2 * Copyright 2000, International Business Machines Corporation and others.
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
11 * Linux module support routines.
14 #include <afsconfig.h>
15 #include "afs/param.h"
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. */
26 #ifdef AFS_AMD64_LINUX20_ENV
27 #include "../asm/ia32_unistd.h"
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>
37 #ifdef HAVE_KERNEL_LINUX_SEQ_FILE_H
38 #include <linux/seq_file.h>
41 extern struct file_system_type afs_fs_type;
43 #if !defined(AFS_LINUX24_ENV)
44 static long get_page_offset(void);
47 #if defined(AFS_LINUX24_ENV)
48 DECLARE_MUTEX(afs_global_lock);
50 struct semaphore afs_global_lock = MUTEX;
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 */
57 static inline int afs_ioctl(struct inode *, struct file *, unsigned int,
59 #if defined(HAVE_UNLOCKED_IOCTL) || defined(HAVE_COMPAT_IOCTL)
60 static long afs_unlocked_ioctl(struct file *, unsigned int, unsigned long);
63 static struct file_operations afs_syscall_fops = {
64 #ifdef HAVE_UNLOCKED_IOCTL
65 .unlocked_ioctl = afs_unlocked_ioctl,
69 #ifdef HAVE_COMPAT_IOCTL
70 .compat_ioctl = afs_unlocked_ioctl,
74 #ifdef HAVE_KERNEL_LINUX_SEQ_FILE_H
75 static void *c_start(struct seq_file *m, loff_t *pos)
77 struct afs_q *cq, *tq;
80 ObtainReadLock(&afs_xcell);
81 for (cq = CellLRU.next; cq != &CellLRU; cq = tq) {
93 static void *c_next(struct seq_file *m, void *p, loff_t *pos)
95 struct afs_q *cq = p, *tq;
106 static void c_stop(struct seq_file *m, void *p)
108 ReleaseReadLock(&afs_xcell);
111 static int c_show(struct seq_file *m, void *p)
113 struct afs_q *cq = p;
114 struct cell *tc = QTOC(cq);
117 seq_printf(m, ">%s #(%d/%d)\n", tc->cellName,
118 tc->cellNum, tc->cellIndex);
120 for (j = 0; j < MAXCELLHOSTS; j++) {
123 if (!tc->cellHosts[j]) break;
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));
133 static struct seq_operations afs_csdb_op = {
140 static int afs_csdb_open(struct inode *inode, struct file *file)
142 return seq_open(file, &afs_csdb_op);
145 static struct file_operations afs_csdb_operations = {
146 .open = afs_csdb_open,
149 .release = seq_release,
152 #else /* HAVE_KERNEL_LINUX_SEQ_FILE_H */
155 csdbproc_info(char *buffer, char **start, off_t offset, int
161 struct afs_q *cq, *tq;
164 /* 90 - 64 cellname, 10 for 32 bit num and index, plus
169 ObtainReadLock(&afs_xcell);
171 for (cq = CellLRU.next; cq != &CellLRU; cq = tq) {
172 tc = QTOC(cq); tq = QNext(cq);
179 sprintf(temp, ">%s #(%d/%d)\n", tc->cellName,
180 tc->cellNum, tc->cellIndex);
181 sprintf(buffer + len, "%-89s\n", temp);
183 if (pos >= offset+length) {
184 ReleaseReadLock(&afs_xcell);
189 for (cnt = 0; cnt < MAXCELLHOSTS; cnt++) {
190 if (!tc->cellHosts[cnt]) break;
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);
203 if (pos >= offset+length) {
204 ReleaseReadLock(&afs_xcell);
211 ReleaseReadLock(&afs_xcell);
214 *start = buffer + len - (pos - offset);
221 #endif /* HAVE_KERNEL_LINUX_SEQ_FILE_H */
224 peerproc_read(char *buffer, char **start, off_t offset, int count,
225 int *eof, void *data)
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 */
256 *start = buffer + offset;
257 if ((len -= offset) > count)
264 rxstatsproc_read(char *buffer, char **start, off_t offset, int count,
265 int *eof, void *data)
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);
325 *start = buffer + offset;
326 if ((len -= offset) > count)
333 rxproc_read(char *buffer, char **start, off_t offset, int count,
334 int *eof, void *data)
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]);
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);
363 len += sprintf(buffer + len, "rxevent_nFree = %d\nrxevent_nPosted = %d\n", rxevent_nFree, rxevent_nPosted);
370 *start = buffer + offset;
371 if ((len -= offset) > count)
378 connproc_read(char *buffer, char **start, off_t offset, int count,
379 int *eof, void *data)
382 struct rx_connection *sep;
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 */
423 *start = buffer + offset;
424 if ((len -= offset) > count)
431 servicesproc_read(char *buffer, char **start, off_t offset, int count,
432 int *eof, void *data)
435 struct rx_service *sentry;
438 for (i = 0, j = 0; i < RX_MAX_SERVICES; i++) {
439 if ((sentry = rx_services[i])) {
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);
458 *start = buffer + offset;
459 if ((len -= offset) > count)
466 callproc_read(char *buffer, char **start, off_t offset, int count,
467 int *eof, void *data)
470 struct rx_connection *sep;
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];
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,
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,
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,
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,
529 #endif /* RX_ENABLE_LOCKS */
530 len += sprintf(buffer + len, "\t: MTU=%d\n", call->MTU);
541 *start = buffer + offset;
542 if ((len -= offset) > count)
548 static struct proc_dir_entry *openafs_procfs;
549 #if defined(NEED_IOCTL32) && !defined(HAVE_COMPAT_IOCTL)
550 static int ioctl32_done;
553 #ifdef AFS_LINUX24_ENV
557 struct proc_dir_entry *entry2;
558 struct proc_dir_entry *entry1;
559 struct proc_dir_entry *entry;
561 openafs_procfs = proc_mkdir(PROC_FSDIRNAME, proc_root_fs);
562 entry1 = create_proc_entry(PROC_SYSCALL_NAME, 0666, openafs_procfs);
564 entry1->proc_fops = &afs_syscall_fops;
566 entry1->owner = THIS_MODULE;
568 #ifdef HAVE_KERNEL_LINUX_SEQ_FILE_H
569 entry2 = create_proc_entry(PROC_CELLSERVDB_NAME, 0, openafs_procfs);
571 entry2->proc_fops = &afs_csdb_operations;
573 entry2 = create_proc_info_entry(PROC_CELLSERVDB_NAME, (S_IFREG|S_IRUGO), openafs_procfs, csdbproc_info);
576 entry = create_proc_read_entry(PROC_PEER_NAME, (S_IFREG|S_IRUGO), openafs_procfs, peerproc_read, NULL);
578 entry = create_proc_read_entry(PROC_CONN_NAME, (S_IFREG|S_IRUGO), openafs_procfs, connproc_read, NULL);
580 entry = create_proc_read_entry(PROC_CALL_NAME, (S_IFREG|S_IRUGO), openafs_procfs, connproc_read, NULL);
582 entry = create_proc_read_entry(PROC_RX_NAME, (S_IFREG|S_IRUGO), openafs_procfs, rxproc_read, NULL);
584 entry = create_proc_read_entry(PROC_SERVICES_NAME, (S_IFREG|S_IRUGO), openafs_procfs, servicesproc_read, NULL);
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)
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)
609 unregister_ioctl32_conversion(VIOC_SYSCALL32);
614 extern asmlinkage long
615 afs_syscall(long syscall, long parm1, long parm2, long parm3, long parm4);
618 afs_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
622 struct afsprocdata sysargs;
624 struct afsprocdata32 sysargs32;
627 if (cmd != VIOC_SYSCALL && cmd != VIOC_SYSCALL32) return -EINVAL;
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))
638 if (current->thread.flags & THREAD_IA32)
640 #elif defined(AFS_PPC64_LINUX20_ENV)
641 #ifdef AFS_PPC64_LINUX26_ENV
642 if (current->thread_info->flags & _TIF_32BIT)
644 if (current->thread.flags & PPC_FLAG_32BIT)
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)
651 #error Not done for this linux type
654 if (copy_from_user(&sysargs32, (void *)arg,
655 sizeof(struct afsprocdata32)))
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);
666 if (copy_from_user(&sysargs, (void *)arg, sizeof(struct afsprocdata)))
669 return afs_syscall(sysargs.syscall, sysargs.param1,
670 sysargs.param2, sysargs.param3, sysargs.param4);
674 #if defined(HAVE_UNLOCKED_IOCTL) || defined(HAVE_COMPAT_IOCTL)
675 static long afs_unlocked_ioctl(struct file *file, unsigned int cmd,
677 return afs_ioctl(FILE_INODE(file), file, cmd, arg);
681 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
690 RWLOCK_INIT(&afs_xosi, "afs_xosi");
692 #if !defined(AFS_LINUX24_ENV)
693 /* obtain PAGE_OFFSET value */
694 afs_linux_page_offset = get_page_offset();
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..");
702 #endif /* AFS_S390_LINUX22_ENV */
703 #endif /* !defined(AFS_LINUX24_ENV) */
707 err = osi_syscall_init();
710 err = afs_init_inodecache();
713 register_filesystem(&afs_fs_type);
715 #ifdef AFS_LINUX24_ENV
722 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
732 unregister_filesystem(&afs_fs_type);
734 afs_destroy_inodecache();
735 osi_linux_free_afs_memory();
737 #ifdef AFS_LINUX24_ENV
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);
750 #if !defined(AFS_LINUX24_ENV)
752 get_page_offset(void)
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)
757 struct task_struct *p, *q;
759 /* search backward thru the circular list */
760 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
761 read_lock(&tasklist_lock);
763 /* search backward thru the circular list */
764 #ifdef DEFINED_PREV_TASK
765 for (q = current; p = q; q = prev_task(p)) {
767 for (p = current; p; p = p->prev_task) {
770 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
771 read_unlock(&tasklist_lock);
773 return p->addr_limit.seg;
777 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
778 read_unlock(&tasklist_lock);
783 #endif /* !AFS_LINUX24_ENV */