Update decrypt for 4.4
Change-Id: I8d5d7b6a49890e4707d70de8b429563de0d2ad99
diff --git a/crypto/logwrapper/logwrapper.c b/crypto/logwrapper/logwrapper.c
new file mode 100644
index 0000000..d0d8d14
--- /dev/null
+++ b/crypto/logwrapper/logwrapper.c
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2008 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.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#include <logwrap/logwrap.h>
+#include <cutils/klog.h>
+
+#include "cutils/log.h"
+
+void fatal(const char *msg) {
+ fprintf(stderr, "%s", msg);
+ ALOG(LOG_ERROR, "logwrapper", "%s", msg);
+ exit(-1);
+}
+
+void usage() {
+ fatal(
+ "Usage: logwrapper [-a] [-d] [-k] BINARY [ARGS ...]\n"
+ "\n"
+ "Forks and executes BINARY ARGS, redirecting stdout and stderr to\n"
+ "the Android logging system. Tag is set to BINARY, priority is\n"
+ "always LOG_INFO.\n"
+ "\n"
+ "-a: Causes logwrapper to do abbreviated logging.\n"
+ " This logs up to the first 4K and last 4K of the command\n"
+ " being run, and logs the output when the command exits\n"
+ "-d: Causes logwrapper to SIGSEGV when BINARY terminates\n"
+ " fault address is set to the status of wait()\n"
+ "-k: Causes logwrapper to log to the kernel log instead of\n"
+ " the Android system log\n");
+}
+
+int main(int argc, char* argv[]) {
+ int seg_fault_on_exit = 0;
+ int log_target = LOG_ALOG;
+ bool abbreviated = false;
+ int ch;
+ int status = 0xAAAA;
+ int rc;
+
+ while ((ch = getopt(argc, argv, "adk")) != -1) {
+ switch (ch) {
+ case 'a':
+ abbreviated = true;
+ break;
+ case 'd':
+ seg_fault_on_exit = 1;
+ break;
+ case 'k':
+ log_target = LOG_KLOG;
+ klog_set_level(6);
+ break;
+ case '?':
+ default:
+ usage();
+ }
+ }
+ argc -= optind;
+ argv += optind;
+
+ if (argc < 1) {
+ usage();
+ }
+
+ rc = android_fork_execvp_ext(argc, &argv[0], &status, true,
+ log_target, abbreviated, NULL);
+ if (!rc) {
+ if (WIFEXITED(status))
+ rc = WEXITSTATUS(status);
+ else
+ rc = -ECHILD;
+ }
+
+ if (seg_fault_on_exit) {
+ *(int *)status = 0; // causes SIGSEGV with fault_address = status
+ }
+
+ return rc;
+}