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, 1194 insertions, 0 deletions

diff --git a/arch/sparc/kernel/sys_sunos.c b/arch/sparc/kernel/sys_sunos.c
new file mode 100644
index 000000000000..81c894acd0db
--- /dev/null
+++ b/arch/sparc/kernel/sys_sunos.c
@@ -0,0 +1,1194 @@
+/* $Id: sys_sunos.c,v 1.137 2002/02/08 03:57:14 davem Exp $
+ * sys_sunos.c: SunOS specific syscall compatibility support.
+ *
+ * Copyright (C) 1995 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/file.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/major.h>
+#include <linux/stat.h>
+#include <linux/slab.h>
+#include <linux/pagemap.h>
+#include <linux/errno.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/syscalls.h>
+
+#include <net/sock.h>
+
+#include <asm/uaccess.h>
+#ifndef KERNEL_DS
+#include <linux/segment.h>
+#endif
+
+#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/nfs2.h>
+#include <linux/nfs_mount.h>
+
+/* for sunos_select */
+#include <linux/time.h>
+#include <linux/personality.h>
+
+/* NR_OPEN is now larger and dynamic in recent kernels. */
+#define SUNOS_NR_OPEN   256
+
+/* We use the SunOS mmap() semantics. */
+asmlinkage unsigned long sunos_mmap(unsigned long addr, unsigned long len,
+                                    unsigned long prot, unsigned long flags,
+                                    unsigned long fd, unsigned long off)
+{
+        struct file * file = NULL;
+        unsigned long retval, ret_type;
+
+        if (flags & MAP_NORESERVE) {
+                static int cnt;
+                if (cnt++ < 10)
+                        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)
+                        goto out;
+                file = fget(fd);
+                if (!file)
+                        goto out;
+        }
+
+        retval = -EINVAL;
+        /* If this is ld.so or a shared library doing an mmap
+         * of /dev/zero, transform it into an anonymous mapping.
+         * SunOS is so stupid some times... hmph!
+         */
+        if (file) {
+                if (imajor(file->f_dentry->d_inode) == MEM_MAJOR &&
+                    iminor(file->f_dentry->d_inode) == 5) {
+                        flags |= MAP_ANONYMOUS;
+                        fput(file);
+                        file = NULL;
+                }
+        }
+        ret_type = flags & _MAP_NEW;
+        flags &= ~_MAP_NEW;
+
+        if (!(flags & MAP_FIXED))
+                addr = 0;
+        else {
+                if (ARCH_SUN4C_SUN4 &&
+                    (len > 0x20000000 ||
+                     ((flags & MAP_FIXED) &&
+                      addr < 0xe0000000 && addr + len > 0x20000000)))
+                        goto out_putf;
+
+                /* See asm-sparc/uaccess.h */
+                if (len > TASK_SIZE - PAGE_SIZE ||
+                    addr + len > TASK_SIZE - PAGE_SIZE)
+                        goto out_putf;
+        }
+
+        flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
+        down_write(&current->mm->mmap_sem);
+        retval = do_mmap(file, addr, len, prot, flags, off);
+        up_write(&current->mm->mmap_sem);
+        if (!ret_type)
+                retval = ((retval < PAGE_OFFSET) ? 0 : retval);
+
+out_putf:
+        if (file)
+                fput(file);
+out:
+        return retval;
+}
+
+/* lmbench calls this, just say "yeah, ok" */
+asmlinkage int sunos_mctl(unsigned long addr, unsigned long len, int function, char *arg)
+{
+        return 0;
+}
+
+/* SunOS is completely broken... it returns 0 on success, otherwise
+ * ENOMEM.  For sys_sbrk() it wants the old brk value as a return
+ * on success and ENOMEM as before on failure.
+ */
+asmlinkage int sunos_brk(unsigned long brk)
+{
+        int freepages, retval = -ENOMEM;
+        unsigned long rlim;
+        unsigned long newbrk, oldbrk;
+
+        down_write(&current->mm->mmap_sem);
+        if (ARCH_SUN4C_SUN4) {
+                if (brk >= 0x20000000 && brk < 0xe0000000) {
+                        goto out;
+                }
+        }
+
+        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(current->mm, newbrk, oldbrk-newbrk);
+                goto out;
+        }
+        /*
+         * Check against rlimit and stack..
+         */
+        retval = -ENOMEM;
+        rlim = current->signal->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 = get_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_brk(oldbrk, newbrk-oldbrk);
+        retval = 0;
+out:
+        up_write(&current->mm->mmap_sem);
+        return retval;
+}
+
+asmlinkage unsigned long sunos_sbrk(int increment)
+{
+        int error;
+        unsigned long oldbrk;
+
+        /* This should do it hopefully... */
+        lock_kernel();
+        oldbrk = current->mm->brk;
+        error = sunos_brk(((int) current->mm->brk) + increment);
+        if (!error)
+                error = oldbrk;
+        unlock_kernel();
+        return error;
+}
+
+/* XXX Completely undocumented, and completely magic...
+ * XXX I believe it is to increase the size of the stack by
+ * XXX argument 'increment' and return the new end of stack
+ * XXX area.  Wheee...
+ */
+asmlinkage unsigned long sunos_sstk(int increment)
+{
+        lock_kernel();
+        printk("%s: Call to sunos_sstk(increment<%d>) is unsupported\n",
+               current->comm, increment);
+        unlock_kernel();
+        return -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(unsigned long 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();
+}
+
+/* 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 long sunos_getdtablesize(void)
+{
+        return SUNOS_NR_OPEN;
+}
+
+#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
+
+asmlinkage unsigned long sunos_sigblock(unsigned long blk_mask)
+{
+        unsigned long old;
+
+        spin_lock_irq(&current->sighand->siglock);
+        old = current->blocked.sig[0];
+        current->blocked.sig[0] |= (blk_mask & _BLOCKABLE);
+        recalc_sigpending();
+        spin_unlock_irq(&current->sighand->siglock);
+        return old;
+}
+
+asmlinkage unsigned long sunos_sigsetmask(unsigned long newmask)
+{
+        unsigned long retval;
+
+        spin_lock_irq(&current->sighand->siglock);
+        retval = current->blocked.sig[0];
+        current->blocked.sig[0] = (newmask & _BLOCKABLE);
+        recalc_sigpending();
+        spin_unlock_irq(&current->sighand->siglock);
+        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 {
+    long           d_off;
+    unsigned long  d_ino;
+    unsigned short d_reclen;
+    unsigned short d_namlen;
+    char           d_name[1];
+};
+
+struct sunos_dirent_callback {
+    struct sunos_dirent __user *curr;
+    struct sunos_dirent __user *previous;
+    int count;
+    int error;
+};
+
+#define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de)))
+#define ROUND_UP(x) (((x)+sizeof(long)-1) & ~(sizeof(long)-1))
+
+static int sunos_filldir(void * __buf, const char * name, int namlen,
+                         loff_t offset, ino_t ino, unsigned int d_type)
+{
+        struct sunos_dirent __user *dirent;
+        struct sunos_dirent_callback * buf = __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);
+        dirent = (void __user *) dirent + reclen;
+        buf->curr = dirent;
+        buf->count -= reclen;
+        return 0;
+}
+
+asmlinkage int sunos_getdents(unsigned int fd, void __user *dirent, int cnt)
+{
+        struct file * file;
+        struct sunos_dirent __user *lastdirent;
+        struct sunos_dirent_callback buf;
+        int error = -EBADF;
+
+        if (fd >= SUNOS_NR_OPEN)
+                goto out;
+
+        file = fget(fd);
+        if (!file)
+                goto out;
+
+        error = -EINVAL;
+        if (cnt < (sizeof(struct sunos_dirent) + 255))
+                goto out_putf;
+
+        buf.curr = (struct sunos_dirent __user *) dirent;
+        buf.previous = NULL;
+        buf.count = cnt;
+        buf.error = 0;
+
+        error = vfs_readdir(file, sunos_filldir, &buf);
+        if (error < 0)
+                goto out_putf;
+
+        lastdirent = buf.previous;
+        error = buf.error;
+        if (lastdirent) {
+                put_user(file->f_pos, &lastdirent->d_off);
+                error = cnt - buf.count;
+        }
+
+out_putf:
+        fput(file);
+out:
+        return error;
+}
+
+/* Old sunos getdirentries, severely broken compatibility stuff here. */
+struct sunos_direntry {
+    unsigned long  d_ino;
+    unsigned short d_reclen;
+    unsigned short d_namlen;
+    char           d_name[1];
+};
+
+struct sunos_direntry_callback {
+    struct sunos_direntry __user *curr;
+    struct sunos_direntry __user *previous;
+    int count;
+    int error;
+};
+
+static int sunos_filldirentry(void * __buf, const char * name, int namlen,
+                              loff_t offset, ino_t ino, unsigned int d_type)
+{
+        struct sunos_direntry __user *dirent;
+        struct sunos_direntry_callback *buf = __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);
+        dirent = (void __user *) dirent + reclen;
+        buf->curr = dirent;
+        buf->count -= reclen;
+        return 0;
+}
+
+asmlinkage int sunos_getdirentries(unsigned int fd, void __user *dirent,
+                                   int cnt, unsigned int __user *basep)
+{
+        struct file * file;
+        struct sunos_direntry __user *lastdirent;
+        struct sunos_direntry_callback buf;
+        int error = -EBADF;
+
+        if (fd >= SUNOS_NR_OPEN)
+                goto out;
+
+        file = fget(fd);
+        if (!file)
+                goto out;
+
+        error = -EINVAL;
+        if (cnt < (sizeof(struct sunos_direntry) + 255))
+                goto out_putf;
+
+        buf.curr = (struct sunos_direntry __user *) dirent;
+        buf.previous = NULL;
+        buf.count = cnt;
+        buf.error = 0;
+
+        error = vfs_readdir(file, sunos_filldirentry, &buf);
+        if (error < 0)
+                goto out_putf;
+
+        lastdirent = buf.previous;
+        error = buf.error;
+        if (lastdirent) {
+                put_user(file->f_pos, basep);
+                error = cnt - buf.count;
+        }
+
+out_putf:
+        fput(file);
+out:
+        return error;
+}
+
+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(struct sunos_utsname __user *name)
+{
+        int ret;
+        down_read(&uts_sem);
+        ret = copy_to_user(&name->sname[0], &system_utsname.sysname[0], sizeof(name->sname) - 1);
+        if (!ret) {
+                ret |= __copy_to_user(&name->nname[0], &system_utsname.nodename[0], sizeof(name->nname) - 1);
+                ret |= __put_user('\0', &name->nname[8]);
+                ret |= __copy_to_user(&name->rel[0], &system_utsname.release[0], sizeof(name->rel) - 1);
+                ret |= __copy_to_user(&name->ver[0], &system_utsname.version[0], sizeof(name->ver) - 1);
+                ret |= __copy_to_user(&name->mach[0], &system_utsname.machine[0], sizeof(name->mach) - 1);
+        }
+        up_read(&uts_sem);
+        return ret ? -EFAULT : 0;
+}
+
+asmlinkage int sunos_nosys(void)
+{
+        struct pt_regs *regs;
+        siginfo_t info;
+        static int cnt;
+
+        lock_kernel();
+        regs = current->thread.kregs;
+        info.si_signo = SIGSYS;
+        info.si_errno = 0;
+        info.si_code = __SI_FAULT|0x100;
+        info.si_addr = (void __user *)regs->pc;
+        info.si_trapno = regs->u_regs[UREG_G1];
+        send_sig_info(SIGSYS, &info, current);
+        if (cnt++ < 4) {
+                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;
+
+        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;
+        }
+        return ret;
+}
+
+asmlinkage int sunos_pathconf(char __user *path, int name)
+{
+        int ret;
+
+        ret = sunos_fpathconf(0, name); /* XXX cheese XXX */
+        return ret;
+}
+
+/* SunOS mount system call emulation */
+
+asmlinkage int sunos_select(int width, fd_set __user *inp, fd_set __user *outp,
+                            fd_set __user *exp, struct timeval __user *tvp)
+{
+        int ret;
+
+        /* SunOS binaries expect that select won't change the tvp contents */
+        ret = sys_select (width, inp, outp, exp, tvp);
+        if (ret == -EINTR && tvp) {
+                time_t sec, usec;
+
+                __get_user(sec, &tvp->tv_sec);
+                __get_user(usec, &tvp->tv_usec);
+
+                if (sec == 0 && usec == 0)
+                        ret = 0;
+        }
+        return ret;
+}
+
+asmlinkage void sunos_nop(void)
+{
+        return;
+}
+
+/* SunOS mount/umount. */
+#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  __user *addr; /* file server address */
+        struct nfs_fh __user *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       __user *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       __user *netname;   /* server's netname */
+};
+
+
+/* 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.
+ */
+static int
+sunos_nfs_get_server_fd (int fd, struct sockaddr_in *addr)
+{
+        struct sockaddr_in local;
+        struct sockaddr_in server;
+        int    try_port;
+        struct socket *socket;
+        struct inode  *inode;
+        struct file   *file;
+        int    ret, result = 0;
+
+        file = fget(fd);
+        if (!file)
+                goto out;
+
+        inode = file->f_dentry->d_inode;
+
+        socket = SOCKET_I(inode);
+        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)
+                goto out_putf;
+
+        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)
+                result = 1;
+
+out_putf:
+        fput(file);
+out:
+        return result;
+}
+
+static int get_default (int value, int def_value)
+{
+    if (value)
+        return value;
+    else
+        return def_value;
+}
+
+static int sunos_nfs_mount(char *dir_name, int linux_flags, void __user *data)
+{
+        int  server_fd, err;
+        char *the_name, *mount_page;
+        struct nfs_mount_data linux_nfs_mount;
+        struct sunos_nfs_mount_args sunos_mount;
+
+        /* 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
+         */
+        if (copy_from_user(&sunos_mount, data, sizeof(sunos_mount)))
+                return -EFAULT;
+
+        server_fd = sys_socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+        if (server_fd < 0)
+                return -ENXIO;
+
+        if (copy_from_user(&linux_nfs_mount.addr,sunos_mount.addr,
+                                sizeof(*sunos_mount.addr)) ||
+            copy_from_user(&linux_nfs_mount.root,sunos_mount.fh,
+                                sizeof(*sunos_mount.fh))) {
+                sys_close (server_fd);
+                return -EFAULT;
+        }
+
+        if (!sunos_nfs_get_server_fd (server_fd, &linux_nfs_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.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;
+
+        the_name = getname(sunos_mount.hostname);
+        if (IS_ERR(the_name))
+                return PTR_ERR(the_name);
+
+        strlcpy(linux_nfs_mount.hostname, the_name,
+                sizeof(linux_nfs_mount.hostname));
+        putname (the_name);
+        
+        mount_page = (char *) get_zeroed_page(GFP_KERNEL);
+        if (!mount_page)
+                return -ENOMEM;
+
+        memcpy(mount_page, &linux_nfs_mount, sizeof(linux_nfs_mount));
+
+        err = do_mount("", dir_name, "nfs", linux_flags, mount_page);
+
+        free_page((unsigned long) mount_page);
+        return err;
+}
+
+asmlinkage int
+sunos_mount(char __user *type, char __user *dir, int flags, void __user *data)
+{
+        int linux_flags = 0;
+        int ret = -EINVAL;
+        char *dev_fname = NULL;
+        char *dir_page, *type_page;
+
+        if (!capable (CAP_SYS_ADMIN))
+                return -EPERM;
+                
+        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;
+
+        dir_page = getname(dir);
+        ret = PTR_ERR(dir_page);
+        if (IS_ERR(dir_page))
+                goto out;
+
+        type_page = getname(type);
+        ret = PTR_ERR(type_page);
+        if (IS_ERR(type_page))
+                goto out1;
+
+        if (strcmp(type_page, "ext2") == 0) {
+                dev_fname = getname(data);
+        } else if (strcmp(type_page, "iso9660") == 0) {
+                dev_fname = getname(data);
+        } else if (strcmp(type_page, "minix") == 0) {
+                dev_fname = getname(data);
+        } else if (strcmp(type_page, "nfs") == 0) {
+                ret = sunos_nfs_mount (dir_page, flags, data);
+                goto out2;
+        } else if (strcmp(type_page, "ufs") == 0) {
+                printk("Warning: UFS filesystem mounts unsupported.\n");
+                ret = -ENODEV;
+                goto out2;
+        } else if (strcmp(type_page, "proc")) {
+                ret = -ENODEV;
+                goto out2;
+        }
+        ret = PTR_ERR(dev_fname);
+        if (IS_ERR(dev_fname))
+                goto out2;
+        ret = do_mount(dev_fname, dir_page, type_page, linux_flags, NULL);
+        if (dev_fname)
+                putname(dev_fname);
+out2:
+        putname(type_page);
+out1:
+        putname(dir_page);
+out:
+        unlock_kernel();
+        return ret;
+}
+
+
+asmlinkage int sunos_setpgrp(pid_t pid, pid_t pgid)
+{
+        int ret;
+
+        /* So stupid... */
+        if ((!pid || pid == current->pid) &&
+            !pgid) {
+                sys_setsid();
+                ret = 0;
+        } else {
+                ret = sys_setpgid(pid, pgid);
+        }
+        return ret;
+}
+
+/* So stupid... */
+asmlinkage int sunos_wait4(pid_t pid, unsigned int __user *stat_addr,
+                           int options, struct rusage __user*ru)
+{
+        int ret;
+
+        ret = sys_wait4((pid ? pid : -1), stat_addr, options, ru);
+        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;
+}
+
+asmlinkage unsigned long sunos_gethostid(void)
+{
+        unsigned long ret;
+
+        lock_kernel();
+        ret = ((unsigned long)idprom->id_machtype << 24) |
+                (unsigned long)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
+
+asmlinkage long sunos_sysconf (int name)
+{
+        long ret;
+
+        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 = 199009L; 
+                break;
+        default:
+                ret = -1;
+                break;
+        };
+        return ret;
+}
+
+asmlinkage int sunos_semsys(int op, unsigned long arg1, unsigned long arg2,
+                            unsigned long arg3, void *ptr)
+{
+        union semun arg4;
+        int ret;
+
+        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(): */
+                /* value to modify semaphore to */
+                arg4.__pad = (void __user *) ptr;
+                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 __user *)arg2, (unsigned)arg3);
+                break;
+        default:
+                ret = -EINVAL;
+                break;
+        };
+        return ret;
+}
+
+asmlinkage int sunos_msgsys(int op, unsigned long arg1, unsigned long arg2,
+                            unsigned long arg3, unsigned long arg4)
+{
+        struct sparc_stackf *sp;
+        unsigned long arg5;
+        int rval;
+
+        switch(op) {
+        case 0:
+                rval = sys_msgget((key_t)arg1, (int)arg2);
+                break;
+        case 1:
+                rval = sys_msgctl((int)arg1, (int)arg2,
+                                  (struct msqid_ds __user *)arg3);
+                break;
+        case 2:
+                lock_kernel();
+                sp = (struct sparc_stackf *)current->thread.kregs->u_regs[UREG_FP];
+                arg5 = sp->xxargs[0];
+                unlock_kernel();
+                rval = sys_msgrcv((int)arg1, (struct msgbuf __user *)arg2,
+                                  (size_t)arg3, (long)arg4, (int)arg5);
+                break;
+        case 3:
+                rval = sys_msgsnd((int)arg1, (struct msgbuf __user *)arg2,
+                                  (size_t)arg3, (int)arg4);
+                break;
+        default:
+                rval = -EINVAL;
+                break;
+        }
+        return rval;
+}
+
+asmlinkage int sunos_shmsys(int op, unsigned long arg1, unsigned long arg2,
+                            unsigned long arg3)
+{
+        unsigned long raddr;
+        int rval;
+
+        switch(op) {
+        case 0:
+                /* do_shmat(): attach a shared memory area */
+                rval = do_shmat((int)arg1,(char __user *)arg2,(int)arg3,&raddr);
+                if (!rval)
+                        rval = (int) raddr;
+                break;
+        case 1:
+                /* sys_shmctl(): modify shared memory area attr. */
+                rval = sys_shmctl((int)arg1,(int)arg2,(struct shmid_ds __user *)arg3);
+                break;
+        case 2:
+                /* sys_shmdt(): detach a shared memory area */
+                rval = sys_shmdt((char __user *)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;
+        };
+        return rval;
+}
+
+#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) {
+                struct file * file = fget(fd);
+                if (file) {
+                        if (file->f_flags & O_NDELAY)
+                                ret = -SUNOS_EWOULDBLOCK;
+                        fput(file);
+                }
+        }
+        return ret;
+}
+
+asmlinkage int sunos_read(unsigned int fd, char __user *buf, int count)
+{
+        int ret;
+
+        ret = check_nonblock(sys_read(fd,buf,count),fd);
+        return ret;
+}
+
+asmlinkage int sunos_readv(unsigned long fd, const struct iovec __user *vector,
+                           long count)
+{
+        int ret;
+
+        ret = check_nonblock(sys_readv(fd,vector,count),fd);
+        return ret;
+}
+
+asmlinkage int sunos_write(unsigned int fd, char __user *buf, int count)
+{
+        int ret;
+
+        ret = check_nonblock(sys_write(fd,buf,count),fd);
+        return ret;
+}
+
+asmlinkage int sunos_writev(unsigned long fd,
+                            const struct iovec __user *vector, long count)
+{
+        int ret;
+
+        ret = check_nonblock(sys_writev(fd,vector,count),fd);
+        return ret;
+}
+
+asmlinkage int sunos_recv(int fd, void __user *ubuf, int size, unsigned flags)
+{
+        int ret;
+
+        ret = check_nonblock(sys_recv(fd,ubuf,size,flags),fd);
+        return ret;
+}
+
+asmlinkage int sunos_send(int fd, void __user *buff, int len, unsigned flags)
+{
+        int ret;
+
+        ret = check_nonblock(sys_send(fd,buff,len,flags),fd);
+        return ret;
+}
+
+asmlinkage int sunos_accept(int fd, struct sockaddr __user *sa,
+                            int __user *addrlen)
+{
+        int ret;
+
+        while (1) {
+                ret = check_nonblock(sys_accept(fd,sa,addrlen),fd);     
+                if (ret != -ENETUNREACH && ret != -EHOSTUNREACH)
+                        break;
+        }
+
+        return ret;
+}
+
+#define SUNOS_SV_INTERRUPT 2
+
+asmlinkage int
+sunos_sigaction(int sig, const struct old_sigaction __user *act,
+                struct old_sigaction __user *oact)
+{
+        struct k_sigaction new_ka, old_ka;
+        int ret;
+
+        if (act) {
+                old_sigset_t mask;
+
+                if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
+                    __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
+                    __get_user(new_ka.sa.sa_flags, &act->sa_flags))
+                        return -EFAULT;
+                __get_user(mask, &act->sa_mask);
+                new_ka.sa.sa_restorer = NULL;
+                new_ka.ka_restorer = NULL;
+                siginitset(&new_ka.sa.sa_mask, mask);
+                new_ka.sa.sa_flags ^= SUNOS_SV_INTERRUPT;
+        }
+
+        ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+        if (!ret && oact) {
+                /* In the clone() case we could copy half consistent
+                 * 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_ka.sa.sa_flags ^= SUNOS_SV_INTERRUPT;
+                if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
+                    __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
+                    __put_user(old_ka.sa.sa_flags, &oact->sa_flags))
+                         return -EFAULT;
+                __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
+        }
+
+        return ret;
+}
+
+
+asmlinkage int sunos_setsockopt(int fd, int level, int optname,
+                                char __user *optval, int optlen)
+{
+        int tr_opt = optname;
+        int ret;
+
+        if (level == SOL_IP) {
+                /* Multicast socketopts (ttl, membership) */
+                if (tr_opt >=2 && tr_opt <= 6)
+                        tr_opt += 30;
+        }
+        ret = sys_setsockopt(fd, level, tr_opt, optval, optlen);
+        return ret;
+}
+
+asmlinkage int sunos_getsockopt(int fd, int level, int optname,
+                                char __user *optval, int __user *optlen)
+{
+        int tr_opt = optname;
+        int ret;
+
+        if (level == SOL_IP) {
+                /* Multicast socketopts (ttl, membership) */
+                if (tr_opt >=2 && tr_opt <= 6)
+                        tr_opt += 30;
+        }
+        ret = sys_getsockopt(fd, level, tr_opt, optval, optlen);
+        return ret;
+}