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Merge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6
[deliverable/linux.git] / arch / mips / kernel / sysirix.c
1 /*
2 * sysirix.c: IRIX system call emulation.
3 *
4 * Copyright (C) 1996 David S. Miller
5 * Copyright (C) 1997 Miguel de Icaza
6 * Copyright (C) 1997, 1998, 1999, 2000 Ralf Baechle
7 */
8 #include <linux/kernel.h>
9 #include <linux/sched.h>
10 #include <linux/binfmts.h>
11 #include <linux/capability.h>
12 #include <linux/highuid.h>
13 #include <linux/pagemap.h>
14 #include <linux/mm.h>
15 #include <linux/mman.h>
16 #include <linux/slab.h>
17 #include <linux/swap.h>
18 #include <linux/errno.h>
19 #include <linux/time.h>
20 #include <linux/timex.h>
21 #include <linux/times.h>
22 #include <linux/elf.h>
23 #include <linux/msg.h>
24 #include <linux/shm.h>
25 #include <linux/smp.h>
26 #include <linux/smp_lock.h>
27 #include <linux/utsname.h>
28 #include <linux/file.h>
29 #include <linux/vfs.h>
30 #include <linux/namei.h>
31 #include <linux/socket.h>
32 #include <linux/security.h>
33 #include <linux/syscalls.h>
34 #include <linux/resource.h>
35
36 #include <asm/ptrace.h>
37 #include <asm/page.h>
38 #include <asm/uaccess.h>
39 #include <asm/inventory.h>
40
41 /* 2,191 lines of complete and utter shit coming up... */
42
43 extern int max_threads;
44
45 /* The sysmp commands supported thus far. */
46 #define MP_NPROCS 1 /* # processor in complex */
47 #define MP_NAPROCS 2 /* # active processors in complex */
48 #define MP_PGSIZE 14 /* Return system page size in v1. */
49
50 asmlinkage int irix_sysmp(struct pt_regs *regs)
51 {
52 unsigned long cmd;
53 int base = 0;
54 int error = 0;
55
56 if(regs->regs[2] == 1000)
57 base = 1;
58 cmd = regs->regs[base + 4];
59 switch(cmd) {
60 case MP_PGSIZE:
61 error = PAGE_SIZE;
62 break;
63 case MP_NPROCS:
64 case MP_NAPROCS:
65 error = num_online_cpus();
66 break;
67 default:
68 printk("SYSMP[%s:%d]: Unsupported opcode %d\n",
69 current->comm, current->pid, (int)cmd);
70 error = -EINVAL;
71 break;
72 }
73
74 return error;
75 }
76
77 /* The prctl commands. */
78 #define PR_MAXPROCS 1 /* Tasks/user. */
79 #define PR_ISBLOCKED 2 /* If blocked, return 1. */
80 #define PR_SETSTACKSIZE 3 /* Set largest task stack size. */
81 #define PR_GETSTACKSIZE 4 /* Get largest task stack size. */
82 #define PR_MAXPPROCS 5 /* Num parallel tasks. */
83 #define PR_UNBLKONEXEC 6 /* When task exec/exit's, unblock. */
84 #define PR_SETEXITSIG 8 /* When task exit's, set signal. */
85 #define PR_RESIDENT 9 /* Make task unswappable. */
86 #define PR_ATTACHADDR 10 /* (Re-)Connect a vma to a task. */
87 #define PR_DETACHADDR 11 /* Disconnect a vma from a task. */
88 #define PR_TERMCHILD 12 /* Kill child if the parent dies. */
89 #define PR_GETSHMASK 13 /* Get the sproc() share mask. */
90 #define PR_GETNSHARE 14 /* Number of share group members. */
91 #define PR_COREPID 15 /* Add task pid to name when it core. */
92 #define PR_ATTACHADDRPERM 16 /* (Re-)Connect vma, with specified prot. */
93 #define PR_PTHREADEXIT 17 /* Kill a pthread, only for IRIX 6.[234] */
94
95 asmlinkage int irix_prctl(unsigned option, ...)
96 {
97 va_list args;
98 int error = 0;
99
100 va_start(args, option);
101 switch (option) {
102 case PR_MAXPROCS:
103 printk("irix_prctl[%s:%d]: Wants PR_MAXPROCS\n",
104 current->comm, current->pid);
105 error = max_threads;
106 break;
107
108 case PR_ISBLOCKED: {
109 struct task_struct *task;
110
111 printk("irix_prctl[%s:%d]: Wants PR_ISBLOCKED\n",
112 current->comm, current->pid);
113 read_lock(&tasklist_lock);
114 task = find_task_by_pid(va_arg(args, pid_t));
115 error = -ESRCH;
116 if (error)
117 error = (task->run_list.next != NULL);
118 read_unlock(&tasklist_lock);
119 /* Can _your_ OS find this out that fast? */
120 break;
121 }
122
123 case PR_SETSTACKSIZE: {
124 long value = va_arg(args, long);
125
126 printk("irix_prctl[%s:%d]: Wants PR_SETSTACKSIZE<%08lx>\n",
127 current->comm, current->pid, (unsigned long) value);
128 if (value > RLIM_INFINITY)
129 value = RLIM_INFINITY;
130 if (capable(CAP_SYS_ADMIN)) {
131 task_lock(current->group_leader);
132 current->signal->rlim[RLIMIT_STACK].rlim_max =
133 current->signal->rlim[RLIMIT_STACK].rlim_cur = value;
134 task_unlock(current->group_leader);
135 error = value;
136 break;
137 }
138 task_lock(current->group_leader);
139 if (value > current->signal->rlim[RLIMIT_STACK].rlim_max) {
140 error = -EINVAL;
141 task_unlock(current->group_leader);
142 break;
143 }
144 current->signal->rlim[RLIMIT_STACK].rlim_cur = value;
145 task_unlock(current->group_leader);
146 error = value;
147 break;
148 }
149
150 case PR_GETSTACKSIZE:
151 printk("irix_prctl[%s:%d]: Wants PR_GETSTACKSIZE\n",
152 current->comm, current->pid);
153 error = current->signal->rlim[RLIMIT_STACK].rlim_cur;
154 break;
155
156 case PR_MAXPPROCS:
157 printk("irix_prctl[%s:%d]: Wants PR_MAXPROCS\n",
158 current->comm, current->pid);
159 error = 1;
160 break;
161
162 case PR_UNBLKONEXEC:
163 printk("irix_prctl[%s:%d]: Wants PR_UNBLKONEXEC\n",
164 current->comm, current->pid);
165 error = -EINVAL;
166 break;
167
168 case PR_SETEXITSIG:
169 printk("irix_prctl[%s:%d]: Wants PR_SETEXITSIG\n",
170 current->comm, current->pid);
171
172 /* We can probably play some game where we set the task
173 * exit_code to some non-zero value when this is requested,
174 * and check whether exit_code is already set in do_exit().
175 */
176 error = -EINVAL;
177 break;
178
179 case PR_RESIDENT:
180 printk("irix_prctl[%s:%d]: Wants PR_RESIDENT\n",
181 current->comm, current->pid);
182 error = 0; /* Compatibility indeed. */
183 break;
184
185 case PR_ATTACHADDR:
186 printk("irix_prctl[%s:%d]: Wants PR_ATTACHADDR\n",
187 current->comm, current->pid);
188 error = -EINVAL;
189 break;
190
191 case PR_DETACHADDR:
192 printk("irix_prctl[%s:%d]: Wants PR_DETACHADDR\n",
193 current->comm, current->pid);
194 error = -EINVAL;
195 break;
196
197 case PR_TERMCHILD:
198 printk("irix_prctl[%s:%d]: Wants PR_TERMCHILD\n",
199 current->comm, current->pid);
200 error = -EINVAL;
201 break;
202
203 case PR_GETSHMASK:
204 printk("irix_prctl[%s:%d]: Wants PR_GETSHMASK\n",
205 current->comm, current->pid);
206 error = -EINVAL; /* Until I have the sproc() stuff in. */
207 break;
208
209 case PR_GETNSHARE:
210 error = 0; /* Until I have the sproc() stuff in. */
211 break;
212
213 case PR_COREPID:
214 printk("irix_prctl[%s:%d]: Wants PR_COREPID\n",
215 current->comm, current->pid);
216 error = -EINVAL;
217 break;
218
219 case PR_ATTACHADDRPERM:
220 printk("irix_prctl[%s:%d]: Wants PR_ATTACHADDRPERM\n",
221 current->comm, current->pid);
222 error = -EINVAL;
223 break;
224
225 default:
226 printk("irix_prctl[%s:%d]: Non-existant opcode %d\n",
227 current->comm, current->pid, option);
228 error = -EINVAL;
229 break;
230 }
231 va_end(args);
232
233 return error;
234 }
235
236 #undef DEBUG_PROCGRPS
237
238 extern unsigned long irix_mapelf(int fd, struct elf_phdr __user *user_phdrp, int cnt);
239 extern char *prom_getenv(char *name);
240 extern long prom_setenv(char *name, char *value);
241
242 /* The syssgi commands supported thus far. */
243 #define SGI_SYSID 1 /* Return unique per-machine identifier. */
244 #define SGI_INVENT 5 /* Fetch inventory */
245 # define SGI_INV_SIZEOF 1
246 # define SGI_INV_READ 2
247 #define SGI_RDNAME 6 /* Return string name of a process. */
248 #define SGI_SETNVRAM 8 /* Set PROM variable. */
249 #define SGI_GETNVRAM 9 /* Get PROM variable. */
250 #define SGI_SETPGID 21 /* Set process group id. */
251 #define SGI_SYSCONF 22 /* POSIX sysconf garbage. */
252 #define SGI_PATHCONF 24 /* POSIX sysconf garbage. */
253 #define SGI_SETGROUPS 40 /* POSIX sysconf garbage. */
254 #define SGI_GETGROUPS 41 /* POSIX sysconf garbage. */
255 #define SGI_RUSAGE 56 /* BSD style rusage(). */
256 #define SGI_SSYNC 62 /* Synchronous fs sync. */
257 #define SGI_GETSID 65 /* SysVr4 get session id. */
258 #define SGI_ELFMAP 68 /* Map an elf image. */
259 #define SGI_TOSSTSAVE 108 /* Toss saved vma's. */
260 #define SGI_FP_BCOPY 129 /* Should FPU bcopy be used on this machine? */
261 #define SGI_PHYSP 1011 /* Translate virtual into physical page. */
262
263 asmlinkage int irix_syssgi(struct pt_regs *regs)
264 {
265 unsigned long cmd;
266 int retval, base = 0;
267
268 if (regs->regs[2] == 1000)
269 base = 1;
270
271 cmd = regs->regs[base + 4];
272 switch(cmd) {
273 case SGI_SYSID: {
274 char __user *buf = (char __user *) regs->regs[base + 5];
275
276 /* XXX Use ethernet addr.... */
277 retval = clear_user(buf, 64) ? -EFAULT : 0;
278 break;
279 }
280 #if 0
281 case SGI_RDNAME: {
282 int pid = (int) regs->regs[base + 5];
283 char __user *buf = (char __user *) regs->regs[base + 6];
284 struct task_struct *p;
285 char tcomm[sizeof(current->comm)];
286
287 read_lock(&tasklist_lock);
288 p = find_task_by_pid(pid);
289 if (!p) {
290 read_unlock(&tasklist_lock);
291 retval = -ESRCH;
292 break;
293 }
294 get_task_comm(tcomm, p);
295 read_unlock(&tasklist_lock);
296
297 /* XXX Need to check sizes. */
298 retval = copy_to_user(buf, tcomm, sizeof(tcomm)) ? -EFAULT : 0;
299 break;
300 }
301
302 case SGI_GETNVRAM: {
303 char __user *name = (char __user *) regs->regs[base+5];
304 char __user *buf = (char __user *) regs->regs[base+6];
305 char *value;
306 return -EINVAL; /* til I fix it */
307 value = prom_getenv(name); /* PROM lock? */
308 if (!value) {
309 retval = -EINVAL;
310 break;
311 }
312 /* Do I strlen() for the length? */
313 retval = copy_to_user(buf, value, 128) ? -EFAULT : 0;
314 break;
315 }
316
317 case SGI_SETNVRAM: {
318 char __user *name = (char __user *) regs->regs[base+5];
319 char __user *value = (char __user *) regs->regs[base+6];
320 return -EINVAL; /* til I fix it */
321 retval = prom_setenv(name, value);
322 /* XXX make sure retval conforms to syssgi(2) */
323 printk("[%s:%d] setnvram(\"%s\", \"%s\"): retval %d",
324 current->comm, current->pid, name, value, retval);
325 /* if (retval == PROM_ENOENT)
326 retval = -ENOENT; */
327 break;
328 }
329 #endif
330
331 case SGI_SETPGID: {
332 #ifdef DEBUG_PROCGRPS
333 printk("[%s:%d] setpgid(%d, %d) ",
334 current->comm, current->pid,
335 (int) regs->regs[base + 5], (int)regs->regs[base + 6]);
336 #endif
337 retval = sys_setpgid(regs->regs[base + 5], regs->regs[base + 6]);
338
339 #ifdef DEBUG_PROCGRPS
340 printk("retval=%d\n", retval);
341 #endif
342 }
343
344 case SGI_SYSCONF: {
345 switch(regs->regs[base + 5]) {
346 case 1:
347 retval = (MAX_ARG_PAGES >> 4); /* XXX estimate... */
348 goto out;
349 case 2:
350 retval = max_threads;
351 goto out;
352 case 3:
353 retval = HZ;
354 goto out;
355 case 4:
356 retval = NGROUPS_MAX;
357 goto out;
358 case 5:
359 retval = NR_OPEN;
360 goto out;
361 case 6:
362 retval = 1;
363 goto out;
364 case 7:
365 retval = 1;
366 goto out;
367 case 8:
368 retval = 199009;
369 goto out;
370 case 11:
371 retval = PAGE_SIZE;
372 goto out;
373 case 12:
374 retval = 4;
375 goto out;
376 case 25:
377 case 26:
378 case 27:
379 case 28:
380 case 29:
381 case 30:
382 retval = 0;
383 goto out;
384 case 31:
385 retval = 32;
386 goto out;
387 default:
388 retval = -EINVAL;
389 goto out;
390 };
391 }
392
393 case SGI_SETGROUPS:
394 retval = sys_setgroups((int) regs->regs[base + 5],
395 (gid_t __user *) regs->regs[base + 6]);
396 break;
397
398 case SGI_GETGROUPS:
399 retval = sys_getgroups((int) regs->regs[base + 5],
400 (gid_t __user *) regs->regs[base + 6]);
401 break;
402
403 case SGI_RUSAGE: {
404 struct rusage __user *ru = (struct rusage __user *) regs->regs[base + 6];
405
406 switch((int) regs->regs[base + 5]) {
407 case 0:
408 /* rusage self */
409 retval = getrusage(current, RUSAGE_SELF, ru);
410 goto out;
411
412 case -1:
413 /* rusage children */
414 retval = getrusage(current, RUSAGE_CHILDREN, ru);
415 goto out;
416
417 default:
418 retval = -EINVAL;
419 goto out;
420 };
421 }
422
423 case SGI_SSYNC:
424 sys_sync();
425 retval = 0;
426 break;
427
428 case SGI_GETSID:
429 #ifdef DEBUG_PROCGRPS
430 printk("[%s:%d] getsid(%d) ", current->comm, current->pid,
431 (int) regs->regs[base + 5]);
432 #endif
433 retval = sys_getsid(regs->regs[base + 5]);
434 #ifdef DEBUG_PROCGRPS
435 printk("retval=%d\n", retval);
436 #endif
437 break;
438
439 case SGI_ELFMAP:
440 retval = irix_mapelf((int) regs->regs[base + 5],
441 (struct elf_phdr __user *) regs->regs[base + 6],
442 (int) regs->regs[base + 7]);
443 break;
444
445 case SGI_TOSSTSAVE:
446 /* XXX We don't need to do anything? */
447 retval = 0;
448 break;
449
450 case SGI_FP_BCOPY:
451 retval = 0;
452 break;
453
454 case SGI_PHYSP: {
455 unsigned long addr = regs->regs[base + 5];
456 int __user *pageno = (int __user *) (regs->regs[base + 6]);
457 struct mm_struct *mm = current->mm;
458 pgd_t *pgdp;
459 pud_t *pudp;
460 pmd_t *pmdp;
461 pte_t *ptep;
462
463 down_read(&mm->mmap_sem);
464 pgdp = pgd_offset(mm, addr);
465 pudp = pud_offset(pgdp, addr);
466 pmdp = pmd_offset(pudp, addr);
467 ptep = pte_offset(pmdp, addr);
468 retval = -EINVAL;
469 if (ptep) {
470 pte_t pte = *ptep;
471
472 if (pte_val(pte) & (_PAGE_VALID | _PAGE_PRESENT)) {
473 /* b0rked on 64-bit */
474 retval = put_user((pte_val(pte) & PAGE_MASK) >>
475 PAGE_SHIFT, pageno);
476 }
477 }
478 up_read(&mm->mmap_sem);
479 break;
480 }
481
482 case SGI_INVENT: {
483 int arg1 = (int) regs->regs [base + 5];
484 void __user *buffer = (void __user *) regs->regs [base + 6];
485 int count = (int) regs->regs [base + 7];
486
487 switch (arg1) {
488 case SGI_INV_SIZEOF:
489 retval = sizeof (inventory_t);
490 break;
491 case SGI_INV_READ:
492 retval = dump_inventory_to_user (buffer, count);
493 break;
494 default:
495 retval = -EINVAL;
496 }
497 break;
498 }
499
500 default:
501 printk("irix_syssgi: Unsupported command %d\n", (int)cmd);
502 retval = -EINVAL;
503 break;
504 };
505
506 out:
507 return retval;
508 }
509
510 asmlinkage int irix_gtime(struct pt_regs *regs)
511 {
512 return get_seconds();
513 }
514
515 /*
516 * IRIX is completely broken... it returns 0 on success, otherwise
517 * ENOMEM.
518 */
519 asmlinkage int irix_brk(unsigned long brk)
520 {
521 unsigned long rlim;
522 unsigned long newbrk, oldbrk;
523 struct mm_struct *mm = current->mm;
524 int ret;
525
526 down_write(&mm->mmap_sem);
527 if (brk < mm->end_code) {
528 ret = -ENOMEM;
529 goto out;
530 }
531
532 newbrk = PAGE_ALIGN(brk);
533 oldbrk = PAGE_ALIGN(mm->brk);
534 if (oldbrk == newbrk) {
535 mm->brk = brk;
536 ret = 0;
537 goto out;
538 }
539
540 /*
541 * Always allow shrinking brk
542 */
543 if (brk <= mm->brk) {
544 mm->brk = brk;
545 do_munmap(mm, newbrk, oldbrk-newbrk);
546 ret = 0;
547 goto out;
548 }
549 /*
550 * Check against rlimit and stack..
551 */
552 rlim = current->signal->rlim[RLIMIT_DATA].rlim_cur;
553 if (rlim >= RLIM_INFINITY)
554 rlim = ~0;
555 if (brk - mm->end_code > rlim) {
556 ret = -ENOMEM;
557 goto out;
558 }
559
560 /*
561 * Check against existing mmap mappings.
562 */
563 if (find_vma_intersection(mm, oldbrk, newbrk+PAGE_SIZE)) {
564 ret = -ENOMEM;
565 goto out;
566 }
567
568 /*
569 * Ok, looks good - let it rip.
570 */
571 if (do_brk(oldbrk, newbrk-oldbrk) != oldbrk) {
572 ret = -ENOMEM;
573 goto out;
574 }
575 mm->brk = brk;
576 ret = 0;
577
578 out:
579 up_write(&mm->mmap_sem);
580 return ret;
581 }
582
583 asmlinkage int irix_getpid(struct pt_regs *regs)
584 {
585 regs->regs[3] = current->real_parent->pid;
586 return current->pid;
587 }
588
589 asmlinkage int irix_getuid(struct pt_regs *regs)
590 {
591 regs->regs[3] = current->euid;
592 return current->uid;
593 }
594
595 asmlinkage int irix_getgid(struct pt_regs *regs)
596 {
597 regs->regs[3] = current->egid;
598 return current->gid;
599 }
600
601 asmlinkage int irix_stime(int value)
602 {
603 int err;
604 struct timespec tv;
605
606 tv.tv_sec = value;
607 tv.tv_nsec = 0;
608 err = security_settime(&tv, NULL);
609 if (err)
610 return err;
611
612 write_seqlock_irq(&xtime_lock);
613 xtime.tv_sec = value;
614 xtime.tv_nsec = 0;
615 ntp_clear();
616 write_sequnlock_irq(&xtime_lock);
617
618 return 0;
619 }
620
621 static inline void jiffiestotv(unsigned long jiffies, struct timeval *value)
622 {
623 value->tv_usec = (jiffies % HZ) * (1000000 / HZ);
624 value->tv_sec = jiffies / HZ;
625 }
626
627 static inline void getitimer_real(struct itimerval *value)
628 {
629 register unsigned long val, interval;
630
631 interval = current->it_real_incr;
632 val = 0;
633 if (del_timer(&current->real_timer)) {
634 unsigned long now = jiffies;
635 val = current->real_timer.expires;
636 add_timer(&current->real_timer);
637 /* look out for negative/zero itimer.. */
638 if (val <= now)
639 val = now+1;
640 val -= now;
641 }
642 jiffiestotv(val, &value->it_value);
643 jiffiestotv(interval, &value->it_interval);
644 }
645
646 asmlinkage unsigned int irix_alarm(unsigned int seconds)
647 {
648 return alarm_setitimer(seconds);
649 }
650
651 asmlinkage int irix_pause(void)
652 {
653 current->state = TASK_INTERRUPTIBLE;
654 schedule();
655
656 return -EINTR;
657 }
658
659 /* XXX need more than this... */
660 asmlinkage int irix_mount(char __user *dev_name, char __user *dir_name,
661 unsigned long flags, char __user *type, void __user *data, int datalen)
662 {
663 printk("[%s:%d] irix_mount(%p,%p,%08lx,%p,%p,%d)\n",
664 current->comm, current->pid,
665 dev_name, dir_name, flags, type, data, datalen);
666
667 return sys_mount(dev_name, dir_name, type, flags, data);
668 }
669
670 struct irix_statfs {
671 short f_type;
672 long f_bsize, f_frsize, f_blocks, f_bfree, f_files, f_ffree;
673 char f_fname[6], f_fpack[6];
674 };
675
676 asmlinkage int irix_statfs(const char __user *path,
677 struct irix_statfs __user *buf, int len, int fs_type)
678 {
679 struct nameidata nd;
680 struct kstatfs kbuf;
681 int error, i;
682
683 /* We don't support this feature yet. */
684 if (fs_type) {
685 error = -EINVAL;
686 goto out;
687 }
688 if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statfs))) {
689 error = -EFAULT;
690 goto out;
691 }
692
693 error = user_path_walk(path, &nd);
694 if (error)
695 goto out;
696
697 error = vfs_statfs(nd.dentry, &kbuf);
698 if (error)
699 goto dput_and_out;
700
701 error = __put_user(kbuf.f_type, &buf->f_type);
702 error |= __put_user(kbuf.f_bsize, &buf->f_bsize);
703 error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
704 error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
705 error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
706 error |= __put_user(kbuf.f_files, &buf->f_files);
707 error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
708 for (i = 0; i < 6; i++) {
709 error |= __put_user(0, &buf->f_fname[i]);
710 error |= __put_user(0, &buf->f_fpack[i]);
711 }
712
713 dput_and_out:
714 path_release(&nd);
715 out:
716 return error;
717 }
718
719 asmlinkage int irix_fstatfs(unsigned int fd, struct irix_statfs __user *buf)
720 {
721 struct kstatfs kbuf;
722 struct file *file;
723 int error, i;
724
725 if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statfs))) {
726 error = -EFAULT;
727 goto out;
728 }
729
730 if (!(file = fget(fd))) {
731 error = -EBADF;
732 goto out;
733 }
734
735 error = vfs_statfs(file->f_path.dentry, &kbuf);
736 if (error)
737 goto out_f;
738
739 error = __put_user(kbuf.f_type, &buf->f_type);
740 error |= __put_user(kbuf.f_bsize, &buf->f_bsize);
741 error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
742 error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
743 error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
744 error |= __put_user(kbuf.f_files, &buf->f_files);
745 error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
746
747 for (i = 0; i < 6; i++) {
748 error |= __put_user(0, &buf->f_fname[i]);
749 error |= __put_user(0, &buf->f_fpack[i]);
750 }
751
752 out_f:
753 fput(file);
754 out:
755 return error;
756 }
757
758 asmlinkage int irix_setpgrp(int flags)
759 {
760 int error;
761
762 #ifdef DEBUG_PROCGRPS
763 printk("[%s:%d] setpgrp(%d) ", current->comm, current->pid, flags);
764 #endif
765 if(!flags)
766 error = process_group(current);
767 else
768 error = sys_setsid();
769 #ifdef DEBUG_PROCGRPS
770 printk("returning %d\n", process_group(current));
771 #endif
772
773 return error;
774 }
775
776 asmlinkage int irix_times(struct tms __user *tbuf)
777 {
778 int err = 0;
779
780 if (tbuf) {
781 if (!access_ok(VERIFY_WRITE,tbuf,sizeof *tbuf))
782 return -EFAULT;
783
784 err = __put_user(current->utime, &tbuf->tms_utime);
785 err |= __put_user(current->stime, &tbuf->tms_stime);
786 err |= __put_user(current->signal->cutime, &tbuf->tms_cutime);
787 err |= __put_user(current->signal->cstime, &tbuf->tms_cstime);
788 }
789
790 return err;
791 }
792
793 asmlinkage int irix_exec(struct pt_regs *regs)
794 {
795 int error, base = 0;
796 char *filename;
797
798 if(regs->regs[2] == 1000)
799 base = 1;
800 filename = getname((char __user *) (long)regs->regs[base + 4]);
801 error = PTR_ERR(filename);
802 if (IS_ERR(filename))
803 return error;
804
805 error = do_execve(filename, (char __user * __user *) (long)regs->regs[base + 5],
806 NULL, regs);
807 putname(filename);
808
809 return error;
810 }
811
812 asmlinkage int irix_exece(struct pt_regs *regs)
813 {
814 int error, base = 0;
815 char *filename;
816
817 if (regs->regs[2] == 1000)
818 base = 1;
819 filename = getname((char __user *) (long)regs->regs[base + 4]);
820 error = PTR_ERR(filename);
821 if (IS_ERR(filename))
822 return error;
823 error = do_execve(filename, (char __user * __user *) (long)regs->regs[base + 5],
824 (char __user * __user *) (long)regs->regs[base + 6], regs);
825 putname(filename);
826
827 return error;
828 }
829
830 asmlinkage unsigned long irix_gethostid(void)
831 {
832 printk("[%s:%d]: irix_gethostid() called...\n",
833 current->comm, current->pid);
834
835 return -EINVAL;
836 }
837
838 asmlinkage unsigned long irix_sethostid(unsigned long val)
839 {
840 printk("[%s:%d]: irix_sethostid(%08lx) called...\n",
841 current->comm, current->pid, val);
842
843 return -EINVAL;
844 }
845
846 asmlinkage int irix_socket(int family, int type, int protocol)
847 {
848 switch(type) {
849 case 1:
850 type = SOCK_DGRAM;
851 break;
852
853 case 2:
854 type = SOCK_STREAM;
855 break;
856
857 case 3:
858 type = 9; /* Invalid... */
859 break;
860
861 case 4:
862 type = SOCK_RAW;
863 break;
864
865 case 5:
866 type = SOCK_RDM;
867 break;
868
869 case 6:
870 type = SOCK_SEQPACKET;
871 break;
872
873 default:
874 break;
875 }
876
877 return sys_socket(family, type, protocol);
878 }
879
880 asmlinkage int irix_getdomainname(char __user *name, int len)
881 {
882 int err;
883
884 down_read(&uts_sem);
885 if (len > __NEW_UTS_LEN)
886 len = __NEW_UTS_LEN;
887 err = copy_to_user(name, utsname()->domainname, len) ? -EFAULT : 0;
888 up_read(&uts_sem);
889
890 return err;
891 }
892
893 asmlinkage unsigned long irix_getpagesize(void)
894 {
895 return PAGE_SIZE;
896 }
897
898 asmlinkage int irix_msgsys(int opcode, unsigned long arg0, unsigned long arg1,
899 unsigned long arg2, unsigned long arg3,
900 unsigned long arg4)
901 {
902 switch (opcode) {
903 case 0:
904 return sys_msgget((key_t) arg0, (int) arg1);
905 case 1:
906 return sys_msgctl((int) arg0, (int) arg1,
907 (struct msqid_ds __user *)arg2);
908 case 2:
909 return sys_msgrcv((int) arg0, (struct msgbuf __user *) arg1,
910 (size_t) arg2, (long) arg3, (int) arg4);
911 case 3:
912 return sys_msgsnd((int) arg0, (struct msgbuf __user *) arg1,
913 (size_t) arg2, (int) arg3);
914 default:
915 return -EINVAL;
916 }
917 }
918
919 asmlinkage int irix_shmsys(int opcode, unsigned long arg0, unsigned long arg1,
920 unsigned long arg2, unsigned long arg3)
921 {
922 switch (opcode) {
923 case 0:
924 return do_shmat((int) arg0, (char __user *) arg1, (int) arg2,
925 (unsigned long *) arg3);
926 case 1:
927 return sys_shmctl((int)arg0, (int)arg1,
928 (struct shmid_ds __user *)arg2);
929 case 2:
930 return sys_shmdt((char __user *)arg0);
931 case 3:
932 return sys_shmget((key_t) arg0, (int) arg1, (int) arg2);
933 default:
934 return -EINVAL;
935 }
936 }
937
938 asmlinkage int irix_semsys(int opcode, unsigned long arg0, unsigned long arg1,
939 unsigned long arg2, int arg3)
940 {
941 switch (opcode) {
942 case 0:
943 return sys_semctl((int) arg0, (int) arg1, (int) arg2,
944 (union semun) arg3);
945 case 1:
946 return sys_semget((key_t) arg0, (int) arg1, (int) arg2);
947 case 2:
948 return sys_semop((int) arg0, (struct sembuf __user *)arg1,
949 (unsigned int) arg2);
950 default:
951 return -EINVAL;
952 }
953 }
954
955 static inline loff_t llseek(struct file *file, loff_t offset, int origin)
956 {
957 loff_t (*fn)(struct file *, loff_t, int);
958 loff_t retval;
959
960 fn = default_llseek;
961 if (file->f_op && file->f_op->llseek)
962 fn = file->f_op->llseek;
963 lock_kernel();
964 retval = fn(file, offset, origin);
965 unlock_kernel();
966
967 return retval;
968 }
969
970 asmlinkage int irix_lseek64(int fd, int _unused, int offhi, int offlow,
971 int origin)
972 {
973 struct file * file;
974 loff_t offset;
975 int retval;
976
977 retval = -EBADF;
978 file = fget(fd);
979 if (!file)
980 goto bad;
981 retval = -EINVAL;
982 if (origin > 2)
983 goto out_putf;
984
985 offset = llseek(file, ((loff_t) offhi << 32) | offlow, origin);
986 retval = (int) offset;
987
988 out_putf:
989 fput(file);
990 bad:
991 return retval;
992 }
993
994 asmlinkage int irix_sginap(int ticks)
995 {
996 schedule_timeout_interruptible(ticks);
997 return 0;
998 }
999
1000 asmlinkage int irix_sgikopt(char __user *istring, char __user *ostring, int len)
1001 {
1002 return -EINVAL;
1003 }
1004
1005 asmlinkage int irix_gettimeofday(struct timeval __user *tv)
1006 {
1007 time_t sec;
1008 long nsec, seq;
1009 int err;
1010
1011 if (!access_ok(VERIFY_WRITE, tv, sizeof(struct timeval)))
1012 return -EFAULT;
1013
1014 do {
1015 seq = read_seqbegin(&xtime_lock);
1016 sec = xtime.tv_sec;
1017 nsec = xtime.tv_nsec;
1018 } while (read_seqretry(&xtime_lock, seq));
1019
1020 err = __put_user(sec, &tv->tv_sec);
1021 err |= __put_user((nsec / 1000), &tv->tv_usec);
1022
1023 return err;
1024 }
1025
1026 #define IRIX_MAP_AUTOGROW 0x40
1027
1028 asmlinkage unsigned long irix_mmap32(unsigned long addr, size_t len, int prot,
1029 int flags, int fd, off_t offset)
1030 {
1031 struct file *file = NULL;
1032 unsigned long retval;
1033
1034 if (!(flags & MAP_ANONYMOUS)) {
1035 if (!(file = fget(fd)))
1036 return -EBADF;
1037
1038 /* Ok, bad taste hack follows, try to think in something else
1039 * when reading this. */
1040 if (flags & IRIX_MAP_AUTOGROW) {
1041 unsigned long old_pos;
1042 long max_size = offset + len;
1043
1044 if (max_size > file->f_path.dentry->d_inode->i_size) {
1045 old_pos = sys_lseek (fd, max_size - 1, 0);
1046 sys_write (fd, (void __user *) "", 1);
1047 sys_lseek (fd, old_pos, 0);
1048 }
1049 }
1050 }
1051
1052 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
1053
1054 down_write(&current->mm->mmap_sem);
1055 retval = do_mmap(file, addr, len, prot, flags, offset);
1056 up_write(&current->mm->mmap_sem);
1057 if (file)
1058 fput(file);
1059
1060 return retval;
1061 }
1062
1063 asmlinkage int irix_madvise(unsigned long addr, int len, int behavior)
1064 {
1065 printk("[%s:%d] Wheee.. irix_madvise(%08lx,%d,%d)\n",
1066 current->comm, current->pid, addr, len, behavior);
1067
1068 return -EINVAL;
1069 }
1070
1071 asmlinkage int irix_pagelock(char __user *addr, int len, int op)
1072 {
1073 printk("[%s:%d] Wheee.. irix_pagelock(%p,%d,%d)\n",
1074 current->comm, current->pid, addr, len, op);
1075
1076 return -EINVAL;
1077 }
1078
1079 asmlinkage int irix_quotactl(struct pt_regs *regs)
1080 {
1081 printk("[%s:%d] Wheee.. irix_quotactl()\n",
1082 current->comm, current->pid);
1083
1084 return -EINVAL;
1085 }
1086
1087 asmlinkage int irix_BSDsetpgrp(int pid, int pgrp)
1088 {
1089 int error;
1090
1091 #ifdef DEBUG_PROCGRPS
1092 printk("[%s:%d] BSDsetpgrp(%d, %d) ", current->comm, current->pid,
1093 pid, pgrp);
1094 #endif
1095 if(!pid)
1096 pid = current->pid;
1097
1098 /* Wheee, weird sysv thing... */
1099 if ((pgrp == 0) && (pid == current->pid))
1100 error = sys_setsid();
1101 else
1102 error = sys_setpgid(pid, pgrp);
1103
1104 #ifdef DEBUG_PROCGRPS
1105 printk("error = %d\n", error);
1106 #endif
1107
1108 return error;
1109 }
1110
1111 asmlinkage int irix_systeminfo(int cmd, char __user *buf, int cnt)
1112 {
1113 printk("[%s:%d] Wheee.. irix_systeminfo(%d,%p,%d)\n",
1114 current->comm, current->pid, cmd, buf, cnt);
1115
1116 return -EINVAL;
1117 }
1118
1119 struct iuname {
1120 char sysname[257], nodename[257], release[257];
1121 char version[257], machine[257];
1122 char m_type[257], base_rel[257];
1123 char _unused0[257], _unused1[257], _unused2[257];
1124 char _unused3[257], _unused4[257], _unused5[257];
1125 };
1126
1127 asmlinkage int irix_uname(struct iuname __user *buf)
1128 {
1129 down_read(&uts_sem);
1130 if (copy_from_user(utsname()->sysname, buf->sysname, 65)
1131 || copy_from_user(utsname()->nodename, buf->nodename, 65)
1132 || copy_from_user(utsname()->release, buf->release, 65)
1133 || copy_from_user(utsname()->version, buf->version, 65)
1134 || copy_from_user(utsname()->machine, buf->machine, 65)) {
1135 return -EFAULT;
1136 }
1137 up_read(&uts_sem);
1138
1139 return 1;
1140 }
1141
1142 #undef DEBUG_XSTAT
1143
1144 static int irix_xstat32_xlate(struct kstat *stat, void __user *ubuf)
1145 {
1146 struct xstat32 {
1147 u32 st_dev, st_pad1[3], st_ino, st_mode, st_nlink, st_uid, st_gid;
1148 u32 st_rdev, st_pad2[2], st_size, st_pad3;
1149 u32 st_atime0, st_atime1;
1150 u32 st_mtime0, st_mtime1;
1151 u32 st_ctime0, st_ctime1;
1152 u32 st_blksize, st_blocks;
1153 char st_fstype[16];
1154 u32 st_pad4[8];
1155 } ub;
1156
1157 if (!sysv_valid_dev(stat->dev) || !sysv_valid_dev(stat->rdev))
1158 return -EOVERFLOW;
1159 ub.st_dev = sysv_encode_dev(stat->dev);
1160 ub.st_ino = stat->ino;
1161 ub.st_mode = stat->mode;
1162 ub.st_nlink = stat->nlink;
1163 SET_UID(ub.st_uid, stat->uid);
1164 SET_GID(ub.st_gid, stat->gid);
1165 ub.st_rdev = sysv_encode_dev(stat->rdev);
1166 #if BITS_PER_LONG == 32
1167 if (stat->size > MAX_NON_LFS)
1168 return -EOVERFLOW;
1169 #endif
1170 ub.st_size = stat->size;
1171 ub.st_atime0 = stat->atime.tv_sec;
1172 ub.st_atime1 = stat->atime.tv_nsec;
1173 ub.st_mtime0 = stat->mtime.tv_sec;
1174 ub.st_mtime1 = stat->atime.tv_nsec;
1175 ub.st_ctime0 = stat->ctime.tv_sec;
1176 ub.st_ctime1 = stat->atime.tv_nsec;
1177 ub.st_blksize = stat->blksize;
1178 ub.st_blocks = stat->blocks;
1179 strcpy (ub.st_fstype, "efs");
1180
1181 return copy_to_user(ubuf, &ub, sizeof(ub)) ? -EFAULT : 0;
1182 }
1183
1184 static int irix_xstat64_xlate(struct kstat *stat, void __user *ubuf)
1185 {
1186 struct xstat64 {
1187 u32 st_dev; s32 st_pad1[3];
1188 unsigned long long st_ino;
1189 u32 st_mode;
1190 u32 st_nlink; s32 st_uid; s32 st_gid; u32 st_rdev;
1191 s32 st_pad2[2];
1192 long long st_size;
1193 s32 st_pad3;
1194 struct { s32 tv_sec, tv_nsec; } st_atime, st_mtime, st_ctime;
1195 s32 st_blksize;
1196 long long st_blocks;
1197 char st_fstype[16];
1198 s32 st_pad4[8];
1199 } ks;
1200
1201 if (!sysv_valid_dev(stat->dev) || !sysv_valid_dev(stat->rdev))
1202 return -EOVERFLOW;
1203
1204 ks.st_dev = sysv_encode_dev(stat->dev);
1205 ks.st_pad1[0] = ks.st_pad1[1] = ks.st_pad1[2] = 0;
1206 ks.st_ino = (unsigned long long) stat->ino;
1207 ks.st_mode = (u32) stat->mode;
1208 ks.st_nlink = (u32) stat->nlink;
1209 ks.st_uid = (s32) stat->uid;
1210 ks.st_gid = (s32) stat->gid;
1211 ks.st_rdev = sysv_encode_dev (stat->rdev);
1212 ks.st_pad2[0] = ks.st_pad2[1] = 0;
1213 ks.st_size = (long long) stat->size;
1214 ks.st_pad3 = 0;
1215
1216 /* XXX hackety hack... */
1217 ks.st_atime.tv_sec = (s32) stat->atime.tv_sec;
1218 ks.st_atime.tv_nsec = stat->atime.tv_nsec;
1219 ks.st_mtime.tv_sec = (s32) stat->mtime.tv_sec;
1220 ks.st_mtime.tv_nsec = stat->mtime.tv_nsec;
1221 ks.st_ctime.tv_sec = (s32) stat->ctime.tv_sec;
1222 ks.st_ctime.tv_nsec = stat->ctime.tv_nsec;
1223
1224 ks.st_blksize = (s32) stat->blksize;
1225 ks.st_blocks = (long long) stat->blocks;
1226 memset(ks.st_fstype, 0, 16);
1227 ks.st_pad4[0] = ks.st_pad4[1] = ks.st_pad4[2] = ks.st_pad4[3] = 0;
1228 ks.st_pad4[4] = ks.st_pad4[5] = ks.st_pad4[6] = ks.st_pad4[7] = 0;
1229
1230 /* Now write it all back. */
1231 return copy_to_user(ubuf, &ks, sizeof(ks)) ? -EFAULT : 0;
1232 }
1233
1234 asmlinkage int irix_xstat(int version, char __user *filename, struct stat __user *statbuf)
1235 {
1236 int retval;
1237 struct kstat stat;
1238
1239 #ifdef DEBUG_XSTAT
1240 printk("[%s:%d] Wheee.. irix_xstat(%d,%s,%p) ",
1241 current->comm, current->pid, version, filename, statbuf);
1242 #endif
1243
1244 retval = vfs_stat(filename, &stat);
1245 if (!retval) {
1246 switch(version) {
1247 case 2:
1248 retval = irix_xstat32_xlate(&stat, statbuf);
1249 break;
1250 case 3:
1251 retval = irix_xstat64_xlate(&stat, statbuf);
1252 break;
1253 default:
1254 retval = -EINVAL;
1255 }
1256 }
1257 return retval;
1258 }
1259
1260 asmlinkage int irix_lxstat(int version, char __user *filename, struct stat __user *statbuf)
1261 {
1262 int error;
1263 struct kstat stat;
1264
1265 #ifdef DEBUG_XSTAT
1266 printk("[%s:%d] Wheee.. irix_lxstat(%d,%s,%p) ",
1267 current->comm, current->pid, version, filename, statbuf);
1268 #endif
1269
1270 error = vfs_lstat(filename, &stat);
1271
1272 if (!error) {
1273 switch (version) {
1274 case 2:
1275 error = irix_xstat32_xlate(&stat, statbuf);
1276 break;
1277 case 3:
1278 error = irix_xstat64_xlate(&stat, statbuf);
1279 break;
1280 default:
1281 error = -EINVAL;
1282 }
1283 }
1284 return error;
1285 }
1286
1287 asmlinkage int irix_fxstat(int version, int fd, struct stat __user *statbuf)
1288 {
1289 int error;
1290 struct kstat stat;
1291
1292 #ifdef DEBUG_XSTAT
1293 printk("[%s:%d] Wheee.. irix_fxstat(%d,%d,%p) ",
1294 current->comm, current->pid, version, fd, statbuf);
1295 #endif
1296
1297 error = vfs_fstat(fd, &stat);
1298 if (!error) {
1299 switch (version) {
1300 case 2:
1301 error = irix_xstat32_xlate(&stat, statbuf);
1302 break;
1303 case 3:
1304 error = irix_xstat64_xlate(&stat, statbuf);
1305 break;
1306 default:
1307 error = -EINVAL;
1308 }
1309 }
1310 return error;
1311 }
1312
1313 asmlinkage int irix_xmknod(int ver, char __user *filename, int mode, unsigned dev)
1314 {
1315 int retval;
1316 printk("[%s:%d] Wheee.. irix_xmknod(%d,%s,%x,%x)\n",
1317 current->comm, current->pid, ver, filename, mode, dev);
1318
1319 switch(ver) {
1320 case 2:
1321 /* shouldn't we convert here as well as on stat()? */
1322 retval = sys_mknod(filename, mode, dev);
1323 break;
1324
1325 default:
1326 retval = -EINVAL;
1327 break;
1328 };
1329
1330 return retval;
1331 }
1332
1333 asmlinkage int irix_swapctl(int cmd, char __user *arg)
1334 {
1335 printk("[%s:%d] Wheee.. irix_swapctl(%d,%p)\n",
1336 current->comm, current->pid, cmd, arg);
1337
1338 return -EINVAL;
1339 }
1340
1341 struct irix_statvfs {
1342 u32 f_bsize; u32 f_frsize; u32 f_blocks;
1343 u32 f_bfree; u32 f_bavail; u32 f_files; u32 f_ffree; u32 f_favail;
1344 u32 f_fsid; char f_basetype[16];
1345 u32 f_flag; u32 f_namemax;
1346 char f_fstr[32]; u32 f_filler[16];
1347 };
1348
1349 asmlinkage int irix_statvfs(char __user *fname, struct irix_statvfs __user *buf)
1350 {
1351 struct nameidata nd;
1352 struct kstatfs kbuf;
1353 int error, i;
1354
1355 printk("[%s:%d] Wheee.. irix_statvfs(%s,%p)\n",
1356 current->comm, current->pid, fname, buf);
1357 if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs)))
1358 return -EFAULT;
1359
1360 error = user_path_walk(fname, &nd);
1361 if (error)
1362 goto out;
1363 error = vfs_statfs(nd.dentry, &kbuf);
1364 if (error)
1365 goto dput_and_out;
1366
1367 error |= __put_user(kbuf.f_bsize, &buf->f_bsize);
1368 error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
1369 error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
1370 error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
1371 error |= __put_user(kbuf.f_bfree, &buf->f_bavail); /* XXX hackety hack... */
1372 error |= __put_user(kbuf.f_files, &buf->f_files);
1373 error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
1374 error |= __put_user(kbuf.f_ffree, &buf->f_favail); /* XXX hackety hack... */
1375 #ifdef __MIPSEB__
1376 error |= __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
1377 #else
1378 error |= __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
1379 #endif
1380 for (i = 0; i < 16; i++)
1381 error |= __put_user(0, &buf->f_basetype[i]);
1382 error |= __put_user(0, &buf->f_flag);
1383 error |= __put_user(kbuf.f_namelen, &buf->f_namemax);
1384 for (i = 0; i < 32; i++)
1385 error |= __put_user(0, &buf->f_fstr[i]);
1386
1387 dput_and_out:
1388 path_release(&nd);
1389 out:
1390 return error;
1391 }
1392
1393 asmlinkage int irix_fstatvfs(int fd, struct irix_statvfs __user *buf)
1394 {
1395 struct kstatfs kbuf;
1396 struct file *file;
1397 int error, i;
1398
1399 printk("[%s:%d] Wheee.. irix_fstatvfs(%d,%p)\n",
1400 current->comm, current->pid, fd, buf);
1401
1402 if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs)))
1403 return -EFAULT;
1404
1405 if (!(file = fget(fd))) {
1406 error = -EBADF;
1407 goto out;
1408 }
1409 error = vfs_statfs(file->f_path.dentry, &kbuf);
1410 if (error)
1411 goto out_f;
1412
1413 error = __put_user(kbuf.f_bsize, &buf->f_bsize);
1414 error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
1415 error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
1416 error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
1417 error |= __put_user(kbuf.f_bfree, &buf->f_bavail); /* XXX hackety hack... */
1418 error |= __put_user(kbuf.f_files, &buf->f_files);
1419 error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
1420 error |= __put_user(kbuf.f_ffree, &buf->f_favail); /* XXX hackety hack... */
1421 #ifdef __MIPSEB__
1422 error |= __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
1423 #else
1424 error |= __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
1425 #endif
1426 for(i = 0; i < 16; i++)
1427 error |= __put_user(0, &buf->f_basetype[i]);
1428 error |= __put_user(0, &buf->f_flag);
1429 error |= __put_user(kbuf.f_namelen, &buf->f_namemax);
1430 error |= __clear_user(&buf->f_fstr, sizeof(buf->f_fstr)) ? -EFAULT : 0;
1431
1432 out_f:
1433 fput(file);
1434 out:
1435 return error;
1436 }
1437
1438 asmlinkage int irix_priocntl(struct pt_regs *regs)
1439 {
1440 printk("[%s:%d] Wheee.. irix_priocntl()\n",
1441 current->comm, current->pid);
1442
1443 return -EINVAL;
1444 }
1445
1446 asmlinkage int irix_sigqueue(int pid, int sig, int code, int val)
1447 {
1448 printk("[%s:%d] Wheee.. irix_sigqueue(%d,%d,%d,%d)\n",
1449 current->comm, current->pid, pid, sig, code, val);
1450
1451 return -EINVAL;
1452 }
1453
1454 asmlinkage int irix_truncate64(char __user *name, int pad, int size1, int size2)
1455 {
1456 int retval;
1457
1458 if (size1) {
1459 retval = -EINVAL;
1460 goto out;
1461 }
1462 retval = sys_truncate(name, size2);
1463
1464 out:
1465 return retval;
1466 }
1467
1468 asmlinkage int irix_ftruncate64(int fd, int pad, int size1, int size2)
1469 {
1470 int retval;
1471
1472 if (size1) {
1473 retval = -EINVAL;
1474 goto out;
1475 }
1476 retval = sys_ftruncate(fd, size2);
1477
1478 out:
1479 return retval;
1480 }
1481
1482 asmlinkage int irix_mmap64(struct pt_regs *regs)
1483 {
1484 int len, prot, flags, fd, off1, off2, error, base = 0;
1485 unsigned long addr, pgoff, *sp;
1486 struct file *file = NULL;
1487 int err;
1488
1489 if (regs->regs[2] == 1000)
1490 base = 1;
1491 sp = (unsigned long *) (regs->regs[29] + 16);
1492 addr = regs->regs[base + 4];
1493 len = regs->regs[base + 5];
1494 prot = regs->regs[base + 6];
1495 if (!base) {
1496 flags = regs->regs[base + 7];
1497 if (!access_ok(VERIFY_READ, sp, (4 * sizeof(unsigned long))))
1498 return -EFAULT;
1499 fd = sp[0];
1500 err = __get_user(off1, &sp[1]);
1501 err |= __get_user(off2, &sp[2]);
1502 } else {
1503 if (!access_ok(VERIFY_READ, sp, (5 * sizeof(unsigned long))))
1504 return -EFAULT;
1505 err = __get_user(flags, &sp[0]);
1506 err |= __get_user(fd, &sp[1]);
1507 err |= __get_user(off1, &sp[2]);
1508 err |= __get_user(off2, &sp[3]);
1509 }
1510
1511 if (err)
1512 return err;
1513
1514 if (off1 & PAGE_MASK)
1515 return -EOVERFLOW;
1516
1517 pgoff = (off1 << (32 - PAGE_SHIFT)) | (off2 >> PAGE_SHIFT);
1518
1519 if (!(flags & MAP_ANONYMOUS)) {
1520 if (!(file = fget(fd)))
1521 return -EBADF;
1522
1523 /* Ok, bad taste hack follows, try to think in something else
1524 when reading this */
1525 if (flags & IRIX_MAP_AUTOGROW) {
1526 unsigned long old_pos;
1527 long max_size = off2 + len;
1528
1529 if (max_size > file->f_path.dentry->d_inode->i_size) {
1530 old_pos = sys_lseek (fd, max_size - 1, 0);
1531 sys_write (fd, (void __user *) "", 1);
1532 sys_lseek (fd, old_pos, 0);
1533 }
1534 }
1535 }
1536
1537 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
1538
1539 down_write(&current->mm->mmap_sem);
1540 error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
1541 up_write(&current->mm->mmap_sem);
1542
1543 if (file)
1544 fput(file);
1545
1546 return error;
1547 }
1548
1549 asmlinkage int irix_dmi(struct pt_regs *regs)
1550 {
1551 printk("[%s:%d] Wheee.. irix_dmi()\n",
1552 current->comm, current->pid);
1553
1554 return -EINVAL;
1555 }
1556
1557 asmlinkage int irix_pread(int fd, char __user *buf, int cnt, int off64,
1558 int off1, int off2)
1559 {
1560 printk("[%s:%d] Wheee.. irix_pread(%d,%p,%d,%d,%d,%d)\n",
1561 current->comm, current->pid, fd, buf, cnt, off64, off1, off2);
1562
1563 return -EINVAL;
1564 }
1565
1566 asmlinkage int irix_pwrite(int fd, char __user *buf, int cnt, int off64,
1567 int off1, int off2)
1568 {
1569 printk("[%s:%d] Wheee.. irix_pwrite(%d,%p,%d,%d,%d,%d)\n",
1570 current->comm, current->pid, fd, buf, cnt, off64, off1, off2);
1571
1572 return -EINVAL;
1573 }
1574
1575 asmlinkage int irix_sgifastpath(int cmd, unsigned long arg0, unsigned long arg1,
1576 unsigned long arg2, unsigned long arg3,
1577 unsigned long arg4, unsigned long arg5)
1578 {
1579 printk("[%s:%d] Wheee.. irix_fastpath(%d,%08lx,%08lx,%08lx,%08lx,"
1580 "%08lx,%08lx)\n",
1581 current->comm, current->pid, cmd, arg0, arg1, arg2,
1582 arg3, arg4, arg5);
1583
1584 return -EINVAL;
1585 }
1586
1587 struct irix_statvfs64 {
1588 u32 f_bsize; u32 f_frsize;
1589 u64 f_blocks; u64 f_bfree; u64 f_bavail;
1590 u64 f_files; u64 f_ffree; u64 f_favail;
1591 u32 f_fsid;
1592 char f_basetype[16];
1593 u32 f_flag; u32 f_namemax;
1594 char f_fstr[32];
1595 u32 f_filler[16];
1596 };
1597
1598 asmlinkage int irix_statvfs64(char __user *fname, struct irix_statvfs64 __user *buf)
1599 {
1600 struct nameidata nd;
1601 struct kstatfs kbuf;
1602 int error, i;
1603
1604 printk("[%s:%d] Wheee.. irix_statvfs64(%s,%p)\n",
1605 current->comm, current->pid, fname, buf);
1606 if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs64))) {
1607 error = -EFAULT;
1608 goto out;
1609 }
1610
1611 error = user_path_walk(fname, &nd);
1612 if (error)
1613 goto out;
1614 error = vfs_statfs(nd.dentry, &kbuf);
1615 if (error)
1616 goto dput_and_out;
1617
1618 error = __put_user(kbuf.f_bsize, &buf->f_bsize);
1619 error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
1620 error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
1621 error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
1622 error |= __put_user(kbuf.f_bfree, &buf->f_bavail); /* XXX hackety hack... */
1623 error |= __put_user(kbuf.f_files, &buf->f_files);
1624 error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
1625 error |= __put_user(kbuf.f_ffree, &buf->f_favail); /* XXX hackety hack... */
1626 #ifdef __MIPSEB__
1627 error |= __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
1628 #else
1629 error |= __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
1630 #endif
1631 for(i = 0; i < 16; i++)
1632 error |= __put_user(0, &buf->f_basetype[i]);
1633 error |= __put_user(0, &buf->f_flag);
1634 error |= __put_user(kbuf.f_namelen, &buf->f_namemax);
1635 for(i = 0; i < 32; i++)
1636 error |= __put_user(0, &buf->f_fstr[i]);
1637
1638 dput_and_out:
1639 path_release(&nd);
1640 out:
1641 return error;
1642 }
1643
1644 asmlinkage int irix_fstatvfs64(int fd, struct irix_statvfs __user *buf)
1645 {
1646 struct kstatfs kbuf;
1647 struct file *file;
1648 int error, i;
1649
1650 printk("[%s:%d] Wheee.. irix_fstatvfs64(%d,%p)\n",
1651 current->comm, current->pid, fd, buf);
1652
1653 if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs))) {
1654 error = -EFAULT;
1655 goto out;
1656 }
1657 if (!(file = fget(fd))) {
1658 error = -EBADF;
1659 goto out;
1660 }
1661 error = vfs_statfs(file->f_path.dentry, &kbuf);
1662 if (error)
1663 goto out_f;
1664
1665 error = __put_user(kbuf.f_bsize, &buf->f_bsize);
1666 error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
1667 error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
1668 error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
1669 error |= __put_user(kbuf.f_bfree, &buf->f_bavail); /* XXX hackety hack... */
1670 error |= __put_user(kbuf.f_files, &buf->f_files);
1671 error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
1672 error |= __put_user(kbuf.f_ffree, &buf->f_favail); /* XXX hackety hack... */
1673 #ifdef __MIPSEB__
1674 error |= __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
1675 #else
1676 error |= __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
1677 #endif
1678 for(i = 0; i < 16; i++)
1679 error |= __put_user(0, &buf->f_basetype[i]);
1680 error |= __put_user(0, &buf->f_flag);
1681 error |= __put_user(kbuf.f_namelen, &buf->f_namemax);
1682 error |= __clear_user(buf->f_fstr, sizeof(buf->f_fstr[i])) ? -EFAULT : 0;
1683
1684 out_f:
1685 fput(file);
1686 out:
1687 return error;
1688 }
1689
1690 asmlinkage int irix_getmountid(char __user *fname, unsigned long __user *midbuf)
1691 {
1692 int err;
1693
1694 printk("[%s:%d] irix_getmountid(%s, %p)\n",
1695 current->comm, current->pid, fname, midbuf);
1696 if (!access_ok(VERIFY_WRITE, midbuf, (sizeof(unsigned long) * 4)))
1697 return -EFAULT;
1698
1699 /*
1700 * The idea with this system call is that when trying to determine
1701 * 'pwd' and it's a toss-up for some reason, userland can use the
1702 * fsid of the filesystem to try and make the right decision, but
1703 * we don't have this so for now. XXX
1704 */
1705 err = __put_user(0, &midbuf[0]);
1706 err |= __put_user(0, &midbuf[1]);
1707 err |= __put_user(0, &midbuf[2]);
1708 err |= __put_user(0, &midbuf[3]);
1709
1710 return err;
1711 }
1712
1713 asmlinkage int irix_nsproc(unsigned long entry, unsigned long mask,
1714 unsigned long arg, unsigned long sp, int slen)
1715 {
1716 printk("[%s:%d] Wheee.. irix_nsproc(%08lx,%08lx,%08lx,%08lx,%d)\n",
1717 current->comm, current->pid, entry, mask, arg, sp, slen);
1718
1719 return -EINVAL;
1720 }
1721
1722 #undef DEBUG_GETDENTS
1723
1724 struct irix_dirent32 {
1725 u32 d_ino;
1726 u32 d_off;
1727 unsigned short d_reclen;
1728 char d_name[1];
1729 };
1730
1731 struct irix_dirent32_callback {
1732 struct irix_dirent32 __user *current_dir;
1733 struct irix_dirent32 __user *previous;
1734 int count;
1735 int error;
1736 };
1737
1738 #define NAME_OFFSET32(de) ((int) ((de)->d_name - (char *) (de)))
1739 #define ROUND_UP32(x) (((x)+sizeof(u32)-1) & ~(sizeof(u32)-1))
1740
1741 static int irix_filldir32(void *__buf, const char *name,
1742 int namlen, loff_t offset, u64 ino, unsigned int d_type)
1743 {
1744 struct irix_dirent32 __user *dirent;
1745 struct irix_dirent32_callback *buf = __buf;
1746 unsigned short reclen = ROUND_UP32(NAME_OFFSET32(dirent) + namlen + 1);
1747 int err = 0;
1748 u32 d_ino;
1749
1750 #ifdef DEBUG_GETDENTS
1751 printk("\nirix_filldir32[reclen<%d>namlen<%d>count<%d>]",
1752 reclen, namlen, buf->count);
1753 #endif
1754 buf->error = -EINVAL; /* only used if we fail.. */
1755 if (reclen > buf->count)
1756 return -EINVAL;
1757 d_ino = ino;
1758 if (sizeof(d_ino) < sizeof(ino) && d_ino != ino)
1759 return -EOVERFLOW;
1760 dirent = buf->previous;
1761 if (dirent)
1762 err = __put_user(offset, &dirent->d_off);
1763 dirent = buf->current_dir;
1764 err |= __put_user(dirent, &buf->previous);
1765 err |= __put_user(d_ino, &dirent->d_ino);
1766 err |= __put_user(reclen, &dirent->d_reclen);
1767 err |= copy_to_user((char __user *)dirent->d_name, name, namlen) ? -EFAULT : 0;
1768 err |= __put_user(0, &dirent->d_name[namlen]);
1769 dirent = (struct irix_dirent32 __user *) ((char __user *) dirent + reclen);
1770
1771 buf->current_dir = dirent;
1772 buf->count -= reclen;
1773
1774 return err;
1775 }
1776
1777 asmlinkage int irix_ngetdents(unsigned int fd, void __user * dirent,
1778 unsigned int count, int __user *eob)
1779 {
1780 struct file *file;
1781 struct irix_dirent32 __user *lastdirent;
1782 struct irix_dirent32_callback buf;
1783 int error;
1784
1785 #ifdef DEBUG_GETDENTS
1786 printk("[%s:%d] ngetdents(%d, %p, %d, %p) ", current->comm,
1787 current->pid, fd, dirent, count, eob);
1788 #endif
1789 error = -EBADF;
1790 file = fget(fd);
1791 if (!file)
1792 goto out;
1793
1794 buf.current_dir = (struct irix_dirent32 __user *) dirent;
1795 buf.previous = NULL;
1796 buf.count = count;
1797 buf.error = 0;
1798
1799 error = vfs_readdir(file, irix_filldir32, &buf);
1800 if (error < 0)
1801 goto out_putf;
1802
1803 error = buf.error;
1804 lastdirent = buf.previous;
1805 if (lastdirent) {
1806 put_user(file->f_pos, &lastdirent->d_off);
1807 error = count - buf.count;
1808 }
1809
1810 if (put_user(0, eob) < 0) {
1811 error = -EFAULT;
1812 goto out_putf;
1813 }
1814
1815 #ifdef DEBUG_GETDENTS
1816 printk("eob=%d returning %d\n", *eob, count - buf.count);
1817 #endif
1818 error = count - buf.count;
1819
1820 out_putf:
1821 fput(file);
1822 out:
1823 return error;
1824 }
1825
1826 struct irix_dirent64 {
1827 u64 d_ino;
1828 u64 d_off;
1829 unsigned short d_reclen;
1830 char d_name[1];
1831 };
1832
1833 struct irix_dirent64_callback {
1834 struct irix_dirent64 __user *curr;
1835 struct irix_dirent64 __user *previous;
1836 int count;
1837 int error;
1838 };
1839
1840 #define NAME_OFFSET64(de) ((int) ((de)->d_name - (char *) (de)))
1841 #define ROUND_UP64(x) (((x)+sizeof(u64)-1) & ~(sizeof(u64)-1))
1842
1843 static int irix_filldir64(void *__buf, const char *name,
1844 int namlen, loff_t offset, u64 ino, unsigned int d_type)
1845 {
1846 struct irix_dirent64 __user *dirent;
1847 struct irix_dirent64_callback * buf = __buf;
1848 unsigned short reclen = ROUND_UP64(NAME_OFFSET64(dirent) + namlen + 1);
1849 int err = 0;
1850
1851 if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf)))
1852 return -EFAULT;
1853
1854 if (__put_user(-EINVAL, &buf->error)) /* only used if we fail.. */
1855 return -EFAULT;
1856 if (reclen > buf->count)
1857 return -EINVAL;
1858 dirent = buf->previous;
1859 if (dirent)
1860 err = __put_user(offset, &dirent->d_off);
1861 dirent = buf->curr;
1862 buf->previous = dirent;
1863 err |= __put_user(ino, &dirent->d_ino);
1864 err |= __put_user(reclen, &dirent->d_reclen);
1865 err |= __copy_to_user((char __user *)dirent->d_name, name, namlen)
1866 ? -EFAULT : 0;
1867 err |= __put_user(0, &dirent->d_name[namlen]);
1868
1869 dirent = (struct irix_dirent64 __user *) ((char __user *) dirent + reclen);
1870
1871 buf->curr = dirent;
1872 buf->count -= reclen;
1873
1874 return err;
1875 }
1876
1877 asmlinkage int irix_getdents64(int fd, void __user *dirent, int cnt)
1878 {
1879 struct file *file;
1880 struct irix_dirent64 __user *lastdirent;
1881 struct irix_dirent64_callback buf;
1882 int error;
1883
1884 #ifdef DEBUG_GETDENTS
1885 printk("[%s:%d] getdents64(%d, %p, %d) ", current->comm,
1886 current->pid, fd, dirent, cnt);
1887 #endif
1888 error = -EBADF;
1889 if (!(file = fget(fd)))
1890 goto out;
1891
1892 error = -EFAULT;
1893 if (!access_ok(VERIFY_WRITE, dirent, cnt))
1894 goto out_f;
1895
1896 error = -EINVAL;
1897 if (cnt < (sizeof(struct irix_dirent64) + 255))
1898 goto out_f;
1899
1900 buf.curr = (struct irix_dirent64 __user *) dirent;
1901 buf.previous = NULL;
1902 buf.count = cnt;
1903 buf.error = 0;
1904 error = vfs_readdir(file, irix_filldir64, &buf);
1905 if (error < 0)
1906 goto out_f;
1907 lastdirent = buf.previous;
1908 if (!lastdirent) {
1909 error = buf.error;
1910 goto out_f;
1911 }
1912 if (put_user(file->f_pos, &lastdirent->d_off))
1913 return -EFAULT;
1914 #ifdef DEBUG_GETDENTS
1915 printk("returning %d\n", cnt - buf.count);
1916 #endif
1917 error = cnt - buf.count;
1918
1919 out_f:
1920 fput(file);
1921 out:
1922 return error;
1923 }
1924
1925 asmlinkage int irix_ngetdents64(int fd, void __user *dirent, int cnt, int *eob)
1926 {
1927 struct file *file;
1928 struct irix_dirent64 __user *lastdirent;
1929 struct irix_dirent64_callback buf;
1930 int error;
1931
1932 #ifdef DEBUG_GETDENTS
1933 printk("[%s:%d] ngetdents64(%d, %p, %d) ", current->comm,
1934 current->pid, fd, dirent, cnt);
1935 #endif
1936 error = -EBADF;
1937 if (!(file = fget(fd)))
1938 goto out;
1939
1940 error = -EFAULT;
1941 if (!access_ok(VERIFY_WRITE, dirent, cnt) ||
1942 !access_ok(VERIFY_WRITE, eob, sizeof(*eob)))
1943 goto out_f;
1944
1945 error = -EINVAL;
1946 if (cnt < (sizeof(struct irix_dirent64) + 255))
1947 goto out_f;
1948
1949 *eob = 0;
1950 buf.curr = (struct irix_dirent64 __user *) dirent;
1951 buf.previous = NULL;
1952 buf.count = cnt;
1953 buf.error = 0;
1954 error = vfs_readdir(file, irix_filldir64, &buf);
1955 if (error < 0)
1956 goto out_f;
1957 lastdirent = buf.previous;
1958 if (!lastdirent) {
1959 error = buf.error;
1960 goto out_f;
1961 }
1962 if (put_user(file->f_pos, &lastdirent->d_off))
1963 return -EFAULT;
1964 #ifdef DEBUG_GETDENTS
1965 printk("eob=%d returning %d\n", *eob, cnt - buf.count);
1966 #endif
1967 error = cnt - buf.count;
1968
1969 out_f:
1970 fput(file);
1971 out:
1972 return error;
1973 }
1974
1975 asmlinkage int irix_uadmin(unsigned long op, unsigned long func, unsigned long arg)
1976 {
1977 int retval;
1978
1979 switch (op) {
1980 case 1:
1981 /* Reboot */
1982 printk("[%s:%d] irix_uadmin: Wants to reboot...\n",
1983 current->comm, current->pid);
1984 retval = -EINVAL;
1985 goto out;
1986
1987 case 2:
1988 /* Shutdown */
1989 printk("[%s:%d] irix_uadmin: Wants to shutdown...\n",
1990 current->comm, current->pid);
1991 retval = -EINVAL;
1992 goto out;
1993
1994 case 4:
1995 /* Remount-root */
1996 printk("[%s:%d] irix_uadmin: Wants to remount root...\n",
1997 current->comm, current->pid);
1998 retval = -EINVAL;
1999 goto out;
2000
2001 case 8:
2002 /* Kill all tasks. */
2003 printk("[%s:%d] irix_uadmin: Wants to kill all tasks...\n",
2004 current->comm, current->pid);
2005 retval = -EINVAL;
2006 goto out;
2007
2008 case 256:
2009 /* Set magic mushrooms... */
2010 printk("[%s:%d] irix_uadmin: Wants to set magic mushroom[%d]...\n",
2011 current->comm, current->pid, (int) func);
2012 retval = -EINVAL;
2013 goto out;
2014
2015 default:
2016 printk("[%s:%d] irix_uadmin: Unknown operation [%d]...\n",
2017 current->comm, current->pid, (int) op);
2018 retval = -EINVAL;
2019 goto out;
2020 };
2021
2022 out:
2023 return retval;
2024 }
2025
2026 asmlinkage int irix_utssys(char __user *inbuf, int arg, int type, char __user *outbuf)
2027 {
2028 int retval;
2029
2030 switch(type) {
2031 case 0:
2032 /* uname() */
2033 retval = irix_uname((struct iuname __user *)inbuf);
2034 goto out;
2035
2036 case 2:
2037 /* ustat() */
2038 printk("[%s:%d] irix_utssys: Wants to do ustat()\n",
2039 current->comm, current->pid);
2040 retval = -EINVAL;
2041 goto out;
2042
2043 case 3:
2044 /* fusers() */
2045 printk("[%s:%d] irix_utssys: Wants to do fusers()\n",
2046 current->comm, current->pid);
2047 retval = -EINVAL;
2048 goto out;
2049
2050 default:
2051 printk("[%s:%d] irix_utssys: Wants to do unknown type[%d]\n",
2052 current->comm, current->pid, (int) type);
2053 retval = -EINVAL;
2054 goto out;
2055 }
2056
2057 out:
2058 return retval;
2059 }
2060
2061 #undef DEBUG_FCNTL
2062
2063 #define IRIX_F_ALLOCSP 10
2064
2065 asmlinkage int irix_fcntl(int fd, int cmd, int arg)
2066 {
2067 int retval;
2068
2069 #ifdef DEBUG_FCNTL
2070 printk("[%s:%d] irix_fcntl(%d, %d, %d) ", current->comm,
2071 current->pid, fd, cmd, arg);
2072 #endif
2073 if (cmd == IRIX_F_ALLOCSP){
2074 return 0;
2075 }
2076 retval = sys_fcntl(fd, cmd, arg);
2077 #ifdef DEBUG_FCNTL
2078 printk("%d\n", retval);
2079 #endif
2080 return retval;
2081 }
2082
2083 asmlinkage int irix_ulimit(int cmd, int arg)
2084 {
2085 int retval;
2086
2087 switch(cmd) {
2088 case 1:
2089 printk("[%s:%d] irix_ulimit: Wants to get file size limit.\n",
2090 current->comm, current->pid);
2091 retval = -EINVAL;
2092 goto out;
2093
2094 case 2:
2095 printk("[%s:%d] irix_ulimit: Wants to set file size limit.\n",
2096 current->comm, current->pid);
2097 retval = -EINVAL;
2098 goto out;
2099
2100 case 3:
2101 printk("[%s:%d] irix_ulimit: Wants to get brk limit.\n",
2102 current->comm, current->pid);
2103 retval = -EINVAL;
2104 goto out;
2105
2106 case 4:
2107 #if 0
2108 printk("[%s:%d] irix_ulimit: Wants to get fd limit.\n",
2109 current->comm, current->pid);
2110 retval = -EINVAL;
2111 goto out;
2112 #endif
2113 retval = current->signal->rlim[RLIMIT_NOFILE].rlim_cur;
2114 goto out;
2115
2116 case 5:
2117 printk("[%s:%d] irix_ulimit: Wants to get txt offset.\n",
2118 current->comm, current->pid);
2119 retval = -EINVAL;
2120 goto out;
2121
2122 default:
2123 printk("[%s:%d] irix_ulimit: Unknown command [%d].\n",
2124 current->comm, current->pid, cmd);
2125 retval = -EINVAL;
2126 goto out;
2127 }
2128 out:
2129 return retval;
2130 }
2131
2132 asmlinkage int irix_unimp(struct pt_regs *regs)
2133 {
2134 printk("irix_unimp [%s:%d] v0=%d v1=%d a0=%08lx a1=%08lx a2=%08lx "
2135 "a3=%08lx\n", current->comm, current->pid,
2136 (int) regs->regs[2], (int) regs->regs[3],
2137 regs->regs[4], regs->regs[5], regs->regs[6], regs->regs[7]);
2138
2139 return -ENOSYS;
2140 }
Linux kernel - Deliverables
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