tty_io.c

linux0.11 version(301k)

<a name=L101 href="source/kernel/chr_drv/tty_io.c#L101">101</a>         &amp;<a href="ident?i=tty_table">tty_table</a>[1].read_q, &amp;<a href="ident?i=tty_table">tty_table</a>[1].write_q,
<a name=L102 href="source/kernel/chr_drv/tty_io.c#L102">102</a>         &amp;<a href="ident?i=tty_table">tty_table</a>[2].read_q, &amp;<a href="ident?i=tty_table">tty_table</a>[2].write_q
<a name=L103 href="source/kernel/chr_drv/tty_io.c#L103">103</a>         };
<a name=L104 href="source/kernel/chr_drv/tty_io.c#L104">104</a> 
<a name=L105 href="source/kernel/chr_drv/tty_io.c#L105">105</a> void <a href="ident?i=tty_init">tty_init</a>(void)
<a name=L106 href="source/kernel/chr_drv/tty_io.c#L106">106</a> {
<a name=L107 href="source/kernel/chr_drv/tty_io.c#L107">107</a>         <a href="ident?i=rs_init">rs_init</a>();
<a name=L108 href="source/kernel/chr_drv/tty_io.c#L108">108</a>         <a href="ident?i=con_init">con_init</a>();
<a name=L109 href="source/kernel/chr_drv/tty_io.c#L109">109</a> }
<a name=L110 href="source/kernel/chr_drv/tty_io.c#L110">110</a> 
<a name=L111 href="source/kernel/chr_drv/tty_io.c#L111">111</a> void <a href="ident?i=tty_intr">tty_intr</a>(struct <a href="ident?i=tty_struct">tty_struct</a> * tty, int mask)
<a name=L112 href="source/kernel/chr_drv/tty_io.c#L112">112</a> {
<a name=L113 href="source/kernel/chr_drv/tty_io.c#L113">113</a>         int i;
<a name=L114 href="source/kernel/chr_drv/tty_io.c#L114">114</a> 
<a name=L115 href="source/kernel/chr_drv/tty_io.c#L115">115</a>         if (tty-&gt;pgrp &lt;= 0)
<a name=L116 href="source/kernel/chr_drv/tty_io.c#L116">116</a>                 return;
<a name=L117 href="source/kernel/chr_drv/tty_io.c#L117">117</a>         for (i=0;i&lt;<a href="ident?i=NR_TASKS">NR_TASKS</a>;i++)
<a name=L118 href="source/kernel/chr_drv/tty_io.c#L118">118</a>                 if (<a href="ident?i=task">task</a>[i] &amp;&amp; <a href="ident?i=task">task</a>[i]-&gt;pgrp==tty-&gt;pgrp)
<a name=L119 href="source/kernel/chr_drv/tty_io.c#L119">119</a>                         <a href="ident?i=task">task</a>[i]-&gt;signal |= mask;
<a name=L120 href="source/kernel/chr_drv/tty_io.c#L120">120</a> }
<a name=L121 href="source/kernel/chr_drv/tty_io.c#L121">121</a> 
<a name=L122 href="source/kernel/chr_drv/tty_io.c#L122">122</a> static void <a href="ident?i=sleep_if_empty">sleep_if_empty</a>(struct <a href="ident?i=tty_queue">tty_queue</a> * queue)
<a name=L123 href="source/kernel/chr_drv/tty_io.c#L123">123</a> {
<a name=L124 href="source/kernel/chr_drv/tty_io.c#L124">124</a>         <a href="ident?i=cli">cli</a>();
<a name=L125 href="source/kernel/chr_drv/tty_io.c#L125">125</a>         while (!<a href="ident?i=current">current</a>-&gt;signal &amp;&amp; <a href="ident?i=EMPTY">EMPTY</a>(*queue))
<a name=L126 href="source/kernel/chr_drv/tty_io.c#L126">126</a>                 <a href="ident?i=interruptible_sleep_on">interruptible_sleep_on</a>(&amp;queue-&gt;proc_list);
<a name=L127 href="source/kernel/chr_drv/tty_io.c#L127">127</a>         <a href="ident?i=sti">sti</a>();
<a name=L128 href="source/kernel/chr_drv/tty_io.c#L128">128</a> }
<a name=L129 href="source/kernel/chr_drv/tty_io.c#L129">129</a> 
<a name=L130 href="source/kernel/chr_drv/tty_io.c#L130">130</a> static void <a href="ident?i=sleep_if_full">sleep_if_full</a>(struct <a href="ident?i=tty_queue">tty_queue</a> * queue)
<a name=L131 href="source/kernel/chr_drv/tty_io.c#L131">131</a> {
<a name=L132 href="source/kernel/chr_drv/tty_io.c#L132">132</a>         if (!<a href="ident?i=FULL">FULL</a>(*queue))
<a name=L133 href="source/kernel/chr_drv/tty_io.c#L133">133</a>                 return;
<a name=L134 href="source/kernel/chr_drv/tty_io.c#L134">134</a>         <a href="ident?i=cli">cli</a>();
<a name=L135 href="source/kernel/chr_drv/tty_io.c#L135">135</a>         while (!<a href="ident?i=current">current</a>-&gt;signal &amp;&amp; <a href="ident?i=LEFT">LEFT</a>(*queue)&lt;128)
<a name=L136 href="source/kernel/chr_drv/tty_io.c#L136">136</a>                 <a href="ident?i=interruptible_sleep_on">interruptible_sleep_on</a>(&amp;queue-&gt;proc_list);
<a name=L137 href="source/kernel/chr_drv/tty_io.c#L137">137</a>         <a href="ident?i=sti">sti</a>();
<a name=L138 href="source/kernel/chr_drv/tty_io.c#L138">138</a> }
<a name=L139 href="source/kernel/chr_drv/tty_io.c#L139">139</a> 
<a name=L140 href="source/kernel/chr_drv/tty_io.c#L140">140</a> void <a href="ident?i=wait_for_keypress">wait_for_keypress</a>(void)
<a name=L141 href="source/kernel/chr_drv/tty_io.c#L141">141</a> {
<a name=L142 href="source/kernel/chr_drv/tty_io.c#L142">142</a>         <a href="ident?i=sleep_if_empty">sleep_if_empty</a>(&amp;<a href="ident?i=tty_table">tty_table</a>[0].secondary);
<a name=L143 href="source/kernel/chr_drv/tty_io.c#L143">143</a> }
<a name=L144 href="source/kernel/chr_drv/tty_io.c#L144">144</a> 
<a name=L145 href="source/kernel/chr_drv/tty_io.c#L145">145</a> void <a href="ident?i=copy_to_cooked">copy_to_cooked</a>(struct <a href="ident?i=tty_struct">tty_struct</a> * tty)
<a name=L146 href="source/kernel/chr_drv/tty_io.c#L146">146</a> {
<a name=L147 href="source/kernel/chr_drv/tty_io.c#L147">147</a>         signed char c;
<a name=L148 href="source/kernel/chr_drv/tty_io.c#L148">148</a> 
<a name=L149 href="source/kernel/chr_drv/tty_io.c#L149">149</a>         while (!<a href="ident?i=EMPTY">EMPTY</a>(tty-&gt;read_q) &amp;&amp; !<a href="ident?i=FULL">FULL</a>(tty-&gt;secondary)) {
<a name=L150 href="source/kernel/chr_drv/tty_io.c#L150">150</a>                 <a href="ident?i=GETCH">GETCH</a>(tty-&gt;read_q,c);
<a name=L151 href="source/kernel/chr_drv/tty_io.c#L151">151</a>                 if (c==13)
<a name=L152 href="source/kernel/chr_drv/tty_io.c#L152">152</a>                         if (<a href="ident?i=I_CRNL">I_CRNL</a>(tty))
<a name=L153 href="source/kernel/chr_drv/tty_io.c#L153">153</a>                                 c=10;
<a name=L154 href="source/kernel/chr_drv/tty_io.c#L154">154</a>                         else if (<a href="ident?i=I_NOCR">I_NOCR</a>(tty))
<a name=L155 href="source/kernel/chr_drv/tty_io.c#L155">155</a>                                 continue;
<a name=L156 href="source/kernel/chr_drv/tty_io.c#L156">156</a>                         else ;
<a name=L157 href="source/kernel/chr_drv/tty_io.c#L157">157</a>                 else if (c==10 &amp;&amp; <a href="ident?i=I_NLCR">I_NLCR</a>(tty))
<a name=L158 href="source/kernel/chr_drv/tty_io.c#L158">158</a>                         c=13;
<a name=L159 href="source/kernel/chr_drv/tty_io.c#L159">159</a>                 if (<a href="ident?i=I_UCLC">I_UCLC</a>(tty))
<a name=L160 href="source/kernel/chr_drv/tty_io.c#L160">160</a>                         c=<a href="ident?i=tolower">tolower</a>(c);
<a name=L161 href="source/kernel/chr_drv/tty_io.c#L161">161</a>                 if (<a href="ident?i=L_CANON">L_CANON</a>(tty)) {
<a name=L162 href="source/kernel/chr_drv/tty_io.c#L162">162</a>                         if (c==<a href="ident?i=KILL_CHAR">KILL_CHAR</a>(tty)) {
<a name=L163 href="source/kernel/chr_drv/tty_io.c#L163">163</a>                                 <b><i>/* deal with killing the input line */</i></b>
<a name=L164 href="source/kernel/chr_drv/tty_io.c#L164">164</a>                                 while(!(<a href="ident?i=EMPTY">EMPTY</a>(tty-&gt;secondary) ||
<a name=L165 href="source/kernel/chr_drv/tty_io.c#L165">165</a>                                         (c=<a href="ident?i=LAST">LAST</a>(tty-&gt;secondary))==10 ||
<a name=L166 href="source/kernel/chr_drv/tty_io.c#L166">166</a>                                         c==<a href="ident?i=EOF_CHAR">EOF_CHAR</a>(tty))) {
<a name=L167 href="source/kernel/chr_drv/tty_io.c#L167">167</a>                                         if (<a href="ident?i=L_ECHO">L_ECHO</a>(tty)) {
<a name=L168 href="source/kernel/chr_drv/tty_io.c#L168">168</a>                                                 if (c&lt;32)
<a name=L169 href="source/kernel/chr_drv/tty_io.c#L169">169</a>                                                         <a href="ident?i=PUTCH">PUTCH</a>(127,tty-&gt;write_q);
<a name=L170 href="source/kernel/chr_drv/tty_io.c#L170">170</a>                                                 <a href="ident?i=PUTCH">PUTCH</a>(127,tty-&gt;write_q);
<a name=L171 href="source/kernel/chr_drv/tty_io.c#L171">171</a>                                                 tty-&gt;<a href="ident?i=write">write</a>(tty);
<a name=L172 href="source/kernel/chr_drv/tty_io.c#L172">172</a>                                         }
<a name=L173 href="source/kernel/chr_drv/tty_io.c#L173">173</a>                                         <a href="ident?i=DEC">DEC</a>(tty-&gt;secondary.<a href="ident?i=head">head</a>);
<a name=L174 href="source/kernel/chr_drv/tty_io.c#L174">174</a>                                 }
<a name=L175 href="source/kernel/chr_drv/tty_io.c#L175">175</a>                                 continue;
<a name=L176 href="source/kernel/chr_drv/tty_io.c#L176">176</a>                         }
<a name=L177 href="source/kernel/chr_drv/tty_io.c#L177">177</a>                         if (c==<a href="ident?i=ERASE_CHAR">ERASE_CHAR</a>(tty)) {
<a name=L178 href="source/kernel/chr_drv/tty_io.c#L178">178</a>                                 if (<a href="ident?i=EMPTY">EMPTY</a>(tty-&gt;secondary) ||
<a name=L179 href="source/kernel/chr_drv/tty_io.c#L179">179</a>                                    (c=<a href="ident?i=LAST">LAST</a>(tty-&gt;secondary))==10 ||
<a name=L180 href="source/kernel/chr_drv/tty_io.c#L180">180</a>                                    c==<a href="ident?i=EOF_CHAR">EOF_CHAR</a>(tty))
<a name=L181 href="source/kernel/chr_drv/tty_io.c#L181">181</a>                                         continue;
<a name=L182 href="source/kernel/chr_drv/tty_io.c#L182">182</a>                                 if (<a href="ident?i=L_ECHO">L_ECHO</a>(tty)) {
<a name=L183 href="source/kernel/chr_drv/tty_io.c#L183">183</a>                                         if (c&lt;32)
<a name=L184 href="source/kernel/chr_drv/tty_io.c#L184">184</a>                                                 <a href="ident?i=PUTCH">PUTCH</a>(127,tty-&gt;write_q);
<a name=L185 href="source/kernel/chr_drv/tty_io.c#L185">185</a>                                         <a href="ident?i=PUTCH">PUTCH</a>(127,tty-&gt;write_q);
<a name=L186 href="source/kernel/chr_drv/tty_io.c#L186">186</a>                                         tty-&gt;<a href="ident?i=write">write</a>(tty);
<a name=L187 href="source/kernel/chr_drv/tty_io.c#L187">187</a>                                 }
<a name=L188 href="source/kernel/chr_drv/tty_io.c#L188">188</a>                                 <a href="ident?i=DEC">DEC</a>(tty-&gt;secondary.<a href="ident?i=head">head</a>);
<a name=L189 href="source/kernel/chr_drv/tty_io.c#L189">189</a>                                 continue;
<a name=L190 href="source/kernel/chr_drv/tty_io.c#L190">190</a>                         }
<a name=L191 href="source/kernel/chr_drv/tty_io.c#L191">191</a>                         if (c==<a href="ident?i=STOP_CHAR">STOP_CHAR</a>(tty)) {
<a name=L192 href="source/kernel/chr_drv/tty_io.c#L192">192</a>                                 tty-&gt;stopped=1;
<a name=L193 href="source/kernel/chr_drv/tty_io.c#L193">193</a>                                 continue;
<a name=L194 href="source/kernel/chr_drv/tty_io.c#L194">194</a>                         }
<a name=L195 href="source/kernel/chr_drv/tty_io.c#L195">195</a>                         if (c==<a href="ident?i=START_CHAR">START_CHAR</a>(tty)) {
<a name=L196 href="source/kernel/chr_drv/tty_io.c#L196">196</a>                                 tty-&gt;stopped=0;
<a name=L197 href="source/kernel/chr_drv/tty_io.c#L197">197</a>                                 continue;
<a name=L198 href="source/kernel/chr_drv/tty_io.c#L198">198</a>                         }
<a name=L199 href="source/kernel/chr_drv/tty_io.c#L199">199</a>                 }
<a name=L200 href="source/kernel/chr_drv/tty_io.c#L200">200</a>                 if (<a href="ident?i=L_ISIG">L_ISIG</a>(tty)) {
<a name=L201 href="source/kernel/chr_drv/tty_io.c#L201">201</a>                         if (c==<a href="ident?i=INTR_CHAR">INTR_CHAR</a>(tty)) {
<a name=L202 href="source/kernel/chr_drv/tty_io.c#L202">202</a>                                 <a href="ident?i=tty_intr">tty_intr</a>(tty,<a href="ident?i=INTMASK">INTMASK</a>);
<a name=L203 href="source/kernel/chr_drv/tty_io.c#L203">203</a>                                 continue;
<a name=L204 href="source/kernel/chr_drv/tty_io.c#L204">204</a>                         }
<a name=L205 href="source/kernel/chr_drv/tty_io.c#L205">205</a>                         if (c==<a href="ident?i=QUIT_CHAR">QUIT_CHAR</a>(tty)) {
<a name=L206 href="source/kernel/chr_drv/tty_io.c#L206">206</a>                                 <a href="ident?i=tty_intr">tty_intr</a>(tty,<a href="ident?i=QUITMASK">QUITMASK</a>);
<a name=L207 href="source/kernel/chr_drv/tty_io.c#L207">207</a>                                 continue;
<a name=L208 href="source/kernel/chr_drv/tty_io.c#L208">208</a>                         }
<a name=L209 href="source/kernel/chr_drv/tty_io.c#L209">209</a>                 }
<a name=L210 href="source/kernel/chr_drv/tty_io.c#L210">210</a>                 if (c==10 || c==<a href="ident?i=EOF_CHAR">EOF_CHAR</a>(tty))
<a name=L211 href="source/kernel/chr_drv/tty_io.c#L211">211</a>                         tty-&gt;secondary.data++;
<a name=L212 href="source/kernel/chr_drv/tty_io.c#L212">212</a>                 if (<a href="ident?i=L_ECHO">L_ECHO</a>(tty)) {
<a name=L213 href="source/kernel/chr_drv/tty_io.c#L213">213</a>                         if (c==10) {
<a name=L214 href="source/kernel/chr_drv/tty_io.c#L214">214</a>                                 <a href="ident?i=PUTCH">PUTCH</a>(10,tty-&gt;write_q);
<a name=L215 href="source/kernel/chr_drv/tty_io.c#L215">215</a>                                 <a href="ident?i=PUTCH">PUTCH</a>(13,tty-&gt;write_q);
<a name=L216 href="source/kernel/chr_drv/tty_io.c#L216">216</a>                         } else if (c&lt;32) {
<a name=L217 href="source/kernel/chr_drv/tty_io.c#L217">217</a>                                 if (<a href="ident?i=L_ECHOCTL">L_ECHOCTL</a>(tty)) {
<a name=L218 href="source/kernel/chr_drv/tty_io.c#L218">218</a>                                         <a href="ident?i=PUTCH">PUTCH</a>(<i>'^'</i>,tty-&gt;write_q);
<a name=L219 href="source/kernel/chr_drv/tty_io.c#L219">219</a>                                         <a href="ident?i=PUTCH">PUTCH</a>(c+64,tty-&gt;write_q);
<a name=L220 href="source/kernel/chr_drv/tty_io.c#L220">220</a>                                 }
<a name=L221 href="source/kernel/chr_drv/tty_io.c#L221">221</a>                         } else
<a name=L222 href="source/kernel/chr_drv/tty_io.c#L222">222</a>                                 <a href="ident?i=PUTCH">PUTCH</a>(c,tty-&gt;write_q);
<a name=L223 href="source/kernel/chr_drv/tty_io.c#L223">223</a>                         tty-&gt;<a href="ident?i=write">write</a>(tty);
<a name=L224 href="source/kernel/chr_drv/tty_io.c#L224">224</a>                 }
<a name=L225 href="source/kernel/chr_drv/tty_io.c#L225">225</a>                 <a href="ident?i=PUTCH">PUTCH</a>(c,tty-&gt;secondary);
<a name=L226 href="source/kernel/chr_drv/tty_io.c#L226">226</a>         }
<a name=L227 href="source/kernel/chr_drv/tty_io.c#L227">227</a>         <a href="ident?i=wake_up">wake_up</a>(&amp;tty-&gt;secondary.proc_list);
<a name=L228 href="source/kernel/chr_drv/tty_io.c#L228">228</a> }
<a name=L229 href="source/kernel/chr_drv/tty_io.c#L229">229</a> 
<a name=L230 href="source/kernel/chr_drv/tty_io.c#L230">230</a> int <a href="ident?i=tty_read">tty_read</a>(unsigned channel, char * <a href="ident?i=buf">buf</a>, int nr)
<a name=L231 href="source/kernel/chr_drv/tty_io.c#L231">231</a> {