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 #ifdef AFS_SPARC64_LINUX20_ENV
  30 #include <linux/ioctl32.h>
  31 #endif
  32
  33 #include <linux/proc_fs.h>
  34 #include <linux/slab.h>
  35 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
  36 #include <linux/init.h>
  37 #include <linux/sched.h>
  38 #include <linux/kernel.h>
  39 #endif
  40
  41 #ifdef HAVE_KERNEL_LINUX_SEQ_FILE_H
  42 #include <linux/seq_file.h>
  43 #endif
  44
  45 extern struct file_system_type afs_fs_type;
  46
  47 #if !defined(AFS_LINUX24_ENV)
  48 static long get_page_offset(void);
  49 #endif
  50
  51 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
  52 DEFINE_MUTEX(afs_global_lock);
  53 #elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
  54 DECLARE_MUTEX(afs_global_lock);
  55 #else
  56 struct semaphore afs_global_lock = MUTEX;
  57 #endif
  58 int afs_global_owner = 0;
  59 #if !defined(AFS_LINUX24_ENV)
  60 unsigned long afs_linux_page_offset = 0;        /* contains the PAGE_OFFSET value */
  61 #endif
  62
  63 static inline int afs_ioctl(struct inode *, struct file *, unsigned int,
  64                      unsigned long);
  65 #if defined(HAVE_UNLOCKED_IOCTL) || defined(HAVE_COMPAT_IOCTL)
  66 static long afs_unlocked_ioctl(struct file *, unsigned int, unsigned long);
  67 #endif
  68
  69 static struct file_operations afs_syscall_fops = {
  70 #ifdef HAVE_UNLOCKED_IOCTL
  71     .unlocked_ioctl = afs_unlocked_ioctl,
  72 #else
  73     .ioctl = afs_ioctl,
  74 #endif
  75 #ifdef HAVE_COMPAT_IOCTL
  76     .compat_ioctl = afs_unlocked_ioctl,
  77 #endif
  78 };
  79
  80 #ifdef HAVE_KERNEL_LINUX_SEQ_FILE_H
  81 static void *c_start(struct seq_file *m, loff_t *pos)
  82 {
  83         struct afs_q *cq, *tq;
  84         loff_t n = 0;
  85
  86         ObtainReadLock(&afs_xcell);
  87         for (cq = CellLRU.next; cq != &CellLRU; cq = tq) {
  88                 tq = QNext(cq);
  89
  90                 if (n++ == *pos)
  91                         break;
  92         }
  93         if (cq == &CellLRU)
  94                 return NULL;
  95
  96         return cq;
  97 }
  98
  99 static void *c_next(struct seq_file *m, void *p, loff_t *pos)
 100 {
 101         struct afs_q *cq = p, *tq;
 102
 103         (*pos)++;
 104         tq = QNext(cq);
 105
 106         if (tq == &CellLRU)
 107                 return NULL;
 108
 109         return tq;
 110 }
 111
 112 static void c_stop(struct seq_file *m, void *p)
 113 {
 114         ReleaseReadLock(&afs_xcell);
 115 }
 116
 117 static int c_show(struct seq_file *m, void *p)
 118 {
 119         struct afs_q *cq = p;
 120         struct cell *tc = QTOC(cq);
 121         int j;
 122
 123         seq_printf(m, ">%s #(%d/%d)\n", tc->cellName,
 124                    tc->cellNum, tc->cellIndex);
 125
 126         for (j = 0; j < MAXCELLHOSTS; j++) {
 127                 afs_uint32 addr;
 128
 129                 if (!tc->cellHosts[j]) break;
 130
 131                 addr = tc->cellHosts[j]->addr->sa_ip;
 132                 seq_printf(m, "%u.%u.%u.%u #%u.%u.%u.%u\n",
 133                            NIPQUAD(addr), NIPQUAD(addr));
 134         }
 135
 136         return 0;
 137 }
 138
 139 static struct seq_operations afs_csdb_op = {
 140         .start          = c_start,
 141         .next           = c_next,
 142         .stop           = c_stop,
 143         .show           = c_show,
 144 };
 145
 146 static int afs_csdb_open(struct inode *inode, struct file *file)
 147 {
 148         return seq_open(file, &afs_csdb_op);
 149 }
 150
 151 static struct file_operations afs_csdb_operations = {
 152         .open           = afs_csdb_open,
 153         .read           = seq_read,
 154         .llseek         = seq_lseek,
 155         .release        = seq_release,
 156 };
 157
 158 #else /* HAVE_KERNEL_LINUX_SEQ_FILE_H */
 159
 160 int
 161 csdbproc_info(char *buffer, char **start, off_t offset, int
 162 length)
 163 {
 164     int len = 0;
 165     off_t pos = 0;
 166     int cnt;
 167     struct afs_q *cq, *tq;
 168     struct cell *tc;
 169     char tbuffer[16];
 170     /* 90 - 64 cellname, 10 for 32 bit num and index, plus
 171        decor */
 172     char temp[91];
 173     afs_uint32 addr;
 174
 175     ObtainReadLock(&afs_xcell);
 176
 177     for (cq = CellLRU.next; cq != &CellLRU; cq = tq) {
 178         tc = QTOC(cq); tq = QNext(cq);
 179
 180         pos += 90;
 181
 182         if (pos <= offset) {
 183             len = 0;
 184         } else {
 185             sprintf(temp, ">%s #(%d/%d)\n", tc->cellName,
 186                     tc->cellNum, tc->cellIndex);
 187             sprintf(buffer + len, "%-89s\n", temp);
 188             len += 90;
 189             if (pos >= offset+length) {
 190                 ReleaseReadLock(&afs_xcell);
 191                 goto done;
 192             }
 193         }
 194
 195         for (cnt = 0; cnt < MAXCELLHOSTS; cnt++) {
 196             if (!tc->cellHosts[cnt]) break;
 197             pos += 90;
 198             if (pos <= offset) {
 199                 len = 0;
 200             } else {
 201                 addr = ntohl(tc->cellHosts[cnt]->addr->sa_ip);
 202                 sprintf(tbuffer, "%d.%d.%d.%d",
 203                         (int)((addr>>24) & 0xff),
 204 (int)((addr>>16) & 0xff),
 205                         (int)((addr>>8)  & 0xff), (int)( addr & 0xff));
 206                 sprintf(temp, "%s #%s\n", tbuffer, tbuffer);
 207                 sprintf(buffer + len, "%-89s\n", temp);
 208                 len += 90;
 209                 if (pos >= offset+length) {
 210                     ReleaseReadLock(&afs_xcell);
 211                     goto done;
 212                 }
 213             }
 214         }
 215     }
 216
 217     ReleaseReadLock(&afs_xcell);
 218
 219 done:
 220     *start = buffer + len - (pos - offset);
 221     len = pos - offset;
 222     if (len > length)
 223         len = length;
 224     return len;
 225 }
 226
 227 #endif /* HAVE_KERNEL_LINUX_SEQ_FILE_H */
 228
 229 int
 230 peerproc_read(char *buffer, char **start, off_t offset, int count,
 231               int *eof, void *data)
 232 {
 233     int len, i, j;
 234     struct rx_peer *sep;
 235
 236     len = 0;
 237     for (i = 0, j = 0; i < 256; i++) {
 238         for (sep = rx_peerHashTable[i]; sep; sep = sep->next, j++) {
 239             len += sprintf(buffer + len, "%lx: next=0x%lx, host=0x%x, ", (unsigned long)sep,
 240                    (unsigned long)sep->next, sep->host);
 241             len += sprintf(buffer + len, "ifMTU=%d, natMTU=%d, maxMTU=%d\n", sep->ifMTU,
 242                    sep->natMTU, sep->maxMTU);
 243             len += sprintf(buffer + len, "\trtt=%d:%d, timeout(%d:%d), nSent=%d, reSends=%d\n",
 244                    sep->rtt, sep->rtt_dev, sep->timeout.sec,
 245                    sep->timeout.usec, sep->nSent, sep->reSends);
 246             len += sprintf(buffer + len, "\trefCount=%d, port=%d, idleWhen=0x%x\n",
 247                    sep->refCount, sep->port, sep->idleWhen);
 248             len += sprintf(buffer + len, "\tCongestionQueue (0x%lx:0x%lx), inPacketSkew=0x%x, outPacketSkew=0x%x\n",
 249                  (unsigned long)sep->congestionQueue.prev, (unsigned long)sep->congestionQueue.next,
 250                  sep->inPacketSkew, sep->outPacketSkew);
 251 #ifdef RX_ENABLE_LOCKS
 252             len += sprintf(buffer + len, "\tpeer_lock=%d\n", sep->peer_lock);
 253 #endif /* RX_ENABLE_LOCKS */
 254         }
 255     }
 256
 257     if (offset >= len) {
 258         *start = buffer;
 259         *eof = 1;
 260         return 0;
 261     }
 262     *start = buffer + offset;
 263     if ((len -= offset) > count)
 264         return count;
 265     *eof = 1;
 266     return len;
 267 }
 268
 269 int
 270 rxstatsproc_read(char *buffer, char **start, off_t offset, int count,
 271               int *eof, void *data)
 272 {
 273     int len, i;
 274
 275     len = 0;
 276     len += sprintf(buffer + len, "packetRequests = %d\n", rx_stats.packetRequests);
 277     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_RECEIVE,
 278            rx_stats.receivePktAllocFailures);
 279     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_SEND,
 280            rx_stats.sendPktAllocFailures);
 281     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_SPECIAL,
 282            rx_stats.specialPktAllocFailures);
 283     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_RECV_CBUF,
 284            rx_stats.receiveCbufPktAllocFailures);
 285     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_SEND_CBUF,
 286            rx_stats.sendCbufPktAllocFailures);
 287     len += sprintf(buffer + len, "socketGreedy = %d\n", rx_stats.socketGreedy);
 288     len += sprintf(buffer + len, "bogusPacketOnRead = %d\n", rx_stats.bogusPacketOnRead);
 289     len += sprintf(buffer + len, "bogusHost = %d\n", rx_stats.bogusHost);
 290     len += sprintf(buffer + len, "noPacketOnRead = %d\n", rx_stats.noPacketOnRead);
 291     len += sprintf(buffer + len, "noPacketBuffersOnRead = %d\n",
 292            rx_stats.noPacketBuffersOnRead);
 293     len += sprintf(buffer + len, "selects = %d\n", rx_stats.selects);
 294     len += sprintf(buffer + len, "sendSelects = %d\n", rx_stats.sendSelects);
 295     for (i = 0; i < RX_N_PACKET_TYPES; i++)
 296         len += sprintf(buffer + len, "packetsRead[%d] = %d\n", i, rx_stats.packetsRead[i]);
 297     len += sprintf(buffer + len, "dataPacketsRead = %d\n", rx_stats.dataPacketsRead);
 298     len += sprintf(buffer + len, "ackPacketsRead = %d\n", rx_stats.ackPacketsRead);
 299     len += sprintf(buffer + len, "dupPacketsRead = %d\n", rx_stats.dupPacketsRead);
 300     len += sprintf(buffer + len, "spuriousPacketsRead = %d\n", rx_stats.spuriousPacketsRead);
 301     for (i = 0; i < RX_N_PACKET_TYPES; i++)
 302         len += sprintf(buffer + len, "packetsSent[%d] = %d\n", i, rx_stats.packetsSent[i]);
 303     len += sprintf(buffer + len, "ackPacketsSent = %d\n", rx_stats.ackPacketsSent);
 304     len += sprintf(buffer + len, "pingPacketsSent = %d\n", rx_stats.pingPacketsSent);
 305     len += sprintf(buffer + len, "abortPacketsSent = %d\n", rx_stats.abortPacketsSent);
 306     len += sprintf(buffer + len, "busyPacketsSent = %d\n", rx_stats.busyPacketsSent);
 307     len += sprintf(buffer + len, "dataPacketsSent = %d\n", rx_stats.dataPacketsSent);
 308     len += sprintf(buffer + len, "dataPacketsReSent = %d\n", rx_stats.dataPacketsReSent);
 309     len += sprintf(buffer + len, "dataPacketsPushed = %d\n", rx_stats.dataPacketsPushed);
 310     len += sprintf(buffer + len, "ignoreAckedPacket = %d\n", rx_stats.ignoreAckedPacket);
 311     len += sprintf(buffer + len, "totalRtt = %d sec, %d usec\n", rx_stats.totalRtt.sec,
 312            rx_stats.totalRtt.usec);
 313     len += sprintf(buffer + len, "minRtt = %d sec, %d usec\n", rx_stats.minRtt.sec,
 314            rx_stats.minRtt.usec);
 315     len += sprintf(buffer + len, "maxRtt = %d sec, %d usec\n", rx_stats.maxRtt.sec,
 316            rx_stats.maxRtt.usec);
 317     len += sprintf(buffer + len, "nRttSamples = %d\n", rx_stats.nRttSamples);
 318     len += sprintf(buffer + len, "nServerConns = %d\n", rx_stats.nServerConns);
 319     len += sprintf(buffer + len, "nClientConns = %d\n", rx_stats.nClientConns);
 320     len += sprintf(buffer + len, "nPeerStructs = %d\n", rx_stats.nPeerStructs);
 321     len += sprintf(buffer + len, "nCallStructs = %d\n", rx_stats.nCallStructs);
 322     len += sprintf(buffer + len, "nFreeCallStructs = %d\n", rx_stats.nFreeCallStructs);
 323     len += sprintf(buffer + len, "netSendFailures  = %d\n", rx_stats.netSendFailures);
 324     len += sprintf(buffer + len, "fatalErrors      = %d\n", rx_stats.fatalErrors);
 325
 326     if (offset >= len) {
 327         *start = buffer;
 328         *eof = 1;
 329         return 0;
 330     }
 331     *start = buffer + offset;
 332     if ((len -= offset) > count)
 333         return count;
 334     *eof = 1;
 335     return len;
 336 }
 337
 338 int
 339 rxproc_read(char *buffer, char **start, off_t offset, int count,
 340               int *eof, void *data)
 341 {
 342     int len, i;
 343
 344     len = 0;
 345     len += sprintf(buffer + len, "rx_extraQuota = %d\n", rx_extraQuota);
 346     len += sprintf(buffer + len, "rx_extraPackets = %d\n", rx_extraPackets);
 347     len += sprintf(buffer + len, "rx_stackSize = %d\n", rx_stackSize);
 348     len += sprintf(buffer + len, "rx_connDeadTime = %d\n", rx_connDeadTime);
 349     len += sprintf(buffer + len, "rx_idleConnectionTime = %d\n", rx_idleConnectionTime);
 350     len += sprintf(buffer + len, "rx_idlePeerTime = %d\n", rx_idlePeerTime);
 351     len += sprintf(buffer + len, "rx_initSendWindow = %d\n", rx_initSendWindow);
 352     len += sprintf(buffer + len, "rxi_nSendFrags = %d\n", rxi_nSendFrags);
 353     len += sprintf(buffer + len, "rx_nPackets = %d\n", rx_nPackets);
 354     len += sprintf(buffer + len, "rx_nFreePackets = %d\n", rx_nFreePackets);
 355     len += sprintf(buffer + len, "rx_socket = 0x%lx\n", (unsigned long)rx_socket);
 356     len += sprintf(buffer + len, "rx_Port = %d\n", rx_port);
 357     for (i = 0; i < RX_N_PACKET_CLASSES; i++)
 358         len += sprintf(buffer + len, "\trx_packetQuota[%d] = %d\n", i, rx_packetQuota[i]);
 359
 360     len += sprintf(buffer + len, "rx_nextCid = 0x%x\n", rx_nextCid);
 361     len += sprintf(buffer + len, "rx_epoch = 0u%u\n", rx_epoch);
 362     len += sprintf(buffer + len, "rx_waitingForPackets = %x\n", rx_waitingForPackets);
 363     len += sprintf(buffer + len, "rxi_nCalls = %d\n", rxi_nCalls);
 364     len += sprintf(buffer + len, "rxi_dataQuota = %d\n", rxi_dataQuota);
 365     len += sprintf(buffer + len, "rxi_availProcs = %d\n", rxi_availProcs);
 366     len += sprintf(buffer + len, "rxi_totalMin = %d\n", rxi_totalMin);
 367     len += sprintf(buffer + len, "rxi_minDeficit = %d\n", rxi_minDeficit);
 368
 369     len += sprintf(buffer + len, "rxevent_nFree = %d\nrxevent_nPosted = %d\n", rxevent_nFree, rxevent_nPosted);
 370
 371     if (offset >= len) {
 372         *start = buffer;
 373         *eof = 1;
 374         return 0;
 375     }
 376     *start = buffer + offset;
 377     if ((len -= offset) > count)
 378         return count;
 379     *eof = 1;
 380     return len;
 381 }
 382
 383 int
 384 connproc_read(char *buffer, char **start, off_t offset, int count,
 385               int *eof, void *data)
 386 {
 387     int len, i, j;
 388     struct rx_connection *sep;
 389
 390     len = 0;
 391     for (i = 0, j = 0; i < 256; i++) {
 392         for (sep = rx_connHashTable[i]; sep; sep = sep->next, j++) {
 393             len += sprintf(buffer + len, "%lx: next=0x%lx, peer=0x%lx, epoch=0x%x, cid=0x%x, ackRate=%d\n",
 394                            (unsigned long)sep, (unsigned long)sep->next, (unsigned long)sep->peer,
 395                            sep->epoch, sep->cid, sep->ackRate);
 396             len += sprintf(buffer + len, "\tcall[%lx=%d, %lx=%d, %lx=%d, %lx=%d]\n",
 397                            (unsigned long)sep->call[0], sep->callNumber[0],
 398                            (unsigned long)sep->call[1], sep->callNumber[1],
 399                            (unsigned long)sep->call[2], sep->callNumber[2],
 400                            (unsigned long)sep->call[3], sep->callNumber[3]);
 401             len += sprintf(buffer + len, "\ttimeout=%d, flags=0x%x, type=0x%x, serviceId=%d, service=0x%lx, refCount=%d\n",
 402                            sep->timeout, sep->flags, sep->type,
 403                            sep->serviceId, (unsigned long)sep->service, sep->refCount);
 404             len += sprintf(buffer + len, "\tserial=%d, lastSerial=%d, secsUntilDead=%d, secsUntilPing=%d, secIndex=%d\n",
 405                            sep->serial, sep->lastSerial, sep->secondsUntilDead,
 406                            sep->secondsUntilPing, sep->securityIndex);
 407             len += sprintf(buffer + len, "\terror=%d, secObject=0x%lx, secData=0x%lx, secHeaderSize=%d, secmaxTrailerSize=%d\n",
 408                            sep->error, (unsigned long)sep->securityObject,
 409                            (unsigned long)sep->securityData,
 410                            sep->securityHeaderSize, sep->securityMaxTrailerSize);
 411             len += sprintf(buffer + len, "\tchallEvent=0x%lx, lastSendTime=0x%x, maxSerial=%d, hardDeadTime=%d\n",
 412                            (unsigned long)sep->challengeEvent, sep->lastSendTime,
 413                            sep->maxSerial, sep->hardDeadTime);
 414             if (sep->flags & RX_CONN_MAKECALL_WAITING)
 415                 len += sprintf(buffer + len, "\t***** Conn in RX_CONN_MAKECALL_WAITING state *****\n");
 416 #ifdef RX_ENABLE_LOCKS
 417             len += sprintf(buffer + len, "\tcall_lock=%d, call_cv=%d, data_lock=%d, refCount=%d\n",
 418                            sep->conn_call_lock, sep->conn_call_cv,
 419                            sep->conn_data_lock, sep->refCount);
 420 #endif /* RX_ENABLE_LOCKS */
 421         }
 422     }
 423
 424     if (offset >= len) {
 425         *start = buffer;
 426         *eof = 1;
 427         return 0;
 428     }
 429     *start = buffer + offset;
 430     if ((len -= offset) > count)
 431         return count;
 432     *eof = 1;
 433     return len;
 434 }
 435
 436 int
 437 servicesproc_read(char *buffer, char **start, off_t offset, int count,
 438               int *eof, void *data)
 439 {
 440     int len, i, j;
 441     struct rx_service *sentry;
 442
 443     len = 0;
 444     for (i = 0, j = 0; i < RX_MAX_SERVICES; i++) {
 445         if ((sentry = rx_services[i])) {
 446             j++;
 447             len += sprintf(buffer + len,
 448                            "\t%lx: serviceId=%d, port=%d, serviceName=%s, socket=0x%lx\n",
 449                            (unsigned long)sentry, sentry->serviceId, sentry->servicePort,
 450                            sentry->serviceName, (unsigned long)sentry->socket);
 451             len += sprintf(buffer + len,
 452                            "\t\tnSecObj=%d, nReqRunning=%d, maxProcs=%d, minProcs=%d, connDeadTime=%d, idleDeadTime=%d\n",
 453                            sentry->nSecurityObjects, sentry->nRequestsRunning,
 454                            sentry->maxProcs, sentry->minProcs,
 455                            sentry->connDeadTime, sentry->idleDeadTime);
 456         }
 457     }
 458
 459     if (offset >= len) {
 460         *start = buffer;
 461         *eof = 1;
 462         return 0;
 463     }
 464     *start = buffer + offset;
 465     if ((len -= offset) > count)
 466         return count;
 467     *eof = 1;
 468     return len;
 469 }
 470
 471 int
 472 callproc_read(char *buffer, char **start, off_t offset, int count,
 473               int *eof, void *data)
 474 {
 475     int len, i, j, k;
 476     struct rx_connection *sep;
 477
 478     len = 0;
 479     for (i = 0, j = 0; i < 256; i++) {
 480         for (sep = rx_connHashTable[i]; sep; sep = sep->next) {
 481             for (k = 0; k < RX_MAXCALLS; k++) {
 482                 struct rx_call *call = sep->call[k];
 483                 if (call) {
 484                     j++;
 485                     len += sprintf(buffer + len,
 486                                    "%lx: conn=0x%lx, qiheader(0x%lx:0x%lx), tq(0x%lx:0x%lx), rq(0x%lx:0x%lx)\n",
 487                                    (unsigned long)call, (unsigned long)call->conn,
 488                                    (unsigned long)call->queue_item_header.prev,
 489                                    (unsigned long)call->queue_item_header.next,
 490                                    (unsigned long)call->tq.prev, (unsigned long)call->tq.next,
 491                                    (unsigned long)call->rq.prev, (unsigned long)call->rq.next);
 492                     len += sprintf(buffer + len,
 493                                    "\t: curvec=%d, curpos=%lx, nLeft=%d, nFree=%d, currPacket=0x%lx, callNumber=0x%lx\n",
 494                                    call->curvec, (unsigned long)call->curpos, call->nLeft,
 495                                    call->nFree, (unsigned long)call->currentPacket,
 496                                    (unsigned long)call->callNumber);
 497                     len += sprintf(buffer + len,
 498                                    "\t: channel=%d, state=0x%x, mode=0x%x, flags=0x%x, localStatus=0x%x, remStatus=0x%x\n",
 499                                    call->channel, call->state, call->mode,
 500                                    call->flags, call->localStatus,
 501                                    call->remoteStatus);
 502                     len += sprintf(buffer + len,
 503                                    "\t: error=%d, timeout=0x%x, rnext=0x%x, rprev=0x%x, rwind=0x%x, tfirst=0x%x, tnext=0x%x\n",
 504                                    call->error, call->timeout, call->rnext,
 505                                    call->rprev, call->rwind, call->tfirst,
 506                                    call->tnext);
 507                     len += sprintf(buffer + len,
 508                                    "\t: twind=%d, resendEvent=0x%lx, timeoutEvent=0x%lx, keepAliveEvent=0x%lx, delayedAckEvent=0x%lx\n",
 509                                    call->twind, (unsigned long)call->resendEvent,
 510                                    (unsigned long)call->timeoutEvent,
 511                                    (unsigned long)call->keepAliveEvent,
 512                                    (unsigned long)call->delayedAckEvent);
 513                     len += sprintf(buffer + len,
 514                                    "\t: lastSendTime=0x%x, lastReceiveTime=0x%x, lastAcked=0x%x, startTime=0x%x, startWait=0x%x\n",
 515                                    call->lastSendTime, call->lastReceiveTime,
 516                                    call->lastAcked, call->startTime.sec,
 517                                    call->startWait);
 518                     if (call->flags & RX_CALL_WAIT_PROC)
 519                         len += sprintf(buffer + len,
 520                                        "\t******** Call in RX_CALL_WAIT_PROC state **********\n");
 521                     if (call->flags & RX_CALL_WAIT_WINDOW_ALLOC)
 522                         len += sprintf(buffer + len,
 523                                        "\t******** Call in RX_CALL_WAIT_WINDOW_ALLOC state **********\n");
 524                     if (call->flags & RX_CALL_READER_WAIT)
 525                         len += sprintf(buffer + len,
 526                                        "\t******** Conn in RX_CALL_READER_WAIT state **********\n");
 527                     if (call->flags & RX_CALL_WAIT_PACKETS)
 528                         len += sprintf(buffer + len,
 529                                        "\t******** Conn in RX_CALL_WAIT_PACKETS state **********\n");
 530 #ifdef RX_ENABLE_LOCKS
 531                     len += sprintf(buffer + len,
 532                                    "\t: lock=0x%x, cv_twind=0x%x, cv_rq=0x%x, refCount= %d\n",
 533                                    call->lock, call->cv_twind, call->cv_rq,
 534                                    call->refCount);
 535 #endif /* RX_ENABLE_LOCKS */
 536                     len += sprintf(buffer + len, "\t: MTU=%d\n", call->MTU);
 537                 }
 538             }
 539         }
 540     }
 541
 542     if (offset >= len) {
 543         *start = buffer;
 544         *eof = 1;
 545         return 0;
 546     }
 547     *start = buffer + offset;
 548     if ((len -= offset) > count)
 549         return count;
 550     *eof = 1;
 551     return len;
 552 }
 553
 554 static struct proc_dir_entry *openafs_procfs;
 555 #if defined(NEED_IOCTL32) && !defined(HAVE_COMPAT_IOCTL)
 556 static int ioctl32_done;
 557 #endif
 558
 559 #ifdef AFS_LINUX24_ENV
 560 static int
 561 afsproc_init(void)
 562 {
 563     struct proc_dir_entry *entry2;
 564     struct proc_dir_entry *entry1;
 565     struct proc_dir_entry *entry;
 566
 567     openafs_procfs = proc_mkdir(PROC_FSDIRNAME, proc_root_fs);
 568     entry1 = create_proc_entry(PROC_SYSCALL_NAME, 0666, openafs_procfs);
 569
 570     entry1->proc_fops = &afs_syscall_fops;
 571
 572     entry1->owner = THIS_MODULE;
 573
 574 #ifdef HAVE_KERNEL_LINUX_SEQ_FILE_H
 575     entry2 = create_proc_entry(PROC_CELLSERVDB_NAME, 0, openafs_procfs);
 576     if (entry2)
 577         entry2->proc_fops = &afs_csdb_operations;
 578 #else
 579     entry2 = create_proc_info_entry(PROC_CELLSERVDB_NAME, (S_IFREG|S_IRUGO), openafs_procfs, csdbproc_info);
 580 #endif
 581
 582     entry = create_proc_read_entry(PROC_PEER_NAME, (S_IFREG|S_IRUGO), openafs_procfs, peerproc_read, NULL);
 583
 584     entry = create_proc_read_entry(PROC_CONN_NAME, (S_IFREG|S_IRUGO), openafs_procfs, connproc_read, NULL);
 585
 586     entry = create_proc_read_entry(PROC_CALL_NAME, (S_IFREG|S_IRUGO), openafs_procfs, connproc_read, NULL);
 587
 588     entry = create_proc_read_entry(PROC_RX_NAME, (S_IFREG|S_IRUGO), openafs_procfs, rxproc_read, NULL);
 589
 590     entry = create_proc_read_entry(PROC_SERVICES_NAME, (S_IFREG|S_IRUGO), openafs_procfs, servicesproc_read, NULL);
 591
 592     entry = create_proc_read_entry(PROC_RXSTATS_NAME, (S_IFREG|S_IRUGO), openafs_procfs, rxstatsproc_read, NULL);
 593 #if defined(NEED_IOCTL32) && !defined(HAVE_COMPAT_IOCTL)
 594     if (register_ioctl32_conversion(VIOC_SYSCALL32, NULL) == 0)
 595             ioctl32_done = 1;
 596 #endif
 597
 598     return 0;
 599 }
 600
 601 static void
 602 afsproc_exit(void)
 603 {
 604     remove_proc_entry(PROC_RXSTATS_NAME, openafs_procfs);
 605     remove_proc_entry(PROC_SERVICES_NAME, openafs_procfs);
 606     remove_proc_entry(PROC_RX_NAME, openafs_procfs);
 607     remove_proc_entry(PROC_CALL_NAME, openafs_procfs);
 608     remove_proc_entry(PROC_CONN_NAME, openafs_procfs);
 609     remove_proc_entry(PROC_PEER_NAME, openafs_procfs);
 610     remove_proc_entry(PROC_CELLSERVDB_NAME, openafs_procfs);
 611     remove_proc_entry(PROC_SYSCALL_NAME, openafs_procfs);
 612     remove_proc_entry(PROC_FSDIRNAME, proc_root_fs);
 613 #if defined(NEED_IOCTL32) && !defined(HAVE_COMPAT_IOCTL)
 614     if (ioctl32_done)
 615             unregister_ioctl32_conversion(VIOC_SYSCALL32);
 616 #endif
 617 }
 618 #endif
 619
 620 extern asmlinkage long
 621 afs_syscall(long syscall, long parm1, long parm2, long parm3, long parm4);
 622
 623 static int
 624 afs_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 625           unsigned long arg)
 626 {
 627
 628     struct afsprocdata sysargs;
 629 #ifdef NEED_IOCTL32
 630     struct afsprocdata32 sysargs32;
 631 #endif
 632
 633     if (cmd != VIOC_SYSCALL && cmd != VIOC_SYSCALL32) return -EINVAL;
 634
 635 #ifdef NEED_IOCTL32
 636 #ifdef AFS_LINUX26_ENV
 637 #ifdef AFS_S390X_LINUX26_ENV
 638     if (test_thread_flag(TIF_31BIT))
 639 #elif AFS_AMD64_LINUX20_ENV
 640     if (test_thread_flag(TIF_IA32))
 641 #else
 642     if (test_thread_flag(TIF_32BIT))
 643 #endif /* AFS_S390X_LINUX26_ENV */
 644 #else
 645 #ifdef AFS_SPARC64_LINUX24_ENV
 646     if (current->thread.flags & SPARC_FLAG_32BIT)
 647 #elif defined(AFS_SPARC64_LINUX20_ENV)
 648     if (current->tss.flags & SPARC_FLAG_32BIT)
 649 #elif defined(AFS_AMD64_LINUX20_ENV)
 650     if (current->thread.flags & THREAD_IA32)
 651 #elif defined(AFS_PPC64_LINUX20_ENV)
 652     if (current->thread.flags & PPC_FLAG_32BIT)
 653 #elif defined(AFS_S390X_LINUX20_ENV)
 654     if (current->thread.flags & S390_FLAG_31BIT)
 655 #else
 656 #error Not done for this linux type
 657 #endif /* AFS_LINUX26_ENV */
 658 #endif /* NEED_IOCTL32 */
 659     {
 660         if (copy_from_user(&sysargs32, (void *)arg,
 661                            sizeof(struct afsprocdata32)))
 662             return -EFAULT;
 663
 664         return afs_syscall((unsigned long)sysargs32.syscall,
 665                            (unsigned long)sysargs32.param1,
 666                            (unsigned long)sysargs32.param2,
 667                            (unsigned long)sysargs32.param3,
 668                            (unsigned long)sysargs32.param4);
 669     } else
 670 #endif
 671     {
 672         if (copy_from_user(&sysargs, (void *)arg, sizeof(struct afsprocdata)))
 673             return -EFAULT;
 674
 675         return afs_syscall(sysargs.syscall, sysargs.param1,
 676                            sysargs.param2, sysargs.param3, sysargs.param4);
 677     }
 678 }
 679
 680 #if defined(HAVE_UNLOCKED_IOCTL) || defined(HAVE_COMPAT_IOCTL)
 681 static long afs_unlocked_ioctl(struct file *file, unsigned int cmd,
 682                                unsigned long arg) {
 683     return afs_ioctl(FILE_INODE(file), file, cmd, arg);
 684 }
 685 #endif
 686
 687 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 688 int __init
 689 afs_init(void)
 690 #else
 691 int
 692 init_module(void)
 693 #endif
 694 {
 695     int err;
 696     RWLOCK_INIT(&afs_xosi, "afs_xosi");
 697
 698 #if !defined(AFS_LINUX24_ENV)
 699     /* obtain PAGE_OFFSET value */
 700     afs_linux_page_offset = get_page_offset();
 701
 702 #ifndef AFS_S390_LINUX22_ENV
 703     if (afs_linux_page_offset == 0) {
 704         /* couldn't obtain page offset so can't continue */
 705         printf("afs: Unable to obtain PAGE_OFFSET. Exiting..");
 706         return -EIO;
 707     }
 708 #endif /* AFS_S390_LINUX22_ENV */
 709 #endif /* !defined(AFS_LINUX24_ENV) */
 710
 711     osi_Init();
 712
 713     err = osi_syscall_init();
 714     if (err)
 715         return err;
 716     err = afs_init_inodecache();
 717     if (err)
 718         return err;
 719     register_filesystem(&afs_fs_type);
 720     osi_sysctl_init();
 721 #ifdef AFS_LINUX24_ENV
 722     afsproc_init();
 723 #endif
 724
 725     return 0;
 726 }
 727
 728 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 729 void __exit
 730 afs_cleanup(void)
 731 #else
 732 void
 733 cleanup_module(void)
 734 #endif
 735 {
 736     osi_sysctl_clean();
 737     osi_syscall_clean();
 738     unregister_filesystem(&afs_fs_type);
 739
 740     afs_destroy_inodecache();
 741     osi_linux_free_afs_memory();
 742
 743 #ifdef AFS_LINUX24_ENV
 744     afsproc_exit();
 745 #endif
 746     return;
 747 }
 748
 749 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 750 MODULE_LICENSE("http://www.openafs.org/dl/license10.html");
 751 module_init(afs_init);
 752 module_exit(afs_cleanup);
 753 #endif
 754
 755
 756 #if !defined(AFS_LINUX24_ENV)
 757 static long
 758 get_page_offset(void)
 759 {
 760 #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)
 761     return PAGE_OFFSET;
 762 #else
 763     struct task_struct *p, *q;
 764
 765     /* search backward thru the circular list */
 766 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 767     read_lock(&tasklist_lock);
 768 #endif
 769     /* search backward thru the circular list */
 770 #ifdef DEFINED_PREV_TASK
 771     for (q = current; p = q; q = prev_task(p)) {
 772 #else
 773     for (p = current; p; p = p->prev_task) {
 774 #endif
 775         if (p->pid == 1) {
 776 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 777             read_unlock(&tasklist_lock);
 778 #endif
 779             return p->addr_limit.seg;
 780         }
 781     }
 782
 783 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 784     read_unlock(&tasklist_lock);
 785 #endif
 786     return 0;
 787 #endif
 788 }
 789 #endif /* !AFS_LINUX24_ENV */