[libvirt] [PATCH 1/5] list: Define new API virConnectListAllSecrets

Peter Krempa pkrempa at redhat.com
Fri Sep 14 09:47:58 UTC 2012


On 09/14/12 10:38, Osier Yang wrote:
> This is to list the secret objects. No flags are supported

This statement isn't accurate as you added filtering flags.

>
> include/libvirt/libvirt.h.in: Declare enum virConnectListAllSecretFlags
>                                and virConnectListAllSecrets.
> python/generator.py: Skip auto-generating
> src/driver.h: (virDrvConnectListAllSecrets)
> src/libvirt.c: Implement the public API
> src/libvirt_public.syms: Export the symbol to public
> ---
>   include/libvirt/libvirt.h.in |   21 +++++++++++++
>   python/generator.py          |    1 +
>   src/driver.h                 |    5 +++
>   src/libvirt.c                |   66 ++++++++++++++++++++++++++++++++++++++++++
>   src/libvirt_public.syms      |    1 +
>   5 files changed, 94 insertions(+), 0 deletions(-)
>
> diff --git a/include/libvirt/libvirt.h.in b/include/libvirt/libvirt.h.in
> index 3d41026..c38ab23 100644
> --- a/include/libvirt/libvirt.h.in
> +++ b/include/libvirt/libvirt.h.in
> @@ -3266,6 +3266,27 @@ int                     virConnectNumOfSecrets  (virConnectPtr conn);
>   int                     virConnectListSecrets   (virConnectPtr conn,
>                                                    char **uuids,
>                                                    int maxuuids);
> +
> +/*
> + * virConnectListAllSecrets:
> + *
> + * Flags used to filter the returned secrets. Flags in each group
> + * are exclusive attributes of a secret.
> + */
> +typedef enum {
> +    /* kept in memory, never stored persistently */
> +    VIR_CONNECT_LIST_SECRETS_EPHEMERAL    = 1 << 0,
> +    VIR_CONNECT_LIST_SECRETS_NO_EPHEMERAL = 1 << 1,
> +
> +    /* not revealed to any caller of libvirt, nor
> +     * to any other node  */
> +    VIR_CONNECT_LIST_SECRETS_PRIVATE      = 1 << 2,
> +    VIR_CONNECT_LIST_SECRETS_NO_PRIVATE   = 1 << 3,
> +} virConnectListAllSecretsFlags;
> +
> +int                     virConnectListAllSecrets(virConnectPtr conn,
> +                                                 virSecretPtr **secrets,
> +                                                 unsigned int flags);
>   virSecretPtr            virSecretLookupByUUID(virConnectPtr conn,
>                                                 const unsigned char *uuid);
>   virSecretPtr            virSecretLookupByUUIDString(virConnectPtr conn,
> diff --git a/python/generator.py b/python/generator.py
> index d3163e4..955c893 100755
> --- a/python/generator.py
> +++ b/python/generator.py
> @@ -466,6 +466,7 @@ skip_function = (
>       'virConnectListAllInterfaces', # overridden in virConnect.py
>       'virConnectListAllNodeDevices', # overridden in virConnect.py
>       'virConnectListAllNWFilters', # overridden in virConnect.py
> +    'virConnectListAllSecrets', # overridden in virConnect.py
>
>       'virStreamRecvAll', # Pure python libvirt-override-virStream.py
>       'virStreamSendAll', # Pure python libvirt-override-virStream.py
> diff --git a/src/driver.h b/src/driver.h
> index 9984a85..3e69dae 100644
> --- a/src/driver.h
> +++ b/src/driver.h
> @@ -1567,6 +1567,10 @@ typedef int
>       (*virDrvListSecrets)               (virConnectPtr conn,
>                                           char **uuids,
>                                           int maxuuids);
> +typedef int
> +    (*virDrvListAllSecrets)            (virConnectPtr conn,
> +                                        virSecretPtr **secrets,
> +                                        unsigned int flags);
>
>   typedef struct _virSecretDriver virSecretDriver;
>   typedef virSecretDriver *virSecretDriverPtr;
> @@ -1588,6 +1592,7 @@ struct _virSecretDriver {
>
>       virDrvNumOfSecrets          numOfSecrets;
>       virDrvListSecrets           listSecrets;
> +    virDrvListAllSecrets        listAllSecrets;
>       virDrvSecretLookupByUUID    lookupByUUID;
>       virDrvSecretLookupByUsage   lookupByUsage;
>       virDrvSecretDefineXML       defineXML;
> diff --git a/src/libvirt.c b/src/libvirt.c
> index cae9bc9..6a9be6d 100644
> --- a/src/libvirt.c
> +++ b/src/libvirt.c
> @@ -14594,6 +14594,72 @@ error:
>   }
>
>   /**
> + * virConnectListAllSecrets:
> + * @conn: Pointer to the hypervisor connection.
> + * @secrets: Pointer to a variable to store the array containing the secret
> + *           objects or NULL if the list is not required (just returns the
> + *           number of secrets).
> + * @flags: extra flags; not used yet, so callers should always pass 0
> + *
> + * Collect the list of secrets, and allocate an array to store those
> + * objects.
> + *
> + * Normally, all secrets are returned; however, @flags can be used to
> + * filter the results for a smaller list of targeted secrets. The valid
> + * flags are divided into groups, where each group contains bits that
> + * describe mutually exclusive attributes of a secret, and where all bits
> + * within a group describe all possible secrets.
> + *
> + * The first group of @flags is VIR_CONNECT_LIST_SECRETS_EPHEMERAL(kept in
> + * memory, not persistent) and VIR_CONNECT_LIST_SECRETS_NO_EPHEMERAL
> + * (nor ephemeral) to filter the secrets by whether it's ephemeral or not.

I'd rephrase this paragraph a little bit:

The first group of @flags is used to filter the list by storage location 
of the secret. Flag VIR_CONNECT_LIST_SECRETS_EPHEMERAL selects secrets 
that are kept only in memory. Flag VIR_CONNECT_LIST_SECRETS_NO_EPHEMERAL 
selects secrets that are allowed to be kept in persistent storage.

(In any case, it'd be best if Eric would state his opinion on this :) )

> + *
> + * The second group of @flags is VIR_CONNECT_LIST_SECRETS_PRIVATE
> + * (not revealed to any caller of libvirt, nor to any other node)
> + * and VIR_CONNECT_LIST_SECRETS_NO_PRIVATE (not private), to filter
> + * the secrets by whether it's private or not.

This paragraph also contains a lot of redundant information:

The second group of @flags allows filtering secrets by privacy. When 
flag VIR_CONNECT_LIST_SECRETS_PRIVATE is specified secrets that are 
never revealed to any caller of libvirt nor to any other node are 
returned. Flag VIR_CONNECT_LIST_SECRETS_NO_PRIVATE can be used to select 
non-private secrets.

> + *
> + * Returns the number of secrets found or -1 and sets @secrets to NULL in case
> + * of error.  On success, the array stored into @secrets is guaranteed to
> + * have an extra allocated element set to NULL but not included in the return count,
> + * to make iteration easier.  The caller is responsible for calling
> + * virSecretFree() on each array element, then calling free() on @secrets.
> + */
> +int
> +virConnectListAllSecrets(virConnectPtr conn,
> +                         virSecretPtr **secrets,
> +                         unsigned int flags)
> +{
> +    VIR_DEBUG("conn=%p, secrets=%p, flags=%x", conn, secrets, flags);
> +
> +    virResetLastError();
> +
> +    if (secrets)
> +        *secrets = NULL;
> +
> +    if (!VIR_IS_CONNECT(conn)) {
> +        virLibConnError(VIR_ERR_INVALID_CONN, __FUNCTION__);
> +        virDispatchError(NULL);
> +        return -1;
> +    }
> +
> +    if (conn->secretDriver &&
> +        conn->secretDriver->listAllSecrets) {
> +        int ret;
> +        ret = conn->secretDriver->listAllSecrets(conn, secrets, flags);
> +        if (ret < 0)
> +            goto error;
> +        return ret;
> +    }
> +
> +    virLibConnError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
> +
> +error:
> +    virDispatchError(conn);
> +    return -1;
> +}
> +
> +/**
>    * virConnectListSecrets:
>    * @conn: virConnect connection
>    * @uuids: Pointer to an array to store the UUIDs
> diff --git a/src/libvirt_public.syms b/src/libvirt_public.syms
> index a918bc8..828b315 100644
> --- a/src/libvirt_public.syms
> +++ b/src/libvirt_public.syms
> @@ -560,6 +560,7 @@ LIBVIRT_0.10.2 {
>           virConnectListAllNetworks;
>           virConnectListAllNodeDevices;
>           virConnectListAllNWFilters;
> +        virConnectListAllSecrets;
>           virConnectListAllStoragePools;
>           virStoragePoolListAllVolumes;
>   } LIBVIRT_0.10.0;
>

Otherwise the code is OK. So ACK if somebody speaks his opinion on the 
docs and you fix the commit message.

Peter




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