* 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;
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) {
static void usage(FILE *fp)
{
- fprintf(fp, "BabelTrace Trace Converter %u.%u\n\n",
- BABELTRACE_VERSION_MAJOR,
- BABELTRACE_VERSION_MINOR);
+ 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");
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 ? : "ctf <default>");
- printf_verbose("Converting to file: %s\n",
+ printf_verbose("Converting to directory: %s\n",
opt_output_path ? : "<stdout>");
printf_verbose("Converting to format: %s\n",
opt_output_format ? : "text <default>");
exit(EXIT_FAILURE);
}
- td_read = fmt_read->open_trace(opt_input_path, O_RDONLY);
- if (!td_read) {
+ /*
+ * 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) {
goto error_td_write;
}
- ret = convert_trace(td_write, td_read);
+ 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