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/* -*- linux-c -*- ------------------------------------------------------- *
*
* linux/include/linux/auto_fs.h
*
* Copyright 1997 Transmeta Corporation - All Rights Reserved
*
* 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_FS_H
#define _LINUX_AUTO_FS_H
#include <linux/version.h>
#include <linux/fs.h>
#include <linux/limits.h>
#include <linux/ioctl.h>
#include <asm/types.h>
#define AUTOFS_PROTO_MAJOR_VERSION 4
#define AUTOFS_PROTO_MINOR_VERSION 0
#define AUTOFS_PROTO_FEATURES 0x00000000
#define AUTOFS_NAME_MAX 255
/*
* Previous protocol version differences:
*
* 1.0 - never distributed
* 2.0 - hdr.body_len field used for protocol version; only
* autofs_ptype_missing supported; IOC_READY, IOC_FAIL, IOC_CATATONIC
* only.
* 3.0 - hdr.body_len field used for protocol version; added support for
* IOC_PROTOVER, IOC_SETTIMEOUT, IOC_EXPIRE.
*
*/
enum autofs_packet_type {
AUTOFS_PTYPE_MISSING, /* Missing entry (mount request) */
AUTOFS_PTYPE_EXPIRE, /* Expire entry (umount request) */
};
struct autofs_packet_hdr {
int body_len; /* Length of packet body in bytes */
enum autofs_packet_type type; /* Type of packet */
};
struct autofs_process_info {
int pid; /* pid of requesting process */
int uid; /* fsuid of requesting process */
int gid; /* fsgid of requesting process */
int umask; /* umask of requesting process */
};
struct autofs_packet_missing_body {
unsigned long wait_queue_token;
struct autofs_process_info pinfo;
unsigned long parent; /* parent "magic cookie" */
int len;
char name[AUTOFS_NAME_MAX+1];
};
struct autofs_packet_missing {
struct autofs_packet_hdr hdr;
struct autofs_packet_missing_body body;
};
/* Packet format for protocol versions 2-3 */
struct autofs_v3_packet_missing {
struct autofs_packet_hdr hdr; /* body_len field not valid */
int len;
char name[AUTOFS_NAME_MAX+1];
};
struct autofs_packet_expire_body {
int len;
char name[AUTOFS_NAME_MAX+1];
};
struct autofs_packet_expire {
struct autofs_packet_hdr hdr;
struct autofs_packet_expire_body body;
};
struct autofs_proto_info {
unsigned short major_ver;
unsigned short minor_ver;
unsigned long features;
};
enum autofs_dir_mode {
AUTOFS_DIR_LOCKED,
AUTOFS_DIR_UNLOCKED,
AUTOFS_DIR_MAGIC,
AUTOFS_DIR_MODECOUNT
};
struct autofs_set_dir_mode {
unsigned long inode; /* inode number */
unsigned long cookie; /* magic cookie for AUTOFS_DIR_MAGIC */
enum autofs_dir_mode mode;
};
#define AUTOFS_IOC_READY _IO(0x93,0x60)
#define AUTOFS_IOC_FAIL _IO(0x93,0x61)
#define AUTOFS_IOC_CATATONIC _IO(0x93,0x62)
#define AUTOFS_IOC_PROTOVER _IOR(0x93,0x63,int)
#define AUTOFS_IOC_SETTIMEOUT _IOWR(0x93,0x64,unsigned long)
#define AUTOFS_IOC_EXPIRE _IOR(0x93,0x65,struct autofs_packet_expire)
#define AUTOFS_IOC_PROTOINFO _IOR(0x93,0x66,struct autofs_proto_info)
#define AUTOFS_IOC_ENABLE _IO(0x93,0x67)
#define AUTOFS_IOC_SETDIRMODE _IOW(0x93,0x68,struct autofs_set_dir_mode)
#ifdef __KERNEL__
/* Init function */
int init_autofs_fs(void);
#endif /* __KERNEL__ */
#endif /* _LINUX_AUTO_FS_H */
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