/* * 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 https://opensource.org/licenses/CDDL-1.0. * 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) 2016 Gvozden Neskovic . * Copyright (c) 2020 by Delphix. All rights reserved. */ #ifndef _MOD_COMPAT_H #define _MOD_COMPAT_H #include #include /* Grsecurity kernel API change */ #ifdef MODULE_PARAM_CALL_CONST typedef const struct kernel_param zfs_kernel_param_t; #else typedef struct kernel_param zfs_kernel_param_t; #endif #define ZMOD_RW 0644 #define ZMOD_RD 0444 #define INT int #define LONG long /* BEGIN CSTYLED */ #define UINT uint #define ULONG ulong /* END CSTYLED */ #define STRING charp enum scope_prefix_types { zfs, zfs_arc, zfs_condense, zfs_dbuf, zfs_dbuf_cache, zfs_deadman, zfs_dedup, zfs_l2arc, zfs_livelist, zfs_livelist_condense, zfs_lua, zfs_metaslab, zfs_mg, zfs_multihost, zfs_prefetch, zfs_reconstruct, zfs_recv, zfs_send, zfs_spa, zfs_trim, zfs_txg, zfs_vdev, zfs_vdev_cache, zfs_vdev_file, zfs_vdev_mirror, zfs_vnops, zfs_zevent, zfs_zio, zfs_zil }; /* * Declare a module parameter / sysctl node * * "scope_prefix" the part of the sysctl / sysfs tree the node resides under * (currently a no-op on Linux) * "name_prefix" the part of the variable name that will be excluded from the * exported names on platforms with a hierarchical namespace * "name" the part of the variable that will be exposed on platforms with a * hierarchical namespace, or as name_prefix ## name on Linux * "type" the variable type * "perm" the permissions (read/write or read only) * "desc" a brief description of the option * * Examples: * ZFS_MODULE_PARAM(zfs_vdev_mirror, zfs_vdev_mirror_, rotating_inc, UINT, * ZMOD_RW, "Rotating media load increment for non-seeking I/O's"); * on FreeBSD: * vfs.zfs.vdev.mirror.rotating_inc * on Linux: * zfs_vdev_mirror_rotating_inc * * ZFS_MODULE_PARAM(zfs, , dmu_prefetch_max, UINT, ZMOD_RW, * "Limit one prefetch call to this size"); * on FreeBSD: * vfs.zfs.dmu_prefetch_max * on Linux: * dmu_prefetch_max */ #define ZFS_MODULE_PARAM(scope_prefix, name_prefix, name, type, perm, desc) \ _Static_assert( \ sizeof (scope_prefix) == sizeof (enum scope_prefix_types), \ "" #scope_prefix " size mismatch with enum scope_prefix_types"); \ module_param(name_prefix ## name, type, perm); \ MODULE_PARM_DESC(name_prefix ## name, desc) /* * Declare a module parameter / sysctl node * * "scope_prefix" the part of the the sysctl / sysfs tree the node resides under * (currently a no-op on Linux) * "name_prefix" the part of the variable name that will be excluded from the * exported names on platforms with a hierarchical namespace * "name" the part of the variable that will be exposed on platforms with a * hierarchical namespace, or as name_prefix ## name on Linux * "setfunc" setter function * "getfunc" getter function * "perm" the permissions (read/write or read only) * "desc" a brief description of the option * * Examples: * ZFS_MODULE_PARAM_CALL(zfs_spa, spa_, slop_shift, param_set_slop_shift, * param_get_int, ZMOD_RW, "Reserved free space in pool"); * on FreeBSD: * vfs.zfs.spa_slop_shift * on Linux: * spa_slop_shift */ #define ZFS_MODULE_PARAM_CALL( \ scope_prefix, name_prefix, name, setfunc, getfunc, perm, desc) \ _Static_assert( \ sizeof (scope_prefix) == sizeof (enum scope_prefix_types), \ "" #scope_prefix " size mismatch with enum scope_prefix_types"); \ module_param_call(name_prefix ## name, setfunc, getfunc, \ &name_prefix ## name, perm); \ MODULE_PARM_DESC(name_prefix ## name, desc) /* * As above, but there is no variable with the name name_prefix ## name, * so NULL is passed to module_param_call instead. */ #define ZFS_MODULE_VIRTUAL_PARAM_CALL( \ scope_prefix, name_prefix, name, setfunc, getfunc, perm, desc) \ _Static_assert( \ sizeof (scope_prefix) == sizeof (enum scope_prefix_types), \ "" #scope_prefix " size mismatch with enum scope_prefix_types"); \ module_param_call(name_prefix ## name, setfunc, getfunc, NULL, perm); \ MODULE_PARM_DESC(name_prefix ## name, desc) #define ZFS_MODULE_PARAM_ARGS const char *buf, zfs_kernel_param_t *kp #endif /* _MOD_COMPAT_H */