tests: kill: check that real-time signals are listed

* tests/misc/kill.sh: Call getlimits_. Check for RTMIN and RTMAX in the
output of 'kill -l' if the system defines SIGRTMIN and SIGRTMAX.

diff --git a/tests/misc/kill.sh b/tests/misc/kill.sh
index 4f9c11ab7143f0acf8f7f5c0c736718139f3c4a9..0dbe46b8f6ebe95608acc4da3eaea94f3885362f 100755 (executable)
--- a/tests/misc/kill.sh
+++ b/tests/misc/kill.sh
@@ -18,6 +18,7 @@
 
 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
 print_ver_ kill seq
+getlimits_
 
 # params required
 returns_ 1 env kill || fail=1
@@ -71,4 +72,16 @@ env kill -t -- $SIG_SEQ || fail=1
 # Verify first signal number listed is 0
 test $(env kill -l $(env kill -l | head -n1)) = 0 || fail=1
 
+# If the system's signal.h defines SIGRTMIN and SIGRTMAX, assume that real-time
+# signals are supported.
+if test $SIGRTMIN -gt 0 && test $SIGRTMAX -gt $SIGRTMIN; then
+  rtmin=$(env kill -l | grep -c '^RTMIN')
+  rtmax=$(env kill -l | grep -c '^RTMAX')
+  # We only check that at least RTMIN and RTMAX are listed in the output.
+  # POSIX states the range of signals between SIGRTMIN and SIGRTMAX are
+  # reserved for real-time signals, but does not require that all signals
+  # in the range are usable.
+  test $rtmin -gt 0 && test $rtmax -gt 0 || fail=1
+fi
+
 Exit $fail