123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149 |
- /*
- * 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/module.h"
- #include "qemu/option.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->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->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");
- const char *inpath = qemu_opt_get(opts, "input-path");
- ChardevFile *file;
- backend->type = CHARDEV_BACKEND_KIND_FILE;
- if (path == NULL) {
- error_setg(errp, "chardev: file: no filename given");
- return;
- }
- #ifdef _WIN32
- if (inpath) {
- error_setg(errp, "chardev: file: input-path not supported on Windows");
- return;
- }
- #endif
- file = backend->u.file.data = g_new0(ChardevFile, 1);
- qemu_chr_parse_common(opts, qapi_ChardevFile_base(file));
- file->out = g_strdup(path);
- file->in = g_strdup(inpath);
- 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);
|