{"id":515,"date":"2008-03-23T06:12:45","date_gmt":"2008-03-23T06:12:45","guid":{"rendered":"http:\/\/pchero21.com\/?p=515"},"modified":"2008-03-23T06:12:45","modified_gmt":"2008-03-23T06:12:45","slug":"%eb%94%94%eb%b0%94%ec%9d%b4%ec%8a%a4-%eb%93%9c%eb%9d%bc%ec%9d%b4%eb%b2%84%ec%9d%98-%ec%bb%a4%eb%84%90-%ec%82%bd%ec%9e%85-%ea%b3%bc%ec%a0%95","status":"publish","type":"post","link":"http:\/\/pchero21.com\/?p=515","title":{"rendered":"\ub514\ubc14\uc774\uc2a4 \ub4dc\ub77c\uc774\ubc84\uc758 \ucee4\ub110 \uc0bd\uc785 \uacfc\uc815"},"content":{"rendered":"

 \ub2e4\uc74c\uacfc \uac19\uc740 \uba85\ub839\uc744 \uc774\uc6a9\ud558\uc5ec \ub514\ubc14\uc774\uc2a4 \ub4dc\ub77c\uc774\ubc84\ub97c \ucee4\ub110\uc5d0 \uc0bd\uc785\ud55c\ub2e4.<\/p>\n

 $ insmod driver.o<\/p><\/blockquote>\n

 \uc5ec\uae30\uc11c driver.o\ub294 \ud14c\uc2a4\ud2b8\ub85c \uc791\uc131\ub41c \ub514\ubc14\uc774\uc2a4 \ub4dc\ub77c\uc774\ubc84 \ud30c\uc77c\uba85\uc774\ub2e4.<\/p>\n

 \uc704\uc640 \uac19\uc774 \ucf58\uc194\uc5d0\uc11c insmod driver.o \ub97c \uc2e4\ud589 \uc2dc\ud0a4\uba74 \ub2e4\uc74c\uacfc \uac19\uc740 \uc2dc\uc2a4\ud15c \ucf5c\uc774 \uc218\ud589\ub418\uc5b4 \ub4dc\ub77c\uc774\ubc84\ub97c \ucee4\ub110\uc5d0 \uc0bd\uc785\ud55c\ub2e4.<\/p>\n

 1. sys_create_module()\uc744 \uc0ac\uc6a9\ud558\uc5ec \ub514\ubc14\uc774\uc2a4 \ub4dc\ub77c\uc774\ubc84\ub97c \uc801\uc7ac\ud558\uae30 \uc704\ud55c \uba54\ubaa8\ub9ac\ub97c \ud560\ub2f9\ud55c\ub2e4.
 2. sys_get_kernel_syms()\ub97c \uc774\uc6a9\ud558\uc5ec driver.o \uc548\uc5d0 \uc788\ub294 \uc2ec\ubcfc\uc744 \ucee4\ub110\uc5d0 \ub4f1\ub85d\ud55c\ub2e4.
 3. \ub9c8\uc9c0\ub9c9\uc73c\ub85c sys_init_module() \uc744 \uc0ac\uc6a9\ud558\uc5ec driver.o\ub97c \uba54\ubaa8\ub9ac\uc5d0 \uc801\uc7ac\ud55c\ub2e4. \uc774 \uacfc\uc815\uc5d0\uc11c driver.o \uc548\uc5d0 \uc788\ub294 init_module()\uc774 \uc2e4\ud589\ub418\uace0 \uadf8 \uc548\uc5d0 \uc788\ub294 \ucee4\ub110 \ud568\uc218\uc778 register_chrdev() \uac00 \uc218\ud589\ub418\uc5b4 \ub514\ubc14\uc774\uc2a4 \ub4dc\ub77c\uc774\ubc84 \uc774\ub984\uacfc \uba54\uc774\uc800 \ubc88\ud638\uc640 file_operations \uad6c\uc870\uccb4\ub97c \ucee4\ub110 \ubcc0\uc218\uc778 chrdevs\uc5d0 \ub4f1\ub85d\ud55c\ub2e4.<\/p><\/blockquote>\n

 \uc704\uc640 \uac19\uc774 \ub514\ubc14\uc774\uc2a4 \ub4dc\ub77c\uc774\ubc84\ub97c \ucee4\ub110\uc5d0 \uc0bd\uc785\ud588\uc73c\uba74 \ub2e4\uc74c \ud574\uc57c \ud558\ub294 \uc77c\uc740 \ub4dc\ub77c\uc774\ubc84\uc5d0 \ub300\uc751\ud558\ub294 \ud2b9\uc218 \uc7a5\uce58 \ud30c\uc77c(\ub178\ub4dc)\uc744 \ub9cc\ub4dc\ub294 \uc77c\uc774\ub2e4.<\/p>\n

 \ub2e4\uc74c\uc740 \ucf58\uc194\uc5d0\uc11c \ud2b9\uc218 \uc7a5\uce58 \ud30c\uc77c\uc744 \ub9cc\ub4dc\ub294 \uba85\ub839\uc774\ub2e4.
<\/p>\n

 $ mknod \/dev\/device c \uc8fc\ubc88\ud638 \ubd80\ubc88\ud638<\/p><\/blockquote>\n

<\/span>  \uc704\uc758 \uba85\ub839\uc5d0 \uc758\ud574 \ucee4\ub110\uc5d0\uc11c \uc218\ud589 \ub418\ub294 \uc77c\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4. mknod \uba85\ub839\uc740 \ucee4\ub110\uc758 sys_mknod()\ub97c \ud638\ucd9c\ud558\uace0 \uc774 \ud568\uc218\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \uc77c\uc744 \uc218\ud589\ud55c\ub2e4.<\/p>\n


 1. \uba3c\uc800 \/(root) \uc5d0\uc11c \uc2dc\uc791\ud574\uc11c dev \ub514\ub809\ud1a0\ub9ac\uae4c\uc9c0\uc758 \uacbd\ub85c\ub97c \ucc3e\uc544 \uc0c8\ub85c\uc6b4 dentry\ub97c \ud558\ub098 \ub9cc\ub4e4\uace0 \ub8e8\ud2b8\uc5d0 \uc5f0\uacb0\ud55c\ub2e4.<\/span>
 2. inode \ud558\ub098\ub97c \ub9cc\ub4e4\uace0 dentry\uc758 d_inode\uc5d0 \uc5f0\uacb0\ud55c\ub2e4.<\/span>
 3. inode\uc758 i_mode \uc640 i_rdev\uc5d0 S_IFCHR \uacfc (\uc8fc\ubc88\ud638 << 8 | \ubd80\ubc88\ud638)\uc744 \uae30\ub85d\ud55c\ub2e4.<\/span>
 4. inode\uc758 i_fop\uc5d0 def_chr_fops\uc758 \uc8fc\uc18c\uac12\uc744 \uae30\ub85d\ud558\uc5ec \uc774\ub97c \ud1b5\ud574 open \uba54\uc18c\ub4dc\uc5d0 chrdev_open()\uc774 \uc5f0\uacb0\ub418\ub3c4\ub85d \ud55c\ub2e4.<\/span><\/p><\/blockquote>\n

 \uc704\uc640 \uac19\uc774 \ucee4\ub110\uc5d0 \ub514\ubc14\uc774\uc2a4 \ub4dc\ub77c\uc774\ubc84\ub97c \uc0bd\uc785\ud558\uace0 \uc774\uac83\uc5d0 \ub300\uc751\ud558\ub294 \ud2b9\uc218\uc7a5\uce58 \ud30c\uc77c\uc744 \ub9cc\ub4e4\uc5b4\uc57c \uc5b4\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \ub514\ubc14\uc774\uc2a4 \ub4dc\ub77c\uc774\ubc84 \uc0ac\uc6a9\uc774 \uac00\ub2a5\ud558\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"

 \ub2e4\uc74c\uacfc \uac19\uc740 \uba85\ub839\uc744 \uc774\uc6a9\ud558\uc5ec \ub514\ubc14\uc774\uc2a4 \ub4dc\ub77c\uc774\ubc84\ub97c \ucee4\ub110\uc5d0 \uc0bd\uc785\ud55c\ub2e4.  $ insmod driver.o  \uc5ec\uae30\uc11c driver.o\ub294 \ud14c\uc2a4\ud2b8\ub85c \uc791\uc131\ub41c \ub514\ubc14\uc774\uc2a4 \ub4dc\ub77c\uc774\ubc84 \ud30c\uc77c\uba85\uc774\ub2e4.  \uc704\uc640 \uac19\uc774 \ucf58\uc194\uc5d0\uc11c insmod driver.o \ub97c \uc2e4\ud589 \uc2dc\ud0a4\uba74 \ub2e4\uc74c\uacfc \uac19\uc740 \uc2dc\uc2a4\ud15c \ucf5c\uc774 \uc218\ud589\ub418\uc5b4 \ub4dc\ub77c\uc774\ubc84\ub97c \ucee4\ub110\uc5d0 \uc0bd\uc785\ud55c\ub2e4.  1. sys_create_module()\uc744 \uc0ac\uc6a9\ud558\uc5ec \ub514\ubc14\uc774\uc2a4 \ub4dc\ub77c\uc774\ubc84\ub97c \uc801\uc7ac\ud558\uae30 … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[21],"tags":[509,754],"_links":{"self":[{"href":"http:\/\/pchero21.com\/index.php?rest_route=\/wp\/v2\/posts\/515"}],"collection":[{"href":"http:\/\/pchero21.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/pchero21.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/pchero21.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/pchero21.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=515"}],"version-history":[{"count":0,"href":"http:\/\/pchero21.com\/index.php?rest_route=\/wp\/v2\/posts\/515\/revisions"}],"wp:attachment":[{"href":"http:\/\/pchero21.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=515"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/pchero21.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=515"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/pchero21.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=515"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}