diff --git a/fs/affs/affs.h b/fs/affs/affs.h index efe683947df9d0b8de61f54248b4402f2d6bbfe0..1b5542818b2c0b2209974e23b7aa3dd014704c66 100644 --- a/fs/affs/affs.h +++ b/fs/affs/affs.h @@ -162,6 +162,7 @@ extern void affs_free_bitmap(struct super_block *sb); /* namei.c */ +extern const struct export_operations affs_export_ops; extern int affs_hash_name(struct super_block *sb, const u8 *name, unsigned int len); extern struct dentry *affs_lookup(struct inode *dir, struct dentry *dentry, unsigned int); extern int affs_unlink(struct inode *dir, struct dentry *dentry); diff --git a/fs/affs/namei.c b/fs/affs/namei.c index 29186d29a3b611809f70b1ee7ba0cce4eb85d824..04c3156ff4119b4cc6b7cfde8cddbcacffc303c6 100644 --- a/fs/affs/namei.c +++ b/fs/affs/namei.c @@ -9,6 +9,7 @@ */ #include "affs.h" +#include typedef int (*toupper_t)(int); @@ -465,3 +466,42 @@ affs_rename(struct inode *old_dir, struct dentry *old_dentry, affs_brelse(bh); return retval; } + +static struct inode *affs_nfs_get_inode(struct super_block *sb, u64 ino, + u32 generation) +{ + struct inode *inode; + + if (!affs_validblock(sb, ino)) + return ERR_PTR(-ESTALE); + + inode = affs_iget(sb, ino); + if (IS_ERR(inode)) + return ERR_CAST(inode); + + if (generation && inode->i_generation != generation) { + iput(inode); + return ERR_PTR(-ESTALE); + } + + return inode; +} + +static struct dentry *affs_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, + affs_nfs_get_inode); +} + +static struct dentry *affs_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, + affs_nfs_get_inode); +} + +const struct export_operations affs_export_ops = { + .fh_to_dentry = affs_fh_to_dentry, + .fh_to_parent = affs_fh_to_parent, +}; diff --git a/fs/affs/super.c b/fs/affs/super.c index d6384863192ca5c47a3593680c59713dfff8ad29..98bd95291694552c33235b5ab20a6a479cd08025 100644 --- a/fs/affs/super.c +++ b/fs/affs/super.c @@ -507,6 +507,7 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent) return -ENOMEM; } + sb->s_export_op = &affs_export_ops; pr_debug("s_flags=%lX\n", sb->s_flags); return 0; }