/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note *//* * Copyright 1997 Transmeta Corporation - All Rights Reserved * Copyright 1999-2000 Jeremy Fitzhardinge <jeremy@goop.org> * Copyright 2005-2006,2013,2017-2018 Ian Kent <raven@themaw.net> * * This file is part of the Linux kernel and is made available under * the terms of the GNU General Public License, version 2, or at your * option, any later version, incorporated herein by reference. * * ----------------------------------------------------------------------- */ #ifndef _UAPI_LINUX_AUTO_FS_H#define _UAPI_LINUX_AUTO_FS_H #include <linux/types.h>#include <linux/limits.h>#ifndef __KERNEL__#include <sys/ioctl.h>#endif /* __KERNEL__ */ #define AUTOFS_PROTO_VERSION		5#define AUTOFS_MIN_PROTO_VERSION	3#define AUTOFS_MAX_PROTO_VERSION	5 #define AUTOFS_PROTO_SUBVERSION		6 /* * The wait_queue_token (autofs_wqt_t) is part of a structure which is passed * back to the kernel via ioctl from userspace. On architectures where 32- and * 64-bit userspace binaries can be executed it's important that the size of * autofs_wqt_t stays constant between 32- and 64-bit Linux kernels so that we * do not break the binary ABI interface by changing the structure size. */#if defined(__ia64__) || defined(__alpha__) /* pure 64bit architectures */typedef unsigned long autofs_wqt_t;#elsetypedef unsigned int autofs_wqt_t;#endif /* Packet types */#define autofs_ptype_missing	0	/* Missing entry (mount request) */#define autofs_ptype_expire	1	/* Expire entry (umount request) */ struct autofs_packet_hdr {	int proto_version;		/* Protocol version */	int type;			/* Type of packet */}; struct autofs_packet_missing {	struct autofs_packet_hdr hdr;	autofs_wqt_t wait_queue_token;	int len;	char name[NAME_MAX+1];};	 /* v3 expire (via ioctl) */struct autofs_packet_expire {	struct autofs_packet_hdr hdr;	int len;	char name[NAME_MAX+1];}; #define AUTOFS_IOCTL 0x93 enum {	AUTOFS_IOC_READY_CMD = 0x60,	AUTOFS_IOC_FAIL_CMD,	AUTOFS_IOC_CATATONIC_CMD,	AUTOFS_IOC_PROTOVER_CMD,	AUTOFS_IOC_SETTIMEOUT_CMD,	AUTOFS_IOC_EXPIRE_CMD,}; #define AUTOFS_IOC_READY        _IO(AUTOFS_IOCTL, AUTOFS_IOC_READY_CMD)#define AUTOFS_IOC_FAIL         _IO(AUTOFS_IOCTL, AUTOFS_IOC_FAIL_CMD)#define AUTOFS_IOC_CATATONIC    _IO(AUTOFS_IOCTL, AUTOFS_IOC_CATATONIC_CMD)#define AUTOFS_IOC_PROTOVER     _IOR(AUTOFS_IOCTL, \				     AUTOFS_IOC_PROTOVER_CMD, int)#define AUTOFS_IOC_SETTIMEOUT32 _IOWR(AUTOFS_IOCTL, \				      AUTOFS_IOC_SETTIMEOUT_CMD, \				      compat_ulong_t)#define AUTOFS_IOC_SETTIMEOUT   _IOWR(AUTOFS_IOCTL, \				      AUTOFS_IOC_SETTIMEOUT_CMD, \				      unsigned long)#define AUTOFS_IOC_EXPIRE       _IOR(AUTOFS_IOCTL, \				     AUTOFS_IOC_EXPIRE_CMD, \				     struct autofs_packet_expire) /* autofs version 4 and later definitions */ /* Mask for expire behaviour */#define AUTOFS_EXP_NORMAL		0x00#define AUTOFS_EXP_IMMEDIATE		0x01#define AUTOFS_EXP_LEAVES		0x02#define AUTOFS_EXP_FORCED		0x04 #define AUTOFS_TYPE_ANY			0U#define AUTOFS_TYPE_INDIRECT		1U#define AUTOFS_TYPE_DIRECT		2U#define AUTOFS_TYPE_OFFSET		4U static inline void set_autofs_type_indirect(unsigned int *type){	*type = AUTOFS_TYPE_INDIRECT;} static inline unsigned int autofs_type_indirect(unsigned int type){	return (type == AUTOFS_TYPE_INDIRECT);} static inline void set_autofs_type_direct(unsigned int *type){	*type = AUTOFS_TYPE_DIRECT;} static inline unsigned int autofs_type_direct(unsigned int type){	return (type == AUTOFS_TYPE_DIRECT);} static inline void set_autofs_type_offset(unsigned int *type){	*type = AUTOFS_TYPE_OFFSET;} static inline unsigned int autofs_type_offset(unsigned int type){	return (type == AUTOFS_TYPE_OFFSET);} static inline unsigned int autofs_type_trigger(unsigned int type){	return (type == AUTOFS_TYPE_DIRECT || type == AUTOFS_TYPE_OFFSET);} /* * This isn't really a type as we use it to say "no type set" to * indicate we want to search for "any" mount in the * autofs_dev_ioctl_ismountpoint() device ioctl function. */static inline void set_autofs_type_any(unsigned int *type){	*type = AUTOFS_TYPE_ANY;} static inline unsigned int autofs_type_any(unsigned int type){	return (type == AUTOFS_TYPE_ANY);} /* Daemon notification packet types */enum autofs_notify {	NFY_NONE,	NFY_MOUNT,	NFY_EXPIRE}; /* Kernel protocol version 4 packet types */ /* Expire entry (umount request) */#define autofs_ptype_expire_multi	2 /* Kernel protocol version 5 packet types */ /* Indirect mount missing and expire requests. */#define autofs_ptype_missing_indirect	3#define autofs_ptype_expire_indirect	4 /* Direct mount missing and expire requests */#define autofs_ptype_missing_direct	5#define autofs_ptype_expire_direct	6 /* v4 multi expire (via pipe) */struct autofs_packet_expire_multi {	struct autofs_packet_hdr hdr;	autofs_wqt_t wait_queue_token;	int len;	char name[NAME_MAX+1];}; union autofs_packet_union {	struct autofs_packet_hdr hdr;	struct autofs_packet_missing missing;	struct autofs_packet_expire expire;	struct autofs_packet_expire_multi expire_multi;}; /* autofs v5 common packet struct */struct autofs_v5_packet {	struct autofs_packet_hdr hdr;	autofs_wqt_t wait_queue_token;	__u32 dev;	__u64 ino;	__u32 uid;	__u32 gid;	__u32 pid;	__u32 tgid;	__u32 len;	char name[NAME_MAX+1];}; typedef struct autofs_v5_packet autofs_packet_missing_indirect_t;typedef struct autofs_v5_packet autofs_packet_expire_indirect_t;typedef struct autofs_v5_packet autofs_packet_missing_direct_t;typedef struct autofs_v5_packet autofs_packet_expire_direct_t; union autofs_v5_packet_union {	struct autofs_packet_hdr hdr;	struct autofs_v5_packet v5_packet;	autofs_packet_missing_indirect_t missing_indirect;	autofs_packet_expire_indirect_t expire_indirect;	autofs_packet_missing_direct_t missing_direct;	autofs_packet_expire_direct_t expire_direct;}; enum {	AUTOFS_IOC_EXPIRE_MULTI_CMD = 0x66, /* AUTOFS_IOC_EXPIRE_CMD + 1 */	AUTOFS_IOC_PROTOSUBVER_CMD,	AUTOFS_IOC_ASKUMOUNT_CMD = 0x70, /* AUTOFS_DEV_IOCTL_VERSION_CMD - 1 */}; #define AUTOFS_IOC_EXPIRE_MULTI		_IOW(AUTOFS_IOCTL, \					     AUTOFS_IOC_EXPIRE_MULTI_CMD, int)#define AUTOFS_IOC_PROTOSUBVER		_IOR(AUTOFS_IOCTL, \					     AUTOFS_IOC_PROTOSUBVER_CMD, int)#define AUTOFS_IOC_ASKUMOUNT		_IOR(AUTOFS_IOCTL, \					     AUTOFS_IOC_ASKUMOUNT_CMD, int) #endif /* _UAPI_LINUX_AUTO_FS_H */