diff options
Diffstat (limited to 'sys/contrib/openzfs/include/os/linux/kernel/linux/mod_compat.h')
| -rw-r--r-- | sys/contrib/openzfs/include/os/linux/kernel/linux/mod_compat.h | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/sys/contrib/openzfs/include/os/linux/kernel/linux/mod_compat.h b/sys/contrib/openzfs/include/os/linux/kernel/linux/mod_compat.h new file mode 100644 index 000000000000..4b83fe413334 --- /dev/null +++ b/sys/contrib/openzfs/include/os/linux/kernel/linux/mod_compat.h @@ -0,0 +1,151 @@ +/* + * 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) 2016 Gvozden Neskovic <neskovic@gmail.com>. + */ + +#ifndef _MOD_COMPAT_H +#define _MOD_COMPAT_H + +#include <linux/module.h> +#include <linux/moduleparam.h> + +/* 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 + +/* BEGIN CSTYLED */ +#define INT int +#define UINT uint +#define ULONG ulong +#define LONG long +#define STRING charp +/* END CSTYLED */ + +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_mirror, + zfs_zevent, + zfs_zio, + zfs_zil +}; + +/* + * 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 + * "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 + */ +/* BEGIN CSTYLED */ +#define ZFS_MODULE_PARAM(scope_prefix, name_prefix, name, type, perm, desc) \ + CTASSERT_GLOBAL((sizeof (scope_prefix) == sizeof (enum scope_prefix_types))); \ + module_param(name_prefix ## name, type, perm); \ + MODULE_PARM_DESC(name_prefix ## name, desc) +/* END CSTYLED */ + +/* + * 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 + */ +/* BEGIN CSTYLED */ +#define ZFS_MODULE_PARAM_CALL(scope_prefix, name_prefix, name, setfunc, getfunc, perm, desc) \ + CTASSERT_GLOBAL((sizeof (scope_prefix) == sizeof (enum scope_prefix_types))); \ + module_param_call(name_prefix ## name, setfunc, getfunc, &name_prefix ## name, perm); \ + MODULE_PARM_DESC(name_prefix ## name, desc) +/* END CSTYLED */ + +#define ZFS_MODULE_PARAM_ARGS const char *buf, zfs_kernel_param_t *kp + +#define ZFS_MODULE_DESCRIPTION(s) MODULE_DESCRIPTION(s) +#define ZFS_MODULE_AUTHOR(s) MODULE_AUTHOR(s) +#define ZFS_MODULE_LICENSE(s) MODULE_LICENSE(s) +#define ZFS_MODULE_VERSION(s) MODULE_VERSION(s) + +#endif /* _MOD_COMPAT_H */ |