📄 tty_io.c
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<!doctype html public "-//W3C//DTD HTML 3.2//EN"><html><head><title>Linux/kernel/chr_drv/tty_io.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/kernel/chr_drv/tty_io.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/kernel/">kernel</a>/<a href="source/kernel/chr_drv/">chr_drv</a>/<a href="source/kernel/chr_drv/tty_io.c">tty_io.c</a></h1><div align=center> <b>版本:</b> [<a href="source/kernel/chr_drv/tty_io.c?v=1.0">1.0</a>] [<a href="source/kernel/chr_drv/tty_io.c?v=0.99.11">0.99.11</a>] [<a href="source/kernel/chr_drv/tty_io.c?v=0.99">0.99</a>] [<a href="source/kernel/chr_drv/tty_io.c?v=0.97">0.97</a>] [<a href="source/kernel/chr_drv/tty_io.c?v=0.96a">0.96a</a>] [<a href="source/kernel/chr_drv/tty_io.c?v=0.95">0.95</a>] [<a href="source/kernel/chr_drv/tty_io.c?v=0.12">0.12</a>] [<b><i>0.11</i></b>] [<a href="source/kernel/chr_drv/tty_io.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/kernel/chr_drv/tty_io.c#L1">1</a> <b><i>/*</i></b> <a name=L2 href="source/kernel/chr_drv/tty_io.c#L2">2</a> <b><i> * linux/kernel/tty_io.c</i></b> <a name=L3 href="source/kernel/chr_drv/tty_io.c#L3">3</a> <b><i> *</i></b> <a name=L4 href="source/kernel/chr_drv/tty_io.c#L4">4</a> <b><i> * (C) 1991 Linus Torvalds</i></b> <a name=L5 href="source/kernel/chr_drv/tty_io.c#L5">5</a> <b><i> */</i></b> <a name=L6 href="source/kernel/chr_drv/tty_io.c#L6">6</a> <a name=L7 href="source/kernel/chr_drv/tty_io.c#L7">7</a> <b><i>/*</i></b> <a name=L8 href="source/kernel/chr_drv/tty_io.c#L8">8</a> <b><i> * 'tty_io.c' gives an orthogonal feeling to tty's, be they consoles</i></b> <a name=L9 href="source/kernel/chr_drv/tty_io.c#L9">9</a> <b><i> * or rs-channels. It also implements echoing, cooked mode etc.</i></b> <a name=L10 href="source/kernel/chr_drv/tty_io.c#L10">10</a> <b><i> *</i></b> <a name=L11 href="source/kernel/chr_drv/tty_io.c#L11">11</a> <b><i> * Kill-line thanks to John T Kohl.</i></b> <a name=L12 href="source/kernel/chr_drv/tty_io.c#L12">12</a> <b><i> */</i></b> <a name=L13 href="source/kernel/chr_drv/tty_io.c#L13">13</a> #include <ctype.h> <a name=L14 href="source/kernel/chr_drv/tty_io.c#L14">14</a> #include <errno.h> <a name=L15 href="source/kernel/chr_drv/tty_io.c#L15">15</a> #include <signal.h> <a name=L16 href="source/kernel/chr_drv/tty_io.c#L16">16</a> <a name=L17 href="source/kernel/chr_drv/tty_io.c#L17">17</a> #define <a href="ident?i=ALRMMASK">ALRMMASK</a> (1<<(<a href="ident?i=SIGALRM">SIGALRM</a>-1)) <a name=L18 href="source/kernel/chr_drv/tty_io.c#L18">18</a> #define <a href="ident?i=KILLMASK">KILLMASK</a> (1<<(<a href="ident?i=SIGKILL">SIGKILL</a>-1)) <a name=L19 href="source/kernel/chr_drv/tty_io.c#L19">19</a> #define <a href="ident?i=INTMASK">INTMASK</a> (1<<(<a href="ident?i=SIGINT">SIGINT</a>-1)) <a name=L20 href="source/kernel/chr_drv/tty_io.c#L20">20</a> #define <a href="ident?i=QUITMASK">QUITMASK</a> (1<<(<a href="ident?i=SIGQUIT">SIGQUIT</a>-1)) <a name=L21 href="source/kernel/chr_drv/tty_io.c#L21">21</a> #define <a href="ident?i=TSTPMASK">TSTPMASK</a> (1<<(<a href="ident?i=SIGTSTP">SIGTSTP</a>-1)) <a name=L22 href="source/kernel/chr_drv/tty_io.c#L22">22</a> <a name=L23 href="source/kernel/chr_drv/tty_io.c#L23">23</a> #include <linux/sched.h> <a name=L24 href="source/kernel/chr_drv/tty_io.c#L24">24</a> #include <linux/tty.h> <a name=L25 href="source/kernel/chr_drv/tty_io.c#L25">25</a> #include <asm/segment.h> <a name=L26 href="source/kernel/chr_drv/tty_io.c#L26">26</a> #include <asm/system.h> <a name=L27 href="source/kernel/chr_drv/tty_io.c#L27">27</a> <a name=L28 href="source/kernel/chr_drv/tty_io.c#L28">28</a> #define <a href="ident?i=_L_FLAG">_L_FLAG</a>(tty,f) ((tty)-><a href="ident?i=termios">termios</a>.c_lflag & f) <a name=L29 href="source/kernel/chr_drv/tty_io.c#L29">29</a> #define <a href="ident?i=_I_FLAG">_I_FLAG</a>(tty,f) ((tty)-><a href="ident?i=termios">termios</a>.c_iflag & f) <a name=L30 href="source/kernel/chr_drv/tty_io.c#L30">30</a> #define <a href="ident?i=_O_FLAG">_O_FLAG</a>(tty,f) ((tty)-><a href="ident?i=termios">termios</a>.c_oflag & f) <a name=L31 href="source/kernel/chr_drv/tty_io.c#L31">31</a> <a name=L32 href="source/kernel/chr_drv/tty_io.c#L32">32</a> #define <a href="ident?i=L_CANON">L_CANON</a>(tty) <a href="ident?i=_L_FLAG">_L_FLAG</a>((tty),<a href="ident?i=ICANON">ICANON</a>) <a name=L33 href="source/kernel/chr_drv/tty_io.c#L33">33</a> #define <a href="ident?i=L_ISIG">L_ISIG</a>(tty) <a href="ident?i=_L_FLAG">_L_FLAG</a>((tty),<a href="ident?i=ISIG">ISIG</a>) <a name=L34 href="source/kernel/chr_drv/tty_io.c#L34">34</a> #define <a href="ident?i=L_ECHO">L_ECHO</a>(tty) <a href="ident?i=_L_FLAG">_L_FLAG</a>((tty),<a href="ident?i=ECHO">ECHO</a>) <a name=L35 href="source/kernel/chr_drv/tty_io.c#L35">35</a> #define <a href="ident?i=L_ECHOE">L_ECHOE</a>(tty) <a href="ident?i=_L_FLAG">_L_FLAG</a>((tty),<a href="ident?i=ECHOE">ECHOE</a>) <a name=L36 href="source/kernel/chr_drv/tty_io.c#L36">36</a> #define <a href="ident?i=L_ECHOK">L_ECHOK</a>(tty) <a href="ident?i=_L_FLAG">_L_FLAG</a>((tty),<a href="ident?i=ECHOK">ECHOK</a>) <a name=L37 href="source/kernel/chr_drv/tty_io.c#L37">37</a> #define <a href="ident?i=L_ECHOCTL">L_ECHOCTL</a>(tty) <a href="ident?i=_L_FLAG">_L_FLAG</a>((tty),<a href="ident?i=ECHOCTL">ECHOCTL</a>) <a name=L38 href="source/kernel/chr_drv/tty_io.c#L38">38</a> #define <a href="ident?i=L_ECHOKE">L_ECHOKE</a>(tty) <a href="ident?i=_L_FLAG">_L_FLAG</a>((tty),<a href="ident?i=ECHOKE">ECHOKE</a>) <a name=L39 href="source/kernel/chr_drv/tty_io.c#L39">39</a> <a name=L40 href="source/kernel/chr_drv/tty_io.c#L40">40</a> #define <a href="ident?i=I_UCLC">I_UCLC</a>(tty) <a href="ident?i=_I_FLAG">_I_FLAG</a>((tty),<a href="ident?i=IUCLC">IUCLC</a>) <a name=L41 href="source/kernel/chr_drv/tty_io.c#L41">41</a> #define <a href="ident?i=I_NLCR">I_NLCR</a>(tty) <a href="ident?i=_I_FLAG">_I_FLAG</a>((tty),<a href="ident?i=INLCR">INLCR</a>) <a name=L42 href="source/kernel/chr_drv/tty_io.c#L42">42</a> #define <a href="ident?i=I_CRNL">I_CRNL</a>(tty) <a href="ident?i=_I_FLAG">_I_FLAG</a>((tty),<a href="ident?i=ICRNL">ICRNL</a>) <a name=L43 href="source/kernel/chr_drv/tty_io.c#L43">43</a> #define <a href="ident?i=I_NOCR">I_NOCR</a>(tty) <a href="ident?i=_I_FLAG">_I_FLAG</a>((tty),<a href="ident?i=IGNCR">IGNCR</a>) <a name=L44 href="source/kernel/chr_drv/tty_io.c#L44">44</a> <a name=L45 href="source/kernel/chr_drv/tty_io.c#L45">45</a> #define <a href="ident?i=O_POST">O_POST</a>(tty) <a href="ident?i=_O_FLAG">_O_FLAG</a>((tty),<a href="ident?i=OPOST">OPOST</a>) <a name=L46 href="source/kernel/chr_drv/tty_io.c#L46">46</a> #define <a href="ident?i=O_NLCR">O_NLCR</a>(tty) <a href="ident?i=_O_FLAG">_O_FLAG</a>((tty),<a href="ident?i=ONLCR">ONLCR</a>) <a name=L47 href="source/kernel/chr_drv/tty_io.c#L47">47</a> #define <a href="ident?i=O_CRNL">O_CRNL</a>(tty) <a href="ident?i=_O_FLAG">_O_FLAG</a>((tty),<a href="ident?i=OCRNL">OCRNL</a>) <a name=L48 href="source/kernel/chr_drv/tty_io.c#L48">48</a> #define <a href="ident?i=O_NLRET">O_NLRET</a>(tty) <a href="ident?i=_O_FLAG">_O_FLAG</a>((tty),<a href="ident?i=ONLRET">ONLRET</a>) <a name=L49 href="source/kernel/chr_drv/tty_io.c#L49">49</a> #define <a href="ident?i=O_LCUC">O_LCUC</a>(tty) <a href="ident?i=_O_FLAG">_O_FLAG</a>((tty),<a href="ident?i=OLCUC">OLCUC</a>) <a name=L50 href="source/kernel/chr_drv/tty_io.c#L50">50</a> <a name=L51 href="source/kernel/chr_drv/tty_io.c#L51">51</a> struct <a href="ident?i=tty_struct">tty_struct</a> <a href="ident?i=tty_table">tty_table</a>[] = { <a name=L52 href="source/kernel/chr_drv/tty_io.c#L52">52</a> { <a name=L53 href="source/kernel/chr_drv/tty_io.c#L53">53</a> {<a href="ident?i=ICRNL">ICRNL</a>, <b><i>/* change incoming CR to NL */</i></b> <a name=L54 href="source/kernel/chr_drv/tty_io.c#L54">54</a> <a href="ident?i=OPOST">OPOST</a>|<a href="ident?i=ONLCR">ONLCR</a>, <b><i>/* change outgoing NL to CRNL */</i></b> <a name=L55 href="source/kernel/chr_drv/tty_io.c#L55">55</a> 0, <a name=L56 href="source/kernel/chr_drv/tty_io.c#L56">56</a> <a href="ident?i=ISIG">ISIG</a> | <a href="ident?i=ICANON">ICANON</a> | <a href="ident?i=ECHO">ECHO</a> | <a href="ident?i=ECHOCTL">ECHOCTL</a> | <a href="ident?i=ECHOKE">ECHOKE</a>, <a name=L57 href="source/kernel/chr_drv/tty_io.c#L57">57</a> 0, <b><i>/* console termio */</i></b> <a name=L58 href="source/kernel/chr_drv/tty_io.c#L58">58</a> <a href="ident?i=INIT_C_CC">INIT_C_CC</a>}, <a name=L59 href="source/kernel/chr_drv/tty_io.c#L59">59</a> 0, <b><i>/* initial pgrp */</i></b> <a name=L60 href="source/kernel/chr_drv/tty_io.c#L60">60</a> 0, <b><i>/* initial stopped */</i></b> <a name=L61 href="source/kernel/chr_drv/tty_io.c#L61">61</a> <a href="ident?i=con_write">con_write</a>, <a name=L62 href="source/kernel/chr_drv/tty_io.c#L62">62</a> {0,0,0,0,<i>""</i>}, <b><i>/* console read-queue */</i></b> <a name=L63 href="source/kernel/chr_drv/tty_io.c#L63">63</a> {0,0,0,0,<i>""</i>}, <b><i>/* console write-queue */</i></b> <a name=L64 href="source/kernel/chr_drv/tty_io.c#L64">64</a> {0,0,0,0,<i>""</i>} <b><i>/* console secondary queue */</i></b> <a name=L65 href="source/kernel/chr_drv/tty_io.c#L65">65</a> },{ <a name=L66 href="source/kernel/chr_drv/tty_io.c#L66">66</a> {0, <b><i>/* no translation */</i></b> <a name=L67 href="source/kernel/chr_drv/tty_io.c#L67">67</a> 0, <b><i>/* no translation */</i></b> <a name=L68 href="source/kernel/chr_drv/tty_io.c#L68">68</a> <a href="ident?i=B2400">B2400</a> | <a href="ident?i=CS8">CS8</a>, <a name=L69 href="source/kernel/chr_drv/tty_io.c#L69">69</a> 0, <a name=L70 href="source/kernel/chr_drv/tty_io.c#L70">70</a> 0, <a name=L71 href="source/kernel/chr_drv/tty_io.c#L71">71</a> <a href="ident?i=INIT_C_CC">INIT_C_CC</a>}, <a name=L72 href="source/kernel/chr_drv/tty_io.c#L72">72</a> 0, <a name=L73 href="source/kernel/chr_drv/tty_io.c#L73">73</a> 0, <a name=L74 href="source/kernel/chr_drv/tty_io.c#L74">74</a> <a href="ident?i=rs_write">rs_write</a>, <a name=L75 href="source/kernel/chr_drv/tty_io.c#L75">75</a> {0x3f8,0,0,0,<i>""</i>}, <b><i>/* rs 1 */</i></b> <a name=L76 href="source/kernel/chr_drv/tty_io.c#L76">76</a> {0x3f8,0,0,0,<i>""</i>}, <a name=L77 href="source/kernel/chr_drv/tty_io.c#L77">77</a> {0,0,0,0,<i>""</i>} <a name=L78 href="source/kernel/chr_drv/tty_io.c#L78">78</a> },{ <a name=L79 href="source/kernel/chr_drv/tty_io.c#L79">79</a> {0, <b><i>/* no translation */</i></b> <a name=L80 href="source/kernel/chr_drv/tty_io.c#L80">80</a> 0, <b><i>/* no translation */</i></b> <a name=L81 href="source/kernel/chr_drv/tty_io.c#L81">81</a> <a href="ident?i=B2400">B2400</a> | <a href="ident?i=CS8">CS8</a>, <a name=L82 href="source/kernel/chr_drv/tty_io.c#L82">82</a> 0, <a name=L83 href="source/kernel/chr_drv/tty_io.c#L83">83</a> 0, <a name=L84 href="source/kernel/chr_drv/tty_io.c#L84">84</a> <a href="ident?i=INIT_C_CC">INIT_C_CC</a>}, <a name=L85 href="source/kernel/chr_drv/tty_io.c#L85">85</a> 0, <a name=L86 href="source/kernel/chr_drv/tty_io.c#L86">86</a> 0, <a name=L87 href="source/kernel/chr_drv/tty_io.c#L87">87</a> <a href="ident?i=rs_write">rs_write</a>, <a name=L88 href="source/kernel/chr_drv/tty_io.c#L88">88</a> {0x2f8,0,0,0,<i>""</i>}, <b><i>/* rs 2 */</i></b> <a name=L89 href="source/kernel/chr_drv/tty_io.c#L89">89</a> {0x2f8,0,0,0,<i>""</i>}, <a name=L90 href="source/kernel/chr_drv/tty_io.c#L90">90</a> {0,0,0,0,<i>""</i>} <a name=L91 href="source/kernel/chr_drv/tty_io.c#L91">91</a> } <a name=L92 href="source/kernel/chr_drv/tty_io.c#L92">92</a> }; <a name=L93 href="source/kernel/chr_drv/tty_io.c#L93">93</a> <a name=L94 href="source/kernel/chr_drv/tty_io.c#L94">94</a> <b><i>/*</i></b> <a name=L95 href="source/kernel/chr_drv/tty_io.c#L95">95</a> <b><i> * these are the tables used by the machine code handlers.</i></b> <a name=L96 href="source/kernel/chr_drv/tty_io.c#L96">96</a> <b><i> * you can implement pseudo-tty's or something by changing</i></b> <a name=L97 href="source/kernel/chr_drv/tty_io.c#L97">97</a> <b><i> * them. Currently not done.</i></b> <a name=L98 href="source/kernel/chr_drv/tty_io.c#L98">98</a> <b><i> */</i></b> <a name=L99 href="source/kernel/chr_drv/tty_io.c#L99">99</a> struct <a href="ident?i=tty_queue">tty_queue</a> * <a href="ident?i=table_list">table_list</a>[]={<a name=L100 href="source/kernel/chr_drv/tty_io.c#L100">100</a> &<a href="ident?i=tty_table">tty_table</a>[0].read_q, &<a href="ident?i=tty_table">tty_table</a>[0].write_q,⌨️ 快捷键说明
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