Initial import

1 files changed, 1445 insertions, 0 deletions

diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
new file mode 100644
index 000000000..36dc91ace
--- /dev/null
+++ b/arch/alpha/kernel/osf_sys.c
@@ -0,0 +1,1445 @@
+/*
+ *  linux/arch/alpha/kernel/osf_sys.c
+ *
+ *  Copyright (C) 1995  Linus Torvalds
+ */
+
+/*
+ * This file handles some of the stranger OSF/1 system call interfaces.
+ * Some of the system calls expect a non-C calling standard, others have
+ * special parameter blocks..
+ */
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/stddef.h>
+#include <linux/syscalls.h>
+#include <linux/unistd.h>
+#include <linux/ptrace.h>
+#include <linux/user.h>
+#include <linux/utsname.h>
+#include <linux/time.h>
+#include <linux/timex.h>
+#include <linux/major.h>
+#include <linux/stat.h>
+#include <linux/mman.h>
+#include <linux/shm.h>
+#include <linux/poll.h>
+#include <linux/file.h>
+#include <linux/types.h>
+#include <linux/ipc.h>
+#include <linux/namei.h>
+#include <linux/uio.h>
+#include <linux/vfs.h>
+#include <linux/rcupdate.h>
+#include <linux/slab.h>
+
+#include <asm/fpu.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/sysinfo.h>
+#include <asm/thread_info.h>
+#include <asm/hwrpb.h>
+#include <asm/processor.h>
+
+/*
+ * Brk needs to return an error.  Still support Linux's brk(0) query idiom,
+ * which OSF programs just shouldn't be doing.  We're still not quite
+ * identical to OSF as we don't return 0 on success, but doing otherwise
+ * would require changes to libc.  Hopefully this is good enough.
+ */
+SYSCALL_DEFINE1(osf_brk, unsigned long, brk)
+{
+	unsigned long retval = sys_brk(brk);
+	if (brk && brk != retval)
+		retval = -ENOMEM;
+	return retval;
+}
+ 
+/*
+ * This is pure guess-work..
+ */
+SYSCALL_DEFINE4(osf_set_program_attributes, unsigned long, text_start,
+		unsigned long, text_len, unsigned long, bss_start,
+		unsigned long, bss_len)
+{
+	struct mm_struct *mm;
+
+	mm = current->mm;
+	mm->end_code = bss_start + bss_len;
+	mm->start_brk = bss_start + bss_len;
+	mm->brk = bss_start + bss_len;
+#if 0
+	printk("set_program_attributes(%lx %lx %lx %lx)\n",
+		text_start, text_len, bss_start, bss_len);
+#endif
+	return 0;
+}
+
+/*
+ * OSF/1 directory handling functions...
+ *
+ * The "getdents()" interface is much more sane: the "basep" stuff is
+ * braindamage (it can't really handle filesystems where the directory
+ * offset differences aren't the same as "d_reclen").
+ */
+#define NAME_OFFSET	offsetof (struct osf_dirent, d_name)
+
+struct osf_dirent {
+	unsigned int d_ino;
+	unsigned short d_reclen;
+	unsigned short d_namlen;
+	char d_name[1];
+};
+
+struct osf_dirent_callback {
+	struct dir_context ctx;
+	struct osf_dirent __user *dirent;
+	long __user *basep;
+	unsigned int count;
+	int error;
+};
+
+static int
+osf_filldir(struct dir_context *ctx, const char *name, int namlen,
+	    loff_t offset, u64 ino, unsigned int d_type)
+{
+	struct osf_dirent __user *dirent;
+	struct osf_dirent_callback *buf =
+		container_of(ctx, struct osf_dirent_callback, ctx);
+	unsigned int reclen = ALIGN(NAME_OFFSET + namlen + 1, sizeof(u32));
+	unsigned int d_ino;
+
+	buf->error = -EINVAL;	/* only used if we fail */
+	if (reclen > buf->count)
+		return -EINVAL;
+	d_ino = ino;
+	if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) {
+		buf->error = -EOVERFLOW;
+		return -EOVERFLOW;
+	}
+	if (buf->basep) {
+		if (put_user(offset, buf->basep))
+			goto Efault;
+		buf->basep = NULL;
+	}
+	dirent = buf->dirent;
+	if (put_user(d_ino, &dirent->d_ino) ||
+	    put_user(namlen, &dirent->d_namlen) ||
+	    put_user(reclen, &dirent->d_reclen) ||
+	    copy_to_user(dirent->d_name, name, namlen) ||
+	    put_user(0, dirent->d_name + namlen))
+		goto Efault;
+	dirent = (void __user *)dirent + reclen;
+	buf->dirent = dirent;
+	buf->count -= reclen;
+	return 0;
+Efault:
+	buf->error = -EFAULT;
+	return -EFAULT;
+}
+
+SYSCALL_DEFINE4(osf_getdirentries, unsigned int, fd,
+		struct osf_dirent __user *, dirent, unsigned int, count,
+		long __user *, basep)
+{
+	int error;
+	struct fd arg = fdget(fd);
+	struct osf_dirent_callback buf = {
+		.ctx.actor = osf_filldir,
+		.dirent = dirent,
+		.basep = basep,
+		.count = count
+	};
+
+	if (!arg.file)
+		return -EBADF;
+
+	error = iterate_dir(arg.file, &buf.ctx);
+	if (error >= 0)
+		error = buf.error;
+	if (count != buf.count)
+		error = count - buf.count;
+
+	fdput(arg);
+	return error;
+}
+
+#undef NAME_OFFSET
+
+SYSCALL_DEFINE6(osf_mmap, unsigned long, addr, unsigned long, len,
+		unsigned long, prot, unsigned long, flags, unsigned long, fd,
+		unsigned long, off)
+{
+	unsigned long ret = -EINVAL;
+
+#if 0
+	if (flags & (_MAP_HASSEMAPHORE | _MAP_INHERIT | _MAP_UNALIGNED))
+		printk("%s: unimplemented OSF mmap flags %04lx\n", 
+			current->comm, flags);
+#endif
+	if ((off + PAGE_ALIGN(len)) < off)
+		goto out;
+	if (off & ~PAGE_MASK)
+		goto out;
+	ret = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT);
+ out:
+	return ret;
+}
+
+struct osf_stat {
+	int		st_dev;
+	int		st_pad1;
+	unsigned	st_mode;
+	unsigned short	st_nlink;
+	short		st_nlink_reserved;
+	unsigned	st_uid;
+	unsigned	st_gid;
+	int		st_rdev;
+	int		st_ldev;
+	long		st_size;
+	int		st_pad2;
+	int		st_uatime;
+	int		st_pad3;
+	int		st_umtime;
+	int		st_pad4;
+	int		st_uctime;
+	int		st_pad5;
+	int		st_pad6;
+	unsigned	st_flags;
+	unsigned	st_gen;
+	long		st_spare[4];
+	unsigned	st_ino;
+	int		st_ino_reserved;
+	int		st_atime;
+	int		st_atime_reserved;
+	int		st_mtime;
+	int		st_mtime_reserved;
+	int		st_ctime;
+	int		st_ctime_reserved;
+	long		st_blksize;
+	long		st_blocks;
+};
+
+/*
+ * The OSF/1 statfs structure is much larger, but this should
+ * match the beginning, at least.
+ */
+struct osf_statfs {
+	short f_type;
+	short f_flags;
+	int f_fsize;
+	int f_bsize;
+	int f_blocks;
+	int f_bfree;
+	int f_bavail;
+	int f_files;
+	int f_ffree;
+	__kernel_fsid_t f_fsid;
+};
+
+struct osf_statfs64 {
+	short f_type;
+	short f_flags;
+	int f_pad1;
+	int f_pad2;
+	int f_pad3;
+	int f_pad4;
+	int f_pad5;
+	int f_pad6;
+	int f_pad7;
+	__kernel_fsid_t f_fsid;
+	u_short f_namemax;
+	short f_reserved1;
+	int f_spare[8];
+	char f_pad8[90];
+	char f_pad9[90];
+	long mount_info[10];
+	u_long f_flags2;
+	long f_spare2[14];
+	long f_fsize;
+	long f_bsize;
+	long f_blocks;
+	long f_bfree;
+	long f_bavail;
+	long f_files;
+	long f_ffree;
+};
+
+static int
+linux_to_osf_stat(struct kstat *lstat, struct osf_stat __user *osf_stat)
+{
+	struct osf_stat tmp = { 0 };
+
+	tmp.st_dev	= lstat->dev;
+	tmp.st_mode	= lstat->mode;
+	tmp.st_nlink	= lstat->nlink;
+	tmp.st_uid	= from_kuid_munged(current_user_ns(), lstat->uid);
+	tmp.st_gid	= from_kgid_munged(current_user_ns(), lstat->gid);
+	tmp.st_rdev	= lstat->rdev;
+	tmp.st_ldev	= lstat->rdev;
+	tmp.st_size	= lstat->size;
+	tmp.st_uatime	= lstat->atime.tv_nsec / 1000;
+	tmp.st_umtime	= lstat->mtime.tv_nsec / 1000;
+	tmp.st_uctime	= lstat->ctime.tv_nsec / 1000;
+	tmp.st_ino	= lstat->ino;
+	tmp.st_atime	= lstat->atime.tv_sec;
+	tmp.st_mtime	= lstat->mtime.tv_sec;
+	tmp.st_ctime	= lstat->ctime.tv_sec;
+	tmp.st_blksize	= lstat->blksize;
+	tmp.st_blocks	= lstat->blocks;
+
+	return copy_to_user(osf_stat, &tmp, sizeof(tmp)) ? -EFAULT : 0;
+}
+
+static int
+linux_to_osf_statfs(struct kstatfs *linux_stat, struct osf_statfs __user *osf_stat,
+		    unsigned long bufsiz)
+{
+	struct osf_statfs tmp_stat;
+
+	tmp_stat.f_type = linux_stat->f_type;
+	tmp_stat.f_flags = 0;	/* mount flags */
+	tmp_stat.f_fsize = linux_stat->f_frsize;
+	tmp_stat.f_bsize = linux_stat->f_bsize;
+	tmp_stat.f_blocks = linux_stat->f_blocks;
+	tmp_stat.f_bfree = linux_stat->f_bfree;
+	tmp_stat.f_bavail = linux_stat->f_bavail;
+	tmp_stat.f_files = linux_stat->f_files;
+	tmp_stat.f_ffree = linux_stat->f_ffree;
+	tmp_stat.f_fsid = linux_stat->f_fsid;
+	if (bufsiz > sizeof(tmp_stat))
+		bufsiz = sizeof(tmp_stat);
+	return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0;
+}
+
+static int
+linux_to_osf_statfs64(struct kstatfs *linux_stat, struct osf_statfs64 __user *osf_stat,
+		      unsigned long bufsiz)
+{
+	struct osf_statfs64 tmp_stat = { 0 };
+
+	tmp_stat.f_type = linux_stat->f_type;
+	tmp_stat.f_fsize = linux_stat->f_frsize;
+	tmp_stat.f_bsize = linux_stat->f_bsize;
+	tmp_stat.f_blocks = linux_stat->f_blocks;
+	tmp_stat.f_bfree = linux_stat->f_bfree;
+	tmp_stat.f_bavail = linux_stat->f_bavail;
+	tmp_stat.f_files = linux_stat->f_files;
+	tmp_stat.f_ffree = linux_stat->f_ffree;
+	tmp_stat.f_fsid = linux_stat->f_fsid;
+	if (bufsiz > sizeof(tmp_stat))
+		bufsiz = sizeof(tmp_stat);
+	return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0;
+}
+
+SYSCALL_DEFINE3(osf_statfs, const char __user *, pathname,
+		struct osf_statfs __user *, buffer, unsigned long, bufsiz)
+{
+	struct kstatfs linux_stat;
+	int error = user_statfs(pathname, &linux_stat);
+	if (!error)
+		error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz);
+	return error;	
+}
+
+SYSCALL_DEFINE2(osf_stat, char __user *, name, struct osf_stat __user *, buf)
+{
+	struct kstat stat;
+	int error;
+
+	error = vfs_stat(name, &stat);
+	if (error)
+		return error;
+
+	return linux_to_osf_stat(&stat, buf);
+}
+
+SYSCALL_DEFINE2(osf_lstat, char __user *, name, struct osf_stat __user *, buf)
+{
+	struct kstat stat;
+	int error;
+
+	error = vfs_lstat(name, &stat);
+	if (error)
+		return error;
+
+	return linux_to_osf_stat(&stat, buf);
+}
+
+SYSCALL_DEFINE2(osf_fstat, int, fd, struct osf_stat __user *, buf)
+{
+	struct kstat stat;
+	int error;
+
+	error = vfs_fstat(fd, &stat);
+	if (error)
+		return error;
+
+	return linux_to_osf_stat(&stat, buf);
+}
+
+SYSCALL_DEFINE3(osf_fstatfs, unsigned long, fd,
+		struct osf_statfs __user *, buffer, unsigned long, bufsiz)
+{
+	struct kstatfs linux_stat;
+	int error = fd_statfs(fd, &linux_stat);
+	if (!error)
+		error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz);
+	return error;
+}
+
+SYSCALL_DEFINE3(osf_statfs64, char __user *, pathname,
+		struct osf_statfs64 __user *, buffer, unsigned long, bufsiz)
+{
+	struct kstatfs linux_stat;
+	int error = user_statfs(pathname, &linux_stat);
+	if (!error)
+		error = linux_to_osf_statfs64(&linux_stat, buffer, bufsiz);
+	return error;
+}
+
+SYSCALL_DEFINE3(osf_fstatfs64, unsigned long, fd,
+		struct osf_statfs64 __user *, buffer, unsigned long, bufsiz)
+{
+	struct kstatfs linux_stat;
+	int error = fd_statfs(fd, &linux_stat);
+	if (!error)
+		error = linux_to_osf_statfs64(&linux_stat, buffer, bufsiz);
+	return error;
+}
+
+/*
+ * Uhh.. OSF/1 mount parameters aren't exactly obvious..
+ *
+ * Although to be frank, neither are the native Linux/i386 ones..
+ */
+struct ufs_args {
+	char __user *devname;
+	int flags;
+	uid_t exroot;
+};
+
+struct cdfs_args {
+	char __user *devname;
+	int flags;
+	uid_t exroot;
+
+	/* This has lots more here, which Linux handles with the option block
+	   but I'm too lazy to do the translation into ASCII.  */
+};
+
+struct procfs_args {
+	char __user *devname;
+	int flags;
+	uid_t exroot;
+};
+
+/*
+ * We can't actually handle ufs yet, so we translate UFS mounts to
+ * ext2fs mounts. I wouldn't mind a UFS filesystem, but the UFS
+ * layout is so braindead it's a major headache doing it.
+ *
+ * Just how long ago was it written? OTOH our UFS driver may be still
+ * unhappy with OSF UFS. [CHECKME]
+ */
+static int
+osf_ufs_mount(const char __user *dirname,
+	      struct ufs_args __user *args, int flags)
+{
+	int retval;
+	struct cdfs_args tmp;
+	struct filename *devname;
+
+	retval = -EFAULT;
+	if (copy_from_user(&tmp, args, sizeof(tmp)))
+		goto out;
+	devname = getname(tmp.devname);
+	retval = PTR_ERR(devname);
+	if (IS_ERR(devname))
+		goto out;
+	retval = do_mount(devname->name, dirname, "ext2", flags, NULL);
+	putname(devname);
+ out:
+	return retval;
+}
+
+static int
+osf_cdfs_mount(const char __user *dirname,
+	       struct cdfs_args __user *args, int flags)
+{
+	int retval;
+	struct cdfs_args tmp;
+	struct filename *devname;
+
+	retval = -EFAULT;
+	if (copy_from_user(&tmp, args, sizeof(tmp)))
+		goto out;
+	devname = getname(tmp.devname);
+	retval = PTR_ERR(devname);
+	if (IS_ERR(devname))
+		goto out;
+	retval = do_mount(devname->name, dirname, "iso9660", flags, NULL);
+	putname(devname);
+ out:
+	return retval;
+}
+
+static int
+osf_procfs_mount(const char __user *dirname,
+		 struct procfs_args __user *args, int flags)
+{
+	struct procfs_args tmp;
+
+	if (copy_from_user(&tmp, args, sizeof(tmp)))
+		return -EFAULT;
+
+	return do_mount("", dirname, "proc", flags, NULL);
+}
+
+SYSCALL_DEFINE4(osf_mount, unsigned long, typenr, const char __user *, path,
+		int, flag, void __user *, data)
+{
+	int retval;
+
+	switch (typenr) {
+	case 1:
+		retval = osf_ufs_mount(path, data, flag);
+		break;
+	case 6:
+		retval = osf_cdfs_mount(path, data, flag);
+		break;
+	case 9:
+		retval = osf_procfs_mount(path, data, flag);
+		break;
+	default:
+		retval = -EINVAL;
+		printk("osf_mount(%ld, %x)\n", typenr, flag);
+	}
+
+	return retval;
+}
+
+SYSCALL_DEFINE1(osf_utsname, char __user *, name)
+{
+	int error;
+
+	down_read(&uts_sem);
+	error = -EFAULT;
+	if (copy_to_user(name + 0, utsname()->sysname, 32))
+		goto out;
+	if (copy_to_user(name + 32, utsname()->nodename, 32))
+		goto out;
+	if (copy_to_user(name + 64, utsname()->release, 32))
+		goto out;
+	if (copy_to_user(name + 96, utsname()->version, 32))
+		goto out;
+	if (copy_to_user(name + 128, utsname()->machine, 32))
+		goto out;
+
+	error = 0;
+ out:
+	up_read(&uts_sem);	
+	return error;
+}
+
+SYSCALL_DEFINE0(getpagesize)
+{
+	return PAGE_SIZE;
+}
+
+SYSCALL_DEFINE0(getdtablesize)
+{
+	return sysctl_nr_open;
+}
+
+/*
+ * For compatibility with OSF/1 only.  Use utsname(2) instead.
+ */
+SYSCALL_DEFINE2(osf_getdomainname, char __user *, name, int, namelen)
+{
+	unsigned len;
+	int i;
+
+	if (!access_ok(VERIFY_WRITE, name, namelen))
+		return -EFAULT;
+
+	len = namelen;
+	if (len > 32)
+		len = 32;
+
+	down_read(&uts_sem);
+	for (i = 0; i < len; ++i) {
+		__put_user(utsname()->domainname[i], name + i);
+		if (utsname()->domainname[i] == '\0')
+			break;
+	}
+	up_read(&uts_sem);
+
+	return 0;
+}
+
+/*
+ * The following stuff should move into a header file should it ever
+ * be labeled "officially supported."  Right now, there is just enough
+ * support to avoid applications (such as tar) printing error
+ * messages.  The attributes are not really implemented.
+ */
+
+/*
+ * Values for Property list entry flag
+ */
+#define PLE_PROPAGATE_ON_COPY		0x1	/* cp(1) will copy entry
+						   by default */
+#define PLE_FLAG_MASK			0x1	/* Valid flag values */
+#define PLE_FLAG_ALL			-1	/* All flag value */
+
+struct proplistname_args {
+	unsigned int pl_mask;
+	unsigned int pl_numnames;
+	char **pl_names;
+};
+
+union pl_args {
+	struct setargs {
+		char __user *path;
+		long follow;
+		long nbytes;
+		char __user *buf;
+	} set;
+	struct fsetargs {
+		long fd;
+		long nbytes;
+		char __user *buf;
+	} fset;
+	struct getargs {
+		char __user *path;
+		long follow;
+		struct proplistname_args __user *name_args;
+		long nbytes;
+		char __user *buf;
+		int __user *min_buf_size;
+	} get;
+	struct fgetargs {
+		long fd;
+		struct proplistname_args __user *name_args;
+		long nbytes;
+		char __user *buf;
+		int __user *min_buf_size;
+	} fget;
+	struct delargs {
+		char __user *path;
+		long follow;
+		struct proplistname_args __user *name_args;
+	} del;
+	struct fdelargs {
+		long fd;
+		struct proplistname_args __user *name_args;
+	} fdel;
+};
+
+enum pl_code {
+	PL_SET = 1, PL_FSET = 2,
+	PL_GET = 3, PL_FGET = 4,
+	PL_DEL = 5, PL_FDEL = 6
+};
+
+SYSCALL_DEFINE2(osf_proplist_syscall, enum pl_code, code,
+		union pl_args __user *, args)
+{
+	long error;
+	int __user *min_buf_size_ptr;
+
+	switch (code) {
+	case PL_SET:
+		if (get_user(error, &args->set.nbytes))
+			error = -EFAULT;
+		break;
+	case PL_FSET:
+		if (get_user(error, &args->fset.nbytes))
+			error = -EFAULT;
+		break;
+	case PL_GET:
+		error = get_user(min_buf_size_ptr, &args->get.min_buf_size);
+		if (error)
+			break;
+		error = put_user(0, min_buf_size_ptr);
+		break;
+	case PL_FGET:
+		error = get_user(min_buf_size_ptr, &args->fget.min_buf_size);
+		if (error)
+			break;
+		error = put_user(0, min_buf_size_ptr);
+		break;
+	case PL_DEL:
+	case PL_FDEL:
+		error = 0;
+		break;
+	default:
+		error = -EOPNOTSUPP;
+		break;
+	};
+	return error;
+}
+
+SYSCALL_DEFINE2(osf_sigstack, struct sigstack __user *, uss,
+		struct sigstack __user *, uoss)
+{
+	unsigned long usp = rdusp();
+	unsigned long oss_sp = current->sas_ss_sp + current->sas_ss_size;
+	unsigned long oss_os = on_sig_stack(usp);
+	int error;
+
+	if (uss) {
+		void __user *ss_sp;
+
+		error = -EFAULT;
+		if (get_user(ss_sp, &uss->ss_sp))
+			goto out;
+
+		/* If the current stack was set with sigaltstack, don't
+		   swap stacks while we are on it.  */
+		error = -EPERM;
+		if (current->sas_ss_sp && on_sig_stack(usp))
+			goto out;
+
+		/* Since we don't know the extent of the stack, and we don't
+		   track onstack-ness, but rather calculate it, we must 
+		   presume a size.  Ho hum this interface is lossy.  */
+		current->sas_ss_sp = (unsigned long)ss_sp - SIGSTKSZ;
+		current->sas_ss_size = SIGSTKSZ;
+	}
+
+	if (uoss) {
+		error = -EFAULT;
+		if (! access_ok(VERIFY_WRITE, uoss, sizeof(*uoss))
+		    || __put_user(oss_sp, &uoss->ss_sp)
+		    || __put_user(oss_os, &uoss->ss_onstack))
+			goto out;
+	}
+
+	error = 0;
+ out:
+	return error;
+}
+
+SYSCALL_DEFINE3(osf_sysinfo, int, command, char __user *, buf, long, count)
+{
+	const char *sysinfo_table[] = {
+		utsname()->sysname,
+		utsname()->nodename,
+		utsname()->release,
+		utsname()->version,
+		utsname()->machine,
+		"alpha",	/* instruction set architecture */
+		"dummy",	/* hardware serial number */
+		"dummy",	/* hardware manufacturer */
+		"dummy",	/* secure RPC domain */
+	};
+	unsigned long offset;
+	const char *res;
+	long len, err = -EINVAL;
+
+	offset = command-1;
+	if (offset >= ARRAY_SIZE(sysinfo_table)) {
+		/* Digital UNIX has a few unpublished interfaces here */
+		printk("sysinfo(%d)", command);
+		goto out;
+	}
+
+	down_read(&uts_sem);
+	res = sysinfo_table[offset];
+	len = strlen(res)+1;
+	if ((unsigned long)len > (unsigned long)count)
+		len = count;
+	if (copy_to_user(buf, res, len))
+		err = -EFAULT;
+	else
+		err = 0;
+	up_read(&uts_sem);
+ out:
+	return err;
+}
+
+SYSCALL_DEFINE5(osf_getsysinfo, unsigned long, op, void __user *, buffer,
+		unsigned long, nbytes, int __user *, start, void __user *, arg)
+{
+	unsigned long w;
+	struct percpu_struct *cpu;
+
+	switch (op) {
+	case GSI_IEEE_FP_CONTROL:
+		/* Return current software fp control & status bits.  */
+		/* Note that DU doesn't verify available space here.  */
+
+ 		w = current_thread_info()->ieee_state & IEEE_SW_MASK;
+ 		w = swcr_update_status(w, rdfpcr());
+		if (put_user(w, (unsigned long __user *) buffer))
+			return -EFAULT;
+		return 0;
+
+	case GSI_IEEE_STATE_AT_SIGNAL:
+		/*
+		 * Not sure anybody will ever use this weird stuff.  These
+		 * ops can be used (under OSF/1) to set the fpcr that should
+		 * be used when a signal handler starts executing.
+		 */
+		break;
+
+ 	case GSI_UACPROC:
+		if (nbytes < sizeof(unsigned int))
+			return -EINVAL;
+		w = current_thread_info()->status & UAC_BITMASK;
+		if (put_user(w, (unsigned int __user *)buffer))
+			return -EFAULT;
+ 		return 1;
+
+	case GSI_PROC_TYPE:
+		if (nbytes < sizeof(unsigned long))
+			return -EINVAL;
+		cpu = (struct percpu_struct*)
+		  ((char*)hwrpb + hwrpb->processor_offset);
+		w = cpu->type;
+		if (put_user(w, (unsigned long  __user*)buffer))
+			return -EFAULT;
+		return 1;
+
+	case GSI_GET_HWRPB:
+		if (nbytes > sizeof(*hwrpb))
+			return -EINVAL;
+		if (copy_to_user(buffer, hwrpb, nbytes) != 0)
+			return -EFAULT;
+		return 1;
+
+	default:
+		break;
+	}
+
+	return -EOPNOTSUPP;
+}
+
+SYSCALL_DEFINE5(osf_setsysinfo, unsigned long, op, void __user *, buffer,
+		unsigned long, nbytes, int __user *, start, void __user *, arg)
+{
+	switch (op) {
+	case SSI_IEEE_FP_CONTROL: {
+		unsigned long swcr, fpcr;
+		unsigned int *state;
+
+		/* 
+		 * Alpha Architecture Handbook 4.7.7.3:
+		 * To be fully IEEE compiant, we must track the current IEEE
+		 * exception state in software, because spurious bits can be
+		 * set in the trap shadow of a software-complete insn.
+		 */
+
+		if (get_user(swcr, (unsigned long __user *)buffer))
+			return -EFAULT;
+		state = &current_thread_info()->ieee_state;
+
+		/* Update softare trap enable bits.  */
+		*state = (*state & ~IEEE_SW_MASK) | (swcr & IEEE_SW_MASK);
+
+		/* Update the real fpcr.  */
+		fpcr = rdfpcr() & FPCR_DYN_MASK;
+		fpcr |= ieee_swcr_to_fpcr(swcr);
+		wrfpcr(fpcr);
+
+		return 0;
+	}
+
+	case SSI_IEEE_RAISE_EXCEPTION: {
+		unsigned long exc, swcr, fpcr, fex;
+		unsigned int *state;
+
+		if (get_user(exc, (unsigned long __user *)buffer))
+			return -EFAULT;
+		state = &current_thread_info()->ieee_state;
+		exc &= IEEE_STATUS_MASK;
+
+		/* Update softare trap enable bits.  */
+ 		swcr = (*state & IEEE_SW_MASK) | exc;
+		*state |= exc;
+
+		/* Update the real fpcr.  */
+		fpcr = rdfpcr();
+		fpcr |= ieee_swcr_to_fpcr(swcr);
+		wrfpcr(fpcr);
+
+ 		/* If any exceptions set by this call, and are unmasked,
+		   send a signal.  Old exceptions are not signaled.  */
+		fex = (exc >> IEEE_STATUS_TO_EXCSUM_SHIFT) & swcr;
+ 		if (fex) {
+			siginfo_t info;
+			int si_code = 0;
+
+			if (fex & IEEE_TRAP_ENABLE_DNO) si_code = FPE_FLTUND;
+			if (fex & IEEE_TRAP_ENABLE_INE) si_code = FPE_FLTRES;
+			if (fex & IEEE_TRAP_ENABLE_UNF) si_code = FPE_FLTUND;
+			if (fex & IEEE_TRAP_ENABLE_OVF) si_code = FPE_FLTOVF;
+			if (fex & IEEE_TRAP_ENABLE_DZE) si_code = FPE_FLTDIV;
+			if (fex & IEEE_TRAP_ENABLE_INV) si_code = FPE_FLTINV;
+
+			info.si_signo = SIGFPE;
+			info.si_errno = 0;
+			info.si_code = si_code;
+			info.si_addr = NULL;  /* FIXME */
+ 			send_sig_info(SIGFPE, &info, current);
+ 		}
+		return 0;
+	}
+
+	case SSI_IEEE_STATE_AT_SIGNAL:
+	case SSI_IEEE_IGNORE_STATE_AT_SIGNAL:
+		/*
+		 * Not sure anybody will ever use this weird stuff.  These
+		 * ops can be used (under OSF/1) to set the fpcr that should
+		 * be used when a signal handler starts executing.
+		 */
+		break;
+
+ 	case SSI_NVPAIRS: {
+		unsigned __user *p = buffer;
+		unsigned i;
+		
+		for (i = 0, p = buffer; i < nbytes; ++i, p += 2) {
+			unsigned v, w, status;
+
+			if (get_user(v, p) || get_user(w, p + 1))
+ 				return -EFAULT;
+ 			switch (v) {
+ 			case SSIN_UACPROC:
+				w &= UAC_BITMASK;
+				status = current_thread_info()->status;
+				status = (status & ~UAC_BITMASK) | w;
+				current_thread_info()->status = status;
+ 				break;
+ 
+ 			default:
+ 				return -EOPNOTSUPP;
+ 			}
+ 		}
+ 		return 0;
+	}
+ 
+	case SSI_LMF:
+		return 0;
+
+	default:
+		break;
+	}
+
+	return -EOPNOTSUPP;
+}
+
+/* Translations due to the fact that OSF's time_t is an int.  Which
+   affects all sorts of things, like timeval and itimerval.  */
+
+extern struct timezone sys_tz;
+
+struct timeval32
+{
+    int tv_sec, tv_usec;
+};
+
+struct itimerval32
+{
+    struct timeval32 it_interval;
+    struct timeval32 it_value;
+};
+
+static inline long
+get_tv32(struct timeval *o, struct timeval32 __user *i)
+{
+	return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
+		(__get_user(o->tv_sec, &i->tv_sec) |
+		 __get_user(o->tv_usec, &i->tv_usec)));
+}
+
+static inline long
+put_tv32(struct timeval32 __user *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)));
+}
+
+static inline long
+get_it32(struct itimerval *o, struct itimerval32 __user *i)
+{
+	return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
+		(__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) |
+		 __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) |
+		 __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) |
+		 __get_user(o->it_value.tv_usec, &i->it_value.tv_usec)));
+}
+
+static inline long
+put_it32(struct itimerval32 __user *o, struct itimerval *i)
+{
+	return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
+		(__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) |
+		 __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) |
+		 __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) |
+		 __put_user(i->it_value.tv_usec, &o->it_value.tv_usec)));
+}
+
+static inline void
+jiffies_to_timeval32(unsigned long jiffies, struct timeval32 *value)
+{
+	value->tv_usec = (jiffies % HZ) * (1000000L / HZ);
+	value->tv_sec = jiffies / HZ;
+}
+
+SYSCALL_DEFINE2(osf_gettimeofday, struct timeval32 __user *, tv,
+		struct timezone __user *, 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;
+}
+
+SYSCALL_DEFINE2(osf_settimeofday, struct timeval32 __user *, tv,
+		struct timezone __user *, tz)
+{
+	struct timespec kts;
+	struct timezone ktz;
+
+ 	if (tv) {
+		if (get_tv32((struct timeval *)&kts, tv))
+			return -EFAULT;
+		kts.tv_nsec *= 1000;
+	}
+	if (tz) {
+		if (copy_from_user(&ktz, tz, sizeof(*tz)))
+			return -EFAULT;
+	}
+
+	return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
+}
+
+SYSCALL_DEFINE2(osf_getitimer, int, which, struct itimerval32 __user *, it)
+{
+	struct itimerval kit;
+	int error;
+
+	error = do_getitimer(which, &kit);
+	if (!error && put_it32(it, &kit))
+		error = -EFAULT;
+
+	return error;
+}
+
+SYSCALL_DEFINE3(osf_setitimer, int, which, struct itimerval32 __user *, in,
+		struct itimerval32 __user *, out)
+{
+	struct itimerval kin, kout;
+	int error;
+
+	if (in) {
+		if (get_it32(&kin, in))
+			return -EFAULT;
+	} else
+		memset(&kin, 0, sizeof(kin));
+
+	error = do_setitimer(which, &kin, out ? &kout : NULL);
+	if (error || !out)
+		return error;
+
+	if (put_it32(out, &kout))
+		return -EFAULT;
+
+	return 0;
+
+}
+
+SYSCALL_DEFINE2(osf_utimes, const char __user *, filename,
+		struct timeval32 __user *, tvs)
+{
+	struct timespec tv[2];
+
+	if (tvs) {
+		struct timeval ktvs[2];
+		if (get_tv32(&ktvs[0], &tvs[0]) ||
+		    get_tv32(&ktvs[1], &tvs[1]))
+			return -EFAULT;
+
+		if (ktvs[0].tv_usec < 0 || ktvs[0].tv_usec >= 1000000 ||
+		    ktvs[1].tv_usec < 0 || ktvs[1].tv_usec >= 1000000)
+			return -EINVAL;
+
+		tv[0].tv_sec = ktvs[0].tv_sec;
+		tv[0].tv_nsec = 1000 * ktvs[0].tv_usec;
+		tv[1].tv_sec = ktvs[1].tv_sec;
+		tv[1].tv_nsec = 1000 * ktvs[1].tv_usec;
+	}
+
+	return do_utimes(AT_FDCWD, filename, tvs ? tv : NULL, 0);
+}
+
+SYSCALL_DEFINE5(osf_select, int, n, fd_set __user *, inp, fd_set __user *, outp,
+		fd_set __user *, exp, struct timeval32 __user *, tvp)
+{
+	struct timespec end_time, *to = NULL;
+	if (tvp) {
+		time_t sec, usec;
+
+		to = &end_time;
+
+		if (!access_ok(VERIFY_READ, tvp, sizeof(*tvp))
+		    || __get_user(sec, &tvp->tv_sec)
+		    || __get_user(usec, &tvp->tv_usec)) {
+		    	return -EFAULT;
+		}
+
+		if (sec < 0 || usec < 0)
+			return -EINVAL;
+
+		if (poll_select_set_timeout(to, sec, usec * NSEC_PER_USEC))
+			return -EINVAL;		
+
+	}
+
+	/* OSF does not copy back the remaining time.  */
+	return core_sys_select(n, inp, outp, exp, to);
+}
+
+struct rusage32 {
+	struct timeval32 ru_utime;	/* user time used */
+	struct timeval32 ru_stime;	/* system time used */
+	long	ru_maxrss;		/* maximum resident set size */
+	long	ru_ixrss;		/* integral shared memory size */
+	long	ru_idrss;		/* integral unshared data size */
+	long	ru_isrss;		/* integral unshared stack size */
+	long	ru_minflt;		/* page reclaims */
+	long	ru_majflt;		/* page faults */
+	long	ru_nswap;		/* swaps */
+	long	ru_inblock;		/* block input operations */
+	long	ru_oublock;		/* block output operations */
+	long	ru_msgsnd;		/* messages sent */
+	long	ru_msgrcv;		/* messages received */
+	long	ru_nsignals;		/* signals received */
+	long	ru_nvcsw;		/* voluntary context switches */
+	long	ru_nivcsw;		/* involuntary " */
+};
+
+SYSCALL_DEFINE2(osf_getrusage, int, who, struct rusage32 __user *, ru)
+{
+	struct rusage32 r;
+	cputime_t utime, stime;
+
+	if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN)
+		return -EINVAL;
+
+	memset(&r, 0, sizeof(r));
+	switch (who) {
+	case RUSAGE_SELF:
+		task_cputime(current, &utime, &stime);
+		jiffies_to_timeval32(utime, &r.ru_utime);
+		jiffies_to_timeval32(stime, &r.ru_stime);
+		r.ru_minflt = current->min_flt;
+		r.ru_majflt = current->maj_flt;
+		break;
+	case RUSAGE_CHILDREN:
+		jiffies_to_timeval32(current->signal->cutime, &r.ru_utime);
+		jiffies_to_timeval32(current->signal->cstime, &r.ru_stime);
+		r.ru_minflt = current->signal->cmin_flt;
+		r.ru_majflt = current->signal->cmaj_flt;
+		break;
+	}
+
+	return copy_to_user(ru, &r, sizeof(r)) ? -EFAULT : 0;
+}
+
+SYSCALL_DEFINE4(osf_wait4, pid_t, pid, int __user *, ustatus, int, options,
+		struct rusage32 __user *, ur)
+{
+	struct rusage r;
+	long ret, err;
+	unsigned int status = 0;
+	mm_segment_t old_fs;
+
+	if (!ur)
+		return sys_wait4(pid, ustatus, options, NULL);
+
+	old_fs = get_fs();
+		
+	set_fs (KERNEL_DS);
+	ret = sys_wait4(pid, (unsigned int __user *) &status, options,
+			(struct rusage __user *) &r);
+	set_fs (old_fs);
+
+	if (!access_ok(VERIFY_WRITE, ur, sizeof(*ur)))
+		return -EFAULT;
+
+	err = 0;
+	err |= put_user(status, ustatus);
+	err |= __put_user(r.ru_utime.tv_sec, &ur->ru_utime.tv_sec);
+	err |= __put_user(r.ru_utime.tv_usec, &ur->ru_utime.tv_usec);
+	err |= __put_user(r.ru_stime.tv_sec, &ur->ru_stime.tv_sec);
+	err |= __put_user(r.ru_stime.tv_usec, &ur->ru_stime.tv_usec);
+	err |= __put_user(r.ru_maxrss, &ur->ru_maxrss);
+	err |= __put_user(r.ru_ixrss, &ur->ru_ixrss);
+	err |= __put_user(r.ru_idrss, &ur->ru_idrss);
+	err |= __put_user(r.ru_isrss, &ur->ru_isrss);
+	err |= __put_user(r.ru_minflt, &ur->ru_minflt);
+	err |= __put_user(r.ru_majflt, &ur->ru_majflt);
+	err |= __put_user(r.ru_nswap, &ur->ru_nswap);
+	err |= __put_user(r.ru_inblock, &ur->ru_inblock);
+	err |= __put_user(r.ru_oublock, &ur->ru_oublock);
+	err |= __put_user(r.ru_msgsnd, &ur->ru_msgsnd);
+	err |= __put_user(r.ru_msgrcv, &ur->ru_msgrcv);
+	err |= __put_user(r.ru_nsignals, &ur->ru_nsignals);
+	err |= __put_user(r.ru_nvcsw, &ur->ru_nvcsw);
+	err |= __put_user(r.ru_nivcsw, &ur->ru_nivcsw);
+
+	return err ? err : ret;
+}
+
+/*
+ * I don't know what the parameters are: the first one
+ * seems to be a timeval pointer, and I suspect the second
+ * one is the time remaining.. Ho humm.. No documentation.
+ */
+SYSCALL_DEFINE2(osf_usleep_thread, struct timeval32 __user *, sleep,
+		struct timeval32 __user *, remain)
+{
+	struct timeval tmp;
+	unsigned long ticks;
+
+	if (get_tv32(&tmp, sleep))
+		goto fault;
+
+	ticks = timeval_to_jiffies(&tmp);
+
+	ticks = schedule_timeout_interruptible(ticks);
+
+	if (remain) {
+		jiffies_to_timeval(ticks, &tmp);
+		if (put_tv32(remain, &tmp))
+			goto fault;
+	}
+	
+	return 0;
+ fault:
+	return -EFAULT;
+}
+
+
+struct timex32 {
+	unsigned int modes;	/* mode selector */
+	long offset;		/* time offset (usec) */
+	long freq;		/* frequency offset (scaled ppm) */
+	long maxerror;		/* maximum error (usec) */
+	long esterror;		/* estimated error (usec) */
+	int status;		/* clock command/status */
+	long constant;		/* pll time constant */
+	long precision;		/* clock precision (usec) (read only) */
+	long tolerance;		/* clock frequency tolerance (ppm)
+				 * (read only)
+				 */
+	struct timeval32 time;	/* (read only) */
+	long tick;		/* (modified) usecs between clock ticks */
+
+	long ppsfreq;           /* pps frequency (scaled ppm) (ro) */
+	long jitter;            /* pps jitter (us) (ro) */
+	int shift;              /* interval duration (s) (shift) (ro) */
+	long stabil;            /* pps stability (scaled ppm) (ro) */
+	long jitcnt;            /* jitter limit exceeded (ro) */
+	long calcnt;            /* calibration intervals (ro) */
+	long errcnt;            /* calibration errors (ro) */
+	long 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;
+};
+
+SYSCALL_DEFINE1(old_adjtimex, struct timex32 __user *, txc_p)
+{
+        struct timex txc;
+	int ret;
+
+	/* copy relevant bits of struct timex. */
+	if (copy_from_user(&txc, txc_p, offsetof(struct timex32, time)) ||
+	    copy_from_user(&txc.tick, &txc_p->tick, sizeof(struct timex32) - 
+			   offsetof(struct timex32, time)))
+	  return -EFAULT;
+
+	ret = do_adjtimex(&txc);	
+	if (ret < 0)
+	  return ret;
+	
+	/* copy back to timex32 */
+	if (copy_to_user(txc_p, &txc, offsetof(struct timex32, time)) ||
+	    (copy_to_user(&txc_p->tick, &txc.tick, sizeof(struct timex32) - 
+			  offsetof(struct timex32, tick))) ||
+	    (put_tv32(&txc_p->time, &txc.time)))
+	  return -EFAULT;
+
+	return ret;
+}
+
+/* Get an address range which is currently unmapped.  Similar to the
+   generic version except that we know how to honor ADDR_LIMIT_32BIT.  */
+
+static unsigned long
+arch_get_unmapped_area_1(unsigned long addr, unsigned long len,
+		         unsigned long limit)
+{
+	struct vm_unmapped_area_info info;
+
+	info.flags = 0;
+	info.length = len;
+	info.low_limit = addr;
+	info.high_limit = limit;
+	info.align_mask = 0;
+	info.align_offset = 0;
+	return vm_unmapped_area(&info);
+}
+
+unsigned long
+arch_get_unmapped_area(struct file *filp, unsigned long addr,
+		       unsigned long len, unsigned long pgoff,
+		       unsigned long flags)
+{
+	unsigned long limit;
+
+	/* "32 bit" actually means 31 bit, since pointers sign extend.  */
+	if (current->personality & ADDR_LIMIT_32BIT)
+		limit = 0x80000000;
+	else
+		limit = TASK_SIZE;
+
+	if (len > limit)
+		return -ENOMEM;
+
+	if (flags & MAP_FIXED)
+		return addr;
+
+	/* First, see if the given suggestion fits.
+
+	   The OSF/1 loader (/sbin/loader) relies on us returning an
+	   address larger than the requested if one exists, which is
+	   a terribly broken way to program.
+
+	   That said, I can see the use in being able to suggest not
+	   merely specific addresses, but regions of memory -- perhaps
+	   this feature should be incorporated into all ports?  */
+
+	if (addr) {
+		addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit);
+		if (addr != (unsigned long) -ENOMEM)
+			return addr;
+	}
+
+	/* Next, try allocating at TASK_UNMAPPED_BASE.  */
+	addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE),
+					 len, limit);
+	if (addr != (unsigned long) -ENOMEM)
+		return addr;
+
+	/* Finally, try allocating in low memory.  */
+	addr = arch_get_unmapped_area_1 (PAGE_SIZE, len, limit);
+
+	return addr;
+}
+
+#ifdef CONFIG_OSF4_COMPAT
+
+/* Clear top 32 bits of iov_len in the user's buffer for
+   compatibility with old versions of OSF/1 where iov_len
+   was defined as int. */
+static int
+osf_fix_iov_len(const struct iovec __user *iov, unsigned long count)
+{
+	unsigned long i;
+
+	for (i = 0 ; i < count ; i++) {
+		int __user *iov_len_high = (int __user *)&iov[i].iov_len + 1;
+
+		if (put_user(0, iov_len_high))
+			return -EFAULT;
+	}
+	return 0;
+}
+
+SYSCALL_DEFINE3(osf_readv, unsigned long, fd,
+		const struct iovec __user *, vector, unsigned long, count)
+{
+	if (unlikely(personality(current->personality) == PER_OSF4))
+		if (osf_fix_iov_len(vector, count))
+			return -EFAULT;
+	return sys_readv(fd, vector, count);
+}
+
+SYSCALL_DEFINE3(osf_writev, unsigned long, fd,
+		const struct iovec __user *, vector, unsigned long, count)
+{
+	if (unlikely(personality(current->personality) == PER_OSF4))
+		if (osf_fix_iov_len(vector, count))
+			return -EFAULT;
+	return sys_writev(fd, vector, count);
+}
+
+#endif
+
+SYSCALL_DEFINE2(osf_getpriority, int, which, int, who)
+{
+	int prio = sys_getpriority(which, who);
+	if (prio >= 0) {
+		/* Return value is the unbiased priority, i.e. 20 - prio.
+		   This does result in negative return values, so signal
+		   no error */
+		force_successful_syscall_return();
+		prio = 20 - prio;
+	}
+	return prio;
+}
+
+SYSCALL_DEFINE0(getxuid)
+{
+	current_pt_regs()->r20 = sys_geteuid();
+	return sys_getuid();
+}
+
+SYSCALL_DEFINE0(getxgid)
+{
+	current_pt_regs()->r20 = sys_getegid();
+	return sys_getgid();
+}
+
+SYSCALL_DEFINE0(getxpid)
+{
+	current_pt_regs()->r20 = sys_getppid();
+	return sys_getpid();
+}
+
+SYSCALL_DEFINE0(alpha_pipe)
+{
+	int fd[2];
+	int res = do_pipe_flags(fd, 0);
+	if (!res) {
+		/* The return values are in $0 and $20.  */
+		current_pt_regs()->r20 = fd[1];
+		res = fd[0];
+	}
+	return res;
+}
+
+SYSCALL_DEFINE1(sethae, unsigned long, val)
+{
+	current_pt_regs()->hae = val;
+	return 0;
+}