*
* Copyright (c) 2001,2002 Patrick Mochel
* Copyright (c) 2004 Silicon Graphics, Inc.
+ * Copyright (c) 2007 SUSE Linux Products GmbH
+ * Copyright (c) 2007 Tejun Heo <teheo@suse.de>
*
* Please see Documentation/filesystems/sysfs.txt for more information.
*/
#define _SYSFS_H_
#include <linux/compiler.h>
+#include <linux/errno.h>
#include <linux/list.h>
+#include <linux/lockdep.h>
#include <asm/atomic.h>
struct kobject;
struct module;
-struct nameidata;
+enum kobj_ns_type;
+/* FIXME
+ * The *owner field is no longer used.
+ * x86 tree has been cleaned up. The owner
+ * attribute is still left for other arches.
+ */
struct attribute {
- const char * name;
- struct module * owner;
+ const char *name;
+ struct module *owner;
mode_t mode;
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+ struct lock_class_key *key;
+ struct lock_class_key skey;
+#endif
};
+/**
+ * sysfs_attr_init - initialize a dynamically allocated sysfs attribute
+ * @attr: struct attribute to initialize
+ *
+ * Initialize a dynamically allocated struct attribute so we can
+ * make lockdep happy. This is a new requirement for attributes
+ * and initially this is only needed when lockdep is enabled.
+ * Lockdep gives a nice error when your attribute is added to
+ * sysfs if you don't have this.
+ */
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+#define sysfs_attr_init(attr) \
+do { \
+ static struct lock_class_key __key; \
+ \
+ (attr)->key = &__key; \
+} while(0)
+#else
+#define sysfs_attr_init(attr) do {} while(0)
+#endif
+
struct attribute_group {
- const char * name;
- struct attribute ** attrs;
+ const char *name;
+ mode_t (*is_visible)(struct kobject *,
+ struct attribute *, int);
+ struct attribute **attrs;
};
*/
#define __ATTR(_name,_mode,_show,_store) { \
- .attr = {.name = __stringify(_name), .mode = _mode, .owner = THIS_MODULE }, \
+ .attr = {.name = __stringify(_name), .mode = _mode }, \
.show = _show, \
.store = _store, \
}
#define __ATTR_RO(_name) { \
- .attr = { .name = __stringify(_name), .mode = 0444, .owner = THIS_MODULE }, \
- .show = _name##_show, \
+ .attr = { .name = __stringify(_name), .mode = 0444 }, \
+ .show = _name##_show, \
}
#define __ATTR_NULL { .attr = { .name = NULL } }
#define attr_name(_attr) (_attr).attr.name
+struct file;
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,
+ ssize_t (*read)(struct file *, struct kobject *, struct bin_attribute *,
+ char *, loff_t, size_t);
+ ssize_t (*write)(struct file *,struct kobject *, struct bin_attribute *,
+ char *, loff_t, size_t);
+ int (*mmap)(struct file *, struct kobject *, struct bin_attribute *attr,
struct vm_area_struct *vma);
};
+/**
+ * sysfs_bin_attr_init - initialize a dynamically allocated bin_attribute
+ * @attr: struct bin_attribute to initialize
+ *
+ * Initialize a dynamically allocated struct bin_attribute so we
+ * can make lockdep happy. This is a new requirement for
+ * attributes and initially this is only needed when lockdep is
+ * enabled. Lockdep gives a nice error when your attribute is
+ * added to sysfs if you don't have this.
+ */
+#define sysfs_bin_attr_init(bin_attr) sysfs_attr_init(&(bin_attr)->attr)
+
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;
- struct iattr * s_iattr;
- atomic_t s_event;
-};
-
-#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)
+struct sysfs_dirent;
#ifdef CONFIG_SYSFS
-extern int __must_check
-sysfs_create_dir(struct kobject *, struct dentry *);
-
-extern void
-sysfs_remove_dir(struct kobject *);
-
-extern int __must_check
-sysfs_rename_dir(struct kobject *, struct dentry *, const char *new_name);
-
-extern int __must_check
-sysfs_move_dir(struct kobject *, struct kobject *);
-
-extern int __must_check
-sysfs_create_file(struct kobject *, const struct attribute *);
+int sysfs_schedule_callback(struct kobject *kobj, void (*func)(void *),
+ void *data, struct module *owner);
-extern int __must_check
-sysfs_update_file(struct kobject *, const struct attribute *);
+int __must_check sysfs_create_dir(struct kobject *kobj);
+void sysfs_remove_dir(struct kobject *kobj);
+int __must_check sysfs_rename_dir(struct kobject *kobj, const char *new_name);
+int __must_check sysfs_move_dir(struct kobject *kobj,
+ struct kobject *new_parent_kobj);
-extern int __must_check
-sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode);
-
-extern void
-sysfs_remove_file(struct kobject *, const struct attribute *);
-
-extern int __must_check
-sysfs_create_link(struct kobject * kobj, struct kobject * target, const char * name);
-
-extern void
-sysfs_remove_link(struct kobject *, const char * name);
+int __must_check sysfs_create_file(struct kobject *kobj,
+ const struct attribute *attr);
+int __must_check sysfs_create_files(struct kobject *kobj,
+ const struct attribute **attr);
+int __must_check sysfs_chmod_file(struct kobject *kobj, struct attribute *attr,
+ mode_t mode);
+void sysfs_remove_file(struct kobject *kobj, const struct attribute *attr);
+void sysfs_remove_files(struct kobject *kobj, const struct attribute **attr);
int __must_check sysfs_create_bin_file(struct kobject *kobj,
- struct bin_attribute *attr);
-void sysfs_remove_bin_file(struct kobject *kobj, struct bin_attribute *attr);
+ const struct bin_attribute *attr);
+void sysfs_remove_bin_file(struct kobject *kobj,
+ const struct bin_attribute *attr);
+
+int __must_check sysfs_create_link(struct kobject *kobj, struct kobject *target,
+ const char *name);
+int __must_check sysfs_create_link_nowarn(struct kobject *kobj,
+ struct kobject *target,
+ const char *name);
+void sysfs_remove_link(struct kobject *kobj, const char *name);
+
+int sysfs_rename_link(struct kobject *kobj, struct kobject *target,
+ const char *old_name, const char *new_name);
+
+void sysfs_delete_link(struct kobject *dir, struct kobject *targ,
+ const char *name);
+
+int __must_check sysfs_create_group(struct kobject *kobj,
+ const struct attribute_group *grp);
+int sysfs_update_group(struct kobject *kobj,
+ const struct attribute_group *grp);
+void sysfs_remove_group(struct kobject *kobj,
+ const struct attribute_group *grp);
+int sysfs_add_file_to_group(struct kobject *kobj,
+ const struct attribute *attr, const char *group);
+void sysfs_remove_file_from_group(struct kobject *kobj,
+ const struct attribute *attr, const char *group);
+
+void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr);
+void sysfs_notify_dirent(struct sysfs_dirent *sd);
+struct sysfs_dirent *sysfs_get_dirent(struct sysfs_dirent *parent_sd,
+ const void *ns,
+ const unsigned char *name);
+struct sysfs_dirent *sysfs_get(struct sysfs_dirent *sd);
+void sysfs_put(struct sysfs_dirent *sd);
+void sysfs_printk_last_file(void);
+
+/* Called to clear a ns tag when it is no longer valid */
+void sysfs_exit_ns(enum kobj_ns_type type, const void *tag);
+
+int __must_check sysfs_init(void);
-int __must_check sysfs_create_group(struct kobject *,
- const struct attribute_group *);
-void sysfs_remove_group(struct kobject *, const struct attribute_group *);
-void sysfs_notify(struct kobject * k, char *dir, char *attr);
+#else /* CONFIG_SYSFS */
+static inline int sysfs_schedule_callback(struct kobject *kobj,
+ void (*func)(void *), void *data, struct module *owner)
+{
+ return -ENOSYS;
+}
-extern int sysfs_make_shadowed_dir(struct kobject *kobj,
- void * (*follow_link)(struct dentry *, struct nameidata *));
-extern struct dentry *sysfs_create_shadow_dir(struct kobject *kobj);
-extern void sysfs_remove_shadow_dir(struct dentry *dir);
+static inline int sysfs_create_dir(struct kobject *kobj)
+{
+ return 0;
+}
-extern int __must_check sysfs_init(void);
+static inline void sysfs_remove_dir(struct kobject *kobj)
+{
+}
-#else /* CONFIG_SYSFS */
+static inline int sysfs_rename_dir(struct kobject *kobj, const char *new_name)
+{
+ return 0;
+}
-static inline int sysfs_create_dir(struct kobject * k, struct dentry *shadow)
+static inline int sysfs_move_dir(struct kobject *kobj,
+ struct kobject *new_parent_kobj)
{
return 0;
}
-static inline void sysfs_remove_dir(struct kobject * k)
+static inline int sysfs_create_file(struct kobject *kobj,
+ const struct attribute *attr)
{
- ;
+ return 0;
}
-static inline int sysfs_rename_dir(struct kobject * k,
- struct dentry *new_parent,
- const char *new_name)
+static inline int sysfs_create_files(struct kobject *kobj,
+ const struct attribute **attr)
{
return 0;
}
-static inline int sysfs_move_dir(struct kobject * k, struct kobject * new_parent)
+static inline int sysfs_chmod_file(struct kobject *kobj,
+ struct attribute *attr, mode_t mode)
{
return 0;
}
-static inline int sysfs_create_file(struct kobject * k, const struct attribute * a)
+static inline void sysfs_remove_file(struct kobject *kobj,
+ const struct attribute *attr)
+{
+}
+
+static inline void sysfs_remove_files(struct kobject *kobj,
+ const struct attribute **attr)
+{
+}
+
+static inline int sysfs_create_bin_file(struct kobject *kobj,
+ const struct bin_attribute *attr)
{
return 0;
}
-static inline int sysfs_update_file(struct kobject * k, const struct attribute * a)
+static inline void sysfs_remove_bin_file(struct kobject *kobj,
+ const struct bin_attribute *attr)
+{
+}
+
+static inline int sysfs_create_link(struct kobject *kobj,
+ struct kobject *target, const char *name)
{
return 0;
}
-static inline int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode)
+
+static inline int sysfs_create_link_nowarn(struct kobject *kobj,
+ struct kobject *target,
+ const char *name)
{
return 0;
}
-static inline void sysfs_remove_file(struct kobject * k, const struct attribute * a)
+static inline void sysfs_remove_link(struct kobject *kobj, const char *name)
{
- ;
}
-static inline int sysfs_create_link(struct kobject * k, struct kobject * t, const char * n)
+static inline int sysfs_rename_link(struct kobject *k, struct kobject *t,
+ const char *old_name, const char *new_name)
{
return 0;
}
-static inline void sysfs_remove_link(struct kobject * k, const char * name)
+static inline void sysfs_delete_link(struct kobject *k, struct kobject *t,
+ const char *name)
{
- ;
}
-
-static inline int sysfs_create_bin_file(struct kobject * k, struct bin_attribute * a)
+static inline int sysfs_create_group(struct kobject *kobj,
+ const struct attribute_group *grp)
{
return 0;
}
-static inline int sysfs_remove_bin_file(struct kobject * k, struct bin_attribute * a)
+static inline int sysfs_update_group(struct kobject *kobj,
+ const struct attribute_group *grp)
{
return 0;
}
-static inline int sysfs_create_group(struct kobject * k, const struct attribute_group *g)
+static inline void sysfs_remove_group(struct kobject *kobj,
+ const struct attribute_group *grp)
+{
+}
+
+static inline int sysfs_add_file_to_group(struct kobject *kobj,
+ const struct attribute *attr, const char *group)
{
return 0;
}
-static inline void sysfs_remove_group(struct kobject * k, const struct attribute_group * g)
+static inline void sysfs_remove_file_from_group(struct kobject *kobj,
+ const struct attribute *attr, const char *group)
{
- ;
}
-static inline void sysfs_notify(struct kobject * k, char *dir, char *attr)
+static inline void sysfs_notify(struct kobject *kobj, const char *dir,
+ const char *attr)
+{
+}
+static inline void sysfs_notify_dirent(struct sysfs_dirent *sd)
+{
+}
+static inline
+struct sysfs_dirent *sysfs_get_dirent(struct sysfs_dirent *parent_sd,
+ const void *ns,
+ const unsigned char *name)
+{
+ return NULL;
+}
+static inline struct sysfs_dirent *sysfs_get(struct sysfs_dirent *sd)
+{
+ return NULL;
+}
+static inline void sysfs_put(struct sysfs_dirent *sd)
{
}
-static inline int sysfs_make_shadowed_dir(struct kobject *kobj,
- void * (*follow_link)(struct dentry *, struct nameidata *))
+static inline void sysfs_exit_ns(int type, const void *tag)
{
- return 0;
}
static inline int __must_check sysfs_init(void)
return 0;
}
+static inline void sysfs_printk_last_file(void)
+{
+}
+
#endif /* CONFIG_SYSFS */
#endif /* _SYSFS_H_ */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff