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-rw-r--r--debuggerd/crasher.c88
1 files changed, 52 insertions, 36 deletions
diff --git a/debuggerd/crasher.c b/debuggerd/crasher.c
index 5a2bc3c..01ce0be 100644
--- a/debuggerd/crasher.c
+++ b/debuggerd/crasher.c
@@ -1,21 +1,23 @@
-
-//#include <cutils/misc.h>
-
-#include <unistd.h>
+#include <assert.h>
+#include <errno.h>
+#include <pthread.h>
+#include <sched.h>
+#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <sched.h>
-#include <errno.h>
-
-#include <signal.h>
+#include <sys/cdefs.h>
#include <sys/ptrace.h>
-#include <sys/wait.h>
#include <sys/socket.h>
-
-#include <pthread.h>
+#include <sys/wait.h>
+#include <unistd.h>
#include <cutils/sockets.h>
+#include <log/log.h>
+
+#ifndef __unused
+#define __unused __attribute__((__unused__))
+#endif
extern const char* __progname;
@@ -23,13 +25,13 @@ void crash1(void);
void crashnostack(void);
static int do_action(const char* arg);
-static void maybeabort() {
- if(time(0) != 42) {
+static void maybe_abort() {
+ if (time(0) != 42) {
abort();
}
}
-static int smash_stack(int i) {
+static int smash_stack(int i __unused) {
printf("crasher: deliberately corrupting stack...\n");
// Unless there's a "big enough" buffer on the stack, gcc
// doesn't bother inserting checks.
@@ -50,11 +52,6 @@ __attribute__((noinline)) static void overflow_stack(void* p) {
overflow_stack(&buf);
}
-static void test_call1()
-{
- *((int*) 32) = 1;
-}
-
static void *noisy(void *x)
{
char c = (uintptr_t) x;
@@ -119,35 +116,54 @@ static int do_action(const char* arg)
if (!strncmp(arg, "thread-", strlen("thread-"))) {
return do_action_on_thread(arg + strlen("thread-"));
- } else if (!strcmp(arg,"smash-stack")) {
+ } else if (!strcmp(arg, "smash-stack")) {
return smash_stack(42);
- } else if (!strcmp(arg,"stack-overflow")) {
+ } else if (!strcmp(arg, "stack-overflow")) {
overflow_stack(NULL);
- } else if (!strcmp(arg,"nostack")) {
+ } else if (!strcmp(arg, "nostack")) {
crashnostack();
- } else if (!strcmp(arg,"ctest")) {
+ } else if (!strcmp(arg, "ctest")) {
return ctest();
- } else if (!strcmp(arg,"exit")) {
+ } else if (!strcmp(arg, "exit")) {
exit(1);
- } else if (!strcmp(arg,"crash")) {
+ } else if (!strcmp(arg, "crash") || !strcmp(arg, "SIGSEGV")) {
return crash(42);
- } else if (!strcmp(arg,"abort")) {
- maybeabort();
+ } else if (!strcmp(arg, "abort")) {
+ maybe_abort();
+ } else if (!strcmp(arg, "assert")) {
+ __assert("some_file.c", 123, "false");
+ } else if (!strcmp(arg, "assert2")) {
+ __assert2("some_file.c", 123, "some_function", "false");
+ } else if (!strcmp(arg, "LOG_ALWAYS_FATAL")) {
+ LOG_ALWAYS_FATAL("hello %s", "world");
+ } else if (!strcmp(arg, "LOG_ALWAYS_FATAL_IF")) {
+ LOG_ALWAYS_FATAL_IF(true, "hello %s", "world");
+ } else if (!strcmp(arg, "SIGPIPE")) {
+ int pipe_fds[2];
+ pipe(pipe_fds);
+ close(pipe_fds[0]);
+ write(pipe_fds[1], "oops", 4);
+ return EXIT_SUCCESS;
} else if (!strcmp(arg, "heap-usage")) {
abuse_heap();
}
fprintf(stderr, "%s OP\n", __progname);
fprintf(stderr, "where OP is:\n");
- fprintf(stderr, " smash-stack overwrite a stack-guard canary\n");
- fprintf(stderr, " stack-overflow recurse until the stack overflows\n");
- fprintf(stderr, " heap-corruption cause a libc abort by corrupting the heap\n");
- fprintf(stderr, " heap-usage cause a libc abort by abusing a heap function\n");
- fprintf(stderr, " nostack crash with a NULL stack pointer\n");
- fprintf(stderr, " ctest (obsoleted by thread-crash?)\n");
- fprintf(stderr, " exit call exit(1)\n");
- fprintf(stderr, " crash cause a SIGSEGV\n");
- fprintf(stderr, " abort call abort()\n");
+ fprintf(stderr, " smash-stack overwrite a stack-guard canary\n");
+ fprintf(stderr, " stack-overflow recurse until the stack overflows\n");
+ fprintf(stderr, " heap-corruption cause a libc abort by corrupting the heap\n");
+ fprintf(stderr, " heap-usage cause a libc abort by abusing a heap function\n");
+ fprintf(stderr, " nostack crash with a NULL stack pointer\n");
+ fprintf(stderr, " ctest (obsoleted by thread-crash?)\n");
+ fprintf(stderr, " exit call exit(1)\n");
+ fprintf(stderr, " abort call abort()\n");
+ fprintf(stderr, " assert call assert() without a function\n");
+ fprintf(stderr, " assert2 call assert() with a function\n");
+ fprintf(stderr, " LOG_ALWAYS_FATAL call LOG_ALWAYS_FATAL\n");
+ fprintf(stderr, " LOG_ALWAYS_FATAL_IF call LOG_ALWAYS_FATAL\n");
+ fprintf(stderr, " SIGPIPE cause a SIGPIPE\n");
+ fprintf(stderr, " SIGSEGV cause a SIGSEGV (synonym: crash)\n");
fprintf(stderr, "prefix any of the above with 'thread-' to not run\n");
fprintf(stderr, "on the process' main thread.\n");
return EXIT_SUCCESS;