[linux.git] / fs / autofs4 / inode.c

/* -*- c -*- --------------------------------------------------------------- *
 *
 * linux/fs/autofs/inode.c
 *
 *  Copyright 1997-1998 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.
 *
 * ------------------------------------------------------------------------- */

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/file.h>
#include <linux/pagemap.h>
#include <linux/parser.h>
#include <linux/bitops.h>
#include <linux/smp_lock.h>
#include "autofs_i.h"
#include <linux/module.h>

static void ino_lnkfree(struct autofs_info *ino)
{
	kfree(ino->u.symlink);
	ino->u.symlink = NULL;
}

struct autofs_info *autofs4_init_ino(struct autofs_info *ino,
				     struct autofs_sb_info *sbi, mode_t mode)
{
	int reinit = 1;

	if (ino == NULL) {
		reinit = 0;
		ino = kmalloc(sizeof(*ino), GFP_KERNEL);
	}

	if (ino == NULL)
		return NULL;

	ino->flags = 0;
	ino->mode = mode;
	ino->inode = NULL;
	ino->dentry = NULL;
	ino->size = 0;

	ino->last_used = jiffies;
	atomic_set(&ino->count, 0);

	ino->sbi = sbi;

	if (reinit && ino->free)
		(ino->free)(ino);

	memset(&ino->u, 0, sizeof(ino->u));

	ino->free = NULL;

	if (S_ISLNK(mode))
		ino->free = ino_lnkfree;

	return ino;
}

void autofs4_free_ino(struct autofs_info *ino)
{
	struct autofs_info *p_ino;

	if (ino->dentry) {
		ino->dentry->d_fsdata = NULL;
		if (ino->dentry->d_inode) {
			struct dentry *parent = ino->dentry->d_parent;
			if (atomic_dec_and_test(&ino->count)) {
				p_ino = autofs4_dentry_ino(parent);
				if (p_ino && parent != ino->dentry)
					atomic_dec(&p_ino->count);
			}
			dput(ino->dentry);
		}
		ino->dentry = NULL;
	}
	if (ino->free)
		(ino->free)(ino);
	kfree(ino);
}

/*
 * Deal with the infamous "Busy inodes after umount ..." message.
 *
 * Clean up the dentry tree. This happens with autofs if the user
 * space program goes away due to a SIGKILL, SIGSEGV etc.
 */
static void autofs4_force_release(struct autofs_sb_info *sbi)
{
	struct dentry *this_parent = sbi->root;
	struct list_head *next;

	spin_lock(&dcache_lock);
repeat:
	next = this_parent->d_subdirs.next;
resume:
	while (next != &this_parent->d_subdirs) {
		struct dentry *dentry = list_entry(next, struct dentry, d_u.d_child);

		/* Negative dentry - don`t care */
		if (!simple_positive(dentry)) {
			next = next->next;
			continue;
		}

		if (!list_empty(&dentry->d_subdirs)) {
			this_parent = dentry;
			goto repeat;
		}

		next = next->next;
		spin_unlock(&dcache_lock);

		DPRINTK("dentry %p %.*s",
			dentry, (int)dentry->d_name.len, dentry->d_name.name);

		dput(dentry);
		spin_lock(&dcache_lock);
	}

	if (this_parent != sbi->root) {
		struct dentry *dentry = this_parent;

		next = this_parent->d_u.d_child.next;
		this_parent = this_parent->d_parent;
		spin_unlock(&dcache_lock);
		DPRINTK("parent dentry %p %.*s",
			dentry, (int)dentry->d_name.len, dentry->d_name.name);
		dput(dentry);
		spin_lock(&dcache_lock);
		goto resume;
	}
	spin_unlock(&dcache_lock);

	dput(sbi->root);
	sbi->root = NULL;
	shrink_dcache_sb(sbi->sb);

	return;
}

static void autofs4_put_super(struct super_block *sb)
{
	struct autofs_sb_info *sbi = autofs4_sbi(sb);

	sb->s_fs_info = NULL;

	if ( !sbi->catatonic )
		autofs4_catatonic_mode(sbi); /* Free wait queues, close pipe */

	/* Clean up and release dangling references */
	if (sbi)
		autofs4_force_release(sbi);

	kfree(sbi);

	DPRINTK("shutting down");
}

static struct super_operations autofs4_sops = {
	.put_super	= autofs4_put_super,
	.statfs		= simple_statfs,
};

enum {Opt_err, Opt_fd, Opt_uid, Opt_gid, Opt_pgrp, Opt_minproto, Opt_maxproto};

static match_table_t tokens = {
	{Opt_fd, "fd=%u"},
	{Opt_uid, "uid=%u"},
	{Opt_gid, "gid=%u"},
	{Opt_pgrp, "pgrp=%u"},
	{Opt_minproto, "minproto=%u"},
	{Opt_maxproto, "maxproto=%u"},
	{Opt_err, NULL}
};

static int parse_options(char *options, int *pipefd, uid_t *uid, gid_t *gid,
			 pid_t *pgrp, int *minproto, int *maxproto)
{
	char *p;
	substring_t args[MAX_OPT_ARGS];
	int option;

	*uid = current->uid;
	*gid = current->gid;
	*pgrp = process_group(current);

	*minproto = AUTOFS_MIN_PROTO_VERSION;
	*maxproto = AUTOFS_MAX_PROTO_VERSION;

	*pipefd = -1;

	if (!options)
		return 1;

	while ((p = strsep(&options, ",")) != NULL) {
		int token;
		if (!*p)
			continue;

		token = match_token(p, tokens, args);
		switch (token) {
		case Opt_fd:
			if (match_int(args, pipefd))
				return 1;
			break;
		case Opt_uid:
			if (match_int(args, &option))
				return 1;
			*uid = option;
			break;
		case Opt_gid:
			if (match_int(args, &option))
				return 1;
			*gid = option;
			break;
		case Opt_pgrp:
			if (match_int(args, &option))
				return 1;
			*pgrp = option;
			break;
		case Opt_minproto:
			if (match_int(args, &option))
				return 1;
			*minproto = option;
			break;
		case Opt_maxproto:
			if (match_int(args, &option))
				return 1;
			*maxproto = option;
			break;
		default:
			return 1;
		}
	}
	return (*pipefd < 0);
}

static struct autofs_info *autofs4_mkroot(struct autofs_sb_info *sbi)
{
	struct autofs_info *ino;

	ino = autofs4_init_ino(NULL, sbi, S_IFDIR | 0755);
	if (!ino)
		return NULL;

	return ino;
}

int autofs4_fill_super(struct super_block *s, void *data, int silent)
{
	struct inode * root_inode;
	struct dentry * root;
	struct file * pipe;
	int pipefd;
	struct autofs_sb_info *sbi;
	struct autofs_info *ino;
	int minproto, maxproto;

	sbi = (struct autofs_sb_info *) kmalloc(sizeof(*sbi), GFP_KERNEL);
	if ( !sbi )
		goto fail_unlock;
	DPRINTK("starting up, sbi = %p",sbi);

	memset(sbi, 0, sizeof(*sbi));

	s->s_fs_info = sbi;
	sbi->magic = AUTOFS_SBI_MAGIC;
	sbi->root = NULL;
	sbi->catatonic = 0;
	sbi->exp_timeout = 0;
	sbi->oz_pgrp = process_group(current);
	sbi->sb = s;
	sbi->version = 0;
	sbi->sub_version = 0;
	mutex_init(&sbi->wq_mutex);
	spin_lock_init(&sbi->fs_lock);
	sbi->queues = NULL;
	s->s_blocksize = 1024;
	s->s_blocksize_bits = 10;
	s->s_magic = AUTOFS_SUPER_MAGIC;
	s->s_op = &autofs4_sops;
	s->s_time_gran = 1;

	/*
	 * Get the root inode and dentry, but defer checking for errors.
	 */
	ino = autofs4_mkroot(sbi);
	if (!ino)
		goto fail_free;
	root_inode = autofs4_get_inode(s, ino);
	kfree(ino);
	if (!root_inode)
		goto fail_free;

	root_inode->i_op = &autofs4_root_inode_operations;
	root_inode->i_fop = &autofs4_root_operations;
	root = d_alloc_root(root_inode);
	pipe = NULL;

	if (!root)
		goto fail_iput;

	/* Can this call block? */
	if (parse_options(data, &pipefd,
			  &root_inode->i_uid, &root_inode->i_gid,
			  &sbi->oz_pgrp,
			  &minproto, &maxproto)) {
		printk("autofs: called with bogus options\n");
		goto fail_dput;
	}

	/* Couldn't this be tested earlier? */
	if (maxproto < AUTOFS_MIN_PROTO_VERSION ||
	    minproto > AUTOFS_MAX_PROTO_VERSION) {
		printk("autofs: kernel does not match daemon version "
		       "daemon (%d, %d) kernel (%d, %d)\n",
			minproto, maxproto,
			AUTOFS_MIN_PROTO_VERSION, AUTOFS_MAX_PROTO_VERSION);
		goto fail_dput;
	}

	sbi->version = maxproto > AUTOFS_MAX_PROTO_VERSION ? AUTOFS_MAX_PROTO_VERSION : maxproto;
	sbi->sub_version = AUTOFS_PROTO_SUBVERSION;

	DPRINTK("pipe fd = %d, pgrp = %u", pipefd, sbi->oz_pgrp);
	pipe = fget(pipefd);
	
	if ( !pipe ) {
		printk("autofs: could not open pipe file descriptor\n");
		goto fail_dput;
	}
	if ( !pipe->f_op || !pipe->f_op->write )
		goto fail_fput;
	sbi->pipe = pipe;

	/*
	 * Take a reference to the root dentry so we get a chance to
	 * clean up the dentry tree on umount.
	 * See autofs4_force_release.
	 */
	sbi->root = dget(root);

	/*
	 * Success! Install the root dentry now to indicate completion.
	 */
	s->s_root = root;
	return 0;
	
	/*
	 * Failure ... clean up.
	 */
fail_fput:
	printk("autofs: pipe file descriptor does not contain proper ops\n");
	fput(pipe);
	/* fall through */
fail_dput:
	dput(root);
	goto fail_free;
fail_iput:
	printk("autofs: get root dentry failed\n");
	iput(root_inode);
fail_free:
	kfree(sbi);
fail_unlock:
	return -EINVAL;
}

struct inode *autofs4_get_inode(struct super_block *sb,
				struct autofs_info *inf)
{
	struct inode *inode = new_inode(sb);

	if (inode == NULL)
		return NULL;

	inf->inode = inode;
	inode->i_mode = inf->mode;
	if (sb->s_root) {
		inode->i_uid = sb->s_root->d_inode->i_uid;
		inode->i_gid = sb->s_root->d_inode->i_gid;
	} else {
		inode->i_uid = 0;
		inode->i_gid = 0;
	}
	inode->i_blksize = PAGE_CACHE_SIZE;
	inode->i_blocks = 0;
	inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;

	if (S_ISDIR(inf->mode)) {
		inode->i_nlink = 2;
		inode->i_op = &autofs4_dir_inode_operations;
		inode->i_fop = &autofs4_dir_operations;
	} else if (S_ISLNK(inf->mode)) {
		inode->i_size = inf->size;
		inode->i_op = &autofs4_symlink_inode_operations;
	}

	return inode;
}
Commit	Line	Data
1da177e4 LT	1	/* -- c -- --------------------------------------------------------------- *
	2	*
	3	* linux/fs/autofs/inode.c
	4	*
	5	* Copyright 1997-1998 Transmeta Corporation -- All Rights Reserved
	6	*
	7	* This file is part of the Linux kernel and is made available under
	8	* the terms of the GNU General Public License, version 2, or at your
	9	* option, any later version, incorporated herein by reference.
	10	*
	11	* ------------------------------------------------------------------------- */
	12
	13	#include <linux/kernel.h>
	14	#include <linux/slab.h>
	15	#include <linux/file.h>
	16	#include <linux/pagemap.h>
	17	#include <linux/parser.h>
	18	#include <linux/bitops.h>
104e49fc	19	#include <linux/smp_lock.h>
1da177e4 LT	20	#include "autofs_i.h"
	21	#include <linux/module.h>
	22
	23	static void ino_lnkfree(struct autofs_info *ino)
	24	{
f99d49ad JJ	25	kfree(ino->u.symlink);
f99d49ad JJ	26	ino->u.symlink = NULL;
1da177e4 LT	27	}
	28
	29	struct autofs_info autofs4_init_ino(struct autofs_info ino,
	30	struct autofs_sb_info *sbi, mode_t mode)
	31	{
	32	int reinit = 1;
	33
	34	if (ino == NULL) {
	35	reinit = 0;
	36	ino = kmalloc(sizeof(*ino), GFP_KERNEL);
	37	}
	38
	39	if (ino == NULL)
	40	return NULL;
	41
	42	ino->flags = 0;
	43	ino->mode = mode;
	44	ino->inode = NULL;
	45	ino->dentry = NULL;
	46	ino->size = 0;
	47
	48	ino->last_used = jiffies;
1aff3c8b	49	atomic_set(&ino->count, 0);
1da177e4 LT	50
	51	ino->sbi = sbi;
	52
	53	if (reinit && ino->free)
	54	(ino->free)(ino);
	55
	56	memset(&ino->u, 0, sizeof(ino->u));
	57
	58	ino->free = NULL;
	59
	60	if (S_ISLNK(mode))
	61	ino->free = ino_lnkfree;
	62
	63	return ino;
	64	}
	65
	66	void autofs4_free_ino(struct autofs_info *ino)
	67	{
1aff3c8b IK	68	struct autofs_info *p_ino;
1aff3c8b IK	69
1da177e4 LT	70	if (ino->dentry) {
1da177e4 LT	71	ino->dentry->d_fsdata = NULL;
1aff3c8b IK	72	if (ino->dentry->d_inode) {
	73	struct dentry *parent = ino->dentry->d_parent;
	74	if (atomic_dec_and_test(&ino->count)) {
	75	p_ino = autofs4_dentry_ino(parent);
	76	if (p_ino && parent != ino->dentry)
	77	atomic_dec(&p_ino->count);
	78	}
1da177e4	79	dput(ino->dentry);
1aff3c8b	80	}
1da177e4 LT	81	ino->dentry = NULL;
	82	}
	83	if (ino->free)
	84	(ino->free)(ino);
	85	kfree(ino);
	86	}
	87
104e49fc IK	88	/*
	89	* Deal with the infamous "Busy inodes after umount ..." message.
	90	*
	91	* Clean up the dentry tree. This happens with autofs if the user
	92	* space program goes away due to a SIGKILL, SIGSEGV etc.
	93	*/
	94	static void autofs4_force_release(struct autofs_sb_info *sbi)
	95	{
	96	struct dentry *this_parent = sbi->root;
	97	struct list_head *next;
	98
	99	spin_lock(&dcache_lock);
	100	repeat:
	101	next = this_parent->d_subdirs.next;
	102	resume:
	103	while (next != &this_parent->d_subdirs) {
5160ee6f	104	struct dentry *dentry = list_entry(next, struct dentry, d_u.d_child);
104e49fc IK	105
	106	/* Negative dentry - don`t care */
	107	if (!simple_positive(dentry)) {
	108	next = next->next;
	109	continue;
	110	}
	111
	112	if (!list_empty(&dentry->d_subdirs)) {
	113	this_parent = dentry;
	114	goto repeat;
	115	}
	116
	117	next = next->next;
	118	spin_unlock(&dcache_lock);
	119
	120	DPRINTK("dentry %p %.*s",
	121	dentry, (int)dentry->d_name.len, dentry->d_name.name);
	122
	123	dput(dentry);
	124	spin_lock(&dcache_lock);
	125	}
	126
	127	if (this_parent != sbi->root) {
	128	struct dentry *dentry = this_parent;
	129
5160ee6f	130	next = this_parent->d_u.d_child.next;
104e49fc IK	131	this_parent = this_parent->d_parent;
	132	spin_unlock(&dcache_lock);
	133	DPRINTK("parent dentry %p %.*s",
	134	dentry, (int)dentry->d_name.len, dentry->d_name.name);
	135	dput(dentry);
	136	spin_lock(&dcache_lock);
	137	goto resume;
	138	}
	139	spin_unlock(&dcache_lock);
	140
	141	dput(sbi->root);
	142	sbi->root = NULL;
	143	shrink_dcache_sb(sbi->sb);
	144
	145	return;
	146	}
	147
1da177e4 LT	148	static void autofs4_put_super(struct super_block *sb)
	149	{
	150	struct autofs_sb_info *sbi = autofs4_sbi(sb);
	151
	152	sb->s_fs_info = NULL;
	153
	154	if ( !sbi->catatonic )
	155	autofs4_catatonic_mode(sbi); /* Free wait queues, close pipe */
	156
104e49fc IK	157	/* Clean up and release dangling references */
	158	if (sbi)
	159	autofs4_force_release(sbi);
	160
1da177e4 LT	161	kfree(sbi);
	162
	163	DPRINTK("shutting down");
	164	}
	165
	166	static struct super_operations autofs4_sops = {
	167	.put_super = autofs4_put_super,
	168	.statfs = simple_statfs,
	169	};
	170
	171	enum {Opt_err, Opt_fd, Opt_uid, Opt_gid, Opt_pgrp, Opt_minproto, Opt_maxproto};
	172
	173	static match_table_t tokens = {
	174	{Opt_fd, "fd=%u"},
	175	{Opt_uid, "uid=%u"},
	176	{Opt_gid, "gid=%u"},
	177	{Opt_pgrp, "pgrp=%u"},
	178	{Opt_minproto, "minproto=%u"},
	179	{Opt_maxproto, "maxproto=%u"},
	180	{Opt_err, NULL}
	181	};
	182
	183	static int parse_options(char options, int pipefd, uid_t uid, gid_t gid,
	184	pid_t pgrp, int minproto, int *maxproto)
	185	{
	186	char *p;
	187	substring_t args[MAX_OPT_ARGS];
	188	int option;
	189
	190	*uid = current->uid;
	191	*gid = current->gid;
	192	*pgrp = process_group(current);
	193
	194	*minproto = AUTOFS_MIN_PROTO_VERSION;
	195	*maxproto = AUTOFS_MAX_PROTO_VERSION;
	196
	197	*pipefd = -1;
	198
	199	if (!options)
	200	return 1;
	201
	202	while ((p = strsep(&options, ",")) != NULL) {
	203	int token;
	204	if (!*p)
	205	continue;
	206
	207	token = match_token(p, tokens, args);
	208	switch (token) {
	209	case Opt_fd:
	210	if (match_int(args, pipefd))
	211	return 1;
	212	break;
	213	case Opt_uid:
	214	if (match_int(args, &option))
	215	return 1;
	216	*uid = option;
	217	break;
	218	case Opt_gid:
	219	if (match_int(args, &option))
	220	return 1;
	221	*gid = option;
	222	break;
	223	case Opt_pgrp:
	224	if (match_int(args, &option))
225	return 1;
226	*pgrp = option;
227	break;
228	case Opt_minproto:
229	if (match_int(args, &option))
230	return 1;
231	*minproto = option;
232	break;
233	case Opt_maxproto:
234	if (match_int(args, &option))
235	return 1;
236	*maxproto = option;
237	break;
238	default:
239	return 1;
240	}
241	}
242	return (*pipefd < 0);
243	}
244
245	static struct autofs_info autofs4_mkroot(struct autofs_sb_info sbi)
246	{
247	struct autofs_info *ino;
248
249	ino = autofs4_init_ino(NULL, sbi, S_IFDIR \| 0755);
250	if (!ino)
251	return NULL;
252
253	return ino;
254	}
255
256	int autofs4_fill_super(struct super_block s, void data, int silent)
257	{
258	struct inode * root_inode;
259	struct dentry * root;
260	struct file * pipe;
261	int pipefd;
262	struct autofs_sb_info *sbi;
263	struct autofs_info *ino;
264	int minproto, maxproto;
265
266	sbi = (struct autofs_sb_info ) kmalloc(sizeof(sbi), GFP_KERNEL);
267	if ( !sbi )
268	goto fail_unlock;
269	DPRINTK("starting up, sbi = %p",sbi);
270
271	memset(sbi, 0, sizeof(*sbi));
272
273	s->s_fs_info = sbi;
274	sbi->magic = AUTOFS_SBI_MAGIC;
104e49fc	275	sbi->root = NULL;
1da177e4 LT	276	sbi->catatonic = 0;
	277	sbi->exp_timeout = 0;
	278	sbi->oz_pgrp = process_group(current);
	279	sbi->sb = s;
	280	sbi->version = 0;
	281	sbi->sub_version = 0;
1d5599e3	282	mutex_init(&sbi->wq_mutex);
3a9720ce	283	spin_lock_init(&sbi->fs_lock);
1da177e4 LT	284	sbi->queues = NULL;
	285	s->s_blocksize = 1024;
	286	s->s_blocksize_bits = 10;
	287	s->s_magic = AUTOFS_SUPER_MAGIC;
	288	s->s_op = &autofs4_sops;
	289	s->s_time_gran = 1;
	290
	291	/*
	292	* Get the root inode and dentry, but defer checking for errors.
	293	*/
	294	ino = autofs4_mkroot(sbi);
	295	if (!ino)
	296	goto fail_free;
	297	root_inode = autofs4_get_inode(s, ino);
	298	kfree(ino);
	299	if (!root_inode)
	300	goto fail_free;
	301
	302	root_inode->i_op = &autofs4_root_inode_operations;
	303	root_inode->i_fop = &autofs4_root_operations;
	304	root = d_alloc_root(root_inode);
	305	pipe = NULL;
	306
	307	if (!root)
	308	goto fail_iput;
	309
	310	/* Can this call block? */
	311	if (parse_options(data, &pipefd,
	312	&root_inode->i_uid, &root_inode->i_gid,
	313	&sbi->oz_pgrp,
	314	&minproto, &maxproto)) {
	315	printk("autofs: called with bogus options\n");
	316	goto fail_dput;
	317	}
	318
	319	/* Couldn't this be tested earlier? */
	320	if (maxproto < AUTOFS_MIN_PROTO_VERSION \|\|
	321	minproto > AUTOFS_MAX_PROTO_VERSION) {
	322	printk("autofs: kernel does not match daemon version "
	323	"daemon (%d, %d) kernel (%d, %d)\n",
	324	minproto, maxproto,
	325	AUTOFS_MIN_PROTO_VERSION, AUTOFS_MAX_PROTO_VERSION);
	326	goto fail_dput;
	327	}
	328
	329	sbi->version = maxproto > AUTOFS_MAX_PROTO_VERSION ? AUTOFS_MAX_PROTO_VERSION : maxproto;
	330	sbi->sub_version = AUTOFS_PROTO_SUBVERSION;
	331
	332	DPRINTK("pipe fd = %d, pgrp = %u", pipefd, sbi->oz_pgrp);
	333	pipe = fget(pipefd);
	334
	335	if ( !pipe ) {
	336	printk("autofs: could not open pipe file descriptor\n");
	337	goto fail_dput;
	338	}
	339	if ( !pipe->f_op \|\| !pipe->f_op->write )
	340	goto fail_fput;
	341	sbi->pipe = pipe;
	342
104e49fc IK	343	/*
	344	* Take a reference to the root dentry so we get a chance to
	345	* clean up the dentry tree on umount.
	346	* See autofs4_force_release.
	347	*/
	348	sbi->root = dget(root);
	349
1da177e4 LT	350	/*
	351	* Success! Install the root dentry now to indicate completion.
	352	*/
	353	s->s_root = root;
	354	return 0;
	355
	356	/*
	357	* Failure ... clean up.
	358	*/
	359	fail_fput:
	360	printk("autofs: pipe file descriptor does not contain proper ops\n");
	361	fput(pipe);
	362	/* fall through */
	363	fail_dput:
	364	dput(root);
	365	goto fail_free;
	366	fail_iput:
	367	printk("autofs: get root dentry failed\n");
	368	iput(root_inode);
	369	fail_free:
	370	kfree(sbi);
	371	fail_unlock:
	372	return -EINVAL;
	373	}
	374
	375	struct inode autofs4_get_inode(struct super_block sb,
	376	struct autofs_info *inf)
	377	{
	378	struct inode *inode = new_inode(sb);
	379
	380	if (inode == NULL)
	381	return NULL;
	382
	383	inf->inode = inode;
	384	inode->i_mode = inf->mode;
	385	if (sb->s_root) {
	386	inode->i_uid = sb->s_root->d_inode->i_uid;
	387	inode->i_gid = sb->s_root->d_inode->i_gid;
	388	} else {
	389	inode->i_uid = 0;
	390	inode->i_gid = 0;
	391	}
	392	inode->i_blksize = PAGE_CACHE_SIZE;
	393	inode->i_blocks = 0;
	394	inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
	395
	396	if (S_ISDIR(inf->mode)) {
	397	inode->i_nlink = 2;
	398	inode->i_op = &autofs4_dir_inode_operations;
	399	inode->i_fop = &autofs4_dir_operations;
	400	} else if (S_ISLNK(inf->mode)) {
	401	inode->i_size = inf->size;
	402	inode->i_op = &autofs4_symlink_inode_operations;
	403	}
	404
	405	return inode;
	406	}