/* * Copyright (C) 2013 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. */ #define _FILE_OFFSET_BITS 64 #define _LARGEFILE64_SOURCE 1 #include <errno.h> #include <fcntl.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <sparse/sparse.h> #include "sparse_file.h" #include "backed_block.h" #ifndef O_BINARY #define O_BINARY 0 #endif #if defined(__APPLE__) && defined(__MACH__) #define lseek64 lseek #endif #if defined(__APPLE__) && defined(__MACH__) #define lseek64 lseek #define off64_t off_t #endif void usage() { fprintf(stderr, "Usage: append2simg <output> <input>\n"); } int main(int argc, char *argv[]) { int output; int output_block; char *output_path; struct sparse_file *sparse_output; int input; char *input_path; off64_t input_len; if (argc == 3) { output_path = argv[1]; input_path = argv[2]; } else { usage(); exit(-1); } output = open(output_path, O_RDWR | O_BINARY); if (output < 0) { fprintf(stderr, "Couldn't open output file (%s)\n", strerror(errno)); exit(-1); } sparse_output = sparse_file_import_auto(output, true); if (!sparse_output) { fprintf(stderr, "Couldn't import output file\n"); exit(-1); } input = open(input_path, O_RDONLY | O_BINARY); if (input < 0) { fprintf(stderr, "Couldn't open input file (%s)\n", strerror(errno)); exit(-1); } input_len = lseek64(input, 0, SEEK_END); if (input_len < 0) { fprintf(stderr, "Couldn't get input file length (%s)\n", strerror(errno)); exit(-1); } else if (input_len % sparse_output->block_size) { fprintf(stderr, "Input file is not a multiple of the output file's block size"); exit(-1); } lseek64(input, 0, SEEK_SET); output_block = sparse_output->len / sparse_output->block_size; if (sparse_file_add_fd(sparse_output, input, 0, input_len, output_block) < 0) { fprintf(stderr, "Couldn't add input file\n"); exit(-1); } sparse_output->len += input_len; lseek64(output, 0, SEEK_SET); if (sparse_file_write(sparse_output, output, false, true, false) < 0) { fprintf(stderr, "Failed to write sparse file\n"); exit(-1); } sparse_file_destroy(sparse_output); close(output); close(input); exit(0); }