The
mac_get_file()
system call returns the label associated with a file specified by
pathname.
The
mac_get_link()
function is the same as
mac_get_file(),
except that it does not follow symlinks.
The
mac_get_fd()
system call returns the label associated with an object referenced by
the specified file descriptor.
Note that in the case of a file system socket, the label returned will
be the socket label, which may be different from the label of the
on-disk node acting as a rendezvous for the socket.
The
mac_get_peer()
system call returns the label associated with the remote endpoint of
a socket; the exact semantics of this call will depend on the protocol
domain, communications type, and endpoint; typically this label will
be cached when a connection-oriented protocol instance is first set up,
and is undefined for datagram protocols.
The
mac_get_pid()
and
mac_get_proc()
system calls return the process label associated with an arbitrary
process ID, or the current process.
Label storage for use with these calls must first be allocated and
prepared using the
mac_prepare(3)
functions.
When an application is done using a label, the memory may be returned
using
mac_free(3).
