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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2/*3 * Inode based directory notification for Linux4 *5 * Copyright (C) 2005 John McCutchan6 */7 8#ifndef _UAPI_LINUX_INOTIFY_H9#define _UAPI_LINUX_INOTIFY_H10 11/* For O_CLOEXEC and O_NONBLOCK */12#include <linux/fcntl.h>13#include <linux/types.h>14 15/*16 * struct inotify_event - structure read from the inotify device for each event17 *18 * When you are watching a directory, you will receive the filename for events19 * such as IN_CREATE, IN_DELETE, IN_OPEN, IN_CLOSE, ..., relative to the wd.20 */21struct inotify_event {22 __s32 wd; /* watch descriptor */23 __u32 mask; /* watch mask */24 __u32 cookie; /* cookie to synchronize two events */25 __u32 len; /* length (including nulls) of name */26 char name[]; /* stub for possible name */27};28 29/* the following are legal, implemented events that user-space can watch for */30#define IN_ACCESS 0x00000001 /* File was accessed */31#define IN_MODIFY 0x00000002 /* File was modified */32#define IN_ATTRIB 0x00000004 /* Metadata changed */33#define IN_CLOSE_WRITE 0x00000008 /* Writable file was closed */34#define IN_CLOSE_NOWRITE 0x00000010 /* Unwritable file closed */35#define IN_OPEN 0x00000020 /* File was opened */36#define IN_MOVED_FROM 0x00000040 /* File was moved from X */37#define IN_MOVED_TO 0x00000080 /* File was moved to Y */38#define IN_CREATE 0x00000100 /* Subfile was created */39#define IN_DELETE 0x00000200 /* Subfile was deleted */40#define IN_DELETE_SELF 0x00000400 /* Self was deleted */41#define IN_MOVE_SELF 0x00000800 /* Self was moved */42 43/* the following are legal events. they are sent as needed to any watch */44#define IN_UNMOUNT 0x00002000 /* Backing fs was unmounted */45#define IN_Q_OVERFLOW 0x00004000 /* Event queued overflowed */46#define IN_IGNORED 0x00008000 /* File was ignored */47 48/* helper events */49#define IN_CLOSE (IN_CLOSE_WRITE | IN_CLOSE_NOWRITE) /* close */50#define IN_MOVE (IN_MOVED_FROM | IN_MOVED_TO) /* moves */51 52/* special flags */53#define IN_ONLYDIR 0x01000000 /* only watch the path if it is a directory */54#define IN_DONT_FOLLOW 0x02000000 /* don't follow a sym link */55#define IN_EXCL_UNLINK 0x04000000 /* exclude events on unlinked objects */56#define IN_MASK_CREATE 0x10000000 /* only create watches */57#define IN_MASK_ADD 0x20000000 /* add to the mask of an already existing watch */58#define IN_ISDIR 0x40000000 /* event occurred against dir */59#define IN_ONESHOT 0x80000000 /* only send event once */60 61/*62 * All of the events - we build the list by hand so that we can add flags in63 * the future and not break backward compatibility. Apps will get only the64 * events that they originally wanted. Be sure to add new events here!65 */66#define IN_ALL_EVENTS (IN_ACCESS | IN_MODIFY | IN_ATTRIB | IN_CLOSE_WRITE | \67 IN_CLOSE_NOWRITE | IN_OPEN | IN_MOVED_FROM | \68 IN_MOVED_TO | IN_DELETE | IN_CREATE | IN_DELETE_SELF | \69 IN_MOVE_SELF)70 71/* Flags for sys_inotify_init1. */72#define IN_CLOEXEC O_CLOEXEC73#define IN_NONBLOCK O_NONBLOCK74 75/*76 * ioctl numbers: inotify uses 'I' prefix for all ioctls,77 * except historical FIONREAD, which is based on 'T'.78 *79 * INOTIFY_IOC_SETNEXTWD: set desired number of next created80 * watch descriptor.81 */82#define INOTIFY_IOC_SETNEXTWD _IOW('I', 0, __s32)83 84#endif /* _UAPI_LINUX_INOTIFY_H */85