static gssize
read_internal (GInputStream *stream,
void *buffer,
gsize count,
gboolean blocking,
GCancellable *cancellable,
GError **error)
{
SoupCacheInputStream *istream = SOUP_CACHE_INPUT_STREAM (stream);
SoupCacheInputStreamPrivate *priv = istream->priv;
GInputStream *base_stream;
gssize nread;
base_stream = g_filter_input_stream_get_base_stream (G_FILTER_INPUT_STREAM (stream));
nread = g_pollable_stream_read (base_stream, buffer, count, blocking,
cancellable, error);
if (G_UNLIKELY (nread == -1 || priv->read_finished))
return nread;
if (nread == 0) {
priv->read_finished = TRUE;
if (priv->current_writing_buffer == NULL && priv->output_stream)
notify_and_clear (istream, NULL);
} else {
SoupBuffer *soup_buffer = soup_buffer_new (SOUP_MEMORY_COPY, buffer, nread);
g_queue_push_tail (priv->buffer_queue, soup_buffer);
if (priv->current_writing_buffer == NULL && priv->output_stream)
soup_cache_input_stream_write_next_buffer (istream);
}
return nread;
}
static gboolean
sysroot_stdout_ready_cb (GPollableInputStream *pollable_stream,
StdoutClosure *closure)
{
glnx_unref_object RpmostreedSysroot *sysroot = NULL;
glnx_unref_object RpmostreedTransaction *transaction = NULL;
GMemoryInputStream *memory_stream;
GBufferedInputStream *buffered_stream;
char buffer[1024];
gconstpointer stream_buffer;
gsize stream_buffer_size;
gsize total_bytes_read = 0;
gboolean have_line = FALSE;
GError *local_error = NULL;
sysroot = g_weak_ref_get (&closure->sysroot);
if (sysroot != NULL)
transaction = rpmostreed_transaction_monitor_ref_active_transaction (sysroot->transaction_monitor);
/* XXX Would very much like g_buffered_input_stream_fill_nonblocking().
* Much of this function is a clumsy and inefficient attempt to
* achieve the same thing.
*
* See: https://bugzilla.gnome.org/726797
*/
buffered_stream = G_BUFFERED_INPUT_STREAM (closure->data_stream);
memory_stream = (GMemoryInputStream *) g_filter_input_stream_get_base_stream (G_FILTER_INPUT_STREAM (buffered_stream));
while (local_error == NULL)
{
gssize n_read;
n_read = g_pollable_input_stream_read_nonblocking (pollable_stream,
buffer,
sizeof (buffer),
NULL, &local_error);
if (n_read > 0)
{
/* XXX Gotta use GBytes so the data gets copied. */
g_autoptr(GBytes) bytes = g_bytes_new (buffer, n_read);
g_memory_input_stream_add_bytes (memory_stream, bytes);
total_bytes_read += n_read;
}
}
if (!g_error_matches (local_error, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK))
goto out;
g_clear_error (&local_error);
read_another_line:
/* Fill the buffered stream with the data we just put in the
* memory stream, then peek at the buffer to see if it's safe
* to call g_data_input_stream_read_line() without blocking.
*
* XXX Oye, there's gotta be an easier way to do this...
*/
/* This should never fail since it's just reading from memory. */
g_buffered_input_stream_fill (buffered_stream, total_bytes_read, NULL, NULL);
stream_buffer = g_buffered_input_stream_peek_buffer (buffered_stream, &stream_buffer_size);
have_line = (memchr (stream_buffer, '\n', stream_buffer_size) != NULL);
if (have_line)
{
g_autofree char *line = NULL;
gsize length;
line = g_data_input_stream_read_line (closure->data_stream,
&length, NULL, &local_error);
if (local_error != NULL)
goto out;
/* If there's an active transaction, forward the line to the
* transaction's owner through the "Message" signal. Otherwise
* dump it to the non-redirected standard output stream. */
if (transaction != NULL)
{
rpmostree_transaction_emit_message (RPMOSTREE_TRANSACTION (transaction), line);
}
else
{
/* This is essentially puts(), don't care about errors. */
g_output_stream_write_all (closure->real_stdout,
line, length, NULL, NULL, NULL);
g_output_stream_write_all (closure->real_stdout,
"\n", 1, NULL, NULL, NULL);
}
goto read_another_line;
}
out:
if (local_error != NULL)
{
g_warning ("Failed to read stdout pipe: %s", local_error->message);
g_clear_error (&local_error);
}
return G_SOURCE_CONTINUE;
}
