2 * collectd - src/tcpconns.c
3 * Copyright (C) 2007,2008 Florian octo Forster
4 * Copyright (C) 2008 Michael Stapelberg
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; only version 2 of the License is applicable.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * Florian octo Forster <octo at verplant.org>
21 * Michael Stapelberg <michael+git at stapelberg.de>
25 * Code within `HAVE_LIBKVM_NLIST' blocks is provided under the following
28 * $collectd: parts of tcpconns.c, 2008/08/08 03:48:30 Michael Stapelberg $
29 * $OpenBSD: inet.c,v 1.100 2007/06/19 05:28:30 ray Exp $
30 * $NetBSD: inet.c,v 1.14 1995/10/03 21:42:37 thorpej Exp $
32 * Copyright (c) 1983, 1988, 1993
33 * The Regents of the University of California. All rights reserved.
35 * Redistribution and use in source and binary forms, with or without
36 * modification, are permitted provided that the following conditions
38 * 1. Redistributions of source code must retain the above copyright
39 * notice, this list of conditions and the following disclaimer.
40 * 2. Redistributions in binary form must reproduce the above copyright
41 * notice, this list of conditions and the following disclaimer in the
42 * documentation and/or other materials provided with the distribution.
43 * 3. Neither the name of the University nor the names of its contributors
44 * may be used to endorse or promote products derived from this software
45 * without specific prior written permission.
47 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
48 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
49 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
50 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
51 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
52 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
53 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
54 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
55 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
56 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
64 #if defined(__OpenBSD__) || defined(__NetBSD__)
65 #undef HAVE_SYSCTLBYNAME /* force HAVE_LIBKVM_NLIST path */
68 #if !KERNEL_LINUX && !HAVE_SYSCTLBYNAME && !HAVE_LIBKVM_NLIST && !KERNEL_AIX
69 # error "No applicable input method."
73 # include <asm/types.h>
74 /* sys/socket.h is necessary to compile when using netlink on older systems. */
75 # include <sys/socket.h>
76 # include <linux/netlink.h>
77 # include <linux/inet_diag.h>
78 # include <sys/socket.h>
79 # include <arpa/inet.h>
80 /* #endif KERNEL_LINUX */
82 #elif HAVE_SYSCTLBYNAME
83 # include <sys/socketvar.h>
84 # include <sys/sysctl.h>
86 /* Some includes needed for compiling on FreeBSD */
89 # include <sys/types.h>
92 # include <sys/socket.h>
98 # include <net/route.h>
99 # include <netinet/in.h>
100 # include <netinet/in_systm.h>
101 # include <netinet/ip.h>
102 # include <netinet/ip6.h>
103 # include <netinet/in_pcb.h>
104 # include <netinet/ip_var.h>
105 # include <netinet/tcp.h>
106 # include <netinet/tcpip.h>
107 # include <netinet/tcp_seq.h>
108 # include <netinet/tcp_var.h>
109 /* #endif HAVE_SYSCTLBYNAME */
111 /* This is for OpenBSD and NetBSD. */
112 #elif HAVE_LIBKVM_NLIST
113 # include <sys/queue.h>
114 # include <sys/socket.h>
115 # include <net/route.h>
116 # include <netinet/in.h>
117 # include <netinet/in_systm.h>
118 # include <netinet/ip.h>
119 # include <netinet/ip_var.h>
120 # include <netinet/in_pcb.h>
121 # include <netinet/tcp.h>
122 # include <netinet/tcp_timer.h>
123 # include <netinet/tcp_var.h>
125 # include <arpa/inet.h>
126 # if !defined(HAVE_BSD_NLIST_H) || !HAVE_BSD_NLIST_H
128 # else /* HAVE_BSD_NLIST_H */
129 # include <bsd/nlist.h>
132 /* #endif HAVE_LIBKVM_NLIST */
135 # include <arpa/inet.h>
136 # include <sys/socketvar.h>
137 #endif /* KERNEL_AIX */
142 struct inet_diag_req r;
145 static const char *tcp_state[] =
161 # define TCP_STATE_LISTEN 10
162 # define TCP_STATE_MIN 1
163 # define TCP_STATE_MAX 11
164 /* #endif KERNEL_LINUX */
166 #elif HAVE_SYSCTLBYNAME
167 static const char *tcp_state[] =
182 # define TCP_STATE_LISTEN 1
183 # define TCP_STATE_MIN 0
184 # define TCP_STATE_MAX 10
185 /* #endif HAVE_SYSCTLBYNAME */
187 #elif HAVE_LIBKVM_NLIST
188 static const char *tcp_state[] =
204 static u_long inpcbtable_off = 0;
205 struct inpcbtable *inpcbtable_ptr = NULL;
207 # define TCP_STATE_LISTEN 1
208 # define TCP_STATE_MIN 1
209 # define TCP_STATE_MAX 10
210 /* #endif HAVE_LIBKVM_NLIST */
213 static const char *tcp_state[] =
228 # define TCP_STATE_LISTEN 1
229 # define TCP_STATE_MIN 0
230 # define TCP_STATE_MAX 10
232 struct netinfo_conn {
236 struct in6_addr dstaddr;
239 struct in6_addr srcaddr;
240 uint32_t unknow4[36];
245 struct netinfo_header {
250 # define NETINFO_TCP 3
251 extern int netinfo (int proto, void *data, int *size, int n);
252 #endif /* KERNEL_AIX */
254 #define PORT_COLLECT_LOCAL 0x01
255 #define PORT_COLLECT_REMOTE 0x02
256 #define PORT_IS_LISTENING 0x04
258 typedef struct port_entry_s
262 uint32_t count_local[TCP_STATE_MAX + 1];
263 uint32_t count_remote[TCP_STATE_MAX + 1];
264 struct port_entry_s *next;
267 static const char *config_keys[] =
273 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
275 static int port_collect_listening = 0;
276 static int port_collect_total = 1;
277 static port_entry_t *port_list_head = NULL;
278 static uint32_t count_total[TCP_STATE_MAX + 1];
281 static uint32_t sequence_number = 0;
288 } linux_source = SRC_DUNNO;
291 static void connt_prepare_vl (value_list_t *vl, value_t *values)
295 sstrncpy (vl->host, hostname_g, sizeof (vl->host));
296 sstrncpy (vl->plugin, "tcpconns", sizeof (vl->plugin));
297 sstrncpy (vl->type, "tcp_connections", sizeof (vl->type));
300 static void conn_submit_port_entry (port_entry_t *pe)
303 value_list_t vl = VALUE_LIST_INIT;
306 connt_prepare_vl (&vl, values);
308 if (((port_collect_listening != 0) && (pe->flags & PORT_IS_LISTENING))
309 || (pe->flags & PORT_COLLECT_LOCAL))
311 ssnprintf (vl.plugin_instance, sizeof (vl.plugin_instance),
312 "%"PRIu16"-local", pe->port);
314 for (i = 1; i <= TCP_STATE_MAX; i++)
316 vl.values[0].gauge = pe->count_local[i];
318 sstrncpy (vl.type_instance, tcp_state[i], sizeof (vl.type_instance));
320 plugin_dispatch_values (&vl);
324 if (pe->flags & PORT_COLLECT_REMOTE)
326 ssnprintf (vl.plugin_instance, sizeof (vl.plugin_instance),
327 "%"PRIu16"-remote", pe->port);
329 for (i = 1; i <= TCP_STATE_MAX; i++)
331 vl.values[0].gauge = pe->count_remote[i];
333 sstrncpy (vl.type_instance, tcp_state[i], sizeof (vl.type_instance));
335 plugin_dispatch_values (&vl);
338 } /* void conn_submit */
340 static void conn_submit_port_total (void)
343 value_list_t vl = VALUE_LIST_INIT;
346 connt_prepare_vl (&vl, values);
348 sstrncpy (vl.plugin, "all", sizeof (vl.plugin));
350 for (i = 1; i <= TCP_STATE_MAX; i++)
352 vl.values[0].gauge = count_total[i];
354 sstrncpy (vl.type_instance, tcp_state[i], sizeof (vl.type_instance));
356 plugin_dispatch_values (&vl);
360 static void conn_submit_all (void)
364 if (port_collect_total)
365 conn_submit_port_total ();
367 for (pe = port_list_head; pe != NULL; pe = pe->next)
368 conn_submit_port_entry (pe);
369 } /* void conn_submit_all */
371 static port_entry_t *conn_get_port_entry (uint16_t port, int create)
375 ret = port_list_head;
378 if (ret->port == port)
383 if ((ret == NULL) && (create != 0))
385 ret = (port_entry_t *) malloc (sizeof (port_entry_t));
388 memset (ret, '\0', sizeof (port_entry_t));
391 ret->next = port_list_head;
392 port_list_head = ret;
396 } /* port_entry_t *conn_get_port_entry */
398 /* Removes ports that were added automatically due to the `ListeningPorts'
399 * setting but which are no longer listening. */
400 static void conn_reset_port_entry (void)
402 port_entry_t *prev = NULL;
403 port_entry_t *pe = port_list_head;
405 memset (&count_total, '\0', sizeof(count_total));
409 /* If this entry was created while reading the files (ant not when handling
410 * the configuration) remove it now. */
411 if ((pe->flags & (PORT_COLLECT_LOCAL
412 | PORT_COLLECT_REMOTE
413 | PORT_IS_LISTENING)) == 0)
415 port_entry_t *next = pe->next;
417 DEBUG ("tcpconns plugin: Removing temporary entry "
418 "for listening port %"PRIu16, pe->port);
421 port_list_head = next;
431 memset (pe->count_local, '\0', sizeof (pe->count_local));
432 memset (pe->count_remote, '\0', sizeof (pe->count_remote));
433 pe->flags &= ~PORT_IS_LISTENING;
437 } /* void conn_reset_port_entry */
439 static int conn_handle_ports (uint16_t port_local, uint16_t port_remote, uint8_t state)
441 port_entry_t *pe = NULL;
443 if ((state > TCP_STATE_MAX)
444 #if TCP_STATE_MIN > 0
445 || (state < TCP_STATE_MIN)
449 NOTICE ("tcpconns plugin: Ignoring connection with "
450 "unknown state 0x%02"PRIx8".", state);
454 count_total[state]++;
456 /* Listening sockets */
457 if ((state == TCP_STATE_LISTEN) && (port_collect_listening != 0))
459 pe = conn_get_port_entry (port_local, 1 /* create */);
461 pe->flags |= PORT_IS_LISTENING;
464 DEBUG ("tcpconns plugin: Connection %"PRIu16" <-> %"PRIu16" (%s)",
465 port_local, port_remote, tcp_state[state]);
467 pe = conn_get_port_entry (port_local, 0 /* no create */);
469 pe->count_local[state]++;
471 pe = conn_get_port_entry (port_remote, 0 /* no create */);
473 pe->count_remote[state]++;
476 } /* int conn_handle_ports */
479 /* Returns zero on success, less than zero on socket error and greater than
480 * zero on other errors. */
481 static int conn_read_netlink (void)
484 struct sockaddr_nl nladdr;
488 struct inet_diag_msg *r;
491 /* If this fails, it's likely a permission problem. We'll fall back to
492 * reading this information from files below. */
493 fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_INET_DIAG);
496 ERROR ("tcpconns plugin: conn_read_netlink: socket(AF_NETLINK, SOCK_RAW, "
497 "NETLINK_INET_DIAG) failed: %s",
498 sstrerror (errno, buf, sizeof (buf)));
502 memset(&nladdr, 0, sizeof(nladdr));
503 nladdr.nl_family = AF_NETLINK;
505 memset(&req, 0, sizeof(req));
506 req.nlh.nlmsg_len = sizeof(req);
507 req.nlh.nlmsg_type = TCPDIAG_GETSOCK;
508 /* NLM_F_ROOT: return the complete table instead of a single entry.
509 * NLM_F_MATCH: return all entries matching criteria (not implemented)
510 * NLM_F_REQUEST: must be set on all request messages */
511 req.nlh.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST;
512 req.nlh.nlmsg_pid = 0;
513 /* The sequence_number is used to track our messages. Since netlink is not
514 * reliable, we don't want to end up with a corrupt or incomplete old
515 * message in case the system is/was out of memory. */
516 req.nlh.nlmsg_seq = ++sequence_number;
517 req.r.idiag_family = AF_INET;
518 req.r.idiag_states = 0xfff;
521 memset(&iov, 0, sizeof(iov));
523 iov.iov_len = sizeof(req);
525 memset(&msg, 0, sizeof(msg));
526 msg.msg_name = (void*)&nladdr;
527 msg.msg_namelen = sizeof(nladdr);
531 if (sendmsg (fd, &msg, 0) < 0)
533 ERROR ("tcpconns plugin: conn_read_netlink: sendmsg(2) failed: %s",
534 sstrerror (errno, buf, sizeof (buf)));
540 iov.iov_len = sizeof(buf);
547 memset(&msg, 0, sizeof(msg));
548 msg.msg_name = (void*)&nladdr;
549 msg.msg_namelen = sizeof(nladdr);
553 status = recvmsg(fd, (void *) &msg, /* flags = */ 0);
556 if ((errno == EINTR) || (errno == EAGAIN))
559 ERROR ("tcpconns plugin: conn_read_netlink: recvmsg(2) failed: %s",
560 sstrerror (errno, buf, sizeof (buf)));
564 else if (status == 0)
567 DEBUG ("tcpconns plugin: conn_read_netlink: Unexpected zero-sized "
568 "reply from netlink socket.");
572 h = (struct nlmsghdr*)buf;
573 while (NLMSG_OK(h, status))
575 if (h->nlmsg_seq != sequence_number)
577 h = NLMSG_NEXT(h, status);
581 if (h->nlmsg_type == NLMSG_DONE)
586 else if (h->nlmsg_type == NLMSG_ERROR)
588 struct nlmsgerr *msg_error;
590 msg_error = NLMSG_DATA(h);
591 WARNING ("tcpconns plugin: conn_read_netlink: Received error %i.",
600 /* This code does not (need to) distinguish between IPv4 and IPv6. */
601 conn_handle_ports (ntohs(r->id.idiag_sport),
602 ntohs(r->id.idiag_dport),
605 h = NLMSG_NEXT(h, status);
606 } /* while (NLMSG_OK) */
609 /* Not reached because the while() loop above handles the exit condition. */
611 } /* int conn_read_netlink */
613 static int conn_handle_line (char *buffer)
620 char *port_local_str;
621 char *port_remote_str;
623 uint16_t port_remote;
627 int buffer_len = strlen (buffer);
629 while ((buffer_len > 0) && (buffer[buffer_len - 1] < 32))
630 buffer[--buffer_len] = '\0';
634 fields_len = strsplit (buffer, fields, STATIC_ARRAY_SIZE (fields));
637 DEBUG ("tcpconns plugin: Got %i fields, expected at least 12.", fields_len);
641 port_local_str = strchr (fields[1], ':');
642 port_remote_str = strchr (fields[2], ':');
644 if ((port_local_str == NULL) || (port_remote_str == NULL))
648 if ((*port_local_str == '\0') || (*port_remote_str == '\0'))
652 port_local = (uint16_t) strtol (port_local_str, &endptr, 16);
653 if ((endptr == NULL) || (*endptr != '\0'))
657 port_remote = (uint16_t) strtol (port_remote_str, &endptr, 16);
658 if ((endptr == NULL) || (*endptr != '\0'))
662 state = (uint8_t) strtol (fields[3], &endptr, 16);
663 if ((endptr == NULL) || (*endptr != '\0'))
666 return (conn_handle_ports (port_local, port_remote, state));
667 } /* int conn_handle_line */
669 static int conn_read_file (const char *file)
674 fh = fopen (file, "r");
678 while (fgets (buffer, sizeof (buffer), fh) != NULL)
680 conn_handle_line (buffer);
681 } /* while (fgets) */
686 } /* int conn_read_file */
687 /* #endif KERNEL_LINUX */
689 #elif HAVE_SYSCTLBYNAME
690 /* #endif HAVE_SYSCTLBYNAME */
692 #elif HAVE_LIBKVM_NLIST
693 #endif /* HAVE_LIBKVM_NLIST */
695 static int conn_config (const char *key, const char *value)
697 if (strcasecmp (key, "ListeningPorts") == 0)
700 port_collect_listening = 1;
702 port_collect_listening = 0;
704 else if ((strcasecmp (key, "LocalPort") == 0)
705 || (strcasecmp (key, "RemotePort") == 0))
708 int port = atoi (value);
710 if ((port < 1) || (port > 65535))
712 ERROR ("tcpconns plugin: Invalid port: %i", port);
716 pe = conn_get_port_entry ((uint16_t) port, 1 /* create */);
719 ERROR ("tcpconns plugin: conn_get_port_entry failed.");
723 if (strcasecmp (key, "LocalPort") == 0)
724 pe->flags |= PORT_COLLECT_LOCAL;
726 pe->flags |= PORT_COLLECT_REMOTE;
734 } /* int conn_config */
737 static int conn_init (void)
739 if (port_list_head == NULL)
740 port_collect_listening = 1;
743 } /* int conn_init */
745 static int conn_read (void)
749 conn_reset_port_entry ();
751 if (linux_source == SRC_NETLINK)
753 status = conn_read_netlink ();
755 else if (linux_source == SRC_PROC)
759 if (conn_read_file ("/proc/net/tcp") != 0)
761 if (conn_read_file ("/proc/net/tcp6") != 0)
769 else /* if (linux_source == SRC_DUNNO) */
771 /* Try to use netlink for getting this data, it is _much_ faster on systems
772 * with a large amount of connections. */
773 status = conn_read_netlink ();
776 INFO ("tcpconns plugin: Reading from netlink succeeded. "
777 "Will use the netlink method from now on.");
778 linux_source = SRC_NETLINK;
782 INFO ("tcpconns plugin: Reading from netlink failed. "
783 "Will read from /proc from now on.");
784 linux_source = SRC_PROC;
786 /* return success here to avoid the "plugin failed" message. */
797 } /* int conn_read */
798 /* #endif KERNEL_LINUX */
800 #elif HAVE_SYSCTLBYNAME
801 static int conn_read (void)
807 struct xinpgen *in_orig;
808 struct xinpgen *in_ptr;
810 conn_reset_port_entry ();
813 status = sysctlbyname ("net.inet.tcp.pcblist", NULL, &buffer_len, 0, 0);
816 ERROR ("tcpconns plugin: sysctlbyname failed.");
820 buffer = (char *) malloc (buffer_len);
823 ERROR ("tcpconns plugin: malloc failed.");
827 status = sysctlbyname ("net.inet.tcp.pcblist", buffer, &buffer_len, 0, 0);
830 ERROR ("tcpconns plugin: sysctlbyname failed.");
835 if (buffer_len <= sizeof (struct xinpgen))
837 ERROR ("tcpconns plugin: (buffer_len <= sizeof (struct xinpgen))");
842 in_orig = (struct xinpgen *) buffer;
843 for (in_ptr = (struct xinpgen *) (((char *) in_orig) + in_orig->xig_len);
844 in_ptr->xig_len > sizeof (struct xinpgen);
845 in_ptr = (struct xinpgen *) (((char *) in_ptr) + in_ptr->xig_len))
847 struct tcpcb *tp = &((struct xtcpcb *) in_ptr)->xt_tp;
848 struct inpcb *inp = &((struct xtcpcb *) in_ptr)->xt_inp;
849 struct xsocket *so = &((struct xtcpcb *) in_ptr)->xt_socket;
851 /* Ignore non-TCP sockets */
852 if (so->xso_protocol != IPPROTO_TCP)
855 /* Ignore PCBs which were freed during copyout. */
856 if (inp->inp_gencnt > in_orig->xig_gen)
859 if (((inp->inp_vflag & INP_IPV4) == 0)
860 && ((inp->inp_vflag & INP_IPV6) == 0))
863 conn_handle_ports (ntohs (inp->inp_lport), ntohs (inp->inp_fport),
874 } /* int conn_read */
875 /* #endif HAVE_SYSCTLBYNAME */
877 #elif HAVE_LIBKVM_NLIST
878 static int kread (u_long addr, void *buf, int size)
882 status = kvm_read (kvmd, addr, buf, size);
885 ERROR ("tcpconns plugin: kvm_read failed (got %i, expected %i): %s\n",
886 status, size, kvm_geterr (kvmd));
892 static int conn_init (void)
894 char buf[_POSIX2_LINE_MAX];
903 kvmd = kvm_openfiles (NULL, NULL, NULL, O_RDONLY, buf);
906 ERROR ("tcpconns plugin: kvm_openfiles failed: %s", buf);
910 status = kvm_nlist (kvmd, nl);
913 ERROR ("tcpconns plugin: kvm_nlist failed with status %i.", status);
917 if (nl[N_TCBTABLE].n_type == 0)
919 ERROR ("tcpconns plugin: Error looking up kernel's namelist: "
920 "N_TCBTABLE is invalid.");
924 inpcbtable_off = (u_long) nl[N_TCBTABLE].n_value;
925 inpcbtable_ptr = (struct inpcbtable *) nl[N_TCBTABLE].n_value;
928 } /* int conn_init */
930 static int conn_read (void)
932 struct inpcbtable table;
939 conn_reset_port_entry ();
941 /* Read the pcbtable from the kernel */
942 status = kread (inpcbtable_off, &table, sizeof (table));
946 /* Get the `head' pcb */
947 head = (struct inpcb *) &(inpcbtable_ptr->inpt_queue);
948 /* Get the first pcb */
949 next = (struct inpcb *)CIRCLEQ_FIRST (&table.inpt_queue);
953 /* Read the pcb pointed to by `next' into `inpcb' */
954 kread ((u_long) next, &inpcb, sizeof (inpcb));
957 next = (struct inpcb *)CIRCLEQ_NEXT (&inpcb, inp_queue);
959 /* Ignore sockets, that are not connected. */
961 if (inpcb.inp_af == AF_INET6)
962 continue; /* XXX see netbsd/src/usr.bin/netstat/inet6.c */
964 if (!(inpcb.inp_flags & INP_IPV6)
965 && (inet_lnaof(inpcb.inp_laddr) == INADDR_ANY))
967 if ((inpcb.inp_flags & INP_IPV6)
968 && IN6_IS_ADDR_UNSPECIFIED (&inpcb.inp_laddr6))
972 kread ((u_long) inpcb.inp_ppcb, &tcpcb, sizeof (tcpcb));
973 conn_handle_ports (ntohs(inpcb.inp_lport), ntohs(inpcb.inp_fport), tcpcb.t_state);
974 } /* while (next != head) */
980 /* #endif HAVE_LIBKVM_NLIST */
984 static int conn_read (void)
990 struct netinfo_header *header;
991 struct netinfo_conn *conn;
993 conn_reset_port_entry ();
995 size = netinfo(NETINFO_TCP, 0, 0, 0);
998 ERROR ("tcpconns plugin: netinfo failed return: %i", size);
1005 if ((size - sizeof (struct netinfo_header)) % sizeof (struct netinfo_conn))
1007 ERROR ("tcpconns plugin: invalid buffer size");
1011 data = malloc(size);
1014 ERROR ("tcpconns plugin: malloc failed");
1018 if (netinfo(NETINFO_TCP, data, &size, 0) < 0)
1020 ERROR ("tcpconns plugin: netinfo failed");
1025 header = (struct netinfo_header *)data;
1026 nconn = header->size;
1027 conn = (struct netinfo_conn *)(data + sizeof(struct netinfo_header));
1029 for (i=0; i < nconn; conn++, i++)
1031 conn_handle_ports (conn->srcport, conn->dstport, conn->tcp_state);
1040 #endif /* KERNEL_AIX */
1042 void module_register (void)
1044 plugin_register_config ("tcpconns", conn_config,
1045 config_keys, config_keys_num);
1047 plugin_register_init ("tcpconns", conn_init);
1048 #elif HAVE_SYSCTLBYNAME
1049 /* no initialization */
1050 #elif HAVE_LIBKVM_NLIST
1051 plugin_register_init ("tcpconns", conn_init);
1053 /* no initialization */
1055 plugin_register_read ("tcpconns", conn_read);
1056 } /* void module_register */
1059 * vim: set shiftwidth=2 softtabstop=2 tabstop=8 fdm=marker :