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/* -*- linux-c -*- ------------------------------------------------------- *
*
* linux/fs/autofs/autofs_i.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.
*
* ----------------------------------------------------------------------- */
/* Internal header file for autofs */
#include <linux/auto_fs.h>
#include <linux/auto_fs_i.h>
/* This is the range of ioctl() numbers we claim as ours */
#define AUTOFS_IOC_FIRST AUTOFS_IOC_READY
#define AUTOFS_IOC_COUNT 32
#include <linux/kernel.h>
#include <linux/malloc.h>
#include <linux/sched.h>
#include <linux/string.h>
#include <linux/wait.h>
#include <asm/uaccess.h>
#ifdef DEBUG
#define DPRINTK(D) (printk D)
#else
#define DPRINTK(D) ((void)0)
#endif
#define AUTOFS_SUPER_MAGIC 0x0187
/*
* If the daemon returns a negative response (AUTOFS_IOC_FAIL) then the
* kernel will keep the negative response cached for up to the time given
* here, although the time can be shorter if the kernel throws the dcache
* entry away. This probably should be settable from user space.
*/
#define AUTOFS_NEGATIVE_TIMEOUT (60*HZ) /* 1 minute */
/* Magic directory wait queue structure */
struct autofs_wait_queue {
unsigned long wait_queue_token;
struct wait_queue *queue;
struct autofs_wait_queue *next;
/* We use the following to see what we are waiting for */
int hash;
int len;
char *name;
/* This is for status reporting upon return */
int status;
int wait_ctr;
};
#define AUTOFS_ROOT_INO 1
#define AUTOFS_FIRST_FREE_INO 2
#ifndef END_OF_TIME
#define END_OF_TIME ((time_t)((unsigned long)((time_t)(~0UL)) >> 1))
#endif
/* autofs_oz_mode(): do we see the man behind the curtain? (The
processes which do manipulations for us in user space sees the raw
filesystem without "magic".) */
extern inline int autofs_oz_mode(struct super_block *sb) {
return ((sb->u.autofs_sb.oz_pgrp == current->pgrp) ||
(sb->u.autofs_sb.oz_pgrp == 0));
}
/* Expiration-handling functions */
void autofs_update_usage(struct inode *);
struct autofs_dir_ent *autofs_expire(struct super_block *, unsigned long);
/* Initializing function */
struct super_block *autofs_read_super(struct super_block *, void *, int);
/* Queue management functions */
int autofs_wait(struct super_block *, struct qstr *);
int autofs_wait_release(struct super_block *, unsigned long, int);
void autofs_catatonic_mode(struct super_block *);
#ifdef DEBUG
void autofs_say(const char *name, int len);
#else
#define autofs_say(n,l) ((void)0)
#endif
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