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 #ifdef HAVE_KERNEL_LINUX_SEQ_FILE_H
  38 #include <linux/seq_file.h>
  39 #endif
  40
  41 extern struct file_system_type afs_fs_type;
  42
  43 #if !defined(AFS_LINUX24_ENV)
  44 static long get_page_offset(void);
  45 #endif
  46
  47 #if defined(AFS_LINUX24_ENV)
  48 DECLARE_MUTEX(afs_global_lock);
  49 #else
  50 struct semaphore afs_global_lock = MUTEX;
  51 #endif
  52 int afs_global_owner = 0;
  53 #if !defined(AFS_LINUX24_ENV)
  54 unsigned long afs_linux_page_offset = 0;        /* contains the PAGE_OFFSET value */
  55 #endif
  56
  57 static inline int afs_ioctl(struct inode *, struct file *, unsigned int,
  58                      unsigned long);
  59 #if defined(HAVE_UNLOCKED_IOCTL) || defined(HAVE_COMPAT_IOCTL)
  60 static long afs_unlocked_ioctl(struct file *, unsigned int, unsigned long);
  61 #endif
  62
  63 static struct file_operations afs_syscall_fops = {
  64 #ifdef HAVE_UNLOCKED_IOCTL
  65     .unlocked_ioctl = afs_unlocked_ioctl,
  66 #else
  67     .ioctl = afs_ioctl,
  68 #endif
  69 #ifdef HAVE_COMPAT_IOCTL
  70     .compat_ioctl = afs_unlocked_ioctl,
  71 #endif
  72 };
  73
  74 #ifdef HAVE_KERNEL_LINUX_SEQ_FILE_H
  75 static void *c_start(struct seq_file *m, loff_t *pos)
  76 {
  77         struct afs_q *cq, *tq;
  78         loff_t n = 0;
  79
  80         ObtainReadLock(&afs_xcell);
  81         for (cq = CellLRU.next; cq != &CellLRU; cq = tq) {
  82                 tq = QNext(cq);
  83
  84                 if (n++ == *pos)
  85                         break;
  86         }
  87         if (cq == &CellLRU)
  88                 return NULL;
  89
  90         return cq;
  91 }
  92
  93 static void *c_next(struct seq_file *m, void *p, loff_t *pos)
  94 {
  95         struct afs_q *cq = p, *tq;
  96
  97         (*pos)++;
  98         tq = QNext(cq);
  99
 100         if (tq == &CellLRU)
 101                 return NULL;
 102
 103         return tq;
 104 }
 105
 106 static void c_stop(struct seq_file *m, void *p)
 107 {
 108         ReleaseReadLock(&afs_xcell);
 109 }
 110
 111 static int c_show(struct seq_file *m, void *p)
 112 {
 113         struct afs_q *cq = p;
 114         struct cell *tc = QTOC(cq);
 115         int j;
 116
 117         seq_printf(m, ">%s #(%d/%d)\n", tc->cellName,
 118                    tc->cellNum, tc->cellIndex);
 119
 120         for (j = 0; j < MAXCELLHOSTS; j++) {
 121                 afs_uint32 addr;
 122
 123                 if (!tc->cellHosts[j]) break;
 124
 125                 addr = tc->cellHosts[j]->addr->sa_ip;
 126                 seq_printf(m, "%u.%u.%u.%u #%u.%u.%u.%u\n",
 127                            NIPQUAD(addr), NIPQUAD(addr));
 128         }
 129
 130         return 0;
 131 }
 132
 133 static struct seq_operations afs_csdb_op = {
 134         .start          = c_start,
 135         .next           = c_next,
 136         .stop           = c_stop,
 137         .show           = c_show,
 138 };
 139
 140 static int afs_csdb_open(struct inode *inode, struct file *file)
 141 {
 142         return seq_open(file, &afs_csdb_op);
 143 }
 144
 145 static struct file_operations afs_csdb_operations = {
 146         .open           = afs_csdb_open,
 147         .read           = seq_read,
 148         .llseek         = seq_lseek,
 149         .release        = seq_release,
 150 };
 151
 152 #else /* HAVE_KERNEL_LINUX_SEQ_FILE_H */
 153
 154 int
 155 csdbproc_info(char *buffer, char **start, off_t offset, int
 156 length)
 157 {
 158     int len = 0;
 159     off_t pos = 0;
 160     int cnt;
 161     struct afs_q *cq, *tq;
 162     struct cell *tc;
 163     char tbuffer[16];
 164     /* 90 - 64 cellname, 10 for 32 bit num and index, plus
 165        decor */
 166     char temp[91];
 167     afs_uint32 addr;
 168
 169     ObtainReadLock(&afs_xcell);
 170
 171     for (cq = CellLRU.next; cq != &CellLRU; cq = tq) {
 172         tc = QTOC(cq); tq = QNext(cq);
 173
 174         pos += 90;
 175
 176         if (pos <= offset) {
 177             len = 0;
 178         } else {
 179             sprintf(temp, ">%s #(%d/%d)\n", tc->cellName,
 180                     tc->cellNum, tc->cellIndex);
 181             sprintf(buffer + len, "%-89s\n", temp);
 182             len += 90;
 183             if (pos >= offset+length) {
 184                 ReleaseReadLock(&afs_xcell);
 185                 goto done;
 186             }
 187         }
 188
 189         for (cnt = 0; cnt < MAXCELLHOSTS; cnt++) {
 190             if (!tc->cellHosts[cnt]) break;
 191             pos += 90;
 192             if (pos <= offset) {
 193                 len = 0;
 194             } else {
 195                 addr = ntohl(tc->cellHosts[cnt]->addr->sa_ip);
 196                 sprintf(tbuffer, "%d.%d.%d.%d",
 197                         (int)((addr>>24) & 0xff),
 198 (int)((addr>>16) & 0xff),
 199                         (int)((addr>>8)  & 0xff), (int)( addr & 0xff));
 200                 sprintf(temp, "%s #%s\n", tbuffer, tbuffer);
 201                 sprintf(buffer + len, "%-89s\n", temp);
 202                 len += 90;
 203                 if (pos >= offset+length) {
 204                     ReleaseReadLock(&afs_xcell);
 205                     goto done;
 206                 }
 207             }
 208         }
 209     }
 210
 211     ReleaseReadLock(&afs_xcell);
 212
 213 done:
 214     *start = buffer + len - (pos - offset);
 215     len = pos - offset;
 216     if (len > length)
 217         len = length;
 218     return len;
 219 }
 220
 221 #endif /* HAVE_KERNEL_LINUX_SEQ_FILE_H */
 222
 223 int
 224 peerproc_read(char *buffer, char **start, off_t offset, int count,
 225               int *eof, void *data)
 226 {
 227     int len, i, j;
 228     struct rx_peer *sep;
 229
 230     len = 0;
 231     for (i = 0, j = 0; i < 256; i++) {
 232         for (sep = rx_peerHashTable[i]; sep; sep = sep->next, j++) {
 233             len += sprintf(buffer + len, "%lx: next=0x%lx, host=0x%x, ", (unsigned long)sep,
 234                    (unsigned long)sep->next, sep->host);
 235             len += sprintf(buffer + len, "ifMTU=%d, natMTU=%d, maxMTU=%d\n", sep->ifMTU,
 236                    sep->natMTU, sep->maxMTU);
 237             len += sprintf(buffer + len, "\trtt=%d:%d, timeout(%d:%d), nSent=%d, reSends=%d\n",
 238                    sep->rtt, sep->rtt_dev, sep->timeout.sec,
 239                    sep->timeout.usec, sep->nSent, sep->reSends);
 240             len += sprintf(buffer + len, "\trefCount=%d, port=%d, idleWhen=0x%x\n",
 241                    sep->refCount, sep->port, sep->idleWhen);
 242             len += sprintf(buffer + len, "\tCongestionQueue (0x%lx:0x%lx), inPacketSkew=0x%x, outPacketSkew=0x%x\n",
 243                  (unsigned long)sep->congestionQueue.prev, (unsigned long)sep->congestionQueue.next,
 244                  sep->inPacketSkew, sep->outPacketSkew);
 245 #ifdef RX_ENABLE_LOCKS
 246             len += sprintf(buffer + len, "\tpeer_lock=%d\n", sep->peer_lock);
 247 #endif /* RX_ENABLE_LOCKS */
 248         }
 249     }
 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 rxstatsproc_read(char *buffer, char **start, off_t offset, int count,
 265               int *eof, void *data)
 266 {
 267     int len, i;
 268
 269     len = 0;
 270     len += sprintf(buffer + len, "packetRequests = %d\n", rx_stats.packetRequests);
 271     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_RECEIVE,
 272            rx_stats.receivePktAllocFailures);
 273     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_SEND,
 274            rx_stats.sendPktAllocFailures);
 275     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_SPECIAL,
 276            rx_stats.specialPktAllocFailures);
 277     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_RECV_CBUF,
 278            rx_stats.receiveCbufPktAllocFailures);
 279     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_SEND_CBUF,
 280            rx_stats.sendCbufPktAllocFailures);
 281     len += sprintf(buffer + len, "socketGreedy = %d\n", rx_stats.socketGreedy);
 282     len += sprintf(buffer + len, "bogusPacketOnRead = %d\n", rx_stats.bogusPacketOnRead);
 283     len += sprintf(buffer + len, "bogusHost = %d\n", rx_stats.bogusHost);
 284     len += sprintf(buffer + len, "noPacketOnRead = %d\n", rx_stats.noPacketOnRead);
 285     len += sprintf(buffer + len, "noPacketBuffersOnRead = %d\n",
 286            rx_stats.noPacketBuffersOnRead);
 287     len += sprintf(buffer + len, "selects = %d\n", rx_stats.selects);
 288     len += sprintf(buffer + len, "sendSelects = %d\n", rx_stats.sendSelects);
 289     for (i = 0; i < RX_N_PACKET_TYPES; i++)
 290         len += sprintf(buffer + len, "packetsRead[%d] = %d\n", i, rx_stats.packetsRead[i]);
 291     len += sprintf(buffer + len, "dataPacketsRead = %d\n", rx_stats.dataPacketsRead);
 292     len += sprintf(buffer + len, "ackPacketsRead = %d\n", rx_stats.ackPacketsRead);
 293     len += sprintf(buffer + len, "dupPacketsRead = %d\n", rx_stats.dupPacketsRead);
 294     len += sprintf(buffer + len, "spuriousPacketsRead = %d\n", rx_stats.spuriousPacketsRead);
 295     for (i = 0; i < RX_N_PACKET_TYPES; i++)
 296         len += sprintf(buffer + len, "packetsSent[%d] = %d\n", i, rx_stats.packetsSent[i]);
 297     len += sprintf(buffer + len, "ackPacketsSent = %d\n", rx_stats.ackPacketsSent);
 298     len += sprintf(buffer + len, "pingPacketsSent = %d\n", rx_stats.pingPacketsSent);
 299     len += sprintf(buffer + len, "abortPacketsSent = %d\n", rx_stats.abortPacketsSent);
 300     len += sprintf(buffer + len, "busyPacketsSent = %d\n", rx_stats.busyPacketsSent);
 301     len += sprintf(buffer + len, "dataPacketsSent = %d\n", rx_stats.dataPacketsSent);
 302     len += sprintf(buffer + len, "dataPacketsReSent = %d\n", rx_stats.dataPacketsReSent);
 303     len += sprintf(buffer + len, "dataPacketsPushed = %d\n", rx_stats.dataPacketsPushed);
 304     len += sprintf(buffer + len, "ignoreAckedPacket = %d\n", rx_stats.ignoreAckedPacket);
 305     len += sprintf(buffer + len, "totalRtt = %d sec, %d usec\n", rx_stats.totalRtt.sec,
 306            rx_stats.totalRtt.usec);
 307     len += sprintf(buffer + len, "minRtt = %d sec, %d usec\n", rx_stats.minRtt.sec,
 308            rx_stats.minRtt.usec);
 309     len += sprintf(buffer + len, "maxRtt = %d sec, %d usec\n", rx_stats.maxRtt.sec,
 310            rx_stats.maxRtt.usec);
 311     len += sprintf(buffer + len, "nRttSamples = %d\n", rx_stats.nRttSamples);
 312     len += sprintf(buffer + len, "nServerConns = %d\n", rx_stats.nServerConns);
 313     len += sprintf(buffer + len, "nClientConns = %d\n", rx_stats.nClientConns);
 314     len += sprintf(buffer + len, "nPeerStructs = %d\n", rx_stats.nPeerStructs);
 315     len += sprintf(buffer + len, "nCallStructs = %d\n", rx_stats.nCallStructs);
 316     len += sprintf(buffer + len, "nFreeCallStructs = %d\n", rx_stats.nFreeCallStructs);
 317     len += sprintf(buffer + len, "netSendFailures  = %d\n", rx_stats.netSendFailures);
 318     len += sprintf(buffer + len, "fatalErrors      = %d\n", rx_stats.fatalErrors);
 319
 320     if (offset >= len) {
 321         *start = buffer;
 322         *eof = 1;
 323         return 0;
 324     }
 325     *start = buffer + offset;
 326     if ((len -= offset) > count)
 327         return count;
 328     *eof = 1;
 329     return len;
 330 }
 331
 332 int
 333 rxproc_read(char *buffer, char **start, off_t offset, int count,
 334               int *eof, void *data)
 335 {
 336     int len, i;
 337
 338     len = 0;
 339     len += sprintf(buffer + len, "rx_extraQuota = %d\n", rx_extraQuota);
 340     len += sprintf(buffer + len, "rx_extraPackets = %d\n", rx_extraPackets);
 341     len += sprintf(buffer + len, "rx_stackSize = %d\n", rx_stackSize);
 342     len += sprintf(buffer + len, "rx_connDeadTime = %d\n", rx_connDeadTime);
 343     len += sprintf(buffer + len, "rx_idleConnectionTime = %d\n", rx_idleConnectionTime);
 344     len += sprintf(buffer + len, "rx_idlePeerTime = %d\n", rx_idlePeerTime);
 345     len += sprintf(buffer + len, "rx_initSendWindow = %d\n", rx_initSendWindow);
 346     len += sprintf(buffer + len, "rxi_nSendFrags = %d\n", rxi_nSendFrags);
 347     len += sprintf(buffer + len, "rx_nPackets = %d\n", rx_nPackets);
 348     len += sprintf(buffer + len, "rx_nFreePackets = %d\n", rx_nFreePackets);
 349     len += sprintf(buffer + len, "rx_socket = 0x%lx\n", (unsigned long)rx_socket);
 350     len += sprintf(buffer + len, "rx_Port = %d\n", rx_port);
 351     for (i = 0; i < RX_N_PACKET_CLASSES; i++)
 352         len += sprintf(buffer + len, "\trx_packetQuota[%d] = %d\n", i, rx_packetQuota[i]);
 353
 354     len += sprintf(buffer + len, "rx_nextCid = 0x%x\n", rx_nextCid);
 355     len += sprintf(buffer + len, "rx_epoch = 0u%u\n", rx_epoch);
 356     len += sprintf(buffer + len, "rx_waitingForPackets = %x\n", rx_waitingForPackets);
 357     len += sprintf(buffer + len, "rxi_nCalls = %d\n", rxi_nCalls);
 358     len += sprintf(buffer + len, "rxi_dataQuota = %d\n", rxi_dataQuota);
 359     len += sprintf(buffer + len, "rxi_availProcs = %d\n", rxi_availProcs);
 360     len += sprintf(buffer + len, "rxi_totalMin = %d\n", rxi_totalMin);
 361     len += sprintf(buffer + len, "rxi_minDeficit = %d\n", rxi_minDeficit);
 362
 363     len += sprintf(buffer + len, "rxevent_nFree = %d\nrxevent_nPosted = %d\n", rxevent_nFree, rxevent_nPosted);
 364
 365     if (offset >= len) {
 366         *start = buffer;
 367         *eof = 1;
 368         return 0;
 369     }
 370     *start = buffer + offset;
 371     if ((len -= offset) > count)
 372         return count;
 373     *eof = 1;
 374     return len;
 375 }
 376
 377 int
 378 connproc_read(char *buffer, char **start, off_t offset, int count,
 379               int *eof, void *data)
 380 {
 381     int len, i, j;
 382     struct rx_connection *sep;
 383
 384     len = 0;
 385     for (i = 0, j = 0; i < 256; i++) {
 386         for (sep = rx_connHashTable[i]; sep; sep = sep->next, j++) {
 387             len += sprintf(buffer + len, "%lx: next=0x%lx, peer=0x%lx, epoch=0x%x, cid=0x%x, ackRate=%d\n",
 388                            (unsigned long)sep, (unsigned long)sep->next, (unsigned long)sep->peer,
 389                            sep->epoch, sep->cid, sep->ackRate);
 390             len += sprintf(buffer + len, "\tcall[%lx=%d, %lx=%d, %lx=%d, %lx=%d]\n",
 391                            (unsigned long)sep->call[0], sep->callNumber[0],
 392                            (unsigned long)sep->call[1], sep->callNumber[1],
 393                            (unsigned long)sep->call[2], sep->callNumber[2],
 394                            (unsigned long)sep->call[3], sep->callNumber[3]);
 395             len += sprintf(buffer + len, "\ttimeout=%d, flags=0x%x, type=0x%x, serviceId=%d, service=0x%lx, refCount=%d\n",
 396                            sep->timeout, sep->flags, sep->type,
 397                            sep->serviceId, (unsigned long)sep->service, sep->refCount);
 398             len += sprintf(buffer + len, "\tserial=%d, lastSerial=%d, secsUntilDead=%d, secsUntilPing=%d, secIndex=%d\n",
 399                            sep->serial, sep->lastSerial, sep->secondsUntilDead,
 400                            sep->secondsUntilPing, sep->securityIndex);
 401             len += sprintf(buffer + len, "\terror=%d, secObject=0x%lx, secData=0x%lx, secHeaderSize=%d, secmaxTrailerSize=%d\n",
 402                            sep->error, (unsigned long)sep->securityObject,
 403                            (unsigned long)sep->securityData,
 404                            sep->securityHeaderSize, sep->securityMaxTrailerSize);
 405             len += sprintf(buffer + len, "\tchallEvent=0x%lx, lastSendTime=0x%x, maxSerial=%d, hardDeadTime=%d\n",
 406                            (unsigned long)sep->challengeEvent, sep->lastSendTime,
 407                            sep->maxSerial, sep->hardDeadTime);
 408             if (sep->flags & RX_CONN_MAKECALL_WAITING)
 409                 len += sprintf(buffer + len, "\t***** Conn in RX_CONN_MAKECALL_WAITING state *****\n");
 410 #ifdef RX_ENABLE_LOCKS
 411             len += sprintf(buffer + len, "\tcall_lock=%d, call_cv=%d, data_lock=%d, refCount=%d\n",
 412                            sep->conn_call_lock, sep->conn_call_cv,
 413                            sep->conn_data_lock, sep->refCount);
 414 #endif /* RX_ENABLE_LOCKS */
 415         }
 416     }
 417
 418     if (offset >= len) {
 419         *start = buffer;
 420         *eof = 1;
 421         return 0;
 422     }
 423     *start = buffer + offset;
 424     if ((len -= offset) > count)
 425         return count;
 426     *eof = 1;
 427     return len;
 428 }
 429
 430 int
 431 servicesproc_read(char *buffer, char **start, off_t offset, int count,
 432               int *eof, void *data)
 433 {
 434     int len, i, j;
 435     struct rx_service *sentry;
 436
 437     len = 0;
 438     for (i = 0, j = 0; i < RX_MAX_SERVICES; i++) {
 439         if ((sentry = rx_services[i])) {
 440             j++;
 441             len += sprintf(buffer + len,
 442                            "\t%lx: serviceId=%d, port=%d, serviceName=%s, socket=0x%lx\n",
 443                            (unsigned long)sentry, sentry->serviceId, sentry->servicePort,
 444                            sentry->serviceName, (unsigned long)sentry->socket);
 445             len += sprintf(buffer + len,
 446                            "\t\tnSecObj=%d, nReqRunning=%d, maxProcs=%d, minProcs=%d, connDeadTime=%d, idleDeadTime=%d\n",
 447                            sentry->nSecurityObjects, sentry->nRequestsRunning,
 448                            sentry->maxProcs, sentry->minProcs,
 449                            sentry->connDeadTime, sentry->idleDeadTime);
 450         }
 451     }
 452
 453     if (offset >= len) {
 454         *start = buffer;
 455         *eof = 1;
 456         return 0;
 457     }
 458     *start = buffer + offset;
 459     if ((len -= offset) > count)
 460         return count;
 461     *eof = 1;
 462     return len;
 463 }
 464
 465 int
 466 callproc_read(char *buffer, char **start, off_t offset, int count,
 467               int *eof, void *data)
 468 {
 469     int len, i, j, k;
 470     struct rx_connection *sep;
 471
 472     len = 0;
 473     for (i = 0, j = 0; i < 256; i++) {
 474         for (sep = rx_connHashTable[i]; sep; sep = sep->next) {
 475             for (k = 0; k < RX_MAXCALLS; k++) {
 476                 struct rx_call *call = sep->call[k];
 477                 if (call) {
 478                     j++;
 479                     len += sprintf(buffer + len,
 480                                    "%lx: conn=0x%lx, qiheader(0x%lx:0x%lx), tq(0x%lx:0x%lx), rq(0x%lx:0x%lx)\n",
 481                                    (unsigned long)call, (unsigned long)call->conn,
 482                                    (unsigned long)call->queue_item_header.prev,
 483                                    (unsigned long)call->queue_item_header.next,
 484                                    (unsigned long)call->tq.prev, (unsigned long)call->tq.next,
 485                                    (unsigned long)call->rq.prev, (unsigned long)call->rq.next);
 486                     len += sprintf(buffer + len,
 487                                    "\t: curvec=%d, curpos=%lx, nLeft=%d, nFree=%d, currPacket=0x%lx, callNumber=0x%lx\n",
 488                                    call->curvec, (unsigned long)call->curpos, call->nLeft,
 489                                    call->nFree, (unsigned long)call->currentPacket,
 490                                    (unsigned long)call->callNumber);
 491                     len += sprintf(buffer + len,
 492                                    "\t: channel=%d, state=0x%x, mode=0x%x, flags=0x%x, localStatus=0x%x, remStatus=0x%x\n",
 493                                    call->channel, call->state, call->mode,
 494                                    call->flags, call->localStatus,
 495                                    call->remoteStatus);
 496                     len += sprintf(buffer + len,
 497                                    "\t: error=%d, timeout=0x%x, rnext=0x%x, rprev=0x%x, rwind=0x%x, tfirst=0x%x, tnext=0x%x\n",
 498                                    call->error, call->timeout, call->rnext,
 499                                    call->rprev, call->rwind, call->tfirst,
 500                                    call->tnext);
 501                     len += sprintf(buffer + len,
 502                                    "\t: twind=%d, resendEvent=0x%lx, timeoutEvent=0x%lx, keepAliveEvent=0x%lx, delayedAckEvent=0x%lx\n",
 503                                    call->twind, (unsigned long)call->resendEvent,
 504                                    (unsigned long)call->timeoutEvent,
 505                                    (unsigned long)call->keepAliveEvent,
 506                                    (unsigned long)call->delayedAckEvent);
 507                     len += sprintf(buffer + len,
 508                                    "\t: lastSendTime=0x%x, lastReceiveTime=0x%x, lastAcked=0x%x, startTime=0x%x, startWait=0x%x\n",
 509                                    call->lastSendTime, call->lastReceiveTime,
 510                                    call->lastAcked, call->startTime.sec,
 511                                    call->startWait);
 512                     if (call->flags & RX_CALL_WAIT_PROC)
 513                         len += sprintf(buffer + len,
 514                                        "\t******** Call in RX_CALL_WAIT_PROC state **********\n");
 515                     if (call->flags & RX_CALL_WAIT_WINDOW_ALLOC)
 516                         len += sprintf(buffer + len,
 517                                        "\t******** Call in RX_CALL_WAIT_WINDOW_ALLOC state **********\n");
 518                     if (call->flags & RX_CALL_READER_WAIT)
 519                         len += sprintf(buffer + len,
 520                                        "\t******** Conn in RX_CALL_READER_WAIT state **********\n");
 521                     if (call->flags & RX_CALL_WAIT_PACKETS)
 522                         len += sprintf(buffer + len,
 523                                        "\t******** Conn in RX_CALL_WAIT_PACKETS state **********\n");
 524 #ifdef RX_ENABLE_LOCKS
 525                     len += sprintf(buffer + len,
 526                                    "\t: lock=0x%x, cv_twind=0x%x, cv_rq=0x%x, refCount= %d\n",
 527                                    call->lock, call->cv_twind, call->cv_rq,
 528                                    call->refCount);
 529 #endif /* RX_ENABLE_LOCKS */
 530                     len += sprintf(buffer + len, "\t: MTU=%d\n", call->MTU);
 531                 }
 532             }
 533         }
 534     }
 535
 536     if (offset >= len) {
 537         *start = buffer;
 538         *eof = 1;
 539         return 0;
 540     }
 541     *start = buffer + offset;
 542     if ((len -= offset) > count)
 543         return count;
 544     *eof = 1;
 545     return len;
 546 }
 547
 548 static struct proc_dir_entry *openafs_procfs;
 549 #if defined(NEED_IOCTL32) && !defined(HAVE_COMPAT_IOCTL)
 550 static int ioctl32_done;
 551 #endif
 552
 553 #ifdef AFS_LINUX24_ENV
 554 static int
 555 afsproc_init(void)
 556 {
 557     struct proc_dir_entry *entry2;
 558     struct proc_dir_entry *entry1;
 559     struct proc_dir_entry *entry;
 560
 561     openafs_procfs = proc_mkdir(PROC_FSDIRNAME, proc_root_fs);
 562     entry1 = create_proc_entry(PROC_SYSCALL_NAME, 0666, openafs_procfs);
 563
 564     entry1->proc_fops = &afs_syscall_fops;
 565
 566     entry1->owner = THIS_MODULE;
 567
 568 #ifdef HAVE_KERNEL_LINUX_SEQ_FILE_H
 569     entry2 = create_proc_entry(PROC_CELLSERVDB_NAME, 0, openafs_procfs);
 570     if (entry2)
 571         entry2->proc_fops = &afs_csdb_operations;
 572 #else
 573     entry2 = create_proc_info_entry(PROC_CELLSERVDB_NAME, (S_IFREG|S_IRUGO), openafs_procfs, csdbproc_info);
 574 #endif
 575
 576     entry = create_proc_read_entry(PROC_PEER_NAME, (S_IFREG|S_IRUGO), openafs_procfs, peerproc_read, NULL);
 577
 578     entry = create_proc_read_entry(PROC_CONN_NAME, (S_IFREG|S_IRUGO), openafs_procfs, connproc_read, NULL);
 579
 580     entry = create_proc_read_entry(PROC_CALL_NAME, (S_IFREG|S_IRUGO), openafs_procfs, connproc_read, NULL);
 581
 582     entry = create_proc_read_entry(PROC_RX_NAME, (S_IFREG|S_IRUGO), openafs_procfs, rxproc_read, NULL);
 583
 584     entry = create_proc_read_entry(PROC_SERVICES_NAME, (S_IFREG|S_IRUGO), openafs_procfs, servicesproc_read, NULL);
 585
 586     entry = create_proc_read_entry(PROC_RXSTATS_NAME, (S_IFREG|S_IRUGO), openafs_procfs, rxstatsproc_read, NULL);
 587 #if defined(NEED_IOCTL32) && !defined(HAVE_COMPAT_IOCTL)
 588     if (register_ioctl32_conversion(VIOC_SYSCALL32, NULL) == 0)
 589             ioctl32_done = 1;
 590 #endif
 591
 592     return 0;
 593 }
 594
 595 static void
 596 afsproc_exit(void)
 597 {
 598     remove_proc_entry(PROC_RXSTATS_NAME, openafs_procfs);
 599     remove_proc_entry(PROC_SERVICES_NAME, openafs_procfs);
 600     remove_proc_entry(PROC_RX_NAME, openafs_procfs);
 601     remove_proc_entry(PROC_CALL_NAME, openafs_procfs);
 602     remove_proc_entry(PROC_CONN_NAME, openafs_procfs);
 603     remove_proc_entry(PROC_PEER_NAME, openafs_procfs);
 604     remove_proc_entry(PROC_CELLSERVDB_NAME, openafs_procfs);
 605     remove_proc_entry(PROC_SYSCALL_NAME, openafs_procfs);
 606     remove_proc_entry(PROC_FSDIRNAME, proc_root_fs);
 607 #if defined(NEED_IOCTL32) && !defined(HAVE_COMPAT_IOCTL)
 608     if (ioctl32_done)
 609             unregister_ioctl32_conversion(VIOC_SYSCALL32);
 610 #endif
 611 }
 612 #endif
 613
 614 extern asmlinkage long
 615 afs_syscall(long syscall, long parm1, long parm2, long parm3, long parm4);
 616
 617 static int
 618 afs_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 619           unsigned long arg)
 620 {
 621
 622     struct afsprocdata sysargs;
 623 #ifdef NEED_IOCTL32
 624     struct afsprocdata32 sysargs32;
 625 #endif
 626
 627     if (cmd != VIOC_SYSCALL && cmd != VIOC_SYSCALL32) return -EINVAL;
 628
 629 #ifdef NEED_IOCTL32
 630 #ifdef AFS_SPARC64_LINUX24_ENV
 631     if (current->thread.flags & SPARC_FLAG_32BIT)
 632 #elif defined(AFS_SPARC64_LINUX20_ENV)
 633     if (current->tss.flags & SPARC_FLAG_32BIT)
 634 #elif defined(AFS_AMD64_LINUX20_ENV)
 635 #ifdef AFS_LINUX26_ENV
 636     if (test_thread_flag(TIF_IA32))
 637 #else
 638     if (current->thread.flags & THREAD_IA32)
 639 #endif
 640 #elif defined(AFS_PPC64_LINUX20_ENV)
 641 #ifdef AFS_PPC64_LINUX26_ENV
 642     if (current->thread_info->flags & _TIF_32BIT)
 643 #else /*Linux 2.6 */
 644     if (current->thread.flags & PPC_FLAG_32BIT)
 645 #endif
 646 #elif defined(AFS_S390X_LINUX26_ENV)
 647     if (test_thread_flag(TIF_31BIT))
 648 #elif defined(AFS_S390X_LINUX20_ENV)
 649     if (current->thread.flags & S390_FLAG_31BIT)
 650 #else
 651 #error Not done for this linux type
 652 #endif
 653     {
 654         if (copy_from_user(&sysargs32, (void *)arg,
 655                            sizeof(struct afsprocdata32)))
 656             return -EFAULT;
 657
 658         return afs_syscall((unsigned long)sysargs32.syscall,
 659                            (unsigned long)sysargs32.param1,
 660                            (unsigned long)sysargs32.param2,
 661                            (unsigned long)sysargs32.param3,
 662                            (unsigned long)sysargs32.param4);
 663     } else
 664 #endif
 665     {
 666         if (copy_from_user(&sysargs, (void *)arg, sizeof(struct afsprocdata)))
 667             return -EFAULT;
 668
 669         return afs_syscall(sysargs.syscall, sysargs.param1,
 670                            sysargs.param2, sysargs.param3, sysargs.param4);
 671     }
 672 }
 673
 674 #if defined(HAVE_UNLOCKED_IOCTL) || defined(HAVE_COMPAT_IOCTL)
 675 static long afs_unlocked_ioctl(struct file *file, unsigned int cmd,
 676                                unsigned long arg) {
 677     return afs_ioctl(FILE_INODE(file), file, cmd, arg);
 678 }
 679 #endif
 680
 681 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 682 int __init
 683 afs_init(void)
 684 #else
 685 int
 686 init_module(void)
 687 #endif
 688 {
 689     int err;
 690     RWLOCK_INIT(&afs_xosi, "afs_xosi");
 691
 692 #if !defined(AFS_LINUX24_ENV)
 693     /* obtain PAGE_OFFSET value */
 694     afs_linux_page_offset = get_page_offset();
 695
 696 #ifndef AFS_S390_LINUX22_ENV
 697     if (afs_linux_page_offset == 0) {
 698         /* couldn't obtain page offset so can't continue */
 699         printf("afs: Unable to obtain PAGE_OFFSET. Exiting..");
 700         return -EIO;
 701     }
 702 #endif /* AFS_S390_LINUX22_ENV */
 703 #endif /* !defined(AFS_LINUX24_ENV) */
 704
 705     osi_Init();
 706
 707     err = osi_syscall_init();
 708     if (err)
 709         return err;
 710     err = afs_init_inodecache();
 711     if (err)
 712         return err;
 713     register_filesystem(&afs_fs_type);
 714     osi_sysctl_init();
 715 #ifdef AFS_LINUX24_ENV
 716     afsproc_init();
 717 #endif
 718
 719     return 0;
 720 }
 721
 722 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 723 void __exit
 724 afs_cleanup(void)
 725 #else
 726 void
 727 cleanup_module(void)
 728 #endif
 729 {
 730     osi_sysctl_clean();
 731     osi_syscall_clean();
 732     unregister_filesystem(&afs_fs_type);
 733
 734     afs_destroy_inodecache();
 735     osi_linux_free_afs_memory();
 736
 737 #ifdef AFS_LINUX24_ENV
 738     afsproc_exit();
 739 #endif
 740     return;
 741 }
 742
 743 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 744 MODULE_LICENSE("http://www.openafs.org/dl/license10.html");
 745 module_init(afs_init);
 746 module_exit(afs_cleanup);
 747 #endif
 748
 749
 750 #if !defined(AFS_LINUX24_ENV)
 751 static long
 752 get_page_offset(void)
 753 {
 754 #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)
 755     return PAGE_OFFSET;
 756 #else
 757     struct task_struct *p, *q;
 758
 759     /* search backward thru the circular list */
 760 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 761     read_lock(&tasklist_lock);
 762 #endif
 763     /* search backward thru the circular list */
 764 #ifdef DEFINED_PREV_TASK
 765     for (q = current; p = q; q = prev_task(p)) {
 766 #else
 767     for (p = current; p; p = p->prev_task) {
 768 #endif
 769         if (p->pid == 1) {
 770 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 771             read_unlock(&tasklist_lock);
 772 #endif
 773             return p->addr_limit.seg;
 774         }
 775     }
 776
 777 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 778     read_unlock(&tasklist_lock);
 779 #endif
 780     return 0;
 781 #endif
 782 }
 783 #endif /* !AFS_LINUX24_ENV */