{"id":1820,"date":"2016-04-26T10:12:09","date_gmt":"2016-04-26T02:12:09","guid":{"rendered":"http:\/\/www.51cos.com\/?p=1820"},"modified":"2016-05-12T13:41:38","modified_gmt":"2016-05-12T05:41:38","slug":"1820","status":"publish","type":"post","link":"http:\/\/www.51cos.com\/?p=1820","title":{"rendered":"Linux\u4e2d\u7684\u70ed\u63d2\u62d4\u548cmdev\u673a\u5236"},"content":{"rendered":"

mdev\u662fbusybox\u81ea\u5e26\u7684\u4e00\u4e2a\u7b80\u5316\u7248\u7684udev\uff08https:\/\/wiki.archlinux.org\/index.php\/Udev_%28%E7%AE%80%E4%BD%93%E4%B8%AD%E6%96%87%29\uff09\u3002
\n\u4f5c\u7528\u662f\u5728\u7cfb\u7edf\u542f\u52a8\u548c\u70ed\u63d2\u62d4 \u6216\u52a8\u6001\u52a0\u8f7d\u9a71\u52a8\u7a0b\u5e8f\u65f6\uff0c\u81ea\u52a8\u4ea7\u751f\u9a71\u52a8\u7a0b\u5e8f\u6240\u9700\u7684\u8282\u70b9\u6587\u4ef6\uff0c\u5728\u6587\u4ef6\u7cfb\u7edf\u4e2d\u7684\/dev\u76ee\u5f55\u4e0b\u7684\u8bbe\u5907\u8282\u70b9\u90fd\u662f\u7531mdev\u521b\u5efa\u7684\u3002
\nmdev\u626b\u63cf\/sys\/class\u548c\/sys\/block\u4e2d\u6240\u6709\u7684\u7c7b\u8bbe\u5907\u76ee\u5f55\uff0c\u5982\u679c\u5728\u76ee\u5f55\u4e2d\u542b\u6709\u540d\u4e3a”dev”\u7684\u6587\u4ef6\uff0c\u4e14\u6587\u4ef6\u4e2d\u5305\u542b\u7684\u662f\u8bbe\u5907\u53f7\uff0c\u5219mdev\u5c31\u5229\u7528\u8fd9\u4e9b\u4fe1\u606f\u4e3a\u8fd9\u4e2a\u8bbe\u5907\u5728\/dev\u4e0b\u521b\u5efa\u8bbe\u5907\u8282\u70b9\u3002
\n\u7528\u6cd5\uff1a
\n1. \u6267\u884cmdev\u524d\u8981\u6302\u8f7d \/sys<\/p>\n

\nmount -t tmpfs mdev \/dev
\nmount -t sysfs sysfs \/sys<\/p>\n
2.\u547d\u4ee4\u5185\u6838\u5728\u589e\u5220\u8bbe\u5907\u65f6\u6267\u884c\/sbin\/mdev\uff0c\u4f7f\u8bbe\u5907\u8282\u70b9\u4f1a\u88ab\u521b\u5efa\u548c\u5220\u9664<\/p>\n
\necho \/sbin\/mdev > \/proc\/sys\/kernel\/hotplug<\/p>\n
3.\u8bbe\u7f6emdev\uff0c\u8ba9\u5b83\u5728\u7cfb\u7edf\u542f\u52a8\u65f6\u521b\u5efa\u6240\u6709\u7684\u8bbe\u5907\u8282\u70b9<\/p>\n
\nmdev -s<\/p>\n
\u5173\u4e8e\u70ed\u63d2\u62d4\uff1a
\n\u9700\u8981\u5185\u6838\u4e2d\u652f\u6301hotplug
\n\u7f16\u5199mdev\u914d\u7f6e\u6587\u4ef6\uff1a\/etc\/mdev.conf
\n\u8be5\u6587\u4ef6\u7684\u4f5c\u7528\u662f\uff1amdev\u5728\u627e\u5230\u5339\u914d\u8bbe\u5907\u65f6\u81ea\u52a8\u6267\u884c\u81ea\u5b9a\u4e49\u547d\u4ee4
\n\u683c\u5f0f\u4e3a\uff1a
\n :  [<@$*>]
\n@ \u521b\u5efa\u8282\u70b9\u540e\u6267\u884c\u7684
\n$ \u5220\u9664\u8282\u70b9\u524d\u6267\u884c\u7684
\n* \u521b\u5efa\u540e\u548c\u5220\u9664\u524d\u90fd\u8fd0\u884c\u7684
\n\u5982\u81ea\u52a8\u6302\u8f7dU\u76d8\u548cSD\u5361\u811a\u672c\uff1a<\/p>\n
\n    sd[a-z][0-9] 0:0 0660 @\/etc\/hotplug\/usb\/udisk_insert
\n    sd[a-z] 0:0 0660 \/etc\/hotplug\/usb\/udisk_remove
\n    mmcblk[0-9]p[0-9] 0:0 0660 @\/etc\/hotplug\/sd\/sd_insert
\n    mmcblk[0-9] 0:0 0660<\/span>\/etc\/hotplug\/sd\/sd_remove<\/p>\n
\u5f53\u68c0\u6d4b\u5230\u7c7b\u4f3csda1\u8fd9\u6837\u7684\u8bbe\u5907\u65f6\uff0c\u6267\u884c\/etc\/hotplug\/usb\u91cc\u7684\u811a\u672c\uff0c\u811a\u672c\u7684\u5185\u5bb9\u5c31\u662f\u6302\u8f7d\u548c\u5378\u8f7dU\u76d8
\n\u5f53\u68c0\u6d4b\u5230\u7c7b\u4f3cmmcblk0p1\u8fd9\u6837\u7684\u8bbe\u5907\u65f6\uff0c\u6267\u884c\/etc\/hotplug\/sd\u91cc\u7684\u811a\u672c\uff0c\u811a\u672c\u7684\u5185\u5bb9\u5c31\u662f\u6302\u8f7d\u548c\u5378\u8f7dSD\u5361 <\/p>\n
mdev\u662fbusybox\u4e2d\u7684\u4e00\u4e2audev\u7ba1\u7406\u7a0b\u5e8f\u7684\u4e00\u4e2a\u7cbe\u7b80\u7248\uff0c\u4ed6\u4e5f\u53ef\u4ee5\u5b9e\u73b0\u8bbe\u5907\u8282\u70b9\u7684\u81ea\u52a8\u521b\u5efa\u548c\u8bbe\u5907\u7684\u81ea\u52a8\u6302\u8f7d\uff0c\u53ea\u662f\u5728\u5b9e\u73b0\u7684\u8fc7\u7a0b\u4e2d\u6709\u70b9\u5dee\u5f02\uff0c\u5728\u53d1\u751f\u70ed\u63d2\u62d4\u65f6\u95f4\u7684\u65f6\u5019\uff0cmdev\u662f\u88abhotplug\u76f4\u63a5\u8c03\u7528\uff0c\u8fd9\u65f6mdev\u901a\u8fc7\u73af\u5883\u53d8\u91cf\u4e2d\u7684 ACTION \u548c DEVPATH\uff0c\u6765\u786e\u5b9a\u6b64\u6b21\u70ed\u63d2\u62d4\u4e8b\u4ef6\u7684\u52a8\u4f5c\u4ee5\u53ca\u5f71\u54cd\u4e86\/sys\u4e2d\u7684\u90a3\u4e2a\u76ee\u5f55\u3002\u63a5\u7740\u4f1a\u770b\u770b\u8fd9\u4e2a\u76ee\u5f55\u4e2d\u662f\u5426\u6709\u201cdev\u201d\u7684\u5c5e\u6027\u6587\u4ef6\uff0c\u5982\u679c\u6709\u5c31\u5229\u7528\u8fd9\u4e9b\u4fe1\u606f\u4e3a\u8fd9\u4e2a\u8bbe\u5907\u5728\/dev \u4e0b\u521b\u5efa\u8bbe\u5907\u8282\u70b9\u6587\u4ef6\u3002<\/p>\n
\u4e0b\u9762\u662f\u5982\u4f55\u8ba9\u6211\u4eec\u7684\u7cfb\u7edf\u652f\u6301mdev\u3002
\n1.\u5728\u4f7f\u7528busybox\u5236\u4f5c\u6839\u6587\u4ef6\u7cfb\u7edf\u7684\u65f6\u5019\uff0c\u9009\u62e9\u652f\u6301mdev<\/p>\n
\nLinux System Utilities --->
\n[*] mdev
\n[*] Support \/etc\/mdev.conf
\n[*] Support command execution at device addition\/removal<\/p>\n
2.\u5728\u6587\u4ef6\u7cfb\u7edf\u6dfb\u52a0\u5982\u4e0b\u5185\u5bb9<\/p>\n
\nVim \/etc\/init.d\/rcS
\nmount -t tmpfs mdev \/dev
\nmount -t sysfs sysfs \/sys
\nmkdir \/dev\/pts
\nmount -t devpts devpts \/dev\/pts
\necho \/sbin\/mdev>\/proc\/sys\/kernel\/hotplug
\nmdev \u2013s<\/p>\n","protected":false},"excerpt":{"rendered":"
mdev\u662fbusybox\u81ea\u5e26\u7684\u4e00\u4e2a\u7b80\u5316\u7248\u7684udev\uff08https:\/\/wiki.archlinux.org\/in […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-1820","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/posts\/1820","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.51cos.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1820"}],"version-history":[{"count":3,"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/posts\/1820\/revisions"}],"predecessor-version":[{"id":1877,"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/posts\/1820\/revisions\/1877"}],"wp:attachment":[{"href":"http:\/\/www.51cos.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1820"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.51cos.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1820"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.51cos.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1820"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}