91 lines
2.2 KiB
C++
91 lines
2.2 KiB
C++
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/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#include <dirent.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <sys/mount.h>
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#include <linux/kdev_t.h>
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#include <linux/fs.h>
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#define LOG_TAG "Vold"
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#include <cutils/log.h>
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#include <cutils/properties.h>
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#include "Ext4.h"
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#define MKEXT4FS_PATH "/system/bin/make_ext4fs";
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extern "C" int logwrap(int argc, const char **argv, int background);
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int Ext4::doMount(const char *fsPath, const char *mountPoint, bool ro, bool remount,
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bool executable) {
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int rc;
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unsigned long flags;
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flags = MS_NOATIME | MS_NODEV | MS_NOSUID | MS_DIRSYNC;
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flags |= (executable ? 0 : MS_NOEXEC);
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flags |= (ro ? MS_RDONLY : 0);
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flags |= (remount ? MS_REMOUNT : 0);
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rc = mount(fsPath, mountPoint, "ext4", flags, NULL);
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if (rc && errno == EROFS) {
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SLOGE("%s appears to be a read only filesystem - retrying mount RO", fsPath);
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flags |= MS_RDONLY;
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rc = mount(fsPath, mountPoint, "ext4", flags, NULL);
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}
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return rc;
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}
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int Ext4::format(const char *fsPath) {
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int fd;
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const char *args[4];
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int rc;
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args[0] = MKEXT4FS_PATH;
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args[1] = "-J";
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args[2] = fsPath;
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args[3] = NULL;
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rc = logwrap(3, args, 1);
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if (rc == 0) {
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SLOGI("Filesystem (ext4) formatted OK");
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return 0;
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} else {
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SLOGE("Format (ext4) failed (unknown exit code %d)", rc);
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errno = EIO;
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return -1;
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}
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return 0;
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}
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