+++ /dev/null
-/* $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/capability.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_path.dentry->d_inode) == MEM_MAJOR &&
- iminor(file->f_path.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(¤t->mm->mmap_sem);
- retval = do_mmap(file, addr, len, prot, flags, off);
- up_write(¤t->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(¤t->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 = global_page_state(NR_FILE_PAGES);
- 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(¤t->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(¤t->sighand->siglock);
- old = current->blocked.sig[0];
- current->blocked.sig[0] |= (blk_mask & _BLOCKABLE);
- recalc_sigpending();
- spin_unlock_irq(¤t->sighand->siglock);
- return old;
-}
-
-asmlinkage unsigned long sunos_sigsetmask(unsigned long newmask)
-{
- unsigned long retval;
-
- spin_lock_irq(¤t->sighand->siglock);
- retval = current->blocked.sig[0];
- current->blocked.sig[0] = (newmask & _BLOCKABLE);
- recalc_sigpending();
- spin_unlock_irq(¤t->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, u64 ino, unsigned int d_type)
-{
- struct sunos_dirent __user *dirent;
- struct sunos_dirent_callback * buf = __buf;
- unsigned long d_ino;
- int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1);
-
- 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)
- return -EOVERFLOW;
- dirent = buf->previous;
- if (dirent)
- put_user(offset, &dirent->d_off);
- dirent = buf->curr;
- buf->previous = dirent;
- 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);
- 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, u64 ino, unsigned int d_type)
-{
- struct sunos_direntry __user *dirent;
- struct sunos_direntry_callback *buf = __buf;
- unsigned long d_ino;
- int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1);
-
- 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)
- return -EOVERFLOW;
- dirent = buf->previous;
- dirent = buf->curr;
- buf->previous = dirent;
- 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);
- 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], &utsname()->sysname[0],
- sizeof(name->sname) - 1);
- if (!ret) {
- ret |= __copy_to_user(&name->nname[0], &utsname()->nodename[0],
- sizeof(name->nname) - 1);
- ret |= __put_user('\0', &name->nname[8]);
- ret |= __copy_to_user(&name->rel[0], &utsname()->release[0],
- sizeof(name->rel) - 1);
- ret |= __copy_to_user(&name->ver[0], &utsname()->version[0],
- sizeof(name->ver) - 1);
- ret |= __copy_to_user(&name->mach[0], &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_path.dentry->d_inode;
-
- socket = SOCKET_I(inode);
- local.sin_family = AF_INET;
- local.sin_addr.s_addr = htonl(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;
-}
-
-asmlinkage int sunos_killpg(int pgrp, int sig)
-{
- int ret;
-
- rcu_read_lock();
- ret = -EINVAL;
- if (pgrp > 0)
- ret = kill_pgrp(find_vpid(pgrp), sig, 0);
- rcu_read_unlock();
-
- 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 = current->signal->rlim[RLIMIT_NPROC].rlim_cur;
- break;
- case _SC_CLK_TCK:
- ret = HZ;
- break;
- case _SC_NGROUPS_MAX:
- ret = NGROUPS_MAX;
- break;
- case _SC_OPEN_MAX:
- ret = current->signal->rlim[RLIMIT_NOFILE].rlim_cur;
- 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;
-}
git.openpandora.org / pandora-kernel.git / blobdiff