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Diffstat (limited to 'fs/debugfs/internal.h')
| -rw-r--r-- | fs/debugfs/internal.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/fs/debugfs/internal.h b/fs/debugfs/internal.h new file mode 100644 index 000000000..f0d73d86c --- /dev/null +++ b/fs/debugfs/internal.h @@ -0,0 +1,32 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * internal.h - declarations internal to debugfs + * + * Copyright (C) 2016 Nicolai Stange <nicstange@gmail.com> + */ + +#ifndef _DEBUGFS_INTERNAL_H_ +#define _DEBUGFS_INTERNAL_H_ + +struct file_operations; + +/* declared over in file.c */ +extern const struct file_operations debugfs_noop_file_operations; +extern const struct file_operations debugfs_open_proxy_file_operations; +extern const struct file_operations debugfs_full_proxy_file_operations; + +struct debugfs_fsdata { + const struct file_operations *real_fops; + refcount_t active_users; + struct completion active_users_drained; +}; + +/* + * A dentry's ->d_fsdata either points to the real fops or to a + * dynamically allocated debugfs_fsdata instance. + * In order to distinguish between these two cases, a real fops + * pointer gets its lowest bit set. + */ +#define DEBUGFS_FSDATA_IS_REAL_FOPS_BIT BIT(0) + +#endif /* _DEBUGFS_INTERNAL_H_ */ |