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dnl #
dnl # Linux 6.5 removes register_sysctl_table
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_REGISTER_SYSCTL_TABLE], [
ZFS_LINUX_TEST_SRC([has_register_sysctl_table], [
#include <linux/sysctl.h>
static struct ctl_table dummy_table[] = {
{}
};
],[
struct ctl_table_header *h
__attribute((unused)) = register_sysctl_table(dummy_table);
])
])
AC_DEFUN([ZFS_AC_KERNEL_REGISTER_SYSCTL_TABLE], [
AC_MSG_CHECKING([whether register_sysctl_table exists])
ZFS_LINUX_TEST_RESULT([has_register_sysctl_table], [
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_REGISTER_SYSCTL_TABLE, 1,
[register_sysctl_table exists])
],[
AC_MSG_RESULT([no])
])
])
dnl #
dnl # Linux 6.11 register_sysctl() enforces that sysctl tables no longer
dnl # supply a sentinel end-of-table element. 6.6 introduces
dnl # register_sysctl_sz() to enable callers to choose, so we use it if
dnl # available for backward compatibility.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_REGISTER_SYSCTL_SZ], [
ZFS_LINUX_TEST_SRC([has_register_sysctl_sz], [
#include <linux/sysctl.h>
],[
struct ctl_table test_table[] __attribute__((unused)) = {{}};
register_sysctl_sz("", test_table, 0);
])
])
AC_DEFUN([ZFS_AC_KERNEL_REGISTER_SYSCTL_SZ], [
AC_MSG_CHECKING([whether register_sysctl_sz exists])
ZFS_LINUX_TEST_RESULT([has_register_sysctl_sz], [
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_REGISTER_SYSCTL_SZ, 1,
[register_sysctl_sz exists])
],[
AC_MSG_RESULT([no])
])
])
dnl #
dnl # Linux 6.11 makes const the ctl_table arg of proc_handler
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_PROC_HANDLER_CTL_TABLE_CONST], [
ZFS_LINUX_TEST_SRC([has_proc_handler_ctl_table_const], [
#include <linux/sysctl.h>
static int test_handler(
const struct ctl_table *ctl __attribute((unused)),
int write __attribute((unused)),
void *buffer __attribute((unused)),
size_t *lenp __attribute((unused)),
loff_t *ppos __attribute((unused)))
{
return (0);
}
], [
proc_handler *ph __attribute((unused)) =
&test_handler;
])
])
AC_DEFUN([ZFS_AC_KERNEL_PROC_HANDLER_CTL_TABLE_CONST], [
AC_MSG_CHECKING([whether proc_handler ctl_table arg is const])
ZFS_LINUX_TEST_RESULT([has_proc_handler_ctl_table_const], [
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_PROC_HANDLER_CTL_TABLE_CONST, 1,
[proc_handler ctl_table arg is const])
], [
AC_MSG_RESULT([no])
])
])
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