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Re: [Qemu-devel] [PATCH v4 06/11] savevm: add error parameter to qemu_sa
From: |
Markus Armbruster |
Subject: |
Re: [Qemu-devel] [PATCH v4 06/11] savevm: add error parameter to qemu_savevm_state() |
Date: |
Tue, 09 Apr 2013 16:00:17 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.1 (gnu/linux) |
Pavel Hrdina <address@hidden> writes:
> Signed-off-by: Pavel Hrdina <address@hidden>
> Reviewed-by: Eric Blake <address@hidden>
> ---
> savevm.c | 12 ++++++------
> 1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/savevm.c b/savevm.c
> index 7598934..3c1ac9e 100644
> --- a/savevm.c
> +++ b/savevm.c
> @@ -1910,7 +1910,7 @@ void qemu_savevm_state_cancel(void)
> }
> }
>
> -static int qemu_savevm_state(QEMUFile *f)
> +static int qemu_savevm_state(QEMUFile *f, Error **errp)
> {
> int ret;
> MigrationParams params = {
> @@ -1918,23 +1918,23 @@ static int qemu_savevm_state(QEMUFile *f)
> .shared = 0
> };
>
> - if (qemu_savevm_state_blocked(NULL)) {
> + if (qemu_savevm_state_blocked(errp)) {
> return -EINVAL;
> }
>
> qemu_mutex_unlock_iothread();
> - qemu_savevm_state_begin(f, ¶ms, NULL);
> + qemu_savevm_state_begin(f, ¶ms, errp);
> qemu_mutex_lock_iothread();
>
> while (qemu_file_get_error(f) == 0) {
> - if (qemu_savevm_state_iterate(f, NULL) > 0) {
> + if (qemu_savevm_state_iterate(f, errp) > 0) {
> break;
> }
> }
>
> ret = qemu_file_get_error(f);
> if (ret == 0) {
> - qemu_savevm_state_complete(f, NULL);
> + qemu_savevm_state_complete(f, errp);
> ret = qemu_file_get_error(f);
> }
> if (ret != 0) {
> @@ -2321,7 +2321,7 @@ void do_savevm(Monitor *mon, const QDict *qdict)
> monitor_printf(mon, "Could not open VM state file\n");
> goto the_end;
> }
> - ret = qemu_savevm_state(f);
> + ret = qemu_savevm_state(f, NULL);
> vm_state_size = qemu_ftell(f);
> qemu_fclose(f);
> if (ret < 0) {
monitor_printf(mon, "Error %d while writing VM\n", ret);
goto the_end;
}
First you go all the trouble to create detailed error reports deep down
in savevm.c, then you ignore them, and simply report (numeric!) errno
instead :)
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