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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 "qemu-common.h"
#include "chardev/char.h"
#ifdef _WIN32
#include "chardev/char-win.h"
#else
#include "chardev/char-fd.h"
#endif
static void qmp_chardev_open_file(Chardev *chr,
ChardevBackend *backend,
bool *be_opened,
Error **errp)
{
ChardevFile *file = backend->u.file.data;
#ifdef _WIN32
HANDLE out;
DWORD accessmode;
DWORD flags;
if (file->has_in) {
error_setg(errp, "input file not supported");
return;
}
if (file->has_append && file->append) {
/* Append to file if it already exists. */
accessmode = FILE_GENERIC_WRITE & ~FILE_WRITE_DATA;
flags = OPEN_ALWAYS;
} else {
/* Truncate file if it already exists. */
accessmode = GENERIC_WRITE;
flags = CREATE_ALWAYS;
}
out = CreateFile(file->out, accessmode, FILE_SHARE_READ, NULL, flags,
FILE_ATTRIBUTE_NORMAL, NULL);
if (out == INVALID_HANDLE_VALUE) {
error_setg(errp, "open %s failed", file->out);
return;
}
win_chr_set_file(chr, out, false);
#else
int flags, in = -1, out;
flags = O_WRONLY | O_CREAT | O_BINARY;
if (file->has_append && file->append) {
flags |= O_APPEND;
} else {
flags |= O_TRUNC;
}
out = qmp_chardev_open_file_source(file->out, flags, errp);
if (out < 0) {
return;
}
if (file->has_in) {
flags = O_RDONLY;
in = qmp_chardev_open_file_source(file->in, flags, errp);
if (in < 0) {
qemu_close(out);
return;
}
}
qemu_chr_open_fd(chr, in, out);
#endif
}
static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
Error **errp)
{
const char *path = qemu_opt_get(opts, "path");
ChardevFile *file;
backend->type = CHARDEV_BACKEND_KIND_FILE;
if (path == NULL) {
error_setg(errp, "chardev: file: no filename given");
return;
}
file = backend->u.file.data = g_new0(ChardevFile, 1);
qemu_chr_parse_common(opts, qapi_ChardevFile_base(file));
file->out = g_strdup(path);
file->has_append = true;
file->append = qemu_opt_get_bool(opts, "append", false);
}
static void char_file_class_init(ObjectClass *oc, void *data)
{
ChardevClass *cc = CHARDEV_CLASS(oc);
cc->parse = qemu_chr_parse_file_out;
cc->open = qmp_chardev_open_file;
}
static const TypeInfo char_file_type_info = {
.name = TYPE_CHARDEV_FILE,
#ifdef _WIN32
.parent = TYPE_CHARDEV_WIN,
#else
.parent = TYPE_CHARDEV_FD,
#endif
.class_init = char_file_class_init,
};
static void register_types(void)
{
type_register_static(&char_file_type_info);
}
type_init(register_types);
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