void vfs_init()
{
init_rootfs();
v_root = create_empty_vnode(NULL);
v_root->v_name[0] = '/';
v_root->v_flags = V_DIR;
v_root->v_vfs = create_empty_vfs(FSTYPE_ROOTFS);
v_root->v_vfs->v_root = v_root;
vget(v_root);
//vfs_cache_init();
//btree_insert(v_cache, "/", v_root);
}
/* Prepare a root filesystem, taking mainly the contents of /usr from yumroot */
static gboolean
create_rootfs_from_yumroot_content (GFile *targetroot,
GFile *yumroot,
JsonObject *treefile,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
glnx_fd_close int src_rootfs_fd = -1;
glnx_fd_close int target_root_dfd = -1;
gs_unref_object GFile *kernel_path = NULL;
gs_unref_object GFile *initramfs_path = NULL;
gs_unref_hashtable GHashTable *preserve_groups_set = NULL;
gboolean container = FALSE;
if (!glnx_opendirat (AT_FDCWD, gs_file_get_path_cached (yumroot), TRUE,
&src_rootfs_fd, error))
goto out;
if (!_rpmostree_jsonutil_object_get_optional_boolean_member (treefile,
"container",
&container,
error))
goto out;
g_print ("Preparing kernel\n");
if (!container && !do_kernel_prep (yumroot, treefile, cancellable, error))
goto out;
g_print ("Initializing rootfs\n");
if (!init_rootfs (targetroot, cancellable, error))
goto out;
if (!glnx_opendirat (AT_FDCWD, gs_file_get_path_cached (targetroot), TRUE, &target_root_dfd, error))
goto out;
g_print ("Migrating /etc/passwd to /usr/lib/\n");
if (!rpmostree_passwd_migrate_except_root (yumroot, RPM_OSTREE_PASSWD_MIGRATE_PASSWD, NULL,
cancellable, error))
goto out;
if (json_object_has_member (treefile, "etc-group-members"))
{
JsonArray *etc_group_members = json_object_get_array_member (treefile, "etc-group-members");
preserve_groups_set = _rpmostree_jsonutil_jsarray_strings_to_set (etc_group_members);
}
g_print ("Migrating /etc/group to /usr/lib/\n");
if (!rpmostree_passwd_migrate_except_root (yumroot, RPM_OSTREE_PASSWD_MIGRATE_GROUP,
preserve_groups_set,
cancellable, error))
goto out;
/* NSS configuration to look at the new files */
{
gs_unref_object GFile *yumroot_etc =
g_file_resolve_relative_path (yumroot, "etc");
if (!replace_nsswitch (yumroot_etc, cancellable, error))
goto out;
}
/* We take /usr from the yum content */
g_print ("Moving /usr to target\n");
{
gs_unref_object GFile *usr = g_file_get_child (yumroot, "usr");
if (!move_to_dir (usr, targetroot, cancellable, error))
goto out;
}
/* Except /usr/local -> ../var/usrlocal */
g_print ("Linking /usr/local -> ../var/usrlocal\n");
{
gs_unref_object GFile *target_usrlocal =
g_file_resolve_relative_path (targetroot, "usr/local");
if (!gs_shutil_rm_rf (target_usrlocal, cancellable, error))
goto out;
if (!g_file_make_symbolic_link (target_usrlocal, "../var/usrlocal",
cancellable, error))
goto out;
}
/* And now we take the contents of /etc and put them in /usr/etc */
g_print ("Moving /etc to /usr/etc\n");
{
gs_unref_object GFile *yumroot_etc =
g_file_get_child (yumroot, "etc");
gs_unref_object GFile *target_usretc =
g_file_resolve_relative_path (targetroot, "usr/etc");
if (!gs_file_rename (yumroot_etc, target_usretc,
cancellable, error))
goto out;
}
if (!migrate_rpm_and_yumdb (targetroot, yumroot, cancellable, error))
goto out;
if (!convert_var_to_tmpfiles_d (src_rootfs_fd, target_root_dfd, cancellable, error))
goto out;
/* Move boot, but rename the kernel/initramfs to have a checksum */
if (!container)
{
gs_unref_object GFile *yumroot_boot =
g_file_get_child (yumroot, "boot");
gs_unref_object GFile *target_boot =
g_file_get_child (targetroot, "boot");
gs_unref_object GFile *target_usrlib =
g_file_resolve_relative_path (targetroot, "usr/lib");
gs_unref_object GFile *target_usrlib_ostree_boot =
g_file_resolve_relative_path (target_usrlib, "ostree-boot");
RpmOstreePostprocessBootLocation boot_location =
RPMOSTREE_POSTPROCESS_BOOT_LOCATION_BOTH;
const char *boot_location_str = NULL;
g_print ("Moving /boot\n");
if (!_rpmostree_jsonutil_object_get_optional_string_member (treefile,
"boot_location",
&boot_location_str, error))
goto out;
if (boot_location_str != NULL)
{
if (strcmp (boot_location_str, "legacy") == 0)
boot_location = RPMOSTREE_POSTPROCESS_BOOT_LOCATION_LEGACY;
else if (strcmp (boot_location_str, "both") == 0)
boot_location = RPMOSTREE_POSTPROCESS_BOOT_LOCATION_BOTH;
else if (strcmp (boot_location_str, "new") == 0)
boot_location = RPMOSTREE_POSTPROCESS_BOOT_LOCATION_NEW;
else
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Invalid boot location '%s'", boot_location_str);
goto out;
}
}
if (!gs_file_ensure_directory (target_usrlib, TRUE, cancellable, error))
goto out;
switch (boot_location)
{
case RPMOSTREE_POSTPROCESS_BOOT_LOCATION_LEGACY:
{
g_print ("Using boot location: legacy\n");
if (!gs_file_rename (yumroot_boot, target_boot, cancellable, error))
goto out;
}
break;
case RPMOSTREE_POSTPROCESS_BOOT_LOCATION_BOTH:
{
g_print ("Using boot location: both\n");
if (!gs_file_rename (yumroot_boot, target_boot, cancellable, error))
goto out;
/* Hardlink the existing content, only a little ugly as
* we'll end up sha256'ing it twice, but oh well. */
if (!gs_shutil_cp_al_or_fallback (target_boot, target_usrlib_ostree_boot, cancellable, error))
goto out;
}
break;
case RPMOSTREE_POSTPROCESS_BOOT_LOCATION_NEW:
{
g_print ("Using boot location: new\n");
if (!gs_file_rename (yumroot_boot, target_usrlib_ostree_boot, cancellable, error))
goto out;
}
break;
}
}
/* Also carry along toplevel compat links */
g_print ("Copying toplevel compat symlinks\n");
{
guint i;
const char *toplevel_links[] = { "lib", "lib64", "lib32",
"bin", "sbin"
};
for (i = 0; i < G_N_ELEMENTS (toplevel_links); i++)
{
gs_unref_object GFile *srcpath =
g_file_get_child (yumroot, toplevel_links[i]);
if (g_file_query_file_type (srcpath, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, NULL) == G_FILE_TYPE_SYMBOLIC_LINK)
{
if (!move_to_dir (srcpath, targetroot, cancellable, error))
goto out;
}
}
}
g_print ("Adding tmpfiles-ostree-integration.conf\n");
{
gs_unref_object GFile *src_pkglibdir = g_file_new_for_path (PKGLIBDIR);
gs_unref_object GFile *src_tmpfilesd =
g_file_get_child (src_pkglibdir, "tmpfiles-ostree-integration.conf");
gs_unref_object GFile *target_tmpfilesd =
g_file_resolve_relative_path (targetroot, "usr/lib/tmpfiles.d/tmpfiles-ostree-integration.conf");
gs_unref_object GFile *target_tmpfilesd_parent = g_file_get_parent (target_tmpfilesd);
if (!gs_file_ensure_directory (target_tmpfilesd_parent, TRUE, cancellable, error))
goto out;
if (!g_file_copy (src_tmpfilesd, target_tmpfilesd, 0,
cancellable, NULL, NULL, error))
goto out;
}
ret = TRUE;
out:
return ret;
}
