+struct cluster {
+ struct config_group group;
+ unsigned int cl_tcp_port;
+ unsigned int cl_buffer_size;
+ unsigned int cl_rsbtbl_size;
+ unsigned int cl_lkbtbl_size;
+ unsigned int cl_dirtbl_size;
+ unsigned int cl_recover_timer;
+ unsigned int cl_toss_secs;
+ unsigned int cl_scan_secs;
+ unsigned int cl_log_debug;
+ unsigned int cl_protocol;
+};
+
+enum {
+ CLUSTER_ATTR_TCP_PORT = 0,
+ CLUSTER_ATTR_BUFFER_SIZE,
+ CLUSTER_ATTR_RSBTBL_SIZE,
+ CLUSTER_ATTR_LKBTBL_SIZE,
+ CLUSTER_ATTR_DIRTBL_SIZE,
+ CLUSTER_ATTR_RECOVER_TIMER,
+ CLUSTER_ATTR_TOSS_SECS,
+ CLUSTER_ATTR_SCAN_SECS,
+ CLUSTER_ATTR_LOG_DEBUG,
+ CLUSTER_ATTR_PROTOCOL,
+};
+
+struct cluster_attribute {
+ struct configfs_attribute attr;
+ ssize_t (*show)(struct cluster *, char *);
+ ssize_t (*store)(struct cluster *, const char *, size_t);
+};
+
+static ssize_t cluster_set(struct cluster *cl, unsigned int *cl_field,
+ unsigned int *info_field, int check_zero,
+ const char *buf, size_t len)
+{
+ unsigned int x;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EACCES;
+
+ x = simple_strtoul(buf, NULL, 0);
+
+ if (check_zero && !x)
+ return -EINVAL;
+
+ *cl_field = x;
+ *info_field = x;
+
+ return len;
+}
+
+#define __CONFIGFS_ATTR(_name,_mode,_read,_write) { \
+ .attr = { .ca_name = __stringify(_name), \
+ .ca_mode = _mode, \
+ .ca_owner = THIS_MODULE }, \
+ .show = _read, \
+ .store = _write, \
+}
+
+#define CLUSTER_ATTR(name, check_zero) \
+static ssize_t name##_write(struct cluster *cl, const char *buf, size_t len) \
+{ \
+ return cluster_set(cl, &cl->cl_##name, &dlm_config.ci_##name, \
+ check_zero, buf, len); \
+} \
+static ssize_t name##_read(struct cluster *cl, char *buf) \
+{ \
+ return snprintf(buf, PAGE_SIZE, "%u\n", cl->cl_##name); \
+} \
+static struct cluster_attribute cluster_attr_##name = \
+__CONFIGFS_ATTR(name, 0644, name##_read, name##_write)
+
+CLUSTER_ATTR(tcp_port, 1);
+CLUSTER_ATTR(buffer_size, 1);
+CLUSTER_ATTR(rsbtbl_size, 1);
+CLUSTER_ATTR(lkbtbl_size, 1);
+CLUSTER_ATTR(dirtbl_size, 1);
+CLUSTER_ATTR(recover_timer, 1);
+CLUSTER_ATTR(toss_secs, 1);
+CLUSTER_ATTR(scan_secs, 1);
+CLUSTER_ATTR(log_debug, 0);
+CLUSTER_ATTR(protocol, 0);
+
+static struct configfs_attribute *cluster_attrs[] = {
+ [CLUSTER_ATTR_TCP_PORT] = &cluster_attr_tcp_port.attr,
+ [CLUSTER_ATTR_BUFFER_SIZE] = &cluster_attr_buffer_size.attr,
+ [CLUSTER_ATTR_RSBTBL_SIZE] = &cluster_attr_rsbtbl_size.attr,
+ [CLUSTER_ATTR_LKBTBL_SIZE] = &cluster_attr_lkbtbl_size.attr,
+ [CLUSTER_ATTR_DIRTBL_SIZE] = &cluster_attr_dirtbl_size.attr,
+ [CLUSTER_ATTR_RECOVER_TIMER] = &cluster_attr_recover_timer.attr,
+ [CLUSTER_ATTR_TOSS_SECS] = &cluster_attr_toss_secs.attr,
+ [CLUSTER_ATTR_SCAN_SECS] = &cluster_attr_scan_secs.attr,
+ [CLUSTER_ATTR_LOG_DEBUG] = &cluster_attr_log_debug.attr,
+ [CLUSTER_ATTR_PROTOCOL] = &cluster_attr_protocol.attr,
+ NULL,
+};
+