[mirror_zfs.git] / config / kernel-kuid-helpers.m4

dnl #
dnl # 3.5 API change,
dnl # Since usernamespaces were introduced in kernel version 3.5, it
dnl # became necessary to go through one more level of indirection
dnl # when dealing with uid/gid - namely the kuid type.
dnl #
dnl #
AC_DEFUN([ZFS_AC_KERNEL_KUID_HELPERS], [
	AC_MSG_CHECKING([whether i_(uid|gid)_(read|write) exist])
	ZFS_LINUX_TRY_COMPILE([
		#include <linux/fs.h>
	],[
		struct inode *ip = NULL;
		(void) i_uid_read(ip);
	],[
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_KUID_HELPERS, 1,
		    [i_(uid|gid)_(read|write) exist])
	],[
		AC_MSG_RESULT(no)
	])
])
Commit	Line	Data
82a1b2d6 NB	1	dnl #
	2	dnl # 3.5 API change,
	3	dnl # Since usernamespaces were introduced in kernel version 3.5, it
	4	dnl # became necessary to go through one more level of indirection
	5	dnl # when dealing with uid/gid - namely the kuid type.
	6	dnl #
	7	dnl #
	8	AC_DEFUN([ZFS_AC_KERNEL_KUID_HELPERS], [
	9	AC_MSG_CHECKING([whether i_(uid\|gid)_(read\|write) exist])
	10	ZFS_LINUX_TRY_COMPILE([
	11	#include <linux/fs.h>
	12	],[
	13	struct inode *ip = NULL;
	14	(void) i_uid_read(ip);
	15	],[
	16	AC_MSG_RESULT(yes)
	17	AC_DEFINE(HAVE_KUID_HELPERS, 1,
	18	[i_(uid\|gid)_(read\|write) exist])
	19	],[
	20	AC_MSG_RESULT(no)
	21	])
	22	])