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[NetLabel]: rework the Netlink attribute handling (part 2)

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At the suggestion of Thomas Graf, rewrite NetLabel's use of Netlink attributes
to better follow the common Netlink attribute usage.

Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Paul Moore
2006-09-25 15:56:37 -07:00
committed by David S. Miller
parent fcd4828064
commit fd3858554b
6 changed files with 894 additions and 829 deletions
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211
net/netlabel/netlabel_mgmt.h
View File

@@ -34,212 +34,137 @@
#include <net/netlabel.h>
/*
* The following NetLabel payloads are supported by the management interface,
* all of which are preceeded by the nlmsghdr struct.
*
* o ACK:
* Sent by the kernel in response to an applications message, applications
* should never send this message.
*
* +----------------------+-----------------------+
* | seq number (32 bits) | return code (32 bits) |
* +----------------------+-----------------------+
*
* seq number: the sequence number of the original message, taken from the
* nlmsghdr structure
* return code: return value, based on errno values
* The following NetLabel payloads are supported by the management interface.
*
* o ADD:
* Sent by an application to add a domain mapping to the NetLabel system.
* The kernel should respond with an ACK.
*
* +-------------------+
* | domains (32 bits) | ...
* +-------------------+
* Required attributes:
*
* domains: the number of domains in the message
* NLBL_MGMT_A_DOMAIN
* NLBL_MGMT_A_PROTOCOL
*
* +--------------------------+-------------------------+
* | domain string (variable) | protocol type (32 bits) | ...
* +--------------------------+-------------------------+
* If using NETLBL_NLTYPE_CIPSOV4 the following attributes are required:
*
* +-------------- ---- --- -- -
* | mapping data ... repeated
* +-------------- ---- --- -- -
* NLBL_MGMT_A_CV4DOI
*
* domain string: the domain string, NULL terminated
* protocol type: the protocol type (defined by NETLBL_NLTYPE_*)
* mapping data: specific to the map type (see below)
*
* NETLBL_NLTYPE_UNLABELED
*
* No mapping data for this protocol type.
*
* NETLBL_NLTYPE_CIPSOV4
*
* +---------------+
* | doi (32 bits) |
* +---------------+
*
* doi: the CIPSO DOI value
* If using NETLBL_NLTYPE_UNLABELED no other attributes are required.
*
* o REMOVE:
* Sent by an application to remove a domain mapping from the NetLabel
* system. The kernel should ACK this message.
* system.
*
* +-------------------+
* | domains (32 bits) | ...
* +-------------------+
* Required attributes:
*
* domains: the number of domains in the message
* NLBL_MGMT_A_DOMAIN
*
* +--------------------------+
* | domain string (variable) | ...
* +--------------------------+
*
* domain string: the domain string, NULL terminated
*
* o LIST:
* o LISTALL:
* This message can be sent either from an application or by the kernel in
* response to an application generated LIST message. When sent by an
* application there is no payload. The kernel should respond to a LIST
* message either with a LIST message on success or an ACK message on
* failure.
* response to an application generated LISTALL message. When sent by an
* application there is no payload and the NLM_F_DUMP flag should be set.
* The kernel should respond with a series of the following messages.
*
* +-------------------+
* | domains (32 bits) | ...
* +-------------------+
* Required attributes:
*
* domains: the number of domains in the message
* NLBL_MGMT_A_DOMAIN
* NLBL_MGMT_A_PROTOCOL
*
* +--------------------------+
* | domain string (variable) | ...
* +--------------------------+
* If using NETLBL_NLTYPE_CIPSOV4 the following attributes are required:
*
* +-------------------------+-------------- ---- --- -- -
* | protocol type (32 bits) | mapping data ... repeated
* +-------------------------+-------------- ---- --- -- -
* NLBL_MGMT_A_CV4DOI
*
* domain string: the domain string, NULL terminated
* protocol type: the protocol type (defined by NETLBL_NLTYPE_*)
* mapping data: specific to the map type (see below)
*
* NETLBL_NLTYPE_UNLABELED
*
* No mapping data for this protocol type.
*
* NETLBL_NLTYPE_CIPSOV4
*
* +----------------+---------------+
* | type (32 bits) | doi (32 bits) |
* +----------------+---------------+
*
* type: the CIPSO mapping table type (defined in the cipso_ipv4.h header
* as CIPSO_V4_MAP_*)
* doi: the CIPSO DOI value
* If using NETLBL_NLTYPE_UNLABELED no other attributes are required.
*
* o ADDDEF:
* Sent by an application to set the default domain mapping for the NetLabel
* system. The kernel should respond with an ACK.
* system.
*
* +-------------------------+-------------- ---- --- -- -
* | protocol type (32 bits) | mapping data ... repeated
* +-------------------------+-------------- ---- --- -- -
* Required attributes:
*
* protocol type: the protocol type (defined by NETLBL_NLTYPE_*)
* mapping data: specific to the map type (see below)
* NLBL_MGMT_A_PROTOCOL
*
* NETLBL_NLTYPE_UNLABELED
* If using NETLBL_NLTYPE_CIPSOV4 the following attributes are required:
*
* No mapping data for this protocol type.
* NLBL_MGMT_A_CV4DOI
*
* NETLBL_NLTYPE_CIPSOV4
*
* +---------------+
* | doi (32 bits) |
* +---------------+
*
* doi: the CIPSO DOI value
* If using NETLBL_NLTYPE_UNLABELED no other attributes are required.
*
* o REMOVEDEF:
* Sent by an application to remove the default domain mapping from the
* NetLabel system, there is no payload. The kernel should ACK this message.
* NetLabel system, there is no payload.
*
* o LISTDEF:
* This message can be sent either from an application or by the kernel in
* response to an application generated LISTDEF message. When sent by an
* application there is no payload. The kernel should respond to a
* LISTDEF message either with a LISTDEF message on success or an ACK message
* on failure.
* application there is no payload. On success the kernel should send a
* response using the following format.
*
* +-------------------------+-------------- ---- --- -- -
* | protocol type (32 bits) | mapping data ... repeated
* +-------------------------+-------------- ---- --- -- -
* Required attributes:
*
* protocol type: the protocol type (defined by NETLBL_NLTYPE_*)
* mapping data: specific to the map type (see below)
* NLBL_MGMT_A_PROTOCOL
*
* NETLBL_NLTYPE_UNLABELED
* If using NETLBL_NLTYPE_CIPSOV4 the following attributes are required:
*
* No mapping data for this protocol type.
* NLBL_MGMT_A_CV4DOI
*
* NETLBL_NLTYPE_CIPSOV4
* If using NETLBL_NLTYPE_UNLABELED no other attributes are required.
*
* +----------------+---------------+
* | type (32 bits) | doi (32 bits) |
* +----------------+---------------+
* o PROTOCOLS:
* Sent by an application to request a list of configured NetLabel protocols
* in the kernel. When sent by an application there is no payload and the
* NLM_F_DUMP flag should be set. The kernel should respond with a series of
* the following messages.
*
* type: the CIPSO mapping table type (defined in the cipso_ipv4.h header
* as CIPSO_V4_MAP_*)
* doi: the CIPSO DOI value
* Required attributes:
*
* o MODULES:
* Sent by an application to request a list of configured NetLabel modules
* in the kernel. When sent by an application there is no payload.
*
* +-------------------+
* | modules (32 bits) | ...
* +-------------------+
*
* modules: the number of modules in the message, if this is an application
* generated message and the value is zero then return a list of
* the configured modules
*
* +------------------+
* | module (32 bits) | ... repeated
* +------------------+
*
* module: the module number as defined by NETLBL_NLTYPE_*
* NLBL_MGMT_A_PROTOCOL
*
* o VERSION:
* Sent by an application to request the NetLabel version string. When sent
* by an application there is no payload. This message type is also used by
* the kernel to respond to an VERSION request.
* Sent by an application to request the NetLabel version. When sent by an
* application there is no payload. This message type is also used by the
* kernel to respond to an VERSION request.
*
* +-------------------+
* | version (32 bits) |
* +-------------------+
* Required attributes:
*
* version: the protocol version number
* NLBL_MGMT_A_VERSION
*
*/
/* NetLabel Management commands */
enum {
NLBL_MGMT_C_UNSPEC,
NLBL_MGMT_C_ACK,
NLBL_MGMT_C_ADD,
NLBL_MGMT_C_REMOVE,
NLBL_MGMT_C_LIST,
NLBL_MGMT_C_LISTALL,
NLBL_MGMT_C_ADDDEF,
NLBL_MGMT_C_REMOVEDEF,
NLBL_MGMT_C_LISTDEF,
NLBL_MGMT_C_MODULES,
NLBL_MGMT_C_PROTOCOLS,
NLBL_MGMT_C_VERSION,
__NLBL_MGMT_C_MAX,
};
#define NLBL_MGMT_C_MAX (__NLBL_MGMT_C_MAX - 1)
/* NetLabel Management attributes */
enum {
NLBL_MGMT_A_UNSPEC,
NLBL_MGMT_A_DOMAIN,
/* (NLA_NUL_STRING)
* the NULL terminated LSM domain string */
NLBL_MGMT_A_PROTOCOL,
/* (NLA_U32)
* the NetLabel protocol type (defined by NETLBL_NLTYPE_*) */
NLBL_MGMT_A_VERSION,
/* (NLA_U32)
* the NetLabel protocol version number (defined by
* NETLBL_PROTO_VERSION) */
NLBL_MGMT_A_CV4DOI,
/* (NLA_U32)
* the CIPSOv4 DOI value */
__NLBL_MGMT_A_MAX,
};
#define NLBL_MGMT_A_MAX (__NLBL_MGMT_A_MAX - 1)
/* NetLabel protocol functions */
int netlbl_mgmt_genl_init(void);