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_rt_sigprocmask(int how,
215 compat_sigset_t __user *set,
216 compat_sigset_t __user *oset,
217 compat_size_t sigsetsize)
222 mm_segment_t old_fs = get_fs();
225 if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
227 switch (_NSIG_WORDS) {
228 case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
229 case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
230 case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
231 case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
235 ret = sys_rt_sigprocmask(how,
236 set ? (sigset_t __user *) &s : NULL,
237 oset ? (sigset_t __user *) &s : NULL,
242 switch (_NSIG_WORDS) {
243 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
244 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
245 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
246 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
248 if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
254 asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
255 compat_size_t sigsetsize)
260 mm_segment_t old_fs = get_fs();
263 ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize);
266 switch (_NSIG_WORDS) {
267 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
268 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
269 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
270 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
272 if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
278 asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig,
279 struct compat_siginfo __user *uinfo)
283 mm_segment_t old_fs = get_fs();
285 if (copy_siginfo_from_user32(&info, uinfo))
289 ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
294 asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act,
295 struct old_sigaction32 __user *oact)
297 struct k_sigaction new_ka, old_ka;
300 WARN_ON_ONCE(sig >= 0);
304 compat_old_sigset_t mask;
305 u32 u_handler, u_restorer;
307 ret = get_user(u_handler, &act->sa_handler);
308 new_ka.sa.sa_handler = compat_ptr(u_handler);
309 ret |= __get_user(u_restorer, &act->sa_restorer);
310 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
311 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
312 ret |= __get_user(mask, &act->sa_mask);
315 new_ka.ka_restorer = NULL;
316 siginitset(&new_ka.sa.sa_mask, mask);
319 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
322 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
323 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
324 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
325 ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
331 asmlinkage long compat_sys_rt_sigaction(int sig,
332 struct sigaction32 __user *act,
333 struct sigaction32 __user *oact,
334 void __user *restorer,
335 compat_size_t sigsetsize)
337 struct k_sigaction new_ka, old_ka;
339 compat_sigset_t set32;
341 /* XXX: Don't preclude handling different sized sigset_t's. */
342 if (sigsetsize != sizeof(compat_sigset_t))
346 u32 u_handler, u_restorer;
348 new_ka.ka_restorer = restorer;
349 ret = get_user(u_handler, &act->sa_handler);
350 new_ka.sa.sa_handler = compat_ptr(u_handler);
351 ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t));
352 switch (_NSIG_WORDS) {
353 case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32);
354 case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32);
355 case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32);
356 case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32);
358 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
359 ret |= __get_user(u_restorer, &act->sa_restorer);
360 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
365 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
368 switch (_NSIG_WORDS) {
369 case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3];
370 case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2];
371 case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1];
372 case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0];
374 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
375 ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t));
376 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
377 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
385 #ifdef CONFIG_MODULES
387 asmlinkage long sys32_init_module(void __user *umod, u32 len,
388 const char __user *uargs)
390 return sys_init_module(umod, len, uargs);
393 asmlinkage long sys32_delete_module(const char __user *name_user,
396 return sys_delete_module(name_user, flags);
399 #else /* CONFIG_MODULES */
401 asmlinkage long sys32_init_module(const char __user *name_user,
402 struct module __user *mod_user)
407 asmlinkage long sys32_delete_module(const char __user *name_user)
412 #endif /* CONFIG_MODULES */
414 asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
420 return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo);
423 asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd,
429 return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo);
432 asmlinkage long compat_sys_readahead(int fd,
437 return sys_readahead(fd, (offhi << 32) | offlo, count);
440 long compat_sys_fadvise64(int fd,
443 compat_size_t len, int advice)
445 return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice);
448 long compat_sys_fadvise64_64(int fd,
449 unsigned long offhi, unsigned long offlo,
450 unsigned long lenhi, unsigned long lenlo,
453 return sys_fadvise64_64(fd,
454 (offhi << 32) | offlo,
455 (lenhi << 32) | lenlo,
459 /* This is just a version for 32-bit applications which does
460 * not force O_LARGEFILE on.
463 asmlinkage long sparc32_open(const char __user *filename,
466 return do_sys_open(AT_FDCWD, filename, flags, mode);
469 long sys32_lookup_dcookie(unsigned long cookie_high,
470 unsigned long cookie_low,
471 char __user *buf, size_t len)
473 return sys_lookup_dcookie((cookie_high << 32) | cookie_low,
477 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)
479 return sys_sync_file_range(fd,
480 (off_high << 32) | off_low,
481 (nb_high << 32) | nb_low,
485 asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
486 u32 lenhi, u32 lenlo)
488 return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
489 ((loff_t)lenhi << 32) | lenlo);