#define rb_to_kn(X) rb_entry((X), struct kernfs_node, rb)
/**
- * sysfs_name_hash
+ * kernfs_name_hash
* @name: Null terminated string to hash
* @ns: Namespace tag to hash
*
* Returns 31 bit hash of ns + name (so it fits in an off_t )
*/
-static unsigned int sysfs_name_hash(const char *name, const void *ns)
+static unsigned int kernfs_name_hash(const char *name, const void *ns)
{
unsigned long hash = init_name_hash();
unsigned int len = strlen(name);
return hash;
}
-static int sysfs_name_compare(unsigned int hash, const char *name,
- const void *ns, const struct kernfs_node *kn)
+static int kernfs_name_compare(unsigned int hash, const char *name,
+ const void *ns, const struct kernfs_node *kn)
{
if (hash != kn->hash)
return hash - kn->hash;
return strcmp(name, kn->name);
}
-static int sysfs_sd_compare(const struct kernfs_node *left,
- const struct kernfs_node *right)
+static int kernfs_sd_compare(const struct kernfs_node *left,
+ const struct kernfs_node *right)
{
- return sysfs_name_compare(left->hash, left->name, left->ns, right);
+ return kernfs_name_compare(left->hash, left->name, left->ns, right);
}
/**
- * sysfs_link_sibling - link kernfs_node into sibling rbtree
+ * kernfs_link_sibling - link kernfs_node into sibling rbtree
* @kn: kernfs_node of interest
*
* Link @kn into its sibling rbtree which starts from
* RETURNS:
* 0 on susccess -EEXIST on failure.
*/
-static int sysfs_link_sibling(struct kernfs_node *kn)
+static int kernfs_link_sibling(struct kernfs_node *kn)
{
struct rb_node **node = &kn->parent->dir.children.rb_node;
struct rb_node *parent = NULL;
pos = rb_to_kn(*node);
parent = *node;
- result = sysfs_sd_compare(kn, pos);
+ result = kernfs_sd_compare(kn, pos);
if (result < 0)
node = &pos->rb.rb_left;
else if (result > 0)
}
/**
- * sysfs_unlink_sibling - unlink kernfs_node from sibling rbtree
+ * kernfs_unlink_sibling - unlink kernfs_node from sibling rbtree
* @kn: kernfs_node of interest
*
* Unlink @kn from its sibling rbtree which starts from
* Locking:
* mutex_lock(kernfs_mutex)
*/
-static void sysfs_unlink_sibling(struct kernfs_node *kn)
+static void kernfs_unlink_sibling(struct kernfs_node *kn)
{
if (kernfs_type(kn) == KERNFS_DIR)
kn->parent->dir.subdirs--;
}
/**
- * sysfs_get_active - get an active reference to kernfs_node
+ * kernfs_get_active - get an active reference to kernfs_node
* @kn: kernfs_node to get an active reference to
*
* Get an active reference of @kn. This function is noop if @kn
* RETURNS:
* Pointer to @kn on success, NULL on failure.
*/
-struct kernfs_node *sysfs_get_active(struct kernfs_node *kn)
+struct kernfs_node *kernfs_get_active(struct kernfs_node *kn)
{
if (unlikely(!kn))
return NULL;
}
/**
- * sysfs_put_active - put an active reference to kernfs_node
+ * kernfs_put_active - put an active reference to kernfs_node
* @kn: kernfs_node to put an active reference to
*
* Put an active reference to @kn. This function is noop if @kn
* is NULL.
*/
-void sysfs_put_active(struct kernfs_node *kn)
+void kernfs_put_active(struct kernfs_node *kn)
{
int v;
}
/**
- * sysfs_deactivate - deactivate kernfs_node
+ * kernfs_deactivate - deactivate kernfs_node
* @kn: kernfs_node to deactivate
*
* Deny new active references and drain existing ones.
*/
-static void sysfs_deactivate(struct kernfs_node *kn)
+static void kernfs_deactivate(struct kernfs_node *kn)
{
DECLARE_COMPLETION_ONSTACK(wait);
int v;
*/
parent = kn->parent;
- WARN(!(kn->flags & KERNFS_REMOVED),
- "sysfs: free using entry: %s/%s\n",
- parent ? parent->name : "", kn->name);
+ WARN(!(kn->flags & KERNFS_REMOVED), "kernfs: free using entry: %s/%s\n",
+ parent ? parent->name : "", kn->name);
if (kernfs_type(kn) == KERNFS_LINK)
kernfs_put(kn->symlink.target_kn);
}
EXPORT_SYMBOL_GPL(kernfs_put);
-static int sysfs_dentry_delete(const struct dentry *dentry)
+static int kernfs_dop_delete(const struct dentry *dentry)
{
struct kernfs_node *kn = dentry->d_fsdata;
return !(kn && !(kn->flags & KERNFS_REMOVED));
}
-static int sysfs_dentry_revalidate(struct dentry *dentry, unsigned int flags)
+static int kernfs_dop_revalidate(struct dentry *dentry, unsigned int flags)
{
struct kernfs_node *kn;
kn = dentry->d_fsdata;
mutex_lock(&kernfs_mutex);
- /* The sysfs dirent has been deleted */
+ /* The kernfs node has been deleted */
if (kn->flags & KERNFS_REMOVED)
goto out_bad;
- /* The sysfs dirent has been moved? */
+ /* The kernfs node has been moved? */
if (dentry->d_parent->d_fsdata != kn->parent)
goto out_bad;
- /* The sysfs dirent has been renamed */
+ /* The kernfs node has been renamed */
if (strcmp(dentry->d_name.name, kn->name) != 0)
goto out_bad;
- /* The sysfs dirent has been moved to a different namespace */
+ /* The kernfs node has been moved to a different namespace */
if (kn->parent && kernfs_ns_enabled(kn->parent) &&
kernfs_info(dentry->d_sb)->ns != kn->ns)
goto out_bad;
out_valid:
return 1;
out_bad:
- /* Remove the dentry from the dcache hashes.
+ /*
+ * Remove the dentry from the dcache hashes.
* If this is a deleted dentry we use d_drop instead of d_delete
- * so sysfs doesn't need to cope with negative dentries.
+ * so kernfs doesn't need to cope with negative dentries.
*
* If this is a dentry that has simply been renamed we
* use d_drop to remove it from the dcache lookup on its
return 0;
}
-static void sysfs_dentry_release(struct dentry *dentry)
+static void kernfs_dop_release(struct dentry *dentry)
{
kernfs_put(dentry->d_fsdata);
}
const struct dentry_operations kernfs_dops = {
- .d_revalidate = sysfs_dentry_revalidate,
- .d_delete = sysfs_dentry_delete,
- .d_release = sysfs_dentry_release,
+ .d_revalidate = kernfs_dop_revalidate,
+ .d_delete = kernfs_dop_delete,
+ .d_release = kernfs_dop_release,
};
-struct kernfs_node *sysfs_new_dirent(struct kernfs_root *root,
- const char *name, umode_t mode, int type)
+struct kernfs_node *kernfs_new_node(struct kernfs_root *root, const char *name,
+ umode_t mode, int type)
{
char *dup_name = NULL;
struct kernfs_node *kn;
}
/**
- * sysfs_addrm_start - prepare for kernfs_node add/remove
+ * kernfs_addrm_start - prepare for kernfs_node add/remove
* @acxt: pointer to kernfs_addrm_cxt to be used
*
* This function is called when the caller is about to add or remove
* Kernel thread context (may sleep). kernfs_mutex is locked on
* return.
*/
-void sysfs_addrm_start(struct kernfs_addrm_cxt *acxt)
+void kernfs_addrm_start(struct kernfs_addrm_cxt *acxt)
__acquires(kernfs_mutex)
{
memset(acxt, 0, sizeof(*acxt));
}
/**
- * sysfs_add_one - add kernfs_node to parent without warning
+ * kernfs_add_one - add kernfs_node to parent without warning
* @acxt: addrm context to use
* @kn: kernfs_node to be added
* @parent: the parent kernfs_node to add @kn to
* of the parent.
*
* This function should be called between calls to
- * sysfs_addrm_start() and sysfs_addrm_finish() and should be
- * passed the same @acxt as passed to sysfs_addrm_start().
+ * kernfs_addrm_start() and kernfs_addrm_finish() and should be passed
+ * the same @acxt as passed to kernfs_addrm_start().
*
* LOCKING:
- * Determined by sysfs_addrm_start().
+ * Determined by kernfs_addrm_start().
*
* RETURNS:
* 0 on success, -EEXIST if entry with the given name already
* exists.
*/
-int sysfs_add_one(struct kernfs_addrm_cxt *acxt, struct kernfs_node *kn,
+int kernfs_add_one(struct kernfs_addrm_cxt *acxt, struct kernfs_node *kn,
struct kernfs_node *parent)
{
bool has_ns = kernfs_ns_enabled(parent);
int ret;
if (has_ns != (bool)kn->ns) {
- WARN(1, KERN_WARNING "sysfs: ns %s in '%s' for '%s'\n",
+ WARN(1, KERN_WARNING "kernfs: ns %s in '%s' for '%s'\n",
has_ns ? "required" : "invalid", parent->name, kn->name);
return -EINVAL;
}
if (kernfs_type(parent) != KERNFS_DIR)
return -EINVAL;
- kn->hash = sysfs_name_hash(kn->name, kn->ns);
+ kn->hash = kernfs_name_hash(kn->name, kn->ns);
kn->parent = parent;
kernfs_get(parent);
- ret = sysfs_link_sibling(kn);
+ ret = kernfs_link_sibling(kn);
if (ret)
return ret;
}
/**
- * sysfs_remove_one - remove kernfs_node from parent
+ * kernfs_remove_one - remove kernfs_node from parent
* @acxt: addrm context to use
* @kn: kernfs_node to be removed
*
* directory. @kn is unlinked from the children list.
*
* This function should be called between calls to
- * sysfs_addrm_start() and sysfs_addrm_finish() and should be
- * passed the same @acxt as passed to sysfs_addrm_start().
+ * kernfs_addrm_start() and kernfs_addrm_finish() and should be
+ * passed the same @acxt as passed to kernfs_addrm_start().
*
* LOCKING:
- * Determined by sysfs_addrm_start().
+ * Determined by kernfs_addrm_start().
*/
-static void sysfs_remove_one(struct kernfs_addrm_cxt *acxt,
- struct kernfs_node *kn)
+static void kernfs_remove_one(struct kernfs_addrm_cxt *acxt,
+ struct kernfs_node *kn)
{
struct kernfs_iattrs *ps_iattr;
return;
if (kn->parent) {
- sysfs_unlink_sibling(kn);
+ kernfs_unlink_sibling(kn);
/* Update timestamps on the parent */
ps_iattr = kn->parent->iattr;
}
/**
- * sysfs_addrm_finish - finish up kernfs_node add/remove
+ * kernfs_addrm_finish - finish up kernfs_node add/remove
* @acxt: addrm context to finish up
*
* Finish up kernfs_node add/remove. Resources acquired by
- * sysfs_addrm_start() are released and removed kernfs_nodes are
+ * kernfs_addrm_start() are released and removed kernfs_nodes are
* cleaned up.
*
* LOCKING:
* kernfs_mutex is released.
*/
-void sysfs_addrm_finish(struct kernfs_addrm_cxt *acxt)
+void kernfs_addrm_finish(struct kernfs_addrm_cxt *acxt)
__releases(kernfs_mutex)
{
- /* release resources acquired by sysfs_addrm_start() */
+ /* release resources acquired by kernfs_addrm_start() */
mutex_unlock(&kernfs_mutex);
/* kill removed kernfs_nodes */
acxt->removed = kn->u.removed_list;
- sysfs_deactivate(kn);
- sysfs_unmap_bin_file(kn);
+ kernfs_deactivate(kn);
+ kernfs_unmap_bin_file(kn);
kernfs_put(kn);
}
}
lockdep_assert_held(&kernfs_mutex);
if (has_ns != (bool)ns) {
- WARN(1, KERN_WARNING "sysfs: ns %s in '%s' for '%s'\n",
+ WARN(1, KERN_WARNING "kernfs: ns %s in '%s' for '%s'\n",
has_ns ? "required" : "invalid", parent->name, name);
return NULL;
}
- hash = sysfs_name_hash(name, ns);
+ hash = kernfs_name_hash(name, ns);
while (node) {
struct kernfs_node *kn;
int result;
kn = rb_to_kn(node);
- result = sysfs_name_compare(hash, name, ns, kn);
+ result = kernfs_name_compare(hash, name, ns, kn);
if (result < 0)
node = node->rb_left;
else if (result > 0)
ida_init(&root->ino_ida);
- kn = sysfs_new_dirent(root, "", S_IFDIR | S_IRUGO | S_IXUGO, KERNFS_DIR);
+ kn = kernfs_new_node(root, "", S_IFDIR | S_IRUGO | S_IXUGO, KERNFS_DIR);
if (!kn) {
ida_destroy(&root->ino_ida);
kfree(root);
int rc;
/* allocate */
- kn = sysfs_new_dirent(kernfs_root(parent), name, mode, KERNFS_DIR);
+ kn = kernfs_new_node(kernfs_root(parent), name, mode, KERNFS_DIR);
if (!kn)
return ERR_PTR(-ENOMEM);
kn->priv = priv;
/* link in */
- sysfs_addrm_start(&acxt);
- rc = sysfs_add_one(&acxt, kn, parent);
- sysfs_addrm_finish(&acxt);
+ kernfs_addrm_start(&acxt);
+ rc = kernfs_add_one(&acxt, kn, parent);
+ kernfs_addrm_finish(&acxt);
if (!rc)
return kn;
return ERR_PTR(rc);
}
-static struct dentry *sysfs_lookup(struct inode *dir, struct dentry *dentry,
- unsigned int flags)
+static struct dentry *kernfs_iop_lookup(struct inode *dir,
+ struct dentry *dentry,
+ unsigned int flags)
{
struct dentry *ret = NULL;
struct kernfs_node *parent = dentry->d_parent->d_fsdata;
dentry->d_fsdata = kn;
/* attach dentry and inode */
- inode = sysfs_get_inode(dir->i_sb, kn);
+ inode = kernfs_get_inode(dir->i_sb, kn);
if (!inode) {
ret = ERR_PTR(-ENOMEM);
goto out_unlock;
}
const struct inode_operations kernfs_dir_iops = {
- .lookup = sysfs_lookup,
- .permission = sysfs_permission,
- .setattr = sysfs_setattr,
- .getattr = sysfs_getattr,
- .setxattr = sysfs_setxattr,
- .removexattr = sysfs_removexattr,
- .getxattr = sysfs_getxattr,
- .listxattr = sysfs_listxattr,
+ .lookup = kernfs_iop_lookup,
+ .permission = kernfs_iop_permission,
+ .setattr = kernfs_iop_setattr,
+ .getattr = kernfs_iop_getattr,
+ .setxattr = kernfs_iop_setxattr,
+ .removexattr = kernfs_iop_removexattr,
+ .getxattr = kernfs_iop_getxattr,
+ .listxattr = kernfs_iop_listxattr,
};
-static struct kernfs_node *sysfs_leftmost_descendant(struct kernfs_node *pos)
+static struct kernfs_node *kernfs_leftmost_descendant(struct kernfs_node *pos)
{
struct kernfs_node *last;
}
/**
- * sysfs_next_descendant_post - find the next descendant for post-order walk
+ * kernfs_next_descendant_post - find the next descendant for post-order walk
* @pos: the current position (%NULL to initiate traversal)
* @root: kernfs_node whose descendants to walk
*
* descendants. @root is included in the iteration and the last node to be
* visited.
*/
-static struct kernfs_node *sysfs_next_descendant_post(struct kernfs_node *pos,
- struct kernfs_node *root)
+static struct kernfs_node *kernfs_next_descendant_post(struct kernfs_node *pos,
+ struct kernfs_node *root)
{
struct rb_node *rbn;
/* if first iteration, visit leftmost descendant which may be root */
if (!pos)
- return sysfs_leftmost_descendant(root);
+ return kernfs_leftmost_descendant(root);
/* if we visited @root, we're done */
if (pos == root)
/* if there's an unvisited sibling, visit its leftmost descendant */
rbn = rb_next(&pos->rb);
if (rbn)
- return sysfs_leftmost_descendant(rb_to_kn(rbn));
+ return kernfs_leftmost_descendant(rb_to_kn(rbn));
/* no sibling left, visit parent */
return pos->parent;
if (!kn)
return;
- pr_debug("sysfs %s: removing\n", kn->name);
+ pr_debug("kernfs %s: removing\n", kn->name);
next = NULL;
do {
pos = next;
- next = sysfs_next_descendant_post(pos, kn);
+ next = kernfs_next_descendant_post(pos, kn);
if (pos)
- sysfs_remove_one(acxt, pos);
+ kernfs_remove_one(acxt, pos);
} while (next);
}
{
struct kernfs_addrm_cxt acxt;
- sysfs_addrm_start(&acxt);
+ kernfs_addrm_start(&acxt);
__kernfs_remove(&acxt, kn);
- sysfs_addrm_finish(&acxt);
+ kernfs_addrm_finish(&acxt);
}
/**
struct kernfs_node *kn;
if (!parent) {
- WARN(1, KERN_WARNING "sysfs: can not remove '%s', no directory\n",
+ WARN(1, KERN_WARNING "kernfs: can not remove '%s', no directory\n",
name);
return -ENOENT;
}
- sysfs_addrm_start(&acxt);
+ kernfs_addrm_start(&acxt);
kn = kernfs_find_ns(parent, name, ns);
if (kn)
__kernfs_remove(&acxt, kn);
- sysfs_addrm_finish(&acxt);
+ kernfs_addrm_finish(&acxt);
if (kn)
return 0;
/*
* Move to the appropriate place in the appropriate directories rbtree.
*/
- sysfs_unlink_sibling(kn);
+ kernfs_unlink_sibling(kn);
kernfs_get(new_parent);
kernfs_put(kn->parent);
kn->ns = new_ns;
- kn->hash = sysfs_name_hash(kn->name, kn->ns);
+ kn->hash = kernfs_name_hash(kn->name, kn->ns);
kn->parent = new_parent;
- sysfs_link_sibling(kn);
+ kernfs_link_sibling(kn);
error = 0;
out:
return (kn->mode >> 12) & 15;
}
-static int sysfs_dir_release(struct inode *inode, struct file *filp)
+static int kernfs_dir_fop_release(struct inode *inode, struct file *filp)
{
kernfs_put(filp->private_data);
return 0;
}
-static struct kernfs_node *sysfs_dir_pos(const void *ns,
+static struct kernfs_node *kernfs_dir_pos(const void *ns,
struct kernfs_node *parent, loff_t hash, struct kernfs_node *pos)
{
if (pos) {
return pos;
}
-static struct kernfs_node *sysfs_dir_next_pos(const void *ns,
+static struct kernfs_node *kernfs_dir_next_pos(const void *ns,
struct kernfs_node *parent, ino_t ino, struct kernfs_node *pos)
{
- pos = sysfs_dir_pos(ns, parent, ino, pos);
+ pos = kernfs_dir_pos(ns, parent, ino, pos);
if (pos)
do {
struct rb_node *node = rb_next(&pos->rb);
return pos;
}
-static int sysfs_readdir(struct file *file, struct dir_context *ctx)
+static int kernfs_fop_readdir(struct file *file, struct dir_context *ctx)
{
struct dentry *dentry = file->f_path.dentry;
struct kernfs_node *parent = dentry->d_fsdata;
if (kernfs_ns_enabled(parent))
ns = kernfs_info(dentry->d_sb)->ns;
- for (pos = sysfs_dir_pos(ns, parent, ctx->pos, pos);
+ for (pos = kernfs_dir_pos(ns, parent, ctx->pos, pos);
pos;
- pos = sysfs_dir_next_pos(ns, parent, ctx->pos, pos)) {
+ pos = kernfs_dir_next_pos(ns, parent, ctx->pos, pos)) {
const char *name = pos->name;
unsigned int type = dt_type(pos);
int len = strlen(name);
return 0;
}
-static loff_t sysfs_dir_llseek(struct file *file, loff_t offset, int whence)
+static loff_t kernfs_dir_fop_llseek(struct file *file, loff_t offset,
+ int whence)
{
struct inode *inode = file_inode(file);
loff_t ret;
const struct file_operations kernfs_dir_fops = {
.read = generic_read_dir,
- .iterate = sysfs_readdir,
- .release = sysfs_dir_release,
- .llseek = sysfs_dir_llseek,
+ .iterate = kernfs_fop_readdir,
+ .release = kernfs_dir_fop_release,
+ .llseek = kernfs_dir_fop_llseek,
};
* the ops aren't called concurrently for the same open file.
*/
mutex_lock(&of->mutex);
- if (!sysfs_get_active(of->kn))
+ if (!kernfs_get_active(of->kn))
return ERR_PTR(-ENODEV);
ops = kernfs_ops(of->kn);
if (ops->seq_stop)
ops->seq_stop(sf, v);
- sysfs_put_active(of->kn);
+ kernfs_put_active(of->kn);
mutex_unlock(&of->mutex);
}
* the ops aren't called concurrently for the same open file.
*/
mutex_lock(&of->mutex);
- if (!sysfs_get_active(of->kn)) {
+ if (!kernfs_get_active(of->kn)) {
len = -ENODEV;
mutex_unlock(&of->mutex);
goto out_free;
else
len = -EINVAL;
- sysfs_put_active(of->kn);
+ kernfs_put_active(of->kn);
mutex_unlock(&of->mutex);
if (len < 0)
}
/**
- * kernfs_file_read - kernfs vfs read callback
+ * kernfs_fop_read - kernfs vfs read callback
* @file: file pointer
* @user_buf: data to write
* @count: number of bytes
* @ppos: starting offset
*/
-static ssize_t kernfs_file_read(struct file *file, char __user *user_buf,
- size_t count, loff_t *ppos)
+static ssize_t kernfs_fop_read(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
{
struct kernfs_open_file *of = kernfs_of(file);
}
/**
- * kernfs_file_write - kernfs vfs write callback
+ * kernfs_fop_write - kernfs vfs write callback
* @file: file pointer
* @user_buf: data to write
* @count: number of bytes
* modify only the the value you're changing, then write entire buffer
* back.
*/
-static ssize_t kernfs_file_write(struct file *file, const char __user *user_buf,
- size_t count, loff_t *ppos)
+static ssize_t kernfs_fop_write(struct file *file, const char __user *user_buf,
+ size_t count, loff_t *ppos)
{
struct kernfs_open_file *of = kernfs_of(file);
ssize_t len = min_t(size_t, count, PAGE_SIZE);
* the ops aren't called concurrently for the same open file.
*/
mutex_lock(&of->mutex);
- if (!sysfs_get_active(of->kn)) {
+ if (!kernfs_get_active(of->kn)) {
mutex_unlock(&of->mutex);
len = -ENODEV;
goto out_free;
else
len = -EINVAL;
- sysfs_put_active(of->kn);
+ kernfs_put_active(of->kn);
mutex_unlock(&of->mutex);
if (len > 0)
if (!of->vm_ops)
return;
- if (!sysfs_get_active(of->kn))
+ if (!kernfs_get_active(of->kn))
return;
if (of->vm_ops->open)
of->vm_ops->open(vma);
- sysfs_put_active(of->kn);
+ kernfs_put_active(of->kn);
}
static int kernfs_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
if (!of->vm_ops)
return VM_FAULT_SIGBUS;
- if (!sysfs_get_active(of->kn))
+ if (!kernfs_get_active(of->kn))
return VM_FAULT_SIGBUS;
ret = VM_FAULT_SIGBUS;
if (of->vm_ops->fault)
ret = of->vm_ops->fault(vma, vmf);
- sysfs_put_active(of->kn);
+ kernfs_put_active(of->kn);
return ret;
}
if (!of->vm_ops)
return VM_FAULT_SIGBUS;
- if (!sysfs_get_active(of->kn))
+ if (!kernfs_get_active(of->kn))
return VM_FAULT_SIGBUS;
ret = 0;
else
file_update_time(file);
- sysfs_put_active(of->kn);
+ kernfs_put_active(of->kn);
return ret;
}
if (!of->vm_ops)
return -EINVAL;
- if (!sysfs_get_active(of->kn))
+ if (!kernfs_get_active(of->kn))
return -EINVAL;
ret = -EINVAL;
if (of->vm_ops->access)
ret = of->vm_ops->access(vma, addr, buf, len, write);
- sysfs_put_active(of->kn);
+ kernfs_put_active(of->kn);
return ret;
}
if (!of->vm_ops)
return 0;
- if (!sysfs_get_active(of->kn))
+ if (!kernfs_get_active(of->kn))
return -EINVAL;
ret = 0;
if (of->vm_ops->set_policy)
ret = of->vm_ops->set_policy(vma, new);
- sysfs_put_active(of->kn);
+ kernfs_put_active(of->kn);
return ret;
}
if (!of->vm_ops)
return vma->vm_policy;
- if (!sysfs_get_active(of->kn))
+ if (!kernfs_get_active(of->kn))
return vma->vm_policy;
pol = vma->vm_policy;
if (of->vm_ops->get_policy)
pol = of->vm_ops->get_policy(vma, addr);
- sysfs_put_active(of->kn);
+ kernfs_put_active(of->kn);
return pol;
}
if (!of->vm_ops)
return 0;
- if (!sysfs_get_active(of->kn))
+ if (!kernfs_get_active(of->kn))
return 0;
ret = 0;
if (of->vm_ops->migrate)
ret = of->vm_ops->migrate(vma, from, to, flags);
- sysfs_put_active(of->kn);
+ kernfs_put_active(of->kn);
return ret;
}
#endif
#endif
};
-static int kernfs_file_mmap(struct file *file, struct vm_area_struct *vma)
+static int kernfs_fop_mmap(struct file *file, struct vm_area_struct *vma)
{
struct kernfs_open_file *of = kernfs_of(file);
const struct kernfs_ops *ops;
mutex_lock(&of->mutex);
rc = -ENODEV;
- if (!sysfs_get_active(of->kn))
+ if (!kernfs_get_active(of->kn))
goto out_unlock;
ops = kernfs_ops(of->kn);
of->vm_ops = vma->vm_ops;
vma->vm_ops = &kernfs_vm_ops;
out_put:
- sysfs_put_active(of->kn);
+ kernfs_put_active(of->kn);
out_unlock:
mutex_unlock(&of->mutex);
}
/**
- * sysfs_get_open_dirent - get or create kernfs_open_node
+ * kernfs_get_open_node - get or create kernfs_open_node
* @kn: target kernfs_node
* @of: kernfs_open_file for this instance of open
*
* RETURNS:
* 0 on success, -errno on failure.
*/
-static int sysfs_get_open_dirent(struct kernfs_node *kn,
- struct kernfs_open_file *of)
+static int kernfs_get_open_node(struct kernfs_node *kn,
+ struct kernfs_open_file *of)
{
struct kernfs_open_node *on, *new_on = NULL;
}
/**
- * sysfs_put_open_dirent - put kernfs_open_node
+ * kernfs_put_open_node - put kernfs_open_node
* @kn: target kernfs_nodet
* @of: associated kernfs_open_file
*
* LOCKING:
* None.
*/
-static void sysfs_put_open_dirent(struct kernfs_node *kn,
- struct kernfs_open_file *of)
+static void kernfs_put_open_node(struct kernfs_node *kn,
+ struct kernfs_open_file *of)
{
struct kernfs_open_node *on = kn->attr.open;
unsigned long flags;
kfree(on);
}
-static int kernfs_file_open(struct inode *inode, struct file *file)
+static int kernfs_fop_open(struct inode *inode, struct file *file)
{
struct kernfs_node *kn = file->f_path.dentry->d_fsdata;
const struct kernfs_ops *ops;
bool has_read, has_write, has_mmap;
int error = -EACCES;
- if (!sysfs_get_active(kn))
+ if (!kernfs_get_active(kn))
return -ENODEV;
ops = kernfs_ops(kn);
if (file->f_mode & FMODE_WRITE)
file->f_mode |= FMODE_PWRITE;
- /* make sure we have open dirent struct */
- error = sysfs_get_open_dirent(kn, of);
+ /* make sure we have open node struct */
+ error = kernfs_get_open_node(kn, of);
if (error)
goto err_close;
/* open succeeded, put active references */
- sysfs_put_active(kn);
+ kernfs_put_active(kn);
return 0;
err_close:
err_free:
kfree(of);
err_out:
- sysfs_put_active(kn);
+ kernfs_put_active(kn);
return error;
}
-static int kernfs_file_release(struct inode *inode, struct file *filp)
+static int kernfs_fop_release(struct inode *inode, struct file *filp)
{
struct kernfs_node *kn = filp->f_path.dentry->d_fsdata;
struct kernfs_open_file *of = kernfs_of(filp);
- sysfs_put_open_dirent(kn, of);
+ kernfs_put_open_node(kn, of);
seq_release(inode, filp);
kfree(of);
return 0;
}
-void sysfs_unmap_bin_file(struct kernfs_node *kn)
+void kernfs_unmap_bin_file(struct kernfs_node *kn)
{
struct kernfs_open_node *on;
struct kernfs_open_file *of;
}
mutex_unlock(&kernfs_open_file_mutex);
- sysfs_put_open_dirent(kn, NULL);
+ kernfs_put_open_node(kn, NULL);
}
-/* Sysfs attribute files are pollable. The idea is that you read
+/*
+ * Kernfs attribute files are pollable. The idea is that you read
* the content and then you use 'poll' or 'select' to wait for
* the content to change. When the content changes (assuming the
* manager for the kobject supports notification), poll will
* to see if it supports poll (Neither 'poll' nor 'select' return
* an appropriate error code). When in doubt, set a suitable timeout value.
*/
-static unsigned int kernfs_file_poll(struct file *filp, poll_table *wait)
+static unsigned int kernfs_fop_poll(struct file *filp, poll_table *wait)
{
struct kernfs_open_file *of = kernfs_of(filp);
struct kernfs_node *kn = filp->f_path.dentry->d_fsdata;
struct kernfs_open_node *on = kn->attr.open;
/* need parent for the kobj, grab both */
- if (!sysfs_get_active(kn))
+ if (!kernfs_get_active(kn))
goto trigger;
poll_wait(filp, &on->poll, wait);
- sysfs_put_active(kn);
+ kernfs_put_active(kn);
if (of->event != atomic_read(&on->event))
goto trigger;
EXPORT_SYMBOL_GPL(kernfs_notify);
const struct file_operations kernfs_file_fops = {
- .read = kernfs_file_read,
- .write = kernfs_file_write,
+ .read = kernfs_fop_read,
+ .write = kernfs_fop_write,
.llseek = generic_file_llseek,
- .mmap = kernfs_file_mmap,
- .open = kernfs_file_open,
- .release = kernfs_file_release,
- .poll = kernfs_file_poll,
+ .mmap = kernfs_fop_mmap,
+ .open = kernfs_fop_open,
+ .release = kernfs_fop_release,
+ .poll = kernfs_fop_poll,
};
/**
struct kernfs_node *kn;
int rc;
- kn = sysfs_new_dirent(kernfs_root(parent), name,
- (mode & S_IALLUGO) | S_IFREG, KERNFS_FILE);
+ kn = kernfs_new_node(kernfs_root(parent), name,
+ (mode & S_IALLUGO) | S_IFREG, KERNFS_FILE);
if (!kn)
return ERR_PTR(-ENOMEM);
if (ops->mmap)
kn->flags |= KERNFS_HAS_MMAP;
- sysfs_addrm_start(&acxt);
- rc = sysfs_add_one(&acxt, kn, parent);
- sysfs_addrm_finish(&acxt);
+ kernfs_addrm_start(&acxt);
+ rc = kernfs_add_one(&acxt, kn, parent);
+ kernfs_addrm_finish(&acxt);
if (rc) {
kernfs_put(kn);
};
static const struct inode_operations kernfs_iops = {
- .permission = sysfs_permission,
- .setattr = sysfs_setattr,
- .getattr = sysfs_getattr,
- .setxattr = sysfs_setxattr,
- .removexattr = sysfs_removexattr,
- .getxattr = sysfs_getxattr,
- .listxattr = sysfs_listxattr,
+ .permission = kernfs_iop_permission,
+ .setattr = kernfs_iop_setattr,
+ .getattr = kernfs_iop_getattr,
+ .setxattr = kernfs_iop_setxattr,
+ .removexattr = kernfs_iop_removexattr,
+ .getxattr = kernfs_iop_getxattr,
+ .listxattr = kernfs_iop_listxattr,
};
-void __init sysfs_inode_init(void)
+void __init kernfs_inode_init(void)
{
if (bdi_init(&kernfs_bdi))
panic("failed to init kernfs_bdi");
return ret;
}
-int sysfs_setattr(struct dentry *dentry, struct iattr *iattr)
+int kernfs_iop_setattr(struct dentry *dentry, struct iattr *iattr)
{
struct inode *inode = dentry->d_inode;
struct kernfs_node *kn = dentry->d_fsdata;
return error;
}
-static int sysfs_sd_setsecdata(struct kernfs_node *kn, void **secdata,
- u32 *secdata_len)
+static int kernfs_node_setsecdata(struct kernfs_node *kn, void **secdata,
+ u32 *secdata_len)
{
struct kernfs_iattrs *attrs;
void *old_secdata;
return 0;
}
-int sysfs_setxattr(struct dentry *dentry, const char *name, const void *value,
- size_t size, int flags)
+int kernfs_iop_setxattr(struct dentry *dentry, const char *name,
+ const void *value, size_t size, int flags)
{
struct kernfs_node *kn = dentry->d_fsdata;
struct kernfs_iattrs *attrs;
return error;
mutex_lock(&kernfs_mutex);
- error = sysfs_sd_setsecdata(kn, &secdata, &secdata_len);
+ error = kernfs_node_setsecdata(kn, &secdata, &secdata_len);
mutex_unlock(&kernfs_mutex);
if (secdata)
return -EINVAL;
}
-int sysfs_removexattr(struct dentry *dentry, const char *name)
+int kernfs_iop_removexattr(struct dentry *dentry, const char *name)
{
struct kernfs_node *kn = dentry->d_fsdata;
struct kernfs_iattrs *attrs;
return simple_xattr_remove(&attrs->xattrs, name);
}
-ssize_t sysfs_getxattr(struct dentry *dentry, const char *name, void *buf,
- size_t size)
+ssize_t kernfs_iop_getxattr(struct dentry *dentry, const char *name, void *buf,
+ size_t size)
{
struct kernfs_node *kn = dentry->d_fsdata;
struct kernfs_iattrs *attrs;
return simple_xattr_get(&attrs->xattrs, name, buf, size);
}
-ssize_t sysfs_listxattr(struct dentry *dentry, char *buf, size_t size)
+ssize_t kernfs_iop_listxattr(struct dentry *dentry, char *buf, size_t size)
{
struct kernfs_node *kn = dentry->d_fsdata;
struct kernfs_iattrs *attrs;
inode->i_ctime = iattr->ia_ctime;
}
-static void sysfs_refresh_inode(struct kernfs_node *kn, struct inode *inode)
+static void kernfs_refresh_inode(struct kernfs_node *kn, struct inode *inode)
{
struct kernfs_iattrs *attrs = kn->iattr;
set_nlink(inode, kn->dir.subdirs + 2);
}
-int sysfs_getattr(struct vfsmount *mnt, struct dentry *dentry,
- struct kstat *stat)
+int kernfs_iop_getattr(struct vfsmount *mnt, struct dentry *dentry,
+ struct kstat *stat)
{
struct kernfs_node *kn = dentry->d_fsdata;
struct inode *inode = dentry->d_inode;
mutex_lock(&kernfs_mutex);
- sysfs_refresh_inode(kn, inode);
+ kernfs_refresh_inode(kn, inode);
mutex_unlock(&kernfs_mutex);
generic_fillattr(inode, stat);
return 0;
}
-static void sysfs_init_inode(struct kernfs_node *kn, struct inode *inode)
+static void kernfs_init_inode(struct kernfs_node *kn, struct inode *inode)
{
kernfs_get(kn);
inode->i_private = kn;
inode->i_op = &kernfs_iops;
set_default_inode_attr(inode, kn->mode);
- sysfs_refresh_inode(kn, inode);
+ kernfs_refresh_inode(kn, inode);
/* initialize inode according to type */
switch (kernfs_type(kn)) {
}
/**
- * sysfs_get_inode - get inode for kernfs_node
+ * kernfs_get_inode - get inode for kernfs_node
* @sb: super block
* @kn: kernfs_node to allocate inode for
*
* RETURNS:
* Pointer to allocated inode on success, NULL on failure.
*/
-struct inode *sysfs_get_inode(struct super_block *sb, struct kernfs_node *kn)
+struct inode *kernfs_get_inode(struct super_block *sb, struct kernfs_node *kn)
{
struct inode *inode;
inode = iget_locked(sb, kn->ino);
if (inode && (inode->i_state & I_NEW))
- sysfs_init_inode(kn, inode);
+ kernfs_init_inode(kn, inode);
return inode;
}
/*
- * The kernfs_node serves as both an inode and a directory entry for sysfs.
- * To prevent the sysfs inode numbers from being freed prematurely we take
- * a reference to kernfs_node from the sysfs inode. A
+ * The kernfs_node serves as both an inode and a directory entry for
+ * kernfs. To prevent the kernfs inode numbers from being freed
+ * prematurely we take a reference to kernfs_node from the kernfs inode. A
* super_operations.evict_inode() implementation is needed to drop that
* reference upon inode destruction.
*/
-void sysfs_evict_inode(struct inode *inode)
+void kernfs_evict_inode(struct inode *inode)
{
struct kernfs_node *kn = inode->i_private;
kernfs_put(kn);
}
-int sysfs_permission(struct inode *inode, int mask)
+int kernfs_iop_permission(struct inode *inode, int mask)
{
struct kernfs_node *kn;
kn = inode->i_private;
mutex_lock(&kernfs_mutex);
- sysfs_refresh_inode(kn, inode);
+ kernfs_refresh_inode(kn, inode);
mutex_unlock(&kernfs_mutex);
return generic_permission(inode, mask);
/*
* inode.c
*/
-struct inode *sysfs_get_inode(struct super_block *sb, struct kernfs_node *kn);
-void sysfs_evict_inode(struct inode *inode);
-int sysfs_permission(struct inode *inode, int mask);
-int sysfs_setattr(struct dentry *dentry, struct iattr *iattr);
-int sysfs_getattr(struct vfsmount *mnt, struct dentry *dentry,
- struct kstat *stat);
-int sysfs_setxattr(struct dentry *dentry, const char *name, const void *value,
- size_t size, int flags);
-int sysfs_removexattr(struct dentry *dentry, const char *name);
-ssize_t sysfs_getxattr(struct dentry *dentry, const char *name, void *buf,
- size_t size);
-ssize_t sysfs_listxattr(struct dentry *dentry, char *buf, size_t size);
-void sysfs_inode_init(void);
+struct inode *kernfs_get_inode(struct super_block *sb, struct kernfs_node *kn);
+void kernfs_evict_inode(struct inode *inode);
+int kernfs_iop_permission(struct inode *inode, int mask);
+int kernfs_iop_setattr(struct dentry *dentry, struct iattr *iattr);
+int kernfs_iop_getattr(struct vfsmount *mnt, struct dentry *dentry,
+ struct kstat *stat);
+int kernfs_iop_setxattr(struct dentry *dentry, const char *name, const void *value,
+ size_t size, int flags);
+int kernfs_iop_removexattr(struct dentry *dentry, const char *name);
+ssize_t kernfs_iop_getxattr(struct dentry *dentry, const char *name, void *buf,
+ size_t size);
+ssize_t kernfs_iop_listxattr(struct dentry *dentry, char *buf, size_t size);
+void kernfs_inode_init(void);
/*
* dir.c
extern const struct file_operations kernfs_dir_fops;
extern const struct inode_operations kernfs_dir_iops;
-struct kernfs_node *sysfs_get_active(struct kernfs_node *kn);
-void sysfs_put_active(struct kernfs_node *kn);
-void sysfs_addrm_start(struct kernfs_addrm_cxt *acxt);
-int sysfs_add_one(struct kernfs_addrm_cxt *acxt, struct kernfs_node *kn,
- struct kernfs_node *parent);
-void sysfs_addrm_finish(struct kernfs_addrm_cxt *acxt);
-struct kernfs_node *sysfs_new_dirent(struct kernfs_root *root,
- const char *name, umode_t mode, int type);
+struct kernfs_node *kernfs_get_active(struct kernfs_node *kn);
+void kernfs_put_active(struct kernfs_node *kn);
+void kernfs_addrm_start(struct kernfs_addrm_cxt *acxt);
+int kernfs_add_one(struct kernfs_addrm_cxt *acxt, struct kernfs_node *kn,
+ struct kernfs_node *parent);
+void kernfs_addrm_finish(struct kernfs_addrm_cxt *acxt);
+struct kernfs_node *kernfs_new_node(struct kernfs_root *root, const char *name,
+ umode_t mode, int type);
/*
* file.c
*/
extern const struct file_operations kernfs_file_fops;
-void sysfs_unmap_bin_file(struct kernfs_node *kn);
+void kernfs_unmap_bin_file(struct kernfs_node *kn);
/*
* symlink.c
static const struct super_operations kernfs_sops = {
.statfs = simple_statfs,
.drop_inode = generic_delete_inode,
- .evict_inode = sysfs_evict_inode,
+ .evict_inode = kernfs_evict_inode,
};
-static int sysfs_fill_super(struct super_block *sb)
+static int kernfs_fill_super(struct super_block *sb)
{
struct kernfs_super_info *info = kernfs_info(sb);
struct inode *inode;
/* get root inode, initialize and unlock it */
mutex_lock(&kernfs_mutex);
- inode = sysfs_get_inode(sb, info->root->kn);
+ inode = kernfs_get_inode(sb, info->root->kn);
mutex_unlock(&kernfs_mutex);
if (!inode) {
- pr_debug("sysfs: could not get root inode\n");
+ pr_debug("kernfs: could not get root inode\n");
return -ENOMEM;
}
return 0;
}
-static int sysfs_test_super(struct super_block *sb, void *data)
+static int kernfs_test_super(struct super_block *sb, void *data)
{
struct kernfs_super_info *sb_info = kernfs_info(sb);
struct kernfs_super_info *info = data;
return sb_info->root == info->root && sb_info->ns == info->ns;
}
-static int sysfs_set_super(struct super_block *sb, void *data)
+static int kernfs_set_super(struct super_block *sb, void *data)
{
int error;
error = set_anon_super(sb, data);
info->root = root;
info->ns = ns;
- sb = sget(fs_type, sysfs_test_super, sysfs_set_super, flags, info);
+ sb = sget(fs_type, kernfs_test_super, kernfs_set_super, flags, info);
if (IS_ERR(sb) || sb->s_fs_info != info)
kfree(info);
if (IS_ERR(sb))
return ERR_CAST(sb);
if (!sb->s_root) {
- error = sysfs_fill_super(sb);
+ error = kernfs_fill_super(sb);
if (error) {
deactivate_locked_super(sb);
return ERR_PTR(error);
kernfs_node_cache = kmem_cache_create("kernfs_node_cache",
sizeof(struct kernfs_node),
0, SLAB_PANIC, NULL);
- sysfs_inode_init();
+ kernfs_inode_init();
}
struct kernfs_addrm_cxt acxt;
int error;
- kn = sysfs_new_dirent(kernfs_root(parent), name, S_IFLNK|S_IRWXUGO,
- KERNFS_LINK);
+ kn = kernfs_new_node(kernfs_root(parent), name, S_IFLNK|S_IRWXUGO,
+ KERNFS_LINK);
if (!kn)
return ERR_PTR(-ENOMEM);
kn->symlink.target_kn = target;
kernfs_get(target); /* ref owned by symlink */
- sysfs_addrm_start(&acxt);
- error = sysfs_add_one(&acxt, kn, parent);
- sysfs_addrm_finish(&acxt);
+ kernfs_addrm_start(&acxt);
+ error = kernfs_add_one(&acxt, kn, parent);
+ kernfs_addrm_finish(&acxt);
if (!error)
return kn;
return ERR_PTR(error);
}
-static int sysfs_get_target_path(struct kernfs_node *parent,
- struct kernfs_node *target, char *path)
+static int kernfs_get_target_path(struct kernfs_node *parent,
+ struct kernfs_node *target, char *path)
{
struct kernfs_node *base, *kn;
char *s = path;
return 0;
}
-static int sysfs_getlink(struct dentry *dentry, char *path)
+static int kernfs_getlink(struct dentry *dentry, char *path)
{
struct kernfs_node *kn = dentry->d_fsdata;
struct kernfs_node *parent = kn->parent;
int error;
mutex_lock(&kernfs_mutex);
- error = sysfs_get_target_path(parent, target, path);
+ error = kernfs_get_target_path(parent, target, path);
mutex_unlock(&kernfs_mutex);
return error;
}
-static void *sysfs_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *kernfs_iop_follow_link(struct dentry *dentry, struct nameidata *nd)
{
int error = -ENOMEM;
unsigned long page = get_zeroed_page(GFP_KERNEL);
if (page) {
- error = sysfs_getlink(dentry, (char *) page);
+ error = kernfs_getlink(dentry, (char *) page);
if (error < 0)
free_page((unsigned long)page);
}
return NULL;
}
-static void sysfs_put_link(struct dentry *dentry, struct nameidata *nd,
- void *cookie)
+static void kernfs_iop_put_link(struct dentry *dentry, struct nameidata *nd,
+ void *cookie)
{
char *page = nd_get_link(nd);
if (!IS_ERR(page))
}
const struct inode_operations kernfs_symlink_iops = {
- .setxattr = sysfs_setxattr,
- .removexattr = sysfs_removexattr,
- .getxattr = sysfs_getxattr,
- .listxattr = sysfs_listxattr,
+ .setxattr = kernfs_iop_setxattr,
+ .removexattr = kernfs_iop_removexattr,
+ .getxattr = kernfs_iop_getxattr,
+ .listxattr = kernfs_iop_listxattr,
.readlink = generic_readlink,
- .follow_link = sysfs_follow_link,
- .put_link = sysfs_put_link,
- .setattr = sysfs_setattr,
- .getattr = sysfs_getattr,
- .permission = sysfs_permission,
+ .follow_link = kernfs_iop_follow_link,
+ .put_link = kernfs_iop_put_link,
+ .setattr = kernfs_iop_setattr,
+ .getattr = kernfs_iop_getattr,
+ .permission = kernfs_iop_permission,
};
projects / openwrt / staging / blogic.git / commitdiff