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_LATEST DT_VERS_1_1 85 #define DT_VERS_STRING "Sun D 1.1" 86 87 const dt_version_t _dtrace_versions[] = { 88 DT_VERS_1_0, /* D API 1.0.0 (PSARC 2001/466) Solaris 10 FCS */ 89 DT_VERS_1_1, /* D API 1.1.0 Solaris 10 Update 1 */ 90 0 91 }; 92 93 /* 94 * Table of global identifiers. This is used to populate the global identifier 95 * hash when a new dtrace client open occurs. For more info see dt_ident.h. 96 * The global identifiers that represent functions use the dt_idops_func ops 97 * and specify the private data pointer as a prototype string which is parsed 98 * when the identifier is first encountered. These prototypes look like ANSI 99 * C function prototypes except that the special symbol "@" can be used as a 100 * wildcard to represent a single parameter of any type (i.e. any dt_node_t). 101 * The standard "..." notation can also be used to represent varargs. An empty 102 * parameter list is taken to mean void (that is, no arguments are permitted). 103 * A parameter enclosed in square brackets (e.g. "[int]") denotes an optional 104 * argument. 105 */ 106 static const dt_ident_t _dtrace_globals[] = { 107 { "alloca", DT_IDENT_FUNC, 0, DIF_SUBR_ALLOCA, DT_ATTR_STABCMN, DT_VERS_1_0, 108 &dt_idops_func, "void *(size_t)" }, 109 { "arg0", DT_IDENT_SCALAR, 0, DIF_VAR_ARG0, DT_ATTR_STABCMN, DT_VERS_1_0, 110 &dt_idops_type, "int64_t" }, 111 { "arg1", DT_IDENT_SCALAR, 0, DIF_VAR_ARG1, DT_ATTR_STABCMN, DT_VERS_1_0, 112 &dt_idops_type, "int64_t" }, 113 { "arg2", DT_IDENT_SCALAR, 0, DIF_VAR_ARG2, DT_ATTR_STABCMN, DT_VERS_1_0, 114 &dt_idops_type, "int64_t" }, 115 { "arg3", DT_IDENT_SCALAR, 0, DIF_VAR_ARG3, DT_ATTR_STABCMN, DT_VERS_1_0, 116 &dt_idops_type, "int64_t" }, 117 { "arg4", DT_IDENT_SCALAR, 0, DIF_VAR_ARG4, DT_ATTR_STABCMN, DT_VERS_1_0, 118 &dt_idops_type, "int64_t" }, 119 { "arg5", DT_IDENT_SCALAR, 0, DIF_VAR_ARG5, DT_ATTR_STABCMN, DT_VERS_1_0, 120 &dt_idops_type, "int64_t" }, 121 { "arg6", DT_IDENT_SCALAR, 0, DIF_VAR_ARG6, DT_ATTR_STABCMN, DT_VERS_1_0, 122 &dt_idops_type, "int64_t" }, 123 { "arg7", DT_IDENT_SCALAR, 0, DIF_VAR_ARG7, DT_ATTR_STABCMN, DT_VERS_1_0, 124 &dt_idops_type, "int64_t" }, 125 { "arg8", DT_IDENT_SCALAR, 0, DIF_VAR_ARG8, DT_ATTR_STABCMN, DT_VERS_1_0, 126 &dt_idops_type, "int64_t" }, 127 { "arg9", DT_IDENT_SCALAR, 0, DIF_VAR_ARG9, DT_ATTR_STABCMN, DT_VERS_1_0, 128 &dt_idops_type, "int64_t" }, 129 { "args", DT_IDENT_ARRAY, 0, DIF_VAR_ARGS, DT_ATTR_STABCMN, DT_VERS_1_0, 130 &dt_idops_args, NULL }, 131 { "avg", DT_IDENT_AGGFUNC, 0, DTRACEAGG_AVG, DT_ATTR_STABCMN, DT_VERS_1_0, 132 &dt_idops_func, "void(@)" }, 133 { "basename", DT_IDENT_FUNC, 0, DIF_SUBR_BASENAME, DT_ATTR_STABCMN, DT_VERS_1_0, 134 &dt_idops_func, "string(const char *)" }, 135 { "bcopy", DT_IDENT_FUNC, 0, DIF_SUBR_BCOPY, DT_ATTR_STABCMN, DT_VERS_1_0, 136 &dt_idops_func, "void(void *, void *, size_t)" }, 137 { "breakpoint", DT_IDENT_ACTFUNC, 0, DT_ACT_BREAKPOINT, 138 DT_ATTR_STABCMN, DT_VERS_1_0, 139 &dt_idops_func, "void()" }, 140 { "caller", DT_IDENT_SCALAR, 0, DIF_VAR_CALLER, DT_ATTR_STABCMN, DT_VERS_1_0, 141 &dt_idops_type, "uintptr_t" }, 142 { "chill", DT_IDENT_ACTFUNC, 0, DT_ACT_CHILL, DT_ATTR_STABCMN, DT_VERS_1_0, 143 &dt_idops_func, "void(int)" }, 144 { "cleanpath", DT_IDENT_FUNC, 0, DIF_SUBR_CLEANPATH, DT_ATTR_STABCMN, 145 DT_VERS_1_0, &dt_idops_func, "string(const char *)" }, 146 { "clear", DT_IDENT_ACTFUNC, 0, DT_ACT_CLEAR, DT_ATTR_STABCMN, DT_VERS_1_0, 147 &dt_idops_func, "void(...)" }, 148 { "commit", DT_IDENT_ACTFUNC, 0, DT_ACT_COMMIT, DT_ATTR_STABCMN, DT_VERS_1_0, 149 &dt_idops_func, "void(int)" }, 150 { "copyin", DT_IDENT_FUNC, 0, DIF_SUBR_COPYIN, DT_ATTR_STABCMN, DT_VERS_1_0, 151 &dt_idops_func, "void *(uintptr_t, size_t)" }, 152 { "copyinstr", DT_IDENT_FUNC, 0, DIF_SUBR_COPYINSTR, 153 DT_ATTR_STABCMN, DT_VERS_1_0, 154 &dt_idops_func, "string(uintptr_t, [size_t])" }, 155 { "copyinto", DT_IDENT_FUNC, 0, DIF_SUBR_COPYINTO, DT_ATTR_STABCMN, 156 DT_VERS_1_0, &dt_idops_func, "void(uintptr_t, size_t, void *)" }, 157 { "copyout", DT_IDENT_FUNC, 0, DIF_SUBR_COPYOUT, DT_ATTR_STABCMN, DT_VERS_1_0, 158 &dt_idops_func, "void(void *, uintptr_t, size_t)" }, 159 { "copyoutstr", DT_IDENT_FUNC, 0, DIF_SUBR_COPYOUTSTR, 160 DT_ATTR_STABCMN, DT_VERS_1_0, 161 &dt_idops_func, "void(char *, uintptr_t, size_t)" }, 162 { "count", DT_IDENT_AGGFUNC, 0, DTRACEAGG_COUNT, DT_ATTR_STABCMN, DT_VERS_1_0, 163 &dt_idops_func, "void()" }, 164 { "curthread", DT_IDENT_SCALAR, 0, DIF_VAR_CURTHREAD, 165 { DTRACE_STABILITY_STABLE, DTRACE_STABILITY_PRIVATE, 166 DTRACE_CLASS_COMMON }, DT_VERS_1_0, 167 &dt_idops_type, "genunix`kthread_t *" }, 168 { "ddi_pathname", DT_IDENT_FUNC, 0, DIF_SUBR_DDI_PATHNAME, 169 DT_ATTR_EVOLCMN, DT_VERS_1_0, 170 &dt_idops_func, "string(void *, int64_t)" }, 171 { "denormalize", DT_IDENT_ACTFUNC, 0, DT_ACT_DENORMALIZE, DT_ATTR_STABCMN, 172 DT_VERS_1_0, &dt_idops_func, "void(...)" }, 173 { "dirname", DT_IDENT_FUNC, 0, DIF_SUBR_DIRNAME, DT_ATTR_STABCMN, DT_VERS_1_0, 174 &dt_idops_func, "string(const char *)" }, 175 { "discard", DT_IDENT_ACTFUNC, 0, DT_ACT_DISCARD, DT_ATTR_STABCMN, DT_VERS_1_0, 176 &dt_idops_func, "void(int)" }, 177 { "epid", DT_IDENT_SCALAR, 0, DIF_VAR_EPID, DT_ATTR_STABCMN, DT_VERS_1_0, 178 &dt_idops_type, "uint_t" }, 179 { "execname", DT_IDENT_SCALAR, 0, DIF_VAR_EXECNAME, 180 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" }, 181 { "exit", DT_IDENT_ACTFUNC, 0, DT_ACT_EXIT, DT_ATTR_STABCMN, DT_VERS_1_0, 182 &dt_idops_func, "void(int)" }, 183 { "freopen", DT_IDENT_ACTFUNC, 0, DT_ACT_FREOPEN, DT_ATTR_STABCMN, 184 DT_VERS_1_1, &dt_idops_func, "void(@, ...)" }, 185 { "ftruncate", DT_IDENT_ACTFUNC, 0, DT_ACT_FTRUNCATE, DT_ATTR_STABCMN, 186 DT_VERS_1_0, &dt_idops_func, "void()" }, 187 { "getmajor", DT_IDENT_FUNC, 0, DIF_SUBR_GETMAJOR, 188 DT_ATTR_EVOLCMN, DT_VERS_1_0, 189 &dt_idops_func, "genunix`major_t(genunix`dev_t)" }, 190 { "getminor", DT_IDENT_FUNC, 0, DIF_SUBR_GETMINOR, 191 DT_ATTR_EVOLCMN, DT_VERS_1_0, 192 &dt_idops_func, "genunix`minor_t(genunix`dev_t)" }, 193 { "id", DT_IDENT_SCALAR, 0, DIF_VAR_ID, DT_ATTR_STABCMN, DT_VERS_1_0, 194 &dt_idops_type, "uint_t" }, 195 { "index", DT_IDENT_FUNC, 0, DIF_SUBR_INDEX, DT_ATTR_STABCMN, DT_VERS_1_1, 196 &dt_idops_func, "int(const char *, const char *, [int])" }, 197 { "ipl", DT_IDENT_SCALAR, 0, DIF_VAR_IPL, DT_ATTR_STABCMN, DT_VERS_1_0, 198 &dt_idops_type, "uint_t" }, 199 { "jstack", DT_IDENT_ACTFUNC, 0, DT_ACT_JSTACK, DT_ATTR_STABCMN, DT_VERS_1_0, 200 &dt_idops_func, "stack(...)" }, 201 { "lltostr", DT_IDENT_FUNC, 0, DIF_SUBR_LLTOSTR, DT_ATTR_STABCMN, DT_VERS_1_0, 202 &dt_idops_func, "string(int64_t)" }, 203 { "lquantize", DT_IDENT_AGGFUNC, 0, DTRACEAGG_LQUANTIZE, 204 DT_ATTR_STABCMN, DT_VERS_1_0, 205 &dt_idops_func, "void(@, int32_t, int32_t, ...)" }, 206 { "max", DT_IDENT_AGGFUNC, 0, DTRACEAGG_MAX, DT_ATTR_STABCMN, DT_VERS_1_0, 207 &dt_idops_func, "void(@)" }, 208 { "min", DT_IDENT_AGGFUNC, 0, DTRACEAGG_MIN, DT_ATTR_STABCMN, DT_VERS_1_0, 209 &dt_idops_func, "void(@)" }, 210 { "msgdsize", DT_IDENT_FUNC, 0, DIF_SUBR_MSGDSIZE, 211 DT_ATTR_STABCMN, DT_VERS_1_0, 212 &dt_idops_func, "size_t(mblk_t *)" }, 213 { "msgsize", DT_IDENT_FUNC, 0, DIF_SUBR_MSGSIZE, 214 DT_ATTR_STABCMN, DT_VERS_1_0, 215 &dt_idops_func, "size_t(mblk_t *)" }, 216 { "mutex_owned", DT_IDENT_FUNC, 0, DIF_SUBR_MUTEX_OWNED, 217 DT_ATTR_EVOLCMN, DT_VERS_1_0, 218 &dt_idops_func, "int(genunix`kmutex_t *)" }, 219 { "mutex_owner", DT_IDENT_FUNC, 0, DIF_SUBR_MUTEX_OWNER, 220 DT_ATTR_EVOLCMN, DT_VERS_1_0, 221 &dt_idops_func, "genunix`kthread_t *(genunix`kmutex_t *)" }, 222 { "mutex_type_adaptive", DT_IDENT_FUNC, 0, DIF_SUBR_MUTEX_TYPE_ADAPTIVE, 223 DT_ATTR_EVOLCMN, DT_VERS_1_0, 224 &dt_idops_func, "int(genunix`kmutex_t *)" }, 225 { "mutex_type_spin", DT_IDENT_FUNC, 0, DIF_SUBR_MUTEX_TYPE_SPIN, 226 DT_ATTR_EVOLCMN, DT_VERS_1_0, 227 &dt_idops_func, "int(genunix`kmutex_t *)" }, 228 { "normalize", DT_IDENT_ACTFUNC, 0, DT_ACT_NORMALIZE, DT_ATTR_STABCMN, 229 DT_VERS_1_0, &dt_idops_func, "void(...)" }, 230 { "panic", DT_IDENT_ACTFUNC, 0, DT_ACT_PANIC, DT_ATTR_STABCMN, DT_VERS_1_0, 231 &dt_idops_func, "void()" }, 232 { "pid", DT_IDENT_SCALAR, 0, DIF_VAR_PID, DT_ATTR_STABCMN, DT_VERS_1_0, 233 &dt_idops_type, "pid_t" }, 234 { "printa", DT_IDENT_ACTFUNC, 0, DT_ACT_PRINTA, DT_ATTR_STABCMN, DT_VERS_1_0, 235 &dt_idops_func, "void(@, ...)" }, 236 { "printf", DT_IDENT_ACTFUNC, 0, DT_ACT_PRINTF, DT_ATTR_STABCMN, DT_VERS_1_0, 237 &dt_idops_func, "void(@, ...)" }, 238 { "probefunc", DT_IDENT_SCALAR, 0, DIF_VAR_PROBEFUNC, 239 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" }, 240 { "probemod", DT_IDENT_SCALAR, 0, DIF_VAR_PROBEMOD, 241 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" }, 242 { "probename", DT_IDENT_SCALAR, 0, DIF_VAR_PROBENAME, 243 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" }, 244 { "probeprov", DT_IDENT_SCALAR, 0, DIF_VAR_PROBEPROV, 245 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" }, 246 { "progenyof", DT_IDENT_FUNC, 0, DIF_SUBR_PROGENYOF, 247 DT_ATTR_STABCMN, DT_VERS_1_0, 248 &dt_idops_func, "int(pid_t)" }, 249 { "quantize", DT_IDENT_AGGFUNC, 0, DTRACEAGG_QUANTIZE, 250 DT_ATTR_STABCMN, DT_VERS_1_0, 251 &dt_idops_func, "void(@)" }, 252 { "raise", DT_IDENT_ACTFUNC, 0, DT_ACT_RAISE, DT_ATTR_STABCMN, DT_VERS_1_0, 253 &dt_idops_func, "void(int)" }, 254 { "rand", DT_IDENT_FUNC, 0, DIF_SUBR_RAND, DT_ATTR_STABCMN, DT_VERS_1_0, 255 &dt_idops_func, "int()" }, 256 { "rindex", DT_IDENT_FUNC, 0, DIF_SUBR_RINDEX, DT_ATTR_STABCMN, DT_VERS_1_1, 257 &dt_idops_func, "int(const char *, const char *, [int])" }, 258 { "rw_iswriter", DT_IDENT_FUNC, 0, DIF_SUBR_RW_ISWRITER, 259 DT_ATTR_EVOLCMN, DT_VERS_1_0, 260 &dt_idops_func, "int(genunix`krwlock_t *)" }, 261 { "rw_read_held", DT_IDENT_FUNC, 0, DIF_SUBR_RW_READ_HELD, 262 DT_ATTR_EVOLCMN, DT_VERS_1_0, 263 &dt_idops_func, "int(genunix`krwlock_t *)" }, 264 { "rw_write_held", DT_IDENT_FUNC, 0, DIF_SUBR_RW_WRITE_HELD, 265 DT_ATTR_EVOLCMN, DT_VERS_1_0, 266 &dt_idops_func, "int(genunix`krwlock_t *)" }, 267 { "self", DT_IDENT_PTR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0, 268 &dt_idops_type, "void" }, 269 { "speculate", DT_IDENT_ACTFUNC, 0, DT_ACT_SPECULATE, 270 DT_ATTR_STABCMN, DT_VERS_1_0, 271 &dt_idops_func, "void(int)" }, 272 { "speculation", DT_IDENT_FUNC, 0, DIF_SUBR_SPECULATION, 273 DT_ATTR_STABCMN, DT_VERS_1_0, 274 &dt_idops_func, "int()" }, 275 { "stack", DT_IDENT_ACTFUNC, 0, DT_ACT_STACK, DT_ATTR_STABCMN, DT_VERS_1_0, 276 &dt_idops_func, "stack(...)" }, 277 { "stackdepth", DT_IDENT_SCALAR, 0, DIF_VAR_STACKDEPTH, 278 DT_ATTR_STABCMN, DT_VERS_1_0, 279 &dt_idops_type, "uint32_t" }, 280 { "stop", DT_IDENT_ACTFUNC, 0, DT_ACT_STOP, DT_ATTR_STABCMN, DT_VERS_1_0, 281 &dt_idops_func, "void()" }, 282 { "strchr", DT_IDENT_FUNC, 0, DIF_SUBR_STRCHR, DT_ATTR_STABCMN, DT_VERS_1_1, 283 &dt_idops_func, "string(const char *, char)" }, 284 { "strlen", DT_IDENT_FUNC, 0, DIF_SUBR_STRLEN, DT_ATTR_STABCMN, DT_VERS_1_0, 285 &dt_idops_func, "size_t(const char *)" }, 286 { "strjoin", DT_IDENT_FUNC, 0, DIF_SUBR_STRJOIN, DT_ATTR_STABCMN, DT_VERS_1_0, 287 &dt_idops_func, "string(const char *, const char *)" }, 288 { "strrchr", DT_IDENT_FUNC, 0, DIF_SUBR_STRRCHR, DT_ATTR_STABCMN, DT_VERS_1_1, 289 &dt_idops_func, "string(const char *, char)" }, 290 { "strstr", DT_IDENT_FUNC, 0, DIF_SUBR_STRSTR, DT_ATTR_STABCMN, DT_VERS_1_1, 291 &dt_idops_func, "string(const char *, const char *)" }, 292 { "strtok", DT_IDENT_FUNC, 0, DIF_SUBR_STRTOK, DT_ATTR_STABCMN, DT_VERS_1_1, 293 &dt_idops_func, "string(const char *, const char *)" }, 294 { "substr", DT_IDENT_FUNC, 0, DIF_SUBR_SUBSTR, DT_ATTR_STABCMN, DT_VERS_1_1, 295 &dt_idops_func, "string(const char *, int, [int])" }, 296 { "sum", DT_IDENT_AGGFUNC, 0, DTRACEAGG_SUM, DT_ATTR_STABCMN, DT_VERS_1_0, 297 &dt_idops_func, "void(@)" }, 298 { "system", DT_IDENT_ACTFUNC, 0, DT_ACT_SYSTEM, DT_ATTR_STABCMN, DT_VERS_1_0, 299 &dt_idops_func, "void(@, ...)" }, 300 { "this", DT_IDENT_PTR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0, 301 &dt_idops_type, "void" }, 302 { "tid", DT_IDENT_SCALAR, 0, DIF_VAR_TID, DT_ATTR_STABCMN, DT_VERS_1_0, 303 &dt_idops_type, "id_t" }, 304 { "timestamp", DT_IDENT_SCALAR, 0, DIF_VAR_TIMESTAMP, 305 DT_ATTR_STABCMN, DT_VERS_1_0, 306 &dt_idops_type, "uint64_t" }, 307 { "trace", DT_IDENT_ACTFUNC, 0, DT_ACT_TRACE, DT_ATTR_STABCMN, DT_VERS_1_0, 308 &dt_idops_func, "void(@)" }, 309 { "tracemem", DT_IDENT_ACTFUNC, 0, DT_ACT_TRACEMEM, 310 DT_ATTR_STABCMN, DT_VERS_1_0, 311 &dt_idops_func, "void(@, size_t)" }, 312 { "trunc", DT_IDENT_ACTFUNC, 0, DT_ACT_TRUNC, DT_ATTR_STABCMN, 313 DT_VERS_1_0, &dt_idops_func, "void(...)" }, 314 { "uregs", DT_IDENT_ARRAY, 0, DIF_VAR_UREGS, DT_ATTR_STABCMN, DT_VERS_1_0, 315 &dt_idops_regs, NULL }, 316 { "ustack", DT_IDENT_ACTFUNC, 0, DT_ACT_USTACK, DT_ATTR_STABCMN, DT_VERS_1_0, 317 &dt_idops_func, "stack(...)" }, 318 { "vtimestamp", DT_IDENT_SCALAR, 0, DIF_VAR_VTIMESTAMP, 319 DT_ATTR_STABCMN, DT_VERS_1_0, 320 &dt_idops_type, "uint64_t" }, 321 { "walltimestamp", DT_IDENT_SCALAR, 0, DIF_VAR_WALLTIMESTAMP, 322 DT_ATTR_STABCMN, DT_VERS_1_0, 323 &dt_idops_type, "uint64_t" }, 324 { "zonename", DT_IDENT_SCALAR, 0, DIF_VAR_ZONENAME, 325 DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" }, 326 { NULL, 0, 0, 0, { 0, 0, 0 }, 0, NULL, NULL } 327 }; 328 329 /* 330 * Tables of ILP32 intrinsic integer and floating-point type templates to use 331 * to populate the dynamic "C" CTF type container. 332 */ 333 static const dt_intrinsic_t _dtrace_intrinsics_32[] = { 334 { "void", { CTF_INT_SIGNED, 0, 0 }, CTF_K_INTEGER }, 335 { "signed", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 336 { "unsigned", { 0, 0, 32 }, CTF_K_INTEGER }, 337 { "char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 338 { "short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER }, 339 { "int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 340 { "long", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 341 { "long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 342 { "signed char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 343 { "signed short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER }, 344 { "signed int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 345 { "signed long", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 346 { "signed long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 347 { "unsigned char", { CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 348 { "unsigned short", { 0, 0, 16 }, CTF_K_INTEGER }, 349 { "unsigned int", { 0, 0, 32 }, CTF_K_INTEGER }, 350 { "unsigned long", { 0, 0, 32 }, CTF_K_INTEGER }, 351 { "unsigned long long", { 0, 0, 64 }, CTF_K_INTEGER }, 352 { "_Bool", { CTF_INT_BOOL, 0, 8 }, CTF_K_INTEGER }, 353 { "float", { CTF_FP_SINGLE, 0, 32 }, CTF_K_FLOAT }, 354 { "double", { CTF_FP_DOUBLE, 0, 64 }, CTF_K_FLOAT }, 355 { "long double", { CTF_FP_LDOUBLE, 0, 128 }, CTF_K_FLOAT }, 356 { "float imaginary", { CTF_FP_IMAGRY, 0, 32 }, CTF_K_FLOAT }, 357 { "double imaginary", { CTF_FP_DIMAGRY, 0, 64 }, CTF_K_FLOAT }, 358 { "long double imaginary", { CTF_FP_LDIMAGRY, 0, 128 }, CTF_K_FLOAT }, 359 { "float complex", { CTF_FP_CPLX, 0, 64 }, CTF_K_FLOAT }, 360 { "double complex", { CTF_FP_DCPLX, 0, 128 }, CTF_K_FLOAT }, 361 { "long double complex", { CTF_FP_LDCPLX, 0, 256 }, CTF_K_FLOAT }, 362 { NULL, { 0, 0, 0 }, 0 } 363 }; 364 365 /* 366 * Tables of LP64 intrinsic integer and floating-point type templates to use 367 * to populate the dynamic "C" CTF type container. 368 */ 369 static const dt_intrinsic_t _dtrace_intrinsics_64[] = { 370 { "void", { CTF_INT_SIGNED, 0, 0 }, CTF_K_INTEGER }, 371 { "signed", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 372 { "unsigned", { 0, 0, 32 }, CTF_K_INTEGER }, 373 { "char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 374 { "short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER }, 375 { "int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 376 { "long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 377 { "long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 378 { "signed char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 379 { "signed short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER }, 380 { "signed int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 381 { "signed long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 382 { "signed long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 383 { "unsigned char", { CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 384 { "unsigned short", { 0, 0, 16 }, CTF_K_INTEGER }, 385 { "unsigned int", { 0, 0, 32 }, CTF_K_INTEGER }, 386 { "unsigned long", { 0, 0, 64 }, CTF_K_INTEGER }, 387 { "unsigned long long", { 0, 0, 64 }, CTF_K_INTEGER }, 388 { "_Bool", { CTF_INT_BOOL, 0, 8 }, CTF_K_INTEGER }, 389 { "float", { CTF_FP_SINGLE, 0, 32 }, CTF_K_FLOAT }, 390 { "double", { CTF_FP_DOUBLE, 0, 64 }, CTF_K_FLOAT }, 391 { "long double", { CTF_FP_LDOUBLE, 0, 128 }, CTF_K_FLOAT }, 392 { "float imaginary", { CTF_FP_IMAGRY, 0, 32 }, CTF_K_FLOAT }, 393 { "double imaginary", { CTF_FP_DIMAGRY, 0, 64 }, CTF_K_FLOAT }, 394 { "long double imaginary", { CTF_FP_LDIMAGRY, 0, 128 }, CTF_K_FLOAT }, 395 { "float complex", { CTF_FP_CPLX, 0, 64 }, CTF_K_FLOAT }, 396 { "double complex", { CTF_FP_DCPLX, 0, 128 }, CTF_K_FLOAT }, 397 { "long double complex", { CTF_FP_LDCPLX, 0, 256 }, CTF_K_FLOAT }, 398 { NULL, { 0, 0, 0 }, 0 } 399 }; 400 401 /* 402 * Tables of ILP32 typedefs to use to populate the dynamic "D" CTF container. 403 * These aliases ensure that D definitions can use typical <sys/types.h> names. 404 */ 405 static const dt_typedef_t _dtrace_typedefs_32[] = { 406 { "char", "int8_t" }, 407 { "short", "int16_t" }, 408 { "int", "int32_t" }, 409 { "long long", "int64_t" }, 410 { "int", "intptr_t" }, 411 { "int", "ssize_t" }, 412 { "unsigned char", "uint8_t" }, 413 { "unsigned short", "uint16_t" }, 414 { "unsigned", "uint32_t" }, 415 { "unsigned long long", "uint64_t" }, 416 { "unsigned char", "uchar_t" }, 417 { "unsigned short", "ushort_t" }, 418 { "unsigned", "uint_t" }, 419 { "unsigned long", "ulong_t" }, 420 { "unsigned long long", "u_longlong_t" }, 421 { "int", "ptrdiff_t" }, 422 { "unsigned", "uintptr_t" }, 423 { "unsigned", "size_t" }, 424 { "long", "id_t" }, 425 { "long", "pid_t" }, 426 { NULL, NULL } 427 }; 428 429 /* 430 * Tables of LP64 typedefs to use to populate the dynamic "D" CTF container. 431 * These aliases ensure that D definitions can use typical <sys/types.h> names. 432 */ 433 static const dt_typedef_t _dtrace_typedefs_64[] = { 434 { "char", "int8_t" }, 435 { "short", "int16_t" }, 436 { "int", "int32_t" }, 437 { "long", "int64_t" }, 438 { "long", "intptr_t" }, 439 { "long", "ssize_t" }, 440 { "unsigned char", "uint8_t" }, 441 { "unsigned short", "uint16_t" }, 442 { "unsigned", "uint32_t" }, 443 { "unsigned long", "uint64_t" }, 444 { "unsigned char", "uchar_t" }, 445 { "unsigned short", "ushort_t" }, 446 { "unsigned", "uint_t" }, 447 { "unsigned long", "ulong_t" }, 448 { "unsigned long long", "u_longlong_t" }, 449 { "long", "ptrdiff_t" }, 450 { "unsigned long", "uintptr_t" }, 451 { "unsigned long", "size_t" }, 452 { "int", "id_t" }, 453 { "int", "pid_t" }, 454 { NULL, NULL } 455 }; 456 457 /* 458 * Tables of ILP32 integer type templates used to populate the dtp->dt_ints[] 459 * cache when a new dtrace client open occurs. Values are set by dtrace_open(). 460 */ 461 static const dt_intdesc_t _dtrace_ints_32[] = { 462 { "int", NULL, CTF_ERR, 0x7fffffffULL }, 463 { "unsigned int", NULL, CTF_ERR, 0xffffffffULL }, 464 { "long", NULL, CTF_ERR, 0x7fffffffULL }, 465 { "unsigned long", NULL, CTF_ERR, 0xffffffffULL }, 466 { "long long", NULL, CTF_ERR, 0x7fffffffffffffffULL }, 467 { "unsigned long long", NULL, CTF_ERR, 0xffffffffffffffffULL } 468 }; 469 470 /* 471 * Tables of LP64 integer type templates used to populate the dtp->dt_ints[] 472 * cache when a new dtrace client open occurs. Values are set by dtrace_open(). 473 */ 474 static const dt_intdesc_t _dtrace_ints_64[] = { 475 { "int", NULL, CTF_ERR, 0x7fffffffULL }, 476 { "unsigned int", NULL, CTF_ERR, 0xffffffffULL }, 477 { "long", NULL, CTF_ERR, 0x7fffffffffffffffULL }, 478 { "unsigned long", NULL, CTF_ERR, 0xffffffffffffffffULL }, 479 { "long long", NULL, CTF_ERR, 0x7fffffffffffffffULL }, 480 { "unsigned long long", NULL, CTF_ERR, 0xffffffffffffffffULL } 481 }; 482 483 /* 484 * Table of macro variable templates used to populate the macro identifier hash 485 * when a new dtrace client open occurs. Values are set by dtrace_update(). 486 */ 487 static const dt_ident_t _dtrace_macros[] = { 488 { "egid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 489 { "euid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 490 { "gid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 491 { "pid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 492 { "pgid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 493 { "ppid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 494 { "projid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 495 { "sid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 496 { "taskid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 497 { "target", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 498 { "uid", DT_IDENT_SCALAR, 0, 0, DT_ATTR_STABCMN, DT_VERS_1_0 }, 499 { NULL, 0, 0, 0, { 0, 0, 0 }, 0 } 500 }; 501 502 /* 503 * Hard-wired definition string to be compiled and cached every time a new 504 * DTrace library handle is initialized. This string should only be used to 505 * contain definitions that should be present regardless of DTRACE_O_NOLIBS. 506 */ 507 static const char _dtrace_hardwire[] = "\ 508 inline long NULL = 0; \n\ 509 #pragma D binding \"1.0\" NULL\n\ 510 "; 511 512 /* 513 * Default DTrace configuration to use when opening libdtrace DTRACE_O_NODEV. 514 * If DTRACE_O_NODEV is not set, we load the configuration from the kernel. 515 * The use of CTF_MODEL_NATIVE is more subtle than it might appear: we are 516 * relying on the fact that when running dtrace(1M), isaexec will invoke the 517 * binary with the same bitness as the kernel, which is what we want by default 518 * when generating our DIF. The user can override the choice using oflags. 519 */ 520 static const dtrace_conf_t _dtrace_conf = { 521 DIF_VERSION, /* dtc_difversion */ 522 DIF_DIR_NREGS, /* dtc_difintregs */ 523 DIF_DTR_NREGS, /* dtc_diftupregs */ 524 CTF_MODEL_NATIVE /* dtc_ctfmodel */ 525 }; 526 527 const dtrace_attribute_t _dtrace_maxattr = { 528 DTRACE_STABILITY_MAX, 529 DTRACE_STABILITY_MAX, 530 DTRACE_CLASS_MAX 531 }; 532 533 const dtrace_attribute_t _dtrace_defattr = { 534 DTRACE_STABILITY_STABLE, 535 DTRACE_STABILITY_STABLE, 536 DTRACE_CLASS_COMMON 537 }; 538 539 const dtrace_attribute_t _dtrace_symattr = { 540 DTRACE_STABILITY_PRIVATE, 541 DTRACE_STABILITY_PRIVATE, 542 DTRACE_CLASS_UNKNOWN 543 }; 544 545 const dtrace_attribute_t _dtrace_typattr = { 546 DTRACE_STABILITY_PRIVATE, 547 DTRACE_STABILITY_PRIVATE, 548 DTRACE_CLASS_UNKNOWN 549 }; 550 551 const dtrace_attribute_t _dtrace_prvattr = { 552 DTRACE_STABILITY_PRIVATE, 553 DTRACE_STABILITY_PRIVATE, 554 DTRACE_CLASS_UNKNOWN 555 }; 556 557 const dtrace_pattr_t _dtrace_prvdesc = { 558 { DTRACE_STABILITY_UNSTABLE, DTRACE_STABILITY_UNSTABLE, DTRACE_CLASS_COMMON }, 559 { DTRACE_STABILITY_UNSTABLE, DTRACE_STABILITY_UNSTABLE, DTRACE_CLASS_COMMON }, 560 { DTRACE_STABILITY_UNSTABLE, DTRACE_STABILITY_UNSTABLE, DTRACE_CLASS_COMMON }, 561 { DTRACE_STABILITY_UNSTABLE, DTRACE_STABILITY_UNSTABLE, DTRACE_CLASS_COMMON }, 562 { DTRACE_STABILITY_UNSTABLE, DTRACE_STABILITY_UNSTABLE, DTRACE_CLASS_COMMON }, 563 }; 564 565 const char *_dtrace_defcpp = "/usr/ccs/lib/cpp"; /* default cpp(1) to invoke */ 566 const char *_dtrace_defld = "/usr/ccs/bin/ld"; /* default ld(1) to invoke */ 567 568 const char *_dtrace_libdir = "/usr/lib/dtrace"; /* default library directory */ 569 const char *_dtrace_moddir = "dtrace"; /* kernel module directory */ 570 571 int _dtrace_strbuckets = 211; /* default number of hash buckets (prime) */ 572 int _dtrace_intbuckets = 256; /* default number of integer buckets (Pof2) */ 573 uint_t _dtrace_strsize = 256; /* default size of string intrinsic type */ 574 uint_t _dtrace_stkindent = 14; /* default whitespace indent for stack/ustack */ 575 uint_t _dtrace_pidbuckets = 64; /* default number of pid hash buckets */ 576 uint_t _dtrace_pidlrulim = 8; /* default number of pid handles to cache */ 577 size_t _dtrace_bufsize = 512; /* default dt_buf_create() size */ 578 int _dtrace_argmax = 32; /* default maximum number of probe arguments */ 579 580 int _dtrace_debug = 0; /* debug messages enabled (off) */ 581 const char *const _dtrace_version = DT_VERS_STRING; /* API version string */ 582 int _dtrace_rdvers = RD_VERSION; /* rtld_db feature version */ 583 584 typedef struct dt_fdlist { 585 int *df_fds; /* array of provider driver file descriptors */ 586 uint_t df_ents; /* number of valid elements in df_fds[] */ 587 uint_t df_size; /* size of df_fds[] */ 588 } dt_fdlist_t; 589 590 #pragma init(_dtrace_init) 591 void 592 _dtrace_init(void) 593 { 594 _dtrace_debug = getenv("DTRACE_DEBUG") != NULL; 595 596 for (; _dtrace_rdvers > 0; _dtrace_rdvers--) { 597 if (rd_init(_dtrace_rdvers) == RD_OK) 598 break; 599 } 600 } 601 602 static dtrace_hdl_t * 603 set_open_errno(dtrace_hdl_t *dtp, int *errp, int err) 604 { 605 if (dtp != NULL) 606 dtrace_close(dtp); 607 if (errp != NULL) 608 *errp = err; 609 return (NULL); 610 } 611 612 static void 613 dt_provmod_open(dt_provmod_t **provmod, dt_fdlist_t *dfp, const char *dirname, 614 const char *subdir, const char *isadir) 615 { 616 dt_provmod_t *prov; 617 char path[PATH_MAX]; 618 struct dirent *dp, *ep; 619 DIR *dirp; 620 int fd; 621 622 if (isadir) { 623 (void) snprintf(path, sizeof (path), "%s/%s/%s", 624 dirname, subdir, isadir); 625 } else { 626 (void) snprintf(path, sizeof (path), "%s/%s", 627 dirname, subdir); 628 } 629 630 if ((dirp = opendir(path)) == NULL) 631 return; /* failed to open directory; just skip it */ 632 633 ep = alloca(sizeof (struct dirent) + PATH_MAX + 1); 634 bzero(ep, sizeof (struct dirent) + PATH_MAX + 1); 635 636 while (readdir_r(dirp, ep, &dp) == 0 && dp != NULL) { 637 if (dp->d_name[0] == '.') 638 continue; /* skip "." and ".." */ 639 640 if (dfp->df_ents == dfp->df_size) { 641 uint_t size = dfp->df_size ? dfp->df_size * 2 : 16; 642 int *fds = realloc(dfp->df_fds, size * sizeof (int)); 643 644 if (fds == NULL) 645 break; /* skip the rest of this directory */ 646 647 dfp->df_fds = fds; 648 dfp->df_size = size; 649 } 650 651 (void) snprintf(path, sizeof (path), 652 "/devices/pseudo/%s@0:%s", dp->d_name, dp->d_name); 653 654 if ((fd = open(path, O_RDONLY)) == -1) 655 continue; /* failed to open driver; just skip it */ 656 657 if (((prov = malloc(sizeof (dt_provmod_t))) == NULL) || 658 (prov->dp_name = malloc(strlen(dp->d_name) + 1)) == NULL) { 659 free(prov); 660 (void) close(fd); 661 break; 662 } 663 664 (void) strcpy(prov->dp_name, dp->d_name); 665 prov->dp_next = *provmod; 666 *provmod = prov; 667 668 dt_dprintf("opened provider %s\n", dp->d_name); 669 dfp->df_fds[dfp->df_ents++] = fd; 670 } 671 672 (void) closedir(dirp); 673 } 674 675 static void 676 dt_provmod_destroy(dt_provmod_t **provmod) 677 { 678 dt_provmod_t *next, *current; 679 680 for (current = *provmod; current != NULL; current = next) { 681 next = current->dp_next; 682 free(current->dp_name); 683 free(current); 684 } 685 686 *provmod = NULL; 687 } 688 689 static const char * 690 dt_get_sysinfo(int cmd, char *buf, size_t len) 691 { 692 ssize_t rv = sysinfo(cmd, buf, len); 693 char *p = buf; 694 695 if (rv < 0 || rv > len) 696 (void) snprintf(buf, len, "%s", "Unknown"); 697 698 while ((p = strchr(p, '.')) != NULL) 699 *p++ = '_'; 700 701 return (buf); 702 } 703 704 static dtrace_hdl_t * 705 dt_vopen(int version, int flags, int *errp, 706 const dtrace_vector_t *vector, void *arg) 707 { 708 dtrace_hdl_t *dtp = NULL; 709 int dtfd = -1, ftfd = -1, fterr = 0; 710 dtrace_prog_t *pgp; 711 dt_module_t *dmp; 712 dt_provmod_t *provmod = NULL; 713 int i, err; 714 715 const dt_intrinsic_t *dinp; 716 const dt_typedef_t *dtyp; 717 const dt_ident_t *idp; 718 719 dtrace_typeinfo_t dtt; 720 ctf_funcinfo_t ctc; 721 ctf_arinfo_t ctr; 722 723 dt_fdlist_t df = { NULL, 0, 0 }; 724 char *p, *q, *path = NULL; 725 const char *isadir = NULL; 726 int pathlen; 727 728 char isadef[32], utsdef[32]; 729 char s1[64], s2[64]; 730 731 if (version <= 0) 732 return (set_open_errno(dtp, errp, EINVAL)); 733 734 if (version > DTRACE_VERSION) 735 return (set_open_errno(dtp, errp, EDT_VERSION)); 736 737 if (flags & ~DTRACE_O_MASK) 738 return (set_open_errno(dtp, errp, EINVAL)); 739 740 if ((flags & DTRACE_O_LP64) && (flags & DTRACE_O_ILP32)) 741 return (set_open_errno(dtp, errp, EINVAL)); 742 743 if (vector == NULL && arg != NULL) 744 return (set_open_errno(dtp, errp, EINVAL)); 745 746 if (elf_version(EV_CURRENT) == EV_NONE) 747 return (set_open_errno(dtp, errp, EDT_ELFVERSION)); 748 749 if (vector != NULL || (flags & DTRACE_O_NODEV)) 750 goto alloc; /* do not attempt to open dtrace device */ 751 752 /* 753 * For each directory in the kernel's module path, build the name of 754 * the corresponding dtrace provider subdirectory and attempt to open a 755 * pseudo-driver whose name matches the name of each provider therein. 756 * We hold them open in the df.df_fds list until we open the DTrace 757 * driver itself, allowing us to see all of the probes provided on this 758 * system. Once we have the DTrace driver open, we can safely close 759 * all the providers now that they have registered with the framework. 760 */ 761 if (sysinfo(SI_ISALIST, isadef, sizeof (isadef)) > 0) { 762 if (strstr(isadef, "sparcv9") != NULL) 763 isadir = "sparcv9"; 764 else if (strstr(isadef, "amd64") != NULL) 765 isadir = "amd64"; 766 } 767 768 if (modctl(MODGETPATHLEN, NULL, &pathlen) == 0 && 769 (path = malloc(pathlen + 1)) != NULL && 770 modctl(MODGETPATH, NULL, path) == 0) { 771 for (p = path; *p != '\0'; p = q) { 772 if ((q = strchr(p, ' ')) != NULL) 773 *q++ = '\0'; 774 else 775 q = p + strlen(p); 776 dt_provmod_open(&provmod, &df, p, 777 _dtrace_moddir, isadir); 778 } 779 } 780 781 dtfd = open("/devices/pseudo/dtrace@0:dtrace", O_RDWR); 782 err = errno; /* save errno from opening dtfd */ 783 784 ftfd = open("/devices/pseudo/fasttrap@0:fasttrap", O_RDWR); 785 fterr = ftfd == -1 ? errno : 0; /* save errno from open ftfd */ 786 787 while (df.df_ents-- != 0) 788 (void) close(df.df_fds[df.df_ents]); 789 790 free(df.df_fds); 791 free(path); 792 793 /* 794 * If we failed to open the dtrace device, fail dtrace_open(). 795 * We convert some kernel errnos to custom libdtrace errnos to 796 * improve the resulting message from the usual strerror(). 797 */ 798 if (dtfd == -1) { 799 dt_provmod_destroy(&provmod); 800 switch (err) { 801 case ENOENT: 802 if (getzoneid() != GLOBAL_ZONEID) 803 err = EDT_ZNOENT; 804 else 805 err = EDT_GNOENT; 806 break; 807 case EBUSY: 808 err = EDT_BUSY; 809 break; 810 case EACCES: 811 err = EDT_ACCESS; 812 break; 813 } 814 return (set_open_errno(dtp, errp, err)); 815 } 816 817 (void) fcntl(dtfd, F_SETFD, FD_CLOEXEC); 818 (void) fcntl(ftfd, F_SETFD, FD_CLOEXEC); 819 820 alloc: 821 if ((dtp = malloc(sizeof (dtrace_hdl_t))) == NULL) 822 return (set_open_errno(dtp, errp, EDT_NOMEM)); 823 824 bzero(dtp, sizeof (dtrace_hdl_t)); 825 dtp->dt_oflags = flags; 826 dtp->dt_prcmode = DT_PROC_STOP_PREINIT; 827 dtp->dt_linkmode = DT_LINK_KERNEL; 828 dtp->dt_linktype = DT_LTYP_ELF; 829 dtp->dt_stdcmode = DT_STDC_XA; 830 dtp->dt_version = version; 831 dtp->dt_fd = dtfd; 832 dtp->dt_ftfd = ftfd; 833 dtp->dt_fterr = fterr; 834 dtp->dt_cdefs_fd = -1; 835 dtp->dt_ddefs_fd = -1; 836 dtp->dt_stdout_fd = -1; 837 dtp->dt_modbuckets = _dtrace_strbuckets; 838 dtp->dt_mods = calloc(dtp->dt_modbuckets, sizeof (dt_module_t *)); 839 dtp->dt_provbuckets = _dtrace_strbuckets; 840 dtp->dt_provs = calloc(dtp->dt_provbuckets, sizeof (dt_provider_t *)); 841 dt_proc_hash_create(dtp); 842 dtp->dt_vmax = DT_VERS_LATEST; 843 dtp->dt_cpp_path = strdup(_dtrace_defcpp); 844 dtp->dt_cpp_argv = malloc(sizeof (char *)); 845 dtp->dt_cpp_argc = 1; 846 dtp->dt_cpp_args = 1; 847 dtp->dt_ld_path = strdup(_dtrace_defld); 848 dtp->dt_provmod = provmod; 849 dtp->dt_vector = vector; 850 dtp->dt_varg = arg; 851 dt_dof_init(dtp); 852 (void) uname(&dtp->dt_uts); 853 854 if (dtp->dt_mods == NULL || dtp->dt_provs == NULL || 855 dtp->dt_procs == NULL || dtp->dt_ld_path == NULL || 856 dtp->dt_cpp_path == NULL || dtp->dt_cpp_argv == NULL) 857 return (set_open_errno(dtp, errp, EDT_NOMEM)); 858 859 for (i = 0; i < DTRACEOPT_MAX; i++) 860 dtp->dt_options[i] = DTRACEOPT_UNSET; 861 862 dtp->dt_cpp_argv[0] = (char *)strbasename(dtp->dt_cpp_path); 863 864 (void) snprintf(isadef, sizeof (isadef), "-D__SUNW_D_%u", 865 (uint_t)(sizeof (void *) * NBBY)); 866 867 (void) snprintf(utsdef, sizeof (utsdef), "-D__%s_%s", 868 dt_get_sysinfo(SI_SYSNAME, s1, sizeof (s1)), 869 dt_get_sysinfo(SI_RELEASE, s2, sizeof (s2))); 870 871 if (dt_cpp_add_arg(dtp, "-D__sun") == NULL || 872 dt_cpp_add_arg(dtp, "-D__unix") == NULL || 873 dt_cpp_add_arg(dtp, "-D__SVR4") == NULL || 874 dt_cpp_add_arg(dtp, "-D__SUNW_D=1") == NULL || 875 dt_cpp_add_arg(dtp, isadef) == NULL || 876 dt_cpp_add_arg(dtp, utsdef) == NULL) 877 return (set_open_errno(dtp, errp, EDT_NOMEM)); 878 879 if (flags & DTRACE_O_NODEV) 880 bcopy(&_dtrace_conf, &dtp->dt_conf, sizeof (_dtrace_conf)); 881 else if (dt_ioctl(dtp, DTRACEIOC_CONF, &dtp->dt_conf) != 0) 882 return (set_open_errno(dtp, errp, errno)); 883 884 if (flags & DTRACE_O_LP64) 885 dtp->dt_conf.dtc_ctfmodel = CTF_MODEL_LP64; 886 else if (flags & DTRACE_O_ILP32) 887 dtp->dt_conf.dtc_ctfmodel = CTF_MODEL_ILP32; 888 889 #ifdef __sparc 890 /* 891 * On SPARC systems, __sparc is always defined for <sys/isa_defs.h> 892 * and __sparcv9 is defined if we are doing a 64-bit compile. 893 */ 894 if (dt_cpp_add_arg(dtp, "-D__sparc") == NULL) 895 return (set_open_errno(dtp, errp, EDT_NOMEM)); 896 897 if (dtp->dt_conf.dtc_ctfmodel == CTF_MODEL_LP64 && 898 dt_cpp_add_arg(dtp, "-D__sparcv9") == NULL) 899 return (set_open_errno(dtp, errp, EDT_NOMEM)); 900 #endif 901 902 #ifdef __x86 903 /* 904 * On x86 systems, __i386 is defined for <sys/isa_defs.h> for 32-bit 905 * compiles and __amd64 is defined for 64-bit compiles. Unlike SPARC, 906 * they are defined exclusive of one another (see PSARC 2004/619). 907 */ 908 if (dtp->dt_conf.dtc_ctfmodel == CTF_MODEL_LP64) 909 p = dt_cpp_add_arg(dtp, "-D__amd64"); 910 else 911 p = dt_cpp_add_arg(dtp, "-D__i386"); 912 913 if (p == NULL) 914 return (set_open_errno(dtp, errp, EDT_NOMEM)); 915 #endif 916 917 if (dtp->dt_conf.dtc_difversion < DIF_VERSION) 918 return (set_open_errno(dtp, errp, EDT_DIFVERS)); 919 920 if (dtp->dt_conf.dtc_ctfmodel == CTF_MODEL_ILP32) 921 bcopy(_dtrace_ints_32, dtp->dt_ints, sizeof (_dtrace_ints_32)); 922 else 923 bcopy(_dtrace_ints_64, dtp->dt_ints, sizeof (_dtrace_ints_64)); 924 925 dtp->dt_macros = dt_idhash_create("macro", NULL, 0, UINT_MAX); 926 dtp->dt_aggs = dt_idhash_create("aggregation", NULL, 0, UINT_MAX); 927 928 dtp->dt_globals = dt_idhash_create("global", _dtrace_globals, 929 DIF_VAR_OTHER_UBASE, DIF_VAR_OTHER_MAX); 930 931 dtp->dt_tls = dt_idhash_create("thread local", NULL, 932 DIF_VAR_OTHER_UBASE, DIF_VAR_OTHER_MAX); 933 934 if (dtp->dt_macros == NULL || dtp->dt_aggs == NULL || 935 dtp->dt_globals == NULL || dtp->dt_tls == NULL) 936 return (set_open_errno(dtp, errp, EDT_NOMEM)); 937 938 /* 939 * Populate the dt_macros identifier hash table by hand: we can't use 940 * the dt_idhash_populate() mechanism because we're not yet compiling 941 * and dtrace_update() needs to immediately reference these idents. 942 */ 943 for (idp = _dtrace_macros; idp->di_name != NULL; idp++) { 944 if (dt_idhash_insert(dtp->dt_macros, idp->di_name, 945 idp->di_kind, idp->di_flags, idp->di_id, idp->di_attr, 946 idp->di_vers, idp->di_ops ? idp->di_ops : &dt_idops_thaw, 947 idp->di_iarg, 0) == NULL) 948 return (set_open_errno(dtp, errp, EDT_NOMEM)); 949 } 950 951 /* 952 * Update the module list using /system/object and load the values for 953 * the macro variable definitions according to the current process. 954 */ 955 dtrace_update(dtp); 956 957 /* 958 * Select the intrinsics and typedefs we want based on the data model. 959 * The intrinsics are under "C". The typedefs are added under "D". 960 */ 961 if (dtp->dt_conf.dtc_ctfmodel == CTF_MODEL_ILP32) { 962 dinp = _dtrace_intrinsics_32; 963 dtyp = _dtrace_typedefs_32; 964 } else { 965 dinp = _dtrace_intrinsics_64; 966 dtyp = _dtrace_typedefs_64; 967 } 968 969 /* 970 * Create a dynamic CTF container under the "C" scope for intrinsic 971 * types and types defined in ANSI-C header files that are included. 972 */ 973 if ((dmp = dtp->dt_cdefs = dt_module_create(dtp, "C")) == NULL) 974 return (set_open_errno(dtp, errp, EDT_NOMEM)); 975 976 if ((dmp->dm_ctfp = ctf_create(&dtp->dt_ctferr)) == NULL) 977 return (set_open_errno(dtp, errp, EDT_CTF)); 978 979 dt_dprintf("created CTF container for %s (%p)\n", 980 dmp->dm_name, (void *)dmp->dm_ctfp); 981 982 (void) ctf_setmodel(dmp->dm_ctfp, dtp->dt_conf.dtc_ctfmodel); 983 ctf_setspecific(dmp->dm_ctfp, dmp); 984 985 dmp->dm_flags = DT_DM_LOADED; /* fake up loaded bit */ 986 dmp->dm_modid = -1; /* no module ID */ 987 988 /* 989 * Fill the dynamic "C" CTF container with all of the intrinsic 990 * integer and floating-point types appropriate for this data model. 991 */ 992 for (; dinp->din_name != NULL; dinp++) { 993 if (dinp->din_kind == CTF_K_INTEGER) { 994 err = ctf_add_integer(dmp->dm_ctfp, CTF_ADD_ROOT, 995 dinp->din_name, &dinp->din_data); 996 } else { 997 err = ctf_add_float(dmp->dm_ctfp, CTF_ADD_ROOT, 998 dinp->din_name, &dinp->din_data); 999 } 1000 1001 if (err == CTF_ERR) { 1002 dt_dprintf("failed to add %s to C container: %s\n", 1003 dinp->din_name, ctf_errmsg( 1004 ctf_errno(dmp->dm_ctfp))); 1005 return (set_open_errno(dtp, errp, EDT_CTF)); 1006 } 1007 } 1008 1009 if (ctf_update(dmp->dm_ctfp) != 0) { 1010 dt_dprintf("failed to update C container: %s\n", 1011 ctf_errmsg(ctf_errno(dmp->dm_ctfp))); 1012 return (set_open_errno(dtp, errp, EDT_CTF)); 1013 } 1014 1015 /* 1016 * Add intrinsic pointer types that are needed to initialize printf 1017 * format dictionary types (see table in dt_printf.c). 1018 */ 1019 (void) ctf_add_pointer(dmp->dm_ctfp, CTF_ADD_ROOT, 1020 ctf_lookup_by_name(dmp->dm_ctfp, "void")); 1021 1022 (void) ctf_add_pointer(dmp->dm_ctfp, CTF_ADD_ROOT, 1023 ctf_lookup_by_name(dmp->dm_ctfp, "char")); 1024 1025 (void) ctf_add_pointer(dmp->dm_ctfp, CTF_ADD_ROOT, 1026 ctf_lookup_by_name(dmp->dm_ctfp, "int")); 1027 1028 if (ctf_update(dmp->dm_ctfp) != 0) { 1029 dt_dprintf("failed to update C container: %s\n", 1030 ctf_errmsg(ctf_errno(dmp->dm_ctfp))); 1031 return (set_open_errno(dtp, errp, EDT_CTF)); 1032 } 1033 1034 /* 1035 * Create a dynamic CTF container under the "D" scope for types that 1036 * are defined by the D program itself or on-the-fly by the D compiler. 1037 * The "D" CTF container is a child of the "C" CTF container. 1038 */ 1039 if ((dmp = dtp->dt_ddefs = dt_module_create(dtp, "D")) == NULL) 1040 return (set_open_errno(dtp, errp, EDT_NOMEM)); 1041 1042 if ((dmp->dm_ctfp = ctf_create(&dtp->dt_ctferr)) == NULL) 1043 return (set_open_errno(dtp, errp, EDT_CTF)); 1044 1045 dt_dprintf("created CTF container for %s (%p)\n", 1046 dmp->dm_name, (void *)dmp->dm_ctfp); 1047 1048 (void) ctf_setmodel(dmp->dm_ctfp, dtp->dt_conf.dtc_ctfmodel); 1049 ctf_setspecific(dmp->dm_ctfp, dmp); 1050 1051 dmp->dm_flags = DT_DM_LOADED; /* fake up loaded bit */ 1052 dmp->dm_modid = -1; /* no module ID */ 1053 1054 if (ctf_import(dmp->dm_ctfp, dtp->dt_cdefs->dm_ctfp) == CTF_ERR) { 1055 dt_dprintf("failed to import D parent container: %s\n", 1056 ctf_errmsg(ctf_errno(dmp->dm_ctfp))); 1057 return (set_open_errno(dtp, errp, EDT_CTF)); 1058 } 1059 1060 /* 1061 * Fill the dynamic "D" CTF container with all of the built-in typedefs 1062 * that we need to use for our D variable and function definitions. 1063 * This ensures that basic inttypes.h names are always available to us. 1064 */ 1065 for (; dtyp->dty_src != NULL; dtyp++) { 1066 if (ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT, 1067 dtyp->dty_dst, ctf_lookup_by_name(dmp->dm_ctfp, 1068 dtyp->dty_src)) == CTF_ERR) { 1069 dt_dprintf("failed to add typedef %s %s to D " 1070 "container: %s", dtyp->dty_src, dtyp->dty_dst, 1071 ctf_errmsg(ctf_errno(dmp->dm_ctfp))); 1072 return (set_open_errno(dtp, errp, EDT_CTF)); 1073 } 1074 } 1075 1076 /* 1077 * Insert a CTF ID corresponding to a pointer to a type of kind 1078 * CTF_K_FUNCTION we can use in the compiler for function pointers. 1079 * CTF treats all function pointers as "int (*)()" so we only need one. 1080 */ 1081 ctc.ctc_return = ctf_lookup_by_name(dmp->dm_ctfp, "int"); 1082 ctc.ctc_argc = 0; 1083 ctc.ctc_flags = 0; 1084 1085 dtp->dt_type_func = ctf_add_function(dmp->dm_ctfp, 1086 CTF_ADD_ROOT, &ctc, NULL); 1087 1088 dtp->dt_type_fptr = ctf_add_pointer(dmp->dm_ctfp, 1089 CTF_ADD_ROOT, dtp->dt_type_func); 1090 1091 /* 1092 * We also insert CTF definitions for the special D intrinsic types 1093 * string and <DYN> into the D container. The string type is added 1094 * as a typedef of char[n]. The <DYN> type is an alias for void. 1095 * We compare types to these special CTF ids throughout the compiler. 1096 */ 1097 ctr.ctr_contents = ctf_lookup_by_name(dmp->dm_ctfp, "char"); 1098 ctr.ctr_index = ctf_lookup_by_name(dmp->dm_ctfp, "long"); 1099 ctr.ctr_nelems = _dtrace_strsize; 1100 1101 dtp->dt_type_str = ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT, 1102 "string", ctf_add_array(dmp->dm_ctfp, CTF_ADD_ROOT, &ctr)); 1103 1104 dtp->dt_type_dyn = ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT, 1105 "<DYN>", ctf_lookup_by_name(dmp->dm_ctfp, "void")); 1106 1107 dtp->dt_type_stack = ctf_add_typedef(dmp->dm_ctfp, CTF_ADD_ROOT, 1108 "stack", ctf_lookup_by_name(dmp->dm_ctfp, "void")); 1109 1110 if (dtp->dt_type_func == CTF_ERR || dtp->dt_type_fptr == CTF_ERR || 1111 dtp->dt_type_str == CTF_ERR || dtp->dt_type_dyn == CTF_ERR || 1112 dtp->dt_type_stack == CTF_ERR) { 1113 dt_dprintf("failed to add intrinsic to D container: %s\n", 1114 ctf_errmsg(ctf_errno(dmp->dm_ctfp))); 1115 return (set_open_errno(dtp, errp, EDT_CTF)); 1116 } 1117 1118 if (ctf_update(dmp->dm_ctfp) != 0) { 1119 dt_dprintf("failed update D container: %s\n", 1120 ctf_errmsg(ctf_errno(dmp->dm_ctfp))); 1121 return (set_open_errno(dtp, errp, EDT_CTF)); 1122 } 1123 1124 /* 1125 * Initialize the integer description table used to convert integer 1126 * constants to the appropriate types. Refer to the comments above 1127 * dt_node_int() for a complete description of how this table is used. 1128 */ 1129 for (i = 0; i < sizeof (dtp->dt_ints) / sizeof (dtp->dt_ints[0]); i++) { 1130 if (dtrace_lookup_by_type(dtp, DTRACE_OBJ_EVERY, 1131 dtp->dt_ints[i].did_name, &dtt) != 0) { 1132 dt_dprintf("failed to lookup integer type %s: %s\n", 1133 dtp->dt_ints[i].did_name, 1134 dtrace_errmsg(dtp, dtrace_errno(dtp))); 1135 return (set_open_errno(dtp, errp, dtp->dt_errno)); 1136 } 1137 dtp->dt_ints[i].did_ctfp = dtt.dtt_ctfp; 1138 dtp->dt_ints[i].did_type = dtt.dtt_type; 1139 } 1140 1141 /* 1142 * Now that we've created the "C" and "D" containers, move them to the 1143 * start of the module list so that these types and symbols are found 1144 * first (for stability) when iterating through the module list. 1145 */ 1146 dt_list_delete(&dtp->dt_modlist, dtp->dt_ddefs); 1147 dt_list_prepend(&dtp->dt_modlist, dtp->dt_ddefs); 1148 1149 dt_list_delete(&dtp->dt_modlist, dtp->dt_cdefs); 1150 dt_list_prepend(&dtp->dt_modlist, dtp->dt_cdefs); 1151 1152 if (dt_pfdict_create(dtp) == -1) 1153 return (set_open_errno(dtp, errp, dtp->dt_errno)); 1154 1155 /* 1156 * If we are opening libdtrace DTRACE_O_NODEV enable C_ZDEFS by default 1157 * because without /dev/dtrace open, we will not be able to load the 1158 * names and attributes of any providers or probes from the kernel. 1159 */ 1160 if (flags & DTRACE_O_NODEV) 1161 dtp->dt_cflags |= DTRACE_C_ZDEFS; 1162 1163 /* 1164 * Load hard-wired inlines into the definition cache by calling the 1165 * compiler on the raw definition string defined above. 1166 */ 1167 if ((pgp = dtrace_program_strcompile(dtp, _dtrace_hardwire, 1168 DTRACE_PROBESPEC_NONE, DTRACE_C_EMPTY, 0, NULL)) == NULL) { 1169 dt_dprintf("failed to load hard-wired definitions: %s\n", 1170 dtrace_errmsg(dtp, dtrace_errno(dtp))); 1171 return (set_open_errno(dtp, errp, EDT_HARDWIRE)); 1172 } 1173 1174 dtrace_program_destroy(dtp, pgp); 1175 1176 /* 1177 * Set up the default DTrace library path. Once set, the next call to 1178 * dt_compile() will compile all the libraries. We intentionally defer 1179 * library processing to improve overhead for clients that don't ever 1180 * compile, and to provide better error reporting (because the full 1181 * reporting of compiler errors requires dtrace_open() to succeed). 1182 */ 1183 if (dtrace_setopt(dtp, "libdir", _dtrace_libdir) != 0) 1184 return (set_open_errno(dtp, errp, dtp->dt_errno)); 1185 1186 return (dtp); 1187 } 1188 1189 dtrace_hdl_t * 1190 dtrace_open(int version, int flags, int *errp) 1191 { 1192 return (dt_vopen(version, flags, errp, NULL, NULL)); 1193 } 1194 1195 dtrace_hdl_t * 1196 dtrace_vopen(int version, int flags, int *errp, 1197 const dtrace_vector_t *vector, void *arg) 1198 { 1199 return (dt_vopen(version, flags, errp, vector, arg)); 1200 } 1201 1202 void 1203 dtrace_close(dtrace_hdl_t *dtp) 1204 { 1205 dt_ident_t *idp, *ndp; 1206 dt_module_t *dmp; 1207 dt_provider_t *pvp; 1208 dtrace_prog_t *pgp; 1209 dt_xlator_t *dxp; 1210 dt_dirpath_t *dirp; 1211 int i; 1212 1213 while ((pgp = dt_list_next(&dtp->dt_programs)) != NULL) 1214 dtrace_program_destroy(dtp, pgp); 1215 1216 while ((dxp = dt_list_next(&dtp->dt_xlators)) != NULL) 1217 dt_xlator_destroy(dtp, dxp); 1218 1219 for (idp = dtp->dt_externs; idp != NULL; idp = ndp) { 1220 ndp = idp->di_next; 1221 dt_ident_destroy(idp); 1222 } 1223 1224 if (dtp->dt_macros != NULL) 1225 dt_idhash_destroy(dtp->dt_macros); 1226 if (dtp->dt_aggs != NULL) 1227 dt_idhash_destroy(dtp->dt_aggs); 1228 if (dtp->dt_globals != NULL) 1229 dt_idhash_destroy(dtp->dt_globals); 1230 if (dtp->dt_tls != NULL) 1231 dt_idhash_destroy(dtp->dt_tls); 1232 1233 while ((dmp = dt_list_next(&dtp->dt_modlist)) != NULL) 1234 dt_module_destroy(dtp, dmp); 1235 1236 while ((pvp = dt_list_next(&dtp->dt_provlist)) != NULL) 1237 dt_provider_destroy(dtp, pvp); 1238 1239 if (dtp->dt_procs != NULL) 1240 dt_proc_hash_destroy(dtp); 1241 1242 if (dtp->dt_fd != -1) 1243 (void) close(dtp->dt_fd); 1244 if (dtp->dt_ftfd != -1) 1245 (void) close(dtp->dt_ftfd); 1246 if (dtp->dt_cdefs_fd != -1) 1247 (void) close(dtp->dt_cdefs_fd); 1248 if (dtp->dt_ddefs_fd != -1) 1249 (void) close(dtp->dt_ddefs_fd); 1250 if (dtp->dt_stdout_fd != -1) 1251 (void) close(dtp->dt_stdout_fd); 1252 1253 dt_epid_destroy(dtp); 1254 dt_aggid_destroy(dtp); 1255 dt_format_destroy(dtp); 1256 dt_buffered_destroy(dtp); 1257 dt_aggregate_destroy(dtp); 1258 free(dtp->dt_buf.dtbd_data); 1259 dt_pfdict_destroy(dtp); 1260 dt_provmod_destroy(&dtp->dt_provmod); 1261 dt_dof_fini(dtp); 1262 1263 for (i = 1; i < dtp->dt_cpp_argc; i++) 1264 free(dtp->dt_cpp_argv[i]); 1265 1266 while ((dirp = dt_list_next(&dtp->dt_lib_path)) != NULL) { 1267 dt_list_delete(&dtp->dt_lib_path, dirp); 1268 free(dirp->dir_path); 1269 free(dirp); 1270 } 1271 1272 free(dtp->dt_cpp_argv); 1273 free(dtp->dt_cpp_path); 1274 free(dtp->dt_ld_path); 1275 1276 free(dtp->dt_mods); 1277 free(dtp->dt_provs); 1278 free(dtp); 1279 } 1280 1281 int 1282 dtrace_go(dtrace_hdl_t *dtp) 1283 { 1284 void *dof; 1285 int err; 1286 1287 if (dtp->dt_active) 1288 return (dt_set_errno(dtp, EINVAL)); 1289 1290 /* 1291 * If a dtrace:::ERROR program and callback are registered, enable the 1292 * program before we start tracing. If this fails for a vector open 1293 * with ENOTTY, we permit dtrace_go() to succeed so that vector clients 1294 * such as mdb's dtrace module can execute the rest of dtrace_go() even 1295 * though they do not provide support for the DTRACEIOC_ENABLE ioctl. 1296 */ 1297 if (dtp->dt_errprog != NULL && 1298 dtrace_program_exec(dtp, dtp->dt_errprog, NULL) == -1 && ( 1299 dtp->dt_errno != ENOTTY || dtp->dt_vector == NULL)) 1300 return (-1); /* dt_errno has been set for us */ 1301 1302 if ((dof = dtrace_getopt_dof(dtp)) == NULL) 1303 return (-1); /* dt_errno has been set for us */ 1304 1305 err = dt_ioctl(dtp, DTRACEIOC_ENABLE, dof); 1306 dtrace_dof_destroy(dtp, dof); 1307 1308 if (err == -1 && (errno != ENOTTY || dtp->dt_vector == NULL)) 1309 return (dt_set_errno(dtp, errno)); 1310 1311 if (dt_ioctl(dtp, DTRACEIOC_GO, &dtp->dt_beganon) == -1) { 1312 if (errno == EACCES) 1313 return (dt_set_errno(dtp, EDT_DESTRUCTIVE)); 1314 1315 if (errno == EALREADY) 1316 return (dt_set_errno(dtp, EDT_ISANON)); 1317 1318 if (errno == ENOENT) 1319 return (dt_set_errno(dtp, EDT_NOANON)); 1320 1321 if (errno == E2BIG) 1322 return (dt_set_errno(dtp, EDT_ENDTOOBIG)); 1323 1324 if (errno == ENOSPC) 1325 return (dt_set_errno(dtp, EDT_BUFTOOSMALL)); 1326 1327 return (dt_set_errno(dtp, errno)); 1328 } 1329 1330 dtp->dt_active = 1; 1331 1332 if (dt_options_load(dtp) == -1) 1333 return (dt_set_errno(dtp, errno)); 1334 1335 return (dt_aggregate_go(dtp)); 1336 } 1337 1338 int 1339 dtrace_stop(dtrace_hdl_t *dtp) 1340 { 1341 if (dtp->dt_stopped) 1342 return (0); 1343 1344 if (dt_ioctl(dtp, DTRACEIOC_STOP, &dtp->dt_endedon) == -1) 1345 return (dt_set_errno(dtp, errno)); 1346 1347 dtp->dt_stopped = 1; 1348 1349 return (0); 1350 } 1351 1352 int 1353 dtrace_provider_modules(dtrace_hdl_t *dtp, const char **mods, int nmods) 1354 { 1355 dt_provmod_t *prov; 1356 int i = 0; 1357 1358 for (prov = dtp->dt_provmod; prov != NULL; prov = prov->dp_next, i++) { 1359 if (i < nmods) 1360 mods[i] = prov->dp_name; 1361 } 1362 1363 return (i); 1364 } 1365 1366 int 1367 dtrace_ctlfd(dtrace_hdl_t *dtp) 1368 { 1369 return (dtp->dt_fd); 1370 } 1371