[mirror_zfs.git] / config / kernel-access-ok-type.m4

dnl #
dnl # Linux 5.0: access_ok() drops 'type' parameter:
dnl #
dnl # - access_ok(type, addr, size)
dnl # + access_ok(addr, size)
dnl #
AC_DEFUN([ZFS_AC_KERNEL_ACCESS_OK_TYPE], [
	AC_MSG_CHECKING([whether access_ok() has 'type' parameter])
	ZFS_LINUX_TRY_COMPILE([
		#include <linux/uaccess.h>
	],[
		const void __user __attribute__((unused)) *addr = (void *) 0xdeadbeef;
		unsigned long __attribute__((unused)) size = 1;
		int error __attribute__((unused)) = access_ok(0, addr, size);
	],[
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_ACCESS_OK_TYPE, 1, [kernel has access_ok with 'type' parameter])
	],[
		AC_MSG_RESULT(no)
	])
])
Commit	Line	Data
77e50c30 TH	1	dnl #
	2	dnl # Linux 5.0: access_ok() drops 'type' parameter:
	3	dnl #
	4	dnl # - access_ok(type, addr, size)
	5	dnl # + access_ok(addr, size)
	6	dnl #
	7	AC_DEFUN([ZFS_AC_KERNEL_ACCESS_OK_TYPE], [
	8	AC_MSG_CHECKING([whether access_ok() has 'type' parameter])
	9	ZFS_LINUX_TRY_COMPILE([
	10	#include <linux/uaccess.h>
	11	],[
	12	const void __user __attribute__((unused)) addr = (void ) 0xdeadbeef;
	13	unsigned long __attribute__((unused)) size = 1;
	14	int error __attribute__((unused)) = access_ok(0, addr, size);
	15	],[
	16	AC_MSG_RESULT(yes)
	17	AC_DEFINE(HAVE_ACCESS_OK_TYPE, 1, [kernel has access_ok with 'type' parameter])
	18	],[
	19	AC_MSG_RESULT(no)
	20	])
	21	])