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/sem.h>
21 #include <linux/msg.h>
22 #include <linux/shm.h>
23 #include <linux/uio.h>
24 #include <linux/nfs_fs.h>
25 #include <linux/quota.h>
26 #include <linux/poll.h>
27 #include <linux/personality.h>
28 #include <linux/stat.h>
29 #include <linux/filter.h>
30 #include <linux/highmem.h>
31 #include <linux/highuid.h>
32 #include <linux/mman.h>
33 #include <linux/ipv6.h>
35 #include <linux/icmpv6.h>
36 #include <linux/syscalls.h>
37 #include <linux/sysctl.h>
38 #include <linux/binfmts.h>
39 #include <linux/dnotify.h>
40 #include <linux/security.h>
41 #include <linux/compat.h>
42 #include <linux/vfs.h>
43 #include <linux/ptrace.h>
44 #include <linux/slab.h>
46 #include <asm/types.h>
47 #include <asm/uaccess.h>
48 #include <asm/fpumacro.h>
49 #include <asm/mmu_context.h>
50 #include <asm/compat_signal.h>
53 asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth)
57 version = call >> 16; /* hack for backward compatibility */
63 /* sign extend semid */
64 return compat_sys_semtimedop((int)first,
65 compat_ptr(ptr), second,
67 /* else fall through for normal semop() */
69 /* struct sembuf is the same on 32 and 64bit :)) */
70 /* sign extend semid */
71 return sys_semtimedop((int)first, compat_ptr(ptr), second,
74 /* sign extend key, nsems */
75 return sys_semget((int)first, (int)second, third);
77 /* sign extend semid, semnum */
78 return compat_sys_semctl((int)first, (int)second, third,
82 /* sign extend msqid */
83 return compat_sys_msgsnd((int)first, (int)second, third,
86 /* sign extend msqid, msgtyp */
87 return compat_sys_msgrcv((int)first, second, (int)fifth,
88 third, version, compat_ptr(ptr));
91 return sys_msgget((int)first, second);
93 /* sign extend msqid */
94 return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
97 /* sign extend shmid */
98 return compat_sys_shmat((int)first, second, third, version,
101 return sys_shmdt(compat_ptr(ptr));
103 /* sign extend key_t */
104 return sys_shmget((int)first, second, third);
106 /* sign extend shmid */
107 return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
117 asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
122 return sys_truncate(path, (high << 32) | low);
125 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
130 return sys_ftruncate(fd, (high << 32) | low);
133 static int cp_compat_stat64(struct kstat *stat,
134 struct compat_stat64 __user *statbuf)
138 err = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev);
139 err |= put_user(stat->ino, &statbuf->st_ino);
140 err |= put_user(stat->mode, &statbuf->st_mode);
141 err |= put_user(stat->nlink, &statbuf->st_nlink);
142 err |= put_user(from_kuid_munged(current_user_ns(), stat->uid), &statbuf->st_uid);
143 err |= put_user(from_kgid_munged(current_user_ns(), stat->gid), &statbuf->st_gid);
144 err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev);
145 err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]);
146 err |= put_user(stat->size, &statbuf->st_size);
147 err |= put_user(stat->blksize, &statbuf->st_blksize);
148 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]);
149 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]);
150 err |= put_user(stat->blocks, &statbuf->st_blocks);
151 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
152 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
153 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
154 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
155 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
156 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
157 err |= put_user(0, &statbuf->__unused4);
158 err |= put_user(0, &statbuf->__unused5);
163 asmlinkage long compat_sys_stat64(const char __user * filename,
164 struct compat_stat64 __user *statbuf)
167 int error = vfs_stat(filename, &stat);
170 error = cp_compat_stat64(&stat, statbuf);
174 asmlinkage long compat_sys_lstat64(const char __user * filename,
175 struct compat_stat64 __user *statbuf)
178 int error = vfs_lstat(filename, &stat);
181 error = cp_compat_stat64(&stat, statbuf);
185 asmlinkage long compat_sys_fstat64(unsigned int fd,
186 struct compat_stat64 __user * statbuf)
189 int error = vfs_fstat(fd, &stat);
192 error = cp_compat_stat64(&stat, statbuf);
196 asmlinkage long compat_sys_fstatat64(unsigned int dfd,
197 const char __user *filename,
198 struct compat_stat64 __user * statbuf, int flag)
203 error = vfs_fstatat(dfd, filename, &stat, flag);
206 return cp_compat_stat64(&stat, statbuf);
209 asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2)
211 return sys_sysfs(option, arg1, arg2);
214 asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval)
218 mm_segment_t old_fs = get_fs ();
221 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t);
223 if (put_compat_timespec(&t, interval))
228 asmlinkage long compat_sys_rt_sigprocmask(int how,
229 compat_sigset_t __user *set,
230 compat_sigset_t __user *oset,
231 compat_size_t sigsetsize)
236 mm_segment_t old_fs = get_fs();
239 if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
241 switch (_NSIG_WORDS) {
242 case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
243 case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
244 case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
245 case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
249 ret = sys_rt_sigprocmask(how,
250 set ? (sigset_t __user *) &s : NULL,
251 oset ? (sigset_t __user *) &s : NULL,
256 switch (_NSIG_WORDS) {
257 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
258 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
259 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
260 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
262 if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
268 asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
269 compat_size_t sigsetsize)
274 mm_segment_t old_fs = get_fs();
277 ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize);
280 switch (_NSIG_WORDS) {
281 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
282 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
283 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
284 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
286 if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
292 asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig,
293 struct compat_siginfo __user *uinfo)
297 mm_segment_t old_fs = get_fs();
299 if (copy_siginfo_from_user32(&info, uinfo))
303 ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
308 asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act,
309 struct old_sigaction32 __user *oact)
311 struct k_sigaction new_ka, old_ka;
314 WARN_ON_ONCE(sig >= 0);
318 compat_old_sigset_t mask;
319 u32 u_handler, u_restorer;
321 ret = get_user(u_handler, &act->sa_handler);
322 new_ka.sa.sa_handler = compat_ptr(u_handler);
323 ret |= __get_user(u_restorer, &act->sa_restorer);
324 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
325 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
326 ret |= __get_user(mask, &act->sa_mask);
329 new_ka.ka_restorer = NULL;
330 siginitset(&new_ka.sa.sa_mask, mask);
333 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
336 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
337 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
338 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
339 ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
345 asmlinkage long compat_sys_rt_sigaction(int sig,
346 struct sigaction32 __user *act,
347 struct sigaction32 __user *oact,
348 void __user *restorer,
349 compat_size_t sigsetsize)
351 struct k_sigaction new_ka, old_ka;
353 compat_sigset_t set32;
355 /* XXX: Don't preclude handling different sized sigset_t's. */
356 if (sigsetsize != sizeof(compat_sigset_t))
360 u32 u_handler, u_restorer;
362 new_ka.ka_restorer = restorer;
363 ret = get_user(u_handler, &act->sa_handler);
364 new_ka.sa.sa_handler = compat_ptr(u_handler);
365 ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t));
366 switch (_NSIG_WORDS) {
367 case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32);
368 case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32);
369 case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32);
370 case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32);
372 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
373 ret |= __get_user(u_restorer, &act->sa_restorer);
374 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
379 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
382 switch (_NSIG_WORDS) {
383 case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3];
384 case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2];
385 case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1];
386 case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0];
388 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
389 ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t));
390 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
391 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
400 * sparc32_execve() executes a new program after the asm stub has set
401 * things up for us. This should basically do what I want it to.
403 asmlinkage long sparc32_execve(struct pt_regs *regs)
408 /* User register window flush is done by entry.S */
410 /* Check for indirect call. */
411 if ((u32)regs->u_regs[UREG_G1] == 0)
414 filename = getname(compat_ptr(regs->u_regs[base + UREG_I0]));
415 error = PTR_ERR(filename);
416 if (IS_ERR(filename))
419 error = compat_do_execve(filename,
420 compat_ptr(regs->u_regs[base + UREG_I1]),
421 compat_ptr(regs->u_regs[base + UREG_I2]), regs);
427 current_thread_info()->xfsr[0] = 0;
428 current_thread_info()->fpsaved[0] = 0;
429 regs->tstate &= ~TSTATE_PEF;
435 #ifdef CONFIG_MODULES
437 asmlinkage long sys32_init_module(void __user *umod, u32 len,
438 const char __user *uargs)
440 return sys_init_module(umod, len, uargs);
443 asmlinkage long sys32_delete_module(const char __user *name_user,
446 return sys_delete_module(name_user, flags);
449 #else /* CONFIG_MODULES */
451 asmlinkage long sys32_init_module(const char __user *name_user,
452 struct module __user *mod_user)
457 asmlinkage long sys32_delete_module(const char __user *name_user)
462 #endif /* CONFIG_MODULES */
464 asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
470 return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo);
473 asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd,
479 return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo);
482 asmlinkage long compat_sys_readahead(int fd,
487 return sys_readahead(fd, (offhi << 32) | offlo, count);
490 long compat_sys_fadvise64(int fd,
493 compat_size_t len, int advice)
495 return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice);
498 long compat_sys_fadvise64_64(int fd,
499 unsigned long offhi, unsigned long offlo,
500 unsigned long lenhi, unsigned long lenlo,
503 return sys_fadvise64_64(fd,
504 (offhi << 32) | offlo,
505 (lenhi << 32) | lenlo,
509 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
510 compat_off_t __user *offset,
513 mm_segment_t old_fs = get_fs();
517 if (offset && get_user(of, offset))
521 ret = sys_sendfile(out_fd, in_fd,
522 offset ? (off_t __user *) &of : NULL,
526 if (offset && put_user(of, offset))
532 asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
533 compat_loff_t __user *offset,
536 mm_segment_t old_fs = get_fs();
540 if (offset && get_user(lof, offset))
544 ret = sys_sendfile64(out_fd, in_fd,
545 offset ? (loff_t __user *) &lof : NULL,
549 if (offset && put_user(lof, offset))
555 /* This is just a version for 32-bit applications which does
556 * not force O_LARGEFILE on.
559 asmlinkage long sparc32_open(const char __user *filename,
562 return do_sys_open(AT_FDCWD, filename, flags, mode);
565 long sys32_lookup_dcookie(unsigned long cookie_high,
566 unsigned long cookie_low,
567 char __user *buf, size_t len)
569 return sys_lookup_dcookie((cookie_high << 32) | cookie_low,
573 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)
575 return sys_sync_file_range(fd,
576 (off_high << 32) | off_low,
577 (nb_high << 32) | nb_low,
581 asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
582 u32 lenhi, u32 lenlo)
584 return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
585 ((loff_t)lenhi << 32) | lenlo);