linux/io_uring/filetable.h

// SPDX-License-Identifier: GPL-2.0
#ifndef IOU_FILE_TABLE_H
#define IOU_FILE_TABLE_H

#include <linux/file.h>
#include <linux/io_uring_types.h>

bool io_alloc_file_tables(struct io_file_table *table, unsigned nr_files);
void io_free_file_tables(struct io_file_table *table);

int io_fixed_fd_install(struct io_kiocb *req, unsigned int issue_flags,
			struct file *file, unsigned int file_slot);
int __io_fixed_fd_install(struct io_ring_ctx *ctx, struct file *file,
				unsigned int file_slot);
int io_fixed_fd_remove(struct io_ring_ctx *ctx, unsigned int offset);

int io_register_file_alloc_range(struct io_ring_ctx *ctx,
				 struct io_uring_file_index_range __user *arg);

io_req_flags_t io_file_get_flags(struct file *file);

static inline void io_file_bitmap_clear(struct io_file_table *table, int bit)
{ … }

static inline void io_file_bitmap_set(struct io_file_table *table, int bit)
{ … }

static inline struct io_fixed_file *
io_fixed_file_slot(struct io_file_table *table, unsigned i)
{ … }

#define FFS_NOWAIT …
#define FFS_ISREG …
#define FFS_MASK …

static inline unsigned int io_slot_flags(struct io_fixed_file *slot)
{ … }

static inline struct file *io_slot_file(struct io_fixed_file *slot)
{ … }

static inline struct file *io_file_from_index(struct io_file_table *table,
					      int index)
{ … }

static inline void io_fixed_file_set(struct io_fixed_file *file_slot,
				     struct file *file)
{ … }

static inline void io_reset_alloc_hint(struct io_ring_ctx *ctx)
{ … }

static inline void io_file_table_set_alloc_range(struct io_ring_ctx *ctx,
						 unsigned off, unsigned len)
{ … }

#endif