x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
AA_GETCON(2) AppArmor AA_GETCON(2)
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)
SYNOPSIS
#include <sys/apparmor.h>
int aa_getprocattr_raw(pid_t tid, const char *attr, char *buf, int len,
char **mode);
int aa_getprocattr(pid_t tid, const char *attr, char **label, char
**mode);
int aa_gettaskcon(pid_t target, char **label, char **mode);
int aa_getcon(char **label, char **mode);
int aa_getpeercon_raw(int fd, char *buf, int *len, char **mode);
int aa_getpeercon(int fd, char **label, char **mode);
Link with -lapparmor when compiling.
DESCRIPTION
The aa_getcon function gets the current AppArmor confinement context
for the current task. The confinement context consists of a label and a
mode. The label 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
mode is a string that describes how the kernel is enforcing the policy
defined in the profile. Profiles loaded in "enforce" mode will result
in enforcement of the policy defined in the profile as well as
reporting policy violation attempts. Profiles in "complain" mode will
not enforce policy but instead report policy violation attempts.
Some examples of possible returned *label strings are "unconfined",
"/sbin/dhclient", and "Firefox". The string can consist of any non-NUL
characters but it will be NUL-terminated. The *label string must be
freed using free().
The possible *mode strings are "enforce" and "complain". Additionally,
*mode may be NULL when *label is "unconfined". The *mode string must
not be freed. The *label and *mode strings come from a single buffer
allocation and are separated by a NUL character.
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_getpeercon_raw function is the backend for the aa_getpeercon
function and does not handle buffer allocation.
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.
RETURN VALUE
On success size of data placed in the buffer is returned, this includes
the mode if present and any terminating characters. On error, -1 is
returned, and errno(3) is set appropriately.
ERRORS
EINVAL
The apparmor kernel module is not loaded or the communication via
the /proc/*/attr/file did not conform to protocol.
ENOMEM
Insufficient kernel memory was available.
EACCES
Access to the specified file/task was denied.
ENOENT
The specified file/task does not exist or is not visible.
ERANGE
The confinement data is too large to fit in the supplied buffer.
ENOPROTOOPT
The kernel doesn't support the SO_PEERLABEL option in sockets. This
happens mainly when the kernel lacks 'fine grained unix mediation'
support. It also can happen on LSM stacking kernels where another
LSM has claimed this interface and decides to return this error,
although this is really a corner case.
NOTES
If aa_getpeercon_raw returns -1 and errno is ERANGE, the value of *len
can be used to reallocate buf so that it is sufficiently large enough
to store the confinement data.
BUGS
None known. If you find any, please report them at
<https://gitlab.com/apparmor/apparmor/-/issues>.
SEE ALSO
apparmor(7), apparmor.d(5), apparmor_parser(8), aa_change_profile(2),
aa_splitcon(3) and <https://wiki.apparmor.net>.
AppArmor 3.1.7 2025-05-05 AA_GETCON(2)
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