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