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migration: convert savevm to use QIOChannel for writing to files

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Convert the exec savevm code to use QIOChannel and QEMUFileChannel,
instead of the stdio APIs.

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1461751518-12128-19-git-send-email-berrange@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
This commit is contained in:
Daniel P. Berrange 2016-04-27 11:05:08 +01:00 • committed by Amit Shah
parent 6ddd2d76ca
commit 8925839f00
3 changed files with 17 additions and 6 deletions
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8
migration/savevm.c
View file

@ -52,6 +52,7 @@
#include "block/qapi.h"
#include "qemu/cutils.h"
#include "io/channel-buffer.h"
#include "io/channel-file.h"
#ifndef ETH_P_RARP
#define ETH_P_RARP 0x8035
@ -2046,6 +2047,7 @@ void hmp_savevm(Monitor *mon, const QDict *qdict)
void qmp_xen_save_devices_state(const char *filename, Error **errp)
{
QEMUFile *f;
QIOChannelFile *ioc;
int saved_vm_running;
int ret;
@ -2053,11 +2055,11 @@ void qmp_xen_save_devices_state(const char *filename, Error **errp)
vm_stop(RUN_STATE_SAVE_VM);
global_state_store_running();
f = qemu_fopen(filename, "wb");
if (!f) {
error_setg_file_open(errp, errno, filename);
ioc = qio_channel_file_new_path(filename, O_WRONLY | O_CREAT, 0660, errp);
if (!ioc) {
goto the_end;
}
f = qemu_fopen_channel_output(QIO_CHANNEL(ioc));
ret = qemu_save_device_state(f);
qemu_fclose(f);
if (ret < 0) {