move user_bootstrap to user/bootstrap for consistency's sake

1 files changed, 36 insertions, 0 deletions

diff --git a/src/user/bootstrap/main.c b/src/user/bootstrap/main.c
new file mode 100644
index 0000000..5f36aa1
--- /dev/null
+++ b/src/user/bootstrap/main.c
@@ -0,0 +1,36 @@
+#include <shared/flags.h>
+#include <shared/mem.h>
+#include <shared/syscalls.h>
+#include <user/lib/elfload.h>
+#include <user/lib/fs/misc.h>
+
+#include "tar.h"
+
+extern char _bss_start;
+extern char _bss_end;
+extern char _initrd;
+
+__attribute__((section(".text.startup")))
+int main(void) {
+	_syscall_memflag(&_bss_start, &_bss_end - &_bss_start, MEMFLAG_PRESENT);
+
+	/* move everything provided by the kernel to /kdev */
+	MOUNT("/kdev/", fs_passthru(NULL));
+	if (!fork2_n_mount("/")) {
+		const char *l[] = {"/kdev/", NULL};
+		fs_whitelist(l);
+	}
+	if (!fork2_n_mount("/")) fs_dir_inject("/kdev/"); // TODO should be part of fs_whitelist
+
+	MOUNT("/init/", tar_driver(&_initrd));
+
+	void *init = tar_find("init.elf", 8, &_initrd, ~0) + 512;
+	if (init) {
+		_klogf("execing init.elf");
+		elf_exec(init);
+		_klogf("elf_exec failed");
+	} else {
+		_klogf("couldn't find init.elf");
+	}
+	_syscall_exit(1);
+}