diff options
Diffstat (limited to 'trunk/daemon/gvfsjobopenforwrite.c')
| -rw-r--r-- | trunk/daemon/gvfsjobopenforwrite.c | 312 |
1 files changed, 312 insertions, 0 deletions
diff --git a/trunk/daemon/gvfsjobopenforwrite.c b/trunk/daemon/gvfsjobopenforwrite.c new file mode 100644 index 00000000..f456f839 --- /dev/null +++ b/trunk/daemon/gvfsjobopenforwrite.c @@ -0,0 +1,312 @@ +/* GIO - GLib Input, Output and Streaming Library + * + * Copyright (C) 2006-2007 Red Hat, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General + * Public License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place, Suite 330, + * Boston, MA 02111-1307, USA. + * + * Author: Alexander Larsson <alexl@redhat.com> + */ + +#include <config.h> + +#include <unistd.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <sys/un.h> + +#include <glib.h> +#include <dbus/dbus.h> +#include <glib/gi18n.h> +#include "gvfswritechannel.h" +#include "gvfsjobopenforwrite.h" +#include "gdbusutils.h" +#include "gvfsdaemonutils.h" + +G_DEFINE_TYPE (GVfsJobOpenForWrite, g_vfs_job_open_for_write, G_VFS_TYPE_JOB_DBUS) + +static void run (GVfsJob *job); +static gboolean try (GVfsJob *job); +static void finished (GVfsJob *job); +static DBusMessage *create_reply (GVfsJob *job, + DBusConnection *connection, + DBusMessage *message); + +static void +g_vfs_job_open_for_write_finalize (GObject *object) +{ + GVfsJobOpenForWrite *job; + + job = G_VFS_JOB_OPEN_FOR_WRITE (object); + + /* TODO: manage backend_handle if not put in write channel */ + + if (job->write_channel) + g_object_unref (job->write_channel); + + g_free (job->filename); + g_free (job->etag); + + if (G_OBJECT_CLASS (g_vfs_job_open_for_write_parent_class)->finalize) + (*G_OBJECT_CLASS (g_vfs_job_open_for_write_parent_class)->finalize) (object); +} + +static void +g_vfs_job_open_for_write_class_init (GVfsJobOpenForWriteClass *klass) +{ + GObjectClass *gobject_class = G_OBJECT_CLASS (klass); + GVfsJobClass *job_class = G_VFS_JOB_CLASS (klass); + GVfsJobDBusClass *job_dbus_class = G_VFS_JOB_DBUS_CLASS (klass); + + gobject_class->finalize = g_vfs_job_open_for_write_finalize; + job_class->run = run; + job_class->try = try; + job_class->finished = finished; + job_dbus_class->create_reply = create_reply; +} + +static void +g_vfs_job_open_for_write_init (GVfsJobOpenForWrite *job) +{ +} + +GVfsJob * +g_vfs_job_open_for_write_new (DBusConnection *connection, + DBusMessage *message, + GVfsBackend *backend) +{ + GVfsJobOpenForWrite *job; + DBusMessageIter iter; + DBusMessage *reply; + DBusError derror; + char *path; + guint16 mode; + dbus_bool_t make_backup; + const char *etag; + guint32 flags; + + path = NULL; + dbus_error_init (&derror); + dbus_message_iter_init (message, &iter); + if (!_g_dbus_message_iter_get_args (&iter, &derror, + G_DBUS_TYPE_CSTRING, &path, + DBUS_TYPE_UINT16, &mode, + DBUS_TYPE_STRING, &etag, + DBUS_TYPE_BOOLEAN, &make_backup, + DBUS_TYPE_UINT32, &flags, + 0)) + { + reply = dbus_message_new_error (message, + derror.name, + derror.message); + dbus_error_free (&derror); + + dbus_connection_send (connection, reply, NULL); + g_free (path); + return NULL; + } + + job = g_object_new (G_VFS_TYPE_JOB_OPEN_FOR_WRITE, + "message", message, + "connection", connection, + NULL); + + job->filename = path; + job->mode = mode; + if (*etag != 0) + job->etag = g_strdup (etag); + job->make_backup = make_backup; + job->flags = flags; + job->backend = backend; + + return G_VFS_JOB (job); +} + +static void +run (GVfsJob *job) +{ + GVfsJobOpenForWrite *op_job = G_VFS_JOB_OPEN_FOR_WRITE (job); + GVfsBackendClass *class = G_VFS_BACKEND_GET_CLASS (op_job->backend); + + if (op_job->mode == OPEN_FOR_WRITE_CREATE) + { + if (class->create == NULL) + { + g_vfs_job_failed (job, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, + _("Operation not supported by backend")); + return; + } + + class->create (op_job->backend, + op_job, + op_job->filename, + op_job->flags); + } + else if (op_job->mode == OPEN_FOR_WRITE_APPEND) + { + if (class->append_to == NULL) + { + g_vfs_job_failed (job, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, + _("Operation not supported by backend")); + return; + } + + class->append_to (op_job->backend, + op_job, + op_job->filename, + op_job->flags); + } + else if (op_job->mode == OPEN_FOR_WRITE_REPLACE) + { + if (class->replace == NULL) + { + g_vfs_job_failed (job, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, + _("Operation not supported by backend")); + return; + } + + class->replace (op_job->backend, + op_job, + op_job->filename, + op_job->etag, + op_job->make_backup, + op_job->flags); + } + else + g_assert_not_reached (); /* Handled in try */ +} + +static gboolean +try (GVfsJob *job) +{ + GVfsJobOpenForWrite *op_job = G_VFS_JOB_OPEN_FOR_WRITE (job); + GVfsBackendClass *class = G_VFS_BACKEND_GET_CLASS (op_job->backend); + + if (op_job->mode == OPEN_FOR_WRITE_CREATE) + { + if (class->try_create == NULL) + return FALSE; + return class->try_create (op_job->backend, + op_job, + op_job->filename, + op_job->flags); + } + else if (op_job->mode == OPEN_FOR_WRITE_APPEND) + { + if (class->try_append_to == NULL) + return FALSE; + return class->try_append_to (op_job->backend, + op_job, + op_job->filename, + op_job->flags); + } + else if (op_job->mode == OPEN_FOR_WRITE_REPLACE) + { + if (class->try_replace == NULL) + return FALSE; + return class->try_replace (op_job->backend, + op_job, + op_job->filename, + op_job->etag, + op_job->make_backup, + op_job->flags); + } + else + { + GError *error = NULL; + g_set_error_literal (&error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT, + "Wrong open for write type"); + g_vfs_job_failed_from_error (job, error); + g_error_free (error); + return TRUE; + } +} + +void +g_vfs_job_open_for_write_set_handle (GVfsJobOpenForWrite *job, + GVfsBackendHandle handle) +{ + job->backend_handle = handle; +} + +void +g_vfs_job_open_for_write_set_can_seek (GVfsJobOpenForWrite *job, + gboolean can_seek) +{ + job->can_seek = can_seek; +} + +void +g_vfs_job_open_for_write_set_initial_offset (GVfsJobOpenForWrite *job, + goffset initial_offset) +{ + job->initial_offset = initial_offset; +} + +/* Might be called on an i/o thwrite */ +static DBusMessage * +create_reply (GVfsJob *job, + DBusConnection *connection, + DBusMessage *message) +{ + GVfsJobOpenForWrite *open_job = G_VFS_JOB_OPEN_FOR_WRITE (job); + GVfsWriteChannel *channel; + DBusMessage *reply; + GError *error; + int remote_fd; + int fd_id; + dbus_bool_t can_seek; + guint64 initial_offset; + + g_assert (open_job->backend_handle != NULL); + + error = NULL; + channel = g_vfs_write_channel_new (open_job->backend); + + remote_fd = g_vfs_channel_steal_remote_fd (G_VFS_CHANNEL (channel)); + if (!dbus_connection_send_fd (connection, + remote_fd, + &fd_id, &error)) + { + close (remote_fd); + reply = _dbus_message_new_from_gerror (message, error); + g_error_free (error); + g_object_unref (channel); + return reply; + } + close (remote_fd); + + reply = dbus_message_new_method_return (message); + can_seek = open_job->can_seek; + initial_offset = open_job->initial_offset; + dbus_message_append_args (reply, + DBUS_TYPE_UINT32, &fd_id, + DBUS_TYPE_BOOLEAN, &can_seek, + DBUS_TYPE_UINT64, &initial_offset, + DBUS_TYPE_INVALID); + + g_vfs_channel_set_backend_handle (G_VFS_CHANNEL (channel), open_job->backend_handle); + open_job->backend_handle = NULL; + open_job->write_channel = channel; + + g_signal_emit_by_name (job, "new-source", open_job->write_channel); + + return reply; +} + +static void +finished (GVfsJob *job) +{ +} |