dissect: show intended architecture of a disk image

We already determine the architecture of disk images and make a choice,
and store it per partition. Let's make this accessible globally.

2 files changed, 16 insertions, 0 deletions

diff --git a/src/shared/dissect-image.c b/src/shared/dissect-image.c
index b20e21cce2..9636fd8d48 100644
--- a/src/shared/dissect-image.c
+++ b/src/shared/dissect-image.c
@@ -3156,6 +3156,20 @@ finish:
         return r;
 }
 
+Architecture dissected_image_architecture(DissectedImage *img) {
+        assert(img);
+
+        if (img->partitions[PARTITION_ROOT].found &&
+            img->partitions[PARTITION_ROOT].architecture >= 0)
+                return img->partitions[PARTITION_ROOT].architecture;
+
+        if (img->partitions[PARTITION_USR].found &&
+            img->partitions[PARTITION_USR].architecture >= 0)
+                return img->partitions[PARTITION_USR].architecture;
+
+        return _ARCHITECTURE_INVALID;
+}
+
 int dissect_loop_device(
                 LoopDevice *loop,
                 const VeritySettings *verity,
diff --git a/src/shared/dissect-image.h b/src/shared/dissect-image.h
index 3efe784ee9..6b90895216 100644
--- a/src/shared/dissect-image.h
+++ b/src/shared/dissect-image.h
@@ -160,6 +160,8 @@ int dissected_image_mount_and_warn(DissectedImage *m, const char *where, uid_t u
 
 int dissected_image_acquire_metadata(DissectedImage *m, DissectImageFlags extra_flags);
 
+Architecture dissected_image_architecture(DissectedImage *m);
+
 DecryptedImage* decrypted_image_ref(DecryptedImage *p);
 DecryptedImage* decrypted_image_unref(DecryptedImage *p);
 DEFINE_TRIVIAL_CLEANUP_FUNC(DecryptedImage*, decrypted_image_unref);