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NAME

       lfc_readdir  -  read  LFC  directory  opened by lfc_opendir in the name
       server

SYNOPSIS

       #include <sys/types.h>
       #include <dirent.h>
       #include "lfc_api.h"

       struct dirent *lfc_readdir (lfc_DIR *dirp)

DESCRIPTION

       lfc_readdir reads the LFC directory opened by lfc_opendir in  the  name
       server.   This  routine returns a pointer to a structure containing the
       current directory entry.  lfc_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 lfc_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  lfc_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 lfc_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.

       SENOSHOST    Host unknown.

       SENOSSERV    Service unknown.

       SECOMERR     Communication error.

       ENSNACT      Name server is not running or is being shutdown.

SEE ALSO

       lfc_closedir(3), lfc_opendirg(3), lfc_rewinddir(3), dirent

AUTHOR

       LCG Grid Deployment Team