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=pod

=head1 NAME

aa_getprocattr_raw, aa_getprocattr - read and parse procattr data

aa_getcon, aa_gettaskcon - get task confinement information

aa_getpeercon - get the confinement of a socket's other end (peer)

=head1 SYNOPSIS

B<#include E<lt>sys/apparmor.hE<gt>>

B<int aa_getprocattr_raw(pid_t tid, const char *attr, char *buf, int len,
			 char **mode);>

B<int aa_getprocattr(pid_t tid, const char *attr, char **buf, char **mode);>

B<int aa_gettaskcon(pid_t target, char **con, char **mode);>

B<int aa_getcon(char **con, char **mode);>

B<int aa_getpeercon(int fd, char **con);>

Link with B<-lapparmor> when compiling.

=head1 DESCRIPTION

The aa_getcon function gets the current AppArmor confinement context for the
current task.  The confinement context is usually just the name of the AppArmor
profile restricting the task, but it may include the profile namespace or in
some cases a set of profile names (known as a stack of profiles).  The returned string *con should be freed using free().

The aa_gettaskcon function is like the aa_getcon function except it will work
for any arbitrary task in the system.

The aa_getpeercon function is similar to that of aa_gettaskcon except that
it returns the confinement information for task on the other end of a socket
connection.

The aa_getprocattr function is the backend for the aa_getcon and aa_gettaskcon
functions and handles the reading and parsing of the confinement data from
different arbitrary attr files and returns the processed results in
an allocated buffer.

The aa_getprocattr_raw() is the backend for the aa_getprocattr function and
does not handle buffer allocation.

=head1 RETURN VALUE

On success zero is returned. On error, -1 is returned, and
errno(3) is set appropriately.

=head1 ERRORS

=over 4

=item B<EINVAL>

The apparmor kernel module is not loaded or the communication via the
F</proc/*/attr/file> did not conform to protocol.

=item B<ENOMEM>

Insufficient kernel memory was available.

=item B<EACCES>

Access to the specified I<file/task> was denied.

=item B<ENOENT>

The specified I<file/task> does not exist or is not visible.

=item B<ERANGE>

The confinement data is to large to fit in the supplied buffer.

=back

=head1 BUGS

None known. If you find any, please report them at
L<http://https://bugs.launchpad.net/apparmor/+filebug>.

=head1 SEE ALSO

apparmor(7), apparmor.d(5), apparmor_parser(8), aa_change_profile(2) and
L<http://wiki.apparmor.net>.

=cut