move files around

[project/fstools.git] / backend / extroot.c

diff --git a/backend/extroot.c b/backend/extroot.c
deleted file mode 100644 (file)
index 2ed9b37..0000000
--- a/backend/extroot.c
+++ /dev/null
@@ -1,101 +0,0 @@
-/*
- * Copyright (C) 2014 John Crispin <blogic@openwrt.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 2.1
- * as published by the Free Software Foundation
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#include <unistd.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/mount.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/wait.h>
-
-#include "../fs-state.h"
-
-char const *extroot_prefix = NULL;
-
-static int mount_extroot(void)
-{
-       char block_path[32];
-       char kmod_loader[64];
-       struct stat s;
-       pid_t pid;
-
-       if (!extroot_prefix)
-               return -1;
-
-       sprintf(block_path, "%s/sbin/block", extroot_prefix);
-
-       if (stat(block_path, &s))
-               return -1;
-
-       sprintf(kmod_loader, "/sbin/kmodloader %s/etc/modules-boot.d/ %s", extroot_prefix, extroot_prefix);
-       system(kmod_loader);
-
-       pid = fork();
-       if (!pid) {
-               mkdir("/tmp/extroot", 0755);
-               execl(block_path, block_path, "extroot", NULL);
-               exit(-1);
-       } else if (pid > 0) {
-               int status;
-
-               waitpid(pid, &status, 0);
-               if (!WEXITSTATUS(status)) {
-                       if (find_mount("/tmp/extroot/mnt")) {
-                               mount("/dev/root", "/", NULL, MS_NOATIME | MS_REMOUNT | MS_RDONLY, 0);
-
-                               mkdir("/tmp/extroot/mnt/proc", 0755);
-                               mkdir("/tmp/extroot/mnt/dev", 0755);
-                               mkdir("/tmp/extroot/mnt/sys", 0755);
-                               mkdir("/tmp/extroot/mnt/tmp", 0755);
-                               mkdir("/tmp/extroot/mnt/rom", 0755);
-
-                               if (mount_move("/tmp/extroot", "", "/mnt")) {
-                                       fprintf(stderr, "moving pivotroot failed - continue normal boot\n");
-                                       umount("/tmp/extroot/mnt");
-                               } else if (pivot("/mnt", "/rom")) {
-                                       fprintf(stderr, "switching to pivotroot failed - continue normal boot\n");
-                                       umount("/mnt");
-                               } else {
-                                       umount("/tmp/overlay");
-                                       rmdir("/tmp/overlay");
-                                       rmdir("/tmp/extroot/mnt");
-                                       rmdir("/tmp/extroot");
-                                       return 0;
-                               }
-                       } else if (find_mount("/tmp/extroot/overlay")) {
-                               if (mount_move("/tmp/extroot", "", "/overlay")) {
-                                       fprintf(stderr, "moving extroot failed - continue normal boot\n");
-                                       umount("/tmp/extroot/overlay");
-                               } else if (fopivot("/overlay", "/rom")) {
-                                       fprintf(stderr, "switching to extroot failed - continue normal boot\n");
-                                       umount("/overlay");
-                               } else {
-                                       umount("/tmp/overlay");
-                                       rmdir("/tmp/overlay");
-                                       rmdir("/tmp/extroot/overlay");
-                                       rmdir("/tmp/extroot");
-                                       return 0;
-                               }
-                       }
-               }
-       }
-       return -1;
-}
-
-static struct backend extroot_backend = {
-       .name = "extroot",
-       .mount = mount_extroot,
-};
-BACKEND(extroot_backend);