Exemple #1
0
/*
 * file=gluster[+transport]://[server[:port]]/volname/image[?socket=...]
 *
 * 'gluster' is the protocol.
 *
 * 'transport' specifies the transport type used to connect to gluster
 * management daemon (glusterd). Valid transport types are
 * tcp, unix and rdma. If a transport type isn't specified, then tcp
 * type is assumed.
 *
 * 'server' specifies the server where the volume file specification for
 * the given volume resides. This can be either hostname, ipv4 address
 * or ipv6 address. ipv6 address needs to be within square brackets [ ].
 * If transport type is 'unix', then 'server' field should not be specifed.
 * The 'socket' field needs to be populated with the path to unix domain
 * socket.
 *
 * 'port' is the port number on which glusterd is listening. This is optional
 * and if not specified, QEMU will send 0 which will make gluster to use the
 * default port. If the transport type is unix, then 'port' should not be
 * specified.
 *
 * 'volname' is the name of the gluster volume which contains the VM image.
 *
 * 'image' is the path to the actual VM image that resides on gluster volume.
 *
 * Examples:
 *
 * file=gluster://1.2.3.4/testvol/a.img
 * file=gluster+tcp://1.2.3.4/testvol/a.img
 * file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img
 * file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img
 * file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img
 * file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img
 * file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket
 * file=gluster+rdma://1.2.3.4:24007/testvol/a.img
 */
static int qemu_gluster_parseuri(GlusterConf *gconf, const char *filename)
{
    URI *uri;
    QueryParams *qp = NULL;
    bool is_unix = false;
    int ret = 0;

    uri = uri_parse(filename);
    if (!uri) {
        return -EINVAL;
    }

    /* transport */
    if (!strcmp(uri->scheme, "gluster")) {
        gconf->transport = g_strdup("tcp");
    } else if (!strcmp(uri->scheme, "gluster+tcp")) {
        gconf->transport = g_strdup("tcp");
    } else if (!strcmp(uri->scheme, "gluster+unix")) {
        gconf->transport = g_strdup("unix");
        is_unix = true;
    } else if (!strcmp(uri->scheme, "gluster+rdma")) {
        gconf->transport = g_strdup("rdma");
    } else {
        ret = -EINVAL;
        goto out;
    }

    ret = parse_volume_options(gconf, uri->path);
    if (ret < 0) {
        goto out;
    }

    qp = query_params_parse(uri->query);
    if (qp->n > 1 || (is_unix && !qp->n) || (!is_unix && qp->n)) {
        ret = -EINVAL;
        goto out;
    }

    if (is_unix) {
        if (uri->server || uri->port) {
            ret = -EINVAL;
            goto out;
        }
        if (strcmp(qp->p[0].name, "socket")) {
            ret = -EINVAL;
            goto out;
        }
        gconf->server = g_strdup(qp->p[0].value);
    } else {
        gconf->server = g_strdup(uri->server);
        gconf->port = uri->port;
    }

out:
    if (qp) {
        query_params_free(qp);
    }
    uri_free(uri);
    return ret;
}
Exemple #2
0
static int parse_uri(const char *filename, QDict *options, Error **errp)
{
    URI *uri = NULL;
    QueryParams *qp = NULL;
    int i;

    uri = uri_parse(filename);
    if (!uri) {
        return -EINVAL;
    }

    if (strcmp(uri->scheme, "ssh") != 0) {
        error_setg(errp, "URI scheme must be 'ssh'");
        goto err;
    }

    if (!uri->server || strcmp(uri->server, "") == 0) {
        error_setg(errp, "missing hostname in URI");
        goto err;
    }

    if (!uri->path || strcmp(uri->path, "") == 0) {
        error_setg(errp, "missing remote path in URI");
        goto err;
    }

    qp = query_params_parse(uri->query);
    if (!qp) {
        error_setg(errp, "could not parse query parameters");
        goto err;
    }

    if(uri->user && strcmp(uri->user, "") != 0) {
        qdict_put(options, "user", qstring_from_str(uri->user));
    }

    qdict_put(options, "host", qstring_from_str(uri->server));

    if (uri->port) {
        qdict_put(options, "port", qint_from_int(uri->port));
    }

    qdict_put(options, "path", qstring_from_str(uri->path));

    /* Pick out any query parameters that we understand, and ignore
     * the rest.
     */
    for (i = 0; i < qp->n; ++i) {
        if (strcmp(qp->p[i].name, "host_key_check") == 0) {
            qdict_put(options, "host_key_check",
                      qstring_from_str(qp->p[i].value));
        }
    }

    query_params_free(qp);
    uri_free(uri);
    return 0;

 err:
    if (qp) {
      query_params_free(qp);
    }
    if (uri) {
      uri_free(uri);
    }
    return -EINVAL;
}
Exemple #3
0
static int nbd_parse_uri(const char *filename, QDict *options)
{
    URI *uri;
    const char *p;
    QueryParams *qp = NULL;
    int ret = 0;
    bool is_unix;

    uri = uri_parse(filename);
    if (!uri) {
        return -EINVAL;
    }

    /* transport */
    if (!strcmp(uri->scheme, "nbd")) {
        is_unix = false;
    } else if (!strcmp(uri->scheme, "nbd+tcp")) {
        is_unix = false;
    } else if (!strcmp(uri->scheme, "nbd+unix")) {
        is_unix = true;
    } else {
        ret = -EINVAL;
        goto out;
    }

    p = uri->path ? uri->path : "/";
    p += strspn(p, "/");
    if (p[0]) {
        qdict_put(options, "export", qstring_from_str(p));
    }

    qp = query_params_parse(uri->query);
    if (qp->n > 1 || (is_unix && !qp->n) || (!is_unix && qp->n)) {
        ret = -EINVAL;
        goto out;
    }

    if (is_unix) {
        /* nbd+unix:///export?socket=path */
        if (uri->server || uri->port || strcmp(qp->p[0].name, "socket")) {
            ret = -EINVAL;
            goto out;
        }
        qdict_put(options, "path", qstring_from_str(qp->p[0].value));
    } else {
        QString *host;
        /* nbd[+tcp]://host[:port]/export */
        if (!uri->server) {
            ret = -EINVAL;
            goto out;
        }

        /* strip braces from literal IPv6 address */
        if (uri->server[0] == '[') {
            host = qstring_from_substr(uri->server, 1,
                                       strlen(uri->server) - 2);
        } else {
            host = qstring_from_str(uri->server);
        }

        qdict_put(options, "host", host);
        if (uri->port) {
            char* port_str = g_strdup_printf("%d", uri->port);
            qdict_put(options, "port", qstring_from_str(port_str));
            g_free(port_str);
        }
    }

out:
    if (qp) {
        query_params_free(qp);
    }
    uri_free(uri);
    return ret;
}
Exemple #4
0
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;
}