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       dpns_opendir - open a DPNS directory in the name server


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

       dpns_DIR *dpns_opendir (const char *path)


       dpns_opendir  opens  a  DPNS directory 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.

       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.

       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), dpns_readdirx(3), dpns_rewinddir(3)


       LCG Grid Deployment Team