Update decrypt for 4.4
Change-Id: I8d5d7b6a49890e4707d70de8b429563de0d2ad99
diff --git a/crypto/logwrapper/include/logwrap/logwrap.h b/crypto/logwrapper/include/logwrap/logwrap.h
new file mode 100644
index 0000000..4307a30
--- /dev/null
+++ b/crypto/logwrapper/include/logwrap/logwrap.h
@@ -0,0 +1,87 @@
+/* system/core/include/logwrap/logwrap.h
+ *
+ * Copyright 2013, 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.
+ */
+
+#ifndef __LIBS_LOGWRAP_H
+#define __LIBS_LOGWRAP_H
+
+#include <stdbool.h>
+
+__BEGIN_DECLS
+
+/*
+ * Run a command while logging its stdout and stderr
+ *
+ * WARNING: while this function is running it will clear all SIGCHLD handlers
+ * if you rely on SIGCHLD in the caller there is a chance zombies will be
+ * created if you're not calling waitpid after calling this. This function will
+ * log a warning when it clears SIGCHLD for processes other than the child it
+ * created.
+ *
+ * Arguments:
+ * argc: the number of elements in argv
+ * argv: an array of strings containing the command to be executed and its
+ * arguments as separate strings. argv does not need to be
+ * NULL-terminated
+ * status: the equivalent child status as populated by wait(status). This
+ * value is only valid when logwrap successfully completes. If NULL
+ * the return value of the child will be the function's return value.
+ * ignore_int_quit: set to true if you want to completely ignore SIGINT and
+ * SIGQUIT while logwrap is running. This may force the end-user to
+ * send a signal twice to signal the caller (once for the child, and
+ * once for the caller)
+ * log_target: Specify where to log the output of the child, either LOG_NONE,
+ * LOG_ALOG (for the Android system log), LOG_KLOG (for the kernel
+ * log), or LOG_FILE (and you need to specify a pathname in the
+ * file_path argument, otherwise pass NULL). These are bit fields,
+ * and can be OR'ed together to log to multiple places.
+ * abbreviated: If true, capture up to the first 100 lines and last 4K of
+ * output from the child. The abbreviated output is not dumped to
+ * the specified log until the child has exited.
+ * file_path: if log_target has the LOG_FILE bit set, then this parameter
+ * must be set to the pathname of the file to log to.
+ *
+ * Return value:
+ * 0 when logwrap successfully run the child process and captured its status
+ * -1 when an internal error occurred
+ * -ECHILD if status is NULL and the child didn't exit properly
+ * the return value of the child if it exited properly and status is NULL
+ *
+ */
+
+/* Values for the log_target parameter android_fork_execvp_ext() */
+#define LOG_NONE 0
+#define LOG_ALOG 1
+#define LOG_KLOG 2
+#define LOG_FILE 4
+
+int android_fork_execvp_ext(int argc, char* argv[], int *status, bool ignore_int_quit,
+ int log_target, bool abbreviated, char *file_path);
+
+/* Similar to above, except abbreviated logging is not available, and if logwrap
+ * is true, logging is to the Android system log, and if false, there is no
+ * logging.
+ */
+static inline int android_fork_execvp(int argc, char* argv[], int *status,
+ bool ignore_int_quit, bool logwrap)
+{
+ return android_fork_execvp_ext(argc, argv, status, ignore_int_quit,
+ (logwrap ? LOG_ALOG : LOG_NONE), false, NULL);
+}
+
+__END_DECLS
+
+#endif /* __LIBS_LOGWRAP_H */