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提交 9ae0f367 编写于 作者: C Christoph Hellwig 提交者： Nicholas Bellinger
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dlm: use per-attribute show and store methods 

To simplify the configfs interface and remove boilerplate code that also
causes binary bloat.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: David Teigland <teigland@redhat.com
Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
上级 0b4be4fa
隐藏空白更改
内联 并排
Showing with 74 addition and 214 deletion
fs/dlm/config.c
浏览文件 @ 9ae0f367
......@@ -61,35 +61,8 @@ static struct config_item *make_node(struct config_group *, const char *);
static void drop_node(struct config_group *, struct config_item *);
static void release_node(struct config_item *);
static ssize_t show_cluster(struct config_item *i, struct configfs_attribute *a,
char *buf);
static ssize_t store_cluster(struct config_item *i,
struct configfs_attribute *a,
const char *buf, size_t len);
static ssize_t show_comm(struct config_item *i, struct configfs_attribute *a,
char *buf);
static ssize_t store_comm(struct config_item *i, struct configfs_attribute *a,
const char *buf, size_t len);
static ssize_t show_node(struct config_item *i, struct configfs_attribute *a,
char *buf);
static ssize_t store_node(struct config_item *i, struct configfs_attribute *a,
const char *buf, size_t len);
static ssize_t comm_nodeid_read(struct dlm_comm *cm, char *buf);
static ssize_t comm_nodeid_write(struct dlm_comm *cm, const char *buf,
size_t len);
static ssize_t comm_local_read(struct dlm_comm *cm, char *buf);
static ssize_t comm_local_write(struct dlm_comm *cm, const char *buf,
size_t len);
static ssize_t comm_addr_write(struct dlm_comm *cm, const char *buf,
size_t len);
static ssize_t comm_addr_list_read(struct dlm_comm *cm, char *buf);
static ssize_t node_nodeid_read(struct dlm_node *nd, char *buf);
static ssize_t node_nodeid_write(struct dlm_node *nd, const char *buf,
size_t len);
static ssize_t node_weight_read(struct dlm_node *nd, char *buf);
static ssize_t node_weight_write(struct dlm_node *nd, const char *buf,
size_t len);
static struct configfs_attribute *comm_attrs[];
static struct configfs_attribute *node_attrs[];
struct dlm_cluster {
struct config_group group;
......@@ -108,6 +81,12 @@ struct dlm_cluster {
char cl_cluster_name[DLM_LOCKSPACE_LEN];
};
static struct dlm_cluster *config_item_to_cluster(struct config_item *i)
{
return i ? container_of(to_config_group(i), struct dlm_cluster, group) :
NULL;
}
enum {
CLUSTER_ATTR_TCP_PORT = 0,
CLUSTER_ATTR_BUFFER_SIZE,
......@@ -124,33 +103,24 @@ enum {
CLUSTER_ATTR_CLUSTER_NAME,
};
struct cluster_attribute {
struct configfs_attribute attr;
ssize_t (*show)(struct dlm_cluster *, char *);
ssize_t (*store)(struct dlm_cluster *, const char *, size_t);
};
static ssize_t cluster_cluster_name_read(struct dlm_cluster *cl, char *buf)
static ssize_t cluster_cluster_name_show(struct config_item *item, char *buf)
{
struct dlm_cluster *cl = config_item_to_cluster(item);
return sprintf(buf, "%s\n", cl->cl_cluster_name);
}
static ssize_t cluster_cluster_name_write(struct dlm_cluster *cl,
static ssize_t cluster_cluster_name_store(struct config_item *item,
const char *buf, size_t len)
{
struct dlm_cluster *cl = config_item_to_cluster(item);
strlcpy(dlm_config.ci_cluster_name, buf,
sizeof(dlm_config.ci_cluster_name));
strlcpy(cl->cl_cluster_name, buf, sizeof(cl->cl_cluster_name));
return len;
}
static struct cluster_attribute cluster_attr_cluster_name = {
.attr = { .ca_owner = THIS_MODULE,
.ca_name = "cluster_name",
.ca_mode = S_IRUGO | S_IWUSR },
.show = cluster_cluster_name_read,
.store = cluster_cluster_name_write,
};
CONFIGFS_ATTR(cluster_, cluster_name);
static ssize_t cluster_set(struct dlm_cluster *cl, unsigned int *cl_field,
int *info_field, int check_zero,
......@@ -175,17 +145,19 @@ static ssize_t cluster_set(struct dlm_cluster *cl, unsigned int *cl_field,
}
#define CLUSTER_ATTR(name, check_zero) \
static ssize_t name##_write(struct dlm_cluster *cl, const char *buf, size_t len) \
static ssize_t cluster_##name##_store(struct config_item *item, \
const char *buf, size_t len) \
{ \
struct dlm_cluster *cl = config_item_to_cluster(item); \
return cluster_set(cl, &cl->cl_##name, &dlm_config.ci_##name, \
check_zero, buf, len); \
} \
static ssize_t name##_read(struct dlm_cluster *cl, char *buf) \
static ssize_t cluster_##name##_show(struct config_item *item, char *buf) \
{ \
struct dlm_cluster *cl = config_item_to_cluster(item); \
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)
CONFIGFS_ATTR(cluster_, name);
CLUSTER_ATTR(tcp_port, 1);
CLUSTER_ATTR(buffer_size, 1);
......@@ -201,19 +173,19 @@ CLUSTER_ATTR(new_rsb_count, 0);
CLUSTER_ATTR(recover_callbacks, 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_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,
[CLUSTER_ATTR_TIMEWARN_CS] = &cluster_attr_timewarn_cs.attr,
[CLUSTER_ATTR_WAITWARN_US] = &cluster_attr_waitwarn_us.attr,
[CLUSTER_ATTR_NEW_RSB_COUNT] = &cluster_attr_new_rsb_count.attr,
[CLUSTER_ATTR_RECOVER_CALLBACKS] = &cluster_attr_recover_callbacks.attr,
[CLUSTER_ATTR_CLUSTER_NAME] = &cluster_attr_cluster_name.attr,
[CLUSTER_ATTR_TCP_PORT] = &cluster_attr_tcp_port,
[CLUSTER_ATTR_BUFFER_SIZE] = &cluster_attr_buffer_size,
[CLUSTER_ATTR_RSBTBL_SIZE] = &cluster_attr_rsbtbl_size,
[CLUSTER_ATTR_RECOVER_TIMER] = &cluster_attr_recover_timer,
[CLUSTER_ATTR_TOSS_SECS] = &cluster_attr_toss_secs,
[CLUSTER_ATTR_SCAN_SECS] = &cluster_attr_scan_secs,
[CLUSTER_ATTR_LOG_DEBUG] = &cluster_attr_log_debug,
[CLUSTER_ATTR_PROTOCOL] = &cluster_attr_protocol,
[CLUSTER_ATTR_TIMEWARN_CS] = &cluster_attr_timewarn_cs,
[CLUSTER_ATTR_WAITWARN_US] = &cluster_attr_waitwarn_us,
[CLUSTER_ATTR_NEW_RSB_COUNT] = &cluster_attr_new_rsb_count,
[CLUSTER_ATTR_RECOVER_CALLBACKS] = &cluster_attr_recover_callbacks,
[CLUSTER_ATTR_CLUSTER_NAME] = &cluster_attr_cluster_name,
NULL,
};
......@@ -224,83 +196,11 @@ enum {
COMM_ATTR_ADDR_LIST,
};
struct comm_attribute {
struct configfs_attribute attr;
ssize_t (*show)(struct dlm_comm *, char *);
ssize_t (*store)(struct dlm_comm *, const char *, size_t);
};
static struct comm_attribute comm_attr_nodeid = {
.attr = { .ca_owner = THIS_MODULE,
.ca_name = "nodeid",
.ca_mode = S_IRUGO | S_IWUSR },
.show = comm_nodeid_read,
.store = comm_nodeid_write,
};
static struct comm_attribute comm_attr_local = {
.attr = { .ca_owner = THIS_MODULE,
.ca_name = "local",
.ca_mode = S_IRUGO | S_IWUSR },
.show = comm_local_read,
.store = comm_local_write,
};
static struct comm_attribute comm_attr_addr = {
.attr = { .ca_owner = THIS_MODULE,
.ca_name = "addr",
.ca_mode = S_IWUSR },
.store = comm_addr_write,
};
static struct comm_attribute comm_attr_addr_list = {
.attr = { .ca_owner = THIS_MODULE,
.ca_name = "addr_list",
.ca_mode = S_IRUGO },
.show = comm_addr_list_read,
};
static struct configfs_attribute *comm_attrs[] = {
[COMM_ATTR_NODEID] = &comm_attr_nodeid.attr,
[COMM_ATTR_LOCAL] = &comm_attr_local.attr,
[COMM_ATTR_ADDR] = &comm_attr_addr.attr,
[COMM_ATTR_ADDR_LIST] = &comm_attr_addr_list.attr,
NULL,
};
enum {
NODE_ATTR_NODEID = 0,
NODE_ATTR_WEIGHT,
};
struct node_attribute {
struct configfs_attribute attr;
ssize_t (*show)(struct dlm_node *, char *);
ssize_t (*store)(struct dlm_node *, const char *, size_t);
};
static struct node_attribute node_attr_nodeid = {
.attr = { .ca_owner = THIS_MODULE,
.ca_name = "nodeid",
.ca_mode = S_IRUGO | S_IWUSR },
.show = node_nodeid_read,
.store = node_nodeid_write,
};
static struct node_attribute node_attr_weight = {
.attr = { .ca_owner = THIS_MODULE,
.ca_name = "weight",
.ca_mode = S_IRUGO | S_IWUSR },
.show = node_weight_read,
.store = node_weight_write,
};
static struct configfs_attribute *node_attrs[] = {
[NODE_ATTR_NODEID] = &node_attr_nodeid.attr,
[NODE_ATTR_WEIGHT] = &node_attr_weight.attr,
NULL,
};
struct dlm_clusters {
struct configfs_subsystem subsys;
};
......@@ -349,8 +249,6 @@ static struct configfs_group_operations clusters_ops = {
static struct configfs_item_operations cluster_ops = {
.release = release_cluster,
.show_attribute = show_cluster,
.store_attribute = store_cluster,
};
static struct configfs_group_operations spaces_ops = {
......@@ -369,8 +267,6 @@ static struct configfs_group_operations comms_ops = {
static struct configfs_item_operations comm_ops = {
.release = release_comm,
.show_attribute = show_comm,
.store_attribute = store_comm,
};
static struct configfs_group_operations nodes_ops = {
......@@ -380,8 +276,6 @@ static struct configfs_group_operations nodes_ops = {
static struct configfs_item_operations node_ops = {
.release = release_node,
.show_attribute = show_node,
.store_attribute = store_node,
};
static struct config_item_type clusters_type = {
......@@ -427,12 +321,6 @@ static struct config_item_type node_type = {
.ct_owner = THIS_MODULE,
};
static struct dlm_cluster *config_item_to_cluster(struct config_item *i)
{
return i ? container_of(to_config_group(i), struct dlm_cluster, group) :
NULL;
}
static struct dlm_space *config_item_to_space(struct config_item *i)
{
return i ? container_of(to_config_group(i), struct dlm_space, group) :
......@@ -687,66 +575,30 @@ void dlm_config_exit(void)
* Functions for user space to read/write attributes
*/
static ssize_t show_cluster(struct config_item *i, struct configfs_attribute *a,
char *buf)
{
struct dlm_cluster *cl = config_item_to_cluster(i);
struct cluster_attribute *cla =
container_of(a, struct cluster_attribute, attr);
return cla->show ? cla->show(cl, buf) : 0;
}
static ssize_t store_cluster(struct config_item *i,
struct configfs_attribute *a,
const char *buf, size_t len)
static ssize_t comm_nodeid_show(struct config_item *item, char *buf)
{
struct dlm_cluster *cl = config_item_to_cluster(i);
struct cluster_attribute *cla =
container_of(a, struct cluster_attribute, attr);
return cla->store ? cla->store(cl, buf, len) : -EINVAL;
}
static ssize_t show_comm(struct config_item *i, struct configfs_attribute *a,
char *buf)
{
struct dlm_comm *cm = config_item_to_comm(i);
struct comm_attribute *cma =
container_of(a, struct comm_attribute, attr);
return cma->show ? cma->show(cm, buf) : 0;
}
static ssize_t store_comm(struct config_item *i, struct configfs_attribute *a,
const char *buf, size_t len)
{
struct dlm_comm *cm = config_item_to_comm(i);
struct comm_attribute *cma =
container_of(a, struct comm_attribute, attr);
return cma->store ? cma->store(cm, buf, len) : -EINVAL;
return sprintf(buf, "%d\n", config_item_to_comm(item)->nodeid);
}
static ssize_t comm_nodeid_read(struct dlm_comm *cm, char *buf)
{
return sprintf(buf, "%d\n", cm->nodeid);
}
static ssize_t comm_nodeid_write(struct dlm_comm *cm, const char *buf,
static ssize_t comm_nodeid_store(struct config_item *item, const char *buf,
size_t len)
{
int rc = kstrtoint(buf, 0, &cm->nodeid);
int rc = kstrtoint(buf, 0, &config_item_to_comm(item)->nodeid);
if (rc)
return rc;
return len;
}
static ssize_t comm_local_read(struct dlm_comm *cm, char *buf)
static ssize_t comm_local_show(struct config_item *item, char *buf)
{
return sprintf(buf, "%d\n", cm->local);
return sprintf(buf, "%d\n", config_item_to_comm(item)->local);
}
static ssize_t comm_local_write(struct dlm_comm *cm, const char *buf,
static ssize_t comm_local_store(struct config_item *item, const char *buf,
size_t len)
{
struct dlm_comm *cm = config_item_to_comm(item);
int rc = kstrtoint(buf, 0, &cm->local);
if (rc)
......@@ -756,8 +608,10 @@ static ssize_t comm_local_write(struct dlm_comm *cm, const char *buf,
return len;
}
static ssize_t comm_addr_write(struct dlm_comm *cm, const char *buf, size_t len)
static ssize_t comm_addr_store(struct config_item *item, const char *buf,
size_t len)
{
struct dlm_comm *cm = config_item_to_comm(item);
struct sockaddr_storage *addr;
int rv;
......@@ -783,8 +637,9 @@ static ssize_t comm_addr_write(struct dlm_comm *cm, const char *buf, size_t len)
return len;
}
static ssize_t comm_addr_list_read(struct dlm_comm *cm, char *buf)
static ssize_t comm_addr_list_show(struct config_item *item, char *buf)
{
struct dlm_comm *cm = config_item_to_comm(item);
ssize_t s;
ssize_t allowance;
int i;
......@@ -827,32 +682,28 @@ static ssize_t comm_addr_list_read(struct dlm_comm *cm, char *buf)
return 4096 - allowance;
}
static ssize_t show_node(struct config_item *i, struct configfs_attribute *a,
char *buf)
{
struct dlm_node *nd = config_item_to_node(i);
struct node_attribute *nda =
container_of(a, struct node_attribute, attr);
return nda->show ? nda->show(nd, buf) : 0;
}
CONFIGFS_ATTR(comm_, nodeid);
CONFIGFS_ATTR(comm_, local);
CONFIGFS_ATTR_WO(comm_, addr);
CONFIGFS_ATTR_RO(comm_, addr_list);
static ssize_t store_node(struct config_item *i, struct configfs_attribute *a,
const char *buf, size_t len)
{
struct dlm_node *nd = config_item_to_node(i);
struct node_attribute *nda =
container_of(a, struct node_attribute, attr);
return nda->store ? nda->store(nd, buf, len) : -EINVAL;
}
static struct configfs_attribute *comm_attrs[] = {
[COMM_ATTR_NODEID] = &comm_attr_nodeid,
[COMM_ATTR_LOCAL] = &comm_attr_local,
[COMM_ATTR_ADDR] = &comm_attr_addr,
[COMM_ATTR_ADDR_LIST] = &comm_attr_addr_list,
NULL,
};
static ssize_t node_nodeid_read(struct dlm_node *nd, char *buf)
static ssize_t node_nodeid_show(struct config_item *item, char *buf)
{
return sprintf(buf, "%d\n", nd->nodeid);
return sprintf(buf, "%d\n", config_item_to_node(item)->nodeid);
}
static ssize_t node_nodeid_write(struct dlm_node *nd, const char *buf,
static ssize_t node_nodeid_store(struct config_item *item, const char *buf,
size_t len)
{
struct dlm_node *nd = config_item_to_node(item);
uint32_t seq = 0;
int rc = kstrtoint(buf, 0, &nd->nodeid);
......@@ -863,21 +714,30 @@ static ssize_t node_nodeid_write(struct dlm_node *nd, const char *buf,
return len;
}
static ssize_t node_weight_read(struct dlm_node *nd, char *buf)
static ssize_t node_weight_show(struct config_item *item, char *buf)
{
return sprintf(buf, "%d\n", nd->weight);
return sprintf(buf, "%d\n", config_item_to_node(item)->weight);
}
static ssize_t node_weight_write(struct dlm_node *nd, const char *buf,
static ssize_t node_weight_store(struct config_item *item, const char *buf,
size_t len)
{
int rc = kstrtoint(buf, 0, &nd->weight);
int rc = kstrtoint(buf, 0, &config_item_to_node(item)->weight);
if (rc)
return rc;
return len;
}
CONFIGFS_ATTR(node_, nodeid);
CONFIGFS_ATTR(node_, weight);
static struct configfs_attribute *node_attrs[] = {
[NODE_ATTR_NODEID] = &node_attr_nodeid,
[NODE_ATTR_WEIGHT] = &node_attr_weight,
NULL,
};
/*
* Functions for the dlm to get the info that's been configured
*/
......
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