src/storage-internal.c

   1 /*
   2  * Copyright (c) 2011 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 <limits.h>
  23 #include <sys/statvfs.h>
  24 #include <tzplatform_config.h>
  25 #include <libmount.h>
  26
  27 #include "common.h"
  28 #include "log.h"
  29
  30 #ifndef __USE_FILE_OFFSET64
  31 int __WEAK__ storage_get_internal_memory_size(struct statvfs *buf);
  32 #else
  33 int __WEAK__ storage_get_internal_memory_size64(struct statvfs *buf);
  34 #endif
  35
  36 static int internal_get_state(void)
  37 {
  38         return STORAGE_STATE_MOUNTED;
  39 }
  40
  41 static int internal_get_space(unsigned long long *total, unsigned long long *available)
  42 {
  43         struct statvfs s;
  44         int ret;
  45
  46 #ifndef __USE_FILE_OFFSET64
  47         ret = storage_get_internal_memory_size(&s);
  48 #else
  49         ret = storage_get_internal_memory_size64(&s);
  50 #endif
  51         if (ret < 0)
  52                 return -EPERM;
  53
  54         if (total)
  55                 *total = (unsigned long long)s.f_frsize*s.f_blocks;
  56         if (available)
  57                 *available = (unsigned long long)s.f_bsize*s.f_bavail;
  58         return 0;
  59 }
  60
  61 static const char *internal_get_root(void)
  62 {
  63         const char *ret;
  64
  65         if (is_compat_bind_mount())
  66                 ret = COMPAT_DIR;
  67         else
  68                 ret = tzplatform_getenv(TZ_USER_CONTENT);
  69
  70         return ret;
  71 }
  72
  73 const struct storage_ops internal = {
  74         .type = STORAGE_TYPE_INTERNAL,
  75         .root = internal_get_root,
  76         .get_state = internal_get_state,
  77         .get_space = internal_get_space,
  78         .storage_id = 0,
  79 };
  80
  81 STORAGE_OPS_REGISTER(&internal)