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, 0);
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 &&
1143 (dscp->flags & (CM_SCACHEFLAG_RO|CM_SCACHEFLAG_PURERO)) == CM_SCACHEFLAG_RO &&
1144 (targetType == RWVOL || targetType == ROVOL && volp->ro.ID == 0)
1146 targetType = BACKVOL;
1148 /* if the mt pt is in a read-only volume (not just a
1149 * backup), and if there is a read-only volume for the
1150 * target, and if this is a targetType '#' mount point, use
1151 * the read-only, otherwise use the one specified.
1153 else if (mtType == '#' && targetType == RWVOL &&
1154 (scp->flags & CM_SCACHEFLAG_PURERO) &&
1158 if (targetType == ROVOL)
1159 scp->mountRootFid.volume = volp->ro.ID;
1160 else if (targetType == BACKVOL)
1161 scp->mountRootFid.volume = volp->bk.ID;
1163 scp->mountRootFid.volume = volp->rw.ID;
1165 /* the rest of the fid is a magic number */
1166 scp->mountRootFid.vnode = 1;
1167 scp->mountRootFid.unique = 1;
1168 scp->mountRootGen = cm_data.mountRootGen;
1170 tfid = scp->mountRootFid;
1171 lock_ReleaseMutex(&scp->mx);
1172 code = cm_GetSCache(&tfid, outScpp, userp, reqp);
1173 lock_ObtainMutex(&scp->mx);
1184 long cm_LookupInternal(cm_scache_t *dscp, char *namep, long flags, cm_user_t *userp,
1185 cm_req_t *reqp, cm_scache_t **outpScpp)
1188 int dnlcHit = 1; /* did we hit in the dnlc? yes, we did */
1189 cm_scache_t *tscp = NULL;
1190 cm_scache_t *mountedScp;
1191 cm_lookupSearch_t rock;
1194 memset(&rock, 0, sizeof(rock));
1196 if (dscp->fid.vnode == 1 && dscp->fid.unique == 1
1197 && strcmp(namep, "..") == 0) {
1198 if (dscp->dotdotFid.volume == 0)
1199 return CM_ERROR_NOSUCHVOLUME;
1200 rock.fid = dscp->dotdotFid;
1202 } else if (strcmp(namep, ".") == 0) {
1203 rock.fid = dscp->fid;
1207 if (flags & CM_FLAG_NOMOUNTCHASE) {
1208 /* In this case, we should go and call cm_Dir* functions
1209 directly since the following cm_ApplyDir() function will
1217 code = cm_BeginDirOp(dscp, userp, reqp, CM_DIRLOCK_READ, &dirop);
1220 code = cm_BPlusDirLookup(&dirop, namep, &rock.fid);
1225 code = cm_DirLookup(&dirop, namep, &rock.fid);
1227 cm_EndDirOp(&dirop);
1237 if (code == CM_ERROR_INEXACT_MATCH && (flags & CM_FLAG_CASEFOLD)) {
1244 return CM_ERROR_BPLUS_NOMATCH;
1249 rock.fid.cell = dscp->fid.cell;
1250 rock.fid.volume = dscp->fid.volume;
1251 rock.searchNamep = namep;
1252 rock.caseFold = (flags & CM_FLAG_CASEFOLD);
1253 rock.hasTilde = ((strchr(namep, '~') != NULL) ? 1 : 0);
1255 /* If NOMOUNTCHASE, bypass DNLC by passing NULL scp pointer */
1256 code = cm_ApplyDir(dscp, cm_LookupSearchProc, &rock, NULL, userp, reqp,
1257 (flags & CM_FLAG_NOMOUNTCHASE) ? NULL : &tscp);
1259 /* code == 0 means we fell off the end of the dir, while stopnow means
1260 * that we stopped early, probably because we found the entry we're
1261 * looking for. Any other non-zero code is an error.
1263 if (code && code != CM_ERROR_STOPNOW) {
1264 /* if the cm_scache_t we are searching in is not a directory
1265 * we must return path not found because the error
1266 * is to describe the final component not an intermediary
1268 if (code == CM_ERROR_NOTDIR) {
1269 if (flags & CM_FLAG_CHECKPATH)
1270 return CM_ERROR_NOSUCHPATH;
1272 return CM_ERROR_NOSUCHFILE;
1277 getroot = (dscp==cm_data.rootSCachep) ;
1279 if (!cm_freelanceEnabled || !getroot) {
1280 if (flags & CM_FLAG_CHECKPATH)
1281 return CM_ERROR_NOSUCHPATH;
1283 return CM_ERROR_NOSUCHFILE;
1285 else { /* nonexistent dir on freelance root, so add it */
1286 char fullname[200] = ".";
1289 osi_Log1(afsd_logp,"cm_Lookup adding mount for non-existent directory: %s",
1290 osi_LogSaveString(afsd_logp,namep));
1293 * There is an ugly behavior where a share name "foo" will be searched
1294 * for as "fo". If the searched for name differs by an already existing
1295 * symlink or mount point in the Freelance directory, do not add the
1296 * new value automatically.
1299 if (namep[0] == '.') {
1300 if (cm_GetCell_Gen(&namep[1], &fullname[1], CM_FLAG_CREATE)) {
1302 if (!cm_FreelanceMountPointExists(fullname, 0))
1303 code = cm_FreelanceAddMount(fullname, &fullname[1], "root.cell.", 1, &rock.fid);
1304 if ( stricmp(&namep[1], &fullname[1]) &&
1305 !cm_FreelanceMountPointExists(namep, flags & CM_FLAG_DFS_REFERRAL ? 1 : 0) &&
1306 !cm_FreelanceSymlinkExists(namep, flags & CM_FLAG_DFS_REFERRAL ? 1 : 0))
1307 code = cm_FreelanceAddSymlink(namep, fullname, &rock.fid);
1310 if (cm_GetCell_Gen(namep, fullname, CM_FLAG_CREATE)) {
1312 if (!cm_FreelanceMountPointExists(fullname, 0))
1313 code = cm_FreelanceAddMount(fullname, fullname, "root.cell.", 0, &rock.fid);
1314 if ( stricmp(namep, fullname) &&
1315 !cm_FreelanceMountPointExists(namep, flags & CM_FLAG_DFS_REFERRAL ? 1 : 0) &&
1316 !cm_FreelanceSymlinkExists(namep, flags & CM_FLAG_DFS_REFERRAL ? 1 : 0))
1317 code = cm_FreelanceAddSymlink(namep, fullname, &rock.fid);
1320 if (!found || code < 0) { /* add mount point failed, so give up */
1321 if (flags & CM_FLAG_CHECKPATH)
1322 return CM_ERROR_NOSUCHPATH;
1324 return CM_ERROR_NOSUCHFILE;
1326 tscp = NULL; /* to force call of cm_GetSCache */
1331 if ( !tscp ) /* we did not find it in the dnlc */
1334 code = cm_GetSCache(&rock.fid, &tscp, userp, reqp);
1338 /* tscp is now held */
1340 lock_ObtainMutex(&tscp->mx);
1341 code = cm_SyncOp(tscp, NULL, userp, reqp, 0,
1342 CM_SCACHESYNC_GETSTATUS | CM_SCACHESYNC_NEEDCALLBACK);
1344 lock_ReleaseMutex(&tscp->mx);
1345 cm_ReleaseSCache(tscp);
1348 cm_SyncOpDone(tscp, NULL, CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS);
1349 /* tscp is now locked */
1351 if (!(flags & CM_FLAG_NOMOUNTCHASE)
1352 && tscp->fileType == CM_SCACHETYPE_MOUNTPOINT) {
1353 /* mount points are funny: they have a volume name to mount
1356 code = cm_ReadMountPoint(tscp, userp, reqp);
1358 code = cm_FollowMountPoint(tscp, dscp, userp, reqp,
1360 lock_ReleaseMutex(&tscp->mx);
1361 cm_ReleaseSCache(tscp);
1368 lock_ReleaseMutex(&tscp->mx);
1371 /* copy back pointer */
1374 /* insert scache in dnlc */
1375 if ( !dnlcHit && !(flags & CM_FLAG_NOMOUNTCHASE) && rock.ExactFound ) {
1376 /* lock the directory entry to prevent racing callback revokes */
1377 lock_ObtainMutex(&dscp->mx);
1378 if ( dscp->cbServerp != NULL && dscp->cbExpires > 0 )
1379 cm_dnlcEnter(dscp, namep, tscp);
1380 lock_ReleaseMutex(&dscp->mx);
1387 int cm_ExpandSysName(char *inp, char *outp, long outSize, unsigned int index)
1392 tp = strrchr(inp, '@');
1394 return 0; /* no @sys */
1396 if (strcmp(tp, "@sys") != 0)
1397 return 0; /* no @sys */
1399 /* caller just wants to know if this is a valid @sys type of name */
1403 if (index >= MAXNUMSYSNAMES)
1406 /* otherwise generate the properly expanded @sys name */
1407 prefixCount = (int)(tp - inp);
1409 strncpy(outp, inp, prefixCount); /* copy out "a." from "a.@sys" */
1410 outp[prefixCount] = 0; /* null terminate the "a." */
1411 strcat(outp, cm_sysNameList[index]);/* append i386_nt40 */
1415 long cm_EvaluateVolumeReference(char * namep, long flags, cm_user_t * userp,
1416 cm_req_t *reqp, cm_scache_t ** outpScpp)
1419 char cellName[CELL_MAXNAMELEN];
1420 char volumeName[VL_MAXNAMELEN];
1425 cm_cell_t * cellp = NULL;
1426 cm_volume_t * volp = NULL;
1429 int mountType = RWVOL;
1431 osi_Log1(afsd_logp, "cm_EvaluateVolumeReference for string [%s]",
1432 osi_LogSaveString(afsd_logp, namep));
1434 if (strnicmp(namep, CM_PREFIX_VOL, CM_PREFIX_VOL_CCH) != 0) {
1435 goto _exit_invalid_path;
1438 /* namep is assumed to look like the following:
1440 @vol:<cellname>%<volume>\0
1442 @vol:<cellname>#<volume>\0
1446 cp = namep + CM_PREFIX_VOL_CCH; /* cp points to cell name, hopefully */
1447 tp = strchr(cp, '%');
1449 tp = strchr(cp, '#');
1451 (len = tp - cp) == 0 ||
1452 len > CELL_MAXNAMELEN)
1453 goto _exit_invalid_path;
1454 strncpy(cellName, cp, len);
1455 cellName[len] = '\0';
1460 cp = tp+1; /* cp now points to volume, supposedly */
1461 strncpy(volumeName, cp, VL_MAXNAMELEN-1);
1462 volumeName[VL_MAXNAMELEN - 1] = 0;
1464 /* OK, now we have the cell and the volume */
1465 osi_Log2(afsd_logp, " Found cell [%s] and volume [%s]",
1466 osi_LogSaveString(afsd_logp, cellName),
1467 osi_LogSaveString(afsd_logp, volumeName));
1469 cellp = cm_GetCell(cellName, CM_FLAG_CREATE);
1470 if (cellp == NULL) {
1471 goto _exit_invalid_path;
1474 len = strlen(volumeName);
1475 if (len >= 8 && strcmp(volumeName + len - 7, ".backup") == 0)
1477 else if (len >= 10 &&
1478 strcmp(volumeName + len - 9, ".readonly") == 0)
1483 if (cm_VolNameIsID(volumeName)) {
1484 code = cm_GetVolumeByID(cellp, atoi(volumeName), userp, reqp,
1485 CM_GETVOL_FLAG_CREATE, &volp);
1487 code = cm_GetVolumeByName(cellp, volumeName, userp, reqp,
1488 CM_GETVOL_FLAG_CREATE, &volp);
1494 fid.cell = cellp->cellID;
1496 if (volType == BACKVOL)
1497 fid.volume = volp->bk.ID;
1498 else if (volType == ROVOL ||
1499 (volType == RWVOL && mountType == ROVOL && volp->ro.ID != 0))
1500 fid.volume = volp->ro.ID;
1502 fid.volume = volp->rw.ID;
1507 code = cm_GetSCache(&fid, outpScpp, userp, reqp);
1517 if (flags & CM_FLAG_CHECKPATH)
1518 return CM_ERROR_NOSUCHPATH;
1520 return CM_ERROR_NOSUCHFILE;
1523 #ifdef DEBUG_REFCOUNT
1524 long cm_LookupDbg(cm_scache_t *dscp, char *namep, long flags, cm_user_t *userp,
1525 cm_req_t *reqp, cm_scache_t **outpScpp, char * file, long line)
1527 long cm_Lookup(cm_scache_t *dscp, char *namep, long flags, cm_user_t *userp,
1528 cm_req_t *reqp, cm_scache_t **outpScpp)
1532 char tname[AFSPATHMAX];
1533 int sysNameIndex = 0;
1534 cm_scache_t *scp = NULL;
1536 #ifdef DEBUG_REFCOUNT
1537 afsi_log("%s:%d cm_Lookup dscp 0x%p ref %d", file, line, dscp, dscp->refCount, file, line);
1538 osi_Log2(afsd_logp, "cm_Lookup dscp 0x%p ref %d", dscp, dscp->refCount);
1541 if ( stricmp(namep,SMB_IOCTL_FILENAME_NOSLASH) == 0 ) {
1542 if (flags & CM_FLAG_CHECKPATH)
1543 return CM_ERROR_NOSUCHPATH;
1545 return CM_ERROR_NOSUCHFILE;
1548 if (dscp == cm_data.rootSCachep &&
1549 strnicmp(namep, CM_PREFIX_VOL, CM_PREFIX_VOL_CCH) == 0) {
1550 return cm_EvaluateVolumeReference(namep, flags, userp, reqp, outpScpp);
1553 if (cm_ExpandSysName(namep, NULL, 0, 0) > 0) {
1554 for ( sysNameIndex = 0; sysNameIndex < MAXNUMSYSNAMES; sysNameIndex++) {
1555 code = cm_ExpandSysName(namep, tname, sizeof(tname), sysNameIndex);
1557 code = cm_LookupInternal(dscp, tname, flags, userp, reqp, &scp);
1558 #ifdef DEBUG_REFCOUNT
1559 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);
1560 osi_Log3(afsd_logp, "cm_LookupInternal (1) code 0x%x dscp 0x%p scp 0x%p", code, dscp, scp);
1568 cm_ReleaseSCache(scp);
1572 code = cm_LookupInternal(dscp, namep, flags, userp, reqp, &scp);
1573 #ifdef DEBUG_REFCOUNT
1574 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);
1575 osi_Log3(afsd_logp, "cm_LookupInternal (2) code 0x%x dscp 0x%p scp 0x%p", code, dscp, scp);
1582 code = cm_LookupInternal(dscp, namep, flags, userp, reqp, &scp);
1583 #ifdef DEBUG_REFCOUNT
1584 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);
1585 osi_Log3(afsd_logp, "cm_LookupInternal (2) code 0x%x dscp 0x%p scp 0x%p", code, dscp, scp);
1591 /* None of the possible sysName expansions could be found */
1592 if (flags & CM_FLAG_CHECKPATH)
1593 return CM_ERROR_NOSUCHPATH;
1595 return CM_ERROR_NOSUCHFILE;
1598 long cm_Unlink(cm_scache_t *dscp, char *namep, cm_user_t *userp, cm_req_t *reqp)
1604 AFSFetchStatus newDirStatus;
1606 struct rx_connection * callp;
1609 #ifdef AFS_FREELANCE_CLIENT
1610 if (cm_freelanceEnabled && dscp == cm_data.rootSCachep) {
1611 /* deleting a mount point from the root dir. */
1612 code = cm_FreelanceRemoveMount(namep);
1617 /* make sure we don't screw up the dir status during the merge */
1618 code = cm_BeginDirOp(dscp, userp, reqp, CM_DIRLOCK_NONE, &dirop);
1620 lock_ObtainMutex(&dscp->mx);
1621 sflags = CM_SCACHESYNC_STOREDATA;
1622 code = cm_SyncOp(dscp, NULL, userp, reqp, 0, sflags);
1623 lock_ReleaseMutex(&dscp->mx);
1625 cm_EndDirOp(&dirop);
1630 afsFid.Volume = dscp->fid.volume;
1631 afsFid.Vnode = dscp->fid.vnode;
1632 afsFid.Unique = dscp->fid.unique;
1634 osi_Log1(afsd_logp, "CALL RemoveFile scp 0x%p", dscp);
1636 code = cm_ConnFromFID(&dscp->fid, userp, reqp, &connp);
1640 callp = cm_GetRxConn(connp);
1641 code = RXAFS_RemoveFile(callp, &afsFid, namep,
1642 &newDirStatus, &volSync);
1643 rx_PutConnection(callp);
1645 } while (cm_Analyze(connp, userp, reqp, &dscp->fid, &volSync, NULL, NULL, code));
1646 code = cm_MapRPCError(code, reqp);
1649 osi_Log1(afsd_logp, "CALL RemoveFile FAILURE, code 0x%x", code);
1651 osi_Log0(afsd_logp, "CALL RemoveFile SUCCESS");
1654 lock_ObtainWrite(&dirop.scp->dirlock);
1655 dirop.lockType = CM_DIRLOCK_WRITE;
1657 lock_ObtainMutex(&dscp->mx);
1658 cm_dnlcRemove(dscp, namep);
1659 cm_SyncOpDone(dscp, NULL, sflags);
1661 cm_MergeStatus(NULL, dscp, &newDirStatus, &volSync, userp, CM_MERGEFLAG_DIROP);
1662 } else if (code == CM_ERROR_NOSUCHFILE) {
1663 /* windows would not have allowed the request to delete the file
1664 * if it did not believe the file existed. therefore, we must
1665 * have an inconsistent view of the world.
1667 dscp->cbServerp = NULL;
1669 lock_ReleaseMutex(&dscp->mx);
1671 if (code == 0 && cm_CheckDirOpForSingleChange(&dirop)) {
1672 cm_DirDeleteEntry(&dirop, namep);
1674 cm_BPlusDirDeleteEntry(&dirop, namep);
1677 cm_EndDirOp(&dirop);
1682 /* called with a locked vnode, and fills in the link info.
1683 * returns this the vnode still locked.
1685 long cm_HandleLink(cm_scache_t *linkScp, cm_user_t *userp, cm_req_t *reqp)
1692 lock_AssertMutex(&linkScp->mx);
1693 if (!linkScp->mountPointStringp[0]) {
1694 /* read the link data */
1695 lock_ReleaseMutex(&linkScp->mx);
1696 thyper.LowPart = thyper.HighPart = 0;
1697 code = buf_Get(linkScp, &thyper, &bufp);
1698 lock_ObtainMutex(&linkScp->mx);
1702 code = cm_SyncOp(linkScp, bufp, userp, reqp, 0,
1703 CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_READ);
1708 cm_SyncOpDone(linkScp, bufp, CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_READ);
1710 if (cm_HaveBuffer(linkScp, bufp, 0))
1713 code = cm_GetBuffer(linkScp, bufp, NULL, userp, reqp);
1718 } /* while loop to get the data */
1720 /* now if we still have no link read in,
1721 * copy the data from the buffer */
1722 if ((temp = linkScp->length.LowPart) >= MOUNTPOINTLEN) {
1724 return CM_ERROR_TOOBIG;
1727 /* otherwise, it fits; make sure it is still null (could have
1728 * lost race with someone else referencing this link above),
1729 * and if so, copy in the data.
1731 if (!linkScp->mountPointStringp[0]) {
1732 strncpy(linkScp->mountPointStringp, bufp->datap, temp);
1733 linkScp->mountPointStringp[temp] = 0; /* null terminate */
1735 if ( !strnicmp(linkScp->mountPointStringp, "msdfs:", strlen("msdfs:")) )
1736 linkScp->fileType = CM_SCACHETYPE_DFSLINK;
1739 } /* don't have sym link contents cached */
1744 /* called with a held vnode and a path suffix, with the held vnode being a
1745 * symbolic link. Our goal is to generate a new path to interpret, and return
1746 * this new path in newSpaceBufferp. If the new vnode is relative to a dir
1747 * other than the directory containing the symbolic link, then the new root is
1748 * returned in *newRootScpp, otherwise a null is returned there.
1750 long cm_AssembleLink(cm_scache_t *linkScp, char *pathSuffixp,
1751 cm_scache_t **newRootScpp, cm_space_t **newSpaceBufferp,
1752 cm_user_t *userp, cm_req_t *reqp)
1759 *newRootScpp = NULL;
1760 *newSpaceBufferp = NULL;
1762 lock_ObtainMutex(&linkScp->mx);
1763 code = cm_HandleLink(linkScp, userp, reqp);
1767 /* if we may overflow the buffer, bail out; buffer is signficantly
1768 * bigger than max path length, so we don't really have to worry about
1769 * being a little conservative here.
1771 if (strlen(linkScp->mountPointStringp) + strlen(pathSuffixp) + 2
1772 >= CM_UTILS_SPACESIZE)
1773 return CM_ERROR_TOOBIG;
1775 tsp = cm_GetSpace();
1776 linkp = linkScp->mountPointStringp;
1777 if (strncmp(linkp, cm_mountRoot, cm_mountRootLen) == 0) {
1778 if (strlen(linkp) > cm_mountRootLen)
1779 strcpy(tsp->data, linkp+cm_mountRootLen+1);
1782 *newRootScpp = cm_data.rootSCachep;
1783 cm_HoldSCache(cm_data.rootSCachep);
1784 } else if (linkp[0] == '\\' && linkp[1] == '\\') {
1785 if (!strnicmp(&linkp[2], cm_NetbiosName, (len = (long)strlen(cm_NetbiosName))))
1787 char * p = &linkp[len + 3];
1788 if (strnicmp(p, "all", 3) == 0)
1791 strcpy(tsp->data, p);
1792 for (p = tsp->data; *p; p++) {
1796 *newRootScpp = cm_data.rootSCachep;
1797 cm_HoldSCache(cm_data.rootSCachep);
1799 linkScp->fileType = CM_SCACHETYPE_DFSLINK;
1800 strcpy(tsp->data, linkp);
1801 code = CM_ERROR_PATH_NOT_COVERED;
1803 } else if ( linkScp->fileType == CM_SCACHETYPE_DFSLINK ||
1804 !strnicmp(linkp, "msdfs:", (len = (long)strlen("msdfs:"))) ) {
1805 linkScp->fileType = CM_SCACHETYPE_DFSLINK;
1806 strcpy(tsp->data, linkp);
1807 code = CM_ERROR_PATH_NOT_COVERED;
1808 } else if (*linkp == '\\' || *linkp == '/') {
1810 /* formerly, this was considered to be from the AFS root,
1811 * but this seems to create problems. instead, we will just
1812 * reject the link */
1813 strcpy(tsp->data, linkp+1);
1814 *newRootScpp = cm_data.rootSCachep;
1815 cm_HoldSCache(cm_data.rootSCachep);
1817 /* we still copy the link data into the response so that
1818 * the user can see what the link points to
1820 linkScp->fileType = CM_SCACHETYPE_INVALID;
1821 strcpy(tsp->data, linkp);
1822 code = CM_ERROR_NOSUCHPATH;
1825 /* a relative link */
1826 strcpy(tsp->data, linkp);
1828 if (pathSuffixp[0] != 0) { /* if suffix string is non-null */
1829 strcat(tsp->data, "\\");
1830 strcat(tsp->data, pathSuffixp);
1833 *newSpaceBufferp = tsp;
1837 if (code == CM_ERROR_PATH_NOT_COVERED && reqp->tidPathp && reqp->relPathp)
1838 cm_VolStatus_Notify_DFS_Mapping(linkScp, reqp->tidPathp, reqp->relPathp);
1842 lock_ReleaseMutex(&linkScp->mx);
1845 #ifdef DEBUG_REFCOUNT
1846 long cm_NameIDbg(cm_scache_t *rootSCachep, char *pathp, long flags,
1847 cm_user_t *userp, char *tidPathp, cm_req_t *reqp, cm_scache_t **outScpp,
1848 char * file, long line)
1850 long cm_NameI(cm_scache_t *rootSCachep, char *pathp, long flags,
1851 cm_user_t *userp, char *tidPathp, cm_req_t *reqp, cm_scache_t **outScpp)
1855 char *tp; /* ptr moving through input buffer */
1856 char tc; /* temp char */
1857 int haveComponent; /* has new component started? */
1858 char component[AFSPATHMAX]; /* this is the new component */
1859 char *cp; /* component name being assembled */
1860 cm_scache_t *tscp; /* current location in the hierarchy */
1861 cm_scache_t *nscp; /* next dude down */
1862 cm_scache_t *dirScp; /* last dir we searched */
1863 cm_scache_t *linkScp; /* new root for the symlink we just
1865 cm_space_t *psp; /* space for current path, if we've hit
1867 cm_space_t *tempsp; /* temp vbl */
1868 char *restp; /* rest of the pathname to interpret */
1869 int symlinkCount; /* count of # of symlinks traversed */
1870 int extraFlag; /* avoid chasing mt pts for dir cmd */
1871 int phase = 1; /* 1 = tidPathp, 2 = pathp */
1872 #define MAX_FID_COUNT 512
1873 cm_fid_t fids[MAX_FID_COUNT]; /* array of fids processed in this path walk */
1874 int fid_count = 0; /* number of fids processed in this path walk */
1877 #ifdef DEBUG_REFCOUNT
1878 afsi_log("%s:%d cm_NameI rootscp 0x%p ref %d", file, line, rootSCachep, rootSCachep->refCount);
1879 osi_Log4(afsd_logp,"cm_NameI rootscp 0x%p path %s tidpath %s flags 0x%x",
1880 rootSCachep, pathp ? pathp : "<NULL>", tidPathp ? tidPathp : "<NULL>",
1895 cm_HoldSCache(tscp);
1903 /* map Unix slashes into DOS ones so we can interpret Unix
1909 if (!haveComponent) {
1912 } else if (tc == 0) {
1926 /* we have a component here */
1927 if (tc == 0 || tc == '\\') {
1928 /* end of the component; we're at the last
1929 * component if tc == 0. However, if the last
1930 * is a symlink, we have more to do.
1932 *cp++ = 0; /* add null termination */
1934 if ((flags & CM_FLAG_DIRSEARCH) && tc == 0)
1935 extraFlag = CM_FLAG_NOMOUNTCHASE;
1936 code = cm_Lookup(tscp, component,
1938 userp, reqp, &nscp);
1941 if (!strcmp(component,"..") || !strcmp(component,".")) {
1943 * roll back the fid list until we find the fid
1944 * that matches where we are now. Its not necessarily
1945 * one or two fids because they might have been
1946 * symlinks or mount points or both that were crossed.
1948 for ( i=fid_count-1; i>=0; i--) {
1949 if (!cm_FidCmp(&nscp->fid, &fids[i]))
1954 /* add the new fid to the list */
1955 for ( i=0; i<fid_count; i++) {
1956 if ( !cm_FidCmp(&nscp->fid, &fids[i]) ) {
1957 code = CM_ERROR_TOO_MANY_SYMLINKS;
1958 cm_ReleaseSCache(nscp);
1963 if (i == fid_count && fid_count < MAX_FID_COUNT) {
1964 fids[fid_count++] = nscp->fid;
1970 cm_ReleaseSCache(tscp);
1972 cm_ReleaseSCache(dirScp);
1975 if ((code == CM_ERROR_NOSUCHFILE || code == CM_ERROR_BPLUS_NOMATCH) &&
1976 tscp->fileType == CM_SCACHETYPE_SYMLINK)
1978 osi_Log0(afsd_logp,"cm_NameI code CM_ERROR_NOSUCHPATH");
1979 return CM_ERROR_NOSUCHPATH;
1981 osi_Log1(afsd_logp,"cm_NameI code 0x%x", code);
1986 haveComponent = 0; /* component done */
1988 cm_ReleaseSCache(dirScp);
1989 dirScp = tscp; /* for some symlinks */
1990 tscp = nscp; /* already held */
1992 if (tc == 0 && !(flags & CM_FLAG_FOLLOW) && phase == 2) {
1995 cm_ReleaseSCache(dirScp);
2001 /* now, if tscp is a symlink, we should follow
2002 * it and assemble the path again.
2004 lock_ObtainMutex(&tscp->mx);
2005 code = cm_SyncOp(tscp, NULL, userp, reqp, 0,
2006 CM_SCACHESYNC_GETSTATUS
2007 | CM_SCACHESYNC_NEEDCALLBACK);
2009 lock_ReleaseMutex(&tscp->mx);
2010 cm_ReleaseSCache(tscp);
2013 cm_ReleaseSCache(dirScp);
2018 cm_SyncOpDone(tscp, NULL, CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS);
2020 if (tscp->fileType == CM_SCACHETYPE_SYMLINK) {
2021 /* this is a symlink; assemble a new buffer */
2022 lock_ReleaseMutex(&tscp->mx);
2023 if (symlinkCount++ >= MAX_SYMLINK_COUNT) {
2024 cm_ReleaseSCache(tscp);
2027 cm_ReleaseSCache(dirScp);
2032 osi_Log0(afsd_logp,"cm_NameI code CM_ERROR_TOO_MANY_SYMLINKS");
2033 return CM_ERROR_TOO_MANY_SYMLINKS;
2039 code = cm_AssembleLink(tscp, restp, &linkScp, &tempsp, userp, reqp);
2041 if (code == 0 && linkScp != NULL) {
2042 if (linkScp == cm_data.rootSCachep)
2045 for ( i=0; i<fid_count; i++) {
2046 if ( !cm_FidCmp(&linkScp->fid, &fids[i]) ) {
2047 code = CM_ERROR_TOO_MANY_SYMLINKS;
2048 cm_ReleaseSCache(linkScp);
2054 if (i == fid_count && fid_count < MAX_FID_COUNT) {
2055 fids[fid_count++] = linkScp->fid;
2060 /* something went wrong */
2061 cm_ReleaseSCache(tscp);
2064 cm_ReleaseSCache(dirScp);
2070 /* otherwise, tempsp has the new path,
2071 * and linkScp is the new root from
2072 * which to interpret that path.
2073 * Continue with the namei processing,
2074 * also doing the bookkeeping for the
2075 * space allocation and tracking the
2076 * vnode reference counts.
2082 cm_ReleaseSCache(tscp);
2087 * now, if linkScp is null, that's
2088 * AssembleLink's way of telling us that
2089 * the sym link is relative to the dir
2090 * containing the link. We have a ref
2091 * to it in dirScp, and we hold it now
2092 * and reuse it as the new spot in the
2100 /* not a symlink, we may be done */
2101 lock_ReleaseMutex(&tscp->mx);
2109 cm_ReleaseSCache(dirScp);
2117 cm_ReleaseSCache(dirScp);
2120 } /* end of a component */
2123 } /* we have a component */
2124 } /* big while loop over all components */
2128 cm_ReleaseSCache(dirScp);
2134 cm_ReleaseSCache(tscp);
2136 #ifdef DEBUG_REFCOUNT
2137 afsi_log("%s:%d cm_NameI code 0x%x outScpp 0x%p ref %d", file, line, code, *outScpp, (*outScpp)->refCount);
2139 osi_Log2(afsd_logp,"cm_NameI code 0x%x outScpp 0x%p", code, *outScpp);
2143 /* called with a dir, and a vnode within the dir that happens to be a symlink.
2144 * We chase the link, and return a held pointer to the target, if it exists,
2145 * in *outScpp. If we succeed, we return 0, otherwise we return an error code
2146 * and do not hold or return a target vnode.
2148 * This is very similar to calling cm_NameI with the last component of a name,
2149 * which happens to be a symlink, except that we've already passed by the name.
2151 * This function is typically called by the directory listing functions, which
2152 * encounter symlinks but need to return the proper file length so programs
2153 * like "more" work properly when they make use of the attributes retrieved from
2156 * The input vnode should not be locked when this function is called.
2158 long cm_EvaluateSymLink(cm_scache_t *dscp, cm_scache_t *linkScp,
2159 cm_scache_t **outScpp, cm_user_t *userp, cm_req_t *reqp)
2163 cm_scache_t *newRootScp;
2165 osi_Log1(afsd_logp, "Evaluating symlink scp 0x%p", linkScp);
2167 code = cm_AssembleLink(linkScp, "", &newRootScp, &spacep, userp, reqp);
2171 /* now, if newRootScp is NULL, we're really being told that the symlink
2172 * is relative to the current directory (dscp).
2174 if (newRootScp == NULL) {
2176 cm_HoldSCache(dscp);
2179 code = cm_NameI(newRootScp, spacep->data,
2180 CM_FLAG_CASEFOLD | CM_FLAG_FOLLOW | CM_FLAG_DIRSEARCH,
2181 userp, NULL, reqp, outScpp);
2183 if (code == CM_ERROR_NOSUCHFILE || code == CM_ERROR_BPLUS_NOMATCH)
2184 code = CM_ERROR_NOSUCHPATH;
2186 /* this stuff is allocated no matter what happened on the namei call,
2188 cm_FreeSpace(spacep);
2189 cm_ReleaseSCache(newRootScp);
2191 if (linkScp == *outScpp) {
2192 cm_ReleaseSCache(*outScpp);
2194 code = CM_ERROR_NOSUCHPATH;
2200 /* make this big enough so that one buffer of dir pages won't overflow. We'll
2201 * check anyway, but we want to minimize the chance that we have to leave stuff
2204 #define CM_BULKMAX (3 * AFSCBMAX)
2206 /* rock for bulk stat calls */
2207 typedef struct cm_bulkStat {
2208 osi_hyper_t bufOffset; /* only do it for things in this buffer page */
2210 /* info for the actual call */
2211 int counter; /* next free slot */
2212 AFSFid fids[CM_BULKMAX];
2213 AFSFetchStatus stats[CM_BULKMAX];
2214 AFSCallBack callbacks[CM_BULKMAX];
2217 /* for a given entry, make sure that it isn't in the stat cache, and then
2218 * add it to the list of file IDs to be obtained.
2220 * Don't bother adding it if we already have a vnode. Note that the dir
2221 * is locked, so we have to be careful checking the vnode we're thinking of
2222 * processing, to avoid deadlocks.
2224 long cm_TryBulkProc(cm_scache_t *scp, cm_dirEntry_t *dep, void *rockp,
2235 /* Don't overflow bsp. */
2236 if (bsp->counter >= CM_BULKMAX)
2237 return CM_ERROR_STOPNOW;
2239 thyper.LowPart = cm_data.buf_blockSize;
2240 thyper.HighPart = 0;
2241 thyper = LargeIntegerAdd(thyper, bsp->bufOffset);
2243 /* thyper is now the first byte past the end of the record we're
2244 * interested in, and bsp->bufOffset is the first byte of the record
2245 * we're interested in.
2246 * Skip data in the others.
2249 if (LargeIntegerLessThan(*offp, bsp->bufOffset))
2251 if (LargeIntegerGreaterThanOrEqualTo(*offp, thyper))
2252 return CM_ERROR_STOPNOW;
2253 if (strcmp(dep->name, ".") == 0 || strcmp(dep->name, "..") == 0)
2256 tfid.cell = scp->fid.cell;
2257 tfid.volume = scp->fid.volume;
2258 tfid.vnode = ntohl(dep->fid.vnode);
2259 tfid.unique = ntohl(dep->fid.unique);
2260 tscp = cm_FindSCache(&tfid);
2262 if (lock_TryMutex(&tscp->mx)) {
2263 /* we have an entry that we can look at */
2264 if (!(tscp->flags & CM_SCACHEFLAG_EACCESS) && cm_HaveCallback(tscp)) {
2265 /* we have a callback on it. Don't bother
2266 * fetching this stat entry, since we're happy
2267 * with the info we have.
2269 lock_ReleaseMutex(&tscp->mx);
2270 cm_ReleaseSCache(tscp);
2273 lock_ReleaseMutex(&tscp->mx);
2275 cm_ReleaseSCache(tscp);
2278 #ifdef AFS_FREELANCE_CLIENT
2279 // yj: if this is a mountpoint under root.afs then we don't want it
2280 // to be bulkstat-ed, instead, we call getSCache directly and under
2281 // getSCache, it is handled specially.
2282 if ( cm_freelanceEnabled &&
2283 tfid.cell==AFS_FAKE_ROOT_CELL_ID &&
2284 tfid.volume==AFS_FAKE_ROOT_VOL_ID &&
2285 !(tfid.vnode==0x1 && tfid.unique==0x1) )
2287 osi_Log0(afsd_logp, "cm_TryBulkProc Freelance calls cm_SCache on root.afs mountpoint");
2288 return cm_GetSCache(&tfid, &tscp, NULL, NULL);
2290 #endif /* AFS_FREELANCE_CLIENT */
2293 bsp->fids[i].Volume = scp->fid.volume;
2294 bsp->fids[i].Vnode = tfid.vnode;
2295 bsp->fids[i].Unique = tfid.unique;
2299 /* called with a locked scp and a pointer to a buffer. Make bulk stat
2300 * calls on all undeleted files in the page of the directory specified.
2303 cm_TryBulkStat(cm_scache_t *dscp, osi_hyper_t *offsetp, cm_user_t *userp,
2307 cm_bulkStat_t bb; /* this is *BIG*, probably 16K or so;
2308 * watch for stack problems */
2309 AFSCBFids fidStruct;
2310 AFSBulkStats statStruct;
2312 AFSCBs callbackStruct;
2315 cm_callbackRequest_t cbReq;
2321 struct rx_connection * callp;
2322 int inlinebulk = 0; /* Did we use InlineBulkStatus RPC or not? */
2324 osi_Log1(afsd_logp, "cm_TryBulkStat dir 0x%p", dscp);
2326 /* should be on a buffer boundary */
2327 osi_assertx((offsetp->LowPart & (cm_data.buf_blockSize - 1)) == 0, "invalid offset");
2329 memset(&bb, 0, sizeof(bb));
2330 bb.bufOffset = *offsetp;
2332 lock_ReleaseMutex(&dscp->mx);
2333 /* first, assemble the file IDs we need to stat */
2334 code = cm_ApplyDir(dscp, cm_TryBulkProc, (void *) &bb, offsetp, userp, reqp, NULL);
2336 /* if we failed, bail out early */
2337 if (code && code != CM_ERROR_STOPNOW) {
2338 lock_ObtainMutex(&dscp->mx);
2342 /* otherwise, we may have one or more bulk stat's worth of stuff in bb;
2343 * make the calls to create the entries. Handle AFSCBMAX files at a
2347 while (filex < bb.counter) {
2348 filesThisCall = bb.counter - filex;
2349 if (filesThisCall > AFSCBMAX)
2350 filesThisCall = AFSCBMAX;
2352 fidStruct.AFSCBFids_len = filesThisCall;
2353 fidStruct.AFSCBFids_val = &bb.fids[filex];
2354 statStruct.AFSBulkStats_len = filesThisCall;
2355 statStruct.AFSBulkStats_val = &bb.stats[filex];
2356 callbackStruct.AFSCBs_len = filesThisCall;
2357 callbackStruct.AFSCBs_val = &bb.callbacks[filex];
2358 cm_StartCallbackGrantingCall(NULL, &cbReq);
2359 osi_Log1(afsd_logp, "CALL BulkStatus, %d entries", filesThisCall);
2361 code = cm_ConnFromFID(&dscp->fid, userp, reqp, &connp);
2365 callp = cm_GetRxConn(connp);
2366 if (!(connp->serverp->flags & CM_SERVERFLAG_NOINLINEBULK)) {
2367 code = RXAFS_InlineBulkStatus(callp, &fidStruct,
2368 &statStruct, &callbackStruct, &volSync);
2369 if (code == RXGEN_OPCODE) {
2370 cm_SetServerNoInlineBulk(connp->serverp, 0);
2376 code = RXAFS_BulkStatus(callp, &fidStruct,
2377 &statStruct, &callbackStruct, &volSync);
2379 rx_PutConnection(callp);
2381 } while (cm_Analyze(connp, userp, reqp, &dscp->fid,
2382 &volSync, NULL, &cbReq, code));
2383 code = cm_MapRPCError(code, reqp);
2385 osi_Log2(afsd_logp, "CALL %sBulkStatus FAILURE code 0x%x",
2386 inlinebulk ? "Inline" : "", code);
2388 osi_Log1(afsd_logp, "CALL %sBulkStatus SUCCESS", inlinebulk ? "Inline" : "");
2390 /* may as well quit on an error, since we're not going to do
2391 * much better on the next immediate call, either.
2394 cm_EndCallbackGrantingCall(NULL, &cbReq, NULL, 0);
2398 /* otherwise, we should do the merges */
2399 for (i = 0; i<filesThisCall; i++) {
2401 tfid.cell = dscp->fid.cell;
2402 tfid.volume = bb.fids[j].Volume;
2403 tfid.vnode = bb.fids[j].Vnode;
2404 tfid.unique = bb.fids[j].Unique;
2405 code = cm_GetSCache(&tfid, &scp, userp, reqp);
2409 /* otherwise, if this entry has no callback info,
2412 lock_ObtainMutex(&scp->mx);
2413 /* now, we have to be extra paranoid on merging in this
2414 * information, since we didn't use cm_SyncOp before
2415 * starting the fetch to make sure that no bad races
2416 * were occurring. Specifically, we need to make sure
2417 * we don't obliterate any newer information in the
2418 * vnode than have here.
2420 * Right now, be pretty conservative: if there's a
2421 * callback or a pending call, skip it.
2423 if ((scp->cbServerp == NULL || (scp->flags & CM_SCACHEFLAG_EACCESS))
2425 (CM_SCACHEFLAG_FETCHING
2426 | CM_SCACHEFLAG_STORING
2427 | CM_SCACHEFLAG_SIZESTORING))) {
2428 cm_EndCallbackGrantingCall(scp, &cbReq,
2430 CM_CALLBACK_MAINTAINCOUNT);
2431 cm_MergeStatus(dscp, scp, &bb.stats[j], &volSync, userp, 0);
2433 lock_ReleaseMutex(&scp->mx);
2434 cm_ReleaseSCache(scp);
2435 } /* all files in the response */
2436 /* now tell it to drop the count,
2437 * after doing the vnode processing above */
2438 cm_EndCallbackGrantingCall(NULL, &cbReq, NULL, 0);
2440 filex += filesThisCall;
2441 } /* while there are still more files to process */
2442 lock_ObtainMutex(&dscp->mx);
2444 /* If we did the InlineBulk RPC pull out the return code and log it */
2446 if ((&bb.stats[0])->errorCode) {
2447 osi_Log1(afsd_logp, "cm_TryBulkStat bulk stat error: %d",
2448 (&bb.stats[0])->errorCode);
2452 osi_Log0(afsd_logp, "END cm_TryBulkStat");
2456 void cm_StatusFromAttr(AFSStoreStatus *statusp, cm_scache_t *scp, cm_attr_t *attrp)
2460 /* initialize store back mask as inexpensive local variable */
2462 memset(statusp, 0, sizeof(AFSStoreStatus));
2464 /* copy out queued info from scache first, if scp passed in */
2466 if (scp->mask & CM_SCACHEMASK_CLIENTMODTIME) {
2467 statusp->ClientModTime = scp->clientModTime;
2468 mask |= AFS_SETMODTIME;
2469 scp->mask &= ~CM_SCACHEMASK_CLIENTMODTIME;
2474 /* now add in our locally generated request */
2475 if (attrp->mask & CM_ATTRMASK_CLIENTMODTIME) {
2476 statusp->ClientModTime = attrp->clientModTime;
2477 mask |= AFS_SETMODTIME;
2479 if (attrp->mask & CM_ATTRMASK_UNIXMODEBITS) {
2480 statusp->UnixModeBits = attrp->unixModeBits;
2481 mask |= AFS_SETMODE;
2483 if (attrp->mask & CM_ATTRMASK_OWNER) {
2484 statusp->Owner = attrp->owner;
2485 mask |= AFS_SETOWNER;
2487 if (attrp->mask & CM_ATTRMASK_GROUP) {
2488 statusp->Group = attrp->group;
2489 mask |= AFS_SETGROUP;
2492 statusp->Mask = mask;
2495 /* set the file size, and make sure that all relevant buffers have been
2496 * truncated. Ensure that any partially truncated buffers have been zeroed
2497 * to the end of the buffer.
2499 long cm_SetLength(cm_scache_t *scp, osi_hyper_t *sizep, cm_user_t *userp,
2505 /* start by locking out buffer creation */
2506 lock_ObtainWrite(&scp->bufCreateLock);
2508 /* verify that this is a file, not a dir or a symlink */
2509 lock_ObtainMutex(&scp->mx);
2510 code = cm_SyncOp(scp, NULL, userp, reqp, 0,
2511 CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS);
2514 cm_SyncOpDone(scp, NULL, CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS);
2516 if (scp->fileType != CM_SCACHETYPE_FILE) {
2517 code = CM_ERROR_ISDIR;
2522 if (LargeIntegerLessThan(*sizep, scp->length))
2527 lock_ReleaseMutex(&scp->mx);
2529 /* can't hold scp->mx lock here, since we may wait for a storeback to
2530 * finish if the buffer package is cleaning a buffer by storing it to
2534 buf_Truncate(scp, userp, reqp, sizep);
2536 /* now ensure that file length is short enough, and update truncPos */
2537 lock_ObtainMutex(&scp->mx);
2539 /* make sure we have a callback (so we have the right value for the
2540 * length), and wait for it to be safe to do a truncate.
2542 code = cm_SyncOp(scp, NULL, userp, reqp, PRSFS_WRITE,
2543 CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS
2544 | CM_SCACHESYNC_SETSTATUS | CM_SCACHESYNC_SETSIZE);
2546 /* If we only have 'i' bits, then we should still be able to set
2547 the size of a file we created. */
2548 if (code == CM_ERROR_NOACCESS && scp->creator == userp) {
2549 code = cm_SyncOp(scp, NULL, userp, reqp, PRSFS_INSERT,
2550 CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS
2551 | CM_SCACHESYNC_SETSTATUS | CM_SCACHESYNC_SETSIZE);
2557 if (LargeIntegerLessThan(*sizep, scp->length)) {
2558 /* a real truncation. If truncPos is not set yet, or is bigger
2559 * than where we're truncating the file, set truncPos to this
2564 if (!(scp->mask & CM_SCACHEMASK_TRUNCPOS)
2565 || LargeIntegerLessThan(*sizep, scp->length)) {
2567 scp->truncPos = *sizep;
2568 scp->mask |= CM_SCACHEMASK_TRUNCPOS;
2570 /* in either case, the new file size has been changed */
2571 scp->length = *sizep;
2572 scp->mask |= CM_SCACHEMASK_LENGTH;
2574 else if (LargeIntegerGreaterThan(*sizep, scp->length)) {
2575 /* really extending the file */
2576 scp->length = *sizep;
2577 scp->mask |= CM_SCACHEMASK_LENGTH;
2580 /* done successfully */
2583 cm_SyncOpDone(scp, NULL,
2584 CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS
2585 | CM_SCACHESYNC_SETSTATUS | CM_SCACHESYNC_SETSIZE);
2588 lock_ReleaseMutex(&scp->mx);
2589 lock_ReleaseWrite(&scp->bufCreateLock);
2594 /* set the file size or other attributes (but not both at once) */
2595 long cm_SetAttr(cm_scache_t *scp, cm_attr_t *attrp, cm_user_t *userp,
2599 AFSFetchStatus afsOutStatus;
2603 AFSStoreStatus afsInStatus;
2604 struct rx_connection * callp;
2606 /* handle file length setting */
2607 if (attrp->mask & CM_ATTRMASK_LENGTH)
2608 return cm_SetLength(scp, &attrp->length, userp, reqp);
2610 lock_ObtainMutex(&scp->mx);
2611 /* otherwise, we have to make an RPC to get the status */
2612 code = cm_SyncOp(scp, NULL, userp, reqp, 0, CM_SCACHESYNC_STORESTATUS);
2614 lock_ReleaseMutex(&scp->mx);
2618 /* make the attr structure */
2619 cm_StatusFromAttr(&afsInStatus, scp, attrp);
2621 tfid.Volume = scp->fid.volume;
2622 tfid.Vnode = scp->fid.vnode;
2623 tfid.Unique = scp->fid.unique;
2624 lock_ReleaseMutex(&scp->mx);
2626 /* now make the RPC */
2627 osi_Log1(afsd_logp, "CALL StoreStatus scp 0x%p", scp);
2629 code = cm_ConnFromFID(&scp->fid, userp, reqp, &connp);
2633 callp = cm_GetRxConn(connp);
2634 code = RXAFS_StoreStatus(callp, &tfid,
2635 &afsInStatus, &afsOutStatus, &volSync);
2636 rx_PutConnection(callp);
2638 } while (cm_Analyze(connp, userp, reqp,
2639 &scp->fid, &volSync, NULL, NULL, code));
2640 code = cm_MapRPCError(code, reqp);
2643 osi_Log1(afsd_logp, "CALL StoreStatus FAILURE, code 0x%x", code);
2645 osi_Log0(afsd_logp, "CALL StoreStatus SUCCESS");
2647 lock_ObtainMutex(&scp->mx);
2648 cm_SyncOpDone(scp, NULL, CM_SCACHESYNC_STORESTATUS);
2650 cm_MergeStatus(NULL, scp, &afsOutStatus, &volSync, userp,
2651 CM_MERGEFLAG_FORCE|CM_MERGEFLAG_STOREDATA);
2653 /* if we're changing the mode bits, discard the ACL cache,
2654 * since we changed the mode bits.
2656 if (afsInStatus.Mask & AFS_SETMODE)
2657 cm_FreeAllACLEnts(scp);
2658 lock_ReleaseMutex(&scp->mx);
2662 long cm_Create(cm_scache_t *dscp, char *namep, long flags, cm_attr_t *attrp,
2663 cm_scache_t **scpp, cm_user_t *userp, cm_req_t *reqp)
2668 cm_callbackRequest_t cbReq;
2671 cm_scache_t *scp = NULL;
2673 AFSStoreStatus inStatus;
2674 AFSFetchStatus updatedDirStatus;
2675 AFSFetchStatus newFileStatus;
2676 AFSCallBack newFileCallback;
2678 struct rx_connection * callp;
2681 /* can't create names with @sys in them; must expand it manually first.
2682 * return "invalid request" if they try.
2684 if (cm_ExpandSysName(namep, NULL, 0, 0)) {
2685 return CM_ERROR_ATSYS;
2688 /* before starting the RPC, mark that we're changing the file data, so
2689 * that someone who does a chmod will know to wait until our call
2692 cm_BeginDirOp(dscp, userp, reqp, CM_DIRLOCK_NONE, &dirop);
2693 lock_ObtainMutex(&dscp->mx);
2694 code = cm_SyncOp(dscp, NULL, userp, reqp, 0, CM_SCACHESYNC_STOREDATA);
2695 lock_ReleaseMutex(&dscp->mx);
2697 cm_StartCallbackGrantingCall(NULL, &cbReq);
2699 cm_EndDirOp(&dirop);
2706 cm_StatusFromAttr(&inStatus, NULL, attrp);
2708 /* try the RPC now */
2709 osi_Log1(afsd_logp, "CALL CreateFile scp 0x%p", dscp);
2711 code = cm_ConnFromFID(&dscp->fid, userp, reqp, &connp);
2715 dirAFSFid.Volume = dscp->fid.volume;
2716 dirAFSFid.Vnode = dscp->fid.vnode;
2717 dirAFSFid.Unique = dscp->fid.unique;
2719 callp = cm_GetRxConn(connp);
2720 code = RXAFS_CreateFile(connp->callp, &dirAFSFid, namep,
2721 &inStatus, &newAFSFid, &newFileStatus,
2722 &updatedDirStatus, &newFileCallback,
2724 rx_PutConnection(callp);
2726 } while (cm_Analyze(connp, userp, reqp,
2727 &dscp->fid, &volSync, NULL, &cbReq, code));
2728 code = cm_MapRPCError(code, reqp);
2731 osi_Log1(afsd_logp, "CALL CreateFile FAILURE, code 0x%x", code);
2733 osi_Log0(afsd_logp, "CALL CreateFile SUCCESS");
2736 lock_ObtainWrite(&dirop.scp->dirlock);
2737 dirop.lockType = CM_DIRLOCK_WRITE;
2739 lock_ObtainMutex(&dscp->mx);
2740 cm_SyncOpDone(dscp, NULL, CM_SCACHESYNC_STOREDATA);
2742 cm_MergeStatus(NULL, dscp, &updatedDirStatus, &volSync, userp, CM_MERGEFLAG_DIROP);
2744 lock_ReleaseMutex(&dscp->mx);
2746 /* now try to create the file's entry, too, but be careful to
2747 * make sure that we don't merge in old info. Since we weren't locking
2748 * out any requests during the file's creation, we may have pretty old
2752 newFid.cell = dscp->fid.cell;
2753 newFid.volume = dscp->fid.volume;
2754 newFid.vnode = newAFSFid.Vnode;
2755 newFid.unique = newAFSFid.Unique;
2756 code = cm_GetSCache(&newFid, &scp, userp, reqp);
2758 lock_ObtainMutex(&scp->mx);
2759 scp->creator = userp; /* remember who created it */
2760 if (!cm_HaveCallback(scp)) {
2761 cm_MergeStatus(dscp, scp, &newFileStatus, &volSync,
2763 cm_EndCallbackGrantingCall(scp, &cbReq,
2764 &newFileCallback, 0);
2767 lock_ReleaseMutex(&scp->mx);
2772 /* make sure we end things properly */
2774 cm_EndCallbackGrantingCall(NULL, &cbReq, NULL, 0);
2776 if (scp && cm_CheckDirOpForSingleChange(&dirop)) {
2777 cm_DirCreateEntry(&dirop, namep, &newFid);
2779 cm_BPlusDirCreateEntry(&dirop, namep, &newFid);
2782 cm_EndDirOp(&dirop);
2787 long cm_FSync(cm_scache_t *scp, cm_user_t *userp, cm_req_t *reqp)
2791 lock_ObtainWrite(&scp->bufCreateLock);
2792 code = buf_CleanVnode(scp, userp, reqp);
2793 lock_ReleaseWrite(&scp->bufCreateLock);
2795 lock_ObtainMutex(&scp->mx);
2797 if (scp->mask & (CM_SCACHEMASK_TRUNCPOS
2798 | CM_SCACHEMASK_CLIENTMODTIME
2799 | CM_SCACHEMASK_LENGTH))
2800 code = cm_StoreMini(scp, userp, reqp);
2802 if (scp->flags & (CM_SCACHEFLAG_OVERQUOTA | CM_SCACHEFLAG_OUTOFSPACE)) {
2803 code = (scp->flags & CM_SCACHEFLAG_OVERQUOTA) ? CM_ERROR_QUOTA : CM_ERROR_SPACE;
2804 scp->flags &= ~(CM_SCACHEFLAG_OVERQUOTA | CM_SCACHEFLAG_OUTOFSPACE);
2807 lock_ReleaseMutex(&scp->mx);
2812 long cm_MakeDir(cm_scache_t *dscp, char *namep, long flags, cm_attr_t *attrp,
2813 cm_user_t *userp, cm_req_t *reqp)
2818 cm_callbackRequest_t cbReq;
2821 cm_scache_t *scp = NULL;
2823 AFSStoreStatus inStatus;
2824 AFSFetchStatus updatedDirStatus;
2825 AFSFetchStatus newDirStatus;
2826 AFSCallBack newDirCallback;
2828 struct rx_connection * callp;
2831 /* can't create names with @sys in them; must expand it manually first.
2832 * return "invalid request" if they try.
2834 if (cm_ExpandSysName(namep, NULL, 0, 0)) {
2835 return CM_ERROR_ATSYS;
2838 /* before starting the RPC, mark that we're changing the directory
2839 * data, so that someone who does a chmod on the dir will wait until
2840 * our call completes.
2842 cm_BeginDirOp(dscp, userp, reqp, CM_DIRLOCK_NONE, &dirop);
2843 lock_ObtainMutex(&dscp->mx);
2844 code = cm_SyncOp(dscp, NULL, userp, reqp, 0, CM_SCACHESYNC_STOREDATA);
2845 lock_ReleaseMutex(&dscp->mx);
2847 cm_StartCallbackGrantingCall(NULL, &cbReq);
2849 cm_EndDirOp(&dirop);
2856 cm_StatusFromAttr(&inStatus, NULL, attrp);
2858 /* try the RPC now */
2859 osi_Log1(afsd_logp, "CALL MakeDir scp 0x%p", dscp);
2861 code = cm_ConnFromFID(&dscp->fid, userp, reqp, &connp);
2865 dirAFSFid.Volume = dscp->fid.volume;
2866 dirAFSFid.Vnode = dscp->fid.vnode;
2867 dirAFSFid.Unique = dscp->fid.unique;
2869 callp = cm_GetRxConn(connp);
2870 code = RXAFS_MakeDir(connp->callp, &dirAFSFid, namep,
2871 &inStatus, &newAFSFid, &newDirStatus,
2872 &updatedDirStatus, &newDirCallback,
2874 rx_PutConnection(callp);
2876 } while (cm_Analyze(connp, userp, reqp,
2877 &dscp->fid, &volSync, NULL, &cbReq, code));
2878 code = cm_MapRPCError(code, reqp);
2881 osi_Log1(afsd_logp, "CALL MakeDir FAILURE, code 0x%x", code);
2883 osi_Log0(afsd_logp, "CALL MakeDir SUCCESS");
2886 lock_ObtainWrite(&dirop.scp->dirlock);
2887 dirop.lockType = CM_DIRLOCK_WRITE;
2889 lock_ObtainMutex(&dscp->mx);
2890 cm_SyncOpDone(dscp, NULL, CM_SCACHESYNC_STOREDATA);
2892 cm_MergeStatus(NULL, dscp, &updatedDirStatus, &volSync, userp, CM_MERGEFLAG_DIROP);
2894 lock_ReleaseMutex(&dscp->mx);
2896 /* now try to create the new dir's entry, too, but be careful to
2897 * make sure that we don't merge in old info. Since we weren't locking
2898 * out any requests during the file's creation, we may have pretty old
2902 newFid.cell = dscp->fid.cell;
2903 newFid.volume = dscp->fid.volume;
2904 newFid.vnode = newAFSFid.Vnode;
2905 newFid.unique = newAFSFid.Unique;
2906 code = cm_GetSCache(&newFid, &scp, userp, reqp);
2908 lock_ObtainMutex(&scp->mx);
2909 if (!cm_HaveCallback(scp)) {
2910 cm_MergeStatus(dscp, scp, &newDirStatus, &volSync,
2912 cm_EndCallbackGrantingCall(scp, &cbReq,
2913 &newDirCallback, 0);
2916 lock_ReleaseMutex(&scp->mx);
2917 cm_ReleaseSCache(scp);
2921 /* make sure we end things properly */
2923 cm_EndCallbackGrantingCall(NULL, &cbReq, NULL, 0);
2925 if (scp && cm_CheckDirOpForSingleChange(&dirop)) {
2926 cm_DirCreateEntry(&dirop, namep, &newFid);
2928 cm_BPlusDirCreateEntry(&dirop, namep, &newFid);
2931 cm_EndDirOp(&dirop);
2933 /* and return error code */
2937 long cm_Link(cm_scache_t *dscp, char *namep, cm_scache_t *sscp, long flags,
2938 cm_user_t *userp, cm_req_t *reqp)
2943 AFSFid existingAFSFid;
2944 AFSFetchStatus updatedDirStatus;
2945 AFSFetchStatus newLinkStatus;
2947 struct rx_connection * callp;
2950 if (dscp->fid.cell != sscp->fid.cell ||
2951 dscp->fid.volume != sscp->fid.volume) {
2952 return CM_ERROR_CROSSDEVLINK;
2955 cm_BeginDirOp(dscp, userp, reqp, CM_DIRLOCK_NONE, &dirop);
2956 lock_ObtainMutex(&dscp->mx);
2957 code = cm_SyncOp(dscp, NULL, userp, reqp, 0, CM_SCACHESYNC_STOREDATA);
2958 lock_ReleaseMutex(&dscp->mx);
2960 cm_EndDirOp(&dirop);
2965 /* try the RPC now */
2966 osi_Log1(afsd_logp, "CALL Link scp 0x%p", dscp);
2968 code = cm_ConnFromFID(&dscp->fid, userp, reqp, &connp);
2971 dirAFSFid.Volume = dscp->fid.volume;
2972 dirAFSFid.Vnode = dscp->fid.vnode;
2973 dirAFSFid.Unique = dscp->fid.unique;
2975 existingAFSFid.Volume = sscp->fid.volume;
2976 existingAFSFid.Vnode = sscp->fid.vnode;
2977 existingAFSFid.Unique = sscp->fid.unique;
2979 callp = cm_GetRxConn(connp);
2980 code = RXAFS_Link(callp, &dirAFSFid, namep, &existingAFSFid,
2981 &newLinkStatus, &updatedDirStatus, &volSync);
2982 rx_PutConnection(callp);
2983 osi_Log1(smb_logp," RXAFS_Link returns 0x%x", code);
2985 } while (cm_Analyze(connp, userp, reqp,
2986 &dscp->fid, &volSync, NULL, NULL, code));
2988 code = cm_MapRPCError(code, reqp);
2991 osi_Log1(afsd_logp, "CALL Link FAILURE, code 0x%x", code);
2993 osi_Log0(afsd_logp, "CALL Link SUCCESS");
2996 lock_ObtainWrite(&dirop.scp->dirlock);
2997 dirop.lockType = CM_DIRLOCK_WRITE;
2999 lock_ObtainMutex(&dscp->mx);
3000 cm_SyncOpDone(dscp, NULL, CM_SCACHESYNC_STOREDATA);
3002 cm_MergeStatus(NULL, dscp, &updatedDirStatus, &volSync, userp, CM_MERGEFLAG_DIROP);
3004 lock_ReleaseMutex(&dscp->mx);
3007 if (cm_CheckDirOpForSingleChange(&dirop)) {
3008 cm_DirCreateEntry(&dirop, namep, &sscp->fid);
3010 cm_BPlusDirCreateEntry(&dirop, namep, &sscp->fid);
3014 cm_EndDirOp(&dirop);
3019 long cm_SymLink(cm_scache_t *dscp, char *namep, char *contentsp, long flags,
3020 cm_attr_t *attrp, cm_user_t *userp, cm_req_t *reqp)
3028 AFSStoreStatus inStatus;
3029 AFSFetchStatus updatedDirStatus;
3030 AFSFetchStatus newLinkStatus;
3032 struct rx_connection * callp;
3035 /* before starting the RPC, mark that we're changing the directory data,
3036 * so that someone who does a chmod on the dir will wait until our
3039 cm_BeginDirOp(dscp, userp, reqp, CM_DIRLOCK_NONE, &dirop);
3040 lock_ObtainMutex(&dscp->mx);
3041 code = cm_SyncOp(dscp, NULL, userp, reqp, 0, CM_SCACHESYNC_STOREDATA);
3042 lock_ReleaseMutex(&dscp->mx);
3044 cm_EndDirOp(&dirop);
3049 cm_StatusFromAttr(&inStatus, NULL, attrp);
3051 /* try the RPC now */
3052 osi_Log1(afsd_logp, "CALL Symlink scp 0x%p", dscp);
3054 code = cm_ConnFromFID(&dscp->fid, userp, reqp, &connp);
3058 dirAFSFid.Volume = dscp->fid.volume;
3059 dirAFSFid.Vnode = dscp->fid.vnode;
3060 dirAFSFid.Unique = dscp->fid.unique;
3062 callp = cm_GetRxConn(connp);
3063 code = RXAFS_Symlink(callp, &dirAFSFid, namep, contentsp,
3064 &inStatus, &newAFSFid, &newLinkStatus,
3065 &updatedDirStatus, &volSync);
3066 rx_PutConnection(callp);
3068 } while (cm_Analyze(connp, userp, reqp,
3069 &dscp->fid, &volSync, NULL, NULL, code));
3070 code = cm_MapRPCError(code, reqp);
3073 osi_Log1(afsd_logp, "CALL Symlink FAILURE, code 0x%x", code);
3075 osi_Log0(afsd_logp, "CALL Symlink SUCCESS");
3078 lock_ObtainWrite(&dirop.scp->dirlock);
3079 dirop.lockType = CM_DIRLOCK_WRITE;
3081 lock_ObtainMutex(&dscp->mx);
3082 cm_SyncOpDone(dscp, NULL, CM_SCACHESYNC_STOREDATA);
3084 cm_MergeStatus(NULL, dscp, &updatedDirStatus, &volSync, userp, CM_MERGEFLAG_DIROP);
3086 lock_ReleaseMutex(&dscp->mx);
3089 if (cm_CheckDirOpForSingleChange(&dirop)) {
3090 newFid.cell = dscp->fid.cell;
3091 newFid.volume = dscp->fid.volume;
3092 newFid.vnode = newAFSFid.Vnode;
3093 newFid.unique = newAFSFid.Unique;
3095 cm_DirCreateEntry(&dirop, namep, &newFid);
3097 cm_BPlusDirCreateEntry(&dirop, namep, &newFid);
3101 cm_EndDirOp(&dirop);
3103 /* now try to create the new dir's entry, too, but be careful to
3104 * make sure that we don't merge in old info. Since we weren't locking
3105 * out any requests during the file's creation, we may have pretty old
3109 newFid.cell = dscp->fid.cell;
3110 newFid.volume = dscp->fid.volume;
3111 newFid.vnode = newAFSFid.Vnode;
3112 newFid.unique = newAFSFid.Unique;
3113 code = cm_GetSCache(&newFid, &scp, userp, reqp);
3115 lock_ObtainMutex(&scp->mx);
3116 if (!cm_HaveCallback(scp)) {
3117 cm_MergeStatus(dscp, scp, &newLinkStatus, &volSync,
3120 lock_ReleaseMutex(&scp->mx);
3121 cm_ReleaseSCache(scp);
3125 /* and return error code */
3129 long cm_RemoveDir(cm_scache_t *dscp, char *namep, cm_user_t *userp,
3136 AFSFetchStatus updatedDirStatus;
3138 struct rx_connection * callp;
3141 /* before starting the RPC, mark that we're changing the directory data,
3142 * so that someone who does a chmod on the dir will wait until our
3145 cm_BeginDirOp(dscp, userp, reqp, CM_DIRLOCK_NONE, &dirop);
3146 lock_ObtainMutex(&dscp->mx);
3147 code = cm_SyncOp(dscp, NULL, userp, reqp, 0, CM_SCACHESYNC_STOREDATA);
3148 lock_ReleaseMutex(&dscp->mx);
3150 cm_EndDirOp(&dirop);
3155 /* try the RPC now */
3156 osi_Log1(afsd_logp, "CALL RemoveDir scp 0x%p", dscp);
3158 code = cm_ConnFromFID(&dscp->fid, userp, reqp, &connp);
3162 dirAFSFid.Volume = dscp->fid.volume;
3163 dirAFSFid.Vnode = dscp->fid.vnode;
3164 dirAFSFid.Unique = dscp->fid.unique;
3166 callp = cm_GetRxConn(connp);
3167 code = RXAFS_RemoveDir(callp, &dirAFSFid, namep,
3168 &updatedDirStatus, &volSync);
3169 rx_PutConnection(callp);
3171 } while (cm_Analyze(connp, userp, reqp,
3172 &dscp->fid, &volSync, NULL, NULL, code));
3173 code = cm_MapRPCErrorRmdir(code, reqp);
3176 osi_Log1(afsd_logp, "CALL RemoveDir FAILURE, code 0x%x", code);
3178 osi_Log0(afsd_logp, "CALL RemoveDir SUCCESS");
3181 lock_ObtainWrite(&dirop.scp->dirlock);
3182 dirop.lockType = CM_DIRLOCK_WRITE;
3184 lock_ObtainMutex(&dscp->mx);
3185 cm_SyncOpDone(dscp, NULL, CM_SCACHESYNC_STOREDATA);
3187 cm_dnlcRemove(dscp, namep);
3188 cm_MergeStatus(NULL, dscp, &updatedDirStatus, &volSync, userp, CM_MERGEFLAG_DIROP);
3190 lock_ReleaseMutex(&dscp->mx);
3193 if (cm_CheckDirOpForSingleChange(&dirop)) {
3194 cm_DirDeleteEntry(&dirop, namep);
3196 cm_BPlusDirDeleteEntry(&dirop, namep);
3200 cm_EndDirOp(&dirop);
3202 /* and return error code */
3206 long cm_Open(cm_scache_t *scp, int type, cm_user_t *userp)
3208 /* grab mutex on contents */
3209 lock_ObtainMutex(&scp->mx);
3211 /* reset the prefetch info */
3212 scp->prefetch.base.LowPart = 0; /* base */
3213 scp->prefetch.base.HighPart = 0;
3214 scp->prefetch.end.LowPart = 0; /* and end */
3215 scp->prefetch.end.HighPart = 0;
3217 /* release mutex on contents */
3218 lock_ReleaseMutex(&scp->mx);
3224 long cm_Rename(cm_scache_t *oldDscp, char *oldNamep, cm_scache_t *newDscp,
3225 char *newNamep, cm_user_t *userp, cm_req_t *reqp)
3229 AFSFid oldDirAFSFid;
3230 AFSFid newDirAFSFid;
3232 AFSFetchStatus updatedOldDirStatus;
3233 AFSFetchStatus updatedNewDirStatus;
3236 struct rx_connection * callp;
3237 cm_dirOp_t oldDirOp;
3240 cm_dirOp_t newDirOp;
3242 /* before starting the RPC, mark that we're changing the directory data,
3243 * so that someone who does a chmod on the dir will wait until our call
3244 * completes. We do this in vnode order so that we don't deadlock,
3245 * which makes the code a little verbose.
3247 if (oldDscp == newDscp) {
3248 /* check for identical names */
3249 if (strcmp(oldNamep, newNamep) == 0)
3250 return CM_ERROR_RENAME_IDENTICAL;
3253 cm_BeginDirOp(oldDscp, userp, reqp, CM_DIRLOCK_NONE, &oldDirOp);
3254 lock_ObtainMutex(&oldDscp->mx);
3255 cm_dnlcRemove(oldDscp, oldNamep);
3256 cm_dnlcRemove(oldDscp, newNamep);
3257 code = cm_SyncOp(oldDscp, NULL, userp, reqp, 0,
3258 CM_SCACHESYNC_STOREDATA);
3259 lock_ReleaseMutex(&oldDscp->mx);
3261 cm_EndDirOp(&oldDirOp);
3265 /* two distinct dir vnodes */
3267 if (oldDscp->fid.cell != newDscp->fid.cell ||
3268 oldDscp->fid.volume != newDscp->fid.volume)
3269 return CM_ERROR_CROSSDEVLINK;
3271 /* shouldn't happen that we have distinct vnodes for two
3272 * different files, but could due to deliberate attack, or
3273 * stale info. Avoid deadlocks and quit now.
3275 if (oldDscp->fid.vnode == newDscp->fid.vnode)
3276 return CM_ERROR_CROSSDEVLINK;
3278 if (oldDscp->fid.vnode < newDscp->fid.vnode) {
3279 cm_BeginDirOp(oldDscp, userp, reqp, CM_DIRLOCK_NONE, &oldDirOp);
3280 lock_ObtainMutex(&oldDscp->mx);
3281 cm_dnlcRemove(oldDscp, oldNamep);
3282 code = cm_SyncOp(oldDscp, NULL, userp, reqp, 0,
3283 CM_SCACHESYNC_STOREDATA);
3284 lock_ReleaseMutex(&oldDscp->mx);
3286 cm_EndDirOp(&oldDirOp);
3288 cm_BeginDirOp(newDscp, userp, reqp, CM_DIRLOCK_NONE, &newDirOp);
3289 lock_ObtainMutex(&newDscp->mx);
3290 cm_dnlcRemove(newDscp, newNamep);
3291 code = cm_SyncOp(newDscp, NULL, userp, reqp, 0,
3292 CM_SCACHESYNC_STOREDATA);
3293 lock_ReleaseMutex(&newDscp->mx);
3295 cm_EndDirOp(&newDirOp);
3297 /* cleanup first one */
3298 lock_ObtainMutex(&oldDscp->mx);
3299 cm_SyncOpDone(oldDscp, NULL,
3300 CM_SCACHESYNC_STOREDATA);
3301 lock_ReleaseMutex(&oldDscp->mx);
3302 cm_EndDirOp(&oldDirOp);
3307 /* lock the new vnode entry first */
3308 cm_BeginDirOp(newDscp, userp, reqp, CM_DIRLOCK_NONE, &newDirOp);
3309 lock_ObtainMutex(&newDscp->mx);
3310 cm_dnlcRemove(newDscp, newNamep);
3311 code = cm_SyncOp(newDscp, NULL, userp, reqp, 0,
3312 CM_SCACHESYNC_STOREDATA);
3313 lock_ReleaseMutex(&newDscp->mx);
3315 cm_EndDirOp(&newDirOp);
3317 cm_BeginDirOp(oldDscp, userp, reqp, CM_DIRLOCK_NONE, &oldDirOp);
3318 lock_ObtainMutex(&oldDscp->mx);
3319 cm_dnlcRemove(oldDscp, oldNamep);
3320 code = cm_SyncOp(oldDscp, NULL, userp, reqp, 0,
3321 CM_SCACHESYNC_STOREDATA);
3322 lock_ReleaseMutex(&oldDscp->mx);
3324 cm_EndDirOp(&oldDirOp);
3326 /* cleanup first one */
3327 lock_ObtainMutex(&newDscp->mx);
3328 cm_SyncOpDone(newDscp, NULL,
3329 CM_SCACHESYNC_STOREDATA);
3330 lock_ReleaseMutex(&newDscp->mx);
3331 cm_EndDirOp(&newDirOp);
3335 } /* two distinct vnodes */
3342 /* try the RPC now */
3343 osi_Log2(afsd_logp, "CALL Rename old scp 0x%p new scp 0x%p",
3346 code = cm_ConnFromFID(&oldDscp->fid, userp, reqp, &connp);
3350 oldDirAFSFid.Volume = oldDscp->fid.volume;
3351 oldDirAFSFid.Vnode = oldDscp->fid.vnode;
3352 oldDirAFSFid.Unique = oldDscp->fid.unique;
3353 newDirAFSFid.Volume = newDscp->fid.volume;
3354 newDirAFSFid.Vnode = newDscp->fid.vnode;
3355 newDirAFSFid.Unique = newDscp->fid.unique;
3357 callp = cm_GetRxConn(connp);
3358 code = RXAFS_Rename(callp, &oldDirAFSFid, oldNamep,
3359 &newDirAFSFid, newNamep,
3360 &updatedOldDirStatus, &updatedNewDirStatus,
3362 rx_PutConnection(callp);
3364 } while (cm_Analyze(connp, userp, reqp, &oldDscp->fid,
3365 &volSync, NULL, NULL, code));
3366 code = cm_MapRPCError(code, reqp);
3369 osi_Log1(afsd_logp, "CALL Rename FAILURE, code 0x%x", code);
3371 osi_Log0(afsd_logp, "CALL Rename SUCCESS");
3373 /* update the individual stat cache entries for the directories */
3375 lock_ObtainWrite(&oldDirOp.scp->dirlock);
3376 oldDirOp.lockType = CM_DIRLOCK_WRITE;
3378 lock_ObtainMutex(&oldDscp->mx);
3379 cm_SyncOpDone(oldDscp, NULL, CM_SCACHESYNC_STOREDATA);
3382 cm_MergeStatus(NULL, oldDscp, &updatedOldDirStatus, &volSync,
3383 userp, CM_MERGEFLAG_DIROP);
3384 lock_ReleaseMutex(&oldDscp->mx);
3387 if (cm_CheckDirOpForSingleChange(&oldDirOp)) {
3390 diropCode = cm_BPlusDirLookup(&oldDirOp, oldNamep, &fileFid);
3391 if (diropCode == CM_ERROR_INEXACT_MATCH)
3393 else if (diropCode == EINVAL)
3395 diropCode = cm_DirLookup(&oldDirOp, oldNamep, &fileFid);
3397 if (diropCode == 0) {
3399 diropCode = cm_DirCreateEntry(&oldDirOp, newNamep, &fileFid);
3401 cm_BPlusDirCreateEntry(&oldDirOp, newNamep, &fileFid);
3405 if (diropCode == 0) {
3406 diropCode = cm_DirDeleteEntry(&oldDirOp, oldNamep);
3408 cm_BPlusDirDeleteEntry(&oldDirOp, oldNamep);
3414 cm_EndDirOp(&oldDirOp);
3416 /* and update it for the new one, too, if necessary */
3419 lock_ObtainWrite(&newDirOp.scp->dirlock);
3420 newDirOp.lockType = CM_DIRLOCK_WRITE;
3422 lock_ObtainMutex(&newDscp->mx);
3423 cm_SyncOpDone(newDscp, NULL, CM_SCACHESYNC_STOREDATA);
3425 cm_MergeStatus(NULL, newDscp, &updatedNewDirStatus, &volSync,
3426 userp, CM_MERGEFLAG_DIROP);
3427 lock_ReleaseMutex(&newDscp->mx);
3430 /* we only make the local change if we successfully made
3431 the change in the old directory AND there was only one
3432 change in the new directory */
3433 if (diropCode == 0 && cm_CheckDirOpForSingleChange(&newDirOp)) {
3434 cm_DirCreateEntry(&newDirOp, newNamep, &fileFid);
3436 cm_BPlusDirCreateEntry(&newDirOp, newNamep, &fileFid);
3440 cm_EndDirOp(&newDirOp);
3443 /* and return error code */
3447 /* Byte range locks:
3449 The OpenAFS Windows client has to fake byte range locks given no
3450 server side support for such locks. This is implemented as keyed
3451 byte range locks on the cache manager.