xnu-1228.12.14.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 0583fab8cba81e6db59bfc6ba7cca51d275246df..280e812b1e59b72c43aa08067955743ebd98ee2e 100644 (file)
--- a/bsd/sys/proc_internal.h
+++ b/bsd/sys/proc_internal.h
@@ -1,5 +1,5 @@
 /*
 /*

- * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2007 Apple Inc. All rights reserved.

  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 


@@ -65,45 +65,110 @@
  *
  *     @(#)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>
 __BEGIN_DECLS
 #include <kern/locks.h>
 __END_DECLS
 
 #include <sys/proc.h>
 __BEGIN_DECLS
 #include <kern/locks.h>
 __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
+ * PSL = Process Spin Lock
+ * PPL = Parent Process Lock (planed for later usage)
+ * LL = List Lock
+ * SL = Session Lock
+*/
+struct label;
+
+/*
+ * Added by SPARTA, Inc.
+ */
+/*
+ * Login context.
+ */
+struct lctx {
+       LIST_ENTRY(lctx) lc_list;       /* List of all login contexts. */
+       LIST_HEAD(, proc) lc_members;   /* Pointer to lc members. */
+       int             lc_mc;          /* Member Count. */
+       pid_t           lc_id;          /* Login context ID. */
+       lck_mtx_t       lc_mtx;         /* Mutex to protect members */
+
+       struct label    *lc_label;      /* Login context MAC 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) */
+       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
+
+/*
+ * 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_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
-

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


@@ -116,122 +181,158 @@ 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. */

 
 

-       /* 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). */
+       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)*/

 
 

-#define        p_rlimit        p_limit->pl_rlimit
+       lck_mtx_t       p_mlock;                /* mutex lock for proc */

 
 

-       int     p_flag;                 /* P_* flags. */
-       char    p_stat;                 /* S* process status. */
-       char    p_shutdownstate;
-       char    p_pad1[2];
+       char            p_stat;                 /* S* process status. (PL)*/
+       char            p_shutdownstate;
+       char            p_kdebug;               /* P_KDEBUG eq (CC)*/ 
+       char            p_btrace;               /* P_BTRACE eq (CC)*/

 
 

-       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. */
+       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) */

 
 

-/* The following fields are all zeroed upon creation in fork. */
-#define        p_startzero     p_oppid
+       LIST_ENTRY(proc) p_hash;                /* Hash chain. (LL)*/
+       TAILQ_HEAD( ,eventqelt) p_evlist;       /* (PL) */

 
 

-       pid_t   p_oppid;         /* Save parent pid during ptrace. XXX */
-       int     p_dupfd;         /* Sideways return value from fdopen. XXX */
+       lck_mtx_t       p_fdmlock;              /* proc lock to protect fdesc */

 
 

-       /* 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. */
+       /* substructures: */
+       kauth_cred_t    p_ucred;                /* Process owner's identity. (PL) */
+       struct  filedesc *p_fd;                 /* Ptr to open files structure. (PFDL) */
+       struct  pstats *p_stats;                /* Accounting/statistics (PL). */
+       struct  plimit *p_limit;                /* Process limits.(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. */
+       struct  sigacts *p_sigacts;             /* Signal actions, state (PL) */
+       lck_spin_t      p_slock;                /* spin lock for itimer/profil protection */

 
 

-       int     p_traceflag;            /* Kernel trace points. */
-       struct  vnode *p_tracep;        /* Trace to vnode. */
+#define        p_rlimit        p_limit->pl_rlimit

 
 

-       sigset_t p_siglist;             /* DEPRECATED. */
+       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 */
+       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

 
 

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

+       off_t   p_textoff;              /* offset in executable vnode */

 
 

-/* End area that is zeroed on creation. */
-#define        p_endzero       p_hash.le_next
-
-       /*
-        * Not copied, not zero'ed.
-        * Belongs after p_pid, but here to avoid shifting proc elements.
-        */
-       LIST_ENTRY(proc) p_hash;        /* Hash chain. */
-       TAILQ_HEAD( ,eventqelt) p_evlist;
+       sigset_t p_sigmask;             /* DEPRECATED */
+       sigset_t p_sigignore;   /* Signals being ignored. (PL) */
+       sigset_t p_sigcatch;    /* Signals being caught by user.(PL)  */

 
 

-/* The following fields are all copied upon creation in fork. */
-#define        p_startcopy     p_sigmask
+       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. */

 
 

-       sigset_t p_sigmask;             /* DEPRECATED */
-       sigset_t p_sigignore;   /* Signals being ignored. */
-       sigset_t p_sigcatch;    /* Signals being caught by user. */
+#if CONFIG_MACF
+       int     p_mac_enforce;                  /* MAC policy enforcement control */
+#endif

 
 

-       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];
        char    p_comm[MAXCOMLEN+1];

+       char    p_name[(2*MAXCOMLEN)+1];        /* PL */

 
 

-       struct  pgrp *p_pgrp;   /* Pointer to process group. */
+       struct  pgrp *p_pgrp;   /* Pointer to process group. (LL) */
+       int             p_iopol_disk;   /* disk I/O policy (PL) */
+       uint32_t        p_csflags;      /* flags for codesign (PL) */

 
 /* End area that is copied on creation. */
 
 /* End area that is copied on creation. */

-#define        p_endcopy       p_xstat
-       
-       u_short p_xstat;        /* Exit status for wait; also stop signal. */
-       u_short p_acflag;       /* Accounting flags. */
-       struct  rusage *p_ru;   /* Exit information. XXX */
-
-       int     p_debugger;     /* 1: can exec set-bit programs if suser */
-
-       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 */
+/* XXXXXXXXXXXXX End of BCOPY'ed on fork (AIOLOCK)XXXXXXXXXXXXXXXX */
+#define        p_endcopy       aio_active_count

        int             aio_active_count;       /* entries on aio_activeq */
        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 */
        int             aio_done_count;         /* entries on aio_doneq */

+       TAILQ_HEAD( , aio_workq_entry ) aio_activeq; /* active async IO requests */
+       TAILQ_HEAD( , aio_workq_entry ) aio_doneq;       /* completed async IO requests */
+
+       struct klist p_klist;  /* knote list (PL ?)*/
+
+       struct  rusage *p_ru;   /* Exit information. (PL) */
+       thread_t        p_signalholder;
+       thread_t        p_transholder;
+
+       /* DEPRECATE following field  */
+       u_short p_acflag;       /* Accounting flags. */

 
 

-       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 */
+       struct lctx *p_lctx;            /* Pointer to login context. */
+       LIST_ENTRY(proc) p_lclist;      /* List of processes in lctx. */
+       user_addr_t     p_threadstart;          /* pthread start fn */
+       user_addr_t     p_wqthread;             /* pthread workqueue fn */
+       int     p_pthsize;                      /* pthread size */
+       void *  p_wqptr;                        /* workq ptr */
+       int     p_wqsize;                       /* allocated size */
+       lck_mtx_t       p_wqlock;               /* lock to protect work queue */
+       struct  timeval p_start;                /* starting time */
+       void *  p_rcall;
+       int             p_ractive;
+       int     p_idversion;            /* version of process identity */
+#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];
 #if SIGNAL_DEBUG
        unsigned int lockpc[8];
        unsigned int unlockpc[8];


@@ -239,22 +340,73 @@ struct    proc {
 #endif /* DIAGNOSTIC */
 };
 
 #endif /* DIAGNOSTIC */
 };
 

+#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 */
+ 

 
 /* 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
+#define        P_LDELAYTERM    0x00000001      /* */
+#define        P_LNOZOMB       0x00000002      /* */
+#define P_LTERM                0x00000004      /* */ 
+#define P_LEXIT                0x00000008      /* */
+#define P_LPEXIT       0x00000010
+#define        P_LTHSIGSTACK   0x00000020
+#define        P_LINTRANSIT    0x00000040      /* process in exec or in creation */
+#define        P_LTRANSWAIT    0x00000080      /* waiting for trans to complete */
+#define P_LVFORK        0x00000100      /* */
+#define P_LINVFORK      0x00000200      /* */
+#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_LSIGNALWAIT          0x00200000 
+#define P_LRAGE_VNODES 0x00400000

 
 /* advisory flags in the proc */
 #define P_LADVLOCK             0x01
 
 
 /* advisory flags in the proc */
 #define P_LADVLOCK             0x01
 

-// LP64todo - should this move?
+/* defns for proc_iterate */
+#define PROC_ALLPROCLIST        1              /* walk the allproc list (procs not exited yet) */
+#define PROC_ZOMBPROCLIST       2              /*  walk the zombie list */
+#define PROC_NOWAITTRANS       4               /* do not wait for transitions (checkdirs only)  */
+ 
+/* defns for pgrp_iterate */ 
+#define PGRP_DROPREF           1
+#define        PGRP_BLOCKITERATE       2
+ 
+/* return values of the proc iteration callback routine */ 
+#define PROC_RETURNED           0
+#define PROC_RETURNED_DONE      1
+#define PROC_CLAIMED            2
+#define PROC_CLAIMED_DONE       3
+
+

 /* 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


@@ -264,10 +416,6 @@ 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 {
        union {
                struct {
 struct user_extern_proc {
        union {
                struct {


@@ -284,7 +432,7 @@ 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 */


@@ -292,7 +440,7 @@ 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. */


@@ -302,9 +450,9 @@ struct user_extern_proc {
        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_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. */


@@ -313,16 +461,12 @@ 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 */
 
 /*


@@ -330,14 +474,27 @@ 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. */

+extern int maxprocperuid;              /* Current number of procs per uid */

 __private_extern__ int hard_maxproc;   /* hard limit */
 
 __private_extern__ int hard_maxproc;   /* hard limit */
 

-#define        PID_MAX         30000
-#define        NO_PID          30001
-
-#define SESS_LEADER(p) ((p)->p_session->s_leader == (p))
-#define        SESSHOLD(s)     ((s)->s_count++)
-#define        SESSRELE(s)     sessrele(s)
+#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, sessp)  ((sessp)->s_leader == (p))
+
+/* Lock and unlock a login context. */
+#define LCTX_LOCK(lc)  lck_mtx_lock(&(lc)->lc_mtx)
+#define LCTX_UNLOCK(lc)        lck_mtx_unlock(&(lc)->lc_mtx)
+#define LCTX_LOCKED(lc)
+#define LCTX_LOCK_ASSERT(lc, type)
+#define ALLLCTX_LOCK   lck_mtx_lock(&alllctx_lock)
+#define ALLLCTX_UNLOCK lck_mtx_unlock(&alllctx_lock)
+extern lck_mtx_t alllctx_lock;
+extern lck_grp_t * lctx_lck_grp;
+extern lck_grp_attr_t * lctx_lck_grp_attr;
+extern lck_attr_t * lctx_lck_attr;

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


@@ -346,6 +503,10 @@ 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_attr_t * proc_lck_grp_attr;
 extern lck_attr_t * proc_lck_attr;
 extern lck_grp_t * proc_lck_grp;
 extern lck_grp_attr_t * proc_lck_grp_attr;
 extern lck_attr_t * proc_lck_attr;


@@ -354,24 +515,35 @@ 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 proclist allproc;                /* List of all processes. */
 extern struct proclist zombproc;       /* List of zombie processes. */
 extern struct proc *initproc;

-extern void    pgdelete(struct pgrp *pgrp);
-extern void    sessrele(struct session *sess);
-extern void    procinit(void);
+extern void    procinit(void) __attribute__((section("__TEXT, initcode")));

 extern void proc_lock(struct proc *);
 extern void proc_unlock(struct proc *);
 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);
+__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. */
+
+extern struct  lctx *lcfind(pid_t);            /* Find a login context by id */
+extern struct  lctx *lccreate(void);           /* Create a new login context */

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

+extern void    enterlctx(struct proc *p, struct lctx *l, int create);
+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     leavepgrp(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);
 extern int     leavepgrp(struct proc *p);

+extern void    leavelctx(struct proc *p);

 extern void    resetpriority(struct proc *);
 extern void    setrunnable(struct proc *);
 extern void    setrunqueue(struct proc *);
 extern void    resetpriority(struct proc *);
 extern void    setrunnable(struct proc *);
 extern void    setrunqueue(struct proc *);


@@ -379,10 +551,47 @@ 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, register_t *retval, int rval);
+extern int     exit1(struct proc *, int, int *);
+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 int pgrp_iterate(struct pgrp * pgrp, int flags, int (*callout)(proc_t , void *), void *arg, int (*filterfn)(proc_t , void *), void *filterarg);
+extern int proc_iterate(int flags, int (*callout)(proc_t , void *), void *arg, int (*filterfn)(proc_t , void *), void *filterarg);
+extern int proc_rebootscan(int (*callout)(proc_t , void *), void *arg, int (*filterfn)(proc_t , void *), void *filterarg);
+extern int proc_childrenwalk(proc_t p, int (*callout)(proc_t , void *), void *arg);
+extern proc_t proc_findinternal(int pid, int funneled);
+extern void proc_refdrain(proc_t);
+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_signalstart(struct proc *, int locked);
+void proc_signalend(struct proc *, int locked);
+void proc_transstart(struct proc *, int locked);
+void proc_transend(struct proc *, int locked);
+void proc_transwait(struct proc *, int locked);
+void  proc_rele_locked(struct proc *  p);
+void proc_knote(struct proc * p, long hint);
+void workqueue_init_lock(proc_t p);
+void workqueue_destroy_lock(proc_t p);

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