Contributors: 6
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Amir Goldstein |
149 |
59.13% |
8 |
38.10% |
| Miklos Szeredi |
55 |
21.83% |
6 |
28.57% |
| Al Viro |
33 |
13.10% |
4 |
19.05% |
| David Howells |
9 |
3.57% |
1 |
4.76% |
| Peter Staubach |
3 |
1.19% |
1 |
4.76% |
| Linus Torvalds (pre-git) |
3 |
1.19% |
1 |
4.76% |
| Total |
252 |
|
21 |
|
/* 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;
struct file *user_file;
void (*accessed)(struct file *);
void (*end_write)(struct file *, loff_t, 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, loff_t *ppos,
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, loff_t *ppos, 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 */