xnu-4570.61.1.tar.gz

[apple/xnu.git] / bsd / kern / bsd_init.c

diff --git a/bsd/kern/bsd_init.c b/bsd/kern/bsd_init.c
index d9b90aff2a4991dd1dcecc0310cadf3b853f8ac3..36b5db056159d5c07df36052c0c277b08d4e98be 100644 (file)
--- a/bsd/kern/bsd_init.c
+++ b/bsd/kern/bsd_init.c
@@ -94,6 +94,7 @@
 #include <sys/time.h>
 #include <sys/systm.h>
 #include <sys/mman.h>
 #include <sys/time.h>
 #include <sys/systm.h>
 #include <sys/mman.h>

+#include <sys/kasl.h>

 
 #include <security/audit/audit.h>
 
 
 #include <security/audit/audit.h>
 


@@ -119,6 +120,8 @@
 #include <mach/exception_types.h>
 #include <dev/busvar.h>                        /* for pseudo_inits */
 #include <sys/kdebug.h>
 #include <mach/exception_types.h>
 #include <dev/busvar.h>                        /* for pseudo_inits */
 #include <sys/kdebug.h>

+#include <sys/monotonic.h>
+#include <sys/reason.h>

 
 #include <mach/mach_types.h>
 #include <mach/vm_prot.h>
 
 #include <mach/mach_types.h>
 #include <mach/vm_prot.h>


@@ -133,6 +136,7 @@
 #include <sys/mcache.h>                        /* for mcache_init() */
 #include <sys/mbuf.h>                  /* for mbinit() */
 #include <sys/event.h>                 /* for knote_init() */
 #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/aio_kern.h>              /* for aio_init() */
 #include <sys/semaphore.h>             /* for psem_cache_init() */
 #include <sys/kern_memorystatus.h>     /* for memorystatus_init() */
 #include <sys/aio_kern.h>              /* for aio_init() */
 #include <sys/semaphore.h>             /* for psem_cache_init() */


@@ -166,6 +170,7 @@
 #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/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 <kern/assert.h>               /* for assert() */
 #include <sys/kern_overrides.h>                /* for init_system_override() */
 
 #include <kern/assert.h>               /* for assert() */
 #include <sys/kern_overrides.h>                /* for init_system_override() */
 


@@ -191,6 +196,7 @@
 #include <net/if_pflog.h>
 #endif
 
 #include <net/if_pflog.h>
 #endif
 

+

 #include <pexpert/pexpert.h>
 #include <machine/pal_routines.h>
 #include <console/video_console.h>
 #include <pexpert/pexpert.h>
 #include <machine/pal_routines.h>
 #include <console/video_console.h>


@@ -238,7 +244,7 @@ int         hostnamelen;
 char   domainname[MAXDOMNAMELEN];
 int            domainnamelen;
 
 char   domainname[MAXDOMNAMELEN];
 int            domainnamelen;
 

-char rootdevice[16];   /* hfs device names have at least 9 chars */
+char rootdevice[DEVMAXNAMESIZE];

 
 #if  KMEMSTATS
 struct kmemstats kmemstats[M_LAST];
 
 #if  KMEMSTATS
 struct kmemstats kmemstats[M_LAST];


@@ -247,11 +253,18 @@ struct    kmemstats kmemstats[M_LAST];
 struct vnode *rootvp;
 int boothowto = RB_DEBUG;
 int minimalboot = 0;
 struct vnode *rootvp;
 int boothowto = RB_DEBUG;
 int minimalboot = 0;

+#if CONFIG_EMBEDDED
+int darkboot = 0;
+#endif

 
 #if PROC_REF_DEBUG
 __private_extern__ int proc_ref_tracking_disabled = 0; /* disable panics on leaked proc refs across syscall boundary */
 #endif
 
 
 #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 kern_return_t IOFindBSDRoot(char *, unsigned int, dev_t *, u_int32_t *);
 extern void IOSecureBSDRoot(const char * rootName);
 extern kern_return_t IOKitBSDInit(void );


@@ -259,8 +272,8 @@ extern void kminit(void);
 extern void file_lock_init(void);
 extern void kmeminit(void);
 extern void bsd_bufferinit(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 throttle_init(void);

-extern void macx_init(void);

 extern void acct_init(void);
 
 extern int serverperfmode;
 extern void acct_init(void);
 
 extern int serverperfmode;


@@ -277,6 +290,12 @@ __private_extern__ vm_offset_t * execargs_cache = NULL;
 
 void bsd_exec_setup(int);
 
 
 void bsd_exec_setup(int);
 

+#if __arm64__
+__private_extern__ int bootarg_no64exec = 0;
+#endif
+#if __x86_64__
+__private_extern__ int bootarg_no32exec = 0;
+#endif

 __private_extern__ int bootarg_vnode_cache_defeat = 0;
 
 #if CONFIG_JETSAM && (DEVELOPMENT || DEBUG)
 __private_extern__ int bootarg_vnode_cache_defeat = 0;
 
 #if CONFIG_JETSAM && (DEVELOPMENT || DEBUG)


@@ -290,16 +309,22 @@ __private_extern__ int bootarg_no_vnode_jetsam = 0;
 __private_extern__ int bootarg_disable_aslr = 0;
 #endif
 
 __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;
+#endif
+

 int    cmask = CMASK;
 extern int customnbuf;
 
 int    cmask = CMASK;
 extern int customnbuf;
 

-void bsd_init(void);

 kern_return_t bsd_autoconf(void);
 void bsd_utaskbootstrap(void);
 
 static void parse_bsd_args(void);
 kern_return_t bsd_autoconf(void);
 void bsd_utaskbootstrap(void);
 
 static void parse_bsd_args(void);

-extern task_t bsd_init_task;
-extern boolean_t init_task_died;

 #if CONFIG_DEV_KMEM
 extern void dev_kmem_init(void);
 #endif
 #if CONFIG_DEV_KMEM
 extern void dev_kmem_init(void);
 #endif


@@ -319,6 +344,8 @@ extern void sysv_sem_lock_init(void);
 extern void sysv_msg_lock_init(void);
 #endif
 
 extern void sysv_msg_lock_init(void);
 #endif
 

+extern void ulock_initialize(void);
+

 #if CONFIG_MACF
 #if defined (__i386__) || defined (__x86_64__)
 /* MACF policy_check configuration flags; see policy_check.c for details */
 #if CONFIG_MACF
 #if defined (__i386__) || defined (__x86_64__)
 /* MACF policy_check configuration flags; see policy_check.c for details */


@@ -367,18 +394,33 @@ 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_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_attr_t * proc_lck_grp_attr;
 lck_attr_t * proc_lck_attr;
 lck_mtx_t * proc_list_mlock;
 lck_mtx_t * proc_klist_mlock;
 
 lck_grp_t * proc_mlock_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;
 

+

 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);
 
 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_early_init(void)
+{
+       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
 /*
  * 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


@@ -449,11 +491,15 @@ bsd_init(void)
        proc_lck_grp_attr= lck_grp_attr_alloc_init();
 
        proc_lck_grp = lck_grp_alloc_init("proc",  proc_lck_grp_attr);
        proc_lck_grp_attr= lck_grp_attr_alloc_init();
 
        proc_lck_grp = lck_grp_alloc_init("proc",  proc_lck_grp_attr);

+

 #if CONFIG_FINE_LOCK_GROUPS
        proc_slock_grp = lck_grp_alloc_init("proc-slock",  proc_lck_grp_attr);
 #if CONFIG_FINE_LOCK_GROUPS
        proc_slock_grp = lck_grp_alloc_init("proc-slock",  proc_lck_grp_attr);

-       proc_fdmlock_grp = lck_grp_alloc_init("proc-fdmlock",  proc_lck_grp_attr);
+       proc_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_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);

 #endif
 #endif

+       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);

        /* Allocate proc lock attribute */
        proc_lck_attr = lck_attr_alloc_init();
 #if 0
        /* Allocate proc lock attribute */
        proc_lck_attr = lck_attr_alloc_init();
 #if 0


@@ -467,12 +513,14 @@ bsd_init(void)
        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);
        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);
 #else
        proc_list_mlock = lck_mtx_alloc_init(proc_lck_grp, proc_lck_attr);
        proc_klist_mlock = lck_mtx_alloc_init(proc_lck_grp, proc_lck_attr);
        lck_mtx_init(&kernproc->p_mlock, proc_lck_grp, proc_lck_attr);
        lck_mtx_init(&kernproc->p_fdmlock, proc_lck_grp, proc_lck_attr);
        lck_spin_init(&kernproc->p_slock, proc_slock_grp, proc_lck_attr);
 #else
        proc_list_mlock = lck_mtx_alloc_init(proc_lck_grp, proc_lck_attr);
        proc_klist_mlock = lck_mtx_alloc_init(proc_lck_grp, proc_lck_attr);
        lck_mtx_init(&kernproc->p_mlock, proc_lck_grp, proc_lck_attr);
        lck_mtx_init(&kernproc->p_fdmlock, proc_lck_grp, proc_lck_attr);

+       lck_mtx_init(&kernproc->p_ucred_mlock, proc_lck_grp, proc_lck_attr);

        lck_spin_init(&kernproc->p_slock, proc_lck_grp, proc_lck_attr);
 #endif
 
        lck_spin_init(&kernproc->p_slock, proc_lck_grp, proc_lck_attr);
 #endif
 


@@ -495,7 +543,6 @@ bsd_init(void)
         * Initialize the MAC Framework
         */
        mac_policy_initbsd();
         * Initialize the MAC Framework
         */
        mac_policy_initbsd();

-       kernproc->p_mac_enforce = 0;

 
 #if defined (__i386__) || defined (__x86_64__)
        /*
 
 #if defined (__i386__) || defined (__x86_64__)
        /*


@@ -509,6 +556,8 @@ bsd_init(void)
        /* Initialize System Override call */
        init_system_override();
        
        /* Initialize System Override call */
        init_system_override();
        

+       ulock_initialize();
+

        /*
         * Create process 0.
         */
        /*
         * Create process 0.
         */


@@ -542,13 +591,21 @@ bsd_init(void)
        LIST_INSERT_HEAD(SESSHASH(0), &session0, s_hash);
        proc_list_unlock();
 
        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;
        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;
 #if DEVELOPMENT || DEBUG
        if (bootarg_disable_aslr)
                kernproc->p_flag |= P_DISABLE_ASLR;


@@ -612,6 +669,8 @@ bsd_init(void)
        filedesc0.fd_knlist = NULL;
        filedesc0.fd_knhash = NULL;
        filedesc0.fd_knhashmask = 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. */
        kernproc->p_limit = &limit0;
 
        /* Create the limits structures. */
        kernproc->p_limit = &limit0;


@@ -648,12 +707,17 @@ bsd_init(void)
                                &minimum,
                                (vm_size_t)bsd_pageable_map_size,
                                TRUE,
                                &minimum,
                                (vm_size_t)bsd_pageable_map_size,
                                TRUE,

-                               VM_FLAGS_ANYWHERE | VM_MAKE_TAG(VM_KERN_MEMORY_BSD),
+                               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_pageable_map);
                if (ret != KERN_SUCCESS) 
                        panic("bsd_init: Failed to allocate bsd pageable map");
        }
 

+       bsd_init_kprintf("calling fpxlog_init\n");
+       fpxlog_init();
+

        /*
         * Initialize buffers and hash links for buffers
         *
        /*
         * Initialize buffers and hash links for buffers
         *


@@ -664,12 +728,6 @@ bsd_init(void)
        bsd_init_kprintf("calling bsd_bufferinit\n");
        bsd_bufferinit();
 
        bsd_init_kprintf("calling bsd_bufferinit\n");
        bsd_bufferinit();
 

-       /* Initialize the execve() semaphore */
-       bsd_init_kprintf("calling semaphore_create\n");
-
-       if (ret != KERN_SUCCESS)
-               panic("bsd_init: Failed to create execve semaphore");
-

        /*
         * Initialize the calendar.
         */
        /*
         * Initialize the calendar.
         */


@@ -679,12 +737,6 @@ bsd_init(void)
        bsd_init_kprintf("calling ubc_init\n");
        ubc_init();
 
        bsd_init_kprintf("calling ubc_init\n");
        ubc_init();
 

-       /*
-        * Initialize device-switches.
-        */
-       bsd_init_kprintf("calling devsw_init() \n");
-       devsw_init();
-

        /* Initialize the file systems. */
        bsd_init_kprintf("calling vfsinit\n");
        vfsinit();
        /* Initialize the file systems. */
        bsd_init_kprintf("calling vfsinit\n");
        vfsinit();


@@ -718,6 +770,10 @@ bsd_init(void)
        bsd_init_kprintf("calling knote_init\n");
        knote_init();
 
        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 for async IO */
        bsd_init_kprintf("calling aio_init\n");
        aio_init();


@@ -761,11 +817,9 @@ bsd_init(void)
         * Initialize protocols.  Block reception of incoming packets
         * until everything is ready.
         */
         * Initialize protocols.  Block reception of incoming packets
         * until everything is ready.
         */

-       bsd_init_kprintf("calling sysctl_register_fixed\n");
-       sysctl_register_fixed(); 
-       bsd_init_kprintf("calling sysctl_mib_init\n");
-       sysctl_mib_init();

 #if NETWORKING
 #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");
        bsd_init_kprintf("calling dlil_init\n");
        dlil_init();
        bsd_init_kprintf("calling proto_kpi_init\n");


@@ -781,7 +835,6 @@ bsd_init(void)
        flow_divert_init();
 #endif /* FLOW_DIVERT */
 #endif /* SOCKETS */
        flow_divert_init();
 #endif /* FLOW_DIVERT */
 #endif /* SOCKETS */

-

        kernproc->p_fd->fd_cdir = NULL;
        kernproc->p_fd->fd_rdir = NULL;
 
        kernproc->p_fd->fd_cdir = NULL;
        kernproc->p_fd->fd_rdir = NULL;
 


@@ -800,9 +853,6 @@ bsd_init(void)
        memorystatus_init();
 #endif /* CONFIG_MEMORYSTATUS */
 
        memorystatus_init();
 #endif /* CONFIG_MEMORYSTATUS */
 

-       bsd_init_kprintf("calling macx_init\n");
-       macx_init();
-

        bsd_init_kprintf("calling acct_init\n");
        acct_init();
 
        bsd_init_kprintf("calling acct_init\n");
        acct_init();
 


@@ -811,9 +861,15 @@ bsd_init(void)
        kmstartup();
 #endif
 
        kmstartup();
 #endif
 

+       bsd_init_kprintf("calling sysctl_mib_init\n");
+       sysctl_mib_init()
+

        bsd_init_kprintf("calling bsd_autoconf\n");
        bsd_autoconf();
 
        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
 #if CONFIG_DTRACE
        dtrace_postinit();
 #endif


@@ -983,10 +1039,6 @@ bsd_init(void)
        bsd_init_kprintf("calling bsd_utaskbootstrap\n");
        bsd_utaskbootstrap();
 
        bsd_init_kprintf("calling bsd_utaskbootstrap\n");
        bsd_utaskbootstrap();
 

-#if defined(__LP64__)
-       kernproc->p_flag |= P_LP64;
-#endif
-

        pal_kernel_announce();
 
        bsd_init_kprintf("calling mountroot_post_hook\n");
        pal_kernel_announce();
 
        bsd_init_kprintf("calling mountroot_post_hook\n");


@@ -999,7 +1051,6 @@ bsd_init(void)
        consider_zone_gc(FALSE);
 #endif
 
        consider_zone_gc(FALSE);
 #endif
 

-

        bsd_init_kprintf("done\n");
 }
 
        bsd_init_kprintf("done\n");
 }
 


@@ -1023,12 +1074,15 @@ bsdinit_task(void)
 
        ut = (uthread_t)get_bsdthread_info(thread);
 
 
        ut = (uthread_t)get_bsdthread_info(thread);
 

-       bsd_init_task = get_threadtask(thread);
-       init_task_died = FALSE;
-

 #if CONFIG_MACF
        mac_cred_label_associate_user(p->p_ucred);
 #endif
 #if CONFIG_MACF
        mac_cred_label_associate_user(p->p_ucred);
 #endif

+
+    vm_init_before_launchd();
+
+
+       bsd_init_kprintf("bsd_do_post - done");
+

        load_init_program(p);
        lock_trace = 1;
 }
        load_init_program(p);
        lock_trace = 1;
 }


@@ -1112,7 +1166,7 @@ bsd_utaskbootstrap(void)
        ut = (struct uthread *)get_bsdthread_info(thread);
        ut->uu_sigmask = 0;
        act_set_astbsd(thread);
        ut = (struct uthread *)get_bsdthread_info(thread);
        ut->uu_sigmask = 0;
        act_set_astbsd(thread);

-       proc_clear_return_wait(initproc, thread);
+       task_clear_return_wait(get_threadtask(thread));

 }
 
 static void
 }
 
 static void


@@ -1139,6 +1193,16 @@ parse_bsd_args(void)
                minimalboot = 1;
        }
 
                minimalboot = 1;
        }
 

+#if __arm64__
+       /* disable 64 bit grading */
+       if (PE_parse_boot_argn("-no64exec", namep, sizeof (namep)))
+               bootarg_no64exec = 1;
+#endif
+#if __x86_64__
+       /* disable 32 bit grading */
+       if (PE_parse_boot_argn("-no32exec", namep, sizeof (namep)))
+               bootarg_no32exec = 1;
+#endif

 
        /* disable vnode_cache_is_authorized() by setting vnode_cache_defeat */
        if (PE_parse_boot_argn("-vnode_cache_defeat", namep, sizeof (namep)))
 
        /* disable vnode_cache_is_authorized() by setting vnode_cache_defeat */
        if (PE_parse_boot_argn("-vnode_cache_defeat", namep, sizeof (namep)))


@@ -1163,6 +1227,7 @@ parse_bsd_args(void)
 
        if (PE_parse_boot_argn("msgbuf", &msgbuf, sizeof (msgbuf))) {
                log_setsize(msgbuf);
 
        if (PE_parse_boot_argn("msgbuf", &msgbuf, sizeof (msgbuf))) {
                log_setsize(msgbuf);

+               oslog_setsize(msgbuf);

        }
 
        if (PE_parse_boot_argn("-novfscache", namep, sizeof(namep))) {
        }
 
        if (PE_parse_boot_argn("-novfscache", namep, sizeof(namep))) {


@@ -1175,6 +1240,18 @@ parse_bsd_args(void)
 #endif /* CONFIG_JETSAM && (DEVELOPMENT || DEBUG) */
 
 
 #endif /* CONFIG_JETSAM && (DEVELOPMENT || DEBUG) */
 
 

+#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))) {
 
 #if PROC_REF_DEBUG
        if (PE_parse_boot_argn("-disable_procref_tracking", namep, sizeof(namep))) {


@@ -1182,7 +1259,27 @@ parse_bsd_args(void)
        }
 #endif
 
        }
 #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));
        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;
+       }
+#endif
+
+#if (DEVELOPMENT|| DEBUG)
+       if (PE_parse_boot_argn("alt-dyld", dyld_alt_path, sizeof(dyld_alt_path))) {
+        if (strlen(dyld_alt_path) > 0) {
+            use_alt_dyld = 1;
+        }
+       }
+#endif

 }
 
 void
 }
 
 void