/* * Copyright 2010 Stefan Lankes, Chair for Operating Systems, * RWTH Aachen University * * 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. * * This file is part of MetalSVM. */ #include #include #include #include #include /*file descriptor init*/ #define NR_OPEN 10 #define FS_INIT { [0 ... NR_OPEN-1] = {NULL, 0, 0} } /*open flags*/ //#define O_RDONLY 0 //#define O_WRONLY 1 #define O_RDWR 2 #define O_CREAT 64 #define O_EXCL 128 //#define O_NOCTTY 256 #define O_TRUNC 512 #define O_APPEND 1024 int main(int argc, char** argv) { char* teststr = malloc(sizeof(char)*100); int testfile = open("/bin/test2", O_CREAT | O_EXCL, "wr"); write(testfile, "hello in new file '/bin/test2'", 30); lseek(testfile, 0, SEEK_SET); read(testfile, teststr, 100); close(testfile); printf("Gelesen aus neuer Datei: %s", teststr); return errno; }