Manual pages › X Window and screen libraries (3X)

XAddHost(3X)

control host access

From the original Amiga UNIX 2.1 manual. Some things it mentions may not be in this release.

NAME

XAddHost, XAddHosts, XListHosts, XRemoveHost, XRemoveHosts, XSetAccessControl, XEnableAccessControl, XDisableAccessContro - control host access

SYNTAX

XAddHost(display, host)
      Display *display;
      XHostAddress *host;

XAddHosts(display, hosts, num_hosts)
      Display *display;
      XHostAddress *hosts;
      int num_hosts;

XHostAddress *XListHosts(display, nhosts_return,
state_return)
      Display *display;
      int *nhosts_return;
      Bool *state_return;

XRemoveHost(display, host)
      Display *display;
      XHostAddress *host;

XRemoveHosts(display, hosts, num_hosts)
      Display *display;
      XHostAddress *hosts;
      int num_hosts;

XSetAccessControl(display, mode)
      Display *display;
      int mode;

XEnableAccessControl(display)
      Display *display;

XDisableAccessControl(display)
      Display *display;

ARGUMENTS

display   Specifies the connection to the XWIN server.

host      Specifies the host that is to be added or removed.
hosts     Specifies each host that is to be added or
          removed.

mode Specifies the mode. You can pass EnableAccess or DisableAccess.

     nhosts_return

XWIN 3.0               Last change: 9/1/88                 .ie t

               Returns the number of hosts currently in the
               access control list.

num_hosts Specifies the number of hosts.

state_return

Returns the state of the access control.

DESCRIPTION

The XAddHost function adds the specified host to the access
control list for that display.  The server must be on the
same host as the client issuing the command, or a BadAccess
error results.

XAddHost can generate BadAccess and BadValue errors.

The XAddHosts function adds each specified host to the
access control list for that display.  The server must be on
the same host as the client issuing the command, or a BadAc-
cess error results.

XAddHosts can generate BadAccess and BadValue errors.

The XListHosts function returns the current access control
list as well as whether the use of the list at connection
setup was enabled or disabled.  XListHosts allows a program
to find out what machines can make connections.  It also
returns a pointer to a list of host structures that were
allocated by the function. When no longer needed, this
memory should be freed by calling XFree.

The XRemoveHost function removes the specified host from the
access control list for that display.  The server must be on
the same host as the client process, or a BadAccess error
results.  If you remove your machine from the access list,
you can no longer connect to that server, and this operation
cannot be reversed unless you reset the server.

XRemoveHost can generate BadAccess and BadValue errors.

The XRemoveHosts function removes each specified host from
the access control list for that display. The XWIN server
must be on the same host as the client process, or a BadAc-
cess error results.  If you remove your machine from the
access list, you can no longer connect to that server, and
this operation cannot be reversed unless you reset the
server.

XRemoveHosts can generate BadAccess and BadValue errors.

     The XSetAccessControl function either enables or disables
     the use of the access control list at each connection setup.

XWIN 3.0               Last change: 9/1/88                 .ie t

     XSetAccessControl can generate BadAccess and BadValue
     errors.

     The XEnableAccessControl function enables the use of the
     access control list at each connection setup.

XEnableAccessControl can generate a BadAccess error.

The XDisableAccessControl function disables the use of the access control list at each connection setup.

XDisableAccessControl can generate a BadAccess error.

DIAGNOSTICS

BadAccess A client attempted to modify the access control
          list from other than the local (or otherwise
          authorized) host.

BadValue  Some numeric value falls outside the range of