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/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <errno.h>
#include <sys/mount.h>
#include "vold.h"
#include "volmgr.h"
#include "volmgr_vfat.h"
#include "logwrapper.h"
#define VFAT_DEBUG 0
static char FSCK_MSDOS_PATH[] = "/system/bin/dosfsck";
int vfat_identify(blkdev_t *dev)
{
#if VFAT_DEBUG
LOG_VOL("vfat_identify(%s):\n", dev->dev_fspath);
#endif
return 0; // XXX: Implement
}
int vfat_check(blkdev_t *dev)
{
int rc;
#if VFAT_DEBUG
LOG_VOL("vfat_check(%s):\n", dev->dev_fspath);
#endif
if (access(FSCK_MSDOS_PATH, X_OK)) {
LOGE("vfat_check(%s): %s not found (skipping checks)\n",
FSCK_MSDOS_PATH, dev->dev_fspath);
return 0;
}
#ifdef VERIFY_PASS
char *args[7];
args[0] = FSCK_MSDOS_PATH;
args[1] = "-v";
args[2] = "-V";
args[3] = "-w";
args[4] = "-p";
args[5] = dev->dev_fspath;
args[6] = NULL;
rc = logwrap(6, args);
#else
char *args[6];
args[0] = FSCK_MSDOS_PATH;
args[1] = "-v";
args[2] = "-w";
args[3] = "-p";
args[4] = dev->dev_fspath;
args[5] = NULL;
rc = logwrap(5, args);
#endif
if (rc == 0) {
LOG_VOL("Filesystem check completed OK\n");
return 0;
} else if (rc == 1) {
LOG_VOL("Filesystem check failed (general failure)\n");
return -EINVAL;
} else if (rc == 2) {
LOG_VOL("Filesystem check failed (invalid usage)\n");
return -EIO;
} else if (rc == 4) {
LOG_VOL("Filesystem check completed (errors fixed)\n");
} else {
LOG_VOL("Filesystem check failed (unknown exit code %d)\n", rc);
return -EIO;
}
return 0;
}
int vfat_mount(blkdev_t *dev, volume_t *vol)
{
int flags, rc;
#if VFAT_DEBUG
LOG_VOL("vfat_mount(%s, %s):\n", dev->dev_fspath, vol->mount_point);
#endif
flags = MS_NODEV | MS_NOEXEC | MS_NOSUID | MS_DIRSYNC;
rc = mount(dev->dev_fspath, vol->mount_point, "vfat", flags,
"utf8,uid=1000,gid=1000,fmask=711,dmask=700");
if (rc && errno == EROFS) {
LOGE("vfat_mount(%s, %s): Read only filesystem - retrying mount RO\n",
dev->dev_fspath, vol->mount_point);
flags |= MS_RDONLY;
rc = mount(dev->dev_fspath, vol->mount_point, "vfat", flags,
"utf8,uid=1000,gid=1000,fmask=711,dmask=700");
}
#if VFAT_DEBUG
LOG_VOL("vfat_mount(%s, %s): mount rc = %d\n", dev->dev_fspath,
vol->mount_point, rc);
#endif
return rc;
}
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