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f278809475
debugfs access modes were added in Linux 5.10 (Dec 2020) [1], but the no-mount mode has behaved effectively the same as the off mode since Linux 5.12 (Apr 2021) [2]. The only difference is the specific error code returned by the debugfs_create_* functions, which is -ENOENT in no-mount mode and -EPERM in off mode. Given that no-mount hasn't worked for several years with no complaints, just remove it. [1]a24c6f7bc9("debugfs: Add access restriction option") [2]bc6de804d3("debugfs: be more robust at handling improper input in debugfs_lookup()")56348560d4("debugfs: do not attempt to create a new file before the filesystem is initalized") Signed-off-by: Aaron Thompson <dev@aaront.org> Link: https://patch.msgid.link/20251120102222.18371-3-dev@null.aaront.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
59 lines
1.4 KiB
C
59 lines
1.4 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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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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#endif /* _DEBUGFS_INTERNAL_H_ */
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