aboutsummaryrefslogtreecommitdiff
path: root/chardev/char-win.c
diff options
context:
space:
mode:
Diffstat (limited to 'chardev/char-win.c')
-rw-r--r--chardev/char-win.c95
1 files changed, 36 insertions, 59 deletions
diff --git a/chardev/char-win.c b/chardev/char-win.c
index e4b6957ded..05518e0958 100644
--- a/chardev/char-win.c
+++ b/chardev/char-win.c
@@ -24,23 +24,30 @@
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "qapi/error.h"
-#include "char-win.h"
+#include "chardev/char-win.h"
-static void win_chr_readfile(Chardev *chr)
+static void win_chr_read(Chardev *chr, DWORD len)
{
WinChardev *s = WIN_CHARDEV(chr);
-
+ int max_size = qemu_chr_be_can_write(chr);
int ret, err;
uint8_t buf[CHR_READ_BUF_LEN];
DWORD size;
+ if (len > max_size) {
+ len = max_size;
+ }
+ if (len == 0) {
+ return;
+ }
+
ZeroMemory(&s->orecv, sizeof(s->orecv));
s->orecv.hEvent = s->hrecv;
- ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
+ ret = ReadFile(s->file, buf, len, &size, &s->orecv);
if (!ret) {
err = GetLastError();
if (err == ERROR_IO_PENDING) {
- ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
+ ret = GetOverlappedResult(s->file, &s->orecv, &size, TRUE);
}
}
@@ -49,46 +56,22 @@ static void win_chr_readfile(Chardev *chr)
}
}
-static void win_chr_read(Chardev *chr)
-{
- WinChardev *s = WIN_CHARDEV(chr);
-
- if (s->len > s->max_size) {
- s->len = s->max_size;
- }
- if (s->len == 0) {
- return;
- }
-
- win_chr_readfile(chr);
-}
-
-static int win_chr_read_poll(Chardev *chr)
-{
- WinChardev *s = WIN_CHARDEV(chr);
-
- s->max_size = qemu_chr_be_can_write(chr);
- return s->max_size;
-}
-
-static int win_chr_poll(void *opaque)
+static int win_chr_serial_poll(void *opaque)
{
Chardev *chr = CHARDEV(opaque);
WinChardev *s = WIN_CHARDEV(opaque);
COMSTAT status;
DWORD comerr;
- ClearCommError(s->hcom, &comerr, &status);
+ ClearCommError(s->file, &comerr, &status);
if (status.cbInQue > 0) {
- s->len = status.cbInQue;
- win_chr_read_poll(chr);
- win_chr_read(chr);
+ win_chr_read(chr, status.cbInQue);
return 1;
}
return 0;
}
-int win_chr_init(Chardev *chr, const char *filename, Error **errp)
+int win_chr_serial_init(Chardev *chr, const char *filename, Error **errp)
{
WinChardev *s = WIN_CHARDEV(chr);
COMMCONFIG comcfg;
@@ -108,15 +91,15 @@ int win_chr_init(Chardev *chr, const char *filename, Error **errp)
goto fail;
}
- s->hcom = CreateFile(filename, GENERIC_READ | GENERIC_WRITE, 0, NULL,
+ s->file = CreateFile(filename, GENERIC_READ | GENERIC_WRITE, 0, NULL,
OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
- if (s->hcom == INVALID_HANDLE_VALUE) {
+ if (s->file == INVALID_HANDLE_VALUE) {
error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
- s->hcom = NULL;
+ s->file = NULL;
goto fail;
}
- if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
+ if (!SetupComm(s->file, NRECVBUF, NSENDBUF)) {
error_setg(errp, "Failed SetupComm");
goto fail;
}
@@ -127,27 +110,27 @@ int win_chr_init(Chardev *chr, const char *filename, Error **errp)
comcfg.dcb.DCBlength = sizeof(DCB);
CommConfigDialog(filename, NULL, &comcfg);
- if (!SetCommState(s->hcom, &comcfg.dcb)) {
+ if (!SetCommState(s->file, &comcfg.dcb)) {
error_setg(errp, "Failed SetCommState");
goto fail;
}
- if (!SetCommMask(s->hcom, EV_ERR)) {
+ if (!SetCommMask(s->file, EV_ERR)) {
error_setg(errp, "Failed SetCommMask");
goto fail;
}
cto.ReadIntervalTimeout = MAXDWORD;
- if (!SetCommTimeouts(s->hcom, &cto)) {
+ if (!SetCommTimeouts(s->file, &cto)) {
error_setg(errp, "Failed SetCommTimeouts");
goto fail;
}
- if (!ClearCommError(s->hcom, &err, &comstat)) {
+ if (!ClearCommError(s->file, &err, &comstat)) {
error_setg(errp, "Failed ClearCommError");
goto fail;
}
- qemu_add_polling_cb(win_chr_poll, chr);
+ qemu_add_polling_cb(win_chr_serial_poll, chr);
return 0;
fail:
@@ -160,11 +143,9 @@ int win_chr_pipe_poll(void *opaque)
WinChardev *s = WIN_CHARDEV(opaque);
DWORD size;
- PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
+ PeekNamedPipe(s->file, NULL, 0, NULL, &size, NULL);
if (size > 0) {
- s->len = size;
- win_chr_read_poll(chr);
- win_chr_read(chr);
+ win_chr_read(chr, size);
return 1;
}
return 0;
@@ -181,14 +162,14 @@ static int win_chr_write(Chardev *chr, const uint8_t *buf, int len1)
s->osend.hEvent = s->hsend;
while (len > 0) {
if (s->hsend) {
- ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
+ ret = WriteFile(s->file, buf, len, &size, &s->osend);
} else {
- ret = WriteFile(s->hcom, buf, len, &size, NULL);
+ ret = WriteFile(s->file, buf, len, &size, NULL);
}
if (!ret) {
err = GetLastError();
if (err == ERROR_IO_PENDING) {
- ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
+ ret = GetOverlappedResult(s->file, &s->osend, &size, TRUE);
if (ret) {
buf += size;
len -= size;
@@ -211,34 +192,30 @@ static void char_win_finalize(Object *obj)
Chardev *chr = CHARDEV(obj);
WinChardev *s = WIN_CHARDEV(chr);
- if (s->skip_free) {
- return;
- }
-
if (s->hsend) {
CloseHandle(s->hsend);
}
if (s->hrecv) {
CloseHandle(s->hrecv);
}
- if (s->hcom) {
- CloseHandle(s->hcom);
+ if (!s->keep_open && s->file) {
+ CloseHandle(s->file);
}
if (s->fpipe) {
qemu_del_polling_cb(win_chr_pipe_poll, chr);
} else {
- qemu_del_polling_cb(win_chr_poll, chr);
+ qemu_del_polling_cb(win_chr_serial_poll, chr);
}
qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
}
-void qemu_chr_open_win_file(Chardev *chr, HANDLE fd_out)
+void win_chr_set_file(Chardev *chr, HANDLE file, bool keep_open)
{
WinChardev *s = WIN_CHARDEV(chr);
- s->skip_free = true;
- s->hcom = fd_out;
+ s->keep_open = keep_open;
+ s->file = file;
}
static void char_win_class_init(ObjectClass *oc, void *data)
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-30 09:34:47 +0000