Commit | Line | Data |
---|---|---|
fc93b2bd MD |
1 | /* |
2 | * BabelTrace - Common Trace Format (CTF) | |
3 | * | |
4 | * Format registration. | |
5 | * | |
c054553d | 6 | * Copyright 2010, 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
fc93b2bd | 7 | * |
ccd7e1c8 MD |
8 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
9 | * of this software and associated documentation files (the "Software"), to deal | |
10 | * in the Software without restriction, including without limitation the rights | |
11 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
12 | * copies of the Software, and to permit persons to whom the Software is | |
13 | * furnished to do so, subject to the following conditions: | |
fc93b2bd | 14 | * |
ccd7e1c8 MD |
15 | * The above copyright notice and this permission notice shall be included in |
16 | * all copies or substantial portions of the Software. | |
fc93b2bd MD |
17 | */ |
18 | ||
19 | #include <babeltrace/format.h> | |
20 | #include <babeltrace/ctf/types.h> | |
bbefb8dd | 21 | #include <babeltrace/ctf/metadata.h> |
65102a8c | 22 | #include <babeltrace/babeltrace.h> |
0f980a35 MD |
23 | #include <inttypes.h> |
24 | #include <uuid/uuid.h> | |
25 | #include <sys/mman.h> | |
bbefb8dd | 26 | #include <errno.h> |
bbefb8dd | 27 | #include <sys/types.h> |
65102a8c | 28 | #include <sys/stat.h> |
bbefb8dd | 29 | #include <fcntl.h> |
65102a8c | 30 | #include <dirent.h> |
bbefb8dd | 31 | #include <glib.h> |
65102a8c MD |
32 | #include <unistd.h> |
33 | #include <stdlib.h> | |
34 | ||
65102a8c MD |
35 | #include "metadata/ctf-scanner.h" |
36 | #include "metadata/ctf-parser.h" | |
37 | #include "metadata/ctf-ast.h" | |
38 | ||
0f980a35 MD |
39 | /* |
40 | * We currently simply map a page to read the packet header and packet | |
8c572eba | 41 | * context to get the packet length and content length. (in bits) |
0f980a35 | 42 | */ |
8c572eba MD |
43 | #define MAX_PACKET_HEADER_LEN (getpagesize() * CHAR_BIT) |
44 | #define WRITE_PACKET_LEN (getpagesize() * 8 * CHAR_BIT) | |
0f980a35 MD |
45 | #define UUID_LEN 16 /* uuid by value len */ |
46 | ||
65102a8c | 47 | extern int yydebug; |
bbefb8dd | 48 | |
bbefb8dd MD |
49 | struct trace_descriptor *ctf_open_trace(const char *path, int flags); |
50 | void ctf_close_trace(struct trace_descriptor *descriptor); | |
fc93b2bd | 51 | |
1ae19169 MD |
52 | static |
53 | rw_dispatch read_dispatch_table[] = { | |
d11e9c49 MD |
54 | [ CTF_TYPE_INTEGER ] = ctf_integer_read, |
55 | [ CTF_TYPE_FLOAT ] = ctf_float_read, | |
56 | [ CTF_TYPE_ENUM ] = ctf_enum_read, | |
57 | [ CTF_TYPE_STRING ] = ctf_string_read, | |
58 | [ CTF_TYPE_STRUCT ] = ctf_struct_rw, | |
59 | [ CTF_TYPE_VARIANT ] = ctf_variant_rw, | |
60 | [ CTF_TYPE_ARRAY ] = ctf_array_rw, | |
61 | [ CTF_TYPE_SEQUENCE ] = ctf_sequence_rw, | |
62 | }; | |
63 | ||
1ae19169 MD |
64 | static |
65 | rw_dispatch write_dispatch_table[] = { | |
d11e9c49 MD |
66 | [ CTF_TYPE_INTEGER ] = ctf_integer_write, |
67 | [ CTF_TYPE_FLOAT ] = ctf_float_write, | |
68 | [ CTF_TYPE_ENUM ] = ctf_enum_write, | |
69 | [ CTF_TYPE_STRING ] = ctf_string_write, | |
70 | [ CTF_TYPE_STRUCT ] = ctf_struct_rw, | |
71 | [ CTF_TYPE_VARIANT ] = ctf_variant_rw, | |
72 | [ CTF_TYPE_ARRAY ] = ctf_array_rw, | |
73 | [ CTF_TYPE_SEQUENCE ] = ctf_sequence_rw, | |
74 | }; | |
75 | ||
1ae19169 | 76 | static |
d11e9c49 | 77 | struct format ctf_format = { |
bbefb8dd MD |
78 | .open_trace = ctf_open_trace, |
79 | .close_trace = ctf_close_trace, | |
fc93b2bd MD |
80 | }; |
81 | ||
8563e754 | 82 | void ctf_init_pos(struct ctf_stream_pos *pos, int fd, int open_flags) |
8c572eba MD |
83 | { |
84 | pos->fd = fd; | |
85 | pos->mmap_offset = 0; | |
86 | pos->packet_size = 0; | |
87 | pos->content_size = 0; | |
88 | pos->content_size_loc = NULL; | |
89 | pos->base = NULL; | |
90 | pos->offset = 0; | |
91 | pos->dummy = false; | |
8c572eba | 92 | pos->cur_index = 0; |
8563e754 MD |
93 | if (fd >= 0) |
94 | pos->packet_index = g_array_new(FALSE, TRUE, | |
95 | sizeof(struct packet_index)); | |
96 | else | |
97 | pos->packet_index = NULL; | |
8563e754 MD |
98 | switch (open_flags & O_ACCMODE) { |
99 | case O_RDONLY: | |
100 | pos->prot = PROT_READ; | |
101 | pos->flags = MAP_PRIVATE; | |
102 | pos->parent.rw_table = read_dispatch_table; | |
103 | break; | |
104 | case O_WRONLY: | |
105 | case O_RDWR: | |
106 | pos->prot = PROT_WRITE; /* Write has priority */ | |
107 | pos->flags = MAP_SHARED; | |
108 | pos->parent.rw_table = write_dispatch_table; | |
109 | if (fd >= 0) | |
847bf71a | 110 | ctf_move_pos_slow(pos, 0, SEEK_SET); /* position for write */ |
8563e754 MD |
111 | break; |
112 | default: | |
113 | assert(0); | |
8c572eba MD |
114 | } |
115 | } | |
116 | ||
46322b33 | 117 | void ctf_fini_pos(struct ctf_stream_pos *pos) |
8c572eba MD |
118 | { |
119 | int ret; | |
120 | ||
121 | if (pos->prot == PROT_WRITE && pos->content_size_loc) | |
122 | *pos->content_size_loc = pos->offset; | |
123 | if (pos->base) { | |
124 | /* unmap old base */ | |
125 | ret = munmap(pos->base, pos->packet_size / CHAR_BIT); | |
126 | if (ret) { | |
46322b33 | 127 | fprintf(stdout, "[error] Unable to unmap old base: %s.\n", |
8c572eba MD |
128 | strerror(errno)); |
129 | assert(0); | |
130 | } | |
131 | } | |
132 | (void) g_array_free(pos->packet_index, TRUE); | |
133 | } | |
134 | ||
847bf71a | 135 | void ctf_move_pos_slow(struct ctf_stream_pos *pos, size_t offset, int whence) |
0f980a35 MD |
136 | { |
137 | int ret; | |
8c572eba MD |
138 | off_t off; |
139 | struct packet_index *index; | |
0f980a35 | 140 | |
847bf71a MD |
141 | /* Only allow random seek in read mode */ |
142 | assert(pos->prot != PROT_WRITE || whence == SEEK_CUR); | |
8c572eba MD |
143 | |
144 | if (pos->prot == PROT_WRITE && pos->content_size_loc) | |
145 | *pos->content_size_loc = pos->offset; | |
0f980a35 MD |
146 | |
147 | if (pos->base) { | |
148 | /* unmap old base */ | |
8c572eba | 149 | ret = munmap(pos->base, pos->packet_size / CHAR_BIT); |
0f980a35 | 150 | if (ret) { |
46322b33 | 151 | fprintf(stdout, "[error] Unable to unmap old base: %s.\n", |
0f980a35 MD |
152 | strerror(errno)); |
153 | assert(0); | |
154 | } | |
847bf71a | 155 | pos->base = NULL; |
0f980a35 MD |
156 | } |
157 | ||
8c572eba | 158 | /* |
46322b33 | 159 | * The caller should never ask for ctf_move_pos across packets, |
8c572eba MD |
160 | * except to get exactly at the beginning of the next packet. |
161 | */ | |
162 | if (pos->prot == PROT_WRITE) { | |
163 | /* The writer will add padding */ | |
164 | assert(pos->offset + offset == pos->packet_size); | |
165 | ||
166 | /* | |
167 | * Don't increment for initial stream move (only condition where | |
168 | * pos->offset can be 0. | |
169 | */ | |
170 | if (pos->offset) | |
171 | pos->mmap_offset += WRITE_PACKET_LEN / CHAR_BIT; | |
172 | pos->content_size = -1U; /* Unknown at this point */ | |
173 | pos->packet_size = WRITE_PACKET_LEN; | |
174 | off = posix_fallocate(pos->fd, pos->mmap_offset, pos->packet_size / CHAR_BIT); | |
175 | assert(off >= 0); | |
847bf71a | 176 | pos->offset = 0; |
8c572eba | 177 | } else { |
847bf71a MD |
178 | switch (whence) { |
179 | case SEEK_CUR: | |
180 | /* The reader will expect us to skip padding */ | |
181 | assert(pos->offset + offset == pos->content_size); | |
8c572eba | 182 | ++pos->cur_index; |
847bf71a MD |
183 | break; |
184 | case SEEK_SET: | |
185 | assert(offset == 0); /* only seek supported for now */ | |
186 | pos->cur_index = 0; | |
187 | break; | |
188 | default: | |
189 | assert(0); | |
190 | } | |
191 | if (pos->cur_index >= pos->packet_index->len) { | |
192 | pos->offset = -EOF; | |
193 | return; | |
194 | } | |
8c572eba MD |
195 | index = &g_array_index(pos->packet_index, struct packet_index, |
196 | pos->cur_index); | |
197 | pos->mmap_offset = index->offset; | |
198 | ||
199 | /* Lookup context/packet size in index */ | |
200 | pos->content_size = index->content_size; | |
201 | pos->packet_size = index->packet_size; | |
847bf71a | 202 | pos->offset = index->data_offset; |
8c572eba | 203 | } |
0f980a35 | 204 | /* map new base. Need mapping length from header. */ |
8c572eba MD |
205 | pos->base = mmap(NULL, pos->packet_size / CHAR_BIT, pos->prot, |
206 | pos->flags, pos->fd, pos->mmap_offset); | |
847bf71a MD |
207 | if (pos->base == MAP_FAILED) { |
208 | fprintf(stdout, "[error] mmap error %s.\n", | |
209 | strerror(errno)); | |
210 | assert(0); | |
211 | } | |
0f980a35 MD |
212 | } |
213 | ||
65102a8c MD |
214 | /* |
215 | * TODO: for now, we treat the metadata file as a simple text file | |
216 | * (without any header nor packets nor padding). | |
217 | */ | |
218 | static | |
46322b33 | 219 | int ctf_open_trace_metadata_read(struct ctf_trace *td) |
65102a8c MD |
220 | { |
221 | struct ctf_scanner *scanner; | |
222 | FILE *fp; | |
223 | int ret = 0; | |
224 | ||
46322b33 MD |
225 | td->metadata.pos.fd = openat(td->dirfd, "metadata", O_RDONLY); |
226 | if (td->metadata.pos.fd < 0) { | |
65102a8c | 227 | fprintf(stdout, "Unable to open metadata.\n"); |
46322b33 | 228 | return td->metadata.pos.fd; |
65102a8c MD |
229 | } |
230 | ||
231 | if (babeltrace_debug) | |
232 | yydebug = 1; | |
233 | ||
46322b33 | 234 | fp = fdopen(td->metadata.pos.fd, "r"); |
65102a8c | 235 | if (!fp) { |
46322b33 | 236 | fprintf(stdout, "[error] Unable to open metadata stream.\n"); |
65102a8c MD |
237 | ret = -errno; |
238 | goto end_stream; | |
239 | } | |
240 | ||
241 | scanner = ctf_scanner_alloc(fp); | |
242 | if (!scanner) { | |
46322b33 | 243 | fprintf(stdout, "[error] Error allocating scanner\n"); |
65102a8c MD |
244 | ret = -ENOMEM; |
245 | goto end_scanner_alloc; | |
246 | } | |
247 | ret = ctf_scanner_append_ast(scanner); | |
248 | if (ret) { | |
46322b33 | 249 | fprintf(stdout, "[error] Error creating AST\n"); |
65102a8c MD |
250 | goto end; |
251 | } | |
252 | ||
253 | if (babeltrace_debug) { | |
254 | ret = ctf_visitor_print_xml(stdout, 0, &scanner->ast->root); | |
255 | if (ret) { | |
46322b33 | 256 | fprintf(stdout, "[error] Error visiting AST for XML output\n"); |
65102a8c MD |
257 | goto end; |
258 | } | |
259 | } | |
260 | ||
261 | ret = ctf_visitor_semantic_check(stdout, 0, &scanner->ast->root); | |
262 | if (ret) { | |
46322b33 | 263 | fprintf(stdout, "[error] Error in CTF semantic validation %d\n", ret); |
65102a8c MD |
264 | goto end; |
265 | } | |
266 | ret = ctf_visitor_construct_metadata(stdout, 0, &scanner->ast->root, | |
46322b33 | 267 | td, BYTE_ORDER); |
65102a8c | 268 | if (ret) { |
46322b33 | 269 | fprintf(stdout, "[error] Error in CTF metadata constructor %d\n", ret); |
65102a8c MD |
270 | goto end; |
271 | } | |
272 | end: | |
273 | ctf_scanner_free(scanner); | |
274 | end_scanner_alloc: | |
275 | fclose(fp); | |
276 | end_stream: | |
46322b33 | 277 | close(td->metadata.pos.fd); |
0f980a35 MD |
278 | return ret; |
279 | } | |
280 | ||
281 | ||
282 | static | |
46322b33 | 283 | int create_stream_packet_index(struct ctf_trace *td, |
0f980a35 MD |
284 | struct ctf_file_stream *file_stream) |
285 | { | |
286 | struct ctf_stream *stream; | |
287 | int len_index; | |
46322b33 | 288 | struct ctf_stream_pos *pos; |
0f980a35 MD |
289 | struct stat filestats; |
290 | struct packet_index packet_index; | |
291 | int first_packet = 1; | |
292 | int ret; | |
293 | ||
294 | pos = &file_stream->pos; | |
295 | ||
296 | ret = fstat(pos->fd, &filestats); | |
297 | if (ret < 0) | |
298 | return ret; | |
299 | ||
300 | for (pos->mmap_offset = 0; pos->mmap_offset < filestats.st_size; ) { | |
301 | uint64_t stream_id = 0; | |
302 | ||
303 | if (pos->base) { | |
304 | /* unmap old base */ | |
8c572eba | 305 | ret = munmap(pos->base, pos->packet_size / CHAR_BIT); |
0f980a35 | 306 | if (ret) { |
46322b33 | 307 | fprintf(stdout, "[error] Unable to unmap old base: %s.\n", |
0f980a35 MD |
308 | strerror(errno)); |
309 | return ret; | |
310 | } | |
8c572eba | 311 | pos->base = NULL; |
0f980a35 MD |
312 | } |
313 | /* map new base. Need mapping length from header. */ | |
8c572eba | 314 | pos->base = mmap(NULL, MAX_PACKET_HEADER_LEN / CHAR_BIT, PROT_READ, |
0f980a35 | 315 | MAP_PRIVATE, pos->fd, pos->mmap_offset); |
dc48ecad MD |
316 | pos->content_size = MAX_PACKET_HEADER_LEN; /* Unknown at this point */ |
317 | pos->packet_size = MAX_PACKET_HEADER_LEN; /* Unknown at this point */ | |
0f980a35 MD |
318 | pos->offset = 0; /* Position of the packet header */ |
319 | ||
8c572eba MD |
320 | packet_index.offset = pos->mmap_offset; |
321 | packet_index.content_size = 0; | |
322 | packet_index.packet_size = 0; | |
323 | ||
0f980a35 | 324 | /* read and check header, set stream id (and check) */ |
46322b33 | 325 | if (td->packet_header) { |
0f980a35 | 326 | /* Read packet header */ |
d11e9c49 | 327 | generic_rw(&pos->parent, &td->packet_header->p); |
0f980a35 | 328 | |
46322b33 | 329 | len_index = struct_declaration_lookup_field_index(td->packet_header->declaration, g_quark_from_static_string("magic")); |
0f980a35 MD |
330 | if (len_index >= 0) { |
331 | struct definition_integer *defint; | |
332 | struct field *field; | |
333 | ||
46322b33 | 334 | field = struct_definition_get_field_from_index(td->packet_header, len_index); |
0f980a35 MD |
335 | assert(field->definition->declaration->id == CTF_TYPE_INTEGER); |
336 | defint = container_of(field->definition, struct definition_integer, p); | |
337 | assert(defint->declaration->signedness == FALSE); | |
338 | if (defint->value._unsigned != CTF_MAGIC) { | |
8c572eba MD |
339 | fprintf(stdout, "[error] Invalid magic number %" PRIX64 " at packet %u (file offset %zd).\n", |
340 | defint->value._unsigned, | |
341 | file_stream->pos.packet_index->len, | |
342 | (ssize_t) pos->mmap_offset); | |
0f980a35 MD |
343 | return -EINVAL; |
344 | } | |
345 | } | |
346 | ||
347 | /* check uuid */ | |
46322b33 | 348 | len_index = struct_declaration_lookup_field_index(td->packet_header->declaration, g_quark_from_static_string("trace_uuid")); |
0f980a35 MD |
349 | if (len_index >= 0) { |
350 | struct definition_array *defarray; | |
351 | struct field *field; | |
352 | uint64_t i; | |
353 | uint8_t uuidval[UUID_LEN]; | |
354 | ||
46322b33 | 355 | field = struct_definition_get_field_from_index(td->packet_header, len_index); |
0f980a35 MD |
356 | assert(field->definition->declaration->id == CTF_TYPE_ARRAY); |
357 | defarray = container_of(field->definition, struct definition_array, p); | |
3838df27 | 358 | assert(array_len(defarray) == UUID_LEN); |
0f980a35 MD |
359 | assert(defarray->declaration->elem->id == CTF_TYPE_INTEGER); |
360 | ||
361 | for (i = 0; i < UUID_LEN; i++) { | |
362 | struct definition *elem; | |
363 | struct definition_integer *defint; | |
364 | ||
365 | elem = array_index(defarray, i); | |
366 | assert(elem); | |
367 | defint = container_of(elem, struct definition_integer, p); | |
368 | uuidval[i] = defint->value._unsigned; | |
369 | } | |
46322b33 | 370 | ret = uuid_compare(td->uuid, uuidval); |
0f980a35 MD |
371 | if (ret) { |
372 | fprintf(stdout, "[error] Unique Universal Identifiers do not match.\n"); | |
373 | return -EINVAL; | |
374 | } | |
375 | } | |
376 | ||
377 | ||
46322b33 | 378 | len_index = struct_declaration_lookup_field_index(td->packet_header->declaration, g_quark_from_static_string("stream_id")); |
0f980a35 MD |
379 | if (len_index >= 0) { |
380 | struct definition_integer *defint; | |
381 | struct field *field; | |
382 | ||
46322b33 | 383 | field = struct_definition_get_field_from_index(td->packet_header, len_index); |
0f980a35 MD |
384 | assert(field->definition->declaration->id == CTF_TYPE_INTEGER); |
385 | defint = container_of(field->definition, struct definition_integer, p); | |
386 | assert(defint->declaration->signedness == FALSE); | |
387 | stream_id = defint->value._unsigned; | |
388 | } | |
389 | } | |
390 | ||
391 | if (!first_packet && file_stream->stream_id != stream_id) { | |
392 | fprintf(stdout, "[error] Stream ID is changing within a stream.\n"); | |
393 | return -EINVAL; | |
394 | } | |
395 | if (first_packet) { | |
396 | file_stream->stream_id = stream_id; | |
46322b33 | 397 | if (stream_id >= td->streams->len) { |
0f980a35 MD |
398 | fprintf(stdout, "[error] Stream %" PRIu64 " is not declared in metadata.\n", stream_id); |
399 | return -EINVAL; | |
400 | } | |
46322b33 | 401 | stream = g_ptr_array_index(td->streams, stream_id); |
0f980a35 MD |
402 | if (!stream) { |
403 | fprintf(stdout, "[error] Stream %" PRIu64 " is not declared in metadata.\n", stream_id); | |
404 | return -EINVAL; | |
405 | } | |
406 | file_stream->stream = stream; | |
407 | } | |
408 | first_packet = 0; | |
409 | ||
dc48ecad MD |
410 | if (stream->packet_context) { |
411 | /* Read packet context */ | |
d11e9c49 | 412 | generic_rw(&pos->parent, &stream->packet_context->p); |
dc48ecad MD |
413 | |
414 | /* read content size from header */ | |
415 | len_index = struct_declaration_lookup_field_index(stream->packet_context->declaration, g_quark_from_static_string("content_size")); | |
416 | if (len_index >= 0) { | |
417 | struct definition_integer *defint; | |
418 | struct field *field; | |
419 | ||
420 | field = struct_definition_get_field_from_index(stream->packet_context, len_index); | |
421 | assert(field->definition->declaration->id == CTF_TYPE_INTEGER); | |
422 | defint = container_of(field->definition, struct definition_integer, p); | |
423 | assert(defint->declaration->signedness == FALSE); | |
8c572eba | 424 | packet_index.content_size = defint->value._unsigned; |
dc48ecad MD |
425 | } else { |
426 | /* Use file size for packet size */ | |
8c572eba | 427 | packet_index.content_size = filestats.st_size * CHAR_BIT; |
dc48ecad MD |
428 | } |
429 | ||
430 | /* read packet size from header */ | |
431 | len_index = struct_declaration_lookup_field_index(stream->packet_context->declaration, g_quark_from_static_string("packet_size")); | |
432 | if (len_index >= 0) { | |
433 | struct definition_integer *defint; | |
434 | struct field *field; | |
435 | ||
436 | field = struct_definition_get_field_from_index(stream->packet_context, len_index); | |
437 | assert(field->definition->declaration->id == CTF_TYPE_INTEGER); | |
438 | defint = container_of(field->definition, struct definition_integer, p); | |
439 | assert(defint->declaration->signedness == FALSE); | |
8c572eba | 440 | packet_index.packet_size = defint->value._unsigned; |
dc48ecad MD |
441 | } else { |
442 | /* Use content size if non-zero, else file size */ | |
8c572eba | 443 | packet_index.packet_size = packet_index.content_size ? : filestats.st_size * CHAR_BIT; |
dc48ecad | 444 | } |
0f980a35 MD |
445 | } else { |
446 | /* Use file size for packet size */ | |
8c572eba | 447 | packet_index.content_size = filestats.st_size * CHAR_BIT; |
0f980a35 | 448 | /* Use content size if non-zero, else file size */ |
8c572eba | 449 | packet_index.packet_size = packet_index.content_size ? : filestats.st_size * CHAR_BIT; |
0f980a35 | 450 | } |
847bf71a MD |
451 | /* Save position after header and context */ |
452 | packet_index.data_offset = pos->offset; | |
0f980a35 | 453 | |
0f980a35 MD |
454 | /* add index to packet array */ |
455 | g_array_append_val(file_stream->pos.packet_index, packet_index); | |
456 | ||
8c572eba | 457 | pos->mmap_offset += packet_index.packet_size / CHAR_BIT; |
0f980a35 MD |
458 | } |
459 | ||
847bf71a MD |
460 | /* Move pos back to beginning of file */ |
461 | ctf_move_pos_slow(pos, 0, SEEK_SET); /* position for write */ | |
462 | ||
0f980a35 MD |
463 | return 0; |
464 | } | |
465 | ||
466 | /* | |
467 | * Note: many file streams can inherit from the same stream class | |
468 | * description (metadata). | |
469 | */ | |
470 | static | |
46322b33 | 471 | int ctf_open_file_stream_read(struct ctf_trace *td, const char *path, int flags) |
0f980a35 MD |
472 | { |
473 | int ret; | |
474 | struct ctf_file_stream *file_stream; | |
475 | ||
46322b33 | 476 | ret = openat(td->dirfd, path, flags); |
0f980a35 MD |
477 | if (ret < 0) |
478 | goto error; | |
479 | file_stream = g_new0(struct ctf_file_stream, 1); | |
8563e754 | 480 | ctf_init_pos(&file_stream->pos, ret, flags); |
0f980a35 MD |
481 | ret = create_stream_packet_index(td, file_stream); |
482 | if (ret) | |
483 | goto error_index; | |
484 | /* Add stream file to stream class */ | |
485 | g_ptr_array_add(file_stream->stream->files, file_stream); | |
486 | return 0; | |
487 | ||
488 | error_index: | |
46322b33 | 489 | ctf_fini_pos(&file_stream->pos); |
0f980a35 MD |
490 | close(file_stream->pos.fd); |
491 | g_free(file_stream); | |
492 | error: | |
65102a8c MD |
493 | return ret; |
494 | } | |
495 | ||
bbefb8dd | 496 | static |
46322b33 | 497 | int ctf_open_trace_read(struct ctf_trace *td, const char *path, int flags) |
bbefb8dd MD |
498 | { |
499 | int ret; | |
65102a8c MD |
500 | struct dirent *dirent; |
501 | struct dirent *diriter; | |
502 | size_t dirent_len; | |
bbefb8dd | 503 | |
46322b33 | 504 | td->flags = flags; |
bbefb8dd MD |
505 | |
506 | /* Open trace directory */ | |
46322b33 MD |
507 | td->dir = opendir(path); |
508 | if (!td->dir) { | |
dc48ecad | 509 | fprintf(stdout, "[error] Unable to open trace directory.\n"); |
bbefb8dd MD |
510 | ret = -ENOENT; |
511 | goto error; | |
512 | } | |
513 | ||
46322b33 MD |
514 | td->dirfd = open(path, 0); |
515 | if (td->dirfd < 0) { | |
dc48ecad | 516 | fprintf(stdout, "[error] Unable to open trace directory file descriptor.\n"); |
65102a8c MD |
517 | ret = -ENOENT; |
518 | goto error_dirfd; | |
519 | } | |
0f980a35 | 520 | |
46322b33 | 521 | td->streams = g_ptr_array_new(); |
0f980a35 | 522 | |
65102a8c MD |
523 | /* |
524 | * Keep the metadata file separate. | |
525 | */ | |
bbefb8dd | 526 | |
65102a8c MD |
527 | ret = ctf_open_trace_metadata_read(td); |
528 | if (ret) { | |
529 | goto error_metadata; | |
530 | } | |
bbefb8dd MD |
531 | |
532 | /* | |
533 | * Open each stream: for each file, try to open, check magic | |
534 | * number, and get the stream ID to add to the right location in | |
535 | * the stream array. | |
bbefb8dd MD |
536 | */ |
537 | ||
65102a8c | 538 | dirent_len = offsetof(struct dirent, d_name) + |
46322b33 | 539 | fpathconf(td->dirfd, _PC_NAME_MAX) + 1; |
bbefb8dd | 540 | |
65102a8c | 541 | dirent = malloc(dirent_len); |
bbefb8dd | 542 | |
65102a8c | 543 | for (;;) { |
46322b33 | 544 | ret = readdir_r(td->dir, dirent, &diriter); |
65102a8c | 545 | if (ret) { |
dc48ecad | 546 | fprintf(stdout, "[error] Readdir error.\n"); |
65102a8c | 547 | goto readdir_error; |
65102a8c MD |
548 | } |
549 | if (!diriter) | |
550 | break; | |
551 | if (!strcmp(diriter->d_name, ".") | |
552 | || !strcmp(diriter->d_name, "..") | |
553 | || !strcmp(diriter->d_name, "metadata")) | |
554 | continue; | |
dc48ecad MD |
555 | ret = ctf_open_file_stream_read(td, diriter->d_name, flags); |
556 | if (ret) { | |
557 | fprintf(stdout, "[error] Open file stream error.\n"); | |
558 | goto readdir_error; | |
559 | } | |
65102a8c | 560 | } |
bbefb8dd | 561 | |
65102a8c | 562 | free(dirent); |
bbefb8dd | 563 | return 0; |
65102a8c MD |
564 | |
565 | readdir_error: | |
566 | free(dirent); | |
567 | error_metadata: | |
46322b33 MD |
568 | g_ptr_array_free(td->streams, TRUE); |
569 | close(td->dirfd); | |
65102a8c | 570 | error_dirfd: |
46322b33 | 571 | closedir(td->dir); |
bbefb8dd MD |
572 | error: |
573 | return ret; | |
574 | } | |
575 | ||
576 | static | |
46322b33 | 577 | int ctf_open_trace_write(struct ctf_trace *td, const char *path, int flags) |
bbefb8dd MD |
578 | { |
579 | int ret; | |
580 | ||
581 | ret = mkdir(path, S_IRWXU|S_IRWXG); | |
582 | if (ret) | |
583 | return ret; | |
584 | ||
65102a8c | 585 | /* Open trace directory */ |
46322b33 MD |
586 | td->dir = opendir(path); |
587 | if (!td->dir) { | |
588 | fprintf(stdout, "[error] Unable to open trace directory.\n"); | |
65102a8c MD |
589 | ret = -ENOENT; |
590 | goto error; | |
591 | } | |
592 | ||
593 | ||
bbefb8dd | 594 | return 0; |
65102a8c MD |
595 | |
596 | error: | |
597 | return ret; | |
bbefb8dd MD |
598 | } |
599 | ||
600 | struct trace_descriptor *ctf_open_trace(const char *path, int flags) | |
601 | { | |
46322b33 | 602 | struct ctf_trace *td; |
bbefb8dd MD |
603 | int ret; |
604 | ||
46322b33 | 605 | td = g_new0(struct ctf_trace, 1); |
bbefb8dd | 606 | |
8c572eba | 607 | switch (flags & O_ACCMODE) { |
bbefb8dd MD |
608 | case O_RDONLY: |
609 | ret = ctf_open_trace_read(td, path, flags); | |
610 | if (ret) | |
611 | goto error; | |
612 | break; | |
613 | case O_WRONLY: | |
46322b33 MD |
614 | fprintf(stdout, "[error] Opening CTF traces for output is not supported yet.\n"); |
615 | goto error; | |
616 | #if 0 | |
bbefb8dd MD |
617 | ret = ctf_open_trace_write(td, path, flags); |
618 | if (ret) | |
619 | goto error; | |
46322b33 | 620 | #endif //0 |
bbefb8dd MD |
621 | break; |
622 | default: | |
46322b33 | 623 | fprintf(stdout, "[error] Incorrect open flags.\n"); |
bbefb8dd MD |
624 | goto error; |
625 | } | |
626 | ||
46322b33 | 627 | return &td->parent; |
bbefb8dd MD |
628 | error: |
629 | g_free(td); | |
630 | return NULL; | |
631 | } | |
632 | ||
0f980a35 MD |
633 | static |
634 | void ctf_close_file_stream(struct ctf_file_stream *file_stream) | |
635 | { | |
46322b33 | 636 | ctf_fini_pos(&file_stream->pos); |
0f980a35 MD |
637 | close(file_stream->pos.fd); |
638 | } | |
639 | ||
46322b33 | 640 | void ctf_close_trace(struct trace_descriptor *tdp) |
bbefb8dd | 641 | { |
46322b33 | 642 | struct ctf_trace *td = container_of(tdp, struct ctf_trace, parent); |
0f980a35 MD |
643 | int i; |
644 | ||
46322b33 MD |
645 | if (td->streams) { |
646 | for (i = 0; i < td->streams->len; i++) { | |
0f980a35 MD |
647 | struct ctf_stream *stream; |
648 | int j; | |
46322b33 | 649 | stream = g_ptr_array_index(td->streams, i); |
0f980a35 MD |
650 | for (j = 0; j < stream->files->len; j++) { |
651 | struct ctf_file_stream *file_stream; | |
2c117823 | 652 | file_stream = g_ptr_array_index(stream->files, j); |
0f980a35 MD |
653 | ctf_close_file_stream(file_stream); |
654 | } | |
655 | ||
656 | } | |
46322b33 | 657 | g_ptr_array_free(td->streams, TRUE); |
0f980a35 | 658 | } |
46322b33 | 659 | closedir(td->dir); |
bbefb8dd MD |
660 | g_free(td); |
661 | } | |
662 | ||
7fb21036 | 663 | void __attribute__((constructor)) ctf_init(void) |
fc93b2bd MD |
664 | { |
665 | int ret; | |
666 | ||
4c8bfb7e | 667 | ctf_format.name = g_quark_from_static_string("ctf"); |
fc93b2bd MD |
668 | ret = bt_register_format(&ctf_format); |
669 | assert(!ret); | |
670 | } | |
698f0fe4 MD |
671 | |
672 | /* TODO: finalize */ |