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OpenCloudOS-Kernel
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fold debugfs_mknod() into callers 

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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68
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; 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) static inline int debugfs_positive(struct dentry *dentry)
{ {
return dentry->d_inode && !d_unhashed(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) const struct file_operations *fops)
{ {
struct dentry *dentry; struct dentry *dentry;
int error; struct inode *inode;
if (!(mode & S_IFMT)) if (!(mode & S_IFMT))
mode |= S_IFREG; mode |= S_IFREG;
@ -349,10 +334,14 @@ struct dentry *debugfs_create_file(const char *name, umode_t mode,
if (IS_ERR(dentry)) if (IS_ERR(dentry))
return NULL; return NULL;
error = debugfs_mknod(dentry, mode, data, fops); inode = debugfs_get_inode(dentry->d_sb, mode, 0, data, fops);
if (!error) if (unlikely(!inode))
fsnotify_create(dentry->d_parent->d_inode, dentry); return end_creating(dentry, -ENOMEM);
return end_creating(dentry, error);
d_instantiate(dentry, inode);
dget(dentry);
fsnotify_create(dentry->d_parent->d_inode, dentry);
return end_creating(dentry, 0);
} }
EXPORT_SYMBOL_GPL(debugfs_create_file); 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 *debugfs_create_dir(const char *name, struct dentry *parent)
{ {
struct dentry *dentry = start_creating(name, parent); struct dentry *dentry = start_creating(name, parent);
int error; struct inode *inode;
if (IS_ERR(dentry)) if (IS_ERR(dentry))
return NULL; return NULL;
error = debugfs_mknod(dentry, S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO, inode = debugfs_get_inode(dentry->d_sb,
NULL, NULL); S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO,
if (!error) { 0, NULL, NULL);
inc_nlink(dentry->d_parent->d_inode); if (unlikely(!inode))
fsnotify_mkdir(dentry->d_parent->d_inode, dentry); return end_creating(dentry, -ENOMEM);
}
return end_creating(dentry, error); 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, 0);
} }
EXPORT_SYMBOL_GPL(debugfs_create_dir); EXPORT_SYMBOL_GPL(debugfs_create_dir);
@ -419,25 +412,26 @@ struct dentry *debugfs_create_symlink(const char *name, struct dentry *parent,
const char *target) const char *target)
{ {
struct dentry *dentry; struct dentry *dentry;
char *link; struct inode *inode;
int error; char *link = kstrdup(target, GFP_KERNEL);
link = kstrdup(target, GFP_KERNEL);
if (!link) if (!link)
return NULL; return NULL;
dentry = start_creating(name, parent); dentry = start_creating(name, parent);
if (IS_ERR(dentry)) { if (IS_ERR(dentry)) {
kfree(link); kfree(link);
return NULL; return NULL;
} }
error = debugfs_mknod(dentry, S_IFLNK | S_IRWXUGO, link, NULL); inode = debugfs_get_inode(dentry->d_sb, S_IFLNK | S_IRWXUGO, 0,
if (error) link, NULL);
if (unlikely(!inode)) {
kfree(link); kfree(link);
return end_creating(dentry, -ENOMEM);
return end_creating(dentry, error); }
d_instantiate(dentry, inode);
dget(dentry);
return end_creating(dentry, 0);
} }
EXPORT_SYMBOL_GPL(debugfs_create_symlink); EXPORT_SYMBOL_GPL(debugfs_create_symlink);