aa_getcon (2)

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
NOTES
BUGS
SEE ALSO

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)

org.freedesktop.DBus.GetConnectionAppArmorSecurityContext - get the task confinement of a D-Bus connection's owner

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 **con, char **mode);

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

int aa_getcon(char **con, char **mode);

int aa_getpeercon_raw(int fd, char *buf, int *len, char **mode);

int aa_getpeercon(int fd, char **con, char **mode);

Link with -lapparmor when compiling.

Additionally, a D-Bus method is available:

STRING org.freedesktop.DBus.GetConnectionAppArmorSecurityContext(in STRING name)

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(), but the returned string *mode should not be freed. The *con 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.

The org.freedesktop.DBus.GetConnectionAppArmorSecurityContext() D-Bus method gets the AppArmor confinement string associated with the unique connection name. If D-Bus is not performing AppArmor mediation, the org.freedesktop.DBus.Error.AppArmorSecurityContextUnknown error is returned.

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.

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://bugs.launchpad.net/apparmor/+filebug>.