#include <sys/param.h>
#include <sys/filedesc.h>
#include <sys/kernel.h>
#include <sys/mount_internal.h>
#include <sys/proc_internal.h>
#include <sys/kauth.h>
#include <sys/systm.h>
#include <sys/vnode_internal.h>
#include <sys/conf.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 <security/audit/audit.h>
#include <sys/malloc.h>
#include <sys/dkstat.h>
#include <sys/codesign.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>
#include <mach/vm_param.h>
#include <vm/vm_map.h>
#include <vm/vm_kern.h>
#include <sys/reboot.h>
#include <dev/busvar.h>
#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>
#include <sys/mcache.h>
#include <sys/mbuf.h>
#include <sys/event.h>
#include <sys/eventhandler.h>
#include <sys/kern_memorystatus.h>
#include <sys/kern_memorystatus_freeze.h>
#include <sys/aio_kern.h>
#include <sys/semaphore.h>
#include <net/dlil.h>
#include <net/kpi_protocol.h>
#include <net/iptap.h>
#include <sys/socketvar.h>
#include <sys/protosw.h>
#include <kern/sched_prim.h>
#include <net/if_ether.h>
#include <net/if_gif.h>
#include <miscfs/devfs/devfsdefs.h>
#include <vm/vm_kern.h>
#include <sys/msgbuf.h>
#include <sys/proc_uuid_policy.h>
#include <netinet/flow_divert.h>
#include <net/content_filter.h>
#include <net/necp.h>
#include <net/network_agent.h>
#include <net/packet_mangler.h>
#include <net/if_utun.h>
#include <net/if_ipsec.h>
#include <net/net_str_id.h>
#include <net/netsrc.h>
#include <net/ntstat.h>
#include <netinet/tcp_cc.h>
#include <netinet/mptcp_var.h>
#include <net/nwk_wq.h>
#include <net/restricted_in_port.h>
#include <kern/assert.h>
#include <sys/kern_overrides.h>
#include <sys/lockf.h>
#include <sys/fsctl.h>
#include <net/init.h>
#if CONFIG_MACF
#include <security/mac_framework.h>
#include <security/mac_internal.h>
#include <security/mac_mach_internal.h>
#endif
#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
#include <pexpert/pexpert.h>
#include <machine/pal_routines.h>
#include <console/video_console.h>
#if CONFIG_XNUPOST
#include <tests/xnupost.h>
#endif
void * get_user_regs(thread_t);
void IOKitInitializeTime(void);
void IOSleep(unsigned int);
void loopattach(void);
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";
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;
int nswdev, nswap;
int nswapmap;
void *swapmap;
struct swdevt swdevt[1];
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;
dev_t dumpdev;
long dumplo;
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
#if PROC_REF_DEBUG
__private_extern__ int proc_ref_tracking_disabled = 0;
#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 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
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
__private_extern__ int bootarg_no_vnode_drain = 0;
#if DEVELOPMENT || DEBUG
__private_extern__ int bootarg_disable_aslr = 0;
#endif
#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
static bool bsd_rooted_ramdisk(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);
#if CONFIG_MACF
#if defined (__i386__) || defined (__x86_64__)
int policy_check_flags = 0;
extern int check_policy_init(int);
#endif
#endif
#if CONFIG_DTRACE
extern void dtrace_postinit(void);
#endif
static void
process_name(const char *s, proc_t p)
{
strlcpy(p->p_comm, s, sizeof(p->p_comm));
strlcpy(p->p_name, s, sizeof(p->p_name));
}
#include <machine/vmparam.h>
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");
LCK_MTX_DECLARE_ATTR(proc_list_mlock, &proc_mlock_grp, &proc_lck_attr);
#if XNU_TARGET_OS_OSX
void (*mountroot_post_hook)(void);
void (*unmountroot_pre_hook)(void);
#endif
void set_rootvnode(vnode_t);
extern lck_rw_t rootvnode_rw_lock;
void
set_rootvnode(vnode_t new_rootvnode)
{
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];
} else {
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;
}
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);
bsd_init_kprintf("calling parse_bsd_args\n");
parse_bsd_args();
#if CONFIG_DEV_KMEM
bsd_init_kprintf("calling dev_kmem_init\n");
dev_kmem_init();
#endif
bsd_init_kprintf("calling kauth_init\n");
kauth_init();
bsd_init_kprintf("calling procinit\n");
procinit();
set_bsdtask_info(kernel_task, (void *)kernproc);
bsd_init_kprintf("calling process_name\n");
process_name("kernel_task", kernproc);
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_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");
}
bsd_init_kprintf("calling get_bsdthread_info\n");
ut = (uthread_t)get_bsdthread_info(current_thread());
#if CONFIG_MACF
mac_policy_initbsd();
#if defined (__i386__) || defined (__x86_64__)
check_policy_init(policy_check_flags);
#endif
#endif
ulock_initialize();
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);
lck_mtx_init(&pgrp0.pg_mlock, &proc_mlock_grp, &proc_lck_attr);
LIST_INSERT_HEAD(&pgrp0.pg_members, kernproc, p_pglist);
kernproc->p_listflag |= P_LIST_INPGRP;
kernproc->p_pgrpid = 0;
kernproc->p_uniqueid = 0;
pgrp0.pg_session = &session0;
pgrp0.pg_membercnt = 1;
session0.s_count = 1;
session0.s_leader = kernproc;
session0.s_listflags = 0;
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;
bsd_init_kprintf("calling bzero\n");
bzero(&temp_cred, sizeof(temp_cred));
bzero(&temp_pcred, sizeof(temp_pcred));
temp_pcred.cr_ngroups = 1;
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");
posix_cred_label(&temp_cred, &temp_pcred);
kernproc->p_ucred = kauth_cred_create(&temp_cred);
PROC_UPDATE_CREDS_ONPROC(kernproc);
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
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);
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 = 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;
os_ref_init_count(&limit0.pl_refcnt, &rlimit_refgrp, 1);
kernproc->p_stats = &pstats0;
kernproc->p_sigacts = &sigacts0;
kernproc->p_subsystem_root_path = NULL;
bsd_init_kprintf("calling chgproccnt\n");
(void)chgproccnt(0, 1);
{
vm_offset_t minimum;
bsd_init_kprintf("calling kmem_suballoc\n");
assert(bsd_pageable_map_size != 0);
ret = kmem_suballoc(kernel_map,
&minimum,
(vm_size_t)bsd_pageable_map_size,
TRUE,
VM_FLAGS_ANYWHERE,
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");
}
}
bsd_init_kprintf("calling bsd_bufferinit\n");
bsd_bufferinit();
bsd_init_kprintf("calling IOKitInitializeTime\n");
IOKitInitializeTime();
bsd_init_kprintf("calling vfsinit\n");
vfsinit();
#if CONFIG_PROC_UUID_POLICY
bsd_init_kprintf("calling proc_uuid_policy_init()\n");
proc_uuid_policy_init();
#endif
#if SOCKETS
mcache_init();
bsd_init_kprintf("calling mbinit\n");
mbinit();
net_str_id_init();
restricted_in_port_init();
#endif
#if CONFIG_AUDIT
bsd_init_kprintf("calling audit_init\n");
audit_init();
#endif
bsd_init_kprintf("calling knote_init\n");
knote_init();
bsd_init_kprintf("calling eventhandler_init\n");
eventhandler_init();
bsd_init_kprintf("calling aio_init\n");
aio_init();
pthread_init();
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 select_waitq_init\n");
select_waitq_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
#if SOCKETS
bsd_init_kprintf("calling socketinit\n");
socketinit();
bsd_init_kprintf("calling domaininit\n");
domaininit();
iptap_init();
#if FLOW_DIVERT
flow_divert_init();
#endif
#endif
#if NETWORKING
#if NECP
necp_init();
#endif
netagent_init();
#endif
kernproc->p_fd->fd_cdir = NULL;
kernproc->p_fd->fd_rdir = NULL;
#if defined (__x86_64__) && (DEBUG || DEVELOPMENT)
hvg_bsd_init();
#endif
#if CONFIG_FREEZE
#ifndef CONFIG_MEMORYSTATUS
#error "CONFIG_FREEZE defined without matching CONFIG_MEMORYSTATUS"
#endif
bsd_init_kprintf("calling memorystatus_freeze_init\n");
memorystatus_freeze_init();
#endif
#if CONFIG_MEMORYSTATUS
bsd_init_kprintf("calling memorystatus_init\n");
memorystatus_init();
#endif
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
#include <loop.h>
#if NLOOP > 0
bsd_init_kprintf("calling loopattach\n");
loopattach();
#endif
#if NGIF
gif_init();
#endif
#if PFLOG
pfloginit();
#endif
#if NETHER > 0
bsd_init_kprintf("calling ether_family_init\n");
ether_family_init();
#endif
#if NETWORKING
#if CONTENT_FILTER
cfil_init();
#endif
#if PACKET_MANGLER
pkt_mnglr_init();
#endif
utun_register_control();
#if IPSEC
ipsec_register_control();
#endif
netsrc_init();
nstat_init();
tcp_cc_init();
#if MPTCP
mptcp_control_register();
#endif
bsd_init_kprintf("calling net_init_run\n");
net_init_run();
#endif
bsd_init_kprintf("calling inittodr\n");
inittodr(0);
while (TRUE) {
int err;
bsd_init_kprintf("calling setconf\n");
setconf();
#if CONFIG_NETBOOT
netboot = (mountroot == netboot_mountroot);
#endif
bsd_init_kprintf("vfs_mountroot\n");
if (0 == (err = vfs_mountroot())) {
break;
}
rootdevice[0] = '\0';
#if CONFIG_NETBOOT
if (netboot) {
PE_display_icon( 0, "noroot");
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);
}
}
#endif
printf("cannot mount root, errno = %d\n", err);
boothowto |= RB_ASKNAME;
}
IOSecureBSDRoot(rootdevice);
context.vc_thread = current_thread();
context.vc_ucred = kernproc->p_ucred;
mountlist.tqh_first->mnt_flag |= MNT_ROOTFS;
bsd_init_kprintf("calling VFS_ROOT\n");
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;
if (!bsd_rooted_ramdisk()) {
#if CONFIG_IMAGEBOOT
#if XNU_TARGET_OS_OSX && defined(__arm64__)
if (!imageboot_desired()) {
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
}
#if CONFIG_NETBOOT
if (netboot) {
int err;
netboot = TRUE;
if ((err = netboot_setup()) != 0) {
PE_display_icon( 0, "noroot");
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);
}
}
}
#endif
#if CONFIG_IMAGEBOOT
#if CONFIG_LOCKERBOOT
pbvn = rootvnode;
pbmnt = pbvn->v_mount;
pbdevp = vfs_statfs(pbmnt)->f_mntfromname;
slash_dev = strnstr(pbdevp, "/dev/", strlen(pbdevp));
if (slash_dev) {
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
imageboot_type_t imageboot_type = imageboot_needed();
if (netboot == FALSE && imageboot_type) {
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
#endif
microtime_with_abstime(&kernproc->p_start, &kernproc->p_stats->ps_start);
#if DEVFS
{
char mounthere[] = "/dev";
bsd_init_kprintf("calling devfs_kernel_mount\n");
devfs_kernel_mount(mounthere);
}
#endif
#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
#error CONFIG_BASESYSTEMROOT requires CONFIG_IMAGEBOOT
#endif
#endif
#if CONFIG_LOCKERBOOT
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
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
if (mountroot_post_hook != NULL) {
mountroot_post_hook();
}
#endif
#if 0
consider_zone_gc(FALSE);
#endif
bsd_init_kprintf("done\n");
}
void
bsdinit_task(void)
{
proc_t p = current_proc();
process_name("init", p);
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
bsd_init_kprintf("bsd_do_post - done");
load_init_program(p);
lock_trace = 1;
}
kern_return_t
bsd_autoconf(void)
{
kprintf("bsd_autoconf: calling kminit\n");
kminit();
{
struct pseudo_init *pi;
for (pi = pseudo_inits; pi->ps_func; pi++) {
(*pi->ps_func)(pi->ps_count);
}
}
return IOKitBSDInit();
}
#include <sys/disklabel.h>
static void
setconf(void)
{
u_int32_t flags;
kern_return_t err;
err = IOFindBSDRoot(rootdevice, sizeof(rootdevice), &rootdev, &flags);
if (err) {
printf("setconf: IOFindBSDRoot returned an error (%d);"
"setting rootdevice to 'sd0a'.\n", err);
rootdev = makedev( 6, 0 );
strlcpy(rootdevice, "sd0a", sizeof(rootdevice));
flags = 0;
}
#if CONFIG_NETBOOT
if (flags & 1) {
mountroot = netboot_mountroot;
} else {
#endif
mountroot = NULL;
#if CONFIG_NETBOOT
}
#endif
}
boolean_t
bsd_boot_to_recovery(bsd_bootfail_mode_t mode, uuid_t volume_uuid, boolean_t reboot)
{
return IOSetRecoveryBoot(mode, volume_uuid, reboot);
}
void
bsd_utaskbootstrap(void)
{
thread_t thread;
struct uthread *ut;
thread = cloneproc(TASK_NULL, COALITION_NULL, kernproc, FALSE, TRUE);
initproc = proc_find(1);
#if __PROC_INTERNAL_DEBUG
if (initproc == PROC_NULL) {
panic("bsd_utaskbootstrap: initproc not set\n");
}
#endif
zalloc_first_proc_made();
proc_signalend(initproc, 0);
proc_transend(initproc, 0);
ut = (struct uthread *)get_bsdthread_info(thread);
ut->uu_sigmask = 0;
act_set_astbsd(thread);
task_clear_return_wait(get_threadtask(thread), TCRW_CLEAR_ALL_WAIT);
}
static void
parse_bsd_args(void)
{
char namep[48];
int msgbuf;
if (PE_parse_boot_argn("-s", namep, sizeof(namep))) {
boothowto |= RB_SINGLE;
}
if (PE_parse_boot_argn("-x", namep, sizeof(namep))) {
boothowto |= RB_SAFEBOOT;
}
if (PE_parse_boot_argn("-minimalboot", namep, sizeof(namep))) {
minimalboot = 1;
}
#if __x86_64__
int no32exec;
if (PE_parse_boot_argn("no32exec", &no32exec, sizeof(no32exec))) {
bootarg_no32exec = !!no32exec;
}
#endif
int execfailure_crashreports;
if (PE_parse_boot_argn("execfailurecrashes", &execfailure_crashreports, sizeof(execfailure_crashreports))) {
bootarg_execfailurereports = !!execfailure_crashreports;
}
if (PE_parse_boot_argn("-vnode_cache_defeat", namep, sizeof(namep))) {
bootarg_vnode_cache_defeat = 1;
}
#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
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
if (PE_parse_boot_argn("-no_vnode_drain", namep, sizeof(namep))) {
bootarg_no_vnode_drain = 1;
}
#if CONFIG_DARKBOOT
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))) {
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
#endif
}
#if CONFIG_BASESYSTEMROOT
extern const char* IOGetBootUUID(void);
extern const char* IOGetApfsPrebootUUID(void);
static
const char *
get_preboot_uuid(void)
{
const char *maybe_uuid_string;
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;
}
}
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;
}
}
return NULL;
}
#if defined(__arm64__)
extern const char *IOGetBootObjectsPath(void);
#endif
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
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) {
return EINVAL;
}
len = strlcat(dmgbasepath, preboot_uuid, 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, "/BaseSystem.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;
}
}
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) {
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)
{
#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;
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