src/common/defaults.h

   1 /*
   2  * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
   3  *                      Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License, version 2 only,
   7  * as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #ifndef _DEFAULTS_H
  20 #define _DEFAULTS_H
  21
  22 #include <config.h>
  23
  24 /* Default unix group name for tracing. */
  25 #define DEFAULT_TRACING_GROUP                   "tracing"
  26
  27 /*
  28  * This value is defined in the CTF specification (see
  29  * git://git.efficios.com/ctf.git in the file
  30  * common-trace-format-specification.txt.
  31  */
  32 #define DEFAULT_METADATA_NAME                   "metadata"
  33
  34 /* Environment variable to set session daemon binary path. */
  35 #define DEFAULT_SESSIOND_PATH_ENV               "LTTNG_SESSIOND_PATH"
  36
  37 /* Default trace output directory name */
  38 #define DEFAULT_TRACE_DIR_NAME                  "lttng-traces"
  39
  40 /* Default size of a hash table */
  41 #define DEFAULT_HT_SIZE                         4
  42
  43 /* Default session daemon paths */
  44 #define DEFAULT_HOME_DIR                                                "/tmp"
  45 #define DEFAULT_UST_SOCK_DIR                    DEFAULT_HOME_DIR "/ust-app-socks"
  46 #define DEFAULT_GLOBAL_APPS_PIPE                DEFAULT_UST_SOCK_DIR "/global"
  47 #define DEFAULT_TRACE_OUTPUT                    DEFAULT_HOME_DIR "/lttng"
  48
  49 /* Default directory where the trace are written in per domain */
  50 #define DEFAULT_KERNEL_TRACE_DIR                "/kernel"
  51 #define DEFAULT_UST_TRACE_DIR                   "/ust"
  52
  53 /* Subpath for per PID or UID sessions. */
  54 #define DEFAULT_UST_TRACE_PID_PATH               "/pid"
  55 #define DEFAULT_UST_TRACE_UID_PATH               "/uid/%d/%u-bit"
  56
  57 /*
  58  * Default session name for the lttng command line. This default value will
  59  * get the date and time appended (%Y%m%d-%H%M%S) to it.
  60  */
  61 #define DEFAULT_SESSION_NAME                    "auto"
  62
  63 /* Default consumer paths */
  64 #define DEFAULT_CONSUMERD_RUNDIR                "%s"
  65
  66 /* Kernel consumer path */
  67 #define DEFAULT_KCONSUMERD_PATH                 DEFAULT_CONSUMERD_RUNDIR "/kconsumerd"
  68 #define DEFAULT_KCONSUMERD_CMD_SOCK_PATH        DEFAULT_KCONSUMERD_PATH "/command"
  69 #define DEFAULT_KCONSUMERD_ERR_SOCK_PATH        DEFAULT_KCONSUMERD_PATH "/error"
  70
  71 /* UST 64-bit consumer path */
  72 #define DEFAULT_USTCONSUMERD64_PATH             DEFAULT_CONSUMERD_RUNDIR "/ustconsumerd64"
  73 #define DEFAULT_USTCONSUMERD64_CMD_SOCK_PATH    DEFAULT_USTCONSUMERD64_PATH "/command"
  74 #define DEFAULT_USTCONSUMERD64_ERR_SOCK_PATH    DEFAULT_USTCONSUMERD64_PATH "/error"
  75
  76 /* UST 32-bit consumer path */
  77 #define DEFAULT_USTCONSUMERD32_PATH             DEFAULT_CONSUMERD_RUNDIR "/ustconsumerd32"
  78 #define DEFAULT_USTCONSUMERD32_CMD_SOCK_PATH    DEFAULT_USTCONSUMERD32_PATH "/command"
  79 #define DEFAULT_USTCONSUMERD32_ERR_SOCK_PATH    DEFAULT_USTCONSUMERD32_PATH "/error"
  80
  81 /* Relayd path */
  82 #define DEFAULT_RELAYD_RUNDIR                   "%s"
  83 #define DEFAULT_RELAYD_PATH                     DEFAULT_RELAYD_RUNDIR "/relayd"
  84
  85 /* Default lttng run directory */
  86 #define DEFAULT_LTTNG_HOME_ENV_VAR              "LTTNG_HOME"
  87 #define DEFAULT_LTTNG_FALLBACK_HOME_ENV_VAR     "HOME"
  88 #define DEFAULT_LTTNG_RUNDIR                    CONFIG_LTTNG_SYSTEM_RUNDIR
  89 #define DEFAULT_LTTNG_HOME_RUNDIR               "%s/.lttng"
  90 #define DEFAULT_LTTNG_SESSIOND_PIDFILE          "lttng-sessiond.pid"
  91 #define DEFAULT_LTTNG_SESSIOND_AGENTPORT_FILE   "agent.port"
  92 #define DEFAULT_LTTNG_SESSIOND_LOCKFILE         "lttng-sessiond.lck"
  93
  94 /* Default probes list */
  95 #define DEFAULT_LTTNG_KMOD_PROBES               "LTTNG_KMOD_PROBES"
  96
  97 /* Default unix socket path */
  98 #define DEFAULT_GLOBAL_CLIENT_UNIX_SOCK         DEFAULT_LTTNG_RUNDIR "/client-lttng-sessiond"
  99 #define DEFAULT_HOME_CLIENT_UNIX_SOCK           DEFAULT_LTTNG_HOME_RUNDIR "/client-lttng-sessiond"
 100 #define DEFAULT_GLOBAL_HEALTH_UNIX_SOCK         DEFAULT_LTTNG_RUNDIR "/sessiond-health"
 101 #define DEFAULT_HOME_HEALTH_UNIX_SOCK           DEFAULT_LTTNG_HOME_RUNDIR "/sessiond-health"
 102
 103 /* Default consumer health unix socket path */
 104 #define DEFAULT_GLOBAL_USTCONSUMER32_HEALTH_UNIX_SOCK   DEFAULT_LTTNG_RUNDIR "/ustconsumerd32/health"
 105 #define DEFAULT_HOME_USTCONSUMER32_HEALTH_UNIX_SOCK     DEFAULT_LTTNG_HOME_RUNDIR "/ustconsumerd32/health"
 106 #define DEFAULT_GLOBAL_USTCONSUMER64_HEALTH_UNIX_SOCK   DEFAULT_LTTNG_RUNDIR "/ustconsumerd64/health"
 107 #define DEFAULT_HOME_USTCONSUMER64_HEALTH_UNIX_SOCK     DEFAULT_LTTNG_HOME_RUNDIR "/ustconsumerd64/health"
 108 #define DEFAULT_GLOBAL_KCONSUMER_HEALTH_UNIX_SOCK       DEFAULT_LTTNG_RUNDIR "/kconsumerd/health"
 109 #define DEFAULT_HOME_KCONSUMER_HEALTH_UNIX_SOCK         DEFAULT_LTTNG_HOME_RUNDIR "/kconsumerd/health"
 110
 111 /* Default relay health unix socket path */
 112 #define DEFAULT_GLOBAL_RELAY_HEALTH_UNIX_SOCK           DEFAULT_LTTNG_RUNDIR "/relayd/health-%d"
 113 #define DEFAULT_HOME_RELAY_HEALTH_UNIX_SOCK             DEFAULT_LTTNG_HOME_RUNDIR "/relayd/health-%d"
 114
 115 /* Default daemon configuration file path */
 116 #define DEFAULT_SYSTEM_CONFIGPATH               CONFIG_LTTNG_SYSTEM_CONFIGDIR \
 117         "/lttng"
 118
 119 #define DEFAULT_DAEMON_CONFIG_FILE              "lttng.conf"
 120 #define DEFAULT_DAEMON_HOME_CONFIGPATH          DEFAULT_LTTNG_HOME_RUNDIR "/" \
 121         DEFAULT_DAEMON_CONFIG_FILE
 122 #define DEFAULT_DAEMON_SYSTEM_CONFIGPATH        DEFAULT_SYSTEM_CONFIGPATH "/" \
 123         DEFAULT_DAEMON_CONFIG_FILE
 124
 125 /* Default session configuration file path */
 126 #define DEFAULT_SESSION_PATH                    "sessions"
 127 /* Auto load session in that directory. */
 128 #define DEFAULT_SESSION_CONFIG_AUTOLOAD         "auto"
 129 #define DEFAULT_SESSION_HOME_CONFIGPATH         DEFAULT_LTTNG_HOME_RUNDIR "/" \
 130         DEFAULT_SESSION_PATH
 131 #define DEFAULT_SESSION_SYSTEM_CONFIGPATH       DEFAULT_SYSTEM_CONFIGPATH "/" \
 132         DEFAULT_SESSION_PATH
 133 #define DEFAULT_SESSION_CONFIG_FILE_EXTENSION   ".lttng"
 134 #define DEFAULT_SESSION_CONFIG_XSD_FILENAME     "session.xsd"
 135 #define DEFAULT_SESSION_CONFIG_XSD_PATH         CONFIG_LTTNG_SYSTEM_DATADIR "/xml/lttng/"
 136 #define DEFAULT_SESSION_CONFIG_XSD_PATH_ENV     "LTTNG_SESSION_CONFIG_XSD_PATH"
 137
 138 #define DEFAULT_GLOBAL_APPS_UNIX_SOCK \
 139         DEFAULT_LTTNG_RUNDIR "/" LTTNG_UST_SOCK_FILENAME
 140 #define DEFAULT_HOME_APPS_UNIX_SOCK \
 141         DEFAULT_LTTNG_HOME_RUNDIR "/" LTTNG_UST_SOCK_FILENAME
 142 #define DEFAULT_GLOBAL_APPS_WAIT_SHM_PATH \
 143         "/" LTTNG_UST_WAIT_FILENAME
 144 #define DEFAULT_HOME_APPS_WAIT_SHM_PATH \
 145         DEFAULT_GLOBAL_APPS_WAIT_SHM_PATH "-%d"
 146
 147 /*
 148  * Value taken from the hard limit allowed by the kernel when using setrlimit
 149  * with RLIMIT_NOFILE on an Intel i7 CPU and Linux 3.0.3.
 150  */
 151 #define DEFAULT_POLL_SIZE 65535
 152
 153 /*
 154  * Format is %s_%d respectively channel name and CPU number. Eigth bytes
 155  * are added here to add space for the CPU number. I guess 2^8 CPUs is more
 156  * than enough. We might end up with quantum computing in a cell phone when
 157  * reaching this limit.
 158  */
 159 #define DEFAULT_STREAM_NAME_LEN        LTTNG_SYMBOL_NAME_LEN + 8
 160
 161 /* Default channel attributes */
 162 #define DEFAULT_CHANNEL_NAME            "channel0"
 163 /* Default JUL domain channel name. */
 164 #define DEFAULT_JUL_CHANNEL_NAME        "lttng_jul_channel"
 165 /* Default JUL tracepoint name. This is a wildcard for the JUL domain. */
 166 #define DEFAULT_SYS_JUL_EVENT_NAME      "lttng_jul:sys*"
 167 #define DEFAULT_USER_JUL_EVENT_NAME     "lttng_jul:user*"
 168 /* JUL default channel name. */
 169 #define DEFAULT_CHANNEL_OVERWRITE       0
 170 #define DEFAULT_CHANNEL_TRACEFILE_SIZE  0
 171 #define DEFAULT_CHANNEL_TRACEFILE_COUNT 0
 172
 173 /* Must always be a power of 2 */
 174 #define _DEFAULT_CHANNEL_SUBBUF_SIZE    4096    /* bytes */
 175 /* Must always be a power of 2 */
 176 #define _DEFAULT_CHANNEL_SUBBUF_NUM             4
 177 #define _DEFAULT_CHANNEL_SWITCH_TIMER   0       /* usec */
 178 #define _DEFAULT_CHANNEL_LIVE_TIMER     0       /* usec */
 179 #define _DEFAULT_CHANNEL_READ_TIMER             200000  /* usec */
 180 #define _DEFAULT_CHANNEL_OUTPUT                 LTTNG_EVENT_MMAP
 181
 182 /* Metadata channel defaults. */
 183 #define DEFAULT_METADATA_SUBBUF_SIZE    4096
 184 #define DEFAULT_METADATA_SUBBUF_NUM     2
 185 #define DEFAULT_METADATA_CACHE_SIZE     4096
 186 #define DEFAULT_METADATA_SWITCH_TIMER   _DEFAULT_CHANNEL_SWITCH_TIMER
 187 #define DEFAULT_METADATA_READ_TIMER             0
 188 #define DEFAULT_METADATA_OUTPUT                 _DEFAULT_CHANNEL_OUTPUT
 189
 190 /* Kernel has different defaults */
 191
 192 /* DEFAULT_KERNEL_CHANNEL_SUBBUF_SIZE must always be a power of 2 */
 193 #define DEFAULT_KERNEL_CHANNEL_SUBBUF_SIZE              262144    /* bytes */
 194 /*
 195  * DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM must always be a power of 2.
 196  * Update help manually if override.
 197  */
 198 #define DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM               _DEFAULT_CHANNEL_SUBBUF_NUM
 199 /* See lttng-kernel.h enum lttng_kernel_output for channel output */
 200 #define DEFAULT_KERNEL_CHANNEL_OUTPUT                   LTTNG_EVENT_SPLICE
 201 #define DEFAULT_KERNEL_CHANNEL_SWITCH_TIMER             _DEFAULT_CHANNEL_SWITCH_TIMER
 202 #define DEFAULT_KERNEL_CHANNEL_READ_TIMER               _DEFAULT_CHANNEL_READ_TIMER
 203 #define DEFAULT_KERNEL_CHANNEL_LIVE_TIMER               _DEFAULT_CHANNEL_LIVE_TIMER
 204
 205 /* User space defaults */
 206
 207 /* Must be a power of 2 */
 208 #define DEFAULT_UST_PID_CHANNEL_SUBBUF_SIZE             _DEFAULT_CHANNEL_SUBBUF_SIZE
 209 #define DEFAULT_UST_UID_CHANNEL_SUBBUF_SIZE             131072  /* bytes */
 210 /* Must be a power of 2. Update help manuall if override. */
 211 #define DEFAULT_UST_PID_CHANNEL_SUBBUF_NUM              _DEFAULT_CHANNEL_SUBBUF_NUM
 212 #define DEFAULT_UST_UID_CHANNEL_SUBBUF_NUM              _DEFAULT_CHANNEL_SUBBUF_NUM
 213 /* See lttng-ust.h enum lttng_ust_output */
 214 #define DEFAULT_UST_PID_CHANNEL_OUTPUT                  _DEFAULT_CHANNEL_OUTPUT
 215 #define DEFAULT_UST_UID_CHANNEL_OUTPUT                  _DEFAULT_CHANNEL_OUTPUT
 216 /* Timers in usec. */
 217 #define DEFAULT_UST_PID_CHANNEL_SWITCH_TIMER    _DEFAULT_CHANNEL_SWITCH_TIMER
 218 #define DEFAULT_UST_UID_CHANNEL_SWITCH_TIMER    _DEFAULT_CHANNEL_SWITCH_TIMER
 219 #define DEFAULT_UST_PID_CHANNEL_LIVE_TIMER      _DEFAULT_CHANNEL_LIVE_TIMER
 220 #define DEFAULT_UST_UID_CHANNEL_LIVE_TIMER      _DEFAULT_CHANNEL_LIVE_TIMER
 221
 222 #define DEFAULT_UST_PID_CHANNEL_READ_TIMER      0  /* usec */
 223 #define DEFAULT_UST_UID_CHANNEL_READ_TIMER      0  /* usec */
 224
 225 /*
 226  * Default timeout value for the sem_timedwait() call. Blocking forever is not
 227  * wanted so a timeout is used to control the data flow and not freeze the
 228  * session daemon.
 229  */
 230 #define DEFAULT_SEM_WAIT_TIMEOUT            30    /* in seconds */
 231
 232 /* Default bind addresses for network services. */
 233 #define DEFAULT_NETWORK_CONTROL_BIND_ADDRESS    "0.0.0.0"
 234 #define DEFAULT_NETWORK_DATA_BIND_ADDRESS       "0.0.0.0"
 235 #define DEFAULT_NETWORK_VIEWER_BIND_ADDRESS     "localhost"
 236 #define DEFAULT_AGENT_BIND_ADDRESS              "localhost"
 237
 238 /* Default network ports for trace streaming support. */
 239 #define DEFAULT_NETWORK_CONTROL_PORT        5342
 240 #define DEFAULT_NETWORK_DATA_PORT           5343
 241 #define DEFAULT_NETWORK_VIEWER_PORT         5344
 242
 243 /* Agent registration TCP port. */
 244 #define DEFAULT_AGENT_TCP_PORT              5345
 245
 246 /*
 247  * If a thread stalls for this amount of time, it will be considered bogus (bad
 248  * health).
 249  */
 250 #define DEFAULT_HEALTH_CHECK_DELTA_S        20
 251 #define DEFAULT_HEALTH_CHECK_DELTA_NS       0
 252
 253 /*
 254  * Wait period before retrying the lttng_data_pending command in the lttng
 255  * stop command of liblttng-ctl.
 256  */
 257 #define DEFAULT_DATA_AVAILABILITY_WAIT_TIME 200000  /* usec */
 258
 259 /*
 260  * Wait period before retrying the lttng_consumer_flushed_cache when
 261  * the consumer receives metadata.
 262  */
 263 #define DEFAULT_METADATA_AVAILABILITY_WAIT_TIME 200000  /* usec */
 264
 265 /*
 266  * The usual value for the maximum TCP SYN retries time and TCP FIN timeout is
 267  * 180 and 60 seconds on most Linux system and the default value since kernel
 268  * 2.2 thus using the highest value. See tcp(7) for more details.
 269  */
 270 #define DEFAULT_INET_TCP_TIMEOUT                        180     /* sec */
 271
 272 /*
 273  * Default receiving and sending timeout for an application socket.
 274  */
 275 #define DEFAULT_APP_SOCKET_RW_TIMEOUT       5  /* sec */
 276 #define DEFAULT_APP_SOCKET_TIMEOUT_ENV      "LTTNG_APP_SOCKET_TIMEOUT"
 277
 278 #define DEFAULT_UST_STREAM_FD_NUM                       2 /* Number of fd per UST stream. */
 279
 280 #define DEFAULT_SNAPSHOT_NAME                           "snapshot"
 281 #define DEFAULT_SNAPSHOT_MAX_SIZE                       0 /* Unlimited. */
 282
 283 /* Suffix of an index file. */
 284 #define DEFAULT_INDEX_FILE_SUFFIX                       ".idx"
 285 #define DEFAULT_INDEX_DIR                                       "index"
 286
 287 /* Default lttng command live timer value in usec. */
 288 #define DEFAULT_LTTNG_LIVE_TIMER                        1000000
 289
 290 extern size_t default_channel_subbuf_size;
 291 extern size_t default_metadata_subbuf_size;
 292 extern size_t default_ust_pid_channel_subbuf_size;
 293 extern size_t default_ust_uid_channel_subbuf_size;
 294 extern size_t default_kernel_channel_subbuf_size;
 295
 296 /*
 297  * Returns the default subbuf size.
 298  *
 299  * This function depends on a value that is set at constructor time, so it is
 300  * unsafe to call it from another constructor.
 301  */
 302 static inline
 303 size_t default_get_channel_subbuf_size(void)
 304 {
 305         return default_channel_subbuf_size;
 306 }
 307
 308 /*
 309  * Returns the default metadata subbuf size.
 310  *
 311  * This function depends on a value that is set at constructor time, so it is
 312  * unsafe to call it from another constructor.
 313  */
 314 static inline
 315 size_t default_get_metadata_subbuf_size(void)
 316 {
 317         return default_metadata_subbuf_size;
 318 }
 319
 320 /*
 321  * Returns the default subbuf size for the kernel domain.
 322  *
 323  * This function depends on a value that is set at constructor time, so it is
 324  * unsafe to call it from another constructor.
 325  */
 326 static inline
 327 size_t default_get_kernel_channel_subbuf_size(void)
 328 {
 329         return default_kernel_channel_subbuf_size;
 330 }
 331
 332 /*
 333  * Returns the default subbuf size for the UST domain per PID.
 334  *
 335  * This function depends on a value that is set at constructor time, so it is
 336  * unsafe to call it from another constructor.
 337  */
 338 static inline
 339 size_t default_get_ust_pid_channel_subbuf_size(void)
 340 {
 341         return default_ust_pid_channel_subbuf_size;
 342 }
 343
 344 /*
 345  * Returns the default subbuf size for the UST domain per UID.
 346  *
 347  * This function depends on a value that is set at constructor time, so it is
 348  * unsafe to call it from another constructor.
 349  */
 350 static inline
 351 size_t default_get_ust_uid_channel_subbuf_size(void)
 352 {
 353         return default_ust_uid_channel_subbuf_size;
 354 }
 355
 356 #endif /* _DEFAULTS_H */