From b7bcd372663fbef6fcc3957310e3e315eef3526b Mon Sep 17 00:00:00 2001
From: Waldemar Brodkorb <wbx@openadk.org>
Date: Thu, 10 Apr 2025 08:43:13 +0200
Subject: miniinit: new package

---
 package/miniinit/Makefile       | 31 +++++++++++++++++++++++++++++
 package/miniinit/src/miniinit.c | 44 +++++++++++++++++++++++++++++++++++++++++
 package/toybox/files/config     |  2 +-
 target/config/Config.in.runtime |  4 ++++
 4 files changed, 80 insertions(+), 1 deletion(-)
 create mode 100644 package/miniinit/Makefile
 create mode 100644 package/miniinit/src/miniinit.c

diff --git a/package/miniinit/Makefile b/package/miniinit/Makefile
new file mode 100644
index 000000000..bef48e965
--- /dev/null
+++ b/package/miniinit/Makefile
@@ -0,0 +1,31 @@
+# This file is part of the OpenADK project. OpenADK is copyrighted
+# material, please see the LICENCE file in the top-level directory.
+
+include $(ADK_TOPDIR)/rules.mk
+
+PKG_NAME:=		miniinit
+PKG_VERSION:=		1.0
+PKG_RELEASE:=		1
+PKG_DESCR:=		minimal init
+PKG_SECTION:=		base/init
+
+NO_DISTFILES:=		1
+
+include $(ADK_TOPDIR)/mk/package.mk
+
+$(eval $(call PKG_template,MINIINIT,miniinit,$(PKG_VERSION)-$(PKG_RELEASE),$(PKG_DEPENDS),$(PKG_DESCR),$(PKG_SECTION)))
+
+CONFIG_STYLE:=		manual
+BUILD_STYLE:=		manual
+INSTALL_STYLE:=		manual
+
+do-build:
+	PATH='$(HOST_PATH)' \
+	$(TARGET_CC) $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(TARGET_LDFLAGS) \
+		-o $(WRKBUILD)/miniinit $(WRKBUILD)/miniinit.c
+
+do-install:
+	$(INSTALL_DIR) $(IDIR_MINIINIT)/sbin
+	$(INSTALL_BIN) $(WRKBUILD)/miniinit $(IDIR_MINIINIT)/sbin/init
+
+include $(ADK_TOPDIR)/mk/pkg-bottom.mk
diff --git a/package/miniinit/src/miniinit.c b/package/miniinit/src/miniinit.c
new file mode 100644
index 000000000..69ad095c6
--- /dev/null
+++ b/package/miniinit/src/miniinit.c
@@ -0,0 +1,44 @@
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+int main() 
+{
+  pid_t pid;
+
+  printf("Started OpenADK miniinit\n");
+  putenv("TERM=vt102");
+
+  // Redirect stdio to /dev/console
+  close(0);
+  close(1);
+  close(2);
+  open("/dev/console", O_RDWR); // stdin
+  dup(0); // stdout
+  dup(0); // stderr
+
+  pid = vfork();
+  if (pid == 0) {
+    setsid(); //new session
+    putenv("HOME=/");
+    putenv("PATH=/sbin:/usr/sbin:/bin:/usr/bin");
+    putenv("SHELL=/bin/sh");
+    putenv("USER=root");
+    // Child: start a shell (e.g., /bin/sh)
+    execl("/bin/sh", "/bin/sh", "-l", NULL);
+    perror("execl");
+    exit(1);
+  } else if (pid > 0) {
+    // Parent: wait for child to exit
+    int status;
+    waitpid(pid, &status, 0);
+    printf("Shell exited, shutting down\n");	  
+  } else if (pid < 0) {
+    printf("vfork failed");
+    sleep(1);
+    return 0;
+  }
+  _exit(0);
+}
diff --git a/package/toybox/files/config b/package/toybox/files/config
index 8d5769f78..5a14b8dd2 100644
--- a/package/toybox/files/config
+++ b/package/toybox/files/config
@@ -134,7 +134,7 @@ CONFIG_GETTY=y
 # CONFIG_GROUPDEL is not set
 # CONFIG_HEXDUMP is not set
 # CONFIG_HD is not set
-CONFIG_INIT=y
+# CONFIG_INIT is not set
 # CONFIG_IP is not set
 # CONFIG_IPCRM is not set
 # CONFIG_IPCS is not set
diff --git a/target/config/Config.in.runtime b/target/config/Config.in.runtime
index 44b14db99..e1a5600f6 100644
--- a/target/config/Config.in.runtime
+++ b/target/config/Config.in.runtime
@@ -30,6 +30,10 @@ config ADK_RUNTIME_INIT_SIMPLEINIT
 	bool "Use a very simple init"
 	select ADK_PACKAGE_SIMPLEINIT
 
+config ADK_RUNTIME_INIT_MINIINIT
+	bool "Use a minimal init"
+	select ADK_PACKAGE_MINIINIT
+
 endchoice
 
 choice
-- 
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