1/* 2 * Inode based directory notification for Linux 3 * 4 * Copyright (C) 2005 John McCutchan 5 */ 6 7#ifndef _LINUX_INOTIFY_H 8#define _LINUX_INOTIFY_H 9 10/* For O_CLOEXEC and O_NONBLOCK */ 11#ifdef __KERNEL 12#include <linux/fcntl.h> 13#endif 14#include <linux/types.h> 15 16/* 17 * struct inotify_event - structure read from the inotify device for each event 18 * 19 * When you are watching a directory, you will receive the filename for events 20 * such as IN_CREATE, IN_DELETE, IN_OPEN, IN_CLOSE, ..., relative to the wd. 21 */ 22struct inotify_event { 23 __s32 wd; /* watch descriptor */ 24 __u32 mask; /* watch mask */ 25 __u32 cookie; /* cookie to synchronize two events */ 26 __u32 len; /* length (including nulls) of name */ 27 char name[0]; /* stub for possible name */ 28}; 29 30/* the following are legal, implemented events that user-space can watch for */ 31#define IN_ACCESS 0x00000001 /* File was accessed */ 32#define IN_MODIFY 0x00000002 /* File was modified */ 33#define IN_ATTRIB 0x00000004 /* Metadata changed */ 34#define IN_CLOSE_WRITE 0x00000008 /* Writtable file was closed */ 35#define IN_CLOSE_NOWRITE 0x00000010 /* Unwrittable file closed */ 36#define IN_OPEN 0x00000020 /* File was opened */ 37#define IN_MOVED_FROM 0x00000040 /* File was moved from X */ 38#define IN_MOVED_TO 0x00000080 /* File was moved to Y */ 39#define IN_CREATE 0x00000100 /* Subfile was created */ 40#define IN_DELETE 0x00000200 /* Subfile was deleted */ 41#define IN_DELETE_SELF 0x00000400 /* Self was deleted */ 42#define IN_MOVE_SELF 0x00000800 /* Self was moved */ 43 44/* the following are legal events. they are sent as needed to any watch */ 45#define IN_UNMOUNT 0x00002000 /* Backing fs was unmounted */ 46#define IN_Q_OVERFLOW 0x00004000 /* Event queued overflowed */ 47#define IN_IGNORED 0x00008000 /* File was ignored */ 48 49/* helper events */ 50#define IN_CLOSE (IN_CLOSE_WRITE | IN_CLOSE_NOWRITE) /* close */ 51#define IN_MOVE (IN_MOVED_FROM | IN_MOVED_TO) /* moves */ 52 53/* special flags */ 54#define IN_ONLYDIR 0x01000000 /* only watch the path if it is a directory */ 55#define IN_DONT_FOLLOW 0x02000000 /* don't follow a sym link */ 56#define IN_EXCL_UNLINK 0x04000000 /* exclude events on unlinked objects */ 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 in 63 * the future and not break backward compatibility. Apps will get only the 64 * 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_CLOEXEC 73#define IN_NONBLOCK O_NONBLOCK 74 75 76#endif /* _LINUX_INOTIFY_H */ 77