| 1 | /* |
| 2 | * Copyright (C) 2011 - David Goulet <david.goulet@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 only, |
| 6 | * as 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 | #ifndef _LTT_UST_APP_H |
| 19 | #define _LTT_UST_APP_H |
| 20 | |
| 21 | #include <stdint.h> |
| 22 | |
| 23 | #include "trace-ust.h" |
| 24 | |
| 25 | /* lttng-ust supported version. */ |
| 26 | #define LTTNG_UST_COMM_MAJOR 2 /* comm protocol major version */ |
| 27 | #define UST_APP_MAJOR_VERSION 2 /* UST version supported */ |
| 28 | |
| 29 | #define UST_APP_EVENT_LIST_SIZE 32 |
| 30 | |
| 31 | extern int ust_consumerd64_fd, ust_consumerd32_fd; |
| 32 | |
| 33 | /* |
| 34 | * Application registration data structure. |
| 35 | */ |
| 36 | struct ust_register_msg { |
| 37 | uint32_t major; |
| 38 | uint32_t minor; |
| 39 | pid_t pid; |
| 40 | pid_t ppid; |
| 41 | uid_t uid; |
| 42 | gid_t gid; |
| 43 | uint32_t bits_per_long; |
| 44 | char name[16]; |
| 45 | }; |
| 46 | |
| 47 | /* |
| 48 | * Global applications HT used by the session daemon. This table is indexed by |
| 49 | * PID using the pid_n node and pid value of an ust_app. |
| 50 | */ |
| 51 | struct lttng_ht *ust_app_ht; |
| 52 | |
| 53 | /* |
| 54 | * Global applications HT used by the session daemon. This table is indexed by |
| 55 | * socket using the sock_n node and sock value of an ust_app. |
| 56 | */ |
| 57 | struct lttng_ht *ust_app_ht_by_sock; |
| 58 | |
| 59 | struct ust_app_ctx { |
| 60 | int handle; |
| 61 | struct lttng_ust_context ctx; |
| 62 | struct lttng_ust_object_data *obj; |
| 63 | struct lttng_ht_node_ulong node; |
| 64 | }; |
| 65 | |
| 66 | struct ust_app_event { |
| 67 | int enabled; |
| 68 | int handle; |
| 69 | struct lttng_ust_object_data *obj; |
| 70 | struct lttng_ust_event attr; |
| 71 | char name[LTTNG_UST_SYM_NAME_LEN]; |
| 72 | struct lttng_ht *ctx; |
| 73 | struct lttng_ht_node_str node; |
| 74 | }; |
| 75 | |
| 76 | struct ust_app_channel { |
| 77 | int enabled; |
| 78 | int handle; |
| 79 | char name[LTTNG_UST_SYM_NAME_LEN]; |
| 80 | struct lttng_ust_channel attr; |
| 81 | struct lttng_ust_object_data *obj; |
| 82 | struct ltt_ust_stream_list streams; |
| 83 | struct lttng_ht *ctx; |
| 84 | struct lttng_ht *events; |
| 85 | struct lttng_ht_node_str node; |
| 86 | }; |
| 87 | |
| 88 | struct ust_app_session { |
| 89 | int enabled; |
| 90 | /* started: has the session been in started state at any time ? */ |
| 91 | int started; /* allows detection of start vs restart. */ |
| 92 | int handle; /* used has unique identifier for app session */ |
| 93 | int id; /* session unique identifier */ |
| 94 | struct ltt_ust_metadata *metadata; |
| 95 | struct lttng_ht *channels; /* Registered channels */ |
| 96 | struct lttng_ht_node_ulong node; |
| 97 | char path[PATH_MAX]; |
| 98 | /* UID/GID of the user owning the session */ |
| 99 | uid_t uid; |
| 100 | gid_t gid; |
| 101 | }; |
| 102 | |
| 103 | /* |
| 104 | * Registered traceable applications. Libust registers to the session daemon |
| 105 | * and a linked list is kept of all running traceable app. |
| 106 | */ |
| 107 | struct ust_app { |
| 108 | int sock; |
| 109 | pid_t pid; |
| 110 | pid_t ppid; |
| 111 | uid_t uid; /* User ID that owns the apps */ |
| 112 | gid_t gid; /* Group ID that owns the apps */ |
| 113 | int bits_per_long; |
| 114 | int compatible; /* If the lttng-ust tracer version does not match the |
| 115 | supported version of the session daemon, this flag is |
| 116 | set to 0 (NOT compatible) else 1. */ |
| 117 | struct lttng_ust_tracer_version version; |
| 118 | uint32_t v_major; /* Verion major number */ |
| 119 | uint32_t v_minor; /* Verion minor number */ |
| 120 | char name[17]; /* Process name (short) */ |
| 121 | struct lttng_ht *sessions; |
| 122 | struct lttng_ht_node_ulong pid_n; |
| 123 | struct lttng_ht_node_ulong sock_n; |
| 124 | }; |
| 125 | |
| 126 | #ifdef HAVE_LIBLTTNG_UST_CTL |
| 127 | |
| 128 | int ust_app_register(struct ust_register_msg *msg, int sock); |
| 129 | static inline |
| 130 | int ust_app_register_done(int sock) |
| 131 | { |
| 132 | return ustctl_register_done(sock); |
| 133 | } |
| 134 | void ust_app_unregister(int sock); |
| 135 | unsigned long ust_app_list_count(void); |
| 136 | int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app); |
| 137 | int ust_app_stop_trace(struct ltt_ust_session *usess, struct ust_app *app); |
| 138 | int ust_app_start_trace_all(struct ltt_ust_session *usess); |
| 139 | int ust_app_stop_trace_all(struct ltt_ust_session *usess); |
| 140 | int ust_app_destroy_trace(struct ltt_ust_session *usess, struct ust_app *app); |
| 141 | int ust_app_destroy_trace_all(struct ltt_ust_session *usess); |
| 142 | int ust_app_list_events(struct lttng_event **events); |
| 143 | int ust_app_list_event_fields(struct lttng_event_field **fields); |
| 144 | int ust_app_create_channel_glb(struct ltt_ust_session *usess, |
| 145 | struct ltt_ust_channel *uchan); |
| 146 | int ust_app_create_event_glb(struct ltt_ust_session *usess, |
| 147 | struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent); |
| 148 | int ust_app_disable_event_pid(struct ltt_ust_session *usess, |
| 149 | struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent, |
| 150 | pid_t pid); |
| 151 | int ust_app_enable_event_pid(struct ltt_ust_session *usess, |
| 152 | struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent, |
| 153 | pid_t pid); |
| 154 | int ust_app_disable_channel_glb(struct ltt_ust_session *usess, |
| 155 | struct ltt_ust_channel *uchan); |
| 156 | int ust_app_enable_channel_glb(struct ltt_ust_session *usess, |
| 157 | struct ltt_ust_channel *uchan); |
| 158 | int ust_app_enable_event_glb(struct ltt_ust_session *usess, |
| 159 | struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent); |
| 160 | int ust_app_disable_all_event_glb(struct ltt_ust_session *usess, |
| 161 | struct ltt_ust_channel *uchan); |
| 162 | int ust_app_enable_all_event_glb(struct ltt_ust_session *usess, |
| 163 | struct ltt_ust_channel *uchan); |
| 164 | int ust_app_disable_event_glb(struct ltt_ust_session *usess, |
| 165 | struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent); |
| 166 | int ust_app_add_ctx_event_glb(struct ltt_ust_session *usess, |
| 167 | struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent, |
| 168 | struct ltt_ust_context *uctx); |
| 169 | int ust_app_add_ctx_channel_glb(struct ltt_ust_session *usess, |
| 170 | struct ltt_ust_channel *uchan, struct ltt_ust_context *uctx); |
| 171 | void ust_app_global_update(struct ltt_ust_session *usess, int sock); |
| 172 | |
| 173 | void ust_app_clean_list(void); |
| 174 | void ust_app_ht_alloc(void); |
| 175 | struct lttng_ht *ust_app_get_ht(void); |
| 176 | struct ust_app *ust_app_find_by_pid(pid_t pid); |
| 177 | int ust_app_validate_version(int sock); |
| 178 | int ust_app_calibrate_glb(struct lttng_ust_calibrate *calibrate); |
| 179 | |
| 180 | #else /* HAVE_LIBLTTNG_UST_CTL */ |
| 181 | |
| 182 | static inline |
| 183 | int ust_app_destroy_trace_all(struct ltt_ust_session *usess) |
| 184 | { |
| 185 | return 0; |
| 186 | } |
| 187 | static inline |
| 188 | int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app) |
| 189 | { |
| 190 | return 0; |
| 191 | } |
| 192 | static inline |
| 193 | int ust_app_start_trace_all(struct ltt_ust_session *usess) |
| 194 | { |
| 195 | return 0; |
| 196 | } |
| 197 | static inline |
| 198 | int ust_app_stop_trace_all(struct ltt_ust_session *usess) |
| 199 | { |
| 200 | return 0; |
| 201 | } |
| 202 | static inline |
| 203 | int ust_app_list_events(struct lttng_event **events) |
| 204 | { |
| 205 | return -ENOSYS; |
| 206 | } |
| 207 | static inline |
| 208 | int ust_app_list_event_fields(struct lttng_event_field **fields) |
| 209 | { |
| 210 | return -ENOSYS; |
| 211 | } |
| 212 | static inline |
| 213 | int ust_app_register(struct ust_register_msg *msg, int sock) |
| 214 | { |
| 215 | return -ENOSYS; |
| 216 | } |
| 217 | static inline |
| 218 | int ust_app_register_done(int sock) |
| 219 | { |
| 220 | return -ENOSYS; |
| 221 | } |
| 222 | static inline |
| 223 | void ust_app_unregister(int sock) |
| 224 | { |
| 225 | } |
| 226 | static inline |
| 227 | unsigned int ust_app_list_count(void) |
| 228 | { |
| 229 | return 0; |
| 230 | } |
| 231 | static inline |
| 232 | void ust_app_lock_list(void) |
| 233 | { |
| 234 | } |
| 235 | static inline |
| 236 | void ust_app_unlock_list(void) |
| 237 | { |
| 238 | } |
| 239 | static inline |
| 240 | void ust_app_clean_list(void) |
| 241 | { |
| 242 | } |
| 243 | static inline |
| 244 | struct ust_app_list *ust_app_get_list(void) |
| 245 | { |
| 246 | return NULL; |
| 247 | } |
| 248 | static inline |
| 249 | struct ust_app *ust_app_get_by_pid(pid_t pid) |
| 250 | { |
| 251 | return NULL; |
| 252 | } |
| 253 | static inline |
| 254 | struct lttng_ht *ust_app_get_ht(void) |
| 255 | { |
| 256 | return NULL; |
| 257 | } |
| 258 | static inline |
| 259 | void ust_app_ht_alloc(void) |
| 260 | {} |
| 261 | static inline |
| 262 | void ust_app_global_update(struct ltt_ust_session *usess, int sock) |
| 263 | {} |
| 264 | static inline |
| 265 | int ust_app_disable_channel_glb(struct ltt_ust_session *usess, |
| 266 | struct ltt_ust_channel *uchan) |
| 267 | { |
| 268 | return 0; |
| 269 | } |
| 270 | static inline |
| 271 | int ust_app_enable_channel_glb(struct ltt_ust_session *usess, |
| 272 | struct ltt_ust_channel *uchan) |
| 273 | { |
| 274 | return 0; |
| 275 | } |
| 276 | static inline |
| 277 | int ust_app_create_channel_glb(struct ltt_ust_session *usess, |
| 278 | struct ltt_ust_channel *uchan) |
| 279 | { |
| 280 | return 0; |
| 281 | } |
| 282 | static inline |
| 283 | int ust_app_disable_all_event_glb(struct ltt_ust_session *usess, |
| 284 | struct ltt_ust_channel *uchan) |
| 285 | { |
| 286 | return 0; |
| 287 | } |
| 288 | static inline |
| 289 | int ust_app_enable_all_event_glb(struct ltt_ust_session *usess, |
| 290 | struct ltt_ust_channel *uchan) |
| 291 | { |
| 292 | return 0; |
| 293 | } |
| 294 | static inline |
| 295 | int ust_app_create_event_glb(struct ltt_ust_session *usess, |
| 296 | struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent) |
| 297 | { |
| 298 | return 0; |
| 299 | } |
| 300 | static inline |
| 301 | int ust_app_disable_event_glb(struct ltt_ust_session *usess, |
| 302 | struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent) |
| 303 | { |
| 304 | return 0; |
| 305 | } |
| 306 | static inline |
| 307 | int ust_app_enable_event_glb(struct ltt_ust_session *usess, |
| 308 | struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent) |
| 309 | { |
| 310 | return 0; |
| 311 | } |
| 312 | static inline |
| 313 | int ust_app_add_ctx_event_glb(struct ltt_ust_session *usess, |
| 314 | struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent, |
| 315 | struct ltt_ust_context *uctx) |
| 316 | { |
| 317 | return 0; |
| 318 | } |
| 319 | static inline |
| 320 | int ust_app_add_ctx_channel_glb(struct ltt_ust_session *usess, |
| 321 | struct ltt_ust_channel *uchan, struct ltt_ust_context *uctx) |
| 322 | { |
| 323 | return 0; |
| 324 | } |
| 325 | static inline |
| 326 | int ust_app_enable_event_pid(struct ltt_ust_session *usess, |
| 327 | struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent, |
| 328 | pid_t pid) |
| 329 | { |
| 330 | return 0; |
| 331 | } |
| 332 | static inline |
| 333 | int ust_app_disable_event_pid(struct ltt_ust_session *usess, |
| 334 | struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent, |
| 335 | pid_t pid) |
| 336 | { |
| 337 | return 0; |
| 338 | } |
| 339 | static inline |
| 340 | int ust_app_validate_version(int sock) |
| 341 | { |
| 342 | return 0; |
| 343 | } |
| 344 | static inline |
| 345 | int ust_app_calibrate_glb(struct lttng_ust_calibrate *calibrate) |
| 346 | { |
| 347 | return 0; |
| 348 | } |
| 349 | |
| 350 | #endif /* HAVE_LIBLTTNG_UST_CTL */ |
| 351 | |
| 352 | #endif /* _LTT_UST_APP_H */ |