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This commit is contained in:
Simon Gardling
2024-09-10 13:03:02 -04:00
parent 53c617d779
commit d66450e427
381 changed files with 28864 additions and 34170 deletions
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118
kern/dev/generic/random.c
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@@ -53,106 +53,90 @@ static struct random_softc *the_random = NULL;
* VFS device functions.
* open: allow reading only.
*/
static
int
randeachopen(struct device *dev, int openflags)
{
(void)dev;
static int randeachopen(struct device *dev, int openflags) {
(void)dev;
if (openflags != O_RDONLY) {
return EIO;
}
if (openflags != O_RDONLY) {
return EIO;
}
return 0;
return 0;
}
/*
* VFS I/O function. Hand off to implementation.
*/
static
int
randio(struct device *dev, struct uio *uio)
{
struct random_softc *rs = dev->d_data;
static int randio(struct device *dev, struct uio *uio) {
struct random_softc *rs = dev->d_data;
if (uio->uio_rw != UIO_READ) {
return EIO;
}
if (uio->uio_rw != UIO_READ) {
return EIO;
}
return rs->rs_read(rs->rs_devdata, uio);
return rs->rs_read(rs->rs_devdata, uio);
}
/*
* VFS ioctl function.
*/
static
int
randioctl(struct device *dev, int op, userptr_t data)
{
/*
* We don't support any ioctls.
*/
(void)dev;
(void)op;
(void)data;
return EIOCTL;
static int randioctl(struct device *dev, int op, userptr_t data) {
/*
* We don't support any ioctls.
*/
(void)dev;
(void)op;
(void)data;
return EIOCTL;
}
static const struct device_ops random_devops = {
.devop_eachopen = randeachopen,
.devop_io = randio,
.devop_ioctl = randioctl,
.devop_eachopen = randeachopen,
.devop_io = randio,
.devop_ioctl = randioctl,
};
/*
* Config function.
*/
int
config_random(struct random_softc *rs, int unit)
{
int result;
int config_random(struct random_softc *rs, int unit) {
int result;
/* We use only the first random device. */
if (unit!=0) {
return ENODEV;
}
/* We use only the first random device. */
if (unit != 0) {
return ENODEV;
}
KASSERT(the_random==NULL);
the_random = rs;
KASSERT(the_random == NULL);
the_random = rs;
rs->rs_dev.d_ops = &random_devops;
rs->rs_dev.d_blocks = 0;
rs->rs_dev.d_blocksize = 1;
rs->rs_dev.d_data = rs;
rs->rs_dev.d_ops = &random_devops;
rs->rs_dev.d_blocks = 0;
rs->rs_dev.d_blocksize = 1;
rs->rs_dev.d_data = rs;
/* Add the VFS device structure to the VFS device list. */
result = vfs_adddev("random", &rs->rs_dev, 0);
if (result) {
return result;
}
/* Add the VFS device structure to the VFS device list. */
result = vfs_adddev("random", &rs->rs_dev, 0);
if (result) {
return result;
}
return 0;
return 0;
}
/*
* Random number functions exported to the rest of the kernel.
*/
uint32_t
random(void)
{
if (the_random==NULL) {
panic("No random device\n");
}
return the_random->rs_random(the_random->rs_devdata);
uint32_t random(void) {
if (the_random == NULL) {
panic("No random device\n");
}
return the_random->rs_random(the_random->rs_devdata);
}
uint32_t
randmax(void)
{
if (the_random==NULL) {
panic("No random device\n");
}
return the_random->rs_randmax(the_random->rs_devdata);
uint32_t randmax(void) {
if (the_random == NULL) {
panic("No random device\n");
}
return the_random->rs_randmax(the_random->rs_devdata);
}