Add an -L option to ignore loopback Internet sockets.
MFC after: 2 weeks
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83a17b90eb
commit
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=179115
@ -27,7 +27,7 @@
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.\"
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.\" $FreeBSD$
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.\"
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.Dd November 11, 2006
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.Dd May 18, 2008
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.Dt SOCKSTAT 1
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.Os
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.Sh NAME
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@ -35,7 +35,7 @@
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.Nd list open sockets
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.Sh SYNOPSIS
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.Nm
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.Op Fl 46clu
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.Op Fl 46cLlu
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.Op Fl p Ar ports
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.Op Fl P Ar protocols
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.Sh DESCRIPTION
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@ -57,6 +57,12 @@ Show
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(IPv6) sockets.
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.It Fl c
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Show connected sockets.
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.It Fl L
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Only show Internet sockets if the local or foreign addresses are not
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in the loopback network prefix
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.Li 127.0.0.0/8 ,
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or do not contain the IPv6 loopback address
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.Li ::1 .
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.It Fl l
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Show listening sockets.
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.It Fl p Ar ports
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@ -62,6 +62,7 @@ __FBSDID("$FreeBSD$");
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static int opt_4; /* Show IPv4 sockets */
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static int opt_6; /* Show IPv6 sockets */
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static int opt_c; /* Show connected sockets */
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static int opt_L; /* Don't show IPv4 or IPv6 loopback sockets */
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static int opt_l; /* Show listening sockets */
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static int opt_u; /* Show Unix domain sockets */
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static int opt_v; /* Verbose mode */
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@ -342,10 +343,21 @@ gather_inet(int proto)
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if ((inp->inp_fport == 0 && !opt_l) ||
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(inp->inp_fport != 0 && !opt_c))
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continue;
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#define __IN_IS_ADDR_LOOPBACK(pina) \
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((ntohl((pina)->s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET)
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if (opt_L &&
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(__IN_IS_ADDR_LOOPBACK(&inp->inp_faddr) ||
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__IN_IS_ADDR_LOOPBACK(&inp->inp_laddr)))
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continue;
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#undef __IN_IS_ADDR_LOOPBACK
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} else if (inp->inp_vflag & INP_IPV6) {
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if ((inp->in6p_fport == 0 && !opt_l) ||
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(inp->in6p_fport != 0 && !opt_c))
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continue;
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if (opt_L &&
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(IN6_IS_ADDR_LOOPBACK(&inp->in6p_faddr) ||
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IN6_IS_ADDR_LOOPBACK(&inp->in6p_laddr)))
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continue;
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} else {
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if (opt_v)
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warnx("invalid vflag 0x%x", inp->inp_vflag);
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@ -679,7 +691,7 @@ main(int argc, char *argv[])
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int protos_defined = -1;
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int o, i;
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while ((o = getopt(argc, argv, "46clp:P:uv")) != -1)
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while ((o = getopt(argc, argv, "46cLlp:P:uv")) != -1)
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switch (o) {
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case '4':
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opt_4 = 1;
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@ -690,6 +702,9 @@ main(int argc, char *argv[])
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case 'c':
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opt_c = 1;
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break;
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case 'L':
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opt_L = 1;
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break;
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case 'l':
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opt_l = 1;
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break;
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