/usr.bin/netstat/main.c
https://bitbucket.org/freebsd/freebsd-head/ · C · 825 lines · 721 code · 42 blank · 62 comment · 168 complexity · b033237761b5407ec77dbb876278f8b8 MD5 · raw file
- /*-
- * Copyright (c) 1983, 1988, 1993
- * Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
- #ifndef lint
- char const copyright[] =
- "@(#) Copyright (c) 1983, 1988, 1993\n\
- Regents of the University of California. All rights reserved.\n";
- #endif /* not lint */
- #if 0
- #ifndef lint
- static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 3/1/94";
- #endif /* not lint */
- #endif
- #include <sys/cdefs.h>
- __FBSDID("$FreeBSD$");
- #include <sys/param.h>
- #include <sys/file.h>
- #include <sys/protosw.h>
- #include <sys/socket.h>
- #include <sys/socketvar.h>
- #include <netinet/in.h>
- #ifdef NETGRAPH
- #include <netgraph/ng_socket.h>
- #endif
- #include <ctype.h>
- #include <err.h>
- #include <errno.h>
- #include <kvm.h>
- #include <limits.h>
- #include <netdb.h>
- #include <nlist.h>
- #include <paths.h>
- #include <stdint.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <unistd.h>
- #include "netstat.h"
- static struct nlist nl[] = {
- #define N_IFNET 0
- { .n_name = "_ifnet" },
- #define N_RTSTAT 1
- { .n_name = "_rtstat" },
- #define N_RTREE 2
- { .n_name = "_rt_tables"},
- #define N_MRTSTAT 3
- { .n_name = "_mrtstat" },
- #define N_MFCHASHTBL 4
- { .n_name = "_mfchashtbl" },
- #define N_VIFTABLE 5
- { .n_name = "_viftable" },
- #define N_IPX 6
- { .n_name = "_ipxpcb_list"},
- #define N_IPXSTAT 7
- { .n_name = "_ipxstat"},
- #define N_SPXSTAT 8
- { .n_name = "_spx_istat"},
- #define N_DDPSTAT 9
- { .n_name = "_ddpstat"},
- #define N_DDPCB 10
- { .n_name = "_ddpcb"},
- #define N_NGSOCKS 11
- { .n_name = "_ngsocklist"},
- #define N_IP6STAT 12
- { .n_name = "_ip6stat" },
- #define N_ICMP6STAT 13
- { .n_name = "_icmp6stat" },
- #define N_IPSECSTAT 14
- { .n_name = "_ipsec4stat" },
- #define N_IPSEC6STAT 15
- { .n_name = "_ipsec6stat" },
- #define N_PIM6STAT 16
- { .n_name = "_pim6stat" },
- #define N_MRT6STAT 17
- { .n_name = "_mrt6stat" },
- #define N_MF6CTABLE 18
- { .n_name = "_mf6ctable" },
- #define N_MIF6TABLE 19
- { .n_name = "_mif6table" },
- #define N_PFKEYSTAT 20
- { .n_name = "_pfkeystat" },
- #define N_MBSTAT 21
- { .n_name = "_mbstat" },
- #define N_MBTYPES 22
- { .n_name = "_mbtypes" },
- #define N_NMBCLUSTERS 23
- { .n_name = "_nmbclusters" },
- #define N_NMBUFS 24
- { .n_name = "_nmbufs" },
- #define N_MBHI 25
- { .n_name = "_mbuf_hiwm" },
- #define N_CLHI 26
- { .n_name = "_clust_hiwm" },
- #define N_NCPUS 27
- { .n_name = "_smp_cpus" },
- #define N_PAGESZ 28
- { .n_name = "_pagesize" },
- #define N_MBPSTAT 29
- { .n_name = "_mb_statpcpu" },
- #define N_RTTRASH 30
- { .n_name = "_rttrash" },
- #define N_MBLO 31
- { .n_name = "_mbuf_lowm" },
- #define N_CLLO 32
- { .n_name = "_clust_lowm" },
- #define N_CARPSTAT 33
- { .n_name = "_carpstats" },
- #define N_PFSYNCSTAT 34
- { .n_name = "_pfsyncstats" },
- #define N_AHSTAT 35
- { .n_name = "_ahstat" },
- #define N_ESPSTAT 36
- { .n_name = "_espstat" },
- #define N_IPCOMPSTAT 37
- { .n_name = "_ipcompstat" },
- #define N_TCPSTAT 38
- { .n_name = "_tcpstat" },
- #define N_UDPSTAT 39
- { .n_name = "_udpstat" },
- #define N_IPSTAT 40
- { .n_name = "_ipstat" },
- #define N_ICMPSTAT 41
- { .n_name = "_icmpstat" },
- #define N_IGMPSTAT 42
- { .n_name = "_igmpstat" },
- #define N_PIMSTAT 43
- { .n_name = "_pimstat" },
- #define N_TCBINFO 44
- { .n_name = "_tcbinfo" },
- #define N_UDBINFO 45
- { .n_name = "_udbinfo" },
- #define N_DIVCBINFO 46
- { .n_name = "_divcbinfo" },
- #define N_RIPCBINFO 47
- { .n_name = "_ripcbinfo" },
- #define N_UNP_COUNT 48
- { .n_name = "_unp_count" },
- #define N_UNP_GENCNT 49
- { .n_name = "_unp_gencnt" },
- #define N_UNP_DHEAD 50
- { .n_name = "_unp_dhead" },
- #define N_UNP_SHEAD 51
- { .n_name = "_unp_shead" },
- #define N_RIP6STAT 52
- { .n_name = "_rip6stat" },
- #define N_SCTPSTAT 53
- { .n_name = "_sctpstat" },
- #define N_MFCTABLESIZE 54
- { .n_name = "_mfctablesize" },
- #define N_ARPSTAT 55
- { .n_name = "_arpstat" },
- #define N_UNP_SPHEAD 56
- { .n_name = "unp_sphead" },
- { .n_name = NULL },
- };
- struct protox {
- int pr_index; /* index into nlist of cb head */
- int pr_sindex; /* index into nlist of stat block */
- u_char pr_wanted; /* 1 if wanted, 0 otherwise */
- void (*pr_cblocks)(u_long, const char *, int, int);
- /* control blocks printing routine */
- void (*pr_stats)(u_long, const char *, int, int);
- /* statistics printing routine */
- void (*pr_istats)(char *); /* per/if statistics printing routine */
- const char *pr_name; /* well-known name */
- int pr_usesysctl; /* non-zero if we use sysctl, not kvm */
- int pr_protocol;
- } protox[] = {
- { N_TCBINFO, N_TCPSTAT, 1, protopr,
- tcp_stats, NULL, "tcp", 1, IPPROTO_TCP },
- { N_UDBINFO, N_UDPSTAT, 1, protopr,
- udp_stats, NULL, "udp", 1, IPPROTO_UDP },
- #ifdef SCTP
- { -1, N_SCTPSTAT, 1, sctp_protopr,
- sctp_stats, NULL, "sctp", 1, IPPROTO_SCTP },
- #endif
- #ifdef SDP
- { -1, -1, 1, protopr,
- NULL, NULL, "sdp", 1, IPPROTO_TCP },
- #endif
- { N_DIVCBINFO, -1, 1, protopr,
- NULL, NULL, "divert", 1, IPPROTO_DIVERT },
- { N_RIPCBINFO, N_IPSTAT, 1, protopr,
- ip_stats, NULL, "ip", 1, IPPROTO_RAW },
- { N_RIPCBINFO, N_ICMPSTAT, 1, protopr,
- icmp_stats, NULL, "icmp", 1, IPPROTO_ICMP },
- { N_RIPCBINFO, N_IGMPSTAT, 1, protopr,
- igmp_stats, NULL, "igmp", 1, IPPROTO_IGMP },
- #ifdef IPSEC
- { -1, N_IPSECSTAT, 1, NULL, /* keep as compat */
- ipsec_stats, NULL, "ipsec", 0, 0},
- { -1, N_AHSTAT, 1, NULL,
- ah_stats, NULL, "ah", 0, 0},
- { -1, N_ESPSTAT, 1, NULL,
- esp_stats, NULL, "esp", 0, 0},
- { -1, N_IPCOMPSTAT, 1, NULL,
- ipcomp_stats, NULL, "ipcomp", 0, 0},
- #endif
- { N_RIPCBINFO, N_PIMSTAT, 1, protopr,
- pim_stats, NULL, "pim", 1, IPPROTO_PIM },
- { -1, N_CARPSTAT, 1, NULL,
- carp_stats, NULL, "carp", 1, 0 },
- { -1, N_PFSYNCSTAT, 1, NULL,
- pfsync_stats, NULL, "pfsync", 1, 0 },
- { -1, N_ARPSTAT, 1, NULL,
- arp_stats, NULL, "arp", 1, 0 },
- { -1, -1, 0, NULL,
- NULL, NULL, NULL, 0, 0 }
- };
- #ifdef INET6
- struct protox ip6protox[] = {
- { N_TCBINFO, N_TCPSTAT, 1, protopr,
- tcp_stats, NULL, "tcp", 1, IPPROTO_TCP },
- { N_UDBINFO, N_UDPSTAT, 1, protopr,
- udp_stats, NULL, "udp", 1, IPPROTO_UDP },
- { N_RIPCBINFO, N_IP6STAT, 1, protopr,
- ip6_stats, ip6_ifstats, "ip6", 1, IPPROTO_RAW },
- { N_RIPCBINFO, N_ICMP6STAT, 1, protopr,
- icmp6_stats, icmp6_ifstats, "icmp6", 1, IPPROTO_ICMPV6 },
- #ifdef SDP
- { -1, -1, 1, protopr,
- NULL, NULL, "sdp", 1, IPPROTO_TCP },
- #endif
- #ifdef IPSEC
- { -1, N_IPSEC6STAT, 1, NULL,
- ipsec_stats, NULL, "ipsec6", 0, 0 },
- #endif
- #ifdef notyet
- { -1, N_PIM6STAT, 1, NULL,
- pim6_stats, NULL, "pim6", 1, 0 },
- #endif
- { -1, N_RIP6STAT, 1, NULL,
- rip6_stats, NULL, "rip6", 1, 0 },
- { -1, -1, 0, NULL,
- NULL, NULL, NULL, 0, 0 }
- };
- #endif /*INET6*/
- #ifdef IPSEC
- struct protox pfkeyprotox[] = {
- { -1, N_PFKEYSTAT, 1, NULL,
- pfkey_stats, NULL, "pfkey", 0, 0 },
- { -1, -1, 0, NULL,
- NULL, NULL, NULL, 0, 0 }
- };
- #endif
- struct protox atalkprotox[] = {
- { N_DDPCB, N_DDPSTAT, 1, atalkprotopr,
- ddp_stats, NULL, "ddp", 0, 0 },
- { -1, -1, 0, NULL,
- NULL, NULL, NULL, 0, 0 }
- };
- #ifdef NETGRAPH
- struct protox netgraphprotox[] = {
- { N_NGSOCKS, -1, 1, netgraphprotopr,
- NULL, NULL, "ctrl", 0, 0 },
- { N_NGSOCKS, -1, 1, netgraphprotopr,
- NULL, NULL, "data", 0, 0 },
- { -1, -1, 0, NULL,
- NULL, NULL, NULL, 0, 0 }
- };
- #endif
- #ifdef IPX
- struct protox ipxprotox[] = {
- { N_IPX, N_IPXSTAT, 1, ipxprotopr,
- ipx_stats, NULL, "ipx", 0, 0 },
- { N_IPX, N_SPXSTAT, 1, ipxprotopr,
- spx_stats, NULL, "spx", 0, 0 },
- { -1, -1, 0, NULL,
- NULL, NULL, 0, 0, 0 }
- };
- #endif
- struct protox *protoprotox[] = {
- protox,
- #ifdef INET6
- ip6protox,
- #endif
- #ifdef IPSEC
- pfkeyprotox,
- #endif
- #ifdef IPX
- ipxprotox,
- #endif
- atalkprotox, NULL };
- static void printproto(struct protox *, const char *);
- static void usage(void);
- static struct protox *name2protox(const char *);
- static struct protox *knownname(const char *);
- static kvm_t *kvmd;
- static char *nlistf = NULL, *memf = NULL;
- int Aflag; /* show addresses of protocol control block */
- int aflag; /* show all sockets (including servers) */
- int Bflag; /* show information about bpf consumers */
- int bflag; /* show i/f total bytes in/out */
- int dflag; /* show i/f dropped packets */
- int gflag; /* show group (multicast) routing or stats */
- int hflag; /* show counters in human readable format */
- int iflag; /* show interfaces */
- int Lflag; /* show size of listen queues */
- int mflag; /* show memory stats */
- int noutputs = 0; /* how much outputs before we exit */
- int numeric_addr; /* show addresses numerically */
- int numeric_port; /* show ports numerically */
- static int pflag; /* show given protocol */
- int Qflag; /* show netisr information */
- int rflag; /* show routing tables (or routing stats) */
- int sflag; /* show protocol statistics */
- int Wflag; /* wide display */
- int Tflag; /* TCP Information */
- int xflag; /* extra information, includes all socket buffer info */
- int zflag; /* zero stats */
- int interval; /* repeat interval for i/f stats */
- char *interface; /* desired i/f for stats, or NULL for all i/fs */
- int unit; /* unit number for above */
- int af; /* address family */
- int live; /* true if we are examining a live system */
- int
- main(int argc, char *argv[])
- {
- struct protox *tp = NULL; /* for printing cblocks & stats */
- int ch;
- af = AF_UNSPEC;
- while ((ch = getopt(argc, argv, "AaBbdf:ghI:iLlM:mN:np:Qq:rSTsuWw:xz"))
- != -1)
- switch(ch) {
- case 'A':
- Aflag = 1;
- break;
- case 'a':
- aflag = 1;
- break;
- case 'B':
- Bflag = 1;
- break;
- case 'b':
- bflag = 1;
- break;
- case 'd':
- dflag = 1;
- break;
- case 'f':
- if (strcmp(optarg, "ipx") == 0)
- af = AF_IPX;
- else if (strcmp(optarg, "inet") == 0)
- af = AF_INET;
- #ifdef INET6
- else if (strcmp(optarg, "inet6") == 0)
- af = AF_INET6;
- #endif
- #ifdef IPSEC
- else if (strcmp(optarg, "pfkey") == 0)
- af = PF_KEY;
- #endif
- else if (strcmp(optarg, "unix") == 0)
- af = AF_UNIX;
- else if (strcmp(optarg, "atalk") == 0)
- af = AF_APPLETALK;
- #ifdef NETGRAPH
- else if (strcmp(optarg, "ng") == 0
- || strcmp(optarg, "netgraph") == 0)
- af = AF_NETGRAPH;
- #endif
- else if (strcmp(optarg, "link") == 0)
- af = AF_LINK;
- else {
- errx(1, "%s: unknown address family", optarg);
- }
- break;
- case 'g':
- gflag = 1;
- break;
- case 'h':
- hflag = 1;
- break;
- case 'I': {
- char *cp;
- iflag = 1;
- for (cp = interface = optarg; isalpha(*cp); cp++)
- continue;
- unit = atoi(cp);
- break;
- }
- case 'i':
- iflag = 1;
- break;
- case 'L':
- Lflag = 1;
- break;
- case 'M':
- memf = optarg;
- break;
- case 'm':
- mflag = 1;
- break;
- case 'N':
- nlistf = optarg;
- break;
- case 'n':
- numeric_addr = numeric_port = 1;
- break;
- case 'p':
- if ((tp = name2protox(optarg)) == NULL) {
- errx(1,
- "%s: unknown or uninstrumented protocol",
- optarg);
- }
- pflag = 1;
- break;
- case 'Q':
- Qflag = 1;
- break;
- case 'q':
- noutputs = atoi(optarg);
- if (noutputs != 0)
- noutputs++;
- break;
- case 'r':
- rflag = 1;
- break;
- case 's':
- ++sflag;
- break;
- case 'S':
- numeric_addr = 1;
- break;
- case 'u':
- af = AF_UNIX;
- break;
- case 'W':
- case 'l':
- Wflag = 1;
- break;
- case 'w':
- interval = atoi(optarg);
- iflag = 1;
- break;
- case 'T':
- Tflag = 1;
- break;
- case 'x':
- xflag = 1;
- break;
- case 'z':
- zflag = 1;
- break;
- case '?':
- default:
- usage();
- }
- argv += optind;
- argc -= optind;
- #define BACKWARD_COMPATIBILITY
- #ifdef BACKWARD_COMPATIBILITY
- if (*argv) {
- if (isdigit(**argv)) {
- interval = atoi(*argv);
- if (interval <= 0)
- usage();
- ++argv;
- iflag = 1;
- }
- if (*argv) {
- nlistf = *argv;
- if (*++argv)
- memf = *argv;
- }
- }
- #endif
- /*
- * Discard setgid privileges if not the running kernel so that bad
- * guys can't print interesting stuff from kernel memory.
- */
- live = (nlistf == NULL && memf == NULL);
- if (!live)
- setgid(getgid());
- if (xflag && Tflag)
- errx(1, "-x and -T are incompatible, pick one.");
- if (Bflag) {
- if (!live)
- usage();
- bpf_stats(interface);
- exit(0);
- }
- if (mflag) {
- if (!live) {
- if (kread(0, NULL, 0) == 0)
- mbpr(kvmd, nl[N_MBSTAT].n_value);
- } else
- mbpr(NULL, 0);
- exit(0);
- }
- if (Qflag) {
- if (!live) {
- if (kread(0, NULL, 0) == 0)
- netisr_stats(kvmd);
- } else
- netisr_stats(NULL);
- exit(0);
- }
- #if 0
- /*
- * Keep file descriptors open to avoid overhead
- * of open/close on each call to get* routines.
- */
- sethostent(1);
- setnetent(1);
- #else
- /*
- * This does not make sense any more with DNS being default over
- * the files. Doing a setXXXXent(1) causes a tcp connection to be
- * used for the queries, which is slower.
- */
- #endif
- kread(0, NULL, 0);
- if (iflag && !sflag) {
- intpr(interval, nl[N_IFNET].n_value, NULL);
- exit(0);
- }
- if (rflag) {
- if (sflag)
- rt_stats(nl[N_RTSTAT].n_value, nl[N_RTTRASH].n_value);
- else
- routepr(nl[N_RTREE].n_value);
- exit(0);
- }
- if (gflag) {
- if (sflag) {
- if (af == AF_INET || af == AF_UNSPEC)
- mrt_stats(nl[N_MRTSTAT].n_value);
- #ifdef INET6
- if (af == AF_INET6 || af == AF_UNSPEC)
- mrt6_stats(nl[N_MRT6STAT].n_value);
- #endif
- } else {
- if (af == AF_INET || af == AF_UNSPEC)
- mroutepr(nl[N_MFCHASHTBL].n_value,
- nl[N_MFCTABLESIZE].n_value,
- nl[N_VIFTABLE].n_value);
- #ifdef INET6
- if (af == AF_INET6 || af == AF_UNSPEC)
- mroute6pr(nl[N_MF6CTABLE].n_value,
- nl[N_MIF6TABLE].n_value);
- #endif
- }
- exit(0);
- }
- if (tp) {
- printproto(tp, tp->pr_name);
- exit(0);
- }
- if (af == AF_INET || af == AF_UNSPEC)
- for (tp = protox; tp->pr_name; tp++)
- printproto(tp, tp->pr_name);
- #ifdef INET6
- if (af == AF_INET6 || af == AF_UNSPEC)
- for (tp = ip6protox; tp->pr_name; tp++)
- printproto(tp, tp->pr_name);
- #endif /*INET6*/
- #ifdef IPSEC
- if (af == PF_KEY || af == AF_UNSPEC)
- for (tp = pfkeyprotox; tp->pr_name; tp++)
- printproto(tp, tp->pr_name);
- #endif /*IPSEC*/
- #ifdef IPX
- if (af == AF_IPX || af == AF_UNSPEC) {
- for (tp = ipxprotox; tp->pr_name; tp++)
- printproto(tp, tp->pr_name);
- }
- #endif /* IPX */
- if (af == AF_APPLETALK || af == AF_UNSPEC)
- for (tp = atalkprotox; tp->pr_name; tp++)
- printproto(tp, tp->pr_name);
- #ifdef NETGRAPH
- if (af == AF_NETGRAPH || af == AF_UNSPEC)
- for (tp = netgraphprotox; tp->pr_name; tp++)
- printproto(tp, tp->pr_name);
- #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);
- exit(0);
- }
- /*
- * 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(tp, name)
- struct protox *tp;
- const char *name;
- {
- void (*pr)(u_long, const char *, int, int);
- u_long off;
- if (sflag) {
- if (iflag) {
- if (tp->pr_istats)
- intpr(interval, nl[N_IFNET].n_value,
- tp->pr_istats);
- else if (pflag)
- printf("%s: no per-interface stats routine\n",
- tp->pr_name);
- return;
- } else {
- pr = tp->pr_stats;
- if (!pr) {
- if (pflag)
- printf("%s: no stats routine\n",
- tp->pr_name);
- return;
- }
- if (tp->pr_usesysctl && live)
- off = 0;
- else if (tp->pr_sindex < 0) {
- if (pflag)
- printf(
- "%s: stats routine doesn't work on cores\n",
- tp->pr_name);
- return;
- } else
- off = nl[tp->pr_sindex].n_value;
- }
- } else {
- pr = tp->pr_cblocks;
- if (!pr) {
- if (pflag)
- printf("%s: no PCB routine\n", tp->pr_name);
- return;
- }
- if (tp->pr_usesysctl && live)
- off = 0;
- else if (tp->pr_index < 0) {
- if (pflag)
- printf(
- "%s: PCB routine doesn't work on cores\n",
- tp->pr_name);
- return;
- } else
- off = nl[tp->pr_index].n_value;
- }
- if (pr != NULL && (off || (live && tp->pr_usesysctl) ||
- af != AF_UNSPEC))
- (*pr)(off, name, af, tp->pr_protocol);
- }
- /*
- * Read kernel memory, return 0 on success.
- */
- int
- kread(u_long addr, void *buf, size_t size)
- {
- char errbuf[_POSIX2_LINE_MAX];
- if (kvmd == NULL) {
- kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
- setgid(getgid());
- if (kvmd != NULL) {
- if (kvm_nlist(kvmd, nl) < 0) {
- if (nlistf)
- errx(1, "%s: kvm_nlist: %s", nlistf,
- kvm_geterr(kvmd));
- else
- errx(1, "kvm_nlist: %s", kvm_geterr(kvmd));
- }
- if (nl[0].n_type == 0) {
- if (nlistf)
- errx(1, "%s: no namelist", nlistf);
- else
- errx(1, "no namelist");
- }
- } else {
- warnx("kvm not available: %s", errbuf);
- return(-1);
- }
- }
- if (!buf)
- return (0);
- if (kvm_read(kvmd, addr, buf, size) != (ssize_t)size) {
- warnx("%s", kvm_geterr(kvmd));
- return (-1);
- }
- 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)fprintf(stderr, "%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 [-AaLnSTWx] [-f protocol_family | -p protocol]\n"
- " [-M core] [-N system]",
- " netstat -i | -I interface [-abdhnW] [-f address_family]\n"
- " [-M core] [-N system]",
- " netstat -w wait [-I interface] [-d] [-M core] [-N system] [-q howmany]",
- " netstat -s [-s] [-z] [-f protocol_family | -p protocol]\n"
- " [-M core] [-N system]",
- " netstat -i | -I interface -s [-f protocol_family | -p protocol]\n"
- " [-M core] [-N system]",
- " netstat -m [-M core] [-N system]",
- " netstat -B [-I interface]",
- " netstat -r [-AanW] [-f address_family] [-M core] [-N system]",
- " netstat -rs [-s] [-M core] [-N system]",
- " netstat -g [-W] [-f address_family] [-M core] [-N system]",
- " netstat -gs [-s] [-f address_family] [-M core] [-N system]",
- " netstat -Q");
- exit(1);
- }