From ad0302ab8213e35070e50beba03d8da5c57f4fc4 Mon Sep 17 00:00:00 2001
From: uxtbd <dev@kthread.dev>
Date: Tue, 18 Aug 2026 10:41:53 -0300
Subject: 4suite: move to shinobi

---
 4rc/4rc.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 4rc/4rc.c

(limited to '4rc/4rc.c')

diff --git a/4rc/4rc.c b/4rc/4rc.c
new file mode 100644
index 0000000..68a5d9f
--- /dev/null
+++ b/4rc/4rc.c
@@ -0,0 +1,56 @@
+#define _POSIX_C_SOURCE 200809L
+
+#include <stdio.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+void create_vfs(void) {
+	mkdir("/proc", 0755);
+	mkdir("/sys", 0755);
+	mkdir("/dev", 0755);
+	mkdir("/run", 0755);
+}
+
+void mount_vfs(void) {
+	if (mount("proc", "/proc", "proc",
+			  MS_NOSUID | MS_NODEV | MS_NOEXEC | MS_RELATIME, NULL) != 0) {
+		perror("mount /proc");
+	}
+
+	if (mount("sys", "/sys", "sysfs",
+			  MS_NOSUID | MS_NODEV | MS_NOEXEC | MS_RELATIME, NULL) != 0) {
+		perror("mount /sys");
+	}
+
+	if (mount("dev", "/dev", "devtmpfs", MS_NOSUID | MS_RELATIME, "mode=755") !=
+		0) {
+		perror("mount /dev");
+	}
+
+	if (mount("run", "/run", "tmpfs", MS_NOSUID | MS_NODEV | MS_RELATIME,
+			  "mode=755") != 0) {
+		perror("mount /run");
+	}
+
+	mkdir("/dev/pts", 0755);
+	mkdir("/dev/shm", 1777);
+
+	if (mount("devpts", "/dev/pts", "devpts",
+			  MS_NOSUID | MS_NOEXEC | MS_RELATIME, "gid=5,mode=620") != 0) {
+		perror("mount /dev/pts");
+	}
+
+	if (mount("shm", "/dev/shm", "tmpfs", MS_NOSUID | MS_NODEV | MS_RELATIME,
+			  "mode=1777") != 0) {
+		perror("mount /dev/shm");
+	}
+}
+
+int main(void) {
+	create_vfs();
+	mount_vfs();
+
+	return 0;
+}
-- 
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