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block: dump snapshot and image info to specified output

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bdrv_snapshot_dump() and bdrv_image_info_dump() do not dump to a buffer now,
some internal buffers are still used for format control, which have no
chance to be truncated. As a result, these two functions have no more issue
of truncation, and they can be used by both qemu and qemu-img with correct
parameter specified.

Signed-off-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Wenchao Xia 2013-05-25 11:09:45 +08:00 • committed by Kevin Wolf
parent f364ec65b5
commit 5b91704469
4 changed files with 49 additions and 39 deletions
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7
savevm.c
View file

@ -2540,7 +2540,6 @@ void do_info_snapshots(Monitor *mon, const QDict *qdict)
int nb_sns, i, ret, available;
int total;
int *available_snapshots;
char buf[256];
bs = find_vmstate_bs();
if (!bs) {
@ -2583,10 +2582,12 @@ void do_info_snapshots(Monitor *mon, const QDict *qdict)
}
if (total > 0) {
monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL));
bdrv_snapshot_dump((fprintf_function)monitor_printf, mon, NULL);
monitor_printf(mon, "\n");
for (i = 0; i < total; i++) {
sn = &sn_tab[available_snapshots[i]];
monitor_printf(mon, "%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn));
bdrv_snapshot_dump((fprintf_function)monitor_printf, mon, sn);
monitor_printf(mon, "\n");
}
} else {
monitor_printf(mon, "There is no suitable snapshot available\n");