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fold debugfs_mknod() into callers

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2015-01-25 14:31:32 -05:00
parent 3473cde565
commit 680b302409
1 changed files with 31 additions and 37 deletions
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62
fs/debugfs/inode.c
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@ -69,21 +69,6 @@ static struct inode *debugfs_get_inode(struct super_block *sb, umode_t mode, dev
return inode;
}
/* SMP-safe */
static int debugfs_mknod(struct dentry *dentry,
umode_t mode, void *data,
const struct file_operations *fops)
{
struct inode *inode;
inode = debugfs_get_inode(dentry->d_sb, mode, 0, data, fops);
if (unlikely(!inode))
return -EPERM;
d_instantiate(dentry, inode);
dget(dentry);
return 0;
}
static inline int debugfs_positive(struct dentry *dentry)
{
return dentry->d_inode && !d_unhashed(dentry);
@ -339,7 +324,7 @@ struct dentry *debugfs_create_file(const char *name, umode_t mode,
const struct file_operations *fops)
{
struct dentry *dentry;
int error;
struct inode *inode;
if (!(mode & S_IFMT))
mode |= S_IFREG;
@ -349,10 +334,14 @@ struct dentry *debugfs_create_file(const char *name, umode_t mode,
if (IS_ERR(dentry))
return NULL;
error = debugfs_mknod(dentry, mode, data, fops);
if (!error)
inode = debugfs_get_inode(dentry->d_sb, mode, 0, data, fops);
if (unlikely(!inode))
return end_creating(dentry, -ENOMEM);
d_instantiate(dentry, inode);
dget(dentry);
fsnotify_create(dentry->d_parent->d_inode, dentry);
return end_creating(dentry, error);
return end_creating(dentry, 0);
}
EXPORT_SYMBOL_GPL(debugfs_create_file);
@ -377,18 +366,22 @@ EXPORT_SYMBOL_GPL(debugfs_create_file);
struct dentry *debugfs_create_dir(const char *name, struct dentry *parent)
{
struct dentry *dentry = start_creating(name, parent);
int error;
struct inode *inode;
if (IS_ERR(dentry))
return NULL;
error = debugfs_mknod(dentry, S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO,
NULL, NULL);
if (!error) {
inode = debugfs_get_inode(dentry->d_sb,
S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO,
0, NULL, NULL);
if (unlikely(!inode))
return end_creating(dentry, -ENOMEM);
d_instantiate(dentry, inode);
dget(dentry);
inc_nlink(dentry->d_parent->d_inode);
fsnotify_mkdir(dentry->d_parent->d_inode, dentry);
}
return end_creating(dentry, error);
return end_creating(dentry, 0);
}
EXPORT_SYMBOL_GPL(debugfs_create_dir);
@ -419,25 +412,26 @@ struct dentry *debugfs_create_symlink(const char *name, struct dentry *parent,
const char *target)
{
struct dentry *dentry;
char *link;
int error;
link = kstrdup(target, GFP_KERNEL);
struct inode *inode;
char *link = kstrdup(target, GFP_KERNEL);
if (!link)
return NULL;
dentry = start_creating(name, parent);
if (IS_ERR(dentry)) {
kfree(link);
return NULL;
}
error = debugfs_mknod(dentry, S_IFLNK | S_IRWXUGO, link, NULL);
if (error)
inode = debugfs_get_inode(dentry->d_sb, S_IFLNK | S_IRWXUGO, 0,
link, NULL);
if (unlikely(!inode)) {
kfree(link);
return end_creating(dentry, error);
return end_creating(dentry, -ENOMEM);
}
d_instantiate(dentry, inode);
dget(dentry);
return end_creating(dentry, 0);
}
EXPORT_SYMBOL_GPL(debugfs_create_symlink);