/*
   Copyright (c) 2006-2012 Red Hat, Inc. <http://www.redhat.com>
   This file is part of GlusterFS.

   This file is licensed to you under your choice of the GNU Lesser
   General Public License, version 3 or any later version (LGPLv3 or
   later), or the GNU General Public License, version 2 (GPLv2), in all
   cases as published by the Free Software Foundation.
*/
#include <glusterfs/glusterfs.h>
#include <glusterfs/compat.h>
#include <glusterfs/xlator.h>
#include <glusterfs/logging.h>
#include <glusterfs/common-utils.h>
#include <glusterfs/list.h>

#include "locks.h"
#include "common.h"

#define expect(cond)                                                           \
    if (!(cond)) {                                                             \
        goto out;                                                              \
    }

extern int
lock_name(pl_inode_t *, const char *, entrylk_type);
extern int
unlock_name(pl_inode_t *, const char *, entrylk_type);

int
main(int argc, char **argv)
{
    int ret = 1;
    int r = -1;

    pl_inode_t *pinode = CALLOC(sizeof(pl_inode_t), 1);
    pthread_mutex_init(&pinode->dir_lock_mutex, NULL);
    INIT_LIST_HEAD(&pinode->gf_dir_locks);

    r = lock_name(pinode, NULL, ENTRYLK_WRLCK);
    expect(r == 0);
    {
        r = lock_name(pinode, "foo", ENTRYLK_WRLCK);
        expect(r == -EAGAIN);
    }
    r = unlock_name(pinode, NULL, ENTRYLK_WRLCK);
    expect(r == 0);

    r = lock_name(pinode, "foo", ENTRYLK_RDLCK);
    expect(r == 0);
    {
        r = lock_name(pinode, "foo", ENTRYLK_RDLCK);
        expect(r == 0);
        {
            r = lock_name(pinode, "foo", ENTRYLK_WRLCK);
            expect(r == -EAGAIN);
        }
        r = unlock_name(pinode, "foo", ENTRYLK_RDLCK);
        expect(r == 0);
    }
    r = unlock_name(pinode, "foo", ENTRYLK_RDLCK);
    expect(r == 0);

    r = lock_name(pinode, "foo", ENTRYLK_WRLCK);
    expect(r == 0);
    r = unlock_name(pinode, "foo", ENTRYLK_WRLCK);
    expect(r == 0);

    r = lock_name(pinode, "baz", ENTRYLK_WRLCK);
    expect(r == 0);
    r = lock_name(pinode, "baz", ENTRYLK_RDLCK);
    expect(r == -EAGAIN);

    ret = 0;
out:
    return ret;
}