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_10 DT_VERSION_NUMBER(1, 10, 0)
114 #define DT_VERS_LATEST DT_VERS_1_10
115 #define DT_VERS_STRING "Sun D 1.10"
116
117 const dt_version_t _dtrace_versions[] = {
118 DT_VERS_1_0, /* D API 1.0.0 (PSARC 2001/466) Solaris 10 FCS */
119 DT_VERS_1_1, /* D API 1.1.0 Solaris Express 6/05 */
120 DT_VERS_1_2, /* D API 1.2.0 Solaris 10 Update 1 */
121 DT_VERS_1_2_1, /* D API 1.2.1 Solaris Express 4/06 */
122 DT_VERS_1_2_2, /* D API 1.2.2 Solaris Express 6/06 */
123 DT_VERS_1_3, /* D API 1.3 Solaris Express 10/06 */
124 DT_VERS_1_4, /* D API 1.4 Solaris Express 2/07 */
125 DT_VERS_1_4_1, /* D API 1.4.1 Solaris Express 4/07 */
126 DT_VERS_1_5, /* D API 1.5 Solaris Express 7/07 */
127 DT_VERS_1_6, /* D API 1.6 */
128 DT_VERS_1_6_1, /* D API 1.6.1 */
129 DT_VERS_1_6_2, /* D API 1.6.2 */
130 DT_VERS_1_6_3, /* D API 1.6.3 */
131 DT_VERS_1_7, /* D API 1.7 */
132 DT_VERS_1_7_1, /* D API 1.7.1 */
133 DT_VERS_1_8, /* D API 1.8 */
134 DT_VERS_1_8_1, /* D API 1.8.1 */
135 DT_VERS_1_9, /* D API 1.9 */
136 DT_VERS_1_10, /* D API 1.10 */
137 0
138 };
139
140 /*
141 * Table of global identifiers. This is used to populate the global identifier
142 * hash when a new dtrace client open occurs. For more info see dt_ident.h.
143 * The global identifiers that represent functions use the dt_idops_func ops
144 * and specify the private data pointer as a prototype string which is parsed
145 * when the identifier is first encountered. These prototypes look like ANSI
146 * C function prototypes except that the special symbol "@" can be used as a
147 * wildcard to represent a single parameter of any type (i.e. any dt_node_t).
148 * The standard "..." notation can also be used to represent varargs. An empty
149 * parameter list is taken to mean void (that is, no arguments are permitted).
150 * A parameter enclosed in square brackets (e.g. "[int]") denotes an optional
151 * argument.
152 */
153 static const dt_ident_t _dtrace_globals[] = {
154 { "alloca", DT_IDENT_FUNC, 0, DIF_SUBR_ALLOCA, DT_ATTR_STABCMN, DT_VERS_1_0,
155 &dt_idops_func, "void *(size_t)" },
156 { "arg0", DT_IDENT_SCALAR, 0, DIF_VAR_ARG0, DT_ATTR_STABCMN, DT_VERS_1_0,
157 &dt_idops_type, "int64_t" },
158 { "arg1", DT_IDENT_SCALAR, 0, DIF_VAR_ARG1, DT_ATTR_STABCMN, DT_VERS_1_0,
159 &dt_idops_type, "int64_t" },
160 { "arg2", DT_IDENT_SCALAR, 0, DIF_VAR_ARG2, DT_ATTR_STABCMN, DT_VERS_1_0,
161 &dt_idops_type, "int64_t" },
162 { "arg3", DT_IDENT_SCALAR, 0, DIF_VAR_ARG3, DT_ATTR_STABCMN, DT_VERS_1_0,
163 &dt_idops_type, "int64_t" },
164 { "arg4", DT_IDENT_SCALAR, 0, DIF_VAR_ARG4, DT_ATTR_STABCMN, DT_VERS_1_0,
165 &dt_idops_type, "int64_t" },
166 { "arg5", DT_IDENT_SCALAR, 0, DIF_VAR_ARG5, DT_ATTR_STABCMN, DT_VERS_1_0,
167 &dt_idops_type, "int64_t" },
168 { "arg6", DT_IDENT_SCALAR, 0, DIF_VAR_ARG6, DT_ATTR_STABCMN, DT_VERS_1_0,
169 &dt_idops_type, "int64_t" },
170 { "arg7", DT_IDENT_SCALAR, 0, DIF_VAR_ARG7, DT_ATTR_STABCMN, DT_VERS_1_0,
171 &dt_idops_type, "int64_t" },
172 { "arg8", DT_IDENT_SCALAR, 0, DIF_VAR_ARG8, DT_ATTR_STABCMN, DT_VERS_1_0,
173 &dt_idops_type, "int64_t" },
174 { "arg9", DT_IDENT_SCALAR, 0, DIF_VAR_ARG9, DT_ATTR_STABCMN, DT_VERS_1_0,
175 &dt_idops_type, "int64_t" },
176 { "args", DT_IDENT_ARRAY, 0, DIF_VAR_ARGS, DT_ATTR_STABCMN, DT_VERS_1_0,
177 &dt_idops_args, NULL },
178 { "avg", DT_IDENT_AGGFUNC, 0, DTRACEAGG_AVG, DT_ATTR_STABCMN, DT_VERS_1_0,
179 &dt_idops_func, "void(@)" },
180 { "basename", DT_IDENT_FUNC, 0, DIF_SUBR_BASENAME, DT_ATTR_STABCMN, DT_VERS_1_0,
181 &dt_idops_func, "string(const char *)" },
182 { "bcopy", DT_IDENT_FUNC, 0, DIF_SUBR_BCOPY, DT_ATTR_STABCMN, DT_VERS_1_0,
183 &dt_idops_func, "void(void *, void *, size_t)" },
184 { "breakpoint", DT_IDENT_ACTFUNC, 0, DT_ACT_BREAKPOINT,
185 DT_ATTR_STABCMN, DT_VERS_1_0,
186 &dt_idops_func, "void()" },
187 { "caller", DT_IDENT_SCALAR, 0, DIF_VAR_CALLER, DT_ATTR_STABCMN, DT_VERS_1_0,
188 &dt_idops_type, "uintptr_t" },
189 { "chill", DT_IDENT_ACTFUNC, 0, DT_ACT_CHILL, DT_ATTR_STABCMN, DT_VERS_1_0,
190 &dt_idops_func, "void(int)" },
191 { "cleanpath", DT_IDENT_FUNC, 0, DIF_SUBR_CLEANPATH, DT_ATTR_STABCMN,
192 DT_VERS_1_0, &dt_idops_func, "string(const char *)" },
193 { "clear", DT_IDENT_ACTFUNC, 0, DT_ACT_CLEAR, DT_ATTR_STABCMN, DT_VERS_1_0,
194 &dt_idops_func, "void(...)" },
195 { "commit", DT_IDENT_ACTFUNC, 0, DT_ACT_COMMIT, DT_ATTR_STABCMN, DT_VERS_1_0,
196 &dt_idops_func, "void(int)" },
197 { "copyin", DT_IDENT_FUNC, 0, DIF_SUBR_COPYIN, DT_ATTR_STABCMN, DT_VERS_1_0,
198 &dt_idops_func, "void *(uintptr_t, size_t)" },
199 { "copyinstr", DT_IDENT_FUNC, 0, DIF_SUBR_COPYINSTR,
200 DT_ATTR_STABCMN, DT_VERS_1_0,
201 &dt_idops_func, "string(uintptr_t, [size_t])" },
202 { "copyinto", DT_IDENT_FUNC, 0, DIF_SUBR_COPYINTO, DT_ATTR_STABCMN,
203 DT_VERS_1_0, &dt_idops_func, "void(uintptr_t, size_t, void *)" },
204 { "copyout", DT_IDENT_FUNC, 0, DIF_SUBR_COPYOUT, DT_ATTR_STABCMN, DT_VERS_1_0,
205 &dt_idops_func, "void(void *, uintptr_t, size_t)" },
206 { "copyoutstr", DT_IDENT_FUNC, 0, DIF_SUBR_COPYOUTSTR,
207 DT_ATTR_STABCMN, DT_VERS_1_0,
208 &dt_idops_func, "void(char *, uintptr_t, size_t)" },
209 { "count", DT_IDENT_AGGFUNC, 0, DTRACEAGG_COUNT, DT_ATTR_STABCMN, DT_VERS_1_0,
210 &dt_idops_func, "void()" },
211 { "curthread", DT_IDENT_SCALAR, 0, DIF_VAR_CURTHREAD,
212 { DTRACE_STABILITY_STABLE, DTRACE_STABILITY_PRIVATE,
213 DTRACE_CLASS_COMMON }, DT_VERS_1_0,
214 &dt_idops_type, "genunix`kthread_t *" },
215 { "ddi_pathname", DT_IDENT_FUNC, 0, DIF_SUBR_DDI_PATHNAME,
216 DT_ATTR_EVOLCMN, DT_VERS_1_0,
217 &dt_idops_func, "string(void *, int64_t)" },
218 { "denormalize", DT_IDENT_ACTFUNC, 0, DT_ACT_DENORMALIZE, DT_ATTR_STABCMN,
219 DT_VERS_1_0, &dt_idops_func, "void(...)" },
220 { "dirname", DT_IDENT_FUNC, 0, DIF_SUBR_DIRNAME, DT_ATTR_STABCMN, DT_VERS_1_0,
221 &dt_idops_func, "string(const char *)" },
222 { "discard", DT_IDENT_ACTFUNC, 0, DT_ACT_DISCARD, DT_ATTR_STABCMN, DT_VERS_1_0,
223 &dt_idops_func, "void(int)" },
224 { "epid", DT_IDENT_SCALAR, 0, DIF_VAR_EPID, DT_ATTR_STABCMN, DT_VERS_1_0,
225 &dt_idops_type, "uint_t" },
226 { "errno", DT_IDENT_SCALAR, 0, DIF_VAR_ERRNO, DT_ATTR_STABCMN, DT_VERS_1_0,
227 &dt_idops_type, "int" },
228 { "execname", DT_IDENT_SCALAR, 0, DIF_VAR_EXECNAME,
229 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" },
230 { "exit", DT_IDENT_ACTFUNC, 0, DT_ACT_EXIT, DT_ATTR_STABCMN, DT_VERS_1_0,
231 &dt_idops_func, "void(int)" },
232 { "freopen", DT_IDENT_ACTFUNC, 0, DT_ACT_FREOPEN, DT_ATTR_STABCMN,
233 DT_VERS_1_1, &dt_idops_func, "void(@, ...)" },
234 { "ftruncate", DT_IDENT_ACTFUNC, 0, DT_ACT_FTRUNCATE, DT_ATTR_STABCMN,
235 DT_VERS_1_0, &dt_idops_func, "void()" },
236 { "func", DT_IDENT_ACTFUNC, 0, DT_ACT_SYM, DT_ATTR_STABCMN,
237 DT_VERS_1_2, &dt_idops_func, "_symaddr(uintptr_t)" },
238 { "getmajor", DT_IDENT_FUNC, 0, DIF_SUBR_GETMAJOR,
239 DT_ATTR_EVOLCMN, DT_VERS_1_0,
240 &dt_idops_func, "genunix`major_t(genunix`dev_t)" },
241 { "getminor", DT_IDENT_FUNC, 0, DIF_SUBR_GETMINOR,
242 DT_ATTR_EVOLCMN, DT_VERS_1_0,
243 &dt_idops_func, "genunix`minor_t(genunix`dev_t)" },
244 { "htonl", DT_IDENT_FUNC, 0, DIF_SUBR_HTONL, DT_ATTR_EVOLCMN, DT_VERS_1_3,
245 &dt_idops_func, "uint32_t(uint32_t)" },
246 { "htonll", DT_IDENT_FUNC, 0, DIF_SUBR_HTONLL, DT_ATTR_EVOLCMN, DT_VERS_1_3,
247 &dt_idops_func, "uint64_t(uint64_t)" },
248 { "htons", DT_IDENT_FUNC, 0, DIF_SUBR_HTONS, DT_ATTR_EVOLCMN, DT_VERS_1_3,
249 &dt_idops_func, "uint16_t(uint16_t)" },
250 { "getf", DT_IDENT_FUNC, 0, DIF_SUBR_GETF, DT_ATTR_STABCMN, DT_VERS_1_10,
251 &dt_idops_func, "file_t *(int)" },
252 { "gid", DT_IDENT_SCALAR, 0, DIF_VAR_GID, DT_ATTR_STABCMN, DT_VERS_1_0,
253 &dt_idops_type, "gid_t" },
254 { "id", DT_IDENT_SCALAR, 0, DIF_VAR_ID, DT_ATTR_STABCMN, DT_VERS_1_0,
255 &dt_idops_type, "uint_t" },
256 { "index", DT_IDENT_FUNC, 0, DIF_SUBR_INDEX, DT_ATTR_STABCMN, DT_VERS_1_1,
257 &dt_idops_func, "int(const char *, const char *, [int])" },
258 { "inet_ntoa", DT_IDENT_FUNC, 0, DIF_SUBR_INET_NTOA, DT_ATTR_STABCMN,
259 DT_VERS_1_5, &dt_idops_func, "string(ipaddr_t *)" },
260 { "inet_ntoa6", DT_IDENT_FUNC, 0, DIF_SUBR_INET_NTOA6, DT_ATTR_STABCMN,
261 DT_VERS_1_5, &dt_idops_func, "string(in6_addr_t *)" },
262 { "inet_ntop", DT_IDENT_FUNC, 0, DIF_SUBR_INET_NTOP, DT_ATTR_STABCMN,
263 DT_VERS_1_5, &dt_idops_func, "string(int, void *)" },
264 { "ipl", DT_IDENT_SCALAR, 0, DIF_VAR_IPL, DT_ATTR_STABCMN, DT_VERS_1_0,
265 &dt_idops_type, "uint_t" },
266 { "jstack", DT_IDENT_ACTFUNC, 0, DT_ACT_JSTACK, DT_ATTR_STABCMN, DT_VERS_1_0,
267 &dt_idops_func, "stack(...)" },
268 { "lltostr", DT_IDENT_FUNC, 0, DIF_SUBR_LLTOSTR, DT_ATTR_STABCMN, DT_VERS_1_0,
269 &dt_idops_func, "string(int64_t, [int])" },
270 { "llquantize", DT_IDENT_AGGFUNC, 0, DTRACEAGG_LLQUANTIZE, DT_ATTR_STABCMN,
271 DT_VERS_1_7, &dt_idops_func,
272 "void(@, int32_t, int32_t, int32_t, int32_t, ...)" },
273 { "lquantize", DT_IDENT_AGGFUNC, 0, DTRACEAGG_LQUANTIZE,
274 DT_ATTR_STABCMN, DT_VERS_1_0,
275 &dt_idops_func, "void(@, int32_t, int32_t, ...)" },
276 { "max", DT_IDENT_AGGFUNC, 0, DTRACEAGG_MAX, DT_ATTR_STABCMN, DT_VERS_1_0,
277 &dt_idops_func, "void(@)" },
278 { "min", DT_IDENT_AGGFUNC, 0, DTRACEAGG_MIN, DT_ATTR_STABCMN, DT_VERS_1_0,
279 &dt_idops_func, "void(@)" },
280 { "mod", DT_IDENT_ACTFUNC, 0, DT_ACT_MOD, DT_ATTR_STABCMN,
281 DT_VERS_1_2, &dt_idops_func, "_symaddr(uintptr_t)" },
282 { "msgdsize", DT_IDENT_FUNC, 0, DIF_SUBR_MSGDSIZE,
283 DT_ATTR_STABCMN, DT_VERS_1_0,
284 &dt_idops_func, "size_t(mblk_t *)" },
285 { "msgsize", DT_IDENT_FUNC, 0, DIF_SUBR_MSGSIZE,
286 DT_ATTR_STABCMN, DT_VERS_1_0,
287 &dt_idops_func, "size_t(mblk_t *)" },
288 { "mutex_owned", DT_IDENT_FUNC, 0, DIF_SUBR_MUTEX_OWNED,
289 DT_ATTR_EVOLCMN, DT_VERS_1_0,
290 &dt_idops_func, "int(genunix`kmutex_t *)" },
291 { "mutex_owner", DT_IDENT_FUNC, 0, DIF_SUBR_MUTEX_OWNER,
292 DT_ATTR_EVOLCMN, DT_VERS_1_0,
293 &dt_idops_func, "genunix`kthread_t *(genunix`kmutex_t *)" },
294 { "mutex_type_adaptive", DT_IDENT_FUNC, 0, DIF_SUBR_MUTEX_TYPE_ADAPTIVE,
295 DT_ATTR_EVOLCMN, DT_VERS_1_0,
296 &dt_idops_func, "int(genunix`kmutex_t *)" },
297 { "mutex_type_spin", DT_IDENT_FUNC, 0, DIF_SUBR_MUTEX_TYPE_SPIN,
298 DT_ATTR_EVOLCMN, DT_VERS_1_0,
299 &dt_idops_func, "int(genunix`kmutex_t *)" },
300 { "ntohl", DT_IDENT_FUNC, 0, DIF_SUBR_NTOHL, DT_ATTR_EVOLCMN, DT_VERS_1_3,
301 &dt_idops_func, "uint32_t(uint32_t)" },
302 { "ntohll", DT_IDENT_FUNC, 0, DIF_SUBR_NTOHLL, DT_ATTR_EVOLCMN, DT_VERS_1_3,
303 &dt_idops_func, "uint64_t(uint64_t)" },
304 { "ntohs", DT_IDENT_FUNC, 0, DIF_SUBR_NTOHS, DT_ATTR_EVOLCMN, DT_VERS_1_3,
305 &dt_idops_func, "uint16_t(uint16_t)" },
306 { "normalize", DT_IDENT_ACTFUNC, 0, DT_ACT_NORMALIZE, DT_ATTR_STABCMN,
307 DT_VERS_1_0, &dt_idops_func, "void(...)" },
308 { "panic", DT_IDENT_ACTFUNC, 0, DT_ACT_PANIC, DT_ATTR_STABCMN, DT_VERS_1_0,
309 &dt_idops_func, "void()" },
310 { "pid", DT_IDENT_SCALAR, 0, DIF_VAR_PID, DT_ATTR_STABCMN, DT_VERS_1_0,
311 &dt_idops_type, "pid_t" },
312 { "ppid", DT_IDENT_SCALAR, 0, DIF_VAR_PPID, DT_ATTR_STABCMN, DT_VERS_1_0,
313 &dt_idops_type, "pid_t" },
314 { "print", DT_IDENT_ACTFUNC, 0, DT_ACT_PRINT, DT_ATTR_STABCMN, DT_VERS_1_9,
315 &dt_idops_func, "void(@)" },
316 { "printa", DT_IDENT_ACTFUNC, 0, DT_ACT_PRINTA, DT_ATTR_STABCMN, DT_VERS_1_0,
317 &dt_idops_func, "void(@, ...)" },
318 { "printf", DT_IDENT_ACTFUNC, 0, DT_ACT_PRINTF, DT_ATTR_STABCMN, DT_VERS_1_0,
319 &dt_idops_func, "void(@, ...)" },
320 { "probefunc", DT_IDENT_SCALAR, 0, DIF_VAR_PROBEFUNC,
321 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" },
322 { "probemod", DT_IDENT_SCALAR, 0, DIF_VAR_PROBEMOD,
323 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" },
324 { "probename", DT_IDENT_SCALAR, 0, DIF_VAR_PROBENAME,
325 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" },
326 { "probeprov", DT_IDENT_SCALAR, 0, DIF_VAR_PROBEPROV,
327 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" },
328 { "progenyof", DT_IDENT_FUNC, 0, DIF_SUBR_PROGENYOF,
329 DT_ATTR_STABCMN, DT_VERS_1_0,
330 &dt_idops_func, "int(pid_t)" },
331 { "quantize", DT_IDENT_AGGFUNC, 0, DTRACEAGG_QUANTIZE,
332 DT_ATTR_STABCMN, DT_VERS_1_0,
333 &dt_idops_func, "void(@, ...)" },
334 { "raise", DT_IDENT_ACTFUNC, 0, DT_ACT_RAISE, DT_ATTR_STABCMN, DT_VERS_1_0,
335 &dt_idops_func, "void(int)" },
336 { "rand", DT_IDENT_FUNC, 0, DIF_SUBR_RAND, DT_ATTR_STABCMN, DT_VERS_1_0,
337 &dt_idops_func, "int()" },
338 { "rindex", DT_IDENT_FUNC, 0, DIF_SUBR_RINDEX, DT_ATTR_STABCMN, DT_VERS_1_1,
339 &dt_idops_func, "int(const char *, const char *, [int])" },
340 { "rw_iswriter", DT_IDENT_FUNC, 0, DIF_SUBR_RW_ISWRITER,
341 DT_ATTR_EVOLCMN, DT_VERS_1_0,
342 &dt_idops_func, "int(genunix`krwlock_t *)" },
343 { "rw_read_held", DT_IDENT_FUNC, 0, DIF_SUBR_RW_READ_HELD,
344 DT_ATTR_EVOLCMN, DT_VERS_1_0,
345 &dt_idops_func, "int(genunix`krwlock_t *)" },
346 { "rw_write_held", DT_IDENT_FUNC, 0, DIF_SUBR_RW_WRITE_HELD,
347 DT_ATTR_EVOLCMN, DT_VERS_1_0,
348 &dt_idops_func, "int(genunix`krwlock_t *)" },
349 { "self", DT_IDENT_PTR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0,
350 &dt_idops_type, "void" },
351 { "setopt", DT_IDENT_ACTFUNC, 0, DT_ACT_SETOPT, DT_ATTR_STABCMN,
352 DT_VERS_1_2, &dt_idops_func, "void(const char *, [const char *])" },
353 { "speculate", DT_IDENT_ACTFUNC, 0, DT_ACT_SPECULATE,
354 DT_ATTR_STABCMN, DT_VERS_1_0,
355 &dt_idops_func, "void(int)" },
356 { "speculation", DT_IDENT_FUNC, 0, DIF_SUBR_SPECULATION,
357 DT_ATTR_STABCMN, DT_VERS_1_0,
358 &dt_idops_func, "int()" },
359 { "stack", DT_IDENT_ACTFUNC, 0, DT_ACT_STACK, DT_ATTR_STABCMN, DT_VERS_1_0,
360 &dt_idops_func, "stack(...)" },
361 { "stackdepth", DT_IDENT_SCALAR, 0, DIF_VAR_STACKDEPTH,
362 DT_ATTR_STABCMN, DT_VERS_1_0,
363 &dt_idops_type, "uint32_t" },
364 { "stddev", DT_IDENT_AGGFUNC, 0, DTRACEAGG_STDDEV, DT_ATTR_STABCMN,
365 DT_VERS_1_6, &dt_idops_func, "void(@)" },
366 { "stop", DT_IDENT_ACTFUNC, 0, DT_ACT_STOP, DT_ATTR_STABCMN, DT_VERS_1_0,
367 &dt_idops_func, "void()" },
368 { "strchr", DT_IDENT_FUNC, 0, DIF_SUBR_STRCHR, DT_ATTR_STABCMN, DT_VERS_1_1,
369 &dt_idops_func, "string(const char *, char)" },
370 { "strlen", DT_IDENT_FUNC, 0, DIF_SUBR_STRLEN, DT_ATTR_STABCMN, DT_VERS_1_0,
371 &dt_idops_func, "size_t(const char *)" },
372 { "strjoin", DT_IDENT_FUNC, 0, DIF_SUBR_STRJOIN, DT_ATTR_STABCMN, DT_VERS_1_0,
373 &dt_idops_func, "string(const char *, const char *)" },
374 { "strrchr", DT_IDENT_FUNC, 0, DIF_SUBR_STRRCHR, DT_ATTR_STABCMN, DT_VERS_1_1,
375 &dt_idops_func, "string(const char *, char)" },
376 { "strstr", DT_IDENT_FUNC, 0, DIF_SUBR_STRSTR, DT_ATTR_STABCMN, DT_VERS_1_1,
377 &dt_idops_func, "string(const char *, const char *)" },
378 { "strtok", DT_IDENT_FUNC, 0, DIF_SUBR_STRTOK, DT_ATTR_STABCMN, DT_VERS_1_1,
379 &dt_idops_func, "string(const char *, const char *)" },
380 { "substr", DT_IDENT_FUNC, 0, DIF_SUBR_SUBSTR, DT_ATTR_STABCMN, DT_VERS_1_1,
381 &dt_idops_func, "string(const char *, int, [int])" },
382 { "sum", DT_IDENT_AGGFUNC, 0, DTRACEAGG_SUM, DT_ATTR_STABCMN, DT_VERS_1_0,
383 &dt_idops_func, "void(@)" },
384 { "sym", DT_IDENT_ACTFUNC, 0, DT_ACT_SYM, DT_ATTR_STABCMN,
385 DT_VERS_1_2, &dt_idops_func, "_symaddr(uintptr_t)" },
386 { "system", DT_IDENT_ACTFUNC, 0, DT_ACT_SYSTEM, DT_ATTR_STABCMN, DT_VERS_1_0,
387 &dt_idops_func, "void(@, ...)" },
388 { "this", DT_IDENT_PTR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0,
389 &dt_idops_type, "void" },
390 { "tid", DT_IDENT_SCALAR, 0, DIF_VAR_TID, DT_ATTR_STABCMN, DT_VERS_1_0,
391 &dt_idops_type, "id_t" },
392 { "timestamp", DT_IDENT_SCALAR, 0, DIF_VAR_TIMESTAMP,
393 DT_ATTR_STABCMN, DT_VERS_1_0,
394 &dt_idops_type, "uint64_t" },
395 { "tolower", DT_IDENT_FUNC, 0, DIF_SUBR_TOLOWER, DT_ATTR_STABCMN, DT_VERS_1_8,
396 &dt_idops_func, "string(const char *)" },
397 { "toupper", DT_IDENT_FUNC, 0, DIF_SUBR_TOUPPER, DT_ATTR_STABCMN, DT_VERS_1_8,
398 &dt_idops_func, "string(const char *)" },
399 { "trace", DT_IDENT_ACTFUNC, 0, DT_ACT_TRACE, DT_ATTR_STABCMN, DT_VERS_1_0,
400 &dt_idops_func, "void(@)" },
401 { "tracemem", DT_IDENT_ACTFUNC, 0, DT_ACT_TRACEMEM,
402 DT_ATTR_STABCMN, DT_VERS_1_0,
403 &dt_idops_func, "void(@, size_t, ...)" },
404 { "trunc", DT_IDENT_ACTFUNC, 0, DT_ACT_TRUNC, DT_ATTR_STABCMN,
405 DT_VERS_1_0, &dt_idops_func, "void(...)" },
406 { "uaddr", DT_IDENT_ACTFUNC, 0, DT_ACT_UADDR, DT_ATTR_STABCMN,
407 DT_VERS_1_2, &dt_idops_func, "_usymaddr(uintptr_t)" },
408 { "ucaller", DT_IDENT_SCALAR, 0, DIF_VAR_UCALLER, DT_ATTR_STABCMN,
409 DT_VERS_1_2, &dt_idops_type, "uint64_t" },
410 { "ufunc", DT_IDENT_ACTFUNC, 0, DT_ACT_USYM, DT_ATTR_STABCMN,
411 DT_VERS_1_2, &dt_idops_func, "_usymaddr(uintptr_t)" },
412 { "uid", DT_IDENT_SCALAR, 0, DIF_VAR_UID, DT_ATTR_STABCMN, DT_VERS_1_0,
413 &dt_idops_type, "uid_t" },
414 { "umod", DT_IDENT_ACTFUNC, 0, DT_ACT_UMOD, DT_ATTR_STABCMN,
415 DT_VERS_1_2, &dt_idops_func, "_usymaddr(uintptr_t)" },
416 { "uregs", DT_IDENT_ARRAY, 0, DIF_VAR_UREGS, DT_ATTR_STABCMN, DT_VERS_1_0,
417 &dt_idops_regs, NULL },
418 { "ustack", DT_IDENT_ACTFUNC, 0, DT_ACT_USTACK, DT_ATTR_STABCMN, DT_VERS_1_0,
419 &dt_idops_func, "stack(...)" },
420 { "ustackdepth", DT_IDENT_SCALAR, 0, DIF_VAR_USTACKDEPTH,
421 DT_ATTR_STABCMN, DT_VERS_1_2,
422 &dt_idops_type, "uint32_t" },
423 { "usym", DT_IDENT_ACTFUNC, 0, DT_ACT_USYM, DT_ATTR_STABCMN,
424 DT_VERS_1_2, &dt_idops_func, "_usymaddr(uintptr_t)" },
425 { "vmregs", DT_IDENT_ARRAY, 0, DIF_VAR_VMREGS, DT_ATTR_STABCMN, DT_VERS_1_7,
426 &dt_idops_regs, NULL },
427 { "vtimestamp", DT_IDENT_SCALAR, 0, DIF_VAR_VTIMESTAMP,
428 DT_ATTR_STABCMN, DT_VERS_1_0,
429 &dt_idops_type, "uint64_t" },
430 { "walltimestamp", DT_IDENT_SCALAR, 0, DIF_VAR_WALLTIMESTAMP,
431 DT_ATTR_STABCMN, DT_VERS_1_0,
432 &dt_idops_type, "int64_t" },
433 { "zonename", DT_IDENT_SCALAR, 0, DIF_VAR_ZONENAME,
434 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" },
435 { NULL, 0, 0, 0, { 0, 0, 0 }, 0, NULL, NULL }
436 };
437
438 /*
439 * Tables of ILP32 intrinsic integer and floating-point type templates to use
440 * to populate the dynamic "C" CTF type container.
441 */
442 static const dt_intrinsic_t _dtrace_intrinsics_32[] = {
443 { "void", { CTF_INT_SIGNED, 0, 0 }, CTF_K_INTEGER },
444 { "signed", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER },
445 { "unsigned", { 0, 0, 32 }, CTF_K_INTEGER },
446 { "char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER },
447 { "short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER },
448 { "int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER },
449 { "long", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER },
450 { "long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER },
451 { "signed char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER },
452 { "signed short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER },
453 { "signed int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER },
454 { "signed long", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER },
455 { "signed long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER },
456 { "unsigned char", { CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER },
457 { "unsigned short", { 0, 0, 16 }, CTF_K_INTEGER },
458 { "unsigned int", { 0, 0, 32 }, CTF_K_INTEGER },
459 { "unsigned long", { 0, 0, 32 }, CTF_K_INTEGER },
460 { "unsigned long long", { 0, 0, 64 }, CTF_K_INTEGER },
461 { "_Bool", { CTF_INT_BOOL, 0, 8 }, CTF_K_INTEGER },
462 { "float", { CTF_FP_SINGLE, 0, 32 }, CTF_K_FLOAT },
463 { "double", { CTF_FP_DOUBLE, 0, 64 }, CTF_K_FLOAT },
464 { "long double", { CTF_FP_LDOUBLE, 0, 128 }, CTF_K_FLOAT },
465 { "float imaginary", { CTF_FP_IMAGRY, 0, 32 }, CTF_K_FLOAT },
466 { "double imaginary", { CTF_FP_DIMAGRY, 0, 64 }, CTF_K_FLOAT },
467 { "long double imaginary", { CTF_FP_LDIMAGRY, 0, 128 }, CTF_K_FLOAT },
468 { "float complex", { CTF_FP_CPLX, 0, 64 }, CTF_K_FLOAT },
469 { "double complex", { CTF_FP_DCPLX, 0, 128 }, CTF_K_FLOAT },
470 { "long double complex", { CTF_FP_LDCPLX, 0, 256 }, CTF_K_FLOAT },
471 { NULL, { 0, 0, 0 }, 0 }
472 };
473
474 /*
475 * Tables of LP64 intrinsic integer and floating-point type templates to use
476 * to populate the dynamic "C" CTF type container.
477 */
478 static const dt_intrinsic_t _dtrace_intrinsics_64[] = {
479 { "void", { CTF_INT_SIGNED, 0, 0 }, CTF_K_INTEGER },
480 { "signed", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER },
481 { "unsigned", { 0, 0, 32 }, CTF_K_INTEGER },
482 { "char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER },
483 { "short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER },
484 { "int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER },
485 { "long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER },
486 { "long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER },
487 { "signed char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER },
488 { "signed short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER },
489 { "signed int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER },
490 { "signed long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER },
491 { "signed long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER },
492 { "unsigned char", { CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER },
493 { "unsigned short", { 0, 0, 16 }, CTF_K_INTEGER },
494 { "unsigned int", { 0, 0, 32 }, CTF_K_INTEGER },
495 { "unsigned long", { 0, 0, 64 }, CTF_K_INTEGER },
496 { "unsigned long long", { 0, 0, 64 }, CTF_K_INTEGER },
497 { "_Bool", { CTF_INT_BOOL, 0, 8 }, CTF_K_INTEGER },
498 { "float", { CTF_FP_SINGLE, 0, 32 }, CTF_K_FLOAT },
499 { "double", { CTF_FP_DOUBLE, 0, 64 }, CTF_K_FLOAT },
500 { "long double", { CTF_FP_LDOUBLE, 0, 128 }, CTF_K_FLOAT },
501 { "float imaginary", { CTF_FP_IMAGRY, 0, 32 }, CTF_K_FLOAT },
502 { "double imaginary", { CTF_FP_DIMAGRY, 0, 64 }, CTF_K_FLOAT },
503 { "long double imaginary", { CTF_FP_LDIMAGRY, 0, 128 }, CTF_K_FLOAT },
504 { "float complex", { CTF_FP_CPLX, 0, 64 }, CTF_K_FLOAT },
505 { "double complex", { CTF_FP_DCPLX, 0, 128 }, CTF_K_FLOAT },
506 { "long double complex", { CTF_FP_LDCPLX, 0, 256 }, CTF_K_FLOAT },
507 { NULL, { 0, 0, 0 }, 0 }
508 };
509
510 /*
511 * Tables of ILP32 typedefs to use to populate the dynamic "D" CTF container.
512 * These aliases ensure that D definitions can use typical <sys/types.h> names.
513 */
514 static const dt_typedef_t _dtrace_typedefs_32[] = {
515 { "char", "int8_t" },
516 { "short", "int16_t" },
517 { "int", "int32_t" },
518 { "long long", "int64_t" },
519 { "int", "intptr_t" },
520 { "int", "ssize_t" },
521 { "unsigned char", "uint8_t" },
522 { "unsigned short", "uint16_t" },
523 { "unsigned", "uint32_t" },
524 { "unsigned long long", "uint64_t" },
525 { "unsigned char", "uchar_t" },
526 { "unsigned short", "ushort_t" },
527 { "unsigned", "uint_t" },
528 { "unsigned long", "ulong_t" },
529 { "unsigned long long", "u_longlong_t" },
530 { "int", "ptrdiff_t" },
531 { "unsigned", "uintptr_t" },
532 { "unsigned", "size_t" },
533 { "long", "id_t" },
534 { "long", "pid_t" },
535 { NULL, NULL }
536 };
537
538 /*
539 * Tables of LP64 typedefs to use to populate the dynamic "D" CTF container.
540 * These aliases ensure that D definitions can use typical <sys/types.h> names.
541 */
542 static const dt_typedef_t _dtrace_typedefs_64[] = {
543 { "char", "int8_t" },
544 { "short", "int16_t" },
545 { "int", "int32_t" },
546 { "long", "int64_t" },
547 { "long", "intptr_t" },
548 { "long", "ssize_t" },
549 { "unsigned char", "uint8_t" },
550 { "unsigned short", "uint16_t" },
551 { "unsigned", "uint32_t" },
552 { "unsigned long", "uint64_t" },
553 { "unsigned char", "uchar_t" },
554 { "unsigned short", "ushort_t" },
555 { "unsigned", "uint_t" },
556 { "unsigned long", "ulong_t" },
557 { "unsigned long long", "u_longlong_t" },
558 { "long", "ptrdiff_t" },
559 { "unsigned long", "uintptr_t" },
560 { "unsigned long", "size_t" },
561 { "int", "id_t" },
562 { "int", "pid_t" },
563 { NULL, NULL }
564 };
565
566 /*
567 * Tables of ILP32 integer type templates used to populate the dtp->dt_ints[]
568 * cache when a new dtrace client open occurs. Values are set by dtrace_open().
569 */
570 static const dt_intdesc_t _dtrace_ints_32[] = {
571 { "int", NULL, CTF_ERR, 0x7fffffffULL },
572 { "unsigned int", NULL, CTF_ERR, 0xffffffffULL },
573 { "long", NULL, CTF_ERR, 0x7fffffffULL },
574 { "unsigned long", NULL, CTF_ERR, 0xffffffffULL },
575 { "long long", NULL, CTF_ERR, 0x7fffffffffffffffULL },
576 { "unsigned long long", NULL, CTF_ERR, 0xffffffffffffffffULL }
577 };
578
579 /*
580 * Tables of LP64 integer type templates used to populate the dtp->dt_ints[]
581 * cache when a new dtrace client open occurs. Values are set by dtrace_open().
582 */
583 static const dt_intdesc_t _dtrace_ints_64[] = {
584 { "int", NULL, CTF_ERR, 0x7fffffffULL },
585 { "unsigned int", NULL, CTF_ERR, 0xffffffffULL },
586 { "long", NULL, CTF_ERR, 0x7fffffffffffffffULL },
587 { "unsigned long", NULL, CTF_ERR, 0xffffffffffffffffULL },
588 { "long long", NULL, CTF_ERR, 0x7fffffffffffffffULL },
589 { "unsigned long long", NULL, CTF_ERR, 0xffffffffffffffffULL }
590 };
591
592 /*
593 * Table of macro variable templates used to populate the macro identifier hash
594 * when a new dtrace client open occurs. Values are set by dtrace_update().
595 */
596 static const dt_ident_t _dtrace_macros[] = {
597 { "egid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 },
598 { "euid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 },
599 { "gid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 },
600 { "pid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 },
601 { "pgid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 },
602 { "ppid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 },
603 { "projid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 },
604 { "sid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 },
605 { "taskid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 },
606 { "target", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 },
607 { "uid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 },
608 { NULL, 0, 0, 0, { 0, 0, 0 }, 0 }
609 };
610
611 /*
612 * Hard-wired definition string to be compiled and cached every time a new
613 * DTrace library handle is initialized. This string should only be used to
614 * contain definitions that should be present regardless of DTRACE_O_NOLIBS.
615 */
616 static const char _dtrace_hardwire[] = "\
617 inline long NULL = 0; \n\
618 #pragma D binding \"1.0\" NULL\n\
619 ";
620
621 /*
622 * Default DTrace configuration to use when opening libdtrace DTRACE_O_NODEV.
623 * If DTRACE_O_NODEV is not set, we load the configuration from the kernel.
624 * The use of CTF_MODEL_NATIVE is more subtle than it might appear: we are
625 * relying on the fact that when running dtrace(1M), isaexec will invoke the
626 * binary with the same bitness as the kernel, which is what we want by default
627 * when generating our DIF. The user can override the choice using oflags.
628 */
629 static const dtrace_conf_t _dtrace_conf = {
630 DIF_VERSION, /* dtc_difversion */
631 DIF_DIR_NREGS, /* dtc_difintregs */
632 DIF_DTR_NREGS, /* dtc_diftupregs */
633 CTF_MODEL_NATIVE /* dtc_ctfmodel */
634 };
635
636 const dtrace_attribute_t _dtrace_maxattr = {
637 DTRACE_STABILITY_MAX,
638 DTRACE_STABILITY_MAX,
639 DTRACE_CLASS_MAX
640 };
641
642 const dtrace_attribute_t _dtrace_defattr = {
643 DTRACE_STABILITY_STABLE,
644 DTRACE_STABILITY_STABLE,
645 DTRACE_CLASS_COMMON
646 };
647
648 const dtrace_attribute_t _dtrace_symattr = {
649 DTRACE_STABILITY_PRIVATE,
650 DTRACE_STABILITY_PRIVATE,
651 DTRACE_CLASS_UNKNOWN
652 };
653
654 const dtrace_attribute_t _dtrace_typattr = {
655 DTRACE_STABILITY_PRIVATE,
656 DTRACE_STABILITY_PRIVATE,
657 DTRACE_CLASS_UNKNOWN
658 };
659
660 const dtrace_attribute_t _dtrace_prvattr = {
661 DTRACE_STABILITY_PRIVATE,
662 DTRACE_STABILITY_PRIVATE,
663 DTRACE_CLASS_UNKNOWN
664 };
665
666 const dtrace_pattr_t _dtrace_prvdesc = {
667 { DTRACE_STABILITY_UNSTABLE, DTRACE_STABILITY_UNSTABLE, DTRACE_CLASS_COMMON },
668 { DTRACE_STABILITY_UNSTABLE, DTRACE_STABILITY_UNSTABLE, DTRACE_CLASS_COMMON },
669 { DTRACE_STABILITY_UNSTABLE, DTRACE_STABILITY_UNSTABLE, DTRACE_CLASS_COMMON },
670 { DTRACE_STABILITY_UNSTABLE, DTRACE_STABILITY_UNSTABLE, DTRACE_CLASS_COMMON },
671 { DTRACE_STABILITY_UNSTABLE, DTRACE_STABILITY_UNSTABLE, DTRACE_CLASS_COMMON },
672 };
673
674 const char *_dtrace_defcpp = "/usr/ccs/lib/cpp"; /* default cpp(1) to invoke */
675 const char *_dtrace_defld = "/usr/ccs/bin/ld"; /* default ld(1) to invoke */
676
677 const char *_dtrace_libdir = "/usr/lib/dtrace"; /* default library directory */
678 const char *_dtrace_provdir = "/dev/dtrace/provider"; /* provider directory */
679
680 int _dtrace_strbuckets = 211; /* default number of hash buckets (prime) */
681 int _dtrace_intbuckets = 256; /* default number of integer buckets (Pof2) */
682 uint_t _dtrace_strsize = 256; /* default size of string intrinsic type */
683 uint_t _dtrace_stkindent = 14; /* default whitespace indent for stack/ustack */
684 uint_t _dtrace_pidbuckets = 64; /* default number of pid hash buckets */
685 uint_t _dtrace_pidlrulim = 8; /* default number of pid handles to cache */
686 size_t _dtrace_bufsize = 512; /* default dt_buf_create() size */
687 int _dtrace_argmax = 32; /* default maximum number of probe arguments */
688
689 int _dtrace_debug = 0; /* debug messages enabled (off) */
690 const char *const _dtrace_version = DT_VERS_STRING; /* API version string */
691 int _dtrace_rdvers = RD_VERSION; /* rtld_db feature version */
692
693 typedef struct dt_fdlist {
694 int *df_fds; /* array of provider driver file descriptors */
695 uint_t df_ents; /* number of valid elements in df_fds[] */
696 uint_t df_size; /* size of df_fds[] */
697 } dt_fdlist_t;
698
699 #pragma init(_dtrace_init)
700 void
701 _dtrace_init(void)
702 {
703 _dtrace_debug = getenv("DTRACE_DEBUG") != NULL;
704
705 for (; _dtrace_rdvers > 0; _dtrace_rdvers--) {
706 if (rd_init(_dtrace_rdvers) == RD_OK)
707 break;
708 }
709 }
710
711 static dtrace_hdl_t *
712 set_open_errno(dtrace_hdl_t *dtp, int *errp, int err)
713 {
714 if (dtp != NULL)
715 dtrace_close(dtp);
716 if (errp != NULL)
717 *errp = err;
718 return (NULL);
719 }
720
721 static void
722 dt_provmod_open(dt_provmod_t **provmod, dt_fdlist_t *dfp)
723 {
724 dt_provmod_t *prov;
725 char path[PATH_MAX];
726 struct dirent *dp, *ep;
727 DIR *dirp;
728 int fd;
729
730 if ((dirp = opendir(_dtrace_provdir)) == NULL)
731 return; /* failed to open directory; just skip it */
732
733 ep = alloca(sizeof (struct dirent) + PATH_MAX + 1);
734 bzero(ep, sizeof (struct dirent) + PATH_MAX + 1);
735
736 while (readdir_r(dirp, ep, &dp) == 0 && dp != NULL) {
737 if (dp->d_name[0] == '.')
738 continue; /* skip "." and ".." */
739
740 if (dfp->df_ents == dfp->df_size) {
741 uint_t size = dfp->df_size ? dfp->df_size * 2 : 16;
742 int *fds = realloc(dfp->df_fds, size * sizeof (int));
743
744 if (fds == NULL)
745 break; /* skip the rest of this directory */
746
747 dfp->df_fds = fds;
748 dfp->df_size = size;
749 }
750
751 (void) snprintf(path, sizeof (path), "%s/%s",
752 _dtrace_provdir, dp->d_name);
753
754 if ((fd = open(path, O_RDONLY)) == -1)
755 continue; /* failed to open driver; just skip it */
756
757 if (((prov = malloc(sizeof (dt_provmod_t))) == NULL) ||
758 (prov->dp_name = malloc(strlen(dp->d_name) + 1)) == NULL) {
759 free(prov);
760 (void) close(fd);
761 break;
762 }
763
764 (void) strcpy(prov->dp_name, dp->d_name);
765 prov->dp_next = *provmod;
766 *provmod = prov;
767
768 dt_dprintf("opened provider %s\n", dp->d_name);
769 dfp->df_fds[dfp->df_ents++] = fd;
770 }
771
772 (void) closedir(dirp);
773 }
774
775 static void
776 dt_provmod_destroy(dt_provmod_t **provmod)
777 {
778 dt_provmod_t *next, *current;
779
780 for (current = *provmod; current != NULL; current = next) {
781 next = current->dp_next;
782 free(current->dp_name);
783 free(current);
784 }
785
786 *provmod = NULL;
787 }
788
789 static const char *
790 dt_get_sysinfo(int cmd, char *buf, size_t len)
791 {
792 ssize_t rv = sysinfo(cmd, buf, len);
793 char *p = buf;
794
795 if (rv < 0 || rv > len)
796 (void) snprintf(buf, len, "%s", "Unknown");
797
798 while ((p = strchr(p, '.')) != NULL)
799 *p++ = '_';
800
801 return (buf);
802 }
803
804 static dtrace_hdl_t *
805 dt_vopen(int version, int flags, int *errp,
806 const dtrace_vector_t *vector, void *arg)
807 {
808 dtrace_hdl_t *dtp = NULL;
809 int dtfd = -1, ftfd = -1, fterr = 0;
810 dtrace_prog_t *pgp;
811 dt_module_t *dmp;
812 dt_provmod_t *provmod = NULL;
813 int i, err;
814 struct rlimit rl;
815
816 const dt_intrinsic_t *dinp;
817 const dt_typedef_t *dtyp;
818 const dt_ident_t *idp;
819
820 dtrace_typeinfo_t dtt;
821 ctf_funcinfo_t ctc;
822 ctf_arinfo_t ctr;
823
824 dt_fdlist_t df = { NULL, 0, 0 };
825
826 char isadef[32], utsdef[32];
827 char s1[64], s2[64];
828
829 if (version <= 0)
830 return (set_open_errno(dtp, errp, EINVAL));
831
832 if (version > DTRACE_VERSION)
833 return (set_open_errno(dtp, errp, EDT_VERSION));
834
835 if (version < DTRACE_VERSION) {
836 /*
837 * Currently, increasing the library version number is used to
838 * denote a binary incompatible change. That is, a consumer
839 * of the library cannot run on a version of the library with
840 * a higher DTRACE_VERSION number than the consumer compiled
841 * against. Once the library API has been committed to,
842 * backwards binary compatibility will be required; at that
843 * time, this check should change to return EDT_OVERSION only
844 * if the specified version number is less than the version
845 * number at the time of interface commitment.
846 */
847 return (set_open_errno(dtp, errp, EDT_OVERSION));
848 }
849
850 if (flags & ~DTRACE_O_MASK)
851 return (set_open_errno(dtp, errp, EINVAL));
852
853 if ((flags & DTRACE_O_LP64) && (flags & DTRACE_O_ILP32))
854 return (set_open_errno(dtp, errp, EINVAL));
855
856 if (vector == NULL && arg != NULL)
857 return (set_open_errno(dtp, errp, EINVAL));
858
859 if (elf_version(EV_CURRENT) == EV_NONE)
860 return (set_open_errno(dtp, errp, EDT_ELFVERSION));
861
862 if (vector != NULL || (flags & DTRACE_O_NODEV))
863 goto alloc; /* do not attempt to open dtrace device */
864
865 /*
866 * Before we get going, crank our limit on file descriptors up to the
867 * hard limit. This is to allow for the fact that libproc keeps file
868 * descriptors to objects open for the lifetime of the proc handle;
869 * without raising our hard limit, we would have an acceptably small
870 * bound on the number of processes that we could concurrently
871 * instrument with the pid provider.
872 */
873 if (getrlimit(RLIMIT_NOFILE, &rl) == 0) {
874 rl.rlim_cur = rl.rlim_max;
875 (void) setrlimit(RLIMIT_NOFILE, &rl);
876 }
877
878 /*
879 * Get the device path of each of the providers. We hold them open
880 * in the df.df_fds list until we open the DTrace driver itself,
881 * allowing us to see all of the probes provided on this system. Once
882 * we have the DTrace driver open, we can safely close all the providers
883 * now that they have registered with the framework.
884 */
885 dt_provmod_open(&provmod, &df);
886
887 dtfd = open("/dev/dtrace/dtrace", O_RDWR);
888 err = errno; /* save errno from opening dtfd */
889
890 ftfd = open("/dev/dtrace/provider/fasttrap", O_RDWR);
891 fterr = ftfd == -1 ? errno : 0; /* save errno from open ftfd */
892
893 while (df.df_ents-- != 0)
894 (void) close(df.df_fds[df.df_ents]);
895
896 free(df.df_fds);
897
898 /*
899 * If we failed to open the dtrace device, fail dtrace_open().
900 * We convert some kernel errnos to custom libdtrace errnos to
901 * improve the resulting message from the usual strerror().
902 */
903 if (dtfd == -1) {
904 dt_provmod_destroy(&provmod);
905 switch (err) {
906 case ENOENT:
907 err = EDT_NOENT;
908 break;
909 case EBUSY:
910 err = EDT_BUSY;
911 break;
912 case EACCES:
913 err = EDT_ACCESS;
914 break;
915 }
916 return (set_open_errno(dtp, errp, err));
917 }
918
919 (void) fcntl(dtfd, F_SETFD, FD_CLOEXEC);
920 (void) fcntl(ftfd, F_SETFD, FD_CLOEXEC);
921
922 alloc:
923 if ((dtp = malloc(sizeof (dtrace_hdl_t))) == NULL)
924 return (set_open_errno(dtp, errp, EDT_NOMEM));
925
926 bzero(dtp, sizeof (dtrace_hdl_t));
927 dtp->dt_oflags = flags;
928 dtp->dt_prcmode = DT_PROC_STOP_PREINIT;
929 dtp->dt_linkmode = DT_LINK_KERNEL;
930 dtp->dt_linktype = DT_LTYP_ELF;
931 dtp->dt_xlatemode = DT_XL_STATIC;
932 dtp->dt_stdcmode = DT_STDC_XA;
933 dtp->dt_version = version;
934 dtp->dt_fd = dtfd;
935 dtp->dt_ftfd = ftfd;
936 dtp->dt_fterr = fterr;
937 dtp->dt_cdefs_fd = -1;
938 dtp->dt_ddefs_fd = -1;
939 dtp->dt_stdout_fd = -1;
940 dtp->dt_modbuckets = _dtrace_strbuckets;
941 dtp->dt_mods = calloc(dtp->dt_modbuckets, sizeof (dt_module_t *));
942 dtp->dt_provbuckets = _dtrace_strbuckets;
943 dtp->dt_provs = calloc(dtp->dt_provbuckets, sizeof (dt_provider_t *));
944 dt_proc_init(dtp);
945 dtp->dt_vmax = DT_VERS_LATEST;
946 dtp->dt_cpp_path = strdup(_dtrace_defcpp);
947 dtp->dt_cpp_argv = malloc(sizeof (char *));
948 dtp->dt_cpp_argc = 1;
949 dtp->dt_cpp_args = 1;
950 dtp->dt_ld_path = strdup(_dtrace_defld);
951 dtp->dt_provmod = provmod;
952 dtp->dt_vector = vector;
953 dtp->dt_varg = arg;
954 dt_dof_init(dtp);
955 (void) uname(&dtp->dt_uts);
956
957 if (dtp->dt_mods == NULL || dtp->dt_provs == NULL ||
958 dtp->dt_procs == NULL || dtp->dt_proc_env == NULL ||
959 dtp->dt_ld_path == NULL || dtp->dt_cpp_path == NULL ||
960 dtp->dt_cpp_argv == NULL)
961 return (set_open_errno(dtp, errp, EDT_NOMEM));
962
963 for (i = 0; i < DTRACEOPT_MAX; i++)
964 dtp->dt_options[i] = DTRACEOPT_UNSET;
965
966 dtp->dt_cpp_argv[0] = (char *)strbasename(dtp->dt_cpp_path);
967
968 (void) snprintf(isadef, sizeof (isadef), "-D__SUNW_D_%u",
969 (uint_t)(sizeof (void *) * NBBY));
970
971 (void) snprintf(utsdef, sizeof (utsdef), "-D__%s_%s",
972 dt_get_sysinfo(SI_SYSNAME, s1, sizeof (s1)),
973 dt_get_sysinfo(SI_RELEASE, s2, sizeof (s2)));
974
975 if (dt_cpp_add_arg(dtp, "-D__sun") == NULL ||
976 dt_cpp_add_arg(dtp, "-D__unix") == NULL ||
977 dt_cpp_add_arg(dtp, "-D__SVR4") == NULL ||
978 dt_cpp_add_arg(dtp, "-D__SUNW_D=1") == NULL ||
979 dt_cpp_add_arg(dtp, isadef) == NULL ||
980 dt_cpp_add_arg(dtp, utsdef) == NULL)
981 return (set_open_errno(dtp, errp, EDT_NOMEM));
982
983 if (flags & DTRACE_O_NODEV)
984 bcopy(&_dtrace_conf, &dtp->dt_conf, sizeof (_dtrace_conf));
985 else if (dt_ioctl(dtp, DTRACEIOC_CONF, &dtp->dt_conf) != 0)
986 return (set_open_errno(dtp, errp, errno));
987
988 if (flags & DTRACE_O_LP64)
989 dtp->dt_conf.dtc_ctfmodel = CTF_MODEL_LP64;
990 else if (flags & DTRACE_O_ILP32)
991 dtp->dt_conf.dtc_ctfmodel = CTF_MODEL_ILP32;
992
993 #ifdef __sparc
994 /*
995 * On SPARC systems, __sparc is always defined for <sys/isa_defs.h>
996 * and __sparcv9 is defined if we are doing a 64-bit compile.
997 */
998 if (dt_cpp_add_arg(dtp, "-D__sparc") == NULL)
999 return (set_open_errno(dtp, errp, EDT_NOMEM));
1000
1001 if (dtp->dt_conf.dtc_ctfmodel == CTF_MODEL_LP64 &&
1002 dt_cpp_add_arg(dtp, "-D__sparcv9") == NULL)
1003 return (set_open_errno(dtp, errp, EDT_NOMEM));
1004 #endif
1005
1006 #ifdef __x86
1007 /*
1008 * On x86 systems, __i386 is defined for <sys/isa_defs.h> for 32-bit
1009 * compiles and __amd64 is defined for 64-bit compiles. Unlike SPARC,
1010 * they are defined exclusive of one another (see PSARC 2004/619).
1011 */
1012 if (dtp->dt_conf.dtc_ctfmodel == CTF_MODEL_LP64) {
1013 if (dt_cpp_add_arg(dtp, "-D__amd64") == NULL)
1014 return (set_open_errno(dtp, errp, EDT_NOMEM));
1015 } else {
1016 if (dt_cpp_add_arg(dtp, "-D__i386") == NULL)
1017 return (set_open_errno(dtp, errp, EDT_NOMEM));
1018 }
1019 #endif
1020
1021 if (dtp->dt_conf.dtc_difversion < DIF_VERSION)
1022 return (set_open_errno(dtp, errp, EDT_DIFVERS));
1023
1024 if (dtp->dt_conf.dtc_ctfmodel == CTF_MODEL_ILP32)
1025 bcopy(_dtrace_ints_32, dtp->dt_ints, sizeof (_dtrace_ints_32));
1026 else
1027 bcopy(_dtrace_ints_64, dtp->dt_ints, sizeof (_dtrace_ints_64));
1028
1029 dtp->dt_macros = dt_idhash_create("macro", NULL, 0, UINT_MAX);
1030 dtp->dt_aggs = dt_idhash_create("aggregation", NULL,
1031 DTRACE_AGGVARIDNONE + 1, UINT_MAX);
1032
1033 dtp->dt_globals = dt_idhash_create("global", _dtrace_globals,
1034 DIF_VAR_OTHER_UBASE, DIF_VAR_OTHER_MAX);
1035
1036 dtp->dt_tls = dt_idhash_create("thread local", NULL,
1037 DIF_VAR_OTHER_UBASE, DIF_VAR_OTHER_MAX);
1038
1039 if (dtp->dt_macros == NULL || dtp->dt_aggs == NULL ||
1040 dtp->dt_globals == NULL || dtp->dt_tls == NULL)
1041 return (set_open_errno(dtp, errp, EDT_NOMEM));
1042
1043 /*
1044 * Populate the dt_macros identifier hash table by hand: we can't use
1045 * the dt_idhash_populate() mechanism because we're not yet compiling
1046 * and dtrace_update() needs to immediately reference these idents.
1047 */
1048 for (idp = _dtrace_macros; idp->di_name != NULL; idp++) {
1049 if (dt_idhash_insert(dtp->dt_macros, idp->di_name,
1050 idp->di_kind, idp->di_flags, idp->di_id, idp->di_attr,
1051 idp->di_vers, idp->di_ops ? idp->di_ops : &dt_idops_thaw,
1052 idp->di_iarg, 0) == NULL)
1053 return (set_open_errno(dtp, errp, EDT_NOMEM));
1054 }
1055
1056 /*
1057 * Update the module list using /system/object and load the values for
1058 * the macro variable definitions according to the current process.
1059 */
1060 dtrace_update(dtp);
1061
1062 /*
1063 * Select the intrinsics and typedefs we want based on the data model.
1064 * The intrinsics are under "C". The typedefs are added under "D".
1065 */
1066 if (dtp->dt_conf.dtc_ctfmodel == CTF_MODEL_ILP32) {
1067 dinp = _dtrace_intrinsics_32;
1068 dtyp = _dtrace_typedefs_32;
1069 } else {
1070 dinp = _dtrace_intrinsics_64;
1071 dtyp = _dtrace_typedefs_64;
1072 }
1073
1074 /*
1075 * Create a dynamic CTF container under the "C" scope for intrinsic
1076 * types and types defined in ANSI-C header files that are included.
1077 */
1078 if ((dmp = dtp->dt_cdefs = dt_module_create(dtp, "C")) == NULL)
1079 return (set_open_errno(dtp, errp, EDT_NOMEM));
1080
1081 if ((dmp->dm_ctfp = ctf_create(&dtp->dt_ctferr)) == NULL)
1082 return (set_open_errno(dtp, errp, EDT_CTF));
1083
1084 dt_dprintf("created CTF container for %s (%p)\n",
1085 dmp->dm_name, (void *)dmp->dm_ctfp);
1086
1087 (void) ctf_setmodel(dmp->dm_ctfp, dtp->dt_conf.dtc_ctfmodel);
1088 ctf_setspecific(dmp->dm_ctfp, dmp);
1089
1090 dmp->dm_flags = DT_DM_LOADED; /* fake up loaded bit */
1091 dmp->dm_modid = -1; /* no module ID */
1092
1093 /*
1094 * Fill the dynamic "C" CTF container with all of the intrinsic
1095 * integer and floating-point types appropriate for this data model.
1096 */
1097 for (; dinp->din_name != NULL; dinp++) {
1098 if (dinp->din_kind == CTF_K_INTEGER) {
1099 err = ctf_add_integer(dmp->dm_ctfp, CTF_ADD_ROOT,
1100 dinp->din_name, &dinp->din_data);
1101 } else {
1102 err = ctf_add_float(dmp->dm_ctfp, CTF_ADD_ROOT,
1103 dinp->din_name, &dinp->din_data);
1104 }
1105
1106 if (err == CTF_ERR) {
1107 dt_dprintf("failed to add %s to C container: %s\n",
1108 dinp->din_name, ctf_errmsg(
1109 ctf_errno(dmp->dm_ctfp)));
1110 return (set_open_errno(dtp, errp, EDT_CTF));
1111 }
1112 }
1113
1114 if (ctf_update(dmp->dm_ctfp) != 0) {
1115 dt_dprintf("failed to update C container: %s\n",
1116 ctf_errmsg(ctf_errno(dmp->dm_ctfp)));
1117 return (set_open_errno(dtp, errp, EDT_CTF));
1118 }
1119
1120 /*
1121 * Add intrinsic pointer types that are needed to initialize printf
1122 * format dictionary types (see table in dt_printf.c).
1123 */
1124 (void) ctf_add_pointer(dmp->dm_ctfp, CTF_ADD_ROOT,
1125 ctf_lookup_by_name(dmp->dm_ctfp, "void"));
1126
1127 (void) ctf_add_pointer(dmp->dm_ctfp, CTF_ADD_ROOT,
1128 ctf_lookup_by_name(dmp->dm_ctfp, "char"));
1129
1130 (void) ctf_add_pointer(dmp->dm_ctfp, CTF_ADD_ROOT,
1131 ctf_lookup_by_name(dmp->dm_ctfp, "int"));
1132
1133 if (ctf_update(dmp->dm_ctfp) != 0) {
1134 dt_dprintf("failed to update C container: %s\n",
1135 ctf_errmsg(ctf_errno(dmp->dm_ctfp)));
1136 return (set_open_errno(dtp, errp, EDT_CTF));
1137 }
1138
1139 /*
1140 * Create a dynamic CTF container under the "D" scope for types that
1141 * are defined by the D program itself or on-the-fly by the D compiler.
1142 * The "D" CTF container is a child of the "C" CTF container.
1143 */
1144 if ((dmp = dtp->dt_ddefs = dt_module_create(dtp, "D")) == NULL)
1145 return (set_open_errno(dtp, errp, EDT_NOMEM));
1146
1147 if ((dmp->dm_ctfp = ctf_create(&dtp->dt_ctferr)) == NULL)
1148 return (set_open_errno(dtp, errp, EDT_CTF));
1149
1150 dt_dprintf("created CTF container for %s (%p)\n",
1151 dmp->dm_name, (void *)dmp->dm_ctfp);
1152
1153 (void) ctf_setmodel(dmp->dm_ctfp, dtp->dt_conf.dtc_ctfmodel);
1154 ctf_setspecific(dmp->dm_ctfp, dmp);
1155
1156 dmp->dm_flags = DT_DM_LOADED; /* fake up loaded bit */
1157 dmp->dm_modid = -1; /* no module ID */
1158
1159 if (ctf_import(dmp->dm_ctfp, dtp->dt_cdefs->dm_ctfp) == CTF_ERR) {
1160 dt_dprintf("failed to import D parent container: %s\n",
1161 ctf_errmsg(ctf_errno(dmp->dm_ctfp)));
1162 return (set_open_errno(dtp, errp, EDT_CTF));
1163 }
1164
1165 /*
1166 * Fill the dynamic "D" CTF container with all of the built-in typedefs
1167 * that we need to use for our D variable and function definitions.
1168 * This ensures that basic inttypes.h names are always available to us.
1169 */
1170 for (; dtyp->dty_src != NULL; dtyp++) {
1171 if (ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT,
1172 dtyp->dty_dst, ctf_lookup_by_name(dmp->dm_ctfp,
1173 dtyp->dty_src)) == CTF_ERR) {
1174 dt_dprintf("failed to add typedef %s %s to D "
1175 "container: %s", dtyp->dty_src, dtyp->dty_dst,
1176 ctf_errmsg(ctf_errno(dmp->dm_ctfp)));
1177 return (set_open_errno(dtp, errp, EDT_CTF));
1178 }
1179 }
1180
1181 /*
1182 * Insert a CTF ID corresponding to a pointer to a type of kind
1183 * CTF_K_FUNCTION we can use in the compiler for function pointers.
1184 * CTF treats all function pointers as "int (*)()" so we only need one.
1185 */
1186 ctc.ctc_return = ctf_lookup_by_name(dmp->dm_ctfp, "int");
1187 ctc.ctc_argc = 0;
1188 ctc.ctc_flags = 0;
1189
1190 dtp->dt_type_func = ctf_add_function(dmp->dm_ctfp,
1191 CTF_ADD_ROOT, &ctc, NULL);
1192
1193 dtp->dt_type_fptr = ctf_add_pointer(dmp->dm_ctfp,
1194 CTF_ADD_ROOT, dtp->dt_type_func);
1195
1196 /*
1197 * We also insert CTF definitions for the special D intrinsic types
1198 * string and <DYN> into the D container. The string type is added
1199 * as a typedef of char[n]. The <DYN> type is an alias for void.
1200 * We compare types to these special CTF ids throughout the compiler.
1201 */
1202 ctr.ctr_contents = ctf_lookup_by_name(dmp->dm_ctfp, "char");
1203 ctr.ctr_index = ctf_lookup_by_name(dmp->dm_ctfp, "long");
1204 ctr.ctr_nelems = _dtrace_strsize;
1205
1206 dtp->dt_type_str = ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT,
1207 "string", ctf_add_array(dmp->dm_ctfp, CTF_ADD_ROOT, &ctr));
1208
1209 dtp->dt_type_dyn = ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT,
1210 "<DYN>", ctf_lookup_by_name(dmp->dm_ctfp, "void"));
1211
1212 dtp->dt_type_stack = ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT,
1213 "stack", ctf_lookup_by_name(dmp->dm_ctfp, "void"));
1214
1215 dtp->dt_type_symaddr = ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT,
1216 "_symaddr", ctf_lookup_by_name(dmp->dm_ctfp, "void"));
1217
1218 dtp->dt_type_usymaddr = ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT,
1219 "_usymaddr", ctf_lookup_by_name(dmp->dm_ctfp, "void"));
1220
1221 if (dtp->dt_type_func == CTF_ERR || dtp->dt_type_fptr == CTF_ERR ||
1222 dtp->dt_type_str == CTF_ERR || dtp->dt_type_dyn == CTF_ERR ||
1223 dtp->dt_type_stack == CTF_ERR || dtp->dt_type_symaddr == CTF_ERR ||
1224 dtp->dt_type_usymaddr == CTF_ERR) {
1225 dt_dprintf("failed to add intrinsic to D container: %s\n",
1226 ctf_errmsg(ctf_errno(dmp->dm_ctfp)));
1227 return (set_open_errno(dtp, errp, EDT_CTF));
1228 }
1229
1230 if (ctf_update(dmp->dm_ctfp) != 0) {
1231 dt_dprintf("failed update D container: %s\n",
1232 ctf_errmsg(ctf_errno(dmp->dm_ctfp)));
1233 return (set_open_errno(dtp, errp, EDT_CTF));
1234 }
1235
1236 /*
1237 * Initialize the integer description table used to convert integer
1238 * constants to the appropriate types. Refer to the comments above
1239 * dt_node_int() for a complete description of how this table is used.
1240 */
1241 for (i = 0; i < sizeof (dtp->dt_ints) / sizeof (dtp->dt_ints[0]); i++) {
1242 if (dtrace_lookup_by_type(dtp, DTRACE_OBJ_EVERY,
1243 dtp->dt_ints[i].did_name, &dtt) != 0) {
1244 dt_dprintf("failed to lookup integer type %s: %s\n",
1245 dtp->dt_ints[i].did_name,
1246 dtrace_errmsg(dtp, dtrace_errno(dtp)));
1247 return (set_open_errno(dtp, errp, dtp->dt_errno));
1248 }
1249 dtp->dt_ints[i].did_ctfp = dtt.dtt_ctfp;
1250 dtp->dt_ints[i].did_type = dtt.dtt_type;
1251 }
1252
1253 /*
1254 * Now that we've created the "C" and "D" containers, move them to the
1255 * start of the module list so that these types and symbols are found
1256 * first (for stability) when iterating through the module list.
1257 */
1258 dt_list_delete(&dtp->dt_modlist, dtp->dt_ddefs);
1259 dt_list_prepend(&dtp->dt_modlist, dtp->dt_ddefs);
1260
1261 dt_list_delete(&dtp->dt_modlist, dtp->dt_cdefs);
1262 dt_list_prepend(&dtp->dt_modlist, dtp->dt_cdefs);
1263
1264 if (dt_pfdict_create(dtp) == -1)
1265 return (set_open_errno(dtp, errp, dtp->dt_errno));
1266
1267 /*
1268 * If we are opening libdtrace DTRACE_O_NODEV enable C_ZDEFS by default
1269 * because without /dev/dtrace open, we will not be able to load the
1270 * names and attributes of any providers or probes from the kernel.
1271 */
1272 if (flags & DTRACE_O_NODEV)
1273 dtp->dt_cflags |= DTRACE_C_ZDEFS;
1274
1275 /*
1276 * Load hard-wired inlines into the definition cache by calling the
1277 * compiler on the raw definition string defined above.
1278 */
1279 if ((pgp = dtrace_program_strcompile(dtp, _dtrace_hardwire,
1280 DTRACE_PROBESPEC_NONE, DTRACE_C_EMPTY, 0, NULL)) == NULL) {
1281 dt_dprintf("failed to load hard-wired definitions: %s\n",
1282 dtrace_errmsg(dtp, dtrace_errno(dtp)));
1283 return (set_open_errno(dtp, errp, EDT_HARDWIRE));
1284 }
1285
1286 dt_program_destroy(dtp, pgp);
1287
1288 /*
1289 * Set up the default DTrace library path. Once set, the next call to
1290 * dt_compile() will compile all the libraries. We intentionally defer
1291 * library processing to improve overhead for clients that don't ever
1292 * compile, and to provide better error reporting (because the full
1293 * reporting of compiler errors requires dtrace_open() to succeed).
1294 */
1295 if (dtrace_setopt(dtp, "libdir", _dtrace_libdir) != 0)
1296 return (set_open_errno(dtp, errp, dtp->dt_errno));
1297
1298 return (dtp);
1299 }
1300
1301 dtrace_hdl_t *
1302 dtrace_open(int version, int flags, int *errp)
1303 {
1304 return (dt_vopen(version, flags, errp, NULL, NULL));
1305 }
1306
1307 dtrace_hdl_t *
1308 dtrace_vopen(int version, int flags, int *errp,
1309 const dtrace_vector_t *vector, void *arg)
1310 {
1311 return (dt_vopen(version, flags, errp, vector, arg));
1312 }
1313
1314 void
1315 dtrace_close(dtrace_hdl_t *dtp)
1316 {
1317 dt_ident_t *idp, *ndp;
1318 dt_module_t *dmp;
1319 dt_provider_t *pvp;
1320 dtrace_prog_t *pgp;
1321 dt_xlator_t *dxp;
1322 dt_dirpath_t *dirp;
1323 int i;
1324
1325 if (dtp->dt_procs != NULL)
1326 dt_proc_fini(dtp);
1327
1328 while ((pgp = dt_list_next(&dtp->dt_programs)) != NULL)
1329 dt_program_destroy(dtp, pgp);
1330
1331 while ((dxp = dt_list_next(&dtp->dt_xlators)) != NULL)
1332 dt_xlator_destroy(dtp, dxp);
1333
1334 dt_free(dtp, dtp->dt_xlatormap);
1335
1336 for (idp = dtp->dt_externs; idp != NULL; idp = ndp) {
1337 ndp = idp->di_next;
1338 dt_ident_destroy(idp);
1339 }
1340
1341 if (dtp->dt_macros != NULL)
1342 dt_idhash_destroy(dtp->dt_macros);
1343 if (dtp->dt_aggs != NULL)
1344 dt_idhash_destroy(dtp->dt_aggs);
1345 if (dtp->dt_globals != NULL)
1346 dt_idhash_destroy(dtp->dt_globals);
1347 if (dtp->dt_tls != NULL)
1348 dt_idhash_destroy(dtp->dt_tls);
1349
1350 while ((dmp = dt_list_next(&dtp->dt_modlist)) != NULL)
1351 dt_module_destroy(dtp, dmp);
1352
1353 while ((pvp = dt_list_next(&dtp->dt_provlist)) != NULL)
1354 dt_provider_destroy(dtp, pvp);
1355
1356 if (dtp->dt_fd != -1)
1357 (void) close(dtp->dt_fd);
1358 if (dtp->dt_ftfd != -1)
1359 (void) close(dtp->dt_ftfd);
1360 if (dtp->dt_cdefs_fd != -1)
1361 (void) close(dtp->dt_cdefs_fd);
1362 if (dtp->dt_ddefs_fd != -1)
1363 (void) close(dtp->dt_ddefs_fd);
1364 if (dtp->dt_stdout_fd != -1)
1365 (void) close(dtp->dt_stdout_fd);
1366
1367 dt_epid_destroy(dtp);
1368 dt_aggid_destroy(dtp);
1369 dt_format_destroy(dtp);
1370 dt_strdata_destroy(dtp);
1371 dt_buffered_destroy(dtp);
1372 dt_aggregate_destroy(dtp);
1373 dt_pfdict_destroy(dtp);
1374 dt_provmod_destroy(&dtp->dt_provmod);
1375 dt_dof_fini(dtp);
1376
1377 for (i = 1; i < dtp->dt_cpp_argc; i++)
1378 free(dtp->dt_cpp_argv[i]);
1379
1380 while ((dirp = dt_list_next(&dtp->dt_lib_path)) != NULL) {
1381 dt_list_delete(&dtp->dt_lib_path, dirp);
1382 free(dirp->dir_path);
1383 free(dirp);
1384 }
1385
1386 free(dtp->dt_cpp_argv);
1387 free(dtp->dt_cpp_path);
1388 free(dtp->dt_ld_path);
1389
1390 free(dtp->dt_mods);
1391 free(dtp->dt_provs);
1392 free(dtp);
1393 }
1394
1395 int
1396 dtrace_provider_modules(dtrace_hdl_t *dtp, const char **mods, int nmods)
1397 {
1398 dt_provmod_t *prov;
1399 int i = 0;
1400
1401 for (prov = dtp->dt_provmod; prov != NULL; prov = prov->dp_next, i++) {
1402 if (i < nmods)
1403 mods[i] = prov->dp_name;
1404 }
1405
1406 return (i);
1407 }
1408
1409 int
1410 dtrace_ctlfd(dtrace_hdl_t *dtp)
1411 {
1412 return (dtp->dt_fd);
1413 }