static int trace_event__init2(void) { int be = traceevent_host_bigendian(); struct pevent *pevent; if (trace_event__init(&tevent)) return -1; pevent = tevent.pevent; pevent_set_flag(pevent, PEVENT_NSEC_OUTPUT); pevent_set_file_bigendian(pevent, be); pevent_set_host_bigendian(pevent, be); tevent_initialized = true; return 0; }
ssize_t trace_report(int fd, struct trace_event *tevent, bool __repipe) { char buf[BUFSIZ]; char test[] = { 23, 8, 68 }; char *version; int show_version = 0; int show_funcs = 0; int show_printk = 0; ssize_t size = -1; int file_bigendian; int host_bigendian; int file_long_size; int file_page_size; struct tep_handle *pevent = NULL; int err; repipe = __repipe; input_fd = fd; if (do_read(buf, 3) < 0) return -1; if (memcmp(buf, test, 3) != 0) { pr_debug("no trace data in the file"); return -1; } if (do_read(buf, 7) < 0) return -1; if (memcmp(buf, "tracing", 7) != 0) { pr_debug("not a trace file (missing 'tracing' tag)"); return -1; } version = read_string(); if (version == NULL) return -1; if (show_version) printf("version = %s\n", version); if (do_read(buf, 1) < 0) { free(version); return -1; } file_bigendian = buf[0]; host_bigendian = bigendian(); if (trace_event__init(tevent)) { pr_debug("trace_event__init failed"); goto out; } pevent = tevent->pevent; tep_set_flag(pevent, TEP_NSEC_OUTPUT); tep_set_file_bigendian(pevent, file_bigendian); tep_set_host_bigendian(pevent, host_bigendian); if (do_read(buf, 1) < 0) goto out; file_long_size = buf[0]; file_page_size = read4(pevent); if (!file_page_size) goto out; tep_set_long_size(pevent, file_long_size); tep_set_page_size(pevent, file_page_size); err = read_header_files(pevent); if (err) goto out; err = read_ftrace_files(pevent); if (err) goto out; err = read_event_files(pevent); if (err) goto out; err = read_proc_kallsyms(pevent); if (err) goto out; err = read_ftrace_printk(pevent); if (err) goto out; if (atof(version) >= 0.6) { err = read_saved_cmdline(pevent); if (err) goto out; } size = trace_data_size; repipe = false; if (show_funcs) { tep_print_funcs(pevent); } else if (show_printk) { tep_print_printk(pevent); } pevent = NULL; out: if (pevent) trace_event__cleanup(tevent); free(version); return size; }