Prep v221: Update and clean up build system to sync with upstream

This commit replays the moving around of source files that have been
done between systemd-219 and systemd-221.

Further the Makefile.am is synchronized with the upstream version and
then "re-cleaned".

A lot of functions, that are not used anywhere in elogind have been
coated into #if 0/#endif directives to further shorten the list of
dependencies.

All unneeded files have been removed.

1 files changed, 51 insertions, 0 deletions

diff --git a/src/basic/fileio.h b/src/basic/fileio.h
new file mode 100644
index 000000000..1fdad924e
--- /dev/null
+++ b/src/basic/fileio.h
@@ -0,0 +1,51 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+  This file is part of systemd.
+
+  Copyright 2010 Lennart Poettering
+
+  systemd 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.
+
+  systemd 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.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+#include <stddef.h>
+#include <stdio.h>
+
+#include "macro.h"
+
+typedef enum {
+        WRITE_STRING_FILE_CREATE = 1,
+        WRITE_STRING_FILE_ATOMIC = 2,
+        WRITE_STRING_FILE_AVOID_NEWLINE = 4,
+} WriteStringFileFlags;
+
+int write_string_stream(FILE *f, const char *line, bool enforce_newline);
+int write_string_file(const char *fn, const char *line, WriteStringFileFlags flags);
+
+int read_one_line_file(const char *fn, char **line);
+int read_full_file(const char *fn, char **contents, size_t *size);
+int read_full_stream(FILE *f, char **contents, size_t *size);
+
+int verify_one_line_file(const char *fn, const char *line);
+
+int parse_env_file(const char *fname, const char *separator, ...) _sentinel_;
+int load_env_file(FILE *f, const char *fname, const char *separator, char ***l);
+// UNNEEDED int load_env_file_pairs(FILE *f, const char *fname, const char *separator, char ***l);
+
+int write_env_file(const char *fname, char **l);
+
+// UNNEEDED int executable_is_script(const char *path, char **interpreter);
+
+int get_status_field(const char *filename, const char *pattern, char **field);