Commit 8dc31ff9 authored by Mike Christie's avatar Mike Christie Committed by Nicholas Bellinger

target core: add device action configfs files

This patch adds a new group of files that are to be used to
have the kernel module execution some action. The next patch
will have target_core_user use the group/files to be able to block
a device and to reset its memory buffer used to pass commands
between user/kernel space.

This type of file is different from the existing device attributes
in that they may be write only and when written to they result in
the kernel module executing some function. These need to be
separate from the normal device attributes which get/set device
values so userspace can continue to loop over all the attribs and
get/set them during initialization.
Signed-off-by: 's avatarMike Christie <>
Signed-off-by: 's avatarNicholas Bellinger <>
parent a24e7917
......@@ -1197,6 +1197,7 @@ struct configfs_attribute *passthrough_attrib_attrs[] = {
/* End functions for struct config_item_type tb_dev_attrib_cit */
......@@ -2940,6 +2941,10 @@ static struct config_group *target_core_make_subdev(
config_group_init_type_name(&dev->dev_group, name, &tb->tb_dev_cit);
config_group_init_type_name(&dev->dev_action_group, "action",
configfs_add_default_group(&dev->dev_action_group, &dev->dev_group);
config_group_init_type_name(&dev->dev_attrib.da_group, "attrib",
configfs_add_default_group(&dev->dev_attrib.da_group, &dev->dev_group);
......@@ -3200,6 +3205,7 @@ static const struct config_item_type target_core_cit = {
void target_setup_backend_cits(struct target_backend *tb)
......@@ -17,6 +17,7 @@ struct target_backend {
struct config_item_type tb_dev_cit;
struct config_item_type tb_dev_attrib_cit;
struct config_item_type tb_dev_action_cit;
struct config_item_type tb_dev_pr_cit;
struct config_item_type tb_dev_wwn_cit;
struct config_item_type tb_dev_alua_tg_pt_gps_cit;
......@@ -53,6 +53,7 @@ struct target_backend_ops {
void (*free_prot)(struct se_device *);
struct configfs_attribute **tb_dev_attrib_attrs;
struct configfs_attribute **tb_dev_action_attrs;
struct sbc_ops {
......@@ -809,6 +809,7 @@ struct se_device {
/* T10 SPC-2 + SPC-3 Reservations */
struct t10_reservation t10_pr;
struct se_dev_attrib dev_attrib;
struct config_group dev_action_group;
struct config_group dev_group;
struct config_group dev_pr_group;
struct se_dev_stat_grps dev_stat_grps;
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment