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/*
* Copyright (C) 2014 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 <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include "adb.h"
#include "fuse_sideload.h"
struct adb_data {
int sfd; // file descriptor for the adb channel
uint64_t file_size;
uint32_t block_size;
};
static int read_block_adb(void* cookie, uint32_t block, uint8_t* buffer, uint32_t fetch_size) {
struct adb_data* ad = (struct adb_data*)cookie;
char buf[10];
snprintf(buf, sizeof(buf), "%08u", block);
if (writex(ad->sfd, buf, 8) < 0) {
fprintf(stderr, "failed to write to adb host: %s\n", strerror(errno));
return -EIO;
}
if (readx(ad->sfd, buffer, fetch_size) < 0) {
fprintf(stderr, "failed to read from adb host: %s\n", strerror(errno));
return -EIO;
}
return 0;
}
static void close_adb(void* cookie) {
struct adb_data* ad = (struct adb_data*)cookie;
writex(ad->sfd, "DONEDONE", 8);
}
int run_adb_fuse(int sfd, uint64_t file_size, uint32_t block_size) {
struct adb_data ad;
struct provider_vtab vtab;
ad.sfd = sfd;
ad.file_size = file_size;
ad.block_size = block_size;
vtab.read_block = read_block_adb;
vtab.close = close_adb;
return run_old_fuse_sideload(&vtab, &ad, file_size, block_size);
}
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