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 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright (c) 2012, Joyent, Inc. All rights reserved.
25 * Copyright (c) 2012 by Delphix. All rights reserved.
26 */
27
28 #include <sys/types.h>
29 #include <sys/modctl.h>
30 #include <sys/systeminfo.h>
31 #include <sys/resource.h>
32
33 #include <libelf.h>
34 #include <strings.h>
35 #include <alloca.h>
36 #include <limits.h>
37 #include <unistd.h>
38 #include <stdlib.h>
39 #include <stdio.h>
40 #include <fcntl.h>
41 #include <errno.h>
42 #include <assert.h>
43
44 #define _POSIX_PTHREAD_SEMANTICS
45 #include <dirent.h>
46 #undef _POSIX_PTHREAD_SEMANTICS
47
48 #include <dt_impl.h>
49 #include <dt_program.h>
50 #include <dt_module.h>
51 #include <dt_printf.h>
52 #include <dt_string.h>
53 #include <dt_provider.h>
54
55 /*
56 * Stability and versioning definitions. These #defines are used in the tables
57 * of identifiers below to fill in the attribute and version fields associated
58 * with each identifier. The DT_ATTR_* macros are a convenience to permit more
59 * concise declarations of common attributes such as Stable/Stable/Common. The
60 * DT_VERS_* macros declare the encoded integer values of all versions used so
61 * far. DT_VERS_LATEST must correspond to the latest version value among all
62 * versions exported by the D compiler. DT_VERS_STRING must be an ASCII string
63 * that contains DT_VERS_LATEST within it along with any suffixes (e.g. Beta).
64 * You must update DT_VERS_LATEST and DT_VERS_STRING when adding a new version,
65 * and then add the new version to the _dtrace_versions[] array declared below.
66 * Refer to the Solaris Dynamic Tracing Guide Stability and Versioning chapters
67 * respectively for an explanation of these DTrace features and their values.
68 *
69 * NOTE: Although the DTrace versioning scheme supports the labeling and
70 * introduction of incompatible changes (e.g. dropping an interface in a
71 * major release), the libdtrace code does not currently support this.
72 * All versions are assumed to strictly inherit from one another. If
73 * we ever need to provide divergent interfaces, this will need work.
74 */
75 #define DT_ATTR_STABCMN { DTRACE_STABILITY_STABLE, \
76 DTRACE_STABILITY_STABLE, DTRACE_CLASS_COMMON }
77
78 #define DT_ATTR_EVOLCMN { DTRACE_STABILITY_EVOLVING, \
79 DTRACE_STABILITY_EVOLVING, DTRACE_CLASS_COMMON \
80 }
81
82 /*
83 * The version number should be increased for every customer visible release
84 * of DTrace. The major number should be incremented when a fundamental
85 * change has been made that would affect all consumers, and would reflect
86 * sweeping changes to DTrace or the D language. The minor number should be
87 * incremented when a change is introduced that could break scripts that had
88 * previously worked; for example, adding a new built-in variable could break
89 * a script which was already using that identifier. The micro number should
90 * be changed when introducing functionality changes or major bug fixes that
91 * do not affect backward compatibility -- this is merely to make capabilities
92 * easily determined from the version number. Minor bugs do not require any
93 * modification to the version number.
94 */
95 #define DT_VERS_1_0 DT_VERSION_NUMBER(1, 0, 0)
96 #define DT_VERS_1_1 DT_VERSION_NUMBER(1, 1, 0)
97 #define DT_VERS_1_2 DT_VERSION_NUMBER(1, 2, 0)
98 #define DT_VERS_1_2_1 DT_VERSION_NUMBER(1, 2, 1)
99 #define DT_VERS_1_2_2 DT_VERSION_NUMBER(1, 2, 2)
100 #define DT_VERS_1_3 DT_VERSION_NUMBER(1, 3, 0)
101 #define DT_VERS_1_4 DT_VERSION_NUMBER(1, 4, 0)
102 #define DT_VERS_1_4_1 DT_VERSION_NUMBER(1, 4, 1)
103 #define DT_VERS_1_5 DT_VERSION_NUMBER(1, 5, 0)
104 #define DT_VERS_1_6 DT_VERSION_NUMBER(1, 6, 0)
105 #define DT_VERS_1_6_1 DT_VERSION_NUMBER(1, 6, 1)
106 #define DT_VERS_1_6_2 DT_VERSION_NUMBER(1, 6, 2)
107 #define DT_VERS_1_6_3 DT_VERSION_NUMBER(1, 6, 3)
108 #define DT_VERS_1_7 DT_VERSION_NUMBER(1, 7, 0)
109 #define DT_VERS_1_7_1 DT_VERSION_NUMBER(1, 7, 1)
110 #define DT_VERS_1_8 DT_VERSION_NUMBER(1, 8, 0)
111 #define DT_VERS_1_8_1 DT_VERSION_NUMBER(1, 8, 1)
112 #define DT_VERS_1_9 DT_VERSION_NUMBER(1, 9, 0)
113 #define DT_VERS_1_9_1 DT_VERSION_NUMBER(1, 9, 1)
114 #define DT_VERS_1_10 DT_VERSION_NUMBER(1, 10, 0)
115 #define DT_VERS_1_11 DT_VERSION_NUMBER(1, 11, 0)
116 #define DT_VERS_LATEST DT_VERS_1_11
117 #define DT_VERS_STRING "Sun D 1.11"
118
119 const dt_version_t _dtrace_versions[] = {
120 DT_VERS_1_0, /* D API 1.0.0 (PSARC 2001/466) Solaris 10 FCS */
121 DT_VERS_1_1, /* D API 1.1.0 Solaris Express 6/05 */
122 DT_VERS_1_2, /* D API 1.2.0 Solaris 10 Update 1 */
123 DT_VERS_1_2_1, /* D API 1.2.1 Solaris Express 4/06 */
124 DT_VERS_1_2_2, /* D API 1.2.2 Solaris Express 6/06 */
125 DT_VERS_1_3, /* D API 1.3 Solaris Express 10/06 */
126 DT_VERS_1_4, /* D API 1.4 Solaris Express 2/07 */
127 DT_VERS_1_4_1, /* D API 1.4.1 Solaris Express 4/07 */
128 DT_VERS_1_5, /* D API 1.5 Solaris Express 7/07 */
129 DT_VERS_1_6, /* D API 1.6 */
130 DT_VERS_1_6_1, /* D API 1.6.1 */
131 DT_VERS_1_6_2, /* D API 1.6.2 */
132 DT_VERS_1_6_3, /* D API 1.6.3 */
133 DT_VERS_1_7, /* D API 1.7 */
134 DT_VERS_1_7_1, /* D API 1.7.1 */
135 DT_VERS_1_8, /* D API 1.8 */
136 DT_VERS_1_8_1, /* D API 1.8.1 */
137 DT_VERS_1_9, /* D API 1.9 */
138 DT_VERS_1_9_1, /* D API 1.9.1 */
139 DT_VERS_1_10, /* D API 1.10 */
140 DT_VERS_1_11, /* D API 1.11 */
141 0
142 };
143
144 /*
145 * Table of global identifiers. This is used to populate the global identifier
146 * hash when a new dtrace client open occurs. For more info see dt_ident.h.
147 * The global identifiers that represent functions use the dt_idops_func ops
148 * and specify the private data pointer as a prototype string which is parsed
149 * when the identifier is first encountered. These prototypes look like ANSI
150 * C function prototypes except that the special symbol "@" can be used as a
151 * wildcard to represent a single parameter of any type (i.e. any dt_node_t).
152 * The standard "..." notation can also be used to represent varargs. An empty
153 * parameter list is taken to mean void (that is, no arguments are permitted).
154 * A parameter enclosed in square brackets (e.g. "[int]") denotes an optional
155 * argument.
156 */
157 static const dt_ident_t _dtrace_globals[] = {
158 { "alloca", DT_IDENT_FUNC, 0, DIF_SUBR_ALLOCA, DT_ATTR_STABCMN, DT_VERS_1_0,
159 &dt_idops_func, "void *(size_t)" },
160 { "arg0", DT_IDENT_SCALAR, 0, DIF_VAR_ARG0, DT_ATTR_STABCMN, DT_VERS_1_0,
161 &dt_idops_type, "int64_t" },
162 { "arg1", DT_IDENT_SCALAR, 0, DIF_VAR_ARG1, DT_ATTR_STABCMN, DT_VERS_1_0,
163 &dt_idops_type, "int64_t" },
164 { "arg2", DT_IDENT_SCALAR, 0, DIF_VAR_ARG2, DT_ATTR_STABCMN, DT_VERS_1_0,
165 &dt_idops_type, "int64_t" },
166 { "arg3", DT_IDENT_SCALAR, 0, DIF_VAR_ARG3, DT_ATTR_STABCMN, DT_VERS_1_0,
167 &dt_idops_type, "int64_t" },
168 { "arg4", DT_IDENT_SCALAR, 0, DIF_VAR_ARG4, DT_ATTR_STABCMN, DT_VERS_1_0,
169 &dt_idops_type, "int64_t" },
170 { "arg5", DT_IDENT_SCALAR, 0, DIF_VAR_ARG5, DT_ATTR_STABCMN, DT_VERS_1_0,
171 &dt_idops_type, "int64_t" },
172 { "arg6", DT_IDENT_SCALAR, 0, DIF_VAR_ARG6, DT_ATTR_STABCMN, DT_VERS_1_0,
173 &dt_idops_type, "int64_t" },
174 { "arg7", DT_IDENT_SCALAR, 0, DIF_VAR_ARG7, DT_ATTR_STABCMN, DT_VERS_1_0,
175 &dt_idops_type, "int64_t" },
176 { "arg8", DT_IDENT_SCALAR, 0, DIF_VAR_ARG8, DT_ATTR_STABCMN, DT_VERS_1_0,
177 &dt_idops_type, "int64_t" },
178 { "arg9", DT_IDENT_SCALAR, 0, DIF_VAR_ARG9, DT_ATTR_STABCMN, DT_VERS_1_0,
179 &dt_idops_type, "int64_t" },
180 { "args", DT_IDENT_ARRAY, 0, DIF_VAR_ARGS, DT_ATTR_STABCMN, DT_VERS_1_0,
181 &dt_idops_args, NULL },
182 { "avg", DT_IDENT_AGGFUNC, 0, DTRACEAGG_AVG, DT_ATTR_STABCMN, DT_VERS_1_0,
183 &dt_idops_func, "void(@)" },
184 { "basename", DT_IDENT_FUNC, 0, DIF_SUBR_BASENAME, DT_ATTR_STABCMN, DT_VERS_1_0,
185 &dt_idops_func, "string(const char *)" },
186 { "bcopy", DT_IDENT_FUNC, 0, DIF_SUBR_BCOPY, DT_ATTR_STABCMN, DT_VERS_1_0,
187 &dt_idops_func, "void(void *, void *, size_t)" },
188 { "breakpoint", DT_IDENT_ACTFUNC, 0, DT_ACT_BREAKPOINT,
189 DT_ATTR_STABCMN, DT_VERS_1_0,
190 &dt_idops_func, "void()" },
191 { "caller", DT_IDENT_SCALAR, 0, DIF_VAR_CALLER, DT_ATTR_STABCMN, DT_VERS_1_0,
192 &dt_idops_type, "uintptr_t" },
193 { "chill", DT_IDENT_ACTFUNC, 0, DT_ACT_CHILL, DT_ATTR_STABCMN, DT_VERS_1_0,
194 &dt_idops_func, "void(int)" },
195 { "cleanpath", DT_IDENT_FUNC, 0, DIF_SUBR_CLEANPATH, DT_ATTR_STABCMN,
196 DT_VERS_1_0, &dt_idops_func, "string(const char *)" },
197 { "clear", DT_IDENT_ACTFUNC, 0, DT_ACT_CLEAR, DT_ATTR_STABCMN, DT_VERS_1_0,
198 &dt_idops_func, "void(...)" },
199 { "commit", DT_IDENT_ACTFUNC, 0, DT_ACT_COMMIT, DT_ATTR_STABCMN, DT_VERS_1_0,
200 &dt_idops_func, "void(int)" },
201 { "copyin", DT_IDENT_FUNC, 0, DIF_SUBR_COPYIN, DT_ATTR_STABCMN, DT_VERS_1_0,
202 &dt_idops_func, "void *(uintptr_t, size_t)" },
203 { "copyinstr", DT_IDENT_FUNC, 0, DIF_SUBR_COPYINSTR,
204 DT_ATTR_STABCMN, DT_VERS_1_0,
205 &dt_idops_func, "string(uintptr_t, [size_t])" },
206 { "copyinto", DT_IDENT_FUNC, 0, DIF_SUBR_COPYINTO, DT_ATTR_STABCMN,
207 DT_VERS_1_0, &dt_idops_func, "void(uintptr_t, size_t, void *)" },
208 { "copyout", DT_IDENT_FUNC, 0, DIF_SUBR_COPYOUT, DT_ATTR_STABCMN, DT_VERS_1_0,
209 &dt_idops_func, "void(void *, uintptr_t, size_t)" },
210 { "copyoutstr", DT_IDENT_FUNC, 0, DIF_SUBR_COPYOUTSTR,
211 DT_ATTR_STABCMN, DT_VERS_1_0,
212 &dt_idops_func, "void(char *, uintptr_t, size_t)" },
213 { "count", DT_IDENT_AGGFUNC, 0, DTRACEAGG_COUNT, DT_ATTR_STABCMN, DT_VERS_1_0,
214 &dt_idops_func, "void()" },
215 { "curthread", DT_IDENT_SCALAR, 0, DIF_VAR_CURTHREAD,
216 { DTRACE_STABILITY_STABLE, DTRACE_STABILITY_PRIVATE,
217 DTRACE_CLASS_COMMON }, DT_VERS_1_0,
218 &dt_idops_type, "genunix`kthread_t *" },
219 { "ddi_pathname", DT_IDENT_FUNC, 0, DIF_SUBR_DDI_PATHNAME,
220 DT_ATTR_EVOLCMN, DT_VERS_1_0,
221 &dt_idops_func, "string(void *, int64_t)" },
222 { "denormalize", DT_IDENT_ACTFUNC, 0, DT_ACT_DENORMALIZE, DT_ATTR_STABCMN,
223 DT_VERS_1_0, &dt_idops_func, "void(...)" },
224 { "dirname", DT_IDENT_FUNC, 0, DIF_SUBR_DIRNAME, DT_ATTR_STABCMN, DT_VERS_1_0,
225 &dt_idops_func, "string(const char *)" },
226 { "discard", DT_IDENT_ACTFUNC, 0, DT_ACT_DISCARD, DT_ATTR_STABCMN, DT_VERS_1_0,
227 &dt_idops_func, "void(int)" },
228 { "epid", DT_IDENT_SCALAR, 0, DIF_VAR_EPID, DT_ATTR_STABCMN, DT_VERS_1_0,
229 &dt_idops_type, "uint_t" },
230 { "errno", DT_IDENT_SCALAR, 0, DIF_VAR_ERRNO, DT_ATTR_STABCMN, DT_VERS_1_0,
231 &dt_idops_type, "int" },
232 { "execname", DT_IDENT_SCALAR, 0, DIF_VAR_EXECNAME,
233 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" },
234 { "exit", DT_IDENT_ACTFUNC, 0, DT_ACT_EXIT, DT_ATTR_STABCMN, DT_VERS_1_0,
235 &dt_idops_func, "void(int)" },
236 { "freopen", DT_IDENT_ACTFUNC, 0, DT_ACT_FREOPEN, DT_ATTR_STABCMN,
237 DT_VERS_1_1, &dt_idops_func, "void(@, ...)" },
238 { "ftruncate", DT_IDENT_ACTFUNC, 0, DT_ACT_FTRUNCATE, DT_ATTR_STABCMN,
239 DT_VERS_1_0, &dt_idops_func, "void()" },
240 { "func", DT_IDENT_ACTFUNC, 0, DT_ACT_SYM, DT_ATTR_STABCMN,
241 DT_VERS_1_2, &dt_idops_func, "_symaddr(uintptr_t)" },
242 { "getmajor", DT_IDENT_FUNC, 0, DIF_SUBR_GETMAJOR,
243 DT_ATTR_EVOLCMN, DT_VERS_1_0,
244 &dt_idops_func, "genunix`major_t(genunix`dev_t)" },
245 { "getminor", DT_IDENT_FUNC, 0, DIF_SUBR_GETMINOR,
246 DT_ATTR_EVOLCMN, DT_VERS_1_0,
247 &dt_idops_func, "genunix`minor_t(genunix`dev_t)" },
248 { "htonl", DT_IDENT_FUNC, 0, DIF_SUBR_HTONL, DT_ATTR_EVOLCMN, DT_VERS_1_3,
249 &dt_idops_func, "uint32_t(uint32_t)" },
250 { "htonll", DT_IDENT_FUNC, 0, DIF_SUBR_HTONLL, DT_ATTR_EVOLCMN, DT_VERS_1_3,
251 &dt_idops_func, "uint64_t(uint64_t)" },
252 { "htons", DT_IDENT_FUNC, 0, DIF_SUBR_HTONS, DT_ATTR_EVOLCMN, DT_VERS_1_3,
253 &dt_idops_func, "uint16_t(uint16_t)" },
254 { "getf", DT_IDENT_FUNC, 0, DIF_SUBR_GETF, DT_ATTR_STABCMN, DT_VERS_1_10,
255 &dt_idops_func, "file_t *(int)" },
256 { "gid", DT_IDENT_SCALAR, 0, DIF_VAR_GID, DT_ATTR_STABCMN, DT_VERS_1_0,
257 &dt_idops_type, "gid_t" },
258 { "id", DT_IDENT_SCALAR, 0, DIF_VAR_ID, DT_ATTR_STABCMN, DT_VERS_1_0,
259 &dt_idops_type, "uint_t" },
260 { "index", DT_IDENT_FUNC, 0, DIF_SUBR_INDEX, DT_ATTR_STABCMN, DT_VERS_1_1,
261 &dt_idops_func, "int(const char *, const char *, [int])" },
262 { "inet_ntoa", DT_IDENT_FUNC, 0, DIF_SUBR_INET_NTOA, DT_ATTR_STABCMN,
263 DT_VERS_1_5, &dt_idops_func, "string(ipaddr_t *)" },
264 { "inet_ntoa6", DT_IDENT_FUNC, 0, DIF_SUBR_INET_NTOA6, DT_ATTR_STABCMN,
265 DT_VERS_1_5, &dt_idops_func, "string(in6_addr_t *)" },
266 { "inet_ntop", DT_IDENT_FUNC, 0, DIF_SUBR_INET_NTOP, DT_ATTR_STABCMN,
267 DT_VERS_1_5, &dt_idops_func, "string(int, void *)" },
268 { "ipl", DT_IDENT_SCALAR, 0, DIF_VAR_IPL, DT_ATTR_STABCMN, DT_VERS_1_0,
269 &dt_idops_type, "uint_t" },
270 { "json", DT_IDENT_FUNC, 0, DIF_SUBR_JSON, DT_ATTR_STABCMN, DT_VERS_1_11,
271 &dt_idops_func, "string(const char *, const char *)" },
272 { "jstack", DT_IDENT_ACTFUNC, 0, DT_ACT_JSTACK, DT_ATTR_STABCMN, DT_VERS_1_0,
273 &dt_idops_func, "stack(...)" },
274 { "lltostr", DT_IDENT_FUNC, 0, DIF_SUBR_LLTOSTR, DT_ATTR_STABCMN, DT_VERS_1_0,
275 &dt_idops_func, "string(int64_t, [int])" },
276 { "llquantize", DT_IDENT_AGGFUNC, 0, DTRACEAGG_LLQUANTIZE, DT_ATTR_STABCMN,
277 DT_VERS_1_7, &dt_idops_func,
278 "void(@, int32_t, int32_t, int32_t, int32_t, ...)" },
279 { "lquantize", DT_IDENT_AGGFUNC, 0, DTRACEAGG_LQUANTIZE,
280 DT_ATTR_STABCMN, DT_VERS_1_0,
281 &dt_idops_func, "void(@, int32_t, int32_t, ...)" },
282 { "max", DT_IDENT_AGGFUNC, 0, DTRACEAGG_MAX, DT_ATTR_STABCMN, DT_VERS_1_0,
283 &dt_idops_func, "void(@)" },
284 { "min", DT_IDENT_AGGFUNC, 0, DTRACEAGG_MIN, DT_ATTR_STABCMN, DT_VERS_1_0,
285 &dt_idops_func, "void(@)" },
286 { "mod", DT_IDENT_ACTFUNC, 0, DT_ACT_MOD, DT_ATTR_STABCMN,
287 DT_VERS_1_2, &dt_idops_func, "_symaddr(uintptr_t)" },
288 { "msgdsize", DT_IDENT_FUNC, 0, DIF_SUBR_MSGDSIZE,
289 DT_ATTR_STABCMN, DT_VERS_1_0,
290 &dt_idops_func, "size_t(mblk_t *)" },
291 { "msgsize", DT_IDENT_FUNC, 0, DIF_SUBR_MSGSIZE,
292 DT_ATTR_STABCMN, DT_VERS_1_0,
293 &dt_idops_func, "size_t(mblk_t *)" },
294 { "mutex_owned", DT_IDENT_FUNC, 0, DIF_SUBR_MUTEX_OWNED,
295 DT_ATTR_EVOLCMN, DT_VERS_1_0,
296 &dt_idops_func, "int(genunix`kmutex_t *)" },
297 { "mutex_owner", DT_IDENT_FUNC, 0, DIF_SUBR_MUTEX_OWNER,
298 DT_ATTR_EVOLCMN, DT_VERS_1_0,
299 &dt_idops_func, "genunix`kthread_t *(genunix`kmutex_t *)" },
300 { "mutex_type_adaptive", DT_IDENT_FUNC, 0, DIF_SUBR_MUTEX_TYPE_ADAPTIVE,
301 DT_ATTR_EVOLCMN, DT_VERS_1_0,
302 &dt_idops_func, "int(genunix`kmutex_t *)" },
303 { "mutex_type_spin", DT_IDENT_FUNC, 0, DIF_SUBR_MUTEX_TYPE_SPIN,
304 DT_ATTR_EVOLCMN, DT_VERS_1_0,
305 &dt_idops_func, "int(genunix`kmutex_t *)" },
306 { "ntohl", DT_IDENT_FUNC, 0, DIF_SUBR_NTOHL, DT_ATTR_EVOLCMN, DT_VERS_1_3,
307 &dt_idops_func, "uint32_t(uint32_t)" },
308 { "ntohll", DT_IDENT_FUNC, 0, DIF_SUBR_NTOHLL, DT_ATTR_EVOLCMN, DT_VERS_1_3,
309 &dt_idops_func, "uint64_t(uint64_t)" },
310 { "ntohs", DT_IDENT_FUNC, 0, DIF_SUBR_NTOHS, DT_ATTR_EVOLCMN, DT_VERS_1_3,
311 &dt_idops_func, "uint16_t(uint16_t)" },
312 { "normalize", DT_IDENT_ACTFUNC, 0, DT_ACT_NORMALIZE, DT_ATTR_STABCMN,
313 DT_VERS_1_0, &dt_idops_func, "void(...)" },
314 { "panic", DT_IDENT_ACTFUNC, 0, DT_ACT_PANIC, DT_ATTR_STABCMN, DT_VERS_1_0,
315 &dt_idops_func, "void()" },
316 { "pid", DT_IDENT_SCALAR, 0, DIF_VAR_PID, DT_ATTR_STABCMN, DT_VERS_1_0,
317 &dt_idops_type, "pid_t" },
318 { "ppid", DT_IDENT_SCALAR, 0, DIF_VAR_PPID, DT_ATTR_STABCMN, DT_VERS_1_0,
319 &dt_idops_type, "pid_t" },
320 { "print", DT_IDENT_ACTFUNC, 0, DT_ACT_PRINT, DT_ATTR_STABCMN, DT_VERS_1_9,
321 &dt_idops_func, "void(@)" },
322 { "printa", DT_IDENT_ACTFUNC, 0, DT_ACT_PRINTA, DT_ATTR_STABCMN, DT_VERS_1_0,
323 &dt_idops_func, "void(@, ...)" },
324 { "printf", DT_IDENT_ACTFUNC, 0, DT_ACT_PRINTF, DT_ATTR_STABCMN, DT_VERS_1_0,
325 &dt_idops_func, "void(@, ...)" },
326 { "probefunc", DT_IDENT_SCALAR, 0, DIF_VAR_PROBEFUNC,
327 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" },
328 { "probemod", DT_IDENT_SCALAR, 0, DIF_VAR_PROBEMOD,
329 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" },
330 { "probename", DT_IDENT_SCALAR, 0, DIF_VAR_PROBENAME,
331 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" },
332 { "probeprov", DT_IDENT_SCALAR, 0, DIF_VAR_PROBEPROV,
333 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" },
334 { "progenyof", DT_IDENT_FUNC, 0, DIF_SUBR_PROGENYOF,
335 DT_ATTR_STABCMN, DT_VERS_1_0,
336 &dt_idops_func, "int(pid_t)" },
337 { "quantize", DT_IDENT_AGGFUNC, 0, DTRACEAGG_QUANTIZE,
338 DT_ATTR_STABCMN, DT_VERS_1_0,
339 &dt_idops_func, "void(@, ...)" },
340 { "raise", DT_IDENT_ACTFUNC, 0, DT_ACT_RAISE, DT_ATTR_STABCMN, DT_VERS_1_0,
341 &dt_idops_func, "void(int)" },
342 { "rand", DT_IDENT_FUNC, 0, DIF_SUBR_RAND, DT_ATTR_STABCMN, DT_VERS_1_0,
343 &dt_idops_func, "int()" },
344 { "rindex", DT_IDENT_FUNC, 0, DIF_SUBR_RINDEX, DT_ATTR_STABCMN, DT_VERS_1_1,
345 &dt_idops_func, "int(const char *, const char *, [int])" },
346 { "rw_iswriter", DT_IDENT_FUNC, 0, DIF_SUBR_RW_ISWRITER,
347 DT_ATTR_EVOLCMN, DT_VERS_1_0,
348 &dt_idops_func, "int(genunix`krwlock_t *)" },
349 { "rw_read_held", DT_IDENT_FUNC, 0, DIF_SUBR_RW_READ_HELD,
350 DT_ATTR_EVOLCMN, DT_VERS_1_0,
351 &dt_idops_func, "int(genunix`krwlock_t *)" },
352 { "rw_write_held", DT_IDENT_FUNC, 0, DIF_SUBR_RW_WRITE_HELD,
353 DT_ATTR_EVOLCMN, DT_VERS_1_0,
354 &dt_idops_func, "int(genunix`krwlock_t *)" },
355 { "self", DT_IDENT_PTR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0,
356 &dt_idops_type, "void" },
357 { "setopt", DT_IDENT_ACTFUNC, 0, DT_ACT_SETOPT, DT_ATTR_STABCMN,
358 DT_VERS_1_2, &dt_idops_func, "void(const char *, [const char *])" },
359 { "speculate", DT_IDENT_ACTFUNC, 0, DT_ACT_SPECULATE,
360 DT_ATTR_STABCMN, DT_VERS_1_0,
361 &dt_idops_func, "void(int)" },
362 { "speculation", DT_IDENT_FUNC, 0, DIF_SUBR_SPECULATION,
363 DT_ATTR_STABCMN, DT_VERS_1_0,
364 &dt_idops_func, "int()" },
365 { "stack", DT_IDENT_ACTFUNC, 0, DT_ACT_STACK, DT_ATTR_STABCMN, DT_VERS_1_0,
366 &dt_idops_func, "stack(...)" },
367 { "stackdepth", DT_IDENT_SCALAR, 0, DIF_VAR_STACKDEPTH,
368 DT_ATTR_STABCMN, DT_VERS_1_0,
369 &dt_idops_type, "uint32_t" },
370 { "stddev", DT_IDENT_AGGFUNC, 0, DTRACEAGG_STDDEV, DT_ATTR_STABCMN,
371 DT_VERS_1_6, &dt_idops_func, "void(@)" },
372 { "stop", DT_IDENT_ACTFUNC, 0, DT_ACT_STOP, DT_ATTR_STABCMN, DT_VERS_1_0,
373 &dt_idops_func, "void()" },
374 { "strchr", DT_IDENT_FUNC, 0, DIF_SUBR_STRCHR, DT_ATTR_STABCMN, DT_VERS_1_1,
375 &dt_idops_func, "string(const char *, char)" },
376 { "strlen", DT_IDENT_FUNC, 0, DIF_SUBR_STRLEN, DT_ATTR_STABCMN, DT_VERS_1_0,
377 &dt_idops_func, "size_t(const char *)" },
378 { "strjoin", DT_IDENT_FUNC, 0, DIF_SUBR_STRJOIN, DT_ATTR_STABCMN, DT_VERS_1_0,
379 &dt_idops_func, "string(const char *, const char *)" },
380 { "strrchr", DT_IDENT_FUNC, 0, DIF_SUBR_STRRCHR, DT_ATTR_STABCMN, DT_VERS_1_1,
381 &dt_idops_func, "string(const char *, char)" },
382 { "strstr", DT_IDENT_FUNC, 0, DIF_SUBR_STRSTR, DT_ATTR_STABCMN, DT_VERS_1_1,
383 &dt_idops_func, "string(const char *, const char *)" },
384 { "strtok", DT_IDENT_FUNC, 0, DIF_SUBR_STRTOK, DT_ATTR_STABCMN, DT_VERS_1_1,
385 &dt_idops_func, "string(const char *, const char *)" },
386 { "strtoll", DT_IDENT_FUNC, 0, DIF_SUBR_STRTOLL, DT_ATTR_STABCMN, DT_VERS_1_11,
387 &dt_idops_func, "int64_t(const char *, [int])" },
388 { "substr", DT_IDENT_FUNC, 0, DIF_SUBR_SUBSTR, DT_ATTR_STABCMN, DT_VERS_1_1,
389 &dt_idops_func, "string(const char *, int, [int])" },
390 { "sum", DT_IDENT_AGGFUNC, 0, DTRACEAGG_SUM, DT_ATTR_STABCMN, DT_VERS_1_0,
391 &dt_idops_func, "void(@)" },
392 { "sym", DT_IDENT_ACTFUNC, 0, DT_ACT_SYM, DT_ATTR_STABCMN,
393 DT_VERS_1_2, &dt_idops_func, "_symaddr(uintptr_t)" },
394 { "system", DT_IDENT_ACTFUNC, 0, DT_ACT_SYSTEM, DT_ATTR_STABCMN, DT_VERS_1_0,
395 &dt_idops_func, "void(@, ...)" },
396 { "this", DT_IDENT_PTR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0,
397 &dt_idops_type, "void" },
398 { "tid", DT_IDENT_SCALAR, 0, DIF_VAR_TID, DT_ATTR_STABCMN, DT_VERS_1_0,
399 &dt_idops_type, "id_t" },
400 { "timestamp", DT_IDENT_SCALAR, 0, DIF_VAR_TIMESTAMP,
401 DT_ATTR_STABCMN, DT_VERS_1_0,
402 &dt_idops_type, "uint64_t" },
403 { "tolower", DT_IDENT_FUNC, 0, DIF_SUBR_TOLOWER, DT_ATTR_STABCMN, DT_VERS_1_8,
404 &dt_idops_func, "string(const char *)" },
405 { "toupper", DT_IDENT_FUNC, 0, DIF_SUBR_TOUPPER, DT_ATTR_STABCMN, DT_VERS_1_8,
406 &dt_idops_func, "string(const char *)" },
407 { "trace", DT_IDENT_ACTFUNC, 0, DT_ACT_TRACE, DT_ATTR_STABCMN, DT_VERS_1_0,
408 &dt_idops_func, "void(@)" },
409 { "tracemem", DT_IDENT_ACTFUNC, 0, DT_ACT_TRACEMEM,
410 DT_ATTR_STABCMN, DT_VERS_1_0,
411 &dt_idops_func, "void(@, size_t, ...)" },
412 { "trunc", DT_IDENT_ACTFUNC, 0, DT_ACT_TRUNC, DT_ATTR_STABCMN,
413 DT_VERS_1_0, &dt_idops_func, "void(...)" },
414 { "uaddr", DT_IDENT_ACTFUNC, 0, DT_ACT_UADDR, DT_ATTR_STABCMN,
415 DT_VERS_1_2, &dt_idops_func, "_usymaddr(uintptr_t)" },
416 { "ucaller", DT_IDENT_SCALAR, 0, DIF_VAR_UCALLER, DT_ATTR_STABCMN,
417 DT_VERS_1_2, &dt_idops_type, "uint64_t" },
418 { "ufunc", DT_IDENT_ACTFUNC, 0, DT_ACT_USYM, DT_ATTR_STABCMN,
419 DT_VERS_1_2, &dt_idops_func, "_usymaddr(uintptr_t)" },
420 { "uid", DT_IDENT_SCALAR, 0, DIF_VAR_UID, DT_ATTR_STABCMN, DT_VERS_1_0,
421 &dt_idops_type, "uid_t" },
422 { "umod", DT_IDENT_ACTFUNC, 0, DT_ACT_UMOD, DT_ATTR_STABCMN,
423 DT_VERS_1_2, &dt_idops_func, "_usymaddr(uintptr_t)" },
424 { "uregs", DT_IDENT_ARRAY, 0, DIF_VAR_UREGS, DT_ATTR_STABCMN, DT_VERS_1_0,
425 &dt_idops_regs, NULL },
426 { "ustack", DT_IDENT_ACTFUNC, 0, DT_ACT_USTACK, DT_ATTR_STABCMN, DT_VERS_1_0,
427 &dt_idops_func, "stack(...)" },
428 { "ustackdepth", DT_IDENT_SCALAR, 0, DIF_VAR_USTACKDEPTH,
429 DT_ATTR_STABCMN, DT_VERS_1_2,
430 &dt_idops_type, "uint32_t" },
431 { "usym", DT_IDENT_ACTFUNC, 0, DT_ACT_USYM, DT_ATTR_STABCMN,
432 DT_VERS_1_2, &dt_idops_func, "_usymaddr(uintptr_t)" },
433 { "vmregs", DT_IDENT_ARRAY, 0, DIF_VAR_VMREGS, DT_ATTR_STABCMN, DT_VERS_1_7,
434 &dt_idops_regs, NULL },
435 { "vtimestamp", DT_IDENT_SCALAR, 0, DIF_VAR_VTIMESTAMP,
436 DT_ATTR_STABCMN, DT_VERS_1_0,
437 &dt_idops_type, "uint64_t" },
438 { "walltimestamp", DT_IDENT_SCALAR, 0, DIF_VAR_WALLTIMESTAMP,
439 DT_ATTR_STABCMN, DT_VERS_1_0,
440 &dt_idops_type, "int64_t" },
441 { "zonename", DT_IDENT_SCALAR, 0, DIF_VAR_ZONENAME,
442 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" },
443 { NULL, 0, 0, 0, { 0, 0, 0 }, 0, NULL, NULL }
444 };
445
446 /*
447 * Tables of ILP32 intrinsic integer and floating-point type templates to use
448 * to populate the dynamic "C" CTF type container.
449 */
450 static const dt_intrinsic_t _dtrace_intrinsics_32[] = {
451 { "void", { CTF_INT_SIGNED, 0, 0 }, CTF_K_INTEGER },
452 { "signed", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER },
453 { "unsigned", { 0, 0, 32 }, CTF_K_INTEGER },
454 { "char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER },
455 { "short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER },
456 { "int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER },
457 { "long", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER },
458 { "long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER },
459 { "signed char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER },
460 { "signed short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER },
461 { "signed int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER },
462 { "signed long", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER },
463 { "signed long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER },
464 { "unsigned char", { CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER },
465 { "unsigned short", { 0, 0, 16 }, CTF_K_INTEGER },
466 { "unsigned int", { 0, 0, 32 }, CTF_K_INTEGER },
467 { "unsigned long", { 0, 0, 32 }, CTF_K_INTEGER },
468 { "unsigned long long", { 0, 0, 64 }, CTF_K_INTEGER },
469 { "_Bool", { CTF_INT_BOOL, 0, 8 }, CTF_K_INTEGER },
470 { "float", { CTF_FP_SINGLE, 0, 32 }, CTF_K_FLOAT },
471 { "double", { CTF_FP_DOUBLE, 0, 64 }, CTF_K_FLOAT },
472 { "long double", { CTF_FP_LDOUBLE, 0, 128 }, CTF_K_FLOAT },
473 { "float imaginary", { CTF_FP_IMAGRY, 0, 32 }, CTF_K_FLOAT },
474 { "double imaginary", { CTF_FP_DIMAGRY, 0, 64 }, CTF_K_FLOAT },
475 { "long double imaginary", { CTF_FP_LDIMAGRY, 0, 128 }, CTF_K_FLOAT },
476 { "float complex", { CTF_FP_CPLX, 0, 64 }, CTF_K_FLOAT },
477 { "double complex", { CTF_FP_DCPLX, 0, 128 }, CTF_K_FLOAT },
478 { "long double complex", { CTF_FP_LDCPLX, 0, 256 }, CTF_K_FLOAT },
479 { NULL, { 0, 0, 0 }, 0 }
480 };
481
482 /*
483 * Tables of LP64 intrinsic integer and floating-point type templates to use
484 * to populate the dynamic "C" CTF type container.
485 */
486 static const dt_intrinsic_t _dtrace_intrinsics_64[] = {
487 { "void", { CTF_INT_SIGNED, 0, 0 }, CTF_K_INTEGER },
488 { "signed", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER },
489 { "unsigned", { 0, 0, 32 }, CTF_K_INTEGER },
490 { "char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER },
491 { "short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER },
492 { "int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER },
493 { "long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER },
494 { "long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER },
495 { "signed char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER },
496 { "signed short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER },
497 { "signed int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER },
498 { "signed long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER },
499 { "signed long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER },
500 { "unsigned char", { CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER },
501 { "unsigned short", { 0, 0, 16 }, CTF_K_INTEGER },
502 { "unsigned int", { 0, 0, 32 }, CTF_K_INTEGER },
503 { "unsigned long", { 0, 0, 64 }, CTF_K_INTEGER },
504 { "unsigned long long", { 0, 0, 64 }, CTF_K_INTEGER },
505 { "_Bool", { CTF_INT_BOOL, 0, 8 }, CTF_K_INTEGER },
506 { "float", { CTF_FP_SINGLE, 0, 32 }, CTF_K_FLOAT },
507 { "double", { CTF_FP_DOUBLE, 0, 64 }, CTF_K_FLOAT },
508 { "long double", { CTF_FP_LDOUBLE, 0, 128 }, CTF_K_FLOAT },
509 { "float imaginary", { CTF_FP_IMAGRY, 0, 32 }, CTF_K_FLOAT },
510 { "double imaginary", { CTF_FP_DIMAGRY, 0, 64 }, CTF_K_FLOAT },
511 { "long double imaginary", { CTF_FP_LDIMAGRY, 0, 128 }, CTF_K_FLOAT },
512 { "float complex", { CTF_FP_CPLX, 0, 64 }, CTF_K_FLOAT },
513 { "double complex", { CTF_FP_DCPLX, 0, 128 }, CTF_K_FLOAT },
514 { "long double complex", { CTF_FP_LDCPLX, 0, 256 }, CTF_K_FLOAT },
515 { NULL, { 0, 0, 0 }, 0 }
516 };
517
518 /*
519 * Tables of ILP32 typedefs to use to populate the dynamic "D" CTF container.
520 * These aliases ensure that D definitions can use typical <sys/types.h> names.
521 */
522 static const dt_typedef_t _dtrace_typedefs_32[] = {
523 { "char", "int8_t" },
524 { "short", "int16_t" },
525 { "int", "int32_t" },
526 { "long long", "int64_t" },
527 { "int", "intptr_t" },
528 { "int", "ssize_t" },
529 { "unsigned char", "uint8_t" },
530 { "unsigned short", "uint16_t" },
531 { "unsigned", "uint32_t" },
532 { "unsigned long long", "uint64_t" },
533 { "unsigned char", "uchar_t" },
534 { "unsigned short", "ushort_t" },
535 { "unsigned", "uint_t" },
536 { "unsigned long", "ulong_t" },
537 { "unsigned long long", "u_longlong_t" },
538 { "int", "ptrdiff_t" },
539 { "unsigned", "uintptr_t" },
540 { "unsigned", "size_t" },
541 { "long", "id_t" },
542 { "long", "pid_t" },
543 { NULL, NULL }
544 };
545
546 /*
547 * Tables of LP64 typedefs to use to populate the dynamic "D" CTF container.
548 * These aliases ensure that D definitions can use typical <sys/types.h> names.
549 */
550 static const dt_typedef_t _dtrace_typedefs_64[] = {
551 { "char", "int8_t" },
552 { "short", "int16_t" },
553 { "int", "int32_t" },
554 { "long", "int64_t" },
555 { "long", "intptr_t" },
556 { "long", "ssize_t" },
557 { "unsigned char", "uint8_t" },
558 { "unsigned short", "uint16_t" },
559 { "unsigned", "uint32_t" },
560 { "unsigned long", "uint64_t" },
561 { "unsigned char", "uchar_t" },
562 { "unsigned short", "ushort_t" },
563 { "unsigned", "uint_t" },
564 { "unsigned long", "ulong_t" },
565 { "unsigned long long", "u_longlong_t" },
566 { "long", "ptrdiff_t" },
567 { "unsigned long", "uintptr_t" },
568 { "unsigned long", "size_t" },
569 { "int", "id_t" },
570 { "int", "pid_t" },
571 { NULL, NULL }
572 };
573
574 /*
575 * Tables of ILP32 integer type templates used to populate the dtp->dt_ints[]
576 * cache when a new dtrace client open occurs. Values are set by dtrace_open().
577 */
578 static const dt_intdesc_t _dtrace_ints_32[] = {
579 { "int", NULL, CTF_ERR, 0x7fffffffULL },
580 { "unsigned int", NULL, CTF_ERR, 0xffffffffULL },
581 { "long", NULL, CTF_ERR, 0x7fffffffULL },
582 { "unsigned long", NULL, CTF_ERR, 0xffffffffULL },
583 { "long long", NULL, CTF_ERR, 0x7fffffffffffffffULL },
584 { "unsigned long long", NULL, CTF_ERR, 0xffffffffffffffffULL }
585 };
586
587 /*
588 * Tables of LP64 integer type templates used to populate the dtp->dt_ints[]
589 * cache when a new dtrace client open occurs. Values are set by dtrace_open().
590 */
591 static const dt_intdesc_t _dtrace_ints_64[] = {
592 { "int", NULL, CTF_ERR, 0x7fffffffULL },
593 { "unsigned int", NULL, CTF_ERR, 0xffffffffULL },
594 { "long", NULL, CTF_ERR, 0x7fffffffffffffffULL },
595 { "unsigned long", NULL, CTF_ERR, 0xffffffffffffffffULL },
596 { "long long", NULL, CTF_ERR, 0x7fffffffffffffffULL },
597 { "unsigned long long", NULL, CTF_ERR, 0xffffffffffffffffULL }
598 };
599
600 /*
601 * Table of macro variable templates used to populate the macro identifier hash
602 * when a new dtrace client open occurs. Values are set by dtrace_update().
603 */
604 static const dt_ident_t _dtrace_macros[] = {
605 { "egid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 },
606 { "euid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 },
607 { "gid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 },
608 { "pid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 },
609 { "pgid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 },
610 { "ppid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 },
611 { "projid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 },
612 { "sid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 },
613 { "taskid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 },
614 { "target", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 },
615 { "uid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 },
616 { NULL, 0, 0, 0, { 0, 0, 0 }, 0 }
617 };
618
619 /*
620 * Hard-wired definition string to be compiled and cached every time a new
621 * DTrace library handle is initialized. This string should only be used to
622 * contain definitions that should be present regardless of DTRACE_O_NOLIBS.
623 */
624 static const char _dtrace_hardwire[] = "\
625 inline long NULL = 0; \n\
626 #pragma D binding \"1.0\" NULL\n\
627 ";
628
629 /*
630 * Default DTrace configuration to use when opening libdtrace DTRACE_O_NODEV.
631 * If DTRACE_O_NODEV is not set, we load the configuration from the kernel.
632 * The use of CTF_MODEL_NATIVE is more subtle than it might appear: we are
633 * relying on the fact that when running dtrace(1M), isaexec will invoke the
634 * binary with the same bitness as the kernel, which is what we want by default
635 * when generating our DIF. The user can override the choice using oflags.
636 */
637 static const dtrace_conf_t _dtrace_conf = {
638 DIF_VERSION, /* dtc_difversion */
639 DIF_DIR_NREGS, /* dtc_difintregs */
640 DIF_DTR_NREGS, /* dtc_diftupregs */
641 CTF_MODEL_NATIVE /* dtc_ctfmodel */
642 };
643
644 const dtrace_attribute_t _dtrace_maxattr = {
645 DTRACE_STABILITY_MAX,
646 DTRACE_STABILITY_MAX,
647 DTRACE_CLASS_MAX
648 };
649
650 const dtrace_attribute_t _dtrace_defattr = {
651 DTRACE_STABILITY_STABLE,
652 DTRACE_STABILITY_STABLE,
653 DTRACE_CLASS_COMMON
654 };
655
656 const dtrace_attribute_t _dtrace_symattr = {
657 DTRACE_STABILITY_PRIVATE,
658 DTRACE_STABILITY_PRIVATE,
659 DTRACE_CLASS_UNKNOWN
660 };
661
662 const dtrace_attribute_t _dtrace_typattr = {
663 DTRACE_STABILITY_PRIVATE,
664 DTRACE_STABILITY_PRIVATE,
665 DTRACE_CLASS_UNKNOWN
666 };
667
668 const dtrace_attribute_t _dtrace_prvattr = {
669 DTRACE_STABILITY_PRIVATE,
670 DTRACE_STABILITY_PRIVATE,
671 DTRACE_CLASS_UNKNOWN
672 };
673
674 const dtrace_pattr_t _dtrace_prvdesc = {
675 { DTRACE_STABILITY_UNSTABLE, DTRACE_STABILITY_UNSTABLE, DTRACE_CLASS_COMMON },
676 { DTRACE_STABILITY_UNSTABLE, DTRACE_STABILITY_UNSTABLE, DTRACE_CLASS_COMMON },
677 { DTRACE_STABILITY_UNSTABLE, DTRACE_STABILITY_UNSTABLE, DTRACE_CLASS_COMMON },
678 { DTRACE_STABILITY_UNSTABLE, DTRACE_STABILITY_UNSTABLE, DTRACE_CLASS_COMMON },
679 { DTRACE_STABILITY_UNSTABLE, DTRACE_STABILITY_UNSTABLE, DTRACE_CLASS_COMMON },
680 };
681
682 const char *_dtrace_defcpp = "/usr/ccs/lib/cpp"; /* default cpp(1) to invoke */
683 const char *_dtrace_defld = "/usr/ccs/bin/ld"; /* default ld(1) to invoke */
684
685 const char *_dtrace_libdir = "/usr/lib/dtrace"; /* default library directory */
686 const char *_dtrace_provdir = "/dev/dtrace/provider"; /* provider directory */
687
688 int _dtrace_strbuckets = 211; /* default number of hash buckets (prime) */
689 int _dtrace_intbuckets = 256; /* default number of integer buckets (Pof2) */
690 uint_t _dtrace_strsize = 256; /* default size of string intrinsic type */
691 uint_t _dtrace_stkindent = 14; /* default whitespace indent for stack/ustack */
692 uint_t _dtrace_pidbuckets = 64; /* default number of pid hash buckets */
693 uint_t _dtrace_pidlrulim = 8; /* default number of pid handles to cache */
694 size_t _dtrace_bufsize = 512; /* default dt_buf_create() size */
695 int _dtrace_argmax = 32; /* default maximum number of probe arguments */
696
697 int _dtrace_debug = 0; /* debug messages enabled (off) */
698 const char *const _dtrace_version = DT_VERS_STRING; /* API version string */
699 int _dtrace_rdvers = RD_VERSION; /* rtld_db feature version */
700
701 typedef struct dt_fdlist {
702 int *df_fds; /* array of provider driver file descriptors */
703 uint_t df_ents; /* number of valid elements in df_fds[] */
704 uint_t df_size; /* size of df_fds[] */
705 } dt_fdlist_t;
706
707 #pragma init(_dtrace_init)
708 void
709 _dtrace_init(void)
710 {
711 _dtrace_debug = getenv("DTRACE_DEBUG") != NULL;
712
713 for (; _dtrace_rdvers > 0; _dtrace_rdvers--) {
714 if (rd_init(_dtrace_rdvers) == RD_OK)
715 break;
716 }
717 }
718
719 static dtrace_hdl_t *
720 set_open_errno(dtrace_hdl_t *dtp, int *errp, int err)
721 {
722 if (dtp != NULL)
723 dtrace_close(dtp);
724 if (errp != NULL)
725 *errp = err;
726 return (NULL);
727 }
728
729 static void
730 dt_provmod_open(dt_provmod_t **provmod, dt_fdlist_t *dfp)
731 {
732 dt_provmod_t *prov;
733 char path[PATH_MAX];
734 struct dirent *dp, *ep;
735 DIR *dirp;
736 int fd;
737
738 if ((dirp = opendir(_dtrace_provdir)) == NULL)
739 return; /* failed to open directory; just skip it */
740
741 ep = alloca(sizeof (struct dirent) + PATH_MAX + 1);
742 bzero(ep, sizeof (struct dirent) + PATH_MAX + 1);
743
744 while (readdir_r(dirp, ep, &dp) == 0 && dp != NULL) {
745 if (dp->d_name[0] == '.')
746 continue; /* skip "." and ".." */
747
748 if (dfp->df_ents == dfp->df_size) {
749 uint_t size = dfp->df_size ? dfp->df_size * 2 : 16;
750 int *fds = realloc(dfp->df_fds, size * sizeof (int));
751
752 if (fds == NULL)
753 break; /* skip the rest of this directory */
754
755 dfp->df_fds = fds;
756 dfp->df_size = size;
757 }
758
759 (void) snprintf(path, sizeof (path), "%s/%s",
760 _dtrace_provdir, dp->d_name);
761
762 if ((fd = open(path, O_RDONLY)) == -1)
763 continue; /* failed to open driver; just skip it */
764
765 if (((prov = malloc(sizeof (dt_provmod_t))) == NULL) ||
766 (prov->dp_name = malloc(strlen(dp->d_name) + 1)) == NULL) {
767 free(prov);
768 (void) close(fd);
769 break;
770 }
771
772 (void) strcpy(prov->dp_name, dp->d_name);
773 prov->dp_next = *provmod;
774 *provmod = prov;
775
776 dt_dprintf("opened provider %s\n", dp->d_name);
777 dfp->df_fds[dfp->df_ents++] = fd;
778 }
779
780 (void) closedir(dirp);
781 }
782
783 static void
784 dt_provmod_destroy(dt_provmod_t **provmod)
785 {
786 dt_provmod_t *next, *current;
787
788 for (current = *provmod; current != NULL; current = next) {
789 next = current->dp_next;
790 free(current->dp_name);
791 free(current);
792 }
793
794 *provmod = NULL;
795 }
796
797 static const char *
798 dt_get_sysinfo(int cmd, char *buf, size_t len)
799 {
800 ssize_t rv = sysinfo(cmd, buf, len);
801 char *p = buf;
802
803 if (rv < 0 || rv > len)
804 (void) snprintf(buf, len, "%s", "Unknown");
805
806 while ((p = strchr(p, '.')) != NULL)
807 *p++ = '_';
808
809 return (buf);
810 }
811
812 static dtrace_hdl_t *
813 dt_vopen(int version, int flags, int *errp,
814 const dtrace_vector_t *vector, void *arg)
815 {
816 dtrace_hdl_t *dtp = NULL;
817 int dtfd = -1, ftfd = -1, fterr = 0;
818 dtrace_prog_t *pgp;
819 dt_module_t *dmp;
820 dt_provmod_t *provmod = NULL;
821 int i, err;
822 struct rlimit rl;
823
824 const dt_intrinsic_t *dinp;
825 const dt_typedef_t *dtyp;
826 const dt_ident_t *idp;
827
828 dtrace_typeinfo_t dtt;
829 ctf_funcinfo_t ctc;
830 ctf_arinfo_t ctr;
831
832 dt_fdlist_t df = { NULL, 0, 0 };
833
834 char isadef[32], utsdef[32];
835 char s1[64], s2[64];
836
837 if (version <= 0)
838 return (set_open_errno(dtp, errp, EINVAL));
839
840 if (version > DTRACE_VERSION)
841 return (set_open_errno(dtp, errp, EDT_VERSION));
842
843 if (version < DTRACE_VERSION) {
844 /*
845 * Currently, increasing the library version number is used to
846 * denote a binary incompatible change. That is, a consumer
847 * of the library cannot run on a version of the library with
848 * a higher DTRACE_VERSION number than the consumer compiled
849 * against. Once the library API has been committed to,
850 * backwards binary compatibility will be required; at that
851 * time, this check should change to return EDT_OVERSION only
852 * if the specified version number is less than the version
853 * number at the time of interface commitment.
854 */
855 return (set_open_errno(dtp, errp, EDT_OVERSION));
856 }
857
858 if (flags & ~DTRACE_O_MASK)
859 return (set_open_errno(dtp, errp, EINVAL));
860
861 if ((flags & DTRACE_O_LP64) && (flags & DTRACE_O_ILP32))
862 return (set_open_errno(dtp, errp, EINVAL));
863
864 if (vector == NULL && arg != NULL)
865 return (set_open_errno(dtp, errp, EINVAL));
866
867 if (elf_version(EV_CURRENT) == EV_NONE)
868 return (set_open_errno(dtp, errp, EDT_ELFVERSION));
869
870 if (vector != NULL || (flags & DTRACE_O_NODEV))
871 goto alloc; /* do not attempt to open dtrace device */
872
873 /*
874 * Before we get going, crank our limit on file descriptors up to the
875 * hard limit. This is to allow for the fact that libproc keeps file
876 * descriptors to objects open for the lifetime of the proc handle;
877 * without raising our hard limit, we would have an acceptably small
878 * bound on the number of processes that we could concurrently
879 * instrument with the pid provider.
880 */
881 if (getrlimit(RLIMIT_NOFILE, &rl) == 0) {
882 rl.rlim_cur = rl.rlim_max;
883 (void) setrlimit(RLIMIT_NOFILE, &rl);
884 }
885
886 /*
887 * Get the device path of each of the providers. We hold them open
888 * in the df.df_fds list until we open the DTrace driver itself,
889 * allowing us to see all of the probes provided on this system. Once
890 * we have the DTrace driver open, we can safely close all the providers
891 * now that they have registered with the framework.
892 */
893 dt_provmod_open(&provmod, &df);
894
895 dtfd = open("/dev/dtrace/dtrace", O_RDWR);
896 err = errno; /* save errno from opening dtfd */
897
898 ftfd = open("/dev/dtrace/provider/fasttrap", O_RDWR);
899 fterr = ftfd == -1 ? errno : 0; /* save errno from open ftfd */
900
901 while (df.df_ents-- != 0)
902 (void) close(df.df_fds[df.df_ents]);
903
904 free(df.df_fds);
905
906 /*
907 * If we failed to open the dtrace device, fail dtrace_open().
908 * We convert some kernel errnos to custom libdtrace errnos to
909 * improve the resulting message from the usual strerror().
910 */
911 if (dtfd == -1) {
912 dt_provmod_destroy(&provmod);
913 switch (err) {
914 case ENOENT:
915 err = EDT_NOENT;
916 break;
917 case EBUSY:
918 err = EDT_BUSY;
919 break;
920 case EACCES:
921 err = EDT_ACCESS;
922 break;
923 }
924 return (set_open_errno(dtp, errp, err));
925 }
926
927 (void) fcntl(dtfd, F_SETFD, FD_CLOEXEC);
928 (void) fcntl(ftfd, F_SETFD, FD_CLOEXEC);
929
930 alloc:
931 if ((dtp = malloc(sizeof (dtrace_hdl_t))) == NULL)
932 return (set_open_errno(dtp, errp, EDT_NOMEM));
933
934 bzero(dtp, sizeof (dtrace_hdl_t));
935 dtp->dt_oflags = flags;
936 dtp->dt_prcmode = DT_PROC_STOP_PREINIT;
937 dtp->dt_linkmode = DT_LINK_KERNEL;
938 dtp->dt_linktype = DT_LTYP_ELF;
939 dtp->dt_xlatemode = DT_XL_STATIC;
940 dtp->dt_stdcmode = DT_STDC_XA;
941 dtp->dt_version = version;
942 dtp->dt_fd = dtfd;
943 dtp->dt_ftfd = ftfd;
944 dtp->dt_fterr = fterr;
945 dtp->dt_cdefs_fd = -1;
946 dtp->dt_ddefs_fd = -1;
947 dtp->dt_stdout_fd = -1;
948 dtp->dt_modbuckets = _dtrace_strbuckets;
949 dtp->dt_mods = calloc(dtp->dt_modbuckets, sizeof (dt_module_t *));
950 dtp->dt_provbuckets = _dtrace_strbuckets;
951 dtp->dt_provs = calloc(dtp->dt_provbuckets, sizeof (dt_provider_t *));
952 dt_proc_init(dtp);
953 dtp->dt_vmax = DT_VERS_LATEST;
954 dtp->dt_cpp_path = strdup(_dtrace_defcpp);
955 dtp->dt_cpp_argv = malloc(sizeof (char *));
956 dtp->dt_cpp_argc = 1;
957 dtp->dt_cpp_args = 1;
958 dtp->dt_ld_path = strdup(_dtrace_defld);
959 dtp->dt_provmod = provmod;
960 dtp->dt_vector = vector;
961 dtp->dt_varg = arg;
962 dt_dof_init(dtp);
963 (void) uname(&dtp->dt_uts);
964
965 if (dtp->dt_mods == NULL || dtp->dt_provs == NULL ||
966 dtp->dt_procs == NULL || dtp->dt_proc_env == NULL ||
967 dtp->dt_ld_path == NULL || dtp->dt_cpp_path == NULL ||
968 dtp->dt_cpp_argv == NULL)
969 return (set_open_errno(dtp, errp, EDT_NOMEM));
970
971 for (i = 0; i < DTRACEOPT_MAX; i++)
972 dtp->dt_options[i] = DTRACEOPT_UNSET;
973
974 dtp->dt_cpp_argv[0] = (char *)strbasename(dtp->dt_cpp_path);
975
976 (void) snprintf(isadef, sizeof (isadef), "-D__SUNW_D_%u",
977 (uint_t)(sizeof (void *) * NBBY));
978
979 (void) snprintf(utsdef, sizeof (utsdef), "-D__%s_%s",
980 dt_get_sysinfo(SI_SYSNAME, s1, sizeof (s1)),
981 dt_get_sysinfo(SI_RELEASE, s2, sizeof (s2)));
982
983 if (dt_cpp_add_arg(dtp, "-D__sun") == NULL ||
984 dt_cpp_add_arg(dtp, "-D__unix") == NULL ||
985 dt_cpp_add_arg(dtp, "-D__SVR4") == NULL ||
986 dt_cpp_add_arg(dtp, "-D__SUNW_D=1") == NULL ||
987 dt_cpp_add_arg(dtp, isadef) == NULL ||
988 dt_cpp_add_arg(dtp, utsdef) == NULL)
989 return (set_open_errno(dtp, errp, EDT_NOMEM));
990
991 if (flags & DTRACE_O_NODEV)
992 bcopy(&_dtrace_conf, &dtp->dt_conf, sizeof (_dtrace_conf));
993 else if (dt_ioctl(dtp, DTRACEIOC_CONF, &dtp->dt_conf) != 0)
994 return (set_open_errno(dtp, errp, errno));
995
996 if (flags & DTRACE_O_LP64)
997 dtp->dt_conf.dtc_ctfmodel = CTF_MODEL_LP64;
998 else if (flags & DTRACE_O_ILP32)
999 dtp->dt_conf.dtc_ctfmodel = CTF_MODEL_ILP32;
1000
1001 #ifdef __sparc
1002 /*
1003 * On SPARC systems, __sparc is always defined for <sys/isa_defs.h>
1004 * and __sparcv9 is defined if we are doing a 64-bit compile.
1005 */
1006 if (dt_cpp_add_arg(dtp, "-D__sparc") == NULL)
1007 return (set_open_errno(dtp, errp, EDT_NOMEM));
1008
1009 if (dtp->dt_conf.dtc_ctfmodel == CTF_MODEL_LP64 &&
1010 dt_cpp_add_arg(dtp, "-D__sparcv9") == NULL)
1011 return (set_open_errno(dtp, errp, EDT_NOMEM));
1012 #endif
1013
1014 #ifdef __x86
1015 /*
1016 * On x86 systems, __i386 is defined for <sys/isa_defs.h> for 32-bit
1017 * compiles and __amd64 is defined for 64-bit compiles. Unlike SPARC,
1018 * they are defined exclusive of one another (see PSARC 2004/619).
1019 */
1020 if (dtp->dt_conf.dtc_ctfmodel == CTF_MODEL_LP64) {
1021 if (dt_cpp_add_arg(dtp, "-D__amd64") == NULL)
1022 return (set_open_errno(dtp, errp, EDT_NOMEM));
1023 } else {
1024 if (dt_cpp_add_arg(dtp, "-D__i386") == NULL)
1025 return (set_open_errno(dtp, errp, EDT_NOMEM));
1026 }
1027 #endif
1028
1029 if (dtp->dt_conf.dtc_difversion < DIF_VERSION)
1030 return (set_open_errno(dtp, errp, EDT_DIFVERS));
1031
1032 if (dtp->dt_conf.dtc_ctfmodel == CTF_MODEL_ILP32)
1033 bcopy(_dtrace_ints_32, dtp->dt_ints, sizeof (_dtrace_ints_32));
1034 else
1035 bcopy(_dtrace_ints_64, dtp->dt_ints, sizeof (_dtrace_ints_64));
1036
1037 dtp->dt_macros = dt_idhash_create("macro", NULL, 0, UINT_MAX);
1038 dtp->dt_aggs = dt_idhash_create("aggregation", NULL,
1039 DTRACE_AGGVARIDNONE + 1, UINT_MAX);
1040
1041 dtp->dt_globals = dt_idhash_create("global", _dtrace_globals,
1042 DIF_VAR_OTHER_UBASE, DIF_VAR_OTHER_MAX);
1043
1044 dtp->dt_tls = dt_idhash_create("thread local", NULL,
1045 DIF_VAR_OTHER_UBASE, DIF_VAR_OTHER_MAX);
1046
1047 if (dtp->dt_macros == NULL || dtp->dt_aggs == NULL ||
1048 dtp->dt_globals == NULL || dtp->dt_tls == NULL)
1049 return (set_open_errno(dtp, errp, EDT_NOMEM));
1050
1051 /*
1052 * Populate the dt_macros identifier hash table by hand: we can't use
1053 * the dt_idhash_populate() mechanism because we're not yet compiling
1054 * and dtrace_update() needs to immediately reference these idents.
1055 */
1056 for (idp = _dtrace_macros; idp->di_name != NULL; idp++) {
1057 if (dt_idhash_insert(dtp->dt_macros, idp->di_name,
1058 idp->di_kind, idp->di_flags, idp->di_id, idp->di_attr,
1059 idp->di_vers, idp->di_ops ? idp->di_ops : &dt_idops_thaw,
1060 idp->di_iarg, 0) == NULL)
1061 return (set_open_errno(dtp, errp, EDT_NOMEM));
1062 }
1063
1064 /*
1065 * Update the module list using /system/object and load the values for
1066 * the macro variable definitions according to the current process.
1067 */
1068 dtrace_update(dtp);
1069
1070 /*
1071 * Select the intrinsics and typedefs we want based on the data model.
1072 * The intrinsics are under "C". The typedefs are added under "D".
1073 */
1074 if (dtp->dt_conf.dtc_ctfmodel == CTF_MODEL_ILP32) {
1075 dinp = _dtrace_intrinsics_32;
1076 dtyp = _dtrace_typedefs_32;
1077 } else {
1078 dinp = _dtrace_intrinsics_64;
1079 dtyp = _dtrace_typedefs_64;
1080 }
1081
1082 /*
1083 * Create a dynamic CTF container under the "C" scope for intrinsic
1084 * types and types defined in ANSI-C header files that are included.
1085 */
1086 if ((dmp = dtp->dt_cdefs = dt_module_create(dtp, "C")) == NULL)
1087 return (set_open_errno(dtp, errp, EDT_NOMEM));
1088
1089 if ((dmp->dm_ctfp = ctf_create(&dtp->dt_ctferr)) == NULL)
1090 return (set_open_errno(dtp, errp, EDT_CTF));
1091
1092 dt_dprintf("created CTF container for %s (%p)\n",
1093 dmp->dm_name, (void *)dmp->dm_ctfp);
1094
1095 (void) ctf_setmodel(dmp->dm_ctfp, dtp->dt_conf.dtc_ctfmodel);
1096 ctf_setspecific(dmp->dm_ctfp, dmp);
1097
1098 dmp->dm_flags = DT_DM_LOADED; /* fake up loaded bit */
1099 dmp->dm_modid = -1; /* no module ID */
1100
1101 /*
1102 * Fill the dynamic "C" CTF container with all of the intrinsic
1103 * integer and floating-point types appropriate for this data model.
1104 */
1105 for (; dinp->din_name != NULL; dinp++) {
1106 if (dinp->din_kind == CTF_K_INTEGER) {
1107 err = ctf_add_integer(dmp->dm_ctfp, CTF_ADD_ROOT,
1108 dinp->din_name, &dinp->din_data);
1109 } else {
1110 err = ctf_add_float(dmp->dm_ctfp, CTF_ADD_ROOT,
1111 dinp->din_name, &dinp->din_data);
1112 }
1113
1114 if (err == CTF_ERR) {
1115 dt_dprintf("failed to add %s to C container: %s\n",
1116 dinp->din_name, ctf_errmsg(
1117 ctf_errno(dmp->dm_ctfp)));
1118 return (set_open_errno(dtp, errp, EDT_CTF));
1119 }
1120 }
1121
1122 if (ctf_update(dmp->dm_ctfp) != 0) {
1123 dt_dprintf("failed to update C container: %s\n",
1124 ctf_errmsg(ctf_errno(dmp->dm_ctfp)));
1125 return (set_open_errno(dtp, errp, EDT_CTF));
1126 }
1127
1128 /*
1129 * Add intrinsic pointer types that are needed to initialize printf
1130 * format dictionary types (see table in dt_printf.c).
1131 */
1132 (void) ctf_add_pointer(dmp->dm_ctfp, CTF_ADD_ROOT,
1133 ctf_lookup_by_name(dmp->dm_ctfp, "void"));
1134
1135 (void) ctf_add_pointer(dmp->dm_ctfp, CTF_ADD_ROOT,
1136 ctf_lookup_by_name(dmp->dm_ctfp, "char"));
1137
1138 (void) ctf_add_pointer(dmp->dm_ctfp, CTF_ADD_ROOT,
1139 ctf_lookup_by_name(dmp->dm_ctfp, "int"));
1140
1141 if (ctf_update(dmp->dm_ctfp) != 0) {
1142 dt_dprintf("failed to update C container: %s\n",
1143 ctf_errmsg(ctf_errno(dmp->dm_ctfp)));
1144 return (set_open_errno(dtp, errp, EDT_CTF));
1145 }
1146
1147 /*
1148 * Create a dynamic CTF container under the "D" scope for types that
1149 * are defined by the D program itself or on-the-fly by the D compiler.
1150 * The "D" CTF container is a child of the "C" CTF container.
1151 */
1152 if ((dmp = dtp->dt_ddefs = dt_module_create(dtp, "D")) == NULL)
1153 return (set_open_errno(dtp, errp, EDT_NOMEM));
1154
1155 if ((dmp->dm_ctfp = ctf_create(&dtp->dt_ctferr)) == NULL)
1156 return (set_open_errno(dtp, errp, EDT_CTF));
1157
1158 dt_dprintf("created CTF container for %s (%p)\n",
1159 dmp->dm_name, (void *)dmp->dm_ctfp);
1160
1161 (void) ctf_setmodel(dmp->dm_ctfp, dtp->dt_conf.dtc_ctfmodel);
1162 ctf_setspecific(dmp->dm_ctfp, dmp);
1163
1164 dmp->dm_flags = DT_DM_LOADED; /* fake up loaded bit */
1165 dmp->dm_modid = -1; /* no module ID */
1166
1167 if (ctf_import(dmp->dm_ctfp, dtp->dt_cdefs->dm_ctfp) == CTF_ERR) {
1168 dt_dprintf("failed to import D parent container: %s\n",
1169 ctf_errmsg(ctf_errno(dmp->dm_ctfp)));
1170 return (set_open_errno(dtp, errp, EDT_CTF));
1171 }
1172
1173 /*
1174 * Fill the dynamic "D" CTF container with all of the built-in typedefs
1175 * that we need to use for our D variable and function definitions.
1176 * This ensures that basic inttypes.h names are always available to us.
1177 */
1178 for (; dtyp->dty_src != NULL; dtyp++) {
1179 if (ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT,
1180 dtyp->dty_dst, ctf_lookup_by_name(dmp->dm_ctfp,
1181 dtyp->dty_src)) == CTF_ERR) {
1182 dt_dprintf("failed to add typedef %s %s to D "
1183 "container: %s", dtyp->dty_src, dtyp->dty_dst,
1184 ctf_errmsg(ctf_errno(dmp->dm_ctfp)));
1185 return (set_open_errno(dtp, errp, EDT_CTF));
1186 }
1187 }
1188
1189 /*
1190 * Insert a CTF ID corresponding to a pointer to a type of kind
1191 * CTF_K_FUNCTION we can use in the compiler for function pointers.
1192 * CTF treats all function pointers as "int (*)()" so we only need one.
1193 */
1194 ctc.ctc_return = ctf_lookup_by_name(dmp->dm_ctfp, "int");
1195 ctc.ctc_argc = 0;
1196 ctc.ctc_flags = 0;
1197
1198 dtp->dt_type_func = ctf_add_function(dmp->dm_ctfp,
1199 CTF_ADD_ROOT, &ctc, NULL);
1200
1201 dtp->dt_type_fptr = ctf_add_pointer(dmp->dm_ctfp,
1202 CTF_ADD_ROOT, dtp->dt_type_func);
1203
1204 /*
1205 * We also insert CTF definitions for the special D intrinsic types
1206 * string and <DYN> into the D container. The string type is added
1207 * as a typedef of char[n]. The <DYN> type is an alias for void.
1208 * We compare types to these special CTF ids throughout the compiler.
1209 */
1210 ctr.ctr_contents = ctf_lookup_by_name(dmp->dm_ctfp, "char");
1211 ctr.ctr_index = ctf_lookup_by_name(dmp->dm_ctfp, "long");
1212 ctr.ctr_nelems = _dtrace_strsize;
1213
1214 dtp->dt_type_str = ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT,
1215 "string", ctf_add_array(dmp->dm_ctfp, CTF_ADD_ROOT, &ctr));
1216
1217 dtp->dt_type_dyn = ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT,
1218 "<DYN>", ctf_lookup_by_name(dmp->dm_ctfp, "void"));
1219
1220 dtp->dt_type_stack = ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT,
1221 "stack", ctf_lookup_by_name(dmp->dm_ctfp, "void"));
1222
1223 dtp->dt_type_symaddr = ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT,
1224 "_symaddr", ctf_lookup_by_name(dmp->dm_ctfp, "void"));
1225
1226 dtp->dt_type_usymaddr = ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT,
1227 "_usymaddr", ctf_lookup_by_name(dmp->dm_ctfp, "void"));
1228
1229 if (dtp->dt_type_func == CTF_ERR || dtp->dt_type_fptr == CTF_ERR ||
1230 dtp->dt_type_str == CTF_ERR || dtp->dt_type_dyn == CTF_ERR ||
1231 dtp->dt_type_stack == CTF_ERR || dtp->dt_type_symaddr == CTF_ERR ||
1232 dtp->dt_type_usymaddr == CTF_ERR) {
1233 dt_dprintf("failed to add intrinsic to D container: %s\n",
1234 ctf_errmsg(ctf_errno(dmp->dm_ctfp)));
1235 return (set_open_errno(dtp, errp, EDT_CTF));
1236 }
1237
1238 if (ctf_update(dmp->dm_ctfp) != 0) {
1239 dt_dprintf("failed update D container: %s\n",
1240 ctf_errmsg(ctf_errno(dmp->dm_ctfp)));
1241 return (set_open_errno(dtp, errp, EDT_CTF));
1242 }
1243
1244 /*
1245 * Initialize the integer description table used to convert integer
1246 * constants to the appropriate types. Refer to the comments above
1247 * dt_node_int() for a complete description of how this table is used.
1248 */
1249 for (i = 0; i < sizeof (dtp->dt_ints) / sizeof (dtp->dt_ints[0]); i++) {
1250 if (dtrace_lookup_by_type(dtp, DTRACE_OBJ_EVERY,
1251 dtp->dt_ints[i].did_name, &dtt) != 0) {
1252 dt_dprintf("failed to lookup integer type %s: %s\n",
1253 dtp->dt_ints[i].did_name,
1254 dtrace_errmsg(dtp, dtrace_errno(dtp)));
1255 return (set_open_errno(dtp, errp, dtp->dt_errno));
1256 }
1257 dtp->dt_ints[i].did_ctfp = dtt.dtt_ctfp;
1258 dtp->dt_ints[i].did_type = dtt.dtt_type;
1259 }
1260
1261 /*
1262 * Now that we've created the "C" and "D" containers, move them to the
1263 * start of the module list so that these types and symbols are found
1264 * first (for stability) when iterating through the module list.
1265 */
1266 dt_list_delete(&dtp->dt_modlist, dtp->dt_ddefs);
1267 dt_list_prepend(&dtp->dt_modlist, dtp->dt_ddefs);
1268
1269 dt_list_delete(&dtp->dt_modlist, dtp->dt_cdefs);
1270 dt_list_prepend(&dtp->dt_modlist, dtp->dt_cdefs);
1271
1272 if (dt_pfdict_create(dtp) == -1)
1273 return (set_open_errno(dtp, errp, dtp->dt_errno));
1274
1275 /*
1276 * If we are opening libdtrace DTRACE_O_NODEV enable C_ZDEFS by default
1277 * because without /dev/dtrace open, we will not be able to load the
1278 * names and attributes of any providers or probes from the kernel.
1279 */
1280 if (flags & DTRACE_O_NODEV)
1281 dtp->dt_cflags |= DTRACE_C_ZDEFS;
1282
1283 /*
1284 * Load hard-wired inlines into the definition cache by calling the
1285 * compiler on the raw definition string defined above.
1286 */
1287 if ((pgp = dtrace_program_strcompile(dtp, _dtrace_hardwire,
1288 DTRACE_PROBESPEC_NONE, DTRACE_C_EMPTY, 0, NULL)) == NULL) {
1289 dt_dprintf("failed to load hard-wired definitions: %s\n",
1290 dtrace_errmsg(dtp, dtrace_errno(dtp)));
1291 return (set_open_errno(dtp, errp, EDT_HARDWIRE));
1292 }
1293
1294 dt_program_destroy(dtp, pgp);
1295
1296 /*
1297 * Set up the default DTrace library path. Once set, the next call to
1298 * dt_compile() will compile all the libraries. We intentionally defer
1299 * library processing to improve overhead for clients that don't ever
1300 * compile, and to provide better error reporting (because the full
1301 * reporting of compiler errors requires dtrace_open() to succeed).
1302 */
1303 if (dtrace_setopt(dtp, "libdir", _dtrace_libdir) != 0)
1304 return (set_open_errno(dtp, errp, dtp->dt_errno));
1305
1306 return (dtp);
1307 }
1308
1309 dtrace_hdl_t *
1310 dtrace_open(int version, int flags, int *errp)
1311 {
1312 return (dt_vopen(version, flags, errp, NULL, NULL));
1313 }
1314
1315 dtrace_hdl_t *
1316 dtrace_vopen(int version, int flags, int *errp,
1317 const dtrace_vector_t *vector, void *arg)
1318 {
1319 return (dt_vopen(version, flags, errp, vector, arg));
1320 }
1321
1322 void
1323 dtrace_close(dtrace_hdl_t *dtp)
1324 {
1325 dt_ident_t *idp, *ndp;
1326 dt_module_t *dmp;
1327 dt_provider_t *pvp;
1328 dtrace_prog_t *pgp;
1329 dt_xlator_t *dxp;
1330 dt_dirpath_t *dirp;
1331 int i;
1332
1333 if (dtp->dt_procs != NULL)
1334 dt_proc_fini(dtp);
1335
1336 while ((pgp = dt_list_next(&dtp->dt_programs)) != NULL)
1337 dt_program_destroy(dtp, pgp);
1338
1339 while ((dxp = dt_list_next(&dtp->dt_xlators)) != NULL)
1340 dt_xlator_destroy(dtp, dxp);
1341
1342 dt_free(dtp, dtp->dt_xlatormap);
1343
1344 for (idp = dtp->dt_externs; idp != NULL; idp = ndp) {
1345 ndp = idp->di_next;
1346 dt_ident_destroy(idp);
1347 }
1348
1349 if (dtp->dt_macros != NULL)
1350 dt_idhash_destroy(dtp->dt_macros);
1351 if (dtp->dt_aggs != NULL)
1352 dt_idhash_destroy(dtp->dt_aggs);
1353 if (dtp->dt_globals != NULL)
1354 dt_idhash_destroy(dtp->dt_globals);
1355 if (dtp->dt_tls != NULL)
1356 dt_idhash_destroy(dtp->dt_tls);
1357
1358 while ((dmp = dt_list_next(&dtp->dt_modlist)) != NULL)
1359 dt_module_destroy(dtp, dmp);
1360
1361 while ((pvp = dt_list_next(&dtp->dt_provlist)) != NULL)
1362 dt_provider_destroy(dtp, pvp);
1363
1364 if (dtp->dt_fd != -1)
1365 (void) close(dtp->dt_fd);
1366 if (dtp->dt_ftfd != -1)
1367 (void) close(dtp->dt_ftfd);
1368 if (dtp->dt_cdefs_fd != -1)
1369 (void) close(dtp->dt_cdefs_fd);
1370 if (dtp->dt_ddefs_fd != -1)
1371 (void) close(dtp->dt_ddefs_fd);
1372 if (dtp->dt_stdout_fd != -1)
1373 (void) close(dtp->dt_stdout_fd);
1374
1375 dt_epid_destroy(dtp);
1376 dt_aggid_destroy(dtp);
1377 dt_format_destroy(dtp);
1378 dt_strdata_destroy(dtp);
1379 dt_buffered_destroy(dtp);
1380 dt_aggregate_destroy(dtp);
1381 dt_pfdict_destroy(dtp);
1382 dt_provmod_destroy(&dtp->dt_provmod);
1383 dt_dof_fini(dtp);
1384
1385 for (i = 1; i < dtp->dt_cpp_argc; i++)
1386 free(dtp->dt_cpp_argv[i]);
1387
1388 while ((dirp = dt_list_next(&dtp->dt_lib_path)) != NULL) {
1389 dt_list_delete(&dtp->dt_lib_path, dirp);
1390 free(dirp->dir_path);
1391 free(dirp);
1392 }
1393
1394 free(dtp->dt_cpp_argv);
1395 free(dtp->dt_cpp_path);
1396 free(dtp->dt_ld_path);
1397
1398 free(dtp->dt_mods);
1399 free(dtp->dt_provs);
1400 free(dtp);
1401 }
1402
1403 int
1404 dtrace_provider_modules(dtrace_hdl_t *dtp, const char **mods, int nmods)
1405 {
1406 dt_provmod_t *prov;
1407 int i = 0;
1408
1409 for (prov = dtp->dt_provmod; prov != NULL; prov = prov->dp_next, i++) {
1410 if (i < nmods)
1411 mods[i] = prov->dp_name;
1412 }
1413
1414 return (i);
1415 }
1416
1417 int
1418 dtrace_ctlfd(dtrace_hdl_t *dtp)
1419 {
1420 return (dtp->dt_fd);
1421 }