Commit ac632f5b authored by Luis de Bethencourt's avatar Luis de Bethencourt
Browse files

befs: add NFS export support 



Implement mandatory export_operations, so it is possible to export befs via
nfs.

Signed-off-by: default avatarLuis de Bethencourt <luisbg@osg.samsung.com>
parent e60f749b

fs/befs/linuxvfs.c

+38 −0
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ 
#include <linux/parser.h>

#include <linux/namei.h>

#include <linux/sched.h>

#include <linux/exportfs.h>



#include "befs.h"

#include "btree.h"
@@ -52,6 +53,10 @@ static void befs_put_super(struct super_block *); 
static int befs_remount(struct super_block *, int *, char *);

static int befs_statfs(struct dentry *, struct kstatfs *);

static int parse_options(char *, struct befs_mount_options *);

static struct dentry *befs_fh_to_dentry(struct super_block *sb,

				struct fid *fid, int fh_len, int fh_type);

static struct dentry *befs_fh_to_parent(struct super_block *sb,

				struct fid *fid, int fh_len, int fh_type);



static const struct super_operations befs_sops = {

	.alloc_inode	= befs_alloc_inode,	/* allocate a new inode */
@@ -84,6 +89,11 @@ static const struct address_space_operations befs_symlink_aops = { 
	.readpage	= befs_symlink_readpage,

};



static const struct export_operations befs_export_operations = {

	.fh_to_dentry	= befs_fh_to_dentry,

	.fh_to_parent	= befs_fh_to_parent,

};



/*

 * Called by generic_file_read() to read a page of data

 *
@@ -629,6 +639,33 @@ befs_nls2utf(struct super_block *sb, const char *in, 
	return -EILSEQ;

}



static struct inode *befs_nfs_get_inode(struct super_block *sb, uint64_t ino,

					 uint32_t generation)

{

	/* No need to handle i_generation */

	return befs_iget(sb, ino);

}



/*

 * Map a NFS file handle to a corresponding dentry

 */

static struct dentry *befs_fh_to_dentry(struct super_block *sb,

				struct fid *fid, int fh_len, int fh_type)

{

	return generic_fh_to_dentry(sb, fid, fh_len, fh_type,

				    befs_nfs_get_inode);

}



/*

 * Find the parent for a file specified by NFS handle

 */

static struct dentry *befs_fh_to_parent(struct super_block *sb,

				struct fid *fid, int fh_len, int fh_type)

{

	return generic_fh_to_parent(sb, fid, fh_len, fh_type,

				    befs_nfs_get_inode);

}



enum {

	Opt_uid, Opt_gid, Opt_charset, Opt_debug, Opt_err,

};
@@ -829,6 +866,7 @@ befs_fill_super(struct super_block *sb, void *data, int silent) 
	/* Set real blocksize of fs */

	sb_set_blocksize(sb, (ulong) befs_sb->block_size);

	sb->s_op = &befs_sops;

	sb->s_export_op = &befs_export_operations;

	root = befs_iget(sb, iaddr2blockno(sb, &(befs_sb->root_dir)));

	if (IS_ERR(root)) {

		ret = PTR_ERR(root);