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ss: Allow excluding a socket table from being queried
[mirror_iproute2.git] / misc / ss.c
1 /*
2 * ss.c "sockstat", socket statistics
3 *
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.
8 *
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
10 */
11
12 #include <stdio.h>
13 #include <stdlib.h>
14 #include <unistd.h>
15 #include <fcntl.h>
16 #include <sys/ioctl.h>
17 #include <sys/socket.h>
18 #include <sys/uio.h>
19 #include <netinet/in.h>
20 #include <string.h>
21 #include <errno.h>
22 #include <netdb.h>
23 #include <arpa/inet.h>
24 #include <dirent.h>
25 #include <fnmatch.h>
26 #include <getopt.h>
27 #include <stdbool.h>
28 #include <limits.h>
29 #include <stdarg.h>
30
31 #include "utils.h"
32 #include "rt_names.h"
33 #include "ll_map.h"
34 #include "libnetlink.h"
35 #include "namespace.h"
36 #include "SNAPSHOT.h"
37
38 #include <linux/tcp.h>
39 #include <linux/sock_diag.h>
40 #include <linux/inet_diag.h>
41 #include <linux/unix_diag.h>
42 #include <linux/netdevice.h> /* for MAX_ADDR_LEN */
43 #include <linux/filter.h>
44 #include <linux/packet_diag.h>
45 #include <linux/netlink_diag.h>
46 #include <linux/sctp.h>
47 #include <linux/vm_sockets_diag.h>
48
49 #define MAGIC_SEQ 123456
50 #define BUF_CHUNK (1024 * 1024)
51 #define LEN_ALIGN(x) (((x) + 1) & ~1)
52
53 #define DIAG_REQUEST(_req, _r) \
54 struct { \
55 struct nlmsghdr nlh; \
56 _r; \
57 } _req = { \
58 .nlh = { \
59 .nlmsg_type = SOCK_DIAG_BY_FAMILY, \
60 .nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST,\
61 .nlmsg_seq = MAGIC_SEQ, \
62 .nlmsg_len = sizeof(_req), \
63 }, \
64 }
65
66 #if HAVE_SELINUX
67 #include <selinux/selinux.h>
68 #else
69 /* Stubs for SELinux functions */
70 static int is_selinux_enabled(void)
71 {
72 return -1;
73 }
74
75 static int getpidcon(pid_t pid, char **context)
76 {
77 *context = NULL;
78 return -1;
79 }
80
81 static int getfilecon(char *path, char **context)
82 {
83 *context = NULL;
84 return -1;
85 }
86
87 static int security_get_initial_context(char *name, char **context)
88 {
89 *context = NULL;
90 return -1;
91 }
92 #endif
93
94 int resolve_services = 1;
95 int preferred_family = AF_UNSPEC;
96 int show_options;
97 int show_details;
98 int show_users;
99 int show_mem;
100 int show_tcpinfo;
101 int show_bpf;
102 int show_proc_ctx;
103 int show_sock_ctx;
104 int show_header = 1;
105 int follow_events;
106 int sctp_ino;
107
108 enum col_id {
109 COL_NETID,
110 COL_STATE,
111 COL_RECVQ,
112 COL_SENDQ,
113 COL_ADDR,
114 COL_SERV,
115 COL_RADDR,
116 COL_RSERV,
117 COL_EXT,
118 COL_MAX
119 };
120
121 enum col_align {
122 ALIGN_LEFT,
123 ALIGN_CENTER,
124 ALIGN_RIGHT
125 };
126
127 struct column {
128 const enum col_align align;
129 const char *header;
130 const char *ldelim;
131 int disabled;
132 int width; /* Calculated, including additional layout spacing */
133 int max_len; /* Measured maximum field length in this column */
134 };
135
136 static struct column columns[] = {
137 { ALIGN_LEFT, "Netid", "", 0, 0, 0 },
138 { ALIGN_LEFT, "State", " ", 0, 0, 0 },
139 { ALIGN_LEFT, "Recv-Q", " ", 0, 0, 0 },
140 { ALIGN_LEFT, "Send-Q", " ", 0, 0, 0 },
141 { ALIGN_RIGHT, "Local Address:", " ", 0, 0, 0 },
142 { ALIGN_LEFT, "Port", "", 0, 0, 0 },
143 { ALIGN_RIGHT, "Peer Address:", " ", 0, 0, 0 },
144 { ALIGN_LEFT, "Port", "", 0, 0, 0 },
145 { ALIGN_LEFT, "", "", 0, 0, 0 },
146 };
147
148 static struct column *current_field = columns;
149
150 /* Output buffer: chained chunks of BUF_CHUNK bytes. Each field is written to
151 * the buffer as a variable size token. A token consists of a 16 bits length
152 * field, followed by a string which is not NULL-terminated.
153 *
154 * A new chunk is allocated and linked when the current chunk doesn't have
155 * enough room to store the current token as a whole.
156 */
157 struct buf_chunk {
158 struct buf_chunk *next; /* Next chained chunk */
159 char *end; /* Current end of content */
160 char data[0];
161 };
162
163 struct buf_token {
164 uint16_t len; /* Data length, excluding length descriptor */
165 char data[0];
166 };
167
168 static struct {
169 struct buf_token *cur; /* Position of current token in chunk */
170 struct buf_chunk *head; /* First chunk */
171 struct buf_chunk *tail; /* Current chunk */
172 } buffer;
173
174 static const char *TCP_PROTO = "tcp";
175 static const char *SCTP_PROTO = "sctp";
176 static const char *UDP_PROTO = "udp";
177 static const char *RAW_PROTO = "raw";
178 static const char *dg_proto;
179
180 enum {
181 TCP_DB,
182 DCCP_DB,
183 UDP_DB,
184 RAW_DB,
185 UNIX_DG_DB,
186 UNIX_ST_DB,
187 UNIX_SQ_DB,
188 PACKET_DG_DB,
189 PACKET_R_DB,
190 NETLINK_DB,
191 SCTP_DB,
192 VSOCK_ST_DB,
193 VSOCK_DG_DB,
194 MAX_DB
195 };
196
197 #define PACKET_DBM ((1<<PACKET_DG_DB)|(1<<PACKET_R_DB))
198 #define UNIX_DBM ((1<<UNIX_DG_DB)|(1<<UNIX_ST_DB)|(1<<UNIX_SQ_DB))
199 #define ALL_DB ((1<<MAX_DB)-1)
200 #define INET_L4_DBM ((1<<TCP_DB)|(1<<UDP_DB)|(1<<DCCP_DB)|(1<<SCTP_DB))
201 #define INET_DBM (INET_L4_DBM | (1<<RAW_DB))
202 #define VSOCK_DBM ((1<<VSOCK_ST_DB)|(1<<VSOCK_DG_DB))
203
204 enum {
205 SS_UNKNOWN,
206 SS_ESTABLISHED,
207 SS_SYN_SENT,
208 SS_SYN_RECV,
209 SS_FIN_WAIT1,
210 SS_FIN_WAIT2,
211 SS_TIME_WAIT,
212 SS_CLOSE,
213 SS_CLOSE_WAIT,
214 SS_LAST_ACK,
215 SS_LISTEN,
216 SS_CLOSING,
217 SS_MAX
218 };
219
220 enum {
221 SCTP_STATE_CLOSED = 0,
222 SCTP_STATE_COOKIE_WAIT = 1,
223 SCTP_STATE_COOKIE_ECHOED = 2,
224 SCTP_STATE_ESTABLISHED = 3,
225 SCTP_STATE_SHUTDOWN_PENDING = 4,
226 SCTP_STATE_SHUTDOWN_SENT = 5,
227 SCTP_STATE_SHUTDOWN_RECEIVED = 6,
228 SCTP_STATE_SHUTDOWN_ACK_SENT = 7,
229 };
230
231 #define SS_ALL ((1 << SS_MAX) - 1)
232 #define SS_CONN (SS_ALL & ~((1<<SS_LISTEN)|(1<<SS_CLOSE)|(1<<SS_TIME_WAIT)|(1<<SS_SYN_RECV)))
233
234 #include "ssfilter.h"
235
236 struct filter {
237 int dbs;
238 int states;
239 uint64_t families;
240 struct ssfilter *f;
241 bool kill;
242 struct rtnl_handle *rth_for_killing;
243 };
244
245 #define FAMILY_MASK(family) ((uint64_t)1 << (family))
246
247 static const struct filter default_dbs[MAX_DB] = {
248 [TCP_DB] = {
249 .states = SS_CONN,
250 .families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6),
251 },
252 [DCCP_DB] = {
253 .states = SS_CONN,
254 .families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6),
255 },
256 [UDP_DB] = {
257 .states = (1 << SS_ESTABLISHED),
258 .families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6),
259 },
260 [RAW_DB] = {
261 .states = (1 << SS_ESTABLISHED),
262 .families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6),
263 },
264 [UNIX_DG_DB] = {
265 .states = (1 << SS_CLOSE),
266 .families = FAMILY_MASK(AF_UNIX),
267 },
268 [UNIX_ST_DB] = {
269 .states = SS_CONN,
270 .families = FAMILY_MASK(AF_UNIX),
271 },
272 [UNIX_SQ_DB] = {
273 .states = SS_CONN,
274 .families = FAMILY_MASK(AF_UNIX),
275 },
276 [PACKET_DG_DB] = {
277 .states = (1 << SS_CLOSE),
278 .families = FAMILY_MASK(AF_PACKET),
279 },
280 [PACKET_R_DB] = {
281 .states = (1 << SS_CLOSE),
282 .families = FAMILY_MASK(AF_PACKET),
283 },
284 [NETLINK_DB] = {
285 .states = (1 << SS_CLOSE),
286 .families = FAMILY_MASK(AF_NETLINK),
287 },
288 [SCTP_DB] = {
289 .states = SS_CONN,
290 .families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6),
291 },
292 [VSOCK_ST_DB] = {
293 .states = SS_CONN,
294 .families = FAMILY_MASK(AF_VSOCK),
295 },
296 [VSOCK_DG_DB] = {
297 .states = SS_CONN,
298 .families = FAMILY_MASK(AF_VSOCK),
299 },
300 };
301
302 static const struct filter default_afs[AF_MAX] = {
303 [AF_INET] = {
304 .dbs = INET_DBM,
305 .states = SS_CONN,
306 },
307 [AF_INET6] = {
308 .dbs = INET_DBM,
309 .states = SS_CONN,
310 },
311 [AF_UNIX] = {
312 .dbs = UNIX_DBM,
313 .states = SS_CONN,
314 },
315 [AF_PACKET] = {
316 .dbs = PACKET_DBM,
317 .states = (1 << SS_CLOSE),
318 },
319 [AF_NETLINK] = {
320 .dbs = (1 << NETLINK_DB),
321 .states = (1 << SS_CLOSE),
322 },
323 [AF_VSOCK] = {
324 .dbs = VSOCK_DBM,
325 .states = SS_CONN,
326 },
327 };
328
329 static int do_default = 1;
330 static struct filter current_filter;
331
332 static void filter_db_set(struct filter *f, int db, bool enable)
333 {
334 if (enable) {
335 f->states |= default_dbs[db].states;
336 f->dbs |= 1 << db;
337 } else {
338 f->dbs &= ~(1 << db);
339 }
340 do_default = 0;
341 }
342
343 static void filter_af_set(struct filter *f, int af)
344 {
345 f->states |= default_afs[af].states;
346 f->families |= FAMILY_MASK(af);
347 do_default = 0;
348 preferred_family = af;
349 }
350
351 static int filter_af_get(struct filter *f, int af)
352 {
353 return !!(f->families & FAMILY_MASK(af));
354 }
355
356 static void filter_default_dbs(struct filter *f, bool enable)
357 {
358 filter_db_set(f, UDP_DB, enable);
359 filter_db_set(f, DCCP_DB, enable);
360 filter_db_set(f, TCP_DB, enable);
361 filter_db_set(f, RAW_DB, enable);
362 filter_db_set(f, UNIX_ST_DB, enable);
363 filter_db_set(f, UNIX_DG_DB, enable);
364 filter_db_set(f, UNIX_SQ_DB, enable);
365 filter_db_set(f, PACKET_R_DB, enable);
366 filter_db_set(f, PACKET_DG_DB, enable);
367 filter_db_set(f, NETLINK_DB, enable);
368 filter_db_set(f, SCTP_DB, enable);
369 filter_db_set(f, VSOCK_ST_DB, enable);
370 filter_db_set(f, VSOCK_DG_DB, enable);
371 }
372
373 static void filter_states_set(struct filter *f, int states)
374 {
375 if (states)
376 f->states = states;
377 }
378
379 static void filter_merge_defaults(struct filter *f)
380 {
381 int db;
382 int af;
383
384 for (db = 0; db < MAX_DB; db++) {
385 if (!(f->dbs & (1 << db)))
386 continue;
387
388 if (!(default_dbs[db].families & f->families))
389 f->families |= default_dbs[db].families;
390 }
391 for (af = 0; af < AF_MAX; af++) {
392 if (!(f->families & FAMILY_MASK(af)))
393 continue;
394
395 if (!(default_afs[af].dbs & f->dbs))
396 f->dbs |= default_afs[af].dbs;
397 }
398 }
399
400 static FILE *generic_proc_open(const char *env, const char *name)
401 {
402 const char *p = getenv(env);
403 char store[128];
404
405 if (!p) {
406 p = getenv("PROC_ROOT") ? : "/proc";
407 snprintf(store, sizeof(store)-1, "%s/%s", p, name);
408 p = store;
409 }
410
411 return fopen(p, "r");
412 }
413 #define net_tcp_open() generic_proc_open("PROC_NET_TCP", "net/tcp")
414 #define net_tcp6_open() generic_proc_open("PROC_NET_TCP6", "net/tcp6")
415 #define net_udp_open() generic_proc_open("PROC_NET_UDP", "net/udp")
416 #define net_udp6_open() generic_proc_open("PROC_NET_UDP6", "net/udp6")
417 #define net_raw_open() generic_proc_open("PROC_NET_RAW", "net/raw")
418 #define net_raw6_open() generic_proc_open("PROC_NET_RAW6", "net/raw6")
419 #define net_unix_open() generic_proc_open("PROC_NET_UNIX", "net/unix")
420 #define net_packet_open() generic_proc_open("PROC_NET_PACKET", \
421 "net/packet")
422 #define net_netlink_open() generic_proc_open("PROC_NET_NETLINK", \
423 "net/netlink")
424 #define slabinfo_open() generic_proc_open("PROC_SLABINFO", "slabinfo")
425 #define net_sockstat_open() generic_proc_open("PROC_NET_SOCKSTAT", \
426 "net/sockstat")
427 #define net_sockstat6_open() generic_proc_open("PROC_NET_SOCKSTAT6", \
428 "net/sockstat6")
429 #define net_snmp_open() generic_proc_open("PROC_NET_SNMP", "net/snmp")
430 #define ephemeral_ports_open() generic_proc_open("PROC_IP_LOCAL_PORT_RANGE", \
431 "sys/net/ipv4/ip_local_port_range")
432
433 struct user_ent {
434 struct user_ent *next;
435 unsigned int ino;
436 int pid;
437 int fd;
438 char *process;
439 char *process_ctx;
440 char *socket_ctx;
441 };
442
443 #define USER_ENT_HASH_SIZE 256
444 struct user_ent *user_ent_hash[USER_ENT_HASH_SIZE];
445
446 static int user_ent_hashfn(unsigned int ino)
447 {
448 int val = (ino >> 24) ^ (ino >> 16) ^ (ino >> 8) ^ ino;
449
450 return val & (USER_ENT_HASH_SIZE - 1);
451 }
452
453 static void user_ent_add(unsigned int ino, char *process,
454 int pid, int fd,
455 char *proc_ctx,
456 char *sock_ctx)
457 {
458 struct user_ent *p, **pp;
459
460 p = malloc(sizeof(struct user_ent));
461 if (!p) {
462 fprintf(stderr, "ss: failed to malloc buffer\n");
463 abort();
464 }
465 p->next = NULL;
466 p->ino = ino;
467 p->pid = pid;
468 p->fd = fd;
469 p->process = strdup(process);
470 p->process_ctx = strdup(proc_ctx);
471 p->socket_ctx = strdup(sock_ctx);
472
473 pp = &user_ent_hash[user_ent_hashfn(ino)];
474 p->next = *pp;
475 *pp = p;
476 }
477
478 static void user_ent_destroy(void)
479 {
480 struct user_ent *p, *p_next;
481 int cnt = 0;
482
483 while (cnt != USER_ENT_HASH_SIZE) {
484 p = user_ent_hash[cnt];
485 while (p) {
486 free(p->process);
487 free(p->process_ctx);
488 free(p->socket_ctx);
489 p_next = p->next;
490 free(p);
491 p = p_next;
492 }
493 cnt++;
494 }
495 }
496
497 static void user_ent_hash_build(void)
498 {
499 const char *root = getenv("PROC_ROOT") ? : "/proc/";
500 struct dirent *d;
501 char name[1024];
502 int nameoff;
503 DIR *dir;
504 char *pid_context;
505 char *sock_context;
506 const char *no_ctx = "unavailable";
507 static int user_ent_hash_build_init;
508
509 /* If show_users & show_proc_ctx set only do this once */
510 if (user_ent_hash_build_init != 0)
511 return;
512
513 user_ent_hash_build_init = 1;
514
515 strlcpy(name, root, sizeof(name));
516
517 if (strlen(name) == 0 || name[strlen(name)-1] != '/')
518 strcat(name, "/");
519
520 nameoff = strlen(name);
521
522 dir = opendir(name);
523 if (!dir)
524 return;
525
526 while ((d = readdir(dir)) != NULL) {
527 struct dirent *d1;
528 char process[16];
529 char *p;
530 int pid, pos;
531 DIR *dir1;
532 char crap;
533
534 if (sscanf(d->d_name, "%d%c", &pid, &crap) != 1)
535 continue;
536
537 if (getpidcon(pid, &pid_context) != 0)
538 pid_context = strdup(no_ctx);
539
540 snprintf(name + nameoff, sizeof(name) - nameoff, "%d/fd/", pid);
541 pos = strlen(name);
542 if ((dir1 = opendir(name)) == NULL) {
543 free(pid_context);
544 continue;
545 }
546
547 process[0] = '\0';
548 p = process;
549
550 while ((d1 = readdir(dir1)) != NULL) {
551 const char *pattern = "socket:[";
552 unsigned int ino;
553 char lnk[64];
554 int fd;
555 ssize_t link_len;
556 char tmp[1024];
557
558 if (sscanf(d1->d_name, "%d%c", &fd, &crap) != 1)
559 continue;
560
561 snprintf(name+pos, sizeof(name) - pos, "%d", fd);
562
563 link_len = readlink(name, lnk, sizeof(lnk)-1);
564 if (link_len == -1)
565 continue;
566 lnk[link_len] = '\0';
567
568 if (strncmp(lnk, pattern, strlen(pattern)))
569 continue;
570
571 sscanf(lnk, "socket:[%u]", &ino);
572
573 snprintf(tmp, sizeof(tmp), "%s/%d/fd/%s",
574 root, pid, d1->d_name);
575
576 if (getfilecon(tmp, &sock_context) <= 0)
577 sock_context = strdup(no_ctx);
578
579 if (*p == '\0') {
580 FILE *fp;
581
582 snprintf(tmp, sizeof(tmp), "%s/%d/stat",
583 root, pid);
584 if ((fp = fopen(tmp, "r")) != NULL) {
585 if (fscanf(fp, "%*d (%[^)])", p) < 1)
586 ; /* ignore */
587 fclose(fp);
588 }
589 }
590 user_ent_add(ino, p, pid, fd,
591 pid_context, sock_context);
592 free(sock_context);
593 }
594 free(pid_context);
595 closedir(dir1);
596 }
597 closedir(dir);
598 }
599
600 enum entry_types {
601 USERS,
602 PROC_CTX,
603 PROC_SOCK_CTX
604 };
605
606 #define ENTRY_BUF_SIZE 512
607 static int find_entry(unsigned int ino, char **buf, int type)
608 {
609 struct user_ent *p;
610 int cnt = 0;
611 char *ptr;
612 char *new_buf;
613 int len, new_buf_len;
614 int buf_used = 0;
615 int buf_len = 0;
616
617 if (!ino)
618 return 0;
619
620 p = user_ent_hash[user_ent_hashfn(ino)];
621 ptr = *buf = NULL;
622 while (p) {
623 if (p->ino != ino)
624 goto next;
625
626 while (1) {
627 ptr = *buf + buf_used;
628 switch (type) {
629 case USERS:
630 len = snprintf(ptr, buf_len - buf_used,
631 "(\"%s\",pid=%d,fd=%d),",
632 p->process, p->pid, p->fd);
633 break;
634 case PROC_CTX:
635 len = snprintf(ptr, buf_len - buf_used,
636 "(\"%s\",pid=%d,proc_ctx=%s,fd=%d),",
637 p->process, p->pid,
638 p->process_ctx, p->fd);
639 break;
640 case PROC_SOCK_CTX:
641 len = snprintf(ptr, buf_len - buf_used,
642 "(\"%s\",pid=%d,proc_ctx=%s,fd=%d,sock_ctx=%s),",
643 p->process, p->pid,
644 p->process_ctx, p->fd,
645 p->socket_ctx);
646 break;
647 default:
648 fprintf(stderr, "ss: invalid type: %d\n", type);
649 abort();
650 }
651
652 if (len < 0 || len >= buf_len - buf_used) {
653 new_buf_len = buf_len + ENTRY_BUF_SIZE;
654 new_buf = realloc(*buf, new_buf_len);
655 if (!new_buf) {
656 fprintf(stderr, "ss: failed to malloc buffer\n");
657 abort();
658 }
659 *buf = new_buf;
660 buf_len = new_buf_len;
661 continue;
662 } else {
663 buf_used += len;
664 break;
665 }
666 }
667 cnt++;
668 next:
669 p = p->next;
670 }
671 if (buf_used) {
672 ptr = *buf + buf_used;
673 ptr[-1] = '\0';
674 }
675 return cnt;
676 }
677
678 /* Get stats from slab */
679
680 struct slabstat {
681 int socks;
682 int tcp_ports;
683 int tcp_tws;
684 int tcp_syns;
685 int skbs;
686 };
687
688 static struct slabstat slabstat;
689
690 static int get_slabstat(struct slabstat *s)
691 {
692 char buf[256];
693 FILE *fp;
694 int cnt;
695 static int slabstat_valid;
696 static const char * const slabstat_ids[] = {
697 "sock",
698 "tcp_bind_bucket",
699 "tcp_tw_bucket",
700 "tcp_open_request",
701 "skbuff_head_cache",
702 };
703
704 if (slabstat_valid)
705 return 0;
706
707 memset(s, 0, sizeof(*s));
708
709 fp = slabinfo_open();
710 if (!fp)
711 return -1;
712
713 cnt = sizeof(*s)/sizeof(int);
714
715 if (!fgets(buf, sizeof(buf), fp)) {
716 fclose(fp);
717 return -1;
718 }
719 while (fgets(buf, sizeof(buf), fp) != NULL) {
720 int i;
721
722 for (i = 0; i < ARRAY_SIZE(slabstat_ids); i++) {
723 if (memcmp(buf, slabstat_ids[i], strlen(slabstat_ids[i])) == 0) {
724 sscanf(buf, "%*s%d", ((int *)s) + i);
725 cnt--;
726 break;
727 }
728 }
729 if (cnt <= 0)
730 break;
731 }
732
733 slabstat_valid = 1;
734
735 fclose(fp);
736 return 0;
737 }
738
739 static unsigned long long cookie_sk_get(const uint32_t *cookie)
740 {
741 return (((unsigned long long)cookie[1] << 31) << 1) | cookie[0];
742 }
743
744 static const char *sctp_sstate_name[] = {
745 [SCTP_STATE_CLOSED] = "CLOSED",
746 [SCTP_STATE_COOKIE_WAIT] = "COOKIE_WAIT",
747 [SCTP_STATE_COOKIE_ECHOED] = "COOKIE_ECHOED",
748 [SCTP_STATE_ESTABLISHED] = "ESTAB",
749 [SCTP_STATE_SHUTDOWN_PENDING] = "SHUTDOWN_PENDING",
750 [SCTP_STATE_SHUTDOWN_SENT] = "SHUTDOWN_SENT",
751 [SCTP_STATE_SHUTDOWN_RECEIVED] = "SHUTDOWN_RECEIVED",
752 [SCTP_STATE_SHUTDOWN_ACK_SENT] = "ACK_SENT",
753 };
754
755 struct sockstat {
756 struct sockstat *next;
757 unsigned int type;
758 uint16_t prot;
759 uint16_t raw_prot;
760 inet_prefix local;
761 inet_prefix remote;
762 int lport;
763 int rport;
764 int state;
765 int rq, wq;
766 unsigned int ino;
767 unsigned int uid;
768 int refcnt;
769 unsigned int iface;
770 unsigned long long sk;
771 char *name;
772 char *peer_name;
773 __u32 mark;
774 };
775
776 struct dctcpstat {
777 unsigned int ce_state;
778 unsigned int alpha;
779 unsigned int ab_ecn;
780 unsigned int ab_tot;
781 bool enabled;
782 };
783
784 struct tcpstat {
785 struct sockstat ss;
786 unsigned int timer;
787 unsigned int timeout;
788 int probes;
789 char cong_alg[16];
790 double rto, ato, rtt, rttvar;
791 int qack, ssthresh, backoff;
792 double send_bps;
793 int snd_wscale;
794 int rcv_wscale;
795 int mss;
796 int rcv_mss;
797 int advmss;
798 unsigned int pmtu;
799 unsigned int cwnd;
800 unsigned int lastsnd;
801 unsigned int lastrcv;
802 unsigned int lastack;
803 double pacing_rate;
804 double pacing_rate_max;
805 double delivery_rate;
806 unsigned long long bytes_acked;
807 unsigned long long bytes_received;
808 unsigned int segs_out;
809 unsigned int segs_in;
810 unsigned int data_segs_out;
811 unsigned int data_segs_in;
812 unsigned int unacked;
813 unsigned int retrans;
814 unsigned int retrans_total;
815 unsigned int lost;
816 unsigned int sacked;
817 unsigned int fackets;
818 unsigned int reordering;
819 unsigned int not_sent;
820 double rcv_rtt;
821 double min_rtt;
822 int rcv_space;
823 unsigned int rcv_ssthresh;
824 unsigned long long busy_time;
825 unsigned long long rwnd_limited;
826 unsigned long long sndbuf_limited;
827 bool has_ts_opt;
828 bool has_sack_opt;
829 bool has_ecn_opt;
830 bool has_ecnseen_opt;
831 bool has_fastopen_opt;
832 bool has_wscale_opt;
833 bool app_limited;
834 struct dctcpstat *dctcp;
835 struct tcp_bbr_info *bbr_info;
836 };
837
838 /* SCTP assocs share the same inode number with their parent endpoint. So if we
839 * have seen the inode number before, it must be an assoc instead of the next
840 * endpoint. */
841 static bool is_sctp_assoc(struct sockstat *s, const char *sock_name)
842 {
843 if (strcmp(sock_name, "sctp"))
844 return false;
845 if (!sctp_ino || sctp_ino != s->ino)
846 return false;
847 return true;
848 }
849
850 static const char *unix_netid_name(int type)
851 {
852 switch (type) {
853 case SOCK_STREAM:
854 return "u_str";
855 case SOCK_SEQPACKET:
856 return "u_seq";
857 case SOCK_DGRAM:
858 default:
859 return "u_dgr";
860 }
861 }
862
863 static const char *proto_name(int protocol)
864 {
865 switch (protocol) {
866 case 0:
867 return "raw";
868 case IPPROTO_UDP:
869 return "udp";
870 case IPPROTO_TCP:
871 return "tcp";
872 case IPPROTO_SCTP:
873 return "sctp";
874 case IPPROTO_DCCP:
875 return "dccp";
876 case IPPROTO_ICMPV6:
877 return "icmp6";
878 }
879
880 return "???";
881 }
882
883 static const char *vsock_netid_name(int type)
884 {
885 switch (type) {
886 case SOCK_STREAM:
887 return "v_str";
888 case SOCK_DGRAM:
889 return "v_dgr";
890 default:
891 return "???";
892 }
893 }
894
895 /* Allocate and initialize a new buffer chunk */
896 static struct buf_chunk *buf_chunk_new(void)
897 {
898 struct buf_chunk *new = malloc(BUF_CHUNK);
899
900 if (!new)
901 abort();
902
903 new->next = NULL;
904
905 /* This is also the last block */
906 buffer.tail = new;
907
908 /* Next token will be stored at the beginning of chunk data area, and
909 * its initial length is zero.
910 */
911 buffer.cur = (struct buf_token *)new->data;
912 buffer.cur->len = 0;
913
914 new->end = buffer.cur->data;
915
916 return new;
917 }
918
919 /* Return available tail room in given chunk */
920 static int buf_chunk_avail(struct buf_chunk *chunk)
921 {
922 return BUF_CHUNK - offsetof(struct buf_chunk, data) -
923 (chunk->end - chunk->data);
924 }
925
926 /* Update end pointer and token length, link new chunk if we hit the end of the
927 * current one. Return -EAGAIN if we got a new chunk, caller has to print again.
928 */
929 static int buf_update(int len)
930 {
931 struct buf_chunk *chunk = buffer.tail;
932 struct buf_token *t = buffer.cur;
933
934 /* Claim success if new content fits in the current chunk, and anyway
935 * if this is the first token in the chunk: in the latter case,
936 * allocating a new chunk won't help, so we'll just cut the output.
937 */
938 if ((len < buf_chunk_avail(chunk) && len != -1 /* glibc < 2.0.6 */) ||
939 t == (struct buf_token *)chunk->data) {
940 len = min(len, buf_chunk_avail(chunk));
941
942 /* Total field length can't exceed 2^16 bytes, cut as needed */
943 len = min(len, USHRT_MAX - t->len);
944
945 chunk->end += len;
946 t->len += len;
947 return 0;
948 }
949
950 /* Content truncated, time to allocate more */
951 chunk->next = buf_chunk_new();
952
953 /* Copy current token over to new chunk, including length descriptor */
954 memcpy(chunk->next->data, t, sizeof(t->len) + t->len);
955 chunk->next->end += t->len;
956
957 /* Discard partially written field in old chunk */
958 chunk->end -= t->len + sizeof(t->len);
959
960 return -EAGAIN;
961 }
962
963 /* Append content to buffer as part of the current field */
964 static void out(const char *fmt, ...)
965 {
966 struct column *f = current_field;
967 va_list args;
968 char *pos;
969 int len;
970
971 if (f->disabled)
972 return;
973
974 if (!buffer.head)
975 buffer.head = buf_chunk_new();
976
977 again: /* Append to buffer: if we have a new chunk, print again */
978
979 pos = buffer.cur->data + buffer.cur->len;
980 va_start(args, fmt);
981
982 /* Limit to tail room. If we hit the limit, buf_update() will tell us */
983 len = vsnprintf(pos, buf_chunk_avail(buffer.tail), fmt, args);
984 va_end(args);
985
986 if (buf_update(len))
987 goto again;
988 }
989
990 static int print_left_spacing(struct column *f, int stored, int printed)
991 {
992 int s;
993
994 if (!f->width || f->align == ALIGN_LEFT)
995 return 0;
996
997 s = f->width - stored - printed;
998 if (f->align == ALIGN_CENTER)
999 /* If count of total spacing is odd, shift right by one */
1000 s = (s + 1) / 2;
1001
1002 if (s > 0)
1003 return printf("%*c", s, ' ');
1004
1005 return 0;
1006 }
1007
1008 static void print_right_spacing(struct column *f, int printed)
1009 {
1010 int s;
1011
1012 if (!f->width || f->align == ALIGN_RIGHT)
1013 return;
1014
1015 s = f->width - printed;
1016 if (f->align == ALIGN_CENTER)
1017 s /= 2;
1018
1019 if (s > 0)
1020 printf("%*c", s, ' ');
1021 }
1022
1023 /* Done with field: update buffer pointer, start new token after current one */
1024 static void field_flush(struct column *f)
1025 {
1026 struct buf_chunk *chunk;
1027 unsigned int pad;
1028
1029 if (f->disabled)
1030 return;
1031
1032 chunk = buffer.tail;
1033 pad = buffer.cur->len % 2;
1034
1035 if (buffer.cur->len > f->max_len)
1036 f->max_len = buffer.cur->len;
1037
1038 /* We need a new chunk if we can't store the next length descriptor.
1039 * Mind the gap between end of previous token and next aligned position
1040 * for length descriptor.
1041 */
1042 if (buf_chunk_avail(chunk) - pad < sizeof(buffer.cur->len)) {
1043 chunk->end += pad;
1044 chunk->next = buf_chunk_new();
1045 return;
1046 }
1047
1048 buffer.cur = (struct buf_token *)(buffer.cur->data +
1049 LEN_ALIGN(buffer.cur->len));
1050 buffer.cur->len = 0;
1051 buffer.tail->end = buffer.cur->data;
1052 }
1053
1054 static int field_is_last(struct column *f)
1055 {
1056 return f - columns == COL_MAX - 1;
1057 }
1058
1059 static void field_next(void)
1060 {
1061 field_flush(current_field);
1062
1063 if (field_is_last(current_field))
1064 current_field = columns;
1065 else
1066 current_field++;
1067 }
1068
1069 /* Walk through fields and flush them until we reach the desired one */
1070 static void field_set(enum col_id id)
1071 {
1072 while (id != current_field - columns)
1073 field_next();
1074 }
1075
1076 /* Print header for all non-empty columns */
1077 static void print_header(void)
1078 {
1079 while (!field_is_last(current_field)) {
1080 if (!current_field->disabled)
1081 out(current_field->header);
1082 field_next();
1083 }
1084 }
1085
1086 /* Get the next available token in the buffer starting from the current token */
1087 static struct buf_token *buf_token_next(struct buf_token *cur)
1088 {
1089 struct buf_chunk *chunk = buffer.tail;
1090
1091 /* If we reached the end of chunk contents, get token from next chunk */
1092 if (cur->data + LEN_ALIGN(cur->len) == chunk->end) {
1093 buffer.tail = chunk = chunk->next;
1094 return chunk ? (struct buf_token *)chunk->data : NULL;
1095 }
1096
1097 return (struct buf_token *)(cur->data + LEN_ALIGN(cur->len));
1098 }
1099
1100 /* Free up all allocated buffer chunks */
1101 static void buf_free_all(void)
1102 {
1103 struct buf_chunk *tmp;
1104
1105 for (buffer.tail = buffer.head; buffer.tail; ) {
1106 tmp = buffer.tail;
1107 buffer.tail = buffer.tail->next;
1108 free(tmp);
1109 }
1110 buffer.head = NULL;
1111 }
1112
1113 /* Get current screen width, default to 80 columns if TIOCGWINSZ fails */
1114 static int render_screen_width(void)
1115 {
1116 int width = 80;
1117
1118 if (isatty(STDOUT_FILENO)) {
1119 struct winsize w;
1120
1121 if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != -1) {
1122 if (w.ws_col > 0)
1123 width = w.ws_col;
1124 }
1125 }
1126
1127 return width;
1128 }
1129
1130 /* Calculate column width from contents length. If columns don't fit on one
1131 * line, break them into the least possible amount of lines and keep them
1132 * aligned across lines. Available screen space is equally spread between fields
1133 * as additional spacing.
1134 */
1135 static void render_calc_width(void)
1136 {
1137 int screen_width = render_screen_width();
1138 struct column *c, *eol = columns - 1;
1139 int first, len = 0, linecols = 0;
1140
1141 /* First pass: set width for each column to measured content length */
1142 for (first = 1, c = columns; c - columns < COL_MAX; c++) {
1143 if (c->disabled)
1144 continue;
1145
1146 if (!first && c->max_len)
1147 c->width = c->max_len + strlen(c->ldelim);
1148 else
1149 c->width = c->max_len;
1150
1151 /* But don't exceed screen size. If we exceed the screen size
1152 * for even a single field, it will just start on a line of its
1153 * own and then naturally wrap.
1154 */
1155 c->width = min(c->width, screen_width);
1156
1157 if (c->width)
1158 first = 0;
1159 }
1160
1161 /* Second pass: find out newlines and distribute available spacing */
1162 for (c = columns; c - columns < COL_MAX; c++) {
1163 int pad, spacing, rem, last;
1164 struct column *tmp;
1165
1166 if (!c->width)
1167 continue;
1168
1169 linecols++;
1170 len += c->width;
1171
1172 for (last = 1, tmp = c + 1; tmp - columns < COL_MAX; tmp++) {
1173 if (tmp->width) {
1174 last = 0;
1175 break;
1176 }
1177 }
1178
1179 if (!last && len < screen_width) {
1180 /* Columns fit on screen so far, nothing to do yet */
1181 continue;
1182 }
1183
1184 if (len == screen_width) {
1185 /* Exact fit, just start with new line */
1186 goto newline;
1187 }
1188
1189 if (len > screen_width) {
1190 /* Screen width exceeded: go back one column */
1191 len -= c->width;
1192 c--;
1193 linecols--;
1194 }
1195
1196 /* Distribute remaining space to columns on this line */
1197 pad = screen_width - len;
1198 spacing = pad / linecols;
1199 rem = pad % linecols;
1200 for (tmp = c; tmp > eol; tmp--) {
1201 if (!tmp->width)
1202 continue;
1203
1204 tmp->width += spacing;
1205 if (rem) {
1206 tmp->width++;
1207 rem--;
1208 }
1209 }
1210
1211 newline:
1212 /* Line break: reset line counters, mark end-of-line */
1213 eol = c;
1214 len = 0;
1215 linecols = 0;
1216 }
1217 }
1218
1219 /* Render buffered output with spacing and delimiters, then free up buffers */
1220 static void render(void)
1221 {
1222 struct buf_token *token;
1223 int printed, line_started = 0;
1224 struct column *f;
1225
1226 if (!buffer.head)
1227 return;
1228
1229 token = (struct buf_token *)buffer.head->data;
1230
1231 /* Ensure end alignment of last token, it wasn't necessarily flushed */
1232 buffer.tail->end += buffer.cur->len % 2;
1233
1234 render_calc_width();
1235
1236 /* Rewind and replay */
1237 buffer.tail = buffer.head;
1238
1239 f = columns;
1240 while (!f->width)
1241 f++;
1242
1243 while (token) {
1244 /* Print left delimiter only if we already started a line */
1245 if (line_started++)
1246 printed = printf("%s", current_field->ldelim);
1247 else
1248 printed = 0;
1249
1250 /* Print field content from token data with spacing */
1251 printed += print_left_spacing(f, token->len, printed);
1252 printed += fwrite(token->data, 1, token->len, stdout);
1253 print_right_spacing(f, printed);
1254
1255 /* Go to next non-empty field, deal with end-of-line */
1256 do {
1257 if (field_is_last(f)) {
1258 printf("\n");
1259 f = columns;
1260 line_started = 0;
1261 } else {
1262 f++;
1263 }
1264 } while (f->disabled);
1265
1266 token = buf_token_next(token);
1267 }
1268
1269 buf_free_all();
1270 current_field = columns;
1271 }
1272
1273 static void sock_state_print(struct sockstat *s)
1274 {
1275 const char *sock_name;
1276 static const char * const sstate_name[] = {
1277 "UNKNOWN",
1278 [SS_ESTABLISHED] = "ESTAB",
1279 [SS_SYN_SENT] = "SYN-SENT",
1280 [SS_SYN_RECV] = "SYN-RECV",
1281 [SS_FIN_WAIT1] = "FIN-WAIT-1",
1282 [SS_FIN_WAIT2] = "FIN-WAIT-2",
1283 [SS_TIME_WAIT] = "TIME-WAIT",
1284 [SS_CLOSE] = "UNCONN",
1285 [SS_CLOSE_WAIT] = "CLOSE-WAIT",
1286 [SS_LAST_ACK] = "LAST-ACK",
1287 [SS_LISTEN] = "LISTEN",
1288 [SS_CLOSING] = "CLOSING",
1289 };
1290
1291 switch (s->local.family) {
1292 case AF_UNIX:
1293 sock_name = unix_netid_name(s->type);
1294 break;
1295 case AF_INET:
1296 case AF_INET6:
1297 sock_name = proto_name(s->type);
1298 break;
1299 case AF_PACKET:
1300 sock_name = s->type == SOCK_RAW ? "p_raw" : "p_dgr";
1301 break;
1302 case AF_NETLINK:
1303 sock_name = "nl";
1304 break;
1305 case AF_VSOCK:
1306 sock_name = vsock_netid_name(s->type);
1307 break;
1308 default:
1309 sock_name = "unknown";
1310 }
1311
1312 if (is_sctp_assoc(s, sock_name)) {
1313 field_set(COL_STATE); /* Empty Netid field */
1314 out("`- %s", sctp_sstate_name[s->state]);
1315 } else {
1316 field_set(COL_NETID);
1317 out("%s", sock_name);
1318 field_set(COL_STATE);
1319 out("%s", sstate_name[s->state]);
1320 }
1321
1322 field_set(COL_RECVQ);
1323 out("%-6d", s->rq);
1324 field_set(COL_SENDQ);
1325 out("%-6d", s->wq);
1326 field_set(COL_ADDR);
1327 }
1328
1329 static void sock_details_print(struct sockstat *s)
1330 {
1331 if (s->uid)
1332 out(" uid:%u", s->uid);
1333
1334 out(" ino:%u", s->ino);
1335 out(" sk:%llx", s->sk);
1336
1337 if (s->mark)
1338 out(" fwmark:0x%x", s->mark);
1339 }
1340
1341 static void sock_addr_print(const char *addr, char *delim, const char *port,
1342 const char *ifname)
1343 {
1344 if (ifname)
1345 out("%s" "%%" "%s%s", addr, ifname, delim);
1346 else
1347 out("%s%s", addr, delim);
1348
1349 field_next();
1350 out("%s", port);
1351 field_next();
1352 }
1353
1354 static const char *print_ms_timer(unsigned int timeout)
1355 {
1356 static char buf[64];
1357 int secs, msecs, minutes;
1358
1359 secs = timeout/1000;
1360 minutes = secs/60;
1361 secs = secs%60;
1362 msecs = timeout%1000;
1363 buf[0] = 0;
1364 if (minutes) {
1365 msecs = 0;
1366 snprintf(buf, sizeof(buf)-16, "%dmin", minutes);
1367 if (minutes > 9)
1368 secs = 0;
1369 }
1370 if (secs) {
1371 if (secs > 9)
1372 msecs = 0;
1373 sprintf(buf+strlen(buf), "%d%s", secs, msecs ? "." : "sec");
1374 }
1375 if (msecs)
1376 sprintf(buf+strlen(buf), "%03dms", msecs);
1377 return buf;
1378 }
1379
1380 struct scache {
1381 struct scache *next;
1382 int port;
1383 char *name;
1384 const char *proto;
1385 };
1386
1387 struct scache *rlist;
1388
1389 static void init_service_resolver(void)
1390 {
1391 char buf[128];
1392 FILE *fp = popen("/usr/sbin/rpcinfo -p 2>/dev/null", "r");
1393
1394 if (!fp)
1395 return;
1396
1397 if (!fgets(buf, sizeof(buf), fp)) {
1398 pclose(fp);
1399 return;
1400 }
1401 while (fgets(buf, sizeof(buf), fp) != NULL) {
1402 unsigned int progn, port;
1403 char proto[128], prog[128] = "rpc.";
1404 struct scache *c;
1405
1406 if (sscanf(buf, "%u %*d %s %u %s",
1407 &progn, proto, &port, prog+4) != 4)
1408 continue;
1409
1410 if (!(c = malloc(sizeof(*c))))
1411 continue;
1412
1413 c->port = port;
1414 c->name = strdup(prog);
1415 if (strcmp(proto, TCP_PROTO) == 0)
1416 c->proto = TCP_PROTO;
1417 else if (strcmp(proto, UDP_PROTO) == 0)
1418 c->proto = UDP_PROTO;
1419 else if (strcmp(proto, SCTP_PROTO) == 0)
1420 c->proto = SCTP_PROTO;
1421 else
1422 c->proto = NULL;
1423 c->next = rlist;
1424 rlist = c;
1425 }
1426 pclose(fp);
1427 }
1428
1429 /* Even do not try default linux ephemeral port ranges:
1430 * default /etc/services contains so much of useless crap
1431 * wouldbe "allocated" to this area that resolution
1432 * is really harmful. I shrug each time when seeing
1433 * "socks" or "cfinger" in dumps.
1434 */
1435 static int is_ephemeral(int port)
1436 {
1437 static int min = 0, max;
1438
1439 if (!min) {
1440 FILE *f = ephemeral_ports_open();
1441
1442 if (!f || fscanf(f, "%d %d", &min, &max) < 2) {
1443 min = 1024;
1444 max = 4999;
1445 }
1446 if (f)
1447 fclose(f);
1448 }
1449 return port >= min && port <= max;
1450 }
1451
1452
1453 static const char *__resolve_service(int port)
1454 {
1455 struct scache *c;
1456
1457 for (c = rlist; c; c = c->next) {
1458 if (c->port == port && c->proto == dg_proto)
1459 return c->name;
1460 }
1461
1462 if (!is_ephemeral(port)) {
1463 static int notfirst;
1464 struct servent *se;
1465
1466 if (!notfirst) {
1467 setservent(1);
1468 notfirst = 1;
1469 }
1470 se = getservbyport(htons(port), dg_proto);
1471 if (se)
1472 return se->s_name;
1473 }
1474
1475 return NULL;
1476 }
1477
1478 #define SCACHE_BUCKETS 1024
1479 static struct scache *cache_htab[SCACHE_BUCKETS];
1480
1481 static const char *resolve_service(int port)
1482 {
1483 static char buf[128];
1484 struct scache *c;
1485 const char *res;
1486 int hash;
1487
1488 if (port == 0) {
1489 buf[0] = '*';
1490 buf[1] = 0;
1491 return buf;
1492 }
1493
1494 if (!resolve_services)
1495 goto do_numeric;
1496
1497 if (dg_proto == RAW_PROTO)
1498 return inet_proto_n2a(port, buf, sizeof(buf));
1499
1500
1501 hash = (port^(((unsigned long)dg_proto)>>2)) % SCACHE_BUCKETS;
1502
1503 for (c = cache_htab[hash]; c; c = c->next) {
1504 if (c->port == port && c->proto == dg_proto)
1505 goto do_cache;
1506 }
1507
1508 c = malloc(sizeof(*c));
1509 if (!c)
1510 goto do_numeric;
1511 res = __resolve_service(port);
1512 c->port = port;
1513 c->name = res ? strdup(res) : NULL;
1514 c->proto = dg_proto;
1515 c->next = cache_htab[hash];
1516 cache_htab[hash] = c;
1517
1518 do_cache:
1519 if (c->name)
1520 return c->name;
1521
1522 do_numeric:
1523 sprintf(buf, "%u", port);
1524 return buf;
1525 }
1526
1527 static void inet_addr_print(const inet_prefix *a, int port,
1528 unsigned int ifindex, bool v6only)
1529 {
1530 char buf[1024];
1531 const char *ap = buf;
1532 const char *ifname = NULL;
1533
1534 if (a->family == AF_INET) {
1535 ap = format_host(AF_INET, 4, a->data);
1536 } else {
1537 if (!v6only &&
1538 !memcmp(a->data, &in6addr_any, sizeof(in6addr_any))) {
1539 buf[0] = '*';
1540 buf[1] = 0;
1541 } else {
1542 ap = format_host(a->family, 16, a->data);
1543
1544 /* Numeric IPv6 addresses should be bracketed */
1545 if (strchr(ap, ':')) {
1546 snprintf(buf, sizeof(buf),
1547 "[%s]", ap);
1548 ap = buf;
1549 }
1550 }
1551 }
1552
1553 if (ifindex)
1554 ifname = ll_index_to_name(ifindex);
1555
1556 sock_addr_print(ap, ":", resolve_service(port), ifname);
1557 }
1558
1559 struct aafilter {
1560 inet_prefix addr;
1561 int port;
1562 unsigned int iface;
1563 __u32 mark;
1564 __u32 mask;
1565 struct aafilter *next;
1566 };
1567
1568 static int inet2_addr_match(const inet_prefix *a, const inet_prefix *p,
1569 int plen)
1570 {
1571 if (!inet_addr_match(a, p, plen))
1572 return 0;
1573
1574 /* Cursed "v4 mapped" addresses: v4 mapped socket matches
1575 * pure IPv4 rule, but v4-mapped rule selects only v4-mapped
1576 * sockets. Fair? */
1577 if (p->family == AF_INET && a->family == AF_INET6) {
1578 if (a->data[0] == 0 && a->data[1] == 0 &&
1579 a->data[2] == htonl(0xffff)) {
1580 inet_prefix tmp = *a;
1581
1582 tmp.data[0] = a->data[3];
1583 return inet_addr_match(&tmp, p, plen);
1584 }
1585 }
1586 return 1;
1587 }
1588
1589 static int unix_match(const inet_prefix *a, const inet_prefix *p)
1590 {
1591 char *addr, *pattern;
1592
1593 memcpy(&addr, a->data, sizeof(addr));
1594 memcpy(&pattern, p->data, sizeof(pattern));
1595 if (pattern == NULL)
1596 return 1;
1597 if (addr == NULL)
1598 addr = "";
1599 return !fnmatch(pattern, addr, 0);
1600 }
1601
1602 static int run_ssfilter(struct ssfilter *f, struct sockstat *s)
1603 {
1604 switch (f->type) {
1605 case SSF_S_AUTO:
1606 {
1607 if (s->local.family == AF_UNIX) {
1608 char *p;
1609
1610 memcpy(&p, s->local.data, sizeof(p));
1611 return p == NULL || (p[0] == '@' && strlen(p) == 6 &&
1612 strspn(p+1, "0123456789abcdef") == 5);
1613 }
1614 if (s->local.family == AF_PACKET)
1615 return s->lport == 0 && s->local.data[0] == 0;
1616 if (s->local.family == AF_NETLINK)
1617 return s->lport < 0;
1618 if (s->local.family == AF_VSOCK)
1619 return s->lport > 1023;
1620
1621 return is_ephemeral(s->lport);
1622 }
1623 case SSF_DCOND:
1624 {
1625 struct aafilter *a = (void *)f->pred;
1626
1627 if (a->addr.family == AF_UNIX)
1628 return unix_match(&s->remote, &a->addr);
1629 if (a->port != -1 && a->port != s->rport)
1630 return 0;
1631 if (a->addr.bitlen) {
1632 do {
1633 if (!inet2_addr_match(&s->remote, &a->addr, a->addr.bitlen))
1634 return 1;
1635 } while ((a = a->next) != NULL);
1636 return 0;
1637 }
1638 return 1;
1639 }
1640 case SSF_SCOND:
1641 {
1642 struct aafilter *a = (void *)f->pred;
1643
1644 if (a->addr.family == AF_UNIX)
1645 return unix_match(&s->local, &a->addr);
1646 if (a->port != -1 && a->port != s->lport)
1647 return 0;
1648 if (a->addr.bitlen) {
1649 do {
1650 if (!inet2_addr_match(&s->local, &a->addr, a->addr.bitlen))
1651 return 1;
1652 } while ((a = a->next) != NULL);
1653 return 0;
1654 }
1655 return 1;
1656 }
1657 case SSF_D_GE:
1658 {
1659 struct aafilter *a = (void *)f->pred;
1660
1661 return s->rport >= a->port;
1662 }
1663 case SSF_D_LE:
1664 {
1665 struct aafilter *a = (void *)f->pred;
1666
1667 return s->rport <= a->port;
1668 }
1669 case SSF_S_GE:
1670 {
1671 struct aafilter *a = (void *)f->pred;
1672
1673 return s->lport >= a->port;
1674 }
1675 case SSF_S_LE:
1676 {
1677 struct aafilter *a = (void *)f->pred;
1678
1679 return s->lport <= a->port;
1680 }
1681 case SSF_DEVCOND:
1682 {
1683 struct aafilter *a = (void *)f->pred;
1684
1685 return s->iface == a->iface;
1686 }
1687 case SSF_MARKMASK:
1688 {
1689 struct aafilter *a = (void *)f->pred;
1690
1691 return (s->mark & a->mask) == a->mark;
1692 }
1693 /* Yup. It is recursion. Sorry. */
1694 case SSF_AND:
1695 return run_ssfilter(f->pred, s) && run_ssfilter(f->post, s);
1696 case SSF_OR:
1697 return run_ssfilter(f->pred, s) || run_ssfilter(f->post, s);
1698 case SSF_NOT:
1699 return !run_ssfilter(f->pred, s);
1700 default:
1701 abort();
1702 }
1703 }
1704
1705 /* Relocate external jumps by reloc. */
1706 static void ssfilter_patch(char *a, int len, int reloc)
1707 {
1708 while (len > 0) {
1709 struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)a;
1710
1711 if (op->no == len+4)
1712 op->no += reloc;
1713 len -= op->yes;
1714 a += op->yes;
1715 }
1716 if (len < 0)
1717 abort();
1718 }
1719
1720 static int ssfilter_bytecompile(struct ssfilter *f, char **bytecode)
1721 {
1722 switch (f->type) {
1723 case SSF_S_AUTO:
1724 {
1725 if (!(*bytecode = malloc(4))) abort();
1726 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_AUTO, 4, 8 };
1727 return 4;
1728 }
1729 case SSF_DCOND:
1730 case SSF_SCOND:
1731 {
1732 struct aafilter *a = (void *)f->pred;
1733 struct aafilter *b;
1734 char *ptr;
1735 int code = (f->type == SSF_DCOND ? INET_DIAG_BC_D_COND : INET_DIAG_BC_S_COND);
1736 int len = 0;
1737
1738 for (b = a; b; b = b->next) {
1739 len += 4 + sizeof(struct inet_diag_hostcond);
1740 if (a->addr.family == AF_INET6)
1741 len += 16;
1742 else
1743 len += 4;
1744 if (b->next)
1745 len += 4;
1746 }
1747 if (!(ptr = malloc(len))) abort();
1748 *bytecode = ptr;
1749 for (b = a; b; b = b->next) {
1750 struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)ptr;
1751 int alen = (a->addr.family == AF_INET6 ? 16 : 4);
1752 int oplen = alen + 4 + sizeof(struct inet_diag_hostcond);
1753 struct inet_diag_hostcond *cond = (struct inet_diag_hostcond *)(ptr+4);
1754
1755 *op = (struct inet_diag_bc_op){ code, oplen, oplen+4 };
1756 cond->family = a->addr.family;
1757 cond->port = a->port;
1758 cond->prefix_len = a->addr.bitlen;
1759 memcpy(cond->addr, a->addr.data, alen);
1760 ptr += oplen;
1761 if (b->next) {
1762 op = (struct inet_diag_bc_op *)ptr;
1763 *op = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, len - (ptr-*bytecode)};
1764 ptr += 4;
1765 }
1766 }
1767 return ptr - *bytecode;
1768 }
1769 case SSF_D_GE:
1770 {
1771 struct aafilter *x = (void *)f->pred;
1772
1773 if (!(*bytecode = malloc(8))) abort();
1774 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_GE, 8, 12 };
1775 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1776 return 8;
1777 }
1778 case SSF_D_LE:
1779 {
1780 struct aafilter *x = (void *)f->pred;
1781
1782 if (!(*bytecode = malloc(8))) abort();
1783 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_LE, 8, 12 };
1784 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1785 return 8;
1786 }
1787 case SSF_S_GE:
1788 {
1789 struct aafilter *x = (void *)f->pred;
1790
1791 if (!(*bytecode = malloc(8))) abort();
1792 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_GE, 8, 12 };
1793 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1794 return 8;
1795 }
1796 case SSF_S_LE:
1797 {
1798 struct aafilter *x = (void *)f->pred;
1799
1800 if (!(*bytecode = malloc(8))) abort();
1801 ((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_LE, 8, 12 };
1802 ((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
1803 return 8;
1804 }
1805
1806 case SSF_AND:
1807 {
1808 char *a1 = NULL, *a2 = NULL, *a;
1809 int l1, l2;
1810
1811 l1 = ssfilter_bytecompile(f->pred, &a1);
1812 l2 = ssfilter_bytecompile(f->post, &a2);
1813 if (!l1 || !l2) {
1814 free(a1);
1815 free(a2);
1816 return 0;
1817 }
1818 if (!(a = malloc(l1+l2))) abort();
1819 memcpy(a, a1, l1);
1820 memcpy(a+l1, a2, l2);
1821 free(a1); free(a2);
1822 ssfilter_patch(a, l1, l2);
1823 *bytecode = a;
1824 return l1+l2;
1825 }
1826 case SSF_OR:
1827 {
1828 char *a1 = NULL, *a2 = NULL, *a;
1829 int l1, l2;
1830
1831 l1 = ssfilter_bytecompile(f->pred, &a1);
1832 l2 = ssfilter_bytecompile(f->post, &a2);
1833 if (!l1 || !l2) {
1834 free(a1);
1835 free(a2);
1836 return 0;
1837 }
1838 if (!(a = malloc(l1+l2+4))) abort();
1839 memcpy(a, a1, l1);
1840 memcpy(a+l1+4, a2, l2);
1841 free(a1); free(a2);
1842 *(struct inet_diag_bc_op *)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, l2+4 };
1843 *bytecode = a;
1844 return l1+l2+4;
1845 }
1846 case SSF_NOT:
1847 {
1848 char *a1 = NULL, *a;
1849 int l1;
1850
1851 l1 = ssfilter_bytecompile(f->pred, &a1);
1852 if (!l1) {
1853 free(a1);
1854 return 0;
1855 }
1856 if (!(a = malloc(l1+4))) abort();
1857 memcpy(a, a1, l1);
1858 free(a1);
1859 *(struct inet_diag_bc_op *)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, 8 };
1860 *bytecode = a;
1861 return l1+4;
1862 }
1863 case SSF_DEVCOND:
1864 {
1865 /* bytecompile for SSF_DEVCOND not supported yet */
1866 return 0;
1867 }
1868 case SSF_MARKMASK:
1869 {
1870 struct aafilter *a = (void *)f->pred;
1871 struct instr {
1872 struct inet_diag_bc_op op;
1873 struct inet_diag_markcond cond;
1874 };
1875 int inslen = sizeof(struct instr);
1876
1877 if (!(*bytecode = malloc(inslen))) abort();
1878 ((struct instr *)*bytecode)[0] = (struct instr) {
1879 { INET_DIAG_BC_MARK_COND, inslen, inslen + 4 },
1880 { a->mark, a->mask},
1881 };
1882
1883 return inslen;
1884 }
1885 default:
1886 abort();
1887 }
1888 }
1889
1890 static int remember_he(struct aafilter *a, struct hostent *he)
1891 {
1892 char **ptr = he->h_addr_list;
1893 int cnt = 0;
1894 int len;
1895
1896 if (he->h_addrtype == AF_INET)
1897 len = 4;
1898 else if (he->h_addrtype == AF_INET6)
1899 len = 16;
1900 else
1901 return 0;
1902
1903 while (*ptr) {
1904 struct aafilter *b = a;
1905
1906 if (a->addr.bitlen) {
1907 if ((b = malloc(sizeof(*b))) == NULL)
1908 return cnt;
1909 *b = *a;
1910 a->next = b;
1911 }
1912 memcpy(b->addr.data, *ptr, len);
1913 b->addr.bytelen = len;
1914 b->addr.bitlen = len*8;
1915 b->addr.family = he->h_addrtype;
1916 ptr++;
1917 cnt++;
1918 }
1919 return cnt;
1920 }
1921
1922 static int get_dns_host(struct aafilter *a, const char *addr, int fam)
1923 {
1924 static int notfirst;
1925 int cnt = 0;
1926 struct hostent *he;
1927
1928 a->addr.bitlen = 0;
1929 if (!notfirst) {
1930 sethostent(1);
1931 notfirst = 1;
1932 }
1933 he = gethostbyname2(addr, fam == AF_UNSPEC ? AF_INET : fam);
1934 if (he)
1935 cnt = remember_he(a, he);
1936 if (fam == AF_UNSPEC) {
1937 he = gethostbyname2(addr, AF_INET6);
1938 if (he)
1939 cnt += remember_he(a, he);
1940 }
1941 return !cnt;
1942 }
1943
1944 static int xll_initted;
1945
1946 static void xll_init(void)
1947 {
1948 struct rtnl_handle rth;
1949
1950 if (rtnl_open(&rth, 0) < 0)
1951 exit(1);
1952
1953 ll_init_map(&rth);
1954 rtnl_close(&rth);
1955 xll_initted = 1;
1956 }
1957
1958 static const char *xll_index_to_name(int index)
1959 {
1960 if (!xll_initted)
1961 xll_init();
1962 return ll_index_to_name(index);
1963 }
1964
1965 static int xll_name_to_index(const char *dev)
1966 {
1967 if (!xll_initted)
1968 xll_init();
1969 return ll_name_to_index(dev);
1970 }
1971
1972 void *parse_devcond(char *name)
1973 {
1974 struct aafilter a = { .iface = 0 };
1975 struct aafilter *res;
1976
1977 a.iface = xll_name_to_index(name);
1978 if (a.iface == 0) {
1979 char *end;
1980 unsigned long n;
1981
1982 n = strtoul(name, &end, 0);
1983 if (!end || end == name || *end || n > UINT_MAX)
1984 return NULL;
1985
1986 a.iface = n;
1987 }
1988
1989 res = malloc(sizeof(*res));
1990 *res = a;
1991
1992 return res;
1993 }
1994
1995 static void vsock_set_inet_prefix(inet_prefix *a, __u32 cid)
1996 {
1997 *a = (inet_prefix){
1998 .bytelen = sizeof(cid),
1999 .family = AF_VSOCK,
2000 };
2001 memcpy(a->data, &cid, sizeof(cid));
2002 }
2003
2004 void *parse_hostcond(char *addr, bool is_port)
2005 {
2006 char *port = NULL;
2007 struct aafilter a = { .port = -1 };
2008 struct aafilter *res;
2009 int fam = preferred_family;
2010 struct filter *f = &current_filter;
2011
2012 if (fam == AF_UNIX || strncmp(addr, "unix:", 5) == 0) {
2013 char *p;
2014
2015 a.addr.family = AF_UNIX;
2016 if (strncmp(addr, "unix:", 5) == 0)
2017 addr += 5;
2018 p = strdup(addr);
2019 a.addr.bitlen = 8*strlen(p);
2020 memcpy(a.addr.data, &p, sizeof(p));
2021 fam = AF_UNIX;
2022 goto out;
2023 }
2024
2025 if (fam == AF_PACKET || strncmp(addr, "link:", 5) == 0) {
2026 a.addr.family = AF_PACKET;
2027 a.addr.bitlen = 0;
2028 if (strncmp(addr, "link:", 5) == 0)
2029 addr += 5;
2030 port = strchr(addr, ':');
2031 if (port) {
2032 *port = 0;
2033 if (port[1] && strcmp(port+1, "*")) {
2034 if (get_integer(&a.port, port+1, 0)) {
2035 if ((a.port = xll_name_to_index(port+1)) <= 0)
2036 return NULL;
2037 }
2038 }
2039 }
2040 if (addr[0] && strcmp(addr, "*")) {
2041 unsigned short tmp;
2042
2043 a.addr.bitlen = 32;
2044 if (ll_proto_a2n(&tmp, addr))
2045 return NULL;
2046 a.addr.data[0] = ntohs(tmp);
2047 }
2048 fam = AF_PACKET;
2049 goto out;
2050 }
2051
2052 if (fam == AF_NETLINK || strncmp(addr, "netlink:", 8) == 0) {
2053 a.addr.family = AF_NETLINK;
2054 a.addr.bitlen = 0;
2055 if (strncmp(addr, "netlink:", 8) == 0)
2056 addr += 8;
2057 port = strchr(addr, ':');
2058 if (port) {
2059 *port = 0;
2060 if (port[1] && strcmp(port+1, "*")) {
2061 if (get_integer(&a.port, port+1, 0)) {
2062 if (strcmp(port+1, "kernel") == 0)
2063 a.port = 0;
2064 else
2065 return NULL;
2066 }
2067 }
2068 }
2069 if (addr[0] && strcmp(addr, "*")) {
2070 a.addr.bitlen = 32;
2071 if (nl_proto_a2n(&a.addr.data[0], addr) == -1)
2072 return NULL;
2073 }
2074 fam = AF_NETLINK;
2075 goto out;
2076 }
2077
2078 if (fam == AF_VSOCK || strncmp(addr, "vsock:", 6) == 0) {
2079 __u32 cid = ~(__u32)0;
2080
2081 a.addr.family = AF_VSOCK;
2082 if (strncmp(addr, "vsock:", 6) == 0)
2083 addr += 6;
2084
2085 if (is_port)
2086 port = addr;
2087 else {
2088 port = strchr(addr, ':');
2089 if (port) {
2090 *port = '\0';
2091 port++;
2092 }
2093 }
2094
2095 if (port && strcmp(port, "*") &&
2096 get_u32((__u32 *)&a.port, port, 0))
2097 return NULL;
2098
2099 if (addr[0] && strcmp(addr, "*")) {
2100 a.addr.bitlen = 32;
2101 if (get_u32(&cid, addr, 0))
2102 return NULL;
2103 }
2104 vsock_set_inet_prefix(&a.addr, cid);
2105 fam = AF_VSOCK;
2106 goto out;
2107 }
2108
2109 if (fam == AF_INET || !strncmp(addr, "inet:", 5)) {
2110 fam = AF_INET;
2111 if (!strncmp(addr, "inet:", 5))
2112 addr += 5;
2113 } else if (fam == AF_INET6 || !strncmp(addr, "inet6:", 6)) {
2114 fam = AF_INET6;
2115 if (!strncmp(addr, "inet6:", 6))
2116 addr += 6;
2117 }
2118
2119 /* URL-like literal [] */
2120 if (addr[0] == '[') {
2121 addr++;
2122 if ((port = strchr(addr, ']')) == NULL)
2123 return NULL;
2124 *port++ = 0;
2125 } else if (addr[0] == '*') {
2126 port = addr+1;
2127 } else {
2128 port = strrchr(strchr(addr, '/') ? : addr, ':');
2129 }
2130
2131 if (is_port)
2132 port = addr;
2133
2134 if (port && *port) {
2135 if (*port == ':')
2136 *port++ = 0;
2137
2138 if (*port && *port != '*') {
2139 if (get_integer(&a.port, port, 0)) {
2140 struct servent *se1 = NULL;
2141 struct servent *se2 = NULL;
2142
2143 if (current_filter.dbs&(1<<UDP_DB))
2144 se1 = getservbyname(port, UDP_PROTO);
2145 if (current_filter.dbs&(1<<TCP_DB))
2146 se2 = getservbyname(port, TCP_PROTO);
2147 if (se1 && se2 && se1->s_port != se2->s_port) {
2148 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
2149 return NULL;
2150 }
2151 if (!se1)
2152 se1 = se2;
2153 if (se1) {
2154 a.port = ntohs(se1->s_port);
2155 } else {
2156 struct scache *s;
2157
2158 for (s = rlist; s; s = s->next) {
2159 if ((s->proto == UDP_PROTO &&
2160 (current_filter.dbs&(1<<UDP_DB))) ||
2161 (s->proto == TCP_PROTO &&
2162 (current_filter.dbs&(1<<TCP_DB)))) {
2163 if (s->name && strcmp(s->name, port) == 0) {
2164 if (a.port > 0 && a.port != s->port) {
2165 fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
2166 return NULL;
2167 }
2168 a.port = s->port;
2169 }
2170 }
2171 }
2172 if (a.port <= 0) {
2173 fprintf(stderr, "Error: \"%s\" does not look like a port.\n", port);
2174 return NULL;
2175 }
2176 }
2177 }
2178 }
2179 }
2180 if (!is_port && *addr && *addr != '*') {
2181 if (get_prefix_1(&a.addr, addr, fam)) {
2182 if (get_dns_host(&a, addr, fam)) {
2183 fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", addr);
2184 return NULL;
2185 }
2186 }
2187 }
2188
2189 out:
2190 if (fam != AF_UNSPEC) {
2191 int states = f->states;
2192 f->families = 0;
2193 filter_af_set(f, fam);
2194 filter_states_set(f, states);
2195 }
2196
2197 res = malloc(sizeof(*res));
2198 if (res)
2199 memcpy(res, &a, sizeof(a));
2200 return res;
2201 }
2202
2203 void *parse_markmask(const char *markmask)
2204 {
2205 struct aafilter a, *res;
2206
2207 if (strchr(markmask, '/')) {
2208 if (sscanf(markmask, "%i/%i", &a.mark, &a.mask) != 2)
2209 return NULL;
2210 } else {
2211 a.mask = 0xffffffff;
2212 if (sscanf(markmask, "%i", &a.mark) != 1)
2213 return NULL;
2214 }
2215
2216 res = malloc(sizeof(*res));
2217 if (res)
2218 memcpy(res, &a, sizeof(a));
2219 return res;
2220 }
2221
2222 static void proc_ctx_print(struct sockstat *s)
2223 {
2224 char *buf;
2225
2226 if (show_proc_ctx || show_sock_ctx) {
2227 if (find_entry(s->ino, &buf,
2228 (show_proc_ctx & show_sock_ctx) ?
2229 PROC_SOCK_CTX : PROC_CTX) > 0) {
2230 out(" users:(%s)", buf);
2231 free(buf);
2232 }
2233 } else if (show_users) {
2234 if (find_entry(s->ino, &buf, USERS) > 0) {
2235 out(" users:(%s)", buf);
2236 free(buf);
2237 }
2238 }
2239 }
2240
2241 static void inet_stats_print(struct sockstat *s, bool v6only)
2242 {
2243 sock_state_print(s);
2244
2245 inet_addr_print(&s->local, s->lport, s->iface, v6only);
2246 inet_addr_print(&s->remote, s->rport, 0, v6only);
2247
2248 proc_ctx_print(s);
2249 }
2250
2251 static int proc_parse_inet_addr(char *loc, char *rem, int family, struct
2252 sockstat * s)
2253 {
2254 s->local.family = s->remote.family = family;
2255 if (family == AF_INET) {
2256 sscanf(loc, "%x:%x", s->local.data, (unsigned *)&s->lport);
2257 sscanf(rem, "%x:%x", s->remote.data, (unsigned *)&s->rport);
2258 s->local.bytelen = s->remote.bytelen = 4;
2259 return 0;
2260 } else {
2261 sscanf(loc, "%08x%08x%08x%08x:%x",
2262 s->local.data,
2263 s->local.data + 1,
2264 s->local.data + 2,
2265 s->local.data + 3,
2266 &s->lport);
2267 sscanf(rem, "%08x%08x%08x%08x:%x",
2268 s->remote.data,
2269 s->remote.data + 1,
2270 s->remote.data + 2,
2271 s->remote.data + 3,
2272 &s->rport);
2273 s->local.bytelen = s->remote.bytelen = 16;
2274 return 0;
2275 }
2276 return -1;
2277 }
2278
2279 static int proc_inet_split_line(char *line, char **loc, char **rem, char **data)
2280 {
2281 char *p;
2282
2283 if ((p = strchr(line, ':')) == NULL)
2284 return -1;
2285
2286 *loc = p+2;
2287 if ((p = strchr(*loc, ':')) == NULL)
2288 return -1;
2289
2290 p[5] = 0;
2291 *rem = p+6;
2292 if ((p = strchr(*rem, ':')) == NULL)
2293 return -1;
2294
2295 p[5] = 0;
2296 *data = p+6;
2297 return 0;
2298 }
2299
2300 static char *sprint_bw(char *buf, double bw)
2301 {
2302 if (bw > 1000000.)
2303 sprintf(buf, "%.1fM", bw / 1000000.);
2304 else if (bw > 1000.)
2305 sprintf(buf, "%.1fK", bw / 1000.);
2306 else
2307 sprintf(buf, "%g", bw);
2308
2309 return buf;
2310 }
2311
2312 static void sctp_stats_print(struct sctp_info *s)
2313 {
2314 if (s->sctpi_tag)
2315 out(" tag:%x", s->sctpi_tag);
2316 if (s->sctpi_state)
2317 out(" state:%s", sctp_sstate_name[s->sctpi_state]);
2318 if (s->sctpi_rwnd)
2319 out(" rwnd:%d", s->sctpi_rwnd);
2320 if (s->sctpi_unackdata)
2321 out(" unackdata:%d", s->sctpi_unackdata);
2322 if (s->sctpi_penddata)
2323 out(" penddata:%d", s->sctpi_penddata);
2324 if (s->sctpi_instrms)
2325 out(" instrms:%d", s->sctpi_instrms);
2326 if (s->sctpi_outstrms)
2327 out(" outstrms:%d", s->sctpi_outstrms);
2328 if (s->sctpi_inqueue)
2329 out(" inqueue:%d", s->sctpi_inqueue);
2330 if (s->sctpi_outqueue)
2331 out(" outqueue:%d", s->sctpi_outqueue);
2332 if (s->sctpi_overall_error)
2333 out(" overerr:%d", s->sctpi_overall_error);
2334 if (s->sctpi_max_burst)
2335 out(" maxburst:%d", s->sctpi_max_burst);
2336 if (s->sctpi_maxseg)
2337 out(" maxseg:%d", s->sctpi_maxseg);
2338 if (s->sctpi_peer_rwnd)
2339 out(" prwnd:%d", s->sctpi_peer_rwnd);
2340 if (s->sctpi_peer_tag)
2341 out(" ptag:%x", s->sctpi_peer_tag);
2342 if (s->sctpi_peer_capable)
2343 out(" pcapable:%d", s->sctpi_peer_capable);
2344 if (s->sctpi_peer_sack)
2345 out(" psack:%d", s->sctpi_peer_sack);
2346 if (s->sctpi_s_autoclose)
2347 out(" autoclose:%d", s->sctpi_s_autoclose);
2348 if (s->sctpi_s_adaptation_ind)
2349 out(" adapind:%d", s->sctpi_s_adaptation_ind);
2350 if (s->sctpi_s_pd_point)
2351 out(" pdpoint:%d", s->sctpi_s_pd_point);
2352 if (s->sctpi_s_nodelay)
2353 out(" nodealy:%d", s->sctpi_s_nodelay);
2354 if (s->sctpi_s_disable_fragments)
2355 out(" nofrag:%d", s->sctpi_s_disable_fragments);
2356 if (s->sctpi_s_v4mapped)
2357 out(" v4mapped:%d", s->sctpi_s_v4mapped);
2358 if (s->sctpi_s_frag_interleave)
2359 out(" fraginl:%d", s->sctpi_s_frag_interleave);
2360 }
2361
2362 static void tcp_stats_print(struct tcpstat *s)
2363 {
2364 char b1[64];
2365
2366 if (s->has_ts_opt)
2367 out(" ts");
2368 if (s->has_sack_opt)
2369 out(" sack");
2370 if (s->has_ecn_opt)
2371 out(" ecn");
2372 if (s->has_ecnseen_opt)
2373 out(" ecnseen");
2374 if (s->has_fastopen_opt)
2375 out(" fastopen");
2376 if (s->cong_alg[0])
2377 out(" %s", s->cong_alg);
2378 if (s->has_wscale_opt)
2379 out(" wscale:%d,%d", s->snd_wscale, s->rcv_wscale);
2380 if (s->rto)
2381 out(" rto:%g", s->rto);
2382 if (s->backoff)
2383 out(" backoff:%u", s->backoff);
2384 if (s->rtt)
2385 out(" rtt:%g/%g", s->rtt, s->rttvar);
2386 if (s->ato)
2387 out(" ato:%g", s->ato);
2388
2389 if (s->qack)
2390 out(" qack:%d", s->qack);
2391 if (s->qack & 1)
2392 out(" bidir");
2393
2394 if (s->mss)
2395 out(" mss:%d", s->mss);
2396 if (s->pmtu)
2397 out(" pmtu:%u", s->pmtu);
2398 if (s->rcv_mss)
2399 out(" rcvmss:%d", s->rcv_mss);
2400 if (s->advmss)
2401 out(" advmss:%d", s->advmss);
2402 if (s->cwnd)
2403 out(" cwnd:%u", s->cwnd);
2404 if (s->ssthresh)
2405 out(" ssthresh:%d", s->ssthresh);
2406
2407 if (s->bytes_acked)
2408 out(" bytes_acked:%llu", s->bytes_acked);
2409 if (s->bytes_received)
2410 out(" bytes_received:%llu", s->bytes_received);
2411 if (s->segs_out)
2412 out(" segs_out:%u", s->segs_out);
2413 if (s->segs_in)
2414 out(" segs_in:%u", s->segs_in);
2415 if (s->data_segs_out)
2416 out(" data_segs_out:%u", s->data_segs_out);
2417 if (s->data_segs_in)
2418 out(" data_segs_in:%u", s->data_segs_in);
2419
2420 if (s->dctcp && s->dctcp->enabled) {
2421 struct dctcpstat *dctcp = s->dctcp;
2422
2423 out(" dctcp:(ce_state:%u,alpha:%u,ab_ecn:%u,ab_tot:%u)",
2424 dctcp->ce_state, dctcp->alpha, dctcp->ab_ecn,
2425 dctcp->ab_tot);
2426 } else if (s->dctcp) {
2427 out(" dctcp:fallback_mode");
2428 }
2429
2430 if (s->bbr_info) {
2431 __u64 bw;
2432
2433 bw = s->bbr_info->bbr_bw_hi;
2434 bw <<= 32;
2435 bw |= s->bbr_info->bbr_bw_lo;
2436
2437 out(" bbr:(bw:%sbps,mrtt:%g",
2438 sprint_bw(b1, bw * 8.0),
2439 (double)s->bbr_info->bbr_min_rtt / 1000.0);
2440 if (s->bbr_info->bbr_pacing_gain)
2441 out(",pacing_gain:%g",
2442 (double)s->bbr_info->bbr_pacing_gain / 256.0);
2443 if (s->bbr_info->bbr_cwnd_gain)
2444 out(",cwnd_gain:%g",
2445 (double)s->bbr_info->bbr_cwnd_gain / 256.0);
2446 out(")");
2447 }
2448
2449 if (s->send_bps)
2450 out(" send %sbps", sprint_bw(b1, s->send_bps));
2451 if (s->lastsnd)
2452 out(" lastsnd:%u", s->lastsnd);
2453 if (s->lastrcv)
2454 out(" lastrcv:%u", s->lastrcv);
2455 if (s->lastack)
2456 out(" lastack:%u", s->lastack);
2457
2458 if (s->pacing_rate) {
2459 out(" pacing_rate %sbps", sprint_bw(b1, s->pacing_rate));
2460 if (s->pacing_rate_max)
2461 out("/%sbps", sprint_bw(b1, s->pacing_rate_max));
2462 }
2463
2464 if (s->delivery_rate)
2465 out(" delivery_rate %sbps", sprint_bw(b1, s->delivery_rate));
2466 if (s->app_limited)
2467 out(" app_limited");
2468
2469 if (s->busy_time) {
2470 out(" busy:%llums", s->busy_time / 1000);
2471 if (s->rwnd_limited)
2472 out(" rwnd_limited:%llums(%.1f%%)",
2473 s->rwnd_limited / 1000,
2474 100.0 * s->rwnd_limited / s->busy_time);
2475 if (s->sndbuf_limited)
2476 out(" sndbuf_limited:%llums(%.1f%%)",
2477 s->sndbuf_limited / 1000,
2478 100.0 * s->sndbuf_limited / s->busy_time);
2479 }
2480
2481 if (s->unacked)
2482 out(" unacked:%u", s->unacked);
2483 if (s->retrans || s->retrans_total)
2484 out(" retrans:%u/%u", s->retrans, s->retrans_total);
2485 if (s->lost)
2486 out(" lost:%u", s->lost);
2487 if (s->sacked && s->ss.state != SS_LISTEN)
2488 out(" sacked:%u", s->sacked);
2489 if (s->fackets)
2490 out(" fackets:%u", s->fackets);
2491 if (s->reordering != 3)
2492 out(" reordering:%d", s->reordering);
2493 if (s->rcv_rtt)
2494 out(" rcv_rtt:%g", s->rcv_rtt);
2495 if (s->rcv_space)
2496 out(" rcv_space:%d", s->rcv_space);
2497 if (s->rcv_ssthresh)
2498 out(" rcv_ssthresh:%u", s->rcv_ssthresh);
2499 if (s->not_sent)
2500 out(" notsent:%u", s->not_sent);
2501 if (s->min_rtt)
2502 out(" minrtt:%g", s->min_rtt);
2503 }
2504
2505 static void tcp_timer_print(struct tcpstat *s)
2506 {
2507 static const char * const tmr_name[] = {
2508 "off",
2509 "on",
2510 "keepalive",
2511 "timewait",
2512 "persist",
2513 "unknown"
2514 };
2515
2516 if (s->timer) {
2517 if (s->timer > 4)
2518 s->timer = 5;
2519 out(" timer:(%s,%s,%d)",
2520 tmr_name[s->timer],
2521 print_ms_timer(s->timeout),
2522 s->retrans);
2523 }
2524 }
2525
2526 static void sctp_timer_print(struct tcpstat *s)
2527 {
2528 if (s->timer)
2529 out(" timer:(T3_RTX,%s,%d)",
2530 print_ms_timer(s->timeout), s->retrans);
2531 }
2532
2533 static int tcp_show_line(char *line, const struct filter *f, int family)
2534 {
2535 int rto = 0, ato = 0;
2536 struct tcpstat s = {};
2537 char *loc, *rem, *data;
2538 char opt[256];
2539 int n;
2540 int hz = get_user_hz();
2541
2542 if (proc_inet_split_line(line, &loc, &rem, &data))
2543 return -1;
2544
2545 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
2546
2547 if (!(f->states & (1 << state)))
2548 return 0;
2549
2550 proc_parse_inet_addr(loc, rem, family, &s.ss);
2551
2552 if (f->f && run_ssfilter(f->f, &s.ss) == 0)
2553 return 0;
2554
2555 opt[0] = 0;
2556 n = sscanf(data, "%x %x:%x %x:%x %x %d %d %u %d %llx %d %d %d %u %d %[^\n]\n",
2557 &s.ss.state, &s.ss.wq, &s.ss.rq,
2558 &s.timer, &s.timeout, &s.retrans, &s.ss.uid, &s.probes,
2559 &s.ss.ino, &s.ss.refcnt, &s.ss.sk, &rto, &ato, &s.qack, &s.cwnd,
2560 &s.ssthresh, opt);
2561
2562 if (n < 17)
2563 opt[0] = 0;
2564
2565 if (n < 12) {
2566 rto = 0;
2567 s.cwnd = 2;
2568 s.ssthresh = -1;
2569 ato = s.qack = 0;
2570 }
2571
2572 s.retrans = s.timer != 1 ? s.probes : s.retrans;
2573 s.timeout = (s.timeout * 1000 + hz - 1) / hz;
2574 s.ato = (double)ato / hz;
2575 s.qack /= 2;
2576 s.rto = (double)rto;
2577 s.ssthresh = s.ssthresh == -1 ? 0 : s.ssthresh;
2578 s.rto = s.rto != 3 * hz ? s.rto / hz : 0;
2579 s.ss.type = IPPROTO_TCP;
2580
2581 inet_stats_print(&s.ss, false);
2582
2583 if (show_options)
2584 tcp_timer_print(&s);
2585
2586 if (show_details) {
2587 sock_details_print(&s.ss);
2588 if (opt[0])
2589 out(" opt:\"%s\"", opt);
2590 }
2591
2592 if (show_tcpinfo)
2593 tcp_stats_print(&s);
2594
2595 return 0;
2596 }
2597
2598 static int generic_record_read(FILE *fp,
2599 int (*worker)(char*, const struct filter *, int),
2600 const struct filter *f, int fam)
2601 {
2602 char line[256];
2603
2604 /* skip header */
2605 if (fgets(line, sizeof(line), fp) == NULL)
2606 goto outerr;
2607
2608 while (fgets(line, sizeof(line), fp) != NULL) {
2609 int n = strlen(line);
2610
2611 if (n == 0 || line[n-1] != '\n') {
2612 errno = -EINVAL;
2613 return -1;
2614 }
2615 line[n-1] = 0;
2616
2617 if (worker(line, f, fam) < 0)
2618 return 0;
2619 }
2620 outerr:
2621
2622 return ferror(fp) ? -1 : 0;
2623 }
2624
2625 static void print_skmeminfo(struct rtattr *tb[], int attrtype)
2626 {
2627 const __u32 *skmeminfo;
2628
2629 if (!tb[attrtype]) {
2630 if (attrtype == INET_DIAG_SKMEMINFO) {
2631 if (!tb[INET_DIAG_MEMINFO])
2632 return;
2633
2634 const struct inet_diag_meminfo *minfo =
2635 RTA_DATA(tb[INET_DIAG_MEMINFO]);
2636
2637 out(" mem:(r%u,w%u,f%u,t%u)",
2638 minfo->idiag_rmem,
2639 minfo->idiag_wmem,
2640 minfo->idiag_fmem,
2641 minfo->idiag_tmem);
2642 }
2643 return;
2644 }
2645
2646 skmeminfo = RTA_DATA(tb[attrtype]);
2647
2648 out(" skmem:(r%u,rb%u,t%u,tb%u,f%u,w%u,o%u",
2649 skmeminfo[SK_MEMINFO_RMEM_ALLOC],
2650 skmeminfo[SK_MEMINFO_RCVBUF],
2651 skmeminfo[SK_MEMINFO_WMEM_ALLOC],
2652 skmeminfo[SK_MEMINFO_SNDBUF],
2653 skmeminfo[SK_MEMINFO_FWD_ALLOC],
2654 skmeminfo[SK_MEMINFO_WMEM_QUEUED],
2655 skmeminfo[SK_MEMINFO_OPTMEM]);
2656
2657 if (RTA_PAYLOAD(tb[attrtype]) >=
2658 (SK_MEMINFO_BACKLOG + 1) * sizeof(__u32))
2659 out(",bl%u", skmeminfo[SK_MEMINFO_BACKLOG]);
2660
2661 if (RTA_PAYLOAD(tb[attrtype]) >=
2662 (SK_MEMINFO_DROPS + 1) * sizeof(__u32))
2663 out(",d%u", skmeminfo[SK_MEMINFO_DROPS]);
2664
2665 out(")");
2666 }
2667
2668 static void print_md5sig(struct tcp_diag_md5sig *sig)
2669 {
2670 out("%s/%d=",
2671 format_host(sig->tcpm_family,
2672 sig->tcpm_family == AF_INET6 ? 16 : 4,
2673 &sig->tcpm_addr),
2674 sig->tcpm_prefixlen);
2675 print_escape_buf(sig->tcpm_key, sig->tcpm_keylen, " ,");
2676 }
2677
2678 #define TCPI_HAS_OPT(info, opt) !!(info->tcpi_options & (opt))
2679
2680 static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
2681 struct rtattr *tb[])
2682 {
2683 double rtt = 0;
2684 struct tcpstat s = {};
2685
2686 s.ss.state = r->idiag_state;
2687
2688 print_skmeminfo(tb, INET_DIAG_SKMEMINFO);
2689
2690 if (tb[INET_DIAG_INFO]) {
2691 struct tcp_info *info;
2692 int len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
2693
2694 /* workaround for older kernels with less fields */
2695 if (len < sizeof(*info)) {
2696 info = alloca(sizeof(*info));
2697 memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
2698 memset((char *)info + len, 0, sizeof(*info) - len);
2699 } else
2700 info = RTA_DATA(tb[INET_DIAG_INFO]);
2701
2702 if (show_options) {
2703 s.has_ts_opt = TCPI_HAS_OPT(info, TCPI_OPT_TIMESTAMPS);
2704 s.has_sack_opt = TCPI_HAS_OPT(info, TCPI_OPT_SACK);
2705 s.has_ecn_opt = TCPI_HAS_OPT(info, TCPI_OPT_ECN);
2706 s.has_ecnseen_opt = TCPI_HAS_OPT(info, TCPI_OPT_ECN_SEEN);
2707 s.has_fastopen_opt = TCPI_HAS_OPT(info, TCPI_OPT_SYN_DATA);
2708 }
2709
2710 if (tb[INET_DIAG_CONG])
2711 strncpy(s.cong_alg,
2712 rta_getattr_str(tb[INET_DIAG_CONG]),
2713 sizeof(s.cong_alg) - 1);
2714
2715 if (TCPI_HAS_OPT(info, TCPI_OPT_WSCALE)) {
2716 s.has_wscale_opt = true;
2717 s.snd_wscale = info->tcpi_snd_wscale;
2718 s.rcv_wscale = info->tcpi_rcv_wscale;
2719 }
2720
2721 if (info->tcpi_rto && info->tcpi_rto != 3000000)
2722 s.rto = (double)info->tcpi_rto / 1000;
2723
2724 s.backoff = info->tcpi_backoff;
2725 s.rtt = (double)info->tcpi_rtt / 1000;
2726 s.rttvar = (double)info->tcpi_rttvar / 1000;
2727 s.ato = (double)info->tcpi_ato / 1000;
2728 s.mss = info->tcpi_snd_mss;
2729 s.rcv_mss = info->tcpi_rcv_mss;
2730 s.advmss = info->tcpi_advmss;
2731 s.rcv_space = info->tcpi_rcv_space;
2732 s.rcv_rtt = (double)info->tcpi_rcv_rtt / 1000;
2733 s.lastsnd = info->tcpi_last_data_sent;
2734 s.lastrcv = info->tcpi_last_data_recv;
2735 s.lastack = info->tcpi_last_ack_recv;
2736 s.unacked = info->tcpi_unacked;
2737 s.retrans = info->tcpi_retrans;
2738 s.retrans_total = info->tcpi_total_retrans;
2739 s.lost = info->tcpi_lost;
2740 s.sacked = info->tcpi_sacked;
2741 s.fackets = info->tcpi_fackets;
2742 s.reordering = info->tcpi_reordering;
2743 s.rcv_ssthresh = info->tcpi_rcv_ssthresh;
2744 s.cwnd = info->tcpi_snd_cwnd;
2745 s.pmtu = info->tcpi_pmtu;
2746
2747 if (info->tcpi_snd_ssthresh < 0xFFFF)
2748 s.ssthresh = info->tcpi_snd_ssthresh;
2749
2750 rtt = (double) info->tcpi_rtt;
2751 if (tb[INET_DIAG_VEGASINFO]) {
2752 const struct tcpvegas_info *vinfo
2753 = RTA_DATA(tb[INET_DIAG_VEGASINFO]);
2754
2755 if (vinfo->tcpv_enabled &&
2756 vinfo->tcpv_rtt && vinfo->tcpv_rtt != 0x7fffffff)
2757 rtt = vinfo->tcpv_rtt;
2758 }
2759
2760 if (tb[INET_DIAG_DCTCPINFO]) {
2761 struct dctcpstat *dctcp = malloc(sizeof(struct
2762 dctcpstat));
2763
2764 const struct tcp_dctcp_info *dinfo
2765 = RTA_DATA(tb[INET_DIAG_DCTCPINFO]);
2766
2767 dctcp->enabled = !!dinfo->dctcp_enabled;
2768 dctcp->ce_state = dinfo->dctcp_ce_state;
2769 dctcp->alpha = dinfo->dctcp_alpha;
2770 dctcp->ab_ecn = dinfo->dctcp_ab_ecn;
2771 dctcp->ab_tot = dinfo->dctcp_ab_tot;
2772 s.dctcp = dctcp;
2773 }
2774
2775 if (tb[INET_DIAG_BBRINFO]) {
2776 const void *bbr_info = RTA_DATA(tb[INET_DIAG_BBRINFO]);
2777 int len = min(RTA_PAYLOAD(tb[INET_DIAG_BBRINFO]),
2778 sizeof(*s.bbr_info));
2779
2780 s.bbr_info = calloc(1, sizeof(*s.bbr_info));
2781 if (s.bbr_info && bbr_info)
2782 memcpy(s.bbr_info, bbr_info, len);
2783 }
2784
2785 if (rtt > 0 && info->tcpi_snd_mss && info->tcpi_snd_cwnd) {
2786 s.send_bps = (double) info->tcpi_snd_cwnd *
2787 (double)info->tcpi_snd_mss * 8000000. / rtt;
2788 }
2789
2790 if (info->tcpi_pacing_rate &&
2791 info->tcpi_pacing_rate != ~0ULL) {
2792 s.pacing_rate = info->tcpi_pacing_rate * 8.;
2793
2794 if (info->tcpi_max_pacing_rate &&
2795 info->tcpi_max_pacing_rate != ~0ULL)
2796 s.pacing_rate_max = info->tcpi_max_pacing_rate * 8.;
2797 }
2798 s.bytes_acked = info->tcpi_bytes_acked;
2799 s.bytes_received = info->tcpi_bytes_received;
2800 s.segs_out = info->tcpi_segs_out;
2801 s.segs_in = info->tcpi_segs_in;
2802 s.data_segs_out = info->tcpi_data_segs_out;
2803 s.data_segs_in = info->tcpi_data_segs_in;
2804 s.not_sent = info->tcpi_notsent_bytes;
2805 if (info->tcpi_min_rtt && info->tcpi_min_rtt != ~0U)
2806 s.min_rtt = (double) info->tcpi_min_rtt / 1000;
2807 s.delivery_rate = info->tcpi_delivery_rate * 8.;
2808 s.app_limited = info->tcpi_delivery_rate_app_limited;
2809 s.busy_time = info->tcpi_busy_time;
2810 s.rwnd_limited = info->tcpi_rwnd_limited;
2811 s.sndbuf_limited = info->tcpi_sndbuf_limited;
2812 tcp_stats_print(&s);
2813 free(s.dctcp);
2814 free(s.bbr_info);
2815 }
2816 if (tb[INET_DIAG_MD5SIG]) {
2817 struct tcp_diag_md5sig *sig = RTA_DATA(tb[INET_DIAG_MD5SIG]);
2818 int len = RTA_PAYLOAD(tb[INET_DIAG_MD5SIG]);
2819
2820 out(" md5keys:");
2821 print_md5sig(sig++);
2822 for (len -= sizeof(*sig); len > 0; len -= sizeof(*sig)) {
2823 out(",");
2824 print_md5sig(sig++);
2825 }
2826 }
2827 }
2828
2829 static const char *format_host_sa(struct sockaddr_storage *sa)
2830 {
2831 union {
2832 struct sockaddr_in sin;
2833 struct sockaddr_in6 sin6;
2834 } *saddr = (void *)sa;
2835
2836 switch (sa->ss_family) {
2837 case AF_INET:
2838 return format_host(AF_INET, 4, &saddr->sin.sin_addr);
2839 case AF_INET6:
2840 return format_host(AF_INET6, 16, &saddr->sin6.sin6_addr);
2841 default:
2842 return "";
2843 }
2844 }
2845
2846 static void sctp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
2847 struct rtattr *tb[])
2848 {
2849 struct sockaddr_storage *sa;
2850 int len;
2851
2852 print_skmeminfo(tb, INET_DIAG_SKMEMINFO);
2853
2854 if (tb[INET_DIAG_LOCALS]) {
2855 len = RTA_PAYLOAD(tb[INET_DIAG_LOCALS]);
2856 sa = RTA_DATA(tb[INET_DIAG_LOCALS]);
2857
2858 out("locals:%s", format_host_sa(sa));
2859 for (sa++, len -= sizeof(*sa); len > 0; sa++, len -= sizeof(*sa))
2860 out(",%s", format_host_sa(sa));
2861
2862 }
2863 if (tb[INET_DIAG_PEERS]) {
2864 len = RTA_PAYLOAD(tb[INET_DIAG_PEERS]);
2865 sa = RTA_DATA(tb[INET_DIAG_PEERS]);
2866
2867 out(" peers:%s", format_host_sa(sa));
2868 for (sa++, len -= sizeof(*sa); len > 0; sa++, len -= sizeof(*sa))
2869 out(",%s", format_host_sa(sa));
2870 }
2871 if (tb[INET_DIAG_INFO]) {
2872 struct sctp_info *info;
2873 len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
2874
2875 /* workaround for older kernels with less fields */
2876 if (len < sizeof(*info)) {
2877 info = alloca(sizeof(*info));
2878 memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
2879 memset((char *)info + len, 0, sizeof(*info) - len);
2880 } else
2881 info = RTA_DATA(tb[INET_DIAG_INFO]);
2882
2883 sctp_stats_print(info);
2884 }
2885 }
2886
2887 static void parse_diag_msg(struct nlmsghdr *nlh, struct sockstat *s)
2888 {
2889 struct rtattr *tb[INET_DIAG_MAX+1];
2890 struct inet_diag_msg *r = NLMSG_DATA(nlh);
2891
2892 parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr *)(r+1),
2893 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
2894
2895 s->state = r->idiag_state;
2896 s->local.family = s->remote.family = r->idiag_family;
2897 s->lport = ntohs(r->id.idiag_sport);
2898 s->rport = ntohs(r->id.idiag_dport);
2899 s->wq = r->idiag_wqueue;
2900 s->rq = r->idiag_rqueue;
2901 s->ino = r->idiag_inode;
2902 s->uid = r->idiag_uid;
2903 s->iface = r->id.idiag_if;
2904 s->sk = cookie_sk_get(&r->id.idiag_cookie[0]);
2905
2906 s->mark = 0;
2907 if (tb[INET_DIAG_MARK])
2908 s->mark = rta_getattr_u32(tb[INET_DIAG_MARK]);
2909 if (tb[INET_DIAG_PROTOCOL])
2910 s->raw_prot = rta_getattr_u8(tb[INET_DIAG_PROTOCOL]);
2911 else
2912 s->raw_prot = 0;
2913
2914 if (s->local.family == AF_INET)
2915 s->local.bytelen = s->remote.bytelen = 4;
2916 else
2917 s->local.bytelen = s->remote.bytelen = 16;
2918
2919 memcpy(s->local.data, r->id.idiag_src, s->local.bytelen);
2920 memcpy(s->remote.data, r->id.idiag_dst, s->local.bytelen);
2921 }
2922
2923 static int inet_show_sock(struct nlmsghdr *nlh,
2924 struct sockstat *s)
2925 {
2926 struct rtattr *tb[INET_DIAG_MAX+1];
2927 struct inet_diag_msg *r = NLMSG_DATA(nlh);
2928 unsigned char v6only = 0;
2929
2930 parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr *)(r+1),
2931 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
2932
2933 if (tb[INET_DIAG_PROTOCOL])
2934 s->type = rta_getattr_u8(tb[INET_DIAG_PROTOCOL]);
2935
2936 if (s->local.family == AF_INET6 && tb[INET_DIAG_SKV6ONLY])
2937 v6only = rta_getattr_u8(tb[INET_DIAG_SKV6ONLY]);
2938
2939 inet_stats_print(s, v6only);
2940
2941 if (show_options) {
2942 struct tcpstat t = {};
2943
2944 t.timer = r->idiag_timer;
2945 t.timeout = r->idiag_expires;
2946 t.retrans = r->idiag_retrans;
2947 if (s->type == IPPROTO_SCTP)
2948 sctp_timer_print(&t);
2949 else
2950 tcp_timer_print(&t);
2951 }
2952
2953 if (show_details) {
2954 sock_details_print(s);
2955 if (s->local.family == AF_INET6 && tb[INET_DIAG_SKV6ONLY])
2956 out(" v6only:%u", v6only);
2957
2958 if (tb[INET_DIAG_SHUTDOWN]) {
2959 unsigned char mask;
2960
2961 mask = rta_getattr_u8(tb[INET_DIAG_SHUTDOWN]);
2962 out(" %c-%c",
2963 mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
2964 }
2965 }
2966
2967 if (show_mem || (show_tcpinfo && s->type != IPPROTO_UDP)) {
2968 out("\n\t");
2969 if (s->type == IPPROTO_SCTP)
2970 sctp_show_info(nlh, r, tb);
2971 else
2972 tcp_show_info(nlh, r, tb);
2973 }
2974 sctp_ino = s->ino;
2975
2976 return 0;
2977 }
2978
2979 static int tcpdiag_send(int fd, int protocol, struct filter *f)
2980 {
2981 struct sockaddr_nl nladdr = { .nl_family = AF_NETLINK };
2982 struct {
2983 struct nlmsghdr nlh;
2984 struct inet_diag_req r;
2985 } req = {
2986 .nlh.nlmsg_len = sizeof(req),
2987 .nlh.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST,
2988 .nlh.nlmsg_seq = MAGIC_SEQ,
2989 .r.idiag_family = AF_INET,
2990 .r.idiag_states = f->states,
2991 };
2992 char *bc = NULL;
2993 int bclen;
2994 struct msghdr msg;
2995 struct rtattr rta;
2996 struct iovec iov[3];
2997 int iovlen = 1;
2998
2999 if (protocol == IPPROTO_UDP)
3000 return -1;
3001
3002 if (protocol == IPPROTO_TCP)
3003 req.nlh.nlmsg_type = TCPDIAG_GETSOCK;
3004 else
3005 req.nlh.nlmsg_type = DCCPDIAG_GETSOCK;
3006 if (show_mem) {
3007 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
3008 req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
3009 }
3010
3011 if (show_tcpinfo) {
3012 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
3013 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
3014 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
3015 }
3016
3017 iov[0] = (struct iovec){
3018 .iov_base = &req,
3019 .iov_len = sizeof(req)
3020 };
3021 if (f->f) {
3022 bclen = ssfilter_bytecompile(f->f, &bc);
3023 if (bclen) {
3024 rta.rta_type = INET_DIAG_REQ_BYTECODE;
3025 rta.rta_len = RTA_LENGTH(bclen);
3026 iov[1] = (struct iovec){ &rta, sizeof(rta) };
3027 iov[2] = (struct iovec){ bc, bclen };
3028 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
3029 iovlen = 3;
3030 }
3031 }
3032
3033 msg = (struct msghdr) {
3034 .msg_name = (void *)&nladdr,
3035 .msg_namelen = sizeof(nladdr),
3036 .msg_iov = iov,
3037 .msg_iovlen = iovlen,
3038 };
3039
3040 if (sendmsg(fd, &msg, 0) < 0) {
3041 close(fd);
3042 return -1;
3043 }
3044
3045 return 0;
3046 }
3047
3048 static int sockdiag_send(int family, int fd, int protocol, struct filter *f)
3049 {
3050 struct sockaddr_nl nladdr = { .nl_family = AF_NETLINK };
3051 DIAG_REQUEST(req, struct inet_diag_req_v2 r);
3052 char *bc = NULL;
3053 int bclen;
3054 struct msghdr msg;
3055 struct rtattr rta;
3056 struct iovec iov[3];
3057 int iovlen = 1;
3058
3059 if (family == PF_UNSPEC)
3060 return tcpdiag_send(fd, protocol, f);
3061
3062 memset(&req.r, 0, sizeof(req.r));
3063 req.r.sdiag_family = family;
3064 req.r.sdiag_protocol = protocol;
3065 req.r.idiag_states = f->states;
3066 if (show_mem) {
3067 req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
3068 req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
3069 }
3070
3071 if (show_tcpinfo) {
3072 req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
3073 req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
3074 req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
3075 }
3076
3077 iov[0] = (struct iovec){
3078 .iov_base = &req,
3079 .iov_len = sizeof(req)
3080 };
3081 if (f->f) {
3082 bclen = ssfilter_bytecompile(f->f, &bc);
3083 if (bclen) {
3084 rta.rta_type = INET_DIAG_REQ_BYTECODE;
3085 rta.rta_len = RTA_LENGTH(bclen);
3086 iov[1] = (struct iovec){ &rta, sizeof(rta) };
3087 iov[2] = (struct iovec){ bc, bclen };
3088 req.nlh.nlmsg_len += RTA_LENGTH(bclen);
3089 iovlen = 3;
3090 }
3091 }
3092
3093 msg = (struct msghdr) {
3094 .msg_name = (void *)&nladdr,
3095 .msg_namelen = sizeof(nladdr),
3096 .msg_iov = iov,
3097 .msg_iovlen = iovlen,
3098 };
3099
3100 if (sendmsg(fd, &msg, 0) < 0) {
3101 close(fd);
3102 return -1;
3103 }
3104
3105 return 0;
3106 }
3107
3108 struct inet_diag_arg {
3109 struct filter *f;
3110 int protocol;
3111 struct rtnl_handle *rth;
3112 };
3113
3114 static int kill_inet_sock(struct nlmsghdr *h, void *arg, struct sockstat *s)
3115 {
3116 struct inet_diag_msg *d = NLMSG_DATA(h);
3117 struct inet_diag_arg *diag_arg = arg;
3118 struct rtnl_handle *rth = diag_arg->rth;
3119
3120 DIAG_REQUEST(req, struct inet_diag_req_v2 r);
3121
3122 req.nlh.nlmsg_type = SOCK_DESTROY;
3123 req.nlh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
3124 req.nlh.nlmsg_seq = ++rth->seq;
3125 req.r.sdiag_family = d->idiag_family;
3126 req.r.sdiag_protocol = diag_arg->protocol;
3127 req.r.id = d->id;
3128
3129 if (diag_arg->protocol == IPPROTO_RAW) {
3130 struct inet_diag_req_raw *raw = (void *)&req.r;
3131
3132 BUILD_BUG_ON(sizeof(req.r) != sizeof(*raw));
3133 raw->sdiag_raw_protocol = s->raw_prot;
3134 }
3135
3136 return rtnl_talk(rth, &req.nlh, NULL);
3137 }
3138
3139 static int show_one_inet_sock(const struct sockaddr_nl *addr,
3140 struct nlmsghdr *h, void *arg)
3141 {
3142 int err;
3143 struct inet_diag_arg *diag_arg = arg;
3144 struct inet_diag_msg *r = NLMSG_DATA(h);
3145 struct sockstat s = {};
3146
3147 if (!(diag_arg->f->families & FAMILY_MASK(r->idiag_family)))
3148 return 0;
3149
3150 parse_diag_msg(h, &s);
3151 s.type = diag_arg->protocol;
3152
3153 if (diag_arg->f->f && run_ssfilter(diag_arg->f->f, &s) == 0)
3154 return 0;
3155
3156 if (diag_arg->f->kill && kill_inet_sock(h, arg, &s) != 0) {
3157 if (errno == EOPNOTSUPP || errno == ENOENT) {
3158 /* Socket can't be closed, or is already closed. */
3159 return 0;
3160 } else {
3161 perror("SOCK_DESTROY answers");
3162 return -1;
3163 }
3164 }
3165
3166 err = inet_show_sock(h, &s);
3167 if (err < 0)
3168 return err;
3169
3170 return 0;
3171 }
3172
3173 static int inet_show_netlink(struct filter *f, FILE *dump_fp, int protocol)
3174 {
3175 int err = 0;
3176 struct rtnl_handle rth, rth2;
3177 int family = PF_INET;
3178 struct inet_diag_arg arg = { .f = f, .protocol = protocol };
3179
3180 if (rtnl_open_byproto(&rth, 0, NETLINK_SOCK_DIAG))
3181 return -1;
3182
3183 if (f->kill) {
3184 if (rtnl_open_byproto(&rth2, 0, NETLINK_SOCK_DIAG)) {
3185 rtnl_close(&rth);
3186 return -1;
3187 }
3188 arg.rth = &rth2;
3189 }
3190
3191 rth.dump = MAGIC_SEQ;
3192 rth.dump_fp = dump_fp;
3193 if (preferred_family == PF_INET6)
3194 family = PF_INET6;
3195
3196 again:
3197 if ((err = sockdiag_send(family, rth.fd, protocol, f)))
3198 goto Exit;
3199
3200 if ((err = rtnl_dump_filter(&rth, show_one_inet_sock, &arg))) {
3201 if (family != PF_UNSPEC) {
3202 family = PF_UNSPEC;
3203 goto again;
3204 }
3205 goto Exit;
3206 }
3207 if (family == PF_INET && preferred_family != PF_INET) {
3208 family = PF_INET6;
3209 goto again;
3210 }
3211
3212 Exit:
3213 rtnl_close(&rth);
3214 if (arg.rth)
3215 rtnl_close(arg.rth);
3216 return err;
3217 }
3218
3219 static int tcp_show_netlink_file(struct filter *f)
3220 {
3221 FILE *fp;
3222 char buf[16384];
3223 int err = -1;
3224
3225 if ((fp = fopen(getenv("TCPDIAG_FILE"), "r")) == NULL) {
3226 perror("fopen($TCPDIAG_FILE)");
3227 return err;
3228 }
3229
3230 while (1) {
3231 int status, err2;
3232 struct nlmsghdr *h = (struct nlmsghdr *)buf;
3233 struct sockstat s = {};
3234
3235 status = fread(buf, 1, sizeof(*h), fp);
3236 if (status < 0) {
3237 perror("Reading header from $TCPDIAG_FILE");
3238 break;
3239 }
3240 if (status != sizeof(*h)) {
3241 perror("Unexpected EOF reading $TCPDIAG_FILE");
3242 break;
3243 }
3244
3245 status = fread(h+1, 1, NLMSG_ALIGN(h->nlmsg_len-sizeof(*h)), fp);
3246
3247 if (status < 0) {
3248 perror("Reading $TCPDIAG_FILE");
3249 break;
3250 }
3251 if (status + sizeof(*h) < h->nlmsg_len) {
3252 perror("Unexpected EOF reading $TCPDIAG_FILE");
3253 break;
3254 }
3255
3256 /* The only legal exit point */
3257 if (h->nlmsg_type == NLMSG_DONE) {
3258 err = 0;
3259 break;
3260 }
3261
3262 if (h->nlmsg_type == NLMSG_ERROR) {
3263 struct nlmsgerr *err = (struct nlmsgerr *)NLMSG_DATA(h);
3264
3265 if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
3266 fprintf(stderr, "ERROR truncated\n");
3267 } else {
3268 errno = -err->error;
3269 perror("TCPDIAG answered");
3270 }
3271 break;
3272 }
3273
3274 parse_diag_msg(h, &s);
3275 s.type = IPPROTO_TCP;
3276
3277 if (f && f->f && run_ssfilter(f->f, &s) == 0)
3278 continue;
3279
3280 err2 = inet_show_sock(h, &s);
3281 if (err2 < 0) {
3282 err = err2;
3283 break;
3284 }
3285 }
3286
3287 fclose(fp);
3288 return err;
3289 }
3290
3291 static int tcp_show(struct filter *f)
3292 {
3293 FILE *fp = NULL;
3294 char *buf = NULL;
3295 int bufsize = 64*1024;
3296
3297 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
3298 return 0;
3299
3300 dg_proto = TCP_PROTO;
3301
3302 if (getenv("TCPDIAG_FILE"))
3303 return tcp_show_netlink_file(f);
3304
3305 if (!getenv("PROC_NET_TCP") && !getenv("PROC_ROOT")
3306 && inet_show_netlink(f, NULL, IPPROTO_TCP) == 0)
3307 return 0;
3308
3309 /* Sigh... We have to parse /proc/net/tcp... */
3310
3311
3312 /* Estimate amount of sockets and try to allocate
3313 * huge buffer to read all the table at one read.
3314 * Limit it by 16MB though. The assumption is: as soon as
3315 * kernel was able to hold information about N connections,
3316 * it is able to give us some memory for snapshot.
3317 */
3318 if (1) {
3319 get_slabstat(&slabstat);
3320
3321 int guess = slabstat.socks+slabstat.tcp_syns;
3322
3323 if (f->states&(1<<SS_TIME_WAIT))
3324 guess += slabstat.tcp_tws;
3325 if (guess > (16*1024*1024)/128)
3326 guess = (16*1024*1024)/128;
3327 guess *= 128;
3328 if (guess > bufsize)
3329 bufsize = guess;
3330 }
3331 while (bufsize >= 64*1024) {
3332 if ((buf = malloc(bufsize)) != NULL)
3333 break;
3334 bufsize /= 2;
3335 }
3336 if (buf == NULL) {
3337 errno = ENOMEM;
3338 return -1;
3339 }
3340
3341 if (f->families & FAMILY_MASK(AF_INET)) {
3342 if ((fp = net_tcp_open()) == NULL)
3343 goto outerr;
3344
3345 setbuffer(fp, buf, bufsize);
3346 if (generic_record_read(fp, tcp_show_line, f, AF_INET))
3347 goto outerr;
3348 fclose(fp);
3349 }
3350
3351 if ((f->families & FAMILY_MASK(AF_INET6)) &&
3352 (fp = net_tcp6_open()) != NULL) {
3353 setbuffer(fp, buf, bufsize);
3354 if (generic_record_read(fp, tcp_show_line, f, AF_INET6))
3355 goto outerr;
3356 fclose(fp);
3357 }
3358
3359 free(buf);
3360 return 0;
3361
3362 outerr:
3363 do {
3364 int saved_errno = errno;
3365
3366 free(buf);
3367 if (fp)
3368 fclose(fp);
3369 errno = saved_errno;
3370 return -1;
3371 } while (0);
3372 }
3373
3374 static int dccp_show(struct filter *f)
3375 {
3376 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
3377 return 0;
3378
3379 if (!getenv("PROC_NET_DCCP") && !getenv("PROC_ROOT")
3380 && inet_show_netlink(f, NULL, IPPROTO_DCCP) == 0)
3381 return 0;
3382
3383 return 0;
3384 }
3385
3386 static int sctp_show(struct filter *f)
3387 {
3388 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
3389 return 0;
3390
3391 if (!getenv("PROC_NET_SCTP") && !getenv("PROC_ROOT")
3392 && inet_show_netlink(f, NULL, IPPROTO_SCTP) == 0)
3393 return 0;
3394
3395 return 0;
3396 }
3397
3398 static int dgram_show_line(char *line, const struct filter *f, int family)
3399 {
3400 struct sockstat s = {};
3401 char *loc, *rem, *data;
3402 char opt[256];
3403 int n;
3404
3405 if (proc_inet_split_line(line, &loc, &rem, &data))
3406 return -1;
3407
3408 int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
3409
3410 if (!(f->states & (1 << state)))
3411 return 0;
3412
3413 proc_parse_inet_addr(loc, rem, family, &s);
3414
3415 if (f->f && run_ssfilter(f->f, &s) == 0)
3416 return 0;
3417
3418 opt[0] = 0;
3419 n = sscanf(data, "%x %x:%x %*x:%*x %*x %d %*d %u %d %llx %[^\n]\n",
3420 &s.state, &s.wq, &s.rq,
3421 &s.uid, &s.ino,
3422 &s.refcnt, &s.sk, opt);
3423
3424 if (n < 9)
3425 opt[0] = 0;
3426
3427 s.type = dg_proto == UDP_PROTO ? IPPROTO_UDP : 0;
3428 inet_stats_print(&s, false);
3429
3430 if (show_details && opt[0])
3431 out(" opt:\"%s\"", opt);
3432
3433 return 0;
3434 }
3435
3436 static int udp_show(struct filter *f)
3437 {
3438 FILE *fp = NULL;
3439
3440 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
3441 return 0;
3442
3443 dg_proto = UDP_PROTO;
3444
3445 if (!getenv("PROC_NET_UDP") && !getenv("PROC_ROOT")
3446 && inet_show_netlink(f, NULL, IPPROTO_UDP) == 0)
3447 return 0;
3448
3449 if (f->families&FAMILY_MASK(AF_INET)) {
3450 if ((fp = net_udp_open()) == NULL)
3451 goto outerr;
3452 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
3453 goto outerr;
3454 fclose(fp);
3455 }
3456
3457 if ((f->families&FAMILY_MASK(AF_INET6)) &&
3458 (fp = net_udp6_open()) != NULL) {
3459 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
3460 goto outerr;
3461 fclose(fp);
3462 }
3463 return 0;
3464
3465 outerr:
3466 do {
3467 int saved_errno = errno;
3468
3469 if (fp)
3470 fclose(fp);
3471 errno = saved_errno;
3472 return -1;
3473 } while (0);
3474 }
3475
3476 static int raw_show(struct filter *f)
3477 {
3478 FILE *fp = NULL;
3479
3480 if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
3481 return 0;
3482
3483 dg_proto = RAW_PROTO;
3484
3485 if (!getenv("PROC_NET_RAW") && !getenv("PROC_ROOT") &&
3486 inet_show_netlink(f, NULL, IPPROTO_RAW) == 0)
3487 return 0;
3488
3489 if (f->families&FAMILY_MASK(AF_INET)) {
3490 if ((fp = net_raw_open()) == NULL)
3491 goto outerr;
3492 if (generic_record_read(fp, dgram_show_line, f, AF_INET))
3493 goto outerr;
3494 fclose(fp);
3495 }
3496
3497 if ((f->families&FAMILY_MASK(AF_INET6)) &&
3498 (fp = net_raw6_open()) != NULL) {
3499 if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
3500 goto outerr;
3501 fclose(fp);
3502 }
3503 return 0;
3504
3505 outerr:
3506 do {
3507 int saved_errno = errno;
3508
3509 if (fp)
3510 fclose(fp);
3511 errno = saved_errno;
3512 return -1;
3513 } while (0);
3514 }
3515
3516 #define MAX_UNIX_REMEMBER (1024*1024/sizeof(struct sockstat))
3517
3518 static void unix_list_drop_first(struct sockstat **list)
3519 {
3520 struct sockstat *s = *list;
3521
3522 (*list) = (*list)->next;
3523 free(s->name);
3524 free(s);
3525 }
3526
3527 static bool unix_type_skip(struct sockstat *s, struct filter *f)
3528 {
3529 if (s->type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB)))
3530 return true;
3531 if (s->type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB)))
3532 return true;
3533 if (s->type == SOCK_SEQPACKET && !(f->dbs&(1<<UNIX_SQ_DB)))
3534 return true;
3535 return false;
3536 }
3537
3538 static void unix_stats_print(struct sockstat *s, struct filter *f)
3539 {
3540 char port_name[30] = {};
3541
3542 sock_state_print(s);
3543
3544 sock_addr_print(s->name ?: "*", " ",
3545 int_to_str(s->lport, port_name), NULL);
3546 sock_addr_print(s->peer_name ?: "*", " ",
3547 int_to_str(s->rport, port_name), NULL);
3548
3549 proc_ctx_print(s);
3550 }
3551
3552 static int unix_show_sock(const struct sockaddr_nl *addr, struct nlmsghdr *nlh,
3553 void *arg)
3554 {
3555 struct filter *f = (struct filter *)arg;
3556 struct unix_diag_msg *r = NLMSG_DATA(nlh);
3557 struct rtattr *tb[UNIX_DIAG_MAX+1];
3558 char name[128];
3559 struct sockstat stat = { .name = "*", .peer_name = "*" };
3560
3561 parse_rtattr(tb, UNIX_DIAG_MAX, (struct rtattr *)(r+1),
3562 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
3563
3564 stat.type = r->udiag_type;
3565 stat.state = r->udiag_state;
3566 stat.ino = stat.lport = r->udiag_ino;
3567 stat.local.family = stat.remote.family = AF_UNIX;
3568
3569 if (unix_type_skip(&stat, f))
3570 return 0;
3571
3572 if (tb[UNIX_DIAG_RQLEN]) {
3573 struct unix_diag_rqlen *rql = RTA_DATA(tb[UNIX_DIAG_RQLEN]);
3574
3575 stat.rq = rql->udiag_rqueue;
3576 stat.wq = rql->udiag_wqueue;
3577 }
3578 if (tb[UNIX_DIAG_NAME]) {
3579 int len = RTA_PAYLOAD(tb[UNIX_DIAG_NAME]);
3580
3581 memcpy(name, RTA_DATA(tb[UNIX_DIAG_NAME]), len);
3582 name[len] = '\0';
3583 if (name[0] == '\0') {
3584 int i;
3585 for (i = 0; i < len; i++)
3586 if (name[i] == '\0')
3587 name[i] = '@';
3588 }
3589 stat.name = &name[0];
3590 memcpy(stat.local.data, &stat.name, sizeof(stat.name));
3591 }
3592 if (tb[UNIX_DIAG_PEER])
3593 stat.rport = rta_getattr_u32(tb[UNIX_DIAG_PEER]);
3594
3595 if (f->f && run_ssfilter(f->f, &stat) == 0)
3596 return 0;
3597
3598 unix_stats_print(&stat, f);
3599
3600 if (show_mem)
3601 print_skmeminfo(tb, UNIX_DIAG_MEMINFO);
3602 if (show_details) {
3603 if (tb[UNIX_DIAG_SHUTDOWN]) {
3604 unsigned char mask;
3605
3606 mask = rta_getattr_u8(tb[UNIX_DIAG_SHUTDOWN]);
3607 out(" %c-%c",
3608 mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
3609 }
3610 }
3611
3612 return 0;
3613 }
3614
3615 static int handle_netlink_request(struct filter *f, struct nlmsghdr *req,
3616 size_t size, rtnl_filter_t show_one_sock)
3617 {
3618 int ret = -1;
3619 struct rtnl_handle rth;
3620
3621 if (rtnl_open_byproto(&rth, 0, NETLINK_SOCK_DIAG))
3622 return -1;
3623
3624 rth.dump = MAGIC_SEQ;
3625
3626 if (rtnl_send(&rth, req, size) < 0)
3627 goto Exit;
3628
3629 if (rtnl_dump_filter(&rth, show_one_sock, f))
3630 goto Exit;
3631
3632 ret = 0;
3633 Exit:
3634 rtnl_close(&rth);
3635 return ret;
3636 }
3637
3638 static int unix_show_netlink(struct filter *f)
3639 {
3640 DIAG_REQUEST(req, struct unix_diag_req r);
3641
3642 req.r.sdiag_family = AF_UNIX;
3643 req.r.udiag_states = f->states;
3644 req.r.udiag_show = UDIAG_SHOW_NAME | UDIAG_SHOW_PEER | UDIAG_SHOW_RQLEN;
3645 if (show_mem)
3646 req.r.udiag_show |= UDIAG_SHOW_MEMINFO;
3647
3648 return handle_netlink_request(f, &req.nlh, sizeof(req), unix_show_sock);
3649 }
3650
3651 static int unix_show(struct filter *f)
3652 {
3653 FILE *fp;
3654 char buf[256];
3655 char name[128];
3656 int newformat = 0;
3657 int cnt;
3658 struct sockstat *list = NULL;
3659 const int unix_state_map[] = { SS_CLOSE, SS_SYN_SENT,
3660 SS_ESTABLISHED, SS_CLOSING };
3661
3662 if (!filter_af_get(f, AF_UNIX))
3663 return 0;
3664
3665 if (!getenv("PROC_NET_UNIX") && !getenv("PROC_ROOT")
3666 && unix_show_netlink(f) == 0)
3667 return 0;
3668
3669 if ((fp = net_unix_open()) == NULL)
3670 return -1;
3671 if (!fgets(buf, sizeof(buf), fp)) {
3672 fclose(fp);
3673 return -1;
3674 }
3675
3676 if (memcmp(buf, "Peer", 4) == 0)
3677 newformat = 1;
3678 cnt = 0;
3679
3680 while (fgets(buf, sizeof(buf), fp)) {
3681 struct sockstat *u, **insp;
3682 int flags;
3683
3684 if (!(u = calloc(1, sizeof(*u))))
3685 break;
3686
3687 if (sscanf(buf, "%x: %x %x %x %x %x %d %s",
3688 &u->rport, &u->rq, &u->wq, &flags, &u->type,
3689 &u->state, &u->ino, name) < 8)
3690 name[0] = 0;
3691
3692 u->lport = u->ino;
3693 u->local.family = u->remote.family = AF_UNIX;
3694
3695 if (flags & (1 << 16)) {
3696 u->state = SS_LISTEN;
3697 } else if (u->state > 0 &&
3698 u->state <= ARRAY_SIZE(unix_state_map)) {
3699 u->state = unix_state_map[u->state-1];
3700 if (u->type == SOCK_DGRAM && u->state == SS_CLOSE && u->rport)
3701 u->state = SS_ESTABLISHED;
3702 }
3703 if (unix_type_skip(u, f) ||
3704 !(f->states & (1 << u->state))) {
3705 free(u);
3706 continue;
3707 }
3708
3709 if (!newformat) {
3710 u->rport = 0;
3711 u->rq = 0;
3712 u->wq = 0;
3713 }
3714
3715 if (name[0]) {
3716 u->name = strdup(name);
3717 if (!u->name) {
3718 free(u);
3719 break;
3720 }
3721 }
3722
3723 if (u->rport) {
3724 struct sockstat *p;
3725
3726 for (p = list; p; p = p->next) {
3727 if (u->rport == p->lport)
3728 break;
3729 }
3730 if (!p)
3731 u->peer_name = "?";
3732 else
3733 u->peer_name = p->name ? : "*";
3734 }
3735
3736 if (f->f) {
3737 struct sockstat st = {
3738 .local.family = AF_UNIX,
3739 .remote.family = AF_UNIX,
3740 };
3741
3742 memcpy(st.local.data, &u->name, sizeof(u->name));
3743 /* when parsing the old format rport is set to 0 and
3744 * therefore peer_name remains NULL
3745 */
3746 if (u->peer_name && strcmp(u->peer_name, "*"))
3747 memcpy(st.remote.data, &u->peer_name,
3748 sizeof(u->peer_name));
3749 if (run_ssfilter(f->f, &st) == 0) {
3750 free(u->name);
3751 free(u);
3752 continue;
3753 }
3754 }
3755
3756 insp = &list;
3757 while (*insp) {
3758 if (u->type < (*insp)->type ||
3759 (u->type == (*insp)->type &&
3760 u->ino < (*insp)->ino))
3761 break;
3762 insp = &(*insp)->next;
3763 }
3764 u->next = *insp;
3765 *insp = u;
3766
3767 if (++cnt > MAX_UNIX_REMEMBER) {
3768 while (list) {
3769 unix_stats_print(list, f);
3770 unix_list_drop_first(&list);
3771 }
3772 cnt = 0;
3773 }
3774 }
3775 fclose(fp);
3776 while (list) {
3777 unix_stats_print(list, f);
3778 unix_list_drop_first(&list);
3779 }
3780
3781 return 0;
3782 }
3783
3784 static int packet_stats_print(struct sockstat *s, const struct filter *f)
3785 {
3786 const char *addr, *port;
3787 char ll_name[16];
3788
3789 s->local.family = s->remote.family = AF_PACKET;
3790
3791 if (f->f) {
3792 s->local.data[0] = s->prot;
3793 if (run_ssfilter(f->f, s) == 0)
3794 return 1;
3795 }
3796
3797 sock_state_print(s);
3798
3799 if (s->prot == 3)
3800 addr = "*";
3801 else
3802 addr = ll_proto_n2a(htons(s->prot), ll_name, sizeof(ll_name));
3803
3804 if (s->iface == 0)
3805 port = "*";
3806 else
3807 port = xll_index_to_name(s->iface);
3808
3809 sock_addr_print(addr, ":", port, NULL);
3810 sock_addr_print("", "*", "", NULL);
3811
3812 proc_ctx_print(s);
3813
3814 if (show_details)
3815 sock_details_print(s);
3816
3817 return 0;
3818 }
3819
3820 static void packet_show_ring(struct packet_diag_ring *ring)
3821 {
3822 out("blk_size:%d", ring->pdr_block_size);
3823 out(",blk_nr:%d", ring->pdr_block_nr);
3824 out(",frm_size:%d", ring->pdr_frame_size);
3825 out(",frm_nr:%d", ring->pdr_frame_nr);
3826 out(",tmo:%d", ring->pdr_retire_tmo);
3827 out(",features:0x%x", ring->pdr_features);
3828 }
3829
3830 static int packet_show_sock(const struct sockaddr_nl *addr,
3831 struct nlmsghdr *nlh, void *arg)
3832 {
3833 const struct filter *f = arg;
3834 struct packet_diag_msg *r = NLMSG_DATA(nlh);
3835 struct packet_diag_info *pinfo = NULL;
3836 struct packet_diag_ring *ring_rx = NULL, *ring_tx = NULL;
3837 struct rtattr *tb[PACKET_DIAG_MAX+1];
3838 struct sockstat stat = {};
3839 uint32_t fanout = 0;
3840 bool has_fanout = false;
3841
3842 parse_rtattr(tb, PACKET_DIAG_MAX, (struct rtattr *)(r+1),
3843 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
3844
3845 /* use /proc/net/packet if all info are not available */
3846 if (!tb[PACKET_DIAG_MEMINFO])
3847 return -1;
3848
3849 stat.type = r->pdiag_type;
3850 stat.prot = r->pdiag_num;
3851 stat.ino = r->pdiag_ino;
3852 stat.state = SS_CLOSE;
3853 stat.sk = cookie_sk_get(&r->pdiag_cookie[0]);
3854
3855 if (tb[PACKET_DIAG_MEMINFO]) {
3856 __u32 *skmeminfo = RTA_DATA(tb[PACKET_DIAG_MEMINFO]);
3857
3858 stat.rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
3859 }
3860
3861 if (tb[PACKET_DIAG_INFO]) {
3862 pinfo = RTA_DATA(tb[PACKET_DIAG_INFO]);
3863 stat.lport = stat.iface = pinfo->pdi_index;
3864 }
3865
3866 if (tb[PACKET_DIAG_UID])
3867 stat.uid = rta_getattr_u32(tb[PACKET_DIAG_UID]);
3868
3869 if (tb[PACKET_DIAG_RX_RING])
3870 ring_rx = RTA_DATA(tb[PACKET_DIAG_RX_RING]);
3871
3872 if (tb[PACKET_DIAG_TX_RING])
3873 ring_tx = RTA_DATA(tb[PACKET_DIAG_TX_RING]);
3874
3875 if (tb[PACKET_DIAG_FANOUT]) {
3876 has_fanout = true;
3877 fanout = rta_getattr_u32(tb[PACKET_DIAG_FANOUT]);
3878 }
3879
3880 if (packet_stats_print(&stat, f))
3881 return 0;
3882
3883 if (show_details) {
3884 if (pinfo) {
3885 out("\n\tver:%d", pinfo->pdi_version);
3886 out(" cpy_thresh:%d", pinfo->pdi_copy_thresh);
3887 out(" flags( ");
3888 if (pinfo->pdi_flags & PDI_RUNNING)
3889 out("running");
3890 if (pinfo->pdi_flags & PDI_AUXDATA)
3891 out(" auxdata");
3892 if (pinfo->pdi_flags & PDI_ORIGDEV)
3893 out(" origdev");
3894 if (pinfo->pdi_flags & PDI_VNETHDR)
3895 out(" vnethdr");
3896 if (pinfo->pdi_flags & PDI_LOSS)
3897 out(" loss");
3898 if (!pinfo->pdi_flags)
3899 out("0");
3900 out(" )");
3901 }
3902 if (ring_rx) {
3903 out("\n\tring_rx(");
3904 packet_show_ring(ring_rx);
3905 out(")");
3906 }
3907 if (ring_tx) {
3908 out("\n\tring_tx(");
3909 packet_show_ring(ring_tx);
3910 out(")");
3911 }
3912 if (has_fanout) {
3913 uint16_t type = (fanout >> 16) & 0xffff;
3914
3915 out("\n\tfanout(");
3916 out("id:%d,", fanout & 0xffff);
3917 out("type:");
3918
3919 if (type == 0)
3920 out("hash");
3921 else if (type == 1)
3922 out("lb");
3923 else if (type == 2)
3924 out("cpu");
3925 else if (type == 3)
3926 out("roll");
3927 else if (type == 4)
3928 out("random");
3929 else if (type == 5)
3930 out("qm");
3931 else
3932 out("0x%x", type);
3933
3934 out(")");
3935 }
3936 }
3937
3938 if (show_bpf && tb[PACKET_DIAG_FILTER]) {
3939 struct sock_filter *fil =
3940 RTA_DATA(tb[PACKET_DIAG_FILTER]);
3941 int num = RTA_PAYLOAD(tb[PACKET_DIAG_FILTER]) /
3942 sizeof(struct sock_filter);
3943
3944 out("\n\tbpf filter (%d): ", num);
3945 while (num) {
3946 out(" 0x%02x %u %u %u,",
3947 fil->code, fil->jt, fil->jf, fil->k);
3948 num--;
3949 fil++;
3950 }
3951 }
3952 return 0;
3953 }
3954
3955 static int packet_show_netlink(struct filter *f)
3956 {
3957 DIAG_REQUEST(req, struct packet_diag_req r);
3958
3959 req.r.sdiag_family = AF_PACKET;
3960 req.r.pdiag_show = PACKET_SHOW_INFO | PACKET_SHOW_MEMINFO |
3961 PACKET_SHOW_FILTER | PACKET_SHOW_RING_CFG | PACKET_SHOW_FANOUT;
3962
3963 return handle_netlink_request(f, &req.nlh, sizeof(req), packet_show_sock);
3964 }
3965
3966 static int packet_show_line(char *buf, const struct filter *f, int fam)
3967 {
3968 unsigned long long sk;
3969 struct sockstat stat = {};
3970 int type, prot, iface, state, rq, uid, ino;
3971
3972 sscanf(buf, "%llx %*d %d %x %d %d %u %u %u",
3973 &sk,
3974 &type, &prot, &iface, &state,
3975 &rq, &uid, &ino);
3976
3977 if (stat.type == SOCK_RAW && !(f->dbs&(1<<PACKET_R_DB)))
3978 return 0;
3979 if (stat.type == SOCK_DGRAM && !(f->dbs&(1<<PACKET_DG_DB)))
3980 return 0;
3981
3982 stat.type = type;
3983 stat.prot = prot;
3984 stat.lport = stat.iface = iface;
3985 stat.state = state;
3986 stat.rq = rq;
3987 stat.uid = uid;
3988 stat.ino = ino;
3989 stat.state = SS_CLOSE;
3990
3991 if (packet_stats_print(&stat, f))
3992 return 0;
3993
3994 return 0;
3995 }
3996
3997 static int packet_show(struct filter *f)
3998 {
3999 FILE *fp;
4000 int rc = 0;
4001
4002 if (!filter_af_get(f, AF_PACKET) || !(f->states & (1 << SS_CLOSE)))
4003 return 0;
4004
4005 if (!getenv("PROC_NET_PACKET") && !getenv("PROC_ROOT") &&
4006 packet_show_netlink(f) == 0)
4007 return 0;
4008
4009 if ((fp = net_packet_open()) == NULL)
4010 return -1;
4011 if (generic_record_read(fp, packet_show_line, f, AF_PACKET))
4012 rc = -1;
4013
4014 fclose(fp);
4015 return rc;
4016 }
4017
4018 static int netlink_show_one(struct filter *f,
4019 int prot, int pid, unsigned int groups,
4020 int state, int dst_pid, unsigned int dst_group,
4021 int rq, int wq,
4022 unsigned long long sk, unsigned long long cb)
4023 {
4024 struct sockstat st = {
4025 .state = SS_CLOSE,
4026 .rq = rq,
4027 .wq = wq,
4028 .local.family = AF_NETLINK,
4029 .remote.family = AF_NETLINK,
4030 };
4031
4032 SPRINT_BUF(prot_buf) = {};
4033 const char *prot_name;
4034 char procname[64] = {};
4035
4036 if (f->f) {
4037 st.rport = -1;
4038 st.lport = pid;
4039 st.local.data[0] = prot;
4040 if (run_ssfilter(f->f, &st) == 0)
4041 return 1;
4042 }
4043
4044 sock_state_print(&st);
4045
4046 if (resolve_services)
4047 prot_name = nl_proto_n2a(prot, prot_buf, sizeof(prot_buf));
4048 else
4049 prot_name = int_to_str(prot, prot_buf);
4050
4051 if (pid == -1) {
4052 procname[0] = '*';
4053 } else if (resolve_services) {
4054 int done = 0;
4055
4056 if (!pid) {
4057 done = 1;
4058 strncpy(procname, "kernel", 6);
4059 } else if (pid > 0) {
4060 FILE *fp;
4061
4062 snprintf(procname, sizeof(procname), "%s/%d/stat",
4063 getenv("PROC_ROOT") ? : "/proc", pid);
4064 if ((fp = fopen(procname, "r")) != NULL) {
4065 if (fscanf(fp, "%*d (%[^)])", procname) == 1) {
4066 snprintf(procname+strlen(procname),
4067 sizeof(procname)-strlen(procname),
4068 "/%d", pid);
4069 done = 1;
4070 }
4071 fclose(fp);
4072 }
4073 }
4074 if (!done)
4075 int_to_str(pid, procname);
4076 } else {
4077 int_to_str(pid, procname);
4078 }
4079
4080 sock_addr_print(prot_name, ":", procname, NULL);
4081
4082 if (state == NETLINK_CONNECTED) {
4083 char dst_group_buf[30];
4084 char dst_pid_buf[30];
4085
4086 sock_addr_print(int_to_str(dst_group, dst_group_buf), ":",
4087 int_to_str(dst_pid, dst_pid_buf), NULL);
4088 } else {
4089 sock_addr_print("", "*", "", NULL);
4090 }
4091
4092 char *pid_context = NULL;
4093
4094 if (show_proc_ctx) {
4095 /* The pid value will either be:
4096 * 0 if destination kernel - show kernel initial context.
4097 * A valid process pid - use getpidcon.
4098 * A unique value allocated by the kernel or netlink user
4099 * to the process - show context as "not available".
4100 */
4101 if (!pid)
4102 security_get_initial_context("kernel", &pid_context);
4103 else if (pid > 0)
4104 getpidcon(pid, &pid_context);
4105
4106 out(" proc_ctx=%s", pid_context ? : "unavailable");
4107 free(pid_context);
4108 }
4109
4110 if (show_details) {
4111 out(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups);
4112 }
4113
4114 return 0;
4115 }
4116
4117 static int netlink_show_sock(const struct sockaddr_nl *addr,
4118 struct nlmsghdr *nlh, void *arg)
4119 {
4120 struct filter *f = (struct filter *)arg;
4121 struct netlink_diag_msg *r = NLMSG_DATA(nlh);
4122 struct rtattr *tb[NETLINK_DIAG_MAX+1];
4123 int rq = 0, wq = 0;
4124 unsigned long groups = 0;
4125
4126 parse_rtattr(tb, NETLINK_DIAG_MAX, (struct rtattr *)(r+1),
4127 nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
4128
4129 if (tb[NETLINK_DIAG_GROUPS] && RTA_PAYLOAD(tb[NETLINK_DIAG_GROUPS]))
4130 groups = *(unsigned long *) RTA_DATA(tb[NETLINK_DIAG_GROUPS]);
4131
4132 if (tb[NETLINK_DIAG_MEMINFO]) {
4133 const __u32 *skmeminfo;
4134
4135 skmeminfo = RTA_DATA(tb[NETLINK_DIAG_MEMINFO]);
4136
4137 rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
4138 wq = skmeminfo[SK_MEMINFO_WMEM_ALLOC];
4139 }
4140
4141 if (netlink_show_one(f, r->ndiag_protocol, r->ndiag_portid, groups,
4142 r->ndiag_state, r->ndiag_dst_portid, r->ndiag_dst_group,
4143 rq, wq, 0, 0)) {
4144 return 0;
4145 }
4146
4147 if (show_mem) {
4148 out("\t");
4149 print_skmeminfo(tb, NETLINK_DIAG_MEMINFO);
4150 }
4151
4152 return 0;
4153 }
4154
4155 static int netlink_show_netlink(struct filter *f)
4156 {
4157 DIAG_REQUEST(req, struct netlink_diag_req r);
4158
4159 req.r.sdiag_family = AF_NETLINK;
4160 req.r.sdiag_protocol = NDIAG_PROTO_ALL;
4161 req.r.ndiag_show = NDIAG_SHOW_GROUPS | NDIAG_SHOW_MEMINFO;
4162
4163 return handle_netlink_request(f, &req.nlh, sizeof(req), netlink_show_sock);
4164 }
4165
4166 static int netlink_show(struct filter *f)
4167 {
4168 FILE *fp;
4169 char buf[256];
4170 int prot, pid;
4171 unsigned int groups;
4172 int rq, wq, rc;
4173 unsigned long long sk, cb;
4174
4175 if (!filter_af_get(f, AF_NETLINK) || !(f->states & (1 << SS_CLOSE)))
4176 return 0;
4177
4178 if (!getenv("PROC_NET_NETLINK") && !getenv("PROC_ROOT") &&
4179 netlink_show_netlink(f) == 0)
4180 return 0;
4181
4182 if ((fp = net_netlink_open()) == NULL)
4183 return -1;
4184 if (!fgets(buf, sizeof(buf), fp)) {
4185 fclose(fp);
4186 return -1;
4187 }
4188
4189 while (fgets(buf, sizeof(buf), fp)) {
4190 sscanf(buf, "%llx %d %d %x %d %d %llx %d",
4191 &sk,
4192 &prot, &pid, &groups, &rq, &wq, &cb, &rc);
4193
4194 netlink_show_one(f, prot, pid, groups, 0, 0, 0, rq, wq, sk, cb);
4195 }
4196
4197 fclose(fp);
4198 return 0;
4199 }
4200
4201 static bool vsock_type_skip(struct sockstat *s, struct filter *f)
4202 {
4203 if (s->type == SOCK_STREAM && !(f->dbs & (1 << VSOCK_ST_DB)))
4204 return true;
4205 if (s->type == SOCK_DGRAM && !(f->dbs & (1 << VSOCK_DG_DB)))
4206 return true;
4207 return false;
4208 }
4209
4210 static void vsock_addr_print(inet_prefix *a, __u32 port)
4211 {
4212 char cid_str[sizeof("4294967295")];
4213 char port_str[sizeof("4294967295")];
4214 __u32 cid;
4215
4216 memcpy(&cid, a->data, sizeof(cid));
4217
4218 if (cid == ~(__u32)0)
4219 snprintf(cid_str, sizeof(cid_str), "*");
4220 else
4221 snprintf(cid_str, sizeof(cid_str), "%u", cid);
4222
4223 if (port == ~(__u32)0)
4224 snprintf(port_str, sizeof(port_str), "*");
4225 else
4226 snprintf(port_str, sizeof(port_str), "%u", port);
4227
4228 sock_addr_print(cid_str, ":", port_str, NULL);
4229 }
4230
4231 static void vsock_stats_print(struct sockstat *s, struct filter *f)
4232 {
4233 sock_state_print(s);
4234
4235 vsock_addr_print(&s->local, s->lport);
4236 vsock_addr_print(&s->remote, s->rport);
4237
4238 proc_ctx_print(s);
4239 }
4240
4241 static int vsock_show_sock(const struct sockaddr_nl *addr,
4242 struct nlmsghdr *nlh, void *arg)
4243 {
4244 struct filter *f = (struct filter *)arg;
4245 struct vsock_diag_msg *r = NLMSG_DATA(nlh);
4246 struct sockstat stat = {
4247 .type = r->vdiag_type,
4248 .lport = r->vdiag_src_port,
4249 .rport = r->vdiag_dst_port,
4250 .state = r->vdiag_state,
4251 .ino = r->vdiag_ino,
4252 };
4253
4254 vsock_set_inet_prefix(&stat.local, r->vdiag_src_cid);
4255 vsock_set_inet_prefix(&stat.remote, r->vdiag_dst_cid);
4256
4257 if (vsock_type_skip(&stat, f))
4258 return 0;
4259
4260 if (f->f && run_ssfilter(f->f, &stat) == 0)
4261 return 0;
4262
4263 vsock_stats_print(&stat, f);
4264
4265 return 0;
4266 }
4267
4268 static int vsock_show(struct filter *f)
4269 {
4270 DIAG_REQUEST(req, struct vsock_diag_req r);
4271
4272 if (!filter_af_get(f, AF_VSOCK))
4273 return 0;
4274
4275 req.r.sdiag_family = AF_VSOCK;
4276 req.r.vdiag_states = f->states;
4277
4278 return handle_netlink_request(f, &req.nlh, sizeof(req), vsock_show_sock);
4279 }
4280
4281 struct sock_diag_msg {
4282 __u8 sdiag_family;
4283 };
4284
4285 static int generic_show_sock(const struct sockaddr_nl *addr,
4286 struct nlmsghdr *nlh, void *arg)
4287 {
4288 struct sock_diag_msg *r = NLMSG_DATA(nlh);
4289 struct inet_diag_arg inet_arg = { .f = arg, .protocol = IPPROTO_MAX };
4290 int ret;
4291
4292 switch (r->sdiag_family) {
4293 case AF_INET:
4294 case AF_INET6:
4295 inet_arg.rth = inet_arg.f->rth_for_killing;
4296 ret = show_one_inet_sock(addr, nlh, &inet_arg);
4297 break;
4298 case AF_UNIX:
4299 ret = unix_show_sock(addr, nlh, arg);
4300 break;
4301 case AF_PACKET:
4302 ret = packet_show_sock(addr, nlh, arg);
4303 break;
4304 case AF_NETLINK:
4305 ret = netlink_show_sock(addr, nlh, arg);
4306 break;
4307 case AF_VSOCK:
4308 ret = vsock_show_sock(addr, nlh, arg);
4309 break;
4310 default:
4311 ret = -1;
4312 }
4313
4314 render();
4315
4316 return ret;
4317 }
4318
4319 static int handle_follow_request(struct filter *f)
4320 {
4321 int ret = 0;
4322 int groups = 0;
4323 struct rtnl_handle rth, rth2;
4324
4325 if (f->families & FAMILY_MASK(AF_INET) && f->dbs & (1 << TCP_DB))
4326 groups |= 1 << (SKNLGRP_INET_TCP_DESTROY - 1);
4327 if (f->families & FAMILY_MASK(AF_INET) && f->dbs & (1 << UDP_DB))
4328 groups |= 1 << (SKNLGRP_INET_UDP_DESTROY - 1);
4329 if (f->families & FAMILY_MASK(AF_INET6) && f->dbs & (1 << TCP_DB))
4330 groups |= 1 << (SKNLGRP_INET6_TCP_DESTROY - 1);
4331 if (f->families & FAMILY_MASK(AF_INET6) && f->dbs & (1 << UDP_DB))
4332 groups |= 1 << (SKNLGRP_INET6_UDP_DESTROY - 1);
4333
4334 if (groups == 0)
4335 return -1;
4336
4337 if (rtnl_open_byproto(&rth, groups, NETLINK_SOCK_DIAG))
4338 return -1;
4339
4340 rth.dump = 0;
4341 rth.local.nl_pid = 0;
4342
4343 if (f->kill) {
4344 if (rtnl_open_byproto(&rth2, groups, NETLINK_SOCK_DIAG)) {
4345 rtnl_close(&rth);
4346 return -1;
4347 }
4348 f->rth_for_killing = &rth2;
4349 }
4350
4351 if (rtnl_dump_filter(&rth, generic_show_sock, f))
4352 ret = -1;
4353
4354 rtnl_close(&rth);
4355 if (f->rth_for_killing)
4356 rtnl_close(f->rth_for_killing);
4357 return ret;
4358 }
4359
4360 static int get_snmp_int(char *proto, char *key, int *result)
4361 {
4362 char buf[1024];
4363 FILE *fp;
4364 int protolen = strlen(proto);
4365 int keylen = strlen(key);
4366
4367 *result = 0;
4368
4369 if ((fp = net_snmp_open()) == NULL)
4370 return -1;
4371
4372 while (fgets(buf, sizeof(buf), fp) != NULL) {
4373 char *p = buf;
4374 int pos = 0;
4375
4376 if (memcmp(buf, proto, protolen))
4377 continue;
4378 while ((p = strchr(p, ' ')) != NULL) {
4379 pos++;
4380 p++;
4381 if (memcmp(p, key, keylen) == 0 &&
4382 (p[keylen] == ' ' || p[keylen] == '\n'))
4383 break;
4384 }
4385 if (fgets(buf, sizeof(buf), fp) == NULL)
4386 break;
4387 if (memcmp(buf, proto, protolen))
4388 break;
4389 p = buf;
4390 while ((p = strchr(p, ' ')) != NULL) {
4391 p++;
4392 if (--pos == 0) {
4393 sscanf(p, "%d", result);
4394 fclose(fp);
4395 return 0;
4396 }
4397 }
4398 }
4399
4400 fclose(fp);
4401 errno = ESRCH;
4402 return -1;
4403 }
4404
4405
4406 /* Get stats from sockstat */
4407
4408 struct ssummary {
4409 int socks;
4410 int tcp_mem;
4411 int tcp_total;
4412 int tcp_orphans;
4413 int tcp_tws;
4414 int tcp4_hashed;
4415 int udp4;
4416 int raw4;
4417 int frag4;
4418 int frag4_mem;
4419 int tcp6_hashed;
4420 int udp6;
4421 int raw6;
4422 int frag6;
4423 int frag6_mem;
4424 };
4425
4426 static void get_sockstat_line(char *line, struct ssummary *s)
4427 {
4428 char id[256], rem[256];
4429
4430 if (sscanf(line, "%[^ ] %[^\n]\n", id, rem) != 2)
4431 return;
4432
4433 if (strcmp(id, "sockets:") == 0)
4434 sscanf(rem, "%*s%d", &s->socks);
4435 else if (strcmp(id, "UDP:") == 0)
4436 sscanf(rem, "%*s%d", &s->udp4);
4437 else if (strcmp(id, "UDP6:") == 0)
4438 sscanf(rem, "%*s%d", &s->udp6);
4439 else if (strcmp(id, "RAW:") == 0)
4440 sscanf(rem, "%*s%d", &s->raw4);
4441 else if (strcmp(id, "RAW6:") == 0)
4442 sscanf(rem, "%*s%d", &s->raw6);
4443 else if (strcmp(id, "TCP6:") == 0)
4444 sscanf(rem, "%*s%d", &s->tcp6_hashed);
4445 else if (strcmp(id, "FRAG:") == 0)
4446 sscanf(rem, "%*s%d%*s%d", &s->frag4, &s->frag4_mem);
4447 else if (strcmp(id, "FRAG6:") == 0)
4448 sscanf(rem, "%*s%d%*s%d", &s->frag6, &s->frag6_mem);
4449 else if (strcmp(id, "TCP:") == 0)
4450 sscanf(rem, "%*s%d%*s%d%*s%d%*s%d%*s%d",
4451 &s->tcp4_hashed,
4452 &s->tcp_orphans, &s->tcp_tws, &s->tcp_total, &s->tcp_mem);
4453 }
4454
4455 static int get_sockstat(struct ssummary *s)
4456 {
4457 char buf[256];
4458 FILE *fp;
4459
4460 memset(s, 0, sizeof(*s));
4461
4462 if ((fp = net_sockstat_open()) == NULL)
4463 return -1;
4464 while (fgets(buf, sizeof(buf), fp) != NULL)
4465 get_sockstat_line(buf, s);
4466 fclose(fp);
4467
4468 if ((fp = net_sockstat6_open()) == NULL)
4469 return 0;
4470 while (fgets(buf, sizeof(buf), fp) != NULL)
4471 get_sockstat_line(buf, s);
4472 fclose(fp);
4473
4474 return 0;
4475 }
4476
4477 static int print_summary(void)
4478 {
4479 struct ssummary s;
4480 int tcp_estab;
4481
4482 if (get_sockstat(&s) < 0)
4483 perror("ss: get_sockstat");
4484 if (get_snmp_int("Tcp:", "CurrEstab", &tcp_estab) < 0)
4485 perror("ss: get_snmpstat");
4486
4487 get_slabstat(&slabstat);
4488
4489 printf("Total: %d (kernel %d)\n", s.socks, slabstat.socks);
4490
4491 printf("TCP: %d (estab %d, closed %d, orphaned %d, synrecv %d, timewait %d/%d), ports %d\n",
4492 s.tcp_total + slabstat.tcp_syns + s.tcp_tws,
4493 tcp_estab,
4494 s.tcp_total - (s.tcp4_hashed+s.tcp6_hashed-s.tcp_tws),
4495 s.tcp_orphans,
4496 slabstat.tcp_syns,
4497 s.tcp_tws, slabstat.tcp_tws,
4498 slabstat.tcp_ports
4499 );
4500
4501 printf("\n");
4502 printf("Transport Total IP IPv6\n");
4503 printf("* %-9d %-9s %-9s\n", slabstat.socks, "-", "-");
4504 printf("RAW %-9d %-9d %-9d\n", s.raw4+s.raw6, s.raw4, s.raw6);
4505 printf("UDP %-9d %-9d %-9d\n", s.udp4+s.udp6, s.udp4, s.udp6);
4506 printf("TCP %-9d %-9d %-9d\n", s.tcp4_hashed+s.tcp6_hashed, s.tcp4_hashed, s.tcp6_hashed);
4507 printf("INET %-9d %-9d %-9d\n",
4508 s.raw4+s.udp4+s.tcp4_hashed+
4509 s.raw6+s.udp6+s.tcp6_hashed,
4510 s.raw4+s.udp4+s.tcp4_hashed,
4511 s.raw6+s.udp6+s.tcp6_hashed);
4512 printf("FRAG %-9d %-9d %-9d\n", s.frag4+s.frag6, s.frag4, s.frag6);
4513
4514 printf("\n");
4515
4516 return 0;
4517 }
4518
4519 static void _usage(FILE *dest)
4520 {
4521 fprintf(dest,
4522 "Usage: ss [ OPTIONS ]\n"
4523 " ss [ OPTIONS ] [ FILTER ]\n"
4524 " -h, --help this message\n"
4525 " -V, --version output version information\n"
4526 " -n, --numeric don't resolve service names\n"
4527 " -r, --resolve resolve host names\n"
4528 " -a, --all display all sockets\n"
4529 " -l, --listening display listening sockets\n"
4530 " -o, --options show timer information\n"
4531 " -e, --extended show detailed socket information\n"
4532 " -m, --memory show socket memory usage\n"
4533 " -p, --processes show process using socket\n"
4534 " -i, --info show internal TCP information\n"
4535 " -s, --summary show socket usage summary\n"
4536 " -b, --bpf show bpf filter socket information\n"
4537 " -E, --events continually display sockets as they are destroyed\n"
4538 " -Z, --context display process SELinux security contexts\n"
4539 " -z, --contexts display process and socket SELinux security contexts\n"
4540 " -N, --net switch to the specified network namespace name\n"
4541 "\n"
4542 " -4, --ipv4 display only IP version 4 sockets\n"
4543 " -6, --ipv6 display only IP version 6 sockets\n"
4544 " -0, --packet display PACKET sockets\n"
4545 " -t, --tcp display only TCP sockets\n"
4546 " -S, --sctp display only SCTP sockets\n"
4547 " -u, --udp display only UDP sockets\n"
4548 " -d, --dccp display only DCCP sockets\n"
4549 " -w, --raw display only RAW sockets\n"
4550 " -x, --unix display only Unix domain sockets\n"
4551 " --vsock display only vsock sockets\n"
4552 " -f, --family=FAMILY display sockets of type FAMILY\n"
4553 " FAMILY := {inet|inet6|link|unix|netlink|vsock|help}\n"
4554 "\n"
4555 " -K, --kill forcibly close sockets, display what was closed\n"
4556 " -H, --no-header Suppress header line\n"
4557 "\n"
4558 " -A, --query=QUERY, --socket=QUERY\n"
4559 " QUERY := {all|inet|tcp|udp|raw|unix|unix_dgram|unix_stream|unix_seqpacket|packet|netlink|vsock_stream|vsock_dgram}[,QUERY]\n"
4560 "\n"
4561 " -D, --diag=FILE Dump raw information about TCP sockets to FILE\n"
4562 " -F, --filter=FILE read filter information from FILE\n"
4563 " FILTER := [ state STATE-FILTER ] [ EXPRESSION ]\n"
4564 " STATE-FILTER := {all|connected|synchronized|bucket|big|TCP-STATES}\n"
4565 " TCP-STATES := {established|syn-sent|syn-recv|fin-wait-{1,2}|time-wait|closed|close-wait|last-ack|listening|closing}\n"
4566 " connected := {established|syn-sent|syn-recv|fin-wait-{1,2}|time-wait|close-wait|last-ack|closing}\n"
4567 " synchronized := {established|syn-recv|fin-wait-{1,2}|time-wait|close-wait|last-ack|closing}\n"
4568 " bucket := {syn-recv|time-wait}\n"
4569 " big := {established|syn-sent|fin-wait-{1,2}|closed|close-wait|last-ack|listening|closing}\n"
4570 );
4571 }
4572
4573 static void help(void) __attribute__((noreturn));
4574 static void help(void)
4575 {
4576 _usage(stdout);
4577 exit(0);
4578 }
4579
4580 static void usage(void) __attribute__((noreturn));
4581 static void usage(void)
4582 {
4583 _usage(stderr);
4584 exit(-1);
4585 }
4586
4587
4588 static int scan_state(const char *state)
4589 {
4590 static const char * const sstate_namel[] = {
4591 "UNKNOWN",
4592 [SS_ESTABLISHED] = "established",
4593 [SS_SYN_SENT] = "syn-sent",
4594 [SS_SYN_RECV] = "syn-recv",
4595 [SS_FIN_WAIT1] = "fin-wait-1",
4596 [SS_FIN_WAIT2] = "fin-wait-2",
4597 [SS_TIME_WAIT] = "time-wait",
4598 [SS_CLOSE] = "unconnected",
4599 [SS_CLOSE_WAIT] = "close-wait",
4600 [SS_LAST_ACK] = "last-ack",
4601 [SS_LISTEN] = "listening",
4602 [SS_CLOSING] = "closing",
4603 };
4604 int i;
4605
4606 if (strcasecmp(state, "close") == 0 ||
4607 strcasecmp(state, "closed") == 0)
4608 return (1<<SS_CLOSE);
4609 if (strcasecmp(state, "syn-rcv") == 0)
4610 return (1<<SS_SYN_RECV);
4611 if (strcasecmp(state, "established") == 0)
4612 return (1<<SS_ESTABLISHED);
4613 if (strcasecmp(state, "all") == 0)
4614 return SS_ALL;
4615 if (strcasecmp(state, "connected") == 0)
4616 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN));
4617 if (strcasecmp(state, "synchronized") == 0)
4618 return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN)|(1<<SS_SYN_SENT));
4619 if (strcasecmp(state, "bucket") == 0)
4620 return (1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT);
4621 if (strcasecmp(state, "big") == 0)
4622 return SS_ALL & ~((1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT));
4623 for (i = 0; i < SS_MAX; i++) {
4624 if (strcasecmp(state, sstate_namel[i]) == 0)
4625 return (1<<i);
4626 }
4627
4628 fprintf(stderr, "ss: wrong state name: %s\n", state);
4629 exit(-1);
4630 }
4631
4632 /* Values 'v' and 'V' are already used so a non-character is used */
4633 #define OPT_VSOCK 256
4634
4635 static const struct option long_opts[] = {
4636 { "numeric", 0, 0, 'n' },
4637 { "resolve", 0, 0, 'r' },
4638 { "options", 0, 0, 'o' },
4639 { "extended", 0, 0, 'e' },
4640 { "memory", 0, 0, 'm' },
4641 { "info", 0, 0, 'i' },
4642 { "processes", 0, 0, 'p' },
4643 { "bpf", 0, 0, 'b' },
4644 { "events", 0, 0, 'E' },
4645 { "dccp", 0, 0, 'd' },
4646 { "tcp", 0, 0, 't' },
4647 { "sctp", 0, 0, 'S' },
4648 { "udp", 0, 0, 'u' },
4649 { "raw", 0, 0, 'w' },
4650 { "unix", 0, 0, 'x' },
4651 { "vsock", 0, 0, OPT_VSOCK },
4652 { "all", 0, 0, 'a' },
4653 { "listening", 0, 0, 'l' },
4654 { "ipv4", 0, 0, '4' },
4655 { "ipv6", 0, 0, '6' },
4656 { "packet", 0, 0, '0' },
4657 { "family", 1, 0, 'f' },
4658 { "socket", 1, 0, 'A' },
4659 { "query", 1, 0, 'A' },
4660 { "summary", 0, 0, 's' },
4661 { "diag", 1, 0, 'D' },
4662 { "filter", 1, 0, 'F' },
4663 { "version", 0, 0, 'V' },
4664 { "help", 0, 0, 'h' },
4665 { "context", 0, 0, 'Z' },
4666 { "contexts", 0, 0, 'z' },
4667 { "net", 1, 0, 'N' },
4668 { "kill", 0, 0, 'K' },
4669 { "no-header", 0, 0, 'H' },
4670 { 0 }
4671
4672 };
4673
4674 int main(int argc, char *argv[])
4675 {
4676 int saw_states = 0;
4677 int saw_query = 0;
4678 int do_summary = 0;
4679 const char *dump_tcpdiag = NULL;
4680 FILE *filter_fp = NULL;
4681 int ch;
4682 int state_filter = 0;
4683
4684 while ((ch = getopt_long(argc, argv,
4685 "dhaletuwxnro460spbEf:miA:D:F:vVzZN:KHS",
4686 long_opts, NULL)) != EOF) {
4687 switch (ch) {
4688 case 'n':
4689 resolve_services = 0;
4690 break;
4691 case 'r':
4692 resolve_hosts = 1;
4693 break;
4694 case 'o':
4695 show_options = 1;
4696 break;
4697 case 'e':
4698 show_options = 1;
4699 show_details++;
4700 break;
4701 case 'm':
4702 show_mem = 1;
4703 break;
4704 case 'i':
4705 show_tcpinfo = 1;
4706 break;
4707 case 'p':
4708 show_users++;
4709 user_ent_hash_build();
4710 break;
4711 case 'b':
4712 show_options = 1;
4713 show_bpf++;
4714 break;
4715 case 'E':
4716 follow_events = 1;
4717 break;
4718 case 'd':
4719 filter_db_set(&current_filter, DCCP_DB, true);
4720 break;
4721 case 't':
4722 filter_db_set(&current_filter, TCP_DB, true);
4723 break;
4724 case 'S':
4725 filter_db_set(&current_filter, SCTP_DB, true);
4726 break;
4727 case 'u':
4728 filter_db_set(&current_filter, UDP_DB, true);
4729 break;
4730 case 'w':
4731 filter_db_set(&current_filter, RAW_DB, true);
4732 break;
4733 case 'x':
4734 filter_af_set(&current_filter, AF_UNIX);
4735 break;
4736 case OPT_VSOCK:
4737 filter_af_set(&current_filter, AF_VSOCK);
4738 break;
4739 case 'a':
4740 state_filter = SS_ALL;
4741 break;
4742 case 'l':
4743 state_filter = (1 << SS_LISTEN) | (1 << SS_CLOSE);
4744 break;
4745 case '4':
4746 filter_af_set(&current_filter, AF_INET);
4747 break;
4748 case '6':
4749 filter_af_set(&current_filter, AF_INET6);
4750 break;
4751 case '0':
4752 filter_af_set(&current_filter, AF_PACKET);
4753 break;
4754 case 'f':
4755 if (strcmp(optarg, "inet") == 0)
4756 filter_af_set(&current_filter, AF_INET);
4757 else if (strcmp(optarg, "inet6") == 0)
4758 filter_af_set(&current_filter, AF_INET6);
4759 else if (strcmp(optarg, "link") == 0)
4760 filter_af_set(&current_filter, AF_PACKET);
4761 else if (strcmp(optarg, "unix") == 0)
4762 filter_af_set(&current_filter, AF_UNIX);
4763 else if (strcmp(optarg, "netlink") == 0)
4764 filter_af_set(&current_filter, AF_NETLINK);
4765 else if (strcmp(optarg, "vsock") == 0)
4766 filter_af_set(&current_filter, AF_VSOCK);
4767 else if (strcmp(optarg, "help") == 0)
4768 help();
4769 else {
4770 fprintf(stderr, "ss: \"%s\" is invalid family\n",
4771 optarg);
4772 usage();
4773 }
4774 break;
4775 case 'A':
4776 {
4777 char *p, *p1;
4778
4779 if (!saw_query) {
4780 current_filter.dbs = 0;
4781 state_filter = state_filter ?
4782 state_filter : SS_CONN;
4783 saw_query = 1;
4784 do_default = 0;
4785 }
4786 p = p1 = optarg;
4787 do {
4788 bool enable = true;
4789
4790 if ((p1 = strchr(p, ',')) != NULL)
4791 *p1 = 0;
4792 if (p[0] == '!') {
4793 enable = false;
4794 p++;
4795 }
4796 if (strcmp(p, "all") == 0) {
4797 filter_default_dbs(&current_filter, enable);
4798 } else if (strcmp(p, "inet") == 0) {
4799 filter_db_set(&current_filter, UDP_DB, enable);
4800 filter_db_set(&current_filter, DCCP_DB, enable);
4801 filter_db_set(&current_filter, TCP_DB, enable);
4802 filter_db_set(&current_filter, SCTP_DB, enable);
4803 filter_db_set(&current_filter, RAW_DB, enable);
4804 } else if (strcmp(p, "udp") == 0) {
4805 filter_db_set(&current_filter, UDP_DB, enable);
4806 } else if (strcmp(p, "dccp") == 0) {
4807 filter_db_set(&current_filter, DCCP_DB, enable);
4808 } else if (strcmp(p, "tcp") == 0) {
4809 filter_db_set(&current_filter, TCP_DB, enable);
4810 } else if (strcmp(p, "sctp") == 0) {
4811 filter_db_set(&current_filter, SCTP_DB, enable);
4812 } else if (strcmp(p, "raw") == 0) {
4813 filter_db_set(&current_filter, RAW_DB, enable);
4814 } else if (strcmp(p, "unix") == 0) {
4815 filter_db_set(&current_filter, UNIX_ST_DB, enable);
4816 filter_db_set(&current_filter, UNIX_DG_DB, enable);
4817 filter_db_set(&current_filter, UNIX_SQ_DB, enable);
4818 } else if (strcasecmp(p, "unix_stream") == 0 ||
4819 strcmp(p, "u_str") == 0) {
4820 filter_db_set(&current_filter, UNIX_ST_DB, enable);
4821 } else if (strcasecmp(p, "unix_dgram") == 0 ||
4822 strcmp(p, "u_dgr") == 0) {
4823 filter_db_set(&current_filter, UNIX_DG_DB, enable);
4824 } else if (strcasecmp(p, "unix_seqpacket") == 0 ||
4825 strcmp(p, "u_seq") == 0) {
4826 filter_db_set(&current_filter, UNIX_SQ_DB, enable);
4827 } else if (strcmp(p, "packet") == 0) {
4828 filter_db_set(&current_filter, PACKET_R_DB, enable);
4829 filter_db_set(&current_filter, PACKET_DG_DB, enable);
4830 } else if (strcmp(p, "packet_raw") == 0 ||
4831 strcmp(p, "p_raw") == 0) {
4832 filter_db_set(&current_filter, PACKET_R_DB, enable);
4833 } else if (strcmp(p, "packet_dgram") == 0 ||
4834 strcmp(p, "p_dgr") == 0) {
4835 filter_db_set(&current_filter, PACKET_DG_DB, enable);
4836 } else if (strcmp(p, "netlink") == 0) {
4837 filter_db_set(&current_filter, NETLINK_DB, enable);
4838 } else if (strcmp(p, "vsock") == 0) {
4839 filter_db_set(&current_filter, VSOCK_ST_DB, enable);
4840 filter_db_set(&current_filter, VSOCK_DG_DB, enable);
4841 } else if (strcmp(p, "vsock_stream") == 0 ||
4842 strcmp(p, "v_str") == 0) {
4843 filter_db_set(&current_filter, VSOCK_ST_DB, enable);
4844 } else if (strcmp(p, "vsock_dgram") == 0 ||
4845 strcmp(p, "v_dgr") == 0) {
4846 filter_db_set(&current_filter, VSOCK_DG_DB, enable);
4847 } else {
4848 fprintf(stderr, "ss: \"%s\" is illegal socket table id\n", p);
4849 usage();
4850 }
4851 p = p1 + 1;
4852 } while (p1);
4853 break;
4854 }
4855 case 's':
4856 do_summary = 1;
4857 break;
4858 case 'D':
4859 dump_tcpdiag = optarg;
4860 break;
4861 case 'F':
4862 if (filter_fp) {
4863 fprintf(stderr, "More than one filter file\n");
4864 exit(-1);
4865 }
4866 if (optarg[0] == '-')
4867 filter_fp = stdin;
4868 else
4869 filter_fp = fopen(optarg, "r");
4870 if (!filter_fp) {
4871 perror("fopen filter file");
4872 exit(-1);
4873 }
4874 break;
4875 case 'v':
4876 case 'V':
4877 printf("ss utility, iproute2-ss%s\n", SNAPSHOT);
4878 exit(0);
4879 case 'z':
4880 show_sock_ctx++;
4881 /* fall through */
4882 case 'Z':
4883 if (is_selinux_enabled() <= 0) {
4884 fprintf(stderr, "ss: SELinux is not enabled.\n");
4885 exit(1);
4886 }
4887 show_proc_ctx++;
4888 user_ent_hash_build();
4889 break;
4890 case 'N':
4891 if (netns_switch(optarg))
4892 exit(1);
4893 break;
4894 case 'K':
4895 current_filter.kill = 1;
4896 break;
4897 case 'H':
4898 show_header = 0;
4899 break;
4900 case 'h':
4901 help();
4902 case '?':
4903 default:
4904 usage();
4905 }
4906 }
4907
4908 argc -= optind;
4909 argv += optind;
4910
4911 if (do_summary) {
4912 print_summary();
4913 if (do_default && argc == 0)
4914 exit(0);
4915 }
4916
4917 while (argc > 0) {
4918 if (strcmp(*argv, "state") == 0) {
4919 NEXT_ARG();
4920 if (!saw_states)
4921 state_filter = 0;
4922 state_filter |= scan_state(*argv);
4923 saw_states = 1;
4924 } else if (strcmp(*argv, "exclude") == 0 ||
4925 strcmp(*argv, "excl") == 0) {
4926 NEXT_ARG();
4927 if (!saw_states)
4928 state_filter = SS_ALL;
4929 state_filter &= ~scan_state(*argv);
4930 saw_states = 1;
4931 } else {
4932 break;
4933 }
4934 argc--; argv++;
4935 }
4936
4937 if (do_default) {
4938 state_filter = state_filter ? state_filter : SS_CONN;
4939 filter_default_dbs(&current_filter, true);
4940 }
4941
4942 filter_states_set(&current_filter, state_filter);
4943 filter_merge_defaults(&current_filter);
4944
4945 if (resolve_services && resolve_hosts &&
4946 (current_filter.dbs & (UNIX_DBM|INET_L4_DBM)))
4947 init_service_resolver();
4948
4949 if (current_filter.dbs == 0) {
4950 fprintf(stderr, "ss: no socket tables to show with such filter.\n");
4951 exit(0);
4952 }
4953 if (current_filter.families == 0) {
4954 fprintf(stderr, "ss: no families to show with such filter.\n");
4955 exit(0);
4956 }
4957 if (current_filter.states == 0) {
4958 fprintf(stderr, "ss: no socket states to show with such filter.\n");
4959 exit(0);
4960 }
4961
4962 if (dump_tcpdiag) {
4963 FILE *dump_fp = stdout;
4964
4965 if (!(current_filter.dbs & (1<<TCP_DB))) {
4966 fprintf(stderr, "ss: tcpdiag dump requested and no tcp in filter.\n");
4967 exit(0);
4968 }
4969 if (dump_tcpdiag[0] != '-') {
4970 dump_fp = fopen(dump_tcpdiag, "w");
4971 if (!dump_tcpdiag) {
4972 perror("fopen dump file");
4973 exit(-1);
4974 }
4975 }
4976 inet_show_netlink(&current_filter, dump_fp, IPPROTO_TCP);
4977 fflush(dump_fp);
4978 exit(0);
4979 }
4980
4981 if (ssfilter_parse(&current_filter.f, argc, argv, filter_fp))
4982 usage();
4983
4984 if (!(current_filter.dbs & (current_filter.dbs - 1)))
4985 columns[COL_NETID].disabled = 1;
4986
4987 if (!(current_filter.states & (current_filter.states - 1)))
4988 columns[COL_STATE].disabled = 1;
4989
4990 if (show_header)
4991 print_header();
4992
4993 fflush(stdout);
4994
4995 if (follow_events)
4996 exit(handle_follow_request(&current_filter));
4997
4998 if (current_filter.dbs & (1<<NETLINK_DB))
4999 netlink_show(&current_filter);
5000 if (current_filter.dbs & PACKET_DBM)
5001 packet_show(&current_filter);
5002 if (current_filter.dbs & UNIX_DBM)
5003 unix_show(&current_filter);
5004 if (current_filter.dbs & (1<<RAW_DB))
5005 raw_show(&current_filter);
5006 if (current_filter.dbs & (1<<UDP_DB))
5007 udp_show(&current_filter);
5008 if (current_filter.dbs & (1<<TCP_DB))
5009 tcp_show(&current_filter);
5010 if (current_filter.dbs & (1<<DCCP_DB))
5011 dccp_show(&current_filter);
5012 if (current_filter.dbs & (1<<SCTP_DB))
5013 sctp_show(&current_filter);
5014 if (current_filter.dbs & VSOCK_DBM)
5015 vsock_show(&current_filter);
5016
5017 if (show_users || show_proc_ctx || show_sock_ctx)
5018 user_ent_destroy();
5019
5020 render();
5021
5022 return 0;
5023 }
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