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 <netinet/tcp.h>
37 #include <linux/inet_diag.h>
39 int resolve_hosts = 0;
40 int resolve_services = 1;
41 int preferred_family = AF_UNSPEC;
55 static const char *TCP_PROTO = "tcp";
56 static const char *UDP_PROTO = "udp";
57 static const char *RAW_PROTO = "raw";
58 static const char *dg_proto = NULL;
74 #define PACKET_DBM ((1<<PACKET_DG_DB)|(1<<PACKET_R_DB))
75 #define UNIX_DBM ((1<<UNIX_DG_DB)|(1<<UNIX_ST_DB))
76 #define ALL_DB ((1<<MAX_DB)-1)
94 #define SS_ALL ((1<<SS_MAX)-1)
106 struct filter default_filter = {
108 .states = SS_ALL & ~((1<<SS_LISTEN)|(1<<SS_CLOSE)|(1<<SS_TIME_WAIT)|(1<<SS_SYN_RECV)),
109 .families= (1<<AF_INET)|(1<<AF_INET6),
112 struct filter current_filter;
114 static FILE *generic_proc_open(const char *env, const char *name)
116 const char *p = getenv(env);
120 p = getenv("PROC_ROOT") ? : "/proc";
121 snprintf(store, sizeof(store)-1, "%s/%s", p, name);
125 return fopen(p, "r");
128 static FILE *net_tcp_open(void)
130 return generic_proc_open("PROC_NET_TCP", "net/tcp");
133 static FILE *net_tcp6_open(void)
135 return generic_proc_open("PROC_NET_TCP6", "net/tcp6");
138 static FILE *net_udp_open(void)
140 return generic_proc_open("PROC_NET_UDP", "net/udp");
143 static FILE *net_udp6_open(void)
145 return generic_proc_open("PROC_NET_UDP6", "net/udp6");
148 static FILE *net_raw_open(void)
150 return generic_proc_open("PROC_NET_RAW", "net/raw");
153 static FILE *net_raw6_open(void)
155 return generic_proc_open("PROC_NET_RAW6", "net/raw6");
158 static FILE *net_unix_open(void)
160 return generic_proc_open("PROC_NET_UNIX", "net/unix");
163 static FILE *net_packet_open(void)
165 return generic_proc_open("PROC_NET_PACKET", "net/packet");
168 static FILE *net_netlink_open(void)
170 return generic_proc_open("PROC_NET_NETLINK", "net/netlink");
173 static FILE *slabinfo_open(void)
175 return generic_proc_open("PROC_SLABINFO", "slabinfo");
178 static FILE *net_sockstat_open(void)
180 return generic_proc_open("PROC_NET_SOCKSTAT", "net/sockstat");
183 static FILE *net_sockstat6_open(void)
185 return generic_proc_open("PROC_NET_SOCKSTAT6", "net/sockstat6");
188 static FILE *net_snmp_open(void)
190 return generic_proc_open("PROC_NET_SNMP", "net/snmp");
193 static FILE *ephemeral_ports_open(void)
195 return generic_proc_open("PROC_IP_LOCAL_PORT_RANGE", "sys/net/ipv4/ip_local_port_range");
199 struct user_ent *next;
206 #define USER_ENT_HASH_SIZE 256
207 struct user_ent *user_ent_hash[USER_ENT_HASH_SIZE];
209 static int user_ent_hashfn(unsigned int ino)
211 int val = (ino >> 24) ^ (ino >> 16) ^ (ino >> 8) ^ ino;
213 return val & (USER_ENT_HASH_SIZE - 1);
216 static void user_ent_add(unsigned int ino, const char *process, int pid, int fd)
218 struct user_ent *p, **pp;
221 str_len = strlen(process) + 1;
222 p = malloc(sizeof(struct user_ent) + str_len);
229 strcpy(p->process, process);
231 pp = &user_ent_hash[user_ent_hashfn(ino)];
236 static void user_ent_hash_build(void)
238 const char *root = getenv("PROC_ROOT") ? : "/proc/";
245 if (strlen(name) == 0 || name[strlen(name)-1] != '/')
248 nameoff = strlen(name);
254 while ((d = readdir(dir)) != NULL) {
261 if (sscanf(d->d_name, "%d%c", &pid, &crap) != 1)
264 sprintf(name + nameoff, "%d/fd/", pid);
266 if ((dir1 = opendir(name)) == NULL)
271 while ((d1 = readdir(dir1)) != NULL) {
272 const char *pattern = "socket:[";
277 if (sscanf(d1->d_name, "%d%c", &fd, &crap) != 1)
280 sprintf(name+pos, "%d", fd);
281 if (readlink(name, lnk, sizeof(lnk)-1) < 0 ||
282 strncmp(lnk, pattern, strlen(pattern)))
285 sscanf(lnk, "socket:[%u]", &ino);
287 if (process[0] == '\0') {
291 snprintf(tmp, sizeof(tmp), "%s/%d/stat", root, pid);
292 if ((fp = fopen(tmp, "r")) != NULL) {
293 fscanf(fp, "%*d (%[^)])", process);
298 user_ent_add(ino, process, pid, fd);
305 int find_users(unsigned ino, char *buf, int buflen)
314 p = user_ent_hash[user_ent_hashfn(ino)];
320 if (ptr - buf >= buflen - 1)
323 snprintf(ptr, buflen - (ptr - buf),
325 p->process, p->pid, p->fd);
339 /* Get stats from slab */
350 struct slabstat slabstat;
352 static const char *slabstat_ids[] =
361 int get_slabstat(struct slabstat *s)
367 memset(s, 0, sizeof(*s));
369 fp = slabinfo_open();
373 cnt = sizeof(*s)/sizeof(int);
375 fgets(buf, sizeof(buf), fp);
376 while(fgets(buf, sizeof(buf), fp) != NULL) {
378 for (i=0; i<sizeof(slabstat_ids)/sizeof(slabstat_ids[0]); i++) {
379 if (memcmp(buf, slabstat_ids[i], strlen(slabstat_ids[i])) == 0) {
380 sscanf(buf, "%*s%d", ((int *)s) + i);
393 static const char *sstate_name[] = {
395 [TCP_ESTABLISHED] = "ESTAB",
396 [TCP_SYN_SENT] = "SYN-SENT",
397 [TCP_SYN_RECV] = "SYN-RECV",
398 [TCP_FIN_WAIT1] = "FIN-WAIT-1",
399 [TCP_FIN_WAIT2] = "FIN-WAIT-2",
400 [TCP_TIME_WAIT] = "TIME-WAIT",
401 [TCP_CLOSE] = "UNCONN",
402 [TCP_CLOSE_WAIT] = "CLOSE-WAIT",
403 [TCP_LAST_ACK] = "LAST-ACK",
404 [TCP_LISTEN] = "LISTEN",
405 [TCP_CLOSING] = "CLOSING",
408 static const char *sstate_namel[] = {
410 [TCP_ESTABLISHED] = "established",
411 [TCP_SYN_SENT] = "syn-sent",
412 [TCP_SYN_RECV] = "syn-recv",
413 [TCP_FIN_WAIT1] = "fin-wait-1",
414 [TCP_FIN_WAIT2] = "fin-wait-2",
415 [TCP_TIME_WAIT] = "time-wait",
416 [TCP_CLOSE] = "unconnected",
417 [TCP_CLOSE_WAIT] = "close-wait",
418 [TCP_LAST_ACK] = "last-ack",
419 [TCP_LISTEN] = "listening",
420 [TCP_CLOSING] = "closing",
438 unsigned long long sk;
439 int rto, ato, qack, cwnd, ssthresh;
442 static const char *tmr_name[] = {
451 const char *print_ms_timer(int timeout)
454 int secs, msecs, minutes;
460 msecs = timeout%1000;
464 snprintf(buf, sizeof(buf)-16, "%dmin", minutes);
471 sprintf(buf+strlen(buf), "%d%s", secs, msecs ? "." : "sec");
474 sprintf(buf+strlen(buf), "%03dms", msecs);
478 const char *print_hz_timer(int timeout)
480 int hz = get_user_hz();
481 return print_ms_timer(((timeout*1000) + hz-1)/hz);
492 struct scache *rlist;
494 void init_service_resolver(void)
497 FILE *fp = popen("/usr/sbin/rpcinfo -p 2>/dev/null", "r");
499 fgets(buf, sizeof(buf), fp);
500 while (fgets(buf, sizeof(buf), fp) != NULL) {
501 unsigned int progn, port;
502 char proto[128], prog[128];
503 if (sscanf(buf, "%u %*d %s %u %s", &progn, proto,
504 &port, prog+4) == 4) {
505 struct scache *c = malloc(sizeof(*c));
508 memcpy(prog, "rpc.", 4);
509 c->name = strdup(prog);
510 if (strcmp(proto, TCP_PROTO) == 0)
511 c->proto = TCP_PROTO;
512 else if (strcmp(proto, UDP_PROTO) == 0)
513 c->proto = UDP_PROTO;
524 static int ip_local_port_min, ip_local_port_max;
526 /* Even do not try default linux ephemeral port ranges:
527 * default /etc/services contains so much of useless crap
528 * wouldbe "allocated" to this area that resolution
529 * is really harmful. I shrug each time when seeing
530 * "socks" or "cfinger" in dumps.
532 static int is_ephemeral(int port)
534 if (!ip_local_port_min) {
535 FILE *f = ephemeral_ports_open();
538 &ip_local_port_min, &ip_local_port_max);
541 ip_local_port_min = 1024;
542 ip_local_port_max = 4999;
546 return (port >= ip_local_port_min && port<= ip_local_port_max);
550 const char *__resolve_service(int port)
554 for (c = rlist; c; c = c->next) {
555 if (c->port == port && c->proto == dg_proto)
559 if (!is_ephemeral(port)) {
566 se = getservbyport(htons(port), dg_proto);
575 const char *resolve_service(int port)
577 static char buf[128];
578 static struct scache cache[256];
586 if (resolve_services) {
587 if (dg_proto == RAW_PROTO) {
588 return inet_proto_n2a(port, buf, sizeof(buf));
592 int hash = (port^(((unsigned long)dg_proto)>>2))&255;
594 for (c = &cache[hash]; c; c = c->next) {
595 if (c->port == port &&
596 c->proto == dg_proto) {
603 if ((res = __resolve_service(port)) != NULL) {
604 if ((c = malloc(sizeof(*c))) == NULL)
615 c->name = strdup(res);
616 c->next = cache[hash].next;
617 cache[hash].next = c;
625 sprintf(buf, "%u", port);
629 void formatted_print(const inet_prefix *a, int port)
632 const char *ap = buf;
635 est_len = addr_width;
637 if (a->family == AF_INET) {
638 if (a->data[0] == 0) {
642 ap = format_host(AF_INET, 4, a->data, buf, sizeof(buf));
645 ap = format_host(a->family, 16, a->data, buf, sizeof(buf));
646 est_len = strlen(ap);
647 if (est_len <= addr_width)
648 est_len = addr_width;
650 est_len = addr_width + ((est_len-addr_width+3)/4)*4;
652 printf("%*s:%-*s ", est_len, ap, serv_width, resolve_service(port));
659 struct aafilter *next;
662 int inet2_addr_match(const inet_prefix *a, const inet_prefix *p, int plen)
664 if (!inet_addr_match(a, p, plen))
667 /* Cursed "v4 mapped" addresses: v4 mapped socket matches
668 * pure IPv4 rule, but v4-mapped rule selects only v4-mapped
670 if (p->family == AF_INET && a->family == AF_INET6) {
671 if (a->data[0] == 0 && a->data[1] == 0 &&
672 a->data[2] == htonl(0xffff)) {
673 inet_prefix tmp = *a;
674 tmp.data[0] = a->data[3];
675 return inet_addr_match(&tmp, p, plen);
681 int unix_match(const inet_prefix *a, const inet_prefix *p)
683 char *addr, *pattern;
684 memcpy(&addr, a->data, sizeof(addr));
685 memcpy(&pattern, p->data, sizeof(pattern));
690 return !fnmatch(pattern, addr, 0);
693 int run_ssfilter(struct ssfilter *f, struct tcpstat *s)
698 static int low, high=65535;
700 if (s->local.family == AF_UNIX) {
702 memcpy(&p, s->local.data, sizeof(p));
703 return p == NULL || (p[0] == '@' && strlen(p) == 6 &&
704 strspn(p+1, "0123456789abcdef") == 5);
706 if (s->local.family == AF_PACKET)
707 return s->lport == 0 && s->local.data == 0;
708 if (s->local.family == AF_NETLINK)
712 FILE *fp = ephemeral_ports_open();
714 fscanf(fp, "%d%d", &low, &high);
718 return s->lport >= low && s->lport <= high;
722 struct aafilter *a = (void*)f->pred;
723 if (a->addr.family == AF_UNIX)
724 return unix_match(&s->remote, &a->addr);
725 if (a->port != -1 && a->port != s->rport)
727 if (a->addr.bitlen) {
729 if (!inet2_addr_match(&s->remote, &a->addr, a->addr.bitlen))
731 } while ((a = a->next) != NULL);
738 struct aafilter *a = (void*)f->pred;
739 if (a->addr.family == AF_UNIX)
740 return unix_match(&s->local, &a->addr);
741 if (a->port != -1 && a->port != s->lport)
743 if (a->addr.bitlen) {
745 if (!inet2_addr_match(&s->local, &a->addr, a->addr.bitlen))
747 } while ((a = a->next) != NULL);
754 struct aafilter *a = (void*)f->pred;
755 return s->rport >= a->port;
759 struct aafilter *a = (void*)f->pred;
760 return s->rport <= a->port;
764 struct aafilter *a = (void*)f->pred;
765 return s->lport >= a->port;
769 struct aafilter *a = (void*)f->pred;
770 return s->lport <= a->port;
773 /* Yup. It is recursion. Sorry. */
775 return run_ssfilter(f->pred, s) && run_ssfilter(f->post, s);
777 return run_ssfilter(f->pred, s) || run_ssfilter(f->post, s);
779 return !run_ssfilter(f->pred, s);
785 /* Relocate external jumps by reloc. */
786 static void ssfilter_patch(char *a, int len, int reloc)
789 struct inet_diag_bc_op *op = (struct inet_diag_bc_op*)a;
799 static int ssfilter_bytecompile(struct ssfilter *f, char **bytecode)
804 if (!(*bytecode=malloc(4))) abort();
805 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_AUTO, 4, 8 };
811 struct aafilter *a = (void*)f->pred;
814 int code = (f->type == SSF_DCOND ? INET_DIAG_BC_D_COND : INET_DIAG_BC_S_COND);
817 for (b=a; b; b=b->next) {
818 len += 4 + sizeof(struct inet_diag_hostcond);
819 if (a->addr.family == AF_INET6)
826 if (!(ptr = malloc(len))) abort();
828 for (b=a; b; b=b->next) {
829 struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)ptr;
830 int alen = (a->addr.family == AF_INET6 ? 16 : 4);
831 int oplen = alen + 4 + sizeof(struct inet_diag_hostcond);
832 struct inet_diag_hostcond *cond = (struct inet_diag_hostcond*)(ptr+4);
834 *op = (struct inet_diag_bc_op){ code, oplen, oplen+4 };
835 cond->family = a->addr.family;
836 cond->port = a->port;
837 cond->prefix_len = a->addr.bitlen;
838 memcpy(cond->addr, a->addr.data, alen);
841 op = (struct inet_diag_bc_op *)ptr;
842 *op = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, len - (ptr-*bytecode)};
846 return ptr - *bytecode;
850 struct aafilter *x = (void*)f->pred;
851 if (!(*bytecode=malloc(8))) abort();
852 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_GE, 8, 12 };
853 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
858 struct aafilter *x = (void*)f->pred;
859 if (!(*bytecode=malloc(8))) abort();
860 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_LE, 8, 12 };
861 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
866 struct aafilter *x = (void*)f->pred;
867 if (!(*bytecode=malloc(8))) abort();
868 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_GE, 8, 12 };
869 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
874 struct aafilter *x = (void*)f->pred;
875 if (!(*bytecode=malloc(8))) abort();
876 ((struct inet_diag_bc_op*)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_LE, 8, 12 };
877 ((struct inet_diag_bc_op*)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
883 char *a1, *a2, *a, l1, l2;
884 l1 = ssfilter_bytecompile(f->pred, &a1);
885 l2 = ssfilter_bytecompile(f->post, &a2);
886 if (!(a = malloc(l1+l2))) abort();
888 memcpy(a+l1, a2, l2);
890 ssfilter_patch(a, l1, l2);
896 char *a1, *a2, *a, l1, l2;
897 l1 = ssfilter_bytecompile(f->pred, &a1);
898 l2 = ssfilter_bytecompile(f->post, &a2);
899 if (!(a = malloc(l1+l2+4))) abort();
901 memcpy(a+l1+4, a2, l2);
903 *(struct inet_diag_bc_op*)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, l2+4 };
910 l1 = ssfilter_bytecompile(f->pred, &a1);
911 if (!(a = malloc(l1+4))) abort();
914 *(struct inet_diag_bc_op*)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, 8 };
923 static int remember_he(struct aafilter *a, struct hostent *he)
925 char **ptr = he->h_addr_list;
929 if (he->h_addrtype == AF_INET)
931 else if (he->h_addrtype == AF_INET6)
937 struct aafilter *b = a;
938 if (a->addr.bitlen) {
939 if ((b = malloc(sizeof(*b))) == NULL)
945 memcpy(b->addr.data, *ptr, len);
946 b->addr.bytelen = len;
947 b->addr.bitlen = len*8;
948 b->addr.family = he->h_addrtype;
955 static int get_dns_host(struct aafilter *a, const char *addr, int fam)
966 he = gethostbyname2(addr, fam == AF_UNSPEC ? AF_INET : fam);
968 cnt = remember_he(a, he);
969 if (fam == AF_UNSPEC) {
970 he = gethostbyname2(addr, AF_INET6);
972 cnt += remember_he(a, he);
977 static int xll_initted = 0;
979 static void xll_init(void)
981 struct rtnl_handle rth;
988 static const char *xll_index_to_name(int index)
992 return ll_index_to_name(index);
995 static int xll_name_to_index(const char *dev)
999 return ll_name_to_index(dev);
1002 void *parse_hostcond(char *addr)
1006 struct aafilter *res;
1007 int fam = preferred_family;
1009 memset(&a, 0, sizeof(a));
1012 if (fam == AF_UNIX || strncmp(addr, "unix:", 5) == 0) {
1014 a.addr.family = AF_UNIX;
1015 if (strncmp(addr, "unix:", 5) == 0)
1018 a.addr.bitlen = 8*strlen(p);
1019 memcpy(a.addr.data, &p, sizeof(p));
1023 if (fam == AF_PACKET || strncmp(addr, "link:", 5) == 0) {
1024 a.addr.family = AF_PACKET;
1026 if (strncmp(addr, "link:", 5) == 0)
1028 port = strchr(addr, ':');
1031 if (port[1] && strcmp(port+1, "*")) {
1032 if (get_integer(&a.port, port+1, 0)) {
1033 if ((a.port = xll_name_to_index(port+1)) <= 0)
1038 if (addr[0] && strcmp(addr, "*")) {
1041 if (ll_proto_a2n(&tmp, addr))
1043 a.addr.data[0] = ntohs(tmp);
1048 if (fam == AF_NETLINK || strncmp(addr, "netlink:", 8) == 0) {
1049 a.addr.family = AF_NETLINK;
1051 if (strncmp(addr, "netlink:", 8) == 0)
1053 port = strchr(addr, ':');
1056 if (port[1] && strcmp(port+1, "*")) {
1057 if (get_integer(&a.port, port+1, 0)) {
1058 if (strcmp(port+1, "kernel") == 0)
1065 if (addr[0] && strcmp(addr, "*")) {
1067 if (get_u32(a.addr.data, addr, 0)) {
1068 if (strcmp(addr, "rtnl") == 0)
1070 else if (strcmp(addr, "fw") == 0)
1072 else if (strcmp(addr, "tcpdiag") == 0)
1081 if (strncmp(addr, "inet:", 5) == 0) {
1084 } else if (strncmp(addr, "inet6:", 6) == 0) {
1089 /* URL-like literal [] */
1090 if (addr[0] == '[') {
1092 if ((port = strchr(addr, ']')) == NULL)
1095 } else if (addr[0] == '*') {
1098 port = strrchr(strchr(addr, '/') ? : addr, ':');
1100 if (port && *port) {
1104 if (*port && *port != '*') {
1105 if (get_integer(&a.port, port, 0)) {
1106 struct servent *se1 = NULL;
1107 struct servent *se2 = NULL;
1108 if (current_filter.dbs&(1<<UDP_DB))
1109 se1 = getservbyname(port, UDP_PROTO);
1110 if (current_filter.dbs&(1<<TCP_DB))
1111 se2 = getservbyname(port, TCP_PROTO);
1112 if (se1 && se2 && se1->s_port != se2->s_port) {
1113 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1119 a.port = ntohs(se1->s_port);
1122 for (s = rlist; s; s = s->next) {
1123 if ((s->proto == UDP_PROTO &&
1124 (current_filter.dbs&(1<<UDP_DB))) ||
1125 (s->proto == TCP_PROTO &&
1126 (current_filter.dbs&(1<<TCP_DB)))) {
1127 if (s->name && strcmp(s->name, port) == 0) {
1128 if (a.port > 0 && a.port != s->port) {
1129 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
1137 fprintf(stderr, "Error: \"%s\" does not look like a port.\n", port);
1144 if (addr && *addr && *addr != '*') {
1145 if (get_prefix_1(&a.addr, addr, fam)) {
1146 if (get_dns_host(&a, addr, fam)) {
1147 fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", addr);
1154 res = malloc(sizeof(*res));
1156 memcpy(res, &a, sizeof(a));
1160 static int tcp_show_line(char *line, const struct filter *f, int family)
1163 char *loc, *rem, *data;
1168 if ((p = strchr(line, ':')) == NULL)
1172 if ((p = strchr(loc, ':')) == NULL)
1177 if ((p = strchr(rem, ':')) == NULL)
1183 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
1185 if (!(f->states & (1<<state)))
1189 s.local.family = s.remote.family = family;
1190 if (family == AF_INET) {
1191 sscanf(loc, "%x:%x", s.local.data, (unsigned*)&s.lport);
1192 sscanf(rem, "%x:%x", s.remote.data, (unsigned*)&s.rport);
1193 s.local.bytelen = s.remote.bytelen = 4;
1195 sscanf(loc, "%08x%08x%08x%08x:%x",
1201 sscanf(rem, "%08x%08x%08x%08x:%x",
1207 s.local.bytelen = s.remote.bytelen = 16;
1210 if (f->f && run_ssfilter(f->f, &s) == 0)
1214 n = sscanf(data, "%x %x:%x %x:%x %x %d %d %u %d %llx %d %d %d %d %d %[^\n]\n",
1215 &s.state, &s.wq, &s.rq,
1216 &s.timer, &s.timeout, &s.retrs, &s.uid, &s.probes, &s.ino,
1217 &s.refcnt, &s.sk, &s.rto, &s.ato, &s.qack,
1218 &s.cwnd, &s.ssthresh, opt);
1231 printf("%-*s ", netid_width, "tcp");
1233 printf("%-*s ", state_width, sstate_name[s.state]);
1235 printf("%-6d %-6d ", s.rq, s.wq);
1237 formatted_print(&s.local, s.lport);
1238 formatted_print(&s.remote, s.rport);
1244 printf(" timer:(%s,%s,%d)",
1246 print_hz_timer(s.timeout),
1247 s.timer != 1 ? s.probes : s.retrs);
1251 int hz = get_user_hz();
1252 if (s.rto && s.rto != 3*hz)
1253 printf(" rto:%g", (double)s.rto/hz);
1255 printf(" ato:%g", (double)s.ato/hz);
1257 printf(" cwnd:%d", s.cwnd);
1258 if (s.ssthresh != -1)
1259 printf(" ssthresh:%d", s.ssthresh);
1261 printf(" qack:%d", s.qack/2);
1267 if (find_users(s.ino, ubuf, sizeof(ubuf)) > 0)
1268 printf(" users:(%s)", ubuf);
1272 printf(" uid:%u", (unsigned)s.uid);
1273 printf(" ino:%u", s.ino);
1274 printf(" sk:%llx", s.sk);
1276 printf(" opt:\"%s\"", opt);
1283 static int generic_record_read(FILE *fp,
1284 int (*worker)(char*, const struct filter *, int),
1285 const struct filter *f, int fam)
1290 if (fgets(line, sizeof(line), fp) == NULL)
1293 while (fgets(line, sizeof(line), fp) != NULL) {
1294 int n = strlen(line);
1295 if (n == 0 || line[n-1] != '\n') {
1301 if (worker(line, f, fam) < 0)
1306 return ferror(fp) ? -1 : 0;
1309 static char *sprint_bw(char *buf, double bw)
1312 sprintf(buf,"%.1fM", bw / 1000000.);
1313 else if (bw > 1000.)
1314 sprintf(buf,"%.1fK", bw / 1000.);
1316 sprintf(buf, "%g", bw);
1321 static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r)
1323 struct rtattr * tb[INET_DIAG_MAX+1];
1327 parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr*)(r+1),
1328 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
1330 if (tb[INET_DIAG_MEMINFO]) {
1331 const struct inet_diag_meminfo *minfo
1332 = RTA_DATA(tb[INET_DIAG_MEMINFO]);
1333 printf(" mem:(r%u,w%u,f%u,t%u)",
1340 if (tb[INET_DIAG_INFO]) {
1341 struct tcp_info *info;
1342 int len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
1344 /* workaround for older kernels with less fields */
1345 if (len < sizeof(*info)) {
1346 info = alloca(sizeof(*info));
1347 memset(info, 0, sizeof(*info));
1348 memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
1350 info = RTA_DATA(tb[INET_DIAG_INFO]);
1353 if (info->tcpi_options & TCPI_OPT_TIMESTAMPS)
1355 if (info->tcpi_options & TCPI_OPT_SACK)
1357 if (info->tcpi_options & TCPI_OPT_ECN)
1361 if (tb[INET_DIAG_CONG])
1362 printf(" %s", (char *) RTA_DATA(tb[INET_DIAG_CONG]));
1364 if (info->tcpi_options & TCPI_OPT_WSCALE)
1365 printf(" wscale:%d,%d", info->tcpi_snd_wscale,
1366 info->tcpi_rcv_wscale);
1367 if (info->tcpi_rto && info->tcpi_rto != 3000000)
1368 printf(" rto:%g", (double)info->tcpi_rto/1000);
1370 printf(" rtt:%g/%g", (double)info->tcpi_rtt/1000,
1371 (double)info->tcpi_rttvar/1000);
1373 printf(" ato:%g", (double)info->tcpi_ato/1000);
1374 if (info->tcpi_snd_cwnd != 2)
1375 printf(" cwnd:%d", info->tcpi_snd_cwnd);
1376 if (info->tcpi_snd_ssthresh < 0xFFFF)
1377 printf(" ssthresh:%d", info->tcpi_snd_ssthresh);
1379 rtt = (double) info->tcpi_rtt;
1380 if (tb[INET_DIAG_VEGASINFO]) {
1381 const struct tcpvegas_info *vinfo
1382 = RTA_DATA(tb[INET_DIAG_VEGASINFO]);
1384 if (vinfo->tcpv_enabled &&
1385 vinfo->tcpv_rtt && vinfo->tcpv_rtt != 0x7fffffff)
1386 rtt = vinfo->tcpv_rtt;
1389 if (rtt > 0 && info->tcpi_snd_mss && info->tcpi_snd_cwnd) {
1390 printf(" send %sbps",
1391 sprint_bw(b1, (double) info->tcpi_snd_cwnd *
1392 (double) info->tcpi_snd_mss * 8000000.
1396 if (info->tcpi_rcv_rtt)
1397 printf(" rcv_rtt:%g", (double) info->tcpi_rcv_rtt/1000);
1398 if (info->tcpi_rcv_space)
1399 printf(" rcv_space:%d", info->tcpi_rcv_space);
1404 static int tcp_show_sock(struct nlmsghdr *nlh, struct filter *f)
1406 struct inet_diag_msg *r = NLMSG_DATA(nlh);
1409 s.state = r->idiag_state;
1410 s.local.family = s.remote.family = r->idiag_family;
1411 s.lport = ntohs(r->id.idiag_sport);
1412 s.rport = ntohs(r->id.idiag_dport);
1413 if (s.local.family == AF_INET) {
1414 s.local.bytelen = s.remote.bytelen = 4;
1416 s.local.bytelen = s.remote.bytelen = 16;
1418 memcpy(s.local.data, r->id.idiag_src, s.local.bytelen);
1419 memcpy(s.remote.data, r->id.idiag_dst, s.local.bytelen);
1421 if (f && f->f && run_ssfilter(f->f, &s) == 0)
1425 printf("%-*s ", netid_width, "tcp");
1427 printf("%-*s ", state_width, sstate_name[s.state]);
1429 printf("%-6d %-6d ", r->idiag_rqueue, r->idiag_wqueue);
1431 formatted_print(&s.local, s.lport);
1432 formatted_print(&s.remote, s.rport);
1435 if (r->idiag_timer) {
1436 if (r->idiag_timer > 4)
1438 printf(" timer:(%s,%s,%d)",
1439 tmr_name[r->idiag_timer],
1440 print_ms_timer(r->idiag_expires),
1446 if (find_users(r->idiag_inode, ubuf, sizeof(ubuf)) > 0)
1447 printf(" users:(%s)", ubuf);
1451 printf(" uid:%u", (unsigned)r->idiag_uid);
1452 printf(" ino:%u", r->idiag_inode);
1454 if (r->id.idiag_cookie[1] != 0)
1455 printf("%08x", r->id.idiag_cookie[1]);
1456 printf("%08x", r->id.idiag_cookie[0]);
1458 if (show_mem || show_tcpinfo) {
1460 tcp_show_info(nlh, r);
1468 static int tcp_show_netlink(struct filter *f, FILE *dump_fp, int socktype)
1471 struct sockaddr_nl nladdr;
1473 struct nlmsghdr nlh;
1474 struct inet_diag_req r;
1481 struct iovec iov[3];
1483 if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_INET_DIAG)) < 0)
1486 memset(&nladdr, 0, sizeof(nladdr));
1487 nladdr.nl_family = AF_NETLINK;
1489 req.nlh.nlmsg_len = sizeof(req);
1490 req.nlh.nlmsg_type = socktype;
1491 req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
1492 req.nlh.nlmsg_pid = 0;
1493 req.nlh.nlmsg_seq = 123456;
1494 memset(&req.r, 0, sizeof(req.r));
1495 req.r.idiag_family = AF_INET;
1496 req.r.idiag_states = f->states;
1498 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
1501 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
1502 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
1503 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
1506 iov[0] = (struct iovec){
1508 .iov_len = sizeof(req)
1511 bclen = ssfilter_bytecompile(f->f, &bc);
1512 rta.rta_type = INET_DIAG_REQ_BYTECODE;
1513 rta.rta_len = RTA_LENGTH(bclen);
1514 iov[1] = (struct iovec){ &rta, sizeof(rta) };
1515 iov[2] = (struct iovec){ bc, bclen };
1516 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
1519 msg = (struct msghdr) {
1520 .msg_name = (void*)&nladdr,
1521 .msg_namelen = sizeof(nladdr),
1523 .msg_iovlen = f->f ? 3 : 1,
1526 if (sendmsg(fd, &msg, 0) < 0)
1529 iov[0] = (struct iovec){
1531 .iov_len = sizeof(buf)
1538 msg = (struct msghdr) {
1539 (void*)&nladdr, sizeof(nladdr),
1545 status = recvmsg(fd, &msg, 0);
1554 fprintf(stderr, "EOF on netlink\n");
1559 fwrite(buf, 1, NLMSG_ALIGN(status), dump_fp);
1561 h = (struct nlmsghdr*)buf;
1562 while (NLMSG_OK(h, status)) {
1564 struct inet_diag_msg *r = NLMSG_DATA(h);
1566 if (/*h->nlmsg_pid != rth->local.nl_pid ||*/
1567 h->nlmsg_seq != 123456)
1570 if (h->nlmsg_type == NLMSG_DONE)
1572 if (h->nlmsg_type == NLMSG_ERROR) {
1573 struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
1574 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
1575 fprintf(stderr, "ERROR truncated\n");
1577 errno = -err->error;
1578 perror("TCPDIAG answers");
1583 if (!(f->families & (1<<r->idiag_family))) {
1584 h = NLMSG_NEXT(h, status);
1587 err = tcp_show_sock(h, NULL);
1593 h = NLMSG_NEXT(h, status);
1595 if (msg.msg_flags & MSG_TRUNC) {
1596 fprintf(stderr, "Message truncated\n");
1600 fprintf(stderr, "!!!Remnant of size %d\n", status);
1607 static int tcp_show_netlink_file(struct filter *f)
1612 if ((fp = fopen(getenv("TCPDIAG_FILE"), "r")) == NULL) {
1613 perror("fopen($TCPDIAG_FILE)");
1619 struct nlmsghdr *h = (struct nlmsghdr*)buf;
1621 status = fread(buf, 1, sizeof(*h), fp);
1623 perror("Reading header from $TCPDIAG_FILE");
1626 if (status != sizeof(*h)) {
1627 perror("Unexpected EOF reading $TCPDIAG_FILE");
1631 status = fread(h+1, 1, NLMSG_ALIGN(h->nlmsg_len-sizeof(*h)), fp);
1634 perror("Reading $TCPDIAG_FILE");
1637 if (status + sizeof(*h) < h->nlmsg_len) {
1638 perror("Unexpected EOF reading $TCPDIAG_FILE");
1642 /* The only legal exit point */
1643 if (h->nlmsg_type == NLMSG_DONE)
1646 if (h->nlmsg_type == NLMSG_ERROR) {
1647 struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
1648 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
1649 fprintf(stderr, "ERROR truncated\n");
1651 errno = -err->error;
1652 perror("TCPDIAG answered");
1657 err = tcp_show_sock(h, f);
1663 static int tcp_show(struct filter *f, int socktype)
1667 int bufsize = 64*1024;
1669 dg_proto = TCP_PROTO;
1671 if (getenv("TCPDIAG_FILE"))
1672 return tcp_show_netlink_file(f);
1674 if (!getenv("PROC_NET_TCP") && !getenv("PROC_ROOT")
1675 && tcp_show_netlink(f, NULL, socktype) == 0)
1678 /* Sigh... We have to parse /proc/net/tcp... */
1681 /* Estimate amount of sockets and try to allocate
1682 * huge buffer to read all the table at one read.
1683 * Limit it by 16MB though. The assumption is: as soon as
1684 * kernel was able to hold information about N connections,
1685 * it is able to give us some memory for snapshot.
1688 int guess = slabstat.socks+slabstat.tcp_syns;
1689 if (f->states&(1<<SS_TIME_WAIT))
1690 guess += slabstat.tcp_tws;
1691 if (guess > (16*1024*1024)/128)
1692 guess = (16*1024*1024)/128;
1694 if (guess > bufsize)
1697 while (bufsize >= 64*1024) {
1698 if ((buf = malloc(bufsize)) != NULL)
1707 if (f->families & (1<<AF_INET)) {
1708 if ((fp = net_tcp_open()) == NULL)
1711 setbuffer(fp, buf, bufsize);
1712 if (generic_record_read(fp, tcp_show_line, f, AF_INET))
1717 if ((f->families & (1<<AF_INET6)) &&
1718 (fp = net_tcp6_open()) != NULL) {
1719 setbuffer(fp, buf, bufsize);
1720 if (generic_record_read(fp, tcp_show_line, f, AF_INET6))
1730 int saved_errno = errno;
1735 errno = saved_errno;
1741 int dgram_show_line(char *line, const struct filter *f, int family)
1744 char *loc, *rem, *data;
1749 if ((p = strchr(line, ':')) == NULL)
1753 if ((p = strchr(loc, ':')) == NULL)
1758 if ((p = strchr(rem, ':')) == NULL)
1764 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
1766 if (!(f->states & (1<<state)))
1770 s.local.family = s.remote.family = family;
1771 if (family == AF_INET) {
1772 sscanf(loc, "%x:%x", s.local.data, (unsigned*)&s.lport);
1773 sscanf(rem, "%x:%x", s.remote.data, (unsigned*)&s.rport);
1774 s.local.bytelen = s.remote.bytelen = 4;
1776 sscanf(loc, "%08x%08x%08x%08x:%x",
1782 sscanf(rem, "%08x%08x%08x%08x:%x",
1788 s.local.bytelen = s.remote.bytelen = 16;
1791 if (f->f && run_ssfilter(f->f, &s) == 0)
1795 n = sscanf(data, "%x %x:%x %*x:%*x %*x %d %*d %u %d %llx %[^\n]\n",
1796 &s.state, &s.wq, &s.rq,
1798 &s.refcnt, &s.sk, opt);
1804 printf("%-*s ", netid_width, dg_proto);
1806 printf("%-*s ", state_width, sstate_name[s.state]);
1808 printf("%-6d %-6d ", s.rq, s.wq);
1810 formatted_print(&s.local, s.lport);
1811 formatted_print(&s.remote, s.rport);
1815 if (find_users(s.ino, ubuf, sizeof(ubuf)) > 0)
1816 printf(" users:(%s)", ubuf);
1821 printf(" uid=%u", (unsigned)s.uid);
1822 printf(" ino=%u", s.ino);
1823 printf(" sk=%llx", s.sk);
1825 printf(" opt:\"%s\"", opt);
1833 int udp_show(struct filter *f)
1837 dg_proto = UDP_PROTO;
1839 if (f->families&(1<<AF_INET)) {
1840 if ((fp = net_udp_open()) == NULL)
1842 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
1847 if ((f->families&(1<<AF_INET6)) &&
1848 (fp = net_udp6_open()) != NULL) {
1849 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
1857 int saved_errno = errno;
1860 errno = saved_errno;
1865 int raw_show(struct filter *f)
1869 dg_proto = RAW_PROTO;
1871 if (f->families&(1<<AF_INET)) {
1872 if ((fp = net_raw_open()) == NULL)
1874 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
1879 if ((f->families&(1<<AF_INET6)) &&
1880 (fp = net_raw6_open()) != NULL) {
1881 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
1889 int saved_errno = errno;
1892 errno = saved_errno;
1900 struct unixstat *next;
1912 int unix_state_map[] = { SS_CLOSE, SS_SYN_SENT,
1913 SS_ESTABLISHED, SS_CLOSING };
1916 #define MAX_UNIX_REMEMBER (1024*1024/sizeof(struct unixstat))
1918 void unix_list_free(struct unixstat *list)
1921 struct unixstat *s = list;
1929 void unix_list_print(struct unixstat *list, struct filter *f)
1934 for (s = list; s; s = s->next) {
1935 if (!(f->states & (1<<s->state)))
1937 if (s->type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB)))
1939 if (s->type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB)))
1945 for (p = list; p; p = p->next) {
1946 if (s->peer == p->ino)
1952 peer = p->name ? : "*";
1958 tst.local.family = AF_UNIX;
1959 tst.remote.family = AF_UNIX;
1960 memcpy(tst.local.data, &s->name, sizeof(s->name));
1961 if (strcmp(peer, "*") == 0)
1962 memset(tst.remote.data, 0, sizeof(peer));
1964 memcpy(tst.remote.data, &peer, sizeof(peer));
1965 if (run_ssfilter(f->f, &tst) == 0)
1970 printf("%-*s ", netid_width,
1971 s->type == SOCK_STREAM ? "u_str" : "u_dgr");
1973 printf("%-*s ", state_width, sstate_name[s->state]);
1974 printf("%-6d %-6d ", s->rq, s->wq);
1975 printf("%*s %-*d %*s %-*d",
1976 addr_width, s->name ? : "*", serv_width, s->ino,
1977 addr_width, peer, serv_width, s->peer);
1980 if (find_users(s->ino, ubuf, sizeof(ubuf)) > 0)
1981 printf(" users:(%s)", ubuf);
1987 int unix_show(struct filter *f)
1994 struct unixstat *list = NULL;
1996 if ((fp = net_unix_open()) == NULL)
1998 fgets(buf, sizeof(buf)-1, fp);
2000 if (memcmp(buf, "Peer", 4) == 0)
2004 while (fgets(buf, sizeof(buf)-1, fp)) {
2005 struct unixstat *u, **insp;
2008 if (!(u = malloc(sizeof(*u))))
2012 if (sscanf(buf, "%x: %x %x %x %x %x %d %s",
2013 &u->peer, &u->rq, &u->wq, &flags, &u->type,
2014 &u->state, &u->ino, name) < 8)
2017 if (flags&(1<<16)) {
2018 u->state = SS_LISTEN;
2020 u->state = unix_state_map[u->state-1];
2021 if (u->type == SOCK_DGRAM &&
2022 u->state == SS_CLOSE &&
2024 u->state = SS_ESTABLISHED;
2035 if (u->type < (*insp)->type ||
2036 (u->type == (*insp)->type &&
2037 u->ino < (*insp)->ino))
2039 insp = &(*insp)->next;
2045 if ((u->name = malloc(strlen(name)+1)) == NULL)
2047 strcpy(u->name, name);
2049 if (++cnt > MAX_UNIX_REMEMBER) {
2050 unix_list_print(list, f);
2051 unix_list_free(list);
2058 unix_list_print(list, f);
2059 unix_list_free(list);
2068 int packet_show(struct filter *f)
2079 unsigned long long sk;
2081 if (!(f->states & (1<<SS_CLOSE)))
2084 if ((fp = net_packet_open()) == NULL)
2086 fgets(buf, sizeof(buf)-1, fp);
2088 while (fgets(buf, sizeof(buf)-1, fp)) {
2089 sscanf(buf, "%llx %*d %d %x %d %d %u %u %u",
2091 &type, &prot, &iface, &state,
2094 if (type == SOCK_RAW && !(f->dbs&(1<<PACKET_R_DB)))
2096 if (type == SOCK_DGRAM && !(f->dbs&(1<<PACKET_DG_DB)))
2100 tst.local.family = AF_PACKET;
2101 tst.remote.family = AF_PACKET;
2104 tst.local.data[0] = prot;
2105 tst.remote.data[0] = 0;
2106 if (run_ssfilter(f->f, &tst) == 0)
2111 printf("%-*s ", netid_width,
2112 type == SOCK_RAW ? "p_raw" : "p_dgr");
2114 printf("%-*s ", state_width, "UNCONN");
2115 printf("%-6d %-6d ", rq, 0);
2117 printf("%*s:", addr_width, "*");
2120 printf("%*s:", addr_width,
2121 ll_proto_n2a(htons(prot), tb, sizeof(tb)));
2124 printf("%-*s ", serv_width, "*");
2126 printf("%-*s ", serv_width, xll_index_to_name(iface));
2129 addr_width, "", serv_width, "");
2133 if (find_users(ino, ubuf, sizeof(ubuf)) > 0)
2134 printf(" users:(%s)", ubuf);
2137 printf(" ino=%u uid=%u sk=%llx", ino, uid, sk);
2145 int netlink_show(struct filter *f)
2152 unsigned long long sk, cb;
2154 if (!(f->states & (1<<SS_CLOSE)))
2157 if ((fp = net_netlink_open()) == NULL)
2159 fgets(buf, sizeof(buf)-1, fp);
2161 while (fgets(buf, sizeof(buf)-1, fp)) {
2162 sscanf(buf, "%llx %d %d %x %d %d %llx %d",
2164 &prot, &pid, &groups, &rq, &wq, &cb, &rc);
2168 tst.local.family = AF_NETLINK;
2169 tst.remote.family = AF_NETLINK;
2172 tst.local.data[0] = prot;
2173 tst.remote.data[0] = 0;
2174 if (run_ssfilter(f->f, &tst) == 0)
2179 printf("%-*s ", netid_width, "nl");
2181 printf("%-*s ", state_width, "UNCONN");
2182 printf("%-6d %-6d ", rq, wq);
2183 if (resolve_services && prot == 0)
2184 printf("%*s:", addr_width, "rtnl");
2185 else if (resolve_services && prot == 3)
2186 printf("%*s:", addr_width, "fw");
2187 else if (resolve_services && prot == 4)
2188 printf("%*s:", addr_width, "tcpdiag");
2190 printf("%*d:", addr_width, prot);
2192 printf("%-*s ", serv_width, "*");
2193 } else if (resolve_services) {
2197 printf("%-*s ", serv_width, "kernel");
2198 } else if (pid > 0) {
2201 sprintf(procname, "%s/%d/stat",
2202 getenv("PROC_ROOT") ? : "/proc", pid);
2203 if ((fp = fopen(procname, "r")) != NULL) {
2204 if (fscanf(fp, "%*d (%[^)])", procname) == 1) {
2205 sprintf(procname+strlen(procname), "/%d", pid);
2206 printf("%-*s ", serv_width, procname);
2213 printf("%-*d ", serv_width, pid);
2215 printf("%-*d ", serv_width, pid);
2218 addr_width, "", serv_width, "");
2221 printf(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups);
2234 int get_snmp_int(char *proto, char *key, int *result)
2238 int protolen = strlen(proto);
2239 int keylen = strlen(key);
2243 if ((fp = net_snmp_open()) == NULL)
2246 while (fgets(buf, sizeof(buf), fp) != NULL) {
2249 if (memcmp(buf, proto, protolen))
2251 while ((p = strchr(p, ' ')) != NULL) {
2254 if (memcmp(p, key, keylen) == 0 &&
2255 (p[keylen] == ' ' || p[keylen] == '\n'))
2258 if (fgets(buf, sizeof(buf), fp) == NULL)
2260 if (memcmp(buf, proto, protolen))
2263 while ((p = strchr(p, ' ')) != NULL) {
2266 sscanf(p, "%d", result);
2279 /* Get stats from sockstat */
2300 static void get_sockstat_line(char *line, struct sockstat *s)
2302 char id[256], rem[256];
2304 if (sscanf(line, "%[^ ] %[^\n]\n", id, rem) != 2)
2307 if (strcmp(id, "sockets:") == 0)
2308 sscanf(rem, "%*s%d", &s->socks);
2309 else if (strcmp(id, "UDP:") == 0)
2310 sscanf(rem, "%*s%d", &s->udp4);
2311 else if (strcmp(id, "UDP6:") == 0)
2312 sscanf(rem, "%*s%d", &s->udp6);
2313 else if (strcmp(id, "RAW:") == 0)
2314 sscanf(rem, "%*s%d", &s->raw4);
2315 else if (strcmp(id, "RAW6:") == 0)
2316 sscanf(rem, "%*s%d", &s->raw6);
2317 else if (strcmp(id, "TCP6:") == 0)
2318 sscanf(rem, "%*s%d", &s->tcp6_hashed);
2319 else if (strcmp(id, "FRAG:") == 0)
2320 sscanf(rem, "%*s%d%*s%d", &s->frag4, &s->frag4_mem);
2321 else if (strcmp(id, "FRAG6:") == 0)
2322 sscanf(rem, "%*s%d%*s%d", &s->frag6, &s->frag6_mem);
2323 else if (strcmp(id, "TCP:") == 0)
2324 sscanf(rem, "%*s%d%*s%d%*s%d%*s%d%*s%d",
2326 &s->tcp_orphans, &s->tcp_tws, &s->tcp_total, &s->tcp_mem);
2329 int get_sockstat(struct sockstat *s)
2334 memset(s, 0, sizeof(*s));
2336 if ((fp = net_sockstat_open()) == NULL)
2338 while(fgets(buf, sizeof(buf), fp) != NULL)
2339 get_sockstat_line(buf, s);
2342 if ((fp = net_sockstat6_open()) == NULL)
2344 while(fgets(buf, sizeof(buf), fp) != NULL)
2345 get_sockstat_line(buf, s);
2351 int print_summary(void)
2356 if (get_sockstat(&s) < 0)
2357 perror("ss: get_sockstat");
2358 if (get_snmp_int("Tcp:", "CurrEstab", &sn.tcp_estab) < 0)
2359 perror("ss: get_snmpstat");
2361 printf("Total: %d (kernel %d)\n", s.socks, slabstat.socks);
2363 printf("TCP: %d (estab %d, closed %d, orphaned %d, synrecv %d, timewait %d/%d), ports %d\n",
2364 s.tcp_total + slabstat.tcp_syns + s.tcp_tws,
2366 s.tcp_total - (s.tcp4_hashed+s.tcp6_hashed-s.tcp_tws),
2369 s.tcp_tws, slabstat.tcp_tws,
2374 printf("Transport Total IP IPv6\n");
2375 printf("* %-9d %-9s %-9s\n", slabstat.socks, "-", "-");
2376 printf("RAW %-9d %-9d %-9d\n", s.raw4+s.raw6, s.raw4, s.raw6);
2377 printf("UDP %-9d %-9d %-9d\n", s.udp4+s.udp6, s.udp4, s.udp6);
2378 printf("TCP %-9d %-9d %-9d\n", s.tcp4_hashed+s.tcp6_hashed, s.tcp4_hashed, s.tcp6_hashed);
2379 printf("INET %-9d %-9d %-9d\n",
2380 s.raw4+s.udp4+s.tcp4_hashed+
2381 s.raw6+s.udp6+s.tcp6_hashed,
2382 s.raw4+s.udp4+s.tcp4_hashed,
2383 s.raw6+s.udp6+s.tcp6_hashed);
2384 printf("FRAG %-9d %-9d %-9d\n", s.frag4+s.frag6, s.frag4, s.frag6);
2391 static void _usage(FILE *dest)
2394 "Usage: ss [ OPTIONS ]\n"
2395 " ss [ OPTIONS ] [ FILTER ]\n"
2396 " -h, --help this message\n"
2397 " -V, --version output version information\n"
2398 " -n, --numeric don't resolve service names\n"
2399 " -r, --resolve resolve host names\n"
2400 " -a, --all display all sockets\n"
2401 " -l, --listening display listening sockets\n"
2402 " -o, --options show timer information\n"
2403 " -e, --extended show detailed socket information\n"
2404 " -m, --memory show socket memory usage\n"
2405 " -p, --processes show process using socket\n"
2406 " -i, --info show internal TCP information\n"
2407 " -s, --summary show socket usage summary\n"
2409 " -4, --ipv4 display only IP version 4 sockets\n"
2410 " -6, --ipv6 display only IP version 6 sockets\n"
2411 " -0, --packet display PACKET sockets\n"
2412 " -t, --tcp display only TCP sockets\n"
2413 " -u, --udp display only UDP sockets\n"
2414 " -d, --dccp display only DCCP sockets\n"
2415 " -w, --raw display only RAW sockets\n"
2416 " -x, --unix display only Unix domain sockets\n"
2417 " -f, --family=FAMILY display sockets of type FAMILY\n"
2419 " -A, --query=QUERY, --socket=QUERY\n"
2420 " QUERY := {all|inet|tcp|udp|raw|unix|packet|netlink}[,QUERY]\n"
2422 " -D, --diag=FILE Dump raw information about TCP sockets to FILE\n"
2423 " -F, --filter=FILE read filter information from FILE\n"
2424 " FILTER := [ state TCP-STATE ] [ EXPRESSION ]\n"
2428 static void help(void) __attribute__((noreturn));
2429 static void help(void)
2435 static void usage(void) __attribute__((noreturn));
2436 static void usage(void)
2443 int scan_state(const char *state)
2446 if (strcasecmp(state, "close") == 0 ||
2447 strcasecmp(state, "closed") == 0)
2448 return (1<<SS_CLOSE);
2449 if (strcasecmp(state, "syn-rcv") == 0)
2450 return (1<<SS_SYN_RECV);
2451 if (strcasecmp(state, "established") == 0)
2452 return (1<<SS_ESTABLISHED);
2453 if (strcasecmp(state, "all") == 0)
2455 if (strcasecmp(state, "connected") == 0)
2456 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN));
2457 if (strcasecmp(state, "synchronized") == 0)
2458 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN)|(1<<SS_SYN_SENT));
2459 if (strcasecmp(state, "bucket") == 0)
2460 return (1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT);
2461 if (strcasecmp(state, "big") == 0)
2462 return SS_ALL & ~((1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT));
2463 for (i=0; i<SS_MAX; i++) {
2464 if (strcasecmp(state, sstate_namel[i]) == 0)
2470 static const struct option long_opts[] = {
2471 { "numeric", 0, 0, 'n' },
2472 { "resolve", 0, 0, 'r' },
2473 { "options", 0, 0, 'o' },
2474 { "extended", 0, 0, 'e' },
2475 { "memory", 0, 0, 'm' },
2476 { "info", 0, 0, 'i' },
2477 { "processes", 0, 0, 'p' },
2478 { "dccp", 0, 0, 'd' },
2479 { "tcp", 0, 0, 't' },
2480 { "udp", 0, 0, 'u' },
2481 { "raw", 0, 0, 'w' },
2482 { "unix", 0, 0, 'x' },
2483 { "all", 0, 0, 'a' },
2484 { "listening", 0, 0, 'l' },
2485 { "ipv4", 0, 0, '4' },
2486 { "ipv6", 0, 0, '6' },
2487 { "packet", 0, 0, '0' },
2488 { "family", 1, 0, 'f' },
2489 { "socket", 1, 0, 'A' },
2490 { "query", 1, 0, 'A' },
2491 { "summary", 0, 0, 's' },
2492 { "diag", 1, 0, 'D' },
2493 { "filter", 1, 0, 'F' },
2494 { "version", 0, 0, 'V' },
2495 { "help", 0, 0, 'h' },
2500 int main(int argc, char *argv[])
2506 const char *dump_tcpdiag = NULL;
2507 FILE *filter_fp = NULL;
2510 memset(¤t_filter, 0, sizeof(current_filter));
2512 current_filter.states = default_filter.states;
2514 while ((ch = getopt_long(argc, argv, "dhaletuwxnro460spf:miA:D:F:vV",
2515 long_opts, NULL)) != EOF) {
2518 resolve_services = 0;
2538 user_ent_hash_build();
2541 current_filter.dbs |= (1<<DCCP_DB);
2545 current_filter.dbs |= (1<<TCP_DB);
2549 current_filter.dbs |= (1<<UDP_DB);
2553 current_filter.dbs |= (1<<RAW_DB);
2557 current_filter.dbs |= UNIX_DBM;
2561 current_filter.states = SS_ALL;
2564 current_filter.states = (1<<SS_LISTEN);
2567 preferred_family = AF_INET;
2570 preferred_family = AF_INET6;
2573 preferred_family = AF_PACKET;
2576 if (strcmp(optarg, "inet") == 0)
2577 preferred_family = AF_INET;
2578 else if (strcmp(optarg, "inet6") == 0)
2579 preferred_family = AF_INET6;
2580 else if (strcmp(optarg, "link") == 0)
2581 preferred_family = AF_PACKET;
2582 else if (strcmp(optarg, "unix") == 0)
2583 preferred_family = AF_UNIX;
2584 else if (strcmp(optarg, "netlink") == 0)
2585 preferred_family = AF_NETLINK;
2586 else if (strcmp(optarg, "help") == 0)
2589 fprintf(stderr, "ss: \"%s\" is invalid family\n", optarg);
2597 current_filter.dbs = 0;
2603 if ((p1 = strchr(p, ',')) != NULL)
2605 if (strcmp(p, "all") == 0) {
2606 current_filter.dbs = ALL_DB;
2607 } else if (strcmp(p, "inet") == 0) {
2608 current_filter.dbs |= (1<<TCP_DB)|(1<<DCCP_DB)|(1<<UDP_DB)|(1<<RAW_DB);
2609 } else if (strcmp(p, "udp") == 0) {
2610 current_filter.dbs |= (1<<UDP_DB);
2611 } else if (strcmp(p, "dccp") == 0) {
2612 current_filter.dbs |= (1<<DCCP_DB);
2613 } else if (strcmp(p, "tcp") == 0) {
2614 current_filter.dbs |= (1<<TCP_DB);
2615 } else if (strcmp(p, "raw") == 0) {
2616 current_filter.dbs |= (1<<RAW_DB);
2617 } else if (strcmp(p, "unix") == 0) {
2618 current_filter.dbs |= UNIX_DBM;
2619 } else if (strcasecmp(p, "unix_stream") == 0 ||
2620 strcmp(p, "u_str") == 0) {
2621 current_filter.dbs |= (1<<UNIX_ST_DB);
2622 } else if (strcasecmp(p, "unix_dgram") == 0 ||
2623 strcmp(p, "u_dgr") == 0) {
2624 current_filter.dbs |= (1<<UNIX_DG_DB);
2625 } else if (strcmp(p, "packet") == 0) {
2626 current_filter.dbs |= PACKET_DBM;
2627 } else if (strcmp(p, "packet_raw") == 0 ||
2628 strcmp(p, "p_raw") == 0) {
2629 current_filter.dbs |= (1<<PACKET_R_DB);
2630 } else if (strcmp(p, "packet_dgram") == 0 ||
2631 strcmp(p, "p_dgr") == 0) {
2632 current_filter.dbs |= (1<<PACKET_DG_DB);
2633 } else if (strcmp(p, "netlink") == 0) {
2634 current_filter.dbs |= (1<<NETLINK_DB);
2636 fprintf(stderr, "ss: \"%s\" is illegal socket table id\n", p);
2647 dump_tcpdiag = optarg;
2651 fprintf(stderr, "More than one filter file\n");
2654 if (optarg[0] == '-')
2657 filter_fp = fopen(optarg, "r");
2659 perror("fopen filter file");
2665 printf("ss utility, iproute2-ss%s\n", SNAPSHOT);
2678 get_slabstat(&slabstat);
2682 if (do_default && argc == 0)
2687 current_filter.dbs = default_filter.dbs;
2689 if (preferred_family == AF_UNSPEC) {
2690 if (!(current_filter.dbs&~UNIX_DBM))
2691 preferred_family = AF_UNIX;
2692 else if (!(current_filter.dbs&~PACKET_DBM))
2693 preferred_family = AF_PACKET;
2694 else if (!(current_filter.dbs&~(1<<NETLINK_DB)))
2695 preferred_family = AF_NETLINK;
2698 if (preferred_family != AF_UNSPEC) {
2700 if (preferred_family == AF_INET ||
2701 preferred_family == AF_INET6) {
2702 mask2= current_filter.dbs;
2703 } else if (preferred_family == AF_PACKET) {
2705 } else if (preferred_family == AF_UNIX) {
2707 } else if (preferred_family == AF_NETLINK) {
2708 mask2 = (1<<NETLINK_DB);
2714 current_filter.dbs = mask2;
2716 current_filter.dbs &= mask2;
2717 current_filter.families = (1<<preferred_family);
2720 current_filter.families = ~0;
2722 current_filter.families = default_filter.families;
2724 if (current_filter.dbs == 0) {
2725 fprintf(stderr, "ss: no socket tables to show with such filter.\n");
2728 if (current_filter.families == 0) {
2729 fprintf(stderr, "ss: no families to show with such filter.\n");
2733 if (resolve_services && resolve_hosts &&
2734 (current_filter.dbs&(UNIX_DBM|(1<<TCP_DB)|(1<<UDP_DB)|(1<<DCCP_DB))))
2735 init_service_resolver();
2737 /* Now parse filter... */
2738 if (argc == 0 && filter_fp) {
2739 if (ssfilter_parse(¤t_filter.f, 0, NULL, filter_fp))
2744 if (strcmp(*argv, "state") == 0) {
2747 current_filter.states = 0;
2748 current_filter.states |= scan_state(*argv);
2750 } else if (strcmp(*argv, "exclude") == 0 ||
2751 strcmp(*argv, "excl") == 0) {
2754 current_filter.states = SS_ALL;
2755 current_filter.states &= ~scan_state(*argv);
2758 if (ssfilter_parse(¤t_filter.f, argc, argv, filter_fp))
2765 if (current_filter.states == 0) {
2766 fprintf(stderr, "ss: no socket states to show with such filter.\n");
2771 FILE *dump_fp = stdout;
2772 if (!(current_filter.dbs & (1<<TCP_DB))) {
2773 fprintf(stderr, "ss: tcpdiag dump requested and no tcp in filter.\n");
2776 if (dump_tcpdiag[0] != '-') {
2777 dump_fp = fopen(dump_tcpdiag, "w");
2778 if (!dump_tcpdiag) {
2779 perror("fopen dump file");
2783 tcp_show_netlink(¤t_filter, dump_fp, TCPDIAG_GETSOCK);
2789 if (current_filter.dbs&(current_filter.dbs-1))
2793 if (current_filter.states&(current_filter.states-1))
2797 if (isatty(STDOUT_FILENO)) {
2800 if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != -1) {
2802 screen_width = w.ws_col;
2806 addrp_width = screen_width;
2807 addrp_width -= netid_width+1;
2808 addrp_width -= state_width+1;
2811 if (addrp_width&1) {
2814 else if (state_width)
2821 serv_width = resolve_services ? 7 : 5;
2823 if (addrp_width < 15+serv_width+1)
2824 addrp_width = 15+serv_width+1;
2826 addr_width = addrp_width - serv_width - 1;
2829 printf("%-*s ", netid_width, "Netid");
2831 printf("%-*s ", state_width, "State");
2832 printf("%-6s %-6s ", "Recv-Q", "Send-Q");
2834 printf("%*s:%-*s %*s:%-*s\n",
2835 addr_width, "Local Address", serv_width, "Port",
2836 addr_width, "Peer Address", serv_width, "Port");
2840 if (current_filter.dbs & (1<<NETLINK_DB))
2841 netlink_show(¤t_filter);
2842 if (current_filter.dbs & PACKET_DBM)
2843 packet_show(¤t_filter);
2844 if (current_filter.dbs & UNIX_DBM)
2845 unix_show(¤t_filter);
2846 if (current_filter.dbs & (1<<RAW_DB))
2847 raw_show(¤t_filter);
2848 if (current_filter.dbs & (1<<UDP_DB))
2849 udp_show(¤t_filter);
2850 if (current_filter.dbs & (1<<TCP_DB))
2851 tcp_show(¤t_filter, TCPDIAG_GETSOCK);
2852 if (current_filter.dbs & (1<<DCCP_DB))
2853 tcp_show(¤t_filter, DCCPDIAG_GETSOCK);