[Qemu-block] [PATCH v4 15/26] qemu-img/qemu-io: don't prompt for passwords if not required

[Daniel P. Berrange]

The qemu-img/qemu-io tools prompt for disk encryption passwords
regardless of whether any are actually required. Adding a check
on bdrv_key_required() avoids this prompt for disk formats which
have been converted to the QCryptoSecret APIs.

This is just a temporary hack to ensure the block I/O tests
continue to work after each patch, since the last patch will
completely delete all the password prompting code.

Reviewed-by: Eric Blake <address@hidden>
Signed-off-by: Daniel P. Berrange <address@hidden>
---
 qemu-img.c | 3 ++-
 qemu-io.c  | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/qemu-img.c b/qemu-img.c
index e91100e..b9a501c 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -230,7 +230,8 @@ static int img_open_password(BlockBackend *blk, const char 
*filename,
     char password[256];
 
     bs = blk_bs(blk);
-    if (bdrv_is_encrypted(bs) && !(flags & BDRV_O_NO_IO)) {
+    if (bdrv_is_encrypted(bs) && bdrv_key_required(bs) &&
+        !(flags & BDRV_O_NO_IO)) {
         qprintf(quiet, "Disk image '%s' is encrypted.\n", filename);
         if (qemu_read_password(password, sizeof(password)) < 0) {
             error_report("No password given");
diff --git a/qemu-io.c b/qemu-io.c
index 8c31257..d825723 100644
--- a/qemu-io.c
+++ b/qemu-io.c
@@ -69,7 +69,7 @@ static int openfile(char *name, int flags, QDict *opts)
     }
 
     bs = blk_bs(qemuio_blk);
-    if (bdrv_is_encrypted(bs)) {
+    if (bdrv_is_encrypted(bs) && bdrv_key_required(bs)) {
         char password[256];
         printf("Disk image '%s' is encrypted.\n", name);
         if (qemu_read_password(password, sizeof(password)) < 0) {
-- 
2.5.0