[pve-devel] [PATCH qemu] pbs: add master key support

[Fabian Grünbichler]

On February 10, 2021 12:05 pm, Stefan Reiter wrote:
> Patch looks good in general, but the added file does not follow our 
> formatting for the other patches. I'd prefer to keep them the same, or 
> at least applicable with 'git am'.
> 
> Since one of us is going to have to rebase anyway, I can also send along 
> a fixed up version with v2 of my 5.2 series if you want.

no objections from my side. sorry for not converting before sending (I 
used quilt to apply all patches)

> 
> On 08/02/2021 14:08, Fabian Grünbichler wrote:
>> this requires a new enough libproxmox-backup-qemu0, and allows querying
>> from the PVE side to avoid QMP calls with unsupported parameters.
>> 
>> Signed-off-by: Fabian Grünbichler <f.gruenbichler at proxmox.com>
>> ---
>> 
>> Notes:
>>      requires versioned build and runtime dep on libproxmox-backup-qemu with changed API for masterkey support
>> 
>>   .../pve/0059-pbs-backup-add-masterkey.patch   | 96 +++++++++++++++++++
>>   debian/patches/series                         |  1 +
>>   2 files changed, 97 insertions(+)
>>   create mode 100644 debian/patches/pve/0059-pbs-backup-add-masterkey.patch
>> 
>> diff --git a/debian/patches/pve/0059-pbs-backup-add-masterkey.patch b/debian/patches/pve/0059-pbs-backup-add-masterkey.patch
>> new file mode 100644
>> index 0000000..12fce05
>> --- /dev/null
>> +++ b/debian/patches/pve/0059-pbs-backup-add-masterkey.patch
>> @@ -0,0 +1,96 @@
>> +Index: qemu/pve-backup.c
>> +===================================================================
>> +--- qemu.orig/pve-backup.c
>> ++++ qemu/pve-backup.c
>> +@@ -539,6 +539,8 @@ typedef struct QmpBackupTask {
>> +     const char *keyfile;
>> +     bool has_key_password;
>> +     const char *key_password;
>> ++    bool has_master_keyfile;
>> ++    const char *master_keyfile;
>> +     bool has_backup_id;
>> +     const char *backup_id;
>> +     bool has_backup_time;
>> +@@ -710,6 +712,7 @@ static void coroutine_fn pvebackup_co_pr
>> +             task->has_password ? task->password : NULL,
>> +             task->has_keyfile ? task->keyfile : NULL,
>> +             task->has_key_password ? task->key_password : NULL,
>> ++            task->has_master_keyfile ? task->master_keyfile : NULL,
>> +             task->has_compress ? task->compress : true,
>> +             task->has_encrypt ? task->encrypt : task->has_keyfile,
>> +             task->has_fingerprint ? task->fingerprint : NULL,
>> +@@ -989,6 +992,7 @@ UuidInfo *qmp_backup(
>> +     bool has_password, const char *password,
>> +     bool has_keyfile, const char *keyfile,
>> +     bool has_key_password, const char *key_password,
>> ++    bool has_master_keyfile, const char *master_keyfile,
>> +     bool has_fingerprint, const char *fingerprint,
>> +     bool has_backup_id, const char *backup_id,
>> +     bool has_backup_time, int64_t backup_time,
>> +@@ -1009,6 +1013,8 @@ UuidInfo *qmp_backup(
>> +         .keyfile = keyfile,
>> +         .has_key_password = has_key_password,
>> +         .key_password = key_password,
>> ++        .has_master_keyfile = has_master_keyfile,
>> ++        .master_keyfile = master_keyfile,
>> +         .has_fingerprint = has_fingerprint,
>> +         .fingerprint = fingerprint,
>> +         .has_backup_id = has_backup_id,
>> +@@ -1131,5 +1137,6 @@ ProxmoxSupportStatus *qmp_query_proxmox_
>> +     ret->pbs_dirty_bitmap = true;
>> +     ret->query_bitmap_info = true;
>> +     ret->pbs_dirty_bitmap_migration = true;
>> ++    ret->pbs_masterkey = true;
>> +     return ret;
>> + }
>> +Index: qemu/block/monitor/block-hmp-cmds.c
>> +===================================================================
>> +--- qemu.orig/block/monitor/block-hmp-cmds.c
>> ++++ qemu/block/monitor/block-hmp-cmds.c
>> +@@ -1035,6 +1035,7 @@ void hmp_backup(Monitor *mon, const QDic
>> +         false, NULL, // PBS password
>> +         false, NULL, // PBS keyfile
>> +         false, NULL, // PBS key_password
>> ++        false, NULL, // PBS master_keyfile
>> +         false, NULL, // PBS fingerprint
>> +         false, NULL, // PBS backup-id
>> +         false, 0, // PBS backup-time
>> +Index: qemu/qapi/block-core.json
>> +===================================================================
>> +--- qemu.orig/qapi/block-core.json
>> ++++ qemu/qapi/block-core.json
>> +@@ -827,6 +827,8 @@
>> + #
>> + # @key-password: password for keyfile (optional for format 'pbs')
>> + #
>> ++# @master_keyfile: PEM-formatted master public keyfile (optional for format 'pbs')
>> ++#
> 
> please use master-keyfile with a dash
> 
>> + # @fingerprint: server cert fingerprint (optional for format 'pbs')
>> + #
>> + # @backup-id: backup ID (required for format 'pbs')
>> +@@ -846,6 +848,7 @@
>> +                                     '*password': 'str',
>> +                                     '*keyfile': 'str',
>> +                                     '*key-password': 'str',
>> ++                                    '*master_keyfile': 'str',
> 
> here too
> 
> Upstream seems to use _ in some places, but at least keep it consistent 
> in our code ;)
> 
>> +                                     '*fingerprint': 'str',
>> +                                     '*backup-id': 'str',
>> +                                     '*backup-time': 'int',
>> +@@ -895,6 +898,9 @@
>> + #                              migration cap if this is false/unset may lead
>> + #                              to crashes on migration!
>> + #
>> ++# @pbs-masterkey: True if the QMP backup call supports the 'master_keyfile'
>> ++#                 parameter.
>> ++#
>> + # @pbs-library-version: Running version of libproxmox-backup-qemu0 library.
>> + #
>> + ##
>> +@@ -902,6 +908,7 @@
>> +   'data': { 'pbs-dirty-bitmap': 'bool',
>> +             'query-bitmap-info': 'bool',
>> +             'pbs-dirty-bitmap-migration': 'bool',
>> ++            'pbs-masterkey': 'bool',
>> +             'pbs-library-version': 'str' } }
>> +
>> + ##
>> diff --git a/debian/patches/series b/debian/patches/series
>> index 1ef7185..433efda 100644
>> --- a/debian/patches/series
>> +++ b/debian/patches/series
>> @@ -59,3 +59,4 @@ pve/0055-PVE-Migrate-dirty-bitmap-state-via-savevm.patch
>>   pve/0056-migration-block-dirty-bitmap-migrate-other-bitmaps-e.patch
>>   pve/0057-PVE-fix-aborting-multiple-CREATED-jobs-in-sequential.patch
>>   pve/0058-PVE-fall-back-to-open-iscsi-initiatorname.patch
>> +pve/0059-pbs-backup-add-masterkey.patch
>> 
>