97ac40e4e6
Change-Id: I48ee8bd90b47f5845f069cdf4d1b8ba6ecdb1b39 Signed-off-by: San Mehat <san@google.com>
83 lines
2 KiB
C++
83 lines
2 KiB
C++
/*
|
|
* 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 <stdio.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
|
|
#define LOG_TAG "Vold"
|
|
|
|
#include <cutils/log.h>
|
|
|
|
#include "Xwarp.h"
|
|
const char *Xwarp::XWARP_BACKINGFILE = "/mnt/secure/asec/xwarp.img";
|
|
const char *Xwarp::XWARP_CFG = "/sys/fs/yaffs/mtd3/xwarp-backing-store";
|
|
const char *Xwarp::XWARP_READY = "/sys/fs/yaffs/mtd3/xwarp-ready";
|
|
const char *Xwarp::XWARP_MIRROR_STATUS = "/sys/fs/yaffs/mtd3/xwarp-mirror";
|
|
|
|
int Xwarp::enable() {
|
|
return doEnableDisable(true);
|
|
}
|
|
|
|
int Xwarp::disable() {
|
|
return doEnableDisable(false);
|
|
}
|
|
|
|
int Xwarp::status(bool *ready, unsigned *mirrorPos, unsigned *maxSize) {
|
|
FILE *fp;
|
|
|
|
*ready = false;
|
|
*mirrorPos = 0;
|
|
*maxSize = 0;
|
|
if (!(fp = fopen(XWARP_READY, "r"))) {
|
|
return -1;
|
|
}
|
|
|
|
fscanf(fp, "%d", (int *) ready);
|
|
fclose(fp);
|
|
|
|
if (!(fp = fopen(XWARP_MIRROR_STATUS, "r"))) {
|
|
return -1;
|
|
}
|
|
|
|
fscanf(fp, "%u %u", mirrorPos, maxSize);
|
|
fclose(fp);
|
|
return 0;
|
|
}
|
|
|
|
int Xwarp::doEnableDisable(bool enable) {
|
|
const char *tmp;
|
|
int fd = open(XWARP_CFG, O_WRONLY);
|
|
|
|
if (fd < 0)
|
|
return -1;
|
|
|
|
tmp = (enable ? XWARP_BACKINGFILE : "");
|
|
|
|
if (write(fd, tmp, strlen(tmp)+1) < 0) {
|
|
SLOGE("Failed to write xwarp cfg (%s)", strerror(errno));
|
|
close(fd);
|
|
return -1;
|
|
}
|
|
|
|
close(fd);
|
|
return 0;
|
|
}
|