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Diffstat (limited to 'usr/src/uts/common/sys/inotify.h')
| -rw-r--r-- | usr/src/uts/common/sys/inotify.h | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/usr/src/uts/common/sys/inotify.h b/usr/src/uts/common/sys/inotify.h new file mode 100644 index 0000000000..8acc1a7280 --- /dev/null +++ b/usr/src/uts/common/sys/inotify.h @@ -0,0 +1,153 @@ +/* + * This file and its contents are supplied under the terms of the + * Common Development and Distribution License ("CDDL"), version 1.0. + * You may only use this file in accordance with the terms of version + * 1.0 of the CDDL. + * + * A full copy of the text of the CDDL should have accompanied this + * source. A copy of the CDDL is also available via the Internet at + * http://www.illumos.org/license/CDDL. + */ + +/* + * Copyright (c) 2014 Joyent, Inc. All rights reserved. + */ + +/* + * Header file to support for the inotify facility. Note that this facility + * is designed to be binary compatible with the Linux inotify facility; values + * for constants here should therefore exactly match those found in Linux, and + * this facility shouldn't be extended independently of Linux. + */ + +#ifndef _SYS_INOTIFY_H +#define _SYS_INOTIFY_H + +#include <sys/types.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Events that can be explicitly requested on any inotify watch. + */ +#define IN_ACCESS 0x00000001 +#define IN_MODIFY 0x00000002 +#define IN_ATTRIB 0x00000004 +#define IN_CLOSE_WRITE 0x00000008 +#define IN_CLOSE_NOWRITE 0x00000010 +#define IN_OPEN 0x00000020 +#define IN_MOVED_FROM 0x00000040 +#define IN_MOVED_TO 0x00000080 +#define IN_CREATE 0x00000100 +#define IN_DELETE 0x00000200 +#define IN_DELETE_SELF 0x00000400 +#define IN_MOVE_SELF 0x00000800 + +/* + * Events that can be sent to an inotify watch -- requested or not. + */ +#define IN_UNMOUNT 0x00002000 +#define IN_Q_OVERFLOW 0x00004000 +#define IN_IGNORED 0x00008000 + +/* + * Flags that can modify an inotify event. + */ +#define IN_ONLYDIR 0x01000000 +#define IN_DONT_FOLLOW 0x02000000 +#define IN_EXCL_UNLINK 0x04000000 +#define IN_MASK_ADD 0x20000000 +#define IN_ISDIR 0x40000000 +#define IN_ONESHOT 0x80000000 + +/* + * Helpful constants. + */ +#define IN_CLOSE (IN_CLOSE_WRITE | IN_CLOSE_NOWRITE) +#define IN_MOVE (IN_MOVED_FROM | IN_MOVED_TO) +#define IN_ALL_EVENTS \ + (IN_ACCESS | IN_MODIFY | IN_ATTRIB | IN_CLOSE_WRITE | \ + IN_CLOSE_NOWRITE | IN_OPEN | IN_MOVED_FROM | IN_MOVED_TO | \ + IN_DELETE | IN_CREATE | IN_DELETE_SELF | IN_MOVE_SELF) + +#define IN_CHILD_EVENTS \ + (IN_ACCESS | IN_MODIFY | IN_ATTRIB | IN_CLOSE_WRITE | \ + IN_CLOSE_NOWRITE | IN_MODIFY | IN_OPEN) + +/* + * To assure binary compatibility with Linux, these values are fixed at their + * Linux equivalents, not their native ones. + */ +#define IN_CLOEXEC 02000000 /* LX_O_CLOEXEC */ +#define IN_NONBLOCK 04000 /* LX_O_NONBLOCK */ + +struct inotify_event { + int32_t wd; /* watch descriptor */ + uint32_t mask; /* mask of events */ + uint32_t cookie; /* event association cookie, if any */ + uint32_t len; /* size of name field */ + char name[]; /* optional NUL-terminated name */ +}; + +/* + * These ioctl values are specific to the native implementation; applications + * shouldn't be using them directly, and they should therefore be safe to + * change without breaking apps. + */ +#define INOTIFYIOC (('i' << 24) | ('n' << 16) | ('y' << 8)) +#define INOTIFYIOC_ADD_WATCH (INOTIFYIOC | 1) /* add watch */ +#define INOTIFYIOC_RM_WATCH (INOTIFYIOC | 2) /* remove watch */ +#define INOTIFYIOC_ADD_CHILD (INOTIFYIOC | 3) /* add child watch */ +#define INOTIFYIOC_ACTIVATE (INOTIFYIOC | 4) /* activate watch */ + +#ifndef _LP64 +#ifndef _LITTLE_ENDIAN +#define INOTIFY_PTR(type, name) uint32_t name##pad; type *name +#else +#define INOTIFY_PTR(type, name) type *name; uint32_t name##pad +#endif +#else +#define INOTIFY_PTR(type, name) type *name +#endif + +typedef struct inotify_addwatch { + int inaw_fd; /* open fd for object */ + uint32_t inaw_mask; /* desired mask */ +} inotify_addwatch_t; + +typedef struct inotify_addchild { + INOTIFY_PTR(char, inac_name); /* pointer to name */ + int inac_fd; /* open fd for parent */ +} inotify_addchild_t; + +#ifndef _KERNEL + +extern int inotify_init(void); +extern int inotify_init1(int); +extern int inotify_add_watch(int, const char *, uint32_t); +extern int inotify_rm_watch(int, int); + +#else + +#define IN_UNMASKABLE \ + (IN_UNMOUNT | IN_Q_OVERFLOW | IN_IGNORED | IN_ISDIR) + +#define IN_MODIFIERS \ + (IN_EXCL_UNLINK | IN_ONESHOT) + +#define IN_FLAGS \ + (IN_ONLYDIR | IN_DONT_FOLLOW | IN_MASK_ADD) + +#define IN_REMOVAL (1ULL << 32) +#define INOTIFYMNRN_INOTIFY 0 +#define INOTIFYMNRN_CLONE 1 + +#endif /* _KERNEL */ + +#ifdef __cplusplus +} +#endif + +#endif /* _SYS_INOTIFY_H */ |