* tests/misc/no-fork.sh: New file. * tests/local.mk (all_tests): Add the new test. * tests/misc/stdbuf.sh: Remove a test that is redundant with the new test. --- tests/local.mk | 1 + tests/misc/no-fork.sh | 55 +++++++++++++++++++++++++++++++++++++++++++ tests/misc/stdbuf.sh | 3 --- 3 files changed, 56 insertions(+), 3 deletions(-) create mode 100755 tests/misc/no-fork.sh
diff --git a/tests/local.mk b/tests/local.mk index 5be625f8a..d6a9b8504 100644 --- a/tests/local.mk +++ b/tests/local.mk @@ -185,6 +185,7 @@ all_tests = \ tests/misc/io-errors.sh \ tests/misc/read-errors.sh \ tests/misc/responsive.sh \ + tests/misc/no-fork.sh \ tests/misc/traversal-missing.sh \ tests/misc/tty-quoting.sh \ tests/misc/uname-labeled.sh \ diff --git a/tests/misc/no-fork.sh b/tests/misc/no-fork.sh new file mode 100755 index 000000000..c1efd1889 --- /dev/null +++ b/tests/misc/no-fork.sh @@ -0,0 +1,55 @@ +#!/bin/sh +# Test that various utilities do not fork a child process before +# executing another program. + +# Copyright (C) 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/>. + +. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src +print_ver_ true + +# List of programs that should not fork a child process. +printf '%s' '\ +chroot --skip-chdir / true +env true +nice true +nohup true +runcon "$(id -Z)" true +stdbuf -oL true +' | +sort -k 1b,1 > all_executors || framework_failure_ + +printf '%s\n' $built_programs | +sort -k 1b,1 > built_programs || framework_failure_ + +join all_executors built_programs > built_executors || framework_failure_ + +while read executor; do + executor=$(eval $executor) + (ulimit -u 0; exec $executor) 2>err || + case "$executor" in + runcon*) + grep 'runcon: runcon may be used only on a SELinux kernel' err + ;; + chroot*) + ! uid_is_privileged_ + ;; + *) + false + ;; + esac || { cat err; fail=1; } +done < built_executors + +Exit $fail diff --git a/tests/misc/stdbuf.sh b/tests/misc/stdbuf.sh index 79d15b374..170d25c5f 100755 --- a/tests/misc/stdbuf.sh +++ b/tests/misc/stdbuf.sh @@ -55,9 +55,6 @@ stdbuf -i0 -o0 -e0 true || fail=1 #check all files returns_ 126 env . && { returns_ 126 stdbuf -o1 . || fail=1; } # invalid command returns_ 127 stdbuf -o1 no_such || fail=1 # no such command -# Test that 'stdbuf' doesn't create a child process. -(ulimit -u 0; exec stdbuf -oL true) || fail=1 - # Terminate any background processes cleanup_() { kill $pid 2>/dev/null && wait $pid; } -- 2.55.0
