char: move file chardev in its own file

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Eric Blake <eblake@redhat.com>

1 files changed, 139 insertions, 0 deletions

diff --git a/chardev/char-file.c b/chardev/char-file.c
new file mode 100644
index 0000000000..8bae25350d
--- /dev/null
+++ b/chardev/char-file.c
@@ -0,0 +1,139 @@
+/*
+ * 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 "sysemu/char.h"
+
+#ifdef _WIN32
+#include "char-win.h"
+#else
+#include "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;
+    }
+
+    qemu_chr_open_win_file(chr, out);
+#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);