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/*
* QEMU System Emulator
*
* Copyright (c) 2003-2008 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "sysemu/char.h"
#ifdef _WIN32
#include "char-win.h"
#else
#include "char-fd.h"
#endif
#ifdef _WIN32
#define MAXCONNECT 1
#define NTIMEOUT 5000
static int win_chr_pipe_init(Chardev *chr, const char *filename,
Error **errp)
{
WinChardev *s = WIN_CHARDEV(chr);
OVERLAPPED ov;
int ret;
DWORD size;
char *openname;
s->fpipe = TRUE;
s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
if (!s->hsend) {
error_setg(errp, "Failed CreateEvent");
goto fail;
}
s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
if (!s->hrecv) {
error_setg(errp, "Failed CreateEvent");
goto fail;
}
openname = g_strdup_printf("\\\\.\\pipe\\%s", filename);
s->hcom = CreateNamedPipe(openname,
PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
PIPE_WAIT,
MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
g_free(openname);
if (s->hcom == INVALID_HANDLE_VALUE) {
error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
s->hcom = NULL;
goto fail;
}
ZeroMemory(&ov, sizeof(ov));
ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
ret = ConnectNamedPipe(s->hcom, &ov);
if (ret) {
error_setg(errp, "Failed ConnectNamedPipe");
goto fail;
}
ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
if (!ret) {
error_setg(errp, "Failed GetOverlappedResult");
if (ov.hEvent) {
CloseHandle(ov.hEvent);
ov.hEvent = NULL;
}
goto fail;
}
if (ov.hEvent) {
CloseHandle(ov.hEvent);
ov.hEvent = NULL;
}
qemu_add_polling_cb(win_chr_pipe_poll, chr);
return 0;
fail:
return -1;
}
static void qemu_chr_open_pipe(Chardev *chr,
ChardevBackend *backend,
bool *be_opened,
Error **errp)
{
ChardevHostdev *opts = backend->u.pipe.data;
const char *filename = opts->device;
if (win_chr_pipe_init(chr, filename, errp) < 0) {
return;
}
}
#else
static void qemu_chr_open_pipe(Chardev *chr,
ChardevBackend *backend,
bool *be_opened,
Error **errp)
{
ChardevHostdev *opts = backend->u.pipe.data;
int fd_in, fd_out;
char *filename_in;
char *filename_out;
const char *filename = opts->device;
filename_in = g_strdup_printf("%s.in", filename);
filename_out = g_strdup_printf("%s.out", filename);
TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
g_free(filename_in);
g_free(filename_out);
if (fd_in < 0 || fd_out < 0) {
if (fd_in >= 0) {
close(fd_in);
}
if (fd_out >= 0) {
close(fd_out);
}
TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
if (fd_in < 0) {
error_setg_file_open(errp, errno, filename);
return;
}
}
qemu_chr_open_fd(chr, fd_in, fd_out);
}
#endif /* !_WIN32 */
static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
Error **errp)
{
const char *device = qemu_opt_get(opts, "path");
ChardevHostdev *dev;
if (device == NULL) {
error_setg(errp, "chardev: pipe: no device path given");
return;
}
backend->type = CHARDEV_BACKEND_KIND_PIPE;
dev = backend->u.pipe.data = g_new0(ChardevHostdev, 1);
qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev));
dev->device = g_strdup(device);
}
static void char_pipe_class_init(ObjectClass *oc, void *data)
{
ChardevClass *cc = CHARDEV_CLASS(oc);
cc->parse = qemu_chr_parse_pipe;
cc->open = qemu_chr_open_pipe;
}
static const TypeInfo char_pipe_type_info = {
.name = TYPE_CHARDEV_PIPE,
#ifdef _WIN32
.parent = TYPE_CHARDEV_WIN,
#else
.parent = TYPE_CHARDEV_FD,
#endif
.class_init = char_pipe_class_init,
};
static void register_types(void)
{
type_register_static(&char_pipe_type_info);
}
type_init(register_types);
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