From 15bac0d54f78adb5e255155a69e56ab7f6d8c8ea Mon Sep 17 00:00:00 2001
From: Stefan Weil <sw@weilnetz.de>
Date: Thu, 17 Jan 2013 21:45:25 +0100
Subject: [PATCH] block: Use error code EMEDIUMTYPE for wrong format in some
 block drivers

This improves error reports for bochs, cow, qcow, qcow2, qed and vmdk
when a file with the wrong format is selected.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 block/bochs.c | 2 +-
 block/cow.c   | 2 +-
 block/qcow.c  | 2 +-
 block/qcow2.c | 2 +-
 block/qed.c   | 2 +-
 block/vmdk.c  | 4 ++--
 6 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/block/bochs.c b/block/bochs.c
index 1b1d9cdbe5..37375834e9 100644
--- a/block/bochs.c
+++ b/block/bochs.c
@@ -126,7 +126,7 @@ static int bochs_open(BlockDriverState *bs, int flags)
         strcmp(bochs.subtype, GROWING_TYPE) ||
 	((le32_to_cpu(bochs.version) != HEADER_VERSION) &&
 	(le32_to_cpu(bochs.version) != HEADER_V1))) {
-        goto fail;
+        return -EMEDIUMTYPE;
     }
 
     if (le32_to_cpu(bochs.version) == HEADER_V1) {
diff --git a/block/cow.c b/block/cow.c
index a33ce950d4..4baf9042fe 100644
--- a/block/cow.c
+++ b/block/cow.c
@@ -73,7 +73,7 @@ static int cow_open(BlockDriverState *bs, int flags)
     }
 
     if (be32_to_cpu(cow_header.magic) != COW_MAGIC) {
-        ret = -EINVAL;
+        ret = -EMEDIUMTYPE;
         goto fail;
     }
 
diff --git a/block/qcow.c b/block/qcow.c
index 4276610afd..a7135eea47 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -112,7 +112,7 @@ static int qcow_open(BlockDriverState *bs, int flags)
     be64_to_cpus(&header.l1_table_offset);
 
     if (header.magic != QCOW_MAGIC) {
-        ret = -EINVAL;
+        ret = -EMEDIUMTYPE;
         goto fail;
     }
     if (header.version != QCOW_VERSION) {
diff --git a/block/qcow2.c b/block/qcow2.c
index f6abff6111..7610e569e3 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -311,7 +311,7 @@ static int qcow2_open(BlockDriverState *bs, int flags)
     be32_to_cpus(&header.nb_snapshots);
 
     if (header.magic != QCOW_MAGIC) {
-        ret = -EINVAL;
+        ret = -EMEDIUMTYPE;
         goto fail;
     }
     if (header.version < 2 || header.version > 3) {
diff --git a/block/qed.c b/block/qed.c
index cf85d8f2b4..b8515e58b3 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -390,7 +390,7 @@ static int bdrv_qed_open(BlockDriverState *bs, int flags)
     qed_header_le_to_cpu(&le_header, &s->header);
 
     if (s->header.magic != QED_MAGIC) {
-        return -EINVAL;
+        return -EMEDIUMTYPE;
     }
     if (s->header.features & ~QED_FEATURE_MASK) {
         /* image uses unsupported feature bits */
diff --git a/block/vmdk.c b/block/vmdk.c
index 19298c2a3e..8333afb5e3 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -616,7 +616,7 @@ static int vmdk_open_sparse(BlockDriverState *bs,
             return vmdk_open_vmdk4(bs, file, flags);
             break;
         default:
-            return -EINVAL;
+            return -EMEDIUMTYPE;
             break;
     }
 }
@@ -718,7 +718,7 @@ static int vmdk_open_desc_file(BlockDriverState *bs, int flags,
     }
     buf[2047] = '\0';
     if (vmdk_parse_description(buf, "createType", ct, sizeof(ct))) {
-        return -EINVAL;
+        return -EMEDIUMTYPE;
     }
     if (strcmp(ct, "monolithicFlat") &&
         strcmp(ct, "twoGbMaxExtentSparse") &&