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authorAl Viro <viro@zeniv.linux.org.uk>2012-06-09 20:28:22 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-07-14 16:35:19 +0400
commitc3b1a350846a11dd1054cb7832e098aa37025deb (patch)
tree0915cd01d07b4b41c2133e307d7b74cb34a94a43 /fs/debugfs
parentee3efa91e240f513898050ef305a49a653c8ed90 (diff)
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>
Diffstat (limited to 'fs/debugfs')
-rw-r--r--fs/debugfs/inode.c56
1 files changed, 34 insertions, 22 deletions
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index b80bc846a15..d423b966bc7 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -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;