d62bc4badc1c1f1549c961cfb8b420e650e1272byz/*
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * CDDL HEADER START
d62bc4badc1c1f1549c961cfb8b420e650e1272byz *
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * The contents of this file are subject to the terms of the
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * Common Development and Distribution License (the "License").
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * You may not use this file except in compliance with the License.
d62bc4badc1c1f1549c961cfb8b420e650e1272byz *
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * or http://www.opensolaris.org/os/licensing.
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * See the License for the specific language governing permissions
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * and limitations under the License.
d62bc4badc1c1f1549c961cfb8b420e650e1272byz *
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * When distributing Covered Code, include this CDDL HEADER in each
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * If applicable, add the following below this CDDL HEADER, with the
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * fields enclosed by brackets "[]" replaced with your own identifying
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * information: Portions Copyright [yyyy] [name of copyright owner]
d62bc4badc1c1f1549c961cfb8b420e650e1272byz *
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * CDDL HEADER END
d62bc4badc1c1f1549c961cfb8b420e650e1272byz */
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byz/*
634e26ec75c89095090605284938356a3145f2b8Casper H.S. Dik * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * Use is subject to license terms.
d62bc4badc1c1f1549c961cfb8b420e650e1272byz */
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byz/*
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * The dlmgmtd daemon is started by the datalink-management SMF service.
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * This daemon is used to manage <link name, linkid> mapping and the
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * persistent datalink configuration.
d62bc4badc1c1f1549c961cfb8b420e650e1272byz *
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * Today, the <link name, linkid> mapping and the persistent configuration
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * of datalinks is kept in /etc/dladm/datalink.conf, and the daemon keeps
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * a copy of the datalinks in the memory (see dlmgmt_id_avl and
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * dlmgmt_name_avl). The active <link name, linkid> mapping is kept in
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz * /etc/svc/volatile/dladm cache file, so that the mapping can be recovered
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz * when dlmgmtd exits for some reason (e.g., when dlmgmtd is accidentally
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz * killed).
d62bc4badc1c1f1549c961cfb8b420e650e1272byz */
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byz#include <assert.h>
d62bc4badc1c1f1549c961cfb8b420e650e1272byz#include <errno.h>
d62bc4badc1c1f1549c961cfb8b420e650e1272byz#include <fcntl.h>
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy#include <priv.h>
d62bc4badc1c1f1549c961cfb8b420e650e1272byz#include <signal.h>
d62bc4badc1c1f1549c961cfb8b420e650e1272byz#include <stdlib.h>
d62bc4badc1c1f1549c961cfb8b420e650e1272byz#include <stdio.h>
d62bc4badc1c1f1549c961cfb8b420e650e1272byz#include <strings.h>
d62bc4badc1c1f1549c961cfb8b420e650e1272byz#include <syslog.h>
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy#include <zone.h>
d62bc4badc1c1f1549c961cfb8b420e650e1272byz#include <sys/dld.h>
82a2fc4751cef28c0bdc327d02012bf8796083b9James Carlson#include <sys/dld_ioc.h>
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz#include <sys/param.h>
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz#include <sys/stat.h>
d62bc4badc1c1f1549c961cfb8b420e650e1272byz#include <unistd.h>
4ac67f0276a8313b5cefec38af347b94b7bfb526Anurag S. Maskey#include <libdladm_impl.h>
d62bc4badc1c1f1549c961cfb8b420e650e1272byz#include <libdlmgmt.h>
d62bc4badc1c1f1549c961cfb8b420e650e1272byz#include "dlmgmt_impl.h"
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byzconst char *progname;
d62bc4badc1c1f1549c961cfb8b420e650e1272byzboolean_t debug;
d62bc4badc1c1f1549c961cfb8b420e650e1272byzstatic int pfds[2];
4ac67f0276a8313b5cefec38af347b94b7bfb526Anurag S. Maskey/*
4ac67f0276a8313b5cefec38af347b94b7bfb526Anurag S. Maskey * This file descriptor to DLMGMT_DOOR cannot be in the libdladm
4ac67f0276a8313b5cefec38af347b94b7bfb526Anurag S. Maskey * handle because the door isn't created when the handle is created.
4ac67f0276a8313b5cefec38af347b94b7bfb526Anurag S. Maskey */
d62bc4badc1c1f1549c961cfb8b420e650e1272byzstatic int dlmgmt_door_fd = -1;
4ac67f0276a8313b5cefec38af347b94b7bfb526Anurag S. Maskey
4ac67f0276a8313b5cefec38af347b94b7bfb526Anurag S. Maskey/*
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * This libdladm handle is global so that dlmgmt_upcall_linkprop_init() can
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * pass to libdladm. The handle is opened with "ALL" privileges, before
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * privileges are dropped in dlmgmt_drop_privileges(). It is not able to open
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * DLMGMT_DOOR at that time as it hasn't been created yet. This door in the
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * handle is opened in the first call to dladm_door_fd().
4ac67f0276a8313b5cefec38af347b94b7bfb526Anurag S. Maskey */
4ac67f0276a8313b5cefec38af347b94b7bfb526Anurag S. Maskeydladm_handle_t dld_handle = NULL;
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yzstatic void dlmgmtd_exit(int);
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yzstatic int dlmgmt_init();
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yzstatic void dlmgmt_fini();
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roystatic int dlmgmt_set_privileges();
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byzstatic int
d62bc4badc1c1f1549c961cfb8b420e650e1272byzdlmgmt_set_doorfd(boolean_t start)
d62bc4badc1c1f1549c961cfb8b420e650e1272byz{
d62bc4badc1c1f1549c961cfb8b420e650e1272byz dld_ioc_door_t did;
d62bc4badc1c1f1549c961cfb8b420e650e1272byz int err = 0;
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
4ac67f0276a8313b5cefec38af347b94b7bfb526Anurag S. Maskey assert(dld_handle != NULL);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byz did.did_start_door = start;
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
4ac67f0276a8313b5cefec38af347b94b7bfb526Anurag S. Maskey if (ioctl(dladm_dld_fd(dld_handle), DLDIOC_DOORSERVER, &did) == -1)
d62bc4badc1c1f1549c961cfb8b420e650e1272byz err = errno;
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byz return (err);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz}
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byzstatic int
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roydlmgmt_door_init(void)
d62bc4badc1c1f1549c961cfb8b420e650e1272byz{
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy int err = 0;
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if ((dlmgmt_door_fd = door_create(dlmgmt_handler, NULL,
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy DOOR_REFUSE_DESC | DOOR_NO_CANCEL)) == -1) {
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz err = errno;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy dlmgmt_log(LOG_ERR, "door_create() failed: %s",
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy strerror(err));
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz return (err);
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz }
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy return (err);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy}
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roystatic void
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roydlmgmt_door_fini(void)
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy{
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if (dlmgmt_door_fd == -1)
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy return;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if (door_revoke(dlmgmt_door_fd) == -1) {
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy dlmgmt_log(LOG_WARNING, "door_revoke(%s) failed: %s",
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy DLMGMT_DOOR, strerror(errno));
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy }
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy (void) dlmgmt_set_doorfd(B_FALSE);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy dlmgmt_door_fd = -1;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy}
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Royint
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roydlmgmt_door_attach(zoneid_t zoneid, char *rootdir)
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy{
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy int fd;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy int err = 0;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy char doorpath[MAXPATHLEN];
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy (void) snprintf(doorpath, sizeof (doorpath), "%s%s", rootdir,
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy DLMGMT_DOOR);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy /*
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * Create the door file for dlmgmtd.
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy */
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if ((fd = open(doorpath, O_CREAT|O_RDONLY, 0644)) == -1) {
d62bc4badc1c1f1549c961cfb8b420e650e1272byz err = errno;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy dlmgmt_log(LOG_ERR, "open(%s) failed: %s", doorpath,
d62bc4badc1c1f1549c961cfb8b420e650e1272byz strerror(err));
d62bc4badc1c1f1549c961cfb8b420e650e1272byz return (err);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz }
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy (void) close(fd);
6ba597c56d749c61b4f783157f63196d7b2445f0Anurag S. Maskey if (chown(doorpath, UID_DLADM, GID_NETADM) == -1)
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy return (errno);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy
fd4e42c38ba5cb6fa799652cefce71cc10314862Sebastien Roy /*
fd4e42c38ba5cb6fa799652cefce71cc10314862Sebastien Roy * fdetach first in case a previous daemon instance exited
fd4e42c38ba5cb6fa799652cefce71cc10314862Sebastien Roy * ungracefully.
fd4e42c38ba5cb6fa799652cefce71cc10314862Sebastien Roy */
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy (void) fdetach(doorpath);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if (fattach(dlmgmt_door_fd, doorpath) != 0) {
d62bc4badc1c1f1549c961cfb8b420e650e1272byz err = errno;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy dlmgmt_log(LOG_ERR, "fattach(%s) failed: %s", doorpath,
d62bc4badc1c1f1549c961cfb8b420e650e1272byz strerror(err));
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy } else if (zoneid == GLOBAL_ZONEID) {
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if ((err = dlmgmt_set_doorfd(B_TRUE)) != 0) {
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy dlmgmt_log(LOG_ERR, "cannot set kernel doorfd: %s",
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy strerror(err));
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy }
d62bc4badc1c1f1549c961cfb8b420e650e1272byz }
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byz return (err);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz}
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy/*
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * Create the /etc/svc/volatile/dladm/ directory if it doesn't exist, load the
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * datalink.conf data for this zone, and create/attach the door rendezvous
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * file.
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy */
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Royint
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roydlmgmt_zone_init(zoneid_t zoneid)
d62bc4badc1c1f1549c961cfb8b420e650e1272byz{
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy char rootdir[MAXPATHLEN], tmpfsdir[MAXPATHLEN];
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy int err;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy struct stat statbuf;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if (zoneid == GLOBAL_ZONEID) {
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy rootdir[0] = '\0';
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy } else if (zone_getattr(zoneid, ZONE_ATTR_ROOT, rootdir,
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy sizeof (rootdir)) < 0) {
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy return (errno);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy }
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy /*
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * Create the DLMGMT_TMPFS_DIR directory.
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy */
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy (void) snprintf(tmpfsdir, sizeof (tmpfsdir), "%s%s", rootdir,
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy DLMGMT_TMPFS_DIR);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if (stat(tmpfsdir, &statbuf) < 0) {
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if (mkdir(tmpfsdir, (mode_t)0755) < 0)
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy return (errno);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy } else if ((statbuf.st_mode & S_IFMT) != S_IFDIR) {
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy return (ENOTDIR);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz }
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if ((chmod(tmpfsdir, 0755) < 0) ||
6ba597c56d749c61b4f783157f63196d7b2445f0Anurag S. Maskey (chown(tmpfsdir, UID_DLADM, GID_NETADM) < 0)) {
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy return (EPERM);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy }
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if ((err = dlmgmt_db_init(zoneid)) != 0)
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy return (err);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy return (dlmgmt_door_attach(zoneid, rootdir));
d62bc4badc1c1f1549c961cfb8b420e650e1272byz}
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy/*
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * Initialize each running zone.
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy */
d62bc4badc1c1f1549c961cfb8b420e650e1272byzstatic int
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roydlmgmt_allzones_init(void)
d62bc4badc1c1f1549c961cfb8b420e650e1272byz{
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy int err, i;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy zoneid_t *zids = NULL;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy uint_t nzids, nzids_saved;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if (zone_list(NULL, &nzids) != 0)
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy return (errno);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Royagain:
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy nzids *= 2;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if ((zids = malloc(nzids * sizeof (zoneid_t))) == NULL)
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy return (errno);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy nzids_saved = nzids;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if (zone_list(zids, &nzids) != 0) {
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy free(zids);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy return (errno);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy }
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if (nzids > nzids_saved) {
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy free(zids);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy goto again;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy }
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy for (i = 0; i < nzids; i++) {
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if ((err = dlmgmt_zone_init(zids[i])) != 0)
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy break;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy }
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy free(zids);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy return (err);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy}
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roystatic int
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roydlmgmt_init(void)
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy{
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy int err;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy char *fmri, *c;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy char filename[MAXPATHLEN];
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if (dladm_open(&dld_handle) != DLADM_STATUS_OK) {
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy dlmgmt_log(LOG_ERR, "dladm_open() failed");
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy return (EPERM);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy }
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz if (signal(SIGTERM, dlmgmtd_exit) == SIG_ERR ||
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz signal(SIGINT, dlmgmtd_exit) == SIG_ERR) {
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz err = errno;
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz dlmgmt_log(LOG_ERR, "signal() for SIGTERM/INT failed: %s",
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz strerror(err));
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz return (err);
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz }
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy /*
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * First derive the name of the cache file from the FMRI name. This
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * cache name is used to keep active datalink configuration.
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy */
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if (debug) {
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy (void) snprintf(cachefile, MAXPATHLEN, "%s/%s%s",
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy DLMGMT_TMPFS_DIR, progname, ".debug.cache");
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy } else {
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if ((fmri = getenv("SMF_FMRI")) == NULL) {
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy dlmgmt_log(LOG_ERR, "dlmgmtd is an smf(5) managed "
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy "service and should not be run from the command "
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy "line.");
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy return (EINVAL);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy }
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy /*
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * The FMRI name is in the form of
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * svc:/service/service:instance. We need to remove the
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * prefix "svc:/" and replace '/' with '-'. The cache file
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * name is in the form of "service:instance.cache".
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy */
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if ((c = strchr(fmri, '/')) != NULL)
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy c++;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy else
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy c = fmri;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy (void) snprintf(filename, MAXPATHLEN, "%s.cache", c);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy c = filename;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy while ((c = strchr(c, '/')) != NULL)
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy *c = '-';
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy (void) snprintf(cachefile, MAXPATHLEN, "%s/%s",
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy DLMGMT_TMPFS_DIR, filename);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy }
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy dlmgmt_linktable_init();
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if ((err = dlmgmt_door_init()) != 0)
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy goto done;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy /*
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * Load datalink configuration and create dlmgmtd door files for all
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * currently running zones.
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy */
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if ((err = dlmgmt_allzones_init()) != 0)
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy dlmgmt_door_fini();
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roydone:
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if (err != 0)
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy dlmgmt_linktable_fini();
d62bc4badc1c1f1549c961cfb8b420e650e1272byz return (err);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz}
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byzstatic void
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roydlmgmt_fini(void)
d62bc4badc1c1f1549c961cfb8b420e650e1272byz{
d62bc4badc1c1f1549c961cfb8b420e650e1272byz dlmgmt_door_fini();
d62bc4badc1c1f1549c961cfb8b420e650e1272byz dlmgmt_linktable_fini();
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if (dld_handle != NULL) {
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy dladm_close(dld_handle);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy dld_handle = NULL;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy }
d62bc4badc1c1f1549c961cfb8b420e650e1272byz}
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byz/*
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * This is called by the child process to inform the parent process to
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * exit with the given return value.
d62bc4badc1c1f1549c961cfb8b420e650e1272byz */
d62bc4badc1c1f1549c961cfb8b420e650e1272byzstatic void
d62bc4badc1c1f1549c961cfb8b420e650e1272byzdlmgmt_inform_parent_exit(int rv)
d62bc4badc1c1f1549c961cfb8b420e650e1272byz{
d62bc4badc1c1f1549c961cfb8b420e650e1272byz if (debug)
d62bc4badc1c1f1549c961cfb8b420e650e1272byz return;
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byz if (write(pfds[1], &rv, sizeof (int)) != sizeof (int)) {
d62bc4badc1c1f1549c961cfb8b420e650e1272byz dlmgmt_log(LOG_WARNING,
d62bc4badc1c1f1549c961cfb8b420e650e1272byz "dlmgmt_inform_parent_exit() failed: %s", strerror(errno));
d62bc4badc1c1f1549c961cfb8b420e650e1272byz (void) close(pfds[1]);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz exit(EXIT_FAILURE);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz }
d62bc4badc1c1f1549c961cfb8b420e650e1272byz (void) close(pfds[1]);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz}
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byz/*ARGSUSED*/
d62bc4badc1c1f1549c961cfb8b420e650e1272byzstatic void
d62bc4badc1c1f1549c961cfb8b420e650e1272byzdlmgmtd_exit(int signo)
d62bc4badc1c1f1549c961cfb8b420e650e1272byz{
d62bc4badc1c1f1549c961cfb8b420e650e1272byz (void) close(pfds[1]);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz dlmgmt_fini();
d62bc4badc1c1f1549c961cfb8b420e650e1272byz exit(EXIT_FAILURE);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz}
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byzstatic void
d62bc4badc1c1f1549c961cfb8b420e650e1272byzusage(void)
d62bc4badc1c1f1549c961cfb8b420e650e1272byz{
d62bc4badc1c1f1549c961cfb8b420e650e1272byz (void) fprintf(stderr, "Usage: %s [-d]\n", progname);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz exit(EXIT_FAILURE);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz}
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz/*
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * Restrict privileges to only those needed.
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz */
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Royint
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roydlmgmt_drop_privileges(void)
d62bc4badc1c1f1549c961cfb8b420e650e1272byz{
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy priv_set_t *pset;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy priv_ptype_t ptype;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy zoneid_t zoneid = getzoneid();
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy int err = 0;
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if ((pset = priv_allocset()) == NULL)
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy return (errno);
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz
0dc974a9a2e66d676505db23524ebff105fb36a9Cathy Zhou /*
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * The global zone needs PRIV_PROC_FORK so that it can fork() when it
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * issues db ops in non-global zones, PRIV_SYS_CONFIG to post
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * sysevents, and PRIV_SYS_DL_CONFIG to initialize link properties in
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * dlmgmt_upcall_linkprop_init().
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy *
634e26ec75c89095090605284938356a3145f2b8Casper H.S. Dik * We remove non-basic privileges from the permitted (and thus
634e26ec75c89095090605284938356a3145f2b8Casper H.S. Dik * effective) set. When executing in a non-global zone, dlmgmtd
634e26ec75c89095090605284938356a3145f2b8Casper H.S. Dik * only needs to read and write to files that it already owns.
0dc974a9a2e66d676505db23524ebff105fb36a9Cathy Zhou */
634e26ec75c89095090605284938356a3145f2b8Casper H.S. Dik priv_basicset(pset);
634e26ec75c89095090605284938356a3145f2b8Casper H.S. Dik (void) priv_delset(pset, PRIV_PROC_EXEC);
634e26ec75c89095090605284938356a3145f2b8Casper H.S. Dik (void) priv_delset(pset, PRIV_PROC_INFO);
634e26ec75c89095090605284938356a3145f2b8Casper H.S. Dik (void) priv_delset(pset, PRIV_PROC_SESSION);
634e26ec75c89095090605284938356a3145f2b8Casper H.S. Dik (void) priv_delset(pset, PRIV_FILE_LINK_ANY);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if (zoneid == GLOBAL_ZONEID) {
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy ptype = PRIV_EFFECTIVE;
634e26ec75c89095090605284938356a3145f2b8Casper H.S. Dik if (priv_addset(pset, PRIV_SYS_CONFIG) == -1 ||
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy priv_addset(pset, PRIV_SYS_DL_CONFIG) == -1)
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy err = errno;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy } else {
634e26ec75c89095090605284938356a3145f2b8Casper H.S. Dik (void) priv_delset(pset, PRIV_PROC_FORK);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy ptype = PRIV_PERMITTED;
d62bc4badc1c1f1549c961cfb8b420e650e1272byz }
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if (err == 0 && setppriv(PRIV_SET, ptype, pset) == -1)
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy err = errno;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roydone:
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy priv_freeset(pset);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy return (err);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy}
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Royint
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roydlmgmt_elevate_privileges(void)
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy{
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy priv_set_t *privset;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy int err = 0;
4ac67f0276a8313b5cefec38af347b94b7bfb526Anurag S. Maskey
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if ((privset = priv_str_to_set("zone", ",", NULL)) == NULL)
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy return (errno);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if (setppriv(PRIV_SET, PRIV_EFFECTIVE, privset) == -1)
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy err = errno;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy priv_freeset(privset);
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy return (err);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz}
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy/*
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * Set the uid of this daemon to the "dladm" user and drop privileges to only
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy * those needed.
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy */
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roystatic int
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roydlmgmt_set_privileges(void)
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz{
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy int err;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy (void) setgroups(0, NULL);
6ba597c56d749c61b4f783157f63196d7b2445f0Anurag S. Maskey if (setegid(GID_NETADM) == -1 || seteuid(UID_DLADM) == -1)
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy err = errno;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy else
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy err = dlmgmt_drop_privileges();
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roydone:
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy return (err);
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz}
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz
d62bc4badc1c1f1549c961cfb8b420e650e1272byz/*
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * Keep the pfds fd open, close other fds.
d62bc4badc1c1f1549c961cfb8b420e650e1272byz */
d62bc4badc1c1f1549c961cfb8b420e650e1272byz/*ARGSUSED*/
d62bc4badc1c1f1549c961cfb8b420e650e1272byzstatic int
d62bc4badc1c1f1549c961cfb8b420e650e1272byzclosefunc(void *arg, int fd)
d62bc4badc1c1f1549c961cfb8b420e650e1272byz{
d62bc4badc1c1f1549c961cfb8b420e650e1272byz if (fd != pfds[1])
d62bc4badc1c1f1549c961cfb8b420e650e1272byz (void) close(fd);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz return (0);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz}
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byzstatic boolean_t
d62bc4badc1c1f1549c961cfb8b420e650e1272byzdlmgmt_daemonize(void)
d62bc4badc1c1f1549c961cfb8b420e650e1272byz{
d62bc4badc1c1f1549c961cfb8b420e650e1272byz pid_t pid;
d62bc4badc1c1f1549c961cfb8b420e650e1272byz int rv;
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byz if (pipe(pfds) < 0) {
d62bc4badc1c1f1549c961cfb8b420e650e1272byz (void) fprintf(stderr, "%s: pipe() failed: %s\n",
d62bc4badc1c1f1549c961cfb8b420e650e1272byz progname, strerror(errno));
d62bc4badc1c1f1549c961cfb8b420e650e1272byz exit(EXIT_FAILURE);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz }
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byz if ((pid = fork()) == -1) {
d62bc4badc1c1f1549c961cfb8b420e650e1272byz (void) fprintf(stderr, "%s: fork() failed: %s\n",
d62bc4badc1c1f1549c961cfb8b420e650e1272byz progname, strerror(errno));
d62bc4badc1c1f1549c961cfb8b420e650e1272byz exit(EXIT_FAILURE);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz } else if (pid > 0) { /* Parent */
d62bc4badc1c1f1549c961cfb8b420e650e1272byz (void) close(pfds[1]);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byz /*
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * Read the child process's return value from the pfds.
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * If the child process exits unexpected, read() returns -1.
d62bc4badc1c1f1549c961cfb8b420e650e1272byz */
d62bc4badc1c1f1549c961cfb8b420e650e1272byz if (read(pfds[0], &rv, sizeof (int)) != sizeof (int)) {
d62bc4badc1c1f1549c961cfb8b420e650e1272byz (void) kill(pid, SIGKILL);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz rv = EXIT_FAILURE;
d62bc4badc1c1f1549c961cfb8b420e650e1272byz }
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byz (void) close(pfds[0]);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz exit(rv);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz }
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byz /* Child */
d62bc4badc1c1f1549c961cfb8b420e650e1272byz (void) close(pfds[0]);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz (void) setsid();
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byz /*
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * Close all files except pfds[1].
d62bc4badc1c1f1549c961cfb8b420e650e1272byz */
d62bc4badc1c1f1549c961cfb8b420e650e1272byz (void) fdwalk(closefunc, NULL);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz (void) chdir("/");
d62bc4badc1c1f1549c961cfb8b420e650e1272byz openlog(progname, LOG_PID, LOG_DAEMON);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz return (B_TRUE);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz}
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byzint
d62bc4badc1c1f1549c961cfb8b420e650e1272byzmain(int argc, char *argv[])
d62bc4badc1c1f1549c961cfb8b420e650e1272byz{
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy int opt, err;
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byz progname = strrchr(argv[0], '/');
d62bc4badc1c1f1549c961cfb8b420e650e1272byz if (progname != NULL)
d62bc4badc1c1f1549c961cfb8b420e650e1272byz progname++;
d62bc4badc1c1f1549c961cfb8b420e650e1272byz else
d62bc4badc1c1f1549c961cfb8b420e650e1272byz progname = argv[0];
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byz /*
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * Process options.
d62bc4badc1c1f1549c961cfb8b420e650e1272byz */
d62bc4badc1c1f1549c961cfb8b420e650e1272byz while ((opt = getopt(argc, argv, "d")) != EOF) {
d62bc4badc1c1f1549c961cfb8b420e650e1272byz switch (opt) {
d62bc4badc1c1f1549c961cfb8b420e650e1272byz case 'd':
d62bc4badc1c1f1549c961cfb8b420e650e1272byz debug = B_TRUE;
d62bc4badc1c1f1549c961cfb8b420e650e1272byz break;
d62bc4badc1c1f1549c961cfb8b420e650e1272byz default:
d62bc4badc1c1f1549c961cfb8b420e650e1272byz usage();
d62bc4badc1c1f1549c961cfb8b420e650e1272byz }
d62bc4badc1c1f1549c961cfb8b420e650e1272byz }
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byz if (!debug && !dlmgmt_daemonize())
d62bc4badc1c1f1549c961cfb8b420e650e1272byz return (EXIT_FAILURE);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy if ((err = dlmgmt_init()) != 0) {
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy dlmgmt_log(LOG_ERR, "unable to initialize daemon: %s",
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy strerror(err));
d62bc4badc1c1f1549c961cfb8b420e650e1272byz goto child_out;
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy } else if ((err = dlmgmt_set_privileges()) != 0) {
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy dlmgmt_log(LOG_ERR, "unable to set daemon privileges: %s",
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy strerror(err));
2b24ab6b3865caeede9eeb9db6b83e1d89dcd1eaSebastien Roy dlmgmt_fini();
d62bc4badc1c1f1549c961cfb8b420e650e1272byz goto child_out;
b9e076dcc05b713d74073c0d692dfbb0f6f2c594yz }
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byz /*
d62bc4badc1c1f1549c961cfb8b420e650e1272byz * Inform the parent process that it can successfully exit.
d62bc4badc1c1f1549c961cfb8b420e650e1272byz */
d62bc4badc1c1f1549c961cfb8b420e650e1272byz dlmgmt_inform_parent_exit(EXIT_SUCCESS);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byz for (;;)
d62bc4badc1c1f1549c961cfb8b420e650e1272byz (void) pause();
d62bc4badc1c1f1549c961cfb8b420e650e1272byz
d62bc4badc1c1f1549c961cfb8b420e650e1272byzchild_out:
d62bc4badc1c1f1549c961cfb8b420e650e1272byz /* return from main() forcibly exits an MT process */
d62bc4badc1c1f1549c961cfb8b420e650e1272byz dlmgmt_inform_parent_exit(EXIT_FAILURE);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz return (EXIT_FAILURE);
d62bc4badc1c1f1549c961cfb8b420e650e1272byz}