1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate #include <strings.h> 30*0Sstevel@tonic-gate #include <dt_impl.h> 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate static const struct { 33*0Sstevel@tonic-gate int err; 34*0Sstevel@tonic-gate const char *msg; 35*0Sstevel@tonic-gate } _dt_errlist[] = { 36*0Sstevel@tonic-gate { EDT_VERSION, "Client requested version newer than library" }, 37*0Sstevel@tonic-gate { EDT_VERSINVAL, "Version is not properly formatted or is too large" }, 38*0Sstevel@tonic-gate { EDT_VERSUNDEF, "Requested version is not supported by compiler" }, 39*0Sstevel@tonic-gate { EDT_VERSREDUCED, "Requested version conflicts with earlier setting" }, 40*0Sstevel@tonic-gate { EDT_CTF, "Unexpected libctf error" }, 41*0Sstevel@tonic-gate { EDT_COMPILER, "Error in D program compilation" }, 42*0Sstevel@tonic-gate { EDT_NOREG, "Insufficient registers to generate code" }, 43*0Sstevel@tonic-gate { EDT_NOTUPREG, "Insufficient tuple registers to generate code" }, 44*0Sstevel@tonic-gate { EDT_NOMEM, "Memory allocation failure" }, 45*0Sstevel@tonic-gate { EDT_INT2BIG, "Integer constant table limit exceeded" }, 46*0Sstevel@tonic-gate { EDT_STR2BIG, "String constant table limit exceeded" }, 47*0Sstevel@tonic-gate { EDT_NOMOD, "Unknown module name" }, 48*0Sstevel@tonic-gate { EDT_NOPROV, "Unknown provider name" }, 49*0Sstevel@tonic-gate { EDT_NOPROBE, "No probe matches description" }, 50*0Sstevel@tonic-gate { EDT_NOSYM, "Unknown symbol name" }, 51*0Sstevel@tonic-gate { EDT_NOSYMADDR, "No symbol corresponds to address" }, 52*0Sstevel@tonic-gate { EDT_NOTYPE, "Unknown type name" }, 53*0Sstevel@tonic-gate { EDT_NOVAR, "Unknown variable name" }, 54*0Sstevel@tonic-gate { EDT_NOAGG, "Unknown aggregation name" }, 55*0Sstevel@tonic-gate { EDT_BADSCOPE, "Improper use of scoping operator in type name" }, 56*0Sstevel@tonic-gate { EDT_BADSPEC, "Overspecified probe description" }, 57*0Sstevel@tonic-gate { EDT_BADSPCV, "Undefined macro variable in probe description" }, 58*0Sstevel@tonic-gate { EDT_BADID, "Unknown probe identifier" }, 59*0Sstevel@tonic-gate { EDT_NOTLOADED, "Module is no longer loaded" }, 60*0Sstevel@tonic-gate { EDT_NOCTF, "Module does not contain any CTF data" }, 61*0Sstevel@tonic-gate { EDT_DATAMODEL, "Module and program data models do not match" }, 62*0Sstevel@tonic-gate { EDT_DIFVERS, "Library uses newer DIF version than kernel" }, 63*0Sstevel@tonic-gate { EDT_BADAGG, "Unknown aggregating action" }, 64*0Sstevel@tonic-gate { EDT_FIO, "Error occurred while reading from input stream" }, 65*0Sstevel@tonic-gate { EDT_DIFINVAL, "DIF program content is invalid" }, 66*0Sstevel@tonic-gate { EDT_DIFSIZE, "DIF program exceeds maximum program size" }, 67*0Sstevel@tonic-gate { EDT_DIFFAULT, "DIF program contains invalid pointer" }, 68*0Sstevel@tonic-gate { EDT_BADPROBE, "Invalid probe specification" }, 69*0Sstevel@tonic-gate { EDT_BADPGLOB, "Probe description has too many globbing characters" }, 70*0Sstevel@tonic-gate { EDT_NOSCOPE, "Declaration scope stack underflow" }, 71*0Sstevel@tonic-gate { EDT_NODECL, "Declaration stack underflow" }, 72*0Sstevel@tonic-gate { EDT_DMISMATCH, "Data record list does not match statement" }, 73*0Sstevel@tonic-gate { EDT_DOFFSET, "Data record offset exceeds buffer boundary" }, 74*0Sstevel@tonic-gate { EDT_DALIGN, "Data record has inappropriate alignment" }, 75*0Sstevel@tonic-gate { EDT_BADOPTNAME, "Invalid option name" }, 76*0Sstevel@tonic-gate { EDT_BADOPTVAL, "Invalid value for specified option" }, 77*0Sstevel@tonic-gate { EDT_BADOPTCTX, "Option cannot be used from within a D program" }, 78*0Sstevel@tonic-gate { EDT_CPPFORK, "Failed to fork preprocessor" }, 79*0Sstevel@tonic-gate { EDT_CPPEXEC, "Failed to exec preprocessor" }, 80*0Sstevel@tonic-gate { EDT_CPPENT, "Preprocessor not found" }, 81*0Sstevel@tonic-gate { EDT_CPPERR, "Preprocessor failed to process input program" }, 82*0Sstevel@tonic-gate { EDT_SYMOFLOW, "Symbol table identifier space exhausted" }, 83*0Sstevel@tonic-gate { EDT_ACTIVE, "Operation illegal when tracing is active" }, 84*0Sstevel@tonic-gate { EDT_DESTRUCTIVE, "Destructive actions not allowed" }, 85*0Sstevel@tonic-gate { EDT_NOANON, "No anonymous tracing state" }, 86*0Sstevel@tonic-gate { EDT_ISANON, "Can't claim anonymous state and enable probes" }, 87*0Sstevel@tonic-gate { EDT_ENDTOOBIG, "END enablings exceed size of principal buffer" }, 88*0Sstevel@tonic-gate { EDT_NOCONV, "Failed to load type for printf conversion" }, 89*0Sstevel@tonic-gate { EDT_BADCONV, "Incomplete printf conversion" }, 90*0Sstevel@tonic-gate { EDT_BADERROR, "Invalid library ERROR action" }, 91*0Sstevel@tonic-gate { EDT_ERRABORT, "Abort due to error" }, 92*0Sstevel@tonic-gate { EDT_DROPABORT, "Abort due to drop" }, 93*0Sstevel@tonic-gate { EDT_DIRABORT, "Abort explicitly directed" }, 94*0Sstevel@tonic-gate { EDT_BADRVAL, "Invalid return value from callback" }, 95*0Sstevel@tonic-gate { EDT_BADNORMAL, "Invalid normalization" }, 96*0Sstevel@tonic-gate { EDT_BUFTOOSMALL, "Enabling exceeds size of buffer" }, 97*0Sstevel@tonic-gate { EDT_BADTRUNC, "Invalid truncation" }, 98*0Sstevel@tonic-gate { EDT_BUSY, "DTrace cannot be used when kernel debugger is active" }, 99*0Sstevel@tonic-gate { EDT_ACCESS, "DTrace requires additional privileges" }, 100*0Sstevel@tonic-gate { EDT_GNOENT, "DTrace device not available on system" }, 101*0Sstevel@tonic-gate { EDT_ZNOENT, "DTrace device not available in local zone" }, 102*0Sstevel@tonic-gate { EDT_BRICKED, "Abort due to systemic unresponsiveness" }, 103*0Sstevel@tonic-gate { EDT_HARDWIRE, "Failed to load language definitions" }, 104*0Sstevel@tonic-gate { EDT_ELFVERSION, "libelf is out-of-date with respect to libdtrace" }, 105*0Sstevel@tonic-gate { EDT_NOBUFFERED, "Attempt to buffer output without handler" }, 106*0Sstevel@tonic-gate { EDT_UNSTABLE, "Description matched an unstable set of probes" }, 107*0Sstevel@tonic-gate }; 108*0Sstevel@tonic-gate 109*0Sstevel@tonic-gate static const int _dt_nerr = sizeof (_dt_errlist) / sizeof (_dt_errlist[0]); 110*0Sstevel@tonic-gate 111*0Sstevel@tonic-gate const char * 112*0Sstevel@tonic-gate dtrace_errmsg(dtrace_hdl_t *dtp, int error) 113*0Sstevel@tonic-gate { 114*0Sstevel@tonic-gate const char *str; 115*0Sstevel@tonic-gate int i; 116*0Sstevel@tonic-gate 117*0Sstevel@tonic-gate if (error == EDT_COMPILER && dtp != NULL && dtp->dt_errmsg[0] != '\0') 118*0Sstevel@tonic-gate str = dtp->dt_errmsg; 119*0Sstevel@tonic-gate else if (error == EDT_CTF && dtp != NULL && dtp->dt_ctferr != 0) 120*0Sstevel@tonic-gate str = ctf_errmsg(dtp->dt_ctferr); 121*0Sstevel@tonic-gate else if (error >= EDT_BASE && (error - EDT_BASE) < _dt_nerr) { 122*0Sstevel@tonic-gate for (i = 0; i < _dt_nerr; i++) { 123*0Sstevel@tonic-gate if (_dt_errlist[i].err == error) 124*0Sstevel@tonic-gate return (_dt_errlist[i].msg); 125*0Sstevel@tonic-gate } 126*0Sstevel@tonic-gate str = NULL; 127*0Sstevel@tonic-gate } else 128*0Sstevel@tonic-gate str = strerror(error); 129*0Sstevel@tonic-gate 130*0Sstevel@tonic-gate return (str ? str : "Unknown error"); 131*0Sstevel@tonic-gate } 132*0Sstevel@tonic-gate 133*0Sstevel@tonic-gate int 134*0Sstevel@tonic-gate dtrace_errno(dtrace_hdl_t *dtp) 135*0Sstevel@tonic-gate { 136*0Sstevel@tonic-gate return (dtp->dt_errno); 137*0Sstevel@tonic-gate } 138*0Sstevel@tonic-gate 139*0Sstevel@tonic-gate int 140*0Sstevel@tonic-gate dt_set_errno(dtrace_hdl_t *dtp, int err) 141*0Sstevel@tonic-gate { 142*0Sstevel@tonic-gate dtp->dt_errno = err; 143*0Sstevel@tonic-gate return (-1); 144*0Sstevel@tonic-gate } 145*0Sstevel@tonic-gate 146*0Sstevel@tonic-gate void 147*0Sstevel@tonic-gate dt_set_errmsg(dtrace_hdl_t *dtp, const char *errtag, const char *region, 148*0Sstevel@tonic-gate const char *filename, int lineno, const char *format, va_list ap) 149*0Sstevel@tonic-gate { 150*0Sstevel@tonic-gate size_t len, n; 151*0Sstevel@tonic-gate char *p, *s; 152*0Sstevel@tonic-gate 153*0Sstevel@tonic-gate s = dtp->dt_errmsg; 154*0Sstevel@tonic-gate n = sizeof (dtp->dt_errmsg); 155*0Sstevel@tonic-gate 156*0Sstevel@tonic-gate if (errtag != NULL && (yypcb->pcb_cflags & DTRACE_C_ETAGS)) 157*0Sstevel@tonic-gate (void) snprintf(s, n, "[%s] ", errtag); 158*0Sstevel@tonic-gate else 159*0Sstevel@tonic-gate s[0] = '\0'; 160*0Sstevel@tonic-gate 161*0Sstevel@tonic-gate len = strlen(dtp->dt_errmsg); 162*0Sstevel@tonic-gate s = dtp->dt_errmsg + len; 163*0Sstevel@tonic-gate n = sizeof (dtp->dt_errmsg) - len; 164*0Sstevel@tonic-gate 165*0Sstevel@tonic-gate if (filename == NULL) 166*0Sstevel@tonic-gate filename = dtp->dt_filetag; 167*0Sstevel@tonic-gate 168*0Sstevel@tonic-gate if (filename != NULL) 169*0Sstevel@tonic-gate (void) snprintf(s, n, "\"%s\", line %d: ", filename, lineno); 170*0Sstevel@tonic-gate else if (lineno != 0) 171*0Sstevel@tonic-gate (void) snprintf(s, n, "line %d: ", lineno); 172*0Sstevel@tonic-gate else if (region != NULL) 173*0Sstevel@tonic-gate (void) snprintf(s, n, "in %s: ", region); 174*0Sstevel@tonic-gate 175*0Sstevel@tonic-gate len = strlen(dtp->dt_errmsg); 176*0Sstevel@tonic-gate s = dtp->dt_errmsg + len; 177*0Sstevel@tonic-gate n = sizeof (dtp->dt_errmsg) - len; 178*0Sstevel@tonic-gate (void) vsnprintf(s, n, format, ap); 179*0Sstevel@tonic-gate 180*0Sstevel@tonic-gate if ((p = strrchr(dtp->dt_errmsg, '\n')) != NULL) 181*0Sstevel@tonic-gate *p = '\0'; /* remove trailing \n from message buffer */ 182*0Sstevel@tonic-gate 183*0Sstevel@tonic-gate dtp->dt_errtag = errtag; 184*0Sstevel@tonic-gate } 185*0Sstevel@tonic-gate 186*0Sstevel@tonic-gate /*ARGSUSED*/ 187*0Sstevel@tonic-gate const char * 188*0Sstevel@tonic-gate dtrace_faultstr(dtrace_hdl_t *dtp, int fault) 189*0Sstevel@tonic-gate { 190*0Sstevel@tonic-gate int i; 191*0Sstevel@tonic-gate 192*0Sstevel@tonic-gate static const struct { 193*0Sstevel@tonic-gate int code; 194*0Sstevel@tonic-gate const char *str; 195*0Sstevel@tonic-gate } faults[] = { 196*0Sstevel@tonic-gate { DTRACEFLT_BADADDR, "invalid address" }, 197*0Sstevel@tonic-gate { DTRACEFLT_BADALIGN, "invalid alignment" }, 198*0Sstevel@tonic-gate { DTRACEFLT_ILLOP, "illegal operation" }, 199*0Sstevel@tonic-gate { DTRACEFLT_DIVZERO, "divide-by-zero" }, 200*0Sstevel@tonic-gate { DTRACEFLT_NOSCRATCH, "out of scratch space" }, 201*0Sstevel@tonic-gate { DTRACEFLT_KPRIV, "invalid kernel access" }, 202*0Sstevel@tonic-gate { DTRACEFLT_UPRIV, "invalid user access" }, 203*0Sstevel@tonic-gate { DTRACEFLT_TUPOFLOW, "tuple stack overflow" }, 204*0Sstevel@tonic-gate { DTRACEFLT_LIBRARY, "library-level fault" }, 205*0Sstevel@tonic-gate { 0, NULL } 206*0Sstevel@tonic-gate }; 207*0Sstevel@tonic-gate 208*0Sstevel@tonic-gate for (i = 0; faults[i].str != NULL; i++) { 209*0Sstevel@tonic-gate if (faults[i].code == fault) 210*0Sstevel@tonic-gate return (faults[i].str); 211*0Sstevel@tonic-gate } 212*0Sstevel@tonic-gate 213*0Sstevel@tonic-gate return ("unknown fault"); 214*0Sstevel@tonic-gate } 215