/* 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;
}
/*
* 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);
}
/*
* 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");
}