68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
|
/*
|
||
|
|
* 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_fuse_sideload(&vtab, &ad, file_size, block_size);
|
||
|
|
}
|