1
2
3
4
5
6
7
8
9
10#include <linux/kernel.h>
11#include <linux/sched.h>
12#include <linux/capability.h>
13#include <linux/fs.h>
14#include <linux/mm.h>
15#include <linux/file.h>
16#include <linux/signal.h>
17#include <linux/resource.h>
18#include <linux/times.h>
19#include <linux/smp.h>
20#include <linux/smp_lock.h>
21#include <linux/sem.h>
22#include <linux/msg.h>
23#include <linux/shm.h>
24#include <linux/slab.h>
25#include <linux/uio.h>
26#include <linux/nfs_fs.h>
27#include <linux/quota.h>
28#include <linux/module.h>
29#include <linux/sunrpc/svc.h>
30#include <linux/nfsd/nfsd.h>
31#include <linux/nfsd/cache.h>
32#include <linux/nfsd/xdr.h>
33#include <linux/nfsd/syscall.h>
34#include <linux/poll.h>
35#include <linux/personality.h>
36#include <linux/stat.h>
37#include <linux/filter.h>
38#include <linux/highmem.h>
39#include <linux/highuid.h>
40#include <linux/mman.h>
41#include <linux/ipv6.h>
42#include <linux/in.h>
43#include <linux/icmpv6.h>
44#include <linux/syscalls.h>
45#include <linux/sysctl.h>
46#include <linux/binfmts.h>
47#include <linux/dnotify.h>
48#include <linux/security.h>
49#include <linux/compat.h>
50#include <linux/vfs.h>
51#include <linux/netfilter_ipv4/ip_tables.h>
52#include <linux/ptrace.h>
53
54#include <asm/types.h>
55#include <asm/uaccess.h>
56#include <asm/fpumacro.h>
57#include <asm/mmu_context.h>
58#include <asm/compat_signal.h>
59
60#ifdef CONFIG_SYSVIPC
61asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth)
62{
63 int version;
64
65 version = call >> 16;
66 call &= 0xffff;
67
68 switch (call) {
69 case SEMTIMEDOP:
70 if (fifth)
71
72 return compat_sys_semtimedop((int)first,
73 compat_ptr(ptr), second,
74 compat_ptr(fifth));
75
76 case SEMOP:
77
78
79 return sys_semtimedop((int)first, compat_ptr(ptr), second,
80 NULL);
81 case SEMGET:
82
83 return sys_semget((int)first, (int)second, third);
84 case SEMCTL:
85
86 return compat_sys_semctl((int)first, (int)second, third,
87 compat_ptr(ptr));
88
89 case MSGSND:
90
91 return compat_sys_msgsnd((int)first, (int)second, third,
92 compat_ptr(ptr));
93 case MSGRCV:
94
95 return compat_sys_msgrcv((int)first, second, (int)fifth,
96 third, version, compat_ptr(ptr));
97 case MSGGET:
98
99 return sys_msgget((int)first, second);
100 case MSGCTL:
101
102 return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
103
104 case SHMAT:
105
106 return compat_sys_shmat((int)first, second, third, version,
107 compat_ptr(ptr));
108 case SHMDT:
109 return sys_shmdt(compat_ptr(ptr));
110 case SHMGET:
111
112 return sys_shmget((int)first, second, third);
113 case SHMCTL:
114
115 return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
116
117 default:
118 return -ENOSYS;
119 };
120
121 return -ENOSYS;
122}
123#endif
124
125asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
126{
127 if ((int)high < 0)
128 return -EINVAL;
129 else
130 return sys_truncate(path, (high << 32) | low);
131}
132
133asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
134{
135 if ((int)high < 0)
136 return -EINVAL;
137 else
138 return sys_ftruncate(fd, (high << 32) | low);
139}
140
141static int cp_compat_stat64(struct kstat *stat,
142 struct compat_stat64 __user *statbuf)
143{
144 int err;
145
146 err = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev);
147 err |= put_user(stat->ino, &statbuf->st_ino);
148 err |= put_user(stat->mode, &statbuf->st_mode);
149 err |= put_user(stat->nlink, &statbuf->st_nlink);
150 err |= put_user(stat->uid, &statbuf->st_uid);
151 err |= put_user(stat->gid, &statbuf->st_gid);
152 err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev);
153 err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]);
154 err |= put_user(stat->size, &statbuf->st_size);
155 err |= put_user(stat->blksize, &statbuf->st_blksize);
156 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]);
157 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]);
158 err |= put_user(stat->blocks, &statbuf->st_blocks);
159 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
160 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
161 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
162 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
163 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
164 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
165 err |= put_user(0, &statbuf->__unused4);
166 err |= put_user(0, &statbuf->__unused5);
167
168 return err;
169}
170
171asmlinkage long compat_sys_stat64(char __user * filename,
172 struct compat_stat64 __user *statbuf)
173{
174 struct kstat stat;
175 int error = vfs_stat(filename, &stat);
176
177 if (!error)
178 error = cp_compat_stat64(&stat, statbuf);
179 return error;
180}
181
182asmlinkage long compat_sys_lstat64(char __user * filename,
183 struct compat_stat64 __user *statbuf)
184{
185 struct kstat stat;
186 int error = vfs_lstat(filename, &stat);
187
188 if (!error)
189 error = cp_compat_stat64(&stat, statbuf);
190 return error;
191}
192
193asmlinkage long compat_sys_fstat64(unsigned int fd,
194 struct compat_stat64 __user * statbuf)
195{
196 struct kstat stat;
197 int error = vfs_fstat(fd, &stat);
198
199 if (!error)
200 error = cp_compat_stat64(&stat, statbuf);
201 return error;
202}
203
204asmlinkage long compat_sys_fstatat64(unsigned int dfd, char __user *filename,
205 struct compat_stat64 __user * statbuf, int flag)
206{
207 struct kstat stat;
208 int error;
209
210 error = vfs_fstatat(dfd, filename, &stat, flag);
211 if (error)
212 return error;
213 return cp_compat_stat64(&stat, statbuf);
214}
215
216asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2)
217{
218 return sys_sysfs(option, arg1, arg2);
219}
220
221asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval)
222{
223 struct timespec t;
224 int ret;
225 mm_segment_t old_fs = get_fs ();
226
227 set_fs (KERNEL_DS);
228 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t);
229 set_fs (old_fs);
230 if (put_compat_timespec(&t, interval))
231 return -EFAULT;
232 return ret;
233}
234
235asmlinkage long compat_sys_rt_sigprocmask(int how,
236 compat_sigset_t __user *set,
237 compat_sigset_t __user *oset,
238 compat_size_t sigsetsize)
239{
240 sigset_t s;
241 compat_sigset_t s32;
242 int ret;
243 mm_segment_t old_fs = get_fs();
244
245 if (set) {
246 if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
247 return -EFAULT;
248 switch (_NSIG_WORDS) {
249 case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
250 case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
251 case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
252 case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
253 }
254 }
255 set_fs (KERNEL_DS);
256 ret = sys_rt_sigprocmask(how,
257 set ? (sigset_t __user *) &s : NULL,
258 oset ? (sigset_t __user *) &s : NULL,
259 sigsetsize);
260 set_fs (old_fs);
261 if (ret) return ret;
262 if (oset) {
263 switch (_NSIG_WORDS) {
264 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
265 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
266 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
267 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
268 }
269 if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
270 return -EFAULT;
271 }
272 return 0;
273}
274
275asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
276 compat_size_t sigsetsize)
277{
278 sigset_t s;
279 compat_sigset_t s32;
280 int ret;
281 mm_segment_t old_fs = get_fs();
282
283 set_fs (KERNEL_DS);
284 ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize);
285 set_fs (old_fs);
286 if (!ret) {
287 switch (_NSIG_WORDS) {
288 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
289 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
290 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
291 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
292 }
293 if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
294 return -EFAULT;
295 }
296 return ret;
297}
298
299asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig,
300 struct compat_siginfo __user *uinfo)
301{
302 siginfo_t info;
303 int ret;
304 mm_segment_t old_fs = get_fs();
305
306 if (copy_siginfo_from_user32(&info, uinfo))
307 return -EFAULT;
308
309 set_fs (KERNEL_DS);
310 ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
311 set_fs (old_fs);
312 return ret;
313}
314
315asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act,
316 struct old_sigaction32 __user *oact)
317{
318 struct k_sigaction new_ka, old_ka;
319 int ret;
320
321 WARN_ON_ONCE(sig >= 0);
322 sig = -sig;
323
324 if (act) {
325 compat_old_sigset_t mask;
326 u32 u_handler, u_restorer;
327
328 ret = get_user(u_handler, &act->sa_handler);
329 new_ka.sa.sa_handler = compat_ptr(u_handler);
330 ret |= __get_user(u_restorer, &act->sa_restorer);
331 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
332 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
333 ret |= __get_user(mask, &act->sa_mask);
334 if (ret)
335 return ret;
336 new_ka.ka_restorer = NULL;
337 siginitset(&new_ka.sa.sa_mask, mask);
338 }
339
340 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
341
342 if (!ret && oact) {
343 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
344 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
345 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
346 ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
347 }
348
349 return ret;
350}
351
352asmlinkage long compat_sys_rt_sigaction(int sig,
353 struct sigaction32 __user *act,
354 struct sigaction32 __user *oact,
355 void __user *restorer,
356 compat_size_t sigsetsize)
357{
358 struct k_sigaction new_ka, old_ka;
359 int ret;
360 compat_sigset_t set32;
361
362
363 if (sigsetsize != sizeof(compat_sigset_t))
364 return -EINVAL;
365
366 if (act) {
367 u32 u_handler, u_restorer;
368
369 new_ka.ka_restorer = restorer;
370 ret = get_user(u_handler, &act->sa_handler);
371 new_ka.sa.sa_handler = compat_ptr(u_handler);
372 ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t));
373 switch (_NSIG_WORDS) {
374 case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32);
375 case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32);
376 case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32);
377 case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32);
378 }
379 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
380 ret |= __get_user(u_restorer, &act->sa_restorer);
381 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
382 if (ret)
383 return -EFAULT;
384 }
385
386 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
387
388 if (!ret && oact) {
389 switch (_NSIG_WORDS) {
390 case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3];
391 case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2];
392 case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1];
393 case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0];
394 }
395 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
396 ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t));
397 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
398 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
399 if (ret)
400 ret = -EFAULT;
401 }
402
403 return ret;
404}
405
406
407
408
409
410asmlinkage long sparc32_execve(struct pt_regs *regs)
411{
412 int error, base = 0;
413 char *filename;
414
415
416
417
418 if ((u32)regs->u_regs[UREG_G1] == 0)
419 base = 1;
420
421 filename = getname(compat_ptr(regs->u_regs[base + UREG_I0]));
422 error = PTR_ERR(filename);
423 if (IS_ERR(filename))
424 goto out;
425
426 error = compat_do_execve(filename,
427 compat_ptr(regs->u_regs[base + UREG_I1]),
428 compat_ptr(regs->u_regs[base + UREG_I2]), regs);
429
430 putname(filename);
431
432 if (!error) {
433 fprs_write(0);
434 current_thread_info()->xfsr[0] = 0;
435 current_thread_info()->fpsaved[0] = 0;
436 regs->tstate &= ~TSTATE_PEF;
437 }
438out:
439 return error;
440}
441
442#ifdef CONFIG_MODULES
443
444asmlinkage long sys32_init_module(void __user *umod, u32 len,
445 const char __user *uargs)
446{
447 return sys_init_module(umod, len, uargs);
448}
449
450asmlinkage long sys32_delete_module(const char __user *name_user,
451 unsigned int flags)
452{
453 return sys_delete_module(name_user, flags);
454}
455
456#else
457
458asmlinkage long sys32_init_module(const char __user *name_user,
459 struct module __user *mod_user)
460{
461 return -ENOSYS;
462}
463
464asmlinkage long sys32_delete_module(const char __user *name_user)
465{
466 return -ENOSYS;
467}
468
469#endif
470
471asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
472 char __user *ubuf,
473 compat_size_t count,
474 unsigned long poshi,
475 unsigned long poslo)
476{
477 return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo);
478}
479
480asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd,
481 char __user *ubuf,
482 compat_size_t count,
483 unsigned long poshi,
484 unsigned long poslo)
485{
486 return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo);
487}
488
489asmlinkage long compat_sys_readahead(int fd,
490 unsigned long offhi,
491 unsigned long offlo,
492 compat_size_t count)
493{
494 return sys_readahead(fd, (offhi << 32) | offlo, count);
495}
496
497long compat_sys_fadvise64(int fd,
498 unsigned long offhi,
499 unsigned long offlo,
500 compat_size_t len, int advice)
501{
502 return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice);
503}
504
505long compat_sys_fadvise64_64(int fd,
506 unsigned long offhi, unsigned long offlo,
507 unsigned long lenhi, unsigned long lenlo,
508 int advice)
509{
510 return sys_fadvise64_64(fd,
511 (offhi << 32) | offlo,
512 (lenhi << 32) | lenlo,
513 advice);
514}
515
516asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
517 compat_off_t __user *offset,
518 compat_size_t count)
519{
520 mm_segment_t old_fs = get_fs();
521 int ret;
522 off_t of;
523
524 if (offset && get_user(of, offset))
525 return -EFAULT;
526
527 set_fs(KERNEL_DS);
528 ret = sys_sendfile(out_fd, in_fd,
529 offset ? (off_t __user *) &of : NULL,
530 count);
531 set_fs(old_fs);
532
533 if (offset && put_user(of, offset))
534 return -EFAULT;
535
536 return ret;
537}
538
539asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
540 compat_loff_t __user *offset,
541 compat_size_t count)
542{
543 mm_segment_t old_fs = get_fs();
544 int ret;
545 loff_t lof;
546
547 if (offset && get_user(lof, offset))
548 return -EFAULT;
549
550 set_fs(KERNEL_DS);
551 ret = sys_sendfile64(out_fd, in_fd,
552 offset ? (loff_t __user *) &lof : NULL,
553 count);
554 set_fs(old_fs);
555
556 if (offset && put_user(lof, offset))
557 return -EFAULT;
558
559 return ret;
560}
561
562
563
564
565
566asmlinkage long sparc32_open(const char __user *filename,
567 int flags, int mode)
568{
569 return do_sys_open(AT_FDCWD, filename, flags, mode);
570}
571
572extern unsigned long do_mremap(unsigned long addr,
573 unsigned long old_len, unsigned long new_len,
574 unsigned long flags, unsigned long new_addr);
575
576asmlinkage unsigned long sys32_mremap(unsigned long addr,
577 unsigned long old_len, unsigned long new_len,
578 unsigned long flags, u32 __new_addr)
579{
580 unsigned long ret = -EINVAL;
581 unsigned long new_addr = __new_addr;
582
583 if (unlikely(sparc_mmap_check(addr, old_len)))
584 goto out;
585 if (unlikely(sparc_mmap_check(new_addr, new_len)))
586 goto out;
587 down_write(¤t->mm->mmap_sem);
588 ret = do_mremap(addr, old_len, new_len, flags, new_addr);
589 up_write(¤t->mm->mmap_sem);
590out:
591 return ret;
592}
593
594struct __sysctl_args32 {
595 u32 name;
596 int nlen;
597 u32 oldval;
598 u32 oldlenp;
599 u32 newval;
600 u32 newlen;
601 u32 __unused[4];
602};
603
604asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
605{
606#ifndef CONFIG_SYSCTL_SYSCALL
607 return -ENOSYS;
608#else
609 struct __sysctl_args32 tmp;
610 int error;
611 size_t oldlen, __user *oldlenp = NULL;
612 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7UL) & ~7UL;
613
614 if (copy_from_user(&tmp, args, sizeof(tmp)))
615 return -EFAULT;
616
617 if (tmp.oldval && tmp.oldlenp) {
618
619
620
621
622
623
624 if (get_user(oldlen, (u32 __user *)(unsigned long)tmp.oldlenp) ||
625 put_user(oldlen, (size_t __user *)addr))
626 return -EFAULT;
627 oldlenp = (size_t __user *)addr;
628 }
629
630 lock_kernel();
631 error = do_sysctl((int __user *)(unsigned long) tmp.name,
632 tmp.nlen,
633 (void __user *)(unsigned long) tmp.oldval,
634 oldlenp,
635 (void __user *)(unsigned long) tmp.newval,
636 tmp.newlen);
637 unlock_kernel();
638 if (oldlenp) {
639 if (!error) {
640 if (get_user(oldlen, (size_t __user *)addr) ||
641 put_user(oldlen, (u32 __user *)(unsigned long) tmp.oldlenp))
642 error = -EFAULT;
643 }
644 if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)))
645 error = -EFAULT;
646 }
647 return error;
648#endif
649}
650
651long sys32_lookup_dcookie(unsigned long cookie_high,
652 unsigned long cookie_low,
653 char __user *buf, size_t len)
654{
655 return sys_lookup_dcookie((cookie_high << 32) | cookie_low,
656 buf, len);
657}
658
659long compat_sync_file_range(int fd, unsigned long off_high, unsigned long off_low, unsigned long nb_high, unsigned long nb_low, int flags)
660{
661 return sys_sync_file_range(fd,
662 (off_high << 32) | off_low,
663 (nb_high << 32) | nb_low,
664 flags);
665}
666
667asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
668 u32 lenhi, u32 lenlo)
669{
670 return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
671 ((loff_t)lenhi << 32) | lenlo);
672}
673
