67 lines
2.2 KiB
Bash
Executable file
67 lines
2.2 KiB
Bash
Executable file
#!/bin/sh
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# Ensure "df --total" computes accurate totals
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# Copyright (C) 2008-2025 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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print_ver_ df
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require_perl_
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# Protect against inaccessible remote mounts etc.
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timeout 10 df || skip_ "df fails"
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cat <<\EOF > check-df || framework_failure_
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my ($total, $used, $avail) = (0, 0, 0);
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while (<>)
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{
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$. == 1
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and next; # skip first (header) line
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# Recognize df output lines like these:
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# /dev/sdc1 0 0 0 - /c
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# tmpfs 1536000 12965 1523035 1% /tmp
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# total 5285932 787409 4498523 15% -
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/^(.*?) +(-?\d+|-) +(-?\d+|-) +(-?\d+|-) +(?:-|[0-9]+%) (.*)$/
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or die "$0: invalid input line\n: $_";
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if ($1 eq 'total' && $5 eq '-')
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{
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$total == $2 or die "$total != $2";
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$used == $3 or die "$used != $3";
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$avail == $4 or die "$avail != $4";
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my $line = <>;
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defined $line
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and die "$0: extra line(s) after totals\n";
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exit 0;
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}
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$total += $2 unless $2 eq '-';
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$used += $3 unless $3 eq '-';
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$avail += $4 unless $4 eq '-';
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}
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die "$0: missing line of totals\n";
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EOF
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# Use --block-size=512 to keep df from printing rounded-to-kilobyte
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# numbers which wouldn't necessarily add up to the displayed total.
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df --total -P --block-size=512 > space || framework_failure_
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cat space # this helps when debugging any test failure
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df --total -i -P > inode || framework_failure_
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cat inode
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$PERL check-df space || fail=1
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$PERL check-df inode || fail=1
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test "$fail" = 1 && dump_mount_list_
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Exit $fail
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