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Merge master.kernel.org:/home/rmk/linux-2.6-drvmodel
[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/highuid.h>
12 #include <linux/pagemap.h>
13 #include <linux/mm.h>
14 #include <linux/mman.h>
15 #include <linux/slab.h>
16 #include <linux/swap.h>
17 #include <linux/errno.h>
18 #include <linux/time.h>
19 #include <linux/timex.h>
20 #include <linux/times.h>
21 #include <linux/elf.h>
22 #include <linux/msg.h>
23 #include <linux/shm.h>
24 #include <linux/smp.h>
25 #include <linux/smp_lock.h>
26 #include <linux/utsname.h>
27 #include <linux/file.h>
28 #include <linux/vfs.h>
29 #include <linux/namei.h>
30 #include <linux/socket.h>
31 #include <linux/security.h>
32 #include <linux/syscalls.h>
33
34 #include <asm/ptrace.h>
35 #include <asm/page.h>
36 #include <asm/uaccess.h>
37 #include <asm/inventory.h>
38
39 /* 2,191 lines of complete and utter shit coming up... */
40
41 extern int max_threads;
42
43 /* The sysmp commands supported thus far. */
44 #define MP_NPROCS 1 /* # processor in complex */
45 #define MP_NAPROCS 2 /* # active processors in complex */
46 #define MP_PGSIZE 14 /* Return system page size in v1. */
47
48 asmlinkage int irix_sysmp(struct pt_regs *regs)
49 {
50 unsigned long cmd;
51 int base = 0;
52 int error = 0;
53
54 if(regs->regs[2] == 1000)
55 base = 1;
56 cmd = regs->regs[base + 4];
57 switch(cmd) {
58 case MP_PGSIZE:
59 error = PAGE_SIZE;
60 break;
61 case MP_NPROCS:
62 case MP_NAPROCS:
63 error = num_online_cpus();
64 break;
65 default:
66 printk("SYSMP[%s:%d]: Unsupported opcode %d\n",
67 current->comm, current->pid, (int)cmd);
68 error = -EINVAL;
69 break;
70 }
71
72 return error;
73 }
74
75 /* The prctl commands. */
76 #define PR_MAXPROCS 1 /* Tasks/user. */
77 #define PR_ISBLOCKED 2 /* If blocked, return 1. */
78 #define PR_SETSTACKSIZE 3 /* Set largest task stack size. */
79 #define PR_GETSTACKSIZE 4 /* Get largest task stack size. */
80 #define PR_MAXPPROCS 5 /* Num parallel tasks. */
81 #define PR_UNBLKONEXEC 6 /* When task exec/exit's, unblock. */
82 #define PR_SETEXITSIG 8 /* When task exit's, set signal. */
83 #define PR_RESIDENT 9 /* Make task unswappable. */
84 #define PR_ATTACHADDR 10 /* (Re-)Connect a vma to a task. */
85 #define PR_DETACHADDR 11 /* Disconnect a vma from a task. */
86 #define PR_TERMCHILD 12 /* Kill child if the parent dies. */
87 #define PR_GETSHMASK 13 /* Get the sproc() share mask. */
88 #define PR_GETNSHARE 14 /* Number of share group members. */
89 #define PR_COREPID 15 /* Add task pid to name when it core. */
90 #define PR_ATTACHADDRPERM 16 /* (Re-)Connect vma, with specified prot. */
91 #define PR_PTHREADEXIT 17 /* Kill a pthread, only for IRIX 6.[234] */
92
93 asmlinkage int irix_prctl(unsigned option, ...)
94 {
95 va_list args;
96 int error = 0;
97
98 va_start(args, option);
99 switch (option) {
100 case PR_MAXPROCS:
101 printk("irix_prctl[%s:%d]: Wants PR_MAXPROCS\n",
102 current->comm, current->pid);
103 error = max_threads;
104 break;
105
106 case PR_ISBLOCKED: {
107 struct task_struct *task;
108
109 printk("irix_prctl[%s:%d]: Wants PR_ISBLOCKED\n",
110 current->comm, current->pid);
111 read_lock(&tasklist_lock);
112 task = find_task_by_pid(va_arg(args, pid_t));
113 error = -ESRCH;
114 if (error)
115 error = (task->run_list.next != NULL);
116 read_unlock(&tasklist_lock);
117 /* Can _your_ OS find this out that fast? */
118 break;
119 }
120
121 case PR_SETSTACKSIZE: {
122 long value = va_arg(args, long);
123
124 printk("irix_prctl[%s:%d]: Wants PR_SETSTACKSIZE<%08lx>\n",
125 current->comm, current->pid, (unsigned long) value);
126 if (value > RLIM_INFINITY)
127 value = RLIM_INFINITY;
128 if (capable(CAP_SYS_ADMIN)) {
129 task_lock(current->group_leader);
130 current->signal->rlim[RLIMIT_STACK].rlim_max =
131 current->signal->rlim[RLIMIT_STACK].rlim_cur = value;
132 task_unlock(current->group_leader);
133 error = value;
134 break;
135 }
136 task_lock(current->group_leader);
137 if (value > current->signal->rlim[RLIMIT_STACK].rlim_max) {
138 error = -EINVAL;
139 task_unlock(current->group_leader);
140 break;
141 }
142 current->signal->rlim[RLIMIT_STACK].rlim_cur = value;
143 task_unlock(current->group_leader);
144 error = value;
145 break;
146 }
147
148 case PR_GETSTACKSIZE:
149 printk("irix_prctl[%s:%d]: Wants PR_GETSTACKSIZE\n",
150 current->comm, current->pid);
151 error = current->signal->rlim[RLIMIT_STACK].rlim_cur;
152 break;
153
154 case PR_MAXPPROCS:
155 printk("irix_prctl[%s:%d]: Wants PR_MAXPROCS\n",
156 current->comm, current->pid);
157 error = 1;
158 break;
159
160 case PR_UNBLKONEXEC:
161 printk("irix_prctl[%s:%d]: Wants PR_UNBLKONEXEC\n",
162 current->comm, current->pid);
163 error = -EINVAL;
164 break;
165
166 case PR_SETEXITSIG:
167 printk("irix_prctl[%s:%d]: Wants PR_SETEXITSIG\n",
168 current->comm, current->pid);
169
170 /* We can probably play some game where we set the task
171 * exit_code to some non-zero value when this is requested,
172 * and check whether exit_code is already set in do_exit().
173 */
174 error = -EINVAL;
175 break;
176
177 case PR_RESIDENT:
178 printk("irix_prctl[%s:%d]: Wants PR_RESIDENT\n",
179 current->comm, current->pid);
180 error = 0; /* Compatibility indeed. */
181 break;
182
183 case PR_ATTACHADDR:
184 printk("irix_prctl[%s:%d]: Wants PR_ATTACHADDR\n",
185 current->comm, current->pid);
186 error = -EINVAL;
187 break;
188
189 case PR_DETACHADDR:
190 printk("irix_prctl[%s:%d]: Wants PR_DETACHADDR\n",
191 current->comm, current->pid);
192 error = -EINVAL;
193 break;
194
195 case PR_TERMCHILD:
196 printk("irix_prctl[%s:%d]: Wants PR_TERMCHILD\n",
197 current->comm, current->pid);
198 error = -EINVAL;
199 break;
200
201 case PR_GETSHMASK:
202 printk("irix_prctl[%s:%d]: Wants PR_GETSHMASK\n",
203 current->comm, current->pid);
204 error = -EINVAL; /* Until I have the sproc() stuff in. */
205 break;
206
207 case PR_GETNSHARE:
208 error = 0; /* Until I have the sproc() stuff in. */
209 break;
210
211 case PR_COREPID:
212 printk("irix_prctl[%s:%d]: Wants PR_COREPID\n",
213 current->comm, current->pid);
214 error = -EINVAL;
215 break;
216
217 case PR_ATTACHADDRPERM:
218 printk("irix_prctl[%s:%d]: Wants PR_ATTACHADDRPERM\n",
219 current->comm, current->pid);
220 error = -EINVAL;
221 break;
222
223 default:
224 printk("irix_prctl[%s:%d]: Non-existant opcode %d\n",
225 current->comm, current->pid, option);
226 error = -EINVAL;
227 break;
228 }
229 va_end(args);
230
231 return error;
232 }
233
234 #undef DEBUG_PROCGRPS
235
236 extern unsigned long irix_mapelf(int fd, struct elf_phdr __user *user_phdrp, int cnt);
237 extern int getrusage(struct task_struct *p, int who, struct rusage __user *ru);
238 extern char *prom_getenv(char *name);
239 extern long prom_setenv(char *name, char *value);
240
241 /* The syssgi commands supported thus far. */
242 #define SGI_SYSID 1 /* Return unique per-machine identifier. */
243 #define SGI_INVENT 5 /* Fetch inventory */
244 # define SGI_INV_SIZEOF 1
245 # define SGI_INV_READ 2
246 #define SGI_RDNAME 6 /* Return string name of a process. */
247 #define SGI_SETNVRAM 8 /* Set PROM variable. */
248 #define SGI_GETNVRAM 9 /* Get PROM variable. */
249 #define SGI_SETPGID 21 /* Set process group id. */
250 #define SGI_SYSCONF 22 /* POSIX sysconf garbage. */
251 #define SGI_PATHCONF 24 /* POSIX sysconf garbage. */
252 #define SGI_SETGROUPS 40 /* POSIX sysconf garbage. */
253 #define SGI_GETGROUPS 41 /* POSIX sysconf garbage. */
254 #define SGI_RUSAGE 56 /* BSD style rusage(). */
255 #define SGI_SSYNC 62 /* Synchronous fs sync. */
256 #define SGI_GETSID 65 /* SysVr4 get session id. */
257 #define SGI_ELFMAP 68 /* Map an elf image. */
258 #define SGI_TOSSTSAVE 108 /* Toss saved vma's. */
259 #define SGI_FP_BCOPY 129 /* Should FPU bcopy be used on this machine? */
260 #define SGI_PHYSP 1011 /* Translate virtual into physical page. */
261
262 asmlinkage int irix_syssgi(struct pt_regs *regs)
263 {
264 unsigned long cmd;
265 int retval, base = 0;
266
267 if (regs->regs[2] == 1000)
268 base = 1;
269
270 cmd = regs->regs[base + 4];
271 switch(cmd) {
272 case SGI_SYSID: {
273 char __user *buf = (char __user *) regs->regs[base + 5];
274
275 /* XXX Use ethernet addr.... */
276 retval = clear_user(buf, 64) ? -EFAULT : 0;
277 break;
278 }
279 #if 0
280 case SGI_RDNAME: {
281 int pid = (int) regs->regs[base + 5];
282 char __user *buf = (char __user *) regs->regs[base + 6];
283 struct task_struct *p;
284 char tcomm[sizeof(current->comm)];
285
286 read_lock(&tasklist_lock);
287 p = find_task_by_pid(pid);
288 if (!p) {
289 read_unlock(&tasklist_lock);
290 retval = -ESRCH;
291 break;
292 }
293 get_task_comm(tcomm, p);
294 read_unlock(&tasklist_lock);
295
296 /* XXX Need to check sizes. */
297 retval = copy_to_user(buf, tcomm, sizeof(tcomm)) ? -EFAULT : 0;
298 break;
299 }
300
301 case SGI_GETNVRAM: {
302 char __user *name = (char __user *) regs->regs[base+5];
303 char __user *buf = (char __user *) regs->regs[base+6];
304 char *value;
305 return -EINVAL; /* til I fix it */
306 value = prom_getenv(name); /* PROM lock? */
307 if (!value) {
308 retval = -EINVAL;
309 break;
310 }
311 /* Do I strlen() for the length? */
312 retval = copy_to_user(buf, value, 128) ? -EFAULT : 0;
313 break;
314 }
315
316 case SGI_SETNVRAM: {
317 char __user *name = (char __user *) regs->regs[base+5];
318 char __user *value = (char __user *) regs->regs[base+6];
319 return -EINVAL; /* til I fix it */
320 retval = prom_setenv(name, value);
321 /* XXX make sure retval conforms to syssgi(2) */
322 printk("[%s:%d] setnvram(\"%s\", \"%s\"): retval %d",
323 current->comm, current->pid, name, value, retval);
324 /* if (retval == PROM_ENOENT)
325 retval = -ENOENT; */
326 break;
327 }
328 #endif
329
330 case SGI_SETPGID: {
331 #ifdef DEBUG_PROCGRPS
332 printk("[%s:%d] setpgid(%d, %d) ",
333 current->comm, current->pid,
334 (int) regs->regs[base + 5], (int)regs->regs[base + 6]);
335 #endif
336 retval = sys_setpgid(regs->regs[base + 5], regs->regs[base + 6]);
337
338 #ifdef DEBUG_PROCGRPS
339 printk("retval=%d\n", retval);
340 #endif
341 }
342
343 case SGI_SYSCONF: {
344 switch(regs->regs[base + 5]) {
345 case 1:
346 retval = (MAX_ARG_PAGES >> 4); /* XXX estimate... */
347 goto out;
348 case 2:
349 retval = max_threads;
350 goto out;
351 case 3:
352 retval = HZ;
353 goto out;
354 case 4:
355 retval = NGROUPS_MAX;
356 goto out;
357 case 5:
358 retval = NR_OPEN;
359 goto out;
360 case 6:
361 retval = 1;
362 goto out;
363 case 7:
364 retval = 1;
365 goto out;
366 case 8:
367 retval = 199009;
368 goto out;
369 case 11:
370 retval = PAGE_SIZE;
371 goto out;
372 case 12:
373 retval = 4;
374 goto out;
375 case 25:
376 case 26:
377 case 27:
378 case 28:
379 case 29:
380 case 30:
381 retval = 0;
382 goto out;
383 case 31:
384 retval = 32;
385 goto out;
386 default:
387 retval = -EINVAL;
388 goto out;
389 };
390 }
391
392 case SGI_SETGROUPS:
393 retval = sys_setgroups((int) regs->regs[base + 5],
394 (gid_t __user *) regs->regs[base + 6]);
395 break;
396
397 case SGI_GETGROUPS:
398 retval = sys_getgroups((int) regs->regs[base + 5],
399 (gid_t __user *) regs->regs[base + 6]);
400 break;
401
402 case SGI_RUSAGE: {
403 struct rusage __user *ru = (struct rusage __user *) regs->regs[base + 6];
404
405 switch((int) regs->regs[base + 5]) {
406 case 0:
407 /* rusage self */
408 retval = getrusage(current, RUSAGE_SELF, ru);
409 goto out;
410
411 case -1:
412 /* rusage children */
413 retval = getrusage(current, RUSAGE_CHILDREN, ru);
414 goto out;
415
416 default:
417 retval = -EINVAL;
418 goto out;
419 };
420 }
421
422 case SGI_SSYNC:
423 sys_sync();
424 retval = 0;
425 break;
426
427 case SGI_GETSID:
428 #ifdef DEBUG_PROCGRPS
429 printk("[%s:%d] getsid(%d) ", current->comm, current->pid,
430 (int) regs->regs[base + 5]);
431 #endif
432 retval = sys_getsid(regs->regs[base + 5]);
433 #ifdef DEBUG_PROCGRPS
434 printk("retval=%d\n", retval);
435 #endif
436 break;
437
438 case SGI_ELFMAP:
439 retval = irix_mapelf((int) regs->regs[base + 5],
440 (struct elf_phdr __user *) regs->regs[base + 6],
441 (int) regs->regs[base + 7]);
442 break;
443
444 case SGI_TOSSTSAVE:
445 /* XXX We don't need to do anything? */
446 retval = 0;
447 break;
448
449 case SGI_FP_BCOPY:
450 retval = 0;
451 break;
452
453 case SGI_PHYSP: {
454 unsigned long addr = regs->regs[base + 5];
455 int __user *pageno = (int __user *) (regs->regs[base + 6]);
456 struct mm_struct *mm = current->mm;
457 pgd_t *pgdp;
458 pud_t *pudp;
459 pmd_t *pmdp;
460 pte_t *ptep;
461
462 down_read(&mm->mmap_sem);
463 pgdp = pgd_offset(mm, addr);
464 pudp = pud_offset(pgdp, addr);
465 pmdp = pmd_offset(pudp, addr);
466 ptep = pte_offset(pmdp, addr);
467 retval = -EINVAL;
468 if (ptep) {
469 pte_t pte = *ptep;
470
471 if (pte_val(pte) & (_PAGE_VALID | _PAGE_PRESENT)) {
472 /* b0rked on 64-bit */
473 retval = put_user((pte_val(pte) & PAGE_MASK) >>
474 PAGE_SHIFT, pageno);
475 }
476 }
477 up_read(&mm->mmap_sem);
478 break;
479 }
480
481 case SGI_INVENT: {
482 int arg1 = (int) regs->regs [base + 5];
483 void __user *buffer = (void __user *) regs->regs [base + 6];
484 int count = (int) regs->regs [base + 7];
485
486 switch (arg1) {
487 case SGI_INV_SIZEOF:
488 retval = sizeof (inventory_t);
489 break;
490 case SGI_INV_READ:
491 retval = dump_inventory_to_user (buffer, count);
492 break;
493 default:
494 retval = -EINVAL;
495 }
496 break;
497 }
498
499 default:
500 printk("irix_syssgi: Unsupported command %d\n", (int)cmd);
501 retval = -EINVAL;
502 break;
503 };
504
505 out:
506 return retval;
507 }
508
509 asmlinkage int irix_gtime(struct pt_regs *regs)
510 {
511 return get_seconds();
512 }
513
514 /*
515 * IRIX is completely broken... it returns 0 on success, otherwise
516 * ENOMEM.
517 */
518 asmlinkage int irix_brk(unsigned long brk)
519 {
520 unsigned long rlim;
521 unsigned long newbrk, oldbrk;
522 struct mm_struct *mm = current->mm;
523 int ret;
524
525 down_write(&mm->mmap_sem);
526 if (brk < mm->end_code) {
527 ret = -ENOMEM;
528 goto out;
529 }
530
531 newbrk = PAGE_ALIGN(brk);
532 oldbrk = PAGE_ALIGN(mm->brk);
533 if (oldbrk == newbrk) {
534 mm->brk = brk;
535 ret = 0;
536 goto out;
537 }
538
539 /*
540 * Always allow shrinking brk
541 */
542 if (brk <= mm->brk) {
543 mm->brk = brk;
544 do_munmap(mm, newbrk, oldbrk-newbrk);
545 ret = 0;
546 goto out;
547 }
548 /*
549 * Check against rlimit and stack..
550 */
551 rlim = current->signal->rlim[RLIMIT_DATA].rlim_cur;
552 if (rlim >= RLIM_INFINITY)
553 rlim = ~0;
554 if (brk - mm->end_code > rlim) {
555 ret = -ENOMEM;
556 goto out;
557 }
558
559 /*
560 * Check against existing mmap mappings.
561 */
562 if (find_vma_intersection(mm, oldbrk, newbrk+PAGE_SIZE)) {
563 ret = -ENOMEM;
564 goto out;
565 }
566
567 /*
568 * Ok, looks good - let it rip.
569 */
570 if (do_brk(oldbrk, newbrk-oldbrk) != oldbrk) {
571 ret = -ENOMEM;
572 goto out;
573 }
574 mm->brk = brk;
575 ret = 0;
576
577 out:
578 up_write(&mm->mmap_sem);
579 return ret;
580 }
581
582 asmlinkage int irix_getpid(struct pt_regs *regs)
583 {
584 regs->regs[3] = current->real_parent->pid;
585 return current->pid;
586 }
587
588 asmlinkage int irix_getuid(struct pt_regs *regs)
589 {
590 regs->regs[3] = current->euid;
591 return current->uid;
592 }
593
594 asmlinkage int irix_getgid(struct pt_regs *regs)
595 {
596 regs->regs[3] = current->egid;
597 return current->gid;
598 }
599
600 asmlinkage int irix_stime(int value)
601 {
602 int err;
603 struct timespec tv;
604
605 tv.tv_sec = value;
606 tv.tv_nsec = 0;
607 err = security_settime(&tv, NULL);
608 if (err)
609 return err;
610
611 write_seqlock_irq(&xtime_lock);
612 xtime.tv_sec = value;
613 xtime.tv_nsec = 0;
614 ntp_clear();
615 write_sequnlock_irq(&xtime_lock);
616
617 return 0;
618 }
619
620 static inline void jiffiestotv(unsigned long jiffies, struct timeval *value)
621 {
622 value->tv_usec = (jiffies % HZ) * (1000000 / HZ);
623 value->tv_sec = jiffies / HZ;
624 }
625
626 static inline void getitimer_real(struct itimerval *value)
627 {
628 register unsigned long val, interval;
629
630 interval = current->it_real_incr;
631 val = 0;
632 if (del_timer(&current->real_timer)) {
633 unsigned long now = jiffies;
634 val = current->real_timer.expires;
635 add_timer(&current->real_timer);
636 /* look out for negative/zero itimer.. */
637 if (val <= now)
638 val = now+1;
639 val -= now;
640 }
641 jiffiestotv(val, &value->it_value);
642 jiffiestotv(interval, &value->it_interval);
643 }
644
645 asmlinkage unsigned int irix_alarm(unsigned int seconds)
646 {
647 struct itimerval it_new, it_old;
648 unsigned int oldalarm;
649
650 if (!seconds) {
651 getitimer_real(&it_old);
652 del_timer(&current->real_timer);
653 } else {
654 it_new.it_interval.tv_sec = it_new.it_interval.tv_usec = 0;
655 it_new.it_value.tv_sec = seconds;
656 it_new.it_value.tv_usec = 0;
657 do_setitimer(ITIMER_REAL, &it_new, &it_old);
658 }
659 oldalarm = it_old.it_value.tv_sec;
660 /*
661 * ehhh.. We can't return 0 if we have an alarm pending ...
662 * And we'd better return too much than too little anyway
663 */
664 if (it_old.it_value.tv_usec)
665 oldalarm++;
666
667 return oldalarm;
668 }
669
670 asmlinkage int irix_pause(void)
671 {
672 current->state = TASK_INTERRUPTIBLE;
673 schedule();
674
675 return -EINTR;
676 }
677
678 /* XXX need more than this... */
679 asmlinkage int irix_mount(char __user *dev_name, char __user *dir_name,
680 unsigned long flags, char __user *type, void __user *data, int datalen)
681 {
682 printk("[%s:%d] irix_mount(%p,%p,%08lx,%p,%p,%d)\n",
683 current->comm, current->pid,
684 dev_name, dir_name, flags, type, data, datalen);
685
686 return sys_mount(dev_name, dir_name, type, flags, data);
687 }
688
689 struct irix_statfs {
690 short f_type;
691 long f_bsize, f_frsize, f_blocks, f_bfree, f_files, f_ffree;
692 char f_fname[6], f_fpack[6];
693 };
694
695 asmlinkage int irix_statfs(const char __user *path,
696 struct irix_statfs __user *buf, int len, int fs_type)
697 {
698 struct nameidata nd;
699 struct kstatfs kbuf;
700 int error, i;
701
702 /* We don't support this feature yet. */
703 if (fs_type) {
704 error = -EINVAL;
705 goto out;
706 }
707 if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statfs))) {
708 error = -EFAULT;
709 goto out;
710 }
711
712 error = user_path_walk(path, &nd);
713 if (error)
714 goto out;
715
716 error = vfs_statfs(nd.dentry->d_inode->i_sb, &kbuf);
717 if (error)
718 goto dput_and_out;
719
720 error = __put_user(kbuf.f_type, &buf->f_type);
721 error |= __put_user(kbuf.f_bsize, &buf->f_bsize);
722 error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
723 error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
724 error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
725 error |= __put_user(kbuf.f_files, &buf->f_files);
726 error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
727 for (i = 0; i < 6; i++) {
728 error |= __put_user(0, &buf->f_fname[i]);
729 error |= __put_user(0, &buf->f_fpack[i]);
730 }
731
732 dput_and_out:
733 path_release(&nd);
734 out:
735 return error;
736 }
737
738 asmlinkage int irix_fstatfs(unsigned int fd, struct irix_statfs __user *buf)
739 {
740 struct kstatfs kbuf;
741 struct file *file;
742 int error, i;
743
744 if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statfs))) {
745 error = -EFAULT;
746 goto out;
747 }
748
749 if (!(file = fget(fd))) {
750 error = -EBADF;
751 goto out;
752 }
753
754 error = vfs_statfs(file->f_dentry->d_inode->i_sb, &kbuf);
755 if (error)
756 goto out_f;
757
758 error = __put_user(kbuf.f_type, &buf->f_type);
759 error |= __put_user(kbuf.f_bsize, &buf->f_bsize);
760 error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
761 error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
762 error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
763 error |= __put_user(kbuf.f_files, &buf->f_files);
764 error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
765
766 for (i = 0; i < 6; i++) {
767 error |= __put_user(0, &buf->f_fname[i]);
768 error |= __put_user(0, &buf->f_fpack[i]);
769 }
770
771 out_f:
772 fput(file);
773 out:
774 return error;
775 }
776
777 asmlinkage int irix_setpgrp(int flags)
778 {
779 int error;
780
781 #ifdef DEBUG_PROCGRPS
782 printk("[%s:%d] setpgrp(%d) ", current->comm, current->pid, flags);
783 #endif
784 if(!flags)
785 error = process_group(current);
786 else
787 error = sys_setsid();
788 #ifdef DEBUG_PROCGRPS
789 printk("returning %d\n", process_group(current));
790 #endif
791
792 return error;
793 }
794
795 asmlinkage int irix_times(struct tms __user *tbuf)
796 {
797 int err = 0;
798
799 if (tbuf) {
800 if (!access_ok(VERIFY_WRITE,tbuf,sizeof *tbuf))
801 return -EFAULT;
802
803 err = __put_user(current->utime, &tbuf->tms_utime);
804 err |= __put_user(current->stime, &tbuf->tms_stime);
805 err |= __put_user(current->signal->cutime, &tbuf->tms_cutime);
806 err |= __put_user(current->signal->cstime, &tbuf->tms_cstime);
807 }
808
809 return err;
810 }
811
812 asmlinkage int irix_exec(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
824 error = do_execve(filename, (char __user * __user *) (long)regs->regs[base + 5],
825 NULL, regs);
826 putname(filename);
827
828 return error;
829 }
830
831 asmlinkage int irix_exece(struct pt_regs *regs)
832 {
833 int error, base = 0;
834 char *filename;
835
836 if (regs->regs[2] == 1000)
837 base = 1;
838 filename = getname((char __user *) (long)regs->regs[base + 4]);
839 error = PTR_ERR(filename);
840 if (IS_ERR(filename))
841 return error;
842 error = do_execve(filename, (char __user * __user *) (long)regs->regs[base + 5],
843 (char __user * __user *) (long)regs->regs[base + 6], regs);
844 putname(filename);
845
846 return error;
847 }
848
849 asmlinkage unsigned long irix_gethostid(void)
850 {
851 printk("[%s:%d]: irix_gethostid() called...\n",
852 current->comm, current->pid);
853
854 return -EINVAL;
855 }
856
857 asmlinkage unsigned long irix_sethostid(unsigned long val)
858 {
859 printk("[%s:%d]: irix_sethostid(%08lx) called...\n",
860 current->comm, current->pid, val);
861
862 return -EINVAL;
863 }
864
865 asmlinkage int irix_socket(int family, int type, int protocol)
866 {
867 switch(type) {
868 case 1:
869 type = SOCK_DGRAM;
870 break;
871
872 case 2:
873 type = SOCK_STREAM;
874 break;
875
876 case 3:
877 type = 9; /* Invalid... */
878 break;
879
880 case 4:
881 type = SOCK_RAW;
882 break;
883
884 case 5:
885 type = SOCK_RDM;
886 break;
887
888 case 6:
889 type = SOCK_SEQPACKET;
890 break;
891
892 default:
893 break;
894 }
895
896 return sys_socket(family, type, protocol);
897 }
898
899 asmlinkage int irix_getdomainname(char __user *name, int len)
900 {
901 int err;
902
903 down_read(&uts_sem);
904 if (len > __NEW_UTS_LEN)
905 len = __NEW_UTS_LEN;
906 err = copy_to_user(name, system_utsname.domainname, len) ? -EFAULT : 0;
907 up_read(&uts_sem);
908
909 return err;
910 }
911
912 asmlinkage unsigned long irix_getpagesize(void)
913 {
914 return PAGE_SIZE;
915 }
916
917 asmlinkage int irix_msgsys(int opcode, unsigned long arg0, unsigned long arg1,
918 unsigned long arg2, unsigned long arg3,
919 unsigned long arg4)
920 {
921 switch (opcode) {
922 case 0:
923 return sys_msgget((key_t) arg0, (int) arg1);
924 case 1:
925 return sys_msgctl((int) arg0, (int) arg1,
926 (struct msqid_ds __user *)arg2);
927 case 2:
928 return sys_msgrcv((int) arg0, (struct msgbuf __user *) arg1,
929 (size_t) arg2, (long) arg3, (int) arg4);
930 case 3:
931 return sys_msgsnd((int) arg0, (struct msgbuf __user *) arg1,
932 (size_t) arg2, (int) arg3);
933 default:
934 return -EINVAL;
935 }
936 }
937
938 asmlinkage int irix_shmsys(int opcode, unsigned long arg0, unsigned long arg1,
939 unsigned long arg2, unsigned long arg3)
940 {
941 switch (opcode) {
942 case 0:
943 return do_shmat((int) arg0, (char __user *) arg1, (int) arg2,
944 (unsigned long *) arg3);
945 case 1:
946 return sys_shmctl((int)arg0, (int)arg1,
947 (struct shmid_ds __user *)arg2);
948 case 2:
949 return sys_shmdt((char __user *)arg0);
950 case 3:
951 return sys_shmget((key_t) arg0, (int) arg1, (int) arg2);
952 default:
953 return -EINVAL;
954 }
955 }
956
957 asmlinkage int irix_semsys(int opcode, unsigned long arg0, unsigned long arg1,
958 unsigned long arg2, int arg3)
959 {
960 switch (opcode) {
961 case 0:
962 return sys_semctl((int) arg0, (int) arg1, (int) arg2,
963 (union semun) arg3);
964 case 1:
965 return sys_semget((key_t) arg0, (int) arg1, (int) arg2);
966 case 2:
967 return sys_semop((int) arg0, (struct sembuf __user *)arg1,
968 (unsigned int) arg2);
969 default:
970 return -EINVAL;
971 }
972 }
973
974 static inline loff_t llseek(struct file *file, loff_t offset, int origin)
975 {
976 loff_t (*fn)(struct file *, loff_t, int);
977 loff_t retval;
978
979 fn = default_llseek;
980 if (file->f_op && file->f_op->llseek)
981 fn = file->f_op->llseek;
982 lock_kernel();
983 retval = fn(file, offset, origin);
984 unlock_kernel();
985
986 return retval;
987 }
988
989 asmlinkage int irix_lseek64(int fd, int _unused, int offhi, int offlow,
990 int origin)
991 {
992 struct file * file;
993 loff_t offset;
994 int retval;
995
996 retval = -EBADF;
997 file = fget(fd);
998 if (!file)
999 goto bad;
1000 retval = -EINVAL;
1001 if (origin > 2)
1002 goto out_putf;
1003
1004 offset = llseek(file, ((loff_t) offhi << 32) | offlow, origin);
1005 retval = (int) offset;
1006
1007 out_putf:
1008 fput(file);
1009 bad:
1010 return retval;
1011 }
1012
1013 asmlinkage int irix_sginap(int ticks)
1014 {
1015 schedule_timeout_interruptible(ticks);
1016 return 0;
1017 }
1018
1019 asmlinkage int irix_sgikopt(char __user *istring, char __user *ostring, int len)
1020 {
1021 return -EINVAL;
1022 }
1023
1024 asmlinkage int irix_gettimeofday(struct timeval __user *tv)
1025 {
1026 time_t sec;
1027 long nsec, seq;
1028 int err;
1029
1030 if (!access_ok(VERIFY_WRITE, tv, sizeof(struct timeval)))
1031 return -EFAULT;
1032
1033 do {
1034 seq = read_seqbegin(&xtime_lock);
1035 sec = xtime.tv_sec;
1036 nsec = xtime.tv_nsec;
1037 } while (read_seqretry(&xtime_lock, seq));
1038
1039 err = __put_user(sec, &tv->tv_sec);
1040 err |= __put_user((nsec / 1000), &tv->tv_usec);
1041
1042 return err;
1043 }
1044
1045 #define IRIX_MAP_AUTOGROW 0x40
1046
1047 asmlinkage unsigned long irix_mmap32(unsigned long addr, size_t len, int prot,
1048 int flags, int fd, off_t offset)
1049 {
1050 struct file *file = NULL;
1051 unsigned long retval;
1052
1053 if (!(flags & MAP_ANONYMOUS)) {
1054 if (!(file = fget(fd)))
1055 return -EBADF;
1056
1057 /* Ok, bad taste hack follows, try to think in something else
1058 * when reading this. */
1059 if (flags & IRIX_MAP_AUTOGROW) {
1060 unsigned long old_pos;
1061 long max_size = offset + len;
1062
1063 if (max_size > file->f_dentry->d_inode->i_size) {
1064 old_pos = sys_lseek (fd, max_size - 1, 0);
1065 sys_write (fd, (void __user *) "", 1);
1066 sys_lseek (fd, old_pos, 0);
1067 }
1068 }
1069 }
1070
1071 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
1072
1073 down_write(&current->mm->mmap_sem);
1074 retval = do_mmap(file, addr, len, prot, flags, offset);
1075 up_write(&current->mm->mmap_sem);
1076 if (file)
1077 fput(file);
1078
1079 return retval;
1080 }
1081
1082 asmlinkage int irix_madvise(unsigned long addr, int len, int behavior)
1083 {
1084 printk("[%s:%d] Wheee.. irix_madvise(%08lx,%d,%d)\n",
1085 current->comm, current->pid, addr, len, behavior);
1086
1087 return -EINVAL;
1088 }
1089
1090 asmlinkage int irix_pagelock(char __user *addr, int len, int op)
1091 {
1092 printk("[%s:%d] Wheee.. irix_pagelock(%p,%d,%d)\n",
1093 current->comm, current->pid, addr, len, op);
1094
1095 return -EINVAL;
1096 }
1097
1098 asmlinkage int irix_quotactl(struct pt_regs *regs)
1099 {
1100 printk("[%s:%d] Wheee.. irix_quotactl()\n",
1101 current->comm, current->pid);
1102
1103 return -EINVAL;
1104 }
1105
1106 asmlinkage int irix_BSDsetpgrp(int pid, int pgrp)
1107 {
1108 int error;
1109
1110 #ifdef DEBUG_PROCGRPS
1111 printk("[%s:%d] BSDsetpgrp(%d, %d) ", current->comm, current->pid,
1112 pid, pgrp);
1113 #endif
1114 if(!pid)
1115 pid = current->pid;
1116
1117 /* Wheee, weird sysv thing... */
1118 if ((pgrp == 0) && (pid == current->pid))
1119 error = sys_setsid();
1120 else
1121 error = sys_setpgid(pid, pgrp);
1122
1123 #ifdef DEBUG_PROCGRPS
1124 printk("error = %d\n", error);
1125 #endif
1126
1127 return error;
1128 }
1129
1130 asmlinkage int irix_systeminfo(int cmd, char __user *buf, int cnt)
1131 {
1132 printk("[%s:%d] Wheee.. irix_systeminfo(%d,%p,%d)\n",
1133 current->comm, current->pid, cmd, buf, cnt);
1134
1135 return -EINVAL;
1136 }
1137
1138 struct iuname {
1139 char sysname[257], nodename[257], release[257];
1140 char version[257], machine[257];
1141 char m_type[257], base_rel[257];
1142 char _unused0[257], _unused1[257], _unused2[257];
1143 char _unused3[257], _unused4[257], _unused5[257];
1144 };
1145
1146 asmlinkage int irix_uname(struct iuname __user *buf)
1147 {
1148 down_read(&uts_sem);
1149 if (copy_from_user(system_utsname.sysname, buf->sysname, 65)
1150 || copy_from_user(system_utsname.nodename, buf->nodename, 65)
1151 || copy_from_user(system_utsname.release, buf->release, 65)
1152 || copy_from_user(system_utsname.version, buf->version, 65)
1153 || copy_from_user(system_utsname.machine, buf->machine, 65)) {
1154 return -EFAULT;
1155 }
1156 up_read(&uts_sem);
1157
1158 return 1;
1159 }
1160
1161 #undef DEBUG_XSTAT
1162
1163 static int irix_xstat32_xlate(struct kstat *stat, void __user *ubuf)
1164 {
1165 struct xstat32 {
1166 u32 st_dev, st_pad1[3], st_ino, st_mode, st_nlink, st_uid, st_gid;
1167 u32 st_rdev, st_pad2[2], st_size, st_pad3;
1168 u32 st_atime0, st_atime1;
1169 u32 st_mtime0, st_mtime1;
1170 u32 st_ctime0, st_ctime1;
1171 u32 st_blksize, st_blocks;
1172 char st_fstype[16];
1173 u32 st_pad4[8];
1174 } ub;
1175
1176 if (!sysv_valid_dev(stat->dev) || !sysv_valid_dev(stat->rdev))
1177 return -EOVERFLOW;
1178 ub.st_dev = sysv_encode_dev(stat->dev);
1179 ub.st_ino = stat->ino;
1180 ub.st_mode = stat->mode;
1181 ub.st_nlink = stat->nlink;
1182 SET_UID(ub.st_uid, stat->uid);
1183 SET_GID(ub.st_gid, stat->gid);
1184 ub.st_rdev = sysv_encode_dev(stat->rdev);
1185 #if BITS_PER_LONG == 32
1186 if (stat->size > MAX_NON_LFS)
1187 return -EOVERFLOW;
1188 #endif
1189 ub.st_size = stat->size;
1190 ub.st_atime0 = stat->atime.tv_sec;
1191 ub.st_atime1 = stat->atime.tv_nsec;
1192 ub.st_mtime0 = stat->mtime.tv_sec;
1193 ub.st_mtime1 = stat->atime.tv_nsec;
1194 ub.st_ctime0 = stat->ctime.tv_sec;
1195 ub.st_ctime1 = stat->atime.tv_nsec;
1196 ub.st_blksize = stat->blksize;
1197 ub.st_blocks = stat->blocks;
1198 strcpy (ub.st_fstype, "efs");
1199
1200 return copy_to_user(ubuf, &ub, sizeof(ub)) ? -EFAULT : 0;
1201 }
1202
1203 static int irix_xstat64_xlate(struct kstat *stat, void __user *ubuf)
1204 {
1205 struct xstat64 {
1206 u32 st_dev; s32 st_pad1[3];
1207 unsigned long long st_ino;
1208 u32 st_mode;
1209 u32 st_nlink; s32 st_uid; s32 st_gid; u32 st_rdev;
1210 s32 st_pad2[2];
1211 long long st_size;
1212 s32 st_pad3;
1213 struct { s32 tv_sec, tv_nsec; } st_atime, st_mtime, st_ctime;
1214 s32 st_blksize;
1215 long long st_blocks;
1216 char st_fstype[16];
1217 s32 st_pad4[8];
1218 } ks;
1219
1220 if (!sysv_valid_dev(stat->dev) || !sysv_valid_dev(stat->rdev))
1221 return -EOVERFLOW;
1222
1223 ks.st_dev = sysv_encode_dev(stat->dev);
1224 ks.st_pad1[0] = ks.st_pad1[1] = ks.st_pad1[2] = 0;
1225 ks.st_ino = (unsigned long long) stat->ino;
1226 ks.st_mode = (u32) stat->mode;
1227 ks.st_nlink = (u32) stat->nlink;
1228 ks.st_uid = (s32) stat->uid;
1229 ks.st_gid = (s32) stat->gid;
1230 ks.st_rdev = sysv_encode_dev (stat->rdev);
1231 ks.st_pad2[0] = ks.st_pad2[1] = 0;
1232 ks.st_size = (long long) stat->size;
1233 ks.st_pad3 = 0;
1234
1235 /* XXX hackety hack... */
1236 ks.st_atime.tv_sec = (s32) stat->atime.tv_sec;
1237 ks.st_atime.tv_nsec = stat->atime.tv_nsec;
1238 ks.st_mtime.tv_sec = (s32) stat->mtime.tv_sec;
1239 ks.st_mtime.tv_nsec = stat->mtime.tv_nsec;
1240 ks.st_ctime.tv_sec = (s32) stat->ctime.tv_sec;
1241 ks.st_ctime.tv_nsec = stat->ctime.tv_nsec;
1242
1243 ks.st_blksize = (s32) stat->blksize;
1244 ks.st_blocks = (long long) stat->blocks;
1245 memset(ks.st_fstype, 0, 16);
1246 ks.st_pad4[0] = ks.st_pad4[1] = ks.st_pad4[2] = ks.st_pad4[3] = 0;
1247 ks.st_pad4[4] = ks.st_pad4[5] = ks.st_pad4[6] = ks.st_pad4[7] = 0;
1248
1249 /* Now write it all back. */
1250 return copy_to_user(ubuf, &ks, sizeof(ks)) ? -EFAULT : 0;
1251 }
1252
1253 asmlinkage int irix_xstat(int version, char __user *filename, struct stat __user *statbuf)
1254 {
1255 int retval;
1256 struct kstat stat;
1257
1258 #ifdef DEBUG_XSTAT
1259 printk("[%s:%d] Wheee.. irix_xstat(%d,%s,%p) ",
1260 current->comm, current->pid, version, filename, statbuf);
1261 #endif
1262
1263 retval = vfs_stat(filename, &stat);
1264 if (!retval) {
1265 switch(version) {
1266 case 2:
1267 retval = irix_xstat32_xlate(&stat, statbuf);
1268 break;
1269 case 3:
1270 retval = irix_xstat64_xlate(&stat, statbuf);
1271 break;
1272 default:
1273 retval = -EINVAL;
1274 }
1275 }
1276 return retval;
1277 }
1278
1279 asmlinkage int irix_lxstat(int version, char __user *filename, struct stat __user *statbuf)
1280 {
1281 int error;
1282 struct kstat stat;
1283
1284 #ifdef DEBUG_XSTAT
1285 printk("[%s:%d] Wheee.. irix_lxstat(%d,%s,%p) ",
1286 current->comm, current->pid, version, filename, statbuf);
1287 #endif
1288
1289 error = vfs_lstat(filename, &stat);
1290
1291 if (!error) {
1292 switch (version) {
1293 case 2:
1294 error = irix_xstat32_xlate(&stat, statbuf);
1295 break;
1296 case 3:
1297 error = irix_xstat64_xlate(&stat, statbuf);
1298 break;
1299 default:
1300 error = -EINVAL;
1301 }
1302 }
1303 return error;
1304 }
1305
1306 asmlinkage int irix_fxstat(int version, int fd, struct stat __user *statbuf)
1307 {
1308 int error;
1309 struct kstat stat;
1310
1311 #ifdef DEBUG_XSTAT
1312 printk("[%s:%d] Wheee.. irix_fxstat(%d,%d,%p) ",
1313 current->comm, current->pid, version, fd, statbuf);
1314 #endif
1315
1316 error = vfs_fstat(fd, &stat);
1317 if (!error) {
1318 switch (version) {
1319 case 2:
1320 error = irix_xstat32_xlate(&stat, statbuf);
1321 break;
1322 case 3:
1323 error = irix_xstat64_xlate(&stat, statbuf);
1324 break;
1325 default:
1326 error = -EINVAL;
1327 }
1328 }
1329 return error;
1330 }
1331
1332 asmlinkage int irix_xmknod(int ver, char __user *filename, int mode, unsigned dev)
1333 {
1334 int retval;
1335 printk("[%s:%d] Wheee.. irix_xmknod(%d,%s,%x,%x)\n",
1336 current->comm, current->pid, ver, filename, mode, dev);
1337
1338 switch(ver) {
1339 case 2:
1340 /* shouldn't we convert here as well as on stat()? */
1341 retval = sys_mknod(filename, mode, dev);
1342 break;
1343
1344 default:
1345 retval = -EINVAL;
1346 break;
1347 };
1348
1349 return retval;
1350 }
1351
1352 asmlinkage int irix_swapctl(int cmd, char __user *arg)
1353 {
1354 printk("[%s:%d] Wheee.. irix_swapctl(%d,%p)\n",
1355 current->comm, current->pid, cmd, arg);
1356
1357 return -EINVAL;
1358 }
1359
1360 struct irix_statvfs {
1361 u32 f_bsize; u32 f_frsize; u32 f_blocks;
1362 u32 f_bfree; u32 f_bavail; u32 f_files; u32 f_ffree; u32 f_favail;
1363 u32 f_fsid; char f_basetype[16];
1364 u32 f_flag; u32 f_namemax;
1365 char f_fstr[32]; u32 f_filler[16];
1366 };
1367
1368 asmlinkage int irix_statvfs(char __user *fname, struct irix_statvfs __user *buf)
1369 {
1370 struct nameidata nd;
1371 struct kstatfs kbuf;
1372 int error, i;
1373
1374 printk("[%s:%d] Wheee.. irix_statvfs(%s,%p)\n",
1375 current->comm, current->pid, fname, buf);
1376 if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs)))
1377 return -EFAULT;
1378
1379 error = user_path_walk(fname, &nd);
1380 if (error)
1381 goto out;
1382 error = vfs_statfs(nd.dentry->d_inode->i_sb, &kbuf);
1383 if (error)
1384 goto dput_and_out;
1385
1386 error |= __put_user(kbuf.f_bsize, &buf->f_bsize);
1387 error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
1388 error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
1389 error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
1390 error |= __put_user(kbuf.f_bfree, &buf->f_bavail); /* XXX hackety hack... */
1391 error |= __put_user(kbuf.f_files, &buf->f_files);
1392 error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
1393 error |= __put_user(kbuf.f_ffree, &buf->f_favail); /* XXX hackety hack... */
1394 #ifdef __MIPSEB__
1395 error |= __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
1396 #else
1397 error |= __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
1398 #endif
1399 for (i = 0; i < 16; i++)
1400 error |= __put_user(0, &buf->f_basetype[i]);
1401 error |= __put_user(0, &buf->f_flag);
1402 error |= __put_user(kbuf.f_namelen, &buf->f_namemax);
1403 for (i = 0; i < 32; i++)
1404 error |= __put_user(0, &buf->f_fstr[i]);
1405
1406 dput_and_out:
1407 path_release(&nd);
1408 out:
1409 return error;
1410 }
1411
1412 asmlinkage int irix_fstatvfs(int fd, struct irix_statvfs __user *buf)
1413 {
1414 struct kstatfs kbuf;
1415 struct file *file;
1416 int error, i;
1417
1418 printk("[%s:%d] Wheee.. irix_fstatvfs(%d,%p)\n",
1419 current->comm, current->pid, fd, buf);
1420
1421 if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs)))
1422 return -EFAULT;
1423
1424 if (!(file = fget(fd))) {
1425 error = -EBADF;
1426 goto out;
1427 }
1428 error = vfs_statfs(file->f_dentry->d_inode->i_sb, &kbuf);
1429 if (error)
1430 goto out_f;
1431
1432 error = __put_user(kbuf.f_bsize, &buf->f_bsize);
1433 error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
1434 error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
1435 error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
1436 error |= __put_user(kbuf.f_bfree, &buf->f_bavail); /* XXX hackety hack... */
1437 error |= __put_user(kbuf.f_files, &buf->f_files);
1438 error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
1439 error |= __put_user(kbuf.f_ffree, &buf->f_favail); /* XXX hackety hack... */
1440 #ifdef __MIPSEB__
1441 error |= __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
1442 #else
1443 error |= __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
1444 #endif
1445 for(i = 0; i < 16; i++)
1446 error |= __put_user(0, &buf->f_basetype[i]);
1447 error |= __put_user(0, &buf->f_flag);
1448 error |= __put_user(kbuf.f_namelen, &buf->f_namemax);
1449 error |= __clear_user(&buf->f_fstr, sizeof(buf->f_fstr)) ? -EFAULT : 0;
1450
1451 out_f:
1452 fput(file);
1453 out:
1454 return error;
1455 }
1456
1457 asmlinkage int irix_priocntl(struct pt_regs *regs)
1458 {
1459 printk("[%s:%d] Wheee.. irix_priocntl()\n",
1460 current->comm, current->pid);
1461
1462 return -EINVAL;
1463 }
1464
1465 asmlinkage int irix_sigqueue(int pid, int sig, int code, int val)
1466 {
1467 printk("[%s:%d] Wheee.. irix_sigqueue(%d,%d,%d,%d)\n",
1468 current->comm, current->pid, pid, sig, code, val);
1469
1470 return -EINVAL;
1471 }
1472
1473 asmlinkage int irix_truncate64(char __user *name, int pad, int size1, int size2)
1474 {
1475 int retval;
1476
1477 if (size1) {
1478 retval = -EINVAL;
1479 goto out;
1480 }
1481 retval = sys_truncate(name, size2);
1482
1483 out:
1484 return retval;
1485 }
1486
1487 asmlinkage int irix_ftruncate64(int fd, int pad, int size1, int size2)
1488 {
1489 int retval;
1490
1491 if (size1) {
1492 retval = -EINVAL;
1493 goto out;
1494 }
1495 retval = sys_ftruncate(fd, size2);
1496
1497 out:
1498 return retval;
1499 }
1500
1501 asmlinkage int irix_mmap64(struct pt_regs *regs)
1502 {
1503 int len, prot, flags, fd, off1, off2, error, base = 0;
1504 unsigned long addr, pgoff, *sp;
1505 struct file *file = NULL;
1506 int err;
1507
1508 if (regs->regs[2] == 1000)
1509 base = 1;
1510 sp = (unsigned long *) (regs->regs[29] + 16);
1511 addr = regs->regs[base + 4];
1512 len = regs->regs[base + 5];
1513 prot = regs->regs[base + 6];
1514 if (!base) {
1515 flags = regs->regs[base + 7];
1516 if (!access_ok(VERIFY_READ, sp, (4 * sizeof(unsigned long))))
1517 return -EFAULT;
1518 fd = sp[0];
1519 err = __get_user(off1, &sp[1]);
1520 err |= __get_user(off2, &sp[2]);
1521 } else {
1522 if (!access_ok(VERIFY_READ, sp, (5 * sizeof(unsigned long))))
1523 return -EFAULT;
1524 err = __get_user(flags, &sp[0]);
1525 err |= __get_user(fd, &sp[1]);
1526 err |= __get_user(off1, &sp[2]);
1527 err |= __get_user(off2, &sp[3]);
1528 }
1529
1530 if (err)
1531 return err;
1532
1533 if (off1 & PAGE_MASK)
1534 return -EOVERFLOW;
1535
1536 pgoff = (off1 << (32 - PAGE_SHIFT)) | (off2 >> PAGE_SHIFT);
1537
1538 if (!(flags & MAP_ANONYMOUS)) {
1539 if (!(file = fget(fd)))
1540 return -EBADF;
1541
1542 /* Ok, bad taste hack follows, try to think in something else
1543 when reading this */
1544 if (flags & IRIX_MAP_AUTOGROW) {
1545 unsigned long old_pos;
1546 long max_size = off2 + len;
1547
1548 if (max_size > file->f_dentry->d_inode->i_size) {
1549 old_pos = sys_lseek (fd, max_size - 1, 0);
1550 sys_write (fd, (void __user *) "", 1);
1551 sys_lseek (fd, old_pos, 0);
1552 }
1553 }
1554 }
1555
1556 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
1557
1558 down_write(&current->mm->mmap_sem);
1559 error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
1560 up_write(&current->mm->mmap_sem);
1561
1562 if (file)
1563 fput(file);
1564
1565 return error;
1566 }
1567
1568 asmlinkage int irix_dmi(struct pt_regs *regs)
1569 {
1570 printk("[%s:%d] Wheee.. irix_dmi()\n",
1571 current->comm, current->pid);
1572
1573 return -EINVAL;
1574 }
1575
1576 asmlinkage int irix_pread(int fd, char __user *buf, int cnt, int off64,
1577 int off1, int off2)
1578 {
1579 printk("[%s:%d] Wheee.. irix_pread(%d,%p,%d,%d,%d,%d)\n",
1580 current->comm, current->pid, fd, buf, cnt, off64, off1, off2);
1581
1582 return -EINVAL;
1583 }
1584
1585 asmlinkage int irix_pwrite(int fd, char __user *buf, int cnt, int off64,
1586 int off1, int off2)
1587 {
1588 printk("[%s:%d] Wheee.. irix_pwrite(%d,%p,%d,%d,%d,%d)\n",
1589 current->comm, current->pid, fd, buf, cnt, off64, off1, off2);
1590
1591 return -EINVAL;
1592 }
1593
1594 asmlinkage int irix_sgifastpath(int cmd, unsigned long arg0, unsigned long arg1,
1595 unsigned long arg2, unsigned long arg3,
1596 unsigned long arg4, unsigned long arg5)
1597 {
1598 printk("[%s:%d] Wheee.. irix_fastpath(%d,%08lx,%08lx,%08lx,%08lx,"
1599 "%08lx,%08lx)\n",
1600 current->comm, current->pid, cmd, arg0, arg1, arg2,
1601 arg3, arg4, arg5);
1602
1603 return -EINVAL;
1604 }
1605
1606 struct irix_statvfs64 {
1607 u32 f_bsize; u32 f_frsize;
1608 u64 f_blocks; u64 f_bfree; u64 f_bavail;
1609 u64 f_files; u64 f_ffree; u64 f_favail;
1610 u32 f_fsid;
1611 char f_basetype[16];
1612 u32 f_flag; u32 f_namemax;
1613 char f_fstr[32];
1614 u32 f_filler[16];
1615 };
1616
1617 asmlinkage int irix_statvfs64(char __user *fname, struct irix_statvfs64 __user *buf)
1618 {
1619 struct nameidata nd;
1620 struct kstatfs kbuf;
1621 int error, i;
1622
1623 printk("[%s:%d] Wheee.. irix_statvfs64(%s,%p)\n",
1624 current->comm, current->pid, fname, buf);
1625 if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs64))) {
1626 error = -EFAULT;
1627 goto out;
1628 }
1629
1630 error = user_path_walk(fname, &nd);
1631 if (error)
1632 goto out;
1633 error = vfs_statfs(nd.dentry->d_inode->i_sb, &kbuf);
1634 if (error)
1635 goto dput_and_out;
1636
1637 error = __put_user(kbuf.f_bsize, &buf->f_bsize);
1638 error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
1639 error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
1640 error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
1641 error |= __put_user(kbuf.f_bfree, &buf->f_bavail); /* XXX hackety hack... */
1642 error |= __put_user(kbuf.f_files, &buf->f_files);
1643 error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
1644 error |= __put_user(kbuf.f_ffree, &buf->f_favail); /* XXX hackety hack... */
1645 #ifdef __MIPSEB__
1646 error |= __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
1647 #else
1648 error |= __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
1649 #endif
1650 for(i = 0; i < 16; i++)
1651 error |= __put_user(0, &buf->f_basetype[i]);
1652 error |= __put_user(0, &buf->f_flag);
1653 error |= __put_user(kbuf.f_namelen, &buf->f_namemax);
1654 for(i = 0; i < 32; i++)
1655 error |= __put_user(0, &buf->f_fstr[i]);
1656
1657 dput_and_out:
1658 path_release(&nd);
1659 out:
1660 return error;
1661 }
1662
1663 asmlinkage int irix_fstatvfs64(int fd, struct irix_statvfs __user *buf)
1664 {
1665 struct kstatfs kbuf;
1666 struct file *file;
1667 int error, i;
1668
1669 printk("[%s:%d] Wheee.. irix_fstatvfs64(%d,%p)\n",
1670 current->comm, current->pid, fd, buf);
1671
1672 if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs))) {
1673 error = -EFAULT;
1674 goto out;
1675 }
1676 if (!(file = fget(fd))) {
1677 error = -EBADF;
1678 goto out;
1679 }
1680 error = vfs_statfs(file->f_dentry->d_inode->i_sb, &kbuf);
1681 if (error)
1682 goto out_f;
1683
1684 error = __put_user(kbuf.f_bsize, &buf->f_bsize);
1685 error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
1686 error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
1687 error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
1688 error |= __put_user(kbuf.f_bfree, &buf->f_bavail); /* XXX hackety hack... */
1689 error |= __put_user(kbuf.f_files, &buf->f_files);
1690 error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
1691 error |= __put_user(kbuf.f_ffree, &buf->f_favail); /* XXX hackety hack... */
1692 #ifdef __MIPSEB__
1693 error |= __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
1694 #else
1695 error |= __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
1696 #endif
1697 for(i = 0; i < 16; i++)
1698 error |= __put_user(0, &buf->f_basetype[i]);
1699 error |= __put_user(0, &buf->f_flag);
1700 error |= __put_user(kbuf.f_namelen, &buf->f_namemax);
1701 error |= __clear_user(buf->f_fstr, sizeof(buf->f_fstr[i])) ? -EFAULT : 0;
1702
1703 out_f:
1704 fput(file);
1705 out:
1706 return error;
1707 }
1708
1709 asmlinkage int irix_getmountid(char __user *fname, unsigned long __user *midbuf)
1710 {
1711 int err;
1712
1713 printk("[%s:%d] irix_getmountid(%s, %p)\n",
1714 current->comm, current->pid, fname, midbuf);
1715 if (!access_ok(VERIFY_WRITE, midbuf, (sizeof(unsigned long) * 4)))
1716 return -EFAULT;
1717
1718 /*
1719 * The idea with this system call is that when trying to determine
1720 * 'pwd' and it's a toss-up for some reason, userland can use the
1721 * fsid of the filesystem to try and make the right decision, but
1722 * we don't have this so for now. XXX
1723 */
1724 err = __put_user(0, &midbuf[0]);
1725 err |= __put_user(0, &midbuf[1]);
1726 err |= __put_user(0, &midbuf[2]);
1727 err |= __put_user(0, &midbuf[3]);
1728
1729 return err;
1730 }
1731
1732 asmlinkage int irix_nsproc(unsigned long entry, unsigned long mask,
1733 unsigned long arg, unsigned long sp, int slen)
1734 {
1735 printk("[%s:%d] Wheee.. irix_nsproc(%08lx,%08lx,%08lx,%08lx,%d)\n",
1736 current->comm, current->pid, entry, mask, arg, sp, slen);
1737
1738 return -EINVAL;
1739 }
1740
1741 #undef DEBUG_GETDENTS
1742
1743 struct irix_dirent32 {
1744 u32 d_ino;
1745 u32 d_off;
1746 unsigned short d_reclen;
1747 char d_name[1];
1748 };
1749
1750 struct irix_dirent32_callback {
1751 struct irix_dirent32 __user *current_dir;
1752 struct irix_dirent32 __user *previous;
1753 int count;
1754 int error;
1755 };
1756
1757 #define NAME_OFFSET32(de) ((int) ((de)->d_name - (char *) (de)))
1758 #define ROUND_UP32(x) (((x)+sizeof(u32)-1) & ~(sizeof(u32)-1))
1759
1760 static int irix_filldir32(void *__buf, const char *name,
1761 int namlen, loff_t offset, ino_t ino, unsigned int d_type)
1762 {
1763 struct irix_dirent32 __user *dirent;
1764 struct irix_dirent32_callback *buf = __buf;
1765 unsigned short reclen = ROUND_UP32(NAME_OFFSET32(dirent) + namlen + 1);
1766 int err = 0;
1767
1768 #ifdef DEBUG_GETDENTS
1769 printk("\nirix_filldir32[reclen<%d>namlen<%d>count<%d>]",
1770 reclen, namlen, buf->count);
1771 #endif
1772 buf->error = -EINVAL; /* only used if we fail.. */
1773 if (reclen > buf->count)
1774 return -EINVAL;
1775 dirent = buf->previous;
1776 if (dirent)
1777 err = __put_user(offset, &dirent->d_off);
1778 dirent = buf->current_dir;
1779 err |= __put_user(dirent, &buf->previous);
1780 err |= __put_user(ino, &dirent->d_ino);
1781 err |= __put_user(reclen, &dirent->d_reclen);
1782 err |= copy_to_user((char __user *)dirent->d_name, name, namlen) ? -EFAULT : 0;
1783 err |= __put_user(0, &dirent->d_name[namlen]);
1784 dirent = (struct irix_dirent32 __user *) ((char __user *) dirent + reclen);
1785
1786 buf->current_dir = dirent;
1787 buf->count -= reclen;
1788
1789 return err;
1790 }
1791
1792 asmlinkage int irix_ngetdents(unsigned int fd, void __user * dirent,
1793 unsigned int count, int __user *eob)
1794 {
1795 struct file *file;
1796 struct irix_dirent32 __user *lastdirent;
1797 struct irix_dirent32_callback buf;
1798 int error;
1799
1800 #ifdef DEBUG_GETDENTS
1801 printk("[%s:%d] ngetdents(%d, %p, %d, %p) ", current->comm,
1802 current->pid, fd, dirent, count, eob);
1803 #endif
1804 error = -EBADF;
1805 file = fget(fd);
1806 if (!file)
1807 goto out;
1808
1809 buf.current_dir = (struct irix_dirent32 __user *) dirent;
1810 buf.previous = NULL;
1811 buf.count = count;
1812 buf.error = 0;
1813
1814 error = vfs_readdir(file, irix_filldir32, &buf);
1815 if (error < 0)
1816 goto out_putf;
1817
1818 error = buf.error;
1819 lastdirent = buf.previous;
1820 if (lastdirent) {
1821 put_user(file->f_pos, &lastdirent->d_off);
1822 error = count - buf.count;
1823 }
1824
1825 if (put_user(0, eob) < 0) {
1826 error = -EFAULT;
1827 goto out_putf;
1828 }
1829
1830 #ifdef DEBUG_GETDENTS
1831 printk("eob=%d returning %d\n", *eob, count - buf.count);
1832 #endif
1833 error = count - buf.count;
1834
1835 out_putf:
1836 fput(file);
1837 out:
1838 return error;
1839 }
1840
1841 struct irix_dirent64 {
1842 u64 d_ino;
1843 u64 d_off;
1844 unsigned short d_reclen;
1845 char d_name[1];
1846 };
1847
1848 struct irix_dirent64_callback {
1849 struct irix_dirent64 __user *curr;
1850 struct irix_dirent64 __user *previous;
1851 int count;
1852 int error;
1853 };
1854
1855 #define NAME_OFFSET64(de) ((int) ((de)->d_name - (char *) (de)))
1856 #define ROUND_UP64(x) (((x)+sizeof(u64)-1) & ~(sizeof(u64)-1))
1857
1858 static int irix_filldir64(void *__buf, const char *name,
1859 int namlen, loff_t offset, ino_t ino, unsigned int d_type)
1860 {
1861 struct irix_dirent64 __user *dirent;
1862 struct irix_dirent64_callback * buf = __buf;
1863 unsigned short reclen = ROUND_UP64(NAME_OFFSET64(dirent) + namlen + 1);
1864 int err = 0;
1865
1866 if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf)))
1867 return -EFAULT;
1868
1869 if (__put_user(-EINVAL, &buf->error)) /* only used if we fail.. */
1870 return -EFAULT;
1871 if (reclen > buf->count)
1872 return -EINVAL;
1873 dirent = buf->previous;
1874 if (dirent)
1875 err = __put_user(offset, &dirent->d_off);
1876 dirent = buf->curr;
1877 buf->previous = dirent;
1878 err |= __put_user(ino, &dirent->d_ino);
1879 err |= __put_user(reclen, &dirent->d_reclen);
1880 err |= __copy_to_user((char __user *)dirent->d_name, name, namlen)
1881 ? -EFAULT : 0;
1882 err |= __put_user(0, &dirent->d_name[namlen]);
1883
1884 dirent = (struct irix_dirent64 __user *) ((char __user *) dirent + reclen);
1885
1886 buf->curr = dirent;
1887 buf->count -= reclen;
1888
1889 return err;
1890 }
1891
1892 asmlinkage int irix_getdents64(int fd, void __user *dirent, int cnt)
1893 {
1894 struct file *file;
1895 struct irix_dirent64 __user *lastdirent;
1896 struct irix_dirent64_callback buf;
1897 int error;
1898
1899 #ifdef DEBUG_GETDENTS
1900 printk("[%s:%d] getdents64(%d, %p, %d) ", current->comm,
1901 current->pid, fd, dirent, cnt);
1902 #endif
1903 error = -EBADF;
1904 if (!(file = fget(fd)))
1905 goto out;
1906
1907 error = -EFAULT;
1908 if (!access_ok(VERIFY_WRITE, dirent, cnt))
1909 goto out_f;
1910
1911 error = -EINVAL;
1912 if (cnt < (sizeof(struct irix_dirent64) + 255))
1913 goto out_f;
1914
1915 buf.curr = (struct irix_dirent64 __user *) dirent;
1916 buf.previous = NULL;
1917 buf.count = cnt;
1918 buf.error = 0;
1919 error = vfs_readdir(file, irix_filldir64, &buf);
1920 if (error < 0)
1921 goto out_f;
1922 lastdirent = buf.previous;
1923 if (!lastdirent) {
1924 error = buf.error;
1925 goto out_f;
1926 }
1927 if (put_user(file->f_pos, &lastdirent->d_off))
1928 return -EFAULT;
1929 #ifdef DEBUG_GETDENTS
1930 printk("returning %d\n", cnt - buf.count);
1931 #endif
1932 error = cnt - buf.count;
1933
1934 out_f:
1935 fput(file);
1936 out:
1937 return error;
1938 }
1939
1940 asmlinkage int irix_ngetdents64(int fd, void __user *dirent, int cnt, int *eob)
1941 {
1942 struct file *file;
1943 struct irix_dirent64 __user *lastdirent;
1944 struct irix_dirent64_callback buf;
1945 int error;
1946
1947 #ifdef DEBUG_GETDENTS
1948 printk("[%s:%d] ngetdents64(%d, %p, %d) ", current->comm,
1949 current->pid, fd, dirent, cnt);
1950 #endif
1951 error = -EBADF;
1952 if (!(file = fget(fd)))
1953 goto out;
1954
1955 error = -EFAULT;
1956 if (!access_ok(VERIFY_WRITE, dirent, cnt) ||
1957 !access_ok(VERIFY_WRITE, eob, sizeof(*eob)))
1958 goto out_f;
1959
1960 error = -EINVAL;
1961 if (cnt < (sizeof(struct irix_dirent64) + 255))
1962 goto out_f;
1963
1964 *eob = 0;
1965 buf.curr = (struct irix_dirent64 __user *) dirent;
1966 buf.previous = NULL;
1967 buf.count = cnt;
1968 buf.error = 0;
1969 error = vfs_readdir(file, irix_filldir64, &buf);
1970 if (error < 0)
1971 goto out_f;
1972 lastdirent = buf.previous;
1973 if (!lastdirent) {
1974 error = buf.error;
1975 goto out_f;
1976 }
1977 if (put_user(file->f_pos, &lastdirent->d_off))
1978 return -EFAULT;
1979 #ifdef DEBUG_GETDENTS
1980 printk("eob=%d returning %d\n", *eob, cnt - buf.count);
1981 #endif
1982 error = cnt - buf.count;
1983
1984 out_f:
1985 fput(file);
1986 out:
1987 return error;
1988 }
1989
1990 asmlinkage int irix_uadmin(unsigned long op, unsigned long func, unsigned long arg)
1991 {
1992 int retval;
1993
1994 switch (op) {
1995 case 1:
1996 /* Reboot */
1997 printk("[%s:%d] irix_uadmin: Wants to reboot...\n",
1998 current->comm, current->pid);
1999 retval = -EINVAL;
2000 goto out;
2001
2002 case 2:
2003 /* Shutdown */
2004 printk("[%s:%d] irix_uadmin: Wants to shutdown...\n",
2005 current->comm, current->pid);
2006 retval = -EINVAL;
2007 goto out;
2008
2009 case 4:
2010 /* Remount-root */
2011 printk("[%s:%d] irix_uadmin: Wants to remount root...\n",
2012 current->comm, current->pid);
2013 retval = -EINVAL;
2014 goto out;
2015
2016 case 8:
2017 /* Kill all tasks. */
2018 printk("[%s:%d] irix_uadmin: Wants to kill all tasks...\n",
2019 current->comm, current->pid);
2020 retval = -EINVAL;
2021 goto out;
2022
2023 case 256:
2024 /* Set magic mushrooms... */
2025 printk("[%s:%d] irix_uadmin: Wants to set magic mushroom[%d]...\n",
2026 current->comm, current->pid, (int) func);
2027 retval = -EINVAL;
2028 goto out;
2029
2030 default:
2031 printk("[%s:%d] irix_uadmin: Unknown operation [%d]...\n",
2032 current->comm, current->pid, (int) op);
2033 retval = -EINVAL;
2034 goto out;
2035 };
2036
2037 out:
2038 return retval;
2039 }
2040
2041 asmlinkage int irix_utssys(char __user *inbuf, int arg, int type, char __user *outbuf)
2042 {
2043 int retval;
2044
2045 switch(type) {
2046 case 0:
2047 /* uname() */
2048 retval = irix_uname((struct iuname __user *)inbuf);
2049 goto out;
2050
2051 case 2:
2052 /* ustat() */
2053 printk("[%s:%d] irix_utssys: Wants to do ustat()\n",
2054 current->comm, current->pid);
2055 retval = -EINVAL;
2056 goto out;
2057
2058 case 3:
2059 /* fusers() */
2060 printk("[%s:%d] irix_utssys: Wants to do fusers()\n",
2061 current->comm, current->pid);
2062 retval = -EINVAL;
2063 goto out;
2064
2065 default:
2066 printk("[%s:%d] irix_utssys: Wants to do unknown type[%d]\n",
2067 current->comm, current->pid, (int) type);
2068 retval = -EINVAL;
2069 goto out;
2070 }
2071
2072 out:
2073 return retval;
2074 }
2075
2076 #undef DEBUG_FCNTL
2077
2078 #define IRIX_F_ALLOCSP 10
2079
2080 asmlinkage int irix_fcntl(int fd, int cmd, int arg)
2081 {
2082 int retval;
2083
2084 #ifdef DEBUG_FCNTL
2085 printk("[%s:%d] irix_fcntl(%d, %d, %d) ", current->comm,
2086 current->pid, fd, cmd, arg);
2087 #endif
2088 if (cmd == IRIX_F_ALLOCSP){
2089 return 0;
2090 }
2091 retval = sys_fcntl(fd, cmd, arg);
2092 #ifdef DEBUG_FCNTL
2093 printk("%d\n", retval);
2094 #endif
2095 return retval;
2096 }
2097
2098 asmlinkage int irix_ulimit(int cmd, int arg)
2099 {
2100 int retval;
2101
2102 switch(cmd) {
2103 case 1:
2104 printk("[%s:%d] irix_ulimit: Wants to get file size limit.\n",
2105 current->comm, current->pid);
2106 retval = -EINVAL;
2107 goto out;
2108
2109 case 2:
2110 printk("[%s:%d] irix_ulimit: Wants to set file size limit.\n",
2111 current->comm, current->pid);
2112 retval = -EINVAL;
2113 goto out;
2114
2115 case 3:
2116 printk("[%s:%d] irix_ulimit: Wants to get brk limit.\n",
2117 current->comm, current->pid);
2118 retval = -EINVAL;
2119 goto out;
2120
2121 case 4:
2122 #if 0
2123 printk("[%s:%d] irix_ulimit: Wants to get fd limit.\n",
2124 current->comm, current->pid);
2125 retval = -EINVAL;
2126 goto out;
2127 #endif
2128 retval = current->signal->rlim[RLIMIT_NOFILE].rlim_cur;
2129 goto out;
2130
2131 case 5:
2132 printk("[%s:%d] irix_ulimit: Wants to get txt offset.\n",
2133 current->comm, current->pid);
2134 retval = -EINVAL;
2135 goto out;
2136
2137 default:
2138 printk("[%s:%d] irix_ulimit: Unknown command [%d].\n",
2139 current->comm, current->pid, cmd);
2140 retval = -EINVAL;
2141 goto out;
2142 }
2143 out:
2144 return retval;
2145 }
2146
2147 asmlinkage int irix_unimp(struct pt_regs *regs)
2148 {
2149 printk("irix_unimp [%s:%d] v0=%d v1=%d a0=%08lx a1=%08lx a2=%08lx "
2150 "a3=%08lx\n", current->comm, current->pid,
2151 (int) regs->regs[2], (int) regs->regs[3],
2152 regs->regs[4], regs->regs[5], regs->regs[6], regs->regs[7]);
2153
2154 return -ENOSYS;
2155 }
Linux kernel - Deliverables
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