linux/fs/fat/nfs.c

// SPDX-License-Identifier: GPL-2.0-only
/* fs/fat/nfs.c
 */

#include <linux/exportfs.h>
#include "fat.h"

struct fat_fid { … };

#define FAT_FID_SIZE_WITHOUT_PARENT …
#define FAT_FID_SIZE_WITH_PARENT …

/*
 * Look up a directory inode given its starting cluster.
 */
static struct inode *fat_dget(struct super_block *sb, int i_logstart)
{ … }

static struct inode *fat_ilookup(struct super_block *sb, u64 ino, loff_t i_pos)
{ … }

static struct inode *__fat_nfs_get_inode(struct super_block *sb,
				       u64 ino, u32 generation, loff_t i_pos)
{ … }

static struct inode *fat_nfs_get_inode(struct super_block *sb,
				       u64 ino, u32 generation)
{ … }

static int
fat_encode_fh_nostale(struct inode *inode, __u32 *fh, int *lenp,
		      struct inode *parent)
{ … }

/*
 * Map a NFS file handle to a corresponding dentry.
 * The dentry may or may not be connected to the filesystem root.
 */
static struct dentry *fat_fh_to_dentry(struct super_block *sb, struct fid *fid,
				int fh_len, int fh_type)
{ … }

static struct dentry *fat_fh_to_dentry_nostale(struct super_block *sb,
					       struct fid *fh, int fh_len,
					       int fh_type)
{ … }

/*
 * Find the parent for a file specified by NFS handle.
 * This requires that the handle contain the i_ino of the parent.
 */
static struct dentry *fat_fh_to_parent(struct super_block *sb, struct fid *fid,
				int fh_len, int fh_type)
{ … }

static struct dentry *fat_fh_to_parent_nostale(struct super_block *sb,
					       struct fid *fh, int fh_len,
					       int fh_type)
{ … }

/*
 * Rebuild the parent for a directory that is not connected
 *  to the filesystem root
 */
static
struct inode *fat_rebuild_parent(struct super_block *sb, int parent_logstart)
{ … }

/*
 * Find the parent for a directory that is not currently connected to
 * the filesystem root.
 *
 * On entry, the caller holds d_inode(child_dir)->i_mutex.
 */
static struct dentry *fat_get_parent(struct dentry *child_dir)
{ … }

const struct export_operations fat_export_ops = …;

const struct export_operations fat_export_ops_nostale = …;