ipc Token

The ipc token contains the System V IPC message/semaphore/shared-memory handle used by the caller to identify a particular IPC object. This token has three fields: a token ID that identifies this as an ipc token, a type field that specifies the type of the IPC object, and the handle that identifies the IPC object. Figure A-14 shows an ipc token.

Figure A-14 ipc Token Format

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Note -

The IPC object identifiers violate the context-free nature of the Solaris CMW audit tokens. No global "name" uniquely identifies IPC objects; instead, they are identified by their handles, which are valid only during the time the IPC objects are active. The identification should not be a problem since the System V IPC mechanisms are seldom used and they all share the same audit class.

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The IPC object type field can have the values shown in Table A-4. The values are defined in /usr/include/bsm/audit.h.

Table A-4 IPC Object Type Field

Name	Value	Description
AU_IPC_MSG	1	IPC message object
AU_IPC_SEM	2	IPC semaphore object
AU_IPC_SHM	3	IPC shared memory object