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Merge branch 'drm-forlinus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
[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
35 #include <asm/ptrace.h>
36 #include <asm/page.h>
37 #include <asm/uaccess.h>
38 #include <asm/inventory.h>
39
40 /* 2,191 lines of complete and utter shit coming up... */
41
42 extern int max_threads;
43
44 /* The sysmp commands supported thus far. */
45 #define MP_NPROCS 1 /* # processor in complex */
46 #define MP_NAPROCS 2 /* # active processors in complex */
47 #define MP_PGSIZE 14 /* Return system page size in v1. */
48
49 asmlinkage int irix_sysmp(struct pt_regs *regs)
50 {
51 unsigned long cmd;
52 int base = 0;
53 int error = 0;
54
55 if(regs->regs[2] == 1000)
56 base = 1;
57 cmd = regs->regs[base + 4];
58 switch(cmd) {
59 case MP_PGSIZE:
60 error = PAGE_SIZE;
61 break;
62 case MP_NPROCS:
63 case MP_NAPROCS:
64 error = num_online_cpus();
65 break;
66 default:
67 printk("SYSMP[%s:%d]: Unsupported opcode %d\n",
68 current->comm, current->pid, (int)cmd);
69 error = -EINVAL;
70 break;
71 }
72
73 return error;
74 }
75
76 /* The prctl commands. */
77 #define PR_MAXPROCS 1 /* Tasks/user. */
78 #define PR_ISBLOCKED 2 /* If blocked, return 1. */
79 #define PR_SETSTACKSIZE 3 /* Set largest task stack size. */
80 #define PR_GETSTACKSIZE 4 /* Get largest task stack size. */
81 #define PR_MAXPPROCS 5 /* Num parallel tasks. */
82 #define PR_UNBLKONEXEC 6 /* When task exec/exit's, unblock. */
83 #define PR_SETEXITSIG 8 /* When task exit's, set signal. */
84 #define PR_RESIDENT 9 /* Make task unswappable. */
85 #define PR_ATTACHADDR 10 /* (Re-)Connect a vma to a task. */
86 #define PR_DETACHADDR 11 /* Disconnect a vma from a task. */
87 #define PR_TERMCHILD 12 /* Kill child if the parent dies. */
88 #define PR_GETSHMASK 13 /* Get the sproc() share mask. */
89 #define PR_GETNSHARE 14 /* Number of share group members. */
90 #define PR_COREPID 15 /* Add task pid to name when it core. */
91 #define PR_ATTACHADDRPERM 16 /* (Re-)Connect vma, with specified prot. */
92 #define PR_PTHREADEXIT 17 /* Kill a pthread, only for IRIX 6.[234] */
93
94 asmlinkage int irix_prctl(unsigned option, ...)
95 {
96 va_list args;
97 int error = 0;
98
99 va_start(args, option);
100 switch (option) {
101 case PR_MAXPROCS:
102 printk("irix_prctl[%s:%d]: Wants PR_MAXPROCS\n",
103 current->comm, current->pid);
104 error = max_threads;
105 break;
106
107 case PR_ISBLOCKED: {
108 struct task_struct *task;
109
110 printk("irix_prctl[%s:%d]: Wants PR_ISBLOCKED\n",
111 current->comm, current->pid);
112 read_lock(&tasklist_lock);
113 task = find_task_by_pid(va_arg(args, pid_t));
114 error = -ESRCH;
115 if (error)
116 error = (task->run_list.next != NULL);
117 read_unlock(&tasklist_lock);
118 /* Can _your_ OS find this out that fast? */
119 break;
120 }
121
122 case PR_SETSTACKSIZE: {
123 long value = va_arg(args, long);
124
125 printk("irix_prctl[%s:%d]: Wants PR_SETSTACKSIZE<%08lx>\n",
126 current->comm, current->pid, (unsigned long) value);
127 if (value > RLIM_INFINITY)
128 value = RLIM_INFINITY;
129 if (capable(CAP_SYS_ADMIN)) {
130 task_lock(current->group_leader);
131 current->signal->rlim[RLIMIT_STACK].rlim_max =
132 current->signal->rlim[RLIMIT_STACK].rlim_cur = value;
133 task_unlock(current->group_leader);
134 error = value;
135 break;
136 }
137 task_lock(current->group_leader);
138 if (value > current->signal->rlim[RLIMIT_STACK].rlim_max) {
139 error = -EINVAL;
140 task_unlock(current->group_leader);
141 break;
142 }
143 current->signal->rlim[RLIMIT_STACK].rlim_cur = value;
144 task_unlock(current->group_leader);
145 error = value;
146 break;
147 }
148
149 case PR_GETSTACKSIZE:
150 printk("irix_prctl[%s:%d]: Wants PR_GETSTACKSIZE\n",
151 current->comm, current->pid);
152 error = current->signal->rlim[RLIMIT_STACK].rlim_cur;
153 break;
154
155 case PR_MAXPPROCS:
156 printk("irix_prctl[%s:%d]: Wants PR_MAXPROCS\n",
157 current->comm, current->pid);
158 error = 1;
159 break;
160
161 case PR_UNBLKONEXEC:
162 printk("irix_prctl[%s:%d]: Wants PR_UNBLKONEXEC\n",
163 current->comm, current->pid);
164 error = -EINVAL;
165 break;
166
167 case PR_SETEXITSIG:
168 printk("irix_prctl[%s:%d]: Wants PR_SETEXITSIG\n",
169 current->comm, current->pid);
170
171 /* We can probably play some game where we set the task
172 * exit_code to some non-zero value when this is requested,
173 * and check whether exit_code is already set in do_exit().
174 */
175 error = -EINVAL;
176 break;
177
178 case PR_RESIDENT:
179 printk("irix_prctl[%s:%d]: Wants PR_RESIDENT\n",
180 current->comm, current->pid);
181 error = 0; /* Compatibility indeed. */
182 break;
183
184 case PR_ATTACHADDR:
185 printk("irix_prctl[%s:%d]: Wants PR_ATTACHADDR\n",
186 current->comm, current->pid);
187 error = -EINVAL;
188 break;
189
190 case PR_DETACHADDR:
191 printk("irix_prctl[%s:%d]: Wants PR_DETACHADDR\n",
192 current->comm, current->pid);
193 error = -EINVAL;
194 break;
195
196 case PR_TERMCHILD:
197 printk("irix_prctl[%s:%d]: Wants PR_TERMCHILD\n",
198 current->comm, current->pid);
199 error = -EINVAL;
200 break;
201
202 case PR_GETSHMASK:
203 printk("irix_prctl[%s:%d]: Wants PR_GETSHMASK\n",
204 current->comm, current->pid);
205 error = -EINVAL; /* Until I have the sproc() stuff in. */
206 break;
207
208 case PR_GETNSHARE:
209 error = 0; /* Until I have the sproc() stuff in. */
210 break;
211
212 case PR_COREPID:
213 printk("irix_prctl[%s:%d]: Wants PR_COREPID\n",
214 current->comm, current->pid);
215 error = -EINVAL;
216 break;
217
218 case PR_ATTACHADDRPERM:
219 printk("irix_prctl[%s:%d]: Wants PR_ATTACHADDRPERM\n",
220 current->comm, current->pid);
221 error = -EINVAL;
222 break;
223
224 default:
225 printk("irix_prctl[%s:%d]: Non-existant opcode %d\n",
226 current->comm, current->pid, option);
227 error = -EINVAL;
228 break;
229 }
230 va_end(args);
231
232 return error;
233 }
234
235 #undef DEBUG_PROCGRPS
236
237 extern unsigned long irix_mapelf(int fd, struct elf_phdr __user *user_phdrp, int cnt);
238 extern int getrusage(struct task_struct *p, int who, struct rusage __user *ru);
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 struct itimerval it_new, it_old;
649 unsigned int oldalarm;
650
651 if (!seconds) {
652 getitimer_real(&it_old);
653 del_timer(&current->real_timer);
654 } else {
655 it_new.it_interval.tv_sec = it_new.it_interval.tv_usec = 0;
656 it_new.it_value.tv_sec = seconds;
657 it_new.it_value.tv_usec = 0;
658 do_setitimer(ITIMER_REAL, &it_new, &it_old);
659 }
660 oldalarm = it_old.it_value.tv_sec;
661 /*
662 * ehhh.. We can't return 0 if we have an alarm pending ...
663 * And we'd better return too much than too little anyway
664 */
665 if (it_old.it_value.tv_usec)
666 oldalarm++;
667
668 return oldalarm;
669 }
670
671 asmlinkage int irix_pause(void)
672 {
673 current->state = TASK_INTERRUPTIBLE;
674 schedule();
675
676 return -EINTR;
677 }
678
679 /* XXX need more than this... */
680 asmlinkage int irix_mount(char __user *dev_name, char __user *dir_name,
681 unsigned long flags, char __user *type, void __user *data, int datalen)
682 {
683 printk("[%s:%d] irix_mount(%p,%p,%08lx,%p,%p,%d)\n",
684 current->comm, current->pid,
685 dev_name, dir_name, flags, type, data, datalen);
686
687 return sys_mount(dev_name, dir_name, type, flags, data);
688 }
689
690 struct irix_statfs {
691 short f_type;
692 long f_bsize, f_frsize, f_blocks, f_bfree, f_files, f_ffree;
693 char f_fname[6], f_fpack[6];
694 };
695
696 asmlinkage int irix_statfs(const char __user *path,
697 struct irix_statfs __user *buf, int len, int fs_type)
698 {
699 struct nameidata nd;
700 struct kstatfs kbuf;
701 int error, i;
702
703 /* We don't support this feature yet. */
704 if (fs_type) {
705 error = -EINVAL;
706 goto out;
707 }
708 if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statfs))) {
709 error = -EFAULT;
710 goto out;
711 }
712
713 error = user_path_walk(path, &nd);
714 if (error)
715 goto out;
716
717 error = vfs_statfs(nd.dentry->d_inode->i_sb, &kbuf);
718 if (error)
719 goto dput_and_out;
720
721 error = __put_user(kbuf.f_type, &buf->f_type);
722 error |= __put_user(kbuf.f_bsize, &buf->f_bsize);
723 error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
724 error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
725 error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
726 error |= __put_user(kbuf.f_files, &buf->f_files);
727 error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
728 for (i = 0; i < 6; i++) {
729 error |= __put_user(0, &buf->f_fname[i]);
730 error |= __put_user(0, &buf->f_fpack[i]);
731 }
732
733 dput_and_out:
734 path_release(&nd);
735 out:
736 return error;
737 }
738
739 asmlinkage int irix_fstatfs(unsigned int fd, struct irix_statfs __user *buf)
740 {
741 struct kstatfs kbuf;
742 struct file *file;
743 int error, i;
744
745 if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statfs))) {
746 error = -EFAULT;
747 goto out;
748 }
749
750 if (!(file = fget(fd))) {
751 error = -EBADF;
752 goto out;
753 }
754
755 error = vfs_statfs(file->f_dentry->d_inode->i_sb, &kbuf);
756 if (error)
757 goto out_f;
758
759 error = __put_user(kbuf.f_type, &buf->f_type);
760 error |= __put_user(kbuf.f_bsize, &buf->f_bsize);
761 error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
762 error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
763 error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
764 error |= __put_user(kbuf.f_files, &buf->f_files);
765 error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
766
767 for (i = 0; i < 6; i++) {
768 error |= __put_user(0, &buf->f_fname[i]);
769 error |= __put_user(0, &buf->f_fpack[i]);
770 }
771
772 out_f:
773 fput(file);
774 out:
775 return error;
776 }
777
778 asmlinkage int irix_setpgrp(int flags)
779 {
780 int error;
781
782 #ifdef DEBUG_PROCGRPS
783 printk("[%s:%d] setpgrp(%d) ", current->comm, current->pid, flags);
784 #endif
785 if(!flags)
786 error = process_group(current);
787 else
788 error = sys_setsid();
789 #ifdef DEBUG_PROCGRPS
790 printk("returning %d\n", process_group(current));
791 #endif
792
793 return error;
794 }
795
796 asmlinkage int irix_times(struct tms __user *tbuf)
797 {
798 int err = 0;
799
800 if (tbuf) {
801 if (!access_ok(VERIFY_WRITE,tbuf,sizeof *tbuf))
802 return -EFAULT;
803
804 err = __put_user(current->utime, &tbuf->tms_utime);
805 err |= __put_user(current->stime, &tbuf->tms_stime);
806 err |= __put_user(current->signal->cutime, &tbuf->tms_cutime);
807 err |= __put_user(current->signal->cstime, &tbuf->tms_cstime);
808 }
809
810 return err;
811 }
812
813 asmlinkage int irix_exec(struct pt_regs *regs)
814 {
815 int error, base = 0;
816 char *filename;
817
818 if(regs->regs[2] == 1000)
819 base = 1;
820 filename = getname((char __user *) (long)regs->regs[base + 4]);
821 error = PTR_ERR(filename);
822 if (IS_ERR(filename))
823 return error;
824
825 error = do_execve(filename, (char __user * __user *) (long)regs->regs[base + 5],
826 NULL, regs);
827 putname(filename);
828
829 return error;
830 }
831
832 asmlinkage int irix_exece(struct pt_regs *regs)
833 {
834 int error, base = 0;
835 char *filename;
836
837 if (regs->regs[2] == 1000)
838 base = 1;
839 filename = getname((char __user *) (long)regs->regs[base + 4]);
840 error = PTR_ERR(filename);
841 if (IS_ERR(filename))
842 return error;
843 error = do_execve(filename, (char __user * __user *) (long)regs->regs[base + 5],
844 (char __user * __user *) (long)regs->regs[base + 6], regs);
845 putname(filename);
846
847 return error;
848 }
849
850 asmlinkage unsigned long irix_gethostid(void)
851 {
852 printk("[%s:%d]: irix_gethostid() called...\n",
853 current->comm, current->pid);
854
855 return -EINVAL;
856 }
857
858 asmlinkage unsigned long irix_sethostid(unsigned long val)
859 {
860 printk("[%s:%d]: irix_sethostid(%08lx) called...\n",
861 current->comm, current->pid, val);
862
863 return -EINVAL;
864 }
865
866 asmlinkage int irix_socket(int family, int type, int protocol)
867 {
868 switch(type) {
869 case 1:
870 type = SOCK_DGRAM;
871 break;
872
873 case 2:
874 type = SOCK_STREAM;
875 break;
876
877 case 3:
878 type = 9; /* Invalid... */
879 break;
880
881 case 4:
882 type = SOCK_RAW;
883 break;
884
885 case 5:
886 type = SOCK_RDM;
887 break;
888
889 case 6:
890 type = SOCK_SEQPACKET;
891 break;
892
893 default:
894 break;
895 }
896
897 return sys_socket(family, type, protocol);
898 }
899
900 asmlinkage int irix_getdomainname(char __user *name, int len)
901 {
902 int err;
903
904 down_read(&uts_sem);
905 if (len > __NEW_UTS_LEN)
906 len = __NEW_UTS_LEN;
907 err = copy_to_user(name, system_utsname.domainname, len) ? -EFAULT : 0;
908 up_read(&uts_sem);
909
910 return err;
911 }
912
913 asmlinkage unsigned long irix_getpagesize(void)
914 {
915 return PAGE_SIZE;
916 }
917
918 asmlinkage int irix_msgsys(int opcode, unsigned long arg0, unsigned long arg1,
919 unsigned long arg2, unsigned long arg3,
920 unsigned long arg4)
921 {
922 switch (opcode) {
923 case 0:
924 return sys_msgget((key_t) arg0, (int) arg1);
925 case 1:
926 return sys_msgctl((int) arg0, (int) arg1,
927 (struct msqid_ds __user *)arg2);
928 case 2:
929 return sys_msgrcv((int) arg0, (struct msgbuf __user *) arg1,
930 (size_t) arg2, (long) arg3, (int) arg4);
931 case 3:
932 return sys_msgsnd((int) arg0, (struct msgbuf __user *) arg1,
933 (size_t) arg2, (int) arg3);
934 default:
935 return -EINVAL;
936 }
937 }
938
939 asmlinkage int irix_shmsys(int opcode, unsigned long arg0, unsigned long arg1,
940 unsigned long arg2, unsigned long arg3)
941 {
942 switch (opcode) {
943 case 0:
944 return do_shmat((int) arg0, (char __user *) arg1, (int) arg2,
945 (unsigned long *) arg3);
946 case 1:
947 return sys_shmctl((int)arg0, (int)arg1,
948 (struct shmid_ds __user *)arg2);
949 case 2:
950 return sys_shmdt((char __user *)arg0);
951 case 3:
952 return sys_shmget((key_t) arg0, (int) arg1, (int) arg2);
953 default:
954 return -EINVAL;
955 }
956 }
957
958 asmlinkage int irix_semsys(int opcode, unsigned long arg0, unsigned long arg1,
959 unsigned long arg2, int arg3)
960 {
961 switch (opcode) {
962 case 0:
963 return sys_semctl((int) arg0, (int) arg1, (int) arg2,
964 (union semun) arg3);
965 case 1:
966 return sys_semget((key_t) arg0, (int) arg1, (int) arg2);
967 case 2:
968 return sys_semop((int) arg0, (struct sembuf __user *)arg1,
969 (unsigned int) arg2);
970 default:
971 return -EINVAL;
972 }
973 }
974
975 static inline loff_t llseek(struct file *file, loff_t offset, int origin)
976 {
977 loff_t (*fn)(struct file *, loff_t, int);
978 loff_t retval;
979
980 fn = default_llseek;
981 if (file->f_op && file->f_op->llseek)
982 fn = file->f_op->llseek;
983 lock_kernel();
984 retval = fn(file, offset, origin);
985 unlock_kernel();
986
987 return retval;
988 }
989
990 asmlinkage int irix_lseek64(int fd, int _unused, int offhi, int offlow,
991 int origin)
992 {
993 struct file * file;
994 loff_t offset;
995 int retval;
996
997 retval = -EBADF;
998 file = fget(fd);
999 if (!file)
1000 goto bad;
1001 retval = -EINVAL;
1002 if (origin > 2)
1003 goto out_putf;
1004
1005 offset = llseek(file, ((loff_t) offhi << 32) | offlow, origin);
1006 retval = (int) offset;
1007
1008 out_putf:
1009 fput(file);
1010 bad:
1011 return retval;
1012 }
1013
1014 asmlinkage int irix_sginap(int ticks)
1015 {
1016 schedule_timeout_interruptible(ticks);
1017 return 0;
1018 }
1019
1020 asmlinkage int irix_sgikopt(char __user *istring, char __user *ostring, int len)
1021 {
1022 return -EINVAL;
1023 }
1024
1025 asmlinkage int irix_gettimeofday(struct timeval __user *tv)
1026 {
1027 time_t sec;
1028 long nsec, seq;
1029 int err;
1030
1031 if (!access_ok(VERIFY_WRITE, tv, sizeof(struct timeval)))
1032 return -EFAULT;
1033
1034 do {
1035 seq = read_seqbegin(&xtime_lock);
1036 sec = xtime.tv_sec;
1037 nsec = xtime.tv_nsec;
1038 } while (read_seqretry(&xtime_lock, seq));
1039
1040 err = __put_user(sec, &tv->tv_sec);
1041 err |= __put_user((nsec / 1000), &tv->tv_usec);
1042
1043 return err;
1044 }
1045
1046 #define IRIX_MAP_AUTOGROW 0x40
1047
1048 asmlinkage unsigned long irix_mmap32(unsigned long addr, size_t len, int prot,
1049 int flags, int fd, off_t offset)
1050 {
1051 struct file *file = NULL;
1052 unsigned long retval;
1053
1054 if (!(flags & MAP_ANONYMOUS)) {
1055 if (!(file = fget(fd)))
1056 return -EBADF;
1057
1058 /* Ok, bad taste hack follows, try to think in something else
1059 * when reading this. */
1060 if (flags & IRIX_MAP_AUTOGROW) {
1061 unsigned long old_pos;
1062 long max_size = offset + len;
1063
1064 if (max_size > file->f_dentry->d_inode->i_size) {
1065 old_pos = sys_lseek (fd, max_size - 1, 0);
1066 sys_write (fd, (void __user *) "", 1);
1067 sys_lseek (fd, old_pos, 0);
1068 }
1069 }
1070 }
1071
1072 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
1073
1074 down_write(&current->mm->mmap_sem);
1075 retval = do_mmap(file, addr, len, prot, flags, offset);
1076 up_write(&current->mm->mmap_sem);
1077 if (file)
1078 fput(file);
1079
1080 return retval;
1081 }
1082
1083 asmlinkage int irix_madvise(unsigned long addr, int len, int behavior)
1084 {
1085 printk("[%s:%d] Wheee.. irix_madvise(%08lx,%d,%d)\n",
1086 current->comm, current->pid, addr, len, behavior);
1087
1088 return -EINVAL;
1089 }
1090
1091 asmlinkage int irix_pagelock(char __user *addr, int len, int op)
1092 {
1093 printk("[%s:%d] Wheee.. irix_pagelock(%p,%d,%d)\n",
1094 current->comm, current->pid, addr, len, op);
1095
1096 return -EINVAL;
1097 }
1098
1099 asmlinkage int irix_quotactl(struct pt_regs *regs)
1100 {
1101 printk("[%s:%d] Wheee.. irix_quotactl()\n",
1102 current->comm, current->pid);
1103
1104 return -EINVAL;
1105 }
1106
1107 asmlinkage int irix_BSDsetpgrp(int pid, int pgrp)
1108 {
1109 int error;
1110
1111 #ifdef DEBUG_PROCGRPS
1112 printk("[%s:%d] BSDsetpgrp(%d, %d) ", current->comm, current->pid,
1113 pid, pgrp);
1114 #endif
1115 if(!pid)
1116 pid = current->pid;
1117
1118 /* Wheee, weird sysv thing... */
1119 if ((pgrp == 0) && (pid == current->pid))
1120 error = sys_setsid();
1121 else
1122 error = sys_setpgid(pid, pgrp);
1123
1124 #ifdef DEBUG_PROCGRPS
1125 printk("error = %d\n", error);
1126 #endif
1127
1128 return error;
1129 }
1130
1131 asmlinkage int irix_systeminfo(int cmd, char __user *buf, int cnt)
1132 {
1133 printk("[%s:%d] Wheee.. irix_systeminfo(%d,%p,%d)\n",
1134 current->comm, current->pid, cmd, buf, cnt);
1135
1136 return -EINVAL;
1137 }
1138
1139 struct iuname {
1140 char sysname[257], nodename[257], release[257];
1141 char version[257], machine[257];
1142 char m_type[257], base_rel[257];
1143 char _unused0[257], _unused1[257], _unused2[257];
1144 char _unused3[257], _unused4[257], _unused5[257];
1145 };
1146
1147 asmlinkage int irix_uname(struct iuname __user *buf)
1148 {
1149 down_read(&uts_sem);
1150 if (copy_from_user(system_utsname.sysname, buf->sysname, 65)
1151 || copy_from_user(system_utsname.nodename, buf->nodename, 65)
1152 || copy_from_user(system_utsname.release, buf->release, 65)
1153 || copy_from_user(system_utsname.version, buf->version, 65)
1154 || copy_from_user(system_utsname.machine, buf->machine, 65)) {
1155 return -EFAULT;
1156 }
1157 up_read(&uts_sem);
1158
1159 return 1;
1160 }
1161
1162 #undef DEBUG_XSTAT
1163
1164 static int irix_xstat32_xlate(struct kstat *stat, void __user *ubuf)
1165 {
1166 struct xstat32 {
1167 u32 st_dev, st_pad1[3], st_ino, st_mode, st_nlink, st_uid, st_gid;
1168 u32 st_rdev, st_pad2[2], st_size, st_pad3;
1169 u32 st_atime0, st_atime1;
1170 u32 st_mtime0, st_mtime1;
1171 u32 st_ctime0, st_ctime1;
1172 u32 st_blksize, st_blocks;
1173 char st_fstype[16];
1174 u32 st_pad4[8];
1175 } ub;
1176
1177 if (!sysv_valid_dev(stat->dev) || !sysv_valid_dev(stat->rdev))
1178 return -EOVERFLOW;
1179 ub.st_dev = sysv_encode_dev(stat->dev);
1180 ub.st_ino = stat->ino;
1181 ub.st_mode = stat->mode;
1182 ub.st_nlink = stat->nlink;
1183 SET_UID(ub.st_uid, stat->uid);
1184 SET_GID(ub.st_gid, stat->gid);
1185 ub.st_rdev = sysv_encode_dev(stat->rdev);
1186 #if BITS_PER_LONG == 32
1187 if (stat->size > MAX_NON_LFS)
1188 return -EOVERFLOW;
1189 #endif
1190 ub.st_size = stat->size;
1191 ub.st_atime0 = stat->atime.tv_sec;
1192 ub.st_atime1 = stat->atime.tv_nsec;
1193 ub.st_mtime0 = stat->mtime.tv_sec;
1194 ub.st_mtime1 = stat->atime.tv_nsec;
1195 ub.st_ctime0 = stat->ctime.tv_sec;
1196 ub.st_ctime1 = stat->atime.tv_nsec;
1197 ub.st_blksize = stat->blksize;
1198 ub.st_blocks = stat->blocks;
1199 strcpy (ub.st_fstype, "efs");
1200
1201 return copy_to_user(ubuf, &ub, sizeof(ub)) ? -EFAULT : 0;
1202 }
1203
1204 static int irix_xstat64_xlate(struct kstat *stat, void __user *ubuf)
1205 {
1206 struct xstat64 {
1207 u32 st_dev; s32 st_pad1[3];
1208 unsigned long long st_ino;
1209 u32 st_mode;
1210 u32 st_nlink; s32 st_uid; s32 st_gid; u32 st_rdev;
1211 s32 st_pad2[2];
1212 long long st_size;
1213 s32 st_pad3;
1214 struct { s32 tv_sec, tv_nsec; } st_atime, st_mtime, st_ctime;
1215 s32 st_blksize;
1216 long long st_blocks;
1217 char st_fstype[16];
1218 s32 st_pad4[8];
1219 } ks;
1220
1221 if (!sysv_valid_dev(stat->dev) || !sysv_valid_dev(stat->rdev))
1222 return -EOVERFLOW;
1223
1224 ks.st_dev = sysv_encode_dev(stat->dev);
1225 ks.st_pad1[0] = ks.st_pad1[1] = ks.st_pad1[2] = 0;
1226 ks.st_ino = (unsigned long long) stat->ino;
1227 ks.st_mode = (u32) stat->mode;
1228 ks.st_nlink = (u32) stat->nlink;
1229 ks.st_uid = (s32) stat->uid;
1230 ks.st_gid = (s32) stat->gid;
1231 ks.st_rdev = sysv_encode_dev (stat->rdev);
1232 ks.st_pad2[0] = ks.st_pad2[1] = 0;
1233 ks.st_size = (long long) stat->size;
1234 ks.st_pad3 = 0;
1235
1236 /* XXX hackety hack... */
1237 ks.st_atime.tv_sec = (s32) stat->atime.tv_sec;
1238 ks.st_atime.tv_nsec = stat->atime.tv_nsec;
1239 ks.st_mtime.tv_sec = (s32) stat->mtime.tv_sec;
1240 ks.st_mtime.tv_nsec = stat->mtime.tv_nsec;
1241 ks.st_ctime.tv_sec = (s32) stat->ctime.tv_sec;
1242 ks.st_ctime.tv_nsec = stat->ctime.tv_nsec;
1243
1244 ks.st_blksize = (s32) stat->blksize;
1245 ks.st_blocks = (long long) stat->blocks;
1246 memset(ks.st_fstype, 0, 16);
1247 ks.st_pad4[0] = ks.st_pad4[1] = ks.st_pad4[2] = ks.st_pad4[3] = 0;
1248 ks.st_pad4[4] = ks.st_pad4[5] = ks.st_pad4[6] = ks.st_pad4[7] = 0;
1249
1250 /* Now write it all back. */
1251 return copy_to_user(ubuf, &ks, sizeof(ks)) ? -EFAULT : 0;
1252 }
1253
1254 asmlinkage int irix_xstat(int version, char __user *filename, struct stat __user *statbuf)
1255 {
1256 int retval;
1257 struct kstat stat;
1258
1259 #ifdef DEBUG_XSTAT
1260 printk("[%s:%d] Wheee.. irix_xstat(%d,%s,%p) ",
1261 current->comm, current->pid, version, filename, statbuf);
1262 #endif
1263
1264 retval = vfs_stat(filename, &stat);
1265 if (!retval) {
1266 switch(version) {
1267 case 2:
1268 retval = irix_xstat32_xlate(&stat, statbuf);
1269 break;
1270 case 3:
1271 retval = irix_xstat64_xlate(&stat, statbuf);
1272 break;
1273 default:
1274 retval = -EINVAL;
1275 }
1276 }
1277 return retval;
1278 }
1279
1280 asmlinkage int irix_lxstat(int version, char __user *filename, struct stat __user *statbuf)
1281 {
1282 int error;
1283 struct kstat stat;
1284
1285 #ifdef DEBUG_XSTAT
1286 printk("[%s:%d] Wheee.. irix_lxstat(%d,%s,%p) ",
1287 current->comm, current->pid, version, filename, statbuf);
1288 #endif
1289
1290 error = vfs_lstat(filename, &stat);
1291
1292 if (!error) {
1293 switch (version) {
1294 case 2:
1295 error = irix_xstat32_xlate(&stat, statbuf);
1296 break;
1297 case 3:
1298 error = irix_xstat64_xlate(&stat, statbuf);
1299 break;
1300 default:
1301 error = -EINVAL;
1302 }
1303 }
1304 return error;
1305 }
1306
1307 asmlinkage int irix_fxstat(int version, int fd, struct stat __user *statbuf)
1308 {
1309 int error;
1310 struct kstat stat;
1311
1312 #ifdef DEBUG_XSTAT
1313 printk("[%s:%d] Wheee.. irix_fxstat(%d,%d,%p) ",
1314 current->comm, current->pid, version, fd, statbuf);
1315 #endif
1316
1317 error = vfs_fstat(fd, &stat);
1318 if (!error) {
1319 switch (version) {
1320 case 2:
1321 error = irix_xstat32_xlate(&stat, statbuf);
1322 break;
1323 case 3:
1324 error = irix_xstat64_xlate(&stat, statbuf);
1325 break;
1326 default:
1327 error = -EINVAL;
1328 }
1329 }
1330 return error;
1331 }
1332
1333 asmlinkage int irix_xmknod(int ver, char __user *filename, int mode, unsigned dev)
1334 {
1335 int retval;
1336 printk("[%s:%d] Wheee.. irix_xmknod(%d,%s,%x,%x)\n",
1337 current->comm, current->pid, ver, filename, mode, dev);
1338
1339 switch(ver) {
1340 case 2:
1341 /* shouldn't we convert here as well as on stat()? */
1342 retval = sys_mknod(filename, mode, dev);
1343 break;
1344
1345 default:
1346 retval = -EINVAL;
1347 break;
1348 };
1349
1350 return retval;
1351 }
1352
1353 asmlinkage int irix_swapctl(int cmd, char __user *arg)
1354 {
1355 printk("[%s:%d] Wheee.. irix_swapctl(%d,%p)\n",
1356 current->comm, current->pid, cmd, arg);
1357
1358 return -EINVAL;
1359 }
1360
1361 struct irix_statvfs {
1362 u32 f_bsize; u32 f_frsize; u32 f_blocks;
1363 u32 f_bfree; u32 f_bavail; u32 f_files; u32 f_ffree; u32 f_favail;
1364 u32 f_fsid; char f_basetype[16];
1365 u32 f_flag; u32 f_namemax;
1366 char f_fstr[32]; u32 f_filler[16];
1367 };
1368
1369 asmlinkage int irix_statvfs(char __user *fname, struct irix_statvfs __user *buf)
1370 {
1371 struct nameidata nd;
1372 struct kstatfs kbuf;
1373 int error, i;
1374
1375 printk("[%s:%d] Wheee.. irix_statvfs(%s,%p)\n",
1376 current->comm, current->pid, fname, buf);
1377 if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs)))
1378 return -EFAULT;
1379
1380 error = user_path_walk(fname, &nd);
1381 if (error)
1382 goto out;
1383 error = vfs_statfs(nd.dentry->d_inode->i_sb, &kbuf);
1384 if (error)
1385 goto dput_and_out;
1386
1387 error |= __put_user(kbuf.f_bsize, &buf->f_bsize);
1388 error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
1389 error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
1390 error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
1391 error |= __put_user(kbuf.f_bfree, &buf->f_bavail); /* XXX hackety hack... */
1392 error |= __put_user(kbuf.f_files, &buf->f_files);
1393 error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
1394 error |= __put_user(kbuf.f_ffree, &buf->f_favail); /* XXX hackety hack... */
1395 #ifdef __MIPSEB__
1396 error |= __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
1397 #else
1398 error |= __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
1399 #endif
1400 for (i = 0; i < 16; i++)
1401 error |= __put_user(0, &buf->f_basetype[i]);
1402 error |= __put_user(0, &buf->f_flag);
1403 error |= __put_user(kbuf.f_namelen, &buf->f_namemax);
1404 for (i = 0; i < 32; i++)
1405 error |= __put_user(0, &buf->f_fstr[i]);
1406
1407 dput_and_out:
1408 path_release(&nd);
1409 out:
1410 return error;
1411 }
1412
1413 asmlinkage int irix_fstatvfs(int fd, struct irix_statvfs __user *buf)
1414 {
1415 struct kstatfs kbuf;
1416 struct file *file;
1417 int error, i;
1418
1419 printk("[%s:%d] Wheee.. irix_fstatvfs(%d,%p)\n",
1420 current->comm, current->pid, fd, buf);
1421
1422 if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs)))
1423 return -EFAULT;
1424
1425 if (!(file = fget(fd))) {
1426 error = -EBADF;
1427 goto out;
1428 }
1429 error = vfs_statfs(file->f_dentry->d_inode->i_sb, &kbuf);
1430 if (error)
1431 goto out_f;
1432
1433 error = __put_user(kbuf.f_bsize, &buf->f_bsize);
1434 error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
1435 error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
1436 error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
1437 error |= __put_user(kbuf.f_bfree, &buf->f_bavail); /* XXX hackety hack... */
1438 error |= __put_user(kbuf.f_files, &buf->f_files);
1439 error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
1440 error |= __put_user(kbuf.f_ffree, &buf->f_favail); /* XXX hackety hack... */
1441 #ifdef __MIPSEB__
1442 error |= __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
1443 #else
1444 error |= __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
1445 #endif
1446 for(i = 0; i < 16; i++)
1447 error |= __put_user(0, &buf->f_basetype[i]);
1448 error |= __put_user(0, &buf->f_flag);
1449 error |= __put_user(kbuf.f_namelen, &buf->f_namemax);
1450 error |= __clear_user(&buf->f_fstr, sizeof(buf->f_fstr)) ? -EFAULT : 0;
1451
1452 out_f:
1453 fput(file);
1454 out:
1455 return error;
1456 }
1457
1458 asmlinkage int irix_priocntl(struct pt_regs *regs)
1459 {
1460 printk("[%s:%d] Wheee.. irix_priocntl()\n",
1461 current->comm, current->pid);
1462
1463 return -EINVAL;
1464 }
1465
1466 asmlinkage int irix_sigqueue(int pid, int sig, int code, int val)
1467 {
1468 printk("[%s:%d] Wheee.. irix_sigqueue(%d,%d,%d,%d)\n",
1469 current->comm, current->pid, pid, sig, code, val);
1470
1471 return -EINVAL;
1472 }
1473
1474 asmlinkage int irix_truncate64(char __user *name, int pad, int size1, int size2)
1475 {
1476 int retval;
1477
1478 if (size1) {
1479 retval = -EINVAL;
1480 goto out;
1481 }
1482 retval = sys_truncate(name, size2);
1483
1484 out:
1485 return retval;
1486 }
1487
1488 asmlinkage int irix_ftruncate64(int fd, int pad, int size1, int size2)
1489 {
1490 int retval;
1491
1492 if (size1) {
1493 retval = -EINVAL;
1494 goto out;
1495 }
1496 retval = sys_ftruncate(fd, size2);
1497
1498 out:
1499 return retval;
1500 }
1501
1502 asmlinkage int irix_mmap64(struct pt_regs *regs)
1503 {
1504 int len, prot, flags, fd, off1, off2, error, base = 0;
1505 unsigned long addr, pgoff, *sp;
1506 struct file *file = NULL;
1507 int err;
1508
1509 if (regs->regs[2] == 1000)
1510 base = 1;
1511 sp = (unsigned long *) (regs->regs[29] + 16);
1512 addr = regs->regs[base + 4];
1513 len = regs->regs[base + 5];
1514 prot = regs->regs[base + 6];
1515 if (!base) {
1516 flags = regs->regs[base + 7];
1517 if (!access_ok(VERIFY_READ, sp, (4 * sizeof(unsigned long))))
1518 return -EFAULT;
1519 fd = sp[0];
1520 err = __get_user(off1, &sp[1]);
1521 err |= __get_user(off2, &sp[2]);
1522 } else {
1523 if (!access_ok(VERIFY_READ, sp, (5 * sizeof(unsigned long))))
1524 return -EFAULT;
1525 err = __get_user(flags, &sp[0]);
1526 err |= __get_user(fd, &sp[1]);
1527 err |= __get_user(off1, &sp[2]);
1528 err |= __get_user(off2, &sp[3]);
1529 }
1530
1531 if (err)
1532 return err;
1533
1534 if (off1 & PAGE_MASK)
1535 return -EOVERFLOW;
1536
1537 pgoff = (off1 << (32 - PAGE_SHIFT)) | (off2 >> PAGE_SHIFT);
1538
1539 if (!(flags & MAP_ANONYMOUS)) {
1540 if (!(file = fget(fd)))
1541 return -EBADF;
1542
1543 /* Ok, bad taste hack follows, try to think in something else
1544 when reading this */
1545 if (flags & IRIX_MAP_AUTOGROW) {
1546 unsigned long old_pos;
1547 long max_size = off2 + len;
1548
1549 if (max_size > file->f_dentry->d_inode->i_size) {
1550 old_pos = sys_lseek (fd, max_size - 1, 0);
1551 sys_write (fd, (void __user *) "", 1);
1552 sys_lseek (fd, old_pos, 0);
1553 }
1554 }
1555 }
1556
1557 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
1558
1559 down_write(&current->mm->mmap_sem);
1560 error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
1561 up_write(&current->mm->mmap_sem);
1562
1563 if (file)
1564 fput(file);
1565
1566 return error;
1567 }
1568
1569 asmlinkage int irix_dmi(struct pt_regs *regs)
1570 {
1571 printk("[%s:%d] Wheee.. irix_dmi()\n",
1572 current->comm, current->pid);
1573
1574 return -EINVAL;
1575 }
1576
1577 asmlinkage int irix_pread(int fd, char __user *buf, int cnt, int off64,
1578 int off1, int off2)
1579 {
1580 printk("[%s:%d] Wheee.. irix_pread(%d,%p,%d,%d,%d,%d)\n",
1581 current->comm, current->pid, fd, buf, cnt, off64, off1, off2);
1582
1583 return -EINVAL;
1584 }
1585
1586 asmlinkage int irix_pwrite(int fd, char __user *buf, int cnt, int off64,
1587 int off1, int off2)
1588 {
1589 printk("[%s:%d] Wheee.. irix_pwrite(%d,%p,%d,%d,%d,%d)\n",
1590 current->comm, current->pid, fd, buf, cnt, off64, off1, off2);
1591
1592 return -EINVAL;
1593 }
1594
1595 asmlinkage int irix_sgifastpath(int cmd, unsigned long arg0, unsigned long arg1,
1596 unsigned long arg2, unsigned long arg3,
1597 unsigned long arg4, unsigned long arg5)
1598 {
1599 printk("[%s:%d] Wheee.. irix_fastpath(%d,%08lx,%08lx,%08lx,%08lx,"
1600 "%08lx,%08lx)\n",
1601 current->comm, current->pid, cmd, arg0, arg1, arg2,
1602 arg3, arg4, arg5);
1603
1604 return -EINVAL;
1605 }
1606
1607 struct irix_statvfs64 {
1608 u32 f_bsize; u32 f_frsize;
1609 u64 f_blocks; u64 f_bfree; u64 f_bavail;
1610 u64 f_files; u64 f_ffree; u64 f_favail;
1611 u32 f_fsid;
1612 char f_basetype[16];
1613 u32 f_flag; u32 f_namemax;
1614 char f_fstr[32];
1615 u32 f_filler[16];
1616 };
1617
1618 asmlinkage int irix_statvfs64(char __user *fname, struct irix_statvfs64 __user *buf)
1619 {
1620 struct nameidata nd;
1621 struct kstatfs kbuf;
1622 int error, i;
1623
1624 printk("[%s:%d] Wheee.. irix_statvfs64(%s,%p)\n",
1625 current->comm, current->pid, fname, buf);
1626 if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs64))) {
1627 error = -EFAULT;
1628 goto out;
1629 }
1630
1631 error = user_path_walk(fname, &nd);
1632 if (error)
1633 goto out;
1634 error = vfs_statfs(nd.dentry->d_inode->i_sb, &kbuf);
1635 if (error)
1636 goto dput_and_out;
1637
1638 error = __put_user(kbuf.f_bsize, &buf->f_bsize);
1639 error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
1640 error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
1641 error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
1642 error |= __put_user(kbuf.f_bfree, &buf->f_bavail); /* XXX hackety hack... */
1643 error |= __put_user(kbuf.f_files, &buf->f_files);
1644 error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
1645 error |= __put_user(kbuf.f_ffree, &buf->f_favail); /* XXX hackety hack... */
1646 #ifdef __MIPSEB__
1647 error |= __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
1648 #else
1649 error |= __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
1650 #endif
1651 for(i = 0; i < 16; i++)
1652 error |= __put_user(0, &buf->f_basetype[i]);
1653 error |= __put_user(0, &buf->f_flag);
1654 error |= __put_user(kbuf.f_namelen, &buf->f_namemax);
1655 for(i = 0; i < 32; i++)
1656 error |= __put_user(0, &buf->f_fstr[i]);
1657
1658 dput_and_out:
1659 path_release(&nd);
1660 out:
1661 return error;
1662 }
1663
1664 asmlinkage int irix_fstatvfs64(int fd, struct irix_statvfs __user *buf)
1665 {
1666 struct kstatfs kbuf;
1667 struct file *file;
1668 int error, i;
1669
1670 printk("[%s:%d] Wheee.. irix_fstatvfs64(%d,%p)\n",
1671 current->comm, current->pid, fd, buf);
1672
1673 if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs))) {
1674 error = -EFAULT;
1675 goto out;
1676 }
1677 if (!(file = fget(fd))) {
1678 error = -EBADF;
1679 goto out;
1680 }
1681 error = vfs_statfs(file->f_dentry->d_inode->i_sb, &kbuf);
1682 if (error)
1683 goto out_f;
1684
1685 error = __put_user(kbuf.f_bsize, &buf->f_bsize);
1686 error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
1687 error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
1688 error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
1689 error |= __put_user(kbuf.f_bfree, &buf->f_bavail); /* XXX hackety hack... */
1690 error |= __put_user(kbuf.f_files, &buf->f_files);
1691 error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
1692 error |= __put_user(kbuf.f_ffree, &buf->f_favail); /* XXX hackety hack... */
1693 #ifdef __MIPSEB__
1694 error |= __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
1695 #else
1696 error |= __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
1697 #endif
1698 for(i = 0; i < 16; i++)
1699 error |= __put_user(0, &buf->f_basetype[i]);
1700 error |= __put_user(0, &buf->f_flag);
1701 error |= __put_user(kbuf.f_namelen, &buf->f_namemax);
1702 error |= __clear_user(buf->f_fstr, sizeof(buf->f_fstr[i])) ? -EFAULT : 0;
1703
1704 out_f:
1705 fput(file);
1706 out:
1707 return error;
1708 }
1709
1710 asmlinkage int irix_getmountid(char __user *fname, unsigned long __user *midbuf)
1711 {
1712 int err;
1713
1714 printk("[%s:%d] irix_getmountid(%s, %p)\n",
1715 current->comm, current->pid, fname, midbuf);
1716 if (!access_ok(VERIFY_WRITE, midbuf, (sizeof(unsigned long) * 4)))
1717 return -EFAULT;
1718
1719 /*
1720 * The idea with this system call is that when trying to determine
1721 * 'pwd' and it's a toss-up for some reason, userland can use the
1722 * fsid of the filesystem to try and make the right decision, but
1723 * we don't have this so for now. XXX
1724 */
1725 err = __put_user(0, &midbuf[0]);
1726 err |= __put_user(0, &midbuf[1]);
1727 err |= __put_user(0, &midbuf[2]);
1728 err |= __put_user(0, &midbuf[3]);
1729
1730 return err;
1731 }
1732
1733 asmlinkage int irix_nsproc(unsigned long entry, unsigned long mask,
1734 unsigned long arg, unsigned long sp, int slen)
1735 {
1736 printk("[%s:%d] Wheee.. irix_nsproc(%08lx,%08lx,%08lx,%08lx,%d)\n",
1737 current->comm, current->pid, entry, mask, arg, sp, slen);
1738
1739 return -EINVAL;
1740 }
1741
1742 #undef DEBUG_GETDENTS
1743
1744 struct irix_dirent32 {
1745 u32 d_ino;
1746 u32 d_off;
1747 unsigned short d_reclen;
1748 char d_name[1];
1749 };
1750
1751 struct irix_dirent32_callback {
1752 struct irix_dirent32 __user *current_dir;
1753 struct irix_dirent32 __user *previous;
1754 int count;
1755 int error;
1756 };
1757
1758 #define NAME_OFFSET32(de) ((int) ((de)->d_name - (char *) (de)))
1759 #define ROUND_UP32(x) (((x)+sizeof(u32)-1) & ~(sizeof(u32)-1))
1760
1761 static int irix_filldir32(void *__buf, const char *name,
1762 int namlen, loff_t offset, ino_t ino, unsigned int d_type)
1763 {
1764 struct irix_dirent32 __user *dirent;
1765 struct irix_dirent32_callback *buf = __buf;
1766 unsigned short reclen = ROUND_UP32(NAME_OFFSET32(dirent) + namlen + 1);
1767 int err = 0;
1768
1769 #ifdef DEBUG_GETDENTS
1770 printk("\nirix_filldir32[reclen<%d>namlen<%d>count<%d>]",
1771 reclen, namlen, buf->count);
1772 #endif
1773 buf->error = -EINVAL; /* only used if we fail.. */
1774 if (reclen > buf->count)
1775 return -EINVAL;
1776 dirent = buf->previous;
1777 if (dirent)
1778 err = __put_user(offset, &dirent->d_off);
1779 dirent = buf->current_dir;
1780 err |= __put_user(dirent, &buf->previous);
1781 err |= __put_user(ino, &dirent->d_ino);
1782 err |= __put_user(reclen, &dirent->d_reclen);
1783 err |= copy_to_user((char __user *)dirent->d_name, name, namlen) ? -EFAULT : 0;
1784 err |= __put_user(0, &dirent->d_name[namlen]);
1785 dirent = (struct irix_dirent32 __user *) ((char __user *) dirent + reclen);
1786
1787 buf->current_dir = dirent;
1788 buf->count -= reclen;
1789
1790 return err;
1791 }
1792
1793 asmlinkage int irix_ngetdents(unsigned int fd, void __user * dirent,
1794 unsigned int count, int __user *eob)
1795 {
1796 struct file *file;
1797 struct irix_dirent32 __user *lastdirent;
1798 struct irix_dirent32_callback buf;
1799 int error;
1800
1801 #ifdef DEBUG_GETDENTS
1802 printk("[%s:%d] ngetdents(%d, %p, %d, %p) ", current->comm,
1803 current->pid, fd, dirent, count, eob);
1804 #endif
1805 error = -EBADF;
1806 file = fget(fd);
1807 if (!file)
1808 goto out;
1809
1810 buf.current_dir = (struct irix_dirent32 __user *) dirent;
1811 buf.previous = NULL;
1812 buf.count = count;
1813 buf.error = 0;
1814
1815 error = vfs_readdir(file, irix_filldir32, &buf);
1816 if (error < 0)
1817 goto out_putf;
1818
1819 error = buf.error;
1820 lastdirent = buf.previous;
1821 if (lastdirent) {
1822 put_user(file->f_pos, &lastdirent->d_off);
1823 error = count - buf.count;
1824 }
1825
1826 if (put_user(0, eob) < 0) {
1827 error = -EFAULT;
1828 goto out_putf;
1829 }
1830
1831 #ifdef DEBUG_GETDENTS
1832 printk("eob=%d returning %d\n", *eob, count - buf.count);
1833 #endif
1834 error = count - buf.count;
1835
1836 out_putf:
1837 fput(file);
1838 out:
1839 return error;
1840 }
1841
1842 struct irix_dirent64 {
1843 u64 d_ino;
1844 u64 d_off;
1845 unsigned short d_reclen;
1846 char d_name[1];
1847 };
1848
1849 struct irix_dirent64_callback {
1850 struct irix_dirent64 __user *curr;
1851 struct irix_dirent64 __user *previous;
1852 int count;
1853 int error;
1854 };
1855
1856 #define NAME_OFFSET64(de) ((int) ((de)->d_name - (char *) (de)))
1857 #define ROUND_UP64(x) (((x)+sizeof(u64)-1) & ~(sizeof(u64)-1))
1858
1859 static int irix_filldir64(void *__buf, const char *name,
1860 int namlen, loff_t offset, ino_t ino, unsigned int d_type)
1861 {
1862 struct irix_dirent64 __user *dirent;
1863 struct irix_dirent64_callback * buf = __buf;
1864 unsigned short reclen = ROUND_UP64(NAME_OFFSET64(dirent) + namlen + 1);
1865 int err = 0;
1866
1867 if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf)))
1868 return -EFAULT;
1869
1870 if (__put_user(-EINVAL, &buf->error)) /* only used if we fail.. */
1871 return -EFAULT;
1872 if (reclen > buf->count)
1873 return -EINVAL;
1874 dirent = buf->previous;
1875 if (dirent)
1876 err = __put_user(offset, &dirent->d_off);
1877 dirent = buf->curr;
1878 buf->previous = dirent;
1879 err |= __put_user(ino, &dirent->d_ino);
1880 err |= __put_user(reclen, &dirent->d_reclen);
1881 err |= __copy_to_user((char __user *)dirent->d_name, name, namlen)
1882 ? -EFAULT : 0;
1883 err |= __put_user(0, &dirent->d_name[namlen]);
1884
1885 dirent = (struct irix_dirent64 __user *) ((char __user *) dirent + reclen);
1886
1887 buf->curr = dirent;
1888 buf->count -= reclen;
1889
1890 return err;
1891 }
1892
1893 asmlinkage int irix_getdents64(int fd, void __user *dirent, int cnt)
1894 {
1895 struct file *file;
1896 struct irix_dirent64 __user *lastdirent;
1897 struct irix_dirent64_callback buf;
1898 int error;
1899
1900 #ifdef DEBUG_GETDENTS
1901 printk("[%s:%d] getdents64(%d, %p, %d) ", current->comm,
1902 current->pid, fd, dirent, cnt);
1903 #endif
1904 error = -EBADF;
1905 if (!(file = fget(fd)))
1906 goto out;
1907
1908 error = -EFAULT;
1909 if (!access_ok(VERIFY_WRITE, dirent, cnt))
1910 goto out_f;
1911
1912 error = -EINVAL;
1913 if (cnt < (sizeof(struct irix_dirent64) + 255))
1914 goto out_f;
1915
1916 buf.curr = (struct irix_dirent64 __user *) dirent;
1917 buf.previous = NULL;
1918 buf.count = cnt;
1919 buf.error = 0;
1920 error = vfs_readdir(file, irix_filldir64, &buf);
1921 if (error < 0)
1922 goto out_f;
1923 lastdirent = buf.previous;
1924 if (!lastdirent) {
1925 error = buf.error;
1926 goto out_f;
1927 }
1928 if (put_user(file->f_pos, &lastdirent->d_off))
1929 return -EFAULT;
1930 #ifdef DEBUG_GETDENTS
1931 printk("returning %d\n", cnt - buf.count);
1932 #endif
1933 error = cnt - buf.count;
1934
1935 out_f:
1936 fput(file);
1937 out:
1938 return error;
1939 }
1940
1941 asmlinkage int irix_ngetdents64(int fd, void __user *dirent, int cnt, int *eob)
1942 {
1943 struct file *file;
1944 struct irix_dirent64 __user *lastdirent;
1945 struct irix_dirent64_callback buf;
1946 int error;
1947
1948 #ifdef DEBUG_GETDENTS
1949 printk("[%s:%d] ngetdents64(%d, %p, %d) ", current->comm,
1950 current->pid, fd, dirent, cnt);
1951 #endif
1952 error = -EBADF;
1953 if (!(file = fget(fd)))
1954 goto out;
1955
1956 error = -EFAULT;
1957 if (!access_ok(VERIFY_WRITE, dirent, cnt) ||
1958 !access_ok(VERIFY_WRITE, eob, sizeof(*eob)))
1959 goto out_f;
1960
1961 error = -EINVAL;
1962 if (cnt < (sizeof(struct irix_dirent64) + 255))
1963 goto out_f;
1964
1965 *eob = 0;
1966 buf.curr = (struct irix_dirent64 __user *) dirent;
1967 buf.previous = NULL;
1968 buf.count = cnt;
1969 buf.error = 0;
1970 error = vfs_readdir(file, irix_filldir64, &buf);
1971 if (error < 0)
1972 goto out_f;
1973 lastdirent = buf.previous;
1974 if (!lastdirent) {
1975 error = buf.error;
1976 goto out_f;
1977 }
1978 if (put_user(file->f_pos, &lastdirent->d_off))
1979 return -EFAULT;
1980 #ifdef DEBUG_GETDENTS
1981 printk("eob=%d returning %d\n", *eob, cnt - buf.count);
1982 #endif
1983 error = cnt - buf.count;
1984
1985 out_f:
1986 fput(file);
1987 out:
1988 return error;
1989 }
1990
1991 asmlinkage int irix_uadmin(unsigned long op, unsigned long func, unsigned long arg)
1992 {
1993 int retval;
1994
1995 switch (op) {
1996 case 1:
1997 /* Reboot */
1998 printk("[%s:%d] irix_uadmin: Wants to reboot...\n",
1999 current->comm, current->pid);
2000 retval = -EINVAL;
2001 goto out;
2002
2003 case 2:
2004 /* Shutdown */
2005 printk("[%s:%d] irix_uadmin: Wants to shutdown...\n",
2006 current->comm, current->pid);
2007 retval = -EINVAL;
2008 goto out;
2009
2010 case 4:
2011 /* Remount-root */
2012 printk("[%s:%d] irix_uadmin: Wants to remount root...\n",
2013 current->comm, current->pid);
2014 retval = -EINVAL;
2015 goto out;
2016
2017 case 8:
2018 /* Kill all tasks. */
2019 printk("[%s:%d] irix_uadmin: Wants to kill all tasks...\n",
2020 current->comm, current->pid);
2021 retval = -EINVAL;
2022 goto out;
2023
2024 case 256:
2025 /* Set magic mushrooms... */
2026 printk("[%s:%d] irix_uadmin: Wants to set magic mushroom[%d]...\n",
2027 current->comm, current->pid, (int) func);
2028 retval = -EINVAL;
2029 goto out;
2030
2031 default:
2032 printk("[%s:%d] irix_uadmin: Unknown operation [%d]...\n",
2033 current->comm, current->pid, (int) op);
2034 retval = -EINVAL;
2035 goto out;
2036 };
2037
2038 out:
2039 return retval;
2040 }
2041
2042 asmlinkage int irix_utssys(char __user *inbuf, int arg, int type, char __user *outbuf)
2043 {
2044 int retval;
2045
2046 switch(type) {
2047 case 0:
2048 /* uname() */
2049 retval = irix_uname((struct iuname __user *)inbuf);
2050 goto out;
2051
2052 case 2:
2053 /* ustat() */
2054 printk("[%s:%d] irix_utssys: Wants to do ustat()\n",
2055 current->comm, current->pid);
2056 retval = -EINVAL;
2057 goto out;
2058
2059 case 3:
2060 /* fusers() */
2061 printk("[%s:%d] irix_utssys: Wants to do fusers()\n",
2062 current->comm, current->pid);
2063 retval = -EINVAL;
2064 goto out;
2065
2066 default:
2067 printk("[%s:%d] irix_utssys: Wants to do unknown type[%d]\n",
2068 current->comm, current->pid, (int) type);
2069 retval = -EINVAL;
2070 goto out;
2071 }
2072
2073 out:
2074 return retval;
2075 }
2076
2077 #undef DEBUG_FCNTL
2078
2079 #define IRIX_F_ALLOCSP 10
2080
2081 asmlinkage int irix_fcntl(int fd, int cmd, int arg)
2082 {
2083 int retval;
2084
2085 #ifdef DEBUG_FCNTL
2086 printk("[%s:%d] irix_fcntl(%d, %d, %d) ", current->comm,
2087 current->pid, fd, cmd, arg);
2088 #endif
2089 if (cmd == IRIX_F_ALLOCSP){
2090 return 0;
2091 }
2092 retval = sys_fcntl(fd, cmd, arg);
2093 #ifdef DEBUG_FCNTL
2094 printk("%d\n", retval);
2095 #endif
2096 return retval;
2097 }
2098
2099 asmlinkage int irix_ulimit(int cmd, int arg)
2100 {
2101 int retval;
2102
2103 switch(cmd) {
2104 case 1:
2105 printk("[%s:%d] irix_ulimit: Wants to get file size limit.\n",
2106 current->comm, current->pid);
2107 retval = -EINVAL;
2108 goto out;
2109
2110 case 2:
2111 printk("[%s:%d] irix_ulimit: Wants to set file size limit.\n",
2112 current->comm, current->pid);
2113 retval = -EINVAL;
2114 goto out;
2115
2116 case 3:
2117 printk("[%s:%d] irix_ulimit: Wants to get brk limit.\n",
2118 current->comm, current->pid);
2119 retval = -EINVAL;
2120 goto out;
2121
2122 case 4:
2123 #if 0
2124 printk("[%s:%d] irix_ulimit: Wants to get fd limit.\n",
2125 current->comm, current->pid);
2126 retval = -EINVAL;
2127 goto out;
2128 #endif
2129 retval = current->signal->rlim[RLIMIT_NOFILE].rlim_cur;
2130 goto out;
2131
2132 case 5:
2133 printk("[%s:%d] irix_ulimit: Wants to get txt offset.\n",
2134 current->comm, current->pid);
2135 retval = -EINVAL;
2136 goto out;
2137
2138 default:
2139 printk("[%s:%d] irix_ulimit: Unknown command [%d].\n",
2140 current->comm, current->pid, cmd);
2141 retval = -EINVAL;
2142 goto out;
2143 }
2144 out:
2145 return retval;
2146 }
2147
2148 asmlinkage int irix_unimp(struct pt_regs *regs)
2149 {
2150 printk("irix_unimp [%s:%d] v0=%d v1=%d a0=%08lx a1=%08lx a2=%08lx "
2151 "a3=%08lx\n", current->comm, current->pid,
2152 (int) regs->regs[2], (int) regs->regs[3],
2153 regs->regs[4], regs->regs[5], regs->regs[6], regs->regs[7]);
2154
2155 return -ENOSYS;
2156 }
Linux kernel - Deliverables
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