Fix indentation for storage conf XML

* virStorageEncryptionFormat is called from both
  virDomainDiskDefFormat and virStorageVolTargetDefFormat.  The proper
  indentation in the generated XML depends on the caller.  My earlier
  patch to fix the incorrect indentation for the domain XML broke the
  indentation for the storage XML.  This patch adopts Laine's
  suggestion of requring the caller of virStorageEncryptionFormat to
  provide an unsigned int with the number of spaces the output should
  be indented.  The patch modifies both callers to provide the
  additional argument.

* Add a regression test for the domain XML

* src/conf/domain_conf.c src/conf/storage_conf.c
  src/conf/storage_encryption_conf.c src/conf/storage_encryption_conf.h:
  change the indentation code
* tests/qemuxml2xmltest.c
  tests/qemuxml2argvdata/qemuxml2argv-encrypted-disk.args
  tests/qemuxml2argvdata/qemuxml2argv-encrypted-disk.xml: add a regression test

7 files changed, 44 insertions, 9 deletions

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 1504010fe..72f88c761 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -4958,7 +4958,7 @@ virDomainDiskDefFormat(virBufferPtr buf,
         virBufferEscapeString(buf, "      <serial>%s</serial>\n",
                               def->serial);
     if (def->encryption != NULL &&
-        virStorageEncryptionFormat(buf, def->encryption) < 0)
+        virStorageEncryptionFormat(buf, def->encryption, 6) < 0)
         return -1;
 
     if (virDomainDeviceInfoFormat(buf, &def->info, flags) < 0)
diff --git a/src/conf/storage_conf.c b/src/conf/storage_conf.c
index 6467c73cb..6218e0274 100644
--- a/src/conf/storage_conf.c
+++ b/src/conf/storage_conf.c
@@ -1169,7 +1169,7 @@ virStorageVolTargetDefFormat(virStorageVolOptionsPtr options,
     virBufferAddLit(buf,"    </permissions>\n");
 
     if (def->encryption != NULL &&
-        virStorageEncryptionFormat(buf, def->encryption) < 0)
+        virStorageEncryptionFormat(buf, def->encryption, 4) < 0)
         return -1;
 
     virBufferVSprintf(buf, "  </%s>\n", type);
diff --git a/src/conf/storage_encryption_conf.c b/src/conf/storage_encryption_conf.c
index 7f68d67da..7a64050c9 100644
--- a/src/conf/storage_encryption_conf.c
+++ b/src/conf/storage_encryption_conf.c
@@ -215,7 +215,8 @@ virStorageEncryptionParseNode(xmlDocPtr xml, xmlNodePtr root)
 
 static int
 virStorageEncryptionSecretFormat(virBufferPtr buf,
-                                 virStorageEncryptionSecretPtr secret)
+                                 virStorageEncryptionSecretPtr secret,
+                                 unsigned int indent)
 {
     const char *type;
     char uuidstr[VIR_UUID_STRING_BUFLEN];
@@ -228,13 +229,15 @@ virStorageEncryptionSecretFormat(virBufferPtr buf,
     }
 
     virUUIDFormat(secret->uuid, uuidstr);
-    virBufferVSprintf(buf, "        <secret type='%s' uuid='%s'/>\n", type, uuidstr);
+    virBufferVSprintf(buf, "%*s<secret type='%s' uuid='%s'/>\n",
+                      indent, "", type, uuidstr);
     return 0;
 }
 
 int
 virStorageEncryptionFormat(virBufferPtr buf,
-                           virStorageEncryptionPtr enc)
+                           virStorageEncryptionPtr enc,
+                           unsigned int indent)
 {
     const char *format;
     size_t i;
@@ -245,14 +248,15 @@ virStorageEncryptionFormat(virBufferPtr buf,
                               "%s", _("unexpected encryption format"));
         return -1;
     }
-    virBufferVSprintf(buf, "      <encryption format='%s'>\n", format);
+    virBufferVSprintf(buf, "%*s<encryption format='%s'>\n",
+                      indent, "", format);
 
     for (i = 0; i < enc->nsecrets; i++) {
-        if (virStorageEncryptionSecretFormat(buf, enc->secrets[i]) < 0)
+        if (virStorageEncryptionSecretFormat(buf, enc->secrets[i], indent + 2) < 0)
             return -1;
     }
 
-    virBufferAddLit(buf, "      </encryption>\n");
+    virBufferVSprintf(buf, "%*s</encryption>\n", indent, "");
 
     return 0;
 }
diff --git a/src/conf/storage_encryption_conf.h b/src/conf/storage_encryption_conf.h
index fd435fca8..83092554c 100644
--- a/src/conf/storage_encryption_conf.h
+++ b/src/conf/storage_encryption_conf.h
@@ -67,7 +67,8 @@ void virStorageEncryptionFree(virStorageEncryptionPtr enc);
 virStorageEncryptionPtr virStorageEncryptionParseNode(xmlDocPtr xml,
                                                       xmlNodePtr root);
 int virStorageEncryptionFormat(virBufferPtr buf,
-                               virStorageEncryptionPtr enc);
+                               virStorageEncryptionPtr enc,
+                               unsigned int indent);
 
 /* A helper for VIR_STORAGE_ENCRYPTION_FORMAT_QCOW */
 enum {
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-encrypted-disk.args b/tests/qemuxml2argvdata/qemuxml2argv-encrypted-disk.args
new file mode 100644
index 000000000..d8c105355
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-encrypted-disk.args
@@ -0,0 +1 @@
+LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin HOME=/root USER=root LOGNAME=root /usr/bin/qemu -S -M fedora-13 -m 1024 -smp 1,sockets=1,cores=1,threads=1 -name encryptdisk -uuid 496898a6-e6ff-f7c8-5dc2-3cf410945ee9 -nographic -nodefaults -chardev socket,id=monitor,path=//var/lib/libvirt/qemu/encryptdisk.monitor,server,nowait -mon chardev=monitor,mode=readline -rtc base=utc -no-acpi -boot c -drive file=/storage/guest_disks/encryptdisk,if=none,id=drive-virtio-disk0,boot=on,format=qcow2 -device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0 -usb -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-encrypted-disk.xml b/tests/qemuxml2argvdata/qemuxml2argv-encrypted-disk.xml
new file mode 100644
index 000000000..cb7b06d3d
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-encrypted-disk.xml
@@ -0,0 +1,27 @@
+<domain type='kvm'>
+  <name>encryptdisk</name>
+  <uuid>496898a6-e6ff-f7c8-5dc2-3cf410945ee9</uuid>
+  <memory>1048576</memory>
+  <currentMemory>524288</currentMemory>
+  <vcpu>1</vcpu>
+  <os>
+    <type arch='i686' machine='fedora-13'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu</emulator>
+    <disk type='file' device='disk'>
+      <driver name='qemu' type='qcow2'/>
+      <source file='/storage/guest_disks/encryptdisk'/>
+      <target dev='vda' bus='virtio'/>
+      <encryption format='qcow'>
+        <secret type='passphrase' uuid='0a81f5b2-8403-7b23-c8d6-21ccc2f80d6f'/>
+      </encryption>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
+    </disk>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
index 1ac6edc24..69829b1b7 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -138,6 +138,8 @@ mymain(int argc, char **argv)
     DO_TEST("hostdev-usb-address");
     DO_TEST("hostdev-pci-address");
 
+    DO_TEST("encrypted-disk");
+
     virCapabilitiesFree(driver.caps);
 
     return (ret==0 ? EXIT_SUCCESS : EXIT_FAILURE);