/* * Copyright 2008 Red Hat, Inc. All rights reserved. * Copyright 2008 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 _LINUX_AUTO_DEV_IOCTL_H#define _LINUX_AUTO_DEV_IOCTL_H #include <linux/auto_fs.h> #ifdef __KERNEL__#include <linux/string.h>#else#include <string.h>#endif /* __KERNEL__ */ #define AUTOFS_DEVICE_NAME		"autofs" #define AUTOFS_DEV_IOCTL_VERSION_MAJOR	1#define AUTOFS_DEV_IOCTL_VERSION_MINOR	0 #define AUTOFS_DEVID_LEN		16 #define AUTOFS_DEV_IOCTL_SIZE		sizeof(struct autofs_dev_ioctl) /* * An ioctl interface for autofs mount point control. */ struct args_protover {	__u32	version;}; struct args_protosubver {	__u32	sub_version;}; struct args_openmount {	__u32	devid;}; struct args_ready {	__u32	token;}; struct args_fail {	__u32	token;	__s32	status;}; struct args_setpipefd {	__s32	pipefd;}; struct args_timeout {	__u64	timeout;}; struct args_requester {	__u32	uid;	__u32	gid;}; struct args_expire {	__u32	how;}; struct args_askumount {	__u32	may_umount;}; struct args_ismountpoint {	union {		struct args_in {			__u32	type;		} in;		struct args_out {			__u32	devid;			__u32	magic;		} out;	};}; /* * All the ioctls use this structure. * When sending a path size must account for the total length * of the chunk of memory otherwise is is the size of the * structure. */ struct autofs_dev_ioctl {	__u32 ver_major;	__u32 ver_minor;	__u32 size;		/* total size of data passed in				 * including this struct */	__s32 ioctlfd;		/* automount command fd */ 	/* Command parameters */ 	union {		struct args_protover		protover;		struct args_protosubver		protosubver;		struct args_openmount		openmount;		struct args_ready		ready;		struct args_fail		fail;		struct args_setpipefd		setpipefd;		struct args_timeout		timeout;		struct args_requester		requester;		struct args_expire		expire;		struct args_askumount		askumount;		struct args_ismountpoint	ismountpoint;	}; 	char path[0];}; static inline void init_autofs_dev_ioctl(struct autofs_dev_ioctl *in){	memset(in, 0, sizeof(struct autofs_dev_ioctl));	in->ver_major = AUTOFS_DEV_IOCTL_VERSION_MAJOR;	in->ver_minor = AUTOFS_DEV_IOCTL_VERSION_MINOR;	in->size = sizeof(struct autofs_dev_ioctl);	in->ioctlfd = -1;	return;} /* * If you change this make sure you make the corresponding change * to autofs-dev-ioctl.c:lookup_ioctl() */enum {	/* Get various version info */	AUTOFS_DEV_IOCTL_VERSION_CMD = 0x71,	AUTOFS_DEV_IOCTL_PROTOVER_CMD,	AUTOFS_DEV_IOCTL_PROTOSUBVER_CMD, 	/* Open mount ioctl fd */	AUTOFS_DEV_IOCTL_OPENMOUNT_CMD, 	/* Close mount ioctl fd */	AUTOFS_DEV_IOCTL_CLOSEMOUNT_CMD, 	/* Mount/expire status returns */	AUTOFS_DEV_IOCTL_READY_CMD,	AUTOFS_DEV_IOCTL_FAIL_CMD, 	/* Activate/deactivate autofs mount */	AUTOFS_DEV_IOCTL_SETPIPEFD_CMD,	AUTOFS_DEV_IOCTL_CATATONIC_CMD, 	/* Expiry timeout */	AUTOFS_DEV_IOCTL_TIMEOUT_CMD, 	/* Get mount last requesting uid and gid */	AUTOFS_DEV_IOCTL_REQUESTER_CMD, 	/* Check for eligible expire candidates */	AUTOFS_DEV_IOCTL_EXPIRE_CMD, 	/* Request busy status */	AUTOFS_DEV_IOCTL_ASKUMOUNT_CMD, 	/* Check if path is a mountpoint */	AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD,}; #define AUTOFS_IOCTL 0x93 #define AUTOFS_DEV_IOCTL_VERSION \	_IOWR(AUTOFS_IOCTL, \	      AUTOFS_DEV_IOCTL_VERSION_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_PROTOVER \	_IOWR(AUTOFS_IOCTL, \	      AUTOFS_DEV_IOCTL_PROTOVER_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_PROTOSUBVER \	_IOWR(AUTOFS_IOCTL, \	      AUTOFS_DEV_IOCTL_PROTOSUBVER_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_OPENMOUNT \	_IOWR(AUTOFS_IOCTL, \	      AUTOFS_DEV_IOCTL_OPENMOUNT_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_CLOSEMOUNT \	_IOWR(AUTOFS_IOCTL, \	      AUTOFS_DEV_IOCTL_CLOSEMOUNT_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_READY \	_IOWR(AUTOFS_IOCTL, \	      AUTOFS_DEV_IOCTL_READY_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_FAIL \	_IOWR(AUTOFS_IOCTL, \	      AUTOFS_DEV_IOCTL_FAIL_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_SETPIPEFD \	_IOWR(AUTOFS_IOCTL, \	      AUTOFS_DEV_IOCTL_SETPIPEFD_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_CATATONIC \	_IOWR(AUTOFS_IOCTL, \	      AUTOFS_DEV_IOCTL_CATATONIC_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_TIMEOUT \	_IOWR(AUTOFS_IOCTL, \	      AUTOFS_DEV_IOCTL_TIMEOUT_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_REQUESTER \	_IOWR(AUTOFS_IOCTL, \	      AUTOFS_DEV_IOCTL_REQUESTER_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_EXPIRE \	_IOWR(AUTOFS_IOCTL, \	      AUTOFS_DEV_IOCTL_EXPIRE_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_ASKUMOUNT \	_IOWR(AUTOFS_IOCTL, \	      AUTOFS_DEV_IOCTL_ASKUMOUNT_CMD, struct autofs_dev_ioctl) #define AUTOFS_DEV_IOCTL_ISMOUNTPOINT \	_IOWR(AUTOFS_IOCTL, \	      AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD, struct autofs_dev_ioctl) #endif	/* _LINUX_AUTO_DEV_IOCTL_H */