size_t
_dispatch_object_debug_attr(dispatch_object_t dou, char* buf, size_t bufsiz)
{
return dsnprintf(buf, bufsiz, "xrefcnt = 0x%x, refcnt = 0x%x, "
"suspend_cnt = 0x%x, locked = %d, ", dou._do->do_xref_cnt + 1,
dou._do->do_ref_cnt + 1,
dou._do->do_suspend_cnt / DISPATCH_OBJECT_SUSPEND_INTERVAL,
dou._do->do_suspend_cnt & 1);
}
/* Put 'fname\0sname\0' into buf and return pointer to sname
* Put '\0hexval\0' into buf and return pointer to hexval if
* sym cannot be resolved
*/
unsigned char *
dbug_resolve_symbol(void *sym,
unsigned char *buf,
unsigned char *blim)
{
Dl_info info;
const char *name;
if (dladdr(sym, &info) == 0) {
*buf++ = '\0'; /* no filename */
dsnprintf(buf, blim - buf, "%p", sym);
return buf;
}
name = info.dli_fname;
name = path_name((unsigned char *)name, (unsigned char *)name + 255, '/');
buf += str_copy(name, name + 255, buf, blim, -1) + 1;
name = info.dli_sname;
str_copy(name, name + 255, buf, blim, -1);
return buf;
}
static int
vr_resolve_inet(sds name, int port, struct sockinfo *si)
{
int status;
struct addrinfo *ai, *cai; /* head and current addrinfo */
struct addrinfo hints;
char *node, service[VR_UINTMAX_MAXLEN];
bool found;
ASSERT(vr_valid_port(port));
memset(&hints, 0, sizeof(hints));
hints.ai_flags = AI_NUMERICSERV;
hints.ai_family = AF_UNSPEC; /* AF_INET or AF_INET6 */
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = 0;
hints.ai_addrlen = 0;
hints.ai_addr = NULL;
hints.ai_canonname = NULL;
if (name != NULL) {
node = (char *)name;
} else {
/*
* If AI_PASSIVE flag is specified in hints.ai_flags, and node is
* NULL, then the returned socket addresses will be suitable for
* bind(2)ing a socket that will accept(2) connections. The returned
* socket address will contain the wildcard IP address.
*/
node = NULL;
hints.ai_flags |= AI_PASSIVE;
}
dsnprintf(service, VR_UINTMAX_MAXLEN, "%d", port);
/*
* getaddrinfo() returns zero on success or one of the error codes listed
* in gai_strerror(3) if an error occurs
*/
status = getaddrinfo(node, service, &hints, &ai);
if (status != 0) {
log_error("address resolution of node '%s' service '%s' failed: %s",
node, service, gai_strerror(status));
return -1;
}
/*
* getaddrinfo() can return a linked list of more than one addrinfo,
* since we requested for both AF_INET and AF_INET6 addresses and the
* host itself can be multi-homed. Since we don't care whether we are
* using ipv4 or ipv6, we just use the first address from this collection
* in the order in which it was returned.
*
* The sorting function used within getaddrinfo() is defined in RFC 3484;
* the order can be tweaked for a particular system by editing
* /etc/gai.conf
*/
for (cai = ai, found = false; cai != NULL; cai = cai->ai_next) {
si->family = cai->ai_family;
si->addrlen = cai->ai_addrlen;
vr_memcpy(&si->addr, cai->ai_addr, si->addrlen);
found = true;
break;
}
freeaddrinfo(ai);
return !found ? -1 : 0;
}
