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Commit 0aa7c699 authored by Miklos Szeredi's avatar Miklos Szeredi Committed by Linus Torvalds
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[PATCH] fuse: clean up fuse_lookup() 



Simplify fuse_lookup() and related functions.

Signed-off-by: default avatarMiklos Szeredi <miklos@szeredi.hu>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 524e3b62

fs/fuse/dir.c

+23 −52
Original line number Diff line number Diff line
@@ -13,7 +13,6 @@ 
#include <linux/gfp.h>

#include <linux/sched.h>

#include <linux/namei.h>

#include <linux/mount.h>



static inline unsigned long time_to_jiffies(unsigned long sec,

					    unsigned long nsec)
@@ -22,6 +21,13 @@ static inline unsigned long time_to_jiffies(unsigned long sec, 
	return jiffies + timespec_to_jiffies(&ts);

}



static void fuse_change_timeout(struct dentry *entry, struct fuse_entry_out *o)

{

	struct fuse_inode *fi = get_fuse_inode(entry->d_inode);

	entry->d_time = time_to_jiffies(o->entry_valid, o->entry_valid_nsec);

	fi->i_time = time_to_jiffies(o->attr_valid, o->attr_valid_nsec);

}



static void fuse_lookup_init(struct fuse_req *req, struct inode *dir,

			     struct dentry *entry,

			     struct fuse_entry_out *outarg)
@@ -66,10 +72,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd) 
			return 0;



		fuse_change_attributes(inode, &outarg.attr);

		entry->d_time = time_to_jiffies(outarg.entry_valid,

						outarg.entry_valid_nsec);

		fi->i_time = time_to_jiffies(outarg.attr_valid,

					     outarg.attr_valid_nsec);

		fuse_change_timeout(entry, &outarg);

	}

	return 1;

}
@@ -96,8 +99,8 @@ static struct dentry_operations fuse_dentry_operations = { 
	.d_revalidate	= fuse_dentry_revalidate,

};



static int fuse_lookup_iget(struct inode *dir, struct dentry *entry,

			    struct inode **inodep)

static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry,

				  struct nameidata *nd)

{

	int err;

	struct fuse_entry_out outarg;
@@ -106,11 +109,11 @@ static int fuse_lookup_iget(struct inode *dir, struct dentry *entry, 
	struct fuse_req *req;



	if (entry->d_name.len > FUSE_NAME_MAX)

		return -ENAMETOOLONG;

		return ERR_PTR(-ENAMETOOLONG);



	req = fuse_get_request(fc);

	if (!req)

		return -EINTR;

		return ERR_PTR(-EINTR);



	fuse_lookup_init(req, dir, entry, &outarg);

	request_send(fc, req);
@@ -122,24 +125,22 @@ static int fuse_lookup_iget(struct inode *dir, struct dentry *entry, 
				  &outarg.attr);

		if (!inode) {

			fuse_send_forget(fc, req, outarg.nodeid, 1);

			return -ENOMEM;

			return ERR_PTR(-ENOMEM);

		}

	}

	fuse_put_request(fc, req);

	if (err && err != -ENOENT)

		return err;

		return ERR_PTR(err);



	if (inode) {

		struct fuse_inode *fi = get_fuse_inode(inode);

		entry->d_time =	time_to_jiffies(outarg.entry_valid,

						outarg.entry_valid_nsec);

		fi->i_time = time_to_jiffies(outarg.attr_valid,

					     outarg.attr_valid_nsec);

	if (inode && dir_alias(inode)) {

		iput(inode);

		return ERR_PTR(-EIO);

	}



	d_add(entry, inode);

	entry->d_op = &fuse_dentry_operations;

	*inodep = inode;

	return 0;

	if (inode)

		fuse_change_timeout(entry, &outarg);

	return NULL;

}



void fuse_invalidate_attr(struct inode *inode)
@@ -163,7 +164,6 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry, int mode, 
	struct fuse_open_in inarg;

	struct fuse_open_out outopen;

	struct fuse_entry_out outentry;

	struct fuse_inode *fi;

	struct fuse_file *ff;

	struct file *file;

	int flags = nd->intent.open.flags - 1;
@@ -224,13 +224,8 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry, int mode, 
		goto out_put_request;

	}

	fuse_put_request(fc, req);

	entry->d_time =	time_to_jiffies(outentry.entry_valid,

					outentry.entry_valid_nsec);

	fi = get_fuse_inode(inode);

	fi->i_time = time_to_jiffies(outentry.attr_valid,

				     outentry.attr_valid_nsec);



	d_instantiate(entry, inode);

	fuse_change_timeout(entry, &outentry);

	file = lookup_instantiate_filp(nd, entry, generic_file_open);

	if (IS_ERR(file)) {

		ff->fh = outopen.fh;
@@ -254,7 +249,6 @@ static int create_new_entry(struct fuse_conn *fc, struct fuse_req *req, 
{

	struct fuse_entry_out outarg;

	struct inode *inode;

	struct fuse_inode *fi;

	int err;



	req->in.h.nodeid = get_node_id(dir);
@@ -286,14 +280,8 @@ static int create_new_entry(struct fuse_conn *fc, struct fuse_req *req, 
		return -EIO;

	}



	entry->d_time = time_to_jiffies(outarg.entry_valid,

					outarg.entry_valid_nsec);



	fi = get_fuse_inode(inode);

	fi->i_time = time_to_jiffies(outarg.attr_valid,

				     outarg.attr_valid_nsec);



	d_instantiate(entry, inode);

	fuse_change_timeout(entry, &outarg);

	fuse_invalidate_attr(dir);

	return 0;

}
@@ -883,23 +871,6 @@ static int fuse_getattr(struct vfsmount *mnt, struct dentry *entry, 
	return err;

}



static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry,

				  struct nameidata *nd)

{

	struct inode *inode;

	int err;



	err = fuse_lookup_iget(dir, entry, &inode);

	if (err)

		return ERR_PTR(err);

	if (inode && dir_alias(inode)) {

		iput(inode);

		return ERR_PTR(-EIO);

	}

	d_add(entry, inode);

	return NULL;

}



static int fuse_setxattr(struct dentry *entry, const char *name,

			 const void *value, size_t size, int flags)

{