char: move ringbuf/memory to its own file

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

1 files changed, 0 insertions, 218 deletions

diff --git a/chardev/char.c b/chardev/char.c
index c8d03776b1..6b505c6f7d 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -3144,182 +3144,6 @@ static void qemu_chr_socket_connected(QIOTask *task, void *opaque)
 }
 
 
-/*********************************************************/
-/* Ring buffer chardev */
-
-typedef struct {
-    Chardev parent;
-    size_t size;
-    size_t prod;
-    size_t cons;
-    uint8_t *cbuf;
-} RingBufChardev;
-
-#define RINGBUF_CHARDEV(obj)                                    \
-    OBJECT_CHECK(RingBufChardev, (obj), TYPE_CHARDEV_RINGBUF)
-
-static size_t ringbuf_count(const Chardev *chr)
-{
-    const RingBufChardev *d = RINGBUF_CHARDEV(chr);
-
-    return d->prod - d->cons;
-}
-
-/* Called with chr_write_lock held.  */
-static int ringbuf_chr_write(Chardev *chr, const uint8_t *buf, int len)
-{
-    RingBufChardev *d = RINGBUF_CHARDEV(chr);
-    int i;
-
-    if (!buf || (len < 0)) {
-        return -1;
-    }
-
-    for (i = 0; i < len; i++ ) {
-        d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
-        if (d->prod - d->cons > d->size) {
-            d->cons = d->prod - d->size;
-        }
-    }
-
-    return len;
-}
-
-static int ringbuf_chr_read(Chardev *chr, uint8_t *buf, int len)
-{
-    RingBufChardev *d = RINGBUF_CHARDEV(chr);
-    int i;
-
-    qemu_mutex_lock(&chr->chr_write_lock);
-    for (i = 0; i < len && d->cons != d->prod; i++) {
-        buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
-    }
-    qemu_mutex_unlock(&chr->chr_write_lock);
-
-    return i;
-}
-
-static void char_ringbuf_finalize(Object *obj)
-{
-    RingBufChardev *d = RINGBUF_CHARDEV(obj);
-
-    g_free(d->cbuf);
-}
-
-static void qemu_chr_open_ringbuf(Chardev *chr,
-                                  ChardevBackend *backend,
-                                  bool *be_opened,
-                                  Error **errp)
-{
-    ChardevRingbuf *opts = backend->u.ringbuf.data;
-    RingBufChardev *d = RINGBUF_CHARDEV(chr);
-
-    d->size = opts->has_size ? opts->size : 65536;
-
-    /* The size must be power of 2 */
-    if (d->size & (d->size - 1)) {
-        error_setg(errp, "size of ringbuf chardev must be power of two");
-        return;
-    }
-
-    d->prod = 0;
-    d->cons = 0;
-    d->cbuf = g_malloc0(d->size);
-}
-
-void qmp_ringbuf_write(const char *device, const char *data,
-                       bool has_format, enum DataFormat format,
-                       Error **errp)
-{
-    Chardev *chr;
-    const uint8_t *write_data;
-    int ret;
-    gsize write_count;
-
-    chr = qemu_chr_find(device);
-    if (!chr) {
-        error_setg(errp, "Device '%s' not found", device);
-        return;
-    }
-
-    if (!CHARDEV_IS_RINGBUF(chr)) {
-        error_setg(errp,"%s is not a ringbuf device", device);
-        return;
-    }
-
-    if (has_format && (format == DATA_FORMAT_BASE64)) {
-        write_data = qbase64_decode(data, -1,
-                                    &write_count,
-                                    errp);
-        if (!write_data) {
-            return;
-        }
-    } else {
-        write_data = (uint8_t *)data;
-        write_count = strlen(data);
-    }
-
-    ret = ringbuf_chr_write(chr, write_data, write_count);
-
-    if (write_data != (uint8_t *)data) {
-        g_free((void *)write_data);
-    }
-
-    if (ret < 0) {
-        error_setg(errp, "Failed to write to device %s", device);
-        return;
-    }
-}
-
-char *qmp_ringbuf_read(const char *device, int64_t size,
-                       bool has_format, enum DataFormat format,
-                       Error **errp)
-{
-    Chardev *chr;
-    uint8_t *read_data;
-    size_t count;
-    char *data;
-
-    chr = qemu_chr_find(device);
-    if (!chr) {
-        error_setg(errp, "Device '%s' not found", device);
-        return NULL;
-    }
-
-    if (!CHARDEV_IS_RINGBUF(chr)) {
-        error_setg(errp,"%s is not a ringbuf device", device);
-        return NULL;
-    }
-
-    if (size <= 0) {
-        error_setg(errp, "size must be greater than zero");
-        return NULL;
-    }
-
-    count = ringbuf_count(chr);
-    size = size > count ? count : size;
-    read_data = g_malloc(size + 1);
-
-    ringbuf_chr_read(chr, read_data, size);
-
-    if (has_format && (format == DATA_FORMAT_BASE64)) {
-        data = g_base64_encode(read_data, size);
-        g_free(read_data);
-    } else {
-        /*
-         * FIXME should read only complete, valid UTF-8 characters up
-         * to @size bytes.  Invalid sequences should be replaced by a
-         * suitable replacement character.  Except when (and only
-         * when) ring buffer lost characters since last read, initial
-         * continuation characters should be dropped.
-         */
-        read_data[size] = 0;
-        data = (char *)read_data;
-    }
-
-    return data;
-}
-
 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
 {
     char host[65], port[33], width[8], height[8];
@@ -3600,46 +3424,6 @@ static const TypeInfo char_pipe_type_info = {
     .class_init = char_pipe_class_init,
 };
 
-static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
-                                   Error **errp)
-{
-    int val;
-    ChardevRingbuf *ringbuf;
-
-    backend->type = CHARDEV_BACKEND_KIND_RINGBUF;
-    ringbuf = backend->u.ringbuf.data = g_new0(ChardevRingbuf, 1);
-    qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(ringbuf));
-
-    val = qemu_opt_get_size(opts, "size", 0);
-    if (val != 0) {
-        ringbuf->has_size = true;
-        ringbuf->size = val;
-    }
-}
-
-static void char_ringbuf_class_init(ObjectClass *oc, void *data)
-{
-    ChardevClass *cc = CHARDEV_CLASS(oc);
-
-    cc->parse = qemu_chr_parse_ringbuf;
-    cc->open = qemu_chr_open_ringbuf;
-    cc->chr_write = ringbuf_chr_write;
-}
-
-static const TypeInfo char_ringbuf_type_info = {
-    .name = TYPE_CHARDEV_RINGBUF,
-    .parent = TYPE_CHARDEV,
-    .class_init = char_ringbuf_class_init,
-    .instance_size = sizeof(RingBufChardev),
-    .instance_finalize = char_ringbuf_finalize,
-};
-
-/* Bug-compatibility: */
-static const TypeInfo char_memory_type_info = {
-    .name = TYPE_CHARDEV_MEMORY,
-    .parent = TYPE_CHARDEV_RINGBUF,
-};
-
 static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
                                   Error **errp)
 {
@@ -4740,7 +4524,6 @@ static void register_types(void)
 #endif
     type_register_static(&char_socket_type_info);
     type_register_static(&char_udp_type_info);
-    type_register_static(&char_ringbuf_type_info);
     type_register_static(&char_file_type_info);
     type_register_static(&char_stdio_type_info);
 #ifdef HAVE_CHARDEV_SERIAL
@@ -4756,7 +4539,6 @@ static void register_types(void)
     type_register_static(&char_console_type_info);
 #endif
     type_register_static(&char_pipe_type_info);
-    type_register_static(&char_memory_type_info);
 
     /* this must be done after machine init, since we register FEs with muxes
      * as part of realize functions like serial_isa_realizefn when -nographic