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tests/head/head-write-error.sh
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Pádraig Brady
tests: use system ENOSPC message
18 фев 2026, 21:31
18 фев 2026, 21:31
798f94c
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#!/bin/sh # Ensure we diagnose and not continue writing to # the output if we get a write error. # Copyright (C) 2014-2026 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_ head getlimits_ if ! test -w /dev/full || ! test -c /dev/full; then skip_ '/dev/full is required' fi # We can't use /dev/zero as that's bypassed in the --lines case # due to lseek() indicating it has a size of zero. yes | head -c10M > bigseek || framework_failure_ # This is the single output diagnostic expected, printf '%s\n' "head: error writing 'standard output': $ENOSPC" > exp # Memory is bounded in these cases for item in lines bytes; do for N in 0 1; do # pipe case yes | returns_ 1 timeout 10s head --$item=-$N > /dev/full 2> err || fail=1 compare exp err || fail=1 # seekable case returns_ 1 timeout 10s head --$item=-$N bigseek > /dev/full 2> err \ || fail=1 compare exp err || fail=1 done done Exit $fail