src/WINNT/afsd/cm_freelance.c

   1 #include <afs/param.h>
   2 #include <afs/stds.h>
   3
   4 #include <windows.h>
   5 #include <winreg.h>
   6 #include <winsock2.h>
   7 #include <stdlib.h>
   8 #include <malloc.h>
   9 #include <string.h>
  10
  11 #include <WINNT/afsreg.h>
  12 #include "afsd.h"
  13 #include <rx/rx.h>
  14
  15 #ifdef AFS_FREELANCE_CLIENT
  16 #include "cm_freelance.h"
  17 #include "stdio.h"
  18
  19 extern void afsi_log(char *pattern, ...);
  20
  21 int cm_noLocalMountPoints;
  22 int cm_fakeDirSize;
  23 int cm_fakeDirCallback=0;
  24 int cm_fakeGettingCallback=0;
  25 cm_localMountPoint_t* cm_localMountPoints;
  26 osi_mutex_t cm_Freelance_Lock;
  27 int cm_localMountPointChangeFlag = 0;
  28 int cm_freelanceEnabled = 1;
  29 time_t FakeFreelanceModTime = 0x3b49f6e2;
  30
  31 static int freelance_ShutdownFlag = 0;
  32 static HANDLE hFreelanceChangeEvent = 0;
  33 static HANDLE hFreelanceSymlinkChangeEvent = 0;
  34
  35 void cm_InitFakeRootDir();
  36
  37 void cm_FreelanceChangeNotifier(void * parmp) {
  38     HKEY   hkFreelance = 0;
  39
  40     if (RegOpenKeyEx( HKEY_LOCAL_MACHINE,
  41                       AFSREG_CLT_OPENAFS_SUBKEY "\\Freelance",
  42                       0,
  43                       KEY_NOTIFY,
  44                       &hkFreelance) == ERROR_SUCCESS) {
  45
  46         hFreelanceChangeEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
  47         if (hFreelanceChangeEvent == NULL) {
  48             RegCloseKey(hkFreelance);
  49             return;
  50         }
  51     }
  52
  53     while ( TRUE ) {
  54     /* check hFreelanceChangeEvent to see if it is set.
  55      * if so, call cm_noteLocalMountPointChange()
  56      */
  57         if (RegNotifyChangeKeyValue( hkFreelance,   /* hKey */
  58                                      FALSE,         /* bWatchSubtree */
  59                                      REG_NOTIFY_CHANGE_LAST_SET, /* dwNotifyFilter */
  60                                      hFreelanceChangeEvent, /* hEvent */
  61                                      TRUE          /* fAsynchronous */
  62                                      ) != ERROR_SUCCESS) {
  63             RegCloseKey(hkFreelance);
  64             CloseHandle(hFreelanceChangeEvent);
  65             hFreelanceChangeEvent = 0;
  66             return;
  67         }
  68
  69         if (WaitForSingleObject(hFreelanceChangeEvent, INFINITE) == WAIT_OBJECT_0)
  70         {
  71             if (freelance_ShutdownFlag == 1) {
  72                 RegCloseKey(hkFreelance);
  73                 CloseHandle(hFreelanceChangeEvent);
  74                 hFreelanceChangeEvent = 0;
  75                 return;
  76             }
  77             cm_noteLocalMountPointChange();
  78         }
  79     }
  80 }
  81
  82 void cm_FreelanceSymlinkChangeNotifier(void * parmp) {
  83     HKEY   hkFreelance = 0;
  84
  85     if (RegOpenKeyEx( HKEY_LOCAL_MACHINE,
  86                       AFSREG_CLT_OPENAFS_SUBKEY "\\Freelance\\Symlinks",
  87                       0,
  88                       KEY_NOTIFY,
  89                       &hkFreelance) == ERROR_SUCCESS) {
  90
  91         hFreelanceSymlinkChangeEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
  92         if (hFreelanceSymlinkChangeEvent == NULL) {
  93             RegCloseKey(hkFreelance);
  94             return;
  95         }
  96     }
  97
  98     while ( TRUE ) {
  99     /* check hFreelanceSymlinkChangeEvent to see if it is set.
 100      * if so, call cm_noteLocalMountPointSymlinkChange()
 101      */
 102         if (RegNotifyChangeKeyValue( hkFreelance,   /* hKey */
 103                                      FALSE,         /* bWatchSubtree */
 104                                      REG_NOTIFY_CHANGE_LAST_SET, /* dwNotifyFilter */
 105                                      hFreelanceSymlinkChangeEvent, /* hEvent */
 106                                      TRUE          /* fAsynchronous */
 107                                      ) != ERROR_SUCCESS) {
 108             RegCloseKey(hkFreelance);
 109             CloseHandle(hFreelanceSymlinkChangeEvent);
 110             hFreelanceSymlinkChangeEvent = 0;
 111             return;
 112         }
 113
 114         if (WaitForSingleObject(hFreelanceSymlinkChangeEvent, INFINITE) == WAIT_OBJECT_0)
 115         {
 116             if (freelance_ShutdownFlag == 1) {
 117                 RegCloseKey(hkFreelance);
 118                 CloseHandle(hFreelanceSymlinkChangeEvent);
 119                 hFreelanceSymlinkChangeEvent = 0;
 120                 return;
 121             }
 122             cm_noteLocalMountPointChange();
 123         }
 124     }
 125 }
 126
 127 void
 128 cm_FreelanceShutdown(void)
 129 {
 130     freelance_ShutdownFlag = 1;
 131     if (hFreelanceChangeEvent != 0)
 132         thrd_SetEvent(hFreelanceChangeEvent);
 133     if (hFreelanceSymlinkChangeEvent != 0)
 134         thrd_SetEvent(hFreelanceSymlinkChangeEvent);
 135 }
 136
 137 void cm_InitFreelance() {
 138     thread_t phandle;
 139     int lpid;
 140
 141     lock_InitializeMutex(&cm_Freelance_Lock, "Freelance Lock");
 142
 143     // make sure we sync the data version to the cached root scache_t
 144     if (cm_data.rootSCachep && cm_data.rootSCachep->fid.cell == AFS_FAKE_ROOT_CELL_ID)
 145         cm_data.fakeDirVersion = cm_data.rootSCachep->dataVersion;
 146
 147     // yj: first we make a call to cm_initLocalMountPoints
 148     // to read all the local mount points from the registry
 149     cm_InitLocalMountPoints();
 150
 151     // then we make a call to InitFakeRootDir to create
 152     // a fake root directory based on the local mount points
 153     cm_InitFakeRootDir();
 154     // --- end of yj code
 155
 156     /* Start the registry monitor */
 157     phandle = thrd_Create(NULL, 65536, (ThreadFunc) cm_FreelanceChangeNotifier,
 158                           NULL, 0, &lpid, "cm_FreelanceChangeNotifier");
 159     osi_assertx(phandle != NULL, "cm_FreelanceChangeNotifier thread create failure");
 160     thrd_CloseHandle(phandle);
 161
 162     phandle = thrd_Create(NULL, 65536, (ThreadFunc) cm_FreelanceSymlinkChangeNotifier,
 163                           NULL, 0, &lpid, "cm_FreelanceSymlinkChangeNotifier");
 164     osi_assertx(phandle != NULL, "cm_FreelanceSymlinkChangeNotifier thread create failure");
 165     thrd_CloseHandle(phandle);
 166 }
 167
 168 /* yj: Initialization of the fake root directory */
 169 /* to be called while holding freelance lock unless during init. */
 170 void cm_InitFakeRootDir() {
 171     int i, t1, t2;
 172     char* currentPos;
 173     int noChunks;
 174
 175     // allocate space for the fake info
 176     cm_dirHeader_t fakeDirHeader;
 177     cm_dirEntry_t fakeEntry;
 178     cm_pageHeader_t fakePageHeader;
 179
 180     // i'm going to calculate how much space is needed for
 181     // this fake root directory. we have these rules:
 182     // 1. there are cm_noLocalMountPoints number of entries
 183     // 2. each page is CM_DIR_PAGESIZE in size
 184     // 3. the first 13 chunks of the first page are used for
 185     //    some header stuff
 186     // 4. the first chunk of all subsequent pages are used
 187     //    for page header stuff
 188     // 5. a max of CM_DIR_EPP entries are allowed per page
 189     // 6. each entry takes 1 or more chunks, depending on
 190     //    the size of the mount point string, as determined
 191     //    by cm_NameEntries
 192     // 7. each chunk is CM_DIR_CHUNKSIZE bytes
 193
 194     int CPP = CM_DIR_PAGESIZE / CM_DIR_CHUNKSIZE;
 195     int curChunk = 13;  // chunks 0 - 12 are used for header stuff
 196                         // of the first page in the directory
 197     int curPage = 0;
 198     int curDirEntry = 0;
 199     int curDirEntryInPage = 0;
 200     int sizeOfCurEntry;
 201     int dirSize;
 202
 203     /* Reserve 2 directory chunks for "." and ".." */
 204     curChunk += 2;
 205
 206     while (curDirEntry<cm_noLocalMountPoints) {
 207         sizeOfCurEntry = cm_NameEntries((cm_localMountPoints+curDirEntry)->namep, 0);
 208         if ((curChunk + sizeOfCurEntry >= CPP) ||
 209              (curDirEntryInPage + 1 >= CM_DIR_EPP)) {
 210             curPage++;
 211             curDirEntryInPage = 0;
 212             curChunk = 1;
 213         }
 214         curChunk += sizeOfCurEntry;
 215         curDirEntry++;
 216         curDirEntryInPage++;
 217     }
 218
 219     dirSize = (curPage+1) *  CM_DIR_PAGESIZE;
 220     cm_FakeRootDir = malloc(dirSize);
 221     cm_fakeDirSize = dirSize;
 222
 223     // yj: when we get here, we've figured out how much memory we need and
 224     // allocated the appropriate space for it. we now prceed to fill
 225     // it up with entries.
 226     curPage = 0;
 227     curDirEntry = 0;
 228     curDirEntryInPage = 0;
 229     curChunk = 0;
 230
 231     // fields in the directory entry that are unused.
 232     fakeEntry.flag = 1;
 233     fakeEntry.length = 0;
 234     fakeEntry.next = 0;
 235     fakeEntry.fid.unique = htonl(1);
 236
 237     // the first page is special, it uses fakeDirHeader instead of fakePageHeader
 238     // we fill up the page with dirEntries that belong there and we make changes
 239     // to the fakeDirHeader.header.freeBitmap along the way. Then when we're done
 240     // filling up the dirEntries in this page, we copy the fakeDirHeader into
 241     // the top of the page.
 242
 243     // init the freeBitmap array
 244     for (i=0; i<8; i++)
 245         fakeDirHeader.header.freeBitmap[i]=0;
 246
 247     fakeDirHeader.header.freeBitmap[0] = 0xff;
 248     fakeDirHeader.header.freeBitmap[1] = 0x7f;
 249
 250
 251     // we start counting at 13 because the 0th to 12th chunks are used for header
 252     curChunk = 13;
 253
 254     // stick the first 2 entries "." and ".." in
 255     fakeEntry.fid.unique = htonl(1);
 256     fakeEntry.fid.vnode = htonl(1);
 257     strcpy(fakeEntry.name, ".");
 258     currentPos = cm_FakeRootDir + curPage * CM_DIR_PAGESIZE + curChunk * CM_DIR_CHUNKSIZE;
 259     memcpy(currentPos, &fakeEntry, CM_DIR_CHUNKSIZE);
 260     curChunk++; curDirEntryInPage++;
 261     strcpy(fakeEntry.name, "..");
 262     currentPos = cm_FakeRootDir + curPage * CM_DIR_PAGESIZE + curChunk * CM_DIR_CHUNKSIZE;
 263     memcpy(currentPos, &fakeEntry, CM_DIR_CHUNKSIZE);
 264     curChunk++; curDirEntryInPage++;
 265
 266     // keep putting stuff into page 0 if
 267     // 1. we're not done with all entries
 268     // 2. we have less than CM_DIR_EPP entries in page 0
 269     // 3. we're not out of chunks in page 0
 270
 271     while( (curDirEntry<cm_noLocalMountPoints) &&
 272            (curDirEntryInPage < CM_DIR_EPP) &&
 273            (curChunk + cm_NameEntries((cm_localMountPoints+curDirEntry)->namep, 0) <= CPP))
 274     {
 275
 276         noChunks = cm_NameEntries((cm_localMountPoints+curDirEntry)->namep, 0);
 277         fakeEntry.fid.vnode = htonl(curDirEntry + 2);
 278         currentPos = cm_FakeRootDir + curPage * CM_DIR_PAGESIZE + curChunk * CM_DIR_CHUNKSIZE;
 279
 280         memcpy(currentPos, &fakeEntry, CM_DIR_CHUNKSIZE);
 281         strcpy(currentPos + 12, (cm_localMountPoints+curDirEntry)->namep);
 282         curDirEntry++;
 283         curDirEntryInPage++;
 284         for (i=0; i<noChunks; i++) {
 285             t1 = (curChunk + i) / 8;
 286             t2 = curChunk + i - (t1*8);
 287             fakeDirHeader.header.freeBitmap[t1] |= (1 << t2);
 288         }
 289         curChunk+=noChunks;
 290     }
 291
 292     // when we get here, we're done with filling in the entries for page 0
 293     // copy in the header info
 294
 295     memcpy(cm_FakeRootDir, &fakeDirHeader, 13 * CM_DIR_CHUNKSIZE);
 296
 297     curPage++;
 298
 299     // ok, page 0's done. Move on to the next page.
 300     while (curDirEntry<cm_noLocalMountPoints) {
 301         // setup a new page
 302         curChunk = 1;                   // the zeroth chunk is reserved for page header
 303         curDirEntryInPage = 0;
 304         for (i=0; i<8; i++) {
 305             fakePageHeader.freeBitmap[i]=0;
 306         }
 307         fakePageHeader.freeCount = 0;
 308         fakePageHeader.pgcount = 0;
 309         fakePageHeader.tag = htons(1234);
 310
 311         // while we're on the same page...
 312         while ( (curDirEntry<cm_noLocalMountPoints) &&
 313                 (curDirEntryInPage < CM_DIR_EPP) &&
 314                 (curChunk + cm_NameEntries((cm_localMountPoints+curDirEntry)->namep, 0) <= CPP))
 315         {
 316             // add an entry to this page
 317
 318             noChunks = cm_NameEntries((cm_localMountPoints+curDirEntry)->namep, 0);
 319             fakeEntry.fid.vnode=htonl(curDirEntry+2);
 320             currentPos = cm_FakeRootDir + curPage * CM_DIR_PAGESIZE + curChunk * CM_DIR_CHUNKSIZE;
 321             memcpy(currentPos, &fakeEntry, CM_DIR_CHUNKSIZE);
 322             strcpy(currentPos + 12, (cm_localMountPoints+curDirEntry)->namep);
 323             curDirEntry++;
 324             curDirEntryInPage++;
 325             for (i=0; i<noChunks; i++) {
 326                 t1 = (curChunk + i) / 8;
 327                 t2 = curChunk + i - (t1*8);
 328                 fakePageHeader.freeBitmap[t1] |= (1 << t2);
 329             }
 330             curChunk+=noChunks;
 331         }
 332         memcpy(cm_FakeRootDir + curPage * CM_DIR_PAGESIZE, &fakePageHeader, sizeof(fakePageHeader));
 333
 334         curPage++;
 335     }
 336
 337     // we know the fakeDir is setup properly, so we claim that we have callback
 338     osi_Log0(afsd_logp,"cm_InitFakeRootDir fakeDirCallback=1");
 339     cm_fakeDirCallback=1;
 340
 341     // when we get here, we've set up everything! done!
 342 }
 343
 344 int cm_FakeRootFid(cm_fid_t *fidp)
 345 {
 346     fidp->cell = AFS_FAKE_ROOT_CELL_ID;            /* root cell */
 347     fidp->volume = AFS_FAKE_ROOT_VOL_ID;           /* root.afs ? */
 348     fidp->vnode = 0x1;
 349     fidp->unique = 0x1;
 350     return 0;
 351 }
 352
 353 /* called directly from ioctl */
 354 /* called while not holding freelance lock */
 355 int cm_noteLocalMountPointChange(void) {
 356     lock_ObtainMutex(&cm_Freelance_Lock);
 357     cm_data.fakeDirVersion++;
 358     cm_localMountPointChangeFlag = 1;
 359     lock_ReleaseMutex(&cm_Freelance_Lock);
 360     return 1;
 361 }
 362
 363 int cm_getLocalMountPointChange() {
 364     return cm_localMountPointChangeFlag;
 365 }
 366
 367 int cm_clearLocalMountPointChange() {
 368     cm_localMountPointChangeFlag = 0;
 369     return 0;
 370 }
 371
 372 int cm_reInitLocalMountPoints() {
 373     cm_fid_t aFid;
 374     int i, hash;
 375     cm_scache_t *scp, **lscpp, *tscp;
 376
 377     osi_Log0(afsd_logp,"----- freelance reinitialization starts ----- ");
 378
 379     // first we invalidate all the SCPs that were created
 380     // for the local mount points
 381
 382     osi_Log0(afsd_logp,"Invalidating local mount point scp...  ");
 383
 384     aFid.cell = AFS_FAKE_ROOT_CELL_ID;
 385     aFid.volume=AFS_FAKE_ROOT_VOL_ID;
 386     aFid.unique=0x1;
 387     aFid.vnode=0x2;
 388
 389     lock_ObtainWrite(&cm_scacheLock);
 390     lock_ObtainMutex(&cm_Freelance_Lock);  /* always scache then freelance lock */
 391     for (i=0; i<cm_noLocalMountPoints; i++) {
 392         hash = CM_SCACHE_HASH(&aFid);
 393         for (scp=cm_data.scacheHashTablep[hash]; scp; scp=scp->nextp) {
 394             if (scp->fid.volume == aFid.volume &&
 395                  scp->fid.vnode == aFid.vnode &&
 396                  scp->fid.unique == aFid.unique
 397                  ) {
 398
 399                 // mark the scp to be reused
 400                 cm_HoldSCacheNoLock(scp);
 401                 lock_ReleaseWrite(&cm_scacheLock);
 402                 lock_ObtainMutex(&scp->mx);
 403                 cm_DiscardSCache(scp);
 404                 lock_ReleaseMutex(&scp->mx);
 405                 cm_CallbackNotifyChange(scp);
 406                 lock_ObtainWrite(&cm_scacheLock);
 407                 cm_ReleaseSCacheNoLock(scp);
 408
 409                 // take the scp out of the hash
 410                 for (lscpp = &cm_data.scacheHashTablep[hash], tscp = cm_data.scacheHashTablep[hash];
 411                      tscp;
 412                      lscpp = &tscp->nextp, tscp = tscp->nextp) {
 413                     if (tscp == scp) {
 414                         *lscpp = scp->nextp;
 415                         lock_ObtainMutex(&scp->mx);
 416                         scp->flags &= ~CM_SCACHEFLAG_INHASH;
 417                         lock_ReleaseMutex(&scp->mx);
 418                         break;
 419                     }
 420                 }
 421             }
 422         }
 423         aFid.vnode = aFid.vnode + 1;
 424     }
 425     lock_ReleaseWrite(&cm_scacheLock);
 426     osi_Log0(afsd_logp,"\tall old scp cleared!");
 427
 428     // we must free the memory that was allocated in the prev
 429     // cm_InitLocalMountPoints call
 430     osi_Log0(afsd_logp,"Removing old localmountpoints...  ");
 431     free(cm_localMountPoints);
 432     osi_Log0(afsd_logp,"\tall old localmountpoints cleared!");
 433
 434     // now re-init the localmountpoints
 435     osi_Log0(afsd_logp,"Creating new localmountpoints...  ");
 436     cm_InitLocalMountPoints();
 437     osi_Log0(afsd_logp,"\tcreated new set of localmountpoints!");
 438
 439     // now we have to free the memory allocated in cm_initfakerootdir
 440     osi_Log0(afsd_logp,"Removing old fakedir...  ");
 441     free(cm_FakeRootDir);
 442     osi_Log0(afsd_logp,"\t\told fakedir removed!");
 443
 444     // then we re-create that dir
 445     osi_Log0(afsd_logp,"Creating new fakedir...  ");
 446     cm_InitFakeRootDir();
 447     osi_Log0(afsd_logp,"\t\tcreated new fakedir!");
 448
 449     lock_ReleaseMutex(&cm_Freelance_Lock);
 450
 451     osi_Log0(afsd_logp,"----- freelance reinit complete -----");
 452     return 0;
 453 }
 454
 455
 456 // yj: open up the registry and read all the local mount
 457 // points that are stored there. Part of the initialization
 458 // process for the freelance client.
 459 /* to be called while holding freelance lock unless during init. */
 460 long cm_InitLocalMountPoints() {
 461     FILE *fp;
 462     int i;
 463     char line[512];
 464     char*t, *t2;
 465     cm_localMountPoint_t* aLocalMountPoint;
 466     char hdir[120];
 467     long code;
 468     char rootCellName[256];
 469     HKEY hkFreelance = 0, hkFreelanceSymlinks = 0;
 470     DWORD dwType, dwSize;
 471     DWORD dwMountPoints = 0;
 472     DWORD dwIndex;
 473     DWORD dwSymlinks = 0;
 474     FILETIME ftLastWriteTime;
 475
 476     if (RegOpenKeyEx( HKEY_LOCAL_MACHINE,
 477                       AFSREG_CLT_OPENAFS_SUBKEY "\\Freelance",
 478                       0,
 479                       KEY_READ|KEY_WRITE|KEY_QUERY_VALUE,
 480                       &hkFreelance) == ERROR_SUCCESS) {
 481
 482         RegQueryInfoKey( hkFreelance,
 483                          NULL,  /* lpClass */
 484                          NULL,  /* lpcClass */
 485                          NULL,  /* lpReserved */
 486                          NULL,  /* lpcSubKeys */
 487                          NULL,  /* lpcMaxSubKeyLen */
 488                          NULL,  /* lpcMaxClassLen */
 489                          &dwMountPoints, /* lpcValues */
 490                          NULL,  /* lpcMaxValueNameLen */
 491                          NULL,  /* lpcMaxValueLen */
 492                          NULL,  /* lpcbSecurityDescriptor */
 493                          &ftLastWriteTime /* lpftLastWriteTime */
 494                          );
 495
 496         smb_UnixTimeFromLargeSearchTime(&FakeFreelanceModTime, &ftLastWriteTime);
 497
 498         if ( dwMountPoints == 0 ) {
 499             rootCellName[0] = '.';
 500             code = cm_GetRootCellName(&rootCellName[1]);
 501             if (code == 0) {
 502                 cm_FreelanceAddMount(&rootCellName[1], &rootCellName[1], "root.cell.", 0, NULL);
 503                 cm_FreelanceAddMount(rootCellName, &rootCellName[1], "root.cell.", 1, NULL);
 504                 cm_FreelanceAddMount(".root", &rootCellName[1], "root.afs.", 1, NULL);
 505                 dwMountPoints = 3;
 506             }
 507         }
 508
 509         if (RegCreateKeyEx( HKEY_LOCAL_MACHINE,
 510                           AFSREG_CLT_OPENAFS_SUBKEY "\\Freelance\\Symlinks",
 511                           0,
 512                           NULL,
 513                           REG_OPTION_NON_VOLATILE,
 514                           KEY_READ|KEY_WRITE|KEY_QUERY_VALUE,
 515                           NULL,
 516                           &hkFreelanceSymlinks,
 517                           NULL) == ERROR_SUCCESS) {
 518
 519             RegQueryInfoKey( hkFreelanceSymlinks,
 520                              NULL,  /* lpClass */
 521                              NULL,  /* lpcClass */
 522                              NULL,  /* lpReserved */
 523                              NULL,  /* lpcSubKeys */
 524                              NULL,  /* lpcMaxSubKeyLen */
 525                              NULL,  /* lpcMaxClassLen */
 526                              &dwSymlinks, /* lpcValues */
 527                              NULL,  /* lpcMaxValueNameLen */
 528                              NULL,  /* lpcMaxValueLen */
 529                              NULL,  /* lpcbSecurityDescriptor */
 530                              NULL   /* lpftLastWriteTime */
 531                              );
 532         }
 533
 534         // get the number of entries there are from the first line
 535         // that we read
 536         cm_noLocalMountPoints = dwMountPoints + dwSymlinks;
 537
 538         // create space to store the local mount points
 539         cm_localMountPoints = malloc(sizeof(cm_localMountPoint_t) * cm_noLocalMountPoints);
 540         aLocalMountPoint = cm_localMountPoints;
 541
 542         // now we read n lines and parse them into local mount points
 543         // where n is the number of local mount points there are, as
 544         // determined above.
 545         // Each line in the ini file represents 1 local mount point and
 546         // is in the format xxx#yyy:zzz, where xxx is the directory
 547         // entry name, yyy is the cell name and zzz is the volume name.
 548         // #yyy:zzz together make up the mount point.
 549         for ( dwIndex = 0 ; dwIndex < dwMountPoints; dwIndex++ ) {
 550             TCHAR szValueName[16];
 551             DWORD dwValueSize = 16;
 552             dwSize = sizeof(line);
 553             if (RegEnumValue( hkFreelance, dwIndex, szValueName, &dwValueSize, NULL,
 554                           &dwType, line, &dwSize))
 555             {
 556                 afsi_log("RegEnumValue(hkFreelance) failed");
 557                 cm_noLocalMountPoints--;
 558                 continue;
 559             }
 560
 561             afsi_log("Mountpoint[%d] = %s",dwIndex, line);
 562
 563             /* find the trailing dot; null terminate after it */
 564             t2 = strrchr(line, '.');
 565             if (t2)
 566                 *(t2+1) = '\0';
 567
 568             for ( t=line;*t;t++ ) {
 569                 if ( !isprint(*t) ) {
 570                     afsi_log("error occurred while parsing mountpoint entry [%d]: non-printable character", dwIndex);
 571                     fprintf(stderr, "error occurred while parsing mountpoint entry [%d]: non-printable character", dwIndex);
 572                     cm_noLocalMountPoints--;
 573                     continue;
 574                 }
 575             }
 576
 577             // line is not empty, so let's parse it
 578             t = strchr(line, '#');
 579             if (!t)
 580                 t = strchr(line, '%');
 581             // make sure that there is a '#' or '%' separator in the line
 582             if (!t) {
 583                 afsi_log("error occurred while parsing mountpoint entry [%d]: no # or %% separator", dwIndex);
 584                 fprintf(stderr, "error occurred while parsing mountpoint entry [%d]: no # or %% separator", dwIndex);
 585                 cm_noLocalMountPoints--;
 586                 continue;
 587             }
 588
 589             aLocalMountPoint->fileType = CM_SCACHETYPE_MOUNTPOINT;
 590             aLocalMountPoint->namep=malloc(t-line+1);
 591             strncpy(aLocalMountPoint->namep, line, t-line);
 592             aLocalMountPoint->namep[t-line] = '\0';
 593
 594             /* copy the mount point string */
 595             aLocalMountPoint->mountPointStringp=malloc(strlen(t));
 596             strncpy(aLocalMountPoint->mountPointStringp, t, strlen(t)-1);
 597             aLocalMountPoint->mountPointStringp[strlen(t)-1] = '\0';
 598
 599             osi_Log2(afsd_logp,"found mount point: name %s, string %s",
 600                       osi_LogSaveString(afsd_logp,aLocalMountPoint->namep),
 601                       osi_LogSaveString(afsd_logp,aLocalMountPoint->mountPointStringp));
 602
 603             aLocalMountPoint++;
 604         }
 605
 606         for ( dwIndex = 0 ; dwIndex < dwSymlinks; dwIndex++ ) {
 607             TCHAR szValueName[16];
 608             DWORD dwValueSize = 16;
 609             dwSize = sizeof(line);
 610             if (RegEnumValue( hkFreelanceSymlinks, dwIndex, szValueName, &dwValueSize, NULL,
 611                               &dwType, line, &dwSize))
 612             {
 613                 afsi_log("RegEnumValue(hkFreelanceSymlinks) failed");
 614                 cm_noLocalMountPoints--;
 615                 continue;
 616             }
 617
 618             afsi_log("Symlink[%d] = %s",dwIndex, line);
 619
 620             /* find the trailing dot; null terminate after it */
 621             t2 = strrchr(line, '.');
 622             if (t2)
 623                 *(t2+1) = '\0';
 624
 625             for ( t=line;*t;t++ ) {
 626                 if ( !isprint(*t) ) {
 627                     afsi_log("error occurred while parsing symlink entry [%d]: non-printable character", dwIndex);
 628                     fprintf(stderr, "error occurred while parsing symlink entry [%d]: non-printable character", dwIndex);
 629                     cm_noLocalMountPoints--;
 630                     continue;
 631                 }
 632             }
 633
 634             // line is not empty, so let's parse it
 635             t = strchr(line, ':');
 636
 637             // make sure that there is a ':' separator in the line
 638             if (!t) {
 639                 afsi_log("error occurred while parsing symlink entry [%d]: no ':' separator", dwIndex);
 640                 fprintf(stderr, "error occurred while parsing symlink entry [%d]: no ':' separator", dwIndex);
 641                 cm_noLocalMountPoints--;
 642                 continue;
 643             }
 644
 645             aLocalMountPoint->fileType = CM_SCACHETYPE_SYMLINK;
 646             aLocalMountPoint->namep=malloc(t-line+1);
 647             strncpy(aLocalMountPoint->namep, line, t-line);
 648             aLocalMountPoint->namep[t-line] = '\0';
 649
 650             /* copy the symlink string */
 651             aLocalMountPoint->mountPointStringp=malloc(strlen(t)-1);
 652             strncpy(aLocalMountPoint->mountPointStringp, t+1, strlen(t)-2);
 653             aLocalMountPoint->mountPointStringp[strlen(t)-2] = '\0';
 654
 655             osi_Log2(afsd_logp,"found symlink: name %s, string %s",
 656                       osi_LogSaveString(afsd_logp,aLocalMountPoint->namep),
 657                       osi_LogSaveString(afsd_logp,aLocalMountPoint->mountPointStringp));
 658
 659             aLocalMountPoint++;
 660         }
 661
 662         if ( hkFreelanceSymlinks )
 663             RegCloseKey( hkFreelanceSymlinks );
 664         RegCloseKey(hkFreelance);
 665         return 0;
 666     }
 667
 668     /* What follows is the old code to read freelance mount points
 669      * out of a text file modified to copy the data into the registry
 670      */
 671     cm_GetConfigDir(hdir);
 672     strcat(hdir, AFS_FREELANCE_INI);
 673     // open the ini file for reading
 674     fp = fopen(hdir, "r");
 675     if (!fp) {
 676         /* look in the Windows directory where we used to store the file */
 677         GetWindowsDirectory(hdir, sizeof(hdir));
 678         strcat(hdir,"\\");
 679         strcat(hdir, AFS_FREELANCE_INI);
 680         fp = fopen(hdir, "r");
 681     }
 682
 683     RegCreateKeyEx( HKEY_LOCAL_MACHINE,
 684                     AFSREG_CLT_OPENAFS_SUBKEY "\\Freelance",
 685                     0,
 686                     NULL,
 687                     REG_OPTION_NON_VOLATILE,
 688                     KEY_READ|KEY_WRITE,
 689                     NULL,
 690                     &hkFreelance,
 691                     NULL);
 692     dwIndex = 0;
 693
 694     if (!fp) {
 695         RegCloseKey(hkFreelance);
 696         rootCellName[0] = '.';
 697         code = cm_GetRootCellName(&rootCellName[1]);
 698         if (code == 0) {
 699             cm_FreelanceAddMount(&rootCellName[1], &rootCellName[1], "root.cell.", 0, NULL);
 700             cm_FreelanceAddMount(rootCellName, &rootCellName[1], "root.cell.", 1, NULL);
 701             cm_FreelanceAddMount(".root", &rootCellName[1], "root.afs.", 1, NULL);
 702         }
 703         return 0;
 704     }
 705
 706     // we successfully opened the file
 707     osi_Log0(afsd_logp,"opened afs_freelance.ini");
 708
 709     // now we read the first line to see how many entries
 710     // there are
 711     fgets(line, sizeof(line), fp);
 712
 713     // if the line is empty at any point when we're reading
 714     // we're screwed. report error and return.
 715     if (*line==0) {
 716         afsi_log("error occurred while reading afs_freelance.ini");
 717         fprintf(stderr, "error occurred while reading afs_freelance.ini");
 718         return -1;
 719     }
 720
 721     // get the number of entries there are from the first line
 722     // that we read
 723     cm_noLocalMountPoints = atoi(line);
 724
 725     if (cm_noLocalMountPoints > 0) {
 726         // create space to store the local mount points
 727         cm_localMountPoints = malloc(sizeof(cm_localMountPoint_t) * cm_noLocalMountPoints);
 728         aLocalMountPoint = cm_localMountPoints;
 729     }
 730
 731     // now we read n lines and parse them into local mount points
 732     // where n is the number of local mount points there are, as
 733     // determined above.
 734     // Each line in the ini file represents 1 local mount point and
 735     // is in the format xxx#yyy:zzz, where xxx is the directory
 736     // entry name, yyy is the cell name and zzz is the volume name.
 737     // #yyy:zzz together make up the mount point.
 738     for (i=0; i<cm_noLocalMountPoints; i++) {
 739         fgets(line, sizeof(line), fp);
 740         // check that the line is not empty
 741         if (line[0]==0) {
 742             afsi_log("error occurred while parsing entry in %s: empty line in line %d", AFS_FREELANCE_INI, i);
 743             fprintf(stderr, "error occurred while parsing entry in afs_freelance.ini: empty line in line %d", i);
 744             return -1;
 745         }
 746
 747         /* find the trailing dot; null terminate after it */
 748         t2 = strrchr(line, '.');
 749         if (t2)
 750             *(t2+1) = '\0';
 751
 752         if ( hkFreelance ) {
 753             char szIndex[16];
 754             /* we are migrating to the registry */
 755             sprintf(szIndex,"%d",dwIndex++);
 756             dwType = REG_SZ;
 757             dwSize = (DWORD)strlen(line) + 1;
 758             RegSetValueEx( hkFreelance, szIndex, 0, dwType, line, dwSize);
 759         }
 760
 761         // line is not empty, so let's parse it
 762         t = strchr(line, '#');
 763         if (!t)
 764             t = strchr(line, '%');
 765         // make sure that there is a '#' or '%' separator in the line
 766         if (!t) {
 767             afsi_log("error occurred while parsing entry in %s: no # or %% separator in line %d", AFS_FREELANCE_INI, i);
 768             fprintf(stderr, "error occurred while parsing entry in afs_freelance.ini: no # or %% separator in line %d", i);
 769             return -1;
 770         }
 771         aLocalMountPoint->namep=malloc(t-line+1);
 772         memcpy(aLocalMountPoint->namep, line, t-line);
 773         *(aLocalMountPoint->namep + (t-line)) = 0;
 774
 775         aLocalMountPoint->mountPointStringp=malloc(strlen(line) - (t-line) + 1);
 776         memcpy(aLocalMountPoint->mountPointStringp, t, strlen(line)-(t-line)-1);
 777         *(aLocalMountPoint->mountPointStringp + (strlen(line)-(t-line)-1)) = 0;
 778
 779         osi_Log2(afsd_logp,"found mount point: name %s, string %s",
 780                   aLocalMountPoint->namep,
 781                   aLocalMountPoint->mountPointStringp);
 782
 783         aLocalMountPoint++;
 784     }
 785     fclose(fp);
 786     if ( hkFreelance ) {
 787         RegCloseKey(hkFreelance);
 788         DeleteFile(hdir);
 789     }
 790     return 0;
 791 }
 792
 793 int cm_getNoLocalMountPoints() {
 794     return cm_noLocalMountPoints;
 795 }
 796
 797 long cm_FreelanceMountPointExists(char * filename)
 798 {
 799     char* cp;
 800     char line[512];
 801     char shortname[200];
 802     int found = 0;
 803     HKEY hkFreelance = 0;
 804     DWORD dwType, dwSize;
 805     DWORD dwMountPoints;
 806     DWORD dwIndex;
 807
 808     lock_ObtainMutex(&cm_Freelance_Lock);
 809
 810     if (RegOpenKeyEx( HKEY_LOCAL_MACHINE,
 811                       AFSREG_CLT_OPENAFS_SUBKEY "\\Freelance",
 812                       0,
 813                       KEY_READ|KEY_QUERY_VALUE,
 814                       &hkFreelance) == ERROR_SUCCESS)
 815     {
 816         RegQueryInfoKey( hkFreelance,
 817                          NULL,  /* lpClass */
 818                          NULL,  /* lpcClass */
 819                          NULL,  /* lpReserved */
 820                          NULL,  /* lpcSubKeys */
 821                          NULL,  /* lpcMaxSubKeyLen */
 822                          NULL,  /* lpcMaxClassLen */
 823                          &dwMountPoints, /* lpcValues */
 824                          NULL,  /* lpcMaxValueNameLen */
 825                          NULL,  /* lpcMaxValueLen */
 826                          NULL,  /* lpcbSecurityDescriptor */
 827                          NULL   /* lpftLastWriteTime */
 828                          );
 829
 830         for ( dwIndex = 0; dwIndex < dwMountPoints; dwIndex++ ) {
 831             TCHAR szValueName[16];
 832             DWORD dwValueSize = 16;
 833             dwSize = sizeof(line);
 834             RegEnumValue( hkFreelance, dwIndex, szValueName, &dwValueSize, NULL,
 835                           &dwType, line, &dwSize);
 836
 837             cp=strchr(line, '#');
 838             if (!cp)
 839                 cp=strchr(line, '%');
 840             memcpy(shortname, line, cp-line);
 841             shortname[cp-line]=0;
 842
 843             if (!strcmp(shortname, filename)) {
 844                 found = 1;
 845                 break;
 846             }
 847         }
 848         for ( dwIndex = 0; dwIndex < dwMountPoints; dwIndex++ ) {
 849             TCHAR szValueName[16];
 850             DWORD dwValueSize = 16;
 851             dwSize = sizeof(line);
 852             RegEnumValue( hkFreelance, dwIndex, szValueName, &dwValueSize, NULL,
 853                           &dwType, line, &dwSize);
 854
 855             cp=strchr(line, '#');
 856             if (!cp)
 857                 cp=strchr(line, '%');
 858             memcpy(shortname, line, cp-line);
 859             shortname[cp-line]=0;
 860
 861             if (!stricmp(shortname, filename)) {
 862                 found = 1;
 863                 break;
 864             }
 865         }
 866         RegCloseKey(hkFreelance);
 867     }
 868
 869     lock_ReleaseMutex(&cm_Freelance_Lock);
 870
 871     return found;
 872 }
 873
 874 long cm_FreelanceSymlinkExists(char * filename)
 875 {
 876     char* cp;
 877     char line[512];
 878     char shortname[200];
 879     int found = 0;
 880     HKEY hkFreelance = 0;
 881     DWORD dwType, dwSize;
 882     DWORD dwSymlinks;
 883     DWORD dwIndex;
 884
 885     lock_ObtainMutex(&cm_Freelance_Lock);
 886
 887     if (RegOpenKeyEx( HKEY_LOCAL_MACHINE,
 888                       AFSREG_CLT_OPENAFS_SUBKEY "\\Freelance\\Symlinks",
 889                       0,
 890                       KEY_READ|KEY_QUERY_VALUE,
 891                       &hkFreelance) == ERROR_SUCCESS)
 892     {
 893         RegQueryInfoKey( hkFreelance,
 894                          NULL,  /* lpClass */
 895                          NULL,  /* lpcClass */
 896                          NULL,  /* lpReserved */
 897                          NULL,  /* lpcSubKeys */
 898                          NULL,  /* lpcMaxSubKeyLen */
 899                          NULL,  /* lpcMaxClassLen */
 900                          &dwSymlinks, /* lpcValues */
 901                          NULL,  /* lpcMaxValueNameLen */
 902                          NULL,  /* lpcMaxValueLen */
 903                          NULL,  /* lpcbSecurityDescriptor */
 904                          NULL   /* lpftLastWriteTime */
 905                          );
 906
 907         for ( dwIndex = 0; dwIndex < dwSymlinks; dwIndex++ ) {
 908             TCHAR szValueName[16];
 909             DWORD dwValueSize = 16;
 910             dwSize = sizeof(line);
 911             RegEnumValue( hkFreelance, dwIndex, szValueName, &dwValueSize, NULL,
 912                           &dwType, line, &dwSize);
 913
 914             cp=strchr(line, ':');
 915             memcpy(shortname, line, cp-line);
 916             shortname[cp-line]=0;
 917
 918             if (!strcmp(shortname, filename)) {
 919                 found = 1;
 920                 break;
 921             }
 922         }
 923         for ( dwIndex = 0; dwIndex < dwSymlinks; dwIndex++ ) {
 924             TCHAR szValueName[16];
 925             DWORD dwValueSize = 16;
 926             dwSize = sizeof(line);
 927             RegEnumValue( hkFreelance, dwIndex, szValueName, &dwValueSize, NULL,
 928                           &dwType, line, &dwSize);
 929
 930             cp=strchr(line, ':');
 931             memcpy(shortname, line, cp-line);
 932             shortname[cp-line]=0;
 933
 934             if (!stricmp(shortname, filename)) {
 935                 found = 1;
 936                 break;
 937             }
 938         }
 939         RegCloseKey(hkFreelance);
 940     }
 941
 942     lock_ReleaseMutex(&cm_Freelance_Lock);
 943
 944     return found;
 945 }
 946
 947 long cm_FreelanceAddMount(char *filename, char *cellname, char *volume, int rw, cm_fid_t *fidp)
 948 {
 949     FILE *fp;
 950     char hfile[120];
 951     char line[512];
 952     char fullname[200];
 953     int n;
 954     int alias = 0;
 955     HKEY hkFreelance = 0;
 956     DWORD dwType, dwSize;
 957     DWORD dwMountPoints;
 958     DWORD dwIndex;
 959
 960     /* before adding, verify the cell name; if it is not a valid cell,
 961        don't add the mount point.
 962        allow partial matches as a means of poor man's alias. */
 963     /* major performance issue? */
 964     osi_Log4(afsd_logp,"Freelance Add Mount request: filename=%s cellname=%s volume=%s %s",
 965               osi_LogSaveString(afsd_logp,filename),
 966               osi_LogSaveString(afsd_logp,cellname),
 967               osi_LogSaveString(afsd_logp,volume),
 968               rw ? "rw" : "ro");
 969
 970     if ( filename[0] == '\0' || cellname[0] == '\0' || volume[0] == '\0' )
 971         return -1;
 972
 973     if (cellname[0] == '.') {
 974         if (!cm_GetCell_Gen(&cellname[1], fullname, CM_FLAG_CREATE))
 975             return -1;
 976     } else {
 977         if (!cm_GetCell_Gen(cellname, fullname, CM_FLAG_CREATE))
 978             return -1;
 979     }
 980
 981     if ( cm_FreelanceMountPointExists(filename) ||
 982          cm_FreelanceSymlinkExists(filename) )
 983         return -1;
 984
 985     osi_Log1(afsd_logp,"Freelance Adding Mount for Cell: %s",
 986               osi_LogSaveString(afsd_logp,cellname));
 987
 988     lock_ObtainMutex(&cm_Freelance_Lock);
 989
 990     if (RegOpenKeyEx( HKEY_LOCAL_MACHINE,
 991                       AFSREG_CLT_OPENAFS_SUBKEY "\\Freelance",
 992                       0,
 993                       KEY_READ|KEY_WRITE|KEY_QUERY_VALUE,
 994                       &hkFreelance) == ERROR_SUCCESS) {
 995
 996         RegQueryInfoKey( hkFreelance,
 997                          NULL,  /* lpClass */
 998                          NULL,  /* lpcClass */
 999                          NULL,  /* lpReserved */
1000                          NULL,  /* lpcSubKeys */
1001                          NULL,  /* lpcMaxSubKeyLen */
1002                          NULL,  /* lpcMaxClassLen */
1003                          &dwMountPoints, /* lpcValues */
1004                          NULL,  /* lpcMaxValueNameLen */
1005                          NULL,  /* lpcMaxValueLen */
1006                          NULL,  /* lpcbSecurityDescriptor */
1007                          NULL   /* lpftLastWriteTime */
1008                          );
1009
1010         if (rw)
1011             sprintf(line, "%s%%%s:%s", filename, fullname, volume);
1012         else
1013             sprintf(line, "%s#%s:%s", filename, fullname, volume);
1014
1015         /* If we are adding a new value, there must be an unused name
1016          * within the range 0 to dwMountPoints
1017          */
1018         for ( dwIndex = 0; dwIndex <= dwMountPoints; dwIndex++ ) {
1019             char szIndex[16];
1020             char szMount[1024];
1021
1022             dwSize = sizeof(szMount);
1023             sprintf(szIndex, "%d", dwIndex);
1024             if (RegQueryValueEx( hkFreelance, szIndex, 0, &dwType, szMount, &dwSize) != ERROR_SUCCESS) {
1025                 /* found an unused value */
1026                 dwType = REG_SZ;
1027                 dwSize = (DWORD)strlen(line) + 1;
1028                 RegSetValueEx( hkFreelance, szIndex, 0, dwType, line, dwSize);
1029                 break;
1030             } else {
1031                 int len = (int)strlen(filename);
1032                 if ( dwType == REG_SZ && !strncmp(filename, szMount, len) &&
1033                      (szMount[len] == '%' || szMount[len] == '#')) {
1034                     /* Replace the existing value */
1035                     dwType = REG_SZ;
1036                     dwSize = (DWORD)strlen(line) + 1;
1037                     RegSetValueEx( hkFreelance, szIndex, 0, dwType, line, dwSize);
1038                     break;
1039                 }
1040             }
1041         }
1042         RegCloseKey(hkFreelance);
1043     } else
1044     {
1045         cm_GetConfigDir(hfile);
1046         strcat(hfile, AFS_FREELANCE_INI);
1047         fp = fopen(hfile, "r+");
1048         if (!fp)
1049             return CM_ERROR_INVAL;
1050         fgets(line, sizeof(line), fp);
1051         n = atoi(line);
1052         n++;
1053         fseek(fp, 0, SEEK_SET);
1054         fprintf(fp, "%d", n);
1055         fseek(fp, 0, SEEK_END);
1056         if (rw)
1057             fprintf(fp, "%s%%%s:%s\n", filename, fullname, volume);
1058         else
1059             fprintf(fp, "%s#%s:%s\n", filename, fullname, volume);
1060         fclose(fp);
1061     }
1062     lock_ReleaseMutex(&cm_Freelance_Lock);
1063
1064     /* cm_reInitLocalMountPoints(); */
1065     if (fidp) {
1066         fidp->unique = 1;
1067         fidp->vnode = cm_noLocalMountPoints + 1;   /* vnode value of last mt pt */
1068     }
1069     cm_noteLocalMountPointChange();
1070     return 0;
1071 }
1072
1073 long cm_FreelanceRemoveMount(char *toremove)
1074 {
1075     int i, n;
1076     char* cp;
1077     char line[512];
1078     char shortname[200];
1079     char hfile[120], hfile2[120];
1080     FILE *fp1, *fp2;
1081     int found=0;
1082     HKEY hkFreelance = 0;
1083     DWORD dwType, dwSize;
1084     DWORD dwMountPoints;
1085     DWORD dwIndex;
1086
1087     lock_ObtainMutex(&cm_Freelance_Lock);
1088
1089     if (RegOpenKeyEx( HKEY_LOCAL_MACHINE,
1090                       AFSREG_CLT_OPENAFS_SUBKEY "\\Freelance",
1091                       0,
1092                       KEY_READ|KEY_WRITE|KEY_QUERY_VALUE,
1093                       &hkFreelance) == ERROR_SUCCESS) {
1094
1095         RegQueryInfoKey( hkFreelance,
1096                          NULL,  /* lpClass */
1097                          NULL,  /* lpcClass */
1098                          NULL,  /* lpReserved */
1099                          NULL,  /* lpcSubKeys */
1100                          NULL,  /* lpcMaxSubKeyLen */
1101                          NULL,  /* lpcMaxClassLen */
1102                          &dwMountPoints, /* lpcValues */
1103                          NULL,  /* lpcMaxValueNameLen */
1104                          NULL,  /* lpcMaxValueLen */
1105                          NULL,  /* lpcbSecurityDescriptor */
1106                          NULL   /* lpftLastWriteTime */
1107                          );
1108
1109         for ( dwIndex = 0; dwIndex < dwMountPoints; dwIndex++ ) {
1110             TCHAR szValueName[16];
1111             DWORD dwValueSize = 16;
1112             dwSize = sizeof(line);
1113             RegEnumValue( hkFreelance, dwIndex, szValueName, &dwValueSize, NULL,
1114                           &dwType, line, &dwSize);
1115
1116             cp=strchr(line, '#');
1117             if (!cp)
1118                 cp=strchr(line, '%');
1119             memcpy(shortname, line, cp-line);
1120             shortname[cp-line]=0;
1121
1122             if (!strcmp(shortname, toremove)) {
1123                 RegDeleteValue( hkFreelance, szValueName );
1124                 break;
1125             }
1126         }
1127         RegCloseKey(hkFreelance);
1128     } else
1129     {
1130         cm_GetConfigDir(hfile);
1131         strcat(hfile, AFS_FREELANCE_INI);
1132         strcpy(hfile2, hfile);
1133         strcat(hfile2, "2");
1134         fp1=fopen(hfile, "r+");
1135         if (!fp1)
1136             return CM_ERROR_INVAL;
1137         fp2=fopen(hfile2, "w+");
1138         if (!fp2) {
1139             fclose(fp1);
1140             return CM_ERROR_INVAL;
1141         }
1142
1143         fgets(line, sizeof(line), fp1);
1144         n=atoi(line);
1145         fprintf(fp2, "%d\n", n-1);
1146
1147         for (i=0; i<n; i++) {
1148             fgets(line, sizeof(line), fp1);
1149             cp=strchr(line, '#');
1150             if (!cp)
1151                 cp=strchr(line, '%');
1152             memcpy(shortname, line, cp-line);
1153             shortname[cp-line]=0;
1154
1155             if (strcmp(shortname, toremove)==0) {
1156
1157             } else {
1158                 found = 1;
1159                 fputs(line, fp2);
1160             }
1161         }
1162
1163         fclose(fp1);
1164         fclose(fp2);
1165         if (!found)
1166             return CM_ERROR_NOSUCHFILE;
1167
1168         unlink(hfile);
1169         rename(hfile2, hfile);
1170     }
1171
1172     lock_ReleaseMutex(&cm_Freelance_Lock);
1173     cm_noteLocalMountPointChange();
1174     return 0;
1175 }
1176
1177 long cm_FreelanceAddSymlink(char *filename, char *destination, cm_fid_t *fidp)
1178 {
1179     char line[512];
1180     char fullname[200];
1181     int alias = 0;
1182     HKEY hkFreelanceSymlinks = 0;
1183     DWORD dwType, dwSize;
1184     DWORD dwSymlinks;
1185     DWORD dwIndex;
1186
1187     /* before adding, verify the filename.  If it is already in use, either as
1188      * as mount point or a cellname, do not permit the creation of the symlink.
1189      */
1190     osi_Log2(afsd_logp,"Freelance Add Symlink request: filename=%s destination=%s",
1191               osi_LogSaveString(afsd_logp,filename),
1192               osi_LogSaveString(afsd_logp,destination));
1193
1194     if ( filename[0] == '\0' || destination[0] == '\0' )
1195         return CM_ERROR_INVAL;
1196
1197     fullname[0] = '\0';
1198     if (filename[0] == '.') {
1199         cm_GetCell_Gen(&filename[1], fullname, CM_FLAG_CREATE);
1200         if (stricmp(&filename[1],fullname) == 0)
1201             return CM_ERROR_EXISTS;
1202     } else {
1203         cm_GetCell_Gen(filename, fullname, CM_FLAG_CREATE);
1204         if (stricmp(filename,fullname) == 0)
1205             return CM_ERROR_EXISTS;
1206     }
1207
1208     if ( cm_FreelanceMountPointExists(filename) ||
1209          cm_FreelanceSymlinkExists(filename) )
1210         return CM_ERROR_EXISTS;
1211
1212     lock_ObtainMutex(&cm_Freelance_Lock);
1213
1214     if (RegCreateKeyEx( HKEY_LOCAL_MACHINE,
1215                         AFSREG_CLT_OPENAFS_SUBKEY "\\Freelance\\Symlinks",
1216                         0,
1217                         NULL,
1218                         REG_OPTION_NON_VOLATILE,
1219                         KEY_READ|KEY_WRITE|KEY_QUERY_VALUE,
1220                         NULL,
1221                         &hkFreelanceSymlinks,
1222                         NULL) == ERROR_SUCCESS) {
1223
1224         RegQueryInfoKey( hkFreelanceSymlinks,
1225                          NULL,  /* lpClass */
1226                          NULL,  /* lpcClass */
1227                          NULL,  /* lpReserved */
1228                          NULL,  /* lpcSubKeys */
1229                          NULL,  /* lpcMaxSubKeyLen */
1230                          NULL,  /* lpcMaxClassLen */
1231                          &dwSymlinks, /* lpcValues */
1232                          NULL,  /* lpcMaxValueNameLen */
1233                          NULL,  /* lpcMaxValueLen */
1234                          NULL,  /* lpcbSecurityDescriptor */
1235                          NULL   /* lpftLastWriteTime */
1236                          );
1237
1238         sprintf(line, "%s:%s.", filename, destination);
1239
1240         /* If we are adding a new value, there must be an unused name
1241          * within the range 0 to dwSymlinks
1242          */
1243         for ( dwIndex = 0; dwIndex <= dwSymlinks; dwIndex++ ) {
1244             char szIndex[16];
1245             char szLink[1024];
1246
1247             dwSize = sizeof(szLink);
1248             sprintf(szIndex, "%d", dwIndex);
1249             if (RegQueryValueEx( hkFreelanceSymlinks, szIndex, 0, &dwType, szLink, &dwSize) != ERROR_SUCCESS) {
1250                 /* found an unused value */
1251                 dwType = REG_SZ;
1252                 dwSize = (DWORD)strlen(line) + 1;
1253                 RegSetValueEx( hkFreelanceSymlinks, szIndex, 0, dwType, line, dwSize);
1254                 break;
1255             } else {
1256                 int len = (int)strlen(filename);
1257                 if ( dwType == REG_SZ && !strncmp(filename, szLink, len) && szLink[len] == ':') {
1258                     /* Replace the existing value */
1259                     dwType = REG_SZ;
1260                     dwSize = (DWORD)strlen(line) + 1;
1261                     RegSetValueEx( hkFreelanceSymlinks, szIndex, 0, dwType, line, dwSize);
1262                     break;
1263                 }
1264             }
1265         }
1266         RegCloseKey(hkFreelanceSymlinks);
1267     }
1268     lock_ReleaseMutex(&cm_Freelance_Lock);
1269
1270     /* cm_reInitLocalMountPoints(); */
1271     if (fidp) {
1272         fidp->unique = 1;
1273         fidp->vnode = cm_noLocalMountPoints + 1;   /* vnode value of last mt pt */
1274     }
1275     cm_noteLocalMountPointChange();
1276     return 0;
1277 }
1278
1279 long cm_FreelanceRemoveSymlink(char *toremove)
1280 {
1281     char* cp;
1282     char line[512];
1283     char shortname[200];
1284     int found=0;
1285     HKEY hkFreelanceSymlinks = 0;
1286     DWORD dwType, dwSize;
1287     DWORD dwSymlinks;
1288     DWORD dwIndex;
1289
1290     lock_ObtainMutex(&cm_Freelance_Lock);
1291
1292     if (RegOpenKeyEx( HKEY_LOCAL_MACHINE,
1293                       AFSREG_CLT_OPENAFS_SUBKEY "\\Freelance\\Symlinks",
1294                       0,
1295                       KEY_READ|KEY_WRITE|KEY_QUERY_VALUE,
1296                       &hkFreelanceSymlinks) == ERROR_SUCCESS) {
1297
1298         RegQueryInfoKey( hkFreelanceSymlinks,
1299                          NULL,  /* lpClass */
1300                          NULL,  /* lpcClass */
1301                          NULL,  /* lpReserved */
1302                          NULL,  /* lpcSubKeys */
1303                          NULL,  /* lpcMaxSubKeyLen */
1304                          NULL,  /* lpcMaxClassLen */
1305                          &dwSymlinks, /* lpcValues */
1306                          NULL,  /* lpcMaxValueNameLen */
1307                          NULL,  /* lpcMaxValueLen */
1308                          NULL,  /* lpcbSecurityDescriptor */
1309                          NULL   /* lpftLastWriteTime */
1310                          );
1311
1312         for ( dwIndex = 0; dwIndex < dwSymlinks; dwIndex++ ) {
1313             TCHAR szValueName[16];
1314             DWORD dwValueSize = 16;
1315             dwSize = sizeof(line);
1316             RegEnumValue( hkFreelanceSymlinks, dwIndex, szValueName, &dwValueSize, NULL,
1317                           &dwType, line, &dwSize);
1318
1319             cp=strchr(line, ':');
1320             memcpy(shortname, line, cp-line);
1321             shortname[cp-line]=0;
1322
1323             if (!strcmp(shortname, toremove)) {
1324                 RegDeleteValue( hkFreelanceSymlinks, szValueName );
1325                 break;
1326             }
1327         }
1328         RegCloseKey(hkFreelanceSymlinks);
1329     }
1330
1331     lock_ReleaseMutex(&cm_Freelance_Lock);
1332     cm_noteLocalMountPointChange();
1333     return 0;
1334 }
1335 #endif /* AFS_FREELANCE_CLIENT */