X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=blobdiff_plain;f=converter%2Fbabeltrace.c;h=5c3724252936392b0ae110c2691a71bb2b37d8b5;hp=900768879830dbb718f1bac8e230b731d5f7dfc0;hb=70bd0a12b09ce7f233189cf07e090fda593ebc48;hpb=4c8bfb7e0a9cef6e74cefa38ed54bf8cbd424183 diff --git a/converter/babeltrace.c b/converter/babeltrace.c index 90076887..5c372425 100644 --- a/converter/babeltrace.c +++ b/converter/babeltrace.c @@ -1,6 +1,319 @@ +/* + * babeltrace.c + * + * Babeltrace Trace Converter + * + * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation + * + * Author: Mathieu Desnoyers + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + */ +#define _XOPEN_SOURCE 700 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include -int main(int argv, char **argc) +#define DEFAULT_FILE_ARRAY_SIZE 1 +static char *opt_input_format; +static char *opt_output_format; + +static const char *opt_input_path; +static const char *opt_output_path; + +int babeltrace_verbose, babeltrace_debug; +int opt_field_names; + +static struct trace_collection trace_collection_read; +static struct format *fmt_read; + +void strlower(char *str) +{ + while (*str) { + *str = tolower(*str); + str++; + } +} + +enum { + OPT_NONE = 0, + OPT_HELP, + OPT_LIST, + OPT_VERBOSE, + OPT_DEBUG, + OPT_NAMES, +}; + +static struct poptOption long_options[] = { + /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ + { "input-format", 'i', POPT_ARG_STRING, &opt_input_format, OPT_NONE, NULL, NULL }, + { "output-format", 'o', POPT_ARG_STRING, &opt_output_format, OPT_NONE, NULL, NULL }, + { "help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL }, + { "list", 'l', POPT_ARG_NONE, NULL, OPT_LIST, NULL, NULL }, + { "verbose", 'v', POPT_ARG_NONE, NULL, OPT_VERBOSE, NULL, NULL }, + { "debug", 'd', POPT_ARG_NONE, NULL, OPT_DEBUG, NULL, NULL }, + { "names", 'n', POPT_ARG_NONE, NULL, OPT_NAMES, NULL, NULL }, + { NULL, 0, 0, NULL, 0, NULL, NULL }, +}; + +static void list_formats(FILE *fp) +{ + fprintf(fp, "\n"); + bt_fprintf_format_list(fp); +} + +static void usage(FILE *fp) { - return 0; + fprintf(fp, "BabelTrace Trace Converter %s\n\n", VERSION); + fprintf(fp, "usage : babeltrace [OPTIONS] INPUT \n"); + fprintf(fp, "\n"); + fprintf(fp, " INPUT Input trace path\n"); + fprintf(fp, " OUTPUT Output trace path (default: stdout)\n"); + fprintf(fp, "\n"); + fprintf(fp, " -i, --input-format FORMAT Input trace format (default: ctf)\n"); + fprintf(fp, " -o, --output-format FORMAT Output trace format (default: text)\n"); + fprintf(fp, "\n"); + fprintf(fp, " -h, --help This help message\n"); + fprintf(fp, " -l, --list List available formats\n"); + fprintf(fp, " -v, --verbose Verbose mode\n"); + fprintf(fp, " -d, --debug Debug mode\n"); + fprintf(fp, " -n, --names Print field names\n"); + list_formats(fp); + fprintf(fp, "\n"); +} + +/* + * Return 0 if caller should continue, < 0 if caller should return + * error, > 0 if caller should exit without reporting error. + */ +static int parse_options(int argc, char **argv) +{ + poptContext pc; + int opt, ret = 0; + + if (argc == 1) { + usage(stdout); + return 1; /* exit cleanly */ + } + + pc = poptGetContext(NULL, argc, (const char **) argv, long_options, 0); + poptReadDefaultConfig(pc, 0); + + while ((opt = poptGetNextOpt(pc)) != -1) { + switch (opt) { + case OPT_HELP: + usage(stdout); + ret = 1; /* exit cleanly */ + goto end; + case OPT_LIST: + list_formats(stdout); + ret = 1; + goto end; + case OPT_VERBOSE: + babeltrace_verbose = 1; + break; + case OPT_DEBUG: + babeltrace_debug = 1; + break; + case OPT_NAMES: + opt_field_names = 1; + break; + default: + ret = -EINVAL; + goto end; + } + } + + opt_input_path = poptGetArg(pc); + if (!opt_input_path) { + ret = -EINVAL; + goto end; + } + opt_output_path = poptGetArg(pc); +end: + if (pc) { + poptFreeContext(pc); + } + return ret; +} + +static void init_trace_collection(struct trace_collection *tc) +{ + tc->array = g_ptr_array_sized_new(DEFAULT_FILE_ARRAY_SIZE); +} + +/* + * finalize_trace_collection() closes the opened traces for read + * and free the memory allocated for trace collection + */ +static void finalize_trace_collection(struct trace_collection *tc) +{ + int i; + + for (i = 0; i < tc->array->len; i++) { + struct trace_descriptor *temp = + g_ptr_array_index(tc->array, i); + fmt_read->close_trace(temp); + } + g_ptr_array_free(tc->array, TRUE); +} + +static void trace_collection_add(struct trace_collection *tc, + struct trace_descriptor *td) +{ + g_ptr_array_add(tc->array, td); +} + +/* + * traverse_dir() is the callback functiion for File Tree Walk (nftw). + * it receives the path of the current entry (file, dir, link..etc) with + * a flag to indicate the type of the entry. + * if the entry being visited is a directory and contains a metadata file, + * then open it for reading and save a trace_descriptor to that directory + * in the read trace collection. + */ +static int traverse_dir(const char *fpath, const struct stat *sb, + int tflag, struct FTW *ftwbuf) +{ + int dirfd; + int fd; + struct trace_descriptor *td_read; + + if (tflag != FTW_D) + return 0; + dirfd = open(fpath, 0); + if (dirfd < 0) { + fprintf(stdout, "[error] unable to open trace " + "directory file descriptor.\n"); + return -1; + } + fd = openat(dirfd, "metadata", O_RDONLY); + if (fd < 0) { + close(dirfd); + } else { + close(fd); + close(dirfd); + td_read = fmt_read->open_trace(fpath, O_RDONLY); + if (!td_read) { + fprintf(stdout, "Error opening trace \"%s\" " + "for reading.\n\n", fpath); + return -1; /* error */ + } + trace_collection_add(&trace_collection_read, td_read); + } + return 0; /* success */ +} + +int main(int argc, char **argv) +{ + int ret; + struct format *fmt_write; + struct trace_descriptor *td_write; + + ret = parse_options(argc, argv); + if (ret < 0) { + fprintf(stdout, "Error parsing options.\n\n"); + usage(stdout); + exit(EXIT_FAILURE); + } else if (ret > 0) { + exit(EXIT_SUCCESS); + } + printf_verbose("Verbose mode active.\n"); + printf_debug("Debug mode active.\n"); + + if (opt_input_format) + strlower(opt_input_format); + if (opt_output_format) + strlower(opt_output_format); + + printf_verbose("Converting from directory: %s\n", opt_input_path); + printf_verbose("Converting from format: %s\n", + opt_input_format ? : "ctf "); + printf_verbose("Converting to directory: %s\n", + opt_output_path ? : ""); + printf_verbose("Converting to format: %s\n", + opt_output_format ? : "text "); + + if (!opt_input_format) + opt_input_format = "ctf"; + if (!opt_output_format) + opt_output_format = "text"; + fmt_read = bt_lookup_format(g_quark_from_static_string(opt_input_format)); + if (!fmt_read) { + fprintf(stdout, "[error] Format \"%s\" is not supported.\n\n", + opt_input_format); + exit(EXIT_FAILURE); + } + fmt_write = bt_lookup_format(g_quark_from_static_string(opt_output_format)); + if (!fmt_write) { + fprintf(stdout, "[error] format \"%s\" is not supported.\n\n", + opt_output_format); + exit(EXIT_FAILURE); + } + + /* + * pass the input path to nftw() . + * specify traverse_dir() as the callback function. + * depth = 10 which is the max number of file descriptors + * that nftw() can open at a given time. + * flags = 0 check nftw documentation for more info . + */ + init_trace_collection(&trace_collection_read); + ret = nftw(opt_input_path, traverse_dir, 10, 0); + if (ret != 0) { + fprintf(stdout, "[error] opening trace \"%s\" for reading.\n\n", + opt_input_path); + goto error_td_read; + } + if (trace_collection_read.array->len == 0) { + fprintf(stdout, "[warning] no metadata file was found." + " no output was generated\n"); + return 0; + } + + td_write = fmt_write->open_trace(opt_output_path, O_RDWR); + if (!td_write) { + fprintf(stdout, "Error opening trace \"%s\" for writing.\n\n", + opt_output_path ? : ""); + goto error_td_write; + } + + ret = convert_trace(td_write, &trace_collection_read); + if (ret) { + fprintf(stdout, "Error printing trace.\n\n"); + goto error_copy_trace; + } + + fmt_write->close_trace(td_write); + finalize_trace_collection(&trace_collection_read); + printf_verbose("finished converting. Output written to:\n%s\n", + opt_output_path ? : ""); + exit(EXIT_SUCCESS); + + /* Error handling */ +error_copy_trace: + fmt_write->close_trace(td_write); +error_td_write: + finalize_trace_collection(&trace_collection_read); +error_td_read: + exit(EXIT_FAILURE); }