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dnl #
dnl # 2.6.39 API change,
dnl # The is_owner_or_cap() macro was renamed to inode_owner_or_capable(),
dnl # This is used for permission checks in the xattr and file attribute call
dnl # paths.
dnl #
dnl # 5.12 API change,
dnl # inode_owner_or_capable() now takes struct user_namespace *
dnl # to support idmapped mounts
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_OWNER_OR_CAPABLE], [
ZFS_LINUX_TEST_SRC([inode_owner_or_capable], [
#include <linux/fs.h>
],[
struct inode *ip = NULL;
(void) inode_owner_or_capable(ip);
])
ZFS_LINUX_TEST_SRC([inode_owner_or_capable_idmapped], [
#include <linux/fs.h>
],[
struct inode *ip = NULL;
(void) inode_owner_or_capable(&init_user_ns, ip);
])
])
AC_DEFUN([ZFS_AC_KERNEL_INODE_OWNER_OR_CAPABLE], [
AC_MSG_CHECKING([whether inode_owner_or_capable() exists])
ZFS_LINUX_TEST_RESULT([inode_owner_or_capable], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_INODE_OWNER_OR_CAPABLE, 1,
[inode_owner_or_capable() exists])
], [
AC_MSG_RESULT(no)
AC_MSG_CHECKING(
[whether inode_owner_or_capable() takes user_ns])
ZFS_LINUX_TEST_RESULT([inode_owner_or_capable_idmapped], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_INODE_OWNER_OR_CAPABLE_IDMAPPED, 1,
[inode_owner_or_capable() takes user_ns])
],[
ZFS_LINUX_TEST_ERROR([capability])
])
])
])
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