#include <babeltrace/ctf/metadata.h>
#include <babeltrace/babeltrace.h>
#include <inttypes.h>
+#include <stdio.h>
#include <uuid/uuid.h>
#include <sys/mman.h>
#include <errno.h>
+#include <endian.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#define WRITE_PACKET_LEN (getpagesize() * 8 * CHAR_BIT)
#define UUID_LEN 16 /* uuid by value len */
+#ifndef min
+#define min(a, b) (((a) < (b)) ? (a) : (b))
+#endif
+
extern int yydebug;
struct trace_descriptor *ctf_open_trace(const char *path, int flags);
[ CTF_TYPE_STRING ] = ctf_string_read,
[ CTF_TYPE_STRUCT ] = ctf_struct_rw,
[ CTF_TYPE_VARIANT ] = ctf_variant_rw,
- [ CTF_TYPE_ARRAY ] = ctf_array_rw,
- [ CTF_TYPE_SEQUENCE ] = ctf_sequence_rw,
+ [ CTF_TYPE_ARRAY ] = ctf_array_read,
+ [ CTF_TYPE_SEQUENCE ] = ctf_sequence_read,
};
static
[ CTF_TYPE_STRING ] = ctf_string_write,
[ CTF_TYPE_STRUCT ] = ctf_struct_rw,
[ CTF_TYPE_VARIANT ] = ctf_variant_rw,
- [ CTF_TYPE_ARRAY ] = ctf_array_rw,
- [ CTF_TYPE_SEQUENCE ] = ctf_sequence_rw,
+ [ CTF_TYPE_ARRAY ] = ctf_array_write,
+ [ CTF_TYPE_SEQUENCE ] = ctf_sequence_write,
};
static
};
static
-int ctf_read_event(struct stream_pos *ppos, struct ctf_stream_class *stream_class)
+int ctf_read_event(struct stream_pos *ppos, struct ctf_stream *stream)
{
struct ctf_stream_pos *pos =
container_of(ppos, struct ctf_stream_pos, parent);
+ struct ctf_stream_class *stream_class = stream->stream_class;
struct ctf_event *event_class;
uint64_t id = 0;
- int len_index;
int ret;
if (pos->offset == EOF)
/* Read event header */
if (stream_class->event_header) {
+ struct definition_integer *integer_definition;
+
ret = generic_rw(ppos, &stream_class->event_header->p);
if (ret)
goto error;
/* lookup event id */
- len_index = struct_declaration_lookup_field_index(stream_class->event_header_decl,
- g_quark_from_static_string("id"));
- if (len_index >= 0) {
- struct definition_integer *defint;
- struct definition *field;
+ integer_definition = lookup_integer(&stream_class->event_header->p, "id", FALSE);
+ if (integer_definition) {
+ id = integer_definition->value._unsigned;
+ } else {
+ struct definition_enum *enum_definition;
- field = struct_definition_get_field_from_index(stream_class->event_header, len_index);
- assert(field->declaration->id == CTF_TYPE_INTEGER);
- defint = container_of(field, struct definition_integer, p);
- assert(defint->declaration->signedness == FALSE);
- id = defint->value._unsigned; /* set id */
+ enum_definition = lookup_enum(&stream_class->event_header->p, "id", FALSE);
+ if (enum_definition) {
+ id = enum_definition->integer->value._unsigned;
+ }
+ }
+
+ /* lookup timestamp */
+ integer_definition = lookup_integer(&stream_class->event_header->p, "timestamp", FALSE);
+ if (integer_definition) {
+ stream->timestamp = integer_definition->value._unsigned;
+ } else {
+ struct definition *definition;
+
+ definition = lookup_variant(&stream_class->event_header->p, "v");
+ if (definition) {
+ integer_definition = lookup_integer(definition, "id", FALSE);
+ if (integer_definition) {
+ id = integer_definition->value._unsigned;
+ }
+ integer_definition = lookup_integer(definition, "timestamp", FALSE);
+ if (integer_definition) {
+ stream->timestamp = integer_definition->value._unsigned;
+ }
+ }
}
}
}
static
-int ctf_write_event(struct stream_pos *pos, struct ctf_stream_class *stream_class)
+int ctf_write_event(struct stream_pos *pos, struct ctf_stream *stream)
{
+ struct ctf_stream_class *stream_class = stream->stream_class;
struct ctf_event *event_class;
uint64_t id = 0;
int len_index;
}
}
-/*
- * TODO: for now, we treat the metadata file as a simple text file
- * (without any header nor packets nor padding).
- */
+static
+int packet_metadata(struct ctf_trace *td, FILE *fp)
+{
+ uint32_t magic;
+ size_t len;
+ int ret = 0;
+
+ len = fread(&magic, sizeof(magic), 1, fp);
+ if (len != 1) {
+ goto end;
+ }
+ if (magic == TSDL_MAGIC) {
+ ret = 1;
+ td->byte_order = BYTE_ORDER;
+ } else if (magic == GUINT32_SWAP_LE_BE(TSDL_MAGIC)) {
+ ret = 1;
+ td->byte_order = (BYTE_ORDER == BIG_ENDIAN) ?
+ LITTLE_ENDIAN : BIG_ENDIAN;
+ }
+ CTF_TRACE_SET_FIELD(td, byte_order);
+end:
+ rewind(fp);
+ return ret;
+}
+
+static
+int ctf_open_trace_metadata_packet_read(struct ctf_trace *td, FILE *in,
+ FILE *out)
+{
+ struct metadata_packet_header header;
+ size_t readlen, writelen, toread;
+ char buf[4096];
+ int ret = 0;
+
+ readlen = fread(&header, header_sizeof(header), 1, in);
+ if (readlen < 1)
+ return -EINVAL;
+
+ if (td->byte_order != BYTE_ORDER) {
+ header.magic = GUINT32_SWAP_LE_BE(header.magic);
+ header.checksum = GUINT32_SWAP_LE_BE(header.checksum);
+ header.content_size = GUINT32_SWAP_LE_BE(header.content_size);
+ header.packet_size = GUINT32_SWAP_LE_BE(header.packet_size);
+ }
+ if (header.checksum)
+ fprintf(stdout, "[warning] checksum verification not supported yet.\n");
+ if (header.compression_scheme) {
+ fprintf(stdout, "[error] compression (%u) not supported yet.\n",
+ header.compression_scheme);
+ return -EINVAL;
+ }
+ if (header.encryption_scheme) {
+ fprintf(stdout, "[error] encryption (%u) not supported yet.\n",
+ header.encryption_scheme);
+ return -EINVAL;
+ }
+ if (header.checksum_scheme) {
+ fprintf(stdout, "[error] checksum (%u) not supported yet.\n",
+ header.checksum_scheme);
+ return -EINVAL;
+ }
+ if (!CTF_TRACE_FIELD_IS_SET(td, uuid)) {
+ memcpy(td->uuid, header.uuid, sizeof(header.uuid));
+ CTF_TRACE_SET_FIELD(td, uuid);
+ } else {
+ if (uuid_compare(header.uuid, td->uuid))
+ return -EINVAL;
+ }
+
+ toread = header.content_size / CHAR_BIT;
+
+ for (;;) {
+ readlen = fread(buf, sizeof(char), min(sizeof(buf), toread), in);
+ if (ferror(in)) {
+ ret = -EINVAL;
+ break;
+ }
+ if (babeltrace_debug) {
+ fprintf(stdout, "[debug] metadata packet read: %s\n",
+ buf);
+ }
+
+ writelen = fwrite(buf, sizeof(char), readlen, out);
+ if (writelen < readlen) {
+ ret = -EIO;
+ break;
+ }
+ if (ferror(out)) {
+ ret = -EINVAL;
+ break;
+ }
+ toread -= readlen;
+ if (!toread) {
+ ret = 0; /* continue reading next packet */
+ break;
+ }
+ }
+ return ret;
+}
+
+static
+int ctf_open_trace_metadata_stream_read(struct ctf_trace *td, FILE **fp,
+ char **buf)
+{
+ FILE *in, *out;
+ size_t size;
+ int ret;
+
+ in = *fp;
+ out = open_memstream(buf, &size);
+ if (out == NULL)
+ return -errno;
+
+ for (;;) {
+ ret = ctf_open_trace_metadata_packet_read(td, in, out);
+ if (ret) {
+ break;
+ }
+ if (feof(in)) {
+ ret = 0;
+ break;
+ }
+ }
+ fclose(out); /* flush the buffer */
+ fclose(in);
+ /* open for reading */
+ *fp = fmemopen(*buf, size, "rb");
+ return 0;
+}
+
static
int ctf_open_trace_metadata_read(struct ctf_trace *td)
{
struct ctf_scanner *scanner;
FILE *fp;
+ char *buf = NULL;
int ret = 0;
td->metadata.pos.fd = openat(td->dirfd, "metadata", O_RDONLY);
goto end_stream;
}
+ if (packet_metadata(td, fp)) {
+ ret = ctf_open_trace_metadata_stream_read(td, &fp, &buf);
+ if (ret)
+ goto end_packet_read;
+ }
+
scanner = ctf_scanner_alloc(fp);
if (!scanner) {
fprintf(stdout, "[error] Error allocating scanner\n");
end:
ctf_scanner_free(scanner);
end_scanner_alloc:
+end_packet_read:
fclose(fp);
+ free(buf);
end_stream:
close(td->metadata.pos.fd);
return ret;
}
/* check uuid */
- len_index = struct_declaration_lookup_field_index(td->packet_header->declaration, g_quark_from_static_string("trace_uuid"));
+ len_index = struct_declaration_lookup_field_index(td->packet_header->declaration, g_quark_from_static_string("uuid"));
if (len_index >= 0) {
struct definition_array *defarray;
struct definition *field;
fprintf(stdout, "[error] Stream %" PRIu64 " is not declared in metadata.\n", stream_id);
return -EINVAL;
}
- file_stream->stream = stream;
+ file_stream->stream.stream_class = stream;
}
first_packet = 0;
if (ret)
goto error_index;
/* Add stream file to stream class */
- g_ptr_array_add(file_stream->stream->files, file_stream);
+ g_ptr_array_add(file_stream->stream.stream_class->files, file_stream);
return 0;
error_index:
goto error_dirfd;
}
- td->streams = g_ptr_array_new();
-
/*
* Keep the metadata file separate.
*/
readdir_error:
free(dirent);
error_metadata:
- g_ptr_array_free(td->streams, TRUE);
close(td->dirfd);
error_dirfd:
closedir(td->dir);
projects / babeltrace.git / blobdiff