent->ctime.tv_usec = attributes->ctime.nseconds/1000;
3298 nfsdirent->ctime_nsec = attributes->ctime.nseconds;
3299 nfsdirent->uid = attributes->uid;
3300 nfsdirent->gid = attributes->gid;
3301 nfsdirent->nlink = attributes->nlink;
3302 nfsdirent->dev = attributes->fsid;
3303 nfsdirent->rdev = specdata3_to_rdev(&attributes->rdev);
3304 nfsdirent->blksize = NFS_BLKSIZE;
3305 nfsdirent->blocks = (attributes->used + 512 - 1) / 512;
3306 nfsdirent->used = attributes->used;
3307 }
3308 }
3309
3310 if (rdpe_cb_data->getattrcount == 0) {
3311 if (rdpe_cb_data->status != RPC_STATUS_SUCCESS) {
3312 rpc_set_error(nfs->rpc, "READDIRPLUS emulation "
3313 "failed: %s", rpc_get_error(rpc));
3314 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc),
3315 data->private_data);
3316 nfs_free_nfsdir(nfsdir);
3317 } else {
3318 data->cb(0, nfs, nfsdir, data->private_data);
3319 }
3320 free(rdpe_cb_data);
3321
3322 data->continue_data = NULL;
3323 free_nfs_cb_data(data);
3324 }
3325 }
3326
3327 static void nfs_opendir2_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3328 {
3329 READDIR3res *res = command_data;
3330 struct nfs_cb_data *data = private_data;
3331 struct nfs_context *nfs = data->nfs;
3332 struct nfsdir *nfsdir = data->continue_data;
3333 struct nfsdirent *nfsdirent;
3334 struct entry3 *entry;
3335 uint64_t cookie = 0;
3336 struct rdpe_cb_data *rdpe_cb_data;
3337
3338 assert(rpc->magic == RPC_CONTEXT_MAGIC);
3339
3340 if (status == RPC_STATUS_ERROR) {
3341 data->cb(-EFAULT, nfs, command_data, data->private_data);
3342 nfs_free_nfsdir(nfsdir);
3343 data->continue_data = NULL;
3344 free_nfs_cb_data(data);
3345 return;
3346 }
3347
3348 if (status == RPC_STATUS_CANCEL) {
3349 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3350 nfs_free_nfsdir(nfsdir);
3351 data->continue_data = NULL;
3352 free_nfs_cb_data(data);
3353 return;
3354 }
3355
3356 if (res->status != NFS3_OK) {
3357 rpc_set_error(nfs->rpc, "NFS: READDIR of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
3358 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3359 nfs_free_nfsdir(nfsdir);
3360 data->continue_data = NULL;
3361 free_nfs_cb_data(data);
3362 return;
3363 }
3364
3365 entry =res->READDIR3res_u.resok.reply.entries;
3366 while (entry != NULL) {
3367 nfsdirent = malloc(sizeof(struct nfsdirent));
3368 if (nfsdirent == NULL) {
3369 data->cb(-ENOMEM, nfs, "Failed to allocate dirent", data->private_data);
3370 nfs_free_nfsdir(nfsdir);
3371 data->continue_data = NULL;
3372 free_nfs_cb_data(data);
3373 return;
3374 }
3375 memset(nfsdirent, 0, sizeof(struct nfsdirent));
3376 nfsdirent->name = strdup(entry->name);
3377 if (nfsdirent->name == NULL) {
3378 data->cb(-ENOMEM, nfs, "Failed to allocate dirent->name", data->private_data);
3379 free(nfsdirent);
3380 nfs_free_nfsdir(nfsdir);
3381 data->continue_data = NULL;
3382 free_nfs_cb_data(data);
3383 return;
3384 }
3385 nfsdirent->inode = entry->fileid;
3386
3387 nfsdirent->next = nfsdir->entries;
3388 nfsdir->entries = nfsdirent;
3389
3390 cookie = entry->cookie;
3391 entry = entry->nextentry;
3392 }
3393
3394 if (res->READDIR3res_u.resok.reply.eof == 0) {
3395 READDIR3args args;
3396
3397 args.dir = data->fh;
3398 args.cookie = cookie;
3399 memcpy(&args.cookieverf, res->READDIR3res_u.resok.cookieverf, sizeof(cookieverf3));
3400 args.count = 8192;
3401
3402 if (rpc_nfs3_readdir_async(nfs->rpc, nfs_opendir2_cb, &args, data) != 0) {
3403 rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIR call for %s", data->path);
3404 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3405 nfs_free_nfsdir(nfsdir);
3406 data->continue_data = NULL;
3407 free_nfs_cb_data(data);
3408 return;
3409 }
3410 return;
3411 }
3412
3413 if (res->READDIR3res_u.resok.dir_attributes.attributes_follow)
3414 nfsdir->attr = res->READDIR3res_u.resok.dir_attributes.post_op_attr_u.attributes;
3415
3416 /* steal the dirhandle */
3417 nfsdir->current = nfsdir->entries;
3418
3419 if (nfsdir->entries) {
3420 rdpe_cb_data = malloc(sizeof(struct rdpe_cb_data));
3421 rdpe_cb_data->getattrcount = 0;
3422 rdpe_cb_data->status = RPC_STATUS_SUCCESS;
3423 rdpe_cb_data->data = data;
3424 for (nfsdirent = nfsdir->entries; nfsdirent; nfsdirent = nfsdirent->next) {
3425 struct rdpe_lookup_cb_data *rdpe_lookup_cb_data;
3426 LOOKUP3args args;
3427
3428 rdpe_lookup_cb_data = malloc(sizeof(struct rdpe_lookup_cb_data));
3429 rdpe_lookup_cb_data->rdpe_cb_data = rdpe_cb_data;
3430 rdpe_lookup_cb_data->nfsdirent = nfsdirent;
3431
3432 memset(&args, 0, sizeof(LOOKUP3args));
3433 args.what.dir = data->fh;
3434 args.what.name = nfsdirent->name;
3435
3436 if (rpc_nfs3_lookup_async(nfs->rpc, nfs_opendir3_cb, &args, rdpe_lookup_cb_data) != 0) {
3437 rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIR LOOKUP call");
3438
3439 /* if we have already commands in flight, we cant just stop, we have to wait for the
3440 * commands in flight to complete
3441 */
3442 if (rdpe_cb_data->getattrcount > 0) {
3443 nfs_free_nfsdir(nfsdir);
3444 data->continue_data = NULL;
3445 free_nfs_cb_data(data);
3446 rdpe_cb_data->status = RPC_STATUS_ERROR;
3447 free(rdpe_lookup_cb_data);
3448 return;
3449 }
3450
3451 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3452 nfs_free_nfsdir(nfsdir);
3453 data->continue_data = NULL;
3454 free_nfs_cb_data(data);
3455 free(rdpe_lookup_cb_data);
3456 free(rdpe_cb_data);
3457 return;
3458 }
3459 rdpe_cb_data->getattrcount++;
3460 }
3461 }
3462 }
3463
3464 static void nfs_opendir_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3465 {
3466 READDIRPLUS3res *res = command_data;
3467 struct nfs_cb_data *data = private_data;
3468 struct nfs_context *nfs = data->nfs;
3469 struct nfsdir *nfsdir = data->continue_data;
3470 struct entryplus3 *entry;
3471 uint64_t cookie = 0;
3472
3473 assert(rpc->magic == RPC_CONTEXT_MAGIC);
3474
3475 if (status == RPC_STATUS_ERROR || (status == RPC_STATUS_SUCCESS && res->status == NFS3ERR_NOTSUPP) ){
3476 READDIR3args args;
3477
3478 args.dir = data->fh;
3479 args.cookie = cookie;
3480 memset(&args.cookieverf, 0, sizeof(cookieverf3));
3481 args.count = 8192;
3482
3483 if (rpc_nfs3_readdir_async(nfs->rpc, nfs_opendir2_cb, &args, data) != 0) {
3484 rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIR call for %s", data->path);
3485 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3486 nfs_free_nfsdir(nfsdir);
3487 data->continue_data = NULL;
3488 free_nfs_cb_data(data);
3489 return;
3490 }
3491 return;
3492 }
3493
3494 if (status == RPC_STATUS_CANCEL) {
3495 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3496 nfs_free_nfsdir(nfsdir);
3497 data->continue_data = NULL;
3498 free_nfs_cb_data(data);
3499 return;
3500 }
3501
3502 if (res->status != NFS3_OK) {
3503 rpc_set_error(nfs->rpc, "NFS: READDIRPLUS of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
3504 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3505 nfs_free_nfsdir(nfsdir);
3506 data->continue_data = NULL;
3507 free_nfs_cb_data(data);
3508 return;
3509 }
3510
3511 entry =res->READDIRPLUS3res_u.resok.reply.entries;
3512 while (entry != NULL) {
3513 struct nfsdirent *nfsdirent;
3514
3515 nfsdirent = malloc(sizeof(struct nfsdirent));
3516 if (nfsdirent == NULL) {
3517 data->cb(-ENOMEM, nfs, "Failed to allocate dirent", data->private_data);
3518 nfs_free_nfsdir(nfsdir);
3519 data->continue_data = NULL;
3520 free_nfs_cb_data(data);
3521 return;
3522 }
3523 memset(nfsdirent, 0, sizeof(struct nfsdirent));
3524 nfsdirent->name = strdup(entry->name);
3525 if (nfsdirent->name == NULL) {
3526 data->cb(-ENOMEM, nfs, "Failed to allocate dirent->name", data->private_data);
3527 free(nfsdirent);
3528 nfs_free_nfsdir(nfsdir);
3529 data->continue_data = NULL;
3530 free_nfs_cb_data(data);
3531 return;
3532 }
3533 nfsdirent->inode = entry->fileid;
3534 if (entry->name_attributes.attributes_follow) {
3535 nfsdirent->type = entry->name_attributes.post_op_attr_u.attributes.type;
3536 nfsdirent->mode = entry->name_attributes.post_op_attr_u.attributes.mode;
3537 nfsdirent->size = entry->name_attributes.post_op_attr_u.attributes.size;
3538
3539 nfsdirent->atime.tv_sec = entry->name_attributes.post_op_attr_u.attributes.atime.seconds;
3540 nfsdirent->atime.tv_usec = entry->name_attributes.post_op_attr_u.attributes.atime.nseconds/1000;
3541 nfsdirent->atime_nsec = entry->name_attributes.post_op_attr_u.attributes.atime.nseconds;
3542 nfsdirent->mtime.tv_sec = entry->name_attributes.post_op_attr_u.attributes.mtime.seconds;
3543 nfsdirent->mtime.tv_usec = entry->name_attributes.post_op_attr_u.attributes.mtime.nseconds/1000;
3544 nfsdirent->mtime_nsec = entry->name_attributes.post_op_attr_u.attributes.mtime.nseconds;
3545 nfsdirent->ctime.tv_sec = entry->name_attributes.post_op_attr_u.attributes.ctime.seconds;
3546 nfsdirent->ctime.tv_usec = entry->name_attributes.post_op_attr_u.attributes.ctime.nseconds/1000;
3547 nfsdirent->ctime_nsec = entry->name_attributes.post_op_attr_u.attributes.ctime.nseconds;
3548 nfsdirent->uid = entry->name_attributes.post_op_attr_u.attributes.uid;
3549 nfsdirent->gid = entry->name_attributes.post_op_attr_u.attributes.gid;
3550 nfsdirent->nlink = entry->name_attributes.post_op_attr_u.attributes.nlink;
3551 nfsdirent->dev = entry->name_attributes.post_op_attr_u.attributes.fsid;
3552 nfsdirent->rdev = specdata3_to_rdev(&entry->name_attributes.post_op_attr_u.attributes.rdev);
3553 nfsdirent->blksize = NFS_BLKSIZE;
3554 nfsdirent->blocks = (entry->name_attributes.post_op_attr_u.attributes.used + 512 - 1) / 512;
3555 nfsdirent->used = entry->name_attributes.post_op_attr_u.attributes.used;
3556 }
3557
3558 nfsdirent->next = nfsdir->entries;
3559 nfsdir->entries = nfsdirent;
3560
3561 cookie = entry->cookie;
3562 entry = entry->nextentry;
3563 }
3564
3565 if (res->READDIRPLUS3res_u.resok.reply.eof == 0) {
3566 READDIRPLUS3args args;
3567
3568 args.dir = data->fh;
3569 args.cookie = cookie;
3570 memcpy(&args.cookieverf, res->READDIRPLUS3res_u.resok.cookieverf, sizeof(cookieverf3));
3571 args.dircount = 8192;
3572 args.maxcount = 8192;
3573
3574 if (rpc_nfs3_readdirplus_async(nfs->rpc, nfs_opendir_cb, &args, data) != 0) {
3575 rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIRPLUS call for %s", data->path);
3576 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3577 nfs_free_nfsdir(nfsdir);
3578 data->continue_data = NULL;
3579 free_nfs_cb_data(data);
3580 return;
3581 }
3582 return;
3583 }
3584
3585 if (res->READDIRPLUS3res_u.resok.dir_attributes.attributes_follow)
3586 nfsdir->attr = res->READDIRPLUS3res_u.resok.dir_attributes.post_op_attr_u.attributes;
3587
3588 /* steal the dirhandle */
3589 data->continue_data = NULL;
3590 nfsdir->current = nfsdir->entries;
3591
3592 data->cb(0, nfs, nfsdir, data->private_data);
3593 free_nfs_cb_data(data);
3594 }
3595
3596 static int nfs_opendir_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
3597 {
3598 READDIRPLUS3args args;
3599 struct nfsdir *nfsdir = data->continue_data;;
3600 struct nfsdir *cached;
3601
3602 cached = nfs_dircache_find(nfs, &data->fh);
3603 if (cached) {
3604 if (attr && attr->mtime.seconds == cached->attr.mtime.seconds) {
3605 cached->current = cached->entries;
3606 data->cb(0, nfs, cached, data->private_data);
3607 free_nfs_cb_data(data);
3608 return 0;
3609 } else {
3610 /* cache must be stale */
3611 nfs_free_nfsdir(cached);
3612 }
3613 }
3614
3615 nfsdir->fh.data.data_len = data->fh.data.data_len;
3616 nfsdir->fh.data.data_val = malloc(nfsdir->fh.data.data_len);
3617 if (nfsdir->fh.data.data_val == NULL) {
3618 rpc_set_error(nfs->rpc, "OOM when allocating fh for nfsdir");
3619 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3620 free_nfs_cb_data(data);
3621 return -1;
3622 }
3623 memcpy(nfsdir->fh.data.data_val, data->fh.data.data_val, data->fh.data.data_len);
3624
3625 args.dir = data->fh;
3626 args.cookie = 0;
3627 memset(&args.cookieverf, 0, sizeof(cookieverf3));
3628 args.dircount = 8192;
3629 args.maxcount = 8192;
3630 if (rpc_nfs3_readdirplus_async(nfs->rpc, nfs_opendir_cb, &args, data) != 0) {
3631 rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIRPLUS call for %s", data->path);
3632 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3633 free_nfs_cb_data(data);
3634 return -1;
3635 }
3636 return 0;
3637 }
3638
3639 int nfs_opendir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
3640 {
3641 struct nfsdir *nfsdir;
3642
3643 nfsdir = malloc(sizeof(struct nfsdir));
3644 if (nfsdir == NULL) {
3645 rpc_set_error(nfs->rpc, "failed to allocate buffer for nfsdir");
3646 return -1;
3647 }
3648 memset(nfsdir, 0, sizeof(struct nfsdir));
3649
3650 if (nfs_lookuppath_async(nfs, path, 0, cb, private_data, nfs_opendir_continue_internal, nfsdir, free, 0) != 0) {
3651 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3652 return -1;
3653 }
3654
3655 return 0;
3656 }
3657
3658
3659 struct nfsdirent *nfs_readdir(struct nfs_context *nfs _U_, struct nfsdir *nfsdir)
3660 {
3661 struct nfsdirent *nfsdirent = nfsdir->current;
3662
3663 if (nfsdir->current != NULL) {
3664 nfsdir->current = nfsdir->current->next;
3665 }
3666 return nfsdirent;
3667 }
3668
3669
3670 /*
3671 * closedir()
3672 */
3673 void nfs_closedir(struct nfs_context *nfs, struct nfsdir *nfsdir)
3674 {
3675 nfs_dircache_add(nfs, nfsdir);
3676 }
3677
3678
3679 /*
3680 * getcwd()
3681 */
3682 void nfs_getcwd(struct nfs_context *nfs, const char **cwd)
3683 {
3684 if (cwd) {
3685 *cwd = nfs->cwd;
3686 }
3687 }
3688
3689
3690 /*
3691 * Async lseek()
3692 */
3693 struct lseek_cb_data {
3694 struct nfs_context *nfs;
3695 struct nfsfh *nfsfh;
3696 int64_t offset;
3697 nfs_cb cb;
3698 void *private_data;
3699 };
3700
3701 static void nfs_lseek_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3702 {
3703 GETATTR3res *res;
3704 struct lseek_cb_data *data = private_data;
3705 struct nfs_context *nfs = data->nfs;
3706 uint64_t size = 0;
3707
3708 assert(rpc->magic == RPC_CONTEXT_MAGIC);
3709
3710 if (status == RPC_STATUS_ERROR) {
3711 data->cb(-EFAULT, nfs, command_data, data->private_data);
3712 free(data);
3713 return;
3714 }
3715 if (status == RPC_STATUS_CANCEL) {
3716 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3717 free(data);
3718 return;
3719 }
3720
3721 res = command_data;
3722 if (res->status != NFS3_OK) {
3723 rpc_set_error(nfs->rpc, "NFS: GETATTR failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
3724 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3725 free(data);
3726 return;
3727 }
3728
3729 size = res->GETATTR3res_u.resok.obj_attributes.size;
3730
3731 if (data->offset < 0 &&
3732 (uint64_t)(-data->offset) > size) {
3733 data->cb(-EINVAL, nfs, &data->nfsfh->offset, data->private_data);
3734 } else {
3735 data->nfsfh->offset = data->offset + size;
3736 data->cb(0, nfs, &data->nfsfh->offset, data->private_data);
3737 }
3738
3739 free(data);
3740 }
3741
3742 int nfs_lseek_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int64_t offset, int whence, nfs_cb cb, void *private_data)
3743 {
3744 struct lseek_cb_data *data;
3745 struct GETATTR3args args;
3746
3747 if (whence == SEEK_SET) {
3748 if (offset < 0) {
3749 cb(-EINVAL, nfs, &nfsfh->offset, private_data);
3750 } else {
3751 nfsfh->offset = offset;
3752 cb(0, nfs, &nfsfh->offset, private_data);
3753 }
3754 return 0;
3755 }
3756 if (whence == SEEK_CUR) {
3757 if (offset < 0 &&
3758 nfsfh->offset < (uint64_t)(-offset)) {
3759 cb(-EINVAL, nfs, &nfsfh->offset, private_data);
3760 } else {
3761 nfsfh->offset += offset;
3762 cb(0, nfs, &nfsfh->offset, private_data);
3763 }
3764 return 0;
3765 }
3766
3767 data = malloc(sizeof(struct lseek_cb_data));
3768 if (data == NULL) {
3769 rpc_set_error(nfs->rpc, "Out Of Memory: Failed to malloc lseek cb data");
3770 return -1;
3771 }
3772
3773 data->nfs = nfs;
3774 data->nfsfh = nfsfh;
3775 data->offset = offset;
3776 data->cb = cb;
3777 data->private_data = private_data;
3778
3779 memset(&args, 0, sizeof(GETATTR3args));
3780 args.object = nfsfh->fh;
3781
3782 if (rpc_nfs3_getattr_async(nfs->rpc, nfs_lseek_1_cb, &args, data) != 0) {
3783 rpc_set_error(nfs->rpc, "RPC error: Failed to send LSEEK GETATTR call");
3784 free(data);
3785 return -1;
3786 }
3787 return 0;
3788 }
3789
3790
3791
3792
3793 /*
3794 * Async statvfs()
3795 */
3796 static void nfs_statvfs_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3797 {
3798 FSSTAT3res *res;
3799 struct nfs_cb_data *data = private_data;
3800 struct nfs_context *nfs = data->nfs;
3801 struct statvfs svfs;
3802
3803 assert(rpc->magic == RPC_CONTEXT_MAGIC);
3804
3805 if (status == RPC_STATUS_ERROR) {
3806 data->cb(-EFAULT, nfs, command_data, data->private_data);
3807 free_nfs_cb_data(data);
3808 return;
3809 }
3810 if (status == RPC_STATUS_CANCEL) {
3811 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3812 free_nfs_cb_data(data);
3813 return;
3814 }
3815
3816 res = command_data;
3817 if (res->status != NFS3_OK) {
3818 rpc_set_error(nfs->rpc, "NFS: FSSTAT of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
3819 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3820 free_nfs_cb_data(data);
3821 return;
3822 }
3823
3824 svfs.f_bsize = NFS_BLKSIZE;
3825 svfs.f_frsize = NFS_BLKSIZE;
3826 svfs.f_blocks = res->FSSTAT3res_u.resok.tbytes/NFS_BLKSIZE;
3827 svfs.f_bfree = res->FSSTAT3res_u.resok.fbytes/NFS_BLKSIZE;
3828 svfs.f_bavail = res->FSSTAT3res_u.resok.abytes/NFS_BLKSIZE;
3829 svfs.f_files = res->FSSTAT3res_u.resok.tfiles;
3830 svfs.f_ffree = res->FSSTAT3res_u.resok.ffiles;
3831 #if !defined(ANDROID)
3832 svfs.f_favail = res->FSSTAT3res_u.resok.afiles;
3833 svfs.f_fsid = 0;
3834 svfs.f_flag = 0;
3835 svfs.f_namemax = 256;
3836 #endif
3837
3838 data->cb(0, nfs, &svfs, data->private_data);
3839 free_nfs_cb_data(data);
3840 }
3841
3842 static int nfs_statvfs_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
3843 {
3844 FSSTAT3args args;
3845
3846 args.fsroot = data->fh;
3847 if (rpc_nfs3_fsstat_async(nfs->rpc, nfs_statvfs_1_cb, &args, data) != 0) {
3848 rpc_set_error(nfs->rpc, "RPC error: Failed to send FSSTAT call for %s", data->path);
3849 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3850 free_nfs_cb_data(data);
3851 return -1;
3852 }
3853 return 0;
3854 }
3855
3856 int nfs_statvfs_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
3857 {
3858 if (nfs_lookuppath_async(nfs, path, 0, cb, private_data, nfs_statvfs_continue_internal, NULL, NULL, 0) != 0) {
3859 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3860 return -1;
3861 }
3862
3863 return 0;
3864 }
3865
3866
3867
3868
3869 /*
3870 * Async readlink()
3871 */
3872 static void nfs_readlink_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3873 {
3874 READLINK3res *res;
3875 struct nfs_cb_data *data = private_data;
3876 struct nfs_context *nfs = data->nfs;
3877
3878 assert(rpc->magic == RPC_CONTEXT_MAGIC);
3879
3880 if (status == RPC_STATUS_ERROR) {
3881 data->cb(-EFAULT, nfs, command_data, data->private_data);
3882 free_nfs_cb_data(data);
3883 return;
3884 }
3885 if (status == RPC_STATUS_CANCEL) {
3886 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3887 free_nfs_cb_data(data);
3888 return;
3889 }
3890
3891 res = command_data;
3892 if (res->status != NFS3_OK) {
3893 rpc_set_error(nfs->rpc, "NFS: READLINK of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
3894 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3895 free_nfs_cb_data(data);
3896 return;
3897 }
3898
3899
3900 data->cb(0, nfs, res->READLINK3res_u.resok.data, data->private_data);
3901 free_nfs_cb_data(data);
3902 }
3903
3904 static int nfs_readlink_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
3905 {
3906 READLINK3args args;
3907
3908 args.symlink = data->fh;
3909
3910 if (rpc_nfs3_readlink_async(nfs->rpc, nfs_readlink_1_cb, &args, data) != 0) {
3911 rpc_set_error(nfs->rpc, "RPC error: Failed to send READLINK call for %s", data->path);
3912 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3913 free_nfs_cb_data(data);
3914 return -1;
3915 }
3916 return 0;
3917 }
3918
3919 int nfs_readlink_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
3920 {
3921 if (nfs_lookuppath_async(nfs, path, 1, cb, private_data, nfs_readlink_continue_internal, NULL, NULL, 0) != 0) {
3922 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3923 return -1;
3924 }
3925
3926 return 0;
3927 }
3928
3929
3930
3931
3932 /*
3933 * Async chmod()
3934 */
3935 static void nfs_chmod_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3936 {
3937 struct nfs_cb_data *data = private_data;
3938 struct nfs_context *nfs = data->nfs;
3939 SETATTR3res *res;
3940
3941 assert(rpc->magic == RPC_CONTEXT_MAGIC);
3942
3943 if (status == RPC_STATUS_ERROR) {
3944 data->cb(-EFAULT, nfs, command_data, data->private_data);
3945 free_nfs_cb_data(data);
3946 return;
3947 }
3948 if (status == RPC_STATUS_CANCEL) {
3949 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3950 free_nfs_cb_data(data);
3951 return;
3952 }
3953
3954 res = command_data;
3955 if (res->status != NFS3_OK) {
3956 rpc_set_error(nfs->rpc, "NFS: SETATTR failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
3957 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3958 free_nfs_cb_data(data);
3959 return;
3960 }
3961
3962 data->cb(0, nfs, NULL, data->private_data);
3963 free_nfs_cb_data(data);
3964 }
3965
3966 static int nfs_chmod_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
3967 {
3968 SETATTR3args args;
3969
3970 memset(&args, 0, sizeof(SETATTR3args));
3971 args.object = data->fh;
3972 args.new_attributes.mode.set_it = 1;
3973 args.new_attributes.mode.set_mode3_u.mode = data->continue_int;
3974
3975 if (rpc_nfs3_setattr_async(nfs->rpc, nfs_chmod_cb, &args, data) != 0) {
3976 rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
3977 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3978 free_nfs_cb_data(data);
3979 return -1;
3980 }
3981 return 0;
3982 }
3983
3984
3985 int nfs_chmod_async_internal(struct nfs_context *nfs, const char *path, int no_follow, int mode, nfs_cb cb, void *private_data)
3986 {
3987 if (nfs_lookuppath_async(nfs, path, no_follow, cb, private_data, nfs_chmod_continue_internal, NULL, NULL, mode) != 0) {
3988 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3989 return -1;
3990 }
3991
3992 return 0;
3993 }
3994
3995 int nfs_chmod_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data)
3996 {
3997 return nfs_chown_async_internal(nfs, path, 0, mode, cb, private_data);
3998 }
3999
4000 int nfs_lchmod_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data)
4001 {
4002 return nfs_chown_async_internal(nfs, path, 1, mode, cb, private_data);
4003 }
4004
4005 /*
4006 * Async fchmod()
4007 */
4008 int nfs_fchmod_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int mode, nfs_cb cb, void *private_data)
4009 {
4010 struct nfs_cb_data *data;
4011
4012 data = malloc(sizeof(struct nfs_cb_data));
4013 if (data == NULL) {
4014 rpc_set_error(nfs->rpc, "out of memory. failed to allocate memory for nfs mount data");
4015 return -1;
4016 }
4017 memset(data, 0, sizeof(struct nfs_cb_data));
4018 data->nfs = nfs;
4019 data->cb = cb;
4020 data->private_data = private_data;
4021 data->continue_int = mode;
4022 data->fh.data.data_len = nfsfh->fh.data.data_len;
4023 data->fh.data.data_val = malloc(data->fh.data.data_len);
4024 if (data->fh.data.data_val == NULL) {
4025 rpc_set_error(nfs->rpc, "Out of memory: Failed to allocate fh");
4026 free_nfs_cb_data(data);
4027 return -1;
4028 }
4029 memcpy(data->fh.data.data_val, nfsfh->fh.data.data_val, data->fh.data.data_len);
4030
4031 if (nfs_chmod_continue_internal(nfs, NULL, data) != 0) {
4032 return -1;
4033 }
4034
4035 return 0;
4036 }
4037
4038
4039
4040 /*
4041 * Async chown()
4042 */
4043 static void nfs_chown_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
4044 {
4045 struct nfs_cb_data *data = private_data;
4046 struct nfs_context *nfs = data->nfs;
4047 SETATTR3res *res;
4048
4049 assert(rpc->magic == RPC_CONTEXT_MAGIC);
4050
4051 if (status == RPC_STATUS_ERROR) {
4052 data->cb(-EFAULT, nfs, command_data, data->private_data);
4053 free_nfs_cb_data(data);
4054 return;
4055 }
4056 if (status == RPC_STATUS_CANCEL) {
4057 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
4058 free_nfs_cb_data(data);
4059 return;
4060 }
4061
4062 res = command_data;
4063 if (res->status != NFS3_OK) {
4064 rpc_set_error(nfs->rpc, "NFS: SETATTR failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
4065 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
4066 free_nfs_cb_data(data);
4067 return;
4068 }
4069
4070 data->cb(0, nfs, NULL, data->private_data);
4071 free_nfs_cb_data(data);
4072 }
4073
4074 struct nfs_chown_data {
4075 uid_t uid;
4076 gid_t gid;
4077 };
4078
4079 static int nfs_chown_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
4080 {
4081 SETATTR3args args;
4082 struct nfs_chown_data *chown_data = data->continue_data;
4083
4084 memset(&args, 0, sizeof(SETATTR3args));
4085 args.object = data->fh;
4086 if (chown_data->uid != (uid_t)-1) {
4087 args.new_attributes.uid.set_it = 1;
4088 args.new_attributes.uid.set_uid3_u.uid = chown_data->uid;
4089 }
4090 if (chown_data->gid != (gid_t)-1) {
4091 args.new_attributes.gid.set_it = 1;
4092 args.new_attributes.gid.set_gid3_u.gid = chown_data->gid;
4093 }
4094
4095 if (rpc_nfs3_setattr_async(nfs->rpc, nfs_chown_cb, &args, data) != 0) {
4096 rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
4097 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
4098 free_nfs_cb_data(data);
4099 return -1;
4100 }
4101 return 0;
4102 }
4103
4104
4105 int nfs_chown_async_internal(struct nfs_context *nfs, const char *path, int no_follow, int uid, int gid, nfs_cb cb, void *private_data)
4106 {
4107 struct nfs_chown_data *chown_data;
4108
4109 chown_data = malloc(sizeof(struct nfs_chown_data));
4110 if (chown_data == NULL) {
4111 rpc_set_error(nfs->rpc, "Failed to allocate memory for chown data structure");
4112 return -1;
4113 }
4114
4115 chown_data->uid = uid;
4116 chown_data->gid = gid;
4117
4118 if (nfs_lookuppath_async(nfs, path, no_follow, cb, private_data, nfs_chown_continue_internal, chown_data, free, 0) != 0) {
4119 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
4120 return -1;
4121 }
4122
4123 return 0;
4124 }
4125
4126 int nfs_chown_async(struct nfs_context *nfs, const char *path, int uid, int gid, nfs_cb cb, void *private_data)
4127 {
4128 return nfs_chown_async_internal(nfs, path, 0, uid, gid, cb, private_data);
4129 }
4130
4131 int nfs_lchown_async(struct nfs_context *nfs, const char *path, int uid, int gid, nfs_cb cb, void *private_data)
4132 {
4133 return nfs_chown_async_internal(nfs, path, 1, uid, gid, cb, private_data);
4134 }
4135
4136 /*
4137 * Async fchown()
4138 */
4139 int nfs_fchown_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int uid, int gid, nfs_cb cb, void *private_data)
4140 {
4141 struct nfs_cb_data *data;
4142 struct nfs_chown_data *chown_data;
4143
4144 chown_data = malloc(sizeof(struct nfs_chown_data));
4145 if (chown_data == NULL) {
4146 rpc_set_error(nfs->rpc, "Failed to allocate memory for chown data structure");
4147 return -1;
4148 }
4149
4150 chown_data->uid = uid;
4151 chown_data->gid = gid;
4152
4153 data = malloc(sizeof(struct nfs_cb_data));
4154 if (data == NULL) {
4155 rpc_set_error(nfs->rpc, "out of memory. failed to allocate memory for fchown data");
4156 free(chown_data);
4157 return -1;
4158 }
4159 memset(data, 0, sizeof(struct nfs_cb_data));
4160 data->nfs = nfs;
4161 data->cb = cb;
4162 data->private_data = private_data;
4163 data->continue_data = chown_data;
4164 data->free_continue_data = free;
4165 data->fh.data.data_len = nfsfh->fh.data.data_len;
4166 data->fh.data.data_val = malloc(data->fh.data.data_len);
4167 if (data->fh.data.data_val == NULL) {
4168 rpc_set_error(nfs->rpc, "Out of memory: Failed to allocate fh");
4169 free_nfs_cb_data(data);
4170 return -1;
4171 }
4172 memcpy(data->fh.data.data_val, nfsfh->fh.data.data_val, data->fh.data.data_len);
4173
4174 if (nfs_chown_continue_internal(nfs, NULL, data) != 0) {
4175 return -1;
4176 }
4177
4178 return 0;
4179 }
4180
4181
4182
4183
4184
4185 /*
4186 * Async utimes()
4187 */
4188 static void nfs_utimes_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
4189 {
4190 struct nfs_cb_data *data = private_data;
4191 struct nfs_context *nfs = data->nfs;
4192 SETATTR3res *res;
4193
4194 assert(rpc->magic == RPC_CONTEXT_MAGIC);
4195
4196 if (status == RPC_STATUS_ERROR) {
4197 data->cb(-EFAULT, nfs, command_data, data->private_data);
4198 free_nfs_cb_data(data);
4199 return;
4200 }
4201 if (status == RPC_STATUS_CANCEL) {
4202 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
4203 free_nfs_cb_data(data);
4204 return;
4205 }
4206
4207 res = command_data;
4208 if (res->status != NFS3_OK) {
4209 rpc_set_error(nfs->rpc, "NFS: SETATTR failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
4210 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
4211 free_nfs_cb_data(data);
4212 return;
4213 }
4214
4215 data->cb(0, nfs, NULL, data->private_data);
4216 free_nfs_cb_data(data);
4217 }
4218
4219 static int nfs_utimes_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
4220 {
4221 SETATTR3args args;
4222 struct timeval *utimes_data = data->continue_data;
4223
4224 memset(&args, 0, sizeof(SETATTR3args));
4225 args.object = data->fh;
4226 if (utimes_data != NULL) {
4227 args.new_attributes.atime.set_it = SET_TO_CLIENT_TIME;
4228 args.new_attributes.atime.set_atime_u.atime.seconds = utimes_data[0].tv_sec;
4229 args.new_attributes.atime.set_atime_u.atime.nseconds = utimes_data[0].tv_usec * 1000;
4230 args.new_attributes.mtime.set_it = SET_TO_CLIENT_TIME;
4231 args.new_attributes.mtime.set_mtime_u.mtime.seconds = utimes_data[1].tv_sec;
4232 args.new_attributes.mtime.set_mtime_u.mtime.nseconds = utimes_data[1].tv_usec * 1000;
4233 } else {
4234 args.new_attributes.atime.set_it = SET_TO_SERVER_TIME;
4235 args.new_attributes.mtime.set_it = SET_TO_SERVER_TIME;
4236 }
4237
4238 if (rpc_nfs3_setattr_async(nfs->rpc, nfs_utimes_cb, &args, data) != 0) {
4239 rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
4240 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
4241 free_nfs_cb_data(data);
4242 return -1;
4243 }
4244 return 0;
4245 }
4246
4247 int nfs_utimes_async_internal(struct nfs_context *nfs, const char *path, int no_follow, struct timeval *times, nfs_cb cb, void *private_data)
4248 {
4249 struct timeval *new_times = NULL;
4250
4251 if (times != NULL) {
4252 new_times = malloc(sizeof(struct timeval)*2);
4253 if (new_times == NULL) {
4254 rpc_set_error(nfs->rpc, "Failed to allocate memory for timeval structure");
4255 return -1;
4256 }
4257
4258 memcpy(new_times, times, sizeof(struct timeval)*2);
4259 }
4260
4261 if (nfs_lookuppath_async(nfs, path, no_follow, cb, private_data, nfs_utimes_continue_internal, new_times, free, 0) != 0) {
4262 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
4263 return -1;
4264 }
4265
4266 return 0;
4267 }
4268
4269 int nfs_utimes_async(struct nfs_context *nfs, const char *path, struct timeval *times, nfs_cb cb, void *private_data)
4270 {
4271 return nfs_utimes_async_internal(nfs, path, 0, times, cb, private_data);
4272 }
4273
4274 int nfs_lutimes_async(struct nfs_context *nfs, const char *path, struct timeval *times, nfs_cb cb, void *private_data)
4275 {
4276 return nfs_utimes_async_internal(nfs, path, 1, times, cb, private_data);
4277 }
4278
4279 /*
4280 * Async utime()
4281 */
4282 int nfs_utime_async(struct nfs_context *nfs, const char *path, struct utimbuf *times, nfs_cb cb, void *private_data)
4283 {
4284 struct timeval *new_times = NULL;
4285
4286 if (times != NULL) {
4287 new_times = malloc(sizeof(struct timeval)*2);
4288 if (new_times == NULL) {
4289 rpc_set_error(nfs->rpc, "Failed to allocate memory for timeval structure");
4290 return -1;
4291 }
4292
4293 new_times[0].tv_sec = times->actime;
4294 new_times[0].tv_usec = 0;
4295 new_times[1].tv_sec = times->modtime;
4296 new_times[1].tv_usec = 0;
4297 }
4298
4299 if (nfs_lookuppath_async(nfs, path, 0, cb, private_data, nfs_utimes_continue_internal, new_times, free, 0) != 0) {
4300 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
4301 return -1;
4302 }
4303
4304 return 0;
4305 }
4306
4307
4308 /*
4309 * Async access()
4310 */
4311 static void nfs_access_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
4312 {
4313 ACCESS3res *res;
4314 struct nfs_cb_data *data = private_data;
4315 struct nfs_context *nfs = data->nfs;
4316 unsigned int nfsmode = 0;
4317
4318 assert(rpc->magic == RPC_CONTEXT_MAGIC);
4319
4320 if (status == RPC_STATUS_ERROR) {
4321 data->cb(-EFAULT, nfs, command_data, data->private_data);
4322 free_nfs_cb_data(data);
4323 return;
4324 }
4325 if (status == RPC_STATUS_CANCEL) {
4326 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
4327 free_nfs_cb_data(data);
4328 return;
4329 }
4330
4331 res = command_data;
4332 if (res->status != NFS3_OK) {
4333 rpc_set_error(nfs->rpc, "NFS: ACCESS of %s failed with %s(%d)", data->saved_path, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
4334 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
4335 free_nfs_cb_data(data);
4336 return;
4337 }
4338
4339 if (data->continue_int & R_OK) {
4340 nfsmode |= ACCESS3_READ;
4341 }
4342 if (data->continue_int & W_OK) {
4343 nfsmode |= ACCESS3_MODIFY;
4344 }
4345 if (data->continue_int & X_OK) {
4346 nfsmode |= ACCESS3_EXECUTE;
4347 }
4348
4349 if (res->ACCESS3res_u.resok.access != nfsmode) {
4350 rpc_set_error(nfs->rpc, "NFS: ACCESS denied. Required access %c%c%c. Allowed access %c%c%c",
4351 nfsmode&ACCESS3_READ?'r':'-',
4352 nfsmode&ACCESS3_MODIFY?'w':'-',
4353 nfsmode&ACCESS3_EXECUTE?'x':'-',
4354 res->ACCESS3res_u.resok.access&ACCESS3_READ?'r':'-',
4355 res->ACCESS3res_u.resok.access&ACCESS3_MODIFY?'w':'-',
4356 res->ACCESS3res_u.resok.access&ACCESS3_EXECUTE?'x':'-');
4357 data->cb(-EACCES, nfs, rpc_get_error(nfs->rpc), data->private_data);
4358 free_nfs_cb_data(data);
4359 return;
4360 }
4361
4362 data->cb(0, nfs, NULL, data->private_data);
4363 free_nfs_cb_data(data);
4364 }
4365
4366 static int nfs_access_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
4367 {
4368 int nfsmode = 0;
4369 ACCESS3args args;
4370
4371 if (data->continue_int & R_OK) {
4372 nfsmode |= ACCESS3_READ;
4373 }
4374 if (data->continue_int & W_OK) {
4375 nfsmode |= ACCESS3_MODIFY;
4376 }
4377 if (data->continue_int & X_OK) {
4378 nfsmode |= ACCESS3_EXECUTE;
4379 }
4380
4381 memset(&args, 0, sizeof(ACCESS3args));
4382 args.object = data->fh;
4383 args.access = nfsmode;
4384
4385 if (rpc_nfs3_access_async(nfs->rpc, nfs_access_cb, &args, data) != 0) {
4386 rpc_set_error(nfs->rpc, "RPC error: Failed to send OPEN ACCESS call for %s", data->path);
4387 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
4388 free_nfs_cb_data(data);
4389 return -1;
4390 }
4391 return 0;
4392 }
4393
4394 int nfs_access_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data)
4395 {
4396 if (nfs_lookuppath_async(nfs, path, 0, cb, private_data, nfs_access_continue_internal, NULL, NULL, mode) != 0) {
4397 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
4398 return -1;
4399 }
4400
4401 return 0;
4402 }
4403
4404
4405
4406 /*
4407 * Async symlink()
4408 */
4409 struct nfs_symlink_data {
4410 char *oldpath;
4411 char *newpathparent;
4412 char *newpathobject;
4413 };
4414
4415 static void free_nfs_symlink_data(void *mem)
4416 {
4417 struct nfs_symlink_data *data = mem;
4418
4419 if (data->oldpath != NULL) {
4420 free(data->oldpath);
4421 }
4422 if (data->newpathparent != NULL) {
4423 free(data->newpathparent);
4424 }
4425 if (data->newpathobject != NULL) {
4426 free(data->newpathobject);
4427 }
4428 free(data);
4429 }
4430
4431 static void nfs_symlink_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
4432 {
4433 SYMLINK3res *res;
4434 struct nfs_cb_data *data = private_data;
4435 struct nfs_context *nfs = data->nfs;
4436 struct nfs_symlink_data *symlink_data = data->continue_data;
4437
4438 assert(rpc->magic == RPC_CONTEXT_MAGIC);
4439
4440 if (status == RPC_STATUS_ERROR) {
4441 data->cb(-EFAULT, nfs, command_data, data->private_data);
4442 free_nfs_cb_data(data);
4443 return;
4444 }
4445 if (status == RPC_STATUS_CANCEL) {
4446 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
4447 free_nfs_cb_data(data);
4448 return;
4449 }
4450
4451 res = command_data;
4452 if (res->status != NFS3_OK) {
4453 rpc_set_error(nfs->rpc, "NFS: SYMLINK %s/%s -> %s failed with %s(%d)", symlink_data->newpathparent, symlink_data->newpathobject, symlink_data->oldpath, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
4454 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
4455 free_nfs_cb_data(data);
4456 return;
4457 }
4458
4459 data->cb(0, nfs, NULL, data->private_data);
4460 free_nfs_cb_data(data);
4461 }
4462
4463 static int nfs_symlink_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
4464 {
4465 struct nfs_symlink_data *symlink_data = data->continue_data;
4466 SYMLINK3args args;
4467
4468 memset(&args, 0, sizeof(SYMLINK3args));
4469 args.where.dir = data->fh;
4470 args.where.name = symlink_data->newpathobject;
4471 args.symlink.symlink_attributes.mode.set_it = 1;
4472 args.symlink.symlink_attributes.mode.set_mode3_u.mode = S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH;
4473 args.symlink.symlink_data = symlink_data->oldpath;
4474
4475 if (rpc_nfs3_symlink_async(nfs->rpc, nfs_symlink_cb, &args, data) != 0) {
4476 rpc_set_error(nfs->rpc, "RPC error: Failed to send SYMLINK call for %s", data->path);
4477 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
4478 free_nfs_cb_data(data);
4479 return -1;
4480 }
4481 return 0;
4482 }
4483
4484 int nfs_symlink_async(struct nfs_context *nfs, const char *oldpath, const char *newpath, nfs_cb cb, void *private_data)
4485 {
4486 char *ptr;
4487 struct nfs_symlink_data *symlink_data;
4488
4489 symlink_data = malloc(sizeof(struct nfs_symlink_data));
4490 if (symlink_data == NULL) {
4491 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for symlink data");
4492 return -1;
4493 }
4494 memset(symlink_data, 0, sizeof(struct nfs_symlink_data));
4495
4496 symlink_data->oldpath = strdup(oldpath);
4497 if (symlink_data->oldpath == NULL) {
4498 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for oldpath");
4499 free_nfs_symlink_data(symlink_data);
4500 return -1;
4501 }
4502
4503 symlink_data->newpathparent = strdup(newpath);
4504 if (symlink_data->newpathparent == NULL) {
4505 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for new path");
4506 free_nfs_symlink_data(symlink_data);
4507 return -1;
4508 }
4509
4510 ptr = strrchr(symlink_data->newpathparent, '/');
4511 if (ptr == NULL) {
4512 rpc_set_error(nfs->rpc, "Invalid path %s", oldpath);
4513 free_nfs_symlink_data(symlink_data);
4514 return -1;
4515 }
4516 *ptr = 0;
4517 ptr++;
4518
4519 symlink_data->newpathobject = strdup(ptr);
4520 if (symlink_data->newpathobject == NULL) {
4521 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for new path");
4522 free_nfs_symlink_data(symlink_data);
4523 return -1;
4524 }
4525
4526 if (nfs_lookuppath_async(nfs, symlink_data->newpathparent, 0, cb, private_data, nfs_symlink_continue_internal, symlink_data, free_nfs_symlink_data, 0) != 0) {
4527 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
4528 return -1;
4529 }
4530
4531 return 0;
4532 }
4533
4534
4535
4536 /*
4537 * Async rename()
4538 */
4539 struct nfs_rename_data {
4540 char *oldpath;
4541 char *oldobject;
4542 struct nfs_fh3 olddir;
4543 char *newpath;
4544 char *newobject;
4545 struct nfs_fh3 newdir;
4546 };
4547
4548 static void free_nfs_rename_data(void *mem)
4549 {
4550 struct nfs_rename_data *data = mem;
4551
4552 if (data->oldpath != NULL) {
4553 free(data->oldpath);
4554 }
4555 if (data->olddir.data.data_val != NULL) {
4556 free(data->olddir.data.data_val);
4557 }
4558 if (data->newpath != NULL) {
4559 free(data->newpath);
4560 }
4561 if (data->newdir.data.data_val != NULL) {
4562 free(data->newdir.data.data_val);
4563 }
4564 free(data);
4565 }
4566
4567 static void nfs_rename_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
4568 {
4569 RENAME3res *res;
4570 struct nfs_cb_data *data = private_data;
4571 struct nfs_context *nfs = data->nfs;
4572 struct nfs_rename_data *rename_data = data->continue_data;
4573
4574 assert(rpc->magic == RPC_CONTEXT_MAGIC);
4575
4576 if (status == RPC_STATUS_ERROR) {
4577 data->cb(-EFAULT, nfs, command_data, data->private_data);
4578 free_nfs_cb_data(data);
4579 return;
4580 }
4581 if (status == RPC_STATUS_CANCEL) {
4582 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
4583 free_nfs_cb_data(data);
4584 return;
4585 }
4586
4587 res = command_data;
4588 if (res->status != NFS3_OK) {
4589 rpc_set_error(nfs->rpc, "NFS: RENAME %s/%s -> %s/%s failed with %s(%d)", rename_data->oldpath, rename_data->oldobject, rename_data->newpath, rename_data->newobject, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
4590 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
4591 free_nfs_cb_data(data);
4592 return;
4593 }
4594
4595 data->cb(0, nfs, NULL, data->private_data);
4596 free_nfs_cb_data(data);
4597 }
4598
4599 static int nfs_rename_continue_2_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
4600 {
4601 struct nfs_rename_data *rename_data = data->continue_data;
4602 RENAME3args args;
4603
4604 /* steal the filehandle */
4605 rename_data->newdir = data->fh;
4606 data->fh.data.data_val = NULL;
4607
4608 args.from.dir = rename_data->olddir;
4609 args.from.name = rename_data->oldobject;
4610 args.to.dir = rename_data->newdir;
4611 args.to.name = rename_data->newobject;
4612 if (rpc_nfs3_rename_async(nfs->rpc, nfs_rename_cb, &args, data) != 0) {
4613 rpc_set_error(nfs->rpc, "RPC error: Failed to send RENAME call for %s", data->path);
4614 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
4615 free_nfs_cb_data(data);
4616 return -1;
4617 }
4618 return 0;
4619 }
4620
4621
4622 static int nfs_rename_continue_1_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
4623 {
4624 struct nfs_rename_data *rename_data = data->continue_data;
4625 char* newpath = strdup(rename_data->newpath);
4626 if (!newpath) {
4627 rpc_set_error(nfs->rpc, "Out of memory. Could not allocate memory to store target path for rename");
4628 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
4629 free_nfs_cb_data(data);
4630 return -1;
4631 }
4632
4633 /* steal the filehandle */
4634 rename_data->olddir = data->fh;
4635 data->fh.data.data_val = NULL;
4636
4637 if (nfs_lookuppath_async(nfs, rename_data->newpath, 0, data->cb, data->private_data, nfs_rename_continue_2_internal, rename_data, free_nfs_rename_data, 0) != 0) {
4638 rpc_set_error(nfs->rpc, "RPC error: Failed to send LOOKUP call for %s", newpath);
4639 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
4640 free_nfs_cb_data(data);
4641 free(newpath);
4642 return -1;
4643 }
4644 data->continue_data = NULL;
4645 free_nfs_cb_data(data);
4646 free(newpath);
4647
4648 return 0;
4649 }
4650
4651
4652 int nfs_rename_async(struct nfs_context *nfs, const char *oldpath, const char *newpath, nfs_cb cb, void *private_data)
4653 {
4654 char *ptr;
4655 struct nfs_rename_data *rename_data;
4656
4657 rename_data = malloc(sizeof(struct nfs_rename_data));
4658 if (rename_data == NULL) {
4659 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for rename data");
4660 return -1;
4661 }
4662 memset(rename_data, 0, sizeof(struct nfs_rename_data));
4663
4664 rename_data->oldpath = strdup(oldpath);
4665 if (rename_data->oldpath == NULL) {
4666 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for oldpath");
4667 free_nfs_rename_data(rename_data);
4668 return -1;
4669 }
4670 ptr = strrchr(rename_data->oldpath, '/');
4671 if (ptr == NULL) {
4672 rpc_set_error(nfs->rpc, "Invalid path %s", oldpath);
4673 free_nfs_rename_data(rename_data);
4674 return -1;
4675 }
4676 *ptr = 0;
4677 ptr++;
4678 rename_data->oldobject = ptr;
4679
4680
4681 rename_data->newpath = strdup(newpath);
4682 if (rename_data->newpath == NULL) {
4683 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for newpath");
4684 free_nfs_rename_data(rename_data);
4685 return -1;
4686 }
4687 ptr = strrchr(rename_data->newpath, '/');
4688 if (ptr == NULL) {
4689 rpc_set_error(nfs->rpc, "Invalid path %s", newpath);
4690 free_nfs_rename_data(rename_data);
4691 return -1;
4692 }
4693 *ptr = 0;
4694 ptr++;
4695 rename_data->newobject = ptr;
4696
4697
4698 if (nfs_lookuppath_async(nfs, rename_data->oldpath, 0, cb, private_data, nfs_rename_continue_1_internal, rename_data, free_nfs_rename_data, 0) != 0) {
4699 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
4700 return -1;
4701 }
4702
4703 return 0;
4704 }
4705
4706
4707 /*
4708 * Async link()
4709 */
4710 struct nfs_link_data {
4711 char *oldpath;
4712 struct nfs_fh3 oldfh;
4713 char *newpath;
4714 char *newobject;
4715 struct nfs_fh3 newdir;
4716 };
4717
4718 static void free_nfs_link_data(void *mem)
4719 {
4720 struct nfs_link_data *data = mem;
4721
4722 if (data->oldpath != NULL) {
4723 free(data->oldpath);
4724 }
4725 if (data->oldfh.data.data_val != NULL) {
4726 free(data->oldfh.data.data_val);
4727 }
4728 if (data->newpath != NULL) {
4729 free(data->newpath);
4730 }
4731 if (data->newdir.data.data_val != NULL) {
4732 free(data->newdir.data.data_val);
4733 }
4734 free(data);
4735 }
4736
4737 static void nfs_link_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
4738 {
4739 LINK3res *res;
4740 struct nfs_cb_data *data = private_data;
4741 struct nfs_context *nfs = data->nfs;
4742 struct nfs_link_data *link_data = data->continue_data;
4743
4744 assert(rpc->magic == RPC_CONTEXT_MAGIC);
4745
4746 if (status == RPC_STATUS_ERROR) {
4747 data->cb(-EFAULT, nfs, command_data, data->private_data);
4748 free_nfs_cb_data(data);
4749 return;
4750 }
4751 if (status == RPC_STATUS_CANCEL) {
4752 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
4753 free_nfs_cb_data(data);
4754 return;
4755 }
4756
4757 res = command_data;
4758 if (res->status != NFS3_OK) {
4759 rpc_set_error(nfs->rpc, "NFS: LINK %s -> %s/%s failed with %s(%d)", link_data->oldpath, link_data->newpath, link_data->newobject, nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
4760 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
4761 free_nfs_cb_data(data);
4762 return;
4763 }
4764
4765 data->cb(0, nfs, NULL, data->private_data);
4766 free_nfs_cb_data(data);
4767 }
4768
4769 static int nfs_link_continue_2_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
4770 {
4771 struct nfs_link_data *link_data = data->continue_data;
4772 LINK3args args;
4773
4774 /* steal the filehandle */
4775 link_data->newdir = data->fh;
4776 data->fh.data.data_val = NULL;
4777
4778 memset(&args, 0, sizeof(LINK3args));
4779 args.file = link_data->oldfh;
4780 args.link.dir = link_data->newdir;
4781 args.link.name = link_data->newobject;
4782 if (rpc_nfs3_link_async(nfs->rpc, nfs_link_cb, &args, data) != 0) {
4783 rpc_set_error(nfs->rpc, "RPC error: Failed to send LINK call for %s", data->path);
4784 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
4785 free_nfs_cb_data(data);
4786 return -1;
4787 }
4788 return 0;
4789 }
4790
4791
4792 static int nfs_link_continue_1_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
4793 {
4794 struct nfs_link_data *link_data = data->continue_data;
4795
4796 /* steal the filehandle */
4797 link_data->oldfh = data->fh;
4798 data->fh.data.data_val = NULL;
4799
4800 if (nfs_lookuppath_async(nfs, link_data->newpath, 0, data->cb, data->private_data, nfs_link_continue_2_internal, link_data, free_nfs_link_data, 0) != 0) {
4801 rpc_set_error(nfs->rpc, "RPC error: Failed to send LOOKUP call for %s", link_data->newpath);
4802 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
4803 free_nfs_cb_data(data);
4804 return -1;
4805 }
4806 data->continue_data = NULL;
4807 free_nfs_cb_data(data);
4808
4809 return 0;
4810 }
4811
4812
4813 int nfs_link_async(struct nfs_context *nfs, const char *oldpath, const char *newpath, nfs_cb cb, void *private_data)
4814 {
4815 char *ptr;
4816 struct nfs_link_data *link_data;
4817
4818 link_data = malloc(sizeof(struct nfs_link_data));
4819 if (link_data == NULL) {
4820 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for link data");
4821 return -1;
4822 }
4823 memset(link_data, 0, sizeof(struct nfs_link_data));
4824
4825 link_data->oldpath = strdup(oldpath);
4826 if (link_data->oldpath == NULL) {
4827 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for oldpath");
4828 free_nfs_link_data(link_data);
4829 return -1;
4830 }
4831
4832 link_data->newpath = strdup(newpath);
4833 if (link_data->newpath == NULL) {
4834 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for newpath");
4835 free_nfs_link_data(link_data);
4836 return -1;
4837 }
4838 ptr = strrchr(link_data->newpath, '/');
4839 if (ptr == NULL) {
4840 rpc_set_error(nfs->rpc, "Invalid path %s", newpath);
4841 free_nfs_link_data(link_data);
4842 return -1;
4843 }
4844 *ptr = 0;
4845 ptr++;
4846 link_data->newobject = ptr;
4847
4848
4849 if (nfs_lookuppath_async(nfs, link_data->oldpath, 0, cb, private_data, nfs_link_continue_1_internal, link_data, free_nfs_link_data, 0) != 0) {
4850 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
4851 return -1;
4852 }
4853
4854 return 0;
4855 }
4856
4857
4858 //qqq replace later with lseek()
4859 uint64_t nfs_get_current_offset(struct nfsfh *nfsfh)
4860 {
4861 return nfsfh->offset;
4862 }
4863
4864
4865
4866 /*
4867 * Get the maximum supported READ3 size by the server
4868 */
4869 uint64_t nfs_get_readmax(struct nfs_context *nfs)
4870 {
4871 return nfs->readmax;
4872 }
4873
4874 /*
4875 * Get the maximum supported WRITE3 size by the server
4876 */
4877 uint64_t nfs_get_writemax(struct nfs_context *nfs)
4878 {
4879 return nfs->writemax;
4880 }
4881
4882 void nfs_set_tcp_syncnt(struct nfs_context *nfs, int v) {
4883 rpc_set_tcp_syncnt(nfs->rpc, v);
4884 }
4885
4886 void nfs_set_uid(struct nfs_context *nfs, int uid) {
4887 rpc_set_uid(nfs->rpc, uid);
4888 }
4889
4890 void nfs_set_gid(struct nfs_context *nfs, int gid) {
4891 rpc_set_gid(nfs->rpc, gid);
4892 }
4893
4894 void nfs_set_readahead(struct nfs_context *nfs, uint32_t v) {
4895 rpc_set_readahead(nfs->rpc, v);
4896 }
4897
4898 void nfs_set_error(struct nfs_context *nfs, char *error_string, ...)
4899 {
4900 va_list ap;
4901 char *str = NULL;
4902
4903 va_start(ap, error_string);
4904 str = malloc(1024);
4905 vsnprintf(str, 1024, error_string, ap);
4906 if (nfs->rpc->error_string != NULL) {
4907 free(nfs->rpc->error_string);
4908 }
4909 nfs->rpc->error_string = str;
4910 va_end(ap);
4911 }
4912
4913
4914
4915 struct mount_cb_data {
4916 rpc_cb cb;
4917 void *private_data;
4918 char *server;
4919 };
4920
4921 static void free_mount_cb_data(struct mount_cb_data *data)
4922 {
4923 if (data->server != NULL) {
4924 free(data->server);
4925 data->server = NULL;
4926 }
4927
4928 free(data);
4929 }
4930
4931 static void mount_export_5_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
4932 {
4933 struct mount_cb_data *data = private_data;
4934
4935 assert(rpc->magic == RPC_CONTEXT_MAGIC);
4936
4937 if (status == RPC_STATUS_ERROR) {
4938 data->cb(rpc, -EFAULT, command_data, data->private_data);
4939 free_mount_cb_data(data);
4940 return;
4941 }
4942 if (status == RPC_STATUS_CANCEL) {
4943 data->cb(rpc, -EINTR, "Command was cancelled", data->private_data);
4944 free_mount_cb_data(data);
4945 return;
4946 }
4947
4948 data->cb(rpc, 0, command_data, data->private_data);
4949 if (rpc_disconnect(rpc, "normal disconnect") != 0) {
4950 rpc_set_error(rpc, "Failed to disconnect\n");
4951 }
4952 free_mount_cb_data(data);
4953 }
4954
4955 static void mount_export_4_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
4956 {
4957 struct mount_cb_data *data = private_data;
4958
4959 assert(rpc->magic == RPC_CONTEXT_MAGIC);
4960
4961 /* Dont want any more callbacks even if the socket is closed */
4962 rpc->connect_cb = NULL;
4963
4964 if (status == RPC_STATUS_ERROR) {
4965 data->cb(rpc, -EFAULT, command_data, data->private_data);
4966 free_mount_cb_data(data);
4967 return;
4968 }
4969 if (status == RPC_STATUS_CANCEL) {
4970 data->cb(rpc, -EINTR, "Command was cancelled", data->private_data);
4971 free_mount_cb_data(data);
4972 return;
4973 }
4974
4975 if (rpc_mount3_export_async(rpc, mount_export_5_cb, data) != 0) {
4976 data->cb(rpc, -ENOMEM, command_data, data->private_data);
4977 free_mount_cb_data(data);
4978 return;
4979 }
4980 }
4981
4982 int mount_getexports_async(struct rpc_context *rpc, const char *server, rpc_cb cb, void *private_data)
4983 {
4984 struct mount_cb_data *data;
4985
4986 assert(rpc->magic == RPC_CONTEXT_MAGIC);
4987
4988 data = malloc(sizeof(struct mount_cb_data));
4989 if (data == NULL) {
4990 return -1;
4991 }
4992 memset(data, 0, sizeof(struct mount_cb_data));
4993 data->cb = cb;
4994 data->private_data = private_data;
4995 data->server = strdup(server);
4996 if (data->server == NULL) {
4997 free_mount_cb_data(data);
4998 return -1;
4999 }
5000 if (rpc_connect_program_async(rpc, data->server, MOUNT_PROGRAM, MOUNT_V3, mount_export_4_cb, data) != 0) {
5001 rpc_set_error(rpc, "Failed to start connection");
5002 free_mount_cb_data(data);
5003 return -1;
5004 }
5005
5006 return 0;
5007 }
5008
5009 struct rpc_context *nfs_get_rpc_context(struct nfs_context *nfs)
5010 {
5011 assert(nfs->rpc->magic == RPC_CONTEXT_MAGIC);
5012 return nfs->rpc;
5013 }
5014
5015 const char *nfs_get_server(struct nfs_context *nfs) {
5016 return nfs->server;
5017 }
5018
5019 const char *nfs_get_export(struct nfs_context *nfs) {
5020 return nfs->export;
5021 }
5022
5023 const struct nfs_fh3 *nfs_get_rootfh(struct nfs_context *nfs) {
5024 return &nfs->rootfh;
5025 }
5026
5027 struct nfs_fh3 *nfs_get_fh(struct nfsfh *nfsfh) {
5028 return &nfsfh->fh;
5029 }
libnfs Piment Noir Debian package repository