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-rw-r--r--include/sys/file.h21
1 files changed, 21 insertions, 0 deletions
diff --git a/include/sys/file.h b/include/sys/file.h
new file mode 100644
index 00000000..8b2eb01a
--- /dev/null
+++ b/include/sys/file.h
@@ -0,0 +1,21 @@
+#ifndef _SYS_FILE_H
+#define _SYS_FILE_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+
+#define LOCK_SH 1
+#define LOCK_EX 2
+#define LOCK_NB 4
+#define LOCK_UN 8
+
+extern int flock(int, int);
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+#endif