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    Command:

    Xau

    
           X authority database routines
    
    
    

    SYNOPSIS

           #include <X11/Xauth.h>
    
           typedef struct xauth {
                unsigned short family;
                unsigned short address_length;
                char           *address;
                unsigned short number_length;
                char           *number;
                unsigned short name_length;
                char           *name;
                unsigned short data_length;
                char           *data;
           } Xauth;
    
           char *XauFileName (void);
    
           Xauth *XauReadAuth (FILE *auth_file);
    
           int XauWriteAuth (FILE *auth_file, Xauth *auth);
    
           Xauth *XauGetAuthByAddr (unsigned short family, unsigned short
                  address_length, const char *address, unsigned short
                  number_length, const char *number, unsigned short
                  name_length, const char *name);
    
           Xauth *XauGetBestAuthByAddr (unsigned short family, unsigned short
                  address_length, const char *address, unsigned short
                  number_length, const char *number, int types_length,
                  char **types, const int *type_lengths);
    
           int XauLockAuth (const char *file_name, int retries, int
                  timeout, long dead);
    
           int XauUnlockAuth (const char *file_name);
    
           int XauDisposeAuth (Xauth *auth);
    
    
    

    DESCRIPTION

           XauFileName  generates  the  default  authorization  file name by first
           checking the XAUTHORITY environment variable if set,  else  it  returns
           $HOME/.Xauthority.  This name is statically allocated and should not be
           freed.
    
           XauReadAuth reads the next entry from  auth_file.   The  entry  is  not
           statically allocated and should be freed by calling XauDisposeAuth.
    
           XauWriteAuth  writes an authorization entry to auth_file.  It returns 1
           on success, 0 on failure.
           rization file.  First it makes two file names, one with ''-c'' appended
           to file_name, the other with  ''-l''  appended.   If  the  ''-c''  file
           already  exists  and is more than dead seconds old, XauLockAuth removes
           it and the associated ''-l'' file.  To prevent possible synchronization
           troubles with NFS, a dead value of zero forces the files to be removed.
           XauLockAuth makes retries attempts to create and link the  file  names,
           pausing  timeout  seconds  between each attempt.  XauLockAuth returns a
           collection of values depending on the results:
    
                LOCK_ERROR     A system error occurred, either a file_name
                               which is too long, or an unexpected failure from
                               a system call.  errno may prove useful.
    
                LOCK_TIMEOUT   retries attempts failed
    
                LOCK_SUCCESS   The lock succeeded.
    
           XauUnlockAuth undoes the work of  XauLockAuth  by  unlinking  both  the
           ''-c'' and ''-l'' file names.
    
           XauDisposeAuth  frees storage allocated to hold an authorization entry.
    
    
    

    SEE ALSO

           xauth(1), xdm(1)
    
    
    

    AUTHOR

           Keith Packard, MIT X Consortium
    
    
    

    X Version 11 libXau 1.0.6 Xau(3)

    
    
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