From 80dd5aff1b3273e0ee5bec379df62647c0b39c1c Mon Sep 17 00:00:00 2001 From: "Denis V. Lunev" Date: Wed, 13 Apr 2022 01:18:46 +0300 Subject: [PATCH] block: add 'force' parameter to 'blockdev-change-medium' command MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 'blockdev-change-medium' is a convinient wrapper for the following sequence of commands: * blockdev-open-tray * blockdev-remove-medium * blockdev-insert-medium * blockdev-close-tray and should be used f.e. to change ISO image inside the CD-ROM tray. Though the guest could lock the tray and some linux guests like CentOS 8.5 actually does that. In this case the execution if this command results in the error like the following: Device 'scsi0-0-1-0' is locked and force was not specified, wait for tray to open and try again. This situation is could be resolved 'blockdev-open-tray' by passing flag 'force' inside. Thus is seems reasonable to add the same capability for 'blockdev-change-medium' too. Signed-off-by: Denis V. Lunev Reviewed-by: Vladimir Sementsov-Ogievskiy Acked-by: "Dr. David Alan Gilbert" CC: Kevin Wolf CC: Hanna Reitz CC: Eric Blake CC: Markus Armbruster Message-Id: <20220412221846.280723-1-den@openvz.org> Reviewed-by: Daniel P. Berrangé Signed-off-by: Hanna Reitz --- block/qapi-sysemu.c | 3 ++- hmp-commands.hx | 11 +++++++---- monitor/hmp-cmds.c | 4 +++- qapi/block.json | 6 ++++++ ui/cocoa.m | 1 + 5 files changed, 19 insertions(+), 6 deletions(-) diff --git a/block/qapi-sysemu.c b/block/qapi-sysemu.c index 8498402ad4..680c7ee342 100644 --- a/block/qapi-sysemu.c +++ b/block/qapi-sysemu.c @@ -318,6 +318,7 @@ void qmp_blockdev_change_medium(bool has_device, const char *device, bool has_id, const char *id, const char *filename, bool has_format, const char *format, + bool has_force, bool force, bool has_read_only, BlockdevChangeReadOnlyMode read_only, Error **errp) @@ -380,7 +381,7 @@ void qmp_blockdev_change_medium(bool has_device, const char *device, rc = do_open_tray(has_device ? device : NULL, has_id ? id : NULL, - false, &err); + force, &err); if (rc && rc != -ENOSYS) { error_propagate(errp, err); goto fail; diff --git a/hmp-commands.hx b/hmp-commands.hx index dd4006d355..34947d6d20 100644 --- a/hmp-commands.hx +++ b/hmp-commands.hx @@ -202,9 +202,9 @@ ERST { .name = "change", - .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", + .args_type = "device:B,force:-f,target:F,arg:s?,read-only-mode:s?", + .params = "device [-f] filename [format [read-only-mode]]", + .help = "change a removable medium, optional format, use -f to force the operation", .cmd = hmp_change, }, @@ -212,11 +212,14 @@ SRST ``change`` *device* *setting* Change the configuration of a device. - ``change`` *diskdevice* *filename* [*format* [*read-only-mode*]] + ``change`` *diskdevice* [-f] *filename* [*format* [*read-only-mode*]] Change the medium for a removable disk device to point to *filename*. eg:: (qemu) change ide1-cd0 /path/to/some.iso + ``-f`` + forces the operation even if the guest has locked the tray. + *format* is optional. *read-only-mode* may be used to change the read-only status of the device. diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c index 634968498b..d8b98bed6c 100644 --- a/monitor/hmp-cmds.c +++ b/monitor/hmp-cmds.c @@ -1472,6 +1472,7 @@ void hmp_change(Monitor *mon, const QDict *qdict) 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"); + bool force = qdict_get_try_bool(qdict, "force", false); BlockdevChangeReadOnlyMode read_only_mode = 0; Error *err = NULL; @@ -1508,7 +1509,8 @@ void hmp_change(Monitor *mon, const QDict *qdict) } qmp_blockdev_change_medium(true, device, false, NULL, target, - !!arg, arg, !!read_only, read_only_mode, + !!arg, arg, true, force, + !!read_only, read_only_mode, &err); } diff --git a/qapi/block.json b/qapi/block.json index 82fcf2c914..3f100d4887 100644 --- a/qapi/block.json +++ b/qapi/block.json @@ -326,6 +326,11 @@ # @read-only-mode: change the read-only mode of the device; defaults # to 'retain' # +# @force: if false (the default), an eject request through blockdev-open-tray +# will be sent to the guest if it has locked the tray (and the tray +# will not be opened immediately); if true, the tray will be opened +# regardless of whether it is locked. (since 7.1) +# # Features: # @deprecated: Member @device is deprecated. Use @id instead. # @@ -367,6 +372,7 @@ '*id': 'str', 'filename': 'str', '*format': 'str', + '*force': 'bool', '*read-only-mode': 'BlockdevChangeReadOnlyMode' } } diff --git a/ui/cocoa.m b/ui/cocoa.m index 68bff4ff37..09a62817f2 100644 --- a/ui/cocoa.m +++ b/ui/cocoa.m @@ -1531,6 +1531,7 @@ static CGEventRef handleTapEvent(CGEventTapProxy proxy, CGEventType type, CGEven [file cStringUsingEncoding: NSASCIIStringEncoding], true, "raw", + true, false, false, 0, &err); }); -- 2.39.2