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#!/bin/sh
# Ensure we handle cfsetispeed failing
# which we did not before coreutils v9.1
# Copyright (C) 2025-2026 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/>.
. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
print_ver_ stty
require_controlling_input_terminal_
require_gcc_shared_
# Replace each cfsetispeed call with a call to these stubs.
cat > k.c <<'EOF' || framework_failure_
#include <stdio.h>
#include <errno.h>
#include <termios.h>
#include <unistd.h>
int cfsetispeed(struct termios *termios_p, speed_t speed)
{
/* Leave a marker so we can identify if the function was intercepted. */
fclose(fopen("preloaded", "w"));
errno=EINVAL;
return -1;
}
EOF
# Then compile/link it:
gcc_shared_ k.c k.so \
|| skip_ 'failed to build shared library'
( export LD_PRELOAD=$LD_PRELOAD:./k.so
returns_ 1 stty ispeed 9600 ) || fail=1
test -e preloaded || skip_ 'LD_PRELOAD interception failed'
Exit $fail
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