1 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2
3 /* GIO - GLib Input, Output and Streaming Library
4 *
5 * Copyright (C) 2006-2007 Red Hat, Inc.
6 *
7 * SPDX-License-Identifier: LGPL-2.1-or-later
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General
20 * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
21 *
22 * Author: Alexander Larsson <alexl@redhat.com>
23 * David Zeuthen <davidz@redhat.com>
24 */
25
26 #include "config.h"
27
28 #include <string.h>
29 #include <sys/wait.h>
30 #include <unistd.h>
31
32 #include <glib.h>
33 #include "gunixvolume.h"
34 #include "gunixmount.h"
35 #include "gunixmounts.h"
36 #include "gthemedicon.h"
37 #include "gvolume.h"
38 #include "gvolumemonitor.h"
39 #include "gtask.h"
40 #include "gioerror.h"
41 #include "glibintl.h"
42 /* for BUFSIZ */
43 #include <stdio.h>
44
45
46 struct _GUnixVolume {
47 GObject parent;
48
49 GVolumeMonitor *volume_monitor;
50 GUnixMount *mount; /* owned by volume monitor */
51
52 char *device_path;
53 char *mount_path;
54 gboolean can_eject;
55
56 char *identifier;
57 char *identifier_type;
58
59 char *name;
60 GIcon *icon;
61 GIcon *symbolic_icon;
62 };
63
64 static void g_unix_volume_volume_iface_init (GVolumeIface *iface);
65
66 #define g_unix_volume_get_type _g_unix_volume_get_type
67 G_DEFINE_TYPE_WITH_CODE (GUnixVolume, g_unix_volume, G_TYPE_OBJECT,
68 G_IMPLEMENT_INTERFACE (G_TYPE_VOLUME,
69 g_unix_volume_volume_iface_init))
70
71 static void
72 g_unix_volume_finalize (GObject *object)
73 {
74 GUnixVolume *volume;
75
76 volume = G_UNIX_VOLUME (object);
77
78 if (volume->volume_monitor != NULL)
79 g_object_unref (volume->volume_monitor);
80
81 if (volume->mount)
82 _g_unix_mount_unset_volume (volume->mount, volume);
83
84 g_object_unref (volume->icon);
85 g_object_unref (volume->symbolic_icon);
86 g_free (volume->name);
87 g_free (volume->mount_path);
88 g_free (volume->device_path);
89 g_free (volume->identifier);
90 g_free (volume->identifier_type);
91
92 G_OBJECT_CLASS (g_unix_volume_parent_class)->finalize (object);
93 }
94
95 static void
96 g_unix_volume_class_init (GUnixVolumeClass *klass)
97 {
98 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
99
100 gobject_class->finalize = g_unix_volume_finalize;
101 }
102
103 static void
104 g_unix_volume_init (GUnixVolume *unix_volume)
105 {
106 }
107
108 GUnixVolume *
109 _g_unix_volume_new (GVolumeMonitor *volume_monitor,
110 GUnixMountPoint *mountpoint)
111 {
112 GUnixVolume *volume;
113
114 if (!(g_unix_mount_point_is_user_mountable (mountpoint) ||
115 g_str_has_prefix (g_unix_mount_point_get_device_path (mountpoint), "/vol/")) ||
116 g_unix_mount_point_is_loopback (mountpoint))
117 return NULL;
118
119 volume = g_object_new (G_TYPE_UNIX_VOLUME, NULL);
120 volume->volume_monitor = volume_monitor != NULL ? g_object_ref (volume_monitor) : NULL;
121 volume->mount_path = g_strdup (g_unix_mount_point_get_mount_path (mountpoint));
122 volume->device_path = g_strdup (g_unix_mount_point_get_device_path (mountpoint));
123 volume->can_eject = g_unix_mount_point_guess_can_eject (mountpoint);
124
125 volume->name = g_unix_mount_point_guess_name (mountpoint);
126 volume->icon = g_unix_mount_point_guess_icon (mountpoint);
127 volume->symbolic_icon = g_unix_mount_point_guess_symbolic_icon (mountpoint);
128
129
130 if (strcmp (g_unix_mount_point_get_fs_type (mountpoint), "nfs") == 0)
131 {
132 volume->identifier_type = g_strdup (G_VOLUME_IDENTIFIER_KIND_NFS_MOUNT);
133 volume->identifier = g_strdup (volume->device_path);
134 }
135 else if (g_str_has_prefix (volume->device_path, "LABEL="))
136 {
137 volume->identifier_type = g_strdup (G_VOLUME_IDENTIFIER_KIND_LABEL);
138 volume->identifier = g_strdup (volume->device_path + 6);
139 }
140 else if (g_str_has_prefix (volume->device_path, "UUID="))
141 {
142 volume->identifier_type = g_strdup (G_VOLUME_IDENTIFIER_KIND_UUID);
143 volume->identifier = g_strdup (volume->device_path + 5);
144 }
145 else if (g_path_is_absolute (volume->device_path))
146 {
147 volume->identifier_type = g_strdup (G_VOLUME_IDENTIFIER_KIND_UNIX_DEVICE);
148 volume->identifier = g_strdup (volume->device_path);
149 }
150
151 return volume;
152 }
153
154 void
155 _g_unix_volume_disconnected (GUnixVolume *volume)
156 {
157 if (volume->mount)
158 {
159 _g_unix_mount_unset_volume (volume->mount, volume);
160 volume->mount = NULL;
161 }
162 }
163
164 void
165 _g_unix_volume_set_mount (GUnixVolume *volume,
166 GUnixMount *mount)
167 {
168 if (volume->mount == mount)
169 return;
170
171 if (volume->mount)
172 _g_unix_mount_unset_volume (volume->mount, volume);
173
174 volume->mount = mount;
175
176 /* TODO: Emit changed in idle to avoid locking issues */
177 g_signal_emit_by_name (volume, "changed");
178 if (volume->volume_monitor != NULL)
179 g_signal_emit_by_name (volume->volume_monitor, "volume-changed", volume);
180 }
181
182 void
183 _g_unix_volume_unset_mount (GUnixVolume *volume,
184 GUnixMount *mount)
185 {
186 if (volume->mount == mount)
187 {
188 volume->mount = NULL;
189 /* TODO: Emit changed in idle to avoid locking issues */
190 g_signal_emit_by_name (volume, "changed");
191 if (volume->volume_monitor != NULL)
192 g_signal_emit_by_name (volume->volume_monitor, "volume-changed", volume);
193 }
194 }
195
196 static GIcon *
197 g_unix_volume_get_icon (GVolume *volume)
198 {
199 GUnixVolume *unix_volume = G_UNIX_VOLUME (volume);
200 return g_object_ref (unix_volume->icon);
201 }
202
203 static GIcon *
204 g_unix_volume_get_symbolic_icon (GVolume *volume)
205 {
206 GUnixVolume *unix_volume = G_UNIX_VOLUME (volume);
207 return g_object_ref (unix_volume->symbolic_icon);
208 }
209
210 static char *
211 g_unix_volume_get_name (GVolume *volume)
212 {
213 GUnixVolume *unix_volume = G_UNIX_VOLUME (volume);
214 return g_strdup (unix_volume->name);
215 }
216
217 static char *
218 g_unix_volume_get_uuid (GVolume *volume)
219 {
220 return NULL;
221 }
222
223 static gboolean
224 g_unix_volume_can_mount (GVolume *volume)
225 {
226 return TRUE;
227 }
228
229 static gboolean
230 g_unix_volume_can_eject (GVolume *volume)
231 {
232 GUnixVolume *unix_volume = G_UNIX_VOLUME (volume);
233 return unix_volume->can_eject;
234 }
235
236 static gboolean
237 g_unix_volume_should_automount (GVolume *volume)
238 {
239 /* We automount all local volumes because we don't even
240 * make the internal stuff visible
241 */
242 return TRUE;
243 }
244
245 static GDrive *
246 g_unix_volume_get_drive (GVolume *volume)
247 {
248 return NULL;
249 }
250
251 static GMount *
252 g_unix_volume_get_mount (GVolume *volume)
253 {
254 GUnixVolume *unix_volume = G_UNIX_VOLUME (volume);
255
256 if (unix_volume->mount != NULL)
257 return g_object_ref (G_MOUNT (unix_volume->mount));
258
259 return NULL;
260 }
261
262
263 gboolean
264 _g_unix_volume_has_mount_path (GUnixVolume *volume,
265 const char *mount_path)
266 {
267 return strcmp (volume->mount_path, mount_path) == 0;
268 }
269
270 static void
271 eject_mount_done (GObject *source,
272 GAsyncResult *result,
273 gpointer user_data)
274 {
275 GSubprocess *subprocess = G_SUBPROCESS (source);
276 GTask *task = user_data;
277 GError *error = NULL;
278 gchar *stderr_str;
279 GUnixVolume *unix_volume;
280
281 if (!g_subprocess_communicate_utf8_finish (subprocess, result, NULL, &stderr_str, &error))
282 {
283 g_task_return_error (task, error);
284 g_error_free (error);
285 }
286 else /* successful communication */
287 {
288 if (!g_subprocess_get_successful (subprocess))
289 /* ...but bad exit code */
290 g_task_return_new_error_literal (task, G_IO_ERROR, G_IO_ERROR_FAILED, stderr_str);
291 else
292 {
293 /* ...and successful exit code */
294 unix_volume = G_UNIX_VOLUME (g_task_get_source_object (task));
295 _g_unix_volume_monitor_update (G_UNIX_VOLUME_MONITOR (unix_volume->volume_monitor));
296 g_task_return_boolean (task, TRUE);
297 }
298
299 g_free (stderr_str);
300 }
301
302 g_object_unref (task);
303 }
304
305 static void
306 eject_mount_do (GVolume *volume,
307 GCancellable *cancellable,
308 GAsyncReadyCallback callback,
309 gpointer user_data,
310 const gchar * const *argv,
311 const gchar *task_name)
312 {
313 GSubprocess *subprocess;
314 GError *error = NULL;
315 GTask *task;
316
317 task = g_task_new (volume, cancellable, callback, user_data);
318 g_task_set_source_tag (task, eject_mount_do);
319 g_task_set_name (task, task_name);
320
321 if (g_task_return_error_if_cancelled (task))
322 {
323 g_object_unref (task);
324 return;
325 }
326
327 subprocess = g_subprocess_newv (argv, G_SUBPROCESS_FLAGS_STDOUT_SILENCE | G_SUBPROCESS_FLAGS_STDERR_PIPE, &error);
328 g_assert_no_error (error);
329
330 g_subprocess_communicate_utf8_async (subprocess, NULL,
331 g_task_get_cancellable (task),
332 eject_mount_done, task);
333 }
334
335 static void
336 g_unix_volume_mount (GVolume *volume,
337 GMountMountFlags flags,
338 GMountOperation *mount_operation,
339 GCancellable *cancellable,
340 GAsyncReadyCallback callback,
341 gpointer user_data)
342 {
343 GUnixVolume *unix_volume = G_UNIX_VOLUME (volume);
344 const gchar *argv[] = { "mount", NULL, NULL };
345
346 if (unix_volume->mount_path != NULL)
347 argv[1] = unix_volume->mount_path;
348 else
349 argv[1] = unix_volume->device_path;
350
351 eject_mount_do (volume, cancellable, callback, user_data, argv, "[gio] mount volume");
352 }
353
354 static gboolean
355 g_unix_volume_mount_finish (GVolume *volume,
356 GAsyncResult *result,
357 GError **error)
358 {
359 g_return_val_if_fail (g_task_is_valid (result, volume), FALSE);
360
361 return g_task_propagate_boolean (G_TASK (result), error);
362 }
363
364 static void
365 g_unix_volume_eject (GVolume *volume,
366 GMountUnmountFlags flags,
367 GCancellable *cancellable,
368 GAsyncReadyCallback callback,
369 gpointer user_data)
370 {
371 GUnixVolume *unix_volume = G_UNIX_VOLUME (volume);
372 const gchar *argv[] = { "eject", NULL, NULL };
373
374 argv[1] = unix_volume->device_path;
375
376 eject_mount_do (volume, cancellable, callback, user_data, argv, "[gio] eject volume");
377 }
378
379 static gboolean
380 g_unix_volume_eject_finish (GVolume *volume,
381 GAsyncResult *result,
382 GError **error)
383 {
384 g_return_val_if_fail (g_task_is_valid (result, volume), FALSE);
385
386 return g_task_propagate_boolean (G_TASK (result), error);
387 }
388
389 static gchar *
390 g_unix_volume_get_identifier (GVolume *volume,
391 const gchar *kind)
392 {
393 GUnixVolume *unix_volume = G_UNIX_VOLUME (volume);
394
395 if (unix_volume->identifier_type != NULL &&
396 strcmp (kind, unix_volume->identifier_type) == 0)
397 return g_strdup (unix_volume->identifier);
398
399 return NULL;
400 }
401
402 static gchar **
403 g_unix_volume_enumerate_identifiers (GVolume *volume)
404 {
405 GUnixVolume *unix_volume = G_UNIX_VOLUME (volume);
406 gchar **res;
407
408 if (unix_volume->identifier_type)
409 {
410 res = g_new (gchar *, 2);
411 res[0] = g_strdup (unix_volume->identifier_type);
412 res[1] = NULL;
413 }
414 else
415 {
416 res = g_new (gchar *, 1);
417 res[0] = NULL;
418 }
419
420 return res;
421 }
422
423 static void
424 g_unix_volume_volume_iface_init (GVolumeIface *iface)
425 {
426 iface->get_name = g_unix_volume_get_name;
427 iface->get_icon = g_unix_volume_get_icon;
428 iface->get_symbolic_icon = g_unix_volume_get_symbolic_icon;
429 iface->get_uuid = g_unix_volume_get_uuid;
430 iface->get_drive = g_unix_volume_get_drive;
431 iface->get_mount = g_unix_volume_get_mount;
432 iface->can_mount = g_unix_volume_can_mount;
433 iface->can_eject = g_unix_volume_can_eject;
434 iface->should_automount = g_unix_volume_should_automount;
435 iface->mount_fn = g_unix_volume_mount;
436 iface->mount_finish = g_unix_volume_mount_finish;
437 iface->eject = g_unix_volume_eject;
438 iface->eject_finish = g_unix_volume_eject_finish;
439 iface->get_identifier = g_unix_volume_get_identifier;
440 iface->enumerate_identifiers = g_unix_volume_enumerate_identifiers;
441 }