1 /*
   2  * This file and its contents are supplied under the terms of the
   3  * Common Development and Distribution License ("CDDL"), version 1.0.
   4  * You may only use this file in accordance with the terms of version
   5  * 1.0 of the CDDL.
   6  *
   7  * A full copy of the text of the CDDL should have accompanied this
   8  * source.  A copy of the CDDL is also available via the Internet at
   9  * http://www.illumos.org/license/CDDL.
  10  */
  11 
  12 /*
  13  * Copyright 2015 Mohamed A. Khalfella <khalfella@gmail.com>
  14  */
  15 
  16 #ifndef _SYS_PIDNODE_H
  17 #define _SYS_PIDNODE_H
  18 
  19 #include <sys/avl.h>
  20 
  21 #ifdef  __cplusplus
  22 extern "C" {
  23 #endif
  24 
  25 /*
  26  * Network connections initiated/accepted by user processes are either
  27  * socket based connections or stream-bases connections. conn_pid_info_t
  28  * expose the type of the connection in the cpi_contents field.
  29  */
  30 
  31 #define CONN_PID_INFO_NON       0       /* terminated process/kernel sockets */
  32 #define CONN_PID_INFO_SOC       1       /* socket netwrok connection */
  33 #define CONN_PID_INFO_XTI       2       /* stream network connection */
  34 
  35 typedef struct conn_pid_info_s {
  36         uint16_t        cpi_contents;   /* CONN_PID_INFO_* */
  37         uint32_t        cpi_pids_cnt;   /* # of elements in cpi_pids */
  38         uint32_t        cpi_tot_size;   /* total size of hdr + pids */
  39         pid_t           cpi_pids[1];    /* variable length array of pids */
  40 } conn_pid_info_t;
  41 
  42 #if defined(_KERNEL)
  43 
  44 typedef struct pid_node_s {
  45         avl_node_t      pn_ref_link;
  46         uint32_t        pn_count;
  47         pid_t           pn_pid;
  48 } pid_node_t;
  49 
  50 extern int pid_node_comparator(const void *, const void *);
  51 
  52 #endif /* defined(_KERNEL) */
  53 
  54 #ifdef  __cplusplus
  55 }
  56 #endif
  57 
  58 #endif /* _SYS_PIDNODE_H */