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       dpns_opendir - open a DPNS directory, having the specified GUID, in the
       name server


       #include <sys/types.h>
       #include "dpns_api.h"

       dpns_DIR *dpns_opendir (const char *path, const char *guid)

       dpns_DIR *dpns_opendirxg (char *server, const char  *path,  const  char


       dpns_opendir  opens a DPNS directory, having the specified GUID, in the
       name server to  be  used  in  subsequent  dpns_readdir  operations.   A
       dpns_DIR  structure  and  a  buffer  to cache the directory entries are
       allocated in the client API.

       guid   specifies the Grid Unique IDentifier.

       path   specifies the logical pathname  relative  to  the  current  DPNS
              directory or the full DPNS pathname.


       This  routine  returns a pointer to be used in the subsequent directory
       function calls if the operation was successful or NULL if the operation
       failed. In the latter case, serrno is set appropriately.


       ENOENT       A  component  of  path  prefix does not exist or path is a
                    null pathname.

       EACCES       Search permission is denied on a  component  of  the  path
                    prefix or read permission is denied on path.

       EFAULT       path is a NULL pointer.

       EINVAL       The length of the guid component exceeds CA_MAXGUIDLEN.

       ENOTDIR      A component of path prefix is not a directory.

       ENAMETOOLONG The  length of path exceeds CA_MAXPATHLEN or the length of
                    a path component exceeds CA_MAXNAMELEN.

       SENOSHOST    Host unknown.

       SENOSSERV    Service unknown.

       SECOMERR     Communication error.

       ENSNACT      Name server is not running or is being shutdown.


       Castor_limits(4),  dpns_chdir(3),  dpns_closedir(3),   dpns_readdir(3),


       LCG Grid Deployment Team