tests: add sched_get_priority_mxx.test

* tests/sched_get_priority_mxx.c: New file.
* tests/sched_get_priority_mxx.test: New test.
* tests/.gitignore: Add sched_get_priority_mxx.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(TESTS): Add sched_get_priority_mxx.test.

tests/.gitignore

@@ -95,6 +95,7 @@ rt_sigqueueinfo
 rt_sigsuspend
 rt_sigtimedwait
 rt_tgsigqueueinfo
+sched_get_priority_mxx
 sched_xetaffinity
 sched_xetattr
 scm_rights

tests/Makefile.am

@@ -143,6 +143,7 @@ check_PROGRAMS = \
 	rt_sigsuspend \
 	rt_sigtimedwait \
 	rt_tgsigqueueinfo \
+	sched_get_priority_mxx \
 	sched_xetaffinity \
 	sched_xetattr \
 	scm_rights \
@@ -308,6 +309,7 @@ TESTS = \
 	rt_sigsuspend.test \
 	rt_sigtimedwait.test \
 	rt_tgsigqueueinfo.test \
+	sched_get_priority_mxx.test \
 	sched_xetaffinity.test \
 	sched_xetattr.test \
 	scm_rights-fd.test \

tests/sched_get_priority_mxx.c

@@ -0,0 +1,29 @@
+#include "tests.h"
+#include <sys/syscall.h>
+
+#if defined(__NR_sched_get_priority_min) \
+ && defined(__NR_sched_get_priority_max)
+
+# include <sched.h>
+# include <stdio.h>
+# include <unistd.h>
+
+int
+main(void)
+{
+	int rc = syscall(__NR_sched_get_priority_min, SCHED_FIFO);
+	printf("sched_get_priority_min(SCHED_FIFO) = %d\n", rc);
+
+	rc = syscall(__NR_sched_get_priority_max, SCHED_RR);
+	printf("sched_get_priority_max(SCHED_RR) = %d\n", rc);
+
+	puts("+++ exited with 0 +++");
+	return 0;
+}
+
+#else
+
+SKIP_MAIN_UNDEFINED("__NR_sched_get_priority_min"
+                    " && defined __NR_sched_get_priority_max");
+
+#endif

tests/sched_get_priority_mxx.test

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+# Check sched_get_priority_min and sched_get_priority_max syscalls decoding.
+
+. "${srcdir=.}/init.sh"
+
+run_prog > /dev/null
+OUT="$LOG.out"
+run_strace -esched_get_priority_min,sched_get_priority_max -a33 $args > "$OUT"
+match_diff "$LOG" "$OUT"
+rm -f "$OUT"