2642 lines
115 KiB
C
2642 lines
115 KiB
C
/*
|
|
* 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
|
|
*/
|
|
|
|
/*
|
|
* Portions copyright (c) 2013, Joyent, Inc. All rights reserved.
|
|
* Portions Copyright (c) 2013 by Delphix. All rights reserved.
|
|
*/
|
|
|
|
/*
|
|
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
|
|
* Use is subject to license terms.
|
|
*
|
|
* Portions Copyright (c) 2012 by Delphix. All rights reserved.
|
|
*/
|
|
|
|
#ifndef _SYS_DTRACE_H
|
|
#define _SYS_DTRACE_H
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/*
|
|
* DTrace Dynamic Tracing Software: Kernel Interfaces
|
|
*
|
|
* Note: The contents of this file are private to the implementation of the
|
|
* Solaris system and DTrace subsystem and are subject to change at any time
|
|
* without notice. Applications and drivers using these interfaces will fail
|
|
* to run on future releases. These interfaces should not be used for any
|
|
* purpose except those expressly outlined in dtrace(7D) and libdtrace(3LIB).
|
|
* Please refer to the "Solaris Dynamic Tracing Guide" for more information.
|
|
*/
|
|
|
|
#ifndef _ASM
|
|
|
|
#if !defined(__APPLE__)
|
|
#include <sys/types.h>
|
|
#include <sys/modctl.h>
|
|
#include <sys/processor.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/ctf_api.h>
|
|
#include <sys/cyclic.h>
|
|
#include <sys/int_limits.h>
|
|
#else /* is Apple Mac OS X */
|
|
|
|
#if defined(__LP64__)
|
|
#if !defined(_LP64)
|
|
#define _LP64 /* Solaris vs. Darwin */
|
|
#endif
|
|
#else
|
|
#if !defined(_ILP32)
|
|
#define _ILP32 /* Solaris vs. Darwin */
|
|
#endif
|
|
#endif
|
|
|
|
#if defined(__BIG_ENDIAN__)
|
|
#if !defined(_BIG_ENDIAN)
|
|
#define _BIG_ENDIAN /* Solaris vs. Darwin */
|
|
#endif
|
|
#elif defined(__LITTLE_ENDIAN__)
|
|
#if !defined(_LITTLE_ENDIAN)
|
|
#define _LITTLE_ENDIAN /* Solaris vs. Darwin */
|
|
#endif
|
|
#else
|
|
#error Unknown endian-ness
|
|
#endif
|
|
|
|
#ifdef KERNEL
|
|
#ifndef _KERNEL
|
|
#define _KERNEL /* Solaris vs. Darwin */
|
|
#endif
|
|
#endif
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <stdint.h>
|
|
|
|
#ifndef NULL
|
|
#define NULL ((void *)0) /* quiets many warnings */
|
|
#endif
|
|
|
|
#define SEC 1
|
|
#define MILLISEC 1000
|
|
#define MICROSEC 1000000
|
|
#define NANOSEC 1000000000
|
|
|
|
#define S_ROUND(x, a) ((x) + (((a) ? (a) : 1) - 1) & ~(((a) ? (a) : 1) - 1))
|
|
#define P2ROUNDUP(x, align) (-(-(x) & -(align)))
|
|
#define P2PHASEUP(x, align, phase) ((phase) - (((phase) - (x)) & -(align)))
|
|
|
|
#define CTF_MODEL_ILP32 1 /* object data model is ILP32 */
|
|
#define CTF_MODEL_LP64 2 /* object data model is LP64 */
|
|
#ifdef __LP64__
|
|
#define CTF_MODEL_NATIVE CTF_MODEL_LP64
|
|
#else
|
|
#define CTF_MODEL_NATIVE CTF_MODEL_ILP32
|
|
#endif
|
|
|
|
typedef uint8_t uchar_t;
|
|
typedef uint16_t ushort_t;
|
|
typedef uint32_t uint_t;
|
|
typedef unsigned long ulong_t;
|
|
typedef uint64_t u_longlong_t;
|
|
typedef int64_t longlong_t;
|
|
typedef int64_t off64_t;
|
|
typedef int processorid_t;
|
|
typedef int64_t hrtime_t;
|
|
|
|
typedef enum { B_FALSE = 0, B_TRUE = 1 } _dtrace_boolean;
|
|
|
|
typedef uint8_t UUID[16]; /* For modctl use in dtrace.h */
|
|
|
|
struct modctl; /* In lieu of Solaris <sys/modctl.h> */
|
|
/* NOTHING */ /* In lieu of Solaris <sys/processor.h> */
|
|
#include <sys/ioctl.h> /* In lieu of Solaris <sys/systm.h> */
|
|
#ifdef KERNEL
|
|
/* NOTHING */ /* In lieu of Solaris <sys/ctf_api.h> */
|
|
#else
|
|
/* In lieu of Solaris <sys/ctf_api.h> */
|
|
typedef struct ctf_file ctf_file_t;
|
|
typedef long ctf_id_t;
|
|
#endif
|
|
/* NOTHING */ /* In lieu of Solaris <sys/cyclic.h> */
|
|
/* NOTHING */ /* In lieu of Solaris <sys/int_limits.h> */
|
|
|
|
typedef uint32_t zoneid_t;
|
|
|
|
#include <sys/dtrace_glue.h>
|
|
|
|
#include <stdarg.h>
|
|
typedef va_list __va_list;
|
|
|
|
/* Solaris proc_t is the struct. Darwin's proc_t is a pointer to it. */
|
|
#define proc_t struct proc /* Steer clear of the Darwin typedef for proc_t */
|
|
|
|
#include <os/overflow.h>
|
|
#endif /* __APPLE__ */
|
|
|
|
/*
|
|
* DTrace Universal Constants and Typedefs
|
|
*/
|
|
#define DTRACE_CPUALL -1 /* all CPUs */
|
|
#define DTRACE_IDNONE 0 /* invalid probe identifier */
|
|
#define DTRACE_EPIDNONE 0 /* invalid enabled probe identifier */
|
|
#define DTRACE_AGGIDNONE 0 /* invalid aggregation identifier */
|
|
#define DTRACE_AGGVARIDNONE 0 /* invalid aggregation variable ID */
|
|
#define DTRACE_CACHEIDNONE 0 /* invalid predicate cache */
|
|
#define DTRACE_PROVNONE 0 /* invalid provider identifier */
|
|
#define DTRACE_METAPROVNONE 0 /* invalid meta-provider identifier */
|
|
#define DTRACE_ARGNONE -1 /* invalid argument index */
|
|
|
|
#define DTRACE_PROVNAMELEN 64
|
|
#define DTRACE_MODNAMELEN 64
|
|
#define DTRACE_FUNCNAMELEN 128
|
|
#define DTRACE_NAMELEN 64
|
|
#define DTRACE_FULLNAMELEN (DTRACE_PROVNAMELEN + DTRACE_MODNAMELEN + \
|
|
DTRACE_FUNCNAMELEN + DTRACE_NAMELEN + 4)
|
|
#define DTRACE_ARGTYPELEN 128
|
|
|
|
typedef uint32_t dtrace_id_t; /* probe identifier */
|
|
typedef uint32_t dtrace_epid_t; /* enabled probe identifier */
|
|
typedef uint32_t dtrace_aggid_t; /* aggregation identifier */
|
|
typedef int64_t dtrace_aggvarid_t; /* aggregation variable identifier */
|
|
typedef uint16_t dtrace_actkind_t; /* action kind */
|
|
typedef int64_t dtrace_optval_t; /* option value */
|
|
typedef uint32_t dtrace_cacheid_t; /* predicate cache identifier */
|
|
|
|
typedef enum dtrace_probespec {
|
|
DTRACE_PROBESPEC_NONE = -1,
|
|
DTRACE_PROBESPEC_PROVIDER = 0,
|
|
DTRACE_PROBESPEC_MOD,
|
|
DTRACE_PROBESPEC_FUNC,
|
|
DTRACE_PROBESPEC_NAME
|
|
} dtrace_probespec_t;
|
|
|
|
/*
|
|
* DTrace Intermediate Format (DIF)
|
|
*
|
|
* The following definitions describe the DTrace Intermediate Format (DIF), a
|
|
* a RISC-like instruction set and program encoding used to represent
|
|
* predicates and actions that can be bound to DTrace probes. The constants
|
|
* below defining the number of available registers are suggested minimums; the
|
|
* compiler should use DTRACEIOC_CONF to dynamically obtain the number of
|
|
* registers provided by the current DTrace implementation.
|
|
*/
|
|
#define DIF_VERSION_1 1 /* DIF version 1: Solaris 10 Beta */
|
|
#define DIF_VERSION_2 2 /* DIF version 2: Solaris 10 FCS */
|
|
#define DIF_VERSION DIF_VERSION_2 /* latest DIF instruction set version */
|
|
#define DIF_DIR_NREGS 8 /* number of DIF integer registers */
|
|
#define DIF_DTR_NREGS 8 /* number of DIF tuple registers */
|
|
|
|
#define DIF_OP_OR 1 /* or r1, r2, rd */
|
|
#define DIF_OP_XOR 2 /* xor r1, r2, rd */
|
|
#define DIF_OP_AND 3 /* and r1, r2, rd */
|
|
#define DIF_OP_SLL 4 /* sll r1, r2, rd */
|
|
#define DIF_OP_SRL 5 /* srl r1, r2, rd */
|
|
#define DIF_OP_SUB 6 /* sub r1, r2, rd */
|
|
#define DIF_OP_ADD 7 /* add r1, r2, rd */
|
|
#define DIF_OP_MUL 8 /* mul r1, r2, rd */
|
|
#define DIF_OP_SDIV 9 /* sdiv r1, r2, rd */
|
|
#define DIF_OP_UDIV 10 /* udiv r1, r2, rd */
|
|
#define DIF_OP_SREM 11 /* srem r1, r2, rd */
|
|
#define DIF_OP_UREM 12 /* urem r1, r2, rd */
|
|
#define DIF_OP_NOT 13 /* not r1, rd */
|
|
#define DIF_OP_MOV 14 /* mov r1, rd */
|
|
#define DIF_OP_CMP 15 /* cmp r1, r2 */
|
|
#define DIF_OP_TST 16 /* tst r1 */
|
|
#define DIF_OP_BA 17 /* ba label */
|
|
#define DIF_OP_BE 18 /* be label */
|
|
#define DIF_OP_BNE 19 /* bne label */
|
|
#define DIF_OP_BG 20 /* bg label */
|
|
#define DIF_OP_BGU 21 /* bgu label */
|
|
#define DIF_OP_BGE 22 /* bge label */
|
|
#define DIF_OP_BGEU 23 /* bgeu label */
|
|
#define DIF_OP_BL 24 /* bl label */
|
|
#define DIF_OP_BLU 25 /* blu label */
|
|
#define DIF_OP_BLE 26 /* ble label */
|
|
#define DIF_OP_BLEU 27 /* bleu label */
|
|
#define DIF_OP_LDSB 28 /* ldsb [r1], rd */
|
|
#define DIF_OP_LDSH 29 /* ldsh [r1], rd */
|
|
#define DIF_OP_LDSW 30 /* ldsw [r1], rd */
|
|
#define DIF_OP_LDUB 31 /* ldub [r1], rd */
|
|
#define DIF_OP_LDUH 32 /* lduh [r1], rd */
|
|
#define DIF_OP_LDUW 33 /* lduw [r1], rd */
|
|
#define DIF_OP_LDX 34 /* ldx [r1], rd */
|
|
#define DIF_OP_RET 35 /* ret rd */
|
|
#define DIF_OP_NOP 36 /* nop */
|
|
#define DIF_OP_SETX 37 /* setx intindex, rd */
|
|
#define DIF_OP_SETS 38 /* sets strindex, rd */
|
|
#define DIF_OP_SCMP 39 /* scmp r1, r2 */
|
|
#define DIF_OP_LDGA 40 /* ldga var, ri, rd */
|
|
#define DIF_OP_LDGS 41 /* ldgs var, rd */
|
|
#define DIF_OP_STGS 42 /* stgs var, rs */
|
|
#define DIF_OP_LDTA 43 /* ldta var, ri, rd */
|
|
#define DIF_OP_LDTS 44 /* ldts var, rd */
|
|
#define DIF_OP_STTS 45 /* stts var, rs */
|
|
#define DIF_OP_SRA 46 /* sra r1, r2, rd */
|
|
#define DIF_OP_CALL 47 /* call subr, rd */
|
|
#define DIF_OP_PUSHTR 48 /* pushtr type, rs, rr */
|
|
#define DIF_OP_PUSHTV 49 /* pushtv type, rs, rv */
|
|
#define DIF_OP_POPTS 50 /* popts */
|
|
#define DIF_OP_FLUSHTS 51 /* flushts */
|
|
#define DIF_OP_LDGAA 52 /* ldgaa var, rd */
|
|
#define DIF_OP_LDTAA 53 /* ldtaa var, rd */
|
|
#define DIF_OP_STGAA 54 /* stgaa var, rs */
|
|
#define DIF_OP_STTAA 55 /* sttaa var, rs */
|
|
#define DIF_OP_LDLS 56 /* ldls var, rd */
|
|
#define DIF_OP_STLS 57 /* stls var, rs */
|
|
#define DIF_OP_ALLOCS 58 /* allocs r1, rd */
|
|
#define DIF_OP_COPYS 59 /* copys r1, r2, rd */
|
|
#define DIF_OP_STB 60 /* stb r1, [rd] */
|
|
#define DIF_OP_STH 61 /* sth r1, [rd] */
|
|
#define DIF_OP_STW 62 /* stw r1, [rd] */
|
|
#define DIF_OP_STX 63 /* stx r1, [rd] */
|
|
#define DIF_OP_ULDSB 64 /* uldsb [r1], rd */
|
|
#define DIF_OP_ULDSH 65 /* uldsh [r1], rd */
|
|
#define DIF_OP_ULDSW 66 /* uldsw [r1], rd */
|
|
#define DIF_OP_ULDUB 67 /* uldub [r1], rd */
|
|
#define DIF_OP_ULDUH 68 /* ulduh [r1], rd */
|
|
#define DIF_OP_ULDUW 69 /* ulduw [r1], rd */
|
|
#define DIF_OP_ULDX 70 /* uldx [r1], rd */
|
|
#define DIF_OP_RLDSB 71 /* rldsb [r1], rd */
|
|
#define DIF_OP_RLDSH 72 /* rldsh [r1], rd */
|
|
#define DIF_OP_RLDSW 73 /* rldsw [r1], rd */
|
|
#define DIF_OP_RLDUB 74 /* rldub [r1], rd */
|
|
#define DIF_OP_RLDUH 75 /* rlduh [r1], rd */
|
|
#define DIF_OP_RLDUW 76 /* rlduw [r1], rd */
|
|
#define DIF_OP_RLDX 77 /* rldx [r1], rd */
|
|
#define DIF_OP_XLATE 78 /* xlate xlrindex, rd */
|
|
#define DIF_OP_XLARG 79 /* xlarg xlrindex, rd */
|
|
#define DIF_OP_STRIP 80 /* strip r1, key, rd */
|
|
|
|
#define DIF_INTOFF_MAX 0xffff /* highest integer table offset */
|
|
#define DIF_STROFF_MAX 0xffff /* highest string table offset */
|
|
#define DIF_REGISTER_MAX 0xff /* highest register number */
|
|
#define DIF_VARIABLE_MAX 0xffff /* highest variable identifier */
|
|
#define DIF_SUBROUTINE_MAX 0xffff /* highest subroutine code */
|
|
|
|
#define DIF_VAR_ARRAY_MIN 0x0000 /* lowest numbered array variable */
|
|
#define DIF_VAR_ARRAY_UBASE 0x0080 /* lowest user-defined array */
|
|
#define DIF_VAR_ARRAY_MAX 0x00ff /* highest numbered array variable */
|
|
|
|
#define DIF_VAR_OTHER_MIN 0x0100 /* lowest numbered scalar or assc */
|
|
#define DIF_VAR_OTHER_UBASE 0x0500 /* lowest user-defined scalar or assc */
|
|
#define DIF_VAR_OTHER_MAX 0xffff /* highest numbered scalar or assc */
|
|
|
|
#define DIF_VAR_ARGS 0x0000 /* arguments array */
|
|
#define DIF_VAR_REGS 0x0001 /* registers array */
|
|
#define DIF_VAR_UREGS 0x0002 /* user registers array */
|
|
#define DIF_VAR_VMREGS 0x0003 /* virtual machine registers array */
|
|
#define DIF_VAR_CURTHREAD 0x0100 /* thread pointer */
|
|
#define DIF_VAR_TIMESTAMP 0x0101 /* timestamp */
|
|
#define DIF_VAR_VTIMESTAMP 0x0102 /* virtual timestamp */
|
|
#define DIF_VAR_IPL 0x0103 /* interrupt priority level */
|
|
#define DIF_VAR_EPID 0x0104 /* enabled probe ID */
|
|
#define DIF_VAR_ID 0x0105 /* probe ID */
|
|
#define DIF_VAR_ARG0 0x0106 /* first argument */
|
|
#define DIF_VAR_ARG1 0x0107 /* second argument */
|
|
#define DIF_VAR_ARG2 0x0108 /* third argument */
|
|
#define DIF_VAR_ARG3 0x0109 /* fourth argument */
|
|
#define DIF_VAR_ARG4 0x010a /* fifth argument */
|
|
#define DIF_VAR_ARG5 0x010b /* sixth argument */
|
|
#define DIF_VAR_ARG6 0x010c /* seventh argument */
|
|
#define DIF_VAR_ARG7 0x010d /* eighth argument */
|
|
#define DIF_VAR_ARG8 0x010e /* ninth argument */
|
|
#define DIF_VAR_ARG9 0x010f /* tenth argument */
|
|
#define DIF_VAR_STACKDEPTH 0x0110 /* stack depth */
|
|
#define DIF_VAR_CALLER 0x0111 /* caller */
|
|
#define DIF_VAR_PROBEPROV 0x0112 /* probe provider */
|
|
#define DIF_VAR_PROBEMOD 0x0113 /* probe module */
|
|
#define DIF_VAR_PROBEFUNC 0x0114 /* probe function */
|
|
#define DIF_VAR_PROBENAME 0x0115 /* probe name */
|
|
#define DIF_VAR_PID 0x0116 /* process ID */
|
|
#define DIF_VAR_TID 0x0117 /* (per-process) thread ID */
|
|
#define DIF_VAR_EXECNAME 0x0118 /* name of executable */
|
|
#define DIF_VAR_ZONENAME 0x0119 /* zone name associated with process */
|
|
#define DIF_VAR_WALLTIMESTAMP 0x011a /* wall-clock timestamp */
|
|
#define DIF_VAR_USTACKDEPTH 0x011b /* user-land stack depth */
|
|
#define DIF_VAR_UCALLER 0x011c /* user-level caller */
|
|
#define DIF_VAR_PPID 0x011d /* parent process ID */
|
|
#define DIF_VAR_UID 0x011e /* process user ID */
|
|
#define DIF_VAR_GID 0x011f /* process group ID */
|
|
#define DIF_VAR_ERRNO 0x0120 /* thread errno */
|
|
#if defined(__APPLE__)
|
|
#define DIF_VAR_PTHREAD_SELF 0x0200 /* Apple specific PTHREAD_SELF (Not currently supported!) */
|
|
#define DIF_VAR_DISPATCHQADDR 0x0201 /* Apple specific dispatch queue addr */
|
|
#define DIF_VAR_MACHTIMESTAMP 0x0202 /* mach_absolute_time() */
|
|
#define DIF_VAR_CPU 0x0203 /* cpu number */
|
|
#define DIF_VAR_CPUINSTRS 0x0204 /* cpu instructions */
|
|
#define DIF_VAR_CPUCYCLES 0x0205 /* cpu cycles */
|
|
#define DIF_VAR_VINSTRS 0x0206 /* virtual instructions */
|
|
#define DIF_VAR_VCYCLES 0x0207 /* virtual cycles */
|
|
#define DIF_VAR_MACHCTIMESTAMP 0x0208 /* mach_continuous_time() */
|
|
#endif /* __APPLE __ */
|
|
|
|
#define DIF_SUBR_RAND 0
|
|
#define DIF_SUBR_MUTEX_OWNED 1
|
|
#define DIF_SUBR_MUTEX_OWNER 2
|
|
#define DIF_SUBR_MUTEX_TYPE_ADAPTIVE 3
|
|
#define DIF_SUBR_MUTEX_TYPE_SPIN 4
|
|
#define DIF_SUBR_RW_READ_HELD 5
|
|
#define DIF_SUBR_RW_WRITE_HELD 6
|
|
#define DIF_SUBR_RW_ISWRITER 7
|
|
#define DIF_SUBR_COPYIN 8
|
|
#define DIF_SUBR_COPYINSTR 9
|
|
#define DIF_SUBR_SPECULATION 10
|
|
#define DIF_SUBR_PROGENYOF 11
|
|
#define DIF_SUBR_STRLEN 12
|
|
#define DIF_SUBR_COPYOUT 13
|
|
#define DIF_SUBR_COPYOUTSTR 14
|
|
#define DIF_SUBR_ALLOCA 15
|
|
#define DIF_SUBR_BCOPY 16
|
|
#define DIF_SUBR_COPYINTO 17
|
|
#define DIF_SUBR_MSGDSIZE 18
|
|
#define DIF_SUBR_MSGSIZE 19
|
|
#define DIF_SUBR_GETMAJOR 20
|
|
#define DIF_SUBR_GETMINOR 21
|
|
#define DIF_SUBR_DDI_PATHNAME 22
|
|
#define DIF_SUBR_STRJOIN 23
|
|
#define DIF_SUBR_LLTOSTR 24
|
|
#define DIF_SUBR_BASENAME 25
|
|
#define DIF_SUBR_DIRNAME 26
|
|
#define DIF_SUBR_CLEANPATH 27
|
|
#define DIF_SUBR_STRCHR 28
|
|
#define DIF_SUBR_STRRCHR 29
|
|
#define DIF_SUBR_STRSTR 30
|
|
#define DIF_SUBR_STRTOK 31
|
|
#define DIF_SUBR_SUBSTR 32
|
|
#define DIF_SUBR_INDEX 33
|
|
#define DIF_SUBR_RINDEX 34
|
|
#define DIF_SUBR_HTONS 35
|
|
#define DIF_SUBR_HTONL 36
|
|
#define DIF_SUBR_HTONLL 37
|
|
#define DIF_SUBR_NTOHS 38
|
|
#define DIF_SUBR_NTOHL 39
|
|
#define DIF_SUBR_NTOHLL 40
|
|
#define DIF_SUBR_INET_NTOP 41
|
|
#define DIF_SUBR_INET_NTOA 42
|
|
#define DIF_SUBR_INET_NTOA6 43
|
|
#define DIF_SUBR_TOUPPER 44
|
|
#define DIF_SUBR_TOLOWER 45
|
|
#define DIF_SUBR_JSON 46
|
|
#define DIF_SUBR_STRTOLL 47
|
|
#define DIF_SUBR_STRIP 48
|
|
#define DIF_SUBR_MAX 48 /* max subroutine value */
|
|
|
|
/* Apple-specific subroutines */
|
|
#if defined(__APPLE__)
|
|
#define DIF_SUBR_APPLE_MIN 200 /* min apple-specific subroutine value */
|
|
#define DIF_SUBR_VM_KERNEL_ADDRPERM 200
|
|
#define DIF_SUBR_KDEBUG_TRACE 201
|
|
#define DIF_SUBR_KDEBUG_TRACE_STRING 202
|
|
#define DIF_SUBR_MTONS 203
|
|
#define DIF_SUBR_PHYSMEM_READ 204
|
|
#define DIF_SUBR_PHYSMEM_WRITE 205
|
|
#define DIF_SUBR_KVTOPHYS 206
|
|
#define DIF_SUBR_LIVEDUMP 207
|
|
#define DIF_SUBR_APPLE_MAX 207 /* max apple-specific subroutine value */
|
|
#endif /* __APPLE__ */
|
|
|
|
typedef uint32_t dif_instr_t;
|
|
|
|
#define DIF_INSTR_OP(i) (((i) >> 24) & 0xff)
|
|
#define DIF_INSTR_R1(i) (((i) >> 16) & 0xff)
|
|
#define DIF_INSTR_R2(i) (((i) >> 8) & 0xff)
|
|
#define DIF_INSTR_RD(i) ((i) & 0xff)
|
|
#define DIF_INSTR_RS(i) ((i) & 0xff)
|
|
#define DIF_INSTR_IMM2(i) (((i) >> 8) & 0xff)
|
|
#define DIF_INSTR_LABEL(i) ((i) & 0xffffff)
|
|
#define DIF_INSTR_VAR(i) (((i) >> 8) & 0xffff)
|
|
#define DIF_INSTR_INTEGER(i) (((i) >> 8) & 0xffff)
|
|
#define DIF_INSTR_STRING(i) (((i) >> 8) & 0xffff)
|
|
#define DIF_INSTR_SUBR(i) (((i) >> 8) & 0xffff)
|
|
#define DIF_INSTR_TYPE(i) (((i) >> 16) & 0xff)
|
|
#define DIF_INSTR_XLREF(i) (((i) >> 8) & 0xffff)
|
|
|
|
#define DIF_INSTR_FMT(op, r1, r2, d) \
|
|
(((op) << 24) | ((r1) << 16) | ((r2) << 8) | (d))
|
|
|
|
#define DIF_INSTR_NOT(r1, d) (DIF_INSTR_FMT(DIF_OP_NOT, r1, 0, d))
|
|
#define DIF_INSTR_MOV(r1, d) (DIF_INSTR_FMT(DIF_OP_MOV, r1, 0, d))
|
|
#define DIF_INSTR_CMP(op, r1, r2) (DIF_INSTR_FMT(op, r1, r2, 0))
|
|
#define DIF_INSTR_TST(r1) (DIF_INSTR_FMT(DIF_OP_TST, r1, 0, 0))
|
|
#define DIF_INSTR_BRANCH(op, label) (((op) << 24) | (label))
|
|
#define DIF_INSTR_LOAD(op, r1, d) (DIF_INSTR_FMT(op, r1, 0, d))
|
|
#define DIF_INSTR_STORE(op, r1, d) (DIF_INSTR_FMT(op, r1, 0, d))
|
|
#define DIF_INSTR_SETX(i, d) ((DIF_OP_SETX << 24) | ((i) << 8) | (d))
|
|
#define DIF_INSTR_SETS(s, d) ((DIF_OP_SETS << 24) | ((s) << 8) | (d))
|
|
#define DIF_INSTR_RET(d) (DIF_INSTR_FMT(DIF_OP_RET, 0, 0, d))
|
|
#define DIF_INSTR_NOP (DIF_OP_NOP << 24)
|
|
#define DIF_INSTR_LDA(op, v, r, d) (DIF_INSTR_FMT(op, v, r, d))
|
|
#define DIF_INSTR_LDV(op, v, d) (((op) << 24) | ((v) << 8) | (d))
|
|
#define DIF_INSTR_STV(op, v, rs) (((op) << 24) | ((v) << 8) | (rs))
|
|
#define DIF_INSTR_CALL(s, d) ((DIF_OP_CALL << 24) | ((s) << 8) | (d))
|
|
#define DIF_INSTR_PUSHTS(op, t, r2, rs) (DIF_INSTR_FMT(op, t, r2, rs))
|
|
#define DIF_INSTR_POPTS (DIF_OP_POPTS << 24)
|
|
#define DIF_INSTR_FLUSHTS (DIF_OP_FLUSHTS << 24)
|
|
#define DIF_INSTR_ALLOCS(r1, d) (DIF_INSTR_FMT(DIF_OP_ALLOCS, r1, 0, d))
|
|
#define DIF_INSTR_COPYS(r1, r2, d) (DIF_INSTR_FMT(DIF_OP_COPYS, r1, r2, d))
|
|
#define DIF_INSTR_XLATE(op, r, d) (((op) << 24) | ((r) << 8) | (d))
|
|
|
|
#define DIF_REG_R0 0 /* %r0 is always set to zero */
|
|
|
|
/*
|
|
* A DTrace Intermediate Format Type (DIF Type) is used to represent the types
|
|
* of variables, function and associative array arguments, and the return type
|
|
* for each DIF object (shown below). It contains a description of the type,
|
|
* its size in bytes, and a module identifier.
|
|
*/
|
|
typedef struct dtrace_diftype {
|
|
uint8_t dtdt_kind; /* type kind (see below) */
|
|
uint8_t dtdt_ckind; /* type kind in CTF */
|
|
uint8_t dtdt_flags; /* type flags (see below) */
|
|
uint8_t dtdt_pad; /* reserved for future use */
|
|
uint32_t dtdt_size; /* type size in bytes (unless string) */
|
|
} dtrace_diftype_t;
|
|
|
|
#define DIF_TYPE_CTF 0 /* type is a CTF type */
|
|
#define DIF_TYPE_STRING 1 /* type is a D string */
|
|
|
|
#define DIF_TF_BYREF 0x1 /* type is passed by reference */
|
|
#define DIF_TF_BYUREF 0x2 /* user type is passed by reference */
|
|
|
|
/*
|
|
* A DTrace Intermediate Format variable record is used to describe each of the
|
|
* variables referenced by a given DIF object. It contains an integer variable
|
|
* identifier along with variable scope and properties, as shown below. The
|
|
* size of this structure must be sizeof (int) aligned.
|
|
*/
|
|
typedef struct dtrace_difv {
|
|
uint32_t dtdv_name; /* variable name index in dtdo_strtab */
|
|
uint32_t dtdv_id; /* variable reference identifier */
|
|
uint8_t dtdv_kind; /* variable kind (see below) */
|
|
uint8_t dtdv_scope; /* variable scope (see below) */
|
|
uint16_t dtdv_flags; /* variable flags (see below) */
|
|
dtrace_diftype_t dtdv_type; /* variable type (see above) */
|
|
} dtrace_difv_t;
|
|
|
|
#define DIFV_KIND_ARRAY 0 /* variable is an array of quantities */
|
|
#define DIFV_KIND_SCALAR 1 /* variable is a scalar quantity */
|
|
|
|
#define DIFV_SCOPE_GLOBAL 0 /* variable has global scope */
|
|
#define DIFV_SCOPE_THREAD 1 /* variable has thread scope */
|
|
#define DIFV_SCOPE_LOCAL 2 /* variable has local scope */
|
|
|
|
#define DIFV_F_REF 0x1 /* variable is referenced by DIFO */
|
|
#define DIFV_F_MOD 0x2 /* variable is written by DIFO */
|
|
|
|
/*
|
|
* DTrace Actions
|
|
*
|
|
* The upper byte determines the class of the action; the low bytes determines
|
|
* the specific action within that class. The classes of actions are as
|
|
* follows:
|
|
*
|
|
* [ no class ] <= May record process- or kernel-related data
|
|
* DTRACEACT_PROC <= Only records process-related data
|
|
* DTRACEACT_PROC_DESTRUCTIVE <= Potentially destructive to processes
|
|
* DTRACEACT_KERNEL <= Only records kernel-related data
|
|
* DTRACEACT_KERNEL_DESTRUCTIVE <= Potentially destructive to the kernel
|
|
* DTRACEACT_SPECULATIVE <= Speculation-related action
|
|
* DTRACEACT_AGGREGATION <= Aggregating action
|
|
*/
|
|
#define DTRACEACT_NONE 0 /* no action */
|
|
#define DTRACEACT_DIFEXPR 1 /* action is DIF expression */
|
|
#define DTRACEACT_EXIT 2 /* exit() action */
|
|
#define DTRACEACT_PRINTF 3 /* printf() action */
|
|
#define DTRACEACT_PRINTA 4 /* printa() action */
|
|
#define DTRACEACT_LIBACT 5 /* library-controlled action */
|
|
#define DTRACEACT_TRACEMEM 6 /* tracemem() action */
|
|
#define DTRACEACT_TRACEMEM_DYNSIZE 7 /* dynamic tracemem() size */
|
|
|
|
#if defined(__APPLE__)
|
|
#define DTRACEACT_APPLEBINARY 50 /* Apple DT perf. tool action */
|
|
#endif /* __APPLE__ */
|
|
|
|
#define DTRACEACT_PROC 0x0100
|
|
#define DTRACEACT_USTACK (DTRACEACT_PROC + 1)
|
|
#define DTRACEACT_JSTACK (DTRACEACT_PROC + 2)
|
|
#define DTRACEACT_USYM (DTRACEACT_PROC + 3)
|
|
#define DTRACEACT_UMOD (DTRACEACT_PROC + 4)
|
|
#define DTRACEACT_UADDR (DTRACEACT_PROC + 5)
|
|
|
|
#define DTRACEACT_PROC_DESTRUCTIVE 0x0200
|
|
#define DTRACEACT_STOP (DTRACEACT_PROC_DESTRUCTIVE + 1)
|
|
#define DTRACEACT_RAISE (DTRACEACT_PROC_DESTRUCTIVE + 2)
|
|
#define DTRACEACT_SYSTEM (DTRACEACT_PROC_DESTRUCTIVE + 3)
|
|
#define DTRACEACT_FREOPEN (DTRACEACT_PROC_DESTRUCTIVE + 4)
|
|
|
|
#if defined(__APPLE__)
|
|
/*
|
|
* Dtrace stop() will task_suspend the currently running process.
|
|
* Dtrace pidresume(pid) will task_resume it.
|
|
*/
|
|
|
|
#define DTRACEACT_PIDRESUME (DTRACEACT_PROC_DESTRUCTIVE + 50)
|
|
#endif /* __APPLE__ */
|
|
|
|
#define DTRACEACT_PROC_CONTROL 0x0300
|
|
|
|
#define DTRACEACT_KERNEL 0x0400
|
|
#define DTRACEACT_STACK (DTRACEACT_KERNEL + 1)
|
|
#define DTRACEACT_SYM (DTRACEACT_KERNEL + 2)
|
|
#define DTRACEACT_MOD (DTRACEACT_KERNEL + 3)
|
|
|
|
#define DTRACEACT_KERNEL_DESTRUCTIVE 0x0500
|
|
#define DTRACEACT_BREAKPOINT (DTRACEACT_KERNEL_DESTRUCTIVE + 1)
|
|
#define DTRACEACT_PANIC (DTRACEACT_KERNEL_DESTRUCTIVE + 2)
|
|
#define DTRACEACT_CHILL (DTRACEACT_KERNEL_DESTRUCTIVE + 3)
|
|
|
|
#define DTRACEACT_SPECULATIVE 0x0600
|
|
#define DTRACEACT_SPECULATE (DTRACEACT_SPECULATIVE + 1)
|
|
#define DTRACEACT_COMMIT (DTRACEACT_SPECULATIVE + 2)
|
|
#define DTRACEACT_DISCARD (DTRACEACT_SPECULATIVE + 3)
|
|
|
|
#define DTRACEACT_CLASS(x) ((x) & 0xff00)
|
|
|
|
#define DTRACEACT_ISDESTRUCTIVE(x) \
|
|
(DTRACEACT_CLASS(x) == DTRACEACT_PROC_DESTRUCTIVE || \
|
|
DTRACEACT_CLASS(x) == DTRACEACT_KERNEL_DESTRUCTIVE)
|
|
|
|
#define DTRACEACT_ISSPECULATIVE(x) \
|
|
(DTRACEACT_CLASS(x) == DTRACEACT_SPECULATIVE)
|
|
|
|
#define DTRACEACT_ISPRINTFLIKE(x) \
|
|
((x) == DTRACEACT_PRINTF || (x) == DTRACEACT_PRINTA || \
|
|
(x) == DTRACEACT_SYSTEM || (x) == DTRACEACT_FREOPEN)
|
|
|
|
/*
|
|
* DTrace Aggregating Actions
|
|
*
|
|
* These are functions f(x) for which the following is true:
|
|
*
|
|
* f(f(x_0) U f(x_1) U ... U f(x_n)) = f(x_0 U x_1 U ... U x_n)
|
|
*
|
|
* where x_n is a set of arbitrary data. Aggregating actions are in their own
|
|
* DTrace action class, DTTRACEACT_AGGREGATION. The macros provided here allow
|
|
* for easier processing of the aggregation argument and data payload for a few
|
|
* aggregating actions (notably: quantize(), lquantize(), and ustack()).
|
|
*/
|
|
#define DTRACEACT_AGGREGATION 0x0700
|
|
#define DTRACEAGG_COUNT (DTRACEACT_AGGREGATION + 1)
|
|
#define DTRACEAGG_MIN (DTRACEACT_AGGREGATION + 2)
|
|
#define DTRACEAGG_MAX (DTRACEACT_AGGREGATION + 3)
|
|
#define DTRACEAGG_AVG (DTRACEACT_AGGREGATION + 4)
|
|
#define DTRACEAGG_SUM (DTRACEACT_AGGREGATION + 5)
|
|
#define DTRACEAGG_STDDEV (DTRACEACT_AGGREGATION + 6)
|
|
#define DTRACEAGG_QUANTIZE (DTRACEACT_AGGREGATION + 7)
|
|
#define DTRACEAGG_LQUANTIZE (DTRACEACT_AGGREGATION + 8)
|
|
#define DTRACEAGG_LLQUANTIZE (DTRACEACT_AGGREGATION + 9)
|
|
|
|
#define DTRACEACT_ISAGG(x) \
|
|
(DTRACEACT_CLASS(x) == DTRACEACT_AGGREGATION)
|
|
|
|
#if !defined(__APPLE__) /* Quiet compiler warning. */
|
|
#define DTRACE_QUANTIZE_NBUCKETS \
|
|
(((sizeof (uint64_t) * NBBY) - 1) * 2 + 1)
|
|
|
|
#define DTRACE_QUANTIZE_ZEROBUCKET ((sizeof (uint64_t) * NBBY) - 1)
|
|
#else
|
|
#define DTRACE_QUANTIZE_NBUCKETS \
|
|
(int)(((sizeof (uint64_t) * NBBY) - 1) * 2 + 1)
|
|
|
|
#define DTRACE_QUANTIZE_ZEROBUCKET (int64_t)((sizeof (uint64_t) * NBBY) - 1)
|
|
#endif /* __APPLE __*/
|
|
|
|
#define DTRACE_QUANTIZE_BUCKETVAL(buck) \
|
|
(int64_t)((buck) < DTRACE_QUANTIZE_ZEROBUCKET ? \
|
|
-(1LL << (DTRACE_QUANTIZE_ZEROBUCKET - 1 - (buck))) : \
|
|
(buck) == DTRACE_QUANTIZE_ZEROBUCKET ? 0 : \
|
|
1LL << ((buck) - DTRACE_QUANTIZE_ZEROBUCKET - 1))
|
|
|
|
#define DTRACE_LQUANTIZE_STEPSHIFT 48
|
|
#define DTRACE_LQUANTIZE_STEPMASK ((uint64_t)UINT16_MAX << 48)
|
|
#define DTRACE_LQUANTIZE_LEVELSHIFT 32
|
|
#define DTRACE_LQUANTIZE_LEVELMASK ((uint64_t)UINT16_MAX << 32)
|
|
#define DTRACE_LQUANTIZE_BASESHIFT 0
|
|
#define DTRACE_LQUANTIZE_BASEMASK UINT32_MAX
|
|
|
|
#define DTRACE_LQUANTIZE_STEP(x) \
|
|
(uint16_t)(((x) & DTRACE_LQUANTIZE_STEPMASK) >> \
|
|
DTRACE_LQUANTIZE_STEPSHIFT)
|
|
|
|
#define DTRACE_LQUANTIZE_LEVELS(x) \
|
|
(uint16_t)(((x) & DTRACE_LQUANTIZE_LEVELMASK) >> \
|
|
DTRACE_LQUANTIZE_LEVELSHIFT)
|
|
|
|
#define DTRACE_LQUANTIZE_BASE(x) \
|
|
(int32_t)(((x) & DTRACE_LQUANTIZE_BASEMASK) >> \
|
|
DTRACE_LQUANTIZE_BASESHIFT)
|
|
|
|
#define DTRACE_LLQUANTIZE_FACTORSHIFT 48
|
|
#define DTRACE_LLQUANTIZE_FACTORMASK ((uint64_t)UINT16_MAX << 48)
|
|
#define DTRACE_LLQUANTIZE_LOWSHIFT 32
|
|
#define DTRACE_LLQUANTIZE_LOWMASK ((uint64_t)UINT16_MAX << 32)
|
|
#define DTRACE_LLQUANTIZE_HIGHSHIFT 16
|
|
#define DTRACE_LLQUANTIZE_HIGHMASK ((uint64_t)UINT16_MAX << 16)
|
|
#define DTRACE_LLQUANTIZE_NSTEPSHIFT 0
|
|
#define DTRACE_LLQUANTIZE_NSTEPMASK UINT16_MAX
|
|
|
|
#define DTRACE_LLQUANTIZE_FACTOR(x) \
|
|
(uint16_t)(((x) & DTRACE_LLQUANTIZE_FACTORMASK) >> \
|
|
DTRACE_LLQUANTIZE_FACTORSHIFT)
|
|
|
|
#define DTRACE_LLQUANTIZE_LOW(x) \
|
|
(uint16_t)(((x) & DTRACE_LLQUANTIZE_LOWMASK) >> \
|
|
DTRACE_LLQUANTIZE_LOWSHIFT)
|
|
|
|
#define DTRACE_LLQUANTIZE_HIGH(x) \
|
|
(uint16_t)(((x) & DTRACE_LLQUANTIZE_HIGHMASK) >> \
|
|
DTRACE_LLQUANTIZE_HIGHSHIFT)
|
|
|
|
#define DTRACE_LLQUANTIZE_NSTEP(x) \
|
|
(uint16_t)(((x) & DTRACE_LLQUANTIZE_NSTEPMASK) >> \
|
|
DTRACE_LLQUANTIZE_NSTEPSHIFT)
|
|
|
|
#define DTRACE_USTACK_NFRAMES(x) (uint32_t)((x) & UINT32_MAX)
|
|
#define DTRACE_USTACK_STRSIZE(x) (uint32_t)((x) >> 32)
|
|
#define DTRACE_USTACK_ARG(x, y) \
|
|
((((uint64_t)(y)) << 32) | ((x) & UINT32_MAX))
|
|
|
|
#if !defined(__APPLE__)
|
|
|
|
#ifndef _LP64
|
|
#ifndef _LITTLE_ENDIAN
|
|
#define DTRACE_PTR(type, name) uint32_t name##pad; type *name
|
|
#else
|
|
#define DTRACE_PTR(type, name) type *name; uint32_t name##pad
|
|
#endif
|
|
#else
|
|
#define DTRACE_PTR(type, name) type *name
|
|
#endif
|
|
|
|
#else
|
|
|
|
#ifndef _LP64
|
|
#define DTRACE_PTR(type, name) user_addr_t name
|
|
#else
|
|
#define DTRACE_PTR(type, name) type *name
|
|
#endif
|
|
|
|
#endif /* __APPLE__ */
|
|
|
|
/*
|
|
* DTrace Object Format (DOF)
|
|
*
|
|
* DTrace programs can be persistently encoded in the DOF format so that they
|
|
* may be embedded in other programs (for example, in an ELF file) or in the
|
|
* dtrace driver configuration file for use in anonymous tracing. The DOF
|
|
* format is versioned and extensible so that it can be revised and so that
|
|
* internal data structures can be modified or extended compatibly. All DOF
|
|
* structures use fixed-size types, so the 32-bit and 64-bit representations
|
|
* are identical and consumers can use either data model transparently.
|
|
*
|
|
* The file layout is structured as follows:
|
|
*
|
|
* +---------------+-------------------+----- ... ----+---- ... ------+
|
|
* | dof_hdr_t | dof_sec_t[ ... ] | loadable | non-loadable |
|
|
* | (file header) | (section headers) | section data | section data |
|
|
* +---------------+-------------------+----- ... ----+---- ... ------+
|
|
* |<------------ dof_hdr.dofh_loadsz --------------->| |
|
|
* |<------------ dof_hdr.dofh_filesz ------------------------------->|
|
|
*
|
|
* The file header stores meta-data including a magic number, data model for
|
|
* the instrumentation, data encoding, and properties of the DIF code within.
|
|
* The header describes its own size and the size of the section headers. By
|
|
* convention, an array of section headers follows the file header, and then
|
|
* the data for all loadable sections and unloadable sections. This permits
|
|
* consumer code to easily download the headers and all loadable data into the
|
|
* DTrace driver in one contiguous chunk, omitting other extraneous sections.
|
|
*
|
|
* The section headers describe the size, offset, alignment, and section type
|
|
* for each section. Sections are described using a set of #defines that tell
|
|
* the consumer what kind of data is expected. Sections can contain links to
|
|
* other sections by storing a dof_secidx_t, an index into the section header
|
|
* array, inside of the section data structures. The section header includes
|
|
* an entry size so that sections with data arrays can grow their structures.
|
|
*
|
|
* The DOF data itself can contain many snippets of DIF (i.e. >1 DIFOs), which
|
|
* are represented themselves as a collection of related DOF sections. This
|
|
* permits us to change the set of sections associated with a DIFO over time,
|
|
* and also permits us to encode DIFOs that contain different sets of sections.
|
|
* When a DOF section wants to refer to a DIFO, it stores the dof_secidx_t of a
|
|
* section of type DOF_SECT_DIFOHDR. This section's data is then an array of
|
|
* dof_secidx_t's which in turn denote the sections associated with this DIFO.
|
|
*
|
|
* This loose coupling of the file structure (header and sections) to the
|
|
* structure of the DTrace program itself (ECB descriptions, action
|
|
* descriptions, and DIFOs) permits activities such as relocation processing
|
|
* to occur in a single pass without having to understand D program structure.
|
|
*
|
|
* Finally, strings are always stored in ELF-style string tables along with a
|
|
* string table section index and string table offset. Therefore strings in
|
|
* DOF are always arbitrary-length and not bound to the current implementation.
|
|
*/
|
|
|
|
#define DOF_ID_SIZE 16 /* total size of dofh_ident[] in bytes */
|
|
|
|
typedef struct dof_hdr {
|
|
uint8_t dofh_ident[DOF_ID_SIZE]; /* identification bytes (see below) */
|
|
uint32_t dofh_flags; /* file attribute flags (if any) */
|
|
uint32_t dofh_hdrsize; /* size of file header in bytes */
|
|
uint32_t dofh_secsize; /* size of section header in bytes */
|
|
uint32_t dofh_secnum; /* number of section headers */
|
|
uint64_t dofh_secoff; /* file offset of section headers */
|
|
uint64_t dofh_loadsz; /* file size of loadable portion */
|
|
uint64_t dofh_filesz; /* file size of entire DOF file */
|
|
uint64_t dofh_pad; /* reserved for future use */
|
|
} dof_hdr_t;
|
|
|
|
#define DOF_ID_MAG0 0 /* first byte of magic number */
|
|
#define DOF_ID_MAG1 1 /* second byte of magic number */
|
|
#define DOF_ID_MAG2 2 /* third byte of magic number */
|
|
#define DOF_ID_MAG3 3 /* fourth byte of magic number */
|
|
#define DOF_ID_MODEL 4 /* DOF data model (see below) */
|
|
#define DOF_ID_ENCODING 5 /* DOF data encoding (see below) */
|
|
#define DOF_ID_VERSION 6 /* DOF file format major version (see below) */
|
|
#define DOF_ID_DIFVERS 7 /* DIF instruction set version */
|
|
#define DOF_ID_DIFIREG 8 /* DIF integer registers used by compiler */
|
|
#define DOF_ID_DIFTREG 9 /* DIF tuple registers used by compiler */
|
|
#define DOF_ID_PAD 10 /* start of padding bytes (all zeroes) */
|
|
|
|
#define DOF_MAG_MAG0 0x7F /* DOF_ID_MAG[0-3] */
|
|
#define DOF_MAG_MAG1 'D'
|
|
#define DOF_MAG_MAG2 'O'
|
|
#define DOF_MAG_MAG3 'F'
|
|
|
|
#define DOF_MAG_STRING "\177DOF"
|
|
#define DOF_MAG_STRLEN 4
|
|
|
|
#define DOF_MODEL_NONE 0 /* DOF_ID_MODEL */
|
|
#define DOF_MODEL_ILP32 1
|
|
#define DOF_MODEL_LP64 2
|
|
|
|
#ifdef _LP64
|
|
#define DOF_MODEL_NATIVE DOF_MODEL_LP64
|
|
#else
|
|
#define DOF_MODEL_NATIVE DOF_MODEL_ILP32
|
|
#endif
|
|
|
|
#define DOF_ENCODE_NONE 0 /* DOF_ID_ENCODING */
|
|
#define DOF_ENCODE_LSB 1
|
|
#define DOF_ENCODE_MSB 2
|
|
|
|
#ifdef _BIG_ENDIAN
|
|
#define DOF_ENCODE_NATIVE DOF_ENCODE_MSB
|
|
#else
|
|
#define DOF_ENCODE_NATIVE DOF_ENCODE_LSB
|
|
#endif
|
|
|
|
#define DOF_VERSION_1 1 /* DOF version 1: Solaris 10 FCS */
|
|
#define DOF_VERSION_2 2 /* DOF version 2: Solaris Express 6/06 */
|
|
#if !defined(__APPLE__)
|
|
#define DOF_VERSION DOF_VERSION_2 /* Latest DOF version */
|
|
#else
|
|
#define DOF_VERSION_3 3 /* DOF version 3: Minimum version for Leopard */
|
|
#define DOF_VERSION DOF_VERSION_3 /* Latest DOF version */
|
|
#endif /* __APPLE__ */
|
|
|
|
#define DOF_FL_VALID 0 /* mask of all valid dofh_flags bits */
|
|
|
|
typedef uint32_t dof_secidx_t; /* section header table index type */
|
|
typedef uint32_t dof_stridx_t; /* string table index type */
|
|
|
|
#define DOF_SECIDX_NONE (-1U) /* null value for section indices */
|
|
#define DOF_STRIDX_NONE (-1U) /* null value for string indices */
|
|
|
|
typedef struct dof_sec {
|
|
uint32_t dofs_type; /* section type (see below) */
|
|
uint32_t dofs_align; /* section data memory alignment */
|
|
uint32_t dofs_flags; /* section flags (if any) */
|
|
uint32_t dofs_entsize; /* size of section entry (if table) */
|
|
uint64_t dofs_offset; /* offset of section data within file */
|
|
uint64_t dofs_size; /* size of section data in bytes */
|
|
} dof_sec_t;
|
|
|
|
#define DOF_SECT_NONE 0 /* null section */
|
|
#define DOF_SECT_COMMENTS 1 /* compiler comments */
|
|
#define DOF_SECT_SOURCE 2 /* D program source code */
|
|
#define DOF_SECT_ECBDESC 3 /* dof_ecbdesc_t */
|
|
#define DOF_SECT_PROBEDESC 4 /* dof_probedesc_t */
|
|
#define DOF_SECT_ACTDESC 5 /* dof_actdesc_t array */
|
|
#define DOF_SECT_DIFOHDR 6 /* dof_difohdr_t (variable length) */
|
|
#define DOF_SECT_DIF 7 /* uint32_t array of byte code */
|
|
#define DOF_SECT_STRTAB 8 /* string table */
|
|
#define DOF_SECT_VARTAB 9 /* dtrace_difv_t array */
|
|
#define DOF_SECT_RELTAB 10 /* dof_relodesc_t array */
|
|
#define DOF_SECT_TYPTAB 11 /* dtrace_diftype_t array */
|
|
#define DOF_SECT_URELHDR 12 /* dof_relohdr_t (user relocations) */
|
|
#define DOF_SECT_KRELHDR 13 /* dof_relohdr_t (kernel relocations) */
|
|
#define DOF_SECT_OPTDESC 14 /* dof_optdesc_t array */
|
|
#define DOF_SECT_PROVIDER 15 /* dof_provider_t */
|
|
#define DOF_SECT_PROBES 16 /* dof_probe_t array */
|
|
#define DOF_SECT_PRARGS 17 /* uint8_t array (probe arg mappings) */
|
|
#define DOF_SECT_PROFFS 18 /* uint32_t array (probe arg offsets) */
|
|
#define DOF_SECT_INTTAB 19 /* uint64_t array */
|
|
#define DOF_SECT_UTSNAME 20 /* struct utsname */
|
|
#define DOF_SECT_XLTAB 21 /* dof_xlref_t array */
|
|
#define DOF_SECT_XLMEMBERS 22 /* dof_xlmember_t array */
|
|
#define DOF_SECT_XLIMPORT 23 /* dof_xlator_t */
|
|
#define DOF_SECT_XLEXPORT 24 /* dof_xlator_t */
|
|
#define DOF_SECT_PREXPORT 25 /* dof_secidx_t array (exported objs) */
|
|
#define DOF_SECT_PRENOFFS 26 /* uint32_t array (enabled offsets) */
|
|
|
|
#define DOF_SECF_LOAD 1 /* section should be loaded */
|
|
|
|
typedef struct dof_ecbdesc {
|
|
dof_secidx_t dofe_probes; /* link to DOF_SECT_PROBEDESC */
|
|
dof_secidx_t dofe_pred; /* link to DOF_SECT_DIFOHDR */
|
|
dof_secidx_t dofe_actions; /* link to DOF_SECT_ACTDESC */
|
|
uint32_t dofe_pad; /* reserved for future use */
|
|
uint64_t dofe_uarg; /* user-supplied library argument */
|
|
} dof_ecbdesc_t;
|
|
|
|
typedef struct dof_probedesc {
|
|
dof_secidx_t dofp_strtab; /* link to DOF_SECT_STRTAB section */
|
|
dof_stridx_t dofp_provider; /* provider string */
|
|
dof_stridx_t dofp_mod; /* module string */
|
|
dof_stridx_t dofp_func; /* function string */
|
|
dof_stridx_t dofp_name; /* name string */
|
|
uint32_t dofp_id; /* probe identifier (or zero) */
|
|
} dof_probedesc_t;
|
|
|
|
typedef struct dof_actdesc {
|
|
dof_secidx_t dofa_difo; /* link to DOF_SECT_DIFOHDR */
|
|
dof_secidx_t dofa_strtab; /* link to DOF_SECT_STRTAB section */
|
|
uint32_t dofa_kind; /* action kind (DTRACEACT_* constant) */
|
|
uint32_t dofa_ntuple; /* number of subsequent tuple actions */
|
|
uint64_t dofa_arg; /* kind-specific argument */
|
|
uint64_t dofa_uarg; /* user-supplied argument */
|
|
} dof_actdesc_t;
|
|
|
|
typedef struct dof_difohdr {
|
|
dtrace_diftype_t dofd_rtype; /* return type for this fragment */
|
|
dof_secidx_t dofd_links[1]; /* variable length array of indices */
|
|
} dof_difohdr_t;
|
|
|
|
typedef struct dof_relohdr {
|
|
dof_secidx_t dofr_strtab; /* link to DOF_SECT_STRTAB for names */
|
|
dof_secidx_t dofr_relsec; /* link to DOF_SECT_RELTAB for relos */
|
|
dof_secidx_t dofr_tgtsec; /* link to section we are relocating */
|
|
} dof_relohdr_t;
|
|
|
|
typedef struct dof_relodesc {
|
|
dof_stridx_t dofr_name; /* string name of relocation symbol */
|
|
uint32_t dofr_type; /* relo type (DOF_RELO_* constant) */
|
|
uint64_t dofr_offset; /* byte offset for relocation */
|
|
uint64_t dofr_data; /* additional type-specific data */
|
|
} dof_relodesc_t;
|
|
|
|
#define DOF_RELO_NONE 0 /* empty relocation entry */
|
|
#define DOF_RELO_SETX 1 /* relocate setx value */
|
|
|
|
typedef struct dof_optdesc {
|
|
uint32_t dofo_option; /* option identifier */
|
|
dof_secidx_t dofo_strtab; /* string table, if string option */
|
|
uint64_t dofo_value; /* option value or string index */
|
|
} dof_optdesc_t;
|
|
|
|
typedef uint32_t dof_attr_t; /* encoded stability attributes */
|
|
|
|
#define DOF_ATTR(n, d, c) (((n) << 24) | ((d) << 16) | ((c) << 8))
|
|
#define DOF_ATTR_NAME(a) (((a) >> 24) & 0xff)
|
|
#define DOF_ATTR_DATA(a) (((a) >> 16) & 0xff)
|
|
#define DOF_ATTR_CLASS(a) (((a) >> 8) & 0xff)
|
|
|
|
typedef struct dof_provider {
|
|
dof_secidx_t dofpv_strtab; /* link to DOF_SECT_STRTAB section */
|
|
dof_secidx_t dofpv_probes; /* link to DOF_SECT_PROBES section */
|
|
dof_secidx_t dofpv_prargs; /* link to DOF_SECT_PRARGS section */
|
|
dof_secidx_t dofpv_proffs; /* link to DOF_SECT_PROFFS section */
|
|
dof_stridx_t dofpv_name; /* provider name string */
|
|
dof_attr_t dofpv_provattr; /* provider attributes */
|
|
dof_attr_t dofpv_modattr; /* module attributes */
|
|
dof_attr_t dofpv_funcattr; /* function attributes */
|
|
dof_attr_t dofpv_nameattr; /* name attributes */
|
|
dof_attr_t dofpv_argsattr; /* args attributes */
|
|
dof_secidx_t dofpv_prenoffs; /* link to DOF_SECT_PRENOFFS section */
|
|
} dof_provider_t;
|
|
|
|
typedef struct dof_probe {
|
|
uint64_t dofpr_addr; /* probe base address or offset */
|
|
dof_stridx_t dofpr_func; /* probe function string */
|
|
dof_stridx_t dofpr_name; /* probe name string */
|
|
dof_stridx_t dofpr_nargv; /* native argument type strings */
|
|
dof_stridx_t dofpr_xargv; /* translated argument type strings */
|
|
uint32_t dofpr_argidx; /* index of first argument mapping */
|
|
uint32_t dofpr_offidx; /* index of first offset entry */
|
|
uint8_t dofpr_nargc; /* native argument count */
|
|
uint8_t dofpr_xargc; /* translated argument count */
|
|
uint16_t dofpr_noffs; /* number of offset entries for probe */
|
|
uint32_t dofpr_enoffidx; /* index of first is-enabled offset */
|
|
uint16_t dofpr_nenoffs; /* number of is-enabled offsets */
|
|
uint16_t dofpr_pad1; /* reserved for future use */
|
|
uint32_t dofpr_pad2; /* reserved for future use */
|
|
} dof_probe_t;
|
|
|
|
typedef struct dof_xlator {
|
|
dof_secidx_t dofxl_members; /* link to DOF_SECT_XLMEMBERS section */
|
|
dof_secidx_t dofxl_strtab; /* link to DOF_SECT_STRTAB section */
|
|
dof_stridx_t dofxl_argv; /* input parameter type strings */
|
|
uint32_t dofxl_argc; /* input parameter list length */
|
|
dof_stridx_t dofxl_type; /* output type string name */
|
|
dof_attr_t dofxl_attr; /* output stability attributes */
|
|
} dof_xlator_t;
|
|
|
|
typedef struct dof_xlmember {
|
|
dof_secidx_t dofxm_difo; /* member link to DOF_SECT_DIFOHDR */
|
|
dof_stridx_t dofxm_name; /* member name */
|
|
dtrace_diftype_t dofxm_type; /* member type */
|
|
} dof_xlmember_t;
|
|
|
|
typedef struct dof_xlref {
|
|
dof_secidx_t dofxr_xlator; /* link to DOF_SECT_XLATORS section */
|
|
uint32_t dofxr_member; /* index of referenced dof_xlmember */
|
|
uint32_t dofxr_argn; /* index of argument for DIF_OP_XLARG */
|
|
} dof_xlref_t;
|
|
|
|
/*
|
|
* DTrace Intermediate Format Object (DIFO)
|
|
*
|
|
* A DIFO is used to store the compiled DIF for a D expression, its return
|
|
* type, and its string and variable tables. The string table is a single
|
|
* buffer of character data into which sets instructions and variable
|
|
* references can reference strings using a byte offset. The variable table
|
|
* is an array of dtrace_difv_t structures that describe the name and type of
|
|
* each variable and the id used in the DIF code. This structure is described
|
|
* above in the DIF section of this header file. The DIFO is used at both
|
|
* user-level (in the library) and in the kernel, but the structure is never
|
|
* passed between the two: the DOF structures form the only interface. As a
|
|
* result, the definition can change depending on the presence of _KERNEL.
|
|
*/
|
|
typedef struct dtrace_difo {
|
|
dif_instr_t *dtdo_buf; /* instruction buffer */
|
|
uint64_t *dtdo_inttab; /* integer table (optional) */
|
|
char *dtdo_strtab; /* string table (optional) */
|
|
dtrace_difv_t *dtdo_vartab; /* variable table (optional) */
|
|
uint_t dtdo_len; /* length of instruction buffer */
|
|
uint_t dtdo_intlen; /* length of integer table */
|
|
uint_t dtdo_strlen; /* length of string table */
|
|
uint_t dtdo_varlen; /* length of variable table */
|
|
dtrace_diftype_t dtdo_rtype; /* return type */
|
|
uint_t dtdo_refcnt; /* owner reference count */
|
|
uint_t dtdo_destructive; /* invokes destructive subroutines */
|
|
#ifndef _KERNEL
|
|
dof_relodesc_t *dtdo_kreltab; /* kernel relocations */
|
|
dof_relodesc_t *dtdo_ureltab; /* user relocations */
|
|
struct dt_node **dtdo_xlmtab; /* translator references */
|
|
uint_t dtdo_krelen; /* length of krelo table */
|
|
uint_t dtdo_urelen; /* length of urelo table */
|
|
uint_t dtdo_xlmlen; /* length of translator table */
|
|
#endif
|
|
} dtrace_difo_t;
|
|
|
|
/*
|
|
* DTrace Enabling Description Structures
|
|
*
|
|
* When DTrace is tracking the description of a DTrace enabling entity (probe,
|
|
* predicate, action, ECB, record, etc.), it does so in a description
|
|
* structure. These structures all end in "desc", and are used at both
|
|
* user-level and in the kernel -- but (with the exception of
|
|
* dtrace_probedesc_t) they are never passed between them. Typically,
|
|
* user-level will use the description structures when assembling an enabling.
|
|
* It will then distill those description structures into a DOF object (see
|
|
* above), and send it into the kernel. The kernel will again use the
|
|
* description structures to create a description of the enabling as it reads
|
|
* the DOF. When the description is complete, the enabling will be actually
|
|
* created -- turning it into the structures that represent the enabling
|
|
* instead of merely describing it. Not surprisingly, the description
|
|
* structures bear a strong resemblance to the DOF structures that act as their
|
|
* conduit.
|
|
*/
|
|
struct dtrace_predicate;
|
|
|
|
typedef struct dtrace_probedesc {
|
|
dtrace_id_t dtpd_id; /* probe identifier */
|
|
char dtpd_provider[DTRACE_PROVNAMELEN]; /* probe provider name */
|
|
char dtpd_mod[DTRACE_MODNAMELEN]; /* probe module name */
|
|
char dtpd_func[DTRACE_FUNCNAMELEN]; /* probe function name */
|
|
char dtpd_name[DTRACE_NAMELEN]; /* probe name */
|
|
} dtrace_probedesc_t;
|
|
|
|
typedef struct dtrace_repldesc {
|
|
dtrace_probedesc_t dtrpd_match; /* probe descr. to match */
|
|
dtrace_probedesc_t dtrpd_create; /* probe descr. to create */
|
|
} dtrace_repldesc_t;
|
|
|
|
typedef struct dtrace_preddesc {
|
|
dtrace_difo_t *dtpdd_difo; /* pointer to DIF object */
|
|
struct dtrace_predicate *dtpdd_predicate; /* pointer to predicate */
|
|
} dtrace_preddesc_t;
|
|
|
|
typedef struct dtrace_actdesc {
|
|
dtrace_difo_t *dtad_difo; /* pointer to DIF object */
|
|
struct dtrace_actdesc *dtad_next; /* next action */
|
|
dtrace_actkind_t dtad_kind; /* kind of action */
|
|
uint32_t dtad_ntuple; /* number in tuple */
|
|
uint64_t dtad_arg; /* action argument */
|
|
uint64_t dtad_uarg; /* user argument */
|
|
int dtad_refcnt; /* reference count */
|
|
} dtrace_actdesc_t;
|
|
|
|
|
|
typedef struct dtrace_ecbdesc {
|
|
dtrace_actdesc_t *dted_action; /* action description(s) */
|
|
dtrace_preddesc_t dted_pred; /* predicate description */
|
|
dtrace_probedesc_t dted_probe; /* probe description */
|
|
uint64_t dted_uarg; /* library argument */
|
|
int dted_refcnt; /* reference count */
|
|
uint64_t dted_probegen; /* matched probe generation */
|
|
} dtrace_ecbdesc_t;
|
|
|
|
/*
|
|
* APPLE NOTE: The kernel always rebuild dtrace_ecbdesc structures
|
|
* coming from userspace, so there is no dted_probegen manipulation risk
|
|
*/
|
|
|
|
/*
|
|
* DTrace Metadata Description Structures
|
|
*
|
|
* DTrace separates the trace data stream from the metadata stream. The only
|
|
* metadata tokens placed in the data stream are the dtrace_rechdr_t (EPID +
|
|
* timestamp) or (in the case of aggregations) aggregation identifiers. To
|
|
* determine the structure of the data, DTrace consumers pass the token to the
|
|
* kernel, and receive in return a corresponding description of the enabled
|
|
* probe (via the dtrace_eprobedesc structure) or the aggregation (via the
|
|
* dtrace_aggdesc structure). Both of these structures are expressed in terms
|
|
* of record descriptions (via the dtrace_recdesc structure) that describe the
|
|
* exact structure of the data. Some record descriptions may also contain a
|
|
* format identifier; this additional bit of metadata can be retrieved from the
|
|
* kernel, for which a format description is returned via the dtrace_fmtdesc
|
|
* structure. Note that all four of these structures must be bitness-neutral
|
|
* to allow for a 32-bit DTrace consumer on a 64-bit kernel.
|
|
*/
|
|
typedef struct dtrace_recdesc {
|
|
dtrace_actkind_t dtrd_action; /* kind of action */
|
|
uint32_t dtrd_size; /* size of record */
|
|
uint32_t dtrd_offset; /* offset in ECB's data */
|
|
uint16_t dtrd_alignment; /* required alignment */
|
|
uint16_t dtrd_format; /* format, if any */
|
|
uint64_t dtrd_arg; /* action argument */
|
|
uint64_t dtrd_uarg; /* user argument */
|
|
} dtrace_recdesc_t;
|
|
|
|
typedef struct dtrace_eprobedesc {
|
|
dtrace_epid_t dtepd_epid; /* enabled probe ID */
|
|
dtrace_id_t dtepd_probeid; /* probe ID */
|
|
uint64_t dtepd_uarg; /* library argument */
|
|
uint32_t dtepd_size; /* total size */
|
|
int dtepd_nrecs; /* number of records */
|
|
dtrace_recdesc_t dtepd_rec[1]; /* records themselves */
|
|
} dtrace_eprobedesc_t;
|
|
|
|
typedef struct dtrace_aggdesc {
|
|
DTRACE_PTR(char, dtagd_name); /* not filled in by kernel */
|
|
dtrace_aggvarid_t dtagd_varid; /* not filled in by kernel */
|
|
int dtagd_flags; /* not filled in by kernel */
|
|
dtrace_aggid_t dtagd_id; /* aggregation ID */
|
|
dtrace_epid_t dtagd_epid; /* enabled probe ID */
|
|
uint32_t dtagd_size; /* size in bytes */
|
|
int dtagd_nrecs; /* number of records */
|
|
uint32_t dtagd_pad; /* explicit padding */
|
|
dtrace_recdesc_t dtagd_rec[1]; /* record descriptions */
|
|
} dtrace_aggdesc_t;
|
|
|
|
typedef struct dtrace_fmtdesc {
|
|
DTRACE_PTR(char, dtfd_string); /* format string */
|
|
int dtfd_length; /* length of format string */
|
|
uint16_t dtfd_format; /* format identifier */
|
|
} dtrace_fmtdesc_t;
|
|
|
|
#define DTRACE_SIZEOF_EPROBEDESC(desc) \
|
|
(sizeof (dtrace_eprobedesc_t) + ((desc)->dtepd_nrecs ? \
|
|
(((desc)->dtepd_nrecs - 1) * sizeof (dtrace_recdesc_t)) : 0))
|
|
|
|
#define DTRACE_SIZEOF_AGGDESC(desc) \
|
|
(sizeof (dtrace_aggdesc_t) + ((desc)->dtagd_nrecs ? \
|
|
(((desc)->dtagd_nrecs - 1) * sizeof (dtrace_recdesc_t)) : 0))
|
|
|
|
/*
|
|
* DTrace Option Interface
|
|
*
|
|
* Run-time DTrace options are set and retrieved via DOF_SECT_OPTDESC sections
|
|
* in a DOF image. The dof_optdesc structure contains an option identifier and
|
|
* an option value. The valid option identifiers are found below; the mapping
|
|
* between option identifiers and option identifying strings is maintained at
|
|
* user-level. Note that the value of DTRACEOPT_UNSET is such that all of the
|
|
* following are potentially valid option values: all positive integers, zero
|
|
* and negative one. Some options (notably "bufpolicy" and "bufresize") take
|
|
* predefined tokens as their values; these are defined with
|
|
* DTRACEOPT_{option}_{token}.
|
|
*/
|
|
#define DTRACEOPT_BUFSIZE 0 /* buffer size */
|
|
#define DTRACEOPT_BUFPOLICY 1 /* buffer policy */
|
|
#define DTRACEOPT_DYNVARSIZE 2 /* dynamic variable size */
|
|
#define DTRACEOPT_AGGSIZE 3 /* aggregation size */
|
|
#define DTRACEOPT_SPECSIZE 4 /* speculation size */
|
|
#define DTRACEOPT_NSPEC 5 /* number of speculations */
|
|
#define DTRACEOPT_STRSIZE 6 /* string size */
|
|
#define DTRACEOPT_CLEANRATE 7 /* dynvar cleaning rate */
|
|
#define DTRACEOPT_CPU 8 /* CPU to trace */
|
|
#define DTRACEOPT_BUFRESIZE 9 /* buffer resizing policy */
|
|
#define DTRACEOPT_GRABANON 10 /* grab anonymous state, if any */
|
|
#define DTRACEOPT_FLOWINDENT 11 /* indent function entry/return */
|
|
#define DTRACEOPT_QUIET 12 /* only output explicitly traced data */
|
|
#define DTRACEOPT_STACKFRAMES 13 /* number of stack frames */
|
|
#define DTRACEOPT_USTACKFRAMES 14 /* number of user stack frames */
|
|
#define DTRACEOPT_AGGRATE 15 /* aggregation snapshot rate */
|
|
#define DTRACEOPT_SWITCHRATE 16 /* buffer switching rate */
|
|
#define DTRACEOPT_STATUSRATE 17 /* status rate */
|
|
#define DTRACEOPT_DESTRUCTIVE 18 /* destructive actions allowed */
|
|
#define DTRACEOPT_STACKINDENT 19 /* output indent for stack traces */
|
|
#define DTRACEOPT_RAWBYTES 20 /* always print bytes in raw form */
|
|
#define DTRACEOPT_JSTACKFRAMES 21 /* number of jstack() frames */
|
|
#define DTRACEOPT_JSTACKSTRSIZE 22 /* size of jstack() string table */
|
|
#define DTRACEOPT_AGGSORTKEY 23 /* sort aggregations by key */
|
|
#define DTRACEOPT_AGGSORTREV 24 /* reverse-sort aggregations */
|
|
#define DTRACEOPT_AGGSORTPOS 25 /* agg. position to sort on */
|
|
#define DTRACEOPT_AGGSORTKEYPOS 26 /* agg. key position to sort on */
|
|
#define DTRACEOPT_AGGHIST 27 /* histogram aggregation output */
|
|
#define DTRACEOPT_AGGPACK 28 /* packed aggregation output */
|
|
#define DTRACEOPT_AGGZOOM 29 /* zoomed aggregation scaling */
|
|
#define DTRACEOPT_TEMPORAL 30 /* temporally ordered output */
|
|
#if !defined(__APPLE__)
|
|
#define DTRACEOPT_MAX 31 /* number of options */
|
|
#else
|
|
#define DTRACEOPT_STACKSYMBOLS 31 /* clear to prevent stack symbolication */
|
|
#define DTRACEOPT_BUFLIMIT 32 /* buffer signaling limit in % of the size */
|
|
#define DTRACEOPT_MAX 33 /* number of options */
|
|
#endif /* __APPLE__ */
|
|
|
|
#define DTRACEOPT_UNSET (dtrace_optval_t)-2 /* unset option */
|
|
|
|
#define DTRACEOPT_BUFPOLICY_RING 0 /* ring buffer */
|
|
#define DTRACEOPT_BUFPOLICY_FILL 1 /* fill buffer, then stop */
|
|
#define DTRACEOPT_BUFPOLICY_SWITCH 2 /* switch buffers */
|
|
|
|
#define DTRACEOPT_BUFRESIZE_AUTO 0 /* automatic resizing */
|
|
#define DTRACEOPT_BUFRESIZE_MANUAL 1 /* manual resizing */
|
|
|
|
/*
|
|
* DTrace Buffer Interface
|
|
*
|
|
* In order to get a snapshot of the principal or aggregation buffer,
|
|
* user-level passes a buffer description to the kernel with the dtrace_bufdesc
|
|
* structure. This describes which CPU user-level is interested in, and
|
|
* where user-level wishes the kernel to snapshot the buffer to (the
|
|
* dtbd_data field). The kernel uses the same structure to pass back some
|
|
* information regarding the buffer: the size of data actually copied out, the
|
|
* number of drops, the number of errors, the offset of the oldest record,
|
|
* and the time of the snapshot.
|
|
*
|
|
* If the buffer policy is a "switch" policy, taking a snapshot of the
|
|
* principal buffer has the additional effect of switching the active and
|
|
* inactive buffers. Taking a snapshot of the aggregation buffer _always_ has
|
|
* the additional effect of switching the active and inactive buffers.
|
|
*/
|
|
typedef struct dtrace_bufdesc {
|
|
uint64_t dtbd_size; /* size of buffer */
|
|
uint32_t dtbd_cpu; /* CPU or DTRACE_CPUALL */
|
|
uint32_t dtbd_errors; /* number of errors */
|
|
uint64_t dtbd_drops; /* number of drops */
|
|
DTRACE_PTR(char, dtbd_data); /* data */
|
|
uint64_t dtbd_oldest; /* offset of oldest record */
|
|
uint64_t dtbd_timestamp; /* hrtime of snapshot */
|
|
} dtrace_bufdesc_t;
|
|
|
|
/*
|
|
* Each record in the buffer (dtbd_data) begins with a header that includes
|
|
* the epid and a timestamp. The timestamp is split into two 4-byte parts
|
|
* so that we do not require 8-byte alignment.
|
|
*/
|
|
typedef struct dtrace_rechdr {
|
|
dtrace_epid_t dtrh_epid; /* enabled probe id */
|
|
uint32_t dtrh_timestamp_hi; /* high bits of hrtime_t */
|
|
uint32_t dtrh_timestamp_lo; /* low bits of hrtime_t */
|
|
} dtrace_rechdr_t;
|
|
|
|
#define DTRACE_RECORD_LOAD_TIMESTAMP(dtrh) \
|
|
((dtrh)->dtrh_timestamp_lo + \
|
|
((uint64_t)(dtrh)->dtrh_timestamp_hi << 32))
|
|
|
|
#define DTRACE_RECORD_STORE_TIMESTAMP(dtrh, hrtime) { \
|
|
(dtrh)->dtrh_timestamp_lo = (uint32_t)hrtime; \
|
|
(dtrh)->dtrh_timestamp_hi = hrtime >> 32; \
|
|
}
|
|
|
|
/*
|
|
* DTrace Status
|
|
*
|
|
* The status of DTrace is relayed via the dtrace_status structure. This
|
|
* structure contains members to count drops other than the capacity drops
|
|
* available via the buffer interface (see above). This consists of dynamic
|
|
* drops (including capacity dynamic drops, rinsing drops and dirty drops), and
|
|
* speculative drops (including capacity speculative drops, drops due to busy
|
|
* speculative buffers and drops due to unavailable speculative buffers).
|
|
* Additionally, the status structure contains a field to indicate the number
|
|
* of "fill"-policy buffers have been filled and a boolean field to indicate
|
|
* that exit() has been called. If the dtst_exiting field is non-zero, no
|
|
* further data will be generated until tracing is stopped (at which time any
|
|
* enablings of the END action will be processed); if user-level sees that
|
|
* this field is non-zero, tracing should be stopped as soon as possible.
|
|
*/
|
|
typedef struct dtrace_status {
|
|
uint64_t dtst_dyndrops; /* dynamic drops */
|
|
uint64_t dtst_dyndrops_rinsing; /* dyn drops due to rinsing */
|
|
uint64_t dtst_dyndrops_dirty; /* dyn drops due to dirty */
|
|
uint64_t dtst_specdrops; /* speculative drops */
|
|
uint64_t dtst_specdrops_busy; /* spec drops due to busy */
|
|
uint64_t dtst_specdrops_unavail; /* spec drops due to unavail */
|
|
uint64_t dtst_errors; /* total errors */
|
|
uint64_t dtst_filled; /* number of filled bufs */
|
|
uint64_t dtst_stkstroverflows; /* stack string tab overflows */
|
|
uint64_t dtst_dblerrors; /* errors in ERROR probes */
|
|
char dtst_killed; /* non-zero if killed */
|
|
char dtst_exiting; /* non-zero if exit() called */
|
|
char dtst_pad[6]; /* pad out to 64-bit align */
|
|
} dtrace_status_t;
|
|
|
|
/*
|
|
* DTrace Configuration
|
|
*
|
|
* User-level may need to understand some elements of the kernel DTrace
|
|
* configuration in order to generate correct DIF. This information is
|
|
* conveyed via the dtrace_conf structure.
|
|
*/
|
|
typedef struct dtrace_conf {
|
|
uint_t dtc_difversion; /* supported DIF version */
|
|
uint_t dtc_difintregs; /* # of DIF integer registers */
|
|
uint_t dtc_diftupregs; /* # of DIF tuple registers */
|
|
uint_t dtc_ctfmodel; /* CTF data model */
|
|
uint_t dtc_pad[8]; /* reserved for future use */
|
|
} dtrace_conf_t;
|
|
|
|
/*
|
|
* DTrace Faults
|
|
*
|
|
* The constants below DTRACEFLT_LIBRARY indicate probe processing faults;
|
|
* constants at or above DTRACEFLT_LIBRARY indicate faults in probe
|
|
* postprocessing at user-level. Probe processing faults induce an ERROR
|
|
* probe and are replicated in unistd.d to allow users' ERROR probes to decode
|
|
* the error condition using thse symbolic labels.
|
|
*/
|
|
#define DTRACEFLT_UNKNOWN 0 /* Unknown fault */
|
|
#define DTRACEFLT_BADADDR 1 /* Bad address */
|
|
#define DTRACEFLT_BADALIGN 2 /* Bad alignment */
|
|
#define DTRACEFLT_ILLOP 3 /* Illegal operation */
|
|
#define DTRACEFLT_DIVZERO 4 /* Divide-by-zero */
|
|
#define DTRACEFLT_NOSCRATCH 5 /* Out of scratch space */
|
|
#define DTRACEFLT_KPRIV 6 /* Illegal kernel access */
|
|
#define DTRACEFLT_UPRIV 7 /* Illegal user access */
|
|
#define DTRACEFLT_TUPOFLOW 8 /* Tuple stack overflow */
|
|
#define DTRACEFLT_BADSTACK 9 /* Bad stack */
|
|
|
|
#define DTRACEFLT_LIBRARY 1000 /* Library-level fault */
|
|
|
|
/*
|
|
* DTrace Argument Types
|
|
*
|
|
* Because it would waste both space and time, argument types do not reside
|
|
* with the probe. In order to determine argument types for args[X]
|
|
* variables, the D compiler queries for argument types on a probe-by-probe
|
|
* basis. (This optimizes for the common case that arguments are either not
|
|
* used or used in an untyped fashion.) Typed arguments are specified with a
|
|
* string of the type name in the dtragd_native member of the argument
|
|
* description structure. Typed arguments may be further translated to types
|
|
* of greater stability; the provider indicates such a translated argument by
|
|
* filling in the dtargd_xlate member with the string of the translated type.
|
|
* Finally, the provider may indicate which argument value a given argument
|
|
* maps to by setting the dtargd_mapping member -- allowing a single argument
|
|
* to map to multiple args[X] variables.
|
|
*/
|
|
typedef struct dtrace_argdesc {
|
|
dtrace_id_t dtargd_id; /* probe identifier */
|
|
int dtargd_ndx; /* arg number (-1 iff none) */
|
|
int dtargd_mapping; /* value mapping */
|
|
char dtargd_native[DTRACE_ARGTYPELEN]; /* native type name */
|
|
char dtargd_xlate[DTRACE_ARGTYPELEN]; /* translated type name */
|
|
} dtrace_argdesc_t;
|
|
|
|
/*
|
|
* DTrace Stability Attributes
|
|
*
|
|
* Each DTrace provider advertises the name and data stability of each of its
|
|
* probe description components, as well as its architectural dependencies.
|
|
* The D compiler can query the provider attributes (dtrace_pattr_t below) in
|
|
* order to compute the properties of an input program and report them.
|
|
*/
|
|
typedef uint8_t dtrace_stability_t; /* stability code (see attributes(5)) */
|
|
typedef uint8_t dtrace_class_t; /* architectural dependency class */
|
|
|
|
#define DTRACE_STABILITY_INTERNAL 0 /* private to DTrace itself */
|
|
#define DTRACE_STABILITY_PRIVATE 1 /* private to Sun (see docs) */
|
|
#define DTRACE_STABILITY_OBSOLETE 2 /* scheduled for removal */
|
|
#define DTRACE_STABILITY_EXTERNAL 3 /* not controlled by Sun */
|
|
#define DTRACE_STABILITY_UNSTABLE 4 /* new or rapidly changing */
|
|
#define DTRACE_STABILITY_EVOLVING 5 /* less rapidly changing */
|
|
#define DTRACE_STABILITY_STABLE 6 /* mature interface from Sun */
|
|
#define DTRACE_STABILITY_STANDARD 7 /* industry standard */
|
|
#define DTRACE_STABILITY_MAX 7 /* maximum valid stability */
|
|
|
|
#define DTRACE_CLASS_UNKNOWN 0 /* unknown architectural dependency */
|
|
#define DTRACE_CLASS_CPU 1 /* CPU-module-specific */
|
|
#define DTRACE_CLASS_PLATFORM 2 /* platform-specific (uname -i) */
|
|
#define DTRACE_CLASS_GROUP 3 /* hardware-group-specific (uname -m) */
|
|
#define DTRACE_CLASS_ISA 4 /* ISA-specific (uname -p) */
|
|
#define DTRACE_CLASS_COMMON 5 /* common to all systems */
|
|
#define DTRACE_CLASS_MAX 5 /* maximum valid class */
|
|
|
|
#define DTRACE_PRIV_NONE 0x0000
|
|
#define DTRACE_PRIV_KERNEL 0x0001
|
|
#define DTRACE_PRIV_USER 0x0002
|
|
#define DTRACE_PRIV_PROC 0x0004
|
|
#define DTRACE_PRIV_OWNER 0x0008
|
|
#define DTRACE_PRIV_ZONEOWNER 0x0010
|
|
|
|
#define DTRACE_PRIV_ALL \
|
|
(DTRACE_PRIV_KERNEL | DTRACE_PRIV_USER | \
|
|
DTRACE_PRIV_PROC | DTRACE_PRIV_OWNER | DTRACE_PRIV_ZONEOWNER)
|
|
|
|
typedef struct dtrace_ppriv {
|
|
uint32_t dtpp_flags; /* privilege flags */
|
|
uid_t dtpp_uid; /* user ID */
|
|
zoneid_t dtpp_zoneid; /* zone ID */
|
|
} dtrace_ppriv_t;
|
|
|
|
typedef struct dtrace_attribute {
|
|
dtrace_stability_t dtat_name; /* entity name stability */
|
|
dtrace_stability_t dtat_data; /* entity data stability */
|
|
dtrace_class_t dtat_class; /* entity data dependency */
|
|
} dtrace_attribute_t;
|
|
|
|
typedef struct dtrace_pattr {
|
|
dtrace_attribute_t dtpa_provider; /* provider attributes */
|
|
dtrace_attribute_t dtpa_mod; /* module attributes */
|
|
dtrace_attribute_t dtpa_func; /* function attributes */
|
|
dtrace_attribute_t dtpa_name; /* name attributes */
|
|
dtrace_attribute_t dtpa_args; /* args[] attributes */
|
|
} dtrace_pattr_t;
|
|
|
|
typedef struct dtrace_providerdesc {
|
|
char dtvd_name[DTRACE_PROVNAMELEN]; /* provider name */
|
|
dtrace_pattr_t dtvd_attr; /* stability attributes */
|
|
dtrace_ppriv_t dtvd_priv; /* privileges required */
|
|
} dtrace_providerdesc_t;
|
|
|
|
/*
|
|
* DTrace Pseudodevice Interface
|
|
*
|
|
* DTrace is controlled through ioctl(2)'s to the in-kernel dtrace:dtrace
|
|
* pseudodevice driver. These ioctls comprise the user-kernel interface to
|
|
* DTrace.
|
|
*/
|
|
#if !defined(__APPLE__)
|
|
#define DTRACEIOC (('d' << 24) | ('t' << 16) | ('r' << 8))
|
|
#define DTRACEIOC_PROVIDER (DTRACEIOC | 1) /* provider query */
|
|
#define DTRACEIOC_PROBES (DTRACEIOC | 2) /* probe query */
|
|
#define DTRACEIOC_BUFSNAP (DTRACEIOC | 4) /* snapshot buffer */
|
|
#define DTRACEIOC_PROBEMATCH (DTRACEIOC | 5) /* match probes */
|
|
#define DTRACEIOC_ENABLE (DTRACEIOC | 6) /* enable probes */
|
|
#define DTRACEIOC_AGGSNAP (DTRACEIOC | 7) /* snapshot agg. */
|
|
#define DTRACEIOC_EPROBE (DTRACEIOC | 8) /* get eprobe desc. */
|
|
#define DTRACEIOC_PROBEARG (DTRACEIOC | 9) /* get probe arg */
|
|
#define DTRACEIOC_CONF (DTRACEIOC | 10) /* get config. */
|
|
#define DTRACEIOC_STATUS (DTRACEIOC | 11) /* get status */
|
|
#define DTRACEIOC_GO (DTRACEIOC | 12) /* start tracing */
|
|
#define DTRACEIOC_STOP (DTRACEIOC | 13) /* stop tracing */
|
|
#define DTRACEIOC_AGGDESC (DTRACEIOC | 15) /* get agg. desc. */
|
|
#define DTRACEIOC_FORMAT (DTRACEIOC | 16) /* get format str */
|
|
#define DTRACEIOC_DOFGET (DTRACEIOC | 17) /* get DOF */
|
|
#define DTRACEIOC_REPLICATE (DTRACEIOC | 18) /* replicate enab */
|
|
#else
|
|
/* coding this as IOC_VOID allows this driver to handle its own copyin/copuout */
|
|
#define DTRACEIOC _IO('d',0)
|
|
#define DTRACEIOC_PROVIDER (DTRACEIOC | 1) /* provider query */
|
|
#define DTRACEIOC_PROBES (DTRACEIOC | 2) /* probe query */
|
|
#define DTRACEIOC_BUFSNAP (DTRACEIOC | 4) /* snapshot buffer */
|
|
#define DTRACEIOC_PROBEMATCH (DTRACEIOC | 5) /* match probes */
|
|
#define DTRACEIOC_ENABLE (DTRACEIOC | 6) /* enable probes */
|
|
#define DTRACEIOC_AGGSNAP (DTRACEIOC | 7) /* snapshot agg. */
|
|
#define DTRACEIOC_EPROBE (DTRACEIOC | 8) /* get eprobe desc. */
|
|
#define DTRACEIOC_PROBEARG (DTRACEIOC | 9) /* get probe arg */
|
|
#define DTRACEIOC_CONF (DTRACEIOC | 10) /* get config. */
|
|
#define DTRACEIOC_STATUS (DTRACEIOC | 11) /* get status */
|
|
#define DTRACEIOC_GO (DTRACEIOC | 12) /* start tracing */
|
|
#define DTRACEIOC_STOP (DTRACEIOC | 13) /* stop tracing */
|
|
#define DTRACEIOC_AGGDESC (DTRACEIOC | 15) /* get agg. desc. */
|
|
#define DTRACEIOC_FORMAT (DTRACEIOC | 16) /* get format str */
|
|
#define DTRACEIOC_DOFGET (DTRACEIOC | 17) /* get DOF */
|
|
#define DTRACEIOC_REPLICATE (DTRACEIOC | 18) /* replicate enab */
|
|
#define DTRACEIOC_MODUUIDSLIST (DTRACEIOC | 30) /* APPLE ONLY, query for modules with missing symbols */
|
|
#define DTRACEIOC_PROVMODSYMS (DTRACEIOC | 31) /* APPLE ONLY, provide missing symbols for a given module */
|
|
#define DTRACEIOC_PROCWAITFOR (DTRACEIOC | 32) /* APPLE ONLY, wait for process exec */
|
|
#define DTRACEIOC_SLEEP (DTRACEIOC | 33) /* APPLE ONLY, sleep */
|
|
#define DTRACEIOC_SIGNAL (DTRACEIOC | 34) /* APPLE ONLY, signal sleeping process */
|
|
|
|
/*
|
|
* The following structs are used to provide symbol information to the kernel from userspace.
|
|
*/
|
|
|
|
typedef struct dtrace_symbol {
|
|
uint64_t dtsym_addr; /* address of the symbol */
|
|
uint64_t dtsym_size; /* size of the symbol, must be uint64_t to maintain alignment when called by 64b uproc in i386 kernel */
|
|
char dtsym_name[DTRACE_FUNCNAMELEN]; /* symbol name */
|
|
} dtrace_symbol_t;
|
|
|
|
typedef struct dtrace_module_symbols {
|
|
UUID dtmodsyms_uuid;
|
|
uint64_t dtmodsyms_count;
|
|
dtrace_symbol_t dtmodsyms_symbols[1];
|
|
} dtrace_module_symbols_t;
|
|
|
|
/*
|
|
* Safely compute the size in bytes of space we need to copyin module's symbols from userspace.
|
|
* Assumes that count has been checked to be at least 1.
|
|
*/
|
|
#define DTRACE_MODULE_SYMBOLS_SIZE(count) ({\
|
|
size_t _sym_count = (size_t)(count - 1); \
|
|
size_t _buf_size = 0; \
|
|
if (os_mul_and_add_overflow(_sym_count, \
|
|
sizeof(dtrace_symbol_t), \
|
|
sizeof(dtrace_module_symbols_t), \
|
|
&_buf_size)) { \
|
|
_buf_size = 0; \
|
|
} \
|
|
_buf_size; })
|
|
|
|
typedef struct dtrace_module_uuids_list {
|
|
uint64_t dtmul_count;
|
|
UUID dtmul_uuid[1];
|
|
} dtrace_module_uuids_list_t;
|
|
|
|
#define DTRACE_MODULE_UUIDS_LIST_SIZE(count) (sizeof(dtrace_module_uuids_list_t) + ((count - 1) * sizeof(UUID)))
|
|
|
|
typedef struct dtrace_procdesc {
|
|
/* Must be specified by user-space */
|
|
char p_name[128];
|
|
/* Set or modified by the Kernel */
|
|
int p_name_length;
|
|
pid_t p_pid;
|
|
} dtrace_procdesc_t;
|
|
|
|
/**
|
|
* DTrace wake reasons.
|
|
* This is used in userspace to determine what's the reason why it woke up,
|
|
* to start aggregating / switching buffer right away if it is because a buffer
|
|
* got over its limit
|
|
*/
|
|
#define DTRACE_WAKE_TIMEOUT 0 /* dtrace client woke up because of a timeout */
|
|
#define DTRACE_WAKE_BUF_LIMIT 1 /* dtrace client woke up because of a over limit buffer */
|
|
|
|
#endif /* __APPLE__ */
|
|
|
|
/*
|
|
* DTrace Helpers
|
|
*
|
|
* In general, DTrace establishes probes in processes and takes actions on
|
|
* processes without knowing their specific user-level structures. Instead of
|
|
* existing in the framework, process-specific knowledge is contained by the
|
|
* enabling D program -- which can apply process-specific knowledge by making
|
|
* appropriate use of DTrace primitives like copyin() and copyinstr() to
|
|
* operate on user-level data. However, there may exist some specific probes
|
|
* of particular semantic relevance that the application developer may wish to
|
|
* explicitly export. For example, an application may wish to export a probe
|
|
* at the point that it begins and ends certain well-defined transactions. In
|
|
* addition to providing probes, programs may wish to offer assistance for
|
|
* certain actions. For example, in highly dynamic environments (e.g., Java),
|
|
* it may be difficult to obtain a stack trace in terms of meaningful symbol
|
|
* names (the translation from instruction addresses to corresponding symbol
|
|
* names may only be possible in situ); these environments may wish to define
|
|
* a series of actions to be applied in situ to obtain a meaningful stack
|
|
* trace.
|
|
*
|
|
* These two mechanisms -- user-level statically defined tracing and assisting
|
|
* DTrace actions -- are provided via DTrace _helpers_. Helpers are specified
|
|
* via DOF, but unlike enabling DOF, helper DOF may contain definitions of
|
|
* providers, probes and their arguments. If a helper wishes to provide
|
|
* action assistance, probe descriptions and corresponding DIF actions may be
|
|
* specified in the helper DOF. For such helper actions, however, the probe
|
|
* description describes the specific helper: all DTrace helpers have the
|
|
* provider name "dtrace" and the module name "helper", and the name of the
|
|
* helper is contained in the function name (for example, the ustack() helper
|
|
* is named "ustack"). Any helper-specific name may be contained in the name
|
|
* (for example, if a helper were to have a constructor, it might be named
|
|
* "dtrace:helper:<helper>:init"). Helper actions are only called when the
|
|
* action that they are helping is taken. Helper actions may only return DIF
|
|
* expressions, and may only call the following subroutines:
|
|
*
|
|
* alloca() <= Allocates memory out of the consumer's scratch space
|
|
* bcopy() <= Copies memory to scratch space
|
|
* copyin() <= Copies memory from user-level into consumer's scratch
|
|
* copyinto() <= Copies memory into a specific location in scratch
|
|
* copyinstr() <= Copies a string into a specific location in scratch
|
|
*
|
|
* Helper actions may only access the following built-in variables:
|
|
*
|
|
* curthread <= Current kthread_t pointer
|
|
* tid <= Current thread identifier
|
|
* pid <= Current process identifier
|
|
* ppid <= Parent process identifier
|
|
* uid <= Current user ID
|
|
* gid <= Current group ID
|
|
* execname <= Current executable name
|
|
* zonename <= Current zone name
|
|
*
|
|
* Helper actions may not manipulate or allocate dynamic variables, but they
|
|
* may have clause-local and statically-allocated global variables. The
|
|
* helper action variable state is specific to the helper action -- variables
|
|
* used by the helper action may not be accessed outside of the helper
|
|
* action, and the helper action may not access variables that like outside
|
|
* of it. Helper actions may not load from kernel memory at-large; they are
|
|
* restricting to loading current user state (via copyin() and variants) and
|
|
* scratch space. As with probe enablings, helper actions are executed in
|
|
* program order. The result of the helper action is the result of the last
|
|
* executing helper expression.
|
|
*
|
|
* Helpers -- composed of either providers/probes or probes/actions (or both)
|
|
* -- are added by opening the "helper" minor node, and issuing an ioctl(2)
|
|
* (DTRACEHIOC_ADDDOF) that specifies the dof_helper_t structure. This
|
|
* encapsulates the name and base address of the user-level library or
|
|
* executable publishing the helpers and probes as well as the DOF that
|
|
* contains the definitions of those helpers and probes.
|
|
*
|
|
* The DTRACEHIOC_ADD and DTRACEHIOC_REMOVE are left in place for legacy
|
|
* helpers and should no longer be used. No other ioctls are valid on the
|
|
* helper minor node.
|
|
*/
|
|
#if !defined(__APPLE__)
|
|
#define DTRACEHIOC (('d' << 24) | ('t' << 16) | ('h' << 8))
|
|
#define DTRACEHIOC_ADD (DTRACEHIOC | 1) /* add helper */
|
|
#define DTRACEHIOC_REMOVE (DTRACEHIOC | 2) /* remove helper */
|
|
#define DTRACEHIOC_ADDDOF (DTRACEHIOC | 3) /* add helper DOF */
|
|
#else
|
|
#define DTRACEHIOC_REMOVE _IO('h', 2) /* remove helper */
|
|
#define DTRACEHIOC_ADDDOF _IOW('h', 4, user_addr_t) /* add helper DOF */
|
|
#endif /* __APPLE__ */
|
|
|
|
typedef struct dof_helper {
|
|
char dofhp_mod[DTRACE_MODNAMELEN]; /* executable or library name */
|
|
uint64_t dofhp_addr; /* base address of object */
|
|
uint64_t dofhp_dof; /* address of helper DOF */
|
|
} dof_helper_t;
|
|
|
|
#if defined(__APPLE__)
|
|
/*
|
|
* This structure is used to register one or more dof_helper_t(s).
|
|
* For counts greater than one, malloc the structure as if the
|
|
* dofiod_helpers field was "count" sized. The kernel will copyin
|
|
* data of size:
|
|
*
|
|
* sizeof(dof_ioctl_data_t) + ((count - 1) * sizeof(dof_helper_t))
|
|
*/
|
|
typedef struct dof_ioctl_data {
|
|
/*
|
|
* This field must be 64 bits to keep the alignment the same
|
|
* when 64 bit user procs are sending data to 32 bit xnu
|
|
*/
|
|
uint64_t dofiod_count;
|
|
dof_helper_t dofiod_helpers[1];
|
|
} dof_ioctl_data_t;
|
|
|
|
#define DOF_IOCTL_DATA_T_SIZE(count) (sizeof(dof_ioctl_data_t) + ((count - 1) * sizeof(dof_helper_t)))
|
|
|
|
#endif
|
|
|
|
#define DTRACEMNR_DTRACE "dtrace" /* node for DTrace ops */
|
|
#if !defined(__APPLE__)
|
|
#define DTRACEMNR_HELPER "helper" /* node for helpers */
|
|
#else
|
|
#define DTRACEMNR_HELPER "dtracehelper" /* node for helpers */
|
|
#endif /* __APPLE__ */
|
|
#define DTRACEMNRN_DTRACE 0 /* minor for DTrace ops */
|
|
#define DTRACEMNRN_HELPER 1 /* minor for helpers */
|
|
#define DTRACEMNRN_CLONE 2 /* first clone minor */
|
|
|
|
#ifdef _KERNEL
|
|
|
|
/*
|
|
* DTrace Provider API
|
|
*
|
|
* The following functions are implemented by the DTrace framework and are
|
|
* used to implement separate in-kernel DTrace providers. Common functions
|
|
* are provided in uts/common/os/dtrace.c. ISA-dependent subroutines are
|
|
* defined in uts/<isa>/dtrace/dtrace_asm.s or uts/<isa>/dtrace/dtrace_isa.c.
|
|
*
|
|
* The provider API has two halves: the API that the providers consume from
|
|
* DTrace, and the API that providers make available to DTrace.
|
|
*
|
|
* 1 Framework-to-Provider API
|
|
*
|
|
* 1.1 Overview
|
|
*
|
|
* The Framework-to-Provider API is represented by the dtrace_pops structure
|
|
* that the provider passes to the framework when registering itself. This
|
|
* structure consists of the following members:
|
|
*
|
|
* dtps_provide() <-- Provide all probes, all modules
|
|
* dtps_provide_module() <-- Provide all probes in specified module
|
|
* dtps_enable() <-- Enable specified probe
|
|
* dtps_disable() <-- Disable specified probe
|
|
* dtps_suspend() <-- Suspend specified probe
|
|
* dtps_resume() <-- Resume specified probe
|
|
* dtps_getargdesc() <-- Get the argument description for args[X]
|
|
* dtps_getargval() <-- Get the value for an argX or args[X] variable
|
|
* dtps_usermode() <-- Find out if the probe was fired in user mode
|
|
* dtps_destroy() <-- Destroy all state associated with this probe
|
|
*
|
|
* 1.2 void dtps_provide(void *arg, const dtrace_probedesc_t *spec)
|
|
*
|
|
* 1.2.1 Overview
|
|
*
|
|
* Called to indicate that the provider should provide all probes. If the
|
|
* specified description is non-NULL, dtps_provide() is being called because
|
|
* no probe matched a specified probe -- if the provider has the ability to
|
|
* create custom probes, it may wish to create a probe that matches the
|
|
* specified description.
|
|
*
|
|
* 1.2.2 Arguments and notes
|
|
*
|
|
* The first argument is the cookie as passed to dtrace_register(). The
|
|
* second argument is a pointer to a probe description that the provider may
|
|
* wish to consider when creating custom probes. The provider is expected to
|
|
* call back into the DTrace framework via dtrace_probe_create() to create
|
|
* any necessary probes. dtps_provide() may be called even if the provider
|
|
* has made available all probes; the provider should check the return value
|
|
* of dtrace_probe_create() to handle this case. Note that the provider need
|
|
* not implement both dtps_provide() and dtps_provide_module(); see
|
|
* "Arguments and Notes" for dtrace_register(), below.
|
|
*
|
|
* 1.2.3 Return value
|
|
*
|
|
* None.
|
|
*
|
|
* 1.2.4 Caller's context
|
|
*
|
|
* dtps_provide() is typically called from open() or ioctl() context, but may
|
|
* be called from other contexts as well. The DTrace framework is locked in
|
|
* such a way that providers may not register or unregister. This means that
|
|
* the provider may not call any DTrace API that affects its registration with
|
|
* the framework, including dtrace_register(), dtrace_unregister(),
|
|
* dtrace_invalidate(), and dtrace_condense(). However, the context is such
|
|
* that the provider may (and indeed, is expected to) call probe-related
|
|
* DTrace routines, including dtrace_probe_create(), dtrace_probe_lookup(),
|
|
* and dtrace_probe_arg().
|
|
*
|
|
* 1.3 void dtps_provide_module(void *arg, struct modctl *mp)
|
|
*
|
|
* 1.3.1 Overview
|
|
*
|
|
* Called to indicate that the provider should provide all probes in the
|
|
* specified module.
|
|
*
|
|
* 1.3.2 Arguments and notes
|
|
*
|
|
* The first argument is the cookie as passed to dtrace_register(). The
|
|
* second argument is a pointer to a modctl structure that indicates the
|
|
* module for which probes should be created.
|
|
*
|
|
* 1.3.3 Return value
|
|
*
|
|
* None.
|
|
*
|
|
* 1.3.4 Caller's context
|
|
*
|
|
* dtps_provide_module() may be called from open() or ioctl() context, but
|
|
* may also be called from a module loading context. mod_lock is held, and
|
|
* the DTrace framework is locked in such a way that providers may not
|
|
* register or unregister. This means that the provider may not call any
|
|
* DTrace API that affects its registration with the framework, including
|
|
* dtrace_register(), dtrace_unregister(), dtrace_invalidate(), and
|
|
* dtrace_condense(). However, the context is such that the provider may (and
|
|
* indeed, is expected to) call probe-related DTrace routines, including
|
|
* dtrace_probe_create(), dtrace_probe_lookup(), and dtrace_probe_arg(). Note
|
|
* that the provider need not implement both dtps_provide() and
|
|
* dtps_provide_module(); see "Arguments and Notes" for dtrace_register(),
|
|
* below.
|
|
*
|
|
* 1.4 int dtps_enable(void *arg, dtrace_id_t id, void *parg)
|
|
*
|
|
* 1.4.1 Overview
|
|
*
|
|
* Called to enable the specified probe.
|
|
*
|
|
* 1.4.2 Arguments and notes
|
|
*
|
|
* The first argument is the cookie as passed to dtrace_register(). The
|
|
* second argument is the identifier of the probe to be enabled. The third
|
|
* argument is the probe argument as passed to dtrace_probe_create().
|
|
* dtps_enable() will be called when a probe transitions from not being
|
|
* enabled at all to having one or more ECB. The number of ECBs associated
|
|
* with the probe may change without subsequent calls into the provider.
|
|
* When the number of ECBs drops to zero, the provider will be explicitly
|
|
* told to disable the probe via dtps_disable(). dtrace_probe() should never
|
|
* be called for a probe identifier that hasn't been explicitly enabled via
|
|
* dtps_enable().
|
|
*
|
|
* 1.4.3 Return value
|
|
*
|
|
* On success, dtps_enable() should return 0. On failure, -1 should be
|
|
* returned.
|
|
*
|
|
* 1.4.4 Caller's context
|
|
*
|
|
* The DTrace framework is locked in such a way that it may not be called
|
|
* back into at all. cpu_lock is held. mod_lock is not held and may not
|
|
* be acquired.
|
|
*
|
|
* 1.5 void dtps_disable(void *arg, dtrace_id_t id, void *parg)
|
|
*
|
|
* 1.5.1 Overview
|
|
*
|
|
* Called to disable the specified probe.
|
|
*
|
|
* 1.5.2 Arguments and notes
|
|
*
|
|
* The first argument is the cookie as passed to dtrace_register(). The
|
|
* second argument is the identifier of the probe to be disabled. The third
|
|
* argument is the probe argument as passed to dtrace_probe_create().
|
|
* dtps_disable() will be called when a probe transitions from being enabled
|
|
* to having zero ECBs. dtrace_probe() should never be called for a probe
|
|
* identifier that has been explicitly enabled via dtps_disable().
|
|
*
|
|
* 1.5.3 Return value
|
|
*
|
|
* None.
|
|
*
|
|
* 1.5.4 Caller's context
|
|
*
|
|
* The DTrace framework is locked in such a way that it may not be called
|
|
* back into at all. cpu_lock is held. mod_lock is not held and may not
|
|
* be acquired.
|
|
*
|
|
* 1.6 void dtps_suspend(void *arg, dtrace_id_t id, void *parg)
|
|
*
|
|
* 1.6.1 Overview
|
|
*
|
|
* Called to suspend the specified enabled probe. This entry point is for
|
|
* providers that may need to suspend some or all of their probes when CPUs
|
|
* are being powered on or when the boot monitor is being entered for a
|
|
* prolonged period of time.
|
|
*
|
|
* 1.6.2 Arguments and notes
|
|
*
|
|
* The first argument is the cookie as passed to dtrace_register(). The
|
|
* second argument is the identifier of the probe to be suspended. The
|
|
* third argument is the probe argument as passed to dtrace_probe_create().
|
|
* dtps_suspend will only be called on an enabled probe. Providers that
|
|
* provide a dtps_suspend entry point will want to take roughly the action
|
|
* that it takes for dtps_disable.
|
|
*
|
|
* 1.6.3 Return value
|
|
*
|
|
* None.
|
|
*
|
|
* 1.6.4 Caller's context
|
|
*
|
|
* Interrupts are disabled. The DTrace framework is in a state such that the
|
|
* specified probe cannot be disabled or destroyed for the duration of
|
|
* dtps_suspend(). As interrupts are disabled, the provider is afforded
|
|
* little latitude; the provider is expected to do no more than a store to
|
|
* memory.
|
|
*
|
|
* 1.7 void dtps_resume(void *arg, dtrace_id_t id, void *parg)
|
|
*
|
|
* 1.7.1 Overview
|
|
*
|
|
* Called to resume the specified enabled probe. This entry point is for
|
|
* providers that may need to resume some or all of their probes after the
|
|
* completion of an event that induced a call to dtps_suspend().
|
|
*
|
|
* 1.7.2 Arguments and notes
|
|
*
|
|
* The first argument is the cookie as passed to dtrace_register(). The
|
|
* second argument is the identifier of the probe to be resumed. The
|
|
* third argument is the probe argument as passed to dtrace_probe_create().
|
|
* dtps_resume will only be called on an enabled probe. Providers that
|
|
* provide a dtps_resume entry point will want to take roughly the action
|
|
* that it takes for dtps_enable.
|
|
*
|
|
* 1.7.3 Return value
|
|
*
|
|
* None.
|
|
*
|
|
* 1.7.4 Caller's context
|
|
*
|
|
* Interrupts are disabled. The DTrace framework is in a state such that the
|
|
* specified probe cannot be disabled or destroyed for the duration of
|
|
* dtps_resume(). As interrupts are disabled, the provider is afforded
|
|
* little latitude; the provider is expected to do no more than a store to
|
|
* memory.
|
|
*
|
|
* 1.8 void dtps_getargdesc(void *arg, dtrace_id_t id, void *parg,
|
|
* dtrace_argdesc_t *desc)
|
|
*
|
|
* 1.8.1 Overview
|
|
*
|
|
* Called to retrieve the argument description for an args[X] variable.
|
|
*
|
|
* 1.8.2 Arguments and notes
|
|
*
|
|
* The first argument is the cookie as passed to dtrace_register(). The
|
|
* second argument is the identifier of the current probe. The third
|
|
* argument is the probe argument as passed to dtrace_probe_create(). The
|
|
* fourth argument is a pointer to the argument description. This
|
|
* description is both an input and output parameter: it contains the
|
|
* index of the desired argument in the dtargd_ndx field, and expects
|
|
* the other fields to be filled in upon return. If there is no argument
|
|
* corresponding to the specified index, the dtargd_ndx field should be set
|
|
* to DTRACE_ARGNONE.
|
|
*
|
|
* 1.8.3 Return value
|
|
*
|
|
* None. The dtargd_ndx, dtargd_native, dtargd_xlate and dtargd_mapping
|
|
* members of the dtrace_argdesc_t structure are all output values.
|
|
*
|
|
* 1.8.4 Caller's context
|
|
*
|
|
* dtps_getargdesc() is called from ioctl() context. mod_lock is held, and
|
|
* the DTrace framework is locked in such a way that providers may not
|
|
* register or unregister. This means that the provider may not call any
|
|
* DTrace API that affects its registration with the framework, including
|
|
* dtrace_register(), dtrace_unregister(), dtrace_invalidate(), and
|
|
* dtrace_condense().
|
|
*
|
|
* 1.9 uint64_t dtps_getargval(void *arg, dtrace_id_t id, void *parg,
|
|
* int argno, int aframes)
|
|
*
|
|
* 1.9.1 Overview
|
|
*
|
|
* Called to retrieve a value for an argX or args[X] variable.
|
|
*
|
|
* 1.9.2 Arguments and notes
|
|
*
|
|
* The first argument is the cookie as passed to dtrace_register(). The
|
|
* second argument is the identifier of the current probe. The third
|
|
* argument is the probe argument as passed to dtrace_probe_create(). The
|
|
* fourth argument is the number of the argument (the X in the example in
|
|
* 1.9.1). The fifth argument is the number of stack frames that were used
|
|
* to get from the actual place in the code that fired the probe to
|
|
* dtrace_probe() itself, the so-called artificial frames. This argument may
|
|
* be used to descend an appropriate number of frames to find the correct
|
|
* values. If this entry point is left NULL, the dtrace_getarg() built-in
|
|
* function is used.
|
|
*
|
|
* 1.9.3 Return value
|
|
*
|
|
* The value of the argument.
|
|
*
|
|
* 1.9.4 Caller's context
|
|
*
|
|
* This is called from within dtrace_probe() meaning that interrupts
|
|
* are disabled. No locks should be taken within this entry point.
|
|
*
|
|
* 1.10 int dtps_usermode(void *arg, dtrace_id_t id, void *parg)
|
|
*
|
|
* 1.10.1 Overview
|
|
*
|
|
* Called to determine if the probe was fired in a user context.
|
|
*
|
|
* 1.10.2 Arguments and notes
|
|
*
|
|
* The first argument is the cookie as passed to dtrace_register(). The
|
|
* second argument is the identifier of the current probe. The third
|
|
* argument is the probe argument as passed to dtrace_probe_create(). This
|
|
* entry point must not be left NULL for providers whose probes allow for
|
|
* mixed mode tracing, that is to say those probes that can fire during
|
|
* kernel- _or_ user-mode execution
|
|
*
|
|
* 1.10.3 Return value
|
|
*
|
|
* A boolean value.
|
|
*
|
|
* 1.10.4 Caller's context
|
|
*
|
|
* This is called from within dtrace_probe() meaning that interrupts
|
|
* are disabled. No locks should be taken within this entry point.
|
|
*
|
|
* 1.11 void dtps_destroy(void *arg, dtrace_id_t id, void *parg)
|
|
*
|
|
* 1.11.1 Overview
|
|
*
|
|
* Called to destroy the specified probe.
|
|
*
|
|
* 1.11.2 Arguments and notes
|
|
*
|
|
* The first argument is the cookie as passed to dtrace_register(). The
|
|
* second argument is the identifier of the probe to be destroyed. The third
|
|
* argument is the probe argument as passed to dtrace_probe_create(). The
|
|
* provider should free all state associated with the probe. The framework
|
|
* guarantees that dtps_destroy() is only called for probes that have either
|
|
* been disabled via dtps_disable() or were never enabled via dtps_enable().
|
|
* Once dtps_disable() has been called for a probe, no further call will be
|
|
* made specifying the probe.
|
|
*
|
|
* 1.11.3 Return value
|
|
*
|
|
* None.
|
|
*
|
|
* 1.11.4 Caller's context
|
|
*
|
|
* The DTrace framework is locked in such a way that it may not be called
|
|
* back into at all. mod_lock is held. cpu_lock is not held, and may not be
|
|
* acquired.
|
|
*
|
|
*
|
|
* 2 Provider-to-Framework API
|
|
*
|
|
* 2.1 Overview
|
|
*
|
|
* The Provider-to-Framework API provides the mechanism for the provider to
|
|
* register itself with the DTrace framework, to create probes, to lookup
|
|
* probes and (most importantly) to fire probes. The Provider-to-Framework
|
|
* consists of:
|
|
*
|
|
* dtrace_register() <-- Register a provider with the DTrace framework
|
|
* dtrace_unregister() <-- Remove a provider's DTrace registration
|
|
* dtrace_invalidate() <-- Invalidate the specified provider
|
|
* dtrace_condense() <-- Remove a provider's unenabled probes
|
|
* dtrace_attached() <-- Indicates whether or not DTrace has attached
|
|
* dtrace_probe_create() <-- Create a DTrace probe
|
|
* dtrace_probe_lookup() <-- Lookup a DTrace probe based on its name
|
|
* dtrace_probe_arg() <-- Return the probe argument for a specific probe
|
|
* dtrace_probe() <-- Fire the specified probe
|
|
*
|
|
* 2.2 int dtrace_register(const char *name, const dtrace_pattr_t *pap,
|
|
* uint32_t priv, cred_t *cr, const dtrace_pops_t *pops, void *arg,
|
|
* dtrace_provider_id_t *idp)
|
|
*
|
|
* 2.2.1 Overview
|
|
*
|
|
* dtrace_register() registers the calling provider with the DTrace
|
|
* framework. It should generally be called by DTrace providers in their
|
|
* attach(9E) entry point.
|
|
*
|
|
* 2.2.2 Arguments and Notes
|
|
*
|
|
* The first argument is the name of the provider. The second argument is a
|
|
* pointer to the stability attributes for the provider. The third argument
|
|
* is the privilege flags for the provider, and must be some combination of:
|
|
*
|
|
* DTRACE_PRIV_NONE <= All users may enable probes from this provider
|
|
*
|
|
* DTRACE_PRIV_PROC <= Any user with privilege of PRIV_DTRACE_PROC may
|
|
* enable probes from this provider
|
|
*
|
|
* DTRACE_PRIV_USER <= Any user with privilege of PRIV_DTRACE_USER may
|
|
* enable probes from this provider
|
|
*
|
|
* DTRACE_PRIV_KERNEL <= Any user with privilege of PRIV_DTRACE_KERNEL
|
|
* may enable probes from this provider
|
|
*
|
|
* DTRACE_PRIV_OWNER <= This flag places an additional constraint on
|
|
* the privilege requirements above. These probes
|
|
* require either (a) a user ID matching the user
|
|
* ID of the cred passed in the fourth argument
|
|
* or (b) the PRIV_PROC_OWNER privilege.
|
|
*
|
|
* DTRACE_PRIV_ZONEOWNER<= This flag places an additional constraint on
|
|
* the privilege requirements above. These probes
|
|
* require either (a) a zone ID matching the zone
|
|
* ID of the cred passed in the fourth argument
|
|
* or (b) the PRIV_PROC_ZONE privilege.
|
|
*
|
|
* Note that these flags designate the _visibility_ of the probes, not
|
|
* the conditions under which they may or may not fire.
|
|
*
|
|
* The fourth argument is the credential that is associated with the
|
|
* provider. This argument should be NULL if the privilege flags don't
|
|
* include DTRACE_PRIV_OWNER or DTRACE_PRIV_ZONEOWNER. If non-NULL, the
|
|
* framework stashes the uid and zoneid represented by this credential
|
|
* for use at probe-time, in implicit predicates. These limit visibility
|
|
* of the probes to users and/or zones which have sufficient privilege to
|
|
* access them.
|
|
*
|
|
* The fifth argument is a DTrace provider operations vector, which provides
|
|
* the implementation for the Framework-to-Provider API. (See Section 1,
|
|
* above.) This must be non-NULL, and each member must be non-NULL. The
|
|
* exceptions to this are (1) the dtps_provide() and dtps_provide_module()
|
|
* members (if the provider so desires, _one_ of these members may be left
|
|
* NULL -- denoting that the provider only implements the other) and (2)
|
|
* the dtps_suspend() and dtps_resume() members, which must either both be
|
|
* NULL or both be non-NULL.
|
|
*
|
|
* The sixth argument is a cookie to be specified as the first argument for
|
|
* each function in the Framework-to-Provider API. This argument may have
|
|
* any value.
|
|
*
|
|
* The final argument is a pointer to dtrace_provider_id_t. If
|
|
* dtrace_register() successfully completes, the provider identifier will be
|
|
* stored in the memory pointed to be this argument. This argument must be
|
|
* non-NULL.
|
|
*
|
|
* 2.2.3 Return value
|
|
*
|
|
* On success, dtrace_register() returns 0 and stores the new provider's
|
|
* identifier into the memory pointed to by the idp argument. On failure,
|
|
* dtrace_register() returns an errno:
|
|
*
|
|
* EINVAL The arguments passed to dtrace_register() were somehow invalid.
|
|
* This may because a parameter that must be non-NULL was NULL,
|
|
* because the name was invalid (either empty or an illegal
|
|
* provider name) or because the attributes were invalid.
|
|
*
|
|
* No other failure code is returned.
|
|
*
|
|
* 2.2.4 Caller's context
|
|
*
|
|
* dtrace_register() may induce calls to dtrace_provide(); the provider must
|
|
* hold no locks across dtrace_register() that may also be acquired by
|
|
* dtrace_provide(). cpu_lock and mod_lock must not be held.
|
|
*
|
|
* 2.3 int dtrace_unregister(dtrace_provider_t id)
|
|
*
|
|
* 2.3.1 Overview
|
|
*
|
|
* Unregisters the specified provider from the DTrace framework. It should
|
|
* generally be called by DTrace providers in their detach(9E) entry point.
|
|
*
|
|
* 2.3.2 Arguments and Notes
|
|
*
|
|
* The only argument is the provider identifier, as returned from a
|
|
* successful call to dtrace_register(). As a result of calling
|
|
* dtrace_unregister(), the DTrace framework will call back into the provider
|
|
* via the dtps_destroy() entry point. Once dtrace_unregister() successfully
|
|
* completes, however, the DTrace framework will no longer make calls through
|
|
* the Framework-to-Provider API.
|
|
*
|
|
* 2.3.3 Return value
|
|
*
|
|
* On success, dtrace_unregister returns 0. On failure, dtrace_unregister()
|
|
* returns an errno:
|
|
*
|
|
* EBUSY There are currently processes that have the DTrace pseudodevice
|
|
* open, or there exists an anonymous enabling that hasn't yet
|
|
* been claimed.
|
|
*
|
|
* No other failure code is returned.
|
|
*
|
|
* 2.3.4 Caller's context
|
|
*
|
|
* Because a call to dtrace_unregister() may induce calls through the
|
|
* Framework-to-Provider API, the caller may not hold any lock across
|
|
* dtrace_register() that is also acquired in any of the Framework-to-
|
|
* Provider API functions. Additionally, mod_lock may not be held.
|
|
*
|
|
* 2.4 void dtrace_invalidate(dtrace_provider_id_t id)
|
|
*
|
|
* 2.4.1 Overview
|
|
*
|
|
* Invalidates the specified provider. All subsequent probe lookups for the
|
|
* specified provider will fail, but its probes will not be removed.
|
|
*
|
|
* 2.4.2 Arguments and note
|
|
*
|
|
* The only argument is the provider identifier, as returned from a
|
|
* successful call to dtrace_register(). In general, a provider's probes
|
|
* always remain valid; dtrace_invalidate() is a mechanism for invalidating
|
|
* an entire provider, regardless of whether or not probes are enabled or
|
|
* not. Note that dtrace_invalidate() will _not_ prevent already enabled
|
|
* probes from firing -- it will merely prevent any new enablings of the
|
|
* provider's probes.
|
|
*
|
|
* 2.5 int dtrace_condense(dtrace_provider_id_t id)
|
|
*
|
|
* 2.5.1 Overview
|
|
*
|
|
* Removes all the unenabled probes for the given provider. This function is
|
|
* not unlike dtrace_unregister(), except that it doesn't remove the
|
|
* provider just as many of its associated probes as it can.
|
|
*
|
|
* 2.5.2 Arguments and Notes
|
|
*
|
|
* As with dtrace_unregister(), the sole argument is the provider identifier
|
|
* as returned from a successful call to dtrace_register(). As a result of
|
|
* calling dtrace_condense(), the DTrace framework will call back into the
|
|
* given provider's dtps_destroy() entry point for each of the provider's
|
|
* unenabled probes.
|
|
*
|
|
* 2.5.3 Return value
|
|
*
|
|
* Currently, dtrace_condense() always returns 0. However, consumers of this
|
|
* function should check the return value as appropriate; its behavior may
|
|
* change in the future.
|
|
*
|
|
* 2.5.4 Caller's context
|
|
*
|
|
* As with dtrace_unregister(), the caller may not hold any lock across
|
|
* dtrace_condense() that is also acquired in the provider's entry points.
|
|
* Also, mod_lock may not be held.
|
|
*
|
|
* 2.6 int dtrace_attached()
|
|
*
|
|
* 2.6.1 Overview
|
|
*
|
|
* Indicates whether or not DTrace has attached.
|
|
*
|
|
* 2.6.2 Arguments and Notes
|
|
*
|
|
* For most providers, DTrace makes initial contact beyond registration.
|
|
* That is, once a provider has registered with DTrace, it waits to hear
|
|
* from DTrace to create probes. However, some providers may wish to
|
|
* proactively create probes without first being told by DTrace to do so.
|
|
* If providers wish to do this, they must first call dtrace_attached() to
|
|
* determine if DTrace itself has attached. If dtrace_attached() returns 0,
|
|
* the provider must not make any other Provider-to-Framework API call.
|
|
*
|
|
* 2.6.3 Return value
|
|
*
|
|
* dtrace_attached() returns 1 if DTrace has attached, 0 otherwise.
|
|
*
|
|
* 2.7 int dtrace_probe_create(dtrace_provider_t id, const char *mod,
|
|
* const char *func, const char *name, int aframes, void *arg)
|
|
*
|
|
* 2.7.1 Overview
|
|
*
|
|
* Creates a probe with specified module name, function name, and name.
|
|
*
|
|
* 2.7.2 Arguments and Notes
|
|
*
|
|
* The first argument is the provider identifier, as returned from a
|
|
* successful call to dtrace_register(). The second, third, and fourth
|
|
* arguments are the module name, function name, and probe name,
|
|
* respectively. Of these, module name and function name may both be NULL
|
|
* (in which case the probe is considered to be unanchored), or they may both
|
|
* be non-NULL. The name must be non-NULL, and must point to a non-empty
|
|
* string.
|
|
*
|
|
* The fifth argument is the number of artificial stack frames that will be
|
|
* found on the stack when dtrace_probe() is called for the new probe. These
|
|
* artificial frames will be automatically be pruned should the stack() or
|
|
* stackdepth() functions be called as part of one of the probe's ECBs. If
|
|
* the parameter doesn't add an artificial frame, this parameter should be
|
|
* zero.
|
|
*
|
|
* The final argument is a probe argument that will be passed back to the
|
|
* provider when a probe-specific operation is called. (e.g., via
|
|
* dtps_enable(), dtps_disable(), etc.)
|
|
*
|
|
* Note that it is up to the provider to be sure that the probe that it
|
|
* creates does not already exist -- if the provider is unsure of the probe's
|
|
* existence, it should assure its absence with dtrace_probe_lookup() before
|
|
* calling dtrace_probe_create().
|
|
*
|
|
* 2.7.3 Return value
|
|
*
|
|
* dtrace_probe_create() always succeeds, and always returns the identifier
|
|
* of the newly-created probe.
|
|
*
|
|
* 2.7.4 Caller's context
|
|
*
|
|
* While dtrace_probe_create() is generally expected to be called from
|
|
* dtps_provide() and/or dtps_provide_module(), it may be called from other
|
|
* non-DTrace contexts. Neither cpu_lock nor mod_lock may be held.
|
|
*
|
|
* 2.8 dtrace_id_t dtrace_probe_lookup(dtrace_provider_t id, const char *mod,
|
|
* const char *func, const char *name)
|
|
*
|
|
* 2.8.1 Overview
|
|
*
|
|
* Looks up a probe based on provdider and one or more of module name,
|
|
* function name and probe name.
|
|
*
|
|
* 2.8.2 Arguments and Notes
|
|
*
|
|
* The first argument is the provider identifier, as returned from a
|
|
* successful call to dtrace_register(). The second, third, and fourth
|
|
* arguments are the module name, function name, and probe name,
|
|
* respectively. Any of these may be NULL; dtrace_probe_lookup() will return
|
|
* the identifier of the first probe that is provided by the specified
|
|
* provider and matches all of the non-NULL matching criteria.
|
|
* dtrace_probe_lookup() is generally used by a provider to be check the
|
|
* existence of a probe before creating it with dtrace_probe_create().
|
|
*
|
|
* 2.8.3 Return value
|
|
*
|
|
* If the probe exists, returns its identifier. If the probe does not exist,
|
|
* return DTRACE_IDNONE.
|
|
*
|
|
* 2.8.4 Caller's context
|
|
*
|
|
* While dtrace_probe_lookup() is generally expected to be called from
|
|
* dtps_provide() and/or dtps_provide_module(), it may also be called from
|
|
* other non-DTrace contexts. Neither cpu_lock nor mod_lock may be held.
|
|
*
|
|
* 2.9 void *dtrace_probe_arg(dtrace_provider_t id, dtrace_id_t probe)
|
|
*
|
|
* 2.9.1 Overview
|
|
*
|
|
* Returns the probe argument associated with the specified probe.
|
|
*
|
|
* 2.9.2 Arguments and Notes
|
|
*
|
|
* The first argument is the provider identifier, as returned from a
|
|
* successful call to dtrace_register(). The second argument is a probe
|
|
* identifier, as returned from dtrace_probe_lookup() or
|
|
* dtrace_probe_create(). This is useful if a probe has multiple
|
|
* provider-specific components to it: the provider can create the probe
|
|
* once with provider-specific state, and then add to the state by looking
|
|
* up the probe based on probe identifier.
|
|
*
|
|
* 2.9.3 Return value
|
|
*
|
|
* Returns the argument associated with the specified probe. If the
|
|
* specified probe does not exist, or if the specified probe is not provided
|
|
* by the specified provider, NULL is returned.
|
|
*
|
|
* 2.9.4 Caller's context
|
|
*
|
|
* While dtrace_probe_arg() is generally expected to be called from
|
|
* dtps_provide() and/or dtps_provide_module(), it may also be called from
|
|
* other non-DTrace contexts. Neither cpu_lock nor mod_lock may be held.
|
|
*
|
|
* 2.10 void dtrace_probe(dtrace_id_t probe, uintptr_t arg0, uintptr_t arg1,
|
|
* uintptr_t arg2, uintptr_t arg3, uintptr_t arg4)
|
|
*
|
|
* 2.10.1 Overview
|
|
*
|
|
* The epicenter of DTrace: fires the specified probes with the specified
|
|
* arguments.
|
|
*
|
|
* 2.10.2 Arguments and Notes
|
|
*
|
|
* The first argument is a probe identifier as returned by
|
|
* dtrace_probe_create() or dtrace_probe_lookup(). The second through sixth
|
|
* arguments are the values to which the D variables "arg0" through "arg4"
|
|
* will be mapped.
|
|
*
|
|
* dtrace_probe() should be called whenever the specified probe has fired --
|
|
* however the provider defines it.
|
|
*
|
|
* 2.10.3 Return value
|
|
*
|
|
* None.
|
|
*
|
|
* 2.10.4 Caller's context
|
|
*
|
|
* dtrace_probe() may be called in virtually any context: kernel, user,
|
|
* interrupt, high-level interrupt, with arbitrary adaptive locks held, with
|
|
* dispatcher locks held, with interrupts disabled, etc. The only latitude
|
|
* that must be afforded to DTrace is the ability to make calls within
|
|
* itself (and to its in-kernel subroutines) and the ability to access
|
|
* arbitrary (but mapped) memory. On some platforms, this constrains
|
|
* context. For example, on UltraSPARC, dtrace_probe() cannot be called
|
|
* from any context in which TL is greater than zero. dtrace_probe() may
|
|
* also not be called from any routine which may be called by dtrace_probe()
|
|
* -- which includes functions in the DTrace framework and some in-kernel
|
|
* DTrace subroutines. All such functions "dtrace_"; providers that
|
|
* instrument the kernel arbitrarily should be sure to not instrument these
|
|
* routines.
|
|
*/
|
|
typedef struct dtrace_pops {
|
|
void (*dtps_provide)(void *arg, const dtrace_probedesc_t *spec);
|
|
void (*dtps_provide_module)(void *arg, struct modctl *mp);
|
|
int (*dtps_enable)(void *arg, dtrace_id_t id, void *parg);
|
|
void (*dtps_disable)(void *arg, dtrace_id_t id, void *parg);
|
|
void (*dtps_suspend)(void *arg, dtrace_id_t id, void *parg);
|
|
void (*dtps_resume)(void *arg, dtrace_id_t id, void *parg);
|
|
void (*dtps_getargdesc)(void *arg, dtrace_id_t id, void *parg,
|
|
dtrace_argdesc_t *desc);
|
|
uint64_t (*dtps_getargval)(void *arg, dtrace_id_t id, void *parg,
|
|
int argno, int aframes);
|
|
int (*dtps_usermode)(void *arg, dtrace_id_t id, void *parg);
|
|
void (*dtps_destroy)(void *arg, dtrace_id_t id, void *parg);
|
|
} dtrace_pops_t;
|
|
|
|
typedef uintptr_t dtrace_provider_id_t;
|
|
|
|
extern int dtrace_register(const char *, const dtrace_pattr_t *, uint32_t,
|
|
cred_t *, const dtrace_pops_t *, void *, dtrace_provider_id_t *);
|
|
extern int dtrace_unregister(dtrace_provider_id_t);
|
|
extern int dtrace_condense(dtrace_provider_id_t);
|
|
extern void dtrace_invalidate(dtrace_provider_id_t);
|
|
extern dtrace_id_t dtrace_probe_lookup(dtrace_provider_id_t, const char *,
|
|
const char *, const char *);
|
|
extern dtrace_id_t dtrace_probe_create(dtrace_provider_id_t, const char *,
|
|
const char *, const char *, int, void *);
|
|
extern void *dtrace_probe_arg(dtrace_provider_id_t, dtrace_id_t);
|
|
#if !defined(__APPLE__)
|
|
extern void dtrace_probe(dtrace_id_t, uintptr_t arg0, uintptr_t arg1,
|
|
uintptr_t arg2, uintptr_t arg3, uintptr_t arg4);
|
|
#else
|
|
extern void dtrace_probe(dtrace_id_t, uint64_t arg0, uint64_t arg1,
|
|
uint64_t arg2, uint64_t arg3, uint64_t arg4);
|
|
#endif /* __APPLE__ */
|
|
|
|
/*
|
|
* DTrace Meta Provider API
|
|
*
|
|
* The following functions are implemented by the DTrace framework and are
|
|
* used to implement meta providers. Meta providers plug into the DTrace
|
|
* framework and are used to instantiate new providers on the fly. At
|
|
* present, there is only one type of meta provider and only one meta
|
|
* provider may be registered with the DTrace framework at a time. The
|
|
* sole meta provider type provides user-land static tracing facilities
|
|
* by taking meta probe descriptions and adding a corresponding provider
|
|
* into the DTrace framework.
|
|
*
|
|
* 1 Framework-to-Provider
|
|
*
|
|
* 1.1 Overview
|
|
*
|
|
* The Framework-to-Provider API is represented by the dtrace_mops structure
|
|
* that the meta provider passes to the framework when registering itself as
|
|
* a meta provider. This structure consists of the following members:
|
|
*
|
|
* dtms_create_probe() <-- Add a new probe to a created provider
|
|
* dtms_provide_proc() <-- Create a new provider for a given process
|
|
* dtms_remove_proc() <-- Remove a previously created provider
|
|
*
|
|
* 1.2 void dtms_create_probe(void *arg, void *parg,
|
|
* dtrace_helper_probedesc_t *probedesc);
|
|
*
|
|
* 1.2.1 Overview
|
|
*
|
|
* Called by the DTrace framework to create a new probe in a provider
|
|
* created by this meta provider.
|
|
*
|
|
* 1.2.2 Arguments and notes
|
|
*
|
|
* The first argument is the cookie as passed to dtrace_meta_register().
|
|
* The second argument is the provider cookie for the associated provider;
|
|
* this is obtained from the return value of dtms_provide_proc(). The third
|
|
* argument is the helper probe description.
|
|
*
|
|
* 1.2.3 Return value
|
|
*
|
|
* None
|
|
*
|
|
* 1.2.4 Caller's context
|
|
*
|
|
* dtms_create_probe() is called from either ioctl() or module load context.
|
|
* The DTrace framework is locked in such a way that meta providers may not
|
|
* register or unregister. This means that the meta provider cannot call
|
|
* dtrace_meta_register() or dtrace_meta_unregister(). However, the context is
|
|
* such that the provider may (and is expected to) call provider-related
|
|
* DTrace provider APIs including dtrace_probe_create().
|
|
*
|
|
* 1.3 void *dtms_provide_proc(void *arg, dtrace_meta_provider_t *mprov,
|
|
* proc_t *proc)
|
|
*
|
|
* 1.3.1 Overview
|
|
*
|
|
* Called by the DTrace framework to instantiate a new provider given the
|
|
* description of the provider and probes in the mprov argument. The
|
|
* meta provider should call dtrace_register() to insert the new provider
|
|
* into the DTrace framework.
|
|
*
|
|
* 1.3.2 Arguments and notes
|
|
*
|
|
* The first argument is the cookie as passed to dtrace_meta_register().
|
|
* The second argument is a pointer to a structure describing the new
|
|
* helper provider. The third argument is the process identifier for
|
|
* process associated with this new provider. Note that the name of the
|
|
* provider as passed to dtrace_register() should be the contatenation of
|
|
* the dtmpb_provname member of the mprov argument and the processs
|
|
* identifier as a string.
|
|
*
|
|
* 1.3.3 Return value
|
|
*
|
|
* The cookie for the provider that the meta provider creates. This is
|
|
* the same value that it passed to dtrace_register().
|
|
*
|
|
* 1.3.4 Caller's context
|
|
*
|
|
* dtms_provide_proc() is called from either ioctl() or module load context.
|
|
* The DTrace framework is locked in such a way that meta providers may not
|
|
* register or unregister. This means that the meta provider cannot call
|
|
* dtrace_meta_register() or dtrace_meta_unregister(). However, the context
|
|
* is such that the provider may -- and is expected to -- call
|
|
* provider-related DTrace provider APIs including dtrace_register().
|
|
*
|
|
* 1.4 void dtms_remove_proc(void *arg, dtrace_meta_provider_t *mprov,
|
|
* proc_t proc)
|
|
*
|
|
* 1.4.1 Overview
|
|
*
|
|
* Called by the DTrace framework to remove a provider that had previously
|
|
* been instantiated via the dtms_provide_pid() entry point. The meta
|
|
* provider need not remove the provider immediately, but this entry
|
|
* point indicates that the provider should be removed as soon as possible
|
|
* using the dtrace_unregister() API.
|
|
*
|
|
* 1.4.2 Arguments and notes
|
|
*
|
|
* The first argument is the cookie as passed to dtrace_meta_register().
|
|
* The second argument is a pointer to a structure describing the helper
|
|
* provider. The third argument is the process identifier for process
|
|
* associated with this new provider.
|
|
*
|
|
* 1.4.3 Return value
|
|
*
|
|
* None
|
|
*
|
|
* 1.4.4 Caller's context
|
|
*
|
|
* dtms_remove_proc() is called from either ioctl() or exit() context.
|
|
* The DTrace framework is locked in such a way that meta providers may not
|
|
* register or unregister. This means that the meta provider cannot call
|
|
* dtrace_meta_register() or dtrace_meta_unregister(). However, the context
|
|
* is such that the provider may -- and is expected to -- call
|
|
* provider-related DTrace provider APIs including dtrace_unregister().
|
|
*/
|
|
typedef struct dtrace_helper_probedesc {
|
|
char *dthpb_mod; /* probe module */
|
|
char *dthpb_func; /* probe function */
|
|
char *dthpb_name; /* probe name */
|
|
uint64_t dthpb_base; /* base address */
|
|
#if !defined(__APPLE__)
|
|
uint32_t *dthpb_offs; /* offsets array */
|
|
uint32_t *dthpb_enoffs; /* is-enabled offsets array */
|
|
#else
|
|
int32_t *dthpb_offs; /* (signed) offsets array */
|
|
int32_t *dthpb_enoffs; /* (signed) is-enabled offsets array */
|
|
#endif
|
|
uint32_t dthpb_noffs; /* offsets count */
|
|
uint32_t dthpb_nenoffs; /* is-enabled offsets count */
|
|
uint8_t *dthpb_args; /* argument mapping array */
|
|
uint8_t dthpb_xargc; /* translated argument count */
|
|
uint8_t dthpb_nargc; /* native argument count */
|
|
char *dthpb_xtypes; /* translated types strings */
|
|
char *dthpb_ntypes; /* native types strings */
|
|
} dtrace_helper_probedesc_t;
|
|
|
|
typedef struct dtrace_helper_provdesc {
|
|
char *dthpv_provname; /* provider name */
|
|
dtrace_pattr_t dthpv_pattr; /* stability attributes */
|
|
} dtrace_helper_provdesc_t;
|
|
|
|
/*
|
|
* APPLE NOTE: dtms_provide_pid and dtms_remove_pid are replaced with
|
|
* dtms_provide_proc on Darwin, and a proc reference need to be held
|
|
* for the duration of the call.
|
|
*
|
|
* This is due to the fact that proc_find is not re-entrant on Darwin.
|
|
*/
|
|
|
|
typedef struct dtrace_mops {
|
|
void (*dtms_create_probe)(void *, void *, dtrace_helper_probedesc_t *);
|
|
void *(*dtms_provide_proc)(void *, dtrace_helper_provdesc_t *, proc_t*);
|
|
void (*dtms_remove_proc)(void *, dtrace_helper_provdesc_t *, proc_t*);
|
|
char* (*dtms_provider_name)(void *);
|
|
} dtrace_mops_t;
|
|
|
|
typedef uintptr_t dtrace_meta_provider_id_t;
|
|
|
|
extern int dtrace_meta_register(const char *, const dtrace_mops_t *, void *,
|
|
dtrace_meta_provider_id_t *);
|
|
extern int dtrace_meta_unregister(dtrace_meta_provider_id_t);
|
|
|
|
/*
|
|
* DTrace Kernel Hooks
|
|
*
|
|
* The following functions are implemented by the base kernel and form a set of
|
|
* hooks used by the DTrace framework. DTrace hooks are implemented in either
|
|
* uts/common/os/dtrace_subr.c, an ISA-specific assembly file, or in a
|
|
* uts/<platform>/os/dtrace_subr.c corresponding to each hardware platform.
|
|
*/
|
|
|
|
typedef enum dtrace_vtime_state {
|
|
DTRACE_VTIME_INACTIVE = 0, /* No DTrace, no TNF */
|
|
DTRACE_VTIME_ACTIVE, /* DTrace virtual time, no TNF */
|
|
DTRACE_VTIME_INACTIVE_TNF, /* No DTrace, TNF active */
|
|
DTRACE_VTIME_ACTIVE_TNF /* DTrace virtual time _and_ TNF */
|
|
} dtrace_vtime_state_t;
|
|
|
|
extern dtrace_vtime_state_t dtrace_vtime_active;
|
|
extern void dtrace_vtime_switch(kthread_t *next);
|
|
extern void dtrace_vtime_enable_tnf(void);
|
|
extern void dtrace_vtime_disable_tnf(void);
|
|
extern void dtrace_vtime_enable(void);
|
|
extern void dtrace_vtime_disable(void);
|
|
|
|
#if !defined(__APPLE__)
|
|
struct regs;
|
|
|
|
extern int (*dtrace_pid_probe_ptr)(struct regs *);
|
|
extern int (*dtrace_return_probe_ptr)(struct regs *);
|
|
#else
|
|
#if defined (__i386__) || defined(__x86_64__)
|
|
extern int (*dtrace_pid_probe_ptr)(x86_saved_state_t *regs);
|
|
extern int (*dtrace_return_probe_ptr)(x86_saved_state_t* regs);
|
|
#elif defined (__arm__) || defined(__arm64__)
|
|
extern int (*dtrace_pid_probe_ptr)(arm_saved_state_t *regs);
|
|
extern int (*dtrace_return_probe_ptr)(arm_saved_state_t *regs);
|
|
#else
|
|
#error architecture not supported
|
|
#endif
|
|
#endif /* __APPLE__ */
|
|
extern void (*dtrace_fasttrap_fork_ptr)(proc_t *, proc_t *);
|
|
extern void (*dtrace_fasttrap_exec_ptr)(proc_t *);
|
|
extern void (*dtrace_fasttrap_exit_ptr)(proc_t *);
|
|
extern void dtrace_fasttrap_fork(proc_t *, proc_t *);
|
|
|
|
typedef uintptr_t dtrace_icookie_t;
|
|
typedef void (*dtrace_xcall_t)(void *);
|
|
|
|
extern dtrace_icookie_t dtrace_interrupt_disable(void);
|
|
extern void dtrace_interrupt_enable(dtrace_icookie_t);
|
|
|
|
extern void dtrace_membar_producer(void);
|
|
extern void dtrace_membar_consumer(void);
|
|
|
|
extern void (*dtrace_cpu_init)(processorid_t);
|
|
#if !defined(__APPLE__)
|
|
extern void (*dtrace_modload)(struct modctl *);
|
|
extern void (*dtrace_modunload)(struct modctl *);
|
|
#else
|
|
extern int (*dtrace_modload)(struct kmod_info *, uint32_t);
|
|
extern int (*dtrace_modunload)(struct kmod_info *);
|
|
#endif /* __APPLE__ */
|
|
extern void (*dtrace_helpers_cleanup)(proc_t*);
|
|
extern void (*dtrace_helpers_fork)(proc_t *parent, proc_t *child);
|
|
extern void (*dtrace_cpustart_init)(void);
|
|
extern void (*dtrace_cpustart_fini)(void);
|
|
|
|
extern void (*dtrace_kreloc_init)(void);
|
|
extern void (*dtrace_kreloc_fini)(void);
|
|
|
|
extern void (*dtrace_debugger_init)(void);
|
|
extern void (*dtrace_debugger_fini)(void);
|
|
extern dtrace_cacheid_t dtrace_predcache_id;
|
|
|
|
extern hrtime_t dtrace_gethrtime(void);
|
|
extern void dtrace_sync(void);
|
|
extern void dtrace_toxic_ranges(void (*)(uintptr_t, uintptr_t));
|
|
extern void dtrace_xcall(processorid_t, dtrace_xcall_t, void *);
|
|
|
|
#if defined(__i386__) || defined(__x86_64__)
|
|
extern int dtrace_instr_size(uchar_t *instr);
|
|
extern int dtrace_instr_size_isa(uchar_t *, model_t, int *);
|
|
extern void dtrace_invop_add(int (*)(uintptr_t, uintptr_t *, uintptr_t));
|
|
extern void dtrace_invop_remove(int (*)(uintptr_t, uintptr_t *, uintptr_t));
|
|
extern void *dtrace_invop_callsite_pre;
|
|
extern void *dtrace_invop_callsite_post;
|
|
#endif
|
|
|
|
#if defined(__arm__)
|
|
extern int dtrace_instr_size(uint32_t instr, int thumb_mode);
|
|
#endif
|
|
#if defined(__arm__) || defined(__arm64__)
|
|
extern void dtrace_invop_add(int (*)(uintptr_t, uintptr_t *, uintptr_t));
|
|
extern void dtrace_invop_remove(int (*)(uintptr_t, uintptr_t *, uintptr_t));
|
|
extern void *dtrace_invop_callsite_pre;
|
|
extern void *dtrace_invop_callsite_post;
|
|
#endif
|
|
|
|
#undef proc_t
|
|
|
|
#define DTRACE_CPUFLAG_ISSET(flag) \
|
|
(cpu_core[CPU->cpu_id].cpuc_dtrace_flags & (flag))
|
|
|
|
#define DTRACE_CPUFLAG_SET(flag) \
|
|
(cpu_core[CPU->cpu_id].cpuc_dtrace_flags |= (flag))
|
|
|
|
#define DTRACE_CPUFLAG_CLEAR(flag) \
|
|
(cpu_core[CPU->cpu_id].cpuc_dtrace_flags &= ~(flag))
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* _ASM */
|
|
|
|
#if defined(__i386__) || defined(__x86_64__)
|
|
|
|
#define DTRACE_INVOP_PUSHL_EBP 1
|
|
#define DTRACE_INVOP_POPL_EBP 2
|
|
#define DTRACE_INVOP_LEAVE 3
|
|
#define DTRACE_INVOP_NOP 4
|
|
#define DTRACE_INVOP_RET 5
|
|
|
|
#endif
|
|
|
|
#if defined(__arm__) || defined(__arm64__)
|
|
|
|
#define DTRACE_INVOP_NOP 4
|
|
#define DTRACE_INVOP_RET 5
|
|
#define DTRACE_INVOP_B 6
|
|
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _SYS_DTRACE_H */
|