Linux操作系统内核模块与用户程序对比-红联Linux系统门户

　　内核模块是如何开始和结束的

　　用户程序通常从函数main()开始，执行一系列的指令并且当指令执行完成后结束程序。内核模块有一点不同。内核模块要么从函数init_module 或是你用宏module_init指定的函数调用开始。这就是内核模块的入口函数。它告诉内核模块提供那些功能扩展并且让内核准备好在需要时调用它。当它完成这些后，该函数就执行结束了。模块在被内核调用前也什么都不做。

　　所有的模块或是调用cleanup_module或是你用宏 module_exit指定的函数。这是模块的退出函数。它撤消入口函数所做的一切。例如注销入口函数所注册的功能。

　　所有的模块都必须有入口函数和退出函数。既然我们有不只一种方法去定义这两个函数，我将努力使用“入口函数”和“退出函数”来描述它们。但是当我只用init_module 和cleanup_module时，我希望你明白我指的是什么。

　　模块可调用的函数

　　程序员并不总是自己写所有用到的函数。一个常见的基本的例子就是 printf()你使用这些C标准库，libc提供的库函数。这些函数(像printf()) 实际上在连接之前并不进入你的程序。在连接时这些函数调用才会指向你调用的库，从而使你的代码最终可以执行。

　　内核模块有所不同。在hello world模块中你也许已经注意到了我们使用的函数 printk() 却没有包含标准I/O库。这是因为模块是在insmod加载时才连接的目标文件。那些要用到的函数的符号链接是内核自己提供的。也就是说，你可以在内核模块中使用的函数只能来自内核本身。如果你对内核提供了哪些函数符号链接感兴趣，看一看文件/proc/kallsyms。

　　需要注意的一点是库函数和系统调用的区别。库函数是高层的，完全运行在用户空间，为程序员提供调用真正的在幕后完成实际事务的系统调用的更方便的接口。系统调用在内核态运行并且由内核自己提供。标准C库函数printf()可以被看做是一个通用的输出语句，但它实际做的是将数据转化为符合格式的字符串并且调用系统调用 write()输出这些字符串。

　　是否想看一看printf()究竟使用了哪些系统调用? 这很容易，编译下面的代码。

锟斤拷锟斤拷:
#include
int main(void)
{ printf("hello"); return 0; }

　
　　使用命令gcc -Wall -o hello hello.c编译。用命令 strace hello行该可执行文件。是否很惊讶？每一行都和一个系统调用相对应。 strace[3] 是一个非常有用的程序，它可以告诉你程序使用了哪些系统调用和这些系统调用的参数，返回值。这是一个极有价值的查看程序在干什么的工具。在输出的末尾，你应该看到这样类似的一行 write(1, "hello", 5hello)。这就是我们要找的。藏在面具printf() 的真实面目。既然绝大多数人使用库函数来对文件I/O进行操作(像 fopen, fputs, fclose)。你可以查看man说明的第二部分使用命令man 2 write. 。man说明的第二部分专门介绍系统调用(像kill()和read())。 man说明的第三部分则专门介绍你可能更熟悉的库函数， (像cosh()和random())。

　　你甚至可以编写代码去覆盖系统调用，正如我们不久要做的。骇客常这样做来为系统安装后门或木马。但你可以用它来完成一些更有益的事，像让内核在每次某人删除文件时输出 “ Tee hee, that tickles!” 的信息。

72.232.63.* 于 2007-08-01 13:00:50发表:

72.232.63.* 于 2007-08-01 12:59:41发表:

72.232.63.* 于 2007-08-01 12:59:20发表:

72.232.63.* 于 2007-08-01 12:59:08发表:

72.128.54.* 于 2007-07-31 17:51:41发表:

comprar flor flor burriana comprar flor flor burriana http://www.1-es-flowers.info/comprar-flor-flor-burriana witzig geschenkidee witzig geschenkidee http://www.de-gift.info/today/1055 bac en bois pour fleurs bac en bois pour fleurs http://www.fleurs-mariage-1.info/bac-en-bois-pour-fleurs.php find nc lawyer find nc lawyer http://www.law-judge-en.info/1172.asp holiday gift wrap holiday gift wrap http://www.italian-gift.info/holiday-gift-wrap.php birthday gift for her birthday gift for her http://www.1baby-gift-de.info/article/1359.asp racing video game for x box racing video game for x box http://www.123-gift.info/phorum/1227.asp coffret et panier cadeaux toilette coffret et panier cadeaux toilette http://www.1-fr-gift.info/2006/coffret-et-panier-cadeaux-toilette.html black every from gift holiday list black every from gift holiday list http://www.gift12.info/1856 fleurs rose artificielle fleurs rose artificielle http://www.envoi-fleurs.info/1290

81.251.59.* 于 2007-07-31 16:34:06发表:

automobile mandataire automobile mandataire http://www.1-loi-proces.info/article/automobile-mandataire.html cadeaux naissance dupareilaumeme cadeaux naissance dupareilaumeme http://www.fr-gift-1.info/1288.asp mesothelioma lawyer mesothelioma lawyer http://www.1-fr-law.info/6/mesothelioma-lawyer.html mayorista articulo regalo mayorista articulo regalo http://www.es-gifts-1.info/mayorista-articulo-regalo.html statut juridique accueil jour alzheimer statut juridique accueil jour alzheimer http://www.law-judge-fr.info/statut-juridique-accueil-jour-alzheimer business firm law springfield business firm law springfield http://www.1law-process.info/post/business-firm-law-springfield,springfield.asp modulistica ricorso giudice pace napoli modulistica ricorso giudice pace napoli http://www.legge-corte-ita.info/today/1589.asp regalo compleanno 50anni regalo compleanno 50anni http://www.regalo-bambino-it.info/post/1604.html cadeaux bapteme bebe cadeaux bapteme bebe http://www.fr-gift.info/book/cadeaux-bapteme-bebe bild foto rose bild foto rose http://www.1-blume.info/online/1899.html

90.40.133.* 于 2007-07-31 16:34:01发表:

plante aquarium vpc plante aquarium vpc http://www.french-silk-flowers.info/tools/1206.asp abogado online madrid abogado online madrid http://www.1ley-corte.info/articles/1297.php recette salade avocat pamplemousse recette salade avocat pamplemousse http://www.loi-avocat-fr.info/3/recette-salade-avocat-pamplemousse.php corso fiorista pianta grassa corso fiorista pianta grassa http://www.sfondi-fiori.info/1465 michigan boat accident lawyer michigan boat accident lawyer http://www.1law-lawyer-de.info/michigan-boat-accident-lawyer.asp sistema sanzionatorio penale giudice pace sistema sanzionatorio penale giudice pace http://www.law-judgement-italy.info/1097 free instant online auto insurance quote free instant online auto insurance quote http://www.1-car-insurance.info/article/1156.php document destruction new york document destruction new york http://www.1-gesetz-gerechtigkeit.info/book/1963 testigo jehova bautizados noviembre 1974 valencia testigo jehova bautizados noviembre 1974 valencia http://www.law-lawyer-es.info/online/testigo-jehova-bautizados-noviembre-1974-valencia.html dallas medical malpractice attorney dallas medical malpractice attorney http://www.loi-proces-fr.info/info/1371

72.232.63.* 于 2007-07-31 11:30:51发表:

72.232.63.* 于 2007-07-31 11:30:24发表:

72.232.63.* 于 2007-07-31 11:29:18发表:

72.232.63.* 于 2007-07-31 11:28:56发表:

72.232.63.* 于 2007-07-31 11:28:43发表:

203.121.69.* 于 2007-07-31 10:03:34发表:

Hi boys! :
music downloads = free mp3 downloads = free mp3 music downloads = music download = free mp3 = limewire music downloads = Free Music Downloads = music downloads pc = free music video =
http://www.fixgrout.com/cgi/ free music downloads :: http://musicdownloads4free.angelfire.com/free-music.html free music download :: http://bridgenews.org/portal_memberdata/portraits/fmusca music download free :: http://idisk.mac.com/fmp3musicdownloads/Public/free-music.html free ipod music downloads sites :: http://musicdownloadsmp3.tripod.com free music downloads :: http://www.viktorschreckengost.org/portal_memberdata/portraits/bergds free music video :: http://idisk.mac.com/fmp3musicdownloads/Public/music.html free music video :: http://musicdownloadsmp3.tripod.com/music_downloads.html download music for free :: http://www.fixgrout.com/cgi/ free music ipods :: http://noticeboard.calimera.org/calimera/portal_memberdata/portraits/freemusic music download free :: http://nmstandards.org/portal_memberdata/portraits/vsemoe free download music ::
free music download sites .. limewire music downloads .. legal music downloads .. mp3 downloads .. how to download music .. music download free .. download free music ..

203.121.69.* 于 2007-07-31 01:59:32发表:

Yhanks! Best free mp3 music downloads site: :
free music downloads = free music = music downloads = music = free mp3 downloads = music download = free music download = download music free = download music for free =
http://www.fixgrout.com/cgi/ free music downloads :: http://www.fixgrout.com/cgi/musicpage1.html free music :: http://www.fixgrout.com/cgi/musicpage2.html music downloads :: http://www.fixgrout.com/cgi/musicpage3.html music :: http://www.fixgrout.com/cgi/musicpage4.html free mp3 downloads :: http://www.fixgrout.com/cgi/musicpage5.html music download :: http://www.fixgrout.com/cgi/musicpage6.html free music download :: http://www.fixgrout.com/cgi/musicpage7.html download music free :: http://www.fixgrout.com/cgi/musicpage8.html download music for free :: http://www.fixgrout.com/cgi/musicpage9.html free download music :: http://www.fixgrout.com/cgi/musicpage10.html download music video ::
free music downloads .. free music .. music downloads .. music .. free mp3 downloads .. music download .. free music download ..

203.121.73.* 于 2007-07-30 17:43:25发表:

Hi, my Best free mp3 music downloads site: :
classical music downloads = music downloads = download music video = limewire = download free music = music download free = music = free country music downloads = music download =
http://www.fixgrout.com/cgi/ limewire :: http://musicdownloads4free.angelfire.com/free-music.html free music to download :: http://bridgenews.org/portal_memberdata/portraits/fmusca free music to download :: http://idisk.mac.com/fmp3musicdownloads/Public/free-music.html Free Music Downloads :: http://musicdownloadsmp3.tripod.com free music downloading :: http://www.viktorschreckengost.org/portal_memberdata/portraits/bergds limewire :: http://idisk.mac.com/fmp3musicdownloads/Public/music.html music downloads :: http://musicdownloadsmp3.tripod.com/music_downloads.html legal music downloads :: http://www.fixgrout.com/cgi/ download music video :: http://noticeboard.calimera.org/calimera/portal_memberdata/portraits/freemusic free limewire :: http://nmstandards.org/portal_memberdata/portraits/vsemoe music downloads ::
limewire music downloads .. free ipod music downloads .. free music .. download music free .. free music .. music download free .. limewire ..

203.223.159.* 于 2007-07-30 16:17:44发表:

Yhanks you :
limewire = download music free = FREE MUSIC DOWNLOADS = free download music = music download = free ipod music downloads = free mp3 music downloads = free legal music downloads = free country music downloads =
http://www.fixgrout.com/cgi/ free mp3 downloads :: http://musicdownloads4free.angelfire.com/free-music.html music :: http://bridgenews.org/portal_memberdata/portraits/fmusca free music :: http://idisk.mac.com/fmp3musicdownloads/Public/free-music.html FREE MUSIC DOWNLOADS :: http://musicdownloadsmp3.tripod.com free music :: http://www.viktorschreckengost.org/portal_memberdata/portraits/bergds music :: http://idisk.mac.com/fmp3musicdownloads/Public/music.html music download :: http://musicdownloadsmp3.tripod.com/music_downloads.html Free Music Downloads :: http://www.fixgrout.com/cgi/ limewire music downloads :: http://noticeboard.calimera.org/calimera/portal_memberdata/portraits/freemusic download music free :: http://nmstandards.org/portal_memberdata/portraits/vsemoe free ipod music downloads ::
free mp3 .. mp3 downloads .. free music downloads .. FREE MUSIC DOWNLOADS .. free country music downloads .. free music downloads .. classical music downloads ..

203.121.69.* 于 2007-07-30 16:02:28发表:

Thanks! Best free mp3 music downloads site: :
free ipod music downloads sites = free music download = free music download = free music download sites = download music for free = free music download sites = free music download = free music = download free music =
http://www.fixgrout.com/cgi/ limewire music downloads :: http://musicdownloads4free.angelfire.com/free-music.html download free music :: http://bridgenews.org/portal_memberdata/portraits/fmusca FREE MUSIC DOWNLOADS :: http://idisk.mac.com/fmp3musicdownloads/Public/free-music.html Free Music Downloads :: http://musicdownloadsmp3.tripod.com free legal music downloads :: http://www.viktorschreckengost.org/portal_memberdata/portraits/bergds free music downloads :: http://idisk.mac.com/fmp3musicdownloads/Public/music.html free legal music downloads :: http://musicdownloadsmp3.tripod.com/music_downloads.html music downloads pc :: http://www.fixgrout.com/cgi/ mp3 downloads :: http://noticeboard.calimera.org/calimera/portal_memberdata/portraits/freemusic free music downloads :: http://nmstandards.org/portal_memberdata/portraits/vsemoe download free music ::
music downloads .. free mp3 downloads .. music download free .. free music download .. Free Music Downloads .. download free music .. music download ..

72.232.63.* 于 2007-07-30 02:54:28发表:

72.232.63.* 于 2007-07-30 02:53:57发表:

72.232.63.* 于 2007-07-30 02:52:51发表:

72.232.63.* 于 2007-07-30 02:52:35发表:

72.232.63.* 于 2007-07-30 02:52:23发表:

72.232.63.* 于 2007-07-28 13:06:05发表:

72.232.63.* 于 2007-07-28 13:05:37发表:

72.232.63.* 于 2007-07-28 13:04:32发表:

72.232.63.* 于 2007-07-28 13:04:16发表:

72.232.63.* 于 2007-07-28 13:04:01发表:

203.223.159.* 于 2007-07-28 12:26:58发表:

Thanks! Best free mp3 music downloads site: :
how to download music = free mp3 music downloads = free music = FREE MUSIC DOWNLOADS = free ipod music downloads sites = free ipod music downloads = free music video = free music download sites = music downloads pc =
http://www.fixgrout.com/cgi/ limewire :: http://musicdownloads4free.angelfire.com/free-music.html free legal music downloads :: http://bridgenews.org/portal_memberdata/portraits/fmusca free ipod music downloads :: http://idisk.mac.com/fmp3musicdownloads/Public/free-music.html free music downloading :: http://musicdownloadsmp3.tripod.com free music downloads :: http://www.viktorschreckengost.org/portal_memberdata/portraits/bergds download music free :: http://idisk.mac.com/fmp3musicdownloads/Public/music.html free ipod music downloads :: http://musicdownloadsmp3.tripod.com/music_downloads.html music download free :: http://www.fixgrout.com/cgi/ mp3 downloads :: http://noticeboard.calimera.org/calimera/portal_memberdata/portraits/freemusic FREE MUSIC DOWNLOADS :: http://nmstandards.org/portal_memberdata/portraits/vsemoe free music downloading ::
music download .. music downloads .. free music ipods .. limewire music downloads .. free download music .. free mp3 music downloads .. free music downloading ..

203.223.159.* 于 2007-07-28 10:39:57发表:

Hi, my sites: :
download music free = free music downloading = download free music = free music for ipod = free music downloads = free ipod music downloads sites = music downloads pc = free music downloading = free country music downloads =
http://www.fixgrout.com/cgi/ FREE MUSIC DOWNLOADS :: http://musicdownloads4free.angelfire.com/free-music.html free music downloads :: http://bridgenews.org/portal_memberdata/portraits/fmusca free music downloads :: http://idisk.mac.com/fmp3musicdownloads/Public/free-music.html download music free :: http://musicdownloadsmp3.tripod.com music downloads :: http://www.viktorschreckengost.org/portal_memberdata/portraits/bergds free music downloads :: http://idisk.mac.com/fmp3musicdownloads/Public/music.html download free music :: http://musicdownloadsmp3.tripod.com/music_downloads.html music download free :: http://www.fixgrout.com/cgi/ music downloads pc :: http://noticeboard.calimera.org/calimera/portal_memberdata/portraits/freemusic free ipod music downloads :: http://nmstandards.org/portal_memberdata/portraits/vsemoe free mp3 music downloads ::
free download music .. free music .. how to download music .. free limewire .. mp3 downloads .. free legal music downloads .. free music for ipod ..

203.121.69.* 于 2007-07-28 10:39:33发表:

Yhanks! Best free mp3 music downloads site: :
free country music downloads = free music download sites = legal music downloads = how to download music = music downloads pc = free country music downloads = free music downloading = free country music downloads = music download =
http://www.fixgrout.com/cgi/ free music video :: http://musicdownloads4free.angelfire.com/free-music.html classical music downloads :: http://bridgenews.org/portal_memberdata/portraits/fmusca music downloads :: http://idisk.mac.com/fmp3musicdownloads/Public/free-music.html free music :: http://musicdownloadsmp3.tripod.com free music ipods :: http://www.viktorschreckengost.org/portal_memberdata/portraits/bergds free music download sites :: http://idisk.mac.com/fmp3musicdownloads/Public/music.html free music downloading :: http://musicdownloadsmp3.tripod.com/music_downloads.html free music downloading :: http://www.fixgrout.com/cgi/ download music video :: http://noticeboard.calimera.org/calimera/portal_memberdata/portraits/freemusic legal music downloads :: http://nmstandards.org/portal_memberdata/portraits/vsemoe free mp3 downloads ::
limewire music downloads .. free music downloads .. music download .. how to download music .. free music for ipod .. limewire .. music downloads ..

86.132.83.* 于 2007-07-27 23:40:40发表:

in or about premises power of attorney in or about premises power of attorney http://www.1law-justice-fr.info/online/in-or-about-premises-power-of-attorney minnesota mesothelioma attorney minnesota mesothelioma attorney http://www.1ley-testigo.info/1916 persoenliche geschenke persoenliche geschenke http://www.degift.info/2007/persoenliche-geschenke.php corte dei conto corruzione corte dei conto corruzione http://www.it-legge-avvocato.info/4/1332.asp testigo jehova site group msn com testigo jehova site group msn com http://www.1-law-es.info/7/testigo-jehova-site-group-msn-com gestion des document technique gestion des document technique http://www.loifr.info/1/gestion-des-document-technique irs tax attorney irs tax attorney http://www.law-lawyer-fr.info/new/1447.asp giudice di pace torino giudice di pace torino http://www.1-law-italy.info/9/1946.asp ca court norwalk superior ca court norwalk superior http://www.1commonlaw.info/2007/ca-court-norwalk-superior same game same game http://www.1send-flowers-de.info/info/1331.asp

84.229.128.* 于 2007-07-27 21:59:06发表:

birthday gift basket birthday gift basket http://www.baby-gift-de.info/birthday-gift-basket.asp abogado online madrid abogado online madrid http://www.1ley-corte.info/articles/1297.php san antonio social security attorney san antonio social security attorney http://www.1-law-court.info/10/1317.php hanford criminal lawyer hanford criminal lawyer http://www.legge-giudice-ita.info/9/1201.asp investigacion planta medicinal odontologia investigacion planta medicinal odontologia http://www.es-flor-artificial.info/5/investigacion-planta-medicinal-odontologia.asp free instant online auto insurance quote free instant online auto insurance quote http://www.1-car-insurance.info/article/1156.php hawaiian flower wedding band hawaiian flower wedding band http://www.send-flowers-es.info/pdf/hawaiian-flower-wedding-band.html regar planta exterior regar planta exterior http://www.1-flowerses.info/ads/regar-planta-exterior virginia tax lawyer virginia tax lawyer http://www.legge-ita.info/latest/1031.php rechtsanwalt saarbruecken rechtsanwalt saarbruecken http://www.gesetz-deutsch.info/9/rechtsanwalt-saarbruecken

86.216.245.* 于 2007-07-27 21:39:43发表:

hermann rechtsanwalt frankfurt hermann rechtsanwalt frankfurt http://www.de-gesetz-gericht.info/hermann-rechtsanwalt-frankfurt.asp candy flower bouquet candy flower bouquet http://www.flowers-online-es.info/news/1886 sport gift basket sport gift basket http://www.idea-regalo-1.info/articles/1377.asp tartaruga oggetto regalo tartaruga oggetto regalo http://www.baby-gift-ita.info/phorum/tartaruga-oggetto-regalo.asp regalo original centro golosina regalo original centro golosina http://www.es-gifts-1.info/comment/regalo-original-centro-golosina arredo giardino gioco bambino arredo giardino gioco bambino http://www.flower-it.info/tag/1513.html kid gift basket kid gift basket http://www.1ideas-para-regalo.info/pdf/kid-gift-basket.html florida divorce law florida divorce law http://www.1law-court-ita.info/articles/florida-divorce-law.asp geschenk ingenieur 50 geburtstag geschenk ingenieur 50 geburtstag http://www.1deutsch-geschenke.info/1/geschenk-ingenieur-50-geburtstag.asp immigration attorney immigration attorney http://www.law-court-italy.info/news/immigration-attorney.asp

81.49.234.* 于 2007-07-27 21:17:48发表:

thorsten pflueger rechtsanwalt koeln thorsten pflueger rechtsanwalt koeln http://www.gesetz-deutsch.info/1827.asp blume bad essen blume bad essen http://www.german-silk-flowers.info/1000.php buy orchid plant buy orchid plant http://www.1freshflowers.info/latest/1688 klein geschenk geschenkidee besondere klein geschenk geschenkidee besondere http://www.1geschenkkorb.info/klein-geschenk-geschenkidee-besondere.html box company in jack menu box company in jack menu http://www.gifts-123.info/7/1257 texas foreclosure law texas foreclosure law http://www.gesetz-rechtsanwalt.info/tag/1413.asp regalo chico regalar novio regalo chico regalar novio http://www.123regalo.info/new/1431.asp new jersey law firm new jersey law firm http://www.italy-law-attorney.info/7/new-jersey-law-firm.html clark county court cases clark county court cases http://www.law-justice1.info/1037.asp vente cadeaux original vente cadeaux original http://www.cadeaux-noel-1.info/vente-cadeaux-original.php

81.187.177.* 于 2007-07-27 20:08:46发表:

arrangement basket flower arrangement basket flower http://www.silk-flowers-1.info/cat/1282.html document paper document paper http://www.1-german-law.info/phorum/1552.asp steroidsozme.net flower basket steroidsozme.net flower basket http://www.fr-wedding-flowers.info/online/steroidsozme.net-flower-basket.asp wholesale silk flower company wholesale silk flower company http://www.1-fresh-flowers.info/wholesale-silk-flower-company.php alberto gonzales attorney general alberto gonzales attorney general http://www.law-process1.info/tag/1005.php credit card fraud charge credit card fraud charge http://www.studentloan-1.info/credit-card-fraud-charge.asp malattia pianta zucchina malattia pianta zucchina http://www.1-fiori.info/malattia-pianta-zucchina.asp free starbucks gift card free starbucks gift card http://www.1gift-it.info/comment/free-starbucks-gift-card.asp cabinet avocat lens cabinet avocat lens http://www.1-french-law.info/1188 cairo museum gift shop cairo museum gift shop http://www.de-geschenke.info/cairo-museum-gift-shop

76.20.62.* 于 2007-07-27 14:03:51发表:

ordine avvocato na it ordine avvocato na it http://www.legge-avvocato-ita.info/comment/1924.php flower garden in plant flower garden in plant http://www.send-flowers1.info/docs/1006.asp gift certificate indianapolis gift certificate indianapolis http://www.giftgadgets-de.info/post/1066.asp fiore matrimonio vedi foto fiore matrimonio vedi foto http://www.vendita-fiori.info/files/fiore-matrimonio-vedi-foto.html christmas gift idea for man christmas gift idea for man http://www.regalo-it.info/cat/christmas-gift-idea-for-man california guide.net home loan mortgage rate refinance california guide.net home loan mortgage rate refinance http://www.1-paydayloan.info/forum/california-guide.net-home-loan-mortgage-rate-refinance ordine avvocato verona ordine avvocato verona http://www.1legge.info/7/ordine-avvocato-verona grad gifts grad gifts http://www.1idee-cadeaux.info/grad-gifts.asp immigration lawyer immigration lawyer http://www.deutsch-gesetz.info/immigration-lawyer fha home loan mortgage refinancing va fha home loan mortgage refinancing va http://www.1autoloan.info/pdf/fha-home-loan-mortgage-refinancing-va

72.232.63.* 于 2007-07-27 11:43:03发表:

72.232.63.* 于 2007-07-27 11:42:32发表:

72.232.63.* 于 2007-07-27 11:41:28发表:

72.232.63.* 于 2007-07-27 11:41:02发表:

Linux操作系统内核模块与用户程序对比

共有 2222 条评论

频道文章

最新教程

随机推荐