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execv(path, argv);
exit(EXIT_FAILURE);
}
int main(int argc, char **argv) {
int mount_ret;
/*
* Load kernel modules (drivers)
*/
mkdir("/sys", 0755);
mount("sysfs", "/sys", "sysfs", 0, NULL);
run("/bin/init-modules", "init-modules", NULL);
umount("/sys");
rmdir("/sys");
/*
* Remount root filesystem read-write
* Mount root filesystem
*/
mkdir("/dev", 0755);
mount("devtmpfs", "/dev", "devtmpfs", 0, NULL);
mkdir("/new-root", 0755);
mount("/dev/vda2", "/", "ext4", MS_REMOUNT, NULL);
mount_ret = mount("/dev/vda2", "/new-root", "ext4", 0, NULL);
if (mount_ret != 0) {
mount_ret = mount("/dev/sda2", "/new-root", "ext4", 0, NULL);
}
if (mount_ret != 0) {
mount_ret = mount("/dev/hda2", "/new-root", "ext4", 0, NULL);
}
umount("/dev");
rmdir("/dev");
if (mount_ret == 0) {
mkdir("/new-root/initramfs", 0755);
mkdir("/new-root/bin", 0755);
mkdir("/new-root/lib", 0755);
symlink("../initramfs/bin/appfsd", "/new-root/bin/appfsd");
symlink("../initramfs/bin/init", "/new-root/bin/init");
symlink("../initramfs/bin/init-modules", "/new-root/bin/init-modules");
symlink("../initramfs/bin/init-networking", "/new-root/bin/init-networking");
symlink("../initramfs/bin/appfs-cache", "/new-root/bin/appfs-cache");
symlink("../initramfs/bin/tclkit", "/new-root/bin/tclkit");
symlink("../initramfs/lib/modules", "/new-root/lib/modules");
chdir("/new-root");
mount("/", "/new-root/initramfs", "bind", MS_BIND, NULL);
chroot("/new-root");
chdir("/");
}
/*
* Mount needed filesystems
*/
mkdir("/dev", 0755);
mount("devtmpfs", "/dev", "devtmpfs", 0, NULL);
mkdir("/tmp", 0755);
mount("tmpfs", "/tmp", "tmpfs", 0, NULL);
mkdir("/proc", 0755);
mount("proc", "/proc", "proc", 0, NULL);
mkdir("/sys", 0755);
mount("sysfs", "/sys", "sysfs", 0, NULL);
/*
* Setup networking
*/
run("/bin/init-networking", "init-networking", NULL);
run("/bin/init-fuse", "init-fuse", NULL);
mount("/dev/vda3", "/var/cache/appfs", "ext4", 0, NULL);
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run("/bin/appfs-cache", "appfs-cache", "install", "-lib", "core.appfs.rkeene.org", "glibc", NULL);
run("/bin/appfs-cache", "appfs-cache", "install", "core.appfs.rkeene.org", "coreutils", NULL);
run("/bin/appfs-cache", "appfs-cache", "install", "core.appfs.rkeene.org", "procps-ng", NULL);
setenv("PATH", "/bin", 1);
run("/bin/sh", "sh", NULL);
/*
* Remount root filesystem read-only
*/
umount("/dev");
umount("/tmp");
umount("/proc");
umount("/sys");
umount("/opt/appfs");
umount("/var/cache/appfs");
mount("/dev/vda2", "/", "ext4", MS_REMOUNT | MS_RDONLY, NULL);
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