NAME

       aa_is_enabled - determine if apparmor is available

       aa_find_mountpoint - find where the apparmor interface filesystem is mounted

SYNOPSIS

       #include <sys/apparmor.h>

       int aa_is_enabled(void);

       int aa_find_mountpoint(char **mnt);

       Link with -lapparmor when compiling.

DESCRIPTION

       The aa_is_enabled function returns true (1) if apparmor is enabled.  If it isn't it sets
       the errno(3) to reflect the reason it is not enabled and returns 0.

       The aa_find_mountpoint function finds where the apparmor filesystem is mounted on the
       system, and returns a string containing the mount path.  It is the caller's responsibility
       to free(3) the returned path.

RETURN VALUE

       aa_is_enabled On success 1 is returned. On error, 0 is returned, and errno(3) is set
       appropriately.

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

ERRORS

       aa_is_enabled

       ENOSYS
           AppArmor extensions to the system are not available.

       ECANCELED
           AppArmor is available on the system but has been disabled at boot.

       EBUSY
           AppArmor is available but only via private interfaces.

       ENOENT
           AppArmor is available (and maybe even enforcing policy) but the interface is not
           available.

       ENOMEM
           Insufficient memory was available.

       EPERM
           Did not have sufficient permissions to determine if AppArmor is enabled.

       EACCES
           Did not have sufficient permissions to determine if AppArmor is enabled.

       EBUSY
           AppArmor is enabled but does not have access to shared interfaces, and only private
           interfaces are available.

       aa_find_mountpoint

       ENOMEM
           Insufficient memory was available.

       EACCES
           Access to the required paths was denied.

       ENOENT
           The apparmor filesystem mount could not be found

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), and <https://wiki.apparmor.net>.