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12c9209893
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>
72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* internal.h - declarations internal to debugfs
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*
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* Copyright (C) 2016 Nicolai Stange <nicstange@gmail.com>
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*/
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#ifndef _DEBUGFS_INTERNAL_H_
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#define _DEBUGFS_INTERNAL_H_
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#include <linux/list.h>
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struct file_operations;
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struct debugfs_inode_info {
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struct inode vfs_inode;
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union {
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const void *raw;
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const struct file_operations *real_fops;
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const struct debugfs_short_fops *short_fops;
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debugfs_automount_t automount;
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};
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const void *aux;
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};
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static inline struct debugfs_inode_info *DEBUGFS_I(struct inode *inode)
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{
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return container_of(inode, struct debugfs_inode_info, vfs_inode);
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}
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/* declared over in file.c */
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extern const struct file_operations debugfs_noop_file_operations;
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extern const struct file_operations debugfs_open_proxy_file_operations;
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extern const struct file_operations debugfs_full_proxy_file_operations;
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extern const struct file_operations debugfs_full_short_proxy_file_operations;
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struct debugfs_fsdata {
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const struct file_operations *real_fops;
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const struct debugfs_short_fops *short_fops;
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struct {
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refcount_t active_users;
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struct completion active_users_drained;
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/* protect cancellations */
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struct mutex cancellations_mtx;
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struct list_head cancellations;
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unsigned int methods;
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};
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};
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enum {
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HAS_READ = 1,
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HAS_WRITE = 2,
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HAS_LSEEK = 4,
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HAS_POLL = 8,
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HAS_IOCTL = 16
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};
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#define DEBUGFS_ALLOW_API BIT(0)
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#define DEBUGFS_ALLOW_MOUNT BIT(1)
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#ifdef CONFIG_DEBUG_FS_ALLOW_ALL
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#define DEFAULT_DEBUGFS_ALLOW_BITS (DEBUGFS_ALLOW_MOUNT | DEBUGFS_ALLOW_API)
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#endif
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#ifdef CONFIG_DEBUG_FS_DISALLOW_MOUNT
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#define DEFAULT_DEBUGFS_ALLOW_BITS (DEBUGFS_ALLOW_API)
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#endif
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#ifdef CONFIG_DEBUG_FS_ALLOW_NONE
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#define DEFAULT_DEBUGFS_ALLOW_BITS (0)
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#endif
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#endif /* _DEBUGFS_INTERNAL_H_ */
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