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| author | Al Viro <viro@zeniv.linux.org.uk> | 2025-01-12 08:06:49 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-01-15 13:14:36 +0100 |
| commit | 12c92098932b4bbf38396e9aed0a343d35437a21 (patch) | |
| tree | f7efc17358613533ac59abea8dab106e74eba2fc /fs/debugfs/file.c | |
| parent | 95688800eefe28240204c2a0dd2bca5bf5f7f1d9 (diff) | |
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 <viro@zeniv.linux.org.uk>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Link: https://lore.kernel.org/r/20250112080705.141166-5-viro@zeniv.linux.org.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/debugfs/file.c')
| -rw-r--r-- | fs/debugfs/file.c | 6 |
1 files changed, 6 insertions, 0 deletions
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; |