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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <sys/types.h> 30 #include <sys/modctl.h> 31 #include <sys/systeminfo.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 <zone.h> 43 #include <assert.h> 44 45 #define _POSIX_PTHREAD_SEMANTICS 46 #include <dirent.h> 47 #undef _POSIX_PTHREAD_SEMANTICS 48 49 #include <dt_impl.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 #define DT_VERS_1_0 DT_VERSION_NUMBER(1, 0, 0) 83 #define DT_VERS_1_1 DT_VERSION_NUMBER(1, 1, 0) 84 #define DT_VERS_1_2 DT_VERSION_NUMBER(1, 2, 0) 85 #define DT_VERS_LATEST DT_VERS_1_2 86 #define DT_VERS_STRING "Sun D 1.2" 87 88 const dt_version_t _dtrace_versions[] = { 89 DT_VERS_1_0, /* D API 1.0.0 (PSARC 2001/466) Solaris 10 FCS */ 90 DT_VERS_1_1, /* D API 1.1.0 Solaris Express 6/05 */ 91 DT_VERS_1_2, /* D API 1.2.0 Solaris 10 Update 1 */ 92 0 93 }; 94 95 /* 96 * Table of global identifiers. This is used to populate the global identifier 97 * hash when a new dtrace client open occurs. For more info see dt_ident.h. 98 * The global identifiers that represent functions use the dt_idops_func ops 99 * and specify the private data pointer as a prototype string which is parsed 100 * when the identifier is first encountered. These prototypes look like ANSI 101 * C function prototypes except that the special symbol "@" can be used as a 102 * wildcard to represent a single parameter of any type (i.e. any dt_node_t). 103 * The standard "..." notation can also be used to represent varargs. An empty 104 * parameter list is taken to mean void (that is, no arguments are permitted). 105 * A parameter enclosed in square brackets (e.g. "[int]") denotes an optional 106 * argument. 107 */ 108 static const dt_ident_t _dtrace_globals[] = { 109 { "alloca", DT_IDENT_FUNC, 0, DIF_SUBR_ALLOCA, DT_ATTR_STABCMN, DT_VERS_1_0, 110 &dt_idops_func, "void *(size_t)" }, 111 { "arg0", DT_IDENT_SCALAR, 0, DIF_VAR_ARG0, DT_ATTR_STABCMN, DT_VERS_1_0, 112 &dt_idops_type, "int64_t" }, 113 { "arg1", DT_IDENT_SCALAR, 0, DIF_VAR_ARG1, DT_ATTR_STABCMN, DT_VERS_1_0, 114 &dt_idops_type, "int64_t" }, 115 { "arg2", DT_IDENT_SCALAR, 0, DIF_VAR_ARG2, DT_ATTR_STABCMN, DT_VERS_1_0, 116 &dt_idops_type, "int64_t" }, 117 { "arg3", DT_IDENT_SCALAR, 0, DIF_VAR_ARG3, DT_ATTR_STABCMN, DT_VERS_1_0, 118 &dt_idops_type, "int64_t" }, 119 { "arg4", DT_IDENT_SCALAR, 0, DIF_VAR_ARG4, DT_ATTR_STABCMN, DT_VERS_1_0, 120 &dt_idops_type, "int64_t" }, 121 { "arg5", DT_IDENT_SCALAR, 0, DIF_VAR_ARG5, DT_ATTR_STABCMN, DT_VERS_1_0, 122 &dt_idops_type, "int64_t" }, 123 { "arg6", DT_IDENT_SCALAR, 0, DIF_VAR_ARG6, DT_ATTR_STABCMN, DT_VERS_1_0, 124 &dt_idops_type, "int64_t" }, 125 { "arg7", DT_IDENT_SCALAR, 0, DIF_VAR_ARG7, DT_ATTR_STABCMN, DT_VERS_1_0, 126 &dt_idops_type, "int64_t" }, 127 { "arg8", DT_IDENT_SCALAR, 0, DIF_VAR_ARG8, DT_ATTR_STABCMN, DT_VERS_1_0, 128 &dt_idops_type, "int64_t" }, 129 { "arg9", DT_IDENT_SCALAR, 0, DIF_VAR_ARG9, DT_ATTR_STABCMN, DT_VERS_1_0, 130 &dt_idops_type, "int64_t" }, 131 { "args", DT_IDENT_ARRAY, 0, DIF_VAR_ARGS, DT_ATTR_STABCMN, DT_VERS_1_0, 132 &dt_idops_args, NULL }, 133 { "avg", DT_IDENT_AGGFUNC, 0, DTRACEAGG_AVG, DT_ATTR_STABCMN, DT_VERS_1_0, 134 &dt_idops_func, "void(@)" }, 135 { "basename", DT_IDENT_FUNC, 0, DIF_SUBR_BASENAME, DT_ATTR_STABCMN, DT_VERS_1_0, 136 &dt_idops_func, "string(const char *)" }, 137 { "bcopy", DT_IDENT_FUNC, 0, DIF_SUBR_BCOPY, DT_ATTR_STABCMN, DT_VERS_1_0, 138 &dt_idops_func, "void(void *, void *, size_t)" }, 139 { "breakpoint", DT_IDENT_ACTFUNC, 0, DT_ACT_BREAKPOINT, 140 DT_ATTR_STABCMN, DT_VERS_1_0, 141 &dt_idops_func, "void()" }, 142 { "caller", DT_IDENT_SCALAR, 0, DIF_VAR_CALLER, DT_ATTR_STABCMN, DT_VERS_1_0, 143 &dt_idops_type, "uintptr_t" }, 144 { "chill", DT_IDENT_ACTFUNC, 0, DT_ACT_CHILL, DT_ATTR_STABCMN, DT_VERS_1_0, 145 &dt_idops_func, "void(int)" }, 146 { "cleanpath", DT_IDENT_FUNC, 0, DIF_SUBR_CLEANPATH, DT_ATTR_STABCMN, 147 DT_VERS_1_0, &dt_idops_func, "string(const char *)" }, 148 { "clear", DT_IDENT_ACTFUNC, 0, DT_ACT_CLEAR, DT_ATTR_STABCMN, DT_VERS_1_0, 149 &dt_idops_func, "void(...)" }, 150 { "commit", DT_IDENT_ACTFUNC, 0, DT_ACT_COMMIT, DT_ATTR_STABCMN, DT_VERS_1_0, 151 &dt_idops_func, "void(int)" }, 152 { "copyin", DT_IDENT_FUNC, 0, DIF_SUBR_COPYIN, DT_ATTR_STABCMN, DT_VERS_1_0, 153 &dt_idops_func, "void *(uintptr_t, size_t)" }, 154 { "copyinstr", DT_IDENT_FUNC, 0, DIF_SUBR_COPYINSTR, 155 DT_ATTR_STABCMN, DT_VERS_1_0, 156 &dt_idops_func, "string(uintptr_t, [size_t])" }, 157 { "copyinto", DT_IDENT_FUNC, 0, DIF_SUBR_COPYINTO, DT_ATTR_STABCMN, 158 DT_VERS_1_0, &dt_idops_func, "void(uintptr_t, size_t, void *)" }, 159 { "copyout", DT_IDENT_FUNC, 0, DIF_SUBR_COPYOUT, DT_ATTR_STABCMN, DT_VERS_1_0, 160 &dt_idops_func, "void(void *, uintptr_t, size_t)" }, 161 { "copyoutstr", DT_IDENT_FUNC, 0, DIF_SUBR_COPYOUTSTR, 162 DT_ATTR_STABCMN, DT_VERS_1_0, 163 &dt_idops_func, "void(char *, uintptr_t, size_t)" }, 164 { "count", DT_IDENT_AGGFUNC, 0, DTRACEAGG_COUNT, DT_ATTR_STABCMN, DT_VERS_1_0, 165 &dt_idops_func, "void()" }, 166 { "curthread", DT_IDENT_SCALAR, 0, DIF_VAR_CURTHREAD, 167 { DTRACE_STABILITY_STABLE, DTRACE_STABILITY_PRIVATE, 168 DTRACE_CLASS_COMMON }, DT_VERS_1_0, 169 &dt_idops_type, "genunix`kthread_t *" }, 170 { "ddi_pathname", DT_IDENT_FUNC, 0, DIF_SUBR_DDI_PATHNAME, 171 DT_ATTR_EVOLCMN, DT_VERS_1_0, 172 &dt_idops_func, "string(void *, int64_t)" }, 173 { "denormalize", DT_IDENT_ACTFUNC, 0, DT_ACT_DENORMALIZE, DT_ATTR_STABCMN, 174 DT_VERS_1_0, &dt_idops_func, "void(...)" }, 175 { "dirname", DT_IDENT_FUNC, 0, DIF_SUBR_DIRNAME, DT_ATTR_STABCMN, DT_VERS_1_0, 176 &dt_idops_func, "string(const char *)" }, 177 { "discard", DT_IDENT_ACTFUNC, 0, DT_ACT_DISCARD, DT_ATTR_STABCMN, DT_VERS_1_0, 178 &dt_idops_func, "void(int)" }, 179 { "epid", DT_IDENT_SCALAR, 0, DIF_VAR_EPID, DT_ATTR_STABCMN, DT_VERS_1_0, 180 &dt_idops_type, "uint_t" }, 181 { "execname", DT_IDENT_SCALAR, 0, DIF_VAR_EXECNAME, 182 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" }, 183 { "exit", DT_IDENT_ACTFUNC, 0, DT_ACT_EXIT, DT_ATTR_STABCMN, DT_VERS_1_0, 184 &dt_idops_func, "void(int)" }, 185 { "freopen", DT_IDENT_ACTFUNC, 0, DT_ACT_FREOPEN, DT_ATTR_STABCMN, 186 DT_VERS_1_1, &dt_idops_func, "void(@, ...)" }, 187 { "ftruncate", DT_IDENT_ACTFUNC, 0, DT_ACT_FTRUNCATE, DT_ATTR_STABCMN, 188 DT_VERS_1_0, &dt_idops_func, "void()" }, 189 { "getmajor", DT_IDENT_FUNC, 0, DIF_SUBR_GETMAJOR, 190 DT_ATTR_EVOLCMN, DT_VERS_1_0, 191 &dt_idops_func, "genunix`major_t(genunix`dev_t)" }, 192 { "getminor", DT_IDENT_FUNC, 0, DIF_SUBR_GETMINOR, 193 DT_ATTR_EVOLCMN, DT_VERS_1_0, 194 &dt_idops_func, "genunix`minor_t(genunix`dev_t)" }, 195 { "id", DT_IDENT_SCALAR, 0, DIF_VAR_ID, DT_ATTR_STABCMN, DT_VERS_1_0, 196 &dt_idops_type, "uint_t" }, 197 { "index", DT_IDENT_FUNC, 0, DIF_SUBR_INDEX, DT_ATTR_STABCMN, DT_VERS_1_1, 198 &dt_idops_func, "int(const char *, const char *, [int])" }, 199 { "ipl", DT_IDENT_SCALAR, 0, DIF_VAR_IPL, DT_ATTR_STABCMN, DT_VERS_1_0, 200 &dt_idops_type, "uint_t" }, 201 { "jstack", DT_IDENT_ACTFUNC, 0, DT_ACT_JSTACK, DT_ATTR_STABCMN, DT_VERS_1_0, 202 &dt_idops_func, "stack(...)" }, 203 { "lltostr", DT_IDENT_FUNC, 0, DIF_SUBR_LLTOSTR, DT_ATTR_STABCMN, DT_VERS_1_0, 204 &dt_idops_func, "string(int64_t)" }, 205 { "lquantize", DT_IDENT_AGGFUNC, 0, DTRACEAGG_LQUANTIZE, 206 DT_ATTR_STABCMN, DT_VERS_1_0, 207 &dt_idops_func, "void(@, int32_t, int32_t, ...)" }, 208 { "max", DT_IDENT_AGGFUNC, 0, DTRACEAGG_MAX, DT_ATTR_STABCMN, DT_VERS_1_0, 209 &dt_idops_func, "void(@)" }, 210 { "min", DT_IDENT_AGGFUNC, 0, DTRACEAGG_MIN, DT_ATTR_STABCMN, DT_VERS_1_0, 211 &dt_idops_func, "void(@)" }, 212 { "msgdsize", DT_IDENT_FUNC, 0, DIF_SUBR_MSGDSIZE, 213 DT_ATTR_STABCMN, DT_VERS_1_0, 214 &dt_idops_func, "size_t(mblk_t *)" }, 215 { "msgsize", DT_IDENT_FUNC, 0, DIF_SUBR_MSGSIZE, 216 DT_ATTR_STABCMN, DT_VERS_1_0, 217 &dt_idops_func, "size_t(mblk_t *)" }, 218 { "mutex_owned", DT_IDENT_FUNC, 0, DIF_SUBR_MUTEX_OWNED, 219 DT_ATTR_EVOLCMN, DT_VERS_1_0, 220 &dt_idops_func, "int(genunix`kmutex_t *)" }, 221 { "mutex_owner", DT_IDENT_FUNC, 0, DIF_SUBR_MUTEX_OWNER, 222 DT_ATTR_EVOLCMN, DT_VERS_1_0, 223 &dt_idops_func, "genunix`kthread_t *(genunix`kmutex_t *)" }, 224 { "mutex_type_adaptive", DT_IDENT_FUNC, 0, DIF_SUBR_MUTEX_TYPE_ADAPTIVE, 225 DT_ATTR_EVOLCMN, DT_VERS_1_0, 226 &dt_idops_func, "int(genunix`kmutex_t *)" }, 227 { "mutex_type_spin", DT_IDENT_FUNC, 0, DIF_SUBR_MUTEX_TYPE_SPIN, 228 DT_ATTR_EVOLCMN, DT_VERS_1_0, 229 &dt_idops_func, "int(genunix`kmutex_t *)" }, 230 { "normalize", DT_IDENT_ACTFUNC, 0, DT_ACT_NORMALIZE, DT_ATTR_STABCMN, 231 DT_VERS_1_0, &dt_idops_func, "void(...)" }, 232 { "panic", DT_IDENT_ACTFUNC, 0, DT_ACT_PANIC, DT_ATTR_STABCMN, DT_VERS_1_0, 233 &dt_idops_func, "void()" }, 234 { "pid", DT_IDENT_SCALAR, 0, DIF_VAR_PID, DT_ATTR_STABCMN, DT_VERS_1_0, 235 &dt_idops_type, "pid_t" }, 236 { "printa", DT_IDENT_ACTFUNC, 0, DT_ACT_PRINTA, DT_ATTR_STABCMN, DT_VERS_1_0, 237 &dt_idops_func, "void(@, ...)" }, 238 { "printf", DT_IDENT_ACTFUNC, 0, DT_ACT_PRINTF, DT_ATTR_STABCMN, DT_VERS_1_0, 239 &dt_idops_func, "void(@, ...)" }, 240 { "probefunc", DT_IDENT_SCALAR, 0, DIF_VAR_PROBEFUNC, 241 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" }, 242 { "probemod", DT_IDENT_SCALAR, 0, DIF_VAR_PROBEMOD, 243 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" }, 244 { "probename", DT_IDENT_SCALAR, 0, DIF_VAR_PROBENAME, 245 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" }, 246 { "probeprov", DT_IDENT_SCALAR, 0, DIF_VAR_PROBEPROV, 247 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" }, 248 { "progenyof", DT_IDENT_FUNC, 0, DIF_SUBR_PROGENYOF, 249 DT_ATTR_STABCMN, DT_VERS_1_0, 250 &dt_idops_func, "int(pid_t)" }, 251 { "quantize", DT_IDENT_AGGFUNC, 0, DTRACEAGG_QUANTIZE, 252 DT_ATTR_STABCMN, DT_VERS_1_0, 253 &dt_idops_func, "void(@)" }, 254 { "raise", DT_IDENT_ACTFUNC, 0, DT_ACT_RAISE, DT_ATTR_STABCMN, DT_VERS_1_0, 255 &dt_idops_func, "void(int)" }, 256 { "rand", DT_IDENT_FUNC, 0, DIF_SUBR_RAND, DT_ATTR_STABCMN, DT_VERS_1_0, 257 &dt_idops_func, "int()" }, 258 { "rindex", DT_IDENT_FUNC, 0, DIF_SUBR_RINDEX, DT_ATTR_STABCMN, DT_VERS_1_1, 259 &dt_idops_func, "int(const char *, const char *, [int])" }, 260 { "rw_iswriter", DT_IDENT_FUNC, 0, DIF_SUBR_RW_ISWRITER, 261 DT_ATTR_EVOLCMN, DT_VERS_1_0, 262 &dt_idops_func, "int(genunix`krwlock_t *)" }, 263 { "rw_read_held", DT_IDENT_FUNC, 0, DIF_SUBR_RW_READ_HELD, 264 DT_ATTR_EVOLCMN, DT_VERS_1_0, 265 &dt_idops_func, "int(genunix`krwlock_t *)" }, 266 { "rw_write_held", DT_IDENT_FUNC, 0, DIF_SUBR_RW_WRITE_HELD, 267 DT_ATTR_EVOLCMN, DT_VERS_1_0, 268 &dt_idops_func, "int(genunix`krwlock_t *)" }, 269 { "self", DT_IDENT_PTR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0, 270 &dt_idops_type, "void" }, 271 { "speculate", DT_IDENT_ACTFUNC, 0, DT_ACT_SPECULATE, 272 DT_ATTR_STABCMN, DT_VERS_1_0, 273 &dt_idops_func, "void(int)" }, 274 { "speculation", DT_IDENT_FUNC, 0, DIF_SUBR_SPECULATION, 275 DT_ATTR_STABCMN, DT_VERS_1_0, 276 &dt_idops_func, "int()" }, 277 { "stack", DT_IDENT_ACTFUNC, 0, DT_ACT_STACK, DT_ATTR_STABCMN, DT_VERS_1_0, 278 &dt_idops_func, "stack(...)" }, 279 { "stackdepth", DT_IDENT_SCALAR, 0, DIF_VAR_STACKDEPTH, 280 DT_ATTR_STABCMN, DT_VERS_1_0, 281 &dt_idops_type, "uint32_t" }, 282 { "stop", DT_IDENT_ACTFUNC, 0, DT_ACT_STOP, DT_ATTR_STABCMN, DT_VERS_1_0, 283 &dt_idops_func, "void()" }, 284 { "strchr", DT_IDENT_FUNC, 0, DIF_SUBR_STRCHR, DT_ATTR_STABCMN, DT_VERS_1_1, 285 &dt_idops_func, "string(const char *, char)" }, 286 { "strlen", DT_IDENT_FUNC, 0, DIF_SUBR_STRLEN, DT_ATTR_STABCMN, DT_VERS_1_0, 287 &dt_idops_func, "size_t(const char *)" }, 288 { "strjoin", DT_IDENT_FUNC, 0, DIF_SUBR_STRJOIN, DT_ATTR_STABCMN, DT_VERS_1_0, 289 &dt_idops_func, "string(const char *, const char *)" }, 290 { "strrchr", DT_IDENT_FUNC, 0, DIF_SUBR_STRRCHR, DT_ATTR_STABCMN, DT_VERS_1_1, 291 &dt_idops_func, "string(const char *, char)" }, 292 { "strstr", DT_IDENT_FUNC, 0, DIF_SUBR_STRSTR, DT_ATTR_STABCMN, DT_VERS_1_1, 293 &dt_idops_func, "string(const char *, const char *)" }, 294 { "strtok", DT_IDENT_FUNC, 0, DIF_SUBR_STRTOK, DT_ATTR_STABCMN, DT_VERS_1_1, 295 &dt_idops_func, "string(const char *, const char *)" }, 296 { "substr", DT_IDENT_FUNC, 0, DIF_SUBR_SUBSTR, DT_ATTR_STABCMN, DT_VERS_1_1, 297 &dt_idops_func, "string(const char *, int, [int])" }, 298 { "sum", DT_IDENT_AGGFUNC, 0, DTRACEAGG_SUM, DT_ATTR_STABCMN, DT_VERS_1_0, 299 &dt_idops_func, "void(@)" }, 300 { "system", DT_IDENT_ACTFUNC, 0, DT_ACT_SYSTEM, DT_ATTR_STABCMN, DT_VERS_1_0, 301 &dt_idops_func, "void(@, ...)" }, 302 { "this", DT_IDENT_PTR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0, 303 &dt_idops_type, "void" }, 304 { "tid", DT_IDENT_SCALAR, 0, DIF_VAR_TID, DT_ATTR_STABCMN, DT_VERS_1_0, 305 &dt_idops_type, "id_t" }, 306 { "timestamp", DT_IDENT_SCALAR, 0, DIF_VAR_TIMESTAMP, 307 DT_ATTR_STABCMN, DT_VERS_1_0, 308 &dt_idops_type, "uint64_t" }, 309 { "trace", DT_IDENT_ACTFUNC, 0, DT_ACT_TRACE, DT_ATTR_STABCMN, DT_VERS_1_0, 310 &dt_idops_func, "void(@)" }, 311 { "tracemem", DT_IDENT_ACTFUNC, 0, DT_ACT_TRACEMEM, 312 DT_ATTR_STABCMN, DT_VERS_1_0, 313 &dt_idops_func, "void(@, size_t)" }, 314 { "trunc", DT_IDENT_ACTFUNC, 0, DT_ACT_TRUNC, DT_ATTR_STABCMN, 315 DT_VERS_1_0, &dt_idops_func, "void(...)" }, 316 { "uregs", DT_IDENT_ARRAY, 0, DIF_VAR_UREGS, DT_ATTR_STABCMN, DT_VERS_1_0, 317 &dt_idops_regs, NULL }, 318 { "ustack", DT_IDENT_ACTFUNC, 0, DT_ACT_USTACK, DT_ATTR_STABCMN, DT_VERS_1_0, 319 &dt_idops_func, "stack(...)" }, 320 { "ustackdepth", DT_IDENT_SCALAR, 0, DIF_VAR_USTACKDEPTH, 321 DT_ATTR_STABCMN, DT_VERS_1_2, 322 &dt_idops_type, "uint32_t" }, 323 { "vtimestamp", DT_IDENT_SCALAR, 0, DIF_VAR_VTIMESTAMP, 324 DT_ATTR_STABCMN, DT_VERS_1_0, 325 &dt_idops_type, "uint64_t" }, 326 { "walltimestamp", DT_IDENT_SCALAR, 0, DIF_VAR_WALLTIMESTAMP, 327 DT_ATTR_STABCMN, DT_VERS_1_0, 328 &dt_idops_type, "uint64_t" }, 329 { "zonename", DT_IDENT_SCALAR, 0, DIF_VAR_ZONENAME, 330 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" }, 331 { NULL, 0, 0, 0, { 0, 0, 0 }, 0, NULL, NULL } 332 }; 333 334 /* 335 * Tables of ILP32 intrinsic integer and floating-point type templates to use 336 * to populate the dynamic "C" CTF type container. 337 */ 338 static const dt_intrinsic_t _dtrace_intrinsics_32[] = { 339 { "void", { CTF_INT_SIGNED, 0, 0 }, CTF_K_INTEGER }, 340 { "signed", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 341 { "unsigned", { 0, 0, 32 }, CTF_K_INTEGER }, 342 { "char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 343 { "short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER }, 344 { "int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 345 { "long", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 346 { "long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 347 { "signed char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 348 { "signed short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER }, 349 { "signed int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 350 { "signed long", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 351 { "signed long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 352 { "unsigned char", { CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 353 { "unsigned short", { 0, 0, 16 }, CTF_K_INTEGER }, 354 { "unsigned int", { 0, 0, 32 }, CTF_K_INTEGER }, 355 { "unsigned long", { 0, 0, 32 }, CTF_K_INTEGER }, 356 { "unsigned long long", { 0, 0, 64 }, CTF_K_INTEGER }, 357 { "_Bool", { CTF_INT_BOOL, 0, 8 }, CTF_K_INTEGER }, 358 { "float", { CTF_FP_SINGLE, 0, 32 }, CTF_K_FLOAT }, 359 { "double", { CTF_FP_DOUBLE, 0, 64 }, CTF_K_FLOAT }, 360 { "long double", { CTF_FP_LDOUBLE, 0, 128 }, CTF_K_FLOAT }, 361 { "float imaginary", { CTF_FP_IMAGRY, 0, 32 }, CTF_K_FLOAT }, 362 { "double imaginary", { CTF_FP_DIMAGRY, 0, 64 }, CTF_K_FLOAT }, 363 { "long double imaginary", { CTF_FP_LDIMAGRY, 0, 128 }, CTF_K_FLOAT }, 364 { "float complex", { CTF_FP_CPLX, 0, 64 }, CTF_K_FLOAT }, 365 { "double complex", { CTF_FP_DCPLX, 0, 128 }, CTF_K_FLOAT }, 366 { "long double complex", { CTF_FP_LDCPLX, 0, 256 }, CTF_K_FLOAT }, 367 { NULL, { 0, 0, 0 }, 0 } 368 }; 369 370 /* 371 * Tables of LP64 intrinsic integer and floating-point type templates to use 372 * to populate the dynamic "C" CTF type container. 373 */ 374 static const dt_intrinsic_t _dtrace_intrinsics_64[] = { 375 { "void", { CTF_INT_SIGNED, 0, 0 }, CTF_K_INTEGER }, 376 { "signed", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 377 { "unsigned", { 0, 0, 32 }, CTF_K_INTEGER }, 378 { "char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 379 { "short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER }, 380 { "int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 381 { "long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 382 { "long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 383 { "signed char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 384 { "signed short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER }, 385 { "signed int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 386 { "signed long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 387 { "signed long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 388 { "unsigned char", { CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 389 { "unsigned short", { 0, 0, 16 }, CTF_K_INTEGER }, 390 { "unsigned int", { 0, 0, 32 }, CTF_K_INTEGER }, 391 { "unsigned long", { 0, 0, 64 }, CTF_K_INTEGER }, 392 { "unsigned long long", { 0, 0, 64 }, CTF_K_INTEGER }, 393 { "_Bool", { CTF_INT_BOOL, 0, 8 }, CTF_K_INTEGER }, 394 { "float", { CTF_FP_SINGLE, 0, 32 }, CTF_K_FLOAT }, 395 { "double", { CTF_FP_DOUBLE, 0, 64 }, CTF_K_FLOAT }, 396 { "long double", { CTF_FP_LDOUBLE, 0, 128 }, CTF_K_FLOAT }, 397 { "float imaginary", { CTF_FP_IMAGRY, 0, 32 }, CTF_K_FLOAT }, 398 { "double imaginary", { CTF_FP_DIMAGRY, 0, 64 }, CTF_K_FLOAT }, 399 { "long double imaginary", { CTF_FP_LDIMAGRY, 0, 128 }, CTF_K_FLOAT }, 400 { "float complex", { CTF_FP_CPLX, 0, 64 }, CTF_K_FLOAT }, 401 { "double complex", { CTF_FP_DCPLX, 0, 128 }, CTF_K_FLOAT }, 402 { "long double complex", { CTF_FP_LDCPLX, 0, 256 }, CTF_K_FLOAT }, 403 { NULL, { 0, 0, 0 }, 0 } 404 }; 405 406 /* 407 * Tables of ILP32 typedefs to use to populate the dynamic "D" CTF container. 408 * These aliases ensure that D definitions can use typical <sys/types.h> names. 409 */ 410 static const dt_typedef_t _dtrace_typedefs_32[] = { 411 { "char", "int8_t" }, 412 { "short", "int16_t" }, 413 { "int", "int32_t" }, 414 { "long long", "int64_t" }, 415 { "int", "intptr_t" }, 416 { "int", "ssize_t" }, 417 { "unsigned char", "uint8_t" }, 418 { "unsigned short", "uint16_t" }, 419 { "unsigned", "uint32_t" }, 420 { "unsigned long long", "uint64_t" }, 421 { "unsigned char", "uchar_t" }, 422 { "unsigned short", "ushort_t" }, 423 { "unsigned", "uint_t" }, 424 { "unsigned long", "ulong_t" }, 425 { "unsigned long long", "u_longlong_t" }, 426 { "int", "ptrdiff_t" }, 427 { "unsigned", "uintptr_t" }, 428 { "unsigned", "size_t" }, 429 { "long", "id_t" }, 430 { "long", "pid_t" }, 431 { NULL, NULL } 432 }; 433 434 /* 435 * Tables of LP64 typedefs to use to populate the dynamic "D" CTF container. 436 * These aliases ensure that D definitions can use typical <sys/types.h> names. 437 */ 438 static const dt_typedef_t _dtrace_typedefs_64[] = { 439 { "char", "int8_t" }, 440 { "short", "int16_t" }, 441 { "int", "int32_t" }, 442 { "long", "int64_t" }, 443 { "long", "intptr_t" }, 444 { "long", "ssize_t" }, 445 { "unsigned char", "uint8_t" }, 446 { "unsigned short", "uint16_t" }, 447 { "unsigned", "uint32_t" }, 448 { "unsigned long", "uint64_t" }, 449 { "unsigned char", "uchar_t" }, 450 { "unsigned short", "ushort_t" }, 451 { "unsigned", "uint_t" }, 452 { "unsigned long", "ulong_t" }, 453 { "unsigned long long", "u_longlong_t" }, 454 { "long", "ptrdiff_t" }, 455 { "unsigned long", "uintptr_t" }, 456 { "unsigned long", "size_t" }, 457 { "int", "id_t" }, 458 { "int", "pid_t" }, 459 { NULL, NULL } 460 }; 461 462 /* 463 * Tables of ILP32 integer type templates used to populate the dtp->dt_ints[] 464 * cache when a new dtrace client open occurs. Values are set by dtrace_open(). 465 */ 466 static const dt_intdesc_t _dtrace_ints_32[] = { 467 { "int", NULL, CTF_ERR, 0x7fffffffULL }, 468 { "unsigned int", NULL, CTF_ERR, 0xffffffffULL }, 469 { "long", NULL, CTF_ERR, 0x7fffffffULL }, 470 { "unsigned long", NULL, CTF_ERR, 0xffffffffULL }, 471 { "long long", NULL, CTF_ERR, 0x7fffffffffffffffULL }, 472 { "unsigned long long", NULL, CTF_ERR, 0xffffffffffffffffULL } 473 }; 474 475 /* 476 * Tables of LP64 integer type templates used to populate the dtp->dt_ints[] 477 * cache when a new dtrace client open occurs. Values are set by dtrace_open(). 478 */ 479 static const dt_intdesc_t _dtrace_ints_64[] = { 480 { "int", NULL, CTF_ERR, 0x7fffffffULL }, 481 { "unsigned int", NULL, CTF_ERR, 0xffffffffULL }, 482 { "long", NULL, CTF_ERR, 0x7fffffffffffffffULL }, 483 { "unsigned long", NULL, CTF_ERR, 0xffffffffffffffffULL }, 484 { "long long", NULL, CTF_ERR, 0x7fffffffffffffffULL }, 485 { "unsigned long long", NULL, CTF_ERR, 0xffffffffffffffffULL } 486 }; 487 488 /* 489 * Table of macro variable templates used to populate the macro identifier hash 490 * when a new dtrace client open occurs. Values are set by dtrace_update(). 491 */ 492 static const dt_ident_t _dtrace_macros[] = { 493 { "egid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 494 { "euid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 495 { "gid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 496 { "pid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 497 { "pgid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 498 { "ppid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 499 { "projid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 500 { "sid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 501 { "taskid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 502 { "target", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 503 { "uid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 504 { NULL, 0, 0, 0, { 0, 0, 0 }, 0 } 505 }; 506 507 /* 508 * Hard-wired definition string to be compiled and cached every time a new 509 * DTrace library handle is initialized. This string should only be used to 510 * contain definitions that should be present regardless of DTRACE_O_NOLIBS. 511 */ 512 static const char _dtrace_hardwire[] = "\ 513 inline long NULL = 0; \n\ 514 #pragma D binding \"1.0\" NULL\n\ 515 "; 516 517 /* 518 * Default DTrace configuration to use when opening libdtrace DTRACE_O_NODEV. 519 * If DTRACE_O_NODEV is not set, we load the configuration from the kernel. 520 * The use of CTF_MODEL_NATIVE is more subtle than it might appear: we are 521 * relying on the fact that when running dtrace(1M), isaexec will invoke the 522 * binary with the same bitness as the kernel, which is what we want by default 523 * when generating our DIF. The user can override the choice using oflags. 524 */ 525 static const dtrace_conf_t _dtrace_conf = { 526 DIF_VERSION, /* dtc_difversion */ 527 DIF_DIR_NREGS, /* dtc_difintregs */ 528 DIF_DTR_NREGS, /* dtc_diftupregs */ 529 CTF_MODEL_NATIVE /* dtc_ctfmodel */ 530 }; 531 532 const dtrace_attribute_t _dtrace_maxattr = { 533 DTRACE_STABILITY_MAX, 534 DTRACE_STABILITY_MAX, 535 DTRACE_CLASS_MAX 536 }; 537 538 const dtrace_attribute_t _dtrace_defattr = { 539 DTRACE_STABILITY_STABLE, 540 DTRACE_STABILITY_STABLE, 541 DTRACE_CLASS_COMMON 542 }; 543 544 const dtrace_attribute_t _dtrace_symattr = { 545 DTRACE_STABILITY_PRIVATE, 546 DTRACE_STABILITY_PRIVATE, 547 DTRACE_CLASS_UNKNOWN 548 }; 549 550 const dtrace_attribute_t _dtrace_typattr = { 551 DTRACE_STABILITY_PRIVATE, 552 DTRACE_STABILITY_PRIVATE, 553 DTRACE_CLASS_UNKNOWN 554 }; 555 556 const dtrace_attribute_t _dtrace_prvattr = { 557 DTRACE_STABILITY_PRIVATE, 558 DTRACE_STABILITY_PRIVATE, 559 DTRACE_CLASS_UNKNOWN 560 }; 561 562 const dtrace_pattr_t _dtrace_prvdesc = { 563 { DTRACE_STABILITY_UNSTABLE, DTRACE_STABILITY_UNSTABLE, DTRACE_CLASS_COMMON }, 564 { DTRACE_STABILITY_UNSTABLE, DTRACE_STABILITY_UNSTABLE, DTRACE_CLASS_COMMON }, 565 { DTRACE_STABILITY_UNSTABLE, DTRACE_STABILITY_UNSTABLE, DTRACE_CLASS_COMMON }, 566 { DTRACE_STABILITY_UNSTABLE, DTRACE_STABILITY_UNSTABLE, DTRACE_CLASS_COMMON }, 567 { DTRACE_STABILITY_UNSTABLE, DTRACE_STABILITY_UNSTABLE, DTRACE_CLASS_COMMON }, 568 }; 569 570 const char *_dtrace_defcpp = "/usr/ccs/lib/cpp"; /* default cpp(1) to invoke */ 571 const char *_dtrace_defld = "/usr/ccs/bin/ld"; /* default ld(1) to invoke */ 572 573 const char *_dtrace_libdir = "/usr/lib/dtrace"; /* default library directory */ 574 const char *_dtrace_moddir = "dtrace"; /* kernel module directory */ 575 576 int _dtrace_strbuckets = 211; /* default number of hash buckets (prime) */ 577 int _dtrace_intbuckets = 256; /* default number of integer buckets (Pof2) */ 578 uint_t _dtrace_strsize = 256; /* default size of string intrinsic type */ 579 uint_t _dtrace_stkindent = 14; /* default whitespace indent for stack/ustack */ 580 uint_t _dtrace_pidbuckets = 64; /* default number of pid hash buckets */ 581 uint_t _dtrace_pidlrulim = 8; /* default number of pid handles to cache */ 582 size_t _dtrace_bufsize = 512; /* default dt_buf_create() size */ 583 int _dtrace_argmax = 32; /* default maximum number of probe arguments */ 584 585 int _dtrace_debug = 0; /* debug messages enabled (off) */ 586 const char *const _dtrace_version = DT_VERS_STRING; /* API version string */ 587 int _dtrace_rdvers = RD_VERSION; /* rtld_db feature version */ 588 589 typedef struct dt_fdlist { 590 int *df_fds; /* array of provider driver file descriptors */ 591 uint_t df_ents; /* number of valid elements in df_fds[] */ 592 uint_t df_size; /* size of df_fds[] */ 593 } dt_fdlist_t; 594 595 #pragma init(_dtrace_init) 596 void 597 _dtrace_init(void) 598 { 599 _dtrace_debug = getenv("DTRACE_DEBUG") != NULL; 600 601 for (; _dtrace_rdvers > 0; _dtrace_rdvers--) { 602 if (rd_init(_dtrace_rdvers) == RD_OK) 603 break; 604 } 605 } 606 607 static dtrace_hdl_t * 608 set_open_errno(dtrace_hdl_t *dtp, int *errp, int err) 609 { 610 if (dtp != NULL) 611 dtrace_close(dtp); 612 if (errp != NULL) 613 *errp = err; 614 return (NULL); 615 } 616 617 static void 618 dt_provmod_open(dt_provmod_t **provmod, dt_fdlist_t *dfp, const char *dirname, 619 const char *subdir, const char *isadir) 620 { 621 dt_provmod_t *prov; 622 char path[PATH_MAX]; 623 struct dirent *dp, *ep; 624 DIR *dirp; 625 int fd; 626 627 if (isadir) { 628 (void) snprintf(path, sizeof (path), "%s/%s/%s", 629 dirname, subdir, isadir); 630 } else { 631 (void) snprintf(path, sizeof (path), "%s/%s", 632 dirname, subdir); 633 } 634 635 if ((dirp = opendir(path)) == NULL) 636 return; /* failed to open directory; just skip it */ 637 638 ep = alloca(sizeof (struct dirent) + PATH_MAX + 1); 639 bzero(ep, sizeof (struct dirent) + PATH_MAX + 1); 640 641 while (readdir_r(dirp, ep, &dp) == 0 && dp != NULL) { 642 if (dp->d_name[0] == '.') 643 continue; /* skip "." and ".." */ 644 645 if (dfp->df_ents == dfp->df_size) { 646 uint_t size = dfp->df_size ? dfp->df_size * 2 : 16; 647 int *fds = realloc(dfp->df_fds, size * sizeof (int)); 648 649 if (fds == NULL) 650 break; /* skip the rest of this directory */ 651 652 dfp->df_fds = fds; 653 dfp->df_size = size; 654 } 655 656 (void) snprintf(path, sizeof (path), 657 "/devices/pseudo/%s@0:%s", dp->d_name, dp->d_name); 658 659 if ((fd = open(path, O_RDONLY)) == -1) 660 continue; /* failed to open driver; just skip it */ 661 662 if (((prov = malloc(sizeof (dt_provmod_t))) == NULL) || 663 (prov->dp_name = malloc(strlen(dp->d_name) + 1)) == NULL) { 664 free(prov); 665 (void) close(fd); 666 break; 667 } 668 669 (void) strcpy(prov->dp_name, dp->d_name); 670 prov->dp_next = *provmod; 671 *provmod = prov; 672 673 dt_dprintf("opened provider %s\n", dp->d_name); 674 dfp->df_fds[dfp->df_ents++] = fd; 675 } 676 677 (void) closedir(dirp); 678 } 679 680 static void 681 dt_provmod_destroy(dt_provmod_t **provmod) 682 { 683 dt_provmod_t *next, *current; 684 685 for (current = *provmod; current != NULL; current = next) { 686 next = current->dp_next; 687 free(current->dp_name); 688 free(current); 689 } 690 691 *provmod = NULL; 692 } 693 694 static const char * 695 dt_get_sysinfo(int cmd, char *buf, size_t len) 696 { 697 ssize_t rv = sysinfo(cmd, buf, len); 698 char *p = buf; 699 700 if (rv < 0 || rv > len) 701 (void) snprintf(buf, len, "%s", "Unknown"); 702 703 while ((p = strchr(p, '.')) != NULL) 704 *p++ = '_'; 705 706 return (buf); 707 } 708 709 static dtrace_hdl_t * 710 dt_vopen(int version, int flags, int *errp, 711 const dtrace_vector_t *vector, void *arg) 712 { 713 dtrace_hdl_t *dtp = NULL; 714 int dtfd = -1, ftfd = -1, fterr = 0; 715 dtrace_prog_t *pgp; 716 dt_module_t *dmp; 717 dt_provmod_t *provmod = NULL; 718 int i, err; 719 720 const dt_intrinsic_t *dinp; 721 const dt_typedef_t *dtyp; 722 const dt_ident_t *idp; 723 724 dtrace_typeinfo_t dtt; 725 ctf_funcinfo_t ctc; 726 ctf_arinfo_t ctr; 727 728 dt_fdlist_t df = { NULL, 0, 0 }; 729 char *p, *q, *path = NULL; 730 const char *isadir = NULL; 731 int pathlen; 732 733 char isadef[32], utsdef[32]; 734 char s1[64], s2[64]; 735 736 if (version <= 0) 737 return (set_open_errno(dtp, errp, EINVAL)); 738 739 if (version > DTRACE_VERSION) 740 return (set_open_errno(dtp, errp, EDT_VERSION)); 741 742 if (flags & ~DTRACE_O_MASK) 743 return (set_open_errno(dtp, errp, EINVAL)); 744 745 if ((flags & DTRACE_O_LP64) && (flags & DTRACE_O_ILP32)) 746 return (set_open_errno(dtp, errp, EINVAL)); 747 748 if (vector == NULL && arg != NULL) 749 return (set_open_errno(dtp, errp, EINVAL)); 750 751 if (elf_version(EV_CURRENT) == EV_NONE) 752 return (set_open_errno(dtp, errp, EDT_ELFVERSION)); 753 754 if (vector != NULL || (flags & DTRACE_O_NODEV)) 755 goto alloc; /* do not attempt to open dtrace device */ 756 757 /* 758 * For each directory in the kernel's module path, build the name of 759 * the corresponding dtrace provider subdirectory and attempt to open a 760 * pseudo-driver whose name matches the name of each provider therein. 761 * We hold them open in the df.df_fds list until we open the DTrace 762 * driver itself, allowing us to see all of the probes provided on this 763 * system. Once we have the DTrace driver open, we can safely close 764 * all the providers now that they have registered with the framework. 765 */ 766 if (sysinfo(SI_ISALIST, isadef, sizeof (isadef)) > 0) { 767 if (strstr(isadef, "sparcv9") != NULL) 768 isadir = "sparcv9"; 769 else if (strstr(isadef, "amd64") != NULL) 770 isadir = "amd64"; 771 } 772 773 if (modctl(MODGETPATHLEN, NULL, &pathlen) == 0 && 774 (path = malloc(pathlen + 1)) != NULL && 775 modctl(MODGETPATH, NULL, path) == 0) { 776 for (p = path; *p != '\0'; p = q) { 777 if ((q = strchr(p, ' ')) != NULL) 778 *q++ = '\0'; 779 else 780 q = p + strlen(p); 781 dt_provmod_open(&provmod, &df, p, 782 _dtrace_moddir, isadir); 783 } 784 } 785 786 dtfd = open("/devices/pseudo/dtrace@0:dtrace", O_RDWR); 787 err = errno; /* save errno from opening dtfd */ 788 789 ftfd = open("/devices/pseudo/fasttrap@0:fasttrap", O_RDWR); 790 fterr = ftfd == -1 ? errno : 0; /* save errno from open ftfd */ 791 792 while (df.df_ents-- != 0) 793 (void) close(df.df_fds[df.df_ents]); 794 795 free(df.df_fds); 796 free(path); 797 798 /* 799 * If we failed to open the dtrace device, fail dtrace_open(). 800 * We convert some kernel errnos to custom libdtrace errnos to 801 * improve the resulting message from the usual strerror(). 802 */ 803 if (dtfd == -1) { 804 dt_provmod_destroy(&provmod); 805 switch (err) { 806 case ENOENT: 807 if (getzoneid() != GLOBAL_ZONEID) 808 err = EDT_ZNOENT; 809 else 810 err = EDT_GNOENT; 811 break; 812 case EBUSY: 813 err = EDT_BUSY; 814 break; 815 case EACCES: 816 err = EDT_ACCESS; 817 break; 818 } 819 return (set_open_errno(dtp, errp, err)); 820 } 821 822 (void) fcntl(dtfd, F_SETFD, FD_CLOEXEC); 823 (void) fcntl(ftfd, F_SETFD, FD_CLOEXEC); 824 825 alloc: 826 if ((dtp = malloc(sizeof (dtrace_hdl_t))) == NULL) 827 return (set_open_errno(dtp, errp, EDT_NOMEM)); 828 829 bzero(dtp, sizeof (dtrace_hdl_t)); 830 dtp->dt_oflags = flags; 831 dtp->dt_prcmode = DT_PROC_STOP_PREINIT; 832 dtp->dt_linkmode = DT_LINK_KERNEL; 833 dtp->dt_linktype = DT_LTYP_ELF; 834 dtp->dt_stdcmode = DT_STDC_XA; 835 dtp->dt_version = version; 836 dtp->dt_fd = dtfd; 837 dtp->dt_ftfd = ftfd; 838 dtp->dt_fterr = fterr; 839 dtp->dt_cdefs_fd = -1; 840 dtp->dt_ddefs_fd = -1; 841 dtp->dt_stdout_fd = -1; 842 dtp->dt_modbuckets = _dtrace_strbuckets; 843 dtp->dt_mods = calloc(dtp->dt_modbuckets, sizeof (dt_module_t *)); 844 dtp->dt_provbuckets = _dtrace_strbuckets; 845 dtp->dt_provs = calloc(dtp->dt_provbuckets, sizeof (dt_provider_t *)); 846 dt_proc_hash_create(dtp); 847 dtp->dt_vmax = DT_VERS_LATEST; 848 dtp->dt_cpp_path = strdup(_dtrace_defcpp); 849 dtp->dt_cpp_argv = malloc(sizeof (char *)); 850 dtp->dt_cpp_argc = 1; 851 dtp->dt_cpp_args = 1; 852 dtp->dt_ld_path = strdup(_dtrace_defld); 853 dtp->dt_provmod = provmod; 854 dtp->dt_vector = vector; 855 dtp->dt_varg = arg; 856 dt_dof_init(dtp); 857 (void) uname(&dtp->dt_uts); 858 859 if (dtp->dt_mods == NULL || dtp->dt_provs == NULL || 860 dtp->dt_procs == NULL || dtp->dt_ld_path == NULL || 861 dtp->dt_cpp_path == NULL || dtp->dt_cpp_argv == NULL) 862 return (set_open_errno(dtp, errp, EDT_NOMEM)); 863 864 for (i = 0; i < DTRACEOPT_MAX; i++) 865 dtp->dt_options[i] = DTRACEOPT_UNSET; 866 867 dtp->dt_cpp_argv[0] = (char *)strbasename(dtp->dt_cpp_path); 868 869 (void) snprintf(isadef, sizeof (isadef), "-D__SUNW_D_%u", 870 (uint_t)(sizeof (void *) * NBBY)); 871 872 (void) snprintf(utsdef, sizeof (utsdef), "-D__%s_%s", 873 dt_get_sysinfo(SI_SYSNAME, s1, sizeof (s1)), 874 dt_get_sysinfo(SI_RELEASE, s2, sizeof (s2))); 875 876 if (dt_cpp_add_arg(dtp, "-D__sun") == NULL || 877 dt_cpp_add_arg(dtp, "-D__unix") == NULL || 878 dt_cpp_add_arg(dtp, "-D__SVR4") == NULL || 879 dt_cpp_add_arg(dtp, "-D__SUNW_D=1") == NULL || 880 dt_cpp_add_arg(dtp, isadef) == NULL || 881 dt_cpp_add_arg(dtp, utsdef) == NULL) 882 return (set_open_errno(dtp, errp, EDT_NOMEM)); 883 884 if (flags & DTRACE_O_NODEV) 885 bcopy(&_dtrace_conf, &dtp->dt_conf, sizeof (_dtrace_conf)); 886 else if (dt_ioctl(dtp, DTRACEIOC_CONF, &dtp->dt_conf) != 0) 887 return (set_open_errno(dtp, errp, errno)); 888 889 if (flags & DTRACE_O_LP64) 890 dtp->dt_conf.dtc_ctfmodel = CTF_MODEL_LP64; 891 else if (flags & DTRACE_O_ILP32) 892 dtp->dt_conf.dtc_ctfmodel = CTF_MODEL_ILP32; 893 894 #ifdef __sparc 895 /* 896 * On SPARC systems, __sparc is always defined for <sys/isa_defs.h> 897 * and __sparcv9 is defined if we are doing a 64-bit compile. 898 */ 899 if (dt_cpp_add_arg(dtp, "-D__sparc") == NULL) 900 return (set_open_errno(dtp, errp, EDT_NOMEM)); 901 902 if (dtp->dt_conf.dtc_ctfmodel == CTF_MODEL_LP64 && 903 dt_cpp_add_arg(dtp, "-D__sparcv9") == NULL) 904 return (set_open_errno(dtp, errp, EDT_NOMEM)); 905 #endif 906 907 #ifdef __x86 908 /* 909 * On x86 systems, __i386 is defined for <sys/isa_defs.h> for 32-bit 910 * compiles and __amd64 is defined for 64-bit compiles. Unlike SPARC, 911 * they are defined exclusive of one another (see PSARC 2004/619). 912 */ 913 if (dtp->dt_conf.dtc_ctfmodel == CTF_MODEL_LP64) 914 p = dt_cpp_add_arg(dtp, "-D__amd64"); 915 else 916 p = dt_cpp_add_arg(dtp, "-D__i386"); 917 918 if (p == NULL) 919 return (set_open_errno(dtp, errp, EDT_NOMEM)); 920 #endif 921 922 if (dtp->dt_conf.dtc_difversion < DIF_VERSION) 923 return (set_open_errno(dtp, errp, EDT_DIFVERS)); 924 925 if (dtp->dt_conf.dtc_ctfmodel == CTF_MODEL_ILP32) 926 bcopy(_dtrace_ints_32, dtp->dt_ints, sizeof (_dtrace_ints_32)); 927 else 928 bcopy(_dtrace_ints_64, dtp->dt_ints, sizeof (_dtrace_ints_64)); 929 930 dtp->dt_macros = dt_idhash_create("macro", NULL, 0, UINT_MAX); 931 dtp->dt_aggs = dt_idhash_create("aggregation", NULL, 0, UINT_MAX); 932 933 dtp->dt_globals = dt_idhash_create("global", _dtrace_globals, 934 DIF_VAR_OTHER_UBASE, DIF_VAR_OTHER_MAX); 935 936 dtp->dt_tls = dt_idhash_create("thread local", NULL, 937 DIF_VAR_OTHER_UBASE, DIF_VAR_OTHER_MAX); 938 939 if (dtp->dt_macros == NULL || dtp->dt_aggs == NULL || 940 dtp->dt_globals == NULL || dtp->dt_tls == NULL) 941 return (set_open_errno(dtp, errp, EDT_NOMEM)); 942 943 /* 944 * Populate the dt_macros identifier hash table by hand: we can't use 945 * the dt_idhash_populate() mechanism because we're not yet compiling 946 * and dtrace_update() needs to immediately reference these idents. 947 */ 948 for (idp = _dtrace_macros; idp->di_name != NULL; idp++) { 949 if (dt_idhash_insert(dtp->dt_macros, idp->di_name, 950 idp->di_kind, idp->di_flags, idp->di_id, idp->di_attr, 951 idp->di_vers, idp->di_ops ? idp->di_ops : &dt_idops_thaw, 952 idp->di_iarg, 0) == NULL) 953 return (set_open_errno(dtp, errp, EDT_NOMEM)); 954 } 955 956 /* 957 * Update the module list using /system/object and load the values for 958 * the macro variable definitions according to the current process. 959 */ 960 dtrace_update(dtp); 961 962 /* 963 * Select the intrinsics and typedefs we want based on the data model. 964 * The intrinsics are under "C". The typedefs are added under "D". 965 */ 966 if (dtp->dt_conf.dtc_ctfmodel == CTF_MODEL_ILP32) { 967 dinp = _dtrace_intrinsics_32; 968 dtyp = _dtrace_typedefs_32; 969 } else { 970 dinp = _dtrace_intrinsics_64; 971 dtyp = _dtrace_typedefs_64; 972 } 973 974 /* 975 * Create a dynamic CTF container under the "C" scope for intrinsic 976 * types and types defined in ANSI-C header files that are included. 977 */ 978 if ((dmp = dtp->dt_cdefs = dt_module_create(dtp, "C")) == NULL) 979 return (set_open_errno(dtp, errp, EDT_NOMEM)); 980 981 if ((dmp->dm_ctfp = ctf_create(&dtp->dt_ctferr)) == NULL) 982 return (set_open_errno(dtp, errp, EDT_CTF)); 983 984 dt_dprintf("created CTF container for %s (%p)\n", 985 dmp->dm_name, (void *)dmp->dm_ctfp); 986 987 (void) ctf_setmodel(dmp->dm_ctfp, dtp->dt_conf.dtc_ctfmodel); 988 ctf_setspecific(dmp->dm_ctfp, dmp); 989 990 dmp->dm_flags = DT_DM_LOADED; /* fake up loaded bit */ 991 dmp->dm_modid = -1; /* no module ID */ 992 993 /* 994 * Fill the dynamic "C" CTF container with all of the intrinsic 995 * integer and floating-point types appropriate for this data model. 996 */ 997 for (; dinp->din_name != NULL; dinp++) { 998 if (dinp->din_kind == CTF_K_INTEGER) { 999 err = ctf_add_integer(dmp->dm_ctfp, CTF_ADD_ROOT, 1000 dinp->din_name, &dinp->din_data); 1001 } else { 1002 err = ctf_add_float(dmp->dm_ctfp, CTF_ADD_ROOT, 1003 dinp->din_name, &dinp->din_data); 1004 } 1005 1006 if (err == CTF_ERR) { 1007 dt_dprintf("failed to add %s to C container: %s\n", 1008 dinp->din_name, ctf_errmsg( 1009 ctf_errno(dmp->dm_ctfp))); 1010 return (set_open_errno(dtp, errp, EDT_CTF)); 1011 } 1012 } 1013 1014 if (ctf_update(dmp->dm_ctfp) != 0) { 1015 dt_dprintf("failed to update C container: %s\n", 1016 ctf_errmsg(ctf_errno(dmp->dm_ctfp))); 1017 return (set_open_errno(dtp, errp, EDT_CTF)); 1018 } 1019 1020 /* 1021 * Add intrinsic pointer types that are needed to initialize printf 1022 * format dictionary types (see table in dt_printf.c). 1023 */ 1024 (void) ctf_add_pointer(dmp->dm_ctfp, CTF_ADD_ROOT, 1025 ctf_lookup_by_name(dmp->dm_ctfp, "void")); 1026 1027 (void) ctf_add_pointer(dmp->dm_ctfp, CTF_ADD_ROOT, 1028 ctf_lookup_by_name(dmp->dm_ctfp, "char")); 1029 1030 (void) ctf_add_pointer(dmp->dm_ctfp, CTF_ADD_ROOT, 1031 ctf_lookup_by_name(dmp->dm_ctfp, "int")); 1032 1033 if (ctf_update(dmp->dm_ctfp) != 0) { 1034 dt_dprintf("failed to update C container: %s\n", 1035 ctf_errmsg(ctf_errno(dmp->dm_ctfp))); 1036 return (set_open_errno(dtp, errp, EDT_CTF)); 1037 } 1038 1039 /* 1040 * Create a dynamic CTF container under the "D" scope for types that 1041 * are defined by the D program itself or on-the-fly by the D compiler. 1042 * The "D" CTF container is a child of the "C" CTF container. 1043 */ 1044 if ((dmp = dtp->dt_ddefs = dt_module_create(dtp, "D")) == NULL) 1045 return (set_open_errno(dtp, errp, EDT_NOMEM)); 1046 1047 if ((dmp->dm_ctfp = ctf_create(&dtp->dt_ctferr)) == NULL) 1048 return (set_open_errno(dtp, errp, EDT_CTF)); 1049 1050 dt_dprintf("created CTF container for %s (%p)\n", 1051 dmp->dm_name, (void *)dmp->dm_ctfp); 1052 1053 (void) ctf_setmodel(dmp->dm_ctfp, dtp->dt_conf.dtc_ctfmodel); 1054 ctf_setspecific(dmp->dm_ctfp, dmp); 1055 1056 dmp->dm_flags = DT_DM_LOADED; /* fake up loaded bit */ 1057 dmp->dm_modid = -1; /* no module ID */ 1058 1059 if (ctf_import(dmp->dm_ctfp, dtp->dt_cdefs->dm_ctfp) == CTF_ERR) { 1060 dt_dprintf("failed to import D parent container: %s\n", 1061 ctf_errmsg(ctf_errno(dmp->dm_ctfp))); 1062 return (set_open_errno(dtp, errp, EDT_CTF)); 1063 } 1064 1065 /* 1066 * Fill the dynamic "D" CTF container with all of the built-in typedefs 1067 * that we need to use for our D variable and function definitions. 1068 * This ensures that basic inttypes.h names are always available to us. 1069 */ 1070 for (; dtyp->dty_src != NULL; dtyp++) { 1071 if (ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT, 1072 dtyp->dty_dst, ctf_lookup_by_name(dmp->dm_ctfp, 1073 dtyp->dty_src)) == CTF_ERR) { 1074 dt_dprintf("failed to add typedef %s %s to D " 1075 "container: %s", dtyp->dty_src, dtyp->dty_dst, 1076 ctf_errmsg(ctf_errno(dmp->dm_ctfp))); 1077 return (set_open_errno(dtp, errp, EDT_CTF)); 1078 } 1079 } 1080 1081 /* 1082 * Insert a CTF ID corresponding to a pointer to a type of kind 1083 * CTF_K_FUNCTION we can use in the compiler for function pointers. 1084 * CTF treats all function pointers as "int (*)()" so we only need one. 1085 */ 1086 ctc.ctc_return = ctf_lookup_by_name(dmp->dm_ctfp, "int"); 1087 ctc.ctc_argc = 0; 1088 ctc.ctc_flags = 0; 1089 1090 dtp->dt_type_func = ctf_add_function(dmp->dm_ctfp, 1091 CTF_ADD_ROOT, &ctc, NULL); 1092 1093 dtp->dt_type_fptr = ctf_add_pointer(dmp->dm_ctfp, 1094 CTF_ADD_ROOT, dtp->dt_type_func); 1095 1096 /* 1097 * We also insert CTF definitions for the special D intrinsic types 1098 * string and <DYN> into the D container. The string type is added 1099 * as a typedef of char[n]. The <DYN> type is an alias for void. 1100 * We compare types to these special CTF ids throughout the compiler. 1101 */ 1102 ctr.ctr_contents = ctf_lookup_by_name(dmp->dm_ctfp, "char"); 1103 ctr.ctr_index = ctf_lookup_by_name(dmp->dm_ctfp, "long"); 1104 ctr.ctr_nelems = _dtrace_strsize; 1105 1106 dtp->dt_type_str = ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT, 1107 "string", ctf_add_array(dmp->dm_ctfp, CTF_ADD_ROOT, &ctr)); 1108 1109 dtp->dt_type_dyn = ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT, 1110 "<DYN>", ctf_lookup_by_name(dmp->dm_ctfp, "void")); 1111 1112 dtp->dt_type_stack = ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT, 1113 "stack", ctf_lookup_by_name(dmp->dm_ctfp, "void")); 1114 1115 if (dtp->dt_type_func == CTF_ERR || dtp->dt_type_fptr == CTF_ERR || 1116 dtp->dt_type_str == CTF_ERR || dtp->dt_type_dyn == CTF_ERR || 1117 dtp->dt_type_stack == CTF_ERR) { 1118 dt_dprintf("failed to add intrinsic to D container: %s\n", 1119 ctf_errmsg(ctf_errno(dmp->dm_ctfp))); 1120 return (set_open_errno(dtp, errp, EDT_CTF)); 1121 } 1122 1123 if (ctf_update(dmp->dm_ctfp) != 0) { 1124 dt_dprintf("failed update D container: %s\n", 1125 ctf_errmsg(ctf_errno(dmp->dm_ctfp))); 1126 return (set_open_errno(dtp, errp, EDT_CTF)); 1127 } 1128 1129 /* 1130 * Initialize the integer description table used to convert integer 1131 * constants to the appropriate types. Refer to the comments above 1132 * dt_node_int() for a complete description of how this table is used. 1133 */ 1134 for (i = 0; i < sizeof (dtp->dt_ints) / sizeof (dtp->dt_ints[0]); i++) { 1135 if (dtrace_lookup_by_type(dtp, DTRACE_OBJ_EVERY, 1136 dtp->dt_ints[i].did_name, &dtt) != 0) { 1137 dt_dprintf("failed to lookup integer type %s: %s\n", 1138 dtp->dt_ints[i].did_name, 1139 dtrace_errmsg(dtp, dtrace_errno(dtp))); 1140 return (set_open_errno(dtp, errp, dtp->dt_errno)); 1141 } 1142 dtp->dt_ints[i].did_ctfp = dtt.dtt_ctfp; 1143 dtp->dt_ints[i].did_type = dtt.dtt_type; 1144 } 1145 1146 /* 1147 * Now that we've created the "C" and "D" containers, move them to the 1148 * start of the module list so that these types and symbols are found 1149 * first (for stability) when iterating through the module list. 1150 */ 1151 dt_list_delete(&dtp->dt_modlist, dtp->dt_ddefs); 1152 dt_list_prepend(&dtp->dt_modlist, dtp->dt_ddefs); 1153 1154 dt_list_delete(&dtp->dt_modlist, dtp->dt_cdefs); 1155 dt_list_prepend(&dtp->dt_modlist, dtp->dt_cdefs); 1156 1157 if (dt_pfdict_create(dtp) == -1) 1158 return (set_open_errno(dtp, errp, dtp->dt_errno)); 1159 1160 /* 1161 * If we are opening libdtrace DTRACE_O_NODEV enable C_ZDEFS by default 1162 * because without /dev/dtrace open, we will not be able to load the 1163 * names and attributes of any providers or probes from the kernel. 1164 */ 1165 if (flags & DTRACE_O_NODEV) 1166 dtp->dt_cflags |= DTRACE_C_ZDEFS; 1167 1168 /* 1169 * Load hard-wired inlines into the definition cache by calling the 1170 * compiler on the raw definition string defined above. 1171 */ 1172 if ((pgp = dtrace_program_strcompile(dtp, _dtrace_hardwire, 1173 DTRACE_PROBESPEC_NONE, DTRACE_C_EMPTY, 0, NULL)) == NULL) { 1174 dt_dprintf("failed to load hard-wired definitions: %s\n", 1175 dtrace_errmsg(dtp, dtrace_errno(dtp))); 1176 return (set_open_errno(dtp, errp, EDT_HARDWIRE)); 1177 } 1178 1179 dtrace_program_destroy(dtp, pgp); 1180 1181 /* 1182 * Set up the default DTrace library path. Once set, the next call to 1183 * dt_compile() will compile all the libraries. We intentionally defer 1184 * library processing to improve overhead for clients that don't ever 1185 * compile, and to provide better error reporting (because the full 1186 * reporting of compiler errors requires dtrace_open() to succeed). 1187 */ 1188 if (dtrace_setopt(dtp, "libdir", _dtrace_libdir) != 0) 1189 return (set_open_errno(dtp, errp, dtp->dt_errno)); 1190 1191 return (dtp); 1192 } 1193 1194 dtrace_hdl_t * 1195 dtrace_open(int version, int flags, int *errp) 1196 { 1197 return (dt_vopen(version, flags, errp, NULL, NULL)); 1198 } 1199 1200 dtrace_hdl_t * 1201 dtrace_vopen(int version, int flags, int *errp, 1202 const dtrace_vector_t *vector, void *arg) 1203 { 1204 return (dt_vopen(version, flags, errp, vector, arg)); 1205 } 1206 1207 void 1208 dtrace_close(dtrace_hdl_t *dtp) 1209 { 1210 dt_ident_t *idp, *ndp; 1211 dt_module_t *dmp; 1212 dt_provider_t *pvp; 1213 dtrace_prog_t *pgp; 1214 dt_xlator_t *dxp; 1215 dt_dirpath_t *dirp; 1216 int i; 1217 1218 while ((pgp = dt_list_next(&dtp->dt_programs)) != NULL) 1219 dtrace_program_destroy(dtp, pgp); 1220 1221 while ((dxp = dt_list_next(&dtp->dt_xlators)) != NULL) 1222 dt_xlator_destroy(dtp, dxp); 1223 1224 for (idp = dtp->dt_externs; idp != NULL; idp = ndp) { 1225 ndp = idp->di_next; 1226 dt_ident_destroy(idp); 1227 } 1228 1229 if (dtp->dt_macros != NULL) 1230 dt_idhash_destroy(dtp->dt_macros); 1231 if (dtp->dt_aggs != NULL) 1232 dt_idhash_destroy(dtp->dt_aggs); 1233 if (dtp->dt_globals != NULL) 1234 dt_idhash_destroy(dtp->dt_globals); 1235 if (dtp->dt_tls != NULL) 1236 dt_idhash_destroy(dtp->dt_tls); 1237 1238 while ((dmp = dt_list_next(&dtp->dt_modlist)) != NULL) 1239 dt_module_destroy(dtp, dmp); 1240 1241 while ((pvp = dt_list_next(&dtp->dt_provlist)) != NULL) 1242 dt_provider_destroy(dtp, pvp); 1243 1244 if (dtp->dt_procs != NULL) 1245 dt_proc_hash_destroy(dtp); 1246 1247 if (dtp->dt_fd != -1) 1248 (void) close(dtp->dt_fd); 1249 if (dtp->dt_ftfd != -1) 1250 (void) close(dtp->dt_ftfd); 1251 if (dtp->dt_cdefs_fd != -1) 1252 (void) close(dtp->dt_cdefs_fd); 1253 if (dtp->dt_ddefs_fd != -1) 1254 (void) close(dtp->dt_ddefs_fd); 1255 if (dtp->dt_stdout_fd != -1) 1256 (void) close(dtp->dt_stdout_fd); 1257 1258 dt_epid_destroy(dtp); 1259 dt_aggid_destroy(dtp); 1260 dt_format_destroy(dtp); 1261 dt_buffered_destroy(dtp); 1262 dt_aggregate_destroy(dtp); 1263 free(dtp->dt_buf.dtbd_data); 1264 dt_pfdict_destroy(dtp); 1265 dt_provmod_destroy(&dtp->dt_provmod); 1266 dt_dof_fini(dtp); 1267 1268 for (i = 1; i < dtp->dt_cpp_argc; i++) 1269 free(dtp->dt_cpp_argv[i]); 1270 1271 while ((dirp = dt_list_next(&dtp->dt_lib_path)) != NULL) { 1272 dt_list_delete(&dtp->dt_lib_path, dirp); 1273 free(dirp->dir_path); 1274 free(dirp); 1275 } 1276 1277 free(dtp->dt_cpp_argv); 1278 free(dtp->dt_cpp_path); 1279 free(dtp->dt_ld_path); 1280 1281 free(dtp->dt_mods); 1282 free(dtp->dt_provs); 1283 free(dtp); 1284 } 1285 1286 int 1287 dtrace_go(dtrace_hdl_t *dtp) 1288 { 1289 void *dof; 1290 int err; 1291 1292 if (dtp->dt_active) 1293 return (dt_set_errno(dtp, EINVAL)); 1294 1295 /* 1296 * If a dtrace:::ERROR program and callback are registered, enable the 1297 * program before we start tracing. If this fails for a vector open 1298 * with ENOTTY, we permit dtrace_go() to succeed so that vector clients 1299 * such as mdb's dtrace module can execute the rest of dtrace_go() even 1300 * though they do not provide support for the DTRACEIOC_ENABLE ioctl. 1301 */ 1302 if (dtp->dt_errprog != NULL && 1303 dtrace_program_exec(dtp, dtp->dt_errprog, NULL) == -1 && ( 1304 dtp->dt_errno != ENOTTY || dtp->dt_vector == NULL)) 1305 return (-1); /* dt_errno has been set for us */ 1306 1307 if ((dof = dtrace_getopt_dof(dtp)) == NULL) 1308 return (-1); /* dt_errno has been set for us */ 1309 1310 err = dt_ioctl(dtp, DTRACEIOC_ENABLE, dof); 1311 dtrace_dof_destroy(dtp, dof); 1312 1313 if (err == -1 && (errno != ENOTTY || dtp->dt_vector == NULL)) 1314 return (dt_set_errno(dtp, errno)); 1315 1316 if (dt_ioctl(dtp, DTRACEIOC_GO, &dtp->dt_beganon) == -1) { 1317 if (errno == EACCES) 1318 return (dt_set_errno(dtp, EDT_DESTRUCTIVE)); 1319 1320 if (errno == EALREADY) 1321 return (dt_set_errno(dtp, EDT_ISANON)); 1322 1323 if (errno == ENOENT) 1324 return (dt_set_errno(dtp, EDT_NOANON)); 1325 1326 if (errno == E2BIG) 1327 return (dt_set_errno(dtp, EDT_ENDTOOBIG)); 1328 1329 if (errno == ENOSPC) 1330 return (dt_set_errno(dtp, EDT_BUFTOOSMALL)); 1331 1332 return (dt_set_errno(dtp, errno)); 1333 } 1334 1335 dtp->dt_active = 1; 1336 1337 if (dt_options_load(dtp) == -1) 1338 return (dt_set_errno(dtp, errno)); 1339 1340 return (dt_aggregate_go(dtp)); 1341 } 1342 1343 int 1344 dtrace_stop(dtrace_hdl_t *dtp) 1345 { 1346 if (dtp->dt_stopped) 1347 return (0); 1348 1349 if (dt_ioctl(dtp, DTRACEIOC_STOP, &dtp->dt_endedon) == -1) 1350 return (dt_set_errno(dtp, errno)); 1351 1352 dtp->dt_stopped = 1; 1353 1354 return (0); 1355 } 1356 1357 int 1358 dtrace_provider_modules(dtrace_hdl_t *dtp, const char **mods, int nmods) 1359 { 1360 dt_provmod_t *prov; 1361 int i = 0; 1362 1363 for (prov = dtp->dt_provmod; prov != NULL; prov = prov->dp_next, i++) { 1364 if (i < nmods) 1365 mods[i] = prov->dp_name; 1366 } 1367 1368 return (i); 1369 } 1370 1371 int 1372 dtrace_ctlfd(dtrace_hdl_t *dtp) 1373 { 1374 return (dtp->dt_fd); 1375 } 1376