static int hyper_container_init(void *data)
{
struct hyper_container_arg *arg = data;
struct hyper_container *container = arg->c;
char root[512], oldroot[512];
fprintf(stdout, "%s in\n", __func__);
if (container->exec.argv == NULL) {
fprintf(stdout, "no cmd!\n");
goto fail;
}
if (setns(arg->ipcns, CLONE_NEWIPC) < 0) {
perror("setns to ipcns of pod init faild");
goto fail;
}
if (setns(arg->utsns, CLONE_NEWUTS) < 0) {
perror("setns to ipcns of pod init faild");
goto fail;
}
if (hyper_rescan_scsi() < 0) {
fprintf(stdout, "rescan scsi failed\n");
goto fail;
}
if (hyper_setup_env(container->envs, container->envs_num) < 0) {
fprintf(stdout, "setup env failed\n");
goto fail;
}
if (mount("", "/", NULL, MS_SLAVE|MS_REC, NULL) < 0) {
perror("mount SLAVE failed");
goto fail;
}
if (mount("", "/", NULL, MS_PRIVATE|MS_REC, NULL) < 0) {
perror("mount PRIVATE failed");
goto fail;
}
sprintf(root, "/tmp/hyper/%s/root/", container->id);
if (hyper_mkdir(root) < 0) {
perror("make root directroy failed");
goto fail;
}
fprintf(stdout, "container root directory %s\n", root);
if (container->fstype) {
char dev[128];
sprintf(dev, "/dev/%s", container->image);
fprintf(stdout, "device %s\n", dev);
if (mount(dev, root, container->fstype, 0, NULL) < 0) {
perror("mount device failed");
goto fail;
}
} else {
char path[512];
sprintf(path, "/tmp/hyper/shared/%s/", container->image);
fprintf(stdout, "src directory %s\n", path);
if (mount(path, root, NULL, MS_BIND, NULL) < 0) {
perror("mount src dir failed");
goto fail;
}
}
fprintf(stdout, "root directory for container is %s/%s, init task %s\n",
root, container->rootfs, container->exec.argv[0]);
sprintf(oldroot, "%s/%s/.oldroot", root, container->rootfs);
if (hyper_mkdir(oldroot) < 0) {
perror("make oldroot directroy failed");
goto fail;
}
if (mount("/", oldroot, NULL, MS_BIND|MS_REC, NULL) < 0) {
perror("bind oldroot failed");
goto fail;
}
/* reuse oldroot array */
sprintf(oldroot, "%s/%s/", root, container->rootfs);
/* pivot_root won't work, see
* Documention/filesystem/ramfs-rootfs-initramfs.txt */
chroot(oldroot);
chdir("/");
if (container_setup_volume(container) < 0) {
fprintf(stderr, "container sets up voulme failed\n");
goto fail;
}
if (container_setup_mount(container) < 0) {
fprintf(stderr, "container sets up mount failed\n");
goto fail;
}
if (container_setup_sysctl(container) < 0) {
fprintf(stderr, "container sets up sysctl failed\n");
goto fail;
}
if (container_setup_dns(container) < 0) {
fprintf(stderr, "container sets up dns failed\n");
goto fail;
}
if (container_setup_workdir(container) < 0) {
fprintf(stderr, "container sets up work directory failed\n");
goto fail;
}
container_unmount_oldroot("/.oldroot");
fflush(stdout);
if (container_setup_tty(arg->pipe[1], container) < 0) {
fprintf(stdout, "setup tty failed\n");
goto fail;
}
symlink("/proc/self/fd", "/dev/fd");
symlink("/proc/self/fd/0", "/dev/stdin");
symlink("/proc/self/fd/1", "/dev/stdout");
symlink("/proc/self/fd/2", "/dev/stderr");
execvp(container->exec.argv[0], container->exec.argv);
perror("exec container command failed");
_exit(-1);
fail:
hyper_send_type(arg->pipe[1], ERROR);
_exit(-1);
}
static int hyper_container_init(void *data)
{
struct hyper_container_arg *arg = data;
struct hyper_container *container = arg->c;
char root[512], oldroot[512];
fprintf(stdout, "%s in\n", __func__);
if (container->exec.argv == NULL) {
fprintf(stdout, "no cmd!\n");
goto fail;
}
if (hyper_rescan_scsi() < 0) {
fprintf(stdout, "rescan scsi failed\n");
goto fail;
}
if (container_setup_env(container) < 0) {
fprintf(stdout, "setup env failed\n");
goto fail;
}
if (mount("", "/", NULL, MS_SLAVE|MS_REC, NULL) < 0) {
perror("mount SLAVE failed");
goto fail;
}
if (mount("", "/", NULL, MS_PRIVATE|MS_REC, NULL) < 0) {
perror("mount PRIVATE failed");
goto fail;
}
sprintf(root, "/tmp/hyper/%s/root/", container->id);
if (hyper_mkdir(root) < 0) {
perror("make root directroy failed");
goto fail;
}
fprintf(stdout, "container root directory %s\n", root);
if (container->fstype) {
char dev[128];
sprintf(dev, "/dev/%s", container->image);
fprintf(stdout, "device %s\n", dev);
if (mount(dev, root, container->fstype, 0, NULL) < 0) {
perror("mount device failed");
goto fail;
}
} else {
char path[512];
sprintf(path, "/tmp/hyper/shared/%s/", container->image);
fprintf(stdout, "src directory %s\n", path);
if (mount(path, root, NULL, MS_BIND, NULL) < 0) {
perror("mount src dir failed");
goto fail;
}
}
fprintf(stdout, "root directory for container is %s/%s, init task %s\n",
root, container->rootfs, container->exec.argv[0]);
hyper_list_dir(root);
sprintf(oldroot, "%s/%s/.oldroot", root, container->rootfs);
if (hyper_mkdir(oldroot) < 0) {
perror("make oldroot directroy failed");
goto fail;
}
if (mount("/", oldroot, NULL, MS_BIND|MS_REC, NULL) < 0) {
perror("bind oldroot failed");
goto fail;
}
/* reuse oldroot array */
sprintf(oldroot, "%s/%s/", root, container->rootfs);
/* pivot_root won't work, see
* Documention/filesystem/ramfs-rootfs-initramfs.txt */
chroot(oldroot);
chdir("/");
if (container_setup_volume(container) < 0) {
fprintf(stderr, "container sets up voulme failed\n");
goto fail;
}
if (container_setup_mount(container) < 0) {
fprintf(stderr, "container sets up mount ns failed\n");
goto fail;
}
if (container_setup_workdir(container) < 0) {
fprintf(stderr, "container sets up work directory failed\n");
goto fail;
}
container_unmount_oldroot("/.oldroot");
fflush(stdout);
if (container_setup_tty(arg->pipe[1], container) < 0) {
fprintf(stdout, "setup tty failed\n");
goto fail;
}
close(arg->pipe[0]);
close(arg->pipe[1]);
execvp(container->exec.argv[0], container->exec.argv);
_exit(-1);
fail:
container->exec.code = -1;
hyper_send_type_block(arg->pipe[1], ERROR, 0);
_exit(-1);
}