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XAddHost(3X11)
X11R6
NAME
  XAddHost, XAddHosts, XListHosts, XRemoveHost, XRemoveHosts,
  XSetAccessControl, XEnableAccessControl, XDisableAccessControl,
  XHostAddress - control host access and host control structure

SYNOPSIS
  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 X 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
      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 BadAccess 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 X 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.

  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.

  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.

STRUCTURES
  The XHostAddress structure contains:

       typedef struct {
	       int family;   /* for example FamilyInternet */
	       int length;   /* length of address, in bytes */
	       char *address;/* pointer to where to find the address */
       } XHostAddress;

  The family member specifies which protocol address family to use (for
  example, TCP/IP or DECnet) and can be FamilyInternet, FamilyDECnet, or
  FamilyChaos. The length member specifies the length of the address in
  bytes. The address member specifies a pointer to the address.

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 values accepted by
	  the request. Unless a specific range is specified for an argument,
	  the full range defined by the argument's type is accepted.  Any
	  argument defined as a set of alternatives can generate this error.

SEE ALSO
  XFree(3X11)

  Xlib -- C Language X Interface

Index for Section 3X11

Alphabetical listing for X

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