| /* |

| * Copyright 2012, 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. |

| */ |

| |

| |

| /** |

| * The probability of a syscall failing from 0.0 to 1.0 |

| */ |

| #define PROBABILITY 0.9 |

| |

| |

| |

| #include <stdio.h> |

| #include <stdlib.h> |

| #include <errno.h> |

| |

| /* for various intercepted calls */ |

| #include <sys/types.h> |

| #include <sys/socket.h> |

| #include <sys/stat.h> |

| #include <fcntl.h> |

| |

| /* For builds on glibc */ |

| #define __USE_GNU |

| #include <dlfcn.h> |

| |

| #include "interrupter.h" |

| |

| static int probability = PROBABILITY * RAND_MAX; |

| |

| static int maybe_interrupt() { |

| if (rand() < probability) { |

| return 1; |

| } |

| return 0; |

| } |

| |

| DEFINE_INTERCEPT(read, ssize_t, int, void*, size_t); |

| DEFINE_INTERCEPT(write, ssize_t, int, const void*, size_t); |

| DEFINE_INTERCEPT(accept, int, int, struct sockaddr*, socklen_t*); |

| DEFINE_INTERCEPT(creat, int, const char*, mode_t); |