2022-10-19 18:17:09 +00:00
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dnl #
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dnl # 5.12 API
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dnl #
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dnl # Check if APIs for idmapped mount are available
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_IDMAP_MNT_API], [
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ZFS_LINUX_TEST_SRC([idmap_mnt_api], [
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#include <linux/fs.h>
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],[
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int fs_flags = 0;
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fs_flags |= FS_ALLOW_IDMAP;
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_IDMAP_MNT_API], [
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AC_MSG_CHECKING([whether APIs for idmapped mount are present])
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ZFS_LINUX_TEST_RESULT([idmap_mnt_api], [
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AC_MSG_RESULT([yes])
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AC_DEFINE(HAVE_IDMAP_MNT_API, 1,
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[APIs for idmapped mount are present])
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],[
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AC_MSG_RESULT([no])
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])
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])
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2024-01-23 10:14:06 +00:00
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dnl #
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dnl # 6.8 decouples mnt_idmap from user_namespace. This is all internal
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dnl # to mnt_idmap so we can't detect it directly, but we detect a related
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dnl # change as use that as a signal.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_IDMAP_NO_USERNS], [
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ZFS_LINUX_TEST_SRC([idmap_no_userns], [
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#include <linux/uidgid.h>
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], [
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struct uid_gid_map *map = NULL;
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map_id_down(map, 0);
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_IDMAP_NO_USERNS], [
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AC_MSG_CHECKING([whether idmapped mounts have a user namespace])
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ZFS_LINUX_TEST_RESULT([idmap_no_userns], [
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AC_MSG_RESULT([yes])
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AC_DEFINE(HAVE_IDMAP_NO_USERNS, 1,
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[mnt_idmap does not have user_namespace])
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], [
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AC_MSG_RESULT([no])
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])
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])
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