arch/sparc/kernel/sys_sparc32.c - android_kernel_oneplus_msm8996 - Gitiles

 /* 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_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval)
 {
 	struct timespec t;
 	int ret;
 	mm_segment_t old_fs = get_fs ();

 	set_fs (KERNEL_DS);
 	ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t);
 	set_fs (old_fs);
 	if (put_compat_timespec(&t, interval))
 		return -EFAULT;
 	return ret;
 }

 asmlinkage long compat_sys_rt_sigprocmask(int how,
 					  compat_sigset_t __user *set,
 					  compat_sigset_t __user *oset,
 					  compat_size_t sigsetsize)
 {
 	sigset_t s;
 	compat_sigset_t s32;
 	int ret;
 	mm_segment_t old_fs = get_fs();

 	if (set) {
 		if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
 			return -EFAULT;
 		switch (_NSIG_WORDS) {
 		case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
 		case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
 		case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
 		case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
 		}
 	}
 	set_fs (KERNEL_DS);
 	ret = sys_rt_sigprocmask(how,
 				 set ? (sigset_t __user *) &s : NULL,
 				 oset ? (sigset_t __user *) &s : NULL,
 				 sigsetsize);
 	set_fs (old_fs);
 	if (ret) return ret;
 	if (oset) {
 		switch (_NSIG_WORDS) {
 		case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
 		case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
 		case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
 		case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
 		}
 		if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
 			return -EFAULT;
 	}
 	return 0;
 }

 asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
 				    compat_size_t sigsetsize)
 {
 	sigset_t s;
 	compat_sigset_t s32;
 	int ret;
 	mm_segment_t old_fs = get_fs();

 	set_fs (KERNEL_DS);
 	ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize);
 	set_fs (old_fs);
 	if (!ret) {
 		switch (_NSIG_WORDS) {
 		case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
 		case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
 		case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
 		case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
 		}
 		if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
 			return -EFAULT;
 	}
 	return ret;
 }

 asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig,
 					   struct compat_siginfo __user *uinfo)
 {
 	siginfo_t info;
 	int ret;
 	mm_segment_t old_fs = get_fs();

 	if (copy_siginfo_from_user32(&info, uinfo))
 		return -EFAULT;

 	set_fs (KERNEL_DS);
 	ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
 	set_fs (old_fs);
 	return ret;
 }

 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;
 }

 /*
  * sparc32_execve() executes a new program after the asm stub has set
  * things up for us.  This should basically do what I want it to.
  */
 asmlinkage long sparc32_execve(struct pt_regs *regs)
 {
 	int error, base = 0;
 	char *filename;

 	/* User register window flush is done by entry.S */

 	/* Check for indirect call. */
 	if ((u32)regs->u_regs[UREG_G1] == 0)
 		base = 1;

 	filename = getname(compat_ptr(regs->u_regs[base + UREG_I0]));
 	error = PTR_ERR(filename);
 	if (IS_ERR(filename))
 		goto out;

 	error = compat_do_execve(filename,
 				 compat_ptr(regs->u_regs[base + UREG_I1]),
 				 compat_ptr(regs->u_regs[base + UREG_I2]), regs);

 	putname(filename);

 	if (!error) {
 		fprs_write(0);
 		current_thread_info()->xfsr[0] = 0;
 		current_thread_info()->fpsaved[0] = 0;
 		regs->tstate &= ~TSTATE_PEF;
 	}
 out:
 	return error;
 }

 #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);
 }

 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
 				    compat_off_t __user *offset,
 				    compat_size_t count)
 {
 	mm_segment_t old_fs = get_fs();
 	int ret;
 	off_t of;

 	if (offset && get_user(of, offset))
 		return -EFAULT;

 	set_fs(KERNEL_DS);
 	ret = sys_sendfile(out_fd, in_fd,
 			   offset ? (off_t __user *) &of : NULL,
 			   count);
 	set_fs(old_fs);

 	if (offset && put_user(of, offset))
 		return -EFAULT;

 	return ret;
 }

 asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
 				      compat_loff_t __user *offset,
 				      compat_size_t count)
 {
 	mm_segment_t old_fs = get_fs();
 	int ret;
 	loff_t lof;

 	if (offset && get_user(lof, offset))
 		return -EFAULT;

 	set_fs(KERNEL_DS);
 	ret = sys_sendfile64(out_fd, in_fd,
 			     offset ? (loff_t __user *) &lof : NULL,
 			     count);
 	set_fs(old_fs);

 	if (offset && put_user(lof, offset))
 		return -EFAULT;

 	return ret;
 }

 /* 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);
 }
	/* 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_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval)
	{
	struct timespec t;
	int ret;
	mm_segment_t old_fs = get_fs ();

	set_fs (KERNEL_DS);
	ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t);
	set_fs (old_fs);
	if (put_compat_timespec(&t, interval))
	return -EFAULT;
	return ret;
	}

	asmlinkage long compat_sys_rt_sigprocmask(int how,
	compat_sigset_t __user *set,
	compat_sigset_t __user *oset,
	compat_size_t sigsetsize)
	{
	sigset_t s;
	compat_sigset_t s32;
	int ret;
	mm_segment_t old_fs = get_fs();

	if (set) {
	if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
	return -EFAULT;
	switch (_NSIG_WORDS) {
	case 4: s.sig[3] = s32.sig[6] \| (((long)s32.sig[7]) << 32);
	case 3: s.sig[2] = s32.sig[4] \| (((long)s32.sig[5]) << 32);
	case 2: s.sig[1] = s32.sig[2] \| (((long)s32.sig[3]) << 32);
	case 1: s.sig[0] = s32.sig[0] \| (((long)s32.sig[1]) << 32);
	}
	}
	set_fs (KERNEL_DS);
	ret = sys_rt_sigprocmask(how,
	set ? (sigset_t __user *) &s : NULL,
	oset ? (sigset_t __user *) &s : NULL,
	sigsetsize);
	set_fs (old_fs);
	if (ret) return ret;
	if (oset) {
	switch (_NSIG_WORDS) {
	case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
	case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
	case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
	case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
	}
	if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
	return -EFAULT;
	}
	return 0;
	}

	asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
	compat_size_t sigsetsize)
	{
	sigset_t s;
	compat_sigset_t s32;
	int ret;
	mm_segment_t old_fs = get_fs();

	set_fs (KERNEL_DS);
	ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize);
	set_fs (old_fs);
	if (!ret) {
	switch (_NSIG_WORDS) {
	case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
	case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
	case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
	case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
	}
	if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
	return -EFAULT;
	}
	return ret;
	}

	asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig,
	struct compat_siginfo __user *uinfo)
	{
	siginfo_t info;
	int ret;
	mm_segment_t old_fs = get_fs();

	if (copy_siginfo_from_user32(&info, uinfo))
	return -EFAULT;

	set_fs (KERNEL_DS);
	ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
	set_fs (old_fs);
	return ret;
	}

	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;
	}

	/*
	* sparc32_execve() executes a new program after the asm stub has set
	* things up for us. This should basically do what I want it to.
	*/
	asmlinkage long sparc32_execve(struct pt_regs *regs)
	{
	int error, base = 0;
	char *filename;

	/* User register window flush is done by entry.S */

	/* Check for indirect call. */
	if ((u32)regs->u_regs[UREG_G1] == 0)
	base = 1;

	filename = getname(compat_ptr(regs->u_regs[base + UREG_I0]));
	error = PTR_ERR(filename);
	if (IS_ERR(filename))
	goto out;

	error = compat_do_execve(filename,
	compat_ptr(regs->u_regs[base + UREG_I1]),
	compat_ptr(regs->u_regs[base + UREG_I2]), regs);

	putname(filename);

	if (!error) {
	fprs_write(0);
	current_thread_info()->xfsr[0] = 0;
	current_thread_info()->fpsaved[0] = 0;
	regs->tstate &= ~TSTATE_PEF;
	}
	out:
	return error;
	}

	#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);
	}

	asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
	compat_off_t __user *offset,
	compat_size_t count)
	{
	mm_segment_t old_fs = get_fs();
	int ret;
	off_t of;

	if (offset && get_user(of, offset))
	return -EFAULT;

	set_fs(KERNEL_DS);
	ret = sys_sendfile(out_fd, in_fd,
	offset ? (off_t __user *) &of : NULL,
	count);
	set_fs(old_fs);

	if (offset && put_user(of, offset))
	return -EFAULT;

	return ret;
	}

	asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
	compat_loff_t __user *offset,
	compat_size_t count)
	{
	mm_segment_t old_fs = get_fs();
	int ret;
	loff_t lof;

	if (offset && get_user(lof, offset))
	return -EFAULT;

	set_fs(KERNEL_DS);
	ret = sys_sendfile64(out_fd, in_fd,
	offset ? (loff_t __user *) &lof : NULL,
	count);
	set_fs(old_fs);

	if (offset && put_user(lof, offset))
	return -EFAULT;

	return ret;
	}

	/* 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);
	}