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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/acpi/dev.c
+10 -6
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@@ -28,7 +28,7 @@ static int internalpoll(polldata_t *data, int events) {
return revents;
}
static int read(int minor, void *buffer, size_t size, uintmax_t offset, int flags, size_t *readc) {
static int read(int minor, iovec_iterator_t *iovec_iterator, size_t size, uintmax_t offset, int flags, size_t *readc) {
*readc = 0;
if (size < 1)
@@ -62,7 +62,7 @@ static int read(int minor, void *buffer, size_t size, uintmax_t offset, int flag
// this abuses a behavior of how the ringbuffer works to not need a lock for reading
// (as it would need interrupts to be off)
*readc = ringbuffer_read(&ringbuffer, buffer, size);
*readc = iovec_iterator_read_from_ringbuffer(iovec_iterator, &ringbuffer, size);
if (*readc == RINGBUFFER_USER_COPY_FAILED)
error = EFAULT;
@@ -73,14 +73,18 @@ static int read(int minor, void *buffer, size_t size, uintmax_t offset, int flag
return error;
}
static int write(int minor, void *buffer, size_t size, uintmax_t offset, int flags, size_t *writec) {
static int write(int minor, iovec_iterator_t *iovec_iterator, size_t size, uintmax_t offset, int flags, size_t *writec) {
if (size < 1) {
*writec = 0;
return 0;
}
char *c = buffer;
switch (*c) {
char c;
int error = iovec_iterator_copy_to_buffer(iovec_iterator, &c, 1);
if (error)
return error;
switch (c) {
case 'p':
acpi_poweroff();
break;
@@ -89,7 +93,7 @@ static int write(int minor, void *buffer, size_t size, uintmax_t offset, int fla
break;
}
return EIO;
return error;
}
static int poll(int minor, polldata_t *data, int events) {