1 /* 2 * Inode based directory notification for Linux 3 * 4 * Copyright (C) 2005 John McCutchan 5 */ 6 7 #ifndef _UAPI_LINUX_INOTIFY_H 8 #define _UAPI_LINUX_INOTIFY_H 9 10 /* For O_CLOEXEC and O_NONBLOCK */ 11 #include <linux/fcntl.h> 12 #include <linux/types.h> 13 14 /* 15 * struct inotify_event - structure read from the inotify device for each event 16 * 17 * When you are watching a directory, you will receive the filename for events 18 * such as IN_CREATE, IN_DELETE, IN_OPEN, IN_CLOSE, ..., relative to the wd. 19 */ 20 struct inotify_event { 21 __s32 wd; /* watch descriptor */ 22 __u32 mask; /* watch mask */ 23 __u32 cookie; /* cookie to synchronize two events */ 24 __u32 len; /* length (including nulls) of name */ 25 char name[0]; /* stub for possible name */ 26 }; 27 28 /* the following are legal, implemented events that user-space can watch for */ 29 #define IN_ACCESS 0x00000001 /* File was accessed */ 30 #define IN_MODIFY 0x00000002 /* File was modified */ 31 #define IN_ATTRIB 0x00000004 /* Metadata changed */ 32 #define IN_CLOSE_WRITE 0x00000008 /* Writtable file was closed */ 33 #define IN_CLOSE_NOWRITE 0x00000010 /* Unwrittable file closed */ 34 #define IN_OPEN 0x00000020 /* File was opened */ 35 #define IN_MOVED_FROM 0x00000040 /* File was moved from X */ 36 #define IN_MOVED_TO 0x00000080 /* File was moved to Y */ 37 #define IN_CREATE 0x00000100 /* Subfile was created */ 38 #define IN_DELETE 0x00000200 /* Subfile was deleted */ 39 #define IN_DELETE_SELF 0x00000400 /* Self was deleted */ 40 #define IN_MOVE_SELF 0x00000800 /* Self was moved */ 41 42 /* the following are legal events. they are sent as needed to any watch */ 43 #define IN_UNMOUNT 0x00002000 /* Backing fs was unmounted */ 44 #define IN_Q_OVERFLOW 0x00004000 /* Event queued overflowed */ 45 #define IN_IGNORED 0x00008000 /* File was ignored */ 46 47 /* helper events */ 48 #define IN_CLOSE (IN_CLOSE_WRITE | IN_CLOSE_NOWRITE) /* close */ 49 #define IN_MOVE (IN_MOVED_FROM | IN_MOVED_TO) /* moves */ 50 51 /* special flags */ 52 #define IN_ONLYDIR 0x01000000 /* only watch the path if it is a directory */ 53 #define IN_DONT_FOLLOW 0x02000000 /* don't follow a sym link */ 54 #define IN_EXCL_UNLINK 0x04000000 /* exclude events on unlinked objects */ 55 #define IN_MASK_ADD 0x20000000 /* add to the mask of an already existing watch */ 56 #define IN_ISDIR 0x40000000 /* event occurred against dir */ 57 #define IN_ONESHOT 0x80000000 /* only send event once */ 58 59 /* 60 * All of the events - we build the list by hand so that we can add flags in 61 * the future and not break backward compatibility. Apps will get only the 62 * events that they originally wanted. Be sure to add new events here! 63 */ 64 #define IN_ALL_EVENTS (IN_ACCESS | IN_MODIFY | IN_ATTRIB | IN_CLOSE_WRITE | \ 65 IN_CLOSE_NOWRITE | IN_OPEN | IN_MOVED_FROM | \ 66 IN_MOVED_TO | IN_DELETE | IN_CREATE | IN_DELETE_SELF | \ 67 IN_MOVE_SELF) 68 69 /* Flags for sys_inotify_init1. */ 70 #define IN_CLOEXEC O_CLOEXEC 71 #define IN_NONBLOCK O_NONBLOCK 72 73 74 #endif /* _UAPI_LINUX_INOTIFY_H */ 75