Example #1
0
/* Called with kernel funnel held */
void
bsdinit_task(void)
{
	proc_t p = current_proc();
	struct uthread *ut;
	thread_t thread;

	process_name("init", p);

	ux_handler_init();

	thread = current_thread();
	(void) host_set_exception_ports(host_priv_self(),
					EXC_MASK_ALL & ~(EXC_MASK_RPC_ALERT),//pilotfish (shark) needs this port
					(mach_port_t) ux_exception_port,
					EXCEPTION_DEFAULT| MACH_EXCEPTION_CODES,
					0);

	ut = (uthread_t)get_bsdthread_info(thread);

	bsd_init_task = get_threadtask(thread);
	init_task_failure_data[0] = 0;

#if CONFIG_MACF
	mac_cred_label_associate_user(p->p_ucred);
	mac_task_label_update_cred (p->p_ucred, (struct task *) p->task);
#endif
	load_init_program(p);
	lock_trace = 1;
}
Example #2
0
/*
 * fork_create_child
 *
 * Description:	Common operations associated with the creation of a child
 *		process
 *
 * Parameters:	parent_task		parent task
 *		child_proc		child process
 *		inherit_memory		TRUE, if the parents address space is
 *					to be inherited by the child
 *		is64bit			TRUE, if the child being created will
 *					be associated with a 64 bit process
 *					rather than a 32 bit process
 *
 * Note:	This code is called in the fork() case, from the execve() call
 *		graph, if implementing an execve() following a vfork(), from
 *		the posix_spawn() call graph (which implicitly includes a
 *		vfork() equivalent call, and in the system bootstrap case.
 *
 *		It creates a new task and thread (and as a side effect of the
 *		thread creation, a uthread), which is then associated with the
 *		process 'child'.  If the parent process address space is to
 *		be inherited, then a flag indicates that the newly created
 *		task should inherit this from the child task.
 *
 *		As a special concession to bootstrapping the initial process
 *		in the system, it's possible for 'parent_task' to be TASK_NULL;
 *		in this case, 'inherit_memory' MUST be FALSE.
 */
thread_t
fork_create_child(task_t parent_task, proc_t child_proc, int inherit_memory, int is64bit)
{
	thread_t	child_thread = NULL;
	task_t		child_task;
	kern_return_t	result;

	/* Create a new task for the child process */
	result = task_create_internal(parent_task,
					inherit_memory,
					is64bit,
					&child_task);
	if (result != KERN_SUCCESS) {
		printf("execve: task_create_internal failed.  Code: %d\n", result);
		goto bad;
	}

	/* Set the child process task to the new task */
	child_proc->task = child_task;

	/* Set child task process to child proc */
	set_bsdtask_info(child_task, child_proc);

	/* Propagate CPU limit timer from parent */
	if (timerisset(&child_proc->p_rlim_cpu))
		task_vtimer_set(child_task, TASK_VTIMER_RLIM);

	/* Set/clear 64 bit vm_map flag */
	if (is64bit)
		vm_map_set_64bit(get_task_map(child_task));
	else
		vm_map_set_32bit(get_task_map(child_task));

#if CONFIG_MACF
	/* Update task for MAC framework */
	/* valid to use p_ucred as child is still not running ... */
	mac_task_label_update_cred(child_proc->p_ucred, child_task);
#endif

	/*
	 * Set child process BSD visible scheduler priority if nice value
	 * inherited from parent
	 */
	if (child_proc->p_nice != 0)
		resetpriority(child_proc);

	/* Create a new thread for the child process */
	result = thread_create(child_task, &child_thread);
	if (result != KERN_SUCCESS) {
		printf("execve: thread_create failed. Code: %d\n", result);
		task_deallocate(child_task);
		child_task = NULL;
	}
bad:
	thread_yield_internal(1);

	return(child_thread);
}
Example #3
0
/*
 * This function is called very early on in the Mach startup, from the
 * function start_kernel_threads() in osfmk/kern/startup.c.  It's called
 * in the context of the current (startup) task using a call to the
 * function kernel_thread_create() to jump into start_kernel_threads().
 * Internally, kernel_thread_create() calls thread_create_internal(),
 * which calls uthread_alloc().  The function of uthread_alloc() is
 * normally to allocate a uthread structure, and fill out the uu_sigmask,
 * uu_context fields.  It skips filling these out in the case of the "task"
 * being "kernel_task", because the order of operation is inverted.  To
 * account for that, we need to manually fill in at least the contents
 * of the uu_context.vc_ucred field so that the uthread structure can be
 * used like any other.
 */
void
bsd_init(void)
{
	struct uthread *ut;
	unsigned int i;
#if __i386__ || __x86_64__
	int error;
#endif	
	struct vfs_context context;
	kern_return_t	ret;
	struct ucred temp_cred;
	struct posix_cred temp_pcred;
#if NFSCLIENT || CONFIG_IMAGEBOOT
	boolean_t       netboot = FALSE;
#endif

#define bsd_init_kprintf(x...) /* kprintf("bsd_init: " x) */

	kernel_flock = funnel_alloc(KERNEL_FUNNEL);
	if (kernel_flock == (funnel_t *)0 ) {
		panic("bsd_init: Failed to allocate kernel funnel");
	}
        
	printf(copyright);
	
	bsd_init_kprintf("calling kmeminit\n");
	kmeminit();
	
	bsd_init_kprintf("calling parse_bsd_args\n");
	parse_bsd_args();

	/* Initialize kauth subsystem before instancing the first credential */
	bsd_init_kprintf("calling kauth_init\n");
	kauth_init();

	/* Initialize process and pgrp structures. */
	bsd_init_kprintf("calling procinit\n");
	procinit();

	/* Initialize the ttys (MUST be before kminit()/bsd_autoconf()!)*/
	tty_init();

	kernproc = &proc0;	/* implicitly bzero'ed */

	/* kernel_task->proc = kernproc; */
	set_bsdtask_info(kernel_task,(void *)kernproc);

	/* give kernproc a name */
	bsd_init_kprintf("calling process_name\n");
	process_name("kernel_task", kernproc);

	/* allocate proc lock group attribute and group */
	bsd_init_kprintf("calling lck_grp_attr_alloc_init\n");
	proc_lck_grp_attr= lck_grp_attr_alloc_init();

	proc_lck_grp = lck_grp_alloc_init("proc",  proc_lck_grp_attr);
#if CONFIG_FINE_LOCK_GROUPS
	proc_slock_grp = lck_grp_alloc_init("proc-slock",  proc_lck_grp_attr);
	proc_fdmlock_grp = lck_grp_alloc_init("proc-fdmlock",  proc_lck_grp_attr);
	proc_mlock_grp = lck_grp_alloc_init("proc-mlock",  proc_lck_grp_attr);
#endif
	/* Allocate proc lock attribute */
	proc_lck_attr = lck_attr_alloc_init();
#if 0
#if __PROC_INTERNAL_DEBUG
	lck_attr_setdebug(proc_lck_attr);
#endif
#endif

#if CONFIG_FINE_LOCK_GROUPS
	proc_list_mlock = lck_mtx_alloc_init(proc_mlock_grp, proc_lck_attr);
	proc_klist_mlock = lck_mtx_alloc_init(proc_mlock_grp, proc_lck_attr);
	lck_mtx_init(&kernproc->p_mlock, proc_mlock_grp, proc_lck_attr);
	lck_mtx_init(&kernproc->p_fdmlock, proc_fdmlock_grp, proc_lck_attr);
	lck_spin_init(&kernproc->p_slock, proc_slock_grp, proc_lck_attr);
#else
	proc_list_mlock = lck_mtx_alloc_init(proc_lck_grp, proc_lck_attr);
	proc_klist_mlock = lck_mtx_alloc_init(proc_lck_grp, proc_lck_attr);
	lck_mtx_init(&kernproc->p_mlock, proc_lck_grp, proc_lck_attr);
	lck_mtx_init(&kernproc->p_fdmlock, proc_lck_grp, proc_lck_attr);
	lck_spin_init(&kernproc->p_slock, proc_lck_grp, proc_lck_attr);
#endif

	assert(bsd_simul_execs != 0);
	execargs_cache_lock = lck_mtx_alloc_init(proc_lck_grp, proc_lck_attr);
	execargs_cache_size = bsd_simul_execs;
	execargs_free_count = bsd_simul_execs;
	execargs_cache = (vm_offset_t *)kalloc(bsd_simul_execs * sizeof(vm_offset_t));
	bzero(execargs_cache, bsd_simul_execs * sizeof(vm_offset_t));
	
	if (current_task() != kernel_task)
		printf("bsd_init: We have a problem, "
				"current task is not kernel task\n");
	
	bsd_init_kprintf("calling get_bsdthread_info\n");
	ut = (uthread_t)get_bsdthread_info(current_thread());

#if CONFIG_MACF
	/*
	 * Initialize the MAC Framework
	 */
	mac_policy_initbsd();
	kernproc->p_mac_enforce = 0;

#if defined (__i386__) || defined (__x86_64__)
	/*
	 * We currently only support this on i386/x86_64, as that is the
	 * only lock code we have instrumented so far.
	 */
	check_policy_init(policy_check_flags);
#endif
#endif /* MAC */

	/*
	 * Create process 0.
	 */
	proc_list_lock();
	LIST_INSERT_HEAD(&allproc, kernproc, p_list);
	kernproc->p_pgrp = &pgrp0;
	LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash);
	LIST_INIT(&pgrp0.pg_members);
#ifdef CONFIG_FINE_LOCK_GROUPS
	lck_mtx_init(&pgrp0.pg_mlock, proc_mlock_grp, proc_lck_attr);
#else
	lck_mtx_init(&pgrp0.pg_mlock, proc_lck_grp, proc_lck_attr);
#endif
	/* There is no other bsd thread this point and is safe without pgrp lock */
	LIST_INSERT_HEAD(&pgrp0.pg_members, kernproc, p_pglist);
	kernproc->p_listflag |= P_LIST_INPGRP;
	kernproc->p_pgrpid = 0;
	kernproc->p_uniqueid = 0;

	pgrp0.pg_session = &session0;
	pgrp0.pg_membercnt = 1;

	session0.s_count = 1;
	session0.s_leader = kernproc;
	session0.s_listflags = 0;
#ifdef CONFIG_FINE_LOCK_GROUPS
	lck_mtx_init(&session0.s_mlock, proc_mlock_grp, proc_lck_attr);
#else
	lck_mtx_init(&session0.s_mlock, proc_lck_grp, proc_lck_attr);
#endif
	LIST_INSERT_HEAD(SESSHASH(0), &session0, s_hash);
	proc_list_unlock();

#if CONFIG_LCTX
	kernproc->p_lctx = NULL;
#endif

	kernproc->task = kernel_task;
	
	kernproc->p_stat = SRUN;
	kernproc->p_flag = P_SYSTEM;
	kernproc->p_lflag = 0;
	kernproc->p_ladvflag = 0;
	
#if DEVELOPMENT || DEBUG
	if (bootarg_disable_aslr)
		kernproc->p_flag |= P_DISABLE_ASLR;
#endif

	kernproc->p_nice = NZERO;
	kernproc->p_pptr = kernproc;

	TAILQ_INIT(&kernproc->p_uthlist);
	TAILQ_INSERT_TAIL(&kernproc->p_uthlist, ut, uu_list);
	
	kernproc->sigwait = FALSE;
	kernproc->sigwait_thread = THREAD_NULL;
	kernproc->exit_thread = THREAD_NULL;
	kernproc->p_csflags = CS_VALID;

	/*
	 * Create credential.  This also Initializes the audit information.
	 */
	bsd_init_kprintf("calling bzero\n");
	bzero(&temp_cred, sizeof(temp_cred));
	bzero(&temp_pcred, sizeof(temp_pcred));
	temp_pcred.cr_ngroups = 1;

	temp_cred.cr_audit.as_aia_p = audit_default_aia_p;

	bsd_init_kprintf("calling kauth_cred_create\n");
	/*
	 * We have to label the temp cred before we create from it to
	 * properly set cr_ngroups, or the create will fail.
	 */
	posix_cred_label(&temp_cred, &temp_pcred);
	kernproc->p_ucred = kauth_cred_create(&temp_cred); 

	/* update cred on proc */
	PROC_UPDATE_CREDS_ONPROC(kernproc);

	/* give the (already exisiting) initial thread a reference on it */
	bsd_init_kprintf("calling kauth_cred_ref\n");
	kauth_cred_ref(kernproc->p_ucred);
	ut->uu_context.vc_ucred = kernproc->p_ucred;
	ut->uu_context.vc_thread = current_thread();

	TAILQ_INIT(&kernproc->p_aio_activeq);
	TAILQ_INIT(&kernproc->p_aio_doneq);
	kernproc->p_aio_total_count = 0;
	kernproc->p_aio_active_count = 0;

	bsd_init_kprintf("calling file_lock_init\n");
	file_lock_init();

#if CONFIG_MACF
	mac_cred_label_associate_kernel(kernproc->p_ucred);
	mac_task_label_update_cred (kernproc->p_ucred, (struct task *) kernproc->task);
#endif

	/* Create the file descriptor table. */
	filedesc0.fd_refcnt = 1+1;	/* +1 so shutdown will not _FREE_ZONE */
	kernproc->p_fd = &filedesc0;
	filedesc0.fd_cmask = cmask;
	filedesc0.fd_knlistsize = -1;
	filedesc0.fd_knlist = NULL;
	filedesc0.fd_knhash = NULL;
	filedesc0.fd_knhashmask = 0;

	/* Create the limits structures. */
	kernproc->p_limit = &limit0;
	for (i = 0; i < sizeof(kernproc->p_rlimit)/sizeof(kernproc->p_rlimit[0]); i++)
		limit0.pl_rlimit[i].rlim_cur = 
			limit0.pl_rlimit[i].rlim_max = RLIM_INFINITY;
	limit0.pl_rlimit[RLIMIT_NOFILE].rlim_cur = NOFILE;
	limit0.pl_rlimit[RLIMIT_NPROC].rlim_cur = maxprocperuid;
	limit0.pl_rlimit[RLIMIT_NPROC].rlim_max = maxproc;
	limit0.pl_rlimit[RLIMIT_STACK] = vm_initial_limit_stack;
	limit0.pl_rlimit[RLIMIT_DATA] = vm_initial_limit_data;
	limit0.pl_rlimit[RLIMIT_CORE] = vm_initial_limit_core;
	limit0.pl_refcnt = 1;

	kernproc->p_stats = &pstats0;
	kernproc->p_sigacts = &sigacts0;

	/*
	 * Charge root for two  processes: init and mach_init.
	 */
	bsd_init_kprintf("calling chgproccnt\n");
	(void)chgproccnt(0, 1);

	/*
	 *	Allocate a kernel submap for pageable memory
	 *	for temporary copying (execve()).
	 */
	{
		vm_offset_t	minimum;

		bsd_init_kprintf("calling kmem_suballoc\n");
		assert(bsd_pageable_map_size != 0);
		ret = kmem_suballoc(kernel_map,
				&minimum,
				(vm_size_t)bsd_pageable_map_size,
				TRUE,
				VM_FLAGS_ANYWHERE,
				&bsd_pageable_map);
		if (ret != KERN_SUCCESS) 
			panic("bsd_init: Failed to allocate bsd pageable map");
	}

	/*
	 * Initialize buffers and hash links for buffers
	 *
	 * SIDE EFFECT: Starts a thread for bcleanbuf_thread(), so must
	 *		happen after a credential has been associated with
	 *		the kernel task.
	 */
	bsd_init_kprintf("calling bsd_bufferinit\n");
	bsd_bufferinit();

	/* Initialize the execve() semaphore */
	bsd_init_kprintf("calling semaphore_create\n");

	if (ret != KERN_SUCCESS)
		panic("bsd_init: Failed to create execve semaphore");

	/*
	 * Initialize the calendar.
	 */
	bsd_init_kprintf("calling IOKitInitializeTime\n");
	IOKitInitializeTime();

	bsd_init_kprintf("calling ubc_init\n");
	ubc_init();

	/*
	 * Initialize device-switches.
	 */
	bsd_init_kprintf("calling devsw_init() \n");
	devsw_init();

	/* Initialize the file systems. */
	bsd_init_kprintf("calling vfsinit\n");
	vfsinit();

#if SOCKETS
	/* Initialize per-CPU cache allocator */
	mcache_init();

	/* Initialize mbuf's. */
	bsd_init_kprintf("calling mbinit\n");
	mbinit();
	net_str_id_init(); /* for mbuf tags */
#endif /* SOCKETS */

	/*
	 * Initializes security event auditing.
	 * XXX: Should/could this occur later?
	 */
#if CONFIG_AUDIT
	bsd_init_kprintf("calling audit_init\n");
 	audit_init();  
#endif

	/* Initialize kqueues */
	bsd_init_kprintf("calling knote_init\n");
	knote_init();

	/* Initialize for async IO */
	bsd_init_kprintf("calling aio_init\n");
	aio_init();

	/* Initialize pipes */
	bsd_init_kprintf("calling pipeinit\n");
	pipeinit();

	/* Initialize SysV shm subsystem locks; the subsystem proper is
	 * initialized through a sysctl.
	 */
#if SYSV_SHM
	bsd_init_kprintf("calling sysv_shm_lock_init\n");
	sysv_shm_lock_init();
#endif
#if SYSV_SEM
	bsd_init_kprintf("calling sysv_sem_lock_init\n");
	sysv_sem_lock_init();
#endif
#if SYSV_MSG
	bsd_init_kprintf("sysv_msg_lock_init\n");
	sysv_msg_lock_init();
#endif
	bsd_init_kprintf("calling pshm_lock_init\n");
	pshm_lock_init();
	bsd_init_kprintf("calling psem_lock_init\n");
	psem_lock_init();

	pthread_init();
	/* POSIX Shm and Sem */
	bsd_init_kprintf("calling pshm_cache_init\n");
	pshm_cache_init();
	bsd_init_kprintf("calling psem_cache_init\n");
	psem_cache_init();
	bsd_init_kprintf("calling time_zone_slock_init\n");
	time_zone_slock_init();
	bsd_init_kprintf("calling select_wait_queue_init\n");
	select_wait_queue_init();

	/* Stack snapshot facility lock */
	stackshot_lock_init();
	/*
	 * Initialize protocols.  Block reception of incoming packets
	 * until everything is ready.
	 */
	bsd_init_kprintf("calling sysctl_register_fixed\n");
	sysctl_register_fixed(); 
	bsd_init_kprintf("calling sysctl_mib_init\n");
	sysctl_mib_init();
#if NETWORKING
	bsd_init_kprintf("calling dlil_init\n");
	dlil_init();
	bsd_init_kprintf("calling proto_kpi_init\n");
	proto_kpi_init();
#endif /* NETWORKING */
#if SOCKETS
	bsd_init_kprintf("calling socketinit\n");
	socketinit();
	bsd_init_kprintf("calling domaininit\n");
	domaininit();
#endif /* SOCKETS */

	kernproc->p_fd->fd_cdir = NULL;
	kernproc->p_fd->fd_rdir = NULL;

#if CONFIG_FREEZE
	/* Initialise background hibernation */
	bsd_init_kprintf("calling kern_hibernation_init\n");
	kern_hibernation_init();
#endif

#if CONFIG_EMBEDDED
	/* Initialize kernel memory status notifications */
	bsd_init_kprintf("calling kern_memorystatus_init\n");
	kern_memorystatus_init();
#endif

#ifdef GPROF
	/* Initialize kernel profiling. */
	kmstartup();
#endif

	/* kick off timeout driven events by calling first time */
	thread_wakeup(&lbolt);
	timeout(lightning_bolt, 0, hz);

	bsd_init_kprintf("calling bsd_autoconf\n");
	bsd_autoconf();

#if CONFIG_DTRACE
	dtrace_postinit();
#endif

	/*
	 * We attach the loopback interface *way* down here to ensure
	 * it happens after autoconf(), otherwise it becomes the
	 * "primary" interface.
	 */
#include <loop.h>
#if NLOOP > 0
	bsd_init_kprintf("calling loopattach\n");
	loopattach();			/* XXX */
#endif

#if PFLOG
	/* Initialize packet filter log interface */
	pfloginit();
#endif /* PFLOG */

#if NETHER > 0
	/* Register the built-in dlil ethernet interface family */
	bsd_init_kprintf("calling ether_family_init\n");
	ether_family_init();
#endif /* ETHER */

#if NETWORKING
	/* Call any kext code that wants to run just after network init */
	bsd_init_kprintf("calling net_init_run\n");
	net_init_run();
	
	/* register user tunnel kernel control handler */
	utun_register_control();
    netsrc_init();
	
	/* wait for network domain to finish */
	domainfin();
#endif /* NETWORKING */

	bsd_init_kprintf("calling vnode_pager_bootstrap\n");
	vnode_pager_bootstrap();
#if 0
	/* XXX Hack for early debug stop */
	printf("\nabout to sleep for 10 seconds\n");
	IOSleep( 10 * 1000 );
	/* Debugger("hello"); */
#endif

	bsd_init_kprintf("calling inittodr\n");
	inittodr(0);

	/* Mount the root file system. */
	while( TRUE) {
		int err;

		bsd_init_kprintf("calling setconf\n");
		setconf();
#if NFSCLIENT
		netboot = (mountroot == netboot_mountroot);
#endif

		bsd_init_kprintf("vfs_mountroot\n");
		if (0 == (err = vfs_mountroot()))
			break;
		rootdevice[0] = '\0';
#if NFSCLIENT
		if (netboot) {
			PE_display_icon( 0, "noroot");  /* XXX a netboot-specific icon would be nicer */
			vc_progress_set(FALSE, 0);
			for (i=1; 1; i*=2) {
				printf("bsd_init: failed to mount network root, error %d, %s\n",
					err, PE_boot_args());
				printf("We are hanging here...\n");
				IOSleep(i*60*1000);
			}
			/*NOTREACHED*/
		}
#endif
		printf("cannot mount root, errno = %d\n", err);
		boothowto |= RB_ASKNAME;
	}

	IOSecureBSDRoot(rootdevice);

	context.vc_thread = current_thread();
	context.vc_ucred = kernproc->p_ucred;
	mountlist.tqh_first->mnt_flag |= MNT_ROOTFS;

	bsd_init_kprintf("calling VFS_ROOT\n");
	/* Get the vnode for '/'.  Set fdp->fd_fd.fd_cdir to reference it. */
	if (VFS_ROOT(mountlist.tqh_first, &rootvnode, &context))
		panic("bsd_init: cannot find root vnode: %s", PE_boot_args());
	rootvnode->v_flag |= VROOT;
	(void)vnode_ref(rootvnode);
	(void)vnode_put(rootvnode);
	filedesc0.fd_cdir = rootvnode;

#if NFSCLIENT
	if (netboot) {
		int err;

		netboot = TRUE;
		/* post mount setup */
		if ((err = netboot_setup()) != 0) {
			PE_display_icon( 0, "noroot");  /* XXX a netboot-specific icon would be nicer */
			vc_progress_set(FALSE, 0);
			for (i=1; 1; i*=2) {
				printf("bsd_init: NetBoot could not find root, error %d: %s\n",
					err, PE_boot_args());
				printf("We are hanging here...\n");
				IOSleep(i*60*1000);
			}
			/*NOTREACHED*/
		}
	}
#endif
	

#if CONFIG_IMAGEBOOT
	/*
	 * See if a system disk image is present. If so, mount it and
	 * switch the root vnode to point to it
	 */ 
	if (netboot == FALSE && imageboot_needed()) {
		/* 
		 * An image was found.  No turning back: we're booted
		 * with a kernel from the disk image.
		 */
		imageboot_setup(); 
	}
#endif /* CONFIG_IMAGEBOOT */
  
	/* set initial time; all other resource data is  already zero'ed */
	microtime(&kernproc->p_start);
	kernproc->p_stats->p_start = kernproc->p_start;	/* for compat */

#if DEVFS
	{
	    char mounthere[] = "/dev";	/* !const because of internal casting */

	    bsd_init_kprintf("calling devfs_kernel_mount\n");
	    devfs_kernel_mount(mounthere);
	}
#endif /* DEVFS */
	
	/* Initialize signal state for process 0. */
	bsd_init_kprintf("calling siginit\n");
	siginit(kernproc);

	bsd_init_kprintf("calling bsd_utaskbootstrap\n");
	bsd_utaskbootstrap();

#if defined(__LP64__)
	kernproc->p_flag |= P_LP64;
	printf("Kernel is LP64\n");
#endif

	pal_kernel_announce();

#if __i386__ || __x86_64__
	/* this should be done after the root filesystem is mounted */
	error = set_archhandler(kernproc, CPU_TYPE_POWERPC);
	if (error) /* XXX make more generic */
		exec_archhandler_ppc.path[0] = 0;
#endif	

	bsd_init_kprintf("calling mountroot_post_hook\n");

	/* invoke post-root-mount hook */
	if (mountroot_post_hook != NULL)
		mountroot_post_hook();

#if 0 /* not yet */
	consider_zone_gc(FALSE);
#endif

	bsd_init_kprintf("done\n");
}