<p></p>
<p><b>@ldv-alt</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/strace/strace/pull/208#discussion_r798125721">tests/ioctl_lirc.c</a>:</p>
<pre style='color:#555'>> +    value = 8;
+       do_ioctl(LIRC_SET_SEND_MODE, &value);
+       printf("ioctl(-1, %s, [LIRC_MODE_SCANCODE]) = %s\n",
+              XLAT_STR(LIRC_SET_SEND_MODE), errstr);
+
+       value = 4;
+       do_ioctl(LIRC_SET_REC_MODE, &value);
+       printf("ioctl(-1, %s, [LIRC_MODE_MODE2]) = %s\n",
+              XLAT_STR(LIRC_SET_REC_MODE), errstr);
+
+       value = 16;
+       do_ioctl(LIRC_SET_REC_MODE, &value);
+       printf("ioctl(-1, %s, [LIRC_MODE_LIRCCODE]) = %s\n",
+              XLAT_STR(LIRC_SET_REC_MODE), errstr);
+
+       // read ioctl
</pre>
<p dir="auto">OK, there is <code>ioctl(-1, LIRC_GET_FEATURES, 0)</code> in <code>INJECT_RETVAL</code> variant, it's probably enough.<br>
At least the coverage test reports that all lines are covered.</p>

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