X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=blobdiff_plain;f=formats%2Fctf%2Fctf.c;h=41aa35d60fd6a67e23b128a60a258ed03215bab2;hp=a418a6d507d4f1f33051495bdd3c95ada513f5ae;hb=4152822bf555f86a1dce28cb6755ff0849c3a75a;hpb=58b0b8835f84f2a028328e02eb5044640880d1e5 diff --git a/formats/ctf/ctf.c b/formats/ctf/ctf.c index a418a6d5..41aa35d6 100644 --- a/formats/ctf/ctf.c +++ b/formats/ctf/ctf.c @@ -21,9 +21,11 @@ #include #include #include +#include #include #include #include +#include #include #include #include @@ -44,6 +46,10 @@ #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); @@ -57,8 +63,8 @@ rw_dispatch read_dispatch_table[] = { [ 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 @@ -69,8 +75,8 @@ rw_dispatch write_dispatch_table[] = { [ 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 @@ -79,6 +85,166 @@ struct format ctf_format = { .close_trace = ctf_close_trace, }; +static +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 ret; + + if (pos->offset == EOF) + return 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 */ + 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; + + 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; + } + } + } + } + + /* 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 *stream) +{ + struct ctf_stream_class *stream_class = stream->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; @@ -100,12 +266,13 @@ void ctf_init_pos(struct ctf_stream_pos *pos, int fd, int open_flags) 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, SEEK_SET); /* position for write */ break; @@ -138,9 +305,6 @@ void ctf_move_pos_slow(struct ctf_stream_pos *pos, size_t offset, int whence) off_t off; struct packet_index *index; - /* Only allow random seek in read mode */ - assert(pos->prot != PROT_WRITE || whence == SEEK_CUR); - if (pos->prot == PROT_WRITE && pos->content_size_loc) *pos->content_size_loc = pos->offset; @@ -160,18 +324,23 @@ void ctf_move_pos_slow(struct ctf_stream_pos *pos, size_t offset, int whence) * 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 { @@ -189,7 +358,7 @@ void ctf_move_pos_slow(struct ctf_stream_pos *pos, size_t offset, int whence) assert(0); } if (pos->cur_index >= pos->packet_index->len) { - pos->offset = -EOF; + pos->offset = EOF; return; } index = &g_array_index(pos->packet_index, struct packet_index, @@ -211,15 +380,142 @@ void ctf_move_pos_slow(struct ctf_stream_pos *pos, size_t offset, int whence) } } -/* - * 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); @@ -238,6 +534,12 @@ int ctf_open_trace_metadata_read(struct ctf_trace *td) 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"); @@ -272,7 +574,9 @@ int ctf_open_trace_metadata_read(struct ctf_trace *td) end: ctf_scanner_free(scanner); end_scanner_alloc: +end_packet_read: fclose(fp); + free(buf); end_stream: close(td->metadata.pos.fd); return ret; @@ -283,7 +587,7 @@ static 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; @@ -330,14 +634,14 @@ int create_stream_packet_index(struct ctf_trace *td, 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); @@ -346,16 +650,16 @@ int create_stream_packet_index(struct ctf_trace *td, } /* 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 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); @@ -379,11 +683,11 @@ int create_stream_packet_index(struct ctf_trace *td, 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; } @@ -404,7 +708,7 @@ int create_stream_packet_index(struct ctf_trace *td, 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; @@ -417,11 +721,11 @@ int create_stream_packet_index(struct ctf_trace *td, 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 { @@ -433,11 +737,11 @@ int create_stream_packet_index(struct ctf_trace *td, 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 { @@ -498,7 +802,7 @@ int ctf_open_file_stream_read(struct ctf_trace *td, const char *path, int flags) 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: @@ -534,8 +838,6 @@ int ctf_open_trace_read(struct ctf_trace *td, const char *path, int flags) goto error_dirfd; } - td->streams = g_ptr_array_new(); - /* * Keep the metadata file separate. */ @@ -564,7 +866,8 @@ int ctf_open_trace_read(struct ctf_trace *td, const char *path, int flags) } 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; @@ -581,7 +884,6 @@ int ctf_open_trace_read(struct ctf_trace *td, const char *path, int flags) readdir_error: free(dirent); error_metadata: - g_ptr_array_free(td->streams, TRUE); close(td->dirfd); error_dirfd: closedir(td->dir); @@ -606,7 +908,7 @@ struct trace_descriptor *ctf_open_trace(const char *path, int 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; default: @@ -634,7 +936,7 @@ void ctf_close_trace(struct trace_descriptor *tdp) 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++) {