CTF trace open/close

[babeltrace.git] / formats / ctf / ctf.c

diff --git a/formats/ctf/ctf.c b/formats/ctf/ctf.c
index 57357b792aa2a117f2242464e429f8adc4e659ff..f5ad955e0e417ccfdb12d928eeee880bc03ad08d 100644 (file)
--- a/formats/ctf/ctf.c
+++ b/formats/ctf/ctf.c
@@ -18,6 +18,20 @@
 
 #include <babeltrace/format.h>
 #include <babeltrace/ctf/types.h>
+#include <babeltrace/ctf/metadata.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <fcntl.h>
+#include <glib.h>
+
+struct trace_descriptor {
+       struct ctf_trace ctf_trace;
+};
+
+struct trace_descriptor *ctf_open_trace(const char *path, int flags);
+void ctf_close_trace(struct trace_descriptor *descriptor);
 
 static struct format ctf_format = {
        .uint_read = ctf_uint_read,
@@ -41,8 +55,94 @@ static struct format ctf_format = {
        .array_end = ctf_array_end,
        .sequence_begin = ctf_sequence_begin,
        .sequence_end = ctf_sequence_end,
+       .open_trace = ctf_open_trace,
+       .close_trace = ctf_close_trace,
 };
 
+static
+int ctf_open_trace_read(struct trace_descriptor *td, const char *path, int flags)
+{
+       int ret;
+
+       td->ctf_trace.flags = flags;
+
+       /* Open trace directory */
+       td->ctf_trace.dir = opendir(path);
+       if (!td->ctf_trace.dir) {
+               fprintf(stdout, "Unable to open trace directory.\n");
+               ret = -ENOENT;
+               goto error;
+       }
+
+
+
+       /*
+        * Open each stream: for each file, try to open, check magic
+        * number, and get the stream ID to add to the right location in
+        * the stream array.
+        *
+        * Keep the metadata file separate.
+        */
+
+
+
+       /*
+        * Use the metadata file to populate the trace metadata.
+        */
+
+
+       return 0;
+error:
+       return ret;
+}
+
+static
+int ctf_open_trace_write(struct trace_descriptor *td, const char *path, int flags)
+{
+       int ret;
+
+       ret = mkdir(path, S_IRWXU|S_IRWXG);
+       if (ret)
+               return ret;
+
+       return 0;
+}
+
+struct trace_descriptor *ctf_open_trace(const char *path, int flags)
+{
+       struct trace_descriptor *td;
+       int ret;
+
+       td = g_new(struct trace_descriptor, 1);
+
+       switch (flags) {
+       case O_RDONLY:
+               ret = ctf_open_trace_read(td, path, flags);
+               if (ret)
+                       goto error;
+               break;
+       case O_WRONLY:
+               ret = ctf_open_trace_write(td, path, flags);
+               if (ret)
+                       goto error;
+               break;
+       default:
+               fprintf(stdout, "Incorrect open flags.\n");
+               goto error;
+       }
+
+       return td;
+error:
+       g_free(td);
+       return NULL;
+}
+
+void ctf_close_trace(struct trace_descriptor *td)
+{
+       closedir(td->ctf_trace.dir);
+       g_free(td);
+}
+
 void __attribute__((constructor)) ctf_init(void)
 {
        int ret;