{"id":198578,"date":"2024-11-14T20:26:05","date_gmt":"2024-11-14T12:26:05","guid":{"rendered":"https:\/\/server.hk\/cnblog\/198578\/"},"modified":"2024-11-14T20:26:05","modified_gmt":"2024-11-14T12:26:05","slug":"%e3%80%8c%e6%8e%a2%e7%a9%b6-linux-%e5%a1%8a%e8%a8%ad%e5%82%99%e9%a9%85%e5%8b%95%e3%80%8d-linux-%e5%a1%8a%e8%a8%ad%e5%82%99%e9%a9%85%e5%8b%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/198578\/","title":{"rendered":"\u300c\u63a2\u7a76 Linux \u584a\u8a2d\u5099\u9a45\u52d5\u300d (linux \u584a\u8a2d\u5099\u9a45\u52d5)"},"content":{"rendered":"<h1 id=\"%e6%8e%a2%e7%a9%b6-linux-%e5%a1%8a%e8%a8%ad%e5%82%99%e9%a9%85%e5%8b%95-oXmoeHDRqJ\">\u63a2\u7a76 Linux \u584a\u8a2d\u5099\u9a45\u52d5<\/h1>\n<p>\u5728 Linux \u64cd\u4f5c\u7cfb\u7d71\u4e2d\uff0c\u584a\u8a2d\u5099\u9a45\u52d5\u662f\u7ba1\u7406\u548c\u64cd\u4f5c\u584a\u8a2d\u5099\uff08\u5982\u786c\u789f\u3001SSD \u548c USB \u9a45\u52d5\u5668\uff09\u7684\u6838\u5fc3\u7d44\u4ef6\u3002\u9019\u4e9b\u9a45\u52d5\u7a0b\u5e8f\u8ca0\u8cac\u8655\u7406\u6578\u64da\u7684\u8b80\u53d6\u548c\u5beb\u5165\uff0c\u4e26\u63d0\u4f9b\u4e00\u500b\u62bd\u8c61\u5c64\uff0c\u4f7f\u5f97\u4e0a\u5c64\u61c9\u7528\u7a0b\u5e8f\u80fd\u5920\u4ee5\u4e00\u81f4\u7684\u65b9\u5f0f\u8a2a\u554f\u4e0d\u540c\u7684\u5b58\u5132\u8a2d\u5099\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e Linux \u584a\u8a2d\u5099\u9a45\u52d5\u7684\u5de5\u4f5c\u539f\u7406\u3001\u7d50\u69cb\u4ee5\u53ca\u5982\u4f55\u958b\u767c\u4e00\u500b\u7c21\u55ae\u7684\u584a\u8a2d\u5099\u9a45\u52d5\u3002<\/p>\n<h2 id=\"%e5%a1%8a%e8%a8%ad%e5%82%99%e7%9a%84%e6%a6%82%e5%bf%b5-oXmoeHDRqJ\">\u584a\u8a2d\u5099\u7684\u6982\u5ff5<\/h2>\n<p>\u584a\u8a2d\u5099\u662f\u6307\u53ef\u4ee5\u96a8\u6a5f\u8a2a\u554f\u7684\u5b58\u5132\u8a2d\u5099\uff0c\u9019\u610f\u5473\u8457\u6578\u64da\u53ef\u4ee5\u5728\u4efb\u4f55\u9806\u5e8f\u4e2d\u88ab\u8b80\u53d6\u6216\u5beb\u5165\u3002\u8207\u5b57\u7b26\u8a2d\u5099\u4e0d\u540c\uff0c\u584a\u8a2d\u5099\u5141\u8a31\u4ee5\u56fa\u5b9a\u5927\u5c0f\u7684\u584a\u9032\u884c\u6578\u64da\u50b3\u8f38\uff0c\u9019\u4f7f\u5f97\u5b83\u5011\u5728\u6027\u80fd\u548c\u6548\u7387\u4e0a\u5177\u6709\u512a\u52e2\u3002\u5e38\u898b\u7684\u584a\u8a2d\u5099\u5305\u62ec\u786c\u789f\u9a45\u52d5\u5668\uff08HDD\uff09\u3001\u56fa\u614b\u786c\u789f\uff08SSD\uff09\u548c\u865b\u64ec\u78c1\u789f\u3002<\/p>\n<h2 id=\"linux-%e5%a1%8a%e8%a8%ad%e5%82%99%e9%a9%85%e5%8b%95%e7%9a%84%e6%9e%b6%e6%a7%8b-oXmoeHDRqJ\">Linux \u584a\u8a2d\u5099\u9a45\u52d5\u7684\u67b6\u69cb<\/h2>\n<p>Linux \u584a\u8a2d\u5099\u9a45\u52d5\u7684\u67b6\u69cb\u4e3b\u8981\u7531\u4ee5\u4e0b\u5e7e\u500b\u90e8\u5206\u7d44\u6210\uff1a<\/p>\n<ul>\n<li><strong>\u584a\u8a2d\u5099\u7d50\u69cb\u9ad4\uff08block_device_struct\uff09<\/strong>\uff1a\u9019\u662f Linux \u6838\u5fc3\u4e2d\u7528\u65bc\u63cf\u8ff0\u584a\u8a2d\u5099\u7684\u6578\u64da\u7d50\u69cb\uff0c\u5305\u542b\u4e86\u8a2d\u5099\u7684\u5404\u7a2e\u5c6c\u6027\u548c\u72c0\u614b\u4fe1\u606f\u3002<\/li>\n<li><strong>\u8acb\u6c42\u968a\u5217\uff08request_queue\uff09<\/strong>\uff1a\u9019\u662f\u4e00\u500b\u7528\u65bc\u7ba1\u7406 I\/O \u8acb\u6c42\u7684\u968a\u5217\uff0c\u9a45\u52d5\u7a0b\u5e8f\u901a\u904e\u9019\u500b\u968a\u5217\u4f86\u8655\u7406\u4f86\u81ea\u4e0a\u5c64\u7684\u8b80\u5beb\u8acb\u6c42\u3002<\/li>\n<li><strong>\u64cd\u4f5c\u51fd\u6578\uff08operations\uff09<\/strong>\uff1a\u9019\u4e9b\u662f\u9a45\u52d5\u7a0b\u5e8f\u5be6\u73fe\u7684\u51fd\u6578\uff0c\u7528\u65bc\u8655\u7406\u5177\u9ad4\u7684 I\/O \u64cd\u4f5c\uff0c\u5982\u8b80\u53d6\u3001\u5beb\u5165\u548c\u540c\u6b65\u3002<\/li>\n<\/ul>\n<h2 id=\"%e9%96%8b%e7%99%bc%e4%b8%80%e5%80%8b%e7%b0%a1%e5%96%ae%e7%9a%84%e5%a1%8a%e8%a8%ad%e5%82%99%e9%a9%85%e5%8b%95-oXmoeHDRqJ\">\u958b\u767c\u4e00\u500b\u7c21\u55ae\u7684\u584a\u8a2d\u5099\u9a45\u52d5<\/h2>\n<p>\u958b\u767c\u4e00\u500b\u7c21\u55ae\u7684 Linux \u584a\u8a2d\u5099\u9a45\u52d5\u9700\u8981\u9075\u5faa\u4ee5\u4e0b\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e8%a8%ad%e7%bd%ae%e9%96%8b%e7%99%bc%e7%92%b0%e5%a2%83-oXmoeHDRqJ\">1. \u8a2d\u7f6e\u958b\u767c\u74b0\u5883<\/h3>\n<p>\u9996\u5148\uff0c\u78ba\u4fdd\u4f60\u7684\u958b\u767c\u74b0\u5883\u4e2d\u5b89\u88dd\u4e86 Linux \u6838\u5fc3\u6e90\u78bc\u548c\u5fc5\u8981\u7684\u7de8\u8b6f\u5de5\u5177\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5b89\u88dd\uff1a<\/p>\n<pre><code>sudo apt-get install linux-source build-essential<\/code><\/pre>\n<h3 id=\"2-%e5%89%b5%e5%bb%ba%e9%a9%85%e5%8b%95%e7%a8%8b%e5%ba%8f%e6%96%87%e4%bb%b6-oXmoeHDRqJ\">2. \u5275\u5efa\u9a45\u52d5\u7a0b\u5e8f\u6587\u4ef6<\/h3>\n<p>\u5275\u5efa\u4e00\u500b\u65b0\u7684 C \u8a9e\u8a00\u6587\u4ef6\uff0c\u4f8b\u5982 <code>simple_block.c<\/code>\uff0c\u4e26\u5305\u542b\u5fc5\u8981\u7684\u982d\u6587\u4ef6\uff1a<\/p>\n<pre><code>#include &lt;linux\/init.h&gt;\n#include &lt;linux\/module.h&gt;\n#include &lt;linux\/fs.h&gt;\n#include &lt;linux\/bio.h&gt;\n#include &lt;linux\/genhd.h&gt;\n\nMODULE_LICENSE(\"GPL\");\nMODULE_AUTHOR(\"Your Name\");\nMODULE_DESCRIPTION(\"A Simple Block Device Driver\");\n<\/code><\/pre>\n<h3 id=\"3-%e5%af%a6%e7%8f%be%e6%93%8d%e4%bd%9c%e5%87%bd%e6%95%b8-oXmoeHDRqJ\">3. \u5be6\u73fe\u64cd\u4f5c\u51fd\u6578<\/h3>\n<p>\u5728\u9a45\u52d5\u7a0b\u5e8f\u4e2d\u5be6\u73fe\u8b80\u53d6\u548c\u5beb\u5165\u64cd\u4f5c\u51fd\u6578\uff1a<\/p>\n<pre><code>static int simple_block_read(struct block_device *bdev, sector_t sector, \n                               unsigned long nsect, void *buffer) {\n    \/\/ \u5be6\u73fe\u8b80\u53d6\u908f\u8f2f\n}\n\nstatic int simple_block_write(struct block_device *bdev, sector_t sector, \n                                unsigned long nsect, const void *buffer) {\n    \/\/ \u5be6\u73fe\u5beb\u5165\u908f\u8f2f\n}\n<\/code><\/pre>\n<h3 id=\"4-%e8%a8%bb%e5%86%8a%e5%a1%8a%e8%a8%ad%e5%82%99-oXmoeHDRqJ\">4. \u8a3b\u518a\u584a\u8a2d\u5099<\/h3>\n<p>\u4f7f\u7528 <code>register_blkdev<\/code> \u51fd\u6578\u8a3b\u518a\u4f60\u7684\u584a\u8a2d\u5099\uff1a<\/p>\n<pre><code>static int __init simple_block_init(void) {\n    int result = register_blkdev(MAJOR_NUM, \"simple_block\");\n    if (result &lt; 0) {\n        printk(KERN_ALERT &quot;Failed to register block devicen&quot;);\n        return result;\n    }\n    return 0;\n}\n<\/code><\/pre>\n<h3 id=\"5-%e5%8d%b8%e8%bc%89%e9%a9%85%e5%8b%95%e7%a8%8b%e5%ba%8f-oXmoeHDRqJ\">5. \u5378\u8f09\u9a45\u52d5\u7a0b\u5e8f<\/h3>\n<p>\u5728\u9a45\u52d5\u7a0b\u5e8f\u5378\u8f09\u6642\uff0c\u4f7f\u7528 <code>unregister_blkdev<\/code> \u51fd\u6578\u4f86\u6e05\u7406\u8cc7\u6e90\uff1a<\/p>\n<pre><code>static void __exit simple_block_exit(void) {\n    unregister_blkdev(MAJOR_NUM, \"simple_block\");\n}\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-oXmoeHDRqJ\">\u7e3d\u7d50<\/h2>\n<p>Linux \u584a\u8a2d\u5099\u9a45\u52d5\u662f\u64cd\u4f5c\u7cfb\u7d71\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\uff0c\u8ca0\u8cac\u7ba1\u7406\u548c\u64cd\u4f5c\u5404\u7a2e\u5b58\u5132\u8a2d\u5099\u3002\u901a\u904e\u7406\u89e3\u5176\u67b6\u69cb\u548c\u958b\u767c\u904e\u7a0b\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5275\u5efa\u9ad8\u6548\u7684\u9a45\u52d5\u7a0b\u5e8f\u4f86\u6eff\u8db3\u7279\u5b9a\u9700\u6c42\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6027\u80fd\u5b58\u5132\u89e3\u6c7a\u65b9\u6848\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u6216 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u53ef\u80fd\u662f\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\u7684\u95dc\u9375\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u63a2\u8a0e Linux \u584a\u8a2d\u5099\u9a45\u52d5\u7684\u539f\u7406\u8207\u5be6\u4f5c\uff0c\u4e86\u89e3\u5176\u5728\u7cfb\u7d71\u4e2d\u7684\u89d2\u8272\u8207\u6027\u80fd\u512a\u5316\u6280\u5de7\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-198578","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/198578","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=198578"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/198578\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=198578"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=198578"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=198578"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}