2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
10 #include <afs/param.h>
27 extern void afsi_log(char *pattern, ...);
30 int cm_enableServerLocks = 1;
32 int cm_followBackupPath = 0;
35 * Case-folding array. This was constructed by inspecting of SMBtrace output.
36 * I do not know anything more about it.
38 unsigned char cm_foldUpper[256] = {
39 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7,
40 0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf,
41 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
42 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
43 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
44 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
45 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
46 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
47 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
48 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
49 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
50 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
51 0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
52 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
53 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
54 0x58, 0x59, 0x5a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
55 0x80, 0x9a, 0x90, 0x41, 0x8e, 0x41, 0x8f, 0x80,
56 0x45, 0x45, 0x45, 0x49, 0x49, 0x49, 0x8e, 0x8f,
57 0x90, 0x92, 0x92, 0x4f, 0x99, 0x4f, 0x55, 0x55,
58 0x59, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
59 0x41, 0x49, 0x4f, 0x55, 0xa5, 0xa5, 0x56, 0xa7,
60 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
61 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
62 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
63 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
64 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
65 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
66 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
67 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
68 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
69 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
70 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff
74 * Case-insensitive string comparison. We used to use stricmp, but it doesn't
75 * know about 8-bit characters (e.g. 129 is lowercase u-umlaut, 154 is
76 * upper-case u-umlaut).
78 int cm_stricmp(const char *str1, const char *str2)
90 c1 = (char) cm_foldUpper[(unsigned char)(*str1++)];
91 c2 = (char) cm_foldUpper[(unsigned char)(*str2++)];
99 /* characters that are legal in an 8.3 name */
101 * We used to have 1's for all characters from 128 to 254. But
102 * the NT client behaves better if we create an 8.3 name for any
103 * name that has a character with the high bit on, and if we
104 * delete those characters from 8.3 names. In particular, see
105 * Sybase defect 10859.
107 char cm_LegalChars[256] = {
108 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
109 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
110 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0,
111 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
112 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
113 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1,
114 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
115 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1,
116 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
117 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
118 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
119 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
120 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
121 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
122 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
123 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
126 /* return true iff component is a valid 8.3 name */
127 int cm_Is8Dot3(char *namep)
134 * can't have a leading dot;
135 * special case for . and ..
137 if (namep[0] == '.') {
140 if (namep[1] == '.' && namep[2] == 0)
144 while (tc = *namep++) {
146 /* saw another dot */
147 if (sawDot) return 0; /* second dot */
152 if (cm_LegalChars[tc] == 0)
155 if (!sawDot && charCount > 8)
156 /* more than 8 chars in name */
158 if (sawDot && charCount > 3)
159 /* more than 3 chars in extension */
166 * Number unparsing map for generating 8.3 names;
167 * The version taken from DFS was on drugs.
168 * You can't include '&' and '@' in a file name.
170 char cm_8Dot3Mapping[42] =
171 {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
172 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K',
173 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U',
174 'V', 'W', 'X', 'Y', 'Z', '_', '-', '$', '#', '!', '+', '='
176 int cm_8Dot3MapSize = sizeof(cm_8Dot3Mapping);
178 void cm_Gen8Dot3NameInt(const char * longname, cm_dirFid_t * pfid,
179 char *shortName, char **shortNameEndp)
183 int vnode = ntohl(pfid->vnode);
185 int validExtension = 0;
189 /* Unparse the file's vnode number to get a "uniquifier" */
191 number[nsize] = cm_8Dot3Mapping[vnode % cm_8Dot3MapSize];
193 vnode /= cm_8Dot3MapSize;
197 * Look for valid extension. There has to be a dot, and
198 * at least one of the characters following has to be legal.
200 lastDot = strrchr(longname, '.');
202 temp = lastDot; temp++;
204 if (cm_LegalChars[tc])
210 /* Copy name characters */
211 for (i = 0, name = longname;
212 i < (7 - nsize) && name != lastDot; ) {
217 if (!cm_LegalChars[tc])
220 *shortName++ = toupper(tc);
226 /* Copy uniquifier characters */
227 memcpy(shortName, number, nsize);
230 if (validExtension) {
231 /* Copy extension characters */
232 *shortName++ = *lastDot++; /* copy dot */
233 for (i = 0, tc = *lastDot++;
236 if (cm_LegalChars[tc]) {
238 *shortName++ = toupper(tc);
247 *shortNameEndp = shortName;
250 /* return success if we can open this file in this mode */
251 long cm_CheckOpen(cm_scache_t *scp, int openMode, int trunc, cm_user_t *userp,
259 rights |= PRSFS_READ;
260 if (openMode == 1 || openMode == 2 || trunc)
261 rights |= PRSFS_WRITE;
263 lock_ObtainMutex(&scp->mx);
265 code = cm_SyncOp(scp, NULL, userp, reqp, rights,
266 CM_SCACHESYNC_GETSTATUS
267 | CM_SCACHESYNC_NEEDCALLBACK
268 | CM_SCACHESYNC_LOCK);
271 ((rights & PRSFS_WRITE) || (rights & PRSFS_READ)) &&
272 scp->fileType == CM_SCACHETYPE_FILE) {
275 unsigned int sLockType;
276 LARGE_INTEGER LOffset, LLength;
278 /* Check if there's some sort of lock on the file at the
281 key = cm_GenerateKey(CM_SESSION_CMINT,0,0);
283 if (rights & PRSFS_WRITE)
286 sLockType = LOCKING_ANDX_SHARED_LOCK;
288 LOffset.HighPart = CM_FLSHARE_OFFSET_HIGH;
289 LOffset.LowPart = CM_FLSHARE_OFFSET_LOW;
290 LLength.HighPart = CM_FLSHARE_LENGTH_HIGH;
291 LLength.LowPart = CM_FLSHARE_LENGTH_LOW;
293 code = cm_Lock(scp, sLockType, LOffset, LLength, key, 0, userp, reqp, NULL);
296 cm_Unlock(scp, sLockType, LOffset, LLength, key, userp, reqp);
298 /* In this case, we allow the file open to go through even
299 though we can't enforce mandatory locking on the
301 if (code == CM_ERROR_NOACCESS &&
302 !(rights & PRSFS_WRITE))
306 case CM_ERROR_ALLOFFLINE:
307 case CM_ERROR_ALLDOWN:
308 case CM_ERROR_ALLBUSY:
309 case CM_ERROR_TIMEDOUT:
311 case CM_ERROR_WOULDBLOCK:
314 code = CM_ERROR_SHARING_VIOLATION;
319 } else if (code != 0) {
323 cm_SyncOpDone(scp, NULL, CM_SCACHESYNC_LOCK);
327 lock_ReleaseMutex(&scp->mx);
332 /* return success if we can open this file in this mode */
333 long cm_CheckNTOpen(cm_scache_t *scp, unsigned int desiredAccess,
334 unsigned int createDisp, cm_user_t *userp, cm_req_t *reqp,
335 cm_lock_data_t **ldpp)
340 osi_assertx(ldpp != NULL, "null cm_lock_data_t");
343 /* Always allow delete; the RPC will tell us if it's OK */
344 if (desiredAccess == DELETE)
349 if (desiredAccess & AFS_ACCESS_READ)
350 rights |= (scp->fileType == CM_SCACHETYPE_DIRECTORY ? PRSFS_LOOKUP : PRSFS_READ);
352 /* We used to require PRSFS_WRITE if createDisp was 4
353 (OPEN_ALWAYS) even if AFS_ACCESS_WRITE was not requested.
354 However, we don't need to do that since the existence of the
355 scp implies that we don't need to create it. */
356 if (desiredAccess & AFS_ACCESS_WRITE)
357 rights |= PRSFS_WRITE;
359 lock_ObtainMutex(&scp->mx);
361 code = cm_SyncOp(scp, NULL, userp, reqp, rights,
362 CM_SCACHESYNC_GETSTATUS
363 | CM_SCACHESYNC_NEEDCALLBACK
364 | CM_SCACHESYNC_LOCK);
367 * If the open will fail because the volume is readonly, then we will
368 * return an access denied error instead. This is to help brain-dead
369 * apps run correctly on replicated volumes.
370 * See defect 10007 for more information.
372 if (code == CM_ERROR_READONLY)
373 code = CM_ERROR_NOACCESS;
376 ((rights & PRSFS_WRITE) || (rights & PRSFS_READ)) &&
377 scp->fileType == CM_SCACHETYPE_FILE) {
379 unsigned int sLockType;
380 LARGE_INTEGER LOffset, LLength;
382 /* Check if there's some sort of lock on the file at the
385 key = cm_GenerateKey(CM_SESSION_CMINT,0,0);
386 if (rights & PRSFS_WRITE)
389 sLockType = LOCKING_ANDX_SHARED_LOCK;
391 /* single byte lock at offset 0x0100 0000 0000 0000 */
392 LOffset.HighPart = CM_FLSHARE_OFFSET_HIGH;
393 LOffset.LowPart = CM_FLSHARE_OFFSET_LOW;
394 LLength.HighPart = CM_FLSHARE_LENGTH_HIGH;
395 LLength.LowPart = CM_FLSHARE_LENGTH_LOW;
397 code = cm_Lock(scp, sLockType, LOffset, LLength, key, 0, userp, reqp, NULL);
400 (*ldpp) = (cm_lock_data_t *)malloc(sizeof(cm_lock_data_t));
407 (*ldpp)->sLockType = sLockType;
408 (*ldpp)->LOffset.HighPart = LOffset.HighPart;
409 (*ldpp)->LOffset.LowPart = LOffset.LowPart;
410 (*ldpp)->LLength.HighPart = LLength.HighPart;
411 (*ldpp)->LLength.LowPart = LLength.LowPart;
413 /* In this case, we allow the file open to go through even
414 though we can't enforce mandatory locking on the
416 if (code == CM_ERROR_NOACCESS &&
417 !(rights & PRSFS_WRITE))
421 case CM_ERROR_ALLOFFLINE:
422 case CM_ERROR_ALLDOWN:
423 case CM_ERROR_ALLBUSY:
424 case CM_ERROR_TIMEDOUT:
426 case CM_ERROR_WOULDBLOCK:
429 code = CM_ERROR_SHARING_VIOLATION;
433 } else if (code != 0) {
437 cm_SyncOpDone(scp, NULL, CM_SCACHESYNC_LOCK);
440 lock_ReleaseMutex(&scp->mx);
445 extern long cm_CheckNTOpenDone(cm_scache_t *scp, cm_user_t *userp, cm_req_t *reqp,
446 cm_lock_data_t ** ldpp)
449 lock_ObtainMutex(&scp->mx);
450 cm_Unlock(scp, (*ldpp)->sLockType, (*ldpp)->LOffset, (*ldpp)->LLength,
451 (*ldpp)->key, userp, reqp);
452 lock_ReleaseMutex(&scp->mx);
459 * When CAP_NT_SMBS has been negotiated, deletion (of files or directories) is
460 * done in three steps:
461 * (1) open for deletion (NT_CREATE_AND_X)
462 * (2) set for deletion on close (NT_TRANSACTION2, SET_FILE_INFO)
464 * We must not do the RPC until step 3. But if we are going to return an error
465 * code (e.g. directory not empty), we must return it by step 2, otherwise most
466 * clients will not notice it. So we do a preliminary check. For deleting
467 * files, this is almost free, since we have already done the RPC to get the
468 * parent directory's status bits. But for deleting directories, we must do an
469 * additional RPC to get the directory's data to check if it is empty. Sigh.
471 long cm_CheckNTDelete(cm_scache_t *dscp, cm_scache_t *scp, cm_user_t *userp,
477 cm_dirEntry_t *dep = 0;
478 unsigned short *hashTable;
480 int BeyondPage = 0, HaveDot = 0, HaveDotDot = 0;
482 /* First check permissions */
483 lock_ObtainMutex(&scp->mx);
484 code = cm_SyncOp(scp, NULL, userp, reqp, PRSFS_DELETE,
485 CM_SCACHESYNC_GETSTATUS | CM_SCACHESYNC_NEEDCALLBACK);
486 cm_SyncOpDone(scp, NULL, CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS);
487 lock_ReleaseMutex(&scp->mx);
491 /* If deleting directory, must be empty */
493 if (scp->fileType != CM_SCACHETYPE_DIRECTORY)
496 thyper.HighPart = 0; thyper.LowPart = 0;
497 lock_ObtainRead(&scp->bufCreateLock);
498 code = buf_Get(scp, &thyper, &bufferp);
499 lock_ReleaseRead(&scp->bufCreateLock);
503 lock_ObtainMutex(&bufferp->mx);
504 lock_ObtainMutex(&scp->mx);
506 code = cm_SyncOp(scp, bufferp, userp, reqp, 0,
507 CM_SCACHESYNC_NEEDCALLBACK
509 | CM_SCACHESYNC_BUFLOCKED);
513 if (cm_HaveBuffer(scp, bufferp, 1))
516 /* otherwise, load the buffer and try again */
517 lock_ReleaseMutex(&bufferp->mx);
518 code = cm_GetBuffer(scp, bufferp, NULL, userp, reqp);
519 lock_ReleaseMutex(&scp->mx);
520 lock_ObtainMutex(&bufferp->mx);
521 lock_ObtainMutex(&scp->mx);
522 cm_SyncOpDone(scp, bufferp, CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_READ | CM_SCACHESYNC_BUFLOCKED);
527 /* We try to determine emptiness without looking beyond the first page,
528 * and without assuming "." and ".." are present and are on the first
529 * page (though these assumptions might, after all, be reasonable).
531 hashTable = (unsigned short *)(bufferp->datap + (32 * 5));
532 for (i=0; i<128; i++) {
533 idx = ntohs(hashTable[i]);
539 dep = (cm_dirEntry_t *)(bufferp->datap + (32 * idx));
540 if (strcmp(dep->name, ".") == 0)
542 else if (strcmp(dep->name, "..") == 0)
545 code = CM_ERROR_NOTEMPTY;
548 idx = ntohs(dep->next);
551 if (BeyondPage && HaveDot && HaveDotDot)
552 code = CM_ERROR_NOTEMPTY;
556 lock_ReleaseMutex(&bufferp->mx);
557 buf_Release(bufferp);
558 lock_ReleaseMutex(&scp->mx);
563 * Iterate through all entries in a directory.
564 * When the function funcp is called, the buffer is locked but the
565 * directory vnode is not.
567 * If the retscp parameter is not NULL, the parmp must be a
568 * cm_lookupSearch_t object.
570 long cm_ApplyDir(cm_scache_t *scp, cm_DirFuncp_t funcp, void *parmp,
571 osi_hyper_t *startOffsetp, cm_user_t *userp, cm_req_t *reqp,
572 cm_scache_t **retscp)
576 cm_dirEntry_t *dep = 0;
579 osi_hyper_t dirLength;
580 osi_hyper_t bufferOffset;
581 osi_hyper_t curOffset;
585 cm_pageHeader_t *pageHeaderp;
587 long nextEntryCookie;
588 int numDirChunks; /* # of 32 byte dir chunks in this entry */
590 /* get the directory size */
591 lock_ObtainMutex(&scp->mx);
592 code = cm_SyncOp(scp, NULL, userp, reqp, PRSFS_LOOKUP,
593 CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS);
594 lock_ReleaseMutex(&scp->mx);
598 if (scp->fileType != CM_SCACHETYPE_DIRECTORY)
599 return CM_ERROR_NOTDIR;
601 if (retscp) /* if this is a lookup call */
603 cm_lookupSearch_t* sp = parmp;
606 #ifdef AFS_FREELANCE_CLIENT
607 /* Freelance entries never end up in the DNLC because they
608 * do not have an associated cm_server_t
610 !(cm_freelanceEnabled &&
611 sp->fid.cell==AFS_FAKE_ROOT_CELL_ID &&
612 sp->fid.volume==AFS_FAKE_ROOT_VOL_ID )
613 #else /* !AFS_FREELANCE_CLIENT */
618 int casefold = sp->caseFold;
619 sp->caseFold = 0; /* we have a strong preference for exact matches */
620 if ( *retscp = cm_dnlcLookup(scp, sp)) /* dnlc hit */
622 sp->caseFold = casefold;
625 sp->caseFold = casefold;
627 /* see if we can find it using the directory hash tables.
628 we can only do exact matches, since the hash is case
638 code = cm_BeginDirOp(scp, userp, reqp, CM_DIRLOCK_READ, &dirop);
642 code = cm_BPlusDirLookup(&dirop, sp->searchNamep, &sp->fid);
647 code = cm_DirLookup(&dirop, sp->searchNamep, &sp->fid);
655 sp->ExactFound = TRUE;
656 *retscp = NULL; /* force caller to call cm_GetSCache() */
661 if (sp->caseFold && code == CM_ERROR_INEXACT_MATCH) {
664 sp->ExactFound = FALSE;
665 *retscp = NULL; /* force caller to call cm_GetSCache() */
669 return CM_ERROR_BPLUS_NOMATCH;
677 * XXX We only get the length once. It might change when we drop the
680 dirLength = scp->length;
683 bufferOffset.LowPart = bufferOffset.HighPart = 0;
685 curOffset = *startOffsetp;
687 curOffset.HighPart = 0;
688 curOffset.LowPart = 0;
692 /* make sure that curOffset.LowPart doesn't point to the first
693 * 32 bytes in the 2nd through last dir page, and that it
694 * doesn't point at the first 13 32-byte chunks in the first
695 * dir page, since those are dir and page headers, and don't
696 * contain useful information.
698 temp = curOffset.LowPart & (2048-1);
699 if (curOffset.HighPart == 0 && curOffset.LowPart < 2048) {
700 /* we're in the first page */
701 if (temp < 13*32) temp = 13*32;
704 /* we're in a later dir page */
705 if (temp < 32) temp = 32;
708 /* make sure the low order 5 bits are zero */
711 /* now put temp bits back ito curOffset.LowPart */
712 curOffset.LowPart &= ~(2048-1);
713 curOffset.LowPart |= temp;
715 /* check if we've passed the dir's EOF */
716 if (LargeIntegerGreaterThanOrEqualTo(curOffset, dirLength))
719 /* see if we can use the bufferp we have now; compute in which
720 * page the current offset would be, and check whether that's
721 * the offset of the buffer we have. If not, get the buffer.
723 thyper.HighPart = curOffset.HighPart;
724 thyper.LowPart = curOffset.LowPart & ~(cm_data.buf_blockSize-1);
725 if (!bufferp || !LargeIntegerEqualTo(thyper, bufferOffset)) {
728 lock_ReleaseMutex(&bufferp->mx);
729 buf_Release(bufferp);
733 lock_ObtainRead(&scp->bufCreateLock);
734 code = buf_Get(scp, &thyper, &bufferp);
735 lock_ReleaseRead(&scp->bufCreateLock);
737 /* if buf_Get() fails we do not have a buffer object to lock */
743 /* for the IFS version, we bulkstat the dirents because this
744 routine is used in place of smb_ReceiveCoreSearchDir. our
745 other option is to modify smb_ReceiveCoreSearchDir itself,
746 but this seems to be the proper use for cm_ApplyDir. */
747 lock_ObtainMutex(&scp->mx);
748 if ((scp->flags & CM_SCACHEFLAG_BULKSTATTING) == 0
749 && (scp->bulkStatProgress.QuadPart <= thyper.QuadPart))
751 scp->flags |= CM_SCACHEFLAG_BULKSTATTING;
752 code = cm_TryBulkStat(scp, &thyper, userp, reqp);
753 scp->flags &= ~CM_SCACHEFLAG_BULKSTATTING;
754 scp->bulkStatProgress = thyper;
756 lock_ReleaseMutex(&scp->mx);
759 lock_ObtainMutex(&bufferp->mx);
760 bufferOffset = thyper;
762 /* now get the data in the cache */
764 lock_ObtainMutex(&scp->mx);
765 code = cm_SyncOp(scp, bufferp, userp, reqp,
767 CM_SCACHESYNC_NEEDCALLBACK
769 | CM_SCACHESYNC_BUFLOCKED);
771 lock_ReleaseMutex(&scp->mx);
774 cm_SyncOpDone(scp, bufferp, CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_READ | CM_SCACHESYNC_BUFLOCKED);
776 if (cm_HaveBuffer(scp, bufferp, 1)) {
777 lock_ReleaseMutex(&scp->mx);
781 /* otherwise, load the buffer and try again */
782 lock_ReleaseMutex(&bufferp->mx);
783 code = cm_GetBuffer(scp, bufferp, NULL, userp,
785 lock_ReleaseMutex(&scp->mx);
786 lock_ObtainMutex(&bufferp->mx);
791 lock_ReleaseMutex(&bufferp->mx);
792 buf_Release(bufferp);
796 } /* if (wrong buffer) ... */
798 /* now we have the buffer containing the entry we're interested
799 * in; copy it out if it represents a non-deleted entry.
801 entryInDir = curOffset.LowPart & (2048-1);
802 entryInBuffer = curOffset.LowPart & (cm_data.buf_blockSize - 1);
804 /* page header will help tell us which entries are free. Page
805 * header can change more often than once per buffer, since
806 * AFS 3 dir page size may be less than (but not more than) a
807 * buffer package buffer.
809 /* only look intra-buffer */
810 temp = curOffset.LowPart & (cm_data.buf_blockSize - 1);
811 temp &= ~(2048 - 1); /* turn off intra-page bits */
812 pageHeaderp = (cm_pageHeader_t *) (bufferp->datap + temp);
814 /* now determine which entry we're looking at in the page. If
815 * it is free (there's a free bitmap at the start of the dir),
816 * we should skip these 32 bytes.
818 slotInPage = (entryInDir & 0x7e0) >> 5;
819 if (!(pageHeaderp->freeBitmap[slotInPage>>3]
820 & (1 << (slotInPage & 0x7)))) {
821 /* this entry is free */
822 numDirChunks = 1; /* only skip this guy */
826 tp = bufferp->datap + entryInBuffer;
827 dep = (cm_dirEntry_t *) tp; /* now points to AFS3 dir entry */
829 /* while we're here, compute the next entry's location, too,
830 * since we'll need it when writing out the cookie into the
831 * dir listing stream.
833 numDirChunks = cm_NameEntries(dep->name, NULL);
835 /* compute the offset of the cookie representing the next entry */
836 nextEntryCookie = curOffset.LowPart
837 + (CM_DIR_CHUNKSIZE * numDirChunks);
839 if (dep->fid.vnode != 0) {
840 /* this is one of the entries to use: it is not deleted */
841 code = (*funcp)(scp, dep, parmp, &curOffset);
844 } /* if we're including this name */
847 /* and adjust curOffset to be where the new cookie is */
849 thyper.LowPart = CM_DIR_CHUNKSIZE * numDirChunks;
850 curOffset = LargeIntegerAdd(thyper, curOffset);
851 } /* while copying data for dir listing */
853 /* release the mutex */
855 lock_ReleaseMutex(&bufferp->mx);
856 buf_Release(bufferp);
861 int cm_NoneUpper(char *s)
865 if (c >= 'A' && c <= 'Z')
870 int cm_NoneLower(char *s)
874 if (c >= 'a' && c <= 'z')
879 long cm_LookupSearchProc(cm_scache_t *scp, cm_dirEntry_t *dep, void *rockp,
882 cm_lookupSearch_t *sp;
887 sp = (cm_lookupSearch_t *) rockp;
889 matchName = dep->name;
891 match = cm_stricmp(matchName, sp->searchNamep);
893 match = strcmp(matchName, sp->searchNamep);
897 && !cm_Is8Dot3(dep->name)) {
898 matchName = shortName;
899 cm_Gen8Dot3Name(dep, shortName, NULL);
901 match = cm_stricmp(matchName, sp->searchNamep);
903 match = strcmp(matchName, sp->searchNamep);
913 if (!sp->caseFold || matchName == shortName) {
914 sp->fid.vnode = ntohl(dep->fid.vnode);
915 sp->fid.unique = ntohl(dep->fid.unique);
916 return CM_ERROR_STOPNOW;
920 * If we get here, we are doing a case-insensitive search, and we
921 * have found a match. Now we determine what kind of match it is:
922 * exact, lower-case, upper-case, or none of the above. This is done
923 * in order to choose among matches, if there are more than one.
926 /* Exact matches are the best. */
927 match = strcmp(matchName, sp->searchNamep);
930 sp->fid.vnode = ntohl(dep->fid.vnode);
931 sp->fid.unique = ntohl(dep->fid.unique);
932 return CM_ERROR_STOPNOW;
935 /* Lower-case matches are next. */
938 if (cm_NoneUpper(matchName)) {
943 /* Upper-case matches are next. */
946 if (cm_NoneLower(matchName)) {
951 /* General matches are last. */
957 sp->fid.vnode = ntohl(dep->fid.vnode);
958 sp->fid.unique = ntohl(dep->fid.unique);
962 /* read the contents of a mount point into the appropriate string.
963 * called with locked scp, and returns with locked scp.
965 long cm_ReadMountPoint(cm_scache_t *scp, cm_user_t *userp, cm_req_t *reqp)
972 if (scp->mountPointStringp[0])
975 /* otherwise, we have to read it in */
976 lock_ReleaseMutex(&scp->mx);
978 lock_ObtainRead(&scp->bufCreateLock);
979 thyper.LowPart = thyper.HighPart = 0;
980 code = buf_Get(scp, &thyper, &bufp);
981 lock_ReleaseRead(&scp->bufCreateLock);
983 lock_ObtainMutex(&scp->mx);
988 code = cm_SyncOp(scp, bufp, userp, reqp, 0,
989 CM_SCACHESYNC_READ | CM_SCACHESYNC_NEEDCALLBACK);
993 cm_SyncOpDone(scp, bufp, CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_READ);
995 if (cm_HaveBuffer(scp, bufp, 0))
998 /* otherwise load buffer */
999 code = cm_GetBuffer(scp, bufp, NULL, userp, reqp);
1003 /* locked, has callback, has valid data in buffer */
1004 if ((tlen = scp->length.LowPart) > MOUNTPOINTLEN - 1)
1005 return CM_ERROR_TOOBIG;
1007 code = CM_ERROR_INVAL;
1011 /* someone else did the work while we were out */
1012 if (scp->mountPointStringp[0]) {
1017 /* otherwise, copy out the link */
1018 memcpy(scp->mountPointStringp, bufp->datap, tlen);
1020 /* now make it null-terminated. Note that the original contents of a
1021 * link that is a mount point is "#volname." where "." is there just to
1022 * be turned into a null. That is, we can trash the last char of the
1023 * link without damaging the vol name. This is a stupid convention,
1024 * but that's the protocol.
1026 scp->mountPointStringp[tlen-1] = 0;
1036 /* called with a locked scp and chases the mount point, yielding outScpp.
1037 * scp remains locked, just for simplicity of describing the interface.
1039 long cm_FollowMountPoint(cm_scache_t *scp, cm_scache_t *dscp, cm_user_t *userp,
1040 cm_req_t *reqp, cm_scache_t **outScpp)
1048 cm_volume_t *volp = NULL;
1055 if (scp->mountRootFid.cell != 0 && scp->mountRootGen >= cm_data.mountRootGen) {
1056 tfid = scp->mountRootFid;
1057 lock_ReleaseMutex(&scp->mx);
1058 code = cm_GetSCache(&tfid, outScpp, userp, reqp);
1059 lock_ObtainMutex(&scp->mx);
1063 /* parse the volume name */
1064 mpNamep = scp->mountPointStringp;
1066 return CM_ERROR_NOSUCHPATH;
1067 tlen = (int)strlen(scp->mountPointStringp);
1068 mtType = *scp->mountPointStringp;
1069 cellNamep = malloc(tlen);
1070 volNamep = malloc(tlen);
1072 cp = strrchr(mpNamep, ':');
1074 /* cellular mount point */
1075 memset(cellNamep, 0, tlen);
1076 strncpy(cellNamep, mpNamep+1, cp - mpNamep - 1);
1077 strcpy(volNamep, cp+1);
1078 /* now look up the cell */
1079 lock_ReleaseMutex(&scp->mx);
1080 cellp = cm_GetCell(cellNamep, CM_FLAG_CREATE);
1081 lock_ObtainMutex(&scp->mx);
1085 strcpy(volNamep, mpNamep+1);
1087 cellp = cm_FindCellByID(scp->fid.cell);
1091 code = CM_ERROR_NOSUCHCELL;
1095 vnLength = strlen(volNamep);
1096 if (vnLength >= 8 && strcmp(volNamep + vnLength - 7, ".backup") == 0)
1097 targetType = BACKVOL;
1098 else if (vnLength >= 10
1099 && strcmp(volNamep + vnLength - 9, ".readonly") == 0)
1104 /* check for backups within backups */
1105 if (targetType == BACKVOL
1106 && (scp->flags & (CM_SCACHEFLAG_RO | CM_SCACHEFLAG_PURERO))
1107 == CM_SCACHEFLAG_RO) {
1108 code = CM_ERROR_NOSUCHVOLUME;
1112 /* now we need to get the volume */
1113 lock_ReleaseMutex(&scp->mx);
1114 if (cm_VolNameIsID(volNamep)) {
1115 code = cm_GetVolumeByID(cellp, atoi(volNamep), userp, reqp,
1116 CM_GETVOL_FLAG_CREATE, &volp);
1118 code = cm_GetVolumeByName(cellp, volNamep, userp, reqp,
1119 CM_GETVOL_FLAG_CREATE, &volp);
1121 lock_ObtainMutex(&scp->mx);
1124 /* save the parent of the volume root for this is the
1125 * place where the volume is mounted and we must remember
1126 * this in the volume structure rather than just in the
1127 * scache entry lest the scache entry gets recycled
1130 lock_ObtainMutex(&volp->mx);
1131 volp->dotdotFid = dscp->fid;
1132 lock_ReleaseMutex(&volp->mx);
1134 scp->mountRootFid.cell = cellp->cellID;
1136 /* if the mt pt originates in a .backup volume (not a .readonly)
1137 * and FollowBackupPath is active, and if there is a .backup
1138 * volume for the target, then use the .backup of the target
1139 * instead of the read-write.
1141 if (cm_followBackupPath && targetType == RWVOL &&
1142 (scp->flags & CM_SCACHEFLAG_RO|CM_SCACHEFLAG_PURERO) == CM_SCACHEFLAG_RO &&
1144 targetType = BACKVOL;
1146 /* if the mt pt is in a read-only volume (not just a
1147 * backup), and if there is a read-only volume for the
1148 * target, and if this is a targetType '#' mount point, use
1149 * the read-only, otherwise use the one specified.
1151 else if (mtType == '#' && targetType == RWVOL &&
1152 (scp->flags & CM_SCACHEFLAG_PURERO) &&
1156 if (targetType == ROVOL)
1157 scp->mountRootFid.volume = volp->ro.ID;
1158 else if (targetType == BACKVOL)
1159 scp->mountRootFid.volume = volp->bk.ID;
1161 scp->mountRootFid.volume = volp->rw.ID;
1163 /* the rest of the fid is a magic number */
1164 scp->mountRootFid.vnode = 1;
1165 scp->mountRootFid.unique = 1;
1166 scp->mountRootGen = cm_data.mountRootGen;
1168 tfid = scp->mountRootFid;
1169 lock_ReleaseMutex(&scp->mx);
1170 code = cm_GetSCache(&tfid, outScpp, userp, reqp);
1171 lock_ObtainMutex(&scp->mx);
1182 long cm_LookupInternal(cm_scache_t *dscp, char *namep, long flags, cm_user_t *userp,
1183 cm_req_t *reqp, cm_scache_t **outpScpp)
1186 int dnlcHit = 1; /* did we hit in the dnlc? yes, we did */
1187 cm_scache_t *tscp = NULL;
1188 cm_scache_t *mountedScp;
1189 cm_lookupSearch_t rock;
1192 memset(&rock, 0, sizeof(rock));
1194 if (dscp->fid.vnode == 1 && dscp->fid.unique == 1
1195 && strcmp(namep, "..") == 0) {
1196 if (dscp->dotdotFid.volume == 0)
1197 return CM_ERROR_NOSUCHVOLUME;
1198 rock.fid = dscp->dotdotFid;
1200 } else if (strcmp(namep, ".") == 0) {
1201 rock.fid = dscp->fid;
1205 if (flags & CM_FLAG_NOMOUNTCHASE) {
1206 /* In this case, we should go and call cm_Dir* functions
1207 directly since the following cm_ApplyDir() function will
1215 code = cm_BeginDirOp(dscp, userp, reqp, CM_DIRLOCK_READ, &dirop);
1218 code = cm_BPlusDirLookup(&dirop, namep, &rock.fid);
1223 code = cm_DirLookup(&dirop, namep, &rock.fid);
1225 cm_EndDirOp(&dirop);
1235 if (code == CM_ERROR_INEXACT_MATCH && (flags & CM_FLAG_CASEFOLD)) {
1242 return CM_ERROR_BPLUS_NOMATCH;
1247 rock.fid.cell = dscp->fid.cell;
1248 rock.fid.volume = dscp->fid.volume;
1249 rock.searchNamep = namep;
1250 rock.caseFold = (flags & CM_FLAG_CASEFOLD);
1251 rock.hasTilde = ((strchr(namep, '~') != NULL) ? 1 : 0);
1253 /* If NOMOUNTCHASE, bypass DNLC by passing NULL scp pointer */
1254 code = cm_ApplyDir(dscp, cm_LookupSearchProc, &rock, NULL, userp, reqp,
1255 (flags & CM_FLAG_NOMOUNTCHASE) ? NULL : &tscp);
1257 /* code == 0 means we fell off the end of the dir, while stopnow means
1258 * that we stopped early, probably because we found the entry we're
1259 * looking for. Any other non-zero code is an error.
1261 if (code && code != CM_ERROR_STOPNOW) {
1262 /* if the cm_scache_t we are searching in is not a directory
1263 * we must return path not found because the error
1264 * is to describe the final component not an intermediary
1266 if (code == CM_ERROR_NOTDIR) {
1267 if (flags & CM_FLAG_CHECKPATH)
1268 return CM_ERROR_NOSUCHPATH;
1270 return CM_ERROR_NOSUCHFILE;
1275 getroot = (dscp==cm_data.rootSCachep) ;
1277 if (!cm_freelanceEnabled || !getroot) {
1278 if (flags & CM_FLAG_CHECKPATH)
1279 return CM_ERROR_NOSUCHPATH;
1281 return CM_ERROR_NOSUCHFILE;
1283 else { /* nonexistent dir on freelance root, so add it */
1284 char fullname[200] = ".";
1287 osi_Log1(afsd_logp,"cm_Lookup adding mount for non-existent directory: %s",
1288 osi_LogSaveString(afsd_logp,namep));
1289 if (namep[0] == '.') {
1290 if (cm_GetCell_Gen(&namep[1], &fullname[1], CM_FLAG_CREATE)) {
1292 if ( stricmp(&namep[1], &fullname[1]) )
1293 code = cm_FreelanceAddSymlink(namep, fullname, &rock.fid);
1295 code = cm_FreelanceAddMount(namep, &fullname[1], "root.cell.", 1, &rock.fid);
1298 if (cm_GetCell_Gen(namep, fullname, CM_FLAG_CREATE)) {
1300 if ( stricmp(namep, fullname) )
1301 code = cm_FreelanceAddSymlink(namep, fullname, &rock.fid);
1303 code = cm_FreelanceAddMount(namep, fullname, "root.cell.", 0, &rock.fid);
1306 if (!found || code < 0) { /* add mount point failed, so give up */
1307 if (flags & CM_FLAG_CHECKPATH)
1308 return CM_ERROR_NOSUCHPATH;
1310 return CM_ERROR_NOSUCHFILE;
1312 tscp = NULL; /* to force call of cm_GetSCache */
1317 if ( !tscp ) /* we did not find it in the dnlc */
1320 code = cm_GetSCache(&rock.fid, &tscp, userp, reqp);
1324 /* tscp is now held */
1326 lock_ObtainMutex(&tscp->mx);
1327 code = cm_SyncOp(tscp, NULL, userp, reqp, 0,
1328 CM_SCACHESYNC_GETSTATUS | CM_SCACHESYNC_NEEDCALLBACK);
1330 lock_ReleaseMutex(&tscp->mx);
1331 cm_ReleaseSCache(tscp);
1334 cm_SyncOpDone(tscp, NULL, CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS);
1335 /* tscp is now locked */
1337 if (!(flags & CM_FLAG_NOMOUNTCHASE)
1338 && tscp->fileType == CM_SCACHETYPE_MOUNTPOINT) {
1339 /* mount points are funny: they have a volume name to mount
1342 code = cm_ReadMountPoint(tscp, userp, reqp);
1344 code = cm_FollowMountPoint(tscp, dscp, userp, reqp,
1346 lock_ReleaseMutex(&tscp->mx);
1347 cm_ReleaseSCache(tscp);
1354 lock_ReleaseMutex(&tscp->mx);
1357 /* copy back pointer */
1360 /* insert scache in dnlc */
1361 if ( !dnlcHit && !(flags & CM_FLAG_NOMOUNTCHASE) && rock.ExactFound ) {
1362 /* lock the directory entry to prevent racing callback revokes */
1363 lock_ObtainMutex(&dscp->mx);
1364 if ( dscp->cbServerp != NULL && dscp->cbExpires > 0 )
1365 cm_dnlcEnter(dscp, namep, tscp);
1366 lock_ReleaseMutex(&dscp->mx);
1373 int cm_ExpandSysName(char *inp, char *outp, long outSize, unsigned int index)
1378 tp = strrchr(inp, '@');
1380 return 0; /* no @sys */
1382 if (strcmp(tp, "@sys") != 0)
1383 return 0; /* no @sys */
1385 /* caller just wants to know if this is a valid @sys type of name */
1389 if (index >= MAXNUMSYSNAMES)
1392 /* otherwise generate the properly expanded @sys name */
1393 prefixCount = (int)(tp - inp);
1395 strncpy(outp, inp, prefixCount); /* copy out "a." from "a.@sys" */
1396 outp[prefixCount] = 0; /* null terminate the "a." */
1397 strcat(outp, cm_sysNameList[index]);/* append i386_nt40 */
1401 long cm_EvaluateVolumeReference(char * namep, long flags, cm_user_t * userp,
1402 cm_req_t *reqp, cm_scache_t ** outpScpp)
1405 char cellName[CELL_MAXNAMELEN];
1406 char volumeName[VL_MAXNAMELEN];
1411 cm_cell_t * cellp = NULL;
1412 cm_volume_t * volp = NULL;
1415 int mountType = RWVOL;
1417 osi_Log1(afsd_logp, "cm_EvaluateVolumeReference for string [%s]",
1418 osi_LogSaveString(afsd_logp, namep));
1420 if (strnicmp(namep, CM_PREFIX_VOL, CM_PREFIX_VOL_CCH) != 0) {
1421 goto _exit_invalid_path;
1424 /* namep is assumed to look like the following:
1426 @vol:<cellname>%<volume>\0
1428 @vol:<cellname>#<volume>\0
1432 cp = namep + CM_PREFIX_VOL_CCH; /* cp points to cell name, hopefully */
1433 tp = strchr(cp, '%');
1435 tp = strchr(cp, '#');
1437 (len = tp - cp) == 0 ||
1438 len > CELL_MAXNAMELEN)
1439 goto _exit_invalid_path;
1440 strncpy(cellName, cp, len);
1441 cellName[len] = '\0';
1446 cp = tp+1; /* cp now points to volume, supposedly */
1447 strncpy(volumeName, cp, VL_MAXNAMELEN-1);
1448 volumeName[VL_MAXNAMELEN - 1] = 0;
1450 /* OK, now we have the cell and the volume */
1451 osi_Log2(afsd_logp, " Found cell [%s] and volume [%s]",
1452 osi_LogSaveString(afsd_logp, cellName),
1453 osi_LogSaveString(afsd_logp, volumeName));
1455 cellp = cm_GetCell(cellName, CM_FLAG_CREATE);
1456 if (cellp == NULL) {
1457 goto _exit_invalid_path;
1460 len = strlen(volumeName);
1461 if (len >= 8 && strcmp(volumeName + len - 7, ".backup") == 0)
1463 else if (len >= 10 &&
1464 strcmp(volumeName + len - 9, ".readonly") == 0)
1469 if (cm_VolNameIsID(volumeName)) {
1470 code = cm_GetVolumeByID(cellp, atoi(volumeName), userp, reqp,
1471 CM_GETVOL_FLAG_CREATE, &volp);
1473 code = cm_GetVolumeByName(cellp, volumeName, userp, reqp,
1474 CM_GETVOL_FLAG_CREATE, &volp);
1480 fid.cell = cellp->cellID;
1482 if (volType == BACKVOL)
1483 fid.volume = volp->bk.ID;
1484 else if (volType == ROVOL ||
1485 (volType == RWVOL && mountType == ROVOL && volp->ro.ID != 0))
1486 fid.volume = volp->ro.ID;
1488 fid.volume = volp->rw.ID;
1493 code = cm_GetSCache(&fid, outpScpp, userp, reqp);
1503 if (flags & CM_FLAG_CHECKPATH)
1504 return CM_ERROR_NOSUCHPATH;
1506 return CM_ERROR_NOSUCHFILE;
1509 #ifdef DEBUG_REFCOUNT
1510 long cm_LookupDbg(cm_scache_t *dscp, char *namep, long flags, cm_user_t *userp,
1511 cm_req_t *reqp, cm_scache_t **outpScpp, char * file, long line)
1513 long cm_Lookup(cm_scache_t *dscp, char *namep, long flags, cm_user_t *userp,
1514 cm_req_t *reqp, cm_scache_t **outpScpp)
1518 char tname[AFSPATHMAX];
1519 int sysNameIndex = 0;
1520 cm_scache_t *scp = NULL;
1522 #ifdef DEBUG_REFCOUNT
1523 afsi_log("%s:%d cm_Lookup dscp 0x%p ref %d", file, line, dscp, dscp->refCount, file, line);
1524 osi_Log2(afsd_logp, "cm_Lookup dscp 0x%p ref %d", dscp, dscp->refCount);
1527 if ( stricmp(namep,SMB_IOCTL_FILENAME_NOSLASH) == 0 ) {
1528 if (flags & CM_FLAG_CHECKPATH)
1529 return CM_ERROR_NOSUCHPATH;
1531 return CM_ERROR_NOSUCHFILE;
1534 if (dscp == cm_data.rootSCachep &&
1535 strnicmp(namep, CM_PREFIX_VOL, CM_PREFIX_VOL_CCH) == 0) {
1536 return cm_EvaluateVolumeReference(namep, flags, userp, reqp, outpScpp);
1539 if (cm_ExpandSysName(namep, NULL, 0, 0) > 0) {
1540 for ( sysNameIndex = 0; sysNameIndex < MAXNUMSYSNAMES; sysNameIndex++) {
1541 code = cm_ExpandSysName(namep, tname, sizeof(tname), sysNameIndex);
1543 code = cm_LookupInternal(dscp, tname, flags, userp, reqp, &scp);
1544 #ifdef DEBUG_REFCOUNT
1545 afsi_log("%s:%d cm_LookupInternal (1) code 0x%x dscp 0x%p ref %d scp 0x%p ref %d", file, line, code, dscp, dscp->refCount, scp, scp ? scp->refCount : 0);
1546 osi_Log3(afsd_logp, "cm_LookupInternal (1) code 0x%x dscp 0x%p scp 0x%p", code, dscp, scp);
1554 cm_ReleaseSCache(scp);
1558 code = cm_LookupInternal(dscp, namep, flags, userp, reqp, &scp);
1559 #ifdef DEBUG_REFCOUNT
1560 afsi_log("%s:%d cm_LookupInternal (2) code 0x%x dscp 0x%p ref %d scp 0x%p ref %d", file, line, code, dscp, dscp->refCount, scp, scp ? scp->refCount : 0);
1561 osi_Log3(afsd_logp, "cm_LookupInternal (2) code 0x%x dscp 0x%p scp 0x%p", code, dscp, scp);
1568 code = cm_LookupInternal(dscp, namep, flags, userp, reqp, &scp);
1569 #ifdef DEBUG_REFCOUNT
1570 afsi_log("%s:%d cm_LookupInternal (2) code 0x%x dscp 0x%p ref %d scp 0x%p ref %d", file, line, code, dscp, dscp->refCount, scp, scp ? scp->refCount : 0);
1571 osi_Log3(afsd_logp, "cm_LookupInternal (2) code 0x%x dscp 0x%p scp 0x%p", code, dscp, scp);
1577 /* None of the possible sysName expansions could be found */
1578 if (flags & CM_FLAG_CHECKPATH)
1579 return CM_ERROR_NOSUCHPATH;
1581 return CM_ERROR_NOSUCHFILE;
1584 long cm_Unlink(cm_scache_t *dscp, char *namep, cm_user_t *userp, cm_req_t *reqp)
1590 AFSFetchStatus newDirStatus;
1592 struct rx_connection * callp;
1595 #ifdef AFS_FREELANCE_CLIENT
1596 if (cm_freelanceEnabled && dscp == cm_data.rootSCachep) {
1597 /* deleting a mount point from the root dir. */
1598 code = cm_FreelanceRemoveMount(namep);
1603 /* make sure we don't screw up the dir status during the merge */
1604 code = cm_BeginDirOp(dscp, userp, reqp, CM_DIRLOCK_NONE, &dirop);
1606 lock_ObtainMutex(&dscp->mx);
1607 sflags = CM_SCACHESYNC_STOREDATA;
1608 code = cm_SyncOp(dscp, NULL, userp, reqp, 0, sflags);
1609 lock_ReleaseMutex(&dscp->mx);
1611 cm_EndDirOp(&dirop);
1616 afsFid.Volume = dscp->fid.volume;
1617 afsFid.Vnode = dscp->fid.vnode;
1618 afsFid.Unique = dscp->fid.unique;
1620 osi_Log1(afsd_logp, "CALL RemoveFile scp 0x%p", dscp);
1622 code = cm_ConnFromFID(&dscp->fid, userp, reqp, &connp);
1626 callp = cm_GetRxConn(connp);
1627 code = RXAFS_RemoveFile(callp, &afsFid, namep,
1628 &newDirStatus, &volSync);
1629 rx_PutConnection(callp);
1631 } while (cm_Analyze(connp, userp, reqp, &dscp->fid, &volSync, NULL, NULL, code));
1632 code = cm_MapRPCError(code, reqp);
1635 osi_Log1(afsd_logp, "CALL RemoveFile FAILURE, code 0x%x", code);
1637 osi_Log0(afsd_logp, "CALL RemoveFile SUCCESS");
1640 lock_ObtainWrite(&dirop.scp->dirlock);
1641 dirop.lockType = CM_DIRLOCK_WRITE;
1643 lock_ObtainMutex(&dscp->mx);
1644 cm_dnlcRemove(dscp, namep);
1645 cm_SyncOpDone(dscp, NULL, sflags);
1647 cm_MergeStatus(NULL, dscp, &newDirStatus, &volSync, userp, CM_MERGEFLAG_DIROP);
1648 } else if (code == CM_ERROR_NOSUCHFILE) {
1649 /* windows would not have allowed the request to delete the file
1650 * if it did not believe the file existed. therefore, we must
1651 * have an inconsistent view of the world.
1653 dscp->cbServerp = NULL;
1655 lock_ReleaseMutex(&dscp->mx);
1657 if (code == 0 && cm_CheckDirOpForSingleChange(&dirop)) {
1658 cm_DirDeleteEntry(&dirop, namep);
1660 cm_BPlusDirDeleteEntry(&dirop, namep);
1663 cm_EndDirOp(&dirop);
1668 /* called with a locked vnode, and fills in the link info.
1669 * returns this the vnode still locked.
1671 long cm_HandleLink(cm_scache_t *linkScp, cm_user_t *userp, cm_req_t *reqp)
1678 lock_AssertMutex(&linkScp->mx);
1679 if (!linkScp->mountPointStringp[0]) {
1680 /* read the link data */
1681 lock_ReleaseMutex(&linkScp->mx);
1682 thyper.LowPart = thyper.HighPart = 0;
1683 code = buf_Get(linkScp, &thyper, &bufp);
1684 lock_ObtainMutex(&linkScp->mx);
1688 code = cm_SyncOp(linkScp, bufp, userp, reqp, 0,
1689 CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_READ);
1694 cm_SyncOpDone(linkScp, bufp, CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_READ);
1696 if (cm_HaveBuffer(linkScp, bufp, 0))
1699 code = cm_GetBuffer(linkScp, bufp, NULL, userp, reqp);
1704 } /* while loop to get the data */
1706 /* now if we still have no link read in,
1707 * copy the data from the buffer */
1708 if ((temp = linkScp->length.LowPart) >= MOUNTPOINTLEN) {
1710 return CM_ERROR_TOOBIG;
1713 /* otherwise, it fits; make sure it is still null (could have
1714 * lost race with someone else referencing this link above),
1715 * and if so, copy in the data.
1717 if (!linkScp->mountPointStringp[0]) {
1718 strncpy(linkScp->mountPointStringp, bufp->datap, temp);
1719 linkScp->mountPointStringp[temp] = 0; /* null terminate */
1721 if ( !strnicmp(linkScp->mountPointStringp, "msdfs:", strlen("msdfs:")) )
1722 linkScp->fileType = CM_SCACHETYPE_DFSLINK;
1725 } /* don't have sym link contents cached */
1730 /* called with a held vnode and a path suffix, with the held vnode being a
1731 * symbolic link. Our goal is to generate a new path to interpret, and return
1732 * this new path in newSpaceBufferp. If the new vnode is relative to a dir
1733 * other than the directory containing the symbolic link, then the new root is
1734 * returned in *newRootScpp, otherwise a null is returned there.
1736 long cm_AssembleLink(cm_scache_t *linkScp, char *pathSuffixp,
1737 cm_scache_t **newRootScpp, cm_space_t **newSpaceBufferp,
1738 cm_user_t *userp, cm_req_t *reqp)
1745 *newRootScpp = NULL;
1746 *newSpaceBufferp = NULL;
1748 lock_ObtainMutex(&linkScp->mx);
1749 code = cm_HandleLink(linkScp, userp, reqp);
1753 /* if we may overflow the buffer, bail out; buffer is signficantly
1754 * bigger than max path length, so we don't really have to worry about
1755 * being a little conservative here.
1757 if (strlen(linkScp->mountPointStringp) + strlen(pathSuffixp) + 2
1758 >= CM_UTILS_SPACESIZE)
1759 return CM_ERROR_TOOBIG;
1761 tsp = cm_GetSpace();
1762 linkp = linkScp->mountPointStringp;
1763 if (strncmp(linkp, cm_mountRoot, cm_mountRootLen) == 0) {
1764 if (strlen(linkp) > cm_mountRootLen)
1765 strcpy(tsp->data, linkp+cm_mountRootLen+1);
1768 *newRootScpp = cm_data.rootSCachep;
1769 cm_HoldSCache(cm_data.rootSCachep);
1770 } else if (linkp[0] == '\\' && linkp[1] == '\\') {
1771 if (!strnicmp(&linkp[2], cm_NetbiosName, (len = (long)strlen(cm_NetbiosName))))
1773 char * p = &linkp[len + 3];
1774 if (strnicmp(p, "all", 3) == 0)
1777 strcpy(tsp->data, p);
1778 for (p = tsp->data; *p; p++) {
1782 *newRootScpp = cm_data.rootSCachep;
1783 cm_HoldSCache(cm_data.rootSCachep);
1785 linkScp->fileType = CM_SCACHETYPE_DFSLINK;
1786 strcpy(tsp->data, linkp);
1787 code = CM_ERROR_PATH_NOT_COVERED;
1789 } else if ( linkScp->fileType == CM_SCACHETYPE_DFSLINK ||
1790 !strnicmp(linkp, "msdfs:", (len = (long)strlen("msdfs:"))) ) {
1791 linkScp->fileType = CM_SCACHETYPE_DFSLINK;
1792 strcpy(tsp->data, linkp);
1793 code = CM_ERROR_PATH_NOT_COVERED;
1794 } else if (*linkp == '\\' || *linkp == '/') {
1796 /* formerly, this was considered to be from the AFS root,
1797 * but this seems to create problems. instead, we will just
1798 * reject the link */
1799 strcpy(tsp->data, linkp+1);
1800 *newRootScpp = cm_data.rootSCachep;
1801 cm_HoldSCache(cm_data.rootSCachep);
1803 /* we still copy the link data into the response so that
1804 * the user can see what the link points to
1806 linkScp->fileType = CM_SCACHETYPE_INVALID;
1807 strcpy(tsp->data, linkp);
1808 code = CM_ERROR_NOSUCHPATH;
1811 /* a relative link */
1812 strcpy(tsp->data, linkp);
1814 if (pathSuffixp[0] != 0) { /* if suffix string is non-null */
1815 strcat(tsp->data, "\\");
1816 strcat(tsp->data, pathSuffixp);
1819 *newSpaceBufferp = tsp;
1823 if (code == CM_ERROR_PATH_NOT_COVERED && reqp->tidPathp && reqp->relPathp)
1824 cm_VolStatus_Notify_DFS_Mapping(linkScp, reqp->tidPathp, reqp->relPathp);
1828 lock_ReleaseMutex(&linkScp->mx);
1831 #ifdef DEBUG_REFCOUNT
1832 long cm_NameIDbg(cm_scache_t *rootSCachep, char *pathp, long flags,
1833 cm_user_t *userp, char *tidPathp, cm_req_t *reqp, cm_scache_t **outScpp,
1834 char * file, long line)
1836 long cm_NameI(cm_scache_t *rootSCachep, char *pathp, long flags,
1837 cm_user_t *userp, char *tidPathp, cm_req_t *reqp, cm_scache_t **outScpp)
1841 char *tp; /* ptr moving through input buffer */
1842 char tc; /* temp char */
1843 int haveComponent; /* has new component started? */
1844 char component[AFSPATHMAX]; /* this is the new component */
1845 char *cp; /* component name being assembled */
1846 cm_scache_t *tscp; /* current location in the hierarchy */
1847 cm_scache_t *nscp; /* next dude down */
1848 cm_scache_t *dirScp; /* last dir we searched */
1849 cm_scache_t *linkScp; /* new root for the symlink we just
1851 cm_space_t *psp; /* space for current path, if we've hit
1853 cm_space_t *tempsp; /* temp vbl */
1854 char *restp; /* rest of the pathname to interpret */
1855 int symlinkCount; /* count of # of symlinks traversed */
1856 int extraFlag; /* avoid chasing mt pts for dir cmd */
1857 int phase = 1; /* 1 = tidPathp, 2 = pathp */
1858 #define MAX_FID_COUNT 512
1859 cm_fid_t fids[MAX_FID_COUNT]; /* array of fids processed in this path walk */
1860 int fid_count = 0; /* number of fids processed in this path walk */
1863 #ifdef DEBUG_REFCOUNT
1864 afsi_log("%s:%d cm_NameI rootscp 0x%p ref %d", file, line, rootSCachep, rootSCachep->refCount);
1865 osi_Log4(afsd_logp,"cm_NameI rootscp 0x%p path %s tidpath %s flags 0x%x",
1866 rootSCachep, pathp ? pathp : "<NULL>", tidPathp ? tidPathp : "<NULL>",
1881 cm_HoldSCache(tscp);
1889 /* map Unix slashes into DOS ones so we can interpret Unix
1895 if (!haveComponent) {
1898 } else if (tc == 0) {
1912 /* we have a component here */
1913 if (tc == 0 || tc == '\\') {
1914 /* end of the component; we're at the last
1915 * component if tc == 0. However, if the last
1916 * is a symlink, we have more to do.
1918 *cp++ = 0; /* add null termination */
1920 if ((flags & CM_FLAG_DIRSEARCH) && tc == 0)
1921 extraFlag = CM_FLAG_NOMOUNTCHASE;
1922 code = cm_Lookup(tscp, component,
1924 userp, reqp, &nscp);
1927 if (!strcmp(component,"..") || !strcmp(component,".")) {
1929 * roll back the fid list until we find the fid
1930 * that matches where we are now. Its not necessarily
1931 * one or two fids because they might have been
1932 * symlinks or mount points or both that were crossed.
1934 for ( i=fid_count-1; i>=0; i--) {
1935 if (!cm_FidCmp(&nscp->fid, &fids[i]))
1939 /* add the new fid to the list */
1940 for ( i=0; i<fid_count; i++) {
1941 if ( !cm_FidCmp(&nscp->fid, &fids[i]) ) {
1942 code = CM_ERROR_TOO_MANY_SYMLINKS;
1943 cm_ReleaseSCache(nscp);
1948 if (i == fid_count && fid_count < MAX_FID_COUNT) {
1949 fids[fid_count++] = nscp->fid;
1955 cm_ReleaseSCache(tscp);
1957 cm_ReleaseSCache(dirScp);
1960 if ((code == CM_ERROR_NOSUCHFILE || code == CM_ERROR_BPLUS_NOMATCH) &&
1961 tscp->fileType == CM_SCACHETYPE_SYMLINK)
1963 osi_Log0(afsd_logp,"cm_NameI code CM_ERROR_NOSUCHPATH");
1964 return CM_ERROR_NOSUCHPATH;
1966 osi_Log1(afsd_logp,"cm_NameI code 0x%x", code);
1971 haveComponent = 0; /* component done */
1973 cm_ReleaseSCache(dirScp);
1974 dirScp = tscp; /* for some symlinks */
1975 tscp = nscp; /* already held */
1977 if (tc == 0 && !(flags & CM_FLAG_FOLLOW) && phase == 2) {
1980 cm_ReleaseSCache(dirScp);
1986 /* now, if tscp is a symlink, we should follow
1987 * it and assemble the path again.
1989 lock_ObtainMutex(&tscp->mx);
1990 code = cm_SyncOp(tscp, NULL, userp, reqp, 0,
1991 CM_SCACHESYNC_GETSTATUS
1992 | CM_SCACHESYNC_NEEDCALLBACK);
1994 lock_ReleaseMutex(&tscp->mx);
1995 cm_ReleaseSCache(tscp);
1998 cm_ReleaseSCache(dirScp);
2003 cm_SyncOpDone(tscp, NULL, CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS);
2005 if (tscp->fileType == CM_SCACHETYPE_SYMLINK) {
2006 /* this is a symlink; assemble a new buffer */
2007 lock_ReleaseMutex(&tscp->mx);
2008 if (symlinkCount++ >= MAX_SYMLINK_COUNT) {
2009 cm_ReleaseSCache(tscp);
2012 cm_ReleaseSCache(dirScp);
2017 osi_Log0(afsd_logp,"cm_NameI code CM_ERROR_TOO_MANY_SYMLINKS");
2018 return CM_ERROR_TOO_MANY_SYMLINKS;
2024 code = cm_AssembleLink(tscp, restp, &linkScp, &tempsp, userp, reqp);
2026 if (code == 0 && linkScp != NULL) {
2027 if (linkScp == cm_data.rootSCachep)
2030 for ( i=0; i<fid_count; i++) {
2031 if ( !cm_FidCmp(&linkScp->fid, &fids[i]) ) {
2032 code = CM_ERROR_TOO_MANY_SYMLINKS;
2033 cm_ReleaseSCache(linkScp);
2039 if (i == fid_count && fid_count < MAX_FID_COUNT) {
2040 fids[fid_count++] = linkScp->fid;
2045 /* something went wrong */
2046 cm_ReleaseSCache(tscp);
2049 cm_ReleaseSCache(dirScp);
2055 /* otherwise, tempsp has the new path,
2056 * and linkScp is the new root from
2057 * which to interpret that path.
2058 * Continue with the namei processing,
2059 * also doing the bookkeeping for the
2060 * space allocation and tracking the
2061 * vnode reference counts.
2067 cm_ReleaseSCache(tscp);
2072 * now, if linkScp is null, that's
2073 * AssembleLink's way of telling us that
2074 * the sym link is relative to the dir
2075 * containing the link. We have a ref
2076 * to it in dirScp, and we hold it now
2077 * and reuse it as the new spot in the
2085 /* not a symlink, we may be done */
2086 lock_ReleaseMutex(&tscp->mx);
2094 cm_ReleaseSCache(dirScp);
2102 cm_ReleaseSCache(dirScp);
2105 } /* end of a component */
2108 } /* we have a component */
2109 } /* big while loop over all components */
2113 cm_ReleaseSCache(dirScp);
2119 cm_ReleaseSCache(tscp);
2121 #ifdef DEBUG_REFCOUNT
2122 afsi_log("%s:%d cm_NameI code 0x%x outScpp 0x%p ref %d", file, line, code, *outScpp, (*outScpp)->refCount);
2124 osi_Log2(afsd_logp,"cm_NameI code 0x%x outScpp 0x%p", code, *outScpp);
2128 /* called with a dir, and a vnode within the dir that happens to be a symlink.
2129 * We chase the link, and return a held pointer to the target, if it exists,
2130 * in *outScpp. If we succeed, we return 0, otherwise we return an error code
2131 * and do not hold or return a target vnode.
2133 * This is very similar to calling cm_NameI with the last component of a name,
2134 * which happens to be a symlink, except that we've already passed by the name.
2136 * This function is typically called by the directory listing functions, which
2137 * encounter symlinks but need to return the proper file length so programs
2138 * like "more" work properly when they make use of the attributes retrieved from
2141 * The input vnode should not be locked when this function is called.
2143 long cm_EvaluateSymLink(cm_scache_t *dscp, cm_scache_t *linkScp,
2144 cm_scache_t **outScpp, cm_user_t *userp, cm_req_t *reqp)
2148 cm_scache_t *newRootScp;
2150 osi_Log1(afsd_logp, "Evaluating symlink scp 0x%p", linkScp);
2152 code = cm_AssembleLink(linkScp, "", &newRootScp, &spacep, userp, reqp);
2156 /* now, if newRootScp is NULL, we're really being told that the symlink
2157 * is relative to the current directory (dscp).
2159 if (newRootScp == NULL) {
2161 cm_HoldSCache(dscp);
2164 code = cm_NameI(newRootScp, spacep->data,
2165 CM_FLAG_CASEFOLD | CM_FLAG_FOLLOW | CM_FLAG_DIRSEARCH,
2166 userp, NULL, reqp, outScpp);
2168 if (code == CM_ERROR_NOSUCHFILE || code == CM_ERROR_BPLUS_NOMATCH)
2169 code = CM_ERROR_NOSUCHPATH;
2171 /* this stuff is allocated no matter what happened on the namei call,
2173 cm_FreeSpace(spacep);
2174 cm_ReleaseSCache(newRootScp);
2176 if (linkScp == *outScpp) {
2177 cm_ReleaseSCache(*outScpp);
2179 code = CM_ERROR_NOSUCHPATH;
2185 /* make this big enough so that one buffer of dir pages won't overflow. We'll
2186 * check anyway, but we want to minimize the chance that we have to leave stuff
2189 #define CM_BULKMAX (3 * AFSCBMAX)
2191 /* rock for bulk stat calls */
2192 typedef struct cm_bulkStat {
2193 osi_hyper_t bufOffset; /* only do it for things in this buffer page */
2195 /* info for the actual call */
2196 int counter; /* next free slot */
2197 AFSFid fids[CM_BULKMAX];
2198 AFSFetchStatus stats[CM_BULKMAX];
2199 AFSCallBack callbacks[CM_BULKMAX];
2202 /* for a given entry, make sure that it isn't in the stat cache, and then
2203 * add it to the list of file IDs to be obtained.
2205 * Don't bother adding it if we already have a vnode. Note that the dir
2206 * is locked, so we have to be careful checking the vnode we're thinking of
2207 * processing, to avoid deadlocks.
2209 long cm_TryBulkProc(cm_scache_t *scp, cm_dirEntry_t *dep, void *rockp,
2220 /* Don't overflow bsp. */
2221 if (bsp->counter >= CM_BULKMAX)
2222 return CM_ERROR_STOPNOW;
2224 thyper.LowPart = cm_data.buf_blockSize;
2225 thyper.HighPart = 0;
2226 thyper = LargeIntegerAdd(thyper, bsp->bufOffset);
2228 /* thyper is now the first byte past the end of the record we're
2229 * interested in, and bsp->bufOffset is the first byte of the record
2230 * we're interested in.
2231 * Skip data in the others.
2234 if (LargeIntegerLessThan(*offp, bsp->bufOffset))
2236 if (LargeIntegerGreaterThanOrEqualTo(*offp, thyper))
2237 return CM_ERROR_STOPNOW;
2238 if (strcmp(dep->name, ".") == 0 || strcmp(dep->name, "..") == 0)
2241 tfid.cell = scp->fid.cell;
2242 tfid.volume = scp->fid.volume;
2243 tfid.vnode = ntohl(dep->fid.vnode);
2244 tfid.unique = ntohl(dep->fid.unique);
2245 tscp = cm_FindSCache(&tfid);
2247 if (lock_TryMutex(&tscp->mx)) {
2248 /* we have an entry that we can look at */
2249 if (!(tscp->flags & CM_SCACHEFLAG_EACCESS) && cm_HaveCallback(tscp)) {
2250 /* we have a callback on it. Don't bother
2251 * fetching this stat entry, since we're happy
2252 * with the info we have.
2254 lock_ReleaseMutex(&tscp->mx);
2255 cm_ReleaseSCache(tscp);
2258 lock_ReleaseMutex(&tscp->mx);
2260 cm_ReleaseSCache(tscp);
2263 #ifdef AFS_FREELANCE_CLIENT
2264 // yj: if this is a mountpoint under root.afs then we don't want it
2265 // to be bulkstat-ed, instead, we call getSCache directly and under
2266 // getSCache, it is handled specially.
2267 if ( cm_freelanceEnabled &&
2268 tfid.cell==AFS_FAKE_ROOT_CELL_ID &&
2269 tfid.volume==AFS_FAKE_ROOT_VOL_ID &&
2270 !(tfid.vnode==0x1 && tfid.unique==0x1) )
2272 osi_Log0(afsd_logp, "cm_TryBulkProc Freelance calls cm_SCache on root.afs mountpoint");
2273 return cm_GetSCache(&tfid, &tscp, NULL, NULL);
2275 #endif /* AFS_FREELANCE_CLIENT */
2278 bsp->fids[i].Volume = scp->fid.volume;
2279 bsp->fids[i].Vnode = tfid.vnode;
2280 bsp->fids[i].Unique = tfid.unique;
2284 /* called with a locked scp and a pointer to a buffer. Make bulk stat
2285 * calls on all undeleted files in the page of the directory specified.
2288 cm_TryBulkStat(cm_scache_t *dscp, osi_hyper_t *offsetp, cm_user_t *userp,
2292 cm_bulkStat_t bb; /* this is *BIG*, probably 16K or so;
2293 * watch for stack problems */
2294 AFSCBFids fidStruct;
2295 AFSBulkStats statStruct;
2297 AFSCBs callbackStruct;
2300 cm_callbackRequest_t cbReq;
2306 struct rx_connection * callp;
2307 int inlinebulk = 0; /* Did we use InlineBulkStatus RPC or not? */
2309 osi_Log1(afsd_logp, "cm_TryBulkStat dir 0x%p", dscp);
2311 /* should be on a buffer boundary */
2312 osi_assertx((offsetp->LowPart & (cm_data.buf_blockSize - 1)) == 0, "invalid offset");
2314 memset(&bb, 0, sizeof(bb));
2315 bb.bufOffset = *offsetp;
2317 lock_ReleaseMutex(&dscp->mx);
2318 /* first, assemble the file IDs we need to stat */
2319 code = cm_ApplyDir(dscp, cm_TryBulkProc, (void *) &bb, offsetp, userp, reqp, NULL);
2321 /* if we failed, bail out early */
2322 if (code && code != CM_ERROR_STOPNOW) {
2323 lock_ObtainMutex(&dscp->mx);
2327 /* otherwise, we may have one or more bulk stat's worth of stuff in bb;
2328 * make the calls to create the entries. Handle AFSCBMAX files at a
2332 while (filex < bb.counter) {
2333 filesThisCall = bb.counter - filex;
2334 if (filesThisCall > AFSCBMAX)
2335 filesThisCall = AFSCBMAX;
2337 fidStruct.AFSCBFids_len = filesThisCall;
2338 fidStruct.AFSCBFids_val = &bb.fids[filex];
2339 statStruct.AFSBulkStats_len = filesThisCall;
2340 statStruct.AFSBulkStats_val = &bb.stats[filex];
2341 callbackStruct.AFSCBs_len = filesThisCall;
2342 callbackStruct.AFSCBs_val = &bb.callbacks[filex];
2343 cm_StartCallbackGrantingCall(NULL, &cbReq);
2344 osi_Log1(afsd_logp, "CALL BulkStatus, %d entries", filesThisCall);
2346 code = cm_ConnFromFID(&dscp->fid, userp, reqp, &connp);
2350 callp = cm_GetRxConn(connp);
2351 if (!(connp->serverp->flags & CM_SERVERFLAG_NOINLINEBULK)) {
2352 code = RXAFS_InlineBulkStatus(callp, &fidStruct,
2353 &statStruct, &callbackStruct, &volSync);
2354 if (code == RXGEN_OPCODE) {
2355 cm_SetServerNoInlineBulk(connp->serverp, 0);
2361 code = RXAFS_BulkStatus(callp, &fidStruct,
2362 &statStruct, &callbackStruct, &volSync);
2364 rx_PutConnection(callp);
2366 } while (cm_Analyze(connp, userp, reqp, &dscp->fid,
2367 &volSync, NULL, &cbReq, code));
2368 code = cm_MapRPCError(code, reqp);
2370 osi_Log2(afsd_logp, "CALL %sBulkStatus FAILURE code 0x%x",
2371 inlinebulk ? "Inline" : "", code);
2373 osi_Log1(afsd_logp, "CALL %sBulkStatus SUCCESS", inlinebulk ? "Inline" : "");
2375 /* may as well quit on an error, since we're not going to do
2376 * much better on the next immediate call, either.
2379 cm_EndCallbackGrantingCall(NULL, &cbReq, NULL, 0);
2383 /* otherwise, we should do the merges */
2384 for (i = 0; i<filesThisCall; i++) {
2386 tfid.cell = dscp->fid.cell;
2387 tfid.volume = bb.fids[j].Volume;
2388 tfid.vnode = bb.fids[j].Vnode;
2389 tfid.unique = bb.fids[j].Unique;
2390 code = cm_GetSCache(&tfid, &scp, userp, reqp);
2394 /* otherwise, if this entry has no callback info,
2397 lock_ObtainMutex(&scp->mx);
2398 /* now, we have to be extra paranoid on merging in this
2399 * information, since we didn't use cm_SyncOp before
2400 * starting the fetch to make sure that no bad races
2401 * were occurring. Specifically, we need to make sure
2402 * we don't obliterate any newer information in the
2403 * vnode than have here.
2405 * Right now, be pretty conservative: if there's a
2406 * callback or a pending call, skip it.
2408 if ((scp->cbServerp == NULL || (scp->flags & CM_SCACHEFLAG_EACCESS))
2410 (CM_SCACHEFLAG_FETCHING
2411 | CM_SCACHEFLAG_STORING
2412 | CM_SCACHEFLAG_SIZESTORING))) {
2413 cm_EndCallbackGrantingCall(scp, &cbReq,
2415 CM_CALLBACK_MAINTAINCOUNT);
2416 cm_MergeStatus(dscp, scp, &bb.stats[j], &volSync, userp, 0);
2418 lock_ReleaseMutex(&scp->mx);
2419 cm_ReleaseSCache(scp);
2420 } /* all files in the response */
2421 /* now tell it to drop the count,
2422 * after doing the vnode processing above */
2423 cm_EndCallbackGrantingCall(NULL, &cbReq, NULL, 0);
2425 filex += filesThisCall;
2426 } /* while there are still more files to process */
2427 lock_ObtainMutex(&dscp->mx);
2429 /* If we did the InlineBulk RPC pull out the return code and log it */
2431 if ((&bb.stats[0])->errorCode) {
2432 osi_Log1(afsd_logp, "cm_TryBulkStat bulk stat error: %d",
2433 (&bb.stats[0])->errorCode);
2437 osi_Log0(afsd_logp, "END cm_TryBulkStat");
2441 void cm_StatusFromAttr(AFSStoreStatus *statusp, cm_scache_t *scp, cm_attr_t *attrp)
2445 /* initialize store back mask as inexpensive local variable */
2447 memset(statusp, 0, sizeof(AFSStoreStatus));
2449 /* copy out queued info from scache first, if scp passed in */
2451 if (scp->mask & CM_SCACHEMASK_CLIENTMODTIME) {
2452 statusp->ClientModTime = scp->clientModTime;
2453 mask |= AFS_SETMODTIME;
2454 scp->mask &= ~CM_SCACHEMASK_CLIENTMODTIME;
2459 /* now add in our locally generated request */
2460 if (attrp->mask & CM_ATTRMASK_CLIENTMODTIME) {
2461 statusp->ClientModTime = attrp->clientModTime;
2462 mask |= AFS_SETMODTIME;
2464 if (attrp->mask & CM_ATTRMASK_UNIXMODEBITS) {
2465 statusp->UnixModeBits = attrp->unixModeBits;
2466 mask |= AFS_SETMODE;
2468 if (attrp->mask & CM_ATTRMASK_OWNER) {
2469 statusp->Owner = attrp->owner;
2470 mask |= AFS_SETOWNER;
2472 if (attrp->mask & CM_ATTRMASK_GROUP) {
2473 statusp->Group = attrp->group;
2474 mask |= AFS_SETGROUP;
2477 statusp->Mask = mask;
2480 /* set the file size, and make sure that all relevant buffers have been
2481 * truncated. Ensure that any partially truncated buffers have been zeroed
2482 * to the end of the buffer.
2484 long cm_SetLength(cm_scache_t *scp, osi_hyper_t *sizep, cm_user_t *userp,
2490 /* start by locking out buffer creation */
2491 lock_ObtainWrite(&scp->bufCreateLock);
2493 /* verify that this is a file, not a dir or a symlink */
2494 lock_ObtainMutex(&scp->mx);
2495 code = cm_SyncOp(scp, NULL, userp, reqp, 0,
2496 CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS);
2499 cm_SyncOpDone(scp, NULL, CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS);
2501 if (scp->fileType != CM_SCACHETYPE_FILE) {
2502 code = CM_ERROR_ISDIR;
2507 if (LargeIntegerLessThan(*sizep, scp->length))
2512 lock_ReleaseMutex(&scp->mx);
2514 /* can't hold scp->mx lock here, since we may wait for a storeback to
2515 * finish if the buffer package is cleaning a buffer by storing it to
2519 buf_Truncate(scp, userp, reqp, sizep);
2521 /* now ensure that file length is short enough, and update truncPos */
2522 lock_ObtainMutex(&scp->mx);
2524 /* make sure we have a callback (so we have the right value for the
2525 * length), and wait for it to be safe to do a truncate.
2527 code = cm_SyncOp(scp, NULL, userp, reqp, PRSFS_WRITE,
2528 CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS
2529 | CM_SCACHESYNC_SETSTATUS | CM_SCACHESYNC_SETSIZE);
2531 /* If we only have 'i' bits, then we should still be able to set
2532 the size of a file we created. */
2533 if (code == CM_ERROR_NOACCESS && scp->creator == userp) {
2534 code = cm_SyncOp(scp, NULL, userp, reqp, PRSFS_INSERT,
2535 CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS
2536 | CM_SCACHESYNC_SETSTATUS | CM_SCACHESYNC_SETSIZE);
2542 if (LargeIntegerLessThan(*sizep, scp->length)) {
2543 /* a real truncation. If truncPos is not set yet, or is bigger
2544 * than where we're truncating the file, set truncPos to this
2549 if (!(scp->mask & CM_SCACHEMASK_TRUNCPOS)
2550 || LargeIntegerLessThan(*sizep, scp->length)) {
2552 scp->truncPos = *sizep;
2553 scp->mask |= CM_SCACHEMASK_TRUNCPOS;
2555 /* in either case, the new file size has been changed */
2556 scp->length = *sizep;
2557 scp->mask |= CM_SCACHEMASK_LENGTH;
2559 else if (LargeIntegerGreaterThan(*sizep, scp->length)) {
2560 /* really extending the file */
2561 scp->length = *sizep;
2562 scp->mask |= CM_SCACHEMASK_LENGTH;
2565 /* done successfully */
2568 cm_SyncOpDone(scp, NULL,
2569 CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS
2570 | CM_SCACHESYNC_SETSTATUS | CM_SCACHESYNC_SETSIZE);
2573 lock_ReleaseMutex(&scp->mx);
2574 lock_ReleaseWrite(&scp->bufCreateLock);
2579 /* set the file size or other attributes (but not both at once) */
2580 long cm_SetAttr(cm_scache_t *scp, cm_attr_t *attrp, cm_user_t *userp,
2584 AFSFetchStatus afsOutStatus;
2588 AFSStoreStatus afsInStatus;
2589 struct rx_connection * callp;
2591 /* handle file length setting */
2592 if (attrp->mask & CM_ATTRMASK_LENGTH)
2593 return cm_SetLength(scp, &attrp->length, userp, reqp);
2595 lock_ObtainMutex(&scp->mx);
2596 /* otherwise, we have to make an RPC to get the status */
2597 code = cm_SyncOp(scp, NULL, userp, reqp, 0, CM_SCACHESYNC_STORESTATUS);
2599 lock_ReleaseMutex(&scp->mx);
2603 /* make the attr structure */
2604 cm_StatusFromAttr(&afsInStatus, scp, attrp);
2606 tfid.Volume = scp->fid.volume;
2607 tfid.Vnode = scp->fid.vnode;
2608 tfid.Unique = scp->fid.unique;
2609 lock_ReleaseMutex(&scp->mx);
2611 /* now make the RPC */
2612 osi_Log1(afsd_logp, "CALL StoreStatus scp 0x%p", scp);
2614 code = cm_ConnFromFID(&scp->fid, userp, reqp, &connp);
2618 callp = cm_GetRxConn(connp);
2619 code = RXAFS_StoreStatus(callp, &tfid,
2620 &afsInStatus, &afsOutStatus, &volSync);
2621 rx_PutConnection(callp);
2623 } while (cm_Analyze(connp, userp, reqp,
2624 &scp->fid, &volSync, NULL, NULL, code));
2625 code = cm_MapRPCError(code, reqp);
2628 osi_Log1(afsd_logp, "CALL StoreStatus FAILURE, code 0x%x", code);
2630 osi_Log0(afsd_logp, "CALL StoreStatus SUCCESS");
2632 lock_ObtainMutex(&scp->mx);
2633 cm_SyncOpDone(scp, NULL, CM_SCACHESYNC_STORESTATUS);
2635 cm_MergeStatus(NULL, scp, &afsOutStatus, &volSync, userp,
2636 CM_MERGEFLAG_FORCE|CM_MERGEFLAG_STOREDATA);
2638 /* if we're changing the mode bits, discard the ACL cache,
2639 * since we changed the mode bits.
2641 if (afsInStatus.Mask & AFS_SETMODE)
2642 cm_FreeAllACLEnts(scp);
2643 lock_ReleaseMutex(&scp->mx);
2647 long cm_Create(cm_scache_t *dscp, char *namep, long flags, cm_attr_t *attrp,
2648 cm_scache_t **scpp, cm_user_t *userp, cm_req_t *reqp)
2653 cm_callbackRequest_t cbReq;
2656 cm_scache_t *scp = NULL;
2658 AFSStoreStatus inStatus;
2659 AFSFetchStatus updatedDirStatus;
2660 AFSFetchStatus newFileStatus;
2661 AFSCallBack newFileCallback;
2663 struct rx_connection * callp;
2666 /* can't create names with @sys in them; must expand it manually first.
2667 * return "invalid request" if they try.
2669 if (cm_ExpandSysName(namep, NULL, 0, 0)) {
2670 return CM_ERROR_ATSYS;
2673 /* before starting the RPC, mark that we're changing the file data, so
2674 * that someone who does a chmod will know to wait until our call
2677 cm_BeginDirOp(dscp, userp, reqp, CM_DIRLOCK_NONE, &dirop);
2678 lock_ObtainMutex(&dscp->mx);
2679 code = cm_SyncOp(dscp, NULL, userp, reqp, 0, CM_SCACHESYNC_STOREDATA);
2680 lock_ReleaseMutex(&dscp->mx);
2682 cm_StartCallbackGrantingCall(NULL, &cbReq);
2684 cm_EndDirOp(&dirop);
2691 cm_StatusFromAttr(&inStatus, NULL, attrp);
2693 /* try the RPC now */
2694 osi_Log1(afsd_logp, "CALL CreateFile scp 0x%p", dscp);
2696 code = cm_ConnFromFID(&dscp->fid, userp, reqp, &connp);
2700 dirAFSFid.Volume = dscp->fid.volume;
2701 dirAFSFid.Vnode = dscp->fid.vnode;
2702 dirAFSFid.Unique = dscp->fid.unique;
2704 callp = cm_GetRxConn(connp);
2705 code = RXAFS_CreateFile(connp->callp, &dirAFSFid, namep,
2706 &inStatus, &newAFSFid, &newFileStatus,
2707 &updatedDirStatus, &newFileCallback,
2709 rx_PutConnection(callp);
2711 } while (cm_Analyze(connp, userp, reqp,
2712 &dscp->fid, &volSync, NULL, &cbReq, code));
2713 code = cm_MapRPCError(code, reqp);
2716 osi_Log1(afsd_logp, "CALL CreateFile FAILURE, code 0x%x", code);
2718 osi_Log0(afsd_logp, "CALL CreateFile SUCCESS");
2721 lock_ObtainWrite(&dirop.scp->dirlock);
2722 dirop.lockType = CM_DIRLOCK_WRITE;
2724 lock_ObtainMutex(&dscp->mx);
2725 cm_SyncOpDone(dscp, NULL, CM_SCACHESYNC_STOREDATA);
2727 cm_MergeStatus(NULL, dscp, &updatedDirStatus, &volSync, userp, CM_MERGEFLAG_DIROP);
2729 lock_ReleaseMutex(&dscp->mx);
2731 /* now try to create the file's entry, too, but be careful to
2732 * make sure that we don't merge in old info. Since we weren't locking
2733 * out any requests during the file's creation, we may have pretty old
2737 newFid.cell = dscp->fid.cell;
2738 newFid.volume = dscp->fid.volume;
2739 newFid.vnode = newAFSFid.Vnode;
2740 newFid.unique = newAFSFid.Unique;
2741 code = cm_GetSCache(&newFid, &scp, userp, reqp);
2743 lock_ObtainMutex(&scp->mx);
2744 scp->creator = userp; /* remember who created it */
2745 if (!cm_HaveCallback(scp)) {
2746 cm_MergeStatus(dscp, scp, &newFileStatus, &volSync,
2748 cm_EndCallbackGrantingCall(scp, &cbReq,
2749 &newFileCallback, 0);
2752 lock_ReleaseMutex(&scp->mx);
2757 /* make sure we end things properly */
2759 cm_EndCallbackGrantingCall(NULL, &cbReq, NULL, 0);
2761 if (scp && cm_CheckDirOpForSingleChange(&dirop)) {
2762 cm_DirCreateEntry(&dirop, namep, &newFid);
2764 cm_BPlusDirCreateEntry(&dirop, namep, &newFid);
2767 cm_EndDirOp(&dirop);
2772 long cm_FSync(cm_scache_t *scp, cm_user_t *userp, cm_req_t *reqp)
2776 lock_ObtainWrite(&scp->bufCreateLock);
2777 code = buf_CleanVnode(scp, userp, reqp);
2778 lock_ReleaseWrite(&scp->bufCreateLock);
2780 lock_ObtainMutex(&scp->mx);
2782 if (scp->mask & (CM_SCACHEMASK_TRUNCPOS
2783 | CM_SCACHEMASK_CLIENTMODTIME
2784 | CM_SCACHEMASK_LENGTH))
2785 code = cm_StoreMini(scp, userp, reqp);
2787 if (scp->flags & (CM_SCACHEFLAG_OVERQUOTA | CM_SCACHEFLAG_OUTOFSPACE)) {
2788 code = (scp->flags & CM_SCACHEFLAG_OVERQUOTA) ? CM_ERROR_QUOTA : CM_ERROR_SPACE;
2789 scp->flags &= ~(CM_SCACHEFLAG_OVERQUOTA | CM_SCACHEFLAG_OUTOFSPACE);
2792 lock_ReleaseMutex(&scp->mx);
2797 long cm_MakeDir(cm_scache_t *dscp, char *namep, long flags, cm_attr_t *attrp,
2798 cm_user_t *userp, cm_req_t *reqp)
2803 cm_callbackRequest_t cbReq;
2806 cm_scache_t *scp = NULL;
2808 AFSStoreStatus inStatus;
2809 AFSFetchStatus updatedDirStatus;
2810 AFSFetchStatus newDirStatus;
2811 AFSCallBack newDirCallback;
2813 struct rx_connection * callp;
2816 /* can't create names with @sys in them; must expand it manually first.
2817 * return "invalid request" if they try.
2819 if (cm_ExpandSysName(namep, NULL, 0, 0)) {
2820 return CM_ERROR_ATSYS;
2823 /* before starting the RPC, mark that we're changing the directory
2824 * data, so that someone who does a chmod on the dir will wait until
2825 * our call completes.
2827 cm_BeginDirOp(dscp, userp, reqp, CM_DIRLOCK_NONE, &dirop);
2828 lock_ObtainMutex(&dscp->mx);
2829 code = cm_SyncOp(dscp, NULL, userp, reqp, 0, CM_SCACHESYNC_STOREDATA);
2830 lock_ReleaseMutex(&dscp->mx);
2832 cm_StartCallbackGrantingCall(NULL, &cbReq);
2834 cm_EndDirOp(&dirop);
2841 cm_StatusFromAttr(&inStatus, NULL, attrp);
2843 /* try the RPC now */
2844 osi_Log1(afsd_logp, "CALL MakeDir scp 0x%p", dscp);
2846 code = cm_ConnFromFID(&dscp->fid, userp, reqp, &connp);
2850 dirAFSFid.Volume = dscp->fid.volume;
2851 dirAFSFid.Vnode = dscp->fid.vnode;
2852 dirAFSFid.Unique = dscp->fid.unique;
2854 callp = cm_GetRxConn(connp);
2855 code = RXAFS_MakeDir(connp->callp, &dirAFSFid, namep,
2856 &inStatus, &newAFSFid, &newDirStatus,
2857 &updatedDirStatus, &newDirCallback,
2859 rx_PutConnection(callp);
2861 } while (cm_Analyze(connp, userp, reqp,
2862 &dscp->fid, &volSync, NULL, &cbReq, code));
2863 code = cm_MapRPCError(code, reqp);
2866 osi_Log1(afsd_logp, "CALL MakeDir FAILURE, code 0x%x", code);
2868 osi_Log0(afsd_logp, "CALL MakeDir SUCCESS");
2871 lock_ObtainWrite(&dirop.scp->dirlock);
2872 dirop.lockType = CM_DIRLOCK_WRITE;
2874 lock_ObtainMutex(&dscp->mx);
2875 cm_SyncOpDone(dscp, NULL, CM_SCACHESYNC_STOREDATA);
2877 cm_MergeStatus(NULL, dscp, &updatedDirStatus, &volSync, userp, CM_MERGEFLAG_DIROP);
2879 lock_ReleaseMutex(&dscp->mx);
2881 /* now try to create the new dir's entry, too, but be careful to
2882 * make sure that we don't merge in old info. Since we weren't locking
2883 * out any requests during the file's creation, we may have pretty old
2887 newFid.cell = dscp->fid.cell;
2888 newFid.volume = dscp->fid.volume;
2889 newFid.vnode = newAFSFid.Vnode;
2890 newFid.unique = newAFSFid.Unique;
2891 code = cm_GetSCache(&newFid, &scp, userp, reqp);
2893 lock_ObtainMutex(&scp->mx);
2894 if (!cm_HaveCallback(scp)) {
2895 cm_MergeStatus(dscp, scp, &newDirStatus, &volSync,
2897 cm_EndCallbackGrantingCall(scp, &cbReq,
2898 &newDirCallback, 0);
2901 lock_ReleaseMutex(&scp->mx);
2902 cm_ReleaseSCache(scp);
2906 /* make sure we end things properly */
2908 cm_EndCallbackGrantingCall(NULL, &cbReq, NULL, 0);
2910 if (scp && cm_CheckDirOpForSingleChange(&dirop)) {
2911 cm_DirCreateEntry(&dirop, namep, &newFid);
2913 cm_BPlusDirCreateEntry(&dirop, namep, &newFid);
2916 cm_EndDirOp(&dirop);
2918 /* and return error code */
2922 long cm_Link(cm_scache_t *dscp, char *namep, cm_scache_t *sscp, long flags,
2923 cm_user_t *userp, cm_req_t *reqp)
2928 AFSFid existingAFSFid;
2929 AFSFetchStatus updatedDirStatus;
2930 AFSFetchStatus newLinkStatus;
2932 struct rx_connection * callp;
2935 if (dscp->fid.cell != sscp->fid.cell ||
2936 dscp->fid.volume != sscp->fid.volume) {
2937 return CM_ERROR_CROSSDEVLINK;
2940 cm_BeginDirOp(dscp, userp, reqp, CM_DIRLOCK_NONE, &dirop);
2941 lock_ObtainMutex(&dscp->mx);
2942 code = cm_SyncOp(dscp, NULL, userp, reqp, 0, CM_SCACHESYNC_STOREDATA);
2943 lock_ReleaseMutex(&dscp->mx);
2945 cm_EndDirOp(&dirop);
2950 /* try the RPC now */
2951 osi_Log1(afsd_logp, "CALL Link scp 0x%p", dscp);
2953 code = cm_ConnFromFID(&dscp->fid, userp, reqp, &connp);
2956 dirAFSFid.Volume = dscp->fid.volume;
2957 dirAFSFid.Vnode = dscp->fid.vnode;
2958 dirAFSFid.Unique = dscp->fid.unique;
2960 existingAFSFid.Volume = sscp->fid.volume;
2961 existingAFSFid.Vnode = sscp->fid.vnode;
2962 existingAFSFid.Unique = sscp->fid.unique;
2964 callp = cm_GetRxConn(connp);
2965 code = RXAFS_Link(callp, &dirAFSFid, namep, &existingAFSFid,
2966 &newLinkStatus, &updatedDirStatus, &volSync);
2967 rx_PutConnection(callp);
2968 osi_Log1(smb_logp," RXAFS_Link returns 0x%x", code);
2970 } while (cm_Analyze(connp, userp, reqp,
2971 &dscp->fid, &volSync, NULL, NULL, code));
2973 code = cm_MapRPCError(code, reqp);
2976 osi_Log1(afsd_logp, "CALL Link FAILURE, code 0x%x", code);
2978 osi_Log0(afsd_logp, "CALL Link SUCCESS");
2981 lock_ObtainWrite(&dirop.scp->dirlock);
2982 dirop.lockType = CM_DIRLOCK_WRITE;
2984 lock_ObtainMutex(&dscp->mx);
2985 cm_SyncOpDone(dscp, NULL, CM_SCACHESYNC_STOREDATA);
2987 cm_MergeStatus(NULL, dscp, &updatedDirStatus, &volSync, userp, CM_MERGEFLAG_DIROP);
2989 lock_ReleaseMutex(&dscp->mx);
2992 if (cm_CheckDirOpForSingleChange(&dirop)) {
2993 cm_DirCreateEntry(&dirop, namep, &sscp->fid);
2995 cm_BPlusDirCreateEntry(&dirop, namep, &sscp->fid);
2999 cm_EndDirOp(&dirop);
3004 long cm_SymLink(cm_scache_t *dscp, char *namep, char *contentsp, long flags,
3005 cm_attr_t *attrp, cm_user_t *userp, cm_req_t *reqp)
3013 AFSStoreStatus inStatus;
3014 AFSFetchStatus updatedDirStatus;
3015 AFSFetchStatus newLinkStatus;
3017 struct rx_connection * callp;
3020 /* before starting the RPC, mark that we're changing the directory data,
3021 * so that someone who does a chmod on the dir will wait until our
3024 cm_BeginDirOp(dscp, userp, reqp, CM_DIRLOCK_NONE, &dirop);
3025 lock_ObtainMutex(&dscp->mx);
3026 code = cm_SyncOp(dscp, NULL, userp, reqp, 0, CM_SCACHESYNC_STOREDATA);
3027 lock_ReleaseMutex(&dscp->mx);
3029 cm_EndDirOp(&dirop);
3034 cm_StatusFromAttr(&inStatus, NULL, attrp);
3036 /* try the RPC now */
3037 osi_Log1(afsd_logp, "CALL Symlink scp 0x%p", dscp);
3039 code = cm_ConnFromFID(&dscp->fid, userp, reqp, &connp);
3043 dirAFSFid.Volume = dscp->fid.volume;
3044 dirAFSFid.Vnode = dscp->fid.vnode;
3045 dirAFSFid.Unique = dscp->fid.unique;
3047 callp = cm_GetRxConn(connp);
3048 code = RXAFS_Symlink(callp, &dirAFSFid, namep, contentsp,
3049 &inStatus, &newAFSFid, &newLinkStatus,
3050 &updatedDirStatus, &volSync);
3051 rx_PutConnection(callp);
3053 } while (cm_Analyze(connp, userp, reqp,
3054 &dscp->fid, &volSync, NULL, NULL, code));
3055 code = cm_MapRPCError(code, reqp);
3058 osi_Log1(afsd_logp, "CALL Symlink FAILURE, code 0x%x", code);
3060 osi_Log0(afsd_logp, "CALL Symlink SUCCESS");
3063 lock_ObtainWrite(&dirop.scp->dirlock);
3064 dirop.lockType = CM_DIRLOCK_WRITE;
3066 lock_ObtainMutex(&dscp->mx);
3067 cm_SyncOpDone(dscp, NULL, CM_SCACHESYNC_STOREDATA);
3069 cm_MergeStatus(NULL, dscp, &updatedDirStatus, &volSync, userp, CM_MERGEFLAG_DIROP);
3071 lock_ReleaseMutex(&dscp->mx);
3074 if (cm_CheckDirOpForSingleChange(&dirop)) {
3075 newFid.cell = dscp->fid.cell;
3076 newFid.volume = dscp->fid.volume;
3077 newFid.vnode = newAFSFid.Vnode;
3078 newFid.unique = newAFSFid.Unique;
3080 cm_DirCreateEntry(&dirop, namep, &newFid);
3082 cm_BPlusDirCreateEntry(&dirop, namep, &newFid);
3086 cm_EndDirOp(&dirop);
3088 /* now try to create the new dir's entry, too, but be careful to
3089 * make sure that we don't merge in old info. Since we weren't locking
3090 * out any requests during the file's creation, we may have pretty old
3094 newFid.cell = dscp->fid.cell;
3095 newFid.volume = dscp->fid.volume;
3096 newFid.vnode = newAFSFid.Vnode;
3097 newFid.unique = newAFSFid.Unique;
3098 code = cm_GetSCache(&newFid, &scp, userp, reqp);
3100 lock_ObtainMutex(&scp->mx);
3101 if (!cm_HaveCallback(scp)) {
3102 cm_MergeStatus(dscp, scp, &newLinkStatus, &volSync,
3105 lock_ReleaseMutex(&scp->mx);
3106 cm_ReleaseSCache(scp);
3110 /* and return error code */
3114 long cm_RemoveDir(cm_scache_t *dscp, char *namep, cm_user_t *userp,
3121 AFSFetchStatus updatedDirStatus;
3123 struct rx_connection * callp;
3126 /* before starting the RPC, mark that we're changing the directory data,
3127 * so that someone who does a chmod on the dir will wait until our
3130 cm_BeginDirOp(dscp, userp, reqp, CM_DIRLOCK_NONE, &dirop);
3131 lock_ObtainMutex(&dscp->mx);
3132 code = cm_SyncOp(dscp, NULL, userp, reqp, 0, CM_SCACHESYNC_STOREDATA);
3133 lock_ReleaseMutex(&dscp->mx);
3135 cm_EndDirOp(&dirop);
3140 /* try the RPC now */
3141 osi_Log1(afsd_logp, "CALL RemoveDir scp 0x%p", dscp);
3143 code = cm_ConnFromFID(&dscp->fid, userp, reqp, &connp);
3147 dirAFSFid.Volume = dscp->fid.volume;
3148 dirAFSFid.Vnode = dscp->fid.vnode;
3149 dirAFSFid.Unique = dscp->fid.unique;
3151 callp = cm_GetRxConn(connp);
3152 code = RXAFS_RemoveDir(callp, &dirAFSFid, namep,
3153 &updatedDirStatus, &volSync);
3154 rx_PutConnection(callp);
3156 } while (cm_Analyze(connp, userp, reqp,
3157 &dscp->fid, &volSync, NULL, NULL, code));
3158 code = cm_MapRPCErrorRmdir(code, reqp);
3161 osi_Log1(afsd_logp, "CALL RemoveDir FAILURE, code 0x%x", code);
3163 osi_Log0(afsd_logp, "CALL RemoveDir SUCCESS");
3166 lock_ObtainWrite(&dirop.scp->dirlock);
3167 dirop.lockType = CM_DIRLOCK_WRITE;
3169 lock_ObtainMutex(&dscp->mx);
3170 cm_SyncOpDone(dscp, NULL, CM_SCACHESYNC_STOREDATA);
3172 cm_dnlcRemove(dscp, namep);
3173 cm_MergeStatus(NULL, dscp, &updatedDirStatus, &volSync, userp, CM_MERGEFLAG_DIROP);
3175 lock_ReleaseMutex(&dscp->mx);
3178 if (cm_CheckDirOpForSingleChange(&dirop)) {
3179 cm_DirDeleteEntry(&dirop, namep);
3181 cm_BPlusDirDeleteEntry(&dirop, namep);
3185 cm_EndDirOp(&dirop);
3187 /* and return error code */
3191 long cm_Open(cm_scache_t *scp, int type, cm_user_t *userp)
3193 /* grab mutex on contents */
3194 lock_ObtainMutex(&scp->mx);
3196 /* reset the prefetch info */
3197 scp->prefetch.base.LowPart = 0; /* base */
3198 scp->prefetch.base.HighPart = 0;
3199 scp->prefetch.end.LowPart = 0; /* and end */
3200 scp->prefetch.end.HighPart = 0;
3202 /* release mutex on contents */
3203 lock_ReleaseMutex(&scp->mx);
3209 long cm_Rename(cm_scache_t *oldDscp, char *oldNamep, cm_scache_t *newDscp,
3210 char *newNamep, cm_user_t *userp, cm_req_t *reqp)
3214 AFSFid oldDirAFSFid;
3215 AFSFid newDirAFSFid;
3217 AFSFetchStatus updatedOldDirStatus;
3218 AFSFetchStatus updatedNewDirStatus;
3221 struct rx_connection * callp;
3222 cm_dirOp_t oldDirOp;
3225 cm_dirOp_t newDirOp;
3227 /* before starting the RPC, mark that we're changing the directory data,
3228 * so that someone who does a chmod on the dir will wait until our call
3229 * completes. We do this in vnode order so that we don't deadlock,
3230 * which makes the code a little verbose.
3232 if (oldDscp == newDscp) {
3233 /* check for identical names */
3234 if (strcmp(oldNamep, newNamep) == 0)
3235 return CM_ERROR_RENAME_IDENTICAL;
3238 cm_BeginDirOp(oldDscp, userp, reqp, CM_DIRLOCK_NONE, &oldDirOp);
3239 lock_ObtainMutex(&oldDscp->mx);
3240 cm_dnlcRemove(oldDscp, oldNamep);
3241 cm_dnlcRemove(oldDscp, newNamep);
3242 code = cm_SyncOp(oldDscp, NULL, userp, reqp, 0,
3243 CM_SCACHESYNC_STOREDATA);
3244 lock_ReleaseMutex(&oldDscp->mx);
3246 cm_EndDirOp(&oldDirOp);
3250 /* two distinct dir vnodes */
3252 if (oldDscp->fid.cell != newDscp->fid.cell ||
3253 oldDscp->fid.volume != newDscp->fid.volume)
3254 return CM_ERROR_CROSSDEVLINK;
3256 /* shouldn't happen that we have distinct vnodes for two
3257 * different files, but could due to deliberate attack, or
3258 * stale info. Avoid deadlocks and quit now.
3260 if (oldDscp->fid.vnode == newDscp->fid.vnode)
3261 return CM_ERROR_CROSSDEVLINK;
3263 if (oldDscp->fid.vnode < newDscp->fid.vnode) {
3264 cm_BeginDirOp(oldDscp, userp, reqp, CM_DIRLOCK_NONE, &oldDirOp);
3265 lock_ObtainMutex(&oldDscp->mx);
3266 cm_dnlcRemove(oldDscp, oldNamep);
3267 code = cm_SyncOp(oldDscp, NULL, userp, reqp, 0,
3268 CM_SCACHESYNC_STOREDATA);
3269 lock_ReleaseMutex(&oldDscp->mx);
3271 cm_EndDirOp(&oldDirOp);
3273 cm_BeginDirOp(newDscp, userp, reqp, CM_DIRLOCK_NONE, &newDirOp);
3274 lock_ObtainMutex(&newDscp->mx);
3275 cm_dnlcRemove(newDscp, newNamep);
3276 code = cm_SyncOp(newDscp, NULL, userp, reqp, 0,
3277 CM_SCACHESYNC_STOREDATA);
3278 lock_ReleaseMutex(&newDscp->mx);
3280 cm_EndDirOp(&newDirOp);
3282 /* cleanup first one */
3283 lock_ObtainMutex(&oldDscp->mx);
3284 cm_SyncOpDone(oldDscp, NULL,
3285 CM_SCACHESYNC_STOREDATA);
3286 lock_ReleaseMutex(&oldDscp->mx);
3287 cm_EndDirOp(&oldDirOp);
3292 /* lock the new vnode entry first */
3293 cm_BeginDirOp(newDscp, userp, reqp, CM_DIRLOCK_NONE, &newDirOp);
3294 lock_ObtainMutex(&newDscp->mx);
3295 cm_dnlcRemove(newDscp, newNamep);
3296 code = cm_SyncOp(newDscp, NULL, userp, reqp, 0,
3297 CM_SCACHESYNC_STOREDATA);
3298 lock_ReleaseMutex(&newDscp->mx);
3300 cm_EndDirOp(&newDirOp);
3302 cm_BeginDirOp(oldDscp, userp, reqp, CM_DIRLOCK_NONE, &oldDirOp);
3303 lock_ObtainMutex(&oldDscp->mx);
3304 cm_dnlcRemove(oldDscp, oldNamep);
3305 code = cm_SyncOp(oldDscp, NULL, userp, reqp, 0,
3306 CM_SCACHESYNC_STOREDATA);
3307 lock_ReleaseMutex(&oldDscp->mx);
3309 cm_EndDirOp(&oldDirOp);
3311 /* cleanup first one */
3312 lock_ObtainMutex(&newDscp->mx);
3313 cm_SyncOpDone(newDscp, NULL,
3314 CM_SCACHESYNC_STOREDATA);
3315 lock_ReleaseMutex(&newDscp->mx);
3316 cm_EndDirOp(&newDirOp);
3320 } /* two distinct vnodes */
3327 /* try the RPC now */
3328 osi_Log2(afsd_logp, "CALL Rename old scp 0x%p new scp 0x%p",
3331 code = cm_ConnFromFID(&oldDscp->fid, userp, reqp, &connp);
3335 oldDirAFSFid.Volume = oldDscp->fid.volume;
3336 oldDirAFSFid.Vnode = oldDscp->fid.vnode;
3337 oldDirAFSFid.Unique = oldDscp->fid.unique;
3338 newDirAFSFid.Volume = newDscp->fid.volume;
3339 newDirAFSFid.Vnode = newDscp->fid.vnode;
3340 newDirAFSFid.Unique = newDscp->fid.unique;
3342 callp = cm_GetRxConn(connp);
3343 code = RXAFS_Rename(callp, &oldDirAFSFid, oldNamep,
3344 &newDirAFSFid, newNamep,
3345 &updatedOldDirStatus, &updatedNewDirStatus,
3347 rx_PutConnection(callp);
3349 } while (cm_Analyze(connp, userp, reqp, &oldDscp->fid,
3350 &volSync, NULL, NULL, code));
3351 code = cm_MapRPCError(code, reqp);
3354 osi_Log1(afsd_logp, "CALL Rename FAILURE, code 0x%x", code);
3356 osi_Log0(afsd_logp, "CALL Rename SUCCESS");
3358 /* update the individual stat cache entries for the directories */
3360 lock_ObtainWrite(&oldDirOp.scp->dirlock);
3361 oldDirOp.lockType = CM_DIRLOCK_WRITE;
3363 lock_ObtainMutex(&oldDscp->mx);
3364 cm_SyncOpDone(oldDscp, NULL, CM_SCACHESYNC_STOREDATA);
3367 cm_MergeStatus(NULL, oldDscp, &updatedOldDirStatus, &volSync,
3368 userp, CM_MERGEFLAG_DIROP);
3369 lock_ReleaseMutex(&oldDscp->mx);
3372 if (cm_CheckDirOpForSingleChange(&oldDirOp)) {
3375 diropCode = cm_BPlusDirLookup(&oldDirOp, oldNamep, &fileFid);
3376 if (diropCode == CM_ERROR_INEXACT_MATCH)
3378 else if (diropCode == EINVAL)
3380 diropCode = cm_DirLookup(&oldDirOp, oldNamep, &fileFid);
3382 if (diropCode == 0) {
3384 diropCode = cm_DirCreateEntry(&oldDirOp, newNamep, &fileFid);
3386 cm_BPlusDirCreateEntry(&oldDirOp, newNamep, &fileFid);
3390 if (diropCode == 0) {
3391 diropCode = cm_DirDeleteEntry(&oldDirOp, oldNamep);
3393 cm_BPlusDirDeleteEntry(&oldDirOp, oldNamep);
3399 cm_EndDirOp(&oldDirOp);
3401 /* and update it for the new one, too, if necessary */
3404 lock_ObtainWrite(&newDirOp.scp->dirlock);
3405 newDirOp.lockType = CM_DIRLOCK_WRITE;
3407 lock_ObtainMutex(&newDscp->mx);
3408 cm_SyncOpDone(newDscp, NULL, CM_SCACHESYNC_STOREDATA);
3410 cm_MergeStatus(NULL, newDscp, &updatedNewDirStatus, &volSync,
3411 userp, CM_MERGEFLAG_DIROP);
3412 lock_ReleaseMutex(&newDscp->mx);
3415 /* we only make the local change if we successfully made
3416 the change in the old directory AND there was only one
3417 change in the new directory */
3418 if (diropCode == 0 && cm_CheckDirOpForSingleChange(&newDirOp)) {
3419 cm_DirCreateEntry(&newDirOp, newNamep, &fileFid);
3421 cm_BPlusDirCreateEntry(&newDirOp, newNamep, &fileFid);
3425 cm_EndDirOp(&newDirOp);
3428 /* and return error code */
3432 /* Byte range locks:
3434 The OpenAFS Windows client has to fake byte range locks given no
3435 server side support for such locks. This is implemented as keyed
3436 byte range locks on the cache manager.
3438 Keyed byte range locks:
3440 Each cm_scache_t structure keeps track of a list of keyed locks.
3441 The key for a lock identifies an owner of a set of locks (referred
3442 to as a client). Each key is represented by a value. The set of
3443 key values used within a specific cm_scache_t structure form a
3444 namespace that has a scope of just that cm_scache_t structure. The
3445 same key value can be used with another cm_scache_t structure and
3446 correspond to a completely different client. However it is
3447 advantageous for the SMB or IFS layer to make sure that there is a
3448 1-1 mapping between client and keys over all cm_scache_t objects.
3450 Assume a client C has key Key(C) (although, since the scope of the
3451 key is a cm_scache_t, the key can be Key(C,S), where S is the
3452 cm_scache_t. But assume a 1-1 relation between keys and clients).
3453 A byte range (O,+L) denotes byte addresses (O) through (O+L-1)
3454 inclusive (a.k.a. [O,O+L-1]). The function Key(x) is implemented
3455 through cm_generateKey() function for both SMB and IFS.
3457 The list of locks for a cm_scache_t object S is maintained in
3458 S->fileLocks. The cache manager will set a lock on the AFS file
3459 server in order to assert the locks in S->fileLocks. If only