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
  30 /*
  31         Get compat path from origin Multi-user path
  32         from TZ_USER_CONTENT/.. to /opt/usr/media/..
  33         Input should be normalized path like /opt/usr/home/owner/media (TODO: internal normalization)
  34
  35         Why this API should be provided?
  36         In multi-user environment, each user has own compat content direcotry.(/opt/usr/media)
  37         However, although system daemon operates real path,
  38                 system daemon needs to provide compat path to App if the real path is converted.
  39
  40         Usage:
  41                 #include <storage-internal.h>
  42
  43                 char dest[100];
  44                 if(storage_get_compat_internal_path(src, sizeof(dest), dest) < 0)
  45                         // cannot convert. use src path
  46                 else
  47                         // can convert. use dest path
  48  */
  49 API int storage_get_compat_internal_path(const char* origin, int len, char* compat)
  50 {
  51         int r = -1;
  52         int str_len;
  53         const char* str;
  54
  55         if (!compat || !origin) {
  56                 _E("Invalid parameter");
  57                 return -1;
  58         }
  59
  60         // this API works on place where compat path is bind-mounted
  61         if (!is_compat_bind_mount()) {
  62                 _E("No compat bind mount");
  63                 return -1;
  64         }
  65
  66         str = tzplatform_getenv(TZ_USER_CONTENT);
  67         str_len = strlen(str);
  68         if (strncmp(origin, str, str_len) != 0) {
  69                 _E("Failed to match TZ_USER_CONTENT");
  70                 return -1;
  71         }
  72
  73         r = snprintf(compat, len, "%s%s", COMPAT_DIR, origin + str_len);
  74         if (r < 0) {
  75                 _E("Failed to create new path");
  76                 return -1;
  77         }
  78
  79         return 0;
  80 }
  81
  82 /*
  83         Get Multi-user path from compat path
  84         from /opt/usr/media/.. to TZ_USER_CONTENT/..
  85         Input should be normalized path like /opt/usr/media (TODO: internal normalization)
  86
  87         Why this API should be provided?
  88         In multi-user environment, each user has own compat content direcotry.(/opt/usr/media)
  89         However, although some APIs send the compat path to system daemon,
  90                 system daemon should access real path.
  91
  92         Usage:
  93                 #include <storage-internal.h>
  94
  95                 char dest[100];
  96                 if(storage_get_origin_internal_path(src, sizeof(dest), dest) < 0)
  97                         // cannot convert. use src path
  98                 else
  99                         // can convert. use dest path
 100 */
 101 API int storage_get_origin_internal_path(const char* compat, int len, char* origin)
 102 {
 103         int r;
 104         int compat_len;
 105
 106         if (!compat || !origin) {
 107                 _E("Invalid parameter");
 108                 return -1;
 109         }
 110
 111         // this API works on place where compat path is bind-mounted
 112         if (!is_compat_bind_mount()) {
 113                 _E("no compat bind mount");
 114                 return -1;
 115         }
 116
 117         compat_len = strlen(COMPAT_DIR);
 118         if (strncmp(compat, COMPAT_DIR, compat_len) != 0) {
 119                 _E("failed to match COMPAT_DIR");
 120                 return -1;
 121         }
 122
 123         r = snprintf(origin, len, "%s%s", tzplatform_getenv(TZ_USER_CONTENT), compat + compat_len);
 124         if (r < 0) {
 125                 _E("failed to create new path");
 126                 return -1;
 127         }
 128
 129         return 0;
 130 }
 131
 132 API int storage_get_primary_sdcard(int *storage_id, char **path)
 133 {
 134         GVariant *result;
 135         storage_ext_device info;
 136
 137         if (!storage_id || !path)
 138                 return STORAGE_ERROR_INVALID_PARAMETER;
 139
 140         result = dbus_method_call_sync(STORAGE_EXT_BUS_NAME,
 141                         STORAGE_EXT_PATH_MANAGER,
 142                         STORAGE_EXT_IFACE_MANAGER,
 143                         "GetMmcPrimary",
 144                         NULL);
 145         if (!result) {
 146                 _E("Failed to get primary sdcard partition"); //LCOV_EXCL_LINE
 147                 return STORAGE_ERROR_OPERATION_FAILED; //LCOV_EXCL_LINE
 148         }
 149
 150         g_variant_get(result, "(issssssisibii)",
 151                         &info.type, &info.devnode, &info.syspath,
 152                         &info.fs_usage, &info.fs_type,
 153                         &info.fs_version, &info.fs_uuid,
 154                         &info.readonly, &info.mount_point,
 155                         &info.state, &info.primary,
 156                         &info.flags, &info.storage_id);
 157
 158         g_variant_unref(result);
 159
 160         if (info.storage_id < 0)
 161                 return STORAGE_ERROR_NO_DEVICE;
 162
 163         *path = strdup(info.mount_point);
 164         if (*path == NULL)
 165                 return STORAGE_ERROR_OUT_OF_MEMORY;
 166
 167         *storage_id = info.storage_id;
 168
 169         return STORAGE_ERROR_NONE;
 170 }
 171
 172 API int storage_get_type_dev(int storage_id, storage_type_e *type, storage_dev_e *dev)
 173 {
 174         storage_ext_device *ext_dev;
 175         int ret;
 176
 177         if (storage_id < 0) {
 178                 _E("Invalid parameger");
 179                 return STORAGE_ERROR_NOT_SUPPORTED;
 180         }
 181
 182         if (!type) {
 183                 _E("Invalid parameger");
 184                 return STORAGE_ERROR_INVALID_PARAMETER;
 185         }
 186
 187         if (!dev) {
 188                 _E("Invalid parameger");
 189                 return STORAGE_ERROR_INVALID_PARAMETER;
 190         }
 191
 192         ret = storage_get_type(storage_id, type);
 193         if (ret != STORAGE_ERROR_NONE) {
 194                 _E("Failed to get storage type: %d", ret);
 195                 return ret;
 196         }
 197
 198         ext_dev = calloc(1, sizeof(storage_ext_device));
 199         if (!ext_dev) {
 200 //LCOV_EXCL_START System Error
 201                 _E("calloc failed");
 202                 return STORAGE_ERROR_OUT_OF_MEMORY;
 203 //LCOV_EXCL_STOP
 204         }
 205
 206         ret = storage_ext_get_device_info(storage_id, ext_dev);
 207         if (ret < 0) {
 208                 _E("Cannot get the storage with id (%d, ret:%d)", storage_id, ret); //LCOV_EXCL_LINE
 209                 ret = STORAGE_ERROR_NOT_SUPPORTED;
 210                 goto out;
 211         }
 212
 213         if (ext_dev->type == STORAGE_EXT_SCSI)
 214                 *dev = STORAGE_DEV_EXT_USB_MASS_STORAGE;
 215         else if (ext_dev->type == STORAGE_EXT_MMC)
 216                 *dev = STORAGE_DEV_EXT_SDCARD;
 217         ret = STORAGE_ERROR_NONE;
 218         _I("type: %d(internal:0, external:1) dev: %d(sdcard: 1001, usb: 1002)", *type, *dev);
 219
 220 out:
 221         storage_ext_release_device(&ext_dev);
 222         return ret;
 223 }