From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001
From: Vladimir Azarov <avm@intermediate-node.net>
Date: Tue, 1 Oct 2024 15:47:05 +0200
Subject: Initial version

---
 src/ipc/ftok.c | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 src/ipc/ftok.c

(limited to 'src/ipc/ftok.c')

diff --git a/src/ipc/ftok.c b/src/ipc/ftok.c
new file mode 100644
index 0000000..c36b4b6
--- /dev/null
+++ b/src/ipc/ftok.c
@@ -0,0 +1,10 @@
+#include <sys/ipc.h>
+#include <sys/stat.h>
+
+key_t ftok(const char *path, int id)
+{
+	struct stat st;
+	if (stat(path, &st) < 0) return -1;
+
+	return ((st.st_ino & 0xffff) | ((st.st_dev & 0xff) << 16) | ((id & 0xffu) << 24));
+}
-- 
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