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Table of Contents
XAddHost, XAddHosts, XListHosts,
XRemoveHost, XRemoveHosts, XSetAccessControl, XEnableAccessControl, XDisableAccessControl,
XHostAddress - control host access and host control structure
- int
XAddHost(Display *display, XHostAddress *host);
- int XAddHosts(Display
*display, XHostAddress *hosts,
- int num_hosts);
- XHostAddress *XListHosts(Display
*display, int *nhosts_return,
- Bool state_return);
- int XRemoveHost(Display
*display, XHostAddress *host);
- int XRemoveHosts(Display *display, XHostAddress
*hosts, int num_hosts);
- int XSetAccessControl(Display *display, int mode);
- int XEnableAccessControl(Display *display);
- int XDisableAccessControl(Display
*display);
- 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.
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.
The XHostAddress structure
contains:
0
0>=40 .vs 0u
0<=39 .vs 0p
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.
- 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.
XFree(3X11)
Xlib - C Language X Interface
Table of Contents
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