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2dde729791
Add sysfs attribute creation that can provide the parent dir kobject instead of always creating the sysfs object dir off of the main per-mount dir. Signed-off-by: Zach Brown <zab@versity.com>
59 lines
1.7 KiB
C
59 lines
1.7 KiB
C
#ifndef _SCOUTFS_SYSFS_H_
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#define _SCOUTFS_SYSFS_H_
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#include <linux/kobject.h>
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/*
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* We have some light wrappers around sysfs attributes to make it safe
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* to tear down the attributes before freeing the data they describe.
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*/
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#define SCOUTFS_ATTR_RO(_name) \
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static struct kobj_attribute scoutfs_attr_##_name = __ATTR_RO(_name)
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#define SCOUTFS_ATTR_RW(_name) \
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static struct kobj_attribute scoutfs_attr_##_name = __ATTR_RW(_name)
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#define SCOUTFS_ATTR_PTR(_name) \
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&scoutfs_attr_##_name.attr
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struct scoutfs_sysfs_attrs {
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struct super_block *sb;
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char *name;
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struct completion comp;
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struct kobject kobj;
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struct kobj_type ktype;
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};
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#define SCOUTFS_SYSFS_ATTRS(kobj) \
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container_of(kobj, struct scoutfs_sysfs_attrs, kobj)
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#define SCOUTFS_SYSFS_ATTRS_SB(kobj) \
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(SCOUTFS_SYSFS_ATTRS(kobj)->sb)
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#define DECLARE_SCOUTFS_SYSFS_ATTRS(name, kobj) \
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struct scoutfs_sysfs_attrs *ssa = SCOUTFS_SYSFS_ATTRS(kobj)
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void scoutfs_sysfs_init_attrs(struct super_block *sb,
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struct scoutfs_sysfs_attrs *ssa);
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int scoutfs_sysfs_create_attrs_parent(struct super_block *sb,
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struct kobject *parent,
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struct scoutfs_sysfs_attrs *ssa,
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struct attribute **attrs, char *fmt, ...);
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#define scoutfs_sysfs_create_attrs(sb, ssa, attrs, fmt, args...) \
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scoutfs_sysfs_create_attrs_parent(sb, scoutfs_sysfs_sb_dir(sb), \
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ssa, attrs, fmt, ##args)
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void scoutfs_sysfs_destroy_attrs(struct super_block *sb,
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struct scoutfs_sysfs_attrs *ssa);
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struct kobject *scoutfs_sysfs_sb_dir(struct super_block *sb);
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int scoutfs_setup_sysfs(struct super_block *sb);
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void scoutfs_destroy_sysfs(struct super_block *sb);
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int __init scoutfs_sysfs_init(void);
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void __exit scoutfs_sysfs_exit(void);
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#endif
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