45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk/*
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * CDDL HEADER START
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk *
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * The contents of this file are subject to the terms of the
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * Common Development and Distribution License (the "License").
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * You may not use this file except in compliance with the License.
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk *
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * or http://www.opensolaris.org/os/licensing.
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * See the License for the specific language governing permissions
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * and limitations under the License.
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk *
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * When distributing Covered Code, include this CDDL HEADER in each
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * If applicable, add the following below this CDDL HEADER, with the
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * fields enclosed by brackets "[]" replaced with your own identifying
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * information: Portions Copyright [yyyy] [name of copyright owner]
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk *
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * CDDL HEADER END
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk */
f841f6ad96ea6675d6c6b35c749eaac601799fdfraf
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk/*
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * Use is subject to license terms.
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk */
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#include <door.h>
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#include <errno.h>
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#include <fcntl.h>
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#include <stdio.h>
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#include <stdlib.h>
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#include <synch.h>
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#include <time.h>
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#include <unistd.h>
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#include <sys/param.h>
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#include <sys/stat.h>
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#include <sys/types.h>
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#include "labeld.h"
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#ifndef DEBUG
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#define perror(e)
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#endif /* !DEBUG */
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk/*
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * This is cloned from _nsc_trydoorcall used by the nscd client.
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk *
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * Routine that actually performs the door call.
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * Note that we cache a file descriptor. We do
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * the following to prevent disasters:
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk *
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * 1) Never use 0, 1 or 2; if we get this from the open
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * we dup it upwards.
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk *
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * 2) Set the close on exec flags so descriptor remains available
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * to child processes.
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk *
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * 3) Verify that the door is still the same one we had before
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * by using door_info on the client side.
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk *
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * Note that we never close the file descriptor if it isn't one
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * we allocated; we check this with door info. The rather tricky
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * logic is designed to be fast in the normal case (fd is already
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * allocated and is ok) while handling the case where the application
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * closed it underneath us or where the nscd dies or re-execs itself
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * and we're a multi-threaded application. Note that we cannot protect
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * the application if it closes the fd and it is multi-threaded.
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk *
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * int __call_labeld(label_door_op **dptr, int *ndata, int *adata);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk *
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * *dptr IN: points to arg buffer OUT: points to results buffer
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * *ndata IN: overall size of buffer OUT: overall size of buffer
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * *adata IN: size of call data OUT: size of return data
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk *
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * Note that *dptr may change if provided space as defined by *bufsize is
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * inadequate. In this case the door call mmaps more space and places
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * the answer there and sets dptr to contain a pointer to the space, which
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * should be freed with munmap.
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk *
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * Returns 0 if the door call reached the server, -1 if contact was not made.
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk *
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk */
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpkstatic mutex_t _door_lock = DEFAULTMUTEX;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpkint
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk__call_labeld(labeld_data_t **dptr, size_t *ndata, size_t *adata)
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk{
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk static int doorfd = -1;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk static door_info_t real_door;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk struct stat st;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk door_info_t my_door;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk door_arg_t param;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk char door_name[MAXPATHLEN];
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk struct timespec ts;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk int busy = 0; /* number of busy loops */
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#ifdef DEBUG
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk labeld_data_t *callptr = *dptr;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk int buf_size = *ndata;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk int return_size = *adata;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#endif /* DEBUG */
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk /*
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * the first time in we try and open and validate the door.
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * the validations are that the door must have been
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * created with the label service door cookie and
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * that it has the same door ID. If any of these
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * validations fail we refuse to use the door.
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk */
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk ts.tv_sec = 0; /* initialize nanosecond retry timer */
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk ts.tv_nsec = 100;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) mutex_lock(&_door_lock);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpktry_again:
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if (doorfd == -1) {
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk int tbc[3];
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk int i;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) snprintf(door_name, sizeof (door_name), "%s%s",
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk DOOR_PATH, DOOR_NAME);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if ((doorfd = open64(door_name, O_RDONLY, 0)) < 0) {
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) mutex_unlock(&_door_lock);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk perror("server door open");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk return (NOSERVER);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk }
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk /*
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * dup up the file descriptor if we have 0 - 2
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * to avoid problems with shells stdin/out/err
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk */
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk i = 0;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk while (doorfd < 3) { /* we have a reserved fd */
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk tbc[i++] = doorfd;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if ((doorfd = dup(doorfd)) < 0) {
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk perror("couldn't dup");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk while (i--)
b30a53d02d9bc370d76b8125a98e34311c768b5eRichard Lowe (void) close(tbc[i]);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk doorfd = -1;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) mutex_unlock(&_door_lock);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk return (NOSERVER);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk }
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk }
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk while (i--)
b30a53d02d9bc370d76b8125a98e34311c768b5eRichard Lowe (void) close(tbc[i]);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk /*
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * mark this door descriptor as close on exec
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk */
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) fcntl(doorfd, F_SETFD, FD_CLOEXEC);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if (door_info(doorfd, &real_door) < 0) {
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk /*
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * we should close doorfd because we just opened it
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk */
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk perror("real door door_info");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) close(doorfd);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk doorfd = -1;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) mutex_unlock(&_door_lock);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk return (NOSERVER);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk }
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if (fstat(doorfd, &st) < 0) {
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk perror("real door fstat");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk return (NOSERVER);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk }
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#ifdef DEBUG
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\treal door %s\n", door_name);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\tuid = %d, gid = %d, mode = %o\n", st.st_uid,
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk st.st_gid, st.st_mode);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\toutstanding requests = %d\n", st.st_nlink-1);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t pid = %d\n", real_door.di_target);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t procedure = %llx\n", real_door.di_proc);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t cookie = %llx\n", real_door.di_data);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t attributes = %x\n",
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk real_door.di_attributes);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if (real_door.di_attributes & DOOR_UNREF)
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t\t UNREF\n");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if (real_door.di_attributes & DOOR_PRIVATE)
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t\t PRIVATE\n");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if (real_door.di_attributes & DOOR_LOCAL)
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t\t LOCAL\n");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if (real_door.di_attributes & DOOR_REVOKED)
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t\t REVOKED\n");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if (real_door.di_attributes & DOOR_DESCRIPTOR)
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t\t DESCRIPTOR\n");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if (real_door.di_attributes & DOOR_RELEASE)
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t\t RELEASE\n");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if (real_door.di_attributes & DOOR_DELAY)
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t\t DELAY\n");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t id = %llx\n", real_door.di_uniquifier);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#endif /* DEBUG */
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if ((real_door.di_attributes & DOOR_REVOKED) ||
b30a53d02d9bc370d76b8125a98e34311c768b5eRichard Lowe (real_door.di_data != COOKIE)) {
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#ifdef DEBUG
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("real door revoked\n");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#endif /* DEBUG */
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) close(doorfd);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk doorfd = -1;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) mutex_unlock(&_door_lock);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk return (NOSERVER);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk }
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk } else {
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if ((door_info(doorfd, &my_door) < 0) ||
b30a53d02d9bc370d76b8125a98e34311c768b5eRichard Lowe (my_door.di_data != COOKIE) ||
b30a53d02d9bc370d76b8125a98e34311c768b5eRichard Lowe (my_door.di_uniquifier != real_door.di_uniquifier)) {
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk perror("my door door_info");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk /*
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk * don't close it - someone else has clobbered fd
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk */
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk doorfd = -1;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk goto try_again;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk }
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if (fstat(doorfd, &st) < 0) {
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk perror("my door fstat");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk goto try_again;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk }
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#ifdef DEBUG
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) sprintf(door_name, "%s%s", DOOR_PATH, DOOR_NAME);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\tmy door %s\n", door_name);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\tuid = %d, gid = %d, mode = %o\n", st.st_uid,
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk st.st_gid, st.st_mode);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\toutstanding requests = %d\n", st.st_nlink-1);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t pid = %d\n", my_door.di_target);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t procedure = %llx\n", my_door.di_proc);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t cookie = %llx\n", my_door.di_data);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t attributes = %x\n", my_door.di_attributes);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if (my_door.di_attributes & DOOR_UNREF)
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t\t UNREF\n");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if (my_door.di_attributes & DOOR_PRIVATE)
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t\t PRIVATE\n");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if (my_door.di_attributes & DOOR_LOCAL)
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t\t LOCAL\n");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if (my_door.di_attributes & DOOR_REVOKED)
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t\t REVOKED\n");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if (my_door.di_attributes & DOOR_DESCRIPTOR)
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t\t DESCRIPTOR\n");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if (my_door.di_attributes & DOOR_RELEASE)
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t\t RELEASE\n");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if (my_door.di_attributes & DOOR_DELAY)
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t\t DELAY\n");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\t\t id = %llx\n", my_door.di_uniquifier);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#endif /* DEBUG */
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if (my_door.di_attributes & DOOR_REVOKED) {
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#ifdef DEBUG
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("my door revoked\n");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#endif /* DEBUG */
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) close(doorfd); /* labeld exited .... */
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk doorfd = -1; /* try and restart connection */
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk goto try_again;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk }
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk }
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) mutex_unlock(&_door_lock);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk param.data_ptr = (char *)*dptr;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk param.data_size = *adata;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk param.desc_ptr = NULL;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk param.desc_num = 0;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk param.rbuf = (char *)*dptr;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk param.rsize = *ndata;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if (door_call(doorfd, &param) < 0) {
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if (errno == EAGAIN && busy++ < 10) {
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk /* adjust backoff */
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if ((ts.tv_nsec *= 10) >= NANOSEC) {
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk ts.tv_sec++;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk ts.tv_nsec = 100;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk }
f841f6ad96ea6675d6c6b35c749eaac601799fdfraf (void) nanosleep(&ts, NULL);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#ifdef DEBUG
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("door_call failed EAGAIN # %d\n", busy);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#endif /* DEBUG */
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) mutex_lock(&_door_lock);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk goto try_again;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk }
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk perror("door call");
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk return (NOSERVER);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk }
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk *adata = (int)param.data_size;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk *ndata = (int)param.rsize;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk /*LINTED*/
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk *dptr = (labeld_data_t *)param.data_ptr;
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk if (*adata == 0 || *dptr == NULL) {
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#ifdef DEBUG
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\tNo data returned, size = %lu, dptr = %p\n",
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (unsigned long)*adata, (void *)*dptr);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#endif /* DEBUG */
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk return (NOSERVER);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk }
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#ifdef DEBUG
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("call buf = %x, buf size = %d, call size = %d\n",
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk callptr, buf_size, return_size);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("retn buf = %x, buf size = %d, retn size = %d\n",
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk *dptr, *ndata, *adata);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk (void) printf("\treply status = %d\n", (*dptr)->param.aret.ret);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk#endif /* DEBUG */
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk return ((*dptr)->param.aret.ret);
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk
45916cd2fec6e79bca5dee0421bd39e3c2910d1ejpk} /* __call_labeld */