patch-2.1.44 linux/arch/sparc64/kernel/sys_sunos32.c

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diff -u --recursive --new-file v2.1.43/linux/arch/sparc64/kernel/sys_sunos32.c linux/arch/sparc64/kernel/sys_sunos32.c
@@ -0,0 +1,1468 @@
+/* $Id: sys_sunos32.c,v 1.2 1997/07/05 07:09:16 davem Exp $
+ * sys_sunos32.c: SunOS binary compatability layer on sparc64.
+ *
+ * Copyright (C) 1995, 1996, 1997 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1995 Miguel de Icaza (miguel@nuclecu.unam.mx)
+ *
+ * Based upon preliminary work which is:
+ *
+ * Copyright (C) 1995 Adrian M. Rodriguez (adrian@remus.rutgers.edu)
+ */
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/mman.h>
+#include <linux/mm.h>
+#include <linux/swap.h>
+#include <linux/fs.h>
+#include <linux/resource.h>
+#include <linux/ipc.h>
+#include <linux/shm.h>
+#include <linux/msg.h>
+#include <linux/sem.h>
+#include <linux/signal.h>
+#include <linux/uio.h>
+#include <linux/utsname.h>
+#include <linux/fs.h>
+#include <linux/major.h>
+#include <linux/stat.h>
+#include <linux/malloc.h>
+#include <linux/pagemap.h>
+#include <linux/errno.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+
+#include <asm/uaccess.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/pconf.h>
+#include <asm/idprom.h> /* for gethostid() */
+#include <asm/unistd.h>
+#include <asm/system.h>
+
+/* For the nfs mount emulation */
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/nfs.h>
+#include <linux/nfs_mount.h>
+
+/* for sunos_select */
+#include <linux/time.h>
+#include <linux/personality.h>
+
+#define A(x) ((unsigned long)x)
+
+#define SUNOS_NR_OPEN	256
+
+extern unsigned long get_unmapped_area(unsigned long addr, unsigned long len);
+
+asmlinkage u32 sunos_mmap(u32 addr, u32 len, u32 prot, u32 flags, u32 fd, u32 off)
+{
+	struct file *file = NULL;
+	unsigned long retval, ret_type;
+
+	lock_kernel();
+	current->personality |= PER_BSD;
+	if(flags & MAP_NORESERVE) {
+		printk("%s:  unimplemented SunOS MAP_NORESERVE mmap() flag\n",
+		       current->comm);
+		flags &= ~MAP_NORESERVE;
+	}
+	retval = -EBADF;
+	if(!(flags & MAP_ANONYMOUS))
+		if(fd >= SUNOS_NR_OPEN || !(file = current->files->fd[fd]))
+			goto out;
+	retval = -ENOMEM;
+	if(!(flags & MAP_FIXED) && !addr) {
+		unsigned long attempt = get_unmapped_area(addr, len);
+		if(!attempt || (attempt >= 0xf0000000UL))
+			goto out;
+		addr = (u32) attempt;
+	}
+	if(MAJOR(file->f_inode->i_rdev) == MEM_MAJOR &&
+	   MINOR(file->f_inode->i_rdev) == 5) {
+		flags |= MAP_ANONYMOUS;
+		file = 0;
+	}
+	if(!(flags & MAP_FIXED))
+		addr = 0;
+	ret_type = flags & _MAP_NEW;
+	flags &= ~_MAP_NEW;
+
+	retval = do_mmap(file,
+			 (unsigned long) addr, (unsigned long) len,
+			 (unsigned long) prot, (unsigned long) flags,
+			 (unsigned long) off);
+	if(!ret_type)
+		retval = ((retval < 0xf0000000) ? 0 : retval);
+out:
+	unlock_kernel();
+	return (u32) retval;
+}
+
+asmlinkage int sunos_mctl(u32 addr, u32 len, int function, u32 arg)
+{
+	return 0;
+}
+
+asmlinkage int sunos_brk(u32 baddr)
+{
+	int freepages, retval = -ENOMEM;
+	unsigned long rlim;
+	unsigned long newbrk, oldbrk, brk = (unsigned long) baddr;
+
+	lock_kernel();
+	if (brk < current->mm->end_code)
+		goto out;
+	newbrk = PAGE_ALIGN(brk);
+	oldbrk = PAGE_ALIGN(current->mm->brk);
+	retval = 0;
+	if (oldbrk == newbrk) {
+		current->mm->brk = brk;
+		goto out;
+	}
+	/* Always allow shrinking brk. */
+	if (brk <= current->mm->brk) {
+		current->mm->brk = brk;
+		do_munmap(newbrk, oldbrk-newbrk);
+		goto out;
+	}
+	/* Check against rlimit and stack.. */
+	retval = -ENOMEM;
+	rlim = current->rlim[RLIMIT_DATA].rlim_cur;
+	if (rlim >= RLIM_INFINITY)
+		rlim = ~0;
+	if (brk - current->mm->end_code > rlim)
+		goto out;
+	/* Check against existing mmap mappings. */
+	if (find_vma_intersection(current->mm, oldbrk, newbrk+PAGE_SIZE))
+		goto out;
+	/* stupid algorithm to decide if we have enough memory: while
+	 * simple, it hopefully works in most obvious cases.. Easy to
+	 * fool it, but this should catch most mistakes.
+	 */
+	freepages = buffermem >> PAGE_SHIFT;
+        freepages += page_cache_size;
+	freepages >>= 1;
+	freepages += nr_free_pages;
+	freepages += nr_swap_pages;
+	freepages -= num_physpages >> 4;
+	freepages -= (newbrk-oldbrk) >> PAGE_SHIFT;
+	if (freepages < 0)
+		goto out;
+	/* Ok, we have probably got enough memory - let it rip. */
+	current->mm->brk = brk;
+	do_mmap(NULL, oldbrk, newbrk-oldbrk,
+		PROT_READ|PROT_WRITE|PROT_EXEC,
+		MAP_FIXED|MAP_PRIVATE, 0);
+	retval = 0;
+out:
+	unlock_kernel();
+	return retval;
+}
+
+asmlinkage u32 sunos_sbrk(int increment)
+{
+	int error, oldbrk;
+
+	/* This should do it hopefully... */
+	lock_kernel();
+	oldbrk = (int)current->mm->brk;
+	error = sunos_brk(((int) current->mm->brk) + increment);
+	if(!error)
+		error = oldbrk;
+	unlock_kernel();
+	return error;
+}
+
+asmlinkage u32 sunos_sstk(int increment)
+{
+	lock_kernel();
+	printk("%s: Call to sunos_sstk(increment<%d>) is unsupported\n",
+	       current->comm, increment);
+	unlock_kernel();
+	return (u32)-1;
+}
+
+/* Give hints to the kernel as to what paging strategy to use...
+ * Completely bogus, don't remind me.
+ */
+#define VA_NORMAL     0 /* Normal vm usage expected */
+#define VA_ABNORMAL   1 /* Abnormal/random vm usage probable */
+#define VA_SEQUENTIAL 2 /* Accesses will be of a sequential nature */
+#define VA_INVALIDATE 3 /* Page table entries should be flushed ??? */
+static char *vstrings[] = {
+	"VA_NORMAL",
+	"VA_ABNORMAL",
+	"VA_SEQUENTIAL",
+	"VA_INVALIDATE",
+};
+
+asmlinkage void sunos_vadvise(u32 strategy)
+{
+	/* I wanna see who uses this... */
+	lock_kernel();
+	printk("%s: Advises us to use %s paging strategy\n",
+	       current->comm,
+	       strategy <= 3 ? vstrings[strategy] : "BOGUS");
+	unlock_kernel();
+}
+
+/* Same as vadvise, and just as bogus, but for a range of virtual
+ * process address space.
+ */
+#define MADV_NORMAL      0 /* Nothing special... */
+#define MADV_RANDOM      1 /* I am emacs... */
+#define MADV_SEQUENTIAL  2 /* I am researcher code... */
+#define MADV_WILLNEED    3 /* Pages in this range will be needed */
+#define MADV_DONTNEED    4 /* Pages in this range won't be needed */
+
+static char *mstrings[] = {
+	"MADV_NORMAL",
+	"MADV_RANDOM",
+	"MADV_SEQUENTIAL",
+	"MADV_WILLNEED",
+	"MADV_DONTNEED",
+};
+
+asmlinkage void sunos_madvise(u32 address, u32 len, u32 strategy)
+{
+	/* I wanna see who uses this... */
+	lock_kernel();
+	printk("%s: Advises us to use %s paging strategy for addr<%08x> len<%08x>\n",
+	       current->comm, strategy <= 4 ? mstrings[strategy] : "BOGUS",
+	       address, len);
+	unlock_kernel();
+}
+
+/* Places into character array, the status of all the pages in the passed
+ * range from 'addr' to 'addr + len'.  -1 on failure, 0 on success...
+ * The encoding in each character is:
+ * low-bit is zero == Page is not in physical ram right now
+ * low-bit is one  == Page is currently residing in core
+ * All other bits are undefined within the character so there...
+ * Also, if you try to get stats on an area outside of the user vm area
+ * *or* the passed base address is not aligned on a page boundary you
+ * get an error.
+ */
+asmlinkage int sunos_mincore(u32 addr, u32 len, u32 u_array)
+{
+	pgd_t *pgdp;
+	pmd_t *pmdp;
+	pte_t *ptep;
+	unsigned long limit;
+	int num_pages, pnum, retval = -EINVAL;
+	char *array = (char *)A(u_array);
+
+	lock_kernel();
+	if(addr & ~(4096))
+		goto out;
+	num_pages = (len / 4096);
+	retval = -EFAULT;
+	if(verify_area(VERIFY_WRITE, array, num_pages))
+		goto out;
+	retval = -ENOMEM;
+	if((addr >= 0xf0000000) || ((addr + len) > 0xf0000000))
+		goto out; /* I'm sure you're curious about kernel mappings.. */
+	/* Wheee, go through pte's */
+	pnum = 0;
+	for(limit = addr + len; addr < limit; addr += 4096, pnum++) {
+		pgdp = pgd_offset(current->mm, addr);
+		if(pgd_none(*pgdp))
+			goto out; /* As per SunOS manpage */
+		pmdp = pmd_offset(pgdp, addr);
+		if(pmd_none(*pmdp))
+			goto out; /* As per SunOS manpage */
+		ptep = pte_offset(pmdp, addr);
+		if(pte_none(*ptep))
+			goto out; /* As per SunOS manpage */
+		/* Page in core or Swapped page? */
+		__put_user((pte_present(*ptep) ? 1 : 0), &array[pnum]);
+	}
+	retval = 0; /* Success... I think... */
+out:
+	unlock_kernel();
+	return retval;
+}
+
+/* This just wants the soft limit (ie. rlim_cur element) of the RLIMIT_NOFILE
+ * resource limit and is for backwards compatibility with older sunos
+ * revs.
+ */
+asmlinkage int sunos_getdtablesize(void)
+{
+	return SUNOS_NR_OPEN;
+}
+
+#define _S(nr) (1<<((nr)-1))
+
+#define _BLOCKABLE (~(_S(SIGKILL) | _S(SIGSTOP)))
+
+asmlinkage u32 sunos_sigblock(u32 blk_mask)
+{
+	unsigned long flags;
+	u32 old;
+
+	lock_kernel();
+	save_and_cli(flags);
+	old = (u32) current->blocked;
+	current->blocked |= (blk_mask & _BLOCKABLE);
+	restore_flags(flags);
+	unlock_kernel();
+	return old;
+}
+
+asmlinkage u32 sunos_sigsetmask(u32 newmask)
+{
+	unsigned long flags;
+	u32 retval;
+
+	lock_kernel();
+	save_and_cli(flags);
+	retval = (u32) current->blocked;
+	current->blocked = (newmask & _BLOCKABLE);
+	restore_flags(flags);
+	unlock_kernel();
+	return retval;
+}
+
+/* SunOS getdents is very similar to the newer Linux (iBCS2 compliant)    */
+/* getdents system call, the format of the structure just has a different */
+/* layout (d_off+d_ino instead of d_ino+d_off) */
+struct sunos_dirent {
+    s32		d_off;
+    u32		d_ino;
+    u16		d_reclen;
+    u16		d_namlen;
+    char	d_name[1];
+};
+
+struct sunos_dirent_callback {
+    struct sunos_dirent *curr;
+    struct sunos_dirent *previous;
+    int count;
+    int error;
+};
+
+#define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de)))
+#define ROUND_UP(x) (((x)+sizeof(s32)-1) & ~(sizeof(s32)-1))
+
+static int sunos_filldir(void * __buf, const char * name, int namlen,
+			 off_t offset, ino_t ino)
+{
+	struct sunos_dirent * dirent;
+	struct sunos_dirent_callback * buf = (struct sunos_dirent_callback *) __buf;
+	int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1);
+
+	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->curr;
+	buf->previous = dirent;
+	put_user(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);
+	((char *) dirent) += reclen;
+	buf->curr = dirent;
+	buf->count -= reclen;
+	return 0;
+}
+
+asmlinkage int sunos_getdents(unsigned int fd, u32 u_dirent, int cnt)
+{
+	struct file * file;
+	struct sunos_dirent * lastdirent;
+	struct sunos_dirent_callback buf;
+	int error = -EBADF;
+	void *dirent = (void *)A(u_dirent);
+
+	lock_kernel();
+	if (fd >= SUNOS_NR_OPEN || !(file = current->files->fd[fd]))
+		goto out;
+	error = -ENOTDIR;
+	if (!file->f_op || !file->f_op->readdir)
+		goto out;
+	error = -EINVAL;
+	if(cnt < (sizeof(struct sunos_dirent) + 255))
+		goto out;
+
+	buf.curr = (struct sunos_dirent *) dirent;
+	buf.previous = NULL;
+	buf.count = cnt;
+	buf.error = 0;
+	error = file->f_op->readdir(file->f_inode, file, &buf, sunos_filldir);
+	if (error < 0)
+		goto out;
+	lastdirent = buf.previous;
+	if (!lastdirent) {
+		error = buf.error;
+	} else {
+		put_user(file->f_pos, &lastdirent->d_off);
+		error = cnt - buf.count;
+	}
+out:
+	unlock_kernel();
+	return error;
+}
+
+/* Old sunos getdirentries, severely broken compatibility stuff here. */
+struct sunos_direntry {
+    u32		d_ino;
+    u16		d_reclen;
+    u16		d_namlen;
+    char	d_name[1];
+};
+
+struct sunos_direntry_callback {
+    struct sunos_direntry *curr;
+    struct sunos_direntry *previous;
+    int count;
+    int error;
+};
+
+static int sunos_filldirentry(void * __buf, const char * name, int namlen,
+			      off_t offset, ino_t ino)
+{
+	struct sunos_direntry * dirent;
+	struct sunos_direntry_callback * buf = (struct sunos_direntry_callback *) __buf;
+	int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1);
+
+	buf->error = -EINVAL;	/* only used if we fail.. */
+	if (reclen > buf->count)
+		return -EINVAL;
+	dirent = buf->previous;
+	dirent = buf->curr;
+	buf->previous = dirent;
+	put_user(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);
+	((char *) dirent) += reclen;
+	buf->curr = dirent;
+	buf->count -= reclen;
+	return 0;
+}
+
+asmlinkage int sunos_getdirentries(unsigned int fd, u32 u_dirent,
+				   int cnt, u32 u_basep)
+{
+	struct file * file;
+	struct sunos_direntry * lastdirent;
+	struct sunos_direntry_callback buf;
+	int error = -EBADF;
+	void *dirent = (void *) A(u_dirent);
+	unsigned int *basep = (unsigned int *)A(u_basep);
+
+	lock_kernel();
+	if (fd >= SUNOS_NR_OPEN || !(file = current->files->fd[fd]))
+		goto out;
+	error = -ENOTDIR;
+	if (!file->f_op || !file->f_op->readdir)
+		goto out;
+	error = -EINVAL;
+	if(cnt < (sizeof(struct sunos_direntry) + 255))
+		goto out;
+
+	buf.curr = (struct sunos_direntry *) dirent;
+	buf.previous = NULL;
+	buf.count = cnt;
+	buf.error = 0;
+	error = file->f_op->readdir(file->f_inode, file, &buf, sunos_filldirentry);
+	if (error < 0)
+		goto out;
+	lastdirent = buf.previous;
+	if (!lastdirent) {
+		error = buf.error;
+	} else {
+		put_user(file->f_pos, basep);
+		error = cnt - buf.count;
+	}
+out:
+	unlock_kernel();
+	return error;
+}
+
+asmlinkage int sunos_getdomainname(u32 u_name, int len)
+{
+        int nlen = strlen(system_utsname.domainname);
+	int ret = -EFAULT;
+	char *name = (char *)A(u_name);
+
+	lock_kernel();
+        if (nlen < len)
+                len = nlen;
+
+	if(len > __NEW_UTS_LEN)
+		goto out;
+	if(copy_to_user(name, system_utsname.domainname, len))
+		goto out;
+	ret = 0;
+out:
+	unlock_kernel();
+	return ret;
+}
+
+struct sunos_utsname {
+	char sname[9];
+	char nname[9];
+	char nnext[56];
+	char rel[9];
+	char ver[9];
+	char mach[9];
+};
+
+asmlinkage int sunos_uname(u32 u_name)
+{
+	struct sunos_utsname *name = (struct sunos_utsname *)A(u_name);
+	int ret = -EFAULT;
+
+	lock_kernel();
+	if(!name)
+		goto out;
+	if(copy_to_user(&name->sname[0],
+			&system_utsname.sysname[0],
+			sizeof(name->sname) - 1))
+		goto out;
+	copy_to_user(&name->nname[0],
+		     &system_utsname.nodename[0],
+		     sizeof(name->nname) - 1);
+	put_user('\0', &name->nname[8]);
+	copy_to_user(&name->rel[0], &system_utsname.release[0], sizeof(name->rel) - 1);
+	copy_to_user(&name->ver[0], &system_utsname.version[0], sizeof(name->ver) - 1);
+	copy_to_user(&name->mach[0], &system_utsname.machine[0], sizeof(name->mach) - 1);
+	ret = 0;
+out:
+	unlock_kernel();
+	return ret;
+}
+
+asmlinkage int sunos_nosys(void)
+{
+	struct pt_regs *regs;
+
+	lock_kernel();
+	regs = current->tss.kregs;
+	current->tss.sig_address = regs->tpc;
+	current->tss.sig_desc = regs->u_regs[UREG_G1];
+	send_sig(SIGSYS, current, 1);
+	printk("Process makes ni_syscall number %d, register dump:\n",
+	       (int) regs->u_regs[UREG_G1]);
+	show_regs(regs);
+	unlock_kernel();
+	return -ENOSYS;
+}
+
+/* This is not a real and complete implementation yet, just to keep
+ * the easy SunOS binaries happy.
+ */
+asmlinkage int sunos_fpathconf(int fd, int name)
+{
+	int ret;
+
+	lock_kernel();
+	switch(name) {
+	case _PCONF_LINK:
+		ret = LINK_MAX;
+		break;
+	case _PCONF_CANON:
+		ret = MAX_CANON;
+		break;
+	case _PCONF_INPUT:
+		ret = MAX_INPUT;
+		break;
+	case _PCONF_NAME:
+		ret = NAME_MAX;
+		break;
+	case _PCONF_PATH:
+		ret = PATH_MAX;
+		break;
+	case _PCONF_PIPE:
+		ret = PIPE_BUF;
+		break;
+	case _PCONF_CHRESTRICT:		/* XXX Investigate XXX */
+		ret = 1;
+		break;
+	case _PCONF_NOTRUNC:		/* XXX Investigate XXX */
+	case _PCONF_VDISABLE:
+		ret = 0;
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+	unlock_kernel();
+	return ret;
+}
+
+asmlinkage int sunos_pathconf(u32 u_path, int name)
+{
+	int ret;
+
+	lock_kernel();
+	ret = sunos_fpathconf(0, name); /* XXX cheese XXX */
+	unlock_kernel();
+	return ret;
+}
+
+/* SunOS mount system call emulation */
+extern asmlinkage int
+sys32_select(int n, u32 inp, u32 outp, u32 exp, u32 tvp);
+
+asmlinkage int sunos_select(int width, u32 inp, u32 outp, u32 exp, u32 tvp)
+{
+	int ret;
+
+	/* SunOS binaries expect that select won't change the tvp contents */
+	lock_kernel();
+	current->personality |= STICKY_TIMEOUTS;
+	ret = sys32_select (width, inp, outp, exp, tvp);
+	unlock_kernel();
+	return ret;
+}
+
+asmlinkage void sunos_nop(void)
+{
+	return;
+}
+
+/* XXXXXXXXXX SunOS mount/umount. XXXXXXXXXXX */
+#define SMNT_RDONLY       1
+#define SMNT_NOSUID       2
+#define SMNT_NEWTYPE      4
+#define SMNT_GRPID        8
+#define SMNT_REMOUNT      16
+#define SMNT_NOSUB        32
+#define SMNT_MULTI        64
+#define SMNT_SYS5         128
+
+struct sunos_fh_t {
+	char fh_data [NFS_FHSIZE];
+};
+
+struct sunos_nfs_mount_args {
+	struct sockaddr_in  *addr; /* file server address */
+	struct nfs_fh *fh;     /* File handle to be mounted */
+	int        flags;      /* flags */
+	int        wsize;      /* write size in bytes */
+	int        rsize;      /* read size in bytes */
+	int        timeo;      /* initial timeout in .1 secs */
+	int        retrans;    /* times to retry send */
+	char       *hostname;  /* server's hostname */
+	int        acregmin;   /* attr cache file min secs */
+	int        acregmax;   /* attr cache file max secs */
+	int        acdirmin;   /* attr cache dir min secs */
+	int        acdirmax;   /* attr cache dir max secs */
+	char       *netname;   /* server's netname */
+};
+
+extern int do_mount(kdev_t, const char *, const char *, char *, int, void *);
+extern dev_t get_unnamed_dev(void);
+extern void put_unnamed_dev(dev_t);
+extern asmlinkage int sys_mount(char *, char *, char *, unsigned long, void *);
+extern asmlinkage int sys_connect(int fd, struct sockaddr *uservaddr, int addrlen);
+extern asmlinkage int sys_socket(int family, int type, int protocol);
+extern asmlinkage int sys_bind(int fd, struct sockaddr *umyaddr, int addrlen);
+
+
+/* Bind the socket on a local reserved port and connect it to the
+ * remote server.  This on Linux/i386 is done by the mount program,
+ * not by the kernel. 
+ */
+/* XXXXXXXXXXXXXXXXXXXX */
+static int
+sunos_nfs_get_server_fd (int fd, struct sockaddr_in *addr)
+{
+	struct sockaddr_in local;
+	struct sockaddr_in server;
+	int    try_port;
+	int    ret;
+	struct socket *socket;
+	struct inode  *inode;
+	struct file   *file;
+
+	file = current->files->fd [fd];
+	inode = file->f_inode;
+	if (!inode || !inode->i_sock)
+		return 0;
+
+	socket = &inode->u.socket_i;
+	local.sin_family = AF_INET;
+	local.sin_addr.s_addr = INADDR_ANY;
+
+	/* IPPORT_RESERVED = 1024, can't find the definition in the kernel */
+	try_port = 1024;
+	do {
+		local.sin_port = htons (--try_port);
+		ret = socket->ops->bind(socket, (struct sockaddr*)&local,
+					sizeof(local));
+	} while (ret && try_port > (1024 / 2));
+
+	if (ret)
+		return 0;
+
+	server.sin_family = AF_INET;
+	server.sin_addr = addr->sin_addr;
+	server.sin_port = NFS_PORT;
+
+	/* Call sys_connect */
+	ret = socket->ops->connect (socket, (struct sockaddr *) &server,
+				    sizeof (server), file->f_flags);
+	if (ret < 0)
+		return 0;
+	return 1;
+}
+
+/* XXXXXXXXXXXXXXXXXXXX */
+static int get_default (int value, int def_value)
+{
+    if (value)
+	return value;
+    else
+	return def_value;
+}
+
+/* XXXXXXXXXXXXXXXXXXXX */
+asmlinkage int sunos_nfs_mount(char *dir_name, int linux_flags, void *data)
+{
+	int  ret = -ENODEV;
+	int  server_fd;
+	char *the_name;
+	struct nfs_mount_data linux_nfs_mount;
+	struct sunos_nfs_mount_args *sunos_mount = data;
+	dev_t dev;
+
+	/* Ok, here comes the fun part: Linux's nfs mount needs a
+	 * socket connection to the server, but SunOS mount does not
+	 * require this, so we use the information on the destination
+	 * address to create a socket and bind it to a reserved
+	 * port on this system
+	 */
+	server_fd = sys_socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+	if (server_fd < 0)
+		return -ENXIO;
+
+	if (!sunos_nfs_get_server_fd (server_fd, sunos_mount->addr)){
+		sys_close (server_fd);
+		return -ENXIO;
+	}
+
+	/* Now, bind it to a locally reserved port */
+	linux_nfs_mount.version  = NFS_MOUNT_VERSION;
+	linux_nfs_mount.flags    = sunos_mount->flags;
+	linux_nfs_mount.addr     = *sunos_mount->addr;
+	linux_nfs_mount.root     = *sunos_mount->fh;
+	linux_nfs_mount.fd       = server_fd;
+	
+	linux_nfs_mount.rsize    = get_default (sunos_mount->rsize, 8192);
+	linux_nfs_mount.wsize    = get_default (sunos_mount->wsize, 8192);
+	linux_nfs_mount.timeo    = get_default (sunos_mount->timeo, 10);
+	linux_nfs_mount.retrans  = sunos_mount->retrans;
+	
+	linux_nfs_mount.acregmin = sunos_mount->acregmin;
+	linux_nfs_mount.acregmax = sunos_mount->acregmax;
+	linux_nfs_mount.acdirmin = sunos_mount->acdirmin;
+	linux_nfs_mount.acdirmax = sunos_mount->acdirmax;
+
+	if (getname (sunos_mount->hostname, &the_name))
+		return -EFAULT;
+
+	strncpy (linux_nfs_mount.hostname, the_name, 254);
+	linux_nfs_mount.hostname [255] = 0;
+	putname (the_name);
+
+	dev = get_unnamed_dev ();
+	
+	ret = do_mount (dev, "", dir_name, "nfs", linux_flags, &linux_nfs_mount);
+	if (ret)
+	    put_unnamed_dev(dev);
+
+	return ret;
+}
+
+/* XXXXXXXXXXXXXXXXXXXX */
+asmlinkage int
+sunos_mount(char *type, char *dir, int flags, void *data)
+{
+	int linux_flags = MS_MGC_MSK; /* new semantics */
+	int ret = -EINVAL;
+	char *dev_fname = 0;
+
+	lock_kernel();
+	/* We don't handle the integer fs type */
+	if ((flags & SMNT_NEWTYPE) == 0)
+		goto out;
+
+	/* Do not allow for those flags we don't support */
+	if (flags & (SMNT_GRPID|SMNT_NOSUB|SMNT_MULTI|SMNT_SYS5))
+		goto out;
+
+	if(flags & SMNT_REMOUNT)
+		linux_flags |= MS_REMOUNT;
+	if(flags & SMNT_RDONLY)
+		linux_flags |= MS_RDONLY;
+	if(flags & SMNT_NOSUID)
+		linux_flags |= MS_NOSUID;
+	if(strcmp(type, "ext2") == 0) {
+		dev_fname = (char *) data;
+	} else if(strcmp(type, "iso9660") == 0) {
+		dev_fname = (char *) data;
+	} else if(strcmp(type, "minix") == 0) {
+		dev_fname = (char *) data;
+	} else if(strcmp(type, "nfs") == 0) {
+		ret = sunos_nfs_mount (dir, flags, data);
+		goto out;
+        } else if(strcmp(type, "ufs") == 0) {
+		printk("Warning: UFS filesystem mounts unsupported.\n");
+		ret = -ENODEV;
+		goto out;
+	} else if(strcmp(type, "proc")) {
+		ret = -ENODEV;
+		goto out;
+	}
+	ret = sys_mount(dev_fname, dir, type, linux_flags, NULL);
+out:
+	unlock_kernel();
+	return ret;
+}
+
+extern asmlinkage int sys_setsid(void);
+extern asmlinkage int sys_setpgid(pid_t, pid_t);
+
+asmlinkage int sunos_setpgrp(pid_t pid, pid_t pgid)
+{
+	int ret;
+
+	/* So stupid... */
+	lock_kernel();
+	if((!pid || pid == current->pid) &&
+	   !pgid) {
+		sys_setsid();
+		ret = 0;
+	} else {
+		ret = sys_setpgid(pid, pgid);
+	}
+	unlock_kernel();
+	return ret;
+}
+
+/* So stupid... */
+extern asmlinkage int sys32_wait4(__kernel_pid_t32 pid,
+				  u32 stat_addr, int options, u32 ru);
+
+asmlinkage int sunos_wait4(__kernel_pid_t32 pid, u32 stat_addr, int options, u32 ru)
+{
+	int ret;
+
+	lock_kernel();
+	ret = sys32_wait4((pid ? pid : ((__kernel_pid_t32)-1)),
+			  stat_addr, options, ru);
+	unlock_kernel();
+	return ret;
+}
+
+extern int kill_pg(int, int, int);
+asmlinkage int sunos_killpg(int pgrp, int sig)
+{
+	int ret;
+
+	lock_kernel();
+	ret = kill_pg(pgrp, sig, 0);
+	unlock_kernel();
+	return ret;
+}
+
+asmlinkage int sunos_audit(void)
+{
+	lock_kernel();
+	printk ("sys_audit\n");
+	unlock_kernel();
+	return -1;
+}
+
+extern asmlinkage u32 sunos_gethostid(void)
+{
+	u32 ret;
+
+	lock_kernel();
+	ret = (((u32)idprom->id_machtype << 24) | ((u32)idprom->id_sernum));
+	unlock_kernel();
+	return ret;
+}
+
+/* sysconf options, for SunOS compatibility */
+#define   _SC_ARG_MAX             1
+#define   _SC_CHILD_MAX           2
+#define   _SC_CLK_TCK             3
+#define   _SC_NGROUPS_MAX         4
+#define   _SC_OPEN_MAX            5
+#define   _SC_JOB_CONTROL         6
+#define   _SC_SAVED_IDS           7
+#define   _SC_VERSION             8
+
+extern asmlinkage s32 sunos_sysconf (int name)
+{
+	s32 ret;
+
+	lock_kernel();
+	switch (name){
+	case _SC_ARG_MAX:
+		ret = ARG_MAX;
+		break;
+	case _SC_CHILD_MAX:
+		ret = CHILD_MAX;
+		break;
+	case _SC_CLK_TCK:
+		ret = HZ;
+		break;
+	case _SC_NGROUPS_MAX:
+		ret = NGROUPS_MAX;
+		break;
+	case _SC_OPEN_MAX:
+		ret = OPEN_MAX;
+		break;
+	case _SC_JOB_CONTROL:
+		ret = 1;	/* yes, we do support job control */
+		break;
+	case _SC_SAVED_IDS:
+		ret = 1;	/* yes, we do support saved uids  */
+		break;
+	case _SC_VERSION:
+		/* mhm, POSIX_VERSION is in /usr/include/unistd.h
+		 * should it go on /usr/include/linux?
+		 */
+		ret = 199009;
+		break;
+	default:
+		ret = -1;
+		break;
+	};
+	unlock_kernel();
+	return ret;
+}
+
+extern asmlinkage int sys_semctl (int semid, int semnum, int cmd, union semun arg);
+extern asmlinkage int sys_semget (key_t key, int nsems, int semflg);
+extern asmlinkage int sys_semop  (int semid, struct sembuf *tsops, unsigned nsops);
+
+asmlinkage int sunos_semsys(int op, u32 arg1, u32 arg2, u32 arg3, u32 ptr)
+{
+	union semun arg4;
+	int ret;
+
+	lock_kernel();
+	switch (op) {
+	case 0:
+		/* Most arguments match on a 1:1 basis but cmd doesn't */
+		switch(arg3) {
+		case 4:
+			arg3=GETPID; break;
+		case 5:
+			arg3=GETVAL; break;
+		case 6:
+			arg3=GETALL; break;
+		case 3:
+			arg3=GETNCNT; break;
+		case 7:
+			arg3=GETZCNT; break;
+		case 8:
+			arg3=SETVAL; break;
+		case 9:
+			arg3=SETALL; break;
+		}
+		/* sys_semctl(): */
+		arg4.__pad=(void *)A(ptr); /* value to modify semaphore to */
+		ret = sys_semctl((int)arg1, (int)arg2, (int)arg3, arg4);
+		break;
+	case 1:
+		/* sys_semget(): */
+		ret = sys_semget((key_t)arg1, (int)arg2, (int)arg3);
+		break;
+	case 2:
+		/* sys_semop(): */
+		ret = sys_semop((int)arg1, (struct sembuf *)A(arg2), (unsigned)arg3);
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	};
+	unlock_kernel();
+	return ret;
+}
+
+struct msgbuf32 {
+	s32 mtype;
+	char mtext[1];
+};
+
+struct ipc_perm32
+{
+	key_t    	  key;
+        __kernel_uid_t32  uid;
+        __kernel_gid_t32  gid;
+        __kernel_uid_t32  cuid;
+        __kernel_gid_t32  cgid;
+        __kernel_mode_t32 mode;
+        unsigned short  seq;
+};
+
+struct msqid_ds32
+{
+        struct ipc_perm32 msg_perm;
+        u32 msg_first;
+        u32 msg_last;
+        __kernel_time_t32 msg_stime;
+        __kernel_time_t32 msg_rtime;
+        __kernel_time_t32 msg_ctime;
+        u32 wwait;
+        u32 rwait;
+        unsigned short msg_cbytes;
+        unsigned short msg_qnum;  
+        unsigned short msg_qbytes;
+        __kernel_ipc_pid_t32 msg_lspid;
+        __kernel_ipc_pid_t32 msg_lrpid;
+};
+
+static inline int sunos_msqid_get(struct msqid_ds32 *user,
+				  struct msqid_ds *kern)
+{
+	if(get_user(kern->msg_perm.key, &user->msg_perm.key)		||
+	   __get_user(kern->msg_perm.uid, &user->msg_perm.uid)		||
+	   __get_user(kern->msg_perm.gid, &user->msg_perm.gid)		||
+	   __get_user(kern->msg_perm.cuid, &user->msg_perm.cuid)	||
+	   __get_user(kern->msg_perm.cgid, &user->msg_perm.cgid)	||
+	   __get_user(kern->msg_stime, &user->msg_stime)		||
+	   __get_user(kern->msg_rtime, &user->msg_rtime)		||
+	   __get_user(kern->msg_ctime, &user->msg_ctime)		||
+	   __get_user(kern->msg_ctime, &user->msg_cbytes)		||
+	   __get_user(kern->msg_ctime, &user->msg_qnum)			||
+	   __get_user(kern->msg_ctime, &user->msg_qbytes)		||
+	   __get_user(kern->msg_ctime, &user->msg_lspid)		||
+	   __get_user(kern->msg_ctime, &user->msg_lrpid))
+		return -EFAULT;
+	return 0;
+}
+
+static inline int sunos_msqid_put(struct msqid_ds32 *user,
+				  struct msqid_ds *kern)
+{
+	if(put_user(kern->msg_perm.key, &user->msg_perm.key)		||
+	   __put_user(kern->msg_perm.uid, &user->msg_perm.uid)		||
+	   __put_user(kern->msg_perm.gid, &user->msg_perm.gid)		||
+	   __put_user(kern->msg_perm.cuid, &user->msg_perm.cuid)	||
+	   __put_user(kern->msg_perm.cgid, &user->msg_perm.cgid)	||
+	   __put_user(kern->msg_stime, &user->msg_stime)		||
+	   __put_user(kern->msg_rtime, &user->msg_rtime)		||
+	   __put_user(kern->msg_ctime, &user->msg_ctime)		||
+	   __put_user(kern->msg_ctime, &user->msg_cbytes)		||
+	   __put_user(kern->msg_ctime, &user->msg_qnum)			||
+	   __put_user(kern->msg_ctime, &user->msg_qbytes)		||
+	   __put_user(kern->msg_ctime, &user->msg_lspid)		||
+	   __put_user(kern->msg_ctime, &user->msg_lrpid))
+		return -EFAULT;
+	return 0;
+}
+
+static inline int sunos_msgbuf_get(struct msgbuf32 *user, struct msgbuf *kern, int len)
+{
+	if(get_user(kern->mtype, &user->mtype)	||
+	   __copy_from_user(kern->mtext, &user->mtext, len))
+		return -EFAULT;
+	return 0;
+}
+
+static inline int sunos_msgbuf_put(struct msgbuf32 *user, struct msgbuf *kern, int len)
+{
+	if(put_user(kern->mtype, &user->mtype)	||
+	   __copy_to_user(user->mtext, kern->mtext, len))
+		return -EFAULT;
+	return 0;
+}
+
+extern asmlinkage int sys_msgget (key_t key, int msgflg);
+extern asmlinkage int sys_msgrcv (int msqid, struct msgbuf *msgp,
+				  size_t msgsz, long msgtyp, int msgflg);
+extern asmlinkage int sys_msgsnd (int msqid, struct msgbuf *msgp,
+				  size_t msgsz, int msgflg);
+extern asmlinkage int sys_msgctl (int msqid, int cmd, struct msqid_ds *buf);
+
+asmlinkage int sunos_msgsys(int op, u32 arg1, u32 arg2, u32 arg3, u32 arg4)
+{
+	struct sparc_stackf32 *sp;
+	struct msqid_ds kds;
+	struct msgbuf *kmbuf;
+	unsigned long old_fs = get_fs();
+	u32 arg5;
+	int rval;
+
+	lock_kernel();
+	switch(op) {
+	case 0:
+		rval = sys_msgget((key_t)arg1, (int)arg2);
+		break;
+	case 1:
+		if(!sunos_msqid_get((struct msqid_ds32 *)A(arg3), &kds)) {
+			set_fs(KERNEL_DS);
+			rval = sys_msgctl((int)arg1, (int)arg2,
+					  (struct msqid_ds *)A(arg3));
+			set_fs(old_fs);
+			if(!rval)
+				rval = sunos_msqid_put((struct msqid_ds32 *)A(arg3),
+						       &kds);
+		} else
+			rval = -EFAULT;
+		break;
+	case 2:
+		rval = -EFAULT;
+		kmbuf = (struct msgbuf *)kmalloc(sizeof(struct msgbuf) + arg3,
+						 GFP_KERNEL);
+		if(!kmbuf)
+			break;
+		sp = (struct sparc_stackf32 *)
+			(current->tss.kregs->u_regs[UREG_FP] & 0xffffffffUL);
+		if(get_user(arg5, &sp->xxargs[0])) {
+			rval = -EFAULT;
+			break;
+		}
+		set_fs(KERNEL_DS);
+		rval = sys_msgrcv((int)arg1, kmbuf, (size_t)arg3,
+				  (long)arg4, (int)arg5);
+		set_fs(old_fs);
+		if(!rval)
+			rval = sunos_msgbuf_put((struct msgbuf32 *)A(arg2),
+						kmbuf, arg3);
+		kfree(kmbuf);
+		break;
+	case 3:
+		rval = -EFAULT;
+		kmbuf = (struct msgbuf *)kmalloc(sizeof(struct msgbuf) + arg3,
+						 GFP_KERNEL);
+		if(!kmbuf || sunos_msgbuf_get((struct msgbuf32 *)A(arg2),
+					      kmbuf, arg3))
+			break;
+		set_fs(KERNEL_DS);
+		rval = sys_msgsnd((int)arg1, kmbuf, (size_t)arg3, (int)arg4);
+		set_fs(old_fs);
+		kfree(kmbuf);
+		break;
+	default:
+		rval = -EINVAL;
+		break;
+	}
+	unlock_kernel();
+	return rval;
+}
+
+struct shmid_ds32 {
+        struct ipc_perm32       shm_perm;
+        int                     shm_segsz;
+        __kernel_time_t32       shm_atime;
+        __kernel_time_t32       shm_dtime;
+        __kernel_time_t32       shm_ctime;
+        __kernel_ipc_pid_t32    shm_cpid; 
+        __kernel_ipc_pid_t32    shm_lpid; 
+        unsigned short          shm_nattch;
+        unsigned short          shm_npages;
+        u32			shm_pages;
+        u32			attaches; 
+};
+                                                        
+static inline int sunos_shmid_get(struct shmid_ds32 *user,
+				  struct shmid_ds *kern)
+{
+	if(get_user(kern->shm_perm.key, &user->shm_perm.key)		||
+	   __get_user(kern->shm_perm.uid, &user->shm_perm.uid)		||
+	   __get_user(kern->shm_perm.gid, &user->shm_perm.gid)		||
+	   __get_user(kern->shm_perm.cuid, &user->shm_perm.cuid)	||
+	   __get_user(kern->shm_perm.cgid, &user->shm_perm.cgid)	||
+	   __get_user(kern->shm_segsz, &user->shm_segsz)		||
+	   __get_user(kern->shm_atime, &user->shm_atime)		||
+	   __get_user(kern->shm_dtime, &user->shm_dtime)		||
+	   __get_user(kern->shm_ctime, &user->shm_ctime)		||
+	   __get_user(kern->shm_cpid, &user->shm_cpid)			||
+	   __get_user(kern->shm_lpid, &user->shm_lpid)			||
+	   __get_user(kern->shm_nattch, &user->shm_nattch)		||
+	   __get_user(kern->shm_npages, &user->shm_npages))
+		return -EFAULT;
+	return 0;
+}
+
+static inline int sunos_shmid_put(struct shmid_ds32 *user,
+				  struct shmid_ds *kern)
+{
+	if(put_user(kern->shm_perm.key, &user->shm_perm.key)		||
+	   __put_user(kern->shm_perm.uid, &user->shm_perm.uid)		||
+	   __put_user(kern->shm_perm.gid, &user->shm_perm.gid)		||
+	   __put_user(kern->shm_perm.cuid, &user->shm_perm.cuid)	||
+	   __put_user(kern->shm_perm.cgid, &user->shm_perm.cgid)	||
+	   __put_user(kern->shm_segsz, &user->shm_segsz)		||
+	   __put_user(kern->shm_atime, &user->shm_atime)		||
+	   __put_user(kern->shm_dtime, &user->shm_dtime)		||
+	   __put_user(kern->shm_ctime, &user->shm_ctime)		||
+	   __put_user(kern->shm_cpid, &user->shm_cpid)			||
+	   __put_user(kern->shm_lpid, &user->shm_lpid)			||
+	   __put_user(kern->shm_nattch, &user->shm_nattch)		||
+	   __put_user(kern->shm_npages, &user->shm_npages))
+		return -EFAULT;
+	return 0;
+}
+
+extern asmlinkage int sys_shmat (int shmid, char *shmaddr, int shmflg, ulong *raddr);
+extern asmlinkage int sys_shmctl (int shmid, int cmd, struct shmid_ds *buf);
+extern asmlinkage int sys_shmdt (char *shmaddr);
+extern asmlinkage int sys_shmget (key_t key, int size, int shmflg);
+
+asmlinkage int sunos_shmsys(int op, u32 arg1, u32 arg2, u32 arg3)
+{
+	struct shmid_ds ksds;
+	unsigned long raddr, old_fs = get_fs();
+	int rval;
+
+	lock_kernel();
+	switch(op) {
+	case 0:
+		/* sys_shmat(): attach a shared memory area */
+		rval = sys_shmat((int)arg1,(char *)A(arg2),(int)arg3,&raddr);
+		if(!rval)
+			rval = (int) raddr;
+		break;
+	case 1:
+		/* sys_shmctl(): modify shared memory area attr. */
+		if(!sunos_shmid_get((struct shmid_ds32 *)A(arg3), &ksds)) {
+			set_fs(KERNEL_DS);
+			rval = sys_shmctl((int)arg1,(int)arg2, &ksds);
+			set_fs(old_fs);
+			if(!rval)
+				rval = sunos_shmid_put((struct shmid_ds32 *)A(arg3),
+						       &ksds);
+		} else
+			rval = -EFAULT;
+		break;
+	case 2:
+		/* sys_shmdt(): detach a shared memory area */
+		rval = sys_shmdt((char *)A(arg1));
+		break;
+	case 3:
+		/* sys_shmget(): get a shared memory area */
+		rval = sys_shmget((key_t)arg1,(int)arg2,(int)arg3);
+		break;
+	default:
+		rval = -EINVAL;
+		break;
+	};
+	unlock_kernel();
+	return rval;
+}
+
+asmlinkage int sunos_open(u32 filename, int flags, int mode)
+{
+	int ret;
+
+	lock_kernel();
+	current->personality |= PER_BSD;
+	ret = sys_open ((char *)A(filename), flags, mode);
+	unlock_kernel();
+	return ret;
+}
+
+#define SUNOS_EWOULDBLOCK 35
+
+/* see the sunos man page read(2v) for an explanation
+   of this garbage. We use O_NDELAY to mark
+   file descriptors that have been set non-blocking 
+   using 4.2BSD style calls. (tridge) */
+
+static inline int check_nonblock(int ret, int fd)
+{
+	if (ret == -EAGAIN && (current->files->fd[fd]->f_flags & O_NDELAY))
+		return -SUNOS_EWOULDBLOCK;
+	return ret;
+}
+
+extern asmlinkage int sys32_read(unsigned int fd, u32 buf, int count);
+extern asmlinkage int sys32_write(unsigned int fd, u32 buf,int count);
+extern asmlinkage int sys32_recv(int fd, u32 ubuf, int size, unsigned flags);
+extern asmlinkage int sys32_send(int fd, u32 buff, int len, unsigned flags);
+extern asmlinkage int sys32_accept(int fd, u32 sa, u32 addrlen);
+extern asmlinkage int sys32_readv(u32 fd, u32 vector, s32 count);
+extern asmlinkage int sys32_writev(u32 fd, u32 vector, s32 count);
+
+asmlinkage int sunos_read(unsigned int fd, u32 buf, int count)
+{
+	int ret;
+
+	lock_kernel();
+	ret = check_nonblock(sys32_read(fd, buf, count), fd);
+	unlock_kernel();
+	return ret;
+}
+
+asmlinkage int sunos_readv(u32 fd, u32 vector, s32 count)
+{
+	int ret;
+
+	lock_kernel();
+	ret = check_nonblock(sys32_readv(fd, vector, count), fd);
+	lock_kernel();
+	return ret;
+}
+
+asmlinkage int sunos_write(unsigned int fd, u32 buf, int count)
+{
+	int ret;
+
+	lock_kernel();
+	ret = check_nonblock(sys32_write(fd, buf, count), fd);
+	unlock_kernel();
+	return ret;
+}
+
+asmlinkage int sunos_writev(u32 fd, u32 vector, s32 count)
+{
+	int ret;
+
+	lock_kernel();
+	ret = check_nonblock(sys32_writev(fd, vector, count), fd);
+	unlock_kernel();
+	return ret;
+}
+
+asmlinkage int sunos_recv(int fd, u32 ubuf, int size, unsigned flags)
+{
+	int ret;
+
+	lock_kernel();
+	ret = check_nonblock(sys32_recv(fd, ubuf, size, flags), fd);
+	unlock_kernel();
+	return ret;
+}
+
+asmlinkage int sunos_send(int fd, u32 buff, int len, unsigned flags)
+{
+	int ret;
+
+	lock_kernel();
+	ret = check_nonblock(sys32_send(fd, buff, len, flags), fd);
+	unlock_kernel();
+	return ret;
+}
+
+asmlinkage int sunos_accept(int fd, u32 sa, u32 addrlen)
+{
+	int ret;
+
+	lock_kernel();
+	ret = check_nonblock(sys32_accept(fd, sa, addrlen), fd);
+	unlock_kernel();
+	return ret;
+}
+
+#define SUNOS_SV_INTERRUPT 2
+
+extern void check_pending(int signum);
+
+asmlinkage int sunos_sigaction(int signum, u32 action, u32 oldaction)
+{
+	struct sigaction32 new_sa, old_sa;
+	struct sigaction *p;
+	const int sigaction_size = sizeof (struct sigaction32) - sizeof (u32);
+
+	current->personality |= PER_BSD;
+	if(signum < 1 || signum > 32)
+		return -EINVAL;
+
+	p = signum - 1 + current->sig->action;
+
+	if(action) {
+		if (signum==SIGKILL || signum==SIGSTOP)
+			return -EINVAL;
+		memset(&new_sa, 0, sizeof(struct sigaction32));
+		if(copy_from_user(&new_sa, (struct sigaction32 *)A(action),
+				  sigaction_size))
+			return -EFAULT;
+		if (((__sighandler_t)A(new_sa.sa_handler) != SIG_DFL) &&
+		     (__sighandler_t)A(new_sa.sa_handler) != SIG_IGN) {
+			if(verify_area(VERIFY_READ,
+				       (__sighandler_t)A(new_sa.sa_handler), 1))
+				return -EFAULT;
+		}
+		new_sa.sa_flags ^= SUNOS_SV_INTERRUPT;
+	}
+
+	if (oldaction) {
+		/* In the clone() case we could copy half consistant
+		 * state to the user, however this could sleep and
+		 * deadlock us if we held the signal lock on SMP.  So for
+		 * now I take the easy way out and do no locking.
+		 * But then again we don't support SunOS lwp's anyways ;-)
+		 */
+		old_sa.sa_handler = (unsigned)(u64)(p->sa_handler);
+		old_sa.sa_mask = (sigset_t32)(p->sa_mask);
+		old_sa.sa_flags = (unsigned)(p->sa_flags);
+
+		if (old_sa.sa_flags & SA_RESTART)
+			old_sa.sa_flags &= ~SA_RESTART;
+		else
+			old_sa.sa_flags |= SUNOS_SV_INTERRUPT;
+		if (copy_to_user((struct sigaction32 *)A(oldaction),
+				 &old_sa, sigaction_size))
+			 return -EFAULT;
+	}
+
+	if (action) {
+		spin_lock_irq(&current->sig->siglock);
+		p->sa_handler = (__sighandler_t)A(new_sa.sa_handler);
+		p->sa_mask = (sigset_t)(new_sa.sa_mask);
+		p->sa_flags = new_sa.sa_flags;
+		p->sa_restorer = (void (*)(void))0;
+		check_pending(signum);
+		spin_unlock_irq(&current->sig->siglock);
+	}
+	return 0;
+}
+
+
+extern asmlinkage int sys32_setsockopt(int fd, int level, int optname,
+				     u32 optval, int optlen);
+extern asmlinkage int sys32_getsockopt(int fd, int level, int optname,
+				     u32 optval, u32 optlen);
+
+asmlinkage int sunos_setsockopt(int fd, int level, int optname, u32 optval,
+				int optlen)
+{
+	int tr_opt = optname;
+	int ret;
+
+	lock_kernel();
+	if (level == SOL_IP) {
+		/* Multicast socketopts (ttl, membership) */
+		if (tr_opt >=2 && tr_opt <= 6)
+			tr_opt += 30;
+	}
+	ret = sys32_setsockopt(fd, level, tr_opt, optval, optlen);
+	unlock_kernel();
+	return ret;
+}
+
+asmlinkage int sunos_getsockopt(int fd, int level, int optname,
+				u32 optval, u32 optlen)
+{
+	int tr_opt = optname;
+	int ret;
+
+	lock_kernel();
+	if (level == SOL_IP) {
+		/* Multicast socketopts (ttl, membership) */
+		if (tr_opt >=2 && tr_opt <= 6)
+			tr_opt += 30;
+	}
+	ret = sys32_getsockopt(fd, level, tr_opt, optval, optlen);
+	unlock_kernel();
+	return ret;
+}
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen, slshen@lbl.gov