| 1 | /* Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or |
| 4 | * modify it under the terms of the GNU General Public License |
| 5 | * as published by the Free Software Foundation; either version 2 |
| 6 | * of the License, or (at your option) any later version. |
| 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, MA 02111-1307, USA. |
| 16 | * |
| 17 | */ |
| 18 | |
| 19 | #ifndef _LIBLTTSESSIONDCOMM_H |
| 20 | #define _LIBLTTSESSIONDCOMM_H |
| 21 | |
| 22 | #include <limits.h> |
| 23 | #include <uuid/uuid.h> |
| 24 | |
| 25 | /* Default unix socket path */ |
| 26 | #define DEFAULT_GLOBAL_CLIENT_UNIX_SOCK "/tmp/client-ltt-sessiond" |
| 27 | #define DEFAULT_GLOBAL_APPS_UNIX_SOCK "/tmp/apps-ltt-sessiond" |
| 28 | #define DEFAULT_HOME_APPS_UNIX_SOCK "%s/.apps-ltt-sessiond" |
| 29 | #define DEFAULT_HOME_CLIENT_UNIX_SOCK "%s/.client-ltt-sessiond" |
| 30 | |
| 31 | /* Queue size of listen(2) */ |
| 32 | #define MAX_LISTEN 10 |
| 33 | |
| 34 | /* Get the error code index from 0 since |
| 35 | * LTTCOMM_OK start at 1000 |
| 36 | */ |
| 37 | #define LTTCOMM_ERR_INDEX(code) (code - LTTCOMM_OK) |
| 38 | |
| 39 | enum lttcomm_command_type { |
| 40 | LTTNG_CREATE_SESSION, |
| 41 | LTTNG_DESTROY_SESSION, |
| 42 | LTTNG_FORCE_SUBBUF_SWITCH, |
| 43 | LTTNG_GET_ALL_SESSION, |
| 44 | LTTNG_GET_SOCK_PATH, |
| 45 | LTTNG_GET_SUBBUF_NUM_SIZE, |
| 46 | LTTNG_LIST_MARKERS, |
| 47 | LTTNG_LIST_SESSIONS, |
| 48 | LTTNG_LIST_TRACE_EVENTS, |
| 49 | LTTNG_SETUP_TRACE, |
| 50 | LTTNG_SET_SOCK_PATH, |
| 51 | LTTNG_SET_SUBBUF_NUM, |
| 52 | LTTNG_SET_SUBBUF_SIZE, |
| 53 | UST_ALLOC_TRACE, |
| 54 | UST_CREATE_TRACE, |
| 55 | UST_DESTROY_TRACE, |
| 56 | UST_DISABLE_MARKER, |
| 57 | UST_ENABLE_MARKER, |
| 58 | UST_LIST_APPS, |
| 59 | UST_START_TRACE, |
| 60 | UST_STOP_TRACE, |
| 61 | }; |
| 62 | |
| 63 | /* |
| 64 | * lttcomm error code. |
| 65 | */ |
| 66 | enum lttcomm_return_code { |
| 67 | LTTCOMM_OK = 1000, /* Ok */ |
| 68 | LTTCOMM_ERR, /* Unknown Error */ |
| 69 | LTTCOMM_UND, /* Undefine command */ |
| 70 | LTTCOMM_ALLOC_FAIL, /* Trace allocation fail */ |
| 71 | LTTCOMM_NO_SESSION, /* No session found */ |
| 72 | LTTCOMM_CREATE_FAIL, /* Create trace fail */ |
| 73 | LTTCOMM_SESSION_FAIL, /* Create session fail */ |
| 74 | LTTCOMM_START_FAIL, /* Start tracing fail */ |
| 75 | LTTCOMM_LIST_FAIL, /* Listing apps fail */ |
| 76 | LTTCOMM_NO_APPS, /* No traceable application */ |
| 77 | LTTCOMM_NO_SESS, /* No sessions available */ |
| 78 | LTTCOMM_FATAL, /* Session daemon had a fatal error */ |
| 79 | LTTCOMM_NR, /* Last element */ |
| 80 | }; |
| 81 | |
| 82 | /* |
| 83 | * Data structure for ltt-session received message |
| 84 | */ |
| 85 | struct lttcomm_session_msg { |
| 86 | /* Common data to almost all command */ |
| 87 | enum lttcomm_command_type cmd_type; |
| 88 | uuid_t session_id; |
| 89 | char trace_name[NAME_MAX]; |
| 90 | char session_name[NAME_MAX]; |
| 91 | pid_t pid; |
| 92 | union { |
| 93 | struct { |
| 94 | int auto_session; |
| 95 | } create_session; |
| 96 | /* Marker data */ |
| 97 | struct { |
| 98 | char channel[NAME_MAX]; |
| 99 | char marker[NAME_MAX]; |
| 100 | } marker; |
| 101 | /* SET_SOCK_PATH */ |
| 102 | struct { |
| 103 | char sock_path[PATH_MAX]; |
| 104 | } sock_path; |
| 105 | /* SET_SUBBUF_NUM */ |
| 106 | struct { |
| 107 | unsigned int subbuf_num; |
| 108 | char channel[NAME_MAX]; |
| 109 | } subbuf_num; |
| 110 | /* SET_SUBBUF_SIZE */ |
| 111 | struct { |
| 112 | unsigned int subbuf_size; |
| 113 | char channel[NAME_MAX]; |
| 114 | } subbuf_size; |
| 115 | } u; |
| 116 | }; |
| 117 | |
| 118 | /* |
| 119 | * Data structure for the lttng client response. |
| 120 | * |
| 121 | * This data structure is the control struct use in |
| 122 | * the header of the transmission. NEVER put variable |
| 123 | * size data in here. |
| 124 | */ |
| 125 | struct lttcomm_lttng_msg { |
| 126 | enum lttcomm_command_type cmd_type; |
| 127 | enum lttcomm_return_code ret_code; |
| 128 | uuid_t session_id; |
| 129 | pid_t pid; |
| 130 | char trace_name[NAME_MAX]; |
| 131 | unsigned int size_payload; |
| 132 | }; |
| 133 | |
| 134 | extern int lttcomm_create_unix_sock(const char *pathname); |
| 135 | extern int lttcomm_connect_unix_sock(const char *pathname); |
| 136 | extern int lttcomm_accept_unix_sock(int sock); |
| 137 | extern int lttcomm_listen_unix_sock(int sock); |
| 138 | extern ssize_t lttcomm_recv_unix_sock(int sock, void *buf, size_t len); |
| 139 | extern ssize_t lttcomm_send_unix_sock(int sock, void *buf, size_t len); |
| 140 | extern const char *lttcomm_get_readable_code(enum lttcomm_return_code code); |
| 141 | |
| 142 | #endif /* _LIBLTTSESSIONDCOMM_H */ |