Commit 2f7b72f9 authored Sep 27, 2010 by Brian Carlstrom

netstat should include /proc/net/tcp6 and /proc/net/udp6 data

Update netstat.c to process /proc/net/tcp6 and /proc/net/udp6.
Example input and output and output follows.

cat /proc/net/tcp:
sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode
0: 0100007F:13AD 00000000:0000 0A 00000000:00000000 00:00000000 00000000 0 0 669 1 c74dbb40 300 0 0 2 -1
1: 0100007F:A432 0100007F:2253 01 00000000:00000000 00:00000000 00000000 0 0 15257 1 c74da040 22 4 16 2 -1

cat /proc/net/udp:
sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode ref pointer drops

cat /proc/net/tcp6:
sl local_address remote_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode
0: 00000000000000000000000000000000:8A88 00000000000000000000000000000000:0000 0A 00000000:00000000 00:00000000 00000000 0 0 15461 1 c730aaa0 300 0 0 2 -1
1: 00000000000000000000000000000000:2253 00000000000000000000000000000000:0000 0A 00000000:00000000 00:00000000 00000000 0 0 15255 1 c7393060 300 0 0 2 -1
2: 00000000000000000000000000000000:C91B 00000000000000000000000000000000:0000 0A 00000000:00000000 00:00000000 00000000 0 0 15261 1 c6591080 300 0 0 2 -1
3: 0000000000000000FFFF00000100007F:C91B 0000000000000000FFFF00000100007F:9238 01 00000000:00000000 00:00000000 00000000 0 0 15263 1 c7394aa0 22 4 29 4 -1
4: 0000000000000000FFFF00000100007F:C0E9 0000000000000000FFFF00000100007F:D3A4 01 00000000:00000000 00:00000000 00000000 0 0 15274 1 c7393aa0 22 4 26 4 -1
5: 0000000000000000FFFF00000100007F:C41A 0000000000000000FFFF00000100007F:B031 01 00000000:00000000 00:00000000 00000000 0 0 15269 1 c7126ac0 22 4 29 4 -1
6: 0000000000000000FFFF00000100007F:2253 0000000000000000FFFF00000100007F:A432 01 00000000:00000000 00:00000000 00000000 0 0 15256 1 c65e9040 21 0 0 5 -1
7: 0000000000000000FFFF00000100007F:9238 0000000000000000FFFF00000100007F:C91B 01 00000000:00000000 00:00000000 00000000 0 0 15262 1 c7394580 22 4 16 4 -1
8: 0000000000000000FFFF00000100007F:B031 0000000000000000FFFF00000100007F:C41A 01 00000000:00000000 00:00000000 00000000 0 0 15268 1 c71585a0 22 4 16 4 -1
9: 0000000000000000FFFF00000100007F:8A88 0000000000000000FFFF00000100007F:8A31 01 00000000:00000000 00:00000000 00000000 0 0 15503 1 c71265a0 22 4 30 2 -1
10: 0000000000000000FFFF00000100007F:D3A4 0000000000000000FFFF00000100007F:C0E9 01 00000000:00000000 00:00000000 00000000 0 0 15273 1 c7126080 22 4 12 4 -1
11: 0000000000000000FFFF00000100007F:8A31 0000000000000000FFFF00000100007F:8A88 01 00000000:00000000 00:00000000 00000000 0 0 15502 1 c730a060 22 0 0 3 -1

cat /proc/net/udp6:
sl local_address remote_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode ref pointer drops
86: 00000000000000000000000000000000:A256 00000000000000000000000000000000:0000 07 00000000:00000000 00:00000000 00000000 1000 0 14302 2 c6d13820 0
102: 00000000000000000000000000000000:A466 00000000000000000000000000000000:0000 07 00000000:00000000 00:00000000 00000000 1000 0 14301 2 c6d13ac0 0
125: 00000000000000000000000000000000:8B7D 00000000000000000000000000000000:0000 07 00000000:00000000 00:00000000 00000000 1000 0 14295 2 c6d13d60 0

netstat:
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 127.0.0.1:5037 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:42034 127.0.0.1:8787 ESTABLISHED
tcp6 0 0 :::35464 :::* LISTEN
tcp6 0 0 :::8787 :::* LISTEN
tcp6 0 0 :::51483 :::* LISTEN
tcp6 0 0 ::ffff:127.0.0.1:51483 ::ffff:127.0.0.1:37432 ESTABLISHED
tcp6 0 0 ::ffff:127.0.0.1:49385 ::ffff:127.0.0.1:54180 ESTABLISHED
tcp6 0 0 ::ffff:127.0.0.1:50202 ::ffff:127.0.0.1:45105 ESTABLISHED
tcp6 0 0 ::ffff:127.0.0.1:8787 ::ffff:127.0.0.1:42034 ESTABLISHED
tcp6 0 0 ::ffff:127.0.0.1:37432 ::ffff:127.0.0.1:51483 ESTABLISHED
tcp6 0 0 ::ffff:127.0.0.1:45105 ::ffff:127.0.0.1:50202 ESTABLISHED
tcp6 0 0 ::ffff:127.0.0.1:35464 ::ffff:127.0.0.1:35377 ESTABLISHED
tcp6 0 0 ::ffff:127.0.0.1:54180 ::ffff:127.0.0.1:49385 ESTABLISHED
tcp6 0 0 ::ffff:127.0.0.1:35377 ::ffff:127.0.0.1:35464 ESTABLISHED
udp6 0 0 :::41558 :::* CLOSE
udp6 0 0 :::42086 :::* CLOSE
udp6 0 0 :::35709 :::* CLOSE

Bug: 2511871

Change-Id: I25e0470ba65e8a88e57506ae26232a7c43a9c16b

parent d55f0adf

toolbox/netstat.c

+83 −49

Original line number	Diff line number	Diff line
		@@ -29,16 +29,30 @@
		* SUCH DAMAGE.
		*/

		#include <arpa/inet.h>
		#include <stdio.h>
		#include <stdlib.h>
		#include <sys/socket.h>
		#include <sys/types.h>

		typedef union iaddr iaddr;
		typedef union iaddr6 iaddr6;

		union iaddr {
		unsigned u;
		unsigned char b[4];
		};

		union iaddr6 {
		struct {
		unsigned a;
		unsigned b;
		unsigned c;
		unsigned d;
		} u;
		unsigned char b[16];
		};

		static const char *state2str(unsigned state)
		{
		switch(state){
		@@ -57,64 +71,84 @@ static const char *state2str(unsigned state)
		}
		}

		void addr2str(iaddr addr, unsigned port, char *buf)
		/* addr + : + port + \0 */
		#define ADDR_LEN INET6_ADDRSTRLEN + 1 + 5 + 1

		static void addr2str(int af, const void addr, unsigned port, char buf)
		{
		if (inet_ntop(af, addr, buf, ADDR_LEN) == NULL) {
		*buf = '\0';
		return;
		}
		size_t len = strlen(buf);
		if (port) {
		snprintf(buf, 64, "%d.%d.%d.%d:%d",
		addr.b[0], addr.b[1], addr.b[2], addr.b[3], port);
		snprintf(buf+len, ADDR_LEN-len, ":%d", port);
		} else {
		snprintf(buf, 64, "%d.%d.%d.%d:*",
		addr.b[0], addr.b[1], addr.b[2], addr.b[3]);
		strncat(buf+len, ":*", ADDR_LEN-len-1);
		}
		}

		int netstat_main(int argc, char *argv[])
		{
		char buf[512];
		char lip[64];
		char rip[64];
		static void ipv4(const char filename, const char label) {
		FILE *fp = fopen(filename, "r");
		if (fp == NULL) {
		return;
		}
		char buf[BUFSIZ];
		fgets(buf, BUFSIZ, fp);
		while (fgets(buf, BUFSIZ, fp)){
		char lip[ADDR_LEN];
		char rip[ADDR_LEN];
		iaddr laddr, raddr;
		unsigned lport, rport, state, txq, rxq, num;
		int n;
		FILE *fp;

		printf("Proto Recv-Q Send-Q Local Address Foreign Address State\n");

		fp = fopen("/proc/net/tcp", "r");
		if(fp != 0) {
		fgets(buf, 512, fp);
		while(fgets(buf, 512, fp)){
		n = sscanf(buf, " %d: %x:%x %x:%x %x %x:%x",
		int n = sscanf(buf, " %d: %x:%x %x:%x %x %x:%x",
		&num, &laddr.u, &lport, &raddr.u, &rport,
		&state, &txq, &rxq);
		if (n == 8) {
		addr2str(laddr, lport, lip);
		addr2str(raddr, rport, rip);
		addr2str(AF_INET, &laddr, lport, lip);
		addr2str(AF_INET, &raddr, rport, rip);

		printf("tcp %6d %6d %-22s %-22s %s\n",
		txq, rxq, lip, rip,
		printf("%4s %6d %6d %-22s %-22s %s\n",
		label, txq, rxq, lip, rip,
		state2str(state));
		}
		}
		fclose(fp);
		}
		fp = fopen("/proc/net/udp", "r");
		if(fp != 0) {
		fgets(buf, 512, fp);
		while(fgets(buf, 512, fp)){
		n = sscanf(buf, " %d: %x:%x %x:%x %x %x:%x",
		&num, &laddr.u, &lport, &raddr.u, &rport,

		static void ipv6(const char filename, const char label) {
		FILE *fp = fopen(filename, "r");
		if (fp == NULL) {
		return;
		}
		char buf[BUFSIZ];
		fgets(buf, BUFSIZ, fp);
		while (fgets(buf, BUFSIZ, fp)){
		char lip[ADDR_LEN];
		char rip[ADDR_LEN];
		iaddr6 laddr6, raddr6;
		unsigned lport, rport, state, txq, rxq, num;
		int n = sscanf(buf, " %d: %8x%8x%8x%8x:%x %8x%8x%8x%8x:%x %x %x:%x",
		&num, &laddr6.u.a, &laddr6.u.b, &laddr6.u.c, &laddr6.u.d, &lport,
		&raddr6.u.a, &raddr6.u.b, &raddr6.u.c, &raddr6.u.d, &rport,
		&state, &txq, &rxq);
		if(n == 8) {
		addr2str(laddr, lport, lip);
		addr2str(raddr, rport, rip);
		if (n == 14) {
		addr2str(AF_INET6, &laddr6, lport, lip);
		addr2str(AF_INET6, &raddr6, rport, rip);

		printf("udp %6d %6d %-22s %-22s\n",
		txq, rxq, lip, rip);
		printf("%4s %6d %6d %-22s %-22s %s\n",
		label, txq, rxq, lip, rip,
		state2str(state));
		}
		}
		fclose(fp);
		}

		int netstat_main(int argc, char *argv[])
		{
		printf("Proto Recv-Q Send-Q Local Address Foreign Address State\n");
		ipv4("/proc/net/tcp", "tcp");
		ipv4("/proc/net/udp", "udp");
		ipv6("/proc/net/tcp6", "tcp6");
		ipv6("/proc/net/udp6", "udp6");
		return 0;
		}

toolbox/Android.mk

+1 −1

File changed.

Contains only whitespace changes.