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 #if !defined(EXPORTED_SYS_CALL_TABLE) && defined(HAVE_KERNEL_LINUX_SYSCALL_H)
  37 #include <linux/syscall.h>
  38 #endif
  39
  40 #ifdef AFS_SPARC64_LINUX24_ENV
  41 #define __NR_setgroups32      82        /* This number is not exported for some bizarre reason. */
  42 #endif
  43
  44 #if !defined(AFS_LINUX24_ENV)
  45 asmlinkage int (*sys_settimeofdayp) (struct timeval * tv,
  46                                      struct timezone * tz);
  47 #endif
  48 asmlinkage long (*sys_setgroupsp) (int gidsetsize, gid_t * grouplist);
  49 #ifdef EXPORTED_SYS_CALL_TABLE
  50 #if defined(AFS_SPARC64_LINUX20_ENV) || defined(AFS_S390X_LINUX24_ENV)
  51 extern unsigned int sys_call_table[];   /* changed to uint because SPARC64 and S390X have syscalltable of 32bit items */
  52 #else
  53 extern void *sys_call_table[];  /* safer for other linuces */
  54 #endif
  55 #else /* EXPORTED_SYS_CALL_TABLE */
  56 #if defined(AFS_SPARC64_LINUX20_ENV) || defined(AFS_S390X_LINUX24_ENV)
  57 static unsigned int *sys_call_table;    /* changed to uint because SPARC64 and S390X have syscalltable of 32bit items */
  58 #else
  59 static void **sys_call_table;   /* safer for other linuces */
  60 #endif
  61 #endif
  62
  63 #if defined(AFS_S390X_LINUX24_ENV)
  64 #define _S(x) ((x)<<1)
  65 #else
  66 #define _S(x) x
  67 #endif
  68
  69 extern struct file_system_type afs_fs_type;
  70
  71 #if !defined(AFS_LINUX24_ENV)
  72 static long get_page_offset(void);
  73 #endif
  74
  75 #if defined(AFS_LINUX24_ENV)
  76 DECLARE_MUTEX(afs_global_lock);
  77 #else
  78 struct semaphore afs_global_lock = MUTEX;
  79 #endif
  80 int afs_global_owner = 0;
  81 #if !defined(AFS_LINUX24_ENV)
  82 unsigned long afs_linux_page_offset = 0;        /* contains the PAGE_OFFSET value */
  83 #endif
  84
  85 /* Since sys_ni_syscall is not exported, I need to cache it in order to restore
  86  * it.
  87  */
  88 #if defined(AFS_SPARC64_LINUX20_ENV) || defined(AFS_S390X_LINUX24_ENV)
  89 static unsigned int afs_ni_syscall = 0;
  90 #else
  91 static void *afs_ni_syscall = 0;
  92 #endif
  93
  94 #ifdef AFS_AMD64_LINUX20_ENV
  95 #ifdef EXPORTED_IA32_SYS_CALL_TABLE
  96 extern void *ia32_sys_call_table[];
  97 #else
  98 static void **ia32_sys_call_table;
  99 #endif
 100
 101 static void *ia32_ni_syscall = 0;
 102 asmlinkage long (*sys32_setgroupsp) (int gidsetsize, u16 * grouplist);
 103 #if defined(__NR_ia32_setgroups32)
 104 asmlinkage long (*sys32_setgroups32p) (int gidsetsize, gid_t * grouplist);
 105 #endif /* __NR_ia32_setgroups32 */
 106 #endif /* AFS_AMD64_LINUX20_ENV */
 107
 108 #ifdef AFS_PPC64_LINUX20_ENV
 109 asmlinkage long (*sys32_setgroupsp)(int gidsetsize, gid_t *grouplist);
 110 #endif /* AFS_AMD64_LINUX20_ENV */
 111
 112 #ifdef AFS_SPARC64_LINUX20_ENV
 113 static unsigned int afs_ni_syscall32 = 0;
 114 asmlinkage int (*sys32_setgroupsp) (int gidsetsize,
 115                                     __kernel_gid_t32 * grouplist);
 116 #if defined(__NR_setgroups32)
 117 asmlinkage int (*sys32_setgroups32p) (int gidsetsize,
 118                                       __kernel_gid_t32 * grouplist);
 119 #endif /* __NR_setgroups32 */
 120 #ifdef EXPORTED_SYS_CALL_TABLE
 121 extern unsigned int sys_call_table32[];
 122 #else /* EXPORTED_SYS_CALL_TABLE */
 123 static unsigned int *sys_call_table32;
 124 #endif /* EXPORTED_SYS_CALL_TABLE */
 125
 126 asmlinkage int
 127 afs_syscall32(long syscall, long parm1, long parm2, long parm3, long parm4,
 128               long parm5)
 129 {
 130     __asm__ __volatile__("srl %o4, 0, %o4\n\t" "mov %o7, %i7\n\t"
 131                          "call afs_syscall\n\t" "srl %o5, 0, %o5\n\t"
 132                          "ret\n\t" "nop");
 133 }
 134 #endif /* AFS_SPARC64_LINUX20_ENV */
 135
 136 static int afs_ioctl(struct inode *, struct file *, unsigned int,
 137                      unsigned long);
 138
 139 static struct file_operations afs_syscall_fops = {
 140     .ioctl = afs_ioctl,
 141 };
 142
 143 int
 144 csdbproc_read(char *buffer, char **start, off_t offset, int count,
 145               int *eof, void *data)
 146 {
 147     int len, j;
 148     struct afs_q *cq, *tq;
 149     struct cell *tc;
 150     char tbuffer[16];
 151     afs_uint32 addr;
 152
 153     len = 0;
 154     ObtainReadLock(&afs_xcell);
 155     for (cq = CellLRU.next; cq != &CellLRU; cq = tq) {
 156         tc = QTOC(cq); tq = QNext(cq);
 157         len += sprintf(buffer + len, ">%s #(%d/%d)\n", tc->cellName,
 158                        tc->cellNum, tc->cellIndex);
 159         for (j = 0; j < MAXCELLHOSTS; j++) {
 160             if (!tc->cellHosts[j]) break;
 161             addr = ntohl(tc->cellHosts[j]->addr->sa_ip);
 162             sprintf(tbuffer, "%d.%d.%d.%d",
 163                     (int)((addr>>24) & 0xff), (int)((addr>>16) & 0xff),
 164                     (int)((addr>>8)  & 0xff), (int)( addr      & 0xff));
 165             len += sprintf(buffer + len, "%s #%s\n", tbuffer, tbuffer);
 166         }
 167     }
 168     ReleaseReadLock(&afs_xcell);
 169
 170     if (offset >= len) {
 171         *start = buffer;
 172         *eof = 1;
 173         return 0;
 174     }
 175     *start = buffer + offset;
 176     if ((len -= offset) > count)
 177         return count;
 178     *eof = 1;
 179     return len;
 180 }
 181
 182 int
 183 peerproc_read(char *buffer, char **start, off_t offset, int count,
 184               int *eof, void *data)
 185 {
 186     int len, i, j;
 187     struct rx_peer *sep;
 188
 189     len = 0;
 190     for (i = 0, j = 0; i < 256; i++) {
 191         for (sep = rx_peerHashTable[i]; sep; sep = sep->next, j++) {
 192             len += sprintf(buffer + len, "%lx: next=0x%lx, host=0x%x, ", (unsigned long)sep,
 193                    (unsigned long)sep->next, sep->host);
 194             len += sprintf(buffer + len, "ifMTU=%d, natMTU=%d, maxMTU=%d\n", sep->ifMTU,
 195                    sep->natMTU, sep->maxMTU);
 196             len += sprintf(buffer + len, "\trtt=%d:%d, timeout(%d:%d), nSent=%d, reSends=%d\n",
 197                    sep->rtt, sep->rtt_dev, sep->timeout.sec,
 198                    sep->timeout.usec, sep->nSent, sep->reSends);
 199             len += sprintf(buffer + len, "\trefCount=%d, port=%d, idleWhen=0x%x\n",
 200                    sep->refCount, sep->port, sep->idleWhen);
 201             len += sprintf(buffer + len, "\tCongestionQueue (0x%lx:0x%lx), inPacketSkew=0x%x, outPacketSkew=0x%x\n",
 202                  (unsigned long)sep->congestionQueue.prev, (unsigned long)sep->congestionQueue.next,
 203                  sep->inPacketSkew, sep->outPacketSkew);
 204 #ifdef RX_ENABLE_LOCKS
 205             len += sprintf(buffer + len, "\tpeer_lock=%d\n", sep->peer_lock);
 206 #endif /* RX_ENABLE_LOCKS */
 207         }
 208     }
 209
 210     if (offset >= len) {
 211         *start = buffer;
 212         *eof = 1;
 213         return 0;
 214     }
 215     *start = buffer + offset;
 216     if ((len -= offset) > count)
 217         return count;
 218     *eof = 1;
 219     return len;
 220 }
 221
 222 int
 223 rxstatsproc_read(char *buffer, char **start, off_t offset, int count,
 224               int *eof, void *data)
 225 {
 226     int len, i;
 227
 228     len = 0;
 229     len += sprintf(buffer + len, "packetRequests = %d\n", rx_stats.packetRequests);
 230     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_RECEIVE,
 231            rx_stats.receivePktAllocFailures);
 232     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_SEND,
 233            rx_stats.sendPktAllocFailures);
 234     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_SPECIAL,
 235            rx_stats.specialPktAllocFailures);
 236     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_RECV_CBUF,
 237            rx_stats.receiveCbufPktAllocFailures);
 238     len += sprintf(buffer + len, "noPackets[%d] = %d\n", RX_PACKET_CLASS_SEND_CBUF,
 239            rx_stats.sendCbufPktAllocFailures);
 240     len += sprintf(buffer + len, "socketGreedy = %d\n", rx_stats.socketGreedy);
 241     len += sprintf(buffer + len, "bogusPacketOnRead = %d\n", rx_stats.bogusPacketOnRead);
 242     len += sprintf(buffer + len, "bogusHost = %d\n", rx_stats.bogusHost);
 243     len += sprintf(buffer + len, "noPacketOnRead = %d\n", rx_stats.noPacketOnRead);
 244     len += sprintf(buffer + len, "noPacketBuffersOnRead = %d\n",
 245            rx_stats.noPacketBuffersOnRead);
 246     len += sprintf(buffer + len, "selects = %d\n", rx_stats.selects);
 247     len += sprintf(buffer + len, "sendSelects = %d\n", rx_stats.sendSelects);
 248     for (i = 0; i < RX_N_PACKET_TYPES; i++)
 249         len += sprintf(buffer + len, "packetsRead[%d] = %d\n", i, rx_stats.packetsRead[i]);
 250     len += sprintf(buffer + len, "dataPacketsRead = %d\n", rx_stats.dataPacketsRead);
 251     len += sprintf(buffer + len, "ackPacketsRead = %d\n", rx_stats.ackPacketsRead);
 252     len += sprintf(buffer + len, "dupPacketsRead = %d\n", rx_stats.dupPacketsRead);
 253     len += sprintf(buffer + len, "spuriousPacketsRead = %d\n", rx_stats.spuriousPacketsRead);
 254     for (i = 0; i < RX_N_PACKET_TYPES; i++)
 255         len += sprintf(buffer + len, "packetsSent[%d] = %d\n", i, rx_stats.packetsSent[i]);
 256     len += sprintf(buffer + len, "ackPacketsSent = %d\n", rx_stats.ackPacketsSent);
 257     len += sprintf(buffer + len, "pingPacketsSent = %d\n", rx_stats.pingPacketsSent);
 258     len += sprintf(buffer + len, "abortPacketsSent = %d\n", rx_stats.abortPacketsSent);
 259     len += sprintf(buffer + len, "busyPacketsSent = %d\n", rx_stats.busyPacketsSent);
 260     len += sprintf(buffer + len, "dataPacketsSent = %d\n", rx_stats.dataPacketsSent);
 261     len += sprintf(buffer + len, "dataPacketsReSent = %d\n", rx_stats.dataPacketsReSent);
 262     len += sprintf(buffer + len, "dataPacketsPushed = %d\n", rx_stats.dataPacketsPushed);
 263     len += sprintf(buffer + len, "ignoreAckedPacket = %d\n", rx_stats.ignoreAckedPacket);
 264     len += sprintf(buffer + len, "totalRtt = %d sec, %d usec\n", rx_stats.totalRtt.sec,
 265            rx_stats.totalRtt.usec);
 266     len += sprintf(buffer + len, "minRtt = %d sec, %d usec\n", rx_stats.minRtt.sec,
 267            rx_stats.minRtt.usec);
 268     len += sprintf(buffer + len, "maxRtt = %d sec, %d usec\n", rx_stats.maxRtt.sec,
 269            rx_stats.maxRtt.usec);
 270     len += sprintf(buffer + len, "nRttSamples = %d\n", rx_stats.nRttSamples);
 271     len += sprintf(buffer + len, "nServerConns = %d\n", rx_stats.nServerConns);
 272     len += sprintf(buffer + len, "nClientConns = %d\n", rx_stats.nClientConns);
 273     len += sprintf(buffer + len, "nPeerStructs = %d\n", rx_stats.nPeerStructs);
 274     len += sprintf(buffer + len, "nCallStructs = %d\n", rx_stats.nCallStructs);
 275     len += sprintf(buffer + len, "nFreeCallStructs = %d\n", rx_stats.nFreeCallStructs);
 276     len += sprintf(buffer + len, "netSendFailures  = %d\n", rx_stats.netSendFailures);
 277     len += sprintf(buffer + len, "fatalErrors      = %d\n", rx_stats.fatalErrors);
 278
 279     if (offset >= len) {
 280         *start = buffer;
 281         *eof = 1;
 282         return 0;
 283     }
 284     *start = buffer + offset;
 285     if ((len -= offset) > count)
 286         return count;
 287     *eof = 1;
 288     return len;
 289 }
 290
 291 int
 292 rxproc_read(char *buffer, char **start, off_t offset, int count,
 293               int *eof, void *data)
 294 {
 295     int len, i;
 296
 297     len = 0;
 298     len += sprintf(buffer + len, "rx_extraQuota = %d\n", rx_extraQuota);
 299     len += sprintf(buffer + len, "rx_extraPackets = %d\n", rx_extraPackets);
 300     len += sprintf(buffer + len, "rx_stackSize = %d\n", rx_stackSize);
 301     len += sprintf(buffer + len, "rx_connDeadTime = %d\n", rx_connDeadTime);
 302     len += sprintf(buffer + len, "rx_idleConnectionTime = %d\n", rx_idleConnectionTime);
 303     len += sprintf(buffer + len, "rx_idlePeerTime = %d\n", rx_idlePeerTime);
 304     len += sprintf(buffer + len, "rx_initSendWindow = %d\n", rx_initSendWindow);
 305     len += sprintf(buffer + len, "rxi_nSendFrags = %d\n", rxi_nSendFrags);
 306     len += sprintf(buffer + len, "rx_nPackets = %d\n", rx_nPackets);
 307     len += sprintf(buffer + len, "rx_nFreePackets = %d\n", rx_nFreePackets);
 308     len += sprintf(buffer + len, "rx_socket = 0x%lx\n", (unsigned long)rx_socket);
 309     len += sprintf(buffer + len, "rx_Port = %d\n", rx_port);
 310     for (i = 0; i < RX_N_PACKET_CLASSES; i++)
 311         len += sprintf(buffer + len, "\trx_packetQuota[%d] = %d\n", i, rx_packetQuota[i]);
 312
 313     len += sprintf(buffer + len, "rx_nextCid = 0x%x\n", rx_nextCid);
 314     len += sprintf(buffer + len, "rx_epoch = 0u%u\n", rx_epoch);
 315     len += sprintf(buffer + len, "rx_waitingForPackets = %x\n", rx_waitingForPackets);
 316     len += sprintf(buffer + len, "rxi_nCalls = %d\n", rxi_nCalls);
 317     len += sprintf(buffer + len, "rxi_dataQuota = %d\n", rxi_dataQuota);
 318     len += sprintf(buffer + len, "rxi_availProcs = %d\n", rxi_availProcs);
 319     len += sprintf(buffer + len, "rxi_totalMin = %d\n", rxi_totalMin);
 320     len += sprintf(buffer + len, "rxi_minDeficit = %d\n", rxi_minDeficit);
 321
 322     len += sprintf(buffer + len, "rxevent_nFree = %d\nrxevent_nPosted = %d\n", rxevent_nFree, rxevent_nPosted);
 323
 324     if (offset >= len) {
 325         *start = buffer;
 326         *eof = 1;
 327         return 0;
 328     }
 329     *start = buffer + offset;
 330     if ((len -= offset) > count)
 331         return count;
 332     *eof = 1;
 333     return len;
 334 }
 335
 336 int
 337 connproc_read(char *buffer, char **start, off_t offset, int count,
 338               int *eof, void *data)
 339 {
 340     int len, i, j;
 341     struct rx_connection *sep;
 342
 343     len = 0;
 344     for (i = 0, j = 0; i < 256; i++) {
 345         for (sep = rx_connHashTable[i]; sep; sep = sep->next, j++) {
 346             len += sprintf(buffer + len, "%lx: next=0x%lx, peer=0x%lx, epoch=0x%x, cid=0x%x, ackRate=%d\n",
 347                            (unsigned long)sep, (unsigned long)sep->next, (unsigned long)sep->peer,
 348                            sep->epoch, sep->cid, sep->ackRate);
 349             len += sprintf(buffer + len, "\tcall[%lx=%d, %lx=%d, %lx=%d, %lx=%d]\n",
 350                            (unsigned long)sep->call[0], sep->callNumber[0],
 351                            (unsigned long)sep->call[1], sep->callNumber[1],
 352                            (unsigned long)sep->call[2], sep->callNumber[2],
 353                            (unsigned long)sep->call[3], sep->callNumber[3]);
 354             len += sprintf(buffer + len, "\ttimeout=%d, flags=0x%x, type=0x%x, serviceId=%d, service=0x%lx, refCount=%d\n",
 355                            sep->timeout, sep->flags, sep->type,
 356                            sep->serviceId, (unsigned long)sep->service, sep->refCount);
 357             len += sprintf(buffer + len, "\tserial=%d, lastSerial=%d, secsUntilDead=%d, secsUntilPing=%d, secIndex=%d\n",
 358                            sep->serial, sep->lastSerial, sep->secondsUntilDead,
 359                            sep->secondsUntilPing, sep->securityIndex);
 360             len += sprintf(buffer + len, "\terror=%d, secObject=0x%lx, secData=0x%lx, secHeaderSize=%d, secmaxTrailerSize=%d\n",
 361                            sep->error, (unsigned long)sep->securityObject,
 362                            (unsigned long)sep->securityData,
 363                            sep->securityHeaderSize, sep->securityMaxTrailerSize);
 364             len += sprintf(buffer + len, "\tchallEvent=0x%lx, lastSendTime=0x%x, maxSerial=%d, hardDeadTime=%d\n",
 365                            (unsigned long)sep->challengeEvent, sep->lastSendTime,
 366                            sep->maxSerial, sep->hardDeadTime);
 367             if (sep->flags & RX_CONN_MAKECALL_WAITING)
 368                 len += sprintf(buffer + len, "\t***** Conn in RX_CONN_MAKECALL_WAITING state *****\n");
 369 #ifdef RX_ENABLE_LOCKS
 370             len += sprintf(buffer + len, "\tcall_lock=%d, call_cv=%d, data_lock=%d, refCount=%d\n",
 371                            sep->conn_call_lock, sep->conn_call_cv,
 372                            sep->conn_data_lock, sep->refCount);
 373 #endif /* RX_ENABLE_LOCKS */
 374         }
 375     }
 376
 377     if (offset >= len) {
 378         *start = buffer;
 379         *eof = 1;
 380         return 0;
 381     }
 382     *start = buffer + offset;
 383     if ((len -= offset) > count)
 384         return count;
 385     *eof = 1;
 386     return len;
 387 }
 388
 389 int
 390 servicesproc_read(char *buffer, char **start, off_t offset, int count,
 391               int *eof, void *data)
 392 {
 393     int len, i, j;
 394     struct rx_service *sentry;
 395
 396     len = 0;
 397     for (i = 0, j = 0; i < RX_MAX_SERVICES; i++) {
 398         if ((sentry = rx_services[i])) {
 399             j++;
 400             len += sprintf(buffer + len,
 401                            "\t%lx: serviceId=%d, port=%d, serviceName=%s, socket=0x%lx\n",
 402                            (unsigned long)sentry, sentry->serviceId, sentry->servicePort,
 403                            sentry->serviceName, (unsigned long)sentry->socket);
 404             len += sprintf(buffer + len,
 405                            "\t\tnSecObj=%d, nReqRunning=%d, maxProcs=%d, minProcs=%d, connDeadTime=%d, idleDeadTime=%d\n",
 406                            sentry->nSecurityObjects, sentry->nRequestsRunning,
 407                            sentry->maxProcs, sentry->minProcs,
 408                            sentry->connDeadTime, sentry->idleDeadTime);
 409         }
 410     }
 411
 412     if (offset >= len) {
 413         *start = buffer;
 414         *eof = 1;
 415         return 0;
 416     }
 417     *start = buffer + offset;
 418     if ((len -= offset) > count)
 419         return count;
 420     *eof = 1;
 421     return len;
 422 }
 423
 424 int
 425 callproc_read(char *buffer, char **start, off_t offset, int count,
 426               int *eof, void *data)
 427 {
 428     int len, i, j, k;
 429     struct rx_connection *sep;
 430
 431     len = 0;
 432     for (i = 0, j = 0; i < 256; i++) {
 433         for (sep = rx_connHashTable[i]; sep; sep = sep->next) {
 434             for (k = 0; k < RX_MAXCALLS; k++) {
 435                 struct rx_call *call = sep->call[k];
 436                 if (call) {
 437                     j++;
 438                     len += sprintf(buffer + len,
 439                                    "%lx: conn=0x%lx, qiheader(0x%lx:0x%lx), tq(0x%lx:0x%lx), rq(0x%lx:0x%lx)\n",
 440                                    (unsigned long)call, (unsigned long)call->conn,
 441                                    (unsigned long)call->queue_item_header.prev,
 442                                    (unsigned long)call->queue_item_header.next,
 443                                    (unsigned long)call->tq.prev, (unsigned long)call->tq.next,
 444                                    (unsigned long)call->rq.prev, (unsigned long)call->rq.next);
 445                     len += sprintf(buffer + len,
 446                                    "\t: curvec=%d, curpos=%lx, nLeft=%d, nFree=%d, currPacket=0x%lx, callNumber=0x%lx\n",
 447                                    call->curvec, (unsigned long)call->curpos, call->nLeft,
 448                                    call->nFree, (unsigned long)call->currentPacket,
 449                                    (unsigned long)call->callNumber);
 450                     len += sprintf(buffer + len,
 451                                    "\t: channel=%d, state=0x%x, mode=0x%x, flags=0x%x, localStatus=0x%x, remStatus=0x%x\n",
 452                                    call->channel, call->state, call->mode,
 453                                    call->flags, call->localStatus,
 454                                    call->remoteStatus);
 455                     len += sprintf(buffer + len,
 456                                    "\t: error=%d, timeout=0x%x, rnext=0x%x, rprev=0x%x, rwind=0x%x, tfirst=0x%x, tnext=0x%x\n",
 457                                    call->error, call->timeout, call->rnext,
 458                                    call->rprev, call->rwind, call->tfirst,
 459                                    call->tnext);
 460                     len += sprintf(buffer + len,
 461                                    "\t: twind=%d, resendEvent=0x%lx, timeoutEvent=0x%lx, keepAliveEvent=0x%lx, delayedAckEvent=0x%lx\n",
 462                                    call->twind, (unsigned long)call->resendEvent,
 463                                    (unsigned long)call->timeoutEvent,
 464                                    (unsigned long)call->keepAliveEvent,
 465                                    (unsigned long)call->delayedAckEvent);
 466                     len += sprintf(buffer + len,
 467                                    "\t: lastSendTime=0x%x, lastReceiveTime=0x%x, lastAcked=0x%x, startTime=0x%x, startWait=0x%x\n",
 468                                    call->lastSendTime, call->lastReceiveTime,
 469                                    call->lastAcked, call->startTime.sec,
 470                                    call->startWait);
 471                     if (call->flags & RX_CALL_WAIT_PROC)
 472                         len += sprintf(buffer + len,
 473                                        "\t******** Call in RX_CALL_WAIT_PROC state **********\n");
 474                     if (call->flags & RX_CALL_WAIT_WINDOW_ALLOC)
 475                         len += sprintf(buffer + len,
 476                                        "\t******** Call in RX_CALL_WAIT_WINDOW_ALLOC state **********\n");
 477                     if (call->flags & RX_CALL_READER_WAIT)
 478                         len += sprintf(buffer + len,
 479                                        "\t******** Conn in RX_CALL_READER_WAIT state **********\n");
 480                     if (call->flags & RX_CALL_WAIT_PACKETS)
 481                         len += sprintf(buffer + len,
 482                                        "\t******** Conn in RX_CALL_WAIT_PACKETS state **********\n");
 483 #ifdef RX_ENABLE_LOCKS
 484                     len += sprintf(buffer + len,
 485                                    "\t: lock=0x%x, cv_twind=0x%x, cv_rq=0x%x, refCount= %d\n",
 486                                    call->lock, call->cv_twind, call->cv_rq,
 487                                    call->refCount);
 488 #endif /* RX_ENABLE_LOCKS */
 489                     len += sprintf(buffer + len, "\t: MTU=%d\n", call->MTU);
 490                 }
 491             }
 492         }
 493     }
 494
 495     if (offset >= len) {
 496         *start = buffer;
 497         *eof = 1;
 498         return 0;
 499     }
 500     *start = buffer + offset;
 501     if ((len -= offset) > count)
 502         return count;
 503     *eof = 1;
 504     return len;
 505 }
 506
 507 static struct proc_dir_entry *openafs_procfs;
 508
 509 static int
 510 afsproc_init(void)
 511 {
 512     struct proc_dir_entry *entry1;
 513     struct proc_dir_entry *entry;
 514
 515     openafs_procfs = proc_mkdir(PROC_FSDIRNAME, proc_root_fs);
 516     entry1 = create_proc_entry(PROC_SYSCALL_NAME, 0666, openafs_procfs);
 517
 518     entry1->proc_fops = &afs_syscall_fops;
 519
 520     entry1->owner = THIS_MODULE;
 521
 522     entry = create_proc_read_entry(PROC_CELLSERVDB_NAME, (S_IFREG|S_IRUGO), openafs_procfs, csdbproc_read, NULL);
 523
 524     entry = create_proc_read_entry(PROC_PEER_NAME, (S_IFREG|S_IRUGO), openafs_procfs, peerproc_read, NULL);
 525
 526     entry = create_proc_read_entry(PROC_CONN_NAME, (S_IFREG|S_IRUGO), openafs_procfs, connproc_read, NULL);
 527
 528     entry = create_proc_read_entry(PROC_CALL_NAME, (S_IFREG|S_IRUGO), openafs_procfs, connproc_read, NULL);
 529
 530     entry = create_proc_read_entry(PROC_RX_NAME, (S_IFREG|S_IRUGO), openafs_procfs, rxproc_read, NULL);
 531
 532     entry = create_proc_read_entry(PROC_SERVICES_NAME, (S_IFREG|S_IRUGO), openafs_procfs, servicesproc_read, NULL);
 533
 534     entry = create_proc_read_entry(PROC_RXSTATS_NAME, (S_IFREG|S_IRUGO), openafs_procfs, rxstatsproc_read, NULL);
 535
 536     return 0;
 537 }
 538
 539 static void
 540 afsproc_exit(void)
 541 {
 542     remove_proc_entry(PROC_RXSTATS_NAME, openafs_procfs);
 543     remove_proc_entry(PROC_SERVICES_NAME, openafs_procfs);
 544     remove_proc_entry(PROC_RX_NAME, openafs_procfs);
 545     remove_proc_entry(PROC_CALL_NAME, openafs_procfs);
 546     remove_proc_entry(PROC_CONN_NAME, openafs_procfs);
 547     remove_proc_entry(PROC_PEER_NAME, openafs_procfs);
 548     remove_proc_entry(PROC_CELLSERVDB_NAME, openafs_procfs);
 549     remove_proc_entry(PROC_SYSCALL_NAME, openafs_procfs);
 550     remove_proc_entry(PROC_FSDIRNAME, proc_root_fs);
 551 }
 552
 553 extern asmlinkage long
 554 afs_syscall(long syscall, long parm1, long parm2, long parm3, long parm4);
 555
 556 static int
 557 afs_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 558           unsigned long arg)
 559 {
 560
 561     struct afsprocdata sysargs;
 562
 563     if (cmd != VIOC_SYSCALL) return -EINVAL;
 564
 565     if (copy_from_user(&sysargs, (void *)arg, sizeof(struct afsprocdata)))
 566         return -EFAULT;
 567
 568     return afs_syscall(sysargs.syscall, sysargs.param1,
 569                        sysargs.param2, sysargs.param3, sysargs.param4);
 570 }
 571
 572 #ifdef AFS_IA64_LINUX20_ENV
 573
 574 asmlinkage long
 575 afs_syscall_stub(int r0, int r1, long r2, long r3, long r4, long gp)
 576 {
 577     __asm__ __volatile__("alloc r42 = ar.pfs, 8, 3, 6, 0\n\t" "mov r41 = b0\n\t"        /* save rp */
 578                          "mov out0 = in0\n\t" "mov out1 = in1\n\t" "mov out2 = in2\n\t" "mov out3 = in3\n\t" "mov out4 = in4\n\t" "mov out5 = gp\n\t"   /* save gp */
 579                          ";;\n" ".L1:\n\t" "mov r3 = ip\n\t" ";;\n\t" "addl r15=.fptr_afs_syscall-.L1,r3\n\t" ";;\n\t" "ld8 r15=[r15]\n\t" ";;\n\t" "ld8 r16=[r15],8\n\t" ";;\n\t" "ld8 gp=[r15]\n\t" "mov b6=r16\n\t" "br.call.sptk.many b0 = b6\n\t" ";;\n\t" "mov ar.pfs = r42\n\t" "mov b0 = r41\n\t" "mov gp = r48\n\t"    /* restore gp */
 580                          "br.ret.sptk.many b0\n" ".fptr_afs_syscall:\n\t"
 581                          "data8 @fptr(afs_syscall)\n\t" ".skip 8");
 582 }
 583
 584 asmlinkage long
 585 afs_xsetgroups_stub(int r0, int r1, long r2, long r3, long r4, long gp)
 586 {
 587     __asm__ __volatile__("alloc r42 = ar.pfs, 8, 3, 6, 0\n\t" "mov r41 = b0\n\t"        /* save rp */
 588                          "mov out0 = in0\n\t" "mov out1 = in1\n\t" "mov out2 = in2\n\t" "mov out3 = in3\n\t" "mov out4 = in4\n\t" "mov out5 = gp\n\t"   /* save gp */
 589                          ";;\n" ".L2:\n\t" "mov r3 = ip\n\t" ";;\n\t" "addl r15=.fptr_afs_xsetgroups - .L2,r3\n\t" ";;\n\t" "ld8 r15=[r15]\n\t" ";;\n\t" "ld8 r16=[r15],8\n\t" ";;\n\t" "ld8 gp=[r15]\n\t" "mov b6=r16\n\t" "br.call.sptk.many b0 = b6\n\t" ";;\n\t" "mov ar.pfs = r42\n\t" "mov b0 = r41\n\t" "mov gp = r48\n\t"       /* restore gp */
 590                          "br.ret.sptk.many b0\n" ".fptr_afs_xsetgroups:\n\t"
 591                          "data8 @fptr(afs_xsetgroups)\n\t" ".skip 8");
 592 }
 593
 594 struct fptr {
 595     void *ip;
 596     unsigned long gp;
 597 };
 598
 599 #endif /* AFS_IA64_LINUX20_ENV */
 600
 601 #ifdef AFS_LINUX24_ENV
 602 asmlinkage int (*sys_setgroups32p) (int gidsetsize,
 603                                     __kernel_gid32_t * grouplist);
 604 #endif /* AFS_LINUX24_ENV */
 605
 606 #if defined(AFS_SPARC64_LINUX20_ENV) || defined(AFS_S390X_LINUX24_ENV)
 607 #define POINTER2SYSCALL (unsigned int)(unsigned long)
 608 #define SYSCALL2POINTER (void *)(long)
 609 #else
 610 #define POINTER2SYSCALL (void *)
 611 #define SYSCALL2POINTER (void *)
 612 #endif
 613
 614
 615 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 616 int __init
 617 afs_init(void)
 618 #else
 619 int
 620 init_module(void)
 621 #endif
 622 {
 623 #if defined(AFS_IA64_LINUX20_ENV)
 624     unsigned long kernel_gp = 0;
 625     static struct fptr sys_setgroups;
 626 #endif /* defined(AFS_IA64_LINUX20_ENV) */
 627     extern long afs_xsetgroups();
 628 #if defined(__NR_setgroups32)
 629     extern int afs_xsetgroups32();
 630 #endif /* __NR_setgroups32 */
 631 #if defined(AFS_SPARC64_LINUX20_ENV) || defined (AFS_AMD64_LINUX20_ENV) || defined(AFS_PPC64_LINUX20_ENV)
 632     extern int afs32_xsetgroups();
 633 #if (defined(__NR_setgroups32) && defined(AFS_SPARC64_LINUX20_ENV))
 634     extern int afs32_xsetgroups32();
 635 #endif /* defined(__NR_setgroups32) && defined(AFS_SPARC64_LINUX20_ENV) */
 636 #if (defined(__NR_ia32_setgroups32) && defined(AFS_AMD64_LINUX20_ENV))
 637     extern int afs32_xsetgroups32();
 638 #endif /* (defined(__NR_ia32_setgroups32) && defined(AFS_AMD64_LINUX20_ENV) */
 639 #endif /* AFS_SPARC64_LINUX20_ENV || AFS_AMD64_LINUX20_ENV || AFS_PPC64_LINUX20_ENV */
 640
 641 #if !defined(EXPORTED_SYS_CALL_TABLE) || (defined(AFS_AMD64_LINUX20_ENV) && !defined(EXPORTED_IA32_SYS_CALL_TABLE))
 642     unsigned long *ptr;
 643     unsigned long offset=0;
 644     unsigned long datalen=0;
 645 #if defined(EXPORTED_KALLSYMS_SYMBOL)
 646     unsigned long token=0;
 647 #endif
 648 #if defined(EXPORTED_KALLSYMS_SYMBOL) || defined(EXPORTED_KALLSYMS_ADDRESS)
 649     int ret;
 650     char *mod_name;
 651     unsigned long mod_start=0;
 652     unsigned long mod_end=0;
 653     char *sec_name;
 654     unsigned long sec_start=0;
 655     unsigned long sec_end=0;
 656     char *sym_name;
 657     unsigned long sym_start=0;
 658     unsigned long sym_end=0;
 659 #endif
 660 #endif /* EXPORTED_SYS_CALL_TABLE */
 661
 662     RWLOCK_INIT(&afs_xosi, "afs_xosi");
 663
 664 #if !defined(AFS_LINUX24_ENV)
 665     /* obtain PAGE_OFFSET value */
 666     afs_linux_page_offset = get_page_offset();
 667
 668 #ifndef AFS_S390_LINUX22_ENV
 669     if (afs_linux_page_offset == 0) {
 670         /* couldn't obtain page offset so can't continue */
 671         printf("afs: Unable to obtain PAGE_OFFSET. Exiting..");
 672         return -EIO;
 673     }
 674 #endif /* AFS_S390_LINUX22_ENV */
 675 #endif /* !defined(AFS_LINUX24_ENV) */
 676
 677 #ifndef EXPORTED_SYS_CALL_TABLE
 678     sys_call_table = 0;
 679
 680 #ifdef EXPORTED_KALLSYMS_SYMBOL
 681     ret = 1;
 682     token = 0;
 683     while (ret) {
 684         sym_start = 0;
 685         ret =
 686             kallsyms_symbol_to_address("sys_call_table", &token, &mod_name,
 687                                        &mod_start, &mod_end, &sec_name,
 688                                        &sec_start, &sec_end, &sym_name,
 689                                        &sym_start, &sym_end);
 690         if (ret && !strcmp(mod_name, "kernel"))
 691             break;
 692     }
 693     if (ret && sym_start) {
 694         sys_call_table = sym_start;
 695     }
 696 #elif defined(EXPORTED_KALLSYMS_ADDRESS)
 697     ret =
 698         kallsyms_address_to_symbol((unsigned long)&init_mm, &mod_name,
 699                                    &mod_start, &mod_end, &sec_name,
 700                                    &sec_start, &sec_end, &sym_name,
 701                                    &sym_start, &sym_end);
 702     ptr = (unsigned long *)sec_start;
 703     datalen = (sec_end - sec_start) / sizeof(unsigned long);
 704 #elif defined(AFS_IA64_LINUX20_ENV)
 705     ptr = (unsigned long *)(&sys_close - 0x180000);
 706     datalen = 0x180000 / sizeof(ptr);
 707 #elif defined(AFS_AMD64_LINUX20_ENV)
 708     ptr = (unsigned long *)&init_mm;
 709     datalen = 0x360000 / sizeof(ptr);
 710 #else
 711     ptr = (unsigned long *)&init_mm;
 712     datalen = 16384;
 713 #endif
 714     for (offset = 0; offset < datalen; ptr++, offset++) {
 715 #if defined(AFS_IA64_LINUX20_ENV)
 716         unsigned long close_ip =
 717             (unsigned long)((struct fptr *)&sys_close)->ip;
 718         unsigned long chdir_ip =
 719             (unsigned long)((struct fptr *)&sys_chdir)->ip;
 720         unsigned long write_ip =
 721             (unsigned long)((struct fptr *)&sys_write)->ip;
 722         if (ptr[0] == close_ip && ptr[__NR_chdir - __NR_close] == chdir_ip
 723             && ptr[__NR_write - __NR_close] == write_ip) {
 724             sys_call_table = (void *)&(ptr[-1 * (__NR_close - 1024)]);
 725             break;
 726         }
 727 #elif defined(EXPORTED_SYS_WAIT4) && defined(EXPORTED_SYS_CLOSE)
 728         if (ptr[0] == (unsigned long)&sys_close
 729             && ptr[__NR_wait4 - __NR_close] == (unsigned long)&sys_wait4) {
 730             sys_call_table = ptr - __NR_close;
 731             break;
 732         }
 733 #elif defined(EXPORTED_SYS_CHDIR) && defined(EXPORTED_SYS_CLOSE)
 734         if (ptr[0] == (unsigned long)&sys_close
 735             && ptr[__NR_chdir - __NR_close] == (unsigned long)&sys_chdir) {
 736             sys_call_table = ptr - __NR_close;
 737             break;
 738         }
 739 #elif defined(EXPORTED_SYS_OPEN)
 740         if (ptr[0] == (unsigned long)&sys_exit
 741             && ptr[__NR_open - __NR_exit] == (unsigned long)&sys_open) {
 742             sys_call_table = ptr - __NR_exit;
 743             break;
 744         }
 745 #else /* EXPORTED_SYS_OPEN */
 746         break;
 747 #endif /* EXPORTED_KALLSYMS_ADDRESS */
 748     }
 749 #ifdef EXPORTED_KALLSYMS_ADDRESS
 750     ret =
 751         kallsyms_address_to_symbol((unsigned long)sys_call_table, &mod_name,
 752                                    &mod_start, &mod_end, &sec_name,
 753                                    &sec_start, &sec_end, &sym_name,
 754                                    &sym_start, &sym_end);
 755     if (ret && strcmp(sym_name, "sys_call_table"))
 756         sys_call_table = 0;
 757 #endif /* EXPORTED_KALLSYMS_ADDRESS */
 758     if (!sys_call_table) {
 759         printf("Failed to find address of sys_call_table\n");
 760     } else {
 761         printf("Found sys_call_table at %lx\n", (unsigned long)sys_call_table);
 762 #if defined(AFS_SPARC64_LINUX20_ENV) || defined(AFS_S390X_LINUX24_ENV)
 763         error cant support this yet.;
 764 #endif /* AFS_SPARC64_LINUX20_ENV */
 765 #endif /* EXPORTED_SYS_CALL_TABLE */
 766
 767 #ifdef AFS_AMD64_LINUX20_ENV
 768 #ifndef EXPORTED_IA32_SYS_CALL_TABLE
 769         ia32_sys_call_table = 0;
 770 #ifdef EXPORTED_KALLSYMS_SYMBOL
 771         ret = 1;
 772         token = 0;
 773         while (ret) {
 774             sym_start = 0;
 775             ret = kallsyms_symbol_to_address("ia32_sys_call_table", &token,
 776                                              &mod_name, &mod_start, &mod_end,
 777                                              &sec_name, &sec_start, &sec_end,
 778                                              &sym_name, &sym_start, &sym_end);
 779             if (ret && !strcmp(mod_name, "kernel"))
 780                 break;
 781         }
 782         if (ret && sym_start) {
 783             ia32_sys_call_table = sym_start;
 784         }
 785 #else /* EXPORTED_KALLSYMS_SYMBOL */
 786 #ifdef EXPORTED_KALLSYMS_ADDRESS
 787         ret = kallsyms_address_to_symbol((unsigned long)
 788                                          &interruptible_sleep_on,
 789                                          &mod_name, &mod_start, &mod_end,
 790                                          &sec_name, &sec_start, &sec_end,
 791                                          &sym_name, &sym_start, &sym_end);
 792         ptr = (unsigned long *)sec_start;
 793         datalen = (sec_end - sec_start) / sizeof(unsigned long);
 794 #else /* EXPORTED_KALLSYMS_ADDRESS */
 795 #if defined(AFS_AMD64_LINUX20_ENV)
 796         ptr = (unsigned long *)&interruptible_sleep_on;
 797         datalen = 0x180000 / sizeof(ptr);
 798 #else /* AFS_AMD64_LINUX20_ENV */
 799         ptr = (unsigned long *)&interruptible_sleep_on;
 800         datalen = 16384;
 801 #endif /* AFS_AMD64_LINUX20_ENV */
 802 #endif /* EXPORTED_KALLSYMS_ADDRESS */
 803         for (offset = 0; offset < datalen; ptr++, offset++) {
 804             if (ptr[0] == (unsigned long)&sys_exit
 805                 && ptr[__NR_ia32_open - __NR_ia32_exit] ==
 806                 (unsigned long)&sys_open) {
 807                     ia32_sys_call_table = ptr - __NR_ia32_exit;
 808                     break;
 809             }
 810         }
 811 #ifdef EXPORTED_KALLSYMS_ADDRESS
 812         ret = kallsyms_address_to_symbol((unsigned long)ia32_sys_call_table,
 813                                          &mod_name, &mod_start, &mod_end,
 814                                          &sec_name, &sec_start, &sec_end,
 815                                          &sym_name, &sym_start, &sym_end);
 816         if (ret && strcmp(sym_name, "ia32_sys_call_table"))
 817             ia32_sys_call_table = 0;
 818 #endif /* EXPORTED_KALLSYMS_ADDRESS */
 819 #endif /* EXPORTED_KALLSYMS_SYMBOL */
 820         if (!ia32_sys_call_table) {
 821             printf("Warning: Failed to find address of ia32_sys_call_table\n");
 822         } else {
 823             printf("Found ia32_sys_call_table at %lx\n", (unsigned long)ia32_sys_call_table);
 824         }
 825 #else
 826         printf("Found ia32_sys_call_table at %lx\n", (unsigned long)ia32_sys_call_table);
 827 #endif /* IA32_SYS_CALL_TABLE */
 828 #endif
 829
 830         /* Initialize pointers to kernel syscalls. */
 831 #if !defined(AFS_LINUX24_ENV)
 832         sys_settimeofdayp = SYSCALL2POINTER sys_call_table[_S(__NR_settimeofday)];
 833 #endif /* AFS_IA64_LINUX20_ENV */
 834
 835         /* setup AFS entry point. */
 836         if (
 837 #if defined(AFS_IA64_LINUX20_ENV)
 838                 SYSCALL2POINTER sys_call_table[__NR_afs_syscall - 1024]
 839 #else
 840                 SYSCALL2POINTER sys_call_table[_S(__NR_afs_syscall)]
 841 #endif
 842                 == afs_syscall) {
 843             printf("AFS syscall entry point already in use!\n");
 844             return -EBUSY;
 845         }
 846 #if defined(AFS_IA64_LINUX20_ENV)
 847         afs_ni_syscall = sys_call_table[__NR_afs_syscall - 1024];
 848         sys_call_table[__NR_afs_syscall - 1024] =
 849                 POINTER2SYSCALL((struct fptr *)afs_syscall_stub)->ip;
 850 #else /* AFS_IA64_LINUX20_ENV */
 851         afs_ni_syscall = sys_call_table[_S(__NR_afs_syscall)];
 852         sys_call_table[_S(__NR_afs_syscall)] = POINTER2SYSCALL afs_syscall;
 853 #ifdef AFS_SPARC64_LINUX20_ENV
 854         afs_ni_syscall32 = sys_call_table32[__NR_afs_syscall];
 855         sys_call_table32[__NR_afs_syscall] = POINTER2SYSCALL afs_syscall32;
 856 #endif
 857 #endif /* AFS_IA64_LINUX20_ENV */
 858 #ifdef AFS_AMD64_LINUX20_ENV
 859         if (ia32_sys_call_table) {
 860             ia32_ni_syscall = ia32_sys_call_table[__NR_ia32_afs_syscall];
 861             ia32_sys_call_table[__NR_ia32_afs_syscall] =
 862                     POINTER2SYSCALL afs_syscall;
 863         }
 864 #endif /* AFS_S390_LINUX22_ENV */
 865 #ifndef EXPORTED_SYS_CALL_TABLE
 866     }
 867 #endif /* EXPORTED_SYS_CALL_TABLE */
 868     osi_Init();
 869     register_filesystem(&afs_fs_type);
 870
 871     /* Intercept setgroups calls */
 872     if (sys_call_table) {
 873 #if defined(AFS_IA64_LINUX20_ENV)
 874     sys_setgroupsp = (void *)&sys_setgroups;
 875
 876     ((struct fptr *)sys_setgroupsp)->ip =
 877         SYSCALL2POINTER sys_call_table[__NR_setgroups - 1024];
 878     ((struct fptr *)sys_setgroupsp)->gp = kernel_gp;
 879
 880     sys_call_table[__NR_setgroups - 1024] =
 881         POINTER2SYSCALL((struct fptr *)afs_xsetgroups_stub)->ip;
 882 #else /* AFS_IA64_LINUX20_ENV */
 883     sys_setgroupsp = SYSCALL2POINTER sys_call_table[_S(__NR_setgroups)];
 884     sys_call_table[_S(__NR_setgroups)] = POINTER2SYSCALL afs_xsetgroups;
 885 #ifdef AFS_SPARC64_LINUX20_ENV
 886     sys32_setgroupsp = SYSCALL2POINTER sys_call_table32[__NR_setgroups];
 887     sys_call_table32[__NR_setgroups] = POINTER2SYSCALL afs32_xsetgroups;
 888 #endif /* AFS_SPARC64_LINUX20_ENV */
 889 #if defined(__NR_setgroups32)
 890     sys_setgroups32p = SYSCALL2POINTER sys_call_table[__NR_setgroups32];
 891     sys_call_table[__NR_setgroups32] = POINTER2SYSCALL afs_xsetgroups32;
 892 #ifdef AFS_SPARC64_LINUX20_ENV
 893         sys32_setgroups32p =
 894             SYSCALL2POINTER sys_call_table32[__NR_setgroups32];
 895         sys_call_table32[__NR_setgroups32] =
 896             POINTER2SYSCALL afs32_xsetgroups32;
 897 #endif /* AFS_SPARC64_LINUX20_ENV */
 898 #endif /* __NR_setgroups32 */
 899 #ifdef AFS_AMD64_LINUX20_ENV
 900     if (ia32_sys_call_table) {
 901         sys32_setgroupsp =
 902             SYSCALL2POINTER ia32_sys_call_table[__NR_ia32_setgroups];
 903         ia32_sys_call_table[__NR_ia32_setgroups] =
 904             POINTER2SYSCALL afs32_xsetgroups;
 905 #if defined(__NR_ia32_setgroups32)
 906         sys32_setgroups32p =
 907             SYSCALL2POINTER ia32_sys_call_table[__NR_ia32_setgroups32];
 908         ia32_sys_call_table[__NR_ia32_setgroups32] =
 909             POINTER2SYSCALL afs32_xsetgroups32;
 910 #endif /* __NR_ia32_setgroups32 */
 911     }
 912 #endif /* AFS_AMD64_LINUX20_ENV */
 913 #endif /* AFS_IA64_LINUX20_ENV */
 914
 915     }
 916
 917     osi_sysctl_init();
 918     afsproc_init();
 919
 920     return 0;
 921 }
 922
 923 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 924 void __exit
 925 afs_cleanup(void)
 926 #else
 927 void
 928 cleanup_module(void)
 929 #endif
 930 {
 931     osi_sysctl_clean();
 932     if (sys_call_table) {
 933 #if defined(AFS_IA64_LINUX20_ENV)
 934     sys_call_table[__NR_setgroups - 1024] =
 935         POINTER2SYSCALL((struct fptr *)sys_setgroupsp)->ip;
 936     sys_call_table[__NR_afs_syscall - 1024] = afs_ni_syscall;
 937 #else /* AFS_IA64_LINUX20_ENV */
 938     sys_call_table[_S(__NR_setgroups)] = POINTER2SYSCALL sys_setgroupsp;
 939     sys_call_table[_S(__NR_afs_syscall)] = afs_ni_syscall;
 940 # ifdef AFS_SPARC64_LINUX20_ENV
 941     sys_call_table32[__NR_setgroups] = POINTER2SYSCALL sys32_setgroupsp;
 942     sys_call_table32[__NR_afs_syscall] = afs_ni_syscall32;
 943 # endif
 944 # if defined(__NR_setgroups32)
 945     sys_call_table[__NR_setgroups32] = POINTER2SYSCALL sys_setgroups32p;
 946 # ifdef AFS_SPARC64_LINUX20_ENV
 947         sys_call_table32[__NR_setgroups32] =
 948             POINTER2SYSCALL sys32_setgroups32p;
 949 # endif
 950 # endif
 951 #endif /* AFS_IA64_LINUX20_ENV */
 952 #ifdef AFS_AMD64_LINUX20_ENV
 953     if (ia32_sys_call_table) {
 954         ia32_sys_call_table[__NR_ia32_setgroups] =
 955             POINTER2SYSCALL sys32_setgroupsp;
 956         ia32_sys_call_table[__NR_ia32_afs_syscall] =
 957             POINTER2SYSCALL ia32_ni_syscall;
 958 # if defined(__NR_setgroups32)
 959         ia32_sys_call_table[__NR_ia32_setgroups32] =
 960             POINTER2SYSCALL sys32_setgroups32p;
 961 #endif
 962     }
 963 #endif
 964     }
 965     unregister_filesystem(&afs_fs_type);
 966
 967     osi_linux_free_inode_pages();       /* Invalidate all pages using AFS inodes. */
 968     osi_linux_free_afs_memory();
 969
 970     afsproc_exit();
 971     return;
 972 }
 973
 974 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 975 module_init(afs_init);
 976 module_exit(afs_cleanup);
 977 #endif
 978
 979
 980 #if !defined(AFS_LINUX24_ENV)
 981 static long
 982 get_page_offset(void)
 983 {
 984 #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)
 985     return PAGE_OFFSET;
 986 #else
 987     struct task_struct *p, *q;
 988
 989     /* search backward thru the circular list */
 990 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 991     read_lock(&tasklist_lock);
 992 #endif
 993     /* search backward thru the circular list */
 994 #ifdef DEFINED_PREV_TASK
 995     for (q = current; p = q; q = prev_task(p)) {
 996 #else
 997     for (p = current; p; p = p->prev_task) {
 998 #endif
 999         if (p->pid == 1) {
1000 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
1001             read_unlock(&tasklist_lock);
1002 #endif
1003             return p->addr_limit.seg;
1004         }
1005     }
1006
1007 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
1008     read_unlock(&tasklist_lock);
1009 #endif
1010     return 0;
1011 #endif
1012 }
1013 #endif /* !AFS_LINUX24_ENV */