[deliverable/linux.git] / arch / sparc / kernel / sys_sparc32.c

/* sys_sparc32.c: Conversion between 32bit and 64bit native syscalls.
 *
 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
 * Copyright (C) 1997, 2007 David S. Miller (davem@davemloft.net)
 *
 * These routines maintain argument size conversion between 32bit and 64bit
 * environment.
 */

#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/capability.h>
#include <linux/fs.h> 
#include <linux/mm.h> 
#include <linux/file.h> 
#include <linux/signal.h>
#include <linux/resource.h>
#include <linux/times.h>
#include <linux/smp.h>
#include <linux/sem.h>
#include <linux/msg.h>
#include <linux/shm.h>
#include <linux/uio.h>
#include <linux/nfs_fs.h>
#include <linux/quota.h>
#include <linux/poll.h>
#include <linux/personality.h>
#include <linux/stat.h>
#include <linux/filter.h>
#include <linux/highmem.h>
#include <linux/highuid.h>
#include <linux/mman.h>
#include <linux/ipv6.h>
#include <linux/in.h>
#include <linux/icmpv6.h>
#include <linux/syscalls.h>
#include <linux/sysctl.h>
#include <linux/binfmts.h>
#include <linux/dnotify.h>
#include <linux/security.h>
#include <linux/compat.h>
#include <linux/vfs.h>
#include <linux/ptrace.h>
#include <linux/slab.h>

#include <asm/types.h>
#include <asm/uaccess.h>
#include <asm/fpumacro.h>
#include <asm/mmu_context.h>
#include <asm/compat_signal.h>

#ifdef CONFIG_SYSVIPC                                                        
asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth)
{
	int version;

	version = call >> 16; /* hack for backward compatibility */
	call &= 0xffff;

	switch (call) {
	case SEMTIMEDOP:
		if (fifth)
			/* sign extend semid */
			return compat_sys_semtimedop((int)first,
						     compat_ptr(ptr), second,
						     compat_ptr(fifth));
		/* else fall through for normal semop() */
	case SEMOP:
		/* struct sembuf is the same on 32 and 64bit :)) */
		/* sign extend semid */
		return sys_semtimedop((int)first, compat_ptr(ptr), second,
				      NULL);
	case SEMGET:
		/* sign extend key, nsems */
		return sys_semget((int)first, (int)second, third);
	case SEMCTL:
		/* sign extend semid, semnum */
		return compat_sys_semctl((int)first, (int)second, third,
					 compat_ptr(ptr));

	case MSGSND:
		/* sign extend msqid */
		return compat_sys_msgsnd((int)first, (int)second, third,
					 compat_ptr(ptr));
	case MSGRCV:
		/* sign extend msqid, msgtyp */
		return compat_sys_msgrcv((int)first, second, (int)fifth,
					 third, version, compat_ptr(ptr));
	case MSGGET:
		/* sign extend key */
		return sys_msgget((int)first, second);
	case MSGCTL:
		/* sign extend msqid */
		return compat_sys_msgctl((int)first, second, compat_ptr(ptr));

	case SHMAT:
		/* sign extend shmid */
		return compat_sys_shmat((int)first, second, third, version,
					compat_ptr(ptr));
	case SHMDT:
		return sys_shmdt(compat_ptr(ptr));
	case SHMGET:
		/* sign extend key_t */
		return sys_shmget((int)first, second, third);
	case SHMCTL:
		/* sign extend shmid */
		return compat_sys_shmctl((int)first, second, compat_ptr(ptr));

	default:
		return -ENOSYS;
	}

	return -ENOSYS;
}
#endif

asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
{
	if ((int)high < 0)
		return -EINVAL;
	else
		return sys_truncate(path, (high << 32) | low);
}

asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
{
	if ((int)high < 0)
		return -EINVAL;
	else
		return sys_ftruncate(fd, (high << 32) | low);
}

static int cp_compat_stat64(struct kstat *stat,
			    struct compat_stat64 __user *statbuf)
{
	int err;

	err  = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev);
	err |= put_user(stat->ino, &statbuf->st_ino);
	err |= put_user(stat->mode, &statbuf->st_mode);
	err |= put_user(stat->nlink, &statbuf->st_nlink);
	err |= put_user(from_kuid_munged(current_user_ns(), stat->uid), &statbuf->st_uid);
	err |= put_user(from_kgid_munged(current_user_ns(), stat->gid), &statbuf->st_gid);
	err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev);
	err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]);
	err |= put_user(stat->size, &statbuf->st_size);
	err |= put_user(stat->blksize, &statbuf->st_blksize);
	err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]);
	err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]);
	err |= put_user(stat->blocks, &statbuf->st_blocks);
	err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
	err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
	err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
	err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
	err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
	err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
	err |= put_user(0, &statbuf->__unused4);
	err |= put_user(0, &statbuf->__unused5);

	return err;
}

asmlinkage long compat_sys_stat64(const char __user * filename,
		struct compat_stat64 __user *statbuf)
{
	struct kstat stat;
	int error = vfs_stat(filename, &stat);

	if (!error)
		error = cp_compat_stat64(&stat, statbuf);
	return error;
}

asmlinkage long compat_sys_lstat64(const char __user * filename,
		struct compat_stat64 __user *statbuf)
{
	struct kstat stat;
	int error = vfs_lstat(filename, &stat);

	if (!error)
		error = cp_compat_stat64(&stat, statbuf);
	return error;
}

asmlinkage long compat_sys_fstat64(unsigned int fd,
		struct compat_stat64 __user * statbuf)
{
	struct kstat stat;
	int error = vfs_fstat(fd, &stat);

	if (!error)
		error = cp_compat_stat64(&stat, statbuf);
	return error;
}

asmlinkage long compat_sys_fstatat64(unsigned int dfd,
		const char __user *filename,
		struct compat_stat64 __user * statbuf, int flag)
{
	struct kstat stat;
	int error;

	error = vfs_fstatat(dfd, filename, &stat, flag);
	if (error)
		return error;
	return cp_compat_stat64(&stat, statbuf);
}

asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2)
{
	return sys_sysfs(option, arg1, arg2);
}

asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act,
				     struct old_sigaction32 __user *oact)
{
        struct k_sigaction new_ka, old_ka;
        int ret;

	WARN_ON_ONCE(sig >= 0);
	sig = -sig;

        if (act) {
		compat_old_sigset_t mask;
		u32 u_handler, u_restorer;
		
		ret = get_user(u_handler, &act->sa_handler);
		new_ka.sa.sa_handler =  compat_ptr(u_handler);
		ret |= __get_user(u_restorer, &act->sa_restorer);
		new_ka.sa.sa_restorer = compat_ptr(u_restorer);
		ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
		ret |= __get_user(mask, &act->sa_mask);
		if (ret)
			return ret;
		new_ka.ka_restorer = NULL;
		siginitset(&new_ka.sa.sa_mask, mask);
        }

        ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);

	if (!ret && oact) {
		ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
		ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
		ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
		ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
        }

	return ret;
}

asmlinkage long compat_sys_rt_sigaction(int sig,
					struct sigaction32 __user *act,
					struct sigaction32 __user *oact,
					void __user *restorer,
					compat_size_t sigsetsize)
{
        struct k_sigaction new_ka, old_ka;
        int ret;
	compat_sigset_t set32;

        /* XXX: Don't preclude handling different sized sigset_t's.  */
        if (sigsetsize != sizeof(compat_sigset_t))
                return -EINVAL;

        if (act) {
		u32 u_handler, u_restorer;

		new_ka.ka_restorer = restorer;
		ret = get_user(u_handler, &act->sa_handler);
		new_ka.sa.sa_handler =  compat_ptr(u_handler);
		ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t));
		switch (_NSIG_WORDS) {
		case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32);
		case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32);
		case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32);
		case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32);
		}
		ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
		ret |= __get_user(u_restorer, &act->sa_restorer);
		new_ka.sa.sa_restorer = compat_ptr(u_restorer);
                if (ret)
                	return -EFAULT;
	}

	ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);

	if (!ret && oact) {
		switch (_NSIG_WORDS) {
		case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3];
		case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2];
		case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1];
		case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0];
		}
		ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
		ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t));
		ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
		ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
		if (ret)
			ret = -EFAULT;
        }

        return ret;
}

#ifdef CONFIG_MODULES

asmlinkage long sys32_init_module(void __user *umod, u32 len,
				  const char __user *uargs)
{
	return sys_init_module(umod, len, uargs);
}

asmlinkage long sys32_delete_module(const char __user *name_user,
				    unsigned int flags)
{
	return sys_delete_module(name_user, flags);
}

#else /* CONFIG_MODULES */

asmlinkage long sys32_init_module(const char __user *name_user,
				  struct module __user *mod_user)
{
	return -ENOSYS;
}

asmlinkage long sys32_delete_module(const char __user *name_user)
{
	return -ENOSYS;
}

#endif  /* CONFIG_MODULES */

asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
					char __user *ubuf,
					compat_size_t count,
					unsigned long poshi,
					unsigned long poslo)
{
	return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo);
}

asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd,
					 char __user *ubuf,
					 compat_size_t count,
					 unsigned long poshi,
					 unsigned long poslo)
{
	return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo);
}

asmlinkage long compat_sys_readahead(int fd,
				     unsigned long offhi,
				     unsigned long offlo,
				     compat_size_t count)
{
	return sys_readahead(fd, (offhi << 32) | offlo, count);
}

long compat_sys_fadvise64(int fd,
			  unsigned long offhi,
			  unsigned long offlo,
			  compat_size_t len, int advice)
{
	return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice);
}

long compat_sys_fadvise64_64(int fd,
			     unsigned long offhi, unsigned long offlo,
			     unsigned long lenhi, unsigned long lenlo,
			     int advice)
{
	return sys_fadvise64_64(fd,
				(offhi << 32) | offlo,
				(lenhi << 32) | lenlo,
				advice);
}

/* This is just a version for 32-bit applications which does
 * not force O_LARGEFILE on.
 */

asmlinkage long sparc32_open(const char __user *filename,
			     int flags, int mode)
{
	return do_sys_open(AT_FDCWD, filename, flags, mode);
}

long sys32_lookup_dcookie(unsigned long cookie_high,
			  unsigned long cookie_low,
			  char __user *buf, size_t len)
{
	return sys_lookup_dcookie((cookie_high << 32) | cookie_low,
				  buf, len);
}

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)
{
	return sys_sync_file_range(fd,
				   (off_high << 32) | off_low,
				   (nb_high << 32) | nb_low,
				   flags);
}

asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
				     u32 lenhi, u32 lenlo)
{
	return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
			     ((loff_t)lenhi << 32) | lenlo);
}
Commit	Line	Data
bc5a2e64	1	/* sys_sparc32.c: Conversion between 32bit and 64bit native syscalls.
1da177e4 LT	2	*
1da177e4 LT	3	* Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
bc5a2e64	4	* Copyright (C) 1997, 2007 David S. Miller (davem@davemloft.net)
1da177e4 LT	5	*
	6	* These routines maintain argument size conversion between 32bit and 64bit
	7	* environment.
	8	*/
	9
1da177e4 LT	10	#include <linux/kernel.h>
1da177e4 LT	11	#include <linux/sched.h>
a9415644	12	#include <linux/capability.h>
1da177e4 LT	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>
1da177e4	19	#include <linux/smp.h>
1da177e4 LT	20	#include <linux/sem.h>
	21	#include <linux/msg.h>
	22	#include <linux/shm.h>
1da177e4 LT	23	#include <linux/uio.h>
	24	#include <linux/nfs_fs.h>
	25	#include <linux/quota.h>
1da177e4 LT	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>
	34	#include <linux/in.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>
1da177e4	43	#include <linux/ptrace.h>
5a0e3ad6	44	#include <linux/slab.h>
1da177e4 LT	45
1da177e4 LT	46	#include <asm/types.h>
1da177e4 LT	47	#include <asm/uaccess.h>
1da177e4 LT	48	#include <asm/fpumacro.h>
1da177e4	49	#include <asm/mmu_context.h>
14cc6aba	50	#include <asm/compat_signal.h>
1da177e4	51
1da177e4 LT	52	#ifdef CONFIG_SYSVIPC
	53	asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth)
	54	{
	55	int version;
	56
	57	version = call >> 16; /* hack for backward compatibility */
	58	call &= 0xffff;
	59
	60	switch (call) {
	61	case SEMTIMEDOP:
	62	if (fifth)
	63	/* sign extend semid */
	64	return compat_sys_semtimedop((int)first,
	65	compat_ptr(ptr), second,
	66	compat_ptr(fifth));
	67	/* else fall through for normal semop() */
	68	case 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,
	72	NULL);
	73	case SEMGET:
	74	/* sign extend key, nsems */
	75	return sys_semget((int)first, (int)second, third);
	76	case SEMCTL:
	77	/* sign extend semid, semnum */
	78	return compat_sys_semctl((int)first, (int)second, third,
	79	compat_ptr(ptr));
	80
	81	case MSGSND:
	82	/* sign extend msqid */
	83	return compat_sys_msgsnd((int)first, (int)second, third,
	84	compat_ptr(ptr));
	85	case MSGRCV:
	86	/* sign extend msqid, msgtyp */
	87	return compat_sys_msgrcv((int)first, second, (int)fifth,
	88	third, version, compat_ptr(ptr));
	89	case MSGGET:
	90	/* sign extend key */
	91	return sys_msgget((int)first, second);
	92	case MSGCTL:
	93	/* sign extend msqid */
	94	return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
	95
	96	case SHMAT:
	97	/* sign extend shmid */
	98	return compat_sys_shmat((int)first, second, third, version,
	99	compat_ptr(ptr));
	100	case SHMDT:
	101	return sys_shmdt(compat_ptr(ptr));
	102	case SHMGET:
	103	/* sign extend key_t */
	104	return sys_shmget((int)first, second, third);
	105	case SHMCTL:
	106	/* sign extend shmid */
	107	return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
	108
	109	default:
	110	return -ENOSYS;
6cb79b3f	111	}
1da177e4 LT	112
	113	return -ENOSYS;
	114	}
	115	#endif
	116
	117	asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
	118	{
	119	if ((int)high < 0)
	120	return -EINVAL;
	121	else
	122	return sys_truncate(path, (high << 32) \| low);
	123	}
	124
	125	asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
	126	{
	127	if ((int)high < 0)
	128	return -EINVAL;
	129	else
	130	return sys_ftruncate(fd, (high << 32) \| low);
	131	}
	132
908f5162 AB	133	static int cp_compat_stat64(struct kstat *stat,
908f5162 AB	134	struct compat_stat64 __user *statbuf)
0ba4da03 DM	135	{
	136	int err;
	137
	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);
a7c1938e EB	142	err \|= put_user(from_kuid_munged(current_user_ns(), stat->uid), &statbuf->st_uid);
a7c1938e EB	143	err \|= put_user(from_kgid_munged(current_user_ns(), stat->gid), &statbuf->st_gid);
0ba4da03 DM	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);
	159
	160	return err;
	161	}
	162
c7887325	163	asmlinkage long compat_sys_stat64(const char __user * filename,
0ba4da03 DM	164	struct compat_stat64 __user *statbuf)
	165	{
	166	struct kstat stat;
	167	int error = vfs_stat(filename, &stat);
	168
	169	if (!error)
	170	error = cp_compat_stat64(&stat, statbuf);
	171	return error;
	172	}
	173
c7887325	174	asmlinkage long compat_sys_lstat64(const char __user * filename,
0ba4da03 DM	175	struct compat_stat64 __user *statbuf)
	176	{
	177	struct kstat stat;
	178	int error = vfs_lstat(filename, &stat);
	179
	180	if (!error)
	181	error = cp_compat_stat64(&stat, statbuf);
	182	return error;
	183	}
	184
	185	asmlinkage long compat_sys_fstat64(unsigned int fd,
	186	struct compat_stat64 __user * statbuf)
	187	{
	188	struct kstat stat;
	189	int error = vfs_fstat(fd, &stat);
	190
	191	if (!error)
	192	error = cp_compat_stat64(&stat, statbuf);
	193	return error;
	194	}
	195
c7887325 DH	196	asmlinkage long compat_sys_fstatat64(unsigned int dfd,
c7887325 DH	197	const char __user *filename,
40ad7a6a DM	198	struct compat_stat64 __user * statbuf, int flag)
	199	{
	200	struct kstat stat;
0112fc22	201	int error;
40ad7a6a	202
0112fc22 OD	203	error = vfs_fstatat(dfd, filename, &stat, flag);
	204	if (error)
	205	return error;
	206	return cp_compat_stat64(&stat, statbuf);
40ad7a6a DM	207	}
40ad7a6a DM	208
1da177e4 LT	209	asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2)
	210	{
	211	return sys_sysfs(option, arg1, arg2);
	212	}
	213
1da177e4 LT	214	asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act,
	215	struct old_sigaction32 __user *oact)
	216	{
	217	struct k_sigaction new_ka, old_ka;
	218	int ret;
	219
5526b7e4 DM	220	WARN_ON_ONCE(sig >= 0);
5526b7e4 DM	221	sig = -sig;
1da177e4 LT	222
	223	if (act) {
	224	compat_old_sigset_t mask;
	225	u32 u_handler, u_restorer;
	226
	227	ret = get_user(u_handler, &act->sa_handler);
	228	new_ka.sa.sa_handler = compat_ptr(u_handler);
	229	ret \|= __get_user(u_restorer, &act->sa_restorer);
	230	new_ka.sa.sa_restorer = compat_ptr(u_restorer);
	231	ret \|= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
	232	ret \|= __get_user(mask, &act->sa_mask);
	233	if (ret)
	234	return ret;
	235	new_ka.ka_restorer = NULL;
	236	siginitset(&new_ka.sa.sa_mask, mask);
	237	}
	238
	239	ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
	240
	241	if (!ret && oact) {
	242	ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
	243	ret \|= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
	244	ret \|= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
	245	ret \|= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
	246	}
	247
	248	return ret;
	249	}
	250
	251	asmlinkage long compat_sys_rt_sigaction(int sig,
	252	struct sigaction32 __user *act,
	253	struct sigaction32 __user *oact,
	254	void __user *restorer,
	255	compat_size_t sigsetsize)
	256	{
	257	struct k_sigaction new_ka, old_ka;
	258	int ret;
	259	compat_sigset_t set32;
	260
	261	/* XXX: Don't preclude handling different sized sigset_t's. */
	262	if (sigsetsize != sizeof(compat_sigset_t))
	263	return -EINVAL;
	264
1da177e4 LT	265	if (act) {
	266	u32 u_handler, u_restorer;
	267
	268	new_ka.ka_restorer = restorer;
	269	ret = get_user(u_handler, &act->sa_handler);
	270	new_ka.sa.sa_handler = compat_ptr(u_handler);
	271	ret \|= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t));
	272	switch (_NSIG_WORDS) {
	273	case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] \| (((long)set32.sig[7]) << 32);
	274	case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] \| (((long)set32.sig[5]) << 32);
	275	case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] \| (((long)set32.sig[3]) << 32);
	276	case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] \| (((long)set32.sig[1]) << 32);
	277	}
	278	ret \|= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
	279	ret \|= __get_user(u_restorer, &act->sa_restorer);
	280	new_ka.sa.sa_restorer = compat_ptr(u_restorer);
	281	if (ret)
	282	return -EFAULT;
	283	}
	284
	285	ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
	286
	287	if (!ret && oact) {
	288	switch (_NSIG_WORDS) {
	289	case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3];
	290	case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2];
	291	case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1];
	292	case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0];
	293	}
	294	ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
	295	ret \|= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t));
	296	ret \|= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
	297	ret \|= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
	298	if (ret)
	299	ret = -EFAULT;
	300	}
	301
	302	return ret;
	303	}
	304
1da177e4 LT	305	#ifdef CONFIG_MODULES
	306
	307	asmlinkage long sys32_init_module(void __user *umod, u32 len,
	308	const char __user *uargs)
	309	{
	310	return sys_init_module(umod, len, uargs);
	311	}
	312
	313	asmlinkage long sys32_delete_module(const char __user *name_user,
	314	unsigned int flags)
	315	{
	316	return sys_delete_module(name_user, flags);
	317	}
	318
	319	#else /* CONFIG_MODULES */
	320
	321	asmlinkage long sys32_init_module(const char __user *name_user,
	322	struct module __user *mod_user)
	323	{
	324	return -ENOSYS;
	325	}
	326
	327	asmlinkage long sys32_delete_module(const char __user *name_user)
	328	{
	329	return -ENOSYS;
	330	}
	331
	332	#endif /* CONFIG_MODULES */
	333
1da177e4 LT	334	asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
	335	char __user *ubuf,
	336	compat_size_t count,
	337	unsigned long poshi,
	338	unsigned long poslo)
	339	{
	340	return sys_pread64(fd, ubuf, count, (poshi << 32) \| poslo);
	341	}
	342
	343	asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd,
	344	char __user *ubuf,
	345	compat_size_t count,
	346	unsigned long poshi,
	347	unsigned long poslo)
	348	{
	349	return sys_pwrite64(fd, ubuf, count, (poshi << 32) \| poslo);
	350	}
	351
	352	asmlinkage long compat_sys_readahead(int fd,
	353	unsigned long offhi,
	354	unsigned long offlo,
	355	compat_size_t count)
	356	{
	357	return sys_readahead(fd, (offhi << 32) \| offlo, count);
	358	}
	359
	360	long compat_sys_fadvise64(int fd,
	361	unsigned long offhi,
	362	unsigned long offlo,
	363	compat_size_t len, int advice)
	364	{
	365	return sys_fadvise64_64(fd, (offhi << 32) \| offlo, len, advice);
	366	}
	367
	368	long compat_sys_fadvise64_64(int fd,
	369	unsigned long offhi, unsigned long offlo,
	370	unsigned long lenhi, unsigned long lenlo,
	371	int advice)
	372	{
	373	return sys_fadvise64_64(fd,
	374	(offhi << 32) \| offlo,
	375	(lenhi << 32) \| lenlo,
	376	advice);
	377	}
	378
1da177e4 LT	379	/* This is just a version for 32-bit applications which does
	380	* not force O_LARGEFILE on.
	381	*/
	382
	383	asmlinkage long sparc32_open(const char __user *filename,
	384	int flags, int mode)
	385	{
5590ff0d	386	return do_sys_open(AT_FDCWD, filename, flags, mode);
1da177e4 LT	387	}
1da177e4 LT	388
1da177e4 LT	389	long sys32_lookup_dcookie(unsigned long cookie_high,
	390	unsigned long cookie_low,
	391	char __user *buf, size_t len)
	392	{
	393	return sys_lookup_dcookie((cookie_high << 32) \| cookie_low,
	394	buf, len);
	395	}
289eee6f DM	396
	397	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)
	398	{
	399	return sys_sync_file_range(fd,
	400	(off_high << 32) \| off_low,
	401	(nb_high << 32) \| nb_low,
	402	flags);
	403	}
bc5a2e64 DM	404
	405	asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
	406	u32 lenhi, u32 lenlo)
	407	{
	408	return sys_fallocate(fd, mode, ((loff_t)offhi << 32) \| offlo,
	409	((loff_t)lenhi << 32) \| lenlo);
	410	}