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au_open (3)
  • au_open (3) ( Solaris man: Библиотечные вызовы )
  • >> au_open (3) ( FreeBSD man: Библиотечные вызовы )

  • BSD mandoc
     

    NAME

    
    
    au_close
    
     
    au_close_buffer
    
     
    au_close_token
    
     
    au_open
    
     
    au_write
    
     - create and commit audit records
    
     
    

    LIBRARY

    Lb libbsm
    
     
    

    SYNOPSIS

       #include <bsm/libbsm.h>
    int au_open (void);
    int au_write (int d token_t *tok);
    int au_close (int d int keep short event);
    int au_close_buffer (int d short event u_char *buffer size_t *buflen);
    int au_close_token (token_t *tok u_char *buffer size_t *buflen);
     

    DESCRIPTION

    These interfaces allow applications to allocate audit records, construct a record using a series of tokens, and commit the audit record to the system event log. An extension API is also provided to commit the record to an in-memory buffer rather than the system audit log.

    The au_open ();
    interface allocates a new audit record descriptor.

    The au_write ();
    interface adds a token to an allocated audit descriptor. When a token has been successfully added to a record, the caller no longer owns the token memory, and does not need to free it directly via a call to au_free_token3.

    The au_close ();
    function is used to commit an audit record to the system audit log, or abandon the record. In either cases, all resources associated with the record will be released. The Fa keep argument determines the behavior: a value of AU_TO_WRITE causes the record to be committed; a value of AU_TO_NO_WRITE causes it to be abandoned. When the audit record is committed, a BSM header will be inserted before tokens added to the record, using the event identifier passed via Fa event , and a trailer added to the end. Committing a record to the system audit log requires privilege.

    The au_close_buffer ();
    function writes the resulting record to an in-memory buffer of size Fa *buflen ; it will write back the filled buffer length into the same variable. The argument Fa event is the event identifier to use in the record header.

    The au_close_token ();
    function generates the BSM stream output for a single token, Fa tok , in the passed buffer Fa buffer . The initial buffer size and resulting data size are passed via Fa *buflen . The au_close_token ();
    function will free the token before returning.  

    RETURN VALUES

    The function au_open ();
    returns a non-negative audit record descriptor number on success, or a negative value on failure, along with error information in errno

    The functions au_write (,);
    au_close (,);
    au_close_buffer (,);
    and au_close_token ();
    return 0 on success, or a negative value on failure, along with error information in errno  

    SEE ALSO

    audit_submit3, libbsm(3)  

    HISTORY

    The OpenBSM implementation was created by McAfee Research, the security division of McAfee Inc., under contract to Apple Computer, Inc., in 2004. It was subsequently adopted by the TrustedBSD Project as the foundation for the OpenBSM distribution.  

    AUTHORS

    An -nosplit This software was created by An Robert Watson , An Wayne Salamon , and An Suresh Krishnaswamy for McAfee Research, the security research division of McAfee, Inc., under contract to Apple Computer, Inc.

    The Basic Security Module (BSM) interface to audit records and audit event stream format were defined by Sun Microsystems.  

    BUGS

    Currently, au_open ();
    does not reserve kernel resources necessary to commit the record to the trail; on systems supporting au_close (,);
    the call will block until resources are available to commit the record. However, this leads to the possibility of an action being permitted without the record being guaranteed to go to disk. Ideally, au_open ();
    would reserve resources necessary to commit any submitted record, releasing them on au_close (.);


     

    Index

    NAME
    LIBRARY
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    SEE ALSO
    HISTORY
    AUTHORS
    BUGS


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