plugin/app2sd/server/app2sd_internals.c

   1 /*
   2  * app2ext
   3  *
   4  * Copyright (c) 2012 Samsung Electronics Co., Ltd. All rights reserved.
   5  *
   6  * Contact: Garima Shrivastava<garima.s@samsung.com>
   7  *      Jyotsna Dhumale <jyotsna.a@samsung.com>
   8  *      Venkatesha Sarpangala <sarpangala.v@samsung.com>
   9  *
  10  * Licensed under the Apache License, Version 2.0 (the "License");
  11  * you may not use this file except in compliance with the License.
  12  * You may obtain a copy of the License at
  13  *
  14  * http://www.apache.org/licenses/LICENSE-2.0
  15  *
  16  * Unless required by applicable law or agreed to in writing, software
  17  * distributed under the License is distributed on an "AS IS" BASIS,
  18  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  19  * See the License for the specific language governing permissions and
  20  * limitations under the License.
  21  *
  22  */
  23
  24 #define _GNU_SOURCE
  25 #include <dirent.h>
  26 #include <time.h>
  27 #include <pwd.h>
  28
  29 #include "app2sd_internals.h"
  30
  31 #define DMCRYPT_ITER_TIME       50
  32 #define DMCRYPT_KEY_LEN         128
  33
  34 static int _app2sd_make_directory(const char *path, uid_t uid)
  35 {
  36         int ret;
  37         int fd;
  38         mode_t mode = DIR_PERMS;
  39         struct passwd pwd;
  40         struct passwd *pwd_result;
  41         char buf[1024];
  42
  43         ret = _app2sd_delete_directory(path);
  44         if (ret) {
  45                 _E("unable to delete (%s), errno(%d)", path, errno);
  46                 return APP2EXT_ERROR_DELETE_DIRECTORY;
  47         }
  48
  49         ret = getpwuid_r(uid, &pwd, buf, sizeof(buf), &pwd_result);
  50         if (ret != 0 || pwd_result == NULL) {
  51                 _E("get uid failed(%d)", ret);
  52                 return APP2EXT_ERROR_ACCESS_FILE;
  53         }
  54         _D("uid(%d), gid(%d)", uid, pwd.pw_gid);
  55
  56         /* create directory */
  57         ret = mkdir(path, mode);
  58         if (ret) {
  59                 if (errno != EEXIST) {
  60                         _E("create directory failed, error is (%d)", errno);
  61                         return APP2EXT_ERROR_CREATE_DIRECTORY;
  62                 }
  63         }
  64
  65         fd = open(path, O_RDONLY|O_DIRECTORY);
  66         if (fd < 0) {
  67                 _E("can't open path(%s)", path);
  68                 return APP2EXT_ERROR_OPEN_DIR;
  69         }
  70
  71         ret = fchmod(fd, 0755);
  72         if (ret < 0) {
  73                 _E("change file permission error");
  74                 close(fd);
  75                 return APP2EXT_ERROR_ACCESS_FILE;
  76         }
  77
  78         ret = fchown(fd, uid, pwd.pw_gid);
  79         if (ret < 0) {
  80                 _E("change file owner error");
  81                 close(fd);
  82                 return APP2EXT_ERROR_ACCESS_FILE;
  83         }
  84
  85         close(fd);
  86
  87         return APP2EXT_SUCCESS;
  88 }
  89
  90 int _app2sd_dmcrypt_setup_device(const char *pkgid,
  91                 const char *loopback_device, bool is_dup, uid_t uid)
  92 {
  93         int ret;
  94         char *passwd;
  95         char dmcrypt_setup_cmd[BUF_SIZE];
  96         char err_buf[BUF_SIZE];
  97         const char *err_str;
  98
  99         if (pkgid == NULL || loopback_device == NULL) {
 100                 _E("invalid argument");
 101                 return APP2EXT_ERROR_INVALID_ARGUMENTS;
 102         }
 103
 104         /* get password for dmcrypt encryption */
 105         ret = _app2sd_initialize_db();
 106         if (ret) {
 107                 _E("app2sd db initialize failed");
 108                 return APP2EXT_ERROR_DB_INITIALIZE;
 109         }
 110
 111         passwd = _app2sd_get_password_from_db(pkgid, uid);
 112         if (passwd == NULL) {
 113                 if (is_dup) {
 114                         _E("no password found for (%s)", pkgid);
 115                         return APP2EXT_ERROR_SQLITE_REGISTRY;
 116                 }
 117                 passwd = _app2sd_generate_password();
 118                 if (passwd == NULL) {
 119                         _E("unable to generate password");
 120                         return APP2EXT_ERROR_PASSWD_GENERATION;
 121                 }
 122
 123                 ret = _app2sd_set_info_in_db(pkgid, passwd, loopback_device,
 124                                 uid);
 125                 if (ret < 0) {
 126                         _E("unable to save password");
 127                         free(passwd);
 128                         return APP2EXT_ERROR_SQLITE_REGISTRY;
 129                 }
 130         }
 131
 132         snprintf(dmcrypt_setup_cmd, sizeof(dmcrypt_setup_cmd),
 133                         "/bin/echo '%s' | /sbin/cryptsetup -q -i %d "
 134                         "-c aes-cbc-lmk -s %d --align-payload=8 luksFormat %s",
 135                         passwd, DMCRYPT_ITER_TIME, DMCRYPT_KEY_LEN,
 136                         loopback_device);
 137         memset(passwd, 0, strlen(passwd));
 138         free(passwd);
 139         ret = system(dmcrypt_setup_cmd);
 140         memset(dmcrypt_setup_cmd, 0, BUF_SIZE);
 141         if (ret) {
 142                 err_str = strerror_r(errno, err_buf, sizeof(err_buf));
 143                 _E("Error setting up dmcrypt on app2sd file, error:%s, ret:%d",
 144                                 err_str, ret);
 145                 return APP2EXT_ERROR_SETUP_DMCRYPT_DEVICE;
 146         }
 147
 148         return ret;
 149 }
 150
 151 int _app2sd_dmcrypt_open_device(const char *pkgid, const char *loopback_device,
 152                 bool is_dup, uid_t uid, char **dev_node)
 153 {
 154         int ret;
 155         int size;
 156         char *passwd;
 157         char dmcrypt_open_cmd[BUF_SIZE];
 158         char dev_name[BUF_SIZE];
 159         char buf[BUF_SIZE];
 160         const char *err_str;
 161
 162         if (pkgid == NULL || loopback_device == NULL) {
 163                 _E("invalid argument");
 164                 return APP2EXT_ERROR_INVALID_ARGUMENTS;
 165         }
 166
 167         if (is_dup)
 168                 snprintf(dev_name, sizeof(dev_name), "%s.new_%d", pkgid, uid);
 169         else
 170                 snprintf(dev_name, sizeof(dev_name), "%s_%d", pkgid, uid);
 171
 172         /* get password for dmcrypt encryption */
 173         ret = _app2sd_initialize_db();
 174         if (ret) {
 175                 _E("app2sd db initialize failed");
 176                 return APP2EXT_ERROR_DB_INITIALIZE;
 177         }
 178
 179         passwd = _app2sd_get_password_from_db(pkgid, uid);
 180         if (passwd == NULL) {
 181                 _E("no password found for [%s]", pkgid);
 182                 return APP2EXT_ERROR_SQLITE_REGISTRY;
 183         }
 184
 185         if (_app2sd_check_is_luks_device(loopback_device) == 0) {
 186                 _W("legacy image format!");
 187                 ret = snprintf(dmcrypt_open_cmd, sizeof(dmcrypt_open_cmd),
 188                                 "/bin/echo '%s' | /sbin/cryptsetup "
 189                                 "-M plain -c aes-cbc-plain -h plain open %s %s",
 190                                 passwd, loopback_device, dev_name);
 191                 if (ret < 0 || ret > sizeof(dmcrypt_open_cmd)) {
 192                         free(passwd);
 193                         _E("snprintf fail\n");
 194                         return -1;
 195                 }
 196         } else {
 197                 ret = snprintf(dmcrypt_open_cmd, sizeof(dmcrypt_open_cmd),
 198                                 "/bin/echo '%s' | /sbin/cryptsetup -q luksOpen "
 199                                 "%s %s",
 200                                 passwd, loopback_device, dev_name);
 201                 if (ret < 0 || ret > sizeof(dmcrypt_open_cmd)) {
 202                         _E("snprintf fail\n");
 203                         free(passwd);
 204                         return -1;
 205                 }
 206         }
 207         free(passwd);
 208
 209         ret = system(dmcrypt_open_cmd);
 210         if (ret) {
 211                 err_str = strerror_r(errno, buf, sizeof(buf));
 212                 _E("error opening dmcrypt device, error: [%s]", err_str);
 213                 return APP2EXT_ERROR_OPEN_DMCRYPT_DEVICE;
 214         }
 215
 216         size = strlen("/dev/mapper/%s") + strlen(dev_name) + 1;
 217         *dev_node = (char *)malloc(size);
 218         if (*dev_node == NULL) {
 219                 _E("memory alloc failed");
 220                 return APP2EXT_ERROR_OPEN_DMCRYPT_DEVICE;
 221         }
 222         ret = snprintf(*dev_node, size, "/dev/mapper/%s", dev_name);
 223         if (ret < 0 || ret > size) {
 224                         _E("snprintf fail\n");
 225                         free(*dev_node);
 226                         *dev_node = NULL;
 227                         return -1;
 228         }
 229         return 0;
 230 }
 231
 232 int _app2sd_dmcrypt_close_device(const char *pkgid, uid_t uid)
 233 {
 234         int ret;
 235         char dev_node[BUF_SIZE];
 236         char dmcrypt_close_cmd[BUF_SIZE];
 237         char err_buf[BUF_SIZE];
 238         const char *err_str;
 239         char *t_dev_node;
 240
 241         if (pkgid == NULL) {
 242                 _E("invalid argument");
 243                 return APP2EXT_ERROR_INVALID_ARGUMENTS;
 244         }
 245
 246         t_dev_node = _app2sd_find_associated_dmcrypt_device_node(pkgid, uid);
 247         if (!t_dev_node) {
 248                 _W("no associated device node(%s_%d) found", pkgid, uid);
 249                 return APP2EXT_ERROR_DMCRYPT_DEVICE_UNAVAILABLE;
 250         }
 251
 252         free(t_dev_node);
 253
 254         ret = snprintf(dev_node, sizeof(dev_node), "/dev/mapper/%s_%d", pkgid, uid);
 255         if (ret < 0 || ret > sizeof(dev_node)) {
 256                 _E("snprintf fail");
 257                 return APP2EXT_ERROR_CLOSE_DMCRYPT_DEVICE;
 258         }
 259         ret = snprintf(dmcrypt_close_cmd, sizeof(dmcrypt_close_cmd),
 260                         "/sbin/cryptsetup -q luksClose %s", dev_node);
 261         if (ret < 0 || ret > sizeof(dmcrypt_close_cmd)) {
 262                 _E("snprintf fail");
 263                 return APP2EXT_ERROR_CLOSE_DMCRYPT_DEVICE;
 264         }
 265         ret = system(dmcrypt_close_cmd);
 266         if (ret) {
 267                 err_str = strerror_r(errno, err_buf, sizeof(err_buf));
 268                 _E("error closing dmcrypt on app2sd file: %s", err_str);
 269                 return APP2EXT_ERROR_CLOSE_DMCRYPT_DEVICE;
 270         }
 271
 272         return ret;
 273 }
 274
 275 char *_app2sd_find_associated_dmcrypt_device_node(const char *pkgid, uid_t uid)
 276 {
 277         char *dev_node;
 278         char buf[BUF_SIZE];
 279
 280         snprintf(buf, sizeof(buf), "/dev/mapper/%s_%d", pkgid, uid);
 281         if (access(buf, F_OK) == 0) {
 282                 dev_node = strdup(buf);
 283                 if (dev_node == NULL) {
 284                         _E("memory alloc failed");
 285                         return NULL;
 286                 }
 287                 _D("device_node: (%s)", dev_node);
 288                 return dev_node;
 289         }
 290         _D("can not access dev_node(%s), errno(%d)", buf, errno);
 291
 292         return NULL;
 293 }
 294
 295 char *_app2sd_dmcrypt_duplicate_encryption_setup(const char *pkgid,
 296                 const char *temp_loopback_device, uid_t uid)
 297 {
 298         int ret;
 299         char *device_node;
 300
 301         if (pkgid == NULL || temp_loopback_device == NULL) {
 302                 _E("invalid argument");
 303                 return NULL;
 304         }
 305
 306         ret = _app2sd_dmcrypt_setup_device(pkgid, temp_loopback_device, true,
 307                         uid);
 308         if (ret) {
 309                 _E("dmcrypt setup device error(%d)", ret);
 310                 return NULL;
 311         }
 312
 313         ret = _app2sd_dmcrypt_open_device(pkgid, temp_loopback_device, true,
 314                         uid, &device_node);
 315         if (ret) {
 316                 _E("dmcrypt open device error");
 317                 return NULL;
 318         }
 319
 320         return device_node;
 321 }
 322
 323 int _app2sd_create_loopback_device(const char *pkgid,
 324                 const char *loopback_device, int size)
 325 {
 326         int ret;
 327         char command[FILENAME_MAX];
 328         char buff[BUF_SIZE];
 329         FILE *fp;
 330         const char *argv[] = { "/bin/dd", "if=/dev/zero", command,
 331                 "bs=1M", buff, NULL };
 332
 333         if (pkgid == NULL || size <= 0) {
 334                 _E("invalid argument");
 335                 return APP2EXT_ERROR_INVALID_ARGUMENTS;
 336         }
 337
 338         fp = fopen(loopback_device, "r+");
 339         if (fp != NULL) {
 340                 _W("encrypted file already exists (%s)", loopback_device);
 341                 fclose(fp);
 342                 return APP2EXT_ERROR_PKG_EXISTS;
 343         }
 344
 345         snprintf(command, sizeof(command), "of=%s", loopback_device);
 346         snprintf(buff, sizeof(buff), "count=%d", size);
 347
 348         ret = _xsystem(argv);
 349         if (ret)
 350                 _E("command (%s) failed, ret(%d), errno(%d)",
 351                                 command, ret, errno);
 352
 353         return ret;
 354 }
 355
 356 int _app2sd_delete_loopback_device(const char *loopback_device)
 357 {
 358         int ret;
 359
 360         ret = unlink(loopback_device);
 361         if (ret) {
 362                 if (errno == ENOENT) {
 363                         _W("unable to access file (%s)", loopback_device);
 364                 } else {
 365                         _E("unable to delete (%s)", loopback_device);
 366                         return APP2EXT_ERROR_DELETE_LOOPBACK_DEVICE;
 367                 }
 368         }
 369
 370         return APP2EXT_SUCCESS;
 371 }
 372
 373 int _app2sd_create_file_system(const char *device_path)
 374 {
 375         int ret;
 376         FILE *fp;
 377         char err_buf[1024];
 378         const char *err_str;
 379         const char *argv[] = { "/sbin/mkfs.ext4", device_path, NULL };
 380
 381         if (device_path == NULL) {
 382                 _E("invalid param");
 383                 return APP2EXT_ERROR_INVALID_ARGUMENTS;
 384         }
 385
 386         /* Format the filesystem [create a filesystem]*/
 387         fp = fopen(device_path, "r+");
 388         if (fp == NULL) {
 389                 err_str = strerror_r(errno, err_buf, sizeof(err_buf));
 390                 _E("unable to access (%s) error is (%d, %s)",
 391                                 device_path, errno, err_str);
 392                 return APP2EXT_ERROR_ACCESS_FILE;
 393         }
 394         fclose(fp);
 395
 396         ret = _xsystem(argv);
 397         if (ret) {
 398                 err_str = strerror_r(errno, err_buf, sizeof(err_buf));
 399                 _E("creating file system failed, error is (%s)", err_str);
 400                 return APP2EXT_ERROR_CREATE_FS;
 401         }
 402         return ret;
 403 }
 404
 405 static int _app2sd_create_dir_with_link(const char *application_path,
 406                 const char *pkgid, const char *dir_name, uid_t uid)
 407 {
 408         int ret;
 409         char app_dir_mmc_path[FILENAME_MAX];
 410         char app_dir_path[FILENAME_MAX];
 411
 412         snprintf(app_dir_mmc_path, sizeof(app_dir_mmc_path), "%s/.mmc/%s",
 413                         application_path, dir_name);
 414         snprintf(app_dir_path, sizeof(app_dir_path), "%s/%s",
 415                         application_path, dir_name);
 416
 417         ret = _app2sd_make_directory(app_dir_mmc_path, uid);
 418         if (ret) {
 419                 _E("create directory failed");
 420                 return APP2EXT_ERROR_CREATE_DIRECTORY;
 421         }
 422
 423         ret = symlink(app_dir_mmc_path, app_dir_path);
 424         if (ret < 0) {
 425                 if (errno == EEXIST) {
 426                         _D("file with symlink name present (%s)", app_dir_path);
 427                 } else {
 428                         _E("symbolic link creation failed, error: %d", errno);
 429                         return APP2EXT_ERROR_CREATE_SYMLINK;
 430                 }
 431         }
 432
 433         return APP2EXT_SUCCESS;
 434 }
 435
 436 static int _app2sd_create_directory_entry(const char *application_path,
 437                 const char *pkgid, GList *dir_list, uid_t uid)
 438 {
 439         int ret;
 440         GList *list;
 441         app2ext_dir_details *dir_detail;
 442
 443         for (list = g_list_first(dir_list); list; list = g_list_next(list)) {
 444                 dir_detail = (app2ext_dir_details *)list->data;
 445                 if (dir_detail == NULL || dir_detail->name == NULL ||
 446                                 dir_detail->type != APP2EXT_DIR_RO)
 447                         continue;
 448                 ret = _app2sd_create_dir_with_link(application_path,
 449                                 pkgid, dir_detail->name, uid);
 450                 if (ret)
 451                         return ret;
 452         }
 453         return APP2EXT_SUCCESS;
 454 }
 455
 456 int _app2sd_mount_app_content(const char *application_path, const char *pkgid,
 457                 const char *dev, int mount_type, GList *dir_list,
 458                 app2sd_cmd cmd, uid_t uid)
 459 {
 460         int ret;
 461         int fd;
 462         char app_mmc_path[FILENAME_MAX];
 463         char temp_path[FILENAME_MAX];
 464         char err_buf[1024];
 465         const char *err_str;
 466         struct timespec time = {
 467                 .tv_sec = 0,
 468                 .tv_nsec = 1000 * 1000 * 200
 469         };
 470         char mountflags_str[BUF_SIZE];
 471         const char *argv_mount[] = { "/bin/app2sd-mount-helper", dev,
 472                 app_mmc_path, FS_TYPE, mountflags_str, NULL };
 473
 474         if (dev == NULL) {
 475                 _E("input param is NULL (%s)", dev);
 476                 return APP2EXT_ERROR_INVALID_ARGUMENTS;
 477         }
 478
 479         /* check directory existence */
 480         fd = open(application_path, O_RDONLY | O_DIRECTORY);
 481         if (fd < 0) {
 482                 _E("path(%s) error(%d)", application_path, errno);
 483                 return APP2EXT_ERROR_OPEN_DIR;
 484         }
 485         close(fd);
 486
 487         ret = snprintf(app_mmc_path, sizeof(app_mmc_path), "%s/.mmc",
 488                         application_path);
 489         if (ret < 0 || ret > sizeof(app_mmc_path)) {
 490                 _E("snprintf fail");
 491                 return APP2EXT_ERROR_OPEN_DIR;
 492         }
 493         fd = open(app_mmc_path, O_RDONLY | O_DIRECTORY);
 494         if (fd < 0) {
 495                 _E("path(%s) error(%d)", app_mmc_path, errno);
 496                 return APP2EXT_ERROR_OPEN_DIR;
 497         }
 498         close(fd);
 499
 500         nanosleep(&time, NULL); /* 200ms sleep */
 501         _D("give a delay for mount");
 502
 503         switch (mount_type) {
 504         case MOUNT_TYPE_RD:
 505                 snprintf(mountflags_str, sizeof(mountflags_str), "%u",
 506                                 MS_MGC_VAL | MS_RDONLY | MS_NOSUID);
 507                 ret = _xsystem(argv_mount);
 508                 if (ret) {
 509                         _E("read only mount failed, errono is (%d), "
 510                                         "dev is (%s) path is (%s)",
 511                                         ret, dev, app_mmc_path);
 512                         ret = APP2EXT_ERROR_MOUNT;
 513                 }
 514                 break;
 515         case MOUNT_TYPE_RW:
 516                 snprintf(mountflags_str, sizeof(mountflags_str), "%u",
 517                                 MS_MGC_VAL | MS_NOSUID);
 518                 ret = _xsystem(argv_mount);
 519                 if (ret) {
 520                         _E("read write mount failed, errno is (%d)", ret);
 521                         ret = APP2EXT_ERROR_MOUNT;
 522                 }
 523                 break;
 524         case MOUNT_TYPE_RW_NOEXEC:
 525                 snprintf(mountflags_str, sizeof(mountflags_str), "%u",
 526                                 MS_MGC_VAL | MS_NOEXEC | MS_NOSUID);
 527                 ret = _xsystem(argv_mount);
 528                 if (ret) {
 529                         _E("rwnx mount failed errno is (%d)", ret);
 530                         ret = APP2EXT_ERROR_MOUNT;
 531                 }
 532                 break;
 533         case MOUNT_TYPE_RD_REMOUNT:
 534                 snprintf(mountflags_str, sizeof(mountflags_str), "%u",
 535                                 MS_MGC_VAL | MS_RDONLY | MS_REMOUNT |
 536                                 MS_NOSUID);
 537                 ret = _xsystem(argv_mount);
 538                 if (ret) {
 539                         _E("read remount failed errno is (%d)", ret);
 540                         ret = APP2EXT_ERROR_MOUNT;
 541                 }
 542                 break;
 543         case MOUNT_TYPE_RW_REMOUNT:
 544                 snprintf(mountflags_str, sizeof(mountflags_str), "%u",
 545                                 MS_MGC_VAL | MS_REMOUNT | MS_NOSUID);
 546                 ret = _xsystem(argv_mount);
 547                 err_str = strerror_r(ret, err_buf, sizeof(err_buf));
 548                 if (ret) {
 549                         _E("read write remount failed errno(%d), errstr(%s)",
 550                                         ret, err_str);
 551                         ret = APP2EXT_ERROR_MOUNT;
 552                 }
 553                 break;
 554         default:
 555                 _E("invalid mount type");
 556                 break;
 557         }
 558
 559         if (cmd == APP2SD_PRE_INSTALL || cmd == APP2SD_MOVE_APP_TO_MMC ||
 560                         cmd == APP2SD_PRE_UPGRADE) {
 561                 ret = _app2sd_create_directory_entry(application_path,
 562                                 pkgid, dir_list, uid);
 563         }
 564
 565         if (mount_type != MOUNT_TYPE_RD &&
 566                         mount_type != MOUNT_TYPE_RD_REMOUNT) {
 567                 /* change lost+found permission */
 568                 ret = snprintf(temp_path, sizeof(temp_path), "%s/lost+found",
 569                                 app_mmc_path);
 570                 if (ret < 0 || ret > sizeof(temp_path)) {
 571                         _E("snprintf fail");
 572                         return APP2EXT_ERROR_CREATE_DIRECTORY;
 573                 }
 574                 ret = _app2sd_make_directory(temp_path, uid);
 575                 if (ret) {
 576                         _E("create directory(%s) failed", temp_path);
 577                         return APP2EXT_ERROR_CREATE_DIRECTORY;
 578                 }
 579         }
 580
 581         return ret;
 582 }
 583
 584 int _app2sd_unmount_app_content(const char *application_path)
 585 {
 586         int ret;
 587         char app_mmc_path[FILENAME_MAX];
 588         char err_buf[1024];
 589         const char *err_str;
 590
 591         snprintf(app_mmc_path, sizeof(app_mmc_path), "%s/.mmc",
 592                         application_path);
 593         ret = umount(app_mmc_path);
 594         if (ret < 0) {
 595                 err_str = strerror_r(errno, err_buf, sizeof(err_buf));
 596                 _D("unable to umount the dir, ret(%d) error(%d, %s)",
 597                                 ret, errno, err_str);
 598         }
 599
 600         return ret;
 601 }
 602
 603 static int _app2sd_move_to_archive(const char *src_path, const char *arch_path)
 604 {
 605         int ret;
 606         char err_buf[1024];
 607         const char *err_str;
 608
 609         ret = _app2sd_copy_dir(src_path, arch_path);
 610         if (ret && ret != APP2EXT_ERROR_ACCESS_FILE) {
 611                 err_str = strerror_r(errno, err_buf, sizeof(err_buf));
 612                 _E("unable to copy from (%s) to (%s), err is (%s)",
 613                                 src_path, arch_path, err_str);
 614                 return APP2EXT_ERROR_MOVE;
 615         }
 616
 617         ret = _app2sd_delete_directory(src_path);
 618         if (ret) {
 619                 _E("unable to delete (%s)", src_path);
 620                 return APP2EXT_ERROR_DELETE_DIRECTORY;
 621         }
 622
 623         return ret;
 624 }
 625
 626 static int _app2sd_move_app_to_external(const char *pkgid, GList *dir_list,
 627                 uid_t uid, char *mmc_path, char **image_path)
 628 {
 629         int ret;
 630         mode_t mode = DIR_PERMS;
 631         char temp_dir_path[FILENAME_MAX];
 632         char app_mmc_path[FILENAME_MAX];
 633         char app_archive_path[FILENAME_MAX];
 634         char application_path[FILENAME_MAX];
 635         char loopback_device[FILENAME_MAX];
 636         unsigned long long total_size = 0;
 637         int reqd_size;
 638         int reqd_disk_size;
 639         char *device_node;
 640         int free_mmc_mem;
 641         FILE *fp;
 642         GList *list;
 643         app2ext_dir_details *dir_detail;
 644         char err_buf[1024];
 645         const char *err_str;
 646
 647         ret = _app2sd_get_loopback_device_path(mmc_path, pkgid, uid,
 648                         loopback_device, sizeof(loopback_device));
 649         if (ret)
 650                 return ret;
 651
 652         _app2sd_set_application_path(pkgid, uid, application_path,
 653                         sizeof(application_path));
 654
 655         /* check whether application is in external memory or not */
 656         fp = fopen(loopback_device, "r+");
 657         if (fp != NULL) {
 658                 _W("Already %s entry is present in the SD Card, "
 659                                 "delete entry and go on without return", pkgid);
 660                 fclose(fp);
 661                 _app2sd_force_clean(pkgid, application_path, loopback_device,
 662                                 uid);
 663         }
 664
 665         ret = snprintf(app_mmc_path, sizeof(app_mmc_path), "%s/.mmc",
 666                         application_path);
 667         if (ret < 0 || ret > sizeof(app_mmc_path)) {
 668                 _E("snprintf fail");
 669                 return APP2EXT_ERROR_CREATE_DIRECTORY;
 670         }
 671         ret = snprintf(app_archive_path, sizeof(app_archive_path), "%s/.archive",
 672                         application_path);
 673         if (ret < 0 || ret > sizeof(app_archive_path)) {
 674                 _E("snprintf fail");
 675                 return APP2EXT_ERROR_CREATE_DIRECTORY;
 676         }
 677
 678         ret = mkdir(app_mmc_path, mode);
 679         if (ret) {
 680                 if (errno != EEXIST) {
 681                         _E("unable to create directory for archiving,"
 682                                         " error(%d)", errno);
 683                         return APP2EXT_ERROR_CREATE_DIRECTORY;
 684                 }
 685         }
 686
 687         ret = mkdir(app_archive_path, mode);
 688         if (ret) {
 689                 if (errno != EEXIST) {
 690                         _E("unable to create directory for archiving,"
 691                                         " error(%d)", errno);
 692                         return APP2EXT_ERROR_CREATE_DIRECTORY;
 693                 }
 694         }
 695
 696         for (list = g_list_first(dir_list); list; list = g_list_next(list)) {
 697                 dir_detail = (app2ext_dir_details *)list->data;
 698                 if (dir_detail == NULL || dir_detail->name == NULL ||
 699                                 dir_detail->type != APP2EXT_DIR_RO)
 700                         continue;
 701                 ret = snprintf(temp_dir_path, sizeof(temp_dir_path), "%s/%s",
 702                                 application_path, dir_detail->name);
 703                 if (ret < 0 || ret > sizeof(temp_dir_path)) {
 704                         _E("snprintf fail");
 705                         return APP2EXT_ERROR_MMC_STATUS;
 706                 }
 707                 _D("cal size of app dirs, temp_dir_path(%s)", temp_dir_path);
 708                 total_size += _app2sd_calculate_dir_size(temp_dir_path);
 709         }
 710
 711         reqd_size = ((total_size) / (1024 * 1024)) + 2;
 712         reqd_disk_size = reqd_size + ceil(reqd_size * 0.2);
 713
 714         /* find avialable free memory in the MMC card */
 715         ret = _app2sd_get_available_free_memory(mmc_path, &free_mmc_mem);
 716         if (ret) {
 717                 _E("unable to get available free memory in MMC (%d)", ret);
 718                 return APP2EXT_ERROR_MMC_STATUS;
 719         }
 720         /* if avaialalbe free memory in MMC is less than
 721          * required size + 5MB, return error
 722          */
 723         if (reqd_disk_size > free_mmc_mem) {
 724                 _E("insufficient memory in MMC for "
 725                                 "application installation (%d)", ret);
 726                 return APP2EXT_ERROR_MMC_INSUFFICIENT_MEMORY;
 727         }
 728         /* create a loopback device */
 729         ret = _app2sd_create_loopback_device(pkgid, loopback_device,
 730                         (reqd_disk_size + PKG_BUF_SIZE));
 731         if (ret) {
 732                 _E("loopback node creation failed");
 733                 return ret;
 734         }
 735
 736         ret = _app2sd_dmcrypt_setup_device(pkgid, loopback_device, false, uid);
 737         if (ret) {
 738                 _E("dmcrypt setup device error(%d)", ret);
 739                 return APP2EXT_ERROR_SETUP_DMCRYPT_DEVICE;
 740         }
 741
 742         ret = _app2sd_dmcrypt_open_device(pkgid, loopback_device, false,
 743                         uid, &device_node);
 744         if (ret) {
 745                 _E("dmcrypt open device error");
 746                 return APP2EXT_ERROR_OPEN_DMCRYPT_DEVICE;
 747         }
 748         /* format the loopback file system */
 749         ret = _app2sd_create_file_system(device_node);
 750         if (ret) {
 751                 _E("create ext4 filesystem failed");
 752                 ret = APP2EXT_ERROR_CREATE_FS;
 753                 goto ERR;
 754         }
 755
 756         for (list = g_list_first(dir_list); list; list = g_list_next(list)) {
 757                 dir_detail = (app2ext_dir_details *)list->data;
 758                 if (dir_detail == NULL || dir_detail->name == NULL ||
 759                                 dir_detail->type != APP2EXT_DIR_RO)
 760                         continue;
 761                 ret = snprintf(temp_dir_path, sizeof(temp_dir_path), "%s/%s",
 762                                 application_path, dir_detail->name);
 763                 if (ret < 0 || ret > sizeof(temp_dir_path)) {
 764                         _E("snprintf fail");
 765                         ret = APP2EXT_ERROR_MOVE;
 766                         goto ERR;
 767                 }
 768                 _D("app2archive, temp_dir_path(%s)", temp_dir_path);
 769                 ret = _app2sd_move_to_archive(temp_dir_path, app_archive_path);
 770                 if (ret) {
 771                         _E("unable to copy from (%s) to (%s)",
 772                                         temp_dir_path, app_archive_path);
 773                         goto ERR;
 774                 }
 775         }
 776
 777         /* mount the loopback encrypted pseudo device on
 778          * application installation path as with Read Write permission
 779          */
 780         ret = _app2sd_mount_app_content(application_path, pkgid, device_node,
 781                         MOUNT_TYPE_RW, dir_list, APP2SD_MOVE_APP_TO_MMC, uid);
 782         if (ret) {
 783                 _E("mount failed");
 784                 goto ERR;
 785         }
 786
 787         for (list = g_list_first(dir_list); list; list = g_list_next(list)) {
 788                 dir_detail = (app2ext_dir_details *)list->data;
 789                 if (dir_detail == NULL || dir_detail->name == NULL ||
 790                                 dir_detail->type != APP2EXT_DIR_RO)
 791                         continue;
 792                 ret = snprintf(temp_dir_path, sizeof(temp_dir_path), "%s/%s",
 793                                 app_archive_path, dir_detail->name);
 794                 if (ret < 0 || ret > sizeof(temp_dir_path)) {
 795                         _E("snprintf fail");
 796                         ret = APP2EXT_ERROR_COPY_DIRECTORY;
 797                         goto ERR;
 798                 }
 799                 _D("archive2mmc, temp_dir_path(%s)", temp_dir_path);
 800                 ret = _app2sd_copy_dir(temp_dir_path, app_mmc_path);
 801                 if (ret) {
 802                         if (ret == APP2EXT_ERROR_ACCESS_FILE) {
 803                                 _E("unable to access (%s)", temp_dir_path);
 804                         } else {
 805                                 err_str = strerror_r(errno, err_buf,
 806                                                 sizeof(err_buf));
 807                                 _E("unable to copy from (%s) to (%s),"
 808                                                 " error is (%s)", temp_dir_path,
 809                                                 app_mmc_path, err_str);
 810                         }
 811                         goto ERR;
 812                 }
 813                 ret = _app2sd_delete_directory(temp_dir_path);
 814                 if (ret) {
 815                         _E("unable to delete (%s)", temp_dir_path);
 816                         goto ERR;
 817                 }
 818         }
 819
 820         ret = _app2sd_delete_directory(app_archive_path);
 821         if (ret) {
 822                 _E("unable to delete (%s)", app_archive_path);
 823                 ret = APP2EXT_ERROR_DELETE_DIRECTORY;
 824                 goto ERR;
 825         }
 826
 827         *image_path = strdup(loopback_device);
 828         return APP2EXT_SUCCESS;
 829
 830 ERR:
 831         if (device_node)
 832                 free(device_node);
 833
 834         *image_path = NULL;
 835         return ret;
 836 }
 837
 838 static int _app2sd_move_app_to_internal(const char *pkgid, GList *dir_list,
 839                 uid_t uid, char *mmc_path)
 840 {
 841         int ret;
 842         mode_t mode = DIR_PERMS;
 843         char temp_dir_path[FILENAME_MAX];
 844         char app_mmc_path[FILENAME_MAX];
 845         char app_archive_path[FILENAME_MAX];
 846         char application_path[FILENAME_MAX];
 847         char loopback_device[FILENAME_MAX];
 848         char *device_node;
 849         FILE *fp;
 850         GList *list;
 851         app2ext_dir_details *dir_detail;
 852         int reqd_size;
 853         int free_internal_mem;
 854         unsigned long long temp = 0;
 855         char err_buf[1024];
 856         const char *err_str;
 857         int mount_type;
 858
 859         ret = _app2sd_get_loopback_device_path(mmc_path, pkgid, uid,
 860                         loopback_device, sizeof(loopback_device));
 861         if (ret)
 862                 return ret;
 863
 864         _app2sd_set_application_path(pkgid, uid, application_path,
 865                 sizeof(application_path));
 866
 867         /* check whether application is in external memory or not */
 868         fp = fopen(loopback_device, "r+");
 869         if (fp == NULL) {
 870                 _E("application (%s) is not installed on SD Card",
 871                      pkgid);
 872                 return APP2EXT_ERROR_FILE_ABSENT;
 873         }
 874         fclose(fp);
 875
 876         /* find avialable free memory in the internal storage */
 877         ret = _app2sd_get_available_free_memory(INTERNAL_STORAGE_PATH,
 878                         &free_internal_mem);
 879         if (ret) {
 880                 _E("unable to get available free memory in internal (%d)", ret);
 881                 return APP2EXT_ERROR_MMC_STATUS;
 882         }
 883
 884         fp = fopen(loopback_device, "r+");
 885         if (fp == NULL) {
 886                 _E("app entry is not present in SD card");
 887                 return APP2EXT_ERROR_INVALID_PACKAGE;
 888         }
 889         fclose(fp);
 890
 891         /* get installed app size*/
 892         temp = _app2sd_calculate_file_size(loopback_device);
 893         reqd_size = (int)((temp) / (1024 * 1024));
 894         _D("reqd size is (%d)", reqd_size);
 895
 896         if (reqd_size == 0) {
 897                 _E("app entry is not present in SD Card");
 898                 return APP2EXT_ERROR_LOOPBACK_DEVICE_UNAVAILABLE;
 899         }
 900
 901         _I("reqd size: (%d)MB, free internal mem: (%d)MB",
 902                         reqd_size, free_internal_mem);
 903
 904         /* if avaialalbe free memory in internal storage is
 905          * less than required size, return error
 906          */
 907         if (reqd_size > free_internal_mem) {
 908                 _E("innsufficient memory in internal storage"
 909                         " for application installation (%d)", ret);
 910                 return APP2EXT_ERROR_MMC_INSUFFICIENT_MEMORY;
 911         }
 912
 913         device_node =
 914                 _app2sd_find_associated_dmcrypt_device_node(pkgid, uid);
 915         if (device_node == NULL) {
 916                 /* do loopback setup */
 917                 ret = _app2sd_dmcrypt_open_device(pkgid, loopback_device,
 918                                 false, uid, &device_node);
 919                 if (ret) {
 920                         _E("dmcrypt open device error(%d)", ret);
 921                         return APP2EXT_ERROR_OPEN_DMCRYPT_DEVICE;
 922                 }
 923                 mount_type = MOUNT_TYPE_RW;
 924         } else {
 925                 mount_type = MOUNT_TYPE_RW_REMOUNT;
 926         }
 927         /* do mounting */
 928         ret = _app2sd_mount_app_content(application_path,
 929                         pkgid, device_node, mount_type,
 930                         dir_list, APP2SD_MOVE_APP_TO_PHONE, uid);
 931         if (ret) {
 932                 _E("mount failed");
 933                 ret = APP2EXT_ERROR_MOUNT_PATH;
 934                 goto ERR;
 935         }
 936
 937         ret = snprintf(app_mmc_path, sizeof(app_mmc_path), "%s/.mmc",
 938                         application_path);
 939         if (ret < 0 || ret > sizeof(app_mmc_path)) {
 940                 _E("snprintf fail");
 941                 ret = -1;
 942                 goto ERR;
 943         }
 944         ret = snprintf(app_archive_path, sizeof(app_archive_path), "%s/.archive",
 945                         application_path);
 946         if (ret < 0 || ret > sizeof(app_archive_path)) {
 947                 _E("snprintf fail");
 948                 ret = -1;
 949                 goto ERR;
 950         }
 951
 952         ret = mkdir(app_archive_path, mode);
 953         if (ret) {
 954                 if (errno != EEXIST) {
 955                         _E("unable to create directory for archiving,"
 956                                         " error(%d)", errno);
 957                         ret = APP2EXT_ERROR_CREATE_DIRECTORY;
 958                         goto ERR;
 959                 }
 960         }
 961
 962         for (list = g_list_first(dir_list); list; list = g_list_next(list)) {
 963                 dir_detail = (app2ext_dir_details *)list->data;
 964                 if (dir_detail == NULL || dir_detail->name == NULL ||
 965                                 dir_detail->type != APP2EXT_DIR_RO)
 966                         continue;
 967                 /* archiving code */
 968                 ret = snprintf(temp_dir_path, sizeof(temp_dir_path), "%s/%s",
 969                                 app_mmc_path, dir_detail->name);
 970                 if (ret < 0 || ret > sizeof(temp_dir_path)) {
 971                         _E("snprintf fail");
 972                         ret = -1;
 973                         goto ERR;
 974                 }
 975                 _D("mmc2archive, temp_dir_path(%s)", temp_dir_path);
 976                 ret = _app2sd_copy_dir(temp_dir_path, app_archive_path);
 977                 if (ret) {
 978                         if (ret == APP2EXT_ERROR_ACCESS_FILE) {
 979                                 _E("unable to access (%s)", temp_dir_path);
 980                         } else {
 981                                 err_str = strerror_r(errno, err_buf,
 982                                                 sizeof(err_buf));
 983                                 _E("unable to copy from (%s) to (%s),"
 984                                                 "error is (%s)", temp_dir_path,
 985                                                 app_archive_path, err_str);
 986                         }
 987                         goto ERR;
 988                 }
 989                 /* delete the symbolic link files [bin, lib, res]*/
 990                 ret = snprintf(temp_dir_path, sizeof(temp_dir_path), "%s/%s",
 991                                 application_path, dir_detail->name);
 992                 if (ret < 0 || ret > sizeof(temp_dir_path)) {
 993                         _E("snprintf fail");
 994                         ret = -1;
 995                         goto ERR;
 996                 }
 997                 _D("unlink, temp_dir_path(%s)", temp_dir_path);
 998                 ret = unlink(temp_dir_path);
 999                 if (ret) {
1000                         if (errno == ENOENT) {
1001                                 _W("(%s) does not exist", temp_dir_path);
1002                         } else {
1003                                 _E("unable to remove the symbolic link file "
1004                                                 "(%s), it is already unlinked",
1005                                                 temp_dir_path);
1006                                 goto ERR;
1007                         }
1008                 }
1009                 /* Copy content to destination */
1010                 ret = snprintf(temp_dir_path, sizeof(temp_dir_path), "%s/%s",
1011                                 app_archive_path, dir_detail->name);
1012                 if (ret < 0 || ret > sizeof(temp_dir_path)) {
1013                         _E("snprintf fail");
1014                         ret = -1;
1015                         goto ERR;
1016                 }
1017                 _D("archive2app, temp_dir_path(%s)", temp_dir_path);
1018                 ret = _app2sd_copy_dir(temp_dir_path, application_path);
1019                 if (ret) {
1020                         if (ret == APP2EXT_ERROR_ACCESS_FILE) {
1021                                 _E("unable to access (%s)", temp_dir_path);
1022                         } else {
1023                                 err_str = strerror_r(errno, err_buf,
1024                                                 sizeof(err_buf));
1025                                 _E("unable to copy from (%s) to (%s), "
1026                                                 "error is (%s)", temp_dir_path,
1027                                                 application_path, err_str);
1028                         }
1029                         goto ERR;
1030                 }
1031         }
1032
1033         _D("copying file completed");
1034         ret = _app2sd_unmount_app_content(application_path);
1035         if (ret)
1036                 _E("unable to unmount SD directory for app (%s)", pkgid);
1037
1038         ret = _app2sd_dmcrypt_close_device(pkgid, uid);
1039         if (ret)
1040                 _E("close dmcrypt device error(%d)", ret);
1041
1042         ret = _app2sd_delete_loopback_device(loopback_device);
1043         if (ret)
1044                 _E("unable to delete the loopback device for (%s)", pkgid);
1045
1046         ret = _app2sd_delete_directory(app_mmc_path);
1047         if (ret)
1048                 _E("unable to delete (%s)", app_mmc_path);
1049
1050         ret = _app2sd_delete_directory(app_archive_path);
1051         if (ret)
1052                 _E("unable to delete (%s)", app_archive_path);
1053
1054         /* remove passwrd from DB */
1055         ret = _app2sd_initialize_db();
1056         if (ret)
1057                 _E("app2sd db initialize failed");
1058
1059         ret = _app2sd_remove_info_from_db(pkgid, uid);
1060         if (ret)
1061                 _E("cannot remove info from db");
1062
1063         return APP2EXT_SUCCESS;
1064
1065 ERR:
1066         if (device_node)
1067                 free(device_node);
1068
1069         return ret;
1070 }
1071
1072 int _app2sd_usr_move_app(const char *pkgid, app2ext_move_type move_type,
1073                 GList *dir_list, uid_t uid, char *mmc_path, char **image_path)
1074 {
1075         int ret;
1076
1077         switch (move_type) {
1078         case APP2EXT_MOVE_TO_EXT:
1079                 ret = _app2sd_move_app_to_external(pkgid, dir_list,
1080                                 uid, mmc_path, image_path);
1081                 if (ret) {
1082                         _E("move app to external memory failed(%d)", ret);
1083                         return ret;
1084                 }
1085                 break;
1086         case APP2EXT_MOVE_TO_PHONE:
1087                 ret = _app2sd_move_app_to_internal(pkgid, dir_list,
1088                                 uid, mmc_path);
1089                 if (ret) {
1090                         _E("move app to internal memory failed(%d)", ret);
1091                         return ret;
1092                 }
1093                 break;
1094         default:
1095                 _E("invalid argument");
1096                 return APP2EXT_ERROR_INVALID_ARGUMENTS;
1097         }
1098
1099         return ret;
1100 }
1101
1102 int _app2sd_copy_ro_content(const char *src, const char *dest, GList *dir_list)
1103 {
1104         char path[FILENAME_MAX];
1105         int ret;
1106         GList *list;
1107         app2ext_dir_details *dir_detail;
1108
1109         for (list = g_list_first(dir_list); list; list = g_list_next(list)) {
1110                 dir_detail = (app2ext_dir_details *)list->data;
1111                 if (dir_detail == NULL || dir_detail->name == NULL ||
1112                                 dir_detail->type != APP2EXT_DIR_RO)
1113                         continue;
1114
1115                 snprintf(path, sizeof(path), "%s/%s", src, dir_detail->name);
1116                 ret = _app2sd_copy_dir(path, dest);
1117                 if (ret) {
1118                         if (ret == APP2EXT_ERROR_ACCESS_FILE) {
1119                                 _E("unable to access (%s)", path);
1120                         } else {
1121                                 _E("unable to copy from (%s) "
1122                                                 "to (%s), errno is (%d)",
1123                                                 path, dest, errno);
1124                                 return APP2EXT_ERROR_MOVE;
1125                         }
1126                 }
1127         }
1128
1129         return APP2EXT_SUCCESS;
1130 }
1131
1132 int _app2sd_duplicate_device(const char *pkgid, const char *loopback_device,
1133                 const char *temp_pkgid, const char *temp_application_path,
1134                 const char *temp_loopback_device, GList *dir_list,
1135                 char *dev_node, int size, uid_t uid)
1136 {
1137         int ret;
1138         int err_res;
1139
1140         /* create a new loopback device */
1141         ret = _app2sd_create_loopback_device(temp_pkgid,
1142                         temp_loopback_device, (size + PKG_BUF_SIZE));
1143         if (ret) {
1144                 _E("package already present");
1145                 return ret;
1146         }
1147
1148         /* perform loopback encryption setup */
1149         dev_node = _app2sd_dmcrypt_duplicate_encryption_setup(pkgid,
1150                         temp_loopback_device, uid);
1151         if (!dev_node) {
1152                 _E("dmcrypt duplicate encryption setup failed");
1153                 _app2sd_delete_loopback_device(temp_loopback_device);
1154                 return APP2EXT_ERROR_SETUP_DMCRYPT_DEVICE;
1155         }
1156
1157         /* format the loopback file system */
1158         ret = _app2sd_create_file_system(dev_node);
1159         if (ret) {
1160                 _E("creating fs failed");
1161                 err_res = APP2EXT_ERROR_CREATE_FS;
1162                 goto FINISH_OFF;
1163         }
1164         _D("create filesystem SUCCESS");
1165
1166         /* do mounting for new dev*/
1167         ret = _app2sd_mount_app_content(temp_application_path, pkgid,
1168                         dev_node, MOUNT_TYPE_RW, dir_list,
1169                         APP2SD_PRE_UPGRADE, uid);
1170         if (ret) {
1171                 _E("remount failed");
1172                 err_res = APP2EXT_ERROR_MOUNT_PATH;
1173                 goto FINISH_OFF;
1174         }
1175
1176         return APP2EXT_SUCCESS;
1177
1178 FINISH_OFF:
1179         if (dev_node) {
1180                 ret = _app2sd_dmcrypt_close_device(temp_pkgid, uid);
1181                 if (ret)
1182                         _E("close dmcrypt device error(%d)", ret);
1183                 _app2sd_delete_loopback_device(temp_loopback_device);
1184                 free(dev_node);
1185         }
1186
1187         return err_res;
1188 }
1189
1190 int _app2sd_update_loopback_device_size(const char *pkgid,
1191                 const char *loopback_device, const char *application_path,
1192                 const char *temp_pkgid, const char *temp_loopback_device,
1193                 const char *temp_application_path, int size, GList *dir_list,
1194                 uid_t uid)
1195 {
1196         int ret;
1197         char *old_device_node;
1198         int err_res;
1199         char app_mmc_path[FILENAME_MAX];
1200         char temp_app_mmc_path[FILENAME_MAX];
1201         int mount_type;
1202
1203         ret = _app2sd_duplicate_device(pkgid, loopback_device, temp_pkgid,
1204                         temp_application_path, temp_loopback_device,
1205                         dir_list, NULL, size, uid);
1206         if (ret) {
1207                 _E("creating duplicate device failed");
1208                 return ret;
1209         }
1210
1211         /* get the associated device node for SD card applicatione */
1212         old_device_node =
1213                 _app2sd_find_associated_dmcrypt_device_node(pkgid, uid);
1214         if (old_device_node == NULL) {
1215                 /* do loopback setup */
1216                 ret = _app2sd_dmcrypt_open_device(pkgid, loopback_device,
1217                         false, uid, &old_device_node);
1218                 if (ret) {
1219                         _E("dmcrypt open device error");
1220                         err_res = APP2EXT_ERROR_OPEN_DMCRYPT_DEVICE;
1221                         goto FINISH_OFF;
1222                 }
1223                 mount_type = MOUNT_TYPE_RW;
1224         } else {
1225                 mount_type = MOUNT_TYPE_RW_REMOUNT;
1226         }
1227
1228         /* do mounting */
1229         ret = _app2sd_mount_app_content(application_path, pkgid,
1230                         old_device_node, mount_type, dir_list,
1231                         APP2SD_PRE_UPGRADE, uid);
1232         if (ret) {
1233                 _E("remount failed");
1234                 err_res = APP2EXT_ERROR_MOUNT_PATH;
1235         }
1236         free(old_device_node);
1237
1238         snprintf(app_mmc_path, sizeof(app_mmc_path),
1239                         "%s/.mmc", application_path);
1240         snprintf(temp_app_mmc_path, sizeof(temp_app_mmc_path),
1241                         "%s/.mmc", temp_application_path);
1242
1243         ret = _app2sd_copy_ro_content(app_mmc_path,
1244                         temp_app_mmc_path, dir_list);
1245         if (ret) {
1246                 _E("copy ro content failed");
1247                 err_res = ret;
1248         }
1249
1250         ret = _app2sd_unmount_app_content(application_path);
1251         if (ret) {
1252                 _E("unable to unmount the SD application");
1253                 err_res = APP2EXT_ERROR_UNMOUNT;
1254         }
1255
1256         ret = _app2sd_unmount_app_content(temp_application_path);
1257         if (ret) {
1258                 _E("unable to unmount the SD application");
1259                 err_res = APP2EXT_ERROR_UNMOUNT;
1260                 goto FINISH_OFF;
1261         }
1262
1263         ret = _app2sd_dmcrypt_close_device(pkgid, uid);
1264         if (ret) {
1265                 _E("close dmcrypt device error(%d)", ret);
1266                 err_res = APP2EXT_ERROR_CLOSE_DMCRYPT_DEVICE;
1267                 goto FINISH_OFF;
1268         }
1269
1270         ret = _app2sd_dmcrypt_close_device(temp_pkgid, uid);
1271         if (ret) {
1272                 _E("close dmcrypt device error(%d)", ret);
1273                 err_res = APP2EXT_ERROR_CLOSE_DMCRYPT_DEVICE;
1274                 goto FINISH_OFF;
1275         }
1276
1277         ret = _app2sd_delete_directory(loopback_device);
1278         if (ret) {
1279                 _E("unable to delete (%s)", loopback_device);
1280                 err_res = APP2EXT_ERROR_DELETE_DIRECTORY;
1281                 goto FINISH_OFF;
1282         }
1283
1284         ret = _app2sd_rename_dir(temp_loopback_device, loopback_device);
1285         if (ret) {
1286                 _E("unable to rename (%s)", temp_loopback_device);
1287                 err_res = APP2EXT_ERROR_MOVE;
1288                 goto FINISH_OFF;
1289         }
1290
1291         ret = _app2sd_delete_directory(temp_application_path);
1292         if (ret) {
1293                 _E("unable to delete (%s)", temp_application_path);
1294                 err_res = APP2EXT_ERROR_DELETE_DIRECTORY;
1295                 goto FINISH_OFF;
1296         }
1297
1298         return APP2EXT_SUCCESS;
1299
1300 FINISH_OFF:
1301         ret = _app2sd_dmcrypt_close_device(pkgid, uid);
1302         if (ret)
1303                 _E("close dmcrypt device error(%d)", ret);
1304
1305         ret = _app2sd_dmcrypt_close_device(temp_pkgid, uid);
1306         if (ret)
1307                 _E("close dmcrypt device error(%d)", ret);
1308
1309         _app2sd_delete_loopback_device(temp_loopback_device);
1310
1311         ret = _app2sd_delete_directory(temp_application_path);
1312         if (ret)
1313                 _E("unable to delete (%s)", temp_application_path);
1314
1315         return err_res;
1316 }
1317
1318 int _app2sd_force_clean(const char *pkgid, const char *application_path,
1319                 const char *loopback_device, uid_t uid)
1320 {
1321         int ret;
1322
1323         /* unmount the loopback encrypted pseudo device from
1324          * the application installation path
1325          */
1326         ret = _app2sd_unmount_app_content(application_path);
1327         if (ret)
1328                 _W("unable to unmount the app content (%d)", ret);
1329
1330         /* detach the loopback encryption setup for the application */
1331         ret = _app2sd_dmcrypt_close_device(pkgid, uid);
1332         if (ret)
1333                 _W("close dmcrypt device error (%d)", ret);
1334
1335         /* delete the loopback device from the SD card */
1336         ret = _app2sd_delete_loopback_device(loopback_device);
1337         if (ret)
1338                 _W("unable to detach the loopback encryption setup for "
1339                                 "the application");
1340
1341         /* delete symlink */
1342         _app2sd_delete_symlink(application_path);
1343
1344         /* remove passwrd from DB */
1345         ret = _app2sd_initialize_db();
1346         if (ret)
1347                 _W("app2sd db initialize failed");
1348
1349         ret = _app2sd_remove_info_from_db(pkgid, uid);
1350         if (ret)
1351                 _W("cannot remove info from db");
1352
1353         return ret;
1354 }