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2633075e09
Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Rob Norris <robn@despairlabs.com> Sponsored-by: https://despairlabs.com/sponsor/ Closes #16400
87 lines
2.3 KiB
Plaintext
87 lines
2.3 KiB
Plaintext
dnl #
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dnl # Linux 6.5 removes register_sysctl_table
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_REGISTER_SYSCTL_TABLE], [
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ZFS_LINUX_TEST_SRC([has_register_sysctl_table], [
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#include <linux/sysctl.h>
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static struct ctl_table dummy_table[] = {
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{}
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};
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],[
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struct ctl_table_header *h
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__attribute((unused)) = register_sysctl_table(dummy_table);
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_REGISTER_SYSCTL_TABLE], [
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AC_MSG_CHECKING([whether register_sysctl_table exists])
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ZFS_LINUX_TEST_RESULT([has_register_sysctl_table], [
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AC_MSG_RESULT([yes])
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AC_DEFINE(HAVE_REGISTER_SYSCTL_TABLE, 1,
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[register_sysctl_table exists])
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],[
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AC_MSG_RESULT([no])
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])
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])
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dnl #
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dnl # Linux 6.11 register_sysctl() enforces that sysctl tables no longer
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dnl # supply a sentinel end-of-table element. 6.6 introduces
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dnl # register_sysctl_sz() to enable callers to choose, so we use it if
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dnl # available for backward compatibility.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_REGISTER_SYSCTL_SZ], [
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ZFS_LINUX_TEST_SRC([has_register_sysctl_sz], [
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#include <linux/sysctl.h>
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],[
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struct ctl_table test_table[] __attribute__((unused)) = {0};
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register_sysctl_sz("", test_table, 0);
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_REGISTER_SYSCTL_SZ], [
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AC_MSG_CHECKING([whether register_sysctl_sz exists])
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ZFS_LINUX_TEST_RESULT([has_register_sysctl_sz], [
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AC_MSG_RESULT([yes])
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AC_DEFINE(HAVE_REGISTER_SYSCTL_SZ, 1,
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[register_sysctl_sz exists])
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],[
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AC_MSG_RESULT([no])
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])
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])
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dnl #
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dnl # Linux 6.11 makes const the ctl_table arg of proc_handler
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_PROC_HANDLER_CTL_TABLE_CONST], [
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ZFS_LINUX_TEST_SRC([has_proc_handler_ctl_table_const], [
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#include <linux/sysctl.h>
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static int test_handler(
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const struct ctl_table *ctl __attribute((unused)),
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int write __attribute((unused)),
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void *buffer __attribute((unused)),
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size_t *lenp __attribute((unused)),
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loff_t *ppos __attribute((unused)))
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{
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return (0);
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}
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], [
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proc_handler *ph __attribute((unused)) =
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&test_handler;
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_PROC_HANDLER_CTL_TABLE_CONST], [
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AC_MSG_CHECKING([whether proc_handler ctl_table arg is const])
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ZFS_LINUX_TEST_RESULT([has_proc_handler_ctl_table_const], [
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AC_MSG_RESULT([yes])
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AC_DEFINE(HAVE_PROC_HANDLER_CTL_TABLE_CONST, 1,
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[proc_handler ctl_table arg is const])
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], [
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AC_MSG_RESULT([no])
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])
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])
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