ltt-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 /*
  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 struct cds_lfht *ust_app_ht;
  41
  42 struct cds_lfht *ust_app_sock_key_map;
  43
  44 struct ust_app_key {
  45         pid_t pid;
  46         int sock;
  47         struct cds_lfht_node node;
  48 };
  49
  50 /*
  51  * Registered traceable applications. Libust registers to the session daemon
  52  * and a linked list is kept of all running traceable app.
  53  */
  54 struct ust_app {
  55         //int sock;
  56         //pid_t pid;
  57         pid_t ppid;
  58         uid_t uid;           /* User ID that owns the apps */
  59         gid_t gid;           /* Group ID that owns the apps */
  60         uint32_t v_major;    /* Verion major number */
  61         uint32_t v_minor;    /* Verion minor number */
  62         char name[17];       /* Process name (short) */
  63         struct cds_lfht *channels;
  64         struct cds_lfht_node node;
  65         struct ust_app_key key;
  66 };
  67
  68 #ifdef CONFIG_LTTNG_TOOLS_HAVE_UST
  69
  70 int ust_app_register(struct ust_register_msg *msg, int sock);
  71 void ust_app_unregister(int sock);
  72 unsigned long ust_app_list_count(void);
  73
  74 void ust_app_clean_list(void);
  75 void ust_app_ht_alloc(void);
  76 struct cds_lfht *ust_app_get_ht(void);
  77 struct ust_app *ust_app_find_by_pid(pid_t pid);
  78
  79 #else
  80
  81 static inline
  82 int ust_app_register(struct ust_register_msg *msg, int sock)
  83 {
  84         return -ENOSYS;
  85 }
  86 static inline
  87 void ust_app_unregister(int sock)
  88 {
  89 }
  90 static inline
  91 unsigned int ust_app_list_count(void)
  92 {
  93         return 0;
  94 }
  95
  96 static inline
  97 void ust_app_lock_list(void)
  98 {
  99 }
 100 static inline
 101 void ust_app_unlock_list(void)
 102 {
 103 }
 104 static inline
 105 void ust_app_clean_list(void)
 106 {
 107 }
 108 static inline
 109 struct ust_app_list *ust_app_get_list(void)
 110 {
 111         return NULL;
 112 }
 113 static inline
 114 struct ust_app *ust_app_get_by_pid(pid_t pid)
 115 {
 116         return NULL;
 117 }
 118
 119 #endif
 120
 121 #endif /* _LTT_UST_APP_H */