lfc_getgrpbygid - get group name associated with a given virtual gid
int lfc_getgrpbygid (gid_t gid, char *groupname)
lfc_getgrpbygid gets the group name associated with a given virtual
gid specifies the Virtual Group Id.
points at a buffer to receive the associated group name. The
buffer must be at least 256 characters long.
This routine returns 0 if the operation was successful or -1 if the
operation failed. In the latter case, serrno is set appropriately.
EFAULT groupname is a NULL pointer.
EINVAL This gid does not exist in the internal mapping table.
SENOSHOST Host unknown.
SENOSSERV Service unknown.
SECOMERR Communication error.
ENSNACT Name server is not running or is being shutdown.