diff options
| 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/inode.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/inode.c')
| -rw-r--r-- | fs/debugfs/inode.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c index c4e8b7f758e0..51d4c3e9d422 100644 --- a/fs/debugfs/inode.c +++ b/fs/debugfs/inode.c @@ -424,6 +424,7 @@ static struct dentry *end_creating(struct dentry *dentry) static struct dentry *__debugfs_create_file(const char *name, umode_t mode, struct dentry *parent, void *data, + const void *aux, const struct file_operations *proxy_fops, const void *real_fops) { @@ -458,6 +459,7 @@ static struct dentry *__debugfs_create_file(const char *name, umode_t mode, proxy_fops = &debugfs_noop_file_operations; inode->i_fop = proxy_fops; DEBUGFS_I(inode)->raw = real_fops; + DEBUGFS_I(inode)->aux = aux; d_instantiate(dentry, inode); fsnotify_create(d_inode(dentry->d_parent), dentry); @@ -466,19 +468,21 @@ static struct dentry *__debugfs_create_file(const char *name, umode_t mode, struct dentry *debugfs_create_file_full(const char *name, umode_t mode, struct dentry *parent, void *data, + const void *aux, const struct file_operations *fops) { - return __debugfs_create_file(name, mode, parent, data, + return __debugfs_create_file(name, mode, parent, data, aux, &debugfs_full_proxy_file_operations, fops); } EXPORT_SYMBOL_GPL(debugfs_create_file_full); struct dentry *debugfs_create_file_short(const char *name, umode_t mode, - struct dentry *parent, void *data, - const struct debugfs_short_fops *fops) + struct dentry *parent, void *data, + const void *aux, + const struct debugfs_short_fops *fops) { - return __debugfs_create_file(name, mode, parent, data, + return __debugfs_create_file(name, mode, parent, data, aux, &debugfs_full_short_proxy_file_operations, fops); } @@ -516,7 +520,7 @@ struct dentry *debugfs_create_file_unsafe(const char *name, umode_t mode, const struct file_operations *fops) { - return __debugfs_create_file(name, mode, parent, data, + return __debugfs_create_file(name, mode, parent, data, NULL, &debugfs_open_proxy_file_operations, fops); } |