1 /* Root device and inode number checking. 2 3 Copyright (C) 2003-2023 Free Software Foundation, Inc. 4 5 This program is free software: you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation, either version 3 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 17 18 #ifndef ROOT_DEV_INO_H 19 # define ROOT_DEV_INO_H 1 20 21 # include "dev-ino.h" 22 # include "same-inode.h" 23 24 struct dev_ino * 25 get_root_dev_ino (struct dev_ino *root_d_i) _GL_ATTRIBUTE_NONNULL (); 26 27 /* These macros are common to the programs that support the 28 --preserve-root and --no-preserve-root options. */ 29 30 # define ROOT_DEV_INO_CHECK(Root_dev_ino, Dir_statbuf) \ 31 (Root_dev_ino && PSAME_INODE (Dir_statbuf, Root_dev_ino)) 32 33 # define ROOT_DEV_INO_WARN(Dirname) \ 34 do \ 35 { \ 36 if (STREQ (Dirname, "/")) \ 37 error (0, 0, _("it is dangerous to operate recursively on %s"), \ 38 quoteaf (Dirname)); \ 39 else \ 40 error (0, 0, \ 41 _("it is dangerous to operate recursively on %s (same as %s)"), \ 42 quoteaf_n (0, Dirname), quoteaf_n (1, "/")); \ 43 error (0, 0, _("use --no-preserve-root to override this failsafe")); \ 44 } \ 45 while (0) 46 47 #endif 48