mirror of
https://github.com/freebsd/freebsd-src
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c3e9423743
Reviewed by: emaste Event: Kitchener-Waterloo Hackathon 202406 Differential Revision: https://reviews.freebsd.org/D45441
332 lines
10 KiB
C
332 lines
10 KiB
C
/*-
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* SPDX-License-Identifier: BSD-4-Clause
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*
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* Copyright (c) 1997 Peter Wemm.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the FreeBSD Project
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* by Peter Wemm.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* so there!
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*/
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#pragma once
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#include <libifconfig.h>
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#include <stdbool.h>
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#include <net/if_types.h>
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#define __constructor __attribute__((constructor))
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#ifdef WITHOUT_NETLINK
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#define __netlink_used __unused
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#define __netlink_unused
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#else
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#define __netlink_used
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#define __netlink_unused __unused
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#endif
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struct afswtch;
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struct cmd;
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struct snl_state;
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struct ifconfig_args;
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struct ifconfig_context {
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struct ifconfig_args *args;
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const struct afswtch *afp;
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int io_s; /* fd to use for ioctl() */
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struct snl_state *io_ss; /* NETLINK_ROUTE socket */
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const char *ifname; /* Current interface name */
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char _ifname_storage_ioctl[IFNAMSIZ];
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};
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typedef struct ifconfig_context if_ctx;
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typedef void c_func(if_ctx *ctx, const char *cmd, int arg);
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typedef void c_func2(if_ctx *ctx, const char *arg1, const char *arg2);
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typedef void c_func3(if_ctx *ctx, const char *cmd, const char *arg);
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struct cmd {
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const char *c_name;
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int c_parameter;
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#define NEXTARG 0xffffff /* has following arg */
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#define NEXTARG2 0xfffffe /* has 2 following args */
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#define OPTARG 0xfffffd /* has optional following arg */
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#define SPARAM 0xfffffc /* parameter is string c_sparameter */
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const char *c_sparameter;
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union {
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c_func *c_func;
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c_func2 *c_func2;
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c_func3 *c_func3;
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} c_u;
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int c_iscloneop;
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struct cmd *c_next;
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};
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void cmd_register(struct cmd *);
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typedef void callback_func(if_ctx *, void *);
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void callback_register(callback_func *, void *);
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/*
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* Macros for initializing command handlers.
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*/
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#define DEF_CMD(name, param, func) { \
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.c_name = (name), \
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.c_parameter = (param), \
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.c_u = { .c_func = (func) }, \
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.c_iscloneop = 0, \
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.c_next = NULL, \
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}
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#define DEF_CMD_ARG(name, func) { \
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.c_name = (name), \
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.c_parameter = NEXTARG, \
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.c_u = { .c_func = (func) }, \
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.c_iscloneop = 0, \
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.c_next = NULL, \
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}
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#define DEF_CMD_OPTARG(name, func) { \
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.c_name = (name), \
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.c_parameter = OPTARG, \
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.c_u = { .c_func = (func) }, \
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.c_iscloneop = 0, \
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.c_next = NULL, \
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}
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#define DEF_CMD_ARG2(name, func) { \
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.c_name = (name), \
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.c_parameter = NEXTARG2, \
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.c_u = { .c_func2 = (func) }, \
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.c_iscloneop = 0, \
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.c_next = NULL, \
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}
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#define DEF_CMD_SARG(name, sparam, func) { \
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.c_name = (name), \
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.c_parameter = SPARAM, \
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.c_sparameter = (sparam), \
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.c_u = { .c_func3 = (func) }, \
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.c_iscloneop = 0, \
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.c_next = NULL, \
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}
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#define DEF_CLONE_CMD(name, param, func) { \
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.c_name = (name), \
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.c_parameter = (param), \
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.c_u = { .c_func = (func) }, \
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.c_iscloneop = 1, \
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.c_next = NULL, \
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}
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#define DEF_CLONE_CMD_ARG(name, func) { \
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.c_name = (name), \
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.c_parameter = NEXTARG, \
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.c_u = { .c_func = (func) }, \
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.c_iscloneop = 1, \
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.c_next = NULL, \
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}
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#define DEF_CLONE_CMD_ARG2(name, func) { \
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.c_name = (name), \
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.c_parameter = NEXTARG2, \
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.c_u = { .c_func2 = (func) }, \
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.c_iscloneop = 1, \
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.c_next = NULL, \
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}
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#define ioctl_ctx(ctx, _req, ...) ioctl((ctx)->io_s, _req, ## __VA_ARGS__)
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int ioctl_ctx_ifr(if_ctx *ctx, unsigned long cmd, struct ifreq *ifr);
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struct ifaddrs;
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struct addrinfo;
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enum {
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RIDADDR = 0,
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ADDR = 1,
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MASK = 2,
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DSTADDR = 3,
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#ifdef WITHOUT_NETLINK
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BRDADDR = 3,
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#else
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BRDADDR = 4,
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#endif
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};
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struct snl_parsed_addr;
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struct snl_parsed_link;
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typedef struct snl_parsed_link if_link_t;
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typedef struct snl_parsed_addr if_addr_t;
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typedef void af_setvhid_f(int vhid);
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typedef void af_status_nl_f(if_ctx *ctx, if_link_t *link, if_addr_t *ifa);
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typedef void af_status_f(if_ctx *ctx, const struct ifaddrs *);
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typedef void af_other_status_f(if_ctx *ctx);
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typedef void af_postproc_f(if_ctx *ctx, int newaddr, int ifflags);
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typedef int af_exec_f(if_ctx *ctx, unsigned long action, void *data);
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typedef void af_copyaddr_f(if_ctx *ctx, int to, int from);
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typedef void af_status_tunnel_f(if_ctx *ctx);
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typedef void af_settunnel_f(if_ctx *ctx, struct addrinfo *srcres, struct addrinfo *dstres);
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struct afswtch {
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const char *af_name; /* as given on cmd line, e.g. "inet" */
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short af_af; /* AF_* */
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/*
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* Status is handled one of two ways; if there is an
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* address associated with the interface then the
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* associated address family af_status method is invoked
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* with the appropriate addressin info. Otherwise, if
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* all possible info is to be displayed and af_other_status
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* is defined then it is invoked after all address status
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* is presented.
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*/
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#ifndef WITHOUT_NETLINK
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af_status_nl_f *af_status;
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#else
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af_status_f *af_status;
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#endif
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af_other_status_f *af_other_status;
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void (*af_getaddr)(const char *, int);
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af_copyaddr_f *af_copyaddr; /* Copy address between <RID|*>ADDR */
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/* parse prefix method (IPv6) */
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void (*af_getprefix)(const char *, int);
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af_postproc_f *af_postproc;
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af_setvhid_f *af_setvhid; /* Set CARP vhid for an address */
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af_exec_f *af_exec; /* Handler to interact with kernel */
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u_long af_difaddr; /* set dst if address ioctl */
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u_long af_aifaddr; /* set if address ioctl */
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void *af_ridreq; /* */
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void *af_addreq; /* */
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struct afswtch *af_next;
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/* XXX doesn't fit model */
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af_status_tunnel_f *af_status_tunnel;
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af_settunnel_f *af_settunnel;
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};
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void af_register(struct afswtch *);
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int af_exec_ioctl(if_ctx *ctx, unsigned long action, void *data);
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struct ifconfig_args {
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bool all; /* Match everything */
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bool downonly; /* Down-only items */
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bool uponly; /* Up-only items */
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bool namesonly; /* Output only names */
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bool noload; /* Do not load relevant kernel modules */
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bool supmedia; /* Supported media */
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bool printkeys; /* Print security keys */
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bool allfamilies; /* Print all families */
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bool drivername; /* Print driver name */
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int verbose; /* verbosity level */
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int argc;
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char **argv;
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const char *ifname; /* Requested interface name */
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const char *matchgroup; /* Group name to match */
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const char *nogroup; /* Group name to exclude */
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const struct afswtch *afp; /* AF we're operating on */
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const char *jail_name; /* Jail name or jail id specified */
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};
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struct option {
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const char *opt;
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const char *opt_usage;
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void (*cb)(const char *arg);
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struct option *next;
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};
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void opt_register(struct option *);
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extern ifconfig_handle_t *lifh;
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extern int allmedia;
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extern int exit_code;
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extern char *f_inet, *f_inet6, *f_ether, *f_addr;
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void clearifcap(if_ctx *ctx, const char *, int value);
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void setifcap(if_ctx *ctx, const char *, int value);
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void setifcapnv(if_ctx *ctx, const char *vname, const char *arg);
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void Perror(const char *cmd);
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void print_bits(const char *btype, uint32_t *v, const int v_count,
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const char **names, const int n_count);
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void printb(const char *s, unsigned value, const char *bits);
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void ifmaybeload(struct ifconfig_args *args, const char *name);
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typedef int clone_match_func(const char *);
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typedef void clone_callback_func(if_ctx *, struct ifreq *);
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void clone_setdefcallback_prefix(const char *, clone_callback_func *);
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void clone_setdefcallback_filter(clone_match_func *, clone_callback_func *);
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void sfp_status(if_ctx *ctx);
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struct sockaddr_dl;
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bool match_ether(const struct sockaddr_dl *sdl);
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bool match_if_flags(struct ifconfig_args *args, int if_flags);
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int ifconfig_ioctl(if_ctx *ctx, int iscreate, const struct afswtch *uafp);
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bool group_member(const char *ifname, const char *match, const char *nomatch);
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void tunnel_status(if_ctx *ctx);
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struct afswtch *af_getbyfamily(int af);
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void af_other_status(if_ctx *ctx);
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void print_ifstatus(if_ctx *ctx);
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void print_metric(if_ctx *ctx);
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ifType convert_iftype(ifType iftype);
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/* Netlink-related functions */
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void list_interfaces_nl(struct ifconfig_args *args);
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int ifconfig_nl(if_ctx *ctx, int iscreate,
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const struct afswtch *uafp);
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uint32_t if_nametoindex_nl(struct snl_state *ss, const char *ifname);
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/*
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* XXX expose this so modules that need to know of any pending
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* operations on ifmedia can avoid cmd line ordering confusion.
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*/
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struct ifmediareq *ifmedia_getstate(if_ctx *ctx);
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void print_vhid(const struct ifaddrs *);
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void ifcreate_ioctl(if_ctx *ctx, struct ifreq *ifr);
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/* Helpers */
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struct sockaddr_in;
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struct sockaddr_in6;
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struct sockaddr;
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static inline struct sockaddr_in6 *
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satosin6(struct sockaddr *sa)
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{
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return ((struct sockaddr_in6 *)(void *)sa);
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}
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static inline struct sockaddr_in *
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satosin(struct sockaddr *sa)
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{
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return ((struct sockaddr_in *)(void *)sa);
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}
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static inline struct sockaddr_dl *
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satosdl(struct sockaddr *sa)
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{
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return ((struct sockaddr_dl *)(void *)sa);
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}
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static inline const struct sockaddr_dl *
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satosdl_c(const struct sockaddr *sa)
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{
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return ((const struct sockaddr_dl *)(const void *)sa);
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}
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