qemu/chardev/char-pipe.c
Markus Armbruster 922a01a013 Move include qemu/option.h from qemu-common.h to actual users
qemu-common.h includes qemu/option.h, but most places that include the
former don't actually need the latter.  Drop the include, and add it
to the places that actually need it.

While there, drop superfluous includes of both headers, and
separate #include from file comment with a blank line.

This cleanup makes the number of objects depending on qemu/option.h
drop from 4545 (out of 4743) to 284 in my "build everything" tree.

Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20180201111846.21846-20-armbru@redhat.com>
[Semantic conflict with commit bdd6a90a9e in block/nvme.c resolved]
2018-02-09 13:52:16 +01:00

194 lines
5.5 KiB
C

/*
* 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 "qemu/option.h"
#include "chardev/char.h"
#ifdef _WIN32
#include "chardev/char-win.h"
#else
#include "chardev/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->file = 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->file == INVALID_HANDLE_VALUE) {
error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
s->file = NULL;
goto fail;
}
ZeroMemory(&ov, sizeof(ov));
ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
ret = ConnectNamedPipe(s->file, &ov);
if (ret) {
error_setg(errp, "Failed ConnectNamedPipe");
goto fail;
}
ret = GetOverlappedResult(s->file, &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);