1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376
|
/* 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., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, 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 <glib/gi18n.h>
#include <gio/gunixfdlist.h>
#include "gvfswritechannel.h"
#include "gvfsjobopenforwrite.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 void create_reply (GVfsJob *job,
GVfsDBusMount *object,
GDBusMethodInvocation *invocation);
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)
{
}
static gboolean
open_for_write_new_handle_common (GVfsDBusMount *object,
GDBusMethodInvocation *invocation,
GUnixFDList *fd_list,
const gchar *arg_path_data,
guint16 arg_mode,
const gchar *arg_etag,
gboolean arg_make_backup,
guint arg_flags,
guint arg_pid,
GVfsBackend *backend,
GVfsJobOpenForWriteVersion version)
{
GVfsJobOpenForWrite *job;
if (g_vfs_backend_invocation_first_handler (object, invocation, backend))
return TRUE;
job = g_object_new (G_VFS_TYPE_JOB_OPEN_FOR_WRITE,
"object", object,
"invocation", invocation,
NULL);
job->filename = g_strdup (arg_path_data);
job->mode = arg_mode;
if (*arg_etag != 0)
job->etag = g_strdup (arg_etag);
job->make_backup = arg_make_backup;
job->flags = arg_flags;
job->backend = backend;
job->pid = arg_pid;
job->version = version;
g_vfs_job_source_new_job (G_VFS_JOB_SOURCE (backend), G_VFS_JOB (job));
g_object_unref (job);
return TRUE;
}
gboolean
g_vfs_job_open_for_write_new_handle (GVfsDBusMount *object,
GDBusMethodInvocation *invocation,
GUnixFDList *fd_list,
const gchar *arg_path_data,
guint16 arg_mode,
const gchar *arg_etag,
gboolean arg_make_backup,
guint arg_flags,
guint arg_pid,
GVfsBackend *backend)
{
return open_for_write_new_handle_common(object,
invocation,
fd_list,
arg_path_data,
arg_mode,
arg_etag,
arg_make_backup,
arg_flags,
arg_pid,
backend,
OPEN_FOR_WRITE_VERSION_ORIGINAL);
}
gboolean
g_vfs_job_open_for_write_new_handle_with_flags (GVfsDBusMount *object,
GDBusMethodInvocation *invocation,
GUnixFDList *fd_list,
const gchar *arg_path_data,
guint16 arg_mode,
const gchar *arg_etag,
gboolean arg_make_backup,
guint arg_flags,
guint arg_pid,
GVfsBackend *backend)
{
return open_for_write_new_handle_common(object,
invocation,
fd_list,
arg_path_data,
arg_mode,
arg_etag,
arg_make_backup,
arg_flags,
arg_pid,
backend,
OPEN_FOR_WRITE_VERSION_WITH_FLAGS);
}
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_can_truncate (GVfsJobOpenForWrite *job,
gboolean can_truncate)
{
job->can_truncate = can_truncate;
}
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 thread */
static void
create_reply (GVfsJob *job,
GVfsDBusMount *object,
GDBusMethodInvocation *invocation)
{
GVfsJobOpenForWrite *open_job = G_VFS_JOB_OPEN_FOR_WRITE (job);
GVfsWriteChannel *channel;
GError *error;
int remote_fd;
int fd_id;
GUnixFDList *fd_list;
g_assert (open_job->backend_handle != NULL);
channel = g_vfs_write_channel_new (open_job->backend,
open_job->pid);
remote_fd = g_vfs_channel_steal_remote_fd (G_VFS_CHANNEL (channel));
if (remote_fd < 0)
{
/* expecting we're out of fds when remote_fd == -1 */
g_dbus_method_invocation_return_error_literal (invocation,
G_IO_ERROR,
G_IO_ERROR_TOO_MANY_OPEN_FILES,
_("Couldn't get stream file descriptor"));
g_object_unref (channel);
return;
}
fd_list = g_unix_fd_list_new ();
error = NULL;
fd_id = g_unix_fd_list_append (fd_list, remote_fd, &error);
if (fd_id == -1)
{
g_warning ("create_reply: %s (%s, %d)\n", error->message, g_quark_to_string (error->domain), error->code);
g_error_free (error);
}
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);
switch (open_job->version)
{
case OPEN_FOR_WRITE_VERSION_ORIGINAL:
gvfs_dbus_mount_complete_open_for_write (object, invocation,
fd_list, g_variant_new_handle (fd_id),
open_job->can_seek ? OPEN_FOR_WRITE_FLAG_CAN_SEEK : 0,
open_job->initial_offset);
break;
case OPEN_FOR_WRITE_VERSION_WITH_FLAGS:
gvfs_dbus_mount_complete_open_for_write_flags (object, invocation,
fd_list, g_variant_new_handle (fd_id),
(open_job->can_seek ? OPEN_FOR_WRITE_FLAG_CAN_SEEK : 0) |
(open_job->can_truncate ? OPEN_FOR_WRITE_FLAG_CAN_TRUNCATE : 0),
open_job->initial_offset);
break;
}
close (remote_fd);
g_object_unref (fd_list);
}
static void
finished (GVfsJob *job)
{
}
GPid
g_vfs_job_open_for_write_get_pid (GVfsJobOpenForWrite *job)
{
return job->pid;
}
|