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 #include <dirent.h>
  25 #include <time.h>
  26 #include <pwd.h>
  27
  28 #include "app2sd_internals.h"
  29
  30 #ifdef TIZEN_FEATURE_APP2SD_DMCRYPT_ENCRYPTION
  31 #define DMCRYPT_ITER_TIME       50
  32 #define DMCRYPT_KEY_LEN         128
  33 #endif
  34
  35 static int _app2sd_make_directory(const char *path, uid_t uid)
  36 {
  37         int ret = 0;
  38         int fd = -1;
  39         mode_t mode = DIR_PERMS;
  40         struct passwd pwd;
  41         struct passwd *pwd_result;
  42         char buf[1024] = { 0, };
  43
  44         ret = _app2sd_delete_directory(path);
  45         if (ret) {
  46                 _E("unable to delete (%s), errno(%d)", path, errno);
  47                 return APP2EXT_ERROR_DELETE_DIRECTORY;
  48         }
  49
  50         ret = getpwuid_r(uid, &pwd, buf, sizeof(buf), &pwd_result);
  51         if (ret != 0 || pwd_result == NULL) {
  52                 _E("get uid failed(%d)", ret);
  53                 return APP2EXT_ERROR_ACCESS_FILE;
  54         }
  55         _D("uid(%d), gid(%d)", uid, pwd.pw_gid);
  56
  57         /* create directory */
  58         ret = mkdir(path, mode);
  59         if (ret) {
  60                 if (errno != EEXIST) {
  61                         _E("create directory failed," \
  62                                 " error no is (%d)", errno);
  63                         return APP2EXT_ERROR_CREATE_DIRECTORY;
  64                 }
  65         }
  66
  67         fd = open(path, O_RDONLY|O_DIRECTORY);
  68         if (fd < 0) {
  69                 _E("can't open path(%s)", path);
  70                 return APP2EXT_ERROR_OPEN_DIR;
  71         }
  72
  73         ret = fchmod(fd, 0755);
  74         if (ret < 0) {
  75                 _E("change file permission error");
  76                 close(fd);
  77                 return APP2EXT_ERROR_ACCESS_FILE;
  78         }
  79
  80         ret = fchown(fd, uid, pwd.pw_gid);
  81         if (ret < 0) {
  82                 _E("change file owner error");
  83                 close(fd);
  84                 return APP2EXT_ERROR_ACCESS_FILE;
  85         }
  86
  87         close(fd);
  88
  89         return APP2EXT_SUCCESS;
  90 }
  91
  92 char *_app2sd_find_associated_device_node(const char *loopback_device)
  93 {
  94         char *ret_result = NULL;
  95         char delims[] = ":";
  96         char *result = NULL;
  97         char dev[FILENAME_MAX] = { 0, };
  98         char *devnode = NULL;
  99
 100         result = (char *)_app2sd_find_associated_device(loopback_device);
 101         if (result == NULL) {
 102                 _D("there is no the associated file (%s)", loopback_device);
 103                 return NULL;
 104         }
 105
 106         /* process the string*/
 107         snprintf(dev, sizeof(dev), "%s", result);
 108
 109         if (strstr(dev, "dev") == NULL) {
 110                 _E("unable to find the associated file");
 111                 free(result);
 112                 return NULL;
 113         } else {
 114                 char *saveptr = NULL;
 115                 ret_result = strtok_r(dev, delims, &saveptr);
 116                 if (ret_result)
 117                         devnode = strdup(ret_result);
 118         }
 119
 120         free(result);
 121
 122         return devnode;
 123 }
 124
 125 char *_app2sd_create_loopdevice_node(void)
 126 {
 127         char *ret_result = NULL;
 128         mode_t mode = DIR_PERMS;
 129         int count = 0;
 130         int ret = APP2EXT_SUCCESS;
 131         char *result = NULL;
 132         FILE *fp = NULL;
 133
 134         result = (char *)_app2sd_find_free_device();
 135         _D("find_free_device(%s)", result);
 136
 137         /* validate the result */
 138         if (result == NULL || strstr(result, "/dev") == NULL) {
 139                 _D("no device found, creating device node");
 140
 141                 if (result) {
 142                         free(result);
 143                         result = NULL;
 144                 }
 145                 count = 0;
 146                 char dev_path[BUF_SIZE] = { 0, };
 147                 snprintf(dev_path, sizeof(dev_path), "/dev/loop%d", count);
 148                 while ((fp = fopen(dev_path, "r+")) != NULL) {
 149                         count = count + 1;
 150                         snprintf(dev_path, sizeof(dev_path), "/dev/loop%d", count);
 151                         _D("next dev path for checking is (%s)",
 152                                      dev_path);
 153                         fclose(fp);
 154                 }
 155                 _D("device node candidate is (%s)", dev_path);
 156                 dev_t dev_node;
 157                 dev_node = makedev(DEV_MAJOR, count);
 158                 ret = mknod(dev_path, S_IFBLK | mode, dev_node);
 159                 if (ret < 0) {
 160                         _E("error while creating the device node: errno is (%d)",
 161                              errno);
 162                         return NULL;
 163                 }
 164                 ret_result = (char *)malloc(strlen(dev_path) + 1);
 165                 if (ret_result == NULL) {
 166                         _E("unable to allocate memory");
 167                         return NULL;
 168                 }
 169                 memset(ret_result, '\0', strlen(dev_path) + 1);
 170                 memcpy(ret_result, dev_path, strlen(dev_path));
 171         } else {
 172                 ret_result = (char *)malloc(strlen(result) + 1);
 173                 if (ret_result == NULL) {
 174                         _E("malloc failed");
 175                         free(result);
 176                         result = NULL;
 177                         return NULL;
 178                 }
 179                 memset(ret_result, '\0', strlen(result) + 1);
 180                 if (strlen(result) > 0)
 181                         memcpy(ret_result, result, strlen(result) - 1);
 182
 183                 free(result);
 184                 result = NULL;
 185
 186         }
 187         return ret_result;
 188 }
 189
 190 char *_app2sd_do_loopback_encryption_setup(const char *pkgid,
 191         const char *loopback_device, uid_t uid)
 192 {
 193         int ret = APP2EXT_SUCCESS;
 194         char *passwd = NULL;
 195         char *result = NULL;
 196         char *device_node = NULL;
 197
 198         if (pkgid == NULL) {
 199                 _E("invalid argument");
 200                 return NULL;
 201         }
 202
 203         /* get password for loopback encryption */
 204         ret = _app2sd_initialize_db();
 205         if (ret) {
 206                 _E("app2sd db initialize failed");
 207                 return NULL;
 208         }
 209
 210         if ((passwd = _app2sd_get_password_from_db(pkgid, uid)) == NULL) {
 211                 passwd = (char *)_app2sd_generate_password();
 212                 if (NULL == passwd) {
 213                         _E("unable to generate password");
 214                         return NULL;
 215                 } else {
 216                         if ((ret = _app2sd_set_info_in_db(pkgid,
 217                                 passwd, loopback_device, uid)) < 0) {
 218                                 _E("unable to save info");
 219                                 free(passwd);
 220                                 passwd = NULL;
 221                                 return NULL;
 222                         }
 223                 }
 224         }
 225
 226         /* get free device node*/
 227         device_node = _app2sd_create_loopdevice_node();
 228         if (NULL == device_node) {
 229                 free(passwd);
 230                 passwd = NULL;
 231                 _E("unable to find free loopback node");
 232                 return NULL;
 233         }
 234
 235         _D("device_node (%s)", device_node);
 236
 237         result = (char *)_app2sd_encrypt_device(device_node,
 238                 loopback_device, passwd);
 239         if (result == NULL) {
 240                 _E("encryption failed");
 241                 free(passwd);
 242                 passwd = NULL;
 243                 return NULL;
 244         } else {
 245                 _D("result (%s)", result);
 246                 free(result);
 247                 result = NULL;
 248                 free(passwd);
 249                 passwd = NULL;
 250                 return device_node;
 251         }
 252 }
 253
 254 char *_app2sd_do_loopback_duplicate_encryption_setup(const char *pkgid,
 255                 const char *temp_pkgid, const char *temp_loopback_device,
 256                 char *passwd, uid_t uid)
 257 {
 258         char *result = NULL;
 259         char *device_node = NULL;
 260
 261         if (pkgid == NULL || temp_pkgid == NULL ||
 262                 temp_loopback_device == NULL || passwd == NULL) {
 263                 _E("invalid argument");
 264                 return NULL;
 265         }
 266
 267         /* get free device node*/
 268         device_node = _app2sd_create_loopdevice_node();
 269         if (NULL == device_node) {
 270                 _E("unable to find free loopback node");
 271                 return NULL;
 272         }
 273         result = (char *)_app2sd_encrypt_device(device_node,
 274                 temp_loopback_device, passwd);
 275         if (result == NULL) {
 276                 _E("encryption failed");
 277                 return NULL;
 278         } else {
 279                 if (strlen(result) == 0) {
 280                         free(result);
 281                         result = NULL;
 282                         return device_node;
 283                 } else {
 284                         _E("error is (%s)", result);
 285                         free(result);
 286                         result = NULL;
 287                         return NULL;
 288                 }
 289         }
 290
 291         return device_node;
 292 }
 293
 294 int _app2sd_remove_loopback_encryption_setup(const char *loopback_device)
 295 {
 296         int ret = APP2EXT_SUCCESS;
 297         char *result = NULL;
 298         char *dev_node = NULL;
 299
 300         if ((dev_node = _app2sd_find_associated_device_node(loopback_device))
 301                 == NULL) {
 302                 _E("Unable to find the association");
 303                 ret = APP2EXT_ERROR_FIND_ASSOCIATED_DEVICE_NODE;
 304         }
 305
 306         result = (char *)_app2sd_detach_loop_device(dev_node);
 307         if (result == NULL) {
 308                 _E("error in detaching");
 309                 ret = APP2EXT_ERROR_DETACH_LOOPBACK_DEVICE;
 310         } else {
 311                 free(result);
 312                 result = NULL;
 313         }
 314
 315         if (dev_node) {
 316                 free(dev_node);
 317                 dev_node = NULL;
 318         }
 319
 320         return ret;
 321 }
 322
 323 int _app2sd_remove_all_loopback_encryption_setups(const char *loopback_device)
 324 {
 325         int ret = APP2EXT_SUCCESS;
 326         char *result = NULL;
 327         char *dev_node = NULL;
 328         while (1) {
 329                 if ((dev_node =
 330                         _app2sd_find_associated_device_node(loopback_device))
 331                         == NULL) {
 332                         _E("finish to find the association");
 333                         ret = APP2EXT_SUCCESS;
 334                         break;
 335                 }
 336
 337                 _D("find node (%s)", dev_node);
 338
 339                 result = (char *)_app2sd_detach_loop_device(dev_node);
 340                 if (result == NULL) {
 341                         _E("error in detaching");
 342                         ret = APP2EXT_ERROR_DETACH_LOOPBACK_DEVICE;
 343                         break;
 344                 } else {
 345                         free(result);
 346                         result = NULL;
 347                 }
 348                 if (dev_node) {
 349                         free(dev_node);
 350                         dev_node = NULL;
 351                 }
 352         }
 353
 354         return ret;
 355 }
 356
 357 #ifdef TIZEN_FEATURE_APP2SD_DMCRYPT_ENCRYPTION
 358 int _app2sd_dmcrypt_setup_device(const char *pkgid,
 359                 const char *loopback_device, bool is_dup, uid_t uid)
 360 {
 361         int ret = APP2EXT_SUCCESS;
 362         char *passwd = NULL;
 363         char dmcrypt_setup_cmd[BUF_SIZE] = { 0, };
 364         char err_buf[BUF_SIZE] = { 0, };
 365
 366         if (pkgid == NULL || loopback_device == NULL) {
 367                 _E("invalid argument");
 368                 return APP2EXT_ERROR_INVALID_ARGUMENTS;
 369         }
 370
 371         /* get password for dmcrypt encryption */
 372         ret = _app2sd_initialize_db();
 373         if (ret) {
 374                 _E("app2sd db initialize failed");
 375                 return APP2EXT_ERROR_DB_INITIALIZE;
 376         }
 377
 378         passwd = _app2sd_get_password_from_db(pkgid, uid);
 379         if (passwd == NULL) {
 380                 if (is_dup) {
 381                         _E("no password found for (%s)", pkgid);
 382                         return APP2EXT_ERROR_SQLITE_REGISTRY;
 383                 }
 384                 passwd = (char *)_app2sd_generate_password();
 385                 if (NULL == passwd) {
 386                         _E("unable to generate password\n");
 387                         return APP2EXT_ERROR_PASSWD_GENERATION;
 388                 } else {
 389                         if ((ret = _app2sd_set_info_in_db(pkgid, passwd,
 390                                 loopback_device, uid)) < 0) {
 391                                 _E("unable to save password");
 392                                 free(passwd);
 393                                 passwd = NULL;
 394                                 return APP2EXT_ERROR_SQLITE_REGISTRY;
 395                         }
 396                 }
 397         }
 398
 399         snprintf(dmcrypt_setup_cmd, sizeof(dmcrypt_setup_cmd),
 400                 "/bin/echo '%s' | /sbin/cryptsetup -q -i %d " \
 401                 "-c aes-cbc-lmk -s %d --align-payload=8 luksFormat %s",
 402                 passwd, DMCRYPT_ITER_TIME, DMCRYPT_KEY_LEN, loopback_device);
 403
 404         ret = system(dmcrypt_setup_cmd);
 405         if (ret) {
 406                 strerror_r(errno, err_buf, sizeof(err_buf));
 407                 _E("Error setting up dmcrypt on app2sd file, " \
 408                         "error(%s), ret(%d)", err_buf, ret);
 409                 if (passwd) {
 410                         free(passwd);
 411                         passwd = NULL;
 412                 }
 413                 return APP2EXT_ERROR_SETUP_DMCRYPT_DEVICE;
 414         }
 415
 416         if (passwd) {
 417                 free(passwd);
 418                 passwd = NULL;
 419         }
 420
 421         return ret;
 422 }
 423
 424 int _app2sd_dmcrypt_open_device(const char *pkgid, const char *loopback_device,
 425                 bool is_dup, uid_t uid, char **dev_node)
 426 {
 427         int ret = APP2EXT_SUCCESS;
 428         char *passwd;
 429         char dmcrypt_open_cmd[BUF_SIZE] = { 0, };
 430         char dev_name[BUF_SIZE] = { 0, };
 431         char buf[BUF_SIZE] = { 0, };
 432         int len = 0;
 433
 434         if (pkgid == NULL || loopback_device == NULL) {
 435                 _E("invalid argument");
 436                 return APP2EXT_ERROR_INVALID_ARGUMENTS;
 437         }
 438
 439         if (is_dup)
 440                 snprintf(dev_name, sizeof(dev_name), "%s.new_%d", pkgid, uid);
 441         else
 442                 snprintf(dev_name, sizeof(dev_name), "%s_%d", pkgid, uid);
 443
 444         /* get password for dmcrypt encryption */
 445         ret = _app2sd_initialize_db();
 446         if (ret) {
 447                 _E("app2sd db initialize failed");
 448                 return APP2EXT_ERROR_DB_INITIALIZE;
 449         }
 450
 451         passwd = _app2sd_get_password_from_db(pkgid, uid);
 452         if (passwd == NULL) {
 453                 _E("no password found for [%s]", pkgid);
 454                 return APP2EXT_ERROR_SQLITE_REGISTRY;
 455         }
 456
 457         if (_app2sd_check_is_luks_device(loopback_device) == 0) {
 458                 _W("legacy image format!");
 459                 snprintf(dmcrypt_open_cmd, sizeof(dmcrypt_open_cmd),
 460                         "/bin/echo '%s' | /sbin/cryptsetup " \
 461                         "-M plain -c aes-cbc-plain -h plain open %s %s",
 462                         passwd, loopback_device, dev_name);
 463         } else {
 464                 snprintf(dmcrypt_open_cmd, sizeof(dmcrypt_open_cmd),
 465                         "/bin/echo '%s' | /sbin/cryptsetup -q luksOpen %s %s",
 466                         passwd, loopback_device, dev_name);
 467         }
 468         free(passwd);
 469
 470         ret = system(dmcrypt_open_cmd);
 471         if (ret) {
 472                 strerror_r(errno, buf, sizeof(buf));
 473                 _E("error opening dmcrypt device, error: [%s]", buf);
 474                 return APP2EXT_ERROR_OPEN_DMCRYPT_DEVICE;
 475         }
 476
 477         snprintf(buf, sizeof(buf), "/dev/mapper/%s", dev_name);
 478         len = strlen(buf);
 479         *dev_node = (char *)calloc(len + 1, sizeof(char));
 480         if (*dev_node == NULL) {
 481                 _E("memory alloc failed");
 482                 return APP2EXT_ERROR_OPEN_DMCRYPT_DEVICE;
 483         }
 484         snprintf(*dev_node, len + 1, "%s", buf);
 485
 486         return ret;
 487 }
 488
 489 int _app2sd_dmcrypt_close_device(const char *pkgid, uid_t uid)
 490 {
 491         int ret = APP2EXT_SUCCESS;
 492         char dev_node[BUF_SIZE] = { '\0' };
 493         char dmcrypt_close_cmd[BUF_SIZE] = { '\0' };
 494         char err_buf[BUF_SIZE] = { '\0' };
 495         char *t_dev_node = NULL;
 496
 497         if (pkgid == NULL) {
 498                 _E("invalid argument\n");
 499                 return APP2EXT_ERROR_INVALID_ARGUMENTS;
 500         }
 501
 502         t_dev_node = _app2sd_find_associated_dmcrypt_device_node(pkgid, uid);
 503         if (!t_dev_node) {
 504                 _W("no associated device node(%s_%d) found", pkgid, uid);
 505                 return APP2EXT_ERROR_DMCRYPT_DEVICE_UNAVAILABLE;
 506         }
 507
 508         free(t_dev_node);
 509         t_dev_node = NULL;
 510
 511         snprintf(dev_node, sizeof(dev_node), "/dev/mapper/%s_%d", pkgid, uid);
 512         snprintf(dmcrypt_close_cmd, sizeof(dmcrypt_close_cmd),
 513                 "/sbin/cryptsetup -q luksClose %s", dev_node);
 514         ret = system(dmcrypt_close_cmd);
 515         if (ret) {
 516                 strerror_r(errno, err_buf, sizeof(err_buf));
 517                 _E("error closing dmcrypt on app2sd file,"\
 518                         " error: [%s]", err_buf);
 519                 return APP2EXT_ERROR_CLOSE_DMCRYPT_DEVICE;
 520         }
 521
 522         return ret;
 523 }
 524
 525 char *_app2sd_find_associated_dmcrypt_device_node(const char *pkgid, uid_t uid)
 526 {
 527         char *dev_node = NULL;
 528         char buf[BUF_SIZE] = { 0, };
 529         int len = 0;
 530
 531         snprintf(buf, sizeof(buf), "/dev/mapper/%s_%d", pkgid, uid);
 532         len = strlen(buf);
 533         dev_node = (char *)calloc(len + 1, sizeof(char));
 534         if (dev_node == NULL) {
 535                 _E("memory alloc failed");
 536                 return NULL;
 537         }
 538         snprintf(dev_node, len + 1, "%s", buf);
 539
 540         if (access(dev_node, F_OK) == 0) {
 541                 _D("device_node: (%s)", dev_node);
 542                 return dev_node;
 543         }
 544         _D("can not access dev_node(%s), errno(%d)", dev_node, errno);
 545
 546         free(dev_node);
 547         dev_node = NULL;
 548
 549         return NULL;
 550 }
 551
 552 char *_app2sd_dmcrypt_duplicate_encryption_setup(const char *pkgid,
 553                 const char *temp_loopback_device, uid_t uid)
 554 {
 555         int ret = APP2EXT_SUCCESS;
 556         char *device_node = NULL;
 557
 558         if (pkgid == NULL || temp_loopback_device == NULL) {
 559                 _E("invalid argument\n");
 560                 return NULL;
 561         }
 562
 563         ret = _app2sd_dmcrypt_setup_device(pkgid, temp_loopback_device, true, uid);
 564         if (ret) {
 565                 _E("dmcrypt setup device error(%d)", ret);
 566                 return NULL;
 567         }
 568
 569         ret = _app2sd_dmcrypt_open_device(pkgid, temp_loopback_device, true,
 570                 uid, &device_node);
 571         if (ret) {
 572                 _E("dmcrypt open device error");
 573                 return NULL;
 574         }
 575
 576         return device_node;
 577 }
 578 #endif
 579
 580 int _app2sd_create_loopback_device(const char *pkgid,
 581                 const char *loopback_device, int size)
 582 {
 583         int ret = APP2EXT_SUCCESS;
 584         char command[FILENAME_MAX] = { 0, };
 585         char buff[BUF_SIZE] = { 0, };
 586         FILE *fp = NULL;
 587
 588         if (NULL == pkgid || size <= 0) {
 589                 _E("invalid argument");
 590                 return APP2EXT_ERROR_INVALID_ARGUMENTS;
 591         }
 592         snprintf(command, sizeof(command), "of=%s", loopback_device);
 593         snprintf(buff, sizeof(buff), "count=%d", size);
 594
 595         const char *argv1[] = { "/bin/dd", "if=/dev/zero",
 596                 command, "bs=1M", buff, NULL };
 597
 598         if ((fp = fopen(loopback_device, "r+")) != NULL) {
 599                 _W("encrypted file already exists (%s)",
 600                         loopback_device);
 601                 fclose(fp);
 602                 return APP2EXT_ERROR_PKG_EXISTS;
 603         }
 604
 605         ret = _xsystem(argv1);
 606         if (ret)
 607                 _E("command (%s) failed, ret(%d), errno(%d)", command, ret, errno);
 608
 609         return ret;
 610 }
 611
 612 int _app2sd_delete_loopback_device(const char *loopback_device)
 613 {
 614         int ret = APP2EXT_SUCCESS;
 615
 616         ret = unlink(loopback_device);
 617         if (ret) {
 618                 if (errno == ENOENT) {
 619                         _W("unable to access file (%s)", loopback_device);
 620                 } else {
 621                         _E("unable to delete (%s)", loopback_device);
 622                         return APP2EXT_ERROR_DELETE_LOOPBACK_DEVICE;
 623                 }
 624         }
 625
 626         return APP2EXT_SUCCESS;
 627 }
 628
 629 int _app2sd_create_file_system(const char *device_path)
 630 {
 631         int ret = APP2EXT_SUCCESS;
 632         FILE *fp = NULL;
 633         char err_buf[1024] = {0,};
 634
 635         if (device_path == NULL) {
 636                 _E("invalid param");
 637                 return APP2EXT_ERROR_INVALID_ARGUMENTS;
 638         }
 639
 640         /* Format the filesystem [create a filesystem]*/
 641         const char *argv[] = { "/sbin/mkfs.ext4", device_path, NULL };
 642         fp = fopen(device_path, "r+");
 643         if (fp == NULL) {
 644                 strerror_r(errno, err_buf, sizeof(err_buf));
 645                 _E("unable to access (%s) error is (%d, %s)",
 646                      device_path, errno, err_buf);
 647                 return APP2EXT_ERROR_ACCESS_FILE;
 648         } else {
 649                 fclose(fp);
 650         }
 651         ret = _xsystem(argv);
 652         if (ret) {
 653                 strerror_r(errno, err_buf, sizeof(err_buf));
 654                 _E("creating file system failed, error is (%s)",
 655                      err_buf);
 656                 return APP2EXT_ERROR_CREATE_FS;
 657         }
 658         return ret;
 659 }
 660
 661 static int _app2sd_create_dir_with_link(const char *application_path,
 662                 const char *pkgid, const char *dir_name, uid_t uid)
 663 {
 664         int ret = APP2EXT_SUCCESS;
 665         char app_dir_mmc_path[FILENAME_MAX] = { 0, };
 666         char app_dir_path[FILENAME_MAX] = { 0, };
 667
 668         snprintf(app_dir_mmc_path, sizeof(app_dir_mmc_path), "%s/.mmc/%s",
 669                 application_path, dir_name);
 670         snprintf(app_dir_path, sizeof(app_dir_path), "%s/%s",
 671                 application_path, dir_name);
 672
 673         ret = _app2sd_make_directory(app_dir_mmc_path, uid);
 674         if (ret) {
 675                 _E("create directory failed");
 676                 return APP2EXT_ERROR_CREATE_DIRECTORY;
 677         }
 678
 679         if ((ret = symlink(app_dir_mmc_path,
 680                 app_dir_path)) < 0) {
 681                 if (errno == EEXIST) {
 682                         _D("file with symlink name present (%s)",
 683                                 app_dir_path);
 684                 } else {
 685                         _E("symbolic link creation "
 686                                 "failed, error no is (%d)", errno);
 687                         return APP2EXT_ERROR_CREATE_SYMLINK;
 688                 }
 689         }
 690
 691         return APP2EXT_SUCCESS;
 692 }
 693
 694 static int _app2sd_create_directory_entry(const char *application_path,
 695                 const char *pkgid, GList *dir_list, uid_t uid)
 696 {
 697         int ret = APP2EXT_SUCCESS;
 698         GList *list = NULL;
 699         app2ext_dir_details *dir_detail = NULL;
 700
 701         list = g_list_first(dir_list);
 702         while (list) {
 703                 dir_detail = (app2ext_dir_details *)list->data;
 704                 if (dir_detail && dir_detail->name
 705                         && dir_detail->type == APP2EXT_DIR_RO) {
 706                         ret = _app2sd_create_dir_with_link(application_path,
 707                                 pkgid, dir_detail->name, uid);
 708                         if (ret)
 709                                 return ret;
 710                 }
 711                 list = g_list_next(list);
 712         }
 713         return APP2EXT_SUCCESS;
 714 }
 715
 716 int _app2sd_mount_app_content(const char *application_path, const char *pkgid,
 717                 const char *dev, int mount_type, GList *dir_list,
 718                 app2sd_cmd cmd, uid_t uid)
 719 {
 720         int ret = APP2EXT_SUCCESS;
 721         int fd = -1;
 722         char app_mmc_path[FILENAME_MAX] = { 0, };
 723         char temp_path[FILENAME_MAX] = { 0, };
 724         char err_buf[1024] = {0,};
 725         struct timespec time = {
 726                 .tv_sec = 0,
 727                 .tv_nsec = 1000 * 1000 * 200
 728         };
 729
 730         if (NULL == dev) {
 731                 _E("input param is NULL (%s)",
 732                              dev);
 733                 return APP2EXT_ERROR_INVALID_ARGUMENTS;
 734         }
 735
 736         /* check directory existence */
 737         fd = open(application_path, O_RDONLY|O_DIRECTORY);
 738         if (fd < 0) {
 739                 _E("path(%s) error(%d)", application_path, errno);
 740                 return APP2EXT_ERROR_OPEN_DIR;
 741         }
 742         close(fd);
 743
 744         snprintf(app_mmc_path, sizeof(app_mmc_path), "%s/.mmc",
 745                 application_path);
 746         fd = open(app_mmc_path, O_RDONLY|O_DIRECTORY);
 747         if (fd < 0) {
 748                 _E("path(%s) error(%d)", app_mmc_path, errno);
 749                 return APP2EXT_ERROR_OPEN_DIR;
 750         }
 751         close(fd);
 752
 753         nanosleep(&time, NULL); /* 200ms sleep */
 754         _D("give a delay for mount");
 755
 756         switch (mount_type) {
 757         case MOUNT_TYPE_RD:
 758                 if ((ret = mount(dev, app_mmc_path, FS_TYPE,
 759                         MS_MGC_VAL | MS_RDONLY | MS_NOSUID, NULL)) < 0) {
 760                         _E("read only mount failed, " \
 761                                 "errono is (%d), " \
 762                                 "dev is (%s) path is (%s)",
 763                                 errno, dev, app_mmc_path);
 764                         ret = APP2EXT_ERROR_MOUNT;
 765                 }
 766                 break;
 767         case MOUNT_TYPE_RW:
 768                 if ((ret = mount(dev, app_mmc_path, FS_TYPE,
 769                         MS_MGC_VAL | MS_NOSUID, NULL)) < 0) {
 770                         _E("read write mount failed, " \
 771                                 "errono is (%d)", errno);
 772                         ret = APP2EXT_ERROR_MOUNT;
 773                 }
 774                 break;
 775         case MOUNT_TYPE_RW_NOEXEC:
 776                 if ((ret = mount(dev, app_mmc_path, FS_TYPE,
 777                         MS_MGC_VAL | MS_NOEXEC | MS_NOSUID, NULL)) < 0) {
 778                         _E("rwnx mount failed " \
 779                                 "errono is (%d)", errno);
 780                         ret = APP2EXT_ERROR_MOUNT;
 781                 }
 782                 break;
 783         case MOUNT_TYPE_RD_REMOUNT:
 784                 if ((ret = mount(dev, app_mmc_path, FS_TYPE,
 785                         MS_MGC_VAL | MS_RDONLY | MS_REMOUNT | MS_NOSUID,
 786                         NULL)) < 0) {
 787                         _E("read remount failed "
 788                                 "errono is (%d)", errno);
 789                         ret = APP2EXT_ERROR_MOUNT;
 790                 }
 791                 break;
 792         case MOUNT_TYPE_RW_REMOUNT:
 793                 if ((ret = mount(dev, app_mmc_path, FS_TYPE,
 794                         MS_MGC_VAL | MS_REMOUNT | MS_NOSUID, NULL)) < 0) {
 795                         _E("read write remount failed "
 796                                 "errono(%d), errstr(%s)", errno,
 797                                 strerror_r(errno, err_buf, sizeof(err_buf)));
 798                                 ret = APP2EXT_ERROR_MOUNT;
 799                 }
 800                 break;
 801         default:
 802                 _E("invalid mount type");
 803                 break;
 804         }
 805
 806         if (cmd == APP2SD_PRE_INSTALL || cmd == APP2SD_MOVE_APP_TO_MMC ||
 807                 cmd == APP2SD_PRE_UPGRADE) {
 808                 ret = _app2sd_create_directory_entry(application_path,
 809                         pkgid, dir_list, uid);
 810         }
 811
 812         if (mount_type != MOUNT_TYPE_RD &&
 813                 mount_type != MOUNT_TYPE_RD_REMOUNT) {
 814                 /* change lost+found permission */
 815                 snprintf(temp_path, sizeof(temp_path), "%s/lost+found",
 816                                 app_mmc_path);
 817                 ret = _app2sd_make_directory(temp_path, uid);
 818                 if (ret) {
 819                         _E("create directory(%s) failed", temp_path);
 820                         return APP2EXT_ERROR_CREATE_DIRECTORY;
 821                 }
 822         }
 823
 824         return ret;
 825 }
 826
 827 int _app2sd_unmount_app_content(const char *application_path)
 828 {
 829         int ret = APP2EXT_SUCCESS;
 830         char app_mmc_path[FILENAME_MAX] = { 0, };
 831         char err_buf[1024] = {0,};
 832
 833         snprintf(app_mmc_path, sizeof(app_mmc_path), "%s/.mmc",
 834                 application_path);
 835         if ((ret = umount(app_mmc_path)) < 0) {
 836                 strerror_r(errno, err_buf, sizeof(err_buf));
 837                 _D("unable to umount the dir, ret(%d) error(%d, %s)",
 838                         ret, errno, err_buf);
 839         }
 840
 841         return ret;
 842 }
 843
 844 static int _app2sd_move_to_archive(const char *src_path, const char *arch_path)
 845 {
 846         int ret = APP2EXT_SUCCESS;
 847
 848         ret = _app2sd_copy_dir(src_path, arch_path);
 849         if (ret && ret != APP2EXT_ERROR_ACCESS_FILE) {
 850                 char err_buf[1024] = {0,};
 851                 strerror_r(errno, err_buf, sizeof(err_buf));
 852                 _E("unable to copy from (%s) to (%s), err is (%s)",
 853                         src_path, arch_path, err_buf);
 854                 return APP2EXT_ERROR_MOVE;
 855         }
 856
 857         ret = _app2sd_delete_directory((char *)src_path);
 858         if (ret) {
 859                 _E("unable to delete (%s)", src_path);
 860                 return APP2EXT_ERROR_DELETE_DIRECTORY;
 861         }
 862
 863         return ret;
 864 }
 865
 866 static int _app2sd_move_app_to_external(const char *pkgid, GList *dir_list,
 867                 uid_t uid, char *mmc_path, char **image_path)
 868 {
 869         int ret = APP2EXT_SUCCESS;
 870         mode_t mode = DIR_PERMS;
 871         char temp_dir_path[FILENAME_MAX] = { 0, };
 872         char app_mmc_path[FILENAME_MAX] = { 0, };
 873         char app_archive_path[FILENAME_MAX] = { 0, };
 874         char application_path[FILENAME_MAX] = { 0, };
 875         char loopback_device[FILENAME_MAX] = { 0, };
 876         unsigned long long total_size = 0;
 877         int reqd_size = 0;
 878         int reqd_disk_size = 0;
 879         char *device_node = NULL;
 880 #if !defined(TIZEN_FEATURE_APP2SD_DMCRYPT_ENCRYPTION)
 881         char *devi = NULL;
 882 #endif
 883         int free_mmc_mem = 0;
 884         FILE *fp = NULL;
 885         GList *list = NULL;
 886         app2ext_dir_details *dir_detail = NULL;
 887         char err_buf[1024] = { 0,};
 888         char *encoded_id = NULL;
 889
 890         encoded_id = _app2sd_get_encoded_name(pkgid, uid);
 891         if (encoded_id == NULL)
 892                 return APP2EXT_ERROR_MEMORY_ALLOC_FAILED;
 893
 894         snprintf(loopback_device, sizeof(loopback_device), "%s/%s/%s",
 895                         mmc_path, EXTIMG_DIR, encoded_id);
 896         free(encoded_id);
 897         _app2sd_set_application_path(pkgid, uid, application_path,
 898                 sizeof(application_path));
 899
 900         /* check whether application is in external memory or not */
 901         fp = fopen(loopback_device, "r+");
 902         if (fp != NULL) {
 903                 _W("Already %s entry is present in the SD Card, " \
 904                         "delete entry and go on without return", pkgid);
 905                 fclose(fp);
 906                 _app2sd_force_clean(pkgid, application_path, loopback_device, uid);
 907         }
 908
 909         snprintf(app_mmc_path, sizeof(app_mmc_path), "%s/.mmc",
 910                 application_path);
 911         snprintf(app_archive_path, sizeof(app_archive_path), "%s/.archive",
 912                 application_path);
 913
 914         ret = mkdir(app_mmc_path, mode);
 915         if (ret) {
 916                 if (errno != EEXIST) {
 917                         _E("unable to create directory for archiving," \
 918                                 " error(%d)", errno);
 919                         return APP2EXT_ERROR_CREATE_DIRECTORY;
 920                 }
 921         }
 922
 923         ret = mkdir(app_archive_path, mode);
 924         if (ret) {
 925                 if (errno != EEXIST) {
 926                         _E("unable to create directory for archiving," \
 927                                 " error(%d)", errno);
 928                         return APP2EXT_ERROR_CREATE_DIRECTORY;
 929                 }
 930         }
 931
 932         list = g_list_first(dir_list);
 933         while (list) {
 934                 dir_detail = (app2ext_dir_details *)list->data;
 935                 if (dir_detail && dir_detail->name
 936                         && dir_detail->type == APP2EXT_DIR_RO) {
 937                         memset(temp_dir_path, '\0', sizeof(temp_dir_path));
 938                         snprintf(temp_dir_path, sizeof(temp_dir_path),
 939                                  "%s/%s", application_path,
 940                                  dir_detail->name);
 941                         _D("cal size of app dirs, temp_dir_path(%s)",
 942                                 temp_dir_path);
 943                         total_size +=
 944                             _app2sd_calculate_dir_size(temp_dir_path);
 945                 }
 946                 list = g_list_next(list);
 947         }
 948
 949         reqd_size = ((total_size) / (1024 * 1024)) + 2;
 950         reqd_disk_size = reqd_size + ceil(reqd_size * 0.2);
 951
 952         /* find avialable free memory in the MMC card */
 953         ret = _app2sd_get_available_free_memory(mmc_path, &free_mmc_mem);
 954         if (ret) {
 955                 _E("unable to get available free memory in MMC (%d)", ret);
 956                 return APP2EXT_ERROR_MMC_STATUS;
 957         }
 958         /* if avaialalbe free memory in MMC is less than
 959          * required size + 5MB, return error
 960          */
 961         if (reqd_disk_size > free_mmc_mem) {
 962                 _E("insufficient memory in MMC for application installation (%d)",
 963                         ret);
 964                 return APP2EXT_ERROR_MMC_INSUFFICIENT_MEMORY;
 965         }
 966         /* create a loopback device */
 967         ret = _app2sd_create_loopback_device(pkgid, loopback_device,
 968                 (reqd_disk_size + PKG_BUF_SIZE));
 969         if (ret) {
 970                 _E("loopback node creation failed");
 971                 return ret;
 972         }
 973
 974 #ifdef TIZEN_FEATURE_APP2SD_DMCRYPT_ENCRYPTION
 975         ret = _app2sd_dmcrypt_setup_device(pkgid, loopback_device, false, uid);
 976         if (ret) {
 977                 _E("dmcrypt setup device error(%d)", ret);
 978                 return APP2EXT_ERROR_SETUP_DMCRYPT_DEVICE;
 979         }
 980
 981         ret = _app2sd_dmcrypt_open_device(pkgid, loopback_device, false,
 982                 uid, &device_node);
 983         if (ret) {
 984                 _E("dmcrypt open device error");
 985                 return APP2EXT_ERROR_OPEN_DMCRYPT_DEVICE;
 986         }
 987 #else
 988         /* perform loopback encryption setup */
 989         device_node = _app2sd_do_loopback_encryption_setup(pkgid,
 990                 loopback_device, uid);
 991         if (!device_node) {
 992                 _E("loopback encryption setup failed");
 993                 return APP2EXT_ERROR_DO_LOSETUP;
 994         }
 995         _D("device_node (%s)", device_node);
 996         /* check whether loopback device is associated with device node or not */
 997         devi = _app2sd_find_associated_device_node(loopback_device);
 998         if (devi == NULL) {
 999                 _E("finding associated device node failed");
1000                 ret = APP2EXT_ERROR_DO_LOSETUP;
1001                 goto ERR;
1002         } else {
1003                 free(devi);
1004                 devi = NULL;
1005         }
1006 #endif
1007         /* format the loopback file system */
1008         ret = _app2sd_create_file_system(device_node);
1009         if (ret) {
1010                 _E("create ext4 filesystem failed");
1011                 ret = APP2EXT_ERROR_CREATE_FS;
1012                 goto ERR;
1013         }
1014
1015         list = g_list_first(dir_list);
1016         while (list) {
1017                 dir_detail = (app2ext_dir_details *)list->data;
1018                 if (dir_detail && dir_detail->name
1019                         && dir_detail->type == APP2EXT_DIR_RO) {
1020                         memset(temp_dir_path, '\0', FILENAME_MAX);
1021                         snprintf(temp_dir_path, sizeof(temp_dir_path),
1022                                  "%s/%s", application_path,
1023                                 dir_detail->name);
1024                         _D("app2archive, temp_dir_path(%s)",
1025                                 temp_dir_path);
1026                         ret = _app2sd_move_to_archive(temp_dir_path,
1027                                 app_archive_path);
1028                         if (ret) {
1029                                 if (ret == APP2EXT_ERROR_ACCESS_FILE) {
1030                                         _E("unable to access (%s)",
1031                                                 temp_dir_path);
1032                                 } else {
1033                                         _E("unable to copy from (%s) to (%s)",
1034                                              temp_dir_path,
1035                                              app_archive_path);
1036                                 }
1037                                 goto ERR;
1038                         }
1039                 }
1040                 list = g_list_next(list);
1041         }
1042
1043         /* mount the loopback encrypted pseudo device on application installation path
1044          * as with Read Write permission
1045          */
1046         ret = _app2sd_mount_app_content(application_path, pkgid, device_node,
1047                 MOUNT_TYPE_RW, dir_list, APP2SD_MOVE_APP_TO_MMC, uid);
1048         if (ret) {
1049                 _E("mount failed");
1050                 goto ERR;
1051         }
1052
1053         list = g_list_first(dir_list);
1054         while (list) {
1055                 dir_detail = (app2ext_dir_details *)list->data;
1056                 if (dir_detail && dir_detail->name
1057                         && dir_detail->type == APP2EXT_DIR_RO) {
1058                         memset(temp_dir_path, '\0', sizeof(temp_dir_path));
1059                         snprintf(temp_dir_path, sizeof(temp_dir_path),
1060                                 "%s/%s", app_archive_path,
1061                                 dir_detail->name);
1062                         _D("archive2mmc, temp_dir_path(%s)",
1063                                 temp_dir_path);
1064                         ret = _app2sd_copy_dir(temp_dir_path,
1065                                 app_mmc_path);
1066                         if (ret) {
1067                                 if (ret == APP2EXT_ERROR_ACCESS_FILE) {
1068                                         _E("unable to access (%s)",
1069                                                 temp_dir_path);
1070                                 } else {
1071                                         strerror_r(errno,
1072                                                 err_buf, sizeof(err_buf));
1073                                         _E("unable to copy from (%s) to (%s)," \
1074                                                 " error is (%s)",
1075                                                 temp_dir_path,
1076                                                 app_mmc_path, err_buf);
1077                                 }
1078                                 goto ERR;
1079                         }
1080                         ret = _app2sd_delete_directory(temp_dir_path);
1081                         if (ret) {
1082                                 _E("unable to delete (%s)", temp_dir_path);
1083                                 goto ERR;
1084                         }
1085                 }
1086                 list = g_list_next(list);
1087         }
1088
1089         ret = _app2sd_delete_directory(app_archive_path);
1090         if (ret) {
1091                 _E("unable to delete (%s)", app_archive_path);
1092                 ret = APP2EXT_ERROR_DELETE_DIRECTORY;
1093                 goto ERR;
1094         }
1095
1096         *image_path = strdup(loopback_device);
1097         return APP2EXT_SUCCESS;
1098
1099 ERR:
1100         if (device_node) {
1101                 free(device_node);
1102                 device_node = NULL;
1103         }
1104
1105         *image_path = NULL;
1106         return ret;
1107 }
1108
1109 static int _app2sd_move_app_to_internal(const char *pkgid, GList *dir_list,
1110                 uid_t uid, char *mmc_path)
1111 {
1112         int ret = APP2EXT_SUCCESS;
1113         mode_t mode = DIR_PERMS;
1114         char temp_dir_path[FILENAME_MAX] = { 0, };
1115         char app_mmc_path[FILENAME_MAX] = { 0, };
1116         char app_archive_path[FILENAME_MAX] = { 0, };
1117         char application_path[FILENAME_MAX] = { 0, };
1118         char loopback_device[FILENAME_MAX] = { 0, };
1119         char *device_node = NULL;
1120         FILE *fp = NULL;
1121         GList *list = NULL;
1122         app2ext_dir_details *dir_detail = NULL;
1123         int reqd_size = 0;
1124         int free_internal_mem = 0;
1125         struct statvfs buf = {0,};
1126         unsigned long long temp = 0;
1127         char err_buf[1024] = {0,};
1128         char *encoded_id = NULL;
1129
1130         encoded_id = _app2sd_get_encoded_name(pkgid, uid);
1131         if (encoded_id == NULL)
1132                 return APP2EXT_ERROR_MEMORY_ALLOC_FAILED;
1133
1134         snprintf(loopback_device, sizeof(loopback_device), "%s/%s/%s",
1135                         mmc_path, EXTIMG_DIR, encoded_id);
1136         free(encoded_id);
1137         _app2sd_set_application_path(pkgid, uid, application_path,
1138                 sizeof(application_path));
1139
1140         /* check whether application is in external memory or not */
1141         fp = fopen(loopback_device, "r+");
1142         if (fp == NULL) {
1143                 _E("application (%s) is not installed on SD Card",
1144                      pkgid);
1145                 return APP2EXT_ERROR_FILE_ABSENT;
1146         } else {
1147                 fclose(fp);
1148                 fp = NULL;
1149         }
1150
1151         memset((void *)&buf, '\0', sizeof(struct statvfs));
1152         ret = statvfs(INTERNAL_STORAGE_PATH, &buf);
1153         if (0 == ret) {
1154                 temp = (buf.f_bsize * buf.f_bavail) / (1024 * 1024);
1155                 free_internal_mem = (int)temp;
1156         } else {
1157                 _E("unable to get internal storage size");
1158                 return APP2EXT_ERROR_MMC_INSUFFICIENT_MEMORY;
1159         }
1160
1161         fp = fopen(loopback_device, "r+");
1162         if (fp == NULL) {
1163                 _E("app entry is not present in SD card");
1164                 return APP2EXT_ERROR_INVALID_PACKAGE;
1165         }
1166         fclose(fp);
1167
1168         /* get installed app size*/
1169         temp = _app2sd_calculate_file_size(loopback_device);
1170         reqd_size = (int)((temp) / (1024 * 1024));
1171         _D("reqd size is (%d)", reqd_size);
1172
1173         if (reqd_size == 0) {
1174                 _E("app entry is not present in SD Card");
1175                 return APP2EXT_ERROR_LOOPBACK_DEVICE_UNAVAILABLE;
1176         }
1177
1178         _D("reqd size: (%d)MB, free internal mem: (%d)MB",
1179                 reqd_size, free_internal_mem);
1180
1181         /* if avaialalbe free memory in internal storage is
1182          * less than required size, return error
1183          */
1184         if (reqd_size > free_internal_mem) {
1185                 _E("innsufficient memory in internal storage" \
1186                         " for application installation (%d)", ret);
1187                 return APP2EXT_ERROR_MMC_INSUFFICIENT_MEMORY;
1188         }
1189
1190 #ifdef TIZEN_FEATURE_APP2SD_DMCRYPT_ENCRYPTION
1191         device_node =
1192                 _app2sd_find_associated_dmcrypt_device_node(pkgid, uid);
1193 #else
1194         device_node = _app2sd_find_associated_device_node(loopback_device);
1195 #endif
1196         if (NULL == device_node) {
1197                 /* do loopback setup */
1198 #ifdef TIZEN_FEATURE_APP2SD_DMCRYPT_ENCRYPTION
1199                 ret = _app2sd_dmcrypt_open_device(pkgid, loopback_device,
1200                         false, uid, &device_node);
1201                 if (ret) {
1202                         _E("dmcrypt open device error(%d)", ret);
1203                         return APP2EXT_ERROR_OPEN_DMCRYPT_DEVICE;
1204                 }
1205 #else
1206                 device_node = _app2sd_do_loopback_encryption_setup(pkgid,
1207                         loopback_device, uid);
1208                 if (device_node == NULL) {
1209                         _E("loopback encryption setup failed");
1210                         return APP2EXT_ERROR_DO_LOSETUP;
1211                 }
1212 #endif
1213                 /* do mounting */
1214                 ret = _app2sd_mount_app_content(application_path,
1215                         pkgid, device_node, MOUNT_TYPE_RW,
1216                         dir_list, APP2SD_MOVE_APP_TO_PHONE, uid);
1217                 if (ret) {
1218                         _E("mount failed");
1219                         ret = APP2EXT_ERROR_MOUNT_PATH;
1220                         goto ERR;
1221                 }
1222         } else {
1223                 /* do re-mounting */
1224                 ret = _app2sd_mount_app_content(application_path,
1225                         pkgid, device_node, MOUNT_TYPE_RW_REMOUNT,
1226                         dir_list, APP2SD_MOVE_APP_TO_PHONE, uid);
1227                 if (ret) {
1228                         _E("re-mount failed");
1229                         ret = APP2EXT_ERROR_MOUNT_PATH;
1230                         goto ERR;
1231                 }
1232         }
1233
1234         snprintf(app_mmc_path, sizeof(app_mmc_path), "%s/.mmc",
1235                 application_path);
1236         snprintf(app_archive_path, sizeof(app_archive_path), "%s/.archive",
1237                 application_path);
1238
1239         ret = mkdir(app_archive_path, mode);
1240         if (ret) {
1241                 if (errno != EEXIST) {
1242                         _E("unable to create directory for archiving," \
1243                                 " error(%d)", errno);
1244                         ret = APP2EXT_ERROR_CREATE_DIRECTORY;
1245                         goto ERR;
1246                 }
1247         }
1248
1249         list = g_list_first(dir_list);
1250         while (list) {
1251                 dir_detail = (app2ext_dir_details *)list->data;
1252                 if (dir_detail && dir_detail->name
1253                         && dir_detail->type == APP2EXT_DIR_RO) {
1254                         /* archiving code */
1255                         memset(temp_dir_path, '\0', sizeof(temp_dir_path));
1256                         snprintf(temp_dir_path, sizeof(temp_dir_path),
1257                                  "%s/%s", app_mmc_path,
1258                                  dir_detail->name);
1259                         _D("mmc2archive, temp_dir_path(%s)", temp_dir_path);
1260                         ret = _app2sd_copy_dir(temp_dir_path,
1261                                      app_archive_path);
1262                         if (ret) {
1263                                 if (ret == APP2EXT_ERROR_ACCESS_FILE) {
1264                                         _E("unable to access (%s)",
1265                                                 temp_dir_path);
1266                                 } else {
1267                                         strerror_r(errno,
1268                                                 err_buf, sizeof(err_buf));
1269                                         _E("unable to copy from (%s) to (%s),"
1270                                                 " error is (%s)",
1271                                                 temp_dir_path,
1272                                                 app_archive_path, err_buf);
1273                                 }
1274                                 goto ERR;
1275                         }
1276
1277                         /* delete the symbolic link files [bin, lib, res]*/
1278                         memset(temp_dir_path, '\0', sizeof(temp_dir_path));
1279                         snprintf(temp_dir_path, sizeof(temp_dir_path),
1280                                  "%s/%s", application_path,
1281                                  dir_detail->name);
1282                         _D("unlink, temp_dir_path(%s)", temp_dir_path);
1283                         ret = unlink(temp_dir_path);
1284                         if (ret) {
1285                                 if (errno == ENOENT) {
1286                                         _W("directory (%s) does not exist",
1287                                                 temp_dir_path);
1288                                 } else {
1289                                         _E("unable to remove the symbolic link file (%s)," \
1290                                                 " it is already unlinked",
1291                                                 temp_dir_path);
1292                                         goto ERR;
1293                                 }
1294                         }
1295
1296                         /* Copy content to destination */
1297                         memset(temp_dir_path, '\0', sizeof(temp_dir_path));
1298                         snprintf(temp_dir_path, sizeof(temp_dir_path),
1299                                 "%s/%s", app_archive_path,
1300                                 dir_detail->name);
1301                         _D("archive2app, temp_dir_path(%s)", temp_dir_path);
1302                         ret = _app2sd_copy_dir(temp_dir_path, application_path);
1303                         if (ret) {
1304                                 if (ret == APP2EXT_ERROR_ACCESS_FILE) {
1305                                         _E("unable to access (%s)",
1306                                                 temp_dir_path);
1307                                 } else {
1308                                         strerror_r(errno,
1309                                                 err_buf, sizeof(err_buf));
1310                                         _E("unable to copy from (%s) to (%s) " \
1311                                                 ", error is (%s)",
1312                                                 temp_dir_path,
1313                                                 application_path, err_buf);
1314                                 }
1315                                 goto ERR;
1316                         }
1317                 }
1318                 list = g_list_next(list);
1319         }
1320
1321         _D("copying file completed");
1322         ret = _app2sd_unmount_app_content(application_path);
1323         if (ret)
1324                 _E("unable to unmount SD directory for app (%s)",
1325                      pkgid);
1326
1327 #ifdef TIZEN_FEATURE_APP2SD_DMCRYPT_ENCRYPTION
1328         ret = _app2sd_dmcrypt_close_device(pkgid, uid);
1329         if (ret)
1330                 _E("close dmcrypt device error(%d)", ret);
1331 #else
1332         ret = _app2sd_remove_loopback_encryption_setup(loopback_device);
1333         if (ret)
1334                 _E("unable to detach loopback setup for (%s)",
1335                      pkgid);
1336 #endif
1337
1338         ret = _app2sd_delete_loopback_device(loopback_device);
1339         if (ret)
1340                 _E("unable to delete the loopback device for (%s)",
1341                      pkgid);
1342
1343         ret = _app2sd_delete_directory(app_mmc_path);
1344         if (ret)
1345                 _E("unable to delete (%s)", app_mmc_path);
1346
1347         ret = _app2sd_delete_directory(app_archive_path);
1348         if (ret)
1349                 _E("unable to delete (%s)", app_archive_path);
1350
1351         /* remove passwrd from DB */
1352         ret = _app2sd_initialize_db();
1353         if (ret)
1354                 _E("app2sd db initialize failed");
1355
1356         ret = _app2sd_remove_info_from_db(pkgid, uid);
1357         if (ret)
1358                 _E("cannot remove info from db");
1359
1360         return APP2EXT_SUCCESS;
1361
1362 ERR:
1363         if (device_node) {
1364                 free(device_node);
1365                 device_node = NULL;
1366         }
1367
1368         return ret;
1369 }
1370
1371 int _app2sd_usr_move_app(const char *pkgid, app2ext_move_type move_type,
1372                 GList *dir_list, uid_t uid, char *mmc_path, char **image_path)
1373 {
1374         int ret = APP2EXT_SUCCESS;
1375
1376         switch (move_type) {
1377         case APP2EXT_MOVE_TO_EXT:
1378                 ret = _app2sd_move_app_to_external(pkgid, dir_list,
1379                         uid, mmc_path, image_path);
1380                 if (ret) {
1381                         _E("move app to external memory failed(%d)", ret);
1382                         return ret;
1383                 }
1384                 break;
1385         case APP2EXT_MOVE_TO_PHONE:
1386                 ret = _app2sd_move_app_to_internal(pkgid, dir_list,
1387                         uid, mmc_path);
1388                 if (ret) {
1389                         _E("move app to internal memory failed(%d)", ret);
1390                         return ret;
1391                 }
1392                 break;
1393         default:
1394                 _E("invalid argument");
1395                 return APP2EXT_ERROR_INVALID_ARGUMENTS;
1396         }
1397
1398         return ret;
1399 }
1400
1401 int _app2sd_copy_ro_content(const char *src, const char *dest, GList *dir_list)
1402 {
1403         char path[FILENAME_MAX] = { 0, };
1404         int ret = APP2EXT_SUCCESS;
1405         GList *list = NULL;
1406         app2ext_dir_details *dir_detail = NULL;
1407
1408         list = g_list_first(dir_list);
1409         while (list) {
1410                 dir_detail = (app2ext_dir_details *)list->data;
1411                 if (dir_detail && dir_detail->name
1412                         && dir_detail->type == APP2EXT_DIR_RO) {
1413                         memset((void *)&path, '\0', sizeof(path));
1414                         snprintf(path, sizeof(path), "%s/%s", src,
1415                                  dir_detail->name);
1416                         ret = _app2sd_copy_dir(path, dest);
1417                         if (ret) {
1418                                 if (ret == APP2EXT_ERROR_ACCESS_FILE) {
1419                                         _E("unable to access (%s)", path);
1420                                 } else {
1421                                         _E("unable to copy from (%s) " \
1422                                                 "to (%s), errno is (%d)",
1423                                                 path, dest, errno);
1424                                         return APP2EXT_ERROR_MOVE;
1425                                 }
1426                         }
1427                 }
1428                 list = g_list_next(list);
1429         }
1430
1431         return APP2EXT_SUCCESS;
1432 }
1433
1434 int _app2sd_duplicate_device(const char *pkgid,
1435                 const char *loopback_device,
1436                 const char *temp_pkgid,
1437                 const char *temp_application_path,
1438                 const char *temp_loopback_device,
1439                 GList *dir_list, char *dev_node, int size,
1440                 uid_t uid)
1441 {
1442         int ret = 0;
1443         int err_res = 0;
1444 #if !defined(TIZEN_FEATURE_APP2SD_DMCRYPT_ENCRYPTION)
1445         char *devi = NULL;
1446         char *result = NULL;
1447         char *passwd = NULL;
1448 #endif
1449
1450         /* create a new loopback device */
1451         ret = _app2sd_create_loopback_device(temp_pkgid,
1452                 temp_loopback_device, (size + PKG_BUF_SIZE));
1453         if (ret) {
1454                 _E("package already present");
1455                 return ret;
1456         }
1457
1458         /* perform loopback encryption setup */
1459 #ifdef TIZEN_FEATURE_APP2SD_DMCRYPT_ENCRYPTION
1460         dev_node = _app2sd_dmcrypt_duplicate_encryption_setup(pkgid,
1461                 temp_loopback_device, uid);
1462         if (!dev_node) {
1463                 _E("dmcrypt duplicate encryption setup failed");
1464                 _app2sd_delete_loopback_device(temp_loopback_device);
1465                 return APP2EXT_ERROR_SETUP_DMCRYPT_DEVICE;
1466         }
1467 #else
1468         /* get password for loopback encryption */
1469         ret = _app2sd_initialize_db();
1470         if (ret) {
1471                 _E("app2sd db initialize failed");
1472                 return APP2EXT_ERROR_DB_INITIALIZE;
1473         }
1474
1475         if ((passwd = _app2sd_get_password_from_db(pkgid, uid)) == NULL) {
1476                 passwd = (char *)_app2sd_generate_password();
1477                 if (NULL == passwd) {
1478                         _E("unable to generate password");
1479                         return APP2EXT_ERROR_PASSWD_GENERATION;
1480                 } else {
1481                         if ((ret = _app2sd_set_info_in_db(pkgid,
1482                                 passwd, loopback_device, uid)) < 0) {
1483                                 _E("unable to save info");
1484                                 free(passwd);
1485                                 passwd = NULL;
1486                                 return APP2EXT_ERROR_SQLITE_REGISTRY;
1487                         }
1488                 }
1489         }
1490
1491         dev_node = _app2sd_do_loopback_duplicate_encryption_setup(pkgid,
1492                 temp_pkgid, temp_loopback_device, passwd, uid);
1493         if (!dev_node) {
1494                 _E("losetup failed, device node is (%s)", dev_node);
1495                 _app2sd_delete_loopback_device(temp_loopback_device);
1496                 free(passwd);
1497                 passwd = NULL;
1498                 return APP2EXT_ERROR_DO_LOSETUP;
1499         }
1500         free(passwd);
1501         passwd = NULL;
1502         _D("duplicate setup SUCCESS");
1503
1504         /* check whether loopback device is associated with
1505          * device node or not
1506          */
1507         devi = _app2sd_find_associated_device_node(temp_loopback_device);
1508         if (devi == NULL) {
1509                 _E("finding associated device node failed");
1510                 err_res = APP2EXT_ERROR_DO_LOSETUP;
1511                 goto FINISH_OFF;
1512         }
1513         _D("losetup SUCCESS");
1514 #endif
1515
1516         /* format the loopback file system */
1517         ret = _app2sd_create_file_system(dev_node);
1518         if (ret) {
1519                 _E("creating fs failed");
1520                 err_res = APP2EXT_ERROR_CREATE_FS;
1521                 goto FINISH_OFF;
1522         }
1523         _D("create filesystem SUCCESS");
1524
1525         /* do mounting for new dev*/
1526         ret = _app2sd_mount_app_content(temp_application_path, pkgid,
1527                 dev_node, MOUNT_TYPE_RW, dir_list,
1528                 APP2SD_PRE_UPGRADE, uid);
1529         if (ret) {
1530                 _E("remount failed");
1531                 err_res = APP2EXT_ERROR_MOUNT_PATH;
1532                 goto FINISH_OFF;
1533         }
1534
1535 #if !defined(TIZEN_FEATURE_APP2SD_DMCRYPT_ENCRYPTION)
1536         if (devi) {
1537                 free(devi);
1538                 devi = NULL;
1539         }
1540 #endif
1541
1542         return APP2EXT_SUCCESS;
1543
1544 FINISH_OFF:
1545         if (dev_node) {
1546 #ifdef TIZEN_FEATURE_APP2SD_DMCRYPT_ENCRYPTION
1547                 ret = _app2sd_dmcrypt_close_device(temp_pkgid, uid);
1548                 if (ret)
1549                         _E("close dmcrypt device error(%d)", ret);
1550 #else
1551                 result = _app2sd_detach_loop_device(dev_node);
1552                 if (result) {
1553                         free(result);
1554                         result = NULL;
1555                 }
1556 #endif
1557                 _app2sd_delete_loopback_device(temp_loopback_device);
1558                 free(dev_node);
1559                 dev_node = NULL;
1560         }
1561
1562         return err_res;
1563 }
1564
1565 int _app2sd_update_loopback_device_size(const char *pkgid,
1566                 const char *loopback_device,
1567                 const char *application_path,
1568                 const char *temp_pkgid,
1569                 const char *temp_loopback_device,
1570                 const char *temp_application_path,
1571                 int size, GList *dir_list,
1572                 uid_t uid)
1573 {
1574         int ret = 0;
1575         char *device_node = NULL;
1576         char *old_device_node = NULL;
1577         int err_res = 0;
1578         char app_mmc_path[FILENAME_MAX] = { 0, };
1579         char temp_app_mmc_path[FILENAME_MAX] = { 0, };
1580
1581         ret = _app2sd_duplicate_device(pkgid, loopback_device,
1582                 temp_pkgid, temp_application_path, temp_loopback_device,
1583                 dir_list, device_node, size, uid);
1584         if (ret) {
1585                 _E("creating duplicate device failed");
1586                 return ret;
1587         }
1588
1589         /* get the associated device node for SD card applicatione */
1590 #ifdef TIZEN_FEATURE_APP2SD_DMCRYPT_ENCRYPTION
1591         old_device_node =
1592                 _app2sd_find_associated_dmcrypt_device_node(pkgid, uid);
1593 #else
1594         old_device_node = _app2sd_find_associated_device_node(loopback_device);
1595 #endif
1596         if (NULL == old_device_node) {
1597                 /* do loopback setup */
1598 #ifdef TIZEN_FEATURE_APP2SD_DMCRYPT_ENCRYPTION
1599                 ret = _app2sd_dmcrypt_open_device(pkgid, loopback_device,
1600                         false, uid, &old_device_node);
1601                 if (ret) {
1602                         _E("dmcrypt open device error");
1603                         err_res = APP2EXT_ERROR_OPEN_DMCRYPT_DEVICE;
1604                         goto FINISH_OFF;
1605                 }
1606 #else
1607                 old_device_node = _app2sd_do_loopback_encryption_setup(pkgid,
1608                         loopback_device, uid);
1609                 if (old_device_node == NULL) {
1610                         _E("loopback encryption setup failed");
1611                         err_res = APP2EXT_ERROR_DO_LOSETUP;
1612                         goto FINISH_OFF;
1613                 }
1614 #endif
1615                 /* do mounting */
1616                 ret = _app2sd_mount_app_content(application_path, pkgid,
1617                         old_device_node, MOUNT_TYPE_RW, dir_list,
1618                         APP2SD_PRE_UPGRADE, uid);
1619                 if (ret) {
1620                         _E("remount failed");
1621                         err_res = APP2EXT_ERROR_MOUNT_PATH;
1622                 }
1623         } else {
1624                 /* do re-mounting */
1625                 ret = _app2sd_mount_app_content(application_path, pkgid,
1626                         old_device_node, MOUNT_TYPE_RW_REMOUNT, dir_list,
1627                         APP2SD_PRE_UPGRADE, uid);
1628                 if (ret) {
1629                         _E("remount failed");
1630                         err_res = APP2EXT_ERROR_MOUNT_PATH;
1631                 }
1632         }
1633
1634         snprintf(app_mmc_path, sizeof(app_mmc_path),
1635                  "%s/.mmc", application_path);
1636         snprintf(temp_app_mmc_path, sizeof(temp_app_mmc_path),
1637                 "%s/.mmc", temp_application_path);
1638
1639         ret = _app2sd_copy_ro_content(app_mmc_path,
1640                 temp_app_mmc_path, dir_list);
1641         if (ret) {
1642                 _E("copy ro content failed");
1643                 err_res = ret;
1644         }
1645
1646         ret = _app2sd_unmount_app_content(application_path);
1647         if (ret) {
1648                 _E("unable to unmount the SD application");
1649                 err_res = APP2EXT_ERROR_UNMOUNT;
1650         }
1651
1652         ret = _app2sd_unmount_app_content(temp_application_path);
1653         if (ret) {
1654                 _E("unable to unmount the SD application");
1655                 err_res = APP2EXT_ERROR_UNMOUNT;
1656                 goto FINISH_OFF;
1657         }
1658
1659 #ifdef TIZEN_FEATURE_APP2SD_DMCRYPT_ENCRYPTION
1660         ret = _app2sd_dmcrypt_close_device(pkgid, uid);
1661         if (ret) {
1662                 _E("close dmcrypt device error(%d)", ret);
1663                 err_res = APP2EXT_ERROR_CLOSE_DMCRYPT_DEVICE;
1664                 goto FINISH_OFF;
1665         }
1666
1667         ret = _app2sd_dmcrypt_close_device(temp_pkgid, uid);
1668         if (ret) {
1669                 _E("close dmcrypt device error(%d)", ret);
1670                 err_res = APP2EXT_ERROR_CLOSE_DMCRYPT_DEVICE;
1671                 goto FINISH_OFF;
1672         }
1673 #else
1674         ret = _app2sd_remove_loopback_encryption_setup(loopback_device);
1675         if (ret) {
1676                 _E("unable to remove loopback setup");
1677                 err_res = APP2EXT_ERROR_DELETE_LOOPBACK_DEVICE;
1678         }
1679
1680         ret = _app2sd_remove_loopback_encryption_setup(temp_loopback_device);
1681         if (ret) {
1682                 _E("unable to remove loopback setup");
1683                 err_res = APP2EXT_ERROR_DELETE_LOOPBACK_DEVICE;
1684                 goto FINISH_OFF;
1685         }
1686 #endif
1687
1688         ret = _app2sd_delete_directory(loopback_device);
1689         if (ret) {
1690                 _E("unable to delete (%s)", loopback_device);
1691                 err_res = APP2EXT_ERROR_DELETE_DIRECTORY;
1692                 goto FINISH_OFF;
1693         }
1694
1695         ret = _app2sd_rename_dir(temp_loopback_device, loopback_device);
1696         if (ret) {
1697                 _E("unable to rename (%s)", temp_loopback_device);
1698                 err_res = APP2EXT_ERROR_MOVE;
1699                 goto FINISH_OFF;
1700         }
1701
1702         ret = _app2sd_delete_directory(temp_application_path);
1703         if (ret) {
1704                 _E("unable to delete (%s)", temp_application_path);
1705                 err_res = APP2EXT_ERROR_DELETE_DIRECTORY;
1706                 goto FINISH_OFF;
1707         }
1708
1709         return APP2EXT_SUCCESS;
1710
1711 FINISH_OFF:
1712         if (old_device_node) {
1713                 free(old_device_node);
1714                 old_device_node = NULL;
1715         }
1716
1717 #ifdef TIZEN_FEATURE_APP2SD_DMCRYPT_ENCRYPTION
1718         ret = _app2sd_dmcrypt_close_device(pkgid, uid);
1719         if (ret)
1720                 _E("close dmcrypt device error(%d)", ret);
1721
1722         ret = _app2sd_dmcrypt_close_device(temp_pkgid, uid);
1723
1724         if (ret)
1725                 _E("close dmcrypt device error(%d)", ret);
1726 #else
1727         ret = _app2sd_remove_loopback_encryption_setup(loopback_device);
1728         if (ret)
1729                 _E("unable to remove loopback setup");
1730
1731         ret = _app2sd_remove_loopback_encryption_setup(temp_loopback_device);
1732         if (ret)
1733                 _E("unable to remove loopback setup");
1734 #endif
1735
1736         _app2sd_delete_loopback_device(temp_loopback_device);
1737
1738         ret = _app2sd_delete_directory(temp_application_path);
1739         if (ret)
1740                 _E("unable to delete (%s)", temp_application_path);
1741
1742         return err_res;
1743 }
1744
1745 int _app2sd_force_clean(const char *pkgid, const char *application_path,
1746                 const char *loopback_device, uid_t uid)
1747 {
1748         int ret = APP2EXT_SUCCESS;
1749
1750         /* unmount the loopback encrypted pseudo device from the application installation path */
1751         ret = _app2sd_unmount_app_content(application_path);
1752         if (ret)
1753                 _W("unable to unmount the app content (%d)", ret);
1754
1755         /* detach the loopback encryption setup for the application */
1756 #ifdef TIZEN_FEATURE_APP2SD_DMCRYPT_ENCRYPTION
1757         ret = _app2sd_dmcrypt_close_device(pkgid, uid);
1758         if (ret)
1759                 _W("close dmcrypt device error (%d)", ret);
1760 #else
1761         ret = _app2sd_remove_all_loopback_encryption_setups(loopback_device);
1762         if (ret)
1763                 _W("unable to detach the loopback encryption setup for the application");
1764 #endif
1765
1766         /* delete the loopback device from the SD card */
1767         ret = _app2sd_delete_loopback_device(loopback_device);
1768         if (ret)
1769                 _W("unable to detach the loopback encryption setup for the application");
1770
1771         /* delete symlink */
1772         _app2sd_delete_symlink(application_path);
1773
1774         /* remove passwrd from DB */
1775         ret = _app2sd_initialize_db();
1776         if (ret)
1777                 _W("app2sd db initialize failed");
1778
1779         ret = _app2sd_remove_info_from_db(pkgid, uid);
1780         if (ret)
1781                 _W("cannot remove info from db");
1782
1783
1784         return ret;
1785 }