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This software was developed for the FreeBSD Project by Chris
Costello at Safeport Network Services and Network Associates Labs,
the Security Research Division of Network Associates, Inc. under
DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
DARPA CHATS research program.
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$FreeBSD$
.Dd August 22, 2003 .Dt MAC_PREPARE 3 .Os .Sh NAME .Nm mac_prepare , mac_prepare_type , mac_prepare_file_label , .Nm mac_prepare_ifnet_label , mac_prepare_process_label .Nd allocate appropriate storage for .Vt mac_t .Sh SYNOPSIS n sys/mac.h .Ft int .Fn mac_prepare "mac_t *mac" "const char *elements" .Ft int .Fn mac_prepare_type "mac_t *mac" "const char *name" .Ft int .Fn mac_prepare_file_label "mac_t *mac" .Ft int .Fn mac_prepare_ifnet_label "mac_t *mac" .Ft int .Fn mac_prepare_process_label "mac_t *mac" .Sh DESCRIPTION The .Nm family of functions allocates the appropriate amount of storage and initializes .Fa *mac for use by .Xr mac_get 3 . When the resulting label is passed into the .Xr mac_get 3 functions, the kernel will attempt to fill in the label elements specified when the label was prepared. Elements are specified in a nul-terminated string, using commas to delimit fields. Element names may be prefixed with the .Ql ? character to indicate that a failure by the kernel to retrieve that element should not be considered fatal.
p The .Fn mac_prepare function accepts a list of policy names as a parameter, and allocates the storage to fit those label elements accordingly. The remaining functions in the family make use of system defaults defined in .Xr mac.conf 5 instead of an explicit .Va elements argument, deriving the default from the specified object type.
p .Fn mac_prepare_type allocates the storage to fit an object label of the type specified by the .Va name argument. The .Fn mac_prepare_file_label , .Fn mac_prepare_ifnet_label , and .Fn mac_prepare_process_label functions are equivalent to invocations of .Fn mac_prepare_type with arguments of .Qq file , .Qq ifnet , and .Qq process respectively. .Sh RETURN VALUES .Rv -std .Sh SEE ALSO .Xr mac 3 , .Xr mac_free 3 , .Xr mac_get 3 , .Xr mac_is_present 3 , .Xr mac_set 3 , .Xr mac 4 , .Xr mac.conf 5 , .Xr maclabel 7 .Sh STANDARDS POSIX.1e is described in IEEE POSIX.1e draft 17. Discussion of the draft continues on the cross-platform POSIX.1e implementation mailing list. To join this list, see the .Fx POSIX.1e implementation page for more information. .Sh HISTORY Support for Mandatory Access Control was introduced in .Fx 5.0 as part of the .Tn TrustedBSD Project. Support for generic object types first appeared in .Fx 5.2 .