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devfs: use iovec_iterator internally

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Matheus
2024-09-21 13:53:39 -03:00
parent 01c883917f
commit e8c2f1fbf3
14 changed files with 149 additions and 97 deletions
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kernel-src/io/pseudodevices.c
+12 -10
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@@ -4,22 +4,21 @@
#include <logging.h>
#include <kernel/timekeeper.h>
static int null_write(int minor, void *buffer, size_t count, uintmax_t offset, int flags, size_t *wcount) {
static int null_write(int minor, iovec_iterator_t *iovec_iterator, size_t count, uintmax_t offset, int flags, size_t *wcount) {
*wcount = count;
return 0;
}
static int full_write(int minor, void *buffer, size_t count, uintmax_t offset, int flags, size_t *wcount) {
static int full_write(int minor, iovec_iterator_t *iovec_iterator, size_t count, uintmax_t offset, int flags, size_t *wcount) {
return ENOSPC;
}
static int zero_read(int minor, void *buffer, size_t count, uintmax_t offset, int flags, size_t *rcount) {
static int zero_read(int minor, iovec_iterator_t *iovec_iterator, size_t count, uintmax_t offset, int flags, size_t *rcount) {
*rcount = count;
memset(buffer, 0, count);
return 0;
return iovec_iterator_memset(iovec_iterator, 0, count);
}
static int null_read(int minor, void *buffer, size_t count, uintmax_t offset, int flags, size_t *rcount) {
static int null_read(int minor, iovec_iterator_t *iovec_iterator, size_t count, uintmax_t offset, int flags, size_t *rcount) {
*rcount = 0;
return 0;
}
@@ -36,10 +35,13 @@ static uint8_t getrand8() {
return current & 0xff;
}
static int urandom_read(int minor, void *_buffer, size_t count, uintmax_t offset, int flags, size_t *rcount) {
uint8_t *buffer = _buffer;
for (int i = 0; i < count; ++i)
buffer[i] = getrand8();
static int urandom_read(int minor, iovec_iterator_t *iovec_iterator, size_t count, uintmax_t offset, int flags, size_t *rcount) {
for (int i = 0; i < count; ++i) {
uint8_t byte = getrand8();
int error = iovec_iterator_copy_from_buffer(iovec_iterator, &byte, sizeof(byte));
if (error)
return error;
}
*rcount = count;
return 0;