mirror of
https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux
synced 2025-11-01 03:23:39 +10:00
48b50624ae
- Pass iocb to ctx->end_write() instead of file + pos - Get rid of ctx->user_file, which is redundant most of the time - Instead pass iocb to backing_file_splice_read and backing_file_splice_write Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Signed-off-by: Amir Goldstein <amir73il@gmail.com>
45 lines
1.5 KiB
C
45 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Common helpers for stackable filesystems and backing files.
|
|
*
|
|
* Copyright (C) 2023 CTERA Networks.
|
|
*/
|
|
|
|
#ifndef _LINUX_BACKING_FILE_H
|
|
#define _LINUX_BACKING_FILE_H
|
|
|
|
#include <linux/file.h>
|
|
#include <linux/uio.h>
|
|
#include <linux/fs.h>
|
|
|
|
struct backing_file_ctx {
|
|
const struct cred *cred;
|
|
void (*accessed)(struct file *file);
|
|
void (*end_write)(struct kiocb *iocb, ssize_t);
|
|
};
|
|
|
|
struct file *backing_file_open(const struct path *user_path, int flags,
|
|
const struct path *real_path,
|
|
const struct cred *cred);
|
|
struct file *backing_tmpfile_open(const struct path *user_path, int flags,
|
|
const struct path *real_parentpath,
|
|
umode_t mode, const struct cred *cred);
|
|
ssize_t backing_file_read_iter(struct file *file, struct iov_iter *iter,
|
|
struct kiocb *iocb, int flags,
|
|
struct backing_file_ctx *ctx);
|
|
ssize_t backing_file_write_iter(struct file *file, struct iov_iter *iter,
|
|
struct kiocb *iocb, int flags,
|
|
struct backing_file_ctx *ctx);
|
|
ssize_t backing_file_splice_read(struct file *in, struct kiocb *iocb,
|
|
struct pipe_inode_info *pipe, size_t len,
|
|
unsigned int flags,
|
|
struct backing_file_ctx *ctx);
|
|
ssize_t backing_file_splice_write(struct pipe_inode_info *pipe,
|
|
struct file *out, struct kiocb *iocb,
|
|
size_t len, unsigned int flags,
|
|
struct backing_file_ctx *ctx);
|
|
int backing_file_mmap(struct file *file, struct vm_area_struct *vma,
|
|
struct backing_file_ctx *ctx);
|
|
|
|
#endif /* _LINUX_BACKING_FILE_H */
|