diff options
Diffstat (limited to 'src/libsystemd/sd-netlink')
| l--------- | src/libsystemd/sd-netlink/Makefile | 1 | ||||
| -rw-r--r-- | src/libsystemd/sd-netlink/local-addresses.c | 276 | ||||
| -rw-r--r-- | src/libsystemd/sd-netlink/local-addresses.h | 36 | ||||
| -rw-r--r-- | src/libsystemd/sd-netlink/netlink-internal.h | 137 | ||||
| -rw-r--r-- | src/libsystemd/sd-netlink/netlink-message.c | 964 | ||||
| -rw-r--r-- | src/libsystemd/sd-netlink/netlink-socket.c | 474 | ||||
| -rw-r--r-- | src/libsystemd/sd-netlink/netlink-types.c | 653 | ||||
| -rw-r--r-- | src/libsystemd/sd-netlink/netlink-types.h | 94 | ||||
| -rw-r--r-- | src/libsystemd/sd-netlink/netlink-util.c | 170 | ||||
| -rw-r--r-- | src/libsystemd/sd-netlink/netlink-util.h | 39 | ||||
| -rw-r--r-- | src/libsystemd/sd-netlink/rtnl-message.c | 675 | ||||
| -rw-r--r-- | src/libsystemd/sd-netlink/sd-netlink.c | 954 | ||||
| -rw-r--r-- | src/libsystemd/sd-netlink/test-local-addresses.c | 56 | ||||
| -rw-r--r-- | src/libsystemd/sd-netlink/test-netlink.c | 440 |
14 files changed, 0 insertions, 4969 deletions
diff --git a/src/libsystemd/sd-netlink/Makefile b/src/libsystemd/sd-netlink/Makefile deleted file mode 120000 index 94aaae2c4d..0000000000 --- a/src/libsystemd/sd-netlink/Makefile +++ /dev/null @@ -1 +0,0 @@ -../../Makefile
\ No newline at end of file diff --git a/src/libsystemd/sd-netlink/local-addresses.c b/src/libsystemd/sd-netlink/local-addresses.c deleted file mode 100644 index 6abd8fd0cc..0000000000 --- a/src/libsystemd/sd-netlink/local-addresses.c +++ /dev/null @@ -1,276 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2008-2011 Lennart Poettering - Copyright 2014 Tom Gundersen - - 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 <http://www.gnu.org/licenses/>. -***/ - -#include "sd-netlink.h" - -#include "alloc-util.h" -#include "local-addresses.h" -#include "macro.h" -#include "netlink-util.h" - -static int address_compare(const void *_a, const void *_b) { - const struct local_address *a = _a, *b = _b; - - /* Order lowest scope first, IPv4 before IPv6, lowest interface index first */ - - if (a->family == AF_INET && b->family == AF_INET6) - return -1; - if (a->family == AF_INET6 && b->family == AF_INET) - return 1; - - if (a->scope < b->scope) - return -1; - if (a->scope > b->scope) - return 1; - - if (a->metric < b->metric) - return -1; - if (a->metric > b->metric) - return 1; - - if (a->ifindex < b->ifindex) - return -1; - if (a->ifindex > b->ifindex) - return 1; - - return memcmp(&a->address, &b->address, FAMILY_ADDRESS_SIZE(a->family)); -} - -int local_addresses(sd_netlink *context, int ifindex, int af, struct local_address **ret) { - _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; - _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL; - _cleanup_free_ struct local_address *list = NULL; - size_t n_list = 0, n_allocated = 0; - sd_netlink_message *m; - int r; - - assert(ret); - - if (context) - rtnl = sd_netlink_ref(context); - else { - r = sd_netlink_open(&rtnl); - if (r < 0) - return r; - } - - r = sd_rtnl_message_new_addr(rtnl, &req, RTM_GETADDR, 0, af); - if (r < 0) - return r; - - r = sd_netlink_call(rtnl, req, 0, &reply); - if (r < 0) - return r; - - for (m = reply; m; m = sd_netlink_message_next(m)) { - struct local_address *a; - unsigned char flags; - uint16_t type; - int ifi, family; - - r = sd_netlink_message_get_errno(m); - if (r < 0) - return r; - - r = sd_netlink_message_get_type(m, &type); - if (r < 0) - return r; - if (type != RTM_NEWADDR) - continue; - - r = sd_rtnl_message_addr_get_ifindex(m, &ifi); - if (r < 0) - return r; - if (ifindex > 0 && ifi != ifindex) - continue; - - r = sd_rtnl_message_addr_get_family(m, &family); - if (r < 0) - return r; - if (af != AF_UNSPEC && af != family) - continue; - - r = sd_rtnl_message_addr_get_flags(m, &flags); - if (r < 0) - return r; - if (flags & IFA_F_DEPRECATED) - continue; - - if (!GREEDY_REALLOC0(list, n_allocated, n_list+1)) - return -ENOMEM; - - a = list + n_list; - - r = sd_rtnl_message_addr_get_scope(m, &a->scope); - if (r < 0) - return r; - - if (ifindex == 0 && (a->scope == RT_SCOPE_HOST || a->scope == RT_SCOPE_NOWHERE)) - continue; - - switch (family) { - - case AF_INET: - r = sd_netlink_message_read_in_addr(m, IFA_LOCAL, &a->address.in); - if (r < 0) { - r = sd_netlink_message_read_in_addr(m, IFA_ADDRESS, &a->address.in); - if (r < 0) - continue; - } - break; - - case AF_INET6: - r = sd_netlink_message_read_in6_addr(m, IFA_LOCAL, &a->address.in6); - if (r < 0) { - r = sd_netlink_message_read_in6_addr(m, IFA_ADDRESS, &a->address.in6); - if (r < 0) - continue; - } - break; - - default: - continue; - } - - a->ifindex = ifi; - a->family = family; - - n_list++; - }; - - if (n_list > 0) - qsort(list, n_list, sizeof(struct local_address), address_compare); - - *ret = list; - list = NULL; - - return (int) n_list; -} - -int local_gateways(sd_netlink *context, int ifindex, int af, struct local_address **ret) { - _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; - _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL; - _cleanup_free_ struct local_address *list = NULL; - sd_netlink_message *m = NULL; - size_t n_list = 0, n_allocated = 0; - int r; - - assert(ret); - - if (context) - rtnl = sd_netlink_ref(context); - else { - r = sd_netlink_open(&rtnl); - if (r < 0) - return r; - } - - r = sd_rtnl_message_new_route(rtnl, &req, RTM_GETROUTE, af, RTPROT_UNSPEC); - if (r < 0) - return r; - - r = sd_netlink_message_request_dump(req, true); - if (r < 0) - return r; - - r = sd_netlink_call(rtnl, req, 0, &reply); - if (r < 0) - return r; - - for (m = reply; m; m = sd_netlink_message_next(m)) { - struct local_address *a; - uint16_t type; - unsigned char dst_len, src_len; - uint32_t ifi; - int family; - - r = sd_netlink_message_get_errno(m); - if (r < 0) - return r; - - r = sd_netlink_message_get_type(m, &type); - if (r < 0) - return r; - if (type != RTM_NEWROUTE) - continue; - - /* We only care for default routes */ - r = sd_rtnl_message_route_get_dst_prefixlen(m, &dst_len); - if (r < 0) - return r; - if (dst_len != 0) - continue; - - r = sd_rtnl_message_route_get_src_prefixlen(m, &src_len); - if (r < 0) - return r; - if (src_len != 0) - continue; - - r = sd_netlink_message_read_u32(m, RTA_OIF, &ifi); - if (r < 0) - return r; - if (ifindex > 0 && (int) ifi != ifindex) - continue; - - r = sd_rtnl_message_route_get_family(m, &family); - if (r < 0) - return r; - if (af != AF_UNSPEC && af != family) - continue; - - if (!GREEDY_REALLOC0(list, n_allocated, n_list + 1)) - return -ENOMEM; - - a = list + n_list; - - switch (family) { - case AF_INET: - r = sd_netlink_message_read_in_addr(m, RTA_GATEWAY, &a->address.in); - if (r < 0) - continue; - - break; - case AF_INET6: - r = sd_netlink_message_read_in6_addr(m, RTA_GATEWAY, &a->address.in6); - if (r < 0) - continue; - - break; - default: - continue; - } - - sd_netlink_message_read_u32(m, RTA_PRIORITY, &a->metric); - - a->ifindex = ifi; - a->family = family; - - n_list++; - } - - if (n_list > 0) - qsort(list, n_list, sizeof(struct local_address), address_compare); - - *ret = list; - list = NULL; - - return (int) n_list; -} diff --git a/src/libsystemd/sd-netlink/local-addresses.h b/src/libsystemd/sd-netlink/local-addresses.h deleted file mode 100644 index 18d71e797e..0000000000 --- a/src/libsystemd/sd-netlink/local-addresses.h +++ /dev/null @@ -1,36 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2008-2011 Lennart Poettering - - 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 <http://www.gnu.org/licenses/>. -***/ - - -#include "sd-netlink.h" - -#include "in-addr-util.h" - -struct local_address { - int family, ifindex; - unsigned char scope; - uint32_t metric; - union in_addr_union address; -}; - -int local_addresses(sd_netlink *rtnl, int ifindex, int af, struct local_address **ret); - -int local_gateways(sd_netlink *rtnl, int ifindex, int af, struct local_address **ret); diff --git a/src/libsystemd/sd-netlink/netlink-internal.h b/src/libsystemd/sd-netlink/netlink-internal.h deleted file mode 100644 index dcfb080ad3..0000000000 --- a/src/libsystemd/sd-netlink/netlink-internal.h +++ /dev/null @@ -1,137 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2013 Tom Gundersen <teg@jklm.no> - - 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 <http://www.gnu.org/licenses/>. -***/ - -#include <linux/netlink.h> - -#include "sd-netlink.h" - -#include "list.h" -#include "netlink-types.h" -#include "prioq.h" -#include "refcnt.h" - -#define RTNL_DEFAULT_TIMEOUT ((usec_t) (25 * USEC_PER_SEC)) - -#define RTNL_WQUEUE_MAX 1024 -#define RTNL_RQUEUE_MAX 64*1024 - -#define RTNL_CONTAINER_DEPTH 32 - -struct reply_callback { - sd_netlink_message_handler_t callback; - void *userdata; - usec_t timeout; - uint64_t serial; - unsigned prioq_idx; -}; - -struct match_callback { - sd_netlink_message_handler_t callback; - uint16_t type; - void *userdata; - - LIST_FIELDS(struct match_callback, match_callbacks); -}; - -struct sd_netlink { - RefCount n_ref; - - int fd; - - union { - struct sockaddr sa; - struct sockaddr_nl nl; - } sockaddr; - - Hashmap *broadcast_group_refs; - bool broadcast_group_dont_leave:1; /* until we can rely on 4.2 */ - - sd_netlink_message **rqueue; - unsigned rqueue_size; - size_t rqueue_allocated; - - sd_netlink_message **rqueue_partial; - unsigned rqueue_partial_size; - size_t rqueue_partial_allocated; - - struct nlmsghdr *rbuffer; - size_t rbuffer_allocated; - - bool processing:1; - - uint32_t serial; - - struct Prioq *reply_callbacks_prioq; - Hashmap *reply_callbacks; - - LIST_HEAD(struct match_callback, match_callbacks); - - pid_t original_pid; - - sd_event_source *io_event_source; - sd_event_source *time_event_source; - sd_event_source *exit_event_source; - sd_event *event; -}; - -struct netlink_attribute { - size_t offset; /* offset from hdr to attribute */ - bool nested:1; - bool net_byteorder:1; -}; - -struct netlink_container { - const struct NLTypeSystem *type_system; /* the type system of the container */ - size_t offset; /* offset from hdr to the start of the container */ - struct netlink_attribute *attributes; - unsigned short n_attributes; /* number of attributes in container */ -}; - -struct sd_netlink_message { - RefCount n_ref; - - sd_netlink *rtnl; - - struct nlmsghdr *hdr; - struct netlink_container containers[RTNL_CONTAINER_DEPTH]; - unsigned n_containers; /* number of containers */ - bool sealed:1; - bool broadcast:1; - - sd_netlink_message *next; /* next in a chain of multi-part messages */ -}; - -int message_new(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t type); -int message_new_empty(sd_netlink *rtnl, sd_netlink_message **ret); - -int socket_open(int family); -int socket_bind(sd_netlink *nl); -int socket_broadcast_group_ref(sd_netlink *nl, unsigned group); -int socket_broadcast_group_unref(sd_netlink *nl, unsigned group); -int socket_write_message(sd_netlink *nl, sd_netlink_message *m); -int socket_read_message(sd_netlink *nl); - -int rtnl_rqueue_make_room(sd_netlink *rtnl); -int rtnl_rqueue_partial_make_room(sd_netlink *rtnl); - -/* Make sure callbacks don't destroy the rtnl connection */ -#define NETLINK_DONT_DESTROY(rtnl) \ - _cleanup_(sd_netlink_unrefp) _unused_ sd_netlink *_dont_destroy_##rtnl = sd_netlink_ref(rtnl) diff --git a/src/libsystemd/sd-netlink/netlink-message.c b/src/libsystemd/sd-netlink/netlink-message.c deleted file mode 100644 index 3a866fdafe..0000000000 --- a/src/libsystemd/sd-netlink/netlink-message.c +++ /dev/null @@ -1,964 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Tom Gundersen <teg@jklm.no> - - 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 <http://www.gnu.org/licenses/>. -***/ - -#include <netinet/in.h> -#include <stdbool.h> -#include <unistd.h> - -#include "sd-netlink.h" - -#include "alloc-util.h" -#include "formats-util.h" -#include "missing.h" -#include "netlink-internal.h" -#include "netlink-types.h" -#include "netlink-util.h" -#include "refcnt.h" -#include "socket-util.h" -#include "util.h" - -#define GET_CONTAINER(m, i) ((i) < (m)->n_containers ? (struct rtattr*)((uint8_t*)(m)->hdr + (m)->containers[i].offset) : NULL) -#define PUSH_CONTAINER(m, new) (m)->container_offsets[(m)->n_containers ++] = (uint8_t*)(new) - (uint8_t*)(m)->hdr; - -#define RTA_TYPE(rta) ((rta)->rta_type & NLA_TYPE_MASK) -#define RTA_FLAGS(rta) ((rta)->rta_type & ~NLA_TYPE_MASK) - -int message_new_empty(sd_netlink *rtnl, sd_netlink_message **ret) { - sd_netlink_message *m; - - assert_return(ret, -EINVAL); - - /* Note that 'rtnl' is currently unused, if we start using it internally - we must take care to avoid problems due to mutual references between - buses and their queued messages. See sd-bus. - */ - - m = new0(sd_netlink_message, 1); - if (!m) - return -ENOMEM; - - m->n_ref = REFCNT_INIT; - - m->sealed = false; - - *ret = m; - - return 0; -} - -int message_new(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t type) { - _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL; - const NLType *nl_type; - size_t size; - int r; - - r = type_system_get_type(&type_system_root, &nl_type, type); - if (r < 0) - return r; - - if (type_get_type(nl_type) != NETLINK_TYPE_NESTED) - return -EINVAL; - - r = message_new_empty(rtnl, &m); - if (r < 0) - return r; - - size = NLMSG_SPACE(type_get_size(nl_type)); - - assert(size >= sizeof(struct nlmsghdr)); - m->hdr = malloc0(size); - if (!m->hdr) - return -ENOMEM; - - m->hdr->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK; - - type_get_type_system(nl_type, &m->containers[0].type_system); - m->hdr->nlmsg_len = size; - m->hdr->nlmsg_type = type; - - *ret = m; - m = NULL; - - return 0; -} - -int sd_netlink_message_request_dump(sd_netlink_message *m, int dump) { - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(m->hdr->nlmsg_type == RTM_GETLINK || - m->hdr->nlmsg_type == RTM_GETADDR || - m->hdr->nlmsg_type == RTM_GETROUTE || - m->hdr->nlmsg_type == RTM_GETNEIGH, - -EINVAL); - - if (dump) - m->hdr->nlmsg_flags |= NLM_F_DUMP; - else - m->hdr->nlmsg_flags &= ~NLM_F_DUMP; - - return 0; -} - -sd_netlink_message *sd_netlink_message_ref(sd_netlink_message *m) { - if (m) - assert_se(REFCNT_INC(m->n_ref) >= 2); - - return m; -} - -sd_netlink_message *sd_netlink_message_unref(sd_netlink_message *m) { - if (m && REFCNT_DEC(m->n_ref) == 0) { - unsigned i; - - free(m->hdr); - - for (i = 0; i <= m->n_containers; i++) - free(m->containers[i].attributes); - - sd_netlink_message_unref(m->next); - - free(m); - } - - return NULL; -} - -int sd_netlink_message_get_type(sd_netlink_message *m, uint16_t *type) { - assert_return(m, -EINVAL); - assert_return(type, -EINVAL); - - *type = m->hdr->nlmsg_type; - - return 0; -} - -int sd_netlink_message_set_flags(sd_netlink_message *m, uint16_t flags) { - assert_return(m, -EINVAL); - assert_return(flags, -EINVAL); - - m->hdr->nlmsg_flags = flags; - - return 0; -} - -int sd_netlink_message_is_broadcast(sd_netlink_message *m) { - assert_return(m, -EINVAL); - - return m->broadcast; -} - -/* If successful the updated message will be correctly aligned, if - unsuccessful the old message is untouched. */ -static int add_rtattr(sd_netlink_message *m, unsigned short type, const void *data, size_t data_length) { - uint32_t rta_length; - size_t message_length, padding_length; - struct nlmsghdr *new_hdr; - struct rtattr *rta; - char *padding; - unsigned i; - int offset; - - assert(m); - assert(m->hdr); - assert(!m->sealed); - assert(NLMSG_ALIGN(m->hdr->nlmsg_len) == m->hdr->nlmsg_len); - assert(!data || data_length); - - /* get offset of the new attribute */ - offset = m->hdr->nlmsg_len; - - /* get the size of the new rta attribute (with padding at the end) */ - rta_length = RTA_LENGTH(data_length); - - /* get the new message size (with padding at the end) */ - message_length = offset + RTA_ALIGN(rta_length); - - /* realloc to fit the new attribute */ - new_hdr = realloc(m->hdr, message_length); - if (!new_hdr) - return -ENOMEM; - m->hdr = new_hdr; - - /* get pointer to the attribute we are about to add */ - rta = (struct rtattr *) ((uint8_t *) m->hdr + offset); - - /* if we are inside containers, extend them */ - for (i = 0; i < m->n_containers; i++) - GET_CONTAINER(m, i)->rta_len += message_length - offset; - - /* fill in the attribute */ - rta->rta_type = type; - rta->rta_len = rta_length; - if (data) - /* we don't deal with the case where the user lies about the type - * and gives us too little data (so don't do that) - */ - padding = mempcpy(RTA_DATA(rta), data, data_length); - else { - /* if no data was passed, make sure we still initialize the padding - note that we can have data_length > 0 (used by some containers) */ - padding = RTA_DATA(rta); - } - - /* make sure also the padding at the end of the message is initialized */ - padding_length = (uint8_t*)m->hdr + message_length - (uint8_t*)padding; - memzero(padding, padding_length); - - /* update message size */ - m->hdr->nlmsg_len = message_length; - - return offset; -} - -static int message_attribute_has_type(sd_netlink_message *m, size_t *out_size, uint16_t attribute_type, uint16_t data_type) { - const NLType *type; - int r; - - assert(m); - - r = type_system_get_type(m->containers[m->n_containers].type_system, &type, attribute_type); - if (r < 0) - return r; - - if (type_get_type(type) != data_type) - return -EINVAL; - - if (out_size) - *out_size = type_get_size(type); - return 0; -} - -int sd_netlink_message_append_string(sd_netlink_message *m, unsigned short type, const char *data) { - size_t length, size; - int r; - - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - assert_return(data, -EINVAL); - - r = message_attribute_has_type(m, &size, type, NETLINK_TYPE_STRING); - if (r < 0) - return r; - - if (size) { - length = strnlen(data, size+1); - if (length > size) - return -EINVAL; - } else - length = strlen(data); - - r = add_rtattr(m, type, data, length + 1); - if (r < 0) - return r; - - return 0; -} - -int sd_netlink_message_append_flag(sd_netlink_message *m, unsigned short type) { - size_t size; - int r; - - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - - r = message_attribute_has_type(m, &size, type, NETLINK_TYPE_FLAG); - if (r < 0) - return r; - - r = add_rtattr(m, type, NULL, 0); - if (r < 0) - return r; - - return 0; -} - -int sd_netlink_message_append_u8(sd_netlink_message *m, unsigned short type, uint8_t data) { - int r; - - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - - r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_U8); - if (r < 0) - return r; - - r = add_rtattr(m, type, &data, sizeof(uint8_t)); - if (r < 0) - return r; - - return 0; -} - - -int sd_netlink_message_append_u16(sd_netlink_message *m, unsigned short type, uint16_t data) { - int r; - - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - - r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_U16); - if (r < 0) - return r; - - r = add_rtattr(m, type, &data, sizeof(uint16_t)); - if (r < 0) - return r; - - return 0; -} - -int sd_netlink_message_append_u32(sd_netlink_message *m, unsigned short type, uint32_t data) { - int r; - - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - - r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_U32); - if (r < 0) - return r; - - r = add_rtattr(m, type, &data, sizeof(uint32_t)); - if (r < 0) - return r; - - return 0; -} - -int sd_netlink_message_append_data(sd_netlink_message *m, unsigned short type, const void *data, size_t len) { - int r; - - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - - r = add_rtattr(m, type, &data, len); - if (r < 0) - return r; - - return 0; -} - -int sd_netlink_message_append_in_addr(sd_netlink_message *m, unsigned short type, const struct in_addr *data) { - int r; - - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - assert_return(data, -EINVAL); - - r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_IN_ADDR); - if (r < 0) - return r; - - r = add_rtattr(m, type, data, sizeof(struct in_addr)); - if (r < 0) - return r; - - return 0; -} - -int sd_netlink_message_append_in6_addr(sd_netlink_message *m, unsigned short type, const struct in6_addr *data) { - int r; - - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - assert_return(data, -EINVAL); - - r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_IN_ADDR); - if (r < 0) - return r; - - r = add_rtattr(m, type, data, sizeof(struct in6_addr)); - if (r < 0) - return r; - - return 0; -} - -int sd_netlink_message_append_ether_addr(sd_netlink_message *m, unsigned short type, const struct ether_addr *data) { - int r; - - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - assert_return(data, -EINVAL); - - r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_ETHER_ADDR); - if (r < 0) - return r; - - r = add_rtattr(m, type, data, ETH_ALEN); - if (r < 0) - return r; - - return 0; -} - -int sd_netlink_message_append_cache_info(sd_netlink_message *m, unsigned short type, const struct ifa_cacheinfo *info) { - int r; - - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - assert_return(info, -EINVAL); - - r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_CACHE_INFO); - if (r < 0) - return r; - - r = add_rtattr(m, type, info, sizeof(struct ifa_cacheinfo)); - if (r < 0) - return r; - - return 0; -} - -int sd_netlink_message_open_container(sd_netlink_message *m, unsigned short type) { - size_t size; - int r; - - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - assert_return(m->n_containers < RTNL_CONTAINER_DEPTH, -ERANGE); - - r = message_attribute_has_type(m, &size, type, NETLINK_TYPE_NESTED); - if (r < 0) { - const NLTypeSystemUnion *type_system_union; - int family; - - r = message_attribute_has_type(m, &size, type, NETLINK_TYPE_UNION); - if (r < 0) - return r; - - r = sd_rtnl_message_get_family(m, &family); - if (r < 0) - return r; - - r = type_system_get_type_system_union(m->containers[m->n_containers].type_system, &type_system_union, type); - if (r < 0) - return r; - - r = type_system_union_protocol_get_type_system(type_system_union, - &m->containers[m->n_containers + 1].type_system, - family); - if (r < 0) - return r; - } else { - r = type_system_get_type_system(m->containers[m->n_containers].type_system, - &m->containers[m->n_containers + 1].type_system, - type); - if (r < 0) - return r; - } - - r = add_rtattr(m, type | NLA_F_NESTED, NULL, size); - if (r < 0) - return r; - - m->containers[m->n_containers ++].offset = r; - - return 0; -} - -int sd_netlink_message_open_container_union(sd_netlink_message *m, unsigned short type, const char *key) { - const NLTypeSystemUnion *type_system_union; - int r; - - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - - r = type_system_get_type_system_union(m->containers[m->n_containers].type_system, &type_system_union, type); - if (r < 0) - return r; - - r = type_system_union_get_type_system(type_system_union, - &m->containers[m->n_containers + 1].type_system, - key); - if (r < 0) - return r; - - r = sd_netlink_message_append_string(m, type_system_union->match, key); - if (r < 0) - return r; - - /* do we evere need non-null size */ - r = add_rtattr(m, type | NLA_F_NESTED, NULL, 0); - if (r < 0) - return r; - - m->containers[m->n_containers ++].offset = r; - - return 0; -} - - -int sd_netlink_message_close_container(sd_netlink_message *m) { - assert_return(m, -EINVAL); - assert_return(!m->sealed, -EPERM); - assert_return(m->n_containers > 0, -EINVAL); - - m->containers[m->n_containers].type_system = NULL; - m->n_containers --; - - return 0; -} - -static int netlink_message_read_internal(sd_netlink_message *m, unsigned short type, void **data, bool *net_byteorder) { - struct netlink_attribute *attribute; - struct rtattr *rta; - - assert_return(m, -EINVAL); - assert_return(m->sealed, -EPERM); - assert_return(data, -EINVAL); - assert(m->n_containers < RTNL_CONTAINER_DEPTH); - assert(m->containers[m->n_containers].attributes); - assert(type < m->containers[m->n_containers].n_attributes); - - attribute = &m->containers[m->n_containers].attributes[type]; - - if(!attribute->offset) - return -ENODATA; - - rta = (struct rtattr*)((uint8_t *) m->hdr + attribute->offset); - - *data = RTA_DATA(rta); - - if (net_byteorder) - *net_byteorder = attribute->net_byteorder; - - return RTA_PAYLOAD(rta); -} - -int sd_netlink_message_read_string(sd_netlink_message *m, unsigned short type, const char **data) { - int r; - void *attr_data; - - assert_return(m, -EINVAL); - - r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_STRING); - if (r < 0) - return r; - - r = netlink_message_read_internal(m, type, &attr_data, NULL); - if (r < 0) - return r; - else if (strnlen(attr_data, r) >= (size_t) r) - return -EIO; - - if (data) - *data = (const char *) attr_data; - - return 0; -} - -int sd_netlink_message_read_u8(sd_netlink_message *m, unsigned short type, uint8_t *data) { - int r; - void *attr_data; - - assert_return(m, -EINVAL); - - r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_U8); - if (r < 0) - return r; - - r = netlink_message_read_internal(m, type, &attr_data, NULL); - if (r < 0) - return r; - else if ((size_t) r < sizeof(uint8_t)) - return -EIO; - - if (data) - *data = *(uint8_t *) attr_data; - - return 0; -} - -int sd_netlink_message_read_u16(sd_netlink_message *m, unsigned short type, uint16_t *data) { - void *attr_data; - bool net_byteorder; - int r; - - assert_return(m, -EINVAL); - - r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_U16); - if (r < 0) - return r; - - r = netlink_message_read_internal(m, type, &attr_data, &net_byteorder); - if (r < 0) - return r; - else if ((size_t) r < sizeof(uint16_t)) - return -EIO; - - if (data) { - if (net_byteorder) - *data = be16toh(*(uint16_t *) attr_data); - else - *data = *(uint16_t *) attr_data; - } - - return 0; -} - -int sd_netlink_message_read_u32(sd_netlink_message *m, unsigned short type, uint32_t *data) { - void *attr_data; - bool net_byteorder; - int r; - - assert_return(m, -EINVAL); - - r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_U32); - if (r < 0) - return r; - - r = netlink_message_read_internal(m, type, &attr_data, &net_byteorder); - if (r < 0) - return r; - else if ((size_t)r < sizeof(uint32_t)) - return -EIO; - - if (data) { - if (net_byteorder) - *data = be32toh(*(uint32_t *) attr_data); - else - *data = *(uint32_t *) attr_data; - } - - return 0; -} - -int sd_netlink_message_read_ether_addr(sd_netlink_message *m, unsigned short type, struct ether_addr *data) { - int r; - void *attr_data; - - assert_return(m, -EINVAL); - - r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_ETHER_ADDR); - if (r < 0) - return r; - - r = netlink_message_read_internal(m, type, &attr_data, NULL); - if (r < 0) - return r; - else if ((size_t)r < sizeof(struct ether_addr)) - return -EIO; - - if (data) - memcpy(data, attr_data, sizeof(struct ether_addr)); - - return 0; -} - -int sd_netlink_message_read_cache_info(sd_netlink_message *m, unsigned short type, struct ifa_cacheinfo *info) { - int r; - void *attr_data; - - assert_return(m, -EINVAL); - - r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_CACHE_INFO); - if (r < 0) - return r; - - r = netlink_message_read_internal(m, type, &attr_data, NULL); - if (r < 0) - return r; - else if ((size_t)r < sizeof(struct ifa_cacheinfo)) - return -EIO; - - if (info) - memcpy(info, attr_data, sizeof(struct ifa_cacheinfo)); - - return 0; -} - -int sd_netlink_message_read_in_addr(sd_netlink_message *m, unsigned short type, struct in_addr *data) { - int r; - void *attr_data; - - assert_return(m, -EINVAL); - - r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_IN_ADDR); - if (r < 0) - return r; - - r = netlink_message_read_internal(m, type, &attr_data, NULL); - if (r < 0) - return r; - else if ((size_t)r < sizeof(struct in_addr)) - return -EIO; - - if (data) - memcpy(data, attr_data, sizeof(struct in_addr)); - - return 0; -} - -int sd_netlink_message_read_in6_addr(sd_netlink_message *m, unsigned short type, struct in6_addr *data) { - int r; - void *attr_data; - - assert_return(m, -EINVAL); - - r = message_attribute_has_type(m, NULL, type, NETLINK_TYPE_IN_ADDR); - if (r < 0) - return r; - - r = netlink_message_read_internal(m, type, &attr_data, NULL); - if (r < 0) - return r; - else if ((size_t)r < sizeof(struct in6_addr)) - return -EIO; - - if (data) - memcpy(data, attr_data, sizeof(struct in6_addr)); - - return 0; -} - -static int netlink_container_parse(sd_netlink_message *m, - struct netlink_container *container, - int count, - struct rtattr *rta, - unsigned int rt_len) { - _cleanup_free_ struct netlink_attribute *attributes = NULL; - - attributes = new0(struct netlink_attribute, count); - if(!attributes) - return -ENOMEM; - - for (; RTA_OK(rta, rt_len); rta = RTA_NEXT(rta, rt_len)) { - unsigned short type; - - type = RTA_TYPE(rta); - - /* if the kernel is newer than the headers we used - when building, we ignore out-of-range attributes */ - if (type >= count) - continue; - - if (attributes[type].offset) - log_debug("rtnl: message parse - overwriting repeated attribute"); - - attributes[type].offset = (uint8_t *) rta - (uint8_t *) m->hdr; - attributes[type].nested = RTA_FLAGS(rta) & NLA_F_NESTED; - attributes[type].net_byteorder = RTA_FLAGS(rta) & NLA_F_NET_BYTEORDER; - } - - container->attributes = attributes; - attributes = NULL; - container->n_attributes = count; - - return 0; -} - -int sd_netlink_message_enter_container(sd_netlink_message *m, unsigned short type_id) { - const NLType *nl_type; - const NLTypeSystem *type_system; - void *container; - uint16_t type; - size_t size; - int r; - - assert_return(m, -EINVAL); - assert_return(m->n_containers < RTNL_CONTAINER_DEPTH, -EINVAL); - - r = type_system_get_type(m->containers[m->n_containers].type_system, - &nl_type, - type_id); - if (r < 0) - return r; - - type = type_get_type(nl_type); - - if (type == NETLINK_TYPE_NESTED) { - r = type_system_get_type_system(m->containers[m->n_containers].type_system, - &type_system, - type_id); - if (r < 0) - return r; - } else if (type == NETLINK_TYPE_UNION) { - const NLTypeSystemUnion *type_system_union; - - r = type_system_get_type_system_union(m->containers[m->n_containers].type_system, - &type_system_union, - type_id); - if (r < 0) - return r; - - switch (type_system_union->match_type) { - case NL_MATCH_SIBLING: - { - const char *key; - - r = sd_netlink_message_read_string(m, type_system_union->match, &key); - if (r < 0) - return r; - - r = type_system_union_get_type_system(type_system_union, - &type_system, - key); - if (r < 0) - return r; - - break; - } - case NL_MATCH_PROTOCOL: - { - int family; - - r = sd_rtnl_message_get_family(m, &family); - if (r < 0) - return r; - - r = type_system_union_protocol_get_type_system(type_system_union, - &type_system, - family); - if (r < 0) - return r; - - break; - } - default: - assert_not_reached("sd-netlink: invalid type system union type"); - } - } else - return -EINVAL; - - r = netlink_message_read_internal(m, type_id, &container, NULL); - if (r < 0) - return r; - else - size = (size_t)r; - - m->n_containers ++; - - r = netlink_container_parse(m, - &m->containers[m->n_containers], - type_system_get_count(type_system), - container, - size); - if (r < 0) { - m->n_containers --; - return r; - } - - m->containers[m->n_containers].type_system = type_system; - - return 0; -} - -int sd_netlink_message_exit_container(sd_netlink_message *m) { - assert_return(m, -EINVAL); - assert_return(m->sealed, -EINVAL); - assert_return(m->n_containers > 0, -EINVAL); - - m->containers[m->n_containers].attributes = mfree(m->containers[m->n_containers].attributes); - m->containers[m->n_containers].type_system = NULL; - - m->n_containers --; - - return 0; -} - -uint32_t rtnl_message_get_serial(sd_netlink_message *m) { - assert(m); - assert(m->hdr); - - return m->hdr->nlmsg_seq; -} - -int sd_netlink_message_is_error(sd_netlink_message *m) { - assert_return(m, 0); - assert_return(m->hdr, 0); - - return m->hdr->nlmsg_type == NLMSG_ERROR; -} - -int sd_netlink_message_get_errno(sd_netlink_message *m) { - struct nlmsgerr *err; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - - if (!sd_netlink_message_is_error(m)) - return 0; - - err = NLMSG_DATA(m->hdr); - - return err->error; -} - -int sd_netlink_message_rewind(sd_netlink_message *m) { - const NLType *nl_type; - uint16_t type; - size_t size; - unsigned i; - int r; - - assert_return(m, -EINVAL); - - /* don't allow appending to message once parsed */ - if (!m->sealed) - rtnl_message_seal(m); - - for (i = 1; i <= m->n_containers; i++) - m->containers[i].attributes = mfree(m->containers[i].attributes); - - m->n_containers = 0; - - if (m->containers[0].attributes) - /* top-level attributes have already been parsed */ - return 0; - - assert(m->hdr); - - r = type_system_get_type(&type_system_root, &nl_type, m->hdr->nlmsg_type); - if (r < 0) - return r; - - type = type_get_type(nl_type); - size = type_get_size(nl_type); - - if (type == NETLINK_TYPE_NESTED) { - const NLTypeSystem *type_system; - - type_get_type_system(nl_type, &type_system); - - m->containers[0].type_system = type_system; - - r = netlink_container_parse(m, - &m->containers[m->n_containers], - type_system_get_count(type_system), - (struct rtattr*)((uint8_t*)NLMSG_DATA(m->hdr) + NLMSG_ALIGN(size)), - NLMSG_PAYLOAD(m->hdr, size)); - if (r < 0) - return r; - } - - return 0; -} - -void rtnl_message_seal(sd_netlink_message *m) { - assert(m); - assert(!m->sealed); - - m->sealed = true; -} - -sd_netlink_message *sd_netlink_message_next(sd_netlink_message *m) { - assert_return(m, NULL); - - return m->next; -} diff --git a/src/libsystemd/sd-netlink/netlink-socket.c b/src/libsystemd/sd-netlink/netlink-socket.c deleted file mode 100644 index 590fc53fc7..0000000000 --- a/src/libsystemd/sd-netlink/netlink-socket.c +++ /dev/null @@ -1,474 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Tom Gundersen <teg@jklm.no> - - 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 <http://www.gnu.org/licenses/>. -***/ - -#include <netinet/in.h> -#include <stdbool.h> -#include <unistd.h> - -#include "sd-netlink.h" - -#include "alloc-util.h" -#include "formats-util.h" -#include "missing.h" -#include "netlink-internal.h" -#include "netlink-types.h" -#include "netlink-util.h" -#include "refcnt.h" -#include "socket-util.h" -#include "util.h" - -int socket_open(int family) { - int fd; - - fd = socket(PF_NETLINK, SOCK_RAW|SOCK_CLOEXEC|SOCK_NONBLOCK, family); - if (fd < 0) - return -errno; - - return fd; -} - -static int broadcast_groups_get(sd_netlink *nl) { - _cleanup_free_ uint32_t *groups = NULL; - socklen_t len = 0, old_len; - unsigned i, j; - int r; - - assert(nl); - assert(nl->fd >= 0); - - r = getsockopt(nl->fd, SOL_NETLINK, NETLINK_LIST_MEMBERSHIPS, NULL, &len); - if (r < 0) { - if (errno == ENOPROTOOPT) { - nl->broadcast_group_dont_leave = true; - return 0; - } else - return -errno; - } - - if (len == 0) - return 0; - - groups = new0(uint32_t, len); - if (!groups) - return -ENOMEM; - - old_len = len; - - r = getsockopt(nl->fd, SOL_NETLINK, NETLINK_LIST_MEMBERSHIPS, groups, &len); - if (r < 0) - return -errno; - - if (old_len != len) - return -EIO; - - r = hashmap_ensure_allocated(&nl->broadcast_group_refs, NULL); - if (r < 0) - return r; - - for (i = 0; i < len; i++) { - for (j = 0; j < sizeof(uint32_t) * 8; j ++) { - uint32_t offset; - unsigned group; - - offset = 1U << j; - - if (!(groups[i] & offset)) - continue; - - group = i * sizeof(uint32_t) * 8 + j + 1; - - r = hashmap_put(nl->broadcast_group_refs, UINT_TO_PTR(group), UINT_TO_PTR(1)); - if (r < 0) - return r; - } - } - - return 0; -} - -int socket_bind(sd_netlink *nl) { - socklen_t addrlen; - int r, one = 1; - - r = setsockopt(nl->fd, SOL_NETLINK, NETLINK_PKTINFO, &one, sizeof(one)); - if (r < 0) - return -errno; - - addrlen = sizeof(nl->sockaddr); - - r = bind(nl->fd, &nl->sockaddr.sa, addrlen); - /* ignore EINVAL to allow opening an already bound socket */ - if (r < 0 && errno != EINVAL) - return -errno; - - r = getsockname(nl->fd, &nl->sockaddr.sa, &addrlen); - if (r < 0) - return -errno; - - r = broadcast_groups_get(nl); - if (r < 0) - return r; - - return 0; -} - -static unsigned broadcast_group_get_ref(sd_netlink *nl, unsigned group) { - assert(nl); - - return PTR_TO_UINT(hashmap_get(nl->broadcast_group_refs, UINT_TO_PTR(group))); -} - -static int broadcast_group_set_ref(sd_netlink *nl, unsigned group, unsigned n_ref) { - int r; - - assert(nl); - - r = hashmap_replace(nl->broadcast_group_refs, UINT_TO_PTR(group), UINT_TO_PTR(n_ref)); - if (r < 0) - return r; - - return 0; -} - -static int broadcast_group_join(sd_netlink *nl, unsigned group) { - int r; - - assert(nl); - assert(nl->fd >= 0); - assert(group > 0); - - r = setsockopt(nl->fd, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, &group, sizeof(group)); - if (r < 0) - return -errno; - - return 0; -} - -int socket_broadcast_group_ref(sd_netlink *nl, unsigned group) { - unsigned n_ref; - int r; - - assert(nl); - - n_ref = broadcast_group_get_ref(nl, group); - - n_ref ++; - - r = hashmap_ensure_allocated(&nl->broadcast_group_refs, NULL); - if (r < 0) - return r; - - r = broadcast_group_set_ref(nl, group, n_ref); - if (r < 0) - return r; - - if (n_ref > 1) - /* not yet in the group */ - return 0; - - r = broadcast_group_join(nl, group); - if (r < 0) - return r; - - return 0; -} - -static int broadcast_group_leave(sd_netlink *nl, unsigned group) { - int r; - - assert(nl); - assert(nl->fd >= 0); - assert(group > 0); - - if (nl->broadcast_group_dont_leave) - return 0; - - r = setsockopt(nl->fd, SOL_NETLINK, NETLINK_DROP_MEMBERSHIP, &group, sizeof(group)); - if (r < 0) - return -errno; - - return 0; -} - -int socket_broadcast_group_unref(sd_netlink *nl, unsigned group) { - unsigned n_ref; - int r; - - assert(nl); - - n_ref = broadcast_group_get_ref(nl, group); - - assert(n_ref > 0); - - n_ref --; - - r = broadcast_group_set_ref(nl, group, n_ref); - if (r < 0) - return r; - - if (n_ref > 0) - /* still refs left */ - return 0; - - r = broadcast_group_leave(nl, group); - if (r < 0) - return r; - - return 0; -} - -/* returns the number of bytes sent, or a negative error code */ -int socket_write_message(sd_netlink *nl, sd_netlink_message *m) { - union { - struct sockaddr sa; - struct sockaddr_nl nl; - } addr = { - .nl.nl_family = AF_NETLINK, - }; - ssize_t k; - - assert(nl); - assert(m); - assert(m->hdr); - - k = sendto(nl->fd, m->hdr, m->hdr->nlmsg_len, - 0, &addr.sa, sizeof(addr)); - if (k < 0) - return -errno; - - return k; -} - -static int socket_recv_message(int fd, struct iovec *iov, uint32_t *_group, bool peek) { - union sockaddr_union sender; - uint8_t cmsg_buffer[CMSG_SPACE(sizeof(struct nl_pktinfo))]; - struct msghdr msg = { - .msg_iov = iov, - .msg_iovlen = 1, - .msg_name = &sender, - .msg_namelen = sizeof(sender), - .msg_control = cmsg_buffer, - .msg_controllen = sizeof(cmsg_buffer), - }; - struct cmsghdr *cmsg; - uint32_t group = 0; - int r; - - assert(fd >= 0); - assert(iov); - - r = recvmsg(fd, &msg, MSG_TRUNC | (peek ? MSG_PEEK : 0)); - if (r < 0) { - /* no data */ - if (errno == ENOBUFS) - log_debug("rtnl: kernel receive buffer overrun"); - else if (errno == EAGAIN) - log_debug("rtnl: no data in socket"); - - return (errno == EAGAIN || errno == EINTR) ? 0 : -errno; - } - - if (sender.nl.nl_pid != 0) { - /* not from the kernel, ignore */ - log_debug("rtnl: ignoring message from portid %"PRIu32, sender.nl.nl_pid); - - if (peek) { - /* drop the message */ - r = recvmsg(fd, &msg, 0); - if (r < 0) - return (errno == EAGAIN || errno == EINTR) ? 0 : -errno; - } - - return 0; - } - - CMSG_FOREACH(cmsg, &msg) { - if (cmsg->cmsg_level == SOL_NETLINK && - cmsg->cmsg_type == NETLINK_PKTINFO && - cmsg->cmsg_len == CMSG_LEN(sizeof(struct nl_pktinfo))) { - struct nl_pktinfo *pktinfo = (void *)CMSG_DATA(cmsg); - - /* multi-cast group */ - group = pktinfo->group; - } - } - - if (_group) - *_group = group; - - return r; -} - -/* On success, the number of bytes received is returned and *ret points to the received message - * which has a valid header and the correct size. - * If nothing useful was received 0 is returned. - * On failure, a negative error code is returned. - */ -int socket_read_message(sd_netlink *rtnl) { - _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *first = NULL; - struct iovec iov = {}; - uint32_t group = 0; - bool multi_part = false, done = false; - struct nlmsghdr *new_msg; - size_t len; - int r; - unsigned i = 0; - - assert(rtnl); - assert(rtnl->rbuffer); - assert(rtnl->rbuffer_allocated >= sizeof(struct nlmsghdr)); - - /* read nothing, just get the pending message size */ - r = socket_recv_message(rtnl->fd, &iov, NULL, true); - if (r <= 0) - return r; - else - len = (size_t)r; - - /* make room for the pending message */ - if (!greedy_realloc((void **)&rtnl->rbuffer, - &rtnl->rbuffer_allocated, - len, sizeof(uint8_t))) - return -ENOMEM; - - iov.iov_base = rtnl->rbuffer; - iov.iov_len = rtnl->rbuffer_allocated; - - /* read the pending message */ - r = socket_recv_message(rtnl->fd, &iov, &group, false); - if (r <= 0) - return r; - else - len = (size_t)r; - - if (len > rtnl->rbuffer_allocated) - /* message did not fit in read buffer */ - return -EIO; - - if (NLMSG_OK(rtnl->rbuffer, len) && rtnl->rbuffer->nlmsg_flags & NLM_F_MULTI) { - multi_part = true; - - for (i = 0; i < rtnl->rqueue_partial_size; i++) { - if (rtnl_message_get_serial(rtnl->rqueue_partial[i]) == - rtnl->rbuffer->nlmsg_seq) { - first = rtnl->rqueue_partial[i]; - break; - } - } - } - - for (new_msg = rtnl->rbuffer; NLMSG_OK(new_msg, len) && !done; new_msg = NLMSG_NEXT(new_msg, len)) { - _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL; - const NLType *nl_type; - - if (!group && new_msg->nlmsg_pid != rtnl->sockaddr.nl.nl_pid) - /* not broadcast and not for us */ - continue; - - if (new_msg->nlmsg_type == NLMSG_NOOP) - /* silently drop noop messages */ - continue; - - if (new_msg->nlmsg_type == NLMSG_DONE) { - /* finished reading multi-part message */ - done = true; - - /* if first is not defined, put NLMSG_DONE into the receive queue. */ - if (first) - continue; - } - - /* check that we support this message type */ - r = type_system_get_type(&type_system_root, &nl_type, new_msg->nlmsg_type); - if (r < 0) { - if (r == -EOPNOTSUPP) - log_debug("sd-netlink: ignored message with unknown type: %i", - new_msg->nlmsg_type); - - continue; - } - - /* check that the size matches the message type */ - if (new_msg->nlmsg_len < NLMSG_LENGTH(type_get_size(nl_type))) { - log_debug("sd-netlink: message larger than expected, dropping"); - continue; - } - - r = message_new_empty(rtnl, &m); - if (r < 0) - return r; - - m->broadcast = !!group; - - m->hdr = memdup(new_msg, new_msg->nlmsg_len); - if (!m->hdr) - return -ENOMEM; - - /* seal and parse the top-level message */ - r = sd_netlink_message_rewind(m); - if (r < 0) - return r; - - /* push the message onto the multi-part message stack */ - if (first) - m->next = first; - first = m; - m = NULL; - } - - if (len) - log_debug("sd-netlink: discarding %zu bytes of incoming message", len); - - if (!first) - return 0; - - if (!multi_part || done) { - /* we got a complete message, push it on the read queue */ - r = rtnl_rqueue_make_room(rtnl); - if (r < 0) - return r; - - rtnl->rqueue[rtnl->rqueue_size ++] = first; - first = NULL; - - if (multi_part && (i < rtnl->rqueue_partial_size)) { - /* remove the message form the partial read queue */ - memmove(rtnl->rqueue_partial + i,rtnl->rqueue_partial + i + 1, - sizeof(sd_netlink_message*) * (rtnl->rqueue_partial_size - i - 1)); - rtnl->rqueue_partial_size --; - } - - return 1; - } else { - /* we only got a partial multi-part message, push it on the - partial read queue */ - if (i < rtnl->rqueue_partial_size) { - rtnl->rqueue_partial[i] = first; - } else { - r = rtnl_rqueue_partial_make_room(rtnl); - if (r < 0) - return r; - - rtnl->rqueue_partial[rtnl->rqueue_partial_size ++] = first; - } - first = NULL; - - return 0; - } -} diff --git a/src/libsystemd/sd-netlink/netlink-types.c b/src/libsystemd/sd-netlink/netlink-types.c deleted file mode 100644 index a5758bb516..0000000000 --- a/src/libsystemd/sd-netlink/netlink-types.c +++ /dev/null @@ -1,653 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2014 Tom Gundersen <teg@jklm.no> - - 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 <http://www.gnu.org/licenses/>. -***/ - -#include <stdint.h> -#include <sys/socket.h> -#include <linux/netlink.h> -#include <linux/rtnetlink.h> -#include <linux/in6.h> -#include <linux/veth.h> -#include <linux/if_bridge.h> -#include <linux/if_addr.h> -#include <linux/if.h> -#include <linux/ip.h> -#include <linux/if_link.h> -#include <linux/if_tunnel.h> - -#include "macro.h" -#include "missing.h" -#include "netlink-types.h" -#include "string-table.h" -#include "util.h" - -/* Maximum ARP IP target defined in kernel */ -#define BOND_MAX_ARP_TARGETS 16 - -typedef enum { - BOND_ARP_TARGETS_0, - BOND_ARP_TARGETS_1, - BOND_ARP_TARGETS_2, - BOND_ARP_TARGETS_3, - BOND_ARP_TARGETS_4, - BOND_ARP_TARGETS_5, - BOND_ARP_TARGETS_6, - BOND_ARP_TARGETS_7, - BOND_ARP_TARGETS_8, - BOND_ARP_TARGETS_9, - BOND_ARP_TARGETS_10, - BOND_ARP_TARGETS_11, - BOND_ARP_TARGETS_12, - BOND_ARP_TARGETS_13, - BOND_ARP_TARGETS_14, - BOND_ARP_TARGETS_MAX = BOND_MAX_ARP_TARGETS, -} BondArpTargets; - -struct NLType { - uint16_t type; - size_t size; - const NLTypeSystem *type_system; - const NLTypeSystemUnion *type_system_union; -}; - -struct NLTypeSystem { - uint16_t count; - const NLType *types; -}; - -static const NLTypeSystem rtnl_link_type_system; - -static const NLType empty_types[1] = { - /* fake array to avoid .types==NULL, which denotes invalid type-systems */ -}; - -static const NLTypeSystem empty_type_system = { - .count = 0, - .types = empty_types, -}; - -static const NLType rtnl_link_info_data_veth_types[] = { - [VETH_INFO_PEER] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) }, -}; - -static const NLType rtnl_link_info_data_ipvlan_types[] = { - [IFLA_IPVLAN_MODE] = { .type = NETLINK_TYPE_U16 }, -}; - -static const NLType rtnl_link_info_data_macvlan_types[] = { - [IFLA_MACVLAN_MODE] = { .type = NETLINK_TYPE_U32 }, - [IFLA_MACVLAN_FLAGS] = { .type = NETLINK_TYPE_U16 }, -}; - -static const NLType rtnl_link_info_data_bridge_types[] = { - [IFLA_BR_FORWARD_DELAY] = { .type = NETLINK_TYPE_U32 }, - [IFLA_BR_HELLO_TIME] = { .type = NETLINK_TYPE_U32 }, - [IFLA_BR_MAX_AGE] = { .type = NETLINK_TYPE_U32 }, - [IFLA_BR_AGEING_TIME] = { .type = NETLINK_TYPE_U32 }, - [IFLA_BR_STP_STATE] = { .type = NETLINK_TYPE_U32 }, - [IFLA_BR_PRIORITY] = { .type = NETLINK_TYPE_U16 }, -}; - -static const NLType rtnl_link_info_data_vlan_types[] = { - [IFLA_VLAN_ID] = { .type = NETLINK_TYPE_U16 }, -/* - [IFLA_VLAN_FLAGS] = { .len = sizeof(struct ifla_vlan_flags) }, - [IFLA_VLAN_EGRESS_QOS] = { .type = NETLINK_TYPE_NESTED }, - [IFLA_VLAN_INGRESS_QOS] = { .type = NETLINK_TYPE_NESTED }, -*/ - [IFLA_VLAN_PROTOCOL] = { .type = NETLINK_TYPE_U16 }, -}; - -static const NLType rtnl_link_info_data_vxlan_types[] = { - [IFLA_VXLAN_ID] = { .type = NETLINK_TYPE_U32 }, - [IFLA_VXLAN_GROUP] = { .type = NETLINK_TYPE_IN_ADDR }, - [IFLA_VXLAN_LINK] = { .type = NETLINK_TYPE_U32 }, - [IFLA_VXLAN_LOCAL] = { .type = NETLINK_TYPE_U32}, - [IFLA_VXLAN_TTL] = { .type = NETLINK_TYPE_U8 }, - [IFLA_VXLAN_TOS] = { .type = NETLINK_TYPE_U8 }, - [IFLA_VXLAN_LEARNING] = { .type = NETLINK_TYPE_U8 }, - [IFLA_VXLAN_AGEING] = { .type = NETLINK_TYPE_U32 }, - [IFLA_VXLAN_LIMIT] = { .type = NETLINK_TYPE_U32 }, - [IFLA_VXLAN_PORT_RANGE] = { .type = NETLINK_TYPE_U32}, - [IFLA_VXLAN_PROXY] = { .type = NETLINK_TYPE_U8 }, - [IFLA_VXLAN_RSC] = { .type = NETLINK_TYPE_U8 }, - [IFLA_VXLAN_L2MISS] = { .type = NETLINK_TYPE_U8 }, - [IFLA_VXLAN_L3MISS] = { .type = NETLINK_TYPE_U8 }, - [IFLA_VXLAN_PORT] = { .type = NETLINK_TYPE_U16 }, - [IFLA_VXLAN_GROUP6] = { .type = NETLINK_TYPE_IN_ADDR }, - [IFLA_VXLAN_LOCAL6] = { .type = NETLINK_TYPE_IN_ADDR }, - [IFLA_VXLAN_UDP_CSUM] = { .type = NETLINK_TYPE_U8 }, - [IFLA_VXLAN_UDP_ZERO_CSUM6_TX] = { .type = NETLINK_TYPE_U8 }, - [IFLA_VXLAN_UDP_ZERO_CSUM6_RX] = { .type = NETLINK_TYPE_U8 }, - [IFLA_VXLAN_REMCSUM_TX] = { .type = NETLINK_TYPE_U8 }, - [IFLA_VXLAN_REMCSUM_RX] = { .type = NETLINK_TYPE_U8 }, - [IFLA_VXLAN_GBP] = { .type = NETLINK_TYPE_FLAG }, - [IFLA_VXLAN_REMCSUM_NOPARTIAL] = { .type = NETLINK_TYPE_FLAG }, -}; - -static const NLType rtnl_bond_arp_target_types[] = { - [BOND_ARP_TARGETS_0] = { .type = NETLINK_TYPE_U32 }, - [BOND_ARP_TARGETS_1] = { .type = NETLINK_TYPE_U32 }, - [BOND_ARP_TARGETS_2] = { .type = NETLINK_TYPE_U32 }, - [BOND_ARP_TARGETS_3] = { .type = NETLINK_TYPE_U32 }, - [BOND_ARP_TARGETS_4] = { .type = NETLINK_TYPE_U32 }, - [BOND_ARP_TARGETS_5] = { .type = NETLINK_TYPE_U32 }, - [BOND_ARP_TARGETS_6] = { .type = NETLINK_TYPE_U32 }, - [BOND_ARP_TARGETS_7] = { .type = NETLINK_TYPE_U32 }, - [BOND_ARP_TARGETS_8] = { .type = NETLINK_TYPE_U32 }, - [BOND_ARP_TARGETS_9] = { .type = NETLINK_TYPE_U32 }, - [BOND_ARP_TARGETS_10] = { .type = NETLINK_TYPE_U32 }, - [BOND_ARP_TARGETS_11] = { .type = NETLINK_TYPE_U32 }, - [BOND_ARP_TARGETS_12] = { .type = NETLINK_TYPE_U32 }, - [BOND_ARP_TARGETS_13] = { .type = NETLINK_TYPE_U32 }, - [BOND_ARP_TARGETS_14] = { .type = NETLINK_TYPE_U32 }, - [BOND_ARP_TARGETS_MAX] = { .type = NETLINK_TYPE_U32 }, -}; - -static const NLTypeSystem rtnl_bond_arp_type_system = { - .count = ELEMENTSOF(rtnl_bond_arp_target_types), - .types = rtnl_bond_arp_target_types, -}; - -static const NLType rtnl_link_info_data_bond_types[] = { - [IFLA_BOND_MODE] = { .type = NETLINK_TYPE_U8 }, - [IFLA_BOND_ACTIVE_SLAVE] = { .type = NETLINK_TYPE_U32 }, - [IFLA_BOND_MIIMON] = { .type = NETLINK_TYPE_U32 }, - [IFLA_BOND_UPDELAY] = { .type = NETLINK_TYPE_U32 }, - [IFLA_BOND_DOWNDELAY] = { .type = NETLINK_TYPE_U32 }, - [IFLA_BOND_USE_CARRIER] = { .type = NETLINK_TYPE_U8 }, - [IFLA_BOND_ARP_INTERVAL] = { .type = NETLINK_TYPE_U32 }, - [IFLA_BOND_ARP_IP_TARGET] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_bond_arp_type_system }, - [IFLA_BOND_ARP_VALIDATE] = { .type = NETLINK_TYPE_U32 }, - [IFLA_BOND_ARP_ALL_TARGETS] = { .type = NETLINK_TYPE_U32 }, - [IFLA_BOND_PRIMARY] = { .type = NETLINK_TYPE_U32 }, - [IFLA_BOND_PRIMARY_RESELECT] = { .type = NETLINK_TYPE_U8 }, - [IFLA_BOND_FAIL_OVER_MAC] = { .type = NETLINK_TYPE_U8 }, - [IFLA_BOND_XMIT_HASH_POLICY] = { .type = NETLINK_TYPE_U8 }, - [IFLA_BOND_RESEND_IGMP] = { .type = NETLINK_TYPE_U32 }, - [IFLA_BOND_NUM_PEER_NOTIF] = { .type = NETLINK_TYPE_U8 }, - [IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NETLINK_TYPE_U8 }, - [IFLA_BOND_MIN_LINKS] = { .type = NETLINK_TYPE_U32 }, - [IFLA_BOND_LP_INTERVAL] = { .type = NETLINK_TYPE_U32 }, - [IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NETLINK_TYPE_U32 }, - [IFLA_BOND_AD_LACP_RATE] = { .type = NETLINK_TYPE_U8 }, - [IFLA_BOND_AD_SELECT] = { .type = NETLINK_TYPE_U8 }, - [IFLA_BOND_AD_INFO] = { .type = NETLINK_TYPE_NESTED }, -}; - -static const NLType rtnl_link_info_data_iptun_types[] = { - [IFLA_IPTUN_LINK] = { .type = NETLINK_TYPE_U32 }, - [IFLA_IPTUN_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR }, - [IFLA_IPTUN_REMOTE] = { .type = NETLINK_TYPE_IN_ADDR }, - [IFLA_IPTUN_TTL] = { .type = NETLINK_TYPE_U8 }, - [IFLA_IPTUN_TOS] = { .type = NETLINK_TYPE_U8 }, - [IFLA_IPTUN_PMTUDISC] = { .type = NETLINK_TYPE_U8 }, - [IFLA_IPTUN_FLAGS] = { .type = NETLINK_TYPE_U16 }, - [IFLA_IPTUN_PROTO] = { .type = NETLINK_TYPE_U8 }, - [IFLA_IPTUN_6RD_PREFIX] = { .type = NETLINK_TYPE_IN_ADDR }, - [IFLA_IPTUN_6RD_RELAY_PREFIX] = { .type = NETLINK_TYPE_U32 }, - [IFLA_IPTUN_6RD_PREFIXLEN] = { .type = NETLINK_TYPE_U16 }, - [IFLA_IPTUN_6RD_RELAY_PREFIXLEN] = { .type = NETLINK_TYPE_U16 }, - [IFLA_IPTUN_ENCAP_TYPE] = { .type = NETLINK_TYPE_U16 }, - [IFLA_IPTUN_ENCAP_FLAGS] = { .type = NETLINK_TYPE_U16 }, - [IFLA_IPTUN_ENCAP_SPORT] = { .type = NETLINK_TYPE_U16 }, - [IFLA_IPTUN_ENCAP_DPORT] = { .type = NETLINK_TYPE_U16 }, -}; - -static const NLType rtnl_link_info_data_ipgre_types[] = { - [IFLA_GRE_LINK] = { .type = NETLINK_TYPE_U32 }, - [IFLA_GRE_IFLAGS] = { .type = NETLINK_TYPE_U16 }, - [IFLA_GRE_OFLAGS] = { .type = NETLINK_TYPE_U16 }, - [IFLA_GRE_IKEY] = { .type = NETLINK_TYPE_U32 }, - [IFLA_GRE_OKEY] = { .type = NETLINK_TYPE_U32 }, - [IFLA_GRE_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR }, - [IFLA_GRE_REMOTE] = { .type = NETLINK_TYPE_IN_ADDR }, - [IFLA_GRE_TTL] = { .type = NETLINK_TYPE_U8 }, - [IFLA_GRE_TOS] = { .type = NETLINK_TYPE_U8 }, - [IFLA_GRE_PMTUDISC] = { .type = NETLINK_TYPE_U8 }, - [IFLA_GRE_FLOWINFO] = { .type = NETLINK_TYPE_U32 }, - [IFLA_GRE_FLAGS] = { .type = NETLINK_TYPE_U32 }, - [IFLA_GRE_ENCAP_TYPE] = { .type = NETLINK_TYPE_U16 }, - [IFLA_GRE_ENCAP_FLAGS] = { .type = NETLINK_TYPE_U16 }, - [IFLA_GRE_ENCAP_SPORT] = { .type = NETLINK_TYPE_U16 }, - [IFLA_GRE_ENCAP_DPORT] = { .type = NETLINK_TYPE_U16 }, -}; - -static const NLType rtnl_link_info_data_ipvti_types[] = { - [IFLA_VTI_LINK] = { .type = NETLINK_TYPE_U32 }, - [IFLA_VTI_IKEY] = { .type = NETLINK_TYPE_U32 }, - [IFLA_VTI_OKEY] = { .type = NETLINK_TYPE_U32 }, - [IFLA_VTI_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR }, - [IFLA_VTI_REMOTE] = { .type = NETLINK_TYPE_IN_ADDR }, -}; - -static const NLType rtnl_link_info_data_ip6tnl_types[] = { - [IFLA_IPTUN_LINK] = { .type = NETLINK_TYPE_U32 }, - [IFLA_IPTUN_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR }, - [IFLA_IPTUN_REMOTE] = { .type = NETLINK_TYPE_IN_ADDR }, - [IFLA_IPTUN_TTL] = { .type = NETLINK_TYPE_U8 }, - [IFLA_IPTUN_FLAGS] = { .type = NETLINK_TYPE_U32 }, - [IFLA_IPTUN_PROTO] = { .type = NETLINK_TYPE_U8 }, - [IFLA_IPTUN_ENCAP_LIMIT] = { .type = NETLINK_TYPE_U8 }, - [IFLA_IPTUN_FLOWINFO] = { .type = NETLINK_TYPE_U32 }, -}; - -/* these strings must match the .kind entries in the kernel */ -static const char* const nl_union_link_info_data_table[] = { - [NL_UNION_LINK_INFO_DATA_BOND] = "bond", - [NL_UNION_LINK_INFO_DATA_BRIDGE] = "bridge", - [NL_UNION_LINK_INFO_DATA_VLAN] = "vlan", - [NL_UNION_LINK_INFO_DATA_VETH] = "veth", - [NL_UNION_LINK_INFO_DATA_DUMMY] = "dummy", - [NL_UNION_LINK_INFO_DATA_MACVLAN] = "macvlan", - [NL_UNION_LINK_INFO_DATA_MACVTAP] = "macvtap", - [NL_UNION_LINK_INFO_DATA_IPVLAN] = "ipvlan", - [NL_UNION_LINK_INFO_DATA_VXLAN] = "vxlan", - [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = "ipip", - [NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL] = "gre", - [NL_UNION_LINK_INFO_DATA_IPGRETAP_TUNNEL] = "gretap", - [NL_UNION_LINK_INFO_DATA_IP6GRE_TUNNEL] = "ip6gre", - [NL_UNION_LINK_INFO_DATA_IP6GRETAP_TUNNEL] = "ip6gretap", - [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = "sit", - [NL_UNION_LINK_INFO_DATA_VTI_TUNNEL] = "vti", - [NL_UNION_LINK_INFO_DATA_VTI6_TUNNEL] = "vti6", - [NL_UNION_LINK_INFO_DATA_IP6TNL_TUNNEL] = "ip6tnl", -}; - -DEFINE_STRING_TABLE_LOOKUP(nl_union_link_info_data, NLUnionLinkInfoData); - -static const NLTypeSystem rtnl_link_info_data_type_systems[] = { - [NL_UNION_LINK_INFO_DATA_BOND] = { .count = ELEMENTSOF(rtnl_link_info_data_bond_types), - .types = rtnl_link_info_data_bond_types }, - [NL_UNION_LINK_INFO_DATA_BRIDGE] = { .count = ELEMENTSOF(rtnl_link_info_data_bridge_types), - .types = rtnl_link_info_data_bridge_types }, - [NL_UNION_LINK_INFO_DATA_VLAN] = { .count = ELEMENTSOF(rtnl_link_info_data_vlan_types), - .types = rtnl_link_info_data_vlan_types }, - [NL_UNION_LINK_INFO_DATA_VETH] = { .count = ELEMENTSOF(rtnl_link_info_data_veth_types), - .types = rtnl_link_info_data_veth_types }, - [NL_UNION_LINK_INFO_DATA_MACVLAN] = { .count = ELEMENTSOF(rtnl_link_info_data_macvlan_types), - .types = rtnl_link_info_data_macvlan_types }, - [NL_UNION_LINK_INFO_DATA_MACVTAP] = { .count = ELEMENTSOF(rtnl_link_info_data_macvlan_types), - .types = rtnl_link_info_data_macvlan_types }, - [NL_UNION_LINK_INFO_DATA_IPVLAN] = { .count = ELEMENTSOF(rtnl_link_info_data_ipvlan_types), - .types = rtnl_link_info_data_ipvlan_types }, - [NL_UNION_LINK_INFO_DATA_VXLAN] = { .count = ELEMENTSOF(rtnl_link_info_data_vxlan_types), - .types = rtnl_link_info_data_vxlan_types }, - [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_iptun_types), - .types = rtnl_link_info_data_iptun_types }, - [NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipgre_types), - .types = rtnl_link_info_data_ipgre_types }, - [NL_UNION_LINK_INFO_DATA_IPGRETAP_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipgre_types), - .types = rtnl_link_info_data_ipgre_types }, - [NL_UNION_LINK_INFO_DATA_IP6GRE_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipgre_types), - .types = rtnl_link_info_data_ipgre_types }, - [NL_UNION_LINK_INFO_DATA_IP6GRETAP_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipgre_types), - .types = rtnl_link_info_data_ipgre_types }, - [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_iptun_types), - .types = rtnl_link_info_data_iptun_types }, - [NL_UNION_LINK_INFO_DATA_VTI_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipvti_types), - .types = rtnl_link_info_data_ipvti_types }, - [NL_UNION_LINK_INFO_DATA_VTI6_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ipvti_types), - .types = rtnl_link_info_data_ipvti_types }, - [NL_UNION_LINK_INFO_DATA_IP6TNL_TUNNEL] = { .count = ELEMENTSOF(rtnl_link_info_data_ip6tnl_types), - .types = rtnl_link_info_data_ip6tnl_types }, - -}; - -static const NLTypeSystemUnion rtnl_link_info_data_type_system_union = { - .num = _NL_UNION_LINK_INFO_DATA_MAX, - .lookup = nl_union_link_info_data_from_string, - .type_systems = rtnl_link_info_data_type_systems, - .match_type = NL_MATCH_SIBLING, - .match = IFLA_INFO_KIND, -}; - -static const NLType rtnl_link_info_types[] = { - [IFLA_INFO_KIND] = { .type = NETLINK_TYPE_STRING }, - [IFLA_INFO_DATA] = { .type = NETLINK_TYPE_UNION, .type_system_union = &rtnl_link_info_data_type_system_union}, -/* - [IFLA_INFO_XSTATS], - [IFLA_INFO_SLAVE_KIND] = { .type = NETLINK_TYPE_STRING }, - [IFLA_INFO_SLAVE_DATA] = { .type = NETLINK_TYPE_NESTED }, -*/ -}; - -static const NLTypeSystem rtnl_link_info_type_system = { - .count = ELEMENTSOF(rtnl_link_info_types), - .types = rtnl_link_info_types, -}; - -static const struct NLType rtnl_prot_info_bridge_port_types[] = { - [IFLA_BRPORT_STATE] = { .type = NETLINK_TYPE_U8 }, - [IFLA_BRPORT_COST] = { .type = NETLINK_TYPE_U32 }, - [IFLA_BRPORT_PRIORITY] = { .type = NETLINK_TYPE_U16 }, - [IFLA_BRPORT_MODE] = { .type = NETLINK_TYPE_U8 }, - [IFLA_BRPORT_GUARD] = { .type = NETLINK_TYPE_U8 }, - [IFLA_BRPORT_PROTECT] = { .type = NETLINK_TYPE_U8 }, - [IFLA_BRPORT_FAST_LEAVE] = { .type = NETLINK_TYPE_U8 }, - [IFLA_BRPORT_LEARNING] = { .type = NETLINK_TYPE_U8 }, - [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NETLINK_TYPE_U8 }, - [IFLA_BRPORT_PROXYARP] = { .type = NETLINK_TYPE_U8 }, - [IFLA_BRPORT_LEARNING_SYNC] = { .type = NETLINK_TYPE_U8 }, -}; - -static const NLTypeSystem rtnl_prot_info_type_systems[] = { - [AF_BRIDGE] = { .count = ELEMENTSOF(rtnl_prot_info_bridge_port_types), - .types = rtnl_prot_info_bridge_port_types }, -}; - -static const NLTypeSystemUnion rtnl_prot_info_type_system_union = { - .num = AF_MAX, - .type_systems = rtnl_prot_info_type_systems, - .match_type = NL_MATCH_PROTOCOL, -}; - -static const struct NLType rtnl_af_spec_inet6_types[] = { - [IFLA_INET6_FLAGS] = { .type = NETLINK_TYPE_U32 }, -/* - IFLA_INET6_CONF, - IFLA_INET6_STATS, - IFLA_INET6_MCAST, - IFLA_INET6_CACHEINFO, - IFLA_INET6_ICMP6STATS, -*/ - [IFLA_INET6_TOKEN] = { .type = NETLINK_TYPE_IN_ADDR }, - [IFLA_INET6_ADDR_GEN_MODE] = { .type = NETLINK_TYPE_U8 }, -}; - -static const NLTypeSystem rtnl_af_spec_inet6_type_system = { - .count = ELEMENTSOF(rtnl_af_spec_inet6_types), - .types = rtnl_af_spec_inet6_types, -}; - -static const NLType rtnl_af_spec_types[] = { - [AF_INET6] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_af_spec_inet6_type_system }, -}; - -static const NLTypeSystem rtnl_af_spec_type_system = { - .count = ELEMENTSOF(rtnl_af_spec_types), - .types = rtnl_af_spec_types, -}; - -static const NLType rtnl_link_types[] = { - [IFLA_ADDRESS] = { .type = NETLINK_TYPE_ETHER_ADDR }, - [IFLA_BROADCAST] = { .type = NETLINK_TYPE_ETHER_ADDR }, - [IFLA_IFNAME] = { .type = NETLINK_TYPE_STRING, .size = IFNAMSIZ - 1 }, - [IFLA_MTU] = { .type = NETLINK_TYPE_U32 }, - [IFLA_LINK] = { .type = NETLINK_TYPE_U32 }, -/* - [IFLA_QDISC], - [IFLA_STATS], - [IFLA_COST], - [IFLA_PRIORITY], -*/ - [IFLA_MASTER] = { .type = NETLINK_TYPE_U32 }, -/* - [IFLA_WIRELESS], -*/ - [IFLA_PROTINFO] = { .type = NETLINK_TYPE_UNION, .type_system_union = &rtnl_prot_info_type_system_union }, - [IFLA_TXQLEN] = { .type = NETLINK_TYPE_U32 }, -/* - [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) }, -*/ - [IFLA_WEIGHT] = { .type = NETLINK_TYPE_U32 }, - [IFLA_OPERSTATE] = { .type = NETLINK_TYPE_U8 }, - [IFLA_LINKMODE] = { .type = NETLINK_TYPE_U8 }, - [IFLA_LINKINFO] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_info_type_system }, - [IFLA_NET_NS_PID] = { .type = NETLINK_TYPE_U32 }, - [IFLA_IFALIAS] = { .type = NETLINK_TYPE_STRING, .size = IFALIASZ - 1 }, -/* - [IFLA_NUM_VF], - [IFLA_VFINFO_LIST] = {. type = NETLINK_TYPE_NESTED, }, - [IFLA_STATS64], - [IFLA_VF_PORTS] = { .type = NETLINK_TYPE_NESTED }, - [IFLA_PORT_SELF] = { .type = NETLINK_TYPE_NESTED }, -*/ - [IFLA_AF_SPEC] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_af_spec_type_system }, -/* - [IFLA_VF_PORTS], - [IFLA_PORT_SELF], - [IFLA_AF_SPEC], -*/ - [IFLA_GROUP] = { .type = NETLINK_TYPE_U32 }, - [IFLA_NET_NS_FD] = { .type = NETLINK_TYPE_U32 }, - [IFLA_EXT_MASK] = { .type = NETLINK_TYPE_U32 }, - [IFLA_PROMISCUITY] = { .type = NETLINK_TYPE_U32 }, - [IFLA_NUM_TX_QUEUES] = { .type = NETLINK_TYPE_U32 }, - [IFLA_NUM_RX_QUEUES] = { .type = NETLINK_TYPE_U32 }, - [IFLA_CARRIER] = { .type = NETLINK_TYPE_U8 }, -/* - [IFLA_PHYS_PORT_ID] = { .type = NETLINK_TYPE_BINARY, .len = MAX_PHYS_PORT_ID_LEN }, -*/ -}; - -static const NLTypeSystem rtnl_link_type_system = { - .count = ELEMENTSOF(rtnl_link_types), - .types = rtnl_link_types, -}; - -/* IFA_FLAGS was defined in kernel 3.14, but we still support older - * kernels where IFA_MAX is lower. */ -static const NLType rtnl_address_types[] = { - [IFA_ADDRESS] = { .type = NETLINK_TYPE_IN_ADDR }, - [IFA_LOCAL] = { .type = NETLINK_TYPE_IN_ADDR }, - [IFA_LABEL] = { .type = NETLINK_TYPE_STRING, .size = IFNAMSIZ - 1 }, - [IFA_BROADCAST] = { .type = NETLINK_TYPE_IN_ADDR }, /* 6? */ - [IFA_CACHEINFO] = { .type = NETLINK_TYPE_CACHE_INFO, .size = sizeof(struct ifa_cacheinfo) }, -/* - [IFA_ANYCAST], - [IFA_MULTICAST], -*/ - [IFA_FLAGS] = { .type = NETLINK_TYPE_U32 }, -}; - -static const NLTypeSystem rtnl_address_type_system = { - .count = ELEMENTSOF(rtnl_address_types), - .types = rtnl_address_types, -}; - -static const NLType rtnl_route_types[] = { - [RTA_DST] = { .type = NETLINK_TYPE_IN_ADDR }, /* 6? */ - [RTA_SRC] = { .type = NETLINK_TYPE_IN_ADDR }, /* 6? */ - [RTA_IIF] = { .type = NETLINK_TYPE_U32 }, - [RTA_OIF] = { .type = NETLINK_TYPE_U32 }, - [RTA_GATEWAY] = { .type = NETLINK_TYPE_IN_ADDR }, - [RTA_PRIORITY] = { .type = NETLINK_TYPE_U32 }, - [RTA_PREFSRC] = { .type = NETLINK_TYPE_IN_ADDR }, /* 6? */ -/* - [RTA_METRICS] = { .type = NETLINK_TYPE_NESTED }, - [RTA_MULTIPATH] = { .len = sizeof(struct rtnexthop) }, -*/ - [RTA_FLOW] = { .type = NETLINK_TYPE_U32 }, /* 6? */ -/* - RTA_CACHEINFO, - RTA_TABLE, - RTA_MARK, - RTA_MFC_STATS, - RTA_VIA, - RTA_NEWDST, -*/ - [RTA_PREF] = { .type = NETLINK_TYPE_U8 }, - -}; - -static const NLTypeSystem rtnl_route_type_system = { - .count = ELEMENTSOF(rtnl_route_types), - .types = rtnl_route_types, -}; - -static const NLType rtnl_neigh_types[] = { - [NDA_DST] = { .type = NETLINK_TYPE_IN_ADDR }, - [NDA_LLADDR] = { .type = NETLINK_TYPE_ETHER_ADDR }, - [NDA_CACHEINFO] = { .type = NETLINK_TYPE_CACHE_INFO, .size = sizeof(struct nda_cacheinfo) }, - [NDA_PROBES] = { .type = NETLINK_TYPE_U32 }, - [NDA_VLAN] = { .type = NETLINK_TYPE_U16 }, - [NDA_PORT] = { .type = NETLINK_TYPE_U16 }, - [NDA_VNI] = { .type = NETLINK_TYPE_U32 }, - [NDA_IFINDEX] = { .type = NETLINK_TYPE_U32 }, -}; - -static const NLTypeSystem rtnl_neigh_type_system = { - .count = ELEMENTSOF(rtnl_neigh_types), - .types = rtnl_neigh_types, -}; - -static const NLType rtnl_types[] = { - [NLMSG_DONE] = { .type = NETLINK_TYPE_NESTED, .type_system = &empty_type_system, .size = 0 }, - [NLMSG_ERROR] = { .type = NETLINK_TYPE_NESTED, .type_system = &empty_type_system, .size = sizeof(struct nlmsgerr) }, - [RTM_NEWLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) }, - [RTM_DELLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) }, - [RTM_GETLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) }, - [RTM_SETLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) }, - [RTM_NEWADDR] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) }, - [RTM_DELADDR] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) }, - [RTM_GETADDR] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) }, - [RTM_NEWROUTE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) }, - [RTM_DELROUTE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) }, - [RTM_GETROUTE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) }, - [RTM_NEWNEIGH] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) }, - [RTM_DELNEIGH] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) }, - [RTM_GETNEIGH] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) }, -}; - -const NLTypeSystem type_system_root = { - .count = ELEMENTSOF(rtnl_types), - .types = rtnl_types, -}; - -uint16_t type_get_type(const NLType *type) { - assert(type); - return type->type; -} - -size_t type_get_size(const NLType *type) { - assert(type); - return type->size; -} - -void type_get_type_system(const NLType *nl_type, const NLTypeSystem **ret) { - assert(nl_type); - assert(ret); - assert(nl_type->type == NETLINK_TYPE_NESTED); - assert(nl_type->type_system); - - *ret = nl_type->type_system; -} - -void type_get_type_system_union(const NLType *nl_type, const NLTypeSystemUnion **ret) { - assert(nl_type); - assert(ret); - assert(nl_type->type == NETLINK_TYPE_UNION); - assert(nl_type->type_system_union); - - *ret = nl_type->type_system_union; -} - -uint16_t type_system_get_count(const NLTypeSystem *type_system) { - assert(type_system); - return type_system->count; -} - -int type_system_get_type(const NLTypeSystem *type_system, const NLType **ret, uint16_t type) { - const NLType *nl_type; - - assert(ret); - assert(type_system); - assert(type_system->types); - - if (type >= type_system->count) - return -EOPNOTSUPP; - - nl_type = &type_system->types[type]; - - if (nl_type->type == NETLINK_TYPE_UNSPEC) - return -EOPNOTSUPP; - - *ret = nl_type; - - return 0; -} - -int type_system_get_type_system(const NLTypeSystem *type_system, const NLTypeSystem **ret, uint16_t type) { - const NLType *nl_type; - int r; - - assert(ret); - - r = type_system_get_type(type_system, &nl_type, type); - if (r < 0) - return r; - - type_get_type_system(nl_type, ret); - return 0; -} - -int type_system_get_type_system_union(const NLTypeSystem *type_system, const NLTypeSystemUnion **ret, uint16_t type) { - const NLType *nl_type; - int r; - - assert(ret); - - r = type_system_get_type(type_system, &nl_type, type); - if (r < 0) - return r; - - type_get_type_system_union(nl_type, ret); - return 0; -} - -int type_system_union_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, const char *key) { - int type; - - assert(type_system_union); - assert(type_system_union->match_type == NL_MATCH_SIBLING); - assert(type_system_union->lookup); - assert(type_system_union->type_systems); - assert(ret); - assert(key); - - type = type_system_union->lookup(key); - if (type < 0) - return -EOPNOTSUPP; - - assert(type < type_system_union->num); - - *ret = &type_system_union->type_systems[type]; - - return 0; -} - -int type_system_union_protocol_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, uint16_t protocol) { - const NLTypeSystem *type_system; - - assert(type_system_union); - assert(type_system_union->type_systems); - assert(type_system_union->match_type == NL_MATCH_PROTOCOL); - assert(ret); - - if (protocol >= type_system_union->num) - return -EOPNOTSUPP; - - type_system = &type_system_union->type_systems[protocol]; - if (!type_system->types) - return -EOPNOTSUPP; - - *ret = type_system; - - return 0; -} diff --git a/src/libsystemd/sd-netlink/netlink-types.h b/src/libsystemd/sd-netlink/netlink-types.h deleted file mode 100644 index ecb20bfcdc..0000000000 --- a/src/libsystemd/sd-netlink/netlink-types.h +++ /dev/null @@ -1,94 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2014 Tom Gundersen <teg@jklm.no> - - 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 <http://www.gnu.org/licenses/>. -***/ - -#include "macro.h" - -enum { - NETLINK_TYPE_UNSPEC, - NETLINK_TYPE_U8, /* NLA_U8 */ - NETLINK_TYPE_U16, /* NLA_U16 */ - NETLINK_TYPE_U32, /* NLA_U32 */ - NETLINK_TYPE_U64, /* NLA_U64 */ - NETLINK_TYPE_STRING, /* NLA_STRING */ - NETLINK_TYPE_FLAG, /* NLA_FLAG */ - NETLINK_TYPE_IN_ADDR, - NETLINK_TYPE_ETHER_ADDR, - NETLINK_TYPE_CACHE_INFO, - NETLINK_TYPE_NESTED, /* NLA_NESTED */ - NETLINK_TYPE_UNION, -}; - -typedef enum NLMatchType { - NL_MATCH_SIBLING, - NL_MATCH_PROTOCOL, -} NLMatchType; - -typedef struct NLTypeSystemUnion NLTypeSystemUnion; -typedef struct NLTypeSystem NLTypeSystem; -typedef struct NLType NLType; - -struct NLTypeSystemUnion { - int num; - NLMatchType match_type; - uint16_t match; - int (*lookup)(const char *); - const NLTypeSystem *type_systems; -}; - -extern const NLTypeSystem type_system_root; - -uint16_t type_get_type(const NLType *type); -size_t type_get_size(const NLType *type); -void type_get_type_system(const NLType *type, const NLTypeSystem **ret); -void type_get_type_system_union(const NLType *type, const NLTypeSystemUnion **ret); - -uint16_t type_system_get_count(const NLTypeSystem *type_system); -int type_system_get_type(const NLTypeSystem *type_system, const NLType **ret, uint16_t type); -int type_system_get_type_system(const NLTypeSystem *type_system, const NLTypeSystem **ret, uint16_t type); -int type_system_get_type_system_union(const NLTypeSystem *type_system, const NLTypeSystemUnion **ret, uint16_t type); -int type_system_union_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, const char *key); -int type_system_union_protocol_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, uint16_t protocol); - -typedef enum NLUnionLinkInfoData { - NL_UNION_LINK_INFO_DATA_BOND, - NL_UNION_LINK_INFO_DATA_BRIDGE, - NL_UNION_LINK_INFO_DATA_VLAN, - NL_UNION_LINK_INFO_DATA_VETH, - NL_UNION_LINK_INFO_DATA_DUMMY, - NL_UNION_LINK_INFO_DATA_MACVLAN, - NL_UNION_LINK_INFO_DATA_MACVTAP, - NL_UNION_LINK_INFO_DATA_IPVLAN, - NL_UNION_LINK_INFO_DATA_VXLAN, - NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL, - NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL, - NL_UNION_LINK_INFO_DATA_IPGRETAP_TUNNEL, - NL_UNION_LINK_INFO_DATA_IP6GRE_TUNNEL, - NL_UNION_LINK_INFO_DATA_IP6GRETAP_TUNNEL, - NL_UNION_LINK_INFO_DATA_SIT_TUNNEL, - NL_UNION_LINK_INFO_DATA_VTI_TUNNEL, - NL_UNION_LINK_INFO_DATA_VTI6_TUNNEL, - NL_UNION_LINK_INFO_DATA_IP6TNL_TUNNEL, - _NL_UNION_LINK_INFO_DATA_MAX, - _NL_UNION_LINK_INFO_DATA_INVALID = -1 -} NLUnionLinkInfoData; - -const char *nl_union_link_info_data_to_string(NLUnionLinkInfoData p) _const_; -NLUnionLinkInfoData nl_union_link_info_data_from_string(const char *p) _pure_; diff --git a/src/libsystemd/sd-netlink/netlink-util.c b/src/libsystemd/sd-netlink/netlink-util.c deleted file mode 100644 index 73b9ac0258..0000000000 --- a/src/libsystemd/sd-netlink/netlink-util.c +++ /dev/null @@ -1,170 +0,0 @@ -/*** - This file is part of systemd. - - Copyright (C) 2013 Tom Gundersen <teg@jklm.no> - - 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 <http://www.gnu.org/licenses/>. -***/ - -#include "sd-netlink.h" - -#include "netlink-internal.h" -#include "netlink-util.h" - -int rtnl_set_link_name(sd_netlink **rtnl, int ifindex, const char *name) { - _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL; - int r; - - assert(rtnl); - assert(ifindex > 0); - assert(name); - - if (!*rtnl) { - r = sd_netlink_open(rtnl); - if (r < 0) - return r; - } - - r = sd_rtnl_message_new_link(*rtnl, &message, RTM_SETLINK, ifindex); - if (r < 0) - return r; - - r = sd_netlink_message_append_string(message, IFLA_IFNAME, name); - if (r < 0) - return r; - - r = sd_netlink_call(*rtnl, message, 0, NULL); - if (r < 0) - return r; - - return 0; -} - -int rtnl_set_link_properties(sd_netlink **rtnl, int ifindex, const char *alias, - const struct ether_addr *mac, unsigned mtu) { - _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL; - int r; - - assert(rtnl); - assert(ifindex > 0); - - if (!alias && !mac && mtu == 0) - return 0; - - if (!*rtnl) { - r = sd_netlink_open(rtnl); - if (r < 0) - return r; - } - - r = sd_rtnl_message_new_link(*rtnl, &message, RTM_SETLINK, ifindex); - if (r < 0) - return r; - - if (alias) { - r = sd_netlink_message_append_string(message, IFLA_IFALIAS, alias); - if (r < 0) - return r; - } - - if (mac) { - r = sd_netlink_message_append_ether_addr(message, IFLA_ADDRESS, mac); - if (r < 0) - return r; - } - - if (mtu > 0) { - r = sd_netlink_message_append_u32(message, IFLA_MTU, mtu); - if (r < 0) - return r; - } - - r = sd_netlink_call(*rtnl, message, 0, NULL); - if (r < 0) - return r; - - return 0; -} - -int rtnl_message_new_synthetic_error(int error, uint32_t serial, sd_netlink_message **ret) { - struct nlmsgerr *err; - int r; - - assert(error <= 0); - - r = message_new(NULL, ret, NLMSG_ERROR); - if (r < 0) - return r; - - (*ret)->hdr->nlmsg_seq = serial; - - err = NLMSG_DATA((*ret)->hdr); - - err->error = error; - - return 0; -} - -bool rtnl_message_type_is_neigh(uint16_t type) { - switch (type) { - case RTM_NEWNEIGH: - case RTM_GETNEIGH: - case RTM_DELNEIGH: - return true; - default: - return false; - } -} - -bool rtnl_message_type_is_route(uint16_t type) { - switch (type) { - case RTM_NEWROUTE: - case RTM_GETROUTE: - case RTM_DELROUTE: - return true; - default: - return false; - } -} - -bool rtnl_message_type_is_link(uint16_t type) { - switch (type) { - case RTM_NEWLINK: - case RTM_SETLINK: - case RTM_GETLINK: - case RTM_DELLINK: - return true; - default: - return false; - } -} - -bool rtnl_message_type_is_addr(uint16_t type) { - switch (type) { - case RTM_NEWADDR: - case RTM_GETADDR: - case RTM_DELADDR: - return true; - default: - return false; - } -} - -int rtnl_log_parse_error(int r) { - return log_error_errno(r, "Failed to parse netlink message: %m"); -} - -int rtnl_log_create_error(int r) { - return log_error_errno(r, "Failed to create netlink message: %m"); -} diff --git a/src/libsystemd/sd-netlink/netlink-util.h b/src/libsystemd/sd-netlink/netlink-util.h deleted file mode 100644 index f49bf4eaa6..0000000000 --- a/src/libsystemd/sd-netlink/netlink-util.h +++ /dev/null @@ -1,39 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright (C) 2013 Tom Gundersen <teg@jklm.no> - - 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 <http://www.gnu.org/licenses/>. -***/ - -#include "sd-netlink.h" - -#include "util.h" - -int rtnl_message_new_synthetic_error(int error, uint32_t serial, sd_netlink_message **ret); -uint32_t rtnl_message_get_serial(sd_netlink_message *m); -void rtnl_message_seal(sd_netlink_message *m); - -bool rtnl_message_type_is_link(uint16_t type); -bool rtnl_message_type_is_addr(uint16_t type); -bool rtnl_message_type_is_route(uint16_t type); -bool rtnl_message_type_is_neigh(uint16_t type); - -int rtnl_set_link_name(sd_netlink **rtnl, int ifindex, const char *name); -int rtnl_set_link_properties(sd_netlink **rtnl, int ifindex, const char *alias, const struct ether_addr *mac, unsigned mtu); - -int rtnl_log_parse_error(int r); -int rtnl_log_create_error(int r); diff --git a/src/libsystemd/sd-netlink/rtnl-message.c b/src/libsystemd/sd-netlink/rtnl-message.c deleted file mode 100644 index 090552f576..0000000000 --- a/src/libsystemd/sd-netlink/rtnl-message.c +++ /dev/null @@ -1,675 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Tom Gundersen <teg@jklm.no> - - 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 <http://www.gnu.org/licenses/>. -***/ - -#include <netinet/in.h> -#include <stdbool.h> -#include <unistd.h> - -#include "sd-netlink.h" - -#include "formats-util.h" -#include "missing.h" -#include "netlink-internal.h" -#include "netlink-types.h" -#include "netlink-util.h" -#include "refcnt.h" -#include "socket-util.h" -#include "util.h" - -int sd_rtnl_message_route_set_dst_prefixlen(sd_netlink_message *m, unsigned char prefixlen) { - struct rtmsg *rtm; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); - - rtm = NLMSG_DATA(m->hdr); - - if ((rtm->rtm_family == AF_INET && prefixlen > 32) || - (rtm->rtm_family == AF_INET6 && prefixlen > 128)) - return -ERANGE; - - rtm->rtm_dst_len = prefixlen; - - return 0; -} - -int sd_rtnl_message_route_set_src_prefixlen(sd_netlink_message *m, unsigned char prefixlen) { - struct rtmsg *rtm; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); - - rtm = NLMSG_DATA(m->hdr); - - if ((rtm->rtm_family == AF_INET && prefixlen > 32) || - (rtm->rtm_family == AF_INET6 && prefixlen > 128)) - return -ERANGE; - - rtm->rtm_src_len = prefixlen; - - return 0; -} - -int sd_rtnl_message_route_set_scope(sd_netlink_message *m, unsigned char scope) { - struct rtmsg *rtm; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); - - rtm = NLMSG_DATA(m->hdr); - - rtm->rtm_scope = scope; - - return 0; -} - -int sd_rtnl_message_route_set_flags(sd_netlink_message *m, unsigned flags) { - struct rtmsg *rtm; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); - - rtm = NLMSG_DATA(m->hdr); - - rtm->rtm_flags = flags; - - return 0; -} - -int sd_rtnl_message_route_get_flags(sd_netlink_message *m, unsigned *flags) { - struct rtmsg *rtm; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); - assert_return(flags, -EINVAL); - - rtm = NLMSG_DATA(m->hdr); - - *flags = rtm->rtm_flags; - - return 0; -} - -int sd_rtnl_message_route_get_family(sd_netlink_message *m, int *family) { - struct rtmsg *rtm; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); - assert_return(family, -EINVAL); - - rtm = NLMSG_DATA(m->hdr); - - *family = rtm->rtm_family; - - return 0; -} - -int sd_rtnl_message_route_get_protocol(sd_netlink_message *m, unsigned char *protocol) { - struct rtmsg *rtm; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); - assert_return(protocol, -EINVAL); - - rtm = NLMSG_DATA(m->hdr); - - *protocol = rtm->rtm_protocol; - - return 0; -} - -int sd_rtnl_message_route_get_scope(sd_netlink_message *m, unsigned char *scope) { - struct rtmsg *rtm; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); - assert_return(scope, -EINVAL); - - rtm = NLMSG_DATA(m->hdr); - - *scope = rtm->rtm_scope; - - return 0; -} - -int sd_rtnl_message_route_get_tos(sd_netlink_message *m, unsigned char *tos) { - struct rtmsg *rtm; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); - assert_return(tos, -EINVAL); - - rtm = NLMSG_DATA(m->hdr); - - *tos = rtm->rtm_tos; - - return 0; -} - -int sd_rtnl_message_route_get_table(sd_netlink_message *m, unsigned char *table) { - struct rtmsg *rtm; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); - assert_return(table, -EINVAL); - - rtm = NLMSG_DATA(m->hdr); - - *table = rtm->rtm_table; - - return 0; -} - -int sd_rtnl_message_route_get_dst_prefixlen(sd_netlink_message *m, unsigned char *dst_len) { - struct rtmsg *rtm; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); - assert_return(dst_len, -EINVAL); - - rtm = NLMSG_DATA(m->hdr); - - *dst_len = rtm->rtm_dst_len; - - return 0; -} - -int sd_rtnl_message_route_get_src_prefixlen(sd_netlink_message *m, unsigned char *src_len) { - struct rtmsg *rtm; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL); - assert_return(src_len, -EINVAL); - - rtm = NLMSG_DATA(m->hdr); - - *src_len = rtm->rtm_src_len; - - return 0; -} - -int sd_rtnl_message_new_route(sd_netlink *rtnl, sd_netlink_message **ret, - uint16_t nlmsg_type, int rtm_family, - unsigned char rtm_protocol) { - struct rtmsg *rtm; - int r; - - assert_return(rtnl_message_type_is_route(nlmsg_type), -EINVAL); - assert_return((nlmsg_type == RTM_GETROUTE && rtm_family == AF_UNSPEC) || - rtm_family == AF_INET || rtm_family == AF_INET6, -EINVAL); - assert_return(ret, -EINVAL); - - r = message_new(rtnl, ret, nlmsg_type); - if (r < 0) - return r; - - if (nlmsg_type == RTM_NEWROUTE) - (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_APPEND; - - rtm = NLMSG_DATA((*ret)->hdr); - - rtm->rtm_family = rtm_family; - rtm->rtm_scope = RT_SCOPE_UNIVERSE; - rtm->rtm_type = RTN_UNICAST; - rtm->rtm_table = RT_TABLE_MAIN; - rtm->rtm_protocol = rtm_protocol; - - return 0; -} - -int sd_rtnl_message_neigh_set_flags(sd_netlink_message *m, uint8_t flags) { - struct ndmsg *ndm; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL); - - ndm = NLMSG_DATA(m->hdr); - ndm->ndm_flags |= flags; - - return 0; -} - -int sd_rtnl_message_neigh_set_state(sd_netlink_message *m, uint16_t state) { - struct ndmsg *ndm; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL); - - ndm = NLMSG_DATA(m->hdr); - ndm->ndm_state |= state; - - return 0; -} - -int sd_rtnl_message_neigh_get_flags(sd_netlink_message *m, uint8_t *flags) { - struct ndmsg *ndm; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL); - - ndm = NLMSG_DATA(m->hdr); - *flags = ndm->ndm_flags; - - return 0; -} - -int sd_rtnl_message_neigh_get_state(sd_netlink_message *m, uint16_t *state) { - struct ndmsg *ndm; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL); - - ndm = NLMSG_DATA(m->hdr); - *state = ndm->ndm_state; - - return 0; -} - -int sd_rtnl_message_neigh_get_family(sd_netlink_message *m, int *family) { - struct ndmsg *ndm; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL); - assert_return(family, -EINVAL); - - ndm = NLMSG_DATA(m->hdr); - - *family = ndm->ndm_family; - - return 0; -} - -int sd_rtnl_message_neigh_get_ifindex(sd_netlink_message *m, int *index) { - struct ndmsg *ndm; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_neigh(m->hdr->nlmsg_type), -EINVAL); - assert_return(index, -EINVAL); - - ndm = NLMSG_DATA(m->hdr); - - *index = ndm->ndm_ifindex; - - return 0; -} - -int sd_rtnl_message_new_neigh(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t nlmsg_type, int index, int ndm_family) { - struct ndmsg *ndm; - int r; - - assert_return(rtnl_message_type_is_neigh(nlmsg_type), -EINVAL); - assert_return(ndm_family == AF_INET || - ndm_family == AF_INET6 || - ndm_family == PF_BRIDGE, -EINVAL); - assert_return(ret, -EINVAL); - - r = message_new(rtnl, ret, nlmsg_type); - if (r < 0) - return r; - - if (nlmsg_type == RTM_NEWNEIGH) - (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_APPEND; - - ndm = NLMSG_DATA((*ret)->hdr); - - ndm->ndm_family = ndm_family; - ndm->ndm_ifindex = index; - - return 0; -} - -int sd_rtnl_message_link_set_flags(sd_netlink_message *m, unsigned flags, unsigned change) { - struct ifinfomsg *ifi; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL); - assert_return(change, -EINVAL); - - ifi = NLMSG_DATA(m->hdr); - - ifi->ifi_flags = flags; - ifi->ifi_change = change; - - return 0; -} - -int sd_rtnl_message_link_set_type(sd_netlink_message *m, unsigned type) { - struct ifinfomsg *ifi; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL); - - ifi = NLMSG_DATA(m->hdr); - - ifi->ifi_type = type; - - return 0; -} - -int sd_rtnl_message_link_set_family(sd_netlink_message *m, unsigned family) { - struct ifinfomsg *ifi; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL); - - ifi = NLMSG_DATA(m->hdr); - - ifi->ifi_family = family; - - return 0; -} - -int sd_rtnl_message_new_link(sd_netlink *rtnl, sd_netlink_message **ret, - uint16_t nlmsg_type, int index) { - struct ifinfomsg *ifi; - int r; - - assert_return(rtnl_message_type_is_link(nlmsg_type), -EINVAL); - assert_return(nlmsg_type != RTM_DELLINK || index > 0, -EINVAL); - assert_return(ret, -EINVAL); - - r = message_new(rtnl, ret, nlmsg_type); - if (r < 0) - return r; - - if (nlmsg_type == RTM_NEWLINK) - (*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_EXCL; - - ifi = NLMSG_DATA((*ret)->hdr); - - ifi->ifi_family = AF_UNSPEC; - ifi->ifi_index = index; - - return 0; -} - -int sd_rtnl_message_addr_set_prefixlen(sd_netlink_message *m, unsigned char prefixlen) { - struct ifaddrmsg *ifa; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); - - ifa = NLMSG_DATA(m->hdr); - - if ((ifa->ifa_family == AF_INET && prefixlen > 32) || - (ifa->ifa_family == AF_INET6 && prefixlen > 128)) - return -ERANGE; - - ifa->ifa_prefixlen = prefixlen; - - return 0; -} - -int sd_rtnl_message_addr_set_flags(sd_netlink_message *m, unsigned char flags) { - struct ifaddrmsg *ifa; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); - - ifa = NLMSG_DATA(m->hdr); - - ifa->ifa_flags = flags; - - return 0; -} - -int sd_rtnl_message_addr_set_scope(sd_netlink_message *m, unsigned char scope) { - struct ifaddrmsg *ifa; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); - - ifa = NLMSG_DATA(m->hdr); - - ifa->ifa_scope = scope; - - return 0; -} - -int sd_rtnl_message_addr_get_family(sd_netlink_message *m, int *family) { - struct ifaddrmsg *ifa; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); - assert_return(family, -EINVAL); - - ifa = NLMSG_DATA(m->hdr); - - *family = ifa->ifa_family; - - return 0; -} - -int sd_rtnl_message_addr_get_prefixlen(sd_netlink_message *m, unsigned char *prefixlen) { - struct ifaddrmsg *ifa; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); - assert_return(prefixlen, -EINVAL); - - ifa = NLMSG_DATA(m->hdr); - - *prefixlen = ifa->ifa_prefixlen; - - return 0; -} - -int sd_rtnl_message_addr_get_scope(sd_netlink_message *m, unsigned char *scope) { - struct ifaddrmsg *ifa; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); - assert_return(scope, -EINVAL); - - ifa = NLMSG_DATA(m->hdr); - - *scope = ifa->ifa_scope; - - return 0; -} - -int sd_rtnl_message_addr_get_flags(sd_netlink_message *m, unsigned char *flags) { - struct ifaddrmsg *ifa; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); - assert_return(flags, -EINVAL); - - ifa = NLMSG_DATA(m->hdr); - - *flags = ifa->ifa_flags; - - return 0; -} - -int sd_rtnl_message_addr_get_ifindex(sd_netlink_message *m, int *ifindex) { - struct ifaddrmsg *ifa; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL); - assert_return(ifindex, -EINVAL); - - ifa = NLMSG_DATA(m->hdr); - - *ifindex = ifa->ifa_index; - - return 0; -} - -int sd_rtnl_message_new_addr(sd_netlink *rtnl, sd_netlink_message **ret, - uint16_t nlmsg_type, int index, - int family) { - struct ifaddrmsg *ifa; - int r; - - assert_return(rtnl_message_type_is_addr(nlmsg_type), -EINVAL); - assert_return((nlmsg_type == RTM_GETADDR && index == 0) || - index > 0, -EINVAL); - assert_return((nlmsg_type == RTM_GETADDR && family == AF_UNSPEC) || - family == AF_INET || family == AF_INET6, -EINVAL); - assert_return(ret, -EINVAL); - - r = message_new(rtnl, ret, nlmsg_type); - if (r < 0) - return r; - - if (nlmsg_type == RTM_GETADDR) - (*ret)->hdr->nlmsg_flags |= NLM_F_DUMP; - - ifa = NLMSG_DATA((*ret)->hdr); - - ifa->ifa_index = index; - ifa->ifa_family = family; - if (family == AF_INET) - ifa->ifa_prefixlen = 32; - else if (family == AF_INET6) - ifa->ifa_prefixlen = 128; - - return 0; -} - -int sd_rtnl_message_new_addr_update(sd_netlink *rtnl, sd_netlink_message **ret, - int index, int family) { - int r; - - r = sd_rtnl_message_new_addr(rtnl, ret, RTM_NEWADDR, index, family); - if (r < 0) - return r; - - (*ret)->hdr->nlmsg_flags |= NLM_F_REPLACE; - - return 0; -} - -int sd_rtnl_message_link_get_ifindex(sd_netlink_message *m, int *ifindex) { - struct ifinfomsg *ifi; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL); - assert_return(ifindex, -EINVAL); - - ifi = NLMSG_DATA(m->hdr); - - *ifindex = ifi->ifi_index; - - return 0; -} - -int sd_rtnl_message_link_get_flags(sd_netlink_message *m, unsigned *flags) { - struct ifinfomsg *ifi; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL); - assert_return(flags, -EINVAL); - - ifi = NLMSG_DATA(m->hdr); - - *flags = ifi->ifi_flags; - - return 0; -} - -int sd_rtnl_message_link_get_type(sd_netlink_message *m, unsigned *type) { - struct ifinfomsg *ifi; - - assert_return(m, -EINVAL); - assert_return(m->hdr, -EINVAL); - assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL); - assert_return(type, -EINVAL); - - ifi = NLMSG_DATA(m->hdr); - - *type = ifi->ifi_type; - - return 0; -} - -int sd_rtnl_message_get_family(sd_netlink_message *m, int *family) { - assert_return(m, -EINVAL); - assert_return(family, -EINVAL); - - assert(m->hdr); - - if (rtnl_message_type_is_link(m->hdr->nlmsg_type)) { - struct ifinfomsg *ifi; - - ifi = NLMSG_DATA(m->hdr); - - *family = ifi->ifi_family; - - return 0; - } else if (rtnl_message_type_is_route(m->hdr->nlmsg_type)) { - struct rtmsg *rtm; - - rtm = NLMSG_DATA(m->hdr); - - *family = rtm->rtm_family; - - return 0; - } else if (rtnl_message_type_is_neigh(m->hdr->nlmsg_type)) { - struct ndmsg *ndm; - - ndm = NLMSG_DATA(m->hdr); - - *family = ndm->ndm_family; - - return 0; - } else if (rtnl_message_type_is_addr(m->hdr->nlmsg_type)) { - struct ifaddrmsg *ifa; - - ifa = NLMSG_DATA(m->hdr); - - *family = ifa->ifa_family; - - return 0; - } - - return -EOPNOTSUPP; -} diff --git a/src/libsystemd/sd-netlink/sd-netlink.c b/src/libsystemd/sd-netlink/sd-netlink.c deleted file mode 100644 index 4833815b43..0000000000 --- a/src/libsystemd/sd-netlink/sd-netlink.c +++ /dev/null @@ -1,954 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Tom Gundersen <teg@jklm.no> - - 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 <http://www.gnu.org/licenses/>. -***/ - -#include <poll.h> -#include <sys/socket.h> - -#include "sd-netlink.h" - -#include "alloc-util.h" -#include "fd-util.h" -#include "hashmap.h" -#include "macro.h" -#include "missing.h" -#include "netlink-internal.h" -#include "netlink-util.h" -#include "socket-util.h" -#include "util.h" - -static int sd_netlink_new(sd_netlink **ret) { - _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL; - - assert_return(ret, -EINVAL); - - rtnl = new0(sd_netlink, 1); - if (!rtnl) - return -ENOMEM; - - rtnl->n_ref = REFCNT_INIT; - rtnl->fd = -1; - rtnl->sockaddr.nl.nl_family = AF_NETLINK; - rtnl->original_pid = getpid(); - - LIST_HEAD_INIT(rtnl->match_callbacks); - - /* We guarantee that the read buffer has at least space for - * a message header */ - if (!greedy_realloc((void**)&rtnl->rbuffer, &rtnl->rbuffer_allocated, - sizeof(struct nlmsghdr), sizeof(uint8_t))) - return -ENOMEM; - - /* Change notification responses have sequence 0, so we must - * start our request sequence numbers at 1, or we may confuse our - * responses with notifications from the kernel */ - rtnl->serial = 1; - - *ret = rtnl; - rtnl = NULL; - - return 0; -} - -int sd_netlink_new_from_netlink(sd_netlink **ret, int fd) { - _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL; - socklen_t addrlen; - int r; - - assert_return(ret, -EINVAL); - - r = sd_netlink_new(&rtnl); - if (r < 0) - return r; - - addrlen = sizeof(rtnl->sockaddr); - - r = getsockname(fd, &rtnl->sockaddr.sa, &addrlen); - if (r < 0) - return -errno; - - if (rtnl->sockaddr.nl.nl_family != AF_NETLINK) - return -EINVAL; - - rtnl->fd = fd; - - *ret = rtnl; - rtnl = NULL; - - return 0; -} - -static bool rtnl_pid_changed(sd_netlink *rtnl) { - assert(rtnl); - - /* We don't support people creating an rtnl connection and - * keeping it around over a fork(). Let's complain. */ - - return rtnl->original_pid != getpid(); -} - -int sd_netlink_open_fd(sd_netlink **ret, int fd) { - _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL; - int r; - - assert_return(ret, -EINVAL); - assert_return(fd >= 0, -EBADF); - - r = sd_netlink_new(&rtnl); - if (r < 0) - return r; - - rtnl->fd = fd; - - r = socket_bind(rtnl); - if (r < 0) { - rtnl->fd = -1; /* on failure, the caller remains owner of the fd, hence don't close it here */ - return r; - } - - *ret = rtnl; - rtnl = NULL; - - return 0; -} - -int sd_netlink_open(sd_netlink **ret) { - _cleanup_close_ int fd = -1; - int r; - - fd = socket_open(NETLINK_ROUTE); - if (fd < 0) - return fd; - - r = sd_netlink_open_fd(ret, fd); - if (r < 0) - return r; - - fd = -1; - - return 0; -} - -int sd_netlink_inc_rcvbuf(const sd_netlink *const rtnl, const int size) { - return fd_inc_rcvbuf(rtnl->fd, size); -} - -sd_netlink *sd_netlink_ref(sd_netlink *rtnl) { - assert_return(rtnl, NULL); - assert_return(!rtnl_pid_changed(rtnl), NULL); - - if (rtnl) - assert_se(REFCNT_INC(rtnl->n_ref) >= 2); - - return rtnl; -} - -sd_netlink *sd_netlink_unref(sd_netlink *rtnl) { - if (!rtnl) - return NULL; - - assert_return(!rtnl_pid_changed(rtnl), NULL); - - if (REFCNT_DEC(rtnl->n_ref) == 0) { - struct match_callback *f; - unsigned i; - - for (i = 0; i < rtnl->rqueue_size; i++) - sd_netlink_message_unref(rtnl->rqueue[i]); - free(rtnl->rqueue); - - for (i = 0; i < rtnl->rqueue_partial_size; i++) - sd_netlink_message_unref(rtnl->rqueue_partial[i]); - free(rtnl->rqueue_partial); - - free(rtnl->rbuffer); - - hashmap_free_free(rtnl->reply_callbacks); - prioq_free(rtnl->reply_callbacks_prioq); - - sd_event_source_unref(rtnl->io_event_source); - sd_event_source_unref(rtnl->time_event_source); - sd_event_unref(rtnl->event); - - while ((f = rtnl->match_callbacks)) { - sd_netlink_remove_match(rtnl, f->type, f->callback, f->userdata); - } - - hashmap_free(rtnl->broadcast_group_refs); - - safe_close(rtnl->fd); - free(rtnl); - } - - return NULL; -} - -static void rtnl_seal_message(sd_netlink *rtnl, sd_netlink_message *m) { - assert(rtnl); - assert(!rtnl_pid_changed(rtnl)); - assert(m); - assert(m->hdr); - - /* don't use seq == 0, as that is used for broadcasts, so we - would get confused by replies to such messages */ - m->hdr->nlmsg_seq = rtnl->serial++ ? : rtnl->serial++; - - rtnl_message_seal(m); - - return; -} - -int sd_netlink_send(sd_netlink *nl, - sd_netlink_message *message, - uint32_t *serial) { - int r; - - assert_return(nl, -EINVAL); - assert_return(!rtnl_pid_changed(nl), -ECHILD); - assert_return(message, -EINVAL); - assert_return(!message->sealed, -EPERM); - - rtnl_seal_message(nl, message); - - r = socket_write_message(nl, message); - if (r < 0) - return r; - - if (serial) - *serial = rtnl_message_get_serial(message); - - return 1; -} - -int rtnl_rqueue_make_room(sd_netlink *rtnl) { - assert(rtnl); - - if (rtnl->rqueue_size >= RTNL_RQUEUE_MAX) { - log_debug("rtnl: exhausted the read queue size (%d)", RTNL_RQUEUE_MAX); - return -ENOBUFS; - } - - if (!GREEDY_REALLOC(rtnl->rqueue, rtnl->rqueue_allocated, rtnl->rqueue_size + 1)) - return -ENOMEM; - - return 0; -} - -int rtnl_rqueue_partial_make_room(sd_netlink *rtnl) { - assert(rtnl); - - if (rtnl->rqueue_partial_size >= RTNL_RQUEUE_MAX) { - log_debug("rtnl: exhausted the partial read queue size (%d)", RTNL_RQUEUE_MAX); - return -ENOBUFS; - } - - if (!GREEDY_REALLOC(rtnl->rqueue_partial, rtnl->rqueue_partial_allocated, - rtnl->rqueue_partial_size + 1)) - return -ENOMEM; - - return 0; -} - -static int dispatch_rqueue(sd_netlink *rtnl, sd_netlink_message **message) { - int r; - - assert(rtnl); - assert(message); - - if (rtnl->rqueue_size <= 0) { - /* Try to read a new message */ - r = socket_read_message(rtnl); - if (r <= 0) - return r; - } - - /* Dispatch a queued message */ - *message = rtnl->rqueue[0]; - rtnl->rqueue_size --; - memmove(rtnl->rqueue, rtnl->rqueue + 1, sizeof(sd_netlink_message*) * rtnl->rqueue_size); - - return 1; -} - -static int process_timeout(sd_netlink *rtnl) { - _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL; - struct reply_callback *c; - usec_t n; - int r; - - assert(rtnl); - - c = prioq_peek(rtnl->reply_callbacks_prioq); - if (!c) - return 0; - - n = now(CLOCK_MONOTONIC); - if (c->timeout > n) - return 0; - - r = rtnl_message_new_synthetic_error(-ETIMEDOUT, c->serial, &m); - if (r < 0) - return r; - - assert_se(prioq_pop(rtnl->reply_callbacks_prioq) == c); - hashmap_remove(rtnl->reply_callbacks, &c->serial); - - r = c->callback(rtnl, m, c->userdata); - if (r < 0) - log_debug_errno(r, "sd-netlink: timedout callback failed: %m"); - - free(c); - - return 1; -} - -static int process_reply(sd_netlink *rtnl, sd_netlink_message *m) { - _cleanup_free_ struct reply_callback *c = NULL; - uint64_t serial; - uint16_t type; - int r; - - assert(rtnl); - assert(m); - - serial = rtnl_message_get_serial(m); - c = hashmap_remove(rtnl->reply_callbacks, &serial); - if (!c) - return 0; - - if (c->timeout != 0) - prioq_remove(rtnl->reply_callbacks_prioq, c, &c->prioq_idx); - - r = sd_netlink_message_get_type(m, &type); - if (r < 0) - return 0; - - if (type == NLMSG_DONE) - m = NULL; - - r = c->callback(rtnl, m, c->userdata); - if (r < 0) - log_debug_errno(r, "sd-netlink: callback failed: %m"); - - return 1; -} - -static int process_match(sd_netlink *rtnl, sd_netlink_message *m) { - struct match_callback *c; - uint16_t type; - int r; - - assert(rtnl); - assert(m); - - r = sd_netlink_message_get_type(m, &type); - if (r < 0) - return r; - - LIST_FOREACH(match_callbacks, c, rtnl->match_callbacks) { - if (type == c->type) { - r = c->callback(rtnl, m, c->userdata); - if (r != 0) { - if (r < 0) - log_debug_errno(r, "sd-netlink: match callback failed: %m"); - - break; - } - } - } - - return 1; -} - -static int process_running(sd_netlink *rtnl, sd_netlink_message **ret) { - _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL; - int r; - - assert(rtnl); - - r = process_timeout(rtnl); - if (r != 0) - goto null_message; - - r = dispatch_rqueue(rtnl, &m); - if (r < 0) - return r; - if (!m) - goto null_message; - - if (sd_netlink_message_is_broadcast(m)) { - r = process_match(rtnl, m); - if (r != 0) - goto null_message; - } else { - r = process_reply(rtnl, m); - if (r != 0) - goto null_message; - } - - if (ret) { - *ret = m; - m = NULL; - - return 1; - } - - return 1; - -null_message: - if (r >= 0 && ret) - *ret = NULL; - - return r; -} - -int sd_netlink_process(sd_netlink *rtnl, sd_netlink_message **ret) { - NETLINK_DONT_DESTROY(rtnl); - int r; - - assert_return(rtnl, -EINVAL); - assert_return(!rtnl_pid_changed(rtnl), -ECHILD); - assert_return(!rtnl->processing, -EBUSY); - - rtnl->processing = true; - r = process_running(rtnl, ret); - rtnl->processing = false; - - return r; -} - -static usec_t calc_elapse(uint64_t usec) { - if (usec == (uint64_t) -1) - return 0; - - if (usec == 0) - usec = RTNL_DEFAULT_TIMEOUT; - - return now(CLOCK_MONOTONIC) + usec; -} - -static int rtnl_poll(sd_netlink *rtnl, bool need_more, uint64_t timeout_usec) { - struct pollfd p[1] = {}; - struct timespec ts; - usec_t m = USEC_INFINITY; - int r, e; - - assert(rtnl); - - e = sd_netlink_get_events(rtnl); - if (e < 0) - return e; - - if (need_more) - /* Caller wants more data, and doesn't care about - * what's been read or any other timeouts. */ - e |= POLLIN; - else { - usec_t until; - /* Caller wants to process if there is something to - * process, but doesn't care otherwise */ - - r = sd_netlink_get_timeout(rtnl, &until); - if (r < 0) - return r; - if (r > 0) { - usec_t nw; - nw = now(CLOCK_MONOTONIC); - m = until > nw ? until - nw : 0; - } - } - - if (timeout_usec != (uint64_t) -1 && (m == (uint64_t) -1 || timeout_usec < m)) - m = timeout_usec; - - p[0].fd = rtnl->fd; - p[0].events = e; - - r = ppoll(p, 1, m == (uint64_t) -1 ? NULL : timespec_store(&ts, m), NULL); - if (r < 0) - return -errno; - - return r > 0 ? 1 : 0; -} - -int sd_netlink_wait(sd_netlink *nl, uint64_t timeout_usec) { - assert_return(nl, -EINVAL); - assert_return(!rtnl_pid_changed(nl), -ECHILD); - - if (nl->rqueue_size > 0) - return 0; - - return rtnl_poll(nl, false, timeout_usec); -} - -static int timeout_compare(const void *a, const void *b) { - const struct reply_callback *x = a, *y = b; - - if (x->timeout != 0 && y->timeout == 0) - return -1; - - if (x->timeout == 0 && y->timeout != 0) - return 1; - - if (x->timeout < y->timeout) - return -1; - - if (x->timeout > y->timeout) - return 1; - - return 0; -} - -int sd_netlink_call_async(sd_netlink *nl, - sd_netlink_message *m, - sd_netlink_message_handler_t callback, - void *userdata, - uint64_t usec, - uint32_t *serial) { - struct reply_callback *c; - uint32_t s; - int r, k; - - assert_return(nl, -EINVAL); - assert_return(m, -EINVAL); - assert_return(callback, -EINVAL); - assert_return(!rtnl_pid_changed(nl), -ECHILD); - - r = hashmap_ensure_allocated(&nl->reply_callbacks, &uint64_hash_ops); - if (r < 0) - return r; - - if (usec != (uint64_t) -1) { - r = prioq_ensure_allocated(&nl->reply_callbacks_prioq, timeout_compare); - if (r < 0) - return r; - } - - c = new0(struct reply_callback, 1); - if (!c) - return -ENOMEM; - - c->callback = callback; - c->userdata = userdata; - c->timeout = calc_elapse(usec); - - k = sd_netlink_send(nl, m, &s); - if (k < 0) { - free(c); - return k; - } - - c->serial = s; - - r = hashmap_put(nl->reply_callbacks, &c->serial, c); - if (r < 0) { - free(c); - return r; - } - - if (c->timeout != 0) { - r = prioq_put(nl->reply_callbacks_prioq, c, &c->prioq_idx); - if (r > 0) { - c->timeout = 0; - sd_netlink_call_async_cancel(nl, c->serial); - return r; - } - } - - if (serial) - *serial = s; - - return k; -} - -int sd_netlink_call_async_cancel(sd_netlink *nl, uint32_t serial) { - struct reply_callback *c; - uint64_t s = serial; - - assert_return(nl, -EINVAL); - assert_return(serial != 0, -EINVAL); - assert_return(!rtnl_pid_changed(nl), -ECHILD); - - c = hashmap_remove(nl->reply_callbacks, &s); - if (!c) - return 0; - - if (c->timeout != 0) - prioq_remove(nl->reply_callbacks_prioq, c, &c->prioq_idx); - - free(c); - return 1; -} - -int sd_netlink_call(sd_netlink *rtnl, - sd_netlink_message *message, - uint64_t usec, - sd_netlink_message **ret) { - usec_t timeout; - uint32_t serial; - int r; - - assert_return(rtnl, -EINVAL); - assert_return(!rtnl_pid_changed(rtnl), -ECHILD); - assert_return(message, -EINVAL); - - r = sd_netlink_send(rtnl, message, &serial); - if (r < 0) - return r; - - timeout = calc_elapse(usec); - - for (;;) { - usec_t left; - unsigned i; - - for (i = 0; i < rtnl->rqueue_size; i++) { - uint32_t received_serial; - - received_serial = rtnl_message_get_serial(rtnl->rqueue[i]); - - if (received_serial == serial) { - _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *incoming = NULL; - uint16_t type; - - incoming = rtnl->rqueue[i]; - - /* found a match, remove from rqueue and return it */ - memmove(rtnl->rqueue + i,rtnl->rqueue + i + 1, - sizeof(sd_netlink_message*) * (rtnl->rqueue_size - i - 1)); - rtnl->rqueue_size--; - - r = sd_netlink_message_get_errno(incoming); - if (r < 0) - return r; - - r = sd_netlink_message_get_type(incoming, &type); - if (r < 0) - return r; - - if (type == NLMSG_DONE) { - *ret = NULL; - return 0; - } - - if (ret) { - *ret = incoming; - incoming = NULL; - } - - return 1; - } - } - - r = socket_read_message(rtnl); - if (r < 0) - return r; - if (r > 0) - /* received message, so try to process straight away */ - continue; - - if (timeout > 0) { - usec_t n; - - n = now(CLOCK_MONOTONIC); - if (n >= timeout) - return -ETIMEDOUT; - - left = timeout - n; - } else - left = (uint64_t) -1; - - r = rtnl_poll(rtnl, true, left); - if (r < 0) - return r; - else if (r == 0) - return -ETIMEDOUT; - } -} - -int sd_netlink_get_events(sd_netlink *rtnl) { - assert_return(rtnl, -EINVAL); - assert_return(!rtnl_pid_changed(rtnl), -ECHILD); - - if (rtnl->rqueue_size == 0) - return POLLIN; - else - return 0; -} - -int sd_netlink_get_timeout(sd_netlink *rtnl, uint64_t *timeout_usec) { - struct reply_callback *c; - - assert_return(rtnl, -EINVAL); - assert_return(timeout_usec, -EINVAL); - assert_return(!rtnl_pid_changed(rtnl), -ECHILD); - - if (rtnl->rqueue_size > 0) { - *timeout_usec = 0; - return 1; - } - - c = prioq_peek(rtnl->reply_callbacks_prioq); - if (!c) { - *timeout_usec = (uint64_t) -1; - return 0; - } - - *timeout_usec = c->timeout; - - return 1; -} - -static int io_callback(sd_event_source *s, int fd, uint32_t revents, void *userdata) { - sd_netlink *rtnl = userdata; - int r; - - assert(rtnl); - - r = sd_netlink_process(rtnl, NULL); - if (r < 0) - return r; - - return 1; -} - -static int time_callback(sd_event_source *s, uint64_t usec, void *userdata) { - sd_netlink *rtnl = userdata; - int r; - - assert(rtnl); - - r = sd_netlink_process(rtnl, NULL); - if (r < 0) - return r; - - return 1; -} - -static int prepare_callback(sd_event_source *s, void *userdata) { - sd_netlink *rtnl = userdata; - int r, e; - usec_t until; - - assert(s); - assert(rtnl); - - e = sd_netlink_get_events(rtnl); - if (e < 0) - return e; - - r = sd_event_source_set_io_events(rtnl->io_event_source, e); - if (r < 0) - return r; - - r = sd_netlink_get_timeout(rtnl, &until); - if (r < 0) - return r; - if (r > 0) { - int j; - - j = sd_event_source_set_time(rtnl->time_event_source, until); - if (j < 0) - return j; - } - - r = sd_event_source_set_enabled(rtnl->time_event_source, r > 0); - if (r < 0) - return r; - - return 1; -} - -int sd_netlink_attach_event(sd_netlink *rtnl, sd_event *event, int priority) { - int r; - - assert_return(rtnl, -EINVAL); - assert_return(!rtnl->event, -EBUSY); - - assert(!rtnl->io_event_source); - assert(!rtnl->time_event_source); - - if (event) - rtnl->event = sd_event_ref(event); - else { - r = sd_event_default(&rtnl->event); - if (r < 0) - return r; - } - - r = sd_event_add_io(rtnl->event, &rtnl->io_event_source, rtnl->fd, 0, io_callback, rtnl); - if (r < 0) - goto fail; - - r = sd_event_source_set_priority(rtnl->io_event_source, priority); - if (r < 0) - goto fail; - - r = sd_event_source_set_description(rtnl->io_event_source, "rtnl-receive-message"); - if (r < 0) - goto fail; - - r = sd_event_source_set_prepare(rtnl->io_event_source, prepare_callback); - if (r < 0) - goto fail; - - r = sd_event_add_time(rtnl->event, &rtnl->time_event_source, CLOCK_MONOTONIC, 0, 0, time_callback, rtnl); - if (r < 0) - goto fail; - - r = sd_event_source_set_priority(rtnl->time_event_source, priority); - if (r < 0) - goto fail; - - r = sd_event_source_set_description(rtnl->time_event_source, "rtnl-timer"); - if (r < 0) - goto fail; - - return 0; - -fail: - sd_netlink_detach_event(rtnl); - return r; -} - -int sd_netlink_detach_event(sd_netlink *rtnl) { - assert_return(rtnl, -EINVAL); - assert_return(rtnl->event, -ENXIO); - - rtnl->io_event_source = sd_event_source_unref(rtnl->io_event_source); - - rtnl->time_event_source = sd_event_source_unref(rtnl->time_event_source); - - rtnl->event = sd_event_unref(rtnl->event); - - return 0; -} - -int sd_netlink_add_match(sd_netlink *rtnl, - uint16_t type, - sd_netlink_message_handler_t callback, - void *userdata) { - _cleanup_free_ struct match_callback *c = NULL; - int r; - - assert_return(rtnl, -EINVAL); - assert_return(callback, -EINVAL); - assert_return(!rtnl_pid_changed(rtnl), -ECHILD); - - c = new0(struct match_callback, 1); - if (!c) - return -ENOMEM; - - c->callback = callback; - c->type = type; - c->userdata = userdata; - - switch (type) { - case RTM_NEWLINK: - case RTM_DELLINK: - r = socket_broadcast_group_ref(rtnl, RTNLGRP_LINK); - if (r < 0) - return r; - - break; - case RTM_NEWADDR: - case RTM_DELADDR: - r = socket_broadcast_group_ref(rtnl, RTNLGRP_IPV4_IFADDR); - if (r < 0) - return r; - - r = socket_broadcast_group_ref(rtnl, RTNLGRP_IPV6_IFADDR); - if (r < 0) - return r; - - break; - case RTM_NEWROUTE: - case RTM_DELROUTE: - r = socket_broadcast_group_ref(rtnl, RTNLGRP_IPV4_ROUTE); - if (r < 0) - return r; - - r = socket_broadcast_group_ref(rtnl, RTNLGRP_IPV6_ROUTE); - if (r < 0) - return r; - break; - default: - return -EOPNOTSUPP; - } - - LIST_PREPEND(match_callbacks, rtnl->match_callbacks, c); - - c = NULL; - - return 0; -} - -int sd_netlink_remove_match(sd_netlink *rtnl, - uint16_t type, - sd_netlink_message_handler_t callback, - void *userdata) { - struct match_callback *c; - int r; - - assert_return(rtnl, -EINVAL); - assert_return(callback, -EINVAL); - assert_return(!rtnl_pid_changed(rtnl), -ECHILD); - - LIST_FOREACH(match_callbacks, c, rtnl->match_callbacks) - if (c->callback == callback && c->type == type && c->userdata == userdata) { - LIST_REMOVE(match_callbacks, rtnl->match_callbacks, c); - free(c); - - switch (type) { - case RTM_NEWLINK: - case RTM_DELLINK: - r = socket_broadcast_group_unref(rtnl, RTNLGRP_LINK); - if (r < 0) - return r; - - break; - case RTM_NEWADDR: - case RTM_DELADDR: - r = socket_broadcast_group_unref(rtnl, RTNLGRP_IPV4_IFADDR); - if (r < 0) - return r; - - r = socket_broadcast_group_unref(rtnl, RTNLGRP_IPV6_IFADDR); - if (r < 0) - return r; - - break; - case RTM_NEWROUTE: - case RTM_DELROUTE: - r = socket_broadcast_group_unref(rtnl, RTNLGRP_IPV4_ROUTE); - if (r < 0) - return r; - - r = socket_broadcast_group_unref(rtnl, RTNLGRP_IPV6_ROUTE); - if (r < 0) - return r; - break; - default: - return -EOPNOTSUPP; - } - - return 1; - } - - return 0; -} diff --git a/src/libsystemd/sd-netlink/test-local-addresses.c b/src/libsystemd/sd-netlink/test-local-addresses.c deleted file mode 100644 index e0e28cc0cc..0000000000 --- a/src/libsystemd/sd-netlink/test-local-addresses.c +++ /dev/null @@ -1,56 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2014 Lennart Poettering - - 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 <http://www.gnu.org/licenses/>. -***/ - -#include "af-list.h" -#include "alloc-util.h" -#include "in-addr-util.h" -#include "local-addresses.h" - -static void print_local_addresses(struct local_address *a, unsigned n) { - unsigned i; - - for (i = 0; i < n; i++) { - _cleanup_free_ char *b = NULL; - - assert_se(in_addr_to_string(a[i].family, &a[i].address, &b) >= 0); - printf("%s if%i scope=%i metric=%u address=%s\n", af_to_name(a[i].family), a[i].ifindex, a[i].scope, a[i].metric, b); - } -} - -int main(int argc, char *argv[]) { - struct local_address *a; - int n; - - a = NULL; - n = local_addresses(NULL, 0, AF_UNSPEC, &a); - assert_se(n >= 0); - - printf("Local Addresses:\n"); - print_local_addresses(a, (unsigned) n); - a = mfree(a); - - n = local_gateways(NULL, 0, AF_UNSPEC, &a); - assert_se(n >= 0); - - printf("Local Gateways:\n"); - print_local_addresses(a, (unsigned) n); - free(a); - - return 0; -} diff --git a/src/libsystemd/sd-netlink/test-netlink.c b/src/libsystemd/sd-netlink/test-netlink.c deleted file mode 100644 index de5e0ffc8f..0000000000 --- a/src/libsystemd/sd-netlink/test-netlink.c +++ /dev/null @@ -1,440 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Tom Gundersen <teg@jklm.no> - - 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 <http://www.gnu.org/licenses/>. -***/ - -#include <net/if.h> -#include <netinet/ether.h> - -#include "sd-netlink.h" - -#include "ether-addr-util.h" -#include "macro.h" -#include "missing.h" -#include "netlink-util.h" -#include "socket-util.h" -#include "string-util.h" -#include "util.h" - -static void test_message_link_bridge(sd_netlink *rtnl) { - _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL; - uint32_t cost; - - assert_se(sd_rtnl_message_new_link(rtnl, &message, RTM_NEWLINK, 1) >= 0); - assert_se(sd_rtnl_message_link_set_family(message, PF_BRIDGE) >= 0); - assert_se(sd_netlink_message_open_container(message, IFLA_PROTINFO) >= 0); - assert_se(sd_netlink_message_append_u32(message, IFLA_BRPORT_COST, 10) >= 0); - assert_se(sd_netlink_message_close_container(message) >= 0); - - assert_se(sd_netlink_message_rewind(message) >= 0); - - assert_se(sd_netlink_message_enter_container(message, IFLA_PROTINFO) >= 0); - assert_se(sd_netlink_message_read_u32(message, IFLA_BRPORT_COST, &cost) >= 0); - assert_se(cost == 10); - assert_se(sd_netlink_message_exit_container(message) >= 0); -} - -static void test_link_configure(sd_netlink *rtnl, int ifindex) { - _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL; - const char *mac = "98:fe:94:3f:c6:18", *name = "test"; - char buffer[ETHER_ADDR_TO_STRING_MAX]; - unsigned int mtu = 1450, mtu_out; - const char *name_out; - struct ether_addr mac_out; - - /* we'd really like to test NEWLINK, but let's not mess with the running kernel */ - assert_se(sd_rtnl_message_new_link(rtnl, &message, RTM_GETLINK, ifindex) >= 0); - assert_se(sd_netlink_message_append_string(message, IFLA_IFNAME, name) >= 0); - assert_se(sd_netlink_message_append_ether_addr(message, IFLA_ADDRESS, ether_aton(mac)) >= 0); - assert_se(sd_netlink_message_append_u32(message, IFLA_MTU, mtu) >= 0); - - assert_se(sd_netlink_call(rtnl, message, 0, NULL) == 1); - assert_se(sd_netlink_message_rewind(message) >= 0); - - assert_se(sd_netlink_message_read_string(message, IFLA_IFNAME, &name_out) >= 0); - assert_se(streq(name, name_out)); - - assert_se(sd_netlink_message_read_ether_addr(message, IFLA_ADDRESS, &mac_out) >= 0); - assert_se(streq(mac, ether_addr_to_string(&mac_out, buffer))); - - assert_se(sd_netlink_message_read_u32(message, IFLA_MTU, &mtu_out) >= 0); - assert_se(mtu == mtu_out); -} - -static void test_link_get(sd_netlink *rtnl, int ifindex) { - sd_netlink_message *m; - sd_netlink_message *r; - unsigned int mtu = 1500; - const char *str_data; - uint8_t u8_data; - uint32_t u32_data; - struct ether_addr eth_data; - - assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0); - assert_se(m); - - /* u8 test cases */ - assert_se(sd_netlink_message_append_u8(m, IFLA_CARRIER, 0) >= 0); - assert_se(sd_netlink_message_append_u8(m, IFLA_OPERSTATE, 0) >= 0); - assert_se(sd_netlink_message_append_u8(m, IFLA_LINKMODE, 0) >= 0); - - /* u32 test cases */ - assert_se(sd_netlink_message_append_u32(m, IFLA_MTU, mtu) >= 0); - assert_se(sd_netlink_message_append_u32(m, IFLA_GROUP, 0) >= 0); - assert_se(sd_netlink_message_append_u32(m, IFLA_TXQLEN, 0) >= 0); - assert_se(sd_netlink_message_append_u32(m, IFLA_NUM_TX_QUEUES, 0) >= 0); - assert_se(sd_netlink_message_append_u32(m, IFLA_NUM_RX_QUEUES, 0) >= 0); - - assert_se(sd_netlink_call(rtnl, m, -1, &r) == 1); - - assert_se(sd_netlink_message_read_string(r, IFLA_IFNAME, &str_data) == 0); - - assert_se(sd_netlink_message_read_u8(r, IFLA_CARRIER, &u8_data) == 0); - assert_se(sd_netlink_message_read_u8(r, IFLA_OPERSTATE, &u8_data) == 0); - assert_se(sd_netlink_message_read_u8(r, IFLA_LINKMODE, &u8_data) == 0); - - assert_se(sd_netlink_message_read_u32(r, IFLA_MTU, &u32_data) == 0); - assert_se(sd_netlink_message_read_u32(r, IFLA_GROUP, &u32_data) == 0); - assert_se(sd_netlink_message_read_u32(r, IFLA_TXQLEN, &u32_data) == 0); - assert_se(sd_netlink_message_read_u32(r, IFLA_NUM_TX_QUEUES, &u32_data) == 0); - assert_se(sd_netlink_message_read_u32(r, IFLA_NUM_RX_QUEUES, &u32_data) == 0); - - assert_se(sd_netlink_message_read_ether_addr(r, IFLA_ADDRESS, ð_data) == 0); - - assert_se((m = sd_netlink_message_unref(m)) == NULL); - assert_se((r = sd_netlink_message_unref(r)) == NULL); -} - - -static void test_address_get(sd_netlink *rtnl, int ifindex) { - sd_netlink_message *m; - sd_netlink_message *r; - struct in_addr in_data; - struct ifa_cacheinfo cache; - const char *label; - - assert_se(sd_rtnl_message_new_addr(rtnl, &m, RTM_GETADDR, ifindex, AF_INET) >= 0); - assert_se(m); - - assert_se(sd_netlink_call(rtnl, m, -1, &r) == 1); - - assert_se(sd_netlink_message_read_in_addr(r, IFA_LOCAL, &in_data) == 0); - assert_se(sd_netlink_message_read_in_addr(r, IFA_ADDRESS, &in_data) == 0); - assert_se(sd_netlink_message_read_string(r, IFA_LABEL, &label) == 0); - assert_se(sd_netlink_message_read_cache_info(r, IFA_CACHEINFO, &cache) == 0); - - assert_se((m = sd_netlink_message_unref(m)) == NULL); - assert_se((r = sd_netlink_message_unref(r)) == NULL); - -} - -static void test_route(void) { - _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req; - struct in_addr addr, addr_data; - uint32_t index = 2, u32_data; - int r; - - r = sd_rtnl_message_new_route(NULL, &req, RTM_NEWROUTE, AF_INET, RTPROT_STATIC); - if (r < 0) { - log_error_errno(r, "Could not create RTM_NEWROUTE message: %m"); - return; - } - - addr.s_addr = htonl(INADDR_LOOPBACK); - - r = sd_netlink_message_append_in_addr(req, RTA_GATEWAY, &addr); - if (r < 0) { - log_error_errno(r, "Could not append RTA_GATEWAY attribute: %m"); - return; - } - - r = sd_netlink_message_append_u32(req, RTA_OIF, index); - if (r < 0) { - log_error_errno(r, "Could not append RTA_OIF attribute: %m"); - return; - } - - assert_se(sd_netlink_message_rewind(req) >= 0); - - assert_se(sd_netlink_message_read_in_addr(req, RTA_GATEWAY, &addr_data) >= 0); - assert_se(addr_data.s_addr == addr.s_addr); - - assert_se(sd_netlink_message_read_u32(req, RTA_OIF, &u32_data) >= 0); - assert_se(u32_data == index); - - assert_se((req = sd_netlink_message_unref(req)) == NULL); -} - -static void test_multiple(void) { - sd_netlink *rtnl1, *rtnl2; - - assert_se(sd_netlink_open(&rtnl1) >= 0); - assert_se(sd_netlink_open(&rtnl2) >= 0); - - rtnl1 = sd_netlink_unref(rtnl1); - rtnl2 = sd_netlink_unref(rtnl2); -} - -static int link_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { - char *ifname = userdata; - const char *data; - - assert_se(rtnl); - assert_se(m); - - log_info("got link info about %s", ifname); - free(ifname); - - assert_se(sd_netlink_message_read_string(m, IFLA_IFNAME, &data) >= 0); - assert_se(streq(data, "lo")); - - return 1; -} - -static void test_event_loop(int ifindex) { - _cleanup_(sd_event_unrefp) sd_event *event = NULL; - _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL; - _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL; - char *ifname; - - ifname = strdup("lo2"); - assert_se(ifname); - - assert_se(sd_netlink_open(&rtnl) >= 0); - assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0); - - assert_se(sd_netlink_call_async(rtnl, m, &link_handler, ifname, 0, NULL) >= 0); - - assert_se(sd_event_default(&event) >= 0); - - assert_se(sd_netlink_attach_event(rtnl, event, 0) >= 0); - - assert_se(sd_event_run(event, 0) >= 0); - - assert_se(sd_netlink_detach_event(rtnl) >= 0); - - assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL); -} - -static int pipe_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { - int *counter = userdata; - int r; - - (*counter) --; - - r = sd_netlink_message_get_errno(m); - - log_info_errno(r, "%d left in pipe. got reply: %m", *counter); - - assert_se(r >= 0); - - return 1; -} - -static void test_async(int ifindex) { - _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL; - _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL, *r = NULL; - uint32_t serial; - char *ifname; - - ifname = strdup("lo"); - assert_se(ifname); - - assert_se(sd_netlink_open(&rtnl) >= 0); - - assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0); - - assert_se(sd_netlink_call_async(rtnl, m, &link_handler, ifname, 0, &serial) >= 0); - - assert_se(sd_netlink_wait(rtnl, 0) >= 0); - assert_se(sd_netlink_process(rtnl, &r) >= 0); - - assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL); -} - -static void test_pipe(int ifindex) { - _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL; - _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m1 = NULL, *m2 = NULL; - int counter = 0; - - assert_se(sd_netlink_open(&rtnl) >= 0); - - assert_se(sd_rtnl_message_new_link(rtnl, &m1, RTM_GETLINK, ifindex) >= 0); - assert_se(sd_rtnl_message_new_link(rtnl, &m2, RTM_GETLINK, ifindex) >= 0); - - counter ++; - assert_se(sd_netlink_call_async(rtnl, m1, &pipe_handler, &counter, 0, NULL) >= 0); - - counter ++; - assert_se(sd_netlink_call_async(rtnl, m2, &pipe_handler, &counter, 0, NULL) >= 0); - - while (counter > 0) { - assert_se(sd_netlink_wait(rtnl, 0) >= 0); - assert_se(sd_netlink_process(rtnl, NULL) >= 0); - } - - assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL); -} - -static void test_container(void) { - _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL; - uint16_t u16_data; - uint32_t u32_data; - const char *string_data; - - assert_se(sd_rtnl_message_new_link(NULL, &m, RTM_NEWLINK, 0) >= 0); - - assert_se(sd_netlink_message_open_container(m, IFLA_LINKINFO) >= 0); - assert_se(sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, "vlan") >= 0); - assert_se(sd_netlink_message_append_u16(m, IFLA_VLAN_ID, 100) >= 0); - assert_se(sd_netlink_message_close_container(m) >= 0); - assert_se(sd_netlink_message_append_string(m, IFLA_INFO_KIND, "vlan") >= 0); - assert_se(sd_netlink_message_close_container(m) >= 0); - assert_se(sd_netlink_message_close_container(m) == -EINVAL); - - assert_se(sd_netlink_message_rewind(m) >= 0); - - assert_se(sd_netlink_message_enter_container(m, IFLA_LINKINFO) >= 0); - assert_se(sd_netlink_message_read_string(m, IFLA_INFO_KIND, &string_data) >= 0); - assert_se(streq("vlan", string_data)); - - assert_se(sd_netlink_message_enter_container(m, IFLA_INFO_DATA) >= 0); - assert_se(sd_netlink_message_read_u16(m, IFLA_VLAN_ID, &u16_data) >= 0); - assert_se(sd_netlink_message_exit_container(m) >= 0); - - assert_se(sd_netlink_message_read_string(m, IFLA_INFO_KIND, &string_data) >= 0); - assert_se(streq("vlan", string_data)); - assert_se(sd_netlink_message_exit_container(m) >= 0); - - assert_se(sd_netlink_message_read_u32(m, IFLA_LINKINFO, &u32_data) < 0); - - assert_se(sd_netlink_message_exit_container(m) == -EINVAL); -} - -static void test_match(void) { - _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL; - - assert_se(sd_netlink_open(&rtnl) >= 0); - - assert_se(sd_netlink_add_match(rtnl, RTM_NEWLINK, &link_handler, NULL) >= 0); - assert_se(sd_netlink_add_match(rtnl, RTM_NEWLINK, &link_handler, NULL) >= 0); - - assert_se(sd_netlink_remove_match(rtnl, RTM_NEWLINK, &link_handler, NULL) == 1); - assert_se(sd_netlink_remove_match(rtnl, RTM_NEWLINK, &link_handler, NULL) == 1); - assert_se(sd_netlink_remove_match(rtnl, RTM_NEWLINK, &link_handler, NULL) == 0); - - assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL); -} - -static void test_get_addresses(sd_netlink *rtnl) { - _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; - sd_netlink_message *m; - - assert_se(sd_rtnl_message_new_addr(rtnl, &req, RTM_GETADDR, 0, AF_UNSPEC) >= 0); - - assert_se(sd_netlink_call(rtnl, req, 0, &reply) >= 0); - - for (m = reply; m; m = sd_netlink_message_next(m)) { - uint16_t type; - unsigned char scope, flags; - int family, ifindex; - - assert_se(sd_netlink_message_get_type(m, &type) >= 0); - assert_se(type == RTM_NEWADDR); - - assert_se(sd_rtnl_message_addr_get_ifindex(m, &ifindex) >= 0); - assert_se(sd_rtnl_message_addr_get_family(m, &family) >= 0); - assert_se(sd_rtnl_message_addr_get_scope(m, &scope) >= 0); - assert_se(sd_rtnl_message_addr_get_flags(m, &flags) >= 0); - - assert_se(ifindex > 0); - assert_se(family == AF_INET || family == AF_INET6); - - log_info("got IPv%u address on ifindex %i", family == AF_INET ? 4: 6, ifindex); - } -} - -static void test_message(void) { - _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL; - - assert_se(rtnl_message_new_synthetic_error(-ETIMEDOUT, 1, &m) >= 0); - assert_se(sd_netlink_message_get_errno(m) == -ETIMEDOUT); -} - -int main(void) { - sd_netlink *rtnl; - sd_netlink_message *m; - sd_netlink_message *r; - const char *string_data; - int if_loopback; - uint16_t type; - - test_message(); - - test_match(); - - test_multiple(); - - test_route(); - - test_container(); - - assert_se(sd_netlink_open(&rtnl) >= 0); - assert_se(rtnl); - - if_loopback = (int) if_nametoindex("lo"); - assert_se(if_loopback > 0); - - test_async(if_loopback); - - test_pipe(if_loopback); - - test_event_loop(if_loopback); - - test_link_configure(rtnl, if_loopback); - - test_get_addresses(rtnl); - - test_message_link_bridge(rtnl); - - assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, if_loopback) >= 0); - assert_se(m); - - assert_se(sd_netlink_message_get_type(m, &type) >= 0); - assert_se(type == RTM_GETLINK); - - assert_se(sd_netlink_message_read_string(m, IFLA_IFNAME, &string_data) == -EPERM); - - assert_se(sd_netlink_call(rtnl, m, 0, &r) == 1); - assert_se(sd_netlink_message_get_type(r, &type) >= 0); - assert_se(type == RTM_NEWLINK); - - assert_se((r = sd_netlink_message_unref(r)) == NULL); - - assert_se(sd_netlink_call(rtnl, m, -1, &r) == -EPERM); - assert_se((m = sd_netlink_message_unref(m)) == NULL); - assert_se((r = sd_netlink_message_unref(r)) == NULL); - - test_link_get(rtnl, if_loopback); - test_address_get(rtnl, if_loopback); - - assert_se((m = sd_netlink_message_unref(m)) == NULL); - assert_se((r = sd_netlink_message_unref(r)) == NULL); - assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL); - - return EXIT_SUCCESS; -} |