haiku/headers/private/kernel/util/syscall_args.h

31 lines
533 B
C
Raw Normal View History

// syscall_args.h
#ifndef _SYSCALL_ARGS_H
#define _SYSCALL_ARGS_H
#include <vm.h>
// copy_ref_var_from_user
template<typename T>
inline
status_t
copy_ref_var_from_user(T *user, T &kernel)
{
if (CHECK_USER_ADDRESS(user))
return B_BAD_ADDRESS;
return user_memcpy(&kernel, user, sizeof(T));
}
// copy_ref_var_to_user
template<typename T>
inline
status_t
copy_ref_var_to_user(T &kernel, T *user)
{
if (CHECK_USER_ADDRESS(user))
return B_BAD_ADDRESS;
return user_memcpy(user, &kernel, sizeof(T));
}
#endif // _SYSCALL_ARGS_H