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 static inline int afs_ioctl(struct inode *, struct file *, unsigned int,
  54                      unsigned long);
  55 #if defined(HAVE_UNLOCKED_IOCTL) || defined(HAVE_COMPAT_IOCTL)
  56 static long afs_unlocked_ioctl(struct file *, unsigned int, unsigned long);
  57 #endif
  58
  59 static struct file_operations afs_syscall_fops = {
  60 #ifdef HAVE_UNLOCKED_IOCTL
  61     .unlocked_ioctl = afs_unlocked_ioctl,
  62 #else
  63     .ioctl = afs_ioctl,
  64 #endif
  65 #ifdef HAVE_COMPAT_IOCTL
  66     .compat_ioctl = afs_unlocked_ioctl,
  67 #endif
  68 };
  69
  70 int
  71 csdbproc_read(char *buffer, char **start, off_t offset, int count,
  72               int *eof, void *data)
  73 {
  74     int len, j;
  75     struct afs_q *cq, *tq;
  76     struct cell *tc;
  77     char tbuffer[16];
  78     afs_uint32 addr;
  79
  80     len = 0;
  81     ObtainReadLock(&afs_xcell);
  82     for (cq = CellLRU.next; cq != &CellLRU; cq = tq) {
  83         tc = QTOC(cq); tq = QNext(cq);
  84         len += sprintf(buffer + len, ">%s #(%d/%d)\n", tc->cellName,
  85                        tc->cellNum, tc->cellIndex);
  86         for (j = 0; j < MAXCELLHOSTS; j++) {
  87             if (!tc->cellHosts[j]) break;
  88             addr = ntohl(tc->cellHosts[j]->addr->sa_ip);
  89             sprintf(tbuffer, "%d.%d.%d.%d",
  90                     (int)((addr>>24) & 0xff), (int)((addr>>16) & 0xff),
  91                     (int)((addr>>8)  & 0xff), (int)( addr      & 0xff));
  92             len += sprintf(buffer + len, "%s #%s\n", tbuffer, tbuffer);
  93         }
  94     }
  95     ReleaseReadLock(&afs_xcell);
  96
  97     if (offset >= len) {
  98         *start = buffer;
  99         *eof = 1;
 100         return 0;
 101     }
 102     *start = buffer + offset;
 103     if ((len -= offset) > count)
 104         return count;
 105     *eof = 1;
 106     return len;
 107 }
 108
 109 int
 110 peerproc_read(char *buffer, char **start, off_t offset, int count,
 111               int *eof, void *data)
 112 {
 113     int len, i, j;
 114     struct rx_peer *sep;
 115
 116     len = 0;
 117     for (i = 0, j = 0; i < 256; i++) {
 118         for (sep = rx_peerHashTable[i]; sep; sep = sep->next, j++) {
 119             len += sprintf(buffer + len, "%lx: next=0x%lx, host=0x%x, ", (unsigned long)sep,
 120                    (unsigned long)sep->next, sep->host);
 121             len += sprintf(buffer + len, "ifMTU=%d, natMTU=%d, maxMTU=%d\n", sep->ifMTU,
 122                    sep->natMTU, sep->maxMTU);
 123             len += sprintf(buffer + len, "\trtt=%d:%d, timeout(%d:%d), nSent=%d, reSends=%d\n",
 124                    sep->rtt, sep->rtt_dev, sep->timeout.sec,
 125                    sep->timeout.usec, sep->nSent, sep->reSends);
 126             len += sprintf(buffer + len, "\trefCount=%d, port=%d, idleWhen=0x%x\n",
 127                    sep->refCount, sep->port, sep->idleWhen);
 128             len += sprintf(buffer + len, "\tCongestionQueue (0x%lx:0x%lx), inPacketSkew=0x%x, outPacketSkew=0x%x\n",
 129                  (unsigned long)sep->congestionQueue.prev, (unsigned long)sep->congestionQueue.next,
 130                  sep->inPacketSkew, sep->outPacketSkew);
 131 #ifdef RX_ENABLE_LOCKS
 132             len += sprintf(buffer + len, "\tpeer_lock=%d\n", sep->peer_lock);
 133 #endif /* RX_ENABLE_LOCKS */
 134         }
 135     }
 136
 137     if (offset >= len) {
 138         *start = buffer;
 139         *eof = 1;
 140         return 0;
 141     }
 142     *start = buffer + offset;
 143     if ((len -= offset) > count)
 144         return count;
 145     *eof = 1;
 146     return len;
 147 }
 148
 149 int
 150 rxstatsproc_read(char *buffer, char **start, off_t offset, int count,
 151               int *eof, void *data)
 152 {
 153     int len, i;
 154
 155     len = 0;
 156     len += sprintf(buffer + len, "packetRequests = %d\n", rx_stats.packetRequests);
 157     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_RECEIVE,
 158            rx_stats.receivePktAllocFailures);
 159     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_SEND,
 160            rx_stats.sendPktAllocFailures);
 161     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_SPECIAL,
 162            rx_stats.specialPktAllocFailures);
 163     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_RECV_CBUF,
 164            rx_stats.receiveCbufPktAllocFailures);
 165     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_SEND_CBUF,
 166            rx_stats.sendCbufPktAllocFailures);
 167     len += sprintf(buffer + len, "socketGreedy = %d\n", rx_stats.socketGreedy);
 168     len += sprintf(buffer + len, "bogusPacketOnRead = %d\n", rx_stats.bogusPacketOnRead);
 169     len += sprintf(buffer + len, "bogusHost = %d\n", rx_stats.bogusHost);
 170     len += sprintf(buffer + len, "noPacketOnRead = %d\n", rx_stats.noPacketOnRead);
 171     len += sprintf(buffer + len, "noPacketBuffersOnRead = %d\n",
 172            rx_stats.noPacketBuffersOnRead);
 173     len += sprintf(buffer + len, "selects = %d\n", rx_stats.selects);
 174     len += sprintf(buffer + len, "sendSelects = %d\n", rx_stats.sendSelects);
 175     for (i = 0; i < RX_N_PACKET_TYPES; i++)
 176         len += sprintf(buffer + len, "packetsRead[%d] = %d\n", i, rx_stats.packetsRead[i]);
 177     len += sprintf(buffer + len, "dataPacketsRead = %d\n", rx_stats.dataPacketsRead);
 178     len += sprintf(buffer + len, "ackPacketsRead = %d\n", rx_stats.ackPacketsRead);
 179     len += sprintf(buffer + len, "dupPacketsRead = %d\n", rx_stats.dupPacketsRead);
 180     len += sprintf(buffer + len, "spuriousPacketsRead = %d\n", rx_stats.spuriousPacketsRead);
 181     for (i = 0; i < RX_N_PACKET_TYPES; i++)
 182         len += sprintf(buffer + len, "packetsSent[%d] = %d\n", i, rx_stats.packetsSent[i]);
 183     len += sprintf(buffer + len, "ackPacketsSent = %d\n", rx_stats.ackPacketsSent);
 184     len += sprintf(buffer + len, "pingPacketsSent = %d\n", rx_stats.pingPacketsSent);
 185     len += sprintf(buffer + len, "abortPacketsSent = %d\n", rx_stats.abortPacketsSent);
 186     len += sprintf(buffer + len, "busyPacketsSent = %d\n", rx_stats.busyPacketsSent);
 187     len += sprintf(buffer + len, "dataPacketsSent = %d\n", rx_stats.dataPacketsSent);
 188     len += sprintf(buffer + len, "dataPacketsReSent = %d\n", rx_stats.dataPacketsReSent);
 189     len += sprintf(buffer + len, "dataPacketsPushed = %d\n", rx_stats.dataPacketsPushed);
 190     len += sprintf(buffer + len, "ignoreAckedPacket = %d\n", rx_stats.ignoreAckedPacket);
 191     len += sprintf(buffer + len, "totalRtt = %d sec, %d usec\n", rx_stats.totalRtt.sec,
 192            rx_stats.totalRtt.usec);
 193     len += sprintf(buffer + len, "minRtt = %d sec, %d usec\n", rx_stats.minRtt.sec,
 194            rx_stats.minRtt.usec);
 195     len += sprintf(buffer + len, "maxRtt = %d sec, %d usec\n", rx_stats.maxRtt.sec,
 196            rx_stats.maxRtt.usec);
 197     len += sprintf(buffer + len, "nRttSamples = %d\n", rx_stats.nRttSamples);
 198     len += sprintf(buffer + len, "nServerConns = %d\n", rx_stats.nServerConns);
 199     len += sprintf(buffer + len, "nClientConns = %d\n", rx_stats.nClientConns);
 200     len += sprintf(buffer + len, "nPeerStructs = %d\n", rx_stats.nPeerStructs);
 201     len += sprintf(buffer + len, "nCallStructs = %d\n", rx_stats.nCallStructs);
 202     len += sprintf(buffer + len, "nFreeCallStructs = %d\n", rx_stats.nFreeCallStructs);
 203     len += sprintf(buffer + len, "netSendFailures  = %d\n", rx_stats.netSendFailures);
 204     len += sprintf(buffer + len, "fatalErrors      = %d\n", rx_stats.fatalErrors);
 205
 206     if (offset >= len) {
 207         *start = buffer;
 208         *eof = 1;
 209         return 0;
 210     }
 211     *start = buffer + offset;
 212     if ((len -= offset) > count)
 213         return count;
 214     *eof = 1;
 215     return len;
 216 }
 217
 218 int
 219 rxproc_read(char *buffer, char **start, off_t offset, int count,
 220               int *eof, void *data)
 221 {
 222     int len, i;
 223
 224     len = 0;
 225     len += sprintf(buffer + len, "rx_extraQuota = %d\n", rx_extraQuota);
 226     len += sprintf(buffer + len, "rx_extraPackets = %d\n", rx_extraPackets);
 227     len += sprintf(buffer + len, "rx_stackSize = %d\n", rx_stackSize);
 228     len += sprintf(buffer + len, "rx_connDeadTime = %d\n", rx_connDeadTime);
 229     len += sprintf(buffer + len, "rx_idleConnectionTime = %d\n", rx_idleConnectionTime);
 230     len += sprintf(buffer + len, "rx_idlePeerTime = %d\n", rx_idlePeerTime);
 231     len += sprintf(buffer + len, "rx_initSendWindow = %d\n", rx_initSendWindow);
 232     len += sprintf(buffer + len, "rxi_nSendFrags = %d\n", rxi_nSendFrags);
 233     len += sprintf(buffer + len, "rx_nPackets = %d\n", rx_nPackets);
 234     len += sprintf(buffer + len, "rx_nFreePackets = %d\n", rx_nFreePackets);
 235     len += sprintf(buffer + len, "rx_socket = 0x%lx\n", (unsigned long)rx_socket);
 236     len += sprintf(buffer + len, "rx_Port = %d\n", rx_port);
 237     for (i = 0; i < RX_N_PACKET_CLASSES; i++)
 238         len += sprintf(buffer + len, "\trx_packetQuota[%d] = %d\n", i, rx_packetQuota[i]);
 239
 240     len += sprintf(buffer + len, "rx_nextCid = 0x%x\n", rx_nextCid);
 241     len += sprintf(buffer + len, "rx_epoch = 0u%u\n", rx_epoch);
 242     len += sprintf(buffer + len, "rx_waitingForPackets = %x\n", rx_waitingForPackets);
 243     len += sprintf(buffer + len, "rxi_nCalls = %d\n", rxi_nCalls);
 244     len += sprintf(buffer + len, "rxi_dataQuota = %d\n", rxi_dataQuota);
 245     len += sprintf(buffer + len, "rxi_availProcs = %d\n", rxi_availProcs);
 246     len += sprintf(buffer + len, "rxi_totalMin = %d\n", rxi_totalMin);
 247     len += sprintf(buffer + len, "rxi_minDeficit = %d\n", rxi_minDeficit);
 248
 249     len += sprintf(buffer + len, "rxevent_nFree = %d\nrxevent_nPosted = %d\n", rxevent_nFree, rxevent_nPosted);
 250
 251     if (offset >= len) {
 252         *start = buffer;
 253         *eof = 1;
 254         return 0;
 255     }
 256     *start = buffer + offset;
 257     if ((len -= offset) > count)
 258         return count;
 259     *eof = 1;
 260     return len;
 261 }
 262
 263 int
 264 connproc_read(char *buffer, char **start, off_t offset, int count,
 265               int *eof, void *data)
 266 {
 267     int len, i, j;
 268     struct rx_connection *sep;
 269
 270     len = 0;
 271     for (i = 0, j = 0; i < 256; i++) {
 272         for (sep = rx_connHashTable[i]; sep; sep = sep->next, j++) {
 273             len += sprintf(buffer + len, "%lx: next=0x%lx, peer=0x%lx, epoch=0x%x, cid=0x%x, ackRate=%d\n",
 274                            (unsigned long)sep, (unsigned long)sep->next, (unsigned long)sep->peer,
 275                            sep->epoch, sep->cid, sep->ackRate);
 276             len += sprintf(buffer + len, "\tcall[%lx=%d, %lx=%d, %lx=%d, %lx=%d]\n",
 277                            (unsigned long)sep->call[0], sep->callNumber[0],
 278                            (unsigned long)sep->call[1], sep->callNumber[1],
 279                            (unsigned long)sep->call[2], sep->callNumber[2],
 280                            (unsigned long)sep->call[3], sep->callNumber[3]);
 281             len += sprintf(buffer + len, "\ttimeout=%d, flags=0x%x, type=0x%x, serviceId=%d, service=0x%lx, refCount=%d\n",
 282                            sep->timeout, sep->flags, sep->type,
 283                            sep->serviceId, (unsigned long)sep->service, sep->refCount);
 284             len += sprintf(buffer + len, "\tserial=%d, lastSerial=%d, secsUntilDead=%d, secsUntilPing=%d, secIndex=%d\n",
 285                            sep->serial, sep->lastSerial, sep->secondsUntilDead,
 286                            sep->secondsUntilPing, sep->securityIndex);
 287             len += sprintf(buffer + len, "\terror=%d, secObject=0x%lx, secData=0x%lx, secHeaderSize=%d, secmaxTrailerSize=%d\n",
 288                            sep->error, (unsigned long)sep->securityObject,
 289                            (unsigned long)sep->securityData,
 290                            sep->securityHeaderSize, sep->securityMaxTrailerSize);
 291             len += sprintf(buffer + len, "\tchallEvent=0x%lx, lastSendTime=0x%x, maxSerial=%d, hardDeadTime=%d\n",
 292                            (unsigned long)sep->challengeEvent, sep->lastSendTime,
 293                            sep->maxSerial, sep->hardDeadTime);
 294             if (sep->flags & RX_CONN_MAKECALL_WAITING)
 295                 len += sprintf(buffer + len, "\t***** Conn in RX_CONN_MAKECALL_WAITING state *****\n");
 296 #ifdef RX_ENABLE_LOCKS
 297             len += sprintf(buffer + len, "\tcall_lock=%d, call_cv=%d, data_lock=%d, refCount=%d\n",
 298                            sep->conn_call_lock, sep->conn_call_cv,
 299                            sep->conn_data_lock, sep->refCount);
 300 #endif /* RX_ENABLE_LOCKS */
 301         }
 302     }
 303
 304     if (offset >= len) {
 305         *start = buffer;
 306         *eof = 1;
 307         return 0;
 308     }
 309     *start = buffer + offset;
 310     if ((len -= offset) > count)
 311         return count;
 312     *eof = 1;
 313     return len;
 314 }
 315
 316 int
 317 servicesproc_read(char *buffer, char **start, off_t offset, int count,
 318               int *eof, void *data)
 319 {
 320     int len, i, j;
 321     struct rx_service *sentry;
 322
 323     len = 0;
 324     for (i = 0, j = 0; i < RX_MAX_SERVICES; i++) {
 325         if ((sentry = rx_services[i])) {
 326             j++;
 327             len += sprintf(buffer + len,
 328                            "\t%lx: serviceId=%d, port=%d, serviceName=%s, socket=0x%lx\n",
 329                            (unsigned long)sentry, sentry->serviceId, sentry->servicePort,
 330                            sentry->serviceName, (unsigned long)sentry->socket);
 331             len += sprintf(buffer + len,
 332                            "\t\tnSecObj=%d, nReqRunning=%d, maxProcs=%d, minProcs=%d, connDeadTime=%d, idleDeadTime=%d\n",
 333                            sentry->nSecurityObjects, sentry->nRequestsRunning,
 334                            sentry->maxProcs, sentry->minProcs,
 335                            sentry->connDeadTime, sentry->idleDeadTime);
 336         }
 337     }
 338
 339     if (offset >= len) {
 340         *start = buffer;
 341         *eof = 1;
 342         return 0;
 343     }
 344     *start = buffer + offset;
 345     if ((len -= offset) > count)
 346         return count;
 347     *eof = 1;
 348     return len;
 349 }
 350
 351 int
 352 callproc_read(char *buffer, char **start, off_t offset, int count,
 353               int *eof, void *data)
 354 {
 355     int len, i, j, k;
 356     struct rx_connection *sep;
 357
 358     len = 0;
 359     for (i = 0, j = 0; i < 256; i++) {
 360         for (sep = rx_connHashTable[i]; sep; sep = sep->next) {
 361             for (k = 0; k < RX_MAXCALLS; k++) {
 362                 struct rx_call *call = sep->call[k];
 363                 if (call) {
 364                     j++;
 365                     len += sprintf(buffer + len,
 366                                    "%lx: conn=0x%lx, qiheader(0x%lx:0x%lx), tq(0x%lx:0x%lx), rq(0x%lx:0x%lx)\n",
 367                                    (unsigned long)call, (unsigned long)call->conn,
 368                                    (unsigned long)call->queue_item_header.prev,
 369                                    (unsigned long)call->queue_item_header.next,
 370                                    (unsigned long)call->tq.prev, (unsigned long)call->tq.next,
 371                                    (unsigned long)call->rq.prev, (unsigned long)call->rq.next);
 372                     len += sprintf(buffer + len,
 373                                    "\t: curvec=%d, curpos=%lx, nLeft=%d, nFree=%d, currPacket=0x%lx, callNumber=0x%lx\n",
 374                                    call->curvec, (unsigned long)call->curpos, call->nLeft,
 375                                    call->nFree, (unsigned long)call->currentPacket,
 376                                    (unsigned long)call->callNumber);
 377                     len += sprintf(buffer + len,
 378                                    "\t: channel=%d, state=0x%x, mode=0x%x, flags=0x%x, localStatus=0x%x, remStatus=0x%x\n",
 379                                    call->channel, call->state, call->mode,
 380                                    call->flags, call->localStatus,
 381                                    call->remoteStatus);
 382                     len += sprintf(buffer + len,
 383                                    "\t: error=%d, timeout=0x%x, rnext=0x%x, rprev=0x%x, rwind=0x%x, tfirst=0x%x, tnext=0x%x\n",
 384                                    call->error, call->timeout, call->rnext,
 385                                    call->rprev, call->rwind, call->tfirst,
 386                                    call->tnext);
 387                     len += sprintf(buffer + len,
 388                                    "\t: twind=%d, resendEvent=0x%lx, timeoutEvent=0x%lx, keepAliveEvent=0x%lx, delayedAckEvent=0x%lx\n",
 389                                    call->twind, (unsigned long)call->resendEvent,
 390                                    (unsigned long)call->timeoutEvent,
 391                                    (unsigned long)call->keepAliveEvent,
 392                                    (unsigned long)call->delayedAckEvent);
 393                     len += sprintf(buffer + len,
 394                                    "\t: lastSendTime=0x%x, lastReceiveTime=0x%x, lastAcked=0x%x, startTime=0x%x, startWait=0x%x\n",
 395                                    call->lastSendTime, call->lastReceiveTime,
 396                                    call->lastAcked, call->startTime.sec,
 397                                    call->startWait);
 398                     if (call->flags & RX_CALL_WAIT_PROC)
 399                         len += sprintf(buffer + len,
 400                                        "\t******** Call in RX_CALL_WAIT_PROC state **********\n");
 401                     if (call->flags & RX_CALL_WAIT_WINDOW_ALLOC)
 402                         len += sprintf(buffer + len,
 403                                        "\t******** Call in RX_CALL_WAIT_WINDOW_ALLOC state **********\n");
 404                     if (call->flags & RX_CALL_READER_WAIT)
 405                         len += sprintf(buffer + len,
 406                                        "\t******** Conn in RX_CALL_READER_WAIT state **********\n");
 407                     if (call->flags & RX_CALL_WAIT_PACKETS)
 408                         len += sprintf(buffer + len,
 409                                        "\t******** Conn in RX_CALL_WAIT_PACKETS state **********\n");
 410 #ifdef RX_ENABLE_LOCKS
 411                     len += sprintf(buffer + len,
 412                                    "\t: lock=0x%x, cv_twind=0x%x, cv_rq=0x%x, refCount= %d\n",
 413                                    call->lock, call->cv_twind, call->cv_rq,
 414                                    call->refCount);
 415 #endif /* RX_ENABLE_LOCKS */
 416                     len += sprintf(buffer + len, "\t: MTU=%d\n", call->MTU);
 417                 }
 418             }
 419         }
 420     }
 421
 422     if (offset >= len) {
 423         *start = buffer;
 424         *eof = 1;
 425         return 0;
 426     }
 427     *start = buffer + offset;
 428     if ((len -= offset) > count)
 429         return count;
 430     *eof = 1;
 431     return len;
 432 }
 433
 434 static struct proc_dir_entry *openafs_procfs;
 435 #if defined(NEED_IOCTL32) && !defined(HAVE_COMPAT_IOCTL)
 436 static int ioctl32_done;
 437 #endif
 438
 439 #ifdef AFS_LINUX24_ENV
 440 static int
 441 afsproc_init(void)
 442 {
 443     struct proc_dir_entry *entry1;
 444     struct proc_dir_entry *entry;
 445
 446     openafs_procfs = proc_mkdir(PROC_FSDIRNAME, proc_root_fs);
 447     entry1 = create_proc_entry(PROC_SYSCALL_NAME, 0666, openafs_procfs);
 448
 449     entry1->proc_fops = &afs_syscall_fops;
 450
 451     entry1->owner = THIS_MODULE;
 452
 453     entry = create_proc_read_entry(PROC_CELLSERVDB_NAME, (S_IFREG|S_IRUGO), openafs_procfs, csdbproc_read, NULL);
 454
 455     entry = create_proc_read_entry(PROC_PEER_NAME, (S_IFREG|S_IRUGO), openafs_procfs, peerproc_read, NULL);
 456
 457     entry = create_proc_read_entry(PROC_CONN_NAME, (S_IFREG|S_IRUGO), openafs_procfs, connproc_read, NULL);
 458
 459     entry = create_proc_read_entry(PROC_CALL_NAME, (S_IFREG|S_IRUGO), openafs_procfs, connproc_read, NULL);
 460
 461     entry = create_proc_read_entry(PROC_RX_NAME, (S_IFREG|S_IRUGO), openafs_procfs, rxproc_read, NULL);
 462
 463     entry = create_proc_read_entry(PROC_SERVICES_NAME, (S_IFREG|S_IRUGO), openafs_procfs, servicesproc_read, NULL);
 464
 465     entry = create_proc_read_entry(PROC_RXSTATS_NAME, (S_IFREG|S_IRUGO), openafs_procfs, rxstatsproc_read, NULL);
 466 #if defined(NEED_IOCTL32) && !defined(HAVE_COMPAT_IOCTL)
 467     if (register_ioctl32_conversion(VIOC_SYSCALL32, NULL) == 0)
 468             ioctl32_done = 1;
 469 #endif
 470
 471     return 0;
 472 }
 473
 474 static void
 475 afsproc_exit(void)
 476 {
 477     remove_proc_entry(PROC_RXSTATS_NAME, openafs_procfs);
 478     remove_proc_entry(PROC_SERVICES_NAME, openafs_procfs);
 479     remove_proc_entry(PROC_RX_NAME, openafs_procfs);
 480     remove_proc_entry(PROC_CALL_NAME, openafs_procfs);
 481     remove_proc_entry(PROC_CONN_NAME, openafs_procfs);
 482     remove_proc_entry(PROC_PEER_NAME, openafs_procfs);
 483     remove_proc_entry(PROC_CELLSERVDB_NAME, openafs_procfs);
 484     remove_proc_entry(PROC_SYSCALL_NAME, openafs_procfs);
 485     remove_proc_entry(PROC_FSDIRNAME, proc_root_fs);
 486 #if defined(NEED_IOCTL32) && !defined(HAVE_COMPAT_IOCTL)
 487     if (ioctl32_done)
 488             unregister_ioctl32_conversion(VIOC_SYSCALL32);
 489 #endif
 490 }
 491 #endif
 492
 493 extern asmlinkage long
 494 afs_syscall(long syscall, long parm1, long parm2, long parm3, long parm4);
 495
 496 static int
 497 afs_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 498           unsigned long arg)
 499 {
 500
 501     struct afsprocdata sysargs;
 502 #ifdef NEED_IOCTL32
 503     struct afsprocdata32 sysargs32;
 504 #endif
 505
 506     if (cmd != VIOC_SYSCALL && cmd != VIOC_SYSCALL32) return -EINVAL;
 507
 508 #ifdef NEED_IOCTL32
 509 #ifdef AFS_SPARC64_LINUX24_ENV
 510     if (current->thread.flags & SPARC_FLAG_32BIT)
 511 #elif defined(AFS_SPARC64_LINUX20_ENV)
 512     if (current->tss.flags & SPARC_FLAG_32BIT)
 513 #elif defined(AFS_AMD64_LINUX20_ENV)
 514 #ifdef AFS_LINUX26_ENV
 515     if (test_thread_flag(TIF_IA32))
 516 #else
 517     if (current->thread.flags & THREAD_IA32)
 518 #endif
 519 #elif defined(AFS_PPC64_LINUX20_ENV)
 520 #ifdef AFS_PPC64_LINUX26_ENV
 521     if (current->thread_info->flags & _TIF_32BIT)
 522 #else /*Linux 2.6 */
 523     if (current->thread.flags & PPC_FLAG_32BIT)
 524 #endif
 525 #elif defined(AFS_S390X_LINUX26_ENV)
 526     if (test_thread_flag(TIF_31BIT))
 527 #elif defined(AFS_S390X_LINUX20_ENV)
 528     if (current->thread.flags & S390_FLAG_31BIT)
 529 #else
 530 #error Not done for this linux type
 531 #endif
 532     {
 533         if (copy_from_user(&sysargs32, (void *)arg,
 534                            sizeof(struct afsprocdata32)))
 535             return -EFAULT;
 536
 537         return afs_syscall((unsigned long)sysargs32.syscall,
 538                            (unsigned long)sysargs32.param1,
 539                            (unsigned long)sysargs32.param2,
 540                            (unsigned long)sysargs32.param3,
 541                            (unsigned long)sysargs32.param4);
 542     } else
 543 #endif
 544     {
 545         if (copy_from_user(&sysargs, (void *)arg, sizeof(struct afsprocdata)))
 546             return -EFAULT;
 547
 548         return afs_syscall(sysargs.syscall, sysargs.param1,
 549                            sysargs.param2, sysargs.param3, sysargs.param4);
 550     }
 551 }
 552
 553 #if defined(HAVE_UNLOCKED_IOCTL) || defined(HAVE_COMPAT_IOCTL)
 554 static long afs_unlocked_ioctl(struct file *file, unsigned int cmd,
 555                                unsigned long arg) {
 556     return afs_ioctl(FILE_INODE(file), file, cmd, arg);
 557 }
 558 #endif
 559
 560 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 561 int __init
 562 afs_init(void)
 563 #else
 564 int
 565 init_module(void)
 566 #endif
 567 {
 568     int e;
 569     RWLOCK_INIT(&afs_xosi, "afs_xosi");
 570
 571 #if !defined(AFS_LINUX24_ENV)
 572     /* obtain PAGE_OFFSET value */
 573     afs_linux_page_offset = get_page_offset();
 574
 575 #ifndef AFS_S390_LINUX22_ENV
 576     if (afs_linux_page_offset == 0) {
 577         /* couldn't obtain page offset so can't continue */
 578         printf("afs: Unable to obtain PAGE_OFFSET. Exiting..");
 579         return -EIO;
 580     }
 581 #endif /* AFS_S390_LINUX22_ENV */
 582 #endif /* !defined(AFS_LINUX24_ENV) */
 583
 584     osi_Init();
 585
 586     e = osi_syscall_init();
 587     if (e) return e;
 588     register_filesystem(&afs_fs_type);
 589     osi_sysctl_init();
 590 #ifdef AFS_LINUX24_ENV
 591     afsproc_init();
 592 #endif
 593
 594     return 0;
 595 }
 596
 597 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 598 void __exit
 599 afs_cleanup(void)
 600 #else
 601 void
 602 cleanup_module(void)
 603 #endif
 604 {
 605     osi_sysctl_clean();
 606     osi_syscall_clean();
 607     unregister_filesystem(&afs_fs_type);
 608
 609     osi_linux_free_inode_pages();       /* Invalidate all pages using AFS inodes. */
 610     osi_linux_free_afs_memory();
 611
 612 #ifdef AFS_LINUX24_ENV
 613     afsproc_exit();
 614 #endif
 615     return;
 616 }
 617
 618 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 619 module_init(afs_init);
 620 module_exit(afs_cleanup);
 621 #endif
 622
 623
 624 #if !defined(AFS_LINUX24_ENV)
 625 static long
 626 get_page_offset(void)
 627 {
 628 #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)
 629     return PAGE_OFFSET;
 630 #else
 631     struct task_struct *p, *q;
 632
 633     /* search backward thru the circular list */
 634 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 635     read_lock(&tasklist_lock);
 636 #endif
 637     /* search backward thru the circular list */
 638 #ifdef DEFINED_PREV_TASK
 639     for (q = current; p = q; q = prev_task(p)) {
 640 #else
 641     for (p = current; p; p = p->prev_task) {
 642 #endif
 643         if (p->pid == 1) {
 644 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 645             read_unlock(&tasklist_lock);
 646 #endif
 647             return p->addr_limit.seg;
 648         }
 649     }
 650
 651 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 652     read_unlock(&tasklist_lock);
 653 #endif
 654     return 0;
 655 #endif
 656 }
 657 #endif /* !AFS_LINUX24_ENV */