1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 * 21 */ 22 23 #ifndef _DTRACE_CDDL_H_ 24 #define _DTRACE_CDDL_H_ 25 26 #include <sys/proc.h> 27 28 #define LOCK_LEVEL 10 29 30 /* 31 * Kernel DTrace extension to 'struct proc' for FreeBSD. 32 */ 33 typedef struct kdtrace_proc { 34 int p_dtrace_probes; /* Are there probes for this proc? */ 35 uint64_t p_dtrace_count; /* Number of DTrace tracepoints */ 36 void *p_dtrace_helpers; /* DTrace helpers, if any */ 37 int p_dtrace_model; 38 uint64_t p_fasttrap_tp_gen; /* Tracepoint hash table gen */ 39 } kdtrace_proc_t; 40 41 /* 42 * Kernel DTrace extension to 'struct thread' for FreeBSD. 43 */ 44 typedef struct kdtrace_thread { 45 uint8_t td_dtrace_stop; /* Indicates a DTrace-desired stop */ 46 uint8_t td_dtrace_sig; /* Signal sent via DTrace's raise() */ 47 uint8_t td_dtrace_inprobe; /* Are we in a probe? */ 48 u_int td_predcache; /* DTrace predicate cache */ 49 uint64_t td_dtrace_vtime; /* DTrace virtual time */ 50 uint64_t td_dtrace_start; /* DTrace slice start time */ 51 52 union __tdu { 53 struct __tds { 54 uint8_t _td_dtrace_on; 55 /* Hit a fasttrap tracepoint. */ 56 uint8_t _td_dtrace_step; 57 /* About to return to kernel. */ 58 uint8_t _td_dtrace_ret; 59 /* Handling a return probe. */ 60 uint8_t _td_dtrace_ast; 61 /* Saved ast flag. */ 62 #ifdef __amd64__ 63 uint8_t _td_dtrace_reg; 64 #endif 65 } _tds; 66 u_long _td_dtrace_ft; /* Bitwise or of these flags. */ 67 } _tdu; 68 #define td_dtrace_ft _tdu._td_dtrace_ft 69 #define td_dtrace_on _tdu._tds._td_dtrace_on 70 #define td_dtrace_step _tdu._tds._td_dtrace_step 71 #define td_dtrace_ret _tdu._tds._td_dtrace_ret 72 #define td_dtrace_ast _tdu._tds._td_dtrace_ast 73 #define td_dtrace_reg _tdu._tds._td_dtrace_reg 74 75 uintptr_t td_dtrace_pc; /* DTrace saved pc from fasttrap. */ 76 uintptr_t td_dtrace_npc; /* DTrace next pc from fasttrap. */ 77 uintptr_t td_dtrace_scrpc; 78 /* DTrace per-thread scratch location. */ 79 uintptr_t td_dtrace_astpc; 80 /* DTrace return sequence location. */ 81 #ifdef __amd64__ 82 uintptr_t td_dtrace_regv; 83 #endif 84 uint64_t td_hrtime; /* Last time on cpu. */ 85 void *td_dtrace_sscr; /* Saved scratch space location. */ 86 void *td_systrace_args; /* syscall probe arguments. */ 87 uint64_t td_fasttrap_tp_gen; /* Tracepoint hash table gen. */ 88 struct trapframe *td_dtrace_trapframe; /* Trap frame from invop. */ 89 void *td_kinst_tramp; 90 } kdtrace_thread_t; 91 92 /* 93 * Definitions to reference fields in the FreeBSD DTrace structures defined 94 * above using the names of fields in similar structures in Solaris. Note 95 * that the separation on FreeBSD is a licensing constraint designed to 96 * keep the GENERIC kernel BSD licensed. 97 */ 98 #define t_dtrace_vtime td_dtrace->td_dtrace_vtime 99 #define t_dtrace_start td_dtrace->td_dtrace_start 100 #define t_dtrace_stop td_dtrace->td_dtrace_stop 101 #define t_dtrace_sig td_dtrace->td_dtrace_sig 102 #define t_dtrace_inprobe td_dtrace->td_dtrace_inprobe 103 #define t_predcache td_dtrace->td_predcache 104 #define t_dtrace_ft td_dtrace->td_dtrace_ft 105 #define t_dtrace_on td_dtrace->td_dtrace_on 106 #define t_dtrace_step td_dtrace->td_dtrace_step 107 #define t_dtrace_ret td_dtrace->td_dtrace_ret 108 #define t_dtrace_ast td_dtrace->td_dtrace_ast 109 #define t_dtrace_reg td_dtrace->td_dtrace_reg 110 #define t_dtrace_pc td_dtrace->td_dtrace_pc 111 #define t_dtrace_npc td_dtrace->td_dtrace_npc 112 #define t_dtrace_scrpc td_dtrace->td_dtrace_scrpc 113 #define t_dtrace_astpc td_dtrace->td_dtrace_astpc 114 #define t_dtrace_regv td_dtrace->td_dtrace_regv 115 #define t_dtrace_sscr td_dtrace->td_dtrace_sscr 116 #define t_dtrace_systrace_args td_dtrace->td_systrace_args 117 #define t_fasttrap_tp_gen td_dtrace->td_fasttrap_tp_gen 118 #define t_dtrace_trapframe td_dtrace->td_dtrace_trapframe 119 #define t_kinst_tramp td_dtrace->td_kinst_tramp 120 #define p_dtrace_helpers p_dtrace->p_dtrace_helpers 121 #define p_dtrace_count p_dtrace->p_dtrace_count 122 #define p_dtrace_probes p_dtrace->p_dtrace_probes 123 #define p_model p_dtrace->p_dtrace_model 124 #define p_fasttrap_tp_gen p_dtrace->p_fasttrap_tp_gen 125 126 #define DATAMODEL_NATIVE 0 127 #ifdef __amd64__ 128 #define DATAMODEL_LP64 0 129 #define DATAMODEL_ILP32 1 130 #else 131 #define DATAMODEL_LP64 1 132 #define DATAMODEL_ILP32 0 133 #endif 134 135 /* 136 * Definitions for fields in struct proc which are named differently in FreeBSD. 137 */ 138 #define p_cred p_ucred 139 #define p_parent p_pptr 140 141 /* 142 * Definitions for fields in struct thread which are named differently in FreeBSD. 143 */ 144 #define t_procp td_proc 145 #define t_tid td_tid 146 #define t_did td_tid 147 #define t_cred td_ucred 148 149 150 int priv_policy(const cred_t *, int, boolean_t, int, const char *); 151 boolean_t priv_policy_only(const cred_t *, int, boolean_t); 152 boolean_t priv_policy_choice(const cred_t *, int, boolean_t); 153 154 /* 155 * Test privilege. Audit success or failure, allow privilege debugging. 156 * Returns 0 for success, err for failure. 157 */ 158 #define PRIV_POLICY(cred, priv, all, err, reason) \ 159 priv_policy((cred), (priv), (all), (err), (reason)) 160 161 /* 162 * Test privilege. Audit success only, no privilege debugging. 163 * Returns 1 for success, and 0 for failure. 164 */ 165 #define PRIV_POLICY_CHOICE(cred, priv, all) \ 166 priv_policy_choice((cred), (priv), (all)) 167 168 /* 169 * Test privilege. No priv_debugging, no auditing. 170 * Returns 1 for success, and 0 for failure. 171 */ 172 173 #define PRIV_POLICY_ONLY(cred, priv, all) \ 174 priv_policy_only((cred), (priv), (all)) 175 176 #endif /* !_DTRACE_CDDL_H_ */ 177