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LIBBSM(3)		 BSD Library Functions Manual		     LIBBSM(3)

     libbsm — Basic Security Module (BSM) Audit API

     library “libbsm”

     #include <bsm/libbsm.h>

     The libbsm library routines provide an interface to BSM audit record
     streams, allowing both the parsing of existing audit streams, as well as
     the creation of new audit records and streams.

     The libbsm library provides a large number of Audit programming inter‐
     faces in several classes: event stream interfaces, class interfaces, con‐
     trol interfaces, event interfaces, I/O interfaces, mask interfaces, noti‐
     fication interfaces, token interfaces, and user interfaces.  These are
     described respectively in the au_class(3), au_control(3), au_event(3),
     au_mask(3), au_notify(3), au_stream(3), au_token(3), and au_user(3) man‐
     ual pages.

   Audit Event Stream Interfaces
     Audit event stream interfaces support interaction with file-backed audit
     event streams: au_close(3), au_close_buffer(3), au_free_token(3),
     au_open(3), au_write(3), audit_submit(3).

   Audit Class Interfaces
     Audit class interfaces support the look up of information from the
     audit_class(5) database: endauclass(3), getauclassent(3),
     getauclassent_r(3), getauclassnam(3), getauclassnam_r(3), setauclass(3).

   Audit Control Interfaces
     Audit control interfaces support the look up of information from the
     audit_control(5) database: endac(3), setac(3), getacdir(3),
     getacfilesz(3), getacflg(3), getacmin(3), getacna(3), getacpol(3),
     au_poltostr(3), au_strtopol(3).

   Audit Event Interfaces
     Audit event interfaces support the look up of information from the
     audit_event(5) database: endauevent(3), setauevent(3), getauevent(3),
     getauevent_r(3), getauevnam(3), getauevnam_r(3), getauevnonam(3),
     getauevnonam_r(3), getauevnum(3), getauevnum_r(3).

   Audit I/O Interfaces
     Audit I/O interfaces support the processing and printing of tokens, as
     well as the reading of audit records: au_fetch_tok(3), au_print_tok(3),

   Audit Mask Interfaces
     Audit mask interfaces convert support the conversion between strings and
     au_mask_t values.	They may also be used to determine if a particular
     audit event is matched by a mask: au_preselect(3), getauditflagsbin(3),

   Audit Notification Interfaces
     Audit notification routines track audit state in a form permitting effi‐
     cient update, avoiding frequent system calls to check the kernel audit
     state: au_get_state(3), au_notify_initialize(3), au_notify_terminate(3).
     These interfaces are implemented only for Darwin/Mac OS X.

   Audit Token Interface
     Audit token interfaces permit the creation of tokens for use in creating
     audit records for submission to event streams.  Each interface converts a
     C type to its token_t representation: au_to_arg(3), au_to_arg32(3),
     au_to_arg64(3), au_to_attr64(3), au_to_data(3), au_to_exec_args(3),
     au_to_exec_env(3), au_to_exit(3), au_to_file(3), au_to_groups(3),
     au_to_header32(3), au_to_header64(3), au_to_in_addr(3),
     au_to_in_addr_ex(3), au_to_ip(3), au_to_ipc(3), au_to_ipc_perm(3),
     au_to_iport(3), au_to_me(3), au_to_newgroups(3), au_to_opaque(3),
     au_to_path(3), au_to_process(3), au_to_process32(3), au_to_process64(3),
     au_to_process_ex(3), au_to_process32_ex(3), au_to_process64_ex(3),
     au_to_return(3), au_to_return32(3), au_to_return64(3), au_to_seq(3),
     au_to_sock_inet(3), au_to_sock_inet32(3), au_to_sock_inet128(3),
     au_to_socket_ex(3), au_to_subject(3), au_to_subject32(3),
     au_to_subject64(3), au_to_subject_ex(3), au_to_subject32_ex(3),
     au_to_subject64_ex(3), au_to_text(3), au_to_trailer(3),

   Audit User Interfaces
     Audit user interfaces support the look up of information from the
     audit_user(5) database: au_user_mask(3), endauuser(3), setauuser(3),
     getauuserent(3), getauuserent_r(3), getauusernam(3), getauusernam_r(3),

   Audit Constant Conversion Interfaces
     These functions convert between BSM and local constants, including the
     errno(2) number, socket type, and protocol famil spaces, and must be used
     to generate and interpret BSM return and extended socket tokens:
     au_bsm_to_domain(3), au_bsm_to_errno(3), au_bsm_to_fcntl_cmd(3),
     au_bsm_to_socket_type(3), au_domain_to_bsm(3), au_errno_to_bsm(3),
     au_fcntl_cmd_to_bsm(3), au_socket_type_to_bsm(3).

     au_class(3), au_domain(3), au_errno(3), au_mask(3), au_notify(3),
     au_socket_type(3), au_stream(3), au_token(3), au_user(3),
     audit_submit(3), audit_class(5), audit_control(5)

     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.

     This software was created by Robert Watson, Wayne Salamon, and 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 would not be unlikely.

     The libbsm library implementations are generally thread-safe, but not

     The assignment of routines to classes could use some work, as it is
     decidely ad hoc.  For example, au_read_rec() should probably be consid‐
     ered a stream routine.

BSD				 March 5, 2009				   BSD

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