491 строка
14 KiB
C
491 строка
14 KiB
C
/* sys_sparc32.c: Conversion between 32bit and 64bit native syscalls.
|
|
*
|
|
* Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
|
|
* Copyright (C) 1997, 2007 David S. Miller (davem@davemloft.net)
|
|
*
|
|
* These routines maintain argument size conversion between 32bit and 64bit
|
|
* environment.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/capability.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/file.h>
|
|
#include <linux/signal.h>
|
|
#include <linux/resource.h>
|
|
#include <linux/times.h>
|
|
#include <linux/smp.h>
|
|
#include <linux/sem.h>
|
|
#include <linux/msg.h>
|
|
#include <linux/shm.h>
|
|
#include <linux/uio.h>
|
|
#include <linux/nfs_fs.h>
|
|
#include <linux/quota.h>
|
|
#include <linux/poll.h>
|
|
#include <linux/personality.h>
|
|
#include <linux/stat.h>
|
|
#include <linux/filter.h>
|
|
#include <linux/highmem.h>
|
|
#include <linux/highuid.h>
|
|
#include <linux/mman.h>
|
|
#include <linux/ipv6.h>
|
|
#include <linux/in.h>
|
|
#include <linux/icmpv6.h>
|
|
#include <linux/syscalls.h>
|
|
#include <linux/sysctl.h>
|
|
#include <linux/binfmts.h>
|
|
#include <linux/dnotify.h>
|
|
#include <linux/security.h>
|
|
#include <linux/compat.h>
|
|
#include <linux/vfs.h>
|
|
#include <linux/ptrace.h>
|
|
#include <linux/slab.h>
|
|
|
|
#include <asm/types.h>
|
|
#include <asm/uaccess.h>
|
|
#include <asm/fpumacro.h>
|
|
#include <asm/mmu_context.h>
|
|
#include <asm/compat_signal.h>
|
|
|
|
#ifdef CONFIG_SYSVIPC
|
|
asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth)
|
|
{
|
|
int version;
|
|
|
|
version = call >> 16; /* hack for backward compatibility */
|
|
call &= 0xffff;
|
|
|
|
switch (call) {
|
|
case SEMTIMEDOP:
|
|
if (fifth)
|
|
/* sign extend semid */
|
|
return compat_sys_semtimedop((int)first,
|
|
compat_ptr(ptr), second,
|
|
compat_ptr(fifth));
|
|
/* else fall through for normal semop() */
|
|
case SEMOP:
|
|
/* struct sembuf is the same on 32 and 64bit :)) */
|
|
/* sign extend semid */
|
|
return sys_semtimedop((int)first, compat_ptr(ptr), second,
|
|
NULL);
|
|
case SEMGET:
|
|
/* sign extend key, nsems */
|
|
return sys_semget((int)first, (int)second, third);
|
|
case SEMCTL:
|
|
/* sign extend semid, semnum */
|
|
return compat_sys_semctl((int)first, (int)second, third,
|
|
compat_ptr(ptr));
|
|
|
|
case MSGSND:
|
|
/* sign extend msqid */
|
|
return compat_sys_msgsnd((int)first, (int)second, third,
|
|
compat_ptr(ptr));
|
|
case MSGRCV:
|
|
/* sign extend msqid, msgtyp */
|
|
return compat_sys_msgrcv((int)first, second, (int)fifth,
|
|
third, version, compat_ptr(ptr));
|
|
case MSGGET:
|
|
/* sign extend key */
|
|
return sys_msgget((int)first, second);
|
|
case MSGCTL:
|
|
/* sign extend msqid */
|
|
return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
|
|
|
|
case SHMAT:
|
|
/* sign extend shmid */
|
|
return compat_sys_shmat((int)first, second, third, version,
|
|
compat_ptr(ptr));
|
|
case SHMDT:
|
|
return sys_shmdt(compat_ptr(ptr));
|
|
case SHMGET:
|
|
/* sign extend key_t */
|
|
return sys_shmget((int)first, second, third);
|
|
case SHMCTL:
|
|
/* sign extend shmid */
|
|
return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
|
|
|
|
default:
|
|
return -ENOSYS;
|
|
}
|
|
|
|
return -ENOSYS;
|
|
}
|
|
#endif
|
|
|
|
asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
|
|
{
|
|
if ((int)high < 0)
|
|
return -EINVAL;
|
|
else
|
|
return sys_truncate(path, (high << 32) | low);
|
|
}
|
|
|
|
asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
|
|
{
|
|
if ((int)high < 0)
|
|
return -EINVAL;
|
|
else
|
|
return sys_ftruncate(fd, (high << 32) | low);
|
|
}
|
|
|
|
static int cp_compat_stat64(struct kstat *stat,
|
|
struct compat_stat64 __user *statbuf)
|
|
{
|
|
int err;
|
|
|
|
err = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev);
|
|
err |= put_user(stat->ino, &statbuf->st_ino);
|
|
err |= put_user(stat->mode, &statbuf->st_mode);
|
|
err |= put_user(stat->nlink, &statbuf->st_nlink);
|
|
err |= put_user(from_kuid_munged(current_user_ns(), stat->uid), &statbuf->st_uid);
|
|
err |= put_user(from_kgid_munged(current_user_ns(), stat->gid), &statbuf->st_gid);
|
|
err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev);
|
|
err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]);
|
|
err |= put_user(stat->size, &statbuf->st_size);
|
|
err |= put_user(stat->blksize, &statbuf->st_blksize);
|
|
err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]);
|
|
err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]);
|
|
err |= put_user(stat->blocks, &statbuf->st_blocks);
|
|
err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
|
|
err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
|
|
err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
|
|
err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
|
|
err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
|
|
err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
|
|
err |= put_user(0, &statbuf->__unused4);
|
|
err |= put_user(0, &statbuf->__unused5);
|
|
|
|
return err;
|
|
}
|
|
|
|
asmlinkage long compat_sys_stat64(const char __user * filename,
|
|
struct compat_stat64 __user *statbuf)
|
|
{
|
|
struct kstat stat;
|
|
int error = vfs_stat(filename, &stat);
|
|
|
|
if (!error)
|
|
error = cp_compat_stat64(&stat, statbuf);
|
|
return error;
|
|
}
|
|
|
|
asmlinkage long compat_sys_lstat64(const char __user * filename,
|
|
struct compat_stat64 __user *statbuf)
|
|
{
|
|
struct kstat stat;
|
|
int error = vfs_lstat(filename, &stat);
|
|
|
|
if (!error)
|
|
error = cp_compat_stat64(&stat, statbuf);
|
|
return error;
|
|
}
|
|
|
|
asmlinkage long compat_sys_fstat64(unsigned int fd,
|
|
struct compat_stat64 __user * statbuf)
|
|
{
|
|
struct kstat stat;
|
|
int error = vfs_fstat(fd, &stat);
|
|
|
|
if (!error)
|
|
error = cp_compat_stat64(&stat, statbuf);
|
|
return error;
|
|
}
|
|
|
|
asmlinkage long compat_sys_fstatat64(unsigned int dfd,
|
|
const char __user *filename,
|
|
struct compat_stat64 __user * statbuf, int flag)
|
|
{
|
|
struct kstat stat;
|
|
int error;
|
|
|
|
error = vfs_fstatat(dfd, filename, &stat, flag);
|
|
if (error)
|
|
return error;
|
|
return cp_compat_stat64(&stat, statbuf);
|
|
}
|
|
|
|
asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2)
|
|
{
|
|
return sys_sysfs(option, arg1, arg2);
|
|
}
|
|
|
|
asmlinkage long compat_sys_rt_sigprocmask(int how,
|
|
compat_sigset_t __user *set,
|
|
compat_sigset_t __user *oset,
|
|
compat_size_t sigsetsize)
|
|
{
|
|
sigset_t s;
|
|
compat_sigset_t s32;
|
|
int ret;
|
|
mm_segment_t old_fs = get_fs();
|
|
|
|
if (set) {
|
|
if (copy_from_user (&s32, set, sizeof(compat_sigset_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 ? (sigset_t __user *) &s : NULL,
|
|
oset ? (sigset_t __user *) &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(compat_sigset_t)))
|
|
return -EFAULT;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
|
|
compat_size_t sigsetsize)
|
|
{
|
|
sigset_t s;
|
|
compat_sigset_t s32;
|
|
int ret;
|
|
mm_segment_t old_fs = get_fs();
|
|
|
|
set_fs (KERNEL_DS);
|
|
ret = sys_rt_sigpending((sigset_t __user *) &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(compat_sigset_t)))
|
|
return -EFAULT;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig,
|
|
struct compat_siginfo __user *uinfo)
|
|
{
|
|
siginfo_t info;
|
|
int ret;
|
|
mm_segment_t old_fs = get_fs();
|
|
|
|
if (copy_siginfo_from_user32(&info, uinfo))
|
|
return -EFAULT;
|
|
|
|
set_fs (KERNEL_DS);
|
|
ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
|
|
set_fs (old_fs);
|
|
return ret;
|
|
}
|
|
|
|
asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act,
|
|
struct old_sigaction32 __user *oact)
|
|
{
|
|
struct k_sigaction new_ka, old_ka;
|
|
int ret;
|
|
|
|
WARN_ON_ONCE(sig >= 0);
|
|
sig = -sig;
|
|
|
|
if (act) {
|
|
compat_old_sigset_t mask;
|
|
u32 u_handler, u_restorer;
|
|
|
|
ret = get_user(u_handler, &act->sa_handler);
|
|
new_ka.sa.sa_handler = compat_ptr(u_handler);
|
|
ret |= __get_user(u_restorer, &act->sa_restorer);
|
|
new_ka.sa.sa_restorer = compat_ptr(u_restorer);
|
|
ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
|
|
ret |= __get_user(mask, &act->sa_mask);
|
|
if (ret)
|
|
return ret;
|
|
new_ka.ka_restorer = NULL;
|
|
siginitset(&new_ka.sa.sa_mask, mask);
|
|
}
|
|
|
|
ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
|
|
|
|
if (!ret && oact) {
|
|
ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
|
|
ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
|
|
ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
|
|
ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
asmlinkage long compat_sys_rt_sigaction(int sig,
|
|
struct sigaction32 __user *act,
|
|
struct sigaction32 __user *oact,
|
|
void __user *restorer,
|
|
compat_size_t sigsetsize)
|
|
{
|
|
struct k_sigaction new_ka, old_ka;
|
|
int ret;
|
|
compat_sigset_t set32;
|
|
|
|
/* XXX: Don't preclude handling different sized sigset_t's. */
|
|
if (sigsetsize != sizeof(compat_sigset_t))
|
|
return -EINVAL;
|
|
|
|
if (act) {
|
|
u32 u_handler, u_restorer;
|
|
|
|
new_ka.ka_restorer = restorer;
|
|
ret = get_user(u_handler, &act->sa_handler);
|
|
new_ka.sa.sa_handler = compat_ptr(u_handler);
|
|
ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t));
|
|
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 |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
|
|
ret |= __get_user(u_restorer, &act->sa_restorer);
|
|
new_ka.sa.sa_restorer = compat_ptr(u_restorer);
|
|
if (ret)
|
|
return -EFAULT;
|
|
}
|
|
|
|
ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
|
|
|
|
if (!ret && oact) {
|
|
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];
|
|
}
|
|
ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
|
|
ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t));
|
|
ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
|
|
ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
|
|
if (ret)
|
|
ret = -EFAULT;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
#ifdef CONFIG_MODULES
|
|
|
|
asmlinkage long sys32_init_module(void __user *umod, u32 len,
|
|
const char __user *uargs)
|
|
{
|
|
return sys_init_module(umod, len, uargs);
|
|
}
|
|
|
|
asmlinkage long sys32_delete_module(const char __user *name_user,
|
|
unsigned int flags)
|
|
{
|
|
return sys_delete_module(name_user, flags);
|
|
}
|
|
|
|
#else /* CONFIG_MODULES */
|
|
|
|
asmlinkage long sys32_init_module(const char __user *name_user,
|
|
struct module __user *mod_user)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
asmlinkage long sys32_delete_module(const char __user *name_user)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
#endif /* CONFIG_MODULES */
|
|
|
|
asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
|
|
char __user *ubuf,
|
|
compat_size_t count,
|
|
unsigned long poshi,
|
|
unsigned long poslo)
|
|
{
|
|
return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo);
|
|
}
|
|
|
|
asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd,
|
|
char __user *ubuf,
|
|
compat_size_t count,
|
|
unsigned long poshi,
|
|
unsigned long poslo)
|
|
{
|
|
return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo);
|
|
}
|
|
|
|
asmlinkage long compat_sys_readahead(int fd,
|
|
unsigned long offhi,
|
|
unsigned long offlo,
|
|
compat_size_t count)
|
|
{
|
|
return sys_readahead(fd, (offhi << 32) | offlo, count);
|
|
}
|
|
|
|
long compat_sys_fadvise64(int fd,
|
|
unsigned long offhi,
|
|
unsigned long offlo,
|
|
compat_size_t len, int advice)
|
|
{
|
|
return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice);
|
|
}
|
|
|
|
long compat_sys_fadvise64_64(int fd,
|
|
unsigned long offhi, unsigned long offlo,
|
|
unsigned long lenhi, unsigned long lenlo,
|
|
int advice)
|
|
{
|
|
return sys_fadvise64_64(fd,
|
|
(offhi << 32) | offlo,
|
|
(lenhi << 32) | lenlo,
|
|
advice);
|
|
}
|
|
|
|
/* This is just a version for 32-bit applications which does
|
|
* not force O_LARGEFILE on.
|
|
*/
|
|
|
|
asmlinkage long sparc32_open(const char __user *filename,
|
|
int flags, int mode)
|
|
{
|
|
return do_sys_open(AT_FDCWD, filename, flags, mode);
|
|
}
|
|
|
|
long sys32_lookup_dcookie(unsigned long cookie_high,
|
|
unsigned long cookie_low,
|
|
char __user *buf, size_t len)
|
|
{
|
|
return sys_lookup_dcookie((cookie_high << 32) | cookie_low,
|
|
buf, len);
|
|
}
|
|
|
|
long compat_sync_file_range(int fd, unsigned long off_high, unsigned long off_low, unsigned long nb_high, unsigned long nb_low, int flags)
|
|
{
|
|
return sys_sync_file_range(fd,
|
|
(off_high << 32) | off_low,
|
|
(nb_high << 32) | nb_low,
|
|
flags);
|
|
}
|
|
|
|
asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
|
|
u32 lenhi, u32 lenlo)
|
|
{
|
|
return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
|
|
((loff_t)lenhi << 32) | lenlo);
|
|
}
|