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/utsname.h>
20 #include <linux/smp.h>
21 #include <linux/smp_lock.h>
22 #include <linux/sem.h>
23 #include <linux/msg.h>
24 #include <linux/shm.h>
25 #include <linux/slab.h>
26 #include <linux/uio.h>
27 #include <linux/nfs_fs.h>
28 #include <linux/quota.h>
29 #include <linux/module.h>
30 #include <linux/sunrpc/svc.h>
31 #include <linux/nfsd/nfsd.h>
32 #include <linux/nfsd/cache.h>
33 #include <linux/nfsd/xdr.h>
34 #include <linux/nfsd/syscall.h>
35 #include <linux/poll.h>
36 #include <linux/personality.h>
37 #include <linux/stat.h>
38 #include <linux/filter.h>
39 #include <linux/highmem.h>
40 #include <linux/highuid.h>
41 #include <linux/mman.h>
42 #include <linux/ipv6.h>
44 #include <linux/icmpv6.h>
45 #include <linux/syscalls.h>
46 #include <linux/sysctl.h>
47 #include <linux/binfmts.h>
48 #include <linux/dnotify.h>
49 #include <linux/security.h>
50 #include <linux/compat.h>
51 #include <linux/vfs.h>
52 #include <linux/netfilter_ipv4/ip_tables.h>
53 #include <linux/ptrace.h>
55 #include <asm/types.h>
56 #include <asm/uaccess.h>
57 #include <asm/fpumacro.h>
58 #include <asm/mmu_context.h>
59 #include <asm/compat_signal.h>
62 asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth)
66 version = call >> 16; /* hack for backward compatibility */
72 /* sign extend semid */
73 return compat_sys_semtimedop((int)first,
74 compat_ptr(ptr), second,
76 /* else fall through for normal semop() */
78 /* struct sembuf is the same on 32 and 64bit :)) */
79 /* sign extend semid */
80 return sys_semtimedop((int)first, compat_ptr(ptr), second,
83 /* sign extend key, nsems */
84 return sys_semget((int)first, (int)second, third);
86 /* sign extend semid, semnum */
87 return compat_sys_semctl((int)first, (int)second, third,
91 /* sign extend msqid */
92 return compat_sys_msgsnd((int)first, (int)second, third,
95 /* sign extend msqid, msgtyp */
96 return compat_sys_msgrcv((int)first, second, (int)fifth,
97 third, version, compat_ptr(ptr));
100 return sys_msgget((int)first, second);
102 /* sign extend msqid */
103 return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
106 /* sign extend shmid */
107 return compat_sys_shmat((int)first, second, third, version,
110 return sys_shmdt(compat_ptr(ptr));
112 /* sign extend key_t */
113 return sys_shmget((int)first, second, third);
115 /* sign extend shmid */
116 return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
126 asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
131 return sys_truncate(path, (high << 32) | low);
134 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
139 return sys_ftruncate(fd, (high << 32) | low);
142 static int cp_compat_stat64(struct kstat *stat,
143 struct compat_stat64 __user *statbuf)
147 err = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev);
148 err |= put_user(stat->ino, &statbuf->st_ino);
149 err |= put_user(stat->mode, &statbuf->st_mode);
150 err |= put_user(stat->nlink, &statbuf->st_nlink);
151 err |= put_user(stat->uid, &statbuf->st_uid);
152 err |= put_user(stat->gid, &statbuf->st_gid);
153 err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev);
154 err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]);
155 err |= put_user(stat->size, &statbuf->st_size);
156 err |= put_user(stat->blksize, &statbuf->st_blksize);
157 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]);
158 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]);
159 err |= put_user(stat->blocks, &statbuf->st_blocks);
160 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
161 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
162 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
163 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
164 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
165 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
166 err |= put_user(0, &statbuf->__unused4);
167 err |= put_user(0, &statbuf->__unused5);
172 asmlinkage long compat_sys_stat64(char __user * filename,
173 struct compat_stat64 __user *statbuf)
176 int error = vfs_stat(filename, &stat);
179 error = cp_compat_stat64(&stat, statbuf);
183 asmlinkage long compat_sys_lstat64(char __user * filename,
184 struct compat_stat64 __user *statbuf)
187 int error = vfs_lstat(filename, &stat);
190 error = cp_compat_stat64(&stat, statbuf);
194 asmlinkage long compat_sys_fstat64(unsigned int fd,
195 struct compat_stat64 __user * statbuf)
198 int error = vfs_fstat(fd, &stat);
201 error = cp_compat_stat64(&stat, statbuf);
205 asmlinkage long compat_sys_fstatat64(unsigned int dfd, char __user *filename,
206 struct compat_stat64 __user * statbuf, int flag)
211 error = vfs_fstatat(dfd, filename, &stat, flag);
214 return cp_compat_stat64(&stat, statbuf);
217 asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2)
219 return sys_sysfs(option, arg1, arg2);
222 asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval)
226 mm_segment_t old_fs = get_fs ();
229 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t);
231 if (put_compat_timespec(&t, interval))
236 asmlinkage long compat_sys_rt_sigprocmask(int how,
237 compat_sigset_t __user *set,
238 compat_sigset_t __user *oset,
239 compat_size_t sigsetsize)
244 mm_segment_t old_fs = get_fs();
247 if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
249 switch (_NSIG_WORDS) {
250 case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
251 case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
252 case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
253 case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
257 ret = sys_rt_sigprocmask(how,
258 set ? (sigset_t __user *) &s : NULL,
259 oset ? (sigset_t __user *) &s : NULL,
264 switch (_NSIG_WORDS) {
265 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
266 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
267 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
268 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
270 if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
276 asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
277 compat_size_t sigsetsize)
282 mm_segment_t old_fs = get_fs();
285 ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize);
288 switch (_NSIG_WORDS) {
289 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
290 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
291 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
292 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
294 if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
300 asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig,
301 struct compat_siginfo __user *uinfo)
305 mm_segment_t old_fs = get_fs();
307 if (copy_siginfo_from_user32(&info, uinfo))
311 ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
316 asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act,
317 struct old_sigaction32 __user *oact)
319 struct k_sigaction new_ka, old_ka;
322 WARN_ON_ONCE(sig >= 0);
326 compat_old_sigset_t mask;
327 u32 u_handler, u_restorer;
329 ret = get_user(u_handler, &act->sa_handler);
330 new_ka.sa.sa_handler = compat_ptr(u_handler);
331 ret |= __get_user(u_restorer, &act->sa_restorer);
332 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
333 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
334 ret |= __get_user(mask, &act->sa_mask);
337 new_ka.ka_restorer = NULL;
338 siginitset(&new_ka.sa.sa_mask, mask);
341 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
344 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
345 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
346 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
347 ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
353 asmlinkage long compat_sys_rt_sigaction(int sig,
354 struct sigaction32 __user *act,
355 struct sigaction32 __user *oact,
356 void __user *restorer,
357 compat_size_t sigsetsize)
359 struct k_sigaction new_ka, old_ka;
361 compat_sigset_t set32;
363 /* XXX: Don't preclude handling different sized sigset_t's. */
364 if (sigsetsize != sizeof(compat_sigset_t))
368 u32 u_handler, u_restorer;
370 new_ka.ka_restorer = restorer;
371 ret = get_user(u_handler, &act->sa_handler);
372 new_ka.sa.sa_handler = compat_ptr(u_handler);
373 ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t));
374 switch (_NSIG_WORDS) {
375 case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32);
376 case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32);
377 case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32);
378 case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32);
380 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
381 ret |= __get_user(u_restorer, &act->sa_restorer);
382 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
387 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
390 switch (_NSIG_WORDS) {
391 case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3];
392 case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2];
393 case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1];
394 case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0];
396 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
397 ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t));
398 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
399 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
408 * sparc32_execve() executes a new program after the asm stub has set
409 * things up for us. This should basically do what I want it to.
411 asmlinkage long sparc32_execve(struct pt_regs *regs)
416 /* User register window flush is done by entry.S */
418 /* Check for indirect call. */
419 if ((u32)regs->u_regs[UREG_G1] == 0)
422 filename = getname(compat_ptr(regs->u_regs[base + UREG_I0]));
423 error = PTR_ERR(filename);
424 if (IS_ERR(filename))
427 error = compat_do_execve(filename,
428 compat_ptr(regs->u_regs[base + UREG_I1]),
429 compat_ptr(regs->u_regs[base + UREG_I2]), regs);
435 current_thread_info()->xfsr[0] = 0;
436 current_thread_info()->fpsaved[0] = 0;
437 regs->tstate &= ~TSTATE_PEF;
443 #ifdef CONFIG_MODULES
445 asmlinkage long sys32_init_module(void __user *umod, u32 len,
446 const char __user *uargs)
448 return sys_init_module(umod, len, uargs);
451 asmlinkage long sys32_delete_module(const char __user *name_user,
454 return sys_delete_module(name_user, flags);
457 #else /* CONFIG_MODULES */
459 asmlinkage long sys32_init_module(const char __user *name_user,
460 struct module __user *mod_user)
465 asmlinkage long sys32_delete_module(const char __user *name_user)
470 #endif /* CONFIG_MODULES */
472 asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
478 return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo);
481 asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd,
487 return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo);
490 asmlinkage long compat_sys_readahead(int fd,
495 return sys_readahead(fd, (offhi << 32) | offlo, count);
498 long compat_sys_fadvise64(int fd,
501 compat_size_t len, int advice)
503 return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice);
506 long compat_sys_fadvise64_64(int fd,
507 unsigned long offhi, unsigned long offlo,
508 unsigned long lenhi, unsigned long lenlo,
511 return sys_fadvise64_64(fd,
512 (offhi << 32) | offlo,
513 (lenhi << 32) | lenlo,
517 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
518 compat_off_t __user *offset,
521 mm_segment_t old_fs = get_fs();
525 if (offset && get_user(of, offset))
529 ret = sys_sendfile(out_fd, in_fd,
530 offset ? (off_t __user *) &of : NULL,
534 if (offset && put_user(of, offset))
540 asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
541 compat_loff_t __user *offset,
544 mm_segment_t old_fs = get_fs();
548 if (offset && get_user(lof, offset))
552 ret = sys_sendfile64(out_fd, in_fd,
553 offset ? (loff_t __user *) &lof : NULL,
557 if (offset && put_user(lof, offset))
563 /* This is just a version for 32-bit applications which does
564 * not force O_LARGEFILE on.
567 asmlinkage long sparc32_open(const char __user *filename,
570 return do_sys_open(AT_FDCWD, filename, flags, mode);
573 extern unsigned long do_mremap(unsigned long addr,
574 unsigned long old_len, unsigned long new_len,
575 unsigned long flags, unsigned long new_addr);
577 asmlinkage unsigned long sys32_mremap(unsigned long addr,
578 unsigned long old_len, unsigned long new_len,
579 unsigned long flags, u32 __new_addr)
581 unsigned long ret = -EINVAL;
582 unsigned long new_addr = __new_addr;
584 if (unlikely(sparc_mmap_check(addr, old_len)))
586 if (unlikely(sparc_mmap_check(new_addr, new_len)))
588 down_write(¤t->mm->mmap_sem);
589 ret = do_mremap(addr, old_len, new_len, flags, new_addr);
590 up_write(¤t->mm->mmap_sem);
595 struct __sysctl_args32 {
605 asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
607 #ifndef CONFIG_SYSCTL_SYSCALL
610 struct __sysctl_args32 tmp;
612 size_t oldlen, __user *oldlenp = NULL;
613 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7UL) & ~7UL;
615 if (copy_from_user(&tmp, args, sizeof(tmp)))
618 if (tmp.oldval && tmp.oldlenp) {
619 /* Duh, this is ugly and might not work if sysctl_args
620 is in read-only memory, but do_sysctl does indirectly
621 a lot of uaccess in both directions and we'd have to
622 basically copy the whole sysctl.c here, and
623 glibc's __sysctl uses rw memory for the structure
625 if (get_user(oldlen, (u32 __user *)(unsigned long)tmp.oldlenp) ||
626 put_user(oldlen, (size_t __user *)addr))
628 oldlenp = (size_t __user *)addr;
632 error = do_sysctl((int __user *)(unsigned long) tmp.name,
634 (void __user *)(unsigned long) tmp.oldval,
636 (void __user *)(unsigned long) tmp.newval,
641 if (get_user(oldlen, (size_t __user *)addr) ||
642 put_user(oldlen, (u32 __user *)(unsigned long) tmp.oldlenp))
645 if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)))
652 long sys32_lookup_dcookie(unsigned long cookie_high,
653 unsigned long cookie_low,
654 char __user *buf, size_t len)
656 return sys_lookup_dcookie((cookie_high << 32) | cookie_low,
660 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)
662 return sys_sync_file_range(fd,
663 (off_high << 32) | off_low,
664 (nb_high << 32) | nb_low,
668 asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
669 u32 lenhi, u32 lenlo)
671 return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
672 ((loff_t)lenhi << 32) | lenlo);