/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*        All Rights Reserved   */

/*
 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 * Copyright 2017 Joyent, Inc.
 */

#ifndef _SYS_FS_SUBR_H
#define _SYS_FS_SUBR_H

#include <sys/types.h>
#include <sys/cred.h>
#include <sys/fcntl.h>
#include <sys/poll.h>
#include <sys/vfs.h>
#include <sys/vnode.h>
#include <vm/page.h>
#include <sys/acl.h>
#include <sys/share.h>
#include <sys/flock.h>

#ifdef  __cplusplus
extern "C" {
#endif

/*
 * Utilities shared among file system implementations.
 */

#if defined(_KERNEL) || defined(_FAKE_KERNEL)

extern int      fs_nosys();
extern int      fs_inval();
extern int      fs_notdir();
extern int      fs_nosys_syncfs(vfs_t *, uint64_t, cred_t *);
extern int      fs_nosys_map(struct vnode *, offset_t, struct as *, caddr_t *,
                        size_t, uchar_t, uchar_t, uint_t, struct cred *,
                        caller_context_t *);
extern int      fs_nosys_addmap(struct vnode *, offset_t, struct as *, caddr_t,
                        size_t, uchar_t, uchar_t, uint_t, struct cred *,
                        caller_context_t *);
extern int      fs_nosys_poll(struct vnode *, short, int, short *,
                        struct pollhead **, caller_context_t *);
extern int      fs_ioctl(vnode_t *, int, intptr_t, int, cred_t *, int *);
extern int      fs_putpage(vnode_t *, offset_t, size_t, int, cred_t *,
                        caller_context_t *);
extern int      fs_fsync(vnode_t *, int, cred_t *, caller_context_t *);
extern int      fs_sync(struct vfs *, short, cred_t *);
extern int      fs_syncfs_nop(vfs_t *, uint64_t, cred_t *);
extern int      fs_rwlock(vnode_t *, int, caller_context_t *);
extern void     fs_rwunlock(vnode_t *, int, caller_context_t *);
extern int      fs_cmp(vnode_t *, vnode_t *, caller_context_t *);
extern int      fs_seek(vnode_t *, offset_t, offset_t *, caller_context_t *);
extern int      fs_frlock(vnode_t *, int, struct flock64 *, int, offset_t,
                        struct flk_callback *, cred_t *, caller_context_t *);
extern int      fs_setfl(vnode_t *, int, int, cred_t *, caller_context_t *);
extern int      fs_poll(vnode_t *, short, int, short *, struct pollhead **,
                        caller_context_t *);
extern int      fs_pathconf(struct vnode *, int, ulong_t *, struct cred *,
                        caller_context_t *);
extern void     clkset(time_t);
extern void     fs_dispose(struct vnode *, page_t *, int, int, struct cred *,
                        caller_context_t *);
extern void     fs_nodispose(struct vnode *, page_t *, int, int, struct cred *,
                        caller_context_t *);
extern int      fs_fab_acl(struct vnode *, vsecattr_t *, int flag, cred_t *,
                        caller_context_t *);
extern int      fs_shrlock(struct vnode *, int, struct shrlock *, int,
                        cred_t *, caller_context_t *);
extern int      fs_vnevent_nosupport(vnode_t *, vnevent_t, vnode_t *dvp,
                        char *fnm, caller_context_t *);
extern int      fs_vnevent_support(vnode_t *, vnevent_t, vnode_t *dvp,
                        char *fnm, caller_context_t *);
extern int      fs_acl_nontrivial(struct vnode *vp, struct cred *cr);
extern int      fs_need_estale_retry(int);
extern void     fs_vscan_register(int (*av_scan)(vnode_t *, cred_t *, int));
extern int      fs_vscan(vnode_t *, cred_t *, int);

extern vfs_t    *fs_vfsp_global(struct vfsops *, dev_t, int, uint_t);

/* Helper function to detect when epoll checks VOP_POLL handlers */
extern boolean_t fs_reject_epoll();

#endif  /* _KERNEL */

#ifdef  __cplusplus
}
#endif

#endif /* _SYS_FS_SUBR_H */