14391c9f8b
[ Upstream commit e54183fa7047c15819bc155f4c58501d9a9a3489 ] The dnotify FS_DN_RENAME event is used to request notification about a move within the same parent directory and was always coupled with the FS_MOVED_FROM event. Rename the FS_DN_RENAME event flag to FS_RENAME, decouple it from FS_MOVED_FROM and report it with the moved dentry instead of the moved inode, so it has the information about both old and new parent and name. Generate the FS_RENAME event regardless of same parent dir and apply the "same parent" rule in the generic fsnotify_handle_event() helper that is used to call backends with ->handle_inode_event() method (i.e. dnotify). The ->handle_inode_event() method is not rich enough to report both old and new parent and name anyway. The enriched event is reported to fanotify over the ->handle_event() method with the old and new dir inode marks in marks array slots for ITER_TYPE_INODE and a new iter type slot ITER_TYPE_INODE2. The enriched event will be used for reporting old and new parent+name to fanotify groups with FAN_RENAME events. Link: https://lore.kernel.org/r/20211129201537.1932819-5-amir73il@gmail.com Signed-off-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
51 lines
1 KiB
C
Executable file
51 lines
1 KiB
C
Executable file
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_DNOTIFY_H
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#define _LINUX_DNOTIFY_H
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/*
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* Directory notification for Linux
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*
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* Copyright (C) 2000,2002 Stephen Rothwell
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*/
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#include <linux/fs.h>
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struct dnotify_struct {
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struct dnotify_struct * dn_next;
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__u32 dn_mask;
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int dn_fd;
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struct file * dn_filp;
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fl_owner_t dn_owner;
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};
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#ifdef __KERNEL__
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#ifdef CONFIG_DNOTIFY
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#define DNOTIFY_ALL_EVENTS (FS_DELETE | FS_DELETE_CHILD |\
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FS_MODIFY | FS_MODIFY_CHILD |\
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FS_ACCESS | FS_ACCESS_CHILD |\
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FS_ATTRIB | FS_ATTRIB_CHILD |\
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FS_CREATE | FS_RENAME |\
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FS_MOVED_FROM | FS_MOVED_TO)
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extern int dir_notify_enable;
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extern void dnotify_flush(struct file *, fl_owner_t);
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extern int fcntl_dirnotify(int, struct file *, unsigned long);
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#else
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static inline void dnotify_flush(struct file *filp, fl_owner_t id)
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{
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}
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static inline int fcntl_dirnotify(int fd, struct file *filp, unsigned long arg)
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{
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return -EINVAL;
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}
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#endif /* CONFIG_DNOTIFY */
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#endif /* __KERNEL __ */
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#endif /* _LINUX_DNOTIFY_H */
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