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