src/storage-inhouse.c

   1 /*
   2  * Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the License);
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an AS IS BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17
  18 #include <stdio.h>
  19 #include <stdlib.h>
  20 #include <string.h>
  21 #include <errno.h>
  22 #include <tzplatform_config.h>
  23
  24 #include "common.h"
  25 #include "list.h"
  26 #include "log.h"
  27 #include "storage-internal.h"
  28 #include "storage-external-dbus.h"
  29 #include "storage-experimental.h"
  30
  31 /*
  32         Get compat path from origin Multi-user path
  33         from TZ_USER_CONTENT/.. to /opt/usr/media/..
  34         Input should be normalized path like /opt/usr/home/owner/media (TODO: internal normalization)
  35
  36         Why this API should be provided?
  37         In multi-user environment, each user has own compat content direcotry.(/opt/usr/media)
  38         However, although system daemon operates real path,
  39                 system daemon needs to provide compat path to App if the real path is converted.
  40
  41         Usage:
  42                 #include <storage-internal.h>
  43
  44                 char dest[100];
  45                 if(storage_get_compat_internal_path(src, sizeof(dest), dest) < 0)
  46                         // cannot convert. use src path
  47                 else
  48                         // can convert. use dest path
  49  */
  50 API int storage_get_compat_internal_path(const char* origin, int len, char* compat)
  51 {
  52         int r = -1;
  53         int str_len;
  54         const char* str;
  55
  56         if (!compat || !origin) {
  57                 _E("Invalid parameter");
  58                 return -1;
  59         }
  60
  61         // this API works on place where compat path is bind-mounted
  62         if (!is_compat_bind_mount()) {
  63                 _E("No compat bind mount");
  64                 return -1;
  65         }
  66
  67         str = tzplatform_getenv(TZ_USER_CONTENT);
  68         str_len = strlen(str);
  69         if (strncmp(origin, str, str_len) != 0) {
  70                 _E("Failed to match TZ_USER_CONTENT");
  71                 return -1;
  72         }
  73
  74         r = snprintf(compat, len, "%s%s", COMPAT_DIR, origin + str_len);
  75         if (r < 0) {
  76                 _E("Failed to create new path");
  77                 return -1;
  78         }
  79
  80         return 0;
  81 }
  82
  83 /*
  84         Get Multi-user path from compat path
  85         from /opt/usr/media/.. to TZ_USER_CONTENT/..
  86         Input should be normalized path like /opt/usr/media (TODO: internal normalization)
  87
  88         Why this API should be provided?
  89         In multi-user environment, each user has own compat content direcotry.(/opt/usr/media)
  90         However, although some APIs send the compat path to system daemon,
  91                 system daemon should access real path.
  92
  93         Usage:
  94                 #include <storage-internal.h>
  95
  96                 char dest[100];
  97                 if(storage_get_origin_internal_path(src, sizeof(dest), dest) < 0)
  98                         // cannot convert. use src path
  99                 else
 100                         // can convert. use dest path
 101 */
 102 API int storage_get_origin_internal_path(const char* compat, int len, char* origin)
 103 {
 104         int r;
 105         int compat_len;
 106
 107         if (!compat || !origin) {
 108                 _E("Invalid parameter");
 109                 return -1;
 110         }
 111
 112         // this API works on place where compat path is bind-mounted
 113         if (!is_compat_bind_mount()) {
 114                 _E("no compat bind mount");
 115                 return -1;
 116         }
 117
 118         compat_len = strlen(COMPAT_DIR);
 119         if (strncmp(compat, COMPAT_DIR, compat_len) != 0) {
 120                 _E("failed to match COMPAT_DIR");
 121                 return -1;
 122         }
 123
 124         r = snprintf(origin, len, "%s%s", tzplatform_getenv(TZ_USER_CONTENT), compat + compat_len);
 125         if (r < 0) {
 126                 _E("failed to create new path");
 127                 return -1;
 128         }
 129
 130         return 0;
 131 }
 132
 133 API int storage_get_primary_sdcard(int *storage_id, char **path)
 134 {
 135         GVariant *result;
 136         storage_ext_device info;
 137
 138         if (!storage_id || !path)
 139                 return STORAGE_ERROR_INVALID_PARAMETER;
 140
 141         result = dbus_method_call_sync(STORAGE_EXT_BUS_NAME,
 142                         STORAGE_EXT_PATH_MANAGER,
 143                         STORAGE_EXT_IFACE_MANAGER,
 144                         "GetMmcPrimary",
 145                         NULL);
 146         if (!result) {
 147                 _E("Failed to get primary sdcard partition"); //LCOV_EXCL_LINE
 148                 return STORAGE_ERROR_OPERATION_FAILED; //LCOV_EXCL_LINE
 149         }
 150
 151         g_variant_get(result, "(issssssisibii)",
 152                         &info.type, &info.devnode, &info.syspath,
 153                         &info.fs_usage, &info.fs_type,
 154                         &info.fs_version, &info.fs_uuid,
 155                         &info.readonly, &info.mount_point,
 156                         &info.state, &info.primary,
 157                         &info.flags, &info.storage_id);
 158
 159         g_variant_unref(result);
 160
 161         if (info.storage_id < 0)
 162                 return STORAGE_ERROR_NO_DEVICE;
 163
 164         *path = strdup(info.mount_point);
 165         if (*path == NULL)
 166                 return STORAGE_ERROR_OUT_OF_MEMORY;
 167
 168         *storage_id = info.storage_id;
 169
 170         return STORAGE_ERROR_NONE;
 171 }
 172
 173 API int storage_get_type_dev(int storage_id, storage_type_e *type, storage_dev_e *dev)
 174 {
 175         storage_ext_device *ext_dev;
 176         int ret;
 177
 178         if (storage_id < 0) {
 179                 _E("Invalid parameger");
 180                 return STORAGE_ERROR_NO_DEVICE;
 181         }
 182
 183         if (!type) {
 184                 _E("Invalid parameger");
 185                 return STORAGE_ERROR_INVALID_PARAMETER;
 186         }
 187
 188         if (!dev) {
 189                 _E("Invalid parameger");
 190                 return STORAGE_ERROR_INVALID_PARAMETER;
 191         }
 192
 193         ret = storage_get_type(storage_id, type);
 194         if (ret != STORAGE_ERROR_NONE) {
 195                 _E("Failed to get storage type: %d", ret);
 196                 return ret;
 197         }
 198         if (*type == STORAGE_TYPE_INTERNAL)
 199                 return STORAGE_ERROR_NONE;
 200
 201         ext_dev = calloc(1, sizeof(storage_ext_device));
 202         if (!ext_dev) {
 203 //LCOV_EXCL_START System Error
 204                 _E("calloc failed");
 205                 return STORAGE_ERROR_OUT_OF_MEMORY;
 206 //LCOV_EXCL_STOP
 207         }
 208
 209         ret = storage_ext_get_device_info(storage_id, ext_dev);
 210         if (ret < 0) {
 211                 _E("Cannot get the storage with id (%d, ret:%d)", storage_id, ret); //LCOV_EXCL_LINE
 212                 ret = STORAGE_ERROR_NO_DEVICE;
 213                 goto out;
 214         }
 215
 216         if (ext_dev->type == STORAGE_EXT_SCSI)
 217                 *dev = STORAGE_DEV_EXT_USB_MASS_STORAGE;
 218         else if (ext_dev->type == STORAGE_EXT_MMC)
 219                 *dev = STORAGE_DEV_EXT_SDCARD;
 220         ret = STORAGE_ERROR_NONE;
 221         _I("type: %d(internal:0, external:1) dev: %d(sdcard: 1001, usb: 1002)", *type, *dev);
 222
 223 out:
 224         storage_ext_release_device(&ext_dev);
 225         return ret;
 226 }