long compat_sys_msgctl(int first, int second, void __user *uptr)
{
int err, err2;
struct msqid64_ds m64;
int version = compat_ipc_parse_version(&second);
void __user *p;
memset(&m64, 0, sizeof(m64));
switch (second & (~IPC_64)) {
case IPC_INFO:
case IPC_RMID:
case MSG_INFO:
err = sys_msgctl(first, second, uptr);
break;
case IPC_SET:
if (version == IPC_64) {
err = get_compat_msqid64(&m64, uptr);
} else {
err = get_compat_msqid(&m64, uptr);
}
if (err)
break;
p = compat_alloc_user_space(sizeof(m64));
if (copy_to_user(p, &m64, sizeof(m64)))
err = -EFAULT;
else
err = sys_msgctl(first, second, p);
break;
case IPC_STAT:
case MSG_STAT:
p = compat_alloc_user_space(sizeof(m64));
err = sys_msgctl(first, second, p);
if (err < 0)
break;
if (copy_from_user(&m64, p, sizeof(m64)))
err2 = -EFAULT;
else if (version == IPC_64)
err2 = put_compat_msqid64_ds(&m64, uptr);
else
err2 = put_compat_msqid_ds(&m64, uptr);
if (err2)
err = -EFAULT;
break;
default:
err = -EINVAL;
break;
}
return err;
}
static long do_compat_semctl(int first, int second, int third, u32 pad)
{
unsigned long fourth;
int err, err2;
struct semid64_ds s64;
struct semid64_ds __user *up64;
int version = compat_ipc_parse_version(&third);
memset(&s64, 0, sizeof(s64));
if ((third & (~IPC_64)) == SETVAL)
#ifdef __BIG_ENDIAN
fourth = (unsigned long)pad << 32;
#else
fourth = pad;
#endif
else
long compat_sys_shmctl(int first, int second, void __user *uptr)
{
void __user *p;
struct shmid64_ds s64;
struct shminfo64 smi;
int err, err2;
int version = compat_ipc_parse_version(&second);
memset(&s64, 0, sizeof(s64));
switch (second & (~IPC_64)) {
case IPC_RMID:
case SHM_LOCK:
case SHM_UNLOCK:
err = sys_shmctl(first, second, uptr);
break;
case IPC_INFO:
p = compat_alloc_user_space(sizeof(smi));
err = sys_shmctl(first, second, p);
if (err < 0)
break;
if (copy_from_user(&smi, p, sizeof(smi)))
err2 = -EFAULT;
else if (version == IPC_64)
err2 = put_compat_shminfo64(&smi, uptr);
else
err2 = put_compat_shminfo(&smi, uptr);
if (err2)
err = -EFAULT;
break;
case IPC_SET:
if (version == IPC_64) {
err = get_compat_shmid64_ds(&s64, uptr);
} else {
err = get_compat_shmid_ds(&s64, uptr);
}
if (err)
break;
p = compat_alloc_user_space(sizeof(s64));
if (copy_to_user(p, &s64, sizeof(s64)))
err = -EFAULT;
else
err = sys_shmctl(first, second, p);
break;
case IPC_STAT:
case SHM_STAT:
p = compat_alloc_user_space(sizeof(s64));
err = sys_shmctl(first, second, p);
if (err < 0)
break;
if (copy_from_user(&s64, p, sizeof(s64)))
err2 = -EFAULT;
else if (version == IPC_64)
err2 = put_compat_shmid64_ds(&s64, uptr);
else
err2 = put_compat_shmid_ds(&s64, uptr);
if (err2)
err = -EFAULT;
break;
case SHM_INFO:
p = compat_alloc_user_space(sizeof(struct shm_info));
err = sys_shmctl(first, second, p);
if (err < 0)
break;
err2 = put_compat_shm_info(p, uptr);
if (err2)
err = -EFAULT;
break;
default:
err = -EINVAL;
break;
}
return err;
}
static long do_compat_semctl(int first, int second, int third, u32 pad)
{
union semun fourth;
int err, err2;
struct semid64_ds s64;
struct semid64_ds __user *up64;
int version = compat_ipc_parse_version(&third);
memset(&s64, 0, sizeof(s64));
if ((third & (~IPC_64)) == SETVAL)
fourth.val = (int) pad;
else
fourth.__pad = compat_ptr(pad);
switch (third & (~IPC_64)) {
case IPC_INFO:
case IPC_RMID:
case SEM_INFO:
case GETVAL:
case GETPID:
case GETNCNT:
case GETZCNT:
case GETALL:
case SETVAL:
case SETALL:
err = sys_semctl(first, second, third, fourth);
break;
case IPC_STAT:
case SEM_STAT:
up64 = compat_alloc_user_space(sizeof(s64));
fourth.__pad = up64;
err = sys_semctl(first, second, third, fourth);
if (err < 0)
break;
if (copy_from_user(&s64, up64, sizeof(s64)))
err2 = -EFAULT;
else if (version == IPC_64)
err2 = put_compat_semid64_ds(&s64, compat_ptr(pad));
else
err2 = put_compat_semid_ds(&s64, compat_ptr(pad));
if (err2)
err = -EFAULT;
break;
case IPC_SET:
if (version == IPC_64) {
err = get_compat_semid64_ds(&s64, compat_ptr(pad));
} else {
err = get_compat_semid_ds(&s64, compat_ptr(pad));
}
up64 = compat_alloc_user_space(sizeof(s64));
if (copy_to_user(up64, &s64, sizeof(s64)))
err = -EFAULT;
if (err)
break;
fourth.__pad = up64;
err = sys_semctl(first, second, third, fourth);
break;
default:
err = -EINVAL;
break;
}
return err;
}
