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linux/arch/sparc/kernel/sys_sunos.c

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/* $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(&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 = 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(&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, 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 = 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;
}
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