NAME

       rfio_opendir - open a directory

SYNOPSIS

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

       RDIR *rfio_opendir (const char *path);

DESCRIPTION

       rfio_opendir  opens a directory to be used in subsequent rfio_readdir operations.  A RDIR structure and a
       buffer to cache the directory entries are allocated in the client API.

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

NOTES

       For LCG directories, a multi-threaded application will need to initialize itself the Cthread (LCG  Thread
       Interface)  library  ;  this  is  done  by  including  "shift/Cthread_api.h"  and  calling  the  function
       Cthread_init() at the beginning. Otherwise  accessing  LCG  directories  will  not  be  thread-safe.  See
       Cthread(3).

RETURN VALUE

       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.

ERRORS

       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.

SEE ALSO

       Castor_limits(4), rfio_closedir(3), rfio_readdir(3), rfio_rewinddir(3)

AUTHOR

       LCG Grid Deployment Team