1 /* NFSv4.1 client for Windows
2 * Copyright © 2012 The Regents of the University of Michigan
3 *
4 * Olga Kornievskaia <aglo@umich.edu>
5 * Casey Bodley <cbodley@umich.edu>
6 *
7 * This library is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU Lesser General Public License as published by
9 * the Free Software Foundation; either version 2.1 of the License, or (at
10 * your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful, but
13 * without any warranty; without even the implied warranty of merchantability
14 * or fitness for a particular purpose. See the GNU Lesser General Public
15 * License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public License
18 * along with this library; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA
20 */
21
22 #include <windows.h>
23 #include <strsafe.h>
24 #include <stdlib.h>
25 #include "from_kernel.h"
26 #include "nfs41_ops.h"
27 #include "daemon_debug.h"
28 #include "upcall.h"
29 #include "util.h"
30
31
32 typedef union _FILE_DIR_INFO_UNION {
33 ULONG NextEntryOffset;
34 FILE_NAMES_INFORMATION fni;
35 FILE_DIRECTORY_INFO fdi;
36 FILE_FULL_DIR_INFO ffdi;
37 FILE_ID_FULL_DIR_INFO fifdi;
38 FILE_BOTH_DIR_INFORMATION fbdi;
39 FILE_ID_BOTH_DIR_INFO fibdi;
40 } FILE_DIR_INFO_UNION, *PFILE_DIR_INFO_UNION;
41
42
43 /* NFS41_DIR_QUERY */
parse_readdir(unsigned char * buffer,uint32_t length,nfs41_upcall * upcall)44 static int parse_readdir(unsigned char *buffer, uint32_t length, nfs41_upcall *upcall)
45 {
46 int status;
47 readdir_upcall_args *args = &upcall->args.readdir;
48
49 status = safe_read(&buffer, &length, &args->query_class, sizeof(args->query_class));
50 if (status) goto out;
51 status = safe_read(&buffer, &length, &args->buf_len, sizeof(args->buf_len));
52 if (status) goto out;
53 status = get_name(&buffer, &length, &args->filter);
54 if (status) goto out;
55 status = safe_read(&buffer, &length, &args->initial, sizeof(args->initial));
56 if (status) goto out;
57 status = safe_read(&buffer, &length, &args->restart, sizeof(args->restart));
58 if (status) goto out;
59 status = safe_read(&buffer, &length, &args->single, sizeof(args->single));
60 if (status) goto out;
61 status = safe_read(&buffer, &length, &args->kbuf, sizeof(args->kbuf));
62 if (status) goto out;
63 args->root = upcall->root_ref;
64 args->state = upcall->state_ref;
65
66 dprintf(1, "parsing NFS41_DIR_QUERY: info_class=%d buf_len=%d "
67 "filter='%s'\n\tInitial\\Restart\\Single %d\\%d\\%d buf=%p\n",
68 args->query_class, args->buf_len, args->filter,
69 args->initial, args->restart, args->single, args->kbuf);
70 out:
71 return status;
72 }
73
74 #define FILTER_STAR '*'
75 #define FILTER_QM '>'
76
skip_stars(const char * filter)77 static __inline const char* skip_stars(
78 const char *filter)
79 {
80 while (*filter == FILTER_STAR)
81 filter++;
82 return filter;
83 }
84
readdir_filter(const char * filter,const char * name)85 static int readdir_filter(
86 const char *filter,
87 const char *name)
88 {
89 const char *f = filter, *n = name;
90
91 while (*f && *n) {
92 if (*f == FILTER_STAR) {
93 f = skip_stars(f);
94 if (*f == '\0')
95 return 1;
96 while (*n && !readdir_filter(f, n))
97 n++;
98 } else if (*f == FILTER_QM || *f == *n) {
99 f++;
100 n++;
101 } else
102 return 0;
103 }
104 return *f == *n || *skip_stars(f) == '\0';
105 }
106
readdir_size_for_entry(IN int query_class,IN uint32_t wname_size)107 static uint32_t readdir_size_for_entry(
108 IN int query_class,
109 IN uint32_t wname_size)
110 {
111 uint32_t needed = wname_size;
112 switch (query_class)
113 {
114 case FileDirectoryInformation:
115 needed += FIELD_OFFSET(FILE_DIRECTORY_INFO, FileName);
116 break;
117 case FileIdFullDirectoryInformation:
118 needed += FIELD_OFFSET(FILE_ID_FULL_DIR_INFO, FileName);
119 break;
120 case FileFullDirectoryInformation:
121 needed += FIELD_OFFSET(FILE_FULL_DIR_INFO, FileName);
122 break;
123 case FileIdBothDirectoryInformation:
124 needed += FIELD_OFFSET(FILE_ID_BOTH_DIR_INFO, FileName);
125 break;
126 case FileBothDirectoryInformation:
127 needed += FIELD_OFFSET(FILE_BOTH_DIR_INFORMATION, FileName);
128 break;
129 case FileNamesInformation:
130 needed += FIELD_OFFSET(FILE_NAMES_INFORMATION, FileName);
131 break;
132 default:
133 eprintf("unhandled dir query class %d\n", query_class);
134 return 0;
135 }
136 return needed;
137 }
138
readdir_copy_dir_info(IN nfs41_readdir_entry * entry,IN PFILE_DIR_INFO_UNION info)139 static void readdir_copy_dir_info(
140 IN nfs41_readdir_entry *entry,
141 IN PFILE_DIR_INFO_UNION info)
142 {
143 info->fdi.FileIndex = (ULONG)entry->attr_info.fileid;
144 nfs_time_to_file_time(&entry->attr_info.time_create,
145 &info->fdi.CreationTime);
146 nfs_time_to_file_time(&entry->attr_info.time_access,
147 &info->fdi.LastAccessTime);
148 nfs_time_to_file_time(&entry->attr_info.time_modify,
149 &info->fdi.LastWriteTime);
150 /* XXX: was using 'change' attr, but that wasn't giving a time */
151 nfs_time_to_file_time(&entry->attr_info.time_modify,
152 &info->fdi.ChangeTime);
153 info->fdi.EndOfFile.QuadPart =
154 info->fdi.AllocationSize.QuadPart =
155 entry->attr_info.size;
156 info->fdi.FileAttributes = nfs_file_info_to_attributes(
157 &entry->attr_info);
158 }
159
readdir_copy_shortname(IN LPCWSTR name,OUT LPWSTR name_out,OUT CCHAR * name_size_out)160 static void readdir_copy_shortname(
161 IN LPCWSTR name,
162 OUT LPWSTR name_out,
163 OUT CCHAR *name_size_out)
164 {
165 /* GetShortPathName returns number of characters, not including \0 */
166 *name_size_out = (CCHAR)GetShortPathNameW(name, name_out, 12);
167 if (*name_size_out) {
168 #ifndef __REACTOS__
169 *name_size_out++;
170 #else
171 (*name_size_out)++;
172 #endif
173 *name_size_out *= sizeof(WCHAR);
174 }
175 }
176
readdir_copy_full_dir_info(IN nfs41_readdir_entry * entry,IN PFILE_DIR_INFO_UNION info)177 static void readdir_copy_full_dir_info(
178 IN nfs41_readdir_entry *entry,
179 IN PFILE_DIR_INFO_UNION info)
180 {
181 readdir_copy_dir_info(entry, info);
182 /* for files with the FILE_ATTRIBUTE_REPARSE_POINT attribute,
183 * EaSize is used instead to specify its reparse tag. this makes
184 * the 'dir' command to show files as <SYMLINK>, and triggers a
185 * FSCTL_GET_REPARSE_POINT to query the symlink target
186 */
187 info->fifdi.EaSize = entry->attr_info.type == NF4LNK ?
188 IO_REPARSE_TAG_SYMLINK : 0;
189 }
190
readdir_copy_both_dir_info(IN nfs41_readdir_entry * entry,IN LPWSTR wname,IN PFILE_DIR_INFO_UNION info)191 static void readdir_copy_both_dir_info(
192 IN nfs41_readdir_entry *entry,
193 IN LPWSTR wname,
194 IN PFILE_DIR_INFO_UNION info)
195 {
196 readdir_copy_full_dir_info(entry, info);
197 readdir_copy_shortname(wname, info->fbdi.ShortName,
198 &info->fbdi.ShortNameLength);
199 }
200
readdir_copy_filename(IN LPCWSTR name,IN uint32_t name_size,OUT LPWSTR name_out,OUT ULONG * name_size_out)201 static void readdir_copy_filename(
202 IN LPCWSTR name,
203 IN uint32_t name_size,
204 OUT LPWSTR name_out,
205 OUT ULONG *name_size_out)
206 {
207 *name_size_out = name_size;
208 memcpy(name_out, name, name_size);
209 }
210
format_abs_path(IN const nfs41_abs_path * path,IN const nfs41_component * name,OUT nfs41_abs_path * path_out)211 static int format_abs_path(
212 IN const nfs41_abs_path *path,
213 IN const nfs41_component *name,
214 OUT nfs41_abs_path *path_out)
215 {
216 /* format an absolute path 'parent\name' */
217 int status = NO_ERROR;
218
219 InitializeSRWLock(&path_out->lock);
220 abs_path_copy(path_out, path);
221 if (FAILED(StringCchPrintfA(path_out->path + path_out->len,
222 NFS41_MAX_PATH_LEN - path_out->len, "\\%s", name->name))) {
223 status = ERROR_FILENAME_EXCED_RANGE;
224 goto out;
225 }
226 path_out->len += name->len + 1;
227 out:
228 return status;
229 }
230
lookup_entry(IN nfs41_root * root,IN nfs41_session * session,IN nfs41_path_fh * parent,OUT nfs41_readdir_entry * entry)231 static int lookup_entry(
232 IN nfs41_root *root,
233 IN nfs41_session *session,
234 IN nfs41_path_fh *parent,
235 OUT nfs41_readdir_entry *entry)
236 {
237 nfs41_abs_path path;
238 nfs41_component name;
239 int status;
240
241 name.name = entry->name;
242 name.len = (unsigned short)entry->name_len - 1;
243
244 status = format_abs_path(parent->path, &name, &path);
245 if (status) goto out;
246
247 status = nfs41_lookup(root, session, &path,
248 NULL, NULL, &entry->attr_info, NULL);
249 if (status) goto out;
250 out:
251 return status;
252 }
253
lookup_symlink(IN nfs41_root * root,IN nfs41_session * session,IN nfs41_path_fh * parent,IN const nfs41_component * name,OUT nfs41_file_info * info_out)254 static int lookup_symlink(
255 IN nfs41_root *root,
256 IN nfs41_session *session,
257 IN nfs41_path_fh *parent,
258 IN const nfs41_component *name,
259 OUT nfs41_file_info *info_out)
260 {
261 nfs41_abs_path path;
262 nfs41_path_fh file;
263 nfs41_file_info info;
264 int status;
265
266 status = format_abs_path(parent->path, name, &path);
267 if (status) goto out;
268
269 file.path = &path;
270 status = nfs41_lookup(root, session, &path, NULL, &file, &info, &session);
271 if (status) goto out;
272
273 last_component(path.path, path.path + path.len, &file.name);
274
275 status = nfs41_symlink_follow(root, session, &file, &info);
276 if (status) goto out;
277
278 info_out->symlink_dir = info.type == NF4DIR;
279 out:
280 return status;
281 }
282
readdir_copy_entry(IN readdir_upcall_args * args,IN nfs41_readdir_entry * entry,IN OUT unsigned char ** dst_pos,IN OUT uint32_t * dst_len)283 static int readdir_copy_entry(
284 IN readdir_upcall_args *args,
285 IN nfs41_readdir_entry *entry,
286 IN OUT unsigned char **dst_pos,
287 IN OUT uint32_t *dst_len)
288 {
289 int status = 0;
290 WCHAR wname[NFS4_OPAQUE_LIMIT];
291 uint32_t wname_len, wname_size, needed;
292 PFILE_DIR_INFO_UNION info;
293
294 wname_len = MultiByteToWideChar(CP_UTF8, 0,
295 entry->name, entry->name_len, wname, NFS4_OPAQUE_LIMIT);
296 wname_size = (wname_len - 1) * sizeof(WCHAR);
297
298 needed = readdir_size_for_entry(args->query_class, wname_size);
299 if (!needed || needed > *dst_len) {
300 status = -1;
301 goto out;
302 }
303
304 info = (PFILE_DIR_INFO_UNION)*dst_pos;
305 info->NextEntryOffset = align8(needed);
306 *dst_pos += info->NextEntryOffset;
307 *dst_len -= info->NextEntryOffset;
308
309 if (entry->attr_info.rdattr_error == NFS4ERR_MOVED) {
310 entry->attr_info.type = NF4DIR; /* default to dir */
311 /* look up attributes for referral entries, but ignore return value;
312 * it's okay if lookup fails, we'll just write garbage attributes */
313 lookup_entry(args->root, args->state->session,
314 &args->state->file, entry);
315 } else if (entry->attr_info.type == NF4LNK) {
316 nfs41_component name;
317 name.name = entry->name;
318 name.len = (unsigned short)entry->name_len - 1;
319 /* look up the symlink target to see whether it's a directory */
320 lookup_symlink(args->root, args->state->session,
321 &args->state->file, &name, &entry->attr_info);
322 }
323
324 switch (args->query_class)
325 {
326 case FileNamesInformation:
327 info->fni.FileIndex = 0;
328 readdir_copy_filename(wname, wname_size,
329 info->fni.FileName, &info->fni.FileNameLength);
330 break;
331 case FileDirectoryInformation:
332 readdir_copy_dir_info(entry, info);
333 readdir_copy_filename(wname, wname_size,
334 info->fdi.FileName, &info->fdi.FileNameLength);
335 break;
336 case FileFullDirectoryInformation:
337 readdir_copy_full_dir_info(entry, info);
338 readdir_copy_filename(wname, wname_size,
339 info->ffdi.FileName, &info->ffdi.FileNameLength);
340 break;
341 case FileIdFullDirectoryInformation:
342 readdir_copy_full_dir_info(entry, info);
343 info->fibdi.FileId.QuadPart = (LONGLONG)entry->attr_info.fileid;
344 readdir_copy_filename(wname, wname_size,
345 info->fifdi.FileName, &info->fifdi.FileNameLength);
346 break;
347 case FileBothDirectoryInformation:
348 readdir_copy_both_dir_info(entry, wname, info);
349 readdir_copy_filename(wname, wname_size,
350 info->fbdi.FileName, &info->fbdi.FileNameLength);
351 break;
352 case FileIdBothDirectoryInformation:
353 readdir_copy_both_dir_info(entry, wname, info);
354 info->fibdi.FileId.QuadPart = (LONGLONG)entry->attr_info.fileid;
355 readdir_copy_filename(wname, wname_size,
356 info->fibdi.FileName, &info->fibdi.FileNameLength);
357 break;
358 default:
359 eprintf("unhandled dir query class %d\n", args->query_class);
360 status = -1;
361 break;
362 }
363 out:
364 return status;
365 }
366
367 #define COOKIE_DOT ((uint64_t)-2)
368 #define COOKIE_DOTDOT ((uint64_t)-1)
369
readdir_add_dots(IN readdir_upcall_args * args,IN OUT unsigned char * entry_buf,IN uint32_t entry_buf_len,OUT uint32_t * len_out,OUT uint32_t ** last_offset)370 static int readdir_add_dots(
371 IN readdir_upcall_args *args,
372 IN OUT unsigned char *entry_buf,
373 IN uint32_t entry_buf_len,
374 OUT uint32_t *len_out,
375 OUT uint32_t **last_offset)
376 {
377 int status = 0;
378 const uint32_t entry_len = (uint32_t)FIELD_OFFSET(nfs41_readdir_entry, name);
379 nfs41_readdir_entry *entry;
380 nfs41_open_state *state = args->state;
381
382 *len_out = 0;
383 *last_offset = NULL;
384 switch (state->cookie.cookie) {
385 case 0:
386 if (entry_buf_len < entry_len + 2) {
387 status = ERROR_BUFFER_OVERFLOW;
388 dprintf(1, "not enough room for '.' entry. received %d need %d\n",
389 entry_buf_len, entry_len + 2);
390 args->query_reply_len = entry_len + 2;
391 goto out;
392 }
393
394 entry = (nfs41_readdir_entry*)entry_buf;
395 ZeroMemory(&entry->attr_info, sizeof(nfs41_file_info));
396
397 status = nfs41_cached_getattr(state->session,
398 &state->file, &entry->attr_info);
399 if (status) {
400 dprintf(1, "failed to add '.' entry.\n");
401 goto out;
402 }
403 entry->cookie = COOKIE_DOT;
404 entry->name_len = 2;
405 StringCbCopyA(entry->name, entry->name_len, ".");
406 entry->next_entry_offset = entry_len + entry->name_len;
407
408 entry_buf += entry->next_entry_offset;
409 entry_buf_len -= entry->next_entry_offset;
410 *len_out += entry->next_entry_offset;
411 *last_offset = &entry->next_entry_offset;
412 if (args->single)
413 break;
414 /* else no break! */
415 case COOKIE_DOT:
416 if (entry_buf_len < entry_len + 3) {
417 status = ERROR_BUFFER_OVERFLOW;
418 dprintf(1, "not enough room for '..' entry. received %d need %d\n",
419 entry_buf_len, entry_len);
420 args->query_reply_len = entry_len + 2;
421 goto out;
422 }
423 /* XXX: this skips '..' when listing root fh */
424 if (state->file.name.len == 0)
425 break;
426
427 entry = (nfs41_readdir_entry*)entry_buf;
428 ZeroMemory(&entry->attr_info, sizeof(nfs41_file_info));
429
430 status = nfs41_cached_getattr(state->session,
431 &state->parent, &entry->attr_info);
432 if (status) {
433 status = ERROR_FILE_NOT_FOUND;
434 dprintf(1, "failed to add '..' entry.\n");
435 goto out;
436 }
437 entry->cookie = COOKIE_DOTDOT;
438 entry->name_len = 3;
439 StringCbCopyA(entry->name, entry->name_len, "..");
440 entry->next_entry_offset = entry_len + entry->name_len;
441
442 entry_buf += entry->next_entry_offset;
443 entry_buf_len -= entry->next_entry_offset;
444 *len_out += entry->next_entry_offset;
445 *last_offset = &entry->next_entry_offset;
446 break;
447 }
448 if (state->cookie.cookie == COOKIE_DOTDOT ||
449 state->cookie.cookie == COOKIE_DOT)
450 ZeroMemory(&state->cookie, sizeof(nfs41_readdir_cookie));
451 out:
452 return status;
453 }
454
handle_readdir(nfs41_upcall * upcall)455 static int handle_readdir(nfs41_upcall *upcall)
456 {
457 int status;
458 readdir_upcall_args *args = &upcall->args.readdir;
459 nfs41_open_state *state = upcall->state_ref;
460 unsigned char *entry_buf = NULL;
461 uint32_t entry_buf_len;
462 bitmap4 attr_request;
463 bool_t eof;
464 /* make sure we allocate enough space for one nfs41_readdir_entry */
465 const uint32_t max_buf_len = max(args->buf_len,
466 sizeof(nfs41_readdir_entry) + NFS41_MAX_COMPONENT_LEN);
467
468 dprintf(1, "-> handle_nfs41_dirquery(%s,%d,%d,%d)\n",
469 args->filter, args->initial, args->restart, args->single);
470
471 args->query_reply_len = 0;
472
473 if (args->initial || args->restart) {
474 ZeroMemory(&state->cookie, sizeof(nfs41_readdir_cookie));
475 if (!state->cookie.cookie)
476 dprintf(1, "initializing the 1st readdir cookie\n");
477 else if (args->restart)
478 dprintf(1, "restarting; clearing previous cookie %llu\n",
479 state->cookie.cookie);
480 else if (args->initial)
481 dprintf(1, "*** initial; clearing previous cookie %llu!\n",
482 state->cookie.cookie);
483 } else if (!state->cookie.cookie) {
484 dprintf(1, "handle_nfs41_readdir: EOF\n");
485 status = ERROR_NO_MORE_FILES;
486 goto out;
487 }
488
489 entry_buf = calloc(max_buf_len, sizeof(unsigned char));
490 if (entry_buf == NULL) {
491 status = GetLastError();
492 goto out_free_cookie;
493 }
494 fetch_entries:
495 entry_buf_len = max_buf_len;
496
497 nfs41_superblock_getattr_mask(state->file.fh.superblock, &attr_request);
498 attr_request.arr[0] |= FATTR4_WORD0_RDATTR_ERROR;
499
500 if (strchr(args->filter, FILTER_STAR) || strchr(args->filter, FILTER_QM)) {
501 /* use READDIR for wildcards */
502
503 uint32_t dots_len = 0;
504 uint32_t *dots_next_offset = NULL;
505
506 if (args->filter[0] == '*' && args->filter[1] == '\0') {
507 status = readdir_add_dots(args, entry_buf,
508 entry_buf_len, &dots_len, &dots_next_offset);
509 if (status)
510 goto out_free_cookie;
511 entry_buf_len -= dots_len;
512 }
513
514 if (dots_len && args->single) {
515 dprintf(2, "skipping nfs41_readdir because the single query "
516 "will use . or ..\n");
517 entry_buf_len = 0;
518 eof = 0;
519 } else {
520 dprintf(2, "calling nfs41_readdir with cookie %llu\n",
521 state->cookie.cookie);
522 status = nfs41_readdir(state->session, &state->file,
523 &attr_request, &state->cookie, entry_buf + dots_len,
524 &entry_buf_len, &eof);
525 if (status) {
526 dprintf(1, "nfs41_readdir failed with %s\n",
527 nfs_error_string(status));
528 status = nfs_to_windows_error(status, ERROR_BAD_NET_RESP);
529 goto out_free_cookie;
530 }
531 }
532
533 if (!entry_buf_len && dots_next_offset)
534 *dots_next_offset = 0;
535 entry_buf_len += dots_len;
536 } else {
537 /* use LOOKUP for single files */
538 nfs41_readdir_entry *entry = (nfs41_readdir_entry*)entry_buf;
539 entry->cookie = 0;
540 entry->name_len = (uint32_t)strlen(args->filter) + 1;
541 StringCbCopyA(entry->name, entry->name_len, args->filter);
542 entry->next_entry_offset = 0;
543
544 status = lookup_entry(upcall->root_ref,
545 state->session, &state->file, entry);
546 if (status) {
547 dprintf(1, "single_lookup failed with %d\n", status);
548 goto out_free_cookie;
549 }
550 entry_buf_len = entry->name_len +
551 FIELD_OFFSET(nfs41_readdir_entry, name);
552
553 eof = 1;
554 }
555
556 status = args->initial ? ERROR_FILE_NOT_FOUND : ERROR_NO_MORE_FILES;
557
558 if (entry_buf_len) {
559 unsigned char *entry_pos = entry_buf;
560 unsigned char *dst_pos = args->kbuf;
561 uint32_t dst_len = args->buf_len;
562 nfs41_readdir_entry *entry;
563 PULONG offset, last_offset = NULL;
564
565 for (;;) {
566 entry = (nfs41_readdir_entry*)entry_pos;
567 offset = (PULONG)dst_pos; /* ULONG NextEntryOffset */
568
569 dprintf(2, "filter %s looking at %s with cookie %d\n",
570 args->filter, entry->name, entry->cookie);
571 if (readdir_filter((const char*)args->filter, entry->name)) {
572 if (readdir_copy_entry(args, entry, &dst_pos, &dst_len)) {
573 eof = 0;
574 dprintf(2, "not enough space to copy entry %s (cookie %d)\n",
575 entry->name, entry->cookie);
576 break;
577 }
578 last_offset = offset;
579 status = NO_ERROR;
580 }
581 state->cookie.cookie = entry->cookie;
582
583 /* last entry we got from the server */
584 if (!entry->next_entry_offset)
585 break;
586
587 /* we found our single entry, but the server has more */
588 if (args->single && last_offset) {
589 eof = 0;
590 break;
591 }
592 entry_pos += entry->next_entry_offset;
593 }
594 args->query_reply_len = args->buf_len - dst_len;
595 if (last_offset) {
596 *last_offset = 0;
597 } else if (!eof) {
598 dprintf(1, "no entries matched; fetch more\n");
599 goto fetch_entries;
600 }
601 }
602
603 if (eof) {
604 dprintf(1, "we don't need to save a cookie\n");
605 goto out_free_cookie;
606 } else
607 dprintf(1, "saving cookie %llu\n", state->cookie.cookie);
608
609 out_free_entry:
610 free(entry_buf);
611 out:
612 dprintf(1, "<- handle_nfs41_dirquery(%s,%d,%d,%d) returning ",
613 args->filter, args->initial, args->restart, args->single);
614 if (status) {
615 switch (status) {
616 case ERROR_FILE_NOT_FOUND:
617 dprintf(1, "ERROR_FILE_NOT_FOUND.\n");
618 break;
619 case ERROR_NO_MORE_FILES:
620 dprintf(1, "ERROR_NO_MORE_FILES.\n");
621 break;
622 case ERROR_BUFFER_OVERFLOW:
623 upcall->last_error = status;
624 status = ERROR_SUCCESS;
625 break;
626 default:
627 dprintf(1, "error code %d.\n", status);
628 break;
629 }
630 } else {
631 dprintf(1, "success!\n");
632 }
633 return status;
634 out_free_cookie:
635 state->cookie.cookie = 0;
636 goto out_free_entry;
637 }
638
marshall_readdir(unsigned char * buffer,uint32_t * length,nfs41_upcall * upcall)639 static int marshall_readdir(unsigned char *buffer, uint32_t *length, nfs41_upcall *upcall)
640 {
641 int status;
642 readdir_upcall_args *args = &upcall->args.readdir;
643
644 status = safe_write(&buffer, length, &args->query_reply_len, sizeof(args->query_reply_len));
645 return status;
646 }
647
648
649 const nfs41_upcall_op nfs41_op_readdir = {
650 parse_readdir,
651 handle_readdir,
652 marshall_readdir
653 };
654