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fuse: create fuse_do_open() helper for CUSE 

Create a helper for sending an OPEN request that doesn't need a struct
inode pointer.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
This commit is contained in:
Miklos Szeredi 2009-04-28 16:56:37 +02:00
parent c7b7143c63
commit 91fe96b403
3 changed files with 42 additions and 27 deletions
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2
fs/fuse/dir.c
View File

@ -1103,7 +1103,7 @@ static void fuse_put_link(struct dentry *dentry, struct nameidata *nd, void *c)
static int fuse_dir_open(struct inode *inode, struct file *file)
{
return fuse_open_common(inode, file, 1);
return fuse_open_common(inode, file, true);
}
static int fuse_dir_release(struct inode *inode, struct file *file)

65
fs/fuse/file.c
View File

@ -15,10 +15,9 @@
static const struct file_operations fuse_direct_io_file_operations;
static int fuse_send_open(struct inode *inode, struct file *file, int isdir,
struct fuse_open_out *outargp)
static int fuse_send_open(struct fuse_conn *fc, u64 nodeid, struct file *file,
int opcode, struct fuse_open_out *outargp)
{
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_open_in inarg;
struct fuse_req *req;
int err;
@ -31,8 +30,8 @@ static int fuse_send_open(struct inode *inode, struct file *file, int isdir,
inarg.flags = file->f_flags & ~(O_CREAT | O_EXCL | O_NOCTTY);
if (!fc->atomic_o_trunc)
inarg.flags &= ~O_TRUNC;
req->in.h.opcode = isdir ? FUSE_OPENDIR : FUSE_OPEN;
req->in.h.nodeid = get_node_id(inode);
req->in.h.opcode = opcode;
req->in.h.nodeid = nodeid;
req->in.numargs = 1;
req->in.args[0].size = sizeof(inarg);
req->in.args[0].value = &inarg;
@ -102,6 +101,35 @@ static void fuse_file_put(struct fuse_file *ff)
}
}
static int fuse_do_open(struct fuse_conn *fc, u64 nodeid, struct file *file,
bool isdir)
{
struct fuse_open_out outarg;
struct fuse_file *ff;
int err;
int opcode = isdir ? FUSE_OPENDIR : FUSE_OPEN;
ff = fuse_file_alloc(fc);
if (!ff)
return -ENOMEM;
err = fuse_send_open(fc, nodeid, file, opcode, &outarg);
if (err) {
fuse_file_free(ff);
return err;
}
if (isdir)
outarg.open_flags &= ~FOPEN_DIRECT_IO;
ff->fh = outarg.fh;
ff->nodeid = nodeid;
ff->open_flags = outarg.open_flags;
file->private_data = fuse_file_get(ff);
return 0;
}
void fuse_finish_open(struct inode *inode, struct file *file)
{
struct fuse_file *ff = file->private_data;
@ -114,11 +142,9 @@ void fuse_finish_open(struct inode *inode, struct file *file)
nonseekable_open(inode, file);
}
int fuse_open_common(struct inode *inode, struct file *file, int isdir)
int fuse_open_common(struct inode *inode, struct file *file, bool isdir)
{
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_open_out outarg;
struct fuse_file *ff;
int err;
/* VFS checks this, but only _after_ ->open() */
@ -129,24 +155,13 @@ int fuse_open_common(struct inode *inode, struct file *file, int isdir)
if (err)
return err;
ff = fuse_file_alloc(fc);
if (!ff)
return -ENOMEM;
err = fuse_send_open(inode, file, isdir, &outarg);
err = fuse_do_open(fc, get_node_id(inode), file, isdir);
if (err)
fuse_file_free(ff);
else {
if (isdir)
outarg.open_flags &= ~FOPEN_DIRECT_IO;
ff->fh = outarg.fh;
ff->nodeid = get_node_id(inode);
ff->open_flags = outarg.open_flags;
file->private_data = fuse_file_get(ff);
fuse_finish_open(inode, file);
}
return err;
return err;
fuse_finish_open(inode, file);
return 0;
}
void fuse_release_fill(struct fuse_file *ff, int flags, int opcode)
@ -201,7 +216,7 @@ int fuse_release_common(struct inode *inode, struct file *file, int isdir)
static int fuse_open(struct inode *inode, struct file *file)
{
return fuse_open_common(inode, file, 0);
return fuse_open_common(inode, file, false);
}
static int fuse_release(struct inode *inode, struct file *file)

2
fs/fuse/fuse_i.h
View File

@ -528,7 +528,7 @@ void fuse_read_fill(struct fuse_req *req, struct file *file,
/**
* Send OPEN or OPENDIR request
*/
int fuse_open_common(struct inode *inode, struct file *file, int isdir);
int fuse_open_common(struct inode *inode, struct file *file, bool isdir);
struct fuse_file *fuse_file_alloc(struct fuse_conn *fc);
struct fuse_file *fuse_file_get(struct fuse_file *ff);