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dm: introduce DM_GET_TARGET_VERSION

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Adds support for the DM_GET_TARGET_VERSION to dmsetup.
It introduces a new comman "target-version" that will accept list
of targets and print their version.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
(cherry picked from commit 667b33dd3b)

Conflicts:
	device_mapper/all.h
	device_mapper/ioctl/libdm-iface.c
	device_mapper/misc/dm-ioctl.h
This commit is contained in:
Mikulas Patocka 2019-09-16 05:58:10 -04:00 committed by Marian Csontos
parent f50af80199
commit 889c88e9da
4 changed files with 36 additions and 1 deletions
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3
libdm/ioctl/libdm-iface.c
View File

@ -118,6 +118,9 @@ static struct cmd_data _cmd_data_v4[] = {
#ifdef DM_DEV_ARM_POLL
{"armpoll", DM_DEV_ARM_POLL, {4, 36, 0}},
#endif
#ifdef DM_GET_TARGET_VERSION
{"target-version", DM_GET_TARGET_VERSION, {4, 41, 0}},
#endif
};
/* *INDENT-ON* */

4
libdm/libdevmapper.h
View File

@ -121,7 +121,9 @@ enum {
DM_DEVICE_SET_GEOMETRY,
DM_DEVICE_ARM_POLL
DM_DEVICE_ARM_POLL,
DM_GET_TARGET_VERSION
};
/*

2
libdm/misc/dm-ioctl.h
View File

@ -244,6 +244,7 @@ enum {
DM_TARGET_MSG_CMD,
DM_DEV_SET_GEOMETRY_CMD,
DM_DEV_ARM_POLL_CMD,
DM_GET_TARGET_VERSION_CMD,
};
#define DM_IOCTL 0xfd
@ -269,6 +270,7 @@ enum {
#define DM_TARGET_MSG _IOWR(DM_IOCTL, DM_TARGET_MSG_CMD, struct dm_ioctl)
#define DM_DEV_SET_GEOMETRY _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, struct dm_ioctl)
#define DM_GET_TARGET_VERSION _IOWR(DM_IOCTL, DM_GET_TARGET_VERSION_CMD, struct dm_ioctl)
#define DM_VERSION_MAJOR 4
#define DM_VERSION_MINOR 36

28
tools/dmsetup.c
View File

@ -2588,6 +2588,33 @@ out:
return r;
}
/* Show target names and their version numbers */
static int _target_version(CMD_ARGS)
{
int r = 0;
struct dm_task *dmt;
struct dm_versions *target;
if (!(dmt = dm_task_create(DM_GET_TARGET_VERSION)))
return_0;
if (!dm_task_set_name(dmt, argv[0]))
goto_out;
if (!_task_run(dmt))
goto_out;
target = dm_task_get_versions(dmt);
printf("%-16s v%d.%d.%d\n", target->name, target->version[0],
target->version[1], target->version[2]);
r = 1;
out:
dm_task_destroy(dmt);
return r;
}
static int _info(CMD_ARGS)
{
int r = 0;
@ -6240,6 +6267,7 @@ static struct command _dmsetup_commands[] = {
{"udevcomplete", "<cookie>", 1, 1, 0, 0, _udevcomplete},
{"udevcomplete_all", "[<age_in_minutes>]", 0, 1, 0, 0, _udevcomplete_all},
{"udevcookies", "", 0, 0, 0, 0, _udevcookies},
{"target-version", "[<target>...]", 1, -1, 1, 0, _target_version},
{"targets", "", 0, 0, 0, 0, _targets},
{"version", "", 0, 0, 0, 0, _version},
{"setgeometry", "<device> <cyl> <head> <sect> <start>", 5, 5, 0, 0, _setgeometry},