XRemoveHost() XRemoveHost()
Name
XRemoveHost - remove a host from the access control list.
Synopsis
XRemoveHost(display, host)
Display *display;
XHostAddress *host;
Arguments
display Specifies a connection to an X server; returned from XOpenDisplay().
host Specifies the network address of the machine to be removed.
Description
XRemoveHost() removes the specified host from the access control list of the connected server. The server must be on the same host as the
process that calls XRemoveHost() in order to change the access control list.
If you remove your own machine from the access control list, you can no longer connect to that server, and there is no way back from this
call other than to log out, edit the access control file, and reset the server. The address data must be a valid address for the type of
network in which the server operates, as specified in the family member.
For TCP/IP, the address should be in network byte order. For the DECnet family, the server performs no automatic swapping on the address
bytes. A Phase IV address is two bytes long. The first byte contains the least significant eight bits of the node number. The second
byte contains the most significant two bits of the node number in the least significant two bits of the byte, and the area in the most sig-
nificant six bits of the byte.
For more information on access control lists, see Volume One, Chapter 15, Other Programming Techniques.
Structures
typedef struct {
int family; /* for example Family Internet */
int length; /* length of address, in bytes */
char *address; /* pointer to where to find the bytes */
} XHostAddress;
/* constants used for family member of XHostAddress */
#define FamilyInternet 0
#define FamilyDECnet 1
#define FamilyChaos 2
Errors
BadAccess
BadValue
See Also
XAddHost(), XAddHosts(), XDisableAccessControl(), XEnableAccessControl(), XListHosts(), XRemoveHosts(), XSetAccessControl().
Xlib - Host Access XRemoveHost()