projects / thirdparty / systemd.git / blame
| Commit | Line | Data |
|---|---|---|
| ee38400b YW |
1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
| 2 | ||
| 3 | #include <errno.h> | |
| 4 | ||
| 5 | #include "sd-netlink.h" | |
| 6 | ||
| 7 | #include "alloc-util.h" | |
| 8 | #include "netlink-internal.h" | |
| 9 | #include "netlink-slot.h" | |
| 10 | ||
| 11 | sd_netlink_slot *netlink_slot_allocate( | |
| 12 | sd_netlink *nl, | |
| 13 | bool floating, | |
| 14 | NetlinkSlotType type, | |
| 15 | size_t extra, | |
| 16 | sd_netlink_destroy_t destroy_callback, | |
| 17 | void *userdata) { | |
| 18 | ||
| 19 | sd_netlink_slot *slot; | |
| 20 | ||
| 21 | assert(nl); | |
| 22 | ||
| 23 | slot = malloc0(offsetof(sd_netlink_slot, reply_callback) + extra); | |
| 24 | if (!slot) | |
| 25 | return NULL; | |
| 26 | ||
| 27 | slot->n_ref = 1; | |
| 28 | slot->netlink = nl; | |
| 29 | slot->userdata = userdata; | |
| 30 | slot->destroy_callback = destroy_callback; | |
| 31 | slot->type = type; | |
| 32 | slot->floating = floating; | |
| 33 | ||
| 34 | if (!floating) | |
| 35 | sd_netlink_ref(nl); | |
| 36 | ||
| 37 | LIST_PREPEND(slots, nl->slots, slot); | |
| 38 | ||
| 39 | return slot; | |
| 40 | } | |
| 41 | ||
| 42 | void netlink_slot_disconnect(sd_netlink_slot *slot, bool unref) { | |
| 43 | sd_netlink *nl; | |
| 44 | ||
| 45 | assert(slot); | |
| 46 | ||
| 47 | nl = slot->netlink; | |
| 48 | if (!nl) | |
| 49 | return; | |
| 50 | ||
| 51 | switch (slot->type) { | |
| 52 | ||
| 53 | case NETLINK_REPLY_CALLBACK: | |
| 54 | (void) hashmap_remove(nl->reply_callbacks, &slot->reply_callback.serial); | |
| 55 | ||
| 56 | if (slot->reply_callback.timeout != 0) | |
| 57 | prioq_remove(nl->reply_callbacks_prioq, &slot->reply_callback, &slot->reply_callback.prioq_idx); | |
| 58 | ||
| 59 | break; | |
| 60 | case NETLINK_MATCH_CALLBACK: | |
| 61 | LIST_REMOVE(match_callbacks, nl->match_callbacks, &slot->match_callback); | |
| 62 | ||
| 63 | switch (slot->match_callback.type) { | |
| 64 | case RTM_NEWLINK: | |
| 65 | case RTM_DELLINK: | |
| 66 | (void) socket_broadcast_group_unref(nl, RTNLGRP_LINK); | |
| 67 | ||
| 68 | break; | |
| 69 | case RTM_NEWADDR: | |
| 70 | case RTM_DELADDR: | |
| 71 | (void) socket_broadcast_group_unref(nl, RTNLGRP_IPV4_IFADDR); | |
| 72 | (void) socket_broadcast_group_unref(nl, RTNLGRP_IPV6_IFADDR); | |
| 73 | ||
| 74 | break; | |
| 75 | case RTM_NEWROUTE: | |
| 76 | case RTM_DELROUTE: | |
| 77 | (void) socket_broadcast_group_unref(nl, RTNLGRP_IPV4_ROUTE); | |
| 78 | (void) socket_broadcast_group_unref(nl, RTNLGRP_IPV6_ROUTE); | |
| 79 | ||
| 80 | break; | |
| 81 | } | |
| 82 | ||
| 83 | break; | |
| 84 | default: | |
| 85 | assert_not_reached("Wut? Unknown slot type?"); | |
| 86 | } | |
| 87 | ||
| 88 | slot->type = _NETLINK_SLOT_INVALID; | |
| 89 | slot->netlink = NULL; | |
| 90 | LIST_REMOVE(slots, nl->slots, slot); | |
| 91 | ||
| 92 | if (!slot->floating) | |
| 93 | sd_netlink_unref(nl); | |
| 94 | else if (unref) | |
| 95 | sd_netlink_slot_unref(slot); | |
| 96 | } | |
| 97 | ||
| 98 | static sd_netlink_slot* netlink_slot_free(sd_netlink_slot *slot) { | |
| 99 | assert(slot); | |
| 100 | ||
| 101 | netlink_slot_disconnect(slot, false); | |
| 102 | ||
| 103 | if (slot->destroy_callback) | |
| 104 | slot->destroy_callback(slot->userdata); | |
| 105 | ||
| 106 | return mfree(slot); | |
| 107 | } | |
| 108 | ||
| 109 | DEFINE_PUBLIC_TRIVIAL_REF_UNREF_FUNC(sd_netlink_slot, sd_netlink_slot, netlink_slot_free); |