selabel_x(5)

NAME
selabel_x - userspace SELinux labeling interface: X Window System contexts backend.

SYNOPSIS
#include <selinux/selinux.h> #include <selinux/label.h>

int selabel_lookup(struct selabel_handle *hnd,
security_context_t *context, const char *object_name, int object_type);

DESCRIPTION
The X contexts backend maps from X Window System object names into security contexts. It is used to find the appropriate context for X Window System objects whose significance and/or usage semantics are determined primarily by name. This backend is also used to determine the default context for labeling remotely connected X clients. The object_type argument should be set to one of the following values:

SELABEL_X_PROP
    The object_name argument specifies the name of a window property, such as "WM_NAME".

SELABEL_X_SELN
    The object_name argument specifies the name of a selection, such as "PRIMARY".

SELABEL_X_EXT
    The object_name argument specifies the name of a protocol extension, such as "RENDER".

SELABEL_X_EVENT
    The object_name argument specifies the name of an event type, such as "X11:ButtonPress".

SELABEL_X_CLIENT
    The object_name argument is ignored and should be set to NULL. The default context for labeling remote X clients is returned.

SELABEL_X_POLYPROP
    Like SELABEL_X_PROP, but checks if the property was marked as being polyinstantiated. See NOTES below.

SELABEL_X_POLYSELN
    Like SELABEL_X_SELN, but checks if the selection was marked as being polyinstantiated. See NOTES below.

OPTIONS
In addition to the global options described in selabel_open(3), this backend recognizes the following options:

SELABEL_OPT_PATH
    A non-null value for this option specifies a path to a file that will be opened in lieu of the standard X contexts file.

NOTES
Properties and selections are marked as either polyinstantiated or not. For these name types, the "POLY" option searches only the names marked as being polyinstantiated, while the other option searches only the names marked as not being polyinstantiated. Users of the interface should check both mappings, optionally taking action based on the result (e.g. polyinstantiating the object).

SEE ALSO
selabel_open(3), selabel_lookup(3), selabel_stats(3), selinux(8)