XAddHost(3X11)XAddHost(3X11)NAME
XAddHost, XAddHosts, XListHosts, XRemoveHost, XRemoveHosts, XSetAccess‐
Control, 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
Specifies the connection to the X server. Specifies the host that is
to be added or removed. Specifies each host that is to be added or
removed. Specifies the mode. You can pass EnableAccess or DisableAc‐
cess. Returns the number of hosts currently in the access control
list. Specifies the number of hosts. 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 dis‐
abled. 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 con‐
trol 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
A client attempted to modify the access control list from other than
the local (or otherwise authorized) host. 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 argu‐
ment's type is accepted. Any argument defined as a set of alternatives
can generate this error.
SEE ALSOXFree(3X11)
Xlib -- C Language X Interface
XAddHost(3X11)
