Linux altar53.supremepanel53.com 4.18.0-553.8.1.lve.el8.x86_64 #1 SMP Thu Jul 4 16:24:39 UTC 2024 x86_64
/ usr/ include/ libnl3/ netlink/ |
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/* SPDX-License-Identifier: LGPL-2.1-only */ /* * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch> */ #ifndef NETLINK_MSG_H_ #define NETLINK_MSG_H_ #include <netlink/netlink.h> #include <netlink/object.h> #include <netlink/attr.h> #ifdef __cplusplus extern "C" { #endif struct nlmsghdr; #define NL_DONTPAD 0 /** * @ingroup msg * @brief * Will cause the netlink port to be set to the port assigned to * the netlink icoket ust before sending the message off. * * @note Requires the use of nl_send_auto()! */ #define NL_AUTO_PORT 0 #define NL_AUTO_PID NL_AUTO_PORT /** * @ingroup msg * @brief * May be used to refer to a sequence number which should be * automatically set just before sending the message off. * * @note Requires the use of nl_send_auto()! */ #define NL_AUTO_SEQ 0 struct nl_msg; struct nl_tree; struct ucred; extern int nlmsg_size(int); extern int nlmsg_total_size(int); extern int nlmsg_padlen(int); extern void * nlmsg_data(const struct nlmsghdr *); extern int nlmsg_datalen(const struct nlmsghdr *); extern void * nlmsg_tail(const struct nlmsghdr *); /* attribute access */ extern struct nlattr * nlmsg_attrdata(const struct nlmsghdr *, int); extern int nlmsg_attrlen(const struct nlmsghdr *, int); /* message parsing */ extern int nlmsg_valid_hdr(const struct nlmsghdr *, int); extern int nlmsg_ok(const struct nlmsghdr *, int); extern struct nlmsghdr * nlmsg_next(struct nlmsghdr *, int *); extern int nlmsg_parse(struct nlmsghdr *, int, struct nlattr **, int, const struct nla_policy *); extern struct nlattr * nlmsg_find_attr(struct nlmsghdr *, int, int); extern int nlmsg_validate(struct nlmsghdr *, int, int, const struct nla_policy *); extern struct nl_msg * nlmsg_alloc(void); extern struct nl_msg * nlmsg_alloc_size(size_t); extern struct nl_msg * nlmsg_alloc_simple(int, int); extern void nlmsg_set_default_size(size_t); extern struct nl_msg * nlmsg_inherit(struct nlmsghdr *); extern struct nl_msg * nlmsg_convert(struct nlmsghdr *); extern void * nlmsg_reserve(struct nl_msg *, size_t, int); extern int nlmsg_append(struct nl_msg *, void *, size_t, int); extern int nlmsg_expand(struct nl_msg *, size_t); extern struct nlmsghdr * nlmsg_put(struct nl_msg *, uint32_t, uint32_t, int, int, int); extern struct nlmsghdr * nlmsg_hdr(struct nl_msg *); extern void nlmsg_get(struct nl_msg *); extern void nlmsg_free(struct nl_msg *); /* attribute modification */ extern void nlmsg_set_proto(struct nl_msg *, int); extern int nlmsg_get_proto(struct nl_msg *); extern size_t nlmsg_get_max_size(struct nl_msg *); extern void nlmsg_set_src(struct nl_msg *, struct sockaddr_nl *); extern struct sockaddr_nl *nlmsg_get_src(struct nl_msg *); extern void nlmsg_set_dst(struct nl_msg *, struct sockaddr_nl *); extern struct sockaddr_nl *nlmsg_get_dst(struct nl_msg *); extern void nlmsg_set_creds(struct nl_msg *, struct ucred *); extern struct ucred * nlmsg_get_creds(struct nl_msg *); extern char * nl_nlmsgtype2str(int, char *, size_t); extern int nl_str2nlmsgtype(const char *); extern char * nl_nlmsg_flags2str(int, char *, size_t); extern int nl_msg_parse(struct nl_msg *, void (*cb)(struct nl_object *, void *), void *); extern void nl_msg_dump(struct nl_msg *, FILE *); /** * @name Iterators * @{ */ /** * @ingroup msg * Iterate over a stream of attributes in a message * @arg pos loop counter, set to current attribute * @arg nlh netlink message header * @arg hdrlen length of family header * @arg rem initialized to len, holds bytes currently remaining in stream */ #define nlmsg_for_each_attr(pos, nlh, hdrlen, rem) \ nla_for_each_attr(pos, nlmsg_attrdata(nlh, hdrlen), \ nlmsg_attrlen(nlh, hdrlen), rem) /** * Iterate over a stream of messages * @arg pos loop counter, set to current message * @arg head head of message stream * @arg len length of message stream */ #define nlmsg_for_each(pos, head, len) \ for (int rem = len, pos = head; \ nlmsg_ok(pos, rem); \ pos = nlmsg_next(pos, &rem)) #define nlmsg_for_each_msg(pos, head, len, rem) \ nlmsg_for_each(pos, head, len) /** @} */ #ifdef __cplusplus } #endif #endif