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/**
* minit.c - A minimal init; as stupid as it gets.
*
* Copyright (c) 2025 - Yaroslav de la Peña Smirnov <yps@yaroslavps.com>
*
* This is free software, which you can redistribute and/or modify under the
* terms of the GNU General Public License, version 2.0 only. For more
* information read the COPYING and LICENSE files provided in the original
* source repository.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <linux/reboot.h>
#include <sys/mount.h>
#include <sys/reboot.h>
#include <sys/syscall.h>
[[noreturn]]
int main(int argc, char *argv[])
{
if (argc < 2) {
puts("usage: minit <command>");
puts("more info: git.yaroslavps.com/minit/about/");
exit(1);
}
puts("=== minit v1.0.0 ===");
int rc = mount("proc", "/proc", "proc", 0, NULL);
if (rc)
puts("warning: unable to mount proc!");
rc = mount("sysfs", "/sys", "sysfs", 0, NULL);
if (rc) {
puts("warning: unable to mount sysfs!");
} else {
rc = mount("debugfs", "/sys/kernel/debug", "debugfs", 0, NULL);
if (rc)
puts("warning: unable to mount debugfs!");
}
rc = system(argv[1]);
if (rc) {
puts("the command exited with failure");
}
sync();
rc = reboot(LINUX_REBOOT_CMD_HALT);
/* If we made it here something went wrong with the reboot command */
exit(rc);
}
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