| 1 | /* |
| 2 | * Copyright (C) 2011-2012 Mathieu Bain <mathieu.bain@polymtl.ca> |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License Version 2 as |
| 6 | * published by the Free Software Foundation; |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License along |
| 14 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 16 | */ |
| 17 | |
| 18 | #include <stdlib.h> |
| 19 | #include <unistd.h> |
| 20 | #include <sys/types.h> |
| 21 | #include <sys/stat.h> |
| 22 | #include <string.h> |
| 23 | #include <babeltrace/babeltrace.h> |
| 24 | |
| 25 | #include "lttngtoptypes.h" |
| 26 | #include "common.h" |
| 27 | #include "iostreamtop.h" |
| 28 | |
| 29 | void add_file(struct processtop *proc, struct files *file, int fd) |
| 30 | { |
| 31 | struct files *tmp_file; |
| 32 | struct processtop *parent; |
| 33 | int size; |
| 34 | int i; |
| 35 | |
| 36 | size = proc->process_files_table->len; |
| 37 | parent = proc->threadparent; |
| 38 | if (parent) |
| 39 | insert_file(parent, fd); |
| 40 | if (size <= fd) { |
| 41 | /* Add NULL file structures for undefined FDs */ |
| 42 | for (i = size; i < fd; i++) { |
| 43 | g_ptr_array_add(proc->process_files_table, NULL); |
| 44 | } |
| 45 | g_ptr_array_add(proc->process_files_table, file); |
| 46 | } else { |
| 47 | tmp_file = g_ptr_array_index(proc->process_files_table, fd); |
| 48 | if (tmp_file == NULL) |
| 49 | g_ptr_array_index(proc->process_files_table, fd) = file; |
| 50 | else { |
| 51 | if (!tmp_file->name || |
| 52 | strcmp(tmp_file->name, file->name) != 0) { |
| 53 | size = proc->process_files_table->len; |
| 54 | g_ptr_array_set_size(proc->process_files_table, |
| 55 | size+1); |
| 56 | g_ptr_array_index(proc->process_files_table, |
| 57 | size) = tmp_file; |
| 58 | g_ptr_array_index(proc->process_files_table, |
| 59 | fd) = file; |
| 60 | } else |
| 61 | tmp_file->flag = __NR_open; |
| 62 | } |
| 63 | } |
| 64 | /* |
| 65 | * The file may have be created in the parent |
| 66 | */ |
| 67 | if (file->flag == -1) { |
| 68 | file->fd = fd; |
| 69 | file->flag = __NR_open; |
| 70 | lttngtop.nbfiles++; |
| 71 | lttngtop.nbnewfiles++; |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | /* |
| 76 | * Edit the file |
| 77 | * Called by handled_statedump_filename |
| 78 | */ |
| 79 | void edit_file(struct processtop *proc, struct files *file, int fd) |
| 80 | { |
| 81 | int size = proc->process_files_table->len; |
| 82 | struct files *tmpfile; |
| 83 | |
| 84 | if (fd >= size) { |
| 85 | add_file(proc, file, fd); |
| 86 | } else { |
| 87 | tmpfile = g_ptr_array_index(proc->process_files_table, fd); |
| 88 | if (tmpfile) { |
| 89 | tmpfile->name = strdup(file->name); |
| 90 | free(file); |
| 91 | } else |
| 92 | add_file(proc, file, fd); |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | void insert_file(struct processtop *proc, int fd) |
| 97 | { |
| 98 | struct files *tmp; |
| 99 | struct files *tmp_parent; |
| 100 | struct processtop *parent; |
| 101 | |
| 102 | if (fd < 0) |
| 103 | return; |
| 104 | if (fd >= proc->process_files_table->len) { |
| 105 | tmp = g_new0(struct files, 1); |
| 106 | tmp->name = NULL; |
| 107 | tmp->read = 0; |
| 108 | tmp->write = 0; |
| 109 | tmp->fd = fd; |
| 110 | tmp->flag = -1; |
| 111 | add_file(proc, tmp, fd); |
| 112 | } else { |
| 113 | tmp = g_ptr_array_index(proc->process_files_table, fd); |
| 114 | if (tmp == NULL) { |
| 115 | tmp = g_new0(struct files, 1); |
| 116 | tmp->name = NULL; |
| 117 | tmp->read = 0; |
| 118 | tmp->write = 0; |
| 119 | tmp->fd = fd; |
| 120 | tmp->flag = -1; |
| 121 | add_file(proc, tmp, fd); |
| 122 | } else { |
| 123 | parent = proc->threadparent; |
| 124 | if (parent) { |
| 125 | tmp_parent = g_ptr_array_index( |
| 126 | parent->process_files_table, fd); |
| 127 | if (tmp_parent && tmp->name && tmp_parent->name && |
| 128 | (strcmp(tmp->name, tmp_parent->name)) != 0) |
| 129 | tmp->name = strdup(tmp_parent->name); |
| 130 | } |
| 131 | } |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | void close_file(struct processtop *proc, int fd) |
| 136 | { |
| 137 | struct files *file; |
| 138 | |
| 139 | file = get_file(proc, fd); |
| 140 | if (file != NULL) { |
| 141 | file->flag = __NR_close; |
| 142 | lttngtop.nbfiles--; |
| 143 | if (file->name) { |
| 144 | free(file->name); |
| 145 | file->name = NULL; |
| 146 | } |
| 147 | } |
| 148 | lttngtop.nbclosedfiles++; |
| 149 | } |
| 150 | |
| 151 | struct files *get_file(struct processtop *proc, int fd) |
| 152 | { |
| 153 | int len; |
| 154 | struct files *tmp = NULL; |
| 155 | |
| 156 | len = proc->process_files_table->len; |
| 157 | |
| 158 | /* |
| 159 | * It is possible that a file was open before taking the trace |
| 160 | * and its fd could be greater than all of the others fd |
| 161 | * used by the process |
| 162 | */ |
| 163 | if (fd < len && fd >= 0) |
| 164 | tmp = g_ptr_array_index(proc->process_files_table, fd); |
| 165 | |
| 166 | return tmp; |
| 167 | } |
| 168 | |
| 169 | void show_table(GPtrArray *tab) |
| 170 | { |
| 171 | int i; |
| 172 | struct files *file; |
| 173 | |
| 174 | for (i = 0 ; i < tab->len; i++) { |
| 175 | file = g_ptr_array_index(tab, i); |
| 176 | if (file == NULL) |
| 177 | fprintf(stderr, "NULL, "); |
| 178 | else |
| 179 | fprintf(stderr, "%s, ", file->name); |
| 180 | } |
| 181 | fprintf(stderr, "]\n\n"); |
| 182 | } |
| 183 | |
| 184 | void show_history(struct file_history *history) |
| 185 | { |
| 186 | struct file_history *tmp = history; |
| 187 | |
| 188 | while (tmp != NULL) { |
| 189 | fprintf(stderr, "fd = %d, name = %s\n", tmp->file->fd, |
| 190 | tmp->file->name); |
| 191 | tmp = tmp->next; |
| 192 | } |
| 193 | |
| 194 | } |
| 195 | |
| 196 | int update_iostream_ret(struct lttngtop *ctx, int tid, char *comm, |
| 197 | unsigned long timestamp, uint64_t cpu_id, int ret, |
| 198 | char *hostname) |
| 199 | { |
| 200 | struct processtop *tmp; |
| 201 | struct files *tmpfile; |
| 202 | int err = 0; |
| 203 | |
| 204 | tmp = get_proc(ctx, tid, comm, timestamp, hostname); |
| 205 | |
| 206 | if (!tmp) { |
| 207 | err = -1; |
| 208 | goto end; |
| 209 | } |
| 210 | if (tmp->syscall_info != NULL) { |
| 211 | if (tmp->syscall_info->type == __NR_read |
| 212 | && ret > 0) { |
| 213 | tmp->totalfileread += ret; |
| 214 | tmp->fileread += ret; |
| 215 | tmpfile = get_file(tmp, tmp->syscall_info->fd); |
| 216 | if (tmpfile) |
| 217 | tmpfile->read += ret; |
| 218 | } else if (tmp->syscall_info->type == __NR_write |
| 219 | && ret > 0) { |
| 220 | tmp->totalfilewrite += ret; |
| 221 | tmp->filewrite += ret; |
| 222 | tmpfile = get_file(tmp, tmp->syscall_info->fd); |
| 223 | if (tmpfile) |
| 224 | tmpfile->write += ret; |
| 225 | } else if (tmp->syscall_info->type == __NR_open |
| 226 | && ret > 0) { |
| 227 | tmpfile = tmp->files_history->file; |
| 228 | add_file(tmp, tmpfile, ret); |
| 229 | tmpfile->fd = ret; |
| 230 | } else { |
| 231 | err = -1; |
| 232 | } |
| 233 | g_free(tmp->syscall_info); |
| 234 | tmp->syscall_info = NULL; |
| 235 | } |
| 236 | |
| 237 | end: |
| 238 | return err; |
| 239 | } |
| 240 | |
| 241 | struct syscalls *create_syscall_info(unsigned int type, uint64_t cpu_id, |
| 242 | unsigned int tid, int fd) |
| 243 | { |
| 244 | struct syscalls *syscall_info; |
| 245 | |
| 246 | syscall_info = g_new0(struct syscalls, 1); |
| 247 | syscall_info->type = type; |
| 248 | syscall_info->cpu_id = cpu_id; |
| 249 | syscall_info->tid = tid; |
| 250 | syscall_info->fd = fd; |
| 251 | |
| 252 | return syscall_info; |
| 253 | } |
| 254 | |
| 255 | struct file_history *create_file(struct file_history *history, char *file_name) |
| 256 | { |
| 257 | struct files *new_file; |
| 258 | struct file_history *new_history; |
| 259 | |
| 260 | new_file = g_new0(struct files, 1); |
| 261 | new_history = g_new0(struct file_history, 1); |
| 262 | new_file->name = strdup(file_name); |
| 263 | new_file->read = 0; |
| 264 | new_file->write = 0; |
| 265 | new_file->flag = -1; |
| 266 | new_history->file = new_file; |
| 267 | new_history->next = history; |
| 268 | |
| 269 | return new_history; |
| 270 | } |
| 271 | |
| 272 | enum bt_cb_ret handle_exit_syscall(struct bt_ctf_event *call_data, |
| 273 | void *private_data) |
| 274 | { |
| 275 | const struct bt_definition *scope; |
| 276 | unsigned long timestamp; |
| 277 | char *comm; |
| 278 | uint64_t ret, tid; |
| 279 | uint64_t cpu_id; |
| 280 | char *hostname; |
| 281 | |
| 282 | timestamp = bt_ctf_get_timestamp(call_data); |
| 283 | if (timestamp == -1ULL) |
| 284 | goto error; |
| 285 | |
| 286 | comm = get_context_comm(call_data); |
| 287 | tid = get_context_tid(call_data); |
| 288 | |
| 289 | scope = bt_ctf_get_top_level_scope(call_data, |
| 290 | BT_EVENT_FIELDS); |
| 291 | ret = bt_ctf_get_int64(bt_ctf_get_field(call_data, |
| 292 | scope, "_ret")); |
| 293 | if (bt_ctf_field_get_error()) { |
| 294 | fprintf(stderr, "Missing ret context info\n"); |
| 295 | goto error; |
| 296 | } |
| 297 | |
| 298 | cpu_id = get_cpu_id(call_data); |
| 299 | hostname = get_context_hostname(call_data); |
| 300 | |
| 301 | /* |
| 302 | * if we encounter an exit_syscall and |
| 303 | * it is not for a syscall read or write |
| 304 | * we just abort the execution of this callback |
| 305 | */ |
| 306 | if ((update_iostream_ret(<tngtop, tid, comm, timestamp, cpu_id, |
| 307 | ret, hostname)) < 0) |
| 308 | return BT_CB_ERROR_CONTINUE; |
| 309 | |
| 310 | return BT_CB_OK; |
| 311 | |
| 312 | error: |
| 313 | return BT_CB_ERROR_STOP; |
| 314 | } |
| 315 | |
| 316 | |
| 317 | enum bt_cb_ret handle_sys_write(struct bt_ctf_event *call_data, |
| 318 | void *private_data) |
| 319 | { |
| 320 | const struct bt_definition *scope; |
| 321 | struct processtop *tmp; |
| 322 | unsigned long timestamp; |
| 323 | uint64_t cpu_id; |
| 324 | int64_t tid; |
| 325 | char *procname, *hostname; |
| 326 | int fd; |
| 327 | |
| 328 | timestamp = bt_ctf_get_timestamp(call_data); |
| 329 | if (timestamp == -1ULL) |
| 330 | goto error; |
| 331 | |
| 332 | tid = get_context_tid(call_data); |
| 333 | cpu_id = get_cpu_id(call_data); |
| 334 | |
| 335 | procname = get_context_comm(call_data); |
| 336 | hostname = get_context_hostname(call_data); |
| 337 | |
| 338 | scope = bt_ctf_get_top_level_scope(call_data, |
| 339 | BT_EVENT_FIELDS); |
| 340 | fd = bt_ctf_get_uint64(bt_ctf_get_field(call_data, |
| 341 | scope, "_fd")); |
| 342 | if (bt_ctf_field_get_error()) { |
| 343 | fprintf(stderr, "Missing fd context info\n"); |
| 344 | goto error; |
| 345 | } |
| 346 | |
| 347 | tmp = get_proc(<tngtop, tid, procname, timestamp, hostname); |
| 348 | if (!tmp) |
| 349 | goto end; |
| 350 | |
| 351 | tmp->syscall_info = create_syscall_info(__NR_write, cpu_id, tid, fd); |
| 352 | |
| 353 | insert_file(tmp, fd); |
| 354 | |
| 355 | end: |
| 356 | return BT_CB_OK; |
| 357 | |
| 358 | error: |
| 359 | return BT_CB_ERROR_STOP; |
| 360 | } |
| 361 | |
| 362 | enum bt_cb_ret handle_sys_read(struct bt_ctf_event *call_data, |
| 363 | void *private_data) |
| 364 | { |
| 365 | struct processtop *tmp; |
| 366 | const struct bt_definition *scope; |
| 367 | unsigned long timestamp; |
| 368 | uint64_t cpu_id; |
| 369 | int64_t tid; |
| 370 | char *procname; |
| 371 | int fd; |
| 372 | char *hostname; |
| 373 | |
| 374 | timestamp = bt_ctf_get_timestamp(call_data); |
| 375 | if (timestamp == -1ULL) |
| 376 | goto error; |
| 377 | |
| 378 | tid = get_context_tid(call_data); |
| 379 | cpu_id = get_cpu_id(call_data); |
| 380 | |
| 381 | procname = get_context_comm(call_data); |
| 382 | hostname = get_context_hostname(call_data); |
| 383 | |
| 384 | scope = bt_ctf_get_top_level_scope(call_data, |
| 385 | BT_EVENT_FIELDS); |
| 386 | fd = bt_ctf_get_uint64(bt_ctf_get_field(call_data, |
| 387 | scope, "_fd")); |
| 388 | if (bt_ctf_field_get_error()) { |
| 389 | fprintf(stderr, "Missing fd context info\n"); |
| 390 | goto error; |
| 391 | } |
| 392 | |
| 393 | tmp = get_proc(<tngtop, tid, procname, timestamp, hostname); |
| 394 | if (!tmp) |
| 395 | goto end; |
| 396 | |
| 397 | tmp->syscall_info = create_syscall_info(__NR_read, cpu_id, tid, fd); |
| 398 | |
| 399 | insert_file(tmp, fd); |
| 400 | |
| 401 | end: |
| 402 | return BT_CB_OK; |
| 403 | |
| 404 | error: |
| 405 | return BT_CB_ERROR_STOP; |
| 406 | } |
| 407 | |
| 408 | enum bt_cb_ret handle_sys_open(struct bt_ctf_event *call_data, |
| 409 | void *private_data) |
| 410 | { |
| 411 | |
| 412 | struct processtop *tmp; |
| 413 | const struct bt_definition *scope; |
| 414 | unsigned long timestamp; |
| 415 | uint64_t cpu_id; |
| 416 | int64_t tid; |
| 417 | char *procname, *hostname; |
| 418 | char *file; |
| 419 | |
| 420 | timestamp = bt_ctf_get_timestamp(call_data); |
| 421 | if (timestamp == -1ULL) |
| 422 | goto error; |
| 423 | |
| 424 | tid = get_context_tid(call_data); |
| 425 | cpu_id = get_cpu_id(call_data); |
| 426 | |
| 427 | procname = get_context_comm(call_data); |
| 428 | hostname = get_context_hostname(call_data); |
| 429 | |
| 430 | scope = bt_ctf_get_top_level_scope(call_data, |
| 431 | BT_EVENT_FIELDS); |
| 432 | file = bt_ctf_get_string(bt_ctf_get_field(call_data, |
| 433 | scope, "_filename")); |
| 434 | if (bt_ctf_field_get_error()) { |
| 435 | fprintf(stderr, "Missing file name context info\n"); |
| 436 | goto error; |
| 437 | } |
| 438 | |
| 439 | tmp = get_proc(<tngtop, tid, procname, timestamp, hostname); |
| 440 | if (!tmp) |
| 441 | goto end; |
| 442 | |
| 443 | tmp->syscall_info = create_syscall_info(__NR_open, cpu_id, tid, -1); |
| 444 | |
| 445 | tmp->files_history = create_file(tmp->files_history, file); |
| 446 | |
| 447 | end: |
| 448 | return BT_CB_OK; |
| 449 | |
| 450 | error: |
| 451 | return BT_CB_ERROR_STOP; |
| 452 | } |
| 453 | |
| 454 | enum bt_cb_ret handle_sys_socket(struct bt_ctf_event *call_data, |
| 455 | void *private_data) |
| 456 | { |
| 457 | |
| 458 | struct processtop *tmp; |
| 459 | unsigned long timestamp; |
| 460 | uint64_t cpu_id; |
| 461 | int64_t tid; |
| 462 | char *procname, *hostname; |
| 463 | char *file; |
| 464 | |
| 465 | timestamp = bt_ctf_get_timestamp(call_data); |
| 466 | if (timestamp == -1ULL) |
| 467 | goto error; |
| 468 | |
| 469 | tid = get_context_tid(call_data); |
| 470 | cpu_id = get_cpu_id(call_data); |
| 471 | |
| 472 | procname = get_context_comm(call_data); |
| 473 | hostname = get_context_hostname(call_data); |
| 474 | |
| 475 | file = strdup("socket"); |
| 476 | |
| 477 | tmp = get_proc(<tngtop, tid, procname, timestamp, hostname); |
| 478 | if (!tmp) |
| 479 | goto end; |
| 480 | |
| 481 | tmp->syscall_info = create_syscall_info(__NR_open, cpu_id, tid, -1); |
| 482 | |
| 483 | tmp->files_history = create_file(tmp->files_history, file); |
| 484 | |
| 485 | end: |
| 486 | return BT_CB_OK; |
| 487 | |
| 488 | error: |
| 489 | return BT_CB_ERROR_STOP; |
| 490 | } |
| 491 | |
| 492 | enum bt_cb_ret handle_sys_close(struct bt_ctf_event *call_data, |
| 493 | void *private_data) |
| 494 | { |
| 495 | const struct bt_definition *scope; |
| 496 | struct processtop *tmp; |
| 497 | unsigned long timestamp; |
| 498 | int64_t tid; |
| 499 | char *procname; |
| 500 | int fd; |
| 501 | char *hostname; |
| 502 | |
| 503 | timestamp = bt_ctf_get_timestamp(call_data); |
| 504 | if (timestamp == -1ULL) |
| 505 | goto error; |
| 506 | |
| 507 | tid = get_context_tid(call_data); |
| 508 | |
| 509 | procname = get_context_comm(call_data); |
| 510 | hostname = get_context_hostname(call_data); |
| 511 | |
| 512 | scope = bt_ctf_get_top_level_scope(call_data, |
| 513 | BT_EVENT_FIELDS); |
| 514 | fd = bt_ctf_get_uint64(bt_ctf_get_field(call_data, |
| 515 | scope, "_fd")); |
| 516 | if (bt_ctf_field_get_error()) { |
| 517 | fprintf(stderr, "Missing fd context info\n"); |
| 518 | goto error; |
| 519 | } |
| 520 | |
| 521 | tmp = get_proc(<tngtop, tid, procname, timestamp, hostname); |
| 522 | if (!tmp) |
| 523 | goto end; |
| 524 | |
| 525 | close_file(tmp, fd); |
| 526 | |
| 527 | end: |
| 528 | return BT_CB_OK; |
| 529 | |
| 530 | error: |
| 531 | return BT_CB_ERROR_STOP; |
| 532 | } |
| 533 | |
| 534 | enum bt_cb_ret handle_statedump_file_descriptor(struct bt_ctf_event *call_data, |
| 535 | void *private_data) |
| 536 | { |
| 537 | const struct bt_definition *scope; |
| 538 | struct processtop *parent; |
| 539 | struct files *file; |
| 540 | unsigned long timestamp; |
| 541 | int64_t pid; |
| 542 | char *file_name, *hostname; |
| 543 | int fd; |
| 544 | |
| 545 | timestamp = bt_ctf_get_timestamp(call_data); |
| 546 | if (timestamp == -1ULL) |
| 547 | goto error; |
| 548 | |
| 549 | scope = bt_ctf_get_top_level_scope(call_data, |
| 550 | BT_EVENT_FIELDS); |
| 551 | pid = bt_ctf_get_int64(bt_ctf_get_field(call_data, |
| 552 | scope, "_pid")); |
| 553 | if (bt_ctf_field_get_error()) { |
| 554 | fprintf(stderr, "Missing tid context info\n"); |
| 555 | goto error; |
| 556 | } |
| 557 | |
| 558 | scope = bt_ctf_get_top_level_scope(call_data, |
| 559 | BT_EVENT_FIELDS); |
| 560 | fd = bt_ctf_get_int64(bt_ctf_get_field(call_data, |
| 561 | scope, "_fd")); |
| 562 | if (bt_ctf_field_get_error()) { |
| 563 | fprintf(stderr, "Missing fd context info\n"); |
| 564 | goto error; |
| 565 | } |
| 566 | |
| 567 | scope = bt_ctf_get_top_level_scope(call_data, |
| 568 | BT_EVENT_FIELDS); |
| 569 | file_name = bt_ctf_get_string(bt_ctf_get_field(call_data, |
| 570 | scope, "_filename")); |
| 571 | if (bt_ctf_field_get_error()) { |
| 572 | fprintf(stderr, "Missing file name context info\n"); |
| 573 | goto error; |
| 574 | } |
| 575 | hostname = get_context_hostname(call_data); |
| 576 | |
| 577 | parent = get_proc_pid(<tngtop, pid, pid, timestamp, hostname); |
| 578 | if (!parent) |
| 579 | goto end; |
| 580 | |
| 581 | parent->files_history = create_file(parent->files_history, file_name); |
| 582 | file = parent->files_history->file; |
| 583 | edit_file(parent, file, fd); |
| 584 | |
| 585 | end: |
| 586 | return BT_CB_OK; |
| 587 | |
| 588 | error: |
| 589 | return BT_CB_ERROR_STOP; |
| 590 | } |