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167 lines
5.2 KiB
167 lines
5.2 KiB
/* SPDX-License-Identifier: GPL-2.0+ */ |
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/* |
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* sysfs.h - sysfs support declarations. |
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* |
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* Copyright (C) 2005-2014 Nippon Telegraph and Telephone Corporation. |
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* Copyright (C) 2014 HGST, Inc., a Western Digital Company. |
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* |
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* Written by Vyacheslav Dubeyko <[email protected]> |
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*/ |
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#ifndef _NILFS_SYSFS_H |
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#define _NILFS_SYSFS_H |
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#include <linux/sysfs.h> |
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#define NILFS_ROOT_GROUP_NAME "nilfs2" |
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/* |
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* struct nilfs_sysfs_dev_subgroups - device subgroup kernel objects |
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* @sg_superblock_kobj: /sys/fs/<nilfs>/<device>/superblock |
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* @sg_superblock_kobj_unregister: completion state |
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* @sg_segctor_kobj: /sys/fs/<nilfs>/<device>/segctor |
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* @sg_segctor_kobj_unregister: completion state |
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* @sg_mounted_snapshots_kobj: /sys/fs/<nilfs>/<device>/mounted_snapshots |
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* @sg_mounted_snapshots_kobj_unregister: completion state |
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* @sg_checkpoints_kobj: /sys/fs/<nilfs>/<device>/checkpoints |
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* @sg_checkpoints_kobj_unregister: completion state |
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* @sg_segments_kobj: /sys/fs/<nilfs>/<device>/segments |
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* @sg_segments_kobj_unregister: completion state |
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*/ |
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struct nilfs_sysfs_dev_subgroups { |
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/* /sys/fs/<nilfs>/<device>/superblock */ |
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struct kobject sg_superblock_kobj; |
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struct completion sg_superblock_kobj_unregister; |
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/* /sys/fs/<nilfs>/<device>/segctor */ |
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struct kobject sg_segctor_kobj; |
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struct completion sg_segctor_kobj_unregister; |
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/* /sys/fs/<nilfs>/<device>/mounted_snapshots */ |
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struct kobject sg_mounted_snapshots_kobj; |
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struct completion sg_mounted_snapshots_kobj_unregister; |
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/* /sys/fs/<nilfs>/<device>/checkpoints */ |
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struct kobject sg_checkpoints_kobj; |
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struct completion sg_checkpoints_kobj_unregister; |
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/* /sys/fs/<nilfs>/<device>/segments */ |
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struct kobject sg_segments_kobj; |
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struct completion sg_segments_kobj_unregister; |
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}; |
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#define NILFS_COMMON_ATTR_STRUCT(name) \ |
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struct nilfs_##name##_attr { \ |
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struct attribute attr; \ |
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ssize_t (*show)(struct kobject *, struct attribute *, \ |
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char *); \ |
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ssize_t (*store)(struct kobject *, struct attribute *, \ |
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const char *, size_t); \ |
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} |
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NILFS_COMMON_ATTR_STRUCT(feature); |
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#define NILFS_DEV_ATTR_STRUCT(name) \ |
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struct nilfs_##name##_attr { \ |
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struct attribute attr; \ |
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ssize_t (*show)(struct nilfs_##name##_attr *, struct the_nilfs *, \ |
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char *); \ |
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ssize_t (*store)(struct nilfs_##name##_attr *, struct the_nilfs *, \ |
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const char *, size_t); \ |
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} |
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NILFS_DEV_ATTR_STRUCT(dev); |
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NILFS_DEV_ATTR_STRUCT(segments); |
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NILFS_DEV_ATTR_STRUCT(mounted_snapshots); |
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NILFS_DEV_ATTR_STRUCT(checkpoints); |
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NILFS_DEV_ATTR_STRUCT(superblock); |
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NILFS_DEV_ATTR_STRUCT(segctor); |
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#define NILFS_CP_ATTR_STRUCT(name) \ |
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struct nilfs_##name##_attr { \ |
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struct attribute attr; \ |
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ssize_t (*show)(struct nilfs_##name##_attr *, struct nilfs_root *, \ |
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char *); \ |
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ssize_t (*store)(struct nilfs_##name##_attr *, struct nilfs_root *, \ |
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const char *, size_t); \ |
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} |
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NILFS_CP_ATTR_STRUCT(snapshot); |
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#define NILFS_ATTR(type, name, mode, show, store) \ |
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static struct nilfs_##type##_attr nilfs_##type##_attr_##name = \ |
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__ATTR(name, mode, show, store) |
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#define NILFS_INFO_ATTR(type, name) \ |
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NILFS_ATTR(type, name, 0444, NULL, NULL) |
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#define NILFS_RO_ATTR(type, name) \ |
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NILFS_ATTR(type, name, 0444, nilfs_##type##_##name##_show, NULL) |
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#define NILFS_RW_ATTR(type, name) \ |
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NILFS_ATTR(type, name, 0644, \ |
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nilfs_##type##_##name##_show, \ |
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nilfs_##type##_##name##_store) |
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#define NILFS_FEATURE_INFO_ATTR(name) \ |
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NILFS_INFO_ATTR(feature, name) |
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#define NILFS_FEATURE_RO_ATTR(name) \ |
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NILFS_RO_ATTR(feature, name) |
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#define NILFS_FEATURE_RW_ATTR(name) \ |
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NILFS_RW_ATTR(feature, name) |
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#define NILFS_DEV_INFO_ATTR(name) \ |
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NILFS_INFO_ATTR(dev, name) |
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#define NILFS_DEV_RO_ATTR(name) \ |
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NILFS_RO_ATTR(dev, name) |
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#define NILFS_DEV_RW_ATTR(name) \ |
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NILFS_RW_ATTR(dev, name) |
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#define NILFS_SEGMENTS_RO_ATTR(name) \ |
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NILFS_RO_ATTR(segments, name) |
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#define NILFS_SEGMENTS_RW_ATTR(name) \ |
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NILFS_RW_ATTR(segs_info, name) |
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#define NILFS_MOUNTED_SNAPSHOTS_RO_ATTR(name) \ |
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NILFS_RO_ATTR(mounted_snapshots, name) |
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#define NILFS_CHECKPOINTS_RO_ATTR(name) \ |
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NILFS_RO_ATTR(checkpoints, name) |
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#define NILFS_CHECKPOINTS_RW_ATTR(name) \ |
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NILFS_RW_ATTR(checkpoints, name) |
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#define NILFS_SNAPSHOT_INFO_ATTR(name) \ |
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NILFS_INFO_ATTR(snapshot, name) |
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#define NILFS_SNAPSHOT_RO_ATTR(name) \ |
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NILFS_RO_ATTR(snapshot, name) |
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#define NILFS_SNAPSHOT_RW_ATTR(name) \ |
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NILFS_RW_ATTR(snapshot, name) |
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#define NILFS_SUPERBLOCK_RO_ATTR(name) \ |
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NILFS_RO_ATTR(superblock, name) |
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#define NILFS_SUPERBLOCK_RW_ATTR(name) \ |
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NILFS_RW_ATTR(superblock, name) |
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#define NILFS_SEGCTOR_INFO_ATTR(name) \ |
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NILFS_INFO_ATTR(segctor, name) |
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#define NILFS_SEGCTOR_RO_ATTR(name) \ |
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NILFS_RO_ATTR(segctor, name) |
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#define NILFS_SEGCTOR_RW_ATTR(name) \ |
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NILFS_RW_ATTR(segctor, name) |
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#define NILFS_FEATURE_ATTR_LIST(name) \ |
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(&nilfs_feature_attr_##name.attr) |
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#define NILFS_DEV_ATTR_LIST(name) \ |
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(&nilfs_dev_attr_##name.attr) |
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#define NILFS_SEGMENTS_ATTR_LIST(name) \ |
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(&nilfs_segments_attr_##name.attr) |
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#define NILFS_MOUNTED_SNAPSHOTS_ATTR_LIST(name) \ |
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(&nilfs_mounted_snapshots_attr_##name.attr) |
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#define NILFS_CHECKPOINTS_ATTR_LIST(name) \ |
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(&nilfs_checkpoints_attr_##name.attr) |
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#define NILFS_SNAPSHOT_ATTR_LIST(name) \ |
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(&nilfs_snapshot_attr_##name.attr) |
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#define NILFS_SUPERBLOCK_ATTR_LIST(name) \ |
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(&nilfs_superblock_attr_##name.attr) |
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#define NILFS_SEGCTOR_ATTR_LIST(name) \ |
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(&nilfs_segctor_attr_##name.attr) |
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#endif /* _NILFS_SYSFS_H */
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