From 8ffec2a3aba6f114784e11f89ef1d57a096ae540 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sat, 27 Apr 2024 19:39:29 +0200
Subject: Adding upstream version 8.32.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 tests/tail-2/pipe-f.sh | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100755 tests/tail-2/pipe-f.sh

(limited to 'tests/tail-2/pipe-f.sh')

diff --git a/tests/tail-2/pipe-f.sh b/tests/tail-2/pipe-f.sh
new file mode 100755
index 0000000..fdd6168
--- /dev/null
+++ b/tests/tail-2/pipe-f.sh
@@ -0,0 +1,63 @@
+#!/bin/sh
+# ensure that tail -f doesn't hang in various cases
+
+# Copyright (C) 2009-2020 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_ tail test
+trap_sigpipe_or_skip_
+
+# Speedup the non inotify case
+fastpoll='-s.1 --max-unchanged-stats=1'
+
+for mode in '' '---disable-inotify'; do
+# Ensure :|tail -f doesn't hang, per POSIX
+echo oo > exp || framework_failure_
+echo foo | timeout 10 tail -f $mode $fastpoll -c3 > out || fail=1
+compare exp out || fail=1
+cat <<\EOF > exp || framework_failure_
+==> standard input <==
+ar
+EOF
+echo bar | returns_ 1 \
+ timeout 10 tail -f $mode $fastpoll -c3 - missing > out || fail=1
+compare exp out || fail=1
+
+# This would wait indefinitely before v8.28 due to no EPIPE being
+# generated due to no data written after the first small amount.
+# Also check tail exits if SIGPIPE is being ignored.
+# Note 'trap - SIGPIPE' is ineffective if the initiating shell
+# has ignored SIGPIPE, but that's not the normal case.
+for disposition in '' '-'; do
+  (trap "$disposition" PIPE;
+   returns_ 124 timeout 10 \
+    tail -n2 -f $mode $fastpoll out && touch timed_out) |
+  sed 2q > out2
+  test -e timed_out && fail=1
+  compare exp out2 || fail=1
+  rm -f timed_out
+done
+
+# This would wait indefinitely before v8.28 (until first write)
+# test -w /dev/stdout is used to check that >&- is effective
+# which was seen not to be the case on NetBSD 7.1 / x86_64:
+if env test -w /dev/stdout >/dev/null &&
+   env test ! -w /dev/stdout >&-; then
+  (returns_ 1 timeout 10 tail -f $mode $fastpoll /dev/null >&-) || fail=1
+fi
+done
+
+Exit $fail
-- 
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