Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1045 insertions, 0 deletions

diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
new file mode 100644
index 00000000000..61405622287
--- /dev/null
+++ b/arch/s390/kernel/compat_linux.c
@@ -0,0 +1,1045 @@
+/*
+ *  arch/s390x/kernel/linux32.c
+ *
+ *  S390 version
+ *    Copyright (C) 2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
+ *               Gerhard Tonn (ton@de.ibm.com)   
+ *               Thomas Spatzier (tspat@de.ibm.com)
+ *
+ *  Conversion between 31bit and 64bit native syscalls.
+ *
+ * Heavily inspired by the 32-bit Sparc compat code which is 
+ * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
+ *
+ */
+
+
+#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/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/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>
+#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/compat.h>
+#include <linux/vfs.h>
+#include <linux/ptrace.h>
+
+#include <asm/types.h>
+#include <asm/ipc.h>
+#include <asm/uaccess.h>
+#include <asm/semaphore.h>
+
+#include <net/scm.h>
+#include <net/sock.h>
+
+#include "compat_linux.h"
+
+ 
+/* 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)
+
+asmlinkage long sys32_chown16(const char * filename, u16 user, u16 group)
+{
+	return sys_chown(filename, low2highuid(user), low2highgid(group));
+}
+
+asmlinkage long sys32_lchown16(const char * filename, u16 user, u16 group)
+{
+	return sys_lchown(filename, low2highuid(user), low2highgid(group));
+}
+
+asmlinkage long sys32_fchown16(unsigned int fd, u16 user, u16 group)
+{
+	return sys_fchown(fd, low2highuid(user), low2highgid(group));
+}
+
+asmlinkage long sys32_setregid16(u16 rgid, u16 egid)
+{
+	return sys_setregid(low2highgid(rgid), low2highgid(egid));
+}
+
+asmlinkage long sys32_setgid16(u16 gid)
+{
+	return sys_setgid((gid_t)gid);
+}
+
+asmlinkage long sys32_setreuid16(u16 ruid, u16 euid)
+{
+	return sys_setreuid(low2highuid(ruid), low2highuid(euid));
+}
+
+asmlinkage long sys32_setuid16(u16 uid)
+{
+	return sys_setuid((uid_t)uid);
+}
+
+asmlinkage long sys32_setresuid16(u16 ruid, u16 euid, u16 suid)
+{
+	return sys_setresuid(low2highuid(ruid), low2highuid(euid),
+		low2highuid(suid));
+}
+
+asmlinkage long sys32_getresuid16(u16 *ruid, u16 *euid, u16 *suid)
+{
+	int retval;
+
+	if (!(retval = put_user(high2lowuid(current->uid), ruid)) &&
+	    !(retval = put_user(high2lowuid(current->euid), euid)))
+		retval = put_user(high2lowuid(current->suid), suid);
+
+	return retval;
+}
+
+asmlinkage long sys32_setresgid16(u16 rgid, u16 egid, u16 sgid)
+{
+	return sys_setresgid(low2highgid(rgid), low2highgid(egid),
+		low2highgid(sgid));
+}
+
+asmlinkage long sys32_getresgid16(u16 *rgid, u16 *egid, u16 *sgid)
+{
+	int retval;
+
+	if (!(retval = put_user(high2lowgid(current->gid), rgid)) &&
+	    !(retval = put_user(high2lowgid(current->egid), egid)))
+		retval = put_user(high2lowgid(current->sgid), sgid);
+
+	return retval;
+}
+
+asmlinkage long sys32_setfsuid16(u16 uid)
+{
+	return sys_setfsuid((uid_t)uid);
+}
+
+asmlinkage long sys32_setfsgid16(u16 gid)
+{
+	return sys_setfsgid((gid_t)gid);
+}
+
+static int groups16_to_user(u16 *grouplist, struct group_info *group_info)
+{
+	int i;
+	u16 group;
+
+	for (i = 0; i < group_info->ngroups; i++) {
+		group = (u16)GROUP_AT(group_info, i);
+		if (put_user(group, grouplist+i))
+			return -EFAULT;
+	}
+
+	return 0;
+}
+
+static int groups16_from_user(struct group_info *group_info, u16 *grouplist)
+{
+	int i;
+	u16 group;
+
+	for (i = 0; i < group_info->ngroups; i++) {
+		if (get_user(group, grouplist+i))
+			return  -EFAULT;
+		GROUP_AT(group_info, i) = (gid_t)group;
+	}
+
+	return 0;
+}
+
+asmlinkage long sys32_getgroups16(int gidsetsize, u16 *grouplist)
+{
+	int i;
+
+	if (gidsetsize < 0)
+		return -EINVAL;
+
+	get_group_info(current->group_info);
+	i = current->group_info->ngroups;
+	if (gidsetsize) {
+		if (i > gidsetsize) {
+			i = -EINVAL;
+			goto out;
+		}
+		if (groups16_to_user(grouplist, current->group_info)) {
+			i = -EFAULT;
+			goto out;
+		}
+	}
+out:
+	put_group_info(current->group_info);
+	return i;
+}
+
+asmlinkage long sys32_setgroups16(int gidsetsize, u16 *grouplist)
+{
+	struct group_info *group_info;
+	int retval;
+
+	if (!capable(CAP_SETGID))
+		return -EPERM;
+	if ((unsigned)gidsetsize > NGROUPS_MAX)
+		return -EINVAL;
+
+	group_info = groups_alloc(gidsetsize);
+	if (!group_info)
+		return -ENOMEM;
+	retval = groups16_from_user(group_info, grouplist);
+	if (retval) {
+		put_group_info(group_info);
+		return retval;
+	}
+
+	retval = set_current_groups(group_info);
+	put_group_info(group_info);
+
+	return retval;
+}
+
+asmlinkage long sys32_getuid16(void)
+{
+	return high2lowuid(current->uid);
+}
+
+asmlinkage long sys32_geteuid16(void)
+{
+	return high2lowuid(current->euid);
+}
+
+asmlinkage long sys32_getgid16(void)
+{
+	return high2lowgid(current->gid);
+}
+
+asmlinkage long sys32_getegid16(void)
+{
+	return high2lowgid(current->egid);
+}
+
+/* 32-bit timeval and related flotsam.  */
+
+static inline long get_tv32(struct timeval *o, struct compat_timeval *i)
+{
+	return (!access_ok(VERIFY_READ, tv32, sizeof(*tv32)) ||
+		(__get_user(o->tv_sec, &i->tv_sec) ||
+		 __get_user(o->tv_usec, &i->tv_usec)));
+}
+
+static inline long put_tv32(struct compat_timeval *o, struct timeval *i)
+{
+	return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
+		(__put_user(i->tv_sec, &o->tv_sec) ||
+		 __put_user(i->tv_usec, &o->tv_usec)));
+}
+
+/*
+ * sys32_ipc() is the de-multiplexer for the SysV IPC calls in 32bit emulation.
+ *
+ * This is really horribly ugly.
+ */
+asmlinkage long sys32_ipc(u32 call, int first, int second, int third, u32 ptr)
+{
+	if (call >> 16)		/* hack for backward compatibility */
+		return -EINVAL;
+
+	call &= 0xffff;
+
+	switch (call) {
+	case SEMTIMEDOP:
+		return compat_sys_semtimedop(first, compat_ptr(ptr),
+					     second, compat_ptr(third));
+	case SEMOP:
+		/* struct sembuf is the same on 32 and 64bit :)) */
+		return sys_semtimedop(first, compat_ptr(ptr),
+				      second, NULL);
+	case SEMGET:
+		return sys_semget(first, second, third);
+	case SEMCTL:
+		return compat_sys_semctl(first, second, third,
+					 compat_ptr(ptr));
+	case MSGSND:
+		return compat_sys_msgsnd(first, second, third,
+					 compat_ptr(ptr));
+	case MSGRCV:
+		return compat_sys_msgrcv(first, second, 0, third,
+					 0, compat_ptr(ptr));
+	case MSGGET:
+		return sys_msgget((key_t) first, second);
+	case MSGCTL:
+		return compat_sys_msgctl(first, second, compat_ptr(ptr));
+	case SHMAT:
+		return compat_sys_shmat(first, second, third,
+					0, compat_ptr(ptr));
+	case SHMDT:
+		return sys_shmdt(compat_ptr(ptr));
+	case SHMGET:
+		return sys_shmget(first, (unsigned)second, third);
+	case SHMCTL:
+		return compat_sys_shmctl(first, second, compat_ptr(ptr));
+	}
+
+	return -ENOSYS;
+}
+
+asmlinkage long sys32_truncate64(const char * 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);
+}
+
+int cp_compat_stat(struct kstat *stat, struct compat_stat *statbuf)
+{
+	int err;
+
+	if (!old_valid_dev(stat->dev) || !old_valid_dev(stat->rdev))
+		return -EOVERFLOW;
+
+	err = put_user(old_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(high2lowuid(stat->uid), &statbuf->st_uid);
+	err |= put_user(high2lowgid(stat->gid), &statbuf->st_gid);
+	err |= put_user(old_encode_dev(stat->rdev), &statbuf->st_rdev);
+	err |= put_user(stat->size, &statbuf->st_size);
+	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(stat->blksize, &statbuf->st_blksize);
+	err |= put_user(stat->blocks, &statbuf->st_blocks);
+/* fixme
+	err |= put_user(0, &statbuf->__unused4[0]);
+	err |= put_user(0, &statbuf->__unused4[1]);
+*/
+	return err;
+}
+
+struct sysinfo32 {
+        s32 uptime;
+        u32 loads[3];
+        u32 totalram;
+        u32 freeram;
+        u32 sharedram;
+        u32 bufferram;
+        u32 totalswap;
+        u32 freeswap;
+        unsigned short procs;
+	unsigned short pads;
+	u32 totalhigh;
+	u32 freehigh;
+	unsigned int mem_unit;
+        char _f[8];
+};
+
+asmlinkage long sys32_sysinfo(struct sysinfo32 __user *info)
+{
+	struct sysinfo s;
+	int ret, err;
+	mm_segment_t old_fs = get_fs ();
+	
+	set_fs (KERNEL_DS);
+	ret = sys_sysinfo(&s);
+	set_fs (old_fs);
+	err = put_user (s.uptime, &info->uptime);
+	err |= __put_user (s.loads[0], &info->loads[0]);
+	err |= __put_user (s.loads[1], &info->loads[1]);
+	err |= __put_user (s.loads[2], &info->loads[2]);
+	err |= __put_user (s.totalram, &info->totalram);
+	err |= __put_user (s.freeram, &info->freeram);
+	err |= __put_user (s.sharedram, &info->sharedram);
+	err |= __put_user (s.bufferram, &info->bufferram);
+	err |= __put_user (s.totalswap, &info->totalswap);
+	err |= __put_user (s.freeswap, &info->freeswap);
+	err |= __put_user (s.procs, &info->procs);
+	err |= __put_user (s.totalhigh, &info->totalhigh);
+	err |= __put_user (s.freehigh, &info->freehigh);
+	err |= __put_user (s.mem_unit, &info->mem_unit);
+	if (err)
+		return -EFAULT;
+	return ret;
+}
+
+asmlinkage long sys32_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, &t);
+	set_fs (old_fs);
+	if (put_compat_timespec(&t, interval))
+		return -EFAULT;
+	return ret;
+}
+
+asmlinkage long sys32_rt_sigprocmask(int how, compat_sigset_t __user *set,
+			compat_sigset_t __user *oset, 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 ? &s : NULL, oset ? &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,
+				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(&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
+sys32_rt_sigqueueinfo(int pid, int sig, compat_siginfo_t __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, &info);
+	set_fs (old_fs);
+	return ret;
+}
+
+/*
+ * sys32_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
+sys32_execve(struct pt_regs regs)
+{
+        int error;
+        char * filename;
+
+        filename = getname(compat_ptr(regs.orig_gpr2));
+        error = PTR_ERR(filename);
+        if (IS_ERR(filename))
+                goto out;
+        error = compat_do_execve(filename, compat_ptr(regs.gprs[3]),
+				 compat_ptr(regs.gprs[4]), &regs);
+	if (error == 0)
+	{
+		task_lock(current);
+		current->ptrace &= ~PT_DTRACE;
+		task_unlock(current);
+		current->thread.fp_regs.fpc=0;
+		__asm__ __volatile__
+		        ("sr  0,0\n\t"
+		         "sfpc 0,0\n\t"
+			 : : :"0");
+	}
+        putname(filename);
+out:
+        return error;
+}
+
+
+#ifdef CONFIG_MODULES
+
+asmlinkage long
+sys32_init_module(void __user *umod, unsigned long 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(void __user *umod, unsigned long len,
+		const char __user *uargs)
+{
+	return -ENOSYS;
+}
+
+asmlinkage long
+sys32_delete_module(const char __user *name_user, unsigned int flags)
+{
+	return -ENOSYS;
+}
+
+#endif  /* CONFIG_MODULES */
+
+/* Translations due to time_t size differences.  Which affects all
+   sorts of things, like timeval and itimerval.  */
+
+extern struct timezone sys_tz;
+
+asmlinkage long sys32_gettimeofday(struct compat_timeval *tv, struct timezone *tz)
+{
+	if (tv) {
+		struct timeval ktv;
+		do_gettimeofday(&ktv);
+		if (put_tv32(tv, &ktv))
+			return -EFAULT;
+	}
+	if (tz) {
+		if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
+			return -EFAULT;
+	}
+	return 0;
+}
+
+static inline long get_ts32(struct timespec *o, struct compat_timeval *i)
+{
+	long usec;
+
+	if (!access_ok(VERIFY_READ, i, sizeof(*i)))
+		return -EFAULT;
+	if (__get_user(o->tv_sec, &i->tv_sec))
+		return -EFAULT;
+	if (__get_user(usec, &i->tv_usec))
+		return -EFAULT;
+	o->tv_nsec = usec * 1000;
+	return 0;
+}
+
+asmlinkage long sys32_settimeofday(struct compat_timeval *tv, struct timezone *tz)
+{
+	struct timespec kts;
+	struct timezone ktz;
+
+ 	if (tv) {
+		if (get_ts32(&kts, tv))
+			return -EFAULT;
+	}
+	if (tz) {
+		if (copy_from_user(&ktz, tz, sizeof(ktz)))
+			return -EFAULT;
+	}
+
+	return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
+}
+
+/* These are here just in case some old sparc32 binary calls it. */
+asmlinkage long sys32_pause(void)
+{
+	current->state = TASK_INTERRUPTIBLE;
+	schedule();
+	return -ERESTARTNOHAND;
+}
+
+asmlinkage long sys32_pread64(unsigned int fd, char *ubuf,
+				size_t count, u32 poshi, u32 poslo)
+{
+	if ((compat_ssize_t) count < 0)
+		return -EINVAL;
+	return sys_pread64(fd, ubuf, count, ((loff_t)AA(poshi) << 32) | AA(poslo));
+}
+
+asmlinkage long sys32_pwrite64(unsigned int fd, const char *ubuf,
+				size_t count, u32 poshi, u32 poslo)
+{
+	if ((compat_ssize_t) count < 0)
+		return -EINVAL;
+	return sys_pwrite64(fd, ubuf, count, ((loff_t)AA(poshi) << 32) | AA(poslo));
+}
+
+asmlinkage compat_ssize_t sys32_readahead(int fd, u32 offhi, u32 offlo, s32 count)
+{
+	return sys_readahead(fd, ((loff_t)AA(offhi) << 32) | AA(offlo), count);
+}
+
+asmlinkage long sys32_sendfile(int out_fd, int in_fd, compat_off_t *offset, 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 ? &of : NULL, count);
+	set_fs(old_fs);
+	
+	if (!ret && offset && put_user(of, offset))
+		return -EFAULT;
+		
+	return ret;
+}
+
+asmlinkage long sys32_sendfile64(int out_fd, int in_fd,
+				compat_loff_t *offset, s32 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 ? &lof : NULL, count);
+	set_fs(old_fs);
+	
+	if (offset && put_user(lof, offset))
+		return -EFAULT;
+		
+	return ret;
+}
+
+/* Handle adjtimex compatibility. */
+
+struct timex32 {
+	u32 modes;
+	s32 offset, freq, maxerror, esterror;
+	s32 status, constant, precision, tolerance;
+	struct compat_timeval time;
+	s32 tick;
+	s32 ppsfreq, jitter, shift, stabil;
+	s32 jitcnt, calcnt, errcnt, stbcnt;
+	s32  :32; s32  :32; s32  :32; s32  :32;
+	s32  :32; s32  :32; s32  :32; s32  :32;
+	s32  :32; s32  :32; s32  :32; s32  :32;
+};
+
+extern int do_adjtimex(struct timex *);
+
+asmlinkage long sys32_adjtimex(struct timex32 *utp)
+{
+	struct timex txc;
+	int ret;
+
+	memset(&txc, 0, sizeof(struct timex));
+
+	if(get_user(txc.modes, &utp->modes) ||
+	   __get_user(txc.offset, &utp->offset) ||
+	   __get_user(txc.freq, &utp->freq) ||
+	   __get_user(txc.maxerror, &utp->maxerror) ||
+	   __get_user(txc.esterror, &utp->esterror) ||
+	   __get_user(txc.status, &utp->status) ||
+	   __get_user(txc.constant, &utp->constant) ||
+	   __get_user(txc.precision, &utp->precision) ||
+	   __get_user(txc.tolerance, &utp->tolerance) ||
+	   __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
+	   __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
+	   __get_user(txc.tick, &utp->tick) ||
+	   __get_user(txc.ppsfreq, &utp->ppsfreq) ||
+	   __get_user(txc.jitter, &utp->jitter) ||
+	   __get_user(txc.shift, &utp->shift) ||
+	   __get_user(txc.stabil, &utp->stabil) ||
+	   __get_user(txc.jitcnt, &utp->jitcnt) ||
+	   __get_user(txc.calcnt, &utp->calcnt) ||
+	   __get_user(txc.errcnt, &utp->errcnt) ||
+	   __get_user(txc.stbcnt, &utp->stbcnt))
+		return -EFAULT;
+
+	ret = do_adjtimex(&txc);
+
+	if(put_user(txc.modes, &utp->modes) ||
+	   __put_user(txc.offset, &utp->offset) ||
+	   __put_user(txc.freq, &utp->freq) ||
+	   __put_user(txc.maxerror, &utp->maxerror) ||
+	   __put_user(txc.esterror, &utp->esterror) ||
+	   __put_user(txc.status, &utp->status) ||
+	   __put_user(txc.constant, &utp->constant) ||
+	   __put_user(txc.precision, &utp->precision) ||
+	   __put_user(txc.tolerance, &utp->tolerance) ||
+	   __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
+	   __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
+	   __put_user(txc.tick, &utp->tick) ||
+	   __put_user(txc.ppsfreq, &utp->ppsfreq) ||
+	   __put_user(txc.jitter, &utp->jitter) ||
+	   __put_user(txc.shift, &utp->shift) ||
+	   __put_user(txc.stabil, &utp->stabil) ||
+	   __put_user(txc.jitcnt, &utp->jitcnt) ||
+	   __put_user(txc.calcnt, &utp->calcnt) ||
+	   __put_user(txc.errcnt, &utp->errcnt) ||
+	   __put_user(txc.stbcnt, &utp->stbcnt))
+		ret = -EFAULT;
+
+	return ret;
+}
+
+#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;
+	size_t oldlen, *oldlenp = NULL;
+	unsigned long addr = (((long)&args->__unused[0]) + 7) & ~7;
+
+	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.  */
+		if (get_user(oldlen, (u32 *)A(tmp.oldlenp)) ||
+		    put_user(oldlen, (size_t *)addr))
+			return -EFAULT;
+		oldlenp = (size_t *)addr;
+	}
+
+	lock_kernel();
+	error = do_sysctl((int *)A(tmp.name), tmp.nlen, (void *)A(tmp.oldval),
+			  oldlenp, (void *)A(tmp.newval), tmp.newlen);
+	unlock_kernel();
+	if (oldlenp) {
+		if (!error) {
+			if (get_user(oldlen, (size_t *)addr) ||
+			    put_user(oldlen, (u32 *)A(tmp.oldlenp)))
+				error = -EFAULT;
+		}
+		copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
+	}
+	return error;
+}
+#endif
+
+struct stat64_emu31 {
+	unsigned long long  st_dev;
+	unsigned int    __pad1;
+#define STAT64_HAS_BROKEN_ST_INO        1
+	u32             __st_ino;
+	unsigned int    st_mode;
+	unsigned int    st_nlink;
+	u32             st_uid;
+	u32             st_gid;
+	unsigned long long  st_rdev;
+	unsigned int    __pad3;
+	long            st_size;
+	u32             st_blksize;
+	unsigned char   __pad4[4];
+	u32             __pad5;     /* future possible st_blocks high bits */
+	u32             st_blocks;  /* Number 512-byte blocks allocated. */
+	u32             st_atime;
+	u32             __pad6;
+	u32             st_mtime;
+	u32             __pad7;
+	u32             st_ctime;
+	u32             __pad8;     /* will be high 32 bits of ctime someday */
+	unsigned long   st_ino;
+};	
+
+static int cp_stat64(struct stat64_emu31 *ubuf, struct kstat *stat)
+{
+	struct stat64_emu31 tmp;
+
+	memset(&tmp, 0, sizeof(tmp));
+
+	tmp.st_dev = huge_encode_dev(stat->dev);
+	tmp.st_ino = stat->ino;
+	tmp.__st_ino = (u32)stat->ino;
+	tmp.st_mode = stat->mode;
+	tmp.st_nlink = (unsigned int)stat->nlink;
+	tmp.st_uid = stat->uid;
+	tmp.st_gid = stat->gid;
+	tmp.st_rdev = huge_encode_dev(stat->rdev);
+	tmp.st_size = stat->size;
+	tmp.st_blksize = (u32)stat->blksize;
+	tmp.st_blocks = (u32)stat->blocks;
+	tmp.st_atime = (u32)stat->atime.tv_sec;
+	tmp.st_mtime = (u32)stat->mtime.tv_sec;
+	tmp.st_ctime = (u32)stat->ctime.tv_sec;
+
+	return copy_to_user(ubuf,&tmp,sizeof(tmp)) ? -EFAULT : 0; 
+}
+
+asmlinkage long sys32_stat64(char * filename, struct stat64_emu31 * statbuf)
+{
+	struct kstat stat;
+	int ret = vfs_stat(filename, &stat);
+	if (!ret)
+		ret = cp_stat64(statbuf, &stat);
+	return ret;
+}
+
+asmlinkage long sys32_lstat64(char * filename, struct stat64_emu31 * statbuf)
+{
+	struct kstat stat;
+	int ret = vfs_lstat(filename, &stat);
+	if (!ret)
+		ret = cp_stat64(statbuf, &stat);
+	return ret;
+}
+
+asmlinkage long sys32_fstat64(unsigned long fd, struct stat64_emu31 * statbuf)
+{
+	struct kstat stat;
+	int ret = vfs_fstat(fd, &stat);
+	if (!ret)
+		ret = cp_stat64(statbuf, &stat);
+	return ret;
+}
+
+/*
+ * Linux/i386 didn't use to be able to handle more than
+ * 4 system call parameters, so these system calls used a memory
+ * block for parameter passing..
+ */
+
+struct mmap_arg_struct_emu31 {
+	u32	addr;
+	u32	len;
+	u32	prot;
+	u32	flags;
+	u32	fd;
+	u32	offset;
+};
+
+/* common code for old and new mmaps */
+static inline long do_mmap2(
+	unsigned long addr, unsigned long len,
+	unsigned long prot, unsigned long flags,
+	unsigned long fd, unsigned long pgoff)
+{
+	struct file * file = NULL;
+	unsigned long error = -EBADF;
+
+	flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
+	if (!(flags & MAP_ANONYMOUS)) {
+		file = fget(fd);
+		if (!file)
+			goto out;
+	}
+
+	down_write(&current->mm->mmap_sem);
+	error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
+	if (!IS_ERR((void *) error) && error + len >= 0x80000000ULL) {
+		/* Result is out of bounds.  */
+		do_munmap(current->mm, addr, len);
+		error = -ENOMEM;
+	}
+	up_write(&current->mm->mmap_sem);
+
+	if (file)
+		fput(file);
+out:    
+	return error;
+}
+
+
+asmlinkage unsigned long
+old32_mmap(struct mmap_arg_struct_emu31 *arg)
+{
+	struct mmap_arg_struct_emu31 a;
+	int error = -EFAULT;
+
+	if (copy_from_user(&a, arg, sizeof(a)))
+		goto out;
+
+	error = -EINVAL;
+	if (a.offset & ~PAGE_MASK)
+		goto out;
+
+	error = do_mmap2(a.addr, a.len, a.prot, a.flags, a.fd, a.offset >> PAGE_SHIFT); 
+out:
+	return error;
+}
+
+asmlinkage long 
+sys32_mmap2(struct mmap_arg_struct_emu31 *arg)
+{
+	struct mmap_arg_struct_emu31 a;
+	int error = -EFAULT;
+
+	if (copy_from_user(&a, arg, sizeof(a)))
+		goto out;
+	error = do_mmap2(a.addr, a.len, a.prot, a.flags, a.fd, a.offset);
+out:
+	return error;
+}
+
+asmlinkage long sys32_read(unsigned int fd, char * buf, size_t count)
+{
+	if ((compat_ssize_t) count < 0)
+		return -EINVAL; 
+
+	return sys_read(fd, buf, count);
+}
+
+asmlinkage long sys32_write(unsigned int fd, char * buf, size_t count)
+{
+	if ((compat_ssize_t) count < 0)
+		return -EINVAL; 
+
+	return sys_write(fd, buf, count);
+}
+
+asmlinkage long sys32_clone(struct pt_regs regs)
+{
+        unsigned long clone_flags;
+        unsigned long newsp;
+	int *parent_tidptr, *child_tidptr;
+
+        clone_flags = regs.gprs[3] & 0xffffffffUL;
+        newsp = regs.orig_gpr2 & 0x7fffffffUL;
+	parent_tidptr = (int *) (regs.gprs[4] & 0x7fffffffUL);
+	child_tidptr = (int *) (regs.gprs[5] & 0x7fffffffUL);
+        if (!newsp)
+                newsp = regs.gprs[15];
+        return do_fork(clone_flags, newsp, &regs, 0,
+		       parent_tidptr, child_tidptr);
+}
+
+/*
+ * Wrapper function for sys_timer_create.
+ */
+extern asmlinkage long
+sys_timer_create(clockid_t, struct sigevent *, timer_t *);
+
+asmlinkage long
+sys32_timer_create(clockid_t which_clock, struct compat_sigevent *se32,
+		timer_t *timer_id)
+{
+	struct sigevent se;
+	timer_t ktimer_id;
+	mm_segment_t old_fs;
+	long ret;
+
+	if (se32 == NULL)
+		return sys_timer_create(which_clock, NULL, timer_id);
+
+	if (get_compat_sigevent(&se, se32))
+		return -EFAULT;
+
+	old_fs = get_fs();
+	set_fs(KERNEL_DS);
+	ret = sys_timer_create(which_clock, &se, &ktimer_id);
+	set_fs(old_fs);
+
+	if (!ret)
+		ret = put_user (ktimer_id, timer_id);
+
+	return ret;
+}