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.