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#define _GNU_SOURCE
#define __EXPORTED_HEADERS__
#include <linux/membarrier.h>
#include <asm-generic/unistd.h>
#include <sys/syscall.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include "../kselftest.h"
static int sys_membarrier(int cmd, int flags)
{
return syscall(__NR_membarrier, cmd, flags);
}
static void test_membarrier_fail(void)
{
int cmd = -1, flags = 0;
if (sys_membarrier(cmd, flags) != -1) {
printf("membarrier: Should fail but passed\n");
ksft_exit_fail();
}
}
static void test_membarrier_success(void)
{
int flags = 0;
if (sys_membarrier(MEMBARRIER_CMD_SHARED, flags) != 0) {
printf("membarrier: Executing MEMBARRIER failed, %s\n",
strerror(errno));
ksft_exit_fail();
}
printf("membarrier: MEMBARRIER_CMD_SHARED success\n");
}
static void test_membarrier(void)
{
test_membarrier_fail();
test_membarrier_success();
}
static int test_membarrier_exists(void)
{
int flags = 0;
if (sys_membarrier(MEMBARRIER_CMD_QUERY, flags))
return 0;
return 1;
}
int main(int argc, char **argv)
{
printf("membarrier: MEMBARRIER_CMD_QUERY ");
if (test_membarrier_exists()) {
printf("syscall implemented\n");
test_membarrier();
} else {
printf("syscall not implemented!\n");
return ksft_exit_fail();
}
printf("membarrier: tests done!\n");
return ksft_exit_pass();
}
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