*
* Babeltrace Trace Converter
*
- * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
+ *
+ * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* all copies or substantial portions of the Software.
*/
-#include <babeltrace/babeltrace.h>
+#define _XOPEN_SOURCE 700
+#include <config.h>
+#include <babeltrace/babeltrace-internal.h>
#include <babeltrace/format.h>
#include <popt.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
+#include <ftw.h>
+#include <dirent.h>
+#include <unistd.h>
+#define DEFAULT_FILE_ARRAY_SIZE 1
static char *opt_input_format;
static char *opt_output_format;
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)
{
OPT_LIST,
OPT_VERBOSE,
OPT_DEBUG,
+ OPT_NAMES,
};
static struct poptOption long_options[] = {
{ "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 usage(FILE *fp)
{
- fprintf(fp, "Babeltrace %u.%u\n\n", BABELTRACE_VERSION_MAJOR,
- BABELTRACE_VERSION_MINOR);
- fprintf(fp, "usage : babeltrace [OPTIONS] INPUT OUTPUT\n");
+ fprintf(fp, "BabelTrace Trace Converter %s\n\n", VERSION);
+ fprintf(fp, "usage : babeltrace [OPTIONS] INPUT <OUTPUT>\n");
fprintf(fp, "\n");
- fprintf(fp, " INPUT Input trace path\n");
- fprintf(fp, " OUTPUT Output trace path\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 Input trace path\n");
- fprintf(fp, " -o, --output-format Input trace path\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, " -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");
}
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);
case OPT_DEBUG:
babeltrace_debug = 1;
break;
+ case OPT_NAMES:
+ opt_field_names = 1;
+ break;
default:
ret = -EINVAL;
goto end;
goto end;
}
opt_output_path = poptGetArg(pc);
- if (!opt_output_path) {
- ret = -EINVAL;
- goto end;
- }
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_read, *fmt_write;
- struct trace_descriptor *td_read, *td_write;
+ struct format *fmt_write;
+ struct trace_descriptor *td_write;
ret = parse_options(argc, argv);
if (ret < 0) {
if (opt_output_format)
strlower(opt_output_format);
- printf_verbose("Converting from file: %s\n", opt_input_path);
+ printf_verbose("Converting from directory: %s\n", opt_input_path);
printf_verbose("Converting from format: %s\n",
- opt_input_format ? : "<autodetect>");
- printf_verbose("Converting to file: %s\n", opt_output_path);
+ opt_input_format ? : "ctf <default>");
+ printf_verbose("Converting to directory: %s\n",
+ opt_output_path ? : "<stdout>");
printf_verbose("Converting to format: %s\n",
- opt_output_format ? : "ctf");
+ opt_output_format ? : "text <default>");
- if (!opt_input_format) {
- fprintf(stdout, "Error: input format autodetection not implemented yet.\n\n");
- usage(stdout);
- exit(EXIT_FAILURE);
- }
+ 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",
+ fprintf(stdout, "[error] Format \"%s\" is not supported.\n\n",
opt_input_format);
exit(EXIT_FAILURE);
}
- if (!opt_output_format)
- opt_output_format = "ctf";
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",
+ fprintf(stdout, "[error] format \"%s\" is not supported.\n\n",
opt_output_format);
exit(EXIT_FAILURE);
}
- td_read = fmt_read->open_trace(opt_input_path, O_RDONLY);
- if (!td_read) {
- fprintf(stdout, "Error opening trace \"%s\" for reading.\n\n",
+ /*
+ * 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_WRONLY);
+ 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);
+ opt_output_path ? : "<none>");
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);
- fmt_read->close_trace(td_read);
+ finalize_trace_collection(&trace_collection_read);
+ printf_verbose("finished converting. Output written to:\n%s\n",
+ opt_output_path ? : "<stdout>");
exit(EXIT_SUCCESS);
/* Error handling */
+error_copy_trace:
fmt_write->close_trace(td_write);
error_td_write:
- fmt_read->close_trace(td_read);
+ finalize_trace_collection(&trace_collection_read);
error_td_read:
exit(EXIT_FAILURE);
}
projects / babeltrace.git / blobdiff