From bf9e5005b66c3e1219340837d3c29443dd0fb4e1 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Thu, 4 Jul 2024 23:44:14 -0400
Subject: kernel: init_main: Startup PID 1
Signed-off-by: Ian Moffett <ian@osmora.org>
---
sys/kern/init_main.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/sys/kern/init_main.c b/sys/kern/init_main.c
index a5bdf1c..02e8705 100644
--- a/sys/kern/init_main.c
+++ b/sys/kern/init_main.c
@@ -32,13 +32,31 @@
#include <sys/sched.h>
#include <sys/mount.h>
#include <sys/proc.h>
+#include <sys/exec.h>
+#include <sys/panic.h>
#include <dev/cons/cons.h>
#include <dev/acpi/acpi.h>
#include <machine/cpu.h>
#include <vm/vm.h>
+#include <string.h>
static struct proc proc0;
+static void
+start_init(void)
+{
+ struct proc *td = this_td();
+ struct execve_args execve_args;
+ char *argv[] = { "/usr/sbin/init", NULL };
+ char *envp[] = { NULL };
+
+ execve_args.pathname = argv[0];
+ execve_args.argv = argv;
+ execve_args.envp = envp;
+ if (execve(td, &execve_args) != 0)
+ panic("Failed to load init\n");
+}
+
int
main(void)
{
@@ -63,6 +81,10 @@ main(void)
sched_init();
mp_bootstrap_aps(&g_bsp_ci);
+ /* Startup init */
+ memset(&proc0, 0, sizeof(proc0.tf));
+ fork1(&proc0, 0, start_init, NULL);
+
/* Nothing left to do... halt */
cpu_reboot(REBOOT_HALT);
__builtin_unreachable();
--
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