source: svn/trunk/newcon3bcm2_21bu/toolchain/mips-linux-uclibc/include/linux/sysfs.h @ 52

/*
 * 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 int
sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode);

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 int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode)
{
        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_ */