1 /* sys_sparc32.c: Conversion between 32bit and 64bit native syscalls.
3 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
4 * Copyright (C) 1997, 2007 David S. Miller (davem@davemloft.net)
6 * These routines maintain argument size conversion between 32bit and 64bit
10 #include <linux/kernel.h>
11 #include <linux/sched.h>
12 #include <linux/capability.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>
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>
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>
61 asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth)
65 version = call >> 16; /* hack for backward compatibility */
71 /* sign extend semid */
72 return compat_sys_semtimedop((int)first,
73 compat_ptr(ptr), second,
75 /* else fall through for normal semop() */
77 /* struct sembuf is the same on 32 and 64bit :)) */
78 /* sign extend semid */
79 return sys_semtimedop((int)first, compat_ptr(ptr), second,
82 /* sign extend key, nsems */
83 return sys_semget((int)first, (int)second, third);
85 /* sign extend semid, semnum */
86 return compat_sys_semctl((int)first, (int)second, third,
90 /* sign extend msqid */
91 return compat_sys_msgsnd((int)first, (int)second, third,
94 /* sign extend msqid, msgtyp */
95 return compat_sys_msgrcv((int)first, second, (int)fifth,
96 third, version, compat_ptr(ptr));
99 return sys_msgget((int)first, second);
101 /* sign extend msqid */
102 return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
105 /* sign extend shmid */
106 return compat_sys_shmat((int)first, second, third, version,
109 return sys_shmdt(compat_ptr(ptr));
111 /* sign extend key_t */
112 return sys_shmget((int)first, second, third);
114 /* sign extend shmid */
115 return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
125 asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
130 return sys_truncate(path, (high << 32) | low);
133 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
138 return sys_ftruncate(fd, (high << 32) | low);
141 static int cp_compat_stat64(struct kstat *stat,
142 struct compat_stat64 __user *statbuf)
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);
171 asmlinkage long compat_sys_stat64(char __user * filename,
172 struct compat_stat64 __user *statbuf)
175 int error = vfs_stat(filename, &stat);
178 error = cp_compat_stat64(&stat, statbuf);
182 asmlinkage long compat_sys_lstat64(char __user * filename,
183 struct compat_stat64 __user *statbuf)
186 int error = vfs_lstat(filename, &stat);
189 error = cp_compat_stat64(&stat, statbuf);
193 asmlinkage long compat_sys_fstat64(unsigned int fd,
194 struct compat_stat64 __user * statbuf)
197 int error = vfs_fstat(fd, &stat);
200 error = cp_compat_stat64(&stat, statbuf);
204 asmlinkage long compat_sys_fstatat64(unsigned int dfd, char __user *filename,
205 struct compat_stat64 __user * statbuf, int flag)
210 error = vfs_fstatat(dfd, filename, &stat, flag);
213 return cp_compat_stat64(&stat, statbuf);
216 asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2)
218 return sys_sysfs(option, arg1, arg2);
221 asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval)
225 mm_segment_t old_fs = get_fs ();
228 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t);
230 if (put_compat_timespec(&t, interval))
235 asmlinkage long compat_sys_rt_sigprocmask(int how,
236 compat_sigset_t __user *set,
237 compat_sigset_t __user *oset,
238 compat_size_t sigsetsize)
243 mm_segment_t old_fs = get_fs();
246 if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
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);
256 ret = sys_rt_sigprocmask(how,
257 set ? (sigset_t __user *) &s : NULL,
258 oset ? (sigset_t __user *) &s : NULL,
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];
269 if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
275 asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
276 compat_size_t sigsetsize)
281 mm_segment_t old_fs = get_fs();
284 ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize);
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];
293 if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
299 asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig,
300 struct compat_siginfo __user *uinfo)
304 mm_segment_t old_fs = get_fs();
306 if (copy_siginfo_from_user32(&info, uinfo))
310 ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
315 asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act,
316 struct old_sigaction32 __user *oact)
318 struct k_sigaction new_ka, old_ka;
321 WARN_ON_ONCE(sig >= 0);
325 compat_old_sigset_t mask;
326 u32 u_handler, u_restorer;
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);
336 new_ka.ka_restorer = NULL;
337 siginitset(&new_ka.sa.sa_mask, mask);
340 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
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);
352 asmlinkage 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)
358 struct k_sigaction new_ka, old_ka;
360 compat_sigset_t set32;
362 /* XXX: Don't preclude handling different sized sigset_t's. */
363 if (sigsetsize != sizeof(compat_sigset_t))
367 u32 u_handler, u_restorer;
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);
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);
386 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
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];
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);
407 * sparc32_execve() executes a new program after the asm stub has set
408 * things up for us. This should basically do what I want it to.
410 asmlinkage long sparc32_execve(struct pt_regs *regs)
415 /* User register window flush is done by entry.S */
417 /* Check for indirect call. */
418 if ((u32)regs->u_regs[UREG_G1] == 0)
421 filename = getname(compat_ptr(regs->u_regs[base + UREG_I0]));
422 error = PTR_ERR(filename);
423 if (IS_ERR(filename))
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);
434 current_thread_info()->xfsr[0] = 0;
435 current_thread_info()->fpsaved[0] = 0;
436 regs->tstate &= ~TSTATE_PEF;
442 #ifdef CONFIG_MODULES
444 asmlinkage long sys32_init_module(void __user *umod, u32 len,
445 const char __user *uargs)
447 return sys_init_module(umod, len, uargs);
450 asmlinkage long sys32_delete_module(const char __user *name_user,
453 return sys_delete_module(name_user, flags);
456 #else /* CONFIG_MODULES */
458 asmlinkage long sys32_init_module(const char __user *name_user,
459 struct module __user *mod_user)
464 asmlinkage long sys32_delete_module(const char __user *name_user)
469 #endif /* CONFIG_MODULES */
471 asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
477 return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo);
480 asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd,
486 return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo);
489 asmlinkage long compat_sys_readahead(int fd,
494 return sys_readahead(fd, (offhi << 32) | offlo, count);
497 long compat_sys_fadvise64(int fd,
500 compat_size_t len, int advice)
502 return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice);
505 long compat_sys_fadvise64_64(int fd,
506 unsigned long offhi, unsigned long offlo,
507 unsigned long lenhi, unsigned long lenlo,
510 return sys_fadvise64_64(fd,
511 (offhi << 32) | offlo,
512 (lenhi << 32) | lenlo,
516 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
517 compat_off_t __user *offset,
520 mm_segment_t old_fs = get_fs();
524 if (offset && get_user(of, offset))
528 ret = sys_sendfile(out_fd, in_fd,
529 offset ? (off_t __user *) &of : NULL,
533 if (offset && put_user(of, offset))
539 asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
540 compat_loff_t __user *offset,
543 mm_segment_t old_fs = get_fs();
547 if (offset && get_user(lof, offset))
551 ret = sys_sendfile64(out_fd, in_fd,
552 offset ? (loff_t __user *) &lof : NULL,
556 if (offset && put_user(lof, offset))
562 /* This is just a version for 32-bit applications which does
563 * not force O_LARGEFILE on.
566 asmlinkage long sparc32_open(const char __user *filename,
569 return do_sys_open(AT_FDCWD, filename, flags, mode);
572 extern unsigned long do_mremap(unsigned long addr,
573 unsigned long old_len, unsigned long new_len,
574 unsigned long flags, unsigned long new_addr);
576 asmlinkage unsigned long sys32_mremap(unsigned long addr,
577 unsigned long old_len, unsigned long new_len,
578 unsigned long flags, u32 __new_addr)
580 unsigned long ret = -EINVAL;
581 unsigned long new_addr = __new_addr;
583 if (unlikely(sparc_mmap_check(addr, old_len)))
585 if (unlikely(sparc_mmap_check(new_addr, new_len)))
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);
594 struct __sysctl_args32 {
604 asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
606 #ifndef CONFIG_SYSCTL_SYSCALL
609 struct __sysctl_args32 tmp;
611 size_t oldlen, __user *oldlenp = NULL;
612 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7UL) & ~7UL;
614 if (copy_from_user(&tmp, args, sizeof(tmp)))
617 if (tmp.oldval && tmp.oldlenp) {
618 /* Duh, this is ugly and might not work if sysctl_args
619 is in read-only memory, but do_sysctl does indirectly
620 a lot of uaccess in both directions and we'd have to
621 basically copy the whole sysctl.c here, and
622 glibc's __sysctl uses rw memory for the structure
624 if (get_user(oldlen, (u32 __user *)(unsigned long)tmp.oldlenp) ||
625 put_user(oldlen, (size_t __user *)addr))
627 oldlenp = (size_t __user *)addr;
631 error = do_sysctl((int __user *)(unsigned long) tmp.name,
633 (void __user *)(unsigned long) tmp.oldval,
635 (void __user *)(unsigned long) tmp.newval,
640 if (get_user(oldlen, (size_t __user *)addr) ||
641 put_user(oldlen, (u32 __user *)(unsigned long) tmp.oldlenp))
644 if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)))
651 long sys32_lookup_dcookie(unsigned long cookie_high,
652 unsigned long cookie_low,
653 char __user *buf, size_t len)
655 return sys_lookup_dcookie((cookie_high << 32) | cookie_low,
659 long compat_sync_file_range(int fd, unsigned long off_high, unsigned long off_low, unsigned long nb_high, unsigned long nb_low, int flags)
661 return sys_sync_file_range(fd,
662 (off_high << 32) | off_low,
663 (nb_high << 32) | nb_low,
667 asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
668 u32 lenhi, u32 lenlo)
670 return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
671 ((loff_t)lenhi << 32) | lenlo);