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      1 /*
      2  * Copyright (C) 2012 The Android Open Source Project
      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 #ifndef __CORE_FS_MGR_PRIV_H
     18 #define __CORE_FS_MGR_PRIV_H
     19 
     20 #include <cutils/klog.h>
     21 #include <fs_mgr.h>
     22 
     23 #define INFO(x...)    KLOG_INFO("fs_mgr", x)
     24 #define ERROR(x...)   KLOG_ERROR("fs_mgr", x)
     25 
     26 #define CRYPTO_TMPFS_OPTIONS "size=256m,mode=0771,uid=1000,gid=1000"
     27 
     28 #define WAIT_TIMEOUT 20
     29 
     30 /* fstab has the following format:
     31  *
     32  * Any line starting with a # is a comment and ignored
     33  *
     34  * Any blank line is ignored
     35  *
     36  * All other lines must be in this format:
     37  *   <source>  <mount_point> <fs_type> <mount_flags> <fs_options> <fs_mgr_options>
     38  *
     39  *   <mount_flags> is a comma separated list of flags that can be passed to the
     40  *                 mount command.  The list includes noatime, nosuid, nodev, nodiratime,
     41  *                 ro, rw, remount, defaults.
     42  *
     43  *   <fs_options> is a comma separated list of options accepted by the filesystem being
     44  *                mounted.  It is passed directly to mount without being parsed
     45  *
     46  *   <fs_mgr_options> is a comma separated list of flags that control the operation of
     47  *                     the fs_mgr program.  The list includes "wait", which will wait till
     48  *                     the <source> file exists, and "check", which requests that the fs_mgr
     49  *                     run an fscheck program on the <source> before mounting the filesystem.
     50  *                     If check is specifed on a read-only filesystem, it is ignored.
     51  *                     Also, "encryptable" means that filesystem can be encrypted.
     52  *                     The "encryptable" flag _MUST_ be followed by a = and a string which
     53  *                     is the location of the encryption keys.  It can either be a path
     54  *                     to a file or partition which contains the keys, or the word "footer"
     55  *                     which means the keys are in the last 16 Kbytes of the partition
     56  *                     containing the filesystem.
     57  *
     58  * When the fs_mgr is requested to mount all filesystems, it will first mount all the
     59  * filesystems that do _NOT_ specify check (including filesystems that are read-only and
     60  * specify check, because check is ignored in that case) and then it will check and mount
     61  * filesystem marked with check.
     62  *
     63  */
     64 
     65 #define MF_WAIT         0x1
     66 #define MF_CHECK        0x2
     67 #define MF_CRYPT        0x4
     68 #define MF_NONREMOVABLE 0x8
     69 #define MF_VOLDMANAGED  0x10
     70 #define MF_LENGTH       0x20
     71 #define MF_RECOVERYONLY 0x40
     72 #define MF_SWAPPRIO     0x80
     73 #define MF_ZRAMSIZE     0x100
     74 #define MF_VERIFY       0x200
     75 #define MF_FORCECRYPT   0x400
     76 #define MF_NOEMULATEDSD 0x800 /* no emulated sdcard daemon, sd card is the only
     77                                  external storage */
     78 
     79 #define DM_BUF_SIZE 4096
     80 
     81 #endif /* __CORE_FS_MGR_PRIV_H */
     82 
     83