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dnl #
dnl # On certain architectures `__copy_from_user_inatomic`
dnl # is a GPL exported variable and cannot be used by OpenZFS.
dnl #
dnl #
dnl # Checking if `__copy_from_user_inatomic` is available.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC___COPY_FROM_USER_INATOMIC], [
ZFS_LINUX_TEST_SRC([__copy_from_user_inatomic], [
#include <linux/uaccess.h>
], [
int result __attribute__ ((unused)) = __copy_from_user_inatomic(NULL, NULL, 0);
], [], [ZFS_META_LICENSE])
])
AC_DEFUN([ZFS_AC_KERNEL___COPY_FROM_USER_INATOMIC], [
AC_MSG_CHECKING([whether __copy_from_user_inatomic is available])
ZFS_LINUX_TEST_RESULT([__copy_from_user_inatomic_license], [
AC_MSG_RESULT(yes)
], [
AC_MSG_RESULT(no)
AC_MSG_ERROR([
*** The `__copy_from_user_inatomic()` Linux kernel function is
*** incompatible with the CDDL license and will prevent the module
*** linking stage from succeeding. OpenZFS cannot be compiled.
])
])
])
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