Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 241 insertions, 0 deletions

diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
new file mode 100644
index 00000000..661a9639
--- /dev/null
+++ b/fs/sysfs/sysfs.h
@@ -0,0 +1,241 @@
+/*
+ * fs/sysfs/sysfs.h - sysfs internal header file
+ *
+ * Copyright (c) 2001-3 Patrick Mochel
+ * Copyright (c) 2007 SUSE Linux Products GmbH
+ * Copyright (c) 2007 Tejun Heo <teheo@suse.de>
+ *
+ * This file is released under the GPLv2.
+ */
+
+#include <linux/lockdep.h>
+#include <linux/kobject_ns.h>
+#include <linux/fs.h>
+#include <linux/rbtree.h>
+
+struct sysfs_open_dirent;
+
+/* type-specific structures for sysfs_dirent->s_* union members */
+struct sysfs_elem_dir {
+	struct kobject		*kobj;
+
+	unsigned long		subdirs;
+	/* children rbtree starts here and goes through sd->s_rb */
+	struct rb_root		children;
+};
+
+struct sysfs_elem_symlink {
+	struct sysfs_dirent	*target_sd;
+};
+
+struct sysfs_elem_attr {
+	struct attribute	*attr;
+	struct sysfs_open_dirent *open;
+};
+
+struct sysfs_elem_bin_attr {
+	struct bin_attribute	*bin_attr;
+	struct hlist_head	buffers;
+};
+
+struct sysfs_inode_attrs {
+	struct iattr	ia_iattr;
+	void		*ia_secdata;
+	u32		ia_secdata_len;
+};
+
+/*
+ * sysfs_dirent - the building block of sysfs hierarchy.  Each and
+ * every sysfs node is represented by single sysfs_dirent.
+ *
+ * As long as s_count reference is held, the sysfs_dirent itself is
+ * accessible.  Dereferencing s_elem or any other outer entity
+ * requires s_active reference.
+ */
+struct sysfs_dirent {
+	atomic_t		s_count;
+	atomic_t		s_active;
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+	struct lockdep_map	dep_map;
+#endif
+	struct sysfs_dirent	*s_parent;
+	const char		*s_name;
+
+	struct rb_node		s_rb;
+
+	union {
+		struct completion	*completion;
+		struct sysfs_dirent	*removed_list;
+	} u;
+
+	const void		*s_ns; /* namespace tag */
+	unsigned int		s_hash; /* ns + name hash */
+	union {
+		struct sysfs_elem_dir		s_dir;
+		struct sysfs_elem_symlink	s_symlink;
+		struct sysfs_elem_attr		s_attr;
+		struct sysfs_elem_bin_attr	s_bin_attr;
+	};
+
+	unsigned short		s_flags;
+	umode_t 		s_mode;
+	unsigned int		s_ino;
+	struct sysfs_inode_attrs *s_iattr;
+};
+
+#define SD_DEACTIVATED_BIAS		INT_MIN
+
+#define SYSFS_TYPE_MASK			0x00ff
+#define SYSFS_DIR			0x0001
+#define SYSFS_KOBJ_ATTR			0x0002
+#define SYSFS_KOBJ_BIN_ATTR		0x0004
+#define SYSFS_KOBJ_LINK			0x0008
+#define SYSFS_COPY_NAME			(SYSFS_DIR | SYSFS_KOBJ_LINK)
+#define SYSFS_ACTIVE_REF		(SYSFS_KOBJ_ATTR | SYSFS_KOBJ_BIN_ATTR)
+
+/* identify any namespace tag on sysfs_dirents */
+#define SYSFS_NS_TYPE_MASK		0xf00
+#define SYSFS_NS_TYPE_SHIFT		8
+
+#define SYSFS_FLAG_MASK			~(SYSFS_NS_TYPE_MASK|SYSFS_TYPE_MASK)
+#define SYSFS_FLAG_REMOVED		0x02000
+
+static inline unsigned int sysfs_type(struct sysfs_dirent *sd)
+{
+	return sd->s_flags & SYSFS_TYPE_MASK;
+}
+
+/*
+ * Return any namespace tags on this dirent.
+ * enum kobj_ns_type is defined in linux/kobject.h
+ */
+static inline enum kobj_ns_type sysfs_ns_type(struct sysfs_dirent *sd)
+{
+	return (sd->s_flags & SYSFS_NS_TYPE_MASK) >> SYSFS_NS_TYPE_SHIFT;
+}
+
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+#define sysfs_dirent_init_lockdep(sd)				\
+do {								\
+	struct attribute *attr = sd->s_attr.attr;		\
+	struct lock_class_key *key = attr->key;			\
+	if (!key)						\
+		key = &attr->skey;				\
+								\
+	lockdep_init_map(&sd->dep_map, "s_active", key, 0);	\
+} while(0)
+#else
+#define sysfs_dirent_init_lockdep(sd) do {} while(0)
+#endif
+
+/*
+ * Context structure to be used while adding/removing nodes.
+ */
+struct sysfs_addrm_cxt {
+	struct sysfs_dirent	*parent_sd;
+	struct sysfs_dirent	*removed;
+};
+
+/*
+ * mount.c
+ */
+
+/*
+ * Each sb is associated with a set of namespace tags (i.e.
+ * the network namespace of the task which mounted this sysfs
+ * instance).
+ */
+struct sysfs_super_info {
+	void *ns[KOBJ_NS_TYPES];
+};
+#define sysfs_info(SB) ((struct sysfs_super_info *)(SB->s_fs_info))
+extern struct sysfs_dirent sysfs_root;
+extern struct kmem_cache *sysfs_dir_cachep;
+
+/*
+ * dir.c
+ */
+extern struct mutex sysfs_mutex;
+extern spinlock_t sysfs_assoc_lock;
+
+extern const struct file_operations sysfs_dir_operations;
+extern const struct inode_operations sysfs_dir_inode_operations;
+
+struct dentry *sysfs_get_dentry(struct sysfs_dirent *sd);
+struct sysfs_dirent *sysfs_get_active(struct sysfs_dirent *sd);
+void sysfs_put_active(struct sysfs_dirent *sd);
+void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt,
+		       struct sysfs_dirent *parent_sd);
+int __sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd);
+int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd);
+void sysfs_remove_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd);
+void sysfs_addrm_finish(struct sysfs_addrm_cxt *acxt);
+
+struct sysfs_dirent *sysfs_find_dirent(struct sysfs_dirent *parent_sd,
+				       const void *ns,
+				       const unsigned char *name);
+struct sysfs_dirent *sysfs_get_dirent(struct sysfs_dirent *parent_sd,
+				      const void *ns,
+				      const unsigned char *name);
+struct sysfs_dirent *sysfs_new_dirent(const char *name, umode_t mode, int type);
+
+void release_sysfs_dirent(struct sysfs_dirent *sd);
+
+int sysfs_create_subdir(struct kobject *kobj, const char *name,
+			struct sysfs_dirent **p_sd);
+void sysfs_remove_subdir(struct sysfs_dirent *sd);
+
+int sysfs_rename(struct sysfs_dirent *sd,
+	struct sysfs_dirent *new_parent_sd, const void *ns, const char *new_name);
+
+static inline struct sysfs_dirent *__sysfs_get(struct sysfs_dirent *sd)
+{
+	if (sd) {
+		WARN_ON(!atomic_read(&sd->s_count));
+		atomic_inc(&sd->s_count);
+	}
+	return sd;
+}
+#define sysfs_get(sd) __sysfs_get(sd)
+
+static inline void __sysfs_put(struct sysfs_dirent *sd)
+{
+	if (sd && atomic_dec_and_test(&sd->s_count))
+		release_sysfs_dirent(sd);
+}
+#define sysfs_put(sd) __sysfs_put(sd)
+
+/*
+ * inode.c
+ */
+struct inode *sysfs_get_inode(struct super_block *sb, struct sysfs_dirent *sd);
+void sysfs_evict_inode(struct inode *inode);
+int sysfs_sd_setattr(struct sysfs_dirent *sd, struct iattr *iattr);
+int sysfs_permission(struct inode *inode, int mask);
+int sysfs_setattr(struct dentry *dentry, struct iattr *iattr);
+int sysfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat);
+int sysfs_setxattr(struct dentry *dentry, const char *name, const void *value,
+		size_t size, int flags);
+int sysfs_hash_and_remove(struct sysfs_dirent *dir_sd, const void *ns, const char *name);
+int sysfs_inode_init(void);
+
+/*
+ * file.c
+ */
+extern const struct file_operations sysfs_file_operations;
+
+int sysfs_add_file(struct sysfs_dirent *dir_sd,
+		   const struct attribute *attr, int type);
+
+int sysfs_add_file_mode(struct sysfs_dirent *dir_sd,
+			const struct attribute *attr, int type, umode_t amode);
+/*
+ * bin.c
+ */
+extern const struct file_operations bin_fops;
+void unmap_bin_file(struct sysfs_dirent *attr_sd);
+
+/*
+ * symlink.c
+ */
+extern const struct inode_operations sysfs_symlink_inode_operations;