lttng-sessiond/ust-app.h

   1 /*
   2  * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; only version 2
   7  * of the License.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  17  */
  18
  19 #ifndef _LTT_UST_APP_H
  20 #define _LTT_UST_APP_H
  21
  22 #include <stdint.h>
  23 #include <urcu/list.h>
  24
  25 #include "trace-ust.h"
  26
  27 #define UST_APP_EVENT_LIST_SIZE 32
  28
  29 extern int ust_consumerd64_fd, ust_consumerd32_fd;
  30
  31 /*
  32  * Application registration data structure.
  33  */
  34 struct ust_register_msg {
  35         uint32_t major;
  36         uint32_t minor;
  37         pid_t pid;
  38         pid_t ppid;
  39         uid_t uid;
  40         gid_t gid;
  41         uint32_t bits_per_long;
  42         char name[16];
  43 };
  44
  45 /*
  46  * Global applications HT used by the session daemon.
  47  */
  48 struct lttng_ht *ust_app_ht;
  49
  50 struct lttng_ht *ust_app_sock_key_map;
  51
  52 struct ust_app_key {
  53         pid_t pid;
  54         int sock;
  55         struct lttng_ht_node_ulong node;
  56 };
  57
  58 struct ust_app_ctx {
  59         int handle;
  60         struct lttng_ust_context ctx;
  61         struct lttng_ust_object_data *obj;
  62         struct lttng_ht_node_ulong node;
  63 };
  64
  65 struct ust_app_event {
  66         int enabled;
  67         int handle;
  68         struct lttng_ust_object_data *obj;
  69         struct lttng_ust_event attr;
  70         char name[LTTNG_UST_SYM_NAME_LEN];
  71         struct lttng_ht *ctx;
  72         struct lttng_ht_node_str node;
  73 };
  74
  75 struct ust_app_channel {
  76         int enabled;
  77         int handle;
  78         char name[LTTNG_UST_SYM_NAME_LEN];
  79         struct lttng_ust_channel attr;
  80         struct lttng_ust_object_data *obj;
  81         struct ltt_ust_stream_list streams;
  82         struct lttng_ht *ctx;
  83         struct lttng_ht *events;
  84         struct lttng_ht_node_str node;
  85 };
  86
  87 struct ust_app_session {
  88         int enabled;
  89         /* started: has the session been in started state at any time ? */
  90         int started;  /* allows detection of start vs restart. */
  91         int handle;   /* used has unique identifier for app session */
  92         int id;       /* session unique identifier */
  93         struct ltt_ust_metadata *metadata;
  94         struct lttng_ht *channels; /* Registered channels */
  95         struct lttng_ht_node_ulong node;
  96         char path[PATH_MAX];
  97         /* UID/GID of the user owning the session */
  98         uid_t uid;
  99         gid_t gid;
 100 };
 101
 102 /*
 103  * Registered traceable applications. Libust registers to the session daemon
 104  * and a linked list is kept of all running traceable app.
 105  */
 106 struct ust_app {
 107         pid_t ppid;
 108         uid_t uid;           /* User ID that owns the apps */
 109         gid_t gid;           /* Group ID that owns the apps */
 110         int bits_per_long;
 111         uint32_t v_major;    /* Verion major number */
 112         uint32_t v_minor;    /* Verion minor number */
 113         char name[17];       /* Process name (short) */
 114         struct lttng_ht *sessions;
 115         struct lttng_ht_node_ulong node;
 116         struct ust_app_key key;
 117 };
 118
 119 #ifdef HAVE_LIBLTTNG_UST_CTL
 120
 121 int ust_app_register(struct ust_register_msg *msg, int sock);
 122 static inline
 123 int ust_app_register_done(int sock)
 124 {
 125         return ustctl_register_done(sock);
 126 }
 127 void ust_app_unregister(int sock);
 128 unsigned long ust_app_list_count(void);
 129 int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app);
 130 int ust_app_stop_trace(struct ltt_ust_session *usess, struct ust_app *app);
 131 int ust_app_start_trace_all(struct ltt_ust_session *usess);
 132 int ust_app_stop_trace_all(struct ltt_ust_session *usess);
 133 int ust_app_destroy_trace(struct ltt_ust_session *usess, struct ust_app *app);
 134 int ust_app_destroy_trace_all(struct ltt_ust_session *usess);
 135 int ust_app_list_events(struct lttng_event **events);
 136 int ust_app_create_channel_glb(struct ltt_ust_session *usess,
 137                 struct ltt_ust_channel *uchan);
 138 int ust_app_create_event_glb(struct ltt_ust_session *usess,
 139                 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
 140 int ust_app_disable_event_pid(struct ltt_ust_session *usess,
 141                 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
 142                 pid_t pid);
 143 int ust_app_enable_event_pid(struct ltt_ust_session *usess,
 144                 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
 145                 pid_t pid);
 146 int ust_app_disable_channel_glb(struct ltt_ust_session *usess,
 147                 struct ltt_ust_channel *uchan);
 148 int ust_app_enable_channel_glb(struct ltt_ust_session *usess,
 149                 struct ltt_ust_channel *uchan);
 150 int ust_app_enable_event_glb(struct ltt_ust_session *usess,
 151                 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
 152 int ust_app_disable_all_event_glb(struct ltt_ust_session *usess,
 153                 struct ltt_ust_channel *uchan);
 154 int ust_app_enable_all_event_glb(struct ltt_ust_session *usess,
 155                 struct ltt_ust_channel *uchan);
 156 int ust_app_disable_event_glb(struct ltt_ust_session *usess,
 157                 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
 158 int ust_app_add_ctx_event_glb(struct ltt_ust_session *usess,
 159                 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
 160                 struct ltt_ust_context *uctx);
 161 int ust_app_add_ctx_channel_glb(struct ltt_ust_session *usess,
 162                 struct ltt_ust_channel *uchan, struct ltt_ust_context *uctx);
 163 void ust_app_global_update(struct ltt_ust_session *usess, int sock);
 164
 165 void ust_app_clean_list(void);
 166 void ust_app_ht_alloc(void);
 167 struct lttng_ht *ust_app_get_ht(void);
 168 struct ust_app *ust_app_find_by_pid(pid_t pid);
 169
 170 #else /* HAVE_LIBLTTNG_UST_CTL */
 171
 172 static inline
 173 int ust_app_destroy_trace_all(struct ltt_ust_session *usess)
 174 {
 175         return 0;
 176 }
 177 static inline
 178 int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app)
 179 {
 180         return 0;
 181 }
 182 static inline
 183 int ust_app_start_trace_all(struct ltt_ust_session *usess)
 184 {
 185         return 0;
 186 }
 187 static inline
 188 int ust_app_stop_trace_all(struct ltt_ust_session *usess)
 189 {
 190         return 0;
 191 }
 192 static inline
 193 int ust_app_list_events(struct lttng_event **events)
 194 {
 195         return 0;
 196 }
 197 static inline
 198 int ust_app_register(struct ust_register_msg *msg, int sock)
 199 {
 200         return -ENOSYS;
 201 }
 202 static inline
 203 int ust_app_register_done(int sock)
 204 {
 205         return -ENOSYS;
 206 }
 207 static inline
 208 void ust_app_unregister(int sock)
 209 {
 210 }
 211 static inline
 212 unsigned int ust_app_list_count(void)
 213 {
 214         return 0;
 215 }
 216 static inline
 217 void ust_app_lock_list(void)
 218 {
 219 }
 220 static inline
 221 void ust_app_unlock_list(void)
 222 {
 223 }
 224 static inline
 225 void ust_app_clean_list(void)
 226 {
 227 }
 228 static inline
 229 struct ust_app_list *ust_app_get_list(void)
 230 {
 231         return NULL;
 232 }
 233 static inline
 234 struct ust_app *ust_app_get_by_pid(pid_t pid)
 235 {
 236         return NULL;
 237 }
 238 static inline
 239 struct lttng_ht *ust_app_get_ht(void)
 240 {
 241         return NULL;
 242 }
 243 static inline
 244 void ust_app_ht_alloc(void)
 245 {}
 246 static inline
 247 void ust_app_global_update(struct ltt_ust_session *usess, int sock)
 248 {}
 249 static inline
 250 int ust_app_disable_channel_glb(struct ltt_ust_session *usess,
 251                 struct ltt_ust_channel *uchan)
 252 {
 253         return 0;
 254 }
 255 static inline
 256 int ust_app_enable_channel_glb(struct ltt_ust_session *usess,
 257                 struct ltt_ust_channel *uchan)
 258 {
 259         return 0;
 260 }
 261 static inline
 262 int ust_app_create_channel_glb(struct ltt_ust_session *usess,
 263                 struct ltt_ust_channel *uchan)
 264 {
 265         return 0;
 266 }
 267 static inline
 268 int ust_app_disable_all_event_glb(struct ltt_ust_session *usess,
 269                 struct ltt_ust_channel *uchan)
 270 {
 271         return 0;
 272 }
 273 static inline
 274 int ust_app_enable_all_event_glb(struct ltt_ust_session *usess,
 275                 struct ltt_ust_channel *uchan)
 276 {
 277         return 0;
 278 }
 279 static inline
 280 int ust_app_create_event_glb(struct ltt_ust_session *usess,
 281                 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
 282 {
 283         return 0;
 284 }
 285 static inline
 286 int ust_app_disable_event_glb(struct ltt_ust_session *usess,
 287                 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
 288 {
 289         return 0;
 290 }
 291 static inline
 292 int ust_app_enable_event_glb(struct ltt_ust_session *usess,
 293                 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
 294 {
 295         return 0;
 296 }
 297 static inline
 298 int ust_app_add_ctx_event_glb(struct ltt_ust_session *usess,
 299                 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
 300                 struct ltt_ust_context *uctx)
 301 {
 302         return 0;
 303 }
 304 static inline
 305 int ust_app_add_ctx_channel_glb(struct ltt_ust_session *usess,
 306                 struct ltt_ust_channel *uchan, struct ltt_ust_context *uctx)
 307 {
 308         return 0;
 309 }
 310 static inline
 311 int ust_app_enable_event_pid(struct ltt_ust_session *usess,
 312                 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
 313                 pid_t pid)
 314 {
 315         return 0;
 316 }
 317 static inline
 318 int ust_app_disable_event_pid(struct ltt_ust_session *usess,
 319                 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
 320                 pid_t pid)
 321 {
 322         return 0;
 323 }
 324
 325 #endif /* HAVE_LIBLTTNG_UST_CTL */
 326
 327 #endif /* _LTT_UST_APP_H */