struct trace_descriptor *ctf_open_trace(const char *path, int flags);
void ctf_close_trace(struct trace_descriptor *descriptor);
-static rw_dispatch read_dispatch_table[] = {
+static
+rw_dispatch read_dispatch_table[] = {
[ CTF_TYPE_INTEGER ] = ctf_integer_read,
[ CTF_TYPE_FLOAT ] = ctf_float_read,
[ CTF_TYPE_ENUM ] = ctf_enum_read,
[ CTF_TYPE_SEQUENCE ] = ctf_sequence_rw,
};
-static rw_dispatch write_dispatch_table[] = {
+static
+rw_dispatch write_dispatch_table[] = {
[ CTF_TYPE_INTEGER ] = ctf_integer_write,
[ CTF_TYPE_FLOAT ] = ctf_float_write,
[ CTF_TYPE_ENUM ] = ctf_enum_write,
[ CTF_TYPE_SEQUENCE ] = ctf_sequence_rw,
};
+static
struct format ctf_format = {
.open_trace = ctf_open_trace,
.close_trace = ctf_close_trace,
};
+static
+int ctf_read_event(struct stream_pos *ppos, struct ctf_stream_class *stream_class)
+{
+ struct ctf_stream_pos *pos =
+ container_of(ppos, struct ctf_stream_pos, parent);
+ struct ctf_event *event_class;
+ uint64_t id = 0;
+ int len_index;
+ int ret;
+
+ if (pos->offset == EOF)
+ return EOF;
+
+ /* Read event header */
+ if (stream_class->event_header) {
+ 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;
+
+ 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 */
+ }
+ }
+
+ /* Read stream-declared event context */
+ if (stream_class->event_context) {
+ ret = generic_rw(ppos, &stream_class->event_context->p);
+ if (ret)
+ goto error;
+ }
+
+ if (id >= stream_class->events_by_id->len) {
+ fprintf(stdout, "[error] Event id %" PRIu64 " is outside range.\n", id);
+ return -EINVAL;
+ }
+ event_class = g_ptr_array_index(stream_class->events_by_id, id);
+ if (!event_class) {
+ fprintf(stdout, "[error] Event id %" PRIu64 " is unknown.\n", id);
+ return -EINVAL;
+ }
+
+ /* Read event-declared event context */
+ if (event_class->context) {
+ ret = generic_rw(ppos, &event_class->context->p);
+ if (ret)
+ goto error;
+ }
+
+ /* Read event payload */
+ if (event_class->fields) {
+ ret = generic_rw(ppos, &event_class->fields->p);
+ if (ret)
+ goto error;
+ }
+
+ return 0;
+
+error:
+ fprintf(stdout, "[error] Unexpected end of stream. Either the trace data stream is corrupted or metadata description does not match data layout.\n");
+ return ret;
+}
+
+static
+int ctf_write_event(struct stream_pos *pos, struct ctf_stream_class *stream_class)
+{
+ struct ctf_event *event_class;
+ uint64_t id = 0;
+ int len_index;
+ int ret;
+
+ /* print event header */
+ if (stream_class->event_header) {
+ /* 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;
+
+ 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 */
+ }
+
+ ret = generic_rw(pos, &stream_class->event_header->p);
+ if (ret)
+ goto error;
+ }
+
+ /* print stream-declared event context */
+ if (stream_class->event_context) {
+ ret = generic_rw(pos, &stream_class->event_context->p);
+ if (ret)
+ goto error;
+ }
+
+ if (id >= stream_class->events_by_id->len) {
+ fprintf(stdout, "[error] Event id %" PRIu64 " is outside range.\n", id);
+ return -EINVAL;
+ }
+ event_class = g_ptr_array_index(stream_class->events_by_id, id);
+ if (!event_class) {
+ fprintf(stdout, "[error] Event id %" PRIu64 " is unknown.\n", id);
+ return -EINVAL;
+ }
+
+ /* print event-declared event context */
+ if (event_class->context) {
+ ret = generic_rw(pos, &event_class->context->p);
+ if (ret)
+ goto error;
+ }
+
+ /* Read and print event payload */
+ if (event_class->fields) {
+ ret = generic_rw(pos, &event_class->fields->p);
+ if (ret)
+ goto error;
+ }
+
+ return 0;
+
+error:
+ fprintf(stdout, "[error] Unexpected end of stream. Either the trace data stream is corrupted or metadata description does not match data layout.\n");
+ return ret;
+}
+
void ctf_init_pos(struct ctf_stream_pos *pos, int fd, int open_flags)
{
pos->fd = fd;
sizeof(struct packet_index));
else
pos->packet_index = NULL;
-
switch (open_flags & O_ACCMODE) {
case O_RDONLY:
pos->prot = PROT_READ;
pos->flags = MAP_PRIVATE;
pos->parent.rw_table = read_dispatch_table;
+ pos->parent.event_cb = ctf_read_event;
break;
- case O_WRONLY:
case O_RDWR:
pos->prot = PROT_WRITE; /* Write has priority */
pos->flags = MAP_SHARED;
pos->parent.rw_table = write_dispatch_table;
+ pos->parent.event_cb = ctf_write_event;
if (fd >= 0)
- ctf_move_pos_slow(pos, 0); /* position for write */
+ ctf_move_pos_slow(pos, 0, SEEK_SET); /* position for write */
break;
default:
assert(0);
(void) g_array_free(pos->packet_index, TRUE);
}
-void ctf_move_pos_slow(struct ctf_stream_pos *pos, size_t offset)
+void ctf_move_pos_slow(struct ctf_stream_pos *pos, size_t offset, int whence)
{
int ret;
off_t off;
struct packet_index *index;
-
if (pos->prot == PROT_WRITE && pos->content_size_loc)
*pos->content_size_loc = pos->offset;
strerror(errno));
assert(0);
}
+ pos->base = NULL;
}
/*
* except to get exactly at the beginning of the next packet.
*/
if (pos->prot == PROT_WRITE) {
- /* The writer will add padding */
- assert(pos->offset + offset == pos->packet_size);
-
- /*
- * Don't increment for initial stream move (only condition where
- * pos->offset can be 0.
- */
- if (pos->offset)
+ switch (whence) {
+ case SEEK_CUR:
+ /* The writer will add padding */
+ assert(pos->offset + offset == pos->packet_size);
pos->mmap_offset += WRITE_PACKET_LEN / CHAR_BIT;
+ break;
+ case SEEK_SET:
+ assert(offset == 0); /* only seek supported for now */
+ pos->cur_index = 0;
+ break;
+ default:
+ assert(0);
+ }
pos->content_size = -1U; /* Unknown at this point */
pos->packet_size = WRITE_PACKET_LEN;
- off = posix_fallocate(pos->fd, pos->mmap_offset, pos->packet_size / CHAR_BIT);
+ off = posix_fallocate(pos->fd, pos->mmap_offset,
+ pos->packet_size / CHAR_BIT);
assert(off >= 0);
+ pos->offset = 0;
} else {
- /* The reader will expect us to skip padding */
- assert(pos->offset + offset == pos->content_size);
-
- /*
- * Don't increment for initial stream move (only condition where
- * pos->offset can be 0).
- */
- if (pos->offset)
+ switch (whence) {
+ case SEEK_CUR:
+ /* The reader will expect us to skip padding */
+ assert(pos->offset + offset == pos->content_size);
++pos->cur_index;
+ break;
+ case SEEK_SET:
+ assert(offset == 0); /* only seek supported for now */
+ pos->cur_index = 0;
+ break;
+ default:
+ assert(0);
+ }
+ if (pos->cur_index >= pos->packet_index->len) {
+ pos->offset = EOF;
+ return;
+ }
index = &g_array_index(pos->packet_index, struct packet_index,
pos->cur_index);
pos->mmap_offset = index->offset;
/* Lookup context/packet size in index */
pos->content_size = index->content_size;
pos->packet_size = index->packet_size;
+ pos->offset = index->data_offset;
}
/* map new base. Need mapping length from header. */
pos->base = mmap(NULL, pos->packet_size / CHAR_BIT, pos->prot,
pos->flags, pos->fd, pos->mmap_offset);
- pos->offset = 0;
+ if (pos->base == MAP_FAILED) {
+ fprintf(stdout, "[error] mmap error %s.\n",
+ strerror(errno));
+ assert(0);
+ }
}
/*
int create_stream_packet_index(struct ctf_trace *td,
struct ctf_file_stream *file_stream)
{
- struct ctf_stream *stream;
+ struct ctf_stream_class *stream;
int len_index;
struct ctf_stream_pos *pos;
struct stat filestats;
/* read and check header, set stream id (and check) */
if (td->packet_header) {
/* Read packet header */
- generic_rw(&pos->parent, &td->packet_header->p);
-
+ ret = generic_rw(&pos->parent, &td->packet_header->p);
+ if (ret)
+ return ret;
len_index = struct_declaration_lookup_field_index(td->packet_header->declaration, g_quark_from_static_string("magic"));
if (len_index >= 0) {
struct definition_integer *defint;
- struct field *field;
+ struct definition *field;
field = struct_definition_get_field_from_index(td->packet_header, len_index);
- assert(field->definition->declaration->id == CTF_TYPE_INTEGER);
- defint = container_of(field->definition, struct definition_integer, p);
+ assert(field->declaration->id == CTF_TYPE_INTEGER);
+ defint = container_of(field, struct definition_integer, p);
assert(defint->declaration->signedness == FALSE);
if (defint->value._unsigned != CTF_MAGIC) {
- fprintf(stdout, "[error] Invalid magic number %" PRIX64 " at packet %u (file offset %zd).\n",
+ fprintf(stdout, "[error] Invalid magic number 0x%" PRIX64 " at packet %u (file offset %zd).\n",
defint->value._unsigned,
file_stream->pos.packet_index->len,
(ssize_t) pos->mmap_offset);
len_index = struct_declaration_lookup_field_index(td->packet_header->declaration, g_quark_from_static_string("trace_uuid"));
if (len_index >= 0) {
struct definition_array *defarray;
- struct field *field;
+ struct definition *field;
uint64_t i;
uint8_t uuidval[UUID_LEN];
field = struct_definition_get_field_from_index(td->packet_header, len_index);
- assert(field->definition->declaration->id == CTF_TYPE_ARRAY);
- defarray = container_of(field->definition, struct definition_array, p);
+ assert(field->declaration->id == CTF_TYPE_ARRAY);
+ defarray = container_of(field, struct definition_array, p);
assert(array_len(defarray) == UUID_LEN);
assert(defarray->declaration->elem->id == CTF_TYPE_INTEGER);
len_index = struct_declaration_lookup_field_index(td->packet_header->declaration, g_quark_from_static_string("stream_id"));
if (len_index >= 0) {
struct definition_integer *defint;
- struct field *field;
+ struct definition *field;
field = struct_definition_get_field_from_index(td->packet_header, len_index);
- assert(field->definition->declaration->id == CTF_TYPE_INTEGER);
- defint = container_of(field->definition, struct definition_integer, p);
+ assert(field->declaration->id == CTF_TYPE_INTEGER);
+ defint = container_of(field, struct definition_integer, p);
assert(defint->declaration->signedness == FALSE);
stream_id = defint->value._unsigned;
}
if (stream->packet_context) {
/* Read packet context */
- generic_rw(&pos->parent, &stream->packet_context->p);
-
+ ret = generic_rw(&pos->parent, &stream->packet_context->p);
+ if (ret)
+ return ret;
/* read content size from header */
len_index = struct_declaration_lookup_field_index(stream->packet_context->declaration, g_quark_from_static_string("content_size"));
if (len_index >= 0) {
struct definition_integer *defint;
- struct field *field;
+ struct definition *field;
field = struct_definition_get_field_from_index(stream->packet_context, len_index);
- assert(field->definition->declaration->id == CTF_TYPE_INTEGER);
- defint = container_of(field->definition, struct definition_integer, p);
+ assert(field->declaration->id == CTF_TYPE_INTEGER);
+ defint = container_of(field, struct definition_integer, p);
assert(defint->declaration->signedness == FALSE);
packet_index.content_size = defint->value._unsigned;
} else {
len_index = struct_declaration_lookup_field_index(stream->packet_context->declaration, g_quark_from_static_string("packet_size"));
if (len_index >= 0) {
struct definition_integer *defint;
- struct field *field;
+ struct definition *field;
field = struct_definition_get_field_from_index(stream->packet_context, len_index);
- assert(field->definition->declaration->id == CTF_TYPE_INTEGER);
- defint = container_of(field->definition, struct definition_integer, p);
+ assert(field->declaration->id == CTF_TYPE_INTEGER);
+ defint = container_of(field, struct definition_integer, p);
assert(defint->declaration->signedness == FALSE);
packet_index.packet_size = defint->value._unsigned;
} else {
packet_index.packet_size = packet_index.content_size ? : filestats.st_size * CHAR_BIT;
}
+ /* Validate content size and packet size values */
+ if (packet_index.content_size > packet_index.packet_size) {
+ fprintf(stdout, "[error] Content size (%zu bits) is larger than packet size (%zu bits).\n",
+ packet_index.content_size, packet_index.packet_size);
+ return -EINVAL;
+ }
+
+ if (packet_index.packet_size > (filestats.st_size - packet_index.offset) * CHAR_BIT) {
+ fprintf(stdout, "[error] Packet size (%zu bits) is larger than remaining file size (%zu bits).\n",
+ packet_index.content_size, (filestats.st_size - packet_index.offset) * CHAR_BIT);
+ return -EINVAL;
+ }
+
+ /* Save position after header and context */
+ packet_index.data_offset = pos->offset;
+
/* add index to packet array */
g_array_append_val(file_stream->pos.packet_index, packet_index);
pos->mmap_offset += packet_index.packet_size / CHAR_BIT;
}
+ /* Move pos back to beginning of file */
+ ctf_move_pos_slow(pos, 0, SEEK_SET); /* position for write */
+
return 0;
}
}
if (!diriter)
break;
- if (!strcmp(diriter->d_name, ".")
+ /* Ignore hidden files, ., .. and metadata. */
+ if (!strncmp(diriter->d_name, ".", 1)
|| !strcmp(diriter->d_name, "..")
|| !strcmp(diriter->d_name, "metadata"))
continue;
return ret;
}
-static
-int ctf_open_trace_write(struct ctf_trace *td, const char *path, int flags)
-{
- int ret;
-
- ret = mkdir(path, S_IRWXU|S_IRWXG);
- if (ret)
- return ret;
-
- /* Open trace directory */
- td->dir = opendir(path);
- if (!td->dir) {
- fprintf(stdout, "[error] Unable to open trace directory.\n");
- ret = -ENOENT;
- goto error;
- }
-
-
- return 0;
-
-error:
- return ret;
-}
-
struct trace_descriptor *ctf_open_trace(const char *path, int flags)
{
struct ctf_trace *td;
switch (flags & O_ACCMODE) {
case O_RDONLY:
+ if (!path) {
+ fprintf(stdout, "[error] Path missing for input CTF trace.\n");
+ goto error;
+ }
ret = ctf_open_trace_read(td, path, flags);
if (ret)
goto error;
break;
- case O_WRONLY:
+ case O_RDWR:
fprintf(stdout, "[error] Opening CTF traces for output is not supported yet.\n");
goto error;
-#if 0
- ret = ctf_open_trace_write(td, path, flags);
- if (ret)
- goto error;
-#endif //0
- break;
default:
fprintf(stdout, "[error] Incorrect open flags.\n");
goto error;
if (td->streams) {
for (i = 0; i < td->streams->len; i++) {
- struct ctf_stream *stream;
+ struct ctf_stream_class *stream;
int j;
-
stream = g_ptr_array_index(td->streams, i);
for (j = 0; j < stream->files->len; j++) {
struct ctf_file_stream *file_stream;
- file_stream = g_ptr_array_index(td->streams, j);
+ file_stream = g_ptr_array_index(stream->files, j);
ctf_close_file_stream(file_stream);
}
projects / babeltrace.git / blobdiff