debian man page for dpns_readdir

DPNS_READDIR(3) 					      DPNS Library Functions						   DPNS_READDIR(3)

NAME
       dpns_readdir - read DPNS directory opened by dpns_opendir in the name server

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

       struct dirent *dpns_readdir (dpns_DIR *dirp)

DESCRIPTION
       dpns_readdir  reads the DPNS directory opened by dpns_opendir in the name server.  This routine returns a pointer to a structure containing
       the current directory entry.  dpns_readdir caches a variable number of such entries, depending on the filename size, to minimize the number
       of requests to the name server.

       dirp   specifies the pointer value returned by dpns_opendir.

NOTE
       Only the fields d_name, d_reclen and on some platforms d_namlen are filled.

RETURN VALUE
       This  routine returns a pointer to a structure containing the current directory entry if the operation was successful or NULL if the end of
       the directory was reached or if the operation failed. When the end of the directory is encountered, serrno is not changed. If the operation
       failed, serrno is set appropriately.

       As  dpns_readdir returns a null pointer both at the end of the directory and on error, an application wishing to check for error situations
       should set serrno to 0, then call dpns_readdir, then check serrno and if it is non-zero, assume an error has occurred.

ERRORS
       EBADF	    File descriptor in DIR structure is invalid.

       EFAULT	    dirp is a NULL pointer.

       SECOMERR     Communication error.

       ENSNACT	    Name server is not running or is being shutdown.

SEE ALSO
       dpns_closedir(3), dpns_opendir(3), dpns_rewinddir(3), dirent

AUTHOR
       LCG Grid Deployment Team

DPNS
					       $Date: 2011-06-15 14:25:06 +0200 (Wed, 15 Jun 2011) $				   DPNS_READDIR(3)