[PATCH] parisc64

Add support for the parisc64 architecture.

arch/parisc/kernel/signal32.c

+/* mostly borrowed from kernel/signal.c */
+#include <linux/config.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/unistd.h>
+#include <linux/smp_lock.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+
+#include <asm/uaccess.h>
+#include "sys32.h"
+
+struct k_sigaction32 {
+	struct sigaction32 sa;
+};
+
+typedef unsigned int old_sigset_t32;
+
+static int
+put_old_sigset32(old_sigset_t32 *up, old_sigset_t *set)
+{
+	old_sigset_t32 set32 = *set;
+	return put_user(set32, up);
+}
+
+static int
+get_old_segset32(old_sigset_t32 *up, old_sigset_t *set)
+{
+	old_sigset_t32 set32;
+	int r;
+
+	if ((r = get_user(set32, up)) == 0)
+		*set = set32;
+
+	return r;
+}
+
+long
+sys32_sigpending(old_sigset_t32 *set)
+{
+	extern long sys_sigpending(old_sigset_t *set);
+	old_sigset_t pending;
+	int ret;
+
+	KERNEL_SYSCALL(ret, sys_sigpending, &pending);
+
+	/* can't put_user an old_sigset_t -- it is too big */
+	if (put_old_sigset32(set, &pending))
+		return -EFAULT;
+
+	return ret;
+}
+
+int sys32_sigprocmask(int how, old_sigset_t32 *set, 
+				 old_sigset_t32 *oset)
+{
+	extern int sys_sigprocmask(int how, old_sigset_t *set, 
+				 old_sigset_t *oset);
+	old_sigset_t s;
+	int ret;
+
+	if (set && get_old_segset32 (set, &s))
+		return -EFAULT;
+	KERNEL_SYSCALL(ret, sys_sigprocmask, how, set ? &s : NULL, oset ? &s : NULL);
+	if (!ret && oset && put_old_sigset32(oset, &s))
+		return -EFAULT;
+	return ret;
+}
+
+static inline void
+sigset_32to64(sigset_t *s64, sigset_t32 *s32)
+{
+	s64->sig[0] = s32->sig[0] | ((unsigned long)s32->sig[1] << 32);
+}
+
+static inline void
+sigset_64to32(sigset_t32 *s32, sigset_t *s64)
+{
+	s32->sig[0] = s64->sig[0] & 0xffffffffUL;
+	s32->sig[1] = (s64->sig[0] >> 32) & 0xffffffffUL;
+}
+
+static int
+put_sigset32(sigset_t32 *up, sigset_t *set, size_t sz)
+{
+	sigset_t32 s;
+
+	if (sz != sizeof *set) panic("put_sigset32()");
+	sigset_64to32(&s, set);
+
+	return copy_to_user(up, &s, sizeof s);
+}
+
+static int
+get_sigset32(sigset_t32 *up, sigset_t *set, size_t sz)
+{
+	sigset_t32 s;
+	int r;
+
+	if (sz != sizeof *set) panic("put_sigset32()");
+
+	if ((r = copy_from_user(&s, up, sz)) == 0) {
+		sigset_32to64(set, &s);
+	}
+
+	return r;
+}
+
+int sys32_rt_sigprocmask(int how, sigset_t32 *set, sigset_t32 *oset,
+				    unsigned int sigsetsize)
+{
+	extern long sys_rt_sigprocmask(int how,
+				    sigset_t *set, sigset_t *oset,
+				   size_t sigsetsize);
+	sigset_t old_set, new_set;
+	int ret;
+
+	if (set && get_sigset32(set, &new_set, sigsetsize))
+		return -EFAULT;
+	
+	KERNEL_SYSCALL(ret, sys_rt_sigprocmask, how, set ? &new_set : NULL,
+				 oset ? &old_set : NULL, sigsetsize);
+
+	if (!ret && oset && put_sigset32(oset, &old_set, sigsetsize))
+		return -EFAULT;
+
+	return ret;
+}
+
+
+int sys32_rt_sigpending(sigset_t32 *uset, unsigned int sigsetsize)
+{
+	int ret;
+	sigset_t set;
+	extern long sys_rt_sigpending(sigset_t *set, size_t sigsetsize);
+
+	KERNEL_SYSCALL(ret, sys_rt_sigpending, &set, sigsetsize);
+
+	if (!ret && put_sigset32(uset, &set, sigsetsize))
+		return -EFAULT;
+
+	return ret;
+}
+
+long
+sys32_rt_sigaction(int sig, const struct sigaction32 *act, struct sigaction32 *oact,
+                 size_t sigsetsize)
+{
+	struct k_sigaction32 new_sa32, old_sa32;
+	struct k_sigaction new_sa, old_sa;
+	int ret = -EINVAL;
+
+	if (act) {
+		if (copy_from_user(&new_sa32.sa, act, sizeof new_sa32.sa))
+			return -EFAULT;
+		new_sa.sa.sa_handler = (__sighandler_t)(unsigned long)new_sa32.sa.sa_handler;
+		new_sa.sa.sa_flags = new_sa32.sa.sa_flags;
+		sigset_32to64(&new_sa.sa.sa_mask, &new_sa32.sa.sa_mask);
+	}
+
+	ret = do_sigaction(sig, act ? &new_sa : NULL, oact ? &old_sa : NULL);
+
+	if (!ret && oact) {
+		sigset_64to32(&old_sa32.sa.sa_mask, &old_sa.sa.sa_mask);
+		old_sa32.sa.sa_flags = old_sa.sa.sa_flags;
+		old_sa32.sa.sa_handler = (__sighandler_t32)(unsigned long)old_sa.sa.sa_handler;
+		if (copy_to_user(oact, &old_sa32.sa, sizeof old_sa32.sa))
+			return -EFAULT;
+	}
+	return ret;
+}
+
+typedef struct {
+	unsigned int ss_sp;
+	int ss_flags;
+	__kernel_size_t32 ss_size;
+} stack_t32;
+
+int 
+do_sigaltstack32 (const stack_t32 *uss32, stack_t32 *uoss32, unsigned long sp)
+{
+	stack_t32 ss32, oss32;
+	stack_t ss, oss;
+	stack_t *ssp = NULL, *ossp = NULL;
+	int ret;
+
+	if (uss32) {
+		if (copy_from_user(&ss32, uss32, sizeof ss32))
+			return -EFAULT;
+
+		ss.ss_sp = (void *)(unsigned long)ss32.ss_sp;
+		ss.ss_flags = ss32.ss_flags;
+		ss.ss_size = ss32.ss_size;
+
+		ssp = &ss;
+	}
+
+	if (uoss32)
+		ossp = &oss;
+
+	KERNEL_SYSCALL(ret, do_sigaltstack, ssp, ossp, sp);
+
+	if (!ret && uoss32) {
+		oss32.ss_sp = (unsigned int)(unsigned long)oss.ss_sp;
+		oss32.ss_flags = oss.ss_flags;
+		oss32.ss_size = oss.ss_size;
+		if (copy_to_user(uoss32, &oss32, sizeof *uoss32))
+			return -EFAULT;
+	}
+
+	return ret;
+}

arch/parisc/kernel/sys_parisc32.c

+/*
+ * sys_parisc32.c: Conversion between 32bit and 64bit native syscalls.
+ *
+ * Copyright (C) 2000-2001 Hewlett Packard Company
+ * Copyright (C) 2000 John Marvin
+ * Copyright (C) 2001 Matthew Wilcox
+ *
+ * These routines maintain argument size conversion between 32bit and 64bit
+ * environment. Based heavily on sys_ia32.c and sys_sparc32.c.
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/fs.h> 
+#include <linux/mm.h> 
+#include <linux/file.h> 
+#include <linux/signal.h>
+#include <linux/utime.h>
+#include <linux/resource.h>
+#include <linux/times.h>
+#include <linux/utsname.h>
+#include <linux/timex.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/sem.h>
+#include <linux/msg.h>
+#include <linux/shm.h>
+#include <linux/slab.h>
+#include <linux/uio.h>
+#include <linux/nfs_fs.h>
+#include <linux/smb_fs.h>
+#include <linux/smb_mount.h>
+#include <linux/ncp_fs.h>
+#include <linux/quota.h>
+#include <linux/module.h>
+#include <linux/sunrpc/svc.h>
+#include <linux/nfsd/nfsd.h>
+#include <linux/nfsd/cache.h>
+#include <linux/nfsd/xdr.h>
+#include <linux/nfsd/syscall.h>
+#include <linux/poll.h>
+#include <linux/personality.h>
+#include <linux/stat.h>
+#include <linux/filter.h>			/* for setsockopt() */
+#include <linux/icmpv6.h>			/* for setsockopt() */
+#include <linux/netfilter_ipv4/ip_queue.h>	/* for setsockopt() */
+#include <linux/netfilter_ipv4/ip_tables.h>	/* for setsockopt() */
+#include <linux/netfilter_ipv6/ip6_tables.h>	/* for setsockopt() */
+#include <linux/highmem.h>
+#include <linux/highuid.h>
+#include <linux/mman.h>
+#include <linux/binfmts.h>
+#include <linux/namei.h>
+
+#include <asm/types.h>
+#include <asm/uaccess.h>
+#include <asm/semaphore.h>
+#include <asm/mmu_context.h>
+
+#include "sys32.h"
+
+#define A(__x) ((unsigned long)(__x))
+
+
+#undef DEBUG
+
+#ifdef DEBUG
+#define DBG(x)	printk x
+#else
+#define DBG(x)
+#endif
+
+/* For this source file, we want overflow handling. */
+
+#undef high2lowuid
+#undef high2lowgid
+#undef low2highuid
+#undef low2highgid
+#undef SET_UID16
+#undef SET_GID16
+#undef NEW_TO_OLD_UID
+#undef NEW_TO_OLD_GID
+#undef SET_OLDSTAT_UID
+#undef SET_OLDSTAT_GID
+#undef SET_STAT_UID
+#undef SET_STAT_GID
+
+#define high2lowuid(uid) ((uid) > 65535) ? (u16)overflowuid : (u16)(uid)
+#define high2lowgid(gid) ((gid) > 65535) ? (u16)overflowgid : (u16)(gid)
+#define low2highuid(uid) ((uid) == (u16)-1) ? (uid_t)-1 : (uid_t)(uid)
+#define low2highgid(gid) ((gid) == (u16)-1) ? (gid_t)-1 : (gid_t)(gid)
+#define SET_UID16(var, uid)	var = high2lowuid(uid)
+#define SET_GID16(var, gid)	var = high2lowgid(gid)
+#define NEW_TO_OLD_UID(uid)	high2lowuid(uid)
+#define NEW_TO_OLD_GID(gid)	high2lowgid(gid)
+#define SET_OLDSTAT_UID(stat, uid)	(stat).st_uid = high2lowuid(uid)
+#define SET_OLDSTAT_GID(stat, gid)	(stat).st_gid = high2lowgid(gid)
+#define SET_STAT_UID(stat, uid)		(stat).st_uid = high2lowuid(uid)
+#define SET_STAT_GID(stat, gid)		(stat).st_gid = high2lowgid(gid)
+
+/*
+ * count32() counts the number of arguments/envelopes. It is basically
+ *           a copy of count() from fs/exec.c, except that it works
+ *           with 32 bit argv and envp pointers.
+ */
+
+static int count32(u32 *argv, int max)
+{
+	int i = 0;
+
+	if (argv != NULL) {
+		for (;;) {
+			u32 p;
+			int error;
+
+			error = get_user(p,argv);
+			if (error)
+				return error;
+			if (!p)
+				break;
+			argv++;
+			if(++i > max)
+				return -E2BIG;
+		}
+	}
+	return i;
+}
+
+
+/*
+ * copy_strings32() is basically a copy of copy_strings() from fs/exec.c
+ *                  except that it works with 32 bit argv and envp pointers.
+ */
+
+
+static int copy_strings32(int argc, u32 *argv, struct linux_binprm *bprm)
+{
+	while (argc-- > 0) {
+		u32 str;
+		int len;
+		unsigned long pos;
+
+		if (get_user(str, argv + argc) ||
+		    !str ||
+		    !(len = strnlen_user((char *)A(str), bprm->p)))
+			return -EFAULT;
+
+		if (bprm->p < len) 
+			return -E2BIG; 
+
+		bprm->p -= len;
+
+		pos = bprm->p;
+		while (len > 0) {
+			char *kaddr;
+			int i, new, err;
+			struct page *page;
+			int offset, bytes_to_copy;
+
+			offset = pos % PAGE_SIZE;
+			i = pos/PAGE_SIZE;
+			page = bprm->page[i];
+			new = 0;
+			if (!page) {
+				page = alloc_page(GFP_HIGHUSER);
+				bprm->page[i] = page;
+				if (!page)
+					return -ENOMEM;
+				new = 1;
+			}
+			kaddr = (char *)kmap(page);
+
+			if (new && offset)
+				memset(kaddr, 0, offset);
+			bytes_to_copy = PAGE_SIZE - offset;
+			if (bytes_to_copy > len) {
+				bytes_to_copy = len;
+				if (new)
+					memset(kaddr+offset+len, 0, PAGE_SIZE-offset-len);
+			}
+			err = copy_from_user(kaddr + offset, (char *)A(str), bytes_to_copy);
+			flush_dcache_page(page);
+			flush_page_to_ram(page);
+			kunmap(page);
+
+			if (err)
+				return -EFAULT; 
+
+			pos += bytes_to_copy;
+			str += bytes_to_copy;
+			len -= bytes_to_copy;
+		}
+	}
+	return 0;
+}
+
+/*
+ * do_execve32() is mostly a copy of do_execve(), with the exception
+ * that it processes 32 bit argv and envp pointers.
+ */
+
+static inline int 
+do_execve32(char * filename, u32 * argv, u32 * envp, struct pt_regs * regs)
+{
+	struct linux_binprm bprm;
+	struct file *file;
+	int retval;
+	int i;
+
+	file = open_exec(filename);
+
+	retval = PTR_ERR(file);
+	if (IS_ERR(file))
+		return retval;
+
+	bprm.p = PAGE_SIZE*MAX_ARG_PAGES-sizeof(void *);
+	memset(bprm.page, 0, MAX_ARG_PAGES*sizeof(bprm.page[0]));
+
+	DBG(("do_execve32(%s, %p, %p, %p)\n", filename, argv, envp, regs));
+
+	bprm.file = file;
+	bprm.filename = filename;
+	bprm.sh_bang = 0;
+	bprm.loader = 0;
+	bprm.exec = 0;
+
+	bprm.mm = mm_alloc();
+	retval = -ENOMEM;
+	if (!bprm.mm)
+		goto out_file;
+
+	retval = init_new_context(current, bprm.mm);
+	if (retval < 0)
+		goto out_mm;
+
+	if ((bprm.argc = count32(argv, bprm.p / sizeof(u32))) < 0) 
+		goto out_mm;
+
+	if ((bprm.envc = count32(envp, bprm.p / sizeof(u32))) < 0) 
+		goto out_mm;
+
+	retval = prepare_binprm(&bprm);
+	if (retval < 0)
+		goto out;
+	
+	retval = copy_strings_kernel(1, &bprm.filename, &bprm);
+	if (retval < 0)
+		goto out;
+
+	bprm.exec = bprm.p;
+	retval = copy_strings32(bprm.envc, envp, &bprm);
+	if (retval < 0)
+		goto out;
+
+	retval = copy_strings32(bprm.argc, argv, &bprm);
+	if (retval < 0)
+		goto out;
+
+	retval = search_binary_handler(&bprm,regs);
+	if (retval >= 0)
+		/* execve success */
+		return retval;
+
+out:
+	/* Something went wrong, return the inode and free the argument pages*/
+	for (i = 0; i < MAX_ARG_PAGES; i++) {
+		struct page *page = bprm.page[i];
+		if (page)
+			__free_page(page);
+	}
+
+out_mm:
+	mmdrop(bprm.mm);
+
+out_file:
+	if (bprm.file) {
+		allow_write_access(bprm.file);
+		fput(bprm.file);
+	}
+
+	return retval;
+}
+
+/*
+ * sys32_execve() executes a new program.
+ */
+
+asmlinkage int sys32_execve(struct pt_regs *regs)
+{
+	int error;
+	char *filename;
+
+	DBG(("sys32_execve(%p) r26 = 0x%lx\n", regs, regs->gr[26]));
+	filename = getname((char *) regs->gr[26]);
+	error = PTR_ERR(filename);
+	if (IS_ERR(filename))
+		goto out;
+	error = do_execve32(filename, (u32 *) regs->gr[25],
+		(u32 *) regs->gr[24], regs);
+	if (error == 0)
+		current->ptrace &= ~PT_DTRACE;
+	putname(filename);
+out:
+
+	return error;
+}
+
+asmlinkage long sys32_unimplemented(int r26, int r25, int r24, int r23,
+	int r22, int r21, int r20)
+{
+    printk(KERN_ERR "%s(%d): Unimplemented 32 on 64 syscall #%d!\n", 
+    	current->comm, current->pid, r20);
+    return -ENOSYS;
+}
+
+/* 32-bit user apps use struct statfs which uses 'long's */
+struct statfs32 {
+	__s32 f_type;
+	__s32 f_bsize;
+	__s32 f_blocks;
+	__s32 f_bfree;
+	__s32 f_bavail;
+	__s32 f_files;
+	__s32 f_ffree;
+	__kernel_fsid_t f_fsid;
+	__s32 f_namelen;
+	__s32 f_spare[6];
+};
+
+/* convert statfs struct to statfs32 struct and copy result to user */
+static unsigned long statfs32_to_user(struct statfs32 *ust32, struct statfs *st)
+{
+    struct statfs32 st32;
+#undef CP
+#define CP(a) st32.a = st->a
+    CP(f_type);
+    CP(f_bsize);
+    CP(f_blocks);
+    CP(f_bfree);
+    CP(f_bavail);
+    CP(f_files);
+    CP(f_ffree);
+    CP(f_fsid);
+    CP(f_namelen);
+    return copy_to_user(ust32, &st32, sizeof st32);
+}
+
+/* The following statfs calls are copies of code from linux/fs/open.c and
+ * should be checked against those from time to time */
+asmlinkage long sys32_statfs(const char * path, struct statfs32 * buf)
+{
+	struct nameidata nd;
+	int error;
+
+	error = user_path_walk(path, &nd);
+	if (!error) {
+		struct statfs tmp;
+		error = vfs_statfs(nd.dentry->d_inode->i_sb, &tmp);
+		if (!error && statfs32_to_user(buf, &tmp))
+			error = -EFAULT;
+		path_release(&nd);
+	}
+	return error;
+}
+
+asmlinkage long sys32_fstatfs(unsigned int fd, struct statfs32 * buf)
+{
+	struct file * file;
+	struct statfs tmp;
+	int error;
+
+	error = -EBADF;
+	file = fget(fd);
+	if (!file)
+		goto out;
+	error = vfs_statfs(file->f_dentry->d_inode->i_sb, &tmp);
+	if (!error && statfs32_to_user(buf, &tmp))
+		error = -EFAULT;
+	fput(file);
+out:
+	return error;
+}
+
+/* These may not work without my local types changes, but I wanted the
+ * code available in case it's useful to others. -PB
+ */
+
+/* from utime.h */
+struct utimbuf32 {
+	__kernel_time_t32 actime;
+	__kernel_time_t32 modtime;
+};
+
+asmlinkage long sys32_utime(char *filename, struct utimbuf32 *times)
+{
+    struct utimbuf32 times32;
+    struct utimbuf times64;
+    extern long sys_utime(char *filename, struct utimbuf *times);
+    char *fname;
+    long ret;
+
+    if (!times)
+    	return sys_utime(filename, NULL);
+
+    /* get the 32-bit struct from user space */
+    if (copy_from_user(&times32, times, sizeof times32))
+    	return -EFAULT;
+
+    /* convert it into the 64-bit one */
+    times64.actime = times32.actime;
+    times64.modtime = times32.modtime;
+
+    /* grab the file name */
+    fname = getname(filename);
+
+    KERNEL_SYSCALL(ret, sys_utime, fname, &times64);
+
+    /* free the file name */
+    putname(fname);
+
+    return ret;
+}
+
+struct tms32 {
+	__kernel_clock_t32 tms_utime;
+	__kernel_clock_t32 tms_stime;
+	__kernel_clock_t32 tms_cutime;
+	__kernel_clock_t32 tms_cstime;
+};
+                                
+asmlinkage long sys32_times(struct tms32 *tbuf)
+{
+	struct tms t;
+	long ret;
+	extern asmlinkage long sys_times(struct tms * tbuf);
+int err;
+	
+	KERNEL_SYSCALL(ret, sys_times, tbuf ? &t : NULL);
+	if (tbuf) {
+		err = put_user (t.tms_utime, &tbuf->tms_utime);
+		err |= __put_user (t.tms_stime, &tbuf->tms_stime);
+		err |= __put_user (t.tms_cutime, &tbuf->tms_cutime);
+		err |= __put_user (t.tms_cstime, &tbuf->tms_cstime);
+		if (err)
+			ret = -EFAULT;
+	}
+	return ret;
+}
+
+struct flock32 {
+	short l_type;
+	short l_whence;
+	__kernel_off_t32 l_start;
+	__kernel_off_t32 l_len;
+	__kernel_pid_t32 l_pid;
+};
+
+
+static inline int get_flock(struct flock *kfl, struct flock32 *ufl)
+{
+	int err;
+	
+	err = get_user(kfl->l_type, &ufl->l_type);
+	err |= __get_user(kfl->l_whence, &ufl->l_whence);
+	err |= __get_user(kfl->l_start, &ufl->l_start);
+	err |= __get_user(kfl->l_len, &ufl->l_len);
+	err |= __get_user(kfl->l_pid, &ufl->l_pid);
+	return err;
+}
+
+static inline int put_flock(struct flock *kfl, struct flock32 *ufl)
+{
+	int err;
+	
+	err = __put_user(kfl->l_type, &ufl->l_type);
+	err |= __put_user(kfl->l_whence, &ufl->l_whence);
+	err |= __put_user(kfl->l_start, &ufl->l_start);
+	err |= __put_user(kfl->l_len, &ufl->l_len);
+	err |= __put_user(kfl->l_pid, &ufl->l_pid);
+	return err;
+}
+
+extern asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg);
+
+asmlinkage long sys32_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg)
+{
+	switch (cmd) {
+	case F_GETLK:
+	case F_SETLK:
+	case F_SETLKW:
+		{
+			struct flock f;
+			long ret;
+			
+			if(get_flock(&f, (struct flock32 *)arg))
+				return -EFAULT;
+			KERNEL_SYSCALL(ret, sys_fcntl, fd, cmd, (unsigned long)&f);
+			if (ret) return ret;
+			if (f.l_start >= 0x7fffffffUL ||
+			    f.l_len >= 0x7fffffffUL ||
+			    f.l_start + f.l_len >= 0x7fffffffUL)
+				return -EOVERFLOW;
+			if(put_flock(&f, (struct flock32 *)arg))
+				return -EFAULT;
+			return 0;
+		}
+	default:
+		return sys_fcntl(fd, cmd, (unsigned long)arg);
+	}
+}
+
+#ifdef CONFIG_SYSCTL
+
+struct __sysctl_args32 {
+	u32 name;
+	int nlen;
+	u32 oldval;
+	u32 oldlenp;
+	u32 newval;
+	u32 newlen;
+	u32 __unused[4];
+};
+
+asmlinkage long sys32_sysctl(struct __sysctl_args32 *args)
+{
+	struct __sysctl_args32 tmp;
+	int error;
+	unsigned int oldlen32;
+	size_t oldlen, *oldlenp = NULL;
+	unsigned long addr = (((long)&args->__unused[0]) + 7) & ~7;
+	extern int do_sysctl(int *name, int nlen, void *oldval, size_t *oldlenp,
+	       void *newval, size_t newlen);
+
+	DBG(("sysctl32(%p)\n", args));
+
+	if (copy_from_user(&tmp, args, sizeof(tmp)))
+		return -EFAULT;
+
+	if (tmp.oldval && tmp.oldlenp) {
+		/* Duh, this is ugly and might not work if sysctl_args
+		   is in read-only memory, but do_sysctl does indirectly
+		   a lot of uaccess in both directions and we'd have to
+		   basically copy the whole sysctl.c here, and
+		   glibc's __sysctl uses rw memory for the structure
+		   anyway.  */
+		/* a possibly better hack than this, which will avoid the
+		 * problem if the struct is read only, is to push the
+		 * 'oldlen' value out to the user's stack instead. -PB
+		 */
+		if (get_user(oldlen32, (u32 *)(u64)tmp.oldlenp))
+			return -EFAULT;
+		oldlen = oldlen32;
+		if (put_user(oldlen, (size_t *)addr))
+			return -EFAULT;
+		oldlenp = (size_t *)addr;
+	}
+
+	lock_kernel();
+	error = do_sysctl((int *)(u64)tmp.name, tmp.nlen, (void *)(u64)tmp.oldval,
+			  oldlenp, (void *)(u64)tmp.newval, tmp.newlen);
+	unlock_kernel();
+	if (oldlenp) {
+		if (!error) {
+			if (get_user(oldlen, (size_t *)addr)) {
+				error = -EFAULT;
+			} else {
+				oldlen32 = oldlen;
+				if (put_user(oldlen32, (u32 *)(u64)tmp.oldlenp))
+					error = -EFAULT;
+			}
+		}
+		if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)))
+			error = -EFAULT;
+	}
+	return error;
+}
+
+#else /* CONFIG_SYSCTL */
+
+asmlinkage long sys32_sysctl(struct __sysctl_args *args)
+{
+	return -ENOSYS;
+}
+#endif /* CONFIG_SYSCTL */
+
+struct timespec32 {
+	s32    tv_sec;
+	s32    tv_nsec;
+};
+                
+static int
+put_timespec32(struct timespec32 *u, struct timespec *t)
+{
+	struct timespec32 t32;
+	t32.tv_sec = t->tv_sec;
+	t32.tv_nsec = t->tv_nsec;
+	return copy_to_user(u, &t32, sizeof t32);
+}
+
+asmlinkage int sys32_nanosleep(struct timespec32 *rqtp, struct timespec32 *rmtp)
+{
+	struct timespec t;
+	struct timespec32 t32;
+	int ret;
+	extern asmlinkage int sys_nanosleep(struct timespec *rqtp, struct timespec *rmtp);
+	
+	if (copy_from_user(&t32, rqtp, sizeof t32))
+		return -EFAULT;
+	t.tv_sec = t32.tv_sec;
+	t.tv_nsec = t32.tv_nsec;
+
+	DBG(("sys32_nanosleep({%d, %d})\n", t32.tv_sec, t32.tv_nsec));
+
+	KERNEL_SYSCALL(ret, sys_nanosleep, &t, rmtp ? &t : NULL);
+	if (rmtp && ret == -EINTR) {
+		if (put_timespec32(rmtp, &t))
+			return -EFAULT;
+	}
+	return ret;
+}
+
+asmlinkage long sys32_sched_rr_get_interval(pid_t pid,
+	struct timespec32 *interval)
+{
+	struct timespec t;
+	int ret;
+	extern asmlinkage long sys_sched_rr_get_interval(pid_t pid, struct timespec *interval);
+	
+	KERNEL_SYSCALL(ret, sys_sched_rr_get_interval, pid, &t);
+	if (put_timespec32(interval, &t))
+		return -EFAULT;
+	return ret;
+}
+
+typedef __kernel_time_t32 time_t32;
+
+static int
+put_timeval32(struct timeval32 *u, struct timeval *t)
+{
+	struct timeval32 t32;
+	t32.tv_sec = t->tv_sec;
+	t32.tv_usec = t->tv_usec;
+	return copy_to_user(u, &t32, sizeof t32);
+}
+
+static int
+get_timeval32(struct timeval32 *u, struct timeval *t)
+{
+	int err;
+	struct timeval32 t32;
+
+	if ((err = copy_from_user(&t32, u, sizeof t32)) == 0)
+	{
+	    t->tv_sec = t32.tv_sec;
+	    t->tv_usec = t32.tv_usec;
+	}
+	return err;
+}
+
+asmlinkage long sys32_time(time_t32 *tloc)
+{
+    time_t now = CURRENT_TIME;
+    time_t32 now32 = now;
+
+    if (tloc)
+    	if (put_user(now32, tloc))
+		now32 = -EFAULT;
+
+    return now32;
+}
+
+asmlinkage int
+sys32_gettimeofday(struct timeval32 *tv, struct timezone *tz)
+{
+    extern void do_gettimeofday(struct timeval *tv);
+
+    if (tv) {
+	    struct timeval ktv;
+	    do_gettimeofday(&ktv);
+	    if (put_timeval32(tv, &ktv))
+		    return -EFAULT;
+    }
+    if (tz) {
+	    extern struct timezone sys_tz;
+	    if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
+		    return -EFAULT;
+    }
+    return 0;
+}
+
+asmlinkage int
+sys32_settimeofday(struct timeval32 *tv, struct timezone *tz)
+{
+    struct timeval ktv;
+    struct timezone ktz;
+    extern int do_sys_settimeofday(struct timeval *tv, struct timezone *tz);
+
+    if (tv) {
+	    if (get_timeval32(tv, &ktv))
+		    return -EFAULT;
+    }
+    if (tz) {
+	    if (copy_from_user(&ktz, tz, sizeof(ktz)))
+		    return -EFAULT;
+    }
+
+    return do_sys_settimeofday(tv ? &ktv : NULL, tz ? &ktz : NULL);
+}
+
+struct	itimerval32 {
+	struct	timeval32 it_interval;	/* timer interval */
+	struct	timeval32 it_value;	/* current value */
+};
+
+asmlinkage long sys32_getitimer(int which, struct itimerval32 *ov32)
+{
+	int error = -EFAULT;
+	struct itimerval get_buffer;
+	extern int do_getitimer(int which, struct itimerval *value);
+
+	if (ov32) {
+		error = do_getitimer(which, &get_buffer);
+		if (!error) {
+			struct itimerval32 gb32;
+			gb32.it_interval.tv_sec = get_buffer.it_interval.tv_sec;
+			gb32.it_interval.tv_usec = get_buffer.it_interval.tv_usec;
+			gb32.it_value.tv_sec = get_buffer.it_value.tv_sec;
+			gb32.it_value.tv_usec = get_buffer.it_value.tv_usec;
+			if (copy_to_user(ov32, &gb32, sizeof(gb32)))
+				error = -EFAULT; 
+		}
+	}
+	return error;
+}
+
+asmlinkage long sys32_setitimer(int which, struct itimerval32 *v32,
+			      struct itimerval32 *ov32)
+{
+	struct itimerval set_buffer, get_buffer;
+	struct itimerval32 sb32, gb32;
+	extern int do_setitimer(int which, struct itimerval *value, struct itimerval *ov32);
+	int error;
+
+	if (v32) {
+		if(copy_from_user(&sb32, v32, sizeof(sb32)))
+			return -EFAULT;
+
+		set_buffer.it_interval.tv_sec = sb32.it_interval.tv_sec;
+		set_buffer.it_interval.tv_usec = sb32.it_interval.tv_usec;
+		set_buffer.it_value.tv_sec = sb32.it_value.tv_sec;
+		set_buffer.it_value.tv_usec = sb32.it_value.tv_usec;
+	} else
+		memset((char *) &set_buffer, 0, sizeof(set_buffer));
+
+	error = do_setitimer(which, &set_buffer, ov32 ? &get_buffer : 0);
+	if (error || !ov32)
+		return error;
+
+	gb32.it_interval.tv_sec = get_buffer.it_interval.tv_sec;
+	gb32.it_interval.tv_usec = get_buffer.it_interval.tv_usec;
+	gb32.it_value.tv_sec = get_buffer.it_value.tv_sec;
+	gb32.it_value.tv_usec = get_buffer.it_value.tv_usec;
+	if (copy_to_user(ov32, &gb32, sizeof(gb32)))
+		return -EFAULT; 
+	return 0;
+}
+
+struct rusage32 {
+        struct timeval32 ru_utime;
+        struct timeval32 ru_stime;
+        int    ru_maxrss;
+        int    ru_ixrss;
+        int    ru_idrss;
+        int    ru_isrss;
+        int    ru_minflt;
+        int    ru_majflt;
+        int    ru_nswap;
+        int    ru_inblock;
+        int    ru_oublock;
+        int    ru_msgsnd; 
+        int    ru_msgrcv; 
+        int    ru_nsignals;
+        int    ru_nvcsw;
+        int    ru_nivcsw;
+};
+
+static int
+put_rusage32(struct rusage32 *ru32p, struct rusage *r)
+{
+	struct rusage32 r32;
+#undef CP
+#define CP(t) r32.t = r->t;
+	CP(ru_utime.tv_sec); CP(ru_utime.tv_usec);
+	CP(ru_stime.tv_sec); CP(ru_stime.tv_usec);
+	CP(ru_maxrss);
+	CP(ru_ixrss);
+	CP(ru_idrss);
+	CP(ru_isrss);
+	CP(ru_minflt);
+	CP(ru_majflt);
+	CP(ru_nswap);
+	CP(ru_inblock);
+	CP(ru_oublock);
+	CP(ru_msgsnd);
+	CP(ru_msgrcv);
+	CP(ru_nsignals);
+	CP(ru_nvcsw);
+	CP(ru_nivcsw);
+	return copy_to_user(ru32p, &r32, sizeof r32);
+}
+
+asmlinkage int
+sys32_getrusage(int who, struct rusage32 *ru)
+{
+	struct rusage r;
+	int ret;
+	extern asmlinkage int sys_getrusage(int who, struct rusage *ru);
+		
+	KERNEL_SYSCALL(ret, sys_getrusage, who, &r);
+	if (put_rusage32(ru, &r)) return -EFAULT;
+	return ret;
+}
+
+asmlinkage int
+sys32_wait4(__kernel_pid_t32 pid, unsigned int * stat_addr, int options,
+	    struct rusage32 * ru)
+{
+	if (!ru)
+		return sys_wait4(pid, stat_addr, options, NULL);
+	else {
+		struct rusage r;
+		int ret;
+		unsigned int status;
+	
+		KERNEL_SYSCALL(ret, sys_wait4, pid, stat_addr ? &status : NULL, options, &r);
+		if (put_rusage32(ru, &r)) return -EFAULT;
+		if (stat_addr && put_user(status, stat_addr))
+			return -EFAULT;
+		return ret;
+	}
+}
+
+struct stat32 {
+	__kernel_dev_t32		st_dev;		/* dev_t is 32 bits on parisc */
+	__kernel_ino_t32		st_ino;		/* 32 bits */
+	__kernel_mode_t32	st_mode;	/* 16 bits */
+	__kernel_nlink_t32		st_nlink;	/* 16 bits */
+	unsigned short	st_reserved1;	/* old st_uid */
+	unsigned short	st_reserved2;	/* old st_gid */
+	__kernel_dev_t32		st_rdev;
+	__kernel_off_t32		st_size;
+	__kernel_time_t32	st_atime;
+	unsigned int	st_spare1;
+	__kernel_time_t32	st_mtime;
+	unsigned int	st_spare2;
+	__kernel_time_t32	st_ctime;
+	unsigned int	st_spare3;
+	int		st_blksize;
+	int		st_blocks;
+	unsigned int	__unused1;	/* ACL stuff */
+	__kernel_dev_t32		__unused2;	/* network */
+	__kernel_ino_t32		__unused3;	/* network */
+	unsigned int	__unused4;	/* cnodes */
+	unsigned short	__unused5;	/* netsite */
+	short		st_fstype;
+	__kernel_dev_t32		st_realdev;
+	unsigned short	st_basemode;
+	unsigned short	st_spareshort;
+	__kernel_uid_t32		st_uid;
+	__kernel_gid_t32		st_gid;
+	unsigned int	st_spare4[3];
+};
+
+static int cp_new_stat32(struct kstat *stat, struct stat32 *statbuf)
+{
+	int err;
+
+	err  = put_user(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(0, &statbuf->st_reserved1);
+	err |= put_user(0, &statbuf->st_reserved2);
+	err |= put_user(stat->rdev, &statbuf->st_rdev);
+	if (stat->size > MAX_NON_LFS)
+		return -EOVERFLOW;
+	err |= put_user(stat->size, &statbuf->st_size);
+	err |= put_user(stat->atime, &statbuf->st_atime);
+	err |= put_user(0, &statbuf->st_spare1);
+	err |= put_user(stat->mtime, &statbuf->st_mtime);
+	err |= put_user(0, &statbuf->st_spare2);
+	err |= put_user(stat->ctime, &statbuf->st_ctime);
+	err |= put_user(0, &statbuf->st_spare3);
+	err |= put_user(stat->blksize, &statbuf->st_blksize);
+	err |= put_user(stat->blocks, &statbuf->st_blocks);
+	err |= put_user(0, &statbuf->__unused1);
+	err |= put_user(0, &statbuf->__unused2);
+	err |= put_user(0, &statbuf->__unused3);
+	err |= put_user(0, &statbuf->__unused4);
+	err |= put_user(0, &statbuf->__unused5);
+	err |= put_user(0, &statbuf->st_fstype); /* not avail */
+	err |= put_user(0, &statbuf->st_realdev); /* not avail */
+	err |= put_user(0, &statbuf->st_basemode); /* not avail */
+	err |= put_user(0, &statbuf->st_spareshort);
+	err |= put_user(stat->uid, &statbuf->st_uid);
+	err |= put_user(stat->gid, &statbuf->st_gid);
+	err |= put_user(0, &statbuf->st_spare4[0]);
+	err |= put_user(0, &statbuf->st_spare4[1]);
+	err |= put_user(0, &statbuf->st_spare4[2]);
+
+	return err;
+}
+
+asmlinkage long sys32_newstat(char * filename, struct stat32 *statbuf)
+{
+	struct kstat stat;
+	int error = vfs_stat(filename, &stat);
+
+	if (!error) 
+		error = cp_new_stat32(&stat, statbuf);
+	
+	return error;
+}
+
+asmlinkage long sys32_newlstat(char * filename, struct stat32 *statbuf)
+{
+	struct kstat stat;
+	int error = vfs_lstat(filename, &stat);
+
+	if (!error)
+		error = cp_new_stat32(&stat, statbuf);
+
+	return error;
+}
+
+asmlinkage long sys32_newfstat(unsigned int fd, struct stat32 *statbuf)
+{
+	struct kstat stat;
+	int error = vfs_fstat(fd, &stat);
+
+	if (!error)
+		error = cp_new_stat32(&stat, statbuf);
+
+	return error;
+}
+
+struct linux32_dirent {
+	u32	d_ino;
+	__kernel_off_t32	d_off;
+	u16	d_reclen;
+	char	d_name[1];
+};
+
+struct old_linux32_dirent {
+	u32	d_ino;
+	u32	d_offset;
+	u16	d_namlen;
+	char	d_name[1];
+};
+
+struct getdents32_callback {
+	struct linux32_dirent * current_dir;
+	struct linux32_dirent * previous;
+	int count;
+	int error;
+};
+
+struct readdir32_callback {
+	struct old_linux32_dirent * dirent;
+	int count;
+};
+
+#define ROUND_UP(x,a)	((__typeof__(x))(((unsigned long)(x) + ((a) - 1)) & ~((a) - 1)))
+#define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de)))
+static int
+filldir32 (void *__buf, const char *name, int namlen, loff_t offset, ino_t ino,
+	   unsigned int d_type)
+{
+	struct linux32_dirent * dirent;
+	struct getdents32_callback * buf = (struct getdents32_callback *) __buf;
+	int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1, 4);
+
+	buf->error = -EINVAL;	/* only used if we fail.. */
+	if (reclen > buf->count)
+		return -EINVAL;
+	dirent = buf->previous;
+	if (dirent)
+		put_user(offset, &dirent->d_off);
+	dirent = buf->current_dir;
+	buf->previous = dirent;
+	put_user(ino, &dirent->d_ino);
+	put_user(reclen, &dirent->d_reclen);
+	copy_to_user(dirent->d_name, name, namlen);
+	put_user(0, dirent->d_name + namlen);
+	((char *) dirent) += reclen;
+	buf->current_dir = dirent;
+	buf->count -= reclen;
+	return 0;
+}
+
+asmlinkage long
+sys32_getdents (unsigned int fd, void * dirent, unsigned int count)
+{
+	struct file * file;
+	struct linux32_dirent * lastdirent;
+	struct getdents32_callback buf;
+	int error;
+
+	error = -EBADF;
+	file = fget(fd);
+	if (!file)
+		goto out;
+
+	buf.current_dir = (struct linux32_dirent *) dirent;
+	buf.previous = NULL;
+	buf.count = count;
+	buf.error = 0;
+
+	error = vfs_readdir(file, filldir32, &buf);
+	if (error < 0)
+		goto out_putf;
+	error = buf.error;
+	lastdirent = buf.previous;
+	if (lastdirent) {
+		put_user(file->f_pos, &lastdirent->d_off);
+		error = count - buf.count;
+	}
+
+out_putf:
+	fput(file);
+out:
+	return error;
+}
+
+static int
+fillonedir32 (void * __buf, const char * name, int namlen, loff_t offset, ino_t ino,
+	      unsigned int d_type)
+{
+	struct readdir32_callback * buf = (struct readdir32_callback *) __buf;
+	struct old_linux32_dirent * dirent;
+
+	if (buf->count)
+		return -EINVAL;
+	buf->count++;
+	dirent = buf->dirent;
+	put_user(ino, &dirent->d_ino);
+	put_user(offset, &dirent->d_offset);
+	put_user(namlen, &dirent->d_namlen);
+	copy_to_user(dirent->d_name, name, namlen);
+	put_user(0, dirent->d_name + namlen);
+	return 0;
+}
+
+asmlinkage long
+sys32_readdir (unsigned int fd, void * dirent, unsigned int count)
+{
+	int error;
+	struct file * file;
+	struct readdir32_callback buf;
+
+	error = -EBADF;
+	file = fget(fd);
+	if (!file)
+		goto out;
+
+	buf.count = 0;
+	buf.dirent = dirent;
+
+	error = vfs_readdir(file, fillonedir32, &buf);
+	if (error >= 0)
+		error = buf.count;
+	fput(file);
+out:
+	return error;
+}
+
+struct rlimit32 {
+	__u32	rlim_cur;
+	__u32	rlim_max;
+};
+
+#define RLIM32_INFINITY 0xffffffff
+
+asmlinkage long sys32_getrlimit(unsigned int resource, struct rlimit32 *rlim)
+{
+	struct rlimit32 rlim32;
+	struct rlimit *rlimip;
+
+	if (resource >= RLIM_NLIMITS)
+		return -EINVAL;
+	rlimip = current->rlim + resource;
+	if (rlimip->rlim_cur >= RLIM32_INFINITY) {
+		rlim32.rlim_cur = RLIM32_INFINITY;
+	} else {
+		rlim32.rlim_cur = rlimip->rlim_cur;
+	}
+	if (rlimip->rlim_max >= RLIM32_INFINITY) {
+		rlim32.rlim_max = RLIM32_INFINITY;
+	} else {
+		rlim32.rlim_max = rlimip->rlim_max;
+	}
+	return copy_to_user(rlim, &rlim32, sizeof (struct rlimit32));
+}
+
+asmlinkage long sys32_setrlimit(unsigned int resource, struct rlimit32 *rlim)
+{
+	struct rlimit32 rlim32;
+	struct rlimit new_rlim, *old_rlim;
+
+	if (resource >= RLIM_NLIMITS)
+		return -EINVAL;
+	if (copy_from_user(&rlim32, rlim, sizeof(rlim)))
+		return -EFAULT;
+	if (rlim32.rlim_cur == RLIM32_INFINITY) {
+		new_rlim.rlim_cur = RLIM_INFINITY;
+	} else {
+		new_rlim.rlim_cur = rlim32.rlim_cur;
+	}
+	if (rlim32.rlim_max == RLIM32_INFINITY) {
+		new_rlim.rlim_max = RLIM_INFINITY;
+	} else {
+		new_rlim.rlim_max = rlim32.rlim_max;
+	}
+
+	old_rlim = current->rlim + resource;
+	if (((new_rlim.rlim_cur > old_rlim->rlim_max) ||
+	     (new_rlim.rlim_max > old_rlim->rlim_max)) &&
+	    !capable(CAP_SYS_RESOURCE))
+		return -EPERM;
+	if (resource == RLIMIT_NOFILE) {
+		if (new_rlim.rlim_cur > NR_OPEN || new_rlim.rlim_max > NR_OPEN)
+			return -EPERM;
+	}
+	if (resource == RLIMIT_STACK) {
+		if (new_rlim.rlim_max > 1024 * 1024 * 1024) {
+			new_rlim.rlim_max = 1024 * 1024 * 1024;
+		}
+		new_rlim.rlim_max = PAGE_ALIGN(new_rlim.rlim_max);
+	}
+	
+	*old_rlim = new_rlim;
+	return 0;
+}
+
+static int copy_mount_stuff_to_kernel(const void *user, unsigned long *kernel)
+{
+	int i;
+	unsigned long page;
+	struct vm_area_struct *vma;
+
+	*kernel = 0;
+	if(!user)
+		return 0;
+	vma = find_vma(current->mm, (unsigned long)user);
+	if(!vma || (unsigned long)user < vma->vm_start)
+		return -EFAULT;
+	if(!(vma->vm_flags & VM_READ))
+		return -EFAULT;
+	i = vma->vm_end - (unsigned long) user;
+	if(PAGE_SIZE <= (unsigned long) i)
+		i = PAGE_SIZE - 1;
+	if(!(page = __get_free_page(GFP_KERNEL)))
+		return -ENOMEM;
+	if(copy_from_user((void *) page, user, i)) {
+		free_page(page);
+		return -EFAULT;
+	}
+	*kernel = page;
+	return 0;
+}
+
+#define SMBFS_NAME	"smbfs"
+#define NCPFS_NAME	"ncpfs"
+
+asmlinkage int sys32_mount(char *dev_name, char *dir_name, char *type, unsigned long new_flags, u32 data)
+{
+	unsigned long type_page = 0;
+	unsigned long data_page = 0;
+	unsigned long dev_page = 0;
+	unsigned long dir_page = 0;
+	int err, is_smb, is_ncp;
+
+	is_smb = is_ncp = 0;
+
+	err = copy_mount_stuff_to_kernel((const void *)type, &type_page);
+	if (err)
+		goto out;
+
+	if (!type_page) {
+		err = -EINVAL;
+		goto out;
+	}
+
+	is_smb = !strcmp((char *)type_page, SMBFS_NAME);
+	is_ncp = !strcmp((char *)type_page, NCPFS_NAME);
+
+	err = copy_mount_stuff_to_kernel((const void *)(unsigned long)data, &data_page);
+	if (err)
+		goto type_out;
+
+	err = copy_mount_stuff_to_kernel(dev_name, &dev_page);
+	if (err)
+		goto data_out;
+
+	err = copy_mount_stuff_to_kernel(dir_name, &dir_page);
+	if (err)
+		goto dev_out;
+
+	if (!is_smb && !is_ncp) {
+		lock_kernel();
+		err = do_mount((char*)dev_page, (char*)dir_page,
+				(char*)type_page, new_flags, (char*)data_page);
+		unlock_kernel();
+	} else {
+		if (is_ncp)
+			panic("NCP mounts not yet supported 32/64 parisc");
+			/* do_ncp_super_data_conv((void *)data_page); */
+		else {
+			panic("SMB mounts not yet supported 32/64 parisc");
+			/* do_smb_super_data_conv((void *)data_page); */
+		}
+
+		lock_kernel();
+		err = do_mount((char*)dev_page, (char*)dir_page,
+				(char*)type_page, new_flags, (char*)data_page);
+		unlock_kernel();
+	}
+	free_page(dir_page);
+
+dev_out:
+	free_page(dev_page);
+
+data_out:
+	free_page(data_page);
+
+type_out:
+	free_page(type_page);
+
+out:
+	return err;
+}
+
+
+#ifdef CONFIG_MODULES
+
+struct module_info32 {
+	u32 addr;
+	u32 size;
+	u32 flags;
+	s32 usecount;
+};
+
+/* Query various bits about modules.  */
+
+static inline long
+get_mod_name(const char *user_name, char **buf)
+{
+	unsigned long page;
+	long retval;
+
+	if ((unsigned long)user_name >= TASK_SIZE
+	    && !segment_eq(get_fs (), KERNEL_DS))
+		return -EFAULT;
+
+	page = __get_free_page(GFP_KERNEL);
+	if (!page)
+		return -ENOMEM;
+
+	retval = strncpy_from_user((char *)page, user_name, PAGE_SIZE);
+	if (retval > 0) {
+		if (retval < PAGE_SIZE) {
+			*buf = (char *)page;
+			return retval;
+		}
+		retval = -ENAMETOOLONG;
+	} else if (!retval)
+		retval = -EINVAL;
+
+	free_page(page);
+	return retval;
+}
+
+static inline void
+put_mod_name(char *buf)
+{
+	free_page((unsigned long)buf);
+}
+
+static __inline__ struct module *find_module(const char *name)
+{
+	struct module *mod;
+
+	for (mod = module_list; mod ; mod = mod->next) {
+		if (mod->flags & MOD_DELETED)
+			continue;
+		if (!strcmp(mod->name, name))
+			break;
+	}
+
+	return mod;
+}
+
+static int
+qm_modules(char *buf, size_t bufsize, __kernel_size_t32 *ret)
+{
+	struct module *mod;
+	size_t nmod, space, len;
+
+	nmod = space = 0;
+
+	for (mod = module_list; mod->next != NULL; mod = mod->next, ++nmod) {
+		len = strlen(mod->name)+1;
+		if (len > bufsize)
+			goto calc_space_needed;
+		if (copy_to_user(buf, mod->name, len))
+			return -EFAULT;
+		buf += len;
+		bufsize -= len;
+		space += len;
+	}
+
+	if (put_user(nmod, ret))
+		return -EFAULT;
+	else
+		return 0;
+
+calc_space_needed:
+	space += len;
+	while ((mod = mod->next)->next != NULL)
+		space += strlen(mod->name)+1;
+
+	if (put_user(space, ret))
+		return -EFAULT;
+	else
+		return -ENOSPC;
+}
+
+static int
+qm_deps(struct module *mod, char *buf, size_t bufsize, __kernel_size_t32 *ret)
+{
+	size_t i, space, len;
+
+	if (mod->next == NULL)
+		return -EINVAL;
+	if (!MOD_CAN_QUERY(mod))
+		return put_user(0, ret);
+
+	space = 0;
+	for (i = 0; i < mod->ndeps; ++i) {
+		const char *dep_name = mod->deps[i].dep->name;
+
+		len = strlen(dep_name)+1;
+		if (len > bufsize)
+			goto calc_space_needed;
+		if (copy_to_user(buf, dep_name, len))
+			return -EFAULT;
+		buf += len;
+		bufsize -= len;
+		space += len;
+	}
+
+	return put_user(i, ret);
+
+calc_space_needed:
+	space += len;
+	while (++i < mod->ndeps)
+		space += strlen(mod->deps[i].dep->name)+1;
+
+	if (put_user(space, ret))
+		return -EFAULT;
+	else
+		return -ENOSPC;
+}
+
+static int
+qm_refs(struct module *mod, char *buf, size_t bufsize, __kernel_size_t32 *ret)
+{
+	size_t nrefs, space, len;
+	struct module_ref *ref;
+
+	if (mod->next == NULL)
+		return -EINVAL;
+	if (!MOD_CAN_QUERY(mod))
+		if (put_user(0, ret))
+			return -EFAULT;
+		else
+			return 0;
+
+	space = 0;
+	for (nrefs = 0, ref = mod->refs; ref ; ++nrefs, ref = ref->next_ref) {
+		const char *ref_name = ref->ref->name;
+
+		len = strlen(ref_name)+1;
+		if (len > bufsize)
+			goto calc_space_needed;
+		if (copy_to_user(buf, ref_name, len))
+			return -EFAULT;
+		buf += len;
+		bufsize -= len;
+		space += len;
+	}
+
+	if (put_user(nrefs, ret))
+		return -EFAULT;
+	else
+		return 0;
+
+calc_space_needed:
+	space += len;
+	while ((ref = ref->next_ref) != NULL)
+		space += strlen(ref->ref->name)+1;
+
+	if (put_user(space, ret))
+		return -EFAULT;
+	else
+		return -ENOSPC;
+}
+
+static inline int
+qm_symbols(struct module *mod, char *buf, size_t bufsize, __kernel_size_t32 *ret)
+{
+	size_t i, space, len;
+	struct module_symbol *s;
+	char *strings;
+	unsigned *vals;
+
+	if (!MOD_CAN_QUERY(mod))
+		if (put_user(0, ret))
+			return -EFAULT;
+		else
+			return 0;
+
+	space = mod->nsyms * 2*sizeof(u32);
+
+	i = len = 0;
+	s = mod->syms;
+
+	if (space > bufsize)
+		goto calc_space_needed;
+
+	if (!access_ok(VERIFY_WRITE, buf, space))
+		return -EFAULT;
+
+	bufsize -= space;
+	vals = (unsigned *)buf;
+	strings = buf+space;
+
+	for (; i < mod->nsyms ; ++i, ++s, vals += 2) {
+		len = strlen(s->name)+1;
+		if (len > bufsize)
+			goto calc_space_needed;
+
+		if (copy_to_user(strings, s->name, len)
+		    || __put_user(s->value, vals+0)
+		    || __put_user(space, vals+1))
+			return -EFAULT;
+
+		strings += len;
+		bufsize -= len;
+		space += len;
+	}
+
+	if (put_user(i, ret))
+		return -EFAULT;
+	else
+		return 0;
+
+calc_space_needed:
+	for (; i < mod->nsyms; ++i, ++s)
+		space += strlen(s->name)+1;
+
+	if (put_user(space, ret))
+		return -EFAULT;
+	else
+		return -ENOSPC;
+}
+
+static inline int
+qm_info(struct module *mod, char *buf, size_t bufsize, __kernel_size_t32 *ret)
+{
+	int error = 0;
+
+	if (mod->next == NULL)
+		return -EINVAL;
+
+	if (sizeof(struct module_info32) <= bufsize) {
+		struct module_info32 info;
+		info.addr = (unsigned long)mod;
+		info.size = mod->size;
+		info.flags = mod->flags;
+		info.usecount =
+			((mod_member_present(mod, can_unload)
+			  && mod->can_unload)
+			 ? -1 : atomic_read(&mod->uc.usecount));
+
+		if (copy_to_user(buf, &info, sizeof(struct module_info32)))
+			return -EFAULT;
+	} else
+		error = -ENOSPC;
+
+	if (put_user(sizeof(struct module_info32), ret))
+		return -EFAULT;
+
+	return error;
+}
+
+asmlinkage int sys32_query_module(char *name_user, int which, char *buf, __kernel_size_t32 bufsize, __kernel_size_t32 *ret)
+{
+	struct module *mod;
+	int err;
+
+	lock_kernel();
+	if (name_user == 0) {
+		/* This finds "kernel_module" which is not exported. */
+		for(mod = module_list; mod->next != NULL; mod = mod->next)
+			;
+	} else {
+		long namelen;
+		char *name;
+
+		if ((namelen = get_mod_name(name_user, &name)) < 0) {
+			err = namelen;
+			goto out;
+		}
+		err = -ENOENT;
+		if (namelen == 0) {
+			/* This finds "kernel_module" which is not exported. */
+			for(mod = module_list; mod->next != NULL; mod = mod->next)
+				;
+		} else if ((mod = find_module(name)) == NULL) {
+			put_mod_name(name);
+			goto out;
+		}
+		put_mod_name(name);
+	}
+
+	switch (which)
+	{
+	case 0:
+		err = 0;
+		break;
+	case QM_MODULES:
+		err = qm_modules(buf, bufsize, ret);
+		break;
+	case QM_DEPS:
+		err = qm_deps(mod, buf, bufsize, ret);
+		break;
+	case QM_REFS:
+		err = qm_refs(mod, buf, bufsize, ret);
+		break;
+	case QM_SYMBOLS:
+		err = qm_symbols(mod, buf, bufsize, ret);
+		break;
+	case QM_INFO:
+		err = qm_info(mod, buf, bufsize, ret);
+		break;
+	default:
+		err = -EINVAL;
+		break;
+	}
+out:
+	unlock_kernel();
+	return err;
+}
+
+struct kernel_sym32 {
+	u32 value;
+	char name[60];
+};
+		 
+extern asmlinkage int sys_get_kernel_syms(struct kernel_sym *table);
+
+asmlinkage int sys32_get_kernel_syms(struct kernel_sym32 *table)
+{
+	int len, i;
+	struct kernel_sym *tbl;
+	mm_segment_t old_fs;
+	
+	len = sys_get_kernel_syms(NULL);
+	if (!table) return len;
+	tbl = kmalloc (len * sizeof (struct kernel_sym), GFP_KERNEL);
+	if (!tbl) return -ENOMEM;
+	old_fs = get_fs();
+	set_fs (KERNEL_DS);
+	sys_get_kernel_syms(tbl);
+	set_fs (old_fs);
+	for (i = 0; i < len; i++, table++) {
+		if (put_user (tbl[i].value, &table->value) ||
+		    copy_to_user (table->name, tbl[i].name, 60))
+			break;
+	}
+	kfree (tbl);
+	return i;
+}
+
+#else /* CONFIG_MODULES */
+
+asmlinkage int
+sys32_query_module(const char *name_user, int which, char *buf, size_t bufsize,
+		 size_t *ret)
+{
+	/* Let the program know about the new interface.  Not that
+	   it'll do them much good.  */
+	if (which == 0)
+		return 0;
+
+	return -ENOSYS;
+}
+
+asmlinkage int
+sys32_get_kernel_syms(struct kernel_sym *table)
+{
+	return -ENOSYS;
+}
+
+#endif  /* CONFIG_MODULES */
+
+/* readv/writev stolen from mips64 */
+struct iovec32 { unsigned int iov_base; int iov_len; };
+
+typedef ssize_t (*IO_fn_t)(struct file *, char *, size_t, loff_t *);
+
+static long
+do_readv_writev32(int type, struct file *file, const struct iovec32 *vector,
+		  u32 count)
+{
+	unsigned long tot_len;
+	struct iovec iovstack[UIO_FASTIOV];
+	struct iovec *iov=iovstack, *ivp;
+	struct inode *inode;
+	long retval, i;
+	IO_fn_t fn;
+
+	/* First get the "struct iovec" from user memory and
+	 * verify all the pointers
+	 */
+	if (!count)
+		return 0;
+	if(verify_area(VERIFY_READ, vector, sizeof(struct iovec32)*count))
+		return -EFAULT;
+	if (count > UIO_MAXIOV)
+		return -EINVAL;
+	if (count > UIO_FASTIOV) {
+		iov = kmalloc(count*sizeof(struct iovec), GFP_KERNEL);
+		if (!iov)
+			return -ENOMEM;
+	}
+
+	tot_len = 0;
+	i = count;
+	ivp = iov;
+	while (i > 0) {
+		u32 len;
+		u32 buf;
+
+		__get_user(len, &vector->iov_len);
+		__get_user(buf, &vector->iov_base);
+		tot_len += len;
+		ivp->iov_base = (void *)A(buf);
+		ivp->iov_len = (__kernel_size_t) len;
+		vector++;
+		ivp++;
+		i--;
+	}
+
+	inode = file->f_dentry->d_inode;
+	/* VERIFY_WRITE actually means a read, as we write to user space */
+	retval = locks_verify_area((type == VERIFY_WRITE
+				    ? FLOCK_VERIFY_READ : FLOCK_VERIFY_WRITE),
+				   inode, file, file->f_pos, tot_len);
+	if (retval) {
+		if (iov != iovstack)
+			kfree(iov);
+		return retval;
+	}
+
+	/* Then do the actual IO.  Note that sockets need to be handled
+	 * specially as they have atomicity guarantees and can handle
+	 * iovec's natively
+	 */
+	if (inode->i_sock) {
+		int err;
+		err = sock_readv_writev(type, inode, file, iov, count, tot_len);
+		if (iov != iovstack)
+			kfree(iov);
+		return err;
+	}
+
+	if (!file->f_op) {
+		if (iov != iovstack)
+			kfree(iov);
+		return -EINVAL;
+	}
+	/* VERIFY_WRITE actually means a read, as we write to user space */
+	fn = file->f_op->read;
+	if (type == VERIFY_READ)
+		fn = (IO_fn_t) file->f_op->write;		
+	ivp = iov;
+	while (count > 0) {
+		void * base;
+		int len, nr;
+
+		base = ivp->iov_base;
+		len = ivp->iov_len;
+		ivp++;
+		count--;
+		nr = fn(file, base, len, &file->f_pos);
+		if (nr < 0) {
+			if (retval)
+				break;
+			retval = nr;
+			break;
+		}
+		retval += nr;
+		if (nr != len)
+			break;
+	}
+	if (iov != iovstack)
+		kfree(iov);
+
+	return retval;
+}
+
+asmlinkage long
+sys32_readv(int fd, struct iovec32 *vector, u32 count)
+{
+	struct file *file;
+	ssize_t ret;
+
+	ret = -EBADF;
+	file = fget(fd);
+	if (!file)
+		goto bad_file;
+	if (file->f_op && (file->f_mode & FMODE_READ) &&
+	    (file->f_op->readv || file->f_op->read))
+		ret = do_readv_writev32(VERIFY_WRITE, file, vector, count);
+
+	fput(file);
+
+bad_file:
+	return ret;
+}
+
+asmlinkage long
+sys32_writev(int fd, struct iovec32 *vector, u32 count)
+{
+	struct file *file;
+	ssize_t ret;
+
+	ret = -EBADF;
+	file = fget(fd);
+	if(!file)
+		goto bad_file;
+	if (file->f_op && (file->f_mode & FMODE_WRITE) &&
+	    (file->f_op->writev || file->f_op->write))
+	        ret = do_readv_writev32(VERIFY_READ, file, vector, count);
+	fput(file);
+
+bad_file:
+	return ret;
+}
+
+/********** Borrowed from sparc64 -- hardly reviewed, not tested *****/
+#include <linux/net.h>
+#include <net/scm.h>
+/* XXX This really belongs in some header file... -DaveM */
+#define MAX_SOCK_ADDR	128		/* 108 for Unix domain - 
+					   16 for IP, 16 for IPX,
+					   24 for IPv6,
+					   about 80 for AX.25 */
+
+extern struct socket *sockfd_lookup(int fd, int *err);
+
+struct msghdr32 {
+        u32               msg_name;
+        int               msg_namelen;
+        u32               msg_iov;
+        __kernel_size_t32 msg_iovlen;
+        u32               msg_control;
+        __kernel_size_t32 msg_controllen;
+        unsigned          msg_flags;
+};
+
+struct cmsghdr32 {
+        __kernel_size_t32 cmsg_len;
+        int               cmsg_level;
+        int               cmsg_type;
+};
+
+/* Bleech... */
+#define __CMSG32_NXTHDR(ctl, len, cmsg, cmsglen) __cmsg32_nxthdr((ctl),(len),(cmsg),(cmsglen))
+#define CMSG32_NXTHDR(mhdr, cmsg, cmsglen) cmsg32_nxthdr((mhdr), (cmsg), (cmsglen))
+
+#define CMSG32_ALIGN(len) ( ((len)+sizeof(int)-1) & ~(sizeof(int)-1) )
+
+#define CMSG32_DATA(cmsg)	((void *)((char *)(cmsg) + CMSG32_ALIGN(sizeof(struct cmsghdr32))))
+#define CMSG32_SPACE(len) (CMSG32_ALIGN(sizeof(struct cmsghdr32)) + CMSG32_ALIGN(len))
+#define CMSG32_LEN(len) (CMSG32_ALIGN(sizeof(struct cmsghdr32)) + (len))
+
+#define __CMSG32_FIRSTHDR(ctl,len) ((len) >= sizeof(struct cmsghdr32) ? \
+				    (struct cmsghdr32 *)(ctl) : \
+				    (struct cmsghdr32 *)NULL)
+#define CMSG32_FIRSTHDR(msg)	__CMSG32_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen)
+
+__inline__ struct cmsghdr32 *__cmsg32_nxthdr(void *__ctl, __kernel_size_t __size,
+					      struct cmsghdr32 *__cmsg, int __cmsg_len)
+{
+	struct cmsghdr32 * __ptr;
+
+	__ptr = (struct cmsghdr32 *)(((unsigned char *) __cmsg) +
+				     CMSG32_ALIGN(__cmsg_len));
+	if ((unsigned long)((char*)(__ptr+1) - (char *) __ctl) > __size)
+		return NULL;
+
+	return __ptr;
+}
+
+__inline__ struct cmsghdr32 *cmsg32_nxthdr (struct msghdr *__msg,
+					    struct cmsghdr32 *__cmsg,
+					    int __cmsg_len)
+{
+	return __cmsg32_nxthdr(__msg->msg_control, __msg->msg_controllen,
+			       __cmsg, __cmsg_len);
+}
+
+static inline int iov_from_user32_to_kern(struct iovec *kiov,
+					  struct iovec32 *uiov32,
+					  int niov)
+{
+	int tot_len = 0;
+
+	while(niov > 0) {
+		u32 len, buf;
+
+		if(get_user(len, &uiov32->iov_len) ||
+		   get_user(buf, &uiov32->iov_base)) {
+			tot_len = -EFAULT;
+			break;
+		}
+		tot_len += len;
+		kiov->iov_base = (void *)A(buf);
+		kiov->iov_len = (__kernel_size_t) len;
+		uiov32++;
+		kiov++;
+		niov--;
+	}
+	return tot_len;
+}
+
+static inline int msghdr_from_user32_to_kern(struct msghdr *kmsg,
+					     struct msghdr32 *umsg)
+{
+	u32 tmp1, tmp2, tmp3;
+	int err;
+
+	err = get_user(tmp1, &umsg->msg_name);
+	err |= __get_user(tmp2, &umsg->msg_iov);
+	err |= __get_user(tmp3, &umsg->msg_control);
+	if (err)
+		return -EFAULT;
+
+	kmsg->msg_name = (void *)A(tmp1);
+	kmsg->msg_iov = (struct iovec *)A(tmp2);
+	kmsg->msg_control = (void *)A(tmp3);
+
+	err = get_user(kmsg->msg_namelen, &umsg->msg_namelen);
+	err |= get_user(kmsg->msg_iovlen, &umsg->msg_iovlen);
+	err |= get_user(kmsg->msg_controllen, &umsg->msg_controllen);
+	err |= get_user(kmsg->msg_flags, &umsg->msg_flags);
+	
+	return err;
+}
+
+/* I've named the args so it is easy to tell whose space the pointers are in. */
+static int verify_iovec32(struct msghdr *kern_msg, struct iovec *kern_iov,
+			  char *kern_address, int mode)
+{
+	int tot_len;
+
+	if(kern_msg->msg_namelen) {
+		if(mode==VERIFY_READ) {
+			int err = move_addr_to_kernel(kern_msg->msg_name,
+						      kern_msg->msg_namelen,
+						      kern_address);
+			if(err < 0)
+				return err;
+		}
+		kern_msg->msg_name = kern_address;
+	} else
+		kern_msg->msg_name = NULL;
+
+	if(kern_msg->msg_iovlen > UIO_FASTIOV) {
+		kern_iov = kmalloc(kern_msg->msg_iovlen * sizeof(struct iovec),
+				   GFP_KERNEL);
+		if(!kern_iov)
+			return -ENOMEM;
+	}
+
+	tot_len = iov_from_user32_to_kern(kern_iov,
+					  (struct iovec32 *)kern_msg->msg_iov,
+					  kern_msg->msg_iovlen);
+	if(tot_len >= 0)
+		kern_msg->msg_iov = kern_iov;
+	else if(kern_msg->msg_iovlen > UIO_FASTIOV)
+		kfree(kern_iov);
+
+	return tot_len;
+}
+
+/* There is a lot of hair here because the alignment rules (and
+ * thus placement) of cmsg headers and length are different for
+ * 32-bit apps.  -DaveM
+ */
+static int cmsghdr_from_user32_to_kern(struct msghdr *kmsg,
+				       unsigned char *stackbuf, int stackbuf_size)
+{
+	struct cmsghdr32 *ucmsg;
+	struct cmsghdr *kcmsg, *kcmsg_base;
+	__kernel_size_t32 ucmlen;
+	__kernel_size_t kcmlen, tmp;
+
+	kcmlen = 0;
+	kcmsg_base = kcmsg = (struct cmsghdr *)stackbuf;
+	ucmsg = CMSG32_FIRSTHDR(kmsg);
+	while(ucmsg != NULL) {
+		if(get_user(ucmlen, &ucmsg->cmsg_len))
+			return -EFAULT;
+
+		/* Catch bogons. */
+		if(CMSG32_ALIGN(ucmlen) <
+		   CMSG32_ALIGN(sizeof(struct cmsghdr32)))
+			return -EINVAL;
+		if((unsigned long)(((char *)ucmsg - (char *)kmsg->msg_control)
+				   + ucmlen) > kmsg->msg_controllen)
+			return -EINVAL;
+
+		tmp = ((ucmlen - CMSG32_ALIGN(sizeof(*ucmsg))) +
+		       CMSG_ALIGN(sizeof(struct cmsghdr)));
+		kcmlen += tmp;
+		ucmsg = CMSG32_NXTHDR(kmsg, ucmsg, ucmlen);
+	}
+	if(kcmlen == 0)
+		return -EINVAL;
+
+	/* The kcmlen holds the 64-bit version of the control length.
+	 * It may not be modified as we do not stick it into the kmsg
+	 * until we have successfully copied over all of the data
+	 * from the user.
+	 */
+	if(kcmlen > stackbuf_size)
+		kcmsg_base = kcmsg = kmalloc(kcmlen, GFP_KERNEL);
+	if(kcmsg == NULL)
+		return -ENOBUFS;
+
+	/* Now copy them over neatly. */
+	memset(kcmsg, 0, kcmlen);
+	ucmsg = CMSG32_FIRSTHDR(kmsg);
+	while(ucmsg != NULL) {
+		__get_user(ucmlen, &ucmsg->cmsg_len);
+		tmp = ((ucmlen - CMSG32_ALIGN(sizeof(*ucmsg))) +
+		       CMSG_ALIGN(sizeof(struct cmsghdr)));
+		kcmsg->cmsg_len = tmp;
+		__get_user(kcmsg->cmsg_level, &ucmsg->cmsg_level);
+		__get_user(kcmsg->cmsg_type, &ucmsg->cmsg_type);
+
+		/* Copy over the data. */
+		if(copy_from_user(CMSG_DATA(kcmsg),
+				  CMSG32_DATA(ucmsg),
+				  (ucmlen - CMSG32_ALIGN(sizeof(*ucmsg)))))
+			goto out_free_efault;
+
+		/* Advance. */
+		kcmsg = (struct cmsghdr *)((char *)kcmsg + CMSG_ALIGN(tmp));
+		ucmsg = CMSG32_NXTHDR(kmsg, ucmsg, ucmlen);
+	}
+
+	/* Ok, looks like we made it.  Hook it up and return success. */
+	kmsg->msg_control = kcmsg_base;
+	kmsg->msg_controllen = kcmlen;
+	return 0;
+
+out_free_efault:
+	if(kcmsg_base != (struct cmsghdr *)stackbuf)
+		kfree(kcmsg_base);
+	return -EFAULT;
+}
+
+static void put_cmsg32(struct msghdr *kmsg, int level, int type,
+		       int len, void *data)
+{
+	struct cmsghdr32 *cm = (struct cmsghdr32 *) kmsg->msg_control;
+	struct cmsghdr32 cmhdr;
+	int cmlen = CMSG32_LEN(len);
+
+	if(cm == NULL || kmsg->msg_controllen < sizeof(*cm)) {
+		kmsg->msg_flags |= MSG_CTRUNC;
+		return;
+	}
+
+	if(kmsg->msg_controllen < cmlen) {
+		kmsg->msg_flags |= MSG_CTRUNC;
+		cmlen = kmsg->msg_controllen;
+	}
+	cmhdr.cmsg_level = level;
+	cmhdr.cmsg_type = type;
+	cmhdr.cmsg_len = cmlen;
+
+	if(copy_to_user(cm, &cmhdr, sizeof cmhdr))
+		return;
+	if(copy_to_user(CMSG32_DATA(cm), data, cmlen - sizeof(struct cmsghdr32)))
+		return;
+	cmlen = CMSG32_SPACE(len);
+	kmsg->msg_control += cmlen;
+	kmsg->msg_controllen -= cmlen;
+}
+
+static void scm_detach_fds32(struct msghdr *kmsg, struct scm_cookie *scm)
+{
+	struct cmsghdr32 *cm = (struct cmsghdr32 *) kmsg->msg_control;
+	int fdmax = (kmsg->msg_controllen - sizeof(struct cmsghdr32)) / sizeof(int);
+	int fdnum = scm->fp->count;
+	struct file **fp = scm->fp->fp;
+	int *cmfptr;
+	int err = 0, i;
+
+	if (fdnum < fdmax)
+		fdmax = fdnum;
+
+	for (i = 0, cmfptr = (int *) CMSG32_DATA(cm); i < fdmax; i++, cmfptr++) {
+		int new_fd;
+		err = get_unused_fd();
+		if (err < 0)
+			break;
+		new_fd = err;
+		err = put_user(new_fd, cmfptr);
+		if (err) {
+			put_unused_fd(new_fd);
+			break;
+		}
+		/* Bump the usage count and install the file. */
+		get_file(fp[i]);
+		fd_install(new_fd, fp[i]);
+	}
+
+	if (i > 0) {
+		int cmlen = CMSG32_LEN(i * sizeof(int));
+		if (!err)
+			err = put_user(SOL_SOCKET, &cm->cmsg_level);
+		if (!err)
+			err = put_user(SCM_RIGHTS, &cm->cmsg_type);
+		if (!err)
+			err = put_user(cmlen, &cm->cmsg_len);
+		if (!err) {
+			cmlen = CMSG32_SPACE(i * sizeof(int));
+			kmsg->msg_control += cmlen;
+			kmsg->msg_controllen -= cmlen;
+		}
+	}
+	if (i < fdnum)
+		kmsg->msg_flags |= MSG_CTRUNC;
+
+	/*
+	 * All of the files that fit in the message have had their
+	 * usage counts incremented, so we just free the list.
+	 */
+	__scm_destroy(scm);
+}
+
+/* In these cases we (currently) can just copy to data over verbatim
+ * because all CMSGs created by the kernel have well defined types which
+ * have the same layout in both the 32-bit and 64-bit API.  One must add
+ * some special cased conversions here if we start sending control messages
+ * with incompatible types.
+ *
+ * SCM_RIGHTS and SCM_CREDENTIALS are done by hand in recvmsg32 right after
+ * we do our work.  The remaining cases are:
+ *
+ * SOL_IP	IP_PKTINFO	struct in_pktinfo	32-bit clean
+ *		IP_TTL		int			32-bit clean
+ *		IP_TOS		__u8			32-bit clean
+ *		IP_RECVOPTS	variable length		32-bit clean
+ *		IP_RETOPTS	variable length		32-bit clean
+ *		(these last two are clean because the types are defined
+ *		 by the IPv4 protocol)
+ *		IP_RECVERR	struct sock_extended_err +
+ *				struct sockaddr_in	32-bit clean
+ * SOL_IPV6	IPV6_RECVERR	struct sock_extended_err +
+ *				struct sockaddr_in6	32-bit clean
+ *		IPV6_PKTINFO	struct in6_pktinfo	32-bit clean
+ *		IPV6_HOPLIMIT	int			32-bit clean
+ *		IPV6_FLOWINFO	u32			32-bit clean
+ *		IPV6_HOPOPTS	ipv6 hop exthdr		32-bit clean
+ *		IPV6_DSTOPTS	ipv6 dst exthdr(s)	32-bit clean
+ *		IPV6_RTHDR	ipv6 routing exthdr	32-bit clean
+ *		IPV6_AUTHHDR	ipv6 auth exthdr	32-bit clean
+ */
+static void cmsg32_recvmsg_fixup(struct msghdr *kmsg, unsigned long orig_cmsg_uptr)
+{
+	unsigned char *workbuf, *wp;
+	unsigned long bufsz, space_avail;
+	struct cmsghdr *ucmsg;
+
+	bufsz = ((unsigned long)kmsg->msg_control) - orig_cmsg_uptr;
+	space_avail = kmsg->msg_controllen + bufsz;
+	wp = workbuf = kmalloc(bufsz, GFP_KERNEL);
+	if(workbuf == NULL)
+		goto fail;
+
+	/* To make this more sane we assume the kernel sends back properly
+	 * formatted control messages.  Because of how the kernel will truncate
+	 * the cmsg_len for MSG_TRUNC cases, we need not check that case either.
+	 */
+	ucmsg = (struct cmsghdr *) orig_cmsg_uptr;
+	while(((unsigned long)ucmsg) <=
+	      (((unsigned long)kmsg->msg_control) - sizeof(struct cmsghdr))) {
+		struct cmsghdr32 *kcmsg32 = (struct cmsghdr32 *) wp;
+		int clen64, clen32;
+
+		/* UCMSG is the 64-bit format CMSG entry in user-space.
+		 * KCMSG32 is within the kernel space temporary buffer
+		 * we use to convert into a 32-bit style CMSG.
+		 */
+		__get_user(kcmsg32->cmsg_len, &ucmsg->cmsg_len);
+		__get_user(kcmsg32->cmsg_level, &ucmsg->cmsg_level);
+		__get_user(kcmsg32->cmsg_type, &ucmsg->cmsg_type);
+
+		clen64 = kcmsg32->cmsg_len;
+		copy_from_user(CMSG32_DATA(kcmsg32), CMSG_DATA(ucmsg),
+			       clen64 - CMSG_ALIGN(sizeof(*ucmsg)));
+		clen32 = ((clen64 - CMSG_ALIGN(sizeof(*ucmsg))) +
+			  CMSG32_ALIGN(sizeof(struct cmsghdr32)));
+		kcmsg32->cmsg_len = clen32;
+
+		ucmsg = (struct cmsghdr *) (((char *)ucmsg) + CMSG_ALIGN(clen64));
+		wp = (((char *)kcmsg32) + CMSG32_ALIGN(clen32));
+	}
+
+	/* Copy back fixed up data, and adjust pointers. */
+	bufsz = (wp - workbuf);
+	copy_to_user((void *)orig_cmsg_uptr, workbuf, bufsz);
+
+	kmsg->msg_control = (struct cmsghdr *)
+		(((char *)orig_cmsg_uptr) + bufsz);
+	kmsg->msg_controllen = space_avail - bufsz;
+
+	kfree(workbuf);
+	return;
+
+fail:
+	/* If we leave the 64-bit format CMSG chunks in there,
+	 * the application could get confused and crash.  So to
+	 * ensure greater recovery, we report no CMSGs.
+	 */
+	kmsg->msg_controllen += bufsz;
+	kmsg->msg_control = (void *) orig_cmsg_uptr;
+}
+
+asmlinkage int sys32_sendmsg(int fd, struct msghdr32 *user_msg, unsigned user_flags)
+{
+	struct socket *sock;
+	char address[MAX_SOCK_ADDR];
+	struct iovec iov[UIO_FASTIOV];
+	unsigned char ctl[sizeof(struct cmsghdr) + 20];
+	unsigned char *ctl_buf = ctl;
+	struct msghdr kern_msg;
+	int err, total_len;
+
+	if(msghdr_from_user32_to_kern(&kern_msg, user_msg))
+		return -EFAULT;
+	if(kern_msg.msg_iovlen > UIO_MAXIOV)
+		return -EINVAL;
+	err = verify_iovec32(&kern_msg, iov, address, VERIFY_READ);
+	if (err < 0)
+		goto out;
+	total_len = err;
+
+	if(kern_msg.msg_controllen) {
+		err = cmsghdr_from_user32_to_kern(&kern_msg, ctl, sizeof(ctl));
+		if(err)
+			goto out_freeiov;
+		ctl_buf = kern_msg.msg_control;
+	}
+	kern_msg.msg_flags = user_flags;
+
+	sock = sockfd_lookup(fd, &err);
+	if (sock != NULL) {
+		if (sock->file->f_flags & O_NONBLOCK)
+			kern_msg.msg_flags |= MSG_DONTWAIT;
+		err = sock_sendmsg(sock, &kern_msg, total_len);
+		sockfd_put(sock);
+	}
+
+	/* N.B. Use kfree here, as kern_msg.msg_controllen might change? */
+	if(ctl_buf != ctl)
+		kfree(ctl_buf);
+out_freeiov:
+	if(kern_msg.msg_iov != iov)
+		kfree(kern_msg.msg_iov);
+out:
+	return err;
+}
+
+asmlinkage int sys32_recvmsg(int fd, struct msghdr32 *user_msg, unsigned int user_flags)
+{
+	struct iovec iovstack[UIO_FASTIOV];
+	struct msghdr kern_msg;
+	char addr[MAX_SOCK_ADDR];
+	struct socket *sock;
+	struct iovec *iov = iovstack;
+	struct sockaddr *uaddr;
+	int *uaddr_len;
+	unsigned long cmsg_ptr;
+	int err, total_len, len = 0;
+
+	if(msghdr_from_user32_to_kern(&kern_msg, user_msg))
+		return -EFAULT;
+	if(kern_msg.msg_iovlen > UIO_MAXIOV)
+		return -EINVAL;
+
+	uaddr = kern_msg.msg_name;
+	uaddr_len = &user_msg->msg_namelen;
+	err = verify_iovec32(&kern_msg, iov, addr, VERIFY_WRITE);
+	if (err < 0)
+		goto out;
+	total_len = err;
+
+	cmsg_ptr = (unsigned long) kern_msg.msg_control;
+	kern_msg.msg_flags = 0;
+
+	sock = sockfd_lookup(fd, &err);
+	if (sock != NULL) {
+		struct sock_iocb *si;
+		struct kiocb iocb;
+
+		if (sock->file->f_flags & O_NONBLOCK)
+			user_flags |= MSG_DONTWAIT;
+
+		init_sync_kiocb(&iocb, NULL);
+		si = kiocb_to_siocb(&iocb);
+		si->sock = sock;
+		si->scm = &si->async_scm;
+		si->msg = &kern_msg;
+		si->size = total_len;
+		si->flags = user_flags;
+		memset(si->scm, 0, sizeof(*si->scm));
+
+		err = sock->ops->recvmsg(&iocb, sock, &kern_msg, total_len,
+					 user_flags, si->scm);
+		if (-EIOCBQUEUED == err)
+			err = wait_on_sync_kiocb(&iocb);
+
+		if(err >= 0) {
+			len = err;
+			if(!kern_msg.msg_control) {
+				if(sock->passcred || si->scm->fp)
+					kern_msg.msg_flags |= MSG_CTRUNC;
+				if(si->scm->fp)
+					__scm_destroy(si->scm);
+			} else {
+				/* If recvmsg processing itself placed some
+				 * control messages into user space, it's is
+				 * using 64-bit CMSG processing, so we need
+				 * to fix it up before we tack on more stuff.
+				 */
+				if((unsigned long) kern_msg.msg_control != cmsg_ptr)
+					cmsg32_recvmsg_fixup(&kern_msg, cmsg_ptr);
+
+				/* Wheee... */
+				if(sock->passcred)
+					put_cmsg32(&kern_msg,
+						   SOL_SOCKET, SCM_CREDENTIALS,
+						   sizeof(si->scm->creds),
+						   &si->scm->creds);
+				if(si->scm->fp != NULL)
+					scm_detach_fds32(&kern_msg, si->scm);
+			}
+		}
+		sockfd_put(sock);
+	}
+
+	if(uaddr != NULL && err >= 0)
+		err = move_addr_to_user(addr, kern_msg.msg_namelen, uaddr, uaddr_len);
+	if(cmsg_ptr != 0 && err >= 0) {
+		unsigned long ucmsg_ptr = ((unsigned long)kern_msg.msg_control);
+		__kernel_size_t32 uclen = (__kernel_size_t32) (ucmsg_ptr - cmsg_ptr);
+		err |= __put_user(uclen, &user_msg->msg_controllen);
+	}
+	if(err >= 0)
+		err = __put_user(kern_msg.msg_flags, &user_msg->msg_flags);
+	if(kern_msg.msg_iov != iov)
+		kfree(kern_msg.msg_iov);
+out:
+	if(err < 0)
+		return err;
+	return len;
+}
+
+
+extern asmlinkage int sys_setsockopt(int fd, int level, int optname,
+				     char *optval, int optlen);
+
+static int do_set_attach_filter(int fd, int level, int optname,
+				char *optval, int optlen)
+{
+	struct sock_fprog32 {
+		__u16 len;
+		__u32 filter;
+	} *fprog32 = (struct sock_fprog32 *)optval;
+	struct sock_fprog kfprog;
+	struct sock_filter *kfilter;
+	unsigned int fsize;
+	mm_segment_t old_fs;
+	__u32 uptr;
+	int ret;
+
+	if (get_user(kfprog.len, &fprog32->len) ||
+	    __get_user(uptr, &fprog32->filter))
+		return -EFAULT;
+
+	kfprog.filter = (struct sock_filter *)A(uptr);
+	fsize = kfprog.len * sizeof(struct sock_filter);
+
+	kfilter = (struct sock_filter *)kmalloc(fsize, GFP_KERNEL);
+	if (kfilter == NULL)
+		return -ENOMEM;
+
+	if (copy_from_user(kfilter, kfprog.filter, fsize)) {
+		kfree(kfilter);
+		return -EFAULT;
+	}
+
+	kfprog.filter = kfilter;
+
+	old_fs = get_fs();
+	set_fs(KERNEL_DS);
+	ret = sys_setsockopt(fd, level, optname,
+			     (char *)&kfprog, sizeof(kfprog));
+	set_fs(old_fs);
+
+	kfree(kfilter);
+
+	return ret;
+}
+
+static int do_set_icmpv6_filter(int fd, int level, int optname,
+				char *optval, int optlen)
+{
+	struct icmp6_filter kfilter;
+	mm_segment_t old_fs;
+	int ret, i;
+
+	if (copy_from_user(&kfilter, optval, sizeof(kfilter)))
+		return -EFAULT;
+
+
+	for (i = 0; i < 8; i += 2) {
+		u32 tmp = kfilter.data[i];
+
+		kfilter.data[i] = kfilter.data[i + 1];
+		kfilter.data[i + 1] = tmp;
+	}
+
+	old_fs = get_fs();
+	set_fs(KERNEL_DS);
+	ret = sys_setsockopt(fd, level, optname,
+			     (char *) &kfilter, sizeof(kfilter));
+	set_fs(old_fs);
+
+	return ret;
+}
+
+
+static int do_ipv4_set_replace(int fd, int level, int optname,
+				char *optval, int optlen)
+#if 1
+/* Fields happen to be padded such that this works.
+** Don't need to change iptables.h:struct ipt_replace
+*/
+{
+	struct ipt_replace *repl = (struct ipt_replace *) optval;
+	unsigned long ptr64;
+	unsigned int ptr32;
+	int ret;
+
+	if (copy_from_user(&ptr32, &repl->counters, sizeof(ptr32)))
+		return -EFAULT;
+	ptr64 = (unsigned long) ptr32;
+	if (copy_to_user(&repl->counters, &ptr64, sizeof(ptr64)))
+		return -EFAULT;
+
+	ret = sys_setsockopt(fd, level, optname, (char *) optval, optlen);
+
+	/* Restore 32-bit ptr */
+	if (copy_to_user(&repl->counters, &ptr32, sizeof(ptr32)))
+		return -EFAULT;
+
+	return ret;
+}
+#else
+/* This version tries to "do it right". ie allocate kernel buffers for
+** everything and copy data in/out. Way too complicated.
+** NOT TESTED for correctness!
+*/
+{
+	struct ipt_replace  *kern_repl;
+	struct ipt_counters *kern_counters;
+	unsigned int user_counters;
+	mm_segment_t old_fs;
+	int ret = 0;
+
+	kern_repl = (struct ipt_replace *) kmalloc(optlen+8, GFP_KERNEL);
+	if (!kern_repl)
+		return -ENOMEM;
+
+	if (copy_from_user(kern_repl, optval, optlen)) {
+		ret = -EFAULT;
+		goto err02;
+	}
+
+	/* 32-bit ptr is in the MSB's */
+	user_counters = (unsigned int) (((unsigned long) kern_repl->counters) >> 32);
+	/*
+	** We are going to set_fs() to kernel space - and thus need
+	** "relocate" the counters buffer to the kernel space.
+	*/
+	kern_counters = (struct ipt_counters *) kmalloc(kern_repl->num_counters * sizeof(struct ipt_counters), GFP_KERNEL);
+	if (!user_counters) {
+		ret = -ENOMEM;
+		goto err02;
+	}
+
+	if (copy_from_user(kern_counters, (char *) user_counters, optlen)) {
+		ret = -EFAULT;
+		goto err01;
+	}
+
+	/* We can update the kernel ptr now that we have the data. */
+	kern_repl->counters = kern_counters;
+
+	old_fs = get_fs();
+	set_fs(KERNEL_DS);
+
+	ret = sys_setsockopt(fd, level, optname, (char *) optval, optlen);
+
+	set_fs(old_fs);
+
+	/* Copy counters back out to user space */
+	if (copy_to_user((char *) user_counters, kern_counters,
+			kern_repl->num_counters * sizeof(struct ipt_counters)))
+	{
+		ret = -EFAULT;
+		goto err01;
+	}
+
+	/* restore counters so userspace can consume it */
+	kern_repl->counters = NULL;
+	(unsigned int) kern_repl->counters = user_counters;
+
+	/* Copy repl back out to user space */
+	if (copy_to_user(optval, kern_repl, optlen))
+	{
+		ret = -EFAULT;
+	}
+
+err01:
+	kfree(kern_counters);
+err02:
+	kfree(kern_repl);
+	return ret;
+}
+#endif
+
+
+asmlinkage int sys32_setsockopt(int fd, int level, int optname,
+				char *optval, int optlen)
+{
+	if (optname == SO_ATTACH_FILTER)
+		return do_set_attach_filter(fd, level, optname, optval, optlen);
+
+	if (level == SOL_ICMPV6   && optname == ICMPV6_FILTER)
+		return do_set_icmpv6_filter(fd, level, optname, optval, optlen);
+
+	/*
+	** Beware:    IPT_SO_SET_REPLACE == IP6T_SO_SET_REPLACE
+	*/
+	if (level == IPPROTO_IP   && optname == IPT_SO_SET_REPLACE)
+		return do_ipv4_set_replace(fd, level, optname, optval, optlen);
+
+	if (level == IPPROTO_IPV6 && optname == IP6T_SO_SET_REPLACE)
+#if 0
+		/* FIXME: I don't (yet) use IPV6. -ggg */
+		return do_ipv6_set_replace(fd, level, optname, optval, optlen);
+#else
+	{
+		BUG();
+		return -ENXIO;
+	}
+#endif
+
+	return sys_setsockopt(fd, level, optname, optval, optlen);
+}
+
+
+/*** copied from mips64 ***/
+/*
+ * Ooo, nasty.  We need here to frob 32-bit unsigned longs to
+ * 64-bit unsigned longs.
+ */
+
+static inline int
+get_fd_set32(unsigned long n, u32 *ufdset, unsigned long *fdset)
+{
+	n = (n + 8*sizeof(u32) - 1) / (8*sizeof(u32));
+	if (ufdset) {
+		unsigned long odd;
+
+		if (verify_area(VERIFY_WRITE, ufdset, n*sizeof(u32)))
+			return -EFAULT;
+
+		odd = n & 1UL;
+		n &= ~1UL;
+		while (n) {
+			unsigned long h, l;
+			__get_user(l, ufdset);
+			__get_user(h, ufdset+1);
+			ufdset += 2;
+			*fdset++ = h << 32 | l;
+			n -= 2;
+		}
+		if (odd)
+			__get_user(*fdset, ufdset);
+	} else {
+		/* Tricky, must clear full unsigned long in the
+		 * kernel fdset at the end, this makes sure that
+		 * actually happens.
+		 */
+		memset(fdset, 0, ((n + 1) & ~1)*sizeof(u32));
+	}
+	return 0;
+}
+
+static inline void
+set_fd_set32(unsigned long n, u32 *ufdset, unsigned long *fdset)
+{
+	unsigned long odd;
+	n = (n + 8*sizeof(u32) - 1) / (8*sizeof(u32));
+
+	if (!ufdset)
+		return;
+
+	odd = n & 1UL;
+	n &= ~1UL;
+	while (n) {
+		unsigned long h, l;
+		l = *fdset++;
+		h = l >> 32;
+		__put_user(l, ufdset);
+		__put_user(h, ufdset+1);
+		ufdset += 2;
+		n -= 2;
+	}
+	if (odd)
+		__put_user(*fdset, ufdset);
+}
+
+/*** This is a virtual copy of sys_select from fs/select.c and probably
+ *** should be compared to it from time to time
+ ***/
+static inline void *select_bits_alloc(int size)
+{
+	return kmalloc(6 * size, GFP_KERNEL);
+}
+
+static inline void select_bits_free(void *bits, int size)
+{
+	kfree(bits);
+}
+
+/*
+ * We can actually return ERESTARTSYS instead of EINTR, but I'd
+ * like to be certain this leads to no problems. So I return
+ * EINTR just for safety.
+ *
+ * Update: ERESTARTSYS breaks at least the xview clock binary, so
+ * I'm trying ERESTARTNOHAND which restart only when you want to.
+ */
+#define MAX_SELECT_SECONDS \
+	((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1)
+#define DIVIDE_ROUND_UP(x,y) (((x)+(y)-1)/(y))
+
+asmlinkage long
+sys32_select(int n, u32 *inp, u32 *outp, u32 *exp, struct timeval32 *tvp)
+{
+	fd_set_bits fds;
+	char *bits;
+	long timeout;
+	int ret, size, err;
+
+	timeout = MAX_SCHEDULE_TIMEOUT;
+	if (tvp) {
+		struct timeval32 tv32;
+		time_t sec, usec;
+
+		if ((ret = copy_from_user(&tv32, tvp, sizeof tv32)))
+			goto out_nofds;
+
+		sec = tv32.tv_sec;
+		usec = tv32.tv_usec;
+
+		ret = -EINVAL;
+		if (sec < 0 || usec < 0)
+			goto out_nofds;
+
+		if ((unsigned long) sec < MAX_SELECT_SECONDS) {
+			timeout = DIVIDE_ROUND_UP(usec, 1000000/HZ);
+			timeout += sec * (unsigned long) HZ;
+		}
+	}
+
+	ret = -EINVAL;
+	if (n < 0)
+		goto out_nofds;
+
+	if (n > current->files->max_fdset)
+		n = current->files->max_fdset;
+
+	/*
+	 * We need 6 bitmaps (in/out/ex for both incoming and outgoing),
+	 * since we used fdset we need to allocate memory in units of
+	 * long-words. 
+	 */
+	ret = -ENOMEM;
+	size = FDS_BYTES(n);
+	bits = select_bits_alloc(size);
+	if (!bits)
+		goto out_nofds;
+	fds.in      = (unsigned long *)  bits;
+	fds.out     = (unsigned long *) (bits +   size);
+	fds.ex      = (unsigned long *) (bits + 2*size);
+	fds.res_in  = (unsigned long *) (bits + 3*size);
+	fds.res_out = (unsigned long *) (bits + 4*size);
+	fds.res_ex  = (unsigned long *) (bits + 5*size);
+
+	if ((ret = get_fd_set32(n, inp, fds.in)) ||
+	    (ret = get_fd_set32(n, outp, fds.out)) ||
+	    (ret = get_fd_set32(n, exp, fds.ex)))
+		goto out;
+	zero_fd_set(n, fds.res_in);
+	zero_fd_set(n, fds.res_out);
+	zero_fd_set(n, fds.res_ex);
+
+	ret = do_select(n, &fds, &timeout);
+
+	if (tvp && !(current->personality & STICKY_TIMEOUTS)) {
+		time_t sec = 0, usec = 0;
+		if (timeout) {
+			sec = timeout / HZ;
+			usec = timeout % HZ;
+			usec *= (1000000/HZ);
+		}
+		err = put_user(sec, &tvp->tv_sec);
+		err |= __put_user(usec, &tvp->tv_usec);
+		if (err)
+			ret = -EFAULT;
+	}
+
+	if (ret < 0)
+		goto out;
+	if (!ret) {
+		ret = -ERESTARTNOHAND;
+		if (signal_pending(current))
+			goto out;
+		ret = 0;
+	}
+
+	set_fd_set32(n, inp, fds.res_in);
+	set_fd_set32(n, outp, fds.res_out);
+	set_fd_set32(n, exp, fds.res_ex);
+
+out:
+	select_bits_free(bits, size);
+out_nofds:
+	return ret;
+}
+
+struct msgbuf32 {
+    int mtype;
+    char mtext[1];
+};
+
+asmlinkage long sys32_msgsnd(int msqid,
+				struct msgbuf32 *umsgp32,
+				size_t msgsz, int msgflg)
+{
+	struct msgbuf *mb;
+	struct msgbuf32 mb32;
+	int err;
+
+	if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL)
+		return -ENOMEM;
+
+	err = get_user(mb32.mtype, &umsgp32->mtype);
+	mb->mtype = mb32.mtype;
+	err |= copy_from_user(mb->mtext, &umsgp32->mtext, msgsz);
+
+	if (err)
+		err = -EFAULT;
+	else
+		KERNEL_SYSCALL(err, sys_msgsnd, msqid, mb, msgsz, msgflg);
+
+	kfree(mb);
+	return err;
+}
+
+asmlinkage long sys32_msgrcv(int msqid,
+				struct msgbuf32 *umsgp32,
+				size_t msgsz, long msgtyp, int msgflg)
+{
+	struct msgbuf *mb;
+	struct msgbuf32 mb32;
+	int err, len;
+
+	if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL)
+		return -ENOMEM;
+
+	KERNEL_SYSCALL(err, sys_msgrcv, msqid, mb, msgsz, msgtyp, msgflg);
+
+	if (err >= 0) {
+		len = err;
+		mb32.mtype = mb->mtype;
+		err = put_user(mb32.mtype, &umsgp32->mtype);
+		err |= copy_to_user(&umsgp32->mtext, mb->mtext, len);
+		if (err)
+			err = -EFAULT;
+		else
+			err = len;
+	}
+
+	kfree(mb);
+	return err;
+}
+
+/* LFS */
+
+extern asmlinkage long sys_truncate(const char *, loff_t);
+extern asmlinkage long sys_ftruncate(unsigned int, loff_t);
+extern asmlinkage long sys_fcntl(unsigned int, unsigned int, unsigned long);
+
+asmlinkage long sys32_truncate64(const char * path, unsigned int high, unsigned int low)
+{
+	return sys_truncate(path, (loff_t)high << 32 | low);
+}
+
+asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned int high, unsigned int low)
+{
+	return sys_ftruncate(fd, (loff_t)high << 32 | low);
+}
+
+asmlinkage long sys32_fcntl64(unsigned int fd, unsigned int cmd, unsigned long arg)
+{
+	switch (cmd) {
+		case F_GETLK64:
+			cmd = F_GETLK;
+			break;
+		case F_SETLK64:
+			cmd = F_SETLK;
+			break;
+		case F_SETLKW64:
+			cmd = F_SETLKW;
+			break;
+		default:
+			break;
+	}
+	return sys_fcntl(fd, cmd, arg);
+}
+
+/* EXPORT/UNEXPORT */
+struct nfsctl_export32 {
+	char			ex_client[NFSCLNT_IDMAX+1];
+	char			ex_path[NFS_MAXPATHLEN+1];
+	__kernel_dev_t		ex_dev;
+	__kernel_ino_t32	ex_ino;
+	int			ex_flags;
+	__kernel_uid_t		ex_anon_uid;
+	__kernel_gid_t		ex_anon_gid;
+};
+
+/* GETFH */
+struct nfsctl_fhparm32 {
+	struct sockaddr		gf_addr;
+	__kernel_dev_t		gf_dev;
+	__kernel_ino_t32	gf_ino;
+	int			gf_version;
+};
+
+/* UGIDUPDATE */
+struct nfsctl_uidmap32 {
+	__kernel_caddr_t32	ug_ident;
+	__kernel_uid_t		ug_uidbase;
+	int			ug_uidlen;
+	__kernel_caddr_t32	ug_udimap;
+	__kernel_gid_t		ug_gidbase;
+	int			ug_gidlen;
+	__kernel_caddr_t32	ug_gdimap;
+};
+
+struct nfsctl_arg32 {
+	int			ca_version;	/* safeguard */
+	/* wide kernel places this union on 8-byte boundary, narrow on 4 */
+	union {
+		struct nfsctl_svc	u_svc;
+		struct nfsctl_client	u_client;
+		struct nfsctl_export32	u_export;
+		struct nfsctl_uidmap32	u_umap;
+		struct nfsctl_fhparm32	u_getfh;
+		struct nfsctl_fdparm	u_getfd;
+		struct nfsctl_fsparm	u_getfs;
+	} u;
+};
+
+asmlinkage int sys32_nfsservctl(int cmd, void *argp, void *resp)
+{
+	int ret, tmp;
+	struct nfsctl_arg32 n32;
+	struct nfsctl_arg n;
+
+	ret = copy_from_user(&n, argp, sizeof n.ca_version);
+	if (ret != 0)
+		return ret;
+
+	/* adjust argp to point at the union inside the user's n32 struct */
+	tmp = (unsigned long)&n32.u - (unsigned long)&n32;
+	argp = (void *)((unsigned long)argp + tmp);
+	switch(cmd) {
+	case NFSCTL_SVC:
+		ret = copy_from_user(&n.u, argp, sizeof n.u.u_svc);
+		break;
+
+	case NFSCTL_ADDCLIENT:
+	case NFSCTL_DELCLIENT:
+		ret = copy_from_user(&n.u, argp, sizeof n.u.u_client);
+		break;
+
+	case NFSCTL_GETFD:
+		ret = copy_from_user(&n.u, argp, sizeof n.u.u_getfd);
+		break;
+
+	case NFSCTL_GETFS:
+		ret = copy_from_user(&n.u, argp, sizeof n.u.u_getfs);
+		break;
+
+	case NFSCTL_GETFH:		/* nfsctl_fhparm */
+		ret = copy_from_user(&n32.u, argp, sizeof n32.u.u_getfh);
+#undef CP
+#define CP(x)	n.u.u_getfh.gf_##x = n32.u.u_getfh.gf_##x
+		CP(addr);
+		CP(dev);
+		CP(ino);
+		CP(version);
+		break;
+
+	case NFSCTL_UGIDUPDATE:		/* nfsctl_uidmap */
+		ret = copy_from_user(&n32.u, argp, sizeof n32.u.u_umap);
+#undef CP
+#define CP(x)	n.u.u_umap.ug_##x = n32.u.u_umap.ug_##x
+		n.u.u_umap.ug_ident = (char *)(u_long)n32.u.u_umap.ug_ident;
+		CP(uidbase);
+		CP(uidlen);
+		n.u.u_umap.ug_udimap = (__kernel_uid_t *)(u_long)n32.u.u_umap.ug_udimap;
+		CP(gidbase);
+		CP(gidlen);
+		n.u.u_umap.ug_gdimap = (__kernel_gid_t *)(u_long)n32.u.u_umap.ug_gdimap;
+		break;
+
+	case NFSCTL_UNEXPORT:		/* nfsctl_export */
+	case NFSCTL_EXPORT:		/* nfsctl_export */
+		ret = copy_from_user(&n32.u, argp, sizeof n32.u.u_export);
+#undef CP
+#define CP(x)	n.u.u_export.ex_##x = n32.u.u_export.ex_##x
+		memcpy(n.u.u_export.ex_client, n32.u.u_export.ex_client, sizeof n32.u.u_export.ex_client);
+		memcpy(n.u.u_export.ex_path, n32.u.u_export.ex_path, sizeof n32.u.u_export.ex_path);
+		CP(dev);
+		CP(ino);
+		CP(flags);
+		CP(anon_uid);
+		CP(anon_gid);
+		break;
+
+	default:
+		BUG(); /* new cmd values to be translated... */
+		ret = -EINVAL;
+		break;
+	}
+
+	if (ret == 0) {
+		unsigned char rbuf[NFS_FHSIZE + sizeof (struct knfsd_fh)];
+		KERNEL_SYSCALL(ret, sys_nfsservctl, cmd, &n, &rbuf);
+		if (cmd == NFSCTL_GETFH || cmd == NFSCTL_GETFD) {
+			ret = copy_to_user(resp, rbuf, NFS_FHSIZE);
+		} else if (cmd == NFSCTL_GETFS) {
+			ret = copy_to_user(resp, rbuf, sizeof (struct knfsd_fh));
+		}
+	}
+
+	return ret;
+}
+
+#include <linux/quota.h>
+
+struct dqblk32 {
+    __u32 dqb_bhardlimit;
+    __u32 dqb_bsoftlimit;
+    __u32 dqb_curblocks;
+    __u32 dqb_ihardlimit;
+    __u32 dqb_isoftlimit;
+    __u32 dqb_curinodes;
+    __kernel_time_t32 dqb_btime;
+    __kernel_time_t32 dqb_itime;
+};
+                                
+
+asmlinkage int sys32_quotactl(int cmd, const char *special, int id, unsigned long addr)
+{
+#if 0
+	extern int sys_quotactl(int cmd, const char *special, int id, caddr_t addr);
+	int cmds = cmd >> SUBCMDSHIFT;
+	int err;
+	struct dqblk d;
+	char *spec;
+	
+	switch (cmds) {
+	case Q_GETQUOTA:
+		break;
+	case Q_SETQUOTA:
+	case Q_SETUSE:
+	case Q_SETQLIM:
+		if (copy_from_user (&d, (struct dqblk32 *)addr,
+				    sizeof (struct dqblk32)))
+			return -EFAULT;
+		d.dqb_itime = ((struct dqblk32 *)&d)->dqb_itime;
+		d.dqb_btime = ((struct dqblk32 *)&d)->dqb_btime;
+		break;
+	default:
+		return sys_quotactl(cmd, special,
+				    id, (caddr_t)addr);
+	}
+	spec = getname (special);
+	err = PTR_ERR(spec);
+	if (IS_ERR(spec)) return err;
+	KERNEL_SYSCALL(err, sys_quotactl, cmd, (const char *)spec, id, (caddr_t)&d);
+	putname (spec);
+	if (cmds == Q_GETQUOTA) {
+		__kernel_time_t b = d.dqb_btime, i = d.dqb_itime;
+		((struct dqblk32 *)&d)->dqb_itime = i;
+		((struct dqblk32 *)&d)->dqb_btime = b;
+		if (copy_to_user ((struct dqblk32 *)addr, &d,
+				  sizeof (struct dqblk32)))
+			return -EFAULT;
+	}
+	return err;
+#endif
+	/* TODO */
+	BUG();
+	return -EINVAL;
+}
+
+struct timex32 {
+	unsigned int modes;	/* mode selector */
+	int offset;		/* time offset (usec) */
+	int freq;		/* frequency offset (scaled ppm) */
+	int maxerror;		/* maximum error (usec) */
+	int esterror;		/* estimated error (usec) */
+	int status;		/* clock command/status */
+	int constant;		/* pll time constant */
+	int precision;		/* clock precision (usec) (read only) */
+	int tolerance;		/* clock frequency tolerance (ppm)
+				 * (read only)
+				 */
+	struct timeval32 time;	/* (read only) */
+	int tick;		/* (modified) usecs between clock ticks */
+
+	int ppsfreq;           /* pps frequency (scaled ppm) (ro) */
+	int jitter;            /* pps jitter (us) (ro) */
+	int shift;              /* interval duration (s) (shift) (ro) */
+	int stabil;            /* pps stability (scaled ppm) (ro) */
+	int jitcnt;            /* jitter limit exceeded (ro) */
+	int calcnt;            /* calibration intervals (ro) */
+	int errcnt;            /* calibration errors (ro) */
+	int stbcnt;            /* stability limit exceeded (ro) */
+
+	int  :32; int  :32; int  :32; int  :32;
+	int  :32; int  :32; int  :32; int  :32;
+	int  :32; int  :32; int  :32; int  :32;
+};
+
+asmlinkage long sys32_adjtimex(struct timex32 *txc_p32)
+{
+	struct timex txc;
+	struct timex32 t32;
+	int ret;
+	extern int do_adjtimex(struct timex *txc);
+
+	if(copy_from_user(&t32, txc_p32, sizeof(struct timex32)))
+		return -EFAULT;
+#undef CP
+#define CP(x) txc.x = t32.x
+	CP(modes); CP(offset); CP(freq); CP(maxerror); CP(esterror);
+	CP(status); CP(constant); CP(precision); CP(tolerance);
+	CP(time.tv_sec); CP(time.tv_usec); CP(tick); CP(ppsfreq); CP(jitter);
+	CP(shift); CP(stabil); CP(jitcnt); CP(calcnt); CP(errcnt);
+	CP(stbcnt);
+	ret = do_adjtimex(&txc);
+#undef CP
+#define CP(x) t32.x = txc.x
+	CP(modes); CP(offset); CP(freq); CP(maxerror); CP(esterror);
+	CP(status); CP(constant); CP(precision); CP(tolerance);
+	CP(time.tv_sec); CP(time.tv_usec); CP(tick); CP(ppsfreq); CP(jitter);
+	CP(shift); CP(stabil); CP(jitcnt); CP(calcnt); CP(errcnt);
+	CP(stbcnt);
+	return copy_to_user(txc_p32, &t32, sizeof(struct timex32)) ? -EFAULT : ret;
+}
+
+
+struct sysinfo32 {
+	s32 uptime;
+	u32 loads[3];
+	u32 totalram;
+	u32 freeram;
+	u32 sharedram;
+	u32 bufferram;
+	u32 totalswap;
+	u32 freeswap;
+	unsigned short procs;
+	u32 totalhigh;
+	u32 freehigh;
+	u32 mem_unit;
+	char _f[12];
+};
+
+/* We used to call sys_sysinfo and translate the result.  But sys_sysinfo
+ * undoes the good work done elsewhere, and rather than undoing the
+ * damage, I decided to just duplicate the code from sys_sysinfo here.
+ */
+
+asmlinkage int sys32_sysinfo(struct sysinfo32 *info)
+{
+	struct sysinfo val;
+	int err;
+	extern rwlock_t xtime_lock;
+
+	/* We don't need a memset here because we copy the
+	 * struct to userspace once element at a time.
+	 */
+
+	read_lock_irq(&xtime_lock);
+	val.uptime = jiffies / HZ;
+
+	val.loads[0] = avenrun[0] << (SI_LOAD_SHIFT - FSHIFT);
+	val.loads[1] = avenrun[1] << (SI_LOAD_SHIFT - FSHIFT);
+	val.loads[2] = avenrun[2] << (SI_LOAD_SHIFT - FSHIFT);
+
+	val.procs = nr_threads;
+	read_unlock_irq(&xtime_lock);
+
+	si_meminfo(&val);
+	si_swapinfo(&val);
+	
+	err = put_user (val.uptime, &info->uptime);
+	err |= __put_user (val.loads[0], &info->loads[0]);
+	err |= __put_user (val.loads[1], &info->loads[1]);
+	err |= __put_user (val.loads[2], &info->loads[2]);
+	err |= __put_user (val.totalram, &info->totalram);
+	err |= __put_user (val.freeram, &info->freeram);
+	err |= __put_user (val.sharedram, &info->sharedram);
+	err |= __put_user (val.bufferram, &info->bufferram);
+	err |= __put_user (val.totalswap, &info->totalswap);
+	err |= __put_user (val.freeswap, &info->freeswap);
+	err |= __put_user (val.procs, &info->procs);
+	err |= __put_user (val.totalhigh, &info->totalhigh);
+	err |= __put_user (val.freehigh, &info->freehigh);
+	err |= __put_user (val.mem_unit, &info->mem_unit);
+	return err ? -EFAULT : 0;
+}
+
+
+/* lseek() needs a wrapper because 'offset' can be negative, but the top
+ * half of the argument has been zeroed by syscall.S.
+ */
+
+extern asmlinkage off_t sys_lseek(unsigned int fd, off_t offset, unsigned int origin);
+
+asmlinkage int sys32_lseek(unsigned int fd, int offset, unsigned int origin)
+{
+	return sys_lseek(fd, offset, origin);
+}
+
+asmlinkage long sys32_semctl_broken(int semid, int semnum, int cmd, union semun arg)
+{
+        union semun u;
+	
+	cmd &= ~IPC_64; /* should be removed together with the _broken suffix */
+
+        if (cmd == SETVAL) {
+                /* Ugh.  arg is a union of int,ptr,ptr,ptr, so is 8 bytes.
+                 * The int should be in the first 4, but our argument
+                 * frobbing has left it in the last 4.
+                 */
+                u.val = *((int *)&arg + 1);
+                return sys_semctl (semid, semnum, cmd, u);
+	}
+	return sys_semctl (semid, semnum, cmd, arg);
+}
+