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ss: create a function to print info about netlink sockets 

It will be reused for printing info about netlink sockets, when
socket diag is used for retrieving information.

Cc: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Andrey Vagin <avagin@openvz.org>
This commit is contained in:
Andrey Vagin 2013-06-05 12:41:59 +04:00 committed by Stephen Hemminger
parent d8402b9641
commit 129709aea1
1 changed files with 72 additions and 58 deletions
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130
misc/ss.c
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@ -2672,6 +2672,73 @@ static int packet_show(struct filter *f)
return 0; return 0;
} }
static void netlink_show_one(struct filter *f,
int prot, int pid, unsigned groups,
int rq, int wq,
unsigned long long sk, unsigned long long cb)
{
if (f->f) {
struct tcpstat tst;
tst.local.family = AF_NETLINK;
tst.remote.family = AF_NETLINK;
tst.rport = -1;
tst.lport = pid;
tst.local.data[0] = prot;
tst.remote.data[0] = 0;
if (run_ssfilter(f->f, &tst) == 0)
return;
}
if (netid_width)
printf("%-*s ", netid_width, "nl");
if (state_width)
printf("%-*s ", state_width, "UNCONN");
printf("%-6d %-6d ", rq, wq);
if (resolve_services && prot == 0)
printf("%*s:", addr_width, "rtnl");
else if (resolve_services && prot == 3)
printf("%*s:", addr_width, "fw");
else if (resolve_services && prot == 4)
printf("%*s:", addr_width, "tcpdiag");
else
printf("%*d:", addr_width, prot);
if (pid == -1) {
printf("%-*s ", serv_width, "*");
} else if (resolve_services) {
int done = 0;
if (!pid) {
done = 1;
printf("%-*s ", serv_width, "kernel");
} else if (pid > 0) {
char procname[64];
FILE *fp;
sprintf(procname, "%s/%d/stat",
getenv("PROC_ROOT") ? : "/proc", pid);
if ((fp = fopen(procname, "r")) != NULL) {
if (fscanf(fp, "%*d (%[^)])", procname) == 1) {
sprintf(procname+strlen(procname), "/%d", pid);
printf("%-*s ", serv_width, procname);
done = 1;
}
fclose(fp);
}
}
if (!done)
printf("%-*d ", serv_width, pid);
} else {
printf("%-*d ", serv_width, pid);
}
printf("%*s*%-*s",
addr_width, "", serv_width, "");
if (show_details) {
printf(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups);
}
printf("\n");
return;
}
static int netlink_show(struct filter *f) static int netlink_show(struct filter *f)
{ {
FILE *fp; FILE *fp;
@ -2684,6 +2751,10 @@ static int netlink_show(struct filter *f)
if (!(f->states & (1<<SS_CLOSE))) if (!(f->states & (1<<SS_CLOSE)))
return 0; return 0;
if (!getenv("PROC_NET_NETLINK") && !getenv("PROC_ROOT") &&
netlink_show_netlink(f, NULL) == 0)
return 0;
if ((fp = net_netlink_open()) == NULL) if ((fp = net_netlink_open()) == NULL)
return -1; return -1;
fgets(buf, sizeof(buf)-1, fp); fgets(buf, sizeof(buf)-1, fp);
@ -2693,64 +2764,7 @@ static int netlink_show(struct filter *f)
&sk, &sk,
&prot, &pid, &groups, &rq, &wq, &cb, &rc); &prot, &pid, &groups, &rq, &wq, &cb, &rc);
if (f->f) { netlink_show_one(f, prot, pid, groups, rq, wq, sk, cb);
struct tcpstat tst;
tst.local.family = AF_NETLINK;
tst.remote.family = AF_NETLINK;
tst.rport = -1;
tst.lport = pid;
tst.local.data[0] = prot;
tst.remote.data[0] = 0;
if (run_ssfilter(f->f, &tst) == 0)
continue;
}
if (netid_width)
printf("%-*s ", netid_width, "nl");
if (state_width)
printf("%-*s ", state_width, "UNCONN");
printf("%-6d %-6d ", rq, wq);
if (resolve_services && prot == 0)
printf("%*s:", addr_width, "rtnl");
else if (resolve_services && prot == 3)
printf("%*s:", addr_width, "fw");
else if (resolve_services && prot == 4)
printf("%*s:", addr_width, "tcpdiag");
else
printf("%*d:", addr_width, prot);
if (pid == -1) {
printf("%-*s ", serv_width, "*");
} else if (resolve_services) {
int done = 0;
if (!pid) {
done = 1;
printf("%-*s ", serv_width, "kernel");
} else if (pid > 0) {
char procname[64];
FILE *fp;
sprintf(procname, "%s/%d/stat",
getenv("PROC_ROOT") ? : "/proc", pid);
if ((fp = fopen(procname, "r")) != NULL) {
if (fscanf(fp, "%*d (%[^)])", procname) == 1) {
sprintf(procname+strlen(procname), "/%d", pid);
printf("%-*s ", serv_width, procname);
done = 1;
}
fclose(fp);
}
}
if (!done)
printf("%-*d ", serv_width, pid);
} else {
printf("%-*d ", serv_width, pid);
}
printf("%*s*%-*s",
addr_width, "", serv_width, "");
if (show_details) {
printf(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups);
}
printf("\n");
} }
return 0; return 0;