src/afs/LINUX/osi_module.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  * Linux module support routines.
  12  *
  13  */
  14 #include <afsconfig.h>
  15 #include "afs/param.h"
  16
  17 RCSID
  18     ("$Header$");
  19
  20 #include <linux/module.h> /* early to avoid printf->printk mapping */
  21 #include "afs/sysincludes.h"
  22 #include "afsincludes.h"
  23 #include "h/unistd.h"           /* For syscall numbers. */
  24 #include "h/mm.h"
  25
  26 #ifdef AFS_AMD64_LINUX20_ENV
  27 #include "../asm/ia32_unistd.h"
  28 #endif
  29
  30 #include <linux/proc_fs.h>
  31 #include <linux/slab.h>
  32 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
  33 #include <linux/init.h>
  34 #include <linux/sched.h>
  35 #endif
  36
  37 extern struct file_system_type afs_fs_type;
  38
  39 #if !defined(AFS_LINUX24_ENV)
  40 static long get_page_offset(void);
  41 #endif
  42
  43 #if defined(AFS_LINUX24_ENV)
  44 DECLARE_MUTEX(afs_global_lock);
  45 #else
  46 struct semaphore afs_global_lock = MUTEX;
  47 #endif
  48 int afs_global_owner = 0;
  49 #if !defined(AFS_LINUX24_ENV)
  50 unsigned long afs_linux_page_offset = 0;        /* contains the PAGE_OFFSET value */
  51 #endif
  52
  53
  54 static int afs_ioctl(struct inode *, struct file *, unsigned int,
  55                      unsigned long);
  56
  57 static struct file_operations afs_syscall_fops = {
  58     .ioctl = afs_ioctl,
  59 };
  60
  61 int
  62 csdbproc_read(char *buffer, char **start, off_t offset, int count,
  63               int *eof, void *data)
  64 {
  65     int len, j;
  66     struct afs_q *cq, *tq;
  67     struct cell *tc;
  68     char tbuffer[16];
  69     afs_uint32 addr;
  70
  71     len = 0;
  72     ObtainReadLock(&afs_xcell);
  73     for (cq = CellLRU.next; cq != &CellLRU; cq = tq) {
  74         tc = QTOC(cq); tq = QNext(cq);
  75         len += sprintf(buffer + len, ">%s #(%d/%d)\n", tc->cellName,
  76                        tc->cellNum, tc->cellIndex);
  77         for (j = 0; j < MAXCELLHOSTS; j++) {
  78             if (!tc->cellHosts[j]) break;
  79             addr = ntohl(tc->cellHosts[j]->addr->sa_ip);
  80             sprintf(tbuffer, "%d.%d.%d.%d",
  81                     (int)((addr>>24) & 0xff), (int)((addr>>16) & 0xff),
  82                     (int)((addr>>8)  & 0xff), (int)( addr      & 0xff));
  83             len += sprintf(buffer + len, "%s #%s\n", tbuffer, tbuffer);
  84         }
  85     }
  86     ReleaseReadLock(&afs_xcell);
  87
  88     if (offset >= len) {
  89         *start = buffer;
  90         *eof = 1;
  91         return 0;
  92     }
  93     *start = buffer + offset;
  94     if ((len -= offset) > count)
  95         return count;
  96     *eof = 1;
  97     return len;
  98 }
  99
 100 int
 101 peerproc_read(char *buffer, char **start, off_t offset, int count,
 102               int *eof, void *data)
 103 {
 104     int len, i, j;
 105     struct rx_peer *sep;
 106
 107     len = 0;
 108     for (i = 0, j = 0; i < 256; i++) {
 109         for (sep = rx_peerHashTable[i]; sep; sep = sep->next, j++) {
 110             len += sprintf(buffer + len, "%lx: next=0x%lx, host=0x%x, ", (unsigned long)sep,
 111                    (unsigned long)sep->next, sep->host);
 112             len += sprintf(buffer + len, "ifMTU=%d, natMTU=%d, maxMTU=%d\n", sep->ifMTU,
 113                    sep->natMTU, sep->maxMTU);
 114             len += sprintf(buffer + len, "\trtt=%d:%d, timeout(%d:%d), nSent=%d, reSends=%d\n",
 115                    sep->rtt, sep->rtt_dev, sep->timeout.sec,
 116                    sep->timeout.usec, sep->nSent, sep->reSends);
 117             len += sprintf(buffer + len, "\trefCount=%d, port=%d, idleWhen=0x%x\n",
 118                    sep->refCount, sep->port, sep->idleWhen);
 119             len += sprintf(buffer + len, "\tCongestionQueue (0x%lx:0x%lx), inPacketSkew=0x%x, outPacketSkew=0x%x\n",
 120                  (unsigned long)sep->congestionQueue.prev, (unsigned long)sep->congestionQueue.next,
 121                  sep->inPacketSkew, sep->outPacketSkew);
 122 #ifdef RX_ENABLE_LOCKS
 123             len += sprintf(buffer + len, "\tpeer_lock=%d\n", sep->peer_lock);
 124 #endif /* RX_ENABLE_LOCKS */
 125         }
 126     }
 127
 128     if (offset >= len) {
 129         *start = buffer;
 130         *eof = 1;
 131         return 0;
 132     }
 133     *start = buffer + offset;
 134     if ((len -= offset) > count)
 135         return count;
 136     *eof = 1;
 137     return len;
 138 }
 139
 140 int
 141 rxstatsproc_read(char *buffer, char **start, off_t offset, int count,
 142               int *eof, void *data)
 143 {
 144     int len, i;
 145
 146     len = 0;
 147     len += sprintf(buffer + len, "packetRequests = %d\n", rx_stats.packetRequests);
 148     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_RECEIVE,
 149            rx_stats.receivePktAllocFailures);
 150     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_SEND,
 151            rx_stats.sendPktAllocFailures);
 152     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_SPECIAL,
 153            rx_stats.specialPktAllocFailures);
 154     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_RECV_CBUF,
 155            rx_stats.receiveCbufPktAllocFailures);
 156     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_SEND_CBUF,
 157            rx_stats.sendCbufPktAllocFailures);
 158     len += sprintf(buffer + len, "socketGreedy = %d\n", rx_stats.socketGreedy);
 159     len += sprintf(buffer + len, "bogusPacketOnRead = %d\n", rx_stats.bogusPacketOnRead);
 160     len += sprintf(buffer + len, "bogusHost = %d\n", rx_stats.bogusHost);
 161     len += sprintf(buffer + len, "noPacketOnRead = %d\n", rx_stats.noPacketOnRead);
 162     len += sprintf(buffer + len, "noPacketBuffersOnRead = %d\n",
 163            rx_stats.noPacketBuffersOnRead);
 164     len += sprintf(buffer + len, "selects = %d\n", rx_stats.selects);
 165     len += sprintf(buffer + len, "sendSelects = %d\n", rx_stats.sendSelects);
 166     for (i = 0; i < RX_N_PACKET_TYPES; i++)
 167         len += sprintf(buffer + len, "packetsRead[%d] = %d\n", i, rx_stats.packetsRead[i]);
 168     len += sprintf(buffer + len, "dataPacketsRead = %d\n", rx_stats.dataPacketsRead);
 169     len += sprintf(buffer + len, "ackPacketsRead = %d\n", rx_stats.ackPacketsRead);
 170     len += sprintf(buffer + len, "dupPacketsRead = %d\n", rx_stats.dupPacketsRead);
 171     len += sprintf(buffer + len, "spuriousPacketsRead = %d\n", rx_stats.spuriousPacketsRead);
 172     for (i = 0; i < RX_N_PACKET_TYPES; i++)
 173         len += sprintf(buffer + len, "packetsSent[%d] = %d\n", i, rx_stats.packetsSent[i]);
 174     len += sprintf(buffer + len, "ackPacketsSent = %d\n", rx_stats.ackPacketsSent);
 175     len += sprintf(buffer + len, "pingPacketsSent = %d\n", rx_stats.pingPacketsSent);
 176     len += sprintf(buffer + len, "abortPacketsSent = %d\n", rx_stats.abortPacketsSent);
 177     len += sprintf(buffer + len, "busyPacketsSent = %d\n", rx_stats.busyPacketsSent);
 178     len += sprintf(buffer + len, "dataPacketsSent = %d\n", rx_stats.dataPacketsSent);
 179     len += sprintf(buffer + len, "dataPacketsReSent = %d\n", rx_stats.dataPacketsReSent);
 180     len += sprintf(buffer + len, "dataPacketsPushed = %d\n", rx_stats.dataPacketsPushed);
 181     len += sprintf(buffer + len, "ignoreAckedPacket = %d\n", rx_stats.ignoreAckedPacket);
 182     len += sprintf(buffer + len, "totalRtt = %d sec, %d usec\n", rx_stats.totalRtt.sec,
 183            rx_stats.totalRtt.usec);
 184     len += sprintf(buffer + len, "minRtt = %d sec, %d usec\n", rx_stats.minRtt.sec,
 185            rx_stats.minRtt.usec);
 186     len += sprintf(buffer + len, "maxRtt = %d sec, %d usec\n", rx_stats.maxRtt.sec,
 187            rx_stats.maxRtt.usec);
 188     len += sprintf(buffer + len, "nRttSamples = %d\n", rx_stats.nRttSamples);
 189     len += sprintf(buffer + len, "nServerConns = %d\n", rx_stats.nServerConns);
 190     len += sprintf(buffer + len, "nClientConns = %d\n", rx_stats.nClientConns);
 191     len += sprintf(buffer + len, "nPeerStructs = %d\n", rx_stats.nPeerStructs);
 192     len += sprintf(buffer + len, "nCallStructs = %d\n", rx_stats.nCallStructs);
 193     len += sprintf(buffer + len, "nFreeCallStructs = %d\n", rx_stats.nFreeCallStructs);
 194     len += sprintf(buffer + len, "netSendFailures  = %d\n", rx_stats.netSendFailures);
 195     len += sprintf(buffer + len, "fatalErrors      = %d\n", rx_stats.fatalErrors);
 196
 197     if (offset >= len) {
 198         *start = buffer;
 199         *eof = 1;
 200         return 0;
 201     }
 202     *start = buffer + offset;
 203     if ((len -= offset) > count)
 204         return count;
 205     *eof = 1;
 206     return len;
 207 }
 208
 209 int
 210 rxproc_read(char *buffer, char **start, off_t offset, int count,
 211               int *eof, void *data)
 212 {
 213     int len, i;
 214
 215     len = 0;
 216     len += sprintf(buffer + len, "rx_extraQuota = %d\n", rx_extraQuota);
 217     len += sprintf(buffer + len, "rx_extraPackets = %d\n", rx_extraPackets);
 218     len += sprintf(buffer + len, "rx_stackSize = %d\n", rx_stackSize);
 219     len += sprintf(buffer + len, "rx_connDeadTime = %d\n", rx_connDeadTime);
 220     len += sprintf(buffer + len, "rx_idleConnectionTime = %d\n", rx_idleConnectionTime);
 221     len += sprintf(buffer + len, "rx_idlePeerTime = %d\n", rx_idlePeerTime);
 222     len += sprintf(buffer + len, "rx_initSendWindow = %d\n", rx_initSendWindow);
 223     len += sprintf(buffer + len, "rxi_nSendFrags = %d\n", rxi_nSendFrags);
 224     len += sprintf(buffer + len, "rx_nPackets = %d\n", rx_nPackets);
 225     len += sprintf(buffer + len, "rx_nFreePackets = %d\n", rx_nFreePackets);
 226     len += sprintf(buffer + len, "rx_socket = 0x%lx\n", (unsigned long)rx_socket);
 227     len += sprintf(buffer + len, "rx_Port = %d\n", rx_port);
 228     for (i = 0; i < RX_N_PACKET_CLASSES; i++)
 229         len += sprintf(buffer + len, "\trx_packetQuota[%d] = %d\n", i, rx_packetQuota[i]);
 230
 231     len += sprintf(buffer + len, "rx_nextCid = 0x%x\n", rx_nextCid);
 232     len += sprintf(buffer + len, "rx_epoch = 0u%u\n", rx_epoch);
 233     len += sprintf(buffer + len, "rx_waitingForPackets = %x\n", rx_waitingForPackets);
 234     len += sprintf(buffer + len, "rxi_nCalls = %d\n", rxi_nCalls);
 235     len += sprintf(buffer + len, "rxi_dataQuota = %d\n", rxi_dataQuota);
 236     len += sprintf(buffer + len, "rxi_availProcs = %d\n", rxi_availProcs);
 237     len += sprintf(buffer + len, "rxi_totalMin = %d\n", rxi_totalMin);
 238     len += sprintf(buffer + len, "rxi_minDeficit = %d\n", rxi_minDeficit);
 239
 240     len += sprintf(buffer + len, "rxevent_nFree = %d\nrxevent_nPosted = %d\n", rxevent_nFree, rxevent_nPosted);
 241
 242     if (offset >= len) {
 243         *start = buffer;
 244         *eof = 1;
 245         return 0;
 246     }
 247     *start = buffer + offset;
 248     if ((len -= offset) > count)
 249         return count;
 250     *eof = 1;
 251     return len;
 252 }
 253
 254 int
 255 connproc_read(char *buffer, char **start, off_t offset, int count,
 256               int *eof, void *data)
 257 {
 258     int len, i, j;
 259     struct rx_connection *sep;
 260
 261     len = 0;
 262     for (i = 0, j = 0; i < 256; i++) {
 263         for (sep = rx_connHashTable[i]; sep; sep = sep->next, j++) {
 264             len += sprintf(buffer + len, "%lx: next=0x%lx, peer=0x%lx, epoch=0x%x, cid=0x%x, ackRate=%d\n",
 265                            (unsigned long)sep, (unsigned long)sep->next, (unsigned long)sep->peer,
 266                            sep->epoch, sep->cid, sep->ackRate);
 267             len += sprintf(buffer + len, "\tcall[%lx=%d, %lx=%d, %lx=%d, %lx=%d]\n",
 268                            (unsigned long)sep->call[0], sep->callNumber[0],
 269                            (unsigned long)sep->call[1], sep->callNumber[1],
 270                            (unsigned long)sep->call[2], sep->callNumber[2],
 271                            (unsigned long)sep->call[3], sep->callNumber[3]);
 272             len += sprintf(buffer + len, "\ttimeout=%d, flags=0x%x, type=0x%x, serviceId=%d, service=0x%lx, refCount=%d\n",
 273                            sep->timeout, sep->flags, sep->type,
 274                            sep->serviceId, (unsigned long)sep->service, sep->refCount);
 275             len += sprintf(buffer + len, "\tserial=%d, lastSerial=%d, secsUntilDead=%d, secsUntilPing=%d, secIndex=%d\n",
 276                            sep->serial, sep->lastSerial, sep->secondsUntilDead,
 277                            sep->secondsUntilPing, sep->securityIndex);
 278             len += sprintf(buffer + len, "\terror=%d, secObject=0x%lx, secData=0x%lx, secHeaderSize=%d, secmaxTrailerSize=%d\n",
 279                            sep->error, (unsigned long)sep->securityObject,
 280                            (unsigned long)sep->securityData,
 281                            sep->securityHeaderSize, sep->securityMaxTrailerSize);
 282             len += sprintf(buffer + len, "\tchallEvent=0x%lx, lastSendTime=0x%x, maxSerial=%d, hardDeadTime=%d\n",
 283                            (unsigned long)sep->challengeEvent, sep->lastSendTime,
 284                            sep->maxSerial, sep->hardDeadTime);
 285             if (sep->flags & RX_CONN_MAKECALL_WAITING)
 286                 len += sprintf(buffer + len, "\t***** Conn in RX_CONN_MAKECALL_WAITING state *****\n");
 287 #ifdef RX_ENABLE_LOCKS
 288             len += sprintf(buffer + len, "\tcall_lock=%d, call_cv=%d, data_lock=%d, refCount=%d\n",
 289                            sep->conn_call_lock, sep->conn_call_cv,
 290                            sep->conn_data_lock, sep->refCount);
 291 #endif /* RX_ENABLE_LOCKS */
 292         }
 293     }
 294
 295     if (offset >= len) {
 296         *start = buffer;
 297         *eof = 1;
 298         return 0;
 299     }
 300     *start = buffer + offset;
 301     if ((len -= offset) > count)
 302         return count;
 303     *eof = 1;
 304     return len;
 305 }
 306
 307 int
 308 servicesproc_read(char *buffer, char **start, off_t offset, int count,
 309               int *eof, void *data)
 310 {
 311     int len, i, j;
 312     struct rx_service *sentry;
 313
 314     len = 0;
 315     for (i = 0, j = 0; i < RX_MAX_SERVICES; i++) {
 316         if ((sentry = rx_services[i])) {
 317             j++;
 318             len += sprintf(buffer + len,
 319                            "\t%lx: serviceId=%d, port=%d, serviceName=%s, socket=0x%lx\n",
 320                            (unsigned long)sentry, sentry->serviceId, sentry->servicePort,
 321                            sentry->serviceName, (unsigned long)sentry->socket);
 322             len += sprintf(buffer + len,
 323                            "\t\tnSecObj=%d, nReqRunning=%d, maxProcs=%d, minProcs=%d, connDeadTime=%d, idleDeadTime=%d\n",
 324                            sentry->nSecurityObjects, sentry->nRequestsRunning,
 325                            sentry->maxProcs, sentry->minProcs,
 326                            sentry->connDeadTime, sentry->idleDeadTime);
 327         }
 328     }
 329
 330     if (offset >= len) {
 331         *start = buffer;
 332         *eof = 1;
 333         return 0;
 334     }
 335     *start = buffer + offset;
 336     if ((len -= offset) > count)
 337         return count;
 338     *eof = 1;
 339     return len;
 340 }
 341
 342 int
 343 callproc_read(char *buffer, char **start, off_t offset, int count,
 344               int *eof, void *data)
 345 {
 346     int len, i, j, k;
 347     struct rx_connection *sep;
 348
 349     len = 0;
 350     for (i = 0, j = 0; i < 256; i++) {
 351         for (sep = rx_connHashTable[i]; sep; sep = sep->next) {
 352             for (k = 0; k < RX_MAXCALLS; k++) {
 353                 struct rx_call *call = sep->call[k];
 354                 if (call) {
 355                     j++;
 356                     len += sprintf(buffer + len,
 357                                    "%lx: conn=0x%lx, qiheader(0x%lx:0x%lx), tq(0x%lx:0x%lx), rq(0x%lx:0x%lx)\n",
 358                                    (unsigned long)call, (unsigned long)call->conn,
 359                                    (unsigned long)call->queue_item_header.prev,
 360                                    (unsigned long)call->queue_item_header.next,
 361                                    (unsigned long)call->tq.prev, (unsigned long)call->tq.next,
 362                                    (unsigned long)call->rq.prev, (unsigned long)call->rq.next);
 363                     len += sprintf(buffer + len,
 364                                    "\t: curvec=%d, curpos=%lx, nLeft=%d, nFree=%d, currPacket=0x%lx, callNumber=0x%lx\n",
 365                                    call->curvec, (unsigned long)call->curpos, call->nLeft,
 366                                    call->nFree, (unsigned long)call->currentPacket,
 367                                    (unsigned long)call->callNumber);
 368                     len += sprintf(buffer + len,
 369                                    "\t: channel=%d, state=0x%x, mode=0x%x, flags=0x%x, localStatus=0x%x, remStatus=0x%x\n",
 370                                    call->channel, call->state, call->mode,
 371                                    call->flags, call->localStatus,
 372                                    call->remoteStatus);
 373                     len += sprintf(buffer + len,
 374                                    "\t: error=%d, timeout=0x%x, rnext=0x%x, rprev=0x%x, rwind=0x%x, tfirst=0x%x, tnext=0x%x\n",
 375                                    call->error, call->timeout, call->rnext,
 376                                    call->rprev, call->rwind, call->tfirst,
 377                                    call->tnext);
 378                     len += sprintf(buffer + len,
 379                                    "\t: twind=%d, resendEvent=0x%lx, timeoutEvent=0x%lx, keepAliveEvent=0x%lx, delayedAckEvent=0x%lx\n",
 380                                    call->twind, (unsigned long)call->resendEvent,
 381                                    (unsigned long)call->timeoutEvent,
 382                                    (unsigned long)call->keepAliveEvent,
 383                                    (unsigned long)call->delayedAckEvent);
 384                     len += sprintf(buffer + len,
 385                                    "\t: lastSendTime=0x%x, lastReceiveTime=0x%x, lastAcked=0x%x, startTime=0x%x, startWait=0x%x\n",
 386                                    call->lastSendTime, call->lastReceiveTime,
 387                                    call->lastAcked, call->startTime.sec,
 388                                    call->startWait);
 389                     if (call->flags & RX_CALL_WAIT_PROC)
 390                         len += sprintf(buffer + len,
 391                                        "\t******** Call in RX_CALL_WAIT_PROC state **********\n");
 392                     if (call->flags & RX_CALL_WAIT_WINDOW_ALLOC)
 393                         len += sprintf(buffer + len,
 394                                        "\t******** Call in RX_CALL_WAIT_WINDOW_ALLOC state **********\n");
 395                     if (call->flags & RX_CALL_READER_WAIT)
 396                         len += sprintf(buffer + len,
 397                                        "\t******** Conn in RX_CALL_READER_WAIT state **********\n");
 398                     if (call->flags & RX_CALL_WAIT_PACKETS)
 399                         len += sprintf(buffer + len,
 400                                        "\t******** Conn in RX_CALL_WAIT_PACKETS state **********\n");
 401 #ifdef RX_ENABLE_LOCKS
 402                     len += sprintf(buffer + len,
 403                                    "\t: lock=0x%x, cv_twind=0x%x, cv_rq=0x%x, refCount= %d\n",
 404                                    call->lock, call->cv_twind, call->cv_rq,
 405                                    call->refCount);
 406 #endif /* RX_ENABLE_LOCKS */
 407                     len += sprintf(buffer + len, "\t: MTU=%d\n", call->MTU);
 408                 }
 409             }
 410         }
 411     }
 412
 413     if (offset >= len) {
 414         *start = buffer;
 415         *eof = 1;
 416         return 0;
 417     }
 418     *start = buffer + offset;
 419     if ((len -= offset) > count)
 420         return count;
 421     *eof = 1;
 422     return len;
 423 }
 424
 425 static struct proc_dir_entry *openafs_procfs;
 426 #if defined(AFS_LINUX_64BIT_KERNEL) && !defined(AFS_ALPHA_LINUX20_ENV) && !defined(AFS_IA64_LINUX20_ENV)
 427 static int ioctl32_done;
 428 #endif
 429
 430 #ifdef AFS_LINUX24_ENV
 431 static int
 432 afsproc_init(void)
 433 {
 434     struct proc_dir_entry *entry1;
 435     struct proc_dir_entry *entry;
 436
 437     openafs_procfs = proc_mkdir(PROC_FSDIRNAME, proc_root_fs);
 438     entry1 = create_proc_entry(PROC_SYSCALL_NAME, 0666, openafs_procfs);
 439
 440     entry1->proc_fops = &afs_syscall_fops;
 441
 442     entry1->owner = THIS_MODULE;
 443
 444     entry = create_proc_read_entry(PROC_CELLSERVDB_NAME, (S_IFREG|S_IRUGO), openafs_procfs, csdbproc_read, NULL);
 445
 446     entry = create_proc_read_entry(PROC_PEER_NAME, (S_IFREG|S_IRUGO), openafs_procfs, peerproc_read, NULL);
 447
 448     entry = create_proc_read_entry(PROC_CONN_NAME, (S_IFREG|S_IRUGO), openafs_procfs, connproc_read, NULL);
 449
 450     entry = create_proc_read_entry(PROC_CALL_NAME, (S_IFREG|S_IRUGO), openafs_procfs, connproc_read, NULL);
 451
 452     entry = create_proc_read_entry(PROC_RX_NAME, (S_IFREG|S_IRUGO), openafs_procfs, rxproc_read, NULL);
 453
 454     entry = create_proc_read_entry(PROC_SERVICES_NAME, (S_IFREG|S_IRUGO), openafs_procfs, servicesproc_read, NULL);
 455
 456     entry = create_proc_read_entry(PROC_RXSTATS_NAME, (S_IFREG|S_IRUGO), openafs_procfs, rxstatsproc_read, NULL);
 457 #if defined(AFS_LINUX_64BIT_KERNEL) && !defined(AFS_ALPHA_LINUX20_ENV) && !defined(AFS_IA64_LINUX20_ENV)
 458     if (register_ioctl32_conversion(VIOC_SYSCALL32, NULL) == 0)
 459             ioctl32_done = 1;
 460 #endif
 461
 462     return 0;
 463 }
 464
 465 static void
 466 afsproc_exit(void)
 467 {
 468     remove_proc_entry(PROC_RXSTATS_NAME, openafs_procfs);
 469     remove_proc_entry(PROC_SERVICES_NAME, openafs_procfs);
 470     remove_proc_entry(PROC_RX_NAME, openafs_procfs);
 471     remove_proc_entry(PROC_CALL_NAME, openafs_procfs);
 472     remove_proc_entry(PROC_CONN_NAME, openafs_procfs);
 473     remove_proc_entry(PROC_PEER_NAME, openafs_procfs);
 474     remove_proc_entry(PROC_CELLSERVDB_NAME, openafs_procfs);
 475     remove_proc_entry(PROC_SYSCALL_NAME, openafs_procfs);
 476     remove_proc_entry(PROC_FSDIRNAME, proc_root_fs);
 477 #if defined(AFS_LINUX_64BIT_KERNEL) && !defined(AFS_ALPHA_LINUX20_ENV) && !defined(AFS_IA64_LINUX20_ENV)
 478     if (ioctl32_done)
 479             unregister_ioctl32_conversion(VIOC_SYSCALL32);
 480 #endif
 481 }
 482 #endif
 483
 484 extern asmlinkage long
 485 afs_syscall(long syscall, long parm1, long parm2, long parm3, long parm4);
 486
 487 static int
 488 afs_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 489           unsigned long arg)
 490 {
 491
 492     struct afsprocdata sysargs;
 493     struct afsprocdata32 sysargs32;
 494
 495     if (cmd != VIOC_SYSCALL && cmd != VIOC_SYSCALL32) return -EINVAL;
 496
 497 #if defined(AFS_LINUX_64BIT_KERNEL) && !defined(AFS_ALPHA_LINUX20_ENV) && !defined(AFS_IA64_LINUX20_ENV)
 498 #ifdef AFS_SPARC64_LINUX24_ENV
 499     if (current->thread.flags & SPARC_FLAG_32BIT)
 500 #elif defined(AFS_SPARC64_LINUX20_ENV)
 501     if (current->tss.flags & SPARC_FLAG_32BIT)
 502 #elif defined(AFS_AMD64_LINUX20_ENV)
 503 #ifdef AFS_LINUX26_ENV
 504     if (test_thread_flag(TIF_IA32))
 505 #else
 506     if (current->thread.flags & THREAD_IA32)
 507 #endif
 508 #elif defined(AFS_PPC64_LINUX20_ENV)
 509 #ifdef AFS_PPC64_LINUX26_ENV
 510     if (current->thread_info->flags & _TIF_32BIT)
 511 #else /*Linux 2.6 */
 512     if (current->thread.flags & PPC_FLAG_32BIT)
 513 #endif
 514 #elif defined(AFS_S390X_LINUX26_ENV)
 515     if (test_thread_flag(TIF_31BIT))
 516 #elif defined(AFS_S390X_LINUX20_ENV)
 517     if (current->thread.flags & S390_FLAG_31BIT)
 518 #else
 519 #error Not done for this linux type
 520 #endif
 521     {
 522         if (copy_from_user(&sysargs32, (void *)arg,
 523                            sizeof(struct afsprocdata32)))
 524             return -EFAULT;
 525
 526         return afs_syscall((unsigned long)sysargs32.syscall,
 527                            (unsigned long)sysargs32.param1,
 528                            (unsigned long)sysargs32.param2,
 529                            (unsigned long)sysargs32.param3,
 530                            (unsigned long)sysargs32.param4);
 531     } else
 532 #endif
 533     {
 534         if (copy_from_user(&sysargs, (void *)arg, sizeof(struct afsprocdata)))
 535             return -EFAULT;
 536
 537         return afs_syscall(sysargs.syscall, sysargs.param1,
 538                            sysargs.param2, sysargs.param3, sysargs.param4);
 539     }
 540 }
 541
 542
 543 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 544 int __init
 545 afs_init(void)
 546 #else
 547 int
 548 init_module(void)
 549 #endif
 550 {
 551     int e;
 552     RWLOCK_INIT(&afs_xosi, "afs_xosi");
 553
 554 #if !defined(AFS_LINUX24_ENV)
 555     /* obtain PAGE_OFFSET value */
 556     afs_linux_page_offset = get_page_offset();
 557
 558 #ifndef AFS_S390_LINUX22_ENV
 559     if (afs_linux_page_offset == 0) {
 560         /* couldn't obtain page offset so can't continue */
 561         printf("afs: Unable to obtain PAGE_OFFSET. Exiting..");
 562         return -EIO;
 563     }
 564 #endif /* AFS_S390_LINUX22_ENV */
 565 #endif /* !defined(AFS_LINUX24_ENV) */
 566
 567     osi_Init();
 568
 569     e = osi_syscall_init();
 570     if (e) return e;
 571     register_filesystem(&afs_fs_type);
 572     osi_sysctl_init();
 573 #ifdef AFS_LINUX24_ENV
 574     afsproc_init();
 575 #endif
 576
 577     return 0;
 578 }
 579
 580 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 581 void __exit
 582 afs_cleanup(void)
 583 #else
 584 void
 585 cleanup_module(void)
 586 #endif
 587 {
 588     osi_sysctl_clean();
 589     osi_syscall_clean();
 590     unregister_filesystem(&afs_fs_type);
 591
 592     osi_linux_free_inode_pages();       /* Invalidate all pages using AFS inodes. */
 593     osi_linux_free_afs_memory();
 594
 595 #ifdef AFS_LINUX24_ENV
 596     afsproc_exit();
 597 #endif
 598     return;
 599 }
 600
 601 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 602 module_init(afs_init);
 603 module_exit(afs_cleanup);
 604 #endif
 605
 606
 607 #if !defined(AFS_LINUX24_ENV)
 608 static long
 609 get_page_offset(void)
 610 {
 611 #if defined(AFS_PPC_LINUX22_ENV) || defined(AFS_SPARC64_LINUX20_ENV) || defined(AFS_SPARC_LINUX20_ENV) || defined(AFS_ALPHA_LINUX20_ENV) || defined(AFS_S390_LINUX22_ENV) || defined(AFS_IA64_LINUX20_ENV) || defined(AFS_PARISC_LINUX24_ENV) || defined(AFS_AMD64_LINUX20_ENV) || defined(AFS_PPC64_LINUX20_ENV)
 612     return PAGE_OFFSET;
 613 #else
 614     struct task_struct *p, *q;
 615
 616     /* search backward thru the circular list */
 617 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 618     read_lock(&tasklist_lock);
 619 #endif
 620     /* search backward thru the circular list */
 621 #ifdef DEFINED_PREV_TASK
 622     for (q = current; p = q; q = prev_task(p)) {
 623 #else
 624     for (p = current; p; p = p->prev_task) {
 625 #endif
 626         if (p->pid == 1) {
 627 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 628             read_unlock(&tasklist_lock);
 629 #endif
 630             return p->addr_limit.seg;
 631         }
 632     }
 633
 634 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 635     read_unlock(&tasklist_lock);
 636 #endif
 637     return 0;
 638 #endif
 639 }
 640 #endif /* !AFS_LINUX24_ENV */