mw_result_t LoadDebugDump(const char *dump_dir_name, problem_data_t **problem_data)
{
mw_result_t res;
struct dump_dir *dd = dd_opendir(dump_dir_name, /*flags:*/ 0);
if (!dd)
return MW_ERROR;
struct cdump_state state;
state.uid = dd_load_text(dd, FILENAME_UID);
state.uuid = NULL;
state.crash_dump_dup_name = NULL;
char *analyzer = dd_load_text(dd, FILENAME_ANALYZER);
dd_close(dd);
res = MW_ERROR;
/* Run post-create event handler(s) */
struct run_event_state *run_state = new_run_event_state();
run_state->post_run_callback = is_crash_a_dup;
run_state->post_run_param = &state;
run_state->logging_callback = do_log;
int r = run_event_on_dir_name(run_state, dump_dir_name, "post-create");
free_run_event_state(run_state);
//TODO: consider this case:
// new dump is created, post-create detects that it is a dup,
// but then FillCrashInfo(dup_name) *FAILS*.
// In this case, we later delete damaged dup_name (right?)
// but new dump never gets its FILENAME_COUNT set!
/* Is crash a dup? (In this case, is_crash_a_dup() should have
* aborted "post-create" event processing as soon as it saw uuid
* and determined that there is another crash with same uuid.
* In this case it sets state.crash_dump_dup_name)
*/
if (!state.crash_dump_dup_name)
{
/* No. Was there error on one of processing steps in run_event? */
if (r != 0)
goto ret; /* yes */
/* Was uuid created after all? (In this case, is_crash_a_dup()
* should have fetched it and created state.uuid)
*/
if (!state.uuid)
{
/* no */
log("Dump directory '%s' has no UUID element", dump_dir_name);
goto ret;
}
}
else
{
dump_dir_name = state.crash_dump_dup_name;
}
/* Loads problem_data (from the *first debugdump dir* if this one is a dup)
* Returns:
* MW_OCCURRED: "crash count is != 1" (iow: it is > 1 - dup)
* MW_OK: "crash count is 1" (iow: this is a new crash, not a dup)
* else: an error code
*/
{
dd = dd_opendir(dump_dir_name, /*flags:*/ 0);
if (!dd)
{
res = MW_ERROR;
goto ret;
}
/* Reset mode/uig/gid to correct values for all files created by event run */
dd_sanitize_mode_and_owner(dd);
/* Update count */
char *count_str = dd_load_text_ext(dd, FILENAME_COUNT, DD_FAIL_QUIETLY_ENOENT);
unsigned long count = strtoul(count_str, NULL, 10);
count++;
char new_count_str[sizeof(long)*3 + 2];
sprintf(new_count_str, "%lu", count);
dd_save_text(dd, FILENAME_COUNT, new_count_str);
dd_close(dd);
*problem_data = FillCrashInfo(dump_dir_name);
if (*problem_data != NULL)
{
res = MW_OK;
if (count > 1)
{
log("Dump directory is a duplicate of %s", dump_dir_name);
res = MW_OCCURRED;
}
}
}
ret:
free(state.uuid);
free(state.uid);
free(state.crash_dump_dup_name);
free(analyzer);
return res;
}
int main(int argc, char **argv)
{
/* I18n */
setlocale(LC_ALL, "");
#if ENABLE_NLS
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
#endif
abrt_init(argv);
const char *program_usage_string = _(
"& [-v -i -n INCREMENT] -e|--event EVENT DIR..."
);
char *event_name = NULL;
int interactive = 0; /* must be _int_, OPT_BOOL expects that! */
int nice_incr = 0;
struct options program_options[] = {
OPT__VERBOSE(&g_verbose),
OPT_STRING('e', "event" , &event_name, "EVENT", _("Run EVENT on DIR")),
OPT_BOOL('i', "interactive" , &interactive, _("Communicate directly to the user")),
OPT_INTEGER('n', "nice" , &nice_incr, _("Increment the nice value by INCREMENT")),
OPT_END()
};
parse_opts(argc, argv, program_options, program_usage_string);
argv += optind;
if (!*argv || !event_name)
show_usage_and_die(program_usage_string, program_options);
load_abrt_conf();
const char *const opt_env_nice = getenv("ABRT_EVENT_NICE");
if (opt_env_nice != NULL && opt_env_nice[0] != '\0')
{
log_debug("Using ABRT_EVENT_NICE=%s to increment the nice value", opt_env_nice);
nice_incr = xatoi(opt_env_nice);
}
if (nice_incr != 0)
{
log_debug("Incrementing the nice value by %d", nice_incr);
const int ret = nice(nice_incr);
if (ret == -1)
perror_msg_and_die("Failed to increment the nice value");
}
bool post_create = (strcmp(event_name, "post-create") == 0);
char *dump_dir_name = NULL;
while (*argv)
{
dump_dir_name = xstrdup(*argv++);
int i = strlen(dump_dir_name);
while (--i >= 0)
if (dump_dir_name[i] != '/')
break;
dump_dir_name[++i] = '\0';
struct dump_dir *dd = dd_opendir(dump_dir_name, /*flags:*/ DD_OPEN_READONLY);
if (!dd)
return 1;
uid = dd_load_text_ext(dd, FILENAME_UID, DD_FAIL_QUIETLY_ENOENT);
dd_close(dd);
struct run_event_state *run_state = new_run_event_state();
if (!interactive)
make_run_event_state_forwarding(run_state);
run_state->logging_callback = do_log;
if (post_create)
run_state->post_run_callback = is_crash_a_dup;
int r = run_event_on_dir_name(run_state, dump_dir_name, event_name);
const bool no_action_for_event = (r == 0 && run_state->children_count == 0);
free_run_event_state(run_state);
/* Needed only if is_crash_a_dup() was called, but harmless
* even if it wasn't:
*/
dup_uuid_fini();
dup_corebt_fini();
if (no_action_for_event)
error_msg_and_die("No actions are found for event '%s'", event_name);
//TODO: consider this case:
// new dump is created, post-create detects that it is a dup,
// but then load_crash_info(dup_name) *FAILS*.
// In this case, we later delete damaged dup_name (right?)
// but new dump never gets its FILENAME_COUNT set!
/* Is crash a dup? (In this case, is_crash_a_dup() should have
* aborted "post-create" event processing as soon as it saw uuid
* and determined that there is another crash with same uuid.
* In this case it sets crash_dump_dup_name)
*/
if (crash_dump_dup_name)
error_msg_and_die("DUP_OF_DIR: %s", crash_dump_dup_name);
/* Was there error on one of processing steps in run_event? */
if (r != 0)
return r; /* yes */
free(dump_dir_name);
dump_dir_name = NULL;
}
/* exit 0 means, that there is no duplicate of dump-dir */
return 0;
}
int report_problem_in_dir(const char *dirname, int flags)
{
/* Prepare it before fork, to avoid thread-unsafe setenv there */
char *prgname = (char*) g_get_prgname();
if (prgname)
prgname = xasprintf("LIBREPORT_PRGNAME=%s", prgname);
fflush(NULL);
pid_t pid = fork();
if (pid < 0) /* error */
{
perror_msg("fork");
return -1;
}
if (pid == 0) /* child */
{
const char *event_name;
const char *path, *path1, *path2;
char *args[7], **pp;
/* Graphical tool */
event_name = "report-gui";
path1 = BIN_DIR"/report-gtk";
path2 = "report-gtk";
pp = args;
*pp++ = (char *)"report-gtk";
if (flags & LIBREPORT_DEL_DIR)
*pp++ = (char *)"--delete";
*pp++ = (char *)"--";
*pp++ = (char *)dirname;
*pp = NULL;
if (prgname)
putenv(prgname);
if (flags & LIBREPORT_RUN_NEWT)
{
/* we want to run newt first */
event_name = "report-cli";
path1 = BIN_DIR"/report-newt";
path2 = "report-newt";
pp = args;
*pp++ = (char *)"report-newt";
if (flags & LIBREPORT_DEL_DIR)
*pp++ = (char *)"--delete";
*pp++ = (char *)"--";
*pp++ = (char *)dirname;
*pp = NULL;
}
else if (!getenv("DISPLAY") || (flags & LIBREPORT_RUN_CLI))
{
/* GUI won't work, use command line tool instead */
event_name = "report-cli";
path1 = BIN_DIR"/report-cli";
path2 = "report-cli";
pp = args;
*pp++ = (char *)"report-cli";
if (flags & LIBREPORT_DEL_DIR)
*pp++ = (char *)"--delete";
*pp++ = (char *)"-e";
*pp++ = (char *)"report-cli";
*pp++ = (char *)"--";
*pp++ = (char *)dirname;
*pp = NULL;
}
/* Some callers set SIGCHLD to SIG_IGN.
* However, reporting spawns child processes.
* Suppressing child death notification terribly confuses some of them.
* Just in case, undo it.
* Note that we do it in the child, so the parent is never affected.
*/
signal(SIGCHLD, SIG_DFL);
if (!(flags & (LIBREPORT_WAIT | LIBREPORT_GETPID)))
{
/* Caller doesn't want to wait for completion (!LIBREPORT_WAIT),
* and doesn't want to have pid returned (!LIBREPORT_GETPID).
* Create a grandchild, and then exit.
* This reparents grandchild to init, and makes waitpid
* in parent detect our exit and return almost immediately.
*/
pid_t pid = fork();
if (pid < 0) /* error */
perror_msg_and_die("fork");
if (pid != 0) /* not grandchild */
{
/* And now we exit: */
_exit(0);
}
/* There's an alternative approach to achieve this,
* instead of using --delete.
* We can create yet another intermediate process which
* waits for reporting child to finish, and then
* removes temporary dump dir.
* Pros: deletion becomes more robust.
* Even if child crashes, dir will be deleted.
* Cons: having another process would use some resources,
* and we'll need to at least close all open file descriptors,
* and reopen stdio to /dev/null. We also might keep
* a lot of libraries loaded:
* who knows what parent process links against.
* (can be worked around by exec'ing a "wait & delete" helper)
*/
}
struct run_event_state *run_state = new_run_event_state();
int r = run_event_on_dir_name(run_state, dirname, event_name);
int no_such_event = (r == 0 && run_state->children_count == 0);
free_run_event_state(run_state);
if (!no_such_event)
{
if (flags & LIBREPORT_DEL_DIR)
{
struct dump_dir *dd = dd_opendir(dirname, 0);
if (dd)
dd_delete(dd);
}
_exit(r);
}
/* No "report-cli/gui" event found, do it old-style */
path = path1;
VERB1 log("Executing: %s", path);
execv(path, args);
/* Did not find the desired executable in the installation directory.
* Trying to find it in PATH.
*/
path = path2;
execvp(path, args);
perror_msg_and_die("Can't execute %s", path);
}
/* parent */
free(prgname);
if (!(flags & LIBREPORT_WAIT) && (flags & LIBREPORT_GETPID))
return pid;
/* we are here either if LIBREPORT_WAIT (caller wants exitcode)
* or !LIBREPORT_GETPID (caller doesn't want to have a child).
* In both cases, we need to wait for child:
*/
int status;
pid = safe_waitpid(pid, &status, 0);
if (pid <= 0)
{
perror_msg("waitpid");
return -1;
}
if (WIFEXITED(status))
{
VERB2 log("reporting finished with exitcode %d", WEXITSTATUS(status));
return WEXITSTATUS(status);
}
/* child died from a signal: WIFSIGNALED(status) should be true */
VERB2 log("reporting killed by signal %d", WTERMSIG(status));
return WTERMSIG(status) + 128;
}
