[src/trunk]: src/sys/dev/dm dm: Remove unneeded dm_get_version_ioctl()

[tkusumi <tkusumi%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/7c91c0ce0da3
branches:  trunk
changeset: 967327:7c91c0ce0da3
user:      tkusumi <tkusumi%NetBSD.org@localhost>
date:      Thu Dec 05 15:52:39 2019 +0000

description:
dm: Remove unneeded dm_get_version_ioctl()

"version" is implemented and handled in userspace,
hence dm ioctl doesn't need to support it.

taken-from: DragonFlyBSD

diffstat:

 sys/dev/dm/device-mapper.c |   8 +++++---
 sys/dev/dm/dm.h            |   3 +--
 sys/dev/dm/dm_ioctl.c      |  15 ++-------------
 3 files changed, 8 insertions(+), 18 deletions(-)

diffs (82 lines):

diff -r 59c264741486 -r 7c91c0ce0da3 sys/dev/dm/device-mapper.c
--- a/sys/dev/dm/device-mapper.c        Thu Dec 05 10:25:41 2019 +0000
+++ b/sys/dev/dm/device-mapper.c        Thu Dec 05 15:52:39 2019 +0000
@@ -1,4 +1,4 @@
-/*        $NetBSD: device-mapper.c,v 1.44 2019/12/04 16:55:30 tkusumi Exp $ */
+/*        $NetBSD: device-mapper.c,v 1.45 2019/12/05 15:52:39 tkusumi Exp $ */
 
 /*
  * Copyright (c) 2010 The NetBSD Foundation, Inc.
@@ -134,7 +134,7 @@
        int  (*fn)(prop_dictionary_t);
        int  allowed;
 } cmd_fn[] = {
-       { .cmd = "version", .fn = dm_get_version_ioctl,   .allowed = 1 },
+       { .cmd = "version", .fn = NULL,                   .allowed = 1 },
        { .cmd = "targets", .fn = dm_list_versions_ioctl, .allowed = 1 },
        { .cmd = "create",  .fn = dm_dev_create_ioctl,    .allowed = 0 },
        { .cmd = "info",    .fn = dm_dev_status_ioctl,    .allowed = 1 },
@@ -413,7 +413,9 @@
        if (cmd_fn[i].cmd == NULL)
                return EINVAL;
 
-       aprint_debug("ioctl %s called\n", cmd_fn[i].cmd);
+       aprint_debug("ioctl %s called %p\n", cmd_fn[i].cmd, cmd_fn[i].fn);
+       if (cmd_fn[i].fn == NULL)
+               return 0;
        r = cmd_fn[i].fn(dm_dict);
 
        return r;
diff -r 59c264741486 -r 7c91c0ce0da3 sys/dev/dm/dm.h
--- a/sys/dev/dm/dm.h   Thu Dec 05 10:25:41 2019 +0000
+++ b/sys/dev/dm/dm.h   Thu Dec 05 15:52:39 2019 +0000
@@ -1,4 +1,4 @@
-/*        $NetBSD: dm.h,v 1.32 2019/12/04 16:54:03 tkusumi Exp $      */
+/*        $NetBSD: dm.h,v 1.33 2019/12/05 15:52:39 tkusumi Exp $      */
 
 /*
  * Copyright (c) 2008 The NetBSD Foundation, Inc.
@@ -251,7 +251,6 @@
 int dm_dev_suspend_ioctl(prop_dictionary_t);
 
 int dm_check_version(prop_dictionary_t);
-int dm_get_version_ioctl(prop_dictionary_t);
 int dm_list_versions_ioctl(prop_dictionary_t);
 
 int dm_table_clear_ioctl(prop_dictionary_t);
diff -r 59c264741486 -r 7c91c0ce0da3 sys/dev/dm/dm_ioctl.c
--- a/sys/dev/dm/dm_ioctl.c     Thu Dec 05 10:25:41 2019 +0000
+++ b/sys/dev/dm/dm_ioctl.c     Thu Dec 05 15:52:39 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: dm_ioctl.c,v 1.37 2019/12/04 15:31:12 tkusumi Exp $      */
+/* $NetBSD: dm_ioctl.c,v 1.38 2019/12/05 15:52:39 tkusumi Exp $      */
 
 /*
  * Copyright (c) 2008 The NetBSD Foundation, Inc.
@@ -29,7 +29,7 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: dm_ioctl.c,v 1.37 2019/12/04 15:31:12 tkusumi Exp $");
+__KERNEL_RCSID(0, "$NetBSD: dm_ioctl.c,v 1.38 2019/12/05 15:52:39 tkusumi Exp $");
 
 /*
  * Locking is used to synchronise between ioctl calls and between dm_table's
@@ -161,17 +161,6 @@
 }
 
 /*
- * Get version ioctl call I do it as default therefore this
- * function is unused now.
- */
-int
-dm_get_version_ioctl(prop_dictionary_t dm_dict)
-{
-
-       return 0;
-}
-
-/*
  * Get list of all available targets from global
  * target list and sent them back to libdevmapper.
  */