include/sys/zfs_onexit.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or https://opensource.org/licenses/CDDL-1.0.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright (c) 2020 by Delphix. All rights reserved.
  25  */
  26
  27 #ifndef _SYS_ZFS_ONEXIT_H
  28 #define _SYS_ZFS_ONEXIT_H
  29
  30 #include <sys/zfs_context.h>
  31
  32 #ifdef  __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 #ifdef _KERNEL
  37
  38 typedef struct zfs_onexit {
  39         kmutex_t        zo_lock;
  40         list_t          zo_actions;
  41 } zfs_onexit_t;
  42
  43 typedef struct zfs_onexit_action_node {
  44         list_node_t     za_link;
  45         void            (*za_func)(void *);
  46         void            *za_data;
  47 } zfs_onexit_action_node_t;
  48
  49 extern void zfs_onexit_init(zfs_onexit_t **zo);
  50 extern void zfs_onexit_destroy(zfs_onexit_t *zo);
  51
  52 #endif
  53
  54 extern zfs_file_t *zfs_onexit_fd_hold(int fd, minor_t *minorp);
  55 extern void zfs_onexit_fd_rele(zfs_file_t *);
  56 extern int zfs_onexit_add_cb(minor_t minor, void (*func)(void *), void *data,
  57     uintptr_t *action_handle);
  58
  59 #ifdef  __cplusplus
  60 }
  61 #endif
  62
  63 #endif  /* _SYS_ZFS_ONEXIT_H */