summaryrefslogtreecommitdiffstats
path: root/src/utils/abrt-backtrace.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/utils/abrt-backtrace.c')
-rw-r--r--src/utils/abrt-backtrace.c339
1 files changed, 0 insertions, 339 deletions
diff --git a/src/utils/abrt-backtrace.c b/src/utils/abrt-backtrace.c
deleted file mode 100644
index d02c9633..00000000
--- a/src/utils/abrt-backtrace.c
+++ /dev/null
@@ -1,339 +0,0 @@
-/*
- abrt-backtrace.c - parses command line arguments
-
- Copyright (C) 2009 RedHat inc.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-*/
-#include <argp.h>
-#include <stdlib.h>
-#include <sysexits.h>
-#include <string.h>
-#include "config.h"
-#include "backtrace.h"
-#include "strbuf.h"
-
-/* Too large files are trimmed. */
-#define FILE_SIZE_LIMIT 20000000 /* ~ 20 MB */
-
-#define EX_PARSINGFAILED EX__MAX + 1 /* = 79 */
-#define EX_THREADDETECTIONFAILED EX__MAX + 2 /* = 80 */
-
-const char *argp_program_version = "abrt-backtrace " VERSION;
-const char *argp_program_bug_address = "<crash-catcher@lists.fedorahosted.org>";
-
-static char doc[] = "abrt-backtrace -- backtrace analyzer";
-
-/* A description of the arguments we accept. */
-static char args_doc[] = "FILE";
-
-static struct argp_option options[] = {
- {"independent" , 'i', 0 , 0, "Prints independent backtrace (fallback)"},
- {"single-thread" , 'n', 0 , 0, "Display the crash thread only in the backtrace"},
- {"frame-depth" , 'd', "N", 0, "Display only top N frames under the crash frame"},
- {"remove-exit-handlers" , 'r', 0 , 0, "Removes exit handler frames from the displayed backtrace"},
- {"remove-noncrash-frames", 'm', 0 , 0, "Removes common frames known as not causing crash"},
- {"rate" , 'a', 0 , 0, "Prints the backtrace rating from 0 to 4"},
- {"crash-function" , 'c', 0 , 0, "Prints crash function"},
- {"debug-parser" , 'p', 0 , 0, "Prints parser debug information"},
- {"debug-scanner" , 's', 0 , 0, "Prints scanner debug information"},
- {"verbose" , 'v', 0 , 0, "Prints human-friendly superfluous output."},
- { 0 }
-};
-
-struct arguments
-{
- bool independent;
- bool single_thread;
- int frame_depth; /* negative == do not limit the depth */
- bool remove_exit_handlers;
- bool remove_noncrash_frames;
- bool debug_parser;
- bool debug_scanner;
- bool verbose;
- bool rate;
- bool crash_function;
- char *filename;
-};
-
-static error_t
-parse_opt (int key, char *arg, struct argp_state *state)
-{
- /* Get the input argument from argp_parse, which we
- know is a pointer to our arguments structure. */
- struct arguments *arguments = (struct arguments*)state->input;
-
- switch (key)
- {
- case 'i': arguments->independent = true; break;
- case 'n': arguments->single_thread = true; break;
- case 'd':
- if (1 != sscanf(arg, "%d", &arguments->frame_depth))
- {
- /* Must be a number. */
- argp_usage(state);
- exit(EX_USAGE); /* Invalid argument */
- }
- break;
- case 'r': arguments->remove_exit_handlers = true; break;
- case 'm': arguments->remove_noncrash_frames = true; break;
- case 'p': arguments->debug_parser = true; break;
- case 's': arguments->debug_scanner = true; break;
- case 'v': arguments->verbose = true; break;
- case 'a': arguments->rate = true; break;
- case 'c': arguments->crash_function = true; break;
-
- case ARGP_KEY_ARG:
- if (arguments->filename)
- {
- /* Too many arguments. */
- argp_usage(state);
- exit(EX_USAGE); /* Invalid argument */
- }
- arguments->filename = arg;
- break;
-
- case ARGP_KEY_END:
- break;
-
- default:
- return ARGP_ERR_UNKNOWN;
- }
- return 0;
-}
-
-/* Our argp parser. */
-static struct argp argp = { options, parse_opt, args_doc, doc };
-
-#define PYTHON_BACKTRACE_ID1 "\n\nTraceback (most recent call last):\n"
-#define PYTHON_BACKTRACE_ID2 "\n\nLocal variables in innermost frame:\n"
-
-int main(int argc, char **argv)
-{
- /* Set options default values and parse program command line. */
- struct arguments arguments;
- arguments.independent = false;
- arguments.frame_depth = -1;
- arguments.single_thread = false;
- arguments.remove_exit_handlers = false;
- arguments.remove_noncrash_frames = false;
- arguments.debug_parser = false;
- arguments.debug_scanner = false;
- arguments.verbose = false;
- arguments.filename = 0;
- arguments.rate = false;
- arguments.crash_function = false;
- argp_parse(&argp, argc, argv, 0, 0, &arguments);
-
- /* If we are about to rate a backtrace, the other values must be set accordingly,
- no matter what the user set on the command line. */
- if (arguments.rate)
- {
- arguments.independent = false;
- arguments.frame_depth = 5;
- arguments.single_thread = true;
- arguments.remove_exit_handlers = true;
- arguments.remove_noncrash_frames = true;
- }
-
- /* If we are about to print the crash function, the other values must be set
- accordingly. */
- if (arguments.crash_function)
- {
- arguments.independent = false;
- arguments.single_thread = true;
- }
-
- char *bttext = NULL;
-
- /* If a filename was provided, read input from file.
- Otherwise read from stdin. */
- if (arguments.filename)
- {
- /* Open input file, and parse it. */
- FILE *fp = fopen(arguments.filename, "r");
- if (!fp)
- {
- fprintf(stderr, "Unable to open '%s'.\n", arguments.filename);
- exit(EX_NOINPUT); /* No such file or directory */
- }
-
- /* Header and footer of the backtrace is stripped to simplify the parser.
- * A drawback is that the backtrace must be loaded to memory.
- */
- fseek(fp, 0, SEEK_END);
- size_t size = ftell(fp);
- fseek(fp, 0, SEEK_SET);
-
- if (size > FILE_SIZE_LIMIT)
- {
- fprintf(stderr, "Input file too big (%zd). Maximum size is %d.\n",
- size, FILE_SIZE_LIMIT);
- exit(EX_IOERR);
- }
-
- /* Handle the case that the input file is empty.
- * The code is not designed to support completely empty backtrace.
- * Silently exit indicating success.
- */
- if (size == 0)
- {
- fclose(fp);
- exit(0);
- }
-
- bttext = malloc(size + 1);
- if (!bttext)
- {
- fclose(fp);
- fputs("malloc failed", stderr);
- exit(EX_OSERR);
- }
-
- if (1 != fread(bttext, size, 1, fp))
- {
- fclose(fp);
- fprintf(stderr, "Unable to read from '%s'.\n", arguments.filename);
- exit(EX_IOERR); /* IO Error */
- }
-
- bttext[size] = '\0';
- fclose(fp);
- }
- else
- {
- struct strbuf *btin = strbuf_new();
- int c;
- while ((c = getchar()) != EOF && c != '\0')
- strbuf_append_char(btin, (char)c);
-
- strbuf_append_char(btin, '\0');
- bttext = btin->buf;
- strbuf_free_nobuf(btin); /* free btin, but not its internal buffer */
- }
-
- /* Detect Python backtraces. If it is a Python backtrace,
- * silently exit for now.
- */
- if (strstr(bttext, PYTHON_BACKTRACE_ID1) != NULL
- && strstr(bttext, PYTHON_BACKTRACE_ID2) != NULL)
- {
- if (arguments.rate)
- puts("4");
- exit(0);
- }
-
- /* Print independent backtrace and exit. */
- if (arguments.independent)
- {
- struct strbuf *ibt = independent_backtrace(bttext);
- puts(ibt->buf);
- strbuf_free(ibt);
- free(bttext);
- return 0; /* OK */
- }
-
- /* Try to parse the backtrace. */
- struct backtrace *backtrace;
- backtrace = backtrace_parse(bttext, arguments.debug_parser, arguments.debug_scanner);
-
- /* If the parser failed print independent backtrace. */
- if (!backtrace)
- {
- if (arguments.rate)
- {
- free(bttext);
- puts("0");
- /* Parsing failed, but the output can be used. */
- return EX_PARSINGFAILED;
- }
- struct strbuf *ibt = independent_backtrace(bttext);
- puts(ibt->buf);
- strbuf_free(ibt);
- free(bttext);
- /* Parsing failed, but the output can be used. */
- return EX_PARSINGFAILED;
- }
-
- free(bttext);
-
- /* [--rate] Get the quality of the full backtrace. */
- float q1 = backtrace_quality(backtrace);
-
- /* If a single thread is requested, remove all other threads. */
- int retval = 0;
- struct thread *crash_thread = NULL;
- if (arguments.single_thread)
- {
- crash_thread = backtrace_find_crash_thread(backtrace);
- if (crash_thread)
- backtrace_remove_threads_except_one(backtrace, crash_thread);
- else
- {
- fprintf(stderr, "Detection of crash thread failed.\n");
- /* THREAD DETECTION FAILED, BUT THE OUTPUT CAN BE USED */
- retval = EX_THREADDETECTIONFAILED;
- }
- }
-
- /* [--rate] Get the quality of the crash thread. */
- float q2 = backtrace_quality(backtrace);
-
- if (arguments.remove_noncrash_frames)
- backtrace_remove_noncrash_frames(backtrace);
-
- /* If a frame removal is requested, do it now. */
- if (arguments.frame_depth > 0)
- backtrace_limit_frame_depth(backtrace, arguments.frame_depth);
-
- /* Frame removal can be done before removing exit handlers */
- if (arguments.remove_exit_handlers > 0)
- backtrace_remove_exit_handlers(backtrace);
-
- /* [--rate] Get the quality of frames around the crash. */
- float q3 = backtrace_quality(backtrace);
-
- if (arguments.rate)
- {
- /* Compute and store backtrace rating. */
- /* Compute and store backtrace rating. The crash frame
- is more important that the others. The frames around
- the crash are more important than the rest. */
- float qtot = 0.25f * q1 + 0.35f * q2 + 0.4f * q3;
-
- /* Turn the quality to rating. */
- const char *rating;
- if (qtot < 0.6f) rating = "0";
- else if (qtot < 0.7f) rating = "1";
- else if (qtot < 0.8f) rating = "2";
- else if (qtot < 0.9f) rating = "3";
- else rating = "4";
- puts(rating);
- }
-
- if (arguments.crash_function && crash_thread)
- {
- struct frame *crash_frame = crash_thread->frames;
- struct frame *abort_frame = thread_find_abort_frame(crash_thread);
- if (abort_frame)
- crash_frame = abort_frame->next;
- if (crash_frame && crash_frame->function)
- puts(crash_frame->function);
- }
-
- backtrace_print_tree(backtrace, arguments.verbose);
- backtrace_free(backtrace);
- return retval;
-}