1 files changed, 60 insertions, 0 deletions
diff --git a/src/xz/main.h b/src/xz/main.h
new file mode 100644
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--- /dev/null
+++ b/src/xz/main.h
@@ -0,0 +1,60 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       main.h
+/// \brief      Miscellanous declarations
+//
+//  Copyright (C) 2008 Lasse Collin
+//
+//  This program is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU Lesser General Public
+//  License as published by the Free Software Foundation; either
+//  version 2.1 of the License, or (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//  Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef MAIN_H
+#define MAIN_H
+
+/// Possible exit status values. These are the same as used by gzip and bzip2.
+enum exit_status_type {
+	E_SUCCESS  = 0,
+	E_ERROR    = 1,
+	E_WARNING  = 2,
+};
+
+
+/// If this is true, we will clean up the possibly incomplete output file,
+/// return to main() as soon as practical. That is, the code needs to poll
+/// this variable in various places.
+extern volatile sig_atomic_t user_abort;
+
+
+/// Block the signals which don't have SA_RESTART and which would just set
+/// user_abort to true. This is handy when we don't want to handle EINTR
+/// and don't want SA_RESTART either.
+extern void signals_block(void);
+
+
+/// Unblock the signals blocked by signals_block().
+extern void signals_unblock(void);
+
+
+/// Sets the exit status after a warning or error has occurred. If new_status
+/// is EX_WARNING and the old exit status was already EX_ERROR, the exit
+/// status is not changed.
+extern void set_exit_status(enum exit_status_type new_status);
+
+
+/// Exits the program using the given status. This takes care of closing
+/// stdin, stdout, and stderr and catches possible errors. If we had got
+/// a signal, this function will raise it so that to the parent process it
+/// appears that we were killed by the signal sent by the user.
+extern void my_exit(enum exit_status_type status) lzma_attribute((noreturn));
+
+
+#endif