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Index of /FSS-OZR/root/usr/share/doc/perl-threads-shared/examples
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/*
Hardware Random Number Generator
Please read Documentation/admin-guide/hw_random.rst for details on use.
----------------------------------------------------------
This software may be used and distributed according to the terms
of the GNU General Public License, incorporated herein by reference.
*/
#ifndef LINUX_HWRANDOM_H_
#define LINUX_HWRANDOM_H_
#include
#include
#include
#include
/**
* struct hwrng - Hardware Random Number Generator driver
* @name: Unique RNG name.
* @init: Initialization callback (can be NULL).
* @cleanup: Cleanup callback (can be NULL).
* @data_present: Callback to determine if data is available
* on the RNG. If NULL, it is assumed that
* there is always data available. *OBSOLETE*
* @data_read: Read data from the RNG device.
* Returns the number of lower random bytes in "data".
* Must not be NULL. *OBSOLETE*
* @read: New API. drivers can fill up to max bytes of data
* into the buffer. The buffer is aligned for any type
* and max is a multiple of 4 and >= 32 bytes.
* @priv: Private data, for use by the RNG driver.
* @quality: Estimation of true entropy in RNG's bitstream
* (in bits of entropy per 1024 bits of input;
* valid values: 1 to 1024, or 0 for maximum).
*/
struct hwrng {
const char *name;
int (*init)(struct hwrng *rng);
void (*cleanup)(struct hwrng *rng);
int (*data_present)(struct hwrng *rng, int wait);
int (*data_read)(struct hwrng *rng, u32 *data);
int (*read)(struct hwrng *rng, void *data, size_t max, bool wait);
unsigned long priv;
unsigned short quality;
/* internal. */
struct list_head list;
struct kref ref;
struct completion cleanup_done;
struct completion dying;
};
struct device;
/** Register a new Hardware Random Number Generator driver. */
extern int hwrng_register(struct hwrng *rng);
extern int devm_hwrng_register(struct device *dev, struct hwrng *rng);
/** Unregister a Hardware Random Number Generator driver. */
extern void hwrng_unregister(struct hwrng *rng);
extern void devm_hwrng_unregister(struct device *dve, struct hwrng *rng);
extern long hwrng_msleep(struct hwrng *rng, unsigned int msecs);
#endif /* LINUX_HWRANDOM_H_ */
File not found.
. a /* 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
#include
#include
struct backing_file_ctx {
const struct cred *cred;
struct file *user_file;
void (*accessed)(struct file *);
void (*end_write)(struct file *);
};
struct file *backing_file_open(const struct file *user_file, int flags,
const struct path *real_path,
const struct