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_program.h> 51 #include <dt_module.h> 52 #include <dt_printf.h> 53 #include <dt_string.h> 54 #include <dt_provider.h> 55 56 /* 57 * Stability and versioning definitions. These #defines are used in the tables 58 * of identifiers below to fill in the attribute and version fields associated 59 * with each identifier. The DT_ATTR_* macros are a convenience to permit more 60 * concise declarations of common attributes such as Stable/Stable/Common. The 61 * DT_VERS_* macros declare the encoded integer values of all versions used so 62 * far. DT_VERS_LATEST must correspond to the latest version value among all 63 * versions exported by the D compiler. DT_VERS_STRING must be an ASCII string 64 * that contains DT_VERS_LATEST within it along with any suffixes (e.g. Beta). 65 * You must update DT_VERS_LATEST and DT_VERS_STRING when adding a new version, 66 * and then add the new version to the _dtrace_versions[] array declared below. 67 * Refer to the Solaris Dynamic Tracing Guide Stability and Versioning chapters 68 * respectively for an explanation of these DTrace features and their values. 69 * 70 * NOTE: Although the DTrace versioning scheme supports the labeling and 71 * introduction of incompatible changes (e.g. dropping an interface in a 72 * major release), the libdtrace code does not currently support this. 73 * All versions are assumed to strictly inherit from one another. If 74 * we ever need to provide divergent interfaces, this will need work. 75 */ 76 #define DT_ATTR_STABCMN { DTRACE_STABILITY_STABLE, \ 77 DTRACE_STABILITY_STABLE, DTRACE_CLASS_COMMON } 78 79 #define DT_ATTR_EVOLCMN { DTRACE_STABILITY_EVOLVING, \ 80 DTRACE_STABILITY_EVOLVING, DTRACE_CLASS_COMMON \ 81 } 82 83 #define DT_VERS_1_0 DT_VERSION_NUMBER(1, 0, 0) 84 #define DT_VERS_1_1 DT_VERSION_NUMBER(1, 1, 0) 85 #define DT_VERS_1_2 DT_VERSION_NUMBER(1, 2, 0) 86 #define DT_VERS_LATEST DT_VERS_1_2 87 #define DT_VERS_STRING "Sun D 1.2" 88 89 const dt_version_t _dtrace_versions[] = { 90 DT_VERS_1_0, /* D API 1.0.0 (PSARC 2001/466) Solaris 10 FCS */ 91 DT_VERS_1_1, /* D API 1.1.0 Solaris Express 6/05 */ 92 DT_VERS_1_2, /* D API 1.2.0 Solaris 10 Update 1 */ 93 0 94 }; 95 96 /* 97 * Table of global identifiers. This is used to populate the global identifier 98 * hash when a new dtrace client open occurs. For more info see dt_ident.h. 99 * The global identifiers that represent functions use the dt_idops_func ops 100 * and specify the private data pointer as a prototype string which is parsed 101 * when the identifier is first encountered. These prototypes look like ANSI 102 * C function prototypes except that the special symbol "@" can be used as a 103 * wildcard to represent a single parameter of any type (i.e. any dt_node_t). 104 * The standard "..." notation can also be used to represent varargs. An empty 105 * parameter list is taken to mean void (that is, no arguments are permitted). 106 * A parameter enclosed in square brackets (e.g. "[int]") denotes an optional 107 * argument. 108 */ 109 static const dt_ident_t _dtrace_globals[] = { 110 { "alloca", DT_IDENT_FUNC, 0, DIF_SUBR_ALLOCA, DT_ATTR_STABCMN, DT_VERS_1_0, 111 &dt_idops_func, "void *(size_t)" }, 112 { "arg0", DT_IDENT_SCALAR, 0, DIF_VAR_ARG0, DT_ATTR_STABCMN, DT_VERS_1_0, 113 &dt_idops_type, "int64_t" }, 114 { "arg1", DT_IDENT_SCALAR, 0, DIF_VAR_ARG1, DT_ATTR_STABCMN, DT_VERS_1_0, 115 &dt_idops_type, "int64_t" }, 116 { "arg2", DT_IDENT_SCALAR, 0, DIF_VAR_ARG2, DT_ATTR_STABCMN, DT_VERS_1_0, 117 &dt_idops_type, "int64_t" }, 118 { "arg3", DT_IDENT_SCALAR, 0, DIF_VAR_ARG3, DT_ATTR_STABCMN, DT_VERS_1_0, 119 &dt_idops_type, "int64_t" }, 120 { "arg4", DT_IDENT_SCALAR, 0, DIF_VAR_ARG4, DT_ATTR_STABCMN, DT_VERS_1_0, 121 &dt_idops_type, "int64_t" }, 122 { "arg5", DT_IDENT_SCALAR, 0, DIF_VAR_ARG5, DT_ATTR_STABCMN, DT_VERS_1_0, 123 &dt_idops_type, "int64_t" }, 124 { "arg6", DT_IDENT_SCALAR, 0, DIF_VAR_ARG6, DT_ATTR_STABCMN, DT_VERS_1_0, 125 &dt_idops_type, "int64_t" }, 126 { "arg7", DT_IDENT_SCALAR, 0, DIF_VAR_ARG7, DT_ATTR_STABCMN, DT_VERS_1_0, 127 &dt_idops_type, "int64_t" }, 128 { "arg8", DT_IDENT_SCALAR, 0, DIF_VAR_ARG8, DT_ATTR_STABCMN, DT_VERS_1_0, 129 &dt_idops_type, "int64_t" }, 130 { "arg9", DT_IDENT_SCALAR, 0, DIF_VAR_ARG9, DT_ATTR_STABCMN, DT_VERS_1_0, 131 &dt_idops_type, "int64_t" }, 132 { "args", DT_IDENT_ARRAY, 0, DIF_VAR_ARGS, DT_ATTR_STABCMN, DT_VERS_1_0, 133 &dt_idops_args, NULL }, 134 { "avg", DT_IDENT_AGGFUNC, 0, DTRACEAGG_AVG, DT_ATTR_STABCMN, DT_VERS_1_0, 135 &dt_idops_func, "void(@)" }, 136 { "basename", DT_IDENT_FUNC, 0, DIF_SUBR_BASENAME, DT_ATTR_STABCMN, DT_VERS_1_0, 137 &dt_idops_func, "string(const char *)" }, 138 { "bcopy", DT_IDENT_FUNC, 0, DIF_SUBR_BCOPY, DT_ATTR_STABCMN, DT_VERS_1_0, 139 &dt_idops_func, "void(void *, void *, size_t)" }, 140 { "breakpoint", DT_IDENT_ACTFUNC, 0, DT_ACT_BREAKPOINT, 141 DT_ATTR_STABCMN, DT_VERS_1_0, 142 &dt_idops_func, "void()" }, 143 { "caller", DT_IDENT_SCALAR, 0, DIF_VAR_CALLER, DT_ATTR_STABCMN, DT_VERS_1_0, 144 &dt_idops_type, "uintptr_t" }, 145 { "chill", DT_IDENT_ACTFUNC, 0, DT_ACT_CHILL, DT_ATTR_STABCMN, DT_VERS_1_0, 146 &dt_idops_func, "void(int)" }, 147 { "cleanpath", DT_IDENT_FUNC, 0, DIF_SUBR_CLEANPATH, DT_ATTR_STABCMN, 148 DT_VERS_1_0, &dt_idops_func, "string(const char *)" }, 149 { "clear", DT_IDENT_ACTFUNC, 0, DT_ACT_CLEAR, DT_ATTR_STABCMN, DT_VERS_1_0, 150 &dt_idops_func, "void(...)" }, 151 { "commit", DT_IDENT_ACTFUNC, 0, DT_ACT_COMMIT, DT_ATTR_STABCMN, DT_VERS_1_0, 152 &dt_idops_func, "void(int)" }, 153 { "copyin", DT_IDENT_FUNC, 0, DIF_SUBR_COPYIN, DT_ATTR_STABCMN, DT_VERS_1_0, 154 &dt_idops_func, "void *(uintptr_t, size_t)" }, 155 { "copyinstr", DT_IDENT_FUNC, 0, DIF_SUBR_COPYINSTR, 156 DT_ATTR_STABCMN, DT_VERS_1_0, 157 &dt_idops_func, "string(uintptr_t, [size_t])" }, 158 { "copyinto", DT_IDENT_FUNC, 0, DIF_SUBR_COPYINTO, DT_ATTR_STABCMN, 159 DT_VERS_1_0, &dt_idops_func, "void(uintptr_t, size_t, void *)" }, 160 { "copyout", DT_IDENT_FUNC, 0, DIF_SUBR_COPYOUT, DT_ATTR_STABCMN, DT_VERS_1_0, 161 &dt_idops_func, "void(void *, uintptr_t, size_t)" }, 162 { "copyoutstr", DT_IDENT_FUNC, 0, DIF_SUBR_COPYOUTSTR, 163 DT_ATTR_STABCMN, DT_VERS_1_0, 164 &dt_idops_func, "void(char *, uintptr_t, size_t)" }, 165 { "count", DT_IDENT_AGGFUNC, 0, DTRACEAGG_COUNT, DT_ATTR_STABCMN, DT_VERS_1_0, 166 &dt_idops_func, "void()" }, 167 { "curthread", DT_IDENT_SCALAR, 0, DIF_VAR_CURTHREAD, 168 { DTRACE_STABILITY_STABLE, DTRACE_STABILITY_PRIVATE, 169 DTRACE_CLASS_COMMON }, DT_VERS_1_0, 170 &dt_idops_type, "genunix`kthread_t *" }, 171 { "ddi_pathname", DT_IDENT_FUNC, 0, DIF_SUBR_DDI_PATHNAME, 172 DT_ATTR_EVOLCMN, DT_VERS_1_0, 173 &dt_idops_func, "string(void *, int64_t)" }, 174 { "denormalize", DT_IDENT_ACTFUNC, 0, DT_ACT_DENORMALIZE, DT_ATTR_STABCMN, 175 DT_VERS_1_0, &dt_idops_func, "void(...)" }, 176 { "dirname", DT_IDENT_FUNC, 0, DIF_SUBR_DIRNAME, DT_ATTR_STABCMN, DT_VERS_1_0, 177 &dt_idops_func, "string(const char *)" }, 178 { "discard", DT_IDENT_ACTFUNC, 0, DT_ACT_DISCARD, DT_ATTR_STABCMN, DT_VERS_1_0, 179 &dt_idops_func, "void(int)" }, 180 { "epid", DT_IDENT_SCALAR, 0, DIF_VAR_EPID, DT_ATTR_STABCMN, DT_VERS_1_0, 181 &dt_idops_type, "uint_t" }, 182 { "execname", DT_IDENT_SCALAR, 0, DIF_VAR_EXECNAME, 183 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" }, 184 { "exit", DT_IDENT_ACTFUNC, 0, DT_ACT_EXIT, DT_ATTR_STABCMN, DT_VERS_1_0, 185 &dt_idops_func, "void(int)" }, 186 { "freopen", DT_IDENT_ACTFUNC, 0, DT_ACT_FREOPEN, DT_ATTR_STABCMN, 187 DT_VERS_1_1, &dt_idops_func, "void(@, ...)" }, 188 { "ftruncate", DT_IDENT_ACTFUNC, 0, DT_ACT_FTRUNCATE, DT_ATTR_STABCMN, 189 DT_VERS_1_0, &dt_idops_func, "void()" }, 190 { "getmajor", DT_IDENT_FUNC, 0, DIF_SUBR_GETMAJOR, 191 DT_ATTR_EVOLCMN, DT_VERS_1_0, 192 &dt_idops_func, "genunix`major_t(genunix`dev_t)" }, 193 { "getminor", DT_IDENT_FUNC, 0, DIF_SUBR_GETMINOR, 194 DT_ATTR_EVOLCMN, DT_VERS_1_0, 195 &dt_idops_func, "genunix`minor_t(genunix`dev_t)" }, 196 { "id", DT_IDENT_SCALAR, 0, DIF_VAR_ID, DT_ATTR_STABCMN, DT_VERS_1_0, 197 &dt_idops_type, "uint_t" }, 198 { "index", DT_IDENT_FUNC, 0, DIF_SUBR_INDEX, DT_ATTR_STABCMN, DT_VERS_1_1, 199 &dt_idops_func, "int(const char *, const char *, [int])" }, 200 { "ipl", DT_IDENT_SCALAR, 0, DIF_VAR_IPL, DT_ATTR_STABCMN, DT_VERS_1_0, 201 &dt_idops_type, "uint_t" }, 202 { "jstack", DT_IDENT_ACTFUNC, 0, DT_ACT_JSTACK, DT_ATTR_STABCMN, DT_VERS_1_0, 203 &dt_idops_func, "stack(...)" }, 204 { "lltostr", DT_IDENT_FUNC, 0, DIF_SUBR_LLTOSTR, DT_ATTR_STABCMN, DT_VERS_1_0, 205 &dt_idops_func, "string(int64_t)" }, 206 { "lquantize", DT_IDENT_AGGFUNC, 0, DTRACEAGG_LQUANTIZE, 207 DT_ATTR_STABCMN, DT_VERS_1_0, 208 &dt_idops_func, "void(@, int32_t, int32_t, ...)" }, 209 { "max", DT_IDENT_AGGFUNC, 0, DTRACEAGG_MAX, DT_ATTR_STABCMN, DT_VERS_1_0, 210 &dt_idops_func, "void(@)" }, 211 { "min", DT_IDENT_AGGFUNC, 0, DTRACEAGG_MIN, DT_ATTR_STABCMN, DT_VERS_1_0, 212 &dt_idops_func, "void(@)" }, 213 { "msgdsize", DT_IDENT_FUNC, 0, DIF_SUBR_MSGDSIZE, 214 DT_ATTR_STABCMN, DT_VERS_1_0, 215 &dt_idops_func, "size_t(mblk_t *)" }, 216 { "msgsize", DT_IDENT_FUNC, 0, DIF_SUBR_MSGSIZE, 217 DT_ATTR_STABCMN, DT_VERS_1_0, 218 &dt_idops_func, "size_t(mblk_t *)" }, 219 { "mutex_owned", DT_IDENT_FUNC, 0, DIF_SUBR_MUTEX_OWNED, 220 DT_ATTR_EVOLCMN, DT_VERS_1_0, 221 &dt_idops_func, "int(genunix`kmutex_t *)" }, 222 { "mutex_owner", DT_IDENT_FUNC, 0, DIF_SUBR_MUTEX_OWNER, 223 DT_ATTR_EVOLCMN, DT_VERS_1_0, 224 &dt_idops_func, "genunix`kthread_t *(genunix`kmutex_t *)" }, 225 { "mutex_type_adaptive", DT_IDENT_FUNC, 0, DIF_SUBR_MUTEX_TYPE_ADAPTIVE, 226 DT_ATTR_EVOLCMN, DT_VERS_1_0, 227 &dt_idops_func, "int(genunix`kmutex_t *)" }, 228 { "mutex_type_spin", DT_IDENT_FUNC, 0, DIF_SUBR_MUTEX_TYPE_SPIN, 229 DT_ATTR_EVOLCMN, DT_VERS_1_0, 230 &dt_idops_func, "int(genunix`kmutex_t *)" }, 231 { "normalize", DT_IDENT_ACTFUNC, 0, DT_ACT_NORMALIZE, DT_ATTR_STABCMN, 232 DT_VERS_1_0, &dt_idops_func, "void(...)" }, 233 { "panic", DT_IDENT_ACTFUNC, 0, DT_ACT_PANIC, DT_ATTR_STABCMN, DT_VERS_1_0, 234 &dt_idops_func, "void()" }, 235 { "pid", DT_IDENT_SCALAR, 0, DIF_VAR_PID, DT_ATTR_STABCMN, DT_VERS_1_0, 236 &dt_idops_type, "pid_t" }, 237 { "printa", DT_IDENT_ACTFUNC, 0, DT_ACT_PRINTA, DT_ATTR_STABCMN, DT_VERS_1_0, 238 &dt_idops_func, "void(@, ...)" }, 239 { "printf", DT_IDENT_ACTFUNC, 0, DT_ACT_PRINTF, DT_ATTR_STABCMN, DT_VERS_1_0, 240 &dt_idops_func, "void(@, ...)" }, 241 { "probefunc", DT_IDENT_SCALAR, 0, DIF_VAR_PROBEFUNC, 242 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" }, 243 { "probemod", DT_IDENT_SCALAR, 0, DIF_VAR_PROBEMOD, 244 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" }, 245 { "probename", DT_IDENT_SCALAR, 0, DIF_VAR_PROBENAME, 246 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" }, 247 { "probeprov", DT_IDENT_SCALAR, 0, DIF_VAR_PROBEPROV, 248 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" }, 249 { "progenyof", DT_IDENT_FUNC, 0, DIF_SUBR_PROGENYOF, 250 DT_ATTR_STABCMN, DT_VERS_1_0, 251 &dt_idops_func, "int(pid_t)" }, 252 { "quantize", DT_IDENT_AGGFUNC, 0, DTRACEAGG_QUANTIZE, 253 DT_ATTR_STABCMN, DT_VERS_1_0, 254 &dt_idops_func, "void(@)" }, 255 { "raise", DT_IDENT_ACTFUNC, 0, DT_ACT_RAISE, DT_ATTR_STABCMN, DT_VERS_1_0, 256 &dt_idops_func, "void(int)" }, 257 { "rand", DT_IDENT_FUNC, 0, DIF_SUBR_RAND, DT_ATTR_STABCMN, DT_VERS_1_0, 258 &dt_idops_func, "int()" }, 259 { "rindex", DT_IDENT_FUNC, 0, DIF_SUBR_RINDEX, DT_ATTR_STABCMN, DT_VERS_1_1, 260 &dt_idops_func, "int(const char *, const char *, [int])" }, 261 { "rw_iswriter", DT_IDENT_FUNC, 0, DIF_SUBR_RW_ISWRITER, 262 DT_ATTR_EVOLCMN, DT_VERS_1_0, 263 &dt_idops_func, "int(genunix`krwlock_t *)" }, 264 { "rw_read_held", DT_IDENT_FUNC, 0, DIF_SUBR_RW_READ_HELD, 265 DT_ATTR_EVOLCMN, DT_VERS_1_0, 266 &dt_idops_func, "int(genunix`krwlock_t *)" }, 267 { "rw_write_held", DT_IDENT_FUNC, 0, DIF_SUBR_RW_WRITE_HELD, 268 DT_ATTR_EVOLCMN, DT_VERS_1_0, 269 &dt_idops_func, "int(genunix`krwlock_t *)" }, 270 { "self", DT_IDENT_PTR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0, 271 &dt_idops_type, "void" }, 272 { "speculate", DT_IDENT_ACTFUNC, 0, DT_ACT_SPECULATE, 273 DT_ATTR_STABCMN, DT_VERS_1_0, 274 &dt_idops_func, "void(int)" }, 275 { "speculation", DT_IDENT_FUNC, 0, DIF_SUBR_SPECULATION, 276 DT_ATTR_STABCMN, DT_VERS_1_0, 277 &dt_idops_func, "int()" }, 278 { "stack", DT_IDENT_ACTFUNC, 0, DT_ACT_STACK, DT_ATTR_STABCMN, DT_VERS_1_0, 279 &dt_idops_func, "stack(...)" }, 280 { "stackdepth", DT_IDENT_SCALAR, 0, DIF_VAR_STACKDEPTH, 281 DT_ATTR_STABCMN, DT_VERS_1_0, 282 &dt_idops_type, "uint32_t" }, 283 { "stop", DT_IDENT_ACTFUNC, 0, DT_ACT_STOP, DT_ATTR_STABCMN, DT_VERS_1_0, 284 &dt_idops_func, "void()" }, 285 { "strchr", DT_IDENT_FUNC, 0, DIF_SUBR_STRCHR, DT_ATTR_STABCMN, DT_VERS_1_1, 286 &dt_idops_func, "string(const char *, char)" }, 287 { "strlen", DT_IDENT_FUNC, 0, DIF_SUBR_STRLEN, DT_ATTR_STABCMN, DT_VERS_1_0, 288 &dt_idops_func, "size_t(const char *)" }, 289 { "strjoin", DT_IDENT_FUNC, 0, DIF_SUBR_STRJOIN, DT_ATTR_STABCMN, DT_VERS_1_0, 290 &dt_idops_func, "string(const char *, const char *)" }, 291 { "strrchr", DT_IDENT_FUNC, 0, DIF_SUBR_STRRCHR, DT_ATTR_STABCMN, DT_VERS_1_1, 292 &dt_idops_func, "string(const char *, char)" }, 293 { "strstr", DT_IDENT_FUNC, 0, DIF_SUBR_STRSTR, DT_ATTR_STABCMN, DT_VERS_1_1, 294 &dt_idops_func, "string(const char *, const char *)" }, 295 { "strtok", DT_IDENT_FUNC, 0, DIF_SUBR_STRTOK, DT_ATTR_STABCMN, DT_VERS_1_1, 296 &dt_idops_func, "string(const char *, const char *)" }, 297 { "substr", DT_IDENT_FUNC, 0, DIF_SUBR_SUBSTR, DT_ATTR_STABCMN, DT_VERS_1_1, 298 &dt_idops_func, "string(const char *, int, [int])" }, 299 { "sum", DT_IDENT_AGGFUNC, 0, DTRACEAGG_SUM, DT_ATTR_STABCMN, DT_VERS_1_0, 300 &dt_idops_func, "void(@)" }, 301 { "system", DT_IDENT_ACTFUNC, 0, DT_ACT_SYSTEM, DT_ATTR_STABCMN, DT_VERS_1_0, 302 &dt_idops_func, "void(@, ...)" }, 303 { "this", DT_IDENT_PTR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0, 304 &dt_idops_type, "void" }, 305 { "tid", DT_IDENT_SCALAR, 0, DIF_VAR_TID, DT_ATTR_STABCMN, DT_VERS_1_0, 306 &dt_idops_type, "id_t" }, 307 { "timestamp", DT_IDENT_SCALAR, 0, DIF_VAR_TIMESTAMP, 308 DT_ATTR_STABCMN, DT_VERS_1_0, 309 &dt_idops_type, "uint64_t" }, 310 { "trace", DT_IDENT_ACTFUNC, 0, DT_ACT_TRACE, DT_ATTR_STABCMN, DT_VERS_1_0, 311 &dt_idops_func, "void(@)" }, 312 { "tracemem", DT_IDENT_ACTFUNC, 0, DT_ACT_TRACEMEM, 313 DT_ATTR_STABCMN, DT_VERS_1_0, 314 &dt_idops_func, "void(@, size_t)" }, 315 { "trunc", DT_IDENT_ACTFUNC, 0, DT_ACT_TRUNC, DT_ATTR_STABCMN, 316 DT_VERS_1_0, &dt_idops_func, "void(...)" }, 317 { "uregs", DT_IDENT_ARRAY, 0, DIF_VAR_UREGS, DT_ATTR_STABCMN, DT_VERS_1_0, 318 &dt_idops_regs, NULL }, 319 { "ustack", DT_IDENT_ACTFUNC, 0, DT_ACT_USTACK, DT_ATTR_STABCMN, DT_VERS_1_0, 320 &dt_idops_func, "stack(...)" }, 321 { "ustackdepth", DT_IDENT_SCALAR, 0, DIF_VAR_USTACKDEPTH, 322 DT_ATTR_STABCMN, DT_VERS_1_2, 323 &dt_idops_type, "uint32_t" }, 324 { "vtimestamp", DT_IDENT_SCALAR, 0, DIF_VAR_VTIMESTAMP, 325 DT_ATTR_STABCMN, DT_VERS_1_0, 326 &dt_idops_type, "uint64_t" }, 327 { "walltimestamp", DT_IDENT_SCALAR, 0, DIF_VAR_WALLTIMESTAMP, 328 DT_ATTR_STABCMN, DT_VERS_1_0, 329 &dt_idops_type, "uint64_t" }, 330 { "zonename", DT_IDENT_SCALAR, 0, DIF_VAR_ZONENAME, 331 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" }, 332 { NULL, 0, 0, 0, { 0, 0, 0 }, 0, NULL, NULL } 333 }; 334 335 /* 336 * Tables of ILP32 intrinsic integer and floating-point type templates to use 337 * to populate the dynamic "C" CTF type container. 338 */ 339 static const dt_intrinsic_t _dtrace_intrinsics_32[] = { 340 { "void", { CTF_INT_SIGNED, 0, 0 }, CTF_K_INTEGER }, 341 { "signed", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 342 { "unsigned", { 0, 0, 32 }, CTF_K_INTEGER }, 343 { "char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 344 { "short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER }, 345 { "int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 346 { "long", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 347 { "long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 348 { "signed char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 349 { "signed short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER }, 350 { "signed int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 351 { "signed long", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 352 { "signed long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 353 { "unsigned char", { CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 354 { "unsigned short", { 0, 0, 16 }, CTF_K_INTEGER }, 355 { "unsigned int", { 0, 0, 32 }, CTF_K_INTEGER }, 356 { "unsigned long", { 0, 0, 32 }, CTF_K_INTEGER }, 357 { "unsigned long long", { 0, 0, 64 }, CTF_K_INTEGER }, 358 { "_Bool", { CTF_INT_BOOL, 0, 8 }, CTF_K_INTEGER }, 359 { "float", { CTF_FP_SINGLE, 0, 32 }, CTF_K_FLOAT }, 360 { "double", { CTF_FP_DOUBLE, 0, 64 }, CTF_K_FLOAT }, 361 { "long double", { CTF_FP_LDOUBLE, 0, 128 }, CTF_K_FLOAT }, 362 { "float imaginary", { CTF_FP_IMAGRY, 0, 32 }, CTF_K_FLOAT }, 363 { "double imaginary", { CTF_FP_DIMAGRY, 0, 64 }, CTF_K_FLOAT }, 364 { "long double imaginary", { CTF_FP_LDIMAGRY, 0, 128 }, CTF_K_FLOAT }, 365 { "float complex", { CTF_FP_CPLX, 0, 64 }, CTF_K_FLOAT }, 366 { "double complex", { CTF_FP_DCPLX, 0, 128 }, CTF_K_FLOAT }, 367 { "long double complex", { CTF_FP_LDCPLX, 0, 256 }, CTF_K_FLOAT }, 368 { NULL, { 0, 0, 0 }, 0 } 369 }; 370 371 /* 372 * Tables of LP64 intrinsic integer and floating-point type templates to use 373 * to populate the dynamic "C" CTF type container. 374 */ 375 static const dt_intrinsic_t _dtrace_intrinsics_64[] = { 376 { "void", { CTF_INT_SIGNED, 0, 0 }, CTF_K_INTEGER }, 377 { "signed", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 378 { "unsigned", { 0, 0, 32 }, CTF_K_INTEGER }, 379 { "char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 380 { "short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER }, 381 { "int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 382 { "long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 383 { "long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 384 { "signed char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 385 { "signed short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER }, 386 { "signed int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 387 { "signed long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 388 { "signed long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 389 { "unsigned char", { CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 390 { "unsigned short", { 0, 0, 16 }, CTF_K_INTEGER }, 391 { "unsigned int", { 0, 0, 32 }, CTF_K_INTEGER }, 392 { "unsigned long", { 0, 0, 64 }, CTF_K_INTEGER }, 393 { "unsigned long long", { 0, 0, 64 }, CTF_K_INTEGER }, 394 { "_Bool", { CTF_INT_BOOL, 0, 8 }, CTF_K_INTEGER }, 395 { "float", { CTF_FP_SINGLE, 0, 32 }, CTF_K_FLOAT }, 396 { "double", { CTF_FP_DOUBLE, 0, 64 }, CTF_K_FLOAT }, 397 { "long double", { CTF_FP_LDOUBLE, 0, 128 }, CTF_K_FLOAT }, 398 { "float imaginary", { CTF_FP_IMAGRY, 0, 32 }, CTF_K_FLOAT }, 399 { "double imaginary", { CTF_FP_DIMAGRY, 0, 64 }, CTF_K_FLOAT }, 400 { "long double imaginary", { CTF_FP_LDIMAGRY, 0, 128 }, CTF_K_FLOAT }, 401 { "float complex", { CTF_FP_CPLX, 0, 64 }, CTF_K_FLOAT }, 402 { "double complex", { CTF_FP_DCPLX, 0, 128 }, CTF_K_FLOAT }, 403 { "long double complex", { CTF_FP_LDCPLX, 0, 256 }, CTF_K_FLOAT }, 404 { NULL, { 0, 0, 0 }, 0 } 405 }; 406 407 /* 408 * Tables of ILP32 typedefs to use to populate the dynamic "D" CTF container. 409 * These aliases ensure that D definitions can use typical <sys/types.h> names. 410 */ 411 static const dt_typedef_t _dtrace_typedefs_32[] = { 412 { "char", "int8_t" }, 413 { "short", "int16_t" }, 414 { "int", "int32_t" }, 415 { "long long", "int64_t" }, 416 { "int", "intptr_t" }, 417 { "int", "ssize_t" }, 418 { "unsigned char", "uint8_t" }, 419 { "unsigned short", "uint16_t" }, 420 { "unsigned", "uint32_t" }, 421 { "unsigned long long", "uint64_t" }, 422 { "unsigned char", "uchar_t" }, 423 { "unsigned short", "ushort_t" }, 424 { "unsigned", "uint_t" }, 425 { "unsigned long", "ulong_t" }, 426 { "unsigned long long", "u_longlong_t" }, 427 { "int", "ptrdiff_t" }, 428 { "unsigned", "uintptr_t" }, 429 { "unsigned", "size_t" }, 430 { "long", "id_t" }, 431 { "long", "pid_t" }, 432 { NULL, NULL } 433 }; 434 435 /* 436 * Tables of LP64 typedefs to use to populate the dynamic "D" CTF container. 437 * These aliases ensure that D definitions can use typical <sys/types.h> names. 438 */ 439 static const dt_typedef_t _dtrace_typedefs_64[] = { 440 { "char", "int8_t" }, 441 { "short", "int16_t" }, 442 { "int", "int32_t" }, 443 { "long", "int64_t" }, 444 { "long", "intptr_t" }, 445 { "long", "ssize_t" }, 446 { "unsigned char", "uint8_t" }, 447 { "unsigned short", "uint16_t" }, 448 { "unsigned", "uint32_t" }, 449 { "unsigned long", "uint64_t" }, 450 { "unsigned char", "uchar_t" }, 451 { "unsigned short", "ushort_t" }, 452 { "unsigned", "uint_t" }, 453 { "unsigned long", "ulong_t" }, 454 { "unsigned long long", "u_longlong_t" }, 455 { "long", "ptrdiff_t" }, 456 { "unsigned long", "uintptr_t" }, 457 { "unsigned long", "size_t" }, 458 { "int", "id_t" }, 459 { "int", "pid_t" }, 460 { NULL, NULL } 461 }; 462 463 /* 464 * Tables of ILP32 integer type templates used to populate the dtp->dt_ints[] 465 * cache when a new dtrace client open occurs. Values are set by dtrace_open(). 466 */ 467 static const dt_intdesc_t _dtrace_ints_32[] = { 468 { "int", NULL, CTF_ERR, 0x7fffffffULL }, 469 { "unsigned int", NULL, CTF_ERR, 0xffffffffULL }, 470 { "long", NULL, CTF_ERR, 0x7fffffffULL }, 471 { "unsigned long", NULL, CTF_ERR, 0xffffffffULL }, 472 { "long long", NULL, CTF_ERR, 0x7fffffffffffffffULL }, 473 { "unsigned long long", NULL, CTF_ERR, 0xffffffffffffffffULL } 474 }; 475 476 /* 477 * Tables of LP64 integer type templates used to populate the dtp->dt_ints[] 478 * cache when a new dtrace client open occurs. Values are set by dtrace_open(). 479 */ 480 static const dt_intdesc_t _dtrace_ints_64[] = { 481 { "int", NULL, CTF_ERR, 0x7fffffffULL }, 482 { "unsigned int", NULL, CTF_ERR, 0xffffffffULL }, 483 { "long", NULL, CTF_ERR, 0x7fffffffffffffffULL }, 484 { "unsigned long", NULL, CTF_ERR, 0xffffffffffffffffULL }, 485 { "long long", NULL, CTF_ERR, 0x7fffffffffffffffULL }, 486 { "unsigned long long", NULL, CTF_ERR, 0xffffffffffffffffULL } 487 }; 488 489 /* 490 * Table of macro variable templates used to populate the macro identifier hash 491 * when a new dtrace client open occurs. Values are set by dtrace_update(). 492 */ 493 static const dt_ident_t _dtrace_macros[] = { 494 { "egid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 495 { "euid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 496 { "gid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 497 { "pid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 498 { "pgid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 499 { "ppid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 500 { "projid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 501 { "sid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 502 { "taskid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 503 { "target", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 504 { "uid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 505 { NULL, 0, 0, 0, { 0, 0, 0 }, 0 } 506 }; 507 508 /* 509 * Hard-wired definition string to be compiled and cached every time a new 510 * DTrace library handle is initialized. This string should only be used to 511 * contain definitions that should be present regardless of DTRACE_O_NOLIBS. 512 */ 513 static const char _dtrace_hardwire[] = "\ 514 inline long NULL = 0; \n\ 515 #pragma D binding \"1.0\" NULL\n\ 516 "; 517 518 /* 519 * Default DTrace configuration to use when opening libdtrace DTRACE_O_NODEV. 520 * If DTRACE_O_NODEV is not set, we load the configuration from the kernel. 521 * The use of CTF_MODEL_NATIVE is more subtle than it might appear: we are 522 * relying on the fact that when running dtrace(1M), isaexec will invoke the 523 * binary with the same bitness as the kernel, which is what we want by default 524 * when generating our DIF. The user can override the choice using oflags. 525 */ 526 static const dtrace_conf_t _dtrace_conf = { 527 DIF_VERSION, /* dtc_difversion */ 528 DIF_DIR_NREGS, /* dtc_difintregs */ 529 DIF_DTR_NREGS, /* dtc_diftupregs */ 530 CTF_MODEL_NATIVE /* dtc_ctfmodel */ 531 }; 532 533 const dtrace_attribute_t _dtrace_maxattr = { 534 DTRACE_STABILITY_MAX, 535 DTRACE_STABILITY_MAX, 536 DTRACE_CLASS_MAX 537 }; 538 539 const dtrace_attribute_t _dtrace_defattr = { 540 DTRACE_STABILITY_STABLE, 541 DTRACE_STABILITY_STABLE, 542 DTRACE_CLASS_COMMON 543 }; 544 545 const dtrace_attribute_t _dtrace_symattr = { 546 DTRACE_STABILITY_PRIVATE, 547 DTRACE_STABILITY_PRIVATE, 548 DTRACE_CLASS_UNKNOWN 549 }; 550 551 const dtrace_attribute_t _dtrace_typattr = { 552 DTRACE_STABILITY_PRIVATE, 553 DTRACE_STABILITY_PRIVATE, 554 DTRACE_CLASS_UNKNOWN 555 }; 556 557 const dtrace_attribute_t _dtrace_prvattr = { 558 DTRACE_STABILITY_PRIVATE, 559 DTRACE_STABILITY_PRIVATE, 560 DTRACE_CLASS_UNKNOWN 561 }; 562 563 const dtrace_pattr_t _dtrace_prvdesc = { 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 { DTRACE_STABILITY_UNSTABLE, DTRACE_STABILITY_UNSTABLE, DTRACE_CLASS_COMMON }, 569 }; 570 571 const char *_dtrace_defcpp = "/usr/ccs/lib/cpp"; /* default cpp(1) to invoke */ 572 const char *_dtrace_defld = "/usr/ccs/bin/ld"; /* default ld(1) to invoke */ 573 574 const char *_dtrace_libdir = "/usr/lib/dtrace"; /* default library directory */ 575 const char *_dtrace_moddir = "dtrace"; /* kernel module directory */ 576 577 int _dtrace_strbuckets = 211; /* default number of hash buckets (prime) */ 578 int _dtrace_intbuckets = 256; /* default number of integer buckets (Pof2) */ 579 uint_t _dtrace_strsize = 256; /* default size of string intrinsic type */ 580 uint_t _dtrace_stkindent = 14; /* default whitespace indent for stack/ustack */ 581 uint_t _dtrace_pidbuckets = 64; /* default number of pid hash buckets */ 582 uint_t _dtrace_pidlrulim = 8; /* default number of pid handles to cache */ 583 size_t _dtrace_bufsize = 512; /* default dt_buf_create() size */ 584 int _dtrace_argmax = 32; /* default maximum number of probe arguments */ 585 586 int _dtrace_debug = 0; /* debug messages enabled (off) */ 587 const char *const _dtrace_version = DT_VERS_STRING; /* API version string */ 588 int _dtrace_rdvers = RD_VERSION; /* rtld_db feature version */ 589 590 typedef struct dt_fdlist { 591 int *df_fds; /* array of provider driver file descriptors */ 592 uint_t df_ents; /* number of valid elements in df_fds[] */ 593 uint_t df_size; /* size of df_fds[] */ 594 } dt_fdlist_t; 595 596 #pragma init(_dtrace_init) 597 void 598 _dtrace_init(void) 599 { 600 _dtrace_debug = getenv("DTRACE_DEBUG") != NULL; 601 602 for (; _dtrace_rdvers > 0; _dtrace_rdvers--) { 603 if (rd_init(_dtrace_rdvers) == RD_OK) 604 break; 605 } 606 } 607 608 static dtrace_hdl_t * 609 set_open_errno(dtrace_hdl_t *dtp, int *errp, int err) 610 { 611 if (dtp != NULL) 612 dtrace_close(dtp); 613 if (errp != NULL) 614 *errp = err; 615 return (NULL); 616 } 617 618 static void 619 dt_provmod_open(dt_provmod_t **provmod, dt_fdlist_t *dfp, const char *dirname, 620 const char *subdir, const char *isadir) 621 { 622 dt_provmod_t *prov; 623 char path[PATH_MAX]; 624 struct dirent *dp, *ep; 625 DIR *dirp; 626 int fd; 627 628 if (isadir) { 629 (void) snprintf(path, sizeof (path), "%s/%s/%s", 630 dirname, subdir, isadir); 631 } else { 632 (void) snprintf(path, sizeof (path), "%s/%s", 633 dirname, subdir); 634 } 635 636 if ((dirp = opendir(path)) == NULL) 637 return; /* failed to open directory; just skip it */ 638 639 ep = alloca(sizeof (struct dirent) + PATH_MAX + 1); 640 bzero(ep, sizeof (struct dirent) + PATH_MAX + 1); 641 642 while (readdir_r(dirp, ep, &dp) == 0 && dp != NULL) { 643 if (dp->d_name[0] == '.') 644 continue; /* skip "." and ".." */ 645 646 if (dfp->df_ents == dfp->df_size) { 647 uint_t size = dfp->df_size ? dfp->df_size * 2 : 16; 648 int *fds = realloc(dfp->df_fds, size * sizeof (int)); 649 650 if (fds == NULL) 651 break; /* skip the rest of this directory */ 652 653 dfp->df_fds = fds; 654 dfp->df_size = size; 655 } 656 657 (void) snprintf(path, sizeof (path), 658 "/devices/pseudo/%s@0:%s", dp->d_name, dp->d_name); 659 660 if ((fd = open(path, O_RDONLY)) == -1) 661 continue; /* failed to open driver; just skip it */ 662 663 if (((prov = malloc(sizeof (dt_provmod_t))) == NULL) || 664 (prov->dp_name = malloc(strlen(dp->d_name) + 1)) == NULL) { 665 free(prov); 666 (void) close(fd); 667 break; 668 } 669 670 (void) strcpy(prov->dp_name, dp->d_name); 671 prov->dp_next = *provmod; 672 *provmod = prov; 673 674 dt_dprintf("opened provider %s\n", dp->d_name); 675 dfp->df_fds[dfp->df_ents++] = fd; 676 } 677 678 (void) closedir(dirp); 679 } 680 681 static void 682 dt_provmod_destroy(dt_provmod_t **provmod) 683 { 684 dt_provmod_t *next, *current; 685 686 for (current = *provmod; current != NULL; current = next) { 687 next = current->dp_next; 688 free(current->dp_name); 689 free(current); 690 } 691 692 *provmod = NULL; 693 } 694 695 static const char * 696 dt_get_sysinfo(int cmd, char *buf, size_t len) 697 { 698 ssize_t rv = sysinfo(cmd, buf, len); 699 char *p = buf; 700 701 if (rv < 0 || rv > len) 702 (void) snprintf(buf, len, "%s", "Unknown"); 703 704 while ((p = strchr(p, '.')) != NULL) 705 *p++ = '_'; 706 707 return (buf); 708 } 709 710 static dtrace_hdl_t * 711 dt_vopen(int version, int flags, int *errp, 712 const dtrace_vector_t *vector, void *arg) 713 { 714 dtrace_hdl_t *dtp = NULL; 715 int dtfd = -1, ftfd = -1, fterr = 0; 716 dtrace_prog_t *pgp; 717 dt_module_t *dmp; 718 dt_provmod_t *provmod = NULL; 719 int i, err; 720 721 const dt_intrinsic_t *dinp; 722 const dt_typedef_t *dtyp; 723 const dt_ident_t *idp; 724 725 dtrace_typeinfo_t dtt; 726 ctf_funcinfo_t ctc; 727 ctf_arinfo_t ctr; 728 729 dt_fdlist_t df = { NULL, 0, 0 }; 730 char *p, *q, *path = NULL; 731 const char *isadir = NULL; 732 int pathlen; 733 734 char isadef[32], utsdef[32]; 735 char s1[64], s2[64]; 736 737 if (version <= 0) 738 return (set_open_errno(dtp, errp, EINVAL)); 739 740 if (version > DTRACE_VERSION) 741 return (set_open_errno(dtp, errp, EDT_VERSION)); 742 743 if (flags & ~DTRACE_O_MASK) 744 return (set_open_errno(dtp, errp, EINVAL)); 745 746 if ((flags & DTRACE_O_LP64) && (flags & DTRACE_O_ILP32)) 747 return (set_open_errno(dtp, errp, EINVAL)); 748 749 if (vector == NULL && arg != NULL) 750 return (set_open_errno(dtp, errp, EINVAL)); 751 752 if (elf_version(EV_CURRENT) == EV_NONE) 753 return (set_open_errno(dtp, errp, EDT_ELFVERSION)); 754 755 if (vector != NULL || (flags & DTRACE_O_NODEV)) 756 goto alloc; /* do not attempt to open dtrace device */ 757 758 /* 759 * For each directory in the kernel's module path, build the name of 760 * the corresponding dtrace provider subdirectory and attempt to open a 761 * pseudo-driver whose name matches the name of each provider therein. 762 * We hold them open in the df.df_fds list until we open the DTrace 763 * driver itself, allowing us to see all of the probes provided on this 764 * system. Once we have the DTrace driver open, we can safely close 765 * all the providers now that they have registered with the framework. 766 */ 767 if (sysinfo(SI_ISALIST, isadef, sizeof (isadef)) > 0) { 768 if (strstr(isadef, "sparcv9") != NULL) 769 isadir = "sparcv9"; 770 else if (strstr(isadef, "amd64") != NULL) 771 isadir = "amd64"; 772 } 773 774 if (modctl(MODGETPATHLEN, NULL, &pathlen) == 0 && 775 (path = malloc(pathlen + 1)) != NULL && 776 modctl(MODGETPATH, NULL, path) == 0) { 777 for (p = path; *p != '\0'; p = q) { 778 if ((q = strchr(p, ' ')) != NULL) 779 *q++ = '\0'; 780 else 781 q = p + strlen(p); 782 dt_provmod_open(&provmod, &df, p, 783 _dtrace_moddir, isadir); 784 } 785 } 786 787 dtfd = open("/devices/pseudo/dtrace@0:dtrace", O_RDWR); 788 err = errno; /* save errno from opening dtfd */ 789 790 ftfd = open("/devices/pseudo/fasttrap@0:fasttrap", O_RDWR); 791 fterr = ftfd == -1 ? errno : 0; /* save errno from open ftfd */ 792 793 while (df.df_ents-- != 0) 794 (void) close(df.df_fds[df.df_ents]); 795 796 free(df.df_fds); 797 free(path); 798 799 /* 800 * If we failed to open the dtrace device, fail dtrace_open(). 801 * We convert some kernel errnos to custom libdtrace errnos to 802 * improve the resulting message from the usual strerror(). 803 */ 804 if (dtfd == -1) { 805 dt_provmod_destroy(&provmod); 806 switch (err) { 807 case ENOENT: 808 if (getzoneid() != GLOBAL_ZONEID) 809 err = EDT_ZNOENT; 810 else 811 err = EDT_GNOENT; 812 break; 813 case EBUSY: 814 err = EDT_BUSY; 815 break; 816 case EACCES: 817 err = EDT_ACCESS; 818 break; 819 } 820 return (set_open_errno(dtp, errp, err)); 821 } 822 823 (void) fcntl(dtfd, F_SETFD, FD_CLOEXEC); 824 (void) fcntl(ftfd, F_SETFD, FD_CLOEXEC); 825 826 alloc: 827 if ((dtp = malloc(sizeof (dtrace_hdl_t))) == NULL) 828 return (set_open_errno(dtp, errp, EDT_NOMEM)); 829 830 bzero(dtp, sizeof (dtrace_hdl_t)); 831 dtp->dt_oflags = flags; 832 dtp->dt_prcmode = DT_PROC_STOP_PREINIT; 833 dtp->dt_linkmode = DT_LINK_KERNEL; 834 dtp->dt_linktype = DT_LTYP_ELF; 835 dtp->dt_xlatemode = DT_XL_STATIC; 836 dtp->dt_stdcmode = DT_STDC_XA; 837 dtp->dt_version = version; 838 dtp->dt_fd = dtfd; 839 dtp->dt_ftfd = ftfd; 840 dtp->dt_fterr = fterr; 841 dtp->dt_cdefs_fd = -1; 842 dtp->dt_ddefs_fd = -1; 843 dtp->dt_stdout_fd = -1; 844 dtp->dt_modbuckets = _dtrace_strbuckets; 845 dtp->dt_mods = calloc(dtp->dt_modbuckets, sizeof (dt_module_t *)); 846 dtp->dt_provbuckets = _dtrace_strbuckets; 847 dtp->dt_provs = calloc(dtp->dt_provbuckets, sizeof (dt_provider_t *)); 848 dt_proc_hash_create(dtp); 849 dtp->dt_vmax = DT_VERS_LATEST; 850 dtp->dt_cpp_path = strdup(_dtrace_defcpp); 851 dtp->dt_cpp_argv = malloc(sizeof (char *)); 852 dtp->dt_cpp_argc = 1; 853 dtp->dt_cpp_args = 1; 854 dtp->dt_ld_path = strdup(_dtrace_defld); 855 dtp->dt_provmod = provmod; 856 dtp->dt_vector = vector; 857 dtp->dt_varg = arg; 858 dt_dof_init(dtp); 859 (void) uname(&dtp->dt_uts); 860 861 if (dtp->dt_mods == NULL || dtp->dt_provs == NULL || 862 dtp->dt_procs == NULL || dtp->dt_ld_path == NULL || 863 dtp->dt_cpp_path == NULL || dtp->dt_cpp_argv == NULL) 864 return (set_open_errno(dtp, errp, EDT_NOMEM)); 865 866 for (i = 0; i < DTRACEOPT_MAX; i++) 867 dtp->dt_options[i] = DTRACEOPT_UNSET; 868 869 dtp->dt_cpp_argv[0] = (char *)strbasename(dtp->dt_cpp_path); 870 871 (void) snprintf(isadef, sizeof (isadef), "-D__SUNW_D_%u", 872 (uint_t)(sizeof (void *) * NBBY)); 873 874 (void) snprintf(utsdef, sizeof (utsdef), "-D__%s_%s", 875 dt_get_sysinfo(SI_SYSNAME, s1, sizeof (s1)), 876 dt_get_sysinfo(SI_RELEASE, s2, sizeof (s2))); 877 878 if (dt_cpp_add_arg(dtp, "-D__sun") == NULL || 879 dt_cpp_add_arg(dtp, "-D__unix") == NULL || 880 dt_cpp_add_arg(dtp, "-D__SVR4") == NULL || 881 dt_cpp_add_arg(dtp, "-D__SUNW_D=1") == NULL || 882 dt_cpp_add_arg(dtp, isadef) == NULL || 883 dt_cpp_add_arg(dtp, utsdef) == NULL) 884 return (set_open_errno(dtp, errp, EDT_NOMEM)); 885 886 if (flags & DTRACE_O_NODEV) 887 bcopy(&_dtrace_conf, &dtp->dt_conf, sizeof (_dtrace_conf)); 888 else if (dt_ioctl(dtp, DTRACEIOC_CONF, &dtp->dt_conf) != 0) 889 return (set_open_errno(dtp, errp, errno)); 890 891 if (flags & DTRACE_O_LP64) 892 dtp->dt_conf.dtc_ctfmodel = CTF_MODEL_LP64; 893 else if (flags & DTRACE_O_ILP32) 894 dtp->dt_conf.dtc_ctfmodel = CTF_MODEL_ILP32; 895 896 #ifdef __sparc 897 /* 898 * On SPARC systems, __sparc is always defined for <sys/isa_defs.h> 899 * and __sparcv9 is defined if we are doing a 64-bit compile. 900 */ 901 if (dt_cpp_add_arg(dtp, "-D__sparc") == NULL) 902 return (set_open_errno(dtp, errp, EDT_NOMEM)); 903 904 if (dtp->dt_conf.dtc_ctfmodel == CTF_MODEL_LP64 && 905 dt_cpp_add_arg(dtp, "-D__sparcv9") == NULL) 906 return (set_open_errno(dtp, errp, EDT_NOMEM)); 907 #endif 908 909 #ifdef __x86 910 /* 911 * On x86 systems, __i386 is defined for <sys/isa_defs.h> for 32-bit 912 * compiles and __amd64 is defined for 64-bit compiles. Unlike SPARC, 913 * they are defined exclusive of one another (see PSARC 2004/619). 914 */ 915 if (dtp->dt_conf.dtc_ctfmodel == CTF_MODEL_LP64) 916 p = dt_cpp_add_arg(dtp, "-D__amd64"); 917 else 918 p = dt_cpp_add_arg(dtp, "-D__i386"); 919 920 if (p == NULL) 921 return (set_open_errno(dtp, errp, EDT_NOMEM)); 922 #endif 923 924 if (dtp->dt_conf.dtc_difversion < DIF_VERSION) 925 return (set_open_errno(dtp, errp, EDT_DIFVERS)); 926 927 if (dtp->dt_conf.dtc_ctfmodel == CTF_MODEL_ILP32) 928 bcopy(_dtrace_ints_32, dtp->dt_ints, sizeof (_dtrace_ints_32)); 929 else 930 bcopy(_dtrace_ints_64, dtp->dt_ints, sizeof (_dtrace_ints_64)); 931 932 dtp->dt_macros = dt_idhash_create("macro", NULL, 0, UINT_MAX); 933 dtp->dt_aggs = dt_idhash_create("aggregation", NULL, 0, UINT_MAX); 934 935 dtp->dt_globals = dt_idhash_create("global", _dtrace_globals, 936 DIF_VAR_OTHER_UBASE, DIF_VAR_OTHER_MAX); 937 938 dtp->dt_tls = dt_idhash_create("thread local", NULL, 939 DIF_VAR_OTHER_UBASE, DIF_VAR_OTHER_MAX); 940 941 if (dtp->dt_macros == NULL || dtp->dt_aggs == NULL || 942 dtp->dt_globals == NULL || dtp->dt_tls == NULL) 943 return (set_open_errno(dtp, errp, EDT_NOMEM)); 944 945 /* 946 * Populate the dt_macros identifier hash table by hand: we can't use 947 * the dt_idhash_populate() mechanism because we're not yet compiling 948 * and dtrace_update() needs to immediately reference these idents. 949 */ 950 for (idp = _dtrace_macros; idp->di_name != NULL; idp++) { 951 if (dt_idhash_insert(dtp->dt_macros, idp->di_name, 952 idp->di_kind, idp->di_flags, idp->di_id, idp->di_attr, 953 idp->di_vers, idp->di_ops ? idp->di_ops : &dt_idops_thaw, 954 idp->di_iarg, 0) == NULL) 955 return (set_open_errno(dtp, errp, EDT_NOMEM)); 956 } 957 958 /* 959 * Update the module list using /system/object and load the values for 960 * the macro variable definitions according to the current process. 961 */ 962 dtrace_update(dtp); 963 964 /* 965 * Select the intrinsics and typedefs we want based on the data model. 966 * The intrinsics are under "C". The typedefs are added under "D". 967 */ 968 if (dtp->dt_conf.dtc_ctfmodel == CTF_MODEL_ILP32) { 969 dinp = _dtrace_intrinsics_32; 970 dtyp = _dtrace_typedefs_32; 971 } else { 972 dinp = _dtrace_intrinsics_64; 973 dtyp = _dtrace_typedefs_64; 974 } 975 976 /* 977 * Create a dynamic CTF container under the "C" scope for intrinsic 978 * types and types defined in ANSI-C header files that are included. 979 */ 980 if ((dmp = dtp->dt_cdefs = dt_module_create(dtp, "C")) == NULL) 981 return (set_open_errno(dtp, errp, EDT_NOMEM)); 982 983 if ((dmp->dm_ctfp = ctf_create(&dtp->dt_ctferr)) == NULL) 984 return (set_open_errno(dtp, errp, EDT_CTF)); 985 986 dt_dprintf("created CTF container for %s (%p)\n", 987 dmp->dm_name, (void *)dmp->dm_ctfp); 988 989 (void) ctf_setmodel(dmp->dm_ctfp, dtp->dt_conf.dtc_ctfmodel); 990 ctf_setspecific(dmp->dm_ctfp, dmp); 991 992 dmp->dm_flags = DT_DM_LOADED; /* fake up loaded bit */ 993 dmp->dm_modid = -1; /* no module ID */ 994 995 /* 996 * Fill the dynamic "C" CTF container with all of the intrinsic 997 * integer and floating-point types appropriate for this data model. 998 */ 999 for (; dinp->din_name != NULL; dinp++) { 1000 if (dinp->din_kind == CTF_K_INTEGER) { 1001 err = ctf_add_integer(dmp->dm_ctfp, CTF_ADD_ROOT, 1002 dinp->din_name, &dinp->din_data); 1003 } else { 1004 err = ctf_add_float(dmp->dm_ctfp, CTF_ADD_ROOT, 1005 dinp->din_name, &dinp->din_data); 1006 } 1007 1008 if (err == CTF_ERR) { 1009 dt_dprintf("failed to add %s to C container: %s\n", 1010 dinp->din_name, ctf_errmsg( 1011 ctf_errno(dmp->dm_ctfp))); 1012 return (set_open_errno(dtp, errp, EDT_CTF)); 1013 } 1014 } 1015 1016 if (ctf_update(dmp->dm_ctfp) != 0) { 1017 dt_dprintf("failed to update C container: %s\n", 1018 ctf_errmsg(ctf_errno(dmp->dm_ctfp))); 1019 return (set_open_errno(dtp, errp, EDT_CTF)); 1020 } 1021 1022 /* 1023 * Add intrinsic pointer types that are needed to initialize printf 1024 * format dictionary types (see table in dt_printf.c). 1025 */ 1026 (void) ctf_add_pointer(dmp->dm_ctfp, CTF_ADD_ROOT, 1027 ctf_lookup_by_name(dmp->dm_ctfp, "void")); 1028 1029 (void) ctf_add_pointer(dmp->dm_ctfp, CTF_ADD_ROOT, 1030 ctf_lookup_by_name(dmp->dm_ctfp, "char")); 1031 1032 (void) ctf_add_pointer(dmp->dm_ctfp, CTF_ADD_ROOT, 1033 ctf_lookup_by_name(dmp->dm_ctfp, "int")); 1034 1035 if (ctf_update(dmp->dm_ctfp) != 0) { 1036 dt_dprintf("failed to update C container: %s\n", 1037 ctf_errmsg(ctf_errno(dmp->dm_ctfp))); 1038 return (set_open_errno(dtp, errp, EDT_CTF)); 1039 } 1040 1041 /* 1042 * Create a dynamic CTF container under the "D" scope for types that 1043 * are defined by the D program itself or on-the-fly by the D compiler. 1044 * The "D" CTF container is a child of the "C" CTF container. 1045 */ 1046 if ((dmp = dtp->dt_ddefs = dt_module_create(dtp, "D")) == NULL) 1047 return (set_open_errno(dtp, errp, EDT_NOMEM)); 1048 1049 if ((dmp->dm_ctfp = ctf_create(&dtp->dt_ctferr)) == NULL) 1050 return (set_open_errno(dtp, errp, EDT_CTF)); 1051 1052 dt_dprintf("created CTF container for %s (%p)\n", 1053 dmp->dm_name, (void *)dmp->dm_ctfp); 1054 1055 (void) ctf_setmodel(dmp->dm_ctfp, dtp->dt_conf.dtc_ctfmodel); 1056 ctf_setspecific(dmp->dm_ctfp, dmp); 1057 1058 dmp->dm_flags = DT_DM_LOADED; /* fake up loaded bit */ 1059 dmp->dm_modid = -1; /* no module ID */ 1060 1061 if (ctf_import(dmp->dm_ctfp, dtp->dt_cdefs->dm_ctfp) == CTF_ERR) { 1062 dt_dprintf("failed to import D parent container: %s\n", 1063 ctf_errmsg(ctf_errno(dmp->dm_ctfp))); 1064 return (set_open_errno(dtp, errp, EDT_CTF)); 1065 } 1066 1067 /* 1068 * Fill the dynamic "D" CTF container with all of the built-in typedefs 1069 * that we need to use for our D variable and function definitions. 1070 * This ensures that basic inttypes.h names are always available to us. 1071 */ 1072 for (; dtyp->dty_src != NULL; dtyp++) { 1073 if (ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT, 1074 dtyp->dty_dst, ctf_lookup_by_name(dmp->dm_ctfp, 1075 dtyp->dty_src)) == CTF_ERR) { 1076 dt_dprintf("failed to add typedef %s %s to D " 1077 "container: %s", dtyp->dty_src, dtyp->dty_dst, 1078 ctf_errmsg(ctf_errno(dmp->dm_ctfp))); 1079 return (set_open_errno(dtp, errp, EDT_CTF)); 1080 } 1081 } 1082 1083 /* 1084 * Insert a CTF ID corresponding to a pointer to a type of kind 1085 * CTF_K_FUNCTION we can use in the compiler for function pointers. 1086 * CTF treats all function pointers as "int (*)()" so we only need one. 1087 */ 1088 ctc.ctc_return = ctf_lookup_by_name(dmp->dm_ctfp, "int"); 1089 ctc.ctc_argc = 0; 1090 ctc.ctc_flags = 0; 1091 1092 dtp->dt_type_func = ctf_add_function(dmp->dm_ctfp, 1093 CTF_ADD_ROOT, &ctc, NULL); 1094 1095 dtp->dt_type_fptr = ctf_add_pointer(dmp->dm_ctfp, 1096 CTF_ADD_ROOT, dtp->dt_type_func); 1097 1098 /* 1099 * We also insert CTF definitions for the special D intrinsic types 1100 * string and <DYN> into the D container. The string type is added 1101 * as a typedef of char[n]. The <DYN> type is an alias for void. 1102 * We compare types to these special CTF ids throughout the compiler. 1103 */ 1104 ctr.ctr_contents = ctf_lookup_by_name(dmp->dm_ctfp, "char"); 1105 ctr.ctr_index = ctf_lookup_by_name(dmp->dm_ctfp, "long"); 1106 ctr.ctr_nelems = _dtrace_strsize; 1107 1108 dtp->dt_type_str = ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT, 1109 "string", ctf_add_array(dmp->dm_ctfp, CTF_ADD_ROOT, &ctr)); 1110 1111 dtp->dt_type_dyn = ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT, 1112 "<DYN>", ctf_lookup_by_name(dmp->dm_ctfp, "void")); 1113 1114 dtp->dt_type_stack = ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT, 1115 "stack", ctf_lookup_by_name(dmp->dm_ctfp, "void")); 1116 1117 if (dtp->dt_type_func == CTF_ERR || dtp->dt_type_fptr == CTF_ERR || 1118 dtp->dt_type_str == CTF_ERR || dtp->dt_type_dyn == CTF_ERR || 1119 dtp->dt_type_stack == CTF_ERR) { 1120 dt_dprintf("failed to add intrinsic to D container: %s\n", 1121 ctf_errmsg(ctf_errno(dmp->dm_ctfp))); 1122 return (set_open_errno(dtp, errp, EDT_CTF)); 1123 } 1124 1125 if (ctf_update(dmp->dm_ctfp) != 0) { 1126 dt_dprintf("failed update D container: %s\n", 1127 ctf_errmsg(ctf_errno(dmp->dm_ctfp))); 1128 return (set_open_errno(dtp, errp, EDT_CTF)); 1129 } 1130 1131 /* 1132 * Initialize the integer description table used to convert integer 1133 * constants to the appropriate types. Refer to the comments above 1134 * dt_node_int() for a complete description of how this table is used. 1135 */ 1136 for (i = 0; i < sizeof (dtp->dt_ints) / sizeof (dtp->dt_ints[0]); i++) { 1137 if (dtrace_lookup_by_type(dtp, DTRACE_OBJ_EVERY, 1138 dtp->dt_ints[i].did_name, &dtt) != 0) { 1139 dt_dprintf("failed to lookup integer type %s: %s\n", 1140 dtp->dt_ints[i].did_name, 1141 dtrace_errmsg(dtp, dtrace_errno(dtp))); 1142 return (set_open_errno(dtp, errp, dtp->dt_errno)); 1143 } 1144 dtp->dt_ints[i].did_ctfp = dtt.dtt_ctfp; 1145 dtp->dt_ints[i].did_type = dtt.dtt_type; 1146 } 1147 1148 /* 1149 * Now that we've created the "C" and "D" containers, move them to the 1150 * start of the module list so that these types and symbols are found 1151 * first (for stability) when iterating through the module list. 1152 */ 1153 dt_list_delete(&dtp->dt_modlist, dtp->dt_ddefs); 1154 dt_list_prepend(&dtp->dt_modlist, dtp->dt_ddefs); 1155 1156 dt_list_delete(&dtp->dt_modlist, dtp->dt_cdefs); 1157 dt_list_prepend(&dtp->dt_modlist, dtp->dt_cdefs); 1158 1159 if (dt_pfdict_create(dtp) == -1) 1160 return (set_open_errno(dtp, errp, dtp->dt_errno)); 1161 1162 /* 1163 * If we are opening libdtrace DTRACE_O_NODEV enable C_ZDEFS by default 1164 * because without /dev/dtrace open, we will not be able to load the 1165 * names and attributes of any providers or probes from the kernel. 1166 */ 1167 if (flags & DTRACE_O_NODEV) 1168 dtp->dt_cflags |= DTRACE_C_ZDEFS; 1169 1170 /* 1171 * Load hard-wired inlines into the definition cache by calling the 1172 * compiler on the raw definition string defined above. 1173 */ 1174 if ((pgp = dtrace_program_strcompile(dtp, _dtrace_hardwire, 1175 DTRACE_PROBESPEC_NONE, DTRACE_C_EMPTY, 0, NULL)) == NULL) { 1176 dt_dprintf("failed to load hard-wired definitions: %s\n", 1177 dtrace_errmsg(dtp, dtrace_errno(dtp))); 1178 return (set_open_errno(dtp, errp, EDT_HARDWIRE)); 1179 } 1180 1181 dt_program_destroy(dtp, pgp); 1182 1183 /* 1184 * Set up the default DTrace library path. Once set, the next call to 1185 * dt_compile() will compile all the libraries. We intentionally defer 1186 * library processing to improve overhead for clients that don't ever 1187 * compile, and to provide better error reporting (because the full 1188 * reporting of compiler errors requires dtrace_open() to succeed). 1189 */ 1190 if (dtrace_setopt(dtp, "libdir", _dtrace_libdir) != 0) 1191 return (set_open_errno(dtp, errp, dtp->dt_errno)); 1192 1193 return (dtp); 1194 } 1195 1196 dtrace_hdl_t * 1197 dtrace_open(int version, int flags, int *errp) 1198 { 1199 return (dt_vopen(version, flags, errp, NULL, NULL)); 1200 } 1201 1202 dtrace_hdl_t * 1203 dtrace_vopen(int version, int flags, int *errp, 1204 const dtrace_vector_t *vector, void *arg) 1205 { 1206 return (dt_vopen(version, flags, errp, vector, arg)); 1207 } 1208 1209 void 1210 dtrace_close(dtrace_hdl_t *dtp) 1211 { 1212 dt_ident_t *idp, *ndp; 1213 dt_module_t *dmp; 1214 dt_provider_t *pvp; 1215 dtrace_prog_t *pgp; 1216 dt_xlator_t *dxp; 1217 dt_dirpath_t *dirp; 1218 int i; 1219 1220 while ((pgp = dt_list_next(&dtp->dt_programs)) != NULL) 1221 dt_program_destroy(dtp, pgp); 1222 1223 while ((dxp = dt_list_next(&dtp->dt_xlators)) != NULL) 1224 dt_xlator_destroy(dtp, dxp); 1225 1226 dt_free(dtp, dtp->dt_xlatormap); 1227 1228 for (idp = dtp->dt_externs; idp != NULL; idp = ndp) { 1229 ndp = idp->di_next; 1230 dt_ident_destroy(idp); 1231 } 1232 1233 if (dtp->dt_macros != NULL) 1234 dt_idhash_destroy(dtp->dt_macros); 1235 if (dtp->dt_aggs != NULL) 1236 dt_idhash_destroy(dtp->dt_aggs); 1237 if (dtp->dt_globals != NULL) 1238 dt_idhash_destroy(dtp->dt_globals); 1239 if (dtp->dt_tls != NULL) 1240 dt_idhash_destroy(dtp->dt_tls); 1241 1242 while ((dmp = dt_list_next(&dtp->dt_modlist)) != NULL) 1243 dt_module_destroy(dtp, dmp); 1244 1245 while ((pvp = dt_list_next(&dtp->dt_provlist)) != NULL) 1246 dt_provider_destroy(dtp, pvp); 1247 1248 if (dtp->dt_procs != NULL) 1249 dt_proc_hash_destroy(dtp); 1250 1251 if (dtp->dt_fd != -1) 1252 (void) close(dtp->dt_fd); 1253 if (dtp->dt_ftfd != -1) 1254 (void) close(dtp->dt_ftfd); 1255 if (dtp->dt_cdefs_fd != -1) 1256 (void) close(dtp->dt_cdefs_fd); 1257 if (dtp->dt_ddefs_fd != -1) 1258 (void) close(dtp->dt_ddefs_fd); 1259 if (dtp->dt_stdout_fd != -1) 1260 (void) close(dtp->dt_stdout_fd); 1261 1262 dt_epid_destroy(dtp); 1263 dt_aggid_destroy(dtp); 1264 dt_format_destroy(dtp); 1265 dt_buffered_destroy(dtp); 1266 dt_aggregate_destroy(dtp); 1267 free(dtp->dt_buf.dtbd_data); 1268 dt_pfdict_destroy(dtp); 1269 dt_provmod_destroy(&dtp->dt_provmod); 1270 dt_dof_fini(dtp); 1271 1272 for (i = 1; i < dtp->dt_cpp_argc; i++) 1273 free(dtp->dt_cpp_argv[i]); 1274 1275 while ((dirp = dt_list_next(&dtp->dt_lib_path)) != NULL) { 1276 dt_list_delete(&dtp->dt_lib_path, dirp); 1277 free(dirp->dir_path); 1278 free(dirp); 1279 } 1280 1281 free(dtp->dt_cpp_argv); 1282 free(dtp->dt_cpp_path); 1283 free(dtp->dt_ld_path); 1284 1285 free(dtp->dt_mods); 1286 free(dtp->dt_provs); 1287 free(dtp); 1288 } 1289 1290 int 1291 dtrace_go(dtrace_hdl_t *dtp) 1292 { 1293 void *dof; 1294 int err; 1295 1296 if (dtp->dt_active) 1297 return (dt_set_errno(dtp, EINVAL)); 1298 1299 /* 1300 * If a dtrace:::ERROR program and callback are registered, enable the 1301 * program before we start tracing. If this fails for a vector open 1302 * with ENOTTY, we permit dtrace_go() to succeed so that vector clients 1303 * such as mdb's dtrace module can execute the rest of dtrace_go() even 1304 * though they do not provide support for the DTRACEIOC_ENABLE ioctl. 1305 */ 1306 if (dtp->dt_errprog != NULL && 1307 dtrace_program_exec(dtp, dtp->dt_errprog, NULL) == -1 && ( 1308 dtp->dt_errno != ENOTTY || dtp->dt_vector == NULL)) 1309 return (-1); /* dt_errno has been set for us */ 1310 1311 if ((dof = dtrace_getopt_dof(dtp)) == NULL) 1312 return (-1); /* dt_errno has been set for us */ 1313 1314 err = dt_ioctl(dtp, DTRACEIOC_ENABLE, dof); 1315 dtrace_dof_destroy(dtp, dof); 1316 1317 if (err == -1 && (errno != ENOTTY || dtp->dt_vector == NULL)) 1318 return (dt_set_errno(dtp, errno)); 1319 1320 if (dt_ioctl(dtp, DTRACEIOC_GO, &dtp->dt_beganon) == -1) { 1321 if (errno == EACCES) 1322 return (dt_set_errno(dtp, EDT_DESTRUCTIVE)); 1323 1324 if (errno == EALREADY) 1325 return (dt_set_errno(dtp, EDT_ISANON)); 1326 1327 if (errno == ENOENT) 1328 return (dt_set_errno(dtp, EDT_NOANON)); 1329 1330 if (errno == E2BIG) 1331 return (dt_set_errno(dtp, EDT_ENDTOOBIG)); 1332 1333 if (errno == ENOSPC) 1334 return (dt_set_errno(dtp, EDT_BUFTOOSMALL)); 1335 1336 return (dt_set_errno(dtp, errno)); 1337 } 1338 1339 dtp->dt_active = 1; 1340 1341 if (dt_options_load(dtp) == -1) 1342 return (dt_set_errno(dtp, errno)); 1343 1344 return (dt_aggregate_go(dtp)); 1345 } 1346 1347 int 1348 dtrace_stop(dtrace_hdl_t *dtp) 1349 { 1350 if (dtp->dt_stopped) 1351 return (0); 1352 1353 if (dt_ioctl(dtp, DTRACEIOC_STOP, &dtp->dt_endedon) == -1) 1354 return (dt_set_errno(dtp, errno)); 1355 1356 dtp->dt_stopped = 1; 1357 1358 return (0); 1359 } 1360 1361 int 1362 dtrace_provider_modules(dtrace_hdl_t *dtp, const char **mods, int nmods) 1363 { 1364 dt_provmod_t *prov; 1365 int i = 0; 1366 1367 for (prov = dtp->dt_provmod; prov != NULL; prov = prov->dp_next, i++) { 1368 if (i < nmods) 1369 mods[i] = prov->dp_name; 1370 } 1371 1372 return (i); 1373 } 1374 1375 int 1376 dtrace_ctlfd(dtrace_hdl_t *dtp) 1377 { 1378 return (dtp->dt_fd); 1379 } 1380