On Mon, 2 Mar 2015 04:48:13 -0500, Mike Frysinger <vap...@gentoo.org> wrote:
> --- a/socketutils.c
> +++ b/socketutils.c
> @@ -64,7 +64,7 @@ inet_parse_response(const char *proto_name, const void
> *data, int data_len,
> const unsigned long inode)
> {
> const struct inet_diag_msg *diag_msg = data;
> - static const char zero_addr[sizeof(struct in6_addr)];
> + static const char zero_addr[sizeof(struct in6_addr) + 20];
> socklen_t addr_size, text_size;
>
> if (diag_msg->idiag_inode != inode)
Thank you. but I just wonder why this has effects on the result.
Could you try the patch and run tests on alpha?
The patch generates /tmp/strace-yy-debug, which helps us to debug.
The patch dumps diag_msg like:
TCP:[127.0.0.1:53834->127.0.0.1:57272]
0000: 02 01 00 00 d2 4a df b8 | 7f 00 00 01 00 00 00 00
0010: 00 00 00 00 00 00 00 00 | 7f 00 00 01 00 00 00 00
0020: 00 00 00 00 00 00 00 00 | 00 00 00 00 00 9d a7 18
0030: 02 88 ff ff 00 00 00 00 | 00 00 00 00 00 00 00 00
0040: e8 03 00 00 4e fe 02 00 |
TCP:[127.0.0.1:53834->127.0.0.1:57272]
0000: 02 01 00 00 d2 4a df b8 | 7f 00 00 01 00 00 00 00
0010: 00 00 00 00 00 00 00 00 | 7f 00 00 01 00 00 00 00
0020: 00 00 00 00 00 00 00 00 | 00 00 00 00 00 9d a7 18
0030: 02 88 ff ff 00 00 00 00 | 00 00 00 00 00 00 00 00
0040: e8 03 00 00 4e fe 02 00 |
If ss command, which is part of iproute2, is available on the alpha system,
% ss -n -t -p
State Recv-Q Send-Q Local Address:Port Peer
Address:Port
ESTAB 0 0 10.64.244.96:49945
10.64.255.1:631 users:(("gnome-settings-",pid=4724,fd=21))
ESTAB 0 0 192.168.11.12:42019
96.43.148.82:443 users:(("firefox",pid=6415,fd=40))
CLOSE-WAIT 1 0 192.168.11.12:58661
152.19.134.142:443
Older ss just opens /proc/net/tcp and read it.
Newer ss uses netlink socket to get tcp socket informaton as strace -yy does.
You can detect newer or older with "/usr/bin/strace -e open ss -t".
Older implentation may open /proc/net/tcp. Newer one may not.
Regards,
Masatake YAMATO
diff --git a/socketutils.c b/socketutils.c
index 2de59cd..8d6d563 100644
--- a/socketutils.c
+++ b/socketutils.c
@@ -8,6 +8,8 @@
#include <linux/unix_diag.h>
#include <linux/rtnetlink.h>
+#include <stdio.h>
+
#if !defined NETLINK_SOCK_DIAG && defined NETLINK_INET_DIAG
# define NETLINK_SOCK_DIAG NETLINK_INET_DIAG
#endif
@@ -97,6 +99,35 @@ inet_parse_response(const char *proto_name, const void *data, int data_len,
dst_buf, text_size))
return false;
+ {
+ static FILE *fp;
+ unsigned int i;
+ unsigned char *b;
+
+ if (!fp)
+ {
+ fp = fopen("/tmp/strace-yy-debug","a");
+ if(!fp)
+ {
+ perror("fopen for -yy debug");
+ exit(1);
+ }
+ }
+
+ fprintf(fp, "%s:[%s:%u->%s:%u]",
+ proto_name,
+ src_buf, ntohs(diag_msg->id.idiag_sport),
+ dst_buf, ntohs(diag_msg->id.idiag_dport));
+ b = (unsigned char *)diag_msg;
+ for (i = 0; i < sizeof (struct inet_diag_msg); i++)
+ {
+ if ((i % 16) == 0)
+ fprintf(fp, "\n%04x: ", i);
+ fprintf(fp, "%02x%s", b[i], ((i % 16) == 7)? " | ": " ");
+ }
+ fputc('\n', fp);
+ fflush (fp);
+ }
tprintf("%s:[%s:%u->%s:%u]",
proto_name,
src_buf, ntohs(diag_msg->id.idiag_sport),
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