FreeBSD/Linux Kernel Cross Reference
sys/cddl/dev/dtrace/dtrace_cddl.h

     /*
      * CDDL HEADER START
      *
      * The contents of this file are subject to the terms of the
      * Common Development and Distribution License (the "License").
      * You may not use this file except in compliance with the License.
      *
      * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      * or http://www.opensolaris.org/os/licensing.
     * See the License for the specific language governing permissions
     * and limitations under the License.
     *
     * When distributing Covered Code, include this CDDL HEADER in each
     * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     * If applicable, add the following below this CDDL HEADER, with the
     * fields enclosed by brackets "[]" replaced with your own identifying
     * information: Portions Copyright [yyyy] [name of copyright owner]
     *
     * CDDL HEADER END
     *
     * $FreeBSD$
     *
     */
    
    #ifndef _DTRACE_CDDL_H_
    #define _DTRACE_CDDL_H_
    
    #include <sys/proc.h>
    
    #define LOCK_LEVEL      10
    
    /*
     * Kernel DTrace extension to 'struct proc' for FreeBSD.
     */
    typedef struct kdtrace_proc {
            int             p_dtrace_probes;        /* Are there probes for this proc? */
            uint64_t        p_dtrace_count;         /* Number of DTrace tracepoints */
            void            *p_dtrace_helpers;      /* DTrace helpers, if any */
            int             p_dtrace_model;
            uint64_t        p_fasttrap_tp_gen;      /* Tracepoint hash table gen */
    } kdtrace_proc_t;
    
    /*
     * Kernel DTrace extension to 'struct thread' for FreeBSD.
     */
    typedef struct kdtrace_thread {
            uint8_t         td_dtrace_stop; /* Indicates a DTrace-desired stop */
            uint8_t         td_dtrace_sig;  /* Signal sent via DTrace's raise() */
            uint8_t         td_dtrace_inprobe; /* Are we in a probe? */
            u_int           td_predcache;   /* DTrace predicate cache */
            uint64_t        td_dtrace_vtime; /* DTrace virtual time */
            uint64_t        td_dtrace_start; /* DTrace slice start time */
    
            union __tdu {
                    struct __tds {
                            uint8_t         _td_dtrace_on;
                                            /* Hit a fasttrap tracepoint. */
                            uint8_t         _td_dtrace_step;
                                            /* About to return to kernel. */
                            uint8_t         _td_dtrace_ret;
                                            /* Handling a return probe. */
                            uint8_t         _td_dtrace_ast;
                                            /* Saved ast flag. */
    #ifdef __amd64__
                            uint8_t         _td_dtrace_reg;
    #endif
                    } _tds;
                    u_long  _td_dtrace_ft;  /* Bitwise or of these flags. */
            } _tdu;
    #define td_dtrace_ft    _tdu._td_dtrace_ft
    #define td_dtrace_on    _tdu._tds._td_dtrace_on
    #define td_dtrace_step  _tdu._tds._td_dtrace_step
    #define td_dtrace_ret   _tdu._tds._td_dtrace_ret
    #define td_dtrace_ast   _tdu._tds._td_dtrace_ast
    #define td_dtrace_reg   _tdu._tds._td_dtrace_reg
    
            uintptr_t       td_dtrace_pc;   /* DTrace saved pc from fasttrap. */
            uintptr_t       td_dtrace_npc;  /* DTrace next pc from fasttrap. */
            uintptr_t       td_dtrace_scrpc;
                                            /* DTrace per-thread scratch location. */
            uintptr_t       td_dtrace_astpc;
                                            /* DTrace return sequence location. */
    #ifdef __amd64__
            uintptr_t       td_dtrace_regv;
    #endif
            uint64_t        td_hrtime;      /* Last time on cpu. */
            void            *td_dtrace_sscr; /* Saved scratch space location. */
            void            *td_systrace_args; /* syscall probe arguments. */
            uint64_t        td_fasttrap_tp_gen; /* Tracepoint hash table gen. */
            struct trapframe *td_dtrace_trapframe; /* Trap frame from invop. */
            void            *td_kinst;
    } kdtrace_thread_t;
    
    /*
     * Definitions to reference fields in the FreeBSD DTrace structures defined
     * above using the names of fields in similar structures in Solaris. Note 
     * that the separation on FreeBSD is a licensing constraint designed to
     * keep the GENERIC kernel BSD licensed.
     */
   #define t_dtrace_vtime  td_dtrace->td_dtrace_vtime
   #define t_dtrace_start  td_dtrace->td_dtrace_start
   #define t_dtrace_stop   td_dtrace->td_dtrace_stop
   #define t_dtrace_sig    td_dtrace->td_dtrace_sig
   #define t_dtrace_inprobe        td_dtrace->td_dtrace_inprobe
   #define t_predcache     td_dtrace->td_predcache
   #define t_dtrace_ft     td_dtrace->td_dtrace_ft
   #define t_dtrace_on     td_dtrace->td_dtrace_on
   #define t_dtrace_step   td_dtrace->td_dtrace_step
   #define t_dtrace_ret    td_dtrace->td_dtrace_ret
   #define t_dtrace_ast    td_dtrace->td_dtrace_ast
   #define t_dtrace_reg    td_dtrace->td_dtrace_reg
   #define t_dtrace_pc     td_dtrace->td_dtrace_pc
   #define t_dtrace_npc    td_dtrace->td_dtrace_npc
   #define t_dtrace_scrpc  td_dtrace->td_dtrace_scrpc
   #define t_dtrace_astpc  td_dtrace->td_dtrace_astpc
   #define t_dtrace_regv   td_dtrace->td_dtrace_regv
   #define t_dtrace_sscr   td_dtrace->td_dtrace_sscr
   #define t_dtrace_systrace_args  td_dtrace->td_systrace_args
   #define t_fasttrap_tp_gen       td_dtrace->td_fasttrap_tp_gen
   #define t_dtrace_trapframe      td_dtrace->td_dtrace_trapframe
   #define t_kinst         td_dtrace->td_kinst
   #define p_dtrace_helpers        p_dtrace->p_dtrace_helpers
   #define p_dtrace_count  p_dtrace->p_dtrace_count
   #define p_dtrace_probes p_dtrace->p_dtrace_probes
   #define p_model         p_dtrace->p_dtrace_model
   #define p_fasttrap_tp_gen       p_dtrace->p_fasttrap_tp_gen
   
   #define DATAMODEL_NATIVE        0
   #ifdef __amd64__
   #define DATAMODEL_LP64          0
   #define DATAMODEL_ILP32         1
   #else
   #define DATAMODEL_LP64          1
   #define DATAMODEL_ILP32         0
   #endif
   
   /*
    * Definitions for fields in struct proc which are named differently in FreeBSD.
    */
   #define p_cred          p_ucred
   #define p_parent        p_pptr
   
   /*
    * Definitions for fields in struct thread which are named differently in FreeBSD.
    */
   #define t_procp         td_proc
   #define t_tid           td_tid
   #define t_did           td_tid
   #define t_cred          td_ucred
   
   
   int priv_policy(const cred_t *, int, boolean_t, int, const char *);
   boolean_t priv_policy_only(const cred_t *, int, boolean_t);
   boolean_t priv_policy_choice(const cred_t *, int, boolean_t);
   
   /*
    * Test privilege. Audit success or failure, allow privilege debugging.
    * Returns 0 for success, err for failure.
    */
   #define PRIV_POLICY(cred, priv, all, err, reason) \
                   priv_policy((cred), (priv), (all), (err), (reason))
   
   /*
    * Test privilege. Audit success only, no privilege debugging.
    * Returns 1 for success, and 0 for failure.
    */
   #define PRIV_POLICY_CHOICE(cred, priv, all) \
                   priv_policy_choice((cred), (priv), (all))
   
   /*
    * Test privilege. No priv_debugging, no auditing.
    * Returns 1 for success, and 0 for failure.
    */
   
   #define PRIV_POLICY_ONLY(cred, priv, all) \
                   priv_policy_only((cred), (priv), (all))
   
   #endif  /* !_DTRACE_CDDL_H_ */

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