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sysfs: make kobj point to sysfs_dirent instead of dentry 

As kobj sysfs dentries and inodes are gonna be made reclaimable,
dentry can't be used as naming token for sysfs file/directory, replace
kobj->dentry with kobj->sd.  The only external interface change is
shadow directory handling.  All other changes are contained in kobj
and sysfs.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Tejun Heo 2007-06-14 04:27:22 +09:00 committed by Greg Kroah-Hartman
parent f0b0af4792
commit 608e266a2d
10 changed files with 156 additions and 152 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
fs/sysfs/bin.c
View File

@ -234,9 +234,9 @@ const struct file_operations bin_fops = {
int sysfs_create_bin_file(struct kobject * kobj, struct bin_attribute * attr)
{
BUG_ON(!kobj || !kobj->dentry || !attr);
BUG_ON(!kobj || !kobj->sd || !attr);
return sysfs_add_file(kobj->dentry, &attr->attr, SYSFS_KOBJ_BIN_ATTR);
return sysfs_add_file(kobj->sd, &attr->attr, SYSFS_KOBJ_BIN_ATTR);
}
@ -248,7 +248,7 @@ int sysfs_create_bin_file(struct kobject * kobj, struct bin_attribute * attr)
void sysfs_remove_bin_file(struct kobject * kobj, struct bin_attribute * attr)
{
if (sysfs_hash_and_remove(kobj->dentry, attr->attr.name) < 0) {
if (sysfs_hash_and_remove(kobj->sd, attr->attr.name) < 0) {
printk(KERN_ERR "%s: "
"bad dentry or inode or no such file: \"%s\"\n",
__FUNCTION__, attr->attr.name);

119
fs/sysfs/dir.c
View File

@ -368,9 +368,10 @@ struct sysfs_dirent *sysfs_get_dirent(struct sysfs_dirent *parent_sd,
return sd;
}
static int create_dir(struct kobject *kobj, struct dentry *parent,
const char *name, struct dentry **p_dentry)
static int create_dir(struct kobject *kobj, struct sysfs_dirent *parent_sd,
const char *name, struct sysfs_dirent **p_sd)
{
struct dentry *parent = parent_sd->s_dentry;
int error;
umode_t mode = S_IFDIR| S_IRWXU | S_IRUGO | S_IXUGO;
struct dentry *dentry;
@ -409,14 +410,14 @@ static int create_dir(struct kobject *kobj, struct dentry *parent,
/* link in */
error = -EEXIST;
if (sysfs_find_dirent(parent->d_fsdata, name))
if (sysfs_find_dirent(parent_sd, name))
goto out_iput;
sysfs_instantiate(dentry, inode);
inc_nlink(parent->d_inode);
sysfs_attach_dirent(sd, parent->d_fsdata, dentry);
sysfs_attach_dirent(sd, parent_sd, dentry);
*p_dentry = dentry;
*p_sd = sd;
error = 0;
goto out_unlock; /* pin directory dentry in core */
@ -433,38 +434,37 @@ static int create_dir(struct kobject *kobj, struct dentry *parent,
return error;
}
int sysfs_create_subdir(struct kobject * k, const char * n, struct dentry ** d)
int sysfs_create_subdir(struct kobject *kobj, const char *name,
struct sysfs_dirent **p_sd)
{
return create_dir(k,k->dentry,n,d);
return create_dir(kobj, kobj->sd, name, p_sd);
}
/**
* sysfs_create_dir - create a directory for an object.
* @kobj: object we're creating directory for.
* @shadow_parent: parent parent object.
* @shadow_parent: parent object.
*/
int sysfs_create_dir(struct kobject * kobj, struct dentry *shadow_parent)
int sysfs_create_dir(struct kobject *kobj,
struct sysfs_dirent *shadow_parent_sd)
{
struct dentry * dentry = NULL;
struct dentry * parent;
struct sysfs_dirent *parent_sd, *sd;
int error = 0;
BUG_ON(!kobj);
if (shadow_parent)
parent = shadow_parent;
if (shadow_parent_sd)
parent_sd = shadow_parent_sd;
else if (kobj->parent)
parent = kobj->parent->dentry;
parent_sd = kobj->parent->sd;
else if (sysfs_mount && sysfs_mount->mnt_sb)
parent = sysfs_mount->mnt_sb->s_root;
parent_sd = sysfs_mount->mnt_sb->s_root->d_fsdata;
else
return -EFAULT;
error = create_dir(kobj,parent,kobject_name(kobj),&dentry);
error = create_dir(kobj, parent_sd, kobject_name(kobj), &sd);
if (!error)
kobj->dentry = dentry;
kobj->sd = sd;
return error;
}
@ -525,18 +525,16 @@ const struct inode_operations sysfs_dir_inode_operations = {
.setattr = sysfs_setattr,
};
static void remove_dir(struct dentry * d)
static void remove_dir(struct sysfs_dirent *sd)
{
struct dentry *parent = d->d_parent;
struct sysfs_dirent *sd = d->d_fsdata;
struct dentry *parent = sd->s_parent->s_dentry;
mutex_lock(&parent->d_inode->i_mutex);
sysfs_unlink_sibling(sd);
sd->s_flags |= SYSFS_FLAG_REMOVED;
pr_debug(" o %s removing done (%d)\n",d->d_name.name,
atomic_read(&d->d_count));
pr_debug(" o %s removing done\n", sd->s_name);
mutex_unlock(&parent->d_inode->i_mutex);
@ -545,25 +543,26 @@ static void remove_dir(struct dentry * d)
sysfs_put(sd);
}
void sysfs_remove_subdir(struct dentry * d)
void sysfs_remove_subdir(struct sysfs_dirent *sd)
{
remove_dir(d);
remove_dir(sd);
}
static void __sysfs_remove_dir(struct dentry *dentry)
static void __sysfs_remove_dir(struct sysfs_dirent *dir_sd)
{
struct sysfs_dirent *removed = NULL;
struct sysfs_dirent *parent_sd;
struct sysfs_dirent **pos;
struct dentry *dir;
if (!dentry)
if (!dir_sd)
return;
pr_debug("sysfs %s: removing dir\n",dentry->d_name.name);
mutex_lock(&dentry->d_inode->i_mutex);
parent_sd = dentry->d_fsdata;
pos = &parent_sd->s_children;
dir = dir_sd->s_dentry;
pr_debug("sysfs %s: removing dir\n", dir_sd->s_name);
mutex_lock(&dir->d_inode->i_mutex);
pos = &dir_sd->s_children;
while (*pos) {
struct sysfs_dirent *sd = *pos;
@ -575,7 +574,7 @@ static void __sysfs_remove_dir(struct dentry *dentry)
} else
pos = &(*pos)->s_sibling;
}
mutex_unlock(&dentry->d_inode->i_mutex);
mutex_unlock(&dir->d_inode->i_mutex);
while (removed) {
struct sysfs_dirent *sd = removed;
@ -588,7 +587,7 @@ static void __sysfs_remove_dir(struct dentry *dentry)
sysfs_put(sd);
}
remove_dir(dentry);
remove_dir(dir_sd);
}
/**
@ -602,25 +601,25 @@ static void __sysfs_remove_dir(struct dentry *dentry)
void sysfs_remove_dir(struct kobject * kobj)
{
struct dentry *d = kobj->dentry;
struct sysfs_dirent *sd = kobj->sd;
spin_lock(&kobj_sysfs_assoc_lock);
kobj->dentry = NULL;
kobj->sd = NULL;
spin_unlock(&kobj_sysfs_assoc_lock);
__sysfs_remove_dir(d);
__sysfs_remove_dir(sd);
}
int sysfs_rename_dir(struct kobject * kobj, struct dentry *new_parent,
int sysfs_rename_dir(struct kobject *kobj, struct sysfs_dirent *new_parent_sd,
const char *new_name)
{
struct sysfs_dirent *sd = kobj->dentry->d_fsdata;
struct sysfs_dirent *parent_sd = new_parent->d_fsdata;
struct sysfs_dirent *sd = kobj->sd;
struct dentry *new_parent = new_parent_sd->s_dentry;
struct dentry *new_dentry;
char *dup_name;
int error;
if (!new_parent)
if (!new_parent_sd)
return -EFAULT;
down_write(&sysfs_rename_sem);
@ -637,9 +636,9 @@ int sysfs_rename_dir(struct kobject * kobj, struct dentry *new_parent,
* shadows of the same directory
*/
error = -EINVAL;
if (kobj->dentry->d_parent->d_inode != new_parent->d_inode ||
if (sd->s_parent->s_dentry->d_inode != new_parent->d_inode ||
new_dentry->d_parent->d_inode != new_parent->d_inode ||
new_dentry == kobj->dentry)
new_dentry == sd->s_dentry)
goto out_dput;
error = -EEXIST;
@ -661,12 +660,12 @@ int sysfs_rename_dir(struct kobject * kobj, struct dentry *new_parent,
/* move under the new parent */
d_add(new_dentry, NULL);
d_move(kobj->dentry, new_dentry);
d_move(sd->s_dentry, new_dentry);
sysfs_unlink_sibling(sd);
sysfs_get(parent_sd);
sysfs_get(new_parent_sd);
sysfs_put(sd->s_parent);
sd->s_parent = parent_sd;
sd->s_parent = new_parent_sd;
sysfs_link_sibling(sd);
error = 0;
@ -691,9 +690,9 @@ int sysfs_move_dir(struct kobject *kobj, struct kobject *new_parent)
int error;
old_parent_dentry = kobj->parent ?
kobj->parent->dentry : sysfs_mount->mnt_sb->s_root;
kobj->parent->sd->s_dentry : sysfs_mount->mnt_sb->s_root;
new_parent_dentry = new_parent ?
new_parent->dentry : sysfs_mount->mnt_sb->s_root;
new_parent->sd->s_dentry : sysfs_mount->mnt_sb->s_root;
if (old_parent_dentry->d_inode == new_parent_dentry->d_inode)
return 0; /* nothing to move */
@ -705,7 +704,7 @@ int sysfs_move_dir(struct kobject *kobj, struct kobject *new_parent)
}
new_parent_sd = new_parent_dentry->d_fsdata;
sd = kobj->dentry->d_fsdata;
sd = kobj->sd;
new_dentry = lookup_one_len(kobj->name, new_parent_dentry,
strlen(kobj->name));
@ -715,7 +714,7 @@ int sysfs_move_dir(struct kobject *kobj, struct kobject *new_parent)
} else
error = 0;
d_add(new_dentry, NULL);
d_move(kobj->dentry, new_dentry);
d_move(sd->s_dentry, new_dentry);
dput(new_dentry);
/* Remove from old parent's list and insert into new parent's list. */
@ -885,7 +884,7 @@ int sysfs_make_shadowed_dir(struct kobject *kobj,
struct inode *inode;
struct inode_operations *i_op;
inode = kobj->dentry->d_inode;
inode = kobj->sd->s_dentry->d_inode;
if (inode->i_op != &sysfs_dir_inode_operations)
return -EINVAL;
@ -912,16 +911,16 @@ int sysfs_make_shadowed_dir(struct kobject *kobj,
* directory.
*/
struct dentry *sysfs_create_shadow_dir(struct kobject *kobj)
struct sysfs_dirent *sysfs_create_shadow_dir(struct kobject *kobj)
{
struct dentry *dir = kobj->dentry;
struct dentry *dir = kobj->sd->s_dentry;
struct inode *inode = dir->d_inode;
struct dentry *parent = dir->d_parent;
struct sysfs_dirent *parent_sd = parent->d_fsdata;
struct dentry *shadow;
struct sysfs_dirent *sd;
shadow = ERR_PTR(-EINVAL);
sd = ERR_PTR(-EINVAL);
if (!sysfs_is_shadowed_inode(inode))
goto out;
@ -944,25 +943,25 @@ struct dentry *sysfs_create_shadow_dir(struct kobject *kobj)
dget(shadow); /* Extra count - pin the dentry in core */
out:
return shadow;
return sd;
nomem:
dput(shadow);
shadow = ERR_PTR(-ENOMEM);
sd = ERR_PTR(-ENOMEM);
goto out;
}
/**
* sysfs_remove_shadow_dir - remove an object's directory.
* @shadow: dentry of shadow directory
* @shadow_sd: sysfs_dirent of shadow directory
*
* The only thing special about this is that we remove any files in
* the directory before we remove the directory, and we've inlined
* what used to be sysfs_rmdir() below, instead of calling separately.
*/
void sysfs_remove_shadow_dir(struct dentry *shadow)
void sysfs_remove_shadow_dir(struct sysfs_dirent *shadow_sd)
{
__sysfs_remove_dir(shadow);
__sysfs_remove_dir(shadow_sd);
}
const struct file_operations sysfs_dir_operations = {

47
fs/sysfs/file.c
View File

@ -385,7 +385,7 @@ static struct dentry *step_down(struct dentry *dir, const char * name)
void sysfs_notify(struct kobject * k, char *dir, char *attr)
{
struct dentry *de = k->dentry;
struct dentry *de = k->sd->s_dentry;
if (de)
dget(de);
if (de && dir)
@ -412,16 +412,17 @@ const struct file_operations sysfs_file_operations = {
};
int sysfs_add_file(struct dentry * dir, const struct attribute * attr, int type)
int sysfs_add_file(struct sysfs_dirent *dir_sd, const struct attribute *attr,
int type)
{
struct sysfs_dirent * parent_sd = dir->d_fsdata;
struct dentry *dir = dir_sd->s_dentry;
umode_t mode = (attr->mode & S_IALLUGO) | S_IFREG;
struct sysfs_dirent *sd;
int error = 0;
mutex_lock(&dir->d_inode->i_mutex);
if (sysfs_find_dirent(parent_sd, attr->name)) {
if (sysfs_find_dirent(dir_sd, attr->name)) {
error = -EEXIST;
goto out_unlock;
}
@ -432,7 +433,7 @@ int sysfs_add_file(struct dentry * dir, const struct attribute * attr, int type)
goto out_unlock;
}
sd->s_elem.attr.attr = (void *)attr;
sysfs_attach_dirent(sd, parent_sd, NULL);
sysfs_attach_dirent(sd, dir_sd, NULL);
out_unlock:
mutex_unlock(&dir->d_inode->i_mutex);
@ -448,9 +449,9 @@ int sysfs_add_file(struct dentry * dir, const struct attribute * attr, int type)
int sysfs_create_file(struct kobject * kobj, const struct attribute * attr)
{
BUG_ON(!kobj || !kobj->dentry || !attr);
BUG_ON(!kobj || !kobj->sd || !attr);
return sysfs_add_file(kobj->dentry, attr, SYSFS_KOBJ_ATTR);
return sysfs_add_file(kobj->sd, attr, SYSFS_KOBJ_ATTR);
}
@ -464,16 +465,16 @@ int sysfs_create_file(struct kobject * kobj, const struct attribute * attr)
int sysfs_add_file_to_group(struct kobject *kobj,
const struct attribute *attr, const char *group)
{
struct dentry *dir;
struct sysfs_dirent *dir_sd;
int error;
dir = lookup_one_len(group, kobj->dentry, strlen(group));
if (IS_ERR(dir))
error = PTR_ERR(dir);
else {
error = sysfs_add_file(dir, attr, SYSFS_KOBJ_ATTR);
dput(dir);
}
dir_sd = sysfs_get_dirent(kobj->sd, group);
if (!dir_sd)
return -ENOENT;
error = sysfs_add_file(dir_sd, attr, SYSFS_KOBJ_ATTR);
sysfs_put(dir_sd);
return error;
}
EXPORT_SYMBOL_GPL(sysfs_add_file_to_group);
@ -486,7 +487,7 @@ EXPORT_SYMBOL_GPL(sysfs_add_file_to_group);
*/
int sysfs_update_file(struct kobject * kobj, const struct attribute * attr)
{
struct dentry * dir = kobj->dentry;
struct dentry *dir = kobj->sd->s_dentry;
struct dentry * victim;
int res = -ENOENT;
@ -522,7 +523,7 @@ int sysfs_update_file(struct kobject * kobj, const struct attribute * attr)
*/
int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode)
{
struct dentry *dir = kobj->dentry;
struct dentry *dir = kobj->sd->s_dentry;
struct dentry *victim;
struct inode * inode;
struct iattr newattrs;
@ -560,7 +561,7 @@ EXPORT_SYMBOL_GPL(sysfs_chmod_file);
void sysfs_remove_file(struct kobject * kobj, const struct attribute * attr)
{
sysfs_hash_and_remove(kobj->dentry, attr->name);
sysfs_hash_and_remove(kobj->sd, attr->name);
}
@ -573,12 +574,12 @@ void sysfs_remove_file(struct kobject * kobj, const struct attribute * attr)
void sysfs_remove_file_from_group(struct kobject *kobj,
const struct attribute *attr, const char *group)
{
struct dentry *dir;
struct sysfs_dirent *dir_sd;
dir = lookup_one_len(group, kobj->dentry, strlen(group));
if (!IS_ERR(dir)) {
sysfs_hash_and_remove(dir, attr->name);
dput(dir);
dir_sd = sysfs_get_dirent(kobj->sd, group);
if (dir_sd) {
sysfs_hash_and_remove(dir_sd, attr->name);
sysfs_put(dir_sd);
}
}
EXPORT_SYMBOL_GPL(sysfs_remove_file_from_group);

55
fs/sysfs/group.c
View File

@ -18,26 +18,25 @@
#include "sysfs.h"
static void remove_files(struct dentry * dir,
const struct attribute_group * grp)
static void remove_files(struct sysfs_dirent *dir_sd,
const struct attribute_group *grp)
{
struct attribute *const* attr;
for (attr = grp->attrs; *attr; attr++)
sysfs_hash_and_remove(dir,(*attr)->name);
sysfs_hash_and_remove(dir_sd, (*attr)->name);
}
static int create_files(struct dentry * dir,
const struct attribute_group * grp)
static int create_files(struct sysfs_dirent *dir_sd,
const struct attribute_group *grp)
{
struct attribute *const* attr;
int error = 0;
for (attr = grp->attrs; *attr && !error; attr++) {
error = sysfs_add_file(dir, *attr, SYSFS_KOBJ_ATTR);
}
for (attr = grp->attrs; *attr && !error; attr++)
error = sysfs_add_file(dir_sd, *attr, SYSFS_KOBJ_ATTR);
if (error)
remove_files(dir,grp);
remove_files(dir_sd, grp);
return error;
}
@ -45,44 +44,44 @@ static int create_files(struct dentry * dir,
int sysfs_create_group(struct kobject * kobj,
const struct attribute_group * grp)
{
struct dentry * dir;
struct sysfs_dirent *sd;
int error;
BUG_ON(!kobj || !kobj->dentry);
BUG_ON(!kobj || !kobj->sd);
if (grp->name) {
error = sysfs_create_subdir(kobj,grp->name,&dir);
error = sysfs_create_subdir(kobj, grp->name, &sd);
if (error)
return error;
} else
dir = kobj->dentry;
dir = dget(dir);
if ((error = create_files(dir,grp))) {
sd = kobj->sd;
sysfs_get(sd);
error = create_files(sd, grp);
if (error) {
if (grp->name)
sysfs_remove_subdir(dir);
sysfs_remove_subdir(sd);
}
dput(dir);
sysfs_put(sd);
return error;
}
void sysfs_remove_group(struct kobject * kobj,
const struct attribute_group * grp)
{
struct dentry * dir;
struct sysfs_dirent *dir_sd = kobj->sd;
struct sysfs_dirent *sd;
if (grp->name) {
dir = lookup_one_len_kern(grp->name, kobj->dentry,
strlen(grp->name));
BUG_ON(IS_ERR(dir));
}
else
dir = dget(kobj->dentry);
sd = sysfs_get_dirent(dir_sd, grp->name);
BUG_ON(!sd);
} else
sd = sysfs_get(dir_sd);
remove_files(dir,grp);
remove_files(sd, grp);
if (grp->name)
sysfs_remove_subdir(dir);
/* release the ref. taken in this routine */
dput(dir);
sysfs_remove_subdir(sd);
sysfs_put(sd);
}

11
fs/sysfs/inode.c
View File

@ -275,22 +275,23 @@ void sysfs_drop_dentry(struct sysfs_dirent *sd)
}
}
int sysfs_hash_and_remove(struct dentry * dir, const char * name)
int sysfs_hash_and_remove(struct sysfs_dirent *dir_sd, const char *name)
{
struct dentry *dir;
struct sysfs_dirent **pos, *sd;
struct sysfs_dirent *parent_sd;
int found = 0;
if (!dir)
if (!dir_sd)
return -ENOENT;
dir = dir_sd->s_dentry;
if (dir->d_inode == NULL)
/* no inode means this hasn't been made visible yet */
return -ENOENT;
parent_sd = dir->d_fsdata;
mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_PARENT);
for (pos = &parent_sd->s_children; *pos; pos = &(*pos)->s_sibling) {
for (pos = &dir_sd->s_children; *pos; pos = &(*pos)->s_sibling) {
sd = *pos;
if (!sysfs_type(sd))

22
fs/sysfs/symlink.c
View File

@ -66,7 +66,6 @@ static int sysfs_add_link(struct sysfs_dirent * parent_sd, const char * name,
*/
int sysfs_create_link(struct kobject * kobj, struct kobject * target, const char * name)
{
struct dentry *dentry = NULL;
struct sysfs_dirent *parent_sd = NULL;
struct sysfs_dirent *target_sd = NULL;
int error = -EEXIST;
@ -75,29 +74,28 @@ int sysfs_create_link(struct kobject * kobj, struct kobject * target, const char
if (!kobj) {
if (sysfs_mount && sysfs_mount->mnt_sb)
dentry = sysfs_mount->mnt_sb->s_root;
parent_sd = sysfs_mount->mnt_sb->s_root->d_fsdata;
} else
dentry = kobj->dentry;
parent_sd = kobj->sd;
if (!dentry)
if (!parent_sd)
return -EFAULT;
parent_sd = dentry->d_fsdata;
/* target->dentry can go away beneath us but is protected with
/* target->sd can go away beneath us but is protected with
* kobj_sysfs_assoc_lock. Fetch target_sd from it.
*/
spin_lock(&kobj_sysfs_assoc_lock);
if (target->dentry)
target_sd = sysfs_get(target->dentry->d_fsdata);
if (target->sd)
target_sd = sysfs_get(target->sd);
spin_unlock(&kobj_sysfs_assoc_lock);
if (!target_sd)
return -ENOENT;
mutex_lock(&dentry->d_inode->i_mutex);
if (!sysfs_find_dirent(dentry->d_fsdata, name))
mutex_lock(&parent_sd->s_dentry->d_inode->i_mutex);
if (!sysfs_find_dirent(parent_sd, name))
error = sysfs_add_link(parent_sd, name, target_sd);
mutex_unlock(&dentry->d_inode->i_mutex);
mutex_unlock(&parent_sd->s_dentry->d_inode->i_mutex);
if (error)
sysfs_put(target_sd);
@ -114,7 +112,7 @@ int sysfs_create_link(struct kobject * kobj, struct kobject * target, const char
void sysfs_remove_link(struct kobject * kobj, const char * name)
{
sysfs_hash_and_remove(kobj->dentry,name);
sysfs_hash_and_remove(kobj->sd, name);
}
static int sysfs_get_target_path(struct sysfs_dirent * parent_sd,

10
fs/sysfs/sysfs.h
View File

@ -69,12 +69,14 @@ extern void sysfs_attach_dirent(struct sysfs_dirent *sd,
struct sysfs_dirent *parent_sd,
struct dentry *dentry);
extern int sysfs_add_file(struct dentry *, const struct attribute *, int);
extern int sysfs_hash_and_remove(struct dentry * dir, const char * name);
extern int sysfs_add_file(struct sysfs_dirent *dir_sd,
const struct attribute *attr, int type);
extern int sysfs_hash_and_remove(struct sysfs_dirent *dir_sd, const char *name);
extern struct sysfs_dirent *sysfs_find(struct sysfs_dirent *dir, const char * name);
extern int sysfs_create_subdir(struct kobject *, const char *, struct dentry **);
extern void sysfs_remove_subdir(struct dentry *);
extern int sysfs_create_subdir(struct kobject *kobj, const char *name,
struct sysfs_dirent **p_sd);
extern void sysfs_remove_subdir(struct sysfs_dirent *sd);
extern void sysfs_drop_dentry(struct sysfs_dirent *sd);
extern int sysfs_setattr(struct dentry *dentry, struct iattr *iattr);

9
include/linux/kobject.h
View File

@ -55,7 +55,7 @@ struct kobject {
struct kobject * parent;
struct kset * kset;
struct kobj_type * ktype;
struct dentry * dentry;
struct sysfs_dirent * sd;
wait_queue_head_t poll;
};
@ -71,13 +71,14 @@ extern void kobject_init(struct kobject *);
extern void kobject_cleanup(struct kobject *);
extern int __must_check kobject_add(struct kobject *);
extern int __must_check kobject_shadow_add(struct kobject *, struct dentry *);
extern int __must_check kobject_shadow_add(struct kobject *kobj,
struct sysfs_dirent *shadow_parent);
extern void kobject_del(struct kobject *);
extern int __must_check kobject_rename(struct kobject *, const char *new_name);
extern int __must_check kobject_shadow_rename(struct kobject *kobj,
struct dentry *new_parent,
const char *new_name);
struct sysfs_dirent *new_parent,
const char *new_name);
extern int __must_check kobject_move(struct kobject *, struct kobject *);
extern int __must_check kobject_register(struct kobject *);

19
include/linux/sysfs.h
View File

@ -19,6 +19,7 @@ struct kobject;
struct module;
struct nameidata;
struct dentry;
struct sysfs_dirent;
/* FIXME
* The *owner field is no longer used, but leave around
@ -92,13 +93,14 @@ extern int sysfs_schedule_callback(struct kobject *kobj,
void (*func)(void *), void *data, struct module *owner);
extern int __must_check
sysfs_create_dir(struct kobject *, struct dentry *);
sysfs_create_dir(struct kobject *kobj, struct sysfs_dirent *shadow_parent_sd);
extern void
sysfs_remove_dir(struct kobject *);
extern int __must_check
sysfs_rename_dir(struct kobject *, struct dentry *, const char *new_name);
sysfs_rename_dir(struct kobject *kobj, struct sysfs_dirent *new_parent_sd,
const char *new_name);
extern int __must_check
sysfs_move_dir(struct kobject *, struct kobject *);
@ -138,8 +140,8 @@ void sysfs_notify(struct kobject * k, char *dir, char *attr);
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);
extern struct sysfs_dirent *sysfs_create_shadow_dir(struct kobject *kobj);
extern void sysfs_remove_shadow_dir(struct sysfs_dirent *shadow_sd);
extern int __must_check sysfs_init(void);
@ -151,7 +153,8 @@ static inline int sysfs_schedule_callback(struct kobject *kobj,
return -ENOSYS;
}
static inline int sysfs_create_dir(struct kobject * k, struct dentry *shadow)
static inline int sysfs_create_dir(struct kobject *kobj,
struct sysfs_dirent *shadow_parent_sd)
{
return 0;
}
@ -161,9 +164,9 @@ static inline void sysfs_remove_dir(struct kobject * k)
;
}
static inline int sysfs_rename_dir(struct kobject * k,
struct dentry *new_parent,
const char *new_name)
static inline int sysfs_rename_dir(struct kobject *kobj,
struct sysfs_dirent *new_parent_sd,
const char *new_name)
{
return 0;
}

10
lib/kobject.c
View File

@ -44,7 +44,7 @@ static int populate_dir(struct kobject * kobj)
return error;
}
static int create_dir(struct kobject * kobj, struct dentry *shadow_parent)
static int create_dir(struct kobject *kobj, struct sysfs_dirent *shadow_parent)
{
int error = 0;
if (kobject_name(kobj)) {
@ -162,7 +162,7 @@ static void unlink(struct kobject * kobj)
* @shadow_parent: sysfs directory to add to.
*/
int kobject_shadow_add(struct kobject * kobj, struct dentry *shadow_parent)
int kobject_shadow_add(struct kobject *kobj, struct sysfs_dirent *shadow_parent)
{
int error = 0;
struct kobject * parent;
@ -338,7 +338,7 @@ int kobject_rename(struct kobject * kobj, const char *new_name)
/* Note : if we want to send the new name alone, not the full path,
* we could probably use kobject_name(kobj); */
error = sysfs_rename_dir(kobj, kobj->parent->dentry, new_name);
error = sysfs_rename_dir(kobj, kobj->parent->sd, new_name);
/* This function is mostly/only used for network interface.
* Some hotplug package track interfaces by their name and
@ -361,8 +361,8 @@ int kobject_rename(struct kobject * kobj, const char *new_name)
* @new_name: object's new name
*/
int kobject_shadow_rename(struct kobject * kobj, struct dentry *new_parent,
const char *new_name)
int kobject_shadow_rename(struct kobject *kobj,
struct sysfs_dirent *new_parent, const char *new_name)
{
int error = 0;