| Christopher Ferris | 2598113 | 2017-11-14 16:53:49 -0800 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
| Ben Cheng | 30692c6 | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 2 | /* |
| 3 | * Inode based directory notification for Linux |
| 4 | * |
| 5 | * Copyright (C) 2005 John McCutchan |
| 6 | */ |
| 7 | |
| 8 | #ifndef _UAPI_LINUX_INOTIFY_H |
| 9 | #define _UAPI_LINUX_INOTIFY_H |
| 10 | |
| 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 event |
| 17 | * |
| 18 | * When you are watching a directory, you will receive the filename for events |
| 19 | * such as IN_CREATE, IN_DELETE, IN_OPEN, IN_CLOSE, ..., relative to the wd. |
| 20 | */ |
| 21 | struct 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[0]; /* 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 /* Writtable file was closed */ |
| 34 | #define IN_CLOSE_NOWRITE 0x00000010 /* Unwrittable 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_ADD 0x20000000 /* add to the mask of an already existing watch */ |
| 57 | #define IN_ISDIR 0x40000000 /* event occurred against dir */ |
| 58 | #define IN_ONESHOT 0x80000000 /* only send event once */ |
| 59 | |
| 60 | /* |
| 61 | * All of the events - we build the list by hand so that we can add flags in |
| 62 | * the future and not break backward compatibility. Apps will get only the |
| 63 | * events that they originally wanted. Be sure to add new events here! |
| 64 | */ |
| 65 | #define IN_ALL_EVENTS (IN_ACCESS | IN_MODIFY | IN_ATTRIB | IN_CLOSE_WRITE | \ |
| 66 | IN_CLOSE_NOWRITE | IN_OPEN | IN_MOVED_FROM | \ |
| 67 | IN_MOVED_TO | IN_DELETE | IN_CREATE | IN_DELETE_SELF | \ |
| 68 | IN_MOVE_SELF) |
| 69 | |
| 70 | /* Flags for sys_inotify_init1. */ |
| 71 | #define IN_CLOEXEC O_CLOEXEC |
| 72 | #define IN_NONBLOCK O_NONBLOCK |
| 73 | |
| 74 | |
| 75 | #endif /* _UAPI_LINUX_INOTIFY_H */ |