| 1 | /* |
| 2 | * Copyright (C) 2011 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 |
| 14 | * along with this program; if not, write to the Free Software |
| 15 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
| 16 | * MA 02111-1307, USA. |
| 17 | */ |
| 18 | |
| 19 | #include <stdlib.h> |
| 20 | #include <unistd.h> |
| 21 | #include <sys/types.h> |
| 22 | #include <sys/stat.h> |
| 23 | #include <string.h> |
| 24 | #include <babeltrace/babeltrace.h> |
| 25 | |
| 26 | #include "lttngtoptypes.h" |
| 27 | #include "common.h" |
| 28 | #include "iostreamtop.h" |
| 29 | |
| 30 | void add_file(struct processtop *proc, struct files *file, int fd) |
| 31 | { |
| 32 | if (proc->process_files_table->len <= fd) { |
| 33 | g_ptr_array_set_size(proc->process_files_table, fd); |
| 34 | g_ptr_array_add(proc->process_files_table, file); |
| 35 | } else { |
| 36 | g_ptr_array_index(proc->process_files_table, fd) = file; |
| 37 | } |
| 38 | file->fd = fd; |
| 39 | } |
| 40 | |
| 41 | |
| 42 | void insert_file(struct processtop *proc, int fd) |
| 43 | { |
| 44 | struct files *tmp; |
| 45 | |
| 46 | if (fd >= proc->process_files_table->len) { |
| 47 | tmp = g_new0(struct files, 1); |
| 48 | tmp->name = "Unknown"; |
| 49 | add_file(proc, tmp, fd); |
| 50 | } else { |
| 51 | |
| 52 | tmp = g_ptr_array_index(proc->process_files_table, fd); |
| 53 | if (tmp == NULL) { |
| 54 | tmp = g_new0(struct files, 1); |
| 55 | tmp->name = "Unknown"; |
| 56 | tmp->read = 0; |
| 57 | tmp->write = 0; |
| 58 | tmp->fd = fd; |
| 59 | add_file(proc, tmp, fd); |
| 60 | } |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | void close_file(struct processtop *proc, int fd) |
| 65 | { |
| 66 | int len; |
| 67 | |
| 68 | len = proc->process_files_table->len; |
| 69 | |
| 70 | /* |
| 71 | * It is possible that a file was open before taking the trace |
| 72 | * and its fd could be greater than all of the others fd |
| 73 | * used by the process |
| 74 | */ |
| 75 | if (fd < len) { |
| 76 | g_ptr_array_remove_index_fast(proc->process_files_table, fd); |
| 77 | g_ptr_array_set_size(proc->process_files_table, len + 1); |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | struct files *get_file(struct processtop *proc, int fd) |
| 82 | { |
| 83 | struct files *tmp; |
| 84 | tmp = g_ptr_array_index(proc->process_files_table, fd); |
| 85 | return tmp; |
| 86 | } |
| 87 | |
| 88 | void show_table(GPtrArray *tab) |
| 89 | { |
| 90 | int i; |
| 91 | struct files *file; |
| 92 | |
| 93 | for (i = 0 ; i < tab->len; i++) { |
| 94 | file = g_ptr_array_index(tab, i); |
| 95 | if (file == NULL) |
| 96 | fprintf(stderr, "NULL, "); |
| 97 | else |
| 98 | fprintf(stderr, "%s, ", file->name); |
| 99 | } |
| 100 | fprintf(stderr, "]\n\n"); |
| 101 | } |
| 102 | |
| 103 | int update_iostream_ret(struct lttngtop *ctx, int tid, char *comm, |
| 104 | unsigned long timestamp, uint64_t cpu_id, int ret) |
| 105 | { |
| 106 | struct processtop *tmp; |
| 107 | struct files *tmpfile; |
| 108 | int err = 0; |
| 109 | |
| 110 | tmp = get_proc(ctx, tid, comm, timestamp); |
| 111 | |
| 112 | if (tmp->syscall_info != NULL) { |
| 113 | if (tmp->syscall_info->type == __NR_read |
| 114 | && ret > 0) { |
| 115 | tmp->totalfileread += ret; |
| 116 | tmp->fileread += ret; |
| 117 | tmpfile = get_file(tmp, tmp->syscall_info->fd); |
| 118 | tmpfile->read += ret; |
| 119 | } else if (tmp->syscall_info->type == __NR_write |
| 120 | && ret > 0) { |
| 121 | tmp->totalfilewrite += ret; |
| 122 | tmp->filewrite += ret; |
| 123 | tmpfile = get_file(tmp, tmp->syscall_info->fd); |
| 124 | tmpfile->write += ret; |
| 125 | } else if (tmp->syscall_info->type == __NR_open |
| 126 | && ret > 0) { |
| 127 | add_file(tmp, tmp->files_history->file, ret); |
| 128 | } else { |
| 129 | err = -1; |
| 130 | } |
| 131 | g_free(tmp->syscall_info); |
| 132 | tmp->syscall_info = NULL; |
| 133 | } |
| 134 | return err; |
| 135 | } |
| 136 | |
| 137 | struct syscalls *create_syscall_info(unsigned int type, uint64_t cpu_id, |
| 138 | unsigned int tid, int fd) |
| 139 | { |
| 140 | struct syscalls *syscall_info; |
| 141 | |
| 142 | syscall_info = g_new0(struct syscalls, 1); |
| 143 | syscall_info->type = type; |
| 144 | syscall_info->cpu_id = cpu_id; |
| 145 | syscall_info->tid = tid; |
| 146 | syscall_info->fd = fd; |
| 147 | |
| 148 | return syscall_info; |
| 149 | } |
| 150 | |
| 151 | struct file_history *create_file(struct file_history *history, char *file_name) |
| 152 | { |
| 153 | struct files *new_file; |
| 154 | struct file_history *new_history; |
| 155 | |
| 156 | new_file = g_new0(struct files, 1); |
| 157 | new_history = g_new0(struct file_history, 1); |
| 158 | new_file->name = strdup(file_name); |
| 159 | new_file->read = 0; |
| 160 | new_file->write = 0; |
| 161 | new_history->file = new_file; |
| 162 | new_history->next = history; |
| 163 | |
| 164 | return new_history; |
| 165 | } |
| 166 | |
| 167 | enum bt_cb_ret handle_exit_syscall(struct bt_ctf_event *call_data, |
| 168 | void *private_data) |
| 169 | { |
| 170 | struct definition *scope; |
| 171 | unsigned long timestamp; |
| 172 | char *comm; |
| 173 | uint64_t ret, tid; |
| 174 | uint64_t cpu_id; |
| 175 | |
| 176 | timestamp = bt_ctf_get_timestamp(call_data); |
| 177 | if (timestamp == -1ULL) |
| 178 | goto error; |
| 179 | |
| 180 | comm = get_context_comm(call_data); |
| 181 | tid = get_context_tid(call_data); |
| 182 | |
| 183 | scope = bt_ctf_get_top_level_scope(call_data, |
| 184 | BT_EVENT_FIELDS); |
| 185 | ret = bt_ctf_get_int64(bt_ctf_get_field(call_data, |
| 186 | scope, "_ret")); |
| 187 | if (bt_ctf_field_get_error()) { |
| 188 | fprintf(stderr, "Missing ret context info\n"); |
| 189 | goto error; |
| 190 | } |
| 191 | |
| 192 | cpu_id = get_cpu_id(call_data); |
| 193 | |
| 194 | /* |
| 195 | * if we encounter an exit_syscall and |
| 196 | * it is not for a syscall read or write |
| 197 | * we just abort the execution of this callback |
| 198 | */ |
| 199 | if ((update_iostream_ret(<tngtop, tid, comm, timestamp, cpu_id, ret)) < 0) |
| 200 | return BT_CB_ERROR_CONTINUE; |
| 201 | |
| 202 | return BT_CB_OK; |
| 203 | |
| 204 | error: |
| 205 | return BT_CB_ERROR_STOP; |
| 206 | } |
| 207 | |
| 208 | |
| 209 | enum bt_cb_ret handle_sys_write(struct bt_ctf_event *call_data, |
| 210 | void *private_data) |
| 211 | { |
| 212 | struct definition *scope; |
| 213 | struct processtop *tmp; |
| 214 | unsigned long timestamp; |
| 215 | uint64_t cpu_id; |
| 216 | char *comm; |
| 217 | int64_t tid; |
| 218 | int fd; |
| 219 | |
| 220 | timestamp = bt_ctf_get_timestamp(call_data); |
| 221 | if (timestamp == -1ULL) |
| 222 | goto error; |
| 223 | |
| 224 | comm = get_context_comm(call_data); |
| 225 | tid = get_context_tid(call_data); |
| 226 | cpu_id = get_cpu_id(call_data); |
| 227 | |
| 228 | scope = bt_ctf_get_top_level_scope(call_data, |
| 229 | BT_EVENT_FIELDS); |
| 230 | fd = bt_ctf_get_uint64(bt_ctf_get_field(call_data, |
| 231 | scope, "_fd")); |
| 232 | if (bt_ctf_field_get_error()) { |
| 233 | fprintf(stderr, "Missing fd context info\n"); |
| 234 | goto error; |
| 235 | } |
| 236 | |
| 237 | tmp = get_proc(<tngtop, tid, comm, timestamp); |
| 238 | tmp->syscall_info = create_syscall_info(__NR_write, cpu_id, tid, fd); |
| 239 | |
| 240 | insert_file(tmp, fd); |
| 241 | |
| 242 | return BT_CB_OK; |
| 243 | |
| 244 | error: |
| 245 | return BT_CB_ERROR_STOP; |
| 246 | } |
| 247 | |
| 248 | enum bt_cb_ret handle_sys_read(struct bt_ctf_event *call_data, |
| 249 | void *private_data) |
| 250 | { |
| 251 | struct processtop *tmp; |
| 252 | struct definition *scope; |
| 253 | unsigned long timestamp; |
| 254 | uint64_t cpu_id; |
| 255 | char *comm; |
| 256 | int64_t tid; |
| 257 | int fd; |
| 258 | |
| 259 | timestamp = bt_ctf_get_timestamp(call_data); |
| 260 | if (timestamp == -1ULL) |
| 261 | goto error; |
| 262 | |
| 263 | comm = get_context_comm(call_data); |
| 264 | tid = get_context_tid(call_data); |
| 265 | cpu_id = get_cpu_id(call_data); |
| 266 | |
| 267 | scope = bt_ctf_get_top_level_scope(call_data, |
| 268 | BT_EVENT_FIELDS); |
| 269 | fd = bt_ctf_get_uint64(bt_ctf_get_field(call_data, |
| 270 | scope, "_fd")); |
| 271 | if (bt_ctf_field_get_error()) { |
| 272 | fprintf(stderr, "Missing fd context info\n"); |
| 273 | goto error; |
| 274 | } |
| 275 | |
| 276 | tmp = get_proc(<tngtop, tid, comm, timestamp); |
| 277 | tmp->syscall_info = create_syscall_info(__NR_read, cpu_id, tid, fd); |
| 278 | |
| 279 | insert_file(tmp, fd); |
| 280 | |
| 281 | return BT_CB_OK; |
| 282 | |
| 283 | error: |
| 284 | return BT_CB_ERROR_STOP; |
| 285 | } |
| 286 | |
| 287 | |
| 288 | enum bt_cb_ret handle_sys_open(struct bt_ctf_event *call_data, |
| 289 | void *private_data) |
| 290 | { |
| 291 | |
| 292 | struct processtop *tmp; |
| 293 | struct definition *scope; |
| 294 | unsigned long timestamp; |
| 295 | uint64_t cpu_id; |
| 296 | char *comm; |
| 297 | int64_t tid; |
| 298 | char *file; |
| 299 | |
| 300 | timestamp = bt_ctf_get_timestamp(call_data); |
| 301 | if (timestamp == -1ULL) |
| 302 | goto error; |
| 303 | |
| 304 | comm = get_context_comm(call_data); |
| 305 | tid = get_context_tid(call_data); |
| 306 | cpu_id = get_cpu_id(call_data); |
| 307 | |
| 308 | scope = bt_ctf_get_top_level_scope(call_data, |
| 309 | BT_EVENT_FIELDS); |
| 310 | file = bt_ctf_get_string(bt_ctf_get_field(call_data, |
| 311 | scope, "_filename")); |
| 312 | if (bt_ctf_field_get_error()) { |
| 313 | fprintf(stderr, "Missing fd context info\n"); |
| 314 | goto error; |
| 315 | } |
| 316 | |
| 317 | tmp = get_proc(<tngtop, tid, comm, timestamp); |
| 318 | tmp->syscall_info = create_syscall_info(__NR_open, cpu_id, tid, -1); |
| 319 | |
| 320 | tmp->files_history = create_file(tmp->files_history, file); |
| 321 | |
| 322 | return BT_CB_OK; |
| 323 | |
| 324 | error: |
| 325 | return BT_CB_ERROR_STOP; |
| 326 | } |
| 327 | |
| 328 | |
| 329 | enum bt_cb_ret handle_sys_close(struct bt_ctf_event *call_data, |
| 330 | void *private_data) |
| 331 | { |
| 332 | struct definition *scope; |
| 333 | unsigned long timestamp; |
| 334 | int64_t tid; |
| 335 | struct processtop *tmp; |
| 336 | char *comm; |
| 337 | int fd; |
| 338 | |
| 339 | timestamp = bt_ctf_get_timestamp(call_data); |
| 340 | if (timestamp == -1ULL) |
| 341 | goto error; |
| 342 | |
| 343 | comm = get_context_comm(call_data); |
| 344 | tid = get_context_tid(call_data); |
| 345 | |
| 346 | scope = bt_ctf_get_top_level_scope(call_data, |
| 347 | BT_EVENT_FIELDS); |
| 348 | fd = bt_ctf_get_uint64(bt_ctf_get_field(call_data, |
| 349 | scope, "_fd")); |
| 350 | if (bt_ctf_field_get_error()) { |
| 351 | fprintf(stderr, "Missing fd context info\n"); |
| 352 | goto error; |
| 353 | } |
| 354 | |
| 355 | tmp = get_proc(<tngtop, tid, comm, timestamp); |
| 356 | close_file(tmp, fd); |
| 357 | |
| 358 | return BT_CB_OK; |
| 359 | |
| 360 | error: |
| 361 | return BT_CB_ERROR_STOP; |
| 362 | } |