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qemu-char: Print the remote and local addresses for a socket 

It seems that it might be a good idea to know what is at the remote
end of a socket for tracking down issues.  So add that to the
socket filename.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Corey Minyard 2014-10-02 11:17:38 -05:00 committed by Paolo Bonzini
parent 5dd1f02b4b
commit 01ca519f24
1 changed files with 18 additions and 9 deletions
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27
qemu-char.c
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@ -142,9 +142,11 @@ static int SocketAddress_to_str(char *dest, int max_len,
static int sockaddr_to_str(char *dest, int max_len, static int sockaddr_to_str(char *dest, int max_len,
struct sockaddr_storage *ss, socklen_t ss_len, struct sockaddr_storage *ss, socklen_t ss_len,
struct sockaddr_storage *ps, socklen_t ps_len,
bool is_listen, bool is_telnet) bool is_listen, bool is_telnet)
{ {
char host[NI_MAXHOST], serv[NI_MAXSERV]; char shost[NI_MAXHOST], sserv[NI_MAXSERV];
char phost[NI_MAXHOST], pserv[NI_MAXSERV];
const char *left = "", *right = ""; const char *left = "", *right = "";
switch (ss->ss_family) { switch (ss->ss_family) {
@ -159,12 +161,15 @@ static int sockaddr_to_str(char *dest, int max_len,
right = "]"; right = "]";
/* fall through */ /* fall through */
case AF_INET: case AF_INET:
getnameinfo((struct sockaddr *) ss, ss_len, host, sizeof(host), getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV); sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
return snprintf(dest, max_len, "%s:%s%s%s:%s%s", getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
return snprintf(dest, max_len, "%s:%s%s%s:%s%s <-> %s%s%s:%s",
is_telnet ? "telnet" : "tcp", is_telnet ? "telnet" : "tcp",
left, host, right, serv, left, shost, right, sserv,
is_listen ? ",server" : ""); is_listen ? ",server" : "",
left, phost, right, pserv);
default: default:
return snprintf(dest, max_len, "unknown"); return snprintf(dest, max_len, "unknown");
@ -2870,15 +2875,19 @@ static void tcp_chr_connect(void *opaque)
{ {
CharDriverState *chr = opaque; CharDriverState *chr = opaque;
TCPCharDriver *s = chr->opaque; TCPCharDriver *s = chr->opaque;
struct sockaddr_storage ss; struct sockaddr_storage ss, ps;
socklen_t ss_len = sizeof(ss); socklen_t ss_len = sizeof(ss), ps_len = sizeof(ps);
memset(&ss, 0, ss_len); memset(&ss, 0, ss_len);
if (getsockname(s->fd, (struct sockaddr *) &ss, &ss_len) != 0) { if (getsockname(s->fd, (struct sockaddr *) &ss, &ss_len) != 0) {
snprintf(chr->filename, CHR_MAX_FILENAME_SIZE, snprintf(chr->filename, CHR_MAX_FILENAME_SIZE,
"Error in getsockname: %s\n", strerror(errno)); "Error in getsockname: %s\n", strerror(errno));
} else if (getpeername(s->fd, (struct sockaddr *) &ps, &ps_len) != 0) {
snprintf(chr->filename, CHR_MAX_FILENAME_SIZE,
"Error in getpeername: %s\n", strerror(errno));
} else { } else {
sockaddr_to_str(chr->filename, CHR_MAX_FILENAME_SIZE, &ss, ss_len, sockaddr_to_str(chr->filename, CHR_MAX_FILENAME_SIZE,
&ss, ss_len, &ps, ps_len,
s->is_listen, s->is_telnet); s->is_listen, s->is_telnet);
} }