lfc_getusrbyuid - get user name associated with a given virtual uid
int lfc_getusrbyuid (uid_t uid, char *username)
lfc_getusrbyuid gets the user name associated with a given virtual uid.
uid specifies the Virtual User Id.
points at a buffer to receive the associated user 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 username is a NULL pointer.
EINVAL This uid 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.