source: branches/fc17-dev/server/common/oursrc/nss_nonlocal/walk_nss.h @ 2832

{
    static service_user *startp = NULL;
    static void *fct_start = NULL;

    service_user *nip;
    union {
        __typeof__(self) l;
        void *ptr;
    } fct;
    int old_errno = errno;

    if (fct_start == NULL &&
        w.lookup(&startp, w.fct_name, &fct_start) != 0) {
        *w.status = NSS_STATUS_UNAVAIL;
        goto walk_nss_out;
    }

    nip = startp;
    fct.ptr = fct_start;

    if (w.buf != NULL) {
        *w.buf = malloc(*w.buflen);
        errno = old_errno;
        if (*w.buf == NULL) {
            *w.status = NSS_STATUS_TRYAGAIN;
            *w.errnop = ENOMEM;
            goto walk_nss_out;
        }
    }

    do {
    walk_nss_morebuf:
        if (fct.ptr == NULL)
            *w.status = NSS_STATUS_UNAVAIL;
        else if (self != NULL && fct.l == self)
            *w.status = NSS_STATUS_NOTFOUND;
        else
            *w.status = DL_CALL_FCT(fct.l, args);
        if (*w.status == NSS_STATUS_TRYAGAIN &&
            w.errnop != NULL && *w.errnop == ERANGE) {
            if (w.buf == NULL)
                break;
            free(*w.buf);
            *w.buflen *= 2;
            *w.buf = malloc(*w.buflen);
            errno = old_errno;
            if (*w.buf == NULL) {
                *w.errnop = ENOMEM;
                goto walk_nss_out;
            }
            goto walk_nss_morebuf;
        }
    } while (__nss_next(&nip, w.fct_name, &fct.ptr, *w.status, 0) == 0);

    if (w.buf != NULL && *w.status != NSS_STATUS_SUCCESS) {
        free(*w.buf);
        *w.buf = NULL;
    }

 walk_nss_out:
    ;
}