2 * ss.c "sockstat", socket statistics
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
17 #include <sys/ioctl.h>
18 #include <sys/socket.h>
20 #include <netinet/in.h>
24 #include <arpa/inet.h>
33 #include "libnetlink.h"
36 #include <linux/inet_diag.h>
37 #include <linux/tcp.h>
38 #include <net/tcp_states.h>
40 int resolve_hosts = 0;
41 int resolve_services = 1;
42 int preferred_family = AF_UNSPEC;
56 static const char *TCP_PROTO = "tcp";
57 static const char *UDP_PROTO = "udp";
58 static const char *RAW_PROTO = "raw";
59 static const char *dg_proto = NULL;
75 #define PACKET_DBM ((1<<PACKET_DG_DB)|(1<<PACKET_R_DB))
76 #define UNIX_DBM ((1<<UNIX_DG_DB)|(1<<UNIX_ST_DB))
77 #define ALL_DB ((1<<MAX_DB)-1)
95 #define SS_ALL ((1<<SS_MAX)-1)
107 struct filter default_filter = {
109 states: SS_ALL & ~((1<<SS_LISTEN)|(1<<SS_CLOSE)|(1<<SS_TIME_WAIT)|(1<<SS_SYN_RECV)),
110 families: (1<<AF_INET)|(1<<AF_INET6),
113 struct filter current_filter;
115 int generic_proc_open(char *env, char *name)
118 char *p = getenv(env);
120 p = getenv("PROC_ROOT") ? : "/proc";
121 snprintf(store, sizeof(store)-1, "%s/%s", p, name);
124 return open(store, O_RDONLY);
127 int net_tcp_open(void)
129 return generic_proc_open("PROC_NET_TCP", "net/tcp");
132 int net_tcp6_open(void)
134 return generic_proc_open("PROC_NET_TCP6", "net/tcp6");
137 int net_udp_open(void)
139 return generic_proc_open("PROC_NET_UDP", "net/udp");
142 int net_udp6_open(void)
144 return generic_proc_open("PROC_NET_UDP6", "net/udp6");
147 int net_raw_open(void)
149 return generic_proc_open("PROC_NET_RAW", "net/raw");
152 int net_raw6_open(void)
154 return generic_proc_open("PROC_NET_RAW6", "net/raw6");
157 int net_unix_open(void)
159 return generic_proc_open("PROC_NET_UNIX", "net/unix");
162 int net_packet_open(void)
164 return generic_proc_open("PROC_NET_PACKET", "net/packet");
167 int net_netlink_open(void)
169 return generic_proc_open("PROC_NET_NETLINK", "net/netlink");
172 int slabinfo_open(void)
174 return generic_proc_open("PROC_SLABINFO", "slabinfo");
177 int net_sockstat_open(void)
179 return generic_proc_open("PROC_NET_SOCKSTAT", "net/sockstat");
182 int net_sockstat6_open(void)
184 return generic_proc_open("PROC_NET_SOCKSTAT6", "net/sockstat6");
187 int net_snmp_open(void)
189 return generic_proc_open("PROC_NET_SNMP", "net/snmp");
192 int net_netstat_open(void)
194 return generic_proc_open("PROC_NET_NETSTAT", "net/netstat");
197 int ephemeral_ports_open(void)
199 return generic_proc_open("PROC_IP_LOCAL_PORT_RANGE", "sys/net/ipv4/ip_local_port_range");
202 int find_users(int ino, char *buf, int buflen)
216 sprintf(pattern, "socket:[%d]", ino);
217 pattern_len = strlen(pattern);
219 strncpy(name, getenv("PROC_ROOT") ? : "/proc/", sizeof(name)/2);
220 name[sizeof(name)/2] = 0;
221 if (strlen(name) == 0 ||
222 name[strlen(name)-1] != '/')
224 nameoff = strlen(name);
225 if ((dir = opendir(name)) == NULL)
228 while ((d = readdir(dir)) != NULL) {
236 if (sscanf(d->d_name, "%d%c", &pid, &crap) != 1)
239 sprintf(name+nameoff, "%d/fd/", pid);
241 if ((dir1 = opendir(name)) == NULL)
246 while ((d1 = readdir(dir1)) != NULL) {
250 if (sscanf(d1->d_name, "%d%c", &fd, &crap) != 1)
253 sprintf(name+pos, "%d", fd);
254 n = readlink(name, lnk, sizeof(lnk)-1);
255 if (n != pattern_len ||
256 memcmp(lnk, pattern, n))
259 if (ptr-buf >= buflen-1)
262 if (process[0] == 0) {
265 snprintf(tmp, sizeof(tmp), "%s/%d/stat",
266 getenv("PROC_ROOT") ? : "/proc", pid);
267 if ((fp = fopen(tmp, "r")) != NULL) {
268 fscanf(fp, "%*d (%[^)])", process);
273 snprintf(ptr, buflen-(ptr-buf), "(\"%s\",%d,%d),", process, pid, fd);
286 /* Get stats from slab */
297 struct slabstat slabstat;
299 static const char *slabstat_ids[] =
308 int get_slabstat(struct slabstat *s)
314 memset(s, 0, sizeof(*s));
316 if ((fp = fdopen(slabinfo_open(), "r")) == NULL)
319 cnt = sizeof(*s)/sizeof(int);
321 fgets(buf, sizeof(buf), fp);
322 while(fgets(buf, sizeof(buf), fp) != NULL) {
324 for (i=0; i<sizeof(slabstat_ids)/sizeof(slabstat_ids[0]); i++) {
325 if (memcmp(buf, slabstat_ids[i], strlen(slabstat_ids[i])) == 0) {
326 sscanf(buf, "%*s%d", ((int *)s) + i);
339 static const char *sstate_name[] = {
341 [TCP_ESTABLISHED] = "ESTAB",
342 [TCP_SYN_SENT] = "SYN-SENT",
343 [TCP_SYN_RECV] = "SYN-RECV",
344 [TCP_FIN_WAIT1] = "FIN-WAIT-1",
345 [TCP_FIN_WAIT2] = "FIN-WAIT-2",
346 [TCP_TIME_WAIT] = "TIME-WAIT",
347 [TCP_CLOSE] = "UNCONN",
348 [TCP_CLOSE_WAIT] = "CLOSE-WAIT",
349 [TCP_LAST_ACK] = "LAST-ACK",
350 [TCP_LISTEN] = "LISTEN",
351 [TCP_CLOSING] = "CLOSING",
354 static const char *sstate_namel[] = {
356 [TCP_ESTABLISHED] = "established",
357 [TCP_SYN_SENT] = "syn-sent",
358 [TCP_SYN_RECV] = "syn-recv",
359 [TCP_FIN_WAIT1] = "fin-wait-1",
360 [TCP_FIN_WAIT2] = "fin-wait-2",
361 [TCP_TIME_WAIT] = "time-wait",
362 [TCP_CLOSE] = "unconnected",
363 [TCP_CLOSE_WAIT] = "close-wait",
364 [TCP_LAST_ACK] = "last-ack",
365 [TCP_LISTEN] = "listening",
366 [TCP_CLOSING] = "closing",
384 unsigned long long sk;
385 int rto, ato, qack, cwnd, ssthresh;
388 static const char *tmr_name[] = {
397 const char *print_ms_timer(int timeout)
400 int secs, msecs, minutes;
406 msecs = timeout%1000;
410 snprintf(buf, sizeof(buf)-16, "%dmin", minutes);
417 sprintf(buf+strlen(buf), "%d%s", secs, msecs ? "." : "sec");
420 sprintf(buf+strlen(buf), "%03dms", msecs);
424 const char *print_hz_timer(int timeout)
427 return print_ms_timer(((timeout*1000) + hz-1)/hz);
438 struct scache *rlist;
440 void init_service_resolver(void)
443 FILE *fp = popen("/usr/sbin/rpcinfo -p 2>/dev/null", "r");
445 fgets(buf, sizeof(buf), fp);
446 while (fgets(buf, sizeof(buf), fp) != NULL) {
447 unsigned int progn, port;
448 char proto[128], prog[128];
449 if (sscanf(buf, "%u %*d %s %u %s", &progn, proto,
450 &port, prog+4) == 4) {
451 struct scache *c = malloc(sizeof(*c));
454 memcpy(prog, "rpc.", 4);
455 c->name = strdup(prog);
456 if (strcmp(proto, TCP_PROTO) == 0)
457 c->proto = TCP_PROTO;
458 else if (strcmp(proto, UDP_PROTO) == 0)
459 c->proto = UDP_PROTO;
470 static int ip_local_port_min, ip_local_port_max;
472 /* Even do not try default linux ephemeral port ranges:
473 * default /etc/services contains so much of useless crap
474 * wouldbe "allocated" to this area that resolution
475 * is really harmful. I shrug each time when seeing
476 * "socks" or "cfinger" in dumps.
478 static int is_ephemeral(int port)
480 if (!ip_local_port_min) {
481 FILE *f = fdopen(ephemeral_ports_open(), "r");
484 &ip_local_port_min, &ip_local_port_max);
487 ip_local_port_min = 1024;
488 ip_local_port_max = 4999;
492 return (port >= ip_local_port_min && port<= ip_local_port_max);
496 const char *__resolve_service(int port)
500 for (c = rlist; c; c = c->next) {
501 if (c->port == port && c->proto == dg_proto)
505 if (!is_ephemeral(port)) {
512 se = getservbyport(htons(port), dg_proto);
521 const char *resolve_service(int port)
523 static char buf[128];
524 static struct scache cache[256];
532 if (resolve_services) {
533 if (dg_proto == RAW_PROTO) {
534 return inet_proto_n2a(port, buf, sizeof(buf));
538 int hash = (port^(((unsigned long)dg_proto)>>2))&255;
540 for (c = &cache[hash]; c; c = c->next) {
541 if (c->port == port &&
542 c->proto == dg_proto) {
549 if ((res = __resolve_service(port)) != NULL) {
550 if ((c = malloc(sizeof(*c))) == NULL)
561 c->name = strdup(res);
562 c->next = cache[hash].next;
563 cache[hash].next = c;
571 sprintf(buf, "%u", port);
575 void formatted_print(const inet_prefix *a, int port)
578 const char *ap = buf;
581 est_len = addr_width;
583 if (a->family == AF_INET) {
584 if (a->data[0] == 0) {
588 ap = format_host(AF_INET, 4, a->data, buf, sizeof(buf));
591 ap = format_host(a->family, 16, a->data, buf, sizeof(buf));
592 est_len = strlen(ap);
593 if (est_len <= addr_width)
594 est_len = addr_width;
596 est_len = addr_width + ((est_len-addr_width+3)/4)*4;
598 printf("%*s:%-*s ", est_len, ap, serv_width, resolve_service(port));
605 struct aafilter *next;
608 int inet2_addr_match(const inet_prefix *a, const inet_prefix *p, int plen)
610 if (!inet_addr_match(a, p, plen))
613 /* Cursed "v4 mapped" addresses: v4 mapped socket matches
614 * pure IPv4 rule, but v4-mapped rule selects only v4-mapped
616 if (p->family == AF_INET && a->family == AF_INET6) {
617 if (a->data[0] == 0 && a->data[1] == 0 &&
618 a->data[2] == htonl(0xffff)) {
619 inet_prefix tmp = *a;
620 tmp.data[0] = a->data[3];
621 return inet_addr_match(&tmp, p, plen);
627 int unix_match(const inet_prefix *a, const inet_prefix *p)
629 char *addr, *pattern;
630 memcpy(&addr, a->data, sizeof(addr));
631 memcpy(&pattern, p->data, sizeof(pattern));
636 return !fnmatch(pattern, addr, 0);
639 int run_ssfilter(struct ssfilter *f, struct tcpstat *s)
644 static int low, high=65535;
646 if (s->local.family == AF_UNIX) {
648 memcpy(&p, s->local.data, sizeof(p));
649 return p == NULL || (p[0] == '@' && strlen(p) == 6 &&
650 strspn(p+1, "0123456789abcdef") == 5);
652 if (s->local.family == AF_PACKET)
653 return s->lport == 0 && s->local.data == 0;
654 if (s->local.family == AF_NETLINK)
658 FILE *fp = fdopen(ephemeral_ports_open(), "r");
660 fscanf(fp, "%d%d", &low, &high);
664 return s->lport >= low && s->lport <= high;
668 struct aafilter *a = (void*)f->pred;
669 if (a->addr.family == AF_UNIX)
670 return unix_match(&s->remote, &a->addr);
671 if (a->port != -1 && a->port != s->rport)
673 if (a->addr.bitlen) {
675 if (!inet2_addr_match(&s->remote, &a->addr, a->addr.bitlen))
677 } while ((a = a->next) != NULL);
684 struct aafilter *a = (void*)f->pred;
685 if (a->addr.family == AF_UNIX)
686 return unix_match(&s->local, &a->addr);
687 if (a->port != -1 && a->port != s->lport)
689 if (a->addr.bitlen) {
691 if (!inet2_addr_match(&s->local, &a->addr, a->addr.bitlen))
693 } while ((a = a->next) != NULL);
700 struct aafilter *a = (void*)f->pred;
701 return s->rport >= a->port;
705 struct aafilter *a = (void*)f->pred;
706 return s->rport <= a->port;
710 struct aafilter *a = (void*)f->pred;
711 return s->lport >= a->port;
715 struct aafilter *a = (void*)f->pred;
716 return s->lport <= a->port;
719 /* Yup. It is recursion. Sorry. */
721 return run_ssfilter(f->pred, s) && run_ssfilter(f->post, s);
723 return run_ssfilter(f->pred, s) || run_ssfilter(f->post, s);
725 return !run_ssfilter(f->pred, s);
731 /* Relocate external jumps by reloc. */
732 static void ssfilter_patch(char *a, int len, int reloc)
735 struct inet_diag_bc_op *op = (struct inet_diag_bc_op*)a;
745 static int ssfilter_bytecompile(struct ssfilter *f, char **bytecode)
750 if (!(*bytecode=malloc(4))) abort();
751 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_AUTO, 4, 8 };
757 struct aafilter *a = (void*)f->pred;
760 int code = (f->type == SSF_DCOND ? INET_DIAG_BC_D_COND : INET_DIAG_BC_S_COND);
763 for (b=a; b; b=b->next) {
764 len += 4 + sizeof(struct inet_diag_hostcond);
765 if (a->addr.family == AF_INET6)
772 if (!(ptr = malloc(len))) abort();
774 for (b=a; b; b=b->next) {
775 struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)ptr;
776 int alen = (a->addr.family == AF_INET6 ? 16 : 4);
777 int oplen = alen + 4 + sizeof(struct inet_diag_hostcond);
778 struct inet_diag_hostcond *cond = (struct inet_diag_hostcond*)(ptr+4);
780 *op = (struct inet_diag_bc_op){ code, oplen, oplen+4 };
781 cond->family = a->addr.family;
782 cond->port = a->port;
783 cond->prefix_len = a->addr.bitlen;
784 memcpy(cond->addr, a->addr.data, alen);
787 op = (struct inet_diag_bc_op *)ptr;
788 *op = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, len - (ptr-*bytecode)};
792 return ptr - *bytecode;
796 struct aafilter *x = (void*)f->pred;
797 if (!(*bytecode=malloc(8))) abort();
798 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_GE, 8, 12 };
799 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
804 struct aafilter *x = (void*)f->pred;
805 if (!(*bytecode=malloc(8))) abort();
806 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_LE, 8, 12 };
807 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
812 struct aafilter *x = (void*)f->pred;
813 if (!(*bytecode=malloc(8))) abort();
814 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_GE, 8, 12 };
815 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
820 struct aafilter *x = (void*)f->pred;
821 if (!(*bytecode=malloc(8))) abort();
822 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_LE, 8, 12 };
823 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
829 char *a1, *a2, *a, l1, l2;
830 l1 = ssfilter_bytecompile(f->pred, &a1);
831 l2 = ssfilter_bytecompile(f->post, &a2);
832 if (!(a = malloc(l1+l2))) abort();
834 memcpy(a+l1, a2, l2);
836 ssfilter_patch(a, l1, l2);
842 char *a1, *a2, *a, l1, l2;
843 l1 = ssfilter_bytecompile(f->pred, &a1);
844 l2 = ssfilter_bytecompile(f->post, &a2);
845 if (!(a = malloc(l1+l2+4))) abort();
847 memcpy(a+l1+4, a2, l2);
849 *(struct inet_diag_bc_op*)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, l2+4 };
856 l1 = ssfilter_bytecompile(f->pred, &a1);
857 if (!(a = malloc(l1+4))) abort();
860 *(struct inet_diag_bc_op*)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, 8 };
869 static int remember_he(struct aafilter *a, struct hostent *he)
871 char **ptr = he->h_addr_list;
875 if (he->h_addrtype == AF_INET)
877 else if (he->h_addrtype == AF_INET6)
883 struct aafilter *b = a;
884 if (a->addr.bitlen) {
885 if ((b = malloc(sizeof(*b))) == NULL)
891 memcpy(b->addr.data, *ptr, len);
892 b->addr.bytelen = len;
893 b->addr.bitlen = len*8;
894 b->addr.family = he->h_addrtype;
901 static int get_dns_host(struct aafilter *a, const char *addr, int fam)
912 he = gethostbyname2(addr, fam == AF_UNSPEC ? AF_INET : fam);
914 cnt = remember_he(a, he);
915 if (fam == AF_UNSPEC) {
916 he = gethostbyname2(addr, AF_INET6);
918 cnt += remember_he(a, he);
923 static int xll_initted = 0;
925 static void xll_init(void)
927 struct rtnl_handle rth;
934 static const char *xll_index_to_name(int index)
938 return ll_index_to_name(index);
941 static int xll_name_to_index(const char *dev)
945 return ll_name_to_index(dev);
948 void *parse_hostcond(char *addr)
952 struct aafilter *res;
953 int fam = preferred_family;
955 memset(&a, 0, sizeof(a));
958 if (fam == AF_UNIX || strncmp(addr, "unix:", 5) == 0) {
960 a.addr.family = AF_UNIX;
961 if (strncmp(addr, "unix:", 5) == 0)
964 a.addr.bitlen = 8*strlen(p);
965 memcpy(a.addr.data, &p, sizeof(p));
969 if (fam == AF_PACKET || strncmp(addr, "link:", 5) == 0) {
970 a.addr.family = AF_PACKET;
972 if (strncmp(addr, "link:", 5) == 0)
974 port = strchr(addr, ':');
977 if (port[1] && strcmp(port+1, "*")) {
978 if (get_integer(&a.port, port+1, 0)) {
979 if ((a.port = xll_name_to_index(port+1)) <= 0)
984 if (addr[0] && strcmp(addr, "*")) {
987 if (ll_proto_a2n(&tmp, addr))
989 a.addr.data[0] = ntohs(tmp);
994 if (fam == AF_NETLINK || strncmp(addr, "netlink:", 8) == 0) {
995 a.addr.family = AF_NETLINK;
997 if (strncmp(addr, "netlink:", 8) == 0)
999 port = strchr(addr, ':');
1002 if (port[1] && strcmp(port+1, "*")) {
1003 if (get_integer(&a.port, port+1, 0)) {
1004 if (strcmp(port+1, "kernel") == 0)
1011 if (addr[0] && strcmp(addr, "*")) {
1013 if (get_u32(a.addr.data, addr, 0)) {
1014 if (strcmp(addr, "rtnl") == 0)
1016 else if (strcmp(addr, "fw") == 0)
1018 else if (strcmp(addr, "tcpdiag") == 0)
1027 if (strncmp(addr, "inet:", 5) == 0) {
1030 } else if (strncmp(addr, "inet6:", 6) == 0) {
1035 /* URL-like literal [] */
1036 if (addr[0] == '[') {
1038 if ((port = strchr(addr, ']')) == NULL)
1041 } else if (addr[0] == '*') {
1044 port = strrchr(strchr(addr, '/') ? : addr, ':');
1046 if (port && *port) {
1050 if (*port && *port != '*') {
1051 if (get_integer(&a.port, port, 0)) {
1052 struct servent *se1 = NULL;
1053 struct servent *se2 = NULL;
1054 if (current_filter.dbs&(1<<UDP_DB))
1055 se1 = getservbyname(port, UDP_PROTO);
1056 if (current_filter.dbs&(1<<TCP_DB))
1057 se2 = getservbyname(port, TCP_PROTO);
1058 if (se1 && se2 && se1->s_port != se2->s_port) {
1059 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1065 a.port = ntohs(se1->s_port);
1068 for (s = rlist; s; s = s->next) {
1069 if ((s->proto == UDP_PROTO &&
1070 (current_filter.dbs&(1<<UDP_DB))) ||
1071 (s->proto == TCP_PROTO &&
1072 (current_filter.dbs&(1<<TCP_DB)))) {
1073 if (s->name && strcmp(s->name, port) == 0) {
1074 if (a.port > 0 && a.port != s->port) {
1075 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1083 fprintf(stderr, "Error: \"%s\" does not look like a port.\n", port);
1090 if (addr && *addr && *addr != '*') {
1091 if (get_prefix_1(&a.addr, addr, fam)) {
1092 if (get_dns_host(&a, addr, fam)) {
1093 fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", addr);
1100 res = malloc(sizeof(*res));
1102 memcpy(res, &a, sizeof(a));
1106 static int tcp_show_line(char *line, struct filter *f, int family)
1109 char *loc, *rem, *data;
1114 if ((p = strchr(line, ':')) == NULL)
1118 if ((p = strchr(loc, ':')) == NULL)
1123 if ((p = strchr(rem, ':')) == NULL)
1129 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
1131 if (!(f->states & (1<<state)))
1135 s.local.family = s.remote.family = family;
1136 if (family == AF_INET) {
1137 sscanf(loc, "%x:%x", s.local.data, (unsigned*)&s.lport);
1138 sscanf(rem, "%x:%x", s.remote.data, (unsigned*)&s.rport);
1139 s.local.bytelen = s.remote.bytelen = 4;
1141 sscanf(loc, "%08x%08x%08x%08x:%x",
1147 sscanf(rem, "%08x%08x%08x%08x:%x",
1153 s.local.bytelen = s.remote.bytelen = 16;
1156 if (f->f && run_ssfilter(f->f, &s) == 0)
1160 n = sscanf(data, "%x %x:%x %x:%x %x %d %d %d %d %llx %d %d %d %d %d %[^\n]\n",
1161 &s.state, &s.wq, &s.rq,
1162 &s.timer, &s.timeout, &s.retrs, &s.uid, &s.probes, &s.ino,
1163 &s.refcnt, &s.sk, &s.rto, &s.ato, &s.qack,
1164 &s.cwnd, &s.ssthresh, opt);
1177 printf("%-*s ", netid_width, "tcp");
1179 printf("%-*s ", state_width, sstate_name[s.state]);
1181 printf("%-6d %-6d ", s.rq, s.wq);
1183 formatted_print(&s.local, s.lport);
1184 formatted_print(&s.remote, s.rport);
1190 printf(" timer:(%s,%s,%d)",
1192 print_hz_timer(s.timeout),
1193 s.timer != 1 ? s.probes : s.retrs);
1197 if (s.rto && s.rto != 3*get_hz())
1198 printf(" rto:%g", (double)s.rto/get_hz());
1200 printf(" ato:%g", (double)s.ato/get_hz());
1202 printf(" cwnd:%d", s.cwnd);
1203 if (s.ssthresh != -1)
1204 printf(" ssthresh:%d", s.ssthresh);
1206 printf(" qack:%d", s.qack/2);
1212 if (find_users(s.ino, ubuf, sizeof(ubuf)) > 0)
1213 printf(" users:(%s)", ubuf);
1217 printf(" uid:%u", (unsigned)s.uid);
1218 printf(" ino:%u", (unsigned)s.ino);
1219 printf(" sk:%llx", s.sk);
1221 printf(" opt:\"%s\"", opt);
1228 static int generic_record_read(int fd, char *buf, int bufsize,
1229 int (*worker)(char*, struct filter *, int),
1230 struct filter *f, int fam)
1237 /* Load the first chunk and calculate record length from it. */
1238 n = read(fd, buf, bufsize);
1241 /* I _know_ that this is wrong, do not remind. :-)
1242 * But this works nowadays. */
1245 p = memchr(buf, '\n', n);
1246 if (p == NULL || (p-buf) >= n)
1247 goto outwrongformat;
1248 recsize = (p-buf)+1;
1252 while ((p+recsize) - buf <= n) {
1253 if (p[recsize-1] != '\n')
1254 goto outwrongformat;
1256 if (worker(p, f, fam) < 0)
1261 int remains = (buf+bufsize) - p;
1262 memcpy(buf, p, remains);
1264 n = read(fd, p, (buf+bufsize) - p);
1267 if (n < (buf+bufsize) - p) {
1271 goto outwrongformat;
1279 goto outwrongformat;
1292 static char *sprint_bw(char *buf, double bw)
1295 sprintf(buf,"%.1fM", bw / 1000000.);
1296 else if (bw > 1000.)
1297 sprintf(buf,"%.1fK", bw / 1000.);
1299 sprintf(buf, "%g", bw);
1304 static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r)
1306 struct rtattr * tb[INET_DIAG_MAX+1];
1310 parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr*)(r+1),
1311 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
1313 if (tb[INET_DIAG_MEMINFO]) {
1314 const struct inet_diag_meminfo *minfo
1315 = RTA_DATA(tb[INET_DIAG_MEMINFO]);
1316 printf(" mem:(r%u,w%u,f%u,t%u)",
1323 if (tb[INET_DIAG_INFO]) {
1324 struct tcp_info *info;
1325 int len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
1327 /* workaround for older kernels with less fields */
1328 if (len < sizeof(*info)) {
1329 info = alloca(sizeof(*info));
1330 memset(info, 0, sizeof(*info));
1331 memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
1333 info = RTA_DATA(tb[INET_DIAG_INFO]);
1336 if (info->tcpi_options & TCPI_OPT_TIMESTAMPS)
1338 if (info->tcpi_options & TCPI_OPT_SACK)
1340 if (info->tcpi_options & TCPI_OPT_ECN)
1344 if (tb[INET_DIAG_CONG])
1345 printf("%s", (char *) RTA_DATA(tb[INET_DIAG_CONG]));
1347 if (info->tcpi_options & TCPI_OPT_WSCALE)
1348 printf(" wscale:%d,%d", info->tcpi_snd_wscale,
1349 info->tcpi_rcv_wscale);
1350 if (info->tcpi_rto && info->tcpi_rto != 3000000)
1351 printf(" rto:%g", (double)info->tcpi_rto/1000);
1353 printf(" rtt:%g/%g", (double)info->tcpi_rtt/1000,
1354 (double)info->tcpi_rttvar/1000);
1356 printf(" ato:%g", (double)info->tcpi_ato/1000);
1357 if (info->tcpi_snd_cwnd != 2)
1358 printf(" cwnd:%d", info->tcpi_snd_cwnd);
1359 if (info->tcpi_snd_ssthresh < 0xFFFF)
1360 printf(" ssthresh:%d", info->tcpi_snd_ssthresh);
1362 rtt = (double) info->tcpi_rtt;
1363 if (tb[INET_DIAG_VEGASINFO]) {
1364 const struct tcpvegas_info *vinfo
1365 = RTA_DATA(tb[INET_DIAG_VEGASINFO]);
1367 if (vinfo->tcpv_enabled &&
1368 vinfo->tcpv_rtt && vinfo->tcpv_rtt != 0x7fffffff)
1369 rtt = vinfo->tcpv_rtt;
1372 if (rtt > 0 && info->tcpi_snd_mss && info->tcpi_snd_cwnd) {
1373 printf(" send %sbps",
1374 sprint_bw(b1, (double) info->tcpi_snd_cwnd *
1375 (double) info->tcpi_snd_mss * 8000000.
1379 if (info->tcpi_rcv_rtt)
1380 printf(" rcv_rtt:%g", (double) info->tcpi_rcv_rtt/1000);
1381 if (info->tcpi_rcv_space)
1382 printf(" rcv_space:%d", info->tcpi_rcv_space);
1387 int tcp_show_sock(struct nlmsghdr *nlh, struct filter *f)
1389 struct inet_diag_msg *r = NLMSG_DATA(nlh);
1392 s.state = r->idiag_state;
1393 s.local.family = s.remote.family = r->idiag_family;
1394 s.lport = ntohs(r->id.idiag_sport);
1395 s.rport = ntohs(r->id.idiag_dport);
1396 if (s.local.family == AF_INET) {
1397 s.local.bytelen = s.remote.bytelen = 4;
1399 s.local.bytelen = s.remote.bytelen = 16;
1401 memcpy(s.local.data, r->id.idiag_src, s.local.bytelen);
1402 memcpy(s.remote.data, r->id.idiag_dst, s.local.bytelen);
1404 if (f && f->f && run_ssfilter(f->f, &s) == 0)
1408 printf("%-*s ", netid_width, "tcp");
1410 printf("%-*s ", state_width, sstate_name[s.state]);
1412 printf("%-6d %-6d ", r->idiag_rqueue, r->idiag_wqueue);
1414 formatted_print(&s.local, s.lport);
1415 formatted_print(&s.remote, s.rport);
1418 if (r->idiag_timer) {
1419 if (r->idiag_timer > 4)
1421 printf(" timer:(%s,%s,%d)",
1422 tmr_name[r->idiag_timer],
1423 print_ms_timer(r->idiag_expires),
1429 if (find_users(r->idiag_inode, ubuf, sizeof(ubuf)) > 0)
1430 printf(" users:(%s)", ubuf);
1434 printf(" uid:%u", (unsigned)r->idiag_uid);
1435 printf(" ino:%u", (unsigned)r->idiag_inode);
1436 printf(" sk:%08x", r->id.idiag_cookie[0]);
1437 if (r->id.idiag_cookie[1] != 0)
1438 printf("%08x", r->id.idiag_cookie[1]);
1440 if (show_mem || show_tcpinfo) {
1442 tcp_show_info(nlh, r);
1450 int tcp_show_netlink(struct filter *f, FILE *dump_fp, int socktype)
1453 struct sockaddr_nl nladdr;
1455 struct nlmsghdr nlh;
1456 struct inet_diag_req r;
1463 struct iovec iov[3];
1465 if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_INET_DIAG)) < 0)
1468 memset(&nladdr, 0, sizeof(nladdr));
1469 nladdr.nl_family = AF_NETLINK;
1471 req.nlh.nlmsg_len = sizeof(req);
1472 req.nlh.nlmsg_type = socktype;
1473 req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
1474 req.nlh.nlmsg_pid = 0;
1475 req.nlh.nlmsg_seq = 123456;
1476 memset(&req.r, 0, sizeof(req.r));
1477 req.r.idiag_family = AF_INET;
1478 req.r.idiag_states = f->states;
1480 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
1483 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
1484 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
1485 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
1488 iov[0] = (struct iovec){
1490 .iov_len = sizeof(req)
1493 bclen = ssfilter_bytecompile(f->f, &bc);
1494 rta.rta_type = INET_DIAG_REQ_BYTECODE;
1495 rta.rta_len = RTA_LENGTH(bclen);
1496 iov[1] = (struct iovec){ &rta, sizeof(rta) };
1497 iov[2] = (struct iovec){ bc, bclen };
1498 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
1501 msg = (struct msghdr) {
1502 .msg_name = (void*)&nladdr,
1503 .msg_namelen = sizeof(nladdr),
1505 .msg_iovlen = f->f ? 3 : 1,
1508 if (sendmsg(fd, &msg, 0) < 0)
1511 iov[0] = (struct iovec){
1513 .iov_len = sizeof(buf)
1520 msg = (struct msghdr) {
1521 (void*)&nladdr, sizeof(nladdr),
1527 status = recvmsg(fd, &msg, 0);
1536 fprintf(stderr, "EOF on netlink\n");
1541 fwrite(buf, 1, NLMSG_ALIGN(status), dump_fp);
1543 h = (struct nlmsghdr*)buf;
1544 while (NLMSG_OK(h, status)) {
1547 if (/*h->nlmsg_pid != rth->local.nl_pid ||*/
1548 h->nlmsg_seq != 123456)
1551 if (h->nlmsg_type == NLMSG_DONE)
1553 if (h->nlmsg_type == NLMSG_ERROR) {
1554 struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
1555 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
1556 fprintf(stderr, "ERROR truncated\n");
1558 errno = -err->error;
1559 perror("TCPDIAG answers");
1564 err = tcp_show_sock(h, NULL);
1570 h = NLMSG_NEXT(h, status);
1572 if (msg.msg_flags & MSG_TRUNC) {
1573 fprintf(stderr, "Message truncated\n");
1577 fprintf(stderr, "!!!Remnant of size %d\n", status);
1584 int tcp_show_netlink_file(struct filter *f)
1589 if ((fp = fopen(getenv("TCPDIAG_FILE"), "r")) == NULL) {
1590 perror("fopen($TCPDIAG_FILE)");
1596 struct nlmsghdr *h = (struct nlmsghdr*)buf;
1598 status = fread(buf, 1, sizeof(*h), fp);
1600 perror("Reading header from $TCPDIAG_FILE");
1603 if (status != sizeof(*h)) {
1604 perror("Unexpected EOF reading $TCPDIAG_FILE");
1608 status = fread(h+1, 1, NLMSG_ALIGN(h->nlmsg_len-sizeof(*h)), fp);
1611 perror("Reading $TCPDIAG_FILE");
1614 if (status + sizeof(*h) < h->nlmsg_len) {
1615 perror("Unexpected EOF reading $TCPDIAG_FILE");
1619 /* The only legal exit point */
1620 if (h->nlmsg_type == NLMSG_DONE)
1623 if (h->nlmsg_type == NLMSG_ERROR) {
1624 struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
1625 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
1626 fprintf(stderr, "ERROR truncated\n");
1628 errno = -err->error;
1629 perror("TCPDIAG answered");
1634 err = tcp_show_sock(h, f);
1640 int tcp_show(struct filter *f, int socktype)
1644 int bufsize = 64*1024;
1646 dg_proto = TCP_PROTO;
1648 if (getenv("TCPDIAG_FILE"))
1649 return tcp_show_netlink_file(f);
1651 if (!getenv("PROC_NET_TCP") && !getenv("PROC_ROOT")
1652 && tcp_show_netlink(f, NULL, socktype) == 0)
1655 /* Sigh... We have to parse /proc/net/tcp... */
1657 /* Estimate amount of sockets and try to allocate
1658 * huge buffer to read all the table at one read.
1659 * Limit it by 16MB though. The assumption is: as soon as
1660 * kernel was able to hold information about N connections,
1661 * it is able to give us some memory for snapshot.
1664 int guess = slabstat.socks+slabstat.tcp_syns;
1665 if (f->states&(1<<SS_TIME_WAIT))
1666 guess += slabstat.tcp_tws;
1667 if (guess > (16*1024*1024)/128)
1668 guess = (16*1024*1024)/128;
1670 if (guess > bufsize)
1673 while (bufsize >= 64*1024) {
1674 if ((buf = malloc(bufsize)) != NULL)
1683 if (f->families & (1<<AF_INET)) {
1684 if ((fd = net_tcp_open()) < 0)
1686 if (generic_record_read(fd, buf, bufsize, tcp_show_line, f, AF_INET))
1691 if ((f->families & (1<<AF_INET6)) &&
1692 (fd = net_tcp6_open()) >= 0) {
1693 if (generic_record_read(fd, buf, bufsize, tcp_show_line, f, AF_INET6))
1703 int saved_errno = errno;
1708 errno = saved_errno;
1714 int dgram_show_line(char *line, struct filter *f, int family)
1717 char *loc, *rem, *data;
1722 if ((p = strchr(line, ':')) == NULL)
1726 if ((p = strchr(loc, ':')) == NULL)
1731 if ((p = strchr(rem, ':')) == NULL)
1737 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
1739 if (!(f->states & (1<<state)))
1743 s.local.family = s.remote.family = family;
1744 if (family == AF_INET) {
1745 sscanf(loc, "%x:%x", s.local.data, (unsigned*)&s.lport);
1746 sscanf(rem, "%x:%x", s.remote.data, (unsigned*)&s.rport);
1747 s.local.bytelen = s.remote.bytelen = 4;
1749 sscanf(loc, "%08x%08x%08x%08x:%x",
1755 sscanf(rem, "%08x%08x%08x%08x:%x",
1761 s.local.bytelen = s.remote.bytelen = 16;
1764 if (f->f && run_ssfilter(f->f, &s) == 0)
1768 n = sscanf(data, "%x %x:%x %*x:%*x %*x %d %*d %d %d %llx %[^\n]\n",
1769 &s.state, &s.wq, &s.rq,
1771 &s.refcnt, &s.sk, opt);
1777 printf("%-*s ", netid_width, dg_proto);
1779 printf("%-*s ", state_width, sstate_name[s.state]);
1781 printf("%-6d %-6d ", s.rq, s.wq);
1783 formatted_print(&s.local, s.lport);
1784 formatted_print(&s.remote, s.rport);
1788 if (find_users(s.ino, ubuf, sizeof(ubuf)) > 0)
1789 printf(" users:(%s)", ubuf);
1794 printf(" uid=%u", (unsigned)s.uid);
1795 printf(" ino=%u", (unsigned)s.ino);
1796 printf(" sk=%llx", s.sk);
1798 printf(" opt:\"%s\"", opt);
1806 int udp_show(struct filter *f)
1810 int bufsize = sizeof(buf);
1812 dg_proto = UDP_PROTO;
1814 if (f->families&(1<<AF_INET)) {
1815 if ((fd = net_udp_open()) < 0)
1817 if (generic_record_read(fd, buf, bufsize, dgram_show_line, f, AF_INET))
1822 if ((f->families&(1<<AF_INET6)) &&
1823 (fd = net_udp6_open()) >= 0) {
1824 if (generic_record_read(fd, buf, bufsize, dgram_show_line, f, AF_INET6))
1832 int saved_errno = errno;
1835 errno = saved_errno;
1840 int raw_show(struct filter *f)
1844 int bufsize = sizeof(buf);
1846 dg_proto = RAW_PROTO;
1848 if (f->families&(1<<AF_INET)) {
1849 if ((fd = net_raw_open()) < 0)
1851 if (generic_record_read(fd, buf, bufsize, dgram_show_line, f, AF_INET))
1856 if ((f->families&(1<<AF_INET6)) &&
1857 (fd = net_raw6_open()) >= 0) {
1858 if (generic_record_read(fd, buf, bufsize, dgram_show_line, f, AF_INET6))
1866 int saved_errno = errno;
1869 errno = saved_errno;
1877 struct unixstat *next;
1889 int unix_state_map[] = { SS_CLOSE, SS_SYN_SENT,
1890 SS_ESTABLISHED, SS_CLOSING };
1893 #define MAX_UNIX_REMEMBER (1024*1024/sizeof(struct unixstat))
1895 void unix_list_free(struct unixstat *list)
1898 struct unixstat *s = list;
1906 void unix_list_print(struct unixstat *list, struct filter *f)
1911 for (s = list; s; s = s->next) {
1912 if (!(f->states & (1<<s->state)))
1914 if (s->type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB)))
1916 if (s->type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB)))
1922 for (p = list; p; p = p->next) {
1923 if (s->peer == p->ino)
1929 peer = p->name ? : "*";
1935 tst.local.family = AF_UNIX;
1936 tst.remote.family = AF_UNIX;
1937 memcpy(tst.local.data, &s->name, sizeof(s->name));
1938 if (strcmp(peer, "*") == 0)
1939 memset(tst.remote.data, 0, sizeof(peer));
1941 memcpy(tst.remote.data, &peer, sizeof(peer));
1942 if (run_ssfilter(f->f, &tst) == 0)
1947 printf("%-*s ", netid_width,
1948 s->type == SOCK_STREAM ? "u_str" : "u_dgr");
1950 printf("%-*s ", state_width, sstate_name[s->state]);
1951 printf("%-6d %-6d ", s->rq, s->wq);
1952 printf("%*s %-*d %*s %-*d",
1953 addr_width, s->name ? : "*", serv_width, s->ino,
1954 addr_width, peer, serv_width, s->peer);
1957 if (find_users(s->ino, ubuf, sizeof(ubuf)) > 0)
1958 printf(" users:(%s)", ubuf);
1964 int unix_show(struct filter *f)
1971 struct unixstat *list = NULL;
1973 if ((fp = fdopen(net_unix_open(), "r")) == NULL)
1975 fgets(buf, sizeof(buf)-1, fp);
1977 if (memcmp(buf, "Peer", 4) == 0)
1981 while (fgets(buf, sizeof(buf)-1, fp)) {
1982 struct unixstat *u, **insp;
1985 if (!(u = malloc(sizeof(*u))))
1989 if (sscanf(buf, "%x: %x %x %x %x %x %d %s",
1990 &u->peer, &u->rq, &u->wq, &flags, &u->type,
1991 &u->state, &u->ino, name) < 8)
1994 if (flags&(1<<16)) {
1995 u->state = SS_LISTEN;
1997 u->state = unix_state_map[u->state-1];
1998 if (u->type == SOCK_DGRAM &&
1999 u->state == SS_CLOSE &&
2001 u->state = SS_ESTABLISHED;
2012 if (u->type < (*insp)->type ||
2013 (u->type == (*insp)->type &&
2014 u->ino < (*insp)->ino))
2016 insp = &(*insp)->next;
2022 if ((u->name = malloc(strlen(name)+1)) == NULL)
2024 strcpy(u->name, name);
2026 if (++cnt > MAX_UNIX_REMEMBER) {
2027 unix_list_print(list, f);
2028 unix_list_free(list);
2035 unix_list_print(list, f);
2036 unix_list_free(list);
2045 int packet_show(struct filter *f)
2056 unsigned long long sk;
2058 if (!(f->states & (1<<SS_CLOSE)))
2061 if ((fp = fdopen(net_packet_open(), "r")) == NULL)
2063 fgets(buf, sizeof(buf)-1, fp);
2065 while (fgets(buf, sizeof(buf)-1, fp)) {
2066 sscanf(buf, "%llx %*d %d %x %d %d %u %u %u",
2068 &type, &prot, &iface, &state,
2071 if (type == SOCK_RAW && !(f->dbs&(1<<PACKET_R_DB)))
2073 if (type == SOCK_DGRAM && !(f->dbs&(1<<PACKET_DG_DB)))
2077 tst.local.family = AF_PACKET;
2078 tst.remote.family = AF_PACKET;
2081 tst.local.data[0] = prot;
2082 tst.remote.data[0] = 0;
2083 if (run_ssfilter(f->f, &tst) == 0)
2088 printf("%-*s ", netid_width,
2089 type == SOCK_RAW ? "p_raw" : "p_dgr");
2091 printf("%-*s ", state_width, "UNCONN");
2092 printf("%-6d %-6d ", rq, 0);
2094 printf("%*s:", addr_width, "*");
2097 printf("%*s:", addr_width,
2098 ll_proto_n2a(htons(prot), tb, sizeof(tb)));
2101 printf("%-*s ", serv_width, "*");
2103 printf("%-*s ", serv_width, xll_index_to_name(iface));
2106 addr_width, "", serv_width, "");
2110 if (find_users(ino, ubuf, sizeof(ubuf)) > 0)
2111 printf(" users:(%s)", ubuf);
2114 printf(" ino=%u uid=%u sk=%llx", ino, uid, sk);
2122 int netlink_show(struct filter *f)
2129 unsigned long long sk, cb;
2131 if (!(f->states & (1<<SS_CLOSE)))
2134 if ((fp = fdopen(net_netlink_open(), "r")) == NULL)
2136 fgets(buf, sizeof(buf)-1, fp);
2138 while (fgets(buf, sizeof(buf)-1, fp)) {
2139 sscanf(buf, "%llx %d %d %x %d %d %llx %d",
2141 &prot, &pid, &groups, &rq, &wq, &cb, &rc);
2145 tst.local.family = AF_NETLINK;
2146 tst.remote.family = AF_NETLINK;
2149 tst.local.data[0] = prot;
2150 tst.remote.data[0] = 0;
2151 if (run_ssfilter(f->f, &tst) == 0)
2156 printf("%-*s ", netid_width, "nl");
2158 printf("%-*s ", state_width, "UNCONN");
2159 printf("%-6d %-6d ", rq, wq);
2160 if (resolve_services && prot == 0)
2161 printf("%*s:", addr_width, "rtnl");
2162 else if (resolve_services && prot == 3)
2163 printf("%*s:", addr_width, "fw");
2164 else if (resolve_services && prot == 4)
2165 printf("%*s:", addr_width, "tcpdiag");
2167 printf("%*d:", addr_width, prot);
2169 printf("%-*s ", serv_width, "*");
2170 } else if (resolve_services) {
2174 printf("%-*s ", serv_width, "kernel");
2175 } else if (pid > 0) {
2178 sprintf(procname, "%s/%d/stat",
2179 getenv("PROC_ROOT") ? : "/proc", pid);
2180 if ((fp = fopen(procname, "r")) != NULL) {
2181 if (fscanf(fp, "%*d (%[^)])", procname) == 1) {
2182 sprintf(procname+strlen(procname), "/%d", pid);
2183 printf("%-*s ", serv_width, procname);
2190 printf("%-*d ", serv_width, pid);
2192 printf("%-*d ", serv_width, pid);
2195 addr_width, "", serv_width, "");
2198 printf(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups);
2211 int get_snmp_int(char *proto, char *key, int *result)
2215 int protolen = strlen(proto);
2216 int keylen = strlen(key);
2220 if ((fp = fdopen(net_snmp_open(), "r")) == NULL)
2223 while (fgets(buf, sizeof(buf), fp) != NULL) {
2226 if (memcmp(buf, proto, protolen))
2228 while ((p = strchr(p, ' ')) != NULL) {
2231 if (memcmp(p, key, keylen) == 0 &&
2232 (p[keylen] == ' ' || p[keylen] == '\n'))
2235 if (fgets(buf, sizeof(buf), fp) == NULL)
2237 if (memcmp(buf, proto, protolen))
2240 while ((p = strchr(p, ' ')) != NULL) {
2243 sscanf(p, "%d", result);
2256 /* Get stats from sockstat */
2277 static void get_sockstat_line(char *line, struct sockstat *s)
2279 char id[256], rem[256];
2281 if (sscanf(line, "%[^ ] %[^\n]\n", id, rem) != 2)
2284 if (strcmp(id, "sockets:") == 0)
2285 sscanf(rem, "%*s%d", &s->socks);
2286 else if (strcmp(id, "UDP:") == 0)
2287 sscanf(rem, "%*s%d", &s->udp4);
2288 else if (strcmp(id, "UDP6:") == 0)
2289 sscanf(rem, "%*s%d", &s->udp6);
2290 else if (strcmp(id, "RAW:") == 0)
2291 sscanf(rem, "%*s%d", &s->raw4);
2292 else if (strcmp(id, "RAW6:") == 0)
2293 sscanf(rem, "%*s%d", &s->raw6);
2294 else if (strcmp(id, "TCP6:") == 0)
2295 sscanf(rem, "%*s%d", &s->tcp6_hashed);
2296 else if (strcmp(id, "FRAG:") == 0)
2297 sscanf(rem, "%*s%d%*s%d", &s->frag4, &s->frag4_mem);
2298 else if (strcmp(id, "FRAG6:") == 0)
2299 sscanf(rem, "%*s%d%*s%d", &s->frag6, &s->frag6_mem);
2300 else if (strcmp(id, "TCP:") == 0)
2301 sscanf(rem, "%*s%d%*s%d%*s%d%*s%d%*s%d",
2303 &s->tcp_orphans, &s->tcp_tws, &s->tcp_total, &s->tcp_mem);
2306 int get_sockstat(struct sockstat *s)
2311 memset(s, 0, sizeof(*s));
2313 if ((fp = fdopen(net_sockstat_open(), "r")) == NULL)
2315 while(fgets(buf, sizeof(buf), fp) != NULL)
2316 get_sockstat_line(buf, s);
2319 if ((fp = fdopen(net_sockstat6_open(), "r")) == NULL)
2321 while(fgets(buf, sizeof(buf), fp) != NULL)
2322 get_sockstat_line(buf, s);
2328 int print_summary(void)
2333 if (get_sockstat(&s) < 0)
2334 perror("ss: get_sockstat");
2335 if (get_snmp_int("Tcp:", "CurrEstab", &sn.tcp_estab) < 0)
2336 perror("ss: get_snmpstat");
2338 printf("Total: %d (kernel %d)\n", s.socks, slabstat.socks);
2340 printf("TCP: %d (estab %d, closed %d, orphaned %d, synrecv %d, timewait %d/%d), ports %d\n",
2341 s.tcp_total + slabstat.tcp_syns + s.tcp_tws,
2343 s.tcp_total - (s.tcp4_hashed+s.tcp6_hashed-s.tcp_tws),
2346 s.tcp_tws, slabstat.tcp_tws,
2351 printf("Transport Total IP IPv6\n");
2352 printf("* %-9d %-9s %-9s\n", slabstat.socks, "-", "-");
2353 printf("RAW %-9d %-9d %-9d\n", s.raw4+s.raw6, s.raw4, s.raw6);
2354 printf("UDP %-9d %-9d %-9d\n", s.udp4+s.udp6, s.udp4, s.udp6);
2355 printf("TCP %-9d %-9d %-9d\n", s.tcp4_hashed+s.tcp6_hashed, s.tcp4_hashed, s.tcp6_hashed);
2356 printf("INET %-9d %-9d %-9d\n",
2357 s.raw4+s.udp4+s.tcp4_hashed+
2358 s.raw6+s.udp6+s.tcp6_hashed,
2359 s.raw4+s.udp4+s.tcp4_hashed,
2360 s.raw6+s.udp6+s.tcp6_hashed);
2361 printf("FRAG %-9d %-9d %-9d\n", s.frag4+s.frag6, s.frag4, s.frag6);
2369 static void usage(void) __attribute__((noreturn));
2371 static void usage(void)
2374 "Usage: ss [ OPTIONS ]\n"
2375 " ss [ OPTIONS ] [ FILTER ]\n"
2376 " -h, --help this message\n"
2377 " -V, --version output version information\n"
2378 " -n, --numeric don't resolve service names\n"
2379 " -r, --resolve resolve host names\n"
2380 " -a, --all display all sockets\n"
2381 " -l, --listening display listening sockets\n"
2382 " -o, --options show timer information\n"
2383 " -e, --extended show detailed socket information\n"
2384 " -m, --memory show socket memory usage\n"
2385 " -p, --processes show process using socket\n"
2386 " -i, --info show internal TCP information\n"
2387 " -s, --summary show socket usage summary\n"
2389 " -4, --ipv4 display only IP version 4 sockets\n"
2390 " -6, --ipv6 display only IP version 6 sockets\n"
2391 " -0, --packet display PACKET sockets\n"
2392 " -t, --tcp display only TCP sockets\n"
2393 " -u, --udp display only UDP sockets\n"
2394 " -d, --dccp display only DCCP sockets\n"
2395 " -w, --raw display only RAW sockets\n"
2396 " -x, --unix display only Unix domain sockets\n"
2397 " -f, --family=FAMILY display sockets of type FAMILY\n"
2399 " -A, --query=QUERY\n"
2400 " QUERY := {all|inet|tcp|udp|raw|unix|packet|netlink}[,QUERY]\n"
2402 " -F, --filter=FILE read filter information from FILE\n"
2403 " FILTER := [ state TCP-STATE ] [ EXPRESSION ]\n"
2409 int scan_state(const char *state)
2412 if (strcasecmp(state, "close") == 0 ||
2413 strcasecmp(state, "closed") == 0)
2414 return (1<<SS_CLOSE);
2415 if (strcasecmp(state, "syn-rcv") == 0)
2416 return (1<<SS_SYN_RECV);
2417 if (strcasecmp(state, "established") == 0)
2418 return (1<<SS_ESTABLISHED);
2419 if (strcasecmp(state, "all") == 0)
2421 if (strcasecmp(state, "connected") == 0)
2422 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN));
2423 if (strcasecmp(state, "synchronized") == 0)
2424 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN)|(1<<SS_SYN_SENT));
2425 if (strcasecmp(state, "bucket") == 0)
2426 return (1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT);
2427 if (strcasecmp(state, "big") == 0)
2428 return SS_ALL & ~((1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT));
2429 for (i=0; i<SS_MAX; i++) {
2430 if (strcasecmp(state, sstate_namel[i]) == 0)
2436 static const struct option long_opts[] = {
2437 { "numeric", 0, 0, 'n' },
2438 { "resolve", 0, 0, 'r' },
2439 { "options", 0, 0, 'o' },
2440 { "extended", 0, 0, 'e' },
2441 { "memory", 0, 0, 'm' },
2442 { "info", 0, 0, 'i' },
2443 { "processes", 0, 0, 'p' },
2444 { "dccp", 0, 0, 'd' },
2445 { "tcp", 0, 0, 't' },
2446 { "udp", 0, 0, 'u' },
2447 { "raw", 0, 0, 'w' },
2448 { "unix", 0, 0, 'x' },
2449 { "all", 0, 0, 'a' },
2450 { "listening", 0, 0, 'l' },
2451 { "ipv4", 0, 0, '4' },
2452 { "ipv6", 0, 0, '6' },
2453 { "packet", 0, 0, '0' },
2454 { "family", 1, 0, 'f' },
2455 { "socket", 1, 0, 'A' },
2456 { "summary", 0, 0, 's' },
2457 { "diag", 0, 0, 'D' },
2458 { "filter", 1, 0, 'F' },
2459 { "version", 0, 0, 'V' },
2460 { "help", 0, 0, 'h' },
2465 int main(int argc, char *argv[])
2471 const char *dump_tcpdiag = NULL;
2472 FILE *filter_fp = NULL;
2475 memset(¤t_filter, 0, sizeof(current_filter));
2477 current_filter.states = default_filter.states;
2479 while ((ch = getopt_long(argc, argv, "dhaletuwxnro460spf:miA:D:F:vV",
2480 long_opts, NULL)) != EOF) {
2483 resolve_services = 0;
2505 current_filter.dbs |= (1<<DCCP_DB);
2509 current_filter.dbs |= (1<<TCP_DB);
2513 current_filter.dbs |= (1<<UDP_DB);
2517 current_filter.dbs |= (1<<RAW_DB);
2521 current_filter.dbs |= UNIX_DBM;
2525 current_filter.states = SS_ALL;
2528 current_filter.states = (1<<SS_LISTEN);
2531 preferred_family = AF_INET;
2534 preferred_family = AF_INET6;
2537 preferred_family = AF_PACKET;
2540 if (strcmp(optarg, "inet") == 0)
2541 preferred_family = AF_INET;
2542 else if (strcmp(optarg, "inet6") == 0)
2543 preferred_family = AF_INET6;
2544 else if (strcmp(optarg, "link") == 0)
2545 preferred_family = AF_PACKET;
2546 else if (strcmp(optarg, "unix") == 0)
2547 preferred_family = AF_UNIX;
2548 else if (strcmp(optarg, "netlink") == 0)
2549 preferred_family = AF_NETLINK;
2550 else if (strcmp(optarg, "help") == 0)
2553 fprintf(stderr, "ss: \"%s\" is invalid family\n", optarg);
2561 current_filter.dbs = 0;
2567 if ((p1 = strchr(p, ',')) != NULL)
2569 if (strcmp(p, "all") == 0) {
2570 current_filter.dbs = ALL_DB;
2571 } else if (strcmp(p, "inet") == 0) {
2572 current_filter.dbs |= (1<<TCP_DB)|(1<<DCCP_DB)|(1<<UDP_DB)|(1<<RAW_DB);
2573 } else if (strcmp(p, "udp") == 0) {
2574 current_filter.dbs |= (1<<UDP_DB);
2575 } else if (strcmp(p, "dccp") == 0) {
2576 current_filter.dbs |= (1<<DCCP_DB);
2577 } else if (strcmp(p, "tcp") == 0) {
2578 current_filter.dbs |= (1<<TCP_DB);
2579 } else if (strcmp(p, "raw") == 0) {
2580 current_filter.dbs |= (1<<RAW_DB);
2581 } else if (strcmp(p, "unix") == 0) {
2582 current_filter.dbs |= UNIX_DBM;
2583 } else if (strcasecmp(p, "unix_stream") == 0 ||
2584 strcmp(p, "u_str") == 0) {
2585 current_filter.dbs |= (1<<UNIX_ST_DB);
2586 } else if (strcasecmp(p, "unix_dgram") == 0 ||
2587 strcmp(p, "u_dgr") == 0) {
2588 current_filter.dbs |= (1<<UNIX_DG_DB);
2589 } else if (strcmp(p, "packet") == 0) {
2590 current_filter.dbs |= PACKET_DBM;
2591 } else if (strcmp(p, "packet_raw") == 0 ||
2592 strcmp(p, "p_raw") == 0) {
2593 current_filter.dbs |= (1<<PACKET_R_DB);
2594 } else if (strcmp(p, "packet_dgram") == 0 ||
2595 strcmp(p, "p_dgr") == 0) {
2596 current_filter.dbs |= (1<<PACKET_DG_DB);
2597 } else if (strcmp(p, "netlink") == 0) {
2598 current_filter.dbs |= (1<<NETLINK_DB);
2600 fprintf(stderr, "ss: \"%s\" is illegal socket table id\n", p);
2611 dump_tcpdiag = optarg;
2615 fprintf(stderr, "More than one filter file\n");
2618 if (optarg[0] == '-')
2621 filter_fp = fopen(optarg, "r");
2623 perror("fopen filter file");
2629 printf("ss utility, iproute2-ss%s\n", SNAPSHOT);
2641 get_slabstat(&slabstat);
2645 if (do_default && argc == 0)
2650 current_filter.dbs = default_filter.dbs;
2652 if (preferred_family == AF_UNSPEC) {
2653 if (!(current_filter.dbs&~UNIX_DBM))
2654 preferred_family = AF_UNIX;
2655 else if (!(current_filter.dbs&~PACKET_DBM))
2656 preferred_family = AF_PACKET;
2657 else if (!(current_filter.dbs&~(1<<NETLINK_DB)))
2658 preferred_family = AF_NETLINK;
2661 if (preferred_family != AF_UNSPEC) {
2663 if (preferred_family == AF_INET ||
2664 preferred_family == AF_INET6) {
2667 mask2 = (1<<UDP_DB)|(1<<RAW_DB);
2668 } else if (preferred_family == AF_PACKET) {
2670 } else if (preferred_family == AF_UNIX) {
2672 } else if (preferred_family == AF_NETLINK) {
2673 mask2 = (1<<NETLINK_DB);
2679 current_filter.dbs = mask2;
2681 current_filter.dbs &= mask2;
2682 current_filter.families = (1<<preferred_family);
2685 current_filter.families = ~0;
2687 current_filter.families = default_filter.families;
2689 if (current_filter.dbs == 0) {
2690 fprintf(stderr, "ss: no socket tables to show with such filter.\n");
2693 if (current_filter.families == 0) {
2694 fprintf(stderr, "ss: no families to show with such filter.\n");
2698 if (resolve_services && resolve_hosts &&
2699 (current_filter.dbs&(UNIX_DBM|(1<<TCP_DB)|(1<<UDP_DB)|(1<<DCCP_DB))))
2700 init_service_resolver();
2702 /* Now parse filter... */
2703 if (argc == 0 && filter_fp) {
2704 if (ssfilter_parse(¤t_filter.f, 0, NULL, filter_fp))
2709 if (strcmp(*argv, "state") == 0) {
2712 current_filter.states = 0;
2713 current_filter.states |= scan_state(*argv);
2715 } else if (strcmp(*argv, "exclude") == 0 ||
2716 strcmp(*argv, "excl") == 0) {
2719 current_filter.states = SS_ALL;
2720 current_filter.states &= ~scan_state(*argv);
2723 if (ssfilter_parse(¤t_filter.f, argc, argv, filter_fp))
2730 if (current_filter.states == 0) {
2731 fprintf(stderr, "ss: no socket states to show with such filter.\n");
2736 FILE *dump_fp = stdout;
2737 if (!(current_filter.dbs & (1<<TCP_DB))) {
2738 fprintf(stderr, "ss: tcpdiag dump requested and no tcp in filter.\n");
2741 if (dump_tcpdiag[0] != '-') {
2742 dump_fp = fopen(dump_tcpdiag, "w");
2743 if (!dump_tcpdiag) {
2744 perror("fopen dump file");
2748 tcp_show_netlink(¤t_filter, dump_fp, TCPDIAG_GETSOCK);
2754 if (current_filter.dbs&(current_filter.dbs-1))
2758 if (current_filter.states&(current_filter.states-1))
2762 if (isatty(STDOUT_FILENO)) {
2765 if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != -1) {
2767 screen_width = w.ws_col;
2771 addrp_width = screen_width;
2772 addrp_width -= netid_width+1;
2773 addrp_width -= state_width+1;
2776 if (addrp_width&1) {
2779 else if (state_width)
2786 serv_width = resolve_services ? 7 : 5;
2788 if (addrp_width < 15+serv_width+1)
2789 addrp_width = 15+serv_width+1;
2791 addr_width = addrp_width - serv_width - 1;
2794 printf("%-*s ", netid_width, "Netid");
2796 printf("%-*s ", state_width, "State");
2797 printf("%-6s %-6s ", "Recv-Q", "Send-Q");
2799 printf("%*s:%-*s %*s:%-*s\n",
2800 addr_width, "Local Address", serv_width, "Port",
2801 addr_width, "Peer Address", serv_width, "Port");
2803 //printf("%08x %08x %08x\n", current_filter.dbs, current_filter.states, current_filter.families);
2806 if (current_filter.dbs & (1<<NETLINK_DB))
2807 netlink_show(¤t_filter);
2808 if (current_filter.dbs & PACKET_DBM)
2809 packet_show(¤t_filter);
2810 if (current_filter.dbs & UNIX_DBM)
2811 unix_show(¤t_filter);
2812 if (current_filter.dbs & (1<<RAW_DB))
2813 raw_show(¤t_filter);
2814 if (current_filter.dbs & (1<<UDP_DB))
2815 udp_show(¤t_filter);
2816 if (current_filter.dbs & (1<<TCP_DB))
2817 tcp_show(¤t_filter, TCPDIAG_GETSOCK);
2818 if (current_filter.dbs & (1<<DCCP_DB))
2819 tcp_show(¤t_filter, DCCPDIAG_GETSOCK);