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-rw-r--r--lib/libdtrace/common/dt_error.c235
1 files changed, 235 insertions, 0 deletions
diff --git a/lib/libdtrace/common/dt_error.c b/lib/libdtrace/common/dt_error.c
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+++ b/lib/libdtrace/common/dt_error.c
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+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident "%Z%%M% %I% %E% SMI"
+
+#include <string.h>
+#include <strings.h>
+#include <dt_impl.h>
+
+static const struct {
+ int err;
+ const char *msg;
+} _dt_errlist[] = {
+ { EDT_VERSION, "Client requested version newer than library" },
+ { EDT_VERSINVAL, "Version is not properly formatted or is too large" },
+ { EDT_VERSUNDEF, "Requested version is not supported by compiler" },
+ { EDT_VERSREDUCED, "Requested version conflicts with earlier setting" },
+ { EDT_CTF, "Unexpected libctf error" },
+ { EDT_COMPILER, "Error in D program compilation" },
+ { EDT_NOREG, "Insufficient registers to generate code" },
+ { EDT_NOTUPREG, "Insufficient tuple registers to generate code" },
+ { EDT_NOMEM, "Memory allocation failure" },
+ { EDT_INT2BIG, "Integer constant table limit exceeded" },
+ { EDT_STR2BIG, "String constant table limit exceeded" },
+ { EDT_NOMOD, "Unknown module name" },
+ { EDT_NOPROV, "Unknown provider name" },
+ { EDT_NOPROBE, "No probe matches description" },
+ { EDT_NOSYM, "Unknown symbol name" },
+ { EDT_NOSYMADDR, "No symbol corresponds to address" },
+ { EDT_NOTYPE, "Unknown type name" },
+ { EDT_NOVAR, "Unknown variable name" },
+ { EDT_NOAGG, "Unknown aggregation name" },
+ { EDT_BADSCOPE, "Improper use of scoping operator in type name" },
+ { EDT_BADSPEC, "Overspecified probe description" },
+ { EDT_BADSPCV, "Undefined macro variable in probe description" },
+ { EDT_BADID, "Unknown probe identifier" },
+ { EDT_NOTLOADED, "Module is no longer loaded" },
+ { EDT_NOCTF, "Module does not contain any CTF data" },
+ { EDT_DATAMODEL, "Module and program data models do not match" },
+ { EDT_DIFVERS, "Library uses newer DIF version than kernel" },
+ { EDT_BADAGG, "Unknown aggregating action" },
+ { EDT_FIO, "Error occurred while reading from input stream" },
+ { EDT_DIFINVAL, "DIF program content is invalid" },
+ { EDT_DIFSIZE, "DIF program exceeds maximum program size" },
+ { EDT_DIFFAULT, "DIF program contains invalid pointer" },
+ { EDT_BADPROBE, "Invalid probe specification" },
+ { EDT_BADPGLOB, "Probe description has too many globbing characters" },
+ { EDT_NOSCOPE, "Declaration scope stack underflow" },
+ { EDT_NODECL, "Declaration stack underflow" },
+ { EDT_DMISMATCH, "Data record list does not match statement" },
+ { EDT_DOFFSET, "Data record offset exceeds buffer boundary" },
+ { EDT_DALIGN, "Data record has inappropriate alignment" },
+ { EDT_BADOPTNAME, "Invalid option name" },
+ { EDT_BADOPTVAL, "Invalid value for specified option" },
+ { EDT_BADOPTCTX, "Option cannot be used from within a D program" },
+ { EDT_CPPFORK, "Failed to fork preprocessor" },
+ { EDT_CPPEXEC, "Failed to exec preprocessor" },
+ { EDT_CPPENT, "Preprocessor not found" },
+ { EDT_CPPERR, "Preprocessor failed to process input program" },
+ { EDT_SYMOFLOW, "Symbol table identifier space exhausted" },
+ { EDT_ACTIVE, "Operation illegal when tracing is active" },
+ { EDT_DESTRUCTIVE, "Destructive actions not allowed" },
+ { EDT_NOANON, "No anonymous tracing state" },
+ { EDT_ISANON, "Can't claim anonymous state and enable probes" },
+ { EDT_ENDTOOBIG, "END enablings exceed size of principal buffer" },
+ { EDT_NOCONV, "Failed to load type for printf conversion" },
+ { EDT_BADCONV, "Incomplete printf conversion" },
+ { EDT_BADERROR, "Invalid library ERROR action" },
+ { EDT_ERRABORT, "Abort due to error" },
+ { EDT_DROPABORT, "Abort due to drop" },
+ { EDT_DIRABORT, "Abort explicitly directed" },
+ { EDT_BADRVAL, "Invalid return value from callback" },
+ { EDT_BADNORMAL, "Invalid normalization" },
+ { EDT_BUFTOOSMALL, "Enabling exceeds size of buffer" },
+ { EDT_BADTRUNC, "Invalid truncation" },
+ { EDT_BUSY, "DTrace cannot be used when kernel debugger is active" },
+ { EDT_ACCESS, "DTrace requires additional privileges" },
+ { EDT_NOENT, "DTrace device not available on system" },
+ { EDT_BRICKED, "Abort due to systemic unresponsiveness" },
+ { EDT_HARDWIRE, "Failed to load language definitions" },
+ { EDT_ELFVERSION, "libelf is out-of-date with respect to libdtrace" },
+ { EDT_NOBUFFERED, "Attempt to buffer output without handler" },
+ { EDT_UNSTABLE, "Description matched an unstable set of probes" },
+ { EDT_BADSETOPT, "Invalid setopt() library action" },
+ { EDT_BADSTACKPC, "Invalid stack program counter size" },
+ { EDT_BADAGGVAR, "Invalid aggregation variable identifier" },
+ { EDT_OVERSION, "Client requested deprecated version of library" }
+};
+
+static const int _dt_nerr = sizeof (_dt_errlist) / sizeof (_dt_errlist[0]);
+
+const char *
+dtrace_errmsg(dtrace_hdl_t *dtp, int error)
+{
+ const char *str;
+ int i;
+
+ if (error == EDT_COMPILER && dtp != NULL && dtp->dt_errmsg[0] != '\0')
+ str = dtp->dt_errmsg;
+ else if (error == EDT_CTF && dtp != NULL && dtp->dt_ctferr != 0)
+ str = ctf_errmsg(dtp->dt_ctferr);
+ else if (error >= EDT_BASE && (error - EDT_BASE) < _dt_nerr) {
+ for (i = 0; i < _dt_nerr; i++) {
+ if (_dt_errlist[i].err == error)
+ return (_dt_errlist[i].msg);
+ }
+ str = NULL;
+ } else
+ str = strerror(error);
+
+ return (str ? str : "Unknown error");
+}
+
+int
+dtrace_errno(dtrace_hdl_t *dtp)
+{
+ return (dtp->dt_errno);
+}
+
+#if defined(sun)
+int
+dt_set_errno(dtrace_hdl_t *dtp, int err)
+{
+ dtp->dt_errno = err;
+ return (-1);
+}
+#else
+int
+_dt_set_errno(dtrace_hdl_t *dtp, int err, const char *errfile, int errline)
+{
+ dtp->dt_errno = err;
+ dtp->dt_errfile = errfile;
+ dtp->dt_errline = errline;
+ return (-1);
+}
+
+void dt_get_errloc(dtrace_hdl_t *dtp, const char **p_errfile, int *p_errline)
+{
+ *p_errfile = dtp->dt_errfile;
+ *p_errline = dtp->dt_errline;
+}
+#endif
+
+void
+dt_set_errmsg(dtrace_hdl_t *dtp, const char *errtag, const char *region,
+ const char *filename, int lineno, const char *format, va_list ap)
+{
+ size_t len, n;
+ char *p, *s;
+
+ s = dtp->dt_errmsg;
+ n = sizeof (dtp->dt_errmsg);
+
+ if (errtag != NULL && (yypcb->pcb_cflags & DTRACE_C_ETAGS))
+ (void) snprintf(s, n, "[%s] ", errtag);
+ else
+ s[0] = '\0';
+
+ len = strlen(dtp->dt_errmsg);
+ s = dtp->dt_errmsg + len;
+ n = sizeof (dtp->dt_errmsg) - len;
+
+ if (filename == NULL)
+ filename = dtp->dt_filetag;
+
+ if (filename != NULL)
+ (void) snprintf(s, n, "\"%s\", line %d: ", filename, lineno);
+ else if (lineno != 0)
+ (void) snprintf(s, n, "line %d: ", lineno);
+ else if (region != NULL)
+ (void) snprintf(s, n, "in %s: ", region);
+
+ len = strlen(dtp->dt_errmsg);
+ s = dtp->dt_errmsg + len;
+ n = sizeof (dtp->dt_errmsg) - len;
+ (void) vsnprintf(s, n, format, ap);
+
+ if ((p = strrchr(dtp->dt_errmsg, '\n')) != NULL)
+ *p = '\0'; /* remove trailing \n from message buffer */
+
+ dtp->dt_errtag = errtag;
+}
+
+/*ARGSUSED*/
+const char *
+dtrace_faultstr(dtrace_hdl_t *dtp, int fault)
+{
+ int i;
+
+ static const struct {
+ int code;
+ const char *str;
+ } faults[] = {
+ { DTRACEFLT_BADADDR, "invalid address" },
+ { DTRACEFLT_BADALIGN, "invalid alignment" },
+ { DTRACEFLT_ILLOP, "illegal operation" },
+ { DTRACEFLT_DIVZERO, "divide-by-zero" },
+ { DTRACEFLT_NOSCRATCH, "out of scratch space" },
+ { DTRACEFLT_KPRIV, "invalid kernel access" },
+ { DTRACEFLT_UPRIV, "invalid user access" },
+ { DTRACEFLT_TUPOFLOW, "tuple stack overflow" },
+ { DTRACEFLT_BADSTACK, "bad stack" },
+ { DTRACEFLT_LIBRARY, "library-level fault" },
+ { 0, NULL }
+ };
+
+ for (i = 0; faults[i].str != NULL; i++) {
+ if (faults[i].code == fault)
+ return (faults[i].str);
+ }
+
+ return ("unknown fault");
+}