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download PDF document: XHostAddress.3.pdf

XAddHost(3) XLIB FUNCTIONS XAddHost(3)
NAME XAddHost, XAddHosts, XListHosts, XRemoveHost, XRemoveHosts, XSetAccessControl, XEnableAccessControl, XDisableAccessControl, XHostAddress, XServerInterpretedAddress - control host access and host control structure
SYNTAX 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);
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 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, FamilyInternet6, FamilyServerInterpreted, FamilyDECnet, or FamilyChaos. The length member specifies the length of the address in bytes. The address member specifies a pointer to the address.
For the ServerInterpreted family, the length is ignored and the address member is a pointer to a XServerInterpretedAddress structure which contains:
typedef struct { int typelength; /* length of type string, in bytes */ int valuelength; /* length of value string, in bytes */ char *type; /* pointer to where to find the type string */ char *value; /* pointer to where to find the address */ } XServerInterpretedAddress;
The type and value members point to strings representing the type and value of the server interpreted entry. These strings may not be NULL-
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(3) Xlib - C Language X Interface
X Version 11 libX11 1.8.7 XAddHost(3)