572db1408a
The system hostname is now stored in prison0, and the global variable "hostname" has been removed, as has the hostname_mtx mutex. Jails may have their own host information, or they may inherit it from the parent/system. The proper way to read the hostname is via getcredhostname(), which will copy either the hostname associated with the passed cred, or the system hostname if you pass NULL. The system hostname can still be accessed directly (and without locking) at prison0.pr_host, but that should be avoided where possible. The "similar information" referred to is domainname, hostid, and hostuuid, which have also become prison parameters and had their associated global variables removed. Approved by: bz (mentor)
105 lines
2.9 KiB
C
105 lines
2.9 KiB
C
/*-
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* Copyright 2007 John Birrell <jb@FreeBSD.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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*/
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <sys/conf.h>
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#include <sys/cpuvar.h>
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#include <sys/errno.h>
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#include <sys/jail.h>
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#include <sys/kernel.h>
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#include <sys/misc.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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cpu_core_t cpu_core[MAXCPU];
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kmutex_t cpu_lock;
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solaris_cpu_t solaris_cpu[MAXCPU];
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/*
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* OpenSolaris subsystem initialisation.
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*/
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static void
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opensolaris_load(void *dummy)
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{
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int i;
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printf("This module (opensolaris) contains code covered by the\n");
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printf("Common Development and Distribution License (CDDL)\n");
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printf("see http://opensolaris.org/os/licensing/opensolaris_license/\n");
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/*
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* "Enable" all CPUs even though they may not exist just so
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* that the asserts work. On FreeBSD, if a CPU exists, it is
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* enabled.
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*/
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for (i = 0; i < MAXCPU; i++) {
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solaris_cpu[i].cpuid = i;
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solaris_cpu[i].cpu_flags &= CPU_ENABLE;
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}
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mutex_init(&cpu_lock, "OpenSolaris CPU lock", MUTEX_DEFAULT, NULL);
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}
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SYSINIT(opensolaris_register, SI_SUB_OPENSOLARIS, SI_ORDER_FIRST, opensolaris_load, NULL);
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static void
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opensolaris_unload(void)
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{
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mutex_destroy(&cpu_lock);
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}
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SYSUNINIT(opensolaris_unregister, SI_SUB_OPENSOLARIS, SI_ORDER_FIRST, opensolaris_unload, NULL);
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static int
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opensolaris_modevent(module_t mod __unused, int type, void *data __unused)
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{
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int error = 0;
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switch (type) {
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case MOD_LOAD:
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utsname.nodename = prison0.pr_host;
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break;
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case MOD_UNLOAD:
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break;
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case MOD_SHUTDOWN:
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break;
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default:
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error = EOPNOTSUPP;
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break;
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}
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return (error);
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}
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DEV_MODULE(opensolaris, opensolaris_modevent, NULL);
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MODULE_VERSION(opensolaris, 1);
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