static bool vsock_parse_vaddr_to_sockaddr(const VsockSocketAddress *vaddr,
struct sockaddr_vm *svm,
Error **errp)
{
unsigned long long val;
memset(svm, 0, sizeof(*svm));
svm->svm_family = AF_VSOCK;
if (parse_uint_full(vaddr->cid, &val, 10) < 0 ||
val > UINT32_MAX) {
error_setg(errp, "Failed to parse cid '%s'", vaddr->cid);
return false;
}
svm->svm_cid = val;
if (parse_uint_full(vaddr->port, &val, 10) < 0 ||
val > UINT32_MAX) {
error_setg(errp, "Failed to parse port '%s'", vaddr->port);
return false;
}
svm->svm_port = val;
return true;
}
static int inet_listen_saddr(InetSocketAddress *saddr,
int port_offset,
Error **errp)
{
struct addrinfo ai,*res,*e;
char port[33];
char uaddr[INET6_ADDRSTRLEN+1];
char uport[33];
int rc, port_min, port_max, p;
int slisten = -1;
int saved_errno = 0;
bool socket_created = false;
Error *err = NULL;
memset(&ai,0, sizeof(ai));
ai.ai_flags = AI_PASSIVE;
if (saddr->has_numeric && saddr->numeric) {
ai.ai_flags |= AI_NUMERICHOST | AI_NUMERICSERV;
}
ai.ai_family = inet_ai_family_from_address(saddr, &err);
ai.ai_socktype = SOCK_STREAM;
if (err) {
error_propagate(errp, err);
return -1;
}
if (saddr->host == NULL) {
error_setg(errp, "host not specified");
return -1;
}
if (saddr->port != NULL) {
pstrcpy(port, sizeof(port), saddr->port);
} else {
port[0] = '\0';
}
/* lookup */
if (port_offset) {
unsigned long long baseport;
if (strlen(port) == 0) {
error_setg(errp, "port not specified");
return -1;
}
if (parse_uint_full(port, &baseport, 10) < 0) {
error_setg(errp, "can't convert to a number: %s", port);
return -1;
}
if (baseport > 65535 ||
baseport + port_offset > 65535) {
error_setg(errp, "port %s out of range", port);
return -1;
}
snprintf(port, sizeof(port), "%d", (int)baseport + port_offset);
}
rc = getaddrinfo(strlen(saddr->host) ? saddr->host : NULL,
strlen(port) ? port : NULL, &ai, &res);
if (rc != 0) {
error_setg(errp, "address resolution failed for %s:%s: %s",
saddr->host, port, gai_strerror(rc));
return -1;
}
/* create socket + bind/listen */
for (e = res; e != NULL; e = e->ai_next) {
getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen,
uaddr,INET6_ADDRSTRLEN,uport,32,
NI_NUMERICHOST | NI_NUMERICSERV);
port_min = inet_getport(e);
port_max = saddr->has_to ? saddr->to + port_offset : port_min;
for (p = port_min; p <= port_max; p++) {
inet_setport(e, p);
slisten = create_fast_reuse_socket(e);
if (slisten < 0) {
/* First time we expect we might fail to create the socket
* eg if 'e' has AF_INET6 but ipv6 kmod is not loaded.
* Later iterations should always succeed if first iteration
* worked though, so treat that as fatal.
*/
if (p == port_min) {
continue;
} else {
error_setg_errno(errp, errno,
"Failed to recreate failed listening socket");
goto listen_failed;
}
}
socket_created = true;
rc = try_bind(slisten, saddr, e);
if (rc < 0) {
if (errno != EADDRINUSE) {
error_setg_errno(errp, errno, "Failed to bind socket");
goto listen_failed;
}
} else {
if (!listen(slisten, 1)) {
goto listen_ok;
}
if (errno != EADDRINUSE) {
error_setg_errno(errp, errno, "Failed to listen on socket");
goto listen_failed;
}
}
/* Someone else managed to bind to the same port and beat us
* to listen on it! Socket semantics does not allow us to
* recover from this situation, so we need to recreate the
* socket to allow bind attempts for subsequent ports:
*/
closesocket(slisten);
slisten = -1;
}
}
error_setg_errno(errp, errno,
socket_created ?
"Failed to find an available port" :
"Failed to create a socket");
listen_failed:
saved_errno = errno;
if (slisten >= 0) {
closesocket(slisten);
}
freeaddrinfo(res);
errno = saved_errno;
return -1;
listen_ok:
freeaddrinfo(res);
return slisten;
}
int inet_listen_opts(QemuOpts *opts, int port_offset, Error **errp)
{
struct addrinfo ai,*res,*e;
const char *addr;
char port[33];
char uaddr[INET6_ADDRSTRLEN+1];
char uport[33];
int slisten, rc, to, port_min, port_max, p;
memset(&ai,0, sizeof(ai));
ai.ai_flags = AI_PASSIVE | AI_ADDRCONFIG;
ai.ai_family = PF_UNSPEC;
ai.ai_socktype = SOCK_STREAM;
if ((qemu_opt_get(opts, "host") == NULL) ||
(qemu_opt_get(opts, "port") == NULL)) {
error_setg(errp, "host and/or port not specified");
return -1;
}
pstrcpy(port, sizeof(port), qemu_opt_get(opts, "port"));
addr = qemu_opt_get(opts, "host");
to = qemu_opt_get_number(opts, "to", 0);
if (qemu_opt_get_bool(opts, "ipv4", 0))
ai.ai_family = PF_INET;
if (qemu_opt_get_bool(opts, "ipv6", 0))
ai.ai_family = PF_INET6;
/* lookup */
if (port_offset) {
unsigned long long baseport;
if (parse_uint_full(port, &baseport, 10) < 0) {
error_setg(errp, "can't convert to a number: %s", port);
return -1;
}
if (baseport > 65535 ||
baseport + port_offset > 65535) {
error_setg(errp, "port %s out of range", port);
return -1;
}
snprintf(port, sizeof(port), "%d", (int)baseport + port_offset);
}
rc = getaddrinfo(strlen(addr) ? addr : NULL, port, &ai, &res);
if (rc != 0) {
error_setg(errp, "address resolution failed for %s:%s: %s", addr, port,
gai_strerror(rc));
return -1;
}
/* create socket + bind */
for (e = res; e != NULL; e = e->ai_next) {
getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen,
uaddr,INET6_ADDRSTRLEN,uport,32,
NI_NUMERICHOST | NI_NUMERICSERV);
slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol);
if (slisten < 0) {
if (!e->ai_next) {
error_setg_errno(errp, errno, "Failed to create socket");
}
continue;
}
socket_set_fast_reuse(slisten);
#ifdef IPV6_V6ONLY
if (e->ai_family == PF_INET6) {
/* listen on both ipv4 and ipv6 */
const int off = 0;
qemu_setsockopt(slisten, IPPROTO_IPV6, IPV6_V6ONLY, &off,
sizeof(off));
}
#endif
port_min = inet_getport(e);
port_max = to ? to + port_offset : port_min;
for (p = port_min; p <= port_max; p++) {
inet_setport(e, p);
if (bind(slisten, e->ai_addr, e->ai_addrlen) == 0) {
goto listen;
}
if (p == port_max) {
if (!e->ai_next) {
error_setg_errno(errp, errno, "Failed to bind socket");
}
}
}
closesocket(slisten);
}
freeaddrinfo(res);
return -1;
listen:
if (listen(slisten,1) != 0) {
error_setg_errno(errp, errno, "Failed to listen on socket");
closesocket(slisten);
freeaddrinfo(res);
return -1;
}
qemu_opt_set(opts, "host", uaddr, &error_abort);
qemu_opt_set_number(opts, "port", inet_getport(e) - port_offset,
&error_abort);
qemu_opt_set_bool(opts, "ipv6", e->ai_family == PF_INET6,
&error_abort);
qemu_opt_set_bool(opts, "ipv4", e->ai_family != PF_INET6,
&error_abort);
freeaddrinfo(res);
return slisten;
}
static int inet_listen_saddr(InetSocketAddress *saddr,
int port_offset,
bool update_addr,
Error **errp)
{
struct addrinfo ai,*res,*e;
char port[33];
char uaddr[INET6_ADDRSTRLEN+1];
char uport[33];
int slisten, rc, port_min, port_max, p;
Error *err = NULL;
memset(&ai,0, sizeof(ai));
ai.ai_flags = AI_PASSIVE;
if (saddr->has_numeric && saddr->numeric) {
ai.ai_flags |= AI_NUMERICHOST | AI_NUMERICSERV;
}
ai.ai_family = inet_ai_family_from_address(saddr, &err);
ai.ai_socktype = SOCK_STREAM;
if (err) {
error_propagate(errp, err);
return -1;
}
if (saddr->host == NULL) {
error_setg(errp, "host not specified");
return -1;
}
if (saddr->port != NULL) {
pstrcpy(port, sizeof(port), saddr->port);
} else {
port[0] = '\0';
}
/* lookup */
if (port_offset) {
unsigned long long baseport;
if (strlen(port) == 0) {
error_setg(errp, "port not specified");
return -1;
}
if (parse_uint_full(port, &baseport, 10) < 0) {
error_setg(errp, "can't convert to a number: %s", port);
return -1;
}
if (baseport > 65535 ||
baseport + port_offset > 65535) {
error_setg(errp, "port %s out of range", port);
return -1;
}
snprintf(port, sizeof(port), "%d", (int)baseport + port_offset);
}
rc = getaddrinfo(strlen(saddr->host) ? saddr->host : NULL,
strlen(port) ? port : NULL, &ai, &res);
if (rc != 0) {
error_setg(errp, "address resolution failed for %s:%s: %s",
saddr->host, port, gai_strerror(rc));
return -1;
}
/* create socket + bind */
for (e = res; e != NULL; e = e->ai_next) {
getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen,
uaddr,INET6_ADDRSTRLEN,uport,32,
NI_NUMERICHOST | NI_NUMERICSERV);
slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol);
if (slisten < 0) {
if (!e->ai_next) {
error_setg_errno(errp, errno, "Failed to create socket");
}
continue;
}
socket_set_fast_reuse(slisten);
#ifdef IPV6_V6ONLY
if (e->ai_family == PF_INET6) {
/* listen on both ipv4 and ipv6 */
const int off = 0;
qemu_setsockopt(slisten, IPPROTO_IPV6, IPV6_V6ONLY, &off,
sizeof(off));
}
#endif
port_min = inet_getport(e);
port_max = saddr->has_to ? saddr->to + port_offset : port_min;
for (p = port_min; p <= port_max; p++) {
inet_setport(e, p);
if (bind(slisten, e->ai_addr, e->ai_addrlen) == 0) {
goto listen;
}
if (p == port_max) {
if (!e->ai_next) {
error_setg_errno(errp, errno, "Failed to bind socket");
}
}
}
closesocket(slisten);
}
freeaddrinfo(res);
return -1;
listen:
if (listen(slisten,1) != 0) {
error_setg_errno(errp, errno, "Failed to listen on socket");
closesocket(slisten);
freeaddrinfo(res);
return -1;
}
if (update_addr) {
g_free(saddr->host);
saddr->host = g_strdup(uaddr);
g_free(saddr->port);
saddr->port = g_strdup_printf("%d",
inet_getport(e) - port_offset);
saddr->has_ipv6 = saddr->ipv6 = e->ai_family == PF_INET6;
saddr->has_ipv4 = saddr->ipv4 = e->ai_family != PF_INET6;
}
freeaddrinfo(res);
return slisten;
}
static int nfs_parse_uri(const char *filename, QDict *options, Error **errp)
{
URI *uri = NULL;
QueryParams *qp = NULL;
int ret = -EINVAL, i;
uri = uri_parse(filename);
if (!uri) {
error_setg(errp, "Invalid URI specified");
goto out;
}
if (strcmp(uri->scheme, "nfs") != 0) {
error_setg(errp, "URI scheme must be 'nfs'");
goto out;
}
if (!uri->server) {
error_setg(errp, "missing hostname in URI");
goto out;
}
if (!uri->path) {
error_setg(errp, "missing file path in URI");
goto out;
}
qp = query_params_parse(uri->query);
if (!qp) {
error_setg(errp, "could not parse query parameters");
goto out;
}
qdict_put(options, "server.host", qstring_from_str(uri->server));
qdict_put(options, "server.type", qstring_from_str("inet"));
qdict_put(options, "path", qstring_from_str(uri->path));
for (i = 0; i < qp->n; i++) {
unsigned long long val;
if (!qp->p[i].value) {
error_setg(errp, "Value for NFS parameter expected: %s",
qp->p[i].name);
goto out;
}
if (parse_uint_full(qp->p[i].value, &val, 0)) {
error_setg(errp, "Illegal value for NFS parameter: %s",
qp->p[i].name);
goto out;
}
if (!strcmp(qp->p[i].name, "uid")) {
qdict_put(options, "user",
qstring_from_str(qp->p[i].value));
} else if (!strcmp(qp->p[i].name, "gid")) {
qdict_put(options, "group",
qstring_from_str(qp->p[i].value));
} else if (!strcmp(qp->p[i].name, "tcp-syncnt")) {
qdict_put(options, "tcp-syn-count",
qstring_from_str(qp->p[i].value));
} else if (!strcmp(qp->p[i].name, "readahead")) {
qdict_put(options, "readahead-size",
qstring_from_str(qp->p[i].value));
} else if (!strcmp(qp->p[i].name, "pagecache")) {
qdict_put(options, "page-cache-size",
qstring_from_str(qp->p[i].value));
} else if (!strcmp(qp->p[i].name, "debug")) {
qdict_put(options, "debug",
qstring_from_str(qp->p[i].value));
} else {
error_setg(errp, "Unknown NFS parameter name: %s",
qp->p[i].name);
goto out;
}
}
ret = 0;
out:
if (qp) {
query_params_free(qp);
}
if (uri) {
uri_free(uri);
}
return ret;
}
