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Date: Mon, 3 Feb 2014 14:09:09 -0500
From: Tejun Heo <tj@...nel.org>
To: gregkh@...uxfoundation.org
Cc: linux-kernel@...r.kernel.org, Tejun Heo <tj@...nel.org>
Subject: [PATCH 02/10] kernfs: rename kernfs_dir_ops to kernfs_syscall_ops
We're gonna need non-dir syscall callbacks, which will make dir_ops a
misnomer. Let's rename kernfs_dir_ops to kernfs_syscall_ops.
This is pure rename.
Signed-off-by: Tejun Heo <tj@...nel.org>
---
fs/kernfs/dir.c | 25 +++++++++++++------------
include/linux/kernfs.h | 18 +++++++++---------
2 files changed, 22 insertions(+), 21 deletions(-)
diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c
index bfbfb48..f58d2f1 100644
--- a/fs/kernfs/dir.c
+++ b/fs/kernfs/dir.c
@@ -527,13 +527,14 @@ EXPORT_SYMBOL_GPL(kernfs_find_and_get_ns);
/**
* kernfs_create_root - create a new kernfs hierarchy
- * @kdops: optional directory syscall operations for the hierarchy
+ * @scops: optional syscall operations for the hierarchy
* @priv: opaque data associated with the new directory
*
* Returns the root of the new hierarchy on success, ERR_PTR() value on
* failure.
*/
-struct kernfs_root *kernfs_create_root(struct kernfs_dir_ops *kdops, void *priv)
+struct kernfs_root *kernfs_create_root(struct kernfs_syscall_ops *scops,
+ void *priv)
{
struct kernfs_root *root;
struct kernfs_node *kn;
@@ -556,7 +557,7 @@ struct kernfs_root *kernfs_create_root(struct kernfs_dir_ops *kdops, void *priv)
kn->priv = priv;
kn->dir.root = root;
- root->dir_ops = kdops;
+ root->syscall_ops = scops;
root->kn = kn;
init_waitqueue_head(&root->deactivate_waitq);
@@ -653,16 +654,16 @@ static int kernfs_iop_mkdir(struct inode *dir, struct dentry *dentry,
umode_t mode)
{
struct kernfs_node *parent = dir->i_private;
- struct kernfs_dir_ops *kdops = kernfs_root(parent)->dir_ops;
+ struct kernfs_syscall_ops *scops = kernfs_root(parent)->syscall_ops;
int ret;
- if (!kdops || !kdops->mkdir)
+ if (!scops || !scops->mkdir)
return -EPERM;
if (!kernfs_get_active(parent))
return -ENODEV;
- ret = kdops->mkdir(parent, dentry->d_name.name, mode);
+ ret = scops->mkdir(parent, dentry->d_name.name, mode);
kernfs_put_active(parent);
return ret;
@@ -671,16 +672,16 @@ static int kernfs_iop_mkdir(struct inode *dir, struct dentry *dentry,
static int kernfs_iop_rmdir(struct inode *dir, struct dentry *dentry)
{
struct kernfs_node *kn = dentry->d_fsdata;
- struct kernfs_dir_ops *kdops = kernfs_root(kn)->dir_ops;
+ struct kernfs_syscall_ops *scops = kernfs_root(kn)->syscall_ops;
int ret;
- if (!kdops || !kdops->rmdir)
+ if (!scops || !scops->rmdir)
return -EPERM;
if (!kernfs_get_active(kn))
return -ENODEV;
- ret = kdops->rmdir(kn);
+ ret = scops->rmdir(kn);
kernfs_put_active(kn);
return ret;
@@ -691,10 +692,10 @@ static int kernfs_iop_rename(struct inode *old_dir, struct dentry *old_dentry,
{
struct kernfs_node *kn = old_dentry->d_fsdata;
struct kernfs_node *new_parent = new_dir->i_private;
- struct kernfs_dir_ops *kdops = kernfs_root(kn)->dir_ops;
+ struct kernfs_syscall_ops *scops = kernfs_root(kn)->syscall_ops;
int ret;
- if (!kdops || !kdops->rename)
+ if (!scops || !scops->rename)
return -EPERM;
if (!kernfs_get_active(kn))
@@ -705,7 +706,7 @@ static int kernfs_iop_rename(struct inode *old_dir, struct dentry *old_dentry,
return -ENODEV;
}
- ret = kdops->rename(kn, new_parent, new_dentry->d_name.name);
+ ret = scops->rename(kn, new_parent, new_dentry->d_name.name);
kernfs_put_active(new_parent);
kernfs_put_active(kn);
diff --git a/include/linux/kernfs.h b/include/linux/kernfs.h
index 58a131d..5ddc474 100644
--- a/include/linux/kernfs.h
+++ b/include/linux/kernfs.h
@@ -108,13 +108,13 @@ struct kernfs_node {
};
/*
- * kernfs_dir_ops may be specified on kernfs_create_root() to support
- * directory manipulation syscalls. These optional callbacks are invoked
- * on the matching syscalls and can perform any kernfs operations which
- * don't necessarily have to be the exact operation requested. An active
- * reference is held for each kernfs_node parameter.
+ * kernfs_syscall_ops may be specified on kernfs_create_root() to support
+ * syscalls. These optional callbacks are invoked on the matching syscalls
+ * and can perform any kernfs operations which don't necessarily have to be
+ * the exact operation requested. An active reference is held for each
+ * kernfs_node parameter.
*/
-struct kernfs_dir_ops {
+struct kernfs_syscall_ops {
int (*mkdir)(struct kernfs_node *parent, const char *name,
umode_t mode);
int (*rmdir)(struct kernfs_node *kn);
@@ -128,7 +128,7 @@ struct kernfs_root {
/* private fields, do not use outside kernfs proper */
struct ida ino_ida;
- struct kernfs_dir_ops *dir_ops;
+ struct kernfs_syscall_ops *syscall_ops;
wait_queue_head_t deactivate_waitq;
};
@@ -219,7 +219,7 @@ struct kernfs_node *kernfs_find_and_get_ns(struct kernfs_node *parent,
void kernfs_get(struct kernfs_node *kn);
void kernfs_put(struct kernfs_node *kn);
-struct kernfs_root *kernfs_create_root(struct kernfs_dir_ops *kdops,
+struct kernfs_root *kernfs_create_root(struct kernfs_syscall_ops *scops,
void *priv);
void kernfs_destroy_root(struct kernfs_root *root);
@@ -273,7 +273,7 @@ static inline void kernfs_get(struct kernfs_node *kn) { }
static inline void kernfs_put(struct kernfs_node *kn) { }
static inline struct kernfs_root *
-kernfs_create_root(struct kernfs_dir_ops *kdops, void *priv)
+kernfs_create_root(struct kernfs_syscall_ops *scops, void *priv)
{ return ERR_PTR(-ENOSYS); }
static inline void kernfs_destroy_root(struct kernfs_root *root) { }
--
1.8.5.3
--
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