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debugfs: make sure that debugfs_create_file() gets used only for regulars 

It, debugfs_create_dir() and debugfs_create_link() use the common helper
now.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2012-06-09 20:28:22 -04:00
parent ee3efa91e2
commit c3b1a35084
1 changed files with 34 additions and 22 deletions
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56
fs/debugfs/inode.c
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@ -335,6 +335,30 @@ static int debugfs_create_by_name(const char *name, umode_t mode,
return error;
}
struct dentry *__create_file(const char *name, umode_t mode,
struct dentry *parent, void *data,
const struct file_operations *fops)
{
struct dentry *dentry = NULL;
int error;
pr_debug("debugfs: creating file '%s'\n",name);
error = simple_pin_fs(&debug_fs_type, &debugfs_mount,
&debugfs_mount_count);
if (error)
goto exit;
error = debugfs_create_by_name(name, mode, parent, &dentry,
data, fops);
if (error) {
dentry = NULL;
simple_release_fs(&debugfs_mount, &debugfs_mount_count);
}
exit:
return dentry;
}
/**
* debugfs_create_file - create a file in the debugfs filesystem
* @name: a pointer to a string containing the name of the file to create.
@ -365,25 +389,15 @@ struct dentry *debugfs_create_file(const char *name, umode_t mode,
struct dentry *parent, void *data,
const struct file_operations *fops)
{
struct dentry *dentry = NULL;
int error;
pr_debug("debugfs: creating file '%s'\n",name);
error = simple_pin_fs(&debug_fs_type, &debugfs_mount,
&debugfs_mount_count);
if (error)
goto exit;
error = debugfs_create_by_name(name, mode, parent, &dentry,
data, fops);
if (error) {
dentry = NULL;
simple_release_fs(&debugfs_mount, &debugfs_mount_count);
goto exit;
switch (mode & S_IFMT) {
case S_IFREG:
case 0:
break;
default:
BUG();
}
exit:
return dentry;
return __create_file(name, mode, parent, data, fops);
}
EXPORT_SYMBOL_GPL(debugfs_create_file);
@ -407,8 +421,7 @@ EXPORT_SYMBOL_GPL(debugfs_create_file);
*/
struct dentry *debugfs_create_dir(const char *name, struct dentry *parent)
{
return debugfs_create_file(name,
S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO,
return __create_file(name, S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO,
parent, NULL, NULL);
}
EXPORT_SYMBOL_GPL(debugfs_create_dir);
@ -446,8 +459,7 @@ struct dentry *debugfs_create_symlink(const char *name, struct dentry *parent,
if (!link)
return NULL;
result = debugfs_create_file(name, S_IFLNK | S_IRWXUGO, parent, link,
NULL);
result = __create_file(name, S_IFLNK | S_IRWXUGO, parent, link, NULL);
if (!result)
kfree(link);
return result;