Adding upstream version 241.upstream/241upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 149 insertions, 0 deletions

diff --git a/src/libsystemd/sd-netlink/netlink-internal.h b/src/libsystemd/sd-netlink/netlink-internal.h
new file mode 100644
index 0000000..98de4f0
--- /dev/null
+++ b/src/libsystemd/sd-netlink/netlink-internal.h
@@ -0,0 +1,149 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+#pragma once
+
+#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;
+        usec_t timeout;
+        uint64_t serial;
+        unsigned prioq_idx;
+};
+
+struct match_callback {
+        sd_netlink_message_handler_t callback;
+        uint16_t type;
+
+        LIST_FIELDS(struct match_callback, match_callbacks);
+};
+
+typedef enum NetlinkSlotType {
+        NETLINK_REPLY_CALLBACK,
+        NETLINK_MATCH_CALLBACK,
+        _NETLINK_SLOT_INVALID = -1,
+} NetlinkSlotType;
+
+struct sd_netlink_slot {
+        unsigned n_ref;
+        sd_netlink *netlink;
+        void *userdata;
+        sd_netlink_destroy_t destroy_callback;
+        NetlinkSlotType type:2;
+
+        bool floating:1;
+        char *description;
+
+        LIST_FIELDS(sd_netlink_slot, slots);
+
+        union {
+                struct reply_callback reply_callback;
+                struct match_callback match_callback;
+        };
+};
+
+struct sd_netlink {
+        RefCount n_ref;
+
+        int fd;
+
+        union {
+                struct sockaddr sa;
+                struct sockaddr_nl nl;
+        } sockaddr;
+
+        int protocol;
+
+        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);
+
+        LIST_HEAD(sd_netlink_slot, slots);
+
+        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;
+
+        int protocol;
+
+        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 netlink_open_family(sd_netlink **ret, int family);
+
+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)