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