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Import Upstream version 1.8.5
[hcoop/debian/openafs.git] / src / afsd / afsd.c
1 /*
2 * Copyright 2000, International Business Machines Corporation and others.
3 * All Rights Reserved.
4 *
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
8 */
9
10 /*
11 * Information Technology Center
12 * October 1987
13 *
14 * Description:
15 * The Andrew File System startup process. It is responsible for
16 * reading and parsing the various configuration files, starting up
17 * the kernel processes required by AFS and feeding the configuration
18 * information to the kernel.
19 *
20 * Recognized flags are:
21 * -blocks The number of blocks available in the workstation cache.
22 * -files The target number of files in the workstation cache (Default:
23 * 1000).
24 * -rootvol The name of the root volume to use.
25 * -stat The number of stat cache entries.
26 * -hosts [OBSOLETE] List of servers to check for volume location info FOR THE
27 * HOME CELL.
28 * -memcache Use an in-memory cache rather than disk.
29 * -cachedir The base directory for the workstation cache.
30 * -mountdir The directory on which the AFS is to be mounted.
31 * -confdir The configuration directory.
32 * -nosettime Don't keep checking the time to avoid drift (default).
33 * -settime [IGNORED] Keep checking the time to avoid drift.
34 * -rxmaxmtu Set the max mtu to help with VPN issues.
35 * -verbose Be chatty.
36 * -disable-dynamic-vcaches Disable the use of -stat value as the starting size of
37 * the size of the vcache/stat cache pool,
38 * but increase that pool dynamically as needed.
39 * -debug Print out additional debugging info.
40 * -kerndev [OBSOLETE] The kernel device for AFS.
41 * -dontfork [OBSOLETE] Don't fork off as a new process.
42 * -daemons The number of background daemons to start (Default: 2).
43 * -rmtsys Also fires up an afs remote sys call (e.g. pioctl, setpag)
44 * support daemon
45 * -chunksize [n] 2^n is the chunksize to be used. 0 is default.
46 * -dcache The number of data cache entries.
47 * -volumes The number of volume entries.
48 * -biods Number of bkg I/O daemons (AIX3.1 only)
49 * -prealloc Number of preallocated "small" memory blocks
50 * -logfile [IGNORED] Place where to put the logfile (default in
51 * <cache>/etc/AFSLog.
52 * -waitclose make close calls always synchronous (slows em down, tho)
53 * -files_per_subdir [n] number of files per cache subdir. (def=2048)
54 * -shutdown Shutdown afs daemons
55 * -enable_peer_stats Collect RPC statistics by peer.
56 * -enable_process_stats Collect RPC statistics for this process.
57 * -mem_alloc_sleep [IGNORED] Sleep when allocating memory.
58 * -afsdb Enable AFSDB support.
59 * -dynroot Enable dynroot support.
60 * -dynroot-sparse Enable dynroot support with minimal cell list.
61 * -fakestat Enable fake stat() for cross-cell mounts.
62 * -fakestat-all Enable fake stat() for all mounts.
63 * -nomount Do not mount /afs.
64 * -backuptree Prefer backup volumes for mountpoints in backup volumes.
65 * -rxbind Bind the rx socket.
66 * -rxpck Value for rx_extraPackets.
67 * -splitcache RW/RO ratio for cache.
68 * -rxmaxfrags Max number of UDP fragments per rx packet.
69 * -inumcalc inode number calculation method; 0=compat, 1=MD5 digest
70 * -volume-ttl vldb cache timeout in seconds
71 *---------------------------------------------------------------------------*/
72
73 #include <afsconfig.h>
74 #include <afs/param.h>
75 /* darwin dirent.h doesn't give us the prototypes we want if KERNEL is
76 * defined, and roken includes dirent */
77 #if defined(UKERNEL) && defined(AFS_USR_DARWIN_ENV)
78 # undef KERNEL
79 # include <roken.h>
80 # define KERNEL
81 #else
82 # include <roken.h>
83 #endif
84
85 #define VFS 1
86
87 #include <afs/stds.h>
88 #include <afs/opr.h>
89 #include <afs/opr_assert.h>
90
91 #include <afs/cmd.h>
92
93 #include "afsd.h"
94
95 #include <afs/afsutil.h>
96
97 #include <sys/file.h>
98 #include <sys/wait.h>
99 #include <hcrypto/rand.h>
100
101 /* darwin dirent.h doesn't give us the prototypes we want if KERNEL is
102 * defined */
103 #if defined(UKERNEL) && defined(AFS_USR_DARWIN_ENV)
104 # undef KERNEL
105 # include <dirent.h>
106 # define KERNEL
107 #else
108 # include <dirent.h>
109 #endif
110
111 #ifdef HAVE_SYS_FS_TYPES_H
112 #include <sys/fs_types.h>
113 #endif
114
115 #if defined(HAVE_SYS_MOUNT_H) && !defined(AFS_ARM_DARWIN_ENV)
116 #include <sys/mount.h>
117 #endif
118
119 #ifdef HAVE_SYS_FCNTL_H
120 #include <sys/fcntl.h>
121 #endif
122
123 #ifdef HAVE_SYS_MNTTAB_H
124 #include <sys/mnttab.h>
125 #endif
126
127 #ifdef HAVE_SYS_MNTENT_H
128 #include <sys/mntent.h>
129 #endif
130
131 #ifdef HAVE_MNTENT_H
132 #include <mntent.h>
133 #endif
134
135 #ifdef HAVE_SYS_VFS_H
136 #include <sys/vfs.h>
137 #endif
138
139 #ifdef HAVE_SYS_FSTYP_H
140 #include <sys/fstyp.h>
141 #endif
142
143 #include <ctype.h>
144
145 #include <afs/afs_args.h>
146 #include <afs/cellconfig.h>
147 #include <afs/afssyscalls.h>
148 #include <afs/afsutil.h>
149 #include <afs/sys_prototypes.h>
150
151 #if defined(AFS_SGI62_ENV) && !defined(AFS_SGI65_ENV)
152 #include <sym.h>
153 #include <symconst.h>
154 #endif
155 #ifdef AFS_SGI65_ENV
156 #include <sched.h>
157 #endif
158
159 #ifdef AFS_DARWIN_ENV
160 #ifdef AFS_DARWIN80_ENV
161 #include <sys/xattr.h>
162 #endif
163 #include <CoreFoundation/CoreFoundation.h>
164
165 static int event_pid;
166 #ifndef AFS_ARM_DARWIN_ENV
167 #define MACOS_EVENT_HANDLING 1
168 #endif
169 #endif /* AFS_DARWIN_ENV */
170
171 #if AFS_HAVE_STATVFS || defined(HAVE_SYS_STATVFS_H)
172 #include <sys/statvfs.h>
173 #else
174 #if defined(AFS_SUN_ENV)
175 #include <sys/vfs.h>
176 #else
177 #ifdef HAVE_SYS_STATFS_H
178 #include <sys/statfs.h>
179 #endif
180 #endif
181 #endif
182
183 #undef VIRTUE
184 #undef VICE
185
186
187 #define CACHEINFOFILE "cacheinfo"
188 #define DCACHEFILE "CacheItems"
189 #define VOLINFOFILE "VolumeItems"
190 #define CELLINFOFILE "CellItems"
191
192 #define MAXIPADDRS 1024
193
194 char LclCellName[64];
195
196 #define MAX_CACHE_LOOPS 4
197
198
199 /*
200 * Internet address (old style... should be updated). This was pulled out of the old 4.2
201 * version of <netinet/in.h>, since it's still useful.
202 */
203 struct in_addr_42 {
204 union {
205 struct {
206 u_char s_b1, s_b2, s_b3, s_b4;
207 } S_un_b;
208 struct {
209 u_short s_w1, s_w2;
210 } S_un_w;
211 afs_uint32 S_addr;
212 } S_un;
213 };
214
215 #define mPrintIPAddr(ipaddr) printf("[%d.%d.%d.%d] ", \
216 ((struct in_addr_42 *) &(ipaddr))->S_un.S_un_b.s_b1, \
217 ((struct in_addr_42 *) &(ipaddr))->S_un.S_un_b.s_b2, \
218 ((struct in_addr_42 *) &(ipaddr))->S_un.S_un_b.s_b3, \
219 ((struct in_addr_42 *) &(ipaddr))->S_un.S_un_b.s_b4)
220
221 /*
222 * Global configuration variables.
223 */
224 static int enable_rxbind = 0;
225 static int afs_shutdown = 0;
226 static int cacheBlocks; /*Num blocks in the cache */
227 static int cacheFiles; /*Optimal # of files in workstation cache */
228 static int rwpct = 0;
229 static int ropct = 0;
230 static int cacheStatEntries; /*Number of stat cache entries */
231 static char *cacheBaseDir; /*Where the workstation AFS cache lives */
232 static char *confDir; /*Where the workstation AFS configuration lives */
233 static char fullpn_DCacheFile[1024]; /*Full pathname of DCACHEFILE */
234 static char fullpn_VolInfoFile[1024]; /*Full pathname of VOLINFOFILE */
235 static char fullpn_CellInfoFile[1024]; /*Full pathanem of CELLINFOFILE */
236 static char fullpn_CacheInfo[1024]; /*Full pathname of CACHEINFO */
237 static char fullpn_VFile[1024]; /*Full pathname of data cache files */
238 static char *vFilePtr; /*Ptr to the number part of above pathname */
239 static int sawCacheMountDir = 0; /* from cmd line */
240 static int sawCacheBaseDir = 0;
241 static int sawCacheBlocks = 0;
242 static int sawDCacheSize = 0;
243 #ifdef AFS_AIX32_ENV
244 static int sawBiod = 0;
245 #endif
246 static int sawCacheStatEntries = 0;
247 char *afsd_cacheMountDir;
248 static char *rootVolume = NULL;
249 #ifdef AFS_XBSD_ENV
250 static int createAndTrunc = O_RDWR | O_CREAT | O_TRUNC; /*Create & truncate on open */
251 #else
252 static int createAndTrunc = O_CREAT | O_TRUNC; /*Create & truncate on open */
253 #endif
254 static int ownerRWmode = 0600; /*Read/write OK by owner */
255 static int filesSet = 0; /*True if number of files explicitly set */
256 static int nFilesPerDir = 2048; /* # files per cache dir */
257 #if defined(AFS_CACHE_BYPASS)
258 #define AFSD_NDAEMONS 4
259 #else
260 #define AFSD_NDAEMONS 2
261 #endif
262 static int nDaemons = AFSD_NDAEMONS; /* Number of background daemons */
263 static int chunkSize = 0; /* 2^chunkSize bytes per chunk */
264 static int dCacheSize; /* # of dcache entries */
265 static int vCacheSize = 200; /* # of volume cache entries */
266 static int rootVolSet = 0; /*True if root volume name explicitly set */
267 int addrNum; /*Cell server address index being printed */
268 static int cacheFlags = 0; /*Flags to cache manager */
269 #ifdef AFS_AIX32_ENV
270 static int nBiods = 5; /* AIX3.1 only */
271 #endif
272 static int preallocs = 400; /* Def # of allocated memory blocks */
273 static int enable_peer_stats = 0; /* enable rx stats */
274 static int enable_process_stats = 0; /* enable rx stats */
275 static int enable_afsdb = 0; /* enable AFSDB support */
276 static int enable_dynroot = 0; /* enable dynroot support */
277 static int enable_fakestat = 0; /* enable fakestat support */
278 static int enable_backuptree = 0; /* enable backup tree support */
279 static int enable_nomount = 0; /* do not mount */
280 static int enable_splitcache = 0;
281 static char *inumcalc = NULL; /* inode number calculation method */
282 static int afsd_dynamic_vcaches = 0; /* Enable dynamic-vcache support */
283 int afsd_verbose = 0; /*Are we being chatty? */
284 int afsd_debug = 0; /*Are we printing debugging info? */
285 static int afsd_CloseSynch = 0; /*Are closes synchronous or not? */
286 static int rxmaxmtu = 0; /* Are we forcing a limit on the mtu? */
287 static int rxmaxfrags = 0; /* Are we forcing a limit on frags? */
288 static int volume_ttl = 0; /* enable vldb cache timeout support */
289
290 #ifdef AFS_SGI62_ENV
291 #define AFSD_INO_T ino64_t
292 #else
293 #define AFSD_INO_T afs_uint32
294 #endif
295 struct afsd_file_list {
296 int fileNum;
297 struct afsd_file_list *next;
298 };
299 struct afsd_file_list **cache_dir_filelist = NULL;
300 int *cache_dir_list = NULL; /* Array of cache subdirs */
301 int *dir_for_V = NULL; /* Array: dir of each cache file.
302 * -1: file does not exist
303 * -2: file exists in top-level
304 * >=0: file exists in Dxxx
305 */
306 #if !defined(AFS_CACHE_VNODE_PATH) && !defined(AFS_LINUX26_ENV)
307 AFSD_INO_T *inode_for_V; /* Array of inodes for desired
308 * cache files */
309 #endif
310 int missing_DCacheFile = 1; /*Is the DCACHEFILE missing? */
311 int missing_VolInfoFile = 1; /*Is the VOLINFOFILE missing? */
312 int missing_CellInfoFile = 1; /*Is the CELLINFOFILE missing? */
313 int afsd_rmtsys = 0; /* Default: don't support rmtsys */
314 struct afs_cacheParams cparams; /* params passed to cache manager */
315
316 int PartSizeOverflow(char *path, int cs);
317
318 static int afsd_syscall(int code, ...);
319
320 #if defined(AFS_SUN510_ENV) && defined(RXK_LISTENER_ENV)
321 static void fork_rx_syscall_wait(const char *rn, int syscall, ...);
322 #endif
323 static void fork_rx_syscall(const char *rn, int syscall, ...);
324 static void fork_syscall(const char *rn, int syscall, ...);
325
326 enum optionsList {
327 OPT_blocks,
328 OPT_files,
329 OPT_rootvol,
330 OPT_stat,
331 OPT_memcache,
332 OPT_cachedir,
333 OPT_mountdir,
334 OPT_daemons,
335 OPT_nosettime,
336 OPT_verbose,
337 OPT_rmtsys,
338 OPT_debug,
339 OPT_chunksize,
340 OPT_dcache,
341 OPT_volumes,
342 OPT_biods,
343 OPT_prealloc,
344 OPT_confdir,
345 OPT_logfile,
346 OPT_waitclose,
347 OPT_shutdown,
348 OPT_peerstats,
349 OPT_processstats,
350 OPT_memallocsleep,
351 OPT_afsdb,
352 OPT_filesdir,
353 OPT_dynroot,
354 OPT_fakestat,
355 OPT_fakestatall,
356 OPT_nomount,
357 OPT_backuptree,
358 OPT_rxbind,
359 OPT_settime,
360 OPT_rxpck,
361 OPT_splitcache,
362 OPT_nodynvcache,
363 OPT_rxmaxmtu,
364 OPT_dynrootsparse,
365 OPT_rxmaxfrags,
366 OPT_inumcalc,
367 OPT_volume_ttl,
368 };
369
370 #ifdef MACOS_EVENT_HANDLING
371 #include <SystemConfiguration/SystemConfiguration.h>
372 #include <SystemConfiguration/SCDynamicStore.h>
373
374 #include <IOKit/pwr_mgt/IOPMLib.h>
375 #include <IOKit/IOMessage.h>
376
377 static io_connect_t root_port;
378 static IONotificationPortRef notify;
379 static io_object_t iterator;
380 static CFRunLoopSourceRef source;
381
382 static void
383 afsd_sleep_callback(void * refCon, io_service_t service,
384 natural_t messageType, void * messageArgument )
385 {
386 switch (messageType) {
387 case kIOMessageCanSystemSleep:
388 /* Idle sleep is about to kick in; can
389 prevent sleep by calling IOCancelPowerChange, otherwise
390 if we don't ack in 30s the system sleeps anyway */
391
392 /* allow it */
393 IOAllowPowerChange(root_port, (long)messageArgument);
394 break;
395
396 case kIOMessageSystemWillSleep:
397 /* The system WILL go to sleep. Ack or suffer delay */
398
399 IOAllowPowerChange(root_port, (long)messageArgument);
400 break;
401
402 case kIOMessageSystemWillRestart:
403 /* The system WILL restart. Ack or suffer delay */
404
405 IOAllowPowerChange(root_port, (long)messageArgument);
406 break;
407
408 case kIOMessageSystemWillPowerOn:
409 case kIOMessageSystemHasPoweredOn:
410 /* coming back from sleep */
411
412 IOAllowPowerChange(root_port, (long)messageArgument);
413 break;
414
415 default:
416 IOAllowPowerChange(root_port, (long)messageArgument);
417 break;
418 }
419 }
420
421 static void
422 afsd_update_addresses(CFRunLoopTimerRef timer, void *info)
423 {
424 /* parse multihomed address files */
425 afs_uint32 addrbuf[MAXIPADDRS], maskbuf[MAXIPADDRS],
426 mtubuf[MAXIPADDRS];
427 char reason[1024];
428 int code;
429
430 code = afsconf_ParseNetFiles(addrbuf, maskbuf, mtubuf, MAXIPADDRS,
431 reason, AFSDIR_CLIENT_NETINFO_FILEPATH,
432 AFSDIR_CLIENT_NETRESTRICT_FILEPATH);
433
434 if (code > 0) {
435 /* Note we're refreshing */
436 code = code | 0x40000000;
437 afsd_syscall(AFSOP_ADVISEADDR, code, addrbuf, maskbuf, mtubuf);
438 } else
439 printf("ADVISEADDR: Error in specifying interface addresses:%s\n",
440 reason);
441
442 /* Since it's likely this means our DNS server changed, reinit now */
443 if (enable_afsdb)
444 res_init();
445 }
446
447 /* This function is called when the system's ip addresses may have changed. */
448 static void
449 afsd_ipaddr_callback (SCDynamicStoreRef store, CFArrayRef changed_keys, void *info)
450 {
451 CFRunLoopTimerRef timer;
452
453 timer = CFRunLoopTimerCreate (NULL, CFAbsoluteTimeGetCurrent () + 1.0,
454 0.0, 0, 0, afsd_update_addresses, NULL);
455 CFRunLoopAddTimer (CFRunLoopGetCurrent (), timer,
456 kCFRunLoopDefaultMode);
457 CFRelease (timer);
458 }
459
460 static void
461 afsd_event_cleanup(int signo) {
462
463 CFRunLoopRemoveSource(CFRunLoopGetCurrent(), source, kCFRunLoopDefaultMode);
464 CFRelease (source);
465 IODeregisterForSystemPower(&iterator);
466 IOServiceClose(root_port);
467 IONotificationPortDestroy(notify);
468 exit(0);
469 }
470
471 /* Adapted from "Living in a Dynamic TCP/IP Environment" technote. */
472 static void
473 afsd_install_events(void)
474 {
475 SCDynamicStoreContext ctx = {0};
476 SCDynamicStoreRef store;
477
478 root_port = IORegisterForSystemPower(0,&notify,afsd_sleep_callback,&iterator);
479
480 if (root_port) {
481 CFRunLoopAddSource(CFRunLoopGetCurrent(),
482 IONotificationPortGetRunLoopSource(notify),
483 kCFRunLoopDefaultMode);
484 }
485
486
487 store = SCDynamicStoreCreate (NULL,
488 CFSTR ("AddIPAddressListChangeCallbackSCF"),
489 afsd_ipaddr_callback, &ctx);
490
491 if (store) {
492 const void *keys[1];
493
494 /* Request IPV4 address change notification */
495 keys[0] = (SCDynamicStoreKeyCreateNetworkServiceEntity
496 (NULL, kSCDynamicStoreDomainState,
497 kSCCompAnyRegex, kSCEntNetIPv4));
498
499 #if 0
500 /* This should tell us when the hostname(s) change. do we care? */
501 keys[N] = SCDynamicStoreKeyCreateHostNames (NULL);
502 #endif
503
504 if (keys[0] != NULL) {
505 CFArrayRef pattern_array;
506
507 pattern_array = CFArrayCreate (NULL, keys, 1,
508 &kCFTypeArrayCallBacks);
509
510 if (pattern_array != NULL)
511 {
512 SCDynamicStoreSetNotificationKeys (store, NULL, pattern_array);
513 source = SCDynamicStoreCreateRunLoopSource (NULL, store, 0);
514
515 CFRelease (pattern_array);
516 }
517
518 if (keys[0] != NULL)
519 CFRelease (keys[0]);
520 }
521
522 CFRelease (store);
523 }
524
525 if (source != NULL) {
526 CFRunLoopAddSource (CFRunLoopGetCurrent(),
527 source, kCFRunLoopDefaultMode);
528 }
529
530 signal(SIGTERM, afsd_event_cleanup);
531
532 CFRunLoopRun();
533 }
534 #endif
535
536 /* ParseArgs is now obsolete, being handled by cmd */
537
538 /*------------------------------------------------------------------------------
539 * ParseCacheInfoFile
540 *
541 * Description:
542 * Open the file containing the description of the workstation's AFS cache
543 * and pull out its contents. The format of this file is as follows:
544 *
545 * cacheMountDir:cacheBaseDir:cacheBlocks
546 *
547 * Arguments:
548 * None.
549 *
550 * Returns:
551 * 0 if everything went well,
552 * 1 otherwise.
553 *
554 * Environment:
555 * Nothing interesting.
556 *
557 * Side Effects:
558 * Sets globals.
559 *---------------------------------------------------------------------------*/
560
561 int
562 ParseCacheInfoFile(void)
563 {
564 static char rn[] = "ParseCacheInfoFile"; /*This routine's name */
565 FILE *cachefd; /*Descriptor for cache info file */
566 int parseResult; /*Result of our fscanf() */
567 int tCacheBlocks;
568 char tCacheBaseDir[1024], *tbd, tCacheMountDir[1024], *tmd;
569
570 if (afsd_debug)
571 printf("%s: Opening cache info file '%s'...\n", rn, fullpn_CacheInfo);
572
573 cachefd = fopen(fullpn_CacheInfo, "r");
574 if (!cachefd) {
575 printf("%s: Can't read cache info file '%s'\n", rn, fullpn_CacheInfo);
576 return (1);
577 }
578
579 /*
580 * Parse the contents of the cache info file. All chars up to the first
581 * colon are the AFS mount directory, all chars to the next colon are the
582 * full path name of the workstation cache directory and all remaining chars
583 * represent the number of blocks in the cache.
584 */
585 tCacheMountDir[0] = tCacheBaseDir[0] = '\0';
586 parseResult =
587 fscanf(cachefd, "%1024[^:]:%1024[^:]:%d", tCacheMountDir,
588 tCacheBaseDir, &tCacheBlocks);
589
590 /*
591 * Regardless of how the parse went, we close the cache info file.
592 */
593 fclose(cachefd);
594
595 if (parseResult == EOF || parseResult < 3) {
596 printf("%s: Format error in cache info file!\n", rn);
597 if (parseResult == EOF)
598 printf("\tEOF encountered before any field parsed.\n");
599 else
600 printf("\t%d out of 3 fields successfully parsed.\n",
601 parseResult);
602
603 return (1);
604 }
605
606 for (tmd = tCacheMountDir; *tmd == '\n' || *tmd == ' ' || *tmd == '\t';
607 tmd++);
608 for (tbd = tCacheBaseDir; *tbd == '\n' || *tbd == ' ' || *tbd == '\t';
609 tbd++);
610 /* now copy in the fields not explicitly overridden by cmd args */
611 if (!sawCacheMountDir)
612 afsd_cacheMountDir = strdup(tmd);
613 if (!sawCacheBaseDir)
614 cacheBaseDir = strdup(tbd);
615 if (!sawCacheBlocks)
616 cacheBlocks = tCacheBlocks;
617
618 if (afsd_debug) {
619 printf("%s: Cache info file successfully parsed:\n", rn);
620 printf
621 ("\tcacheMountDir: '%s'\n\tcacheBaseDir: '%s'\n\tcacheBlocks: %d\n",
622 tmd, tbd, tCacheBlocks);
623 }
624 if (!(cacheFlags & AFSCALL_INIT_MEMCACHE)) {
625 return (PartSizeOverflow(tbd, cacheBlocks));
626 }
627
628 return (0);
629 }
630
631 /*
632 * All failures to open the partition are ignored. Also if the cache dir
633 * isn't a mounted partition it's also ignored since we can't guarantee
634 * what will be stored afterwards. Too many if's. This is now purely
635 * advisory. ODS with over 2G partition also gives warning message.
636 *
637 * Returns:
638 * 0 if everything went well,
639 * 1 otherwise.
640 */
641 int
642 PartSizeOverflow(char *path, int cs)
643 {
644 int bsize = -1;
645 afs_int64 totalblks, mint;
646 #if AFS_HAVE_STATVFS || defined(HAVE_SYS_STATVFS_H)
647 struct statvfs statbuf;
648
649 if (statvfs(path, &statbuf) != 0) {
650 if (afsd_debug)
651 printf
652 ("statvfs failed on %s; skip checking for adequate partition space\n",
653 path);
654 return 0;
655 }
656 totalblks = statbuf.f_blocks;
657 bsize = statbuf.f_frsize;
658 #if AFS_AIX51_ENV
659 if (strcmp(statbuf.f_basetype, "jfs")) {
660 fprintf(stderr, "Cache filesystem '%s' must be jfs (now %s)\n",
661 path, statbuf.f_basetype);
662 return 1;
663 }
664 #endif /* AFS_AIX51_ENV */
665
666 #else /* AFS_HAVE_STATVFS */
667 struct statfs statbuf;
668
669 if (statfs(path, &statbuf) < 0) {
670 if (afsd_debug)
671 printf
672 ("statfs failed on %s; skip checking for adequate partition space\n",
673 path);
674 return 0;
675 }
676 totalblks = statbuf.f_blocks;
677 bsize = statbuf.f_bsize;
678 #endif
679 if (bsize == -1)
680 return 0; /* success */
681
682 /* now free and totalblks are in fragment units, but we want them in 1K units */
683 if (bsize >= 1024) {
684 totalblks *= (bsize / 1024);
685 } else {
686 totalblks /= (1024 / bsize);
687 }
688
689 mint = totalblks / 100 * 95;
690 if (cs > mint) {
691 printf
692 ("Cache size (%d) must be less than 95%% of partition size (which is %lld). Lower cache size\n",
693 cs, mint);
694 return 1;
695 }
696
697 return 0;
698 }
699
700 /*-----------------------------------------------------------------------------
701 * GetVFileNumber
702 *
703 * Description:
704 * Given the final component of a filename expected to be a data cache file,
705 * return the integer corresponding to the file. Note: we reject names that
706 * are not a ``V'' followed by an integer. We also reject those names having
707 * the right format but lying outside the range [0..cacheFiles-1].
708 *
709 * Arguments:
710 * fname : Char ptr to the filename to parse.
711 * max : integer for the highest number to accept
712 *
713 * Returns:
714 * >= 0 iff the file is really a data cache file numbered from 0 to cacheFiles-1, or
715 * -1 otherwise.
716 *
717 * Environment:
718 * Nothing interesting.
719 *
720 * Side Effects:
721 * None.
722 *---------------------------------------------------------------------------*/
723
724 static int
725 doGetXFileNumber(char *fname, char filechar, int maxNum)
726 {
727 int computedVNumber; /*The computed file number we return */
728 int filenameLen; /*Number of chars in filename */
729 int currDigit; /*Current digit being processed */
730
731 /*
732 * The filename must have at least two characters, the first of which must be a ``filechar''
733 * and the second of which cannot be a zero unless the file is exactly two chars long.
734 */
735 filenameLen = strlen(fname);
736 if (filenameLen < 2)
737 return (-1);
738 if (fname[0] != filechar)
739 return (-1);
740 if ((filenameLen > 2) && (fname[1] == '0'))
741 return (-1);
742
743 /*
744 * Scan through the characters in the given filename, failing immediately if a non-digit
745 * is found.
746 */
747 for (currDigit = 1; currDigit < filenameLen; currDigit++)
748 if (isdigit(fname[currDigit]) == 0)
749 return (-1);
750
751 /*
752 * All relevant characters are digits. Pull out the decimal number they represent.
753 * Reject it if it's out of range, otherwise return it.
754 */
755 computedVNumber = atoi(++fname);
756 if (computedVNumber < cacheFiles)
757 return (computedVNumber);
758 else
759 return (-1);
760 }
761
762 int
763 GetVFileNumber(char *fname, int maxFile)
764 {
765 return doGetXFileNumber(fname, 'V', maxFile);
766 }
767
768 int
769 GetDDirNumber(char *fname, int maxDir)
770 {
771 return doGetXFileNumber(fname, 'D', maxDir);
772 }
773
774
775 /*-----------------------------------------------------------------------------
776 * CreateCacheFile
777 *
778 * Description:
779 * Given a full pathname for a file we need to create for the workstation AFS
780 * cache, go ahead and create the file.
781 *
782 * Arguments:
783 * fname : Full pathname of file to create.
784 * statp : A pointer to a stat buffer which, if NON-NULL, will be
785 * filled by fstat()
786 *
787 * Returns:
788 * 0 iff the file was created,
789 * -1 otherwise.
790 *
791 * Environment:
792 * The given cache file has been found to be missing.
793 *
794 * Side Effects:
795 * As described.
796 *---------------------------------------------------------------------------*/
797
798 static int
799 CreateCacheSubDir(char *basename, int dirNum)
800 {
801 static char rn[] = "CreateCacheSubDir"; /* Routine Name */
802 char dir[1024];
803 int ret;
804
805 /* Build the new cache subdirectory */
806 sprintf(dir, "%s/D%d", basename, dirNum);
807
808 if (afsd_debug)
809 printf("%s: Creating cache subdir '%s'\n", rn, dir);
810
811 if ((ret = mkdir(dir, 0700)) != 0) {
812 printf("%s: Can't create '%s', error return is %d (%d)\n", rn, dir,
813 ret, errno);
814 if (errno != EEXIST)
815 return (-1);
816 }
817
818 /* Mark this directory as created */
819 cache_dir_list[dirNum] = 0;
820
821 /* And return success */
822 return (0);
823 }
824
825 static void
826 SetNoBackupAttr(char *fullpn)
827 {
828 #ifdef AFS_DARWIN80_ENV
829 int ret;
830
831 ret = setxattr(fullpn, "com.apple.metadata:com_apple_backup_excludeItem",
832 "com.apple.backupd", strlen("com.apple.backupd"), 0,
833 XATTR_CREATE);
834 if(ret < 0)
835 {
836 if(errno != EEXIST)
837 fprintf(stderr, "afsd: Warning: failed to set attribute to preclude cache backup: %s\n", strerror(errno));
838 }
839 #endif
840 return;
841 }
842
843 static int
844 MoveCacheFile(char *basename, int fromDir, int toDir, int cacheFile,
845 int maxDir)
846 {
847 static char rn[] = "MoveCacheFile";
848 char from[1024], to[1024];
849 int ret;
850
851 if (cache_dir_list[toDir] < 0
852 && (ret = CreateCacheSubDir(basename, toDir))) {
853 printf("%s: Can't create directory '%s/D%d'\n", rn, basename, toDir);
854 return ret;
855 }
856
857 /* Build the from,to dir */
858 if (fromDir < 0) {
859 /* old-style location */
860 snprintf(from, sizeof(from), "%s/V%d", basename, cacheFile);
861 } else {
862 snprintf(from, sizeof(from), "%s/D%d/V%d", basename, fromDir,
863 cacheFile);
864 }
865
866 snprintf(to, sizeof(from), "%s/D%d/V%d", basename, toDir, cacheFile);
867
868 if (afsd_verbose)
869 printf("%s: Moving cacheFile from '%s' to '%s'\n", rn, from, to);
870
871 if ((ret = rename(from, to)) != 0) {
872 printf("%s: Can't rename '%s' to '%s', error return is %d (%d)\n", rn,
873 from, to, ret, errno);
874 return -1;
875 }
876 SetNoBackupAttr(to);
877
878 /* Reset directory pointer; fix file counts */
879 dir_for_V[cacheFile] = toDir;
880 cache_dir_list[toDir]++;
881 if (fromDir < maxDir && fromDir >= 0)
882 cache_dir_list[fromDir]--;
883
884 return 0;
885 }
886
887 int
888 CreateCacheFile(char *fname, struct stat *statp)
889 {
890 static char rn[] = "CreateCacheFile"; /*Routine name */
891 int cfd; /*File descriptor to AFS cache file */
892 int closeResult; /*Result of close() */
893
894 if (afsd_debug)
895 printf("%s: Creating cache file '%s'\n", rn, fname);
896 cfd = open(fname, createAndTrunc, ownerRWmode);
897 if (cfd <= 0) {
898 printf("%s: Can't create '%s', error return is %d (%d)\n", rn, fname,
899 cfd, errno);
900 return (-1);
901 }
902 if (statp != NULL) {
903 closeResult = fstat(cfd, statp);
904 if (closeResult) {
905 printf
906 ("%s: Can't stat newly-created AFS cache file '%s' (code %d)\n",
907 rn, fname, errno);
908 return (-1);
909 }
910 }
911 closeResult = close(cfd);
912 if (closeResult) {
913 printf
914 ("%s: Can't close newly-created AFS cache file '%s' (code %d)\n",
915 rn, fname, errno);
916 return (-1);
917 }
918
919 return (0);
920 }
921
922 static void
923 CreateFileIfMissing(char *fullpn, int missing)
924 {
925 if (missing) {
926 if (CreateCacheFile(fullpn, NULL))
927 printf("CreateFileIfMissing: Can't create '%s'\n", fullpn);
928 }
929 }
930
931 static void
932 UnlinkUnwantedFile(char *rn, char *fullpn_FileToDelete, char *fileToDelete)
933 {
934 if (unlink(fullpn_FileToDelete)) {
935 if ((errno == EISDIR || errno == EPERM) && *fileToDelete == 'D') {
936 if (rmdir(fullpn_FileToDelete)) {
937 printf("%s: Can't rmdir '%s', errno is %d\n", rn,
938 fullpn_FileToDelete, errno);
939 }
940 } else
941 printf("%s: Can't unlink '%s', errno is %d\n", rn,
942 fullpn_FileToDelete, errno);
943 }
944 }
945
946 /*-----------------------------------------------------------------------------
947 * SweepAFSCache
948 *
949 * Description:
950 * Sweep through the AFS cache directory, recording the inode number for
951 * each valid data cache file there. Also, delete any file that doesn't belong
952 * in the cache directory during this sweep, and remember which of the other
953 * residents of this directory were seen. After the sweep, we create any data
954 * cache files that were missing.
955 *
956 * Arguments:
957 * vFilesFound : Set to the number of data cache files found.
958 *
959 * Returns:
960 * 0 if everything went well,
961 * -1 otherwise.
962 *
963 * Environment:
964 * This routine may be called several times. If the number of data cache files
965 * found is less than the global cacheFiles, then the caller will need to call it
966 * again to record the inodes of the missing zero-length data cache files created
967 * in the previous call.
968 *
969 * Side Effects:
970 * Fills up the global inode_for_V array, may create and/or delete files as
971 * explained above.
972 *---------------------------------------------------------------------------*/
973
974
975 static int
976 doSweepAFSCache(int *vFilesFound,
977 char *directory, /* /path/to/cache/directory */
978 int dirNum, /* current directory number */
979 int maxDir) /* maximum directory number */
980 {
981 static char rn[] = "doSweepAFSCache"; /* Routine Name */
982 char fullpn_FileToDelete[1024]; /*File to be deleted from cache */
983 char *fileToDelete; /*Ptr to last component of above */
984 DIR *cdirp; /*Ptr to cache directory structure */
985 #ifdef AFS_SGI62_ENV
986 struct dirent64 *currp; /*Current directory entry */
987 #else
988 struct dirent *currp; /*Current directory entry */
989 #endif
990 int vFileNum; /*Data cache file's associated number */
991 int thisDir; /* A directory number */
992 int highDir = 0;
993
994 if (afsd_debug)
995 printf("%s: Opening cache directory '%s'\n", rn, directory);
996
997 if (chmod(directory, 0700)) { /* force it to be 700 */
998 printf("%s: Can't 'chmod 0700' the cache dir, '%s'.\n", rn,
999 directory);
1000 return (-1);
1001 }
1002 cdirp = opendir(directory);
1003 if (cdirp == (DIR *) 0) {
1004 printf("%s: Can't open AFS cache directory, '%s'.\n", rn, directory);
1005 return (-1);
1006 }
1007
1008 /*
1009 * Scan the directory entries, remembering data cache file inodes
1010 * and the existance of other important residents. Recurse into
1011 * the data subdirectories.
1012 *
1013 * Delete all files and directories that don't belong here.
1014 */
1015 sprintf(fullpn_FileToDelete, "%s/", directory);
1016 fileToDelete = fullpn_FileToDelete + strlen(fullpn_FileToDelete);
1017
1018 #ifdef AFS_SGI62_ENV
1019 for (currp = readdir64(cdirp); currp; currp = readdir64(cdirp))
1020 #else
1021 for (currp = readdir(cdirp); currp; currp = readdir(cdirp))
1022 #endif
1023 {
1024 if (afsd_debug) {
1025 printf("%s: Current directory entry:\n", rn);
1026 #if defined(AFS_SGI62_ENV) || defined(AFS_DARWIN90_ENV)
1027 printf("\tinode=%" AFS_INT64_FMT ", reclen=%d, name='%s'\n", currp->d_ino,
1028 currp->d_reclen, currp->d_name);
1029 #elif defined(AFS_DFBSD_ENV) || defined(AFS_USR_DFBSD_ENV)
1030 printf("\tinode=%ld, name='%s'\n", (long)currp->d_ino, currp->d_name);
1031 #else
1032 printf("\tinode=%ld, reclen=%d, name='%s'\n", (long)currp->d_ino,
1033 currp->d_reclen, currp->d_name);
1034 #endif
1035 }
1036
1037 /*
1038 * If dirNum < 0, we are a top-level cache directory and should
1039 * only contain sub-directories and other sundry files. Therefore,
1040 * V-files are valid only if dirNum >= 0, and Directories are only
1041 * valid if dirNum < 0.
1042 */
1043
1044 if (*(currp->d_name) == 'V'
1045 && ((vFileNum = GetVFileNumber(currp->d_name, cacheFiles)) >=
1046 0)) {
1047 /*
1048 * Found a valid data cache filename. Remember this
1049 * file's inode, directory, and bump the number of files found
1050 * total and in this directory.
1051 */
1052 #if !defined(AFS_CACHE_VNODE_PATH) && !defined(AFS_LINUX26_ENV)
1053 inode_for_V[vFileNum] = currp->d_ino;
1054 #endif
1055 dir_for_V[vFileNum] = dirNum; /* remember this directory */
1056
1057 if (!maxDir) {
1058 /* If we're in a real subdir, mark this file to be moved
1059 * if we've already got too many files in this directory
1060 */
1061 assert(dirNum >= 0);
1062 cache_dir_list[dirNum]++; /* keep directory's file count */
1063 if (cache_dir_list[dirNum] > nFilesPerDir) {
1064 /* Too many files -- add to filelist */
1065 struct afsd_file_list *tmp = malloc(sizeof(*tmp));
1066 if (!tmp)
1067 printf
1068 ("%s: MALLOC FAILED allocating file_list entry\n",
1069 rn);
1070 else {
1071 tmp->fileNum = vFileNum;
1072 tmp->next = cache_dir_filelist[dirNum];
1073 cache_dir_filelist[dirNum] = tmp;
1074 }
1075 }
1076 }
1077 (*vFilesFound)++;
1078 } else if (dirNum < 0 && (*(currp->d_name) == 'D')
1079 && GetDDirNumber(currp->d_name, 1 << 30) >= 0) {
1080 int retval = 0;
1081 if ((vFileNum = GetDDirNumber(currp->d_name, maxDir)) >= 0) {
1082 /* Found a valid cachefile sub-Directory. Remember this number
1083 * and recurse into it. Note that subdirs cannot have subdirs.
1084 */
1085 retval = 1;
1086 } else if ((vFileNum = GetDDirNumber(currp->d_name, 1 << 30)) >=
1087 0) {
1088 /* This directory is going away, but figure out if there
1089 * are any cachefiles in here that should be saved by
1090 * moving them to other cache directories. This directory
1091 * will be removed later.
1092 */
1093 retval = 2;
1094 }
1095
1096 /* Save the highest directory number we've seen */
1097 if (vFileNum > highDir)
1098 highDir = vFileNum;
1099
1100 /* If this directory is staying, be sure to mark it as 'found' */
1101 if (retval == 1)
1102 cache_dir_list[vFileNum] = 0;
1103
1104 /* Print the dirname for recursion */
1105 sprintf(fileToDelete, "%s", currp->d_name);
1106
1107 /* Note: vFileNum is the directory number */
1108 retval =
1109 doSweepAFSCache(vFilesFound, fullpn_FileToDelete, vFileNum,
1110 (retval == 1 ? 0 : -1));
1111 if (retval) {
1112 printf("%s: Recursive sweep failed on directory %s\n", rn,
1113 currp->d_name);
1114 return retval;
1115 }
1116 } else if (dirNum < 0 && strcmp(currp->d_name, DCACHEFILE) == 0) {
1117 /*
1118 * Found the file holding the dcache entries.
1119 */
1120 missing_DCacheFile = 0;
1121 SetNoBackupAttr(fullpn_DCacheFile);
1122 } else if (dirNum < 0 && strcmp(currp->d_name, VOLINFOFILE) == 0) {
1123 /*
1124 * Found the file holding the volume info.
1125 */
1126 missing_VolInfoFile = 0;
1127 SetNoBackupAttr(fullpn_VolInfoFile);
1128 } else if (dirNum < 0 && strcmp(currp->d_name, CELLINFOFILE) == 0) {
1129 /*
1130 * Found the file holding the cell info.
1131 */
1132 missing_CellInfoFile = 0;
1133 SetNoBackupAttr(fullpn_CellInfoFile);
1134 } else if ((strcmp(currp->d_name, ".") == 0)
1135 || (strcmp(currp->d_name, "..") == 0) ||
1136 #ifdef AFS_DECOSF_ENV
1137 /* these are magic AdvFS files */
1138 (strcmp(currp->d_name, ".tags") == 0)
1139 || (strcmp(currp->d_name, "quota.user") == 0)
1140 || (strcmp(currp->d_name, "quota.group") == 0) ||
1141 #endif
1142 #ifdef AFS_LINUX22_ENV
1143 /* this is the ext3 journal file */
1144 (strcmp(currp->d_name, ".journal") == 0) ||
1145 #endif
1146 (strcmp(currp->d_name, "lost+found") == 0)) {
1147 /*
1148 * Don't do anything - this file is legit, and is to be left alone.
1149 */
1150 } else {
1151 /*
1152 * This file/directory doesn't belong in the cache. Nuke it.
1153 */
1154 sprintf(fileToDelete, "%s", currp->d_name);
1155 if (afsd_verbose)
1156 printf("%s: Deleting '%s'\n", rn, fullpn_FileToDelete);
1157 UnlinkUnwantedFile(rn, fullpn_FileToDelete, fileToDelete);
1158 }
1159 }
1160
1161 if (dirNum < 0) {
1162
1163 /*
1164 * Create all the cache files that are missing.
1165 */
1166 CreateFileIfMissing(fullpn_DCacheFile, missing_DCacheFile);
1167 CreateFileIfMissing(fullpn_VolInfoFile, missing_VolInfoFile);
1168 CreateFileIfMissing(fullpn_CellInfoFile, missing_CellInfoFile);
1169
1170 /* ADJUST CACHE FILES */
1171
1172 /* First, let's walk through the list of files and figure out
1173 * if there are any leftover files in extra directories or
1174 * missing files. Move the former and create the latter in
1175 * subdirs with extra space.
1176 */
1177
1178 thisDir = 0; /* Keep track of which subdir has space */
1179
1180 for (vFileNum = 0; vFileNum < cacheFiles; vFileNum++) {
1181 if (dir_for_V[vFileNum] == -1) {
1182 /* This file does not exist. Create it in the first
1183 * subdir that still has extra space.
1184 */
1185 while (thisDir < maxDir
1186 && cache_dir_list[thisDir] >= nFilesPerDir)
1187 thisDir++;
1188 if (thisDir >= maxDir)
1189 printf("%s: can't find directory to create V%d\n", rn,
1190 vFileNum);
1191 else {
1192 struct stat statb;
1193 #if !defined(AFS_CACHE_VNODE_PATH) && !defined(AFS_LINUX26_ENV)
1194 assert(inode_for_V[vFileNum] == (AFSD_INO_T) 0);
1195 #endif
1196 sprintf(vFilePtr, "D%d/V%d", thisDir, vFileNum);
1197 if (afsd_verbose)
1198 printf("%s: Creating '%s'\n", rn, fullpn_VFile);
1199 if (cache_dir_list[thisDir] < 0
1200 && CreateCacheSubDir(directory, thisDir))
1201 printf("%s: Can't create directory for '%s'\n", rn,
1202 fullpn_VFile);
1203 if (CreateCacheFile(fullpn_VFile, &statb))
1204 printf("%s: Can't create '%s'\n", rn, fullpn_VFile);
1205 else {
1206 #if !defined(AFS_CACHE_VNODE_PATH) && !defined(AFS_LINUX26_ENV)
1207 inode_for_V[vFileNum] = statb.st_ino;
1208 #endif
1209 dir_for_V[vFileNum] = thisDir;
1210 cache_dir_list[thisDir]++;
1211 (*vFilesFound)++;
1212 }
1213 SetNoBackupAttr(fullpn_VFile);
1214 }
1215
1216 } else if (dir_for_V[vFileNum] >= maxDir
1217 || dir_for_V[vFileNum] == -2) {
1218 /* This file needs to move; move it to the first subdir
1219 * that has extra space. (-2 means it's in the toplevel)
1220 */
1221 while (thisDir < maxDir
1222 && cache_dir_list[thisDir] >= nFilesPerDir)
1223 thisDir++;
1224 if (thisDir >= maxDir)
1225 printf("%s: can't find directory to move V%d\n", rn,
1226 vFileNum);
1227 else {
1228 if (MoveCacheFile
1229 (directory, dir_for_V[vFileNum], thisDir, vFileNum,
1230 maxDir)) {
1231 /* Cannot move. Ignore this file??? */
1232 /* XXX */
1233 }
1234 }
1235 }
1236 } /* for */
1237
1238 /* At this point, we've moved all of the valid cache files
1239 * into the valid subdirs, and created all the extra
1240 * cachefiles we need to create. Next, rebalance any subdirs
1241 * with too many cache files into the directories with not
1242 * enough cache files. Note that thisDir currently sits at
1243 * the lowest subdir that _may_ have room.
1244 */
1245
1246 for (dirNum = 0; dirNum < maxDir; dirNum++) {
1247 struct afsd_file_list *thisFile;
1248
1249 for (thisFile = cache_dir_filelist[dirNum];
1250 thisFile && cache_dir_list[dirNum] >= nFilesPerDir;
1251 thisFile = thisFile->next) {
1252 while (thisDir < maxDir
1253 && cache_dir_list[thisDir] >= nFilesPerDir)
1254 thisDir++;
1255 if (thisDir >= maxDir)
1256 printf("%s: can't find directory to move V%d\n", rn,
1257 vFileNum);
1258 else {
1259 if (MoveCacheFile
1260 (directory, dirNum, thisDir, thisFile->fileNum,
1261 maxDir)) {
1262 /* Cannot move. Ignore this file??? */
1263 /* XXX */
1264 }
1265 }
1266 } /* for each file to move */
1267 } /* for each directory */
1268
1269 /* Remove any directories >= maxDir -- they should be empty */
1270 for (; highDir >= maxDir; highDir--) {
1271 sprintf(fileToDelete, "D%d", highDir);
1272 UnlinkUnwantedFile(rn, fullpn_FileToDelete, fileToDelete);
1273 }
1274 }
1275
1276 /* dirNum < 0 */
1277 /*
1278 * Close the directory, return success.
1279 */
1280 if (afsd_debug)
1281 printf("%s: Closing cache directory.\n", rn);
1282 closedir(cdirp);
1283 return (0);
1284 }
1285
1286 char *
1287 CheckCacheBaseDir(char *dir)
1288 {
1289 struct stat statbuf;
1290
1291 if (!dir) {
1292 return "cache base dir not specified";
1293 }
1294 if (stat(dir, &statbuf) != 0) {
1295 return "unable to stat cache base directory";
1296 }
1297
1298 /* might want to check here for anything else goofy, like cache pointed at a non-dedicated directory, etc */
1299
1300 #ifdef AFS_LINUX24_ENV
1301 {
1302 int res;
1303 struct statfs statfsbuf;
1304
1305 res = statfs(dir, &statfsbuf);
1306 if (res != 0) {
1307 return "unable to statfs cache base directory";
1308 }
1309 #if !defined(AFS_LINUX26_ENV)
1310 if (statfsbuf.f_type == 0x52654973) { /* REISERFS_SUPER_MAGIC */
1311 return "cannot use reiserfs as cache partition";
1312 } else if (statfsbuf.f_type == 0x58465342) { /* XFS_SUPER_MAGIC */
1313 return "cannot use xfs as cache partition";
1314 } else if (statfsbuf.f_type == 0x01021994) { /* TMPFS_SUPER_MAGIC */
1315 return "cannot use tmpfs as cache partition";
1316 } else if (statfsbuf.f_type != 0xEF53) {
1317 return "must use ext2 or ext3 for cache partition";
1318 }
1319 #endif
1320 }
1321 #endif
1322
1323 #ifdef AFS_HPUX_ENV
1324 {
1325 int res;
1326 struct statfs statfsbuf;
1327 char name[FSTYPSZ];
1328
1329 res = statfs(dir, &statfsbuf);
1330 if (res != 0) {
1331 return "unable to statfs cache base directory";
1332 }
1333
1334 if (sysfs(GETFSTYP, statfsbuf.f_fsid[1], name) != 0) {
1335 return "unable to determine filesystem type for cache base dir";
1336 }
1337
1338 if (strcmp(name, "hfs")) {
1339 return "can only use hfs filesystem for cache partition on hpux";
1340 }
1341 }
1342 #endif
1343
1344 #ifdef AFS_SUN5_ENV
1345 {
1346 FILE *vfstab;
1347 struct mnttab mnt;
1348 struct stat statmnt, statci;
1349
1350 if ((stat(dir, &statci) == 0)
1351 && ((vfstab = fopen(MNTTAB, "r")) != NULL)) {
1352 while (getmntent(vfstab, &mnt) == 0) {
1353 if (strcmp(dir, mnt.mnt_mountp) != 0) {
1354 char *cp;
1355 int rdev = 0;
1356
1357 if (cp = hasmntopt(&mnt, "dev="))
1358 rdev =
1359 (int)strtol(cp + strlen("dev="), NULL,
1360 16);
1361
1362 if ((rdev == 0) && (stat(mnt.mnt_mountp, &statmnt) == 0))
1363 rdev = statmnt.st_dev;
1364
1365 if ((rdev == statci.st_dev)
1366 && (hasmntopt(&mnt, "logging") != NULL)) {
1367
1368 fclose(vfstab);
1369 return
1370 "mounting a multi-use partition which contains the AFS cache with the\n\"logging\" option may deadlock your system.\n\n";
1371 }
1372 }
1373 }
1374
1375 fclose(vfstab);
1376 }
1377 }
1378 #endif
1379
1380 return NULL;
1381 }
1382
1383 int
1384 SweepAFSCache(int *vFilesFound)
1385 {
1386 static char rn[] = "SweepAFSCache"; /*Routine name */
1387 int maxDir = (cacheFiles + nFilesPerDir - 1) / nFilesPerDir;
1388 int i;
1389
1390 *vFilesFound = 0;
1391
1392 if (cacheFlags & AFSCALL_INIT_MEMCACHE) {
1393 if (afsd_debug)
1394 printf("%s: Memory Cache, no cache sweep done\n", rn);
1395 return 0;
1396 }
1397
1398 if (cache_dir_list == NULL) {
1399 cache_dir_list = malloc(maxDir * sizeof(*cache_dir_list));
1400 if (cache_dir_list == NULL) {
1401 printf("%s: Malloc Failed!\n", rn);
1402 return (-1);
1403 }
1404 for (i = 0; i < maxDir; i++)
1405 cache_dir_list[i] = -1; /* Does not exist */
1406 }
1407
1408 if (cache_dir_filelist == NULL) {
1409 cache_dir_filelist = calloc(maxDir, sizeof(*cache_dir_filelist));
1410 if (cache_dir_filelist == NULL) {
1411 printf("%s: Malloc Failed!\n", rn);
1412 return (-1);
1413 }
1414 }
1415
1416 if (dir_for_V == NULL) {
1417 dir_for_V = malloc(cacheFiles * sizeof(*dir_for_V));
1418 if (dir_for_V == NULL) {
1419 printf("%s: Malloc Failed!\n", rn);
1420 return (-1);
1421 }
1422 for (i = 0; i < cacheFiles; i++)
1423 dir_for_V[i] = -1; /* Does not exist */
1424 }
1425
1426 /* Note, setting dirNum to -2 here will cause cachefiles found in
1427 * the toplevel directory to be marked in directory "-2". This
1428 * allows us to differentiate between 'file not seen' (-1) and
1429 * 'file seen in top-level' (-2). Then when we try to move the
1430 * file into a subdirectory, we know it's in the top-level instead
1431 * of some other cache subdir.
1432 */
1433 return doSweepAFSCache(vFilesFound, cacheBaseDir, -2, maxDir);
1434 }
1435
1436 static int
1437 ConfigCell(struct afsconf_cell *aci, void *arock, struct afsconf_dir *adir)
1438 {
1439 int isHomeCell;
1440 int i, code;
1441 int cellFlags = 0;
1442 afs_int32 hosts[MAXHOSTSPERCELL];
1443
1444 /* figure out if this is the home cell */
1445 isHomeCell = (strcmp(aci->name, LclCellName) == 0);
1446 if (!isHomeCell) {
1447 cellFlags = 2; /* not home, suid is forbidden */
1448 if (enable_dynroot == 2)
1449 cellFlags |= 8; /* don't display foreign cells until looked up */
1450 }
1451 /* build address list */
1452 for (i = 0; i < MAXHOSTSPERCELL; i++)
1453 memcpy(&hosts[i], &aci->hostAddr[i].sin_addr, sizeof(afs_int32));
1454
1455 if (aci->linkedCell)
1456 cellFlags |= 4; /* Flag that linkedCell arg exists,
1457 * for upwards compatibility */
1458
1459 /* configure one cell */
1460 code = afsd_syscall(AFSOP_ADDCELL2, hosts, /* server addresses */
1461 aci->name, /* cell name */
1462 cellFlags, /* is this the home cell? */
1463 aci->linkedCell); /* Linked cell, if any */
1464 if (code)
1465 printf("Adding cell '%s': error %d\n", aci->name, code);
1466 return 0;
1467 }
1468
1469 static int
1470 ConfigCellAlias(struct afsconf_cellalias *aca,
1471 void *arock, struct afsconf_dir *adir)
1472 {
1473 /* push the alias into the kernel */
1474 afsd_syscall(AFSOP_ADDCELLALIAS, aca->aliasName, aca->realName);
1475 return 0;
1476 }
1477
1478 static void
1479 AfsdbLookupHandler(void)
1480 {
1481 afs_int32 kernelMsg[64];
1482 char acellName[128];
1483 afs_int32 code;
1484 struct afsconf_cell acellInfo;
1485 int i;
1486
1487 kernelMsg[0] = 0;
1488 kernelMsg[1] = 0;
1489 acellName[0] = '\0';
1490
1491 #ifdef MACOS_EVENT_HANDLING
1492 /* Fork the event handler also. */
1493 code = fork();
1494 if (code == 0) {
1495 afsd_install_events();
1496 return;
1497 } else if (code != -1) {
1498 event_pid = code;
1499 }
1500 #endif
1501 while (1) {
1502 /* On some platforms you only get 4 args to an AFS call */
1503 int sizeArg = ((sizeof acellName) << 16) | (sizeof kernelMsg);
1504 code =
1505 afsd_syscall(AFSOP_AFSDB_HANDLER, acellName, kernelMsg, sizeArg);
1506 if (code) { /* Something is wrong? */
1507 sleep(1);
1508 continue;
1509 }
1510
1511 if (*acellName == 1) /* Shutting down */
1512 break;
1513
1514 code = afsconf_GetAfsdbInfo(acellName, 0, &acellInfo);
1515 if (code) {
1516 kernelMsg[0] = 0;
1517 kernelMsg[1] = 0;
1518 } else {
1519 kernelMsg[0] = acellInfo.numServers;
1520 if (acellInfo.timeout)
1521 kernelMsg[1] = acellInfo.timeout - time(0);
1522 else
1523 kernelMsg[1] = 0;
1524 for (i = 0; i < acellInfo.numServers; i++)
1525 kernelMsg[i + 2] = acellInfo.hostAddr[i].sin_addr.s_addr;
1526 strncpy(acellName, acellInfo.name, sizeof(acellName));
1527 acellName[sizeof(acellName) - 1] = '\0';
1528 }
1529 }
1530 #ifdef AFS_DARWIN_ENV
1531 kill(event_pid, SIGTERM);
1532 #endif
1533 }
1534
1535 #ifdef AFS_NEW_BKG
1536 static void
1537 BkgHandler(void)
1538 {
1539 afs_int32 code;
1540 struct afs_uspc_param *uspc;
1541 char srcName[256];
1542 char dstName[256];
1543
1544 uspc = calloc(1, sizeof(struct afs_uspc_param));
1545 memset(srcName, 0, sizeof(srcName));
1546 memset(dstName, 0, sizeof(dstName));
1547
1548 /* brscount starts at 0 */
1549 uspc->ts = -1;
1550
1551 while (1) {
1552 pid_t child = 0;
1553 int status;
1554 char srcpath[BUFSIZ];
1555 char dstpath[BUFSIZ];
1556
1557 /* pushing in a buffer this large */
1558 uspc->bufSz = 256;
1559
1560 code = afsd_syscall(AFSOP_BKG_HANDLER, uspc, srcName, dstName);
1561 if (code) { /* Something is wrong? */
1562 if (code == -2) /* shutting down */
1563 break;
1564
1565 sleep(1);
1566 uspc->retval = -1;
1567 continue;
1568 }
1569
1570 switch (uspc->reqtype) {
1571 case AFS_USPC_UMV:
1572 snprintf(srcpath, BUFSIZ, "/afs/.:mount/%d:%d:%d:%d/%s",
1573 uspc->req.umv.sCell, uspc->req.umv.sVolume,
1574 uspc->req.umv.sVnode, uspc->req.umv.sUnique, srcName);
1575 snprintf(dstpath, BUFSIZ, "/afs/.:mount/%d:%d:%d:%d/%s",
1576 uspc->req.umv.dCell, uspc->req.umv.dVolume,
1577 uspc->req.umv.dVnode, uspc->req.umv.dUnique, dstName);
1578 if ((child = fork()) == 0) {
1579 /* first child does cp; second, rm. mv would re-enter. */
1580
1581 switch (uspc->req.umv.idtype) {
1582 case IDTYPE_UID:
1583 if (setuid(uspc->req.umv.id) != 0) {
1584 exit(-1);
1585 }
1586 break;
1587 default:
1588 exit(-1);
1589 break; /* notreached */
1590 }
1591 execl("/bin/cp", "(afsd EXDEV helper)", "-PRp", "--", srcpath,
1592 dstpath, (char *) NULL);
1593 }
1594 if (child == (pid_t) -1) {
1595 uspc->retval = -1;
1596 continue;
1597 }
1598
1599 if (waitpid(child, &status, 0) == -1)
1600 uspc->retval = EIO;
1601 else if (WIFEXITED(status) != 0 && WEXITSTATUS(status) == 0) {
1602 if ((child = fork()) == 0) {
1603 switch (uspc->req.umv.idtype) {
1604 case IDTYPE_UID:
1605 if (setuid(uspc->req.umv.id) != 0) {
1606 exit(-1);
1607 }
1608 break;
1609 default:
1610 exit(-1);
1611 break; /* notreached */
1612 }
1613 execl("/bin/rm", "(afsd EXDEV helper)", "-rf", "--",
1614 srcpath, (char *) NULL);
1615 }
1616 if (child == (pid_t) -1) {
1617 uspc->retval = -1;
1618 continue;
1619 }
1620 if (waitpid(child, &status, 0) == -1)
1621 uspc->retval = EIO;
1622 else if (WIFEXITED(status) != 0) {
1623 /* rm exit status */
1624 uspc->retval = WEXITSTATUS(status);
1625 } else {
1626 /* rm signal status */
1627 uspc->retval = -(WTERMSIG(status));
1628 }
1629 } else {
1630 /* error from cp: exit or signal status */
1631 uspc->retval = (WIFEXITED(status) != 0) ?
1632 WEXITSTATUS(status) : -(WTERMSIG(status));
1633 }
1634 memset(srcName, 0, sizeof(srcName));
1635 memset(dstName, 0, sizeof(dstName));
1636 break;
1637
1638 default:
1639 /* unknown req type */
1640 uspc->retval = -1;
1641 break;
1642 }
1643 }
1644 }
1645 #endif
1646
1647 static void *
1648 afsdb_thread(void *rock)
1649 {
1650 /* Since the AFSDB lookup handler runs as a user process,
1651 * need to drop the controlling TTY, etc.
1652 */
1653 if (afsd_daemon(0, 0) == -1) {
1654 printf("Error starting AFSDB lookup handler: %s\n",
1655 strerror(errno));
1656 exit(1);
1657 }
1658 AfsdbLookupHandler();
1659 return NULL;
1660 }
1661
1662 static void *
1663 daemon_thread(void *rock)
1664 {
1665 #ifdef AFS_NEW_BKG
1666 /* Since the background daemon runs as a user process,
1667 * need to drop the controlling TTY, etc.
1668 */
1669 if (afsd_daemon(0, 0) == -1) {
1670 printf("Error starting background daemon: %s\n",
1671 strerror(errno));
1672 exit(1);
1673 }
1674 BkgHandler();
1675 #else
1676 afsd_syscall(AFSOP_START_BKG, 0);
1677 #endif
1678 return NULL;
1679 }
1680
1681 #ifndef UKERNEL
1682 static void *
1683 rmtsysd_thread(void *rock)
1684 {
1685 rmtsysd();
1686 return NULL;
1687 }
1688 #endif /* !UKERNEL */
1689
1690 /**
1691 * Check the command line and cacheinfo options.
1692 *
1693 * @param[in] as parsed command line arguments
1694 *
1695 * @note Invokes the shutdown syscall and exits with 0 when
1696 * -shutdown is given.
1697 */
1698 static int
1699 CheckOptions(struct cmd_syndesc *as)
1700 {
1701 afs_int32 code; /*Result of fork() */
1702 #ifdef AFS_SUN5_ENV
1703 struct stat st;
1704 #endif
1705 #ifdef AFS_SGI65_ENV
1706 struct sched_param sp;
1707 #endif
1708
1709 #ifdef AFS_SGI_VNODE_GLUE
1710 if (afs_init_kernel_config(-1) < 0) {
1711 printf("Can't determine NUMA configuration, not starting AFS.\n");
1712 exit(1);
1713 }
1714 #endif
1715
1716 cmd_OpenConfigFile(AFSDIR_CLIENT_CONFIG_FILE_FILEPATH);
1717 cmd_SetCommandName("afsd");
1718
1719 /* call atoi on the appropriate parsed results */
1720 if (cmd_OptionAsInt(as, OPT_blocks, &cacheBlocks) == 0)
1721 sawCacheBlocks = 1;
1722
1723 if (cmd_OptionAsInt(as, OPT_files, &cacheFiles) == 0)
1724 filesSet = 1;
1725
1726 if (cmd_OptionAsString(as, OPT_rootvol, &rootVolume) == 0)
1727 rootVolSet = 1;
1728
1729 if (cmd_OptionAsInt(as, OPT_stat, &cacheStatEntries) == 0)
1730 sawCacheStatEntries = 1;
1731
1732 if (cmd_OptionPresent(as, OPT_memcache)) {
1733 cacheBaseDir = NULL;
1734 sawCacheBaseDir = 1;
1735 cacheFlags |= AFSCALL_INIT_MEMCACHE;
1736 }
1737
1738 if (cmd_OptionAsString(as, OPT_cachedir, &cacheBaseDir) == 0)
1739 sawCacheBaseDir = 1;
1740
1741 if (cmd_OptionAsString(as, OPT_mountdir, &afsd_cacheMountDir) == 0)
1742 sawCacheMountDir = 1;
1743
1744 cmd_OptionAsInt(as, OPT_daemons, &nDaemons);
1745
1746 afsd_verbose = cmd_OptionPresent(as, OPT_verbose);
1747
1748 if (cmd_OptionPresent(as, OPT_rmtsys)) {
1749 afsd_rmtsys = 1;
1750 #ifdef UKERNEL
1751 printf("-rmtsys not supported for UKERNEL\n");
1752 return -1;
1753 #endif
1754 }
1755
1756 if (cmd_OptionPresent(as, OPT_debug)) {
1757 afsd_debug = 1;
1758 afsd_verbose = 1;
1759 }
1760
1761 if (cmd_OptionAsInt(as, OPT_chunksize, &chunkSize) == 0) {
1762 if (chunkSize < 0 || chunkSize > 30) {
1763 printf
1764 ("afsd:invalid chunk size (not in range 0-30), using default\n");
1765 chunkSize = 0;
1766 }
1767 }
1768
1769 if (cmd_OptionAsInt(as, OPT_dcache, &dCacheSize) == 0)
1770 sawDCacheSize = 1;
1771
1772 cmd_OptionAsInt(as, OPT_volumes, &vCacheSize);
1773
1774 if (cmd_OptionPresent(as, OPT_biods)) {
1775 /* -biods */
1776 #ifndef AFS_AIX32_ENV
1777 printf
1778 ("afsd: [-biods] currently only enabled for aix3.x VM supported systems\n");
1779 #else
1780 cmd_OptionAsInt(as, OPT_biods, &nBiods);
1781 #endif
1782 }
1783 cmd_OptionAsInt(as, OPT_prealloc, &preallocs);
1784
1785 if (cmd_OptionAsString(as, OPT_confdir, &confDir) == CMD_MISSING) {
1786 confDir = strdup(AFSDIR_CLIENT_ETC_DIRPATH);
1787 }
1788 sprintf(fullpn_CacheInfo, "%s/%s", confDir, CACHEINFOFILE);
1789
1790 if (cmd_OptionPresent(as, OPT_logfile)) {
1791 printf("afsd: Ignoring obsolete -logfile flag\n");
1792 }
1793
1794 afsd_CloseSynch = cmd_OptionPresent(as, OPT_waitclose);
1795
1796 if (cmd_OptionPresent(as, OPT_shutdown)) {
1797 /* -shutdown */
1798 afs_shutdown = 1;
1799 /*
1800 * Cold shutdown is the default
1801 */
1802 printf("afsd: Shutting down all afs processes and afs state\n");
1803 code = afsd_syscall(AFSOP_SHUTDOWN, 1);
1804 if (code) {
1805 printf("afsd: AFS still mounted; Not shutting down\n");
1806 exit(1);
1807 }
1808 exit(0);
1809 }
1810
1811 enable_peer_stats = cmd_OptionPresent(as, OPT_peerstats);
1812 enable_process_stats = cmd_OptionPresent(as, OPT_processstats);
1813
1814 if (cmd_OptionPresent(as, OPT_memallocsleep)) {
1815 printf("afsd: -mem_alloc_sleep is deprecated -- ignored\n");
1816 }
1817
1818 enable_afsdb = cmd_OptionPresent(as, OPT_afsdb);
1819 if (cmd_OptionPresent(as, OPT_filesdir)) {
1820 /* -files_per_subdir */
1821 int res;
1822 cmd_OptionAsInt(as, OPT_filesdir, &res);
1823 if (res < 10 || res > (1 << 30)) {
1824 printf
1825 ("afsd:invalid number of files per subdir, \"%s\". Ignored\n",
1826 as->parms[25].items->data);
1827 } else {
1828 nFilesPerDir = res;
1829 }
1830 }
1831 enable_dynroot = cmd_OptionPresent(as, OPT_dynroot);
1832
1833 if (cmd_OptionPresent(as, OPT_fakestat)) {
1834 enable_fakestat = 2;
1835 }
1836 if (cmd_OptionPresent(as, OPT_fakestatall)) {
1837 enable_fakestat = 1;
1838 }
1839 if (cmd_OptionPresent(as, OPT_settime)) {
1840 /* -settime */
1841 printf("afsd: -settime ignored\n");
1842 printf("afsd: the OpenAFS client no longer sets the system time; "
1843 "please use NTP or\n");
1844 printf("afsd: another such system to synchronize client time\n");
1845 }
1846
1847 enable_nomount = cmd_OptionPresent(as, OPT_nomount);
1848 enable_backuptree = cmd_OptionPresent(as, OPT_backuptree);
1849 enable_rxbind = cmd_OptionPresent(as, OPT_rxbind);
1850
1851 /* set rx_extraPackets */
1852 if (cmd_OptionPresent(as, OPT_rxpck)) {
1853 /* -rxpck */
1854 int rxpck;
1855 cmd_OptionAsInt(as, OPT_rxpck, &rxpck);
1856 printf("afsd: set rxpck = %d\n", rxpck);
1857 code = afsd_syscall(AFSOP_SET_RXPCK, rxpck);
1858 if (code) {
1859 printf("afsd: failed to set rxpck\n");
1860 exit(1);
1861 }
1862 }
1863 if (cmd_OptionPresent(as, OPT_splitcache)) {
1864 char *c;
1865 char *var = NULL;
1866
1867 cmd_OptionAsString(as, OPT_splitcache, &var);
1868
1869 if (var == NULL || ((c = strchr(var, '/')) == NULL))
1870 printf
1871 ("ignoring splitcache (specify as RW/RO percentages: 60/40)\n");
1872 else {
1873 ropct = atoi(c + 1);
1874 *c = '\0';
1875 rwpct = atoi(var);
1876 if ((rwpct != 0) && (ropct != 0) && (ropct + rwpct == 100)) {
1877 /* -splitcache */
1878 enable_splitcache = 1;
1879 }
1880 }
1881 free(var);
1882 }
1883 if (cmd_OptionPresent(as, OPT_nodynvcache)) {
1884 #ifdef AFS_MAXVCOUNT_ENV
1885 afsd_dynamic_vcaches = 0;
1886 #else
1887 printf("afsd: Error toggling flag, dynamically allocated vcaches not supported on your platform\n");
1888 exit(1);
1889 #endif
1890 }
1891 #ifdef AFS_MAXVCOUNT_ENV
1892 else {
1893 /* -dynamic-vcaches */
1894 afsd_dynamic_vcaches = 1;
1895 }
1896
1897 if (afsd_verbose)
1898 printf("afsd: %s dynamically allocated vcaches\n", ( afsd_dynamic_vcaches ? "enabling" : "disabling" ));
1899 #endif
1900
1901 cmd_OptionAsInt(as, OPT_rxmaxmtu, &rxmaxmtu);
1902
1903 if (cmd_OptionPresent(as, OPT_dynrootsparse)) {
1904 enable_dynroot = 2;
1905 }
1906
1907 cmd_OptionAsInt(as, OPT_rxmaxfrags, &rxmaxfrags);
1908 if (cmd_OptionPresent(as, OPT_inumcalc)) {
1909 cmd_OptionAsString(as, OPT_inumcalc, &inumcalc);
1910 }
1911 cmd_OptionAsInt(as, OPT_volume_ttl, &volume_ttl);
1912
1913 /* parse cacheinfo file if this is a diskcache */
1914 if (ParseCacheInfoFile()) {
1915 exit(1);
1916 }
1917
1918 return 0;
1919 }
1920
1921 int
1922 afsd_run(void)
1923 {
1924 static char rn[] = "afsd"; /*Name of this routine */
1925 struct afsconf_dir *cdir; /* config dir */
1926 int lookupResult; /*Result of GetLocalCellName() */
1927 int i;
1928 int code; /*Result of fork() */
1929 char *fsTypeMsg = NULL;
1930 int cacheIteration; /*How many times through cache verification */
1931 int vFilesFound; /*How many data cache files were found in sweep */
1932 int currVFile; /*Current AFS cache file number passed in */
1933
1934 /*
1935 * Pull out all the configuration info for the workstation's AFS cache and
1936 * the cellular community we're willing to let our users see.
1937 */
1938 cdir = afsconf_Open(confDir);
1939 if (!cdir) {
1940 printf("afsd: some file missing or bad in %s\n", confDir);
1941 exit(1);
1942 }
1943
1944 lookupResult =
1945 afsconf_GetLocalCell(cdir, LclCellName, sizeof(LclCellName));
1946 if (lookupResult) {
1947 printf("%s: Can't get my home cell name! [Error is %d]\n", rn,
1948 lookupResult);
1949 } else {
1950 if (afsd_verbose)
1951 printf("%s: My home cell is '%s'\n", rn, LclCellName);
1952 }
1953
1954 if (!enable_nomount) {
1955 if (afsd_check_mount(rn, afsd_cacheMountDir)) {
1956 return -1;
1957 }
1958 }
1959
1960 /* do some random computations in memcache case to get things to work
1961 * reasonably no matter which parameters you set.
1962 */
1963 if (cacheFlags & AFSCALL_INIT_MEMCACHE) {
1964 /* memory cache: size described either as blocks or dcache entries, but
1965 * not both.
1966 */
1967 if (filesSet) {
1968 fprintf(stderr, "%s: -files ignored with -memcache\n", rn);
1969 }
1970 if (sawDCacheSize) {
1971 if (chunkSize == 0) {
1972 chunkSize = 13; /* 8k default chunksize for memcache */
1973 }
1974 if (sawCacheBlocks) {
1975 printf
1976 ("%s: can't set cache blocks and dcache size simultaneously when diskless.\n",
1977 rn);
1978 exit(1);
1979 }
1980 /* compute the cache size based on # of chunks times the chunk size */
1981 i = (1 << chunkSize); /* bytes per chunk */
1982 cacheBlocks = i * dCacheSize;
1983 sawCacheBlocks = 1; /* so that ParseCacheInfoFile doesn't overwrite */
1984 } else {
1985 if (chunkSize == 0) {
1986 /* Try to autotune the memcache chunksize based on size
1987 * of memcache. This is done on the assumption that approx
1988 * 1024 chunks is suitable, it's a balance between enough
1989 * chunks to be useful and ramping up nicely when using larger
1990 * memcache to improve bulk read/write performance
1991 */
1992 for (i = 14;
1993 i <= 21 && (1 << i) / 1024 < (cacheBlocks / 1024); i++);
1994 chunkSize = i - 1;
1995 }
1996 /* compute the dcache size from overall cache size and chunk size */
1997 if (chunkSize > 10) {
1998 dCacheSize = (cacheBlocks >> (chunkSize - 10));
1999 } else if (chunkSize < 10) {
2000 dCacheSize = (cacheBlocks << (10 - chunkSize));
2001 } else {
2002 dCacheSize = cacheBlocks;
2003 }
2004 /* don't have to set sawDCacheSize here since it isn't overwritten
2005 * by ParseCacheInfoFile.
2006 */
2007 }
2008 if (afsd_verbose)
2009 printf("%s: chunkSize autotuned to %d\n", rn, chunkSize);
2010
2011 /* kernel computes # of dcache entries as min of cacheFiles and
2012 * dCacheSize, so we now make them equal.
2013 */
2014 cacheFiles = dCacheSize;
2015 } else {
2016 /* Disk cache:
2017 * Compute the number of cache files based on cache size,
2018 * but only if -files isn't given on the command line.
2019 * Don't let # files be so small as to prevent full utilization
2020 * of the cache unless user has explicitly asked for it.
2021 */
2022 if (chunkSize == 0) {
2023 /* Set chunksize to 256kB - 1MB depending on cache size */
2024 if (cacheBlocks < 500000) {
2025 chunkSize = 18;
2026 } else if (cacheBlocks < 1000000) {
2027 chunkSize = 19;
2028 } else {
2029 chunkSize = 20;
2030 }
2031 }
2032
2033 if (!filesSet) {
2034 cacheFiles = cacheBlocks / 32; /* Assume 32k avg filesize */
2035
2036 cacheFiles = max(cacheFiles, 1000);
2037
2038 /* Always allow more files than chunks. Presume average V-file
2039 * is ~67% of a chunk... (another guess, perhaps Honeyman will
2040 * have a grad student write a paper). i is KILOBYTES.
2041 */
2042 i = 1 << (chunkSize < 10 ? 0 : chunkSize - 10);
2043 cacheFiles = max(cacheFiles, 1.5 * (cacheBlocks / i));
2044
2045 /* never permit more files than blocks, while leaving space for
2046 * VolumeInfo and CacheItems files. VolumeInfo is usually 20K,
2047 * CacheItems is 50 Bytes / file (== 1K/20)
2048 */
2049 #define CACHEITMSZ (cacheFiles / 20)
2050 #define VOLINFOSZ 50 /* 40kB has been seen, be conservative */
2051 #define CELLINFOSZ 4 /* Assuming disk block size is 4k ... */
2052 #define INFOSZ (VOLINFOSZ+CELLINFOSZ+CACHEITMSZ)
2053
2054 /* Sanity check: If the obtained number of disk cache files
2055 * is larger than the number of available (4k) disk blocks, we're
2056 * doing something wrong. Fail hard so we can fix the bug instead
2057 * of silently hiding it like before */
2058
2059 if (cacheFiles > (cacheBlocks - INFOSZ) / 4) {
2060 fprintf(stderr,
2061 "%s: ASSERT: cacheFiles %d diskblocks %d\n",
2062 rn, cacheFiles, (cacheBlocks - INFOSZ) / 4);
2063 exit(1);
2064 }
2065 if (cacheFiles < 100)
2066 fprintf(stderr, "%s: WARNING: cache probably too small!\n",
2067 rn);
2068
2069 if (afsd_verbose)
2070 printf("%s: cacheFiles autotuned to %d\n", rn, cacheFiles);
2071 }
2072 #if 0
2073 /* This actually needs to
2074 1) use powers of 2
2075 2) not second-guess when a chunksize comes from the command line
2076 3) be less, um, small. 2^2??
2077 */
2078 /* Sanity check chunkSize */
2079 i = max(cacheBlocks / 1000, cacheBlocks / cacheFiles);
2080 chunkSize = min(chunkSize, i);
2081 chunkSize = max(chunkSize, 2);
2082 if (afsd_verbose)
2083 printf("%s: chunkSize autotuned to %d\n", rn, chunkSize);
2084 #endif
2085
2086 if (!sawDCacheSize) {
2087 dCacheSize = cacheFiles / 2;
2088 if (dCacheSize > 10000) {
2089 dCacheSize = 10000;
2090 }
2091 if (dCacheSize < 2000) {
2092 dCacheSize = 2000;
2093 }
2094 if (afsd_verbose)
2095 printf("%s: dCacheSize autotuned to %d\n", rn, dCacheSize);
2096 }
2097 }
2098 if (!sawCacheStatEntries) {
2099 if (chunkSize <= 13) {
2100 cacheStatEntries = dCacheSize / 4;
2101 } else if (chunkSize >= 16) {
2102 cacheStatEntries = dCacheSize * 1.5;
2103 } else {
2104 cacheStatEntries = dCacheSize;
2105 }
2106 if (afsd_verbose)
2107 printf("%s: cacheStatEntries autotuned to %d\n", rn,
2108 cacheStatEntries);
2109 }
2110
2111 #if !defined(AFS_CACHE_VNODE_PATH) && !defined(AFS_LINUX26_ENV)
2112 /*
2113 * Create and zero the inode table for the desired cache files.
2114 */
2115 inode_for_V = calloc(cacheFiles, sizeof(AFSD_INO_T));
2116 if (inode_for_V == (AFSD_INO_T *) 0) {
2117 printf
2118 ("%s: malloc() failed for cache file inode table with %d entries.\n",
2119 rn, cacheFiles);
2120 exit(1);
2121 }
2122 if (afsd_debug)
2123 printf("%s: %d inode_for_V entries at %p, %lu bytes\n", rn,
2124 cacheFiles, inode_for_V,
2125 (unsigned long)cacheFiles * sizeof(AFSD_INO_T));
2126 #endif
2127
2128 if (!(cacheFlags & AFSCALL_INIT_MEMCACHE)) {
2129 /*
2130 * Set up all the pathnames we'll need for later.
2131 */
2132 sprintf(fullpn_DCacheFile, "%s/%s", cacheBaseDir, DCACHEFILE);
2133 sprintf(fullpn_VolInfoFile, "%s/%s", cacheBaseDir, VOLINFOFILE);
2134 sprintf(fullpn_CellInfoFile, "%s/%s", cacheBaseDir, CELLINFOFILE);
2135 sprintf(fullpn_VFile, "%s/", cacheBaseDir);
2136 vFilePtr = fullpn_VFile + strlen(fullpn_VFile);
2137
2138 fsTypeMsg = CheckCacheBaseDir(cacheBaseDir);
2139 if (fsTypeMsg) {
2140 #ifdef AFS_SUN5_ENV
2141 printf("%s: WARNING: Cache dir check failed (%s)\n", rn, fsTypeMsg);
2142 #else
2143 printf("%s: ERROR: Cache dir check failed (%s)\n", rn, fsTypeMsg);
2144 exit(1);
2145 #endif
2146 }
2147 }
2148
2149 /*
2150 * Set up all the kernel processes needed for AFS.
2151 */
2152 #ifdef mac2
2153 setpgrp(getpid(), 0);
2154 #endif /* mac2 */
2155
2156 /*
2157 * Set the primary cell name.
2158 */
2159 afsd_syscall(AFSOP_SET_THISCELL, LclCellName);
2160
2161 /* Initialize RX daemons and services */
2162
2163 /* initialize the rx random number generator from user space */
2164 {
2165 /* rand-fortuna wants at least 128 bytes of seed; be generous. */
2166 unsigned char seedbuf[256];
2167 if (RAND_bytes(seedbuf, sizeof(seedbuf)) != 1) {
2168 printf("SEED_ENTROPY: Error retrieving seed entropy\n");
2169 }
2170 afsd_syscall(AFSOP_SEED_ENTROPY, seedbuf, sizeof(seedbuf));
2171 memset(seedbuf, 0, sizeof(seedbuf));
2172 /* parse multihomed address files */
2173 afs_uint32 addrbuf[MAXIPADDRS], maskbuf[MAXIPADDRS],
2174 mtubuf[MAXIPADDRS];
2175 char reason[1024];
2176 code = afsconf_ParseNetFiles(addrbuf, maskbuf, mtubuf, MAXIPADDRS, reason,
2177 AFSDIR_CLIENT_NETINFO_FILEPATH,
2178 AFSDIR_CLIENT_NETRESTRICT_FILEPATH);
2179 if (code > 0) {
2180 if (enable_rxbind)
2181 code = code | 0x80000000;
2182 afsd_syscall(AFSOP_ADVISEADDR, code, addrbuf, maskbuf, mtubuf);
2183 } else
2184 printf("ADVISEADDR: Error in specifying interface addresses:%s\n",
2185 reason);
2186 }
2187
2188 /* Set realtime priority for most threads to same as for biod's. */
2189 afsd_set_afsd_rtpri();
2190
2191 /* Start listener, then callback listener. Lastly, start rx event daemon.
2192 * Change in ordering is so that Linux port has socket fd in listener
2193 * process.
2194 * preallocs are passed for both listener and callback server. Only
2195 * the one which actually does the initialization uses them though.
2196 */
2197 if (preallocs < cacheStatEntries + 50)
2198 preallocs = cacheStatEntries + 50;
2199 #ifdef RXK_LISTENER_ENV
2200 if (afsd_verbose)
2201 printf("%s: Forking rx listener daemon.\n", rn);
2202 # ifdef AFS_SUN510_ENV
2203 fork_rx_syscall_wait(rn, AFSOP_RXLISTENER_DAEMON, preallocs,
2204 enable_peer_stats, enable_process_stats);
2205 # else /* !AFS_SUN510_ENV */
2206 fork_rx_syscall(rn, AFSOP_RXLISTENER_DAEMON, preallocs, enable_peer_stats,
2207 enable_process_stats);
2208 # endif /* !AFS_SUN510_ENV */
2209 #endif
2210 if (afsd_verbose)
2211 printf("%s: Forking rx callback listener.\n", rn);
2212 #ifndef RXK_LISTENER_ENV
2213 fork_rx_syscall(rn, AFSOP_START_RXCALLBACK, preallocs, enable_peer_stats,
2214 enable_process_stats);
2215 #else
2216 fork_syscall(rn, AFSOP_START_RXCALLBACK, preallocs, 0, 0);
2217 #endif
2218 #if defined(AFS_SUN5_ENV) || defined(RXK_LISTENER_ENV) || defined(RXK_UPCALL_ENV)
2219 if (afsd_verbose)
2220 printf("%s: Forking rxevent daemon.\n", rn);
2221 fork_rx_syscall(rn, AFSOP_RXEVENT_DAEMON);
2222 #endif
2223
2224 if (enable_afsdb) {
2225 if (afsd_verbose)
2226 printf("%s: Forking AFSDB lookup handler.\n", rn);
2227 afsd_fork(0, afsdb_thread, NULL);
2228 }
2229 code = afsd_syscall(AFSOP_BASIC_INIT, 1);
2230 if (code) {
2231 printf("%s: Error %d in basic initialization.\n", rn, code);
2232 exit(1);
2233 }
2234
2235 /*
2236 * Tell the kernel some basic information about the workstation's cache.
2237 */
2238 if (afsd_verbose)
2239 printf
2240 ("%s: Calling AFSOP_CACHEINIT: %d stat cache entries, %d optimum cache files, %d blocks in the cache, flags = 0x%x, dcache entries %d\n",
2241 rn, cacheStatEntries, cacheFiles, cacheBlocks, cacheFlags,
2242 dCacheSize);
2243 memset(&cparams, '\0', sizeof(cparams));
2244 cparams.cacheScaches = cacheStatEntries;
2245 cparams.cacheFiles = cacheFiles;
2246 cparams.cacheBlocks = cacheBlocks;
2247 cparams.cacheDcaches = dCacheSize;
2248 cparams.cacheVolumes = vCacheSize;
2249 cparams.chunkSize = chunkSize;
2250 cparams.setTimeFlag = 0;
2251 cparams.memCacheFlag = cacheFlags;
2252 cparams.dynamic_vcaches = afsd_dynamic_vcaches;
2253 code = afsd_syscall(AFSOP_CACHEINIT, &cparams);
2254 if (code) {
2255 printf("%s: Error %d during cache init.\n", rn, code);
2256 exit(1);
2257 }
2258
2259 /* do it before we init the cache inodes */
2260 if (enable_splitcache) {
2261 afsd_syscall(AFSOP_BUCKETPCT, 1, rwpct);
2262 afsd_syscall(AFSOP_BUCKETPCT, 2, ropct);
2263 }
2264
2265 if (afsd_CloseSynch)
2266 afsd_syscall(AFSOP_CLOSEWAIT);
2267
2268 /*
2269 * Sweep the workstation AFS cache directory, remembering the inodes of
2270 * valid files and deleting extraneous files. Keep sweeping until we
2271 * have the right number of data cache files or we've swept too many
2272 * times.
2273 *
2274 * This also creates files in the cache directory like VolumeItems and
2275 * CellItems, and thus must be ran before those are sent to the kernel.
2276 */
2277 if (afsd_verbose)
2278 printf("%s: Sweeping workstation's AFS cache directory.\n", rn);
2279 cacheIteration = 0;
2280 /* Memory-cache based system doesn't need any of this */
2281 if (!(cacheFlags & AFSCALL_INIT_MEMCACHE)) {
2282 do {
2283 cacheIteration++;
2284 if (SweepAFSCache(&vFilesFound)) {
2285 printf("%s: Error on sweep %d of workstation AFS cache \
2286 directory.\n", rn, cacheIteration);
2287 exit(1);
2288 }
2289 if (afsd_verbose)
2290 printf
2291 ("%s: %d out of %d data cache files found in sweep %d.\n",
2292 rn, vFilesFound, cacheFiles, cacheIteration);
2293 } while ((vFilesFound < cacheFiles)
2294 && (cacheIteration < MAX_CACHE_LOOPS));
2295 } else if (afsd_verbose)
2296 printf("%s: Using memory cache, not swept\n", rn);
2297
2298 /*
2299 * Pass the kernel the name of the workstation cache file holding the
2300 * dcache entries.
2301 */
2302 if (afsd_debug)
2303 printf("%s: Calling AFSOP_CACHEINFO: dcache file is '%s'\n", rn,
2304 fullpn_DCacheFile);
2305 /* once again, meaningless for a memory-based cache. */
2306 if (!(cacheFlags & AFSCALL_INIT_MEMCACHE))
2307 afsd_syscall(AFSOP_CACHEINFO, fullpn_DCacheFile);
2308
2309 /*
2310 * Pass the kernel the name of the workstation cache file holding the
2311 * cell information.
2312 */
2313 if (!(cacheFlags & AFSCALL_INIT_MEMCACHE)) {
2314 if (afsd_debug)
2315 printf("%s: Calling AFSOP_CELLINFO: cell info file is '%s'\n", rn,
2316 fullpn_CellInfoFile);
2317 afsd_syscall(AFSOP_CELLINFO, fullpn_CellInfoFile);
2318 }
2319
2320 if (rxmaxfrags) {
2321 if (afsd_verbose)
2322 printf("%s: Setting rxmaxfrags in kernel = %d\n", rn, rxmaxfrags);
2323 code = afsd_syscall(AFSOP_SET_RXMAXFRAGS, rxmaxfrags);
2324 if (code)
2325 printf("%s: Error seting rxmaxfrags\n", rn);
2326 }
2327
2328 if (rxmaxmtu) {
2329 if (afsd_verbose)
2330 printf("%s: Setting rxmaxmtu in kernel = %d\n", rn, rxmaxmtu);
2331 code = afsd_syscall(AFSOP_SET_RXMAXMTU, rxmaxmtu);
2332 if (code)
2333 printf("%s: Error seting rxmaxmtu\n", rn);
2334 }
2335
2336 if (inumcalc != NULL) {
2337 if (strcmp(inumcalc, "compat") == 0) {
2338 if (afsd_verbose) {
2339 printf("%s: Setting original inode number calculation method in kernel.\n",
2340 rn);
2341 }
2342 code = afsd_syscall(AFSOP_SET_INUMCALC, AFS_INUMCALC_COMPAT);
2343 if (code) {
2344 printf("%s: Error setting inode calculation method: code=%d.\n",
2345 rn, code);
2346 }
2347 } else if (strcmp(inumcalc, "md5") == 0) {
2348 if (afsd_verbose) {
2349 printf("%s: Setting md5 digest inode number calculation in kernel.\n",
2350 rn);
2351 }
2352 code = afsd_syscall(AFSOP_SET_INUMCALC, AFS_INUMCALC_MD5);
2353 if (code) {
2354 printf("%s: Error setting inode calculation method: code=%d.\n",
2355 rn, code);
2356 }
2357 } else {
2358 printf("%s: Unknown value for -inumcalc: %s."
2359 "Using default inode calculation method.\n", rn, inumcalc);
2360 }
2361 }
2362
2363 if (enable_dynroot) {
2364 if (afsd_verbose)
2365 printf("%s: Enabling dynroot support in kernel%s.\n", rn,
2366 (enable_dynroot==2)?", not showing cells.":"");
2367 code = afsd_syscall(AFSOP_SET_DYNROOT, 1);
2368 if (code)
2369 printf("%s: Error enabling dynroot support.\n", rn);
2370 }
2371
2372 if (enable_fakestat) {
2373 if (afsd_verbose)
2374 printf("%s: Enabling fakestat support in kernel%s.\n", rn,
2375 (enable_fakestat==1)?" for all mountpoints."
2376 :" for crosscell mountpoints");
2377 code = afsd_syscall(AFSOP_SET_FAKESTAT, enable_fakestat);
2378 if (code)
2379 printf("%s: Error enabling fakestat support.\n", rn);
2380 }
2381
2382 if (enable_backuptree) {
2383 if (afsd_verbose)
2384 printf("%s: Enabling backup tree support in kernel.\n", rn);
2385 code = afsd_syscall(AFSOP_SET_BACKUPTREE, enable_backuptree);
2386 if (code)
2387 printf("%s: Error enabling backup tree support.\n", rn);
2388 }
2389
2390 /*
2391 * Tell the kernel about each cell in the configuration.
2392 */
2393 afsconf_CellApply(cdir, ConfigCell, NULL);
2394 afsconf_CellAliasApply(cdir, ConfigCellAlias, NULL);
2395
2396 /* Initialize AFS daemon threads. */
2397 if (afsd_verbose)
2398 printf("%s: Forking AFS daemon.\n", rn);
2399 fork_syscall(rn, AFSOP_START_AFS);
2400
2401 if (afsd_verbose)
2402 printf("%s: Forking Check Server Daemon.\n", rn);
2403 fork_syscall(rn, AFSOP_START_CS);
2404
2405 if (afsd_verbose)
2406 printf("%s: Forking %d background daemons.\n", rn, nDaemons);
2407 #if defined(AFS_SGI_ENV) && defined(AFS_SGI_SHORTSTACK)
2408 /* Add one because for sgi we always "steal" the first daemon for a
2409 * different task if we only have a 4K stack.
2410 */
2411 nDaemons++;
2412 #endif
2413 for (i = 0; i < nDaemons; i++) {
2414 afsd_fork(0, daemon_thread, NULL);
2415 }
2416 #ifdef AFS_AIX32_ENV
2417 if (!sawBiod)
2418 nBiods = nDaemons * 2;
2419 if (nBiods < 5)
2420 nBiods = 5;
2421 for (i = 0; i < nBiods; i++) {
2422 fork_syscall(rn, AFSOP_START_BKG, nBiods);
2423 }
2424 #endif
2425
2426 /*
2427 * If the root volume has been explicitly set, tell the kernel.
2428 */
2429 if (rootVolSet) {
2430 if (afsd_verbose)
2431 printf("%s: Calling AFSOP_ROOTVOLUME with '%s'\n", rn,
2432 rootVolume);
2433 afsd_syscall(AFSOP_ROOTVOLUME, rootVolume);
2434 }
2435
2436 if (volume_ttl != 0) {
2437 if (afsd_verbose)
2438 printf("%s: Calling AFSOP_SET_VOLUME_TTL with '%d'\n", rn, volume_ttl);
2439 code = afsd_syscall(AFSOP_SET_VOLUME_TTL, volume_ttl);
2440 if (code == EFAULT) {
2441 if (volume_ttl < AFS_MIN_VOLUME_TTL)
2442 printf("%s: Failed to set volume ttl to %d seconds; "
2443 "value is too low.\n", rn, volume_ttl);
2444 else if (volume_ttl > AFS_MAX_VOLUME_TTL)
2445 printf("%s: Failed to set volume ttl to %d seconds; "
2446 "value is too high.\n", rn, volume_ttl);
2447 else
2448 printf("%s: Failed to set volume ttl to %d seconds; "
2449 "value is out of range.\n", rn, volume_ttl);
2450 } else if (code != 0) {
2451 printf("%s: Failed to set volume ttl to %d seconds; "
2452 "code=%d.\n", rn, volume_ttl, code);
2453 }
2454 }
2455
2456 /*
2457 * Pass the kernel the name of the workstation cache file holding the
2458 * volume information.
2459 */
2460 if (afsd_debug)
2461 printf("%s: Calling AFSOP_VOLUMEINFO: volume info file is '%s'\n", rn,
2462 fullpn_VolInfoFile);
2463 /* once again, meaningless for a memory-based cache. */
2464 if (!(cacheFlags & AFSCALL_INIT_MEMCACHE))
2465 afsd_syscall(AFSOP_VOLUMEINFO, fullpn_VolInfoFile);
2466
2467 /*
2468 * Give the kernel the names of the AFS files cached on the workstation's
2469 * disk.
2470 */
2471 if (!(cacheFlags & AFSCALL_INIT_MEMCACHE)) {
2472 int nocachefile = 0;
2473 if (afsd_debug)
2474 printf
2475 ("%s: Calling AFSOP_CACHEFILE for each of the %d files in '%s'\n",
2476 rn, cacheFiles, cacheBaseDir);
2477 /* ... and again ... */
2478 for (currVFile = 0; currVFile < cacheFiles; currVFile++) {
2479 if (!nocachefile) {
2480 sprintf(fullpn_VFile, "%s/D%d/V%d", cacheBaseDir, dir_for_V[currVFile], currVFile);
2481 code = afsd_syscall(AFSOP_CACHEFILE, fullpn_VFile);
2482 if (code) {
2483 if (currVFile == 0) {
2484 if (afsd_debug)
2485 printf
2486 ("%s: Calling AFSOP_CACHEINODE for each of the %d files in '%s'\n",
2487 rn, cacheFiles, cacheBaseDir);
2488 nocachefile = 1;
2489 } else {
2490 printf
2491 ("%s: Error calling AFSOP_CACHEFILE for '%s'\n",
2492 rn, fullpn_VFile);
2493 exit(1);
2494 }
2495 } else {
2496 continue;
2497 }
2498 /* fall through to setup-by-inode */
2499 }
2500 #if defined(AFS_SGI62_ENV) || !(defined(AFS_LINUX26_ENV) || defined(AFS_CACHE_VNODE_PATH))
2501 afsd_syscall(AFSOP_CACHEINODE, inode_for_V[currVFile]);
2502 #else
2503 printf
2504 ("%s: Error calling AFSOP_CACHEINODE: not configured\n",
2505 rn);
2506 exit(1);
2507 #endif
2508 }
2509 }
2510 /*end for */
2511 /*
2512 * All the necessary info has been passed into the kernel to run an AFS
2513 * system. Give the kernel our go-ahead.
2514 */
2515 if (afsd_debug)
2516 printf("%s: Calling AFSOP_GO with cacheSetTime = %d\n", rn,
2517 0);
2518 afsd_syscall(AFSOP_GO, 0);
2519
2520 /*
2521 * At this point, we have finished passing the kernel all the info
2522 * it needs to set up the AFS. Mount the AFS root.
2523 */
2524 printf("%s: All AFS daemons started.\n", rn);
2525
2526 if (afsd_verbose)
2527 printf("%s: Forking trunc-cache daemon.\n", rn);
2528 fork_syscall(rn, AFSOP_START_TRUNCDAEMON);
2529
2530 if (!enable_nomount) {
2531 afsd_mount_afs(rn, afsd_cacheMountDir);
2532 }
2533
2534 #ifndef UKERNEL
2535 if (afsd_rmtsys) {
2536 if (afsd_verbose)
2537 printf("%s: Forking 'rmtsys' daemon.\n", rn);
2538 afsd_fork(0, rmtsysd_thread, NULL);
2539 code = afsd_syscall(AFSOP_SET_RMTSYS_FLAG, 1);
2540 if (code)
2541 printf("%s: Error enabling rmtsys support.\n", rn);
2542 }
2543 #endif /* !UKERNEL */
2544 /*
2545 * Exit successfully.
2546 */
2547 return 0;
2548 }
2549
2550 #ifndef UKERNEL
2551 #include "AFS_component_version_number.c"
2552 #endif
2553
2554 void
2555 afsd_init(void)
2556 {
2557 struct cmd_syndesc *ts;
2558
2559 ts = cmd_CreateSyntax(NULL, NULL, NULL, 0, "start AFS");
2560
2561 /* 0 - 10 */
2562 cmd_AddParmAtOffset(ts, OPT_blocks, "-blocks", CMD_SINGLE,
2563 CMD_OPTIONAL, "1024 byte blocks in cache");
2564 cmd_AddParmAtOffset(ts, OPT_files, "-files", CMD_SINGLE,
2565 CMD_OPTIONAL, "files in cache");
2566 cmd_AddParmAtOffset(ts, OPT_rootvol, "-rootvol", CMD_SINGLE,
2567 CMD_OPTIONAL, "name of AFS root volume");
2568 cmd_AddParmAtOffset(ts, OPT_stat, "-stat", CMD_SINGLE,
2569 CMD_OPTIONAL, "number of stat entries");
2570 cmd_AddParmAtOffset(ts, OPT_memcache, "-memcache", CMD_FLAG,
2571 CMD_OPTIONAL, "run diskless");
2572 cmd_AddParmAtOffset(ts, OPT_cachedir, "-cachedir", CMD_SINGLE,
2573 CMD_OPTIONAL, "cache directory");
2574 cmd_AddParmAtOffset(ts, OPT_mountdir, "-mountdir", CMD_SINGLE,
2575 CMD_OPTIONAL, "mount location");
2576 cmd_AddParmAtOffset(ts, OPT_daemons, "-daemons", CMD_SINGLE,
2577 CMD_OPTIONAL, "number of daemons to use");
2578 cmd_AddParmAtOffset(ts, OPT_nosettime, "-nosettime", CMD_FLAG,
2579 CMD_OPTIONAL, "don't set the time");
2580 cmd_AddParmAtOffset(ts, OPT_verbose, "-verbose", CMD_FLAG,
2581 CMD_OPTIONAL, "display lots of information");
2582 cmd_AddParmAtOffset(ts, OPT_rmtsys, "-rmtsys", CMD_FLAG,
2583 CMD_OPTIONAL, "start NFS rmtsysd program");
2584 cmd_AddParmAtOffset(ts, OPT_debug, "-debug", CMD_FLAG,
2585 CMD_OPTIONAL, "display debug info");
2586 cmd_AddParmAtOffset(ts, OPT_chunksize, "-chunksize", CMD_SINGLE,
2587 CMD_OPTIONAL, "log(2) of chunk size");
2588 cmd_AddParmAtOffset(ts, OPT_dcache, "-dcache", CMD_SINGLE,
2589 CMD_OPTIONAL, "number of dcache entries");
2590 cmd_AddParmAtOffset(ts, OPT_volumes, "-volumes", CMD_SINGLE,
2591 CMD_OPTIONAL, "number of volume entries");
2592 cmd_AddParmAtOffset(ts, OPT_biods, "-biods", CMD_SINGLE,
2593 CMD_OPTIONAL, "number of bkg I/O daemons (aix vm)");
2594 cmd_AddParmAtOffset(ts, OPT_prealloc, "-prealloc", CMD_SINGLE,
2595 CMD_OPTIONAL, "number of 'small' preallocated blocks");
2596 cmd_AddParmAtOffset(ts, OPT_confdir, "-confdir", CMD_SINGLE,
2597 CMD_OPTIONAL, "configuration directory");
2598 cmd_AddParmAtOffset(ts, OPT_logfile, "-logfile", CMD_SINGLE,
2599 CMD_OPTIONAL, "Place to keep the CM log");
2600 cmd_AddParmAtOffset(ts, OPT_waitclose, "-waitclose", CMD_FLAG,
2601 CMD_OPTIONAL, "make close calls synchronous");
2602 cmd_AddParmAtOffset(ts, OPT_shutdown, "-shutdown", CMD_FLAG,
2603 CMD_OPTIONAL, "Shutdown all afs state");
2604 cmd_AddParmAtOffset(ts, OPT_peerstats, "-enable_peer_stats", CMD_FLAG,
2605 CMD_OPTIONAL, "Collect rpc statistics by peer");
2606 cmd_AddParmAtOffset(ts, OPT_processstats, "-enable_process_stats",
2607 CMD_FLAG, CMD_OPTIONAL, "Collect rpc statistics for this process");
2608 cmd_AddParmAtOffset(ts, OPT_memallocsleep, "-mem_alloc_sleep",
2609 CMD_FLAG, CMD_OPTIONAL | CMD_HIDE,
2610 "Allow sleeps when allocating memory cache");
2611 cmd_AddParmAtOffset(ts, OPT_afsdb, "-afsdb", CMD_FLAG,
2612 CMD_OPTIONAL, "Enable AFSDB support");
2613 cmd_AddParmAtOffset(ts, OPT_filesdir, "-files_per_subdir", CMD_SINGLE,
2614 CMD_OPTIONAL,
2615 "log(2) of the number of cache files per "
2616 "cache subdirectory");
2617 cmd_AddParmAtOffset(ts, OPT_dynroot, "-dynroot", CMD_FLAG,
2618 CMD_OPTIONAL, "Enable dynroot support");
2619 cmd_AddParmAtOffset(ts, OPT_fakestat, "-fakestat", CMD_FLAG,
2620 CMD_OPTIONAL,
2621 "Enable fakestat support for cross-cell mounts");
2622 cmd_AddParmAtOffset(ts, OPT_fakestatall, "-fakestat-all", CMD_FLAG,
2623 CMD_OPTIONAL,
2624 "Enable fakestat support for all mounts");
2625 cmd_AddParmAtOffset(ts, OPT_nomount, "-nomount", CMD_FLAG,
2626 CMD_OPTIONAL, "Do not mount AFS");
2627 cmd_AddParmAtOffset(ts, OPT_backuptree, "-backuptree", CMD_FLAG,
2628 CMD_OPTIONAL,
2629 "Prefer backup volumes for mountpoints in backup "
2630 "volumes");
2631 cmd_AddParmAtOffset(ts, OPT_rxbind, "-rxbind", CMD_FLAG,
2632 CMD_OPTIONAL,
2633 "Bind the Rx socket (one interface only)");
2634 cmd_AddParmAtOffset(ts, OPT_settime, "-settime", CMD_FLAG,
2635 CMD_OPTIONAL, "set the time");
2636 cmd_AddParmAtOffset(ts, OPT_rxpck, "-rxpck", CMD_SINGLE, CMD_OPTIONAL,
2637 "set rx_extraPackets to this value");
2638 cmd_AddParmAtOffset(ts, OPT_splitcache, "-splitcache", CMD_SINGLE,
2639 CMD_OPTIONAL,
2640 "Percentage RW versus RO in cache (specify as 60/40)");
2641 cmd_AddParmAtOffset(ts, OPT_nodynvcache, "-disable-dynamic-vcaches",
2642 CMD_FLAG, CMD_OPTIONAL,
2643 "disable stat/vcache cache growing as needed");
2644 cmd_AddParmAtOffset(ts, OPT_rxmaxmtu, "-rxmaxmtu", CMD_SINGLE,
2645 CMD_OPTIONAL, "set rx max MTU to use");
2646 cmd_AddParmAtOffset(ts, OPT_dynrootsparse, "-dynroot-sparse", CMD_FLAG,
2647 CMD_OPTIONAL,
2648 "Enable dynroot support with minimal cell list");
2649 cmd_AddParmAtOffset(ts, OPT_rxmaxfrags, "-rxmaxfrags", CMD_SINGLE,
2650 CMD_OPTIONAL,
2651 "Set the maximum number of UDP fragments Rx should "
2652 "send/receive per Rx packet");
2653 cmd_AddParmAtOffset(ts, OPT_inumcalc, "-inumcalc", CMD_SINGLE, CMD_OPTIONAL,
2654 "Set inode number calculation method");
2655 cmd_AddParmAtOffset(ts, OPT_volume_ttl, "-volume-ttl", CMD_SINGLE,
2656 CMD_OPTIONAL,
2657 "Set the vldb cache timeout value in seconds.");
2658 }
2659
2660 /**
2661 * Parse and check the command line options.
2662 *
2663 * @note The -shutdown command is handled in CheckOptions().
2664 */
2665 int
2666 afsd_parse(int argc, char **argv)
2667 {
2668 struct cmd_syndesc *ts = NULL;
2669 int code;
2670
2671 code = cmd_Parse(argc, argv, &ts);
2672 if (code) {
2673 return code;
2674 }
2675 code = CheckOptions(ts);
2676 cmd_FreeOptions(&ts);
2677 return code;
2678 }
2679
2680 /**
2681 * entry point for calling a syscall from another proc/thread.
2682 *
2683 * @param[in] rock a struct afsd_syscall_args* specifying what syscall to call
2684 *
2685 * @return unused
2686 * @retval NULL always
2687 */
2688 static void *
2689 call_syscall_thread(void *rock)
2690 {
2691 struct afsd_syscall_args *args = rock;
2692 int code;
2693
2694 if (args->rxpri) {
2695 afsd_set_rx_rtpri();
2696 }
2697
2698 code = afsd_call_syscall(args);
2699 if (code && args->syscall == AFSOP_START_CS) {
2700 printf("%s: No check server daemon in client.\n", args->rn);
2701 }
2702
2703 free(args);
2704
2705 return NULL;
2706 }
2707
2708 static void
2709 afsd_syscall_populate(struct afsd_syscall_args *args, int syscall, va_list ap)
2710 {
2711 afsd_syscall_param_t *params;
2712
2713 memset(args, 0, sizeof(struct afsd_syscall_args));
2714
2715 args->syscall = syscall;
2716 params = args->params;
2717
2718 switch (syscall) {
2719 case AFSOP_RXEVENT_DAEMON:
2720 case AFSOP_CLOSEWAIT:
2721 case AFSOP_START_AFS:
2722 case AFSOP_START_CS:
2723 case AFSOP_START_TRUNCDAEMON:
2724 break;
2725 case AFSOP_START_BKG:
2726 case AFSOP_SHUTDOWN:
2727 case AFSOP_SET_RXPCK:
2728 case AFSOP_BASIC_INIT:
2729 case AFSOP_SET_RXMAXFRAGS:
2730 case AFSOP_SET_RXMAXMTU:
2731 case AFSOP_SET_DYNROOT:
2732 case AFSOP_SET_FAKESTAT:
2733 case AFSOP_SET_BACKUPTREE:
2734 case AFSOP_BUCKETPCT:
2735 case AFSOP_GO:
2736 case AFSOP_SET_RMTSYS_FLAG:
2737 case AFSOP_SET_INUMCALC:
2738 case AFSOP_SET_VOLUME_TTL:
2739 params[0] = CAST_SYSCALL_PARAM((va_arg(ap, int)));
2740 break;
2741 case AFSOP_SET_THISCELL:
2742 case AFSOP_ROOTVOLUME:
2743 case AFSOP_VOLUMEINFO:
2744 case AFSOP_CACHEFILE:
2745 case AFSOP_CACHEINFO:
2746 case AFSOP_CACHEINIT:
2747 case AFSOP_CELLINFO:
2748 params[0] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
2749 break;
2750 case AFSOP_ADDCELLALIAS:
2751 params[0] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
2752 params[1] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
2753 break;
2754 case AFSOP_AFSDB_HANDLER:
2755 params[0] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
2756 params[1] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
2757 params[2] = CAST_SYSCALL_PARAM((va_arg(ap, int)));
2758 break;
2759 case AFSOP_BKG_HANDLER:
2760 params[0] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
2761 params[1] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
2762 params[2] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
2763 break;
2764 case AFSOP_RXLISTENER_DAEMON:
2765 case AFSOP_START_RXCALLBACK:
2766 params[0] = CAST_SYSCALL_PARAM((va_arg(ap, int)));
2767 params[1] = CAST_SYSCALL_PARAM((va_arg(ap, int)));
2768 params[2] = CAST_SYSCALL_PARAM((va_arg(ap, int)));
2769 break;
2770 case AFSOP_ADVISEADDR:
2771 params[0] = CAST_SYSCALL_PARAM((va_arg(ap, int)));
2772 params[1] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
2773 params[2] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
2774 params[3] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
2775 break;
2776 case AFSOP_ADDCELL2:
2777 params[0] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
2778 params[1] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
2779 params[2] = CAST_SYSCALL_PARAM((va_arg(ap, afs_int32)));
2780 params[3] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
2781 break;
2782 case AFSOP_CACHEINODE:
2783 #if defined AFS_SGI62_ENV
2784 {
2785 afs_int64 tmp = va_arg(ap, afs_int64);
2786 params[0] = CAST_SYSCALL_PARAM((afs_uint32)(tmp >> 32));
2787 params[1] = CAST_SYSCALL_PARAM((afs_uint32)(tmp & 0xffffffff));
2788 }
2789 #else
2790 params[0] = CAST_SYSCALL_PARAM((va_arg(ap, afs_uint32)));
2791 #endif
2792 break;
2793 case AFSOP_SEED_ENTROPY:
2794 params[0] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
2795 params[1] = CAST_SYSCALL_PARAM((va_arg(ap, afs_uint32)));
2796 break;
2797 default:
2798 printf("Unknown syscall enountered: %d\n", syscall);
2799 opr_Assert(0);
2800 }
2801 }
2802
2803 /**
2804 * common code for calling a syscall in another proc/thread.
2805 *
2806 * @param[in] rx 1 if this is a thread for RX stuff, 0 otherwise
2807 * @param[in] wait 1 if we should wait for the new proc/thread to finish, 0 to
2808 * let it run in the background
2809 * @param[in] rn the name of the running program
2810 * @param[in] syscall syscall to run
2811 */
2812 static void
2813 fork_syscall_impl(int rx, int wait, const char *rn, int syscall, va_list ap)
2814 {
2815 struct afsd_syscall_args *args;
2816
2817 args = malloc(sizeof(*args));
2818 afsd_syscall_populate(args, syscall, ap);
2819 args->rxpri = rx;
2820 args->rn = rn;
2821
2822 afsd_fork(wait, call_syscall_thread, args);
2823 }
2824
2825 /**
2826 * call a syscall in another process or thread.
2827 */
2828 static void
2829 fork_syscall(const char *rn, int syscall, ...)
2830 {
2831 va_list ap;
2832
2833 va_start(ap, syscall);
2834 fork_syscall_impl(0, 0, rn, syscall, ap);
2835 va_end(ap);
2836 }
2837
2838 /**
2839 * call a syscall in another process or thread, and give it RX priority.
2840 */
2841 static void
2842 fork_rx_syscall(const char *rn, int syscall, ...)
2843 {
2844 va_list ap;
2845
2846 va_start(ap, syscall);
2847 fork_syscall_impl(1, 0, rn, syscall, ap);
2848 va_end(ap);
2849 }
2850
2851 #if defined(AFS_SUN510_ENV) && defined(RXK_LISTENER_ENV)
2852 /**
2853 * call a syscall in another process or thread, give it RX priority, and wait
2854 * for it to finish before returning.
2855 */
2856 static void
2857 fork_rx_syscall_wait(const char *rn, int syscall, ...)
2858 {
2859 va_list ap;
2860
2861 va_start(ap, syscall);
2862 fork_syscall_impl(1, 1, rn, syscall, ap);
2863 va_end(ap);
2864 }
2865 #endif /* AFS_SUN510_ENV && RXK_LISTENER_ENV */
2866
2867 static int
2868 afsd_syscall(int syscall, ...)
2869 {
2870 va_list ap;
2871 struct afsd_syscall_args args;
2872
2873 va_start(ap, syscall);
2874 afsd_syscall_populate(&args, syscall, ap);
2875 va_end(ap);
2876
2877 return afsd_call_syscall(&args);
2878 }
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