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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* 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 */
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