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libnfs: Add access2()
[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 <time.h>
77 #include <sys/types.h>
78 #include <sys/stat.h>
79 #include <fcntl.h>
80 #include "libnfs-zdr.h"
81 #include "slist.h"
82 #include "libnfs.h"
83 #include "libnfs-raw.h"
84 #include "libnfs-raw-mount.h"
85 #include "libnfs-raw-nfs.h"
86 #include "libnfs-raw-portmap.h"
87 #include "libnfs-private.h"
88
89 #define MAX_DIR_CACHE 128
90 #define MAX_LINK_COUNT 40
91
92 struct nfsdir {
93 struct nfs_fh3 fh;
94 fattr3 attr;
95 struct nfsdir *next;
96
97 struct nfsdirent *entries;
98 struct nfsdirent *current;
99 };
100
101 struct nfs_readahead {
102 uint64_t fh_offset;
103 uint64_t last_offset;
104 uint64_t buf_offset;
105 uint64_t buf_count;
106 time_t buf_ts;
107 void *buf;
108 uint32_t cur_ra;
109 };
110
111 struct nfsfh {
112 struct nfs_fh3 fh;
113 int is_sync;
114 int is_append;
115 uint64_t offset;
116 struct nfs_readahead ra;
117 };
118
119 struct nfs_context {
120 struct rpc_context *rpc;
121 char *server;
122 char *export;
123 struct nfs_fh3 rootfh;
124 uint64_t readmax;
125 uint64_t writemax;
126 char *cwd;
127 struct nfsdir *dircache;
128 };
129
130 void nfs_free_nfsdir(struct nfsdir *nfsdir)
131 {
132 while (nfsdir->entries) {
133 struct nfsdirent *dirent = nfsdir->entries->next;
134 if (nfsdir->entries->name != NULL) {
135 free(nfsdir->entries->name);
136 }
137 free(nfsdir->entries);
138 nfsdir->entries = dirent;
139 }
140 free(nfsdir->fh.data.data_val);
141 free(nfsdir);
142 }
143
144 static void nfs_dircache_add(struct nfs_context *nfs, struct nfsdir *nfsdir)
145 {
146 int i;
147 LIBNFS_LIST_ADD(&nfs->dircache, nfsdir);
148
149 for (nfsdir = nfs->dircache, i = 0; nfsdir; nfsdir = nfsdir->next, i++) {
150 if (i > MAX_DIR_CACHE) {
151 LIBNFS_LIST_REMOVE(&nfs->dircache, nfsdir);
152 nfs_free_nfsdir(nfsdir);
153 break;
154 }
155 }
156 }
157
158 static struct nfsdir *nfs_dircache_find(struct nfs_context *nfs, struct nfs_fh3 *fh)
159 {
160 struct nfsdir *nfsdir;
161
162 for (nfsdir = nfs->dircache; nfsdir; nfsdir = nfsdir->next) {
163 if (nfsdir->fh.data.data_len == fh->data.data_len &&
164 !memcmp(nfsdir->fh.data.data_val, fh->data.data_val, fh->data.data_len)) {
165 LIBNFS_LIST_REMOVE(&nfs->dircache, nfsdir);
166 return nfsdir;
167 }
168 }
169
170 return NULL;
171 }
172
173 struct nfs_cb_data;
174 typedef int (*continue_func)(struct nfs_context *nfs, fattr3 *attr,
175 struct nfs_cb_data *data);
176
177 struct nfs_cb_data {
178 struct nfs_context *nfs;
179 struct nfsfh *nfsfh;
180 char *saved_path, *path;
181 int link_count, no_follow;
182
183 nfs_cb cb;
184 void *private_data;
185
186 continue_func continue_cb;
187 void *continue_data;
188 void (*free_continue_data)(void *);
189 int continue_int;
190
191 struct nfs_fh3 fh;
192
193 /* for multi-read/write calls. */
194 int error;
195 int cancel;
196 int oom;
197 int num_calls;
198 uint64_t offset, count, max_offset, org_offset, org_count;
199 char *buffer;
200 char *usrbuf;
201 };
202
203 struct nfs_mcb_data {
204 struct nfs_cb_data *data;
205 uint64_t offset;
206 uint64_t count;
207 int update_pos;
208 };
209
210 static int nfs_lookup_path_async_internal(struct nfs_context *nfs, fattr3 *attr, struct nfs_cb_data *data, struct nfs_fh3 *fh);
211 static int nfs_normalize_path(struct nfs_context *nfs, char *path);
212
213 void nfs_set_auth(struct nfs_context *nfs, struct AUTH *auth)
214 {
215 rpc_set_auth(nfs->rpc, auth);
216 }
217
218 int nfs_get_fd(struct nfs_context *nfs)
219 {
220 return rpc_get_fd(nfs->rpc);
221 }
222
223 int nfs_queue_length(struct nfs_context *nfs)
224 {
225 return rpc_queue_length(nfs->rpc);
226 }
227
228 int nfs_which_events(struct nfs_context *nfs)
229 {
230 return rpc_which_events(nfs->rpc);
231 }
232
233 int nfs_service(struct nfs_context *nfs, int revents)
234 {
235 return rpc_service(nfs->rpc, revents);
236 }
237
238 char *nfs_get_error(struct nfs_context *nfs)
239 {
240 return rpc_get_error(nfs->rpc);
241 };
242
243 static int nfs_set_context_args(struct nfs_context *nfs, char *arg, char *val)
244 {
245 if (!strcmp(arg, "tcp-syncnt")) {
246 rpc_set_tcp_syncnt(nfs_get_rpc_context(nfs), atoi(val));
247 } else if (!strcmp(arg, "uid")) {
248 rpc_set_uid(nfs_get_rpc_context(nfs), atoi(val));
249 } else if (!strcmp(arg, "gid")) {
250 rpc_set_gid(nfs_get_rpc_context(nfs), atoi(val));
251 } else if (!strcmp(arg, "readahaed")) {
252 rpc_set_readahead(nfs_get_rpc_context(nfs), atoi(val));
253 }
254 return 0;
255 }
256
257 static struct nfs_url *nfs_parse_url(struct nfs_context *nfs, const char *url, int dir, int incomplete)
258 {
259 struct nfs_url *urls;
260 char *strp, *flagsp, *strp2;
261
262 if (strncmp(url, "nfs://", 6)) {
263 rpc_set_error(nfs->rpc, "Invalid URL specified");
264 return NULL;
265 }
266
267 urls = malloc(sizeof(struct nfs_url));
268 if (urls == NULL) {
269 rpc_set_error(nfs->rpc, "Out of memory");
270 return NULL;
271 }
272
273 memset(urls, 0x00, sizeof(struct nfs_url));
274 urls->server = strdup(url + 6);
275 if (urls->server == NULL) {
276 nfs_destroy_url(urls);
277 rpc_set_error(nfs->rpc, "Out of memory");
278 return NULL;
279 }
280
281 if (urls->server[0] == '/' || urls->server[0] == '\0' ||
282 urls->server[0] == '?') {
283 if (incomplete) {
284 flagsp = strchr(urls->server, '?');
285 goto flags;
286 }
287 nfs_destroy_url(urls);
288 rpc_set_error(nfs->rpc, "Invalid server string");
289 return NULL;
290 }
291
292 strp = strchr(urls->server, '/');
293 if (strp == NULL) {
294 if (incomplete) {
295 flagsp = strchr(urls->server, '?');
296 goto flags;
297 }
298 nfs_destroy_url(urls);
299 rpc_set_error(nfs->rpc, "Incomplete or invalid URL specified.");
300 return NULL;
301 }
302
303 urls->path = strdup(strp);
304 if (urls->path == NULL) {
305 nfs_destroy_url(urls);
306 rpc_set_error(nfs->rpc, "Out of memory");
307 return NULL;
308 }
309 *strp = 0;
310
311 if (dir) {
312 flagsp = strchr(urls->path, '?');
313 goto flags;
314 }
315
316 strp = strrchr(urls->path, '/');
317 if (strp == NULL) {
318 if (incomplete) {
319 flagsp = strchr(urls->path, '?');
320 goto flags;
321 }
322 nfs_destroy_url(urls);
323 rpc_set_error(nfs->rpc, "Incomplete or invalid URL specified.");
324 return NULL;
325 }
326 urls->file = strdup(strp);
327 if (urls->path == NULL) {
328 nfs_destroy_url(urls);
329 rpc_set_error(nfs->rpc, "Out of memory");
330 return NULL;
331 }
332 *strp = 0;
333 flagsp = strchr(urls->file, '?');
334
335 flags:
336 if (flagsp) {
337 *flagsp = 0;
338 }
339
340 if (urls->file && !strlen(urls->file)) {
341 free(urls->file);
342 urls->file = NULL;
343 if (!incomplete) {
344 nfs_destroy_url(urls);
345 rpc_set_error(nfs->rpc, "Incomplete or invalid URL specified.");
346 return NULL;
347 }
348 }
349
350 while (flagsp != NULL && *(flagsp+1) != 0) {
351 strp = flagsp + 1;
352 flagsp = strchr(strp, '&');
353 if (flagsp) {
354 *flagsp = 0;
355 }
356 strp2 = strchr(strp, '=');
357 if (strp2) {
358 *strp2 = 0;
359 strp2++;
360 nfs_set_context_args(nfs, strp, strp2);
361 }
362 }
363
364 if (urls->server && strlen(urls->server) <= 1) {
365 free(urls->server);
366 urls->server = NULL;
367 }
368
369 return urls;
370 }
371
372 struct nfs_url *nfs_parse_url_full(struct nfs_context *nfs, const char *url)
373 {
374 return nfs_parse_url(nfs, url, 0, 0);
375 }
376
377 struct nfs_url *nfs_parse_url_dir(struct nfs_context *nfs, const char *url)
378 {
379 return nfs_parse_url(nfs, url, 1, 0);
380 }
381
382 struct nfs_url *nfs_parse_url_incomplete(struct nfs_context *nfs, const char *url)
383 {
384 return nfs_parse_url(nfs, url, 0, 1);
385 }
386
387
388 void nfs_destroy_url(struct nfs_url *url)
389 {
390 if (url) {
391 free(url->server);
392 free(url->path);
393 free(url->file);
394 }
395 free(url);
396 }
397
398 struct nfs_context *nfs_init_context(void)
399 {
400 struct nfs_context *nfs;
401
402 nfs = malloc(sizeof(struct nfs_context));
403 if (nfs == NULL) {
404 return NULL;
405 }
406 memset(nfs, 0, sizeof(struct nfs_context));
407
408 nfs->rpc = rpc_init_context();
409 if (nfs->rpc == NULL) {
410 free(nfs);
411 return NULL;
412 }
413
414 nfs->cwd = strdup("/");
415
416 return nfs;
417 }
418
419 void nfs_destroy_context(struct nfs_context *nfs)
420 {
421 rpc_destroy_context(nfs->rpc);
422 nfs->rpc = NULL;
423
424 if (nfs->server) {
425 free(nfs->server);
426 nfs->server = NULL;
427 }
428
429 if (nfs->export) {
430 free(nfs->export);
431 nfs->export = NULL;
432 }
433
434 if (nfs->cwd) {
435 free(nfs->cwd);
436 nfs->cwd = NULL;
437 }
438
439 if (nfs->rootfh.data.data_val != NULL) {
440 free(nfs->rootfh.data.data_val);
441 nfs->rootfh.data.data_val = NULL;
442 }
443
444 while (nfs->dircache) {
445 struct nfsdir *nfsdir = nfs->dircache;
446 LIBNFS_LIST_REMOVE(&nfs->dircache, nfsdir);
447 nfs_free_nfsdir(nfsdir);
448 }
449
450 free(nfs);
451 }
452
453 struct rpc_cb_data {
454 char *server;
455 uint32_t program;
456 uint32_t version;
457
458 rpc_cb cb;
459 void *private_data;
460 };
461
462 void free_rpc_cb_data(struct rpc_cb_data *data)
463 {
464 free(data->server);
465 data->server = NULL;
466 free(data);
467 }
468
469 static void rpc_connect_program_5_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
470 {
471 struct rpc_cb_data *data = private_data;
472
473 assert(rpc->magic == RPC_CONTEXT_MAGIC);
474
475 /* Dont want any more callbacks even if the socket is closed */
476 rpc->connect_cb = NULL;
477
478 if (status == RPC_STATUS_ERROR) {
479 data->cb(rpc, status, command_data, data->private_data);
480 free_rpc_cb_data(data);
481 return;
482 }
483 if (status == RPC_STATUS_CANCEL) {
484 data->cb(rpc, status, "Command was cancelled", data->private_data);
485 free_rpc_cb_data(data);
486 return;
487 }
488
489 data->cb(rpc, status, NULL, data->private_data);
490 free_rpc_cb_data(data);
491 }
492
493 static void rpc_connect_program_4_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
494 {
495 struct rpc_cb_data *data = private_data;
496
497 assert(rpc->magic == RPC_CONTEXT_MAGIC);
498
499 /* Dont want any more callbacks even if the socket is closed */
500 rpc->connect_cb = NULL;
501
502 if (status == RPC_STATUS_ERROR) {
503 data->cb(rpc, status, command_data, data->private_data);
504 free_rpc_cb_data(data);
505 return;
506 }
507 if (status == RPC_STATUS_CANCEL) {
508 data->cb(rpc, status, "Command was cancelled", data->private_data);
509 free_rpc_cb_data(data);
510 return;
511 }
512
513 switch (data->program) {
514 case MOUNT_PROGRAM:
515 if (rpc_mount3_null_async(rpc, rpc_connect_program_5_cb,
516 data) != 0) {
517 data->cb(rpc, status, command_data, data->private_data);
518 free_rpc_cb_data(data);
519 return;
520 }
521 return;
522 case NFS_PROGRAM:
523 if (rpc_nfs3_null_async(rpc, rpc_connect_program_5_cb,
524 data) != 0) {
525 data->cb(rpc, status, command_data, data->private_data);
526 free_rpc_cb_data(data);
527 return;
528 }
529 return;
530 }
531
532 data->cb(rpc, status, NULL, data->private_data);
533 free_rpc_cb_data(data);
534 }
535
536 static void rpc_connect_program_3_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
537 {
538 struct rpc_cb_data *data = private_data;
539 struct pmap3_string_result *gar;
540 uint32_t rpc_port = 0;
541 unsigned char *ptr;
542
543 assert(rpc->magic == RPC_CONTEXT_MAGIC);
544
545 if (status == RPC_STATUS_ERROR) {
546 data->cb(rpc, status, command_data, data->private_data);
547 free_rpc_cb_data(data);
548 return;
549 }
550 if (status == RPC_STATUS_CANCEL) {
551 data->cb(rpc, status, "Command was cancelled", data->private_data);
552 free_rpc_cb_data(data);
553 return;
554 }
555
556 switch (rpc->s.ss_family) {
557 case AF_INET:
558 rpc_port = *(uint32_t *)command_data;
559 break;
560 case AF_INET6:
561 /* ouch. portmapper and ipv6 are not great */
562 gar = command_data;
563 if (gar->addr == NULL) {
564 break;
565 }
566 ptr = strrchr(gar->addr, '.');
567 if (ptr == NULL) {
568 break;
569 }
570 rpc_port = atoi(ptr + 1);
571 *ptr = 0;
572 ptr = strrchr(gar->addr, '.');
573 if (ptr == NULL) {
574 break;
575 }
576 rpc_port += 256 * atoi(ptr + 1);
577 break;
578 }
579 if (rpc_port == 0) {
580 rpc_set_error(rpc, "RPC error. Program is not available on %s", data->server);
581 data->cb(rpc, RPC_STATUS_ERROR, rpc_get_error(rpc), data->private_data);
582 free_rpc_cb_data(data);
583 return;
584 }
585
586 rpc_disconnect(rpc, "normal disconnect");
587 if (rpc_connect_async(rpc, data->server, rpc_port, rpc_connect_program_4_cb, data) != 0) {
588 data->cb(rpc, status, command_data, data->private_data);
589 free_rpc_cb_data(data);
590 return;
591 }
592 }
593
594 static void rpc_connect_program_2_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
595 {
596 struct rpc_cb_data *data = private_data;
597 struct pmap3_mapping map;
598
599 assert(rpc->magic == RPC_CONTEXT_MAGIC);
600
601 if (status == RPC_STATUS_ERROR) {
602 data->cb(rpc, status, command_data, data->private_data);
603 free_rpc_cb_data(data);
604 return;
605 }
606 if (status == RPC_STATUS_CANCEL) {
607 data->cb(rpc, status, "Command was cancelled", data->private_data);
608 free_rpc_cb_data(data);
609 return;
610 }
611
612 switch (rpc->s.ss_family) {
613 case AF_INET:
614 if (rpc_pmap2_getport_async(rpc, data->program, data->version, IPPROTO_TCP, rpc_connect_program_3_cb, private_data) != 0) {
615 data->cb(rpc, status, command_data, data->private_data);
616 free_rpc_cb_data(data);
617 return;
618 }
619 break;
620 case AF_INET6:
621 map.prog=data->program;
622 map.vers=data->version;
623 map.netid="";
624 map.addr="";
625 map.owner="";
626 if (rpc_pmap3_getaddr_async(rpc, &map, rpc_connect_program_3_cb, private_data) != 0) {
627 data->cb(rpc, status, command_data, data->private_data);
628 free_rpc_cb_data(data);
629 return;
630 }
631 break;
632 }
633 }
634
635 static void rpc_connect_program_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
636 {
637 struct rpc_cb_data *data = private_data;
638
639 assert(rpc->magic == RPC_CONTEXT_MAGIC);
640
641 /* Dont want any more callbacks even if the socket is closed */
642 rpc->connect_cb = NULL;
643
644 if (status == RPC_STATUS_ERROR) {
645 data->cb(rpc, status, command_data, data->private_data);
646 free_rpc_cb_data(data);
647 return;
648 }
649 if (status == RPC_STATUS_CANCEL) {
650 data->cb(rpc, status, "Command was cancelled", data->private_data);
651 free_rpc_cb_data(data);
652 return;
653 }
654
655 switch (rpc->s.ss_family) {
656 case AF_INET:
657 if (rpc_pmap2_null_async(rpc, rpc_connect_program_2_cb, data) != 0) {
658 data->cb(rpc, status, command_data, data->private_data);
659 free_rpc_cb_data(data);
660 return;
661 }
662 break;
663 case AF_INET6:
664 if (rpc_pmap3_null_async(rpc, rpc_connect_program_2_cb, data) != 0) {
665 data->cb(rpc, status, command_data, data->private_data);
666 free_rpc_cb_data(data);
667 return;
668 }
669 break;
670 }
671 }
672
673 int rpc_connect_program_async(struct rpc_context *rpc, const char *server, int program, int version, rpc_cb cb, void *private_data)
674 {
675 struct rpc_cb_data *data;
676
677 data = malloc(sizeof(struct rpc_cb_data));
678 if (data == NULL) {
679 return -1;
680 }
681 memset(data, 0, sizeof(struct rpc_cb_data));
682 data->server = strdup(server);
683 data->program = program;
684 data->version = version;
685
686 data->cb = cb;
687 data->private_data = private_data;
688
689 if (rpc_connect_async(rpc, server, 111, rpc_connect_program_1_cb, data) != 0) {
690 rpc_set_error(rpc, "Failed to start connection");
691 free_rpc_cb_data(data);
692 return -1;
693 }
694 return 0;
695 }
696
697 static void free_nfs_cb_data(struct nfs_cb_data *data)
698 {
699 if (data->continue_data != NULL) {
700 assert(data->free_continue_data);
701 data->free_continue_data(data->continue_data);
702 }
703
704 free(data->saved_path);
705 free(data->fh.data.data_val);
706 free(data->buffer);
707
708 free(data);
709 }
710
711 static void free_nfsfh(struct nfsfh *nfsfh)
712 {
713 if (nfsfh->fh.data.data_val != NULL) {
714 free(nfsfh->fh.data.data_val);
715 nfsfh->fh.data.data_val = NULL;
716 }
717 free(nfsfh->ra.buf);
718 free(nfsfh);
719 }
720
721
722 static void nfs_mount_10_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
723 {
724 struct nfs_cb_data *data = private_data;
725 struct nfs_context *nfs = data->nfs;
726
727 assert(rpc->magic == RPC_CONTEXT_MAGIC);
728
729 if (status == RPC_STATUS_ERROR) {
730 data->cb(-EFAULT, nfs, command_data, data->private_data);
731 free_nfs_cb_data(data);
732 return;
733 }
734 if (status == RPC_STATUS_CANCEL) {
735 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
736 free_nfs_cb_data(data);
737 return;
738 }
739
740 data->cb(0, nfs, NULL, data->private_data);
741 free_nfs_cb_data(data);
742 }
743
744 static void nfs_mount_9_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
745 {
746 struct nfs_cb_data *data = private_data;
747 struct nfs_context *nfs = data->nfs;
748 FSINFO3res *res = command_data;
749 struct GETATTR3args args;
750
751 assert(rpc->magic == RPC_CONTEXT_MAGIC);
752
753 if (status == RPC_STATUS_ERROR) {
754 data->cb(-EFAULT, nfs, command_data, data->private_data);
755 free_nfs_cb_data(data);
756 return;
757 }
758 if (status == RPC_STATUS_CANCEL) {
759 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
760 free_nfs_cb_data(data);
761 return;
762 }
763
764 nfs->readmax = res->FSINFO3res_u.resok.rtmax;
765 nfs->writemax = res->FSINFO3res_u.resok.wtmax;
766
767 memset(&args, 0, sizeof(GETATTR3args));
768 args.object = nfs->rootfh;
769
770 if (rpc_nfs3_getattr_async(rpc, nfs_mount_10_cb, &args, data) != 0) {
771 data->cb(-ENOMEM, nfs, command_data, data->private_data);
772 free_nfs_cb_data(data);
773 return;
774 }
775 }
776
777 static void nfs_mount_8_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
778 {
779 struct nfs_cb_data *data = private_data;
780 struct nfs_context *nfs = data->nfs;
781 struct FSINFO3args args;
782
783 assert(rpc->magic == RPC_CONTEXT_MAGIC);
784
785 if (status == RPC_STATUS_ERROR) {
786 data->cb(-EFAULT, nfs, command_data, data->private_data);
787 free_nfs_cb_data(data);
788 return;
789 }
790 if (status == RPC_STATUS_CANCEL) {
791 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
792 free_nfs_cb_data(data);
793 return;
794 }
795
796 /* NFS TCP connections we want to autoreconnect after sessions are torn down (due to inactivity or error) */
797 rpc_set_autoreconnect(rpc);
798
799 args.fsroot = nfs->rootfh;
800 if (rpc_nfs3_fsinfo_async(rpc, nfs_mount_9_cb, &args, data) != 0) {
801 data->cb(-ENOMEM, nfs, command_data, data->private_data);
802 free_nfs_cb_data(data);
803 return;
804 }
805 }
806
807 static void nfs_mount_6_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
808 {
809 struct nfs_cb_data *data = private_data;
810 struct nfs_context *nfs = data->nfs;
811 mountres3 *res;
812
813 assert(rpc->magic == RPC_CONTEXT_MAGIC);
814
815 if (status == RPC_STATUS_ERROR) {
816 data->cb(-EFAULT, nfs, command_data, data->private_data);
817 free_nfs_cb_data(data);
818 return;
819 }
820 if (status == RPC_STATUS_CANCEL) {
821 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
822 free_nfs_cb_data(data);
823 return;
824 }
825
826 res = command_data;
827 if (res->fhs_status != MNT3_OK) {
828 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));
829 data->cb(mountstat3_to_errno(res->fhs_status), nfs, rpc_get_error(rpc), data->private_data);
830 free_nfs_cb_data(data);
831 return;
832 }
833
834 nfs->rootfh.data.data_len = res->mountres3_u.mountinfo.fhandle.fhandle3_len;
835 nfs->rootfh.data.data_val = malloc(nfs->rootfh.data.data_len);
836 if (nfs->rootfh.data.data_val == NULL) {
837 rpc_set_error(rpc, "Out of memory. Could not allocate memory to store root filehandle");
838 data->cb(-ENOMEM, nfs, rpc_get_error(rpc), data->private_data);
839 free_nfs_cb_data(data);
840 return;
841 }
842 memcpy(nfs->rootfh.data.data_val, res->mountres3_u.mountinfo.fhandle.fhandle3_val, nfs->rootfh.data.data_len);
843
844 rpc_disconnect(rpc, "normal disconnect");
845
846 if (rpc_connect_program_async(nfs->rpc, nfs->server, NFS_PROGRAM, NFS_V3, nfs_mount_8_cb, data) != 0) {
847 data->cb(-ENOMEM, nfs, command_data, data->private_data);
848 free_nfs_cb_data(data);
849 return;
850 }
851 }
852
853
854 static void nfs_mount_5_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
855 {
856 struct nfs_cb_data *data = private_data;
857 struct nfs_context *nfs = data->nfs;
858
859 assert(rpc->magic == RPC_CONTEXT_MAGIC);
860
861 if (status == RPC_STATUS_ERROR) {
862 data->cb(-EFAULT, nfs, command_data, data->private_data);
863 free_nfs_cb_data(data);
864 return;
865 }
866 if (status == RPC_STATUS_CANCEL) {
867 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
868 free_nfs_cb_data(data);
869 return;
870 }
871
872 if (rpc_mount3_mnt_async(rpc, nfs_mount_6_cb, nfs->export, data) != 0) {
873 data->cb(-ENOMEM, nfs, command_data, data->private_data);
874 free_nfs_cb_data(data);
875 return;
876 }
877 }
878
879 /*
880 * Async call for mounting an nfs share and geting the root filehandle
881 */
882 int nfs_mount_async(struct nfs_context *nfs, const char *server, const char *export, nfs_cb cb, void *private_data)
883 {
884 struct nfs_cb_data *data;
885 char *new_server, *new_export;
886
887 data = malloc(sizeof(struct nfs_cb_data));
888 if (data == NULL) {
889 rpc_set_error(nfs->rpc, "out of memory. failed to allocate memory for nfs mount data");
890 return -1;
891 }
892 memset(data, 0, sizeof(struct nfs_cb_data));
893 new_server = strdup(server);
894 new_export = strdup(export);
895 if (nfs->server != NULL) {
896 free(nfs->server);
897 }
898 nfs->server = new_server;
899 if (nfs->export != NULL) {
900 free(nfs->export);
901 }
902 nfs->export = new_export;
903 data->nfs = nfs;
904 data->cb = cb;
905 data->private_data = private_data;
906
907 if (rpc_connect_program_async(nfs->rpc, server, MOUNT_PROGRAM, MOUNT_V3, nfs_mount_5_cb, data) != 0) {
908 rpc_set_error(nfs->rpc, "Failed to start connection");
909 free_nfs_cb_data(data);
910 return -1;
911 }
912
913 return 0;
914 }
915
916
917
918 /*
919 * Functions to first look up a path, component by component, and then finally call a specific function once
920 * the filehandle for the final component is found.
921 */
922 static void nfs_lookup_path_2_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
923 {
924 struct nfs_cb_data *data = private_data;
925 struct nfs_context *nfs = data->nfs;
926 READLINK3res *res;
927 char *path, *newpath;
928
929 assert(rpc->magic == RPC_CONTEXT_MAGIC);
930
931 if (status == RPC_STATUS_ERROR) {
932 data->cb(-EFAULT, nfs, command_data, data->private_data);
933 free_nfs_cb_data(data);
934 return;
935 }
936 if (status == RPC_STATUS_CANCEL) {
937 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
938 free_nfs_cb_data(data);
939 return;
940 }
941
942 res = command_data;
943 if (res->status != NFS3_OK) {
944 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));
945 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
946 free_nfs_cb_data(data);
947 return;
948 }
949
950 path = res->READLINK3res_u.resok.data;
951
952 /* Handle absolute paths, ensuring that the path lies within the
953 * export. */
954 if (path[0] == '/') {
955 if (strstr(path, nfs->export) == path) {
956 char *ptr = path + strlen(nfs->export);
957 if (*ptr == '/') {
958 newpath = strdup(ptr);
959 } else if (*ptr == '\0') {
960 newpath = strdup("/");
961 } else {
962 data->cb(-ENOENT, nfs, "Symbolic link points outside export", data->private_data);
963 free_nfs_cb_data(data);
964 return;
965 }
966 } else {
967 data->cb(-ENOENT, nfs, "Symbolic link points outside export", data->private_data);
968 free_nfs_cb_data(data);
969 return;
970 }
971
972 if (!newpath)
973 goto nomem;
974 } else {
975 /* Handle relative paths, both the case where the current
976 * component is an intermediate component and when it is the
977 * final component. */
978 if (data->path[0]) {
979 /* Since path points to a component and saved_path
980 * always starts with '/', path[-1] is valid. */
981 data->path[-1] = '\0';
982 newpath = malloc(strlen(data->saved_path) + strlen(path) + strlen(data->path) + 6);
983 if (!newpath)
984 goto nomem;
985
986 sprintf(newpath, "%s/../%s/%s", data->saved_path, path, data->path);
987 } else {
988 newpath = malloc(strlen(data->saved_path) + strlen(path) + 5);
989 if (!newpath)
990 goto nomem;
991
992 sprintf(newpath, "%s/../%s", data->saved_path, path);
993 }
994 }
995 free(data->saved_path);
996 data->saved_path = newpath;
997
998 if (nfs_normalize_path(nfs, data->saved_path) != 0) {
999 data->cb(-ENOENT, nfs, "Symbolic link resolves to invalid path", data->private_data);
1000 free_nfs_cb_data(data);
1001 return;
1002 }
1003
1004 data->path = data->saved_path;
1005 nfs_lookup_path_async_internal(nfs, NULL, data, &nfs->rootfh);
1006 return;
1007
1008 nomem:
1009 data->cb(-ENOMEM, nfs, "Failed to allocate memory for path", data->private_data);
1010 free_nfs_cb_data(data);
1011 }
1012
1013 static void nfs_lookup_path_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1014 {
1015 struct nfs_cb_data *data = private_data;
1016 struct nfs_context *nfs = data->nfs;
1017 LOOKUP3res *res;
1018 fattr3 *attr;
1019
1020 assert(rpc->magic == RPC_CONTEXT_MAGIC);
1021
1022 if (status == RPC_STATUS_ERROR) {
1023 data->cb(-EFAULT, nfs, command_data, data->private_data);
1024 free_nfs_cb_data(data);
1025 return;
1026 }
1027 if (status == RPC_STATUS_CANCEL) {
1028 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1029 free_nfs_cb_data(data);
1030 return;
1031 }
1032
1033 res = command_data;
1034 if (res->status != NFS3_OK) {
1035 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));
1036 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1037 free_nfs_cb_data(data);
1038 return;
1039 }
1040
1041 attr = res->LOOKUP3res_u.resok.obj_attributes.attributes_follow ?
1042 &res->LOOKUP3res_u.resok.obj_attributes.post_op_attr_u.attributes :
1043 NULL;
1044
1045 /* This function will always invoke the callback and cleanup
1046 * for failures. So no need to check the return value.
1047 */
1048 nfs_lookup_path_async_internal(nfs, attr, data, &res->LOOKUP3res_u.resok.object);
1049 }
1050
1051 static int nfs_lookup_path_async_internal(struct nfs_context *nfs, fattr3 *attr, struct nfs_cb_data *data, struct nfs_fh3 *fh)
1052 {
1053 char *path, *slash;
1054 LOOKUP3args args;
1055
1056 while (*data->path == '/') {
1057 data->path++;
1058 }
1059
1060 path = data->path;
1061 slash = strchr(path, '/');
1062
1063 if (attr && attr->type == NF3LNK && (!data->no_follow || *path != '\0')) {
1064 READLINK3args args;
1065
1066 if (data->link_count++ >= MAX_LINK_COUNT) {
1067 data->cb(-ELOOP, nfs, "Too many levels of symbolic links", data->private_data);
1068 free_nfs_cb_data(data);
1069 return -1;
1070 }
1071
1072 args.symlink = *fh;
1073
1074 if (rpc_nfs3_readlink_async(nfs->rpc, nfs_lookup_path_2_cb, &args, data) != 0) {
1075 rpc_set_error(nfs->rpc, "RPC error: Failed to send READLINK call for %s", data->path);
1076 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1077 free_nfs_cb_data(data);
1078 return -1;
1079 }
1080
1081 if (slash != NULL) {
1082 *slash = '/';
1083 }
1084 return 0;
1085 }
1086
1087 if (slash != NULL) {
1088 /* Clear slash so that path is a zero terminated string for
1089 * the current path component. Set it back to '/' again later
1090 * when we are finished referencing this component so that
1091 * data->saved_path will still point to the full
1092 * normalized path.
1093 */
1094 *slash = 0;
1095 data->path = slash+1;
1096 } else {
1097 while (*data->path != 0) {
1098 data->path++;
1099 }
1100 }
1101
1102 if (*path == 0) {
1103 data->fh.data.data_len = fh->data.data_len;
1104 data->fh.data.data_val = malloc(data->fh.data.data_len);
1105 if (data->fh.data.data_val == NULL) {
1106 rpc_set_error(nfs->rpc, "Out of memory: Failed to allocate fh for %s", data->path);
1107 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1108 free_nfs_cb_data(data);
1109 return -1;
1110 }
1111 memcpy(data->fh.data.data_val, fh->data.data_val, data->fh.data.data_len);
1112 if (slash != NULL) {
1113 *slash = '/';
1114 }
1115 data->continue_cb(nfs, attr, data);
1116 return 0;
1117 }
1118
1119 memset(&args, 0, sizeof(LOOKUP3args));
1120 args.what.dir = *fh;
1121 args.what.name = path;
1122
1123 if (rpc_nfs3_lookup_async(nfs->rpc, nfs_lookup_path_1_cb, &args, data) != 0) {
1124 rpc_set_error(nfs->rpc, "RPC error: Failed to send lookup call for %s", data->path);
1125 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1126 free_nfs_cb_data(data);
1127 return -1;
1128 }
1129 if (slash != NULL) {
1130 *slash = '/';
1131 }
1132 return 0;
1133 }
1134
1135 static int nfs_normalize_path(struct nfs_context *nfs, char *path)
1136 {
1137 char *str;
1138 int len;
1139
1140 /* // -> / */
1141 while ((str = strstr(path, "//"))) {
1142 while(*str) {
1143 *str = *(str + 1);
1144 str++;
1145 }
1146 }
1147
1148 /* /./ -> / */
1149 while ((str = strstr(path, "/./"))) {
1150 while(*(str + 1)) {
1151 *str = *(str + 2);
1152 str++;
1153 }
1154 }
1155
1156 /* ^/../ -> error */
1157 if (!strncmp(path, "/../", 4)) {
1158 rpc_set_error(nfs->rpc,
1159 "Absolute path starts with '/../' "
1160 "during normalization");
1161 return -1;
1162 }
1163
1164 /* ^[^/] -> error */
1165 if (path[0] != '/') {
1166 rpc_set_error(nfs->rpc,
1167 "Absolute path does not start with '/'");
1168 return -1;
1169 }
1170
1171 /* /string/../ -> / */
1172 while ((str = strstr(path, "/../"))) {
1173 char *tmp;
1174
1175 if (!strncmp(path, "/../", 4)) {
1176 rpc_set_error(nfs->rpc,
1177 "Absolute path starts with '/../' "
1178 "during normalization");
1179 return -1;
1180 }
1181
1182 tmp = str - 1;
1183 while (*tmp != '/') {
1184 tmp--;
1185 }
1186 str += 3;
1187 while((*(tmp++) = *(str++)) != '\0')
1188 ;
1189 }
1190
1191 /* /$ -> \0 */
1192 len = strlen(path);
1193 if (len > 1) {
1194 if (path[len - 1] == '/') {
1195 path[len - 1] = '\0';
1196 len--;
1197 }
1198 }
1199 if (path[0] == '\0') {
1200 rpc_set_error(nfs->rpc,
1201 "Absolute path became '' "
1202 "during normalization");
1203 return -1;
1204 }
1205
1206 /* /.$ -> \0 */
1207 if (len >= 2) {
1208 if (!strcmp(&path[len - 2], "/.")) {
1209 path[len - 2] = '\0';
1210 len -= 2;
1211 }
1212 }
1213
1214 /* ^/..$ -> error */
1215 if (!strcmp(path, "/..")) {
1216 rpc_set_error(nfs->rpc,
1217 "Absolute path is '/..' "
1218 "during normalization");
1219 return -1;
1220 }
1221
1222 /* /string/..$ -> / */
1223 if (len >= 3) {
1224 if (!strcmp(&path[len - 3], "/..")) {
1225 char *tmp = &path[len - 3];
1226 while (*--tmp != '/')
1227 ;
1228 *tmp = '\0';
1229 }
1230 }
1231
1232 return 0;
1233 }
1234
1235 static void nfs_lookup_path_getattr_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1236 {
1237 struct nfs_cb_data *data = private_data;
1238 struct nfs_context *nfs = data->nfs;
1239 GETATTR3res *res;
1240 fattr3 *attr;
1241
1242 assert(rpc->magic == RPC_CONTEXT_MAGIC);
1243
1244 if (status == RPC_STATUS_ERROR) {
1245 data->cb(-EFAULT, nfs, command_data, data->private_data);
1246 free_nfs_cb_data(data);
1247 return;
1248 }
1249 if (status == RPC_STATUS_CANCEL) {
1250 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1251 free_nfs_cb_data(data);
1252 return;
1253 }
1254
1255 res = command_data;
1256 if (res->status != NFS3_OK) {
1257 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));
1258 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1259 free_nfs_cb_data(data);
1260 return;
1261 }
1262
1263 attr = &res->GETATTR3res_u.resok.obj_attributes;
1264 /* This function will always invoke the callback and cleanup
1265 * for failures. So no need to check the return value.
1266 */
1267 nfs_lookup_path_async_internal(nfs, attr, data, &nfs->rootfh);
1268 }
1269
1270 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)
1271 {
1272 struct nfs_cb_data *data;
1273 struct GETATTR3args args;
1274
1275 if (path[0] == '\0') {
1276 path = ".";
1277 }
1278
1279 data = malloc(sizeof(struct nfs_cb_data));
1280 if (data == NULL) {
1281 rpc_set_error(nfs->rpc, "out of memory: failed to allocate "
1282 "nfs_cb_data structure");
1283 if (free_continue_data)
1284 free_continue_data(continue_data);
1285 return -1;
1286 }
1287 memset(data, 0, sizeof(struct nfs_cb_data));
1288 data->nfs = nfs;
1289 data->cb = cb;
1290 data->continue_cb = continue_cb;
1291 data->continue_data = continue_data;
1292 data->free_continue_data = free_continue_data;
1293 data->continue_int = continue_int;
1294 data->private_data = private_data;
1295 data->no_follow = no_follow;
1296 if (path[0] == '/') {
1297 data->saved_path = strdup(path);
1298 } else {
1299 data->saved_path = malloc(strlen(path) + strlen(nfs->cwd) + 2);
1300 if (data->saved_path == NULL) {
1301 rpc_set_error(nfs->rpc, "out of memory: failed to "
1302 "malloc path string");
1303 free_nfs_cb_data(data);
1304 return -1;
1305 }
1306 sprintf(data->saved_path, "%s/%s", nfs->cwd, path);
1307 }
1308
1309 if (data->saved_path == NULL) {
1310 rpc_set_error(nfs->rpc, "out of memory: failed to copy path string");
1311 free_nfs_cb_data(data);
1312 return -1;
1313 }
1314 if (nfs_normalize_path(nfs, data->saved_path) != 0) {
1315 free_nfs_cb_data(data);
1316 return -1;
1317 }
1318
1319 data->path = data->saved_path;
1320 if (data->path[0]) {
1321 /* This function will always invoke the callback and cleanup
1322 * for failures. So no need to check the return value.
1323 */
1324 nfs_lookup_path_async_internal(nfs, NULL, data, &nfs->rootfh);
1325 return 0;
1326 }
1327
1328 /* We have a request for "", so just perform a GETATTR3 so we can
1329 * return the attributes to the caller.
1330 */
1331 memset(&args, 0, sizeof(GETATTR3args));
1332 args.object = nfs->rootfh;
1333 if (rpc_nfs3_getattr_async(nfs->rpc, nfs_lookup_path_getattr_cb, &args, data) != 0) {
1334 free_nfs_cb_data(data);
1335 return -1;
1336 }
1337 return 0;
1338 }
1339
1340
1341 /*
1342 * Async stat()
1343 */
1344 static dev_t specdata3_to_rdev(struct specdata3 *rdev)
1345 {
1346 #ifdef makedev
1347 return makedev(rdev->specdata1, rdev->specdata2);
1348 #else
1349 return 0;
1350 #endif
1351 }
1352
1353 static void nfs_stat_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1354 {
1355 GETATTR3res *res;
1356 struct nfs_cb_data *data = private_data;
1357 struct nfs_context *nfs = data->nfs;
1358 #ifdef WIN32
1359 struct __stat64 st;
1360 #else
1361 struct stat st;
1362 #endif
1363
1364 assert(rpc->magic == RPC_CONTEXT_MAGIC);
1365
1366 if (status == RPC_STATUS_ERROR) {
1367 data->cb(-EFAULT, nfs, command_data, data->private_data);
1368 free_nfs_cb_data(data);
1369 return;
1370 }
1371 if (status == RPC_STATUS_CANCEL) {
1372 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1373 free_nfs_cb_data(data);
1374 return;
1375 }
1376
1377 res = command_data;
1378 if (res->status != NFS3_OK) {
1379 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));
1380 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1381 free_nfs_cb_data(data);
1382 return;
1383 }
1384
1385 st.st_dev = res->GETATTR3res_u.resok.obj_attributes.fsid;
1386 st.st_ino = res->GETATTR3res_u.resok.obj_attributes.fileid;
1387 st.st_mode = res->GETATTR3res_u.resok.obj_attributes.mode;
1388 switch (res->GETATTR3res_u.resok.obj_attributes.type) {
1389 case NF3REG:
1390 st.st_mode |= S_IFREG;
1391 break;
1392 case NF3DIR:
1393 st.st_mode |= S_IFDIR;
1394 break;
1395 case NF3BLK:
1396 st.st_mode |= S_IFBLK;
1397 break;
1398 case NF3CHR:
1399 st.st_mode |= S_IFCHR;
1400 break;
1401 case NF3LNK:
1402 st.st_mode |= S_IFLNK;
1403 break;
1404 case NF3SOCK:
1405 st.st_mode |= S_IFSOCK;
1406 break;
1407 case NF3FIFO:
1408 st.st_mode |= S_IFIFO;
1409 break;
1410 }
1411 st.st_nlink = res->GETATTR3res_u.resok.obj_attributes.nlink;
1412 st.st_uid = res->GETATTR3res_u.resok.obj_attributes.uid;
1413 st.st_gid = res->GETATTR3res_u.resok.obj_attributes.gid;
1414 st.st_rdev = specdata3_to_rdev(&res->GETATTR3res_u.resok.obj_attributes.rdev);
1415 st.st_size = res->GETATTR3res_u.resok.obj_attributes.size;
1416 #ifndef WIN32
1417 st.st_blksize = NFS_BLKSIZE;
1418 st.st_blocks = (res->GETATTR3res_u.resok.obj_attributes.used + 512 - 1) / 512;
1419 #endif//WIN32
1420 st.st_atime = res->GETATTR3res_u.resok.obj_attributes.atime.seconds;
1421 st.st_mtime = res->GETATTR3res_u.resok.obj_attributes.mtime.seconds;
1422 st.st_ctime = res->GETATTR3res_u.resok.obj_attributes.ctime.seconds;
1423 #ifdef HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
1424 st.st_atim.tv_nsec = res->GETATTR3res_u.resok.obj_attributes.atime.nseconds;
1425 st.st_mtim.tv_nsec = res->GETATTR3res_u.resok.obj_attributes.mtime.nseconds;
1426 st.st_ctim.tv_nsec = res->GETATTR3res_u.resok.obj_attributes.ctime.nseconds;
1427 #endif
1428
1429 data->cb(0, nfs, &st, data->private_data);
1430 free_nfs_cb_data(data);
1431 }
1432
1433 static int nfs_stat_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
1434 {
1435 struct GETATTR3args args;
1436
1437 memset(&args, 0, sizeof(GETATTR3args));
1438 args.object = data->fh;
1439
1440 if (rpc_nfs3_getattr_async(nfs->rpc, nfs_stat_1_cb, &args, data) != 0) {
1441 rpc_set_error(nfs->rpc, "RPC error: Failed to send STAT GETATTR call for %s", data->path);
1442 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1443 free_nfs_cb_data(data);
1444 return -1;
1445 }
1446 return 0;
1447 }
1448
1449 int nfs_stat_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
1450 {
1451 if (nfs_lookuppath_async(nfs, path, 0, cb, private_data, nfs_stat_continue_internal, NULL, NULL, 0) != 0) {
1452 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
1453 return -1;
1454 }
1455
1456 return 0;
1457 }
1458
1459
1460 /*
1461 * Async nfs_stat64()
1462 */
1463 static void nfs_stat64_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1464 {
1465 GETATTR3res *res;
1466 struct nfs_cb_data *data = private_data;
1467 struct nfs_context *nfs = data->nfs;
1468 struct nfs_stat_64 st;
1469
1470 assert(rpc->magic == RPC_CONTEXT_MAGIC);
1471
1472 if (status == RPC_STATUS_ERROR) {
1473 data->cb(-EFAULT, nfs, command_data, data->private_data);
1474 free_nfs_cb_data(data);
1475 return;
1476 }
1477 if (status == RPC_STATUS_CANCEL) {
1478 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1479 free_nfs_cb_data(data);
1480 return;
1481 }
1482
1483 res = command_data;
1484 if (res->status != NFS3_OK) {
1485 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));
1486 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1487 free_nfs_cb_data(data);
1488 return;
1489 }
1490
1491 st.nfs_dev = res->GETATTR3res_u.resok.obj_attributes.fsid;
1492 st.nfs_ino = res->GETATTR3res_u.resok.obj_attributes.fileid;
1493 st.nfs_mode = res->GETATTR3res_u.resok.obj_attributes.mode;
1494 switch (res->GETATTR3res_u.resok.obj_attributes.type) {
1495 case NF3REG:
1496 st.nfs_mode |= S_IFREG;
1497 break;
1498 case NF3DIR:
1499 st.nfs_mode |= S_IFDIR;
1500 break;
1501 case NF3BLK:
1502 st.nfs_mode |= S_IFBLK;
1503 break;
1504 case NF3CHR:
1505 st.nfs_mode |= S_IFCHR;
1506 break;
1507 case NF3LNK:
1508 st.nfs_mode |= S_IFLNK;
1509 break;
1510 case NF3SOCK:
1511 st.nfs_mode |= S_IFSOCK;
1512 break;
1513 case NF3FIFO:
1514 st.nfs_mode |= S_IFIFO;
1515 break;
1516 }
1517 st.nfs_nlink = res->GETATTR3res_u.resok.obj_attributes.nlink;
1518 st.nfs_uid = res->GETATTR3res_u.resok.obj_attributes.uid;
1519 st.nfs_gid = res->GETATTR3res_u.resok.obj_attributes.gid;
1520 st.nfs_rdev = specdata3_to_rdev(&res->GETATTR3res_u.resok.obj_attributes.rdev);
1521 st.nfs_size = res->GETATTR3res_u.resok.obj_attributes.size;
1522 st.nfs_blksize = NFS_BLKSIZE;
1523 st.nfs_blocks = (res->GETATTR3res_u.resok.obj_attributes.used + 512 - 1) / 512;
1524 st.nfs_atime = res->GETATTR3res_u.resok.obj_attributes.atime.seconds;
1525 st.nfs_mtime = res->GETATTR3res_u.resok.obj_attributes.mtime.seconds;
1526 st.nfs_ctime = res->GETATTR3res_u.resok.obj_attributes.ctime.seconds;
1527 st.nfs_atime_nsec = res->GETATTR3res_u.resok.obj_attributes.atime.nseconds;
1528 st.nfs_mtime_nsec = res->GETATTR3res_u.resok.obj_attributes.mtime.nseconds;
1529 st.nfs_ctime_nsec = res->GETATTR3res_u.resok.obj_attributes.ctime.nseconds;
1530 st.nfs_used = res->GETATTR3res_u.resok.obj_attributes.used;
1531
1532 data->cb(0, nfs, &st, data->private_data);
1533 free_nfs_cb_data(data);
1534 }
1535
1536 static int nfs_stat64_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
1537 {
1538 struct GETATTR3args args;
1539
1540 memset(&args, 0, sizeof(GETATTR3args));
1541 args.object = data->fh;
1542
1543 if (rpc_nfs3_getattr_async(nfs->rpc, nfs_stat64_1_cb, &args, data) != 0) {
1544 rpc_set_error(nfs->rpc, "RPC error: Failed to send STAT GETATTR call for %s", data->path);
1545 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1546 free_nfs_cb_data(data);
1547 return -1;
1548 }
1549 return 0;
1550 }
1551
1552 int nfs_stat64_async_internal(struct nfs_context *nfs, const char *path, int no_follow, nfs_cb cb, void *private_data)
1553 {
1554 if (nfs_lookuppath_async(nfs, path, no_follow, cb, private_data, nfs_stat64_continue_internal, NULL, NULL, 0) != 0) {
1555 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
1556 return -1;
1557 }
1558
1559 return 0;
1560 }
1561
1562 int nfs_stat64_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
1563 {
1564 return nfs_stat64_async_internal(nfs, path, 0, cb, private_data);
1565 }
1566
1567 int nfs_lstat64_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
1568 {
1569 return nfs_stat64_async_internal(nfs, path, 1, cb, private_data);
1570 }
1571
1572 /*
1573 * Async open()
1574 */
1575 static void nfs_open_trunc_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1576 {
1577 struct nfs_cb_data *data = private_data;
1578 struct nfs_context *nfs = data->nfs;
1579 struct nfsfh *nfsfh;
1580 SETATTR3res *res;
1581
1582 assert(rpc->magic == RPC_CONTEXT_MAGIC);
1583
1584 if (status == RPC_STATUS_ERROR) {
1585 data->cb(-EFAULT, nfs, command_data, data->private_data);
1586 free_nfs_cb_data(data);
1587 return;
1588 }
1589 if (status == RPC_STATUS_CANCEL) {
1590 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1591 free_nfs_cb_data(data);
1592 return;
1593 }
1594
1595 res = command_data;
1596 if (res->status != NFS3_OK) {
1597 rpc_set_error(nfs->rpc, "NFS: Setattr failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1598 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1599 free_nfs_cb_data(data);
1600 return;
1601 }
1602
1603 nfsfh = malloc(sizeof(struct nfsfh));
1604 if (nfsfh == NULL) {
1605 rpc_set_error(nfs->rpc, "NFS: Failed to allocate nfsfh structure");
1606 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1607 free_nfs_cb_data(data);
1608 return;
1609 }
1610 memset(nfsfh, 0, sizeof(struct nfsfh));
1611
1612 if (data->continue_int & O_SYNC) {
1613 nfsfh->is_sync = 1;
1614 }
1615 if (data->continue_int & O_APPEND) {
1616 nfsfh->is_append = 1;
1617 }
1618
1619 /* steal the filehandle */
1620 nfsfh->fh = data->fh;
1621 data->fh.data.data_val = NULL;
1622
1623 data->cb(0, nfs, nfsfh, data->private_data);
1624 free_nfs_cb_data(data);
1625 }
1626
1627 static void nfs_open_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1628 {
1629 ACCESS3res *res;
1630 struct nfs_cb_data *data = private_data;
1631 struct nfs_context *nfs = data->nfs;
1632 struct nfsfh *nfsfh;
1633 unsigned int nfsmode = 0;
1634
1635 assert(rpc->magic == RPC_CONTEXT_MAGIC);
1636
1637 if (status == RPC_STATUS_ERROR) {
1638 data->cb(-EFAULT, nfs, command_data, data->private_data);
1639 free_nfs_cb_data(data);
1640 return;
1641 }
1642 if (status == RPC_STATUS_CANCEL) {
1643 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1644 free_nfs_cb_data(data);
1645 return;
1646 }
1647
1648 res = command_data;
1649 if (res->status != NFS3_OK) {
1650 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));
1651 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
1652 free_nfs_cb_data(data);
1653 return;
1654 }
1655
1656 if (data->continue_int & O_WRONLY) {
1657 nfsmode |= ACCESS3_MODIFY;
1658 }
1659 if (data->continue_int & O_RDWR) {
1660 nfsmode |= ACCESS3_READ|ACCESS3_MODIFY;
1661 }
1662 if (!(data->continue_int & (O_WRONLY|O_RDWR))) {
1663 nfsmode |= ACCESS3_READ;
1664 }
1665
1666
1667 if (res->ACCESS3res_u.resok.access != nfsmode) {
1668 rpc_set_error(nfs->rpc, "NFS: ACCESS denied. Required access %c%c%c. Allowed access %c%c%c",
1669 nfsmode&ACCESS3_READ?'r':'-',
1670 nfsmode&ACCESS3_MODIFY?'w':'-',
1671 nfsmode&ACCESS3_EXECUTE?'x':'-',
1672 res->ACCESS3res_u.resok.access&ACCESS3_READ?'r':'-',
1673 res->ACCESS3res_u.resok.access&ACCESS3_MODIFY?'w':'-',
1674 res->ACCESS3res_u.resok.access&ACCESS3_EXECUTE?'x':'-');
1675 data->cb(-EACCES, nfs, rpc_get_error(nfs->rpc), data->private_data);
1676 free_nfs_cb_data(data);
1677 return;
1678 }
1679
1680 /* Try to truncate it if we were requested to */
1681 if ((data->continue_int & O_TRUNC) &&
1682 (data->continue_int & (O_RDWR|O_WRONLY))) {
1683 SETATTR3args args;
1684
1685 memset(&args, 0, sizeof(SETATTR3args));
1686 args.object = data->fh;
1687 args.new_attributes.size.set_it = 1;
1688 args.new_attributes.size.set_size3_u.size = 0;
1689
1690 if (rpc_nfs3_setattr_async(nfs->rpc, nfs_open_trunc_cb, &args,
1691 data) != 0) {
1692 rpc_set_error(nfs->rpc, "RPC error: Failed to send "
1693 "SETATTR call for %s", data->path);
1694 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc),
1695 data->private_data);
1696 free_nfs_cb_data(data);
1697 return;
1698 }
1699 return;
1700 }
1701
1702 nfsfh = malloc(sizeof(struct nfsfh));
1703 if (nfsfh == NULL) {
1704 rpc_set_error(nfs->rpc, "NFS: Failed to allocate nfsfh structure");
1705 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
1706 free_nfs_cb_data(data);
1707 return;
1708 }
1709 memset(nfsfh, 0, sizeof(struct nfsfh));
1710
1711 if (data->continue_int & O_SYNC) {
1712 nfsfh->is_sync = 1;
1713 }
1714 if (data->continue_int & O_APPEND) {
1715 nfsfh->is_append = 1;
1716 }
1717
1718 /* steal the filehandle */
1719 nfsfh->fh = data->fh;
1720 data->fh.data.data_val = NULL;
1721
1722 data->cb(0, nfs, nfsfh, data->private_data);
1723 free_nfs_cb_data(data);
1724 }
1725
1726 static int nfs_open_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
1727 {
1728 int nfsmode = 0;
1729 ACCESS3args args;
1730
1731 if (data->continue_int & O_WRONLY) {
1732 nfsmode |= ACCESS3_MODIFY;
1733 }
1734 if (data->continue_int & O_RDWR) {
1735 nfsmode |= ACCESS3_READ|ACCESS3_MODIFY;
1736 }
1737 if (!(data->continue_int & (O_WRONLY|O_RDWR))) {
1738 nfsmode |= ACCESS3_READ;
1739 }
1740
1741 memset(&args, 0, sizeof(ACCESS3args));
1742 args.object = data->fh;
1743 args.access = nfsmode;
1744
1745 if (rpc_nfs3_access_async(nfs->rpc, nfs_open_cb, &args, data) != 0) {
1746 rpc_set_error(nfs->rpc, "RPC error: Failed to send OPEN ACCESS "
1747 "call for %s", data->path);
1748 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc),
1749 data->private_data);
1750 free_nfs_cb_data(data);
1751 return -1;
1752 }
1753 return 0;
1754 }
1755
1756 int nfs_open_async(struct nfs_context *nfs, const char *path, int flags, nfs_cb cb, void *private_data)
1757 {
1758 if (nfs_lookuppath_async(nfs, path, 0, cb, private_data, nfs_open_continue_internal, NULL, NULL, flags) != 0) {
1759 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
1760 return -1;
1761 }
1762
1763 return 0;
1764 }
1765
1766
1767 /*
1768 * Async chdir()
1769 */
1770 static int nfs_chdir_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
1771 {
1772 /* steal saved_path */
1773 free(nfs->cwd);
1774 nfs->cwd = data->saved_path;
1775 data->saved_path = NULL;
1776
1777 data->cb(0, nfs, NULL, data->private_data);
1778 free_nfs_cb_data(data);
1779
1780 return 0;
1781 }
1782
1783 int nfs_chdir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
1784 {
1785 if (nfs_lookuppath_async(nfs, path, 0, cb, private_data, nfs_chdir_continue_internal, NULL, NULL, 0) != 0) {
1786 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
1787 return -1;
1788 }
1789
1790 return 0;
1791 }
1792
1793
1794 /*
1795 * Async pread()
1796 */
1797 static void nfs_fill_READ3args(READ3args *args, struct nfsfh *fh, uint64_t offset, uint64_t count)
1798 {
1799 memset(args, 0, sizeof(READ3args));
1800 args->file = fh->fh;
1801 args->offset = offset;
1802 args->count = count;
1803 }
1804
1805 static void nfs_pread_mcb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
1806 {
1807 struct nfs_mcb_data *mdata = private_data;
1808 struct nfs_cb_data *data = mdata->data;
1809 struct nfs_context *nfs = data->nfs;
1810 READ3res *res;
1811 int cb_err;
1812 void *cb_data;
1813
1814 assert(rpc->magic == RPC_CONTEXT_MAGIC);
1815
1816 data->num_calls--;
1817
1818 if (status == RPC_STATUS_ERROR) {
1819 /* flag the failure but do not invoke callback until we have received all responses */
1820 data->error = 1;
1821 }
1822 if (status == RPC_STATUS_CANCEL) {
1823 /* flag the cancellation but do not invoke callback until we have received all responses */
1824 data->cancel = 1;
1825 }
1826
1827 if (status == RPC_STATUS_SUCCESS) {
1828 res = command_data;
1829 if (res->status != NFS3_OK) {
1830 rpc_set_error(nfs->rpc, "NFS: Read failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
1831 data->error = 1;
1832 } else {
1833 uint64_t count = res->READ3res_u.resok.count;
1834
1835 if (mdata->update_pos)
1836 data->nfsfh->offset += count;
1837
1838 /* if we have more than one call or we have received a short read we need a reassembly buffer */
1839 if (data->num_calls || (count < mdata->count && !res->READ3res_u.resok.eof)) {
1840 if (data->buffer == NULL) {
1841 data->buffer = malloc(data->count);
1842 if (data->buffer == NULL) {
1843 rpc_set_error(nfs->rpc, "Out-Of-Memory: Failed to allocate reassembly buffer for %d bytes", (int)data->count);
1844 data->oom = 1;
1845 }
1846 }
1847 }
1848 if (count > 0) {
1849 if (count <= mdata->count) {
1850 /* copy data into reassembly buffer if we have one */
1851 if (data->buffer != NULL) {
1852 memcpy(&data->buffer[mdata->offset - data->offset], res->READ3res_u.resok.data.data_val, count);
1853 }
1854 if (data->max_offset < mdata->offset + count) {
1855 data->max_offset = mdata->offset + count;
1856 }
1857 } else {
1858 rpc_set_error(nfs->rpc, "NFS: Read overflow. Server has sent more data than requested!");
1859 data->error = 1;
1860 }
1861 }
1862 /* check if we have received a short read */
1863 if (count < mdata->count && !res->READ3res_u.resok.eof) {
1864 if (count == 0) {
1865 rpc_set_error(nfs->rpc, "NFS: Read failed. No bytes read and not at EOF!");
1866 data->error = 1;
1867 } else {
1868 /* reissue reminder of this read request */
1869 READ3args args;
1870 mdata->offset += count;
1871 mdata->count -= count;
1872 nfs_fill_READ3args(&args, data->nfsfh, mdata->offset, mdata->count);
1873 if (rpc_nfs3_read_async(nfs->rpc, nfs_pread_mcb, &args, mdata) == 0) {
1874 data->num_calls++;
1875 return;
1876 } else {
1877 rpc_set_error(nfs->rpc, "RPC error: Failed to send READ call for %s", data->path);
1878 data->oom = 1;
1879 }
1880 }
1881 }
1882 }
1883 }
1884
1885 free(mdata);
1886
1887 if (data->num_calls > 0) {
1888 /* still waiting for more replies */
1889 return;
1890 }
1891 if (data->oom != 0) {
1892 data->cb(-ENOMEM, nfs, command_data, data->private_data);
1893 free_nfs_cb_data(data);
1894 return;
1895 }
1896 if (data->error != 0) {
1897 data->cb(-EFAULT, nfs, command_data, data->private_data);
1898 free_nfs_cb_data(data);
1899 return;
1900 }
1901 if (data->cancel != 0) {
1902 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
1903 free_nfs_cb_data(data);
1904 return;
1905 }
1906
1907 if (data->buffer) {
1908 if (data->max_offset > data->org_offset + data->org_count) {
1909 data->max_offset = data->org_offset + data->org_count;
1910 }
1911 cb_err = data->max_offset - data->org_offset;
1912 cb_data = data->buffer + (data->org_offset - data->offset);
1913 } else {
1914 cb_err = res->READ3res_u.resok.count;
1915 cb_data = res->READ3res_u.resok.data.data_val;
1916 }
1917
1918 data->nfsfh->ra.fh_offset = data->max_offset;
1919 if (data->nfsfh->ra.cur_ra) {
1920 free(data->nfsfh->ra.buf);
1921 data->nfsfh->ra.buf = data->buffer;
1922 data->nfsfh->ra.buf_offset = data->offset;
1923 data->nfsfh->ra.buf_count = data->count;
1924 data->nfsfh->ra.buf_ts = time(NULL);
1925 data->buffer = NULL;
1926 }
1927
1928 data->cb(cb_err, nfs, cb_data, data->private_data);
1929 free_nfs_cb_data(data);
1930 }
1931
1932 static void nfs_ra_invalidate(struct nfsfh *nfsfh) {
1933 free(nfsfh->ra.buf);
1934 nfsfh->ra.buf = NULL;
1935 nfsfh->ra.buf_offset = 0;
1936 nfsfh->ra.buf_count = 0;
1937 nfsfh->ra.buf_ts = time(NULL);
1938 nfsfh->ra.cur_ra = NFS_BLKSIZE;
1939 }
1940
1941 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)
1942 {
1943 struct nfs_cb_data *data;
1944
1945 data = malloc(sizeof(struct nfs_cb_data));
1946 if (data == NULL) {
1947 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
1948 return -1;
1949 }
1950 memset(data, 0, sizeof(struct nfs_cb_data));
1951 data->nfs = nfs;
1952 data->cb = cb;
1953 data->private_data = private_data;
1954 data->nfsfh = nfsfh;
1955 data->org_offset = offset;
1956 data->org_count = count;
1957
1958 assert(data->num_calls == 0);
1959
1960 if (nfs->rpc->readahead && time(NULL) - nfsfh->ra.buf_ts > NFS_RA_TIMEOUT) {
1961 /* readahead cache timeout */
1962 nfs_ra_invalidate(nfsfh);
1963 }
1964
1965 if (nfs->rpc->readahead) {
1966 if (offset >= nfsfh->ra.last_offset &&
1967 offset - NFS_BLKSIZE <= nfsfh->ra.fh_offset + nfsfh->ra.cur_ra) {
1968 if (nfs->rpc->readahead > nfsfh->ra.cur_ra) {
1969 nfsfh->ra.cur_ra <<= 1;
1970 }
1971 } else {
1972 nfsfh->ra.cur_ra = NFS_BLKSIZE;
1973 }
1974
1975 nfsfh->ra.last_offset = offset;
1976
1977 if (nfsfh->ra.buf_offset <= offset &&
1978 nfsfh->ra.buf_offset + nfsfh->ra.buf_count >= offset + count) {
1979 /* serve request completely from cache */
1980 data->buffer = malloc(count);
1981 if (data->buffer == NULL) {
1982 free_nfs_cb_data(data);
1983 return -ENOMEM;
1984 }
1985 memcpy(data->buffer, nfsfh->ra.buf + (offset - nfsfh->ra.buf_offset), count);
1986 data->cb(count, nfs, data->buffer, data->private_data);
1987 nfsfh->ra.fh_offset = offset + count;
1988 free_nfs_cb_data(data);
1989 return 0;
1990 }
1991
1992 /* align start offset to blocksize */
1993 count += offset & (NFS_BLKSIZE - 1);
1994 offset &= ~(NFS_BLKSIZE - 1);
1995
1996 /* align end offset to blocksize and add readahead */
1997 count += nfsfh->ra.cur_ra - 1;
1998 count &= ~(NFS_BLKSIZE - 1);
1999
2000 data->buffer = malloc(count);
2001 if (data->buffer == NULL) {
2002 free_nfs_cb_data(data);
2003 return -ENOMEM;
2004 }
2005 data->offset = offset;
2006 data->count = count;
2007
2008 if (nfsfh->ra.buf_count && nfsfh->ra.buf_offset <= offset &&
2009 nfsfh->ra.buf_offset + nfsfh->ra.buf_count >= offset) {
2010 /* serve request partially from cache */
2011 size_t overlap = (nfsfh->ra.buf_offset + nfsfh->ra.buf_count) - offset;
2012 if (overlap > count) count = overlap;
2013 memcpy(data->buffer, nfsfh->ra.buf + (offset - nfsfh->ra.buf_offset), overlap);
2014 offset += overlap;
2015 count -= overlap;
2016 }
2017 } else {
2018 data->offset = offset;
2019 data->count = count;
2020 }
2021
2022 data->max_offset = offset;
2023
2024 /* chop requests into chunks of at most READMAX bytes if necessary.
2025 * we send all reads in parallel so that performance is still good.
2026 */
2027 do {
2028 uint64_t readcount = count;
2029 struct nfs_mcb_data *mdata;
2030 READ3args args;
2031
2032 if (readcount > nfs_get_readmax(nfs)) {
2033 readcount = nfs_get_readmax(nfs);
2034 }
2035
2036 mdata = malloc(sizeof(struct nfs_mcb_data));
2037 if (mdata == NULL) {
2038 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_mcb_data structure");
2039 if (data->num_calls == 0) {
2040 free_nfs_cb_data(data);
2041 return -1;
2042 }
2043 data->oom = 1;
2044 break;
2045 }
2046 memset(mdata, 0, sizeof(struct nfs_mcb_data));
2047 mdata->data = data;
2048 mdata->offset = offset;
2049 mdata->count = readcount;
2050 mdata->update_pos = update_pos;
2051
2052 nfs_fill_READ3args(&args, nfsfh, offset, readcount);
2053
2054 if (rpc_nfs3_read_async(nfs->rpc, nfs_pread_mcb, &args, mdata) != 0) {
2055 rpc_set_error(nfs->rpc, "RPC error: Failed to send READ call for %s", data->path);
2056 free(mdata);
2057 if (data->num_calls == 0) {
2058 free_nfs_cb_data(data);
2059 return -1;
2060 }
2061 data->oom = 1;
2062 break;
2063 }
2064
2065 count -= readcount;
2066 offset += readcount;
2067 data->num_calls++;
2068 } while (count > 0);
2069
2070 return 0;
2071 }
2072
2073 int nfs_pread_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t offset, uint64_t count, nfs_cb cb, void *private_data)
2074 {
2075 return nfs_pread_async_internal(nfs, nfsfh, offset, count, cb, private_data, 0);
2076 }
2077
2078 /*
2079 * Async read()
2080 */
2081 int nfs_read_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t count, nfs_cb cb, void *private_data)
2082 {
2083 return nfs_pread_async_internal(nfs, nfsfh, nfsfh->offset, count, cb, private_data, 1);
2084 }
2085
2086
2087
2088 /*
2089 * Async pwrite()
2090 */
2091 static void nfs_fill_WRITE3args (WRITE3args *args, struct nfsfh *fh, uint64_t offset, uint64_t count,
2092 void *buf)
2093 {
2094 memset(args, 0, sizeof(WRITE3args));
2095 args->file = fh->fh;
2096 args->offset = offset;
2097 args->count = count;
2098 args->stable = fh->is_sync ? FILE_SYNC : UNSTABLE;
2099 args->data.data_len = count;
2100 args->data.data_val = buf;
2101 }
2102
2103 static void nfs_pwrite_mcb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2104 {
2105 struct nfs_mcb_data *mdata = private_data;
2106 struct nfs_cb_data *data = mdata->data;
2107 struct nfs_context *nfs = data->nfs;
2108 WRITE3res *res;
2109
2110 assert(rpc->magic == RPC_CONTEXT_MAGIC);
2111
2112 data->num_calls--;
2113
2114 if (status == RPC_STATUS_ERROR) {
2115 /* flag the failure but do not invoke callback until we have received all responses */
2116 data->error = 1;
2117 }
2118 if (status == RPC_STATUS_CANCEL) {
2119 /* flag the cancellation but do not invoke callback until we have received all responses */
2120 data->cancel = 1;
2121 }
2122
2123 if (status == RPC_STATUS_SUCCESS) {
2124 res = command_data;
2125 if (res->status != NFS3_OK) {
2126 rpc_set_error(nfs->rpc, "NFS: Write failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2127 data->error = 1;
2128 } else {
2129 uint64_t count = res->WRITE3res_u.resok.count;
2130
2131 if (mdata->update_pos)
2132 data->nfsfh->offset += count;
2133
2134 if (count < mdata->count) {
2135 if (count == 0) {
2136 rpc_set_error(nfs->rpc, "NFS: Write failed. No bytes written!");
2137 data->error = 1;
2138 } else {
2139 /* reissue reminder of this write request */
2140 WRITE3args args;
2141 mdata->offset += count;
2142 mdata->count -= count;
2143
2144 nfs_fill_WRITE3args(&args, data->nfsfh, mdata->offset, mdata->count,
2145 &data->usrbuf[mdata->offset - data->offset]);
2146 if (rpc_nfs3_write_async(nfs->rpc, nfs_pwrite_mcb, &args, mdata) == 0) {
2147 data->num_calls++;
2148 return;
2149 } else {
2150 rpc_set_error(nfs->rpc, "RPC error: Failed to send WRITE call for %s", data->path);
2151 data->oom = 1;
2152 }
2153 }
2154 }
2155 if (count > 0) {
2156 if (data->max_offset < mdata->offset + count) {
2157 data->max_offset = mdata->offset + count;
2158 }
2159 }
2160 }
2161 }
2162
2163 free(mdata);
2164
2165 if (data->num_calls > 0) {
2166 /* still waiting for more replies */
2167 return;
2168 }
2169 if (data->oom != 0) {
2170 data->cb(-ENOMEM, nfs, command_data, data->private_data);
2171 free_nfs_cb_data(data);
2172 return;
2173 }
2174 if (data->error != 0) {
2175 data->cb(-EFAULT, nfs, command_data, data->private_data);
2176 free_nfs_cb_data(data);
2177 return;
2178 }
2179 if (data->cancel != 0) {
2180 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2181 free_nfs_cb_data(data);
2182 return;
2183 }
2184
2185 data->cb(data->max_offset - data->offset, nfs, NULL, data->private_data);
2186
2187 free_nfs_cb_data(data);
2188 }
2189
2190
2191 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)
2192 {
2193 struct nfs_cb_data *data;
2194
2195 data = malloc(sizeof(struct nfs_cb_data));
2196 if (data == NULL) {
2197 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
2198 return -1;
2199 }
2200 memset(data, 0, sizeof(struct nfs_cb_data));
2201 data->nfs = nfs;
2202 data->cb = cb;
2203 data->private_data = private_data;
2204 data->nfsfh = nfsfh;
2205 data->usrbuf = buf;
2206
2207 /* hello, clang-analyzer */
2208 assert(data->num_calls == 0);
2209
2210 /* chop requests into chunks of at most WRITEMAX bytes if necessary.
2211 * we send all writes in parallel so that performance is still good.
2212 */
2213 data->max_offset = offset;
2214 data->offset = offset;
2215
2216 do {
2217 uint64_t writecount = count;
2218 struct nfs_mcb_data *mdata;
2219 WRITE3args args;
2220
2221 if (writecount > nfs_get_writemax(nfs)) {
2222 writecount = nfs_get_writemax(nfs);
2223 }
2224
2225 mdata = malloc(sizeof(struct nfs_mcb_data));
2226 if (mdata == NULL) {
2227 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_mcb_data structure");
2228 if (data->num_calls == 0) {
2229 free_nfs_cb_data(data);
2230 return -1;
2231 }
2232 data->oom = 1;
2233 break;
2234 }
2235 memset(mdata, 0, sizeof(struct nfs_mcb_data));
2236 mdata->data = data;
2237 mdata->offset = offset;
2238 mdata->count = writecount;
2239 mdata->update_pos = update_pos;
2240
2241 nfs_fill_WRITE3args(&args, nfsfh, offset, writecount, &buf[offset - data->offset]);
2242
2243 if (rpc_nfs3_write_async(nfs->rpc, nfs_pwrite_mcb, &args, mdata) != 0) {
2244 rpc_set_error(nfs->rpc, "RPC error: Failed to send WRITE call for %s", data->path);
2245 free(mdata);
2246 if (data->num_calls == 0) {
2247 free_nfs_cb_data(data);
2248 return -1;
2249 }
2250 data->oom = 1;
2251 break;
2252 }
2253
2254 count -= writecount;
2255 offset += writecount;
2256 data->num_calls++;
2257 } while (count > 0);
2258
2259 return 0;
2260 }
2261
2262 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)
2263 {
2264 return nfs_pwrite_async_internal(nfs, nfsfh, offset, count, buf, cb, private_data, 0);
2265 }
2266
2267 /*
2268 * Async write()
2269 */
2270 static void nfs_write_append_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2271 {
2272 struct nfs_cb_data *data = private_data;
2273 struct nfs_context *nfs = data->nfs;
2274 GETATTR3res *res;
2275
2276 assert(rpc->magic == RPC_CONTEXT_MAGIC);
2277
2278 if (status == RPC_STATUS_ERROR) {
2279 data->cb(-EFAULT, nfs, command_data, data->private_data);
2280 free_nfs_cb_data(data);
2281 return;
2282 }
2283 if (status == RPC_STATUS_CANCEL) {
2284 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2285 free_nfs_cb_data(data);
2286 return;
2287 }
2288
2289 res = command_data;
2290 if (res->status != NFS3_OK) {
2291 rpc_set_error(nfs->rpc, "NFS: GETATTR failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2292 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2293 free_nfs_cb_data(data);
2294 return;
2295 }
2296
2297 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) {
2298 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2299 free_nfs_cb_data(data);
2300 return;
2301 }
2302 free_nfs_cb_data(data);
2303 }
2304
2305 int nfs_write_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t count, char *buf, nfs_cb cb, void *private_data)
2306 {
2307 nfs_ra_invalidate(nfsfh);
2308 if (nfsfh->is_append) {
2309 struct GETATTR3args args;
2310 struct nfs_cb_data *data;
2311
2312 data = malloc(sizeof(struct nfs_cb_data));
2313 if (data == NULL) {
2314 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
2315 return -1;
2316 }
2317 memset(data, 0, sizeof(struct nfs_cb_data));
2318 data->nfs = nfs;
2319 data->cb = cb;
2320 data->private_data = private_data;
2321 data->nfsfh = nfsfh;
2322 data->usrbuf = buf;
2323 data->count = count;
2324
2325 memset(&args, 0, sizeof(GETATTR3args));
2326 args.object = nfsfh->fh;
2327
2328 if (rpc_nfs3_getattr_async(nfs->rpc, nfs_write_append_cb, &args, data) != 0) {
2329 rpc_set_error(nfs->rpc, "out of memory: failed to send GETATTR");
2330 free_nfs_cb_data(data);
2331 return -1;
2332 }
2333 return 0;
2334 }
2335 return nfs_pwrite_async_internal(nfs, nfsfh, nfsfh->offset, count, buf, cb, private_data, 1);
2336 }
2337
2338
2339
2340
2341 /*
2342 * close
2343 */
2344
2345 int nfs_close_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data)
2346 {
2347 free_nfsfh(nfsfh);
2348 cb(0, nfs, NULL, private_data);
2349 return 0;
2350 };
2351
2352
2353
2354
2355
2356 /*
2357 * Async fstat()
2358 */
2359 int nfs_fstat_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data)
2360 {
2361 struct nfs_cb_data *data;
2362 struct GETATTR3args args;
2363
2364 data = malloc(sizeof(struct nfs_cb_data));
2365 if (data == NULL) {
2366 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
2367 return -1;
2368 }
2369 memset(data, 0, sizeof(struct nfs_cb_data));
2370 data->nfs = nfs;
2371 data->cb = cb;
2372 data->private_data = private_data;
2373
2374 memset(&args, 0, sizeof(GETATTR3args));
2375 args.object = nfsfh->fh;
2376
2377 if (rpc_nfs3_getattr_async(nfs->rpc, nfs_stat_1_cb, &args, data) != 0) {
2378 rpc_set_error(nfs->rpc, "RPC error: Failed to send STAT GETATTR call for %s", data->path);
2379 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2380 free_nfs_cb_data(data);
2381 return -1;
2382 }
2383 return 0;
2384 }
2385
2386 /*
2387 * Async fstat64()
2388 */
2389 int nfs_fstat64_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data)
2390 {
2391 struct nfs_cb_data *data;
2392 struct GETATTR3args args;
2393
2394 data = malloc(sizeof(struct nfs_cb_data));
2395 if (data == NULL) {
2396 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
2397 return -1;
2398 }
2399 memset(data, 0, sizeof(struct nfs_cb_data));
2400 data->nfs = nfs;
2401 data->cb = cb;
2402 data->private_data = private_data;
2403
2404 memset(&args, 0, sizeof(GETATTR3args));
2405 args.object = nfsfh->fh;
2406
2407 if (rpc_nfs3_getattr_async(nfs->rpc, nfs_stat64_1_cb, &args, data) != 0) {
2408 rpc_set_error(nfs->rpc, "RPC error: Failed to send STAT GETATTR call for %s", data->path);
2409 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2410 free_nfs_cb_data(data);
2411 return -1;
2412 }
2413 return 0;
2414 }
2415
2416
2417
2418 /*
2419 * Async fsync()
2420 */
2421 static void nfs_fsync_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2422 {
2423 struct nfs_cb_data *data = private_data;
2424 struct nfs_context *nfs = data->nfs;
2425 COMMIT3res *res;
2426
2427 assert(rpc->magic == RPC_CONTEXT_MAGIC);
2428
2429 if (status == RPC_STATUS_ERROR) {
2430 data->cb(-EFAULT, nfs, command_data, data->private_data);
2431 free_nfs_cb_data(data);
2432 return;
2433 }
2434 if (status == RPC_STATUS_CANCEL) {
2435 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2436 free_nfs_cb_data(data);
2437 return;
2438 }
2439
2440 res = command_data;
2441 if (res->status != NFS3_OK) {
2442 rpc_set_error(nfs->rpc, "NFS: Commit failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2443 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2444 free_nfs_cb_data(data);
2445 return;
2446 }
2447
2448 data->cb(0, nfs, NULL, data->private_data);
2449 free_nfs_cb_data(data);
2450 }
2451
2452 int nfs_fsync_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data)
2453 {
2454 struct nfs_cb_data *data;
2455 struct COMMIT3args args;
2456
2457 data = malloc(sizeof(struct nfs_cb_data));
2458 if (data == NULL) {
2459 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
2460 return -1;
2461 }
2462 memset(data, 0, sizeof(struct nfs_cb_data));
2463 data->nfs = nfs;
2464 data->cb = cb;
2465 data->private_data = private_data;
2466
2467 args.file = nfsfh->fh;
2468 args.offset = 0;
2469 args.count = 0;
2470 if (rpc_nfs3_commit_async(nfs->rpc, nfs_fsync_cb, &args, data) != 0) {
2471 rpc_set_error(nfs->rpc, "RPC error: Failed to send COMMIT call for %s", data->path);
2472 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2473 free_nfs_cb_data(data);
2474 return -1;
2475 }
2476 return 0;
2477 }
2478
2479
2480
2481
2482 /*
2483 * Async ftruncate()
2484 */
2485 static void nfs_ftruncate_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2486 {
2487 struct nfs_cb_data *data = private_data;
2488 struct nfs_context *nfs = data->nfs;
2489 SETATTR3res *res;
2490
2491 assert(rpc->magic == RPC_CONTEXT_MAGIC);
2492
2493 if (status == RPC_STATUS_ERROR) {
2494 data->cb(-EFAULT, nfs, command_data, data->private_data);
2495 free_nfs_cb_data(data);
2496 return;
2497 }
2498 if (status == RPC_STATUS_CANCEL) {
2499 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2500 free_nfs_cb_data(data);
2501 return;
2502 }
2503
2504 res = command_data;
2505 if (res->status != NFS3_OK) {
2506 rpc_set_error(nfs->rpc, "NFS: Setattr failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2507 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2508 free_nfs_cb_data(data);
2509 return;
2510 }
2511
2512 data->cb(0, nfs, NULL, data->private_data);
2513 free_nfs_cb_data(data);
2514 }
2515
2516 int nfs_ftruncate_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t length, nfs_cb cb, void *private_data)
2517 {
2518 struct nfs_cb_data *data;
2519 SETATTR3args args;
2520
2521 data = malloc(sizeof(struct nfs_cb_data));
2522 if (data == NULL) {
2523 rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_cb_data structure");
2524 return -1;
2525 }
2526 memset(data, 0, sizeof(struct nfs_cb_data));
2527 data->nfs = nfs;
2528 data->cb = cb;
2529 data->private_data = private_data;
2530
2531 memset(&args, 0, sizeof(SETATTR3args));
2532 args.object = nfsfh->fh;
2533 args.new_attributes.size.set_it = 1;
2534 args.new_attributes.size.set_size3_u.size = length;
2535
2536 if (rpc_nfs3_setattr_async(nfs->rpc, nfs_ftruncate_cb, &args, data) != 0) {
2537 rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
2538 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2539 free_nfs_cb_data(data);
2540 return -1;
2541 }
2542 return 0;
2543 }
2544
2545
2546 /*
2547 * Async truncate()
2548 */
2549 static int nfs_truncate_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
2550 {
2551 uint64_t offset = data->continue_int;
2552 struct nfsfh nfsfh;
2553
2554 nfsfh.fh = data->fh;
2555
2556 if (nfs_ftruncate_async(nfs, &nfsfh, offset, data->cb, data->private_data) != 0) {
2557 rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
2558 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2559 free_nfs_cb_data(data);
2560 return -1;
2561 }
2562 free_nfs_cb_data(data);
2563 return 0;
2564 }
2565
2566 int nfs_truncate_async(struct nfs_context *nfs, const char *path, uint64_t length, nfs_cb cb, void *private_data)
2567 {
2568 uint64_t offset;
2569
2570 offset = length;
2571
2572 if (nfs_lookuppath_async(nfs, path, 0, cb, private_data, nfs_truncate_continue_internal, NULL, NULL, offset) != 0) {
2573 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
2574 return -1;
2575 }
2576
2577 return 0;
2578 }
2579
2580
2581
2582
2583 /*
2584 * Async mkdir()
2585 */
2586 static void nfs_mkdir_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2587 {
2588 MKDIR3res *res;
2589 struct nfs_cb_data *data = private_data;
2590 struct nfs_context *nfs = data->nfs;
2591 char *str = data->continue_data;
2592
2593 assert(rpc->magic == RPC_CONTEXT_MAGIC);
2594
2595 str = &str[strlen(str) + 1];
2596
2597 if (status == RPC_STATUS_ERROR) {
2598 data->cb(-EFAULT, nfs, command_data, data->private_data);
2599 free_nfs_cb_data(data);
2600 return;
2601 }
2602 if (status == RPC_STATUS_CANCEL) {
2603 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2604 free_nfs_cb_data(data);
2605 return;
2606 }
2607
2608 res = command_data;
2609 if (res->status != NFS3_OK) {
2610 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));
2611 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2612 free_nfs_cb_data(data);
2613 return;
2614 }
2615
2616 data->cb(0, nfs, NULL, data->private_data);
2617 free_nfs_cb_data(data);
2618 }
2619
2620 static int nfs_mkdir_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
2621 {
2622 char *str = data->continue_data;
2623 MKDIR3args args;
2624
2625 str = &str[strlen(str) + 1];
2626
2627 memset(&args, 0, sizeof(MKDIR3args));
2628 args.where.dir = data->fh;
2629 args.where.name = str;
2630 args.attributes.mode.set_it = 1;
2631 args.attributes.mode.set_mode3_u.mode = 0755;
2632
2633 if (rpc_nfs3_mkdir_async(nfs->rpc, nfs_mkdir_cb, &args, data) != 0) {
2634 rpc_set_error(nfs->rpc, "RPC error: Failed to send MKDIR call for %s", data->path);
2635 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2636 free_nfs_cb_data(data);
2637 return -1;
2638 }
2639 return 0;
2640 }
2641
2642 int nfs_mkdir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
2643 {
2644 char *new_path;
2645 char *ptr;
2646
2647 new_path = strdup(path);
2648 if (new_path == NULL) {
2649 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for path");
2650 return -1;
2651 }
2652
2653 ptr = strrchr(new_path, '/');
2654 if (ptr == NULL) {
2655 free(new_path);
2656 rpc_set_error(nfs->rpc, "Invalid path %s", path);
2657 return -1;
2658 }
2659 *ptr = 0;
2660
2661 /* new_path now points to the parent directory, and beyond the nul terminateor is the new directory to create */
2662 if (nfs_lookuppath_async(nfs, new_path, 0, cb, private_data, nfs_mkdir_continue_internal, new_path, free, 0) != 0) {
2663 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path component");
2664 return -1;
2665 }
2666
2667 return 0;
2668 }
2669
2670
2671
2672
2673
2674 /*
2675 * Async rmdir()
2676 */
2677 static void nfs_rmdir_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2678 {
2679 RMDIR3res *res;
2680 struct nfs_cb_data *data = private_data;
2681 struct nfs_context *nfs = data->nfs;
2682 char *str = data->continue_data;
2683
2684 assert(rpc->magic == RPC_CONTEXT_MAGIC);
2685
2686 str = &str[strlen(str) + 1];
2687
2688 if (status == RPC_STATUS_ERROR) {
2689 data->cb(-EFAULT, nfs, command_data, data->private_data);
2690 free_nfs_cb_data(data);
2691 return;
2692 }
2693 if (status == RPC_STATUS_CANCEL) {
2694 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2695 free_nfs_cb_data(data);
2696 return;
2697 }
2698
2699 res = command_data;
2700 if (res->status != NFS3_OK) {
2701 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));
2702 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2703 free_nfs_cb_data(data);
2704 return;
2705 }
2706
2707 data->cb(0, nfs, NULL, data->private_data);
2708 free_nfs_cb_data(data);
2709 }
2710
2711 static int nfs_rmdir_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
2712 {
2713 char *str = data->continue_data;
2714 RMDIR3args args;
2715
2716 str = &str[strlen(str) + 1];
2717
2718 args.object.dir = data->fh;
2719 args.object.name = str;
2720 if (rpc_nfs3_rmdir_async(nfs->rpc, nfs_rmdir_cb, &args, data) != 0) {
2721 rpc_set_error(nfs->rpc, "RPC error: Failed to send RMDIR call for %s", data->path);
2722 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2723 free_nfs_cb_data(data);
2724 return -1;
2725 }
2726 return 0;
2727 }
2728
2729 int nfs_rmdir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
2730 {
2731 char *new_path;
2732 char *ptr;
2733
2734 new_path = strdup(path);
2735 if (new_path == NULL) {
2736 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for path");
2737 return -1;
2738 }
2739
2740 ptr = strrchr(new_path, '/');
2741 if (ptr == NULL) {
2742 free(new_path);
2743 rpc_set_error(nfs->rpc, "Invalid path %s", path);
2744 return -1;
2745 }
2746 *ptr = 0;
2747
2748 /* new_path now points to the parent directory, and beyond the nul terminateor is the new directory to create */
2749 if (nfs_lookuppath_async(nfs, new_path, 0, cb, private_data, nfs_rmdir_continue_internal, new_path, free, 0) != 0) {
2750 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
2751 return -1;
2752 }
2753
2754 return 0;
2755 }
2756
2757
2758
2759
2760 /*
2761 * Async creat()
2762 */
2763 struct create_cb_data {
2764 char *path;
2765 int flags;
2766 int mode;
2767 };
2768
2769 static void free_create_cb_data(void *ptr)
2770 {
2771 struct create_cb_data *data = ptr;
2772
2773 free(data->path);
2774 free(data);
2775 }
2776
2777 static void nfs_create_trunc_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2778 {
2779 struct nfs_cb_data *data = private_data;
2780 struct nfs_context *nfs = data->nfs;
2781 struct nfsfh *nfsfh = data->nfsfh;
2782 SETATTR3res *res;
2783
2784 assert(rpc->magic == RPC_CONTEXT_MAGIC);
2785
2786 if (status == RPC_STATUS_ERROR) {
2787 data->cb(-EFAULT, nfs, command_data, data->private_data);
2788 free_nfs_cb_data(data);
2789 free_nfsfh(nfsfh);
2790 return;
2791 }
2792 if (status == RPC_STATUS_CANCEL) {
2793 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2794 free_nfs_cb_data(data);
2795 free_nfsfh(nfsfh);
2796 return;
2797 }
2798
2799 res = command_data;
2800 if (res->status != NFS3_OK) {
2801 rpc_set_error(nfs->rpc, "NFS: Setattr failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
2802 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2803 free_nfs_cb_data(data);
2804 free_nfsfh(nfsfh);
2805 return;
2806 }
2807
2808 data->cb(0, nfs, nfsfh, data->private_data);
2809 free_nfs_cb_data(data);
2810 }
2811
2812 static void nfs_create_2_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2813 {
2814 LOOKUP3res *res;
2815 struct nfs_cb_data *data = private_data;
2816 struct nfs_context *nfs = data->nfs;
2817 struct nfsfh *nfsfh;
2818 struct create_cb_data *cb_data = data->continue_data;
2819 char *str = cb_data->path;
2820
2821 assert(rpc->magic == RPC_CONTEXT_MAGIC);
2822
2823 if (status == RPC_STATUS_ERROR) {
2824 data->cb(-EFAULT, nfs, command_data, data->private_data);
2825 free_nfs_cb_data(data);
2826 return;
2827 }
2828 if (status == RPC_STATUS_CANCEL) {
2829 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2830 free_nfs_cb_data(data);
2831 return;
2832 }
2833
2834 str = &str[strlen(str) + 1];
2835 res = command_data;
2836 if (res->status != NFS3_OK) {
2837 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));
2838 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2839
2840 return;
2841 }
2842
2843 nfsfh = malloc(sizeof(struct nfsfh));
2844 if (nfsfh == NULL) {
2845 rpc_set_error(nfs->rpc, "NFS: Failed to allocate nfsfh structure");
2846 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2847 free_nfs_cb_data(data);
2848 return;
2849 }
2850 memset(nfsfh, 0, sizeof(struct nfsfh));
2851
2852 if (cb_data->flags & O_SYNC) {
2853 nfsfh->is_sync = 1;
2854 }
2855 if (cb_data->flags & O_APPEND) {
2856 nfsfh->is_append = 1;
2857 }
2858
2859 /* copy the filehandle */
2860 nfsfh->fh.data.data_len = res->LOOKUP3res_u.resok.object.data.data_len;
2861 nfsfh->fh.data.data_val = malloc(nfsfh->fh.data.data_len);
2862 if (nfsfh->fh.data.data_val == NULL) {
2863 rpc_set_error(nfs->rpc, "Out of memory: Failed to allocate fh structure");
2864 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2865 free_nfs_cb_data(data);
2866 free(nfsfh);
2867 return;
2868 }
2869 memcpy(nfsfh->fh.data.data_val, res->LOOKUP3res_u.resok.object.data.data_val, nfsfh->fh.data.data_len);
2870
2871 /* Try to truncate it if we were requested to */
2872 if (cb_data->flags & O_TRUNC) {
2873 SETATTR3args args;
2874
2875 data->nfsfh = nfsfh;
2876
2877 memset(&args, 0, sizeof(SETATTR3args));
2878 args.object = nfsfh->fh;
2879 args.new_attributes.size.set_it = 1;
2880 args.new_attributes.size.set_size3_u.size = 0;
2881
2882 if (rpc_nfs3_setattr_async(nfs->rpc, nfs_create_trunc_cb,
2883 &args, data) != 0) {
2884 rpc_set_error(nfs->rpc, "RPC error: Failed to send "
2885 "SETATTR call for %s", data->path);
2886 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc),
2887 data->private_data);
2888 free_nfs_cb_data(data);
2889 free_nfsfh(nfsfh);
2890 return;
2891 }
2892 return;
2893 }
2894
2895 data->cb(0, nfs, nfsfh, data->private_data);
2896 free_nfs_cb_data(data);
2897 }
2898
2899
2900
2901 static void nfs_create_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
2902 {
2903 CREATE3res *res;
2904 struct nfs_cb_data *data = private_data;
2905 struct nfs_context *nfs = data->nfs;
2906 struct create_cb_data *cb_data = data->continue_data;
2907 char *str = cb_data->path;
2908 LOOKUP3args args;
2909
2910 assert(rpc->magic == RPC_CONTEXT_MAGIC);
2911
2912 if (status == RPC_STATUS_ERROR) {
2913 data->cb(-EFAULT, nfs, command_data, data->private_data);
2914 free_nfs_cb_data(data);
2915 return;
2916 }
2917 if (status == RPC_STATUS_CANCEL) {
2918 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
2919 free_nfs_cb_data(data);
2920 return;
2921 }
2922
2923 str = &str[strlen(str) + 1];
2924 res = command_data;
2925 if (res->status != NFS3_OK) {
2926 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));
2927 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
2928 free_nfs_cb_data(data);
2929 return;
2930 }
2931
2932 memset(&args, 0, sizeof(LOOKUP3args));
2933 args.what.dir = data->fh;
2934 args.what.name = str;
2935
2936 if (rpc_nfs3_lookup_async(nfs->rpc, nfs_create_2_cb, &args, data) != 0) {
2937 rpc_set_error(nfs->rpc, "RPC error: Failed to send lookup call for %s/%s", data->saved_path, str);
2938 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2939 free_nfs_cb_data(data);
2940 return;
2941 }
2942 return;
2943 }
2944
2945 static int nfs_create_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
2946 {
2947 struct create_cb_data *cb_data = data->continue_data;
2948 char *str = cb_data->path;
2949 CREATE3args args;
2950
2951 str = &str[strlen(str) + 1];
2952
2953 memset(&args, 0, sizeof(CREATE3args));
2954 args.where.dir = data->fh;
2955 args.where.name = str;
2956 args.how.mode = (cb_data->flags & O_EXCL) ? GUARDED : UNCHECKED;
2957 args.how.createhow3_u.obj_attributes.mode.set_it = 1;
2958 args.how.createhow3_u.obj_attributes.mode.set_mode3_u.mode = cb_data->mode;
2959
2960 if (rpc_nfs3_create_async(nfs->rpc, nfs_create_1_cb, &args, data) != 0) {
2961 rpc_set_error(nfs->rpc, "RPC error: Failed to send CREATE call for %s/%s", data->path, str);
2962 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
2963 free_nfs_cb_data(data);
2964 return -1;
2965 }
2966 return 0;
2967 }
2968
2969 int nfs_create_async(struct nfs_context *nfs, const char *path, int flags, int mode, nfs_cb cb, void *private_data)
2970 {
2971 struct create_cb_data *cb_data;
2972 char *ptr;
2973
2974 cb_data = malloc(sizeof(struct create_cb_data));
2975 if (cb_data == NULL) {
2976 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for cb data");
2977 return -1;
2978 }
2979
2980 cb_data->path = strdup(path);
2981 if (cb_data->path == NULL) {
2982 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for path");
2983 free(cb_data);
2984 return -1;
2985 }
2986
2987 ptr = strrchr(cb_data->path, '/');
2988 if (ptr == NULL) {
2989 rpc_set_error(nfs->rpc, "Invalid path %s", path);
2990 free_create_cb_data(cb_data);
2991 return -1;
2992 }
2993 *ptr = 0;
2994
2995 cb_data->flags = flags;
2996 cb_data->mode = mode;
2997
2998 /* new_path now points to the parent directory, and beyond the nul terminator is the new directory to create */
2999 if (nfs_lookuppath_async(nfs, cb_data->path, 0, cb, private_data, nfs_create_continue_internal, cb_data, free_create_cb_data, 0) != 0) {
3000 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3001 return -1;
3002 }
3003
3004 return 0;
3005 }
3006
3007 int nfs_creat_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data)
3008 {
3009 return nfs_create_async(nfs, path, 0, mode, cb, private_data);
3010 }
3011
3012
3013
3014
3015 /*
3016 * Async unlink()
3017 */
3018 static void nfs_unlink_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3019 {
3020 REMOVE3res *res;
3021 struct nfs_cb_data *data = private_data;
3022 struct nfs_context *nfs = data->nfs;
3023 char *str = data->continue_data;
3024
3025 assert(rpc->magic == RPC_CONTEXT_MAGIC);
3026
3027 str = &str[strlen(str) + 1];
3028
3029 if (status == RPC_STATUS_ERROR) {
3030 data->cb(-EFAULT, nfs, command_data, data->private_data);
3031 free_nfs_cb_data(data);
3032 return;
3033 }
3034 if (status == RPC_STATUS_CANCEL) {
3035 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3036 free_nfs_cb_data(data);
3037 return;
3038 }
3039
3040 res = command_data;
3041 if (res->status != NFS3_OK) {
3042 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));
3043 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3044 free_nfs_cb_data(data);
3045 return;
3046 }
3047
3048 data->cb(0, nfs, NULL, data->private_data);
3049 free_nfs_cb_data(data);
3050 }
3051
3052 static int nfs_unlink_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
3053 {
3054 char *str = data->continue_data;
3055 struct REMOVE3args args;
3056
3057 str = &str[strlen(str) + 1];
3058
3059 args.object.dir = data->fh;
3060 args.object.name = str;
3061 if (rpc_nfs3_remove_async(nfs->rpc, nfs_unlink_cb, &args, data) != 0) {
3062 rpc_set_error(nfs->rpc, "RPC error: Failed to send REMOVE call for %s", data->path);
3063 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3064 free_nfs_cb_data(data);
3065 return -1;
3066 }
3067 return 0;
3068 }
3069
3070 int nfs_unlink_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
3071 {
3072 char *new_path;
3073 char *ptr;
3074
3075 new_path = strdup(path);
3076 if (new_path == NULL) {
3077 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for path");
3078 return -1;
3079 }
3080
3081 ptr = strrchr(new_path, '/');
3082 if (ptr == NULL) {
3083 free(new_path);
3084 rpc_set_error(nfs->rpc, "Invalid path %s", path);
3085 return -1;
3086 }
3087 *ptr = 0;
3088
3089 /* new_path now points to the parent directory, and beyond the nul terminateor is the new directory to create */
3090 if (nfs_lookuppath_async(nfs, new_path, 0, cb, private_data, nfs_unlink_continue_internal, new_path, free, 0) != 0) {
3091 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3092 return -1;
3093 }
3094
3095 return 0;
3096 }
3097
3098
3099 /*
3100 * Async mknod()
3101 */
3102 struct mknod_cb_data {
3103 char *path;
3104 int mode;
3105 int major;
3106 int minor;
3107 };
3108
3109 static void free_mknod_cb_data(void *ptr)
3110 {
3111 struct mknod_cb_data *data = ptr;
3112
3113 free(data->path);
3114 free(data);
3115 }
3116
3117 static void nfs_mknod_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3118 {
3119 MKNOD3res *res;
3120 struct nfs_cb_data *data = private_data;
3121 struct nfs_context *nfs = data->nfs;
3122 char *str = data->continue_data;
3123
3124 assert(rpc->magic == RPC_CONTEXT_MAGIC);
3125
3126 str = &str[strlen(str) + 1];
3127
3128 if (status == RPC_STATUS_ERROR) {
3129 data->cb(-EFAULT, nfs, command_data, data->private_data);
3130 free_nfs_cb_data(data);
3131 return;
3132 }
3133 if (status == RPC_STATUS_CANCEL) {
3134 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3135 free_nfs_cb_data(data);
3136 return;
3137 }
3138
3139 res = command_data;
3140 if (res->status != NFS3_OK) {
3141 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));
3142 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3143 free_nfs_cb_data(data);
3144 return;
3145 }
3146
3147 data->cb(0, nfs, NULL, data->private_data);
3148 free_nfs_cb_data(data);
3149 }
3150
3151 static int nfs_mknod_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
3152 {
3153 struct mknod_cb_data *cb_data = data->continue_data;
3154 char *str = cb_data->path;
3155 MKNOD3args args;
3156
3157 str = &str[strlen(str) + 1];
3158
3159 args.where.dir = data->fh;
3160 args.where.name = str;
3161 switch (cb_data->mode & S_IFMT) {
3162 case S_IFCHR:
3163 args.what.type = NF3CHR;
3164 args.what.mknoddata3_u.chr_device.dev_attributes.mode.set_it = 1;
3165 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);
3166 args.what.mknoddata3_u.chr_device.spec.specdata1 = cb_data->major;
3167 args.what.mknoddata3_u.chr_device.spec.specdata2 = cb_data->minor;
3168 break;
3169 case S_IFBLK:
3170 args.what.type = NF3BLK;
3171 args.what.mknoddata3_u.blk_device.dev_attributes.mode.set_it = 1;
3172 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);
3173 args.what.mknoddata3_u.blk_device.spec.specdata1 = cb_data->major;
3174 args.what.mknoddata3_u.blk_device.spec.specdata2 = cb_data->minor;
3175 case S_IFSOCK:
3176 args.what.type = NF3SOCK;
3177 args.what.mknoddata3_u.sock_attributes.mode.set_it = 1;
3178 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);
3179 break;
3180 case S_IFIFO:
3181 args.what.type = NF3FIFO;
3182 args.what.mknoddata3_u.pipe_attributes.mode.set_it = 1;
3183 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);
3184 break;
3185 default:
3186 rpc_set_error(nfs->rpc, "Invalid file type for NFS3/MKNOD call");
3187 data->cb(-EINVAL, nfs, rpc_get_error(nfs->rpc), data->private_data);
3188 free_nfs_cb_data(data);
3189 return -1;
3190 }
3191
3192 if (rpc_nfs3_mknod_async(nfs->rpc, nfs_mknod_cb, &args, data) != 0) {
3193 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3194 free_nfs_cb_data(data);
3195 return -1;
3196 }
3197 return 0;
3198 }
3199
3200 int nfs_mknod_async(struct nfs_context *nfs, const char *path, int mode, int dev, nfs_cb cb, void *private_data)
3201 {
3202 char *ptr;
3203 struct mknod_cb_data *cb_data;
3204
3205 cb_data = malloc(sizeof(struct mknod_cb_data));
3206 if (cb_data == NULL) {
3207 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for cb data");
3208 return -1;
3209 }
3210
3211 cb_data->path = strdup(path);
3212 if (cb_data->path == NULL) {
3213 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for path");
3214 free(cb_data);
3215 return -1;
3216 }
3217
3218 ptr = strrchr(cb_data->path, '/');
3219 if (ptr == NULL) {
3220 rpc_set_error(nfs->rpc, "Invalid path %s", path);
3221 free_mknod_cb_data(cb_data);
3222 return -1;
3223 }
3224 *ptr = 0;
3225
3226 cb_data->mode = mode;
3227 cb_data->major = major(dev);
3228 cb_data->minor = minor(dev);
3229
3230 /* data->path now points to the parent directory, and beyond the nul terminateor is the new directory to create */
3231 if (nfs_lookuppath_async(nfs, cb_data->path, 0, cb, private_data, nfs_mknod_continue_internal, cb_data, free_mknod_cb_data, 0) != 0) {
3232 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3233 return -1;
3234 }
3235
3236 return 0;
3237 }
3238
3239 /*
3240 * Async opendir()
3241 */
3242
3243 /* ReadDirPlus Emulation Callback data */
3244 struct rdpe_cb_data {
3245 int getattrcount;
3246 int status;
3247 struct nfs_cb_data *data;
3248 };
3249
3250 /* ReadDirPlus Emulation LOOKUP Callback data */
3251 struct rdpe_lookup_cb_data {
3252 struct rdpe_cb_data *rdpe_cb_data;
3253 struct nfsdirent *nfsdirent;
3254 };
3255
3256 /* Workaround for servers lacking READDIRPLUS, use READDIR instead and a GETATTR-loop */
3257 static void nfs_opendir3_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3258 {
3259 LOOKUP3res *res = command_data;
3260 struct rdpe_lookup_cb_data *rdpe_lookup_cb_data = private_data;
3261 struct rdpe_cb_data *rdpe_cb_data = rdpe_lookup_cb_data->rdpe_cb_data;
3262 struct nfs_cb_data *data = rdpe_cb_data->data;
3263 struct nfsdir *nfsdir = data->continue_data;
3264 struct nfs_context *nfs = data->nfs;
3265 struct nfsdirent *nfsdirent = rdpe_lookup_cb_data->nfsdirent;
3266
3267 assert(rpc->magic == RPC_CONTEXT_MAGIC);
3268
3269 free(rdpe_lookup_cb_data);
3270
3271 rdpe_cb_data->getattrcount--;
3272
3273 if (status == RPC_STATUS_ERROR) {
3274 rpc_set_error(nfs->rpc, "LOOKUP during READDIRPLUS emulation "
3275 "failed with RPC_STATUS_ERROR");
3276 rdpe_cb_data->status = RPC_STATUS_ERROR;
3277 }
3278 if (status == RPC_STATUS_CANCEL) {
3279 rpc_set_error(nfs->rpc, "LOOKUP during READDIRPLUS emulation "
3280 "failed with RPC_STATUS_CANCEL");
3281 rdpe_cb_data->status = RPC_STATUS_CANCEL;
3282 }
3283 if (status == RPC_STATUS_SUCCESS && res->status == NFS3_OK) {
3284 if (res->LOOKUP3res_u.resok.obj_attributes.attributes_follow) {
3285 fattr3 *attributes = &res->LOOKUP3res_u.resok.obj_attributes.post_op_attr_u.attributes;
3286
3287 nfsdirent->type = attributes->type;
3288 nfsdirent->mode = attributes->mode;
3289 nfsdirent->size = attributes->size;
3290
3291 nfsdirent->atime.tv_sec = attributes->atime.seconds;
3292 nfsdirent->atime.tv_usec = attributes->atime.nseconds/1000;
3293 nfsdirent->atime_nsec = attributes->atime.nseconds;
3294 nfsdirent->mtime.tv_sec = attributes->mtime.seconds;
3295 nfsdirent->mtime.tv_usec = attributes->mtime.nseconds/1000;
3296 nfsdirent->mtime_nsec = attributes->mtime.nseconds;
3297 nfsdirent->ctime.tv_sec = attributes->ctime.seconds;
3298 nfsdirent->ctime.tv_usec = attributes->ctime.nseconds/1000;
3299 nfsdirent->ctime_nsec = attributes->ctime.nseconds;
3300 nfsdirent->uid = attributes->uid;
3301 nfsdirent->gid = attributes->gid;
3302 nfsdirent->nlink = attributes->nlink;
3303 nfsdirent->dev = attributes->fsid;
3304 nfsdirent->rdev = specdata3_to_rdev(&attributes->rdev);
3305 nfsdirent->blksize = NFS_BLKSIZE;
3306 nfsdirent->blocks = (attributes->used + 512 - 1) / 512;
3307 nfsdirent->used = attributes->used;
3308 }
3309 }
3310
3311 if (rdpe_cb_data->getattrcount == 0) {
3312 if (rdpe_cb_data->status != RPC_STATUS_SUCCESS) {
3313 rpc_set_error(nfs->rpc, "READDIRPLUS emulation "
3314 "failed: %s", rpc_get_error(rpc));
3315 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc),
3316 data->private_data);
3317 nfs_free_nfsdir(nfsdir);
3318 } else {
3319 data->cb(0, nfs, nfsdir, data->private_data);
3320 }
3321 free(rdpe_cb_data);
3322
3323 data->continue_data = NULL;
3324 free_nfs_cb_data(data);
3325 }
3326 }
3327
3328 static void nfs_opendir2_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3329 {
3330 READDIR3res *res = command_data;
3331 struct nfs_cb_data *data = private_data;
3332 struct nfs_context *nfs = data->nfs;
3333 struct nfsdir *nfsdir = data->continue_data;
3334 struct nfsdirent *nfsdirent;
3335 struct entry3 *entry;
3336 uint64_t cookie = 0;
3337 struct rdpe_cb_data *rdpe_cb_data;
3338
3339 assert(rpc->magic == RPC_CONTEXT_MAGIC);
3340
3341 if (status == RPC_STATUS_ERROR) {
3342 data->cb(-EFAULT, nfs, command_data, data->private_data);
3343 nfs_free_nfsdir(nfsdir);
3344 data->continue_data = NULL;
3345 free_nfs_cb_data(data);
3346 return;
3347 }
3348
3349 if (status == RPC_STATUS_CANCEL) {
3350 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3351 nfs_free_nfsdir(nfsdir);
3352 data->continue_data = NULL;
3353 free_nfs_cb_data(data);
3354 return;
3355 }
3356
3357 if (res->status != NFS3_OK) {
3358 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));
3359 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3360 nfs_free_nfsdir(nfsdir);
3361 data->continue_data = NULL;
3362 free_nfs_cb_data(data);
3363 return;
3364 }
3365
3366 entry =res->READDIR3res_u.resok.reply.entries;
3367 while (entry != NULL) {
3368 nfsdirent = malloc(sizeof(struct nfsdirent));
3369 if (nfsdirent == NULL) {
3370 data->cb(-ENOMEM, nfs, "Failed to allocate dirent", data->private_data);
3371 nfs_free_nfsdir(nfsdir);
3372 data->continue_data = NULL;
3373 free_nfs_cb_data(data);
3374 return;
3375 }
3376 memset(nfsdirent, 0, sizeof(struct nfsdirent));
3377 nfsdirent->name = strdup(entry->name);
3378 if (nfsdirent->name == NULL) {
3379 data->cb(-ENOMEM, nfs, "Failed to allocate dirent->name", data->private_data);
3380 free(nfsdirent);
3381 nfs_free_nfsdir(nfsdir);
3382 data->continue_data = NULL;
3383 free_nfs_cb_data(data);
3384 return;
3385 }
3386 nfsdirent->inode = entry->fileid;
3387
3388 nfsdirent->next = nfsdir->entries;
3389 nfsdir->entries = nfsdirent;
3390
3391 cookie = entry->cookie;
3392 entry = entry->nextentry;
3393 }
3394
3395 if (res->READDIR3res_u.resok.reply.eof == 0) {
3396 READDIR3args args;
3397
3398 args.dir = data->fh;
3399 args.cookie = cookie;
3400 memcpy(&args.cookieverf, res->READDIR3res_u.resok.cookieverf, sizeof(cookieverf3));
3401 args.count = 8192;
3402
3403 if (rpc_nfs3_readdir_async(nfs->rpc, nfs_opendir2_cb, &args, data) != 0) {
3404 rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIR call for %s", data->path);
3405 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3406 nfs_free_nfsdir(nfsdir);
3407 data->continue_data = NULL;
3408 free_nfs_cb_data(data);
3409 return;
3410 }
3411 return;
3412 }
3413
3414 if (res->READDIR3res_u.resok.dir_attributes.attributes_follow)
3415 nfsdir->attr = res->READDIR3res_u.resok.dir_attributes.post_op_attr_u.attributes;
3416
3417 /* steal the dirhandle */
3418 nfsdir->current = nfsdir->entries;
3419
3420 if (nfsdir->entries) {
3421 rdpe_cb_data = malloc(sizeof(struct rdpe_cb_data));
3422 rdpe_cb_data->getattrcount = 0;
3423 rdpe_cb_data->status = RPC_STATUS_SUCCESS;
3424 rdpe_cb_data->data = data;
3425 for (nfsdirent = nfsdir->entries; nfsdirent; nfsdirent = nfsdirent->next) {
3426 struct rdpe_lookup_cb_data *rdpe_lookup_cb_data;
3427 LOOKUP3args args;
3428
3429 rdpe_lookup_cb_data = malloc(sizeof(struct rdpe_lookup_cb_data));
3430 rdpe_lookup_cb_data->rdpe_cb_data = rdpe_cb_data;
3431 rdpe_lookup_cb_data->nfsdirent = nfsdirent;
3432
3433 memset(&args, 0, sizeof(LOOKUP3args));
3434 args.what.dir = data->fh;
3435 args.what.name = nfsdirent->name;
3436
3437 if (rpc_nfs3_lookup_async(nfs->rpc, nfs_opendir3_cb, &args, rdpe_lookup_cb_data) != 0) {
3438 rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIR LOOKUP call");
3439
3440 /* if we have already commands in flight, we cant just stop, we have to wait for the
3441 * commands in flight to complete
3442 */
3443 if (rdpe_cb_data->getattrcount > 0) {
3444 nfs_free_nfsdir(nfsdir);
3445 data->continue_data = NULL;
3446 free_nfs_cb_data(data);
3447 rdpe_cb_data->status = RPC_STATUS_ERROR;
3448 free(rdpe_lookup_cb_data);
3449 return;
3450 }
3451
3452 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3453 nfs_free_nfsdir(nfsdir);
3454 data->continue_data = NULL;
3455 free_nfs_cb_data(data);
3456 free(rdpe_lookup_cb_data);
3457 free(rdpe_cb_data);
3458 return;
3459 }
3460 rdpe_cb_data->getattrcount++;
3461 }
3462 }
3463 }
3464
3465 static void nfs_opendir_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3466 {
3467 READDIRPLUS3res *res = command_data;
3468 struct nfs_cb_data *data = private_data;
3469 struct nfs_context *nfs = data->nfs;
3470 struct nfsdir *nfsdir = data->continue_data;
3471 struct entryplus3 *entry;
3472 uint64_t cookie = 0;
3473
3474 assert(rpc->magic == RPC_CONTEXT_MAGIC);
3475
3476 if (status == RPC_STATUS_ERROR || (status == RPC_STATUS_SUCCESS && res->status == NFS3ERR_NOTSUPP) ){
3477 READDIR3args args;
3478
3479 args.dir = data->fh;
3480 args.cookie = cookie;
3481 memset(&args.cookieverf, 0, sizeof(cookieverf3));
3482 args.count = 8192;
3483
3484 if (rpc_nfs3_readdir_async(nfs->rpc, nfs_opendir2_cb, &args, data) != 0) {
3485 rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIR call for %s", data->path);
3486 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3487 nfs_free_nfsdir(nfsdir);
3488 data->continue_data = NULL;
3489 free_nfs_cb_data(data);
3490 return;
3491 }
3492 return;
3493 }
3494
3495 if (status == RPC_STATUS_CANCEL) {
3496 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3497 nfs_free_nfsdir(nfsdir);
3498 data->continue_data = NULL;
3499 free_nfs_cb_data(data);
3500 return;
3501 }
3502
3503 if (res->status != NFS3_OK) {
3504 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));
3505 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3506 nfs_free_nfsdir(nfsdir);
3507 data->continue_data = NULL;
3508 free_nfs_cb_data(data);
3509 return;
3510 }
3511
3512 entry =res->READDIRPLUS3res_u.resok.reply.entries;
3513 while (entry != NULL) {
3514 struct nfsdirent *nfsdirent;
3515
3516 nfsdirent = malloc(sizeof(struct nfsdirent));
3517 if (nfsdirent == NULL) {
3518 data->cb(-ENOMEM, nfs, "Failed to allocate dirent", data->private_data);
3519 nfs_free_nfsdir(nfsdir);
3520 data->continue_data = NULL;
3521 free_nfs_cb_data(data);
3522 return;
3523 }
3524 memset(nfsdirent, 0, sizeof(struct nfsdirent));
3525 nfsdirent->name = strdup(entry->name);
3526 if (nfsdirent->name == NULL) {
3527 data->cb(-ENOMEM, nfs, "Failed to allocate dirent->name", data->private_data);
3528 free(nfsdirent);
3529 nfs_free_nfsdir(nfsdir);
3530 data->continue_data = NULL;
3531 free_nfs_cb_data(data);
3532 return;
3533 }
3534 nfsdirent->inode = entry->fileid;
3535 if (entry->name_attributes.attributes_follow) {
3536 nfsdirent->type = entry->name_attributes.post_op_attr_u.attributes.type;
3537 nfsdirent->mode = entry->name_attributes.post_op_attr_u.attributes.mode;
3538 nfsdirent->size = entry->name_attributes.post_op_attr_u.attributes.size;
3539
3540 nfsdirent->atime.tv_sec = entry->name_attributes.post_op_attr_u.attributes.atime.seconds;
3541 nfsdirent->atime.tv_usec = entry->name_attributes.post_op_attr_u.attributes.atime.nseconds/1000;
3542 nfsdirent->atime_nsec = entry->name_attributes.post_op_attr_u.attributes.atime.nseconds;
3543 nfsdirent->mtime.tv_sec = entry->name_attributes.post_op_attr_u.attributes.mtime.seconds;
3544 nfsdirent->mtime.tv_usec = entry->name_attributes.post_op_attr_u.attributes.mtime.nseconds/1000;
3545 nfsdirent->mtime_nsec = entry->name_attributes.post_op_attr_u.attributes.mtime.nseconds;
3546 nfsdirent->ctime.tv_sec = entry->name_attributes.post_op_attr_u.attributes.ctime.seconds;
3547 nfsdirent->ctime.tv_usec = entry->name_attributes.post_op_attr_u.attributes.ctime.nseconds/1000;
3548 nfsdirent->ctime_nsec = entry->name_attributes.post_op_attr_u.attributes.ctime.nseconds;
3549 nfsdirent->uid = entry->name_attributes.post_op_attr_u.attributes.uid;
3550 nfsdirent->gid = entry->name_attributes.post_op_attr_u.attributes.gid;
3551 nfsdirent->nlink = entry->name_attributes.post_op_attr_u.attributes.nlink;
3552 nfsdirent->dev = entry->name_attributes.post_op_attr_u.attributes.fsid;
3553 nfsdirent->rdev = specdata3_to_rdev(&entry->name_attributes.post_op_attr_u.attributes.rdev);
3554 nfsdirent->blksize = NFS_BLKSIZE;
3555 nfsdirent->blocks = (entry->name_attributes.post_op_attr_u.attributes.used + 512 - 1) / 512;
3556 nfsdirent->used = entry->name_attributes.post_op_attr_u.attributes.used;
3557 }
3558
3559 nfsdirent->next = nfsdir->entries;
3560 nfsdir->entries = nfsdirent;
3561
3562 cookie = entry->cookie;
3563 entry = entry->nextentry;
3564 }
3565
3566 if (res->READDIRPLUS3res_u.resok.reply.eof == 0) {
3567 READDIRPLUS3args args;
3568
3569 args.dir = data->fh;
3570 args.cookie = cookie;
3571 memcpy(&args.cookieverf, res->READDIRPLUS3res_u.resok.cookieverf, sizeof(cookieverf3));
3572 args.dircount = 8192;
3573 args.maxcount = 8192;
3574
3575 if (rpc_nfs3_readdirplus_async(nfs->rpc, nfs_opendir_cb, &args, data) != 0) {
3576 rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIRPLUS call for %s", data->path);
3577 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3578 nfs_free_nfsdir(nfsdir);
3579 data->continue_data = NULL;
3580 free_nfs_cb_data(data);
3581 return;
3582 }
3583 return;
3584 }
3585
3586 if (res->READDIRPLUS3res_u.resok.dir_attributes.attributes_follow)
3587 nfsdir->attr = res->READDIRPLUS3res_u.resok.dir_attributes.post_op_attr_u.attributes;
3588
3589 /* steal the dirhandle */
3590 data->continue_data = NULL;
3591 nfsdir->current = nfsdir->entries;
3592
3593 data->cb(0, nfs, nfsdir, data->private_data);
3594 free_nfs_cb_data(data);
3595 }
3596
3597 static int nfs_opendir_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
3598 {
3599 READDIRPLUS3args args;
3600 struct nfsdir *nfsdir = data->continue_data;;
3601 struct nfsdir *cached;
3602
3603 cached = nfs_dircache_find(nfs, &data->fh);
3604 if (cached) {
3605 if (attr && attr->mtime.seconds == cached->attr.mtime.seconds) {
3606 cached->current = cached->entries;
3607 data->cb(0, nfs, cached, data->private_data);
3608 free_nfs_cb_data(data);
3609 return 0;
3610 } else {
3611 /* cache must be stale */
3612 nfs_free_nfsdir(cached);
3613 }
3614 }
3615
3616 nfsdir->fh.data.data_len = data->fh.data.data_len;
3617 nfsdir->fh.data.data_val = malloc(nfsdir->fh.data.data_len);
3618 if (nfsdir->fh.data.data_val == NULL) {
3619 rpc_set_error(nfs->rpc, "OOM when allocating fh for nfsdir");
3620 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3621 free_nfs_cb_data(data);
3622 return -1;
3623 }
3624 memcpy(nfsdir->fh.data.data_val, data->fh.data.data_val, data->fh.data.data_len);
3625
3626 args.dir = data->fh;
3627 args.cookie = 0;
3628 memset(&args.cookieverf, 0, sizeof(cookieverf3));
3629 args.dircount = 8192;
3630 args.maxcount = 8192;
3631 if (rpc_nfs3_readdirplus_async(nfs->rpc, nfs_opendir_cb, &args, data) != 0) {
3632 rpc_set_error(nfs->rpc, "RPC error: Failed to send READDIRPLUS call for %s", data->path);
3633 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3634 free_nfs_cb_data(data);
3635 return -1;
3636 }
3637 return 0;
3638 }
3639
3640 int nfs_opendir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
3641 {
3642 struct nfsdir *nfsdir;
3643
3644 nfsdir = malloc(sizeof(struct nfsdir));
3645 if (nfsdir == NULL) {
3646 rpc_set_error(nfs->rpc, "failed to allocate buffer for nfsdir");
3647 return -1;
3648 }
3649 memset(nfsdir, 0, sizeof(struct nfsdir));
3650
3651 if (nfs_lookuppath_async(nfs, path, 0, cb, private_data, nfs_opendir_continue_internal, nfsdir, free, 0) != 0) {
3652 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3653 return -1;
3654 }
3655
3656 return 0;
3657 }
3658
3659
3660 struct nfsdirent *nfs_readdir(struct nfs_context *nfs _U_, struct nfsdir *nfsdir)
3661 {
3662 struct nfsdirent *nfsdirent = nfsdir->current;
3663
3664 if (nfsdir->current != NULL) {
3665 nfsdir->current = nfsdir->current->next;
3666 }
3667 return nfsdirent;
3668 }
3669
3670
3671 /*
3672 * closedir()
3673 */
3674 void nfs_closedir(struct nfs_context *nfs, struct nfsdir *nfsdir)
3675 {
3676 nfs_dircache_add(nfs, nfsdir);
3677 }
3678
3679
3680 /*
3681 * getcwd()
3682 */
3683 void nfs_getcwd(struct nfs_context *nfs, const char **cwd)
3684 {
3685 if (cwd) {
3686 *cwd = nfs->cwd;
3687 }
3688 }
3689
3690
3691 /*
3692 * Async lseek()
3693 */
3694 struct lseek_cb_data {
3695 struct nfs_context *nfs;
3696 struct nfsfh *nfsfh;
3697 int64_t offset;
3698 nfs_cb cb;
3699 void *private_data;
3700 };
3701
3702 static void nfs_lseek_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3703 {
3704 GETATTR3res *res;
3705 struct lseek_cb_data *data = private_data;
3706 struct nfs_context *nfs = data->nfs;
3707 uint64_t size = 0;
3708
3709 assert(rpc->magic == RPC_CONTEXT_MAGIC);
3710
3711 if (status == RPC_STATUS_ERROR) {
3712 data->cb(-EFAULT, nfs, command_data, data->private_data);
3713 free(data);
3714 return;
3715 }
3716 if (status == RPC_STATUS_CANCEL) {
3717 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3718 free(data);
3719 return;
3720 }
3721
3722 res = command_data;
3723 if (res->status != NFS3_OK) {
3724 rpc_set_error(nfs->rpc, "NFS: GETATTR failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
3725 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3726 free(data);
3727 return;
3728 }
3729
3730 size = res->GETATTR3res_u.resok.obj_attributes.size;
3731
3732 if (data->offset < 0 &&
3733 (uint64_t)(-data->offset) > size) {
3734 data->cb(-EINVAL, nfs, &data->nfsfh->offset, data->private_data);
3735 } else {
3736 data->nfsfh->offset = data->offset + size;
3737 data->cb(0, nfs, &data->nfsfh->offset, data->private_data);
3738 }
3739
3740 free(data);
3741 }
3742
3743 int nfs_lseek_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int64_t offset, int whence, nfs_cb cb, void *private_data)
3744 {
3745 struct lseek_cb_data *data;
3746 struct GETATTR3args args;
3747
3748 if (whence == SEEK_SET) {
3749 if (offset < 0) {
3750 cb(-EINVAL, nfs, &nfsfh->offset, private_data);
3751 } else {
3752 nfsfh->offset = offset;
3753 cb(0, nfs, &nfsfh->offset, private_data);
3754 }
3755 return 0;
3756 }
3757 if (whence == SEEK_CUR) {
3758 if (offset < 0 &&
3759 nfsfh->offset < (uint64_t)(-offset)) {
3760 cb(-EINVAL, nfs, &nfsfh->offset, private_data);
3761 } else {
3762 nfsfh->offset += offset;
3763 cb(0, nfs, &nfsfh->offset, private_data);
3764 }
3765 return 0;
3766 }
3767
3768 data = malloc(sizeof(struct lseek_cb_data));
3769 if (data == NULL) {
3770 rpc_set_error(nfs->rpc, "Out Of Memory: Failed to malloc lseek cb data");
3771 return -1;
3772 }
3773
3774 data->nfs = nfs;
3775 data->nfsfh = nfsfh;
3776 data->offset = offset;
3777 data->cb = cb;
3778 data->private_data = private_data;
3779
3780 memset(&args, 0, sizeof(GETATTR3args));
3781 args.object = nfsfh->fh;
3782
3783 if (rpc_nfs3_getattr_async(nfs->rpc, nfs_lseek_1_cb, &args, data) != 0) {
3784 rpc_set_error(nfs->rpc, "RPC error: Failed to send LSEEK GETATTR call");
3785 free(data);
3786 return -1;
3787 }
3788 return 0;
3789 }
3790
3791
3792
3793
3794 /*
3795 * Async statvfs()
3796 */
3797 static void nfs_statvfs_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3798 {
3799 FSSTAT3res *res;
3800 struct nfs_cb_data *data = private_data;
3801 struct nfs_context *nfs = data->nfs;
3802 struct statvfs svfs;
3803
3804 assert(rpc->magic == RPC_CONTEXT_MAGIC);
3805
3806 if (status == RPC_STATUS_ERROR) {
3807 data->cb(-EFAULT, nfs, command_data, data->private_data);
3808 free_nfs_cb_data(data);
3809 return;
3810 }
3811 if (status == RPC_STATUS_CANCEL) {
3812 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3813 free_nfs_cb_data(data);
3814 return;
3815 }
3816
3817 res = command_data;
3818 if (res->status != NFS3_OK) {
3819 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));
3820 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3821 free_nfs_cb_data(data);
3822 return;
3823 }
3824
3825 svfs.f_bsize = NFS_BLKSIZE;
3826 svfs.f_frsize = NFS_BLKSIZE;
3827 svfs.f_blocks = res->FSSTAT3res_u.resok.tbytes/NFS_BLKSIZE;
3828 svfs.f_bfree = res->FSSTAT3res_u.resok.fbytes/NFS_BLKSIZE;
3829 svfs.f_bavail = res->FSSTAT3res_u.resok.abytes/NFS_BLKSIZE;
3830 svfs.f_files = res->FSSTAT3res_u.resok.tfiles;
3831 svfs.f_ffree = res->FSSTAT3res_u.resok.ffiles;
3832 #if !defined(ANDROID)
3833 svfs.f_favail = res->FSSTAT3res_u.resok.afiles;
3834 svfs.f_fsid = 0;
3835 svfs.f_flag = 0;
3836 svfs.f_namemax = 256;
3837 #endif
3838
3839 data->cb(0, nfs, &svfs, data->private_data);
3840 free_nfs_cb_data(data);
3841 }
3842
3843 static int nfs_statvfs_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
3844 {
3845 FSSTAT3args args;
3846
3847 args.fsroot = data->fh;
3848 if (rpc_nfs3_fsstat_async(nfs->rpc, nfs_statvfs_1_cb, &args, data) != 0) {
3849 rpc_set_error(nfs->rpc, "RPC error: Failed to send FSSTAT call for %s", data->path);
3850 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3851 free_nfs_cb_data(data);
3852 return -1;
3853 }
3854 return 0;
3855 }
3856
3857 int nfs_statvfs_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
3858 {
3859 if (nfs_lookuppath_async(nfs, path, 0, cb, private_data, nfs_statvfs_continue_internal, NULL, NULL, 0) != 0) {
3860 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3861 return -1;
3862 }
3863
3864 return 0;
3865 }
3866
3867
3868
3869
3870 /*
3871 * Async readlink()
3872 */
3873 static void nfs_readlink_1_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3874 {
3875 READLINK3res *res;
3876 struct nfs_cb_data *data = private_data;
3877 struct nfs_context *nfs = data->nfs;
3878
3879 assert(rpc->magic == RPC_CONTEXT_MAGIC);
3880
3881 if (status == RPC_STATUS_ERROR) {
3882 data->cb(-EFAULT, nfs, command_data, data->private_data);
3883 free_nfs_cb_data(data);
3884 return;
3885 }
3886 if (status == RPC_STATUS_CANCEL) {
3887 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3888 free_nfs_cb_data(data);
3889 return;
3890 }
3891
3892 res = command_data;
3893 if (res->status != NFS3_OK) {
3894 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));
3895 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3896 free_nfs_cb_data(data);
3897 return;
3898 }
3899
3900
3901 data->cb(0, nfs, res->READLINK3res_u.resok.data, data->private_data);
3902 free_nfs_cb_data(data);
3903 }
3904
3905 static int nfs_readlink_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
3906 {
3907 READLINK3args args;
3908
3909 args.symlink = data->fh;
3910
3911 if (rpc_nfs3_readlink_async(nfs->rpc, nfs_readlink_1_cb, &args, data) != 0) {
3912 rpc_set_error(nfs->rpc, "RPC error: Failed to send READLINK call for %s", data->path);
3913 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3914 free_nfs_cb_data(data);
3915 return -1;
3916 }
3917 return 0;
3918 }
3919
3920 int nfs_readlink_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
3921 {
3922 if (nfs_lookuppath_async(nfs, path, 1, cb, private_data, nfs_readlink_continue_internal, NULL, NULL, 0) != 0) {
3923 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3924 return -1;
3925 }
3926
3927 return 0;
3928 }
3929
3930
3931
3932
3933 /*
3934 * Async chmod()
3935 */
3936 static void nfs_chmod_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
3937 {
3938 struct nfs_cb_data *data = private_data;
3939 struct nfs_context *nfs = data->nfs;
3940 SETATTR3res *res;
3941
3942 assert(rpc->magic == RPC_CONTEXT_MAGIC);
3943
3944 if (status == RPC_STATUS_ERROR) {
3945 data->cb(-EFAULT, nfs, command_data, data->private_data);
3946 free_nfs_cb_data(data);
3947 return;
3948 }
3949 if (status == RPC_STATUS_CANCEL) {
3950 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
3951 free_nfs_cb_data(data);
3952 return;
3953 }
3954
3955 res = command_data;
3956 if (res->status != NFS3_OK) {
3957 rpc_set_error(nfs->rpc, "NFS: SETATTR failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
3958 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
3959 free_nfs_cb_data(data);
3960 return;
3961 }
3962
3963 data->cb(0, nfs, NULL, data->private_data);
3964 free_nfs_cb_data(data);
3965 }
3966
3967 static int nfs_chmod_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
3968 {
3969 SETATTR3args args;
3970
3971 memset(&args, 0, sizeof(SETATTR3args));
3972 args.object = data->fh;
3973 args.new_attributes.mode.set_it = 1;
3974 args.new_attributes.mode.set_mode3_u.mode = data->continue_int;
3975
3976 if (rpc_nfs3_setattr_async(nfs->rpc, nfs_chmod_cb, &args, data) != 0) {
3977 rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
3978 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
3979 free_nfs_cb_data(data);
3980 return -1;
3981 }
3982 return 0;
3983 }
3984
3985
3986 int nfs_chmod_async_internal(struct nfs_context *nfs, const char *path, int no_follow, int mode, nfs_cb cb, void *private_data)
3987 {
3988 if (nfs_lookuppath_async(nfs, path, no_follow, cb, private_data, nfs_chmod_continue_internal, NULL, NULL, mode) != 0) {
3989 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
3990 return -1;
3991 }
3992
3993 return 0;
3994 }
3995
3996 int nfs_chmod_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data)
3997 {
3998 return nfs_chmod_async_internal(nfs, path, 0, mode, cb, private_data);
3999 }
4000
4001 int nfs_lchmod_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data)
4002 {
4003 return nfs_chmod_async_internal(nfs, path, 1, mode, cb, private_data);
4004 }
4005
4006 /*
4007 * Async fchmod()
4008 */
4009 int nfs_fchmod_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int mode, nfs_cb cb, void *private_data)
4010 {
4011 struct nfs_cb_data *data;
4012
4013 data = malloc(sizeof(struct nfs_cb_data));
4014 if (data == NULL) {
4015 rpc_set_error(nfs->rpc, "out of memory. failed to allocate memory for nfs mount data");
4016 return -1;
4017 }
4018 memset(data, 0, sizeof(struct nfs_cb_data));
4019 data->nfs = nfs;
4020 data->cb = cb;
4021 data->private_data = private_data;
4022 data->continue_int = mode;
4023 data->fh.data.data_len = nfsfh->fh.data.data_len;
4024 data->fh.data.data_val = malloc(data->fh.data.data_len);
4025 if (data->fh.data.data_val == NULL) {
4026 rpc_set_error(nfs->rpc, "Out of memory: Failed to allocate fh");
4027 free_nfs_cb_data(data);
4028 return -1;
4029 }
4030 memcpy(data->fh.data.data_val, nfsfh->fh.data.data_val, data->fh.data.data_len);
4031
4032 if (nfs_chmod_continue_internal(nfs, NULL, data) != 0) {
4033 return -1;
4034 }
4035
4036 return 0;
4037 }
4038
4039
4040
4041 /*
4042 * Async chown()
4043 */
4044 static void nfs_chown_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
4045 {
4046 struct nfs_cb_data *data = private_data;
4047 struct nfs_context *nfs = data->nfs;
4048 SETATTR3res *res;
4049
4050 assert(rpc->magic == RPC_CONTEXT_MAGIC);
4051
4052 if (status == RPC_STATUS_ERROR) {
4053 data->cb(-EFAULT, nfs, command_data, data->private_data);
4054 free_nfs_cb_data(data);
4055 return;
4056 }
4057 if (status == RPC_STATUS_CANCEL) {
4058 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
4059 free_nfs_cb_data(data);
4060 return;
4061 }
4062
4063 res = command_data;
4064 if (res->status != NFS3_OK) {
4065 rpc_set_error(nfs->rpc, "NFS: SETATTR failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
4066 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
4067 free_nfs_cb_data(data);
4068 return;
4069 }
4070
4071 data->cb(0, nfs, NULL, data->private_data);
4072 free_nfs_cb_data(data);
4073 }
4074
4075 struct nfs_chown_data {
4076 uid_t uid;
4077 gid_t gid;
4078 };
4079
4080 static int nfs_chown_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
4081 {
4082 SETATTR3args args;
4083 struct nfs_chown_data *chown_data = data->continue_data;
4084
4085 memset(&args, 0, sizeof(SETATTR3args));
4086 args.object = data->fh;
4087 if (chown_data->uid != (uid_t)-1) {
4088 args.new_attributes.uid.set_it = 1;
4089 args.new_attributes.uid.set_uid3_u.uid = chown_data->uid;
4090 }
4091 if (chown_data->gid != (gid_t)-1) {
4092 args.new_attributes.gid.set_it = 1;
4093 args.new_attributes.gid.set_gid3_u.gid = chown_data->gid;
4094 }
4095
4096 if (rpc_nfs3_setattr_async(nfs->rpc, nfs_chown_cb, &args, data) != 0) {
4097 rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
4098 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
4099 free_nfs_cb_data(data);
4100 return -1;
4101 }
4102 return 0;
4103 }
4104
4105
4106 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)
4107 {
4108 struct nfs_chown_data *chown_data;
4109
4110 chown_data = malloc(sizeof(struct nfs_chown_data));
4111 if (chown_data == NULL) {
4112 rpc_set_error(nfs->rpc, "Failed to allocate memory for chown data structure");
4113 return -1;
4114 }
4115
4116 chown_data->uid = uid;
4117 chown_data->gid = gid;
4118
4119 if (nfs_lookuppath_async(nfs, path, no_follow, cb, private_data, nfs_chown_continue_internal, chown_data, free, 0) != 0) {
4120 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
4121 return -1;
4122 }
4123
4124 return 0;
4125 }
4126
4127 int nfs_chown_async(struct nfs_context *nfs, const char *path, int uid, int gid, nfs_cb cb, void *private_data)
4128 {
4129 return nfs_chown_async_internal(nfs, path, 0, uid, gid, cb, private_data);
4130 }
4131
4132 int nfs_lchown_async(struct nfs_context *nfs, const char *path, int uid, int gid, nfs_cb cb, void *private_data)
4133 {
4134 return nfs_chown_async_internal(nfs, path, 1, uid, gid, cb, private_data);
4135 }
4136
4137 /*
4138 * Async fchown()
4139 */
4140 int nfs_fchown_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int uid, int gid, nfs_cb cb, void *private_data)
4141 {
4142 struct nfs_cb_data *data;
4143 struct nfs_chown_data *chown_data;
4144
4145 chown_data = malloc(sizeof(struct nfs_chown_data));
4146 if (chown_data == NULL) {
4147 rpc_set_error(nfs->rpc, "Failed to allocate memory for chown data structure");
4148 return -1;
4149 }
4150
4151 chown_data->uid = uid;
4152 chown_data->gid = gid;
4153
4154 data = malloc(sizeof(struct nfs_cb_data));
4155 if (data == NULL) {
4156 rpc_set_error(nfs->rpc, "out of memory. failed to allocate memory for fchown data");
4157 free(chown_data);
4158 return -1;
4159 }
4160 memset(data, 0, sizeof(struct nfs_cb_data));
4161 data->nfs = nfs;
4162 data->cb = cb;
4163 data->private_data = private_data;
4164 data->continue_data = chown_data;
4165 data->free_continue_data = free;
4166 data->fh.data.data_len = nfsfh->fh.data.data_len;
4167 data->fh.data.data_val = malloc(data->fh.data.data_len);
4168 if (data->fh.data.data_val == NULL) {
4169 rpc_set_error(nfs->rpc, "Out of memory: Failed to allocate fh");
4170 free_nfs_cb_data(data);
4171 return -1;
4172 }
4173 memcpy(data->fh.data.data_val, nfsfh->fh.data.data_val, data->fh.data.data_len);
4174
4175 if (nfs_chown_continue_internal(nfs, NULL, data) != 0) {
4176 return -1;
4177 }
4178
4179 return 0;
4180 }
4181
4182
4183
4184
4185
4186 /*
4187 * Async utimes()
4188 */
4189 static void nfs_utimes_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
4190 {
4191 struct nfs_cb_data *data = private_data;
4192 struct nfs_context *nfs = data->nfs;
4193 SETATTR3res *res;
4194
4195 assert(rpc->magic == RPC_CONTEXT_MAGIC);
4196
4197 if (status == RPC_STATUS_ERROR) {
4198 data->cb(-EFAULT, nfs, command_data, data->private_data);
4199 free_nfs_cb_data(data);
4200 return;
4201 }
4202 if (status == RPC_STATUS_CANCEL) {
4203 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
4204 free_nfs_cb_data(data);
4205 return;
4206 }
4207
4208 res = command_data;
4209 if (res->status != NFS3_OK) {
4210 rpc_set_error(nfs->rpc, "NFS: SETATTR failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
4211 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
4212 free_nfs_cb_data(data);
4213 return;
4214 }
4215
4216 data->cb(0, nfs, NULL, data->private_data);
4217 free_nfs_cb_data(data);
4218 }
4219
4220 static int nfs_utimes_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
4221 {
4222 SETATTR3args args;
4223 struct timeval *utimes_data = data->continue_data;
4224
4225 memset(&args, 0, sizeof(SETATTR3args));
4226 args.object = data->fh;
4227 if (utimes_data != NULL) {
4228 args.new_attributes.atime.set_it = SET_TO_CLIENT_TIME;
4229 args.new_attributes.atime.set_atime_u.atime.seconds = utimes_data[0].tv_sec;
4230 args.new_attributes.atime.set_atime_u.atime.nseconds = utimes_data[0].tv_usec * 1000;
4231 args.new_attributes.mtime.set_it = SET_TO_CLIENT_TIME;
4232 args.new_attributes.mtime.set_mtime_u.mtime.seconds = utimes_data[1].tv_sec;
4233 args.new_attributes.mtime.set_mtime_u.mtime.nseconds = utimes_data[1].tv_usec * 1000;
4234 } else {
4235 args.new_attributes.atime.set_it = SET_TO_SERVER_TIME;
4236 args.new_attributes.mtime.set_it = SET_TO_SERVER_TIME;
4237 }
4238
4239 if (rpc_nfs3_setattr_async(nfs->rpc, nfs_utimes_cb, &args, data) != 0) {
4240 rpc_set_error(nfs->rpc, "RPC error: Failed to send SETATTR call for %s", data->path);
4241 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
4242 free_nfs_cb_data(data);
4243 return -1;
4244 }
4245 return 0;
4246 }
4247
4248 int nfs_utimes_async_internal(struct nfs_context *nfs, const char *path, int no_follow, struct timeval *times, nfs_cb cb, void *private_data)
4249 {
4250 struct timeval *new_times = NULL;
4251
4252 if (times != NULL) {
4253 new_times = malloc(sizeof(struct timeval)*2);
4254 if (new_times == NULL) {
4255 rpc_set_error(nfs->rpc, "Failed to allocate memory for timeval structure");
4256 return -1;
4257 }
4258
4259 memcpy(new_times, times, sizeof(struct timeval)*2);
4260 }
4261
4262 if (nfs_lookuppath_async(nfs, path, no_follow, cb, private_data, nfs_utimes_continue_internal, new_times, free, 0) != 0) {
4263 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
4264 return -1;
4265 }
4266
4267 return 0;
4268 }
4269
4270 int nfs_utimes_async(struct nfs_context *nfs, const char *path, struct timeval *times, nfs_cb cb, void *private_data)
4271 {
4272 return nfs_utimes_async_internal(nfs, path, 0, times, cb, private_data);
4273 }
4274
4275 int nfs_lutimes_async(struct nfs_context *nfs, const char *path, struct timeval *times, nfs_cb cb, void *private_data)
4276 {
4277 return nfs_utimes_async_internal(nfs, path, 1, times, cb, private_data);
4278 }
4279
4280 /*
4281 * Async utime()
4282 */
4283 int nfs_utime_async(struct nfs_context *nfs, const char *path, struct utimbuf *times, nfs_cb cb, void *private_data)
4284 {
4285 struct timeval *new_times = NULL;
4286
4287 if (times != NULL) {
4288 new_times = malloc(sizeof(struct timeval)*2);
4289 if (new_times == NULL) {
4290 rpc_set_error(nfs->rpc, "Failed to allocate memory for timeval structure");
4291 return -1;
4292 }
4293
4294 new_times[0].tv_sec = times->actime;
4295 new_times[0].tv_usec = 0;
4296 new_times[1].tv_sec = times->modtime;
4297 new_times[1].tv_usec = 0;
4298 }
4299
4300 if (nfs_lookuppath_async(nfs, path, 0, cb, private_data, nfs_utimes_continue_internal, new_times, free, 0) != 0) {
4301 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
4302 return -1;
4303 }
4304
4305 return 0;
4306 }
4307
4308
4309 /*
4310 * Async access()
4311 */
4312 static void nfs_access_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
4313 {
4314 ACCESS3res *res;
4315 struct nfs_cb_data *data = private_data;
4316 struct nfs_context *nfs = data->nfs;
4317 unsigned int mode = 0;
4318
4319 assert(rpc->magic == RPC_CONTEXT_MAGIC);
4320
4321 if (status == RPC_STATUS_ERROR) {
4322 data->cb(-EFAULT, nfs, command_data, data->private_data);
4323 free_nfs_cb_data(data);
4324 return;
4325 }
4326 if (status == RPC_STATUS_CANCEL) {
4327 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
4328 free_nfs_cb_data(data);
4329 return;
4330 }
4331
4332 res = command_data;
4333 if (res->status != NFS3_OK) {
4334 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));
4335 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
4336 free_nfs_cb_data(data);
4337 return;
4338 }
4339
4340 if ((data->continue_int & R_OK) && (res->ACCESS3res_u.resok.access & ACCESS3_READ)) {
4341 mode |= R_OK;
4342 }
4343 if ((data->continue_int & W_OK) && (res->ACCESS3res_u.resok.access & (ACCESS3_MODIFY | ACCESS3_EXTEND | ACCESS3_DELETE))) {
4344 mode |= W_OK;
4345 }
4346 if ((data->continue_int & X_OK) && (res->ACCESS3res_u.resok.access & (ACCESS3_LOOKUP | ACCESS3_EXECUTE))) {
4347 mode |= X_OK;
4348 }
4349
4350 if (data->continue_int != mode) {
4351 rpc_set_error(nfs->rpc, "NFS: ACCESS denied. Required access %c%c%c. Allowed access %c%c%c",
4352 data->continue_int&R_OK?'r':'-',
4353 data->continue_int&W_OK?'w':'-',
4354 data->continue_int&X_OK?'x':'-',
4355 mode&R_OK?'r':'-',
4356 mode&W_OK?'w':'-',
4357 mode&X_OK?'x':'-');
4358 data->cb(-EACCES, nfs, rpc_get_error(nfs->rpc), data->private_data);
4359 free_nfs_cb_data(data);
4360 return;
4361 }
4362
4363 data->cb(0, nfs, NULL, data->private_data);
4364 free_nfs_cb_data(data);
4365 }
4366
4367 static int nfs_access_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
4368 {
4369 int nfsmode = 0;
4370 ACCESS3args args;
4371
4372 if (data->continue_int & R_OK) {
4373 nfsmode |= ACCESS3_READ;
4374 }
4375 if (data->continue_int & W_OK) {
4376 nfsmode |= ACCESS3_MODIFY | ACCESS3_EXTEND | ACCESS3_DELETE;
4377 }
4378 if (data->continue_int & X_OK) {
4379 nfsmode |= ACCESS3_LOOKUP | ACCESS3_EXECUTE;
4380 }
4381
4382 memset(&args, 0, sizeof(ACCESS3args));
4383 args.object = data->fh;
4384 args.access = nfsmode;
4385
4386 if (rpc_nfs3_access_async(nfs->rpc, nfs_access_cb, &args, data) != 0) {
4387 rpc_set_error(nfs->rpc, "RPC error: Failed to send OPEN ACCESS call for %s", data->path);
4388 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
4389 free_nfs_cb_data(data);
4390 return -1;
4391 }
4392 return 0;
4393 }
4394
4395 int nfs_access_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data)
4396 {
4397 if (nfs_lookuppath_async(nfs, path, 0, cb, private_data, nfs_access_continue_internal, NULL, NULL, mode & (R_OK | W_OK | X_OK)) != 0) {
4398 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
4399 return -1;
4400 }
4401
4402 return 0;
4403 }
4404
4405
4406
4407 /*
4408 * Async access2()
4409 */
4410 static void nfs_access2_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
4411 {
4412 ACCESS3res *res;
4413 struct nfs_cb_data *data = private_data;
4414 struct nfs_context *nfs = data->nfs;
4415 unsigned int result = 0;
4416
4417 assert(rpc->magic == RPC_CONTEXT_MAGIC);
4418
4419 if (status == RPC_STATUS_ERROR) {
4420 data->cb(-EFAULT, nfs, command_data, data->private_data);
4421 free_nfs_cb_data(data);
4422 return;
4423 }
4424 if (status == RPC_STATUS_CANCEL) {
4425 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
4426 free_nfs_cb_data(data);
4427 return;
4428 }
4429
4430 res = command_data;
4431 if (res->status != NFS3_OK) {
4432 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));
4433 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
4434 free_nfs_cb_data(data);
4435 return;
4436 }
4437
4438 if (res->ACCESS3res_u.resok.access & ACCESS3_READ) {
4439 result |= R_OK;
4440 }
4441 if (res->ACCESS3res_u.resok.access & (ACCESS3_MODIFY | ACCESS3_EXTEND | ACCESS3_DELETE)) {
4442 result |= W_OK;
4443 }
4444 if (res->ACCESS3res_u.resok.access & (ACCESS3_LOOKUP | ACCESS3_EXECUTE)) {
4445 result |= X_OK;
4446 }
4447
4448 data->cb(result, nfs, NULL, data->private_data);
4449 free_nfs_cb_data(data);
4450 }
4451
4452 static int nfs_access2_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
4453 {
4454 ACCESS3args args;
4455
4456 memset(&args, 0, sizeof(ACCESS3args));
4457 args.object = data->fh;
4458 args.access = ACCESS3_READ | ACCESS3_LOOKUP | ACCESS3_MODIFY | ACCESS3_EXTEND | ACCESS3_DELETE | ACCESS3_EXECUTE;
4459
4460 if (rpc_nfs3_access_async(nfs->rpc, nfs_access2_cb, &args, data) != 0) {
4461 rpc_set_error(nfs->rpc, "RPC error: Failed to send OPEN ACCESS call for %s", data->path);
4462 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
4463 free_nfs_cb_data(data);
4464 return -1;
4465 }
4466 return 0;
4467 }
4468
4469 int nfs_access2_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data)
4470 {
4471 if (nfs_lookuppath_async(nfs, path, 0, cb, private_data, nfs_access2_continue_internal, NULL, NULL, 0) != 0) {
4472 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
4473 return -1;
4474 }
4475
4476 return 0;
4477 }
4478
4479
4480
4481 /*
4482 * Async symlink()
4483 */
4484 struct nfs_symlink_data {
4485 char *oldpath;
4486 char *newpathparent;
4487 char *newpathobject;
4488 };
4489
4490 static void free_nfs_symlink_data(void *mem)
4491 {
4492 struct nfs_symlink_data *data = mem;
4493
4494 if (data->oldpath != NULL) {
4495 free(data->oldpath);
4496 }
4497 if (data->newpathparent != NULL) {
4498 free(data->newpathparent);
4499 }
4500 if (data->newpathobject != NULL) {
4501 free(data->newpathobject);
4502 }
4503 free(data);
4504 }
4505
4506 static void nfs_symlink_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
4507 {
4508 SYMLINK3res *res;
4509 struct nfs_cb_data *data = private_data;
4510 struct nfs_context *nfs = data->nfs;
4511 struct nfs_symlink_data *symlink_data = data->continue_data;
4512
4513 assert(rpc->magic == RPC_CONTEXT_MAGIC);
4514
4515 if (status == RPC_STATUS_ERROR) {
4516 data->cb(-EFAULT, nfs, command_data, data->private_data);
4517 free_nfs_cb_data(data);
4518 return;
4519 }
4520 if (status == RPC_STATUS_CANCEL) {
4521 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
4522 free_nfs_cb_data(data);
4523 return;
4524 }
4525
4526 res = command_data;
4527 if (res->status != NFS3_OK) {
4528 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));
4529 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
4530 free_nfs_cb_data(data);
4531 return;
4532 }
4533
4534 data->cb(0, nfs, NULL, data->private_data);
4535 free_nfs_cb_data(data);
4536 }
4537
4538 static int nfs_symlink_continue_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
4539 {
4540 struct nfs_symlink_data *symlink_data = data->continue_data;
4541 SYMLINK3args args;
4542
4543 memset(&args, 0, sizeof(SYMLINK3args));
4544 args.where.dir = data->fh;
4545 args.where.name = symlink_data->newpathobject;
4546 args.symlink.symlink_attributes.mode.set_it = 1;
4547 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;
4548 args.symlink.symlink_data = symlink_data->oldpath;
4549
4550 if (rpc_nfs3_symlink_async(nfs->rpc, nfs_symlink_cb, &args, data) != 0) {
4551 rpc_set_error(nfs->rpc, "RPC error: Failed to send SYMLINK call for %s", data->path);
4552 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
4553 free_nfs_cb_data(data);
4554 return -1;
4555 }
4556 return 0;
4557 }
4558
4559 int nfs_symlink_async(struct nfs_context *nfs, const char *oldpath, const char *newpath, nfs_cb cb, void *private_data)
4560 {
4561 char *ptr;
4562 struct nfs_symlink_data *symlink_data;
4563
4564 symlink_data = malloc(sizeof(struct nfs_symlink_data));
4565 if (symlink_data == NULL) {
4566 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for symlink data");
4567 return -1;
4568 }
4569 memset(symlink_data, 0, sizeof(struct nfs_symlink_data));
4570
4571 symlink_data->oldpath = strdup(oldpath);
4572 if (symlink_data->oldpath == NULL) {
4573 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for oldpath");
4574 free_nfs_symlink_data(symlink_data);
4575 return -1;
4576 }
4577
4578 symlink_data->newpathparent = strdup(newpath);
4579 if (symlink_data->newpathparent == NULL) {
4580 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for new path");
4581 free_nfs_symlink_data(symlink_data);
4582 return -1;
4583 }
4584
4585 ptr = strrchr(symlink_data->newpathparent, '/');
4586 if (ptr == NULL) {
4587 rpc_set_error(nfs->rpc, "Invalid path %s", oldpath);
4588 free_nfs_symlink_data(symlink_data);
4589 return -1;
4590 }
4591 *ptr = 0;
4592 ptr++;
4593
4594 symlink_data->newpathobject = strdup(ptr);
4595 if (symlink_data->newpathobject == NULL) {
4596 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate mode buffer for new path");
4597 free_nfs_symlink_data(symlink_data);
4598 return -1;
4599 }
4600
4601 if (nfs_lookuppath_async(nfs, symlink_data->newpathparent, 0, cb, private_data, nfs_symlink_continue_internal, symlink_data, free_nfs_symlink_data, 0) != 0) {
4602 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
4603 return -1;
4604 }
4605
4606 return 0;
4607 }
4608
4609
4610
4611 /*
4612 * Async rename()
4613 */
4614 struct nfs_rename_data {
4615 char *oldpath;
4616 char *oldobject;
4617 struct nfs_fh3 olddir;
4618 char *newpath;
4619 char *newobject;
4620 struct nfs_fh3 newdir;
4621 };
4622
4623 static void free_nfs_rename_data(void *mem)
4624 {
4625 struct nfs_rename_data *data = mem;
4626
4627 if (data->oldpath != NULL) {
4628 free(data->oldpath);
4629 }
4630 if (data->olddir.data.data_val != NULL) {
4631 free(data->olddir.data.data_val);
4632 }
4633 if (data->newpath != NULL) {
4634 free(data->newpath);
4635 }
4636 if (data->newdir.data.data_val != NULL) {
4637 free(data->newdir.data.data_val);
4638 }
4639 free(data);
4640 }
4641
4642 static void nfs_rename_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
4643 {
4644 RENAME3res *res;
4645 struct nfs_cb_data *data = private_data;
4646 struct nfs_context *nfs = data->nfs;
4647 struct nfs_rename_data *rename_data = data->continue_data;
4648
4649 assert(rpc->magic == RPC_CONTEXT_MAGIC);
4650
4651 if (status == RPC_STATUS_ERROR) {
4652 data->cb(-EFAULT, nfs, command_data, data->private_data);
4653 free_nfs_cb_data(data);
4654 return;
4655 }
4656 if (status == RPC_STATUS_CANCEL) {
4657 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
4658 free_nfs_cb_data(data);
4659 return;
4660 }
4661
4662 res = command_data;
4663 if (res->status != NFS3_OK) {
4664 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));
4665 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
4666 free_nfs_cb_data(data);
4667 return;
4668 }
4669
4670 data->cb(0, nfs, NULL, data->private_data);
4671 free_nfs_cb_data(data);
4672 }
4673
4674 static int nfs_rename_continue_2_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
4675 {
4676 struct nfs_rename_data *rename_data = data->continue_data;
4677 RENAME3args args;
4678
4679 /* steal the filehandle */
4680 rename_data->newdir = data->fh;
4681 data->fh.data.data_val = NULL;
4682
4683 args.from.dir = rename_data->olddir;
4684 args.from.name = rename_data->oldobject;
4685 args.to.dir = rename_data->newdir;
4686 args.to.name = rename_data->newobject;
4687 if (rpc_nfs3_rename_async(nfs->rpc, nfs_rename_cb, &args, data) != 0) {
4688 rpc_set_error(nfs->rpc, "RPC error: Failed to send RENAME call for %s", data->path);
4689 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
4690 free_nfs_cb_data(data);
4691 return -1;
4692 }
4693 return 0;
4694 }
4695
4696
4697 static int nfs_rename_continue_1_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
4698 {
4699 struct nfs_rename_data *rename_data = data->continue_data;
4700 char* newpath = strdup(rename_data->newpath);
4701 if (!newpath) {
4702 rpc_set_error(nfs->rpc, "Out of memory. Could not allocate memory to store target path for rename");
4703 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
4704 free_nfs_cb_data(data);
4705 return -1;
4706 }
4707
4708 /* steal the filehandle */
4709 rename_data->olddir = data->fh;
4710 data->fh.data.data_val = NULL;
4711
4712 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) {
4713 rpc_set_error(nfs->rpc, "RPC error: Failed to send LOOKUP call for %s", newpath);
4714 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
4715 free_nfs_cb_data(data);
4716 free(newpath);
4717 return -1;
4718 }
4719 data->continue_data = NULL;
4720 free_nfs_cb_data(data);
4721 free(newpath);
4722
4723 return 0;
4724 }
4725
4726
4727 int nfs_rename_async(struct nfs_context *nfs, const char *oldpath, const char *newpath, nfs_cb cb, void *private_data)
4728 {
4729 char *ptr;
4730 struct nfs_rename_data *rename_data;
4731
4732 rename_data = malloc(sizeof(struct nfs_rename_data));
4733 if (rename_data == NULL) {
4734 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for rename data");
4735 return -1;
4736 }
4737 memset(rename_data, 0, sizeof(struct nfs_rename_data));
4738
4739 rename_data->oldpath = strdup(oldpath);
4740 if (rename_data->oldpath == NULL) {
4741 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for oldpath");
4742 free_nfs_rename_data(rename_data);
4743 return -1;
4744 }
4745 ptr = strrchr(rename_data->oldpath, '/');
4746 if (ptr == NULL) {
4747 rpc_set_error(nfs->rpc, "Invalid path %s", oldpath);
4748 free_nfs_rename_data(rename_data);
4749 return -1;
4750 }
4751 *ptr = 0;
4752 ptr++;
4753 rename_data->oldobject = ptr;
4754
4755
4756 rename_data->newpath = strdup(newpath);
4757 if (rename_data->newpath == NULL) {
4758 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for newpath");
4759 free_nfs_rename_data(rename_data);
4760 return -1;
4761 }
4762 ptr = strrchr(rename_data->newpath, '/');
4763 if (ptr == NULL) {
4764 rpc_set_error(nfs->rpc, "Invalid path %s", newpath);
4765 free_nfs_rename_data(rename_data);
4766 return -1;
4767 }
4768 *ptr = 0;
4769 ptr++;
4770 rename_data->newobject = ptr;
4771
4772
4773 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) {
4774 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
4775 return -1;
4776 }
4777
4778 return 0;
4779 }
4780
4781
4782 /*
4783 * Async link()
4784 */
4785 struct nfs_link_data {
4786 char *oldpath;
4787 struct nfs_fh3 oldfh;
4788 char *newpath;
4789 char *newobject;
4790 struct nfs_fh3 newdir;
4791 };
4792
4793 static void free_nfs_link_data(void *mem)
4794 {
4795 struct nfs_link_data *data = mem;
4796
4797 if (data->oldpath != NULL) {
4798 free(data->oldpath);
4799 }
4800 if (data->oldfh.data.data_val != NULL) {
4801 free(data->oldfh.data.data_val);
4802 }
4803 if (data->newpath != NULL) {
4804 free(data->newpath);
4805 }
4806 if (data->newdir.data.data_val != NULL) {
4807 free(data->newdir.data.data_val);
4808 }
4809 free(data);
4810 }
4811
4812 static void nfs_link_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
4813 {
4814 LINK3res *res;
4815 struct nfs_cb_data *data = private_data;
4816 struct nfs_context *nfs = data->nfs;
4817 struct nfs_link_data *link_data = data->continue_data;
4818
4819 assert(rpc->magic == RPC_CONTEXT_MAGIC);
4820
4821 if (status == RPC_STATUS_ERROR) {
4822 data->cb(-EFAULT, nfs, command_data, data->private_data);
4823 free_nfs_cb_data(data);
4824 return;
4825 }
4826 if (status == RPC_STATUS_CANCEL) {
4827 data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
4828 free_nfs_cb_data(data);
4829 return;
4830 }
4831
4832 res = command_data;
4833 if (res->status != NFS3_OK) {
4834 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));
4835 data->cb(nfsstat3_to_errno(res->status), nfs, rpc_get_error(nfs->rpc), data->private_data);
4836 free_nfs_cb_data(data);
4837 return;
4838 }
4839
4840 data->cb(0, nfs, NULL, data->private_data);
4841 free_nfs_cb_data(data);
4842 }
4843
4844 static int nfs_link_continue_2_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
4845 {
4846 struct nfs_link_data *link_data = data->continue_data;
4847 LINK3args args;
4848
4849 /* steal the filehandle */
4850 link_data->newdir = data->fh;
4851 data->fh.data.data_val = NULL;
4852
4853 memset(&args, 0, sizeof(LINK3args));
4854 args.file = link_data->oldfh;
4855 args.link.dir = link_data->newdir;
4856 args.link.name = link_data->newobject;
4857 if (rpc_nfs3_link_async(nfs->rpc, nfs_link_cb, &args, data) != 0) {
4858 rpc_set_error(nfs->rpc, "RPC error: Failed to send LINK call for %s", data->path);
4859 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
4860 free_nfs_cb_data(data);
4861 return -1;
4862 }
4863 return 0;
4864 }
4865
4866
4867 static int nfs_link_continue_1_internal(struct nfs_context *nfs, fattr3 *attr _U_, struct nfs_cb_data *data)
4868 {
4869 struct nfs_link_data *link_data = data->continue_data;
4870
4871 /* steal the filehandle */
4872 link_data->oldfh = data->fh;
4873 data->fh.data.data_val = NULL;
4874
4875 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) {
4876 rpc_set_error(nfs->rpc, "RPC error: Failed to send LOOKUP call for %s", link_data->newpath);
4877 data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
4878 free_nfs_cb_data(data);
4879 return -1;
4880 }
4881 data->continue_data = NULL;
4882 free_nfs_cb_data(data);
4883
4884 return 0;
4885 }
4886
4887
4888 int nfs_link_async(struct nfs_context *nfs, const char *oldpath, const char *newpath, nfs_cb cb, void *private_data)
4889 {
4890 char *ptr;
4891 struct nfs_link_data *link_data;
4892
4893 link_data = malloc(sizeof(struct nfs_link_data));
4894 if (link_data == NULL) {
4895 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for link data");
4896 return -1;
4897 }
4898 memset(link_data, 0, sizeof(struct nfs_link_data));
4899
4900 link_data->oldpath = strdup(oldpath);
4901 if (link_data->oldpath == NULL) {
4902 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for oldpath");
4903 free_nfs_link_data(link_data);
4904 return -1;
4905 }
4906
4907 link_data->newpath = strdup(newpath);
4908 if (link_data->newpath == NULL) {
4909 rpc_set_error(nfs->rpc, "Out of memory, failed to allocate buffer for newpath");
4910 free_nfs_link_data(link_data);
4911 return -1;
4912 }
4913 ptr = strrchr(link_data->newpath, '/');
4914 if (ptr == NULL) {
4915 rpc_set_error(nfs->rpc, "Invalid path %s", newpath);
4916 free_nfs_link_data(link_data);
4917 return -1;
4918 }
4919 *ptr = 0;
4920 ptr++;
4921 link_data->newobject = ptr;
4922
4923
4924 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) {
4925 rpc_set_error(nfs->rpc, "Out of memory: failed to start parsing the path components");
4926 return -1;
4927 }
4928
4929 return 0;
4930 }
4931
4932
4933 //qqq replace later with lseek()
4934 uint64_t nfs_get_current_offset(struct nfsfh *nfsfh)
4935 {
4936 return nfsfh->offset;
4937 }
4938
4939
4940
4941 /*
4942 * Get the maximum supported READ3 size by the server
4943 */
4944 uint64_t nfs_get_readmax(struct nfs_context *nfs)
4945 {
4946 return nfs->readmax;
4947 }
4948
4949 /*
4950 * Get the maximum supported WRITE3 size by the server
4951 */
4952 uint64_t nfs_get_writemax(struct nfs_context *nfs)
4953 {
4954 return nfs->writemax;
4955 }
4956
4957 void nfs_set_tcp_syncnt(struct nfs_context *nfs, int v) {
4958 rpc_set_tcp_syncnt(nfs->rpc, v);
4959 }
4960
4961 void nfs_set_uid(struct nfs_context *nfs, int uid) {
4962 rpc_set_uid(nfs->rpc, uid);
4963 }
4964
4965 void nfs_set_gid(struct nfs_context *nfs, int gid) {
4966 rpc_set_gid(nfs->rpc, gid);
4967 }
4968
4969 void nfs_set_readahead(struct nfs_context *nfs, uint32_t v) {
4970 rpc_set_readahead(nfs->rpc, v);
4971 }
4972
4973 void nfs_set_error(struct nfs_context *nfs, char *error_string, ...)
4974 {
4975 va_list ap;
4976 char *str = NULL;
4977
4978 va_start(ap, error_string);
4979 str = malloc(1024);
4980 vsnprintf(str, 1024, error_string, ap);
4981 if (nfs->rpc->error_string != NULL) {
4982 free(nfs->rpc->error_string);
4983 }
4984 nfs->rpc->error_string = str;
4985 va_end(ap);
4986 }
4987
4988
4989
4990 struct mount_cb_data {
4991 rpc_cb cb;
4992 void *private_data;
4993 char *server;
4994 };
4995
4996 static void free_mount_cb_data(struct mount_cb_data *data)
4997 {
4998 if (data->server != NULL) {
4999 free(data->server);
5000 data->server = NULL;
5001 }
5002
5003 free(data);
5004 }
5005
5006 static void mount_export_5_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
5007 {
5008 struct mount_cb_data *data = private_data;
5009
5010 assert(rpc->magic == RPC_CONTEXT_MAGIC);
5011
5012 if (status == RPC_STATUS_ERROR) {
5013 data->cb(rpc, -EFAULT, command_data, data->private_data);
5014 free_mount_cb_data(data);
5015 return;
5016 }
5017 if (status == RPC_STATUS_CANCEL) {
5018 data->cb(rpc, -EINTR, "Command was cancelled", data->private_data);
5019 free_mount_cb_data(data);
5020 return;
5021 }
5022
5023 data->cb(rpc, 0, command_data, data->private_data);
5024 if (rpc_disconnect(rpc, "normal disconnect") != 0) {
5025 rpc_set_error(rpc, "Failed to disconnect\n");
5026 }
5027 free_mount_cb_data(data);
5028 }
5029
5030 static void mount_export_4_cb(struct rpc_context *rpc, int status, void *command_data, void *private_data)
5031 {
5032 struct mount_cb_data *data = private_data;
5033
5034 assert(rpc->magic == RPC_CONTEXT_MAGIC);
5035
5036 /* Dont want any more callbacks even if the socket is closed */
5037 rpc->connect_cb = NULL;
5038
5039 if (status == RPC_STATUS_ERROR) {
5040 data->cb(rpc, -EFAULT, command_data, data->private_data);
5041 free_mount_cb_data(data);
5042 return;
5043 }
5044 if (status == RPC_STATUS_CANCEL) {
5045 data->cb(rpc, -EINTR, "Command was cancelled", data->private_data);
5046 free_mount_cb_data(data);
5047 return;
5048 }
5049
5050 if (rpc_mount3_export_async(rpc, mount_export_5_cb, data) != 0) {
5051 data->cb(rpc, -ENOMEM, command_data, data->private_data);
5052 free_mount_cb_data(data);
5053 return;
5054 }
5055 }
5056
5057 int mount_getexports_async(struct rpc_context *rpc, const char *server, rpc_cb cb, void *private_data)
5058 {
5059 struct mount_cb_data *data;
5060
5061 assert(rpc->magic == RPC_CONTEXT_MAGIC);
5062
5063 data = malloc(sizeof(struct mount_cb_data));
5064 if (data == NULL) {
5065 return -1;
5066 }
5067 memset(data, 0, sizeof(struct mount_cb_data));
5068 data->cb = cb;
5069 data->private_data = private_data;
5070 data->server = strdup(server);
5071 if (data->server == NULL) {
5072 free_mount_cb_data(data);
5073 return -1;
5074 }
5075 if (rpc_connect_program_async(rpc, data->server, MOUNT_PROGRAM, MOUNT_V3, mount_export_4_cb, data) != 0) {
5076 rpc_set_error(rpc, "Failed to start connection");
5077 free_mount_cb_data(data);
5078 return -1;
5079 }
5080
5081 return 0;
5082 }
5083
5084 struct rpc_context *nfs_get_rpc_context(struct nfs_context *nfs)
5085 {
5086 assert(nfs->rpc->magic == RPC_CONTEXT_MAGIC);
5087 return nfs->rpc;
5088 }
5089
5090 const char *nfs_get_server(struct nfs_context *nfs) {
5091 return nfs->server;
5092 }
5093
5094 const char *nfs_get_export(struct nfs_context *nfs) {
5095 return nfs->export;
5096 }
5097
5098 const struct nfs_fh3 *nfs_get_rootfh(struct nfs_context *nfs) {
5099 return &nfs->rootfh;
5100 }
5101
5102 struct nfs_fh3 *nfs_get_fh(struct nfsfh *nfsfh) {
5103 return &nfsfh->fh;
5104 }
libnfs Piment Noir Debian package repository