/* $Id: sys_sunos.c,v 1.40 1996/04/25 09:11:36 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)
*
* The sunos_poll routine is based on iBCS2's poll routine, this
* is the copyright message for that file:
*
* This file contains the procedures for the handling of poll.
*
* Copyright (C) 1994 Eric Youngdale
*
* Created for Linux based loosely upon linux select code, which
* in turn is loosely based upon Mathius Lattner's minix
* patches by Peter MacDonald. Heavily edited by Linus.
*
* Poll is used by SVr4 instead of select, and it has considerably
* more functionality. Parts of it are related to STREAMS, and since
* we do not have streams, we fake it. In fact, select() still exists
* under SVr4, but libc turns it into a poll() call instead. We attempt
* to do the inverse mapping.
*/
#include <linux/config.h>
#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/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 <asm/segment.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/nfs_mount.h>
/* for sunos_select */
#include <linux/time.h>
#include <linux/personality.h>
extern unsigned long get_sparc_unmapped_area(unsigned long len);
/* 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) {
printk("%s: unimplemented SunOS MAP_NORESERVE mmap() flag\n",
current->comm);
flags &= ~MAP_NORESERVE;
}
if(!(flags & MAP_ANONYMOUS))
if (fd >= NR_OPEN || !(file = current->files->fd[fd]))
return -EBADF;
if(!(flags & MAP_FIXED) && !addr) {
addr = get_sparc_unmapped_area(len);
if(!addr)
return -ENOMEM;
}
/* 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(MAJOR(file->f_inode->i_rdev) == MEM_MAJOR &&
MINOR(file->f_inode->i_rdev) == 5) {
flags |= MAP_ANONYMOUS;
file = 0;
}
ret_type = flags & _MAP_NEW;
flags &= ~_MAP_NEW;
retval = do_mmap(file, addr, len, prot, flags, off);
if(ret_type)
return retval;
else
return ((retval < KERNBASE) ? 0 : 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 new brk value as a return
* on success and ENOMEM as before on failure.
*/
asmlinkage int sunos_brk(unsigned long brk)
{
int freepages;
unsigned long rlim;
unsigned long newbrk, oldbrk;
if (brk < current->mm->end_code)
return -ENOMEM;
newbrk = PAGE_ALIGN(brk);
oldbrk = PAGE_ALIGN(current->mm->brk);
if (oldbrk == newbrk) {
current->mm->brk = brk;
return 0;
}
/*
* Always allow shrinking brk
*/
if (brk <= current->mm->brk) {
current->mm->brk = brk;
do_munmap(newbrk, oldbrk-newbrk);
return 0;
}
/*
* Check against rlimit and stack..
*/
rlim = current->rlim[RLIMIT_DATA].rlim_cur;
if (rlim >= RLIM_INFINITY)
rlim = ~0;
if (brk - current->mm->end_code > rlim)
return -ENOMEM;
/*
* Check against existing mmap mappings.
*/
if (find_vma_intersection(current, oldbrk, newbrk+PAGE_SIZE))
return -ENOMEM;
/*
* 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 -= MAP_NR(high_memory) >> 4;
freepages -= (newbrk-oldbrk) >> PAGE_SHIFT;
if (freepages < 0)
return -ENOMEM;
/*
* 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);
return 0;
}
asmlinkage unsigned long sunos_sbrk(int increment)
{
int error;
/* This should do it hopefully... */
error = sunos_brk(((int) current->mm->brk) + increment);
if(error)
return error;
else
return current->mm->brk;
}
/* 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)
{
printk("%s: Call to sunos_sstk(increment<%d>) is unsupported\n",
current->comm, increment);
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... */
printk("%s: Advises us to use %s paging strategy\n",
current->comm,
strategy <= 3 ? vstrings[strategy] : "BOGUS");
return; /* We don't do diddly... */
}
/* 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(unsigned long address, unsigned long len,
unsigned long strategy)
{
/* I wanna see who uses this... */
printk("%s: Advises us to use %s paging strategy for addr<%08lx> len<%08lx>\n",
current->comm,
strategy <= 4 ? mstrings[strategy] : "BOGUS",
address, len);
return; /* We don't do diddly... */
}
/* 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(unsigned long addr, unsigned long len, char *array)
{
pgd_t *pgdp;
pmd_t *pmdp;
pte_t *ptep;
unsigned long limit;
int num_pages, pnum;
if(addr & (PAGE_SIZE - 1))
return -EINVAL;
num_pages = (len / PAGE_SIZE);
if(verify_area(VERIFY_WRITE, array, num_pages))
return -EFAULT; /* bum array, you lose... */
if((addr >= KERNBASE) || ((addr + len) > KERNBASE))
return -ENOMEM; /* I'm sure you're curious about kernel mappings.. */
/* Wheee, go through pte's */
pnum = 0;
for(limit = addr + len; addr < limit; addr += PAGE_SIZE, pnum++) {
pgdp = pgd_offset(current->mm, addr);
if(pgd_none(*pgdp))
return -ENOMEM; /* As per SunOS manpage */
pmdp = pmd_offset(pgdp, addr);
if(pmd_none(*pmdp))
return -ENOMEM; /* As per SunOS manpage */
ptep = pte_offset(pmdp, addr);
if(pte_none(*ptep))
return -ENOMEM; /* As per SunOS manpage */
/* Page in core or Swapped page? */
array[pnum] = pte_present(*ptep) ? 1 : 0;
}
return 0; /* Success... I think... */
}
/* 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 NR_OPEN;
}
#define _S(nr) (1<<((nr)-1))
#define _BLOCKABLE (~(_S(SIGKILL) | _S(SIGSTOP)))
asmlinkage unsigned long sunos_sigblock(unsigned long blk_mask)
{
unsigned long flags;
unsigned long old;
save_flags(flags); cli();
old = current->blocked;
current->blocked |= (blk_mask & _BLOCKABLE);
restore_flags(flags);
return old;
}
asmlinkage unsigned long sunos_sigsetmask(unsigned long newmask)
{
unsigned long flags;
unsigned long retval;
save_flags(flags); cli();
retval = current->blocked;
current->blocked = newmask & _BLOCKABLE;
restore_flags(flags);
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 *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(long)-1) & ~(sizeof(long)-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);
memcpy_tofs(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, void * dirent, int cnt)
{
struct file * file;
struct sunos_dirent * lastdirent;
struct sunos_dirent_callback buf;
int error;
if (fd >= NR_OPEN || !(file = current->files->fd[fd]))
return -EBADF;
if (!file->f_op || !file->f_op->readdir)
return -ENOTDIR;
if(verify_area(VERIFY_WRITE, dirent, cnt))
return -EFAULT;
if(cnt < (sizeof(struct sunos_dirent) + 255))
return -EINVAL;
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)
return error;
lastdirent = buf.previous;
if (!lastdirent)
return buf.error;
put_user(file->f_pos, &lastdirent->d_off);
return cnt - buf.count;
}
/* 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 *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);
memcpy_tofs(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, void * dirent, int cnt, unsigned int *basep)
{
struct file * file;
struct sunos_direntry * lastdirent;
struct sunos_direntry_callback buf;
int error;
if (fd >= NR_OPEN || !(file = current->files->fd[fd]))
return -EBADF;
if (!file->f_op || !file->f_op->readdir)
return -ENOTDIR;
if(verify_area(VERIFY_WRITE, dirent, cnt) ||
verify_area(VERIFY_WRITE, basep, sizeof(unsigned int)))
return -EFAULT;
if(cnt < (sizeof(struct sunos_direntry) + 255))
return -EINVAL;
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)
return error;
lastdirent = buf.previous;
if (!lastdirent)
return buf.error;
put_user(file->f_pos, basep);
return cnt - buf.count;
}
asmlinkage int sunos_getdomainname(char *name, int len)
{
int error;
if(len > __NEW_UTS_LEN)
return -EFAULT;
error = verify_area(VERIFY_WRITE, name, len);
if(error)
return -EFAULT;
memcpy_tofs(name, system_utsname.domainname, len);
return 0;
}
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 *name)
{
int error;
if(!name)
return -EFAULT;
error = verify_area(VERIFY_WRITE, name, sizeof *name);
if(error)
return error;
memcpy_tofs(&name->sname[0], &system_utsname.sysname[0],
sizeof(name->sname) - 1);
memcpy_tofs(&name->nname[0], &system_utsname.nodename[0],
sizeof(name->nname) - 1);
name->nname[8] = '\0';
memcpy_tofs(&name->rel[0], &system_utsname.release[0],
sizeof(name->rel) - 1);
memcpy_tofs(&name->ver[0], &system_utsname.version[0],
sizeof(name->ver) - 1);
memcpy_tofs(&name->mach[0], &system_utsname.machine[0],
sizeof(name->mach) - 1);
return 0;
}
asmlinkage int sunos_nosys(void)
{
struct pt_regs *regs;
regs = (struct pt_regs *) (current->saved_kernel_stack +
sizeof(struct reg_window));
current->tss.sig_address = regs->pc;
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);
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)
{
switch(name) {
case _PCONF_LINK:
return LINK_MAX;
case _PCONF_CANON:
return MAX_CANON;
case _PCONF_INPUT:
return MAX_INPUT;
case _PCONF_NAME:
return NAME_MAX;
case _PCONF_PATH:
return PATH_MAX;
case _PCONF_PIPE:
return PIPE_BUF;
case _PCONF_CHRESTRICT:
return 1; /* XXX Investigate XXX */
case _PCONF_NOTRUNC:
return 0; /* XXX Investigate XXX */
case _PCONF_VDISABLE:
return 0;
default:
return -EINVAL;
}
}
asmlinkage int sunos_pathconf(char *path, int name)
{
return sunos_fpathconf(0, name); /* XXX cheese XXX */
}
/* SunOS mount system call emulation */
extern asmlinkage int
sys_select(int n, fd_set *inp, fd_set *outp, fd_set *exp, struct timeval *tvp);
asmlinkage int sunos_select(int width, fd_set *inp, fd_set *outp, fd_set *exp, struct timeval *tvp)
{
/* SunOS binaries expect that select won't change the tvp contents */
current->personality |= STICKY_TIMEOUTS;
return sys_select (width, inp, outp, exp, tvp);
}
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 *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.
*/
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;
}
static int get_default (int value, int def_value)
{
if (value)
return value;
else
return def_value;
}
asmlinkage int sunos_nfs_mount(char *dir_name, int linux_flags, void *data)
{
int ret = -ENODEV, error;
int server_fd;
char *the_name;
struct nfs_mount_data linux_nfs_mount;
struct sunos_nfs_mount_args *sunos_mount = data;
dev_t dev;
error = verify_area(VERIFY_READ, data, sizeof (struct sunos_nfs_mount_args));
if (error)
return error;
/* 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;
}
asmlinkage int
sunos_mount(char *type, char *dir, int flags, void *data)
{
int linux_flags = MS_MGC_MSK; /* new semantics */
int error;
char *dev_fname = 0;
/* We don't handle the integer fs type */
if ((flags & SMNT_NEWTYPE) == 0)
return -EINVAL;
/* Do not allow for those flags we don't support */
if (flags & (SMNT_GRPID|SMNT_NOSUB|SMNT_MULTI|SMNT_SYS5))
return -EINVAL;
if(flags & SMNT_REMOUNT)
linux_flags |= MS_REMOUNT;
if(flags & SMNT_RDONLY)
linux_flags |= MS_RDONLY;
if(flags & SMNT_NOSUID)
linux_flags |= MS_NOSUID;
error = verify_area(VERIFY_READ, type, 16);
if(error)
return error;
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, "ext") == 0) {
dev_fname = (char *) data;
} else if(strcmp(type, "xiafs") == 0) {
dev_fname = (char *) data;
} else if(strcmp(type, "nfs") == 0) {
error = sunos_nfs_mount (dir, flags, data);
return error;
} else if(strcmp(type, "ufs") == 0) {
printk("Warning: UFS filesystem mounts unsupported.\n");
return -ENODEV;
} else if(strcmp(type, "proc")) {
return -ENODEV;
}
if(error)
return error;
error = sys_mount(dev_fname, dir, type, linux_flags, NULL);
return error;
}
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)
{
/* So stupid... */
if((!pid || pid == current->pid) &&
!pgid) {
sys_setsid();
return 0;
} else {
return sys_setpgid(pid, pgid);
}
}
/* So stupid... */
extern asmlinkage int sys_wait4(pid_t, unsigned int *, int, struct rusage *);
asmlinkage int sunos_wait4(pid_t pid, unsigned int *stat_addr, int options, struct rusage *ru)
{
return sys_wait4((pid ? pid : -1), stat_addr, options, ru);
}
extern int kill_pg(int, int, int);
asmlinkage int sunos_killpg(int pgrp, int sig)
{
return kill_pg(pgrp, sig, 0);
}
asmlinkage int sunos_audit(void)
{
printk ("sys_audit\n");
return -1;
}
extern asmlinkage unsigned long sunos_gethostid(void)
{
return (unsigned long) idprom->id_sernum;
}
extern asmlinkage long sunos_sysconf (int name)
{
switch (name){
case _SC_ARG_MAX:
return ARG_MAX;
case _SC_CHILD_MAX:
return CHILD_MAX;
case _SC_CLK_TCK:
return HZ;
case _SC_NGROUPS_MAX:
return NGROUPS_MAX;
case _SC_OPEN_MAX:
return OPEN_MAX;
case _SC_JOB_CONTROL:
return 1; /* yes, we do support job control */
case _SC_SAVED_IDS:
return 1; /* yes, we do support saved uids */
case _SC_VERSION:
/* mhm, POSIX_VERSION is in /usr/include/unistd.h
* should it go on /usr/include/linux?
*/
return 199009L;
}
return -1;
}
#define POLL_ROUND_UP(x,y) (((x)+(y)-1)/(y))
#define POLLIN 1
#define POLLPRI 2
#define POLLOUT 4
#define POLLERR 8
#define POLLHUP 16
#define POLLNVAL 32
#define POLLRDNORM 64
#define POLLWRNORM POLLOUT
#define POLLRDBAND 128
#define POLLWRBAND 256
#define LINUX_POLLIN (POLLRDNORM | POLLRDBAND | POLLIN)
#define LINUX_POLLOUT (POLLWRBAND | POLLWRNORM | POLLOUT)
#define LINUX_POLLERR (POLLERR)
static inline void free_wait(select_table * p)
{
struct select_table_entry * entry = p->entry + p->nr;
while (p->nr > 0) {
p->nr--;
entry--;
remove_wait_queue(entry->wait_address,&entry->wait);
}
}
/* Copied directly from fs/select.c */
static int check(int flag, select_table * wait, struct file * file)
{
struct inode * inode;
struct file_operations *fops;
int (*select) (struct inode *, struct file *, int, select_table *);
inode = file->f_inode;
if ((fops = file->f_op) && (select = fops->select))
return select(inode, file, flag, wait)
|| (wait && select(inode, file, flag, NULL));
if (S_ISREG(inode->i_mode))
return 1;
return 0;
}
struct poll {
int fd;
short events;
short revents;
};
int sunos_poll(struct poll * ufds, size_t nfds, int timeout)
{
int i,j, count, fdcount, error, retflag;
struct poll * fdpnt;
struct poll * fds, *fds1;
select_table wait_table, *wait;
struct select_table_entry *entry;
if ((error = verify_area(VERIFY_READ, ufds, nfds*sizeof(struct poll))))
return error;
if (nfds > NR_OPEN)
return -EINVAL;
if (!(entry = (struct select_table_entry*)__get_free_page(GFP_KERNEL))
|| !(fds = (struct poll *)kmalloc(nfds*sizeof(struct poll), GFP_KERNEL)))
return -ENOMEM;
memcpy_fromfs(fds, ufds, nfds*sizeof(struct poll));
if (timeout < 0)
current->timeout = 0x7fffffff;
else {
current->timeout = jiffies + POLL_ROUND_UP(timeout, (1000/HZ));
if (current->timeout <= jiffies)
current->timeout = 0;
}
count = 0;
wait_table.nr = 0;
wait_table.entry = entry;
wait = &wait_table;
for(fdpnt = fds, j = 0; j < (int)nfds; j++, fdpnt++) {
i = fdpnt->fd;
fdpnt->revents = 0;
if (!current->files->fd[i] || !current->files->fd[i]->f_inode)
fdpnt->revents = POLLNVAL;
}
repeat:
current->state = TASK_INTERRUPTIBLE;
for(fdpnt = fds, j = 0; j < (int)nfds; j++, fdpnt++) {
i = fdpnt->fd;
if(i < 0) continue;
if (!current->files->fd[i] || !current->files->fd[i]->f_inode) continue;
if ((fdpnt->events & LINUX_POLLIN)
&& check(SEL_IN, wait, current->files->fd[i])) {
if (fdpnt->events & POLLIN)
retflag = POLLIN;
if (fdpnt->events & POLLRDNORM)
retflag = POLLRDNORM;
fdpnt->revents |= retflag;
count++;
wait = NULL;
}
if ((fdpnt->events & LINUX_POLLOUT) &&
check(SEL_OUT, wait, current->files->fd[i])) {
fdpnt->revents |= (LINUX_POLLOUT & fdpnt->events);
count++;
wait = NULL;
}
if (check(SEL_EX, wait, current->files->fd[i])) {
fdpnt->revents |= POLLHUP;
count++;
wait = NULL;
}
}
if ((current->signal & (~current->blocked)))
return -EINTR;
wait = NULL;
if (!count && current->timeout > jiffies) {
schedule();
goto repeat;
}
free_wait(&wait_table);
free_page((unsigned long) entry);
/* OK, now copy the revents fields back to user space. */
fds1 = fds;
fdcount = 0;
for(i=0; i < (int)nfds; i++, ufds++, fds++) {
if (fds->revents) {
fdcount++;
}
put_fs_word(fds->revents, &ufds->revents);
}
kfree(fds1);
current->timeout = 0;
current->state = TASK_RUNNING;
return fdcount;
}
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, unsigned long arg1, unsigned long arg2,
unsigned long arg3)
{
unsigned long raddr;
int rval;
switch(op) {
case 0:
/* sys_shmat(): attach a shared memory area */
rval = sys_shmat((int)arg1,(char *)arg2,(int)arg3,&raddr);
if(rval != 0)
return rval;
return (int) raddr;
case 1:
/* sys_shmctl(): modify shared memory area attr. */
return sys_shmctl((int)arg1,(int)arg2,(struct shmid_ds *)arg3);
case 2:
/* sys_shmdt(): detach a shared memory area */
return sys_shmdt((char *)arg1);
case 3:
/* sys_shmget(): get a shared memory area */
return sys_shmget((key_t)arg1,(int)arg2,(int)arg3);
default:
return -EINVAL;
}
}
