nih/inotify.h - chromiumos/third_party/libnih - Git at Google

 /*
  * udev_sysdeps.h - wrapping of libc features and kernel defines
  *
  * Copyright (C) 2005-2006 Kay Sievers <kay.sievers at vrfy.org>
  *
  *	This program is free software; you can redistribute it and/or modify it
  *	under the terms of the GNU General Public License as published by the
  *	Free Software Foundation version 2 of the License.
  *
  *	This program is distributed in the hope that it will be useful, but
  *	WITHOUT ANY WARRANTY; without even the implied warranty of
  *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  *	General Public License for more details.
  *
  *	You should have received a copy of the GNU General Public License along
  *	with this program; if not, write to the Free Software Foundation, Inc.,
  *	675 Mass Ave, Cambridge, MA 02139, USA.
  *
  */

 #ifndef _UDEV_SYSDEPS_H_
 #define _UDEV_SYSDEPS_H_

 #include <string.h>
 #include <unistd.h>
 #include <stdint.h>

 /* needed until Inotify! syscalls reach glibc */
 #include <sys/syscall.h>
 #ifndef __NR_inotify_init
 #if defined(__i386__)
 # define __NR_inotify_init	291
 # define __NR_inotify_add_watch	292
 # define __NR_inotify_rm_watch	293
 #elif defined(__x86_64__)
 # define __NR_inotify_init	253
 # define __NR_inotify_add_watch	254
 # define __NR_inotify_rm_watch	255
 #elif defined(__powerpc__) || defined(__powerpc64__)
 # define __NR_inotify_init	275
 # define __NR_inotify_add_watch	276
 # define __NR_inotify_rm_watch	277
 #elif defined (__ia64__)
 # define __NR_inotify_init	1277
 # define __NR_inotify_add_watch	1278
 # define __NR_inotify_rm_watch	1279
 #elif defined (__s390__)
 # define __NR_inotify_init	284
 # define __NR_inotify_add_watch	285
 # define __NR_inotify_rm_watch	286
 #elif defined (__alpha__)
 # define __NR_inotify_init	444
 # define __NR_inotify_add_watch	445
 # define __NR_inotify_rm_watch	446
 #elif defined (__sparc__) || defined (__sparc64__)
 # define __NR_inotify_init	151
 # define __NR_inotify_add_watch	152
 # define __NR_inotify_rm_watch	156
 #elif defined (__arm__)
 # define __NR_inotify_init	__NR_SYSCALL_BASE+316
 # define __NR_inotify_add_watch	__NR_SYSCALL_BASE+317
 # define __NR_inotify_rm_watch	__NR_SYSCALL_BASE+318
 #elif defined (__sh__)
 # define __NR_inotify_init	290
 # define __NR_inotify_add_watch	291
 # define __NR_inotify_rm_watch	292
 #elif defined (__hppa__)
 # define __NR_inotify_init      269
 # define __NR_inotify_add_watch 270
 # define __NR_inotify_rm_watch  271
 #elif defined (__mips__)
 # include <sgidefs.h>
 # if _MIPS_SIM == _MIPS_SIM_ABI32
 #  define __NR_Linux             4000
 #  define __NR_inotify_init      (__NR_Linux + 284)
 #  define __NR_inotify_add_watch (__NR_Linux + 285)
 #  define __NR_inotify_rm_watch  (__NR_Linux + 286)
 # elif _MIPS_SIM == _MIPS_SIM_ABI64
 #  define __NR_Linux             5000
 #  define __NR_inotify_init      (__NR_Linux + 243)
 #  define __NR_inotify_add_watch (__NR_Linux + 244)
 #  define __NR_inotify_rm_watch  (__NR_Linux + 245)
 # elif _MIPS_SIM == _MIPS_SIM_NABI32
 #  define __NR_Linux             6000
 #  define __NR_inotify_init      (__NR_Linux + 247)
 #  define __NR_inotify_add_watch (__NR_Linux + 248)
 #  define __NR_inotify_rm_watch  (__NR_Linux + 249)
 # endif
 #else
 # warning "inotify unsupported on this architecture!"
 #endif
 #endif /* __NR_inotify_init */

 /* dummy if we don't have the syscalls defined */
 #ifndef __NR_inotify_init
 static inline int inotify_init(void)
 {
 	return -1;
 }

 static inline int inotify_add_watch(int fd, const char *name, uint32_t mask)
 {
 	return -1;
 }

 static inline int inotify_rm_watch(int fd, uint32_t wd)
 {
 	return -1;
 }
 #else
 static inline int inotify_init(void)
 {
 	return syscall(__NR_inotify_init);
 }

 static inline int inotify_add_watch(int fd, const char *name, uint32_t mask)
 {
 	return syscall(__NR_inotify_add_watch, fd, name, mask);
 }

 static inline int inotify_rm_watch(int fd, uint32_t wd)
 {
 	return syscall(__NR_inotify_rm_watch, fd, wd);
 }
 #endif /* __NR_inotify_init */

 #ifndef IN_CREATE
 #define IN_CREATE		0x00000100	/* Subfile was created */
 #define IN_MOVED_FROM		0x00000040	/* File was moved from X */
 #define IN_MOVED_TO		0x00000080	/* File was moved to Y */
 #define IN_DELETE		0x00000200	/* Subfile was deleted */
 #define IN_CLOSE_WRITE		0x00000008	/* Writtable file was closed */
 #define IN_MOVE			(IN_MOVED_FROM | IN_MOVED_TO) /* moves */
 #endif /* IN_CREATE */

 struct inotify_event {
 	int      wd;
 	uint32_t mask;
 	uint32_t cookie;
 	uint32_t len;
 	char     name[];
 };

 /* the following are legal, implemented events that user-space can watch for */
 #define IN_ACCESS		0x00000001	/* File was accessed */
 #define IN_MODIFY		0x00000002	/* File was modified */
 #define IN_ATTRIB		0x00000004	/* Metadata changed */
 #define IN_CLOSE_WRITE		0x00000008	/* Writtable file was closed */
 #define IN_CLOSE_NOWRITE	0x00000010	/* Unwrittable file closed */
 #define IN_OPEN			0x00000020	/* File was opened */
 #define IN_MOVED_FROM		0x00000040	/* File was moved from X */
 #define IN_MOVED_TO		0x00000080	/* File was moved to Y */
 #define IN_CREATE		0x00000100	/* Subfile was created */
 #define IN_DELETE		0x00000200	/* Subfile was deleted */
 #define IN_DELETE_SELF		0x00000400	/* Self was deleted */
 #define IN_MOVE_SELF		0x00000800	/* Self was moved */

 /* the following are legal events.  they are sent as needed to any watch */
 #define IN_UNMOUNT		0x00002000	/* Backing fs was unmounted */
 #define IN_Q_OVERFLOW		0x00004000	/* Event queued overflowed */
 #define IN_IGNORED		0x00008000	/* File was ignored */

 /* helper events */
 #define IN_CLOSE		(IN_CLOSE_WRITE | IN_CLOSE_NOWRITE) /* close */
 #define IN_MOVE			(IN_MOVED_FROM | IN_MOVED_TO) /* moves */

 /* special flags */
 #define IN_ONLYDIR		0x01000000	/* only watch the path if it is a directory */
 #define IN_DONT_FOLLOW		0x02000000	/* don't follow a sym link */
 #define IN_MASK_ADD		0x20000000	/* add to the mask of an already existing watch */
 #define IN_ISDIR		0x40000000	/* event occurred against dir */
 #define IN_ONESHOT		0x80000000	/* only send event once */

 /*
  * All of the events - we build the list by hand so that we can add flags in
  * the future and not break backward compatibility.  Apps will get only the
  * events that they originally wanted.  Be sure to add new events here!
  */
 #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)

 #endif
	/*
	* udev_sysdeps.h - wrapping of libc features and kernel defines
	*
	* Copyright (C) 2005-2006 Kay Sievers <kay.sievers at vrfy.org>
	*
	* This program is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License as published by the
	* Free Software Foundation version 2 of the License.
	*
	* This program is distributed in the hope that it will be useful, but
	* WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License along
	* with this program; if not, write to the Free Software Foundation, Inc.,
	* 675 Mass Ave, Cambridge, MA 02139, USA.
	*
	*/

	#ifndef _UDEV_SYSDEPS_H_
	#define _UDEV_SYSDEPS_H_

	#include <string.h>
	#include <unistd.h>
	#include <stdint.h>

	/* needed until Inotify! syscalls reach glibc */
	#include <sys/syscall.h>
	#ifndef __NR_inotify_init
	#if defined(__i386__)
	# define __NR_inotify_init 291
	# define __NR_inotify_add_watch 292
	# define __NR_inotify_rm_watch 293
	#elif defined(__x86_64__)
	# define __NR_inotify_init 253
	# define __NR_inotify_add_watch 254
	# define __NR_inotify_rm_watch 255
	#elif defined(__powerpc__) \|\| defined(__powerpc64__)
	# define __NR_inotify_init 275
	# define __NR_inotify_add_watch 276
	# define __NR_inotify_rm_watch 277
	#elif defined (__ia64__)
	# define __NR_inotify_init 1277
	# define __NR_inotify_add_watch 1278
	# define __NR_inotify_rm_watch 1279
	#elif defined (__s390__)
	# define __NR_inotify_init 284
	# define __NR_inotify_add_watch 285
	# define __NR_inotify_rm_watch 286
	#elif defined (__alpha__)
	# define __NR_inotify_init 444
	# define __NR_inotify_add_watch 445
	# define __NR_inotify_rm_watch 446
	#elif defined (__sparc__) \|\| defined (__sparc64__)
	# define __NR_inotify_init 151
	# define __NR_inotify_add_watch 152
	# define __NR_inotify_rm_watch 156
	#elif defined (__arm__)
	# define __NR_inotify_init __NR_SYSCALL_BASE+316
	# define __NR_inotify_add_watch __NR_SYSCALL_BASE+317
	# define __NR_inotify_rm_watch __NR_SYSCALL_BASE+318
	#elif defined (__sh__)
	# define __NR_inotify_init 290
	# define __NR_inotify_add_watch 291
	# define __NR_inotify_rm_watch 292
	#elif defined (__hppa__)
	# define __NR_inotify_init 269
	# define __NR_inotify_add_watch 270
	# define __NR_inotify_rm_watch 271
	#elif defined (__mips__)
	# include <sgidefs.h>
	# if _MIPS_SIM == _MIPS_SIM_ABI32
	# define __NR_Linux 4000
	# define __NR_inotify_init (__NR_Linux + 284)
	# define __NR_inotify_add_watch (__NR_Linux + 285)
	# define __NR_inotify_rm_watch (__NR_Linux + 286)
	# elif _MIPS_SIM == _MIPS_SIM_ABI64
	# define __NR_Linux 5000
	# define __NR_inotify_init (__NR_Linux + 243)
	# define __NR_inotify_add_watch (__NR_Linux + 244)
	# define __NR_inotify_rm_watch (__NR_Linux + 245)
	# elif _MIPS_SIM == _MIPS_SIM_NABI32
	# define __NR_Linux 6000
	# define __NR_inotify_init (__NR_Linux + 247)
	# define __NR_inotify_add_watch (__NR_Linux + 248)
	# define __NR_inotify_rm_watch (__NR_Linux + 249)
	# endif
	#else
	# warning "inotify unsupported on this architecture!"
	#endif
	#endif /* __NR_inotify_init */

	/* dummy if we don't have the syscalls defined */
	#ifndef __NR_inotify_init
	static inline int inotify_init(void)
	{
	return -1;
	}

	static inline int inotify_add_watch(int fd, const char *name, uint32_t mask)
	{
	return -1;
	}

	static inline int inotify_rm_watch(int fd, uint32_t wd)
	{
	return -1;
	}
	#else
	static inline int inotify_init(void)
	{
	return syscall(__NR_inotify_init);
	}

	static inline int inotify_add_watch(int fd, const char *name, uint32_t mask)
	{
	return syscall(__NR_inotify_add_watch, fd, name, mask);
	}

	static inline int inotify_rm_watch(int fd, uint32_t wd)
	{
	return syscall(__NR_inotify_rm_watch, fd, wd);
	}
	#endif /* __NR_inotify_init */

	#ifndef IN_CREATE
	#define IN_CREATE 0x00000100 /* Subfile was created */
	#define IN_MOVED_FROM 0x00000040 /* File was moved from X */
	#define IN_MOVED_TO 0x00000080 /* File was moved to Y */
	#define IN_DELETE 0x00000200 /* Subfile was deleted */
	#define IN_CLOSE_WRITE 0x00000008 /* Writtable file was closed */
	#define IN_MOVE (IN_MOVED_FROM \| IN_MOVED_TO) /* moves */
	#endif /* IN_CREATE */

	struct inotify_event {
	int wd;
	uint32_t mask;
	uint32_t cookie;
	uint32_t len;
	char name[];
	};

	/* the following are legal, implemented events that user-space can watch for */
	#define IN_ACCESS 0x00000001 /* File was accessed */
	#define IN_MODIFY 0x00000002 /* File was modified */
	#define IN_ATTRIB 0x00000004 /* Metadata changed */
	#define IN_CLOSE_WRITE 0x00000008 /* Writtable file was closed */
	#define IN_CLOSE_NOWRITE 0x00000010 /* Unwrittable file closed */
	#define IN_OPEN 0x00000020 /* File was opened */
	#define IN_MOVED_FROM 0x00000040 /* File was moved from X */
	#define IN_MOVED_TO 0x00000080 /* File was moved to Y */
	#define IN_CREATE 0x00000100 /* Subfile was created */
	#define IN_DELETE 0x00000200 /* Subfile was deleted */
	#define IN_DELETE_SELF 0x00000400 /* Self was deleted */
	#define IN_MOVE_SELF 0x00000800 /* Self was moved */

	/* the following are legal events. they are sent as needed to any watch */
	#define IN_UNMOUNT 0x00002000 /* Backing fs was unmounted */
	#define IN_Q_OVERFLOW 0x00004000 /* Event queued overflowed */
	#define IN_IGNORED 0x00008000 /* File was ignored */

	/* helper events */
	#define IN_CLOSE (IN_CLOSE_WRITE \| IN_CLOSE_NOWRITE) /* close */
	#define IN_MOVE (IN_MOVED_FROM \| IN_MOVED_TO) /* moves */

	/* special flags */
	#define IN_ONLYDIR 0x01000000 /* only watch the path if it is a directory */
	#define IN_DONT_FOLLOW 0x02000000 /* don't follow a sym link */
	#define IN_MASK_ADD 0x20000000 /* add to the mask of an already existing watch */
	#define IN_ISDIR 0x40000000 /* event occurred against dir */
	#define IN_ONESHOT 0x80000000 /* only send event once */

	/*
	* All of the events - we build the list by hand so that we can add flags in
	* the future and not break backward compatibility. Apps will get only the
	* events that they originally wanted. Be sure to add new events here!
	*/
	#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)

	#endif