forked from luck/tmp_suning_uos_patched
5f45f1a78f
Various filesystem drivers have grown a get_dentry() function that's a duplicate of lookup_one_len, except that it doesn't take a maximum length argument and doesn't check for \0 or / in the passed in filename. Switch all these places to use lookup_one_len. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Greg KH <greg@kroah.com> Cc: Paul Jackson <pj@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
97 lines
2.7 KiB
C
97 lines
2.7 KiB
C
|
|
extern struct vfsmount * sysfs_mount;
|
|
extern kmem_cache_t *sysfs_dir_cachep;
|
|
|
|
extern struct inode * sysfs_new_inode(mode_t mode, struct sysfs_dirent *);
|
|
extern int sysfs_create(struct dentry *, int mode, int (*init)(struct inode *));
|
|
|
|
extern int sysfs_make_dirent(struct sysfs_dirent *, struct dentry *, void *,
|
|
umode_t, int);
|
|
|
|
extern int sysfs_add_file(struct dentry *, const struct attribute *, int);
|
|
extern void sysfs_hash_and_remove(struct dentry * dir, const char * name);
|
|
|
|
extern int sysfs_create_subdir(struct kobject *, const char *, struct dentry **);
|
|
extern void sysfs_remove_subdir(struct dentry *);
|
|
|
|
extern const unsigned char * sysfs_get_name(struct sysfs_dirent *sd);
|
|
extern void sysfs_drop_dentry(struct sysfs_dirent *sd, struct dentry *parent);
|
|
extern int sysfs_setattr(struct dentry *dentry, struct iattr *iattr);
|
|
|
|
extern struct rw_semaphore sysfs_rename_sem;
|
|
extern struct super_block * sysfs_sb;
|
|
extern struct file_operations sysfs_dir_operations;
|
|
extern struct file_operations sysfs_file_operations;
|
|
extern struct file_operations bin_fops;
|
|
extern struct inode_operations sysfs_dir_inode_operations;
|
|
extern struct inode_operations sysfs_symlink_inode_operations;
|
|
|
|
struct sysfs_symlink {
|
|
char * link_name;
|
|
struct kobject * target_kobj;
|
|
};
|
|
|
|
static inline struct kobject * to_kobj(struct dentry * dentry)
|
|
{
|
|
struct sysfs_dirent * sd = dentry->d_fsdata;
|
|
return ((struct kobject *) sd->s_element);
|
|
}
|
|
|
|
static inline struct attribute * to_attr(struct dentry * dentry)
|
|
{
|
|
struct sysfs_dirent * sd = dentry->d_fsdata;
|
|
return ((struct attribute *) sd->s_element);
|
|
}
|
|
|
|
static inline struct bin_attribute * to_bin_attr(struct dentry * dentry)
|
|
{
|
|
struct sysfs_dirent * sd = dentry->d_fsdata;
|
|
return ((struct bin_attribute *) sd->s_element);
|
|
}
|
|
|
|
static inline struct kobject *sysfs_get_kobject(struct dentry *dentry)
|
|
{
|
|
struct kobject * kobj = NULL;
|
|
|
|
spin_lock(&dcache_lock);
|
|
if (!d_unhashed(dentry)) {
|
|
struct sysfs_dirent * sd = dentry->d_fsdata;
|
|
if (sd->s_type & SYSFS_KOBJ_LINK) {
|
|
struct sysfs_symlink * sl = sd->s_element;
|
|
kobj = kobject_get(sl->target_kobj);
|
|
} else
|
|
kobj = kobject_get(sd->s_element);
|
|
}
|
|
spin_unlock(&dcache_lock);
|
|
|
|
return kobj;
|
|
}
|
|
|
|
static inline void release_sysfs_dirent(struct sysfs_dirent * sd)
|
|
{
|
|
if (sd->s_type & SYSFS_KOBJ_LINK) {
|
|
struct sysfs_symlink * sl = sd->s_element;
|
|
kfree(sl->link_name);
|
|
kobject_put(sl->target_kobj);
|
|
kfree(sl);
|
|
}
|
|
kfree(sd->s_iattr);
|
|
kmem_cache_free(sysfs_dir_cachep, sd);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
static inline void sysfs_put(struct sysfs_dirent * sd)
|
|
{
|
|
if (atomic_dec_and_test(&sd->s_count))
|
|
release_sysfs_dirent(sd);
|
|
}
|
|
|