X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/9bccf70c0258c7cac2dcb80011b2a964d884c552..bca245acd4c03fd752d1a45f011ad495e60fe53d:/bsd/kern/bsd_init.c?ds=sidebyside diff --git a/bsd/kern/bsd_init.c b/bsd/kern/bsd_init.c index 1b81ced7b..887cb454b 100644 --- a/bsd/kern/bsd_init.c +++ b/bsd/kern/bsd_init.c @@ -1,25 +1,31 @@ /* - * Copyright (c) 2000-2001 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2019 Apple Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ - * - * 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 Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ + * + * 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. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. + * + * 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 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * 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@ - */ -/* + * 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. + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ + * + * * Copyright (c) 1982, 1986, 1989, 1991, 1992, 1993 * The Regents of the University of California. All rights reserved. * (c) UNIX System Laboratories, Inc. @@ -59,7 +65,7 @@ * @(#)init_main.c 8.16 (Berkeley) 5/14/95 */ -/* +/* * * Mach Operating System * Copyright (c) 1987 Carnegie-Mellon University @@ -67,45 +73,52 @@ * 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. + * NOTICE: This file was modified by McAfee Research in 2004 to introduce + * support for mandatory and extensible security protections. This notice + * is included in support of clause 2.2 (b) of the Apple Public License, + * Version 2.0. */ -#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 #include #include +#include +#include /* for ux_handler_setup() */ #include #include #include -#include - #include -#include -#include +#include /* for pseudo_inits */ #include +#include +#include #include #include @@ -113,77 +126,256 @@ #include #include #include +#include /* for thread_resume() */ +#include /* for ubc_init() */ +#include /* for mcache_init() */ +#include /* for mbinit() */ +#include /* for knote_init() */ +#include /* for eventhandler_init() */ +#include /* for memorystatus_init() */ +#include /* for memorystatus_freeze_init() */ +#include /* for aio_init() */ +#include /* for psem_cache_init() */ +#include /* for dlil_init() */ +#include /* for proto_kpi_init() */ +#include /* for iptap_init() */ +#include /* for pipeinit() */ +#include /* for socketinit() */ +#include /* for domaininit() */ +#include /* for thread_wakeup() */ +#include /* for ether_family_init() */ +#include /* for gif_init() */ +#include /* for vnode_pager_bootstrap() */ +#include /* for devfs_kernel_mount() */ +#include /* for kmem_suballoc() */ +#include /* for psem_lock_init() */ +#include /* for log_setsize() */ +#include /* for tty_init() */ +#include /* proc_uuid_policy_init() */ +#include /* flow_divert_init() */ +#include /* for cfil_init() */ +#include /* for necp_init() */ +#include /* for netagent_init() */ +#include /* for pkt_mnglr_init() */ +#include /* for utun_register_control() */ +#include /* for ipsec_register_control() */ +#include /* for net_str_id_init() */ +#include /* for netsrc_init() */ +#include /* for nstat_init() */ +#include /* for tcp_cc_init() */ +#include /* for mptcp_control_register() */ +#include /* for nwk_wq_init */ +#include /* for restricted_in_port_init() */ +#include /* for assert() */ +#include /* for init_system_override() */ +#include /* for lf_init() */ + +#include + +#if CONFIG_MACF +#include +#include /* mac_init_bsd() */ +#include /* mac_update_task_label() */ +#endif -#include -#include +#include -extern shared_region_mapping_t system_shared_region; -extern int app_profile; /* on/off switch for pre-heat cache */ +#if CONFIG_NETBOOT +#include +#endif + +#if CONFIG_IMAGEBOOT +#include +#endif + +#if PFLOG +#include +#endif -char copyright[] = -"Copyright (c) 1982, 1986, 1989, 1991, 1993\n\tThe Regents of the University of California. All rights reserved.\n\n"; -extern void ux_handler(); +#include +#include +#include + +#if CONFIG_XNUPOST +#include +#endif + +void * get_user_regs(thread_t); /* XXX kludge for */ +void IOKitInitializeTime(void); /* XXX */ +void IOSleep(unsigned int); /* XXX */ +void loopattach(void); /* XXX */ + +const char copyright[] = + "Copyright (c) 1982, 1986, 1989, 1991, 1993\n\t" + "The Regents of the University of California. " + "All rights reserved.\n\n"; /* Components of the first process -- never freed. */ -struct proc proc0; -struct session session0; -struct pgrp pgrp0; -struct pcred cred0; -struct filedesc filedesc0; -struct plimit limit0; -struct pstats pstats0; -struct sigacts sigacts0; -struct proc *kernproc, *initproc; +struct proc proc0; +struct session session0; +struct pgrp pgrp0; +struct filedesc filedesc0; +struct plimit limit0; +struct pstats pstats0; +struct sigacts sigacts0; +proc_t kernproc; +proc_t initproc; long tk_cancc; 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; void *swapmap; struct swdevt swdevt[1]; -dev_t rootdev; /* device of the root */ -dev_t dumpdev; /* device to take dumps on */ -long dumplo; /* offset into dumpdev */ -long hostid; -char hostname[MAXHOSTNAMELEN]; -int hostnamelen; -char domainname[MAXDOMNAMELEN]; -int domainnamelen; +dev_t rootdev; /* device of the root */ +dev_t dumpdev; /* device to take dumps on */ +long dumplo; /* offset into dumpdev */ +long hostid; +char hostname[MAXHOSTNAMELEN]; +lck_mtx_t hostname_lock; +lck_grp_t *hostname_lck_grp; +char domainname[MAXDOMNAMELEN]; +lck_mtx_t domainname_lock; + +char rootdevice[DEVMAXNAMESIZE]; + +#if KMEMSTATS +struct kmemstats kmemstats[M_LAST]; +#endif + +struct vnode *rootvp; +int boothowto; +int minimalboot = 0; +#if CONFIG_EMBEDDED +int darkboot = 0; +#endif + +#if __arm64__ +int legacy_footprint_entitlement_mode = LEGACY_FOOTPRINT_ENTITLEMENT_IGNORE; +#endif /* __arm64__ */ + +#if PROC_REF_DEBUG +__private_extern__ int proc_ref_tracking_disabled = 0; /* disable panics on leaked proc refs across syscall boundary */ +#endif + +#if OS_REASON_DEBUG +__private_extern__ int os_reason_debug_disabled = 0; /* disable asserts for when we fail to allocate OS reasons */ +#endif + +extern kern_return_t IOFindBSDRoot(char *, unsigned int, dev_t *, u_int32_t *); +extern void IOSecureBSDRoot(const char * rootName); +extern kern_return_t IOKitBSDInit(void ); +extern void kminit(void); +extern void file_lock_init(void); +extern void kmeminit(void); +extern void bsd_bufferinit(void); +extern void oslog_setsize(int size); +extern void throttle_init(void); +extern void acct_init(void); + +#if CONFIG_LOCKERBOOT +#define LOCKER_PROTOBOOT_MOUNT "/protoboot" + +const char kernel_protoboot_mount[] = LOCKER_PROTOBOOT_MOUNT; +extern int mount_locker_protoboot(const char *fsname, const char *mntpoint, + const char *pbdevpath); +#endif + +extern int serverperfmode; +extern int ncl; +#if DEVELOPMENT || DEBUG +extern int syscallfilter_disable; +#endif // DEVELOPMENT || DEBUG + +vm_map_t bsd_pageable_map; +vm_map_t mb_map; -char rootdevice[16]; /* hfs device names have at least 9 chars */ -struct timeval boottime; /* GRODY! This has to go... */ +static int bsd_simul_execs; +static int bsd_pageable_map_size; +__private_extern__ int execargs_cache_size = 0; +__private_extern__ int execargs_free_count = 0; +__private_extern__ vm_offset_t * execargs_cache = NULL; -#ifdef KMEMSTATS -struct kmemstats kmemstats[M_LAST]; +void bsd_exec_setup(int); + +__private_extern__ int bootarg_execfailurereports = 0; + +#if __x86_64__ +__private_extern__ int bootarg_no32exec = 1; #endif +__private_extern__ int bootarg_vnode_cache_defeat = 0; + +#if CONFIG_JETSAM && (DEVELOPMENT || DEBUG) +__private_extern__ int bootarg_no_vnode_jetsam = 0; +#endif /* CONFIG_JETSAM && (DEVELOPMENT || DEBUG) */ -int lbolt; /* awoken once a second */ -struct vnode *rootvp; -int boothowto = RB_DEBUG; +__private_extern__ int bootarg_no_vnode_drain = 0; + +/* + * Prevent kernel-based ASLR from being used, for testing. + */ +#if DEVELOPMENT || DEBUG +__private_extern__ int bootarg_disable_aslr = 0; +#endif -#define BSD_PAGABLE_MAP_SIZE (4 * 512 * 1024) -vm_map_t bsd_pageable_map; -vm_map_t mb_map; -semaphore_t execve_semaphore; +/* + * Allow an alternate dyld to be used for testing. + */ -int cmask = CMASK; +#if DEVELOPMENT || DEBUG +char dyld_alt_path[MAXPATHLEN]; +int use_alt_dyld = 0; +extern uint64_t dyld_flags; +#endif -int parse_bsd_args(void); -extern int bsd_hardclockinit; -extern task_t bsd_init_task; -extern char init_task_failure_data[]; +int cmask = CMASK; +extern int customnbuf; + +kern_return_t bsd_autoconf(void); +void bsd_utaskbootstrap(void); + +static void parse_bsd_args(void); +#if CONFIG_DEV_KMEM +extern void dev_kmem_init(void); +#endif extern void time_zone_slock_init(void); +extern void select_waitq_init(void); +static void process_name(const char *, proc_t); + +static void setconf(void); + +#if SYSV_SHM +extern void sysv_shm_lock_init(void); +#endif +#if SYSV_SEM +extern void sysv_sem_lock_init(void); +#endif +#if SYSV_MSG +extern void sysv_msg_lock_init(void); +#endif + +extern void ulock_initialize(void); -funnel_t * kernel_flock; -funnel_t * network_flock; -int disable_funnel = 0; /* disables split funnel */ -int enable_funnel = 0; /* disables split funnel */ +#if CONFIG_MACF +#if defined (__i386__) || defined (__x86_64__) +/* MACF policy_check configuration flags; see policy_check.c for details */ +int policy_check_flags = 0; + +extern int check_policy_init(int); +#endif +#endif /* CONFIG_MACF */ + +/* If we are using CONFIG_DTRACE */ +#if CONFIG_DTRACE +extern void dtrace_postinit(void); +#endif /* * Initialization code. @@ -191,175 +383,339 @@ 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) - char *s; - struct proc *p; +static void +process_name(const char *s, proc_t p) { - int length = strlen(s); - - bcopy(s, p->p_comm, - length >= sizeof(p->p_comm) ? sizeof(p->p_comm) : - length + 1); + strlcpy(p->p_comm, s, sizeof(p->p_comm)); + strlcpy(p->p_name, s, sizeof(p->p_name)); } /* To allow these values to be patched, they're globals here */ #include -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 int netboot_mountroot(); /* netboot.c */ -extern int netboot_setup(struct proc * p); +struct rlimit vm_initial_limit_stack = { .rlim_cur = DFLSSIZ, .rlim_max = MAXSSIZ - PAGE_MAX_SIZE }; +struct rlimit vm_initial_limit_data = { .rlim_cur = DFLDSIZ, .rlim_max = MAXDSIZ }; +struct rlimit vm_initial_limit_core = { .rlim_cur = DFLCSIZ, .rlim_max = MAXCSIZ }; + +extern thread_t cloneproc(task_t, coalition_t, proc_t, int, int); +extern int (*mountroot)(void); + +lck_grp_t * proc_lck_grp; +lck_grp_t * proc_slock_grp; +lck_grp_t * proc_fdmlock_grp; +lck_grp_t * proc_kqhashlock_grp; +lck_grp_t * proc_knhashlock_grp; +lck_grp_t * proc_ucred_mlock_grp; +lck_grp_t * proc_mlock_grp; +lck_grp_t * proc_dirslock_grp; +lck_grp_attr_t * proc_lck_grp_attr; +lck_attr_t * proc_lck_attr; +lck_mtx_t * proc_list_mlock; +lck_mtx_t * proc_klist_mlock; + +#if CONFIG_XNUPOST +lck_grp_t * sysctl_debug_test_stackshot_owner_grp; +lck_mtx_t * sysctl_debug_test_stackshot_owner_init_mtx; +#endif /* !CONFIG_XNUPOST */ + +extern lck_mtx_t * execargs_cache_lock; /* hook called after root is mounted XXX temporary hack */ void (*mountroot_post_hook)(void); +void (*unmountroot_pre_hook)(void); +/* + * This function is called before IOKit initialization, so that globals + * like the sysctl tree are initialized before kernel extensions + * are started (since they may want to register sysctls + */ void -bsd_init() +bsd_early_init(void) { - register struct proc *p; - extern struct ucred *rootcred; - register int i; - int s; - thread_t th; - void lightning_bolt(void ); - kern_return_t ret; - boolean_t funnel_state; - extern void uthread_zone_init(); + sysctl_early_init(); +} +/* + * 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; + struct vfs_context context; + kern_return_t ret; + struct ucred temp_cred; + struct posix_cred temp_pcred; +#if CONFIG_NETBOOT || CONFIG_IMAGEBOOT + boolean_t netboot = FALSE; +#endif +#if CONFIG_LOCKERBOOT + vnode_t pbvn = NULLVP; + mount_t pbmnt = NULL; + char *pbdevp = NULL; + char pbdevpath[64]; + char pbfsname[MFSNAMELEN]; + char *slash_dev = NULL; +#endif +#define DEBUG_BSDINIT 0 -#if 1 - /* split funnel is enabled by default */ - PE_parse_boot_arg("dfnl", &disable_funnel); +#if DEBUG_BSDINIT +#define bsd_init_kprintf(x, ...) kprintf("bsd_init: " x, ## __VA_ARGS__) #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; - } +#define bsd_init_kprintf(x, ...) #endif - kernel_flock = funnel_alloc(KERNEL_FUNNEL); - if (kernel_flock == (funnel_t *)0 ) { - panic("bsd_init: Failed to allocate kernel funnel"); - } - - 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; - } + throttle_init(); printf(copyright); + bsd_init_kprintf("calling kmeminit\n"); kmeminit(); - + + bsd_init_kprintf("calling parse_bsd_args\n"); parse_bsd_args(); - bsd_bufferinit(); +#if CONFIG_DEV_KMEM + bsd_init_kprintf("calling dev_kmem_init\n"); + dev_kmem_init(); +#endif - /* Initialize the uthread zone */ - uthread_zone_init(); + /* Initialize kauth subsystem before instancing the first credential */ + bsd_init_kprintf("calling kauth_init\n"); + kauth_init(); - /* - * Initialize process and pgrp structures. - */ + /* Initialize process and pgrp structures. */ + bsd_init_kprintf("calling procinit\n"); procinit(); - kernproc = &proc0; + /* Initialize the ttys (MUST be before kminit()/bsd_autoconf()!)*/ + tty_init(); - p = kernproc; + kernproc = &proc0; /* implicitly bzero'ed */ /* kernel_task->proc = kernproc; */ - set_bsdtask_info(kernel_task,(void *)p); - p->p_pid = 0; + set_bsdtask_info(kernel_task, (void *)kernproc); /* give kernproc a name */ - proc_name("kernel_task", p); - - if (current_task() != kernel_task) + 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); + + proc_slock_grp = lck_grp_alloc_init("proc-slock", proc_lck_grp_attr); + proc_ucred_mlock_grp = lck_grp_alloc_init("proc-ucred-mlock", proc_lck_grp_attr); + proc_mlock_grp = lck_grp_alloc_init("proc-mlock", proc_lck_grp_attr); + proc_fdmlock_grp = lck_grp_alloc_init("proc-fdmlock", proc_lck_grp_attr); + proc_kqhashlock_grp = lck_grp_alloc_init("proc-kqhashlock", proc_lck_grp_attr); + proc_knhashlock_grp = lck_grp_alloc_init("proc-knhashlock", proc_lck_grp_attr); + proc_dirslock_grp = lck_grp_alloc_init("proc-dirslock", proc_lck_grp_attr); +#if CONFIG_XNUPOST + sysctl_debug_test_stackshot_owner_grp = lck_grp_alloc_init("test-stackshot-owner-grp", LCK_GRP_ATTR_NULL); + sysctl_debug_test_stackshot_owner_init_mtx = lck_mtx_alloc_init( + sysctl_debug_test_stackshot_owner_grp, + LCK_ATTR_NULL); +#endif /* !CONFIG_XNUPOST */ + /* Allocate proc lock attribute */ + proc_lck_attr = lck_attr_alloc_init(); + + 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_mtx_init(&kernproc->p_ucred_mlock, proc_ucred_mlock_grp, proc_lck_attr); + lck_spin_init(&kernproc->p_slock, proc_slock_grp, proc_lck_attr); + lck_rw_init(&kernproc->p_dirs_lock, proc_dirslock_grp, proc_lck_attr); + + 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"); - + "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(); + +#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 */ + + ulock_initialize(); + + hostname_lck_grp = lck_grp_alloc_init("hostname", LCK_GRP_ATTR_NULL); + lck_mtx_init(&hostname_lock, hostname_lck_grp, LCK_ATTR_NULL); + lck_mtx_init(&domainname_lock, hostname_lck_grp, LCK_ATTR_NULL); + /* * Create process 0. */ - LIST_INSERT_HEAD(&allproc, p, p_list); - p->p_pgrp = &pgrp0; + 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); - LIST_INSERT_HEAD(&pgrp0.pg_members, p, p_pglist); + lck_mtx_init(&pgrp0.pg_mlock, proc_mlock_grp, proc_lck_attr); + /* 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 = p; - - p->task = kernel_task; - - p->p_stat = SRUN; - p->p_flag = P_INMEM|P_SYSTEM; - p->p_nice = NZERO; - p->p_pptr = p; - lockinit(&p->signal_lock, PVM, "signal", 0, 0); - TAILQ_INIT(&p->p_uthlist); - p->sigwait = FALSE; - 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 */ + session0.s_leader = kernproc; + session0.s_listflags = 0; + lck_mtx_init(&session0.s_mlock, proc_mlock_grp, proc_lck_attr); + LIST_INSERT_HEAD(SESSHASH(0), &session0, s_hash); + proc_list_unlock(); + +#if CONFIG_PERSONAS + kernproc->p_persona = NULL; +#endif + + kernproc->task = kernel_task; + + kernproc->p_stat = SRUN; + kernproc->p_flag = P_SYSTEM; + kernproc->p_lflag = 0; + kernproc->p_ladvflag = 0; + +#if defined(__LP64__) + kernproc->p_flag |= P_LP64; +#endif + +#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; + /* kern_proc, shouldn't call up to DS for group membership */ + temp_pcred.cr_flags = CRF_NOMEMBERD; + 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); +#endif /* Create the file descriptor table. */ - filedesc0.fd_refcnt = 1+1; /* +1 so shutdown will not _FREE_ZONE */ - p->p_fd = &filedesc0; + kernproc->p_fd = &filedesc0; filedesc0.fd_cmask = cmask; + filedesc0.fd_knlistsize = 0; + filedesc0.fd_knlist = NULL; + filedesc0.fd_knhash = NULL; + filedesc0.fd_knhashmask = 0; + lck_mtx_init(&filedesc0.fd_kqhashlock, proc_kqhashlock_grp, proc_lck_attr); + lck_mtx_init(&filedesc0.fd_knhashlock, proc_knhashlock_grp, proc_lck_attr); /* Create the limits structures. */ - p->p_limit = &limit0; - for (i = 0; i < sizeof(p->p_rlimit)/sizeof(p->p_rlimit[0]); i++) - limit0.pl_rlimit[i].rlim_cur = - limit0.pl_rlimit[i].rlim_max = RLIM_INFINITY; + 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 = MAXUPRC; + 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.p_refcnt = 1; + limit0.pl_refcnt = 1; - p->p_stats = &pstats0; - p->p_sigacts = &sigacts0; + kernproc->p_stats = &pstats0; + kernproc->p_sigacts = &sigacts0; /* - * Charge root for one process. + * Charge root for one process: launchd. */ + bsd_init_kprintf("calling chgproccnt\n"); (void)chgproccnt(0, 1); /* @@ -367,70 +723,182 @@ bsd_init() * for temporary copying (execve()). */ { - vm_offset_t min; + vm_offset_t minimum; + bsd_init_kprintf("calling kmem_suballoc\n"); + assert(bsd_pageable_map_size != 0); ret = kmem_suballoc(kernel_map, - &min, - (vm_size_t)BSD_PAGABLE_MAP_SIZE, - TRUE, - TRUE, - &bsd_pageable_map); - if (ret != KERN_SUCCESS) + &minimum, + (vm_size_t)bsd_pageable_map_size, + TRUE, + VM_FLAGS_ANYWHERE, + VM_MAP_KERNEL_FLAGS_NONE, + VM_KERN_MEMORY_BSD, + &bsd_pageable_map); + if (ret != KERN_SUCCESS) { panic("bsd_init: Failed to allocate bsd pageable map"); + } } - /* Initialize the execve() semaphore */ - ret = semaphore_create(kernel_task, &execve_semaphore, - SYNC_POLICY_FIFO, (BSD_PAGABLE_MAP_SIZE / NCARGS)); - if (ret != KERN_SUCCESS) - panic("bsd_init: Failed to create execve semaphore"); + bsd_init_kprintf("calling fpxlog_init\n"); + fpxlog_init(); + + /* + * 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 calendar. */ - IOKitResetTime(); + bsd_init_kprintf("calling IOKitInitializeTime\n"); + IOKitInitializeTime(); + bsd_init_kprintf("calling ubc_init\n"); ubc_init(); /* Initialize the file systems. */ + bsd_init_kprintf("calling vfsinit\n"); vfsinit(); + /* Initialize file locks. */ + bsd_init_kprintf("calling lf_init\n"); + lf_init(); + +#if CONFIG_PROC_UUID_POLICY + /* Initial proc_uuid_policy subsystem */ + bsd_init_kprintf("calling proc_uuid_policy_init()\n"); + proc_uuid_policy_init(); +#endif + +#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 */ + restricted_in_port_init(); +#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 event handler */ + bsd_init_kprintf("calling eventhandler_init\n"); + eventhandler_init(); + + /* Initialize for async IO */ + bsd_init_kprintf("calling aio_init\n"); + aio_init(); - /* Initialize syslog */ - log_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_waitq_init\n"); + select_waitq_init(); /* * Initialize protocols. Block reception of incoming packets * until everything is ready. */ - s = splimp(); - sysctl_register_fixed(); +#if NETWORKING + bsd_init_kprintf("calling nwk_wq_init\n"); + nwk_wq_init(); + 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(); - splx(s); + iptap_init(); +#if FLOW_DIVERT + flow_divert_init(); +#endif /* FLOW_DIVERT */ +#endif /* SOCKETS */ + kernproc->p_fd->fd_cdir = NULL; + kernproc->p_fd->fd_rdir = NULL; + +#if CONFIG_FREEZE +#ifndef CONFIG_MEMORYSTATUS + #error "CONFIG_FREEZE defined without matching CONFIG_MEMORYSTATUS" +#endif + /* Initialise background freezing */ + bsd_init_kprintf("calling memorystatus_freeze_init\n"); + memorystatus_freeze_init(); +#endif - p->p_fd->fd_cdir = NULL; - p->p_fd->fd_rdir = NULL; +#if CONFIG_MEMORYSTATUS + /* Initialize kernel memory status notifications */ + bsd_init_kprintf("calling memorystatus_init\n"); + memorystatus_init(); +#endif /* CONFIG_MEMORYSTATUS */ -#ifdef GPROF - /* Initialize kernel profiling. */ - kmstartup(); -#endif + bsd_init_kprintf("calling acct_init\n"); + acct_init(); - /* kick off timeout driven events by calling first time */ - thread_wakeup(&lbolt); - timeout(lightning_bolt,0,hz); + bsd_init_kprintf("calling sysctl_mib_init\n"); + sysctl_mib_init(); + bsd_init_kprintf("calling bsd_autoconf\n"); bsd_autoconf(); + bsd_init_kprintf("calling os_reason_init\n"); + os_reason_init(); + +#if CONFIG_DTRACE + dtrace_postinit(); +#endif + /* * We attach the loopback interface *way* down here to ensure * it happens after autoconf(), otherwise it becomes the @@ -438,332 +906,554 @@ bsd_init() */ #include #if NLOOP > 0 - loopattach(); /* XXX */ + bsd_init_kprintf("calling loopattach\n"); + loopattach(); /* XXX */ +#endif +#if NGIF + /* Initialize gif interface (after lo0) */ + gif_init(); #endif - - /* Register the built-in dlil ethernet interface family */ + +#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(); + +#if CONTENT_FILTER + cfil_init(); +#endif + +#if PACKET_MANGLER + pkt_mnglr_init(); +#endif +#if NECP + /* Initialize Network Extension Control Policies */ + necp_init(); +#endif + + netagent_init(); + + /* register user tunnel kernel control handler */ + utun_register_control(); +#if IPSEC + ipsec_register_control(); +#endif /* IPSEC */ + netsrc_init(); + nstat_init(); + tcp_cc_init(); +#if MPTCP + mptcp_control_register(); +#endif /* MPTCP */ +#endif /* NETWORKING */ + + bsd_init_kprintf("calling vnode_pager_bootstrap\n"); vnode_pager_bootstrap(); + bsd_init_kprintf("calling inittodr\n"); + inittodr(0); + /* Mount the root file system. */ - while( TRUE) { + while (TRUE) { int err; + bsd_init_kprintf("calling setconf\n"); setconf(); - /* - * read the time after clock_initialize_calendar() - * and before nfs mount - */ - microtime(&time); - - bsd_hardclockinit = -1; /* start ticking */ +#if CONFIG_NETBOOT + netboot = (mountroot == netboot_mountroot); +#endif - if (0 == (err = vfs_mountroot())) + bsd_init_kprintf("vfs_mountroot\n"); + if (0 == (err = vfs_mountroot())) { break; - if (mountroot == netboot_mountroot) { - printf("cannot mount network root, errno = %d\n", err); - mountroot = NULL; - if (0 == (err = vfs_mountroot())) - break; } + rootdevice[0] = '\0'; +#if CONFIG_NETBOOT + 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; } - mountlist.cqh_first->mnt_flag |= MNT_ROOTFS; + 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.cqh_first, &rootvnode)) - panic("bsd_init: cannot find root vnode"); - VREF(rootvnode); + 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; - VOP_UNLOCK(rootvnode, 0, p); - if (mountroot == netboot_mountroot) { +#if CONFIG_NETBOOT + if (netboot) { int err; + + netboot = TRUE; /* post mount setup */ - if (err = netboot_setup(p)) { - panic("bsd_init: NetBoot could not find root, %d", err); + 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 +#if CONFIG_LOCKERBOOT + /* + * Stash the protoboot vnode, mount, filesystem name, and device name for + * later use. Note that the mount-from name may not have the "/dev/" + * component, so we must sniff out this condition and add it as needed. + */ + pbvn = rootvnode; + pbmnt = pbvn->v_mount; + pbdevp = vfs_statfs(pbmnt)->f_mntfromname; + slash_dev = strnstr(pbdevp, "/dev/", strlen(pbdevp)); + if (slash_dev) { + /* + * If the old root is a snapshot mount, it will have the form: + * + * com.apple.os.update-@ + * + * So we just search the mntfromname for any occurrence of "/dev/" and + * grab that as the device path. The image boot code needs a dev node to + * do the re-mount, so we cannot directly mount the snapshot as the + * protoboot volume currently. + */ + strlcpy(pbdevpath, slash_dev, sizeof(pbdevpath)); + } else { + snprintf(pbdevpath, sizeof(pbdevpath), "/dev/%s", pbdevp); + } + bsd_init_kprintf("protoboot mount-from: %s\n", pbdevp); + bsd_init_kprintf("protoboot dev path: %s\n", pbdevpath); + + strlcpy(pbfsname, pbmnt->mnt_vtable->vfc_name, sizeof(pbfsname)); +#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. + * See if a system disk image is present. If so, mount it and + * switch the root vnode to point to it */ - p->p_stats->p_start = boottime = time; - p->p_rtime.tv_sec = p->p_rtime.tv_usec = 0; + imageboot_type_t imageboot_type = imageboot_needed(); + if (netboot == FALSE && imageboot_type) { + /* + * An image was found. No turning back: we're booted + * with a kernel from the disk image. + */ + bsd_init_kprintf("doing image boot: type = %d\n", imageboot_type); + imageboot_setup(imageboot_type); + } + +#if CONFIG_LOCKERBOOT + if (imageboot_type == IMAGEBOOT_LOCKER) { + bsd_init_kprintf("booting from locker\n"); + if (vnode_tag(rootvnode) != VT_LOCKERFS) { + panic("root filesystem not a locker: fsname = %s", + rootvnode->v_mount->mnt_vtable->vfc_name); + } + } +#endif /* CONFIG_LOCKERBOOT */ +#endif /* CONFIG_IMAGEBOOT */ + + /* set initial time; all other resource data is already zero'ed */ + microtime_with_abstime(&kernproc->p_start, &kernproc->p_stats->ps_start); #if DEVFS { - extern void devfs_kernel_mount(char * str); - - devfs_kernel_mount("/dev"); + 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. */ - siginit(p); +#endif /* DEVFS */ - /* printf("Launching user process\n"); */ + if (vfs_mount_rosv_data()) { + panic("failed to mount data volume!"); + } + + if (vfs_mount_vm()) { + printf("failed to mount vm volume!"); + } +#if CONFIG_LOCKERBOOT + /* + * We need to wait until devfs is up before remounting the protoboot volume + * within the locker so that it can have a real devfs vnode backing it. + */ + if (imageboot_type == IMAGEBOOT_LOCKER) { + bsd_init_kprintf("re-mounting protoboot volume\n"); + int error = mount_locker_protoboot(pbfsname, LOCKER_PROTOBOOT_MOUNT, + pbdevpath); + if (error) { + panic("failed to mount protoboot volume: dev path = %s, error = %d", + pbdevpath, error); + } + } +#endif /* CONFIG_LOCKERBOOT */ + + /* Initialize signal state for process 0. */ + bsd_init_kprintf("calling siginit\n"); + siginit(kernproc); + + bsd_init_kprintf("calling bsd_utaskbootstrap\n"); bsd_utaskbootstrap(); + pal_kernel_announce(); + + bsd_init_kprintf("calling mountroot_post_hook\n"); + /* invoke post-root-mount hook */ - if (mountroot_post_hook != NULL) + if (mountroot_post_hook != NULL) { mountroot_post_hook(); - - (void) thread_funnel_set(kernel_flock, funnel_state); + } + +#if 0 /* not yet */ + consider_zone_gc(FALSE); +#endif + + /* Initialize System Override call */ + init_system_override(); + + bsd_init_kprintf("done\n"); } -/* Called with kernel funnel held */ void bsdinit_task(void) { - struct proc *p = current_proc(); - struct uthread *ut; - kern_return_t kr; - thread_act_t th_act; - - proc_name("init", p); + proc_t p = current_proc(); - ux_handler_init(); + process_name("init", p); - th_act = current_act(); - (void) host_set_exception_ports(host_priv_self(), - EXC_MASK_ALL & ~(EXC_MASK_SYSCALL | - EXC_MASK_MACH_SYSCALL | - EXC_MASK_RPC_ALERT), - ux_exception_port, - EXCEPTION_DEFAULT, 0); - - (void) task_set_exception_ports(get_threadtask(th_act), - EXC_MASK_ALL & ~(EXC_MASK_SYSCALL | - EXC_MASK_MACH_SYSCALL | - EXC_MASK_RPC_ALERT), - ux_exception_port, - EXCEPTION_DEFAULT, 0); + /* Set up exception-to-signal reflection */ + ux_handler_setup(); +#if CONFIG_MACF + mac_cred_label_associate_user(p->p_ucred); +#endif + vm_init_before_launchd(); +#if CONFIG_XNUPOST + int result = bsd_list_tests(); + result = bsd_do_post(); + if (result != 0) { + panic("bsd_do_post: Tests failed with result = 0x%08x\n", result); + } +#endif - ut = (uthread_t)get_bsdthread_info(th_act); - ut->uu_ar0 = (void *)get_user_regs(th_act); + bsd_init_kprintf("bsd_do_post - done"); - 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); load_init_program(p); - /* turn on app-profiling i.e. pre-heating */ - app_profile = 1; + lock_trace = 1; } -void -lightning_bolt() -{ - boolean_t funnel_state; - extern void klogwakeup(void); - - funnel_state = thread_funnel_set(kernel_flock, TRUE); - - thread_wakeup(&lbolt); - timeout(lightning_bolt,0,hz); - klogwakeup(); - - (void) thread_funnel_set(kernel_flock, FALSE); -} - -bsd_autoconf() +kern_return_t +bsd_autoconf(void) { - extern kern_return_t IOKitBSDInit( void ); - + kprintf("bsd_autoconf: calling kminit\n"); kminit(); - /* + /* * Early startup for bsd pseudodevices. */ { - struct pseudo_init *pi; - - for (pi = pseudo_inits; pi->ps_func; pi++) - (*pi->ps_func) (pi->ps_count); + struct pseudo_init *pi; + + for (pi = pseudo_inits; pi->ps_func; pi++) { + (*pi->ps_func)(pi->ps_count); + } } - return( IOKitBSDInit()); + return IOKitBSDInit(); } -#include // for MAXPARTITIONS +#include /* for MAXPARTITIONS */ -setconf() -{ - extern kern_return_t IOFindBSDRoot( char * rootName, - dev_t * root, u_int32_t * flags ); - u_int32_t flags; - kern_return_t err; +static void +setconf(void) +{ + u_int32_t flags; + kern_return_t err; - /* - * calls into IOKit can generate networking registrations - * which needs to be under network funnel. Right thing to do - * here is to drop the funnel alltogether and regrab it afterwards - */ - thread_funnel_set(kernel_flock, FALSE); - err = IOFindBSDRoot( rootdevice, &rootdev, &flags ); - thread_funnel_set(kernel_flock, TRUE); - if( err) { + err = IOFindBSDRoot(rootdevice, sizeof(rootdevice), &rootdev, &flags); + if (err) { printf("setconf: IOFindBSDRoot returned an error (%d);" - "setting rootdevice to 'sd0a'.\n", err); /* XXX DEBUG TEMP */ + "setting rootdevice to 'sd0a'.\n", err); /* XXX DEBUG TEMP */ rootdev = makedev( 6, 0 ); - strcpy( rootdevice, "sd0a" ); + strlcpy(rootdevice, "sd0a", sizeof(rootdevice)); flags = 0; } - if( flags & 1 ) { +#if CONFIG_NETBOOT + if (flags & 1) { /* network device */ mountroot = netboot_mountroot; } else { - /* otherwise have vfs determine root filesystem */ - mountroot = NULL; - } - +#endif + /* otherwise have vfs determine root filesystem */ + mountroot = NULL; +#if CONFIG_NETBOOT +} +#endif } -bsd_utaskbootstrap() +void +bsd_utaskbootstrap(void) { - thread_act_t th_act; + thread_t thread; struct uthread *ut; - th_act = cloneproc(kernproc, 0); - initproc = pfind(1); - /* Set the launch time for init */ - initproc->p_stats->p_start = time; + /* + * Clone the bootstrap process from the kernel process, without + * inheriting either task characteristics or memory from the kernel; + */ + thread = cloneproc(TASK_NULL, COALITION_NULL, kernproc, FALSE, TRUE); - ut = (struct uthread *)get_bsdthread_info(th_act); + /* Hold the reference as it will be dropped during shutdown */ + initproc = proc_find(1); +#if __PROC_INTERNAL_DEBUG + if (initproc == PROC_NULL) { + panic("bsd_utaskbootstrap: initproc not set\n"); + } +#endif + /* + * Since we aren't going back out the normal way to our parent, + * we have to drop the transition locks explicitly. + */ + proc_signalend(initproc, 0); + proc_transend(initproc, 0); + + ut = (struct uthread *)get_bsdthread_info(thread); 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); + act_set_astbsd(thread); + task_clear_return_wait(get_threadtask(thread), TCRW_CLEAR_ALL_WAIT); } -parse_bsd_args() +static void +parse_bsd_args(void) { - extern char init_args[]; - char namep[16]; - extern int boothowto; - extern int srv; - extern int ncl; + char namep[48]; + int msgbuf; - int len; - - if (PE_parse_boot_arg("-s", namep)) { + if (PE_parse_boot_argn("-s", namep, sizeof(namep))) { boothowto |= RB_SINGLE; - len = strlen(init_args); - if(len != 0) - strcat(init_args," -s"); - else - strcat(init_args,"-s"); } - if (PE_parse_boot_arg("-b", namep)) { - boothowto |= RB_NOBOOTRC; - len = strlen(init_args); - if(len != 0) - strcat(init_args," -b"); - else - strcat(init_args,"-b"); + + if (PE_parse_boot_argn("-x", namep, sizeof(namep))) { /* safe boot */ + boothowto |= RB_SAFEBOOT; } - if (PE_parse_boot_arg("-F", namep)) { - len = strlen(init_args); - if(len != 0) - strcat(init_args," -F"); - else - strcat(init_args,"-F"); + if (PE_parse_boot_argn("-minimalboot", namep, sizeof(namep))) { + /* + * -minimalboot indicates that we want userspace to be bootstrapped to a + * minimal environment. What constitutes minimal is up to the bootstrap + * process. + */ + minimalboot = 1; } - if (PE_parse_boot_arg("-v", namep)) { - len = strlen(init_args); - if(len != 0) - strcat(init_args," -v"); - else - strcat(init_args,"-v"); +#if __x86_64__ + int no32exec; + + /* disable 32 bit grading */ + if (PE_parse_boot_argn("no32exec", &no32exec, sizeof(no32exec))) { + bootarg_no32exec = !!no32exec; } +#endif - if (PE_parse_boot_arg("-x", namep)) { /* safe boot */ - len = strlen(init_args); - if(len != 0) - strcat(init_args," -x"); - else - strcat(init_args,"-x"); + int execfailure_crashreports; + /* enable crash reports on various exec failures */ + if (PE_parse_boot_argn("execfailurecrashes", &execfailure_crashreports, sizeof(execfailure_crashreports))) { + bootarg_execfailurereports = !!execfailure_crashreports; } - PE_parse_boot_arg("srv", &srv); - PE_parse_boot_arg("ncl", &ncl); - PE_parse_boot_arg("nbuf", &nbuf); + /* disable vnode_cache_is_authorized() by setting vnode_cache_defeat */ + if (PE_parse_boot_argn("-vnode_cache_defeat", namep, sizeof(namep))) { + bootarg_vnode_cache_defeat = 1; + } - return 0; +#if DEVELOPMENT || DEBUG + if (PE_parse_boot_argn("-disable_aslr", namep, sizeof(namep))) { + bootarg_disable_aslr = 1; + } +#endif + + PE_parse_boot_argn("ncl", &ncl, sizeof(ncl)); + if (PE_parse_boot_argn("nbuf", &max_nbuf_headers, + sizeof(max_nbuf_headers))) { + customnbuf = 1; + } + +#if CONFIG_MACF +#if defined (__i386__) || defined (__x86_64__) + PE_parse_boot_argn("policy_check", &policy_check_flags, sizeof(policy_check_flags)); +#endif +#endif /* CONFIG_MACF */ + + if (PE_parse_boot_argn("msgbuf", &msgbuf, sizeof(msgbuf))) { + log_setsize(msgbuf); + oslog_setsize(msgbuf); + } + + if (PE_parse_boot_argn("-novfscache", namep, sizeof(namep))) { + nc_disabled = 1; + } + +#if CONFIG_JETSAM && (DEVELOPMENT || DEBUG) + if (PE_parse_boot_argn("-no_vnode_jetsam", namep, sizeof(namep))) { + bootarg_no_vnode_jetsam = 1; + } +#endif /* CONFIG_JETSAM && (DEVELOPMENT || DEBUG) */ + + if (PE_parse_boot_argn("-no_vnode_drain", namep, sizeof(namep))) { + bootarg_no_vnode_drain = 1; + } + +#if CONFIG_EMBEDDED + /* + * The darkboot flag is specified by the bootloader and is stored in + * boot_args->bootFlags. This flag is available starting revision 2. + */ + boot_args *args = (boot_args *) PE_state.bootArgs; + if ((args != NULL) && (args->Revision >= kBootArgsRevision2)) { + darkboot = (args->bootFlags & kBootFlagsDarkBoot) ? 1 : 0; + } else { + darkboot = 0; + } +#endif + +#if PROC_REF_DEBUG + if (PE_parse_boot_argn("-disable_procref_tracking", namep, sizeof(namep))) { + proc_ref_tracking_disabled = 1; + } +#endif + +#if OS_REASON_DEBUG + if (PE_parse_boot_argn("-disable_osreason_debug", namep, sizeof(namep))) { + os_reason_debug_disabled = 1; + } +#endif + + PE_parse_boot_argn("sigrestrict", &sigrestrict_arg, sizeof(sigrestrict_arg)); + +#if DEVELOPMENT || DEBUG + if (PE_parse_boot_argn("-no_sigsys", namep, sizeof(namep))) { + send_sigsys = false; + } + + if (PE_parse_boot_argn("alt-dyld", dyld_alt_path, sizeof(dyld_alt_path))) { + if (strlen(dyld_alt_path) > 0) { + use_alt_dyld = 1; + } + } + PE_parse_boot_argn("dyld_flags", &dyld_flags, sizeof(dyld_flags)); + + if (PE_parse_boot_argn("-disable_syscallfilter", &namep, sizeof(namep))) { + syscallfilter_disable = 1; + } + +#if __arm64__ + if (PE_parse_boot_argn("legacy_footprint_entitlement_mode", &legacy_footprint_entitlement_mode, sizeof(legacy_footprint_entitlement_mode))) { + /* + * legacy_footprint_entitlement_mode specifies the behavior we want associated + * with the entitlement. The supported modes are: + * + * LEGACY_FOOTPRINT_ENTITLEMENT_IGNORE: + * Indicates that we want every process to have the memory accounting + * that is available in iOS 12.0 and beyond. + * + * LEGACY_FOOTPRINT_ENTITLEMENT_IOS11_ACCT: + * Indicates that for every process that has the 'legacy footprint entitlement', + * we want to give it the old iOS 11.0 accounting behavior which accounted some + * of the process's memory to the kernel. + * + * LEGACY_FOOTPRINT_ENTITLEMENT_LIMIT_INCREASE: + * Indicates that for every process that has the 'legacy footprint entitlement', + * we want it to have a higher memory limit which will help them acclimate to the + * iOS 12.0 (& beyond) accounting behavior that does the right accounting. + * The bonus added to the system-wide task limit to calculate this higher memory limit + * is available in legacy_footprint_bonus_mb. + */ + + if (legacy_footprint_entitlement_mode < LEGACY_FOOTPRINT_ENTITLEMENT_IGNORE || + legacy_footprint_entitlement_mode > LEGACY_FOOTPRINT_ENTITLEMENT_LIMIT_INCREASE) { + legacy_footprint_entitlement_mode = LEGACY_FOOTPRINT_ENTITLEMENT_LIMIT_INCREASE; + } + } +#endif /* __arm64__ */ +#endif /* DEVELOPMENT || DEBUG */ } -boolean_t -thread_funnel_switch( - int oldfnl, - int newfnl) +void +bsd_exec_setup(int scale) { - 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); + switch (scale) { + case 0: + case 1: + bsd_simul_execs = BSD_SIMUL_EXECS; + break; + case 2: + case 3: + bsd_simul_execs = 65; + break; + case 4: + case 5: + bsd_simul_execs = 129; + break; + case 6: + case 7: + bsd_simul_execs = 257; + break; + default: + bsd_simul_execs = 513; + break; + } + bsd_pageable_map_size = (bsd_simul_execs * BSD_PAGEABLE_SIZE_PER_EXEC); } + +#if !CONFIG_NETBOOT +int +netboot_root(void); + +int +netboot_root(void) +{ + return 0; +} +#endif