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NAME

       avc_compute_create,  avc_compute_member  - obtain SELinux label for new
       object.

SYNOPSIS

       #include <selinux/selinux.h>

       #include <selinux/avc.h>

       int avc_compute_create(security_id_t ssid, security_id_t tsid,
                              security_class_t tclass, security_id_t *newsid);

       int avc_compute_member(security_id_t ssid, security_id_t tsid,
                              security_class_t tclass, security_id_t *newsid);

DESCRIPTION

       avc_compute_create is used to compute a SID to use for labeling  a  new
       object  in  a  particular  class  based  on  a  SID pair.  This call is
       identical to security_compute_create, but does not  require  converting
       from userspace SID’s to contexts and back again.

       avc_compute_member  is  used  to  compute  a  SID to use for labeling a
       polyinstantiated object instance of a particular class based on  a  SID
       pair.   This call is identical to security_compute_member, but does not
       require converting from userspace SID’s to contexts and back again.

       These functions return a SID for the computed  context  in  the  memory
       referenced by sid.

RETURN VALUE

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

ERRORS

       EINVAL The tclass and/or the security contexts referenced by  ssid  and
              tsid are not recognized by the currently loaded policy.

       ENOMEM An attempt to allocate memory failed.

AUTHOR

       Eamon Walsh <ewalsh@tycho.nsa.gov>

SEE ALSO

       avc_init(3),     avc_context_to_sid(3),     security_compute_create(3),
       selinux(8)

                                  30 Mar 2007            avc_compute_create(3)