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-rw-r--r--include/linux/sysfs.h182
1 files changed, 182 insertions, 0 deletions
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
new file mode 100644
index 0000000..6f502ff
--- /dev/null
+++ b/include/linux/sysfs.h
@@ -0,0 +1,182 @@
+/*
+ * sysfs.h - definitions for the device driver filesystem
+ *
+ * Copyright (c) 2001,2002 Patrick Mochel
+ * Copyright (c) 2004 Silicon Graphics, Inc.
+ *
+ * Please see Documentation/filesystems/sysfs.txt for more information.
+ */
+
+#ifndef _SYSFS_H_
+#define _SYSFS_H_
+
+#include <asm/atomic.h>
+
+struct kobject;
+struct module;
+
+struct attribute {
+ char * name;
+ struct module * owner;
+ mode_t mode;
+};
+
+struct attribute_group {
+ char * name;
+ struct attribute ** attrs;
+};
+
+
+
+/**
+ * Use these macros to make defining attributes easier. See include/linux/device.h
+ * for examples..
+ */
+
+#define __ATTR(_name,_mode,_show,_store) { \
+ .attr = {.name = __stringify(_name), .mode = _mode, .owner = THIS_MODULE }, \
+ .show = _show, \
+ .store = _store, \
+}
+
+#define __ATTR_RO(_name) { \
+ .attr = { .name = __stringify(_name), .mode = 0444, .owner = THIS_MODULE }, \
+ .show = _name##_show, \
+}
+
+#define __ATTR_NULL { .attr = { .name = NULL } }
+
+#define attr_name(_attr) (_attr).attr.name
+
+struct vm_area_struct;
+
+struct bin_attribute {
+ struct attribute attr;
+ size_t size;
+ void *private;
+ ssize_t (*read)(struct kobject *, char *, loff_t, size_t);
+ ssize_t (*write)(struct kobject *, char *, loff_t, size_t);
+ int (*mmap)(struct kobject *, struct bin_attribute *attr,
+ struct vm_area_struct *vma);
+};
+
+struct sysfs_ops {
+ ssize_t (*show)(struct kobject *, struct attribute *,char *);
+ ssize_t (*store)(struct kobject *,struct attribute *,const char *, size_t);
+};
+
+struct sysfs_dirent {
+ atomic_t s_count;
+ struct list_head s_sibling;
+ struct list_head s_children;
+ void * s_element;
+ int s_type;
+ umode_t s_mode;
+ struct dentry * s_dentry;
+};
+
+#define SYSFS_ROOT 0x0001
+#define SYSFS_DIR 0x0002
+#define SYSFS_KOBJ_ATTR 0x0004
+#define SYSFS_KOBJ_BIN_ATTR 0x0008
+#define SYSFS_KOBJ_LINK 0x0020
+#define SYSFS_NOT_PINNED (SYSFS_KOBJ_ATTR | SYSFS_KOBJ_BIN_ATTR | SYSFS_KOBJ_LINK)
+
+#ifdef CONFIG_SYSFS
+
+extern int
+sysfs_create_dir(struct kobject *);
+
+extern void
+sysfs_remove_dir(struct kobject *);
+
+extern int
+sysfs_rename_dir(struct kobject *, const char *new_name);
+
+extern int
+sysfs_create_file(struct kobject *, const struct attribute *);
+
+extern int
+sysfs_update_file(struct kobject *, const struct attribute *);
+
+extern void
+sysfs_remove_file(struct kobject *, const struct attribute *);
+
+extern int
+sysfs_create_link(struct kobject * kobj, struct kobject * target, char * name);
+
+extern void
+sysfs_remove_link(struct kobject *, char * name);
+
+int sysfs_create_bin_file(struct kobject * kobj, struct bin_attribute * attr);
+int sysfs_remove_bin_file(struct kobject * kobj, struct bin_attribute * attr);
+
+int sysfs_create_group(struct kobject *, const struct attribute_group *);
+void sysfs_remove_group(struct kobject *, const struct attribute_group *);
+
+#else /* CONFIG_SYSFS */
+
+static inline int sysfs_create_dir(struct kobject * k)
+{
+ return 0;
+}
+
+static inline void sysfs_remove_dir(struct kobject * k)
+{
+ ;
+}
+
+static inline int sysfs_rename_dir(struct kobject * k, const char *new_name)
+{
+ return 0;
+}
+
+static inline int sysfs_create_file(struct kobject * k, const struct attribute * a)
+{
+ return 0;
+}
+
+static inline int sysfs_update_file(struct kobject * k, const struct attribute * a)
+{
+ return 0;
+}
+
+static inline void sysfs_remove_file(struct kobject * k, const struct attribute * a)
+{
+ ;
+}
+
+static inline int sysfs_create_link(struct kobject * k, struct kobject * t, char * n)
+{
+ return 0;
+}
+
+static inline void sysfs_remove_link(struct kobject * k, char * name)
+{
+ ;
+}
+
+
+static inline int sysfs_create_bin_file(struct kobject * k, struct bin_attribute * a)
+{
+ return 0;
+}
+
+static inline int sysfs_remove_bin_file(struct kobject * k, struct bin_attribute * a)
+{
+ return 0;
+}
+
+static inline int sysfs_create_group(struct kobject * k, const struct attribute_group *g)
+{
+ return 0;
+}
+
+static inline void sysfs_remove_group(struct kobject * k, const struct attribute_group * g)
+{
+ ;
+}
+
+#endif /* CONFIG_SYSFS */
+
+#endif /* _SYSFS_H_ */
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