AC_SEARCH_LIBS([dlsym], [dl], [], [AC_MSG_ERROR([*** Dynamic linking loader library not found])])
AC_CHECK_HEADERS([sys/capability.h], [], [AC_MSG_ERROR([*** POSIX caps headers not found])])
AC_CHECK_HEADERS([linux/btrfs.h], [], [])
+AC_CHECK_HEADERS([linux/memfd.h], [], [])
# unconditionally pull-in librt with old glibc versions
AC_SEARCH_LIBS([clock_gettime], [rt], [], [])
LIBS="$save_LIBS"
AC_CHECK_FUNCS([fanotify_init fanotify_mark])
+AC_CHECK_FUNCS([memfd_create])
AC_CHECK_FUNCS([__secure_getenv secure_getenv])
AC_CHECK_DECLS([gettid, pivot_root, name_to_handle_at, setns, LO_FLAGS_PARTSCAN],
[], [], [[
#include <sys/mman.h>
#include <sys/prctl.h>
+#ifdef HAVE_LINUX_MEMFD_H
+# include <linux/memfd.h>
+#endif
+
#include "util.h"
#include "bus-label.h"
-#include "missing.h"
#include "memfd.h"
#include "utf8.h"
+#include "missing.h"
int memfd_new(const char *name) {
_cleanup_free_ char *g = NULL;
#ifndef F_ADD_SEALS
#define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9)
-#endif
-
-#ifndef F_GET_SEALS
#define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10)
-#endif
-#ifndef F_SEAL_SEAL
#define F_SEAL_SEAL 0x0001 /* prevent further seals from being set */
-#endif
-
-#ifndef F_SEAL_SHRINK
#define F_SEAL_SHRINK 0x0002 /* prevent file from shrinking */
-#endif
-
-#ifndef F_SEAL_GROW
#define F_SEAL_GROW 0x0004 /* prevent file from growing */
-#endif
-
-#ifndef F_SEAL_WRITE
#define F_SEAL_WRITE 0x0008 /* prevent writes */
#endif