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dnl #
dnl # 5.12 API
dnl #
dnl # Check if APIs for idmapped mount are available
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_IDMAP_MNT_API], [
ZFS_LINUX_TEST_SRC([idmap_mnt_api], [
#include <linux/fs.h>
],[
int fs_flags = 0;
fs_flags |= FS_ALLOW_IDMAP;
])
])
AC_DEFUN([ZFS_AC_KERNEL_IDMAP_MNT_API], [
AC_MSG_CHECKING([whether APIs for idmapped mount are present])
ZFS_LINUX_TEST_RESULT([idmap_mnt_api], [
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_IDMAP_MNT_API, 1,
[APIs for idmapped mount are present])
],[
AC_MSG_RESULT([no])
])
])
dnl #
dnl # 6.8 decouples mnt_idmap from user_namespace. This is all internal
dnl # to mnt_idmap so we can't detect it directly, but we detect a related
dnl # change as use that as a signal.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_IDMAP_NO_USERNS], [
ZFS_LINUX_TEST_SRC([idmap_no_userns], [
#include <linux/uidgid.h>
], [
struct uid_gid_map *map = NULL;
map_id_down(map, 0);
])
])
AC_DEFUN([ZFS_AC_KERNEL_IDMAP_NO_USERNS], [
AC_MSG_CHECKING([whether idmapped mounts have a user namespace])
ZFS_LINUX_TEST_RESULT([idmap_no_userns], [
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_IDMAP_NO_USERNS, 1,
[mnt_idmap does not have user_namespace])
], [
AC_MSG_RESULT([no])
])
])
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