From c4334184502c25a41b5cab060681229b2b570c0a Mon Sep 17 00:00:00 2001 From: Tavian Barnes Date: Thu, 1 Feb 2024 16:14:19 -0500 Subject: tests: Don't clobber inherited FDs Rather than attempting to close any unexpected FDs, just count them and adjust our ulimit -n calls to account for them. --- .github/workflows/ci.yml | 1 + tests/bfs/deep_strict.sh | 2 +- tests/common/execdir_ulimit.sh | 2 +- tests/gnu/execdir_ulimit.out | 32 ++++++++++++++++---------------- tests/gnu/execdir_ulimit.sh | 2 +- tests/gnu/printf_u_g_ulimit.sh | 2 +- tests/posix/deep.sh | 2 +- tests/posix/exec_ulimit.out | 32 ++++++++++++++++---------------- tests/posix/exec_ulimit.sh | 2 +- tests/posix/nogroup_ulimit.sh | 2 +- tests/posix/nouser_ulimit.sh | 2 +- tests/util.sh | 17 +++++------------ 12 files changed, 46 insertions(+), 52 deletions(-) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index ff0ff6f..8e96526 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -86,6 +86,7 @@ jobs: tcl-wrapper pw useradd -n action -m -G wheel -s /usr/local/bin/bash echo "%wheel ALL=(ALL) NOPASSWD: ALL" >>/usr/local/etc/sudoers + mount -t fdescfs none /dev/fd run: | chown -R action:action . diff --git a/tests/bfs/deep_strict.sh b/tests/bfs/deep_strict.sh index 50c8f05..22453c0 100644 --- a/tests/bfs/deep_strict.sh +++ b/tests/bfs/deep_strict.sh @@ -1,3 +1,3 @@ # Not even enough fds to keep the root open -ulimit -n 7 +ulimit -n $((NOPENFD + 4)) bfs_diff deep -type f -exec bash -c 'echo "${1:0:6}/.../${1##*/} (${#1})"' bash {} \; diff --git a/tests/common/execdir_ulimit.sh b/tests/common/execdir_ulimit.sh index 90c93c1..122c282 100644 --- a/tests/common/execdir_ulimit.sh +++ b/tests/common/execdir_ulimit.sh @@ -2,5 +2,5 @@ cd "$TEST" mkdir -p a/b/c/d/e/f/g/h/i/j/k/l/m/n/o/p/q/r/s/t/u/v/w/x/y/z mkdir -p a/b/c/d/e/f/g/h/i/j/k/l/m/0/1/2/3/4/5/6/7/8/9/A/B/C -ulimit -n 13 +ulimit -n $((NOPENFD + 10)) bfs_diff . -execdir echo {} \; diff --git a/tests/gnu/execdir_ulimit.out 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b/tests/gnu/printf_u_g_ulimit.sh @@ -1,2 +1,2 @@ -ulimit -n 16 +ulimit -n $((NOPENFD + 13)) [ "$(invoke_bfs deep -printf '%u %g\n' | uniq)" = "$(id -un) $(id -gn)" ] diff --git a/tests/posix/deep.sh b/tests/posix/deep.sh index 431705e..36a88c0 100644 --- a/tests/posix/deep.sh +++ b/tests/posix/deep.sh @@ -1,2 +1,2 @@ -ulimit -n 16 +ulimit -n $((NOPENFD + 13)) bfs_diff deep -type f -exec bash -c 'echo "${1:0:6}/.../${1##*/} (${#1})"' bash {} \; diff --git a/tests/posix/exec_ulimit.out b/tests/posix/exec_ulimit.out index 587ece2..144169e 100644 --- a/tests/posix/exec_ulimit.out +++ b/tests/posix/exec_ulimit.out @@ -1,16 +1,16 @@ -16 deep/0/.../0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDE -16 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b/tests/posix/nouser_ulimit.sh @@ -1,2 +1,2 @@ -ulimit -n 16 +ulimit -n $((NOPENFD + 13)) bfs_diff deep -type f -nouser diff --git a/tests/util.sh b/tests/util.sh index 686cc77..ec24958 100644 --- a/tests/util.sh +++ b/tests/util.sh @@ -48,23 +48,16 @@ stdenv() { export MallocNanoZone=0 fi - # Close non-standard inherited fds + # Count the inherited FDs if [ -d /proc/self/fd ]; then local fds=/proc/self/fd else local fds=/dev/fd fi - - for fd in "$fds"/*; do - if [ ! -e "$fd" ]; then - continue - fi - - local fd="${fd##*/}" - if ((fd > 2)); then - eval "exec ${fd}<&-" - fi - done + # We use ls $fds on purpose, rather than e.g. ($fds/*), to avoid counting + # internal bash fds that are not exposed to spawned processes + NOPENFD=$(ls -1q "$fds/" 2>/dev/null | wc -l) + NOPENFD=$((NOPENFD > 3 ? NOPENFD - 1 : 3)) # Close stdin so bfs doesn't think we're interactive # dup() the standard fds for logging even when redirected -- cgit v1.2.3