Manual Pages for UNIX Operating System command usage for man XAddHosts

XLIB FUNCTIONS                                     XAddHost(3x11)



NAME
     XAddHost, XAddHosts, XListHosts, XRemoveHost, XRemoveHosts,
     XSetAccessControl, XEnableAccessControl, XDisableAccessCon-
     trol, XHostAddress, XServerInterpretedAddress - control host
     access and host control structure

SYNTAX
     cc [ flag... ] file... -lX11 [ library... ]

     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



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XLIB FUNCTIONS                                     XAddHost(3x11)



     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 BadAc-
     cess 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.





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XLIB FUNCTIONS                                     XAddHost(3x11)



     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 FamilyInter-
     net, 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 XServerInterpretedAd-
     dress 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-terminated so care should be used
     when accessing them.  The typelength and valuelength members
     specify the length in byte of the type and value strings.

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 gen-
               erate this error.

SEE ALSO
     XFree(3x11)
     Xlib - C Language X Interface





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XLIB FUNCTIONS                                     XAddHost(3x11)



ATTRIBUTES
     See attributes(5) for descriptions of the following attri-
     butes:

     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Availability                | x11/library/libx11          |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|
    | MT-Level                    | See XInitThreads(3X11)      |
    |_____________________________|_____________________________|










































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