The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Copyright (C) 2008 The Android Open Source Project |
| 4 | * |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | * you may not use this file except in compliance with the License. |
| 7 | * You may obtain a copy of the License at |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | * See the License for the specific language governing permissions and |
| 15 | * limitations under the License. |
| 16 | */ |
| 17 | |
| 18 | #include <stdlib.h> |
| 19 | #include <string.h> |
| 20 | #include <errno.h> |
| 21 | #include <dirent.h> |
| 22 | #include <unistd.h> |
| 23 | #include <sched.h> |
| 24 | |
| 25 | #include <sys/mount.h> |
| 26 | |
| 27 | #include <cutils/config_utils.h> |
| 28 | #include <cutils/properties.h> |
| 29 | |
| 30 | #include "vold.h" |
| 31 | #include "volmgr.h" |
| 32 | #include "blkdev.h" |
| 33 | #include "ums.h" |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 34 | #include "format.h" |
| 35 | #include "devmapper.h" |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 36 | |
| 37 | #include "volmgr_ext3.h" |
| 38 | #include "volmgr_vfat.h" |
| 39 | |
| 40 | #define DEBUG_VOLMGR 0 |
| 41 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 42 | static volume_t *vol_root = NULL; |
| 43 | static boolean safe_mode = true; |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 44 | |
| 45 | static struct volmgr_fstable_entry fs_table[] = { |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 46 | { "ext3", ext_identify, ext_check, ext_mount , true }, |
| 47 | { "vfat", vfat_identify, vfat_check, vfat_mount , false }, |
| 48 | { NULL, NULL, NULL, NULL , false} |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 49 | }; |
| 50 | |
| 51 | struct _volume_state_event_map { |
| 52 | volume_state_t state; |
| 53 | char *event; |
| 54 | char *property_val; |
| 55 | }; |
| 56 | |
| 57 | static struct _volume_state_event_map volume_state_strings[] = { |
| 58 | { volstate_unknown, "volstate_unknown:", "unknown" }, |
| 59 | { volstate_nomedia, VOLD_EVT_NOMEDIA, VOLD_ES_PVAL_NOMEDIA }, |
| 60 | { volstate_unmounted, VOLD_EVT_UNMOUNTED, VOLD_ES_PVAL_UNMOUNTED }, |
| 61 | { volstate_checking, VOLD_EVT_CHECKING, VOLD_ES_PVAL_CHECKING }, |
| 62 | { volstate_mounted, VOLD_EVT_MOUNTED, VOLD_ES_PVAL_MOUNTED }, |
| 63 | { volstate_mounted_ro, VOLD_EVT_MOUNTED_RO, VOLD_ES_PVAL_MOUNTED_RO }, |
| 64 | { volstate_badremoval, VOLD_EVT_BADREMOVAL, VOLD_ES_PVAL_BADREMOVAL }, |
| 65 | { volstate_damaged, VOLD_EVT_DAMAGED, VOLD_ES_PVAL_DAMAGED }, |
| 66 | { volstate_nofs, VOLD_EVT_NOFS, VOLD_ES_PVAL_NOFS }, |
| 67 | { volstate_ums, VOLD_EVT_UMS, VOLD_ES_PVAL_UMS }, |
| 68 | { 0, NULL, NULL } |
| 69 | }; |
| 70 | |
| 71 | |
| 72 | static int volmgr_readconfig(char *cfg_path); |
| 73 | static int volmgr_config_volume(cnode *node); |
| 74 | static volume_t *volmgr_lookup_volume_by_mediapath(char *media_path, boolean fuzzy); |
| 75 | static volume_t *volmgr_lookup_volume_by_dev(blkdev_t *dev); |
| 76 | static int _volmgr_start(volume_t *vol, blkdev_t *dev); |
| 77 | static int volmgr_start_fs(struct volmgr_fstable_entry *fs, volume_t *vol, blkdev_t *dev); |
| 78 | static void *volmgr_start_fs_thread(void *arg); |
| 79 | static void volmgr_start_fs_thread_sighandler(int signo); |
| 80 | static void volume_setstate(volume_t *vol, volume_state_t state); |
| 81 | static char *conv_volstate_to_eventstr(volume_state_t state); |
| 82 | static char *conv_volstate_to_propstr(volume_state_t state); |
| 83 | static int volume_send_state(volume_t *vol); |
The Android Open Source Project | dcf3ce2 | 2009-01-22 00:13:45 -0800 | [diff] [blame] | 84 | static void _cb_volstopped_for_ums_enable(volume_t *v, void *arg); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 85 | static int _volmgr_enable_ums(volume_t *); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 86 | static int volmgr_shutdown_volume(volume_t *v, void (* cb) (volume_t *, void *arg), boolean emit_statechange); |
| 87 | static int volmgr_stop_volume(volume_t *v, void (*cb) (volume_t *, void *), void *arg, boolean emit_statechange); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 88 | static void _cb_volume_stopped_for_eject(volume_t *v, void *arg); |
| 89 | static void _cb_volume_stopped_for_shutdown(volume_t *v, void *arg); |
| 90 | static int _volmgr_consider_disk_and_vol(volume_t *vol, blkdev_t *dev); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 91 | static void volmgr_uncage_reaper(volume_t *vol, void (* cb) (volume_t *, void *arg), void *arg); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 92 | static void volmgr_reaper_thread_sighandler(int signo); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 93 | static void volmgr_add_mediapath_to_volume(volume_t *v, char *media_path); |
| 94 | static int volmgr_send_eject_request(volume_t *v); |
| 95 | static volume_t *volmgr_lookup_volume_by_mountpoint(char *mount_point, boolean leave_locked); |
| 96 | |
| 97 | static boolean _mountpoint_mounted(char *mp) |
| 98 | { |
| 99 | char device[256]; |
| 100 | char mount_path[256]; |
| 101 | char rest[256]; |
| 102 | FILE *fp; |
| 103 | char line[1024]; |
| 104 | |
| 105 | if (!(fp = fopen("/proc/mounts", "r"))) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 106 | LOGE("Error opening /proc/mounts (%s)", strerror(errno)); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 107 | return false; |
| 108 | } |
| 109 | |
| 110 | while(fgets(line, sizeof(line), fp)) { |
| 111 | line[strlen(line)-1] = '\0'; |
| 112 | sscanf(line, "%255s %255s %255s\n", device, mount_path, rest); |
| 113 | if (!strcmp(mount_path, mp)) { |
| 114 | fclose(fp); |
| 115 | return true; |
| 116 | } |
| 117 | |
| 118 | } |
| 119 | |
| 120 | fclose(fp); |
| 121 | return false; |
| 122 | } |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 123 | |
| 124 | /* |
| 125 | * Public functions |
| 126 | */ |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 127 | |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 128 | int volmgr_set_volume_key(char *mount_point, unsigned char *key) |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 129 | { |
| 130 | volume_t *v = volmgr_lookup_volume_by_mountpoint(mount_point, true); |
| 131 | |
| 132 | if (!v) |
| 133 | return -ENOENT; |
| 134 | |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 135 | if (v->media_type != media_devmapper) { |
| 136 | LOGE("Cannot set key on a non devmapper volume"); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 137 | pthread_mutex_unlock(&v->lock); |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 138 | return -EINVAL; |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 139 | } |
| 140 | |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 141 | memcpy(v->dm->key, key, sizeof(v->dm->key)); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 142 | pthread_mutex_unlock(&v->lock); |
| 143 | return 0; |
| 144 | } |
| 145 | |
| 146 | int volmgr_format_volume(char *mount_point) |
| 147 | { |
| 148 | int rc; |
| 149 | volume_t *v; |
| 150 | |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 151 | LOG_VOL("volmgr_format_volume(%s):", mount_point); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 152 | |
| 153 | v = volmgr_lookup_volume_by_mountpoint(mount_point, true); |
| 154 | |
| 155 | if (!v) |
| 156 | return -ENOENT; |
| 157 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 158 | if (v->state == volstate_mounted || |
| 159 | v->state == volstate_mounted_ro || |
| 160 | v->state == volstate_ums || |
| 161 | v->state == volstate_checking) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 162 | LOGE("Can't format '%s', currently in state %d", mount_point, v->state); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 163 | pthread_mutex_unlock(&v->lock); |
| 164 | return -EBUSY; |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 165 | } else if (v->state == volstate_nomedia && |
| 166 | v->media_type != media_devmapper) { |
| 167 | LOGE("Can't format '%s', (no media)", mount_point); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 168 | pthread_mutex_unlock(&v->lock); |
| 169 | return -ENOMEDIUM; |
| 170 | } |
| 171 | |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 172 | // XXX:Reject if the underlying source media is not present |
| 173 | |
| 174 | if (v->media_type == media_devmapper) { |
| 175 | if ((rc = devmapper_genesis(v->dm)) < 0) { |
| 176 | LOGE("devmapper genesis failed for %s (%d)", mount_point, rc); |
| 177 | pthread_mutex_unlock(&v->lock); |
| 178 | return rc; |
| 179 | } |
| 180 | } else { |
| 181 | if ((rc = initialize_mbr(v->dev->disk)) < 0) { |
| 182 | LOGE("MBR init failed for %s (%d)", mount_point, rc); |
| 183 | pthread_mutex_unlock(&v->lock); |
| 184 | return rc; |
| 185 | } |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 186 | } |
| 187 | |
| 188 | volume_setstate(v, volstate_formatting); |
| 189 | pthread_mutex_unlock(&v->lock); |
| 190 | return rc; |
| 191 | } |
| 192 | |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 193 | int volmgr_bootstrap(void) |
| 194 | { |
| 195 | int rc; |
| 196 | |
| 197 | if ((rc = volmgr_readconfig("/system/etc/vold.conf")) < 0) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 198 | LOGE("Unable to process config"); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 199 | return rc; |
| 200 | } |
| 201 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 202 | /* |
| 203 | * Check to see if any of our volumes is mounted |
| 204 | */ |
| 205 | volume_t *v = vol_root; |
| 206 | while (v) { |
| 207 | if (_mountpoint_mounted(v->mount_point)) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 208 | LOG_VOL("Volume '%s' already mounted at startup", v->mount_point); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 209 | v->state = volstate_mounted; |
| 210 | } |
| 211 | v = v->next; |
| 212 | } |
| 213 | |
| 214 | return 0; |
| 215 | } |
| 216 | |
| 217 | int volmgr_safe_mode(boolean enable) |
| 218 | { |
| 219 | if (enable == safe_mode) |
| 220 | return 0; |
| 221 | |
| 222 | safe_mode = enable; |
| 223 | |
| 224 | volume_t *v = vol_root; |
| 225 | int rc; |
| 226 | |
| 227 | while (v) { |
| 228 | pthread_mutex_lock(&v->lock); |
| 229 | if (v->state == volstate_mounted && v->fs) { |
| 230 | rc = v->fs->mount_fn(v->dev, v, safe_mode); |
| 231 | if (!rc) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 232 | LOG_VOL("Safe mode %s on %s", (enable ? "enabled" : "disabled"), v->mount_point); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 233 | } else { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 234 | LOGE("Failed to %s safe-mode on %s (%s)", |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 235 | (enable ? "enable" : "disable" ), v->mount_point, strerror(-rc)); |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | pthread_mutex_unlock(&v->lock); |
| 240 | v = v->next; |
| 241 | } |
| 242 | |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 243 | return 0; |
| 244 | } |
| 245 | |
| 246 | int volmgr_send_states(void) |
| 247 | { |
| 248 | volume_t *vol_scan = vol_root; |
| 249 | int rc; |
| 250 | |
| 251 | while (vol_scan) { |
| 252 | pthread_mutex_lock(&vol_scan->lock); |
| 253 | if ((rc = volume_send_state(vol_scan)) < 0) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 254 | LOGE("Error sending state to framework (%d)", rc); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 255 | } |
| 256 | pthread_mutex_unlock(&vol_scan->lock); |
| 257 | vol_scan = vol_scan->next; |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 258 | break; // XXX: |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 259 | } |
| 260 | |
| 261 | return 0; |
| 262 | } |
| 263 | |
| 264 | /* |
| 265 | * Called when a block device is ready to be |
| 266 | * evaluated by the volume manager. |
| 267 | */ |
| 268 | int volmgr_consider_disk(blkdev_t *dev) |
| 269 | { |
| 270 | volume_t *vol; |
| 271 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 272 | if (!(vol = volmgr_lookup_volume_by_mediapath(dev->media->devpath, true))) |
| 273 | return 0; |
| 274 | |
| 275 | pthread_mutex_lock(&vol->lock); |
| 276 | |
| 277 | if (vol->state == volstate_mounted) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 278 | LOGE("Volume %s already mounted (did we just crash?)", vol->mount_point); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 279 | pthread_mutex_unlock(&vol->lock); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 280 | return 0; |
| 281 | } |
| 282 | |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 283 | int rc = _volmgr_consider_disk_and_vol(vol, dev); |
| 284 | pthread_mutex_unlock(&vol->lock); |
| 285 | return rc; |
| 286 | } |
| 287 | |
| 288 | int volmgr_start_volume_by_mountpoint(char *mount_point) |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 289 | { |
| 290 | volume_t *v; |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 291 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 292 | v = volmgr_lookup_volume_by_mountpoint(mount_point, true); |
| 293 | if (!v) |
| 294 | return -ENOENT; |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 295 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 296 | if (v->media_type == media_devmapper) { |
| 297 | if (devmapper_start(v->dm) < 0) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 298 | LOGE("volmgr failed to start devmapper volume '%s'", |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 299 | v->mount_point); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 300 | } |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 301 | } else if (v->media_type == media_mmc) { |
| 302 | if (!v->dev) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 303 | LOGE("Cannot start volume '%s' (volume is not bound)", mount_point); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 304 | pthread_mutex_unlock(&v->lock); |
| 305 | return -ENOENT; |
| 306 | } |
| 307 | |
| 308 | if (_volmgr_consider_disk_and_vol(v, v->dev->disk) < 0) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 309 | LOGE("volmgr failed to start volume '%s'", v->mount_point); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 310 | } |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 311 | } |
| 312 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 313 | pthread_mutex_unlock(&v->lock); |
| 314 | return 0; |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 315 | } |
| 316 | |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 317 | static void _cb_volstopped_for_devmapper_teardown(volume_t *v, void *arg) |
| 318 | { |
| 319 | devmapper_stop(v->dm); |
| 320 | volume_setstate(v, volstate_nomedia); |
| 321 | pthread_mutex_unlock(&v->lock); |
| 322 | } |
| 323 | |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 324 | int volmgr_stop_volume_by_mountpoint(char *mount_point) |
| 325 | { |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 326 | int rc; |
| 327 | volume_t *v; |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 328 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 329 | v = volmgr_lookup_volume_by_mountpoint(mount_point, true); |
| 330 | if (!v) |
| 331 | return -ENOENT; |
| 332 | |
| 333 | if (v->state == volstate_mounted) |
| 334 | volmgr_send_eject_request(v); |
| 335 | |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 336 | if (v->media_type == media_devmapper) |
| 337 | rc = volmgr_shutdown_volume(v, _cb_volstopped_for_devmapper_teardown, false); |
| 338 | else |
| 339 | rc = volmgr_shutdown_volume(v, NULL, true); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 340 | |
| 341 | /* |
| 342 | * If shutdown returns -EINPROGRESS, |
| 343 | * do *not* release the lock as |
| 344 | * it is now owned by the reaper thread |
| 345 | */ |
| 346 | if (rc != -EINPROGRESS) { |
| 347 | if (rc) |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 348 | LOGE("unable to shutdown volume '%s'", v->mount_point); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 349 | pthread_mutex_unlock(&v->lock); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 350 | } |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 351 | return 0; |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 352 | } |
| 353 | |
| 354 | int volmgr_notify_eject(blkdev_t *dev, void (* cb) (blkdev_t *)) |
| 355 | { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 356 | LOG_VOL("Volmgr notified of %d:%d eject", dev->major, dev->minor); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 357 | |
| 358 | volume_t *v; |
| 359 | |
| 360 | // XXX: Partitioning support is going to need us to stop *all* |
| 361 | // devices in this volume |
| 362 | if (!(v = volmgr_lookup_volume_by_dev(dev))) { |
| 363 | if (cb) |
| 364 | cb(dev); |
| 365 | return 0; |
| 366 | } |
| 367 | |
| 368 | pthread_mutex_lock(&v->lock); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 369 | |
| 370 | volume_state_t old_state = v->state; |
| 371 | |
| 372 | if (v->state == volstate_mounted || |
| 373 | v->state == volstate_ums || |
| 374 | v->state == volstate_checking) |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 375 | volume_setstate(v, volstate_badremoval); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 376 | else if (v->state == volstate_formatting) { |
| 377 | /* |
| 378 | * The device is being ejected due to |
| 379 | * kernel disk revalidation. |
| 380 | */ |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 381 | LOG_VOL("Volmgr ignoring eject of %d:%d (volume formatting)", |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 382 | dev->major, dev->minor); |
| 383 | if (cb) |
| 384 | cb(dev); |
| 385 | pthread_mutex_unlock(&v->lock); |
| 386 | return 0; |
| 387 | } else |
| 388 | volume_setstate(v, volstate_nomedia); |
| 389 | |
| 390 | if (old_state == volstate_ums) { |
| 391 | ums_disable(v->ums_path); |
| 392 | pthread_mutex_unlock(&v->lock); |
| 393 | } else { |
| 394 | int rc = volmgr_stop_volume(v, _cb_volume_stopped_for_eject, cb, false); |
| 395 | if (rc != -EINPROGRESS) { |
| 396 | if (rc) |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 397 | LOGE("unable to shutdown volume '%s'", v->mount_point); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 398 | pthread_mutex_unlock(&v->lock); |
| 399 | } |
| 400 | } |
| 401 | return 0; |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 402 | } |
| 403 | |
| 404 | static void _cb_volume_stopped_for_eject(volume_t *v, void *arg) |
| 405 | { |
| 406 | void (* eject_cb) (blkdev_t *) = arg; |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 407 | |
| 408 | #if DEBUG_VOLMGR |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 409 | LOG_VOL("Volume %s has been stopped for eject", v->mount_point); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 410 | #endif |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 411 | |
| 412 | eject_cb(v->dev); |
| 413 | v->dev = NULL; // Clear dev because its being ejected |
| 414 | } |
| 415 | |
| 416 | /* |
| 417 | * Instructs the volume manager to enable or disable USB mass storage |
| 418 | * on any volumes configured to use it. |
| 419 | */ |
| 420 | int volmgr_enable_ums(boolean enable) |
| 421 | { |
| 422 | volume_t *v = vol_root; |
| 423 | |
| 424 | while(v) { |
| 425 | if (v->ums_path) { |
| 426 | int rc; |
| 427 | |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 428 | if (enable) { |
The Android Open Source Project | dcf3ce2 | 2009-01-22 00:13:45 -0800 | [diff] [blame] | 429 | pthread_mutex_lock(&v->lock); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 430 | if (v->state == volstate_mounted) |
| 431 | volmgr_send_eject_request(v); |
| 432 | else if (v->state == volstate_ums) { |
| 433 | pthread_mutex_unlock(&v->lock); |
| 434 | goto next_vol; |
| 435 | } |
| 436 | |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 437 | // Stop the volume, and enable UMS in the callback |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 438 | rc = volmgr_shutdown_volume(v, _cb_volstopped_for_ums_enable, false); |
| 439 | if (rc != -EINPROGRESS) { |
| 440 | if (rc) |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 441 | LOGE("unable to shutdown volume '%s'", v->mount_point); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 442 | pthread_mutex_unlock(&v->lock); |
| 443 | } |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 444 | } else { |
| 445 | // Disable UMS |
The Android Open Source Project | dcf3ce2 | 2009-01-22 00:13:45 -0800 | [diff] [blame] | 446 | pthread_mutex_lock(&v->lock); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 447 | if (v->state != volstate_ums) { |
| 448 | pthread_mutex_unlock(&v->lock); |
| 449 | goto next_vol; |
| 450 | } |
| 451 | |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 452 | if ((rc = ums_disable(v->ums_path)) < 0) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 453 | LOGE("unable to disable ums on '%s'", v->mount_point); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 454 | pthread_mutex_unlock(&v->lock); |
| 455 | continue; |
| 456 | } |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 457 | |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 458 | LOG_VOL("Kick-starting volume %d:%d after UMS disable", |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 459 | v->dev->disk->major, v->dev->disk->minor); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 460 | // Start volume |
| 461 | if ((rc = _volmgr_consider_disk_and_vol(v, v->dev->disk)) < 0) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 462 | LOGE("volmgr failed to consider disk %d:%d", |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 463 | v->dev->disk->major, v->dev->disk->minor); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 464 | } |
The Android Open Source Project | dcf3ce2 | 2009-01-22 00:13:45 -0800 | [diff] [blame] | 465 | pthread_mutex_unlock(&v->lock); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 466 | } |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 467 | } |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 468 | next_vol: |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 469 | v = v->next; |
| 470 | } |
| 471 | return 0; |
| 472 | } |
| 473 | |
| 474 | /* |
| 475 | * Static functions |
| 476 | */ |
| 477 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 478 | static int volmgr_send_eject_request(volume_t *v) |
| 479 | { |
| 480 | return send_msg_with_data(VOLD_EVT_EJECTING, v->mount_point); |
| 481 | } |
| 482 | |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 483 | // vol->lock must be held! |
| 484 | static int _volmgr_consider_disk_and_vol(volume_t *vol, blkdev_t *dev) |
| 485 | { |
| 486 | int rc = 0; |
| 487 | |
| 488 | #if DEBUG_VOLMGR |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 489 | LOG_VOL("volmgr_consider_disk_and_vol(%s, %d:%d):", vol->mount_point, |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 490 | dev->major, dev->minor); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 491 | #endif |
| 492 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 493 | if (vol->state == volstate_unknown || |
| 494 | vol->state == volstate_mounted || |
| 495 | vol->state == volstate_mounted_ro || |
| 496 | vol->state == volstate_damaged) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 497 | LOGE("Cannot consider volume '%s' because it is in state '%d", |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 498 | vol->mount_point, vol->state); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 499 | return -EADDRINUSE; |
| 500 | } |
| 501 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 502 | if (vol->state == volstate_formatting) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 503 | LOG_VOL("Evaluating dev '%s' for formattable filesystems for '%s'", |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 504 | dev->devpath, vol->mount_point); |
| 505 | /* |
| 506 | * Since we only support creating 1 partition (right now), |
| 507 | * we can just lookup the target by devno |
| 508 | */ |
| 509 | blkdev_t *part = blkdev_lookup_by_devno(dev->major, 1); |
| 510 | if (!part) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 511 | part = blkdev_lookup_by_devno(dev->major, 0); |
| 512 | if (!part) { |
| 513 | LOGE("Unable to find device to format"); |
| 514 | return -ENODEV; |
| 515 | } |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 516 | } |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 517 | |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 518 | if ((rc = format_partition(part, |
| 519 | vol->media_type == media_devmapper ? |
| 520 | FORMAT_TYPE_EXT2 : FORMAT_TYPE_FAT32)) < 0) { |
| 521 | LOGE("format failed (%d)", rc); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 522 | return rc; |
| 523 | } |
| 524 | |
| 525 | } |
| 526 | |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 527 | LOG_VOL("Evaluating dev '%s' for mountable filesystems for '%s'", |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 528 | dev->devpath, vol->mount_point); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 529 | |
| 530 | if (dev->nr_parts == 0) { |
| 531 | rc = _volmgr_start(vol, dev); |
| 532 | #if DEBUG_VOLMGR |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 533 | LOG_VOL("_volmgr_start(%s, %d:%d) rc = %d", vol->mount_point, |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 534 | dev->major, dev->minor, rc); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 535 | #endif |
| 536 | } else { |
| 537 | /* |
| 538 | * Device has multiple partitions |
| 539 | * This is where interesting partition policies could be implemented. |
| 540 | * For now just try them in sequence until one succeeds |
| 541 | */ |
| 542 | |
| 543 | rc = -ENODEV; |
| 544 | int i; |
| 545 | for (i = 0; i < dev->nr_parts; i++) { |
| 546 | blkdev_t *part = blkdev_lookup_by_devno(dev->major, (i+1)); |
| 547 | if (!part) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 548 | LOGE("Error - unable to lookup partition for blkdev %d:%d", dev->major, (i+1)); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 549 | continue; |
| 550 | } |
| 551 | rc = _volmgr_start(vol, part); |
| 552 | #if DEBUG_VOLMGR |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 553 | LOG_VOL("_volmgr_start(%s, %d:%d) rc = %d", |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 554 | vol->mount_point, part->major, part->minor, rc); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 555 | #endif |
| 556 | if (!rc) |
| 557 | break; |
| 558 | } |
| 559 | |
| 560 | if (rc == -ENODEV) { |
| 561 | // Assert to make sure each partition had a backing blkdev |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 562 | LOGE("Internal consistency error"); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 563 | return 0; |
| 564 | } |
| 565 | } |
| 566 | |
| 567 | if (rc == -ENODATA) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 568 | LOGE("Device %d:%d contains no usable filesystems", |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 569 | dev->major, dev->minor); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 570 | rc = 0; |
| 571 | } |
| 572 | |
| 573 | return rc; |
| 574 | } |
| 575 | |
| 576 | static void volmgr_reaper_thread_sighandler(int signo) |
| 577 | { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 578 | LOGE("Volume reaper thread got signal %d", signo); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 579 | } |
| 580 | |
| 581 | static void __reaper_cleanup(void *arg) |
| 582 | { |
| 583 | volume_t *vol = (volume_t *) arg; |
| 584 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 585 | if (vol->worker_args.reaper_args.cb) |
| 586 | vol->worker_args.reaper_args.cb(vol, vol->worker_args.reaper_args.cb_arg); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 587 | |
| 588 | vol->worker_running = false; |
| 589 | |
| 590 | // Wake up anyone that was waiting on this thread |
| 591 | pthread_mutex_unlock(&vol->worker_sem); |
| 592 | |
| 593 | // Unlock the volume |
| 594 | pthread_mutex_unlock(&vol->lock); |
| 595 | } |
| 596 | |
| 597 | static void *volmgr_reaper_thread(void *arg) |
| 598 | { |
| 599 | volume_t *vol = (volume_t *) arg; |
| 600 | |
| 601 | pthread_cleanup_push(__reaper_cleanup, arg); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 602 | |
| 603 | vol->worker_running = true; |
| 604 | vol->worker_pid = getpid(); |
| 605 | |
| 606 | struct sigaction actions; |
| 607 | |
| 608 | memset(&actions, 0, sizeof(actions)); |
| 609 | sigemptyset(&actions.sa_mask); |
| 610 | actions.sa_flags = 0; |
| 611 | actions.sa_handler = volmgr_reaper_thread_sighandler; |
| 612 | sigaction(SIGUSR1, &actions, NULL); |
| 613 | |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 614 | LOG_VOL("Reaper here - working on %s", vol->mount_point); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 615 | |
| 616 | boolean send_sig_kill = false; |
| 617 | int i, rc; |
| 618 | |
| 619 | for (i = 0; i < 10; i++) { |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 620 | errno = 0; |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 621 | rc = umount(vol->mount_point); |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 622 | LOG_VOL("volmngr reaper umount(%s) attempt %d (%s)", |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 623 | vol->mount_point, i + 1, strerror(errno)); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 624 | if (!rc) |
| 625 | break; |
| 626 | if (rc && (errno == EINVAL || errno == ENOENT)) { |
| 627 | rc = 0; |
| 628 | break; |
| 629 | } |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 630 | sleep(1); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 631 | if (i >= 4) { |
| 632 | KillProcessesWithOpenFiles(vol->mount_point, send_sig_kill, NULL, 0); |
| 633 | if (!send_sig_kill) |
| 634 | send_sig_kill = true; |
| 635 | } |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 636 | } |
| 637 | |
| 638 | if (!rc) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 639 | LOG_VOL("Reaper sucessfully unmounted %s", vol->mount_point); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 640 | vol->fs = NULL; |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 641 | volume_setstate(vol, volstate_unmounted); |
| 642 | } else { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 643 | LOGE("Unable to unmount!! (%d)", rc); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 644 | } |
| 645 | |
| 646 | out: |
| 647 | pthread_cleanup_pop(1); |
| 648 | pthread_exit(NULL); |
| 649 | return NULL; |
| 650 | } |
| 651 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 652 | // vol->lock must be held! |
| 653 | static void volmgr_uncage_reaper(volume_t *vol, void (* cb) (volume_t *, void *arg), void *arg) |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 654 | { |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 655 | |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 656 | if (vol->worker_running) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 657 | LOGE("Worker thread is currently running.. waiting.."); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 658 | pthread_mutex_lock(&vol->worker_sem); |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 659 | LOG_VOL("Worker thread now available"); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 660 | } |
| 661 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 662 | vol->worker_args.reaper_args.cb = cb; |
| 663 | vol->worker_args.reaper_args.cb_arg = arg; |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 664 | |
| 665 | pthread_attr_t attr; |
| 666 | pthread_attr_init(&attr); |
| 667 | pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); |
| 668 | |
| 669 | pthread_create(&vol->worker_thread, &attr, volmgr_reaper_thread, vol); |
| 670 | } |
| 671 | |
| 672 | static int volmgr_stop_volume(volume_t *v, void (*cb) (volume_t *, void *), void *arg, boolean emit_statechange) |
| 673 | { |
| 674 | int i, rc; |
| 675 | |
| 676 | if (v->state == volstate_mounted || v->state == volstate_badremoval) { |
| 677 | // Try to unmount right away (5 retries) |
| 678 | for (i = 0; i < 5; i++) { |
| 679 | rc = umount(v->mount_point); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 680 | if (!rc) |
| 681 | break; |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 682 | |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 683 | if (rc && (errno == EINVAL || errno == ENOENT)) { |
| 684 | rc = 0; |
| 685 | break; |
| 686 | } |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 687 | |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 688 | LOG_VOL("volmngr quick stop umount(%s) attempt %d (%s)", |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 689 | v->mount_point, i + 1, strerror(errno)); |
| 690 | |
| 691 | if (i == 0) |
| 692 | usleep(1000 * 250); // First failure, sleep for 250 ms |
| 693 | else |
| 694 | sched_yield(); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 695 | } |
| 696 | |
| 697 | if (!rc) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 698 | LOG_VOL("volmgr_stop_volume(%s): Volume unmounted sucessfully", |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 699 | v->mount_point); |
| 700 | if (emit_statechange) |
| 701 | volume_setstate(v, volstate_unmounted); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 702 | v->fs = NULL; |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 703 | goto out_cb_immed; |
| 704 | } |
| 705 | |
| 706 | /* |
| 707 | * Since the volume is still in use, dispatch the stopping to |
| 708 | * a thread |
| 709 | */ |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 710 | LOG_VOL("Volume %s is busy (%d) - uncaging the reaper", v->mount_point, rc); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 711 | volmgr_uncage_reaper(v, cb, arg); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 712 | return -EINPROGRESS; |
| 713 | } else if (v->state == volstate_checking) { |
| 714 | volume_setstate(v, volstate_unmounted); |
| 715 | if (v->worker_running) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 716 | LOG_VOL("Cancelling worker thread"); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 717 | pthread_kill(v->worker_thread, SIGUSR1); |
| 718 | } else |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 719 | LOGE("Strange... we were in checking state but worker thread wasn't running.."); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 720 | goto out_cb_immed; |
| 721 | } |
| 722 | |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 723 | out_cb_immed: |
| 724 | if (cb) |
| 725 | cb(v, arg); |
| 726 | return 0; |
| 727 | } |
| 728 | |
| 729 | |
| 730 | /* |
| 731 | * Gracefully stop a volume |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 732 | * v->lock must be held! |
| 733 | * if we return -EINPROGRESS, do NOT release the lock as the reaper |
| 734 | * is using the volume |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 735 | */ |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 736 | static int volmgr_shutdown_volume(volume_t *v, void (* cb) (volume_t *, void *), boolean emit_statechange) |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 737 | { |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 738 | return volmgr_stop_volume(v, cb, NULL, emit_statechange); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 739 | } |
| 740 | |
| 741 | static void _cb_volume_stopped_for_shutdown(volume_t *v, void *arg) |
| 742 | { |
| 743 | void (* shutdown_cb) (volume_t *) = arg; |
| 744 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 745 | #if DEBUG_VOLMGR |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 746 | LOG_VOL("Volume %s has been stopped for shutdown", v->mount_point); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 747 | #endif |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 748 | shutdown_cb(v); |
| 749 | } |
| 750 | |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 751 | |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 752 | /* |
| 753 | * Called when a volume is sucessfully unmounted for UMS enable |
| 754 | */ |
The Android Open Source Project | dcf3ce2 | 2009-01-22 00:13:45 -0800 | [diff] [blame] | 755 | static void _cb_volstopped_for_ums_enable(volume_t *v, void *arg) |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 756 | { |
| 757 | int rc; |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 758 | char *devdir_path; |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 759 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 760 | #if DEBUG_VOLMGR |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 761 | LOG_VOL("_cb_volstopped_for_ums_enable(%s):", v->mount_point); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 762 | #endif |
| 763 | devdir_path = blkdev_get_devpath(v->dev->disk); |
| 764 | |
| 765 | if ((rc = ums_enable(devdir_path, v->ums_path)) < 0) { |
| 766 | free(devdir_path); |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 767 | LOGE("Error enabling ums (%d)", rc); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 768 | return; |
| 769 | } |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 770 | free(devdir_path); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 771 | volume_setstate(v, volstate_ums); |
The Android Open Source Project | dcf3ce2 | 2009-01-22 00:13:45 -0800 | [diff] [blame] | 772 | pthread_mutex_unlock(&v->lock); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 773 | } |
| 774 | |
| 775 | static int volmgr_readconfig(char *cfg_path) |
| 776 | { |
| 777 | cnode *root = config_node("", ""); |
| 778 | cnode *node; |
| 779 | |
| 780 | config_load_file(root, cfg_path); |
| 781 | node = root->first_child; |
| 782 | |
| 783 | while (node) { |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 784 | if (!strncmp(node->name, "volume_", 7)) |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 785 | volmgr_config_volume(node); |
| 786 | else |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 787 | LOGE("Skipping unknown configuration node '%s'", node->name); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 788 | node = node->next; |
| 789 | } |
| 790 | return 0; |
| 791 | } |
| 792 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 793 | static void volmgr_add_mediapath_to_volume(volume_t *v, char *media_path) |
| 794 | { |
| 795 | int i; |
| 796 | |
| 797 | #if DEBUG_VOLMGR |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 798 | LOG_VOL("volmgr_add_mediapath_to_volume(%p, %s):", v, media_path); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 799 | #endif |
| 800 | for (i = 0; i < VOLMGR_MAX_MEDIAPATHS_PER_VOLUME; i++) { |
| 801 | if (!v->media_paths[i]) { |
| 802 | v->media_paths[i] = strdup(media_path); |
| 803 | return; |
| 804 | } |
| 805 | } |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 806 | LOGE("Unable to add media path '%s' to volume (out of media slots)", media_path); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 807 | } |
| 808 | |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 809 | static int volmgr_config_volume(cnode *node) |
| 810 | { |
| 811 | volume_t *new; |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 812 | int rc = 0, i; |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 813 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 814 | char *dm_src, *dm_src_type, *dm_tgt, *dm_param, *dm_tgtfs; |
| 815 | uint32_t dm_size_mb = 0; |
| 816 | |
| 817 | dm_src = dm_src_type = dm_tgt = dm_param = dm_tgtfs = NULL; |
| 818 | #if DEBUG_VOLMGR |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 819 | LOG_VOL("volmgr_configure_volume(%s):", node->name); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 820 | #endif |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 821 | if (!(new = malloc(sizeof(volume_t)))) |
| 822 | return -ENOMEM; |
| 823 | memset(new, 0, sizeof(volume_t)); |
| 824 | |
| 825 | new->state = volstate_nomedia; |
| 826 | pthread_mutex_init(&new->lock, NULL); |
| 827 | pthread_mutex_init(&new->worker_sem, NULL); |
| 828 | |
| 829 | cnode *child = node->first_child; |
| 830 | |
| 831 | while (child) { |
| 832 | if (!strcmp(child->name, "media_path")) |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 833 | volmgr_add_mediapath_to_volume(new, child->value); |
| 834 | else if (!strcmp(child->name, "emu_media_path")) |
| 835 | volmgr_add_mediapath_to_volume(new, child->value); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 836 | else if (!strcmp(child->name, "media_type")) { |
| 837 | if (!strcmp(child->value, "mmc")) |
| 838 | new->media_type = media_mmc; |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 839 | else if (!strcmp(child->value, "devmapper")) |
| 840 | new->media_type = media_devmapper; |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 841 | else { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 842 | LOGE("Invalid media type '%s'", child->value); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 843 | rc = -EINVAL; |
| 844 | goto out_free; |
| 845 | } |
| 846 | } else if (!strcmp(child->name, "mount_point")) |
| 847 | new->mount_point = strdup(child->value); |
| 848 | else if (!strcmp(child->name, "ums_path")) |
| 849 | new->ums_path = strdup(child->value); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 850 | else if (!strcmp(child->name, "dm_src")) |
| 851 | dm_src = strdup(child->value); |
| 852 | else if (!strcmp(child->name, "dm_src_type")) |
| 853 | dm_src_type = strdup(child->value); |
| 854 | else if (!strcmp(child->name, "dm_src_size_mb")) |
| 855 | dm_size_mb = atoi(child->value); |
| 856 | else if (!strcmp(child->name, "dm_target")) |
| 857 | dm_tgt = strdup(child->value); |
| 858 | else if (!strcmp(child->name, "dm_target_params")) |
| 859 | dm_param = strdup(child->value); |
| 860 | else if (!strcmp(child->name, "dm_target_fs")) |
| 861 | dm_tgtfs = strdup(child->value); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 862 | else |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 863 | LOGE("Ignoring unknown config entry '%s'", child->name); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 864 | child = child->next; |
| 865 | } |
| 866 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 867 | if (new->media_type == media_mmc) { |
| 868 | if (!new->media_paths[0] || !new->mount_point || new->media_type == media_unknown) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 869 | LOGE("Required configuration parameter missing for mmc volume"); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 870 | rc = -EINVAL; |
| 871 | goto out_free; |
| 872 | } |
| 873 | } else if (new->media_type == media_devmapper) { |
| 874 | if (!dm_src || !dm_src_type || !dm_tgt || |
| 875 | !dm_param || !dm_tgtfs || !dm_size_mb) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 876 | LOGE("Required configuration parameter missing for devmapper volume"); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 877 | rc = -EINVAL; |
| 878 | goto out_free; |
| 879 | } |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 880 | |
| 881 | char dm_mediapath[255]; |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 882 | if (!(new->dm = devmapper_init(dm_src, dm_src_type, dm_size_mb, |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 883 | dm_tgt, dm_param, dm_tgtfs, dm_mediapath))) { |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 884 | LOGE("Unable to initialize devmapping"); |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 885 | goto out_free; |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 886 | } |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 887 | LOG_VOL("media path for devmapper volume = '%s'", dm_mediapath); |
| 888 | volmgr_add_mediapath_to_volume(new, dm_mediapath); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 889 | } |
| 890 | |
| 891 | if (!vol_root) |
| 892 | vol_root = new; |
| 893 | else { |
| 894 | volume_t *scan = vol_root; |
| 895 | while (scan->next) |
| 896 | scan = scan->next; |
| 897 | scan->next = new; |
| 898 | } |
| 899 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 900 | if (dm_src) |
| 901 | free(dm_src); |
| 902 | if (dm_src_type) |
| 903 | free(dm_src_type); |
| 904 | if (dm_tgt) |
| 905 | free(dm_tgt); |
| 906 | if (dm_param) |
| 907 | free(dm_param); |
| 908 | if (dm_tgtfs) |
| 909 | free(dm_tgtfs); |
| 910 | |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 911 | return rc; |
| 912 | |
| 913 | out_free: |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 914 | |
| 915 | if (dm_src) |
| 916 | free(dm_src); |
| 917 | if (dm_src_type) |
| 918 | free(dm_src_type); |
| 919 | if (dm_tgt) |
| 920 | free(dm_tgt); |
| 921 | if (dm_param) |
| 922 | free(dm_param); |
| 923 | if (dm_tgtfs) |
| 924 | free(dm_tgtfs); |
| 925 | |
| 926 | |
| 927 | for (i = 0; i < VOLMGR_MAX_MEDIAPATHS_PER_VOLUME; i++) { |
| 928 | if (new->media_paths[i]) |
| 929 | free(new->media_paths[i]); |
| 930 | } |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 931 | if (new->mount_point) |
| 932 | free(new->mount_point); |
| 933 | if (new->ums_path) |
| 934 | free(new->ums_path); |
| 935 | return rc; |
| 936 | } |
| 937 | |
| 938 | static volume_t *volmgr_lookup_volume_by_dev(blkdev_t *dev) |
| 939 | { |
| 940 | volume_t *scan = vol_root; |
| 941 | while(scan) { |
| 942 | if (scan->dev == dev) |
| 943 | return scan; |
| 944 | scan = scan->next; |
| 945 | } |
| 946 | return NULL; |
| 947 | } |
| 948 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 949 | static volume_t *volmgr_lookup_volume_by_mountpoint(char *mount_point, boolean leave_locked) |
| 950 | { |
| 951 | volume_t *v = vol_root; |
| 952 | |
| 953 | while(v) { |
| 954 | pthread_mutex_lock(&v->lock); |
| 955 | if (!strcmp(v->mount_point, mount_point)) { |
| 956 | if (!leave_locked) |
| 957 | pthread_mutex_unlock(&v->lock); |
| 958 | return v; |
| 959 | } |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 960 | pthread_mutex_unlock(&v->lock); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 961 | v = v->next; |
| 962 | } |
| 963 | return NULL; |
| 964 | } |
| 965 | |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 966 | static volume_t *volmgr_lookup_volume_by_mediapath(char *media_path, boolean fuzzy) |
| 967 | { |
| 968 | volume_t *scan = vol_root; |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 969 | int i; |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 970 | |
| 971 | while (scan) { |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 972 | |
| 973 | for (i = 0; i < VOLMGR_MAX_MEDIAPATHS_PER_VOLUME; i++) { |
| 974 | if (!scan->media_paths[i]) |
| 975 | continue; |
| 976 | |
| 977 | if (fuzzy && !strncmp(media_path, scan->media_paths[i], strlen(scan->media_paths[i]))) |
| 978 | return scan; |
| 979 | else if (!fuzzy && !strcmp(media_path, scan->media_paths[i])) |
| 980 | return scan; |
| 981 | } |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 982 | |
| 983 | scan = scan->next; |
| 984 | } |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 985 | return NULL; |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 986 | } |
| 987 | |
| 988 | /* |
| 989 | * Attempt to bring a volume online |
| 990 | * Returns: 0 on success, errno on failure, with the following exceptions: |
| 991 | * - ENODATA - Unsupported filesystem type / blank |
| 992 | * vol->lock MUST be held! |
| 993 | */ |
| 994 | static int _volmgr_start(volume_t *vol, blkdev_t *dev) |
| 995 | { |
| 996 | struct volmgr_fstable_entry *fs; |
| 997 | int rc = ENODATA; |
| 998 | |
| 999 | #if DEBUG_VOLMGR |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 1000 | LOG_VOL("_volmgr_start(%s, %d:%d):", vol->mount_point, |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 1001 | dev->major, dev->minor); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 1002 | #endif |
| 1003 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 1004 | if (vol->state == volstate_mounted) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 1005 | LOGE("Unable to start volume '%s' (already mounted)", vol->mount_point); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 1006 | return -EBUSY; |
| 1007 | } |
| 1008 | |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 1009 | for (fs = fs_table; fs->name; fs++) { |
| 1010 | if (!fs->identify_fn(dev)) |
| 1011 | break; |
| 1012 | } |
| 1013 | |
| 1014 | if (!fs) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 1015 | LOGE("No supported filesystems on %d:%d", dev->major, dev->minor); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 1016 | volume_setstate(vol, volstate_nofs); |
| 1017 | return -ENODATA; |
| 1018 | } |
| 1019 | |
| 1020 | return volmgr_start_fs(fs, vol, dev); |
| 1021 | } |
| 1022 | |
| 1023 | // vol->lock MUST be held! |
| 1024 | static int volmgr_start_fs(struct volmgr_fstable_entry *fs, volume_t *vol, blkdev_t *dev) |
| 1025 | { |
| 1026 | /* |
| 1027 | * Spawn a thread to do the actual checking / mounting in |
| 1028 | */ |
| 1029 | |
| 1030 | if (vol->worker_running) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 1031 | LOGE("Worker thread is currently running.. waiting.."); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 1032 | pthread_mutex_lock(&vol->worker_sem); |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 1033 | LOG_VOL("Worker thread now available"); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 1034 | } |
| 1035 | |
| 1036 | vol->dev = dev; |
| 1037 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 1038 | vol->worker_args.start_args.fs = fs; |
| 1039 | vol->worker_args.start_args.dev = dev; |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 1040 | |
| 1041 | pthread_attr_t attr; |
| 1042 | pthread_attr_init(&attr); |
| 1043 | pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); |
| 1044 | |
| 1045 | pthread_create(&vol->worker_thread, &attr, volmgr_start_fs_thread, vol); |
| 1046 | |
| 1047 | return 0; |
| 1048 | } |
| 1049 | |
| 1050 | static void __start_fs_thread_lock_cleanup(void *arg) |
| 1051 | { |
| 1052 | volume_t *vol = (volume_t *) arg; |
| 1053 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 1054 | #if DEBUG_VOLMGR |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 1055 | LOG_VOL("__start_fs_thread_lock_cleanup(%s):", vol->mount_point); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 1056 | #endif |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 1057 | |
| 1058 | vol->worker_running = false; |
| 1059 | |
| 1060 | // Wake up anyone that was waiting on this thread |
| 1061 | pthread_mutex_unlock(&vol->worker_sem); |
| 1062 | |
| 1063 | // Unlock the volume |
| 1064 | pthread_mutex_unlock(&vol->lock); |
| 1065 | } |
| 1066 | |
| 1067 | static void *volmgr_start_fs_thread(void *arg) |
| 1068 | { |
| 1069 | volume_t *vol = (volume_t *) arg; |
| 1070 | |
| 1071 | pthread_cleanup_push(__start_fs_thread_lock_cleanup, arg); |
| 1072 | pthread_mutex_lock(&vol->lock); |
| 1073 | |
| 1074 | vol->worker_running = true; |
| 1075 | vol->worker_pid = getpid(); |
| 1076 | |
| 1077 | struct sigaction actions; |
| 1078 | |
| 1079 | memset(&actions, 0, sizeof(actions)); |
| 1080 | sigemptyset(&actions.sa_mask); |
| 1081 | actions.sa_flags = 0; |
| 1082 | actions.sa_handler = volmgr_start_fs_thread_sighandler; |
| 1083 | sigaction(SIGUSR1, &actions, NULL); |
| 1084 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 1085 | struct volmgr_fstable_entry *fs = vol->worker_args.start_args.fs; |
| 1086 | blkdev_t *dev = vol->worker_args.start_args.dev; |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 1087 | int rc; |
| 1088 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 1089 | #if DEBUG_VOLMGR |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 1090 | LOG_VOL("Worker thread pid %d starting %s fs %d:%d on %s", getpid(), |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 1091 | fs->name, dev->major, dev->minor, vol->mount_point); |
| 1092 | #endif |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 1093 | |
| 1094 | if (fs->check_fn) { |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 1095 | #if DEBUG_VOLMGR |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 1096 | LOG_VOL("Starting %s filesystem check on %d:%d", fs->name, |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 1097 | dev->major, dev->minor); |
| 1098 | #endif |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 1099 | volume_setstate(vol, volstate_checking); |
| 1100 | pthread_mutex_unlock(&vol->lock); |
| 1101 | rc = fs->check_fn(dev); |
| 1102 | pthread_mutex_lock(&vol->lock); |
| 1103 | if (vol->state != volstate_checking) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 1104 | LOG_VOL("filesystem check aborted"); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 1105 | goto out; |
| 1106 | } |
| 1107 | |
| 1108 | if (rc < 0) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 1109 | LOGE("%s filesystem check failed on %d:%d (%s)", fs->name, |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 1110 | dev->major, dev->minor, strerror(-rc)); |
| 1111 | if (rc == -ENODATA) { |
| 1112 | volume_setstate(vol, volstate_nofs); |
| 1113 | goto out; |
| 1114 | } |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 1115 | goto out_unmountable; |
| 1116 | } |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 1117 | #if DEBUG_VOLMGR |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 1118 | LOG_VOL("%s filesystem check of %d:%d OK", fs->name, |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 1119 | dev->major, dev->minor); |
| 1120 | #endif |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 1121 | } |
| 1122 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 1123 | rc = fs->mount_fn(dev, vol, safe_mode); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 1124 | if (!rc) { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 1125 | LOG_VOL("Sucessfully mounted %s filesystem %d:%d on %s (safe-mode %s)", |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 1126 | fs->name, dev->major, dev->minor, vol->mount_point, |
| 1127 | (safe_mode ? "on" : "off")); |
| 1128 | vol->fs = fs; |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 1129 | volume_setstate(vol, volstate_mounted); |
| 1130 | goto out; |
| 1131 | } |
| 1132 | |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 1133 | LOGE("%s filesystem mount of %d:%d failed (%d)", fs->name, dev->major, |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 1134 | dev->minor, rc); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 1135 | |
| 1136 | out_unmountable: |
| 1137 | volume_setstate(vol, volstate_damaged); |
| 1138 | out: |
| 1139 | pthread_cleanup_pop(1); |
| 1140 | pthread_exit(NULL); |
| 1141 | return NULL; |
| 1142 | } |
| 1143 | |
| 1144 | static void volmgr_start_fs_thread_sighandler(int signo) |
| 1145 | { |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 1146 | LOGE("Volume startup thread got signal %d", signo); |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 1147 | } |
| 1148 | |
| 1149 | static void volume_setstate(volume_t *vol, volume_state_t state) |
| 1150 | { |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 1151 | if (state == vol->state) |
| 1152 | return; |
| 1153 | |
| 1154 | #if DEBUG_VOLMGR |
The Android Open Source Project | 1b8e5a6 | 2009-02-13 12:57:54 -0800 | [diff] [blame^] | 1155 | LOG_VOL("Volume %s state change from %d -> %d", vol->mount_point, vol->state, state); |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 1156 | #endif |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 1157 | |
| 1158 | vol->state = state; |
| 1159 | |
| 1160 | char *prop_val = conv_volstate_to_propstr(vol->state); |
| 1161 | |
The Android Open Source Project | 13f797d | 2009-02-10 15:44:07 -0800 | [diff] [blame] | 1162 | if (prop_val) { |
| 1163 | property_set(PROP_EXTERNAL_STORAGE_STATE, prop_val); |
| 1164 | volume_send_state(vol); |
| 1165 | } |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 1166 | } |
| 1167 | |
| 1168 | static int volume_send_state(volume_t *vol) |
| 1169 | { |
| 1170 | char *event = conv_volstate_to_eventstr(vol->state); |
| 1171 | |
| 1172 | return send_msg_with_data(event, vol->mount_point); |
| 1173 | } |
| 1174 | |
| 1175 | static char *conv_volstate_to_eventstr(volume_state_t state) |
| 1176 | { |
| 1177 | int i; |
| 1178 | |
| 1179 | for (i = 0; volume_state_strings[i].event != NULL; i++) { |
| 1180 | if (volume_state_strings[i].state == state) |
| 1181 | break; |
| 1182 | } |
| 1183 | |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 1184 | return volume_state_strings[i].event; |
| 1185 | } |
| 1186 | |
| 1187 | static char *conv_volstate_to_propstr(volume_state_t state) |
| 1188 | { |
| 1189 | int i; |
| 1190 | |
| 1191 | for (i = 0; volume_state_strings[i].event != NULL; i++) { |
| 1192 | if (volume_state_strings[i].state == state) |
| 1193 | break; |
| 1194 | } |
| 1195 | |
The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame] | 1196 | return volume_state_strings[i].property_val; |
| 1197 | } |
| 1198 | |