From 0713cbce696c7cd43c4dc6b51a22023d1978861c Mon Sep 17 00:00:00 2001
From: Bruce Leidl <bruce@subgraph.com>
Date: Wed, 18 Oct 2017 19:14:05 +0000
Subject: [PATCH] No longer needed

---
 kernel/init/Makefile |   2 -
 kernel/init/init.c   | 136 -------------------------------------------
 2 files changed, 138 deletions(-)
 delete mode 100644 kernel/init/Makefile
 delete mode 100644 kernel/init/init.c

diff --git a/kernel/init/Makefile b/kernel/init/Makefile
deleted file mode 100644
index 0981bc6..0000000
--- a/kernel/init/Makefile
+++ /dev/null
@@ -1,2 +0,0 @@
-init: init.c
-	gcc -o init init.c
diff --git a/kernel/init/init.c b/kernel/init/init.c
deleted file mode 100644
index 21ab5e3..0000000
--- a/kernel/init/init.c
+++ /dev/null
@@ -1,136 +0,0 @@
-#include <sys/mount.h>
-#include <string.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <errno.h>
-#include <sys/stat.h>
-#include <sys/wait.h>
-#include <sys/reboot.h>
-#include <sys/syscall.h>
-
-char *splash[] = {
-"",
-"             ------------------------------||-------------------------------",
-"                                          [##]",
-"                                        /~~~~~~\\",
-"                                       |~~\\  /~~|",
-"                                ==][===|___||___|===][==",
-"                                 [::]  (   ()   )  [::]",
-"                                        ~/~~~~\\~",
-"                                       O'      `o", "",NULL
-};
-
-static int run_shell()
-{
-	char *new_argv[] = { "/bin/bash", NULL };
-	char *new_env[] = { "TERM=xterm-256color", "HOME=/home/user", NULL };
-	char **p;
-	for(p = splash; *p; p++) {
-		printf("%s\n", *p);
-	}
-
-	return execve("/bin/bash", new_argv, new_env);
-}
-
-static void do_mkdir(const char* path) {
-	if(mkdir(path, 0755) < 0) {
-		printf("mkdir %s failed: %s\n", path, strerror(errno));
-	}
-
-}
-
-static void mount_tmpfs(const char *path) {
-	if(mount("tmpfs", path, "tmpfs", 0, "mode=755") < 0) {
-		printf("mount tmpfs to %s failed: %s\n", path, strerror(errno));
-	}
-}
-
-static void pivot_root(const char *new_root, const char *put_old) {
-	if(syscall(SYS_pivot_root, new_root, put_old) < 0) {
-		printf("pivot_root failed (%s : %s) : %s\n", new_root, put_old, strerror(errno));
-	}
-}
-static void move_mount(const char *source, const char *target) {
-	if(mount(source, target, "", MS_MOVE, NULL) < 0) {
-		printf("move mount of %s to %s failed: %s\n", source, target, strerror(errno));
-	}
-}
-
-
-static void setup_overlay(void) {
-	mount_tmpfs("/tmp");
-	do_mkdir("/tmp/ro");
-	do_mkdir("/tmp/rw");
-	mount_tmpfs("/tmp/rw");
-	do_mkdir("/tmp/rw/upper");
-	do_mkdir("/tmp/rw/work");
-	do_mkdir("/tmp/overlay");
-	pivot_root("/tmp", "/tmp/ro");
-
-	/*
-	 *   /ro real root mounted here
-	 *   /rw tmpfs mounted here
-	 *   /rw/upper empty directory
-	 *   /rw/work empty directory
-	 *   /overlay empty directory
-	 *
-	 */
-	if(mount("overlay", "/overlay", "overlay", 0, "lowerdir=/ro,upperdir=/rw/upper,workdir=/rw/work") < 0) {
-		printf("mount overlay failed: %s\n", strerror(errno));
-	}
-	do_mkdir("/overlay/ro");
-	do_mkdir("/overlay/rw");
-	do_mkdir("/overlay/old-root");
-	move_mount("/ro", "/overlay/ro");
-	move_mount("/rw", "/overlay/rw");
-
-	pivot_root("/overlay", "/overlay/old-root");
-	umount("/old-root");
-	umount("/ro/tmp");
-}
-
-static void do_mounts(void)
-{
-
-	mount("sysfs", "/sys", "sysfs", 0, NULL);
-	mount("proc", "/proc", "proc", 0, NULL);
-	mount("devtmpfs", "/dev", "devtmpfs", 0, NULL);
-	mkdir("/dev/pts", 0755);
-	mount("devpts", "/dev/pts", "devpts", 0, NULL);
-}
-
-int main(int argc, char *argv[])
-{
-	pid_t child;
-	int status;
-
-	setup_overlay();
-	do_mounts();
-
-	sethostname("airwolf", 7);
-	/* get session leader */
-	setsid();
-
-	/* set controlling terminal */
-	ioctl(0, TIOCSCTTY, 1);
-
-	child = fork();
-	if (child < 0) {
-		printf("Fatal: fork() failed with %d\n", child);
-		return 0;
-	} else if (child == 0) {
-		run_shell();
-	} else {
-		pid_t corpse;
-
-		do {
-			corpse = waitpid(-1, &status, 0);
-		} while (corpse != child);
-	}
-
-	reboot(RB_AUTOBOOT);
-
-	printf("Init failed: %s\n", strerror(errno));
-
-	return 0;
-}