858 lines
19 KiB
C
858 lines
19 KiB
C
/*-
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* Copyright (c) 1983, 1988, 1993
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* Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char const copyright[] =
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"@(#) Copyright (c) 1983, 1988, 1993\n\
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Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#if 0
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#ifndef lint
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static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 3/1/94";
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#endif /* not lint */
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/file.h>
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#include <sys/protosw.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/sysctl.h>
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#include <netinet/in.h>
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#ifdef NETGRAPH
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#include <netgraph/ng_socket.h>
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#endif
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <kvm.h>
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#include <limits.h>
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#include <netdb.h>
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#include <nlist.h>
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#include <paths.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <string.h>
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#include <unistd.h>
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#include "netstat.h"
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#include "nl_defs.h"
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#include <libxo/xo.h>
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static struct protox {
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int pr_index; /* index into nlist of cb head */
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int pr_sindex; /* index into nlist of stat block */
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u_char pr_wanted; /* 1 if wanted, 0 otherwise */
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void (*pr_cblocks)(u_long, const char *, int, int);
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/* control blocks printing routine */
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void (*pr_stats)(u_long, const char *, int, int);
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/* statistics printing routine */
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void (*pr_istats)(char *); /* per/if statistics printing routine */
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const char *pr_name; /* well-known name */
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int pr_usesysctl; /* non-zero if we use sysctl, not kvm */
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int pr_protocol;
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} protox[] = {
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{ N_TCBINFO, N_TCPSTAT, 1, protopr,
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tcp_stats, NULL, "tcp", 1, IPPROTO_TCP },
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{ N_UDBINFO, N_UDPSTAT, 1, protopr,
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udp_stats, NULL, "udp", 1, IPPROTO_UDP },
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#ifdef SCTP
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{ -1, N_SCTPSTAT, 1, sctp_protopr,
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sctp_stats, NULL, "sctp", 1, IPPROTO_SCTP },
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#endif
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#ifdef SDP
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{ -1, -1, 1, protopr,
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NULL, NULL, "sdp", 1, IPPROTO_TCP },
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#endif
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{ N_DIVCBINFO, -1, 1, protopr,
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NULL, NULL, "divert", 1, IPPROTO_DIVERT },
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{ N_RIPCBINFO, N_IPSTAT, 1, protopr,
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ip_stats, NULL, "ip", 1, IPPROTO_RAW },
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{ N_RIPCBINFO, N_ICMPSTAT, 1, protopr,
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icmp_stats, NULL, "icmp", 1, IPPROTO_ICMP },
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{ N_RIPCBINFO, N_IGMPSTAT, 1, protopr,
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igmp_stats, NULL, "igmp", 1, IPPROTO_IGMP },
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#ifdef IPSEC
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{ -1, N_IPSEC4STAT, 1, NULL, /* keep as compat */
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ipsec_stats, NULL, "ipsec", 0, 0},
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{ -1, N_AHSTAT, 1, NULL,
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ah_stats, NULL, "ah", 0, 0},
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{ -1, N_ESPSTAT, 1, NULL,
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esp_stats, NULL, "esp", 0, 0},
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{ -1, N_IPCOMPSTAT, 1, NULL,
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ipcomp_stats, NULL, "ipcomp", 0, 0},
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#endif
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{ N_RIPCBINFO, N_PIMSTAT, 1, protopr,
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pim_stats, NULL, "pim", 1, IPPROTO_PIM },
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{ -1, N_CARPSTATS, 1, NULL,
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carp_stats, NULL, "carp", 1, 0 },
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#ifdef PF
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{ -1, N_PFSYNCSTATS, 1, NULL,
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pfsync_stats, NULL, "pfsync", 1, 0 },
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#endif
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{ -1, N_ARPSTAT, 1, NULL,
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arp_stats, NULL, "arp", 1, 0 },
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{ -1, -1, 0, NULL,
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NULL, NULL, NULL, 0, 0 }
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};
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#ifdef INET6
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static struct protox ip6protox[] = {
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{ N_TCBINFO, N_TCPSTAT, 1, protopr,
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tcp_stats, NULL, "tcp", 1, IPPROTO_TCP },
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{ N_UDBINFO, N_UDPSTAT, 1, protopr,
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udp_stats, NULL, "udp", 1, IPPROTO_UDP },
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{ N_RIPCBINFO, N_IP6STAT, 1, protopr,
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ip6_stats, ip6_ifstats, "ip6", 1, IPPROTO_RAW },
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{ N_RIPCBINFO, N_ICMP6STAT, 1, protopr,
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icmp6_stats, icmp6_ifstats, "icmp6", 1, IPPROTO_ICMPV6 },
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#ifdef SDP
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{ -1, -1, 1, protopr,
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NULL, NULL, "sdp", 1, IPPROTO_TCP },
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#endif
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#ifdef IPSEC
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{ -1, N_IPSEC6STAT, 1, NULL,
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ipsec_stats, NULL, "ipsec6", 0, 0 },
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#endif
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#ifdef notyet
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{ -1, N_PIM6STAT, 1, NULL,
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pim6_stats, NULL, "pim6", 1, 0 },
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#endif
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{ -1, N_RIP6STAT, 1, NULL,
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rip6_stats, NULL, "rip6", 1, 0 },
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{ -1, -1, 0, NULL,
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NULL, NULL, NULL, 0, 0 }
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};
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#endif /*INET6*/
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#ifdef IPSEC
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static struct protox pfkeyprotox[] = {
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{ -1, N_PFKEYSTAT, 1, NULL,
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pfkey_stats, NULL, "pfkey", 0, 0 },
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{ -1, -1, 0, NULL,
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NULL, NULL, NULL, 0, 0 }
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};
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#endif
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#ifdef NETGRAPH
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static struct protox netgraphprotox[] = {
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{ N_NGSOCKLIST, -1, 1, netgraphprotopr,
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NULL, NULL, "ctrl", 0, 0 },
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{ N_NGSOCKLIST, -1, 1, netgraphprotopr,
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NULL, NULL, "data", 0, 0 },
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{ -1, -1, 0, NULL,
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NULL, NULL, NULL, 0, 0 }
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};
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#endif
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static struct protox *protoprotox[] = {
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protox,
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#ifdef INET6
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ip6protox,
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#endif
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#ifdef IPSEC
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pfkeyprotox,
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#endif
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NULL };
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static void printproto(struct protox *, const char *, bool *);
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static void usage(void);
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static struct protox *name2protox(const char *);
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static struct protox *knownname(const char *);
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static int kresolve_list(struct nlist *_nl);
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static kvm_t *kvmd;
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static char *nlistf = NULL, *memf = NULL;
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int Aflag; /* show addresses of protocol control block */
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int aflag; /* show all sockets (including servers) */
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static int Bflag; /* show information about bpf consumers */
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int bflag; /* show i/f total bytes in/out */
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int dflag; /* show i/f dropped packets */
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int gflag; /* show group (multicast) routing or stats */
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int hflag; /* show counters in human readable format */
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int iflag; /* show interfaces */
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int Lflag; /* show size of listen queues */
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int mflag; /* show memory stats */
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int noutputs = 0; /* how much outputs before we exit */
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int numeric_addr; /* show addresses numerically */
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int numeric_port; /* show ports numerically */
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static int pflag; /* show given protocol */
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static int Qflag; /* show netisr information */
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int rflag; /* show routing tables (or routing stats) */
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int Rflag; /* show flow / RSS statistics */
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int sflag; /* show protocol statistics */
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int Wflag; /* wide display */
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int Tflag; /* TCP Information */
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int xflag; /* extra information, includes all socket buffer info */
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int zflag; /* zero stats */
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int interval; /* repeat interval for i/f stats */
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char *interface; /* desired i/f for stats, or NULL for all i/fs */
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int unit; /* unit number for above */
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static int af; /* address family */
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int live; /* true if we are examining a live system */
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int
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main(int argc, char *argv[])
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{
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struct protox *tp = NULL; /* for printing cblocks & stats */
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int ch;
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int fib = -1;
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char *endptr;
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bool first = true;
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af = AF_UNSPEC;
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argc = xo_parse_args(argc, argv);
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if (argc < 0)
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exit(EXIT_FAILURE);
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while ((ch = getopt(argc, argv, "46AaBbdF:f:ghI:iLlM:mN:np:Qq:RrSTsuWw:xz"))
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!= -1)
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switch(ch) {
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case '4':
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#ifdef INET
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af = AF_INET;
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#else
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errx(1, "IPv4 support is not compiled in");
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#endif
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break;
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case '6':
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#ifdef INET6
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af = AF_INET6;
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#else
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errx(1, "IPv6 support is not compiled in");
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#endif
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break;
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case 'A':
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Aflag = 1;
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break;
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case 'a':
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aflag = 1;
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break;
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case 'B':
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Bflag = 1;
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break;
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case 'b':
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bflag = 1;
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break;
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case 'd':
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dflag = 1;
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break;
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case 'F':
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fib = strtol(optarg, &endptr, 0);
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if (*endptr != '\0' ||
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(fib == 0 && (errno == EINVAL || errno == ERANGE)))
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xo_errx(1, "%s: invalid fib", optarg);
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break;
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case 'f':
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if (strcmp(optarg, "inet") == 0)
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af = AF_INET;
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#ifdef INET6
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else if (strcmp(optarg, "inet6") == 0)
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af = AF_INET6;
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#endif
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#ifdef IPSEC
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else if (strcmp(optarg, "pfkey") == 0)
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af = PF_KEY;
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#endif
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else if (strcmp(optarg, "unix") == 0 ||
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strcmp(optarg, "local") == 0)
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af = AF_UNIX;
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#ifdef NETGRAPH
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else if (strcmp(optarg, "ng") == 0
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|| strcmp(optarg, "netgraph") == 0)
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af = AF_NETGRAPH;
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#endif
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else if (strcmp(optarg, "link") == 0)
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af = AF_LINK;
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else {
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xo_errx(1, "%s: unknown address family",
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optarg);
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}
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break;
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case 'g':
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gflag = 1;
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break;
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case 'h':
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hflag = 1;
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break;
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case 'I': {
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char *cp;
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iflag = 1;
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for (cp = interface = optarg; isalpha(*cp); cp++)
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continue;
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unit = atoi(cp);
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break;
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}
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case 'i':
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iflag = 1;
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break;
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case 'L':
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Lflag = 1;
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break;
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case 'M':
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memf = optarg;
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break;
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case 'm':
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mflag = 1;
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break;
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case 'N':
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nlistf = optarg;
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break;
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case 'n':
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numeric_addr = numeric_port = 1;
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break;
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case 'p':
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if ((tp = name2protox(optarg)) == NULL) {
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xo_errx(1, "%s: unknown or uninstrumented "
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"protocol", optarg);
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}
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pflag = 1;
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break;
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case 'Q':
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Qflag = 1;
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break;
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case 'q':
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noutputs = atoi(optarg);
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if (noutputs != 0)
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noutputs++;
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break;
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case 'r':
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rflag = 1;
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break;
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case 'R':
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Rflag = 1;
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break;
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case 's':
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++sflag;
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break;
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case 'S':
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numeric_addr = 1;
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break;
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case 'u':
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af = AF_UNIX;
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break;
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case 'W':
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case 'l':
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Wflag = 1;
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break;
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case 'w':
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interval = atoi(optarg);
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iflag = 1;
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break;
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case 'T':
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Tflag = 1;
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break;
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case 'x':
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xflag = 1;
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break;
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case 'z':
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zflag = 1;
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break;
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case '?':
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default:
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usage();
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}
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argv += optind;
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argc -= optind;
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#define BACKWARD_COMPATIBILITY
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#ifdef BACKWARD_COMPATIBILITY
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if (*argv) {
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if (isdigit(**argv)) {
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interval = atoi(*argv);
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if (interval <= 0)
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usage();
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++argv;
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iflag = 1;
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}
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if (*argv) {
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nlistf = *argv;
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if (*++argv)
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memf = *argv;
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}
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}
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#endif
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/*
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* Discard setgid privileges if not the running kernel so that bad
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* guys can't print interesting stuff from kernel memory.
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*/
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live = (nlistf == NULL && memf == NULL);
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if (!live) {
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if (setgid(getgid()) != 0)
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xo_err(-1, "setgid");
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}
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if (xflag && Tflag)
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xo_errx(1, "-x and -T are incompatible, pick one.");
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if (Bflag) {
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if (!live)
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usage();
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bpf_stats(interface);
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xo_finish();
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exit(0);
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}
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if (mflag) {
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if (!live) {
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if (kread(0, NULL, 0) == 0)
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mbpr(kvmd, nl[N_SFSTAT].n_value);
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} else
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mbpr(NULL, 0);
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xo_finish();
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exit(0);
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}
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if (Qflag) {
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if (!live) {
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if (kread(0, NULL, 0) == 0)
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netisr_stats();
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} else
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netisr_stats();
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xo_finish();
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exit(0);
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}
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#if 0
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/*
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* Keep file descriptors open to avoid overhead
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* of open/close on each call to get* routines.
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*/
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sethostent(1);
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setnetent(1);
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#else
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/*
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* This does not make sense any more with DNS being default over
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* the files. Doing a setXXXXent(1) causes a tcp connection to be
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* used for the queries, which is slower.
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*/
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#endif
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if (iflag && !sflag) {
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xo_open_container("statistics");
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intpr(NULL, af);
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xo_close_container("statistics");
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xo_finish();
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exit(0);
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}
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if (rflag) {
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xo_open_container("statistics");
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if (sflag) {
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rt_stats();
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flowtable_stats();
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} else
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routepr(fib, af);
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xo_close_container("statistics");
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xo_finish();
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exit(0);
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}
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if (gflag) {
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xo_open_container("statistics");
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if (sflag) {
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if (af == AF_INET || af == AF_UNSPEC)
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mrt_stats();
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#ifdef INET6
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if (af == AF_INET6 || af == AF_UNSPEC)
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mrt6_stats();
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#endif
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} else {
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if (af == AF_INET || af == AF_UNSPEC)
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mroutepr();
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#ifdef INET6
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if (af == AF_INET6 || af == AF_UNSPEC)
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mroute6pr();
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#endif
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}
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xo_close_container("statistics");
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xo_finish();
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exit(0);
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}
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/* Load all necessary kvm symbols */
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kresolve_list(nl);
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if (tp) {
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xo_open_container("statistics");
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printproto(tp, tp->pr_name, &first);
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if (!first)
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xo_close_list("socket");
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xo_close_container("statistics");
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xo_finish();
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exit(0);
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}
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xo_open_container("statistics");
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if (af == AF_INET || af == AF_UNSPEC)
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for (tp = protox; tp->pr_name; tp++)
|
|
printproto(tp, tp->pr_name, &first);
|
|
#ifdef INET6
|
|
if (af == AF_INET6 || af == AF_UNSPEC)
|
|
for (tp = ip6protox; tp->pr_name; tp++)
|
|
printproto(tp, tp->pr_name, &first);
|
|
#endif /*INET6*/
|
|
#ifdef IPSEC
|
|
if (af == PF_KEY || af == AF_UNSPEC)
|
|
for (tp = pfkeyprotox; tp->pr_name; tp++)
|
|
printproto(tp, tp->pr_name, &first);
|
|
#endif /*IPSEC*/
|
|
#ifdef NETGRAPH
|
|
if (af == AF_NETGRAPH || af == AF_UNSPEC)
|
|
for (tp = netgraphprotox; tp->pr_name; tp++)
|
|
printproto(tp, tp->pr_name, &first);
|
|
#endif /* NETGRAPH */
|
|
if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag)
|
|
unixpr(nl[N_UNP_COUNT].n_value, nl[N_UNP_GENCNT].n_value,
|
|
nl[N_UNP_DHEAD].n_value, nl[N_UNP_SHEAD].n_value,
|
|
nl[N_UNP_SPHEAD].n_value, &first);
|
|
|
|
if (!first)
|
|
xo_close_list("socket");
|
|
xo_close_container("statistics");
|
|
xo_finish();
|
|
exit(0);
|
|
}
|
|
|
|
int
|
|
fetch_stats(const char *sysctlname, u_long off, void *stats, size_t len,
|
|
int (*kreadfn)(u_long, void *, size_t))
|
|
{
|
|
int error;
|
|
|
|
if (live) {
|
|
memset(stats, 0, len);
|
|
if (zflag)
|
|
error = sysctlbyname(sysctlname, NULL, NULL, stats,
|
|
len);
|
|
else
|
|
error = sysctlbyname(sysctlname, stats, &len, NULL, 0);
|
|
if (error == -1 && errno != ENOENT)
|
|
xo_warn("sysctl %s", sysctlname);
|
|
} else {
|
|
if (off == 0)
|
|
return (1);
|
|
error = kreadfn(off, stats, len);
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Print out protocol statistics or control blocks (per sflag).
|
|
* If the interface was not specifically requested, and the symbol
|
|
* is not in the namelist, ignore this one.
|
|
*/
|
|
static void
|
|
printproto(struct protox *tp, const char *name, bool *first)
|
|
{
|
|
void (*pr)(u_long, const char *, int, int);
|
|
u_long off;
|
|
bool doingdblocks = false;
|
|
|
|
if (sflag) {
|
|
if (iflag) {
|
|
if (tp->pr_istats)
|
|
intpr(tp->pr_istats, af);
|
|
else if (pflag)
|
|
xo_message("%s: no per-interface stats routine",
|
|
tp->pr_name);
|
|
return;
|
|
} else {
|
|
pr = tp->pr_stats;
|
|
if (!pr) {
|
|
if (pflag)
|
|
xo_message("%s: no stats routine",
|
|
tp->pr_name);
|
|
return;
|
|
}
|
|
if (tp->pr_usesysctl && live)
|
|
off = 0;
|
|
else if (tp->pr_sindex < 0) {
|
|
if (pflag)
|
|
xo_message("%s: stats routine doesn't "
|
|
"work on cores", tp->pr_name);
|
|
return;
|
|
} else
|
|
off = nl[tp->pr_sindex].n_value;
|
|
}
|
|
} else {
|
|
doingdblocks = true;
|
|
pr = tp->pr_cblocks;
|
|
if (!pr) {
|
|
if (pflag)
|
|
xo_message("%s: no PCB routine", tp->pr_name);
|
|
return;
|
|
}
|
|
if (tp->pr_usesysctl && live)
|
|
off = 0;
|
|
else if (tp->pr_index < 0) {
|
|
if (pflag)
|
|
xo_message("%s: PCB routine doesn't work on "
|
|
"cores", tp->pr_name);
|
|
return;
|
|
} else
|
|
off = nl[tp->pr_index].n_value;
|
|
}
|
|
if (pr != NULL && (off || (live && tp->pr_usesysctl) ||
|
|
af != AF_UNSPEC)) {
|
|
if (doingdblocks && *first) {
|
|
xo_open_list("socket");
|
|
*first = false;
|
|
}
|
|
|
|
(*pr)(off, name, af, tp->pr_protocol);
|
|
}
|
|
}
|
|
|
|
static int
|
|
kvmd_init(void)
|
|
{
|
|
char errbuf[_POSIX2_LINE_MAX];
|
|
|
|
if (kvmd != NULL)
|
|
return (0);
|
|
|
|
kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
|
|
if (setgid(getgid()) != 0)
|
|
xo_err(-1, "setgid");
|
|
|
|
if (kvmd == NULL) {
|
|
xo_warnx("kvm not available: %s", errbuf);
|
|
return (-1);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Resolve symbol list, return 0 on success.
|
|
*/
|
|
static int
|
|
kresolve_list(struct nlist *_nl)
|
|
{
|
|
|
|
if ((kvmd == NULL) && (kvmd_init() != 0))
|
|
return (-1);
|
|
|
|
if (_nl[0].n_type != 0)
|
|
return (0);
|
|
|
|
if (kvm_nlist(kvmd, _nl) < 0) {
|
|
if (nlistf)
|
|
xo_errx(1, "%s: kvm_nlist: %s", nlistf,
|
|
kvm_geterr(kvmd));
|
|
else
|
|
xo_errx(1, "kvm_nlist: %s", kvm_geterr(kvmd));
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Wrapper of kvm_dpcpu_setcpu().
|
|
*/
|
|
void
|
|
kset_dpcpu(u_int cpuid)
|
|
{
|
|
|
|
if ((kvmd == NULL) && (kvmd_init() != 0))
|
|
xo_errx(-1, "%s: kvm is not available", __func__);
|
|
|
|
if (kvm_dpcpu_setcpu(kvmd, cpuid) < 0)
|
|
xo_errx(-1, "%s: kvm_dpcpu_setcpu(%u): %s", __func__,
|
|
cpuid, kvm_geterr(kvmd));
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Read kernel memory, return 0 on success.
|
|
*/
|
|
int
|
|
kread(u_long addr, void *buf, size_t size)
|
|
{
|
|
|
|
if (kvmd_init() < 0)
|
|
return (-1);
|
|
|
|
if (!buf)
|
|
return (0);
|
|
if (kvm_read(kvmd, addr, buf, size) != (ssize_t)size) {
|
|
xo_warnx("%s", kvm_geterr(kvmd));
|
|
return (-1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Read single counter(9).
|
|
*/
|
|
uint64_t
|
|
kread_counter(u_long addr)
|
|
{
|
|
|
|
if (kvmd_init() < 0)
|
|
return (-1);
|
|
|
|
return (kvm_counter_u64_fetch(kvmd, addr));
|
|
}
|
|
|
|
/*
|
|
* Read an array of N counters in kernel memory into array of N uint64_t's.
|
|
*/
|
|
int
|
|
kread_counters(u_long addr, void *buf, size_t size)
|
|
{
|
|
uint64_t *c;
|
|
u_long *counters;
|
|
size_t i, n;
|
|
|
|
if (kvmd_init() < 0)
|
|
return (-1);
|
|
|
|
if (size % sizeof(uint64_t) != 0) {
|
|
xo_warnx("kread_counters: invalid counter set size");
|
|
return (-1);
|
|
}
|
|
|
|
n = size / sizeof(uint64_t);
|
|
if ((counters = malloc(n * sizeof(u_long))) == NULL)
|
|
xo_err(-1, "malloc");
|
|
if (kread(addr, counters, n * sizeof(u_long)) < 0) {
|
|
free(counters);
|
|
return (-1);
|
|
}
|
|
|
|
c = buf;
|
|
for (i = 0; i < n; i++)
|
|
c[i] = kvm_counter_u64_fetch(kvmd, counters[i]);
|
|
|
|
free(counters);
|
|
return (0);
|
|
}
|
|
|
|
const char *
|
|
plural(uintmax_t n)
|
|
{
|
|
return (n != 1 ? "s" : "");
|
|
}
|
|
|
|
const char *
|
|
plurales(uintmax_t n)
|
|
{
|
|
return (n != 1 ? "es" : "");
|
|
}
|
|
|
|
const char *
|
|
pluralies(uintmax_t n)
|
|
{
|
|
return (n != 1 ? "ies" : "y");
|
|
}
|
|
|
|
/*
|
|
* Find the protox for the given "well-known" name.
|
|
*/
|
|
static struct protox *
|
|
knownname(const char *name)
|
|
{
|
|
struct protox **tpp, *tp;
|
|
|
|
for (tpp = protoprotox; *tpp; tpp++)
|
|
for (tp = *tpp; tp->pr_name; tp++)
|
|
if (strcmp(tp->pr_name, name) == 0)
|
|
return (tp);
|
|
return (NULL);
|
|
}
|
|
|
|
/*
|
|
* Find the protox corresponding to name.
|
|
*/
|
|
static struct protox *
|
|
name2protox(const char *name)
|
|
{
|
|
struct protox *tp;
|
|
char **alias; /* alias from p->aliases */
|
|
struct protoent *p;
|
|
|
|
/*
|
|
* Try to find the name in the list of "well-known" names. If that
|
|
* fails, check if name is an alias for an Internet protocol.
|
|
*/
|
|
if ((tp = knownname(name)) != NULL)
|
|
return (tp);
|
|
|
|
setprotoent(1); /* make protocol lookup cheaper */
|
|
while ((p = getprotoent()) != NULL) {
|
|
/* assert: name not same as p->name */
|
|
for (alias = p->p_aliases; *alias; alias++)
|
|
if (strcmp(name, *alias) == 0) {
|
|
endprotoent();
|
|
return (knownname(p->p_name));
|
|
}
|
|
}
|
|
endprotoent();
|
|
return (NULL);
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
(void)xo_error("%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
|
|
"usage: netstat [-46AaLnRSTWx] [-f protocol_family | -p protocol]\n"
|
|
" [-M core] [-N system]",
|
|
" netstat -i | -I interface [-46abdhnW] [-f address_family]\n"
|
|
" [-M core] [-N system]",
|
|
" netstat -w wait [-I interface] [-46d] [-M core] [-N system]\n"
|
|
" [-q howmany]",
|
|
" netstat -s [-46sz] [-f protocol_family | -p protocol]\n"
|
|
" [-M core] [-N system]",
|
|
" netstat -i | -I interface -s [-46s]\n"
|
|
" [-f protocol_family | -p protocol] [-M core] [-N system]",
|
|
" netstat -m [-M core] [-N system]",
|
|
" netstat -B [-z] [-I interface]",
|
|
" netstat -r [-46AnW] [-F fibnum] [-f address_family]\n"
|
|
" [-M core] [-N system]",
|
|
" netstat -rs [-s] [-M core] [-N system]",
|
|
" netstat -g [-46W] [-f address_family] [-M core] [-N system]",
|
|
" netstat -gs [-46s] [-f address_family] [-M core] [-N system]",
|
|
" netstat -Q");
|
|
xo_finish();
|
|
exit(1);
|
|
}
|