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sockstat: Also show sockets not associated with a file descriptor.
Sockets not associated with a file descriptor include TCP TIME_WAIT states and sockets created via the socket(9) API such as from rpc.lockd and the NFS client. PR: bin/164081 MFC after: 2 weeks No objection: des
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=230512
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@ -27,7 +27,7 @@
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.\"
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.\" $FreeBSD$
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.\"
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.Dd July 9, 2009
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.Dd January 24, 2012
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.Dt SOCKSTAT 1
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.Os
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.Sh NAME
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@ -137,19 +137,10 @@ The address the foreign end of the socket is bound to (see
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.Xr getpeername 2 ) .
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.El
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.Pp
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Note that TCP sockets in the
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.Dv AF_INET
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or
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.Dv AF_INET6
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domains that are not in one of the
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.Dv LISTEN , SYN_SENT ,
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or
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.Dv ESTABLISHED
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states may not be shown by
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.Nm ;
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use
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.Xr netstat 1
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to examine them instead.
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If a socket is associated with more than one file descriptor,
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it is shown multiple times.
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If a socket is not associated with any file descriptor,
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the first four columns have no meaning.
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.Sh SEE ALSO
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.Xr fstat 1 ,
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.Xr netstat 1 ,
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@ -167,10 +158,3 @@ The
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.Nm
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command and this manual page were written by
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.An Dag-Erling Sm\(/orgrav Aq des@FreeBSD.org .
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.Sh BUGS
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Unlike
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.Xr netstat 1 ,
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.Nm
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lists sockets by walking file descriptor tables and will not output
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the ones owned by the kernel, e.g. NLM sockets created by
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.Xr rpc.lockd 8 .
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@ -86,6 +86,7 @@ static int *ports;
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struct sock {
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void *socket;
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void *pcb;
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int shown;
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int vflag;
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int family;
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int proto;
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@ -570,13 +571,68 @@ check_ports(struct sock *s)
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return (0);
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}
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static void
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displaysock(struct sock *s, int pos)
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{
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void *p;
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int hash;
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while (pos < 29)
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pos += xprintf(" ");
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pos += xprintf("%s", s->protoname);
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if (s->vflag & INP_IPV4)
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pos += xprintf("4 ");
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if (s->vflag & INP_IPV6)
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pos += xprintf("6 ");
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while (pos < 36)
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pos += xprintf(" ");
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switch (s->family) {
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case AF_INET:
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case AF_INET6:
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pos += printaddr(s->family, &s->laddr);
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if (s->family == AF_INET6 && pos >= 58)
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pos += xprintf(" ");
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while (pos < 58)
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pos += xprintf(" ");
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pos += printaddr(s->family, &s->faddr);
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break;
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case AF_UNIX:
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/* server */
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if (s->laddr.ss_len > 0) {
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pos += printaddr(s->family, &s->laddr);
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break;
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}
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/* client */
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p = *(void **)&s->faddr;
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if (p == NULL) {
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pos += xprintf("(not connected)");
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break;
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}
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pos += xprintf("-> ");
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for (hash = 0; hash < HASHSIZE; ++hash) {
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for (s = sockhash[hash]; s != NULL; s = s->next)
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if (s->pcb == p)
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break;
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if (s != NULL)
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break;
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}
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if (s == NULL || s->laddr.ss_len == 0)
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pos += xprintf("??");
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else
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pos += printaddr(s->family, &s->laddr);
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break;
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default:
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abort();
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}
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xprintf("\n");
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}
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static void
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display(void)
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{
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struct passwd *pwd;
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struct xfile *xf;
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struct sock *s;
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void *p;
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int hash, n, pos;
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printf("%-8s %-10s %-5s %-2s %-6s %-21s %-21s\n",
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continue;
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if (!check_ports(s))
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continue;
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s->shown = 1;
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pos = 0;
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if ((pwd = getpwuid(xf->xf_uid)) == NULL)
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pos += xprintf("%lu ", (u_long)xf->xf_uid);
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while (pos < 26)
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pos += xprintf(" ");
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pos += xprintf("%d ", xf->xf_fd);
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while (pos < 29)
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pos += xprintf(" ");
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pos += xprintf("%s", s->protoname);
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if (s->vflag & INP_IPV4)
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pos += xprintf("4 ");
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if (s->vflag & INP_IPV6)
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pos += xprintf("6 ");
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while (pos < 36)
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pos += xprintf(" ");
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switch (s->family) {
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case AF_INET:
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case AF_INET6:
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pos += printaddr(s->family, &s->laddr);
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if (s->family == AF_INET6 && pos >= 58)
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pos += xprintf(" ");
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while (pos < 58)
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pos += xprintf(" ");
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pos += printaddr(s->family, &s->faddr);
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break;
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case AF_UNIX:
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/* server */
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if (s->laddr.ss_len > 0) {
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pos += printaddr(s->family, &s->laddr);
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break;
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}
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/* client */
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p = *(void **)&s->faddr;
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if (p == NULL) {
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pos += xprintf("(not connected)");
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break;
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}
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pos += xprintf("-> ");
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for (hash = 0; hash < HASHSIZE; ++hash) {
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for (s = sockhash[hash]; s != NULL; s = s->next)
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if (s->pcb == p)
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break;
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if (s != NULL)
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break;
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}
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if (s == NULL || s->laddr.ss_len == 0)
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pos += xprintf("??");
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else
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pos += printaddr(s->family, &s->laddr);
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break;
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default:
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abort();
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displaysock(s, pos);
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}
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for (hash = 0; hash < HASHSIZE; hash++) {
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for (s = sockhash[hash]; s != NULL; s = s->next) {
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if (s->shown)
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continue;
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if (!check_ports(s))
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continue;
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pos = 0;
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pos += xprintf("%-8s %-10s %-5s %-2s ",
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"?", "?", "?", "?");
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displaysock(s, pos);
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}
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xprintf("\n");
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}
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}
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