MAJOR=4
MINOR=67
DEVNAME=ttyS3
  #   ˆl–Ü4ı( ©³( 	Å€fàB¦-ÿÊ537ÉÀÇ     /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _UAPI_LINUX_KCMP_H
#define _UAPI_LINUX_KCMP_H

#include <linux/types.h>

/* Comparison type */
enum kcmp_type {
	KCMP_FILE,
	KCMP_VM,
	KCMP_FILES,
	KCMP_FS,
	KCMP_SIGHAND,
	KCMP_IO,
	KCMP_SYSVSEM,
	KCMP_EPOLL_TFD,

	KCMP_TYPES,
};

/* Slot for KCMP_EPOLL_TFD */
struct kcmp_epoll_slot {
	__u32 efd;		/* epoll file descriptor */
	__u32 tfd;		/* target file number */
	__u32 toff;		/* target offset within same numbered sequence */
};

#endif /* _UAPI_LINUX_KCMP_H */
     ˆ¾Êƒ}÷ÚÉÀÇ '
    /* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_FS_NOTIFY_H
#define _LINUX_FS_NOTIFY_H

/*
 * include/linux/fsnotify.h - generic hooks for filesystem notification, to
 * reduce in-source duplication from both dnotify and inotify.
 *
 * We don't compile any of this away in some complicated menagerie of ifdefs.
 * Instead, we rely on the code inside to optimize away as needed.
 *
 * (C) Copyright 2005 Robert Love
 */

#include <linux/fsnotify_backend.h>
#include <linux/audit.h>
#include <linux/slab.h>
#include <linux/bug.h>

/*
 * Notify this @dir inode about a change in a child directory entry.
 * The directory entry may have turned positive or negative or its inode may
 * have changed (i.e. renamed over).
 *
 * Unlike fsnotify_parent(), the event will be reported regardless of the
 * FS_EVENT_ON_CHILD mask on the parent inode and will not be reported if only
 * the child is interested and not the parent.
 */
static inline int fsnotify_name(__u32 mask, const void *data, int data_type,
				struct inode *dir, const struct qstr *name,
				u32 cookie)
{
	if (atomic_long_read(&dir->i_sb->s_fsnotify_connectors) == 0)
		return 0;

	return fsnotify(mask, data, data_type, dir, name, NULL, cookie);
}

static inline void fsnotify_dirent(struct inode *dir, struct dentry *dentry,
				   __u32 mask)
{
	fsnotify_name(mask, dentry, FSNOTIFY_EVENT_DENTRY, dir, &dentry->d_name, 0);
}

static inline void fsnotify_inode(struct inode *inode, __u32 mask)
{
	if (atomic_long_read(&inode->i_sb->s_fsnotify_connectors) == 0)
		return;

	if (S_ISDIR(inode->i_mode))
		mask |= FS_ISDIR;

	fsnotify(mask, inode, FSNOTIFY_EVENT_INODE, NULL, NULL, inode, 0);
}

/* Notify this dentry's parent about a child's events. */
static inline int fsnotify_parent(struct dentry *dentry, __u32 mask,
				  const void *data, int data_type)
{
	struct inode *inode = d_inode(dentry);

	if (atomic_long_read(&inode->i_sb->s_fsnotify_connectors) == 0)
		return 0;

	if (S_ISDIR(inode->i_mode)) {
		mask |= FS_ISDIR;

		/* sb/mount marks are not interested in name of directory */
		if (!(dentry->d_flags & DCACHE_FSNOTIFY_PARENT_WATCHED))
			goto notify_child;
	}

	/* disconnected dentry cannot notify parent */
	if (IS_ROOT(dentry))
		goto notify_child;

	return __fsnotify_parent(dentry, mask, data, data_type);

notify_child:
	return fsnotify(mask, data, data_type, NULL, NULL, inode, 0);
}

/*
 * Simple wrappers to consolidate calls to fsnotify_parent() when an event
 * is on a file/dentry.
 */
static inline void fsnotify_dentry(struct dentry *dentry, __u32 mask)
{
	fsnotify_parent(dentry, mask, dentry, FSNOTIFY_EVENT_DENTRY);
}

static inline int fsnotify_file(struct file *file, __u32 mask)
{
	const struct path *path;

	if (file->f_mode & FMODE_NONOTIFY)
		return 0;

	path = &file->f_path;
	return fsnotify_parent(path->dentry, mask, path, FSNOTIFY_EVENT_PATH);
}

/* Simple call site for access decisions */
static inline int fsnotify_perm(struct file *file, int mask)
{
	int ret;
	__u32 fsnotify_mask = 0;

	if (!(mask & (MAY_READ | MAY_OPEN)))
		return 0;

	if (mask & MAY_OPEN) {
		fsnotify_mask = FS_OPEN_PERM;

		if (file->f_flags & __FMODE_EXEC) {
			ret = fsnotify_file(file, FS_OPEN_EXEC_PERM);

			if (ret)
				return ret;
		}
	} else if (mask & MAY_READ) {
		fsnotify_mask = FS_ACCESS_PERM;
	}

	return fsnotify_file(file, fsnotify_mask);
}

/*
 * fsnotify_link_count - inode's link count changed
 */
static inline void fsnotify_link_cou