X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/43866e378188c25dd1e2208016ab3cbeb086ae6c..cc9f6e38162d3c1bf6ca97536c2477f476c8e01b:/bsd/kern/bsd_init.c diff --git a/bsd/kern/bsd_init.c b/bsd/kern/bsd_init.c index 7b4a41efb..a0d66765f 100644 --- a/bsd/kern/bsd_init.c +++ b/bsd/kern/bsd_init.c @@ -1,24 +1,21 @@ /* - * Copyright (c) 2000-2001 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * - * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. + * The contents of this file constitute Original Code as defined in and + * are subject to the Apple Public Source License Version 1.1 (the + * "License"). You may not use this file except in compliance with the + * License. Please obtain a copy of the License at + * http://www.apple.com/publicsource and read it before using this file. * - * This file contains Original Code and/or Modifications of Original Code - * as defined in and that are subject to the Apple Public Source License - * Version 2.0 (the 'License'). You may not use this file except in - * compliance with the License. Please obtain a copy of the License at - * http://www.opensource.apple.com/apsl/ and read it before using this - * file. - * - * The Original Code and all software distributed under the License are - * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * This Original Code and all software distributed under the License are + * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. - * Please see the License for the specific language governing rights and - * limitations under the License. + * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the + * License for the specific language governing rights and limitations + * under the License. * * @APPLE_LICENSE_HEADER_END@ */ @@ -69,31 +66,29 @@ * All rights reserved. The CMU software License Agreement specifies * the terms and conditions for use and redistribution. */ -/* - * HISTORY - * 16-Apr-98 A. Ramesh at Apple - * Created for Apple Core from DR2 init_main.c. - */ - -#include #include #include #include -#include -#include +#include +#include +#include #include -#include +#include #include -#include +#include #include #include -#include +#include +#include +#include + +#include #include #include -#include +#include #include #include #include @@ -103,11 +98,11 @@ #include #include -#include +#include /* for ux_exception_port */ #include #include -#include +#include /* for pseudo_inits */ #include #include @@ -120,11 +115,14 @@ #include #include -extern shared_region_mapping_t system_shared_region; +#include + extern int app_profile; /* on/off switch for pre-heat cache */ char copyright[] = -"Copyright (c) 1982, 1986, 1989, 1991, 1993\n\tThe Regents of the University of California. All rights reserved.\n\n"; +"Copyright (c) 1982, 1986, 1989, 1991, 1993\n\t" +"The Regents of the University of California. " +"All rights reserved.\n\n"; extern void ux_handler(); @@ -132,7 +130,6 @@ extern void ux_handler(); struct proc proc0; struct session session0; struct pgrp pgrp0; -struct pcred cred0; struct filedesc filedesc0; struct plimit limit0; struct pstats pstats0; @@ -144,6 +141,7 @@ long tk_nin; long tk_nout; long tk_rawcc; +int lock_trace = 0; /* Global variables to make pstat happy. We do swapping differently */ int nswdev, nswap; int nswapmap; @@ -155,12 +153,14 @@ dev_t dumpdev; /* device to take dumps on */ long dumplo; /* offset into dumpdev */ long hostid; char hostname[MAXHOSTNAMELEN]; -int hostnamelen; +int hostnamelen; char domainname[MAXDOMNAMELEN]; -int domainnamelen; +int domainnamelen; +char classichandler[32] = {0}; +uint32_t classichandler_fsid = -1L; +long classichandler_fileid = -1L; char rootdevice[16]; /* hfs device names have at least 9 chars */ -struct timeval boottime; /* GRODY! This has to go... */ #ifdef KMEMSTATS struct kmemstats kmemstats[M_LAST]; @@ -170,7 +170,7 @@ int lbolt; /* awoken once a second */ struct vnode *rootvp; int boothowto = RB_DEBUG; -#define BSD_PAGABLE_MAP_SIZE (4 * 512 * 1024) +#define BSD_PAGABLE_MAP_SIZE (16 * 512 * 1024) vm_map_t bsd_pageable_map; vm_map_t mb_map; semaphore_t execve_semaphore; @@ -182,11 +182,17 @@ extern int bsd_hardclockinit; extern task_t bsd_init_task; extern char init_task_failure_data[]; extern void time_zone_slock_init(void); +static void process_name(char *, struct proc *); + +static void setconf(void); + +funnel_t *kernel_flock; -funnel_t * kernel_flock; -funnel_t * network_flock; -int disable_funnel = 0; /* disables split funnel */ -int enable_funnel = 0; /* disables split funnel */ +extern void sysv_shm_lock_init(void); +extern void sysv_sem_lock_init(void); +extern void sysv_msg_lock_init(void); +extern void pshm_lock_init(); +extern void psem_lock_init(); /* * Initialization code. @@ -194,20 +200,17 @@ int enable_funnel = 0; /* disables split funnel */ * soon as a stack and segmentation * have been established. * Functions: - * clear and free user core * turn on clock * hand craft 0th process * call all initialization routines - * fork - process 0 to schedule - * - process 1 execute bootstrap - * - process 2 to page out + * hand craft 1st user process */ /* * Sets the name for the given task. */ -void -proc_name(s, p) +static void +process_name(s, p) char *s; struct proc *p; { @@ -224,42 +227,47 @@ struct rlimit vm_initial_limit_stack = { DFLSSIZ, MAXSSIZ }; struct rlimit vm_initial_limit_data = { DFLDSIZ, MAXDSIZ }; struct rlimit vm_initial_limit_core = { DFLCSIZ, MAXCSIZ }; -extern thread_t first_thread; -extern thread_act_t cloneproc(struct proc *, int); -extern int (*mountroot) __P((void)); +extern thread_t cloneproc(struct proc *, int); +extern int (*mountroot)(void); extern int netboot_mountroot(); /* netboot.c */ extern int netboot_setup(struct proc * p); +lck_grp_t * proc_lck_grp; +lck_grp_attr_t * proc_lck_grp_attr; +lck_attr_t * proc_lck_attr; + /* hook called after root is mounted XXX temporary hack */ void (*mountroot_post_hook)(void); +/* + * 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_act, and uu_ucred 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 uu_cred field so that the uthread structure can be used like any + * other. + */ void bsd_init() { register struct proc *p; - extern struct ucred *rootcred; + struct uthread *ut; + extern kauth_cred_t rootcred; register int i; int s; thread_t th; + struct vfs_context context; void lightning_bolt(void ); kern_return_t ret; boolean_t funnel_state; - extern void uthread_zone_init(); - - - -#if 1 - /* split funnel is enabled by default */ - PE_parse_boot_arg("dfnl", &disable_funnel); -#else - /* split funnel is disabled befault */ - disable_funnel = 1; - PE_parse_boot_arg("efnl", &enable_funnel); - if (enable_funnel) { - /* enable only if efnl is set in bootarg */ - disable_funnel = 0; - } -#endif + struct ucred temp_cred; + extern void file_lock_init(void); kernel_flock = funnel_alloc(KERNEL_FUNNEL); if (kernel_flock == (funnel_t *)0 ) { @@ -268,29 +276,19 @@ bsd_init() funnel_state = thread_funnel_set(kernel_flock, TRUE); - if (!disable_funnel) { - network_flock = funnel_alloc(NETWORK_FUNNEL); - if (network_flock == (funnel_t *)0 ) { - panic("bsd_init: Failed to allocate network funnel"); - } - } else { - network_flock = kernel_flock; - } - printf(copyright); - + kmeminit(); parse_bsd_args(); - bsd_bufferinit(); - /* Initialize the uthread zone */ - uthread_zone_init(); + //uthread_zone_init(); /* XXX redundant: previous uthread_alloc() */ - /* - * Initialize process and pgrp structures. - */ + /* Initialize kauth subsystem before instancing the first credential */ + kauth_init(); + + /* Initialize process and pgrp structures. */ procinit(); kernproc = &proc0; @@ -302,12 +300,29 @@ bsd_init() p->p_pid = 0; /* give kernproc a name */ - proc_name("kernel_task", p); + process_name("kernel_task", p); + + + /* allocate proc lock group attribute and group */ + proc_lck_grp_attr= lck_grp_attr_alloc_init(); + lck_grp_attr_setstat(proc_lck_grp_attr); + + proc_lck_grp = lck_grp_alloc_init("proc", proc_lck_grp_attr); + + + /* Allocate proc lock attribute */ + proc_lck_attr = lck_attr_alloc_init(); + //lck_attr_setdebug(proc_lck_attr); + + lck_mtx_init(&p->p_mlock, proc_lck_grp, proc_lck_attr); + lck_mtx_init(&p->p_fdmlock, proc_lck_grp, proc_lck_attr); if (current_task() != kernel_task) printf("bsd_init: We have a problem, " "current task is not kernel task\n"); + ut = (uthread_t)get_bsdthread_info(current_thread()); + /* * Create process 0. */ @@ -324,7 +339,7 @@ bsd_init() p->task = kernel_task; p->p_stat = SRUN; - p->p_flag = P_INMEM|P_SYSTEM; + p->p_flag = P_SYSTEM; p->p_nice = NZERO; p->p_pptr = p; lockinit(&p->signal_lock, PVM, "signal", 0, 0); @@ -333,17 +348,35 @@ bsd_init() p->sigwait_thread = THREAD_NULL; p->exit_thread = THREAD_NULL; - /* Create credentials. */ - lockinit(&cred0.pc_lock, PLOCK, "proc0 cred", 0, 0); - cred0.p_refcnt = 1; - p->p_cred = &cred0; - p->p_ucred = crget(); - p->p_ucred->cr_ngroups = 1; /* group 0 */ + /* + * Create credential. This also Initializes the audit information. + * XXX It is not clear what the initial values should be for audit ID, + * XXX session ID, etc.. + */ + bzero(&temp_cred, sizeof(temp_cred)); + temp_cred.cr_ngroups = 1; + + p->p_ucred = kauth_cred_create(&temp_cred); + + /* give the (already exisiting) initial thread a reference on it */ + kauth_cred_ref(p->p_ucred); + ut->uu_ucred = p->p_ucred; + + TAILQ_INIT(&p->aio_activeq); + TAILQ_INIT(&p->aio_doneq); + p->aio_active_count = 0; + p->aio_done_count = 0; + + file_lock_init(); /* Create the file descriptor table. */ filedesc0.fd_refcnt = 1+1; /* +1 so shutdown will not _FREE_ZONE */ p->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. */ p->p_limit = &limit0; @@ -352,6 +385,7 @@ bsd_init() limit0.pl_rlimit[i].rlim_max = RLIM_INFINITY; limit0.pl_rlimit[RLIMIT_NOFILE].rlim_cur = NOFILE; limit0.pl_rlimit[RLIMIT_NPROC].rlim_cur = MAXUPRC; + 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; @@ -361,7 +395,7 @@ bsd_init() p->p_sigacts = &sigacts0; /* - * Charge root for one process. + * Charge root for two processes: init and mach_init. */ (void)chgproccnt(0, 1); @@ -376,12 +410,21 @@ bsd_init() &min, (vm_size_t)BSD_PAGABLE_MAP_SIZE, TRUE, - 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_bufferinit(); + /* Initialize the execve() semaphore */ ret = semaphore_create(kernel_task, &execve_semaphore, SYNC_POLICY_FIFO, (BSD_PAGABLE_MAP_SIZE / NCARGS)); @@ -401,8 +444,29 @@ bsd_init() /* Initialize mbuf's. */ mbinit(); - /* Initialize syslog */ - log_init(); + /* + * Initializes security event auditing. + * XXX: Should/could this occur later? + */ + audit_init(); + + /* Initialize kqueues */ + knote_init(); + + /* Initialize for async IO */ + aio_init(); + + /* Initialize pipes */ + pipeinit(); + + /* Initialize SysV shm subsystem locks; the subsystem proper is + * initialized through a sysctl. + */ + sysv_shm_lock_init(); + sysv_sem_lock_init(); + sysv_msg_lock_init(); + pshm_lock_init(); + psem_lock_init(); /* POSIX Shm and Sem */ pshm_cache_init(); @@ -413,13 +477,12 @@ bsd_init() * Initialize protocols. Block reception of incoming packets * until everything is ready. */ - s = splimp(); sysctl_register_fixed(); sysctl_mib_init(); dlil_init(); + proto_kpi_init(); socketinit(); domaininit(); - splx(s); p->p_fd->fd_cdir = NULL; p->p_fd->fd_rdir = NULL; @@ -431,7 +494,7 @@ bsd_init() /* kick off timeout driven events by calling first time */ thread_wakeup(&lbolt); - timeout(lightning_bolt,0,hz); + timeout((void (*)(void *))lightning_bolt, 0, hz); bsd_autoconf(); @@ -448,42 +511,53 @@ bsd_init() /* Register the built-in dlil ethernet interface family */ ether_family_init(); + /* Call any kext code that wants to run just after network init */ + net_init_run(); + 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 + + inittodr(0); /* Mount the root file system. */ while( TRUE) { int err; setconf(); - /* - * read the time after clock_initialize_calendar() - * and before nfs mount - */ - microtime(&time); - bsd_hardclockinit = -1; /* start ticking */ if (0 == (err = vfs_mountroot())) break; +#if NFSCLIENT if (mountroot == netboot_mountroot) { printf("cannot mount network root, errno = %d\n", err); mountroot = NULL; if (0 == (err = vfs_mountroot())) break; } +#endif printf("cannot mount root, errno = %d\n", err); boothowto |= RB_ASKNAME; } - mountlist.cqh_first->mnt_flag |= MNT_ROOTFS; + context.vc_proc = p; + context.vc_ucred = p->p_ucred; + mountlist.tqh_first->mnt_flag |= MNT_ROOTFS; /* Get the vnode for '/'. Set fdp->fd_fd.fd_cdir to reference it. */ - if (VFS_ROOT(mountlist.cqh_first, &rootvnode)) + if (VFS_ROOT(mountlist.tqh_first, &rootvnode, &context)) panic("bsd_init: cannot find root vnode"); - VREF(rootvnode); + rootvnode->v_flag |= VROOT; + (void)vnode_ref(rootvnode); + (void)vnode_put(rootvnode); filedesc0.fd_cdir = rootvnode; - VOP_UNLOCK(rootvnode, 0, p); +#if NFSCLIENT if (mountroot == netboot_mountroot) { int err; /* post mount setup */ @@ -491,14 +565,10 @@ bsd_init() panic("bsd_init: NetBoot could not find root, %d", err); } } +#endif - /* - * Now can look at time, having had a chance to verify the time - * from the file system. Reset p->p_rtime as it may have been - * munched in mi_switch() after the time got set. - */ - p->p_stats->p_start = boottime = time; + microtime(&p->p_stats->p_start); p->p_rtime.tv_sec = p->p_rtime.tv_usec = 0; #if DEVFS @@ -507,13 +577,11 @@ bsd_init() devfs_kernel_mount("/dev"); } -#endif DEVFS +#endif /* DEVFS */ /* Initialize signal state for process 0. */ siginit(p); - /* printf("Launching user process\n"); */ - bsd_utaskbootstrap(); /* invoke post-root-mount hook */ @@ -530,13 +598,14 @@ bsdinit_task(void) struct proc *p = current_proc(); struct uthread *ut; kern_return_t kr; - thread_act_t th_act; + thread_t th_act; + shared_region_mapping_t system_region; - proc_name("init", p); + process_name("init", p); ux_handler_init(); - th_act = current_act(); + th_act = current_thread(); (void) host_set_exception_ports(host_priv_self(), EXC_MASK_ALL & ~(EXC_MASK_SYSCALL | EXC_MASK_MACH_SYSCALL | @@ -560,11 +629,16 @@ bsdinit_task(void) bsd_hardclockinit = 1; /* Start bsd hardclock */ bsd_init_task = get_threadtask(th_act); init_task_failure_data[0] = 0; - shared_region_mapping_ref(system_shared_region); - vm_set_shared_region(get_threadtask(th_act), system_shared_region); + system_region = lookup_default_shared_region(ENV_DEFAULT_ROOT, cpu_type()); + if (system_region == NULL) { + shared_file_boot_time_init(ENV_DEFAULT_ROOT, cpu_type()); + } else { + vm_set_shared_region(get_threadtask(th_act), system_region); + } load_init_program(p); /* turn on app-profiling i.e. pre-heating */ app_profile = 1; + lock_trace = 1; } void @@ -602,9 +676,10 @@ bsd_autoconf() } -#include // for MAXPARTITIONS +#include /* for MAXPARTITIONS */ -setconf() +static void +setconf(void) { extern kern_return_t IOFindBSDRoot( char * rootName, dev_t * root, u_int32_t * flags ); @@ -627,33 +702,33 @@ setconf() flags = 0; } +#if NFSCLIENT if( flags & 1 ) { /* network device */ mountroot = netboot_mountroot; } else { +#endif /* otherwise have vfs determine root filesystem */ mountroot = NULL; +#if NFSCLIENT } +#endif } bsd_utaskbootstrap() { - thread_act_t th_act; + thread_t th_act; struct uthread *ut; th_act = cloneproc(kernproc, 0); initproc = pfind(1); /* Set the launch time for init */ - initproc->p_stats->p_start = time; + microtime(&initproc->p_stats->p_start); ut = (struct uthread *)get_bsdthread_info(th_act); ut->uu_sigmask = 0; - thread_hold(th_act); - (void)thread_stop(getshuttle_thread(th_act)); act_set_astbsd(th_act); - thread_release(th_act); - thread_unstop(getshuttle_thread(th_act)); (void) thread_resume(th_act); } @@ -675,6 +750,7 @@ parse_bsd_args() else strcat(init_args,"-s"); } + if (PE_parse_boot_arg("-b", namep)) { boothowto |= RB_NOBOOTRC; len = strlen(init_args); @@ -708,6 +784,14 @@ parse_bsd_args() strcat(init_args,"-x"); } + if (PE_parse_boot_arg("-d", namep)) { + len = strlen(init_args); + if(len != 0) + strcat(init_args," -d"); + else + strcat(init_args,"-d"); + } + PE_parse_boot_arg("srv", &srv); PE_parse_boot_arg("ncl", &ncl); PE_parse_boot_arg("nbuf", &nbuf); @@ -715,59 +799,10 @@ parse_bsd_args() return 0; } -boolean_t -thread_funnel_switch( - int oldfnl, - int newfnl) +#if !NFSCLIENT +int +netboot_root(void) { - thread_t cur_thread; - boolean_t funnel_state_prev; - int curfnl; - funnel_t * curflock; - funnel_t * oldflock; - funnel_t * newflock; - funnel_t * exist_funnel; - extern int disable_funnel; - - - if (disable_funnel) - return(TRUE); - - if(oldfnl == newfnl) { - panic("thread_funnel_switch: can't switch to same funnel"); - } - - if ((oldfnl != NETWORK_FUNNEL) && (oldfnl != KERNEL_FUNNEL)) { - panic("thread_funnel_switch: invalid oldfunnel"); - } - if ((newfnl != NETWORK_FUNNEL) && (newfnl != KERNEL_FUNNEL)) { - panic("thread_funnel_switch: invalid newfunnel"); - } - - if((curflock = thread_funnel_get()) == THR_FUNNEL_NULL) { - panic("thread_funnel_switch: no funnel held"); - } - - cur_thread = current_thread(); - - if ((oldfnl == NETWORK_FUNNEL) && (curflock != network_flock)) - panic("thread_funnel_switch: network funnel not held"); - - if ((oldfnl == KERNEL_FUNNEL) && (curflock != kernel_flock)) - panic("thread_funnel_switch: kernel funnel not held"); - - if(oldfnl == NETWORK_FUNNEL) { - oldflock = network_flock; - newflock = kernel_flock; - } else { - oldflock = kernel_flock; - newflock = network_flock; - } - KERNEL_DEBUG(0x603242c | DBG_FUNC_NONE, oldflock, 1, 0, 0, 0); - thread_funnel_set(oldflock, FALSE); - KERNEL_DEBUG(0x6032428 | DBG_FUNC_NONE, newflock, 1, 0, 0, 0); - thread_funnel_set(newflock, TRUE); - KERNEL_DEBUG(0x6032434 | DBG_FUNC_NONE, newflock, 1, 0, 0, 0); - - return(TRUE); + return(0); } +#endif