| # Ensure that df dereferences symlinks to file system nodes | |
| # Copyright (C) 2013-2025 Free Software Foundation, Inc. | |
| # This program is free software: you can redistribute it and/or modify | |
| # it under the terms of the GNU General Public License as published by | |
| # the Free Software Foundation, either version 3 of the License, or | |
| # (at your option) any later version. | |
| # 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. | |
| # You should have received a copy of the GNU General Public License | |
| # along with this program. If not, see <https://www.gnu.org/licenses/>. | |
| . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src | |
| print_ver_ df | |
| file_system=$(df --out=source '.' | tail -n1) || | |
| skip_ "cannot determine '.' file system" | |
| ln -s "$file_system" symlink || framework_failure_ | |
| df --out=source,target "$file_system" > exp || | |
| skip_ "cannot get info for $file_system" | |
| df --out=source,target symlink > out || fail=1 | |
| compare exp out || fail=1 | |
| # Ensure we output the same values for device nodes and '.' | |
| # This was not the case in coreutils-8.22 on systems | |
| # where the device in the mount list was a symlink itself. | |
| # I.e., '.' => /dev/mapper/fedora-home -> /dev/dm-2 | |
| # Restrict this test to systems with a 1:1 mapping between | |
| # source and target. This excludes for example BTRFS sub-volumes. | |
| if test "$(df --output=source | grep -F "$file_system" | wc -l)" = 1; then | |
| # Restrict to systems with a single file system root (and have findmnt(1)) | |
| if test "$(findmnt -nro FSROOT | uniq | wc -l)" = 1; then | |
| df --out=source,target '.' > out || fail=1 | |
| compare exp out || fail=1 | |
| fi | |
| fi | |
| test "$fail" = 1 && dump_mount_list_ | |
| Exit $fail | |