linux: implement filesystem-side copy/clone functions for EL7
[zfs.git] / config / kernel-access-ok-type.m4
blobdc9433458703c048cdc0e4f8d8474ba4ad0d7591
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_SRC_ACCESS_OK_TYPE], [
8         ZFS_LINUX_TEST_SRC([access_ok_type], [
9                 #include <linux/uaccess.h>
10         ],[
11                 const void __user __attribute__((unused)) *addr =
12                     (void *) 0xdeadbeef;
13                 unsigned long __attribute__((unused)) size = 1;
14                 int error __attribute__((unused)) = access_ok(0, addr, size);
15         ])
18 AC_DEFUN([ZFS_AC_KERNEL_ACCESS_OK_TYPE], [
19         AC_MSG_CHECKING([whether access_ok() has 'type' parameter])
20         ZFS_LINUX_TEST_RESULT([access_ok_type], [
21                 AC_MSG_RESULT(yes)
22                 AC_DEFINE(HAVE_ACCESS_OK_TYPE, 1,
23                     [kernel has access_ok with 'type' parameter])
24         ],[
25                 AC_MSG_RESULT(no)
26         ])