diff options
Diffstat (limited to 'src/systemd/sd-netlink.h')
| -rw-r--r-- | src/systemd/sd-netlink.h | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/src/systemd/sd-netlink.h b/src/systemd/sd-netlink.h new file mode 100644 index 0000000..7edfeb7 --- /dev/null +++ b/src/systemd/sd-netlink.h @@ -0,0 +1,249 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#ifndef foosdnetlinkhfoo +#define foosdnetlinkhfoo + +/*** + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see <https://www.gnu.org/licenses/>. +***/ + +#include <errno.h> +#include <inttypes.h> +#include <net/ethernet.h> +#include <netinet/in.h> +#include <linux/filter.h> +#include <linux/neighbour.h> +#include <linux/rtnetlink.h> + +#include "sd-event.h" + +#include "_sd-common.h" + +_SD_BEGIN_DECLARATIONS; + +typedef struct sd_netlink sd_netlink; +typedef struct sd_netlink_message sd_netlink_message; +typedef struct sd_netlink_slot sd_netlink_slot; + +/* callback */ +typedef int (*sd_netlink_message_handler_t)(sd_netlink *nl, sd_netlink_message *m, void *userdata); +typedef _sd_destroy_t sd_netlink_destroy_t; + +/* bus */ +int sd_netlink_open(sd_netlink **ret); +int sd_netlink_open_fd(sd_netlink **ret, int fd); +int sd_netlink_increase_rxbuf(sd_netlink *nl, const size_t size); + +sd_netlink *sd_netlink_ref(sd_netlink *nl); +sd_netlink *sd_netlink_unref(sd_netlink *nl); + +int sd_netlink_send(sd_netlink *nl, sd_netlink_message *message, uint32_t *serial); +int sd_netlink_call_async(sd_netlink *nl, sd_netlink_slot **ret_slot, sd_netlink_message *message, + sd_netlink_message_handler_t callback, sd_netlink_destroy_t destoy_callback, + void *userdata, uint64_t usec, const char *description); +int sd_netlink_call(sd_netlink *nl, sd_netlink_message *message, uint64_t timeout, + sd_netlink_message **reply); +int sd_netlink_read(sd_netlink *nl, uint32_t serial, uint64_t timeout, sd_netlink_message **reply); + +int sd_netlink_get_events(sd_netlink *nl); +int sd_netlink_get_timeout(sd_netlink *nl, uint64_t *timeout); +int sd_netlink_process(sd_netlink *nl, sd_netlink_message **ret); +int sd_netlink_wait(sd_netlink *nl, uint64_t timeout); + +int sd_netlink_add_match(sd_netlink *nl, sd_netlink_slot **ret_slot, uint16_t match, + sd_netlink_message_handler_t callback, + sd_netlink_destroy_t destroy_callback, + void *userdata, const char *description); + +int sd_netlink_attach_event(sd_netlink *nl, sd_event *e, int64_t priority); +int sd_netlink_detach_event(sd_netlink *nl); +int sd_netlink_attach_filter(sd_netlink *nl, size_t len, const struct sock_filter *filter); + +/* Message construction */ +int sd_netlink_message_append_string(sd_netlink_message *m, uint16_t attr_type, const char *data); +int sd_netlink_message_append_strv(sd_netlink_message *m, uint16_t attr_type, const char* const *data); +int sd_netlink_message_append_flag(sd_netlink_message *m, uint16_t attr_type); +int sd_netlink_message_append_u8(sd_netlink_message *m, uint16_t attr_type, uint8_t data); +int sd_netlink_message_append_u16(sd_netlink_message *m, uint16_t attr_type, uint16_t data); +int sd_netlink_message_append_u32(sd_netlink_message *m, uint16_t attr_type, uint32_t data); +int sd_netlink_message_append_u64(sd_netlink_message *m, uint16_t attr_type, uint64_t data); +int sd_netlink_message_append_s8(sd_netlink_message *m, uint16_t attr_type, int8_t data); +int sd_netlink_message_append_s16(sd_netlink_message *m, uint16_t attr_type, int16_t data); +int sd_netlink_message_append_s32(sd_netlink_message *m, uint16_t attr_type, int32_t data); +int sd_netlink_message_append_s64(sd_netlink_message *m, uint16_t attr_type, int64_t data); +int sd_netlink_message_append_data(sd_netlink_message *m, uint16_t attr_type, const void *data, size_t len); +int sd_netlink_message_append_container_data( + sd_netlink_message *m, + uint16_t container_type, + uint16_t attr_type, + const void *data, + size_t len); +int sd_netlink_message_append_in_addr(sd_netlink_message *m, uint16_t attr_type, const struct in_addr *data); +int sd_netlink_message_append_in6_addr(sd_netlink_message *m, uint16_t attr_type, const struct in6_addr *data); +int sd_netlink_message_append_sockaddr_in(sd_netlink_message *m, uint16_t attr_type, const struct sockaddr_in *data); +int sd_netlink_message_append_sockaddr_in6(sd_netlink_message *m, uint16_t attr_type, const struct sockaddr_in6 *data); +int sd_netlink_message_append_ether_addr(sd_netlink_message *m, uint16_t attr_type, const struct ether_addr *data); +int sd_netlink_message_append_cache_info(sd_netlink_message *m, uint16_t attr_type, const struct ifa_cacheinfo *info); + +int sd_netlink_message_open_container(sd_netlink_message *m, uint16_t attr_type); +int sd_netlink_message_open_container_union(sd_netlink_message *m, uint16_t attr_type, const char *key); +int sd_netlink_message_close_container(sd_netlink_message *m); + +int sd_netlink_message_open_array(sd_netlink_message *m, uint16_t type); +int sd_netlink_message_cancel_array(sd_netlink_message *m); + +/* Reading messages */ +int sd_netlink_message_read(sd_netlink_message *m, uint16_t attr_type, size_t size, void *data); +int sd_netlink_message_read_data(sd_netlink_message *m, uint16_t attr_type, size_t *ret_size, void **ret_data); +int sd_netlink_message_read_data_suffix0(sd_netlink_message *m, uint16_t attr_type, size_t *ret_size, void **ret_data); +int sd_netlink_message_read_string_strdup(sd_netlink_message *m, uint16_t attr_type, char **data); +int sd_netlink_message_read_string(sd_netlink_message *m, uint16_t attr_type, const char **data); +int sd_netlink_message_read_strv(sd_netlink_message *m, uint16_t container_type, uint16_t attr_type, char ***ret); +int sd_netlink_message_read_u8(sd_netlink_message *m, uint16_t attr_type, uint8_t *data); +int sd_netlink_message_read_u16(sd_netlink_message *m, uint16_t attr_type, uint16_t *data); +int sd_netlink_message_read_u32(sd_netlink_message *m, uint16_t attr_type, uint32_t *data); +int sd_netlink_message_read_ether_addr(sd_netlink_message *m, uint16_t attr_type, struct ether_addr *data); +int sd_netlink_message_read_cache_info(sd_netlink_message *m, uint16_t attr_type, struct ifa_cacheinfo *info); +int sd_netlink_message_read_in_addr(sd_netlink_message *m, uint16_t attr_type, struct in_addr *data); +int sd_netlink_message_read_in6_addr(sd_netlink_message *m, uint16_t attr_type, struct in6_addr *data); +int sd_netlink_message_has_flag(sd_netlink_message *m, uint16_t attr_type); +int sd_netlink_message_enter_container(sd_netlink_message *m, uint16_t attr_type); +int sd_netlink_message_enter_array(sd_netlink_message *m, uint16_t attr_type); +int sd_netlink_message_exit_container(sd_netlink_message *m); + +int sd_netlink_message_rewind(sd_netlink_message *m, sd_netlink *nl); + +sd_netlink_message *sd_netlink_message_next(sd_netlink_message *m); + +sd_netlink_message *sd_netlink_message_ref(sd_netlink_message *m); +sd_netlink_message *sd_netlink_message_unref(sd_netlink_message *m); + +int sd_netlink_message_set_request_dump(sd_netlink_message *m, int dump); +int sd_netlink_message_is_error(sd_netlink_message *m); +int sd_netlink_message_get_errno(sd_netlink_message *m); +int sd_netlink_message_get_type(sd_netlink_message *m, uint16_t *type); +int sd_netlink_message_set_flags(sd_netlink_message *m, uint16_t flags); +int sd_netlink_message_is_broadcast(sd_netlink_message *m); +int sd_netlink_message_get_max_attribute(sd_netlink_message *m, uint16_t *ret); + +/* rtnl */ +int sd_rtnl_message_get_family(sd_netlink_message *m, int *family); + +int sd_rtnl_message_new_addr(sd_netlink *nl, sd_netlink_message **ret, uint16_t msg_type, int index, int family); +int sd_rtnl_message_new_addr_update(sd_netlink *nl, sd_netlink_message **ret, int index, int family); +int sd_rtnl_message_addr_set_prefixlen(sd_netlink_message *m, unsigned char prefixlen); +int sd_rtnl_message_addr_set_scope(sd_netlink_message *m, unsigned char scope); +int sd_rtnl_message_addr_set_flags(sd_netlink_message *m, unsigned char flags); +int sd_rtnl_message_addr_get_family(sd_netlink_message *m, int *family); +int sd_rtnl_message_addr_get_prefixlen(sd_netlink_message *m, unsigned char *ret_prefixlen); +int sd_rtnl_message_addr_get_scope(sd_netlink_message *m, unsigned char *ret_scope); +int sd_rtnl_message_addr_get_flags(sd_netlink_message *m, unsigned char *ret_flags); +int sd_rtnl_message_addr_get_ifindex(sd_netlink_message *m, int *ret_ifindex); + +int sd_rtnl_message_new_link(sd_netlink *nl, sd_netlink_message **ret, uint16_t msg_type, int index); +int sd_rtnl_message_link_set_flags(sd_netlink_message *m, unsigned flags, unsigned change); +int sd_rtnl_message_link_set_type(sd_netlink_message *m, unsigned type); +int sd_rtnl_message_link_set_family(sd_netlink_message *m, unsigned family); +int sd_rtnl_message_link_get_ifindex(sd_netlink_message *m, int *ifindex); +int sd_rtnl_message_link_get_flags(sd_netlink_message *m, unsigned *flags); +int sd_rtnl_message_link_get_type(sd_netlink_message *m, unsigned short *type); + +int sd_rtnl_message_new_route(sd_netlink *nl, sd_netlink_message **ret, uint16_t nlmsg_type, int rtm_family, unsigned char rtm_protocol); +int sd_rtnl_message_route_set_dst_prefixlen(sd_netlink_message *m, unsigned char prefixlen); +int sd_rtnl_message_route_set_src_prefixlen(sd_netlink_message *m, unsigned char prefixlen); +int sd_rtnl_message_route_set_scope(sd_netlink_message *m, unsigned char scope); +int sd_rtnl_message_route_set_flags(sd_netlink_message *m, unsigned flags); +int sd_rtnl_message_route_set_table(sd_netlink_message *m, unsigned char table); +int sd_rtnl_message_route_set_type(sd_netlink_message *m, unsigned char type); +int sd_rtnl_message_route_get_flags(sd_netlink_message *m, unsigned *flags); +int sd_rtnl_message_route_get_family(sd_netlink_message *m, int *family); +int sd_rtnl_message_route_get_protocol(sd_netlink_message *m, unsigned char *protocol); +int sd_rtnl_message_route_get_scope(sd_netlink_message *m, unsigned char *scope); +int sd_rtnl_message_route_get_tos(sd_netlink_message *m, unsigned char *tos); +int sd_rtnl_message_route_get_table(sd_netlink_message *m, unsigned char *table); +int sd_rtnl_message_route_get_dst_prefixlen(sd_netlink_message *m, unsigned char *dst_len); +int sd_rtnl_message_route_get_src_prefixlen(sd_netlink_message *m, unsigned char *src_len); +int sd_rtnl_message_route_get_type(sd_netlink_message *m, unsigned char *type); + +int sd_rtnl_message_new_nexthop(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t nlmsg_type, int nh_family, unsigned char nh_protocol); +int sd_rtnl_message_nexthop_set_flags(sd_netlink_message *m, uint8_t flags); +int sd_rtnl_message_nexthop_get_flags(sd_netlink_message *m, uint8_t *ret); +int sd_rtnl_message_nexthop_get_family(sd_netlink_message *m, uint8_t *family); +int sd_rtnl_message_nexthop_get_protocol(sd_netlink_message *m, uint8_t *protocol); + +int sd_rtnl_message_new_neigh(sd_netlink *nl, sd_netlink_message **ret, uint16_t nlmsg_type, int index, int nda_family); +int sd_rtnl_message_neigh_set_flags(sd_netlink_message *m, uint8_t flags); +int sd_rtnl_message_neigh_set_state(sd_netlink_message *m, uint16_t state); +int sd_rtnl_message_neigh_get_family(sd_netlink_message *m, int *family); +int sd_rtnl_message_neigh_get_ifindex(sd_netlink_message *m, int *index); +int sd_rtnl_message_neigh_get_state(sd_netlink_message *m, uint16_t *state); +int sd_rtnl_message_neigh_get_flags(sd_netlink_message *m, uint8_t *flags); + +int sd_rtnl_message_new_addrlabel(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t nlmsg_type, int ifindex, int ifal_family); +int sd_rtnl_message_addrlabel_set_prefixlen(sd_netlink_message *m, unsigned char prefixlen); +int sd_rtnl_message_addrlabel_get_prefixlen(sd_netlink_message *m, unsigned char *prefixlen); + +int sd_rtnl_message_new_routing_policy_rule(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t nlmsg_type, int ifal_family); +int sd_rtnl_message_routing_policy_rule_set_tos(sd_netlink_message *m, uint8_t tos); +int sd_rtnl_message_routing_policy_rule_get_tos(sd_netlink_message *m, uint8_t *tos); +int sd_rtnl_message_routing_policy_rule_set_table(sd_netlink_message *m, uint8_t table); +int sd_rtnl_message_routing_policy_rule_get_table(sd_netlink_message *m, uint8_t *table); +int sd_rtnl_message_routing_policy_rule_set_fib_src_prefixlen(sd_netlink_message *m, uint8_t len); +int sd_rtnl_message_routing_policy_rule_get_fib_src_prefixlen(sd_netlink_message *m, uint8_t *len); +int sd_rtnl_message_routing_policy_rule_set_fib_dst_prefixlen(sd_netlink_message *m, uint8_t len); +int sd_rtnl_message_routing_policy_rule_get_fib_dst_prefixlen(sd_netlink_message *m, uint8_t *len); +int sd_rtnl_message_routing_policy_rule_set_fib_type(sd_netlink_message *m, uint8_t type); +int sd_rtnl_message_routing_policy_rule_get_fib_type(sd_netlink_message *m, uint8_t *type); +int sd_rtnl_message_routing_policy_rule_set_flags(sd_netlink_message *m, uint32_t flags); +int sd_rtnl_message_routing_policy_rule_get_flags(sd_netlink_message *m, uint32_t *flags); + +int sd_rtnl_message_new_traffic_control(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t nlmsg_type, + int ifindex, uint32_t handle, uint32_t parent); +int sd_rtnl_message_traffic_control_get_ifindex(sd_netlink_message *m, int *ret); +int sd_rtnl_message_traffic_control_get_handle(sd_netlink_message *m, uint32_t *ret); +int sd_rtnl_message_traffic_control_get_parent(sd_netlink_message *m, uint32_t *ret); + +int sd_rtnl_message_new_mdb(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t nlmsg_type, int mdb_ifindex); + +/* genl */ +int sd_genl_socket_open(sd_netlink **ret); +int sd_genl_message_new(sd_netlink *genl, const char *family_name, uint8_t cmd, sd_netlink_message **ret); +int sd_genl_message_get_family_name(sd_netlink *genl, sd_netlink_message *m, const char **ret); +int sd_genl_message_get_command(sd_netlink *genl, sd_netlink_message *m, uint8_t *ret); +int sd_genl_add_match(sd_netlink *nl, sd_netlink_slot **ret_slot, const char *family_name, + const char *multicast_group_name, uint8_t command, + sd_netlink_message_handler_t callback, + sd_netlink_destroy_t destroy_callback, + void *userdata, const char *description); + +/* slot */ +sd_netlink_slot *sd_netlink_slot_ref(sd_netlink_slot *slot); +sd_netlink_slot *sd_netlink_slot_unref(sd_netlink_slot *slot); + +sd_netlink *sd_netlink_slot_get_netlink(sd_netlink_slot *slot); +void *sd_netlink_slot_get_userdata(sd_netlink_slot *slot); +void *sd_netlink_slot_set_userdata(sd_netlink_slot *slot, void *userdata); +int sd_netlink_slot_get_destroy_callback(sd_netlink_slot *slot, sd_netlink_destroy_t *callback); +int sd_netlink_slot_set_destroy_callback(sd_netlink_slot *slot, sd_netlink_destroy_t callback); +int sd_netlink_slot_get_floating(sd_netlink_slot *slot); +int sd_netlink_slot_set_floating(sd_netlink_slot *slot, int b); +int sd_netlink_slot_get_description(sd_netlink_slot *slot, const char **description); +int sd_netlink_slot_set_description(sd_netlink_slot *slot, const char *description); + +_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_netlink, sd_netlink_unref); +_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_netlink_message, sd_netlink_message_unref); +_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_netlink_slot, sd_netlink_slot_unref); + +_SD_END_DECLARATIONS; + +#endif |