📄 ioctl.c
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<!doctype html public "-//W3C//DTD HTML 3.2//EN"><html><head><title>Linux/fs/ioctl.c</title><meta http-equiv=Content-Type content="text/html; charset=gb2312"><base href="http://oldlinux.org/lxr/http/"></head><body bgcolor=white><div align=center> [<b><i>源代码浏览</i></b>] [<a href="diff/fs/ioctl.c">区别标定</a>] [<a href="ident">标识符搜索</a>] [<a href="search">文本搜索</a>] [<a href="find">文件搜索</a>]</div><h1 align=center> <a href="http:/"> OldLinux</a> <a href="http:blurb.html"> 交叉引用</a><br> <a href="source/">Linux</a>/<a href="source/fs/">fs</a>/<a href="source/fs/ioctl.c">ioctl.c</a></h1><div align=center> <b>版本:</b> [<a href="source/fs/ioctl.c?v=1.0">1.0</a>] [<a href="source/fs/ioctl.c?v=0.99.11">0.99.11</a>] [<a href="source/fs/ioctl.c?v=0.99">0.99</a>] [<a href="source/fs/ioctl.c?v=0.97">0.97</a>] [<a href="source/fs/ioctl.c?v=0.96a">0.96a</a>] [<a href="source/fs/ioctl.c?v=0.95">0.95</a>] [<a href="source/fs/ioctl.c?v=0.12">0.12</a>] [<b><i>0.11</i></b>] [<a href="source/fs/ioctl.c?v=0.01">0.01</a>] <br> <b>体系结构:</b> [<b><i>i386</i></b>] <br></div><hr><pre> <a name=L1 href="source/fs/ioctl.c#L1">1</a> <b><i>/*</i></b> <a name=L2 href="source/fs/ioctl.c#L2">2</a> <b><i> * linux/fs/ioctl.c</i></b> <a name=L3 href="source/fs/ioctl.c#L3">3</a> <b><i> *</i></b> <a name=L4 href="source/fs/ioctl.c#L4">4</a> <b><i> * (C) 1991 Linus Torvalds</i></b> <a name=L5 href="source/fs/ioctl.c#L5">5</a> <b><i> */</i></b> <a name=L6 href="source/fs/ioctl.c#L6">6</a> <a name=L7 href="source/fs/ioctl.c#L7">7</a> #include <string.h> <a name=L8 href="source/fs/ioctl.c#L8">8</a> #include <errno.h> <a name=L9 href="source/fs/ioctl.c#L9">9</a> #include <sys/stat.h> <a name=L10 href="source/fs/ioctl.c#L10">10</a> <a name=L11 href="source/fs/ioctl.c#L11">11</a> #include <linux/sched.h> <a name=L12 href="source/fs/ioctl.c#L12">12</a> <a name=L13 href="source/fs/ioctl.c#L13">13</a> extern int <a href="ident?i=tty_ioctl">tty_ioctl</a>(int dev, int cmd, int arg); <a name=L14 href="source/fs/ioctl.c#L14">14</a> <a name=L15 href="source/fs/ioctl.c#L15">15</a> typedef int (*<a href="ident?i=ioctl_ptr">ioctl_ptr</a>)(int dev,int cmd,int arg); <a name=L16 href="source/fs/ioctl.c#L16">16</a> <a name=L17 href="source/fs/ioctl.c#L17">17</a> #define <a href="ident?i=NRDEVS">NRDEVS</a> ((sizeof (<a href="ident?i=ioctl_table">ioctl_table</a>))/(sizeof (<a href="ident?i=ioctl_ptr">ioctl_ptr</a>))) <a name=L18 href="source/fs/ioctl.c#L18">18</a> <a name=L19 href="source/fs/ioctl.c#L19">19</a> static <a href="ident?i=ioctl_ptr">ioctl_ptr</a> <a href="ident?i=ioctl_table">ioctl_table</a>[]={ <a name=L20 href="source/fs/ioctl.c#L20">20</a> <a href="ident?i=NULL">NULL</a>, <b><i>/* nodev */</i></b> <a name=L21 href="source/fs/ioctl.c#L21">21</a> <a href="ident?i=NULL">NULL</a>, <b><i>/* /dev/mem */</i></b> <a name=L22 href="source/fs/ioctl.c#L22">22</a> <a href="ident?i=NULL">NULL</a>, <b><i>/* /dev/fd */</i></b> <a name=L23 href="source/fs/ioctl.c#L23">23</a> <a href="ident?i=NULL">NULL</a>, <b><i>/* /dev/hd */</i></b> <a name=L24 href="source/fs/ioctl.c#L24">24</a> <a href="ident?i=tty_ioctl">tty_ioctl</a>, <b><i>/* /dev/ttyx */</i></b> <a name=L25 href="source/fs/ioctl.c#L25">25</a> <a href="ident?i=tty_ioctl">tty_ioctl</a>, <b><i>/* /dev/tty */</i></b> <a name=L26 href="source/fs/ioctl.c#L26">26</a> <a href="ident?i=NULL">NULL</a>, <b><i>/* /dev/lp */</i></b> <a name=L27 href="source/fs/ioctl.c#L27">27</a> <a href="ident?i=NULL">NULL</a>}; <b><i>/* named pipes */</i></b> <a name=L28 href="source/fs/ioctl.c#L28">28</a> <a name=L29 href="source/fs/ioctl.c#L29">29</a> <a name=L30 href="source/fs/ioctl.c#L30">30</a> int <a href="ident?i=sys_ioctl">sys_ioctl</a>(unsigned int fd, unsigned int cmd, unsigned long arg) <a name=L31 href="source/fs/ioctl.c#L31">31</a> { <a name=L32 href="source/fs/ioctl.c#L32">32</a> struct <a href="ident?i=file">file</a> * filp; <a name=L33 href="source/fs/ioctl.c#L33">33</a> int dev,mode; <a name=L34 href="source/fs/ioctl.c#L34">34</a> <a name=L35 href="source/fs/ioctl.c#L35">35</a> if (fd >= <a href="ident?i=NR_OPEN">NR_OPEN</a> || !(filp = <a href="ident?i=current">current</a>->filp[fd])) <a name=L36 href="source/fs/ioctl.c#L36">36</a> return -<a href="ident?i=EBADF">EBADF</a>; <a name=L37 href="source/fs/ioctl.c#L37">37</a> mode=filp->f_inode->i_mode; <a name=L38 href="source/fs/ioctl.c#L38">38</a> if (!<a href="ident?i=S_ISCHR">S_ISCHR</a>(mode) && !<a href="ident?i=S_ISBLK">S_ISBLK</a>(mode)) <a name=L39 href="source/fs/ioctl.c#L39">39</a> return -<a href="ident?i=EINVAL">EINVAL</a>; <a name=L40 href="source/fs/ioctl.c#L40">40</a> dev = filp->f_inode->i_zone[0]; <a name=L41 href="source/fs/ioctl.c#L41">41</a> if (<a href="ident?i=MAJOR">MAJOR</a>(dev) >= <a href="ident?i=NRDEVS">NRDEVS</a>) <a name=L42 href="source/fs/ioctl.c#L42">42</a> return -<a href="ident?i=ENODEV">ENODEV</a>; <a name=L43 href="source/fs/ioctl.c#L43">43</a> if (!<a href="ident?i=ioctl_table">ioctl_table</a>[<a href="ident?i=MAJOR">MAJOR</a>(dev)]) <a name=L44 href="source/fs/ioctl.c#L44">44</a> return -<a href="ident?i=ENOTTY">ENOTTY</a>; <a name=L45 href="source/fs/ioctl.c#L45">45</a> return <a href="ident?i=ioctl_table">ioctl_table</a>[<a href="ident?i=MAJOR">MAJOR</a>(dev)](dev,cmd,arg); <a name=L46 href="source/fs/ioctl.c#L46">46</a> } <a name=L47 href="source/fs/ioctl.c#L47">47</a> </pre><hr><div align=center> [<b><i>源代码浏览</i></b>] [<a href="diff/fs/ioctl.c">区别标定</a>] [<a href="ident">标识符搜索</a>] [<a href="search">文本搜索</a>] [<a href="find">文件搜索</a>] </div><hr>本网页由 <a href="http:blurb.html">LXR引擎</a> 自动生成.<br></html>⌨️ 快捷键说明
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