bionic (3) lfc_readdirc.3.gz

NAME

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

SYNOPSIS

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

       struct lfc_direncomm *lfc_readdirc (lfc_DIR *dirp)

DESCRIPTION

       lfc_readdirc  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  including  the  comment  associated.
       lfc_readdirc  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.

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_readdirc  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_readdirc, 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

       lfc_closedir(3), lfc_opendirg(3), lfc_rewinddir(3), lfc_setcomment (3)

AUTHOR

       LCG Grid Deployment Team