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
11 * afs_init.c - initialize AFS client.
16 #include <afsconfig.h>
17 #include "afs/param.h"
21 #include "afs/sysincludes.h" /* Standard vendor system headers */
22 #include "afsincludes.h" /* Afs-based standard headers */
23 #include "afs/afs_stats.h" /* afs statistics */
24 #include "rx/rxstat.h"
25 #if defined(AFS_LINUX_ENV) && defined(STRUCT_TASK_STRUCT_HAS_CRED)
26 # include <linux/cred.h>
29 #define FSINT_COMMON_XG
30 #include "afs/afscbint.h"
32 /* Exported variables */
33 struct osi_dev cacheDev; /*Cache device */
34 afs_int32 cacheInfoModTime; /*Last time cache info modified */
35 #if defined(AFS_DARWIN_ENV) || defined(AFS_FBSD_ENV) || defined(AFS_NBSD_ENV)
36 struct mount *afs_cacheVfsp = 0;
37 #elif defined(AFS_LINUX_ENV)
38 struct super_block *afs_cacheSBp = 0;
40 struct vfs *afs_cacheVfsp = 0;
42 afs_rwlock_t afs_puttofileLock; /* not used */
43 char *afs_sysname = 0; /* So that superuser may change the
44 * local value of @sys */
45 char *afs_sysnamelist[MAXNUMSYSNAMES]; /* For support of a list of sysname */
46 int afs_sysnamecount = 0;
47 int afs_sysnamegen = 0;
48 struct volume *Initialafs_freeVolList;
49 int afs_memvolumes = 0;
50 #if defined(AFS_XBSD_ENV)
51 static struct vnode *volumeVnode;
53 afs_rwlock_t afs_discon_lock;
54 extern afs_rwlock_t afs_disconDirtyLock;
55 #if defined(AFS_LINUX_ENV) && defined(STRUCT_TASK_STRUCT_HAS_CRED)
56 const struct cred *cache_creds;
59 /* This is the kernel side of the dynamic vcache setting */
60 int afsd_dynamic_vcaches = 0; /* Enable dynamic-vcache support */
63 * Initialization order is important. Must first call afs_CacheInit,
64 * then cache file and volume file initialization routines. Next, the
65 * individual cache entry initialization routines are called.
75 * astatSize : The number of stat cache (vnode) entries to
77 * afiles : The number of disk files to allocate to the cache
78 * ablocks : The max number of 1 Kbyte blocks that all of
79 * the files in the cache may occupy.
80 * aDentries : Number of dcache entries to allocate.
81 * aVolumes : Number of volume cache entries to allocate.
82 * achunk : Power of 2 to make the chunks.
83 * aflags : Flags passed in.
84 * inodes : max inodes to pin down in inode[]
85 * users : what should size of per-user access cache be?
88 * This routine should only be called at initialization time, since
89 * it reclaims no resources and doesn't sufficiently synchronize
90 * with other processes.
93 struct cm_initparams cm_initParams;
94 static int afs_cacheinit_flag = 0;
96 afs_CacheInit(afs_int32 astatSize, afs_int32 afiles, afs_int32 ablocks,
97 afs_int32 aDentries, afs_int32 aVolumes, afs_int32 achunk,
98 afs_int32 aflags, afs_int32 ninodes, afs_int32 nusers,
99 afs_int32 dynamic_vcaches)
105 AFS_STATCNT(afs_CacheInit);
107 * Jot down the epoch time, namely when this incarnation of the
108 * Cache Manager started.
110 afs_stats_cmperf.epoch = pag_epoch = osi_Time();
112 afs_stats_cmperf.sysName_ID = SYS_NAME_ID;
114 afs_stats_cmperf.sysName_ID = SYS_NAME_ID_UNDEFINED;
115 #endif /* SYS_NAME_ID */
117 #ifdef AFS_MAXVCOUNT_ENV
118 afsd_dynamic_vcaches = dynamic_vcaches;
119 afs_warn("%s dynamically allocated vcaches\n",
120 ( afsd_dynamic_vcaches ? "enabling" : "disabling" ));
123 afs_warn("Starting AFS cache scan...");
124 if (afs_cacheinit_flag)
126 afs_cacheinit_flag = 1;
127 cacheInfoModTime = 0;
129 LOCK_INIT(&afs_ftf, "afs_ftf");
130 AFS_RWLOCK_INIT(&afs_xaxs, "afs_xaxs");
131 AFS_RWLOCK_INIT(&afs_discon_lock, "afs_discon_lock");
132 AFS_RWLOCK_INIT(&afs_disconDirtyLock, "afs_disconDirtyLock");
133 QInit(&afs_disconDirty);
134 QInit(&afs_disconShadow);
138 * create volume list structure
142 else if (aVolumes > 32767)
145 tv = afs_osi_Alloc(aVolumes * sizeof(struct volume));
146 osi_Assert(tv != NULL);
147 for (i = 0; i < aVolumes - 1; i++)
148 tv[i].next = &tv[i + 1];
149 tv[aVolumes - 1].next = NULL;
150 afs_freeVolList = Initialafs_freeVolList = tv;
151 afs_memvolumes = aVolumes;
153 afs_cacheFiles = afiles;
154 afs_cacheStats = astatSize;
155 afs_vcacheInit(astatSize);
156 code = afs_dcacheInit(afiles, ablocks, aDentries, achunk, aflags);
160 #if defined(AFS_LINUX_ENV) && defined(STRUCT_TASK_STRUCT_HAS_CRED)
162 * Save current credentials for later access to disk cache files.
163 * If selinux, apparmor or other security modules are enabled,
164 * they might deny access to cache files if the userspace process
165 * is restricted. Save the credentials used at cache initialisation
166 * for later use when opening cache files.
168 cache_creds = get_current_cred();
170 #ifdef AFS_64BIT_CLIENT
171 # ifdef AFS_VM_RDWR_ENV
172 afs_vmMappingEnd = AFS_CHUNKBASE(0x7fffffff);
174 #endif /* AFS_64BIT_CLIENT */
176 #if defined(AFS_AIX_ENV) && !defined(AFS_AIX51_ENV)
178 static void afs_procsize_init(void);
184 /* Save the initialization parameters for later pioctl queries. */
185 cm_initParams.cmi_version = CMI_VERSION;
186 cm_initParams.cmi_nChunkFiles = afiles;
187 cm_initParams.cmi_nStatCaches = astatSize;
188 cm_initParams.cmi_nDataCaches = aDentries;
189 cm_initParams.cmi_nVolumeCaches = aVolumes;
190 cm_initParams.cmi_firstChunkSize = AFS_FIRSTCSIZE;
191 cm_initParams.cmi_otherChunkSize = AFS_OTHERCSIZE;
192 cm_initParams.cmi_cacheSize = afs_cacheBlocks;
193 cm_initParams.cmi_setTime = 0;
194 cm_initParams.cmi_memCache = (aflags & AFSCALL_INIT_MEMCACHE) ? 1 : 0;
202 * afs_ComputeCacheParams
205 * Set some cache parameters.
212 afs_ComputeCacheParms(void)
215 afs_int32 afs_maxCacheDirty;
218 * Don't allow more than 2/3 of the files in the cache to be dirty.
220 afs_maxCacheDirty = (2 * afs_cacheFiles) / 3;
223 * Also, don't allow more than 2/3 of the total space get filled
224 * with dirty chunks. Compute the total number of chunks required
225 * to fill the cache, make sure we don't set out limit above 2/3 of
226 * that. If the cache size is greater than 1G, avoid overflow at
227 * the expense of precision on the chunk size.
229 if (afs_cacheBlocks & 0xffe00000) {
230 i = afs_cacheBlocks / (AFS_FIRSTCSIZE >> 10);
232 i = (afs_cacheBlocks << 10) / AFS_FIRSTCSIZE;
235 if (afs_maxCacheDirty > i)
236 afs_maxCacheDirty = i;
237 if (afs_maxCacheDirty < 1)
238 afs_maxCacheDirty = 1;
239 afs_stats_cmperf.cacheMaxDirtyChunks = afs_maxCacheDirty;
240 } /*afs_ComputeCacheParms */
244 * afs_LookupInodeByPath
246 * Look up inode given a file name.
247 * Optionally return the vnode too.
248 * If the vnode is not returned, we rele it.
251 afs_LookupInodeByPath(char *filename, afs_ufs_dcache_id_t *inode,
256 #if defined(AFS_LINUX_ENV)
258 code = gop_lookupname(filename, AFS_UIOSYS, 0, &dp);
261 osi_get_fh(dp, inode);
263 #else /* AFS_LINUX_ENV */
264 struct vnode *filevp;
265 code = gop_lookupname(filename, AFS_UIOSYS, 0, &filevp);
268 # ifdef AFS_CACHE_VNODE_PATH
269 *inode = afs_strdup(filename);
271 *inode = afs_vnodeToInumber(filevp);
278 #endif /* AFS_LINUX_ENV */
284 afs_InitCellInfo(char *afile)
286 afs_dcache_id_t inode;
289 code = afs_LookupInodeByPath(afile, &inode.ufs, NULL);
290 return afs_cellname_init(&inode, code);
297 * Set up the volume info storage file.
300 * afile : the file to be declared to be the volume info storage
301 * file for AFS. It must be already truncated to 0 length.
304 * This function is called only during initialization.
306 * WARNING: Data will be written to this file over time by AFS.
310 afs_InitVolumeInfo(char *afile)
313 struct osi_file *tfile;
315 AFS_STATCNT(afs_InitVolumeInfo);
316 #if defined(AFS_XBSD_ENV)
318 * On Open/Free/NetBSD, we can get into big trouble if we don't hold the volume file
319 * vnode. SetupVolume holds afs_xvolume lock exclusive.
320 * SetupVolume->GetVolSlot->UFSGetVolSlot->{GetVolCache or WriteVolCache}
321 * ->osi_UFSOpen->VFS_VGET()->ffs_vget->getnewvnode->vgone on some vnode.
322 * If it's AFS, then ->vclean->afs_nbsd_reclaim->FlushVCache->QueueVCB->
323 * GetVolume->FindVolume-> waits on afs_xvolume lock !
325 * In general, anything that's called with afs_xvolume locked must not
326 * end up calling getnewvnode(). The only cases I've found so far
327 * are things which try to get the volumeInode, and since we keep
330 code = afs_LookupInodeByPath(afile, &volumeInode.ufs, &volumeVnode);
332 code = afs_LookupInodeByPath(afile, &volumeInode.ufs, NULL);
333 #endif /* AFS_XBSD_ENV */
336 tfile = afs_CFileOpen(&volumeInode);
340 afs_CFileTruncate(tfile, 0);
341 afs_CFileClose(tfile);
346 afs_InitFHeader(struct afs_fheader *aheader)
348 memset(aheader, 0, sizeof(*aheader));
349 aheader->magic = AFS_FHMAGIC;
350 aheader->version = AFS_CI_VERSION;
351 aheader->dataSize = sizeof(struct fcache);
352 aheader->firstCSize = AFS_FIRSTCSIZE;
353 aheader->otherCSize = AFS_OTHERCSIZE;
360 * Set up the given file as the AFS cache info file.
363 * afile : Name of the file assumed to be the cache info file
364 * for the Cache Manager; it will be used as such.
365 * Side Effects: This sets afs_fragsize, which is used in the cache usage
366 * calculations such as in afs_adjustsize()
369 * This function is called only during initialization. The given
370 * file should NOT be truncated to 0 length; its contents describe
371 * what data is really in the cache.
373 * WARNING: data will be written to this file over time by AFS.
375 * NOTE: Starting to use separate osi_InitCacheInfo() routines to clean up
380 afs_InitCacheInfo(char *afile)
383 struct osi_stat tstat;
384 struct osi_file *tfile;
385 struct afs_fheader theader;
386 #ifndef AFS_LINUX_ENV
387 struct vnode *filevp;
391 AFS_STATCNT(afs_InitCacheInfo);
392 if (cacheDiskType != AFS_FCACHE_TYPE_UFS)
393 osi_Panic("afs_InitCacheInfo --- called for non-ufs cache!");
395 code = osi_InitCacheInfo(afile);
399 code = gop_lookupname(afile, AFS_UIOSYS, 0, &filevp);
403 # if defined(AFS_SUN5_ENV)
405 # elif defined(AFS_HPUX102_ENV)
407 # elif defined(AFS_SGI_ENV) || defined(AFS_HPUX100_ENV) || defined(AFS_NBSD40_ENV)
409 # elif defined(AFS_DARWIN80_ENV)
413 # endif /* AFS_SUN5_ENV */
415 # if defined(AFS_SGI_ENV)
416 VFS_STATVFS(filevp->v_vfsp, &st, NULL, code);
418 # elif defined(AFS_SUN5_ENV) || defined(AFS_HPUX100_ENV)
419 if (!VFS_STATVFS(filevp->v_vfsp, &st))
420 # elif defined(AFS_AIX41_ENV)
421 if (!VFS_STATFS(filevp->v_vfsp, &st, &afs_osi_cred))
422 # elif defined(AFS_DARWIN80_ENV)
423 afs_cacheVfsp = vnode_mount(filevp);
424 if (afs_cacheVfsp && ((st = *(vfs_statfs(afs_cacheVfsp))),1))
425 # elif defined(AFS_FBSD_ENV)
426 if (!VFS_STATFS(filevp->v_mount, &st))
427 # elif defined(AFS_NBSD50_ENV)
428 if (!VFS_STATVFS(filevp->v_vfsp, &st))
429 # elif defined(AFS_DARWIN_ENV) || defined(AFS_XBSD_ENV)
430 if (!VFS_STATFS(filevp->v_mount, &st, osi_curproc()))
432 if (!VFS_STATFS(filevp->v_vfsp, &st))
433 # endif /* AFS_SGI_ENV */
434 # if defined(AFS_SUN5_ENV) || defined(AFS_HPUX100_ENV)
435 if (strcmp("zfs", st.f_basetype) == 0) {
437 * Files in ZFS can take up to around the next
438 * recordsize boundary after being truncated. recordsize
439 * is reported in statvfs by f_bsize, so use that
442 afs_fsfragsize = st.f_bsize - 1;
444 afs_fsfragsize = st.f_frsize - 1;
447 afs_fsfragsize = st.f_bsize - 1;
448 # endif /* AFS_SUN5_ENV || AFS_HPUX100_ENV */
450 # if defined(AFS_XBSD_ENV)
451 cacheInode.ufs = VTOI(filevp)->i_number;
452 cacheDev.mp = filevp->v_mount;
453 cacheDev.held_vnode = filevp;
454 vref(filevp); /* Make sure mount point stays busy. XXX */
455 # if !defined(AFS_OBSD_ENV)
456 afs_cacheVfsp = filevp->v_vfsp;
459 # if defined(AFS_HAVE_VXFS) || defined(AFS_DARWIN_ENV)
460 afs_InitDualFSCacheOps(filevp);
462 # ifndef AFS_CACHE_VNODE_PATH
463 # ifndef AFS_DARWIN80_ENV
464 afs_cacheVfsp = filevp->v_vfsp;
466 cacheInode.ufs = afs_vnodeToInumber(filevp);
468 afs_LookupInodeByPath(afile, &cacheInode.ufs, NULL);
469 # endif /* !AFS_CACHE_VNODE_PATH */
470 cacheDev.dev = afs_vnodeToDev(filevp);
471 # endif /* AFS_XBSD_ENV */
473 #endif /* AFS_LINUX_ENV */
474 if (afs_fsfragsize < AFS_MIN_FRAGSIZE) {
475 afs_fsfragsize = AFS_MIN_FRAGSIZE;
477 tfile = osi_UFSOpen(&cacheInode);
481 afs_osi_Stat(tfile, &tstat);
482 cacheInfoModTime = tstat.mtime;
483 code = afs_osi_Read(tfile, -1, &theader, sizeof(theader));
485 if (code == sizeof(theader)) {
486 /* read the header correctly */
487 if (theader.magic == AFS_FHMAGIC
488 && theader.firstCSize == AFS_FIRSTCSIZE
489 && theader.otherCSize == AFS_OTHERCSIZE
490 && theader.dataSize == sizeof(struct fcache)
491 && theader.version == AFS_CI_VERSION)
495 /* write out a good file label */
496 afs_InitFHeader(&theader);
497 afs_osi_Write(tfile, 0, &theader, sizeof(theader));
499 * Truncate the rest of the file, since it may be arbitrarily
502 osi_UFSTruncate(tfile, sizeof(struct afs_fheader));
504 /* Leave the file open now, since reopening the file makes public pool
505 * vnode systems (like OSF/Alpha) much harder to handle, That's because
506 * they can do a vnode recycle operation any time we open a file, which
507 * we'd do on any afs_GetDSlot call, etc.
509 afs_cacheInodep = (struct osi_file *)tfile;
513 int afs_resourceinit_flag = 0;
515 afs_ResourceInit(int preallocs)
518 static struct rx_securityClass *secobj;
520 AFS_STATCNT(afs_ResourceInit);
521 AFS_RWLOCK_INIT(&afs_xuser, "afs_xuser");
522 AFS_RWLOCK_INIT(&afs_xvolume, "afs_xvolume");
523 AFS_RWLOCK_INIT(&afs_xserver, "afs_xserver");
524 AFS_RWLOCK_INIT(&afs_xsrvAddr, "afs_xsrvAddr");
525 AFS_RWLOCK_INIT(&afs_icl_lock, "afs_icl_lock");
526 AFS_RWLOCK_INIT(&afs_xinterface, "afs_xinterface");
527 LOCK_INIT(&afs_puttofileLock, "afs_puttofileLock");
528 #ifndef AFS_PRIVATE_OSI_ALLOCSPACES
529 LOCK_INIT(&osi_fsplock, "osi_fsplock");
530 LOCK_INIT(&osi_flplock, "osi_flplock");
532 AFS_RWLOCK_INIT(&afs_xconn, "afs_xconn");
535 afs_InitCBQueue(1); /* initialize callback queues */
537 if (afs_resourceinit_flag == 0) {
538 afs_resourceinit_flag = 1;
539 for (i = 0; i < NFENTRIES; i++)
541 for (i = 0; i < MAXNUMSYSNAMES; i++) {
542 afs_sysnamelist[i] = afs_osi_Alloc(MAXSYSNAME);
543 osi_Assert(afs_sysnamelist[i] != NULL);
545 afs_sysname = afs_sysnamelist[0];
546 osi_Assert(strlcpy(afs_sysname, SYS_NAME, MAXSYSNAME) < MAXSYSNAME);
547 afs_sysnamecount = 1;
551 secobj = rxnull_NewServerSecurityObject();
553 rx_NewService(0, 1, "afs", &secobj, 1, RXAFSCB_ExecuteRequest);
555 rx_NewService(0, RX_STATS_SERVICE_ID, "rpcstats", &secobj, 1,
556 RXSTATS_ExecuteRequest);
560 afs_osi_Wakeup(&afs_server); /* wakeup anyone waiting for it */
563 } /*afs_ResourceInit */
565 #if defined(AFS_AIX_ENV) && !defined(AFS_AIX51_ENV)
568 * AIX dynamic sizeof(struct proc)
570 * AIX keeps its proc structures in an array. The size of struct proc
571 * varies from release to release of the OS. In order to maintain
572 * binary compatibility with releases later than what we build on, we
573 * need to determine the size of struct proc at run time.
575 * We need this in order to walk the proc[] array to do PAG garbage
578 * We also need this in order to support 'klog -setpag', since the
579 * kernel code needs to locate the proc structure for the parent process
580 * of the current process.
582 * To compute sizeof(struct proc), we need the addresses of two proc
583 * structures and their corresponding pids. Given the pids, we can use
584 * the PROCMASK() macro to compute their corresponding indices in the
585 * proc[] array. By dividing the distance between the pointers by the
586 * number of proc structures, we can compute the size of a single proc
589 * We know the base address of the proc table from v.vb_proc:
591 * <sys/sysconfig.h> declares sysconfig() and SYS_GETPARMS;
592 * (we don't use this, but I note it here for completeness)
594 * <sys/var.h> declares struct var and external variable v;
598 * v.ve_proc &proc[x] (current highwater mark for
599 * proc[] array usage)
601 * The first proc pointer is v.vb_proc, which is the proc structure for
602 * process 0. Process 0's pointer to its first child is the other proc
603 * pointer. If process 0 has no children, we simply give up and do not
604 * support features that require knowing the size of struct proc.
608 afs_procsize_init(void)
610 afs_proc_t *p0; /* pointer to process 0 */
611 afs_proc_t *pN; /* pointer to process 0's first child */
612 # ifdef AFS_AIX51_ENV
619 p0 = (afs_proc_t *)v.vb_proc;
621 afs_gcpags = AFS_GCPAGS_EPROC0;
624 # ifdef AFS_AIX51_ENV
634 # endif /* AFS_AIX51_ENV */
636 afs_gcpags = AFS_GCPAGS_EPROCN;
640 if (pN->p_pid == p0->p_pid) {
641 afs_gcpags = AFS_GCPAGS_EEQPID;
645 pN_index = PROCMASK(pN->p_pid);
646 pN_offset = ((char *)pN - (char *)p0);
647 procsize = pN_offset / pN_index;
650 * check that the computation was exact
653 if (pN_index * procsize != pN_offset) {
654 afs_gcpags = AFS_GCPAGS_EINEXACT;
659 * check that the proc table size is a multiple of procsize.
662 if ((((char *)v.ve_proc - (char *)v.vb_proc) % procsize) != 0) {
663 afs_gcpags = AFS_GCPAGS_EPROCEND;
669 afs_gcpags_procsize = procsize;
671 #endif /* AFS_AIX_ENV && !AFS_AIX51_ENV */
677 * Clean up and shut down the AFS cache.
683 * Nothing interesting.
688 AFS_STATCNT(shutdown_cache);
689 osi_Assert(afs_WriteThroughDSlots() == 0);
690 if (1/*afs_cold_shutdown*/) {
691 afs_cacheinit_flag = 0;
696 afs_cacheFiles = afs_cacheBlocks = 0;
699 #if defined(AFS_XBSD_ENV)
701 struct vnode *volumeVnode_free = volumeVnode;
702 struct vnode *cacheDev_free = cacheDev.held_vnode;
704 cacheDev.held_vnode = NULL;
707 /* memcache never sets these, so they may be NULL. */
708 if (volumeVnode_free != NULL) {
709 vrele(volumeVnode_free); /* let it go, finally. */
711 if (cacheDev_free != NULL) {
712 vrele(cacheDev_free);
716 #endif /* AFS_XBSD_ENV */
717 #ifdef AFS_CACHE_VNODE_PATH
718 if (cacheDiskType != AFS_FCACHE_TYPE_MEM) {
719 afs_osi_FreeStr(cacheInode.ufs);
720 afs_osi_FreeStr(volumeInode.ufs);
722 #endif /* AFS_CACHE_VODE_PATH */
723 afs_reset_inode(&cacheInode);
724 afs_reset_inode(&volumeInode);
725 cacheInfoModTime = 0;
727 afs_fsfragsize = 1023;
728 memset(&cacheDev, 0, sizeof(struct osi_dev));
731 #if defined(AFS_LINUX_ENV) && defined(STRUCT_TASK_STRUCT_HAS_CRED)
732 put_cred(cache_creds);
734 } /*shutdown_cache */
738 shutdown_vnodeops(void)
740 AFS_STATCNT(shutdown_vnodeops);
741 if (afs_cold_shutdown) {
742 #ifndef AFS_LINUX_ENV
751 shutdown_server(void)
756 for (i = 0; i < NSERVERS; i++) {
757 struct server *ts, *next;
762 for (sa = ts->addr; sa; sa = sa->next_sa) {
764 /* afs_ReleaseConns has been updated to
765 * defer rx_DestroyConnection to Rx
766 * shutdown, as most recently was done
768 afs_ReleaseConns(sa->conns);
771 afs_osi_Free(ts, sizeof(struct server));
776 for (i = 0; i < NSERVERS; i++) {
777 struct srvAddr *sa, *next;
779 sa = afs_srvAddrs[i];
782 afs_osi_Free(sa, sizeof(struct srvAddr));
789 shutdown_volume(void)
794 for (i = 0; i < NVOLS; i++) {
795 for (tv = afs_volumes[i]; tv; tv = tv->next) {
797 afs_osi_Free(tv->name, strlen(tv->name) + 1);
810 AFS_STATCNT(shutdown_AFS);
812 afs_resourceinit_flag = 0;
817 * Free FreeVolList allocations
819 afs_osi_Free(Initialafs_freeVolList,
820 afs_memvolumes * sizeof(struct volume));
821 afs_freeVolList = Initialafs_freeVolList = NULL;
823 /* XXX HACK for MEM systems XXX
825 * For -memcache cache managers when we run out of free in memory volumes
826 * we simply malloc more; we won't be able to free those additional volumes.
830 * Free Users table allocation
833 struct unixuser *tu, *ntu;
834 for (i = 0; i < NUSERS; i++) {
835 for (tu = afs_users[i]; tu; tu = ntu) {
838 afs_FreeTokens(&tu->tokens);
840 EXP_RELE(tu->exporter);
841 afs_osi_Free(tu, sizeof(struct unixuser));
847 for (i = 0; i < NFENTRIES; i++)
849 /* Reinitialize local globals to defaults */
850 for (i = 0; i < MAXNUMSYSNAMES; i++) {
851 afs_osi_Free(afs_sysnamelist[i], MAXSYSNAME);
852 afs_sysnamelist[i] = NULL;
855 afs_sysnamecount = 0;
858 afs_waitForever = afs_waitForeverCount = 0;
862 if (afs_cold_shutdown) {
863 AFS_RWLOCK_INIT(&afs_xconn, "afs_xconn");
864 memset(&afs_rootFid, 0, sizeof(struct VenusFid));
865 AFS_RWLOCK_INIT(&afs_xuser, "afs_xuser");
866 AFS_RWLOCK_INIT(&afs_xvolume, "afs_xvolume");
867 AFS_RWLOCK_INIT(&afs_xserver, "afs_xserver");
868 LOCK_INIT(&afs_puttofileLock, "afs_puttofileLock");