ifconfig源代码-NetBSD
2024-06-07 03:11:49
NetBSD是一个免费的，具有高度移植性的 UNIX-like 操作系统，是现行可移植平台最多的操作系统，可以在许多平台上执行，从 64bit alpha 服务器到手持设备和嵌入式设备。NetBSD计划的口号是："Of course it runs NetBSD"。它设计简洁，代码规范，拥有众多先进特性，使得它在业界和学术界广受好评。由于简洁的设计和先进的特征，使得它在生产和研究方面，都有卓越的表现，而且它也有受使用者支持的完整的源代码。许多程序都可以很容易地通过NetBSD Packages Collection获得。
https://www.xuebuyuan.com/950294.html
仿佛找到了SIOCIFCREATE
/* $NetBSD: ifconfig.c,v 1.169 2005/08/11 20:56:05 rpaulo Exp $ *//*-* Copyright (c) 1997, 1998, 2000 The NetBSD Foundation, Inc.* All rights reserved.** This code is derived from software contributed to The NetBSD Foundation* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,* NASA Ames Research Center.** Redistribution and use in source and binary forms, with or without* modification, are permitted provided that the following conditions* are met:* 1. Redistributions of source code must retain the above copyright* notice, this list of conditions and the following disclaimer.* 2. Redistributions in binary form must reproduce the above copyright* notice, this list of conditions and the following disclaimer in the* documentation and/or other materials provided with the distribution.* 3. All advertising materials mentioning features or use of this software* must display the following acknowledgement:* This product includes software developed by the NetBSD* Foundation, Inc. and its contributors.* 4. Neither the name of The NetBSD Foundation nor the names of its* contributors may be used to endorse or promote products derived* from this software without specific prior written permission.** THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE* POSSIBILITY OF SUCH DAMAGE.*//** Copyright (c) 1983, 1993* The Regents of the University of California. All rights reserved.** Redistribution and use in source and binary forms, with or without* modification, are permitted provided that the following conditions* are met:* 1. Redistributions of source code must retain the above copyright* notice, this list of conditions and the following disclaimer.* 2. Redistributions in binary form must reproduce the above copyright* notice, this list of conditions and the following disclaimer in the* documentation and/or other materials provided with the distribution.* 3. Neither the name of the University nor the names of its contributors* may be used to endorse or promote products derived from this software* without specific prior written permission.** THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF* SUCH DAMAGE.*/#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1983, 1993\n\The Regents of the University of California. All rights reserved.\n");
#endif /* not lint */#ifndef lint
#if 0
static char sccsid[] = "@(#)ifconfig.c 8.2 (Berkeley) 2/16/94";
#else
__RCSID("$NetBSD: ifconfig.c,v 1.169 2005/08/11 20:56:05 rpaulo Exp {1}quot;);
#endif
#endif /* not lint */#include <sys/param.h>
#include <sys/socket.h>
#include <sys/ioctl.h>#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_ether.h>
#include <netinet/in.h> /* XXX */
#include <netinet/in_var.h> /* XXX */#include <netdb.h>#include <sys/protosw.h>#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <ifaddrs.h>
#include <util.h>#include "extern.h"#ifndef INET_ONLY
#include "af_atalk.h"
#include "af_iso.h"
#include "af_ns.h"
#endif /* ! INET_ONLY */
#include "af_inet.h"
#ifdef INET6
#include "af_inet6.h"
#endif /* INET6 */#include "agr.h"
#include "ieee80211.h"
#include "tunnel.h"
#include "vlan.h"struct ifreq ifr, ridreq;
struct ifaliasreq addreq __attribute__((aligned(4)));char name[30];
u_short flags;
int setaddr, doalias;
u_long metric, mtu;
int clearaddr, s;
int newaddr = -1;
int conflicting = 0;
int af;
int aflag, bflag, Cflag, dflag, lflag, mflag, sflag, uflag, vflag, zflag;
int hflag;
#ifdef INET6
int Lflag;
#endif
int explicit_prefix = 0;struct ifcapreq g_ifcr;
int g_ifcr_updated;void notealias(const char *, int);
void notrailers(const char *, int);
void setifaddr(const char *, int);
void setifdstaddr(const char *, int);
void setifflags(const char *, int);
void setifcaps(const char *, int);
void setifbroadaddr(const char *, int);
void setifipdst(const char *, int);
void setifmetric(const char *, int);
void setifmtu(const char *, int);
void setifnetmask(const char *, int);
void setifprefixlen(const char *, int);
void setmedia(const char *, int);
void setmediamode(const char *, int);
void setmediaopt(const char *, int);
void unsetmediaopt(const char *, int);
void setmediainst(const char *, int);
void clone_create(const char *, int);
void clone_destroy(const char *, int);
int main(int, char *[]);/** Media stuff. Whenever a media command is first performed, the* currently select media is grabbed for this interface. If `media'* is given, the current media word is modifed. `mediaopt' commands* only modify the set and clear words. They then operate on the* current media word later.*/
int media_current;
int mediaopt_set;
int mediaopt_clear;int actions; /* Actions performed */#define A_MEDIA 0x0001 /* media command */
#define A_MEDIAOPTSET 0x0002 /* mediaopt command */
#define A_MEDIAOPTCLR 0x0004 /* -mediaopt command */
#define A_MEDIAOPT (A_MEDIAOPTSET|A_MEDIAOPTCLR)
#define A_MEDIAINST 0x0008 /* instance or inst command */
#define A_MEDIAMODE 0x0010 /* mode command */#define NEXTARG 0xffffff
#define NEXTARG2 0xfffffeconst struct cmd {const char *c_name;int c_parameter; /* NEXTARG means next argv */int c_action; /* defered action */void (*c_func)(const char *, int);void (*c_func2)(const char *, const char *);
} cmds[] = {{ "up", IFF_UP, 0, setifflags } ,{ "down", -IFF_UP, 0, setifflags },{ "trailers", -1, 0, notrailers },{ "-trailers", 1, 0, notrailers },{ "arp", -IFF_NOARP, 0, setifflags },{ "-arp", IFF_NOARP, 0, setifflags },{ "debug", IFF_DEBUG, 0, setifflags },{ "-debug", -IFF_DEBUG, 0, setifflags },{ "alias", IFF_UP, 0, notealias },{ "-alias", -IFF_UP, 0, notealias },{ "delete", -IFF_UP, 0, notealias },
#ifdef notdef
#define EN_SWABIPS 0x1000{ "swabips", EN_SWABIPS, 0, setifflags },{ "-swabips", -EN_SWABIPS, 0, setifflags },
#endif{ "netmask", NEXTARG, 0, setifnetmask },{ "metric", NEXTARG, 0, setifmetric },{ "mtu", NEXTARG, 0, setifmtu },{ "bssid", NEXTARG, 0, setifbssid },{ "-bssid", -1, 0, setifbssid },{ "chan", NEXTARG, 0, setifchan },{ "-chan", -1, 0, setifchan },{ "ssid", NEXTARG, 0, setifnwid },{ "nwid", NEXTARG, 0, setifnwid },{ "nwkey", NEXTARG, 0, setifnwkey },{ "-nwkey", -1, 0, setifnwkey },{ "powersave", 1, 0, setifpowersave },{ "-powersave", 0, 0, setifpowersave },{ "powersavesleep", NEXTARG, 0, setifpowersavesleep },{ "broadcast", NEXTARG, 0, setifbroadaddr },{ "ipdst", NEXTARG, 0, setifipdst },{ "prefixlen", NEXTARG, 0, setifprefixlen},
#ifdef INET6{ "anycast", IN6_IFF_ANYCAST, 0, setia6flags },{ "-anycast", -IN6_IFF_ANYCAST, 0, setia6flags },{ "tentative", IN6_IFF_TENTATIVE, 0, setia6flags },{ "-tentative", -IN6_IFF_TENTATIVE, 0, setia6flags },{ "deprecated", IN6_IFF_DEPRECATED, 0, setia6flags },{ "-deprecated", -IN6_IFF_DEPRECATED, 0, setia6flags },{ "pltime", NEXTARG, 0, setia6pltime },{ "vltime", NEXTARG, 0, setia6vltime },{ "eui64", 0, 0, setia6eui64 },
#endif /*INET6*/
#ifndef INET_ONLY{ "range", NEXTARG, 0, setatrange },{ "phase", NEXTARG, 0, setatphase },{ "snpaoffset", NEXTARG, 0, setsnpaoffset },{ "nsellength", NEXTARG, 0, setnsellength },
#endif /* INET_ONLY */{ "tunnel", NEXTARG2, 0, NULL,settunnel } ,{ "deletetunnel", 0, 0, deletetunnel },{ "vlan", NEXTARG, 0, setvlan } ,{ "vlanif", NEXTARG, 0, setvlanif } ,{ "-vlanif", 0, 0, unsetvlanif } ,
#if 0/* XXX `create' special-cased below */{ "create", 0, 0, clone_create } ,
#endif{ "destroy", 0, 0, clone_destroy } ,{ "link0", IFF_LINK0, 0, setifflags } ,{ "-link0", -IFF_LINK0, 0, setifflags } ,{ "link1", IFF_LINK1, 0, setifflags } ,{ "-link1", -IFF_LINK1, 0, setifflags } ,{ "link2", IFF_LINK2, 0, setifflags } ,{ "-link2", -IFF_LINK2, 0, setifflags } ,{ "media", NEXTARG, A_MEDIA, setmedia },{ "mediaopt", NEXTARG, A_MEDIAOPTSET, setmediaopt },{ "-mediaopt", NEXTARG, A_MEDIAOPTCLR, unsetmediaopt },{ "mode", NEXTARG, A_MEDIAMODE, setmediamode },{ "instance", NEXTARG, A_MEDIAINST, setmediainst },{ "inst", NEXTARG, A_MEDIAINST, setmediainst },{ "ip4csum-tx", IFCAP_CSUM_IPv4_Tx,0, setifcaps },{ "-ip4csum-tx",-IFCAP_CSUM_IPv4_Tx,0, setifcaps },{ "ip4csum-rx", IFCAP_CSUM_IPv4_Rx,0, setifcaps },{ "-ip4csum-rx",-IFCAP_CSUM_IPv4_Rx,0, setifcaps },{ "tcp4csum-tx",IFCAP_CSUM_TCPv4_Tx,0, setifcaps },{ "-tcp4csum-tx",-IFCAP_CSUM_TCPv4_Tx,0, setifcaps },{ "tcp4csum-rx",IFCAP_CSUM_TCPv4_Rx,0, setifcaps },{ "-tcp4csum-rx",-IFCAP_CSUM_TCPv4_Rx,0, setifcaps },{ "udp4csum-tx",IFCAP_CSUM_UDPv4_Tx,0, setifcaps },{ "-udp4csum-tx",-IFCAP_CSUM_UDPv4_Tx,0, setifcaps },{ "udp4csum-rx",IFCAP_CSUM_UDPv4_Rx,0, setifcaps },{ "-udp4csum-rx",-IFCAP_CSUM_UDPv4_Rx,0, setifcaps },{ "tcp6csum-tx",IFCAP_CSUM_TCPv6_Tx,0, setifcaps },{ "-tcp6csum-tx",-IFCAP_CSUM_TCPv6_Tx,0, setifcaps },{ "tcp6csum-rx",IFCAP_CSUM_TCPv6_Rx,0, setifcaps },{ "-tcp6csum-rx",-IFCAP_CSUM_TCPv6_Rx,0, setifcaps },{ "udp6csum-tx",IFCAP_CSUM_UDPv6_Tx,0, setifcaps },{ "-udp6csum-tx",-IFCAP_CSUM_UDPv6_Tx,0, setifcaps },{ "udp6csum-rx",IFCAP_CSUM_UDPv6_Rx,0, setifcaps },{ "-udp6csum-rx",-IFCAP_CSUM_UDPv6_Rx,0, setifcaps },{ "ip4csum", IFCAP_CSUM_IPv4_Tx|IFCAP_CSUM_IPv4_Rx,0, setifcaps },{ "-ip4csum", -(IFCAP_CSUM_IPv4_Tx|IFCAP_CSUM_IPv4_Rx),0, setifcaps },{ "tcp4csum", IFCAP_CSUM_TCPv4_Tx|IFCAP_CSUM_TCPv4_Rx,0, setifcaps },{ "-tcp4csum", -(IFCAP_CSUM_TCPv4_Tx|IFCAP_CSUM_TCPv4_Rx),0, setifcaps },{ "udp4csum", IFCAP_CSUM_UDPv4_Tx|IFCAP_CSUM_UDPv4_Rx,0, setifcaps },{ "-udp4csum", -(IFCAP_CSUM_UDPv4_Tx|IFCAP_CSUM_UDPv4_Rx),0, setifcaps },{ "tcp6csum", IFCAP_CSUM_TCPv6_Tx|IFCAP_CSUM_TCPv6_Rx,0, setifcaps },{ "-tcp6csum", -(IFCAP_CSUM_TCPv6_Tx|IFCAP_CSUM_TCPv6_Rx),0, setifcaps },{ "udp6csum", IFCAP_CSUM_UDPv6_Tx|IFCAP_CSUM_UDPv6_Rx,0, setifcaps },{ "-udp6csum", -(IFCAP_CSUM_UDPv6_Tx|IFCAP_CSUM_UDPv6_Rx),0, setifcaps },{ "tso4", IFCAP_TSOv4, 0, setifcaps },{ "-tso4", -IFCAP_TSOv4, 0, setifcaps },{ "agrport", NEXTARG, 0, agraddport } ,{ "-agrport", NEXTARG, 0, agrremport } ,{ 0, 0, 0, setifaddr },{ 0, 0, 0, setifdstaddr },
};int getinfo(struct ifreq *);
int carrier(void);
void printall(const char *);
void list_cloners(void);
void status(const struct sockaddr_dl *);
void usage(void);void print_media_word(int, const char *);
void process_media_commands(void);
void init_current_media(void);/* Known address families */
const struct afswtch afs[] = {{ "inet", AF_INET, in_status, in_getaddr, in_getprefix,SIOCDIFADDR, SIOCAIFADDR, SIOCGIFADDR, &ridreq, &in_addreq },
#ifdef INET6{ "inet6", AF_INET6, in6_status, in6_getaddr, in6_getprefix,SIOCDIFADDR_IN6, SIOCAIFADDR_IN6,/** Deleting the first address before setting new one is* not prefered way in this protocol.*/0,&in6_ridreq, &in6_addreq },
#endif
#ifndef INET_ONLY /* small version, for boot media */{ "atalk", AF_APPLETALK, at_status, at_getaddr, NULL,SIOCDIFADDR, SIOCAIFADDR, SIOCGIFADDR, &addreq, &addreq },{ "ns", AF_NS, xns_status, xns_getaddr, NULL,SIOCDIFADDR, SIOCAIFADDR, SIOCGIFADDR, &ridreq, &addreq },{ "iso", AF_ISO, iso_status, iso_getaddr, NULL,SIOCDIFADDR_ISO, SIOCAIFADDR_ISO, SIOCGIFADDR_ISO,&iso_ridreq, &iso_addreq },
#endif /* INET_ONLY */{ 0, 0, 0, 0 }
};const struct afswtch *afp; /*the address family being set or asked about*/int
main(int argc, char *argv[])
{int ch;/* Parse command-line options */aflag = mflag = vflag = zflag = 0;while ((ch = getopt(argc, argv, "AabCdhlmsuvz"
#ifdef INET6"L"
#endif)) != -1) {switch (ch) {case 'A':warnx("-A is deprecated");break;case 'a':aflag = 1;break;case 'b':bflag = 1;break;case 'C':Cflag = 1;break;case 'd':dflag = 1;break;case 'h':hflag = 1;break;
#ifdef INET6case 'L':Lflag = 1;break;
#endifcase 'l':lflag = 1;break;case 'm':mflag = 1;break;case 's':sflag = 1;break;case 'u':uflag = 1;break;case 'v':vflag = 1;break;case 'z':zflag = 1;break;default:usage();/* NOTREACHED */}}argc -= optind;argv += optind;/** -l means "list all interfaces", and is mutally exclusive with* all other flags/commands.** -C means "list all names of cloners", and it mutually exclusive* with all other flags/commands.** -a means "print status of all interfaces".*/if ((lflag || Cflag) && (aflag || mflag || vflag || argc || zflag))usage();
#ifdef INET6if ((lflag || Cflag) && Lflag)usage();
#endifif (lflag && Cflag)usage();if (Cflag) {if (argc)usage();list_cloners();exit(0);}if (aflag || lflag) {if (argc > 1)usage();else if (argc == 1) {afp = lookup_af_byname(argv[0]);if (afp == NULL)usage();}if (afp)af = ifr.ifr_addr.sa_family = afp->af_af;elseaf = ifr.ifr_addr.sa_family = afs[0].af_af;printall(NULL);exit(0);}/* Make sure there's an interface name. */if (argc < 1)usage();if (strlcpy(name, argv[0], sizeof(name)) >= sizeof(name))errx(1, "interface name '%s' too long", argv[0]);argc--; argv++;/** NOTE: We must special-case the `create' command right* here as we would otherwise fail in getinfo().*/if (argc > 0 && strcmp(argv[0], "create") == 0) {clone_create(argv[0], 0);argc--, argv++;if (argc == 0)exit(0);}/* Check for address family. */afp = NULL;if (argc > 0) {afp = lookup_af_byname(argv[0]);if (afp != NULL) {argv++;argc--;}}/* Initialize af, just for use in getinfo(). */if (afp == NULL)af = afs->af_af;elseaf = afp->af_af;/* Get information about the interface. */(void) strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));if (getinfo(&ifr) < 0)exit(1);if (sflag) {if (argc != 0)usage();elseexit(carrier());}/* No more arguments means interface status. */if (argc == 0) {printall(name);exit(0);}/* The following operations assume inet family as the default. */if (afp == NULL)afp = afs;af = ifr.ifr_addr.sa_family = afp->af_af;#ifdef INET6in6_init();
#endif/* Process commands. */while (argc > 0) {const struct cmd *p;for (p = cmds; p->c_name; p++)if (strcmp(argv[0], p->c_name) == 0)break;if (p->c_name == 0 && setaddr) {if ((flags & IFF_POINTOPOINT) == 0) {errx(EXIT_FAILURE,"can't set destination address %s","on non-point-to-point link");}p++; /* got src, do dst */}if (p->c_func != NULL || p->c_func2 != NULL) {if (p->c_parameter == NEXTARG) {if (argc < 2)errx(EXIT_FAILURE,"'%s' requires argument",p->c_name);(*p->c_func)(argv[1], 0);argc--, argv++;} else if (p->c_parameter == NEXTARG2) {if (argc < 3)errx(EXIT_FAILURE,"'%s' requires 2 arguments",p->c_name);(*p->c_func2)(argv[1], argv[2]);argc -= 2, argv += 2;} else(*p->c_func)(argv[0], p->c_parameter);actions |= p->c_action;}argc--, argv++;}/* * See if multiple alias, -alias, or delete commands were* specified. More than one constitutes an invalid command line*/if (conflicting > 1) errx(EXIT_FAILURE,"Only one use of alias, -alias or delete is valid.");/* Process any media commands that may have been issued. */process_media_commands();if (af == AF_INET6 && explicit_prefix == 0) {/** Aggregatable address architecture defines all prefixes* are 64. So, it is convenient to set prefixlen to 64 if* it is not specified.*/setifprefixlen("64", 0);/* in6_getprefix("64", MASK) if MASK is available here... */}#ifndef INET_ONLYif (af == AF_ISO)adjust_nsellength();if (af == AF_APPLETALK)checkatrange(&addreq.ifra_addr);if (setipdst && af == AF_NS)xns_set_nsip_route(&addreq.ifra_addr, &addreq.ifra_dstaddr);
#endif /* INET_ONLY */if (clearaddr) {(void) strncpy(afp->af_ridreq, name, sizeof ifr.ifr_name);if (ioctl(s, afp->af_difaddr, afp->af_ridreq) == -1)err(EXIT_FAILURE, "SIOCDIFADDR");}if (newaddr > 0) {(void) strncpy(afp->af_addreq, name, sizeof ifr.ifr_name);if (ioctl(s, afp->af_aifaddr, afp->af_addreq) == -1)warn("SIOCAIFADDR");}if (g_ifcr_updated) {(void) strncpy(g_ifcr.ifcr_name, name,sizeof(g_ifcr.ifcr_name));if (ioctl(s, SIOCSIFCAP, &g_ifcr) == -1)err(EXIT_FAILURE, "SIOCSIFCAP");}exit(0);
}const struct afswtch *
lookup_af_byname(const char *cp)
{const struct afswtch *a;for (a = afs; a->af_name != NULL; a++)if (strcmp(a->af_name, cp) == 0)return (a);return (NULL);
}const struct afswtch *
lookup_af_bynum(int afnum)
{const struct afswtch *a;for (a = afs; a->af_name != NULL; a++)if (a->af_af == afnum)return (a);return (NULL);
}void
getsock(int naf)
{static int oaf = -1;if (oaf == naf)return;if (oaf != -1)close(s);s = socket(naf, SOCK_DGRAM, 0);if (s < 0)oaf = -1;elseoaf = naf;
}int
getinfo(struct ifreq *giifr)
{getsock(af);if (s < 0)err(EXIT_FAILURE, "socket");if (ioctl(s, SIOCGIFFLAGS, giifr) == -1) {warn("SIOCGIFFLAGS %s", giifr->ifr_name);return (-1);}flags = giifr->ifr_flags;if (ioctl(s, SIOCGIFMETRIC, giifr) == -1) {warn("SIOCGIFMETRIC %s", giifr->ifr_name);metric = 0;} elsemetric = giifr->ifr_metric;if (ioctl(s, SIOCGIFMTU, giifr) == -1)mtu = 0;elsemtu = giifr->ifr_mtu;memset(&g_ifcr, 0, sizeof(g_ifcr));strcpy(g_ifcr.ifcr_name, giifr->ifr_name);(void) ioctl(s, SIOCGIFCAP, &g_ifcr);return (0);
}void
printall(const char *ifname)
{struct ifaddrs *ifap, *ifa;struct ifreq paifr;const struct sockaddr_dl *sdl = NULL;int idx;char *p;if (getifaddrs(&ifap) != 0)err(EXIT_FAILURE, "getifaddrs");p = NULL;idx = 0;for (ifa = ifap; ifa; ifa = ifa->ifa_next) {memset(&paifr, 0, sizeof(paifr));strncpy(paifr.ifr_name, ifa->ifa_name, sizeof(paifr.ifr_name));if (sizeof(paifr.ifr_addr) >= ifa->ifa_addr->sa_len) {memcpy(&paifr.ifr_addr, ifa->ifa_addr,ifa->ifa_addr->sa_len);}if (ifname && strcmp(ifname, ifa->ifa_name) != 0)continue;if (ifa->ifa_addr->sa_family == AF_LINK)sdl = (const struct sockaddr_dl *) ifa->ifa_addr;if (p && strcmp(p, ifa->ifa_name) == 0)continue;if (strlcpy(name, ifa->ifa_name, sizeof(name)) >= sizeof(name))continue;p = ifa->ifa_name;if (getinfo(&paifr) < 0)continue;if (bflag && (ifa->ifa_flags & IFF_BROADCAST) == 0)continue;if (dflag && (ifa->ifa_flags & IFF_UP) != 0)continue;if (uflag && (ifa->ifa_flags & IFF_UP) == 0)continue;if (sflag && carrier())continue;idx++;/** Are we just listing the interfaces?*/if (lflag) {if (idx > 1)printf(" ");fputs(name, stdout);continue;}status(sdl);sdl = NULL;}if (lflag)printf("\n");freeifaddrs(ifap);
}void
list_cloners(void)
{struct if_clonereq ifcr;char *cp, *buf;int idx;memset(&ifcr, 0, sizeof(ifcr));getsock(AF_INET);if (ioctl(s, SIOCIFGCLONERS, &ifcr) == -1)err(EXIT_FAILURE, "SIOCIFGCLONERS for count");buf = malloc(ifcr.ifcr_total * IFNAMSIZ);if (buf == NULL)err(EXIT_FAILURE, "unable to allocate cloner name buffer");ifcr.ifcr_count = ifcr.ifcr_total;ifcr.ifcr_buffer = buf;if (ioctl(s, SIOCIFGCLONERS, &ifcr) == -1)err(EXIT_FAILURE, "SIOCIFGCLONERS for names");/** In case some disappeared in the mean time, clamp it down.*/if (ifcr.ifcr_count > ifcr.ifcr_total)ifcr.ifcr_count = ifcr.ifcr_total;for (cp = buf, idx = 0; idx < ifcr.ifcr_count; idx++, cp += IFNAMSIZ) {if (idx > 0)printf(" ");printf("%s", cp);}printf("\n");free(buf);return;
}/*ARGSUSED*/
void
clone_create(const char *addr, int param)
{/* We're called early... */getsock(AF_INET);(void) strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));if (ioctl(s, SIOCIFCREATE, &ifr) == -1)err(EXIT_FAILURE, "SIOCIFCREATE");
}/*ARGSUSED*/
void
clone_destroy(const char *addr, int param)
{(void) strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));if (ioctl(s, SIOCIFDESTROY, &ifr) == -1)err(EXIT_FAILURE, "SIOCIFDESTROY");
}/*ARGSUSED*/
void
setifaddr(const char *addr, int param)
{struct ifreq *siifr; /* XXX *//** Delay the ioctl to set the interface addr until flags are all set.* The address interpretation may depend on the flags,* and the flags may change when the address is set.*/setaddr++;if (newaddr == -1)newaddr = 1;if (doalias == 0 && afp->af_gifaddr != 0) {siifr = (struct ifreq *)afp->af_ridreq;(void) strncpy(siifr->ifr_name, name, sizeof(siifr->ifr_name));siifr->ifr_addr.sa_family = afp->af_af;if (ioctl(s, afp->af_gifaddr, afp->af_ridreq) == 0)clearaddr = 1;else if (errno == EADDRNOTAVAIL)/* No address was assigned yet. */;elseerr(EXIT_FAILURE, "SIOCGIFADDR");}(*afp->af_getaddr)(addr, (doalias >= 0 ? ADDR : RIDADDR));
}void
setifnetmask(const char *addr, int d)
{(*afp->af_getaddr)(addr, MASK);
}void
setifbroadaddr(const char *addr, int d)
{(*afp->af_getaddr)(addr, DSTADDR);
}#define rqtosa(x) (&(((struct ifreq *)(afp->x))->ifr_addr))
/*ARGSUSED*/
void
notealias(const char *addr, int param)
{if (setaddr && doalias == 0 && param < 0)(void) memcpy(rqtosa(af_ridreq), rqtosa(af_addreq),rqtosa(af_addreq)->sa_len);doalias = param;if (param < 0) {clearaddr = 1;newaddr = 0;conflicting++;} else {clearaddr = 0;conflicting++;}
}/*ARGSUSED*/
void
notrailers(const char *vname, int value)
{puts("Note: trailers are no longer sent, but always received");
}/*ARGSUSED*/
void
setifdstaddr(const char *addr, int param)
{(*afp->af_getaddr)(addr, DSTADDR);
}void
setifflags(const char *vname, int value)
{struct ifreq ifreq;(void) strncpy(ifreq.ifr_name, name, sizeof(ifreq.ifr_name));if (ioctl(s, SIOCGIFFLAGS, &ifreq) == -1)err(EXIT_FAILURE, "SIOCGIFFLAGS");flags = ifreq.ifr_flags;if (value < 0) {value = -value;flags &= ~value;} elseflags |= value;ifreq.ifr_flags = flags;if (ioctl(s, SIOCSIFFLAGS, &ifreq) == -1)err(EXIT_FAILURE, "SIOCSIFFLAGS");
}void
setifcaps(const char *vname, int value)
{if (value < 0) {value = -value;g_ifcr.ifcr_capenable &= ~value;} elseg_ifcr.ifcr_capenable |= value;g_ifcr_updated = 1;
}void
setifmetric(const char *val, int d)
{char *ep = NULL;(void) strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));ifr.ifr_metric = strtoul(val, &ep, 10);if (!ep || *ep)errx(EXIT_FAILURE, "%s: invalid metric", val);if (ioctl(s, SIOCSIFMETRIC, &ifr) == -1)warn("SIOCSIFMETRIC");
}void
setifmtu(const char *val, int d)
{char *ep = NULL;(void)strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));ifr.ifr_mtu = strtoul(val, &ep, 10);if (!ep || *ep)errx(EXIT_FAILURE, "%s: invalid mtu", val);if (ioctl(s, SIOCSIFMTU, &ifr) == -1)warn("SIOCSIFMTU");
}const char *
get_string(const char *val, const char *sep, u_int8_t *buf, int *lenp)
{int len;int hexstr;u_int8_t *p;len = *lenp;p = buf;hexstr = (val[0] == '0' && tolower((u_char)val[1]) == 'x');if (hexstr)val += 2;for (;;) {if (*val == '\0')break;if (sep != NULL && strchr(sep, *val) != NULL) {val++;break;}if (hexstr) {if (!isxdigit((u_char)val[0]) ||!isxdigit((u_char)val[1])) {warnx("bad hexadecimal digits");return NULL;}}if (p > buf + len) {if (hexstr)warnx("hexadecimal digits too long");elsewarnx("strings too long");return NULL;}if (hexstr) {
#define tohex(x) (isdigit(x) ? (x) - '0' : tolower(x) - 'a' + 10)*p++ = (tohex((u_char)val[0]) << 4) |tohex((u_char)val[1]);
#undef tohexval += 2;} else*p++ = *val++;}len = p - buf;if (len < *lenp)memset(p, 0, *lenp - len);*lenp = len;return val;
}void
print_string(const u_int8_t *buf, int len)
{int i;int hasspc;i = 0;hasspc = 0;if (len < 2 || buf[0] != '0' || tolower(buf[1]) != 'x') {for (; i < len; i++) {if (!isprint(buf[i]))break;if (isspace(buf[i]))hasspc++;}}if (i == len) {if (hasspc || len == 0)printf("\"%.*s\"", len, buf);elseprintf("%.*s", len, buf);} else {printf("0x");for (i = 0; i < len; i++)printf("%02x", buf[i]);}
}static void
media_error(int type, const char *val, const char *opt)
{errx(EXIT_FAILURE, "unknown %s media %s: %s",get_media_type_string(type), opt, val);
}void
init_current_media(void)
{struct ifmediareq ifmr;/** If we have not yet done so, grab the currently-selected* media.*/if ((actions & (A_MEDIA|A_MEDIAOPT|A_MEDIAMODE)) == 0) {(void) memset(&ifmr, 0, sizeof(ifmr));(void) strncpy(ifmr.ifm_name, name, sizeof(ifmr.ifm_name));if (ioctl(s, SIOCGIFMEDIA, &ifmr) == -1) {/** If we get E2BIG, the kernel is telling us* that there are more, so we can ignore it.*/if (errno != E2BIG)err(EXIT_FAILURE, "SGIOCGIFMEDIA");}media_current = ifmr.ifm_current;}/* Sanity. */if (IFM_TYPE(media_current) == 0)errx(EXIT_FAILURE, "%s: no link type?", name);
}void
process_media_commands(void)
{if ((actions & (A_MEDIA|A_MEDIAOPT|A_MEDIAMODE)) == 0) {/* Nothing to do. */return;}/** Media already set up, and commands sanity-checked. Set/clear* any options, and we're ready to go.*/media_current |= mediaopt_set;media_current &= ~mediaopt_clear;strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));ifr.ifr_media = media_current;if (ioctl(s, SIOCSIFMEDIA, &ifr) == -1)err(EXIT_FAILURE, "SIOCSIFMEDIA");
}void
setmedia(const char *val, int d)
{int type, subtype, inst;init_current_media();/* Only one media command may be given. */if (actions & A_MEDIA)errx(EXIT_FAILURE, "only one `media' command may be issued");/* Must not come after mode commands */if (actions & A_MEDIAMODE)errx(EXIT_FAILURE,"may not issue `media' after `mode' commands");/* Must not come after mediaopt commands */if (actions & A_MEDIAOPT)errx(EXIT_FAILURE,"may not issue `media' after `mediaopt' commands");/** No need to check if `instance' has been issued; setmediainst()* craps out if `media' has not been specified.*/type = IFM_TYPE(media_current);inst = IFM_INST(media_current);/* Look up the subtype. */subtype = get_media_subtype(type, val);if (subtype == -1)media_error(type, val, "subtype");/* Build the new current media word. */media_current = IFM_MAKEWORD(type, subtype, 0, inst);/* Media will be set after other processing is complete. */
}void
setmediaopt(const char *val, int d)
{char *invalid;init_current_media();/* Can only issue `mediaopt' once. */if (actions & A_MEDIAOPTSET)errx(EXIT_FAILURE, "only one `mediaopt' command may be issued");/* Can't issue `mediaopt' if `instance' has already been issued. */if (actions & A_MEDIAINST)errx(EXIT_FAILURE, "may not issue `mediaopt' after `instance'");mediaopt_set = get_media_options(media_current, val, &invalid);if (mediaopt_set == -1)media_error(media_current, invalid, "option");/* Media will be set after other processing is complete. */
}void
unsetmediaopt(const char *val, int d)
{char *invalid;init_current_media();/* Can only issue `-mediaopt' once. */if (actions & A_MEDIAOPTCLR)errx(EXIT_FAILURE,"only one `-mediaopt' command may be issued");/* May not issue `media' and `-mediaopt'. */if (actions & A_MEDIA)errx(EXIT_FAILURE,"may not issue both `media' and `-mediaopt'");/** No need to check for A_MEDIAINST, since the test for A_MEDIA* implicitly checks for A_MEDIAINST.*/mediaopt_clear = get_media_options(media_current, val, &invalid);if (mediaopt_clear == -1)media_error(media_current, invalid, "option");/* Media will be set after other processing is complete. */
}void
setmediainst(const char *val, int d)
{int type, subtype, options, inst;init_current_media();/* Can only issue `instance' once. */if (actions & A_MEDIAINST)errx(EXIT_FAILURE, "only one `instance' command may be issued");/* Must have already specified `media' */if ((actions & A_MEDIA) == 0)errx(EXIT_FAILURE, "must specify `media' before `instance'");type = IFM_TYPE(media_current);subtype = IFM_SUBTYPE(media_current);options = IFM_OPTIONS(media_current);inst = atoi(val);if (inst < 0 || inst > IFM_INST_MAX)errx(EXIT_FAILURE, "invalid media instance: %s", val);media_current = IFM_MAKEWORD(type, subtype, options, inst);/* Media will be set after other processing is complete. */
}void
setmediamode(const char *val, int d)
{int type, subtype, options, inst, mode;init_current_media();/* Can only issue `mode' once. */if (actions & A_MEDIAMODE)errx(EXIT_FAILURE, "only one `mode' command may be issued");type = IFM_TYPE(media_current);subtype = IFM_SUBTYPE(media_current);options = IFM_OPTIONS(media_current);inst = IFM_INST(media_current);mode = get_media_mode(type, val);if (mode == -1)media_error(type, val, "mode");media_current = IFM_MAKEWORD(type, subtype, options, inst) | mode;/* Media will be set after other processing is complete. */
}void
print_media_word(int ifmw, const char *opt_sep)
{const char *str;printf("%s", get_media_subtype_string(ifmw));/* Find mode. */if (IFM_MODE(ifmw) != 0) {str = get_media_mode_string(ifmw);if (str != NULL)printf(" mode %s", str);}/* Find options. */for (; (str = get_media_option_string(&ifmw)) != NULL; opt_sep = ",")printf("%s%s", opt_sep, str);if (IFM_INST(ifmw) != 0)printf(" instance %d", IFM_INST(ifmw));
}int
carrier(void)
{struct ifmediareq ifmr;(void) memset(&ifmr, 0, sizeof(ifmr));(void) strncpy(ifmr.ifm_name, name, sizeof(ifmr.ifm_name));if (ioctl(s, SIOCGIFMEDIA, &ifmr) == -1) {/** Interface doesn't support SIOC{G,S}IFMEDIA;* assume ok.*/return 0;}if ((ifmr.ifm_status & IFM_AVALID) == 0) {/** Interface doesn't report media-valid status.* assume ok.*/return 0;}/* otherwise, return ok for active, not-ok if not active. */return !(ifmr.ifm_status & IFM_ACTIVE);
}const int ifm_status_valid_list[] = IFM_STATUS_VALID_LIST;const struct ifmedia_status_description ifm_status_descriptions[] =IFM_STATUS_DESCRIPTIONS;/** Print the status of the interface. If an address family was* specified, show it and it only; otherwise, show them all.*/
void
status(const struct sockaddr_dl *sdl)
{const struct afswtch *p = afp;struct ifmediareq ifmr;struct ifdatareq ifdr;int *media_list, i;char hbuf[NI_MAXHOST];char fbuf[BUFSIZ];(void)snprintb(fbuf, sizeof(fbuf), IFFBITS, flags);printf("%s: flags=%s", name, &fbuf[2]);if (metric)printf(" metric %lu", metric);if (mtu)printf(" mtu %lu", mtu);printf("\n");if (g_ifcr.ifcr_capabilities) {(void)snprintb(fbuf, sizeof(fbuf), IFCAPBITS,g_ifcr.ifcr_capabilities);printf("\tcapabilities=%s\n", &fbuf[2]);(void)snprintb(fbuf, sizeof(fbuf), IFCAPBITS,g_ifcr.ifcr_capenable);printf("\tenabled=%s\n", &fbuf[2]);}ieee80211_status();vlan_status();tunnel_status();agr_status();if (sdl != NULL &&getnameinfo((const struct sockaddr *)sdl, sdl->sdl_len,hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) == 0 &&hbuf[0] != '\0')printf("\taddress: %s\n", hbuf);(void) memset(&ifmr, 0, sizeof(ifmr));(void) strncpy(ifmr.ifm_name, name, sizeof(ifmr.ifm_name));if (ioctl(s, SIOCGIFMEDIA, &ifmr) == -1) {/** Interface doesn't support SIOC{G,S}IFMEDIA.*/goto iface_stats;}if (ifmr.ifm_count == 0) {warnx("%s: no media types?", name);goto iface_stats;}media_list = (int *)malloc(ifmr.ifm_count * sizeof(int));if (media_list == NULL)err(EXIT_FAILURE, "malloc");ifmr.ifm_ulist = media_list;if (ioctl(s, SIOCGIFMEDIA, &ifmr) == -1)err(EXIT_FAILURE, "SIOCGIFMEDIA");printf("\tmedia: %s ", get_media_type_string(ifmr.ifm_current));print_media_word(ifmr.ifm_current, " ");if (ifmr.ifm_active != ifmr.ifm_current) {printf(" (");print_media_word(ifmr.ifm_active, " ");printf(")");}printf("\n");if (ifmr.ifm_status & IFM_STATUS_VALID) {const struct ifmedia_status_description *ifms;int bitno, found = 0;printf("\tstatus: ");for (bitno = 0; ifm_status_valid_list[bitno] != 0; bitno++) {for (ifms = ifm_status_descriptions;ifms->ifms_valid != 0; ifms++) {if (ifms->ifms_type !=IFM_TYPE(ifmr.ifm_current) ||ifms->ifms_valid !=ifm_status_valid_list[bitno])continue;printf("%s%s", found ? ", " : "",IFM_STATUS_DESC(ifms, ifmr.ifm_status));found = 1;/** For each valid indicator bit, there's* only one entry for each media type, so* terminate the inner loop now.*/break;}}if (found == 0)printf("unknown");printf("\n");}if (mflag) {int type, printed_type;for (type = IFM_NMIN; type <= IFM_NMAX; type += IFM_NMIN) {for (i = 0, printed_type = 0; i < ifmr.ifm_count; i++) {if (IFM_TYPE(media_list[i]) != type)continue;if (printed_type == 0) {printf("\tsupported %s media:\n",get_media_type_string(type));printed_type = 1;}printf("\t\tmedia ");print_media_word(media_list[i], " mediaopt ");printf("\n");}}}free(media_list);iface_stats:if (!vflag && !zflag)goto proto_status;(void) strncpy(ifdr.ifdr_name, name, sizeof(ifdr.ifdr_name));if (ioctl(s, zflag ? SIOCZIFDATA:SIOCGIFDATA, &ifdr) == -1) {err(EXIT_FAILURE, zflag ? "SIOCZIFDATA" : "SIOCGIFDATA");} else {struct if_data * const ifi = &ifdr.ifdr_data;char buf[5];#define PLURAL(n) ((n) == 1 ? "" : "s")
#define PLURALSTR(s) ((atof(s)) == 1.0 ? "" : "s")printf("\tinput: %llu packet%s, ", (unsigned long long) ifi->ifi_ipackets,PLURAL(ifi->ifi_ipackets));if (hflag) {(void) humanize_number(buf, sizeof(buf),(int64_t) ifi->ifi_ibytes, "", HN_AUTOSCALE, HN_NOSPACE | HN_DECIMAL);printf("%s byte%s", buf,PLURALSTR(buf));} elseprintf("%llu byte%s",(unsigned long long) ifi->ifi_ibytes,PLURAL(ifi->ifi_ibytes));if (ifi->ifi_imcasts)printf(", %llu multicast%s",(unsigned long long) ifi->ifi_imcasts,PLURAL(ifi->ifi_imcasts));if (ifi->ifi_ierrors)printf(", %llu error%s",(unsigned long long) ifi->ifi_ierrors,PLURAL(ifi->ifi_ierrors));if (ifi->ifi_iqdrops)printf(", %llu queue drop%s",(unsigned long long) ifi->ifi_iqdrops,PLURAL(ifi->ifi_iqdrops));if (ifi->ifi_noproto)printf(", %llu unknown protocol",(unsigned long long) ifi->ifi_noproto);printf("\n\toutput: %llu packet%s, ",(unsigned long long) ifi->ifi_opackets,PLURAL(ifi->ifi_opackets));if (hflag) {(void) humanize_number(buf, sizeof(buf),(int64_t) ifi->ifi_obytes, "", HN_AUTOSCALE,HN_NOSPACE | HN_DECIMAL);printf("%s byte%s", buf,PLURALSTR(buf));} elseprintf("%llu byte%s",(unsigned long long) ifi->ifi_obytes,PLURAL(ifi->ifi_obytes));if (ifi->ifi_omcasts)printf(", %llu multicast%s",(unsigned long long) ifi->ifi_omcasts,PLURAL(ifi->ifi_omcasts));if (ifi->ifi_oerrors)printf(", %llu error%s",(unsigned long long) ifi->ifi_oerrors,PLURAL(ifi->ifi_oerrors));if (ifi->ifi_collisions)printf(", %llu collision%s",(unsigned long long) ifi->ifi_collisions,PLURAL(ifi->ifi_collisions));printf("\n");
#undef PLURAL
#undef PLURALSTR}ieee80211_statistics();proto_status:if ((p = afp) != NULL) {(*p->af_status)(1);} else for (p = afs; p->af_name; p++) {ifr.ifr_addr.sa_family = p->af_af;(*p->af_status)(0);}
}void
setifprefixlen(const char *addr, int d)
{if (*afp->af_getprefix)(*afp->af_getprefix)(addr, MASK);explicit_prefix = 1;
}void
usage(void)
{const char *progname = getprogname();fprintf(stderr,"usage: %s [-h] [-m] [-v] [-z] "
#ifdef INET6"[-L] "
#endif"interface\n""\t[ af [ address [ dest_addr ] ] [ netmask mask ] [ prefixlen n ]\n""\t\t[ alias | -alias ] ]\n""\t[ up ] [ down ] [ metric n ] [ mtu n ]\n""\t[ nwid network_id ] [ nwkey network_key | -nwkey ]\n""\t[ powersave | -powersave ] [ powersavesleep duration ]\n""\t[ [ af ] tunnel src_addr dest_addr ] [ deletetunnel ]\n""\t[ arp | -arp ]\n""\t[ media type ] [ mediaopt opts ] [ -mediaopt opts ] ""[ instance minst ]\n""\t[ vlan n vlanif i ]\n""\t[ agrport i ] [ -agrport i ]\n""\t[ anycast | -anycast ] [ deprecated | -deprecated ]\n""\t[ tentative | -tentative ] [ pltime n ] [ vltime n ] [ eui64 ]\n""\t[ link0 | -link0 ] [ link1 | -link1 ] [ link2 | -link2 ]\n"" %s -a [-b] [-h] [-m] [-d] [-u] [-v] [-z] [ af ]\n"" %s -l [-b] [-d] [-u] [-s]\n"" %s -C\n"" %s interface create\n"" %s interface destroy\n",progname, progname, progname, progname, progname, progname);exit(1);
}
ifconfig源代码-NetBSD相关推荐
- NetBSD Make源代码阅读二：链表之创建与销毁
1.创建链表 /*-*-----------------------------------------------------------------------* Lst_Init --* 创建并 ...
- PostgreSQL服务器管理：从源代码安装
本文档为PostgreSQL 9.6.0文档,本转载已得到原译者彭煜玮授权. 1. 简单版 ./configure make su make install adduser postgres mkdi ...
- netbsd桌面笔记
前言:之前完成了FreeBSD和OpenBSD的桌面笔记,今天心血来潮,就把NetBSD的桌面笔记也一并完成,这样,三大BSD的桌面化教程算是全部完成了.作为个人认为三大BSD中最难用的NetBSD, ...
- netbsd apache php mysql_NetBSD2.0下架设入门级www服务器
NetBSD2.0下架设入门级www服务器 作者:佚名 编辑:李莲 2007-08-28 00:00 评论 分享 先说点废话: 俗话说新猪上任三把火,总要烧烧的,今天我也火上浇油一把.关于写本文的目的 ...
- 基于 linux 平台的 libpcap 源代码分析
libpcap 是 unix/linux 平台下的网络数据包捕获函数包,大多数网络监控软件都以它为基础.Libpcap 可以在绝大多数类 unix 平台下工作,本文分析了 libpcap 在 linu ...
- libpcap 源代码分析（二）
网络监控 绝大多数的现代操作系统都提供了对底层网络数据包捕获的机制,在捕获机制之上可以建立网络监控(Network Monitoring)应用软件.网络监控也常简称为sniffer,其最初的目的在于对 ...
- 试试Linux下的ip命令，ifconfig已经过时了
linux的ip命令和ifconfig类似,但前者功能更强大,并旨在取代后者.使用ip命令,只需一个命令,你就能很轻松地执行一些网络管理任务.ifconfig是net-tools中已被废弃使用的一个命 ...
- 【AWSL】之Linux源代码编译及配置yum源（tar 解包、./configure配置软件模块、make）
源代码编译 序言 一.源代码概述 1.使用源代码安装软件的优点 2.应用场合举例 3.安装源代码软件为什么使用编译安装 二.编译安装的基本思路 三.配置本地yum源仓库 四.`yum常用命令` 五.` ...
- android源代码
1.把eclipse工程配置文件复制到android源码根目录下 Linux下面:cp development/ide/eclipse/.classpath ./ xp下面:直接把eclipse.in ...
最新文章
- vue-concise-slider vue滑动组件
- 生物界地震，AlphaFold破解50年重大挑战，AI+X将迎来新时代
- MEMS为何独领风骚？看完这篇秒懂！
- hust1341(模拟)
- 微信小程序和vue双向绑定哪里不一样_个人理解Vue和React区别
- IEnumerable
- 给大家介绍一个日期输入控件javascript实现，我修改了下，符合我的习惯了，^_^！...
- 如何在Python中显式释放内存？
- go去掉最后一个字符_可维护的Go代码程序指南(一)之变量篇
- 基于JAVA+SpringBoot+Mybatis+MYSQL的停车场管理系统
- Python 进阶 —— defaultdict
- 开头的单词_为什么U开头的单词前面有时加a，有时加an----高考语法知识运用
- 华为数通笔记-VRP
- 武大女硕士面试被拒,改简历冒充本科生找工作的感想（原创）
- 只有韦小宝最适合当产品经理
- 苹果春季发布会前瞻:全新 iPhone SE 3 将揭晓，M2芯片来袭？
- 高阶函数：如何使用过滤器，映射和约简以获得更可维护的代码
- JAVA设计模式之访问者模式
- HTTP - get/post请求详解与本质区别总结
- 渗透之——使用Metasploit实现对缓冲区栈的溢出攻击