From 12c92098932b4bbf38396e9aed0a343d35437a21 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 12 Jan 2025 08:06:49 +0000 Subject: debugfs: allow to store an additional opaque pointer at file creation Set by debugfs_create_file_aux(name, mode, parent, data, aux, fops). Plain debugfs_create_file() has it set to NULL. Accessed by debugfs_get_aux(file). Convenience macros for numeric opaque data - debugfs_create_file_aux_num and debugfs_get_aux_num, resp. Signed-off-by: Al Viro Reviewed-by: Christian Brauner Link: https://lore.kernel.org/r/20250112080705.141166-5-viro@zeniv.linux.org.uk Signed-off-by: Greg Kroah-Hartman --- fs/debugfs/file.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'fs/debugfs/file.c') diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c index ae014bd36a6f..e33cc77699cd 100644 --- a/fs/debugfs/file.c +++ b/fs/debugfs/file.c @@ -47,6 +47,12 @@ const struct file_operations debugfs_noop_file_operations = { #define F_DENTRY(filp) ((filp)->f_path.dentry) +const void *debugfs_get_aux(const struct file *file) +{ + return DEBUGFS_I(file_inode(file))->aux; +} +EXPORT_SYMBOL_GPL(debugfs_get_aux); + const struct file_operations *debugfs_real_fops(const struct file *filp) { struct debugfs_fsdata *fsd = F_DENTRY(filp)->d_fsdata; -- cgit v1.2.3