1 files changed, 187 insertions, 0 deletions
diff --git a/lib/compat/compat.h b/lib/compat/compat.h
new file mode 100644
index 0000000..c1aa601
--- /dev/null
+++ b/lib/compat/compat.h
@@ -0,0 +1,187 @@
+/*
+ * libcompat - system compatibility library
+ * compat.h - system compatibility declarations
+ *
+ * Copyright © 1995 Ian Jackson <ijackson@chiark.greenend.org.uk>
+ * Copyright © 2008, 2009 Guillem Jover <guillem@debian.org>
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef COMPAT_H
+#define COMPAT_H
+
+#ifndef TEST_LIBCOMPAT
+#define TEST_LIBCOMPAT 0
+#endif
+
+#if TEST_LIBCOMPAT || !defined(HAVE_STRNLEN) || !defined(HAVE_STRNDUP) || \
+    !defined(HAVE_C99_SNPRINTF)
+#include <stddef.h>
+#endif
+
+#if TEST_LIBCOMPAT || !defined(HAVE_ASPRINTF) || !defined(HAVE_C99_SNPRINTF)
+#include <stdarg.h>
+#endif
+
+#if  TEST_LIBCOMPAT || !defined(HAVE_VA_COPY)
+#include <string.h>
+#endif
+
+/* Language definitions. */
+
+#ifdef __GNUC__
+#define LIBCOMPAT_GCC_VERSION (__GNUC__ << 8 | __GNUC_MINOR__)
+#else
+#define LIBCOMPAT_GCC_VERSION 0
+#endif
+
+#if LIBCOMPAT_GCC_VERSION >= 0x0300
+#define LIBCOMPAT_ATTR_PRINTF(n)	__attribute__((format(printf, n, n + 1)))
+#define LIBCOMPAT_ATTR_VPRINTF(n)	__attribute__((format(printf, n, 0)))
+#else
+#define LIBCOMPAT_ATTR_PRINTF(n)
+#define LIBCOMPAT_ATTR_VPRINTF(n)
+#endif
+
+/* For C++, define a __func__ fallback in case it's not natively supported. */
+#if defined(__cplusplus) && __cplusplus < 201103L
+# if LIBCOMPAT_GCC_VERSION >= 0x0200
+#  define __func__ __PRETTY_FUNCTION__
+# else
+#  define __func__ __FUNCTION__
+# endif
+#endif
+
+#if defined(__cplusplus) && __cplusplus < 201103L
+#define nullptr 0
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef HAVE_OFFSETOF
+#define offsetof(st, m) ((size_t)&((st *)NULL)->m)
+#endif
+
+#ifndef HAVE_MAKEDEV
+#define makedev(maj, min) ((((maj) & 0xff) << 8) | ((min) & 0xff))
+#endif
+
+#ifndef HAVE_O_NOFOLLOW
+#define O_NOFOLLOW 0
+#endif
+
+#ifndef HAVE_P_TMPDIR
+#define P_tmpdir "/tmp"
+#endif
+
+/*
+ * Define WCOREDUMP if we don't have it already, coredumps won't be
+ * detected, though.
+ */
+#ifndef HAVE_WCOREDUMP
+#define WCOREDUMP(x) 0
+#endif
+
+#ifndef HAVE_VA_COPY
+#define va_copy(dest, src) memcpy(&(dest), &(src), sizeof(va_list))
+#endif
+
+#if TEST_LIBCOMPAT
+#undef snprintf
+#define snprintf test_snprintf
+#undef vsnprintf
+#define vsnprintf test_vsnprintf
+#undef asprintf
+#define asprintf test_asprintf
+#undef vasprintf
+#define vasprintf test_vasprintf
+#undef strchrnul
+#define strchrnul test_strchrnul
+#undef strndup
+#define strndup test_strndup
+#undef strnlen
+#define strnlen test_strnlen
+#undef strerror
+#define strerror test_strerror
+#undef strsignal
+#define strsignal test_strsignal
+#undef scandir
+#define scandir test_scandir
+#undef alphasort
+#define alphasort test_alphasort
+#undef unsetenv
+#define unsetenv test_unsetenv
+#endif
+
+#if TEST_LIBCOMPAT || !defined(HAVE_C99_SNPRINTF)
+int snprintf(char *str, size_t n, char const *fmt, ...)
+	LIBCOMPAT_ATTR_PRINTF(3);
+int vsnprintf(char *buf, size_t maxsize, const char *fmt, va_list args)
+	LIBCOMPAT_ATTR_VPRINTF(3);
+#endif
+
+#if TEST_LIBCOMPAT || !defined(HAVE_ASPRINTF)
+int asprintf(char **str, char const *fmt, ...)
+	LIBCOMPAT_ATTR_PRINTF(2);
+int vasprintf(char **str, const char *fmt, va_list args)
+	LIBCOMPAT_ATTR_VPRINTF(2);
+#endif
+
+#if TEST_LIBCOMPAT || !defined(HAVE_STRCHRNUL)
+char *strchrnul(const char *s, int c);
+#endif
+
+#if TEST_LIBCOMPAT || !defined(HAVE_STRNLEN)
+size_t strnlen(const char *s, size_t n);
+#endif
+
+#if TEST_LIBCOMPAT || !defined(HAVE_STRNDUP)
+char *strndup(const char *s, size_t n);
+#endif
+
+#if TEST_LIBCOMPAT || !defined(HAVE_STRERROR)
+const char *strerror(int);
+#endif
+
+#if TEST_LIBCOMPAT || !defined(HAVE_STRSIGNAL)
+const char *strsignal(int);
+#endif
+
+#if TEST_LIBCOMPAT || !defined(HAVE_SCANDIR)
+struct dirent;
+int scandir(const char *dir, struct dirent ***namelist,
+            int (*filter)(const struct dirent *),
+            int (*cmp)(const void *, const void *));
+#endif
+
+#if TEST_LIBCOMPAT || !defined(HAVE_ALPHASORT)
+int alphasort(const void *a, const void *b);
+#endif
+
+#if TEST_LIBCOMPAT || !defined(HAVE_UNSETENV)
+int unsetenv(const char *x);
+#endif
+
+#if TEST_LIBCOMPAT || !defined(HAVE_SETEXECFILECON)
+int setexecfilecon(const char *filename, const char *fallback_type);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* COMPAT_H */