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 | 74 |
1 files changed, 58 insertions, 16 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 index 78603e54f54c..039865b703ef 100644 --- a/sys/contrib/openzfs/include/os/linux/kernel/linux/mod_compat.h +++ b/sys/contrib/openzfs/include/os/linux/kernel/linux/mod_compat.h @@ -6,7 +6,7 @@ * 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. + * or https://opensource.org/licenses/CDDL-1.0. * See the License for the specific language governing permissions * and limitations under the License. * @@ -30,27 +30,24 @@ #include <linux/module.h> #include <linux/moduleparam.h> -/* Grsecurity kernel API change */ -#ifdef MODULE_PARAM_CALL_CONST +/* + * Despite constifying struct kernel_param_ops, some older kernels define a + * `__check_old_set_param()` function in their headers that checks for a + * non-constified `->set()`. This has long been fixed in Linux mainline, but + * since we support older kernels, we workaround it by using a preprocessor + * definition to disable it. + */ +#define __check_old_set_param(_) (0) + 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_brt, zfs_condense, zfs_dbuf, zfs_dbuf_cache, @@ -71,7 +68,7 @@ enum scope_prefix_types { zfs_trim, zfs_txg, zfs_vdev, - zfs_vdev_cache, + zfs_vdev_disk, zfs_vdev_file, zfs_vdev_mirror, zfs_vnops, @@ -81,6 +78,50 @@ enum scope_prefix_types { }; /* + * While we define our own s64/u64 types, there is no reason to reimplement the + * existing Linux kernel types, so we use the preprocessor to remap our + * "custom" implementations to the kernel ones. This is done because the CPP + * does not allow us to write conditional definitions. The fourth definition + * exists because the CPP will not allow us to replace things like INT with int + * before string concatenation. + */ + +#define spl_param_set_int param_set_int +#define spl_param_get_int param_get_int +#define spl_param_ops_int param_ops_int +#define spl_param_ops_INT param_ops_int + +#define spl_param_set_long param_set_long +#define spl_param_get_long param_get_long +#define spl_param_ops_long param_ops_long +#define spl_param_ops_LONG param_ops_long + +#define spl_param_set_uint param_set_uint +#define spl_param_get_uint param_get_uint +#define spl_param_ops_uint param_ops_uint +#define spl_param_ops_UINT param_ops_uint + +#define spl_param_set_ulong param_set_ulong +#define spl_param_get_ulong param_get_ulong +#define spl_param_ops_ulong param_ops_ulong +#define spl_param_ops_ULONG param_ops_ulong + +#define spl_param_set_charp param_set_charp +#define spl_param_get_charp param_get_charp +#define spl_param_ops_charp param_ops_charp +#define spl_param_ops_STRING param_ops_charp + +int spl_param_set_s64(const char *val, zfs_kernel_param_t *kp); +extern int spl_param_get_s64(char *buffer, zfs_kernel_param_t *kp); +extern const struct kernel_param_ops spl_param_ops_s64; +#define spl_param_ops_S64 spl_param_ops_s64 + +extern int spl_param_set_u64(const char *val, zfs_kernel_param_t *kp); +extern int spl_param_get_u64(char *buffer, zfs_kernel_param_t *kp); +extern const struct kernel_param_ops spl_param_ops_u64; +#define spl_param_ops_U64 spl_param_ops_u64 + +/* * Declare a module parameter / sysctl node * * "scope_prefix" the part of the sysctl / sysfs tree the node resides under @@ -112,7 +153,8 @@ enum scope_prefix_types { _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_param_cb(name_prefix ## name, &spl_param_ops_ ## type, \ + &name_prefix ## name, perm); \ MODULE_PARM_DESC(name_prefix ## name, desc) /* |