1 /* root-dev-ino.c -- get the device and inode numbers for '/'. 2 Copyright (C) 2003-2023 Free Software Foundation, Inc. 3 4 This program is free software: you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation, either version 3 of the License, or 7 (at your option) any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 16 17 /* Written by Jim Meyering. */ 18 19 #include <config.h> 20 21 #include "root-dev-ino.h" 22 23 #include <stdlib.h> 24 25 /* Call lstat to get the device and inode numbers for '/'. 26 Upon failure, return nullptr. Otherwise, set the members of 27 *ROOT_D_I accordingly and return ROOT_D_I. */ 28 struct dev_ino * get_root_dev_ino(struct dev_ino * root_d_i)29get_root_dev_ino (struct dev_ino *root_d_i) 30 { 31 struct stat statbuf; 32 if (lstat ("/", &statbuf)) 33 return nullptr; 34 root_d_i->st_ino = statbuf.st_ino; 35 root_d_i->st_dev = statbuf.st_dev; 36 return root_d_i; 37 } 38