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Commit ba87f678 authored by Jebaitedneko's avatar Jebaitedneko Committed by Gagan Malvi
Browse files

char: srandom: expose sdevice_{read,write} and sfops for treewide usage 



* de-staticify, externify and move the prototypes to srandom.h
* constify sfops
* also export sdevice_read and sdevice_write as symbols

Signed-off-by: default avatarJebaitedneko <jebaitedneko@gmail.com>
parent 344a9d57

drivers/char/srandom/srandom.c

+6 −5
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 
#include <linux/mutex.h>

#include <linux/delay.h>

#include <linux/kthread.h>

#include "srandom.h"



#define DRIVER_AUTHOR "Jonathan Senkerik <josenk@jintegrate.co>"

#define DRIVER_DESC   "Improved random number generator."
@@ -57,8 +58,6 @@ 
 */

static int device_open(struct inode *, struct file *);

static int device_release(struct inode *, struct file *);

static ssize_t sdevice_read(struct file *, char *, size_t, loff_t *);

static ssize_t sdevice_write(struct file *, const char *, size_t, loff_t *);

static uint64_t xorshft64(void);

static uint64_t xorshft128(void);

static int nextbuffer(void);
@@ -74,7 +73,7 @@ static int work_thread(void *data); 
/*

 * Global variables are declared as static, so are global within the file.

 */

static struct file_operations sfops = {

const struct file_operations sfops = {

        .owner   = THIS_MODULE,

        .open    = device_open,

        .read    = sdevice_read,
@@ -279,7 +278,7 @@ static int device_release(struct inode *inode, struct file *file) 
/*

 * Called when a process reads from the device.

 */

static ssize_t sdevice_read(struct file * file, char * buf, size_t count, loff_t *ppos)

ssize_t sdevice_read(struct file * file, char * buf, size_t count, loff_t *ppos)

{

        char *new_buf;                 /* Buffer to hold numbers to send */

        int ret, counter;
@@ -425,11 +424,12 @@ static ssize_t sdevice_read(struct file * file, char * buf, size_t count, loff_t 
        return count;

}



EXPORT_SYMBOL(sdevice_read);



/*

 * Called when someone tries to write to /dev/srandom device

 */

static ssize_t sdevice_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)

ssize_t sdevice_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)

{



        char *newdata;
@@ -461,6 +461,7 @@ static ssize_t sdevice_write(struct file *file, const char __user *buf, size_t c 
        return count;

}



EXPORT_SYMBOL(sdevice_write);





/*

drivers/char/srandom/srandom.h

0 → 100644
+4 −0
Original line number Diff line number Diff line 
#include <linux/fs.h>

extern const struct file_operations sfops;

extern ssize_t sdevice_read(struct file *, char *, size_t, loff_t *);

extern ssize_t sdevice_write(struct file *, const char *, size_t, loff_t *);