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Diffstat (limited to 'src/utils/abrt-backtrace.c')
| -rw-r--r-- | src/utils/abrt-backtrace.c | 339 |
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; -} |