src/common/sessiond-comm/jul.h

   1 /*
   2  * Copyright (C) 2013 - David Goulet <dgoulet@efficios.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License, version 2 only, as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  11  * more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along with
  14  * this program; if not, write to the Free Software Foundation, Inc., 51
  15  * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  16  */
  17
  18 #ifndef _JUL_COMM
  19 #define _JUL_COMM
  20
  21 #define _GNU_SOURCE
  22 #include <stdint.h>
  23
  24 #include <lttng/lttng.h>
  25
  26 /*
  27  * Command value pass in the header.
  28  */
  29 enum lttcomm_jul_command {
  30         JUL_CMD_LIST       = 1,
  31         JUL_CMD_ENABLE     = 2,
  32         JUL_CMD_DISABLE    = 3,
  33         JUL_CMD_REG_DONE   = 4, /* End registration process. */
  34 };
  35
  36 /*
  37  * Return code from the Java agent.
  38  */
  39 enum lttcomm_jul_ret_code {
  40         JUL_RET_CODE_SUCCESS      = 1,
  41         JUL_RET_CODE_INVALID      = 2,
  42         JUL_RET_CODE_UNKNOWN_NAME = 3,
  43 };
  44
  45 /*
  46  * JUL application communication header.
  47  */
  48 struct lttcomm_jul_hdr {
  49         uint64_t data_size;             /* data size following this header */
  50         uint32_t cmd;                   /* Enum of JUL command. */
  51         uint32_t cmd_version;   /* command version */
  52 } LTTNG_PACKED;
  53
  54 /*
  55  * Enable event command payload.
  56  */
  57 struct lttcomm_jul_enable {
  58         uint32_t loglevel;
  59         uint32_t loglevel_type;
  60         char name[LTTNG_SYMBOL_NAME_LEN];
  61 } LTTNG_PACKED;
  62
  63 /*
  64  * Disable event command payload.
  65  */
  66 struct lttcomm_jul_disable {
  67         char name[LTTNG_SYMBOL_NAME_LEN];
  68 } LTTNG_PACKED;
  69
  70 /*
  71  * Generic reply coming from the Java Agent.
  72  */
  73 struct lttcomm_jul_generic_reply {
  74         uint32_t ret_code;
  75 } LTTNG_PACKED;
  76
  77 /*
  78  * List command reply header.
  79  */
  80 struct lttcomm_jul_list_reply_hdr {
  81         uint32_t ret_code;
  82         uint32_t data_size;
  83 } LTTNG_PACKED;
  84
  85 /*
  86  * List command reply payload coming from the Java Agent.
  87  */
  88 struct lttcomm_jul_list_reply {
  89         uint32_t nb_event;
  90         /* List of event name each of them ending by a NULL byte. */
  91         char payload[];
  92 } LTTNG_PACKED;
  93
  94 #endif  /* _JUL_COMM */