zfs-builds-mm/zfs-0.8.4/config/kernel-kuidgid.m4
2020-07-19 16:21:53 +02:00

34 lines
909 B
Text

dnl #
dnl # User namespaces, use kuid_t in place of uid_t
dnl # where available. Not strictly a user namespaces thing
dnl # but it should prevent surprises
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_KUIDGID_T], [
ZFS_LINUX_TEST_SRC([kuidgid_t_init], [
#include <linux/uidgid.h>
], [
kuid_t userid __attribute__ ((unused)) = KUIDT_INIT(0);
kgid_t groupid __attribute__ ((unused)) = KGIDT_INIT(0);
])
ZFS_LINUX_TEST_SRC([kuidgid_t], [
#include <linux/uidgid.h>
], [
kuid_t userid __attribute__ ((unused)) = 0;
kgid_t groupid __attribute__ ((unused)) = 0;
])
])
AC_DEFUN([ZFS_AC_KERNEL_KUIDGID_T], [
AC_MSG_CHECKING([whether kuid_t/kgid_t is available])
ZFS_LINUX_TEST_RESULT([kuidgid_t_init], [
ZFS_LINUX_TEST_RESULT([kuidgid_t], [
AC_MSG_RESULT(yes; optional)
],[
AC_MSG_RESULT(yes; mandatory)
AC_DEFINE(HAVE_KUIDGID_T, 1, [kuid_t/kgid_t in use])
])
],[
AC_MSG_RESULT(no)
])
])