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hmp: Add read-only-mode option to change command 

Expose the new read-only-mode option of 'blockdev-change-medium' for the
'change' HMP command.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Max Reitz 2015-10-26 21:39:18 +01:00 committed by Kevin Wolf
parent 39ff43d9e1
commit baead0abef
2 changed files with 38 additions and 4 deletions
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20
hmp-commands.hx
View File

@ -194,8 +194,8 @@ ETEXI
{
.name = "change",
.args_type = "device:B,target:F,arg:s?",
.params = "device filename [format]",
.args_type = "device:B,target:F,arg:s?,read-only-mode:s?",
.params = "device filename [format [read-only-mode]]",
.help = "change a removable medium, optional format",
.mhandler.cmd = hmp_change,
},
@ -206,7 +206,7 @@ STEXI
Change the configuration of a device.
@table @option
@item change @var{diskdevice} @var{filename} [@var{format}]
@item change @var{diskdevice} @var{filename} [@var{format} [@var{read-only-mode}]]
Change the medium for a removable disk device to point to @var{filename}. eg
@example
@ -215,6 +215,20 @@ Change the medium for a removable disk device to point to @var{filename}. eg
@var{format} is optional.
@var{read-only-mode} may be used to change the read-only status of the device.
It accepts the following values:
@table @var
@item retain
Retains the current status; this is the default.
@item read-only
Makes the device read-only.
@item read-write
Makes the device writable.
@end table
@item change vnc @var{display},@var{options}
Change the configuration of the VNC server. The valid syntax for @var{display}
and @var{options} are described at @ref{sec_invocation}. eg

22
hmp.c
View File

@ -27,6 +27,7 @@
#include "qapi/opts-visitor.h"
#include "qapi/qmp/qerror.h"
#include "qapi/string-output-visitor.h"
#include "qapi/util.h"
#include "qapi-visit.h"
#include "ui/console.h"
#include "block/qapi.h"
@ -1343,9 +1344,16 @@ void hmp_change(Monitor *mon, const QDict *qdict)
const char *device = qdict_get_str(qdict, "device");
const char *target = qdict_get_str(qdict, "target");
const char *arg = qdict_get_try_str(qdict, "arg");
const char *read_only = qdict_get_try_str(qdict, "read-only-mode");
BlockdevChangeReadOnlyMode read_only_mode = 0;
Error *err = NULL;
if (strcmp(device, "vnc") == 0) {
if (read_only) {
monitor_printf(mon,
"Parameter 'read-only-mode' is invalid for VNC\n");
return;
}
if (strcmp(target, "passwd") == 0 ||
strcmp(target, "password") == 0) {
if (!arg) {
@ -1355,7 +1363,19 @@ void hmp_change(Monitor *mon, const QDict *qdict)
}
qmp_change("vnc", target, !!arg, arg, &err);
} else {
qmp_blockdev_change_medium(device, target, !!arg, arg, false, 0, &err);
if (read_only) {
read_only_mode =
qapi_enum_parse(BlockdevChangeReadOnlyMode_lookup,
read_only, BLOCKDEV_CHANGE_READ_ONLY_MODE_MAX,
BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN, &err);
if (err) {
hmp_handle_error(mon, &err);
return;
}
}
qmp_blockdev_change_medium(device, target, !!arg, arg,
!!read_only, read_only_mode, &err);
if (err &&
error_get_class(err) == ERROR_CLASS_DEVICE_ENCRYPTED) {
error_free(err);