include/linux/backing-file.h

Source file repositories/reference/linux-study-clean/include/linux/backing-file.h

File Facts

System
Linux kernel
Corpus path
include/linux/backing-file.h
Extension
.h
Size
1545 bytes
Lines
45
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

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 file *user_file, int flags,
			       const struct path *real_path,
			       const struct cred *cred);
struct file *backing_tmpfile_open(const struct file *user_file, 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 */

Annotation

Implementation Notes