root/net/inet/proc.c

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DEFINITIONS

This source file includes following definitions.
  1. get__netinfo
  2. tcp_get_info
  3. udp_get_info
  4. raw_get_info

   1 /*
   2  * INET         An implementation of the TCP/IP protocol suite for the LINUX
   3  *              operating system.  INET is implemented using the  BSD Socket
   4  *              interface as the means of communication with the user level.
   5  *
   6  *              This file implements the various access functions for the
   7  *              PROC file system.  It is mainly used for debugging and
   8  *              statistics.
   9  *
  10  * Version:     @(#)proc.c      1.0.5   05/27/93
  11  *
  12  * Authors:     Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
  13  *              Gerald J. Heim, <heim@peanuts.informatik.uni-tuebingen.de>
  14  *              Fred Baumgarten, <dc6iq@insu1.etec.uni-karlsruhe.de>
  15  *
  16  * Fixes:
  17  *              Alan Cox        :       UDP sockets show the rxqueue/txqueue
  18  *                                      using hint flag for the netinfo.
  19  *      Pauline Middelink       :       Pidentd support
  20  *
  21  * To Do:
  22  *              Put the creating userid in the proc/net/... files. This will
  23  *              allow us to write an RFC931 daemon for Linux
  24  *
  25  *              This program is free software; you can redistribute it and/or
  26  *              modify it under the terms of the GNU General Public License
  27  *              as published by the Free Software Foundation; either version
  28  *              2 of the License, or (at your option) any later version.
  29  */
  30 #include <asm/system.h>
  31 #include <linux/autoconf.h>
  32 #include <linux/sched.h>
  33 #include <linux/socket.h>
  34 #include <linux/net.h>
  35 #include <linux/un.h>
  36 #include <linux/in.h>
  37 #include <linux/param.h>
  38 #include "inet.h"
  39 #include "dev.h"
  40 #include "ip.h"
  41 #include "protocol.h"
  42 #include "tcp.h"
  43 #include "udp.h"
  44 #include "skbuff.h"
  45 #include "sock.h"
  46 #include "raw.h"
  47 
  48 /*
  49  * Get__netinfo returns the length of that string.
  50  *
  51  * KNOWN BUGS
  52  *  As in get_unix_netinfo, the buffer might be too small. If this
  53  *  happens, get__netinfo returns only part of the available infos.
  54  */
  55 static int
  56 get__netinfo(struct proto *pro, char *buffer, int format)
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  57 {
  58   struct sock **s_array;
  59   struct sock *sp;
  60   char *pos=buffer;
  61   int i;
  62   int timer_active;
  63   unsigned long  dest, src;
  64   unsigned short destp, srcp;
  65 
  66   s_array = pro->sock_array;
  67   pos+=sprintf(pos, "sl  local_address rem_address   st tx_queue rx_queue tr tm->when uid\n");
  68   for(i = 0; i < SOCK_ARRAY_SIZE; i++) {
  69         sp = s_array[i];
  70         while(sp != NULL) {
  71                 dest  = sp->daddr;
  72                 src   = sp->saddr;
  73                 destp = sp->dummy_th.dest;
  74                 srcp  = sp->dummy_th.source;
  75 
  76                 /* Since we are Little Endian we need to swap the bytes :-( */
  77                 destp = ntohs(destp);
  78                 srcp  = ntohs(srcp);
  79 
  80                 timer_active = del_timer(&sp->timer);
  81                 if (!timer_active)
  82                         sp->timer.expires = 0;
  83                 pos+=sprintf(pos, "%2d: %08lX:%04X %08lX:%04X %02X %08lX:%08lX %02X:%08lX %08X %d\n",
  84                         i, src, srcp, dest, destp, sp->state, 
  85                         format==0?sp->send_seq-sp->rcv_ack_seq:sp->rmem_alloc, 
  86                         format==0?sp->acked_seq-sp->copied_seq:sp->wmem_alloc,
  87                         timer_active, sp->timer.expires, (unsigned) sp->retransmits,
  88                         SOCK_INODE(sp->socket)->i_uid);
  89                 if (timer_active)
  90                         add_timer(&sp->timer);
  91 
  92                 /* Is place in buffer too rare? then abort. */
  93                 if (pos > buffer+PAGE_SIZE-80) {
  94                         printk("oops, too many %s sockets for netinfo.\n",
  95                                         pro->name);
  96                         return(strlen(buffer));
  97                 }
  98 
  99                 /*
 100                  * All sockets with (port mod SOCK_ARRAY_SIZE) = i
 101                  * are kept in sock_array[i], so we must follow the
 102                  * 'next' link to get them all.
 103                  */
 104                 sp = sp->next;
 105         }
 106   }
 107   return(strlen(buffer));
 108 } 
 109 
 110 
 111 int tcp_get_info(char *buffer)
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 112 {
 113   return get__netinfo(&tcp_prot, buffer,0);
 114 }
 115 
 116 
 117 int udp_get_info(char *buffer)
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 118 {
 119   return get__netinfo(&udp_prot, buffer,1);
 120 }
 121 
 122 
 123 int raw_get_info(char *buffer)
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 124 {
 125   return get__netinfo(&raw_prot, buffer,1);
 126 }

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