[pve-devel] [RFC qemu 07/23] PVE backup: get device info: allow caller to specify filter for which devices use fleecing

[Fiona Ebner]

For providing snapshot-access to external backup providers, EFI and
TPM also need an associated fleecing image. The new caller will thus
need a different filter.

Signed-off-by: Fiona Ebner <f.ebner at proxmox.com>
---
 pve-backup.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/pve-backup.c b/pve-backup.c
index e8031bb89c..d0593fc581 100644
--- a/pve-backup.c
+++ b/pve-backup.c
@@ -717,7 +717,7 @@ static void create_backup_jobs_bh(void *opaque) {
 /*
  * EFI disk and TPM state are small and it's just not worth setting up fleecing for them.
  */
-static bool device_uses_fleecing(const char *device_id)
+static bool fleecing_no_efi_tpm(const char *device_id)
 {
     return strncmp(device_id, "drive-efidisk", 13) && strncmp(device_id, "drive-tpmstate", 14);
 }
@@ -729,7 +729,7 @@ static bool device_uses_fleecing(const char *device_id)
  */
 static GList coroutine_fn GRAPH_RDLOCK *get_device_info(
     const char *devlist,
-    bool fleecing,
+    bool (*device_uses_fleecing)(const char*),
     Error **errp)
 {
     gchar **devs = NULL;
@@ -755,7 +755,7 @@ static GList coroutine_fn GRAPH_RDLOCK *get_device_info(
             di->bs = bs;
             di->device_name = g_strdup(bdrv_get_device_name(bs));
 
-            if (fleecing && device_uses_fleecing(*d)) {
+            if (device_uses_fleecing && device_uses_fleecing(*d)) {
                 g_autofree gchar *fleecing_devid = g_strconcat(*d, "-fleecing", NULL);
                 BlockBackend *fleecing_blk = blk_by_name(fleecing_devid);
                 if (!fleecing_blk) {
@@ -858,7 +858,8 @@ UuidInfo coroutine_fn *qmp_backup(
     format = has_format ? format : BACKUP_FORMAT_VMA;
 
     bdrv_graph_co_rdlock();
-    di_list = get_device_info(devlist, has_fleecing && fleecing, &local_err);
+    di_list = get_device_info(devlist, (has_fleecing && fleecing) ? fleecing_no_efi_tpm : NULL,
+                              &local_err);
     bdrv_graph_co_rdunlock();
     if (local_err) {
         error_propagate(errp, local_err);
-- 
2.39.2