File: [Development] / linux-2.4-xfs / arch / x86_64 / ia32 / sys_ia32.c (download)
Revision 1.5, Thu Jan 20 13:59:19 2005 UTC (12 years, 8 months ago) by nathans.longdrop.melbourne.sgi.com
Branch: MAIN
Changes since 1.4: +1 -1
lines
Merge up to 2.4.29.
Merge of 2.4.x-xfs-melb:linux:21231a by kenmcd.
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/*
* sys_ia32.c: Conversion between 32bit and 64bit native syscalls. Based on
* sys_sparc32
*
* Copyright (C) 2000 VA Linux Co
* Copyright (C) 2000 Don Dugger <n0ano@valinux.com>
* Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com>
* Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
* Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
* Copyright (C) 2000 Hewlett-Packard Co.
* Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com>
* Copyright (C) 2000,2001,2002 Andi Kleen, SuSE Labs (x86-64 port)
*
* These routines maintain argument size conversion between 32bit and 64bit
* environment. In 2.5 most of this should be moved to a generic directory.
*
* This file assumes that there is a hole at the end of user address space.
*
* $Id: sys_ia32.c,v 1.70 2004/03/03 23:36:43 ak Exp $
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/fs.h>
#include <linux/file.h>
#include <linux/signal.h>
#include <linux/utime.h>
#include <linux/resource.h>
#include <linux/times.h>
#include <linux/utsname.h>
#include <linux/timex.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/sem.h>
#include <linux/msg.h>
#include <linux/mm.h>
#include <linux/shm.h>
#include <linux/slab.h>
#include <linux/uio.h>
#include <linux/nfs_fs.h>
#include <linux/smb_fs.h>
#include <linux/smb_mount.h>
#include <linux/ncp_fs.h>
#include <linux/quota.h>
#include <linux/module.h>
#include <linux/sunrpc/svc.h>
#include <linux/nfsd/nfsd.h>
#include <linux/nfsd/cache.h>
#include <linux/nfsd/xdr.h>
#include <linux/nfsd/syscall.h>
#include <linux/poll.h>
#include <linux/personality.h>
#include <linux/stat.h>
#include <linux/ipc.h>
#include <linux/rwsem.h>
#include <linux/binfmts.h>
#include <linux/init.h>
#include <linux/highuid.h>
#include <asm/mman.h>
#include <asm/types.h>
#include <asm/uaccess.h>
#include <asm/semaphore.h>
#include <asm/ipc.h>
#include <asm/atomic.h>
#include <asm/ldt.h>
#include <net/scm.h>
#include <net/sock.h>
#include <asm/ia32.h>
#define A(__x) ((unsigned long)(__x))
#define AA(__x) ((unsigned long)(__x))
#define ROUND_UP(x,a) ((__typeof__(x))(((unsigned long)(x) + ((a) - 1)) & ~((a) - 1)))
#define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de)))
#undef high2lowuid
#undef high2lowgid
#undef low2highuid
#undef low2highgid
#define high2lowuid(uid) ((uid) > 65535) ? (u16)overflowuid : (u16)(uid)
#define high2lowgid(gid) ((gid) > 65535) ? (u16)overflowgid : (u16)(gid)
#define low2highuid(uid) ((uid) == (u16)-1) ? (uid_t)-1 : (uid_t)(uid)
#define low2highgid(gid) ((gid) == (u16)-1) ? (gid_t)-1 : (gid_t)(gid)
extern int overflowuid,overflowgid;
typedef u16 old_uid_t;
typedef u16 old_gid_t;
#include "../../../kernel/uid16.c"
static int
putstat(struct stat32 *ubuf, struct stat *kbuf)
{
if (kbuf->st_size > 0x7fffffff)
return -EOVERFLOW;
if (verify_area(VERIFY_WRITE, ubuf, sizeof(struct stat32)) ||
__put_user (kbuf->st_dev, &ubuf->st_dev) ||
__put_user (kbuf->st_ino, &ubuf->st_ino) ||
__put_user (kbuf->st_mode, &ubuf->st_mode) ||
__put_user (kbuf->st_nlink, &ubuf->st_nlink) ||
__put_user (high2lowuid(kbuf->st_uid), &ubuf->st_uid) ||
__put_user (high2lowgid(kbuf->st_gid), &ubuf->st_gid) ||
__put_user (kbuf->st_rdev, &ubuf->st_rdev) ||
__put_user (kbuf->st_size, &ubuf->st_size) ||
__put_user (kbuf->st_atime, &ubuf->st_atime) ||
__put_user (kbuf->st_mtime, &ubuf->st_mtime) ||
__put_user (kbuf->st_ctime, &ubuf->st_ctime) ||
__put_user (kbuf->st_blksize, &ubuf->st_blksize) ||
__put_user (kbuf->st_blocks, &ubuf->st_blocks))
return -EFAULT;
return 0;
}
extern asmlinkage long sys_newstat(char * filename, struct stat * statbuf);
asmlinkage long
sys32_newstat(char * filename, struct stat32 *statbuf)
{
char *name;
int ret;
struct stat s;
mm_segment_t old_fs = get_fs();
name = getname(filename);
if (IS_ERR(name))
return PTR_ERR(name);
set_fs (KERNEL_DS);
ret = sys_newstat(name, &s);
set_fs (old_fs);
putname(name);
if (ret)
return ret;
return putstat(statbuf, &s);
}
extern asmlinkage long sys_newlstat(char * filename, struct stat * statbuf);
asmlinkage long
sys32_newlstat(char * filename, struct stat32 *statbuf)
{
char *name;
int ret;
struct stat s;
mm_segment_t old_fs = get_fs();
name = getname(filename);
if (IS_ERR(name))
return PTR_ERR(name);
set_fs (KERNEL_DS);
ret = sys_newlstat(name, &s);
set_fs (old_fs);
putname(name);
if (ret)
return ret;
return putstat(statbuf, &s);
}
extern asmlinkage long sys_newfstat(unsigned int fd, struct stat * statbuf);
asmlinkage long
sys32_newfstat(unsigned int fd, struct stat32 *statbuf)
{
int ret;
struct stat s;
mm_segment_t old_fs = get_fs();
set_fs (KERNEL_DS);
ret = sys_newfstat(fd, &s);
set_fs (old_fs);
if (ret)
return ret;
return putstat(statbuf, &s);
}
extern long sys_truncate(char *, loff_t);
asmlinkage long
sys32_truncate64(char * filename, unsigned long offset_low, unsigned long offset_high)
{
return sys_truncate(filename, ((loff_t) offset_high << 32) | offset_low);
}
extern long sys_ftruncate(int, loff_t);
asmlinkage long
sys32_ftruncate64(unsigned int fd, unsigned long offset_low, unsigned long offset_high)
{
return sys_ftruncate(fd, ((loff_t) offset_high << 32) | offset_low);
}
/* Another set for IA32/LFS -- x86_64 struct stat is different due to
support for 64bit inode numbers. */
static int
putstat64(struct stat64 *ubuf, struct stat *kbuf)
{
if (verify_area(VERIFY_WRITE, ubuf, sizeof(struct stat64)) ||
__put_user (kbuf->st_dev, &ubuf->st_dev) ||
__put_user (kbuf->st_ino, &ubuf->__st_ino) ||
__put_user (kbuf->st_ino, &ubuf->st_ino) ||
__put_user (kbuf->st_mode, &ubuf->st_mode) ||
__put_user (kbuf->st_nlink, &ubuf->st_nlink) ||
__put_user (kbuf->st_uid, &ubuf->st_uid) ||
__put_user (kbuf->st_gid, &ubuf->st_gid) ||
__put_user (kbuf->st_rdev, &ubuf->st_rdev) ||
__put_user (kbuf->st_size, &ubuf->st_size) ||
__put_user (kbuf->st_atime, &ubuf->st_atime) ||
__put_user (kbuf->st_mtime, &ubuf->st_mtime) ||
__put_user (kbuf->st_ctime, &ubuf->st_ctime) ||
__put_user (kbuf->st_blksize, &ubuf->st_blksize) ||
__put_user (kbuf->st_blocks, &ubuf->st_blocks))
return -EFAULT;
return 0;
}
asmlinkage long
sys32_stat64(char * filename, struct stat64 *statbuf)
{
char *name;
int ret;
struct stat s;
mm_segment_t old_fs = get_fs();
name = getname(filename);
if (IS_ERR(name))
return PTR_ERR(name);
set_fs (KERNEL_DS);
ret = sys_newstat(name, &s);
set_fs (old_fs);
putname(name);
if (ret)
return ret;
return putstat64(statbuf, &s);
}
asmlinkage long
sys32_lstat64(char * filename, struct stat64 *statbuf)
{
char *name;
int ret;
struct stat s;
mm_segment_t old_fs = get_fs();
name = getname(filename);
if (IS_ERR(name))
return PTR_ERR(name);
set_fs (KERNEL_DS);
ret = sys_newlstat(name, &s);
set_fs (old_fs);
putname(name);
if (ret)
return ret;
return putstat64(statbuf, &s);
}
asmlinkage long
sys32_fstat64(unsigned int fd, struct stat64 *statbuf)
{
int ret;
struct stat s;
mm_segment_t old_fs = get_fs();
set_fs (KERNEL_DS);
ret = sys_newfstat(fd, &s);
set_fs (old_fs);
if (ret)
return ret;
return putstat64(statbuf, &s);
}
/* Don't set O_LARGEFILE implicitely. */
asmlinkage long sys32_open(const char * filename, int flags, int mode)
{
char * tmp;
int fd, error;
tmp = getname(filename);
fd = PTR_ERR(tmp);
if (!IS_ERR(tmp)) {
fd = get_unused_fd();
if (fd >= 0) {
struct file *f = filp_open(tmp, flags, mode);
error = PTR_ERR(f);
if (IS_ERR(f))
goto out_error;
fd_install(fd, f);
}
out:
putname(tmp);
}
return fd;
out_error:
put_unused_fd(fd);
fd = error;
goto out;
}
/*
* Linux/i386 didn't use to be able to handle more than
* 4 system call parameters, so these system calls used a memory
* block for parameter passing..
*/
struct mmap_arg_struct {
unsigned int addr;
unsigned int len;
unsigned int prot;
unsigned int flags;
unsigned int fd;
unsigned int offset;
};
asmlinkage long
sys32_mmap(struct mmap_arg_struct *arg)
{
struct mmap_arg_struct a;
struct file *file = NULL;
unsigned long retval;
struct mm_struct *mm ;
if (copy_from_user(&a, arg, sizeof(a)))
return -EFAULT;
if (a.offset & ~PAGE_MASK)
return -EINVAL;
if (!(a.flags & MAP_ANONYMOUS)) {
file = fget(a.fd);
if (!file)
return -EBADF;
}
if (a.prot & PROT_READ)
a.prot |= PROT_EXEC;
mm = current->mm;
down_write(&mm->mmap_sem);
retval = do_mmap_pgoff(file, a.addr, a.len, a.prot, a.flags, a.offset>>PAGE_SHIFT);
if (file)
fput(file);
up_write(&mm->mmap_sem);
return retval;
}
extern asmlinkage long sys_mprotect(unsigned long start,size_t len,unsigned long prot);
asmlinkage long sys32_mprotect(unsigned long start, size_t len, unsigned long prot)
{
if (prot & PROT_READ)
prot |= PROT_EXEC;
return sys_mprotect(start,len,prot);
}
asmlinkage long
sys32_pipe(int *fd)
{
int retval;
int fds[2];
retval = do_pipe(fds);
if (retval)
goto out;
if (copy_to_user(fd, fds, sizeof(fds)))
retval = -EFAULT;
out:
return retval;
}
asmlinkage long
sys32_rt_sigaction(int sig, struct sigaction32 *act,
struct sigaction32 *oact, unsigned int sigsetsize)
{
struct k_sigaction new_ka, old_ka;
int ret;
sigset32_t set32;
/* XXX: Don't preclude handling different sized sigset_t's. */
if (sigsetsize != sizeof(sigset32_t))
return -EINVAL;
if (act) {
u32 handler, restorer;
if (verify_area(VERIFY_READ, act, sizeof(*act)) ||
__get_user(handler, &act->sa_handler) ||
__get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
__get_user(restorer, &act->sa_restorer)||
__copy_from_user(&set32, &act->sa_mask, sizeof(sigset32_t)))
return -EFAULT;
new_ka.sa.sa_handler = (void*)(u64)handler;
new_ka.sa.sa_restorer = (void*)(u64)restorer;
/* FIXME: here we rely on _IA32_NSIG_WORS to be >= than _NSIG_WORDS << 1 */
switch (_NSIG_WORDS) {
case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6]
| (((long)set32.sig[7]) << 32);
case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4]
| (((long)set32.sig[5]) << 32);
case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2]
| (((long)set32.sig[3]) << 32);
case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0]
| (((long)set32.sig[1]) << 32);
}
}
ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
if (!ret && oact) {
/* FIXME: here we rely on _IA32_NSIG_WORS to be >= than _NSIG_WORDS << 1 */
switch (_NSIG_WORDS) {
case 4:
set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32);
set32.sig[6] = old_ka.sa.sa_mask.sig[3];
case 3:
set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32);
set32.sig[4] = old_ka.sa.sa_mask.sig[2];
case 2:
set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32);
set32.sig[2] = old_ka.sa.sa_mask.sig[1];
case 1:
set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32);
set32.sig[0] = old_ka.sa.sa_mask.sig[0];
}
if (verify_area(VERIFY_WRITE, oact, sizeof(*oact)) ||
__put_user((long)old_ka.sa.sa_handler, &oact->sa_handler) ||
__put_user((long)old_ka.sa.sa_restorer, &oact->sa_restorer) ||
__put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
__copy_to_user(&oact->sa_mask, &set32, sizeof(sigset32_t)))
return -EFAULT;
}
return ret;
}
asmlinkage long
sys32_sigaction (int sig, struct old_sigaction32 *act, struct old_sigaction32 *oact)
{
struct k_sigaction new_ka, old_ka;
int ret;
if (act) {
old_sigset32_t mask;
u32 handler, restorer;
if (verify_area(VERIFY_READ, act, sizeof(*act)) ||
__get_user(handler, &act->sa_handler) ||
__get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
__get_user(restorer, &act->sa_restorer) ||
__get_user(mask, &act->sa_mask))
return -EFAULT;
new_ka.sa.sa_handler = (void*)(u64)handler;
new_ka.sa.sa_restorer = (void*)(u64)restorer;
siginitset(&new_ka.sa.sa_mask, mask);
}
ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
if (!ret && oact) {
if (verify_area(VERIFY_WRITE, oact, sizeof(*oact)) ||
__put_user((long)old_ka.sa.sa_handler, &oact->sa_handler) ||
__put_user((long)old_ka.sa.sa_restorer, &oact->sa_restorer) ||
__put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
__put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
return -EFAULT;
}
return ret;
}
extern asmlinkage long sys_rt_sigprocmask(int how, sigset_t *set, sigset_t *oset,
size_t sigsetsize);
asmlinkage long
sys32_rt_sigprocmask(int how, sigset32_t *set, sigset32_t *oset,
unsigned int sigsetsize)
{
sigset_t s;
sigset32_t s32;
int ret;
mm_segment_t old_fs = get_fs();
if (set) {
if (copy_from_user (&s32, set, sizeof(sigset32_t)))
return -EFAULT;
switch (_NSIG_WORDS) {
case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
}
}
set_fs (KERNEL_DS);
ret = sys_rt_sigprocmask(how, set ? &s : NULL, oset ? &s : NULL,
sigsetsize);
set_fs (old_fs);
if (ret) return ret;
if (oset) {
switch (_NSIG_WORDS) {
case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
}
if (copy_to_user (oset, &s32, sizeof(sigset32_t)))
return -EFAULT;
}
return 0;
}
static int
put_statfs (struct statfs32 *ubuf, struct statfs *kbuf)
{
if (verify_area(VERIFY_WRITE, ubuf, sizeof(struct statfs32)) ||
__put_user (kbuf->f_type, &ubuf->f_type) ||
__put_user (kbuf->f_bsize, &ubuf->f_bsize) ||
__put_user (kbuf->f_blocks, &ubuf->f_blocks) ||
__put_user (kbuf->f_bfree, &ubuf->f_bfree) ||
__put_user (kbuf->f_bavail, &ubuf->f_bavail) ||
__put_user (kbuf->f_files, &ubuf->f_files) ||
__put_user (kbuf->f_ffree, &ubuf->f_ffree) ||
__put_user (kbuf->f_namelen, &ubuf->f_namelen) ||
__put_user (kbuf->f_fsid.val[0], &ubuf->f_fsid.val[0]) ||
__put_user (kbuf->f_fsid.val[1], &ubuf->f_fsid.val[1]) ||
__put_user (0, &ubuf->f_spare[0]) ||
__put_user (0, &ubuf->f_spare[1]) ||
__put_user (0, &ubuf->f_spare[2]) ||
__put_user (0, &ubuf->f_spare[3]) ||
__put_user (0, &ubuf->f_spare[4]) ||
__put_user (0, &ubuf->f_spare[5]))
return -EFAULT;
return 0;
}
extern asmlinkage long sys_statfs(const char * path, struct statfs * buf);
asmlinkage long
sys32_statfs(const char * path, struct statfs32 *buf)
{
int ret;
struct statfs s;
mm_segment_t old_fs = get_fs();
const char *name;
name = getname(path);
if (IS_ERR(name))
return PTR_ERR(name);
set_fs (KERNEL_DS);
ret = sys_statfs(name, &s);
set_fs (old_fs);
putname(name);
if (put_statfs(buf, &s))
return -EFAULT;
return ret;
}
extern asmlinkage long sys_fstatfs(unsigned int fd, struct statfs * buf);
asmlinkage long
sys32_fstatfs(unsigned int fd, struct statfs32 *buf)
{
int ret;
struct statfs s;
mm_segment_t old_fs = get_fs();
set_fs (KERNEL_DS);
ret = sys_fstatfs(fd, &s);
set_fs (old_fs);
if (put_statfs(buf, &s))
return -EFAULT;
return ret;
}
struct timeval32
{
int tv_sec, tv_usec;
};
struct itimerval32
{
struct timeval32 it_interval;
struct timeval32 it_value;
};
static long
get_tv32(struct timeval *o, struct timeval32 *i)
{
int err = -EFAULT;
if (access_ok(VERIFY_READ, i, sizeof(*i))) {
err = __get_user(o->tv_sec, &i->tv_sec);
err |= __get_user(o->tv_usec, &i->tv_usec);
}
return err;
}
static long
put_tv32(struct timeval32 *o, struct timeval *i)
{
int err = -EFAULT;
if (access_ok(VERIFY_WRITE, o, sizeof(*o))) {
err = __put_user(i->tv_sec, &o->tv_sec);
err |= __put_user(i->tv_usec, &o->tv_usec);
}
return err;
}
static long
get_it32(struct itimerval *o, struct itimerval32 *i)
{
int err = -EFAULT;
if (access_ok(VERIFY_READ, i, sizeof(*i))) {
err = __get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec);
err |= __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec);
err |= __get_user(o->it_value.tv_sec, &i->it_value.tv_sec);
err |= __get_user(o->it_value.tv_usec, &i->it_value.tv_usec);
}
return err;
}
static long
put_it32(struct itimerval32 *o, struct itimerval *i)
{
int err = -EFAULT;
if (access_ok(VERIFY_WRITE, o, sizeof(*o))) {
err = __put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec);
err |= __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec);
err |= __put_user(i->it_value.tv_sec, &o->it_value.tv_sec);
err |= __put_user(i->it_value.tv_usec, &o->it_value.tv_usec);
}
return err;
}
extern int do_getitimer(int which, struct itimerval *value);
asmlinkage long
sys32_getitimer(int which, struct itimerval32 *it)
{
struct itimerval kit;
int error;
error = do_getitimer(which, &kit);
if (!error && put_it32(it, &kit))
error = -EFAULT;
return error;
}
extern int do_setitimer(int which, struct itimerval *, struct itimerval *);
asmlinkage long
sys32_setitimer(int which, struct itimerval32 *in, struct itimerval32 *out)
{
struct itimerval kin, kout;
int error;
if (in) {
if (get_it32(&kin, in))
return -EFAULT;
} else
memset(&kin, 0, sizeof(kin));
error = do_setitimer(which, &kin, out ? &kout : NULL);
if (error || !out)
return error;
if (put_it32(out, &kout))
return -EFAULT;
return 0;
}
asmlinkage long
sys32_alarm(unsigned int seconds)
{
struct itimerval it_new, it_old;
unsigned int oldalarm;
it_new.it_interval.tv_sec = it_new.it_interval.tv_usec = 0;
it_new.it_value.tv_sec = seconds;
it_new.it_value.tv_usec = 0;
do_setitimer(ITIMER_REAL, &it_new, &it_old);
oldalarm = it_old.it_value.tv_sec;
/* ehhh.. We can't return 0 if we have an alarm pending.. */
/* And we'd better return too much than too little anyway */
if (it_old.it_value.tv_usec)
oldalarm++;
return oldalarm;
}
/* Translations due to time_t size differences. Which affects all
sorts of things, like timeval and itimerval. */
struct utimbuf_32 {
int atime;
int mtime;
};
extern asmlinkage long sys_utimes(char * filename, struct timeval * utimes);
extern asmlinkage long sys_gettimeofday (struct timeval *tv, struct timezone *tz);
extern struct timezone sys_tz;
extern int do_sys_settimeofday(struct timeval *tv, struct timezone *tz);
asmlinkage long
sys32_gettimeofday(struct timeval32 *tv, struct timezone *tz)
{
if (tv) {
struct timeval ktv;
do_gettimeofday(&ktv);
if (put_tv32(tv, &ktv))
return -EFAULT;
}
if (tz) {
if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
return -EFAULT;
}
return 0;
}
asmlinkage long
sys32_settimeofday(struct timeval32 *tv, struct timezone *tz)
{
struct timeval ktv;
struct timezone ktz;
if (tv) {
if (get_tv32(&ktv, tv))
return -EFAULT;
}
if (tz) {
if (copy_from_user(&ktz, tz, sizeof(ktz)))
return -EFAULT;
}
return do_sys_settimeofday(tv ? &ktv : NULL, tz ? &ktz : NULL);
}
struct linux32_dirent {
u32 d_ino;
u32 d_off;
u16 d_reclen;
char d_name[1];
};
struct old_linux32_dirent {
u32 d_ino;
u32 d_offset;
u16 d_namlen;
char d_name[1];
};
struct getdents32_callback {
struct linux32_dirent * current_dir;
struct linux32_dirent * previous;
int count;
int error;
};
struct readdir32_callback {
struct old_linux32_dirent * dirent;
int count;
};
static int
filldir32 (void *__buf, const char *name, int namlen, loff_t offset, ino_t ino,
unsigned int d_type)
{
struct linux32_dirent * dirent;
struct getdents32_callback * buf = (struct getdents32_callback *) __buf;
int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1, 4);
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->current_dir;
buf->previous = dirent;
put_user(ino, &dirent->d_ino);
put_user(reclen, &dirent->d_reclen);
copy_to_user(dirent->d_name, name, namlen);
put_user(0, dirent->d_name + namlen);
dirent = ((void *)dirent) + reclen;
buf->current_dir = dirent;
buf->count -= reclen;
return 0;
}
asmlinkage long
sys32_getdents (unsigned int fd, void * dirent, unsigned int count)
{
struct file * file;
struct linux32_dirent * lastdirent;
struct getdents32_callback buf;
int error;
error = -EBADF;
file = fget(fd);
if (!file)
goto out;
buf.current_dir = (struct linux32_dirent *) dirent;
buf.previous = NULL;
buf.count = count;
buf.error = 0;
error = vfs_readdir(file, filldir32, &buf);
if (error < 0)
goto out_putf;
error = buf.error;
lastdirent = buf.previous;
if (lastdirent) {
put_user(file->f_pos, &lastdirent->d_off);
error = count - buf.count;
}
out_putf:
fput(file);
out:
return error;
}
static int
fillonedir32 (void * __buf, const char * name, int namlen, loff_t offset, ino_t ino, unsigned d_type)
{
struct readdir32_callback * buf = (struct readdir32_callback *) __buf;
struct old_linux32_dirent * dirent;
if (buf->count)
return -EINVAL;
buf->count++;
dirent = buf->dirent;
put_user(ino, &dirent->d_ino);
put_user(offset, &dirent->d_offset);
put_user(namlen, &dirent->d_namlen);
copy_to_user(dirent->d_name, name, namlen);
put_user(0, dirent->d_name + namlen);
return 0;
}
asmlinkage long
sys32_oldreaddir (unsigned int fd, void * dirent, unsigned int count)
{
int error;
struct file * file;
struct readdir32_callback buf;
error = -EBADF;
file = fget(fd);
if (!file)
goto out;
buf.count = 0;
buf.dirent = dirent;
error = vfs_readdir(file, fillonedir32, &buf);
if (error >= 0)
error = buf.count;
fput(file);
out:
return error;
}
/*
* We can actually return ERESTARTSYS instead of EINTR, but I'd
* like to be certain this leads to no problems. So I return
* EINTR just for safety.
*
* Update: ERESTARTSYS breaks at least the xview clock binary, so
* I'm trying ERESTARTNOHAND which restart only when you want to.
*/
#define MAX_SELECT_SECONDS \
((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1)
#define ROUND_UP_TIME(x,y) (((x)+(y)-1)/(y))
asmlinkage long
sys32_select(int n, fd_set *inp, fd_set *outp, fd_set *exp, struct timeval32 *tvp32)
{
fd_set_bits fds;
char *bits;
long timeout;
int ret, size;
timeout = MAX_SCHEDULE_TIMEOUT;
if (tvp32) {
time_t sec, usec;
get_user(sec, &tvp32->tv_sec);
get_user(usec, &tvp32->tv_usec);
ret = -EINVAL;
if (sec < 0 || usec < 0)
goto out_nofds;
if ((unsigned long) sec < MAX_SELECT_SECONDS) {
timeout = ROUND_UP_TIME(usec, 1000000/HZ);
timeout += sec * (unsigned long) HZ;
}
}
ret = -EINVAL;
if (n < 0)
goto out_nofds;
size = FDS_BYTES(n);
if (n > current->files->max_fdset)
n = current->files->max_fdset;
/*
* We need 6 bitmaps (in/out/ex for both incoming and outgoing),
* since we used fdset we need to allocate memory in units of
* long-words.
*/
ret = -ENOMEM;
bits = kmalloc(6 * size, GFP_KERNEL);
if (!bits)
goto out_nofds;
fds.in = (unsigned long *) bits;
fds.out = (unsigned long *) (bits + size);
fds.ex = (unsigned long *) (bits + 2*size);
fds.res_in = (unsigned long *) (bits + 3*size);
fds.res_out = (unsigned long *) (bits + 4*size);
fds.res_ex = (unsigned long *) (bits + 5*size);
if ((ret = get_fd_set(n, inp, fds.in)) ||
(ret = get_fd_set(n, outp, fds.out)) ||
(ret = get_fd_set(n, exp, fds.ex)))
goto out;
zero_fd_set(n, fds.res_in);
zero_fd_set(n, fds.res_out);
zero_fd_set(n, fds.res_ex);
ret = do_select(n, &fds, &timeout);
if (tvp32 && !(current->personality & STICKY_TIMEOUTS)) {
time_t sec = 0, usec = 0;
if (timeout) {
sec = timeout / HZ;
usec = timeout % HZ;
usec *= (1000000/HZ);
}
put_user(sec, (int *)&tvp32->tv_sec);
put_user(usec, (int *)&tvp32->tv_usec);
}
if (ret < 0)
goto out;
if (!ret) {
ret = -ERESTARTNOHAND;
if (signal_pending(current))
goto out;
ret = 0;
}
set_fd_set(n, inp, fds.res_in);
set_fd_set(n, outp, fds.res_out);
set_fd_set(n, exp, fds.res_ex);
out:
kfree(bits);
out_nofds:
return ret;
}
struct sel_arg_struct {
unsigned int n;
unsigned int inp;
unsigned int outp;
unsigned int exp;
unsigned int tvp;
};
asmlinkage long
sys32_old_select(struct sel_arg_struct *arg)
{
struct sel_arg_struct a;
if (copy_from_user(&a, arg, sizeof(a)))
return -EFAULT;
return sys32_select(a.n, (fd_set *)A(a.inp), (fd_set *)A(a.outp), (fd_set *)A(a.exp),
(struct timeval32 *)A(a.tvp));
}
extern asmlinkage long sys_nanosleep(struct timespec *rqtp, struct timespec *rmtp);
asmlinkage long
sys32_nanosleep(struct timespec32 *rqtp, struct timespec32 *rmtp)
{
struct timespec t, tout;
int ret;
mm_segment_t old_fs = get_fs ();
if (rqtp) {
if (verify_area(VERIFY_READ, rqtp, sizeof(struct timespec32)) ||
__get_user (t.tv_sec, &rqtp->tv_sec) ||
__get_user (t.tv_nsec, &rqtp->tv_nsec))
return -EFAULT;
}
set_fs (KERNEL_DS);
ret = sys_nanosleep(rqtp ? &t : NULL, rmtp ? &tout : NULL);
set_fs (old_fs);
if (rmtp && ret == -EINTR) {
if (verify_area(VERIFY_WRITE, rmtp, sizeof(struct timespec32)) ||
__put_user (tout.tv_sec, &rmtp->tv_sec) ||
__put_user (tout.tv_nsec, &rmtp->tv_nsec))
return -EFAULT;
}
return ret;
}
asmlinkage ssize_t sys_readv(unsigned long,const struct iovec *,unsigned long);
asmlinkage ssize_t sys_writev(unsigned long,const struct iovec *,unsigned long);
static struct iovec *
get_iovec32(struct iovec32 *iov32, struct iovec *iov_buf, u32 *count, int type, int *errp)
{
int i;
u32 buf, len;
struct iovec *ivp, *iov;
unsigned long totlen;
/* Get the "struct iovec" from user memory */
*errp = 0;
if (!*count)
return 0;
*errp = -EINVAL;
if (*count > UIO_MAXIOV)
return(struct iovec *)0;
*errp = -EFAULT;
if(verify_area(VERIFY_READ, iov32, sizeof(struct iovec32)**count))
return(struct iovec *)0;
if (*count > UIO_FASTIOV) {
*errp = -ENOMEM;
iov = kmalloc(*count*sizeof(struct iovec), GFP_KERNEL);
if (!iov)
return((struct iovec *)0);
} else
iov = iov_buf;
ivp = iov;
totlen = 0;
for (i = 0; i < *count; i++) {
*errp = __get_user(len, &iov32->iov_len) |
__get_user(buf, &iov32->iov_base);
if (*errp)
goto error;
*errp = verify_area(type, (void *)A(buf), len);
if (*errp) {
if (i > 0) {
*count = i;
break;
}
goto error;
}
/* SuS checks: */
*errp = -EINVAL;
if ((int)len < 0)
goto error;
if ((totlen += len) >= 0x7fffffff)
goto error;
ivp->iov_base = (void *)A(buf);
ivp->iov_len = (__kernel_size_t)len;
iov32++;
ivp++;
}
*errp = 0;
return(iov);
error:
if (iov != iov_buf)
kfree(iov);
return NULL;
}
asmlinkage long
sys32_readv(int fd, struct iovec32 *vector, u32 count)
{
struct iovec iovstack[UIO_FASTIOV];
struct iovec *iov;
int ret;
mm_segment_t old_fs = get_fs();
if ((iov = get_iovec32(vector, iovstack, &count, VERIFY_WRITE, &ret)) == NULL)
return ret;
set_fs(KERNEL_DS);
ret = sys_readv(fd, iov, count);
set_fs(old_fs);
if (iov != iovstack)
kfree(iov);
return ret;
}
asmlinkage long
sys32_writev(int fd, struct iovec32 *vector, u32 count)
{
struct iovec iovstack[UIO_FASTIOV];
struct iovec *iov;
int ret;
mm_segment_t old_fs = get_fs();
if ((iov = get_iovec32(vector, iovstack, &count, VERIFY_READ, &ret)) == NULL)
return ret;
set_fs(KERNEL_DS);
ret = sys_writev(fd, iov, count);
set_fs(old_fs);
if (iov != iovstack)
kfree(iov);
return ret;
}
#define RLIM_INFINITY32 0xffffffff
#define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x)
struct rlimit32 {
unsigned rlim_cur;
unsigned rlim_max;
};
extern asmlinkage long sys_getrlimit(unsigned int resource, struct rlimit *rlim);
asmlinkage long
sys32_getrlimit(unsigned int resource, struct rlimit32 *rlim)
{
struct rlimit r;
int ret;
mm_segment_t old_fs;
old_fs = get_fs();
set_fs(KERNEL_DS);
ret = sys_getrlimit(resource, &r);
set_fs(old_fs);
if (!ret) {
if (r.rlim_cur >= 0xffffffff)
r.rlim_cur = RLIM_INFINITY32;
if (r.rlim_max >= 0xffffffff)
r.rlim_max = RLIM_INFINITY32;
if (verify_area(VERIFY_WRITE, rlim, sizeof(struct rlimit32)) ||
__put_user(RESOURCE32(r.rlim_cur), &rlim->rlim_cur) ||
__put_user(RESOURCE32(r.rlim_max), &rlim->rlim_max))
ret = -EFAULT;
}
return ret;
}
extern asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit *rlim);
asmlinkage long
sys32_old_getrlimit(unsigned int resource, struct rlimit32 *rlim)
{
struct rlimit r;
int ret;
mm_segment_t old_fs;
old_fs = get_fs();
set_fs(KERNEL_DS);
ret = sys_getrlimit(resource, &r);
set_fs(old_fs);
if (!ret) {
if (r.rlim_cur >= 0x7fffffff)
r.rlim_cur = RLIM_INFINITY32;
if (r.rlim_max >= 0x7fffffff)
r.rlim_max = RLIM_INFINITY32;
if (verify_area(VERIFY_WRITE, rlim, sizeof(struct rlimit32)) ||
__put_user(r.rlim_cur, &rlim->rlim_cur) ||
__put_user(r.rlim_max, &rlim->rlim_max))
ret = -EFAULT;
}
return ret;
}
extern asmlinkage long sys_setrlimit(unsigned int resource, struct rlimit *rlim);
asmlinkage long
sys32_setrlimit(unsigned int resource, struct rlimit32 *rlim)
{
struct rlimit r;
int ret;
mm_segment_t old_fs = get_fs ();
if (resource >= RLIM_NLIMITS) return -EINVAL;
if (verify_area(VERIFY_READ, rlim, sizeof(struct rlimit32)) ||
__get_user (r.rlim_cur, &rlim->rlim_cur) ||
__get_user (r.rlim_max, &rlim->rlim_max))
return -EFAULT;
if (r.rlim_cur == RLIM_INFINITY32)
r.rlim_cur = RLIM_INFINITY;
if (r.rlim_max == RLIM_INFINITY32)
r.rlim_max = RLIM_INFINITY;
set_fs (KERNEL_DS);
ret = sys_setrlimit(resource, &r);
set_fs (old_fs);
return ret;
}
/*
* sys_time() can be implemented in user-level using
* sys_gettimeofday(). x86-64 did this but i386 Linux did not
* so we have to implement this system call here.
*/
asmlinkage long sys32_time(int * tloc)
{
int i;
/* SMP: This is fairly trivial. We grab CURRENT_TIME and
stuff it to user space. No side effects */
i = CURRENT_TIME;
if (tloc) {
if (put_user(i,tloc))
i = -EFAULT;
}
return i;
}
struct rusage32 {
struct timeval32 ru_utime;
struct timeval32 ru_stime;
int ru_maxrss;
int ru_ixrss;
int ru_idrss;
int ru_isrss;
int ru_minflt;
int ru_majflt;
int ru_nswap;
int ru_inblock;
int ru_oublock;
int ru_msgsnd;
int ru_msgrcv;
int ru_nsignals;
int ru_nvcsw;
int ru_nivcsw;
};
static int
put_rusage (struct rusage32 *ru, struct rusage *r)
{
if (verify_area(VERIFY_WRITE, ru, sizeof(struct rusage32)) ||
__put_user (r->ru_utime.tv_sec, &ru->ru_utime.tv_sec) ||
__put_user (r->ru_utime.tv_usec, &ru->ru_utime.tv_usec) ||
__put_user (r->ru_stime.tv_sec, &ru->ru_stime.tv_sec) ||
__put_user (r->ru_stime.tv_usec, &ru->ru_stime.tv_usec) ||
__put_user (r->ru_maxrss, &ru->ru_maxrss) ||
__put_user (r->ru_ixrss, &ru->ru_ixrss) ||
__put_user (r->ru_idrss, &ru->ru_idrss) ||
__put_user (r->ru_isrss, &ru->ru_isrss) ||
__put_user (r->ru_minflt, &ru->ru_minflt) ||
__put_user (r->ru_majflt, &ru->ru_majflt) ||
__put_user (r->ru_nswap, &ru->ru_nswap) ||
__put_user (r->ru_inblock, &ru->ru_inblock) ||
__put_user (r->ru_oublock, &ru->ru_oublock) ||
__put_user (r->ru_msgsnd, &ru->ru_msgsnd) ||
__put_user (r->ru_msgrcv, &ru->ru_msgrcv) ||
__put_user (r->ru_nsignals, &ru->ru_nsignals) ||
__put_user (r->ru_nvcsw, &ru->ru_nvcsw) ||
__put_user (r->ru_nivcsw, &ru->ru_nivcsw))
return -EFAULT;
return 0;
}
extern asmlinkage long sys_wait4(pid_t pid,unsigned int * stat_addr,
int options, struct rusage * ru);
asmlinkage long
sys32_wait4(__kernel_pid_t32 pid, unsigned int *stat_addr, int options,
struct rusage32 *ru)
{
if (!ru)
return sys_wait4(pid, stat_addr, options, NULL);
else {
struct rusage r;
int ret;
unsigned int status;
mm_segment_t old_fs = get_fs();
set_fs (KERNEL_DS);
ret = sys_wait4(pid, stat_addr ? &status : NULL, options, &r);
set_fs (old_fs);
if (put_rusage (ru, &r)) return -EFAULT;
if (stat_addr && put_user (status, stat_addr))
return -EFAULT;
return ret;
}
}
asmlinkage long
sys32_waitpid(__kernel_pid_t32 pid, unsigned int *stat_addr, int options)
{
return sys32_wait4(pid, stat_addr, options, NULL);
}
extern asmlinkage long
sys_getrusage(int who, struct rusage *ru);
asmlinkage long
sys32_getrusage(int who, struct rusage32 *ru)
{
struct rusage r;
int ret;
mm_segment_t old_fs = get_fs();
set_fs (KERNEL_DS);
ret = sys_getrusage(who, &r);
set_fs (old_fs);
if (put_rusage (ru, &r)) return -EFAULT;
return ret;
}
struct tms32 {
__kernel_clock_t32 tms_utime;
__kernel_clock_t32 tms_stime;
__kernel_clock_t32 tms_cutime;
__kernel_clock_t32 tms_cstime;
};
extern int sys_times(struct tms *);
asmlinkage long
sys32_times(struct tms32 *tbuf)
{
struct tms t;
long ret;
mm_segment_t old_fs = get_fs ();
set_fs (KERNEL_DS);
ret = sys_times(tbuf ? &t : NULL);
set_fs (old_fs);
if (tbuf) {
if (verify_area(VERIFY_WRITE, tbuf, sizeof(struct tms32)) ||
__put_user (t.tms_utime, &tbuf->tms_utime) ||
__put_user (t.tms_stime, &tbuf->tms_stime) ||
__put_user (t.tms_cutime, &tbuf->tms_cutime) ||
__put_user (t.tms_cstime, &tbuf->tms_cstime))
return -EFAULT;
}
return ret;
}
static inline int get_flock(struct flock *kfl, struct flock32 *ufl)
{
int err;
err = get_user(kfl->l_type, &ufl->l_type);
err |= __get_user(kfl->l_whence, &ufl->l_whence);
err |= __get_user(kfl->l_start, &ufl->l_start);
err |= __get_user(kfl->l_len, &ufl->l_len);
err |= __get_user(kfl->l_pid, &ufl->l_pid);
return err;
}
static inline int put_flock(struct flock *kfl, struct flock32 *ufl)
{
int err;
err = __put_user(kfl->l_type, &ufl->l_type);
err |= __put_user(kfl->l_whence, &ufl->l_whence);
err |= __put_user(kfl->l_start, &ufl->l_start);
err |= __put_user(kfl->l_len, &ufl->l_len);
err |= __put_user(kfl->l_pid, &ufl->l_pid);
return err;
}
extern asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg);
asmlinkage long sys32_fcntl64(unsigned int fd, unsigned int cmd, unsigned long arg);
asmlinkage long sys32_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg)
{
switch (cmd) {
case F_GETLK:
case F_SETLK:
case F_SETLKW:
{
struct flock f;
mm_segment_t old_fs;
long ret;
if (get_flock(&f, (struct flock32 *)arg))
return -EFAULT;
old_fs = get_fs(); set_fs (KERNEL_DS);
ret = sys_fcntl(fd, cmd, (unsigned long)&f);
set_fs (old_fs);
if (ret) return ret;
if (put_flock(&f, (struct flock32 *)arg))
return -EFAULT;
return 0;
}
case F_GETLK64:
case F_SETLK64:
case F_SETLKW64:
return sys32_fcntl64(fd,cmd,arg);
default:
return sys_fcntl(fd, cmd, (unsigned long)arg);
}
}
static inline int get_flock64(struct ia32_flock64 *fl32, struct flock *fl64)
{
if (access_ok(fl32, sizeof(struct ia32_flock64), VERIFY_WRITE)) {
int ret = __get_user(fl64->l_type, &fl32->l_type);
ret |= __get_user(fl64->l_whence, &fl32->l_whence);
ret |= __get_user(fl64->l_start, &fl32->l_start);
ret |= __get_user(fl64->l_len, &fl32->l_len);
ret |= __get_user(fl64->l_pid, &fl32->l_pid);
return ret;
}
return -EFAULT;
}
static inline int put_flock64(struct ia32_flock64 *fl32, struct flock *fl64)
{
if (access_ok(fl32, sizeof(struct ia32_flock64), VERIFY_WRITE)) {
int ret = __put_user(fl64->l_type, &fl32->l_type);
ret |= __put_user(fl64->l_whence, &fl32->l_whence);
ret |= __put_user(fl64->l_start, &fl32->l_start);
ret |= __put_user(fl64->l_len, &fl32->l_len);
ret |= __put_user(fl64->l_pid, &fl32->l_pid);
return ret;
}
return -EFAULT;
}
asmlinkage long sys32_fcntl64(unsigned int fd, unsigned int cmd, unsigned long arg)
{
struct flock fl64;
mm_segment_t oldfs = get_fs();
int ret = 0;
int oldcmd = cmd;
unsigned long oldarg = arg;
switch (cmd) {
case F_GETLK64:
cmd = F_GETLK;
goto cnv;
case F_SETLK64:
cmd = F_SETLK;
goto cnv;
case F_SETLKW64:
cmd = F_SETLKW;
cnv:
ret = get_flock64((struct ia32_flock64 *)arg, &fl64);
arg = (unsigned long)&fl64;
set_fs(KERNEL_DS);
break;
case F_GETLK:
case F_SETLK:
case F_SETLKW:
return sys32_fcntl(fd,cmd,arg);
}
if (!ret)
ret = sys_fcntl(fd, cmd, arg);
set_fs(oldfs);
if (oldcmd == F_GETLK64 && !ret)
ret = put_flock64((struct ia32_flock64 *)oldarg, &fl64);
return ret;
}
asmlinkage long sys32_ni_syscall(int call)
{
/* Disable for now because the emulation should be pretty complete
and we miss some syscalls from 2.6. */
#if 0
printk(KERN_INFO "IA32 syscall %d from %s not implemented\n", call,
current->comm);
#endif
return -ENOSYS;
}
/* 32-bit timeval and related flotsam. */
extern asmlinkage long sys_utime(char * filename, struct utimbuf * times);
struct utimbuf32 {
__kernel_time_t32 actime, modtime;
};
asmlinkage long
sys32_utime(char * filename, struct utimbuf32 *times)
{
struct utimbuf t;
mm_segment_t old_fs;
int ret;
char *filenam;
if (!times)
return sys_utime(filename, NULL);
if (verify_area(VERIFY_READ, times, sizeof(struct utimbuf32)) ||
__get_user (t.actime, ×->actime) ||
__get_user (t.modtime, ×->modtime))
return -EFAULT;
filenam = getname (filename);
ret = PTR_ERR(filenam);
if (!IS_ERR(filenam)) {
old_fs = get_fs();
set_fs (KERNEL_DS);
ret = sys_utime(filenam, &t);
set_fs (old_fs);
putname(filenam);
}
return ret;
}
extern asmlinkage long sys_sysfs(int option, unsigned long arg1,
unsigned long arg2);
asmlinkage long
sys32_sysfs(int option, u32 arg1, u32 arg2)
{
return sys_sysfs(option, arg1, arg2);
}
extern asmlinkage long sys_mount(char * dev_name, char * dir_name, char * type,
unsigned long new_flags, void *data);
static char *badfs[] = {
"smbfs", "ncpfs", NULL
};
static int checktype(char *user_type)
{
int err = 0;
char **s,*kernel_type = getname(user_type);
if (!kernel_type || IS_ERR(kernel_type))
return -EFAULT;
for (s = badfs; *s; ++s)
if (!strcmp(kernel_type, *s)) {
printk(KERN_ERR "mount32: unsupported fs `%s' -- use 64bit mount\n", *s);
err = -EINVAL;
break;
}
putname(user_type);
return err;
}
asmlinkage long
sys32_mount(char *dev_name, char *dir_name, char *type,
unsigned long new_flags, u32 data)
{
int err;
if(!capable(CAP_SYS_ADMIN))
return -EPERM;
err = checktype(type);
if (err)
return err;
return sys_mount(dev_name, dir_name, type, new_flags, (void *)AA(data));
}
struct sysinfo32 {
s32 uptime;
u32 loads[3];
u32 totalram;
u32 freeram;
u32 sharedram;
u32 bufferram;
u32 totalswap;
u32 freeswap;
unsigned short procs;
unsigned short pad;
u32 totalhigh;
u32 freehigh;
u32 mem_unit;
char _f[20-2*sizeof(u32)-sizeof(int)];
};
extern asmlinkage long sys_sysinfo(struct sysinfo *info);
asmlinkage long
sys32_sysinfo(struct sysinfo32 *info)
{
struct sysinfo s;
int ret;
mm_segment_t old_fs = get_fs ();
int bitcount = 0;
set_fs (KERNEL_DS);
ret = sys_sysinfo(&s);
set_fs (old_fs);
/* Check to see if any memory value is too large for 32-bit and scale
* down if needed
*/
if ((s.totalram >> 32) || (s.totalswap >> 32)) {
while (s.mem_unit < PAGE_SIZE) {
s.mem_unit <<= 1;
bitcount++;
}
s.totalram >>= bitcount;
s.freeram >>= bitcount;
s.sharedram >>= bitcount;
s.bufferram >>= bitcount;
s.totalswap >>= bitcount;
s.freeswap >>= bitcount;
s.totalhigh >>= bitcount;
s.freehigh >>= bitcount;
}
if (verify_area(VERIFY_WRITE, info, sizeof(struct sysinfo32)) ||
__put_user (s.uptime, &info->uptime) ||
__put_user (s.loads[0], &info->loads[0]) ||
__put_user (s.loads[1], &info->loads[1]) ||
__put_user (s.loads[2], &info->loads[2]) ||
__put_user (s.totalram, &info->totalram) ||
__put_user (s.freeram, &info->freeram) ||
__put_user (s.sharedram, &info->sharedram) ||
__put_user (s.bufferram, &info->bufferram) ||
__put_user (s.totalswap, &info->totalswap) ||
__put_user (s.freeswap, &info->freeswap) ||
__put_user (s.procs, &info->procs) ||
__put_user (s.totalhigh, &info->totalhigh) ||
__put_user (s.freehigh, &info->freehigh) ||
__put_user (s.mem_unit, &info->mem_unit))
return -EFAULT;
return 0;
}
extern asmlinkage long sys_sched_rr_get_interval(pid_t pid,
struct timespec *interval);
asmlinkage long
sys32_sched_rr_get_interval(__kernel_pid_t32 pid, struct timespec32 *interval)
{
struct timespec t;
int ret;
mm_segment_t old_fs = get_fs ();
set_fs (KERNEL_DS);
ret = sys_sched_rr_get_interval(pid, &t);
set_fs (old_fs);
if (verify_area(VERIFY_WRITE, interval, sizeof(struct timespec32)) ||
__put_user (t.tv_sec, &interval->tv_sec) ||
__put_user (t.tv_nsec, &interval->tv_nsec))
return -EFAULT;
return ret;
}
extern asmlinkage long sys_sigprocmask(int how, old_sigset_t *set,
old_sigset_t *oset);
asmlinkage long
sys32_sigprocmask(int how, old_sigset32_t *set, old_sigset32_t *oset)
{
old_sigset_t s;
int ret;
mm_segment_t old_fs = get_fs();
if (set && get_user (s, set)) return -EFAULT;
set_fs (KERNEL_DS);
ret = sys_sigprocmask(how, set ? &s : NULL, oset ? &s : NULL);
set_fs (old_fs);
if (ret) return ret;
if (oset && put_user (s, oset)) return -EFAULT;
return 0;
}
extern asmlinkage long sys_sigpending(old_sigset_t *set);
asmlinkage long
sys32_sigpending(old_sigset32_t *set)
{
old_sigset_t s;
int ret;
mm_segment_t old_fs = get_fs();
set_fs (KERNEL_DS);
ret = sys_sigpending(&s);
set_fs (old_fs);
if (put_user (s, set)) return -EFAULT;
return ret;
}
extern asmlinkage long sys_rt_sigpending(sigset_t *set, size_t sigsetsize);
asmlinkage long
sys32_rt_sigpending(sigset32_t *set, __kernel_size_t32 sigsetsize)
{
sigset_t s;
sigset32_t s32;
int ret;
mm_segment_t old_fs = get_fs();
set_fs (KERNEL_DS);
ret = sys_rt_sigpending(&s, sigsetsize);
set_fs (old_fs);
if (!ret) {
switch (_NSIG_WORDS) {
case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
}
if (copy_to_user (set, &s32, sizeof(sigset32_t)))
return -EFAULT;
}
return ret;
}
siginfo_t32 *
siginfo64to32(siginfo_t32 *d, siginfo_t *s)
{
memset (d, 0, sizeof(siginfo_t32));
d->si_signo = s->si_signo;
d->si_errno = s->si_errno;
d->si_code = s->si_code;
if (s->si_signo >= SIGRTMIN) {
d->si_pid = s->si_pid;
d->si_uid = s->si_uid;
memcpy(&d->si_int, &s->si_int,
sizeof(siginfo_t) - offsetof(siginfo_t,si_int));
} else switch (s->si_signo) {
/* XXX: What about POSIX1.b timers */
case SIGCHLD:
d->si_pid = s->si_pid;
d->si_status = s->si_status;
d->si_utime = s->si_utime;
d->si_stime = s->si_stime;
break;
case SIGSEGV:
case SIGBUS:
case SIGFPE:
case SIGILL:
d->si_addr = (long)(s->si_addr);
// d->si_trapno = s->si_trapno;
break;
case SIGPOLL:
d->si_band = s->si_band;
d->si_fd = s->si_fd;
break;
default:
d->si_pid = s->si_pid;
d->si_uid = s->si_uid;
break;
}
return d;
}
siginfo_t *
siginfo32to64(siginfo_t *d, siginfo_t32 *s)
{
d->si_signo = s->si_signo;
d->si_errno = s->si_errno;
d->si_code = s->si_code;
if (s->si_signo >= SIGRTMIN) {
d->si_pid = s->si_pid;
d->si_uid = s->si_uid;
memcpy(&d->si_int,
&s->si_int,
sizeof(siginfo_t) - offsetof(siginfo_t, si_int));
} else switch (s->si_signo) {
/* XXX: What about POSIX1.b timers */
case SIGCHLD:
d->si_pid = s->si_pid;
d->si_status = s->si_status;
d->si_utime = s->si_utime;
d->si_stime = s->si_stime;
break;
case SIGSEGV:
case SIGBUS:
case SIGFPE:
case SIGILL:
d->si_addr = (void *)A(s->si_addr);
// d->si_trapno = s->si_trapno;
break;
case SIGPOLL:
d->si_band = s->si_band;
d->si_fd = s->si_fd;
break;
default:
d->si_pid = s->si_pid;
d->si_uid = s->si_uid;
break;
}
return d;
}
extern asmlinkage long
sys_rt_sigtimedwait(const sigset_t *uthese, siginfo_t *uinfo,
const struct timespec *uts, size_t sigsetsize);
asmlinkage long
sys32_rt_sigtimedwait(sigset32_t *uthese, siginfo_t32 *uinfo,
struct timespec32 *uts, __kernel_size_t32 sigsetsize)
{
sigset_t s;
sigset32_t s32;
struct timespec t;
int ret;
mm_segment_t old_fs = get_fs();
siginfo_t info;
siginfo_t32 info32;
if (copy_from_user (&s32, uthese, sizeof(sigset32_t)))
return -EFAULT;
switch (_NSIG_WORDS) {
case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
}
if (uts) {
if (verify_area(VERIFY_READ, uts, sizeof(struct timespec32)) ||
__get_user (t.tv_sec, &uts->tv_sec) ||
__get_user (t.tv_nsec, &uts->tv_nsec))
return -EFAULT;
}
set_fs (KERNEL_DS);
ret = sys_rt_sigtimedwait(&s, &info, uts ? &t : NULL, sigsetsize);
set_fs (old_fs);
if (ret >= 0 && uinfo) {
if (copy_to_user (uinfo, siginfo64to32(&info32, &info),
sizeof(siginfo_t32)))
return -EFAULT;
}
return ret;
}
extern asmlinkage long
sys_rt_sigqueueinfo(int pid, int sig, siginfo_t *uinfo);
asmlinkage long
sys32_rt_sigqueueinfo(int pid, int sig, siginfo_t32 *uinfo)
{
siginfo_t info;
siginfo_t32 info32;
int ret;
mm_segment_t old_fs = get_fs();
if (copy_from_user (&info32, uinfo, sizeof(siginfo_t32)))
return -EFAULT;
/* XXX: Is this correct? */
siginfo32to64(&info, &info32);
set_fs (KERNEL_DS);
ret = sys_rt_sigqueueinfo(pid, sig, &info);
set_fs (old_fs);
return ret;
}
extern void check_pending(int signum);
asmlinkage long sys_utimes(char *, struct timeval *);
asmlinkage long
sys32_utimes(char *filename, struct timeval32 *tvs)
{
char *kfilename;
struct timeval ktvs[2];
mm_segment_t old_fs;
int ret;
kfilename = getname(filename);
ret = PTR_ERR(kfilename);
if (!IS_ERR(kfilename)) {
if (tvs) {
if (get_tv32(&ktvs[0], tvs) ||
get_tv32(&ktvs[1], 1+tvs))
return -EFAULT;
}
old_fs = get_fs();
set_fs(KERNEL_DS);
ret = sys_utimes(kfilename, &ktvs[0]);
set_fs(old_fs);
putname(kfilename);
}
return ret;
}
/* These are here just in case some old ia32 binary calls it. */
asmlinkage long
sys32_pause(void)
{
current->state = TASK_INTERRUPTIBLE;
schedule();
return -ERESTARTNOHAND;
}
struct sysctl_ia32 {
unsigned int name;
int nlen;
unsigned int oldval;
unsigned int oldlenp;
unsigned int newval;
unsigned int newlen;
unsigned int __unused[4];
};
asmlinkage long
sys32_sysctl(struct sysctl_ia32 *args32)
{
#ifndef CONFIG_SYSCTL
return -ENOSYS;
#else
struct sysctl_ia32 a32;
mm_segment_t old_fs = get_fs ();
void *oldvalp, *newvalp;
size_t oldlen;
int *namep;
long ret;
extern int do_sysctl(int *name, int nlen, void *oldval, size_t *oldlenp,
void *newval, size_t newlen);
if (copy_from_user(&a32, args32, sizeof (a32)))
return -EFAULT;
/*
* We need to pre-validate these because we have to disable address checking
* before calling do_sysctl() because of OLDLEN but we can't run the risk of the
* user specifying bad addresses here. Well, since we're dealing with 32 bit
* addresses, we KNOW that access_ok() will always succeed, so this is an
* expensive NOP, but so what...
*/
namep = (int *) A(a32.name);
oldvalp = (void *) A(a32.oldval);
newvalp = (void *) A(a32.newval);
if ((oldvalp && get_user(oldlen, (int *) A(a32.oldlenp)))
|| !access_ok(VERIFY_WRITE, namep, 0)
|| !access_ok(VERIFY_WRITE, oldvalp, 0)
|| !access_ok(VERIFY_WRITE, newvalp, 0))
return -EFAULT;
set_fs(KERNEL_DS);
lock_kernel();
ret = do_sysctl(namep, a32.nlen, oldvalp, &oldlen, newvalp, (size_t) a32.newlen);
unlock_kernel();
set_fs(old_fs);
if (oldvalp && put_user (oldlen, (int *) A(a32.oldlenp)))
return -EFAULT;
return ret;
#endif
}
extern asmlinkage ssize_t sys_pread(unsigned int fd, char * buf,
size_t count, loff_t pos);
extern asmlinkage ssize_t sys_pwrite(unsigned int fd, const char * buf,
size_t count, loff_t pos);
typedef __kernel_ssize_t32 ssize_t32;
/* warning: next two assume little endian */
asmlinkage long
sys32_pread(unsigned int fd, char *ubuf, __kernel_size_t32 count,
u32 poslo, u32 poshi)
{
return sys_pread(fd, ubuf, count,
((loff_t)AA(poshi) << 32) | AA(poslo));
}
asmlinkage long
sys32_pwrite(unsigned int fd, char *ubuf, __kernel_size_t32 count,
u32 poslo, u32 poshi)
{
return sys_pwrite(fd, ubuf, count,
((loff_t)AA(poshi) << 32) | AA(poslo));
}
extern asmlinkage long sys_personality(unsigned long);
asmlinkage long
sys32_personality(unsigned long personality)
{
int ret;
if (personality(current->personality) == PER_LINUX32 &&
personality == PER_LINUX)
personality = PER_LINUX32;
ret = sys_personality(personality);
if (ret == PER_LINUX32)
ret = PER_LINUX;
return ret;
}
extern asmlinkage ssize_t sys_sendfile(int out_fd, int in_fd, off_t *offset,
size_t count);
asmlinkage long
sys32_sendfile(int out_fd, int in_fd, __kernel_off_t32 *offset, s32 count)
{
mm_segment_t old_fs = get_fs();
int ret;
off_t of;
if (offset && get_user(of, offset))
return -EFAULT;
set_fs(KERNEL_DS);
ret = sys_sendfile(out_fd, in_fd, offset ? &of : NULL, count);
set_fs(old_fs);
if (!ret && offset && put_user(of, offset))
return -EFAULT;
return ret;
}
extern long sys_modify_ldt(int,void*,unsigned long);
asmlinkage long sys32_modify_ldt(int func, void *ptr, unsigned long bytecount)
{
long ret;
if (func == 0x1 || func == 0x11) {
struct modify_ldt_ldt_s info;
mm_segment_t old_fs = get_fs();
if (bytecount != sizeof(struct modify_ldt_ldt_s))
return -EINVAL;
if (copy_from_user(&info, ptr, sizeof(struct modify_ldt_ldt_s)))
return -EFAULT;
/* lm bit was undefined in the 32bit ABI and programs
give it random values. Force it to zero here. */
info.lm = 0;
set_fs(KERNEL_DS);
ret = sys_modify_ldt(func, &info, bytecount);
set_fs(old_fs);
} else {
ret = sys_modify_ldt(func, ptr, bytecount);
}
return ret;
}
/* Handle adjtimex compatability. */
struct timex32 {
u32 modes;
s32 offset, freq, maxerror, esterror;
s32 status, constant, precision, tolerance;
struct timeval32 time;
s32 tick;
s32 ppsfreq, jitter, shift, stabil;
s32 jitcnt, calcnt, errcnt, stbcnt;
s32 :32; s32 :32; s32 :32; s32 :32;
s32 :32; s32 :32; s32 :32; s32 :32;
s32 :32; s32 :32; s32 :32; s32 :32;
};
extern int do_adjtimex(struct timex *);
asmlinkage long
sys32_adjtimex(struct timex32 *utp)
{
struct timex txc;
int ret;
memset(&txc, 0, sizeof(struct timex));
if(verify_area(VERIFY_READ, utp, sizeof(struct timex32)) ||
__get_user(txc.modes, &utp->modes) ||
__get_user(txc.offset, &utp->offset) ||
__get_user(txc.freq, &utp->freq) ||
__get_user(txc.maxerror, &utp->maxerror) ||
__get_user(txc.esterror, &utp->esterror) ||
__get_user(txc.status, &utp->status) ||
__get_user(txc.constant, &utp->constant) ||
__get_user(txc.precision, &utp->precision) ||
__get_user(txc.tolerance, &utp->tolerance) ||
__get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
__get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
__get_user(txc.tick, &utp->tick) ||
__get_user(txc.ppsfreq, &utp->ppsfreq) ||
__get_user(txc.jitter, &utp->jitter) ||
__get_user(txc.shift, &utp->shift) ||
__get_user(txc.stabil, &utp->stabil) ||
__get_user(txc.jitcnt, &utp->jitcnt) ||
__get_user(txc.calcnt, &utp->calcnt) ||
__get_user(txc.errcnt, &utp->errcnt) ||
__get_user(txc.stbcnt, &utp->stbcnt))
return -EFAULT;
ret = do_adjtimex(&txc);
if(verify_area(VERIFY_WRITE, utp, sizeof(struct timex32)) ||
__put_user(txc.modes, &utp->modes) ||
__put_user(txc.offset, &utp->offset) ||
__put_user(txc.freq, &utp->freq) ||
__put_user(txc.maxerror, &utp->maxerror) ||
__put_user(txc.esterror, &utp->esterror) ||
__put_user(txc.status, &utp->status) ||
__put_user(txc.constant, &utp->constant) ||
__put_user(txc.precision, &utp->precision) ||
__put_user(txc.tolerance, &utp->tolerance) ||
__put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
__put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
__put_user(txc.tick, &utp->tick) ||
__put_user(txc.ppsfreq, &utp->ppsfreq) ||
__put_user(txc.jitter, &utp->jitter) ||
__put_user(txc.shift, &utp->shift) ||
__put_user(txc.stabil, &utp->stabil) ||
__put_user(txc.jitcnt, &utp->jitcnt) ||
__put_user(txc.calcnt, &utp->calcnt) ||
__put_user(txc.errcnt, &utp->errcnt) ||
__put_user(txc.stbcnt, &utp->stbcnt))
ret = -EFAULT;
return ret;
}
asmlinkage long sys32_mmap2(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long pgoff)
{
struct mm_struct *mm = current->mm;
unsigned long error;
struct file * file = NULL;
flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
if (!(flags & MAP_ANONYMOUS)) {
file = fget(fd);
if (!file)
return -EBADF;
}
if (prot & PROT_READ)
prot |= PROT_EXEC;
down_write(&mm->mmap_sem);
error = do_mmap_pgoff(file, addr, len, prot, flags|MAP_32BIT, pgoff);
up_write(&mm->mmap_sem);
if (file)
fput(file);
return error;
}
asmlinkage long sys32_olduname(struct oldold_utsname * name)
{
int error;
if (!name)
return -EFAULT;
if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname)))
return -EFAULT;
down_read(&uts_sem);
error = __copy_to_user(&name->sysname,&system_utsname.sysname,__OLD_UTS_LEN);
__put_user(0,name->sysname+__OLD_UTS_LEN);
__copy_to_user(&name->nodename,&system_utsname.nodename,__OLD_UTS_LEN);
__put_user(0,name->nodename+__OLD_UTS_LEN);
__copy_to_user(&name->release,&system_utsname.release,__OLD_UTS_LEN);
__put_user(0,name->release+__OLD_UTS_LEN);
__copy_to_user(&name->version,&system_utsname.version,__OLD_UTS_LEN);
__put_user(0,name->version+__OLD_UTS_LEN);
{
char *arch = (personality(current->personality) == PER_LINUX32)
? "i686" : "x86_64";
__copy_to_user(&name->machine,arch,strlen(arch)+1);
}
up_read(&uts_sem);
error = error ? -EFAULT : 0;
return error;
}
asmlinkage long sys32_uname(struct old_utsname * name)
{
int err;
down_read(&uts_sem);
err=copy_to_user(name, &system_utsname, sizeof (*name));
up_read(&uts_sem);
if (personality(current->personality) == PER_LINUX32)
err = copy_to_user(name->machine, "i686", 5);
return err?-EFAULT:0;
}
extern int sys_ustat(dev_t, struct ustat *);
asmlinkage long sys32_ustat(dev_t dev, struct ustat32 *u32p)
{
struct ustat u;
mm_segment_t seg;
int ret;
seg = get_fs();
set_fs(KERNEL_DS);
ret = sys_ustat(dev,&u);
set_fs(seg);
if (ret >= 0) {
if (!access_ok(VERIFY_WRITE,u32p,sizeof(struct ustat32)) ||
__put_user((__u32) u.f_tfree, &u32p->f_tfree) ||
__put_user((__u32) u.f_tinode, &u32p->f_tfree) ||
__copy_to_user(&u32p->f_fname, u.f_fname, sizeof(u.f_fname)) ||
__copy_to_user(&u32p->f_fpack, u.f_fpack, sizeof(u.f_fpack)))
ret = -EFAULT;
}
return ret;
}
static int nargs(u32 src, char **dst)
{
int cnt;
u32 val;
cnt = 0;
do {
int ret = get_user(val, (__u32 *)(u64)src);
if (ret)
return ret;
if (dst)
dst[cnt] = (char *)(u64)val;
cnt++;
src += 4;
if (cnt >= (MAX_ARG_PAGES * PAGE_SIZE) / sizeof(char *))
return -E2BIG;
} while(val);
if (dst)
dst[cnt-1] = 0;
return cnt;
}
asmlinkage long sys32_execve(char *name, u32 argv, u32 envp, struct pt_regs regs)
{
mm_segment_t oldseg;
char **buf = NULL;
int na = 0,ne = 0;
int ret;
unsigned sz = 0;
if (argv) {
na = nargs(argv, NULL);
if (na < 0)
return -EFAULT;
}
if (envp) {
ne = nargs(envp, NULL);
if (ne < 0)
return -EFAULT;
}
if (argv || envp) {
sz = (na+ne)*sizeof(void *);
if (sz > PAGE_SIZE)
buf = vmalloc(sz);
else
buf = kmalloc(sz, GFP_KERNEL);
if (!buf)
return -ENOMEM;
}
if (argv) {
ret = nargs(argv, buf);
if (ret < 0)
goto free;
}
if (envp) {
ret = nargs(envp, buf + na);
if (ret < 0)
goto free;
}
name = getname(name);
ret = PTR_ERR(name);
if (IS_ERR(name))
goto free;
oldseg = get_fs();
set_fs(KERNEL_DS);
ret = do_execve(name, argv ? buf : NULL, envp ? buf+na : NULL, ®s);
set_fs(oldseg);
if (ret == 0)
current->ptrace &= ~PT_DTRACE;
putname(name);
free:
if (argv || envp) {
if (sz > PAGE_SIZE)
vfree(buf);
else
kfree(buf);
}
return ret;
}
asmlinkage long sys32_fork(struct pt_regs regs)
{
return do_fork(SIGCHLD, regs.rsp, ®s, 0);
}
asmlinkage long sys32_clone(unsigned int clone_flags, unsigned int newsp, struct pt_regs regs)
{
if (!newsp)
newsp = regs.rsp;
return do_fork(clone_flags, newsp, ®s, 0);
}
/*
* This is trivial, and on the face of it looks like it
* could equally well be done in user mode.
*
* Not so, for quite unobvious reasons - register pressure.
* In user mode vfork() cannot have a stack frame, and if
* done by calling the "clone()" system call directly, you
* do not have enough call-clobbered registers to hold all
* the information you need.
*/
asmlinkage long sys32_vfork(struct pt_regs regs)
{
return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, regs.rsp, ®s, 0);
}
/*
* Some system calls that need sign extended arguments. This could be done by a generic wrapper.
*/
extern off_t sys_lseek (unsigned int fd, off_t offset, unsigned int origin);
asmlinkage long sys32_lseek (unsigned int fd, int offset, unsigned int whence)
{
return sys_lseek(fd, offset, whence);
}
extern int sys_kill(pid_t pid, int sig);
asmlinkage long sys32_kill(int pid, int sig)
{
return sys_kill(pid, sig);
}
#if defined(CONFIG_NFSD) || defined(CONFIG_NFSD_MODULE)
/* Stuff for NFS server syscalls... */
struct nfsctl_svc32 {
u16 svc32_port;
s32 svc32_nthreads;
};
struct nfsctl_client32 {
s8 cl32_ident[NFSCLNT_IDMAX+1];
s32 cl32_naddr;
struct in_addr cl32_addrlist[NFSCLNT_ADDRMAX];
s32 cl32_fhkeytype;
s32 cl32_fhkeylen;
u8 cl32_fhkey[NFSCLNT_KEYMAX];
};
struct nfsctl_export32 {
s8 ex32_client[NFSCLNT_IDMAX+1];
s8 ex32_path[NFS_MAXPATHLEN+1];
__kernel_dev_t32 ex32_dev;
__kernel_ino_t32 ex32_ino;
s32 ex32_flags;
__kernel_uid_t32 ex32_anon_uid;
__kernel_gid_t32 ex32_anon_gid;
};
struct nfsctl_uidmap32 {
u32 ug32_ident; /* char * */
__kernel_uid_t32 ug32_uidbase;
s32 ug32_uidlen;
u32 ug32_udimap; /* uid_t * */
__kernel_uid_t32 ug32_gidbase;
s32 ug32_gidlen;
u32 ug32_gdimap; /* gid_t * */
};
struct nfsctl_fhparm32 {
struct sockaddr gf32_addr;
__kernel_dev_t32 gf32_dev;
__kernel_ino_t32 gf32_ino;
s32 gf32_version;
};
struct nfsctl_fdparm32 {
struct sockaddr gd32_addr;
s8 gd32_path[NFS_MAXPATHLEN+1];
s32 gd32_version;
};
struct nfsctl_fsparm32 {
struct sockaddr gd32_addr;
s8 gd32_path[NFS_MAXPATHLEN+1];
s32 gd32_maxlen;
};
struct nfsctl_arg32 {
s32 ca32_version; /* safeguard */
union {
struct nfsctl_svc32 u32_svc;
struct nfsctl_client32 u32_client;
struct nfsctl_export32 u32_export;
struct nfsctl_uidmap32 u32_umap;
struct nfsctl_fhparm32 u32_getfh;
struct nfsctl_fdparm32 u32_getfd;
struct nfsctl_fsparm32 u32_getfs;
} u;
#define ca32_svc u.u32_svc
#define ca32_client u.u32_client
#define ca32_export u.u32_export
#define ca32_umap u.u32_umap
#define ca32_getfh u.u32_getfh
#define ca32_getfd u.u32_getfd
#define ca32_getfs u.u32_getfs
#define ca32_authd u.u32_authd
};
union nfsctl_res32 {
__u8 cr32_getfh[NFS_FHSIZE];
struct knfsd_fh cr32_getfs;
};
static int nfs_svc32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
{
int err;
err = get_user(karg->ca_version, &arg32->ca32_version);
err |= __get_user(karg->ca_svc.svc_port, &arg32->ca32_svc.svc32_port);
err |= __get_user(karg->ca_svc.svc_nthreads, &arg32->ca32_svc.svc32_nthreads);
return err;
}
static int nfs_clnt32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
{
int err;
err = get_user(karg->ca_version, &arg32->ca32_version);
err |= copy_from_user(&karg->ca_client.cl_ident[0],
&arg32->ca32_client.cl32_ident[0],
NFSCLNT_IDMAX);
err |= __get_user(karg->ca_client.cl_naddr, &arg32->ca32_client.cl32_naddr);
err |= copy_from_user(&karg->ca_client.cl_addrlist[0],
&arg32->ca32_client.cl32_addrlist[0],
(sizeof(struct in_addr) * NFSCLNT_ADDRMAX));
err |= __get_user(karg->ca_client.cl_fhkeytype,
&arg32->ca32_client.cl32_fhkeytype);
err |= __get_user(karg->ca_client.cl_fhkeylen,
&arg32->ca32_client.cl32_fhkeylen);
err |= copy_from_user(&karg->ca_client.cl_fhkey[0],
&arg32->ca32_client.cl32_fhkey[0],
NFSCLNT_KEYMAX);
return err;
}
static int nfs_exp32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
{
int err;
err = get_user(karg->ca_version, &arg32->ca32_version);
err |= copy_from_user(&karg->ca_export.ex_client[0],
&arg32->ca32_export.ex32_client[0],
NFSCLNT_IDMAX);
err |= copy_from_user(&karg->ca_export.ex_path[0],
&arg32->ca32_export.ex32_path[0],
NFS_MAXPATHLEN);
err |= __get_user(karg->ca_export.ex_dev,
&arg32->ca32_export.ex32_dev);
err |= __get_user(karg->ca_export.ex_ino,
&arg32->ca32_export.ex32_ino);
err |= __get_user(karg->ca_export.ex_flags,
&arg32->ca32_export.ex32_flags);
err |= __get_user(karg->ca_export.ex_anon_uid,
&arg32->ca32_export.ex32_anon_uid);
err |= __get_user(karg->ca_export.ex_anon_gid,
&arg32->ca32_export.ex32_anon_gid);
karg->ca_export.ex_anon_uid = high2lowuid(karg->ca_export.ex_anon_uid);
karg->ca_export.ex_anon_gid = high2lowgid(karg->ca_export.ex_anon_gid);
return err;
}
static int nfs_getfh32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
{
int err;
err = get_user(karg->ca_version, &arg32->ca32_version);
err |= copy_from_user(&karg->ca_getfh.gf_addr,
&arg32->ca32_getfh.gf32_addr,
(sizeof(struct sockaddr)));
err |= __get_user(karg->ca_getfh.gf_dev,
&arg32->ca32_getfh.gf32_dev);
err |= __get_user(karg->ca_getfh.gf_ino,
&arg32->ca32_getfh.gf32_ino);
err |= __get_user(karg->ca_getfh.gf_version,
&arg32->ca32_getfh.gf32_version);
return err;
}
static int nfs_getfd32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
{
int err;
err = get_user(karg->ca_version, &arg32->ca32_version);
err |= copy_from_user(&karg->ca_getfd.gd_addr,
&arg32->ca32_getfd.gd32_addr,
(sizeof(struct sockaddr)));
err |= copy_from_user(&karg->ca_getfd.gd_path,
&arg32->ca32_getfd.gd32_path,
(NFS_MAXPATHLEN+1));
err |= get_user(karg->ca_getfd.gd_version,
&arg32->ca32_getfd.gd32_version);
return err;
}
static int nfs_getfs32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
{
int err;
err = get_user(karg->ca_version, &arg32->ca32_version);
err |= copy_from_user(&karg->ca_getfs.gd_addr,
&arg32->ca32_getfs.gd32_addr,
(sizeof(struct sockaddr)));
err |= copy_from_user(&karg->ca_getfs.gd_path,
&arg32->ca32_getfs.gd32_path,
(NFS_MAXPATHLEN+1));
err |= get_user(karg->ca_getfs.gd_maxlen,
&arg32->ca32_getfs.gd32_maxlen);
return err;
}
/* This really doesn't need translations, we are only passing
* back a union which contains opaque nfs file handle data.
*/
static int nfs_getfh32_res_trans(union nfsctl_res *kres, union nfsctl_res32 *res32)
{
return copy_to_user(res32, kres, sizeof(*res32));
}
long asmlinkage sys32_nfsservctl(int cmd, struct nfsctl_arg32 *arg32, union nfsctl_res32 *res32)
{
struct nfsctl_arg *karg = NULL;
union nfsctl_res *kres = NULL;
mm_segment_t oldfs;
int err;
karg = kmalloc(sizeof(*karg), GFP_USER);
if(!karg)
return -ENOMEM;
if(res32) {
kres = kmalloc(sizeof(*kres), GFP_USER);
if(!kres) {
kfree(karg);
return -ENOMEM;
}
}
switch(cmd) {
case NFSCTL_SVC:
err = nfs_svc32_trans(karg, arg32);
break;
case NFSCTL_ADDCLIENT:
err = nfs_clnt32_trans(karg, arg32);
break;
case NFSCTL_DELCLIENT:
err = nfs_clnt32_trans(karg, arg32);
break;
case NFSCTL_EXPORT:
case NFSCTL_UNEXPORT:
err = nfs_exp32_trans(karg, arg32);
break;
case NFSCTL_GETFH:
err = nfs_getfh32_trans(karg, arg32);
break;
case NFSCTL_GETFD:
err = nfs_getfd32_trans(karg, arg32);
break;
case NFSCTL_GETFS:
err = nfs_getfs32_trans(karg, arg32);
break;
default:
err = -EINVAL;
break;
}
if(err)
goto done;
oldfs = get_fs();
set_fs(KERNEL_DS);
err = sys_nfsservctl(cmd, karg, kres);
set_fs(oldfs);
if (err)
goto done;
if((cmd == NFSCTL_GETFH) ||
(cmd == NFSCTL_GETFD) ||
(cmd == NFSCTL_GETFS))
err = nfs_getfh32_res_trans(kres, res32);
done:
if(karg) {
if(cmd == NFSCTL_UGIDUPDATE) {
if(karg->ca_umap.ug_ident)
kfree(karg->ca_umap.ug_ident);
if(karg->ca_umap.ug_udimap)
kfree(karg->ca_umap.ug_udimap);
if(karg->ca_umap.ug_gdimap)
kfree(karg->ca_umap.ug_gdimap);
}
kfree(karg);
}
if(kres)
kfree(kres);
return err;
}
#else /* !NFSD */
extern asmlinkage long sys_ni_syscall(void);
long asmlinkage sys32_nfsservctl(int cmd, void *notused, void *notused2)
{
return sys_ni_syscall();
}
#endif
#ifdef CONFIG_MODULES
extern asmlinkage unsigned long sys_create_module(const char *name_user, size_t size);
asmlinkage unsigned long sys32_create_module(const char *name_user, __kernel_size_t32 size)
{
return sys_create_module(name_user, (size_t)size);
}
extern asmlinkage int sys_init_module(const char *name_user, struct module *mod_user);
/* Hey, when you're trying to init module, take time and prepare us a nice 64bit
* module structure, even if from 32bit modutils... Why to pollute kernel... :))
*/
asmlinkage int sys32_init_module(const char *name_user, struct module *mod_user)
{
return sys_init_module(name_user, mod_user);
}
extern asmlinkage int sys_delete_module(const char *name_user);
asmlinkage int sys32_delete_module(const char *name_user)
{
return sys_delete_module(name_user);
}
struct module_info32 {
u32 addr;
u32 size;
u32 flags;
s32 usecount;
};
/* Query various bits about modules. */
static inline long
get_mod_name(const char *user_name, char **buf)
{
unsigned long page;
long retval;
if ((unsigned long)user_name >= TASK_SIZE
&& !segment_eq(get_fs (), KERNEL_DS))
return -EFAULT;
page = __get_free_page(GFP_KERNEL);
if (!page)
return -ENOMEM;
retval = strncpy_from_user((char *)page, user_name, PAGE_SIZE);
if (retval > 0) {
if (retval < PAGE_SIZE) {
*buf = (char *)page;
return retval;
}
retval = -ENAMETOOLONG;
} else if (!retval)
retval = -EINVAL;
free_page(page);
return retval;
}
static inline void
put_mod_name(char *buf)
{
free_page((unsigned long)buf);
}
static __inline__ struct module *find_module(const char *name)
{
struct module *mod;
for (mod = module_list; mod ; mod = mod->next) {
if (mod->flags & MOD_DELETED)
continue;
if (!strcmp(mod->name, name))
break;
}
return mod;
}
static int
qm_modules(char *buf, size_t bufsize, __kernel_size_t32 *ret)
{
struct module *mod;
size_t nmod, space, len;
nmod = space = 0;
for (mod = module_list; mod->next != NULL; mod = mod->next, ++nmod) {
len = strlen(mod->name)+1;
if (len > bufsize)
goto calc_space_needed;
if (copy_to_user(buf, mod->name, len))
return -EFAULT;
buf += len;
bufsize -= len;
space += len;
}
if (put_user(nmod, ret))
return -EFAULT;
else
return 0;
calc_space_needed:
space += len;
while ((mod = mod->next)->next != NULL)
space += strlen(mod->name)+1;
if (put_user(space, ret))
return -EFAULT;
else
return -ENOSPC;
}
static int
qm_deps(struct module *mod, char *buf, size_t bufsize, __kernel_size_t32 *ret)
{
size_t i, space, len;
if (mod->next == NULL)
return -EINVAL;
if (!MOD_CAN_QUERY(mod))
return put_user(0, ret);
space = 0;
for (i = 0; i < mod->ndeps; ++i) {
const char *dep_name = mod->deps[i].dep->name;
len = strlen(dep_name)+1;
if (len > bufsize)
goto calc_space_needed;
if (copy_to_user(buf, dep_name, len))
return -EFAULT;
buf += len;
bufsize -= len;
space += len;
}
return put_user(i, ret);
calc_space_needed:
space += len;
while (++i < mod->ndeps)
space += strlen(mod->deps[i].dep->name)+1;
if (put_user(space, ret))
return -EFAULT;
else
return -ENOSPC;
}
static int
qm_refs(struct module *mod, char *buf, size_t bufsize, __kernel_size_t32 *ret)
{
size_t nrefs, space, len;
struct module_ref *ref;
if (mod->next == NULL)
return -EINVAL;
if (!MOD_CAN_QUERY(mod))
if (put_user(0, ret))
return -EFAULT;
else
return 0;
space = 0;
for (nrefs = 0, ref = mod->refs; ref ; ++nrefs, ref = ref->next_ref) {
const char *ref_name = ref->ref->name;
len = strlen(ref_name)+1;
if (len > bufsize)
goto calc_space_needed;
if (copy_to_user(buf, ref_name, len))
return -EFAULT;
buf += len;
bufsize -= len;
space += len;
}
if (put_user(nrefs, ret))
return -EFAULT;
else
return 0;
calc_space_needed:
space += len;
while ((ref = ref->next_ref) != NULL)
space += strlen(ref->ref->name)+1;
if (put_user(space, ret))
return -EFAULT;
else
return -ENOSPC;
}
static inline int
qm_symbols(struct module *mod, char *buf, size_t bufsize, __kernel_size_t32 *ret)
{
size_t i, space, len;
struct module_symbol *s;
char *strings;
unsigned *vals;
if (!MOD_CAN_QUERY(mod))
if (put_user(0, ret))
return -EFAULT;
else
return 0;
space = mod->nsyms * 2*sizeof(u32);
i = len = 0;
s = mod->syms;
if (space > bufsize)
goto calc_space_needed;
if (!access_ok(VERIFY_WRITE, buf, space))
return -EFAULT;
bufsize -= space;
vals = (unsigned *)buf;
strings = buf+space;
for (; i < mod->nsyms ; ++i, ++s, vals += 2) {
len = strlen(s->name)+1;
if (len > bufsize)
goto calc_space_needed;
if (copy_to_user(strings, s->name, len)
|| __put_user(s->value, vals+0)
|| __put_user(space, vals+1))
return -EFAULT;
strings += len;
bufsize -= len;
space += len;
}
if (put_user(i, ret))
return -EFAULT;
else
return 0;
calc_space_needed:
for (; i < mod->nsyms; ++i, ++s)
space += strlen(s->name)+1;
if (put_user(space, ret))
return -EFAULT;
else
return -ENOSPC;
}
static inline int
qm_info(struct module *mod, char *buf, size_t bufsize, __kernel_size_t32 *ret)
{
int error = 0;
if (mod->next == NULL)
return -EINVAL;
if (sizeof(struct module_info32) <= bufsize) {
struct module_info32 info;
info.addr = (unsigned long)mod;
info.size = mod->size;
info.flags = mod->flags;
info.usecount =
((mod_member_present(mod, can_unload)
&& mod->can_unload)
? -1 : atomic_read(&mod->uc.usecount));
if (copy_to_user(buf, &info, sizeof(struct module_info32)))
return -EFAULT;
} else
error = -ENOSPC;
if (put_user(sizeof(struct module_info32), ret))
return -EFAULT;
return error;
}
asmlinkage int sys32_query_module(char *name_user, int which, char *buf, __kernel_size_t32 bufsize, u32 ret)
{
struct module *mod;
int err;
lock_kernel();
if (name_user == 0) {
/* This finds "kernel_module" which is not exported. */
for(mod = module_list; mod->next != NULL; mod = mod->next)
;
} else {
long namelen;
char *name;
if ((namelen = get_mod_name(name_user, &name)) < 0) {
err = namelen;
goto out;
}
err = -ENOENT;
if (namelen == 0) {
/* This finds "kernel_module" which is not exported. */
for(mod = module_list; mod->next != NULL; mod = mod->next)
;
} else if ((mod = find_module(name)) == NULL) {
put_mod_name(name);
goto out;
}
put_mod_name(name);
}
switch (which)
{
case 0:
err = 0;
break;
case QM_MODULES:
err = qm_modules(buf, bufsize, (__kernel_size_t32 *)AA(ret));
break;
case QM_DEPS:
err = qm_deps(mod, buf, bufsize, (__kernel_size_t32 *)AA(ret));
break;
case QM_REFS:
err = qm_refs(mod, buf, bufsize, (__kernel_size_t32 *)AA(ret));
break;
case QM_SYMBOLS:
err = qm_symbols(mod, buf, bufsize, (__kernel_size_t32 *)AA(ret));
break;
case QM_INFO:
err = qm_info(mod, buf, bufsize, (__kernel_size_t32 *)AA(ret));
break;
default:
err = -EINVAL;
break;
}
out:
unlock_kernel();
return err;
}
struct kernel_sym32 {
u32 value;
char name[60];
};
extern asmlinkage int sys_get_kernel_syms(struct kernel_sym *table);
asmlinkage int sys32_get_kernel_syms(struct kernel_sym32 *table)
{
int len, i;
struct kernel_sym *tbl;
mm_segment_t old_fs;
len = sys_get_kernel_syms(NULL);
if (!table) return len;
tbl = kmalloc (len * sizeof (struct kernel_sym), GFP_KERNEL);
if (!tbl) return -ENOMEM;
old_fs = get_fs();
set_fs (KERNEL_DS);
sys_get_kernel_syms(tbl);
set_fs (old_fs);
for (i = 0; i < len; i++, table++) {
if (put_user (tbl[i].value, &table->value) ||
copy_to_user (table->name, tbl[i].name, 60))
break;
}
kfree (tbl);
return i;
}
#else /* CONFIG_MODULES */
asmlinkage unsigned long
sys32_create_module(const char *name_user, size_t size)
{
return -ENOSYS;
}
asmlinkage int
sys32_init_module(const char *name_user, struct module *mod_user)
{
return -ENOSYS;
}
asmlinkage int
sys32_delete_module(const char *name_user)
{
return -ENOSYS;
}
asmlinkage int
sys32_query_module(const char *name_user, int which, char *buf, size_t bufsize,
size_t *ret)
{
/* Let the program know about the new interface. Not that
it'll do them much good. */
if (which == 0)
return 0;
return -ENOSYS;
}
asmlinkage int
sys32_get_kernel_syms(struct kernel_sym *table)
{
return -ENOSYS;
}
#endif /* CONFIG_MODULES */
long sys32_vm86_warning(void)
{
static long warn_time = -(60*HZ);
if (time_before(warn_time + 60*HZ,jiffies)) {
printk(KERN_INFO "%s: vm86 mode not supported on 64 bit kernel\n",
current->comm);
warn_time = jiffies;
}
return -ENOSYS ;
}
/* This only triggers an i686 uname */
struct exec_domain ia32_exec_domain = {
name: "linux/uname-i686",
pers_low: PER_LINUX32,
pers_high: PER_LINUX32,
};
static int __init ia32_init (void)
{
printk("IA32 emulation $Id: sys_ia32.c,v 1.70 2004/03/03 23:36:43 ak Exp $\n");
ia32_exec_domain.signal_map = default_exec_domain.signal_map;
ia32_exec_domain.signal_invmap = default_exec_domain.signal_invmap;
register_exec_domain(&ia32_exec_domain);
return 0;
}
__initcall(ia32_init);
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