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![Nikita Ivanov](/assets/img/avatar_default.png)
Rename macro name to more transparent one and refactor it to expression. Signed-off-by: Nikita Ivanov <nivanov@cloudlinux.com> Message-Id: <20221023090422.242617-2-nivanov@cloudlinux.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Christian Schoenebeck <qemu_oss@crudebyte.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
198 lines
5.6 KiB
C
198 lines
5.6 KiB
C
/*
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* QEMU System Emulator
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "qemu/main-loop.h"
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#include "qemu/module.h"
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#include "qemu/option.h"
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#include "chardev/char.h"
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#ifdef _WIN32
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#include "chardev/char-win.h"
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#else
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#include "chardev/char-fd.h"
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#endif
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#ifdef _WIN32
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#define MAXCONNECT 1
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#define NTIMEOUT 5000
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static int win_chr_pipe_init(Chardev *chr, const char *filename,
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Error **errp)
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{
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WinChardev *s = WIN_CHARDEV(chr);
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OVERLAPPED ov;
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int ret;
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DWORD size;
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char *openname;
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s->fpipe = TRUE;
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s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
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if (!s->hsend) {
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error_setg(errp, "Failed CreateEvent");
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goto fail;
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}
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s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
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if (!s->hrecv) {
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error_setg(errp, "Failed CreateEvent");
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goto fail;
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}
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openname = g_strdup_printf("\\\\.\\pipe\\%s", filename);
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s->file = CreateNamedPipe(openname,
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PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
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PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
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PIPE_WAIT,
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MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
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g_free(openname);
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if (s->file == INVALID_HANDLE_VALUE) {
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error_setg_win32(errp, GetLastError(), "Failed CreateNamedPipe");
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s->file = NULL;
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goto fail;
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}
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ZeroMemory(&ov, sizeof(ov));
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ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
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ret = ConnectNamedPipe(s->file, &ov);
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if (ret) {
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error_setg(errp, "Failed ConnectNamedPipe");
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goto fail;
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}
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ret = GetOverlappedResult(s->file, &ov, &size, TRUE);
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if (!ret) {
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error_setg(errp, "Failed GetOverlappedResult");
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if (ov.hEvent) {
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CloseHandle(ov.hEvent);
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ov.hEvent = NULL;
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}
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goto fail;
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}
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if (ov.hEvent) {
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CloseHandle(ov.hEvent);
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ov.hEvent = NULL;
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}
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qemu_add_polling_cb(win_chr_pipe_poll, chr);
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return 0;
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fail:
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return -1;
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}
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static void qemu_chr_open_pipe(Chardev *chr,
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ChardevBackend *backend,
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bool *be_opened,
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Error **errp)
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{
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ChardevHostdev *opts = backend->u.pipe.data;
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const char *filename = opts->device;
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if (win_chr_pipe_init(chr, filename, errp) < 0) {
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return;
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}
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}
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#else
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static void qemu_chr_open_pipe(Chardev *chr,
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ChardevBackend *backend,
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bool *be_opened,
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Error **errp)
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{
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ChardevHostdev *opts = backend->u.pipe.data;
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int fd_in, fd_out;
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char *filename_in;
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char *filename_out;
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const char *filename = opts->device;
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filename_in = g_strdup_printf("%s.in", filename);
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filename_out = g_strdup_printf("%s.out", filename);
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fd_in = RETRY_ON_EINTR(qemu_open_old(filename_in, O_RDWR | O_BINARY));
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fd_out = RETRY_ON_EINTR(qemu_open_old(filename_out, O_RDWR | O_BINARY));
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g_free(filename_in);
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g_free(filename_out);
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if (fd_in < 0 || fd_out < 0) {
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if (fd_in >= 0) {
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close(fd_in);
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}
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if (fd_out >= 0) {
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close(fd_out);
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}
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fd_in = fd_out = RETRY_ON_EINTR(
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qemu_open_old(filename, O_RDWR | O_BINARY)
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);
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if (fd_in < 0) {
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error_setg_file_open(errp, errno, filename);
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return;
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}
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}
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qemu_chr_open_fd(chr, fd_in, fd_out);
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}
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#endif /* !_WIN32 */
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static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
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Error **errp)
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{
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const char *device = qemu_opt_get(opts, "path");
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ChardevHostdev *dev;
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if (device == NULL) {
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error_setg(errp, "chardev: pipe: no device path given");
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return;
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}
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backend->type = CHARDEV_BACKEND_KIND_PIPE;
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dev = backend->u.pipe.data = g_new0(ChardevHostdev, 1);
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qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev));
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dev->device = g_strdup(device);
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}
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static void char_pipe_class_init(ObjectClass *oc, void *data)
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{
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ChardevClass *cc = CHARDEV_CLASS(oc);
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cc->parse = qemu_chr_parse_pipe;
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cc->open = qemu_chr_open_pipe;
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}
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static const TypeInfo char_pipe_type_info = {
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.name = TYPE_CHARDEV_PIPE,
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#ifdef _WIN32
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.parent = TYPE_CHARDEV_WIN,
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#else
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.parent = TYPE_CHARDEV_FD,
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#endif
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.class_init = char_pipe_class_init,
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};
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static void register_types(void)
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{
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type_register_static(&char_pipe_type_info);
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}
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type_init(register_types);
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