rt-tests: pip - Use check_privs() from the rt-utils library.

Use check_privs() from the rt-utils library to make sure that the user is
running with real-time privileges for the pip test program.

Signed-off-by: John Kacur <jkacur@redhat.com>

Makefile

@@ -63,7 +63,7 @@ svsematest: svsematest.o rt-utils.o rt-get_cpu.o
 sendme: sendme.o rt-utils.o rt-get_cpu.o
 	$(CC) $(CFLAGS) -o $@ $^ $(LIBS) $(EXTRA_LIBS)
 
-pip: pip.o error.o
+pip: pip.o error.o rt-utils.o
 	$(CC) $(CFLAGS) -o $@ $^ $(LIBS)
 
 CLEANUP  = $(TARGETS) *.o .depend *.*~ *.orig *.rej rt-tests.spec

src/include/pip.h

@@ -13,6 +13,7 @@
 #include <sys/wait.h>
 #include <signal.h>
 #include <sched.h>
+#include <rt-utils.h>
 #include "error.h"
 
 void low(pid_t pid);	/* low priority process */

src/pi_tests/pip.c

@@ -83,6 +83,9 @@ int main(void)
 
 	*minimum_priority = sched_get_priority_min(policy);
 
+	if (check_privs())
+		exit(-1);
+
 	mptr = mmap_page();	/* Get a page of shared memory */
 	resource = (pthread_mutex_t*)mptr;	/* point our lock to it */
 	mptr += sizeof(pthread_mutex_t);	/* advance the memory pointer */