xnu-3789.31.2.tar.gz

[apple/xnu.git] / bsd / sys / proc_internal.h

diff --git a/bsd/sys/proc_internal.h b/bsd/sys/proc_internal.h
index 4d5533da029e239974f807433a4e164bb3d37c8b..a6bfe6bc34ac8e68f85c9b34604340e7eb3e98a7 100644 (file)
--- a/bsd/sys/proc_internal.h
+++ b/bsd/sys/proc_internal.h
@@ -1,14 +1,19 @@
 /*
 /*

- * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2010 Apple Inc. All rights reserved.

  *
  *

- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@

  * 
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
  * 
  * 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
  * 
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER


@@ -18,7 +23,7 @@
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * 
  * 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) 1995, 1997 Apple Computer, Inc. All Rights Reserved */
 /*-
  */
 /* Copyright (c) 1995, 1997 Apple Computer, Inc. All Rights Reserved */
 /*-


@@ -60,45 +65,122 @@
  *
  *     @(#)proc_internal.h     8.15 (Berkeley) 5/19/95
  */
  *
  *     @(#)proc_internal.h     8.15 (Berkeley) 5/19/95
  */

+/*
+ * NOTICE: This file was modified by SPARTA, Inc. in 2005 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.
+ */

 
 #ifndef _SYS_PROC_INTERNAL_H_
 #define        _SYS_PROC_INTERNAL_H_
 
 
 #ifndef _SYS_PROC_INTERNAL_H_
 #define        _SYS_PROC_INTERNAL_H_
 

+#include <libkern/OSAtomic.h>

 #include <sys/proc.h>
 #include <sys/proc.h>

+#include <mach/resource_monitors.h>     // command/proc_name_t
+
+

 __BEGIN_DECLS
 #include <kern/locks.h>
 __BEGIN_DECLS
 #include <kern/locks.h>

+#if PSYNCH
+#include <kern/thread_call.h>
+#endif /* PSYNCH */

 __END_DECLS
 
 __END_DECLS
 

+#if DEBUG
+#define        __PROC_INTERNAL_DEBUG 1
+#endif
+
+/* 
+ * The short form for various locks that protect fields in the data structures.
+ * PL = Process Lock
+ * PGL = Process Group Lock
+ * PFDL = Process File Desc Lock
+ * PUCL = Process User Credentials Lock
+ * PSL = Process Spin Lock
+ * PPL = Parent Process Lock (planed for later usage)
+ * LL = List Lock
+ * SL = Session Lock
+*/
+struct label;
+

 /*
  * One structure allocated per session.
  */
 struct session {
 /*
  * One structure allocated per session.
  */
 struct session {

-       int     s_count;                /* Ref cnt; pgrps in session. */
-       struct  proc *s_leader;         /* Session leader. */
-       struct  vnode *s_ttyvp;         /* Vnode of controlling terminal. */
-       struct  tty *s_ttyp;            /* Controlling terminal. */
-       pid_t   s_sid;          /* Session ID */
-       char    s_login[MAXLOGNAME];    /* Setlogin() name. */
+       int                     s_count;                /* Ref cnt; pgrps in session. (LL) */
+       struct  proc *          s_leader;               /* Session leader.(static) */
+       struct  vnode *         s_ttyvp;                /* Vnode of controlling terminal.(SL) */
+       int                     s_ttyvid;               /* Vnode id of the controlling terminal (SL) */
+       struct  tty *           s_ttyp;                 /* Controlling terminal. (SL + ttyvp != NULL) */
+       pid_t                   s_ttypgrpid;            /* tty's pgrp id */
+       pid_t                   s_sid;                  /* Session ID (static) */
+       char                    s_login[MAXLOGNAME];    /* Setlogin() name.(SL) */
+       int                     s_flags;                /* Session flags (s_mlock)  */
+       LIST_ENTRY(session)     s_hash;                 /* Hash chain.(LL) */
+       lck_mtx_t               s_mlock;                /* mutex lock to protect session */
+       int                     s_listflags;

 };
 
 };
 

+#define SESSION_NULL (struct session *)0
+
+/*
+ * accessor for s_ttyp which treats it as invalid if s_ttyvp is not valid;
+ * note that s_ttyp is not a reference in the session structre, so it can
+ * become invalid out from under the session if the device is closed, without
+ * this protection.  We can't safely make it into a reference without reflexive
+ * close notification of tty devices through cdevsw[].
+ *
+ * NB: <sys/tty.h> is not in scope and there is not typedef type enforcement,
+ *     or '0' below would be 'TTY_NULL'.
+ */
+#define SESSION_TP(sp) (((sp)->s_ttyvp != 0) ? (sp)->s_ttyp : 0)
+
+/*
+ * Session flags; used to tunnel information to lower layers and line
+ * disciplines, etc.
+ */
+#define        S_DEFAULT       0x00000000      /* No flags set */
+#define        S_NOCTTY        0x00000001      /* Do not associate controlling tty */
+#define S_CTTYREF      0x00000010      /* vnode ref taken by cttyopen */
+
+
+#define S_LIST_TERM    1               /* marked for termination */
+#define        S_LIST_DEAD     2               /* already dead */

 /*
  * One structure allocated per process group.
  */
 struct pgrp {
 /*
  * One structure allocated per process group.
  */
 struct pgrp {

-       LIST_ENTRY(pgrp) pg_hash;       /* Hash chain. */
-       LIST_HEAD(, proc) pg_members;   /* Pointer to pgrp members. */
-       struct  session *pg_session;    /* Pointer to session. */
-       pid_t   pg_id;                  /* Pgrp id. */
-       int     pg_jobc;        /* # procs qualifying pgrp for job control */
+       LIST_ENTRY(pgrp)        pg_hash;        /* Hash chain. (LL) */
+       LIST_HEAD(, proc)       pg_members;     /* Pointer to pgrp members. (PGL) */
+       struct  session *       pg_session;     /* Pointer to session. (LL ) */
+       pid_t                   pg_id;          /* Pgrp id. (static) */
+       int                     pg_jobc;        /* # procs qualifying pgrp for job control (PGL) */
+       int                     pg_membercnt;   /* Number of processes in the pgrocess group (PGL) */
+       int                     pg_refcount;    /* number of current iterators (LL) */
+       unsigned int            pg_listflags;   /* (LL) */
+       lck_mtx_t               pg_mlock;       /* mutex lock to protect pgrp */

 };
 
 };
 

+#define PGRP_FLAG_TERMINATE    1
+#define PGRP_FLAG_WAITTERMINATE 2
+#define PGRP_FLAG_DEAD                 4
+#define PGRP_FLAG_ITERABEGIN   8
+#define PGRP_FLAG_ITERWAIT     0x10
+
+#define PGRP_NULL (struct pgrp *)0

 struct proc;
 
 #define PROC_NULL (struct proc *)0
 
 struct proc;
 
 #define PROC_NULL (struct proc *)0
 

-#define        p_session       p_pgrp->pg_session
-#define        p_pgid          p_pgrp->pg_id
-
+#define PROC_UPDATE_CREDS_ONPROC(p) { \
+       p->p_uid =  kauth_cred_getuid(p->p_ucred); \
+       p->p_gid =  kauth_cred_getgid(p->p_ucred); \
+       p->p_ruid =  kauth_cred_getruid(p->p_ucred); \
+       p->p_rgid =  kauth_cred_getrgid(p->p_ucred); \
+       p->p_svuid =  kauth_cred_getsvuid(p->p_ucred); \
+       p->p_svgid =  kauth_cred_getsvgid(p->p_ucred); \
+       }

 /*
  * Description of a process.
  *
 /*
  * Description of a process.
  *


@@ -111,145 +193,316 @@ struct proc;
  * is running.
  */
 struct proc {
  * is running.
  */
 struct proc {

-       LIST_ENTRY(proc) p_list;        /* List of all processes. */
+       LIST_ENTRY(proc) p_list;                /* List of all processes. */
+
+       pid_t           p_pid;                  /* Process identifier. (static)*/
+       void *          task;                   /* corresponding task (static)*/
+       struct  proc *  p_pptr;                 /* Pointer to parent process.(LL) */
+       pid_t           p_ppid;                 /* process's parent pid number */
+       pid_t           p_pgrpid;               /* process group id of the process (LL)*/
+       uid_t           p_uid;
+       gid_t           p_gid;
+       uid_t           p_ruid;
+       gid_t           p_rgid;
+       uid_t           p_svuid;
+       gid_t           p_svgid;
+       uint64_t        p_uniqueid;             /* process unique ID - incremented on fork/spawn/vfork, remains same across exec. */
+       uint64_t        p_puniqueid;            /* parent's unique ID - set on fork/spawn/vfork, doesn't change if reparented. */
+
+       lck_mtx_t       p_mlock;                /* mutex lock for proc */
+
+       char            p_stat;                 /* S* process status. (PL)*/
+       char            p_shutdownstate;
+       char            p_kdebug;               /* P_KDEBUG eq (CC)*/ 
+       char            p_btrace;               /* P_BTRACE eq (CC)*/
+
+       LIST_ENTRY(proc) p_pglist;              /* List of processes in pgrp.(PGL) */
+       LIST_ENTRY(proc) p_sibling;             /* List of sibling processes. (LL)*/
+       LIST_HEAD(, proc) p_children;           /* Pointer to list of children. (LL)*/
+       TAILQ_HEAD( , uthread) p_uthlist;       /* List of uthreads  (PL) */
+
+       LIST_ENTRY(proc) p_hash;                /* Hash chain. (LL)*/
+       TAILQ_HEAD( ,eventqelt) p_evlist;       /* (PL) */
+
+#if CONFIG_PERSONAS
+       struct persona  *p_persona;
+       LIST_ENTRY(proc) p_persona_list;
+#endif

 
 

-       /* substructures: */
-       struct  ucred *p_ucred;         /* Process owner's identity. */
-       struct  filedesc *p_fd;         /* Ptr to open files structure. */
-       struct  pstats *p_stats;        /* Accounting/statistics (PROC ONLY). */
-       struct  plimit *p_limit;        /* Process limits. */
-       struct  sigacts *p_sigacts;     /* Signal actions, state (PROC ONLY). */
+       lck_mtx_t       p_fdmlock;              /* proc lock to protect fdesc */
+       lck_mtx_t       p_ucred_mlock;          /* mutex lock to protect p_ucred */

 
 

-#define        p_rlimit        p_limit->pl_rlimit
+       /* substructures: */
+       kauth_cred_t    p_ucred;                /* Process owner's identity. (PUCL) */
+       struct  filedesc *p_fd;                 /* Ptr to open files structure. (PFDL) */
+       struct  pstats *p_stats;                /* Accounting/statistics (PL). */
+       struct  plimit *p_limit;                /* Process limits.(PL) */

 
 

-       int     p_flag;                 /* P_* flags. */
-       char    p_stat;                 /* S* process status. */
-       char    p_shutdownstate;
-       char    p_pad1[2];
+       struct  sigacts *p_sigacts;             /* Signal actions, state (PL) */
+        int            p_siglist;              /* signals captured back from threads */
+       lck_spin_t      p_slock;                /* spin lock for itimer/profil protection */

 
 

-       pid_t   p_pid;                  /* Process identifier. */
-       LIST_ENTRY(proc) p_pglist;      /* List of processes in pgrp. */
-       struct  proc *p_pptr;           /* Pointer to parent process. */
-       LIST_ENTRY(proc) p_sibling;     /* List of sibling processes. */
-       LIST_HEAD(, proc) p_children;   /* Pointer to list of children. */
+#define        p_rlimit        p_limit->pl_rlimit

 
 

-/* The following fields are all zeroed upon creation in fork. */
-#define        p_startzero     p_oppid
+       struct  plimit *p_olimit;               /* old process limits  - not inherited by child  (PL) */
+       unsigned int    p_flag;                 /* P_* flags. (atomic bit ops) */
+       unsigned int    p_lflag;                /* local flags  (PL) */
+       unsigned int    p_listflag;             /* list flags (LL) */
+       unsigned int    p_ladvflag;             /* local adv flags (atomic) */
+       int             p_refcount;             /* number of outstanding users(LL) */
+       int             p_childrencnt;          /* children holding ref on parent (LL) */
+       int             p_parentref;            /* children lookup ref on parent (LL) */
+
+       pid_t           p_oppid;                /* Save parent pid during ptrace. XXX */
+       u_int           p_xstat;                /* Exit status for wait; also stop signal. */
+
+#ifdef _PROC_HAS_SCHEDINFO_
+       /* may need cleanup, not used */
+       u_int           p_estcpu;               /* Time averaged value of p_cpticks.(used by aio and proc_comapre) */
+       fixpt_t         p_pctcpu;               /* %cpu for this process during p_swtime (used by aio)*/
+       u_int           p_slptime;              /* used by proc_compare */
+#endif /* _PROC_HAS_SCHEDINFO_ */
+
+       struct  itimerval p_realtimer;          /* Alarm timer. (PSL) */
+       struct  timeval p_rtime;                /* Real time.(PSL)  */
+       struct  itimerval p_vtimer_user;        /* Virtual timers.(PSL)  */
+       struct  itimerval p_vtimer_prof;        /* (PSL) */
+
+       struct  timeval p_rlim_cpu;             /* Remaining rlim cpu value.(PSL) */
+       int             p_debugger;             /*  NU 1: can exec set-bit programs if suser */
+       boolean_t       sigwait;        /* indication to suspend (PL) */
+       void    *sigwait_thread;        /* 'thread' holding sigwait(PL)  */
+       void    *exit_thread;           /* Which thread is exiting(PL)  */
+       int     p_vforkcnt;             /* number of outstanding vforks(PL)  */
+       void *  p_vforkact;             /* activation running this vfork proc)(static)  */
+       int     p_fpdrainwait;          /* (PFDL) */
+       pid_t   p_contproc;     /* last PID to send us a SIGCONT (PL) */
+
+       /* Following fields are info from SIGCHLD (PL) */
+       pid_t   si_pid;                 /* (PL) */
+       u_int   si_status;              /* (PL) */
+       u_int   si_code;                /* (PL) */
+       uid_t   si_uid;                 /* (PL) */
+
+       void * vm_shm;                  /* (SYSV SHM Lock) for sysV shared memory */
+
+#if CONFIG_DTRACE
+       user_addr_t                     p_dtrace_argv;                  /* (write once, read only after that) */
+       user_addr_t                     p_dtrace_envp;                  /* (write once, read only after that) */
+       lck_mtx_t                       p_dtrace_sprlock;               /* sun proc lock emulation */
+       int                             p_dtrace_probes;                /* (PL) are there probes for this proc? */
+       u_int                           p_dtrace_count;                 /* (sprlock) number of DTrace tracepoints */
+        uint8_t                         p_dtrace_stop;                  /* indicates a DTrace-desired stop */
+       struct dtrace_ptss_page*        p_dtrace_ptss_pages;            /* (sprlock) list of user ptss pages */
+       struct dtrace_ptss_page_entry*  p_dtrace_ptss_free_list;        /* (atomic) list of individual ptss entries */
+       struct dtrace_helpers*          p_dtrace_helpers;               /* (dtrace_lock) DTrace per-proc private */
+       struct dof_ioctl_data*          p_dtrace_lazy_dofs;             /* (sprlock) unloaded dof_helper_t's */
+#endif /* CONFIG_DTRACE */
+
+/* XXXXXXXXXXXXX BCOPY'ed on fork XXXXXXXXXXXXXXXX */
+/* The following fields are all copied upon creation in fork. */
+#define        p_startcopy     p_argslen

 
 

-       pid_t   p_oppid;         /* Save parent pid during ptrace. XXX */
-       int     p_dupfd;         /* Sideways return value from fdopen. XXX */
+       u_int   p_argslen;       /* Length of process arguments. */
+       int     p_argc;                 /* saved argc for sysctl_procargs() */
+       user_addr_t user_stack;         /* where user stack was allocated */
+       struct  vnode *p_textvp;        /* Vnode of executable. */
+       off_t   p_textoff;              /* offset in executable vnode */

 
 

-       /* scheduling */
-       u_int   p_estcpu;        /* Time averaged value of p_cpticks. */
-       int     p_cpticks;       /* Ticks of cpu time. */
-       fixpt_t p_pctcpu;        /* %cpu for this process during p_swtime */
-       void    *p_wchan;        /* Sleep address. */
-       char    *p_wmesg;        /* Reason for sleep. */
-       u_int   p_swtime;        /* DEPRECATED (Time swapped in or out.) */
-#define        p_argslen p_swtime       /* Length of process arguments. */
-       u_int   p_slptime;       /* Time since last blocked. */
+       sigset_t p_sigmask;             /* DEPRECATED */
+       sigset_t p_sigignore;   /* Signals being ignored. (PL) */
+       sigset_t p_sigcatch;    /* Signals being caught by user.(PL)  */

 
 

-       struct  itimerval p_realtimer;  /* Alarm timer. */
-       struct  timeval p_rtime;        /* Real time. */
-       u_quad_t p_uticks;              /* Statclock hits in user mode. */
-       u_quad_t p_sticks;              /* Statclock hits in system mode. */
-       u_quad_t p_iticks;              /* Statclock hits processing intr. */
+       u_char  p_priority;     /* (NU) Process priority. */
+       u_char  p_resv0;        /* (NU) User-priority based on p_cpu and p_nice. */
+       char    p_nice;         /* Process "nice" value.(PL) */
+       u_char  p_resv1;        /* (NU) User-priority based on p_cpu and p_nice. */

 
 

-       int     p_traceflag;            /* Kernel trace points. */
-       struct  vnode *p_tracep;        /* Trace to vnode. */
+#if CONFIG_MACF
+       int     p_mac_enforce;                  /* MAC policy enforcement control */
+#endif

 
 

-       sigset_t p_siglist;             /* DEPRECATED. */
+       // types currently in sys/param.h
+       command_t   p_comm;
+       proc_name_t p_name;     /* can be changed by the process */

 
 

-       struct  vnode *p_textvp;        /* Vnode of executable. */

 
 

-/* End area that is zeroed on creation. */
-#define        p_endzero       p_hash.le_next
+       struct  pgrp *p_pgrp;           /* Pointer to process group. (LL) */
+       uint32_t        p_csflags;      /* flags for codesign (PL) */
+       uint32_t        p_pcaction;     /* action  for process control on starvation */
+       uint8_t p_uuid[16];             /* from LC_UUID load command */

 
 

-       /*
-        * Not copied, not zero'ed.
-        * Belongs after p_pid, but here to avoid shifting proc elements.
+       /* 
+        * CPU type and subtype of binary slice executed in
+        * this process.  Protected by proc lock.

         */
         */

-       LIST_ENTRY(proc) p_hash;        /* Hash chain. */
-       TAILQ_HEAD( ,eventqelt) p_evlist;
+       cpu_type_t      p_cputype;
+       cpu_subtype_t   p_cpusubtype;

 
 

-/* The following fields are all copied upon creation in fork. */
-#define        p_startcopy     p_sigmask
+/* End area that is copied on creation. */
+/* XXXXXXXXXXXXX End of BCOPY'ed on fork (AIOLOCK)XXXXXXXXXXXXXXXX */
+#define        p_endcopy       p_aio_total_count
+       int             p_aio_total_count;              /* all allocated AIO requests for this proc */
+       int             p_aio_active_count;             /* all unfinished AIO requests for this proc */
+       TAILQ_HEAD( , aio_workq_entry ) p_aio_activeq;  /* active async IO requests */
+       TAILQ_HEAD( , aio_workq_entry ) p_aio_doneq;    /* completed async IO requests */

 
 

-       sigset_t p_sigmask;             /* DEPRECATED */
-       sigset_t p_sigignore;   /* Signals being ignored. */
-       sigset_t p_sigcatch;    /* Signals being caught by user. */
+       struct klist p_klist;  /* knote list (PL ?)*/

 
 

-       u_char  p_priority;     /* Process priority. */
-       u_char  p_usrpri;       /* User-priority based on p_cpu and p_nice. */
-       char    p_nice;         /* Process "nice" value. */
-       char    p_comm[MAXCOMLEN+1];
+       struct  rusage_superset *p_ru;  /* Exit information. (PL) */
+       int             p_sigwaitcnt;
+       thread_t        p_signalholder;
+       thread_t        p_transholder;

 
 

-       struct  pgrp *p_pgrp;   /* Pointer to process group. */
-
-/* End area that is copied on creation. */
-#define        p_endcopy       p_xstat
-       
-       u_short p_xstat;        /* Exit status for wait; also stop signal. */
+       /* DEPRECATE following field  */

        u_short p_acflag;       /* Accounting flags. */
        u_short p_acflag;       /* Accounting flags. */

-       struct  rusage *p_ru;   /* Exit information. XXX */
-
-       int     p_debugger;     /* 1: can exec set-bit programs if suser */
+       volatile u_short p_vfs_iopolicy;        /* VFS iopolicy flags. (atomic bit ops) */
+
+       user_addr_t     p_threadstart;          /* pthread start fn */
+       user_addr_t     p_wqthread;             /* pthread workqueue fn */
+       int     p_pthsize;                      /* pthread size */
+       uint32_t        p_pth_tsd_offset;       /* offset from pthread_t to TSD for new threads */
+       user_addr_t     p_stack_addr_hint;      /* stack allocation hint for wq threads */
+       void *  p_wqptr;                        /* workq ptr */
+       struct kqueue * p_wqkqueue;             /* private workq kqueue */
+
+       struct  timeval p_start;                /* starting time */
+       void *  p_rcall;
+       int             p_ractive;
+       int     p_idversion;            /* version of process identity */
+       void *  p_pthhash;                      /* pthread waitqueue hash */
+       volatile uint64_t was_throttled __attribute__((aligned(8))); /* Counter for number of throttled I/Os */
+       volatile uint64_t did_throttle __attribute__((aligned(8)));  /* Counter for number of I/Os this proc throttled */

 
 

-       void    *task;                  /* corresponding task */
-       void    *sigwait_thread;        /* 'thread' holding sigwait */
-       char    signal_lock[72];
-       boolean_t        sigwait;       /* indication to suspend */
-       void    *exit_thread;           /* Which thread is exiting? */
-       user_addr_t user_stack;         /* where user stack was allocated */
-       void * exitarg;                 /* exit arg for proc terminate */
-       void * vm_shm;                  /* for sysV shared memory */
-       int  p_argc;                    /* saved argc for sysctl_procargs() */
-       int             p_vforkcnt;             /* number of outstanding vforks */
-    void *  p_vforkact;     /* activation running this vfork proc */
-       TAILQ_HEAD( , uthread) p_uthlist; /* List of uthreads  */
-       /* Following fields are info from SIGCHLD */
-       pid_t   si_pid;
-       u_short si_status;
-       u_short si_code;
-       uid_t   si_uid;
-       TAILQ_HEAD( , aio_workq_entry ) aio_activeq; /* active async IO requests */
-       int             aio_active_count;       /* entries on aio_activeq */
-       TAILQ_HEAD( , aio_workq_entry ) aio_doneq;       /* completed async IO requests */
-       int             aio_done_count;         /* entries on aio_doneq */
-
-       struct klist p_klist;  /* knote list */
-       lck_mtx_t       p_mlock;        /* proc lock to protect evques */
-       lck_mtx_t       p_fdmlock;      /* proc lock to protect evques */
+#if DIAGNOSTIC

        unsigned int p_fdlock_pc[4];
        unsigned int p_fdunlock_pc[4];
        unsigned int p_fdlock_pc[4];
        unsigned int p_fdunlock_pc[4];

-       int             p_fpdrainwait;
-       unsigned int            p_lflag;                /* local flags */
-       unsigned int            p_ladvflag;             /* local adv flags*/
-       unsigned int            p_internalref;  /* temp refcount field */
-#if DIAGNOSTIC

 #if SIGNAL_DEBUG
        unsigned int lockpc[8];
        unsigned int unlockpc[8];
 #endif /* SIGNAL_DEBUG */
 #endif /* DIAGNOSTIC */
 #if SIGNAL_DEBUG
        unsigned int lockpc[8];
        unsigned int unlockpc[8];
 #endif /* SIGNAL_DEBUG */
 #endif /* DIAGNOSTIC */

+       uint64_t        p_dispatchqueue_offset;
+       uint64_t        p_dispatchqueue_serialno_offset;
+#if VM_PRESSURE_EVENTS
+       struct timeval  vm_pressure_last_notify_tstamp;
+#endif
+
+#if CONFIG_MEMORYSTATUS
+       /* Fields protected by proc list lock */
+       TAILQ_ENTRY(proc) p_memstat_list;               /* priority bucket link */
+       uint32_t          p_memstat_state;              /* state */
+       int32_t           p_memstat_effectivepriority;  /* priority after transaction state accounted for */
+       int32_t           p_memstat_requestedpriority;  /* active priority */
+       uint32_t          p_memstat_dirty;              /* dirty state */
+       uint64_t          p_memstat_userdata;           /* user state */
+       uint64_t          p_memstat_idledeadline;       /* time at which process became clean */
+       uint64_t          p_memstat_idle_start;         /* abstime process transitions into the idle band */
+       uint64_t          p_memstat_idle_delta;         /* abstime delta spent in idle band */
+       int32_t           p_memstat_memlimit;           /* cached memory limit, toggles between active and inactive limits */
+       int32_t           p_memstat_memlimit_active;    /* memory limit enforced when process is in active jetsam state */
+       int32_t           p_memstat_memlimit_inactive;  /* memory limit enforced when process is in inactive jetsam state */
+#if CONFIG_FREEZE
+       uint32_t          p_memstat_suspendedfootprint; /* footprint at time of suspensions */
+#endif /* CONFIG_FREEZE */
+#endif /* CONFIG_MEMORYSTATUS */
+
+       /* cached proc-specific data required for corpse inspection */
+       pid_t             p_responsible_pid;    /* pid resonsible for this process */
+
+       struct os_reason     *p_exit_reason;

 };
 
 };
 

+#define PGRPID_DEAD 0xdeaddead
+
+/* p_listflag */ 
+#define P_LIST_DRAIN                           0x00000001
+#define P_LIST_DRAINWAIT               0x00000002
+#define P_LIST_DRAINED                 0x00000004
+#define P_LIST_DEAD                            0x00000008
+#define P_LIST_WAITING                 0x00000010
+#define P_LIST_EXITED                  0x00000040 
+#define P_LIST_CHILDDRSTART            0x00000080 
+#define P_LIST_CHILDDRAINED            0x00000100 
+#define P_LIST_CHILDDRWAIT     0x00000200 
+#define P_LIST_CHILDLKWAIT     0x00000400 
+#define P_LIST_DEADPARENT      0x00000800 
+#define P_LIST_PARENTREFWAIT           0x00001000 
+#define P_LIST_INCREATE                0x00002000 
+/* 0x4000 &  0x8000 Not used */
+#define P_LIST_INHASH                  0x00010000      /* process is in hash */
+#define P_LIST_INPGRP                  0x00020000      /* process is in pgrp */
+#define P_LIST_PGRPTRANS               0x00040000      /* pgrp is getting replaced */
+#define P_LIST_PGRPTRWAIT              0x00080000      /* wait for pgrp replacement */
+#define P_LIST_EXITCOUNT               0x00100000      /* counted for process exit */
+#define P_LIST_REFWAIT                 0x00200000      /* wait to take a ref */
+ 

 
 /* local flags */
 
 /* local flags */

-#define        P_LDELAYTERM            0x1     /* */
-#define        P_LNOZOMB               0x2     /* */
-#define P_LLOW_PRI_IO          0x4
-#define P_LPEXIT               0x8
-#define P_LBACKGROUND_IO       0x10
-#define P_LWAITING             0x20
-#define P_LREFDRAIN            0x40
-#define P_LREFDRAINWAIT                0x80
-#define P_LREFDEAD             0x100
-
-/* advisory flags in the proc */
+#define        P_LDELAYTERM    0x00000001      /* */
+#define        P_LNOZOMB       0x00000002      /* */
+#define P_LTERM                0x00000004      /* */ 
+#define P_LEXIT                0x00000008      /* */
+#define P_LPEXIT       0x00000010
+#define        P_LTRANSCOMMIT  0x00000020      /* process is committed to trans */
+#define        P_LINTRANSIT    0x00000040      /* process in exec or in creation */
+#define        P_LTRANSWAIT    0x00000080      /* waiting for trans to complete */
+#define P_LVFORK        0x00000100      /* parent proc of a vfork */
+#define P_LINVFORK      0x00000200      /* child proc of a vfork */
+#define P_LTRACED       0x00000400      /* */
+#define P_LSIGEXC       0x00000800      /* */
+#define P_LNOATTACH     0x00001000      /* */
+#define P_LPPWAIT       0x00002000      /* */
+#define        P_LKQWDRAIN     0x00004000
+#define        P_LKQWDRAINWAIT 0x00008000
+#define        P_LKQWDEAD      0x00010000
+#define        P_LLIMCHANGE    0x00020000
+#define        P_LLIMWAIT      0x00040000
+#define P_LWAITED      0x00080000 
+#define P_LINSIGNAL            0x00100000 
+#define P_LRAGE_VNODES 0x00400000
+#define P_LREGISTER    0x00800000      /* thread start fns registered  */
+#define P_LVMRSRCOWNER 0x01000000      /* can handle the resource ownership of  */
+#define P_LTERM_DECRYPTFAIL    0x04000000      /* process terminating due to key failure to decrypt */
+#define        P_LTERM_JETSAM          0x08000000      /* process is being jetsam'd */
+#define P_JETSAM_VMPAGESHORTAGE        0x00000000      /* jetsam: lowest jetsam priority proc, killed due to vm page shortage */
+#define P_JETSAM_VMTHRASHING   0x10000000      /* jetsam: lowest jetsam priority proc, killed due to vm thrashing */
+#define P_JETSAM_HIWAT         0x20000000      /* jetsam: high water mark */
+#define P_JETSAM_PID           0x30000000      /* jetsam: pid */
+#define P_JETSAM_IDLEEXIT      0x40000000      /* jetsam: idle exit */
+#define P_JETSAM_VNODE         0x50000000      /* jetsam: vnode kill */
+#define P_JETSAM_FCTHRASHING   0x60000000      /* jetsam: lowest jetsam priority proc, killed due to filecache thrashing */
+#define P_JETSAM_MASK          0x70000000      /* jetsam type mask */
+
+/* Process control state for resource starvation */
+#define P_PCTHROTTLE   1
+#define P_PCSUSP       2
+#define P_PCKILL       3
+#define P_PCMAX                3
+
+/* Process control action state on resrouce starvation */
+#define PROC_ACTION_MASK 0xffff0000;
+#define PROC_CONTROL_STATE(p) (p->p_pcaction & P_PCMAX)
+#define PROC_ACTION_STATE(p) ((p->p_pcaction >> 16) & P_PCMAX)
+#define PROC_SETACTION_STATE(p) (p->p_pcaction = (PROC_CONTROL_STATE(p) | (PROC_CONTROL_STATE(p) << 16)))
+#define PROC_RESETACTION_STATE(p) (p->p_pcaction = PROC_CONTROL_STATE(p))
+
+/* Process exit reason macros */
+#define PROC_HAS_EXITREASON(p) (p->p_exit_reason != OS_REASON_NULL)
+#define PROC_EXITREASON_FLAGS(p) p->p_exit_reason->osr_flags
+
+/* additional process flags */

 #define P_LADVLOCK             0x01
 #define P_LADVLOCK             0x01

+#define P_LXBKIDLEINPROG       0x02
+
+/* p_vfs_iopolicy flags */
+#define P_VFS_IOPOLICY_FORCE_HFS_CASE_SENSITIVITY 0x0001
+
+/* process creation arguments */
+#define        PROC_CREATE_FORK        0       /* independent child (running) */
+#define        PROC_CREATE_SPAWN       1       /* independent child (suspended) */
+#define        PROC_CREATE_VFORK       2       /* child borrows context */

 
 

-// LP64todo - should this move?

 /* LP64 version of extern_proc.  all pointers 
  * grow when we're dealing with a 64-bit process.
  * WARNING - keep in sync with extern_proc
 /* LP64 version of extern_proc.  all pointers 
  * grow when we're dealing with a 64-bit process.
  * WARNING - keep in sync with extern_proc


@@ -259,17 +512,69 @@ struct    proc {
 #ifdef KERNEL
 #include <sys/time.h>  /* user_timeval, user_itimerval */
 
 #ifdef KERNEL
 #include <sys/time.h>  /* user_timeval, user_itimerval */
 

-#if __DARWIN_ALIGN_NATURAL
-#pragma options align=natural
-#endif
-
-struct user_extern_proc {
+/* This packing breaks symmetry with userspace side (struct extern_proc 
+ * of proc.h) for the ARMV7K ABI where 64-bit types are 64-bit aligned
+ */
+#pragma pack(4)
+struct user32_extern_proc {
+       union {
+               struct {
+                       uint32_t __p_forw;      /* Doubly-linked run/sleep queue. */
+                       uint32_t __p_back;
+               } p_st1;
+               struct user32_timeval __p_starttime;    /* process start time */
+       } p_un;
+       uint32_t        p_vmspace;      /* Address space. */
+       uint32_t        p_sigacts;      /* Signal actions, state (PROC ONLY). */
+       int             p_flag;                 /* P_* flags. */
+       char    p_stat;                 /* S* process status. */
+       pid_t   p_pid;                  /* Process identifier. */
+       pid_t   p_oppid;                /* Save parent pid during ptrace. XXX */
+       int             p_dupfd;                /* Sideways return value from fdopen. XXX */
+       /* Mach related  */
+       uint32_t user_stack;    /* where user stack was allocated */
+       uint32_t exit_thread;  /* XXX Which thread is exiting? */
+       int             p_debugger;             /* allow to debug */
+       boolean_t       sigwait;        /* indication to suspend */
+       /* scheduling */
+       u_int   p_estcpu;        /* Time averaged value of p_cpticks. */
+       int             p_cpticks;       /* Ticks of cpu time. */
+       fixpt_t p_pctcpu;        /* %cpu for this process during p_swtime */
+       uint32_t        p_wchan;         /* Sleep address. */
+       uint32_t        p_wmesg;         /* Reason for sleep. */
+       u_int   p_swtime;        /* Time swapped in or out. */
+       u_int   p_slptime;       /* Time since last blocked. */
+       struct  user32_itimerval p_realtimer;   /* Alarm timer. */
+       struct  user32_timeval p_rtime; /* Real time. */
+       u_quad_t p_uticks;              /* Statclock hits in user mode. */
+       u_quad_t p_sticks;              /* Statclock hits in system mode. */
+       u_quad_t p_iticks;              /* Statclock hits processing intr. */
+       int             p_traceflag;            /* Kernel trace points. */
+       uint32_t        p_tracep;       /* Trace to vnode. */
+       int             p_siglist;              /* DEPRECATED */
+       uint32_t        p_textvp;       /* Vnode of executable. */
+       int             p_holdcnt;              /* If non-zero, don't swap. */
+       sigset_t p_sigmask;     /* DEPRECATED. */
+       sigset_t p_sigignore;   /* Signals being ignored. */
+       sigset_t p_sigcatch;    /* Signals being caught by user. */
+       u_char  p_priority;     /* Process priority. */
+       u_char  p_usrpri;       /* User-priority based on p_cpu and p_nice. */
+       char    p_nice;         /* Process "nice" value. */
+       char    p_comm[MAXCOMLEN+1];
+       uint32_t        p_pgrp; /* Pointer to process group. */
+       uint32_t        p_addr; /* Kernel virtual addr of u-area (PROC ONLY). */
+       u_short p_xstat;        /* Exit status for wait; also stop signal. */
+       u_short p_acflag;       /* Accounting flags. */
+       uint32_t        p_ru;   /* Exit information. XXX */
+};
+#pragma pack()
+struct user64_extern_proc {

        union {
                struct {
                        user_addr_t __p_forw;   /* Doubly-linked run/sleep queue. */
                        user_addr_t __p_back;
                } p_st1;
        union {
                struct {
                        user_addr_t __p_forw;   /* Doubly-linked run/sleep queue. */
                        user_addr_t __p_back;
                } p_st1;

-               struct user_timeval __p_starttime;      /* process start time */
+               struct user64_timeval __p_starttime;    /* process start time */

        } p_un;
        user_addr_t     p_vmspace;      /* Address space. */
        user_addr_t             p_sigacts;      /* Signal actions, state (PROC ONLY). */
        } p_un;
        user_addr_t     p_vmspace;      /* Address space. */
        user_addr_t             p_sigacts;      /* Signal actions, state (PROC ONLY). */


@@ -279,7 +584,7 @@ struct user_extern_proc {
        pid_t   p_oppid;                /* Save parent pid during ptrace. XXX */
        int             p_dupfd;                /* Sideways return value from fdopen. XXX */
        /* Mach related  */
        pid_t   p_oppid;                /* Save parent pid during ptrace. XXX */
        int             p_dupfd;                /* Sideways return value from fdopen. XXX */
        /* Mach related  */

-       user_addr_t user_stack; /* where user stack was allocated */
+       user_addr_t user_stack __attribute((aligned(8)));       /* where user stack was allocated */

        user_addr_t exit_thread;  /* XXX Which thread is exiting? */
        int             p_debugger;             /* allow to debug */
        boolean_t       sigwait;        /* indication to suspend */
        user_addr_t exit_thread;  /* XXX Which thread is exiting? */
        int             p_debugger;             /* allow to debug */
        boolean_t       sigwait;        /* indication to suspend */


@@ -287,19 +592,19 @@ struct user_extern_proc {
        u_int   p_estcpu;        /* Time averaged value of p_cpticks. */
        int             p_cpticks;       /* Ticks of cpu time. */
        fixpt_t p_pctcpu;        /* %cpu for this process during p_swtime */
        u_int   p_estcpu;        /* Time averaged value of p_cpticks. */
        int             p_cpticks;       /* Ticks of cpu time. */
        fixpt_t p_pctcpu;        /* %cpu for this process during p_swtime */

-       user_addr_t     p_wchan;         /* Sleep address. */
+       user_addr_t     p_wchan __attribute((aligned(8)));       /* Sleep address. */

        user_addr_t     p_wmesg;         /* Reason for sleep. */
        u_int   p_swtime;        /* Time swapped in or out. */
        u_int   p_slptime;       /* Time since last blocked. */
        user_addr_t     p_wmesg;         /* Reason for sleep. */
        u_int   p_swtime;        /* Time swapped in or out. */
        u_int   p_slptime;       /* Time since last blocked. */

-       struct  user_itimerval p_realtimer;     /* Alarm timer. */
-       struct  user_timeval p_rtime;   /* Real time. */
+       struct  user64_itimerval p_realtimer;   /* Alarm timer. */
+       struct  user64_timeval p_rtime; /* Real time. */

        u_quad_t p_uticks;              /* Statclock hits in user mode. */
        u_quad_t p_sticks;              /* Statclock hits in system mode. */
        u_quad_t p_iticks;              /* Statclock hits processing intr. */
        int             p_traceflag;            /* Kernel trace points. */
        u_quad_t p_uticks;              /* Statclock hits in user mode. */
        u_quad_t p_sticks;              /* Statclock hits in system mode. */
        u_quad_t p_iticks;              /* Statclock hits processing intr. */
        int             p_traceflag;            /* Kernel trace points. */

-       user_addr_t     p_tracep;       /* Trace to vnode. */
+       user_addr_t     p_tracep __attribute((aligned(8)));     /* Trace to vnode. */

        int             p_siglist;              /* DEPRECATED */
        int             p_siglist;              /* DEPRECATED */

-       user_addr_t     p_textvp;       /* Vnode of executable. */
+       user_addr_t     p_textvp __attribute((aligned(8)));     /* Vnode of executable. */

        int             p_holdcnt;              /* If non-zero, don't swap. */
        sigset_t p_sigmask;     /* DEPRECATED. */
        sigset_t p_sigignore;   /* Signals being ignored. */
        int             p_holdcnt;              /* If non-zero, don't swap. */
        sigset_t p_sigmask;     /* DEPRECATED. */
        sigset_t p_sigignore;   /* Signals being ignored. */


@@ -308,16 +613,12 @@ struct user_extern_proc {
        u_char  p_usrpri;       /* User-priority based on p_cpu and p_nice. */
        char    p_nice;         /* Process "nice" value. */
        char    p_comm[MAXCOMLEN+1];
        u_char  p_usrpri;       /* User-priority based on p_cpu and p_nice. */
        char    p_nice;         /* Process "nice" value. */
        char    p_comm[MAXCOMLEN+1];

-       user_addr_t     p_pgrp; /* Pointer to process group. */
+       user_addr_t     p_pgrp __attribute((aligned(8)));       /* Pointer to process group. */

        user_addr_t     p_addr; /* Kernel virtual addr of u-area (PROC ONLY). */
        u_short p_xstat;        /* Exit status for wait; also stop signal. */
        u_short p_acflag;       /* Accounting flags. */
        user_addr_t     p_addr; /* Kernel virtual addr of u-area (PROC ONLY). */
        u_short p_xstat;        /* Exit status for wait; also stop signal. */
        u_short p_acflag;       /* Accounting flags. */

-       user_addr_t     p_ru;   /* Exit information. XXX */
+       user_addr_t     p_ru __attribute((aligned(8))); /* Exit information. XXX */

 };
 };

-
-#if __DARWIN_ALIGN_NATURAL
-#pragma options align=reset
-#endif

 #endif /* KERNEL */
 
 /*
 #endif /* KERNEL */
 
 /*


@@ -325,14 +626,22 @@ struct user_extern_proc {
  * as it is used to represent "no process group".
  */
 extern int nprocs, maxproc;            /* Current and max number of procs. */
  * as it is used to represent "no process group".
  */
 extern int nprocs, maxproc;            /* Current and max number of procs. */

-__private_extern__ int hard_maxproc;   /* hard limit */
+extern int maxprocperuid;              /* Current number of procs per uid */
+extern int hard_maxproc;       /* hard limit */
+extern unsigned int proc_shutdown_exitcount;

 
 

-#define        PID_MAX         30000
-#define        NO_PID          30001
+#define        PID_MAX         99999
+#define        NO_PID          100000
+extern lck_mtx_t * proc_list_mlock;
+extern lck_mtx_t * proc_klist_mlock;

 
 

-#define SESS_LEADER(p) ((p)->p_session->s_leader == (p))
-#define        SESSHOLD(s)     ((s)->s_count++)
-#define        SESSRELE(s)     sessrele(s)
+#define BSD_SIMUL_EXECS                33 /* 32 , allow for rounding */
+#define        BSD_PAGEABLE_SIZE_PER_EXEC      (NCARGS + PAGE_SIZE + PAGE_SIZE) /* page for apple vars, page for executable header */
+extern int execargs_cache_size;
+extern int execargs_free_count;
+extern vm_offset_t * execargs_cache;
+
+#define SESS_LEADER(p, sessp)  ((sessp)->s_leader == (p))

 
 #define        PIDHASH(pid)    (&pidhashtbl[(pid) & pidhash])
 extern LIST_HEAD(pidhashhead, proc) *pidhashtbl;
 
 #define        PIDHASH(pid)    (&pidhashtbl[(pid) & pidhash])
 extern LIST_HEAD(pidhashhead, proc) *pidhashtbl;


@@ -341,28 +650,50 @@ extern u_long pidhash;
 #define        PGRPHASH(pgid)  (&pgrphashtbl[(pgid) & pgrphash])
 extern LIST_HEAD(pgrphashhead, pgrp) *pgrphashtbl;
 extern u_long pgrphash;
 #define        PGRPHASH(pgid)  (&pgrphashtbl[(pgid) & pgrphash])
 extern LIST_HEAD(pgrphashhead, pgrp) *pgrphashtbl;
 extern u_long pgrphash;

+#define        SESSHASH(sessid) (&sesshashtbl[(sessid) & sesshash])
+extern LIST_HEAD(sesshashhead, session) *sesshashtbl;
+extern u_long sesshash;
+

 extern lck_grp_t * proc_lck_grp;
 extern lck_grp_t * proc_lck_grp;

+#if CONFIG_FINE_LOCK_GROUPS
+extern lck_grp_t * proc_mlock_grp;
+extern lck_grp_t * proc_fdmlock_grp;
+extern lck_grp_t * proc_ucred_mlock_grp;
+extern lck_grp_t * proc_slock_grp;
+#endif

 extern lck_grp_attr_t * proc_lck_grp_attr;
 extern lck_attr_t * proc_lck_attr;
 
 LIST_HEAD(proclist, proc);
 extern struct proclist allproc;                /* List of all processes. */
 extern struct proclist zombproc;       /* List of zombie processes. */
 extern lck_grp_attr_t * proc_lck_grp_attr;
 extern lck_attr_t * proc_lck_attr;
 
 LIST_HEAD(proclist, proc);
 extern struct proclist allproc;                /* List of all processes. */
 extern struct proclist zombproc;       /* List of zombie processes. */

+

 extern struct proc *initproc;
 extern struct proc *initproc;

-extern void    pgdelete(struct pgrp *pgrp);
-extern void    sessrele(struct session *sess);

 extern void    procinit(void);
 extern void proc_lock(struct proc *);
 extern void proc_unlock(struct proc *);
 extern void    procinit(void);
 extern void proc_lock(struct proc *);
 extern void proc_unlock(struct proc *);

+extern void proc_spinlock(struct proc *);
+extern void proc_spinunlock(struct proc *);
+extern void proc_list_lock(void);
+extern void proc_list_unlock(void);
+extern void proc_klist_lock(void);
+extern void proc_klist_unlock(void);

 extern void proc_fdlock(struct proc *);
 extern void proc_fdlock(struct proc *);

+extern void proc_fdlock_spin(struct proc *);

 extern void proc_fdunlock(struct proc *);
 extern void proc_fdunlock(struct proc *);

-__private_extern__ char *proc_core_name(const char *name, uid_t uid, pid_t pid);
+extern void proc_fdlock_assert(proc_t p, int assertflags);
+extern void proc_ucred_lock(struct proc *);
+extern void proc_ucred_unlock(struct proc *);
+__private_extern__ int proc_core_name(const char *name, uid_t uid, pid_t pid,
+               char *cr_name, size_t cr_name_len);

 extern int isinferior(struct proc *, struct proc *);
 extern int isinferior(struct proc *, struct proc *);

-extern struct  proc *pfind(pid_t);     /* Find process by id. */

 __private_extern__ struct proc *pzfind(pid_t); /* Find zombie by id. */
 __private_extern__ struct proc *pzfind(pid_t); /* Find zombie by id. */

-extern struct  pgrp *pgfind(pid_t);    /* Find process group by id. */
+__private_extern__ struct proc *proc_find_zombref(pid_t);      /* Find zombie by id. */
+__private_extern__ void proc_drop_zombref(struct proc * p);    /* Find zombie by id. */
+

 
 extern int     chgproccnt(uid_t uid, int diff);
 
 extern int     chgproccnt(uid_t uid, int diff);

+extern void    pinsertchild(struct proc *parent, struct proc *child);

 extern int     enterpgrp(struct proc *p, pid_t pgid, int mksess);
 extern void    fixjobc(struct proc *p, struct pgrp *pgrp, int entering);
 extern int     inferior(struct proc *p);
 extern int     enterpgrp(struct proc *p, pid_t pgid, int mksess);
 extern void    fixjobc(struct proc *p, struct pgrp *pgrp, int entering);
 extern int     inferior(struct proc *p);


@@ -374,10 +705,146 @@ extern int       sleep(void *chan, int pri);
 extern int     tsleep0(void *chan, int pri, const char *wmesg, int timo, int (*continuation)(int));
 extern int     tsleep1(void *chan, int pri, const char *wmesg, u_int64_t abstime, int (*continuation)(int));
 extern int     msleep0(void *chan, lck_mtx_t *mtx, int pri, const char *wmesg, int timo, int (*continuation)(int));
 extern int     tsleep0(void *chan, int pri, const char *wmesg, int timo, int (*continuation)(int));
 extern int     tsleep1(void *chan, int pri, const char *wmesg, u_int64_t abstime, int (*continuation)(int));
 extern int     msleep0(void *chan, lck_mtx_t *mtx, int pri, const char *wmesg, int timo, int (*continuation)(int));

-extern void    vfork_return(thread_t th_act, struct proc *p, struct proc *p2, register_t *retval);
-extern struct proc * proc_findref(pid_t pid);
-extern void  proc_dropref(struct proc *  p);
-extern struct proc * proc_refinternal(proc_t  p, int funneled);
-extern void  proc_dropinternal(struct proc *  p, int funneled);
+extern void    vfork_return(struct proc *child, int32_t *retval, int rval);
+extern int     exit1(struct proc *, int, int *);
+extern int     exit1_internal(struct proc *, int, int *, boolean_t, boolean_t, int);
+extern int     exit_with_reason(struct proc *, int, int *, boolean_t, boolean_t, int, struct os_reason *);
+extern int     fork1(proc_t, thread_t *, int, coalition_t *);
+extern void vfork_exit_internal(struct proc *p, int rv, int forced);
+extern void proc_reparentlocked(struct proc *child, struct proc * newparent, int cansignal, int locked);
+
+extern proc_t proc_findinternal(int pid, int locked);
+extern proc_t proc_findthread(thread_t thread);
+extern void proc_refdrain(proc_t);
+extern proc_t proc_refdrain_with_refwait(proc_t p, boolean_t get_ref_and_allow_wait);
+extern void proc_refwake(proc_t p);
+extern void proc_childdrainlocked(proc_t);
+extern void proc_childdrainstart(proc_t);
+extern void proc_childdrainend(proc_t);
+extern void  proc_checkdeadrefs(proc_t);
+struct proc *pfind_locked(pid_t);
+extern struct pgrp *pgfind(pid_t);
+extern void pg_rele(struct pgrp * pgrp);
+extern struct session * session_find_internal(pid_t sessid);
+extern struct pgrp * proc_pgrp(proc_t);
+extern struct pgrp * tty_pgrp(struct tty * tp);
+extern struct pgrp * pgfind_internal(pid_t);
+extern struct session * proc_session(proc_t);
+extern void pgrp_lock(struct pgrp * pgrp);
+extern void pgrp_unlock(struct pgrp * pgrp);
+extern void session_lock(struct session * sess);
+extern void session_unlock(struct session * sess);
+extern struct session * pgrp_session(struct pgrp * pgrp);
+extern void    session_rele(struct session *sess);
+extern int isbackground(proc_t p, struct tty  *tp);
+extern proc_t proc_parent(proc_t);
+extern proc_t proc_parentholdref(proc_t);
+extern int proc_parentdropref(proc_t, int);
+int     itimerfix(struct timeval *tv);
+int     itimerdecr(struct proc * p, struct itimerval *itp, int usec);
+void    proc_free_realitimer(proc_t proc);
+int  timespec_is_valid(const struct timespec *);
+void proc_signalstart(struct proc *, int locked);
+void proc_signalend(struct proc *, int locked);
+int  proc_transstart(struct proc *, int locked, int non_blocking);
+void proc_transcommit(struct proc *, int locked);
+void proc_transend(struct proc *, int locked);
+int  proc_transwait(struct proc *, int locked);
+void  proc_rele_locked(struct proc *  p);
+struct proc *proc_ref_locked(struct proc *  p);
+void proc_knote(struct proc * p, long hint);
+void proc_knote_drain(struct proc *p);
+void proc_setregister(proc_t p);
+void proc_resetregister(proc_t p);
+/* returns the first thread_t in the process, or NULL XXX for NFS, DO NOT USE */
+thread_t proc_thread(proc_t);
+extern int proc_pendingsignals(proc_t, sigset_t);
+int proc_getpcontrol(int pid, int * pcontrolp);
+int proc_dopcontrol(proc_t p);
+int proc_resetpcontrol(int pid);
+#if PSYNCH
+void pth_proc_hashinit(proc_t);
+void pth_proc_hashdelete(proc_t);
+void pth_global_hashinit(void);
+extern thread_call_t psynch_thcall;
+void psynch_wq_cleanup(__unused void *  param, __unused void * param1);
+extern lck_mtx_t * pthread_list_mlock;
+#endif /* PSYNCH */
+struct uthread * current_uthread(void);
+
+/* process iteration */
+
+#define ALLPROC_FOREACH(var) \
+       LIST_FOREACH((var), &allproc, p_list)
+
+#define ZOMBPROC_FOREACH(var) \
+       LIST_FOREACH((var), &zombproc, p_list)
+
+#define PGMEMBERS_FOREACH(group, var) \
+       LIST_FOREACH((var), &((struct pgrp *)(group))->pg_members, p_pglist)
+
+#define PCHILDREN_FOREACH(parent, var) \
+       LIST_FOREACH((var), &(((struct proc *)(parent))->p_children), p_sibling)
+
+typedef int (*proc_iterate_fn_t)(proc_t, void *);
+
+/*
+ * These are the only valid return values of `callout` functions provided to
+ * process iterators.
+ *
+ * CLAIMED returns expect the caller to call proc_rele on the proc.  DONE
+ * returns stop iterating processes early.
+ */
+#define PROC_RETURNED      (0)
+#define PROC_RETURNED_DONE (1)
+#define PROC_CLAIMED       (2)
+#define PROC_CLAIMED_DONE  (3)
+
+/*
+ * pgrp_iterate walks the provided process group, calling `filterfn` with
+ * `filterarg` for each process.  For processes where `filterfn` returned
+ * non-zero, `callout` is called with `arg`.  If `PGRP_DROPREF` is supplied in
+ * `flags`, a reference will be dropped from the process group after obtaining
+ * the list of processes to call `callout` on.
+ *
+ * `PGMEMBERS_FOREACH` might also be used under the pgrp_lock to achieve a
+ * similar effect.
+ */
+#define PGRP_DROPREF (1)
+
+extern int pgrp_iterate(struct pgrp *pgrp, unsigned int flags, proc_iterate_fn_t callout, void *arg, proc_iterate_fn_t filterfn, void *filterarg);
+
+/*
+ * proc_iterate walks the `allproc` and/or `zombproc` lists, calling `filterfn`
+ * with `filterarg` for each process.  For processes where `filterfn` returned
+ * non-zero, `callout` is called with `arg`.  If the `PROC_NOWAITTRANS` flag is
+ * set, this function waits for transitions.
+ *
+ * `ALLPROC_FOREACH` or `ZOMBPROC_FOREACH` might also be used under the
+ * `proc_list_lock` to achieve a similar effect.
+ */
+#define PROC_ALLPROCLIST  (1U << 0) /* walk the allproc list (processes not yet exited) */
+#define PROC_ZOMBPROCLIST (1U << 1) /* walk the zombie list */
+#define PROC_NOWAITTRANS  (1U << 2) /* do not wait for transitions (checkdirs only) */
+
+extern int proc_iterate(unsigned int flags, proc_iterate_fn_t callout, void *arg, proc_iterate_fn_t filterfn, void *filterarg);
+
+/*
+ * proc_childrenwalk walks the children of process `p`, calling `callout` for
+ * each one.
+ *
+ * `PCHILDREN_FOREACH` might also be used under the `proc_list_lock` to achieve
+ * a similar effect.
+ */
+extern int proc_childrenwalk(proc_t p, proc_iterate_fn_t callout, void *arg);
+
+/*
+ * proc_rebootscan should only be used by kern_shutdown.c
+ */
+extern void proc_rebootscan(proc_iterate_fn_t callout, void *arg, proc_iterate_fn_t filterfn, void *filterarg);
+
+pid_t dtrace_proc_selfpid(void);
+pid_t dtrace_proc_selfppid(void);
+uid_t dtrace_proc_selfruid(void);

 
 #endif /* !_SYS_PROC_INTERNAL_H_ */
 
 #endif /* !_SYS_PROC_INTERNAL_H_ */