/*
- * Copyright (c) 2000-2003 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2020 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
- *
* 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.
- *
+ * 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,
* 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_LICENSE_HEADER_END@
- */
-/*
+ *
+ * @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.
* @(#)init_main.c 8.16 (Berkeley) 5/14/95
*/
-/*
+/*
*
* Mach Operating System
* Copyright (c) 1987 Carnegie-Mellon University
* All rights reserved. The CMU software License Agreement specifies
* the terms and conditions for use and redistribution.
*/
+/*
+ * 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 <sys/param.h>
#include <sys/filedesc.h>
#include <sys/kernel.h>
-#include <sys/mount.h>
-#include <sys/proc.h>
+#include <sys/mount_internal.h>
+#include <sys/proc_internal.h>
+#include <sys/kauth.h>
#include <sys/systm.h>
-#include <sys/vnode.h>
+#include <sys/vnode_internal.h>
#include <sys/conf.h>
-#include <sys/buf.h>
-#include <sys/clist.h>
+#include <sys/buf_internal.h>
#include <sys/user.h>
#include <sys/time.h>
#include <sys/systm.h>
+#include <sys/mman.h>
+#include <sys/kasl.h>
-#include <sys/kern_audit.h>
+#include <security/audit/audit.h>
#include <sys/malloc.h>
#include <sys/dkstat.h>
+#include <sys/codesign.h>
-#include <machine/spl.h>
+#include <kern/startup.h>
#include <kern/thread.h>
#include <kern/task.h>
#include <kern/ast.h>
+#include <kern/zalloc.h>
+#include <kern/ux_handler.h> /* for ux_handler_setup() */
#include <mach/vm_param.h>
#include <vm/vm_map.h>
#include <vm/vm_kern.h>
-#include <sys/ux_exception.h> /* for ux_exception_port */
-
#include <sys/reboot.h>
-#include <mach/exception_types.h>
-#include <dev/busvar.h> /* for pseudo_inits */
+#include <dev/busvar.h> /* for pseudo_inits */
#include <sys/kdebug.h>
+#include <sys/monotonic.h>
#include <mach/mach_types.h>
#include <mach/vm_prot.h>
#include <mach/semaphore.h>
#include <mach/sync_policy.h>
#include <kern/clock.h>
+#include <sys/csr.h>
#include <mach/kern_return.h>
+#include <mach/thread_act.h> /* for thread_resume() */
+#include <sys/mcache.h> /* for mcache_init() */
+#include <sys/mbuf.h> /* for mbinit() */
+#include <sys/event.h> /* for knote_init() */
+#include <sys/eventhandler.h> /* for eventhandler_init() */
+#include <sys/kern_memorystatus.h> /* for memorystatus_init() */
+#include <sys/kern_memorystatus_freeze.h> /* for memorystatus_freeze_init() */
+#include <sys/aio_kern.h> /* for aio_init() */
+#include <sys/semaphore.h> /* for psem_cache_init() */
+#include <net/dlil.h> /* for dlil_init() */
+#include <net/kpi_protocol.h> /* for proto_kpi_init() */
+#include <net/iptap.h> /* for iptap_init() */
+#include <sys/socketvar.h> /* for socketinit() */
+#include <sys/protosw.h> /* for domaininit() */
+#include <kern/sched_prim.h> /* for thread_wakeup() */
+#include <net/if_ether.h> /* for ether_family_init() */
+#include <net/if_gif.h> /* for gif_init() */
+#include <miscfs/devfs/devfsdefs.h> /* for devfs_kernel_mount() */
+#include <vm/vm_kern.h> /* for kmem_suballoc() */
+#include <sys/msgbuf.h> /* for log_setsize() */
+#include <sys/proc_uuid_policy.h> /* proc_uuid_policy_init() */
+#include <netinet/flow_divert.h> /* flow_divert_init() */
+#include <net/content_filter.h> /* for cfil_init() */
+#include <net/necp.h> /* for necp_init() */
+#include <net/network_agent.h> /* for netagent_init() */
+#include <net/packet_mangler.h> /* for pkt_mnglr_init() */
+#include <net/if_utun.h> /* for utun_register_control() */
+#include <net/if_ipsec.h> /* for ipsec_register_control() */
+#include <net/net_str_id.h> /* for net_str_id_init() */
+#include <net/netsrc.h> /* for netsrc_init() */
+#include <net/ntstat.h> /* for nstat_init() */
+#include <netinet/tcp_cc.h> /* for tcp_cc_init() */
+#include <netinet/mptcp_var.h> /* for mptcp_control_register() */
+#include <net/nwk_wq.h> /* for nwk_wq_init */
+#include <net/restricted_in_port.h> /* for restricted_in_port_init() */
+#include <kern/assert.h> /* for assert() */
+#include <sys/kern_overrides.h> /* for init_system_override() */
+#include <sys/lockf.h> /* for lf_init() */
+#include <sys/fsctl.h>
+
+#include <net/init.h>
+
+#if CONFIG_MACF
+#include <security/mac_framework.h>
+#include <security/mac_internal.h> /* mac_init_bsd() */
+#include <security/mac_mach_internal.h> /* mac_update_task_label() */
+#endif
-#include <mach/shared_memory_server.h>
-#include <vm/vm_shared_memory_server.h>
+#include <machine/exec.h>
+
+#if CONFIG_NETBOOT
+#include <sys/netboot.h>
+#endif
+
+#if CONFIG_IMAGEBOOT
+#include <sys/imageboot.h>
+#endif
+
+#if PFLOG
+#include <net/if_pflog.h>
+#endif
-extern int app_profile; /* on/off switch for pre-heat cache */
-char copyright[] =
-"Copyright (c) 1982, 1986, 1989, 1991, 1993\n\t"
-"The Regents of the University of California. "
-"All rights reserved.\n\n";
+#include <pexpert/pexpert.h>
+#include <machine/pal_routines.h>
+#include <console/video_console.h>
-extern void ux_handler();
+#if CONFIG_XNUPOST
+#include <tests/xnupost.h>
+#endif
+
+void * get_user_regs(thread_t); /* XXX kludge for <machine/thread.h> */
+void IOKitInitializeTime(void); /* XXX */
+void IOSleep(unsigned int); /* XXX */
+void loopattach(void); /* XXX */
+
+const char *const 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 = { .p_comm = "kernel_task", .p_name = "kernel_task" };
+struct session session0;
+struct pgrp pgrp0;
+struct filedesc filedesc0;
+struct plimit limit0;
+struct pstats pstats0;
+struct sigacts sigacts0;
+SECURITY_READ_ONLY_LATE(proc_t) kernproc = &proc0;
+proc_t XNU_PTRAUTH_SIGNED_PTR("initproc") 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;
-char classichandler[32] = {0};
-long classichandler_fsid = -1L;
-long classichandler_fileid = -1L;
+static LCK_GRP_DECLARE(hostname_lck_grp, "hostname");
+LCK_MTX_DECLARE(hostname_lock, &hostname_lck_grp);
+LCK_MTX_DECLARE(domainname_lock, &hostname_lck_grp);
+
+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];
+char domainname[MAXDOMNAMELEN];
+char rootdevice[DEVMAXNAMESIZE];
+
+struct vnode *rootvp;
+bool rootvp_is_ssd = false;
+int boothowto;
+int minimalboot = 0;
+#if CONFIG_DARKBOOT
+int darkboot = 0;
+#endif
+
+#if __arm64__
+int legacy_footprint_entitlement_mode = LEGACY_FOOTPRINT_ENTITLEMENT_IGNORE;
+#endif /* __arm64__ */
-char rootdevice[16]; /* hfs device names have at least 9 chars */
-struct timeval boottime; /* GRODY! This has to go... */
+#if PROC_REF_DEBUG
+__private_extern__ int proc_ref_tracking_disabled = 0; /* disable panics on leaked proc refs across syscall boundary */
+#endif
-#ifdef KMEMSTATS
-struct kmemstats kmemstats[M_LAST];
+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 boolean_t IOSetRecoveryBoot(bsd_bootfail_mode_t, uuid_t, boolean_t);
+extern void kminit(void);
+extern void bsd_bufferinit(void);
+extern void oslog_setsize(int size);
+extern void throttle_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
-int lbolt; /* awoken once a second */
-struct vnode *rootvp;
-int boothowto = RB_DEBUG;
+extern int ncl;
+#if DEVELOPMENT || DEBUG
+extern int syscallfilter_disable;
+#endif // DEVELOPMENT || DEBUG
+
+vm_map_t bsd_pageable_map;
+vm_map_t mb_map;
+
+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;
+
+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) */
+
+__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
+
+
+/*
+ * Allow an alternate dyld to be used for testing.
+ */
+
+#if DEVELOPMENT || DEBUG
+char dyld_alt_path[MAXPATHLEN];
+int use_alt_dyld = 0;
+extern uint64_t dyld_flags;
+#endif
+
+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 select_waitq_init(void);
+static void process_name(const char *, proc_t);
+
+static void setconf(void);
+
+#if CONFIG_BASESYSTEMROOT
+static int bsd_find_basesystem_dmg(char *bsdmgpath_out, bool *rooted_dmg, bool *skip_signature_check);
+static boolean_t bsdmgroot_bootable(void);
+#endif // CONFIG_BASESYSTEMROOT
-#define BSD_PAGABLE_MAP_SIZE (16 * 512 * 1024)
-vm_map_t bsd_pageable_map;
-vm_map_t mb_map;
-semaphore_t execve_semaphore;
+static bool bsd_rooted_ramdisk(void);
-int cmask = CMASK;
+#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);
-int parse_bsd_args(void);
-extern int bsd_hardclockinit;
-extern task_t bsd_init_task;
-extern char init_task_failure_data[];
-extern void time_zone_slock_init(void);
+#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;
-funnel_t *kernel_flock;
-funnel_t *network_flock;
-int disable_funnel = 0; /* disables split funnel */
-int enable_funnel = 0; /* disables split funnel */
+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.
/*
* 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 <machine/vmparam.h>
-struct rlimit vm_initial_limit_stack = { DFLSSIZ, MAXSSIZ };
-struct rlimit vm_initial_limit_data = { DFLDSIZ, MAXDSIZ };
-struct rlimit vm_initial_limit_core = { DFLCSIZ, MAXCSIZ };
+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 struct os_refgrp rlimit_refgrp;
+
+extern thread_t cloneproc(task_t, coalition_t, proc_t, int, int);
+extern int (*mountroot)(void);
+
+LCK_ATTR_DECLARE(proc_lck_attr, 0, 0);
+LCK_GRP_DECLARE(proc_lck_grp, "proc");
+LCK_GRP_DECLARE(proc_slock_grp, "proc-slock");
+LCK_GRP_DECLARE(proc_fdmlock_grp, "proc-fdmlock");
+LCK_GRP_DECLARE(proc_mlock_grp, "proc-mlock");
+LCK_GRP_DECLARE(proc_ucred_mlock_grp, "proc-ucred-mlock");
+LCK_GRP_DECLARE(proc_dirslock_grp, "proc-dirslock");
+LCK_GRP_DECLARE(proc_kqhashlock_grp, "proc-kqhashlock");
+LCK_GRP_DECLARE(proc_knhashlock_grp, "proc-knhashlock");
+
-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);
+LCK_MTX_DECLARE_ATTR(proc_list_mlock, &proc_mlock_grp, &proc_lck_attr);
+#if XNU_TARGET_OS_OSX
/* hook called after root is mounted XXX temporary hack */
void (*mountroot_post_hook)(void);
+void (*unmountroot_pre_hook)(void);
+#endif
+void set_rootvnode(vnode_t);
+
+extern lck_rw_t rootvnode_rw_lock;
+/* called with an iocount and usecount on new_rootvnode */
void
-bsd_init()
+set_rootvnode(vnode_t new_rootvnode)
{
- 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();
-
-
- /* split funnel is enabled by default */
- PE_parse_boot_arg("dfnl", &disable_funnel);
-
- 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");
- }
+ mount_t new_mount = (new_rootvnode != NULL) ? new_rootvnode->v_mount : NULL;
+ vnode_t new_devvp = (new_mount != NULL) ? new_mount->mnt_devvp : NULL;
+ vnode_t old_rootvnode = rootvnode;
+
+ new_rootvnode->v_flag |= VROOT;
+ rootvp = new_devvp;
+ rootvnode = new_rootvnode;
+ filedesc0.fd_cdir = new_rootvnode;
+ if (new_devvp != NULL) {
+ rootdev = vnode_specrdev(new_devvp);
+ } else if (new_mount != NULL) {
+ rootdev = vfs_statfs(new_mount)->f_fsid.val[0]; /* like ATTR_CMN_DEVID */
} else {
- network_flock = kernel_flock;
+ rootdev = NODEV;
+ }
+
+ if (old_rootvnode) {
+ vnode_rele(old_rootvnode);
+ }
+}
+
+#define RAMDEV "md0"
+
+bool
+bsd_rooted_ramdisk(void)
+{
+ bool is_ramdisk = false;
+ char *dev_path = zalloc(ZV_NAMEI);
+ if (dev_path == NULL) {
+ panic("failed to allocate devpath string! \n");
}
+ if (PE_parse_boot_argn("rd", dev_path, MAXPATHLEN)) {
+ if (strncmp(dev_path, RAMDEV, strlen(RAMDEV)) == 0) {
+ is_ramdisk = true;
+ }
+ }
+
+ zfree(ZV_NAMEI, dev_path);
+ return is_ramdisk;
+}
+
+/*
+ * 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;
+ vnode_t init_rootvnode = NULLVP;
+#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];
+ const char *slash_dev = NULL;
+#endif
+
+#define DEBUG_BSDINIT 0
+
+#if DEBUG_BSDINIT
+#define bsd_init_kprintf(x, ...) kprintf("bsd_init: " x, ## __VA_ARGS__)
+#else
+#define bsd_init_kprintf(x, ...)
+#endif
+
+ throttle_init();
+
printf(copyright);
- 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;
-
- p = kernproc;
-
/* 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);
+ bsd_init_kprintf("calling process_name\n");
+ process_name("kernel_task", kernproc);
+
+ /* Allocate proc lock attribute */
+
+ 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);
- if (current_task() != kernel_task)
+ assert(bsd_simul_execs != 0);
+ execargs_cache_size = bsd_simul_execs;
+ execargs_free_count = bsd_simul_execs;
+ execargs_cache = zalloc_permanent(bsd_simul_execs * sizeof(vm_offset_t),
+ ZALIGN(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();
+
/*
* 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 */
-
- TAILQ_INIT(&p->aio_activeq);
- TAILQ_INIT(&p->aio_doneq);
- p->aio_active_count = 0;
- p->aio_done_count = 0;
-
- /* Set the audit info for this process */
- audit_proc_init(p);
+ 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();
+
+ vfs_set_context_kernel(&ut->uu_context);
+
+ TAILQ_INIT(&kernproc->p_aio_activeq);
+ TAILQ_INIT(&kernproc->p_aio_doneq);
+ kernproc->p_aio_total_count = 0;
+
+#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;
- filedesc0.fd_cmask = cmask;
- filedesc0.fd_knlistsize = -1;
+ kernproc->p_fd = &filedesc0;
+ filedesc0.fd_cmask = (mode_t)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_limit->pl_rlimit) / sizeof(kernproc->p_limit->pl_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;
+ os_ref_init_count(&limit0.pl_refcnt, &rlimit_refgrp, 1);
- p->p_stats = &pstats0;
- p->p_sigacts = &sigacts0;
+ kernproc->p_stats = &pstats0;
+ kernproc->p_sigacts = &sigacts0;
+ kernproc->p_subsystem_root_path = NULL;
/*
- * Charge root for one process.
+ * Charge root for one process: launchd.
*/
+ bsd_init_kprintf("calling chgproccnt\n");
(void)chgproccnt(0, 1);
/*
* 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");
+ /*
+ * 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();
-
- ubc_init();
+ bsd_init_kprintf("calling IOKitInitializeTime\n");
+ IOKitInitializeTime();
/* Initialize the file systems. */
+ bsd_init_kprintf("calling vfsinit\n");
vfsinit();
+#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();
-
- /* Initialize syslog */
- log_init();
+ net_str_id_init(); /* for mbuf tags */
+ restricted_in_port_init();
+#endif /* SOCKETS */
/*
* Initializes security event auditing.
* XXX: Should/could this occur later?
*/
- audit_init();
+#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();
+ 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();
- 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();
- sysctl_mib_init();
+#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);
-
- p->p_fd->fd_cdir = NULL;
- p->p_fd->fd_rdir = NULL;
-
-#ifdef GPROF
- /* Initialize kernel profiling. */
- kmstartup();
+ iptap_init();
+#if FLOW_DIVERT
+ flow_divert_init();
+#endif /* FLOW_DIVERT */
+#endif /* SOCKETS */
+#if NETWORKING
+#if NECP
+ /* Initialize Network Extension Control Policies */
+ necp_init();
+#endif
+ netagent_init();
+#endif /* NETWORKING */
+ kernproc->p_fd->fd_cdir = NULL;
+ kernproc->p_fd->fd_rdir = NULL;
+
+#if defined (__x86_64__) && (DEBUG || DEVELOPMENT)
+ hvg_bsd_init();
+#endif /* DEBUG || DEVELOPMENT */
+
+#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
- /* kick off timeout driven events by calling first time */
- thread_wakeup(&lbolt);
- timeout((void (*)(void *))lightning_bolt, 0, hz);
+#if CONFIG_MEMORYSTATUS
+ /* Initialize kernel memory status notifications */
+ bsd_init_kprintf("calling memorystatus_init\n");
+ memorystatus_init();
+#endif /* CONFIG_MEMORYSTATUS */
+ bsd_init_kprintf("calling sysctl_mib_init\n");
+ sysctl_mib_init();
+
+ 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
*/
#include <loop.h>
#if NLOOP > 0
- loopattach(); /* XXX */
+ bsd_init_kprintf("calling loopattach\n");
+ loopattach(); /* XXX */
#endif
-
- /* Register the built-in dlil ethernet interface family */
+#if NGIF
+ /* Initialize gif interface (after lo0) */
+ gif_init();
+#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 */
- vnode_pager_bootstrap();
+#if NETWORKING
+#if CONTENT_FILTER
+ cfil_init();
+#endif
+
+#if PACKET_MANGLER
+ pkt_mnglr_init();
+#endif
+
+ /*
+ * Register subsystems with kernel control handlers
+ */
+ utun_register_control();
+#if IPSEC
+ ipsec_register_control();
+#endif /* IPSEC */
+ netsrc_init();
+ nstat_init();
+ tcp_cc_init();
+#if MPTCP
+ mptcp_control_register();
+#endif /* MPTCP */
+
+ /*
+ * The the networking stack is now initialized so it is a good time to call
+ * the clients that are waiting for the networking stack to be usable.
+ */
+ bsd_init_kprintf("calling net_init_run\n");
+ net_init_run();
+#endif /* NETWORKING */
+
+ 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((struct timeval *)&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);
- filedesc0.fd_cdir = rootvnode;
- VOP_UNLOCK(rootvnode, 0, p);
+ if (VFS_ROOT(mountlist.tqh_first, &init_rootvnode, &context)) {
+ panic("bsd_init: cannot find root vnode: %s", PE_boot_args());
+ }
+ (void)vnode_ref(init_rootvnode);
+ (void)vnode_put(init_rootvnode);
+
+ lck_rw_lock_exclusive(&rootvnode_rw_lock);
+ set_rootvnode(init_rootvnode);
+ lck_rw_unlock_exclusive(&rootvnode_rw_lock);
+ init_rootvnode = NULLVP; /* use rootvnode after this point */
+
+
+ if (!bsd_rooted_ramdisk()) {
+#if CONFIG_IMAGEBOOT
+#if XNU_TARGET_OS_OSX && defined(__arm64__)
+ /* Apple Silicon MacOS */
+ if (!imageboot_desired()) {
+ /* enforce sealedness */
+ int autherr = VNOP_IOCTL(rootvnode, FSIOC_KERNEL_ROOTAUTH, NULL, 0, vfs_context_kernel());
+ if (autherr) {
+ panic("rootvp not authenticated after mounting \n");
+ }
+ }
+#endif // TARGET_OS_OSX && arm64
+#endif // config_imageboot
+ /* Otherwise, noop */
+ }
+
- 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-<boot manifest hash>@<dev node path>
+ *
+ * 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 */
-
+
+#if CONFIG_BASESYSTEMROOT
+#if CONFIG_IMAGEBOOT
+ if (bsdmgroot_bootable()) {
+ int error;
+ bool rooted_dmg = false;
+ bool skip_signature_check = false;
+
+ printf("trying to find and mount BaseSystem dmg as root volume\n");
+#if DEVELOPMENT || DEBUG
+ printf("(set boot-arg -nobsdmgroot to avoid this)\n");
+#endif // DEVELOPMENT || DEBUG
+
+ char *dmgpath = NULL;
+ dmgpath = zalloc_flags(ZV_NAMEI, Z_ZERO | Z_WAITOK);
+ if (dmgpath == NULL) {
+ panic("%s: M_NAMEI zone exhausted", __FUNCTION__);
+ }
+
+ error = bsd_find_basesystem_dmg(dmgpath, &rooted_dmg, &skip_signature_check);
+ if (error) {
+ bsd_init_kprintf("failed to to find BaseSystem dmg: error = %d\n", error);
+ } else {
+ PE_parse_boot_argn("bsdmgpath", dmgpath, sizeof(dmgpath));
+
+ bsd_init_kprintf("found BaseSystem dmg at: %s\n", dmgpath);
+
+ error = imageboot_pivot_image(dmgpath, IMAGEBOOT_DMG, "/System/Volumes/BaseSystem", "System/Volumes/macOS", rooted_dmg, skip_signature_check);
+ if (error) {
+ bsd_init_kprintf("couldn't mount BaseSystem dmg: error = %d", error);
+ }
+ }
+ zfree(ZV_NAMEI, dmgpath);
+ }
+#else /* CONFIG_IMAGEBOOT */
+#error CONFIG_BASESYSTEMROOT requires CONFIG_IMAGEBOOT
+#endif /* CONFIG_IMAGEBOOT */
+#endif /* CONFIG_BASESYSTEMROOT */
+
+#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. */
- siginit(p);
+ 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");
+
+#if XNU_TARGET_OS_OSX
/* 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);
+ }
+#endif
+
+#if 0 /* not yet */
+ consider_zone_gc(FALSE);
+#endif
+
+ 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;
- shared_region_mapping_t system_region;
-
- proc_name("init", p);
-
- ux_handler_init();
-
- 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);
+ proc_t p = current_proc();
+ process_name("init", p);
+ /* Set up exception-to-signal reflection */
+ ux_handler_setup();
+#if CONFIG_MACF
+ mac_cred_label_associate_user(p->p_ucred);
+#endif
- ut = (uthread_t)get_bsdthread_info(th_act);
- ut->uu_ar0 = (void *)get_user_regs(th_act);
+ vm_init_before_launchd();
- bsd_hardclockinit = 1; /* Start bsd hardclock */
- bsd_init_task = get_threadtask(th_act);
- init_task_failure_data[0] = 0;
- system_region = lookup_default_shared_region(ENV_DEFAULT_ROOT,
- machine_slot[cpu_number()].cpu_type);
- if (system_region == NULL) {
- shared_file_boot_time_init(ENV_DEFAULT_ROOT,
- machine_slot[cpu_number()].cpu_type);
- } else {
- vm_set_shared_region(get_threadtask(th_act), system_region);
+#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);
}
- load_init_program(p);
- /* turn on app-profiling i.e. pre-heating */
- app_profile = 1;
-}
-
-void
-lightning_bolt()
-{
- boolean_t funnel_state;
- extern void klogwakeup(void);
-
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
+#endif
- thread_wakeup(&lbolt);
- timeout(lightning_bolt,0,hz);
- klogwakeup();
+ bsd_init_kprintf("bsd_do_post - done");
- (void) thread_funnel_set(kernel_flock, FALSE);
+ load_init_program(p);
+ lock_trace = 1;
}
-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 <sys/disklabel.h> /* 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
+}
+/*
+ * Boot into the flavor of Recovery dictated by `mode`.
+ */
+boolean_t
+bsd_boot_to_recovery(bsd_bootfail_mode_t mode, uuid_t volume_uuid, boolean_t reboot)
+{
+ return IOSetRecoveryBoot(mode, volume_uuid, reboot);
}
-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
+
+ zalloc_first_proc_made();
+
+ /*
+ * 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;
- act_set_astbsd(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;
-
- int len;
+ char namep[48];
+ int msgbuf;
- 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_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("-F", namep)) {
- len = strlen(init_args);
- if(len != 0)
- strcat(init_args," -F");
- else
- strcat(init_args,"-F");
+#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("-v", namep)) {
- len = strlen(init_args);
- if(len != 0)
- strcat(init_args," -v");
- else
- strcat(init_args,"-v");
+ 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;
}
- 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");
+ /* 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;
}
- if (PE_parse_boot_arg("-d", namep)) {
- len = strlen(init_args);
- if(len != 0)
- strcat(init_args," -d");
- else
- strcat(init_args,"-d");
+#if DEVELOPMENT || DEBUG
+ if (PE_parse_boot_argn("-disable_aslr", namep, sizeof(namep))) {
+ bootarg_disable_aslr = 1;
}
+#endif
- PE_parse_boot_arg("srv", &srv);
- PE_parse_boot_arg("ncl", &ncl);
- PE_parse_boot_arg("nbuf", &nbuf);
- return 0;
+
+ 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_DARKBOOT
+ /*
+ * 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
+
+ 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)
+#if CONFIG_BASESYSTEMROOT
+
+extern const char* IOGetBootUUID(void);
+extern const char* IOGetApfsPrebootUUID(void);
+
+// Get the UUID of the Preboot (and Recovery) folder associated with the
+// current boot volume, if applicable. The meaning of the UUID can be
+// filesystem-dependent and not all kinds of boots will have a UUID.
+// If available, the string will be returned. It does not need to be
+// deallocate. (Future: if we need to return the string as a copy that the
+// caller must free, we'll introduce a new functcion for that.)
+// NULL will be returned if the current boot has no applicable Preboot UUID.
+static
+const char *
+get_preboot_uuid(void)
+{
+ const char *maybe_uuid_string;
+
+ // try IOGetApfsPrebootUUID
+ maybe_uuid_string = IOGetApfsPrebootUUID();
+ if (maybe_uuid_string) {
+ uuid_t maybe_uuid;
+ int error = uuid_parse(maybe_uuid_string, maybe_uuid);
+ if (error == 0) {
+ return maybe_uuid_string;
+ }
+ }
+
+ // try IOGetBootUUID
+ maybe_uuid_string = IOGetBootUUID();
+ if (maybe_uuid_string) {
+ uuid_t maybe_uuid;
+ int error = uuid_parse(maybe_uuid_string, maybe_uuid);
+ if (error == 0) {
+ return maybe_uuid_string;
+ }
+ }
+
+ // didn't find it
+ return NULL;
+}
+
+#if defined(__arm64__)
+extern const char *IOGetBootObjectsPath(void);
+#endif
+
+// Find the BaseSystem.dmg to be used as the initial root volume during certain
+// kinds of boots.
+// This may mount volumes and lookup vnodes.
+// The DEVELOPMENT kernel will look for BaseSystem.rooted.dmg first.
+// If it returns 0 (no error), then it also writes the absolute path to the
+// BaseSystem.dmg into its argument (which must be a char[MAXPATHLEN]).
+static
+int
+bsd_find_basesystem_dmg(char *bsdmgpath_out, bool *rooted_dmg, bool *skip_signature_check)
+{
+ int error;
+ size_t len;
+ char *dmgbasepath;
+ char *dmgpath;
+ bool allow_rooted_dmg = false;
+
+ dmgbasepath = zalloc_flags(ZV_NAMEI, Z_ZERO | Z_WAITOK);
+ dmgpath = zalloc_flags(ZV_NAMEI, Z_ZERO | Z_WAITOK);
+ vnode_t imagevp = NULLVP;
+
+#if DEVELOPMENT || DEBUG
+ allow_rooted_dmg = true;
+#endif
+
+ //must provide output bool
+ if (rooted_dmg && skip_signature_check) {
+ *rooted_dmg = false;
+ *skip_signature_check = false;
+ } else {
+ error = EINVAL;
+ goto done;
+ }
+
+ error = vfs_mount_recovery();
+ if (error) {
+ goto done;
+ }
+
+ len = strlcpy(dmgbasepath, "/System/Volumes/Recovery/", MAXPATHLEN);
+ if (len > MAXPATHLEN) {
+ error = ENAMETOOLONG;
+ goto done;
+ }
+
+ if (csr_check(CSR_ALLOW_ANY_RECOVERY_OS) == 0) {
+ *skip_signature_check = true;
+ allow_rooted_dmg = true;
+ }
+
+#if defined(__arm64__)
+ const char *boot_obj_path = IOGetBootObjectsPath();
+ if (boot_obj_path) {
+ if (boot_obj_path[0] == '/') {
+ dmgbasepath[len - 1] = '\0';
+ }
+
+ len = strlcat(dmgbasepath, boot_obj_path, MAXPATHLEN);
+ if (len > MAXPATHLEN) {
+ error = ENAMETOOLONG;
+ goto done;
+ }
+
+ len = strlcat(dmgbasepath, "/usr/standalone/firmware/", MAXPATHLEN);
+ if (len > MAXPATHLEN) {
+ error = ENAMETOOLONG;
+ goto done;
+ }
+
+ if (allow_rooted_dmg) {
+ len = strlcpy(dmgpath, dmgbasepath, MAXPATHLEN);
+ if (len > MAXPATHLEN) {
+ error = ENAMETOOLONG;
+ goto done;
+ }
+
+ len = strlcat(dmgpath, "arm64eBaseSystem.rooted.dmg", MAXPATHLEN);
+ if (len > MAXPATHLEN) {
+ error = ENAMETOOLONG;
+ goto done;
+ }
+
+ error = vnode_lookup(dmgpath, 0, &imagevp, vfs_context_kernel());
+ if (error == 0) {
+ *rooted_dmg = true;
+ *skip_signature_check = true;
+ goto done;
+ }
+ memset(dmgpath, 0, MAXPATHLEN);
+ }
+
+ len = strlcpy(dmgpath, dmgbasepath, MAXPATHLEN);
+ if (len > MAXPATHLEN) {
+ error = ENAMETOOLONG;
+ goto done;
+ }
+
+ len = strlcat(dmgpath, "arm64eBaseSystem.dmg", MAXPATHLEN);
+ if (len > MAXPATHLEN) {
+ error = ENAMETOOLONG;
+ goto done;
+ }
+
+ error = vnode_lookup(dmgpath, 0, &imagevp, vfs_context_kernel());
+ if (error == 0) {
+ goto done;
+ }
+ memset(dmgpath, 0, MAXPATHLEN);
+ dmgbasepath[strlen("/System/Volumes/Recovery/")] = '\0';
+ }
+#endif // __arm64__
+
+ const char *preboot_uuid = get_preboot_uuid();
+ if (preboot_uuid == NULL) {
+ // no preboot? bail out
+ return EINVAL;
+ }
+
+ len = strlcat(dmgbasepath, preboot_uuid, MAXPATHLEN);
+ if (len > MAXPATHLEN) {
+ error = ENAMETOOLONG;
+ goto done;
+ }
+
+ if (allow_rooted_dmg) {
+ // Try BaseSystem.rooted.dmg
+ len = strlcpy(dmgpath, dmgbasepath, MAXPATHLEN);
+ if (len > MAXPATHLEN) {
+ error = ENAMETOOLONG;
+ goto done;
+ }
+
+ len = strlcat(dmgpath, "/BaseSystem.rooted.dmg", MAXPATHLEN);
+ if (len > MAXPATHLEN) {
+ error = ENAMETOOLONG;
+ goto done;
+ }
+
+ error = vnode_lookup(dmgpath, 0, &imagevp, vfs_context_kernel());
+ if (error == 0) {
+ // we found it! success!
+ *rooted_dmg = true;
+ *skip_signature_check = true;
+ goto done;
+ }
+ }
+
+ // Try BaseSystem.dmg
+ len = strlcpy(dmgpath, dmgbasepath, MAXPATHLEN);
+ if (len > MAXPATHLEN) {
+ error = ENAMETOOLONG;
+ goto done;
+ }
+
+ len = strlcat(dmgpath, "/BaseSystem.dmg", MAXPATHLEN);
+ if (len > MAXPATHLEN) {
+ error = ENAMETOOLONG;
+ goto done;
+ }
+
+ error = vnode_lookup(dmgpath, 0, &imagevp, vfs_context_kernel());
+ if (error == 0) {
+ // success!
+ goto done;
+ }
+
+done:
+ if (error == 0) {
+ strlcpy(bsdmgpath_out, dmgpath, MAXPATHLEN);
+ } else {
+ bsd_init_kprintf("%s: error %d\n", __func__, error);
+ }
+ if (imagevp != NULLVP) {
+ vnode_put(imagevp);
+ }
+ zfree(ZV_NAMEI, dmgpath);
+ zfree(ZV_NAMEI, dmgbasepath);
+ return error;
+}
+
+static boolean_t
+bsdmgroot_bootable(void)
{
- 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");
- }
-
- 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);
+#if defined(__arm64__)
+#define BSDMGROOT_DEFAULT true
+#else
+#define BSDMGROOT_DEFAULT false
+#endif
+
+ boolean_t resolved = BSDMGROOT_DEFAULT;
+
+ boolean_t boot_arg_bsdmgroot = false;
+ boolean_t boot_arg_nobsdmgroot = false;
+ int error;
+ mount_t mp;
+ boolean_t root_part_of_volume_group = false;
+ struct vfs_attr vfsattr;
+
+ mp = rootvnode->v_mount;
+ VFSATTR_INIT(&vfsattr);
+ VFSATTR_WANTED(&vfsattr, f_capabilities);
+
+ boot_arg_bsdmgroot = PE_parse_boot_argn("-bsdmgroot", NULL, 0);
+ boot_arg_nobsdmgroot = PE_parse_boot_argn("-nobsdmgroot", NULL, 0);
+
+ error = vfs_getattr(mp, &vfsattr, vfs_context_kernel());
+ if (!error && VFSATTR_IS_SUPPORTED(&vfsattr, f_capabilities)) {
+ if ((vfsattr.f_capabilities.capabilities[VOL_CAPABILITIES_FORMAT] & VOL_CAP_FMT_VOL_GROUPS) &&
+ (vfsattr.f_capabilities.valid[VOL_CAPABILITIES_FORMAT] & VOL_CAP_FMT_VOL_GROUPS)) {
+ root_part_of_volume_group = true;
+ }
+ }
+
+ boolean_t singleuser = (boothowto & RB_SINGLE) != 0;
+
+ // Start with the #defined default above.
+ // If booting to single-user mode, default to false, because single-
+ // user mode inside the BaseSystem is probably not what's wanted.
+ // If the 'yes' boot-arg is set, we'll allow that even in single-user
+ // mode, we'll assume you know what you're doing.
+ // The 'no' boot-arg overpowers the 'yes' boot-arg.
+ // In any case, we will not attempt to root from BaseSystem if the
+ // original (booter-chosen) root volume isn't in a volume group.
+ // This is just out of an abundance of caution: if the boot environment
+ // seems to be "something other than a standard install",
+ // we'll be conservative in messing with the root volume.
+
+ if (singleuser) {
+ resolved = false;
+ }
+
+ if (boot_arg_bsdmgroot) {
+ resolved = true;
+ }
+
+ if (boot_arg_nobsdmgroot) {
+ resolved = false;
+ }
+
+ if (!root_part_of_volume_group) {
+ resolved = false;
+ }
+
+ return resolved;
+}
+#endif // CONFIG_BASESYSTEMROOT
+
+void
+bsd_exec_setup(int scale)
+{
+ 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
projects / apple / xnu.git / blobdiff