diff options
| -rw-r--r-- | include/linux/drbd_genl.h | 244 | ||||
| -rw-r--r-- | include/linux/genl_magic_func.h | 107 | ||||
| -rw-r--r-- | include/linux/genl_magic_struct.h | 64 |
3 files changed, 193 insertions, 222 deletions
diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 7b174a093a8d..4ceecb9307d9 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -86,7 +86,7 @@ */ GENL_struct(DRBD_NLA_CFG_REPLY, 1, drbd_cfg_reply, /* "arbitrary" size strings, nla_policy.len = 0 */ - __str_field(1, GENLA_F_MANDATORY, info_text, 0) + __str_field(1, DRBD_GENLA_F_MANDATORY, info_text, 0) ) /* Configuration requests typically need a context to operate on. @@ -95,133 +95,133 @@ GENL_struct(DRBD_NLA_CFG_REPLY, 1, drbd_cfg_reply, * and/or the replication group (aka resource) name, * and the volume id within the resource. */ GENL_struct(DRBD_NLA_CFG_CONTEXT, 2, drbd_cfg_context, - __u32_field(1, GENLA_F_MANDATORY, ctx_volume) - __str_field(2, GENLA_F_MANDATORY, ctx_conn_name, 128) + __u32_field(1, DRBD_GENLA_F_MANDATORY, ctx_volume) + __str_field(2, DRBD_GENLA_F_MANDATORY, ctx_conn_name, 128) ) GENL_struct(DRBD_NLA_DISK_CONF, 3, disk_conf, - __str_field(1, GENLA_F_REQUIRED | GENLA_F_INVARIANT, backing_dev, 128) - __str_field(2, GENLA_F_REQUIRED | GENLA_F_INVARIANT, meta_dev, 128) - __s32_field(3, GENLA_F_REQUIRED | GENLA_F_INVARIANT, meta_dev_idx) + __str_field(1, DRBD_F_REQUIRED | DRBD_F_INVARIANT, backing_dev, 128) + __str_field(2, DRBD_F_REQUIRED | DRBD_F_INVARIANT, meta_dev, 128) + __s32_field(3, DRBD_F_REQUIRED | DRBD_F_INVARIANT, meta_dev_idx) /* use the resize command to try and change the disk_size */ - __u64_field(4, GENLA_F_MANDATORY | GENLA_F_INVARIANT, disk_size) + __u64_field(4, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, disk_size) /* we could change the max_bio_bvecs, * but it won't propagate through the stack */ - __u32_field(5, GENLA_F_MANDATORY | GENLA_F_INVARIANT, max_bio_bvecs) - - __u32_field_def(6, GENLA_F_MANDATORY, on_io_error, DRBD_ON_IO_ERROR_DEF) - __u32_field_def(7, GENLA_F_MANDATORY, fencing, DRBD_FENCING_DEF) - - __u32_field_def(8, GENLA_F_MANDATORY, resync_rate, DRBD_RESYNC_RATE_DEF) - __s32_field_def(9, GENLA_F_MANDATORY, resync_after, DRBD_RESYNC_AFTER_DEF) - __u32_field_def(10, GENLA_F_MANDATORY, al_extents, DRBD_AL_EXTENTS_DEF) - __u32_field_def(11, GENLA_F_MANDATORY, c_plan_ahead, DRBD_C_PLAN_AHEAD_DEF) - __u32_field_def(12, GENLA_F_MANDATORY, c_delay_target, DRBD_C_DELAY_TARGET_DEF) - __u32_field_def(13, GENLA_F_MANDATORY, c_fill_target, DRBD_C_FILL_TARGET_DEF) - __u32_field_def(14, GENLA_F_MANDATORY, c_max_rate, DRBD_C_MAX_RATE_DEF) - __u32_field_def(15, GENLA_F_MANDATORY, c_min_rate, DRBD_C_MIN_RATE_DEF) - - __flg_field_def(16, GENLA_F_MANDATORY, disk_barrier, DRBD_DISK_BARRIER_DEF) - __flg_field_def(17, GENLA_F_MANDATORY, disk_flushes, DRBD_DISK_FLUSHES_DEF) - __flg_field_def(18, GENLA_F_MANDATORY, disk_drain, DRBD_DISK_DRAIN_DEF) - __flg_field_def(19, GENLA_F_MANDATORY, md_flushes, DRBD_MD_FLUSHES_DEF) + __u32_field(5, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, max_bio_bvecs) + + __u32_field_def(6, DRBD_GENLA_F_MANDATORY, on_io_error, DRBD_ON_IO_ERROR_DEF) + __u32_field_def(7, DRBD_GENLA_F_MANDATORY, fencing, DRBD_FENCING_DEF) + + __u32_field_def(8, DRBD_GENLA_F_MANDATORY, resync_rate, DRBD_RESYNC_RATE_DEF) + __s32_field_def(9, DRBD_GENLA_F_MANDATORY, resync_after, DRBD_MINOR_NUMBER_DEF) + __u32_field_def(10, DRBD_GENLA_F_MANDATORY, al_extents, DRBD_AL_EXTENTS_DEF) + __u32_field_def(11, DRBD_GENLA_F_MANDATORY, c_plan_ahead, DRBD_C_PLAN_AHEAD_DEF) + __u32_field_def(12, DRBD_GENLA_F_MANDATORY, c_delay_target, DRBD_C_DELAY_TARGET_DEF) + __u32_field_def(13, DRBD_GENLA_F_MANDATORY, c_fill_target, DRBD_C_FILL_TARGET_DEF) + __u32_field_def(14, DRBD_GENLA_F_MANDATORY, c_max_rate, DRBD_C_MAX_RATE_DEF) + __u32_field_def(15, DRBD_GENLA_F_MANDATORY, c_min_rate, DRBD_C_MIN_RATE_DEF) + + __flg_field_def(16, DRBD_GENLA_F_MANDATORY, disk_barrier, DRBD_DISK_BARRIER_DEF) + __flg_field_def(17, DRBD_GENLA_F_MANDATORY, disk_flushes, DRBD_DISK_FLUSHES_DEF) + __flg_field_def(18, DRBD_GENLA_F_MANDATORY, disk_drain, DRBD_DISK_DRAIN_DEF) + __flg_field_def(19, DRBD_GENLA_F_MANDATORY, md_flushes, DRBD_MD_FLUSHES_DEF) ) GENL_struct(DRBD_NLA_RESOURCE_OPTS, 4, res_opts, - __str_field_def(1, GENLA_F_MANDATORY, cpu_mask, 32) - __u32_field_def(2, GENLA_F_MANDATORY, on_no_data, DRBD_ON_NO_DATA_DEF) + __str_field_def(1, DRBD_GENLA_F_MANDATORY, cpu_mask, 32) + __u32_field_def(2, DRBD_GENLA_F_MANDATORY, on_no_data, DRBD_ON_NO_DATA_DEF) ) GENL_struct(DRBD_NLA_NET_CONF, 5, net_conf, - __bin_field(1, GENLA_F_REQUIRED | GENLA_F_INVARIANT, my_addr, 128) - __bin_field(2, GENLA_F_REQUIRED | GENLA_F_INVARIANT, peer_addr, 128) - __str_field_def(3, GENLA_F_MANDATORY | GENLA_F_SENSITIVE, + __bin_field(1, DRBD_F_REQUIRED | DRBD_F_INVARIANT, my_addr, 128) + __bin_field(2, DRBD_F_REQUIRED | DRBD_F_INVARIANT, peer_addr, 128) + __str_field_def(3, DRBD_GENLA_F_MANDATORY | DRBD_F_SENSITIVE, shared_secret, SHARED_SECRET_MAX) - __str_field_def(4, GENLA_F_MANDATORY, cram_hmac_alg, SHARED_SECRET_MAX) - __str_field_def(5, GENLA_F_MANDATORY, integrity_alg, SHARED_SECRET_MAX) - __str_field_def(6, GENLA_F_MANDATORY, verify_alg, SHARED_SECRET_MAX) - __str_field_def(7, GENLA_F_MANDATORY, csums_alg, SHARED_SECRET_MAX) - __u32_field_def(8, GENLA_F_MANDATORY, wire_protocol, DRBD_PROTOCOL_DEF) - __u32_field_def(9, GENLA_F_MANDATORY, connect_int, DRBD_CONNECT_INT_DEF) - __u32_field_def(10, GENLA_F_MANDATORY, timeout, DRBD_TIMEOUT_DEF) - __u32_field_def(11, GENLA_F_MANDATORY, ping_int, DRBD_PING_INT_DEF) - __u32_field_def(12, GENLA_F_MANDATORY, ping_timeo, DRBD_PING_TIMEO_DEF) - __u32_field_def(13, GENLA_F_MANDATORY, sndbuf_size, DRBD_SNDBUF_SIZE_DEF) - __u32_field_def(14, GENLA_F_MANDATORY, rcvbuf_size, DRBD_RCVBUF_SIZE_DEF) - __u32_field_def(15, GENLA_F_MANDATORY, ko_count, DRBD_KO_COUNT_DEF) - __u32_field_def(16, GENLA_F_MANDATORY, max_buffers, DRBD_MAX_BUFFERS_DEF) - __u32_field_def(17, GENLA_F_MANDATORY, max_epoch_size, DRBD_MAX_EPOCH_SIZE_DEF) - __u32_field_def(18, GENLA_F_MANDATORY, unplug_watermark, DRBD_UNPLUG_WATERMARK_DEF) - __u32_field_def(19, GENLA_F_MANDATORY, after_sb_0p, DRBD_AFTER_SB_0P_DEF) - __u32_field_def(20, GENLA_F_MANDATORY, after_sb_1p, DRBD_AFTER_SB_1P_DEF) - __u32_field_def(21, GENLA_F_MANDATORY, after_sb_2p, DRBD_AFTER_SB_2P_DEF) - __u32_field_def(22, GENLA_F_MANDATORY, rr_conflict, DRBD_RR_CONFLICT_DEF) - __u32_field_def(23, GENLA_F_MANDATORY, on_congestion, DRBD_ON_CONGESTION_DEF) - __u32_field_def(24, GENLA_F_MANDATORY, cong_fill, DRBD_CONG_FILL_DEF) - __u32_field_def(25, GENLA_F_MANDATORY, cong_extents, DRBD_CONG_EXTENTS_DEF) - __flg_field_def(26, GENLA_F_MANDATORY, two_primaries, DRBD_ALLOW_TWO_PRIMARIES_DEF) - __flg_field(27, GENLA_F_MANDATORY | GENLA_F_INVARIANT, discard_my_data) - __flg_field_def(28, GENLA_F_MANDATORY, tcp_cork, DRBD_TCP_CORK_DEF) - __flg_field_def(29, GENLA_F_MANDATORY, always_asbp, DRBD_ALWAYS_ASBP_DEF) - __flg_field(30, GENLA_F_MANDATORY | GENLA_F_INVARIANT, dry_run) - __flg_field_def(31, GENLA_F_MANDATORY, use_rle, DRBD_USE_RLE_DEF) + __str_field_def(4, DRBD_GENLA_F_MANDATORY, cram_hmac_alg, SHARED_SECRET_MAX) + __str_field_def(5, DRBD_GENLA_F_MANDATORY, integrity_alg, SHARED_SECRET_MAX) + __str_field_def(6, DRBD_GENLA_F_MANDATORY, verify_alg, SHARED_SECRET_MAX) + __str_field_def(7, DRBD_GENLA_F_MANDATORY, csums_alg, SHARED_SECRET_MAX) + __u32_field_def(8, DRBD_GENLA_F_MANDATORY, wire_protocol, DRBD_PROTOCOL_DEF) + __u32_field_def(9, DRBD_GENLA_F_MANDATORY, connect_int, DRBD_CONNECT_INT_DEF) + __u32_field_def(10, DRBD_GENLA_F_MANDATORY, timeout, DRBD_TIMEOUT_DEF) + __u32_field_def(11, DRBD_GENLA_F_MANDATORY, ping_int, DRBD_PING_INT_DEF) + __u32_field_def(12, DRBD_GENLA_F_MANDATORY, ping_timeo, DRBD_PING_TIMEO_DEF) + __u32_field_def(13, DRBD_GENLA_F_MANDATORY, sndbuf_size, DRBD_SNDBUF_SIZE_DEF) + __u32_field_def(14, DRBD_GENLA_F_MANDATORY, rcvbuf_size, DRBD_RCVBUF_SIZE_DEF) + __u32_field_def(15, DRBD_GENLA_F_MANDATORY, ko_count, DRBD_KO_COUNT_DEF) + __u32_field_def(16, DRBD_GENLA_F_MANDATORY, max_buffers, DRBD_MAX_BUFFERS_DEF) + __u32_field_def(17, DRBD_GENLA_F_MANDATORY, max_epoch_size, DRBD_MAX_EPOCH_SIZE_DEF) + __u32_field_def(18, DRBD_GENLA_F_MANDATORY, unplug_watermark, DRBD_UNPLUG_WATERMARK_DEF) + __u32_field_def(19, DRBD_GENLA_F_MANDATORY, after_sb_0p, DRBD_AFTER_SB_0P_DEF) + __u32_field_def(20, DRBD_GENLA_F_MANDATORY, after_sb_1p, DRBD_AFTER_SB_1P_DEF) + __u32_field_def(21, DRBD_GENLA_F_MANDATORY, after_sb_2p, DRBD_AFTER_SB_2P_DEF) + __u32_field_def(22, DRBD_GENLA_F_MANDATORY, rr_conflict, DRBD_RR_CONFLICT_DEF) + __u32_field_def(23, DRBD_GENLA_F_MANDATORY, on_congestion, DRBD_ON_CONGESTION_DEF) + __u32_field_def(24, DRBD_GENLA_F_MANDATORY, cong_fill, DRBD_CONG_FILL_DEF) + __u32_field_def(25, DRBD_GENLA_F_MANDATORY, cong_extents, DRBD_CONG_EXTENTS_DEF) + __flg_field_def(26, DRBD_GENLA_F_MANDATORY, two_primaries, DRBD_ALLOW_TWO_PRIMARIES_DEF) + __flg_field(27, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, discard_my_data) + __flg_field_def(28, DRBD_GENLA_F_MANDATORY, tcp_cork, DRBD_TCP_CORK_DEF) + __flg_field_def(29, DRBD_GENLA_F_MANDATORY, always_asbp, DRBD_ALWAYS_ASBP_DEF) + __flg_field(30, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, dry_run) + __flg_field_def(31, DRBD_GENLA_F_MANDATORY, use_rle, DRBD_USE_RLE_DEF) ) GENL_struct(DRBD_NLA_SET_ROLE_PARMS, 6, set_role_parms, - __flg_field(1, GENLA_F_MANDATORY, assume_uptodate) + __flg_field(1, DRBD_GENLA_F_MANDATORY, assume_uptodate) ) GENL_struct(DRBD_NLA_RESIZE_PARMS, 7, resize_parms, - __u64_field(1, GENLA_F_MANDATORY, resize_size) - __flg_field(2, GENLA_F_MANDATORY, resize_force) - __flg_field(3, GENLA_F_MANDATORY, no_resync) + __u64_field(1, DRBD_GENLA_F_MANDATORY, resize_size) + __flg_field(2, DRBD_GENLA_F_MANDATORY, resize_force) + __flg_field(3, DRBD_GENLA_F_MANDATORY, no_resync) ) GENL_struct(DRBD_NLA_STATE_INFO, 8, state_info, /* the reason of the broadcast, * if this is an event triggered broadcast. */ - __u32_field(1, GENLA_F_MANDATORY, sib_reason) - __u32_field(2, GENLA_F_REQUIRED, current_state) - __u64_field(3, GENLA_F_MANDATORY, capacity) - __u64_field(4, GENLA_F_MANDATORY, ed_uuid) + __u32_field(1, DRBD_GENLA_F_MANDATORY, sib_reason) + __u32_field(2, DRBD_F_REQUIRED, current_state) + __u64_field(3, DRBD_GENLA_F_MANDATORY, capacity) + __u64_field(4, DRBD_GENLA_F_MANDATORY, ed_uuid) /* These are for broadcast from after state change work. * prev_state and new_state are from the moment the state change took * place, new_state is not neccessarily the same as current_state, * there may have been more state changes since. Which will be * broadcasted soon, in their respective after state change work. */ - __u32_field(5, GENLA_F_MANDATORY, prev_state) - __u32_field(6, GENLA_F_MANDATORY, new_state) + __u32_field(5, DRBD_GENLA_F_MANDATORY, prev_state) + __u32_field(6, DRBD_GENLA_F_MANDATORY, new_state) /* if we have a local disk: */ - __bin_field(7, GENLA_F_MANDATORY, uuids, (UI_SIZE*sizeof(__u64))) - __u32_field(8, GENLA_F_MANDATORY, disk_flags) - __u64_field(9, GENLA_F_MANDATORY, bits_total) - __u64_field(10, GENLA_F_MANDATORY, bits_oos) + __bin_field(7, DRBD_GENLA_F_MANDATORY, uuids, (UI_SIZE*sizeof(__u64))) + __u32_field(8, DRBD_GENLA_F_MANDATORY, disk_flags) + __u64_field(9, DRBD_GENLA_F_MANDATORY, bits_total) + __u64_field(10, DRBD_GENLA_F_MANDATORY, bits_oos) /* and in case resync or online verify is active */ - __u64_field(11, GENLA_F_MANDATORY, bits_rs_total) - __u64_field(12, GENLA_F_MANDATORY, bits_rs_failed) + __u64_field(11, DRBD_GENLA_F_MANDATORY, bits_rs_total) + __u64_field(12, DRBD_GENLA_F_MANDATORY, bits_rs_failed) /* for pre and post notifications of helper execution */ - __str_field(13, GENLA_F_MANDATORY, helper, 32) - __u32_field(14, GENLA_F_MANDATORY, helper_exit_code) + __str_field(13, DRBD_GENLA_F_MANDATORY, helper, 32) + __u32_field(14, DRBD_GENLA_F_MANDATORY, helper_exit_code) ) GENL_struct(DRBD_NLA_START_OV_PARMS, 9, start_ov_parms, - __u64_field(1, GENLA_F_MANDATORY, ov_start_sector) + __u64_field(1, DRBD_GENLA_F_MANDATORY, ov_start_sector) ) GENL_struct(DRBD_NLA_NEW_C_UUID_PARMS, 10, new_c_uuid_parms, - __flg_field(1, GENLA_F_MANDATORY, clear_bm) + __flg_field(1, DRBD_GENLA_F_MANDATORY, clear_bm) ) GENL_struct(DRBD_NLA_TIMEOUT_PARMS, 11, timeout_parms, - __u32_field(1, GENLA_F_REQUIRED, timeout_type) + __u32_field(1, DRBD_F_REQUIRED, timeout_type) ) GENL_struct(DRBD_NLA_DISCONNECT_PARMS, 12, disconnect_parms, - __flg_field(1, GENLA_F_MANDATORY, force_disconnect) + __flg_field(1, DRBD_GENLA_F_MANDATORY, force_disconnect) ) /* @@ -232,11 +232,11 @@ GENL_mc_group(events) /* kernel -> userspace announcement of changes */ GENL_notification( DRBD_EVENT, 1, events, - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_STATE_INFO, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_NET_CONF, GENLA_F_MANDATORY) - GENL_tla_expected(DRBD_NLA_DISK_CONF, GENLA_F_MANDATORY) - GENL_tla_expected(DRBD_NLA_SYNCER_CONF, GENLA_F_MANDATORY) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_STATE_INFO, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_NET_CONF, DRBD_GENLA_F_MANDATORY) + GENL_tla_expected(DRBD_NLA_DISK_CONF, DRBD_GENLA_F_MANDATORY) + GENL_tla_expected(DRBD_NLA_SYNCER_CONF, DRBD_GENLA_F_MANDATORY) ) /* query kernel for specific or all info */ @@ -250,116 +250,116 @@ GENL_op( ), /* To select the object .doit. * Or a subset of objects in .dumpit. */ - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_MANDATORY) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_GENLA_F_MANDATORY) ) #if 0 /* TO BE DONE */ /* create or destroy resources, aka replication groups */ GENL_op(DRBD_ADM_CREATE_RESOURCE, 3, GENL_doit(drbd_adm_create_resource), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_DELETE_RESOURCE, 4, GENL_doit(drbd_adm_delete_resource), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) #endif /* add DRBD minor devices as volumes to resources */ GENL_op(DRBD_ADM_ADD_MINOR, 5, GENL_doit(drbd_adm_add_minor), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_DEL_MINOR, 6, GENL_doit(drbd_adm_delete_minor), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) /* add or delete replication links to resources */ GENL_op(DRBD_ADM_ADD_LINK, 7, GENL_doit(drbd_adm_create_connection), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_DEL_LINK, 8, GENL_doit(drbd_adm_delete_connection), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_RESOURCE_OPTS, 9, GENL_doit(drbd_adm_resource_opts), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_RESOURCE_OPTS, GENLA_F_MANDATORY) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_RESOURCE_OPTS, DRBD_GENLA_F_MANDATORY) ) GENL_op( DRBD_ADM_CONNECT, 10, GENL_doit(drbd_adm_connect), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_NET_CONF, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_NET_CONF, DRBD_F_REQUIRED) ) GENL_op( DRBD_ADM_CHG_NET_OPTS, 29, GENL_doit(drbd_adm_net_opts), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_NET_CONF, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_NET_CONF, DRBD_F_REQUIRED) ) GENL_op(DRBD_ADM_DISCONNECT, 11, GENL_doit(drbd_adm_disconnect), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_ATTACH, 12, GENL_doit(drbd_adm_attach), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_DISK_CONF, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_DISK_CONF, DRBD_F_REQUIRED) ) GENL_op(DRBD_ADM_CHG_DISK_OPTS, 28, GENL_doit(drbd_adm_disk_opts), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_DISK_OPTS, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_DISK_OPTS, DRBD_F_REQUIRED) ) GENL_op( DRBD_ADM_RESIZE, 13, GENL_doit(drbd_adm_resize), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_RESIZE_PARMS, GENLA_F_MANDATORY) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_RESIZE_PARMS, DRBD_GENLA_F_MANDATORY) ) GENL_op( DRBD_ADM_PRIMARY, 14, GENL_doit(drbd_adm_set_role), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_SET_ROLE_PARMS, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_SET_ROLE_PARMS, DRBD_F_REQUIRED) ) GENL_op( DRBD_ADM_SECONDARY, 15, GENL_doit(drbd_adm_set_role), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_SET_ROLE_PARMS, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_SET_ROLE_PARMS, DRBD_F_REQUIRED) ) GENL_op( DRBD_ADM_NEW_C_UUID, 16, GENL_doit(drbd_adm_new_c_uuid), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_NEW_C_UUID_PARMS, GENLA_F_MANDATORY) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_NEW_C_UUID_PARMS, DRBD_GENLA_F_MANDATORY) ) GENL_op( DRBD_ADM_START_OV, 17, GENL_doit(drbd_adm_start_ov), - GENL_tla_expected(DRBD_NLA_START_OV_PARMS, GENLA_F_MANDATORY) + GENL_tla_expected(DRBD_NLA_START_OV_PARMS, DRBD_GENLA_F_MANDATORY) ) GENL_op(DRBD_ADM_DETACH, 18, GENL_doit(drbd_adm_detach), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_INVALIDATE, 19, GENL_doit(drbd_adm_invalidate), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_INVAL_PEER, 20, GENL_doit(drbd_adm_invalidate_peer), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_PAUSE_SYNC, 21, GENL_doit(drbd_adm_pause_sync), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_RESUME_SYNC, 22, GENL_doit(drbd_adm_resume_sync), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_SUSPEND_IO, 23, GENL_doit(drbd_adm_suspend_io), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_RESUME_IO, 24, GENL_doit(drbd_adm_resume_io), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_OUTDATE, 25, GENL_doit(drbd_adm_outdate), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_GET_TIMEOUT_TYPE, 26, GENL_doit(drbd_adm_get_timeout_type), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_DOWN, 27, GENL_doit(drbd_adm_down), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) diff --git a/include/linux/genl_magic_func.h b/include/linux/genl_magic_func.h index 2ae16126c6a4..58edd403a3ff 100644 --- a/include/linux/genl_magic_func.h +++ b/include/linux/genl_magic_func.h @@ -4,53 +4,6 @@ #include <linux/genl_magic_struct.h> /* - * Extension of genl attribute validation policies {{{1 - * {{{2 - */ - -/** - * nla_is_required - return true if this attribute is required - * @nla: netlink attribute - */ -static inline int nla_is_required(const struct nlattr *nla) -{ - return nla->nla_type & GENLA_F_REQUIRED; -} - -/** - * nla_is_mandatory - return true if understanding this attribute is mandatory - * @nla: netlink attribute - * Note: REQUIRED attributes are implicitly MANDATORY as well - */ -static inline int nla_is_mandatory(const struct nlattr *nla) -{ - return nla->nla_type & (GENLA_F_MANDATORY | GENLA_F_REQUIRED); -} - -/* Functionality to be integrated into nla_parse(), and validate_nla(), - * respectively. - * - * Enforcing the "mandatory" bit is done here, - * by rejecting unknown mandatory attributes. - * - * Part of enforcing the "required" flag would mean to embed it into - * nla_policy.type, and extending validate_nla(), which currently does - * BUG_ON(pt->type > NLA_TYPE_MAX); we have to work on existing kernels, - * so we cannot do that. Thats why enforcing "required" is done in the - * generated assignment functions below. */ -static int nla_check_unknown(int maxtype, struct nlattr *head, int len) -{ - struct nlattr *nla; - int rem; - nla_for_each_attr(nla, head, len, rem) { - __u16 type = nla_type(nla); - if (type > maxtype && nla_is_mandatory(nla)) - return -EOPNOTSUPP; - } - return 0; -} - -/* * Magic: declare tla policy {{{1 * Magic: declare nested policies * {{{2 @@ -80,13 +33,13 @@ static struct nla_policy s_name ## _nl_policy[] __read_mostly = \ #undef __field #define __field(attr_nr, attr_flag, name, nla_type, _type, __get, \ __put, __is_signed) \ - [__nla_type(attr_nr)] = { .type = nla_type }, + [attr_nr] = { .type = nla_type }, #undef __array #define __array(attr_nr, attr_flag, name, nla_type, _type, maxlen, \ __get, __put, __is_signed) \ - [__nla_type(attr_nr)] = { .type = nla_type, \ - .len = maxlen - (nla_type == NLA_NUL_STRING) }, + [attr_nr] = { .type = nla_type, \ + .len = maxlen - (nla_type == NLA_NUL_STRING) }, #include GENL_MAGIC_INCLUDE_FILE @@ -189,6 +142,43 @@ static struct nlattr *nested_attr_tb[128]; #define BUILD_BUG_ON_NULL(e) ((void *)sizeof(struct { int:-!!(e); })) #endif +static inline int drbd_nla_check_mandatory(int maxtype, struct nlattr *nla) +{ + struct nlattr *head = nla_data(nla); + int len = nla_len(nla); + int rem; + + /* + * validate_nla (called from nla_parse_nested) ignores attributes + * beyond maxtype, and does not understand the DRBD_GENLA_F_MANDATORY flag. + * In order to have it validate attributes with the DRBD_GENLA_F_MANDATORY + * flag set also, check and remove that flag before calling + * nla_parse_nested. + */ + + nla_for_each_attr(nla, head, len, rem) { + if (nla->nla_type & DRBD_GENLA_F_MANDATORY) { + if (nla_type(nla) > maxtype) + return -EOPNOTSUPP; + nla->nla_type &= ~DRBD_GENLA_F_MANDATORY; + } + } + return 0; +} + +static inline int drbd_nla_parse_nested(struct nlattr *tb[], int maxtype, + struct nlattr *nla, + const struct nla_policy *policy) +{ + int err; + + err = drbd_nla_check_mandatory(maxtype, nla); + if (!err) + err = nla_parse_nested(tb, maxtype, nla, policy); + + return err; +} + #undef GENL_struct #define GENL_struct(tag_name, tag_number, s_name, s_fields) \ /* *_from_attrs functions are static, but potentially unused */ \ @@ -204,12 +194,9 @@ static int __ ## s_name ## _from_attrs(struct s_name *s, \ if (!tla) \ return -ENOMSG; \ DPRINT_TLA(#s_name, "<=-", #tag_name); \ - err = nla_parse_nested(ntb, maxtype, tla, s_name ## _nl_policy); \ + err = drbd_nla_parse_nested(ntb, maxtype, tla, s_name ## _nl_policy); \ if (err) \ return err; \ - err = nla_check_unknown(maxtype, nla_data(tla), nla_len(tla)); \ - if (err) \ - return err; \ \ s_fields \ return 0; \ @@ -226,17 +213,17 @@ static int s_name ## _from_attrs_for_change(struct s_name *s, \ } __attribute__((unused)) \ #define __assign(attr_nr, attr_flag, name, nla_type, type, assignment...) \ - nla = ntb[__nla_type(attr_nr)]; \ + nla = ntb[attr_nr]; \ if (nla) { \ - if (exclude_invariants && ((attr_flag) & GENLA_F_INVARIANT)) { \ + if (exclude_invariants && ((attr_flag) & DRBD_F_INVARIANT)) { \ pr_info("<< must not change invariant attr: %s\n", #name); \ return -EEXIST; \ } \ assignment; \ - } else if (exclude_invariants && ((attr_flag) & GENLA_F_INVARIANT)) { \ + } else if (exclude_invariants && ((attr_flag) & DRBD_F_INVARIANT)) { \ /* attribute missing from payload, */ \ /* which was expected */ \ - } else if ((attr_flag) & GENLA_F_REQUIRED) { \ + } else if ((attr_flag) & DRBD_F_REQUIRED) { \ pr_info("<< missing attr: %s\n", #name); \ return -ENOMSG; \ } @@ -415,7 +402,7 @@ static inline int s_name ## _to_unpriv_skb(struct sk_buff *skb, \ #undef __field #define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put, \ __is_signed) \ - if (!exclude_sensitive || !((attr_flag) & GENLA_F_SENSITIVE)) { \ + if (!exclude_sensitive || !((attr_flag) & DRBD_F_SENSITIVE)) { \ DPRINT_FIELD(">>", nla_type, name, s, NULL); \ __put(skb, attr_nr, s->name); \ } @@ -423,7 +410,7 @@ static inline int s_name ## _to_unpriv_skb(struct sk_buff *skb, \ #undef __array #define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, \ __get, __put, __is_signed) \ - if (!exclude_sensitive || !((attr_flag) & GENLA_F_SENSITIVE)) { \ + if (!exclude_sensitive || !((attr_flag) & DRBD_F_SENSITIVE)) { \ DPRINT_ARRAY(">>",nla_type, name, s, NULL); \ __put(skb, attr_nr, min_t(int, maxlen, \ s->name ## _len + (nla_type == NLA_NUL_STRING)),\ diff --git a/include/linux/genl_magic_struct.h b/include/linux/genl_magic_struct.h index f3c3425ac30f..1d0bd79e27b3 100644 --- a/include/linux/genl_magic_struct.h +++ b/include/linux/genl_magic_struct.h @@ -26,50 +26,34 @@ extern void CONCAT_(GENL_MAGIC_FAMILY, _genl_unregister)(void); * Extension of genl attribute validation policies {{{2 */ -/** - * GENLA_F_FLAGS - policy type flags to ease compatible ABI evolvement - * - * @GENLA_F_REQUIRED: attribute has to be present, or message is considered invalid. - * Adding new REQUIRED attributes breaks ABI compatibility, so don't do that. +/* + * @DRBD_GENLA_F_MANDATORY: By default, netlink ignores attributes it does not + * know about. This flag can be set in nlattr->nla_type to indicate that this + * attribute must not be ignored. * - * @GENLA_F_MANDATORY: if present, receiver _must_ understand it. - * Without this, unknown attributes (> maxtype) are _silently_ ignored - * by validate_nla(). + * We check and remove this flag in drbd_nla_check_mandatory() before + * validating the attribute types and lengths via nla_parse_nested(). + */ +#define DRBD_GENLA_F_MANDATORY (1 << 14) + +/* + * Flags specific to drbd and not visible at the netlink layer, used in + * <struct>_from_attrs and <struct>_to_skb: * - * To be used for API extensions, so older kernel can reject requests for not - * yet implemented features, if newer userland tries to use them even though - * the genl_family version clearly indicates they are not available. + * @DRBD_F_REQUIRED: Attribute is required; a request without this attribute is + * invalid. * - * NOTE: These flags overload - * NLA_F_NESTED (1 << 15) - * NLA_F_NET_BYTEORDER (1 << 14) - * from linux/netlink.h, which are not useful for validate_nla(): - * NET_BYTEORDER is not used anywhere, and NESTED would be specified by setting - * .type = NLA_NESTED in the appropriate policy. + * @DRBD_F_SENSITIVE: Attribute includes sensitive information and must not be + * included in unpriviledged get requests or broadcasts. * - * See also: nla_type() + * @DRBD_F_INVARIANT: Attribute is set when an object is initially created, but + * cannot subsequently be changed. */ -enum { - GENLA_F_MANDATORY = 1 << 14, - GENLA_F_REQUIRED = 1 << 15, - - /* Below will not be present in the __u16 .nla_type, but can be - * triggered on in <struct>_to_skb resp. <struct>_from_attrs */ - - /* To exclude "sensitive" information from broadcasts, or on - * unpriviledged get requests. This is useful because genetlink - * multicast groups can be listened in on by anyone. */ - GENLA_F_SENSITIVE = 1 << 16, - - /* INVARIAN options cannot be changed at runtime. - * Useful to share an attribute policy and struct definition, - * between some "create" and "change" commands, - * but disallow certain fields to be changed online. - */ - GENLA_F_INVARIANT = 1 << 17, -}; +#define DRBD_F_REQUIRED (1 << 0) +#define DRBD_F_SENSITIVE (1 << 1) +#define DRBD_F_INVARIANT (1 << 2) -#define __nla_type(x) ((__u16)((__u16)(x) & (__u16)NLA_TYPE_MASK)) +#define __nla_type(x) ((__u16)((x) & NLA_TYPE_MASK & ~DRBD_GENLA_F_MANDATORY)) /* }}}1 * MAGIC @@ -170,12 +154,12 @@ enum { \ #undef __field #define __field(attr_nr, attr_flag, name, nla_type, type, \ __get, __put, __is_signed) \ - T_ ## name = (__u16)(attr_nr | attr_flag), + T_ ## name = (__u16)(attr_nr | ((attr_flag) & DRBD_GENLA_F_MANDATORY)), #undef __array #define __array(attr_nr, attr_flag, name, nla_type, type, \ maxlen, __get, __put, __is_signed) \ - T_ ## name = (__u16)(attr_nr | attr_flag), + T_ ## name = (__u16)(attr_nr | ((attr_flag) & DRBD_GENLA_F_MANDATORY)), #include GENL_MAGIC_INCLUDE_FILE |