mirror of https://gitee.com/openkylin/gvfs.git
253 lines
7.1 KiB
C
253 lines
7.1 KiB
C
/* GIO - GLib Input, Output and Streaming Library
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*
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* Copyright (C) 2006-2007 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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* Author: Alexander Larsson <alexl@redhat.com>
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*/
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#include <config.h>
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#include <strings.h>
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#include <unistd.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <fcntl.h>
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#include <glib.h>
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#include <glib-object.h>
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#include <glib/gi18n.h>
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#include <gvfswritechannel.h>
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#include <gvfsdaemonprotocol.h>
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#include <gvfsdaemonutils.h>
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#include <gvfsjobwrite.h>
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#include <gvfsjobseekwrite.h>
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#include <gvfsjobtruncate.h>
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#include <gvfsjobclosewrite.h>
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#include <gvfsjobqueryinfowrite.h>
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struct _GVfsWriteChannel
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{
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GVfsChannel parent_instance;
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};
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G_DEFINE_TYPE (GVfsWriteChannel, g_vfs_write_channel, G_VFS_TYPE_CHANNEL)
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static GVfsJob *write_channel_close (GVfsChannel *channel);
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static GVfsJob *write_channel_handle_request (GVfsChannel *channel,
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guint32 command,
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guint32 seq_nr,
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guint32 arg1,
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guint32 arg2,
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gpointer data,
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gsize data_len,
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GError **error);
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static void
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g_vfs_write_channel_finalize (GObject *object)
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{
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if (G_OBJECT_CLASS (g_vfs_write_channel_parent_class)->finalize)
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(*G_OBJECT_CLASS (g_vfs_write_channel_parent_class)->finalize) (object);
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}
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static void
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g_vfs_write_channel_class_init (GVfsWriteChannelClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GVfsChannelClass *channel_class = G_VFS_CHANNEL_CLASS (klass);
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gobject_class->finalize = g_vfs_write_channel_finalize;
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channel_class->close = write_channel_close;
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channel_class->handle_request = write_channel_handle_request;
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}
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static void
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g_vfs_write_channel_init (GVfsWriteChannel *channel)
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{
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}
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static GVfsJob *
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write_channel_close (GVfsChannel *channel)
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{
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return g_vfs_job_close_write_new (G_VFS_WRITE_CHANNEL (channel),
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g_vfs_channel_get_backend_handle (channel),
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g_vfs_channel_get_backend (channel));
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}
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static GVfsJob *
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write_channel_handle_request (GVfsChannel *channel,
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guint32 command,
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guint32 seq_nr,
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guint32 arg1,
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guint32 arg2,
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gpointer data,
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gsize data_len,
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GError **error)
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{
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GVfsJob *job;
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GSeekType seek_type;
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GVfsBackendHandle backend_handle;
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GVfsBackend *backend;
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GVfsWriteChannel *write_channel;
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char *attrs;
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write_channel = G_VFS_WRITE_CHANNEL (channel);
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backend_handle = g_vfs_channel_get_backend_handle (channel);
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backend = g_vfs_channel_get_backend (channel);
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job = NULL;
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switch (command)
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{
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case G_VFS_DAEMON_SOCKET_PROTOCOL_REQUEST_WRITE:
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job = g_vfs_job_write_new (write_channel,
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backend_handle,
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data, data_len,
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backend);
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data = NULL; /* Pass ownership */
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break;
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case G_VFS_DAEMON_SOCKET_PROTOCOL_REQUEST_CLOSE:
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job = g_vfs_job_close_write_new (write_channel,
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backend_handle,
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backend);
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break;
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case G_VFS_DAEMON_SOCKET_PROTOCOL_REQUEST_SEEK_END:
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case G_VFS_DAEMON_SOCKET_PROTOCOL_REQUEST_SEEK_SET:
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seek_type = G_SEEK_SET;
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if (command == G_VFS_DAEMON_SOCKET_PROTOCOL_REQUEST_SEEK_END)
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seek_type = G_SEEK_END;
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job = g_vfs_job_seek_write_new (write_channel,
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backend_handle,
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seek_type,
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((goffset)arg1) | (((goffset)arg2) << 32),
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backend);
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break;
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case G_VFS_DAEMON_SOCKET_PROTOCOL_REQUEST_TRUNCATE:
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job = g_vfs_job_truncate_new (write_channel,
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backend_handle,
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((goffset)arg1) | (((goffset)arg2) << 32),
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backend);
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break;
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case G_VFS_DAEMON_SOCKET_PROTOCOL_REQUEST_QUERY_INFO:
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attrs = g_strndup (data, data_len);
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job = g_vfs_job_query_info_write_new (write_channel,
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backend_handle,
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attrs,
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backend);
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g_free (attrs);
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break;
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default:
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g_set_error (error, G_IO_ERROR,
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G_IO_ERROR_FAILED,
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"Unknown stream command %"G_GUINT32_FORMAT, command);
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break;
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}
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/* Ownership was passed */
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g_free (data);
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return job;
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}
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/* Might be called on an i/o thread
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*/
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void
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g_vfs_write_channel_send_seek_offset (GVfsWriteChannel *write_channel,
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goffset offset)
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{
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GVfsDaemonSocketProtocolReply reply;
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GVfsChannel *channel;
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channel = G_VFS_CHANNEL (write_channel);
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reply.type = g_htonl (G_VFS_DAEMON_SOCKET_PROTOCOL_REPLY_SEEK_POS);
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reply.seq_nr = g_htonl (g_vfs_channel_get_current_seq_nr (channel));
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reply.arg1 = g_htonl (offset & 0xffffffff);
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reply.arg2 = g_htonl (offset >> 32);
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g_vfs_channel_send_reply (channel, &reply, NULL, 0);
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}
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/* Might be called on an i/o thread
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*/
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void
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g_vfs_write_channel_send_truncated (GVfsWriteChannel *write_channel)
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{
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GVfsDaemonSocketProtocolReply reply;
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GVfsChannel *channel;
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channel = G_VFS_CHANNEL (write_channel);
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reply.type = g_htonl (G_VFS_DAEMON_SOCKET_PROTOCOL_REPLY_TRUNCATED);
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reply.seq_nr = g_htonl (g_vfs_channel_get_current_seq_nr (channel));
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reply.arg1 = g_htonl (0);
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reply.arg2 = g_htonl (0);
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g_vfs_channel_send_reply (channel, &reply, NULL, 0);
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}
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/* Might be called on an i/o thread
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*/
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void
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g_vfs_write_channel_send_closed (GVfsWriteChannel *write_channel,
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const char *etag)
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{
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GVfsDaemonSocketProtocolReply reply;
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GVfsChannel *channel;
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channel = G_VFS_CHANNEL (write_channel);
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reply.type = g_htonl (G_VFS_DAEMON_SOCKET_PROTOCOL_REPLY_CLOSED);
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reply.seq_nr = g_htonl (g_vfs_channel_get_current_seq_nr (channel));
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reply.arg1 = g_htonl (0);
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reply.arg2 = g_htonl (strlen (etag));
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g_vfs_channel_send_reply (channel, &reply, etag, strlen (etag));
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}
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/* Might be called on an i/o thread
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*/
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void
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g_vfs_write_channel_send_written (GVfsWriteChannel *write_channel,
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gsize bytes_written)
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{
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GVfsDaemonSocketProtocolReply reply;
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GVfsChannel *channel;
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channel = G_VFS_CHANNEL (write_channel);
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reply.type = g_htonl (G_VFS_DAEMON_SOCKET_PROTOCOL_REPLY_WRITTEN);
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reply.seq_nr = g_htonl (g_vfs_channel_get_current_seq_nr (channel));
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reply.arg1 = g_htonl (bytes_written);
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reply.arg2 = 0;
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g_vfs_channel_send_reply (channel, &reply, NULL, 0);
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}
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GVfsWriteChannel *
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g_vfs_write_channel_new (GVfsBackend *backend,
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GPid actual_consumer)
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{
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return g_object_new (G_VFS_TYPE_WRITE_CHANNEL,
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"backend", backend,
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"actual-consumer", actual_consumer,
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NULL);
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}
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