Remove interrupter.

There are no signs that this has been used since it was checked in a
decade ago. (If this turns out to be wrong, I'll look at adding this to
toybox as penance.)

Change-Id: Ic1715d6f3581b06d6ea08354bc925395c13fec12

3 files changed, 0 insertions, 151 deletions

diff --git a/cmds/interrupter/Android.bp b/cmds/interrupter/Android.bp
deleted file mode 100644
index d7f744d0834e..000000000000
--- a/cmds/interrupter/Android.bp
+++ /dev/null
@@ -1,20 +0,0 @@
-package {
-    // See: http://go/android-license-faq
-    // A large-scale-change added 'default_applicable_licenses' to import
-    // all of the 'license_kinds' from "frameworks_base_license"
-    // to get the below license kinds:
-    //   SPDX-license-identifier-Apache-2.0
-    default_applicable_licenses: ["frameworks_base_license"],
-}
-
-cc_library_shared {
-    name: "interrupter",
-    host_supported: true,
-    srcs: ["interrupter.c"],
-    cflags: [
-        "-Wall",
-        "-Werror",
-        "-Wunused",
-        "-Wunreachable-code",
-    ],
-}
diff --git a/cmds/interrupter/interrupter.c b/cmds/interrupter/interrupter.c
deleted file mode 100644
index 8bb522a26cec..000000000000
--- a/cmds/interrupter/interrupter.c
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * 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.
- */
-
-#define _GNU_SOURCE
-
-/**
- * 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>
-
-#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);
diff --git a/cmds/interrupter/interrupter.h b/cmds/interrupter/interrupter.h
deleted file mode 100644
index 9ad0277eebbe..000000000000
--- a/cmds/interrupter/interrupter.h
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * 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.
- */
-
-#define CONCATENATE(arg1, arg2)   CONCATENATE1(arg1, arg2)
-#define CONCATENATE1(arg1, arg2)  CONCATENATE2(arg1, arg2)
-#define CONCATENATE2(arg1, arg2)  arg1##arg2
-
-#define INTERRUPTER(sym) \
-    if (real_##sym == NULL) \
-        __init_##sym(); \
-    if (maybe_interrupt()) { \
-        errno = EINTR; \
-        return -1; \
-    }
-
-#define CALL_FUNCTION_1(sym, ret, type1) \
-ret (*real_##sym)(type1) = NULL; \
-ret sym(type1 arg1) { \
-    INTERRUPTER(sym) \
-    return real_##sym(arg1); \
-}
-
-#define CALL_FUNCTION_2(sym, ret, type1, type2) \
-ret (*real_##sym)(type1, type2) = NULL; \
-ret sym(type1 arg1, type2 arg2) { \
-    INTERRUPTER(sym) \
-    return real_##sym(arg1, arg2); \
-}
-
-#define CALL_FUNCTION_3(sym, ret, type1, type2, type3) \
-ret (*real_##sym)(type1, type2, type3) = NULL; \
-ret sym(type1 arg1, type2 arg2, type3 arg3) { \
-    INTERRUPTER(sym) \
-    return real_##sym(arg1, arg2, arg3); \
-}
-
-#define CALL_FUNCTION_4(sym, ret, type1, type2, type3, type4) \
-ret (*real_##sym)(type1, type2, type3, type4) = NULL; \
-ret sym(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \
-    INTERRUPTER(sym) \
-    return real_##sym(arg1, arg2, arg3, arg4); \
-}
-
-#define CALL_FUNCTION_5(sym, ret, type1, type2, type3, type4, type5) \
-ret (*real_##sym)(type1, type2, type3, type4, type5) = NULL; \
-ret sym(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) { \
-    INTERRUPTER(sym) \
-    return real_##sym(arg1, arg2, arg3, arg4, arg5); \
-}
-
-#define DEFINE_INTERCEPT_N(N, sym, ret, ...) \
-static void __init_##sym(void); \
-CONCATENATE(CALL_FUNCTION_, N)(sym, ret, __VA_ARGS__) \
-static void __init_##sym(void) { \
-    real_##sym = dlsym(RTLD_NEXT, #sym); \
-    if (real_##sym == NULL) { \
-        fprintf(stderr, "Error hooking " #sym ": %s\n", dlerror()); \
-    } \
-}
-
-#define INTERCEPT_NARG(...) INTERCEPT_NARG_N(__VA_ARGS__, INTERCEPT_RSEQ_N())
-#define INTERCEPT_NARG_N(...) INTERCEPT_ARG_N(__VA_ARGS__)
-#define INTERCEPT_ARG_N(_1, _2, _3, _4, _5, _6, _7, _8, N, ...) N
-#define INTERCEPT_RSEQ_N() 8, 7, 6, 5, 4, 3, 2, 1, 0
-
-#define DEFINE_INTERCEPT(sym, ret, ...) DEFINE_INTERCEPT_N(INTERCEPT_NARG(__VA_ARGS__), sym, ret, __VA_ARGS__)