{"id":3357,"date":"2017-06-16T23:53:53","date_gmt":"2017-06-16T15:53:53","guid":{"rendered":"https:\/\/ixyzero.com\/blog\/?p=3357"},"modified":"2017-06-16T23:53:53","modified_gmt":"2017-06-16T15:53:53","slug":"linux%e5%86%85%e6%a0%b8%e6%a8%a1%e5%9d%97%e7%bc%96%e7%a8%8b%e5%ad%a6%e4%b9%a0","status":"publish","type":"post","link":"https:\/\/ixyzero.com\/blog\/archives\/3357.html","title":{"rendered":"Linux\u5185\u6838\u6a21\u5757\u7f16\u7a0b\u5b66\u4e60"},"content":{"rendered":"

=Start=<\/p>\n

\u7f18\u7531\uff1a<\/h4>\n

\u5b66\u4e60\u9700\u8981<\/p>\n

\u6b63\u6587\uff1a<\/h4>\n

\u53c2\u8003\u89e3\u7b54\uff1a<\/h5>\n
1.\u4ec0\u4e48\u662f\u5185\u6838\u6a21\u5757\uff1f<\/h6>\n

\u7b80\u5355\u70b9\u7684\u89e3\u91ca<\/strong>\uff1a\u4e00\u6bb5\u53ef\u4ee5\u52a8\u6001\u52a0\u8f7d\u8fdb\u5185\u6838\u7684\u4ee3\u7801<\/span>\u3002
\n\u590d\u6742\u70b9\u7684\u89e3\u91ca<\/strong>\uff1a\u5185\u6838\u6a21\u5757\u662f\u4e00\u4e9b\u53ef\u4ee5\u8ba9\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u5728\u9700\u8981\u65f6\u8f7d\u5165\u548c\u6267\u884c\u7684\u4ee3\u7801<\/strong><\/span>\uff0c\u8fd9\u540c\u6837\u610f\u5473\u7740\u5b83\u53ef\u4ee5\u5728\u4e0d\u9700\u8981\u65f6\u7531\u64cd\u4f5c\u7cfb\u7edf\u5378\u8f7d\u3002\u5b83\u4eec\u6269\u5c55\u4e86\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u7684\u529f\u80fd\u5374\u4e0d\u9700\u8981\u91cd\u65b0\u542f\u52a8\u7cfb\u7edf\u3002\u4e3e\u4f8b\u6765\u8bf4\uff0c\u5176\u4e2d\u4e00\u4e2a\u5185\u6838\u6a21\u5757\u662f\u8bbe\u5907\u9a71\u52a8\u7a0b\u5e8f\u6a21\u5757\uff0c\u5b83\u4eec\u7528\u6765\u8ba9\u64cd\u4f5c\u7cfb\u7edf\u6b63\u786e\u8bc6\u522b\uff0c\u4f7f\u7528\u5b89\u88c5\u5728\u7cfb\u7edf\u4e0a\u7684\u786c\u4ef6\u8bbe\u5907\u3002\u5982\u679c\u6ca1\u6709\u5185\u6838\u6a21\u5757(\u7684\u673a\u5236)\uff0c\u6211\u4eec\u4e0d\u5f97\u4e0d\u4e00\u6b21\u53c8\u4e00\u6b21\u91cd\u65b0\u7f16\u8bd1\u751f\u6210\u5355\u5185\u6838\u64cd\u4f5c\u7cfb\u7edf\u7684\u5185\u6838\u955c\u50cf\u6765\u52a0\u5165\u65b0\u7684\u529f\u80fd\u3002\u9664\u6b64\u4e4b\u5916\uff0c\u8fd9\u8fd8\u610f\u5473\u7740\u4e00\u4e2a\u81c3\u80bf\u7684\u5185\u6838\u3002<\/p>\n

\u6a21\u5757\u662f\u5177\u6709\u72ec\u7acb\u529f\u80fd\u7684\u7a0b\u5e8f\uff0c\u5b83\u53ef\u4ee5\u88ab\u5355\u72ec\u7f16\u8bd1\uff0c\u4f46\u4e0d\u80fd\u72ec\u7acb\u8fd0\u884c\u3002<\/span><\/strong>\u5b83\u5728\u8fd0\u884c\u65f6\u88ab\u63d2\u5165\u5230\u5185\u6838\u4f5c\u4e3a\u5185\u6838\u7684\u4e00\u90e8\u5206\u5728\u5185\u6838\u7a7a\u95f4\u8fd0\u884c\uff0c\u8fd9\u4e0e\u8fd0\u884c\u5728\u7528\u6237\u7a7a\u95f4\u7684\u8fdb\u7a0b\u662f\u4e0d\u540c\u7684\u3002<\/span>\u6a21\u5757\u901a\u5e38\u7531\u4e00\u7ec4\u51fd\u6570\u548c\u6570\u636e\u7ed3\u6784\u7ec4\u6210\uff0c\u7528\u6765\u5b9e\u73b0\u4e00\u79cd\u6587\u4ef6\u7cfb\u7edf\u3001\u4e00\u4e2a\u9a71\u52a8\u7a0b\u5e8f\u6216\u5176\u4ed6\u5185\u6838\u4e0a\u5c42\u7684\u529f\u80fd\u3002<\/p>\n

\u8fd9\u6837\u8bf4\u5427\uff0c\u6a21\u5757\u5c31\u662f\u6574\u4e2a\u5185\u6838\u7684\u4e00\u90e8\u5206\u3002\u4f46\u662f\u8ddfC\u7a0b\u5e8f\u4e2d\u51fd\u6570\u4e0d\u4e00\u6837\u7684\u4e00\u70b9\u662f\uff0c\u5185\u6838\u6a21\u5757\u53ef\u4ee5\u5728\u5b83\u6240\u8ba4\u4e3a\u9002\u5f53\u7684\u65f6\u5019\uff0c\u63d2\u5165\u5230\u5185\u6838\u6216\u8005\u4ece\u5185\u6838\u4e2d\u5220\u9664\uff0c\u800c\u4e14\u8fd8\u4e0d\u5f71\u54cd\u5185\u6838\u7684\u6b63\u5e38\u8fd0\u884c\u3002\u4ece\u800c\u53ef\u4ee5\u5728\u5fc5\u8981\u7684\u65f6\u5019\u5bf9\u5185\u6838\u8fdb\u884c\u88c1\u526a\uff0c\u8fd9\u6837\u80fd\u591f\u66f4\u597d\u7684\u9002\u5e94\u4e8e\u7528\u6237\u7684\u9700\u6c42\u3002<\/p>\n

2.\u5185\u6838\u6a21\u5757\u662f\u5982\u4f55\u5de5\u4f5c\u7684\uff1f<\/h6>\n

\u5185\u6838\u6a21\u5757\u662f\u5982\u4f55\u88ab\u8c03\u5165\u5185\u6838\u8fdb\u884c\u5de5\u4f5c\u7684\uff1f\u5f53\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u9700\u8981\u7684\u6269\u5c55\u529f\u80fd\u4e0d\u5b58\u5728\u65f6\uff0c\u5185\u6838\u6a21\u5757\u7ba1\u7406\u5b88\u62a4\u8fdb\u7a0bkmod\u6267\u884cmodprobe\u53bb\u52a0\u8f7d\u5185\u6838\u6a21\u5757\u3002<\/p>\n

\u5f53\u4f20\u9012\u7ed9modprobe\u662f\u901a\u7528\u8bc6\u522b\u7b26\u65f6\uff0cmodprobe\u9996\u5148\u5728\u6587\u4ef6 \/etc\/modprobe.conf(\/etc\/modprobe.d \u76ee\u5f55) \u67e5\u627e\u8be5\u5b57\u7b26\u4e32\u3002\u5982\u679c\u5b83\u53d1\u73b0\u7684\u4e00\u884c\u522b\u540d\u50cf\uff1a
\nalias char-major-10-30 softdog
\n\u5b83\u5c31\u660e\u767d\u901a\u7528\u8bc6\u522b\u7b26\u662f\u6307\u5411\u5185\u6838\u6a21\u5757softdog.ko\u3002<\/p>\n

\u7136\u540e\uff0cmodprobe\u904d\u5386\u6587\u4ef6 \/lib\/modules\/$(uname -r)\/modules.dep \u6765\u5224\u65ad\u662f\u5426\u6709\u5176\u5b83\u5185\u6838\u6a21\u5757\u9700\u8981\u5728\u8be5\u6a21\u5757\u52a0\u8f7d\u524d\u88ab\u52a0\u8f7d\u3002\u8be5\u6587\u4ef6\u662f\u7531\u547d\u4ee4$(depmod -a)\u5efa\u7acb\uff0c\u4fdd\u5b58\u7740\u5185\u6838\u6a21\u5757\u7684\u4f9d\u8d56\u5173\u7cfb\u3002<\/p>\n

\u6700\u7ec8\uff0cmodprobe\u8c03\u7528\u547d\u4ee4$(insmod)\u5148\u52a0\u8f7d\u88ab\u4f9d\u8d56\u7684\u6a21\u5757\uff0c\u7136\u540e\u52a0\u8f7d\u8be5\u88ab\u5185\u6838\u8981\u6c42\u7684\u6a21\u5757\u3002<\/p>\n

3.\u4e00\u4e2a\u7b80\u5355\u7684\u5185\u6838\u6a21\u5757\u7f16\u5199\u3001\u7f16\u8bd1\u3001\u5b89\u88c5\u3001\u5220\u9664\u8fc7\u7a0b<\/h6>\n

\/\/ C\u6e90\u6587\u4ef6<\/p>\n

\n
\n
\n
\n\n\n\n
\n
\n
\/*\u00a0<\/code><\/div>\n
\u00a0<\/code>*\u00a0 hello-1.c - The simplest kernel module.<\/code><\/div>\n
\u00a0<\/code>*\/<\/code><\/div>\n
#include <linux\/module.h>\u00a0<\/code>\/* Needed by all modules *\/<\/code><\/div>\n
#include <linux\/kernel.h>\u00a0<\/code>\/* Needed for KERN_ALERT *\/<\/code><\/div>\n
<\/div>\n
int<\/code>\u00a0init_module(<\/code>void<\/code>)<\/code><\/div>\n
{<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0<\/code>printk(KERN_ALERT\u00a0<\/code>\"Hello world 1.\\n\"<\/code>);<\/code><\/div>\n
<\/div>\n
\u00a0\u00a0\u00a0\u00a0<\/code>\/*<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>* A non 0 return means init_module failed; module can't be loaded.<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>*\/<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0<\/code>return<\/code>\u00a00<\/code>;<\/code><\/div>\n
}<\/code><\/div>\n
<\/div>\n
void<\/code>\u00a0cleanup_module(<\/code>void<\/code>)<\/code><\/div>\n
{<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0<\/code>printk(KERN_ALERT\u00a0<\/code>\"Goodbye world 1.\\n\"<\/code>);<\/code><\/div>\n
}<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

\/\/ Makefile \u6587\u4ef6<\/p>\n

\n
\n
\n
\n\n\n\n
\n
\n
obj-m += hello-<\/code>1<\/code>.o<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

\/\/ \u7f16\u8bd1<\/p>\n

\n
\n
\n
\n\n\n\n
\n
\n
make -C \/usr\/src\/kernels\/$(uname -r) SUBDIRS=$PWD modules<\/code><\/div>\n
# \u6216<\/code><\/div>\n
make -C \/lib\/modules\/$(uname -r)\/build M=$PWD modules<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

\/\/ \u5b89\u88c5<\/p>\n

\n
\n
\n
\n\n\n\n
\n
\n
# lsmod | grep --color -i\u00a0<\/code>\"hello\"<\/code><\/div>\n
# insmod .\/hello-<\/code>1<\/code>.ko<\/code><\/div>\n
# lsmod | grep --color -i\u00a0<\/code>\"hello\"<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

\/\/ \u5220\u9664<\/p>\n

\n
\n
\n
\n\n\n\n
\n
\n
rmmod hello-<\/code>1<\/code><\/div>\n
lsmod | grep --color -i\u00a0<\/code>\"hello\"<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

\/\/ \u9a8c\u8bc1<\/p>\n

\n
\n
\n
\n\n\n\n
\n
\n
# dmesg<\/code><\/div>\n
# tail -f \/var\/log\/messages<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
4.\u4e00\u4e2a\u590d\u6742\u4e00\u70b9\u7684\u5185\u6838\u6a21\u5757<\/h6>\n

\u53c2\u8003\uff1a
\nhttps:\/\/linux.cn\/article-3251-1.html?pr<\/a>
\nhttps:\/\/github.com\/vsinitsyn\/reverse<\/a><\/p>\n

5.\u5176\u5b83<\/h6>\n
\n
\n
\n
\n\n\n\n
\n
\n
\/\/ #include <linux\/init.h>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/* Needed for the macros *\/<\/code><\/div>\n
\/\/ __init \u548c module_init<\/code><\/div>\n
\/\/ __exit \u548c module_exit<\/code><\/div>\n
<\/div>\n
\/\/\u6a21\u5757\u8bb8\u53ef\u8bc1\u58f0\u660e\uff08\u5fc5\u987b\uff09<\/code><\/div>\n
MODULE_LICENSE(<\/code>\"GPL\"<\/code>);<\/code><\/div>\n
\/\/\u58f0\u660e\u6a21\u5757\u7684\u4f5c\u8005\uff08\u53ef\u9009\uff09<\/code><\/div>\n
MODULE_AUTHOR(<\/code>\"XXX\"<\/code>);<\/code><\/div>\n
\/\/\u58f0\u660e\u6a21\u5757\u7684\u63cf\u8ff0\uff08\u53ef\u9009\uff09<\/code><\/div>\n
MODULE_DESCRIPTION(<\/code>\"This is a simple example!\/n\"<\/code>);<\/code><\/div>\n
\/\/\u58f0\u660e\u6a21\u5757\u7684\u522b\u540d\uff08\u53ef\u9009\uff09<\/code><\/div>\n
MODULE_ALIAS(<\/code>\"A simplest example\"<\/code>);<\/code><\/div>\n
<\/div>\n
\/\/ \u4e00\u4e2a\u66f4\u4e3a\u5e38\u89c1\u7684Makefile\u6587\u4ef6\uff08\u4f46\u4e0d\u6e05\u695a\u4e3a\u5565\u603b\u662f\u51fa\u73b0\u300cmake: Nothing to be done for `all'.\u300d\uff09<\/code><\/div>\n
obj-m += hello.o<\/code><\/div>\n
CFLAGS_hello.o += -DDEBUG<\/code><\/div>\n
KERNEL_DIR := \/lib\/modules\/$(shell uname -r)\/build<\/code><\/div>\n
all:<\/code><\/div>\n
\u00a0\u00a0<\/code>make -C $(KERNEL_DIR) M=$(PWD) modules<\/code><\/div>\n
clean:<\/code><\/div>\n
\u00a0\u00a0<\/code>make -C $(KERNEL_DIR) M=$(PWD) clean<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
\u53c2\u8003\u94fe\u63a5\uff1a<\/h5>\n

https:\/\/github.com\/bashrc\/LKMPG<\/a>
\nhttp:\/\/www.tldp.org\/LDP\/lkmpg\/2.6\/html\/index.html<\/a>
\nhttp:\/\/www.tldp.org\/LDP\/lkmpg\/2.6\/lkmpg.pdf<\/a>
\nhttp:\/\/www.dirac.org\/linux\/writing\/lkmpg\/2.6\/chinese\/lkmpg_chs\/book1.html<\/a><\/p>\n

http:\/\/derekmolloy.ie\/writing-a-linux-kernel-module-part-1-introduction\/<\/a><\/p>\n

https:\/\/stackoverflow.com\/questions\/28631550\/linux-kernel-programming-book-for-3-x-versions<\/a>
\nhttps:\/\/kernelnewbies.org\/<\/a><\/p>\n

\u9ed1\u5ba2\u5185\u6838\uff1a\u7f16\u5199\u5c5e\u4e8e\u4f60\u7684\u7b2c\u4e00\u4e2aLinux\u5185\u6838\u6a21\u5757
\nhttps:\/\/linux.cn\/article-3251-1.html?pr<\/a>
\nhttps:\/\/github.com\/vsinitsyn\/reverse<\/a><\/p>\n

linux\u5185\u6838\u7f16\u7a0b(\u4e00)
\nhttp:\/\/blog.chinaunix.net\/uid-26281173-id-2856305.html<\/a><\/p>\n

linux\u5185\u6838\u7f16\u7a0b4\u90e8\u66f2\u4e4b\u56db\uff1a\u6a21\u5757\u7f16\u7a0b
\nhttp:\/\/blog.chinaunix.net\/uid-24782829-id-3223901.html<\/a><\/p>\n

Linux\u5185\u6838\u7f16\u7a0b\u521d\u4f53\u9a8c \u2014\u2014 hello world
\nhttp:\/\/blog.csdn.net\/chang198932\/article\/details\/17006537<\/a>
\nLinux_kernel\u7f16\u7a0b\u57fa\u7840\u603b\u7ed3
\nhttp:\/\/blog.csdn.net\/zbh19921021\/article\/details\/49019335<\/a><\/p>\n

=END=<\/p>\n","protected":false},"excerpt":{"rendered":"

=Start= \u7f18\u7531\uff1a \u5b66\u4e60\u9700\u8981 \u6b63\u6587\uff1a \u53c2\u8003\u89e3\u7b54\uff1a 1.\u4ec0\u4e48\u662f\u5185\u6838\u6a21\u5757\uff1f \u7b80\u5355\u70b9\u7684\u89e3\u91ca\uff1a\u4e00\u6bb5\u53ef\u4ee5\u52a8\u6001\u52a0\u8f7d\u8fdb\u5185 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23,11,7],"tags":[816,735,30,790,817],"class_list":["post-3357","post","type-post","status-publish","format-standard","hentry","category-knowledgebase-2","category-linux","category-programing","tag-insmod","tag-kernel","tag-linux","tag-lsmod","tag-modprobe"],"views":7415,"_links":{"self":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/posts\/3357","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/comments?post=3357"}],"version-history":[{"count":1,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/posts\/3357\/revisions"}],"predecessor-version":[{"id":3358,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/posts\/3357\/revisions\/3358"}],"wp:attachment":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/media?parent=3357"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/categories?post=3357"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/tags?post=3357"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}