| 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 | /* |
| 28 | * Application registration data structure. |
| 29 | */ |
| 30 | struct ust_register_msg { |
| 31 | uint32_t major; |
| 32 | uint32_t minor; |
| 33 | pid_t pid; |
| 34 | pid_t ppid; |
| 35 | uid_t uid; |
| 36 | gid_t gid; |
| 37 | char name[16]; |
| 38 | }; |
| 39 | |
| 40 | /* |
| 41 | * Global applications HT used by the session daemon. |
| 42 | */ |
| 43 | struct cds_lfht *ust_app_ht; |
| 44 | |
| 45 | struct cds_lfht *ust_app_sock_key_map; |
| 46 | |
| 47 | struct ust_app_key { |
| 48 | pid_t pid; |
| 49 | int sock; |
| 50 | struct cds_lfht_node node; |
| 51 | }; |
| 52 | |
| 53 | struct ust_app_event { |
| 54 | int enabled; |
| 55 | int handle; |
| 56 | struct lttng_ust_object_data *obj; |
| 57 | char name[LTTNG_UST_SYM_NAME_LEN]; |
| 58 | struct cds_lfht *ctx; |
| 59 | struct cds_lfht_node node; |
| 60 | }; |
| 61 | |
| 62 | struct ust_app_channel { |
| 63 | int enabled; |
| 64 | int handle; |
| 65 | char name[LTTNG_UST_SYM_NAME_LEN]; |
| 66 | struct lttng_ust_channel attr; |
| 67 | struct lttng_ust_object_data *obj; |
| 68 | struct ltt_ust_stream_list streams; |
| 69 | struct cds_lfht *ctx; |
| 70 | struct cds_lfht *events; |
| 71 | struct cds_lfht_node node; |
| 72 | }; |
| 73 | |
| 74 | struct ust_app_session { |
| 75 | int enabled; |
| 76 | int handle; /* Used has unique identifier */ |
| 77 | unsigned int uid; |
| 78 | struct ltt_ust_metadata *metadata; |
| 79 | struct lttng_ust_object_data *obj; |
| 80 | struct cds_lfht *channels; /* Registered channels */ |
| 81 | struct cds_lfht_node node; |
| 82 | }; |
| 83 | |
| 84 | /* |
| 85 | * Registered traceable applications. Libust registers to the session daemon |
| 86 | * and a linked list is kept of all running traceable app. |
| 87 | */ |
| 88 | struct ust_app { |
| 89 | pid_t ppid; |
| 90 | uid_t uid; /* User ID that owns the apps */ |
| 91 | gid_t gid; /* Group ID that owns the apps */ |
| 92 | uint32_t v_major; /* Verion major number */ |
| 93 | uint32_t v_minor; /* Verion minor number */ |
| 94 | char name[17]; /* Process name (short) */ |
| 95 | struct cds_lfht *sessions; |
| 96 | struct cds_lfht_node node; |
| 97 | struct ust_app_key key; |
| 98 | }; |
| 99 | |
| 100 | #ifdef HAVE_LIBLTTNG_UST_CTL |
| 101 | |
| 102 | int ust_app_register(struct ust_register_msg *msg, int sock); |
| 103 | void ust_app_unregister(int sock); |
| 104 | int ust_app_add_channel(struct ltt_ust_session *usess, |
| 105 | struct ltt_ust_channel *uchan); |
| 106 | int ust_app_add_event(struct ltt_ust_session *usess, |
| 107 | struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent); |
| 108 | unsigned long ust_app_list_count(void); |
| 109 | int ust_app_start_trace(struct ltt_ust_session *usess); |
| 110 | void ust_app_global_update(struct ltt_ust_session *usess, int sock); |
| 111 | |
| 112 | void ust_app_clean_list(void); |
| 113 | void ust_app_ht_alloc(void); |
| 114 | struct cds_lfht *ust_app_get_ht(void); |
| 115 | struct ust_app *ust_app_find_by_pid(pid_t pid); |
| 116 | |
| 117 | #else /* HAVE_LIBLTTNG_UST_CTL */ |
| 118 | |
| 119 | static inline |
| 120 | int ust_app_start_trace(struct ltt_ust_session *usess) |
| 121 | { |
| 122 | return -ENOSYS; |
| 123 | } |
| 124 | static inline |
| 125 | int ust_app_register(struct ust_register_msg *msg, int sock) |
| 126 | { |
| 127 | return -ENOSYS; |
| 128 | } |
| 129 | static inline |
| 130 | void ust_app_unregister(int sock) |
| 131 | { |
| 132 | } |
| 133 | static inline |
| 134 | unsigned int ust_app_list_count(void) |
| 135 | { |
| 136 | return 0; |
| 137 | } |
| 138 | static inline |
| 139 | void ust_app_lock_list(void) |
| 140 | { |
| 141 | } |
| 142 | static inline |
| 143 | void ust_app_unlock_list(void) |
| 144 | { |
| 145 | } |
| 146 | static inline |
| 147 | void ust_app_clean_list(void) |
| 148 | { |
| 149 | } |
| 150 | static inline |
| 151 | struct ust_app_list *ust_app_get_list(void) |
| 152 | { |
| 153 | return NULL; |
| 154 | } |
| 155 | static inline |
| 156 | struct ust_app *ust_app_get_by_pid(pid_t pid) |
| 157 | { |
| 158 | return NULL; |
| 159 | } |
| 160 | static inline |
| 161 | int ust_app_add_channel(struct ltt_ust_session *usess, |
| 162 | struct ltt_ust_channel *uchan) |
| 163 | { |
| 164 | return 0; |
| 165 | } |
| 166 | static inline |
| 167 | int ust_app_add_event(struct ltt_ust_session *usess, |
| 168 | struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent) |
| 169 | { |
| 170 | return -ENOSYS; |
| 171 | } |
| 172 | static inline |
| 173 | struct cds_lfht *ust_app_get_ht(void) |
| 174 | { |
| 175 | return NULL; |
| 176 | } |
| 177 | static inline |
| 178 | void ust_app_ht_alloc(void) |
| 179 | { |
| 180 | } |
| 181 | static inline |
| 182 | void ust_app_global_update(struct ltt_ust_session *usess, int sock) |
| 183 | { |
| 184 | } |
| 185 | |
| 186 | #endif /* HAVE_LIBLTTNG_UST_CTL */ |
| 187 | |
| 188 | #endif /* _LTT_UST_APP_H */ |