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hmp: Add nbd_server_remove to mirror QMP command 

Since everything else about the nbd-server-* QMP commands is
accessible from HMP, we might as well make removing an export
available as well.  For now, I went with a bool flag rather
than a mode string for choosing between safe (default) and
hard modes.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20180125144557.25502-1-eblake@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Eric Blake 2018-01-25 08:45:57 -06:00
parent 2dadedce2b
commit 08fb10a729
3 changed files with 29 additions and 3 deletions
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17
hmp-commands.hx
View File

@ -1565,6 +1565,23 @@ Export a block device through QEMU's NBD server, which must be started
beforehand with @command{nbd_server_start}. The @option{-w} option makes the beforehand with @command{nbd_server_start}. The @option{-w} option makes the
exported device writable too. The export name is controlled by @var{name}, exported device writable too. The export name is controlled by @var{name},
defaulting to @var{device}. defaulting to @var{device}.
ETEXI
{
.name = "nbd_server_remove",
.args_type = "force:-f,name:s",
.params = "nbd_server_remove [-f] name",
.help = "remove an export previously exposed via NBD",
.cmd = hmp_nbd_server_remove,
},
STEXI
@item nbd_server_remove [-f] @var{name}
@findex nbd_server_remove
Stop exporting a block device through QEMU's NBD server, which was
previously started with @command{nbd_server_add}. The @option{-f}
option forces the server to drop the export immediately even if
clients are connected; otherwise the command fails unless there are no
clients.
ETEXI ETEXI
{ {

14
hmp.c
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@ -2226,10 +2226,18 @@ void hmp_nbd_server_add(Monitor *mon, const QDict *qdict)
Error *local_err = NULL; Error *local_err = NULL;
qmp_nbd_server_add(device, !!name, name, true, writable, &local_err); qmp_nbd_server_add(device, !!name, name, true, writable, &local_err);
hmp_handle_error(mon, &local_err);
}
if (local_err != NULL) { void hmp_nbd_server_remove(Monitor *mon, const QDict *qdict)
hmp_handle_error(mon, &local_err); {
} const char *name = qdict_get_str(qdict, "name");
bool force = qdict_get_try_bool(qdict, "force", false);
Error *err = NULL;
/* Rely on NBD_SERVER_REMOVE_MODE_SAFE being the default */
qmp_nbd_server_remove(name, force, NBD_SERVER_REMOVE_MODE_HARD, &err);
hmp_handle_error(mon, &err);
} }
void hmp_nbd_server_stop(Monitor *mon, const QDict *qdict) void hmp_nbd_server_stop(Monitor *mon, const QDict *qdict)

1
hmp.h
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@ -101,6 +101,7 @@ void hmp_sendkey(Monitor *mon, const QDict *qdict);
void hmp_screendump(Monitor *mon, const QDict *qdict); void hmp_screendump(Monitor *mon, const QDict *qdict);
void hmp_nbd_server_start(Monitor *mon, const QDict *qdict); void hmp_nbd_server_start(Monitor *mon, const QDict *qdict);
void hmp_nbd_server_add(Monitor *mon, const QDict *qdict); void hmp_nbd_server_add(Monitor *mon, const QDict *qdict);
void hmp_nbd_server_remove(Monitor *mon, const QDict *qdict);
void hmp_nbd_server_stop(Monitor *mon, const QDict *qdict); void hmp_nbd_server_stop(Monitor *mon, const QDict *qdict);
void hmp_chardev_add(Monitor *mon, const QDict *qdict); void hmp_chardev_add(Monitor *mon, const QDict *qdict);
void hmp_chardev_change(Monitor *mon, const QDict *qdict); void hmp_chardev_change(Monitor *mon, const QDict *qdict);