안드로이드의 external storage(USB Mass Storage)에 NTFS 파일 시스템을 지원하기
android_4.2.2 (BUILD_ID=JDQ39E)
storage_list.xml에 item을 추가한다.
device/hardkernel/odroid/overlay/frameworks/base/core/res/res/xml/storage_list.xml
<storage android:mountPoint=
"/storage/usb1"
android:storageDescription="@string/storage_usb"
android:primary="false"
android:removable="true" />
USB Mass Storage를 연결 하면 발생하는 노드를 vold.fstab에 추가 한다.
device/hardkernel/odroid/conf/vold.fstab
dev_mount usb /storage/usb1 auto
/devices/platform/xxx
init.odroid.rc에 node를 만든다.
device/hardkernel/odroid/conf/init.odroid.rc
mkdir
/storage/usb1 0000 system system
system/vold를 수정 한다.
$ svn diff
Index: Volume.cpp
===================================================================
--- Volume.cpp
(revision 21)
+++ Volume.cpp
(working copy)
@@ -44,6 +44,7 @@
#include "VolumeManager.h"
#include "ResponseCode.h"
#include "Fat.h"
+#include "Ntfs.h"
#include "Process.h"
#include "cryptfs.h"
@@ -401,7 +402,13 @@
if (Fat::check(devicePath)) {
if (errno == ENODATA) {
SLOGW("%s does not contain a FAT filesystem\n", devicePath);
- continue;
+ if (Ntfs::doMount(devicePath, getMountpoint(), false, false, false,
+ 1000, 1015, 0702, false)) {
+ SLOGE("%s failed to mount via NTFS (%s)\n", devicePath, strerror(errno));
+ } else {
+ SLOGE("NTFS mounted");
+ continue;
+ }
}
errno = EIO;
/* Badness - abort the mount */
Index: Android.mk
===================================================================
--- Android.mk
(revision 21)
+++ Android.mk
(working copy)
@@ -12,6 +12,7 @@
Process.cpp \
Ext4.cpp \
Fat.cpp \
+ Ntfs.cpp \
Loop.cpp \
Devmapper.cpp \
ResponseCode.cpp \
Ntfs.h
1 /*
2 * Copyright (C) 2008 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 _NTFS_H
18 #define _NTFS_H
19
20 #include <unistd.h>
21
22 class Ntfs {
23 public:
24 static int doMount(const char *fsPath, const char *mountPoint,
25 bool ro, bool remount, bool executable,
26 int ownerUid, int ownerGid, int permMask,
27 bool createLost);
28 };
29
30 #endif
Ntfs.cpp
1 /*
2 * Copyright (C) 2008 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 #include <stdio.h>
18 #include <fcntl.h>
19 #include <unistd.h>
20 #include <errno.h>
21 #include <string.h>
22 #include <dirent.h>
23 #include <errno.h>
24 #include <fcntl.h>
25
26 #include <sys/types.h>
27 #include <sys/stat.h>
28 #include <sys/types.h>
29 #include <sys/mman.h>
30 #include <sys/mount.h>
31
32 #include <linux/kdev_t.h>
33
34 #define LOG_TAG "Vold"
35
36 #include <cutils/log.h>
37 #include <cutils/properties.h>
38
39 #include "Ntfs.h"
40
41 static char FSCK_MSDOS_PATH[] = "/system/bin/fsck_msdos";
42 static char MKDOSFS_PATH[] = "/system/bin/newfs_msdos";
43 extern "C" int logwrap(int argc, const char **argv, int background);
44 extern "C" int mount(const char *, const char *, const char *, unsigned long, const void *);
45
46 int Ntfs::doMount(const char *fsPath, const char *mountPoint,
47 bool ro, bool remount, bool executable,
48 int ownerUid, int ownerGid, int permMask, bool createLost) {
49 int rc;
50 unsigned long flags;
51 char mountData[255];
52
53 flags = MS_NODEV | MS_NOSUID | MS_DIRSYNC;
54
55 flags |= (executable ? 0 : MS_NOEXEC);
56 flags |= (ro ? MS_RDONLY : 0);
57 flags |= (remount ? MS_REMOUNT : 0);
58
59 /*
60 * Note: This is a temporary hack. If the sampling profiler is enabled,
61 * we make the SD card world-writable so any process can write snapshots.
62 *
63 * TODO: Remove this code once we have a drop box in system_server.
64 */
65 char value[PROPERTY_VALUE_MAX];
66 property_get("persist.sampling_profiler", value, "");
67 if (value[0] == '1') {
68 SLOGW("The SD card is world-writable because the"
69 " 'persist.sampling_profiler' system property is set to '1'.");
70 permMask = 0;
71 }
72
73 sprintf(mountData,
74 "utf8,uid=%d,gid=%d,fmask=%o,dmask=%o",
75 ownerUid, ownerGid, permMask, permMask);
76
77 rc = mount(fsPath, mountPoint, "ntfs", flags, mountData);
78
79 if (rc && errno == EROFS) {
80 SLOGE("%s appears to be a read only filesystem - retrying mount RO", fsPath);
81 flags |= MS_RDONLY;
82 rc = mount(fsPath, mountPoint, "ntfs", flags, mountData);
83 }
84
85 if (rc == 0 && createLost) {
86 char *lost_path;
87 asprintf(&lost_path, "%s/LOST.DIR", mountPoint);
88 if (access(lost_path, F_OK)) {
89 /*
90 * Create a LOST.DIR in the root so we have somewhere to put
91 * lost cluster chains (fsck_msdos doesn't currently do this)
92 */
93 if (mkdir(lost_path, 0755)) {
94 SLOGE("Unable to create LOST.DIR (%s)", strerror(errno));
95 }
96 }
97 free(lost_path);
98 }
99
100 return rc;
101 }
Ntfs는 read-only만 지원 됩니다.
shell@android:/ $ mount
rootfs / rootfs ro,relatime 0 0
tmpfs /dev tmpfs rw,nosuid,relatime,mode=755 0 0
devpts /dev/pts devpts rw,relatime,mode=600 0 0
proc /proc proc rw,relatime 0 0
sysfs /sys sysfs rw,relatime 0 0
none /acct cgroup rw,relatime,cpuacct 0 0
tmpfs /mnt/secure tmpfs rw,relatime,mode=700 0 0
tmpfs /mnt/asec tmpfs rw,relatime,mode=755,gid=1000 0 0
tmpfs /mnt/obb tmpfs rw,relatime,mode=755,gid=1000 0 0
none /dev/cpuctl cgroup rw,relatime,cpu 0 0
/dev/block/mmcblk0p2 /system ext4 ro,relatime,data=ordered 0 0
/dev/block/mmcblk0p4 /cache ext4 rw,nosuid,nodev,noatime,nomblk_io_submit,errors=panic,data=ordered 0 0
/dev/block/mmcblk0p3 /data ext4 rw,nosuid,nodev,noatime,nomblk_io_submit,discard,noauto_da_alloc,errors=panic,data=ordered 0 0
/sys/kernel/debug /sys/kernel/debug debugfs rw,relatime 0 0
/dev/block/vold/179:1 /mnt/sdcard vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0702,dmask=0702,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 00
/dev/block/vold/179:1 /mnt/secure/asec vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0702,dmask=0702,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount0
tmpfs /mnt/sdcard/.android_secure tmpfs ro,relatime,size=0k,mode=000 0 0
/dev/block/vold/179:9 /mnt/ext_sd vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0702,dmask=0702,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 00
/dev/block/vold/8:1 /storage/usb1 ntfs ro,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,umask=0702,nls=utf8,errors=continue,mft_zone_multiplier=1 0 0
shell@android:/ $
