Initial Contribution
diff --git a/libc/bionic/ssp.c b/libc/bionic/ssp.c
new file mode 100644
index 0000000..20794f4
--- /dev/null
+++ b/libc/bionic/ssp.c
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include "logd.h"
+
+void *__stack_chk_guard = 0;
+
+/* Initialize the canary with a random value from /dev/urandom.
+ * If that fails, use the "terminator canary". */
+static void __attribute__ ((constructor))
+__guard_setup(void)
+{
+ int fd;
+
+ fd = open("/dev/urandom", O_RDONLY);
+ if (fd != -1) {
+ ssize_t len = read(fd, &__stack_chk_guard,
+ sizeof(__stack_chk_guard));
+ close(fd);
+ if (len == sizeof(__stack_chk_guard))
+ return;
+ }
+
+ /* If that failed, switch to 'terminator canary' */
+ ((unsigned char *)&__stack_chk_guard)[0] = 0;
+ ((unsigned char *)&__stack_chk_guard)[1] = 0;
+ ((unsigned char *)&__stack_chk_guard)[2] = '\n';
+ ((unsigned char *)&__stack_chk_guard)[3] = 255;
+}
+
+/* This is the crash handler.
+ * Does a best effort at logging and calls _exit to terminate
+ * the process immediately (without atexit handlers, etc.) */
+void __stack_chk_fail(void)
+{
+ struct sigaction sa;
+ sigset_t sigmask;
+ static const char message[] = "stack corruption detected: aborted";
+ char path[PATH_MAX];
+ int count;
+
+ /* Immediately block all (but SIGABRT) signal handlers from running code */
+ sigfillset(&sigmask);
+ sigdelset(&sigmask, SIGABRT);
+ sigprocmask(SIG_BLOCK, &sigmask, NULL);
+
+ /* Use /proc/self/exe link to obtain the program name for logging
+ * purposes. If it's not available, we set it to "unknown" */
+ if ((count = readlink("/proc/self/exe", path, sizeof(path) - 1)) == -1) {
+ strlcpy(path, "unknown", sizeof(path));
+ } else {
+ path[count] = '\0';
+ }
+
+ /* Do a best effort at logging. This ends up calling writev(2) */
+ __libc_android_log_print(ANDROID_LOG_FATAL, path, message);
+
+ /* Make sure there is no default action for SIGABRT */
+ bzero(&sa, sizeof(struct sigaction));
+ sigemptyset(&sa.sa_mask);
+ sa.sa_flags = 0;
+ sa.sa_handler = SIG_DFL;
+ sigaction(SIGABRT, &sa, NULL);
+
+ /* Terminate the process and exit immediately */
+ kill(getpid(), SIGABRT);
+
+ _exit(127);
+}